… | |
… | |
16 | |
16 | |
17 | #ifdef WIN32 |
17 | #ifdef WIN32 |
18 | # undef setjmp |
18 | # undef setjmp |
19 | # undef longjmp |
19 | # undef longjmp |
20 | # undef _exit |
20 | # undef _exit |
21 | # define setjmp _setjmp // deep magic, don't ask |
21 | # define setjmp _setjmp /* deep magic */ |
22 | #else |
22 | #else |
23 | # include <inttypes.h> /* most portable stdint.h */ |
23 | # include <inttypes.h> /* most portable stdint.h */ |
24 | #endif |
24 | #endif |
25 | |
25 | |
26 | #ifdef HAVE_MMAP |
26 | #ifdef HAVE_MMAP |
… | |
… | |
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 */ |
… | |
… | |
241 | /* this is a structure representing a perl-level coroutine */ |
241 | /* this is a structure representing a perl-level coroutine */ |
242 | struct coro { |
242 | struct coro { |
243 | /* the C coroutine allocated to this perl coroutine, if any */ |
243 | /* the C coroutine allocated to this perl coroutine, if any */ |
244 | coro_cctx *cctx; |
244 | coro_cctx *cctx; |
245 | |
245 | |
246 | /* process data */ |
246 | /* state data */ |
247 | struct CoroSLF slf_frame; /* saved slf frame */ |
247 | struct CoroSLF slf_frame; /* saved slf frame */ |
248 | AV *mainstack; |
248 | AV *mainstack; |
249 | perl_slots *slot; /* basically the saved sp */ |
249 | perl_slots *slot; /* basically the saved sp */ |
250 | |
250 | |
251 | AV *args; /* data associated with this coroutine (initial args) */ |
251 | AV *args; /* data associated with this coroutine (initial args) */ |
… | |
… | |
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 | SV *rouse_cb; |
263 | |
264 | |
264 | /* async_pool */ |
265 | /* async_pool */ |
265 | SV *saved_deffh; |
266 | SV *saved_deffh; |
266 | |
267 | |
267 | /* linked list */ |
268 | /* linked list */ |
… | |
… | |
269 | }; |
270 | }; |
270 | |
271 | |
271 | typedef struct coro *Coro__State; |
272 | typedef struct coro *Coro__State; |
272 | typedef struct coro *Coro__State_or_hashref; |
273 | typedef struct coro *Coro__State_or_hashref; |
273 | |
274 | |
|
|
275 | /* the following variables are effectively part of the perl context */ |
|
|
276 | /* and get copied between struct coro and these variables */ |
|
|
277 | /* the mainr easonw e don't support windows process emulation */ |
274 | static struct CoroSLF slf_frame; /* the current slf frame */ |
278 | static struct CoroSLF slf_frame; /* the current slf frame */ |
275 | |
279 | |
276 | /** Coro ********************************************************************/ |
280 | /** Coro ********************************************************************/ |
277 | |
281 | |
278 | #define PRIO_MAX 3 |
282 | #define PRIO_MAX 3 |
… | |
… | |
380 | SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
384 | SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
381 | |
385 | |
382 | return 0; |
386 | return 0; |
383 | } |
387 | } |
384 | |
388 | |
385 | #define CORO_MAGIC_type_cv PERL_MAGIC_ext |
389 | #define CORO_MAGIC_type_cv 26 |
386 | #define CORO_MAGIC_type_state PERL_MAGIC_ext |
390 | #define CORO_MAGIC_type_state PERL_MAGIC_ext |
387 | |
391 | |
388 | static MGVTBL coro_cv_vtbl = { |
392 | static MGVTBL coro_cv_vtbl = { |
389 | 0, 0, 0, 0, |
393 | 0, 0, 0, 0, |
390 | coro_cv_free |
394 | coro_cv_free |
391 | }; |
395 | }; |
392 | |
396 | |
|
|
397 | #define CORO_MAGIC_NN(sv, type) \ |
|
|
398 | (expect_true (SvMAGIC (sv)->mg_type == type) \ |
|
|
399 | ? SvMAGIC (sv) \ |
|
|
400 | : mg_find (sv, type)) |
|
|
401 | |
393 | #define CORO_MAGIC(sv, type) \ |
402 | #define CORO_MAGIC(sv, type) \ |
394 | expect_true (SvMAGIC (sv)) \ |
403 | (expect_true (SvMAGIC (sv)) \ |
395 | ? expect_true (SvMAGIC (sv)->mg_type == type) \ |
404 | ? CORO_MAGIC_NN (sv, type) \ |
396 | ? SvMAGIC (sv) \ |
|
|
397 | : mg_find (sv, type) \ |
|
|
398 | : 0 |
405 | : 0) |
399 | |
406 | |
400 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
407 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
401 | #define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) |
408 | #define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) |
402 | |
409 | |
403 | INLINE struct coro * |
410 | INLINE struct coro * |
404 | SvSTATE_ (pTHX_ SV *coro) |
411 | SvSTATE_ (pTHX_ SV *coro) |
405 | { |
412 | { |
406 | HV *stash; |
413 | HV *stash; |
… | |
… | |
424 | return (struct coro *)mg->mg_ptr; |
431 | return (struct coro *)mg->mg_ptr; |
425 | } |
432 | } |
426 | |
433 | |
427 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
434 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
428 | |
435 | |
429 | /* fastert than SvSTATE, but expects a coroutine hv */ |
436 | /* faster than SvSTATE, but expects a coroutine hv */ |
430 | INLINE struct coro * |
437 | #define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr) |
431 | SvSTATE_hv (SV *sv) |
|
|
432 | { |
|
|
433 | MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state) |
|
|
434 | ? SvMAGIC (sv) |
|
|
435 | : mg_find (sv, CORO_MAGIC_type_state); |
|
|
436 | |
|
|
437 | return (struct coro *)mg->mg_ptr; |
|
|
438 | } |
|
|
439 | |
|
|
440 | #define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
438 | #define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
441 | |
439 | |
442 | /* the next two functions merely cache the padlists */ |
440 | /* the next two functions merely cache the padlists */ |
443 | static void |
441 | static void |
444 | get_padlist (pTHX_ CV *cv) |
442 | get_padlist (pTHX_ CV *cv) |
… | |
… | |
451 | else |
449 | else |
452 | { |
450 | { |
453 | #if CORO_PREFER_PERL_FUNCTIONS |
451 | #if CORO_PREFER_PERL_FUNCTIONS |
454 | /* this is probably cleaner? but also slower! */ |
452 | /* this is probably cleaner? but also slower! */ |
455 | /* in practise, it seems to be less stable */ |
453 | /* in practise, it seems to be less stable */ |
456 | CV *cp = Perl_cv_clone (cv); |
454 | CV *cp = Perl_cv_clone (aTHX_ cv); |
457 | CvPADLIST (cv) = CvPADLIST (cp); |
455 | CvPADLIST (cv) = CvPADLIST (cp); |
458 | CvPADLIST (cp) = 0; |
456 | CvPADLIST (cp) = 0; |
459 | SvREFCNT_dec (cp); |
457 | SvREFCNT_dec (cp); |
460 | #else |
458 | #else |
461 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
459 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
… | |
… | |
513 | } |
511 | } |
514 | |
512 | |
515 | PUTBACK; |
513 | PUTBACK; |
516 | } |
514 | } |
517 | |
515 | |
518 | slf_frame = c->slf_frame; |
516 | slf_frame = c->slf_frame; |
|
|
517 | CORO_THROW = c->except; |
519 | } |
518 | } |
520 | |
519 | |
521 | static void |
520 | static void |
522 | save_perl (pTHX_ Coro__State c) |
521 | save_perl (pTHX_ Coro__State c) |
523 | { |
522 | { |
|
|
523 | c->except = CORO_THROW; |
524 | c->slf_frame = slf_frame; |
524 | c->slf_frame = slf_frame; |
525 | |
525 | |
526 | { |
526 | { |
527 | dSP; |
527 | dSP; |
528 | I32 cxix = cxstack_ix; |
528 | I32 cxix = cxstack_ix; |
… | |
… | |
603 | * of perl.c:init_stacks, except that it uses less memory |
603 | * of perl.c:init_stacks, except that it uses less memory |
604 | * on the (sometimes correct) assumption that coroutines do |
604 | * on the (sometimes correct) assumption that coroutines do |
605 | * not usually need a lot of stackspace. |
605 | * not usually need a lot of stackspace. |
606 | */ |
606 | */ |
607 | #if CORO_PREFER_PERL_FUNCTIONS |
607 | #if CORO_PREFER_PERL_FUNCTIONS |
608 | # define coro_init_stacks init_stacks |
608 | # define coro_init_stacks(thx) init_stacks () |
609 | #else |
609 | #else |
610 | static void |
610 | static void |
611 | coro_init_stacks (pTHX) |
611 | coro_init_stacks (pTHX) |
612 | { |
612 | { |
613 | PL_curstackinfo = new_stackinfo(32, 8); |
613 | PL_curstackinfo = new_stackinfo(32, 8); |
… | |
… | |
821 | slf_check_nop (pTHX_ struct CoroSLF *frame) |
821 | slf_check_nop (pTHX_ struct CoroSLF *frame) |
822 | { |
822 | { |
823 | return 0; |
823 | return 0; |
824 | } |
824 | } |
825 | |
825 | |
826 | static void |
826 | static UNOP coro_setup_op; |
|
|
827 | |
|
|
828 | static void NOINLINE /* noinline to keep it out of the transfer fast path */ |
827 | coro_setup (pTHX_ struct coro *coro) |
829 | coro_setup (pTHX_ struct coro *coro) |
828 | { |
830 | { |
829 | /* |
831 | /* |
830 | * emulate part of the perl startup here. |
832 | * emulate part of the perl startup here. |
831 | */ |
833 | */ |
… | |
… | |
858 | { |
860 | { |
859 | dSP; |
861 | dSP; |
860 | UNOP myop; |
862 | UNOP myop; |
861 | |
863 | |
862 | Zero (&myop, 1, UNOP); |
864 | Zero (&myop, 1, UNOP); |
863 | myop.op_next = Nullop; |
865 | myop.op_next = Nullop; |
864 | myop.op_flags = OPf_WANT_VOID; |
866 | myop.op_flags = OPf_WANT_VOID; |
865 | |
867 | |
866 | PUSHMARK (SP); |
868 | PUSHMARK (SP); |
867 | XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
869 | XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
868 | PUTBACK; |
870 | PUTBACK; |
… | |
… | |
874 | /* this newly created coroutine might be run on an existing cctx which most |
876 | /* this newly created coroutine might be run on an existing cctx which most |
875 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
877 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
876 | */ |
878 | */ |
877 | slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
879 | slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
878 | slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
880 | slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
|
|
881 | |
|
|
882 | /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ |
|
|
883 | coro_setup_op.op_next = PL_op; |
|
|
884 | coro_setup_op.op_type = OP_CUSTOM; |
|
|
885 | coro_setup_op.op_ppaddr = pp_slf; |
|
|
886 | /* no flags required, as an init function won't be called */ |
|
|
887 | |
|
|
888 | PL_op = (OP *)&coro_setup_op; |
|
|
889 | |
|
|
890 | /* copy throw, in case it was set before coro_setup */ |
|
|
891 | CORO_THROW = coro->except; |
879 | } |
892 | } |
880 | |
893 | |
881 | static void |
894 | static void |
882 | coro_destruct (pTHX_ struct coro *coro) |
895 | coro_destruct (pTHX_ struct coro *coro) |
883 | { |
896 | { |
… | |
… | |
906 | SvREFCNT_dec (GvSV (irsgv)); |
919 | SvREFCNT_dec (GvSV (irsgv)); |
907 | |
920 | |
908 | SvREFCNT_dec (PL_diehook); |
921 | SvREFCNT_dec (PL_diehook); |
909 | SvREFCNT_dec (PL_warnhook); |
922 | SvREFCNT_dec (PL_warnhook); |
910 | |
923 | |
|
|
924 | SvREFCNT_dec (CORO_THROW); |
911 | SvREFCNT_dec (coro->saved_deffh); |
925 | SvREFCNT_dec (coro->saved_deffh); |
912 | SvREFCNT_dec (coro->throw); |
926 | SvREFCNT_dec (coro->rouse_cb); |
913 | |
927 | |
914 | coro_destruct_stacks (aTHX); |
928 | coro_destruct_stacks (aTHX); |
915 | } |
929 | } |
916 | |
930 | |
917 | INLINE void |
931 | INLINE void |
… | |
… | |
1046 | |
1060 | |
1047 | TAINT_NOT; |
1061 | TAINT_NOT; |
1048 | return 0; |
1062 | return 0; |
1049 | } |
1063 | } |
1050 | |
1064 | |
|
|
1065 | static struct coro_cctx *cctx_ssl_cctx; |
|
|
1066 | static struct CoroSLF cctx_ssl_frame; |
|
|
1067 | |
1051 | static void |
1068 | static void |
1052 | prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) |
1069 | slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
1053 | { |
1070 | { |
1054 | ta->prev = (struct coro *)cctx; |
1071 | ta->prev = (struct coro *)cctx_ssl_cctx; |
1055 | ta->next = 0; |
1072 | ta->next = 0; |
1056 | } |
1073 | } |
1057 | |
1074 | |
1058 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
1075 | static int |
1059 | /* _cctx_init should be careful, as it could be called at almost any time */ |
1076 | slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) |
1060 | /* during execution of a perl program */ |
1077 | { |
1061 | /* also initialises PL_top_env */ |
1078 | *frame = cctx_ssl_frame; |
|
|
1079 | |
|
|
1080 | return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ |
|
|
1081 | } |
|
|
1082 | |
|
|
1083 | /* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ |
1062 | static void NOINLINE |
1084 | static void NOINLINE |
1063 | cctx_prepare (pTHX_ coro_cctx *cctx) |
1085 | cctx_prepare (pTHX_ coro_cctx *cctx) |
1064 | { |
1086 | { |
1065 | dSP; |
|
|
1066 | UNOP myop; |
|
|
1067 | |
|
|
1068 | PL_top_env = &PL_start_env; |
1087 | PL_top_env = &PL_start_env; |
1069 | |
1088 | |
1070 | if (cctx->flags & CC_TRACE) |
1089 | if (cctx->flags & CC_TRACE) |
1071 | PL_runops = runops_trace; |
1090 | PL_runops = runops_trace; |
1072 | |
1091 | |
1073 | Zero (&myop, 1, UNOP); |
1092 | /* we already must be executing an SLF op, there is no other valid way |
1074 | myop.op_next = PL_op; |
1093 | * that can lead to creation of a new cctx */ |
1075 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
1094 | assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", |
|
|
1095 | slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); |
1076 | |
1096 | |
1077 | PUSHMARK (SP); |
1097 | /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ |
1078 | EXTEND (SP, 2); |
1098 | cctx_ssl_cctx = cctx; |
1079 | PUSHs (sv_2mortal (newSViv ((IV)cctx))); |
1099 | cctx_ssl_frame = slf_frame; |
1080 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
1100 | |
1081 | PUTBACK; |
1101 | slf_frame.prepare = slf_prepare_set_stacklevel; |
1082 | PL_op = (OP *)&myop; |
1102 | slf_frame.check = slf_check_set_stacklevel; |
1083 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1084 | SPAGAIN; |
|
|
1085 | } |
1103 | } |
1086 | |
1104 | |
1087 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
1105 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
1088 | INLINE void |
1106 | INLINE void |
1089 | transfer_tail (pTHX) |
1107 | transfer_tail (pTHX) |
… | |
… | |
1276 | /** coroutine switching *****************************************************/ |
1294 | /** coroutine switching *****************************************************/ |
1277 | |
1295 | |
1278 | static void |
1296 | static void |
1279 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
1297 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
1280 | { |
1298 | { |
|
|
1299 | /* TODO: throwing up here is considered harmful */ |
|
|
1300 | |
1281 | if (expect_true (prev != next)) |
1301 | if (expect_true (prev != next)) |
1282 | { |
1302 | { |
1283 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
1303 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
1284 | croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); |
1304 | croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); |
1285 | |
1305 | |
… | |
… | |
1295 | #endif |
1315 | #endif |
1296 | } |
1316 | } |
1297 | } |
1317 | } |
1298 | |
1318 | |
1299 | /* always use the TRANSFER macro */ |
1319 | /* always use the TRANSFER macro */ |
1300 | static void NOINLINE |
1320 | static void NOINLINE /* noinline so we have a fixed stackframe */ |
1301 | transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
1321 | transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
1302 | { |
1322 | { |
1303 | dSTACKLEVEL; |
1323 | dSTACKLEVEL; |
1304 | |
1324 | |
1305 | /* sometimes transfer is only called to set idle_sp */ |
1325 | /* sometimes transfer is only called to set idle_sp */ |
1306 | if (expect_false (!next)) |
1326 | if (expect_false (!next)) |
1307 | { |
1327 | { |
1308 | ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; |
1328 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
1309 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1329 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1310 | } |
1330 | } |
1311 | else if (expect_true (prev != next)) |
1331 | else if (expect_true (prev != next)) |
1312 | { |
1332 | { |
1313 | coro_cctx *prev__cctx; |
1333 | coro_cctx *prev__cctx; |
… | |
… | |
1338 | |
1358 | |
1339 | prev__cctx = prev->cctx; |
1359 | prev__cctx = prev->cctx; |
1340 | |
1360 | |
1341 | /* possibly untie and reuse the cctx */ |
1361 | /* possibly untie and reuse the cctx */ |
1342 | if (expect_true ( |
1362 | if (expect_true ( |
1343 | prev__cctx->idle_sp == (void *)stacklevel |
1363 | prev__cctx->idle_sp == STACKLEVEL |
1344 | && !(prev__cctx->flags & CC_TRACE) |
1364 | && !(prev__cctx->flags & CC_TRACE) |
1345 | && !force_cctx |
1365 | && !force_cctx |
1346 | )) |
1366 | )) |
1347 | { |
1367 | { |
1348 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
1368 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
… | |
… | |
1479 | |
1499 | |
1480 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1500 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1481 | TRANSFER (ta, 1); |
1501 | TRANSFER (ta, 1); |
1482 | } |
1502 | } |
1483 | |
1503 | |
|
|
1504 | /*****************************************************************************/ |
|
|
1505 | /* gensub: simple closure generation utility */ |
|
|
1506 | |
|
|
1507 | #define GENSUB_ARG CvXSUBANY (cv).any_ptr |
|
|
1508 | |
|
|
1509 | /* create a closure from XS, returns a code reference */ |
|
|
1510 | /* the arg can be accessed via GENSUB_ARG from the callback */ |
|
|
1511 | /* the callback must use dXSARGS/XSRETURN */ |
|
|
1512 | static SV * |
|
|
1513 | gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
|
|
1514 | { |
|
|
1515 | CV *cv = (CV *)newSV (0); |
|
|
1516 | |
|
|
1517 | sv_upgrade ((SV *)cv, SVt_PVCV); |
|
|
1518 | |
|
|
1519 | CvANON_on (cv); |
|
|
1520 | CvISXSUB_on (cv); |
|
|
1521 | CvXSUB (cv) = xsub; |
|
|
1522 | GENSUB_ARG = arg; |
|
|
1523 | |
|
|
1524 | return newRV_noinc ((SV *)cv); |
|
|
1525 | } |
|
|
1526 | |
1484 | /** Coro ********************************************************************/ |
1527 | /** Coro ********************************************************************/ |
1485 | |
1528 | |
1486 | INLINE void |
1529 | INLINE void |
1487 | coro_enq (pTHX_ struct coro *coro) |
1530 | coro_enq (pTHX_ struct coro *coro) |
1488 | { |
1531 | { |
… | |
… | |
1531 | ENTER; |
1574 | ENTER; |
1532 | SAVETMPS; |
1575 | SAVETMPS; |
1533 | |
1576 | |
1534 | PUSHMARK (SP); |
1577 | PUSHMARK (SP); |
1535 | PUTBACK; |
1578 | PUTBACK; |
1536 | call_sv (sv_hook, G_DISCARD); |
1579 | call_sv (sv_hook, G_VOID | G_DISCARD); |
1537 | SPAGAIN; |
|
|
1538 | |
1580 | |
1539 | FREETMPS; |
1581 | FREETMPS; |
1540 | LEAVE; |
1582 | LEAVE; |
1541 | } |
1583 | } |
1542 | |
1584 | |
… | |
… | |
1569 | ENTER; |
1611 | ENTER; |
1570 | SAVETMPS; |
1612 | SAVETMPS; |
1571 | |
1613 | |
1572 | PUSHMARK (SP); |
1614 | PUSHMARK (SP); |
1573 | PUTBACK; |
1615 | PUTBACK; |
1574 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
1616 | call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD); |
1575 | SPAGAIN; |
|
|
1576 | |
1617 | |
1577 | FREETMPS; |
1618 | FREETMPS; |
1578 | LEAVE; |
1619 | LEAVE; |
1579 | continue; |
1620 | continue; |
1580 | } |
1621 | } |
… | |
… | |
1687 | if (coro->flags & CF_RUNNING) |
1728 | if (coro->flags & CF_RUNNING) |
1688 | PL_runops = RUNOPS_DEFAULT; |
1729 | PL_runops = RUNOPS_DEFAULT; |
1689 | else |
1730 | else |
1690 | coro->slot->runops = RUNOPS_DEFAULT; |
1731 | coro->slot->runops = RUNOPS_DEFAULT; |
1691 | } |
1732 | } |
|
|
1733 | } |
|
|
1734 | |
|
|
1735 | /*****************************************************************************/ |
|
|
1736 | /* rouse callback */ |
|
|
1737 | |
|
|
1738 | #define CORO_MAGIC_type_rouse PERL_MAGIC_ext |
|
|
1739 | |
|
|
1740 | static void |
|
|
1741 | coro_rouse_callback (pTHX_ CV *cv) |
|
|
1742 | { |
|
|
1743 | dXSARGS; |
|
|
1744 | SV *data = (SV *)GENSUB_ARG; |
|
|
1745 | |
|
|
1746 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
1747 | { |
|
|
1748 | /* first call, set args */ |
|
|
1749 | int i; |
|
|
1750 | AV *av = newAV (); |
|
|
1751 | SV *coro = SvRV (data); |
|
|
1752 | |
|
|
1753 | SvRV_set (data, (SV *)av); |
|
|
1754 | api_ready (aTHX_ coro); |
|
|
1755 | SvREFCNT_dec (coro); |
|
|
1756 | |
|
|
1757 | /* better take a full copy of the arguments */ |
|
|
1758 | while (items--) |
|
|
1759 | av_store (av, items, newSVsv (ST (items))); |
|
|
1760 | } |
|
|
1761 | |
|
|
1762 | XSRETURN_EMPTY; |
|
|
1763 | } |
|
|
1764 | |
|
|
1765 | static int |
|
|
1766 | slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) |
|
|
1767 | { |
|
|
1768 | SV *data = (SV *)frame->data; |
|
|
1769 | |
|
|
1770 | if (CORO_THROW) |
|
|
1771 | return 0; |
|
|
1772 | |
|
|
1773 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
1774 | return 1; |
|
|
1775 | |
|
|
1776 | /* now push all results on the stack */ |
|
|
1777 | { |
|
|
1778 | dSP; |
|
|
1779 | AV *av = (AV *)SvRV (data); |
|
|
1780 | int i; |
|
|
1781 | |
|
|
1782 | EXTEND (SP, AvFILLp (av) + 1); |
|
|
1783 | for (i = 0; i <= AvFILLp (av); ++i) |
|
|
1784 | PUSHs (sv_2mortal (AvARRAY (av)[i])); |
|
|
1785 | |
|
|
1786 | /* we have stolen the elements, so ste length to zero and free */ |
|
|
1787 | AvFILLp (av) = -1; |
|
|
1788 | av_undef (av); |
|
|
1789 | |
|
|
1790 | PUTBACK; |
|
|
1791 | } |
|
|
1792 | |
|
|
1793 | return 0; |
|
|
1794 | } |
|
|
1795 | |
|
|
1796 | static void |
|
|
1797 | slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1798 | { |
|
|
1799 | SV *cb; |
|
|
1800 | |
|
|
1801 | if (items) |
|
|
1802 | cb = arg [0]; |
|
|
1803 | else |
|
|
1804 | { |
|
|
1805 | struct coro *coro = SvSTATE_current; |
|
|
1806 | |
|
|
1807 | if (!coro->rouse_cb) |
|
|
1808 | croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,"); |
|
|
1809 | |
|
|
1810 | cb = sv_2mortal (coro->rouse_cb); |
|
|
1811 | coro->rouse_cb = 0; |
|
|
1812 | } |
|
|
1813 | |
|
|
1814 | if (!SvROK (cb) |
|
|
1815 | || SvTYPE (SvRV (cb)) != SVt_PVCV |
|
|
1816 | || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) |
|
|
1817 | croak ("Coro::rouse_wait called with illegal callback argument,"); |
|
|
1818 | |
|
|
1819 | { |
|
|
1820 | CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ |
|
|
1821 | SV *data = (SV *)GENSUB_ARG; |
|
|
1822 | |
|
|
1823 | frame->data = (void *)data; |
|
|
1824 | frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; |
|
|
1825 | frame->check = slf_check_rouse_wait; |
|
|
1826 | } |
|
|
1827 | } |
|
|
1828 | |
|
|
1829 | static SV * |
|
|
1830 | coro_new_rouse_cb (pTHX) |
|
|
1831 | { |
|
|
1832 | HV *hv = (HV *)SvRV (coro_current); |
|
|
1833 | struct coro *coro = SvSTATE_hv (hv); |
|
|
1834 | SV *data = newRV_inc ((SV *)hv); |
|
|
1835 | SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); |
|
|
1836 | |
|
|
1837 | sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); |
|
|
1838 | SvREFCNT_dec (data); /* magicext increases the refcount */ |
|
|
1839 | |
|
|
1840 | SvREFCNT_dec (coro->rouse_cb); |
|
|
1841 | coro->rouse_cb = SvREFCNT_inc_NN (cb); |
|
|
1842 | |
|
|
1843 | return cb; |
|
|
1844 | } |
|
|
1845 | |
|
|
1846 | /*****************************************************************************/ |
|
|
1847 | /* schedule-like-function opcode (SLF) */ |
|
|
1848 | |
|
|
1849 | static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
|
|
1850 | static const CV *slf_cv; |
|
|
1851 | static SV **slf_argv; |
|
|
1852 | static int slf_argc, slf_arga; /* count, allocated */ |
|
|
1853 | static I32 slf_ax; /* top of stack, for restore */ |
|
|
1854 | |
|
|
1855 | /* this restores the stack in the case we patched the entersub, to */ |
|
|
1856 | /* recreate the stack frame as perl will on following calls */ |
|
|
1857 | /* since entersub cleared the stack */ |
|
|
1858 | static OP * |
|
|
1859 | pp_restore (pTHX) |
|
|
1860 | { |
|
|
1861 | int i; |
|
|
1862 | SV **SP = PL_stack_base + slf_ax; |
|
|
1863 | |
|
|
1864 | PUSHMARK (SP); |
|
|
1865 | |
|
|
1866 | EXTEND (SP, slf_argc + 1); |
|
|
1867 | |
|
|
1868 | for (i = 0; i < slf_argc; ++i) |
|
|
1869 | PUSHs (sv_2mortal (slf_argv [i])); |
|
|
1870 | |
|
|
1871 | PUSHs ((SV *)CvGV (slf_cv)); |
|
|
1872 | |
|
|
1873 | RETURNOP (slf_restore.op_first); |
|
|
1874 | } |
|
|
1875 | |
|
|
1876 | static void |
|
|
1877 | slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
|
|
1878 | { |
|
|
1879 | SV **arg = (SV **)slf_frame.data; |
|
|
1880 | |
|
|
1881 | prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
|
|
1882 | } |
|
|
1883 | |
|
|
1884 | static void |
|
|
1885 | slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1886 | { |
|
|
1887 | if (items != 2) |
|
|
1888 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
|
|
1889 | |
|
|
1890 | frame->prepare = slf_prepare_transfer; |
|
|
1891 | frame->check = slf_check_nop; |
|
|
1892 | frame->data = (void *)arg; /* let's hope it will stay valid */ |
|
|
1893 | } |
|
|
1894 | |
|
|
1895 | static void |
|
|
1896 | slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1897 | { |
|
|
1898 | frame->prepare = prepare_schedule; |
|
|
1899 | frame->check = slf_check_nop; |
|
|
1900 | } |
|
|
1901 | |
|
|
1902 | static void |
|
|
1903 | slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1904 | { |
|
|
1905 | frame->prepare = prepare_cede; |
|
|
1906 | frame->check = slf_check_nop; |
|
|
1907 | } |
|
|
1908 | |
|
|
1909 | static void |
|
|
1910 | slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1911 | { |
|
|
1912 | frame->prepare = prepare_cede_notself; |
|
|
1913 | frame->check = slf_check_nop; |
|
|
1914 | } |
|
|
1915 | |
|
|
1916 | /* |
|
|
1917 | * these not obviously related functions are all rolled into one |
|
|
1918 | * function to increase chances that they all will call transfer with the same |
|
|
1919 | * stack offset |
|
|
1920 | * SLF stands for "schedule-like-function". |
|
|
1921 | */ |
|
|
1922 | static OP * |
|
|
1923 | pp_slf (pTHX) |
|
|
1924 | { |
|
|
1925 | I32 checkmark; /* mark SP to see how many elements check has pushed */ |
|
|
1926 | |
|
|
1927 | /* set up the slf frame, unless it has already been set-up */ |
|
|
1928 | /* the latter happens when a new coro has been started */ |
|
|
1929 | /* or when a new cctx was attached to an existing coroutine */ |
|
|
1930 | if (expect_true (!slf_frame.prepare)) |
|
|
1931 | { |
|
|
1932 | /* first iteration */ |
|
|
1933 | dSP; |
|
|
1934 | SV **arg = PL_stack_base + TOPMARK + 1; |
|
|
1935 | int items = SP - arg; /* args without function object */ |
|
|
1936 | SV *gv = *sp; |
|
|
1937 | |
|
|
1938 | /* do a quick consistency check on the "function" object, and if it isn't */ |
|
|
1939 | /* for us, divert to the real entersub */ |
|
|
1940 | if (SvTYPE (gv) != SVt_PVGV |
|
|
1941 | || !GvCV (gv) |
|
|
1942 | || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
|
|
1943 | return PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1944 | |
|
|
1945 | if (!(PL_op->op_flags & OPf_STACKED)) |
|
|
1946 | { |
|
|
1947 | /* ampersand-form of call, use @_ instead of stack */ |
|
|
1948 | AV *av = GvAV (PL_defgv); |
|
|
1949 | arg = AvARRAY (av); |
|
|
1950 | items = AvFILLp (av) + 1; |
|
|
1951 | } |
|
|
1952 | |
|
|
1953 | /* now call the init function, which needs to set up slf_frame */ |
|
|
1954 | ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
|
|
1955 | (aTHX_ &slf_frame, GvCV (gv), arg, items); |
|
|
1956 | |
|
|
1957 | /* pop args */ |
|
|
1958 | SP = PL_stack_base + POPMARK; |
|
|
1959 | |
|
|
1960 | PUTBACK; |
|
|
1961 | } |
|
|
1962 | |
|
|
1963 | /* now that we have a slf_frame, interpret it! */ |
|
|
1964 | /* we use a callback system not to make the code needlessly */ |
|
|
1965 | /* complicated, but so we can run multiple perl coros from one cctx */ |
|
|
1966 | |
|
|
1967 | do |
|
|
1968 | { |
|
|
1969 | struct coro_transfer_args ta; |
|
|
1970 | |
|
|
1971 | slf_frame.prepare (aTHX_ &ta); |
|
|
1972 | TRANSFER (ta, 0); |
|
|
1973 | |
|
|
1974 | checkmark = PL_stack_sp - PL_stack_base; |
|
|
1975 | } |
|
|
1976 | while (slf_frame.check (aTHX_ &slf_frame)); |
|
|
1977 | |
|
|
1978 | slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ |
|
|
1979 | |
|
|
1980 | /* exception handling */ |
|
|
1981 | if (expect_false (CORO_THROW)) |
|
|
1982 | { |
|
|
1983 | SV *exception = sv_2mortal (CORO_THROW); |
|
|
1984 | |
|
|
1985 | CORO_THROW = 0; |
|
|
1986 | sv_setsv (ERRSV, exception); |
|
|
1987 | croak (0); |
|
|
1988 | } |
|
|
1989 | |
|
|
1990 | /* return value handling - mostly like entersub */ |
|
|
1991 | /* make sure we put something on the stack in scalar context */ |
|
|
1992 | if (GIMME_V == G_SCALAR) |
|
|
1993 | { |
|
|
1994 | dSP; |
|
|
1995 | SV **bot = PL_stack_base + checkmark; |
|
|
1996 | |
|
|
1997 | if (sp == bot) /* too few, push undef */ |
|
|
1998 | bot [1] = &PL_sv_undef; |
|
|
1999 | else if (sp != bot + 1) /* too many, take last one */ |
|
|
2000 | bot [1] = *sp; |
|
|
2001 | |
|
|
2002 | SP = bot + 1; |
|
|
2003 | |
|
|
2004 | PUTBACK; |
|
|
2005 | } |
|
|
2006 | |
|
|
2007 | return NORMAL; |
|
|
2008 | } |
|
|
2009 | |
|
|
2010 | static void |
|
|
2011 | api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax) |
|
|
2012 | { |
|
|
2013 | int i; |
|
|
2014 | SV **arg = PL_stack_base + ax; |
|
|
2015 | int items = PL_stack_sp - arg + 1; |
|
|
2016 | |
|
|
2017 | assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
|
|
2018 | |
|
|
2019 | if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
|
|
2020 | && PL_op->op_ppaddr != pp_slf) |
|
|
2021 | croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
|
|
2022 | |
|
|
2023 | CvFLAGS (cv) |= CVf_SLF; |
|
|
2024 | CvXSUBANY (cv).any_ptr = (void *)init_cb; |
|
|
2025 | slf_cv = cv; |
|
|
2026 | |
|
|
2027 | /* we patch the op, and then re-run the whole call */ |
|
|
2028 | /* we have to put the same argument on the stack for this to work */ |
|
|
2029 | /* and this will be done by pp_restore */ |
|
|
2030 | slf_restore.op_next = (OP *)&slf_restore; |
|
|
2031 | slf_restore.op_type = OP_CUSTOM; |
|
|
2032 | slf_restore.op_ppaddr = pp_restore; |
|
|
2033 | slf_restore.op_first = PL_op; |
|
|
2034 | |
|
|
2035 | slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */ |
|
|
2036 | |
|
|
2037 | if (PL_op->op_flags & OPf_STACKED) |
|
|
2038 | { |
|
|
2039 | if (items > slf_arga) |
|
|
2040 | { |
|
|
2041 | slf_arga = items; |
|
|
2042 | free (slf_argv); |
|
|
2043 | slf_argv = malloc (slf_arga * sizeof (SV *)); |
|
|
2044 | } |
|
|
2045 | |
|
|
2046 | slf_argc = items; |
|
|
2047 | |
|
|
2048 | for (i = 0; i < items; ++i) |
|
|
2049 | slf_argv [i] = SvREFCNT_inc (arg [i]); |
|
|
2050 | } |
|
|
2051 | else |
|
|
2052 | slf_argc = 0; |
|
|
2053 | |
|
|
2054 | PL_op->op_ppaddr = pp_slf; |
|
|
2055 | PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ |
|
|
2056 | |
|
|
2057 | PL_op = (OP *)&slf_restore; |
1692 | } |
2058 | } |
1693 | |
2059 | |
1694 | /*****************************************************************************/ |
2060 | /*****************************************************************************/ |
1695 | /* PerlIO::cede */ |
2061 | /* PerlIO::cede */ |
1696 | |
2062 | |
… | |
… | |
1765 | PerlIOBuf_get_cnt, |
2131 | PerlIOBuf_get_cnt, |
1766 | PerlIOBuf_set_ptrcnt, |
2132 | PerlIOBuf_set_ptrcnt, |
1767 | }; |
2133 | }; |
1768 | |
2134 | |
1769 | /*****************************************************************************/ |
2135 | /*****************************************************************************/ |
|
|
2136 | /* Coro::Semaphore & Coro::Signal */ |
1770 | |
2137 | |
1771 | static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
|
|
1772 | static const CV *slf_cv; |
|
|
1773 | static SV *slf_arg0; |
|
|
1774 | static SV *slf_arg1; |
|
|
1775 | static SV *slf_arg2; |
|
|
1776 | static I32 slf_ax; /* top of stack, for restore */ |
|
|
1777 | |
|
|
1778 | /* this restores the stack in the case we patched the entersub, to */ |
|
|
1779 | /* recreate the stack frame as perl will on following calls */ |
|
|
1780 | /* since entersub cleared the stack */ |
|
|
1781 | static OP * |
2138 | static SV * |
1782 | pp_restore (pTHX) |
2139 | coro_waitarray_new (pTHX_ int count) |
1783 | { |
2140 | { |
1784 | SV **SP = PL_stack_base + slf_ax; |
2141 | /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
|
|
2142 | AV *av = newAV (); |
|
|
2143 | SV **ary; |
1785 | |
2144 | |
1786 | PUSHMARK (SP); |
2145 | /* unfortunately, building manually saves memory */ |
|
|
2146 | Newx (ary, 2, SV *); |
|
|
2147 | AvALLOC (av) = ary; |
|
|
2148 | /*AvARRAY (av) = ary;*/ |
|
|
2149 | SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ |
|
|
2150 | AvMAX (av) = 1; |
|
|
2151 | AvFILLp (av) = 0; |
|
|
2152 | ary [0] = newSViv (count); |
1787 | |
2153 | |
1788 | EXTEND (SP, 3); |
2154 | return newRV_noinc ((SV *)av); |
1789 | if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); |
|
|
1790 | if (slf_arg1) PUSHs (sv_2mortal (slf_arg1)); |
|
|
1791 | if (slf_arg2) PUSHs (sv_2mortal (slf_arg2)); |
|
|
1792 | PUSHs ((SV *)CvGV (slf_cv)); |
|
|
1793 | |
|
|
1794 | RETURNOP (slf_restore.op_first); |
|
|
1795 | } |
2155 | } |
1796 | |
2156 | |
1797 | static void |
2157 | /* semaphore */ |
1798 | slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
|
|
1799 | { |
|
|
1800 | prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data); |
|
|
1801 | } |
|
|
1802 | |
|
|
1803 | static void |
|
|
1804 | slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1805 | { |
|
|
1806 | assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); |
|
|
1807 | |
|
|
1808 | frame->prepare = slf_prepare_set_stacklevel; |
|
|
1809 | frame->check = slf_check_nop; |
|
|
1810 | frame->data = (void *)SvIV (arg [0]); |
|
|
1811 | } |
|
|
1812 | |
|
|
1813 | static void |
|
|
1814 | slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
|
|
1815 | { |
|
|
1816 | SV **arg = (SV **)slf_frame.data; |
|
|
1817 | |
|
|
1818 | prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
|
|
1819 | |
|
|
1820 | /* if the destination has ->throw set, then copy it */ |
|
|
1821 | /* into the current coro's throw slot, so it will be raised */ |
|
|
1822 | /* after the schedule */ |
|
|
1823 | if (expect_false (ta->next->throw)) |
|
|
1824 | { |
|
|
1825 | struct coro *coro = SvSTATE_current; |
|
|
1826 | SvREFCNT_dec (coro->throw); |
|
|
1827 | coro->throw = ta->next->throw; |
|
|
1828 | ta->next->throw = 0; |
|
|
1829 | } |
|
|
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 | { |
|
|
1928 | dSP; |
|
|
1929 | SV **bot = PL_stack_base + checkmark; |
|
|
1930 | int gimme = GIMME_V; |
|
|
1931 | |
|
|
1932 | slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */ |
|
|
1933 | |
|
|
1934 | /* make sure we put something on the stack in scalar context */ |
|
|
1935 | if (gimme == G_SCALAR) |
|
|
1936 | { |
|
|
1937 | if (sp == bot) |
|
|
1938 | XPUSHs (&PL_sv_undef); |
|
|
1939 | |
|
|
1940 | SP = bot + 1; |
|
|
1941 | } |
|
|
1942 | |
|
|
1943 | PUTBACK; |
|
|
1944 | } |
|
|
1945 | |
|
|
1946 | { |
|
|
1947 | struct coro *coro = SvSTATE_current; |
|
|
1948 | |
|
|
1949 | if (expect_false (coro->throw)) |
|
|
1950 | { |
|
|
1951 | SV *exception = sv_2mortal (coro->throw); |
|
|
1952 | |
|
|
1953 | coro->throw = 0; |
|
|
1954 | sv_setsv (ERRSV, exception); |
|
|
1955 | croak (0); |
|
|
1956 | } |
|
|
1957 | } |
|
|
1958 | |
|
|
1959 | return NORMAL; |
|
|
1960 | } |
|
|
1961 | |
|
|
1962 | static void |
|
|
1963 | api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax) |
|
|
1964 | { |
|
|
1965 | SV **arg = PL_stack_base + ax; |
|
|
1966 | int items = PL_stack_sp - arg + 1; |
|
|
1967 | |
|
|
1968 | assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
|
|
1969 | |
|
|
1970 | if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
|
|
1971 | && PL_op->op_ppaddr != pp_slf) |
|
|
1972 | croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
|
|
1973 | |
|
|
1974 | #if 0 |
|
|
1975 | if (items > 3) |
|
|
1976 | croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items); |
|
|
1977 | #endif |
|
|
1978 | |
|
|
1979 | CvFLAGS (cv) |= CVf_SLF; |
|
|
1980 | CvXSUBANY (cv).any_ptr = (void *)init_cb; |
|
|
1981 | slf_cv = cv; |
|
|
1982 | |
|
|
1983 | /* we patch the op, and then re-run the whole call */ |
|
|
1984 | /* we have to put the same argument on the stack for this to work */ |
|
|
1985 | /* and this will be done by pp_restore */ |
|
|
1986 | slf_restore.op_next = (OP *)&slf_restore; |
|
|
1987 | slf_restore.op_type = OP_CUSTOM; |
|
|
1988 | slf_restore.op_ppaddr = pp_restore; |
|
|
1989 | slf_restore.op_first = PL_op; |
|
|
1990 | |
|
|
1991 | slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */ |
|
|
1992 | slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; |
|
|
1993 | slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; |
|
|
1994 | slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0; |
|
|
1995 | |
|
|
1996 | PL_op->op_ppaddr = pp_slf; |
|
|
1997 | PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ |
|
|
1998 | |
|
|
1999 | PL_op = (OP *)&slf_restore; |
|
|
2000 | } |
|
|
2001 | |
|
|
2002 | /*****************************************************************************/ |
|
|
2003 | |
2158 | |
2004 | static void |
2159 | static void |
2005 | coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
2160 | coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
2006 | { |
2161 | { |
2007 | SV *count_sv = AvARRAY (av)[0]; |
2162 | SV *count_sv = AvARRAY (av)[0]; |
… | |
… | |
2037 | /* call $sem->adjust (0) to possibly wake up some other waiters */ |
2192 | /* call $sem->adjust (0) to possibly wake up some other waiters */ |
2038 | coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); |
2193 | coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); |
2039 | } |
2194 | } |
2040 | |
2195 | |
2041 | static int |
2196 | static int |
2042 | slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
2197 | slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) |
2043 | { |
2198 | { |
2044 | AV *av = (AV *)frame->data; |
2199 | AV *av = (AV *)frame->data; |
2045 | SV *count_sv = AvARRAY (av)[0]; |
2200 | SV *count_sv = AvARRAY (av)[0]; |
2046 | |
2201 | |
|
|
2202 | /* if we are about to throw, don't actually acquire the lock, just throw */ |
|
|
2203 | if (CORO_THROW) |
|
|
2204 | return 0; |
2047 | if (SvIVX (count_sv) > 0) |
2205 | else if (SvIVX (count_sv) > 0) |
2048 | { |
2206 | { |
2049 | SvSTATE_current->on_destroy = 0; |
2207 | SvSTATE_current->on_destroy = 0; |
|
|
2208 | |
|
|
2209 | if (acquire) |
2050 | SvIVX (count_sv) = SvIVX (count_sv) - 1; |
2210 | SvIVX (count_sv) = SvIVX (count_sv) - 1; |
|
|
2211 | else |
|
|
2212 | coro_semaphore_adjust (aTHX_ av, 0); |
|
|
2213 | |
2051 | return 0; |
2214 | return 0; |
2052 | } |
2215 | } |
2053 | else |
2216 | else |
2054 | { |
2217 | { |
2055 | int i; |
2218 | int i; |
… | |
… | |
2064 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
2227 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
2065 | return 1; |
2228 | return 1; |
2066 | } |
2229 | } |
2067 | } |
2230 | } |
2068 | |
2231 | |
2069 | static void |
2232 | static int |
|
|
2233 | slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
|
|
2234 | { |
|
|
2235 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 1); |
|
|
2236 | } |
|
|
2237 | |
|
|
2238 | static int |
|
|
2239 | slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame) |
|
|
2240 | { |
|
|
2241 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 0); |
|
|
2242 | } |
|
|
2243 | |
|
|
2244 | static void |
2070 | slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2245 | slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2071 | { |
2246 | { |
2072 | AV *av = (AV *)SvRV (arg [0]); |
2247 | AV *av = (AV *)SvRV (arg [0]); |
2073 | |
2248 | |
2074 | if (SvIVX (AvARRAY (av)[0]) > 0) |
2249 | if (SvIVX (AvARRAY (av)[0]) > 0) |
2075 | { |
2250 | { |
2076 | frame->data = (void *)av; |
2251 | frame->data = (void *)av; |
2077 | frame->prepare = prepare_nop; |
2252 | frame->prepare = prepare_nop; |
2078 | SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
|
|
2079 | } |
2253 | } |
2080 | else |
2254 | else |
2081 | { |
2255 | { |
2082 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
2256 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
2083 | |
2257 | |
2084 | frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
2258 | frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
2085 | frame->prepare = prepare_schedule; |
2259 | frame->prepare = prepare_schedule; |
2086 | |
2260 | |
2087 | /* to avoid race conditions when a woken-up coro gets terminated */ |
2261 | /* to avoid race conditions when a woken-up coro gets terminated */ |
2088 | /* we arrange for a temporary on_destroy that calls adjust (0) */ |
2262 | /* we arrange for a temporary on_destroy that calls adjust (0) */ |
2089 | assert (!SvSTATE_current->on_destroy);//D |
|
|
2090 | SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
2263 | SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
2091 | } |
2264 | } |
|
|
2265 | } |
2092 | |
2266 | |
|
|
2267 | static void |
|
|
2268 | slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2269 | { |
|
|
2270 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
2093 | frame->check = slf_check_semaphore_down; |
2271 | frame->check = slf_check_semaphore_down; |
|
|
2272 | } |
2094 | |
2273 | |
|
|
2274 | static void |
|
|
2275 | slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2276 | { |
|
|
2277 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
|
|
2278 | frame->check = slf_check_semaphore_wait; |
|
|
2279 | } |
|
|
2280 | |
|
|
2281 | /* signal */ |
|
|
2282 | |
|
|
2283 | static void |
|
|
2284 | coro_signal_wake (pTHX_ AV *av, int count) |
|
|
2285 | { |
|
|
2286 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
2287 | |
|
|
2288 | /* now signal count waiters */ |
|
|
2289 | while (count > 0 && AvFILLp (av) > 0) |
|
|
2290 | { |
|
|
2291 | SV *cb; |
|
|
2292 | |
|
|
2293 | /* swap first two elements so we can shift a waiter */ |
|
|
2294 | cb = AvARRAY (av)[0]; |
|
|
2295 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2296 | AvARRAY (av)[1] = cb; |
|
|
2297 | |
|
|
2298 | cb = av_shift (av); |
|
|
2299 | |
|
|
2300 | api_ready (aTHX_ cb); |
|
|
2301 | sv_setiv (cb, 0); /* signal waiter */ |
|
|
2302 | SvREFCNT_dec (cb); |
|
|
2303 | |
|
|
2304 | --count; |
|
|
2305 | } |
|
|
2306 | } |
|
|
2307 | |
|
|
2308 | static int |
|
|
2309 | slf_check_signal_wait (pTHX_ struct CoroSLF *frame) |
|
|
2310 | { |
|
|
2311 | /* if we are about to throw, also stop waiting */ |
|
|
2312 | return SvROK ((SV *)frame->data) && !CORO_THROW; |
|
|
2313 | } |
|
|
2314 | |
|
|
2315 | static void |
|
|
2316 | slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2317 | { |
|
|
2318 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2319 | |
|
|
2320 | if (SvIVX (AvARRAY (av)[0])) |
|
|
2321 | { |
|
|
2322 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
2323 | frame->prepare = prepare_nop; |
|
|
2324 | frame->check = slf_check_nop; |
|
|
2325 | } |
|
|
2326 | else |
|
|
2327 | { |
|
|
2328 | SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ |
|
|
2329 | |
|
|
2330 | av_push (av, waiter); |
|
|
2331 | |
|
|
2332 | frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ |
|
|
2333 | frame->prepare = prepare_schedule; |
|
|
2334 | frame->check = slf_check_signal_wait; |
|
|
2335 | } |
2095 | } |
2336 | } |
2096 | |
2337 | |
2097 | /*****************************************************************************/ |
2338 | /*****************************************************************************/ |
|
|
2339 | /* Coro::AIO */ |
2098 | |
2340 | |
2099 | #define GENSUB_ARG CvXSUBANY (cv).any_ptr |
2341 | #define CORO_MAGIC_type_aio PERL_MAGIC_ext |
2100 | |
2342 | |
2101 | /* create a closure from XS, returns a code reference */ |
2343 | /* helper storage struct */ |
2102 | /* the arg can be accessed via GENSUB_ARG from the callback */ |
2344 | struct io_state |
2103 | /* the callback must use dXSARGS/XSRETURN */ |
|
|
2104 | static SV * |
|
|
2105 | gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
|
|
2106 | { |
2345 | { |
2107 | CV *cv = (CV *)NEWSV (0, 0); |
2346 | int errorno; |
|
|
2347 | I32 laststype; /* U16 in 5.10.0 */ |
|
|
2348 | int laststatval; |
|
|
2349 | Stat_t statcache; |
|
|
2350 | }; |
2108 | |
2351 | |
|
|
2352 | static void |
|
|
2353 | coro_aio_callback (pTHX_ CV *cv) |
|
|
2354 | { |
|
|
2355 | dXSARGS; |
|
|
2356 | AV *state = (AV *)GENSUB_ARG; |
|
|
2357 | SV *coro = av_pop (state); |
|
|
2358 | SV *data_sv = newSV (sizeof (struct io_state)); |
|
|
2359 | |
|
|
2360 | av_extend (state, items); |
|
|
2361 | |
2109 | sv_upgrade ((SV *)cv, SVt_PVCV); |
2362 | sv_upgrade (data_sv, SVt_PV); |
|
|
2363 | SvCUR_set (data_sv, sizeof (struct io_state)); |
|
|
2364 | SvPOK_only (data_sv); |
2110 | |
2365 | |
2111 | CvANON_on (cv); |
2366 | { |
2112 | CvISXSUB_on (cv); |
2367 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
2113 | CvXSUB (cv) = xsub; |
|
|
2114 | GENSUB_ARG = arg; |
|
|
2115 | |
2368 | |
2116 | return newRV_noinc ((SV *)cv); |
2369 | data->errorno = errno; |
|
|
2370 | data->laststype = PL_laststype; |
|
|
2371 | data->laststatval = PL_laststatval; |
|
|
2372 | data->statcache = PL_statcache; |
|
|
2373 | } |
|
|
2374 | |
|
|
2375 | /* now build the result vector out of all the parameters and the data_sv */ |
|
|
2376 | { |
|
|
2377 | int i; |
|
|
2378 | |
|
|
2379 | for (i = 0; i < items; ++i) |
|
|
2380 | av_push (state, SvREFCNT_inc_NN (ST (i))); |
|
|
2381 | } |
|
|
2382 | |
|
|
2383 | av_push (state, data_sv); |
|
|
2384 | |
|
|
2385 | api_ready (aTHX_ coro); |
|
|
2386 | SvREFCNT_dec (coro); |
|
|
2387 | SvREFCNT_dec ((AV *)state); |
|
|
2388 | } |
|
|
2389 | |
|
|
2390 | static int |
|
|
2391 | slf_check_aio_req (pTHX_ struct CoroSLF *frame) |
|
|
2392 | { |
|
|
2393 | AV *state = (AV *)frame->data; |
|
|
2394 | |
|
|
2395 | /* if we are about to throw, return early */ |
|
|
2396 | /* this does not cancel the aio request, but at least */ |
|
|
2397 | /* it quickly returns */ |
|
|
2398 | if (CORO_THROW) |
|
|
2399 | return 0; |
|
|
2400 | |
|
|
2401 | /* one element that is an RV? repeat! */ |
|
|
2402 | if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) |
|
|
2403 | return 1; |
|
|
2404 | |
|
|
2405 | /* restore status */ |
|
|
2406 | { |
|
|
2407 | SV *data_sv = av_pop (state); |
|
|
2408 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2409 | |
|
|
2410 | errno = data->errorno; |
|
|
2411 | PL_laststype = data->laststype; |
|
|
2412 | PL_laststatval = data->laststatval; |
|
|
2413 | PL_statcache = data->statcache; |
|
|
2414 | |
|
|
2415 | SvREFCNT_dec (data_sv); |
|
|
2416 | } |
|
|
2417 | |
|
|
2418 | /* push result values */ |
|
|
2419 | { |
|
|
2420 | dSP; |
|
|
2421 | int i; |
|
|
2422 | |
|
|
2423 | EXTEND (SP, AvFILLp (state) + 1); |
|
|
2424 | for (i = 0; i <= AvFILLp (state); ++i) |
|
|
2425 | PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i]))); |
|
|
2426 | |
|
|
2427 | PUTBACK; |
|
|
2428 | } |
|
|
2429 | |
|
|
2430 | return 0; |
|
|
2431 | } |
|
|
2432 | |
|
|
2433 | static void |
|
|
2434 | slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2435 | { |
|
|
2436 | AV *state = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
2437 | SV *coro_hv = SvRV (coro_current); |
|
|
2438 | struct coro *coro = SvSTATE_hv (coro_hv); |
|
|
2439 | |
|
|
2440 | /* put our coroutine id on the state arg */ |
|
|
2441 | av_push (state, SvREFCNT_inc_NN (coro_hv)); |
|
|
2442 | |
|
|
2443 | /* first see whether we have a non-zero priority and set it as AIO prio */ |
|
|
2444 | if (coro->prio) |
|
|
2445 | { |
|
|
2446 | dSP; |
|
|
2447 | |
|
|
2448 | static SV *prio_cv; |
|
|
2449 | static SV *prio_sv; |
|
|
2450 | |
|
|
2451 | if (expect_false (!prio_cv)) |
|
|
2452 | { |
|
|
2453 | prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); |
|
|
2454 | prio_sv = newSViv (0); |
|
|
2455 | } |
|
|
2456 | |
|
|
2457 | PUSHMARK (SP); |
|
|
2458 | sv_setiv (prio_sv, coro->prio); |
|
|
2459 | XPUSHs (prio_sv); |
|
|
2460 | |
|
|
2461 | PUTBACK; |
|
|
2462 | call_sv (prio_cv, G_VOID | G_DISCARD); |
|
|
2463 | } |
|
|
2464 | |
|
|
2465 | /* now call the original request */ |
|
|
2466 | { |
|
|
2467 | dSP; |
|
|
2468 | CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj; |
|
|
2469 | int i; |
|
|
2470 | |
|
|
2471 | PUSHMARK (SP); |
|
|
2472 | |
|
|
2473 | /* first push all args to the stack */ |
|
|
2474 | EXTEND (SP, items + 1); |
|
|
2475 | |
|
|
2476 | for (i = 0; i < items; ++i) |
|
|
2477 | PUSHs (arg [i]); |
|
|
2478 | |
|
|
2479 | /* now push the callback closure */ |
|
|
2480 | PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); |
|
|
2481 | |
|
|
2482 | /* now call the AIO function - we assume our request is uncancelable */ |
|
|
2483 | PUTBACK; |
|
|
2484 | call_sv ((SV *)req, G_VOID | G_DISCARD); |
|
|
2485 | } |
|
|
2486 | |
|
|
2487 | /* now that the requets is going, we loop toll we have a result */ |
|
|
2488 | frame->data = (void *)state; |
|
|
2489 | frame->prepare = prepare_schedule; |
|
|
2490 | frame->check = slf_check_aio_req; |
|
|
2491 | } |
|
|
2492 | |
|
|
2493 | static void |
|
|
2494 | coro_aio_req_xs (pTHX_ CV *cv) |
|
|
2495 | { |
|
|
2496 | dXSARGS; |
|
|
2497 | |
|
|
2498 | CORO_EXECUTE_SLF_XS (slf_init_aio_req); |
|
|
2499 | |
|
|
2500 | XSRETURN_EMPTY; |
2117 | } |
2501 | } |
2118 | |
2502 | |
2119 | /*****************************************************************************/ |
2503 | /*****************************************************************************/ |
2120 | |
2504 | |
2121 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
2505 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
… | |
… | |
2217 | for (i = 1; i < items; i++) |
2601 | for (i = 1; i < items; i++) |
2218 | av_push (coro->args, newSVsv (ST (i))); |
2602 | av_push (coro->args, newSVsv (ST (i))); |
2219 | } |
2603 | } |
2220 | OUTPUT: |
2604 | OUTPUT: |
2221 | RETVAL |
2605 | RETVAL |
2222 | |
|
|
2223 | void |
|
|
2224 | _set_stacklevel (...) |
|
|
2225 | CODE: |
|
|
2226 | CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel); |
|
|
2227 | |
2606 | |
2228 | void |
2607 | void |
2229 | transfer (...) |
2608 | transfer (...) |
2230 | PROTOTYPE: $$ |
2609 | PROTOTYPE: $$ |
2231 | CODE: |
2610 | CODE: |
… | |
… | |
2355 | |
2734 | |
2356 | void |
2735 | void |
2357 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
2736 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
2358 | PROTOTYPE: $;$ |
2737 | PROTOTYPE: $;$ |
2359 | CODE: |
2738 | CODE: |
|
|
2739 | { |
|
|
2740 | struct coro *current = SvSTATE_current; |
|
|
2741 | SV **throwp = self == current ? &CORO_THROW : &self->except; |
2360 | SvREFCNT_dec (self->throw); |
2742 | SvREFCNT_dec (*throwp); |
2361 | self->throw = SvOK (throw) ? newSVsv (throw) : 0; |
2743 | *throwp = SvOK (throw) ? newSVsv (throw) : 0; |
|
|
2744 | } |
2362 | |
2745 | |
2363 | void |
2746 | void |
2364 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
2747 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
2365 | PROTOTYPE: $;$ |
2748 | PROTOTYPE: $;$ |
2366 | C_ARGS: aTHX_ coro, flags |
2749 | C_ARGS: aTHX_ coro, flags |
… | |
… | |
2415 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
2798 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
2416 | |
2799 | |
2417 | SV *tmp = *src; *src = *dst; *dst = tmp; |
2800 | SV *tmp = *src; *src = *dst; *dst = tmp; |
2418 | } |
2801 | } |
2419 | |
2802 | |
|
|
2803 | |
2420 | MODULE = Coro::State PACKAGE = Coro |
2804 | MODULE = Coro::State PACKAGE = Coro |
2421 | |
2805 | |
2422 | BOOT: |
2806 | BOOT: |
2423 | { |
2807 | { |
2424 | int i; |
2808 | int i; |
… | |
… | |
2451 | coroapi.ready = api_ready; |
2835 | coroapi.ready = api_ready; |
2452 | coroapi.is_ready = api_is_ready; |
2836 | coroapi.is_ready = api_is_ready; |
2453 | coroapi.nready = coro_nready; |
2837 | coroapi.nready = coro_nready; |
2454 | coroapi.current = coro_current; |
2838 | coroapi.current = coro_current; |
2455 | |
2839 | |
2456 | GCoroAPI = &coroapi; |
2840 | /*GCoroAPI = &coroapi;*/ |
2457 | sv_setiv (sv, (IV)&coroapi); |
2841 | sv_setiv (sv, (IV)&coroapi); |
2458 | SvREADONLY_on (sv); |
2842 | SvREADONLY_on (sv); |
2459 | } |
2843 | } |
2460 | } |
2844 | } |
2461 | |
2845 | |
… | |
… | |
2568 | |
2952 | |
2569 | void |
2953 | void |
2570 | _pool_2 (SV *cb) |
2954 | _pool_2 (SV *cb) |
2571 | CODE: |
2955 | CODE: |
2572 | { |
2956 | { |
2573 | struct coro *coro = SvSTATE_current; |
2957 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2958 | struct coro *coro = SvSTATE_hv ((SV *)hv); |
2574 | |
2959 | |
2575 | sv_setsv (cb, &PL_sv_undef); |
2960 | sv_setsv (cb, &PL_sv_undef); |
2576 | |
2961 | |
2577 | SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
2962 | SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
2578 | coro->saved_deffh = 0; |
2963 | coro->saved_deffh = 0; |
… | |
… | |
2585 | SvREFCNT_dec (old); |
2970 | SvREFCNT_dec (old); |
2586 | croak ("\3async_pool terminate\2\n"); |
2971 | croak ("\3async_pool terminate\2\n"); |
2587 | } |
2972 | } |
2588 | |
2973 | |
2589 | av_clear (GvAV (PL_defgv)); |
2974 | av_clear (GvAV (PL_defgv)); |
2590 | hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, |
2975 | hv_store (hv, "desc", sizeof ("desc") - 1, |
2591 | newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
2976 | newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
2592 | |
2977 | |
2593 | coro->prio = 0; |
2978 | coro->prio = 0; |
2594 | |
2979 | |
2595 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
2980 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
2596 | api_trace (aTHX_ coro_current, 0); |
2981 | api_trace (aTHX_ coro_current, 0); |
2597 | |
2982 | |
2598 | av_push (av_async_pool, newSVsv (coro_current)); |
2983 | av_push (av_async_pool, newSVsv (coro_current)); |
2599 | } |
2984 | } |
2600 | |
2985 | |
2601 | |
2986 | SV * |
2602 | MODULE = Coro::State PACKAGE = Coro::AIO |
2987 | rouse_cb () |
|
|
2988 | PROTOTYPE: |
|
|
2989 | CODE: |
|
|
2990 | RETVAL = coro_new_rouse_cb (aTHX); |
|
|
2991 | OUTPUT: |
|
|
2992 | RETVAL |
2603 | |
2993 | |
2604 | void |
2994 | void |
2605 | _get_state (SV *self) |
2995 | rouse_wait (SV *cb = 0) |
2606 | PROTOTYPE: $ |
2996 | PROTOTYPE: ;$ |
2607 | PPCODE: |
2997 | PPCODE: |
2608 | { |
2998 | CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); |
2609 | AV *defav = GvAV (PL_defgv); |
|
|
2610 | AV *av = newAV (); |
|
|
2611 | int i; |
|
|
2612 | SV *data_sv = newSV (sizeof (struct io_state)); |
|
|
2613 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2614 | SvCUR_set (data_sv, sizeof (struct io_state)); |
|
|
2615 | SvPOK_only (data_sv); |
|
|
2616 | |
|
|
2617 | data->errorno = errno; |
|
|
2618 | data->laststype = PL_laststype; |
|
|
2619 | data->laststatval = PL_laststatval; |
|
|
2620 | data->statcache = PL_statcache; |
|
|
2621 | |
|
|
2622 | av_extend (av, AvFILLp (defav) + 1 + 1); |
|
|
2623 | |
|
|
2624 | for (i = 0; i <= AvFILLp (defav); ++i) |
|
|
2625 | av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); |
|
|
2626 | |
|
|
2627 | av_push (av, data_sv); |
|
|
2628 | |
|
|
2629 | XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
2630 | |
|
|
2631 | api_ready (aTHX_ self); |
|
|
2632 | } |
|
|
2633 | |
|
|
2634 | void |
|
|
2635 | _set_state (SV *state) |
|
|
2636 | PROTOTYPE: $ |
|
|
2637 | PPCODE: |
|
|
2638 | { |
|
|
2639 | AV *av = (AV *)SvRV (state); |
|
|
2640 | struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); |
|
|
2641 | int i; |
|
|
2642 | |
|
|
2643 | errno = data->errorno; |
|
|
2644 | PL_laststype = data->laststype; |
|
|
2645 | PL_laststatval = data->laststatval; |
|
|
2646 | PL_statcache = data->statcache; |
|
|
2647 | |
|
|
2648 | EXTEND (SP, AvFILLp (av)); |
|
|
2649 | for (i = 0; i < AvFILLp (av); ++i) |
|
|
2650 | PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); |
|
|
2651 | } |
|
|
2652 | |
|
|
2653 | |
|
|
2654 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
|
|
2655 | |
|
|
2656 | BOOT: |
|
|
2657 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
|
|
2658 | |
|
|
2659 | void |
|
|
2660 | _schedule (...) |
|
|
2661 | CODE: |
|
|
2662 | { |
|
|
2663 | static int incede; |
|
|
2664 | |
|
|
2665 | api_cede_notself (aTHX); |
|
|
2666 | |
|
|
2667 | ++incede; |
|
|
2668 | while (coro_nready >= incede && api_cede (aTHX)) |
|
|
2669 | ; |
|
|
2670 | |
|
|
2671 | sv_setsv (sv_activity, &PL_sv_undef); |
|
|
2672 | if (coro_nready >= incede) |
|
|
2673 | { |
|
|
2674 | PUSHMARK (SP); |
|
|
2675 | PUTBACK; |
|
|
2676 | call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); |
|
|
2677 | SPAGAIN; |
|
|
2678 | } |
|
|
2679 | |
|
|
2680 | --incede; |
|
|
2681 | } |
|
|
2682 | |
2999 | |
2683 | |
3000 | |
2684 | MODULE = Coro::State PACKAGE = PerlIO::cede |
3001 | MODULE = Coro::State PACKAGE = PerlIO::cede |
2685 | |
3002 | |
2686 | BOOT: |
3003 | BOOT: |
2687 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
3004 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
2688 | |
3005 | |
|
|
3006 | |
2689 | MODULE = Coro::State PACKAGE = Coro::Semaphore |
3007 | MODULE = Coro::State PACKAGE = Coro::Semaphore |
2690 | |
3008 | |
2691 | SV * |
3009 | SV * |
2692 | new (SV *klass, SV *count_ = 0) |
3010 | new (SV *klass, SV *count = 0) |
2693 | CODE: |
3011 | CODE: |
2694 | { |
3012 | RETVAL = sv_bless ( |
2695 | /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
3013 | coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), |
2696 | AV *av = newAV (); |
3014 | GvSTASH (CvGV (cv)) |
2697 | av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); |
3015 | ); |
2698 | RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); |
3016 | OUTPUT: |
2699 | } |
3017 | RETVAL |
|
|
3018 | |
|
|
3019 | # helper for Coro::Channel |
|
|
3020 | SV * |
|
|
3021 | _alloc (int count) |
|
|
3022 | CODE: |
|
|
3023 | RETVAL = coro_waitarray_new (aTHX_ count); |
2700 | OUTPUT: |
3024 | OUTPUT: |
2701 | RETVAL |
3025 | RETVAL |
2702 | |
3026 | |
2703 | SV * |
3027 | SV * |
2704 | count (SV *self) |
3028 | count (SV *self) |
… | |
… | |
2716 | |
3040 | |
2717 | void |
3041 | void |
2718 | down (SV *self) |
3042 | down (SV *self) |
2719 | CODE: |
3043 | CODE: |
2720 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); |
3044 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); |
|
|
3045 | |
|
|
3046 | void |
|
|
3047 | wait (SV *self) |
|
|
3048 | CODE: |
|
|
3049 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); |
2721 | |
3050 | |
2722 | void |
3051 | void |
2723 | try (SV *self) |
3052 | try (SV *self) |
2724 | PPCODE: |
3053 | PPCODE: |
2725 | { |
3054 | { |
… | |
… | |
2737 | XSRETURN_NO; |
3066 | XSRETURN_NO; |
2738 | } |
3067 | } |
2739 | |
3068 | |
2740 | void |
3069 | void |
2741 | waiters (SV *self) |
3070 | waiters (SV *self) |
2742 | CODE: |
3071 | PPCODE: |
2743 | { |
3072 | { |
2744 | AV *av = (AV *)SvRV (self); |
3073 | AV *av = (AV *)SvRV (self); |
|
|
3074 | int wcount = AvFILLp (av) + 1 - 1; |
2745 | |
3075 | |
2746 | if (GIMME_V == G_SCALAR) |
3076 | if (GIMME_V == G_SCALAR) |
2747 | XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); |
3077 | XPUSHs (sv_2mortal (newSViv (wcount))); |
2748 | else |
3078 | else |
2749 | { |
3079 | { |
2750 | int i; |
3080 | int i; |
2751 | EXTEND (SP, AvFILLp (av) + 1 - 1); |
3081 | EXTEND (SP, wcount); |
2752 | for (i = 1; i <= AvFILLp (av); ++i) |
3082 | for (i = 1; i <= wcount; ++i) |
2753 | PUSHs (newSVsv (AvARRAY (av)[i])); |
3083 | PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); |
2754 | } |
3084 | } |
2755 | } |
3085 | } |
2756 | |
3086 | |
|
|
3087 | MODULE = Coro::State PACKAGE = Coro::Signal |
|
|
3088 | |
|
|
3089 | SV * |
|
|
3090 | new (SV *klass) |
|
|
3091 | CODE: |
|
|
3092 | RETVAL = sv_bless ( |
|
|
3093 | coro_waitarray_new (aTHX_ 0), |
|
|
3094 | GvSTASH (CvGV (cv)) |
|
|
3095 | ); |
|
|
3096 | OUTPUT: |
|
|
3097 | RETVAL |
|
|
3098 | |
|
|
3099 | void |
|
|
3100 | wait (SV *self) |
|
|
3101 | CODE: |
|
|
3102 | CORO_EXECUTE_SLF_XS (slf_init_signal_wait); |
|
|
3103 | |
|
|
3104 | void |
|
|
3105 | broadcast (SV *self) |
|
|
3106 | CODE: |
|
|
3107 | { |
|
|
3108 | AV *av = (AV *)SvRV (self); |
|
|
3109 | coro_signal_wake (aTHX_ av, AvFILLp (av)); |
|
|
3110 | } |
|
|
3111 | |
|
|
3112 | void |
|
|
3113 | send (SV *self) |
|
|
3114 | CODE: |
|
|
3115 | { |
|
|
3116 | AV *av = (AV *)SvRV (self); |
|
|
3117 | |
|
|
3118 | if (AvFILLp (av)) |
|
|
3119 | coro_signal_wake (aTHX_ av, 1); |
|
|
3120 | else |
|
|
3121 | SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ |
|
|
3122 | } |
|
|
3123 | |
|
|
3124 | IV |
|
|
3125 | awaited (SV *self) |
|
|
3126 | CODE: |
|
|
3127 | RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; |
|
|
3128 | OUTPUT: |
|
|
3129 | RETVAL |
|
|
3130 | |
|
|
3131 | |
|
|
3132 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
|
|
3133 | |
|
|
3134 | BOOT: |
|
|
3135 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
|
|
3136 | |
|
|
3137 | void |
|
|
3138 | _schedule (...) |
|
|
3139 | CODE: |
|
|
3140 | { |
|
|
3141 | static int incede; |
|
|
3142 | |
|
|
3143 | api_cede_notself (aTHX); |
|
|
3144 | |
|
|
3145 | ++incede; |
|
|
3146 | while (coro_nready >= incede && api_cede (aTHX)) |
|
|
3147 | ; |
|
|
3148 | |
|
|
3149 | sv_setsv (sv_activity, &PL_sv_undef); |
|
|
3150 | if (coro_nready >= incede) |
|
|
3151 | { |
|
|
3152 | PUSHMARK (SP); |
|
|
3153 | PUTBACK; |
|
|
3154 | call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
3155 | } |
|
|
3156 | |
|
|
3157 | --incede; |
|
|
3158 | } |
|
|
3159 | |
|
|
3160 | |
|
|
3161 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
3162 | |
|
|
3163 | void |
|
|
3164 | _register (char *target, char *proto, SV *req) |
|
|
3165 | CODE: |
|
|
3166 | { |
|
|
3167 | HV *st; |
|
|
3168 | GV *gvp; |
|
|
3169 | CV *req_cv = sv_2cv (req, &st, &gvp, 0); |
|
|
3170 | /* newXSproto doesn't return the CV on 5.8 */ |
|
|
3171 | CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); |
|
|
3172 | sv_setpv ((SV *)slf_cv, proto); |
|
|
3173 | sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); |
|
|
3174 | } |
|
|
3175 | |