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1 | #include "libcoro/coro.c" |
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2 | |
1 | #define PERL_NO_GET_CONTEXT |
3 | #define PERL_NO_GET_CONTEXT |
2 | |
4 | #define PERL_EXT |
3 | #include "libcoro/coro.c" |
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4 | |
5 | |
5 | #include "EXTERN.h" |
6 | #include "EXTERN.h" |
6 | #include "perl.h" |
7 | #include "perl.h" |
7 | #include "XSUB.h" |
8 | #include "XSUB.h" |
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9 | #include "perliol.h" |
8 | |
10 | |
9 | #include "patchlevel.h" |
11 | #include "patchlevel.h" |
10 | |
12 | |
11 | #if PERL_VERSION < 6 |
13 | #include <stdio.h> |
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14 | #include <errno.h> |
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15 | #include <assert.h> |
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16 | |
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17 | #ifdef WIN32 |
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18 | # undef setjmp |
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19 | # undef longjmp |
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20 | # undef _exit |
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21 | # define setjmp _setjmp /* deep magic */ |
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22 | #else |
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23 | # include <inttypes.h> /* most portable stdint.h */ |
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24 | #endif |
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25 | |
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26 | #ifdef HAVE_MMAP |
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27 | # include <unistd.h> |
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28 | # include <sys/mman.h> |
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29 | # ifndef MAP_ANONYMOUS |
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30 | # ifdef MAP_ANON |
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31 | # define MAP_ANONYMOUS MAP_ANON |
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32 | # else |
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33 | # undef HAVE_MMAP |
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34 | # endif |
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35 | # endif |
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36 | # include <limits.h> |
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37 | # ifndef PAGESIZE |
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38 | # define PAGESIZE pagesize |
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39 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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40 | static long pagesize; |
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41 | # else |
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42 | # define BOOT_PAGESIZE (void)0 |
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43 | # endif |
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44 | #else |
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45 | # define PAGESIZE 0 |
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46 | # define BOOT_PAGESIZE (void)0 |
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47 | #endif |
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48 | |
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49 | #if CORO_USE_VALGRIND |
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50 | # include <valgrind/valgrind.h> |
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51 | #endif |
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52 | |
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53 | /* the maximum number of idle cctx that will be pooled */ |
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54 | static int cctx_max_idle = 4; |
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55 | |
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56 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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57 | (PERL_REVISION > (a) \ |
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58 | || (PERL_REVISION == (a) \ |
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59 | && (PERL_VERSION > (b) \ |
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60 | || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c))))) |
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61 | |
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62 | #if !PERL_VERSION_ATLEAST (5,6,0) |
12 | # ifndef PL_ppaddr |
63 | # ifndef PL_ppaddr |
13 | # define PL_ppaddr ppaddr |
64 | # define PL_ppaddr ppaddr |
14 | # endif |
65 | # endif |
15 | # ifndef call_sv |
66 | # ifndef call_sv |
16 | # define call_sv perl_call_sv |
67 | # define call_sv perl_call_sv |
… | |
… | |
27 | # ifndef IS_PADCONST |
78 | # ifndef IS_PADCONST |
28 | # define IS_PADCONST(v) 0 |
79 | # define IS_PADCONST(v) 0 |
29 | # endif |
80 | # endif |
30 | #endif |
81 | #endif |
31 | |
82 | |
32 | #include <stdio.h> |
83 | /* 5.11 */ |
33 | #include <errno.h> |
84 | #ifndef CxHASARGS |
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85 | # define CxHASARGS(cx) (cx)->blk_sub.hasargs |
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86 | #endif |
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87 | |
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88 | /* 5.10.0 */ |
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89 | #ifndef SvREFCNT_inc_NN |
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90 | # define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) |
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91 | #endif |
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92 | |
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93 | /* 5.8.8 */ |
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94 | #ifndef GV_NOTQUAL |
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95 | # define GV_NOTQUAL 0 |
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96 | #endif |
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97 | #ifndef newSV |
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98 | # define newSV(l) NEWSV(0,l) |
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99 | #endif |
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100 | #ifndef CvISXSUB_on |
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101 | # define CvISXSUB_on(cv) (void)cv |
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102 | #endif |
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103 | #ifndef CvISXSUB |
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104 | # define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE) |
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105 | #endif |
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106 | #ifndef Newx |
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107 | # define Newx(ptr,nitems,type) New (0,ptr,nitems,type) |
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108 | #endif |
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109 | |
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110 | /* 5.8.7 */ |
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111 | #ifndef SvRV_set |
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112 | # define SvRV_set(s,v) SvRV(s) = (v) |
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113 | #endif |
34 | |
114 | |
35 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
115 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
36 | # undef STACKGUARD |
116 | # undef CORO_STACKGUARD |
37 | #endif |
117 | #endif |
38 | |
118 | |
39 | #ifndef STACKGUARD |
119 | #ifndef CORO_STACKGUARD |
40 | # define STACKGUARD 0 |
120 | # define CORO_STACKGUARD 0 |
41 | #endif |
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42 | |
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43 | #ifdef HAVE_MMAP |
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44 | # include <unistd.h> |
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45 | # include <sys/mman.h> |
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46 | # ifndef MAP_ANONYMOUS |
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47 | # ifdef MAP_ANON |
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48 | # define MAP_ANONYMOUS MAP_ANON |
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49 | # else |
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50 | # undef HAVE_MMAP |
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51 | # endif |
121 | #endif |
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122 | |
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123 | /* prefer perl internal functions over our own? */ |
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124 | #ifndef CORO_PREFER_PERL_FUNCTIONS |
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125 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
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126 | #endif |
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127 | |
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128 | /* The next macros try to return the current stack pointer, in an as |
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129 | * portable way as possible. */ |
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130 | #if __GNUC__ >= 4 |
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131 | # define dSTACKLEVEL int stacklevel_dummy |
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132 | # define STACKLEVEL __builtin_frame_address (0) |
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133 | #else |
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134 | # define dSTACKLEVEL volatile void *stacklevel |
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135 | # define STACKLEVEL ((void *)&stacklevel) |
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136 | #endif |
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137 | |
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138 | #define IN_DESTRUCT PL_dirty |
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139 | |
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140 | #if __GNUC__ >= 3 |
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141 | # define attribute(x) __attribute__(x) |
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142 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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143 | # define INLINE static inline |
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144 | #else |
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145 | # define attribute(x) |
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146 | # define expect(expr,value) (expr) |
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147 | # define INLINE static |
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148 | #endif |
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149 | |
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150 | #define expect_false(expr) expect ((expr) != 0, 0) |
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151 | #define expect_true(expr) expect ((expr) != 0, 1) |
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152 | |
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153 | #define NOINLINE attribute ((noinline)) |
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154 | |
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155 | #include "CoroAPI.h" |
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156 | #define GCoroAPI (&coroapi) /* very sneaky */ |
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157 | |
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158 | #ifdef USE_ITHREADS |
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159 | # if CORO_PTHREAD |
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160 | static void *coro_thx; |
52 | # endif |
161 | # endif |
53 | # include <limits.h> |
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54 | # ifndef PAGESIZE |
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55 | # define PAGESIZE pagesize |
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56 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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57 | static long pagesize; |
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58 | # else |
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59 | # define BOOT_PAGESIZE |
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60 | # endif |
162 | #endif |
61 | #endif |
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62 | |
163 | |
63 | /* The next macro should declare a variable stacklevel that contains and approximation |
164 | static double (*nvtime)(); /* so why doesn't it take void? */ |
64 | * to the current C stack pointer. Its property is that it changes with each call |
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65 | * and should be unique. */ |
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66 | #define dSTACKLEVEL int stacklevel |
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67 | #define STACKLEVEL ((void *)&stacklevel) |
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68 | |
165 | |
69 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
166 | /* we hijack an hopefully unused CV flag for our purposes */ |
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167 | #define CVf_SLF 0x4000 |
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168 | static OP *pp_slf (pTHX); |
70 | |
169 | |
71 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
170 | static U32 cctx_gen; |
72 | |
171 | static size_t cctx_stacksize = CORO_STACKSIZE; |
73 | #include "CoroAPI.h" |
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74 | |
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75 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
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76 | |
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77 | #ifdef USE_ITHREADS |
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78 | static perl_mutex coro_mutex; |
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79 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
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80 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
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81 | #else |
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82 | # define LOCK (void)0 |
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83 | # define UNLOCK (void)0 |
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84 | #endif |
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85 | |
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86 | static struct CoroAPI coroapi; |
172 | static struct CoroAPI coroapi; |
87 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
173 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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174 | static JMPENV *main_top_env; |
88 | static HV *coro_state_stash, *coro_stash; |
175 | static HV *coro_state_stash, *coro_stash; |
89 | static SV *coro_mortal; /* will be freed after next transfer */ |
176 | static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
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177 | |
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178 | static AV *av_destroy; /* destruction queue */ |
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179 | static SV *sv_manager; /* the manager coro */ |
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180 | static SV *sv_idle; /* $Coro::idle */ |
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181 | |
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182 | static GV *irsgv; /* $/ */ |
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183 | static GV *stdoutgv; /* *STDOUT */ |
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184 | static SV *rv_diehook; |
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185 | static SV *rv_warnhook; |
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186 | static HV *hv_sig; /* %SIG */ |
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187 | |
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188 | /* async_pool helper stuff */ |
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189 | static SV *sv_pool_rss; |
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190 | static SV *sv_pool_size; |
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191 | static SV *sv_async_pool_idle; /* description string */ |
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192 | static AV *av_async_pool; /* idle pool */ |
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193 | static SV *sv_Coro; /* class string */ |
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194 | static CV *cv_pool_handler; |
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195 | static CV *cv_coro_state_new; |
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196 | |
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197 | /* Coro::AnyEvent */ |
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198 | static SV *sv_activity; |
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199 | |
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200 | static struct coro_cctx *cctx_first; |
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201 | static int cctx_count, cctx_idle; |
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202 | |
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203 | enum { |
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204 | CC_MAPPED = 0x01, |
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205 | CC_NOREUSE = 0x02, /* throw this away after tracing */ |
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206 | CC_TRACE = 0x04, |
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207 | CC_TRACE_SUB = 0x08, /* trace sub calls */ |
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208 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
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209 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
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210 | }; |
90 | |
211 | |
91 | /* this is a structure representing a c-level coroutine */ |
212 | /* this is a structure representing a c-level coroutine */ |
92 | typedef struct coro_stack { |
213 | typedef struct coro_cctx |
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214 | { |
93 | struct coro_stack *next; |
215 | struct coro_cctx *next; |
94 | |
216 | |
95 | void *idle_sp; /* original stacklevel when coroutine was created */ |
217 | /* the stack */ |
96 | void *sptr; |
218 | void *sptr; |
97 | long ssize; /* positive == mmap, otherwise malloc */ |
219 | size_t ssize; |
98 | |
220 | |
99 | /* cpu state */ |
221 | /* cpu state */ |
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222 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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223 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
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224 | JMPENV *top_env; |
100 | coro_context cctx; |
225 | coro_context cctx; |
101 | JMPENV *top_env; |
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102 | } coro_stack; |
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103 | |
226 | |
104 | /* the (fake) coro_stack representing the main program */ |
227 | U32 gen; |
105 | static coro_stack *main_stack; |
228 | #if CORO_USE_VALGRIND |
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229 | int valgrind_id; |
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230 | #endif |
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231 | unsigned char flags; |
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232 | } coro_cctx; |
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233 | |
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234 | coro_cctx *cctx_current; /* the currently running cctx */ |
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235 | |
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236 | /*****************************************************************************/ |
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237 | |
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238 | enum { |
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239 | CF_RUNNING = 0x0001, /* coroutine is running */ |
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240 | CF_READY = 0x0002, /* coroutine is ready */ |
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241 | CF_NEW = 0x0004, /* has never been switched to */ |
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242 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
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243 | }; |
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244 | |
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245 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
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246 | typedef struct |
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247 | { |
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248 | SV *defsv; |
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249 | AV *defav; |
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250 | SV *errsv; |
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251 | SV *irsgv; |
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252 | HV *hinthv; |
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253 | #define VAR(name,type) type name; |
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254 | # include "state.h" |
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255 | #undef VAR |
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256 | } perl_slots; |
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257 | |
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258 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
106 | |
259 | |
107 | /* this is a structure representing a perl-level coroutine */ |
260 | /* this is a structure representing a perl-level coroutine */ |
108 | struct coro { |
261 | struct coro { |
109 | /* the c coroutine allocated to this perl coroutine, if any */ |
262 | /* the C coroutine allocated to this perl coroutine, if any */ |
110 | coro_stack *stack; |
263 | coro_cctx *cctx; |
111 | |
264 | |
112 | /* data associated with this coroutine (initial args) */ |
265 | /* state data */ |
113 | AV *args; |
266 | struct CoroSLF slf_frame; /* saved slf frame */ |
114 | int refcnt; |
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115 | |
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116 | /* optionally saved, might be zero */ |
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117 | AV *defav; |
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118 | SV *defsv; |
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119 | SV *errsv; |
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120 | |
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121 | /* saved global state not related to stacks */ |
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122 | U8 dowarn; |
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123 | I32 in_eval; |
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124 | |
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125 | /* the stacks and related info (callchain etc..) */ |
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126 | PERL_SI *curstackinfo; |
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127 | AV *curstack; |
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128 | AV *mainstack; |
267 | AV *mainstack; |
129 | SV **stack_sp; |
268 | perl_slots *slot; /* basically the saved sp */ |
130 | OP *op; |
269 | |
131 | SV **curpad; |
270 | CV *startcv; /* the CV to execute */ |
132 | AV *comppad; |
271 | AV *args; /* data associated with this coroutine (initial args) */ |
133 | CV *compcv; |
272 | int refcnt; /* coroutines are refcounted, yes */ |
134 | SV **stack_base; |
273 | int flags; /* CF_ flags */ |
135 | SV **stack_max; |
274 | HV *hv; /* the perl hash associated with this coro, if any */ |
136 | SV **tmps_stack; |
275 | void (*on_destroy)(pTHX_ struct coro *coro); |
137 | I32 tmps_floor; |
276 | |
138 | I32 tmps_ix; |
277 | /* statistics */ |
139 | I32 tmps_max; |
278 | int usecount; /* number of transfers to this coro */ |
140 | I32 *markstack; |
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141 | I32 *markstack_ptr; |
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142 | I32 *markstack_max; |
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143 | I32 *scopestack; |
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144 | I32 scopestack_ix; |
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145 | I32 scopestack_max; |
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146 | ANY *savestack; |
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147 | I32 savestack_ix; |
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148 | I32 savestack_max; |
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149 | OP **retstack; |
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150 | I32 retstack_ix; |
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151 | I32 retstack_max; |
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152 | PMOP *curpm; |
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153 | COP *curcop; |
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154 | |
279 | |
155 | /* coro process data */ |
280 | /* coro process data */ |
156 | int prio; |
281 | int prio; |
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282 | SV *except; /* exception to be thrown */ |
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283 | SV *rouse_cb; |
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284 | |
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285 | /* async_pool */ |
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286 | SV *saved_deffh; |
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287 | SV *invoke_cb; |
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288 | AV *invoke_av; |
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289 | |
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290 | /* linked list */ |
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291 | struct coro *next, *prev; |
157 | }; |
292 | }; |
158 | |
293 | |
159 | typedef struct coro *Coro__State; |
294 | typedef struct coro *Coro__State; |
160 | typedef struct coro *Coro__State_or_hashref; |
295 | typedef struct coro *Coro__State_or_hashref; |
161 | |
296 | |
162 | static AV * |
297 | /* the following variables are effectively part of the perl context */ |
163 | coro_clone_padlist (pTHX_ CV *cv) |
298 | /* and get copied between struct coro and these variables */ |
164 | { |
299 | /* the mainr easonw e don't support windows process emulation */ |
165 | AV *padlist = CvPADLIST (cv); |
300 | static struct CoroSLF slf_frame; /* the current slf frame */ |
166 | AV *newpadlist, *newpad; |
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167 | |
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168 | newpadlist = newAV (); |
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169 | AvREAL_off (newpadlist); |
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170 | #if PERL_VERSION < 9 |
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171 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
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172 | #else |
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173 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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174 | #endif |
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175 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
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176 | --AvFILLp (padlist); |
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177 | |
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178 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
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179 | av_store (newpadlist, 1, (SV *)newpad); |
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180 | |
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181 | return newpadlist; |
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182 | } |
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183 | |
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184 | static void |
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185 | free_padlist (pTHX_ AV *padlist) |
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186 | { |
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187 | /* may be during global destruction */ |
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188 | if (SvREFCNT (padlist)) |
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189 | { |
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190 | I32 i = AvFILLp (padlist); |
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191 | while (i >= 0) |
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192 | { |
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193 | SV **svp = av_fetch (padlist, i--, FALSE); |
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194 | if (svp) |
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195 | { |
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196 | SV *sv; |
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197 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
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198 | SvREFCNT_dec (sv); |
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199 | |
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200 | SvREFCNT_dec (*svp); |
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201 | } |
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202 | } |
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203 | |
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204 | SvREFCNT_dec ((SV*)padlist); |
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205 | } |
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206 | } |
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207 | |
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208 | static int |
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209 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
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210 | { |
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211 | AV *padlist; |
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212 | AV *av = (AV *)mg->mg_obj; |
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213 | |
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214 | /* casting is fun. */ |
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215 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
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216 | free_padlist (aTHX_ padlist); |
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217 | |
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218 | SvREFCNT_dec (av); |
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219 | |
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220 | return 0; |
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221 | } |
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222 | |
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223 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
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224 | |
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225 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
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226 | |
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227 | /* the next two functions merely cache the padlists */ |
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228 | static void |
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229 | get_padlist (pTHX_ CV *cv) |
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230 | { |
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231 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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232 | |
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233 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
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234 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
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235 | else |
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236 | { |
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237 | #if 0 |
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238 | /* this should work - but it doesn't :( */ |
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239 | CV *cp = Perl_cv_clone (aTHX_ cv); |
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240 | CvPADLIST (cv) = CvPADLIST (cp); |
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241 | CvPADLIST (cp) = 0; |
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242 | SvREFCNT_dec (cp); |
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243 | #else |
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244 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
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245 | #endif |
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246 | } |
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247 | } |
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248 | |
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249 | static void |
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250 | put_padlist (pTHX_ CV *cv) |
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251 | { |
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252 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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253 | |
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254 | if (!mg) |
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255 | { |
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256 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
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257 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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258 | mg->mg_virtual = &vtbl_coro; |
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259 | mg->mg_obj = (SV *)newAV (); |
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260 | } |
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261 | |
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262 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
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263 | } |
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264 | |
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265 | #define SB do { |
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266 | #define SE } while (0) |
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267 | |
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268 | #define LOAD(state) load_state(aTHX_ (state)); |
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269 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
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270 | |
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271 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
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272 | |
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273 | static void |
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274 | load_state(pTHX_ Coro__State c) |
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275 | { |
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276 | PL_dowarn = c->dowarn; |
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277 | PL_in_eval = c->in_eval; |
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278 | |
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279 | PL_curstackinfo = c->curstackinfo; |
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280 | PL_curstack = c->curstack; |
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281 | PL_mainstack = c->mainstack; |
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282 | PL_stack_sp = c->stack_sp; |
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283 | PL_op = c->op; |
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284 | PL_curpad = c->curpad; |
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285 | PL_comppad = c->comppad; |
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286 | PL_compcv = c->compcv; |
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287 | PL_stack_base = c->stack_base; |
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288 | PL_stack_max = c->stack_max; |
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289 | PL_tmps_stack = c->tmps_stack; |
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290 | PL_tmps_floor = c->tmps_floor; |
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291 | PL_tmps_ix = c->tmps_ix; |
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292 | PL_tmps_max = c->tmps_max; |
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293 | PL_markstack = c->markstack; |
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294 | PL_markstack_ptr = c->markstack_ptr; |
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295 | PL_markstack_max = c->markstack_max; |
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296 | PL_scopestack = c->scopestack; |
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297 | PL_scopestack_ix = c->scopestack_ix; |
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298 | PL_scopestack_max = c->scopestack_max; |
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299 | PL_savestack = c->savestack; |
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300 | PL_savestack_ix = c->savestack_ix; |
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301 | PL_savestack_max = c->savestack_max; |
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302 | #if PERL_VERSION < 9 |
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303 | PL_retstack = c->retstack; |
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304 | PL_retstack_ix = c->retstack_ix; |
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305 | PL_retstack_max = c->retstack_max; |
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306 | #endif |
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307 | PL_curpm = c->curpm; |
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308 | PL_curcop = c->curcop; |
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309 | |
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310 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
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311 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
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312 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
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313 | |
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314 | { |
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315 | dSP; |
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316 | CV *cv; |
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317 | |
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318 | /* now do the ugly restore mess */ |
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319 | while ((cv = (CV *)POPs)) |
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320 | { |
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321 | AV *padlist = (AV *)POPs; |
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322 | |
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323 | if (padlist) |
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324 | { |
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325 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
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326 | CvPADLIST(cv) = padlist; |
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327 | } |
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328 | |
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329 | ++CvDEPTH(cv); |
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330 | } |
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331 | |
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332 | PUTBACK; |
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333 | } |
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334 | } |
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335 | |
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336 | static void |
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337 | save_state(pTHX_ Coro__State c, int flags) |
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338 | { |
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339 | { |
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340 | dSP; |
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341 | I32 cxix = cxstack_ix; |
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342 | PERL_CONTEXT *ccstk = cxstack; |
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343 | PERL_SI *top_si = PL_curstackinfo; |
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344 | |
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345 | /* |
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346 | * the worst thing you can imagine happens first - we have to save |
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347 | * (and reinitialize) all cv's in the whole callchain :( |
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348 | */ |
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349 | |
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350 | PUSHs (Nullsv); |
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351 | /* this loop was inspired by pp_caller */ |
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352 | for (;;) |
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353 | { |
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354 | while (cxix >= 0) |
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355 | { |
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356 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
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357 | |
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358 | if (CxTYPE(cx) == CXt_SUB) |
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359 | { |
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360 | CV *cv = cx->blk_sub.cv; |
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361 | if (CvDEPTH(cv)) |
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362 | { |
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363 | EXTEND (SP, CvDEPTH(cv)*2); |
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364 | |
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365 | while (--CvDEPTH(cv)) |
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366 | { |
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367 | /* this tells the restore code to increment CvDEPTH */ |
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368 | PUSHs (Nullsv); |
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369 | PUSHs ((SV *)cv); |
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370 | } |
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371 | |
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372 | PUSHs ((SV *)CvPADLIST(cv)); |
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373 | PUSHs ((SV *)cv); |
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374 | |
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375 | get_padlist (aTHX_ cv); |
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376 | } |
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377 | } |
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378 | #ifdef CXt_FORMAT |
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379 | else if (CxTYPE(cx) == CXt_FORMAT) |
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380 | { |
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381 | /* I never used formats, so how should I know how these are implemented? */ |
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382 | /* my bold guess is as a simple, plain sub... */ |
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383 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
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384 | } |
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385 | #endif |
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386 | } |
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387 | |
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388 | if (top_si->si_type == PERLSI_MAIN) |
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389 | break; |
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390 | |
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391 | top_si = top_si->si_prev; |
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392 | ccstk = top_si->si_cxstack; |
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393 | cxix = top_si->si_cxix; |
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394 | } |
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395 | |
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396 | PUTBACK; |
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397 | } |
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398 | |
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399 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
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400 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
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401 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
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402 | |
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403 | c->dowarn = PL_dowarn; |
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404 | c->in_eval = PL_in_eval; |
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405 | |
|
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406 | c->curstackinfo = PL_curstackinfo; |
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407 | c->curstack = PL_curstack; |
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408 | c->mainstack = PL_mainstack; |
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409 | c->stack_sp = PL_stack_sp; |
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410 | c->op = PL_op; |
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411 | c->curpad = PL_curpad; |
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412 | c->comppad = PL_comppad; |
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413 | c->compcv = PL_compcv; |
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414 | c->stack_base = PL_stack_base; |
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415 | c->stack_max = PL_stack_max; |
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416 | c->tmps_stack = PL_tmps_stack; |
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417 | c->tmps_floor = PL_tmps_floor; |
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418 | c->tmps_ix = PL_tmps_ix; |
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419 | c->tmps_max = PL_tmps_max; |
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420 | c->markstack = PL_markstack; |
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421 | c->markstack_ptr = PL_markstack_ptr; |
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422 | c->markstack_max = PL_markstack_max; |
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423 | c->scopestack = PL_scopestack; |
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424 | c->scopestack_ix = PL_scopestack_ix; |
|
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425 | c->scopestack_max = PL_scopestack_max; |
|
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426 | c->savestack = PL_savestack; |
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427 | c->savestack_ix = PL_savestack_ix; |
|
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428 | c->savestack_max = PL_savestack_max; |
|
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429 | #if PERL_VERSION < 9 |
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430 | c->retstack = PL_retstack; |
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431 | c->retstack_ix = PL_retstack_ix; |
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432 | c->retstack_max = PL_retstack_max; |
|
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433 | #endif |
|
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434 | c->curpm = PL_curpm; |
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435 | c->curcop = PL_curcop; |
|
|
436 | } |
|
|
437 | |
|
|
438 | /* |
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439 | * allocate various perl stacks. This is an exact copy |
|
|
440 | * of perl.c:init_stacks, except that it uses less memory |
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441 | * on the (sometimes correct) assumption that coroutines do |
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|
442 | * not usually need a lot of stackspace. |
|
|
443 | */ |
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444 | static void |
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445 | coro_init_stacks (pTHX) |
|
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446 | { |
|
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447 | LOCK; |
|
|
448 | |
|
|
449 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
|
|
450 | PL_curstackinfo->si_type = PERLSI_MAIN; |
|
|
451 | PL_curstack = PL_curstackinfo->si_stack; |
|
|
452 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
|
|
453 | |
|
|
454 | PL_stack_base = AvARRAY(PL_curstack); |
|
|
455 | PL_stack_sp = PL_stack_base; |
|
|
456 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
|
|
457 | |
|
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458 | New(50,PL_tmps_stack,96,SV*); |
|
|
459 | PL_tmps_floor = -1; |
|
|
460 | PL_tmps_ix = -1; |
|
|
461 | PL_tmps_max = 96; |
|
|
462 | |
|
|
463 | New(54,PL_markstack,16,I32); |
|
|
464 | PL_markstack_ptr = PL_markstack; |
|
|
465 | PL_markstack_max = PL_markstack + 16; |
|
|
466 | |
|
|
467 | #ifdef SET_MARK_OFFSET |
|
|
468 | SET_MARK_OFFSET; |
|
|
469 | #endif |
|
|
470 | |
|
|
471 | New(54,PL_scopestack,16,I32); |
|
|
472 | PL_scopestack_ix = 0; |
|
|
473 | PL_scopestack_max = 16; |
|
|
474 | |
|
|
475 | New(54,PL_savestack,96,ANY); |
|
|
476 | PL_savestack_ix = 0; |
|
|
477 | PL_savestack_max = 96; |
|
|
478 | |
|
|
479 | #if PERL_VERSION < 9 |
|
|
480 | New(54,PL_retstack,8,OP*); |
|
|
481 | PL_retstack_ix = 0; |
|
|
482 | PL_retstack_max = 8; |
|
|
483 | #endif |
|
|
484 | |
|
|
485 | UNLOCK; |
|
|
486 | } |
|
|
487 | |
|
|
488 | /* |
|
|
489 | * destroy the stacks, the callchain etc... |
|
|
490 | */ |
|
|
491 | static void |
|
|
492 | destroy_stacks(pTHX) |
|
|
493 | { |
|
|
494 | if (!IN_DESTRUCT) |
|
|
495 | { |
|
|
496 | /* is this ugly, I ask? */ |
|
|
497 | LEAVE_SCOPE (0); |
|
|
498 | |
|
|
499 | /* sure it is, but more important: is it correct?? :/ */ |
|
|
500 | FREETMPS; |
|
|
501 | |
|
|
502 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
|
|
503 | } |
|
|
504 | |
|
|
505 | while (PL_curstackinfo->si_next) |
|
|
506 | PL_curstackinfo = PL_curstackinfo->si_next; |
|
|
507 | |
|
|
508 | while (PL_curstackinfo) |
|
|
509 | { |
|
|
510 | PERL_SI *p = PL_curstackinfo->si_prev; |
|
|
511 | |
|
|
512 | { /*D*//*remove*/ |
|
|
513 | dSP; |
|
|
514 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
515 | PUTBACK; /* possibly superfluous */ |
|
|
516 | } |
|
|
517 | |
|
|
518 | if (!IN_DESTRUCT) |
|
|
519 | { |
|
|
520 | dounwind (-1);/*D*//*remove*/ |
|
|
521 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
|
|
522 | } |
|
|
523 | |
|
|
524 | Safefree (PL_curstackinfo->si_cxstack); |
|
|
525 | Safefree (PL_curstackinfo); |
|
|
526 | PL_curstackinfo = p; |
|
|
527 | } |
|
|
528 | |
|
|
529 | Safefree (PL_tmps_stack); |
|
|
530 | Safefree (PL_markstack); |
|
|
531 | Safefree (PL_scopestack); |
|
|
532 | Safefree (PL_savestack); |
|
|
533 | #if PERL_VERSION < 9 |
|
|
534 | Safefree (PL_retstack); |
|
|
535 | #endif |
|
|
536 | } |
|
|
537 | |
|
|
538 | static void |
|
|
539 | setup_coro (struct coro *coro) |
|
|
540 | { |
|
|
541 | /* |
|
|
542 | * emulate part of the perl startup here. |
|
|
543 | */ |
|
|
544 | dTHX; |
|
|
545 | dSP; |
|
|
546 | UNOP myop; |
|
|
547 | SV *sub_init = (SV *)get_cv ("Coro::State::coro_init", FALSE); |
|
|
548 | |
|
|
549 | coro_init_stacks (aTHX); |
|
|
550 | /*PL_curcop = 0;*/ |
|
|
551 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
|
|
552 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
553 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
554 | |
|
|
555 | SPAGAIN; |
|
|
556 | |
|
|
557 | Zero (&myop, 1, UNOP); |
|
|
558 | myop.op_next = Nullop; |
|
|
559 | myop.op_flags = OPf_WANT_VOID; |
|
|
560 | |
|
|
561 | PL_op = (OP *)&myop; |
|
|
562 | |
|
|
563 | PUSHMARK(SP); |
|
|
564 | XPUSHs (sub_init); |
|
|
565 | PUTBACK; |
|
|
566 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
567 | SPAGAIN; |
|
|
568 | |
|
|
569 | ENTER; /* necessary e.g. for dounwind */ |
|
|
570 | } |
|
|
571 | |
|
|
572 | static void |
|
|
573 | free_coro_mortal () |
|
|
574 | { |
|
|
575 | if (coro_mortal) |
|
|
576 | { |
|
|
577 | SvREFCNT_dec (coro_mortal); |
|
|
578 | coro_mortal = 0; |
|
|
579 | } |
|
|
580 | } |
|
|
581 | |
|
|
582 | static void |
|
|
583 | coro_run (void *arg) |
|
|
584 | { |
|
|
585 | /* |
|
|
586 | * this is a _very_ stripped down perl interpreter ;) |
|
|
587 | */ |
|
|
588 | dTHX; |
|
|
589 | PL_top_env = &PL_start_env; |
|
|
590 | |
|
|
591 | UNLOCK; |
|
|
592 | |
|
|
593 | sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg)); |
|
|
594 | sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op)); |
|
|
595 | PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE)); |
|
|
596 | |
|
|
597 | /* somebody will hit me for both perl_run and PL_restart_op */ |
|
|
598 | perl_run (aTHX_ PERL_GET_CONTEXT); |
|
|
599 | |
|
|
600 | abort (); |
|
|
601 | } |
|
|
602 | |
|
|
603 | static coro_stack * |
|
|
604 | stack_new () |
|
|
605 | { |
|
|
606 | coro_stack *stack; |
|
|
607 | |
|
|
608 | New (0, stack, 1, coro_stack); |
|
|
609 | |
|
|
610 | #if HAVE_MMAP |
|
|
611 | |
|
|
612 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */ |
|
|
613 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
614 | |
|
|
615 | if (stack->sptr == (void *)-1) |
|
|
616 | { |
|
|
617 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
618 | _exit (EXIT_FAILURE); |
|
|
619 | } |
|
|
620 | |
|
|
621 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
622 | |
|
|
623 | #else |
|
|
624 | |
|
|
625 | stack->ssize = STACKSIZE * (long)sizeof (long); |
|
|
626 | New (0, stack->sptr, STACKSIZE, long); |
|
|
627 | |
|
|
628 | if (!stack->sptr) |
|
|
629 | { |
|
|
630 | perror (stderr, "FATAL: unable to malloc stack for coroutine"); |
|
|
631 | _exit (EXIT_FAILURE); |
|
|
632 | } |
|
|
633 | |
|
|
634 | #endif |
|
|
635 | |
|
|
636 | coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize); |
|
|
637 | |
|
|
638 | return stack; |
|
|
639 | } |
|
|
640 | |
|
|
641 | static void |
|
|
642 | stack_free (coro_stack *stack) |
|
|
643 | { |
|
|
644 | if (!stack || stack == main_stack) |
|
|
645 | return; |
|
|
646 | |
|
|
647 | #if HAVE_MMAP |
|
|
648 | munmap (stack->sptr, stack->ssize); |
|
|
649 | #else |
|
|
650 | Safefree (stack->sptr); |
|
|
651 | #endif |
|
|
652 | |
|
|
653 | Safefree (stack); |
|
|
654 | } |
|
|
655 | |
|
|
656 | static coro_stack *stack_first; |
|
|
657 | |
|
|
658 | static coro_stack * |
|
|
659 | stack_get () |
|
|
660 | { |
|
|
661 | coro_stack *stack; |
|
|
662 | |
|
|
663 | if (stack_first) |
|
|
664 | { |
|
|
665 | stack = stack_first; |
|
|
666 | stack_first = stack->next; |
|
|
667 | } |
|
|
668 | else |
|
|
669 | { |
|
|
670 | stack = stack_new (); |
|
|
671 | PL_op = PL_op->op_next; |
|
|
672 | } |
|
|
673 | |
|
|
674 | return stack; |
|
|
675 | } |
|
|
676 | |
|
|
677 | static void |
|
|
678 | stack_put (coro_stack *stack) |
|
|
679 | { |
|
|
680 | stack->next = stack_first; |
|
|
681 | stack_first = stack; |
|
|
682 | } |
|
|
683 | |
|
|
684 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
685 | static void |
|
|
686 | transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
687 | { |
|
|
688 | dSTACKLEVEL; |
|
|
689 | |
|
|
690 | /* sometimes transfer is only called to set idle_sp */ |
|
|
691 | if (flags == TRANSFER_SET_STACKLEVEL) |
|
|
692 | ((coro_stack *)prev)->idle_sp = STACKLEVEL; |
|
|
693 | else if (prev != next) |
|
|
694 | { |
|
|
695 | coro_stack *prev__stack; |
|
|
696 | |
|
|
697 | LOCK; |
|
|
698 | |
|
|
699 | if (next->mainstack) |
|
|
700 | { |
|
|
701 | /* coroutine already started */ |
|
|
702 | SAVE (prev, flags); |
|
|
703 | LOAD (next); |
|
|
704 | } |
|
|
705 | else |
|
|
706 | { |
|
|
707 | /* need to start coroutine */ |
|
|
708 | /* first get rid of the old state */ |
|
|
709 | SAVE (prev, -1); |
|
|
710 | /* setup coroutine call */ |
|
|
711 | setup_coro (next); |
|
|
712 | /* need a stack */ |
|
|
713 | next->stack = 0; |
|
|
714 | } |
|
|
715 | |
|
|
716 | prev__stack = prev->stack; |
|
|
717 | |
|
|
718 | /* possibly "free" the stack */ |
|
|
719 | if (prev__stack->idle_sp == STACKLEVEL) |
|
|
720 | { |
|
|
721 | stack_put (prev__stack); |
|
|
722 | prev->stack = 0; |
|
|
723 | } |
|
|
724 | |
|
|
725 | if (!next->stack) |
|
|
726 | next->stack = stack_get (); |
|
|
727 | |
|
|
728 | if (prev__stack != next->stack) |
|
|
729 | { |
|
|
730 | prev__stack->top_env = PL_top_env; |
|
|
731 | PL_top_env = next->stack->top_env; |
|
|
732 | coro_transfer (&prev__stack->cctx, &next->stack->cctx); |
|
|
733 | } |
|
|
734 | |
|
|
735 | free_coro_mortal (); |
|
|
736 | |
|
|
737 | UNLOCK; |
|
|
738 | } |
|
|
739 | } |
|
|
740 | |
|
|
741 | /* use this function pointer to call the above function */ |
|
|
742 | /* this is done to increase chances of the compiler not inlining the call */ |
|
|
743 | /* not static to make it even harder for the compiler (and theoretically impossible in most cases */ |
|
|
744 | void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl; |
|
|
745 | |
|
|
746 | struct transfer_args |
|
|
747 | { |
|
|
748 | struct coro *prev, *next; |
|
|
749 | int flags; |
|
|
750 | }; |
|
|
751 | |
|
|
752 | #define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags) |
|
|
753 | |
|
|
754 | static void |
|
|
755 | coro_state_destroy (struct coro *coro) |
|
|
756 | { |
|
|
757 | if (coro->refcnt--) |
|
|
758 | return; |
|
|
759 | |
|
|
760 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
761 | { |
|
|
762 | struct coro temp; |
|
|
763 | |
|
|
764 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
|
|
765 | LOAD (aTHX_ coro); |
|
|
766 | |
|
|
767 | destroy_stacks (aTHX); |
|
|
768 | |
|
|
769 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
770 | |
|
|
771 | coro->mainstack = 0; |
|
|
772 | } |
|
|
773 | |
|
|
774 | stack_free (coro->stack); |
|
|
775 | SvREFCNT_dec (coro->args); |
|
|
776 | Safefree (coro); |
|
|
777 | } |
|
|
778 | |
|
|
779 | static int |
|
|
780 | coro_state_clear (SV *sv, MAGIC *mg) |
|
|
781 | { |
|
|
782 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
783 | mg->mg_ptr = 0; |
|
|
784 | |
|
|
785 | coro_state_destroy (coro); |
|
|
786 | |
|
|
787 | return 0; |
|
|
788 | } |
|
|
789 | |
|
|
790 | static int |
|
|
791 | coro_state_dup (MAGIC *mg, CLONE_PARAMS *params) |
|
|
792 | { |
|
|
793 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
794 | |
|
|
795 | ++coro->refcnt; |
|
|
796 | |
|
|
797 | return 0; |
|
|
798 | } |
|
|
799 | |
|
|
800 | static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 }; |
|
|
801 | |
|
|
802 | static struct coro * |
|
|
803 | SvSTATE (SV *coro) |
|
|
804 | { |
|
|
805 | HV *stash; |
|
|
806 | MAGIC *mg; |
|
|
807 | |
|
|
808 | if (SvROK (coro)) |
|
|
809 | coro = SvRV (coro); |
|
|
810 | |
|
|
811 | stash = SvSTASH (coro); |
|
|
812 | if (stash != coro_stash && stash != coro_state_stash) |
|
|
813 | { |
|
|
814 | /* very slow, but rare, check */ |
|
|
815 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
816 | croak ("Coro::State object required"); |
|
|
817 | } |
|
|
818 | |
|
|
819 | mg = SvMAGIC (coro); |
|
|
820 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
821 | return (struct coro *)mg->mg_ptr; |
|
|
822 | } |
|
|
823 | |
|
|
824 | static void |
|
|
825 | prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev, SV *next, int flags) |
|
|
826 | { |
|
|
827 | ta->prev = SvSTATE (prev); |
|
|
828 | ta->next = SvSTATE (next); |
|
|
829 | ta->flags = flags; |
|
|
830 | } |
|
|
831 | |
|
|
832 | static void |
|
|
833 | api_transfer (SV *prev, SV *next, int flags) |
|
|
834 | { |
|
|
835 | dTHX; |
|
|
836 | struct transfer_args ta; |
|
|
837 | |
|
|
838 | prepare_transfer (aTHX_ &ta, prev, next, flags); |
|
|
839 | TRANSFER (ta); |
|
|
840 | } |
|
|
841 | |
301 | |
842 | /** Coro ********************************************************************/ |
302 | /** Coro ********************************************************************/ |
843 | |
303 | |
844 | #define PRIO_MAX 3 |
304 | #define PRIO_MAX 3 |
845 | #define PRIO_HIGH 1 |
305 | #define PRIO_HIGH 1 |
… | |
… | |
847 | #define PRIO_LOW -1 |
307 | #define PRIO_LOW -1 |
848 | #define PRIO_IDLE -3 |
308 | #define PRIO_IDLE -3 |
849 | #define PRIO_MIN -4 |
309 | #define PRIO_MIN -4 |
850 | |
310 | |
851 | /* for Coro.pm */ |
311 | /* for Coro.pm */ |
852 | static GV *coro_current, *coro_idle; |
312 | static SV *coro_current; |
|
|
313 | static SV *coro_readyhook; |
853 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
314 | static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; |
854 | static int coro_nready; |
315 | static CV *cv_coro_run, *cv_coro_terminate; |
|
|
316 | static struct coro *coro_first; |
|
|
317 | #define coro_nready coroapi.nready |
855 | |
318 | |
856 | static void |
319 | /** lowlevel stuff **********************************************************/ |
857 | coro_enq (pTHX_ SV *sv) |
|
|
858 | { |
|
|
859 | int prio; |
|
|
860 | |
|
|
861 | if (SvTYPE (sv) != SVt_PVHV) |
|
|
862 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
863 | |
|
|
864 | prio = SvSTATE (sv)->prio; |
|
|
865 | |
|
|
866 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
867 | coro_nready++; |
|
|
868 | } |
|
|
869 | |
320 | |
870 | static SV * |
321 | static SV * |
871 | coro_deq (pTHX_ int min_prio) |
322 | coro_get_sv (pTHX_ const char *name, int create) |
872 | { |
323 | { |
873 | int prio = PRIO_MAX - PRIO_MIN; |
324 | #if PERL_VERSION_ATLEAST (5,10,0) |
874 | |
325 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
875 | min_prio -= PRIO_MIN; |
326 | get_sv (name, create); |
876 | if (min_prio < 0) |
327 | #endif |
877 | min_prio = 0; |
328 | return get_sv (name, create); |
878 | |
|
|
879 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
|
|
880 | if (AvFILLp (coro_ready [prio]) >= 0) |
|
|
881 | { |
|
|
882 | coro_nready--; |
|
|
883 | return av_shift (coro_ready [prio]); |
|
|
884 | } |
|
|
885 | |
|
|
886 | return 0; |
|
|
887 | } |
329 | } |
888 | |
330 | |
889 | static void |
331 | static AV * |
890 | api_ready (SV *coro) |
332 | coro_get_av (pTHX_ const char *name, int create) |
891 | { |
333 | { |
892 | dTHX; |
334 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
335 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
|
|
336 | get_av (name, create); |
|
|
337 | #endif |
|
|
338 | return get_av (name, create); |
|
|
339 | } |
|
|
340 | |
|
|
341 | static HV * |
|
|
342 | coro_get_hv (pTHX_ const char *name, int create) |
|
|
343 | { |
|
|
344 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
345 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
|
|
346 | get_hv (name, create); |
|
|
347 | #endif |
|
|
348 | return get_hv (name, create); |
|
|
349 | } |
|
|
350 | |
|
|
351 | /* may croak */ |
|
|
352 | INLINE CV * |
|
|
353 | coro_sv_2cv (pTHX_ SV *sv) |
|
|
354 | { |
|
|
355 | HV *st; |
|
|
356 | GV *gvp; |
|
|
357 | return sv_2cv (sv, &st, &gvp, 0); |
|
|
358 | } |
|
|
359 | |
|
|
360 | /*****************************************************************************/ |
|
|
361 | /* magic glue */ |
|
|
362 | |
|
|
363 | #define CORO_MAGIC_type_cv 26 |
|
|
364 | #define CORO_MAGIC_type_state PERL_MAGIC_ext |
|
|
365 | |
|
|
366 | #define CORO_MAGIC_NN(sv, type) \ |
|
|
367 | (expect_true (SvMAGIC (sv)->mg_type == type) \ |
|
|
368 | ? SvMAGIC (sv) \ |
|
|
369 | : mg_find (sv, type)) |
|
|
370 | |
|
|
371 | #define CORO_MAGIC(sv, type) \ |
|
|
372 | (expect_true (SvMAGIC (sv)) \ |
|
|
373 | ? CORO_MAGIC_NN (sv, type) \ |
|
|
374 | : 0) |
|
|
375 | |
|
|
376 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
|
|
377 | #define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) |
|
|
378 | |
|
|
379 | INLINE struct coro * |
|
|
380 | SvSTATE_ (pTHX_ SV *coro) |
|
|
381 | { |
|
|
382 | HV *stash; |
|
|
383 | MAGIC *mg; |
893 | |
384 | |
894 | if (SvROK (coro)) |
385 | if (SvROK (coro)) |
895 | coro = SvRV (coro); |
386 | coro = SvRV (coro); |
896 | |
387 | |
897 | LOCK; |
388 | if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
898 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
389 | croak ("Coro::State object required"); |
899 | UNLOCK; |
|
|
900 | } |
|
|
901 | |
390 | |
|
|
391 | stash = SvSTASH (coro); |
|
|
392 | if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
|
|
393 | { |
|
|
394 | /* very slow, but rare, check */ |
|
|
395 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
396 | croak ("Coro::State object required"); |
|
|
397 | } |
|
|
398 | |
|
|
399 | mg = CORO_MAGIC_state (coro); |
|
|
400 | return (struct coro *)mg->mg_ptr; |
|
|
401 | } |
|
|
402 | |
|
|
403 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
|
|
404 | |
|
|
405 | /* faster than SvSTATE, but expects a coroutine hv */ |
|
|
406 | #define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr) |
|
|
407 | #define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
|
|
408 | |
|
|
409 | /*****************************************************************************/ |
|
|
410 | /* padlist management and caching */ |
|
|
411 | |
|
|
412 | static AV * |
|
|
413 | coro_derive_padlist (pTHX_ CV *cv) |
|
|
414 | { |
|
|
415 | AV *padlist = CvPADLIST (cv); |
|
|
416 | AV *newpadlist, *newpad; |
|
|
417 | |
|
|
418 | newpadlist = newAV (); |
|
|
419 | AvREAL_off (newpadlist); |
|
|
420 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
421 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
|
|
422 | #else |
|
|
423 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
|
|
424 | #endif |
|
|
425 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
|
|
426 | --AvFILLp (padlist); |
|
|
427 | |
|
|
428 | av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0])); |
|
|
429 | av_store (newpadlist, 1, (SV *)newpad); |
|
|
430 | |
|
|
431 | return newpadlist; |
|
|
432 | } |
|
|
433 | |
|
|
434 | static void |
|
|
435 | free_padlist (pTHX_ AV *padlist) |
|
|
436 | { |
|
|
437 | /* may be during global destruction */ |
|
|
438 | if (!IN_DESTRUCT) |
|
|
439 | { |
|
|
440 | I32 i = AvFILLp (padlist); |
|
|
441 | |
|
|
442 | while (i > 0) /* special-case index 0 */ |
|
|
443 | { |
|
|
444 | /* we try to be extra-careful here */ |
|
|
445 | AV *av = (AV *)AvARRAY (padlist)[i--]; |
|
|
446 | I32 j = AvFILLp (av); |
|
|
447 | |
|
|
448 | while (j >= 0) |
|
|
449 | SvREFCNT_dec (AvARRAY (av)[j--]); |
|
|
450 | |
|
|
451 | AvFILLp (av) = -1; |
|
|
452 | SvREFCNT_dec (av); |
|
|
453 | } |
|
|
454 | |
|
|
455 | SvREFCNT_dec (AvARRAY (padlist)[0]); |
|
|
456 | |
|
|
457 | AvFILLp (padlist) = -1; |
|
|
458 | SvREFCNT_dec ((SV*)padlist); |
|
|
459 | } |
|
|
460 | } |
|
|
461 | |
902 | static void |
462 | static int |
|
|
463 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
464 | { |
|
|
465 | AV *padlist; |
|
|
466 | AV *av = (AV *)mg->mg_obj; |
|
|
467 | |
|
|
468 | /* casting is fun. */ |
|
|
469 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
|
|
470 | free_padlist (aTHX_ padlist); |
|
|
471 | |
|
|
472 | SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
|
|
473 | |
|
|
474 | return 0; |
|
|
475 | } |
|
|
476 | |
|
|
477 | static MGVTBL coro_cv_vtbl = { |
|
|
478 | 0, 0, 0, 0, |
|
|
479 | coro_cv_free |
|
|
480 | }; |
|
|
481 | |
|
|
482 | /* the next two functions merely cache the padlists */ |
|
|
483 | static void |
|
|
484 | get_padlist (pTHX_ CV *cv) |
|
|
485 | { |
|
|
486 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
487 | AV *av; |
|
|
488 | |
|
|
489 | if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
|
|
490 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
|
|
491 | else |
|
|
492 | { |
|
|
493 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
494 | /* this is probably cleaner? but also slower! */ |
|
|
495 | /* in practise, it seems to be less stable */ |
|
|
496 | CV *cp = Perl_cv_clone (aTHX_ cv); |
|
|
497 | CvPADLIST (cv) = CvPADLIST (cp); |
|
|
498 | CvPADLIST (cp) = 0; |
|
|
499 | SvREFCNT_dec (cp); |
|
|
500 | #else |
|
|
501 | CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); |
|
|
502 | #endif |
|
|
503 | } |
|
|
504 | } |
|
|
505 | |
|
|
506 | static void |
|
|
507 | put_padlist (pTHX_ CV *cv) |
|
|
508 | { |
|
|
509 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
510 | AV *av; |
|
|
511 | |
|
|
512 | if (expect_false (!mg)) |
|
|
513 | mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
|
|
514 | |
|
|
515 | av = (AV *)mg->mg_obj; |
|
|
516 | |
|
|
517 | if (expect_false (AvFILLp (av) >= AvMAX (av))) |
|
|
518 | av_extend (av, AvFILLp (av) + 1); |
|
|
519 | |
|
|
520 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
|
|
521 | } |
|
|
522 | |
|
|
523 | /** load & save, init *******************************************************/ |
|
|
524 | |
|
|
525 | static void |
|
|
526 | load_perl (pTHX_ Coro__State c) |
|
|
527 | { |
|
|
528 | perl_slots *slot = c->slot; |
|
|
529 | c->slot = 0; |
|
|
530 | |
|
|
531 | PL_mainstack = c->mainstack; |
|
|
532 | |
|
|
533 | GvSV (PL_defgv) = slot->defsv; |
|
|
534 | GvAV (PL_defgv) = slot->defav; |
|
|
535 | GvSV (PL_errgv) = slot->errsv; |
|
|
536 | GvSV (irsgv) = slot->irsgv; |
|
|
537 | GvHV (PL_hintgv) = slot->hinthv; |
|
|
538 | |
|
|
539 | #define VAR(name,type) PL_ ## name = slot->name; |
|
|
540 | # include "state.h" |
|
|
541 | #undef VAR |
|
|
542 | |
|
|
543 | { |
|
|
544 | dSP; |
|
|
545 | |
|
|
546 | CV *cv; |
|
|
547 | |
|
|
548 | /* now do the ugly restore mess */ |
|
|
549 | while (expect_true (cv = (CV *)POPs)) |
|
|
550 | { |
|
|
551 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
|
|
552 | CvDEPTH (cv) = PTR2IV (POPs); |
|
|
553 | CvPADLIST (cv) = (AV *)POPs; |
|
|
554 | } |
|
|
555 | |
|
|
556 | PUTBACK; |
|
|
557 | } |
|
|
558 | |
|
|
559 | slf_frame = c->slf_frame; |
|
|
560 | CORO_THROW = c->except; |
|
|
561 | } |
|
|
562 | |
|
|
563 | static void |
|
|
564 | save_perl (pTHX_ Coro__State c) |
|
|
565 | { |
|
|
566 | c->except = CORO_THROW; |
|
|
567 | c->slf_frame = slf_frame; |
|
|
568 | |
|
|
569 | { |
|
|
570 | dSP; |
|
|
571 | I32 cxix = cxstack_ix; |
|
|
572 | PERL_CONTEXT *ccstk = cxstack; |
|
|
573 | PERL_SI *top_si = PL_curstackinfo; |
|
|
574 | |
|
|
575 | /* |
|
|
576 | * the worst thing you can imagine happens first - we have to save |
|
|
577 | * (and reinitialize) all cv's in the whole callchain :( |
|
|
578 | */ |
|
|
579 | |
|
|
580 | XPUSHs (Nullsv); |
|
|
581 | /* this loop was inspired by pp_caller */ |
|
|
582 | for (;;) |
|
|
583 | { |
|
|
584 | while (expect_true (cxix >= 0)) |
|
|
585 | { |
|
|
586 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
|
|
587 | |
|
|
588 | if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) |
|
|
589 | { |
|
|
590 | CV *cv = cx->blk_sub.cv; |
|
|
591 | |
|
|
592 | if (expect_true (CvDEPTH (cv))) |
|
|
593 | { |
|
|
594 | EXTEND (SP, 3); |
|
|
595 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
596 | PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
|
|
597 | PUSHs ((SV *)cv); |
|
|
598 | |
|
|
599 | CvDEPTH (cv) = 0; |
|
|
600 | get_padlist (aTHX_ cv); |
|
|
601 | } |
|
|
602 | } |
|
|
603 | } |
|
|
604 | |
|
|
605 | if (expect_true (top_si->si_type == PERLSI_MAIN)) |
|
|
606 | break; |
|
|
607 | |
|
|
608 | top_si = top_si->si_prev; |
|
|
609 | ccstk = top_si->si_cxstack; |
|
|
610 | cxix = top_si->si_cxix; |
|
|
611 | } |
|
|
612 | |
|
|
613 | PUTBACK; |
|
|
614 | } |
|
|
615 | |
|
|
616 | /* allocate some space on the context stack for our purposes */ |
|
|
617 | /* we manually unroll here, as usually 2 slots is enough */ |
|
|
618 | if (SLOT_COUNT >= 1) CXINC; |
|
|
619 | if (SLOT_COUNT >= 2) CXINC; |
|
|
620 | if (SLOT_COUNT >= 3) CXINC; |
|
|
621 | { |
|
|
622 | int i; |
|
|
623 | for (i = 3; i < SLOT_COUNT; ++i) |
|
|
624 | CXINC; |
|
|
625 | } |
|
|
626 | cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
|
|
627 | |
|
|
628 | c->mainstack = PL_mainstack; |
|
|
629 | |
|
|
630 | { |
|
|
631 | perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
|
|
632 | |
|
|
633 | slot->defav = GvAV (PL_defgv); |
|
|
634 | slot->defsv = DEFSV; |
|
|
635 | slot->errsv = ERRSV; |
|
|
636 | slot->irsgv = GvSV (irsgv); |
|
|
637 | slot->hinthv = GvHV (PL_hintgv); |
|
|
638 | |
|
|
639 | #define VAR(name,type) slot->name = PL_ ## name; |
|
|
640 | # include "state.h" |
|
|
641 | #undef VAR |
|
|
642 | } |
|
|
643 | } |
|
|
644 | |
|
|
645 | /* |
|
|
646 | * allocate various perl stacks. This is almost an exact copy |
|
|
647 | * of perl.c:init_stacks, except that it uses less memory |
|
|
648 | * on the (sometimes correct) assumption that coroutines do |
|
|
649 | * not usually need a lot of stackspace. |
|
|
650 | */ |
|
|
651 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
652 | # define coro_init_stacks(thx) init_stacks () |
|
|
653 | #else |
|
|
654 | static void |
|
|
655 | coro_init_stacks (pTHX) |
|
|
656 | { |
|
|
657 | PL_curstackinfo = new_stackinfo(32, 8); |
|
|
658 | PL_curstackinfo->si_type = PERLSI_MAIN; |
|
|
659 | PL_curstack = PL_curstackinfo->si_stack; |
|
|
660 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
|
|
661 | |
|
|
662 | PL_stack_base = AvARRAY(PL_curstack); |
|
|
663 | PL_stack_sp = PL_stack_base; |
|
|
664 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
|
|
665 | |
|
|
666 | New(50,PL_tmps_stack,32,SV*); |
|
|
667 | PL_tmps_floor = -1; |
|
|
668 | PL_tmps_ix = -1; |
|
|
669 | PL_tmps_max = 32; |
|
|
670 | |
|
|
671 | New(54,PL_markstack,16,I32); |
|
|
672 | PL_markstack_ptr = PL_markstack; |
|
|
673 | PL_markstack_max = PL_markstack + 16; |
|
|
674 | |
|
|
675 | #ifdef SET_MARK_OFFSET |
|
|
676 | SET_MARK_OFFSET; |
|
|
677 | #endif |
|
|
678 | |
|
|
679 | New(54,PL_scopestack,8,I32); |
|
|
680 | PL_scopestack_ix = 0; |
|
|
681 | PL_scopestack_max = 8; |
|
|
682 | |
|
|
683 | New(54,PL_savestack,24,ANY); |
|
|
684 | PL_savestack_ix = 0; |
|
|
685 | PL_savestack_max = 24; |
|
|
686 | |
|
|
687 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
688 | New(54,PL_retstack,4,OP*); |
|
|
689 | PL_retstack_ix = 0; |
|
|
690 | PL_retstack_max = 4; |
|
|
691 | #endif |
|
|
692 | } |
|
|
693 | #endif |
|
|
694 | |
|
|
695 | /* |
|
|
696 | * destroy the stacks, the callchain etc... |
|
|
697 | */ |
|
|
698 | static void |
|
|
699 | coro_destruct_stacks (pTHX) |
|
|
700 | { |
|
|
701 | while (PL_curstackinfo->si_next) |
|
|
702 | PL_curstackinfo = PL_curstackinfo->si_next; |
|
|
703 | |
|
|
704 | while (PL_curstackinfo) |
|
|
705 | { |
|
|
706 | PERL_SI *p = PL_curstackinfo->si_prev; |
|
|
707 | |
|
|
708 | if (!IN_DESTRUCT) |
|
|
709 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
|
|
710 | |
|
|
711 | Safefree (PL_curstackinfo->si_cxstack); |
|
|
712 | Safefree (PL_curstackinfo); |
|
|
713 | PL_curstackinfo = p; |
|
|
714 | } |
|
|
715 | |
|
|
716 | Safefree (PL_tmps_stack); |
|
|
717 | Safefree (PL_markstack); |
|
|
718 | Safefree (PL_scopestack); |
|
|
719 | Safefree (PL_savestack); |
|
|
720 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
721 | Safefree (PL_retstack); |
|
|
722 | #endif |
|
|
723 | } |
|
|
724 | |
|
|
725 | #define CORO_RSS \ |
|
|
726 | rss += sizeof (SYM (curstackinfo)); \ |
|
|
727 | rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \ |
|
|
728 | rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \ |
|
|
729 | rss += SYM (tmps_max) * sizeof (SV *); \ |
|
|
730 | rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \ |
|
|
731 | rss += SYM (scopestack_max) * sizeof (I32); \ |
|
|
732 | rss += SYM (savestack_max) * sizeof (ANY); |
|
|
733 | |
|
|
734 | static size_t |
|
|
735 | coro_rss (pTHX_ struct coro *coro) |
|
|
736 | { |
|
|
737 | size_t rss = sizeof (*coro); |
|
|
738 | |
|
|
739 | if (coro->mainstack) |
|
|
740 | { |
|
|
741 | if (coro->flags & CF_RUNNING) |
|
|
742 | { |
|
|
743 | #define SYM(sym) PL_ ## sym |
|
|
744 | CORO_RSS; |
|
|
745 | #undef SYM |
|
|
746 | } |
|
|
747 | else |
|
|
748 | { |
|
|
749 | #define SYM(sym) coro->slot->sym |
|
|
750 | CORO_RSS; |
|
|
751 | #undef SYM |
|
|
752 | } |
|
|
753 | } |
|
|
754 | |
|
|
755 | return rss; |
|
|
756 | } |
|
|
757 | |
|
|
758 | /** coroutine stack handling ************************************************/ |
|
|
759 | |
|
|
760 | static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
|
|
761 | static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
|
|
762 | static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
|
|
763 | |
|
|
764 | /* apparently < 5.8.8 */ |
|
|
765 | #ifndef MgPV_nolen_const |
|
|
766 | #define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
|
|
767 | SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
|
|
768 | (const char*)(mg)->mg_ptr) |
|
|
769 | #endif |
|
|
770 | |
|
|
771 | /* |
|
|
772 | * This overrides the default magic get method of %SIG elements. |
|
|
773 | * The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
|
|
774 | * and instead of tryign to save and restore the hash elements, we just provide |
|
|
775 | * readback here. |
|
|
776 | * We only do this when the hook is != 0, as they are often set to 0 temporarily, |
|
|
777 | * not expecting this to actually change the hook. This is a potential problem |
|
|
778 | * when a schedule happens then, but we ignore this. |
|
|
779 | */ |
|
|
780 | static int |
|
|
781 | coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
|
|
782 | { |
|
|
783 | const char *s = MgPV_nolen_const (mg); |
|
|
784 | |
|
|
785 | if (*s == '_') |
|
|
786 | { |
|
|
787 | SV **svp = 0; |
|
|
788 | |
|
|
789 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
790 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
791 | |
|
|
792 | if (svp) |
|
|
793 | { |
|
|
794 | sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
|
|
795 | return 0; |
|
|
796 | } |
|
|
797 | } |
|
|
798 | |
|
|
799 | return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
|
|
800 | } |
|
|
801 | |
|
|
802 | static int |
|
|
803 | coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
|
|
804 | { |
|
|
805 | const char *s = MgPV_nolen_const (mg); |
|
|
806 | |
|
|
807 | if (*s == '_') |
|
|
808 | { |
|
|
809 | SV **svp = 0; |
|
|
810 | |
|
|
811 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
812 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
813 | |
|
|
814 | if (svp) |
|
|
815 | { |
|
|
816 | SV *old = *svp; |
|
|
817 | *svp = 0; |
|
|
818 | SvREFCNT_dec (old); |
|
|
819 | return 0; |
|
|
820 | } |
|
|
821 | } |
|
|
822 | |
|
|
823 | return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
|
|
824 | } |
|
|
825 | |
|
|
826 | static int |
|
|
827 | coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
|
|
828 | { |
|
|
829 | const char *s = MgPV_nolen_const (mg); |
|
|
830 | |
|
|
831 | if (*s == '_') |
|
|
832 | { |
|
|
833 | SV **svp = 0; |
|
|
834 | |
|
|
835 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
836 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
837 | |
|
|
838 | if (svp) |
|
|
839 | { |
|
|
840 | SV *old = *svp; |
|
|
841 | *svp = newSVsv (sv); |
|
|
842 | SvREFCNT_dec (old); |
|
|
843 | return 0; |
|
|
844 | } |
|
|
845 | } |
|
|
846 | |
|
|
847 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
|
|
848 | } |
|
|
849 | |
|
|
850 | static void |
|
|
851 | prepare_nop (pTHX_ struct coro_transfer_args *ta) |
|
|
852 | { |
|
|
853 | /* kind of mega-hacky, but works */ |
|
|
854 | ta->next = ta->prev = (struct coro *)ta; |
|
|
855 | } |
|
|
856 | |
|
|
857 | static int |
|
|
858 | slf_check_nop (pTHX_ struct CoroSLF *frame) |
|
|
859 | { |
|
|
860 | return 0; |
|
|
861 | } |
|
|
862 | |
|
|
863 | static int |
|
|
864 | slf_check_repeat (pTHX_ struct CoroSLF *frame) |
|
|
865 | { |
|
|
866 | return 1; |
|
|
867 | } |
|
|
868 | |
|
|
869 | static UNOP coro_setup_op; |
|
|
870 | |
|
|
871 | static void NOINLINE /* noinline to keep it out of the transfer fast path */ |
|
|
872 | coro_setup (pTHX_ struct coro *coro) |
|
|
873 | { |
|
|
874 | /* |
|
|
875 | * emulate part of the perl startup here. |
|
|
876 | */ |
|
|
877 | coro_init_stacks (aTHX); |
|
|
878 | |
|
|
879 | PL_runops = RUNOPS_DEFAULT; |
|
|
880 | PL_curcop = &PL_compiling; |
|
|
881 | PL_in_eval = EVAL_NULL; |
|
|
882 | PL_comppad = 0; |
|
|
883 | PL_comppad_name = 0; |
|
|
884 | PL_comppad_name_fill = 0; |
|
|
885 | PL_comppad_name_floor = 0; |
|
|
886 | PL_curpm = 0; |
|
|
887 | PL_curpad = 0; |
|
|
888 | PL_localizing = 0; |
|
|
889 | PL_dirty = 0; |
|
|
890 | PL_restartop = 0; |
|
|
891 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
892 | PL_parser = 0; |
|
|
893 | #endif |
|
|
894 | PL_hints = 0; |
|
|
895 | |
|
|
896 | /* recreate the die/warn hooks */ |
|
|
897 | PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
|
|
898 | PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
|
|
899 | |
|
|
900 | GvSV (PL_defgv) = newSV (0); |
|
|
901 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
902 | GvSV (PL_errgv) = newSV (0); |
|
|
903 | GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
|
|
904 | GvHV (PL_hintgv) = 0; |
|
|
905 | PL_rs = newSVsv (GvSV (irsgv)); |
|
|
906 | PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
|
|
907 | |
|
|
908 | { |
|
|
909 | dSP; |
|
|
910 | UNOP myop; |
|
|
911 | |
|
|
912 | Zero (&myop, 1, UNOP); |
|
|
913 | myop.op_next = Nullop; |
|
|
914 | myop.op_type = OP_ENTERSUB; |
|
|
915 | myop.op_flags = OPf_WANT_VOID; |
|
|
916 | |
|
|
917 | PUSHMARK (SP); |
|
|
918 | PUSHs ((SV *)coro->startcv); |
|
|
919 | PUTBACK; |
|
|
920 | PL_op = (OP *)&myop; |
|
|
921 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
922 | } |
|
|
923 | |
|
|
924 | /* this newly created coroutine might be run on an existing cctx which most |
|
|
925 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
|
|
926 | */ |
|
|
927 | slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
|
|
928 | slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
|
|
929 | |
|
|
930 | /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ |
|
|
931 | coro_setup_op.op_next = PL_op; |
|
|
932 | coro_setup_op.op_type = OP_ENTERSUB; |
|
|
933 | coro_setup_op.op_ppaddr = pp_slf; |
|
|
934 | /* no flags etc. required, as an init function won't be called */ |
|
|
935 | |
|
|
936 | PL_op = (OP *)&coro_setup_op; |
|
|
937 | |
|
|
938 | /* copy throw, in case it was set before coro_setup */ |
|
|
939 | CORO_THROW = coro->except; |
|
|
940 | } |
|
|
941 | |
|
|
942 | static void |
|
|
943 | coro_destruct_perl (pTHX_ struct coro *coro) |
|
|
944 | { |
|
|
945 | if (!IN_DESTRUCT) |
|
|
946 | { |
|
|
947 | /* restore all saved variables and stuff */ |
|
|
948 | LEAVE_SCOPE (0); |
|
|
949 | assert (PL_tmps_floor == -1); |
|
|
950 | |
|
|
951 | /* free all temporaries */ |
|
|
952 | FREETMPS; |
|
|
953 | assert (PL_tmps_ix == -1); |
|
|
954 | |
|
|
955 | /* unwind all extra stacks */ |
|
|
956 | POPSTACK_TO (PL_mainstack); |
|
|
957 | |
|
|
958 | /* unwind main stack */ |
|
|
959 | dounwind (-1); |
|
|
960 | } |
|
|
961 | |
|
|
962 | SvREFCNT_dec (GvSV (PL_defgv)); |
|
|
963 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
964 | SvREFCNT_dec (GvSV (PL_errgv)); |
|
|
965 | SvREFCNT_dec (PL_defoutgv); |
|
|
966 | SvREFCNT_dec (PL_rs); |
|
|
967 | SvREFCNT_dec (GvSV (irsgv)); |
|
|
968 | SvREFCNT_dec (GvHV (PL_hintgv)); |
|
|
969 | |
|
|
970 | SvREFCNT_dec (PL_diehook); |
|
|
971 | SvREFCNT_dec (PL_warnhook); |
|
|
972 | |
|
|
973 | SvREFCNT_dec (coro->saved_deffh); |
|
|
974 | SvREFCNT_dec (coro->rouse_cb); |
|
|
975 | SvREFCNT_dec (coro->invoke_cb); |
|
|
976 | SvREFCNT_dec (coro->invoke_av); |
|
|
977 | |
|
|
978 | coro_destruct_stacks (aTHX); |
|
|
979 | } |
|
|
980 | |
|
|
981 | INLINE void |
|
|
982 | free_coro_mortal (pTHX) |
|
|
983 | { |
|
|
984 | if (expect_true (coro_mortal)) |
|
|
985 | { |
|
|
986 | SvREFCNT_dec (coro_mortal); |
|
|
987 | coro_mortal = 0; |
|
|
988 | } |
|
|
989 | } |
|
|
990 | |
|
|
991 | static int |
|
|
992 | runops_trace (pTHX) |
|
|
993 | { |
|
|
994 | COP *oldcop = 0; |
|
|
995 | int oldcxix = -2; |
|
|
996 | |
|
|
997 | while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
|
|
998 | { |
|
|
999 | PERL_ASYNC_CHECK (); |
|
|
1000 | |
|
|
1001 | if (cctx_current->flags & CC_TRACE_ALL) |
|
|
1002 | { |
|
|
1003 | if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB) |
|
|
1004 | { |
|
|
1005 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
1006 | SV **bot, **top; |
|
|
1007 | AV *av = newAV (); /* return values */ |
|
|
1008 | SV **cb; |
|
|
1009 | dSP; |
|
|
1010 | |
|
|
1011 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
1012 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
1013 | if (isGV (gv)) |
|
|
1014 | gv_efullname3 (fullname, gv, 0); |
|
|
1015 | |
|
|
1016 | bot = PL_stack_base + cx->blk_oldsp + 1; |
|
|
1017 | top = cx->blk_gimme == G_ARRAY ? SP + 1 |
|
|
1018 | : cx->blk_gimme == G_SCALAR ? bot + 1 |
|
|
1019 | : bot; |
|
|
1020 | |
|
|
1021 | av_extend (av, top - bot); |
|
|
1022 | while (bot < top) |
|
|
1023 | av_push (av, SvREFCNT_inc_NN (*bot++)); |
|
|
1024 | |
|
|
1025 | PL_runops = RUNOPS_DEFAULT; |
|
|
1026 | ENTER; |
|
|
1027 | SAVETMPS; |
|
|
1028 | EXTEND (SP, 3); |
|
|
1029 | PUSHMARK (SP); |
|
|
1030 | PUSHs (&PL_sv_no); |
|
|
1031 | PUSHs (fullname); |
|
|
1032 | PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
1033 | PUTBACK; |
|
|
1034 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
1035 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1036 | SPAGAIN; |
|
|
1037 | FREETMPS; |
|
|
1038 | LEAVE; |
|
|
1039 | PL_runops = runops_trace; |
|
|
1040 | } |
|
|
1041 | |
|
|
1042 | if (oldcop != PL_curcop) |
|
|
1043 | { |
|
|
1044 | oldcop = PL_curcop; |
|
|
1045 | |
|
|
1046 | if (PL_curcop != &PL_compiling) |
|
|
1047 | { |
|
|
1048 | SV **cb; |
|
|
1049 | |
|
|
1050 | if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB) |
|
|
1051 | { |
|
|
1052 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
1053 | |
|
|
1054 | if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
|
|
1055 | { |
|
|
1056 | dSP; |
|
|
1057 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
1058 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
1059 | |
|
|
1060 | if (isGV (gv)) |
|
|
1061 | gv_efullname3 (fullname, gv, 0); |
|
|
1062 | |
|
|
1063 | PL_runops = RUNOPS_DEFAULT; |
|
|
1064 | ENTER; |
|
|
1065 | SAVETMPS; |
|
|
1066 | EXTEND (SP, 3); |
|
|
1067 | PUSHMARK (SP); |
|
|
1068 | PUSHs (&PL_sv_yes); |
|
|
1069 | PUSHs (fullname); |
|
|
1070 | PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
|
|
1071 | PUTBACK; |
|
|
1072 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
1073 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1074 | SPAGAIN; |
|
|
1075 | FREETMPS; |
|
|
1076 | LEAVE; |
|
|
1077 | PL_runops = runops_trace; |
|
|
1078 | } |
|
|
1079 | |
|
|
1080 | oldcxix = cxstack_ix; |
|
|
1081 | } |
|
|
1082 | |
|
|
1083 | if (cctx_current->flags & CC_TRACE_LINE) |
|
|
1084 | { |
|
|
1085 | dSP; |
|
|
1086 | |
|
|
1087 | PL_runops = RUNOPS_DEFAULT; |
|
|
1088 | ENTER; |
|
|
1089 | SAVETMPS; |
|
|
1090 | EXTEND (SP, 3); |
|
|
1091 | PL_runops = RUNOPS_DEFAULT; |
|
|
1092 | PUSHMARK (SP); |
|
|
1093 | PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
|
|
1094 | PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
|
|
1095 | PUTBACK; |
|
|
1096 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
|
|
1097 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1098 | SPAGAIN; |
|
|
1099 | FREETMPS; |
|
|
1100 | LEAVE; |
|
|
1101 | PL_runops = runops_trace; |
|
|
1102 | } |
|
|
1103 | } |
|
|
1104 | } |
|
|
1105 | } |
|
|
1106 | } |
|
|
1107 | |
|
|
1108 | TAINT_NOT; |
|
|
1109 | return 0; |
|
|
1110 | } |
|
|
1111 | |
|
|
1112 | static struct CoroSLF cctx_ssl_frame; |
|
|
1113 | |
|
|
1114 | static void |
|
|
1115 | slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
|
|
1116 | { |
|
|
1117 | ta->prev = 0; |
|
|
1118 | } |
|
|
1119 | |
|
|
1120 | static int |
|
|
1121 | slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) |
|
|
1122 | { |
|
|
1123 | *frame = cctx_ssl_frame; |
|
|
1124 | |
|
|
1125 | return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ |
|
|
1126 | } |
|
|
1127 | |
|
|
1128 | /* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ |
|
|
1129 | static void NOINLINE |
|
|
1130 | cctx_prepare (pTHX) |
|
|
1131 | { |
|
|
1132 | PL_top_env = &PL_start_env; |
|
|
1133 | |
|
|
1134 | if (cctx_current->flags & CC_TRACE) |
|
|
1135 | PL_runops = runops_trace; |
|
|
1136 | |
|
|
1137 | /* we already must be executing an SLF op, there is no other valid way |
|
|
1138 | * that can lead to creation of a new cctx */ |
|
|
1139 | assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", |
|
|
1140 | slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); |
|
|
1141 | |
|
|
1142 | /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ |
|
|
1143 | cctx_ssl_frame = slf_frame; |
|
|
1144 | |
|
|
1145 | slf_frame.prepare = slf_prepare_set_stacklevel; |
|
|
1146 | slf_frame.check = slf_check_set_stacklevel; |
|
|
1147 | } |
|
|
1148 | |
|
|
1149 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
|
|
1150 | INLINE void |
|
|
1151 | transfer_tail (pTHX) |
|
|
1152 | { |
|
|
1153 | free_coro_mortal (aTHX); |
|
|
1154 | } |
|
|
1155 | |
|
|
1156 | /* |
|
|
1157 | * this is a _very_ stripped down perl interpreter ;) |
|
|
1158 | */ |
|
|
1159 | static void |
|
|
1160 | cctx_run (void *arg) |
|
|
1161 | { |
|
|
1162 | #ifdef USE_ITHREADS |
|
|
1163 | # if CORO_PTHREAD |
|
|
1164 | PERL_SET_CONTEXT (coro_thx); |
|
|
1165 | # endif |
|
|
1166 | #endif |
|
|
1167 | { |
|
|
1168 | dTHX; |
|
|
1169 | |
|
|
1170 | /* normally we would need to skip the entersub here */ |
|
|
1171 | /* not doing so will re-execute it, which is exactly what we want */ |
|
|
1172 | /* PL_nop = PL_nop->op_next */ |
|
|
1173 | |
|
|
1174 | /* inject a fake subroutine call to cctx_init */ |
|
|
1175 | cctx_prepare (aTHX); |
|
|
1176 | |
|
|
1177 | /* cctx_run is the alternative tail of transfer() */ |
|
|
1178 | transfer_tail (aTHX); |
|
|
1179 | |
|
|
1180 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
|
|
1181 | PL_restartop = PL_op; |
|
|
1182 | perl_run (PL_curinterp); |
|
|
1183 | /* |
|
|
1184 | * Unfortunately, there is no way to get at the return values of the |
|
|
1185 | * coro body here, as perl_run destroys these |
|
|
1186 | */ |
|
|
1187 | |
|
|
1188 | /* |
|
|
1189 | * If perl-run returns we assume exit() was being called or the coro |
|
|
1190 | * fell off the end, which seems to be the only valid (non-bug) |
|
|
1191 | * reason for perl_run to return. We try to exit by jumping to the |
|
|
1192 | * bootstrap-time "top" top_env, as we cannot restore the "main" |
|
|
1193 | * coroutine as Coro has no such concept. |
|
|
1194 | * This actually isn't valid with the pthread backend, but OSes requiring |
|
|
1195 | * that backend are too broken to do it in a standards-compliant way. |
|
|
1196 | */ |
|
|
1197 | PL_top_env = main_top_env; |
|
|
1198 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
|
|
1199 | } |
|
|
1200 | } |
|
|
1201 | |
|
|
1202 | static coro_cctx * |
|
|
1203 | cctx_new () |
|
|
1204 | { |
|
|
1205 | coro_cctx *cctx; |
|
|
1206 | |
|
|
1207 | ++cctx_count; |
|
|
1208 | New (0, cctx, 1, coro_cctx); |
|
|
1209 | |
|
|
1210 | cctx->gen = cctx_gen; |
|
|
1211 | cctx->flags = 0; |
|
|
1212 | cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
|
|
1213 | |
|
|
1214 | return cctx; |
|
|
1215 | } |
|
|
1216 | |
|
|
1217 | /* create a new cctx only suitable as source */ |
|
|
1218 | static coro_cctx * |
|
|
1219 | cctx_new_empty () |
|
|
1220 | { |
|
|
1221 | coro_cctx *cctx = cctx_new (); |
|
|
1222 | |
|
|
1223 | cctx->sptr = 0; |
|
|
1224 | coro_create (&cctx->cctx, 0, 0, 0, 0); |
|
|
1225 | |
|
|
1226 | return cctx; |
|
|
1227 | } |
|
|
1228 | |
|
|
1229 | /* create a new cctx suitable as destination/running a perl interpreter */ |
|
|
1230 | static coro_cctx * |
|
|
1231 | cctx_new_run () |
|
|
1232 | { |
|
|
1233 | coro_cctx *cctx = cctx_new (); |
|
|
1234 | void *stack_start; |
|
|
1235 | size_t stack_size; |
|
|
1236 | |
|
|
1237 | #if HAVE_MMAP |
|
|
1238 | cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
|
|
1239 | /* mmap supposedly does allocate-on-write for us */ |
|
|
1240 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
1241 | |
|
|
1242 | if (cctx->sptr != (void *)-1) |
|
|
1243 | { |
|
|
1244 | #if CORO_STACKGUARD |
|
|
1245 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
1246 | #endif |
|
|
1247 | stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
|
|
1248 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
|
|
1249 | cctx->flags |= CC_MAPPED; |
|
|
1250 | } |
|
|
1251 | else |
|
|
1252 | #endif |
|
|
1253 | { |
|
|
1254 | cctx->ssize = cctx_stacksize * (long)sizeof (long); |
|
|
1255 | New (0, cctx->sptr, cctx_stacksize, long); |
|
|
1256 | |
|
|
1257 | if (!cctx->sptr) |
|
|
1258 | { |
|
|
1259 | perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
|
|
1260 | _exit (EXIT_FAILURE); |
|
|
1261 | } |
|
|
1262 | |
|
|
1263 | stack_start = cctx->sptr; |
|
|
1264 | stack_size = cctx->ssize; |
|
|
1265 | } |
|
|
1266 | |
|
|
1267 | #if CORO_USE_VALGRIND |
|
|
1268 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
|
|
1269 | #endif |
|
|
1270 | |
|
|
1271 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
|
|
1272 | |
|
|
1273 | return cctx; |
|
|
1274 | } |
|
|
1275 | |
|
|
1276 | static void |
|
|
1277 | cctx_destroy (coro_cctx *cctx) |
|
|
1278 | { |
|
|
1279 | if (!cctx) |
|
|
1280 | return; |
|
|
1281 | |
|
|
1282 | assert (cctx != cctx_current);//D temporary |
|
|
1283 | |
|
|
1284 | --cctx_count; |
|
|
1285 | coro_destroy (&cctx->cctx); |
|
|
1286 | |
|
|
1287 | /* coro_transfer creates new, empty cctx's */ |
|
|
1288 | if (cctx->sptr) |
|
|
1289 | { |
|
|
1290 | #if CORO_USE_VALGRIND |
|
|
1291 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
1292 | #endif |
|
|
1293 | |
|
|
1294 | #if HAVE_MMAP |
|
|
1295 | if (cctx->flags & CC_MAPPED) |
|
|
1296 | munmap (cctx->sptr, cctx->ssize); |
|
|
1297 | else |
|
|
1298 | #endif |
|
|
1299 | Safefree (cctx->sptr); |
|
|
1300 | } |
|
|
1301 | |
|
|
1302 | Safefree (cctx); |
|
|
1303 | } |
|
|
1304 | |
|
|
1305 | /* wether this cctx should be destructed */ |
|
|
1306 | #define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
|
|
1307 | |
|
|
1308 | static coro_cctx * |
|
|
1309 | cctx_get (pTHX) |
|
|
1310 | { |
|
|
1311 | while (expect_true (cctx_first)) |
|
|
1312 | { |
|
|
1313 | coro_cctx *cctx = cctx_first; |
|
|
1314 | cctx_first = cctx->next; |
|
|
1315 | --cctx_idle; |
|
|
1316 | |
|
|
1317 | if (expect_true (!CCTX_EXPIRED (cctx))) |
|
|
1318 | return cctx; |
|
|
1319 | |
|
|
1320 | cctx_destroy (cctx); |
|
|
1321 | } |
|
|
1322 | |
|
|
1323 | return cctx_new_run (); |
|
|
1324 | } |
|
|
1325 | |
|
|
1326 | static void |
|
|
1327 | cctx_put (coro_cctx *cctx) |
|
|
1328 | { |
|
|
1329 | assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
|
|
1330 | |
|
|
1331 | /* free another cctx if overlimit */ |
|
|
1332 | if (expect_false (cctx_idle >= cctx_max_idle)) |
|
|
1333 | { |
|
|
1334 | coro_cctx *first = cctx_first; |
|
|
1335 | cctx_first = first->next; |
|
|
1336 | --cctx_idle; |
|
|
1337 | |
|
|
1338 | cctx_destroy (first); |
|
|
1339 | } |
|
|
1340 | |
|
|
1341 | ++cctx_idle; |
|
|
1342 | cctx->next = cctx_first; |
|
|
1343 | cctx_first = cctx; |
|
|
1344 | } |
|
|
1345 | |
|
|
1346 | /** coroutine switching *****************************************************/ |
|
|
1347 | |
|
|
1348 | static void |
|
|
1349 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
|
|
1350 | { |
|
|
1351 | /* TODO: throwing up here is considered harmful */ |
|
|
1352 | |
|
|
1353 | if (expect_true (prev != next)) |
|
|
1354 | { |
|
|
1355 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
|
|
1356 | croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,"); |
|
|
1357 | |
|
|
1358 | if (expect_false (next->flags & CF_RUNNING)) |
|
|
1359 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); |
|
|
1360 | |
|
|
1361 | if (expect_false (next->flags & CF_DESTROYED)) |
|
|
1362 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); |
|
|
1363 | |
|
|
1364 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
1365 | if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
|
|
1366 | croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); |
|
|
1367 | #endif |
|
|
1368 | } |
|
|
1369 | } |
|
|
1370 | |
|
|
1371 | /* always use the TRANSFER macro */ |
|
|
1372 | static void NOINLINE /* noinline so we have a fixed stackframe */ |
|
|
1373 | transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
|
|
1374 | { |
|
|
1375 | dSTACKLEVEL; |
|
|
1376 | |
|
|
1377 | /* sometimes transfer is only called to set idle_sp */ |
|
|
1378 | if (expect_false (!prev)) |
|
|
1379 | { |
|
|
1380 | cctx_current->idle_sp = STACKLEVEL; |
|
|
1381 | assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
1382 | } |
|
|
1383 | else if (expect_true (prev != next)) |
|
|
1384 | { |
|
|
1385 | coro_cctx *cctx_prev; |
|
|
1386 | |
|
|
1387 | if (expect_false (prev->flags & CF_NEW)) |
|
|
1388 | { |
|
|
1389 | /* create a new empty/source context */ |
|
|
1390 | prev->flags &= ~CF_NEW; |
|
|
1391 | prev->flags |= CF_RUNNING; |
|
|
1392 | } |
|
|
1393 | |
|
|
1394 | prev->flags &= ~CF_RUNNING; |
|
|
1395 | next->flags |= CF_RUNNING; |
|
|
1396 | |
|
|
1397 | /* first get rid of the old state */ |
|
|
1398 | save_perl (aTHX_ prev); |
|
|
1399 | |
|
|
1400 | if (expect_false (next->flags & CF_NEW)) |
|
|
1401 | { |
|
|
1402 | /* need to start coroutine */ |
|
|
1403 | next->flags &= ~CF_NEW; |
|
|
1404 | /* setup coroutine call */ |
|
|
1405 | coro_setup (aTHX_ next); |
|
|
1406 | } |
|
|
1407 | else |
|
|
1408 | load_perl (aTHX_ next); |
|
|
1409 | |
|
|
1410 | assert (!prev->cctx);//D temporary |
|
|
1411 | |
|
|
1412 | /* possibly untie and reuse the cctx */ |
|
|
1413 | if (expect_true ( |
|
|
1414 | cctx_current->idle_sp == STACKLEVEL |
|
|
1415 | && !(cctx_current->flags & CC_TRACE) |
|
|
1416 | && !force_cctx |
|
|
1417 | )) |
|
|
1418 | { |
|
|
1419 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
|
|
1420 | assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); |
|
|
1421 | |
|
|
1422 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ |
|
|
1423 | /* without this the next cctx_get might destroy the running cctx while still in use */ |
|
|
1424 | if (expect_false (CCTX_EXPIRED (cctx_current))) |
|
|
1425 | if (expect_true (!next->cctx)) |
|
|
1426 | next->cctx = cctx_get (aTHX); |
|
|
1427 | |
|
|
1428 | cctx_put (cctx_current); |
|
|
1429 | } |
|
|
1430 | else |
|
|
1431 | prev->cctx = cctx_current; |
|
|
1432 | |
|
|
1433 | ++next->usecount; |
|
|
1434 | |
|
|
1435 | cctx_prev = cctx_current; |
|
|
1436 | cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); |
|
|
1437 | |
|
|
1438 | next->cctx = 0; |
|
|
1439 | |
|
|
1440 | if (expect_false (cctx_prev != cctx_current)) |
|
|
1441 | { |
|
|
1442 | cctx_prev->top_env = PL_top_env; |
|
|
1443 | PL_top_env = cctx_current->top_env; |
|
|
1444 | coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); |
|
|
1445 | } |
|
|
1446 | |
|
|
1447 | transfer_tail (aTHX); |
|
|
1448 | } |
|
|
1449 | } |
|
|
1450 | |
|
|
1451 | #define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
|
|
1452 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
|
|
1453 | |
|
|
1454 | /** high level stuff ********************************************************/ |
|
|
1455 | |
|
|
1456 | static int |
|
|
1457 | coro_state_destroy (pTHX_ struct coro *coro) |
|
|
1458 | { |
|
|
1459 | if (coro->flags & CF_DESTROYED) |
|
|
1460 | return 0; |
|
|
1461 | |
|
|
1462 | if (coro->on_destroy) |
|
|
1463 | coro->on_destroy (aTHX_ coro); |
|
|
1464 | |
|
|
1465 | coro->flags |= CF_DESTROYED; |
|
|
1466 | |
|
|
1467 | if (coro->flags & CF_READY) |
|
|
1468 | { |
|
|
1469 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
1470 | /* alternative: look through all ready queues and remove the coro */ |
|
|
1471 | --coro_nready; |
|
|
1472 | } |
|
|
1473 | else |
|
|
1474 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
|
|
1475 | |
|
|
1476 | if (coro->mainstack |
|
|
1477 | && coro->mainstack != main_mainstack |
|
|
1478 | && !PL_dirty) |
|
|
1479 | { |
|
|
1480 | struct coro temp; |
|
|
1481 | |
|
|
1482 | assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); |
|
|
1483 | |
|
|
1484 | save_perl (aTHX_ &temp); |
|
|
1485 | load_perl (aTHX_ coro); |
|
|
1486 | |
|
|
1487 | coro_destruct_perl (aTHX_ coro); |
|
|
1488 | |
|
|
1489 | load_perl (aTHX_ &temp); |
|
|
1490 | |
|
|
1491 | coro->slot = 0; |
|
|
1492 | } |
|
|
1493 | |
|
|
1494 | cctx_destroy (coro->cctx); |
|
|
1495 | SvREFCNT_dec (coro->startcv); |
|
|
1496 | SvREFCNT_dec (coro->args); |
|
|
1497 | SvREFCNT_dec (CORO_THROW); |
|
|
1498 | |
|
|
1499 | if (coro->next) coro->next->prev = coro->prev; |
|
|
1500 | if (coro->prev) coro->prev->next = coro->next; |
|
|
1501 | if (coro == coro_first) coro_first = coro->next; |
|
|
1502 | |
|
|
1503 | return 1; |
|
|
1504 | } |
|
|
1505 | |
|
|
1506 | static int |
|
|
1507 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
1508 | { |
|
|
1509 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1510 | mg->mg_ptr = 0; |
|
|
1511 | |
|
|
1512 | coro->hv = 0; |
|
|
1513 | |
|
|
1514 | if (--coro->refcnt < 0) |
|
|
1515 | { |
|
|
1516 | coro_state_destroy (aTHX_ coro); |
|
|
1517 | Safefree (coro); |
|
|
1518 | } |
|
|
1519 | |
|
|
1520 | return 0; |
|
|
1521 | } |
|
|
1522 | |
|
|
1523 | static int |
|
|
1524 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
1525 | { |
|
|
1526 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1527 | |
|
|
1528 | ++coro->refcnt; |
|
|
1529 | |
|
|
1530 | return 0; |
|
|
1531 | } |
|
|
1532 | |
|
|
1533 | static MGVTBL coro_state_vtbl = { |
|
|
1534 | 0, 0, 0, 0, |
|
|
1535 | coro_state_free, |
|
|
1536 | 0, |
|
|
1537 | #ifdef MGf_DUP |
|
|
1538 | coro_state_dup, |
|
|
1539 | #else |
|
|
1540 | # define MGf_DUP 0 |
|
|
1541 | #endif |
|
|
1542 | }; |
|
|
1543 | |
|
|
1544 | static void |
|
|
1545 | prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
|
|
1546 | { |
|
|
1547 | ta->prev = SvSTATE (prev_sv); |
|
|
1548 | ta->next = SvSTATE (next_sv); |
|
|
1549 | TRANSFER_CHECK (*ta); |
|
|
1550 | } |
|
|
1551 | |
|
|
1552 | static void |
|
|
1553 | api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
|
|
1554 | { |
|
|
1555 | struct coro_transfer_args ta; |
|
|
1556 | |
|
|
1557 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
|
|
1558 | TRANSFER (ta, 1); |
|
|
1559 | } |
|
|
1560 | |
|
|
1561 | /*****************************************************************************/ |
|
|
1562 | /* gensub: simple closure generation utility */ |
|
|
1563 | |
|
|
1564 | #define GENSUB_ARG CvXSUBANY (cv).any_ptr |
|
|
1565 | |
|
|
1566 | /* create a closure from XS, returns a code reference */ |
|
|
1567 | /* the arg can be accessed via GENSUB_ARG from the callback */ |
|
|
1568 | /* the callback must use dXSARGS/XSRETURN */ |
|
|
1569 | static SV * |
|
|
1570 | gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
|
|
1571 | { |
|
|
1572 | CV *cv = (CV *)newSV (0); |
|
|
1573 | |
|
|
1574 | sv_upgrade ((SV *)cv, SVt_PVCV); |
|
|
1575 | |
|
|
1576 | CvANON_on (cv); |
|
|
1577 | CvISXSUB_on (cv); |
|
|
1578 | CvXSUB (cv) = xsub; |
|
|
1579 | GENSUB_ARG = arg; |
|
|
1580 | |
|
|
1581 | return newRV_noinc ((SV *)cv); |
|
|
1582 | } |
|
|
1583 | |
|
|
1584 | /** Coro ********************************************************************/ |
|
|
1585 | |
|
|
1586 | INLINE void |
|
|
1587 | coro_enq (pTHX_ struct coro *coro) |
|
|
1588 | { |
|
|
1589 | av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); |
|
|
1590 | } |
|
|
1591 | |
|
|
1592 | INLINE SV * |
|
|
1593 | coro_deq (pTHX) |
|
|
1594 | { |
|
|
1595 | int prio; |
|
|
1596 | |
|
|
1597 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) |
|
|
1598 | if (AvFILLp (coro_ready [prio]) >= 0) |
|
|
1599 | return av_shift (coro_ready [prio]); |
|
|
1600 | |
|
|
1601 | return 0; |
|
|
1602 | } |
|
|
1603 | |
|
|
1604 | static int |
|
|
1605 | api_ready (pTHX_ SV *coro_sv) |
|
|
1606 | { |
|
|
1607 | struct coro *coro; |
|
|
1608 | SV *sv_hook; |
|
|
1609 | void (*xs_hook)(void); |
|
|
1610 | |
|
|
1611 | coro = SvSTATE (coro_sv); |
|
|
1612 | |
|
|
1613 | if (coro->flags & CF_READY) |
|
|
1614 | return 0; |
|
|
1615 | |
|
|
1616 | coro->flags |= CF_READY; |
|
|
1617 | |
|
|
1618 | sv_hook = coro_nready ? 0 : coro_readyhook; |
|
|
1619 | xs_hook = coro_nready ? 0 : coroapi.readyhook; |
|
|
1620 | |
|
|
1621 | coro_enq (aTHX_ coro); |
|
|
1622 | ++coro_nready; |
|
|
1623 | |
|
|
1624 | if (sv_hook) |
|
|
1625 | { |
|
|
1626 | dSP; |
|
|
1627 | |
|
|
1628 | ENTER; |
|
|
1629 | SAVETMPS; |
|
|
1630 | |
|
|
1631 | PUSHMARK (SP); |
|
|
1632 | PUTBACK; |
|
|
1633 | call_sv (sv_hook, G_VOID | G_DISCARD); |
|
|
1634 | |
|
|
1635 | FREETMPS; |
|
|
1636 | LEAVE; |
|
|
1637 | } |
|
|
1638 | |
|
|
1639 | if (xs_hook) |
|
|
1640 | xs_hook (); |
|
|
1641 | |
|
|
1642 | return 1; |
|
|
1643 | } |
|
|
1644 | |
|
|
1645 | static int |
|
|
1646 | api_is_ready (pTHX_ SV *coro_sv) |
|
|
1647 | { |
|
|
1648 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
|
|
1649 | } |
|
|
1650 | |
|
|
1651 | /* expects to own a reference to next->hv */ |
|
|
1652 | INLINE void |
|
|
1653 | prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) |
|
|
1654 | { |
|
|
1655 | SV *prev_sv = SvRV (coro_current); |
|
|
1656 | |
|
|
1657 | ta->prev = SvSTATE_hv (prev_sv); |
|
|
1658 | ta->next = next; |
|
|
1659 | |
|
|
1660 | TRANSFER_CHECK (*ta); |
|
|
1661 | |
|
|
1662 | SvRV_set (coro_current, (SV *)next->hv); |
|
|
1663 | |
|
|
1664 | free_coro_mortal (aTHX); |
|
|
1665 | coro_mortal = prev_sv; |
|
|
1666 | } |
|
|
1667 | |
|
|
1668 | static void |
903 | prepare_schedule (aTHX_ struct transfer_args *ta) |
1669 | prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
904 | { |
1670 | { |
905 | SV *current, *prev, *next; |
|
|
906 | |
|
|
907 | LOCK; |
|
|
908 | |
|
|
909 | current = GvSV (coro_current); |
|
|
910 | |
|
|
911 | for (;;) |
1671 | for (;;) |
912 | { |
1672 | { |
913 | LOCK; |
|
|
914 | |
|
|
915 | next = coro_deq (aTHX_ PRIO_MIN); |
1673 | SV *next_sv = coro_deq (aTHX); |
916 | |
1674 | |
917 | if (next) |
1675 | if (expect_true (next_sv)) |
|
|
1676 | { |
|
|
1677 | struct coro *next = SvSTATE_hv (next_sv); |
|
|
1678 | |
|
|
1679 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1680 | if (expect_false (next->flags & CF_DESTROYED)) |
|
|
1681 | SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */ |
|
|
1682 | else |
|
|
1683 | { |
|
|
1684 | next->flags &= ~CF_READY; |
|
|
1685 | --coro_nready; |
|
|
1686 | |
|
|
1687 | prepare_schedule_to (aTHX_ ta, next); |
918 | break; |
1688 | break; |
|
|
1689 | } |
|
|
1690 | } |
|
|
1691 | else |
|
|
1692 | { |
|
|
1693 | /* nothing to schedule: call the idle handler */ |
|
|
1694 | if (SvROK (sv_idle) |
|
|
1695 | && SvOBJECT (SvRV (sv_idle))) |
|
|
1696 | { |
|
|
1697 | ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ |
|
|
1698 | api_ready (aTHX_ SvRV (sv_idle)); |
|
|
1699 | --coro_nready; |
|
|
1700 | } |
|
|
1701 | else |
|
|
1702 | { |
|
|
1703 | dSP; |
919 | |
1704 | |
920 | UNLOCK; |
1705 | ENTER; |
|
|
1706 | SAVETMPS; |
|
|
1707 | |
|
|
1708 | PUSHMARK (SP); |
|
|
1709 | PUTBACK; |
|
|
1710 | call_sv (sv_idle, G_VOID | G_DISCARD); |
|
|
1711 | |
|
|
1712 | FREETMPS; |
|
|
1713 | LEAVE; |
|
|
1714 | } |
|
|
1715 | } |
|
|
1716 | } |
|
|
1717 | } |
|
|
1718 | |
|
|
1719 | INLINE void |
|
|
1720 | prepare_cede (pTHX_ struct coro_transfer_args *ta) |
|
|
1721 | { |
|
|
1722 | api_ready (aTHX_ coro_current); |
|
|
1723 | prepare_schedule (aTHX_ ta); |
|
|
1724 | } |
|
|
1725 | |
|
|
1726 | INLINE void |
|
|
1727 | prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
|
|
1728 | { |
|
|
1729 | SV *prev = SvRV (coro_current); |
|
|
1730 | |
|
|
1731 | if (coro_nready) |
|
|
1732 | { |
|
|
1733 | prepare_schedule (aTHX_ ta); |
|
|
1734 | api_ready (aTHX_ prev); |
|
|
1735 | } |
|
|
1736 | else |
|
|
1737 | prepare_nop (aTHX_ ta); |
|
|
1738 | } |
|
|
1739 | |
|
|
1740 | static void |
|
|
1741 | api_schedule (pTHX) |
|
|
1742 | { |
|
|
1743 | struct coro_transfer_args ta; |
|
|
1744 | |
|
|
1745 | prepare_schedule (aTHX_ &ta); |
|
|
1746 | TRANSFER (ta, 1); |
|
|
1747 | } |
|
|
1748 | |
|
|
1749 | static void |
|
|
1750 | api_schedule_to (pTHX_ SV *coro_sv) |
|
|
1751 | { |
|
|
1752 | struct coro_transfer_args ta; |
|
|
1753 | struct coro *next = SvSTATE (coro_sv); |
|
|
1754 | |
|
|
1755 | SvREFCNT_inc_NN (coro_sv); |
|
|
1756 | prepare_schedule_to (aTHX_ &ta, next); |
|
|
1757 | } |
|
|
1758 | |
|
|
1759 | static int |
|
|
1760 | api_cede (pTHX) |
|
|
1761 | { |
|
|
1762 | struct coro_transfer_args ta; |
|
|
1763 | |
|
|
1764 | prepare_cede (aTHX_ &ta); |
|
|
1765 | |
|
|
1766 | if (expect_true (ta.prev != ta.next)) |
|
|
1767 | { |
|
|
1768 | TRANSFER (ta, 1); |
|
|
1769 | return 1; |
|
|
1770 | } |
|
|
1771 | else |
|
|
1772 | return 0; |
|
|
1773 | } |
|
|
1774 | |
|
|
1775 | static int |
|
|
1776 | api_cede_notself (pTHX) |
|
|
1777 | { |
|
|
1778 | if (coro_nready) |
|
|
1779 | { |
|
|
1780 | struct coro_transfer_args ta; |
|
|
1781 | |
|
|
1782 | prepare_cede_notself (aTHX_ &ta); |
|
|
1783 | TRANSFER (ta, 1); |
|
|
1784 | return 1; |
|
|
1785 | } |
|
|
1786 | else |
|
|
1787 | return 0; |
|
|
1788 | } |
|
|
1789 | |
|
|
1790 | static void |
|
|
1791 | api_trace (pTHX_ SV *coro_sv, int flags) |
|
|
1792 | { |
|
|
1793 | struct coro *coro = SvSTATE (coro_sv); |
|
|
1794 | |
|
|
1795 | if (coro->flags & CF_RUNNING) |
|
|
1796 | croak ("cannot enable tracing on a running coroutine, caught"); |
|
|
1797 | |
|
|
1798 | if (flags & CC_TRACE) |
|
|
1799 | { |
|
|
1800 | if (!coro->cctx) |
|
|
1801 | coro->cctx = cctx_new_run (); |
|
|
1802 | else if (!(coro->cctx->flags & CC_TRACE)) |
|
|
1803 | croak ("cannot enable tracing on coroutine with custom stack, caught"); |
|
|
1804 | |
|
|
1805 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
|
|
1806 | } |
|
|
1807 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
|
|
1808 | { |
|
|
1809 | coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
|
|
1810 | |
|
|
1811 | if (coro->flags & CF_RUNNING) |
|
|
1812 | PL_runops = RUNOPS_DEFAULT; |
|
|
1813 | else |
|
|
1814 | coro->slot->runops = RUNOPS_DEFAULT; |
|
|
1815 | } |
|
|
1816 | } |
|
|
1817 | |
|
|
1818 | static void |
|
|
1819 | coro_call_on_destroy (pTHX_ struct coro *coro) |
|
|
1820 | { |
|
|
1821 | SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); |
|
|
1822 | SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0); |
|
|
1823 | |
|
|
1824 | if (on_destroyp) |
|
|
1825 | { |
|
|
1826 | AV *on_destroy = (AV *)SvRV (*on_destroyp); |
|
|
1827 | |
|
|
1828 | while (AvFILLp (on_destroy) >= 0) |
|
|
1829 | { |
|
|
1830 | dSP; /* don't disturb outer sp */ |
|
|
1831 | SV *cb = av_pop (on_destroy); |
|
|
1832 | |
|
|
1833 | PUSHMARK (SP); |
|
|
1834 | |
|
|
1835 | if (statusp) |
|
|
1836 | { |
|
|
1837 | int i; |
|
|
1838 | AV *status = (AV *)SvRV (*statusp); |
|
|
1839 | EXTEND (SP, AvFILLp (status) + 1); |
|
|
1840 | |
|
|
1841 | for (i = 0; i <= AvFILLp (status); ++i) |
|
|
1842 | PUSHs (AvARRAY (status)[i]); |
|
|
1843 | } |
|
|
1844 | |
|
|
1845 | PUTBACK; |
|
|
1846 | call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); |
|
|
1847 | } |
|
|
1848 | } |
|
|
1849 | } |
|
|
1850 | |
|
|
1851 | static void |
|
|
1852 | slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1853 | { |
|
|
1854 | int i; |
|
|
1855 | HV *hv = (HV *)SvRV (coro_current); |
|
|
1856 | AV *av = newAV (); |
|
|
1857 | |
|
|
1858 | av_extend (av, items - 1); |
|
|
1859 | for (i = 0; i < items; ++i) |
|
|
1860 | av_push (av, SvREFCNT_inc_NN (arg [i])); |
|
|
1861 | |
|
|
1862 | hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); |
|
|
1863 | |
|
|
1864 | av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */ |
|
|
1865 | api_ready (aTHX_ sv_manager); |
|
|
1866 | |
|
|
1867 | frame->prepare = prepare_schedule; |
|
|
1868 | frame->check = slf_check_repeat; |
|
|
1869 | } |
|
|
1870 | |
|
|
1871 | /*****************************************************************************/ |
|
|
1872 | /* async pool handler */ |
|
|
1873 | |
|
|
1874 | static int |
|
|
1875 | slf_check_pool_handler (pTHX_ struct CoroSLF *frame) |
|
|
1876 | { |
|
|
1877 | HV *hv = (HV *)SvRV (coro_current); |
|
|
1878 | struct coro *coro = (struct coro *)frame->data; |
|
|
1879 | |
|
|
1880 | if (!coro->invoke_cb) |
|
|
1881 | return 1; /* loop till we have invoke */ |
|
|
1882 | else |
|
|
1883 | { |
|
|
1884 | hv_store (hv, "desc", sizeof ("desc") - 1, |
|
|
1885 | newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
|
|
1886 | |
|
|
1887 | coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
921 | |
1888 | |
922 | { |
1889 | { |
923 | dSP; |
1890 | dSP; |
924 | |
1891 | XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0; |
925 | ENTER; |
|
|
926 | SAVETMPS; |
|
|
927 | |
|
|
928 | PUSHMARK (SP); |
|
|
929 | PUTBACK; |
1892 | PUTBACK; |
930 | call_sv (GvSV (coro_idle), G_DISCARD); |
|
|
931 | |
|
|
932 | FREETMPS; |
|
|
933 | LEAVE; |
|
|
934 | } |
1893 | } |
|
|
1894 | |
|
|
1895 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
1896 | GvAV (PL_defgv) = coro->invoke_av; |
|
|
1897 | coro->invoke_av = 0; |
|
|
1898 | |
|
|
1899 | return 0; |
|
|
1900 | } |
|
|
1901 | } |
|
|
1902 | |
|
|
1903 | static void |
|
|
1904 | slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1905 | { |
|
|
1906 | HV *hv = (HV *)SvRV (coro_current); |
|
|
1907 | struct coro *coro = SvSTATE_hv ((SV *)hv); |
|
|
1908 | |
|
|
1909 | if (expect_true (coro->saved_deffh)) |
935 | } |
1910 | { |
|
|
1911 | /* subsequent iteration */ |
|
|
1912 | SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
|
|
1913 | coro->saved_deffh = 0; |
936 | |
1914 | |
937 | prev = SvRV (current); |
1915 | if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
938 | SvRV (current) = next; |
1916 | || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
|
|
1917 | { |
|
|
1918 | coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); |
|
|
1919 | coro->invoke_av = newAV (); |
939 | |
1920 | |
940 | /* free this only after the transfer */ |
1921 | frame->prepare = prepare_nop; |
941 | free_coro_mortal (); |
1922 | } |
942 | coro_mortal = prev; |
1923 | else |
|
|
1924 | { |
|
|
1925 | av_clear (GvAV (PL_defgv)); |
|
|
1926 | hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); |
943 | |
1927 | |
944 | ta->prev = SvSTATE (prev); |
1928 | coro->prio = 0; |
945 | ta->next = SvSTATE (next); |
|
|
946 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
947 | |
1929 | |
948 | UNLOCK; |
1930 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
949 | } |
1931 | api_trace (aTHX_ coro_current, 0); |
950 | |
1932 | |
|
|
1933 | frame->prepare = prepare_schedule; |
|
|
1934 | av_push (av_async_pool, SvREFCNT_inc (hv)); |
|
|
1935 | } |
|
|
1936 | } |
|
|
1937 | else |
|
|
1938 | { |
|
|
1939 | /* first iteration, simply fall through */ |
|
|
1940 | frame->prepare = prepare_nop; |
|
|
1941 | } |
|
|
1942 | |
|
|
1943 | frame->check = slf_check_pool_handler; |
|
|
1944 | frame->data = (void *)coro; |
|
|
1945 | } |
|
|
1946 | |
|
|
1947 | /*****************************************************************************/ |
|
|
1948 | /* rouse callback */ |
|
|
1949 | |
|
|
1950 | #define CORO_MAGIC_type_rouse PERL_MAGIC_ext |
|
|
1951 | |
|
|
1952 | static void |
|
|
1953 | coro_rouse_callback (pTHX_ CV *cv) |
|
|
1954 | { |
|
|
1955 | dXSARGS; |
|
|
1956 | SV *data = (SV *)GENSUB_ARG; |
|
|
1957 | |
|
|
1958 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
1959 | { |
|
|
1960 | /* first call, set args */ |
|
|
1961 | AV *av = newAV (); |
|
|
1962 | SV *coro = SvRV (data); |
|
|
1963 | |
|
|
1964 | SvRV_set (data, (SV *)av); |
|
|
1965 | api_ready (aTHX_ coro); |
|
|
1966 | SvREFCNT_dec (coro); |
|
|
1967 | |
|
|
1968 | /* better take a full copy of the arguments */ |
|
|
1969 | while (items--) |
|
|
1970 | av_store (av, items, newSVsv (ST (items))); |
|
|
1971 | } |
|
|
1972 | |
|
|
1973 | XSRETURN_EMPTY; |
|
|
1974 | } |
|
|
1975 | |
951 | static void |
1976 | static int |
|
|
1977 | slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) |
|
|
1978 | { |
|
|
1979 | SV *data = (SV *)frame->data; |
|
|
1980 | |
|
|
1981 | if (CORO_THROW) |
|
|
1982 | return 0; |
|
|
1983 | |
|
|
1984 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
1985 | return 1; |
|
|
1986 | |
|
|
1987 | /* now push all results on the stack */ |
|
|
1988 | { |
|
|
1989 | dSP; |
|
|
1990 | AV *av = (AV *)SvRV (data); |
|
|
1991 | int i; |
|
|
1992 | |
|
|
1993 | EXTEND (SP, AvFILLp (av) + 1); |
|
|
1994 | for (i = 0; i <= AvFILLp (av); ++i) |
|
|
1995 | PUSHs (sv_2mortal (AvARRAY (av)[i])); |
|
|
1996 | |
|
|
1997 | /* we have stolen the elements, so ste length to zero and free */ |
|
|
1998 | AvFILLp (av) = -1; |
|
|
1999 | av_undef (av); |
|
|
2000 | |
|
|
2001 | PUTBACK; |
|
|
2002 | } |
|
|
2003 | |
|
|
2004 | return 0; |
|
|
2005 | } |
|
|
2006 | |
|
|
2007 | static void |
|
|
2008 | slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2009 | { |
|
|
2010 | SV *cb; |
|
|
2011 | |
|
|
2012 | if (items) |
|
|
2013 | cb = arg [0]; |
|
|
2014 | else |
|
|
2015 | { |
|
|
2016 | struct coro *coro = SvSTATE_current; |
|
|
2017 | |
|
|
2018 | if (!coro->rouse_cb) |
|
|
2019 | croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,"); |
|
|
2020 | |
|
|
2021 | cb = sv_2mortal (coro->rouse_cb); |
|
|
2022 | coro->rouse_cb = 0; |
|
|
2023 | } |
|
|
2024 | |
|
|
2025 | if (!SvROK (cb) |
|
|
2026 | || SvTYPE (SvRV (cb)) != SVt_PVCV |
|
|
2027 | || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) |
|
|
2028 | croak ("Coro::rouse_wait called with illegal callback argument,"); |
|
|
2029 | |
|
|
2030 | { |
|
|
2031 | CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ |
|
|
2032 | SV *data = (SV *)GENSUB_ARG; |
|
|
2033 | |
|
|
2034 | frame->data = (void *)data; |
|
|
2035 | frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; |
|
|
2036 | frame->check = slf_check_rouse_wait; |
|
|
2037 | } |
|
|
2038 | } |
|
|
2039 | |
|
|
2040 | static SV * |
|
|
2041 | coro_new_rouse_cb (pTHX) |
|
|
2042 | { |
|
|
2043 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2044 | struct coro *coro = SvSTATE_hv (hv); |
|
|
2045 | SV *data = newRV_inc ((SV *)hv); |
|
|
2046 | SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); |
|
|
2047 | |
|
|
2048 | sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); |
|
|
2049 | SvREFCNT_dec (data); /* magicext increases the refcount */ |
|
|
2050 | |
|
|
2051 | SvREFCNT_dec (coro->rouse_cb); |
|
|
2052 | coro->rouse_cb = SvREFCNT_inc_NN (cb); |
|
|
2053 | |
|
|
2054 | return cb; |
|
|
2055 | } |
|
|
2056 | |
|
|
2057 | /*****************************************************************************/ |
|
|
2058 | /* schedule-like-function opcode (SLF) */ |
|
|
2059 | |
|
|
2060 | static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
|
|
2061 | static const CV *slf_cv; |
|
|
2062 | static SV **slf_argv; |
|
|
2063 | static int slf_argc, slf_arga; /* count, allocated */ |
|
|
2064 | static I32 slf_ax; /* top of stack, for restore */ |
|
|
2065 | |
|
|
2066 | /* this restores the stack in the case we patched the entersub, to */ |
|
|
2067 | /* recreate the stack frame as perl will on following calls */ |
|
|
2068 | /* since entersub cleared the stack */ |
|
|
2069 | static OP * |
|
|
2070 | pp_restore (pTHX) |
|
|
2071 | { |
|
|
2072 | int i; |
|
|
2073 | SV **SP = PL_stack_base + slf_ax; |
|
|
2074 | |
|
|
2075 | PUSHMARK (SP); |
|
|
2076 | |
|
|
2077 | EXTEND (SP, slf_argc + 1); |
|
|
2078 | |
|
|
2079 | for (i = 0; i < slf_argc; ++i) |
|
|
2080 | PUSHs (sv_2mortal (slf_argv [i])); |
|
|
2081 | |
|
|
2082 | PUSHs ((SV *)CvGV (slf_cv)); |
|
|
2083 | |
|
|
2084 | RETURNOP (slf_restore.op_first); |
|
|
2085 | } |
|
|
2086 | |
|
|
2087 | static void |
|
|
2088 | slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
|
|
2089 | { |
|
|
2090 | SV **arg = (SV **)slf_frame.data; |
|
|
2091 | |
|
|
2092 | prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
|
|
2093 | } |
|
|
2094 | |
|
|
2095 | static void |
|
|
2096 | slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2097 | { |
|
|
2098 | if (items != 2) |
|
|
2099 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
|
|
2100 | |
|
|
2101 | frame->prepare = slf_prepare_transfer; |
|
|
2102 | frame->check = slf_check_nop; |
|
|
2103 | frame->data = (void *)arg; /* let's hope it will stay valid */ |
|
|
2104 | } |
|
|
2105 | |
|
|
2106 | static void |
|
|
2107 | slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2108 | { |
|
|
2109 | frame->prepare = prepare_schedule; |
|
|
2110 | frame->check = slf_check_nop; |
|
|
2111 | } |
|
|
2112 | |
|
|
2113 | static void |
952 | prepare_cede (aTHX_ struct transfer_args *ta) |
2114 | slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta) |
953 | { |
2115 | { |
954 | LOCK; |
2116 | struct coro *next = (struct coro *)slf_frame.data; |
955 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
956 | UNLOCK; |
|
|
957 | |
2117 | |
|
|
2118 | SvREFCNT_inc_NN (next->hv); |
958 | prepare_schedule (ta); |
2119 | prepare_schedule_to (aTHX_ ta, next); |
959 | } |
2120 | } |
960 | |
2121 | |
961 | static void |
2122 | static void |
962 | api_schedule (void) |
2123 | slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
963 | { |
2124 | { |
964 | dTHX; |
2125 | if (!items) |
|
|
2126 | croak ("Coro::schedule_to expects a coroutine argument, caught"); |
|
|
2127 | |
|
|
2128 | frame->data = (void *)SvSTATE (arg [0]); |
|
|
2129 | frame->prepare = slf_prepare_schedule_to; |
|
|
2130 | frame->check = slf_check_nop; |
|
|
2131 | } |
|
|
2132 | |
|
|
2133 | static void |
|
|
2134 | slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2135 | { |
|
|
2136 | api_ready (aTHX_ SvRV (coro_current)); |
|
|
2137 | |
|
|
2138 | slf_init_schedule_to (aTHX_ frame, cv, arg, items); |
|
|
2139 | } |
|
|
2140 | |
|
|
2141 | static void |
|
|
2142 | slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2143 | { |
|
|
2144 | frame->prepare = prepare_cede; |
|
|
2145 | frame->check = slf_check_nop; |
|
|
2146 | } |
|
|
2147 | |
|
|
2148 | static void |
|
|
2149 | slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2150 | { |
|
|
2151 | frame->prepare = prepare_cede_notself; |
|
|
2152 | frame->check = slf_check_nop; |
|
|
2153 | } |
|
|
2154 | |
|
|
2155 | /* |
|
|
2156 | * these not obviously related functions are all rolled into one |
|
|
2157 | * function to increase chances that they all will call transfer with the same |
|
|
2158 | * stack offset |
|
|
2159 | * SLF stands for "schedule-like-function". |
|
|
2160 | */ |
|
|
2161 | static OP * |
|
|
2162 | pp_slf (pTHX) |
|
|
2163 | { |
|
|
2164 | I32 checkmark; /* mark SP to see how many elements check has pushed */ |
|
|
2165 | |
|
|
2166 | /* set up the slf frame, unless it has already been set-up */ |
|
|
2167 | /* the latter happens when a new coro has been started */ |
|
|
2168 | /* or when a new cctx was attached to an existing coroutine */ |
|
|
2169 | if (expect_true (!slf_frame.prepare)) |
|
|
2170 | { |
|
|
2171 | /* first iteration */ |
|
|
2172 | dSP; |
|
|
2173 | SV **arg = PL_stack_base + TOPMARK + 1; |
|
|
2174 | int items = SP - arg; /* args without function object */ |
|
|
2175 | SV *gv = *sp; |
|
|
2176 | |
|
|
2177 | /* do a quick consistency check on the "function" object, and if it isn't */ |
|
|
2178 | /* for us, divert to the real entersub */ |
|
|
2179 | if (SvTYPE (gv) != SVt_PVGV |
|
|
2180 | || !GvCV (gv) |
|
|
2181 | || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
|
|
2182 | return PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
2183 | |
|
|
2184 | if (!(PL_op->op_flags & OPf_STACKED)) |
|
|
2185 | { |
|
|
2186 | /* ampersand-form of call, use @_ instead of stack */ |
|
|
2187 | AV *av = GvAV (PL_defgv); |
|
|
2188 | arg = AvARRAY (av); |
|
|
2189 | items = AvFILLp (av) + 1; |
|
|
2190 | } |
|
|
2191 | |
|
|
2192 | /* now call the init function, which needs to set up slf_frame */ |
|
|
2193 | ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
|
|
2194 | (aTHX_ &slf_frame, GvCV (gv), arg, items); |
|
|
2195 | |
|
|
2196 | /* pop args */ |
|
|
2197 | SP = PL_stack_base + POPMARK; |
|
|
2198 | |
|
|
2199 | PUTBACK; |
|
|
2200 | } |
|
|
2201 | |
|
|
2202 | /* now that we have a slf_frame, interpret it! */ |
|
|
2203 | /* we use a callback system not to make the code needlessly */ |
|
|
2204 | /* complicated, but so we can run multiple perl coros from one cctx */ |
|
|
2205 | |
|
|
2206 | do |
|
|
2207 | { |
965 | struct transfer_args ta; |
2208 | struct coro_transfer_args ta; |
966 | |
2209 | |
967 | prepare_schedule (&ta); |
2210 | slf_frame.prepare (aTHX_ &ta); |
968 | TRANSFER (ta); |
2211 | TRANSFER (ta, 0); |
969 | } |
|
|
970 | |
2212 | |
|
|
2213 | checkmark = PL_stack_sp - PL_stack_base; |
|
|
2214 | } |
|
|
2215 | while (slf_frame.check (aTHX_ &slf_frame)); |
|
|
2216 | |
|
|
2217 | slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ |
|
|
2218 | |
|
|
2219 | /* exception handling */ |
|
|
2220 | if (expect_false (CORO_THROW)) |
|
|
2221 | { |
|
|
2222 | SV *exception = sv_2mortal (CORO_THROW); |
|
|
2223 | |
|
|
2224 | CORO_THROW = 0; |
|
|
2225 | sv_setsv (ERRSV, exception); |
|
|
2226 | croak (0); |
|
|
2227 | } |
|
|
2228 | |
|
|
2229 | /* return value handling - mostly like entersub */ |
|
|
2230 | /* make sure we put something on the stack in scalar context */ |
|
|
2231 | if (GIMME_V == G_SCALAR) |
|
|
2232 | { |
|
|
2233 | dSP; |
|
|
2234 | SV **bot = PL_stack_base + checkmark; |
|
|
2235 | |
|
|
2236 | if (sp == bot) /* too few, push undef */ |
|
|
2237 | bot [1] = &PL_sv_undef; |
|
|
2238 | else if (sp != bot + 1) /* too many, take last one */ |
|
|
2239 | bot [1] = *sp; |
|
|
2240 | |
|
|
2241 | SP = bot + 1; |
|
|
2242 | |
|
|
2243 | PUTBACK; |
|
|
2244 | } |
|
|
2245 | |
|
|
2246 | return NORMAL; |
|
|
2247 | } |
|
|
2248 | |
|
|
2249 | static void |
|
|
2250 | api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax) |
|
|
2251 | { |
|
|
2252 | int i; |
|
|
2253 | SV **arg = PL_stack_base + ax; |
|
|
2254 | int items = PL_stack_sp - arg + 1; |
|
|
2255 | |
|
|
2256 | assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
|
|
2257 | |
|
|
2258 | if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
|
|
2259 | && PL_op->op_ppaddr != pp_slf) |
|
|
2260 | croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
|
|
2261 | |
|
|
2262 | CvFLAGS (cv) |= CVf_SLF; |
|
|
2263 | CvXSUBANY (cv).any_ptr = (void *)init_cb; |
|
|
2264 | slf_cv = cv; |
|
|
2265 | |
|
|
2266 | /* we patch the op, and then re-run the whole call */ |
|
|
2267 | /* we have to put the same argument on the stack for this to work */ |
|
|
2268 | /* and this will be done by pp_restore */ |
|
|
2269 | slf_restore.op_next = (OP *)&slf_restore; |
|
|
2270 | slf_restore.op_type = OP_CUSTOM; |
|
|
2271 | slf_restore.op_ppaddr = pp_restore; |
|
|
2272 | slf_restore.op_first = PL_op; |
|
|
2273 | |
|
|
2274 | slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */ |
|
|
2275 | |
|
|
2276 | if (PL_op->op_flags & OPf_STACKED) |
|
|
2277 | { |
|
|
2278 | if (items > slf_arga) |
|
|
2279 | { |
|
|
2280 | slf_arga = items; |
|
|
2281 | free (slf_argv); |
|
|
2282 | slf_argv = malloc (slf_arga * sizeof (SV *)); |
|
|
2283 | } |
|
|
2284 | |
|
|
2285 | slf_argc = items; |
|
|
2286 | |
|
|
2287 | for (i = 0; i < items; ++i) |
|
|
2288 | slf_argv [i] = SvREFCNT_inc (arg [i]); |
|
|
2289 | } |
|
|
2290 | else |
|
|
2291 | slf_argc = 0; |
|
|
2292 | |
|
|
2293 | PL_op->op_ppaddr = pp_slf; |
|
|
2294 | /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */ |
|
|
2295 | |
|
|
2296 | PL_op = (OP *)&slf_restore; |
|
|
2297 | } |
|
|
2298 | |
|
|
2299 | /*****************************************************************************/ |
|
|
2300 | /* PerlIO::cede */ |
|
|
2301 | |
|
|
2302 | typedef struct |
|
|
2303 | { |
|
|
2304 | PerlIOBuf base; |
|
|
2305 | NV next, every; |
|
|
2306 | } PerlIOCede; |
|
|
2307 | |
|
|
2308 | static IV |
|
|
2309 | PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
|
|
2310 | { |
|
|
2311 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2312 | |
|
|
2313 | self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
|
|
2314 | self->next = nvtime () + self->every; |
|
|
2315 | |
|
|
2316 | return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
|
|
2317 | } |
|
|
2318 | |
|
|
2319 | static SV * |
|
|
2320 | PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
|
|
2321 | { |
|
|
2322 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2323 | |
|
|
2324 | return newSVnv (self->every); |
|
|
2325 | } |
|
|
2326 | |
|
|
2327 | static IV |
|
|
2328 | PerlIOCede_flush (pTHX_ PerlIO *f) |
|
|
2329 | { |
|
|
2330 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2331 | double now = nvtime (); |
|
|
2332 | |
|
|
2333 | if (now >= self->next) |
|
|
2334 | { |
|
|
2335 | api_cede (aTHX); |
|
|
2336 | self->next = now + self->every; |
|
|
2337 | } |
|
|
2338 | |
|
|
2339 | return PerlIOBuf_flush (aTHX_ f); |
|
|
2340 | } |
|
|
2341 | |
|
|
2342 | static PerlIO_funcs PerlIO_cede = |
|
|
2343 | { |
|
|
2344 | sizeof(PerlIO_funcs), |
|
|
2345 | "cede", |
|
|
2346 | sizeof(PerlIOCede), |
|
|
2347 | PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
|
|
2348 | PerlIOCede_pushed, |
|
|
2349 | PerlIOBuf_popped, |
|
|
2350 | PerlIOBuf_open, |
|
|
2351 | PerlIOBase_binmode, |
|
|
2352 | PerlIOCede_getarg, |
|
|
2353 | PerlIOBase_fileno, |
|
|
2354 | PerlIOBuf_dup, |
|
|
2355 | PerlIOBuf_read, |
|
|
2356 | PerlIOBuf_unread, |
|
|
2357 | PerlIOBuf_write, |
|
|
2358 | PerlIOBuf_seek, |
|
|
2359 | PerlIOBuf_tell, |
|
|
2360 | PerlIOBuf_close, |
|
|
2361 | PerlIOCede_flush, |
|
|
2362 | PerlIOBuf_fill, |
|
|
2363 | PerlIOBase_eof, |
|
|
2364 | PerlIOBase_error, |
|
|
2365 | PerlIOBase_clearerr, |
|
|
2366 | PerlIOBase_setlinebuf, |
|
|
2367 | PerlIOBuf_get_base, |
|
|
2368 | PerlIOBuf_bufsiz, |
|
|
2369 | PerlIOBuf_get_ptr, |
|
|
2370 | PerlIOBuf_get_cnt, |
|
|
2371 | PerlIOBuf_set_ptrcnt, |
|
|
2372 | }; |
|
|
2373 | |
|
|
2374 | /*****************************************************************************/ |
|
|
2375 | /* Coro::Semaphore & Coro::Signal */ |
|
|
2376 | |
|
|
2377 | static SV * |
|
|
2378 | coro_waitarray_new (pTHX_ int count) |
|
|
2379 | { |
|
|
2380 | /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
|
|
2381 | AV *av = newAV (); |
|
|
2382 | SV **ary; |
|
|
2383 | |
|
|
2384 | /* unfortunately, building manually saves memory */ |
|
|
2385 | Newx (ary, 2, SV *); |
|
|
2386 | AvALLOC (av) = ary; |
|
|
2387 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
2388 | AvARRAY (av) = ary; |
|
|
2389 | #else |
|
|
2390 | /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */ |
|
|
2391 | /* -DDEBUGGING flags this as a bug, despite it perfectly working */ |
|
|
2392 | SvPVX ((SV *)av) = (char *)ary; |
|
|
2393 | #endif |
|
|
2394 | AvMAX (av) = 1; |
|
|
2395 | AvFILLp (av) = 0; |
|
|
2396 | ary [0] = newSViv (count); |
|
|
2397 | |
|
|
2398 | return newRV_noinc ((SV *)av); |
|
|
2399 | } |
|
|
2400 | |
|
|
2401 | /* semaphore */ |
|
|
2402 | |
|
|
2403 | static void |
|
|
2404 | coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
|
|
2405 | { |
|
|
2406 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2407 | IV count = SvIVX (count_sv); |
|
|
2408 | |
|
|
2409 | count += adjust; |
|
|
2410 | SvIVX (count_sv) = count; |
|
|
2411 | |
|
|
2412 | /* now wake up as many waiters as are expected to lock */ |
|
|
2413 | while (count > 0 && AvFILLp (av) > 0) |
|
|
2414 | { |
|
|
2415 | SV *cb; |
|
|
2416 | |
|
|
2417 | /* swap first two elements so we can shift a waiter */ |
|
|
2418 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2419 | AvARRAY (av)[1] = count_sv; |
|
|
2420 | cb = av_shift (av); |
|
|
2421 | |
|
|
2422 | if (SvOBJECT (cb)) |
|
|
2423 | { |
|
|
2424 | api_ready (aTHX_ cb); |
|
|
2425 | --count; |
|
|
2426 | } |
|
|
2427 | else if (SvTYPE (cb) == SVt_PVCV) |
|
|
2428 | { |
|
|
2429 | dSP; |
|
|
2430 | PUSHMARK (SP); |
|
|
2431 | XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
|
|
2432 | PUTBACK; |
|
|
2433 | call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
|
|
2434 | } |
|
|
2435 | |
|
|
2436 | SvREFCNT_dec (cb); |
|
|
2437 | } |
|
|
2438 | } |
|
|
2439 | |
|
|
2440 | static void |
|
|
2441 | coro_semaphore_on_destroy (pTHX_ struct coro *coro) |
|
|
2442 | { |
|
|
2443 | /* call $sem->adjust (0) to possibly wake up some other waiters */ |
|
|
2444 | coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); |
|
|
2445 | } |
|
|
2446 | |
971 | static void |
2447 | static int |
972 | api_cede (void) |
2448 | slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) |
973 | { |
2449 | { |
974 | dTHX; |
2450 | AV *av = (AV *)frame->data; |
975 | struct transfer_args ta; |
2451 | SV *count_sv = AvARRAY (av)[0]; |
976 | |
2452 | |
977 | prepare_cede (&ta); |
2453 | /* if we are about to throw, don't actually acquire the lock, just throw */ |
978 | TRANSFER (ta); |
2454 | if (CORO_THROW) |
979 | } |
2455 | return 0; |
|
|
2456 | else if (SvIVX (count_sv) > 0) |
|
|
2457 | { |
|
|
2458 | SvSTATE_current->on_destroy = 0; |
980 | |
2459 | |
|
|
2460 | if (acquire) |
|
|
2461 | SvIVX (count_sv) = SvIVX (count_sv) - 1; |
|
|
2462 | else |
|
|
2463 | coro_semaphore_adjust (aTHX_ av, 0); |
|
|
2464 | |
|
|
2465 | return 0; |
|
|
2466 | } |
|
|
2467 | else |
|
|
2468 | { |
|
|
2469 | int i; |
|
|
2470 | /* if we were woken up but can't down, we look through the whole */ |
|
|
2471 | /* waiters list and only add us if we aren't in there already */ |
|
|
2472 | /* this avoids some degenerate memory usage cases */ |
|
|
2473 | |
|
|
2474 | for (i = 1; i <= AvFILLp (av); ++i) |
|
|
2475 | if (AvARRAY (av)[i] == SvRV (coro_current)) |
|
|
2476 | return 1; |
|
|
2477 | |
|
|
2478 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2479 | return 1; |
|
|
2480 | } |
|
|
2481 | } |
|
|
2482 | |
|
|
2483 | static int |
|
|
2484 | slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
|
|
2485 | { |
|
|
2486 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 1); |
|
|
2487 | } |
|
|
2488 | |
|
|
2489 | static int |
|
|
2490 | slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame) |
|
|
2491 | { |
|
|
2492 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 0); |
|
|
2493 | } |
|
|
2494 | |
|
|
2495 | static void |
|
|
2496 | slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2497 | { |
|
|
2498 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2499 | |
|
|
2500 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
2501 | { |
|
|
2502 | frame->data = (void *)av; |
|
|
2503 | frame->prepare = prepare_nop; |
|
|
2504 | } |
|
|
2505 | else |
|
|
2506 | { |
|
|
2507 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2508 | |
|
|
2509 | frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
|
|
2510 | frame->prepare = prepare_schedule; |
|
|
2511 | |
|
|
2512 | /* to avoid race conditions when a woken-up coro gets terminated */ |
|
|
2513 | /* we arrange for a temporary on_destroy that calls adjust (0) */ |
|
|
2514 | SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
|
|
2515 | } |
|
|
2516 | } |
|
|
2517 | |
|
|
2518 | static void |
|
|
2519 | slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2520 | { |
|
|
2521 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
|
|
2522 | frame->check = slf_check_semaphore_down; |
|
|
2523 | } |
|
|
2524 | |
|
|
2525 | static void |
|
|
2526 | slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2527 | { |
|
|
2528 | if (items >= 2) |
|
|
2529 | { |
|
|
2530 | /* callback form */ |
|
|
2531 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2532 | CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]); |
|
|
2533 | |
|
|
2534 | av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); |
|
|
2535 | |
|
|
2536 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
2537 | coro_semaphore_adjust (aTHX_ av, 0); |
|
|
2538 | |
|
|
2539 | frame->prepare = prepare_nop; |
|
|
2540 | frame->check = slf_check_nop; |
|
|
2541 | } |
|
|
2542 | else |
|
|
2543 | { |
|
|
2544 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
|
|
2545 | frame->check = slf_check_semaphore_wait; |
|
|
2546 | } |
|
|
2547 | } |
|
|
2548 | |
|
|
2549 | /* signal */ |
|
|
2550 | |
|
|
2551 | static void |
|
|
2552 | coro_signal_wake (pTHX_ AV *av, int count) |
|
|
2553 | { |
|
|
2554 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
2555 | |
|
|
2556 | /* now signal count waiters */ |
|
|
2557 | while (count > 0 && AvFILLp (av) > 0) |
|
|
2558 | { |
|
|
2559 | SV *cb; |
|
|
2560 | |
|
|
2561 | /* swap first two elements so we can shift a waiter */ |
|
|
2562 | cb = AvARRAY (av)[0]; |
|
|
2563 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2564 | AvARRAY (av)[1] = cb; |
|
|
2565 | |
|
|
2566 | cb = av_shift (av); |
|
|
2567 | |
|
|
2568 | api_ready (aTHX_ cb); |
|
|
2569 | sv_setiv (cb, 0); /* signal waiter */ |
|
|
2570 | SvREFCNT_dec (cb); |
|
|
2571 | |
|
|
2572 | --count; |
|
|
2573 | } |
|
|
2574 | } |
|
|
2575 | |
|
|
2576 | static int |
|
|
2577 | slf_check_signal_wait (pTHX_ struct CoroSLF *frame) |
|
|
2578 | { |
|
|
2579 | /* if we are about to throw, also stop waiting */ |
|
|
2580 | return SvROK ((SV *)frame->data) && !CORO_THROW; |
|
|
2581 | } |
|
|
2582 | |
|
|
2583 | static void |
|
|
2584 | slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2585 | { |
|
|
2586 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2587 | |
|
|
2588 | if (SvIVX (AvARRAY (av)[0])) |
|
|
2589 | { |
|
|
2590 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
2591 | frame->prepare = prepare_nop; |
|
|
2592 | frame->check = slf_check_nop; |
|
|
2593 | } |
|
|
2594 | else |
|
|
2595 | { |
|
|
2596 | SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ |
|
|
2597 | |
|
|
2598 | av_push (av, waiter); |
|
|
2599 | |
|
|
2600 | frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ |
|
|
2601 | frame->prepare = prepare_schedule; |
|
|
2602 | frame->check = slf_check_signal_wait; |
|
|
2603 | } |
|
|
2604 | } |
|
|
2605 | |
|
|
2606 | /*****************************************************************************/ |
|
|
2607 | /* Coro::AIO */ |
|
|
2608 | |
|
|
2609 | #define CORO_MAGIC_type_aio PERL_MAGIC_ext |
|
|
2610 | |
|
|
2611 | /* helper storage struct */ |
|
|
2612 | struct io_state |
|
|
2613 | { |
|
|
2614 | int errorno; |
|
|
2615 | I32 laststype; /* U16 in 5.10.0 */ |
|
|
2616 | int laststatval; |
|
|
2617 | Stat_t statcache; |
|
|
2618 | }; |
|
|
2619 | |
|
|
2620 | static void |
|
|
2621 | coro_aio_callback (pTHX_ CV *cv) |
|
|
2622 | { |
|
|
2623 | dXSARGS; |
|
|
2624 | AV *state = (AV *)GENSUB_ARG; |
|
|
2625 | SV *coro = av_pop (state); |
|
|
2626 | SV *data_sv = newSV (sizeof (struct io_state)); |
|
|
2627 | |
|
|
2628 | av_extend (state, items - 1); |
|
|
2629 | |
|
|
2630 | sv_upgrade (data_sv, SVt_PV); |
|
|
2631 | SvCUR_set (data_sv, sizeof (struct io_state)); |
|
|
2632 | SvPOK_only (data_sv); |
|
|
2633 | |
|
|
2634 | { |
|
|
2635 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2636 | |
|
|
2637 | data->errorno = errno; |
|
|
2638 | data->laststype = PL_laststype; |
|
|
2639 | data->laststatval = PL_laststatval; |
|
|
2640 | data->statcache = PL_statcache; |
|
|
2641 | } |
|
|
2642 | |
|
|
2643 | /* now build the result vector out of all the parameters and the data_sv */ |
|
|
2644 | { |
|
|
2645 | int i; |
|
|
2646 | |
|
|
2647 | for (i = 0; i < items; ++i) |
|
|
2648 | av_push (state, SvREFCNT_inc_NN (ST (i))); |
|
|
2649 | } |
|
|
2650 | |
|
|
2651 | av_push (state, data_sv); |
|
|
2652 | |
|
|
2653 | api_ready (aTHX_ coro); |
|
|
2654 | SvREFCNT_dec (coro); |
|
|
2655 | SvREFCNT_dec ((AV *)state); |
|
|
2656 | } |
|
|
2657 | |
|
|
2658 | static int |
|
|
2659 | slf_check_aio_req (pTHX_ struct CoroSLF *frame) |
|
|
2660 | { |
|
|
2661 | AV *state = (AV *)frame->data; |
|
|
2662 | |
|
|
2663 | /* if we are about to throw, return early */ |
|
|
2664 | /* this does not cancel the aio request, but at least */ |
|
|
2665 | /* it quickly returns */ |
|
|
2666 | if (CORO_THROW) |
|
|
2667 | return 0; |
|
|
2668 | |
|
|
2669 | /* one element that is an RV? repeat! */ |
|
|
2670 | if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) |
|
|
2671 | return 1; |
|
|
2672 | |
|
|
2673 | /* restore status */ |
|
|
2674 | { |
|
|
2675 | SV *data_sv = av_pop (state); |
|
|
2676 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2677 | |
|
|
2678 | errno = data->errorno; |
|
|
2679 | PL_laststype = data->laststype; |
|
|
2680 | PL_laststatval = data->laststatval; |
|
|
2681 | PL_statcache = data->statcache; |
|
|
2682 | |
|
|
2683 | SvREFCNT_dec (data_sv); |
|
|
2684 | } |
|
|
2685 | |
|
|
2686 | /* push result values */ |
|
|
2687 | { |
|
|
2688 | dSP; |
|
|
2689 | int i; |
|
|
2690 | |
|
|
2691 | EXTEND (SP, AvFILLp (state) + 1); |
|
|
2692 | for (i = 0; i <= AvFILLp (state); ++i) |
|
|
2693 | PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i]))); |
|
|
2694 | |
|
|
2695 | PUTBACK; |
|
|
2696 | } |
|
|
2697 | |
|
|
2698 | return 0; |
|
|
2699 | } |
|
|
2700 | |
|
|
2701 | static void |
|
|
2702 | slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2703 | { |
|
|
2704 | AV *state = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
2705 | SV *coro_hv = SvRV (coro_current); |
|
|
2706 | struct coro *coro = SvSTATE_hv (coro_hv); |
|
|
2707 | |
|
|
2708 | /* put our coroutine id on the state arg */ |
|
|
2709 | av_push (state, SvREFCNT_inc_NN (coro_hv)); |
|
|
2710 | |
|
|
2711 | /* first see whether we have a non-zero priority and set it as AIO prio */ |
|
|
2712 | if (coro->prio) |
|
|
2713 | { |
|
|
2714 | dSP; |
|
|
2715 | |
|
|
2716 | static SV *prio_cv; |
|
|
2717 | static SV *prio_sv; |
|
|
2718 | |
|
|
2719 | if (expect_false (!prio_cv)) |
|
|
2720 | { |
|
|
2721 | prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); |
|
|
2722 | prio_sv = newSViv (0); |
|
|
2723 | } |
|
|
2724 | |
|
|
2725 | PUSHMARK (SP); |
|
|
2726 | sv_setiv (prio_sv, coro->prio); |
|
|
2727 | XPUSHs (prio_sv); |
|
|
2728 | |
|
|
2729 | PUTBACK; |
|
|
2730 | call_sv (prio_cv, G_VOID | G_DISCARD); |
|
|
2731 | } |
|
|
2732 | |
|
|
2733 | /* now call the original request */ |
|
|
2734 | { |
|
|
2735 | dSP; |
|
|
2736 | CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj; |
|
|
2737 | int i; |
|
|
2738 | |
|
|
2739 | PUSHMARK (SP); |
|
|
2740 | |
|
|
2741 | /* first push all args to the stack */ |
|
|
2742 | EXTEND (SP, items + 1); |
|
|
2743 | |
|
|
2744 | for (i = 0; i < items; ++i) |
|
|
2745 | PUSHs (arg [i]); |
|
|
2746 | |
|
|
2747 | /* now push the callback closure */ |
|
|
2748 | PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); |
|
|
2749 | |
|
|
2750 | /* now call the AIO function - we assume our request is uncancelable */ |
|
|
2751 | PUTBACK; |
|
|
2752 | call_sv ((SV *)req, G_VOID | G_DISCARD); |
|
|
2753 | } |
|
|
2754 | |
|
|
2755 | /* now that the requets is going, we loop toll we have a result */ |
|
|
2756 | frame->data = (void *)state; |
|
|
2757 | frame->prepare = prepare_schedule; |
|
|
2758 | frame->check = slf_check_aio_req; |
|
|
2759 | } |
|
|
2760 | |
|
|
2761 | static void |
|
|
2762 | coro_aio_req_xs (pTHX_ CV *cv) |
|
|
2763 | { |
|
|
2764 | dXSARGS; |
|
|
2765 | |
|
|
2766 | CORO_EXECUTE_SLF_XS (slf_init_aio_req); |
|
|
2767 | |
|
|
2768 | XSRETURN_EMPTY; |
|
|
2769 | } |
|
|
2770 | |
|
|
2771 | /*****************************************************************************/ |
|
|
2772 | |
|
|
2773 | #if CORO_CLONE |
|
|
2774 | # include "clone.c" |
|
|
2775 | #endif |
|
|
2776 | |
981 | MODULE = Coro::State PACKAGE = Coro::State |
2777 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
982 | |
2778 | |
983 | PROTOTYPES: DISABLE |
2779 | PROTOTYPES: DISABLE |
984 | |
2780 | |
985 | BOOT: |
2781 | BOOT: |
986 | { |
2782 | { |
987 | #ifdef USE_ITHREADS |
2783 | #ifdef USE_ITHREADS |
988 | MUTEX_INIT (&coro_mutex); |
2784 | # if CORO_PTHREAD |
|
|
2785 | coro_thx = PERL_GET_CONTEXT; |
|
|
2786 | # endif |
989 | #endif |
2787 | #endif |
990 | BOOT_PAGESIZE; |
2788 | BOOT_PAGESIZE; |
991 | |
2789 | |
|
|
2790 | cctx_current = cctx_new_empty (); |
|
|
2791 | |
|
|
2792 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
|
|
2793 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
|
|
2794 | |
|
|
2795 | orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
|
|
2796 | orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
|
|
2797 | orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
|
|
2798 | |
|
|
2799 | hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
|
|
2800 | rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
|
|
2801 | rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
|
|
2802 | |
992 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
2803 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
993 | |
2804 | |
994 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
2805 | newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
995 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
2806 | newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
996 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
2807 | newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
|
|
2808 | newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
997 | |
2809 | |
998 | main_mainstack = PL_mainstack; |
2810 | main_mainstack = PL_mainstack; |
|
|
2811 | main_top_env = PL_top_env; |
999 | |
2812 | |
|
|
2813 | while (main_top_env->je_prev) |
|
|
2814 | main_top_env = main_top_env->je_prev; |
|
|
2815 | |
|
|
2816 | { |
|
|
2817 | SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); |
|
|
2818 | |
|
|
2819 | if (!PL_custom_op_names) PL_custom_op_names = newHV (); |
|
|
2820 | hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0); |
|
|
2821 | |
|
|
2822 | if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); |
|
|
2823 | hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0); |
|
|
2824 | } |
|
|
2825 | |
1000 | coroapi.ver = CORO_API_VERSION; |
2826 | coroapi.ver = CORO_API_VERSION; |
|
|
2827 | coroapi.rev = CORO_API_REVISION; |
|
|
2828 | |
1001 | coroapi.transfer = api_transfer; |
2829 | coroapi.transfer = api_transfer; |
1002 | |
2830 | |
1003 | Newz (0, main_stack, 1, coro_stack); |
2831 | coroapi.sv_state = SvSTATE_; |
1004 | main_stack->idle_sp = (void *)-1; |
2832 | coroapi.execute_slf = api_execute_slf; |
|
|
2833 | coroapi.prepare_nop = prepare_nop; |
|
|
2834 | coroapi.prepare_schedule = prepare_schedule; |
|
|
2835 | coroapi.prepare_cede = prepare_cede; |
|
|
2836 | coroapi.prepare_cede_notself = prepare_cede_notself; |
|
|
2837 | |
|
|
2838 | { |
|
|
2839 | SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
|
|
2840 | |
|
|
2841 | if (!svp) croak ("Time::HiRes is required"); |
|
|
2842 | if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); |
|
|
2843 | |
|
|
2844 | nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
|
|
2845 | } |
1005 | |
2846 | |
1006 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
2847 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1007 | } |
2848 | } |
1008 | |
2849 | |
1009 | SV * |
2850 | SV * |
1010 | new (char *klass, ...) |
2851 | new (char *klass, ...) |
|
|
2852 | ALIAS: |
|
|
2853 | Coro::new = 1 |
1011 | CODE: |
2854 | CODE: |
1012 | { |
2855 | { |
1013 | struct coro *coro; |
2856 | struct coro *coro; |
|
|
2857 | MAGIC *mg; |
1014 | HV *hv; |
2858 | HV *hv; |
|
|
2859 | CV *cb; |
1015 | int i; |
2860 | int i; |
1016 | |
2861 | |
|
|
2862 | if (items > 1) |
|
|
2863 | { |
|
|
2864 | cb = coro_sv_2cv (aTHX_ ST (1)); |
|
|
2865 | |
|
|
2866 | if (!ix) |
|
|
2867 | { |
|
|
2868 | if (CvISXSUB (cb)) |
|
|
2869 | croak ("Coro::State doesn't support XS functions as coroutine start, caught"); |
|
|
2870 | |
|
|
2871 | if (!CvROOT (cb)) |
|
|
2872 | croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught"); |
|
|
2873 | } |
|
|
2874 | } |
|
|
2875 | |
1017 | Newz (0, coro, 1, struct coro); |
2876 | Newz (0, coro, 1, struct coro); |
1018 | coro->args = newAV (); |
2877 | coro->args = newAV (); |
|
|
2878 | coro->flags = CF_NEW; |
1019 | |
2879 | |
|
|
2880 | if (coro_first) coro_first->prev = coro; |
|
|
2881 | coro->next = coro_first; |
|
|
2882 | coro_first = coro; |
|
|
2883 | |
1020 | hv = newHV (); |
2884 | coro->hv = hv = newHV (); |
1021 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
2885 | mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
|
|
2886 | mg->mg_flags |= MGf_DUP; |
1022 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
2887 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1023 | |
2888 | |
|
|
2889 | if (items > 1) |
|
|
2890 | { |
|
|
2891 | av_extend (coro->args, items - 1 + ix - 1); |
|
|
2892 | |
|
|
2893 | if (ix) |
|
|
2894 | { |
|
|
2895 | av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb)); |
|
|
2896 | cb = cv_coro_run; |
|
|
2897 | } |
|
|
2898 | |
|
|
2899 | coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb); |
|
|
2900 | |
1024 | for (i = 1; i < items; i++) |
2901 | for (i = 2; i < items; i++) |
1025 | av_push (coro->args, newSVsv (ST (i))); |
2902 | av_push (coro->args, newSVsv (ST (i))); |
1026 | |
2903 | } |
1027 | coro->stack = main_stack; |
|
|
1028 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
|
|
1029 | /*coro->stack = 0;*/ |
|
|
1030 | } |
2904 | } |
1031 | OUTPUT: |
2905 | OUTPUT: |
1032 | RETVAL |
2906 | RETVAL |
1033 | |
2907 | |
1034 | void |
2908 | void |
1035 | transfer (...) |
2909 | transfer (...) |
1036 | ALIAS: |
2910 | PROTOTYPE: $$ |
1037 | Coro::schedule = 1 |
2911 | CODE: |
1038 | Coro::cede = 2 |
2912 | CORO_EXECUTE_SLF_XS (slf_init_transfer); |
1039 | _set_stacklevel = 3 |
|
|
1040 | CODE: |
|
|
1041 | { |
|
|
1042 | struct transfer_args ta; |
|
|
1043 | |
2913 | |
1044 | switch (ix) |
2914 | bool |
1045 | { |
2915 | _destroy (SV *coro_sv) |
1046 | case 0: |
2916 | CODE: |
1047 | if (items != 3) |
2917 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
1048 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
2918 | OUTPUT: |
1049 | |
2919 | RETVAL |
1050 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
|
|
1051 | break; |
|
|
1052 | |
|
|
1053 | case 1: |
|
|
1054 | prepare_schedule (&ta); |
|
|
1055 | break; |
|
|
1056 | |
|
|
1057 | case 2: |
|
|
1058 | prepare_cede (&ta); |
|
|
1059 | break; |
|
|
1060 | |
|
|
1061 | case 3: |
|
|
1062 | ta.prev = (struct coro *)INT2PTR (coro_stack *, SvIV (ST (0))); |
|
|
1063 | ta.next = 0; |
|
|
1064 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1065 | break; |
|
|
1066 | } |
|
|
1067 | |
|
|
1068 | TRANSFER (ta); |
|
|
1069 | } |
|
|
1070 | |
2920 | |
1071 | void |
2921 | void |
1072 | _clone_state_from (SV *dst, SV *src) |
|
|
1073 | CODE: |
|
|
1074 | { |
|
|
1075 | struct coro *coro_src = SvSTATE (src); |
|
|
1076 | |
|
|
1077 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
|
|
1078 | |
|
|
1079 | ++coro_src->refcnt; |
|
|
1080 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
|
|
1081 | } |
|
|
1082 | |
|
|
1083 | void |
|
|
1084 | _nonlocal_goto (IV nextop) |
|
|
1085 | CODE: |
|
|
1086 | /* uuh, somebody will kill me again for this */ |
|
|
1087 | PL_op->op_next = INT2PTR (OP *, nextop); |
|
|
1088 | |
|
|
1089 | void |
|
|
1090 | _exit (code) |
2922 | _exit (int code) |
1091 | int code |
|
|
1092 | PROTOTYPE: $ |
2923 | PROTOTYPE: $ |
1093 | CODE: |
2924 | CODE: |
1094 | _exit (code); |
2925 | _exit (code); |
1095 | |
2926 | |
1096 | MODULE = Coro::State PACKAGE = Coro::Cont |
2927 | SV * |
|
|
2928 | clone (Coro::State coro) |
|
|
2929 | CODE: |
|
|
2930 | { |
|
|
2931 | #if CORO_CLONE |
|
|
2932 | struct coro *ncoro = coro_clone (aTHX_ coro); |
|
|
2933 | MAGIC *mg; |
|
|
2934 | /* TODO: too much duplication */ |
|
|
2935 | ncoro->hv = newHV (); |
|
|
2936 | mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0); |
|
|
2937 | mg->mg_flags |= MGf_DUP; |
|
|
2938 | RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv)); |
|
|
2939 | #else |
|
|
2940 | croak ("Coro::State->clone has not been configured into this installation of Coro, realised"); |
|
|
2941 | #endif |
|
|
2942 | } |
|
|
2943 | OUTPUT: |
|
|
2944 | RETVAL |
|
|
2945 | |
|
|
2946 | int |
|
|
2947 | cctx_stacksize (int new_stacksize = 0) |
|
|
2948 | PROTOTYPE: ;$ |
|
|
2949 | CODE: |
|
|
2950 | RETVAL = cctx_stacksize; |
|
|
2951 | if (new_stacksize) |
|
|
2952 | { |
|
|
2953 | cctx_stacksize = new_stacksize; |
|
|
2954 | ++cctx_gen; |
|
|
2955 | } |
|
|
2956 | OUTPUT: |
|
|
2957 | RETVAL |
|
|
2958 | |
|
|
2959 | int |
|
|
2960 | cctx_max_idle (int max_idle = 0) |
|
|
2961 | PROTOTYPE: ;$ |
|
|
2962 | CODE: |
|
|
2963 | RETVAL = cctx_max_idle; |
|
|
2964 | if (max_idle > 1) |
|
|
2965 | cctx_max_idle = max_idle; |
|
|
2966 | OUTPUT: |
|
|
2967 | RETVAL |
|
|
2968 | |
|
|
2969 | int |
|
|
2970 | cctx_count () |
|
|
2971 | PROTOTYPE: |
|
|
2972 | CODE: |
|
|
2973 | RETVAL = cctx_count; |
|
|
2974 | OUTPUT: |
|
|
2975 | RETVAL |
|
|
2976 | |
|
|
2977 | int |
|
|
2978 | cctx_idle () |
|
|
2979 | PROTOTYPE: |
|
|
2980 | CODE: |
|
|
2981 | RETVAL = cctx_idle; |
|
|
2982 | OUTPUT: |
|
|
2983 | RETVAL |
1097 | |
2984 | |
1098 | void |
2985 | void |
1099 | yield (...) |
2986 | list () |
1100 | PROTOTYPE: @ |
2987 | PROTOTYPE: |
|
|
2988 | PPCODE: |
|
|
2989 | { |
|
|
2990 | struct coro *coro; |
|
|
2991 | for (coro = coro_first; coro; coro = coro->next) |
|
|
2992 | if (coro->hv) |
|
|
2993 | XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
|
|
2994 | } |
|
|
2995 | |
|
|
2996 | void |
|
|
2997 | call (Coro::State coro, SV *coderef) |
|
|
2998 | ALIAS: |
|
|
2999 | eval = 1 |
|
|
3000 | CODE: |
|
|
3001 | { |
|
|
3002 | if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
|
|
3003 | { |
|
|
3004 | struct coro temp; |
|
|
3005 | |
|
|
3006 | if (!(coro->flags & CF_RUNNING)) |
|
|
3007 | { |
|
|
3008 | PUTBACK; |
|
|
3009 | save_perl (aTHX_ &temp); |
|
|
3010 | load_perl (aTHX_ coro); |
|
|
3011 | } |
|
|
3012 | |
|
|
3013 | { |
|
|
3014 | dSP; |
|
|
3015 | ENTER; |
|
|
3016 | SAVETMPS; |
|
|
3017 | PUTBACK; |
|
|
3018 | PUSHSTACK; |
|
|
3019 | PUSHMARK (SP); |
|
|
3020 | |
|
|
3021 | if (ix) |
|
|
3022 | eval_sv (coderef, 0); |
|
|
3023 | else |
|
|
3024 | call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
3025 | |
|
|
3026 | POPSTACK; |
|
|
3027 | SPAGAIN; |
|
|
3028 | FREETMPS; |
|
|
3029 | LEAVE; |
|
|
3030 | PUTBACK; |
|
|
3031 | } |
|
|
3032 | |
|
|
3033 | if (!(coro->flags & CF_RUNNING)) |
|
|
3034 | { |
|
|
3035 | save_perl (aTHX_ coro); |
|
|
3036 | load_perl (aTHX_ &temp); |
|
|
3037 | SPAGAIN; |
|
|
3038 | } |
|
|
3039 | } |
|
|
3040 | } |
|
|
3041 | |
|
|
3042 | SV * |
|
|
3043 | is_ready (Coro::State coro) |
|
|
3044 | PROTOTYPE: $ |
|
|
3045 | ALIAS: |
|
|
3046 | is_ready = CF_READY |
|
|
3047 | is_running = CF_RUNNING |
|
|
3048 | is_new = CF_NEW |
|
|
3049 | is_destroyed = CF_DESTROYED |
|
|
3050 | CODE: |
|
|
3051 | RETVAL = boolSV (coro->flags & ix); |
|
|
3052 | OUTPUT: |
|
|
3053 | RETVAL |
|
|
3054 | |
|
|
3055 | void |
|
|
3056 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
|
|
3057 | PROTOTYPE: $;$ |
1101 | CODE: |
3058 | CODE: |
1102 | { |
3059 | { |
1103 | SV *yieldstack; |
3060 | struct coro *current = SvSTATE_current; |
1104 | SV *sv; |
3061 | SV **throwp = self == current ? &CORO_THROW : &self->except; |
1105 | AV *defav = GvAV (PL_defgv); |
3062 | SvREFCNT_dec (*throwp); |
1106 | struct coro *prev, *next; |
3063 | *throwp = SvOK (throw) ? newSVsv (throw) : 0; |
|
|
3064 | } |
1107 | |
3065 | |
1108 | yieldstack = *hv_fetch ( |
3066 | void |
1109 | (HV *)SvRV (GvSV (coro_current)), |
3067 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
1110 | "yieldstack", sizeof ("yieldstack") - 1, |
3068 | PROTOTYPE: $;$ |
|
|
3069 | C_ARGS: aTHX_ coro, flags |
|
|
3070 | |
|
|
3071 | SV * |
|
|
3072 | has_cctx (Coro::State coro) |
|
|
3073 | PROTOTYPE: $ |
|
|
3074 | CODE: |
|
|
3075 | /* maybe manage the running flag differently */ |
|
|
3076 | RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING)); |
|
|
3077 | OUTPUT: |
|
|
3078 | RETVAL |
|
|
3079 | |
|
|
3080 | int |
|
|
3081 | is_traced (Coro::State coro) |
|
|
3082 | PROTOTYPE: $ |
|
|
3083 | CODE: |
|
|
3084 | RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
|
|
3085 | OUTPUT: |
|
|
3086 | RETVAL |
|
|
3087 | |
|
|
3088 | UV |
|
|
3089 | rss (Coro::State coro) |
|
|
3090 | PROTOTYPE: $ |
|
|
3091 | ALIAS: |
|
|
3092 | usecount = 1 |
|
|
3093 | CODE: |
|
|
3094 | switch (ix) |
|
|
3095 | { |
|
|
3096 | case 0: RETVAL = coro_rss (aTHX_ coro); break; |
|
|
3097 | case 1: RETVAL = coro->usecount; break; |
1111 | 0 |
3098 | } |
|
|
3099 | OUTPUT: |
|
|
3100 | RETVAL |
|
|
3101 | |
|
|
3102 | void |
|
|
3103 | force_cctx () |
|
|
3104 | PROTOTYPE: |
|
|
3105 | CODE: |
|
|
3106 | cctx_current->idle_sp = 0; |
|
|
3107 | |
|
|
3108 | void |
|
|
3109 | swap_defsv (Coro::State self) |
|
|
3110 | PROTOTYPE: $ |
|
|
3111 | ALIAS: |
|
|
3112 | swap_defav = 1 |
|
|
3113 | CODE: |
|
|
3114 | if (!self->slot) |
|
|
3115 | croak ("cannot swap state with coroutine that has no saved state,"); |
|
|
3116 | else |
1112 | ); |
3117 | { |
|
|
3118 | SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
|
|
3119 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
1113 | |
3120 | |
1114 | /* set up @_ -- ugly */ |
3121 | SV *tmp = *src; *src = *dst; *dst = tmp; |
1115 | av_clear (defav); |
3122 | } |
1116 | av_fill (defav, items - 1); |
|
|
1117 | while (items--) |
|
|
1118 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1119 | |
3123 | |
1120 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1121 | prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1122 | next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1123 | SvREFCNT_dec (sv); |
|
|
1124 | |
|
|
1125 | coro_state_transfer (aTHX_ prev, next, 0); |
|
|
1126 | } |
|
|
1127 | |
3124 | |
1128 | MODULE = Coro::State PACKAGE = Coro |
3125 | MODULE = Coro::State PACKAGE = Coro |
1129 | |
3126 | |
1130 | BOOT: |
3127 | BOOT: |
1131 | { |
3128 | { |
1132 | int i; |
3129 | int i; |
1133 | |
3130 | |
|
|
3131 | sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
|
|
3132 | sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
|
|
3133 | cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD); |
|
|
3134 | cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD); |
|
|
3135 | coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); |
|
|
3136 | av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
|
|
3137 | av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); |
|
|
3138 | sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); |
|
|
3139 | sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); |
|
|
3140 | |
|
|
3141 | sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); |
|
|
3142 | sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); |
|
|
3143 | cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); |
|
|
3144 | cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new); |
|
|
3145 | |
1134 | coro_stash = gv_stashpv ("Coro", TRUE); |
3146 | coro_stash = gv_stashpv ("Coro", TRUE); |
1135 | |
3147 | |
1136 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
3148 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1137 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
3149 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1138 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
3150 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1139 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
3151 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1140 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
3152 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1141 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
3153 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1142 | |
3154 | |
1143 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1144 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1145 | |
|
|
1146 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
3155 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1147 | coro_ready[i] = newAV (); |
3156 | coro_ready[i] = newAV (); |
1148 | |
3157 | |
1149 | { |
3158 | { |
1150 | SV *sv = perl_get_sv("Coro::API", 1); |
3159 | SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
1151 | |
3160 | |
1152 | coroapi.schedule = api_schedule; |
3161 | coroapi.schedule = api_schedule; |
|
|
3162 | coroapi.schedule_to = api_schedule_to; |
1153 | coroapi.cede = api_cede; |
3163 | coroapi.cede = api_cede; |
|
|
3164 | coroapi.cede_notself = api_cede_notself; |
1154 | coroapi.ready = api_ready; |
3165 | coroapi.ready = api_ready; |
|
|
3166 | coroapi.is_ready = api_is_ready; |
1155 | coroapi.nready = &coro_nready; |
3167 | coroapi.nready = coro_nready; |
1156 | coroapi.current = coro_current; |
3168 | coroapi.current = coro_current; |
1157 | |
3169 | |
1158 | GCoroAPI = &coroapi; |
3170 | /*GCoroAPI = &coroapi;*/ |
1159 | sv_setiv (sv, (IV)&coroapi); |
3171 | sv_setiv (sv, (IV)&coroapi); |
1160 | SvREADONLY_on (sv); |
3172 | SvREADONLY_on (sv); |
1161 | } |
3173 | } |
1162 | } |
3174 | } |
1163 | |
3175 | |
|
|
3176 | void |
|
|
3177 | terminate (...) |
|
|
3178 | CODE: |
|
|
3179 | CORO_EXECUTE_SLF_XS (slf_init_terminate); |
|
|
3180 | |
|
|
3181 | void |
|
|
3182 | schedule (...) |
|
|
3183 | CODE: |
|
|
3184 | CORO_EXECUTE_SLF_XS (slf_init_schedule); |
|
|
3185 | |
|
|
3186 | void |
|
|
3187 | schedule_to (...) |
|
|
3188 | CODE: |
|
|
3189 | CORO_EXECUTE_SLF_XS (slf_init_schedule_to); |
|
|
3190 | |
|
|
3191 | void |
|
|
3192 | cede_to (...) |
|
|
3193 | CODE: |
|
|
3194 | CORO_EXECUTE_SLF_XS (slf_init_cede_to); |
|
|
3195 | |
|
|
3196 | void |
|
|
3197 | cede (...) |
|
|
3198 | CODE: |
|
|
3199 | CORO_EXECUTE_SLF_XS (slf_init_cede); |
|
|
3200 | |
|
|
3201 | void |
|
|
3202 | cede_notself (...) |
|
|
3203 | CODE: |
|
|
3204 | CORO_EXECUTE_SLF_XS (slf_init_cede_notself); |
|
|
3205 | |
|
|
3206 | void |
|
|
3207 | _cancel (Coro::State self) |
|
|
3208 | CODE: |
|
|
3209 | coro_state_destroy (aTHX_ self); |
|
|
3210 | coro_call_on_destroy (aTHX_ self); |
|
|
3211 | |
|
|
3212 | void |
|
|
3213 | _set_current (SV *current) |
|
|
3214 | PROTOTYPE: $ |
|
|
3215 | CODE: |
|
|
3216 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
3217 | SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
|
|
3218 | |
|
|
3219 | void |
|
|
3220 | _set_readyhook (SV *hook) |
|
|
3221 | PROTOTYPE: $ |
|
|
3222 | CODE: |
|
|
3223 | SvREFCNT_dec (coro_readyhook); |
|
|
3224 | coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; |
|
|
3225 | |
1164 | int |
3226 | int |
1165 | prio (Coro::State coro, int newprio = 0) |
3227 | prio (Coro::State coro, int newprio = 0) |
|
|
3228 | PROTOTYPE: $;$ |
1166 | ALIAS: |
3229 | ALIAS: |
1167 | nice = 1 |
3230 | nice = 1 |
1168 | CODE: |
3231 | CODE: |
1169 | { |
3232 | { |
1170 | RETVAL = coro->prio; |
3233 | RETVAL = coro->prio; |
1171 | |
3234 | |
1172 | if (items > 1) |
3235 | if (items > 1) |
1173 | { |
3236 | { |
1174 | if (ix) |
3237 | if (ix) |
1175 | newprio += coro->prio; |
3238 | newprio = coro->prio - newprio; |
1176 | |
3239 | |
1177 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
3240 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1178 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
3241 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1179 | |
3242 | |
1180 | coro->prio = newprio; |
3243 | coro->prio = newprio; |
1181 | } |
3244 | } |
1182 | } |
3245 | } |
|
|
3246 | OUTPUT: |
|
|
3247 | RETVAL |
1183 | |
3248 | |
1184 | void |
3249 | SV * |
1185 | ready (SV *self) |
3250 | ready (SV *self) |
1186 | PROTOTYPE: $ |
3251 | PROTOTYPE: $ |
1187 | CODE: |
3252 | CODE: |
1188 | api_ready (self); |
3253 | RETVAL = boolSV (api_ready (aTHX_ self)); |
|
|
3254 | OUTPUT: |
|
|
3255 | RETVAL |
1189 | |
3256 | |
1190 | int |
3257 | int |
1191 | nready (...) |
3258 | nready (...) |
1192 | PROTOTYPE: |
3259 | PROTOTYPE: |
1193 | CODE: |
3260 | CODE: |
1194 | RETVAL = coro_nready; |
3261 | RETVAL = coro_nready; |
1195 | OUTPUT: |
3262 | OUTPUT: |
1196 | RETVAL |
3263 | RETVAL |
1197 | |
3264 | |
1198 | MODULE = Coro::State PACKAGE = Coro::AIO |
3265 | void |
|
|
3266 | _pool_handler (...) |
|
|
3267 | CODE: |
|
|
3268 | CORO_EXECUTE_SLF_XS (slf_init_pool_handler); |
|
|
3269 | |
|
|
3270 | void |
|
|
3271 | async_pool (SV *cv, ...) |
|
|
3272 | PROTOTYPE: &@ |
|
|
3273 | PPCODE: |
|
|
3274 | { |
|
|
3275 | HV *hv = (HV *)av_pop (av_async_pool); |
|
|
3276 | AV *av = newAV (); |
|
|
3277 | SV *cb = ST (0); |
|
|
3278 | int i; |
|
|
3279 | |
|
|
3280 | av_extend (av, items - 2); |
|
|
3281 | for (i = 1; i < items; ++i) |
|
|
3282 | av_push (av, SvREFCNT_inc_NN (ST (i))); |
|
|
3283 | |
|
|
3284 | if ((SV *)hv == &PL_sv_undef) |
|
|
3285 | { |
|
|
3286 | PUSHMARK (SP); |
|
|
3287 | EXTEND (SP, 2); |
|
|
3288 | PUSHs (sv_Coro); |
|
|
3289 | PUSHs ((SV *)cv_pool_handler); |
|
|
3290 | PUTBACK; |
|
|
3291 | call_sv ((SV *)cv_coro_state_new, G_SCALAR); |
|
|
3292 | SPAGAIN; |
|
|
3293 | |
|
|
3294 | hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs)); |
|
|
3295 | } |
|
|
3296 | |
|
|
3297 | { |
|
|
3298 | struct coro *coro = SvSTATE_hv (hv); |
|
|
3299 | |
|
|
3300 | assert (!coro->invoke_cb); |
|
|
3301 | assert (!coro->invoke_av); |
|
|
3302 | coro->invoke_cb = SvREFCNT_inc (cb); |
|
|
3303 | coro->invoke_av = av; |
|
|
3304 | } |
|
|
3305 | |
|
|
3306 | api_ready (aTHX_ (SV *)hv); |
|
|
3307 | |
|
|
3308 | if (GIMME_V != G_VOID) |
|
|
3309 | XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); |
|
|
3310 | else |
|
|
3311 | SvREFCNT_dec (hv); |
|
|
3312 | } |
1199 | |
3313 | |
1200 | SV * |
3314 | SV * |
1201 | _get_state () |
3315 | rouse_cb () |
|
|
3316 | PROTOTYPE: |
1202 | CODE: |
3317 | CODE: |
1203 | { |
3318 | RETVAL = coro_new_rouse_cb (aTHX); |
1204 | struct { |
|
|
1205 | int errorno; |
|
|
1206 | int laststype; |
|
|
1207 | int laststatval; |
|
|
1208 | Stat_t statcache; |
|
|
1209 | } data; |
|
|
1210 | |
|
|
1211 | data.errorno = errno; |
|
|
1212 | data.laststype = PL_laststype; |
|
|
1213 | data.laststatval = PL_laststatval; |
|
|
1214 | data.statcache = PL_statcache; |
|
|
1215 | |
|
|
1216 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1217 | } |
|
|
1218 | OUTPUT: |
3319 | OUTPUT: |
1219 | RETVAL |
3320 | RETVAL |
1220 | |
3321 | |
1221 | void |
3322 | void |
1222 | _set_state (char *data_) |
3323 | rouse_wait (...) |
1223 | PROTOTYPE: $ |
3324 | PROTOTYPE: ;$ |
|
|
3325 | PPCODE: |
|
|
3326 | CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); |
|
|
3327 | |
|
|
3328 | |
|
|
3329 | MODULE = Coro::State PACKAGE = PerlIO::cede |
|
|
3330 | |
|
|
3331 | BOOT: |
|
|
3332 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
|
|
3333 | |
|
|
3334 | |
|
|
3335 | MODULE = Coro::State PACKAGE = Coro::Semaphore |
|
|
3336 | |
|
|
3337 | SV * |
|
|
3338 | new (SV *klass, SV *count = 0) |
1224 | CODE: |
3339 | CODE: |
|
|
3340 | RETVAL = sv_bless ( |
|
|
3341 | coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), |
|
|
3342 | GvSTASH (CvGV (cv)) |
|
|
3343 | ); |
|
|
3344 | OUTPUT: |
|
|
3345 | RETVAL |
|
|
3346 | |
|
|
3347 | # helper for Coro::Channel |
|
|
3348 | SV * |
|
|
3349 | _alloc (int count) |
|
|
3350 | CODE: |
|
|
3351 | RETVAL = coro_waitarray_new (aTHX_ count); |
|
|
3352 | OUTPUT: |
|
|
3353 | RETVAL |
|
|
3354 | |
|
|
3355 | SV * |
|
|
3356 | count (SV *self) |
|
|
3357 | CODE: |
|
|
3358 | RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); |
|
|
3359 | OUTPUT: |
|
|
3360 | RETVAL |
|
|
3361 | |
|
|
3362 | void |
|
|
3363 | up (SV *self, int adjust = 1) |
|
|
3364 | ALIAS: |
|
|
3365 | adjust = 1 |
|
|
3366 | CODE: |
|
|
3367 | coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); |
|
|
3368 | |
|
|
3369 | void |
|
|
3370 | down (...) |
|
|
3371 | CODE: |
|
|
3372 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); |
|
|
3373 | |
|
|
3374 | void |
|
|
3375 | wait (...) |
|
|
3376 | CODE: |
|
|
3377 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); |
|
|
3378 | |
|
|
3379 | void |
|
|
3380 | try (SV *self) |
|
|
3381 | PPCODE: |
1225 | { |
3382 | { |
1226 | struct { |
3383 | AV *av = (AV *)SvRV (self); |
|
|
3384 | SV *count_sv = AvARRAY (av)[0]; |
|
|
3385 | IV count = SvIVX (count_sv); |
|
|
3386 | |
|
|
3387 | if (count > 0) |
|
|
3388 | { |
|
|
3389 | --count; |
|
|
3390 | SvIVX (count_sv) = count; |
|
|
3391 | XSRETURN_YES; |
|
|
3392 | } |
|
|
3393 | else |
|
|
3394 | XSRETURN_NO; |
|
|
3395 | } |
|
|
3396 | |
|
|
3397 | void |
|
|
3398 | waiters (SV *self) |
|
|
3399 | PPCODE: |
|
|
3400 | { |
|
|
3401 | AV *av = (AV *)SvRV (self); |
|
|
3402 | int wcount = AvFILLp (av) + 1 - 1; |
|
|
3403 | |
|
|
3404 | if (GIMME_V == G_SCALAR) |
|
|
3405 | XPUSHs (sv_2mortal (newSViv (wcount))); |
|
|
3406 | else |
|
|
3407 | { |
1227 | int errorno; |
3408 | int i; |
1228 | int laststype; |
3409 | EXTEND (SP, wcount); |
1229 | int laststatval; |
3410 | for (i = 1; i <= wcount; ++i) |
1230 | Stat_t statcache; |
3411 | PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); |
1231 | } *data = (void *)data_; |
3412 | } |
1232 | |
|
|
1233 | errno = data->errorno; |
|
|
1234 | PL_laststype = data->laststype; |
|
|
1235 | PL_laststatval = data->laststatval; |
|
|
1236 | PL_statcache = data->statcache; |
|
|
1237 | } |
3413 | } |
|
|
3414 | |
|
|
3415 | MODULE = Coro::State PACKAGE = Coro::Signal |
|
|
3416 | |
|
|
3417 | SV * |
|
|
3418 | new (SV *klass) |
|
|
3419 | CODE: |
|
|
3420 | RETVAL = sv_bless ( |
|
|
3421 | coro_waitarray_new (aTHX_ 0), |
|
|
3422 | GvSTASH (CvGV (cv)) |
|
|
3423 | ); |
|
|
3424 | OUTPUT: |
|
|
3425 | RETVAL |
|
|
3426 | |
|
|
3427 | void |
|
|
3428 | wait (...) |
|
|
3429 | CODE: |
|
|
3430 | CORO_EXECUTE_SLF_XS (slf_init_signal_wait); |
|
|
3431 | |
|
|
3432 | void |
|
|
3433 | broadcast (SV *self) |
|
|
3434 | CODE: |
|
|
3435 | { |
|
|
3436 | AV *av = (AV *)SvRV (self); |
|
|
3437 | coro_signal_wake (aTHX_ av, AvFILLp (av)); |
|
|
3438 | } |
|
|
3439 | |
|
|
3440 | void |
|
|
3441 | send (SV *self) |
|
|
3442 | CODE: |
|
|
3443 | { |
|
|
3444 | AV *av = (AV *)SvRV (self); |
|
|
3445 | |
|
|
3446 | if (AvFILLp (av)) |
|
|
3447 | coro_signal_wake (aTHX_ av, 1); |
|
|
3448 | else |
|
|
3449 | SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ |
|
|
3450 | } |
|
|
3451 | |
|
|
3452 | IV |
|
|
3453 | awaited (SV *self) |
|
|
3454 | CODE: |
|
|
3455 | RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; |
|
|
3456 | OUTPUT: |
|
|
3457 | RETVAL |
|
|
3458 | |
|
|
3459 | |
|
|
3460 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
|
|
3461 | |
|
|
3462 | BOOT: |
|
|
3463 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
|
|
3464 | |
|
|
3465 | void |
|
|
3466 | _schedule (...) |
|
|
3467 | CODE: |
|
|
3468 | { |
|
|
3469 | static int incede; |
|
|
3470 | |
|
|
3471 | api_cede_notself (aTHX); |
|
|
3472 | |
|
|
3473 | ++incede; |
|
|
3474 | while (coro_nready >= incede && api_cede (aTHX)) |
|
|
3475 | ; |
|
|
3476 | |
|
|
3477 | sv_setsv (sv_activity, &PL_sv_undef); |
|
|
3478 | if (coro_nready >= incede) |
|
|
3479 | { |
|
|
3480 | PUSHMARK (SP); |
|
|
3481 | PUTBACK; |
|
|
3482 | call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
3483 | } |
|
|
3484 | |
|
|
3485 | --incede; |
|
|
3486 | } |
|
|
3487 | |
|
|
3488 | |
|
|
3489 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
3490 | |
|
|
3491 | void |
|
|
3492 | _register (char *target, char *proto, SV *req) |
|
|
3493 | CODE: |
|
|
3494 | { |
|
|
3495 | CV *req_cv = coro_sv_2cv (aTHX_ req); |
|
|
3496 | /* newXSproto doesn't return the CV on 5.8 */ |
|
|
3497 | CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); |
|
|
3498 | sv_setpv ((SV *)slf_cv, proto); |
|
|
3499 | sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); |
|
|
3500 | } |
|
|
3501 | |