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1 | #include "libcoro/coro.c" |
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2 | |
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3 | #define PERL_NO_GET_CONTEXT |
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4 | #define PERL_EXT |
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5 | |
1 | #include "EXTERN.h" |
6 | #include "EXTERN.h" |
2 | #include "perl.h" |
7 | #include "perl.h" |
3 | #include "XSUB.h" |
8 | #include "XSUB.h" |
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9 | #include "perliol.h" |
4 | |
10 | |
5 | #include "libcoro/coro.c" |
11 | #include "patchlevel.h" |
6 | |
12 | |
7 | #include <signal.h> |
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, don't ask |
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22 | #else |
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23 | # include <inttypes.h> /* most portable stdint.h */ |
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24 | #endif |
8 | |
25 | |
9 | #ifdef HAVE_MMAP |
26 | #ifdef HAVE_MMAP |
10 | # include <unistd.h> |
27 | # include <unistd.h> |
11 | # include <sys/mman.h> |
28 | # include <sys/mman.h> |
12 | # ifndef MAP_ANON |
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13 | # ifdef MAP_ANONYMOUS |
29 | # ifndef MAP_ANONYMOUS |
14 | # define MAP_ANON MAP_ANONYMOUS |
30 | # ifdef MAP_ANON |
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31 | # define MAP_ANONYMOUS MAP_ANON |
15 | # else |
32 | # else |
16 | # undef HAVE_MMAP |
33 | # undef HAVE_MMAP |
17 | # endif |
34 | # endif |
18 | # endif |
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 |
19 | #endif |
43 | # endif |
20 | |
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21 | #define MAY_FLUSH /* increases codesize */ |
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22 | |
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23 | /* perl-related */ |
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24 | #define TRANSFER_SAVE_DEFAV 0x00000001 |
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25 | #define TRANSFER_SAVE_DEFSV 0x00000002 |
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26 | #define TRANSFER_SAVE_ERRSV 0x00000004 |
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27 | /* c-related */ |
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28 | #define TRANSFER_SAVE_CCTXT 0x00000008 |
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29 | #ifdef CORO_LAZY_STACK |
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30 | # define TRANSFER_LAZY_STACK 0x00000010 |
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31 | #else |
44 | #else |
32 | # define TRANSFER_LAZY_STACK 0x00000000 |
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) && PERLSUBVERSION >= (c))))) |
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61 | |
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62 | #if !PERL_VERSION_ATLEAST (5,6,0) |
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63 | # ifndef PL_ppaddr |
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64 | # define PL_ppaddr ppaddr |
33 | #endif |
65 | # endif |
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66 | # ifndef call_sv |
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67 | # define call_sv perl_call_sv |
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68 | # endif |
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69 | # ifndef get_sv |
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70 | # define get_sv perl_get_sv |
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71 | # endif |
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72 | # ifndef get_cv |
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73 | # define get_cv perl_get_cv |
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74 | # endif |
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75 | # ifndef IS_PADGV |
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76 | # define IS_PADGV(v) 0 |
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77 | # endif |
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78 | # ifndef IS_PADCONST |
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79 | # define IS_PADCONST(v) 0 |
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80 | # endif |
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81 | #endif |
34 | |
82 | |
35 | #define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV|TRANSFER_SAVE_DEFSV \ |
83 | /* 5.11 */ |
36 | |TRANSFER_SAVE_ERRSV|TRANSFER_SAVE_CCTXT) |
84 | #ifndef CxHASARGS |
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85 | # define CxHASARGS(cx) (cx)->blk_sub.hasargs |
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86 | #endif |
37 | |
87 | |
38 | #define SUB_INIT "Coro::State::initialize" |
88 | /* 5.10.0 */ |
39 | #define UCORO_STATE "_coro_state" |
89 | #ifndef SvREFCNT_inc_NN |
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90 | # define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) |
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91 | #endif |
40 | |
92 | |
41 | /* The next macro should delcare a variable stacklevel that contains and approximation |
93 | /* 5.8.8 */ |
42 | * to the current C stack pointer. It's property is that it changes with each call |
94 | #ifndef GV_NOTQUAL |
43 | * and should be unique. */ |
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 | |
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101 | /* 5.8.7 */ |
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102 | #ifndef SvRV_set |
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103 | # define SvRV_set(s,v) SvRV(s) = (v) |
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104 | #endif |
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105 | |
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106 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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107 | # undef CORO_STACKGUARD |
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108 | #endif |
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109 | |
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110 | #ifndef CORO_STACKGUARD |
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111 | # define CORO_STACKGUARD 0 |
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112 | #endif |
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113 | |
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114 | /* prefer perl internal functions over our own? */ |
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115 | #ifndef CORO_PREFER_PERL_FUNCTIONS |
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116 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
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117 | #endif |
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118 | |
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119 | /* The next macros try to return the current stack pointer, in an as |
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120 | * portable way as possible. */ |
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121 | #if __GNUC__ >= 4 |
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122 | # define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) |
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123 | #else |
44 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
124 | # define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel |
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125 | #endif |
45 | |
126 | |
46 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
127 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
47 | |
128 | |
48 | /* this is actually not only the c stack but also c registers etc... */ |
129 | #if __GNUC__ >= 3 |
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130 | # define attribute(x) __attribute__(x) |
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131 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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132 | # define INLINE static inline |
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133 | #else |
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134 | # define attribute(x) |
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135 | # define expect(expr,value) (expr) |
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136 | # define INLINE static |
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137 | #endif |
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138 | |
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139 | #define expect_false(expr) expect ((expr) != 0, 0) |
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140 | #define expect_true(expr) expect ((expr) != 0, 1) |
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141 | |
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142 | #define NOINLINE attribute ((noinline)) |
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143 | |
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144 | #include "CoroAPI.h" |
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145 | |
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146 | #ifdef USE_ITHREADS |
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147 | # if CORO_PTHREAD |
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148 | static void *coro_thx; |
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149 | # endif |
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150 | #endif |
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151 | |
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152 | /* helper storage struct for Coro::AIO */ |
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153 | struct io_state |
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154 | { |
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155 | AV *res; |
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156 | int errorno; |
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157 | I32 laststype; /* U16 in 5.10.0 */ |
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158 | int laststatval; |
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159 | Stat_t statcache; |
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160 | }; |
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161 | |
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162 | static double (*nvtime)(); /* so why doesn't it take void? */ |
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163 | |
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164 | static U32 cctx_gen; |
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165 | static size_t cctx_stacksize = CORO_STACKSIZE; |
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166 | static struct CoroAPI coroapi; |
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167 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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168 | static JMPENV *main_top_env; |
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169 | static HV *coro_state_stash, *coro_stash; |
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170 | static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
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171 | |
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172 | static GV *irsgv; /* $/ */ |
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173 | static GV *stdoutgv; /* *STDOUT */ |
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174 | static SV *rv_diehook; |
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175 | static SV *rv_warnhook; |
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176 | static HV *hv_sig; /* %SIG */ |
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177 | |
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178 | /* async_pool helper stuff */ |
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179 | static SV *sv_pool_rss; |
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180 | static SV *sv_pool_size; |
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181 | static AV *av_async_pool; |
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182 | |
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183 | /* Coro::AnyEvent */ |
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184 | static SV *sv_activity; |
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185 | |
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186 | static struct coro_cctx *cctx_first; |
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187 | static int cctx_count, cctx_idle; |
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188 | |
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189 | enum { |
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190 | CC_MAPPED = 0x01, |
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191 | CC_NOREUSE = 0x02, /* throw this away after tracing */ |
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192 | CC_TRACE = 0x04, |
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193 | CC_TRACE_SUB = 0x08, /* trace sub calls */ |
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194 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
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195 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
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196 | }; |
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197 | |
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198 | /* this is a structure representing a c-level coroutine */ |
49 | typedef struct { |
199 | typedef struct coro_cctx |
50 | int refcnt; /* pointer reference counter */ |
200 | { |
51 | int usecnt; /* shared by how many coroutines */ |
201 | struct coro_cctx *next; |
52 | int gencnt; /* generation counter */ |
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53 | |
202 | |
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203 | /* the stack */ |
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204 | void *sptr; |
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205 | size_t ssize; |
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206 | |
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207 | /* cpu state */ |
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208 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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209 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
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210 | JMPENV *top_env; |
54 | coro_context cctx; |
211 | coro_context cctx; |
55 | |
212 | |
56 | void *sptr; |
213 | U32 gen; |
57 | long ssize; /* positive == mmap, otherwise malloc */ |
214 | #if CORO_USE_VALGRIND |
58 | } coro_stack; |
215 | int valgrind_id; |
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216 | #endif |
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217 | unsigned char flags; |
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218 | } coro_cctx; |
59 | |
219 | |
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220 | enum { |
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221 | CF_RUNNING = 0x0001, /* coroutine is running */ |
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222 | CF_READY = 0x0002, /* coroutine is ready */ |
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223 | CF_NEW = 0x0004, /* has never been switched to */ |
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224 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
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225 | }; |
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226 | |
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227 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
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228 | typedef struct |
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229 | { |
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230 | SV *defsv; |
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231 | AV *defav; |
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232 | SV *errsv; |
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233 | SV *irsgv; |
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234 | #define VAR(name,type) type name; |
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235 | # include "state.h" |
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236 | #undef VAR |
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237 | } perl_slots; |
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238 | |
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239 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
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240 | |
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241 | /* this is a structure representing a perl-level coroutine */ |
60 | struct coro { |
242 | struct coro { |
61 | /* the optional C context */ |
243 | /* the C coroutine allocated to this perl coroutine, if any */ |
62 | coro_stack *stack; |
244 | coro_cctx *cctx; |
63 | void *cursp; |
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64 | int gencnt; |
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65 | |
245 | |
66 | /* optionally saved, might be zero */ |
246 | /* state data */ |
67 | AV *defav; |
247 | struct CoroSLF slf_frame; /* saved slf frame */ |
68 | SV *defsv; |
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69 | SV *errsv; |
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70 | |
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71 | /* saved global state not related to stacks */ |
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72 | U8 dowarn; |
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73 | I32 in_eval; |
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74 | |
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75 | /* the stacks and related info (callchain etc..) */ |
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76 | PERL_SI *curstackinfo; |
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77 | AV *curstack; |
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78 | AV *mainstack; |
248 | AV *mainstack; |
79 | SV **stack_sp; |
249 | perl_slots *slot; /* basically the saved sp */ |
80 | OP *op; |
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81 | SV **curpad; |
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82 | SV **stack_base; |
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83 | SV **stack_max; |
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84 | SV **tmps_stack; |
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85 | I32 tmps_floor; |
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86 | I32 tmps_ix; |
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87 | I32 tmps_max; |
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88 | I32 *markstack; |
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89 | I32 *markstack_ptr; |
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90 | I32 *markstack_max; |
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91 | I32 *scopestack; |
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92 | I32 scopestack_ix; |
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93 | I32 scopestack_max; |
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94 | ANY *savestack; |
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95 | I32 savestack_ix; |
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96 | I32 savestack_max; |
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97 | OP **retstack; |
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98 | I32 retstack_ix; |
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99 | I32 retstack_max; |
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100 | COP *curcop; |
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101 | JMPENV *top_env; |
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102 | |
250 | |
103 | /* data associated with this coroutine (initial args) */ |
251 | AV *args; /* data associated with this coroutine (initial args) */ |
104 | AV *args; |
252 | int refcnt; /* coroutines are refcounted, yes */ |
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253 | int flags; /* CF_ flags */ |
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254 | HV *hv; /* the perl hash associated with this coro, if any */ |
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255 | void (*on_destroy)(pTHX_ struct coro *coro); |
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256 | |
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257 | /* statistics */ |
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258 | int usecount; /* number of transfers to this coro */ |
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259 | |
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260 | /* coro process data */ |
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261 | int prio; |
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262 | SV *throw; /* exception to be thrown */ |
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263 | |
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264 | /* async_pool */ |
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265 | SV *saved_deffh; |
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266 | |
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267 | /* linked list */ |
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268 | struct coro *next, *prev; |
105 | }; |
269 | }; |
106 | |
270 | |
107 | typedef struct coro *Coro__State; |
271 | typedef struct coro *Coro__State; |
108 | typedef struct coro *Coro__State_or_hashref; |
272 | typedef struct coro *Coro__State_or_hashref; |
109 | |
273 | |
110 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
274 | /* the following variables are effectively part of the perl context */ |
111 | static HV *coro_state_stash; |
275 | /* and get copied between struct coro and these variables */ |
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276 | /* the mainr easonw e don't support windows process emulation */ |
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277 | static struct CoroSLF slf_frame; /* the current slf frame */ |
112 | static SV *ucoro_state_sv; |
278 | static SV *coro_throw; |
113 | static U32 ucoro_state_hash; |
279 | |
114 | static HV *padlist_cache; |
280 | /** Coro ********************************************************************/ |
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281 | |
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282 | #define PRIO_MAX 3 |
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283 | #define PRIO_HIGH 1 |
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284 | #define PRIO_NORMAL 0 |
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285 | #define PRIO_LOW -1 |
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286 | #define PRIO_IDLE -3 |
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287 | #define PRIO_MIN -4 |
115 | |
288 | |
116 | /* for Coro.pm */ |
289 | /* for Coro.pm */ |
117 | static GV *coro_current, *coro_idle; |
290 | static SV *coro_current; |
118 | static AV *coro_ready; |
291 | static SV *coro_readyhook; |
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292 | static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; |
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293 | static struct coro *coro_first; |
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294 | #define coro_nready coroapi.nready |
119 | |
295 | |
120 | /* mostly copied from op.c:cv_clone2 */ |
296 | /** lowlevel stuff **********************************************************/ |
121 | STATIC AV * |
297 | |
122 | clone_padlist (AV *protopadlist) |
298 | static SV * |
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299 | coro_get_sv (pTHX_ const char *name, int create) |
123 | { |
300 | { |
124 | AV *av; |
301 | #if PERL_VERSION_ATLEAST (5,10,0) |
125 | I32 ix; |
302 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
126 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
303 | get_sv (name, create); |
127 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
304 | #endif |
128 | SV **pname = AvARRAY (protopad_name); |
305 | return get_sv (name, create); |
129 | SV **ppad = AvARRAY (protopad); |
306 | } |
130 | I32 fname = AvFILLp (protopad_name); |
307 | |
131 | I32 fpad = AvFILLp (protopad); |
308 | static AV * |
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309 | coro_get_av (pTHX_ const char *name, int create) |
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310 | { |
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311 | #if PERL_VERSION_ATLEAST (5,10,0) |
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312 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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313 | get_av (name, create); |
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314 | #endif |
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315 | return get_av (name, create); |
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316 | } |
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317 | |
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318 | static HV * |
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319 | coro_get_hv (pTHX_ const char *name, int create) |
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320 | { |
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321 | #if PERL_VERSION_ATLEAST (5,10,0) |
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322 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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323 | get_hv (name, create); |
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324 | #endif |
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325 | return get_hv (name, create); |
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326 | } |
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327 | |
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328 | static AV * |
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329 | coro_clone_padlist (pTHX_ CV *cv) |
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330 | { |
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331 | AV *padlist = CvPADLIST (cv); |
132 | AV *newpadlist, *newpad_name, *newpad; |
332 | AV *newpadlist, *newpad; |
133 | SV **npad; |
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134 | |
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135 | newpad_name = newAV (); |
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136 | for (ix = fname; ix >= 0; ix--) |
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137 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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138 | |
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139 | newpad = newAV (); |
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140 | av_fill (newpad, AvFILLp (protopad)); |
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141 | npad = AvARRAY (newpad); |
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142 | |
333 | |
143 | newpadlist = newAV (); |
334 | newpadlist = newAV (); |
144 | AvREAL_off (newpadlist); |
335 | AvREAL_off (newpadlist); |
145 | av_store (newpadlist, 0, (SV *) newpad_name); |
336 | #if PERL_VERSION_ATLEAST (5,10,0) |
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337 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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338 | #else |
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339 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
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340 | #endif |
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341 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
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342 | --AvFILLp (padlist); |
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343 | |
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344 | av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); |
146 | av_store (newpadlist, 1, (SV *) newpad); |
345 | av_store (newpadlist, 1, (SV *)newpad); |
147 | |
346 | |
148 | av = newAV (); /* will be @_ */ |
347 | return newpadlist; |
149 | av_extend (av, 0); |
348 | } |
150 | av_store (newpad, 0, (SV *) av); |
|
|
151 | AvFLAGS (av) = AVf_REIFY; |
|
|
152 | |
349 | |
153 | for (ix = fpad; ix > 0; ix--) |
350 | static void |
|
|
351 | free_padlist (pTHX_ AV *padlist) |
|
|
352 | { |
|
|
353 | /* may be during global destruction */ |
|
|
354 | if (SvREFCNT (padlist)) |
154 | { |
355 | { |
155 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
356 | I32 i = AvFILLp (padlist); |
156 | if (namesv && namesv != &PL_sv_undef) |
357 | while (i >= 0) |
157 | { |
358 | { |
158 | char *name = SvPVX (namesv); /* XXX */ |
359 | SV **svp = av_fetch (padlist, i--, FALSE); |
159 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
360 | if (svp) |
160 | { /* lexical from outside? */ |
|
|
161 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
|
|
162 | } |
361 | { |
163 | else |
|
|
164 | { /* our own lexical */ |
|
|
165 | SV *sv; |
362 | SV *sv; |
166 | if (*name == '&') |
363 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
167 | sv = SvREFCNT_inc (ppad[ix]); |
364 | SvREFCNT_dec (sv); |
168 | else if (*name == '@') |
365 | |
169 | sv = (SV *) newAV (); |
366 | SvREFCNT_dec (*svp); |
170 | else if (*name == '%') |
|
|
171 | sv = (SV *) newHV (); |
|
|
172 | else |
|
|
173 | sv = NEWSV (0, 0); |
|
|
174 | if (!SvPADBUSY (sv)) |
|
|
175 | SvPADMY_on (sv); |
|
|
176 | npad[ix] = sv; |
|
|
177 | } |
367 | } |
178 | } |
368 | } |
179 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
|
|
180 | { |
|
|
181 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
|
|
182 | } |
|
|
183 | else |
|
|
184 | { |
|
|
185 | SV *sv = NEWSV (0, 0); |
|
|
186 | SvPADTMP_on (sv); |
|
|
187 | npad[ix] = sv; |
|
|
188 | } |
|
|
189 | } |
|
|
190 | |
369 | |
191 | #if 0 /* return -ENOTUNDERSTOOD */ |
|
|
192 | /* Now that vars are all in place, clone nested closures. */ |
|
|
193 | |
|
|
194 | for (ix = fpad; ix > 0; ix--) { |
|
|
195 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
|
|
196 | if (namesv |
|
|
197 | && namesv != &PL_sv_undef |
|
|
198 | && !(SvFLAGS(namesv) & SVf_FAKE) |
|
|
199 | && *SvPVX(namesv) == '&' |
|
|
200 | && CvCLONE(ppad[ix])) |
|
|
201 | { |
|
|
202 | CV *kid = cv_clone((CV*)ppad[ix]); |
|
|
203 | SvREFCNT_dec(ppad[ix]); |
|
|
204 | CvCLONE_on(kid); |
|
|
205 | SvPADMY_on(kid); |
|
|
206 | npad[ix] = (SV*)kid; |
|
|
207 | } |
|
|
208 | } |
|
|
209 | #endif |
|
|
210 | |
|
|
211 | return newpadlist; |
|
|
212 | } |
|
|
213 | |
|
|
214 | #ifdef MAY_FLUSH |
|
|
215 | STATIC AV * |
|
|
216 | free_padlist (AV *padlist) |
|
|
217 | { |
|
|
218 | /* may be during global destruction */ |
|
|
219 | if (SvREFCNT(padlist)) |
|
|
220 | { |
|
|
221 | I32 i = AvFILLp(padlist); |
|
|
222 | while (i >= 0) |
|
|
223 | { |
|
|
224 | SV **svp = av_fetch(padlist, i--, FALSE); |
|
|
225 | SV *sv = svp ? *svp : Nullsv; |
|
|
226 | if (sv) |
|
|
227 | SvREFCNT_dec(sv); |
|
|
228 | } |
|
|
229 | |
|
|
230 | SvREFCNT_dec((SV*)padlist); |
370 | SvREFCNT_dec ((SV*)padlist); |
231 | } |
371 | } |
232 | } |
372 | } |
233 | #endif |
373 | |
|
|
374 | static int |
|
|
375 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
376 | { |
|
|
377 | AV *padlist; |
|
|
378 | AV *av = (AV *)mg->mg_obj; |
|
|
379 | |
|
|
380 | /* casting is fun. */ |
|
|
381 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
|
|
382 | free_padlist (aTHX_ padlist); |
|
|
383 | |
|
|
384 | SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
|
|
385 | |
|
|
386 | return 0; |
|
|
387 | } |
|
|
388 | |
|
|
389 | #define CORO_MAGIC_type_cv PERL_MAGIC_ext |
|
|
390 | #define CORO_MAGIC_type_state PERL_MAGIC_ext |
|
|
391 | |
|
|
392 | static MGVTBL coro_cv_vtbl = { |
|
|
393 | 0, 0, 0, 0, |
|
|
394 | coro_cv_free |
|
|
395 | }; |
|
|
396 | |
|
|
397 | #define CORO_MAGIC(sv, type) \ |
|
|
398 | expect_true (SvMAGIC (sv)) \ |
|
|
399 | ? expect_true (SvMAGIC (sv)->mg_type == type) \ |
|
|
400 | ? SvMAGIC (sv) \ |
|
|
401 | : mg_find (sv, type) \ |
|
|
402 | : 0 |
|
|
403 | |
|
|
404 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
|
|
405 | #define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) |
|
|
406 | |
|
|
407 | INLINE struct coro * |
|
|
408 | SvSTATE_ (pTHX_ SV *coro) |
|
|
409 | { |
|
|
410 | HV *stash; |
|
|
411 | MAGIC *mg; |
|
|
412 | |
|
|
413 | if (SvROK (coro)) |
|
|
414 | coro = SvRV (coro); |
|
|
415 | |
|
|
416 | if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
|
|
417 | croak ("Coro::State object required"); |
|
|
418 | |
|
|
419 | stash = SvSTASH (coro); |
|
|
420 | if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
|
|
421 | { |
|
|
422 | /* very slow, but rare, check */ |
|
|
423 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
424 | croak ("Coro::State object required"); |
|
|
425 | } |
|
|
426 | |
|
|
427 | mg = CORO_MAGIC_state (coro); |
|
|
428 | return (struct coro *)mg->mg_ptr; |
|
|
429 | } |
|
|
430 | |
|
|
431 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
|
|
432 | |
|
|
433 | /* fastert than SvSTATE, but expects a coroutine hv */ |
|
|
434 | INLINE struct coro * |
|
|
435 | SvSTATE_hv (SV *sv) |
|
|
436 | { |
|
|
437 | MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state) |
|
|
438 | ? SvMAGIC (sv) |
|
|
439 | : mg_find (sv, CORO_MAGIC_type_state); |
|
|
440 | |
|
|
441 | return (struct coro *)mg->mg_ptr; |
|
|
442 | } |
|
|
443 | |
|
|
444 | #define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
234 | |
445 | |
235 | /* the next two functions merely cache the padlists */ |
446 | /* the next two functions merely cache the padlists */ |
236 | STATIC void |
447 | static void |
237 | get_padlist (CV *cv) |
448 | get_padlist (pTHX_ CV *cv) |
238 | { |
449 | { |
239 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
450 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
451 | AV *av; |
240 | |
452 | |
241 | if (he && AvFILLp ((AV *)*he) >= 0) |
453 | if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
242 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
454 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
243 | else |
455 | else |
244 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
|
|
245 | } |
|
|
246 | |
|
|
247 | STATIC void |
|
|
248 | put_padlist (CV *cv) |
|
|
249 | { |
|
|
250 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
|
|
251 | |
|
|
252 | if (SvTYPE (*he) != SVt_PVAV) |
|
|
253 | { |
456 | { |
|
|
457 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
458 | /* this is probably cleaner? but also slower! */ |
|
|
459 | /* in practise, it seems to be less stable */ |
|
|
460 | CV *cp = Perl_cv_clone (cv); |
|
|
461 | CvPADLIST (cv) = CvPADLIST (cp); |
|
|
462 | CvPADLIST (cp) = 0; |
254 | SvREFCNT_dec (*he); |
463 | SvREFCNT_dec (cp); |
255 | *he = (SV *)newAV (); |
464 | #else |
|
|
465 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
|
|
466 | #endif |
256 | } |
467 | } |
257 | |
|
|
258 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
|
|
259 | } |
468 | } |
260 | |
469 | |
261 | #ifdef MAY_FLUSH |
|
|
262 | STATIC void |
|
|
263 | flush_padlist_cache () |
|
|
264 | { |
|
|
265 | HV *hv = padlist_cache; |
|
|
266 | padlist_cache = newHV (); |
|
|
267 | |
|
|
268 | if (hv_iterinit (hv)) |
|
|
269 | { |
|
|
270 | HE *he; |
|
|
271 | AV *padlist; |
|
|
272 | |
|
|
273 | while (!!(he = hv_iternext (hv))) |
|
|
274 | { |
|
|
275 | AV *av = (AV *)HeVAL(he); |
|
|
276 | |
|
|
277 | /* casting is fun. */ |
|
|
278 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
|
|
279 | free_padlist (padlist); |
|
|
280 | } |
|
|
281 | } |
|
|
282 | |
|
|
283 | SvREFCNT_dec (hv); |
|
|
284 | } |
|
|
285 | #endif |
|
|
286 | |
|
|
287 | #define SB do { |
|
|
288 | #define SE } while (0) |
|
|
289 | |
|
|
290 | #define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE |
|
|
291 | #define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE |
|
|
292 | |
|
|
293 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
|
|
294 | |
|
|
295 | static void |
470 | static void |
|
|
471 | put_padlist (pTHX_ CV *cv) |
|
|
472 | { |
|
|
473 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
474 | AV *av; |
|
|
475 | |
|
|
476 | if (expect_false (!mg)) |
|
|
477 | mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
|
|
478 | |
|
|
479 | av = (AV *)mg->mg_obj; |
|
|
480 | |
|
|
481 | if (expect_false (AvFILLp (av) >= AvMAX (av))) |
|
|
482 | av_extend (av, AvMAX (av) + 1); |
|
|
483 | |
|
|
484 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
|
|
485 | } |
|
|
486 | |
|
|
487 | /** load & save, init *******************************************************/ |
|
|
488 | |
|
|
489 | static void |
296 | load_state(pTHX_ Coro__State c) |
490 | load_perl (pTHX_ Coro__State c) |
297 | { |
491 | { |
298 | PL_dowarn = c->dowarn; |
492 | perl_slots *slot = c->slot; |
299 | PL_in_eval = c->in_eval; |
493 | c->slot = 0; |
300 | |
494 | |
301 | PL_curstackinfo = c->curstackinfo; |
|
|
302 | PL_curstack = c->curstack; |
|
|
303 | PL_mainstack = c->mainstack; |
495 | PL_mainstack = c->mainstack; |
304 | PL_stack_sp = c->stack_sp; |
|
|
305 | PL_op = c->op; |
|
|
306 | PL_curpad = c->curpad; |
|
|
307 | PL_stack_base = c->stack_base; |
|
|
308 | PL_stack_max = c->stack_max; |
|
|
309 | PL_tmps_stack = c->tmps_stack; |
|
|
310 | PL_tmps_floor = c->tmps_floor; |
|
|
311 | PL_tmps_ix = c->tmps_ix; |
|
|
312 | PL_tmps_max = c->tmps_max; |
|
|
313 | PL_markstack = c->markstack; |
|
|
314 | PL_markstack_ptr = c->markstack_ptr; |
|
|
315 | PL_markstack_max = c->markstack_max; |
|
|
316 | PL_scopestack = c->scopestack; |
|
|
317 | PL_scopestack_ix = c->scopestack_ix; |
|
|
318 | PL_scopestack_max = c->scopestack_max; |
|
|
319 | PL_savestack = c->savestack; |
|
|
320 | PL_savestack_ix = c->savestack_ix; |
|
|
321 | PL_savestack_max = c->savestack_max; |
|
|
322 | PL_retstack = c->retstack; |
|
|
323 | PL_retstack_ix = c->retstack_ix; |
|
|
324 | PL_retstack_max = c->retstack_max; |
|
|
325 | PL_curcop = c->curcop; |
|
|
326 | PL_top_env = c->top_env; |
|
|
327 | |
496 | |
328 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
497 | GvSV (PL_defgv) = slot->defsv; |
329 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
498 | GvAV (PL_defgv) = slot->defav; |
330 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
499 | GvSV (PL_errgv) = slot->errsv; |
|
|
500 | GvSV (irsgv) = slot->irsgv; |
|
|
501 | |
|
|
502 | #define VAR(name,type) PL_ ## name = slot->name; |
|
|
503 | # include "state.h" |
|
|
504 | #undef VAR |
331 | |
505 | |
332 | { |
506 | { |
333 | dSP; |
507 | dSP; |
|
|
508 | |
334 | CV *cv; |
509 | CV *cv; |
335 | |
510 | |
336 | /* now do the ugly restore mess */ |
511 | /* now do the ugly restore mess */ |
337 | while ((cv = (CV *)POPs)) |
512 | while (expect_true (cv = (CV *)POPs)) |
338 | { |
513 | { |
339 | AV *padlist = (AV *)POPs; |
|
|
340 | |
|
|
341 | if (padlist) |
|
|
342 | { |
|
|
343 | put_padlist (cv); /* mark this padlist as available */ |
514 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
344 | CvPADLIST(cv) = padlist; |
515 | CvDEPTH (cv) = PTR2IV (POPs); |
345 | #ifdef USE_THREADS |
516 | CvPADLIST (cv) = (AV *)POPs; |
346 | /*CvOWNER(cv) = (struct perl_thread *)POPs;*/ |
|
|
347 | #endif |
|
|
348 | } |
|
|
349 | |
|
|
350 | ++CvDEPTH(cv); |
|
|
351 | } |
517 | } |
352 | |
518 | |
353 | PUTBACK; |
519 | PUTBACK; |
354 | } |
520 | } |
355 | } |
|
|
356 | |
521 | |
|
|
522 | slf_frame = c->slf_frame; |
|
|
523 | coro_throw = c->throw; |
|
|
524 | } |
|
|
525 | |
357 | static void |
526 | static void |
358 | save_state(pTHX_ Coro__State c, int flags) |
527 | save_perl (pTHX_ Coro__State c) |
359 | { |
528 | { |
|
|
529 | c->throw = coro_throw; |
|
|
530 | c->slf_frame = slf_frame; |
|
|
531 | |
360 | { |
532 | { |
361 | dSP; |
533 | dSP; |
362 | I32 cxix = cxstack_ix; |
534 | I32 cxix = cxstack_ix; |
363 | PERL_CONTEXT *ccstk = cxstack; |
535 | PERL_CONTEXT *ccstk = cxstack; |
364 | PERL_SI *top_si = PL_curstackinfo; |
536 | PERL_SI *top_si = PL_curstackinfo; |
… | |
… | |
366 | /* |
538 | /* |
367 | * the worst thing you can imagine happens first - we have to save |
539 | * the worst thing you can imagine happens first - we have to save |
368 | * (and reinitialize) all cv's in the whole callchain :( |
540 | * (and reinitialize) all cv's in the whole callchain :( |
369 | */ |
541 | */ |
370 | |
542 | |
371 | PUSHs (Nullsv); |
543 | XPUSHs (Nullsv); |
372 | /* this loop was inspired by pp_caller */ |
544 | /* this loop was inspired by pp_caller */ |
373 | for (;;) |
545 | for (;;) |
374 | { |
546 | { |
375 | do |
547 | while (expect_true (cxix >= 0)) |
376 | { |
548 | { |
377 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
549 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
378 | |
550 | |
379 | if (CxTYPE(cx) == CXt_SUB) |
551 | if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) |
380 | { |
552 | { |
381 | CV *cv = cx->blk_sub.cv; |
553 | CV *cv = cx->blk_sub.cv; |
|
|
554 | |
382 | if (CvDEPTH(cv)) |
555 | if (expect_true (CvDEPTH (cv))) |
383 | { |
556 | { |
384 | #ifdef USE_THREADS |
|
|
385 | /*XPUSHs ((SV *)CvOWNER(cv));*/ |
|
|
386 | /*CvOWNER(cv) = 0;*/ |
|
|
387 | /*error must unlock this cv etc.. etc...*/ |
|
|
388 | #endif |
|
|
389 | EXTEND (SP, CvDEPTH(cv)*2); |
557 | EXTEND (SP, 3); |
390 | |
|
|
391 | while (--CvDEPTH(cv)) |
|
|
392 | { |
|
|
393 | /* this tells the restore code to increment CvDEPTH */ |
|
|
394 | PUSHs (Nullsv); |
|
|
395 | PUSHs ((SV *)cv); |
|
|
396 | } |
|
|
397 | |
|
|
398 | PUSHs ((SV *)CvPADLIST(cv)); |
558 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
559 | PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
399 | PUSHs ((SV *)cv); |
560 | PUSHs ((SV *)cv); |
400 | |
561 | |
401 | get_padlist (cv); /* this is a monster */ |
562 | CvDEPTH (cv) = 0; |
|
|
563 | get_padlist (aTHX_ cv); |
402 | } |
564 | } |
403 | } |
565 | } |
404 | else if (CxTYPE(cx) == CXt_FORMAT) |
|
|
405 | { |
|
|
406 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
407 | /* my bold guess is as a simple, plain sub... */ |
|
|
408 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
409 | } |
|
|
410 | } |
566 | } |
411 | while (cxix >= 0); |
|
|
412 | |
567 | |
413 | if (top_si->si_type == PERLSI_MAIN) |
568 | if (expect_true (top_si->si_type == PERLSI_MAIN)) |
414 | break; |
569 | break; |
415 | |
570 | |
416 | top_si = top_si->si_prev; |
571 | top_si = top_si->si_prev; |
417 | ccstk = top_si->si_cxstack; |
572 | ccstk = top_si->si_cxstack; |
418 | cxix = top_si->si_cxix; |
573 | cxix = top_si->si_cxix; |
419 | } |
574 | } |
420 | |
575 | |
421 | PUTBACK; |
576 | PUTBACK; |
422 | } |
577 | } |
423 | |
578 | |
424 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
579 | /* allocate some space on the context stack for our purposes */ |
425 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
580 | /* we manually unroll here, as usually 2 slots is enough */ |
426 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
581 | if (SLOT_COUNT >= 1) CXINC; |
|
|
582 | if (SLOT_COUNT >= 2) CXINC; |
|
|
583 | if (SLOT_COUNT >= 3) CXINC; |
|
|
584 | { |
|
|
585 | int i; |
|
|
586 | for (i = 3; i < SLOT_COUNT; ++i) |
|
|
587 | CXINC; |
|
|
588 | } |
|
|
589 | cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
427 | |
590 | |
428 | /* I have not the slightest idea of why av_reify is necessary */ |
|
|
429 | /* but if it's missing the defav contents magically get replaced sometimes */ |
|
|
430 | if (c->defav) |
|
|
431 | av_reify (c->defav); |
|
|
432 | |
|
|
433 | c->dowarn = PL_dowarn; |
|
|
434 | c->in_eval = PL_in_eval; |
|
|
435 | |
|
|
436 | c->curstackinfo = PL_curstackinfo; |
|
|
437 | c->curstack = PL_curstack; |
|
|
438 | c->mainstack = PL_mainstack; |
591 | c->mainstack = PL_mainstack; |
439 | c->stack_sp = PL_stack_sp; |
592 | |
440 | c->op = PL_op; |
593 | { |
441 | c->curpad = PL_curpad; |
594 | perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
442 | c->stack_base = PL_stack_base; |
595 | |
443 | c->stack_max = PL_stack_max; |
596 | slot->defav = GvAV (PL_defgv); |
444 | c->tmps_stack = PL_tmps_stack; |
597 | slot->defsv = DEFSV; |
445 | c->tmps_floor = PL_tmps_floor; |
598 | slot->errsv = ERRSV; |
446 | c->tmps_ix = PL_tmps_ix; |
599 | slot->irsgv = GvSV (irsgv); |
447 | c->tmps_max = PL_tmps_max; |
600 | |
448 | c->markstack = PL_markstack; |
601 | #define VAR(name,type) slot->name = PL_ ## name; |
449 | c->markstack_ptr = PL_markstack_ptr; |
602 | # include "state.h" |
450 | c->markstack_max = PL_markstack_max; |
603 | #undef VAR |
451 | c->scopestack = PL_scopestack; |
604 | } |
452 | c->scopestack_ix = PL_scopestack_ix; |
|
|
453 | c->scopestack_max = PL_scopestack_max; |
|
|
454 | c->savestack = PL_savestack; |
|
|
455 | c->savestack_ix = PL_savestack_ix; |
|
|
456 | c->savestack_max = PL_savestack_max; |
|
|
457 | c->retstack = PL_retstack; |
|
|
458 | c->retstack_ix = PL_retstack_ix; |
|
|
459 | c->retstack_max = PL_retstack_max; |
|
|
460 | c->curcop = PL_curcop; |
|
|
461 | c->top_env = PL_top_env; |
|
|
462 | } |
605 | } |
463 | |
606 | |
464 | /* |
607 | /* |
465 | * allocate various perl stacks. This is an exact copy |
608 | * allocate various perl stacks. This is almost an exact copy |
466 | * of perl.c:init_stacks, except that it uses less memory |
609 | * of perl.c:init_stacks, except that it uses less memory |
467 | * on the assumption that coroutines do not usually need |
610 | * on the (sometimes correct) assumption that coroutines do |
468 | * a lot of stackspace. |
611 | * not usually need a lot of stackspace. |
469 | */ |
612 | */ |
470 | STATIC void |
613 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
614 | # define coro_init_stacks init_stacks |
|
|
615 | #else |
|
|
616 | static void |
471 | coro_init_stacks (pTHX) |
617 | coro_init_stacks (pTHX) |
472 | { |
618 | { |
473 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
619 | PL_curstackinfo = new_stackinfo(32, 8); |
474 | PL_curstackinfo->si_type = PERLSI_MAIN; |
620 | PL_curstackinfo->si_type = PERLSI_MAIN; |
475 | PL_curstack = PL_curstackinfo->si_stack; |
621 | PL_curstack = PL_curstackinfo->si_stack; |
476 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
622 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
477 | |
623 | |
478 | PL_stack_base = AvARRAY(PL_curstack); |
624 | PL_stack_base = AvARRAY(PL_curstack); |
479 | PL_stack_sp = PL_stack_base; |
625 | PL_stack_sp = PL_stack_base; |
480 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
626 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
481 | |
627 | |
482 | New(50,PL_tmps_stack,96,SV*); |
628 | New(50,PL_tmps_stack,32,SV*); |
483 | PL_tmps_floor = -1; |
629 | PL_tmps_floor = -1; |
484 | PL_tmps_ix = -1; |
630 | PL_tmps_ix = -1; |
485 | PL_tmps_max = 96; |
631 | PL_tmps_max = 32; |
486 | |
632 | |
487 | New(54,PL_markstack,16,I32); |
633 | New(54,PL_markstack,16,I32); |
488 | PL_markstack_ptr = PL_markstack; |
634 | PL_markstack_ptr = PL_markstack; |
489 | PL_markstack_max = PL_markstack + 16; |
635 | PL_markstack_max = PL_markstack + 16; |
490 | |
636 | |
|
|
637 | #ifdef SET_MARK_OFFSET |
491 | SET_MARK_OFFSET; |
638 | SET_MARK_OFFSET; |
|
|
639 | #endif |
492 | |
640 | |
493 | New(54,PL_scopestack,16,I32); |
641 | New(54,PL_scopestack,8,I32); |
494 | PL_scopestack_ix = 0; |
642 | PL_scopestack_ix = 0; |
495 | PL_scopestack_max = 16; |
643 | PL_scopestack_max = 8; |
496 | |
644 | |
497 | New(54,PL_savestack,96,ANY); |
645 | New(54,PL_savestack,24,ANY); |
498 | PL_savestack_ix = 0; |
646 | PL_savestack_ix = 0; |
499 | PL_savestack_max = 96; |
647 | PL_savestack_max = 24; |
500 | |
648 | |
|
|
649 | #if !PERL_VERSION_ATLEAST (5,10,0) |
501 | New(54,PL_retstack,8,OP*); |
650 | New(54,PL_retstack,4,OP*); |
502 | PL_retstack_ix = 0; |
651 | PL_retstack_ix = 0; |
503 | PL_retstack_max = 8; |
652 | PL_retstack_max = 4; |
|
|
653 | #endif |
504 | } |
654 | } |
|
|
655 | #endif |
505 | |
656 | |
506 | /* |
657 | /* |
507 | * destroy the stacks, the callchain etc... |
658 | * destroy the stacks, the callchain etc... |
508 | * still there is a memleak of 128 bytes... |
|
|
509 | */ |
659 | */ |
510 | STATIC void |
660 | static void |
511 | destroy_stacks(pTHX) |
661 | coro_destruct_stacks (pTHX) |
512 | { |
662 | { |
513 | /* is this ugly, I ask? */ |
|
|
514 | while (PL_scopestack_ix) |
|
|
515 | LEAVE; |
|
|
516 | |
|
|
517 | /* sure it is, but more important: is it correct?? :/ */ |
|
|
518 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
|
|
519 | FREETMPS; |
|
|
520 | |
|
|
521 | while (PL_curstackinfo->si_next) |
663 | while (PL_curstackinfo->si_next) |
522 | PL_curstackinfo = PL_curstackinfo->si_next; |
664 | PL_curstackinfo = PL_curstackinfo->si_next; |
523 | |
665 | |
524 | while (PL_curstackinfo) |
666 | while (PL_curstackinfo) |
525 | { |
667 | { |
526 | PERL_SI *p = PL_curstackinfo->si_prev; |
668 | PERL_SI *p = PL_curstackinfo->si_prev; |
527 | |
669 | |
528 | { |
670 | if (!IN_DESTRUCT) |
529 | dSP; |
|
|
530 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
531 | PUTBACK; /* possibly superfluous */ |
|
|
532 | } |
|
|
533 | |
|
|
534 | dounwind(-1); |
|
|
535 | |
|
|
536 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
671 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
|
|
672 | |
537 | Safefree(PL_curstackinfo->si_cxstack); |
673 | Safefree (PL_curstackinfo->si_cxstack); |
538 | Safefree(PL_curstackinfo); |
674 | Safefree (PL_curstackinfo); |
539 | PL_curstackinfo = p; |
675 | PL_curstackinfo = p; |
540 | } |
676 | } |
541 | |
677 | |
542 | Safefree(PL_tmps_stack); |
678 | Safefree (PL_tmps_stack); |
543 | Safefree(PL_markstack); |
679 | Safefree (PL_markstack); |
544 | Safefree(PL_scopestack); |
680 | Safefree (PL_scopestack); |
545 | Safefree(PL_savestack); |
681 | Safefree (PL_savestack); |
|
|
682 | #if !PERL_VERSION_ATLEAST (5,10,0) |
546 | Safefree(PL_retstack); |
683 | Safefree (PL_retstack); |
547 | } |
|
|
548 | |
|
|
549 | static void |
|
|
550 | allocate_stack (Coro__State ctx, int alloc) |
|
|
551 | { |
|
|
552 | coro_stack *stack; |
|
|
553 | |
|
|
554 | New (0, stack, 1, coro_stack); |
|
|
555 | |
|
|
556 | stack->refcnt = 1; |
|
|
557 | stack->usecnt = 1; |
|
|
558 | stack->gencnt = ctx->gencnt = 0; |
|
|
559 | if (alloc) |
|
|
560 | { |
|
|
561 | #ifdef HAVE_MMAP |
|
|
562 | stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
563 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0); |
|
|
564 | if (stack->sptr == (void *)-1) |
|
|
565 | #endif |
684 | #endif |
|
|
685 | } |
|
|
686 | |
|
|
687 | static size_t |
|
|
688 | coro_rss (pTHX_ struct coro *coro) |
|
|
689 | { |
|
|
690 | size_t rss = sizeof (*coro); |
|
|
691 | |
|
|
692 | if (coro->mainstack) |
|
|
693 | { |
|
|
694 | perl_slots tmp_slot; |
|
|
695 | perl_slots *slot; |
|
|
696 | |
|
|
697 | if (coro->flags & CF_RUNNING) |
566 | { |
698 | { |
567 | /*FIXME*//*D*//* reasonable stack size! */ |
699 | slot = &tmp_slot; |
568 | stack->ssize = -4096 * sizeof (long); |
700 | |
569 | New (0, stack->sptr, 4096, long); |
701 | #define VAR(name,type) slot->name = PL_ ## name; |
|
|
702 | # include "state.h" |
|
|
703 | #undef VAR |
570 | } |
704 | } |
571 | } |
|
|
572 | else |
705 | else |
573 | stack->sptr = 0; |
706 | slot = coro->slot; |
574 | |
707 | |
575 | ctx->stack = stack; |
708 | if (slot) |
576 | } |
|
|
577 | |
|
|
578 | static void |
|
|
579 | deallocate_stack (Coro__State ctx) |
|
|
580 | { |
|
|
581 | coro_stack *stack = ctx->stack; |
|
|
582 | |
|
|
583 | ctx->stack = 0; |
|
|
584 | |
|
|
585 | if (stack) |
|
|
586 | { |
|
|
587 | if (!--stack->refcnt) |
|
|
588 | { |
709 | { |
589 | #ifdef HAVE_MMAP |
710 | rss += sizeof (slot->curstackinfo); |
590 | if (stack->ssize > 0 && stack->sptr) |
711 | rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); |
591 | munmap (stack->sptr, stack->ssize); |
712 | rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); |
592 | else |
713 | rss += slot->tmps_max * sizeof (SV *); |
593 | #else |
714 | rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); |
594 | Safefree (stack->sptr); |
715 | rss += slot->scopestack_max * sizeof (I32); |
|
|
716 | rss += slot->savestack_max * sizeof (ANY); |
|
|
717 | |
|
|
718 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
719 | rss += slot->retstack_max * sizeof (OP *); |
595 | #endif |
720 | #endif |
596 | Safefree (stack); |
|
|
597 | } |
721 | } |
598 | else if (ctx->gencnt == stack->gencnt) |
722 | } |
599 | --stack->usecnt; |
723 | |
|
|
724 | return rss; |
|
|
725 | } |
|
|
726 | |
|
|
727 | /** coroutine stack handling ************************************************/ |
|
|
728 | |
|
|
729 | static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
|
|
730 | static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
|
|
731 | static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
|
|
732 | |
|
|
733 | /* apparently < 5.8.8 */ |
|
|
734 | #ifndef MgPV_nolen_const |
|
|
735 | #define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
|
|
736 | SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
|
|
737 | (const char*)(mg)->mg_ptr) |
|
|
738 | #endif |
|
|
739 | |
|
|
740 | /* |
|
|
741 | * This overrides the default magic get method of %SIG elements. |
|
|
742 | * The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
|
|
743 | * and instead of tryign to save and restore the hash elements, we just provide |
|
|
744 | * readback here. |
|
|
745 | * We only do this when the hook is != 0, as they are often set to 0 temporarily, |
|
|
746 | * not expecting this to actually change the hook. This is a potential problem |
|
|
747 | * when a schedule happens then, but we ignore this. |
|
|
748 | */ |
|
|
749 | static int |
|
|
750 | coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
|
|
751 | { |
|
|
752 | const char *s = MgPV_nolen_const (mg); |
|
|
753 | |
|
|
754 | if (*s == '_') |
600 | } |
755 | { |
601 | } |
756 | SV **svp = 0; |
602 | |
757 | |
|
|
758 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
759 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
760 | |
|
|
761 | if (svp) |
|
|
762 | { |
|
|
763 | sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
|
|
764 | return 0; |
|
|
765 | } |
|
|
766 | } |
|
|
767 | |
|
|
768 | return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
|
|
769 | } |
|
|
770 | |
603 | static void |
771 | static int |
604 | setup_coro (void *arg) |
772 | coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
|
|
773 | { |
|
|
774 | const char *s = MgPV_nolen_const (mg); |
|
|
775 | |
|
|
776 | if (*s == '_') |
|
|
777 | { |
|
|
778 | SV **svp = 0; |
|
|
779 | |
|
|
780 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
781 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
782 | |
|
|
783 | if (svp) |
|
|
784 | { |
|
|
785 | SV *old = *svp; |
|
|
786 | *svp = 0; |
|
|
787 | SvREFCNT_dec (old); |
|
|
788 | return 0; |
|
|
789 | } |
|
|
790 | } |
|
|
791 | |
|
|
792 | return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
|
|
793 | } |
|
|
794 | |
|
|
795 | static int |
|
|
796 | coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
|
|
797 | { |
|
|
798 | const char *s = MgPV_nolen_const (mg); |
|
|
799 | |
|
|
800 | if (*s == '_') |
|
|
801 | { |
|
|
802 | SV **svp = 0; |
|
|
803 | |
|
|
804 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
805 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
806 | |
|
|
807 | if (svp) |
|
|
808 | { |
|
|
809 | SV *old = *svp; |
|
|
810 | *svp = newSVsv (sv); |
|
|
811 | SvREFCNT_dec (old); |
|
|
812 | return 0; |
|
|
813 | } |
|
|
814 | } |
|
|
815 | |
|
|
816 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
|
|
817 | } |
|
|
818 | |
|
|
819 | static void |
|
|
820 | prepare_nop (pTHX_ struct coro_transfer_args *ta) |
|
|
821 | { |
|
|
822 | /* kind of mega-hacky, but works */ |
|
|
823 | ta->next = ta->prev = (struct coro *)ta; |
|
|
824 | } |
|
|
825 | |
|
|
826 | static int |
|
|
827 | slf_check_nop (pTHX_ struct CoroSLF *frame) |
|
|
828 | { |
|
|
829 | return 0; |
|
|
830 | } |
|
|
831 | |
|
|
832 | static void NOINLINE /* noinline to keep it out of the transfer fast path */ |
|
|
833 | coro_setup (pTHX_ struct coro *coro) |
605 | { |
834 | { |
606 | /* |
835 | /* |
607 | * emulate part of the perl startup here. |
836 | * emulate part of the perl startup here. |
608 | */ |
837 | */ |
609 | dSP; |
|
|
610 | Coro__State ctx = (Coro__State)arg; |
|
|
611 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
|
|
612 | |
|
|
613 | coro_init_stacks (aTHX); |
838 | coro_init_stacks (aTHX); |
614 | /*PL_curcop = 0;*/ |
839 | |
615 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
840 | PL_runops = RUNOPS_DEFAULT; |
|
|
841 | PL_curcop = &PL_compiling; |
|
|
842 | PL_in_eval = EVAL_NULL; |
|
|
843 | PL_comppad = 0; |
|
|
844 | PL_curpm = 0; |
|
|
845 | PL_curpad = 0; |
|
|
846 | PL_localizing = 0; |
|
|
847 | PL_dirty = 0; |
|
|
848 | PL_restartop = 0; |
|
|
849 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
850 | PL_parser = 0; |
|
|
851 | #endif |
|
|
852 | |
|
|
853 | /* recreate the die/warn hooks */ |
|
|
854 | PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
|
|
855 | PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
|
|
856 | |
|
|
857 | GvSV (PL_defgv) = newSV (0); |
|
|
858 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
859 | GvSV (PL_errgv) = newSV (0); |
|
|
860 | GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
|
|
861 | PL_rs = newSVsv (GvSV (irsgv)); |
|
|
862 | PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
|
|
863 | |
|
|
864 | { |
|
|
865 | dSP; |
|
|
866 | UNOP myop; |
|
|
867 | |
|
|
868 | Zero (&myop, 1, UNOP); |
|
|
869 | myop.op_next = Nullop; |
|
|
870 | myop.op_flags = OPf_WANT_VOID; |
|
|
871 | |
|
|
872 | PUSHMARK (SP); |
|
|
873 | XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
|
|
874 | PUTBACK; |
|
|
875 | PL_op = (OP *)&myop; |
|
|
876 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
877 | SPAGAIN; |
|
|
878 | } |
|
|
879 | |
|
|
880 | /* this newly created coroutine might be run on an existing cctx which most |
|
|
881 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
|
|
882 | */ |
|
|
883 | slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
|
|
884 | slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
|
|
885 | |
|
|
886 | coro_throw = coro->throw; |
|
|
887 | } |
|
|
888 | |
|
|
889 | static void |
|
|
890 | coro_destruct (pTHX_ struct coro *coro) |
|
|
891 | { |
|
|
892 | if (!IN_DESTRUCT) |
|
|
893 | { |
|
|
894 | /* restore all saved variables and stuff */ |
|
|
895 | LEAVE_SCOPE (0); |
|
|
896 | assert (PL_tmps_floor == -1); |
|
|
897 | |
|
|
898 | /* free all temporaries */ |
|
|
899 | FREETMPS; |
|
|
900 | assert (PL_tmps_ix == -1); |
|
|
901 | |
|
|
902 | /* unwind all extra stacks */ |
|
|
903 | POPSTACK_TO (PL_mainstack); |
|
|
904 | |
|
|
905 | /* unwind main stack */ |
|
|
906 | dounwind (-1); |
|
|
907 | } |
|
|
908 | |
|
|
909 | SvREFCNT_dec (GvSV (PL_defgv)); |
616 | SvREFCNT_dec (GvAV (PL_defgv)); |
910 | SvREFCNT_dec (GvAV (PL_defgv)); |
617 | GvAV (PL_defgv) = ctx->args; |
911 | SvREFCNT_dec (GvSV (PL_errgv)); |
|
|
912 | SvREFCNT_dec (PL_defoutgv); |
|
|
913 | SvREFCNT_dec (PL_rs); |
|
|
914 | SvREFCNT_dec (GvSV (irsgv)); |
618 | |
915 | |
619 | SPAGAIN; |
916 | SvREFCNT_dec (PL_diehook); |
|
|
917 | SvREFCNT_dec (PL_warnhook); |
|
|
918 | |
|
|
919 | SvREFCNT_dec (coro->saved_deffh); |
|
|
920 | SvREFCNT_dec (coro_throw); |
620 | |
921 | |
621 | if (ctx->stack) |
922 | coro_destruct_stacks (aTHX); |
622 | { |
923 | } |
623 | ctx->cursp = 0; |
|
|
624 | |
924 | |
625 | PUSHMARK(SP); |
925 | INLINE void |
626 | PUTBACK; |
926 | free_coro_mortal (pTHX) |
627 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
927 | { |
628 | |
928 | if (expect_true (coro_mortal)) |
629 | if (SvTRUE (ERRSV)) |
|
|
630 | croak (NULL); |
|
|
631 | else |
|
|
632 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
633 | } |
929 | { |
634 | else |
930 | SvREFCNT_dec (coro_mortal); |
|
|
931 | coro_mortal = 0; |
635 | { |
932 | } |
636 | UNOP myop; |
933 | } |
637 | |
934 | |
638 | PL_op = (OP *)&myop; |
935 | static int |
|
|
936 | runops_trace (pTHX) |
|
|
937 | { |
|
|
938 | COP *oldcop = 0; |
|
|
939 | int oldcxix = -2; |
|
|
940 | struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */ |
|
|
941 | coro_cctx *cctx = coro->cctx; |
639 | |
942 | |
640 | Zero(&myop, 1, UNOP); |
943 | while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
641 | myop.op_next = Nullop; |
|
|
642 | myop.op_flags = OPf_WANT_VOID; |
|
|
643 | |
|
|
644 | PUSHMARK(SP); |
|
|
645 | XPUSHs (sub_init); |
|
|
646 | /* |
|
|
647 | * the next line is slightly wrong, as PL_op->op_next |
|
|
648 | * is actually being executed so we skip the first op. |
|
|
649 | * that doesn't matter, though, since it is only |
|
|
650 | * pp_nextstate and we never return... |
|
|
651 | * ah yes, and I don't care anyways ;) |
|
|
652 | */ |
|
|
653 | PUTBACK; |
|
|
654 | PL_op = pp_entersub(); |
|
|
655 | SPAGAIN; |
|
|
656 | |
|
|
657 | ENTER; /* necessary e.g. for dounwind */ |
|
|
658 | } |
944 | { |
659 | } |
945 | PERL_ASYNC_CHECK (); |
660 | |
946 | |
661 | static void |
947 | if (cctx->flags & CC_TRACE_ALL) |
662 | continue_coro (void *arg) |
|
|
663 | { |
|
|
664 | /* |
|
|
665 | * this is a _very_ stripped down perl interpreter ;) |
|
|
666 | */ |
|
|
667 | Coro__State ctx = (Coro__State)arg; |
|
|
668 | |
|
|
669 | /*FIXME*//* must set up top_env here */ |
|
|
670 | ctx->cursp = 0; |
|
|
671 | PL_op = PL_op->op_next; |
|
|
672 | CALLRUNOPS(aTHX); |
|
|
673 | |
|
|
674 | abort (); |
|
|
675 | } |
|
|
676 | |
|
|
677 | STATIC void |
|
|
678 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
679 | { |
|
|
680 | dSP; |
|
|
681 | dSTACKLEVEL; |
|
|
682 | |
|
|
683 | if (prev != next) |
|
|
684 | { |
|
|
685 | if (next->mainstack) |
|
|
686 | { |
948 | { |
687 | SAVE (prev, flags); |
949 | if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) |
688 | LOAD (next); |
|
|
689 | |
|
|
690 | /* mark this state as in-use */ |
|
|
691 | next->mainstack = 0; |
|
|
692 | next->tmps_ix = -2; |
|
|
693 | |
|
|
694 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
695 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
696 | { |
950 | { |
697 | if (!prev->stack) |
951 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
698 | allocate_stack (prev, 0); |
952 | SV **bot, **top; |
699 | else if (prev->cursp != stacklevel |
953 | AV *av = newAV (); /* return values */ |
700 | && prev->stack->usecnt > 1) |
954 | SV **cb; |
|
|
955 | dSP; |
|
|
956 | |
|
|
957 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
958 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
959 | if (isGV (gv)) |
|
|
960 | gv_efullname3 (fullname, gv, 0); |
|
|
961 | |
|
|
962 | bot = PL_stack_base + cx->blk_oldsp + 1; |
|
|
963 | top = cx->blk_gimme == G_ARRAY ? SP + 1 |
|
|
964 | : cx->blk_gimme == G_SCALAR ? bot + 1 |
|
|
965 | : bot; |
|
|
966 | |
|
|
967 | av_extend (av, top - bot); |
|
|
968 | while (bot < top) |
|
|
969 | av_push (av, SvREFCNT_inc_NN (*bot++)); |
|
|
970 | |
|
|
971 | PL_runops = RUNOPS_DEFAULT; |
|
|
972 | ENTER; |
|
|
973 | SAVETMPS; |
|
|
974 | EXTEND (SP, 3); |
|
|
975 | PUSHMARK (SP); |
|
|
976 | PUSHs (&PL_sv_no); |
|
|
977 | PUSHs (fullname); |
|
|
978 | PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
979 | PUTBACK; |
|
|
980 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
981 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
982 | SPAGAIN; |
|
|
983 | FREETMPS; |
|
|
984 | LEAVE; |
|
|
985 | PL_runops = runops_trace; |
|
|
986 | } |
|
|
987 | |
|
|
988 | if (oldcop != PL_curcop) |
|
|
989 | { |
|
|
990 | oldcop = PL_curcop; |
|
|
991 | |
|
|
992 | if (PL_curcop != &PL_compiling) |
701 | { |
993 | { |
702 | prev->gencnt = ++prev->stack->gencnt; |
994 | SV **cb; |
703 | prev->stack->usecnt = 1; |
|
|
704 | } |
|
|
705 | |
995 | |
706 | /* has our stack been invalidated? */ |
996 | if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) |
707 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
708 | { |
997 | { |
709 | deallocate_stack (next); |
998 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
710 | allocate_stack (next, 1); |
999 | |
711 | coro_create (&(next->stack->cctx), |
1000 | if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
712 | continue_coro, (void *)next, |
1001 | { |
713 | next->stack->sptr, labs (next->stack->ssize)); |
1002 | runops_proc_t old_runops = PL_runops; |
|
|
1003 | dSP; |
|
|
1004 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
1005 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
1006 | |
|
|
1007 | if (isGV (gv)) |
|
|
1008 | gv_efullname3 (fullname, gv, 0); |
|
|
1009 | |
|
|
1010 | PL_runops = RUNOPS_DEFAULT; |
|
|
1011 | ENTER; |
|
|
1012 | SAVETMPS; |
|
|
1013 | EXTEND (SP, 3); |
|
|
1014 | PUSHMARK (SP); |
|
|
1015 | PUSHs (&PL_sv_yes); |
|
|
1016 | PUSHs (fullname); |
|
|
1017 | PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
|
|
1018 | PUTBACK; |
|
|
1019 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
1020 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1021 | SPAGAIN; |
|
|
1022 | FREETMPS; |
|
|
1023 | LEAVE; |
|
|
1024 | PL_runops = runops_trace; |
|
|
1025 | } |
|
|
1026 | |
|
|
1027 | oldcxix = cxstack_ix; |
714 | } |
1028 | } |
715 | |
1029 | |
716 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
1030 | if (cctx->flags & CC_TRACE_LINE) |
717 | } |
|
|
718 | |
|
|
719 | } |
|
|
720 | else if (next->tmps_ix == -2) |
|
|
721 | croak ("tried to transfer to running coroutine"); |
|
|
722 | else |
|
|
723 | { |
|
|
724 | SAVE (prev, -1); /* first get rid of the old state */ |
|
|
725 | |
|
|
726 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
727 | { |
|
|
728 | if (!prev->stack) |
|
|
729 | allocate_stack (prev, 0); |
|
|
730 | |
|
|
731 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
732 | { |
1031 | { |
733 | setup_coro (next); |
1032 | dSP; |
734 | |
1033 | |
735 | prev->stack->refcnt++; |
1034 | PL_runops = RUNOPS_DEFAULT; |
736 | prev->stack->usecnt++; |
1035 | ENTER; |
737 | next->stack = prev->stack; |
1036 | SAVETMPS; |
738 | next->gencnt = prev->gencnt; |
1037 | EXTEND (SP, 3); |
|
|
1038 | PL_runops = RUNOPS_DEFAULT; |
|
|
1039 | PUSHMARK (SP); |
|
|
1040 | PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
|
|
1041 | PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
|
|
1042 | PUTBACK; |
|
|
1043 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
|
|
1044 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1045 | SPAGAIN; |
|
|
1046 | FREETMPS; |
|
|
1047 | LEAVE; |
|
|
1048 | PL_runops = runops_trace; |
739 | } |
1049 | } |
740 | else |
|
|
741 | { |
|
|
742 | allocate_stack (next, 1); |
|
|
743 | coro_create (&(next->stack->cctx), |
|
|
744 | setup_coro, (void *)next, |
|
|
745 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
746 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
747 | } |
1050 | } |
748 | } |
1051 | } |
749 | else |
|
|
750 | setup_coro (next); |
|
|
751 | } |
1052 | } |
752 | } |
1053 | } |
753 | |
1054 | |
754 | next->cursp = stacklevel; |
1055 | TAINT_NOT; |
|
|
1056 | return 0; |
755 | } |
1057 | } |
756 | |
1058 | |
757 | static struct coro * |
1059 | static void |
758 | sv_to_coro (SV *arg, const char *funcname, const char *varname) |
1060 | prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) |
759 | { |
1061 | { |
760 | if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV) |
1062 | ta->prev = (struct coro *)cctx; |
|
|
1063 | ta->next = 0; |
|
|
1064 | } |
|
|
1065 | |
|
|
1066 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
|
|
1067 | /* _cctx_init should be careful, as it could be called at almost any time */ |
|
|
1068 | /* during execution of a perl program */ |
|
|
1069 | /* also initialises PL_top_env */ |
|
|
1070 | static void NOINLINE |
|
|
1071 | cctx_prepare (pTHX_ coro_cctx *cctx) |
|
|
1072 | { |
|
|
1073 | dSP; |
|
|
1074 | UNOP myop; |
|
|
1075 | |
|
|
1076 | PL_top_env = &PL_start_env; |
|
|
1077 | |
|
|
1078 | if (cctx->flags & CC_TRACE) |
|
|
1079 | PL_runops = runops_trace; |
|
|
1080 | |
|
|
1081 | Zero (&myop, 1, UNOP); |
|
|
1082 | myop.op_next = PL_op; |
|
|
1083 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
|
|
1084 | |
|
|
1085 | PUSHMARK (SP); |
|
|
1086 | EXTEND (SP, 2); |
|
|
1087 | PUSHs (sv_2mortal (newSViv ((IV)cctx))); |
|
|
1088 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
|
|
1089 | PUTBACK; |
|
|
1090 | PL_op = (OP *)&myop; |
|
|
1091 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1092 | SPAGAIN; |
|
|
1093 | } |
|
|
1094 | |
|
|
1095 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
|
|
1096 | INLINE void |
|
|
1097 | transfer_tail (pTHX) |
|
|
1098 | { |
|
|
1099 | free_coro_mortal (aTHX); |
|
|
1100 | } |
|
|
1101 | |
|
|
1102 | /* |
|
|
1103 | * this is a _very_ stripped down perl interpreter ;) |
|
|
1104 | */ |
|
|
1105 | static void |
|
|
1106 | cctx_run (void *arg) |
|
|
1107 | { |
|
|
1108 | #ifdef USE_ITHREADS |
|
|
1109 | # if CORO_PTHREAD |
|
|
1110 | PERL_SET_CONTEXT (coro_thx); |
|
|
1111 | # endif |
|
|
1112 | #endif |
|
|
1113 | { |
|
|
1114 | dTHX; |
|
|
1115 | |
|
|
1116 | /* normally we would need to skip the entersub here */ |
|
|
1117 | /* not doing so will re-execute it, which is exactly what we want */ |
|
|
1118 | /* PL_nop = PL_nop->op_next */ |
|
|
1119 | |
|
|
1120 | /* inject a fake subroutine call to cctx_init */ |
|
|
1121 | cctx_prepare (aTHX_ (coro_cctx *)arg); |
|
|
1122 | |
|
|
1123 | /* cctx_run is the alternative tail of transfer() */ |
|
|
1124 | transfer_tail (aTHX); |
|
|
1125 | |
|
|
1126 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
|
|
1127 | PL_restartop = PL_op; |
|
|
1128 | perl_run (PL_curinterp); |
|
|
1129 | |
|
|
1130 | /* |
|
|
1131 | * If perl-run returns we assume exit() was being called or the coro |
|
|
1132 | * fell off the end, which seems to be the only valid (non-bug) |
|
|
1133 | * reason for perl_run to return. We try to exit by jumping to the |
|
|
1134 | * bootstrap-time "top" top_env, as we cannot restore the "main" |
|
|
1135 | * coroutine as Coro has no such concept |
|
|
1136 | */ |
|
|
1137 | PL_top_env = main_top_env; |
|
|
1138 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
|
|
1139 | } |
|
|
1140 | } |
|
|
1141 | |
|
|
1142 | static coro_cctx * |
|
|
1143 | cctx_new () |
|
|
1144 | { |
|
|
1145 | coro_cctx *cctx; |
|
|
1146 | |
|
|
1147 | ++cctx_count; |
|
|
1148 | New (0, cctx, 1, coro_cctx); |
|
|
1149 | |
|
|
1150 | cctx->gen = cctx_gen; |
|
|
1151 | cctx->flags = 0; |
|
|
1152 | cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
|
|
1153 | |
|
|
1154 | return cctx; |
|
|
1155 | } |
|
|
1156 | |
|
|
1157 | /* create a new cctx only suitable as source */ |
|
|
1158 | static coro_cctx * |
|
|
1159 | cctx_new_empty () |
|
|
1160 | { |
|
|
1161 | coro_cctx *cctx = cctx_new (); |
|
|
1162 | |
|
|
1163 | cctx->sptr = 0; |
|
|
1164 | coro_create (&cctx->cctx, 0, 0, 0, 0); |
|
|
1165 | |
|
|
1166 | return cctx; |
|
|
1167 | } |
|
|
1168 | |
|
|
1169 | /* create a new cctx suitable as destination/running a perl interpreter */ |
|
|
1170 | static coro_cctx * |
|
|
1171 | cctx_new_run () |
|
|
1172 | { |
|
|
1173 | coro_cctx *cctx = cctx_new (); |
|
|
1174 | void *stack_start; |
|
|
1175 | size_t stack_size; |
|
|
1176 | |
|
|
1177 | #if HAVE_MMAP |
|
|
1178 | cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
|
|
1179 | /* mmap supposedly does allocate-on-write for us */ |
|
|
1180 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
1181 | |
|
|
1182 | if (cctx->sptr != (void *)-1) |
761 | { |
1183 | { |
762 | HE *he = hv_fetch_ent((HV *)SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash); |
1184 | #if CORO_STACKGUARD |
763 | |
1185 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
764 | if (!he) |
1186 | #endif |
765 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname); |
1187 | stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
766 | |
1188 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
767 | arg = HeVAL(he); |
1189 | cctx->flags |= CC_MAPPED; |
768 | } |
1190 | } |
769 | |
|
|
770 | /* must also be changed inside Coro::Cont::yield */ |
|
|
771 | if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash) |
|
|
772 | return (struct coro *) SvIV((SV*)SvRV(arg)); |
|
|
773 | else |
1191 | else |
774 | croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname); |
1192 | #endif |
775 | } |
1193 | { |
|
|
1194 | cctx->ssize = cctx_stacksize * (long)sizeof (long); |
|
|
1195 | New (0, cctx->sptr, cctx_stacksize, long); |
776 | |
1196 | |
|
|
1197 | if (!cctx->sptr) |
|
|
1198 | { |
|
|
1199 | perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
|
|
1200 | _exit (EXIT_FAILURE); |
|
|
1201 | } |
|
|
1202 | |
|
|
1203 | stack_start = cctx->sptr; |
|
|
1204 | stack_size = cctx->ssize; |
|
|
1205 | } |
|
|
1206 | |
|
|
1207 | #if CORO_USE_VALGRIND |
|
|
1208 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
|
|
1209 | #endif |
|
|
1210 | |
|
|
1211 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
|
|
1212 | |
|
|
1213 | return cctx; |
|
|
1214 | } |
|
|
1215 | |
|
|
1216 | static void |
|
|
1217 | cctx_destroy (coro_cctx *cctx) |
|
|
1218 | { |
|
|
1219 | if (!cctx) |
|
|
1220 | return; |
|
|
1221 | |
|
|
1222 | --cctx_count; |
|
|
1223 | coro_destroy (&cctx->cctx); |
|
|
1224 | |
|
|
1225 | /* coro_transfer creates new, empty cctx's */ |
|
|
1226 | if (cctx->sptr) |
|
|
1227 | { |
|
|
1228 | #if CORO_USE_VALGRIND |
|
|
1229 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
1230 | #endif |
|
|
1231 | |
|
|
1232 | #if HAVE_MMAP |
|
|
1233 | if (cctx->flags & CC_MAPPED) |
|
|
1234 | munmap (cctx->sptr, cctx->ssize); |
|
|
1235 | else |
|
|
1236 | #endif |
|
|
1237 | Safefree (cctx->sptr); |
|
|
1238 | } |
|
|
1239 | |
|
|
1240 | Safefree (cctx); |
|
|
1241 | } |
|
|
1242 | |
|
|
1243 | /* wether this cctx should be destructed */ |
|
|
1244 | #define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
|
|
1245 | |
|
|
1246 | static coro_cctx * |
|
|
1247 | cctx_get (pTHX) |
|
|
1248 | { |
|
|
1249 | while (expect_true (cctx_first)) |
|
|
1250 | { |
|
|
1251 | coro_cctx *cctx = cctx_first; |
|
|
1252 | cctx_first = cctx->next; |
|
|
1253 | --cctx_idle; |
|
|
1254 | |
|
|
1255 | if (expect_true (!CCTX_EXPIRED (cctx))) |
|
|
1256 | return cctx; |
|
|
1257 | |
|
|
1258 | cctx_destroy (cctx); |
|
|
1259 | } |
|
|
1260 | |
|
|
1261 | return cctx_new_run (); |
|
|
1262 | } |
|
|
1263 | |
|
|
1264 | static void |
|
|
1265 | cctx_put (coro_cctx *cctx) |
|
|
1266 | { |
|
|
1267 | assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
|
|
1268 | |
|
|
1269 | /* free another cctx if overlimit */ |
|
|
1270 | if (expect_false (cctx_idle >= cctx_max_idle)) |
|
|
1271 | { |
|
|
1272 | coro_cctx *first = cctx_first; |
|
|
1273 | cctx_first = first->next; |
|
|
1274 | --cctx_idle; |
|
|
1275 | |
|
|
1276 | cctx_destroy (first); |
|
|
1277 | } |
|
|
1278 | |
|
|
1279 | ++cctx_idle; |
|
|
1280 | cctx->next = cctx_first; |
|
|
1281 | cctx_first = cctx; |
|
|
1282 | } |
|
|
1283 | |
|
|
1284 | /** coroutine switching *****************************************************/ |
|
|
1285 | |
|
|
1286 | static void |
|
|
1287 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
|
|
1288 | { |
|
|
1289 | /* TODO: throwing up here is considered harmful */ |
|
|
1290 | |
|
|
1291 | if (expect_true (prev != next)) |
|
|
1292 | { |
|
|
1293 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
|
|
1294 | croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); |
|
|
1295 | |
|
|
1296 | if (expect_false (next->flags & CF_RUNNING)) |
|
|
1297 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); |
|
|
1298 | |
|
|
1299 | if (expect_false (next->flags & CF_DESTROYED)) |
|
|
1300 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); |
|
|
1301 | |
|
|
1302 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
1303 | if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
|
|
1304 | croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); |
|
|
1305 | #endif |
|
|
1306 | } |
|
|
1307 | } |
|
|
1308 | |
|
|
1309 | /* always use the TRANSFER macro */ |
|
|
1310 | static void NOINLINE /* noinline so we have a fixed stackframe */ |
|
|
1311 | transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
|
|
1312 | { |
|
|
1313 | dSTACKLEVEL; |
|
|
1314 | |
|
|
1315 | /* sometimes transfer is only called to set idle_sp */ |
|
|
1316 | if (expect_false (!next)) |
|
|
1317 | { |
|
|
1318 | ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; |
|
|
1319 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
1320 | } |
|
|
1321 | else if (expect_true (prev != next)) |
|
|
1322 | { |
|
|
1323 | coro_cctx *prev__cctx; |
|
|
1324 | |
|
|
1325 | if (expect_false (prev->flags & CF_NEW)) |
|
|
1326 | { |
|
|
1327 | /* create a new empty/source context */ |
|
|
1328 | prev->cctx = cctx_new_empty (); |
|
|
1329 | prev->flags &= ~CF_NEW; |
|
|
1330 | prev->flags |= CF_RUNNING; |
|
|
1331 | } |
|
|
1332 | |
|
|
1333 | prev->flags &= ~CF_RUNNING; |
|
|
1334 | next->flags |= CF_RUNNING; |
|
|
1335 | |
|
|
1336 | /* first get rid of the old state */ |
|
|
1337 | save_perl (aTHX_ prev); |
|
|
1338 | |
|
|
1339 | if (expect_false (next->flags & CF_NEW)) |
|
|
1340 | { |
|
|
1341 | /* need to start coroutine */ |
|
|
1342 | next->flags &= ~CF_NEW; |
|
|
1343 | /* setup coroutine call */ |
|
|
1344 | coro_setup (aTHX_ next); |
|
|
1345 | } |
|
|
1346 | else |
|
|
1347 | load_perl (aTHX_ next); |
|
|
1348 | |
|
|
1349 | prev__cctx = prev->cctx; |
|
|
1350 | |
|
|
1351 | /* possibly untie and reuse the cctx */ |
|
|
1352 | if (expect_true ( |
|
|
1353 | prev__cctx->idle_sp == (void *)stacklevel |
|
|
1354 | && !(prev__cctx->flags & CC_TRACE) |
|
|
1355 | && !force_cctx |
|
|
1356 | )) |
|
|
1357 | { |
|
|
1358 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
|
|
1359 | assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); |
|
|
1360 | |
|
|
1361 | prev->cctx = 0; |
|
|
1362 | |
|
|
1363 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
|
|
1364 | /* without this the next cctx_get might destroy the prev__cctx while still in use */ |
|
|
1365 | if (expect_false (CCTX_EXPIRED (prev__cctx))) |
|
|
1366 | if (!next->cctx) |
|
|
1367 | next->cctx = cctx_get (aTHX); |
|
|
1368 | |
|
|
1369 | cctx_put (prev__cctx); |
|
|
1370 | } |
|
|
1371 | |
|
|
1372 | ++next->usecount; |
|
|
1373 | |
|
|
1374 | if (expect_true (!next->cctx)) |
|
|
1375 | next->cctx = cctx_get (aTHX); |
|
|
1376 | |
|
|
1377 | if (expect_false (prev__cctx != next->cctx)) |
|
|
1378 | { |
|
|
1379 | prev__cctx->top_env = PL_top_env; |
|
|
1380 | PL_top_env = next->cctx->top_env; |
|
|
1381 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
|
|
1382 | } |
|
|
1383 | |
|
|
1384 | transfer_tail (aTHX); |
|
|
1385 | } |
|
|
1386 | } |
|
|
1387 | |
|
|
1388 | #define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
|
|
1389 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
|
|
1390 | |
|
|
1391 | /** high level stuff ********************************************************/ |
|
|
1392 | |
|
|
1393 | static int |
|
|
1394 | coro_state_destroy (pTHX_ struct coro *coro) |
|
|
1395 | { |
|
|
1396 | if (coro->flags & CF_DESTROYED) |
|
|
1397 | return 0; |
|
|
1398 | |
|
|
1399 | if (coro->on_destroy) |
|
|
1400 | coro->on_destroy (aTHX_ coro); |
|
|
1401 | |
|
|
1402 | coro->flags |= CF_DESTROYED; |
|
|
1403 | |
|
|
1404 | if (coro->flags & CF_READY) |
|
|
1405 | { |
|
|
1406 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
1407 | /* alternative: look through all ready queues and remove the coro */ |
|
|
1408 | --coro_nready; |
|
|
1409 | } |
|
|
1410 | else |
|
|
1411 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
|
|
1412 | |
|
|
1413 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
1414 | { |
|
|
1415 | struct coro temp; |
|
|
1416 | |
|
|
1417 | assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); |
|
|
1418 | |
|
|
1419 | save_perl (aTHX_ &temp); |
|
|
1420 | load_perl (aTHX_ coro); |
|
|
1421 | |
|
|
1422 | coro_destruct (aTHX_ coro); |
|
|
1423 | |
|
|
1424 | load_perl (aTHX_ &temp); |
|
|
1425 | |
|
|
1426 | coro->slot = 0; |
|
|
1427 | } |
|
|
1428 | |
|
|
1429 | cctx_destroy (coro->cctx); |
|
|
1430 | SvREFCNT_dec (coro->args); |
|
|
1431 | |
|
|
1432 | if (coro->next) coro->next->prev = coro->prev; |
|
|
1433 | if (coro->prev) coro->prev->next = coro->next; |
|
|
1434 | if (coro == coro_first) coro_first = coro->next; |
|
|
1435 | |
|
|
1436 | return 1; |
|
|
1437 | } |
|
|
1438 | |
|
|
1439 | static int |
|
|
1440 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
1441 | { |
|
|
1442 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1443 | mg->mg_ptr = 0; |
|
|
1444 | |
|
|
1445 | coro->hv = 0; |
|
|
1446 | |
|
|
1447 | if (--coro->refcnt < 0) |
|
|
1448 | { |
|
|
1449 | coro_state_destroy (aTHX_ coro); |
|
|
1450 | Safefree (coro); |
|
|
1451 | } |
|
|
1452 | |
|
|
1453 | return 0; |
|
|
1454 | } |
|
|
1455 | |
|
|
1456 | static int |
|
|
1457 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
1458 | { |
|
|
1459 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1460 | |
|
|
1461 | ++coro->refcnt; |
|
|
1462 | |
|
|
1463 | return 0; |
|
|
1464 | } |
|
|
1465 | |
|
|
1466 | static MGVTBL coro_state_vtbl = { |
|
|
1467 | 0, 0, 0, 0, |
|
|
1468 | coro_state_free, |
|
|
1469 | 0, |
|
|
1470 | #ifdef MGf_DUP |
|
|
1471 | coro_state_dup, |
|
|
1472 | #else |
|
|
1473 | # define MGf_DUP 0 |
|
|
1474 | #endif |
|
|
1475 | }; |
|
|
1476 | |
|
|
1477 | static void |
|
|
1478 | prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
|
|
1479 | { |
|
|
1480 | ta->prev = SvSTATE (prev_sv); |
|
|
1481 | ta->next = SvSTATE (next_sv); |
|
|
1482 | TRANSFER_CHECK (*ta); |
|
|
1483 | } |
|
|
1484 | |
|
|
1485 | static void |
|
|
1486 | api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
|
|
1487 | { |
|
|
1488 | struct coro_transfer_args ta; |
|
|
1489 | |
|
|
1490 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
|
|
1491 | TRANSFER (ta, 1); |
|
|
1492 | } |
|
|
1493 | |
|
|
1494 | /** Coro ********************************************************************/ |
|
|
1495 | |
|
|
1496 | INLINE void |
|
|
1497 | coro_enq (pTHX_ struct coro *coro) |
|
|
1498 | { |
|
|
1499 | av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); |
|
|
1500 | } |
|
|
1501 | |
|
|
1502 | INLINE SV * |
|
|
1503 | coro_deq (pTHX) |
|
|
1504 | { |
|
|
1505 | int prio; |
|
|
1506 | |
|
|
1507 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) |
|
|
1508 | if (AvFILLp (coro_ready [prio]) >= 0) |
|
|
1509 | return av_shift (coro_ready [prio]); |
|
|
1510 | |
|
|
1511 | return 0; |
|
|
1512 | } |
|
|
1513 | |
|
|
1514 | static int |
|
|
1515 | api_ready (pTHX_ SV *coro_sv) |
|
|
1516 | { |
|
|
1517 | struct coro *coro; |
|
|
1518 | SV *sv_hook; |
|
|
1519 | void (*xs_hook)(void); |
|
|
1520 | |
|
|
1521 | if (SvROK (coro_sv)) |
|
|
1522 | coro_sv = SvRV (coro_sv); |
|
|
1523 | |
|
|
1524 | coro = SvSTATE (coro_sv); |
|
|
1525 | |
|
|
1526 | if (coro->flags & CF_READY) |
|
|
1527 | return 0; |
|
|
1528 | |
|
|
1529 | coro->flags |= CF_READY; |
|
|
1530 | |
|
|
1531 | sv_hook = coro_nready ? 0 : coro_readyhook; |
|
|
1532 | xs_hook = coro_nready ? 0 : coroapi.readyhook; |
|
|
1533 | |
|
|
1534 | coro_enq (aTHX_ coro); |
|
|
1535 | ++coro_nready; |
|
|
1536 | |
|
|
1537 | if (sv_hook) |
|
|
1538 | { |
|
|
1539 | dSP; |
|
|
1540 | |
|
|
1541 | ENTER; |
|
|
1542 | SAVETMPS; |
|
|
1543 | |
|
|
1544 | PUSHMARK (SP); |
|
|
1545 | PUTBACK; |
|
|
1546 | call_sv (sv_hook, G_DISCARD); |
|
|
1547 | SPAGAIN; |
|
|
1548 | |
|
|
1549 | FREETMPS; |
|
|
1550 | LEAVE; |
|
|
1551 | } |
|
|
1552 | |
|
|
1553 | if (xs_hook) |
|
|
1554 | xs_hook (); |
|
|
1555 | |
|
|
1556 | return 1; |
|
|
1557 | } |
|
|
1558 | |
|
|
1559 | static int |
|
|
1560 | api_is_ready (pTHX_ SV *coro_sv) |
|
|
1561 | { |
|
|
1562 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
|
|
1563 | } |
|
|
1564 | |
|
|
1565 | INLINE void |
|
|
1566 | prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
|
|
1567 | { |
|
|
1568 | SV *prev_sv, *next_sv; |
|
|
1569 | |
|
|
1570 | for (;;) |
|
|
1571 | { |
|
|
1572 | next_sv = coro_deq (aTHX); |
|
|
1573 | |
|
|
1574 | /* nothing to schedule: call the idle handler */ |
|
|
1575 | if (expect_false (!next_sv)) |
|
|
1576 | { |
|
|
1577 | dSP; |
|
|
1578 | |
|
|
1579 | ENTER; |
|
|
1580 | SAVETMPS; |
|
|
1581 | |
|
|
1582 | PUSHMARK (SP); |
|
|
1583 | PUTBACK; |
|
|
1584 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
|
|
1585 | SPAGAIN; |
|
|
1586 | |
|
|
1587 | FREETMPS; |
|
|
1588 | LEAVE; |
|
|
1589 | continue; |
|
|
1590 | } |
|
|
1591 | |
|
|
1592 | ta->next = SvSTATE_hv (next_sv); |
|
|
1593 | |
|
|
1594 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1595 | if (expect_false (ta->next->flags & CF_DESTROYED)) |
|
|
1596 | { |
|
|
1597 | SvREFCNT_dec (next_sv); |
|
|
1598 | /* coro_nready has already been taken care of by destroy */ |
|
|
1599 | continue; |
|
|
1600 | } |
|
|
1601 | |
|
|
1602 | --coro_nready; |
|
|
1603 | break; |
|
|
1604 | } |
|
|
1605 | |
|
|
1606 | /* free this only after the transfer */ |
|
|
1607 | prev_sv = SvRV (coro_current); |
|
|
1608 | ta->prev = SvSTATE_hv (prev_sv); |
|
|
1609 | TRANSFER_CHECK (*ta); |
|
|
1610 | assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); |
|
|
1611 | ta->next->flags &= ~CF_READY; |
|
|
1612 | SvRV_set (coro_current, next_sv); |
|
|
1613 | |
|
|
1614 | free_coro_mortal (aTHX); |
|
|
1615 | coro_mortal = prev_sv; |
|
|
1616 | } |
|
|
1617 | |
|
|
1618 | INLINE void |
|
|
1619 | prepare_cede (pTHX_ struct coro_transfer_args *ta) |
|
|
1620 | { |
|
|
1621 | api_ready (aTHX_ coro_current); |
|
|
1622 | prepare_schedule (aTHX_ ta); |
|
|
1623 | } |
|
|
1624 | |
|
|
1625 | INLINE void |
|
|
1626 | prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
|
|
1627 | { |
|
|
1628 | SV *prev = SvRV (coro_current); |
|
|
1629 | |
|
|
1630 | if (coro_nready) |
|
|
1631 | { |
|
|
1632 | prepare_schedule (aTHX_ ta); |
|
|
1633 | api_ready (aTHX_ prev); |
|
|
1634 | } |
|
|
1635 | else |
|
|
1636 | prepare_nop (aTHX_ ta); |
|
|
1637 | } |
|
|
1638 | |
|
|
1639 | static void |
|
|
1640 | api_schedule (pTHX) |
|
|
1641 | { |
|
|
1642 | struct coro_transfer_args ta; |
|
|
1643 | |
|
|
1644 | prepare_schedule (aTHX_ &ta); |
|
|
1645 | TRANSFER (ta, 1); |
|
|
1646 | } |
|
|
1647 | |
|
|
1648 | static int |
|
|
1649 | api_cede (pTHX) |
|
|
1650 | { |
|
|
1651 | struct coro_transfer_args ta; |
|
|
1652 | |
|
|
1653 | prepare_cede (aTHX_ &ta); |
|
|
1654 | |
|
|
1655 | if (expect_true (ta.prev != ta.next)) |
|
|
1656 | { |
|
|
1657 | TRANSFER (ta, 1); |
|
|
1658 | return 1; |
|
|
1659 | } |
|
|
1660 | else |
|
|
1661 | return 0; |
|
|
1662 | } |
|
|
1663 | |
|
|
1664 | static int |
|
|
1665 | api_cede_notself (pTHX) |
|
|
1666 | { |
|
|
1667 | if (coro_nready) |
|
|
1668 | { |
|
|
1669 | struct coro_transfer_args ta; |
|
|
1670 | |
|
|
1671 | prepare_cede_notself (aTHX_ &ta); |
|
|
1672 | TRANSFER (ta, 1); |
|
|
1673 | return 1; |
|
|
1674 | } |
|
|
1675 | else |
|
|
1676 | return 0; |
|
|
1677 | } |
|
|
1678 | |
|
|
1679 | static void |
|
|
1680 | api_trace (pTHX_ SV *coro_sv, int flags) |
|
|
1681 | { |
|
|
1682 | struct coro *coro = SvSTATE (coro_sv); |
|
|
1683 | |
|
|
1684 | if (flags & CC_TRACE) |
|
|
1685 | { |
|
|
1686 | if (!coro->cctx) |
|
|
1687 | coro->cctx = cctx_new_run (); |
|
|
1688 | else if (!(coro->cctx->flags & CC_TRACE)) |
|
|
1689 | croak ("cannot enable tracing on coroutine with custom stack,"); |
|
|
1690 | |
|
|
1691 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
|
|
1692 | } |
|
|
1693 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
|
|
1694 | { |
|
|
1695 | coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
|
|
1696 | |
|
|
1697 | if (coro->flags & CF_RUNNING) |
|
|
1698 | PL_runops = RUNOPS_DEFAULT; |
|
|
1699 | else |
|
|
1700 | coro->slot->runops = RUNOPS_DEFAULT; |
|
|
1701 | } |
|
|
1702 | } |
|
|
1703 | |
|
|
1704 | /*****************************************************************************/ |
|
|
1705 | /* PerlIO::cede */ |
|
|
1706 | |
|
|
1707 | typedef struct |
|
|
1708 | { |
|
|
1709 | PerlIOBuf base; |
|
|
1710 | NV next, every; |
|
|
1711 | } PerlIOCede; |
|
|
1712 | |
|
|
1713 | static IV |
|
|
1714 | PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
|
|
1715 | { |
|
|
1716 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
1717 | |
|
|
1718 | self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
|
|
1719 | self->next = nvtime () + self->every; |
|
|
1720 | |
|
|
1721 | return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
|
|
1722 | } |
|
|
1723 | |
|
|
1724 | static SV * |
|
|
1725 | PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
|
|
1726 | { |
|
|
1727 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
1728 | |
|
|
1729 | return newSVnv (self->every); |
|
|
1730 | } |
|
|
1731 | |
|
|
1732 | static IV |
|
|
1733 | PerlIOCede_flush (pTHX_ PerlIO *f) |
|
|
1734 | { |
|
|
1735 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
1736 | double now = nvtime (); |
|
|
1737 | |
|
|
1738 | if (now >= self->next) |
|
|
1739 | { |
|
|
1740 | api_cede (aTHX); |
|
|
1741 | self->next = now + self->every; |
|
|
1742 | } |
|
|
1743 | |
|
|
1744 | return PerlIOBuf_flush (aTHX_ f); |
|
|
1745 | } |
|
|
1746 | |
|
|
1747 | static PerlIO_funcs PerlIO_cede = |
|
|
1748 | { |
|
|
1749 | sizeof(PerlIO_funcs), |
|
|
1750 | "cede", |
|
|
1751 | sizeof(PerlIOCede), |
|
|
1752 | PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
|
|
1753 | PerlIOCede_pushed, |
|
|
1754 | PerlIOBuf_popped, |
|
|
1755 | PerlIOBuf_open, |
|
|
1756 | PerlIOBase_binmode, |
|
|
1757 | PerlIOCede_getarg, |
|
|
1758 | PerlIOBase_fileno, |
|
|
1759 | PerlIOBuf_dup, |
|
|
1760 | PerlIOBuf_read, |
|
|
1761 | PerlIOBuf_unread, |
|
|
1762 | PerlIOBuf_write, |
|
|
1763 | PerlIOBuf_seek, |
|
|
1764 | PerlIOBuf_tell, |
|
|
1765 | PerlIOBuf_close, |
|
|
1766 | PerlIOCede_flush, |
|
|
1767 | PerlIOBuf_fill, |
|
|
1768 | PerlIOBase_eof, |
|
|
1769 | PerlIOBase_error, |
|
|
1770 | PerlIOBase_clearerr, |
|
|
1771 | PerlIOBase_setlinebuf, |
|
|
1772 | PerlIOBuf_get_base, |
|
|
1773 | PerlIOBuf_bufsiz, |
|
|
1774 | PerlIOBuf_get_ptr, |
|
|
1775 | PerlIOBuf_get_cnt, |
|
|
1776 | PerlIOBuf_set_ptrcnt, |
|
|
1777 | }; |
|
|
1778 | |
|
|
1779 | /*****************************************************************************/ |
|
|
1780 | |
|
|
1781 | static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
|
|
1782 | static const CV *slf_cv; |
|
|
1783 | static SV **slf_argv; |
|
|
1784 | static int slf_argc, slf_arga; /* count, allocated */ |
|
|
1785 | static I32 slf_ax; /* top of stack, for restore */ |
|
|
1786 | |
|
|
1787 | /* this restores the stack in the case we patched the entersub, to */ |
|
|
1788 | /* recreate the stack frame as perl will on following calls */ |
|
|
1789 | /* since entersub cleared the stack */ |
|
|
1790 | static OP * |
|
|
1791 | pp_restore (pTHX) |
|
|
1792 | { |
|
|
1793 | int i; |
|
|
1794 | SV **SP = PL_stack_base + slf_ax; |
|
|
1795 | |
|
|
1796 | PUSHMARK (SP); |
|
|
1797 | |
|
|
1798 | EXTEND (SP, slf_argc + 1); |
|
|
1799 | |
|
|
1800 | for (i = 0; i < slf_argc; ++i) |
|
|
1801 | PUSHs (sv_2mortal (slf_argv [i])); |
|
|
1802 | |
|
|
1803 | PUSHs ((SV *)CvGV (slf_cv)); |
|
|
1804 | |
|
|
1805 | RETURNOP (slf_restore.op_first); |
|
|
1806 | } |
|
|
1807 | |
|
|
1808 | static void |
|
|
1809 | slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
|
|
1810 | { |
|
|
1811 | prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data); |
|
|
1812 | } |
|
|
1813 | |
|
|
1814 | static void |
|
|
1815 | slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1816 | { |
|
|
1817 | assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); |
|
|
1818 | |
|
|
1819 | frame->prepare = slf_prepare_set_stacklevel; |
|
|
1820 | frame->check = slf_check_nop; |
|
|
1821 | frame->data = (void *)SvIV (arg [0]); |
|
|
1822 | } |
|
|
1823 | |
|
|
1824 | static void |
|
|
1825 | slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
|
|
1826 | { |
|
|
1827 | SV **arg = (SV **)slf_frame.data; |
|
|
1828 | |
|
|
1829 | prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
|
|
1830 | } |
|
|
1831 | |
|
|
1832 | static void |
|
|
1833 | slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1834 | { |
|
|
1835 | if (items != 2) |
|
|
1836 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
|
|
1837 | |
|
|
1838 | frame->prepare = slf_prepare_transfer; |
|
|
1839 | frame->check = slf_check_nop; |
|
|
1840 | frame->data = (void *)arg; /* let's hope it will stay valid */ |
|
|
1841 | } |
|
|
1842 | |
|
|
1843 | static void |
|
|
1844 | slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1845 | { |
|
|
1846 | frame->prepare = prepare_schedule; |
|
|
1847 | frame->check = slf_check_nop; |
|
|
1848 | } |
|
|
1849 | |
|
|
1850 | static void |
|
|
1851 | slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1852 | { |
|
|
1853 | frame->prepare = prepare_cede; |
|
|
1854 | frame->check = slf_check_nop; |
|
|
1855 | } |
|
|
1856 | |
|
|
1857 | static void |
|
|
1858 | slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1859 | { |
|
|
1860 | frame->prepare = prepare_cede_notself; |
|
|
1861 | frame->check = slf_check_nop; |
|
|
1862 | } |
|
|
1863 | |
|
|
1864 | /* we hijack an hopefully unused CV flag for our purposes */ |
|
|
1865 | #define CVf_SLF 0x4000 |
|
|
1866 | |
|
|
1867 | /* |
|
|
1868 | * these not obviously related functions are all rolled into one |
|
|
1869 | * function to increase chances that they all will call transfer with the same |
|
|
1870 | * stack offset |
|
|
1871 | * SLF stands for "schedule-like-function". |
|
|
1872 | */ |
|
|
1873 | static OP * |
|
|
1874 | pp_slf (pTHX) |
|
|
1875 | { |
|
|
1876 | I32 checkmark; /* mark SP to see how many elements check has pushed */ |
|
|
1877 | |
|
|
1878 | /* set up the slf frame, unless it has already been set-up */ |
|
|
1879 | /* the latter happens when a new coro has been started */ |
|
|
1880 | /* or when a new cctx was attached to an existing coroutine */ |
|
|
1881 | if (expect_true (!slf_frame.prepare)) |
|
|
1882 | { |
|
|
1883 | /* first iteration */ |
|
|
1884 | dSP; |
|
|
1885 | SV **arg = PL_stack_base + TOPMARK + 1; |
|
|
1886 | int items = SP - arg; /* args without function object */ |
|
|
1887 | SV *gv = *sp; |
|
|
1888 | |
|
|
1889 | /* do a quick consistency check on the "function" object, and if it isn't */ |
|
|
1890 | /* for us, divert to the real entersub */ |
|
|
1891 | if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
|
|
1892 | return PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1893 | |
|
|
1894 | if (!(PL_op->op_flags & OPf_STACKED)) |
|
|
1895 | { |
|
|
1896 | /* ampersand-form of call, use @_ instead of stack */ |
|
|
1897 | AV *av = GvAV (PL_defgv); |
|
|
1898 | arg = AvARRAY (av); |
|
|
1899 | items = AvFILLp (av) + 1; |
|
|
1900 | } |
|
|
1901 | |
|
|
1902 | /* now call the init function, which needs to set up slf_frame */ |
|
|
1903 | ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
|
|
1904 | (aTHX_ &slf_frame, GvCV (gv), arg, items); |
|
|
1905 | |
|
|
1906 | /* pop args */ |
|
|
1907 | SP = PL_stack_base + POPMARK; |
|
|
1908 | |
|
|
1909 | PUTBACK; |
|
|
1910 | } |
|
|
1911 | |
|
|
1912 | /* now that we have a slf_frame, interpret it! */ |
|
|
1913 | /* we use a callback system not to make the code needlessly */ |
|
|
1914 | /* complicated, but so we can run multiple perl coros from one cctx */ |
|
|
1915 | |
|
|
1916 | do |
|
|
1917 | { |
|
|
1918 | struct coro_transfer_args ta; |
|
|
1919 | |
|
|
1920 | slf_frame.prepare (aTHX_ &ta); |
|
|
1921 | TRANSFER (ta, 0); |
|
|
1922 | |
|
|
1923 | checkmark = PL_stack_sp - PL_stack_base; |
|
|
1924 | } |
|
|
1925 | while (slf_frame.check (aTHX_ &slf_frame)); |
|
|
1926 | |
|
|
1927 | slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ |
|
|
1928 | |
|
|
1929 | /* return value handling - mostly like entersub */ |
|
|
1930 | { |
|
|
1931 | dSP; |
|
|
1932 | SV **bot = PL_stack_base + checkmark; |
|
|
1933 | int gimme = GIMME_V; |
|
|
1934 | |
|
|
1935 | /* make sure we put something on the stack in scalar context */ |
|
|
1936 | if (gimme == G_SCALAR) |
|
|
1937 | { |
|
|
1938 | if (sp == bot) |
|
|
1939 | XPUSHs (&PL_sv_undef); |
|
|
1940 | |
|
|
1941 | SP = bot + 1; |
|
|
1942 | } |
|
|
1943 | |
|
|
1944 | PUTBACK; |
|
|
1945 | } |
|
|
1946 | |
|
|
1947 | /* exception handling */ |
|
|
1948 | if (expect_false (coro_throw)) |
|
|
1949 | { |
|
|
1950 | SV *exception = sv_2mortal (coro_throw); |
|
|
1951 | |
|
|
1952 | coro_throw = 0; |
|
|
1953 | sv_setsv (ERRSV, exception); |
|
|
1954 | croak (0); |
|
|
1955 | } |
|
|
1956 | |
|
|
1957 | return NORMAL; |
|
|
1958 | } |
|
|
1959 | |
|
|
1960 | static void |
|
|
1961 | api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax) |
|
|
1962 | { |
|
|
1963 | int i; |
|
|
1964 | SV **arg = PL_stack_base + ax; |
|
|
1965 | int items = PL_stack_sp - arg + 1; |
|
|
1966 | |
|
|
1967 | assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
|
|
1968 | |
|
|
1969 | if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
|
|
1970 | && PL_op->op_ppaddr != pp_slf) |
|
|
1971 | croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
|
|
1972 | |
|
|
1973 | CvFLAGS (cv) |= CVf_SLF; |
|
|
1974 | CvXSUBANY (cv).any_ptr = (void *)init_cb; |
|
|
1975 | slf_cv = cv; |
|
|
1976 | |
|
|
1977 | /* we patch the op, and then re-run the whole call */ |
|
|
1978 | /* we have to put the same argument on the stack for this to work */ |
|
|
1979 | /* and this will be done by pp_restore */ |
|
|
1980 | slf_restore.op_next = (OP *)&slf_restore; |
|
|
1981 | slf_restore.op_type = OP_CUSTOM; |
|
|
1982 | slf_restore.op_ppaddr = pp_restore; |
|
|
1983 | slf_restore.op_first = PL_op; |
|
|
1984 | |
|
|
1985 | slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */ |
|
|
1986 | |
|
|
1987 | if (PL_op->op_flags & OPf_STACKED) |
|
|
1988 | { |
|
|
1989 | if (items > slf_arga) |
|
|
1990 | { |
|
|
1991 | slf_arga = items; |
|
|
1992 | free (slf_argv); |
|
|
1993 | slf_argv = malloc (slf_arga * sizeof (SV *)); |
|
|
1994 | } |
|
|
1995 | |
|
|
1996 | slf_argc = items; |
|
|
1997 | |
|
|
1998 | for (i = 0; i < items; ++i) |
|
|
1999 | slf_argv [i] = SvREFCNT_inc (arg [i]); |
|
|
2000 | } |
|
|
2001 | else |
|
|
2002 | slf_argc = 0; |
|
|
2003 | |
|
|
2004 | PL_op->op_ppaddr = pp_slf; |
|
|
2005 | PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ |
|
|
2006 | |
|
|
2007 | PL_op = (OP *)&slf_restore; |
|
|
2008 | } |
|
|
2009 | |
|
|
2010 | /*****************************************************************************/ |
|
|
2011 | |
|
|
2012 | static void |
|
|
2013 | coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
|
|
2014 | { |
|
|
2015 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2016 | IV count = SvIVX (count_sv); |
|
|
2017 | |
|
|
2018 | count += adjust; |
|
|
2019 | SvIVX (count_sv) = count; |
|
|
2020 | |
|
|
2021 | /* now wake up as many waiters as are expected to lock */ |
|
|
2022 | while (count > 0 && AvFILLp (av) > 0) |
|
|
2023 | { |
|
|
2024 | SV *cb; |
|
|
2025 | |
|
|
2026 | /* swap first two elements so we can shift a waiter */ |
|
|
2027 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2028 | AvARRAY (av)[1] = count_sv; |
|
|
2029 | cb = av_shift (av); |
|
|
2030 | |
|
|
2031 | if (SvOBJECT (cb)) |
|
|
2032 | api_ready (aTHX_ cb); |
|
|
2033 | else |
|
|
2034 | croak ("callbacks not yet supported"); |
|
|
2035 | |
|
|
2036 | SvREFCNT_dec (cb); |
|
|
2037 | |
|
|
2038 | --count; |
|
|
2039 | } |
|
|
2040 | } |
|
|
2041 | |
|
|
2042 | static void |
|
|
2043 | coro_semaphore_on_destroy (pTHX_ struct coro *coro) |
|
|
2044 | { |
|
|
2045 | /* call $sem->adjust (0) to possibly wake up some other waiters */ |
|
|
2046 | coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); |
|
|
2047 | } |
|
|
2048 | |
|
|
2049 | static int |
|
|
2050 | slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
|
|
2051 | { |
|
|
2052 | AV *av = (AV *)frame->data; |
|
|
2053 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2054 | |
|
|
2055 | if (SvIVX (count_sv) > 0) |
|
|
2056 | { |
|
|
2057 | SvSTATE_current->on_destroy = 0; |
|
|
2058 | SvIVX (count_sv) = SvIVX (count_sv) - 1; |
|
|
2059 | return 0; |
|
|
2060 | } |
|
|
2061 | else |
|
|
2062 | { |
|
|
2063 | int i; |
|
|
2064 | /* if we were woken up but can't down, we look through the whole */ |
|
|
2065 | /* waiters list and only add us if we aren't in there already */ |
|
|
2066 | /* this avoids some degenerate memory usage cases */ |
|
|
2067 | |
|
|
2068 | for (i = 1; i <= AvFILLp (av); ++i) |
|
|
2069 | if (AvARRAY (av)[i] == SvRV (coro_current)) |
|
|
2070 | return 1; |
|
|
2071 | |
|
|
2072 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2073 | return 1; |
|
|
2074 | } |
|
|
2075 | } |
|
|
2076 | |
|
|
2077 | static void |
|
|
2078 | slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2079 | { |
|
|
2080 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2081 | |
|
|
2082 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
2083 | { |
|
|
2084 | frame->data = (void *)av; |
|
|
2085 | frame->prepare = prepare_nop; |
|
|
2086 | SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
|
|
2087 | } |
|
|
2088 | else |
|
|
2089 | { |
|
|
2090 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2091 | |
|
|
2092 | frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
|
|
2093 | frame->prepare = prepare_schedule; |
|
|
2094 | |
|
|
2095 | /* to avoid race conditions when a woken-up coro gets terminated */ |
|
|
2096 | /* we arrange for a temporary on_destroy that calls adjust (0) */ |
|
|
2097 | assert (!SvSTATE_current->on_destroy);//D |
|
|
2098 | SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
|
|
2099 | } |
|
|
2100 | |
|
|
2101 | frame->check = slf_check_semaphore_down; |
|
|
2102 | |
|
|
2103 | } |
|
|
2104 | |
|
|
2105 | /*****************************************************************************/ |
|
|
2106 | |
|
|
2107 | #define GENSUB_ARG CvXSUBANY (cv).any_ptr |
|
|
2108 | |
|
|
2109 | /* create a closure from XS, returns a code reference */ |
|
|
2110 | /* the arg can be accessed via GENSUB_ARG from the callback */ |
|
|
2111 | /* the callback must use dXSARGS/XSRETURN */ |
|
|
2112 | static SV * |
|
|
2113 | gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
|
|
2114 | { |
|
|
2115 | CV *cv = (CV *)NEWSV (0, 0); |
|
|
2116 | |
|
|
2117 | sv_upgrade ((SV *)cv, SVt_PVCV); |
|
|
2118 | |
|
|
2119 | CvANON_on (cv); |
|
|
2120 | CvISXSUB_on (cv); |
|
|
2121 | CvXSUB (cv) = xsub; |
|
|
2122 | GENSUB_ARG = arg; |
|
|
2123 | |
|
|
2124 | return newRV_noinc ((SV *)cv); |
|
|
2125 | } |
|
|
2126 | |
|
|
2127 | /*****************************************************************************/ |
|
|
2128 | |
777 | MODULE = Coro::State PACKAGE = Coro::State |
2129 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
778 | |
2130 | |
779 | PROTOTYPES: ENABLE |
2131 | PROTOTYPES: DISABLE |
780 | |
2132 | |
781 | BOOT: |
2133 | BOOT: |
782 | { /* {} necessary for stoopid perl-5.6.x */ |
2134 | { |
783 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
2135 | #ifdef USE_ITHREADS |
784 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
2136 | # if CORO_PTHREAD |
|
|
2137 | coro_thx = PERL_GET_CONTEXT; |
|
|
2138 | # endif |
|
|
2139 | #endif |
|
|
2140 | BOOT_PAGESIZE; |
|
|
2141 | |
|
|
2142 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
|
|
2143 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
|
|
2144 | |
|
|
2145 | orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
|
|
2146 | orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
|
|
2147 | orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
|
|
2148 | |
|
|
2149 | hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
|
|
2150 | rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
|
|
2151 | rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
|
|
2152 | |
785 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
2153 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
786 | |
2154 | |
787 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
2155 | newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
788 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
2156 | newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
789 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
2157 | newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
790 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
2158 | newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
791 | |
|
|
792 | if (!padlist_cache) |
|
|
793 | padlist_cache = newHV (); |
|
|
794 | |
2159 | |
795 | main_mainstack = PL_mainstack; |
2160 | main_mainstack = PL_mainstack; |
796 | } |
2161 | main_top_env = PL_top_env; |
797 | |
2162 | |
798 | Coro::State |
2163 | while (main_top_env->je_prev) |
799 | _newprocess(args) |
2164 | main_top_env = main_top_env->je_prev; |
800 | SV * args |
2165 | |
801 | PROTOTYPE: $ |
2166 | { |
|
|
2167 | SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); |
|
|
2168 | |
|
|
2169 | if (!PL_custom_op_names) PL_custom_op_names = newHV (); |
|
|
2170 | hv_store_ent (PL_custom_op_names, slf, |
|
|
2171 | newSVpv ("coro_slf", 0), 0); |
|
|
2172 | |
|
|
2173 | if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); |
|
|
2174 | hv_store_ent (PL_custom_op_descs, slf, |
|
|
2175 | newSVpv ("coro schedule like function", 0), 0); |
|
|
2176 | } |
|
|
2177 | |
|
|
2178 | coroapi.ver = CORO_API_VERSION; |
|
|
2179 | coroapi.rev = CORO_API_REVISION; |
|
|
2180 | |
|
|
2181 | coroapi.transfer = api_transfer; |
|
|
2182 | |
|
|
2183 | coroapi.sv_state = SvSTATE_; |
|
|
2184 | coroapi.execute_slf = api_execute_slf; |
|
|
2185 | coroapi.prepare_nop = prepare_nop; |
|
|
2186 | coroapi.prepare_schedule = prepare_schedule; |
|
|
2187 | coroapi.prepare_cede = prepare_cede; |
|
|
2188 | coroapi.prepare_cede_notself = prepare_cede_notself; |
|
|
2189 | |
|
|
2190 | { |
|
|
2191 | SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
|
|
2192 | |
|
|
2193 | if (!svp) croak ("Time::HiRes is required"); |
|
|
2194 | if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); |
|
|
2195 | |
|
|
2196 | nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
|
|
2197 | } |
|
|
2198 | |
|
|
2199 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
|
|
2200 | } |
|
|
2201 | |
|
|
2202 | SV * |
|
|
2203 | new (char *klass, ...) |
802 | CODE: |
2204 | CODE: |
803 | Coro__State coro; |
2205 | { |
|
|
2206 | struct coro *coro; |
|
|
2207 | MAGIC *mg; |
|
|
2208 | HV *hv; |
|
|
2209 | int i; |
804 | |
2210 | |
805 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
|
|
806 | croak ("Coro::State::_newprocess expects an arrayref"); |
|
|
807 | |
|
|
808 | New (0, coro, 1, struct coro); |
2211 | Newz (0, coro, 1, struct coro); |
|
|
2212 | coro->args = newAV (); |
|
|
2213 | coro->flags = CF_NEW; |
809 | |
2214 | |
810 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
2215 | if (coro_first) coro_first->prev = coro; |
811 | coro->mainstack = 0; /* actual work is done inside transfer */ |
2216 | coro->next = coro_first; |
812 | coro->stack = 0; |
2217 | coro_first = coro; |
813 | |
2218 | |
814 | RETVAL = coro; |
2219 | coro->hv = hv = newHV (); |
|
|
2220 | mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
|
|
2221 | mg->mg_flags |= MGf_DUP; |
|
|
2222 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
|
|
2223 | |
|
|
2224 | av_extend (coro->args, items - 1); |
|
|
2225 | for (i = 1; i < items; i++) |
|
|
2226 | av_push (coro->args, newSVsv (ST (i))); |
|
|
2227 | } |
815 | OUTPUT: |
2228 | OUTPUT: |
816 | RETVAL |
2229 | RETVAL |
817 | |
2230 | |
818 | void |
2231 | void |
819 | transfer(prev, next, flags) |
2232 | _set_stacklevel (...) |
820 | Coro::State_or_hashref prev |
2233 | CODE: |
821 | Coro::State_or_hashref next |
2234 | CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel); |
822 | int flags |
|
|
823 | PROTOTYPE: @ |
|
|
824 | CODE: |
|
|
825 | PUTBACK; |
|
|
826 | transfer (aTHX_ prev, next, flags); |
|
|
827 | SPAGAIN; |
|
|
828 | |
2235 | |
829 | void |
2236 | void |
830 | DESTROY(coro) |
2237 | transfer (...) |
831 | Coro::State coro |
2238 | PROTOTYPE: $$ |
832 | CODE: |
2239 | CODE: |
|
|
2240 | CORO_EXECUTE_SLF_XS (slf_init_transfer); |
833 | |
2241 | |
834 | if (coro->mainstack && coro->mainstack != main_mainstack) |
2242 | bool |
|
|
2243 | _destroy (SV *coro_sv) |
|
|
2244 | CODE: |
|
|
2245 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
|
|
2246 | OUTPUT: |
|
|
2247 | RETVAL |
|
|
2248 | |
|
|
2249 | void |
|
|
2250 | _exit (int code) |
|
|
2251 | PROTOTYPE: $ |
|
|
2252 | CODE: |
|
|
2253 | _exit (code); |
|
|
2254 | |
|
|
2255 | int |
|
|
2256 | cctx_stacksize (int new_stacksize = 0) |
|
|
2257 | PROTOTYPE: ;$ |
|
|
2258 | CODE: |
|
|
2259 | RETVAL = cctx_stacksize; |
|
|
2260 | if (new_stacksize) |
|
|
2261 | { |
|
|
2262 | cctx_stacksize = new_stacksize; |
|
|
2263 | ++cctx_gen; |
|
|
2264 | } |
|
|
2265 | OUTPUT: |
|
|
2266 | RETVAL |
|
|
2267 | |
|
|
2268 | int |
|
|
2269 | cctx_max_idle (int max_idle = 0) |
|
|
2270 | PROTOTYPE: ;$ |
|
|
2271 | CODE: |
|
|
2272 | RETVAL = cctx_max_idle; |
|
|
2273 | if (max_idle > 1) |
|
|
2274 | cctx_max_idle = max_idle; |
|
|
2275 | OUTPUT: |
|
|
2276 | RETVAL |
|
|
2277 | |
|
|
2278 | int |
|
|
2279 | cctx_count () |
|
|
2280 | PROTOTYPE: |
|
|
2281 | CODE: |
|
|
2282 | RETVAL = cctx_count; |
|
|
2283 | OUTPUT: |
|
|
2284 | RETVAL |
|
|
2285 | |
|
|
2286 | int |
|
|
2287 | cctx_idle () |
|
|
2288 | PROTOTYPE: |
|
|
2289 | CODE: |
|
|
2290 | RETVAL = cctx_idle; |
|
|
2291 | OUTPUT: |
|
|
2292 | RETVAL |
|
|
2293 | |
|
|
2294 | void |
|
|
2295 | list () |
|
|
2296 | PROTOTYPE: |
|
|
2297 | PPCODE: |
|
|
2298 | { |
|
|
2299 | struct coro *coro; |
|
|
2300 | for (coro = coro_first; coro; coro = coro->next) |
|
|
2301 | if (coro->hv) |
|
|
2302 | XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
|
|
2303 | } |
|
|
2304 | |
|
|
2305 | void |
|
|
2306 | call (Coro::State coro, SV *coderef) |
|
|
2307 | ALIAS: |
|
|
2308 | eval = 1 |
|
|
2309 | CODE: |
|
|
2310 | { |
|
|
2311 | if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
835 | { |
2312 | { |
836 | struct coro temp; |
2313 | struct coro temp; |
837 | |
2314 | |
838 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
2315 | if (!(coro->flags & CF_RUNNING)) |
839 | LOAD(aTHX_ coro); |
2316 | { |
|
|
2317 | PUTBACK; |
|
|
2318 | save_perl (aTHX_ &temp); |
|
|
2319 | load_perl (aTHX_ coro); |
|
|
2320 | } |
840 | |
2321 | |
841 | destroy_stacks (aTHX); |
2322 | { |
|
|
2323 | dSP; |
|
|
2324 | ENTER; |
|
|
2325 | SAVETMPS; |
|
|
2326 | PUTBACK; |
|
|
2327 | PUSHSTACK; |
|
|
2328 | PUSHMARK (SP); |
842 | |
2329 | |
843 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
2330 | if (ix) |
|
|
2331 | eval_sv (coderef, 0); |
|
|
2332 | else |
|
|
2333 | call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
844 | |
2334 | |
845 | coro->mainstack = 0; |
2335 | POPSTACK; |
|
|
2336 | SPAGAIN; |
|
|
2337 | FREETMPS; |
|
|
2338 | LEAVE; |
|
|
2339 | PUTBACK; |
|
|
2340 | } |
|
|
2341 | |
|
|
2342 | if (!(coro->flags & CF_RUNNING)) |
|
|
2343 | { |
|
|
2344 | save_perl (aTHX_ coro); |
|
|
2345 | load_perl (aTHX_ &temp); |
|
|
2346 | SPAGAIN; |
|
|
2347 | } |
846 | } |
2348 | } |
|
|
2349 | } |
847 | |
2350 | |
848 | deallocate_stack (coro); |
2351 | SV * |
849 | |
2352 | is_ready (Coro::State coro) |
850 | Safefree (coro); |
2353 | PROTOTYPE: $ |
|
|
2354 | ALIAS: |
|
|
2355 | is_ready = CF_READY |
|
|
2356 | is_running = CF_RUNNING |
|
|
2357 | is_new = CF_NEW |
|
|
2358 | is_destroyed = CF_DESTROYED |
|
|
2359 | CODE: |
|
|
2360 | RETVAL = boolSV (coro->flags & ix); |
|
|
2361 | OUTPUT: |
|
|
2362 | RETVAL |
851 | |
2363 | |
852 | void |
2364 | void |
853 | flush() |
2365 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
854 | CODE: |
2366 | PROTOTYPE: $;$ |
855 | #ifdef MAY_FLUSH |
2367 | CODE: |
856 | flush_padlist_cache (); |
2368 | { |
857 | #endif |
2369 | struct coro *current = SvSTATE_current; |
|
|
2370 | SV **throwp = self == current ? &coro_throw : &self->throw; |
|
|
2371 | SvREFCNT_dec (*throwp); |
|
|
2372 | *throwp = SvOK (throw) ? newSVsv (throw) : 0; |
|
|
2373 | } |
858 | |
2374 | |
859 | void |
2375 | void |
860 | _exit(code) |
2376 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
861 | int code |
2377 | PROTOTYPE: $;$ |
|
|
2378 | C_ARGS: aTHX_ coro, flags |
|
|
2379 | |
|
|
2380 | SV * |
|
|
2381 | has_cctx (Coro::State coro) |
862 | PROTOTYPE: $ |
2382 | PROTOTYPE: $ |
863 | CODE: |
2383 | CODE: |
864 | #if defined(__GLIBC__) || _POSIX_C_SOURCE |
2384 | RETVAL = boolSV (!!coro->cctx); |
865 | _exit (code); |
2385 | OUTPUT: |
866 | #else |
2386 | RETVAL |
867 | signal (SIGTERM, SIG_DFL); |
|
|
868 | raise (SIGTERM); |
|
|
869 | exit (code); |
|
|
870 | #endif |
|
|
871 | |
2387 | |
872 | MODULE = Coro::State PACKAGE = Coro::Cont |
2388 | int |
|
|
2389 | is_traced (Coro::State coro) |
|
|
2390 | PROTOTYPE: $ |
|
|
2391 | CODE: |
|
|
2392 | RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
|
|
2393 | OUTPUT: |
|
|
2394 | RETVAL |
873 | |
2395 | |
874 | # this is slightly dirty (should expose a c-level api) |
2396 | UV |
|
|
2397 | rss (Coro::State coro) |
|
|
2398 | PROTOTYPE: $ |
|
|
2399 | ALIAS: |
|
|
2400 | usecount = 1 |
|
|
2401 | CODE: |
|
|
2402 | switch (ix) |
|
|
2403 | { |
|
|
2404 | case 0: RETVAL = coro_rss (aTHX_ coro); break; |
|
|
2405 | case 1: RETVAL = coro->usecount; break; |
|
|
2406 | } |
|
|
2407 | OUTPUT: |
|
|
2408 | RETVAL |
875 | |
2409 | |
876 | void |
2410 | void |
877 | yield(...) |
2411 | force_cctx () |
|
|
2412 | PROTOTYPE: |
|
|
2413 | CODE: |
|
|
2414 | SvSTATE_current->cctx->idle_sp = 0; |
|
|
2415 | |
|
|
2416 | void |
|
|
2417 | swap_defsv (Coro::State self) |
878 | PROTOTYPE: @ |
2418 | PROTOTYPE: $ |
|
|
2419 | ALIAS: |
|
|
2420 | swap_defav = 1 |
879 | CODE: |
2421 | CODE: |
880 | static SV *returnstk; |
2422 | if (!self->slot) |
881 | SV *sv; |
2423 | croak ("cannot swap state with coroutine that has no saved state,"); |
|
|
2424 | else |
|
|
2425 | { |
|
|
2426 | SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
|
|
2427 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
|
|
2428 | |
|
|
2429 | SV *tmp = *src; *src = *dst; *dst = tmp; |
|
|
2430 | } |
|
|
2431 | |
|
|
2432 | MODULE = Coro::State PACKAGE = Coro |
|
|
2433 | |
|
|
2434 | BOOT: |
|
|
2435 | { |
|
|
2436 | int i; |
|
|
2437 | |
|
|
2438 | av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
|
|
2439 | sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
|
|
2440 | sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
|
|
2441 | |
|
|
2442 | coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); |
|
|
2443 | SvREADONLY_on (coro_current); |
|
|
2444 | |
|
|
2445 | coro_stash = gv_stashpv ("Coro", TRUE); |
|
|
2446 | |
|
|
2447 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
|
|
2448 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
|
|
2449 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
|
|
2450 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
|
|
2451 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
|
|
2452 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
|
|
2453 | |
|
|
2454 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
|
|
2455 | coro_ready[i] = newAV (); |
|
|
2456 | |
|
|
2457 | { |
|
|
2458 | SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
|
|
2459 | |
|
|
2460 | coroapi.schedule = api_schedule; |
|
|
2461 | coroapi.cede = api_cede; |
|
|
2462 | coroapi.cede_notself = api_cede_notself; |
|
|
2463 | coroapi.ready = api_ready; |
|
|
2464 | coroapi.is_ready = api_is_ready; |
|
|
2465 | coroapi.nready = coro_nready; |
|
|
2466 | coroapi.current = coro_current; |
|
|
2467 | |
|
|
2468 | GCoroAPI = &coroapi; |
|
|
2469 | sv_setiv (sv, (IV)&coroapi); |
|
|
2470 | SvREADONLY_on (sv); |
|
|
2471 | } |
|
|
2472 | } |
|
|
2473 | |
|
|
2474 | void |
|
|
2475 | schedule (...) |
|
|
2476 | CODE: |
|
|
2477 | CORO_EXECUTE_SLF_XS (slf_init_schedule); |
|
|
2478 | |
|
|
2479 | void |
|
|
2480 | cede (...) |
|
|
2481 | CODE: |
|
|
2482 | CORO_EXECUTE_SLF_XS (slf_init_cede); |
|
|
2483 | |
|
|
2484 | void |
|
|
2485 | cede_notself (...) |
|
|
2486 | CODE: |
|
|
2487 | CORO_EXECUTE_SLF_XS (slf_init_cede_notself); |
|
|
2488 | |
|
|
2489 | void |
|
|
2490 | _set_current (SV *current) |
|
|
2491 | PROTOTYPE: $ |
|
|
2492 | CODE: |
|
|
2493 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
2494 | SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
|
|
2495 | |
|
|
2496 | void |
|
|
2497 | _set_readyhook (SV *hook) |
|
|
2498 | PROTOTYPE: $ |
|
|
2499 | CODE: |
|
|
2500 | SvREFCNT_dec (coro_readyhook); |
|
|
2501 | coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; |
|
|
2502 | |
|
|
2503 | int |
|
|
2504 | prio (Coro::State coro, int newprio = 0) |
|
|
2505 | PROTOTYPE: $;$ |
|
|
2506 | ALIAS: |
|
|
2507 | nice = 1 |
|
|
2508 | CODE: |
|
|
2509 | { |
|
|
2510 | RETVAL = coro->prio; |
|
|
2511 | |
|
|
2512 | if (items > 1) |
|
|
2513 | { |
|
|
2514 | if (ix) |
|
|
2515 | newprio = coro->prio - newprio; |
|
|
2516 | |
|
|
2517 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
2518 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
2519 | |
|
|
2520 | coro->prio = newprio; |
|
|
2521 | } |
|
|
2522 | } |
|
|
2523 | OUTPUT: |
|
|
2524 | RETVAL |
|
|
2525 | |
|
|
2526 | SV * |
|
|
2527 | ready (SV *self) |
|
|
2528 | PROTOTYPE: $ |
|
|
2529 | CODE: |
|
|
2530 | RETVAL = boolSV (api_ready (aTHX_ self)); |
|
|
2531 | OUTPUT: |
|
|
2532 | RETVAL |
|
|
2533 | |
|
|
2534 | int |
|
|
2535 | nready (...) |
|
|
2536 | PROTOTYPE: |
|
|
2537 | CODE: |
|
|
2538 | RETVAL = coro_nready; |
|
|
2539 | OUTPUT: |
|
|
2540 | RETVAL |
|
|
2541 | |
|
|
2542 | # for async_pool speedup |
|
|
2543 | void |
|
|
2544 | _pool_1 (SV *cb) |
|
|
2545 | CODE: |
|
|
2546 | { |
|
|
2547 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2548 | struct coro *coro = SvSTATE_hv ((SV *)hv); |
882 | AV *defav = GvAV (PL_defgv); |
2549 | AV *defav = GvAV (PL_defgv); |
883 | struct coro *prev, *next; |
2550 | SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); |
|
|
2551 | AV *invoke_av; |
|
|
2552 | int i, len; |
884 | |
2553 | |
885 | if (!returnstk) |
2554 | if (!invoke) |
886 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
2555 | { |
|
|
2556 | SV *old = PL_diehook; |
|
|
2557 | PL_diehook = 0; |
|
|
2558 | SvREFCNT_dec (old); |
|
|
2559 | croak ("\3async_pool terminate\2\n"); |
|
|
2560 | } |
887 | |
2561 | |
888 | /* set up @_ -- ugly */ |
2562 | SvREFCNT_dec (coro->saved_deffh); |
889 | av_clear (defav); |
2563 | coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
|
|
2564 | |
|
|
2565 | hv_store (hv, "desc", sizeof ("desc") - 1, |
|
|
2566 | newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
|
|
2567 | |
|
|
2568 | invoke_av = (AV *)SvRV (invoke); |
|
|
2569 | len = av_len (invoke_av); |
|
|
2570 | |
|
|
2571 | sv_setsv (cb, AvARRAY (invoke_av)[0]); |
|
|
2572 | |
|
|
2573 | if (len > 0) |
|
|
2574 | { |
890 | av_fill (defav, items - 1); |
2575 | av_fill (defav, len - 1); |
891 | while (items--) |
2576 | for (i = 0; i < len; ++i) |
892 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
2577 | av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); |
|
|
2578 | } |
|
|
2579 | } |
893 | |
2580 | |
894 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
2581 | void |
895 | sv = av_pop ((AV *)SvRV (returnstk)); |
2582 | _pool_2 (SV *cb) |
896 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
2583 | CODE: |
897 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
2584 | { |
|
|
2585 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2586 | struct coro *coro = SvSTATE_hv ((SV *)hv); |
|
|
2587 | |
|
|
2588 | sv_setsv (cb, &PL_sv_undef); |
|
|
2589 | |
|
|
2590 | SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
|
|
2591 | coro->saved_deffh = 0; |
|
|
2592 | |
|
|
2593 | if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
|
|
2594 | || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
|
|
2595 | { |
|
|
2596 | SV *old = PL_diehook; |
|
|
2597 | PL_diehook = 0; |
898 | SvREFCNT_dec (sv); |
2598 | SvREFCNT_dec (old); |
|
|
2599 | croak ("\3async_pool terminate\2\n"); |
|
|
2600 | } |
899 | |
2601 | |
900 | transfer(aTHX_ prev, next, 0); |
2602 | av_clear (GvAV (PL_defgv)); |
|
|
2603 | hv_store (hv, "desc", sizeof ("desc") - 1, |
|
|
2604 | newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
901 | |
2605 | |
|
|
2606 | coro->prio = 0; |
|
|
2607 | |
|
|
2608 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
|
|
2609 | api_trace (aTHX_ coro_current, 0); |
|
|
2610 | |
|
|
2611 | av_push (av_async_pool, newSVsv (coro_current)); |
|
|
2612 | } |
|
|
2613 | |
|
|
2614 | |
902 | MODULE = Coro::State PACKAGE = Coro |
2615 | MODULE = Coro::State PACKAGE = Coro::AIO |
903 | |
2616 | |
904 | # this is slightly dirty (should expose a c-level api) |
2617 | void |
|
|
2618 | _get_state (SV *self) |
|
|
2619 | PROTOTYPE: $ |
|
|
2620 | PPCODE: |
|
|
2621 | { |
|
|
2622 | AV *defav = GvAV (PL_defgv); |
|
|
2623 | AV *av = newAV (); |
|
|
2624 | int i; |
|
|
2625 | SV *data_sv = newSV (sizeof (struct io_state)); |
|
|
2626 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2627 | SvCUR_set (data_sv, sizeof (struct io_state)); |
|
|
2628 | SvPOK_only (data_sv); |
|
|
2629 | |
|
|
2630 | data->errorno = errno; |
|
|
2631 | data->laststype = PL_laststype; |
|
|
2632 | data->laststatval = PL_laststatval; |
|
|
2633 | data->statcache = PL_statcache; |
|
|
2634 | |
|
|
2635 | av_extend (av, AvFILLp (defav) + 1 + 1); |
|
|
2636 | |
|
|
2637 | for (i = 0; i <= AvFILLp (defav); ++i) |
|
|
2638 | av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); |
|
|
2639 | |
|
|
2640 | av_push (av, data_sv); |
|
|
2641 | |
|
|
2642 | XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
2643 | |
|
|
2644 | api_ready (aTHX_ self); |
|
|
2645 | } |
|
|
2646 | |
|
|
2647 | void |
|
|
2648 | _set_state (SV *state) |
|
|
2649 | PROTOTYPE: $ |
|
|
2650 | PPCODE: |
|
|
2651 | { |
|
|
2652 | AV *av = (AV *)SvRV (state); |
|
|
2653 | struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); |
|
|
2654 | int i; |
|
|
2655 | |
|
|
2656 | errno = data->errorno; |
|
|
2657 | PL_laststype = data->laststype; |
|
|
2658 | PL_laststatval = data->laststatval; |
|
|
2659 | PL_statcache = data->statcache; |
|
|
2660 | |
|
|
2661 | EXTEND (SP, AvFILLp (av)); |
|
|
2662 | for (i = 0; i < AvFILLp (av); ++i) |
|
|
2663 | PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); |
|
|
2664 | } |
|
|
2665 | |
|
|
2666 | |
|
|
2667 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
905 | |
2668 | |
906 | BOOT: |
2669 | BOOT: |
907 | { |
2670 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
908 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
909 | coro_ready = newAV (); |
|
|
910 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
911 | } |
|
|
912 | |
2671 | |
913 | void |
2672 | void |
914 | ready(self) |
2673 | _schedule (...) |
915 | SV * self |
|
|
916 | CODE: |
2674 | CODE: |
917 | av_push (coro_ready, SvREFCNT_inc (self)); |
2675 | { |
|
|
2676 | static int incede; |
|
|
2677 | |
|
|
2678 | api_cede_notself (aTHX); |
|
|
2679 | |
|
|
2680 | ++incede; |
|
|
2681 | while (coro_nready >= incede && api_cede (aTHX)) |
|
|
2682 | ; |
|
|
2683 | |
|
|
2684 | sv_setsv (sv_activity, &PL_sv_undef); |
|
|
2685 | if (coro_nready >= incede) |
|
|
2686 | { |
|
|
2687 | PUSHMARK (SP); |
|
|
2688 | PUTBACK; |
|
|
2689 | call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); |
|
|
2690 | SPAGAIN; |
|
|
2691 | } |
|
|
2692 | |
|
|
2693 | --incede; |
|
|
2694 | } |
|
|
2695 | |
|
|
2696 | |
|
|
2697 | MODULE = Coro::State PACKAGE = PerlIO::cede |
|
|
2698 | |
|
|
2699 | BOOT: |
|
|
2700 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
|
|
2701 | |
|
|
2702 | MODULE = Coro::State PACKAGE = Coro::Semaphore |
|
|
2703 | |
|
|
2704 | SV * |
|
|
2705 | new (SV *klass, SV *count_ = 0) |
|
|
2706 | CODE: |
|
|
2707 | { |
|
|
2708 | /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
|
|
2709 | AV *av = newAV (); |
|
|
2710 | av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); |
|
|
2711 | RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); |
|
|
2712 | } |
|
|
2713 | OUTPUT: |
|
|
2714 | RETVAL |
|
|
2715 | |
|
|
2716 | SV * |
|
|
2717 | count (SV *self) |
|
|
2718 | CODE: |
|
|
2719 | RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); |
|
|
2720 | OUTPUT: |
|
|
2721 | RETVAL |
918 | |
2722 | |
919 | void |
2723 | void |
920 | schedule(...) |
2724 | up (SV *self, int adjust = 1) |
921 | ALIAS: |
2725 | ALIAS: |
922 | cede = 1 |
2726 | adjust = 1 |
923 | CODE: |
2727 | CODE: |
924 | SV *prev = GvSV (coro_current); |
2728 | coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); |
925 | SV *next = av_shift (coro_ready); |
|
|
926 | |
2729 | |
927 | if (next == &PL_sv_undef) |
2730 | void |
928 | next = SvREFCNT_inc (GvSV (coro_idle)); |
2731 | down (SV *self) |
|
|
2732 | CODE: |
|
|
2733 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); |
929 | |
2734 | |
930 | if (ix) |
2735 | void |
931 | av_push (coro_ready, SvREFCNT_inc (prev)); |
2736 | try (SV *self) |
|
|
2737 | PPCODE: |
|
|
2738 | { |
|
|
2739 | AV *av = (AV *)SvRV (self); |
|
|
2740 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2741 | IV count = SvIVX (count_sv); |
932 | |
2742 | |
933 | GvSV (coro_current) = SvREFCNT_inc (next); |
2743 | if (count > 0) |
934 | transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"), |
|
|
935 | sv_to_coro (next, "Coro::schedule", "next coroutine"), |
|
|
936 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
937 | SvREFCNT_dec (next); |
|
|
938 | SvREFCNT_dec (prev); |
|
|
939 | |
2744 | { |
|
|
2745 | --count; |
|
|
2746 | SvIVX (count_sv) = count; |
|
|
2747 | XSRETURN_YES; |
|
|
2748 | } |
|
|
2749 | else |
|
|
2750 | XSRETURN_NO; |
|
|
2751 | } |
|
|
2752 | |
|
|
2753 | void |
|
|
2754 | waiters (SV *self) |
|
|
2755 | CODE: |
|
|
2756 | { |
|
|
2757 | AV *av = (AV *)SvRV (self); |
|
|
2758 | |
|
|
2759 | if (GIMME_V == G_SCALAR) |
|
|
2760 | XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); |
|
|
2761 | else |
|
|
2762 | { |
|
|
2763 | int i; |
|
|
2764 | EXTEND (SP, AvFILLp (av) + 1 - 1); |
|
|
2765 | for (i = 1; i <= AvFILLp (av); ++i) |
|
|
2766 | PUSHs (newSVsv (AvARRAY (av)[i])); |
|
|
2767 | } |
|
|
2768 | } |
|
|
2769 | |