… | |
… | |
95 | # define GV_NOTQUAL 0 |
95 | # define GV_NOTQUAL 0 |
96 | #endif |
96 | #endif |
97 | #ifndef newSV |
97 | #ifndef newSV |
98 | # define newSV(l) NEWSV(0,l) |
98 | # define newSV(l) NEWSV(0,l) |
99 | #endif |
99 | #endif |
|
|
100 | #ifndef CvISXSUB_on |
|
|
101 | # define CvISXSUB_on(cv) (void)cv |
|
|
102 | #endif |
100 | |
103 | |
101 | /* 5.8.7 */ |
104 | /* 5.8.7 */ |
102 | #ifndef SvRV_set |
105 | #ifndef SvRV_set |
103 | # define SvRV_set(s,v) SvRV(s) = (v) |
106 | # define SvRV_set(s,v) SvRV(s) = (v) |
104 | #endif |
107 | #endif |
… | |
… | |
117 | #endif |
120 | #endif |
118 | |
121 | |
119 | /* The next macros try to return the current stack pointer, in an as |
122 | /* The next macros try to return the current stack pointer, in an as |
120 | * portable way as possible. */ |
123 | * portable way as possible. */ |
121 | #if __GNUC__ >= 4 |
124 | #if __GNUC__ >= 4 |
|
|
125 | # define dSTACKLEVEL int stacklevel_dummy |
122 | # define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) |
126 | # define STACKLEVEL __builtin_frame_address (0) |
123 | #else |
127 | #else |
124 | # define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel |
128 | # define dSTACKLEVEL volatile void *stacklevel |
|
|
129 | # define STACKLEVEL ((void *)&stacklevel) |
125 | #endif |
130 | #endif |
126 | |
131 | |
127 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
132 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
128 | |
133 | |
129 | #if __GNUC__ >= 3 |
134 | #if __GNUC__ >= 3 |
… | |
… | |
140 | #define expect_true(expr) expect ((expr) != 0, 1) |
145 | #define expect_true(expr) expect ((expr) != 0, 1) |
141 | |
146 | |
142 | #define NOINLINE attribute ((noinline)) |
147 | #define NOINLINE attribute ((noinline)) |
143 | |
148 | |
144 | #include "CoroAPI.h" |
149 | #include "CoroAPI.h" |
|
|
150 | #define GCoroAPI (&coroapi) /* very sneaky */ |
145 | |
151 | |
146 | #ifdef USE_ITHREADS |
152 | #ifdef USE_ITHREADS |
147 | # if CORO_PTHREAD |
153 | # if CORO_PTHREAD |
148 | static void *coro_thx; |
154 | static void *coro_thx; |
149 | # endif |
155 | # endif |
150 | #endif |
156 | #endif |
151 | |
157 | |
152 | /* helper storage struct for Coro::AIO */ |
|
|
153 | struct io_state |
|
|
154 | { |
|
|
155 | AV *res; |
|
|
156 | int errorno; |
|
|
157 | I32 laststype; /* U16 in 5.10.0 */ |
|
|
158 | int laststatval; |
|
|
159 | Stat_t statcache; |
|
|
160 | }; |
|
|
161 | |
|
|
162 | static double (*nvtime)(); /* so why doesn't it take void? */ |
158 | static double (*nvtime)(); /* so why doesn't it take void? */ |
|
|
159 | |
|
|
160 | /* we hijack an hopefully unused CV flag for our purposes */ |
|
|
161 | #define CVf_SLF 0x4000 |
|
|
162 | static OP *pp_slf (pTHX); |
163 | |
163 | |
164 | static U32 cctx_gen; |
164 | static U32 cctx_gen; |
165 | static size_t cctx_stacksize = CORO_STACKSIZE; |
165 | static size_t cctx_stacksize = CORO_STACKSIZE; |
166 | static struct CoroAPI coroapi; |
166 | static struct CoroAPI coroapi; |
167 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
167 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
… | |
… | |
257 | /* statistics */ |
257 | /* statistics */ |
258 | int usecount; /* number of transfers to this coro */ |
258 | int usecount; /* number of transfers to this coro */ |
259 | |
259 | |
260 | /* coro process data */ |
260 | /* coro process data */ |
261 | int prio; |
261 | int prio; |
262 | SV *throw; /* exception to be thrown */ |
262 | SV *except; /* exception to be thrown */ |
263 | |
263 | |
264 | /* async_pool */ |
264 | /* async_pool */ |
265 | SV *saved_deffh; |
265 | SV *saved_deffh; |
266 | |
266 | |
267 | /* linked list */ |
267 | /* linked list */ |
… | |
… | |
273 | |
273 | |
274 | /* the following variables are effectively part of the perl context */ |
274 | /* the following variables are effectively part of the perl context */ |
275 | /* and get copied between struct coro and these variables */ |
275 | /* and get copied between struct coro and these variables */ |
276 | /* the mainr easonw e don't support windows process emulation */ |
276 | /* the mainr easonw e don't support windows process emulation */ |
277 | static struct CoroSLF slf_frame; /* the current slf frame */ |
277 | static struct CoroSLF slf_frame; /* the current slf frame */ |
278 | static SV *coro_throw; |
|
|
279 | |
278 | |
280 | /** Coro ********************************************************************/ |
279 | /** Coro ********************************************************************/ |
281 | |
280 | |
282 | #define PRIO_MAX 3 |
281 | #define PRIO_MAX 3 |
283 | #define PRIO_HIGH 1 |
282 | #define PRIO_HIGH 1 |
… | |
… | |
384 | SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
383 | SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
385 | |
384 | |
386 | return 0; |
385 | return 0; |
387 | } |
386 | } |
388 | |
387 | |
389 | #define CORO_MAGIC_type_cv PERL_MAGIC_ext |
388 | #define CORO_MAGIC_type_cv 26 |
390 | #define CORO_MAGIC_type_state PERL_MAGIC_ext |
389 | #define CORO_MAGIC_type_state PERL_MAGIC_ext |
391 | |
390 | |
392 | static MGVTBL coro_cv_vtbl = { |
391 | static MGVTBL coro_cv_vtbl = { |
393 | 0, 0, 0, 0, |
392 | 0, 0, 0, 0, |
394 | coro_cv_free |
393 | coro_cv_free |
395 | }; |
394 | }; |
396 | |
395 | |
|
|
396 | #define CORO_MAGIC_NN(sv, type) \ |
|
|
397 | (expect_true (SvMAGIC (sv)->mg_type == type) \ |
|
|
398 | ? SvMAGIC (sv) \ |
|
|
399 | : mg_find (sv, type)) |
|
|
400 | |
397 | #define CORO_MAGIC(sv, type) \ |
401 | #define CORO_MAGIC(sv, type) \ |
398 | expect_true (SvMAGIC (sv)) \ |
402 | (expect_true (SvMAGIC (sv)) \ |
399 | ? expect_true (SvMAGIC (sv)->mg_type == type) \ |
403 | ? CORO_MAGIC_NN (sv, type) \ |
400 | ? SvMAGIC (sv) \ |
|
|
401 | : mg_find (sv, type) \ |
|
|
402 | : 0 |
404 | : 0) |
403 | |
405 | |
404 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
406 | #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) |
407 | #define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) |
406 | |
408 | |
407 | INLINE struct coro * |
409 | INLINE struct coro * |
408 | SvSTATE_ (pTHX_ SV *coro) |
410 | SvSTATE_ (pTHX_ SV *coro) |
409 | { |
411 | { |
410 | HV *stash; |
412 | HV *stash; |
… | |
… | |
428 | return (struct coro *)mg->mg_ptr; |
430 | return (struct coro *)mg->mg_ptr; |
429 | } |
431 | } |
430 | |
432 | |
431 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
433 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
432 | |
434 | |
433 | /* fastert than SvSTATE, but expects a coroutine hv */ |
435 | /* faster than SvSTATE, but expects a coroutine hv */ |
434 | INLINE struct coro * |
436 | #define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr) |
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)) |
437 | #define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
445 | |
438 | |
446 | /* the next two functions merely cache the padlists */ |
439 | /* the next two functions merely cache the padlists */ |
447 | static void |
440 | static void |
448 | get_padlist (pTHX_ CV *cv) |
441 | get_padlist (pTHX_ CV *cv) |
… | |
… | |
518 | |
511 | |
519 | PUTBACK; |
512 | PUTBACK; |
520 | } |
513 | } |
521 | |
514 | |
522 | slf_frame = c->slf_frame; |
515 | slf_frame = c->slf_frame; |
523 | coro_throw = c->throw; |
516 | CORO_THROW = c->except; |
524 | } |
517 | } |
525 | |
518 | |
526 | static void |
519 | static void |
527 | save_perl (pTHX_ Coro__State c) |
520 | save_perl (pTHX_ Coro__State c) |
528 | { |
521 | { |
529 | c->throw = coro_throw; |
522 | c->except = CORO_THROW; |
530 | c->slf_frame = slf_frame; |
523 | c->slf_frame = slf_frame; |
531 | |
524 | |
532 | { |
525 | { |
533 | dSP; |
526 | dSP; |
534 | I32 cxix = cxstack_ix; |
527 | I32 cxix = cxstack_ix; |
… | |
… | |
827 | slf_check_nop (pTHX_ struct CoroSLF *frame) |
820 | slf_check_nop (pTHX_ struct CoroSLF *frame) |
828 | { |
821 | { |
829 | return 0; |
822 | return 0; |
830 | } |
823 | } |
831 | |
824 | |
|
|
825 | static UNOP coro_setup_op; |
|
|
826 | |
832 | static void NOINLINE /* noinline to keep it out of the transfer fast path */ |
827 | static void NOINLINE /* noinline to keep it out of the transfer fast path */ |
833 | coro_setup (pTHX_ struct coro *coro) |
828 | coro_setup (pTHX_ struct coro *coro) |
834 | { |
829 | { |
835 | /* |
830 | /* |
836 | * emulate part of the perl startup here. |
831 | * emulate part of the perl startup here. |
… | |
… | |
864 | { |
859 | { |
865 | dSP; |
860 | dSP; |
866 | UNOP myop; |
861 | UNOP myop; |
867 | |
862 | |
868 | Zero (&myop, 1, UNOP); |
863 | Zero (&myop, 1, UNOP); |
869 | myop.op_next = Nullop; |
864 | myop.op_next = Nullop; |
870 | myop.op_flags = OPf_WANT_VOID; |
865 | myop.op_flags = OPf_WANT_VOID; |
871 | |
866 | |
872 | PUSHMARK (SP); |
867 | PUSHMARK (SP); |
873 | XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
868 | XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
874 | PUTBACK; |
869 | PUTBACK; |
… | |
… | |
881 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
876 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
882 | */ |
877 | */ |
883 | slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
878 | 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 */ |
879 | slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
885 | |
880 | |
886 | coro_throw = coro->throw; |
881 | /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ |
|
|
882 | coro_setup_op.op_next = PL_op; |
|
|
883 | coro_setup_op.op_type = OP_CUSTOM; |
|
|
884 | coro_setup_op.op_ppaddr = pp_slf; |
|
|
885 | /* no flags required, as an init function won't be called */ |
|
|
886 | |
|
|
887 | PL_op = (OP *)&coro_setup_op; |
|
|
888 | |
|
|
889 | /* copy throw, in case it was set before coro_setup */ |
|
|
890 | CORO_THROW = coro->except; |
887 | } |
891 | } |
888 | |
892 | |
889 | static void |
893 | static void |
890 | coro_destruct (pTHX_ struct coro *coro) |
894 | coro_destruct (pTHX_ struct coro *coro) |
891 | { |
895 | { |
… | |
… | |
915 | |
919 | |
916 | SvREFCNT_dec (PL_diehook); |
920 | SvREFCNT_dec (PL_diehook); |
917 | SvREFCNT_dec (PL_warnhook); |
921 | SvREFCNT_dec (PL_warnhook); |
918 | |
922 | |
919 | SvREFCNT_dec (coro->saved_deffh); |
923 | SvREFCNT_dec (coro->saved_deffh); |
920 | SvREFCNT_dec (coro_throw); |
924 | SvREFCNT_dec (CORO_THROW); |
921 | |
925 | |
922 | coro_destruct_stacks (aTHX); |
926 | coro_destruct_stacks (aTHX); |
923 | } |
927 | } |
924 | |
928 | |
925 | INLINE void |
929 | INLINE void |
… | |
… | |
1054 | |
1058 | |
1055 | TAINT_NOT; |
1059 | TAINT_NOT; |
1056 | return 0; |
1060 | return 0; |
1057 | } |
1061 | } |
1058 | |
1062 | |
|
|
1063 | static struct coro_cctx *cctx_ssl_cctx; |
|
|
1064 | static struct CoroSLF cctx_ssl_frame; |
|
|
1065 | |
1059 | static void |
1066 | static void |
1060 | prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) |
1067 | slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
1061 | { |
1068 | { |
1062 | ta->prev = (struct coro *)cctx; |
1069 | ta->prev = (struct coro *)cctx_ssl_cctx; |
1063 | ta->next = 0; |
1070 | ta->next = 0; |
1064 | } |
1071 | } |
1065 | |
1072 | |
1066 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
1073 | static int |
1067 | /* _cctx_init should be careful, as it could be called at almost any time */ |
1074 | slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) |
1068 | /* during execution of a perl program */ |
1075 | { |
1069 | /* also initialises PL_top_env */ |
1076 | *frame = cctx_ssl_frame; |
|
|
1077 | |
|
|
1078 | return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ |
|
|
1079 | } |
|
|
1080 | |
|
|
1081 | /* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ |
1070 | static void NOINLINE |
1082 | static void NOINLINE |
1071 | cctx_prepare (pTHX_ coro_cctx *cctx) |
1083 | cctx_prepare (pTHX_ coro_cctx *cctx) |
1072 | { |
1084 | { |
1073 | dSP; |
|
|
1074 | UNOP myop; |
|
|
1075 | |
|
|
1076 | PL_top_env = &PL_start_env; |
1085 | PL_top_env = &PL_start_env; |
1077 | |
1086 | |
1078 | if (cctx->flags & CC_TRACE) |
1087 | if (cctx->flags & CC_TRACE) |
1079 | PL_runops = runops_trace; |
1088 | PL_runops = runops_trace; |
1080 | |
1089 | |
1081 | Zero (&myop, 1, UNOP); |
1090 | /* we already must be executing an SLF op, there is no other valid way |
1082 | myop.op_next = PL_op; |
1091 | * that can lead to creation of a new cctx */ |
1083 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
1092 | assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", |
|
|
1093 | slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); |
1084 | |
1094 | |
1085 | PUSHMARK (SP); |
1095 | /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ |
1086 | EXTEND (SP, 2); |
1096 | cctx_ssl_cctx = cctx; |
1087 | PUSHs (sv_2mortal (newSViv ((IV)cctx))); |
1097 | cctx_ssl_frame = slf_frame; |
1088 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
1098 | |
1089 | PUTBACK; |
1099 | slf_frame.prepare = slf_prepare_set_stacklevel; |
1090 | PL_op = (OP *)&myop; |
1100 | slf_frame.check = slf_check_set_stacklevel; |
1091 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1092 | SPAGAIN; |
|
|
1093 | } |
1101 | } |
1094 | |
1102 | |
1095 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
1103 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
1096 | INLINE void |
1104 | INLINE void |
1097 | transfer_tail (pTHX) |
1105 | transfer_tail (pTHX) |
… | |
… | |
1313 | dSTACKLEVEL; |
1321 | dSTACKLEVEL; |
1314 | |
1322 | |
1315 | /* sometimes transfer is only called to set idle_sp */ |
1323 | /* sometimes transfer is only called to set idle_sp */ |
1316 | if (expect_false (!next)) |
1324 | if (expect_false (!next)) |
1317 | { |
1325 | { |
1318 | ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; |
1326 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
1319 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1327 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1320 | } |
1328 | } |
1321 | else if (expect_true (prev != next)) |
1329 | else if (expect_true (prev != next)) |
1322 | { |
1330 | { |
1323 | coro_cctx *prev__cctx; |
1331 | coro_cctx *prev__cctx; |
… | |
… | |
1348 | |
1356 | |
1349 | prev__cctx = prev->cctx; |
1357 | prev__cctx = prev->cctx; |
1350 | |
1358 | |
1351 | /* possibly untie and reuse the cctx */ |
1359 | /* possibly untie and reuse the cctx */ |
1352 | if (expect_true ( |
1360 | if (expect_true ( |
1353 | prev__cctx->idle_sp == (void *)stacklevel |
1361 | prev__cctx->idle_sp == STACKLEVEL |
1354 | && !(prev__cctx->flags & CC_TRACE) |
1362 | && !(prev__cctx->flags & CC_TRACE) |
1355 | && !force_cctx |
1363 | && !force_cctx |
1356 | )) |
1364 | )) |
1357 | { |
1365 | { |
1358 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
1366 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
… | |
… | |
1541 | ENTER; |
1549 | ENTER; |
1542 | SAVETMPS; |
1550 | SAVETMPS; |
1543 | |
1551 | |
1544 | PUSHMARK (SP); |
1552 | PUSHMARK (SP); |
1545 | PUTBACK; |
1553 | PUTBACK; |
1546 | call_sv (sv_hook, G_DISCARD); |
1554 | call_sv (sv_hook, G_VOID | G_DISCARD); |
1547 | SPAGAIN; |
|
|
1548 | |
1555 | |
1549 | FREETMPS; |
1556 | FREETMPS; |
1550 | LEAVE; |
1557 | LEAVE; |
1551 | } |
1558 | } |
1552 | |
1559 | |
… | |
… | |
1579 | ENTER; |
1586 | ENTER; |
1580 | SAVETMPS; |
1587 | SAVETMPS; |
1581 | |
1588 | |
1582 | PUSHMARK (SP); |
1589 | PUSHMARK (SP); |
1583 | PUTBACK; |
1590 | PUTBACK; |
1584 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
1591 | call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD); |
1585 | SPAGAIN; |
|
|
1586 | |
1592 | |
1587 | FREETMPS; |
1593 | FREETMPS; |
1588 | LEAVE; |
1594 | LEAVE; |
1589 | continue; |
1595 | continue; |
1590 | } |
1596 | } |
… | |
… | |
1697 | if (coro->flags & CF_RUNNING) |
1703 | if (coro->flags & CF_RUNNING) |
1698 | PL_runops = RUNOPS_DEFAULT; |
1704 | PL_runops = RUNOPS_DEFAULT; |
1699 | else |
1705 | else |
1700 | coro->slot->runops = RUNOPS_DEFAULT; |
1706 | coro->slot->runops = RUNOPS_DEFAULT; |
1701 | } |
1707 | } |
|
|
1708 | } |
|
|
1709 | |
|
|
1710 | /*****************************************************************************/ |
|
|
1711 | /* schedule-like-function opcode (SLF) */ |
|
|
1712 | |
|
|
1713 | static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
|
|
1714 | static const CV *slf_cv; |
|
|
1715 | static SV **slf_argv; |
|
|
1716 | static int slf_argc, slf_arga; /* count, allocated */ |
|
|
1717 | static I32 slf_ax; /* top of stack, for restore */ |
|
|
1718 | |
|
|
1719 | /* this restores the stack in the case we patched the entersub, to */ |
|
|
1720 | /* recreate the stack frame as perl will on following calls */ |
|
|
1721 | /* since entersub cleared the stack */ |
|
|
1722 | static OP * |
|
|
1723 | pp_restore (pTHX) |
|
|
1724 | { |
|
|
1725 | int i; |
|
|
1726 | SV **SP = PL_stack_base + slf_ax; |
|
|
1727 | |
|
|
1728 | PUSHMARK (SP); |
|
|
1729 | |
|
|
1730 | EXTEND (SP, slf_argc + 1); |
|
|
1731 | |
|
|
1732 | for (i = 0; i < slf_argc; ++i) |
|
|
1733 | PUSHs (sv_2mortal (slf_argv [i])); |
|
|
1734 | |
|
|
1735 | PUSHs ((SV *)CvGV (slf_cv)); |
|
|
1736 | |
|
|
1737 | RETURNOP (slf_restore.op_first); |
|
|
1738 | } |
|
|
1739 | |
|
|
1740 | static void |
|
|
1741 | slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
|
|
1742 | { |
|
|
1743 | SV **arg = (SV **)slf_frame.data; |
|
|
1744 | |
|
|
1745 | prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
|
|
1746 | } |
|
|
1747 | |
|
|
1748 | static void |
|
|
1749 | slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1750 | { |
|
|
1751 | if (items != 2) |
|
|
1752 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
|
|
1753 | |
|
|
1754 | frame->prepare = slf_prepare_transfer; |
|
|
1755 | frame->check = slf_check_nop; |
|
|
1756 | frame->data = (void *)arg; /* let's hope it will stay valid */ |
|
|
1757 | } |
|
|
1758 | |
|
|
1759 | static void |
|
|
1760 | slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1761 | { |
|
|
1762 | frame->prepare = prepare_schedule; |
|
|
1763 | frame->check = slf_check_nop; |
|
|
1764 | } |
|
|
1765 | |
|
|
1766 | static void |
|
|
1767 | slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1768 | { |
|
|
1769 | frame->prepare = prepare_cede; |
|
|
1770 | frame->check = slf_check_nop; |
|
|
1771 | } |
|
|
1772 | |
|
|
1773 | static void |
|
|
1774 | slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1775 | { |
|
|
1776 | frame->prepare = prepare_cede_notself; |
|
|
1777 | frame->check = slf_check_nop; |
|
|
1778 | } |
|
|
1779 | |
|
|
1780 | /* |
|
|
1781 | * these not obviously related functions are all rolled into one |
|
|
1782 | * function to increase chances that they all will call transfer with the same |
|
|
1783 | * stack offset |
|
|
1784 | * SLF stands for "schedule-like-function". |
|
|
1785 | */ |
|
|
1786 | static OP * |
|
|
1787 | pp_slf (pTHX) |
|
|
1788 | { |
|
|
1789 | I32 checkmark; /* mark SP to see how many elements check has pushed */ |
|
|
1790 | |
|
|
1791 | /* set up the slf frame, unless it has already been set-up */ |
|
|
1792 | /* the latter happens when a new coro has been started */ |
|
|
1793 | /* or when a new cctx was attached to an existing coroutine */ |
|
|
1794 | if (expect_true (!slf_frame.prepare)) |
|
|
1795 | { |
|
|
1796 | /* first iteration */ |
|
|
1797 | dSP; |
|
|
1798 | SV **arg = PL_stack_base + TOPMARK + 1; |
|
|
1799 | int items = SP - arg; /* args without function object */ |
|
|
1800 | SV *gv = *sp; |
|
|
1801 | |
|
|
1802 | /* do a quick consistency check on the "function" object, and if it isn't */ |
|
|
1803 | /* for us, divert to the real entersub */ |
|
|
1804 | if (SvTYPE (gv) != SVt_PVGV |
|
|
1805 | || !GvCV (gv) |
|
|
1806 | || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
|
|
1807 | return PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1808 | |
|
|
1809 | if (!(PL_op->op_flags & OPf_STACKED)) |
|
|
1810 | { |
|
|
1811 | /* ampersand-form of call, use @_ instead of stack */ |
|
|
1812 | AV *av = GvAV (PL_defgv); |
|
|
1813 | arg = AvARRAY (av); |
|
|
1814 | items = AvFILLp (av) + 1; |
|
|
1815 | } |
|
|
1816 | |
|
|
1817 | /* now call the init function, which needs to set up slf_frame */ |
|
|
1818 | ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
|
|
1819 | (aTHX_ &slf_frame, GvCV (gv), arg, items); |
|
|
1820 | |
|
|
1821 | /* pop args */ |
|
|
1822 | SP = PL_stack_base + POPMARK; |
|
|
1823 | |
|
|
1824 | PUTBACK; |
|
|
1825 | } |
|
|
1826 | |
|
|
1827 | /* now that we have a slf_frame, interpret it! */ |
|
|
1828 | /* we use a callback system not to make the code needlessly */ |
|
|
1829 | /* complicated, but so we can run multiple perl coros from one cctx */ |
|
|
1830 | |
|
|
1831 | do |
|
|
1832 | { |
|
|
1833 | struct coro_transfer_args ta; |
|
|
1834 | |
|
|
1835 | slf_frame.prepare (aTHX_ &ta); |
|
|
1836 | TRANSFER (ta, 0); |
|
|
1837 | |
|
|
1838 | checkmark = PL_stack_sp - PL_stack_base; |
|
|
1839 | } |
|
|
1840 | while (slf_frame.check (aTHX_ &slf_frame)); |
|
|
1841 | |
|
|
1842 | slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ |
|
|
1843 | |
|
|
1844 | /* exception handling */ |
|
|
1845 | if (expect_false (CORO_THROW)) |
|
|
1846 | { |
|
|
1847 | SV *exception = sv_2mortal (CORO_THROW); |
|
|
1848 | |
|
|
1849 | CORO_THROW = 0; |
|
|
1850 | sv_setsv (ERRSV, exception); |
|
|
1851 | croak (0); |
|
|
1852 | } |
|
|
1853 | |
|
|
1854 | /* return value handling - mostly like entersub */ |
|
|
1855 | /* make sure we put something on the stack in scalar context */ |
|
|
1856 | if (GIMME_V == G_SCALAR) |
|
|
1857 | { |
|
|
1858 | dSP; |
|
|
1859 | SV **bot = PL_stack_base + checkmark; |
|
|
1860 | |
|
|
1861 | if (sp == bot) /* too few, push undef */ |
|
|
1862 | bot [1] = &PL_sv_undef; |
|
|
1863 | else if (sp != bot + 1) /* too many, take last one */ |
|
|
1864 | bot [1] = *sp; |
|
|
1865 | |
|
|
1866 | SP = bot + 1; |
|
|
1867 | |
|
|
1868 | PUTBACK; |
|
|
1869 | } |
|
|
1870 | |
|
|
1871 | return NORMAL; |
|
|
1872 | } |
|
|
1873 | |
|
|
1874 | static void |
|
|
1875 | api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax) |
|
|
1876 | { |
|
|
1877 | int i; |
|
|
1878 | SV **arg = PL_stack_base + ax; |
|
|
1879 | int items = PL_stack_sp - arg + 1; |
|
|
1880 | |
|
|
1881 | assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
|
|
1882 | |
|
|
1883 | if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
|
|
1884 | && PL_op->op_ppaddr != pp_slf) |
|
|
1885 | croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
|
|
1886 | |
|
|
1887 | CvFLAGS (cv) |= CVf_SLF; |
|
|
1888 | CvXSUBANY (cv).any_ptr = (void *)init_cb; |
|
|
1889 | slf_cv = cv; |
|
|
1890 | |
|
|
1891 | /* we patch the op, and then re-run the whole call */ |
|
|
1892 | /* we have to put the same argument on the stack for this to work */ |
|
|
1893 | /* and this will be done by pp_restore */ |
|
|
1894 | slf_restore.op_next = (OP *)&slf_restore; |
|
|
1895 | slf_restore.op_type = OP_CUSTOM; |
|
|
1896 | slf_restore.op_ppaddr = pp_restore; |
|
|
1897 | slf_restore.op_first = PL_op; |
|
|
1898 | |
|
|
1899 | slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */ |
|
|
1900 | |
|
|
1901 | if (PL_op->op_flags & OPf_STACKED) |
|
|
1902 | { |
|
|
1903 | if (items > slf_arga) |
|
|
1904 | { |
|
|
1905 | slf_arga = items; |
|
|
1906 | free (slf_argv); |
|
|
1907 | slf_argv = malloc (slf_arga * sizeof (SV *)); |
|
|
1908 | } |
|
|
1909 | |
|
|
1910 | slf_argc = items; |
|
|
1911 | |
|
|
1912 | for (i = 0; i < items; ++i) |
|
|
1913 | slf_argv [i] = SvREFCNT_inc (arg [i]); |
|
|
1914 | } |
|
|
1915 | else |
|
|
1916 | slf_argc = 0; |
|
|
1917 | |
|
|
1918 | PL_op->op_ppaddr = pp_slf; |
|
|
1919 | PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ |
|
|
1920 | |
|
|
1921 | PL_op = (OP *)&slf_restore; |
1702 | } |
1922 | } |
1703 | |
1923 | |
1704 | /*****************************************************************************/ |
1924 | /*****************************************************************************/ |
1705 | /* PerlIO::cede */ |
1925 | /* PerlIO::cede */ |
1706 | |
1926 | |
… | |
… | |
1775 | PerlIOBuf_get_cnt, |
1995 | PerlIOBuf_get_cnt, |
1776 | PerlIOBuf_set_ptrcnt, |
1996 | PerlIOBuf_set_ptrcnt, |
1777 | }; |
1997 | }; |
1778 | |
1998 | |
1779 | /*****************************************************************************/ |
1999 | /*****************************************************************************/ |
1780 | |
2000 | /* Coro::Semaphore */ |
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 (items > slf_arga) |
|
|
1988 | { |
|
|
1989 | slf_arga = items; |
|
|
1990 | free (slf_argv); |
|
|
1991 | slf_argv = malloc (slf_arga * sizeof (SV *)); |
|
|
1992 | } |
|
|
1993 | |
|
|
1994 | slf_argc = items; |
|
|
1995 | |
|
|
1996 | for (i = 0; i < items; ++i) |
|
|
1997 | slf_argv [i] = SvREFCNT_inc (arg [i]); |
|
|
1998 | |
|
|
1999 | PL_op->op_ppaddr = pp_slf; |
|
|
2000 | PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ |
|
|
2001 | |
|
|
2002 | PL_op = (OP *)&slf_restore; |
|
|
2003 | } |
|
|
2004 | |
|
|
2005 | /*****************************************************************************/ |
|
|
2006 | |
2001 | |
2007 | static void |
2002 | static void |
2008 | coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
2003 | coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
2009 | { |
2004 | { |
2010 | SV *count_sv = AvARRAY (av)[0]; |
2005 | SV *count_sv = AvARRAY (av)[0]; |
… | |
… | |
2045 | slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
2040 | slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
2046 | { |
2041 | { |
2047 | AV *av = (AV *)frame->data; |
2042 | AV *av = (AV *)frame->data; |
2048 | SV *count_sv = AvARRAY (av)[0]; |
2043 | SV *count_sv = AvARRAY (av)[0]; |
2049 | |
2044 | |
|
|
2045 | /* if we are about to throw, don't actually acquire the lock, just throw */ |
|
|
2046 | if (CORO_THROW) |
|
|
2047 | return 0; |
2050 | if (SvIVX (count_sv) > 0) |
2048 | else if (SvIVX (count_sv) > 0) |
2051 | { |
2049 | { |
2052 | SvSTATE_current->on_destroy = 0; |
2050 | SvSTATE_current->on_destroy = 0; |
2053 | SvIVX (count_sv) = SvIVX (count_sv) - 1; |
2051 | SvIVX (count_sv) = SvIVX (count_sv) - 1; |
2054 | return 0; |
2052 | return 0; |
2055 | } |
2053 | } |
… | |
… | |
2076 | |
2074 | |
2077 | if (SvIVX (AvARRAY (av)[0]) > 0) |
2075 | if (SvIVX (AvARRAY (av)[0]) > 0) |
2078 | { |
2076 | { |
2079 | frame->data = (void *)av; |
2077 | frame->data = (void *)av; |
2080 | frame->prepare = prepare_nop; |
2078 | frame->prepare = prepare_nop; |
2081 | SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
|
|
2082 | } |
2079 | } |
2083 | else |
2080 | else |
2084 | { |
2081 | { |
2085 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
2082 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
2086 | |
2083 | |
2087 | frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
2084 | frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
2088 | frame->prepare = prepare_schedule; |
2085 | frame->prepare = prepare_schedule; |
2089 | |
2086 | |
2090 | /* to avoid race conditions when a woken-up coro gets terminated */ |
2087 | /* to avoid race conditions when a woken-up coro gets terminated */ |
2091 | /* we arrange for a temporary on_destroy that calls adjust (0) */ |
2088 | /* we arrange for a temporary on_destroy that calls adjust (0) */ |
2092 | assert (!SvSTATE_current->on_destroy);//D |
|
|
2093 | SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
2089 | SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
2094 | } |
2090 | } |
2095 | |
2091 | |
2096 | frame->check = slf_check_semaphore_down; |
2092 | frame->check = slf_check_semaphore_down; |
2097 | |
2093 | |
2098 | } |
2094 | } |
2099 | |
2095 | |
2100 | /*****************************************************************************/ |
2096 | /*****************************************************************************/ |
|
|
2097 | /* gensub: simple closure generation utility */ |
2101 | |
2098 | |
2102 | #define GENSUB_ARG CvXSUBANY (cv).any_ptr |
2099 | #define GENSUB_ARG CvXSUBANY (cv).any_ptr |
2103 | |
2100 | |
2104 | /* create a closure from XS, returns a code reference */ |
2101 | /* create a closure from XS, returns a code reference */ |
2105 | /* the arg can be accessed via GENSUB_ARG from the callback */ |
2102 | /* the arg can be accessed via GENSUB_ARG from the callback */ |
2106 | /* the callback must use dXSARGS/XSRETURN */ |
2103 | /* the callback must use dXSARGS/XSRETURN */ |
2107 | static SV * |
2104 | static SV * |
2108 | gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
2105 | gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
2109 | { |
2106 | { |
2110 | CV *cv = (CV *)NEWSV (0, 0); |
2107 | CV *cv = (CV *)newSV (0); |
2111 | |
2108 | |
2112 | sv_upgrade ((SV *)cv, SVt_PVCV); |
2109 | sv_upgrade ((SV *)cv, SVt_PVCV); |
2113 | |
2110 | |
2114 | CvANON_on (cv); |
2111 | CvANON_on (cv); |
2115 | CvISXSUB_on (cv); |
2112 | CvISXSUB_on (cv); |
2116 | CvXSUB (cv) = xsub; |
2113 | CvXSUB (cv) = xsub; |
2117 | GENSUB_ARG = arg; |
2114 | GENSUB_ARG = arg; |
2118 | |
2115 | |
2119 | return newRV_noinc ((SV *)cv); |
2116 | return newRV_noinc ((SV *)cv); |
|
|
2117 | } |
|
|
2118 | |
|
|
2119 | /*****************************************************************************/ |
|
|
2120 | /* Coro::AIO */ |
|
|
2121 | |
|
|
2122 | #define CORO_MAGIC_type_aio PERL_MAGIC_ext |
|
|
2123 | |
|
|
2124 | /* helper storage struct */ |
|
|
2125 | struct io_state |
|
|
2126 | { |
|
|
2127 | int errorno; |
|
|
2128 | I32 laststype; /* U16 in 5.10.0 */ |
|
|
2129 | int laststatval; |
|
|
2130 | Stat_t statcache; |
|
|
2131 | }; |
|
|
2132 | |
|
|
2133 | static void |
|
|
2134 | coro_aio_callback (pTHX_ CV *cv) |
|
|
2135 | { |
|
|
2136 | dXSARGS; |
|
|
2137 | AV *state = (AV *)GENSUB_ARG; |
|
|
2138 | SV *coro = av_pop (state); |
|
|
2139 | SV *data_sv = newSV (sizeof (struct io_state)); |
|
|
2140 | |
|
|
2141 | av_extend (state, items); |
|
|
2142 | |
|
|
2143 | sv_upgrade (data_sv, SVt_PV); |
|
|
2144 | SvCUR_set (data_sv, sizeof (struct io_state)); |
|
|
2145 | SvPOK_only (data_sv); |
|
|
2146 | |
|
|
2147 | { |
|
|
2148 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2149 | |
|
|
2150 | data->errorno = errno; |
|
|
2151 | data->laststype = PL_laststype; |
|
|
2152 | data->laststatval = PL_laststatval; |
|
|
2153 | data->statcache = PL_statcache; |
|
|
2154 | } |
|
|
2155 | |
|
|
2156 | /* now build the result vector out of all the parameters and the data_sv */ |
|
|
2157 | { |
|
|
2158 | int i; |
|
|
2159 | |
|
|
2160 | for (i = 0; i < items; ++i) |
|
|
2161 | av_push (state, SvREFCNT_inc_NN (ST (i))); |
|
|
2162 | } |
|
|
2163 | |
|
|
2164 | av_push (state, data_sv); |
|
|
2165 | |
|
|
2166 | api_ready (aTHX_ coro); |
|
|
2167 | SvREFCNT_dec (coro); |
|
|
2168 | SvREFCNT_dec ((AV *)state); |
|
|
2169 | } |
|
|
2170 | |
|
|
2171 | static int |
|
|
2172 | slf_check_aio_req (pTHX_ struct CoroSLF *frame) |
|
|
2173 | { |
|
|
2174 | AV *state = (AV *)frame->data; |
|
|
2175 | |
|
|
2176 | /* if we are about to throw, return early */ |
|
|
2177 | /* this does not cancel the aio request, but at least */ |
|
|
2178 | /* it quickly returns */ |
|
|
2179 | if (CORO_THROW) |
|
|
2180 | return 0; |
|
|
2181 | |
|
|
2182 | /* one element that is an RV? repeat! */ |
|
|
2183 | if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) |
|
|
2184 | return 1; |
|
|
2185 | |
|
|
2186 | /* restore status */ |
|
|
2187 | { |
|
|
2188 | SV *data_sv = av_pop (state); |
|
|
2189 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2190 | |
|
|
2191 | errno = data->errorno; |
|
|
2192 | PL_laststype = data->laststype; |
|
|
2193 | PL_laststatval = data->laststatval; |
|
|
2194 | PL_statcache = data->statcache; |
|
|
2195 | |
|
|
2196 | SvREFCNT_dec (data_sv); |
|
|
2197 | } |
|
|
2198 | |
|
|
2199 | /* push result values */ |
|
|
2200 | { |
|
|
2201 | dSP; |
|
|
2202 | int i; |
|
|
2203 | |
|
|
2204 | EXTEND (SP, AvFILLp (state) + 1); |
|
|
2205 | for (i = 0; i <= AvFILLp (state); ++i) |
|
|
2206 | PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i]))); |
|
|
2207 | |
|
|
2208 | PUTBACK; |
|
|
2209 | } |
|
|
2210 | |
|
|
2211 | return 0; |
|
|
2212 | } |
|
|
2213 | |
|
|
2214 | static void |
|
|
2215 | slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2216 | { |
|
|
2217 | AV *state = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
2218 | SV *coro_hv = SvRV (coro_current); |
|
|
2219 | struct coro *coro = SvSTATE_hv (coro_hv); |
|
|
2220 | |
|
|
2221 | /* put our coroutine id on the state arg */ |
|
|
2222 | av_push (state, SvREFCNT_inc_NN (coro_hv)); |
|
|
2223 | |
|
|
2224 | /* first see whether we have a non-zero priority and set it as AIO prio */ |
|
|
2225 | if (coro->prio) |
|
|
2226 | { |
|
|
2227 | dSP; |
|
|
2228 | |
|
|
2229 | static SV *prio_cv; |
|
|
2230 | static SV *prio_sv; |
|
|
2231 | |
|
|
2232 | if (expect_false (!prio_cv)) |
|
|
2233 | { |
|
|
2234 | prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); |
|
|
2235 | prio_sv = newSViv (0); |
|
|
2236 | } |
|
|
2237 | |
|
|
2238 | PUSHMARK (SP); |
|
|
2239 | sv_setiv (prio_sv, coro->prio); |
|
|
2240 | XPUSHs (prio_sv); |
|
|
2241 | |
|
|
2242 | PUTBACK; |
|
|
2243 | call_sv (prio_cv, G_VOID | G_DISCARD); |
|
|
2244 | } |
|
|
2245 | |
|
|
2246 | /* now call the original request */ |
|
|
2247 | { |
|
|
2248 | dSP; |
|
|
2249 | CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj; |
|
|
2250 | int i; |
|
|
2251 | |
|
|
2252 | PUSHMARK (SP); |
|
|
2253 | |
|
|
2254 | /* first push all args to the stack */ |
|
|
2255 | EXTEND (SP, items + 1); |
|
|
2256 | |
|
|
2257 | for (i = 0; i < items; ++i) |
|
|
2258 | PUSHs (arg [i]); |
|
|
2259 | |
|
|
2260 | /* now push the callback closure */ |
|
|
2261 | PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); |
|
|
2262 | |
|
|
2263 | /* now call the AIO function - we assume our request is uncancelable */ |
|
|
2264 | PUTBACK; |
|
|
2265 | call_sv ((SV *)req, G_VOID | G_DISCARD); |
|
|
2266 | } |
|
|
2267 | |
|
|
2268 | /* now that the requets is going, we loop toll we have a result */ |
|
|
2269 | frame->data = (void *)state; |
|
|
2270 | frame->prepare = prepare_schedule; |
|
|
2271 | frame->check = slf_check_aio_req; |
|
|
2272 | } |
|
|
2273 | |
|
|
2274 | static void |
|
|
2275 | coro_aio_req_xs (pTHX_ CV *cv) |
|
|
2276 | { |
|
|
2277 | dXSARGS; |
|
|
2278 | |
|
|
2279 | CORO_EXECUTE_SLF_XS (slf_init_aio_req); |
|
|
2280 | |
|
|
2281 | XSRETURN_EMPTY; |
2120 | } |
2282 | } |
2121 | |
2283 | |
2122 | /*****************************************************************************/ |
2284 | /*****************************************************************************/ |
2123 | |
2285 | |
2124 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
2286 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
… | |
… | |
2220 | for (i = 1; i < items; i++) |
2382 | for (i = 1; i < items; i++) |
2221 | av_push (coro->args, newSVsv (ST (i))); |
2383 | av_push (coro->args, newSVsv (ST (i))); |
2222 | } |
2384 | } |
2223 | OUTPUT: |
2385 | OUTPUT: |
2224 | RETVAL |
2386 | RETVAL |
2225 | |
|
|
2226 | void |
|
|
2227 | _set_stacklevel (...) |
|
|
2228 | CODE: |
|
|
2229 | CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel); |
|
|
2230 | |
2387 | |
2231 | void |
2388 | void |
2232 | transfer (...) |
2389 | transfer (...) |
2233 | PROTOTYPE: $$ |
2390 | PROTOTYPE: $$ |
2234 | CODE: |
2391 | CODE: |
… | |
… | |
2360 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
2517 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
2361 | PROTOTYPE: $;$ |
2518 | PROTOTYPE: $;$ |
2362 | CODE: |
2519 | CODE: |
2363 | { |
2520 | { |
2364 | struct coro *current = SvSTATE_current; |
2521 | struct coro *current = SvSTATE_current; |
2365 | SV **throwp = self == current ? &coro_throw : &self->throw; |
2522 | SV **throwp = self == current ? &CORO_THROW : &self->except; |
2366 | SvREFCNT_dec (*throwp); |
2523 | SvREFCNT_dec (*throwp); |
2367 | *throwp = SvOK (throw) ? newSVsv (throw) : 0; |
2524 | *throwp = SvOK (throw) ? newSVsv (throw) : 0; |
2368 | } |
2525 | } |
2369 | |
2526 | |
2370 | void |
2527 | void |
… | |
… | |
2422 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
2579 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
2423 | |
2580 | |
2424 | SV *tmp = *src; *src = *dst; *dst = tmp; |
2581 | SV *tmp = *src; *src = *dst; *dst = tmp; |
2425 | } |
2582 | } |
2426 | |
2583 | |
|
|
2584 | |
2427 | MODULE = Coro::State PACKAGE = Coro |
2585 | MODULE = Coro::State PACKAGE = Coro |
2428 | |
2586 | |
2429 | BOOT: |
2587 | BOOT: |
2430 | { |
2588 | { |
2431 | int i; |
2589 | int i; |
… | |
… | |
2458 | coroapi.ready = api_ready; |
2616 | coroapi.ready = api_ready; |
2459 | coroapi.is_ready = api_is_ready; |
2617 | coroapi.is_ready = api_is_ready; |
2460 | coroapi.nready = coro_nready; |
2618 | coroapi.nready = coro_nready; |
2461 | coroapi.current = coro_current; |
2619 | coroapi.current = coro_current; |
2462 | |
2620 | |
2463 | GCoroAPI = &coroapi; |
2621 | /*GCoroAPI = &coroapi;*/ |
2464 | sv_setiv (sv, (IV)&coroapi); |
2622 | sv_setiv (sv, (IV)&coroapi); |
2465 | SvREADONLY_on (sv); |
2623 | SvREADONLY_on (sv); |
2466 | } |
2624 | } |
2467 | } |
2625 | } |
2468 | |
2626 | |
… | |
… | |
2605 | |
2763 | |
2606 | av_push (av_async_pool, newSVsv (coro_current)); |
2764 | av_push (av_async_pool, newSVsv (coro_current)); |
2607 | } |
2765 | } |
2608 | |
2766 | |
2609 | |
2767 | |
2610 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
2611 | |
|
|
2612 | void |
|
|
2613 | _get_state (SV *self) |
|
|
2614 | PROTOTYPE: $ |
|
|
2615 | PPCODE: |
|
|
2616 | { |
|
|
2617 | AV *defav = GvAV (PL_defgv); |
|
|
2618 | AV *av = newAV (); |
|
|
2619 | int i; |
|
|
2620 | SV *data_sv = newSV (sizeof (struct io_state)); |
|
|
2621 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2622 | SvCUR_set (data_sv, sizeof (struct io_state)); |
|
|
2623 | SvPOK_only (data_sv); |
|
|
2624 | |
|
|
2625 | data->errorno = errno; |
|
|
2626 | data->laststype = PL_laststype; |
|
|
2627 | data->laststatval = PL_laststatval; |
|
|
2628 | data->statcache = PL_statcache; |
|
|
2629 | |
|
|
2630 | av_extend (av, AvFILLp (defav) + 1 + 1); |
|
|
2631 | |
|
|
2632 | for (i = 0; i <= AvFILLp (defav); ++i) |
|
|
2633 | av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); |
|
|
2634 | |
|
|
2635 | av_push (av, data_sv); |
|
|
2636 | |
|
|
2637 | XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
2638 | |
|
|
2639 | api_ready (aTHX_ self); |
|
|
2640 | } |
|
|
2641 | |
|
|
2642 | void |
|
|
2643 | _set_state (SV *state) |
|
|
2644 | PROTOTYPE: $ |
|
|
2645 | PPCODE: |
|
|
2646 | { |
|
|
2647 | AV *av = (AV *)SvRV (state); |
|
|
2648 | struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); |
|
|
2649 | int i; |
|
|
2650 | |
|
|
2651 | errno = data->errorno; |
|
|
2652 | PL_laststype = data->laststype; |
|
|
2653 | PL_laststatval = data->laststatval; |
|
|
2654 | PL_statcache = data->statcache; |
|
|
2655 | |
|
|
2656 | EXTEND (SP, AvFILLp (av)); |
|
|
2657 | for (i = 0; i < AvFILLp (av); ++i) |
|
|
2658 | PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); |
|
|
2659 | } |
|
|
2660 | |
|
|
2661 | |
|
|
2662 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
|
|
2663 | |
|
|
2664 | BOOT: |
|
|
2665 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
|
|
2666 | |
|
|
2667 | void |
|
|
2668 | _schedule (...) |
|
|
2669 | CODE: |
|
|
2670 | { |
|
|
2671 | static int incede; |
|
|
2672 | |
|
|
2673 | api_cede_notself (aTHX); |
|
|
2674 | |
|
|
2675 | ++incede; |
|
|
2676 | while (coro_nready >= incede && api_cede (aTHX)) |
|
|
2677 | ; |
|
|
2678 | |
|
|
2679 | sv_setsv (sv_activity, &PL_sv_undef); |
|
|
2680 | if (coro_nready >= incede) |
|
|
2681 | { |
|
|
2682 | PUSHMARK (SP); |
|
|
2683 | PUTBACK; |
|
|
2684 | call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); |
|
|
2685 | SPAGAIN; |
|
|
2686 | } |
|
|
2687 | |
|
|
2688 | --incede; |
|
|
2689 | } |
|
|
2690 | |
|
|
2691 | |
|
|
2692 | MODULE = Coro::State PACKAGE = PerlIO::cede |
2768 | MODULE = Coro::State PACKAGE = PerlIO::cede |
2693 | |
2769 | |
2694 | BOOT: |
2770 | BOOT: |
2695 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
2771 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
|
|
2772 | |
2696 | |
2773 | |
2697 | MODULE = Coro::State PACKAGE = Coro::Semaphore |
2774 | MODULE = Coro::State PACKAGE = Coro::Semaphore |
2698 | |
2775 | |
2699 | SV * |
2776 | SV * |
2700 | new (SV *klass, SV *count_ = 0) |
2777 | new (SV *klass, SV *count_ = 0) |
2701 | CODE: |
2778 | CODE: |
2702 | { |
2779 | { |
2703 | /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
2780 | /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
2704 | AV *av = newAV (); |
2781 | AV *av = newAV (); |
|
|
2782 | SV **ary; |
|
|
2783 | |
|
|
2784 | /* unfortunately, building manually saves memory */ |
|
|
2785 | Newx (ary, 2, SV *); |
|
|
2786 | AvALLOC (av) = ary; |
|
|
2787 | AvARRAY (av) = ary; |
|
|
2788 | AvMAX (av) = 1; |
|
|
2789 | AvFILLp (av) = 0; |
2705 | av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); |
2790 | ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1); |
|
|
2791 | |
2706 | RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); |
2792 | RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); |
2707 | } |
2793 | } |
2708 | OUTPUT: |
2794 | OUTPUT: |
2709 | RETVAL |
2795 | RETVAL |
2710 | |
2796 | |
… | |
… | |
2756 | else |
2842 | else |
2757 | { |
2843 | { |
2758 | int i; |
2844 | int i; |
2759 | EXTEND (SP, AvFILLp (av) + 1 - 1); |
2845 | EXTEND (SP, AvFILLp (av) + 1 - 1); |
2760 | for (i = 1; i <= AvFILLp (av); ++i) |
2846 | for (i = 1; i <= AvFILLp (av); ++i) |
2761 | PUSHs (newSVsv (AvARRAY (av)[i])); |
2847 | PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); |
2762 | } |
2848 | } |
2763 | } |
2849 | } |
2764 | |
2850 | |
|
|
2851 | |
|
|
2852 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
|
|
2853 | |
|
|
2854 | BOOT: |
|
|
2855 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
|
|
2856 | |
|
|
2857 | void |
|
|
2858 | _schedule (...) |
|
|
2859 | CODE: |
|
|
2860 | { |
|
|
2861 | static int incede; |
|
|
2862 | |
|
|
2863 | api_cede_notself (aTHX); |
|
|
2864 | |
|
|
2865 | ++incede; |
|
|
2866 | while (coro_nready >= incede && api_cede (aTHX)) |
|
|
2867 | ; |
|
|
2868 | |
|
|
2869 | sv_setsv (sv_activity, &PL_sv_undef); |
|
|
2870 | if (coro_nready >= incede) |
|
|
2871 | { |
|
|
2872 | PUSHMARK (SP); |
|
|
2873 | PUTBACK; |
|
|
2874 | call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
2875 | } |
|
|
2876 | |
|
|
2877 | --incede; |
|
|
2878 | } |
|
|
2879 | |
|
|
2880 | |
|
|
2881 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
2882 | |
|
|
2883 | void |
|
|
2884 | _register (char *target, char *proto, SV *req) |
|
|
2885 | CODE: |
|
|
2886 | { |
|
|
2887 | HV *st; |
|
|
2888 | GV *gvp; |
|
|
2889 | CV *req_cv = sv_2cv (req, &st, &gvp, 0); |
|
|
2890 | /* newXSproto doesn't return the CV on 5.8 */ |
|
|
2891 | CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); |
|
|
2892 | sv_setpv ((SV *)slf_cv, proto); |
|
|
2893 | sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); |
|
|
2894 | } |
|
|
2895 | |