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1 | #include "libcoro/coro.c" |
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2 | |
1 | #include "EXTERN.h" |
3 | #include "EXTERN.h" |
2 | #include "perl.h" |
4 | #include "perl.h" |
3 | #include "XSUB.h" |
5 | #include "XSUB.h" |
4 | |
6 | |
5 | #include "libcoro/coro.c" |
7 | #include "patchlevel.h" |
6 | |
8 | |
7 | #include <signal.h> |
9 | #include <stdio.h> |
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10 | #include <errno.h> |
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11 | #include <assert.h> |
8 | |
12 | |
9 | #ifdef HAVE_MMAP |
13 | #ifdef HAVE_MMAP |
10 | # include <unistd.h> |
14 | # include <unistd.h> |
11 | # include <sys/mman.h> |
15 | # include <sys/mman.h> |
12 | # ifndef MAP_ANONYMOUS |
16 | # ifndef MAP_ANONYMOUS |
… | |
… | |
14 | # define MAP_ANONYMOUS MAP_ANON |
18 | # define MAP_ANONYMOUS MAP_ANON |
15 | # else |
19 | # else |
16 | # undef HAVE_MMAP |
20 | # undef HAVE_MMAP |
17 | # endif |
21 | # endif |
18 | # endif |
22 | # endif |
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23 | # include <limits.h> |
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24 | # ifndef PAGESIZE |
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25 | # define PAGESIZE pagesize |
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26 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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27 | static long pagesize; |
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28 | # else |
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29 | # define BOOT_PAGESIZE (void)0 |
19 | #endif |
30 | # endif |
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31 | #else |
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32 | # define PAGESIZE 0 |
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33 | # define BOOT_PAGESIZE (void)0 |
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34 | #endif |
20 | |
35 | |
21 | #define MAY_FLUSH /* increases codesize and is rarely used */ |
36 | #if USE_VALGRIND |
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37 | # include <valgrind/valgrind.h> |
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38 | #endif |
22 | |
39 | |
23 | #define SUB_INIT "Coro::State::initialize" |
40 | /* the maximum number of idle cctx that will be pooled */ |
24 | #define UCORO_STATE "_coro_state" |
41 | #define MAX_IDLE_CCTX 8 |
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42 | |
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43 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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44 | (PERL_REVISION > (a) \ |
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45 | || (PERL_REVISION == (a) \ |
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46 | && (PERL_VERSION > (b) \ |
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47 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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48 | |
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49 | #if !PERL_VERSION_ATLEAST (5,6,0) |
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50 | # ifndef PL_ppaddr |
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51 | # define PL_ppaddr ppaddr |
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52 | # endif |
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53 | # ifndef call_sv |
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54 | # define call_sv perl_call_sv |
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55 | # endif |
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56 | # ifndef get_sv |
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57 | # define get_sv perl_get_sv |
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58 | # endif |
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59 | # ifndef get_cv |
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60 | # define get_cv perl_get_cv |
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61 | # endif |
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62 | # ifndef IS_PADGV |
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63 | # define IS_PADGV(v) 0 |
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64 | # endif |
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65 | # ifndef IS_PADCONST |
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66 | # define IS_PADCONST(v) 0 |
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67 | # endif |
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68 | #endif |
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69 | |
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70 | /* 5.8.7 */ |
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71 | #ifndef SvRV_set |
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72 | # define SvRV_set(s,v) SvRV(s) = (v) |
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73 | #endif |
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74 | |
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75 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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76 | # undef STACKGUARD |
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77 | #endif |
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78 | |
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79 | #ifndef STACKGUARD |
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80 | # define STACKGUARD 0 |
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81 | #endif |
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82 | |
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83 | /* prefer perl internal functions over our own? */ |
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84 | #ifndef PREFER_PERL_FUNCTIONS |
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85 | # define PREFER_PERL_FUNCTIONS 0 |
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86 | #endif |
25 | |
87 | |
26 | /* The next macro should declare a variable stacklevel that contains and approximation |
88 | /* The next macro should declare a variable stacklevel that contains and approximation |
27 | * to the current C stack pointer. Its property is that it changes with each call |
89 | * to the current C stack pointer. Its property is that it changes with each call |
28 | * and should be unique. */ |
90 | * and should be unique. */ |
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91 | #define dSTACKLEVEL int stacklevel |
29 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
92 | #define STACKLEVEL ((void *)&stacklevel) |
30 | |
93 | |
31 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
94 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
32 | |
95 | |
33 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
96 | #if __GNUC__ >= 3 |
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97 | # define attribute(x) __attribute__(x) |
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98 | # define BARRIER __asm__ __volatile__ ("" : : : "memory") |
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99 | #else |
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100 | # define attribute(x) |
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101 | # define BARRIER |
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102 | #endif |
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103 | |
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104 | #define NOINLINE attribute ((noinline)) |
34 | |
105 | |
35 | #include "CoroAPI.h" |
106 | #include "CoroAPI.h" |
36 | |
107 | |
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108 | #ifdef USE_ITHREADS |
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109 | static perl_mutex coro_mutex; |
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110 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
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111 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
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112 | #else |
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113 | # define LOCK (void)0 |
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114 | # define UNLOCK (void)0 |
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115 | #endif |
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116 | |
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117 | struct io_state |
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118 | { |
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119 | int errorno; |
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120 | I32 laststype; |
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121 | int laststatval; |
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122 | Stat_t statcache; |
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123 | }; |
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124 | |
37 | static struct CoroAPI coroapi; |
125 | static struct CoroAPI coroapi; |
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126 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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127 | static HV *coro_state_stash, *coro_stash; |
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128 | static SV *coro_mortal; /* will be freed after next transfer */ |
38 | |
129 | |
39 | /* this is actually not only the c stack but also c registers etc... */ |
130 | static struct coro_cctx *cctx_first; |
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131 | static int cctx_count, cctx_idle; |
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132 | |
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133 | /* this is a structure representing a c-level coroutine */ |
40 | typedef struct { |
134 | typedef struct coro_cctx { |
41 | int refcnt; /* pointer reference counter */ |
135 | struct coro_cctx *next; |
42 | int usecnt; /* shared by how many coroutines */ |
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43 | int gencnt; /* generation counter */ |
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44 | |
136 | |
45 | coro_context cctx; |
137 | /* the stack */ |
46 | |
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47 | void *sptr; |
138 | void *sptr; |
48 | long ssize; /* positive == mmap, otherwise malloc */ |
139 | long ssize; /* positive == mmap, otherwise malloc */ |
49 | } coro_stack; |
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50 | |
140 | |
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141 | /* cpu state */ |
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142 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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143 | JMPENV *top_env; |
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144 | coro_context cctx; |
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145 | |
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146 | int inuse; |
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147 | |
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148 | #if USE_VALGRIND |
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149 | int valgrind_id; |
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150 | #endif |
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151 | } coro_cctx; |
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152 | |
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153 | enum { |
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154 | CF_RUNNING = 0x0001, /* coroutine is running */ |
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155 | CF_READY = 0x0002, /* coroutine is ready */ |
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156 | CF_NEW = 0x0004, /* ahs never been switched to */ |
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157 | }; |
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158 | |
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159 | /* this is a structure representing a perl-level coroutine */ |
51 | struct coro { |
160 | struct coro { |
52 | /* the optional C context */ |
161 | /* the c coroutine allocated to this perl coroutine, if any */ |
53 | coro_stack *stack; |
162 | coro_cctx *cctx; |
54 | void *cursp; |
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55 | int gencnt; |
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56 | |
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57 | /* optionally saved, might be zero */ |
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58 | AV *defav; |
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59 | SV *defsv; |
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60 | SV *errsv; |
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61 | |
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62 | /* saved global state not related to stacks */ |
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63 | U8 dowarn; |
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64 | I32 in_eval; |
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65 | |
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66 | /* the stacks and related info (callchain etc..) */ |
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67 | PERL_SI *curstackinfo; |
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68 | AV *curstack; |
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69 | AV *mainstack; |
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70 | SV **stack_sp; |
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71 | OP *op; |
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72 | SV **curpad; |
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73 | SV **stack_base; |
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74 | SV **stack_max; |
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75 | SV **tmps_stack; |
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76 | I32 tmps_floor; |
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77 | I32 tmps_ix; |
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78 | I32 tmps_max; |
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79 | I32 *markstack; |
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80 | I32 *markstack_ptr; |
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81 | I32 *markstack_max; |
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82 | I32 *scopestack; |
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83 | I32 scopestack_ix; |
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84 | I32 scopestack_max; |
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85 | ANY *savestack; |
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86 | I32 savestack_ix; |
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87 | I32 savestack_max; |
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88 | OP **retstack; |
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89 | I32 retstack_ix; |
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90 | I32 retstack_max; |
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91 | COP *curcop; |
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92 | PMOP *curpm; |
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93 | JMPENV *top_env; |
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94 | |
163 | |
95 | /* data associated with this coroutine (initial args) */ |
164 | /* data associated with this coroutine (initial args) */ |
96 | AV *args; |
165 | AV *args; |
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166 | int refcnt; |
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167 | int save; /* CORO_SAVE flags */ |
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168 | int flags; /* CF_ flags */ |
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169 | |
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170 | /* optionally saved, might be zero */ |
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171 | AV *defav; /* @_ */ |
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172 | SV *defsv; /* $_ */ |
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173 | SV *errsv; /* $@ */ |
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174 | SV *irssv; /* $/ */ |
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175 | SV *irssv_sv; /* real $/ cache */ |
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176 | |
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177 | #define VAR(name,type) type name; |
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178 | # include "state.h" |
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179 | #undef VAR |
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180 | |
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181 | /* coro process data */ |
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182 | int prio; |
97 | }; |
183 | }; |
98 | |
184 | |
99 | typedef struct coro *Coro__State; |
185 | typedef struct coro *Coro__State; |
100 | typedef struct coro *Coro__State_or_hashref; |
186 | typedef struct coro *Coro__State_or_hashref; |
101 | |
187 | |
102 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
188 | static AV * |
103 | static HV *coro_state_stash; |
189 | coro_clone_padlist (CV *cv) |
104 | static SV *ucoro_state_sv; |
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105 | static U32 ucoro_state_hash; |
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106 | static HV *padlist_cache; |
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107 | static SV *coro_mortal; /* will be freed after next transfer */ |
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108 | |
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109 | /* mostly copied from op.c:cv_clone2 */ |
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110 | STATIC AV * |
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111 | clone_padlist (AV *protopadlist) |
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112 | { |
190 | { |
113 | AV *av; |
191 | AV *padlist = CvPADLIST (cv); |
114 | I32 ix; |
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115 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
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116 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
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117 | SV **pname = AvARRAY (protopad_name); |
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118 | SV **ppad = AvARRAY (protopad); |
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119 | I32 fname = AvFILLp (protopad_name); |
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120 | I32 fpad = AvFILLp (protopad); |
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121 | AV *newpadlist, *newpad_name, *newpad; |
192 | AV *newpadlist, *newpad; |
122 | SV **npad; |
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123 | |
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124 | newpad_name = newAV (); |
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125 | for (ix = fname; ix >= 0; ix--) |
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126 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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127 | |
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128 | newpad = newAV (); |
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129 | av_fill (newpad, AvFILLp (protopad)); |
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130 | npad = AvARRAY (newpad); |
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131 | |
193 | |
132 | newpadlist = newAV (); |
194 | newpadlist = newAV (); |
133 | AvREAL_off (newpadlist); |
195 | AvREAL_off (newpadlist); |
134 | av_store (newpadlist, 0, (SV *) newpad_name); |
196 | #if PERL_VERSION_ATLEAST (5,9,0) |
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197 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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198 | #else |
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199 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
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200 | #endif |
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201 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
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202 | --AvFILLp (padlist); |
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203 | |
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204 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
135 | av_store (newpadlist, 1, (SV *) newpad); |
205 | av_store (newpadlist, 1, (SV *)newpad); |
136 | |
206 | |
137 | av = newAV (); /* will be @_ */ |
207 | return newpadlist; |
138 | av_extend (av, 0); |
208 | } |
139 | av_store (newpad, 0, (SV *) av); |
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140 | AvFLAGS (av) = AVf_REIFY; |
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141 | |
209 | |
142 | for (ix = fpad; ix > 0; ix--) |
210 | static void |
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211 | free_padlist (AV *padlist) |
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212 | { |
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213 | /* may be during global destruction */ |
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214 | if (SvREFCNT (padlist)) |
143 | { |
215 | { |
144 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
216 | I32 i = AvFILLp (padlist); |
145 | if (namesv && namesv != &PL_sv_undef) |
217 | while (i >= 0) |
146 | { |
218 | { |
147 | char *name = SvPVX (namesv); /* XXX */ |
219 | SV **svp = av_fetch (padlist, i--, FALSE); |
148 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
220 | if (svp) |
149 | { /* lexical from outside? */ |
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150 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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151 | } |
221 | { |
152 | else |
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153 | { /* our own lexical */ |
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154 | SV *sv; |
222 | SV *sv; |
155 | if (*name == '&') |
223 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
156 | sv = SvREFCNT_inc (ppad[ix]); |
224 | SvREFCNT_dec (sv); |
157 | else if (*name == '@') |
225 | |
158 | sv = (SV *) newAV (); |
226 | SvREFCNT_dec (*svp); |
159 | else if (*name == '%') |
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160 | sv = (SV *) newHV (); |
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161 | else |
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162 | sv = NEWSV (0, 0); |
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163 | if (!SvPADBUSY (sv)) |
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164 | SvPADMY_on (sv); |
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165 | npad[ix] = sv; |
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166 | } |
227 | } |
167 | } |
228 | } |
168 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
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169 | { |
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170 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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171 | } |
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172 | else |
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173 | { |
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174 | SV *sv = NEWSV (0, 0); |
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175 | SvPADTMP_on (sv); |
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176 | npad[ix] = sv; |
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177 | } |
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178 | } |
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179 | |
229 | |
180 | #if 0 /* return -ENOTUNDERSTOOD */ |
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181 | /* Now that vars are all in place, clone nested closures. */ |
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182 | |
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183 | for (ix = fpad; ix > 0; ix--) { |
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184 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
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185 | if (namesv |
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186 | && namesv != &PL_sv_undef |
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187 | && !(SvFLAGS(namesv) & SVf_FAKE) |
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188 | && *SvPVX(namesv) == '&' |
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189 | && CvCLONE(ppad[ix])) |
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190 | { |
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191 | CV *kid = cv_clone((CV*)ppad[ix]); |
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192 | SvREFCNT_dec(ppad[ix]); |
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193 | CvCLONE_on(kid); |
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194 | SvPADMY_on(kid); |
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195 | npad[ix] = (SV*)kid; |
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196 | } |
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197 | } |
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198 | #endif |
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199 | |
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200 | return newpadlist; |
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201 | } |
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202 | |
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203 | #ifdef MAY_FLUSH |
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204 | STATIC void |
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205 | free_padlist (AV *padlist) |
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206 | { |
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207 | /* may be during global destruction */ |
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208 | if (SvREFCNT(padlist)) |
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209 | { |
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210 | I32 i = AvFILLp(padlist); |
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211 | while (i >= 0) |
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212 | { |
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213 | SV **svp = av_fetch(padlist, i--, FALSE); |
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214 | SV *sv = svp ? *svp : Nullsv; |
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215 | if (sv) |
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216 | SvREFCNT_dec(sv); |
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217 | } |
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218 | |
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219 | SvREFCNT_dec((SV*)padlist); |
230 | SvREFCNT_dec ((SV*)padlist); |
220 | } |
231 | } |
221 | } |
232 | } |
222 | #endif |
233 | |
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234 | static int |
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235 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
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236 | { |
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237 | AV *padlist; |
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238 | AV *av = (AV *)mg->mg_obj; |
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239 | |
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240 | /* casting is fun. */ |
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241 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
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242 | free_padlist (padlist); |
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243 | |
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244 | SvREFCNT_dec (av); |
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245 | |
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246 | return 0; |
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247 | } |
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248 | |
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249 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
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250 | |
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251 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
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252 | |
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253 | #define CORO_MAGIC(cv) \ |
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254 | SvMAGIC (cv) \ |
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255 | ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
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256 | ? SvMAGIC (cv) \ |
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257 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
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258 | : 0 |
223 | |
259 | |
224 | /* the next two functions merely cache the padlists */ |
260 | /* the next two functions merely cache the padlists */ |
225 | STATIC void |
261 | static void |
226 | get_padlist (CV *cv) |
262 | get_padlist (CV *cv) |
227 | { |
263 | { |
228 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
264 | MAGIC *mg = CORO_MAGIC (cv); |
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265 | AV *av; |
229 | |
266 | |
230 | if (he && AvFILLp ((AV *)*he) >= 0) |
267 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
231 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
268 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
232 | else |
269 | else |
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270 | { |
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271 | #if PREFER_PERL_FUNCTIONS |
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272 | /* this is probably cleaner, but also slower? */ |
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273 | CV *cp = Perl_cv_clone (cv); |
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274 | CvPADLIST (cv) = CvPADLIST (cp); |
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275 | CvPADLIST (cp) = 0; |
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276 | SvREFCNT_dec (cp); |
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277 | #else |
233 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
278 | CvPADLIST (cv) = coro_clone_padlist (cv); |
|
|
279 | #endif |
|
|
280 | } |
234 | } |
281 | } |
235 | |
282 | |
236 | STATIC void |
283 | static void |
237 | put_padlist (CV *cv) |
284 | put_padlist (CV *cv) |
238 | { |
285 | { |
239 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
286 | MAGIC *mg = CORO_MAGIC (cv); |
|
|
287 | AV *av; |
240 | |
288 | |
241 | if (SvTYPE (*he) != SVt_PVAV) |
289 | if (!mg) |
242 | { |
|
|
243 | SvREFCNT_dec (*he); |
|
|
244 | *he = (SV *)newAV (); |
|
|
245 | } |
290 | { |
246 | |
291 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
247 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
292 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
248 | } |
293 | mg->mg_virtual = &vtbl_coro; |
249 | |
294 | mg->mg_obj = (SV *)newAV (); |
250 | #ifdef MAY_FLUSH |
|
|
251 | STATIC void |
|
|
252 | flush_padlist_cache () |
|
|
253 | { |
|
|
254 | HV *hv = padlist_cache; |
|
|
255 | padlist_cache = newHV (); |
|
|
256 | |
|
|
257 | if (hv_iterinit (hv)) |
|
|
258 | { |
295 | } |
259 | HE *he; |
|
|
260 | AV *padlist; |
|
|
261 | |
296 | |
262 | while (!!(he = hv_iternext (hv))) |
297 | av = (AV *)mg->mg_obj; |
263 | { |
|
|
264 | AV *av = (AV *)HeVAL(he); |
|
|
265 | |
298 | |
266 | /* casting is fun. */ |
299 | if (AvFILLp (av) >= AvMAX (av)) |
267 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
300 | av_extend (av, AvMAX (av) + 1); |
268 | free_padlist (padlist); |
|
|
269 | } |
|
|
270 | } |
|
|
271 | |
301 | |
272 | SvREFCNT_dec (hv); |
302 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
273 | } |
303 | } |
274 | #endif |
|
|
275 | |
304 | |
276 | #define SB do { |
305 | #define SB do { |
277 | #define SE } while (0) |
306 | #define SE } while (0) |
278 | |
307 | |
279 | #define LOAD(state) load_state(aTHX_ (state)); |
|
|
280 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
|
|
281 | |
|
|
282 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
308 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
283 | |
309 | |
284 | static void |
310 | static void |
285 | load_state(pTHX_ Coro__State c) |
311 | load_perl (Coro__State c) |
286 | { |
312 | { |
287 | PL_dowarn = c->dowarn; |
313 | #define VAR(name,type) PL_ ## name = c->name; |
288 | PL_in_eval = c->in_eval; |
314 | # include "state.h" |
289 | |
315 | #undef VAR |
290 | PL_curstackinfo = c->curstackinfo; |
|
|
291 | PL_curstack = c->curstack; |
|
|
292 | PL_mainstack = c->mainstack; |
|
|
293 | PL_stack_sp = c->stack_sp; |
|
|
294 | PL_op = c->op; |
|
|
295 | PL_curpad = c->curpad; |
|
|
296 | PL_stack_base = c->stack_base; |
|
|
297 | PL_stack_max = c->stack_max; |
|
|
298 | PL_tmps_stack = c->tmps_stack; |
|
|
299 | PL_tmps_floor = c->tmps_floor; |
|
|
300 | PL_tmps_ix = c->tmps_ix; |
|
|
301 | PL_tmps_max = c->tmps_max; |
|
|
302 | PL_markstack = c->markstack; |
|
|
303 | PL_markstack_ptr = c->markstack_ptr; |
|
|
304 | PL_markstack_max = c->markstack_max; |
|
|
305 | PL_scopestack = c->scopestack; |
|
|
306 | PL_scopestack_ix = c->scopestack_ix; |
|
|
307 | PL_scopestack_max = c->scopestack_max; |
|
|
308 | PL_savestack = c->savestack; |
|
|
309 | PL_savestack_ix = c->savestack_ix; |
|
|
310 | PL_savestack_max = c->savestack_max; |
|
|
311 | PL_retstack = c->retstack; |
|
|
312 | PL_retstack_ix = c->retstack_ix; |
|
|
313 | PL_retstack_max = c->retstack_max; |
|
|
314 | PL_curcop = c->curcop; |
|
|
315 | PL_top_env = c->top_env; |
|
|
316 | |
316 | |
317 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
317 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
318 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
318 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
319 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
319 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
|
|
320 | if (c->irssv) |
|
|
321 | { |
|
|
322 | if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv)) |
|
|
323 | SvREFCNT_dec (c->irssv); |
|
|
324 | else |
|
|
325 | { |
|
|
326 | REPLACE_SV (PL_rs, c->irssv); |
|
|
327 | if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0); |
|
|
328 | sv_setsv (c->irssv_sv, PL_rs); |
|
|
329 | } |
|
|
330 | } |
320 | |
331 | |
321 | { |
332 | { |
322 | dSP; |
333 | dSP; |
323 | CV *cv; |
334 | CV *cv; |
324 | |
335 | |
325 | /* now do the ugly restore mess */ |
336 | /* now do the ugly restore mess */ |
326 | while ((cv = (CV *)POPs)) |
337 | while ((cv = (CV *)POPs)) |
327 | { |
338 | { |
328 | AV *padlist = (AV *)POPs; |
|
|
329 | |
|
|
330 | if (padlist) |
|
|
331 | { |
|
|
332 | put_padlist (cv); /* mark this padlist as available */ |
339 | put_padlist (cv); /* mark this padlist as available */ |
333 | CvPADLIST(cv) = padlist; |
340 | CvDEPTH (cv) = PTR2IV (POPs); |
334 | #ifdef USE_THREADS |
341 | CvPADLIST (cv) = (AV *)POPs; |
335 | /*CvOWNER(cv) = (struct perl_thread *)POPs;*/ |
|
|
336 | #endif |
|
|
337 | } |
|
|
338 | |
|
|
339 | ++CvDEPTH(cv); |
|
|
340 | } |
342 | } |
341 | |
343 | |
342 | PUTBACK; |
344 | PUTBACK; |
343 | } |
345 | } |
344 | } |
346 | } |
345 | |
347 | |
346 | static void |
348 | static void |
347 | save_state(pTHX_ Coro__State c, int flags) |
349 | save_perl (Coro__State c) |
348 | { |
350 | { |
349 | { |
351 | { |
350 | dSP; |
352 | dSP; |
351 | I32 cxix = cxstack_ix; |
353 | I32 cxix = cxstack_ix; |
352 | PERL_CONTEXT *ccstk = cxstack; |
354 | PERL_CONTEXT *ccstk = cxstack; |
… | |
… | |
355 | /* |
357 | /* |
356 | * the worst thing you can imagine happens first - we have to save |
358 | * the worst thing you can imagine happens first - we have to save |
357 | * (and reinitialize) all cv's in the whole callchain :( |
359 | * (and reinitialize) all cv's in the whole callchain :( |
358 | */ |
360 | */ |
359 | |
361 | |
|
|
362 | EXTEND (SP, 3 + 1); |
360 | PUSHs (Nullsv); |
363 | PUSHs (Nullsv); |
361 | /* this loop was inspired by pp_caller */ |
364 | /* this loop was inspired by pp_caller */ |
362 | for (;;) |
365 | for (;;) |
363 | { |
366 | { |
364 | while (cxix >= 0) |
367 | while (cxix >= 0) |
365 | { |
368 | { |
366 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
369 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
367 | |
370 | |
368 | if (CxTYPE(cx) == CXt_SUB) |
371 | if (CxTYPE (cx) == CXt_SUB) |
369 | { |
372 | { |
370 | CV *cv = cx->blk_sub.cv; |
373 | CV *cv = cx->blk_sub.cv; |
|
|
374 | |
371 | if (CvDEPTH(cv)) |
375 | if (CvDEPTH (cv)) |
372 | { |
376 | { |
373 | #ifdef USE_THREADS |
|
|
374 | /*XPUSHs ((SV *)CvOWNER(cv));*/ |
|
|
375 | /*CvOWNER(cv) = 0;*/ |
|
|
376 | /*error must unlock this cv etc.. etc...*/ |
|
|
377 | #endif |
|
|
378 | EXTEND (SP, CvDEPTH(cv)*2); |
377 | EXTEND (SP, 3); |
379 | |
|
|
380 | while (--CvDEPTH(cv)) |
|
|
381 | { |
|
|
382 | /* this tells the restore code to increment CvDEPTH */ |
|
|
383 | PUSHs (Nullsv); |
|
|
384 | PUSHs ((SV *)cv); |
|
|
385 | } |
|
|
386 | |
|
|
387 | PUSHs ((SV *)CvPADLIST(cv)); |
378 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
379 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
388 | PUSHs ((SV *)cv); |
380 | PUSHs ((SV *)cv); |
389 | |
381 | |
|
|
382 | CvDEPTH (cv) = 0; |
390 | get_padlist (cv); /* this is a monster */ |
383 | get_padlist (cv); |
391 | } |
384 | } |
392 | } |
|
|
393 | else if (CxTYPE(cx) == CXt_FORMAT) |
|
|
394 | { |
|
|
395 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
396 | /* my bold guess is as a simple, plain sub... */ |
|
|
397 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
398 | } |
385 | } |
399 | } |
386 | } |
400 | |
387 | |
401 | if (top_si->si_type == PERLSI_MAIN) |
388 | if (top_si->si_type == PERLSI_MAIN) |
402 | break; |
389 | break; |
… | |
… | |
407 | } |
394 | } |
408 | |
395 | |
409 | PUTBACK; |
396 | PUTBACK; |
410 | } |
397 | } |
411 | |
398 | |
412 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
399 | c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
413 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
400 | c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
414 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
401 | c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
|
|
402 | c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; |
415 | |
403 | |
416 | c->dowarn = PL_dowarn; |
404 | #define VAR(name,type)c->name = PL_ ## name; |
417 | c->in_eval = PL_in_eval; |
405 | # include "state.h" |
418 | |
406 | #undef VAR |
419 | c->curstackinfo = PL_curstackinfo; |
|
|
420 | c->curstack = PL_curstack; |
|
|
421 | c->mainstack = PL_mainstack; |
|
|
422 | c->stack_sp = PL_stack_sp; |
|
|
423 | c->op = PL_op; |
|
|
424 | c->curpad = PL_curpad; |
|
|
425 | c->stack_base = PL_stack_base; |
|
|
426 | c->stack_max = PL_stack_max; |
|
|
427 | c->tmps_stack = PL_tmps_stack; |
|
|
428 | c->tmps_floor = PL_tmps_floor; |
|
|
429 | c->tmps_ix = PL_tmps_ix; |
|
|
430 | c->tmps_max = PL_tmps_max; |
|
|
431 | c->markstack = PL_markstack; |
|
|
432 | c->markstack_ptr = PL_markstack_ptr; |
|
|
433 | c->markstack_max = PL_markstack_max; |
|
|
434 | c->scopestack = PL_scopestack; |
|
|
435 | c->scopestack_ix = PL_scopestack_ix; |
|
|
436 | c->scopestack_max = PL_scopestack_max; |
|
|
437 | c->savestack = PL_savestack; |
|
|
438 | c->savestack_ix = PL_savestack_ix; |
|
|
439 | c->savestack_max = PL_savestack_max; |
|
|
440 | c->retstack = PL_retstack; |
|
|
441 | c->retstack_ix = PL_retstack_ix; |
|
|
442 | c->retstack_max = PL_retstack_max; |
|
|
443 | c->curcop = PL_curcop; |
|
|
444 | c->top_env = PL_top_env; |
|
|
445 | } |
407 | } |
446 | |
408 | |
447 | /* |
409 | /* |
448 | * allocate various perl stacks. This is an exact copy |
410 | * allocate various perl stacks. This is an exact copy |
449 | * of perl.c:init_stacks, except that it uses less memory |
411 | * of perl.c:init_stacks, except that it uses less memory |
450 | * on the assumption that coroutines do not usually need |
412 | * on the (sometimes correct) assumption that coroutines do |
451 | * a lot of stackspace. |
413 | * not usually need a lot of stackspace. |
452 | */ |
414 | */ |
453 | STATIC void |
415 | #if PREFER_PERL_FUNCTIONS |
|
|
416 | # define coro_init_stacks init_stacks |
|
|
417 | #else |
|
|
418 | static void |
454 | coro_init_stacks (pTHX) |
419 | coro_init_stacks () |
455 | { |
420 | { |
456 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
421 | PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
457 | PL_curstackinfo->si_type = PERLSI_MAIN; |
422 | PL_curstackinfo->si_type = PERLSI_MAIN; |
458 | PL_curstack = PL_curstackinfo->si_stack; |
423 | PL_curstack = PL_curstackinfo->si_stack; |
459 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
424 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
460 | |
425 | |
461 | PL_stack_base = AvARRAY(PL_curstack); |
426 | PL_stack_base = AvARRAY(PL_curstack); |
462 | PL_stack_sp = PL_stack_base; |
427 | PL_stack_sp = PL_stack_base; |
463 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
428 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
464 | |
429 | |
465 | New(50,PL_tmps_stack,96,SV*); |
430 | New(50,PL_tmps_stack,128,SV*); |
466 | PL_tmps_floor = -1; |
431 | PL_tmps_floor = -1; |
467 | PL_tmps_ix = -1; |
432 | PL_tmps_ix = -1; |
468 | PL_tmps_max = 96; |
433 | PL_tmps_max = 128; |
469 | |
434 | |
470 | New(54,PL_markstack,16,I32); |
435 | New(54,PL_markstack,32,I32); |
471 | PL_markstack_ptr = PL_markstack; |
436 | PL_markstack_ptr = PL_markstack; |
472 | PL_markstack_max = PL_markstack + 16; |
437 | PL_markstack_max = PL_markstack + 32; |
473 | |
438 | |
|
|
439 | #ifdef SET_MARK_OFFSET |
474 | SET_MARK_OFFSET; |
440 | SET_MARK_OFFSET; |
|
|
441 | #endif |
475 | |
442 | |
476 | New(54,PL_scopestack,16,I32); |
443 | New(54,PL_scopestack,32,I32); |
477 | PL_scopestack_ix = 0; |
444 | PL_scopestack_ix = 0; |
478 | PL_scopestack_max = 16; |
445 | PL_scopestack_max = 32; |
479 | |
446 | |
480 | New(54,PL_savestack,96,ANY); |
447 | New(54,PL_savestack,64,ANY); |
481 | PL_savestack_ix = 0; |
448 | PL_savestack_ix = 0; |
482 | PL_savestack_max = 96; |
449 | PL_savestack_max = 64; |
483 | |
450 | |
|
|
451 | #if !PERL_VERSION_ATLEAST (5,9,0) |
484 | New(54,PL_retstack,8,OP*); |
452 | New(54,PL_retstack,16,OP*); |
485 | PL_retstack_ix = 0; |
453 | PL_retstack_ix = 0; |
486 | PL_retstack_max = 8; |
454 | PL_retstack_max = 16; |
|
|
455 | #endif |
487 | } |
456 | } |
|
|
457 | #endif |
488 | |
458 | |
489 | /* |
459 | /* |
490 | * destroy the stacks, the callchain etc... |
460 | * destroy the stacks, the callchain etc... |
491 | * still there is a memleak of 128 bytes... |
|
|
492 | */ |
461 | */ |
493 | STATIC void |
462 | static void |
494 | destroy_stacks(pTHX) |
463 | coro_destroy_stacks () |
495 | { |
464 | { |
496 | if (!IN_DESTRUCT) |
465 | if (!IN_DESTRUCT) |
497 | { |
466 | { |
498 | /* is this ugly, I ask? */ |
467 | /* restore all saved variables and stuff */ |
499 | while (PL_scopestack_ix) |
468 | LEAVE_SCOPE (0); |
500 | LEAVE; |
469 | assert (PL_tmps_floor == -1); |
501 | |
470 | |
502 | /* sure it is, but more important: is it correct?? :/ */ |
471 | /* free all temporaries */ |
503 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
|
|
504 | FREETMPS; |
472 | FREETMPS; |
|
|
473 | assert (PL_tmps_ix == -1); |
|
|
474 | |
|
|
475 | POPSTACK_TO (PL_mainstack); |
505 | } |
476 | } |
506 | |
477 | |
507 | while (PL_curstackinfo->si_next) |
478 | while (PL_curstackinfo->si_next) |
508 | PL_curstackinfo = PL_curstackinfo->si_next; |
479 | PL_curstackinfo = PL_curstackinfo->si_next; |
509 | |
480 | |
510 | while (PL_curstackinfo) |
481 | while (PL_curstackinfo) |
511 | { |
482 | { |
512 | PERL_SI *p = PL_curstackinfo->si_prev; |
483 | PERL_SI *p = PL_curstackinfo->si_prev; |
513 | |
484 | |
514 | { |
|
|
515 | dSP; |
|
|
516 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
517 | PUTBACK; /* possibly superfluous */ |
|
|
518 | } |
|
|
519 | |
|
|
520 | if (!IN_DESTRUCT) |
485 | if (!IN_DESTRUCT) |
521 | { |
|
|
522 | dounwind(-1); |
|
|
523 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
486 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
524 | } |
|
|
525 | |
487 | |
526 | Safefree(PL_curstackinfo->si_cxstack); |
488 | Safefree (PL_curstackinfo->si_cxstack); |
527 | Safefree(PL_curstackinfo); |
489 | Safefree (PL_curstackinfo); |
528 | PL_curstackinfo = p; |
490 | PL_curstackinfo = p; |
529 | } |
491 | } |
530 | |
492 | |
531 | Safefree(PL_tmps_stack); |
493 | Safefree (PL_tmps_stack); |
532 | Safefree(PL_markstack); |
494 | Safefree (PL_markstack); |
533 | Safefree(PL_scopestack); |
495 | Safefree (PL_scopestack); |
534 | Safefree(PL_savestack); |
496 | Safefree (PL_savestack); |
|
|
497 | #if !PERL_VERSION_ATLEAST (5,9,0) |
535 | Safefree(PL_retstack); |
498 | Safefree (PL_retstack); |
536 | } |
|
|
537 | |
|
|
538 | static void |
|
|
539 | allocate_stack (Coro__State ctx, int alloc) |
|
|
540 | { |
|
|
541 | coro_stack *stack; |
|
|
542 | |
|
|
543 | New (0, stack, 1, coro_stack); |
|
|
544 | |
|
|
545 | stack->refcnt = 1; |
|
|
546 | stack->usecnt = 1; |
|
|
547 | stack->gencnt = ctx->gencnt = 0; |
|
|
548 | if (alloc) |
|
|
549 | { |
|
|
550 | #if HAVE_MMAP |
|
|
551 | stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
552 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
553 | if (stack->sptr == (void *)-1) |
|
|
554 | #endif |
499 | #endif |
555 | { |
|
|
556 | /*FIXME*//*D*//* reasonable stack size! */ |
|
|
557 | stack->ssize = -4096 * sizeof (long); |
|
|
558 | New (0, stack->sptr, 4096, long); |
|
|
559 | } |
|
|
560 | } |
|
|
561 | else |
|
|
562 | stack->sptr = 0; |
|
|
563 | |
|
|
564 | ctx->stack = stack; |
|
|
565 | } |
500 | } |
566 | |
501 | |
567 | static void |
502 | static void |
568 | deallocate_stack (Coro__State ctx) |
503 | setup_coro (struct coro *coro) |
569 | { |
|
|
570 | coro_stack *stack = ctx->stack; |
|
|
571 | |
|
|
572 | ctx->stack = 0; |
|
|
573 | |
|
|
574 | if (stack) |
|
|
575 | { |
|
|
576 | if (!--stack->refcnt) |
|
|
577 | { |
|
|
578 | #ifdef HAVE_MMAP |
|
|
579 | if (stack->ssize > 0 && stack->sptr) |
|
|
580 | munmap (stack->sptr, stack->ssize); |
|
|
581 | else |
|
|
582 | #else |
|
|
583 | Safefree (stack->sptr); |
|
|
584 | #endif |
|
|
585 | Safefree (stack); |
|
|
586 | } |
|
|
587 | else if (ctx->gencnt == stack->gencnt) |
|
|
588 | --stack->usecnt; |
|
|
589 | } |
|
|
590 | } |
|
|
591 | |
|
|
592 | static void |
|
|
593 | setup_coro (void *arg) |
|
|
594 | { |
504 | { |
595 | /* |
505 | /* |
596 | * emulate part of the perl startup here. |
506 | * emulate part of the perl startup here. |
597 | */ |
507 | */ |
|
|
508 | |
|
|
509 | coro_init_stacks (); |
|
|
510 | |
|
|
511 | PL_curcop = &PL_compiling; |
|
|
512 | PL_in_eval = EVAL_NULL; |
|
|
513 | PL_curpm = 0; |
|
|
514 | PL_localizing = 0; |
|
|
515 | PL_dirty = 0; |
|
|
516 | PL_restartop = 0; |
|
|
517 | |
|
|
518 | { |
|
|
519 | dSP; |
|
|
520 | LOGOP myop; |
|
|
521 | |
|
|
522 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
523 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
524 | |
|
|
525 | Zero (&myop, 1, LOGOP); |
|
|
526 | myop.op_next = Nullop; |
|
|
527 | myop.op_flags = OPf_WANT_VOID; |
|
|
528 | |
|
|
529 | PUSHMARK (SP); |
|
|
530 | XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
|
|
531 | PUTBACK; |
|
|
532 | PL_op = (OP *)&myop; |
|
|
533 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
534 | SPAGAIN; |
|
|
535 | } |
|
|
536 | |
|
|
537 | ENTER; /* necessary e.g. for dounwind */ |
|
|
538 | } |
|
|
539 | |
|
|
540 | static void |
|
|
541 | free_coro_mortal () |
|
|
542 | { |
|
|
543 | if (coro_mortal) |
|
|
544 | { |
|
|
545 | SvREFCNT_dec (coro_mortal); |
|
|
546 | coro_mortal = 0; |
|
|
547 | } |
|
|
548 | } |
|
|
549 | |
|
|
550 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
|
|
551 | static void NOINLINE |
|
|
552 | prepare_cctx (coro_cctx *cctx) |
|
|
553 | { |
598 | dSP; |
554 | dSP; |
599 | Coro__State ctx = (Coro__State)arg; |
555 | LOGOP myop; |
600 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
|
|
601 | |
556 | |
602 | coro_init_stacks (aTHX); |
557 | Zero (&myop, 1, LOGOP); |
603 | PL_curpm = 0; /* segfault on first access */ |
558 | myop.op_next = PL_op; |
604 | /*PL_curcop = 0;*/ |
559 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
605 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
|
|
606 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
607 | GvAV (PL_defgv) = ctx->args; |
|
|
608 | |
560 | |
|
|
561 | PUSHMARK (SP); |
|
|
562 | EXTEND (SP, 2); |
|
|
563 | PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
|
|
564 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
|
|
565 | PUTBACK; |
|
|
566 | PL_op = (OP *)&myop; |
|
|
567 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
609 | SPAGAIN; |
568 | SPAGAIN; |
610 | |
|
|
611 | if (ctx->stack) |
|
|
612 | { |
|
|
613 | ctx->cursp = 0; |
|
|
614 | |
|
|
615 | PUSHMARK(SP); |
|
|
616 | PUTBACK; |
|
|
617 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
618 | |
|
|
619 | if (SvTRUE (ERRSV)) |
|
|
620 | croak (NULL); |
|
|
621 | else |
|
|
622 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
623 | } |
|
|
624 | else |
|
|
625 | { |
|
|
626 | UNOP myop; |
|
|
627 | |
|
|
628 | PL_op = (OP *)&myop; |
|
|
629 | |
|
|
630 | Zero(&myop, 1, UNOP); |
|
|
631 | myop.op_next = Nullop; |
|
|
632 | myop.op_flags = OPf_WANT_VOID; |
|
|
633 | |
|
|
634 | PUSHMARK(SP); |
|
|
635 | XPUSHs (sub_init); |
|
|
636 | /* |
|
|
637 | * the next line is slightly wrong, as PL_op->op_next |
|
|
638 | * is actually being executed so we skip the first op. |
|
|
639 | * that doesn't matter, though, since it is only |
|
|
640 | * pp_nextstate and we never return... |
|
|
641 | * ah yes, and I don't care anyways ;) |
|
|
642 | */ |
|
|
643 | PUTBACK; |
|
|
644 | PL_op = pp_entersub(); |
|
|
645 | SPAGAIN; |
|
|
646 | |
|
|
647 | ENTER; /* necessary e.g. for dounwind */ |
|
|
648 | } |
|
|
649 | } |
569 | } |
650 | |
570 | |
651 | static void |
571 | static void |
652 | continue_coro (void *arg) |
572 | coro_run (void *arg) |
653 | { |
573 | { |
|
|
574 | /* coro_run is the alternative tail of transfer(), so unlock here. */ |
|
|
575 | UNLOCK; |
|
|
576 | |
654 | /* |
577 | /* |
655 | * this is a _very_ stripped down perl interpreter ;) |
578 | * this is a _very_ stripped down perl interpreter ;) |
656 | */ |
579 | */ |
657 | Coro__State ctx = (Coro__State)arg; |
|
|
658 | JMPENV coro_start_env; |
|
|
659 | |
|
|
660 | /* same as JMPENV_BOOTSTRAP */ |
|
|
661 | Zero(&coro_start_env, 1, JMPENV); |
|
|
662 | coro_start_env.je_ret = -1; |
|
|
663 | coro_start_env.je_mustcatch = TRUE; |
|
|
664 | PL_top_env = &coro_start_env; |
580 | PL_top_env = &PL_start_env; |
665 | |
581 | |
666 | ctx->cursp = 0; |
582 | /* inject call to cctx_init */ |
667 | PL_op = PL_op->op_next; |
583 | prepare_cctx ((coro_cctx *)arg); |
668 | CALLRUNOPS(aTHX); |
|
|
669 | |
584 | |
|
|
585 | /* somebody will hit me for both perl_run and PL_restartop */ |
|
|
586 | PL_restartop = PL_op; |
|
|
587 | perl_run (PL_curinterp); |
|
|
588 | |
|
|
589 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
670 | abort (); |
590 | abort (); |
671 | } |
591 | } |
672 | |
592 | |
673 | STATIC void |
593 | static coro_cctx * |
|
|
594 | cctx_new () |
|
|
595 | { |
|
|
596 | coro_cctx *cctx; |
|
|
597 | |
|
|
598 | ++cctx_count; |
|
|
599 | |
|
|
600 | Newz (0, cctx, 1, coro_cctx); |
|
|
601 | |
|
|
602 | #if HAVE_MMAP |
|
|
603 | |
|
|
604 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
|
|
605 | /* mmap supposedly does allocate-on-write for us */ |
|
|
606 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
607 | |
|
|
608 | if (cctx->sptr == (void *)-1) |
|
|
609 | { |
|
|
610 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
611 | _exit (EXIT_FAILURE); |
|
|
612 | } |
|
|
613 | |
|
|
614 | # if STACKGUARD |
|
|
615 | mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
616 | # endif |
|
|
617 | |
|
|
618 | #else |
|
|
619 | |
|
|
620 | cctx->ssize = STACKSIZE * (long)sizeof (long); |
|
|
621 | New (0, cctx->sptr, STACKSIZE, long); |
|
|
622 | |
|
|
623 | if (!cctx->sptr) |
|
|
624 | { |
|
|
625 | perror ("FATAL: unable to malloc stack for coroutine"); |
|
|
626 | _exit (EXIT_FAILURE); |
|
|
627 | } |
|
|
628 | |
|
|
629 | #endif |
|
|
630 | |
|
|
631 | #if USE_VALGRIND |
|
|
632 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ( |
|
|
633 | STACKGUARD * PAGESIZE + (char *)cctx->sptr, |
|
|
634 | cctx->ssize + (char *)cctx->sptr |
|
|
635 | ); |
|
|
636 | #endif |
|
|
637 | |
|
|
638 | coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize); |
|
|
639 | |
|
|
640 | return cctx; |
|
|
641 | } |
|
|
642 | |
|
|
643 | static void |
|
|
644 | cctx_destroy (coro_cctx *cctx) |
|
|
645 | { |
|
|
646 | if (!cctx) |
|
|
647 | return; |
|
|
648 | |
|
|
649 | --cctx_count; |
|
|
650 | |
|
|
651 | #if USE_VALGRIND |
|
|
652 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
653 | #endif |
|
|
654 | |
|
|
655 | #if HAVE_MMAP |
|
|
656 | munmap (cctx->sptr, cctx->ssize); |
|
|
657 | #else |
|
|
658 | Safefree (cctx->sptr); |
|
|
659 | #endif |
|
|
660 | |
|
|
661 | Safefree (cctx); |
|
|
662 | } |
|
|
663 | |
|
|
664 | static coro_cctx * |
|
|
665 | cctx_get () |
|
|
666 | { |
|
|
667 | coro_cctx *cctx; |
|
|
668 | |
|
|
669 | if (cctx_first) |
|
|
670 | { |
|
|
671 | cctx = cctx_first; |
|
|
672 | cctx_first = cctx->next; |
|
|
673 | --cctx_idle; |
|
|
674 | } |
|
|
675 | else |
|
|
676 | { |
|
|
677 | cctx = cctx_new (); |
|
|
678 | PL_op = PL_op->op_next; |
|
|
679 | } |
|
|
680 | |
|
|
681 | return cctx; |
|
|
682 | } |
|
|
683 | |
|
|
684 | static void |
|
|
685 | cctx_put (coro_cctx *cctx) |
|
|
686 | { |
|
|
687 | /* free another cctx if overlimit */ |
|
|
688 | if (cctx_idle >= MAX_IDLE_CCTX) |
|
|
689 | { |
|
|
690 | coro_cctx *first = cctx_first; |
|
|
691 | cctx_first = first->next; |
|
|
692 | --cctx_idle; |
|
|
693 | |
|
|
694 | assert (!first->inuse); |
|
|
695 | cctx_destroy (first); |
|
|
696 | } |
|
|
697 | |
|
|
698 | ++cctx_idle; |
|
|
699 | cctx->next = cctx_first; |
|
|
700 | cctx_first = cctx; |
|
|
701 | } |
|
|
702 | |
|
|
703 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
704 | static void NOINLINE |
674 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
705 | transfer (struct coro *prev, struct coro *next) |
675 | { |
706 | { |
676 | dSTACKLEVEL; |
707 | dSTACKLEVEL; |
677 | static struct coro *xnext; |
|
|
678 | |
708 | |
|
|
709 | /* sometimes transfer is only called to set idle_sp */ |
|
|
710 | if (!next) |
|
|
711 | { |
|
|
712 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
|
|
713 | assert (((coro_cctx *)prev)->top_env = PL_top_env); /* just for the side effetc when assert is enabled */ |
|
|
714 | } |
679 | if (prev != next) |
715 | else if (prev != next) |
680 | { |
716 | { |
681 | xnext = next; |
717 | coro_cctx *prev__cctx; |
682 | |
718 | |
683 | if (next->mainstack) |
719 | if (prev->flags & CF_NEW) |
684 | { |
720 | { |
685 | SAVE (prev, flags); |
721 | /* create a new empty context */ |
686 | LOAD (next); |
722 | Newz (0, prev->cctx, 1, coro_cctx); |
687 | |
723 | prev->cctx->inuse = 1; |
688 | /* mark this state as in-use */ |
724 | prev->flags &= ~CF_NEW; |
689 | next->mainstack = 0; |
725 | prev->flags |= CF_RUNNING; |
690 | next->tmps_ix = -2; |
|
|
691 | |
|
|
692 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
693 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
694 | { |
|
|
695 | if (!prev->stack) |
|
|
696 | allocate_stack (prev, 0); |
|
|
697 | else if (prev->cursp != stacklevel |
|
|
698 | && prev->stack->usecnt > 1) |
|
|
699 | { |
|
|
700 | prev->gencnt = ++prev->stack->gencnt; |
|
|
701 | prev->stack->usecnt = 1; |
|
|
702 | } |
|
|
703 | |
|
|
704 | /* has our stack been invalidated? */ |
|
|
705 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
706 | { |
|
|
707 | deallocate_stack (next); |
|
|
708 | allocate_stack (next, 1); |
|
|
709 | coro_create (&(next->stack->cctx), |
|
|
710 | continue_coro, (void *)next, |
|
|
711 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
712 | } |
|
|
713 | |
|
|
714 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
715 | /* don't add any code here */ |
|
|
716 | } |
|
|
717 | |
|
|
718 | } |
726 | } |
719 | else if (next->tmps_ix == -2) |
727 | |
720 | croak ("tried to transfer to running coroutine"); |
728 | /*TODO: must not croak here */ |
|
|
729 | if (!prev->flags & CF_RUNNING) |
|
|
730 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
|
|
731 | |
|
|
732 | if (next->flags & CF_RUNNING) |
|
|
733 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
|
|
734 | |
|
|
735 | prev->flags &= ~CF_RUNNING; |
|
|
736 | next->flags |= CF_RUNNING; |
|
|
737 | |
|
|
738 | LOCK; |
|
|
739 | |
|
|
740 | if (next->flags & CF_NEW) |
|
|
741 | { |
|
|
742 | /* need to start coroutine */ |
|
|
743 | next->flags &= ~CF_NEW; |
|
|
744 | /* first get rid of the old state */ |
|
|
745 | save_perl (prev); |
|
|
746 | /* setup coroutine call */ |
|
|
747 | setup_coro (next); |
|
|
748 | /* need a new stack */ |
|
|
749 | assert (!next->cctx); |
|
|
750 | } |
721 | else |
751 | else |
722 | { |
752 | { |
723 | SAVE (prev, -1); /* first get rid of the old state */ |
753 | /* coroutine already started */ |
724 | |
754 | save_perl (prev); |
725 | if (flags & TRANSFER_SAVE_CCTXT) |
755 | load_perl (next); |
726 | { |
|
|
727 | if (!prev->stack) |
|
|
728 | allocate_stack (prev, 0); |
|
|
729 | |
|
|
730 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
731 | { |
|
|
732 | setup_coro (next); |
|
|
733 | |
|
|
734 | prev->stack->refcnt++; |
|
|
735 | prev->stack->usecnt++; |
|
|
736 | next->stack = prev->stack; |
|
|
737 | next->gencnt = prev->gencnt; |
|
|
738 | } |
|
|
739 | else |
|
|
740 | { |
|
|
741 | allocate_stack (next, 1); |
|
|
742 | coro_create (&(next->stack->cctx), |
|
|
743 | setup_coro, (void *)next, |
|
|
744 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
745 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
746 | /* don't add any code here */ |
|
|
747 | } |
|
|
748 | } |
|
|
749 | else |
|
|
750 | setup_coro (next); |
|
|
751 | } |
756 | } |
752 | |
757 | |
753 | /* |
758 | prev__cctx = prev->cctx; |
754 | * xnext is now either prev or next, depending on wether |
759 | |
755 | * we switched the c stack or not. that's why i use a global |
760 | /* possibly "free" the cctx */ |
756 | * variable, that should become thread-specific at one point. |
761 | if (prev__cctx->idle_sp == STACKLEVEL) |
757 | */ |
762 | { |
758 | xnext->cursp = stacklevel; |
763 | /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
759 | } |
764 | assert (PL_top_env == prev__cctx->top_env); |
760 | |
765 | |
761 | if (coro_mortal) |
766 | prev->cctx = 0; |
|
|
767 | |
|
|
768 | cctx_put (prev__cctx); |
|
|
769 | prev__cctx->inuse = 0; |
|
|
770 | } |
|
|
771 | |
|
|
772 | if (!next->cctx) |
|
|
773 | { |
|
|
774 | next->cctx = cctx_get (); |
|
|
775 | assert (!next->cctx->inuse); |
|
|
776 | next->cctx->inuse = 1; |
|
|
777 | } |
|
|
778 | |
|
|
779 | if (prev__cctx != next->cctx) |
|
|
780 | { |
|
|
781 | prev__cctx->top_env = PL_top_env; |
|
|
782 | PL_top_env = next->cctx->top_env; |
|
|
783 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
|
|
784 | } |
|
|
785 | |
|
|
786 | free_coro_mortal (); |
|
|
787 | |
|
|
788 | UNLOCK; |
762 | { |
789 | } |
763 | SvREFCNT_dec (coro_mortal); |
790 | } |
764 | coro_mortal = 0; |
791 | |
|
|
792 | struct transfer_args |
|
|
793 | { |
|
|
794 | struct coro *prev, *next; |
|
|
795 | }; |
|
|
796 | |
|
|
797 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next) |
|
|
798 | |
|
|
799 | static void |
|
|
800 | coro_state_destroy (struct coro *coro) |
|
|
801 | { |
|
|
802 | if (coro->refcnt--) |
|
|
803 | return; |
|
|
804 | |
|
|
805 | if (coro->mainstack && coro->mainstack != main_mainstack) |
765 | } |
806 | { |
766 | } |
807 | struct coro temp; |
|
|
808 | Zero (&temp, 1, struct coro); |
|
|
809 | temp.save = CORO_SAVE_ALL; |
767 | |
810 | |
768 | #define SV_CORO(sv,func) \ |
811 | if (coro->flags & CF_RUNNING) |
769 | do { \ |
812 | croak ("FATAL: tried to destroy currently running coroutine"); |
770 | if (SvROK (sv)) \ |
|
|
771 | sv = SvRV (sv); \ |
|
|
772 | \ |
|
|
773 | if (SvTYPE(sv) == SVt_PVHV) \ |
|
|
774 | { \ |
|
|
775 | HE *he = hv_fetch_ent((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
|
|
776 | \ |
|
|
777 | if (!he) \ |
|
|
778 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
779 | \ |
|
|
780 | (sv) = SvRV (HeVAL(he)); \ |
|
|
781 | } \ |
|
|
782 | \ |
|
|
783 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
784 | if (!SvOBJECT(sv) || SvSTASH(sv) != coro_state_stash) \ |
|
|
785 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
786 | \ |
|
|
787 | } while(0) |
|
|
788 | |
813 | |
789 | #define SvSTATE(sv) (struct coro *)SvIV (sv) |
814 | save_perl (&temp); |
|
|
815 | load_perl (coro); |
790 | |
816 | |
|
|
817 | coro_destroy_stacks (); |
|
|
818 | |
|
|
819 | load_perl (&temp); /* this will get rid of defsv etc.. */ |
|
|
820 | |
|
|
821 | coro->mainstack = 0; |
|
|
822 | } |
|
|
823 | |
|
|
824 | cctx_destroy (coro->cctx); |
|
|
825 | SvREFCNT_dec (coro->args); |
|
|
826 | Safefree (coro); |
|
|
827 | } |
|
|
828 | |
791 | static void |
829 | static int |
|
|
830 | coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
|
|
831 | { |
|
|
832 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
833 | mg->mg_ptr = 0; |
|
|
834 | |
|
|
835 | coro_state_destroy (coro); |
|
|
836 | |
|
|
837 | return 0; |
|
|
838 | } |
|
|
839 | |
|
|
840 | static int |
|
|
841 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
842 | { |
|
|
843 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
844 | |
|
|
845 | ++coro->refcnt; |
|
|
846 | |
|
|
847 | return 0; |
|
|
848 | } |
|
|
849 | |
|
|
850 | static MGVTBL coro_state_vtbl = { |
|
|
851 | 0, 0, 0, 0, |
|
|
852 | coro_state_clear, |
|
|
853 | 0, |
|
|
854 | #ifdef MGf_DUP |
|
|
855 | coro_state_dup, |
|
|
856 | #else |
|
|
857 | # define MGf_DUP 0 |
|
|
858 | #endif |
|
|
859 | }; |
|
|
860 | |
|
|
861 | static struct coro * |
|
|
862 | SvSTATE (SV *coro) |
|
|
863 | { |
|
|
864 | HV *stash; |
|
|
865 | MAGIC *mg; |
|
|
866 | |
|
|
867 | if (SvROK (coro)) |
|
|
868 | coro = SvRV (coro); |
|
|
869 | |
|
|
870 | stash = SvSTASH (coro); |
|
|
871 | if (stash != coro_stash && stash != coro_state_stash) |
|
|
872 | { |
|
|
873 | /* very slow, but rare, check */ |
|
|
874 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
875 | croak ("Coro::State object required"); |
|
|
876 | } |
|
|
877 | |
|
|
878 | mg = SvMAGIC (coro); |
|
|
879 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
880 | return (struct coro *)mg->mg_ptr; |
|
|
881 | } |
|
|
882 | |
|
|
883 | static void |
|
|
884 | prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
|
|
885 | { |
|
|
886 | ta->prev = SvSTATE (prev_sv); |
|
|
887 | ta->next = SvSTATE (next_sv); |
|
|
888 | } |
|
|
889 | |
|
|
890 | static void |
792 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
891 | api_transfer (SV *prev_sv, SV *next_sv) |
793 | { |
892 | { |
794 | SV_CORO (prev, "Coro::transfer"); |
893 | struct transfer_args ta; |
795 | SV_CORO (next, "Coro::transfer"); |
|
|
796 | |
894 | |
797 | transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags); |
895 | prepare_transfer (&ta, prev_sv, next_sv); |
|
|
896 | TRANSFER (ta); |
|
|
897 | } |
|
|
898 | |
|
|
899 | static int |
|
|
900 | api_save (SV *coro_sv, int new_save) |
|
|
901 | { |
|
|
902 | struct coro *coro = SvSTATE (coro_sv); |
|
|
903 | int old_save = coro->save; |
|
|
904 | |
|
|
905 | if (new_save >= 0) |
|
|
906 | coro->save = new_save; |
|
|
907 | |
|
|
908 | return old_save; |
798 | } |
909 | } |
799 | |
910 | |
800 | /** Coro ********************************************************************/ |
911 | /** Coro ********************************************************************/ |
801 | |
912 | |
802 | #define PRIO_MAX 3 |
913 | #define PRIO_MAX 3 |
… | |
… | |
805 | #define PRIO_LOW -1 |
916 | #define PRIO_LOW -1 |
806 | #define PRIO_IDLE -3 |
917 | #define PRIO_IDLE -3 |
807 | #define PRIO_MIN -4 |
918 | #define PRIO_MIN -4 |
808 | |
919 | |
809 | /* for Coro.pm */ |
920 | /* for Coro.pm */ |
810 | static GV *coro_current, *coro_idle; |
921 | static SV *coro_current; |
811 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
922 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
812 | static int coro_nready; |
923 | static int coro_nready; |
813 | |
924 | |
814 | static void |
925 | static void |
815 | coro_enq (SV *sv) |
926 | coro_enq (SV *coro_sv) |
816 | { |
927 | { |
817 | if (SvTYPE (sv) == SVt_PVHV) |
|
|
818 | { |
|
|
819 | SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
|
|
820 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
821 | |
|
|
822 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
823 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
824 | : prio; |
|
|
825 | |
|
|
826 | av_push (coro_ready [prio - PRIO_MIN], sv); |
928 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
827 | coro_nready++; |
929 | coro_nready++; |
828 | |
|
|
829 | return; |
|
|
830 | } |
|
|
831 | |
|
|
832 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
833 | } |
930 | } |
834 | |
931 | |
835 | static SV * |
932 | static SV * |
836 | coro_deq (int min_prio) |
933 | coro_deq (int min_prio) |
837 | { |
934 | { |
… | |
… | |
840 | min_prio -= PRIO_MIN; |
937 | min_prio -= PRIO_MIN; |
841 | if (min_prio < 0) |
938 | if (min_prio < 0) |
842 | min_prio = 0; |
939 | min_prio = 0; |
843 | |
940 | |
844 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
941 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
845 | if (av_len (coro_ready[prio]) >= 0) |
942 | if (AvFILLp (coro_ready [prio]) >= 0) |
846 | { |
943 | { |
847 | coro_nready--; |
944 | coro_nready--; |
848 | return av_shift (coro_ready[prio]); |
945 | return av_shift (coro_ready [prio]); |
849 | } |
946 | } |
850 | |
947 | |
851 | return 0; |
948 | return 0; |
852 | } |
949 | } |
853 | |
950 | |
854 | static void |
951 | static int |
855 | api_ready (SV *coro) |
952 | api_ready (SV *coro_sv) |
856 | { |
953 | { |
|
|
954 | struct coro *coro; |
|
|
955 | |
857 | if (SvROK (coro)) |
956 | if (SvROK (coro_sv)) |
858 | coro = SvRV (coro); |
957 | coro_sv = SvRV (coro_sv); |
859 | |
958 | |
|
|
959 | coro = SvSTATE (coro_sv); |
|
|
960 | |
|
|
961 | if (coro->flags & CF_READY) |
|
|
962 | return 0; |
|
|
963 | |
|
|
964 | coro->flags |= CF_READY; |
|
|
965 | |
|
|
966 | LOCK; |
860 | coro_enq (SvREFCNT_inc (coro)); |
967 | coro_enq (SvREFCNT_inc (coro_sv)); |
|
|
968 | UNLOCK; |
|
|
969 | |
|
|
970 | return 1; |
|
|
971 | } |
|
|
972 | |
|
|
973 | static int |
|
|
974 | api_is_ready (SV *coro_sv) |
|
|
975 | { |
|
|
976 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
|
|
977 | } |
|
|
978 | |
|
|
979 | static void |
|
|
980 | prepare_schedule (struct transfer_args *ta) |
|
|
981 | { |
|
|
982 | SV *prev, *next; |
|
|
983 | |
|
|
984 | for (;;) |
|
|
985 | { |
|
|
986 | LOCK; |
|
|
987 | next = coro_deq (PRIO_MIN); |
|
|
988 | UNLOCK; |
|
|
989 | |
|
|
990 | if (next) |
|
|
991 | break; |
|
|
992 | |
|
|
993 | { |
|
|
994 | dSP; |
|
|
995 | |
|
|
996 | ENTER; |
|
|
997 | SAVETMPS; |
|
|
998 | |
|
|
999 | PUSHMARK (SP); |
|
|
1000 | PUTBACK; |
|
|
1001 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
|
|
1002 | |
|
|
1003 | FREETMPS; |
|
|
1004 | LEAVE; |
|
|
1005 | } |
|
|
1006 | } |
|
|
1007 | |
|
|
1008 | prev = SvRV (coro_current); |
|
|
1009 | SvRV_set (coro_current, next); |
|
|
1010 | |
|
|
1011 | /* free this only after the transfer */ |
|
|
1012 | LOCK; |
|
|
1013 | free_coro_mortal (); |
|
|
1014 | UNLOCK; |
|
|
1015 | coro_mortal = prev; |
|
|
1016 | |
|
|
1017 | assert (!SvROK(prev));//D |
|
|
1018 | assert (!SvROK(next));//D |
|
|
1019 | |
|
|
1020 | ta->prev = SvSTATE (prev); |
|
|
1021 | ta->next = SvSTATE (next); |
|
|
1022 | |
|
|
1023 | assert (ta->next->flags & CF_READY); |
|
|
1024 | ta->next->flags &= ~CF_READY; |
|
|
1025 | } |
|
|
1026 | |
|
|
1027 | static void |
|
|
1028 | prepare_cede (struct transfer_args *ta) |
|
|
1029 | { |
|
|
1030 | api_ready (coro_current); |
|
|
1031 | prepare_schedule (ta); |
|
|
1032 | } |
|
|
1033 | |
|
|
1034 | static int |
|
|
1035 | prepare_cede_notself (struct transfer_args *ta) |
|
|
1036 | { |
|
|
1037 | if (coro_nready) |
|
|
1038 | { |
|
|
1039 | SV *prev = SvRV (coro_current); |
|
|
1040 | prepare_schedule (ta); |
|
|
1041 | api_ready (prev); |
|
|
1042 | return 1; |
|
|
1043 | } |
|
|
1044 | else |
|
|
1045 | return 0; |
861 | } |
1046 | } |
862 | |
1047 | |
863 | static void |
1048 | static void |
864 | api_schedule (void) |
1049 | api_schedule (void) |
865 | { |
1050 | { |
866 | SV *prev, *next; |
1051 | struct transfer_args ta; |
867 | |
1052 | |
868 | prev = SvRV (GvSV (coro_current)); |
1053 | prepare_schedule (&ta); |
869 | next = coro_deq (PRIO_MIN); |
1054 | TRANSFER (ta); |
870 | |
|
|
871 | if (!next) |
|
|
872 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
|
|
873 | |
|
|
874 | /* free this only after the transfer */ |
|
|
875 | coro_mortal = prev; |
|
|
876 | SV_CORO (prev, "Coro::schedule"); |
|
|
877 | |
|
|
878 | SvRV (GvSV (coro_current)) = next; |
|
|
879 | |
|
|
880 | SV_CORO (next, "Coro::schedule"); |
|
|
881 | |
|
|
882 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
|
|
883 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
884 | } |
1055 | } |
885 | |
1056 | |
886 | static void |
1057 | static int |
887 | api_cede (void) |
1058 | api_cede (void) |
888 | { |
1059 | { |
889 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
1060 | struct transfer_args ta; |
890 | |
1061 | |
891 | api_schedule (); |
1062 | prepare_cede (&ta); |
|
|
1063 | |
|
|
1064 | if (ta.prev != ta.next) |
|
|
1065 | { |
|
|
1066 | TRANSFER (ta); |
|
|
1067 | return 1; |
|
|
1068 | } |
|
|
1069 | else |
|
|
1070 | return 0; |
|
|
1071 | } |
|
|
1072 | |
|
|
1073 | static int |
|
|
1074 | api_cede_notself (void) |
|
|
1075 | { |
|
|
1076 | struct transfer_args ta; |
|
|
1077 | |
|
|
1078 | if (prepare_cede_notself (&ta)) |
|
|
1079 | { |
|
|
1080 | TRANSFER (ta); |
|
|
1081 | return 1; |
|
|
1082 | } |
|
|
1083 | else |
|
|
1084 | return 0; |
892 | } |
1085 | } |
893 | |
1086 | |
894 | MODULE = Coro::State PACKAGE = Coro::State |
1087 | MODULE = Coro::State PACKAGE = Coro::State |
895 | |
1088 | |
896 | PROTOTYPES: ENABLE |
1089 | PROTOTYPES: DISABLE |
897 | |
1090 | |
898 | BOOT: |
1091 | BOOT: |
899 | { /* {} necessary for stoopid perl-5.6.x */ |
1092 | { |
900 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
1093 | #ifdef USE_ITHREADS |
901 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
1094 | MUTEX_INIT (&coro_mutex); |
|
|
1095 | #endif |
|
|
1096 | BOOT_PAGESIZE; |
|
|
1097 | |
902 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1098 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
903 | |
1099 | |
904 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1100 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); |
905 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1101 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); |
906 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1102 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV)); |
907 | newCONSTSUB (coro_state_stash, "SAVE_CURPM", newSViv (TRANSFER_SAVE_CURPM)); |
1103 | newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV)); |
908 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
1104 | newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); |
909 | |
|
|
910 | if (!padlist_cache) |
|
|
911 | padlist_cache = newHV (); |
|
|
912 | |
1105 | |
913 | main_mainstack = PL_mainstack; |
1106 | main_mainstack = PL_mainstack; |
914 | |
1107 | |
915 | coroapi.ver = CORO_API_VERSION; |
1108 | coroapi.ver = CORO_API_VERSION; |
916 | coroapi.transfer = api_transfer; |
1109 | coroapi.transfer = api_transfer; |
917 | } |
|
|
918 | |
1110 | |
919 | Coro::State |
1111 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
920 | _newprocess(args) |
1112 | } |
921 | SV * args |
1113 | |
922 | PROTOTYPE: $ |
1114 | SV * |
|
|
1115 | new (char *klass, ...) |
923 | CODE: |
1116 | CODE: |
924 | Coro__State coro; |
1117 | { |
|
|
1118 | struct coro *coro; |
|
|
1119 | HV *hv; |
|
|
1120 | int i; |
925 | |
1121 | |
926 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
|
|
927 | croak ("Coro::State::_newprocess expects an arrayref"); |
|
|
928 | |
|
|
929 | New (0, coro, 1, struct coro); |
1122 | Newz (0, coro, 1, struct coro); |
|
|
1123 | coro->args = newAV (); |
|
|
1124 | coro->save = CORO_SAVE_ALL; |
|
|
1125 | coro->flags = CF_NEW; |
930 | |
1126 | |
931 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
1127 | hv = newHV (); |
932 | coro->mainstack = 0; /* actual work is done inside transfer */ |
1128 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
933 | coro->stack = 0; |
1129 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
934 | |
1130 | |
935 | RETVAL = coro; |
1131 | for (i = 1; i < items; i++) |
|
|
1132 | av_push (coro->args, newSVsv (ST (i))); |
|
|
1133 | } |
936 | OUTPUT: |
1134 | OUTPUT: |
937 | RETVAL |
1135 | RETVAL |
938 | |
1136 | |
|
|
1137 | int |
|
|
1138 | save (SV *coro, int new_save = -1) |
|
|
1139 | CODE: |
|
|
1140 | RETVAL = api_save (coro, new_save); |
|
|
1141 | OUTPUT: |
|
|
1142 | RETVAL |
|
|
1143 | |
939 | void |
1144 | void |
940 | transfer(prev, next, flags) |
1145 | _set_stacklevel (...) |
941 | SV *prev |
1146 | ALIAS: |
942 | SV *next |
1147 | Coro::State::transfer = 1 |
943 | int flags |
1148 | Coro::schedule = 2 |
944 | PROTOTYPE: @ |
1149 | Coro::cede = 3 |
|
|
1150 | Coro::cede_notself = 4 |
945 | CODE: |
1151 | CODE: |
946 | PUTBACK; |
1152 | { |
947 | SV_CORO (next, "Coro::transfer"); |
1153 | struct transfer_args ta; |
948 | SV_CORO (prev, "Coro::transfer"); |
1154 | |
949 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
1155 | switch (ix) |
950 | SPAGAIN; |
1156 | { |
|
|
1157 | case 0: |
|
|
1158 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
|
|
1159 | ta.next = 0; |
|
|
1160 | break; |
|
|
1161 | |
|
|
1162 | case 1: |
|
|
1163 | if (items != 2) |
|
|
1164 | croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
|
|
1165 | |
|
|
1166 | prepare_transfer (&ta, ST (0), ST (1)); |
|
|
1167 | break; |
|
|
1168 | |
|
|
1169 | case 2: |
|
|
1170 | prepare_schedule (&ta); |
|
|
1171 | break; |
|
|
1172 | |
|
|
1173 | case 3: |
|
|
1174 | prepare_cede (&ta); |
|
|
1175 | break; |
|
|
1176 | |
|
|
1177 | case 4: |
|
|
1178 | if (!prepare_cede_notself (&ta)) |
|
|
1179 | XSRETURN_EMPTY; |
|
|
1180 | |
|
|
1181 | break; |
|
|
1182 | } |
|
|
1183 | |
|
|
1184 | BARRIER; |
|
|
1185 | TRANSFER (ta); |
|
|
1186 | } |
951 | |
1187 | |
952 | void |
1188 | void |
953 | DESTROY(coro) |
1189 | _clone_state_from (SV *dst, SV *src) |
954 | Coro::State coro |
1190 | CODE: |
955 | CODE: |
1191 | { |
|
|
1192 | struct coro *coro_src = SvSTATE (src); |
956 | |
1193 | |
957 | if (coro->mainstack && coro->mainstack != main_mainstack) |
1194 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
958 | { |
|
|
959 | struct coro temp; |
|
|
960 | |
1195 | |
961 | PUTBACK; |
1196 | ++coro_src->refcnt; |
962 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
1197 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
963 | LOAD(aTHX_ coro); |
1198 | } |
964 | SPAGAIN; |
|
|
965 | |
|
|
966 | destroy_stacks (aTHX); |
|
|
967 | |
|
|
968 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
|
|
969 | SPAGAIN; |
|
|
970 | |
|
|
971 | coro->mainstack = 0; |
|
|
972 | } |
|
|
973 | |
|
|
974 | deallocate_stack (coro); |
|
|
975 | |
|
|
976 | Safefree (coro); |
|
|
977 | |
1199 | |
978 | void |
1200 | void |
979 | flush() |
|
|
980 | CODE: |
|
|
981 | #ifdef MAY_FLUSH |
|
|
982 | flush_padlist_cache (); |
|
|
983 | #endif |
|
|
984 | |
|
|
985 | void |
|
|
986 | _exit(code) |
1201 | _exit (code) |
987 | int code |
1202 | int code |
988 | PROTOTYPE: $ |
1203 | PROTOTYPE: $ |
989 | CODE: |
1204 | CODE: |
990 | #if defined(__GLIBC__) || _POSIX_C_SOURCE |
|
|
991 | _exit (code); |
1205 | _exit (code); |
992 | #else |
|
|
993 | signal (SIGTERM, SIG_DFL); |
|
|
994 | raise (SIGTERM); |
|
|
995 | exit (code); |
|
|
996 | #endif |
|
|
997 | |
1206 | |
998 | MODULE = Coro::State PACKAGE = Coro::Cont |
1207 | int |
|
|
1208 | cctx_count () |
|
|
1209 | CODE: |
|
|
1210 | RETVAL = cctx_count; |
|
|
1211 | OUTPUT: |
|
|
1212 | RETVAL |
999 | |
1213 | |
1000 | # this is slightly dirty (should expose a c-level api) |
1214 | int |
1001 | |
1215 | cctx_idle () |
1002 | void |
1216 | CODE: |
1003 | yield(...) |
1217 | RETVAL = cctx_idle; |
1004 | PROTOTYPE: @ |
1218 | OUTPUT: |
1005 | CODE: |
1219 | RETVAL |
1006 | static SV *returnstk; |
|
|
1007 | SV *sv; |
|
|
1008 | AV *defav = GvAV (PL_defgv); |
|
|
1009 | struct coro *prev, *next; |
|
|
1010 | |
|
|
1011 | if (!returnstk) |
|
|
1012 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
|
|
1013 | |
|
|
1014 | /* set up @_ -- ugly */ |
|
|
1015 | av_clear (defav); |
|
|
1016 | av_fill (defav, items - 1); |
|
|
1017 | while (items--) |
|
|
1018 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1019 | |
|
|
1020 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
|
|
1021 | sv = av_pop ((AV *)SvRV (returnstk)); |
|
|
1022 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
|
|
1023 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
|
|
1024 | SvREFCNT_dec (sv); |
|
|
1025 | |
|
|
1026 | transfer(aTHX_ prev, next, 0); |
|
|
1027 | |
1220 | |
1028 | MODULE = Coro::State PACKAGE = Coro |
1221 | MODULE = Coro::State PACKAGE = Coro |
1029 | |
1222 | |
1030 | # this is slightly dirty (should expose a c-level api) |
|
|
1031 | |
|
|
1032 | BOOT: |
1223 | BOOT: |
1033 | { |
1224 | { |
1034 | int i; |
1225 | int i; |
|
|
1226 | |
1035 | HV *stash = gv_stashpv ("Coro", TRUE); |
1227 | coro_stash = gv_stashpv ("Coro", TRUE); |
1036 | |
1228 | |
1037 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1229 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1038 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1230 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1039 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1231 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1040 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1232 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1041 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1233 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1042 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1234 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1043 | |
1235 | |
1044 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1236 | coro_current = get_sv ("Coro::current", FALSE); |
1045 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1237 | SvREADONLY_on (coro_current); |
1046 | |
1238 | |
1047 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1239 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1048 | coro_ready[i] = newAV (); |
1240 | coro_ready[i] = newAV (); |
1049 | |
1241 | |
1050 | { |
1242 | { |
1051 | SV *sv = perl_get_sv("Coro::API", 1); |
1243 | SV *sv = perl_get_sv("Coro::API", 1); |
1052 | |
1244 | |
1053 | coroapi.schedule = api_schedule; |
1245 | coroapi.schedule = api_schedule; |
|
|
1246 | coroapi.save = api_save; |
1054 | coroapi.cede = api_cede; |
1247 | coroapi.cede = api_cede; |
|
|
1248 | coroapi.cede_notself = api_cede_notself; |
1055 | coroapi.ready = api_ready; |
1249 | coroapi.ready = api_ready; |
|
|
1250 | coroapi.is_ready = api_is_ready; |
1056 | coroapi.nready = &coro_nready; |
1251 | coroapi.nready = &coro_nready; |
1057 | coroapi.current = coro_current; |
1252 | coroapi.current = coro_current; |
1058 | |
1253 | |
1059 | GCoroAPI = &coroapi; |
1254 | GCoroAPI = &coroapi; |
1060 | sv_setiv(sv, (IV)&coroapi); |
1255 | sv_setiv (sv, (IV)&coroapi); |
1061 | SvREADONLY_on(sv); |
1256 | SvREADONLY_on (sv); |
1062 | } |
1257 | } |
1063 | } |
1258 | } |
1064 | |
1259 | |
1065 | void |
1260 | void |
1066 | ready(self) |
1261 | _set_current (SV *current) |
1067 | SV * self |
|
|
1068 | PROTOTYPE: $ |
1262 | PROTOTYPE: $ |
1069 | CODE: |
1263 | CODE: |
1070 | api_ready (self); |
1264 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
1265 | SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
1071 | |
1266 | |
1072 | int |
1267 | int |
|
|
1268 | prio (Coro::State coro, int newprio = 0) |
|
|
1269 | ALIAS: |
|
|
1270 | nice = 1 |
|
|
1271 | CODE: |
|
|
1272 | { |
|
|
1273 | RETVAL = coro->prio; |
|
|
1274 | |
|
|
1275 | if (items > 1) |
|
|
1276 | { |
|
|
1277 | if (ix) |
|
|
1278 | newprio = coro->prio - newprio; |
|
|
1279 | |
|
|
1280 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
1281 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
1282 | |
|
|
1283 | coro->prio = newprio; |
|
|
1284 | } |
|
|
1285 | } |
|
|
1286 | OUTPUT: |
|
|
1287 | RETVAL |
|
|
1288 | |
|
|
1289 | SV * |
|
|
1290 | ready (SV *self) |
|
|
1291 | PROTOTYPE: $ |
|
|
1292 | CODE: |
|
|
1293 | RETVAL = boolSV (api_ready (self)); |
|
|
1294 | OUTPUT: |
|
|
1295 | RETVAL |
|
|
1296 | |
|
|
1297 | SV * |
|
|
1298 | is_ready (SV *self) |
|
|
1299 | PROTOTYPE: $ |
|
|
1300 | CODE: |
|
|
1301 | RETVAL = boolSV (api_is_ready (self)); |
|
|
1302 | OUTPUT: |
|
|
1303 | RETVAL |
|
|
1304 | |
|
|
1305 | int |
1073 | nready(...) |
1306 | nready (...) |
1074 | PROTOTYPE: |
1307 | PROTOTYPE: |
1075 | CODE: |
1308 | CODE: |
1076 | RETVAL = coro_nready; |
1309 | RETVAL = coro_nready; |
1077 | OUTPUT: |
1310 | OUTPUT: |
1078 | RETVAL |
1311 | RETVAL |
1079 | |
1312 | |
|
|
1313 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
1314 | |
|
|
1315 | SV * |
|
|
1316 | _get_state () |
|
|
1317 | CODE: |
|
|
1318 | { |
|
|
1319 | struct io_state *data; |
|
|
1320 | |
|
|
1321 | RETVAL = newSV (sizeof (struct io_state)); |
|
|
1322 | data = (struct io_state *)SvPVX (RETVAL); |
|
|
1323 | SvCUR_set (RETVAL, sizeof (struct io_state)); |
|
|
1324 | SvPOK_only (RETVAL); |
|
|
1325 | |
|
|
1326 | data->errorno = errno; |
|
|
1327 | data->laststype = PL_laststype; |
|
|
1328 | data->laststatval = PL_laststatval; |
|
|
1329 | data->statcache = PL_statcache; |
|
|
1330 | } |
|
|
1331 | OUTPUT: |
|
|
1332 | RETVAL |
|
|
1333 | |
1080 | void |
1334 | void |
1081 | schedule(...) |
1335 | _set_state (char *data_) |
1082 | PROTOTYPE: |
1336 | PROTOTYPE: $ |
1083 | CODE: |
1337 | CODE: |
1084 | api_schedule (); |
1338 | { |
|
|
1339 | struct io_state *data = (void *)data_; |
1085 | |
1340 | |
1086 | void |
1341 | errno = data->errorno; |
1087 | cede(...) |
1342 | PL_laststype = data->laststype; |
1088 | PROTOTYPE: |
1343 | PL_laststatval = data->laststatval; |
1089 | CODE: |
1344 | PL_statcache = data->statcache; |
1090 | api_cede (); |
1345 | } |
1091 | |
1346 | |