ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.280 by root, Sun Nov 16 09:43:18 2008 UTC vs.
Revision 1.308 by root, Wed Nov 19 15:09:57 2008 UTC

… …
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
148static void *coro_thx; 154static void *coro_thx;
149# endif 155# endif
150#endif 156#endif
151 157
152/* helper storage struct for Coro::AIO */
153struct 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
162static double (*nvtime)(); /* so why doesn't it take void? */ 158static 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
162static OP *pp_slf (pTHX);
163 163
164static U32 cctx_gen; 164static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 168static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next;
172 171
173static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
174static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook; 174static SV *rv_diehook;
176static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
242/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
243struct coro { 242struct coro {
244 /* the C coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 244 coro_cctx *cctx;
246 245
247 /* process data */ 246 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 247 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 248 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
251 250
251 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */ 253 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 254 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 255 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro); 256 void (*on_destroy)(pTHX_ struct coro *coro);
257 257
258 /* statistics */ 258 /* statistics */
259 int usecount; /* number of transfers to this coro */ 259 int usecount; /* number of transfers to this coro */
260 260
261 /* coro process data */ 261 /* coro process data */
262 int prio; 262 int prio;
263 SV *throw; /* exception to be thrown */ 263 SV *except; /* exception to be thrown */
264 SV *rouse_cb;
264 265
265 /* async_pool */ 266 /* async_pool */
266 SV *saved_deffh; 267 SV *saved_deffh;
267 268
268 /* linked list */ 269 /* linked list */
… …
270}; 271};
271 272
272typedef struct coro *Coro__State; 273typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 274typedef struct coro *Coro__State_or_hashref;
274 275
276/* the following variables are effectively part of the perl context */
277/* and get copied between struct coro and these variables */
278/* the mainr easonw e don't support windows process emulation */
275static struct CoroSLF slf_frame; /* the current slf frame */ 279static struct CoroSLF slf_frame; /* the current slf frame */
276 280
277/** Coro ********************************************************************/ 281/** Coro ********************************************************************/
278 282
279#define PRIO_MAX 3 283#define PRIO_MAX 3
… …
318#if PERL_VERSION_ATLEAST (5,10,0) 322#if PERL_VERSION_ATLEAST (5,10,0)
319 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
320 get_hv (name, create); 324 get_hv (name, create);
321#endif 325#endif
322 return get_hv (name, create); 326 return get_hv (name, create);
327}
328
329/* may croak */
330INLINE CV *
331coro_sv_2cv (SV *sv)
332{
333 HV *st;
334 GV *gvp;
335 return sv_2cv (sv, &st, &gvp, 0);
323} 336}
324 337
325static AV * 338static AV *
326coro_clone_padlist (pTHX_ CV *cv) 339coro_clone_padlist (pTHX_ CV *cv)
327{ 340{
… …
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 394 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 395
383 return 0; 396 return 0;
384} 397}
385 398
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext 399#define CORO_MAGIC_type_cv 26
387#define CORO_MAGIC_type_state PERL_MAGIC_ext 400#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 401
389static MGVTBL coro_cv_vtbl = { 402static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 403 0, 0, 0, 0,
391 coro_cv_free 404 coro_cv_free
392}; 405};
393 406
407#define CORO_MAGIC_NN(sv, type) \
408 (expect_true (SvMAGIC (sv)->mg_type == type) \
409 ? SvMAGIC (sv) \
410 : mg_find (sv, type))
411
394#define CORO_MAGIC(sv, type) \ 412#define CORO_MAGIC(sv, type) \
395 SvMAGIC (sv) \ 413 (expect_true (SvMAGIC (sv)) \
396 ? SvMAGIC (sv)->mg_type == type \ 414 ? CORO_MAGIC_NN (sv, type) \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0 415 : 0)
400 416
401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 417#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 418#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
403 419
404INLINE struct coro * 420INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro) 421SvSTATE_ (pTHX_ SV *coro)
406{ 422{
407 HV *stash; 423 HV *stash;
… …
424 mg = CORO_MAGIC_state (coro); 440 mg = CORO_MAGIC_state (coro);
425 return (struct coro *)mg->mg_ptr; 441 return (struct coro *)mg->mg_ptr;
426} 442}
427 443
428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 444#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
445
446/* faster than SvSTATE, but expects a coroutine hv */
447#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
448#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
429 449
430/* the next two functions merely cache the padlists */ 450/* the next two functions merely cache the padlists */
431static void 451static void
432get_padlist (pTHX_ CV *cv) 452get_padlist (pTHX_ CV *cv)
433{ 453{
… …
439 else 459 else
440 { 460 {
441#if CORO_PREFER_PERL_FUNCTIONS 461#if CORO_PREFER_PERL_FUNCTIONS
442 /* this is probably cleaner? but also slower! */ 462 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */ 463 /* in practise, it seems to be less stable */
444 CV *cp = Perl_cv_clone (cv); 464 CV *cp = Perl_cv_clone (aTHX_ cv);
445 CvPADLIST (cv) = CvPADLIST (cp); 465 CvPADLIST (cv) = CvPADLIST (cp);
446 CvPADLIST (cp) = 0; 466 CvPADLIST (cp) = 0;
447 SvREFCNT_dec (cp); 467 SvREFCNT_dec (cp);
448#else 468#else
449 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 469 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
501 } 521 }
502 522
503 PUTBACK; 523 PUTBACK;
504 } 524 }
505 525
506 slf_frame = c->slf_frame; 526 slf_frame = c->slf_frame;
527 CORO_THROW = c->except;
507} 528}
508 529
509static void 530static void
510save_perl (pTHX_ Coro__State c) 531save_perl (pTHX_ Coro__State c)
511{ 532{
533 c->except = CORO_THROW;
512 c->slf_frame = slf_frame; 534 c->slf_frame = slf_frame;
513 535
514 { 536 {
515 dSP; 537 dSP;
516 I32 cxix = cxstack_ix; 538 I32 cxix = cxstack_ix;
… …
591 * of perl.c:init_stacks, except that it uses less memory 613 * of perl.c:init_stacks, except that it uses less memory
592 * on the (sometimes correct) assumption that coroutines do 614 * on the (sometimes correct) assumption that coroutines do
593 * not usually need a lot of stackspace. 615 * not usually need a lot of stackspace.
594 */ 616 */
595#if CORO_PREFER_PERL_FUNCTIONS 617#if CORO_PREFER_PERL_FUNCTIONS
596# define coro_init_stacks init_stacks 618# define coro_init_stacks(thx) init_stacks ()
597#else 619#else
598static void 620static void
599coro_init_stacks (pTHX) 621coro_init_stacks (pTHX)
600{ 622{
601 PL_curstackinfo = new_stackinfo(32, 8); 623 PL_curstackinfo = new_stackinfo(32, 8);
… …
809slf_check_nop (pTHX_ struct CoroSLF *frame) 831slf_check_nop (pTHX_ struct CoroSLF *frame)
810{ 832{
811 return 0; 833 return 0;
812} 834}
813 835
814static void 836static UNOP coro_setup_op;
837
838static void NOINLINE /* noinline to keep it out of the transfer fast path */
815coro_setup (pTHX_ struct coro *coro) 839coro_setup (pTHX_ struct coro *coro)
816{ 840{
817 /* 841 /*
818 * emulate part of the perl startup here. 842 * emulate part of the perl startup here.
819 */ 843 */
… …
846 { 870 {
847 dSP; 871 dSP;
848 UNOP myop; 872 UNOP myop;
849 873
850 Zero (&myop, 1, UNOP); 874 Zero (&myop, 1, UNOP);
851 myop.op_next = Nullop; 875 myop.op_next = Nullop;
876 myop.op_type = OP_ENTERSUB;
852 myop.op_flags = OPf_WANT_VOID; 877 myop.op_flags = OPf_WANT_VOID;
853 878
854 PUSHMARK (SP); 879 PUSHMARK (SP);
855 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 880 PUSHs ((SV *)coro->startcv);
856 PUTBACK; 881 PUTBACK;
857 PL_op = (OP *)&myop; 882 PL_op = (OP *)&myop;
858 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 883 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
859 SPAGAIN;
860 } 884 }
861 885
862 /* this newly created coroutine might be run on an existing cctx which most 886 /* this newly created coroutine might be run on an existing cctx which most
863 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 887 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
864 */ 888 */
865 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 889 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
866 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 890 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
891
892 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
893 coro_setup_op.op_next = PL_op;
894 coro_setup_op.op_type = OP_CUSTOM;
895 coro_setup_op.op_ppaddr = pp_slf;
896 /* no flags etc. required, as an init function won't be called */
897
898 PL_op = (OP *)&coro_setup_op;
899
900 /* copy throw, in case it was set before coro_setup */
901 CORO_THROW = coro->except;
867} 902}
868 903
869static void 904static void
870coro_destruct (pTHX_ struct coro *coro) 905coro_destruct (pTHX_ struct coro *coro)
871{ 906{
… …
895 930
896 SvREFCNT_dec (PL_diehook); 931 SvREFCNT_dec (PL_diehook);
897 SvREFCNT_dec (PL_warnhook); 932 SvREFCNT_dec (PL_warnhook);
898 933
899 SvREFCNT_dec (coro->saved_deffh); 934 SvREFCNT_dec (coro->saved_deffh);
900 SvREFCNT_dec (coro->throw); 935 SvREFCNT_dec (coro->rouse_cb);
901 936
902 coro_destruct_stacks (aTHX); 937 coro_destruct_stacks (aTHX);
903} 938}
904 939
905INLINE void 940INLINE void
… …
915static int 950static int
916runops_trace (pTHX) 951runops_trace (pTHX)
917{ 952{
918 COP *oldcop = 0; 953 COP *oldcop = 0;
919 int oldcxix = -2; 954 int oldcxix = -2;
920 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 955 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
921 coro_cctx *cctx = coro->cctx; 956 coro_cctx *cctx = coro->cctx;
922 957
923 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 958 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
924 { 959 {
925 PERL_ASYNC_CHECK (); 960 PERL_ASYNC_CHECK ();
… …
992 SAVETMPS; 1027 SAVETMPS;
993 EXTEND (SP, 3); 1028 EXTEND (SP, 3);
994 PUSHMARK (SP); 1029 PUSHMARK (SP);
995 PUSHs (&PL_sv_yes); 1030 PUSHs (&PL_sv_yes);
996 PUSHs (fullname); 1031 PUSHs (fullname);
997 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1032 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
998 PUTBACK; 1033 PUTBACK;
999 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1034 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1000 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1035 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1001 SPAGAIN; 1036 SPAGAIN;
1002 FREETMPS; 1037 FREETMPS;
… …
1034 1069
1035 TAINT_NOT; 1070 TAINT_NOT;
1036 return 0; 1071 return 0;
1037} 1072}
1038 1073
1074static struct coro_cctx *cctx_ssl_cctx;
1075static struct CoroSLF cctx_ssl_frame;
1076
1039static void 1077static void
1040prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1078slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1041{ 1079{
1042 ta->prev = (struct coro *)cctx; 1080 ta->prev = (struct coro *)cctx_ssl_cctx;
1043 ta->next = 0; 1081 ta->next = 0;
1044} 1082}
1045 1083
1046/* inject a fake call to Coro::State::_cctx_init into the execution */ 1084static int
1047/* _cctx_init should be careful, as it could be called at almost any time */ 1085slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1048/* during execution of a perl program */ 1086{
1049/* also initialises PL_top_env */ 1087 *frame = cctx_ssl_frame;
1088
1089 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1090}
1091
1092/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1050static void NOINLINE 1093static void NOINLINE
1051cctx_prepare (pTHX_ coro_cctx *cctx) 1094cctx_prepare (pTHX_ coro_cctx *cctx)
1052{ 1095{
1053 dSP;
1054 UNOP myop;
1055
1056 PL_top_env = &PL_start_env; 1096 PL_top_env = &PL_start_env;
1057 1097
1058 if (cctx->flags & CC_TRACE) 1098 if (cctx->flags & CC_TRACE)
1059 PL_runops = runops_trace; 1099 PL_runops = runops_trace;
1060 1100
1061 Zero (&myop, 1, UNOP); 1101 /* we already must be executing an SLF op, there is no other valid way
1062 myop.op_next = PL_op; 1102 * that can lead to creation of a new cctx */
1063 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1103 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1104 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1064 1105
1065 PUSHMARK (SP); 1106 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1066 EXTEND (SP, 2); 1107 cctx_ssl_cctx = cctx;
1067 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1108 cctx_ssl_frame = slf_frame;
1068 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1109
1069 PUTBACK; 1110 slf_frame.prepare = slf_prepare_set_stacklevel;
1070 PL_op = (OP *)&myop; 1111 slf_frame.check = slf_check_set_stacklevel;
1071 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1072 SPAGAIN;
1073} 1112}
1074 1113
1075/* the tail of transfer: execute stuff we can only do after a transfer */ 1114/* the tail of transfer: execute stuff we can only do after a transfer */
1076INLINE void 1115INLINE void
1077transfer_tail (pTHX) 1116transfer_tail (pTHX)
1078{ 1117{
1079 struct coro *next = (struct coro *)transfer_next;
1080 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1081 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1082
1083 free_coro_mortal (aTHX); 1118 free_coro_mortal (aTHX);
1084
1085 if (expect_false (next->throw))
1086 {
1087 SV *exception = sv_2mortal (next->throw);
1088
1089 next->throw = 0;
1090 sv_setsv (ERRSV, exception);
1091 croak (0);
1092 }
1093} 1119}
1094 1120
1095/* 1121/*
1096 * this is a _very_ stripped down perl interpreter ;) 1122 * this is a _very_ stripped down perl interpreter ;)
1097 */ 1123 */
… …
1112 1138
1113 /* inject a fake subroutine call to cctx_init */ 1139 /* inject a fake subroutine call to cctx_init */
1114 cctx_prepare (aTHX_ (coro_cctx *)arg); 1140 cctx_prepare (aTHX_ (coro_cctx *)arg);
1115 1141
1116 /* cctx_run is the alternative tail of transfer() */ 1142 /* cctx_run is the alternative tail of transfer() */
1117 /* TODO: throwing an exception here might be deadly, VERIFY */
1118 transfer_tail (aTHX); 1143 transfer_tail (aTHX);
1119 1144
1120 /* somebody or something will hit me for both perl_run and PL_restartop */ 1145 /* somebody or something will hit me for both perl_run and PL_restartop */
1121 PL_restartop = PL_op; 1146 PL_restartop = PL_op;
1122 perl_run (PL_curinterp); 1147 perl_run (PL_curinterp);
1148 /*
1149 * Unfortunately, there is no way to get at the return values of the
1150 * coro body here, as perl_run destroys these
1151 */
1123 1152
1124 /* 1153 /*
1125 * If perl-run returns we assume exit() was being called or the coro 1154 * If perl-run returns we assume exit() was being called or the coro
1126 * fell off the end, which seems to be the only valid (non-bug) 1155 * fell off the end, which seems to be the only valid (non-bug)
1127 * reason for perl_run to return. We try to exit by jumping to the 1156 * reason for perl_run to return. We try to exit by jumping to the
… …
1278/** coroutine switching *****************************************************/ 1307/** coroutine switching *****************************************************/
1279 1308
1280static void 1309static void
1281transfer_check (pTHX_ struct coro *prev, struct coro *next) 1310transfer_check (pTHX_ struct coro *prev, struct coro *next)
1282{ 1311{
1312 /* TODO: throwing up here is considered harmful */
1313
1283 if (expect_true (prev != next)) 1314 if (expect_true (prev != next))
1284 { 1315 {
1285 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1316 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1286 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1317 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1287 1318
… …
1297#endif 1328#endif
1298 } 1329 }
1299} 1330}
1300 1331
1301/* always use the TRANSFER macro */ 1332/* always use the TRANSFER macro */
1302static void NOINLINE 1333static void NOINLINE /* noinline so we have a fixed stackframe */
1303transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1334transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1304{ 1335{
1305 dSTACKLEVEL; 1336 dSTACKLEVEL;
1306 1337
1307 /* sometimes transfer is only called to set idle_sp */ 1338 /* sometimes transfer is only called to set idle_sp */
1308 if (expect_false (!next)) 1339 if (expect_false (!next))
1309 { 1340 {
1310 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1341 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1311 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1342 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1312 } 1343 }
1313 else if (expect_true (prev != next)) 1344 else if (expect_true (prev != next))
1314 { 1345 {
1315 coro_cctx *prev__cctx; 1346 coro_cctx *prev__cctx;
… …
1340 1371
1341 prev__cctx = prev->cctx; 1372 prev__cctx = prev->cctx;
1342 1373
1343 /* possibly untie and reuse the cctx */ 1374 /* possibly untie and reuse the cctx */
1344 if (expect_true ( 1375 if (expect_true (
1345 prev__cctx->idle_sp == (void *)stacklevel 1376 prev__cctx->idle_sp == STACKLEVEL
1346 && !(prev__cctx->flags & CC_TRACE) 1377 && !(prev__cctx->flags & CC_TRACE)
1347 && !force_cctx 1378 && !force_cctx
1348 )) 1379 ))
1349 { 1380 {
1350 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1381 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
… …
1364 ++next->usecount; 1395 ++next->usecount;
1365 1396
1366 if (expect_true (!next->cctx)) 1397 if (expect_true (!next->cctx))
1367 next->cctx = cctx_get (aTHX); 1398 next->cctx = cctx_get (aTHX);
1368 1399
1369 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1370 transfer_next = next;
1371
1372 if (expect_false (prev__cctx != next->cctx)) 1400 if (expect_false (prev__cctx != next->cctx))
1373 { 1401 {
1374 prev__cctx->top_env = PL_top_env; 1402 prev__cctx->top_env = PL_top_env;
1375 PL_top_env = next->cctx->top_env; 1403 PL_top_env = next->cctx->top_env;
1376 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1404 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
… …
1420 1448
1421 coro->slot = 0; 1449 coro->slot = 0;
1422 } 1450 }
1423 1451
1424 cctx_destroy (coro->cctx); 1452 cctx_destroy (coro->cctx);
1453 SvREFCNT_dec (coro->startcv);
1425 SvREFCNT_dec (coro->args); 1454 SvREFCNT_dec (coro->args);
1455 SvREFCNT_dec (CORO_THROW);
1426 1456
1427 if (coro->next) coro->next->prev = coro->prev; 1457 if (coro->next) coro->next->prev = coro->prev;
1428 if (coro->prev) coro->prev->next = coro->next; 1458 if (coro->prev) coro->prev->next = coro->next;
1429 if (coro == coro_first) coro_first = coro->next; 1459 if (coro == coro_first) coro_first = coro->next;
1430 1460
… …
1484 1514
1485 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1515 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1486 TRANSFER (ta, 1); 1516 TRANSFER (ta, 1);
1487} 1517}
1488 1518
1519/*****************************************************************************/
1520/* gensub: simple closure generation utility */
1521
1522#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1523
1524/* create a closure from XS, returns a code reference */
1525/* the arg can be accessed via GENSUB_ARG from the callback */
1526/* the callback must use dXSARGS/XSRETURN */
1527static SV *
1528gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1529{
1530 CV *cv = (CV *)newSV (0);
1531
1532 sv_upgrade ((SV *)cv, SVt_PVCV);
1533
1534 CvANON_on (cv);
1535 CvISXSUB_on (cv);
1536 CvXSUB (cv) = xsub;
1537 GENSUB_ARG = arg;
1538
1539 return newRV_noinc ((SV *)cv);
1540}
1541
1489/** Coro ********************************************************************/ 1542/** Coro ********************************************************************/
1490 1543
1491static void 1544INLINE void
1492coro_enq (pTHX_ SV *coro_sv) 1545coro_enq (pTHX_ struct coro *coro)
1493{ 1546{
1494 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1547 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1495} 1548}
1496 1549
1497static SV * 1550INLINE SV *
1498coro_deq (pTHX) 1551coro_deq (pTHX)
1499{ 1552{
1500 int prio; 1553 int prio;
1501 1554
1502 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1555 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1524 coro->flags |= CF_READY; 1577 coro->flags |= CF_READY;
1525 1578
1526 sv_hook = coro_nready ? 0 : coro_readyhook; 1579 sv_hook = coro_nready ? 0 : coro_readyhook;
1527 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1580 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1528 1581
1529 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1582 coro_enq (aTHX_ coro);
1530 ++coro_nready; 1583 ++coro_nready;
1531 1584
1532 if (sv_hook) 1585 if (sv_hook)
1533 { 1586 {
1534 dSP; 1587 dSP;
… …
1536 ENTER; 1589 ENTER;
1537 SAVETMPS; 1590 SAVETMPS;
1538 1591
1539 PUSHMARK (SP); 1592 PUSHMARK (SP);
1540 PUTBACK; 1593 PUTBACK;
1541 call_sv (sv_hook, G_DISCARD); 1594 call_sv (sv_hook, G_VOID | G_DISCARD);
1542 SPAGAIN;
1543 1595
1544 FREETMPS; 1596 FREETMPS;
1545 LEAVE; 1597 LEAVE;
1546 } 1598 }
1547 1599
… …
1574 ENTER; 1626 ENTER;
1575 SAVETMPS; 1627 SAVETMPS;
1576 1628
1577 PUSHMARK (SP); 1629 PUSHMARK (SP);
1578 PUTBACK; 1630 PUTBACK;
1579 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1631 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1580 SPAGAIN;
1581 1632
1582 FREETMPS; 1633 FREETMPS;
1583 LEAVE; 1634 LEAVE;
1584 continue; 1635 continue;
1585 } 1636 }
1586 1637
1587 ta->next = SvSTATE (next_sv); 1638 ta->next = SvSTATE_hv (next_sv);
1588 1639
1589 /* cannot transfer to destroyed coros, skip and look for next */ 1640 /* cannot transfer to destroyed coros, skip and look for next */
1590 if (expect_false (ta->next->flags & CF_DESTROYED)) 1641 if (expect_false (ta->next->flags & CF_DESTROYED))
1591 { 1642 {
1592 SvREFCNT_dec (next_sv); 1643 SvREFCNT_dec (next_sv);
… …
1598 break; 1649 break;
1599 } 1650 }
1600 1651
1601 /* free this only after the transfer */ 1652 /* free this only after the transfer */
1602 prev_sv = SvRV (coro_current); 1653 prev_sv = SvRV (coro_current);
1603 ta->prev = SvSTATE (prev_sv); 1654 ta->prev = SvSTATE_hv (prev_sv);
1604 TRANSFER_CHECK (*ta); 1655 TRANSFER_CHECK (*ta);
1605 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1656 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1606 ta->next->flags &= ~CF_READY; 1657 ta->next->flags &= ~CF_READY;
1607 SvRV_set (coro_current, next_sv); 1658 SvRV_set (coro_current, next_sv);
1608 1659
… …
1692 if (coro->flags & CF_RUNNING) 1743 if (coro->flags & CF_RUNNING)
1693 PL_runops = RUNOPS_DEFAULT; 1744 PL_runops = RUNOPS_DEFAULT;
1694 else 1745 else
1695 coro->slot->runops = RUNOPS_DEFAULT; 1746 coro->slot->runops = RUNOPS_DEFAULT;
1696 } 1747 }
1748}
1749
1750/*****************************************************************************/
1751/* rouse callback */
1752
1753#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1754
1755static void
1756coro_rouse_callback (pTHX_ CV *cv)
1757{
1758 dXSARGS;
1759 SV *data = (SV *)GENSUB_ARG;
1760
1761 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1762 {
1763 /* first call, set args */
1764 int i;
1765 AV *av = newAV ();
1766 SV *coro = SvRV (data);
1767
1768 SvRV_set (data, (SV *)av);
1769 api_ready (aTHX_ coro);
1770 SvREFCNT_dec (coro);
1771
1772 /* better take a full copy of the arguments */
1773 while (items--)
1774 av_store (av, items, newSVsv (ST (items)));
1775 }
1776
1777 XSRETURN_EMPTY;
1778}
1779
1780static int
1781slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1782{
1783 SV *data = (SV *)frame->data;
1784
1785 if (CORO_THROW)
1786 return 0;
1787
1788 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1789 return 1;
1790
1791 /* now push all results on the stack */
1792 {
1793 dSP;
1794 AV *av = (AV *)SvRV (data);
1795 int i;
1796
1797 EXTEND (SP, AvFILLp (av) + 1);
1798 for (i = 0; i <= AvFILLp (av); ++i)
1799 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1800
1801 /* we have stolen the elements, so ste length to zero and free */
1802 AvFILLp (av) = -1;
1803 av_undef (av);
1804
1805 PUTBACK;
1806 }
1807
1808 return 0;
1809}
1810
1811static void
1812slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1813{
1814 SV *cb;
1815
1816 if (items)
1817 cb = arg [0];
1818 else
1819 {
1820 struct coro *coro = SvSTATE_current;
1821
1822 if (!coro->rouse_cb)
1823 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1824
1825 cb = sv_2mortal (coro->rouse_cb);
1826 coro->rouse_cb = 0;
1827 }
1828
1829 if (!SvROK (cb)
1830 || SvTYPE (SvRV (cb)) != SVt_PVCV
1831 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1832 croak ("Coro::rouse_wait called with illegal callback argument,");
1833
1834 {
1835 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1836 SV *data = (SV *)GENSUB_ARG;
1837
1838 frame->data = (void *)data;
1839 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1840 frame->check = slf_check_rouse_wait;
1841 }
1842}
1843
1844static SV *
1845coro_new_rouse_cb (pTHX)
1846{
1847 HV *hv = (HV *)SvRV (coro_current);
1848 struct coro *coro = SvSTATE_hv (hv);
1849 SV *data = newRV_inc ((SV *)hv);
1850 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1851
1852 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1853 SvREFCNT_dec (data); /* magicext increases the refcount */
1854
1855 SvREFCNT_dec (coro->rouse_cb);
1856 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1857
1858 return cb;
1859}
1860
1861/*****************************************************************************/
1862/* schedule-like-function opcode (SLF) */
1863
1864static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1865static const CV *slf_cv;
1866static SV **slf_argv;
1867static int slf_argc, slf_arga; /* count, allocated */
1868static I32 slf_ax; /* top of stack, for restore */
1869
1870/* this restores the stack in the case we patched the entersub, to */
1871/* recreate the stack frame as perl will on following calls */
1872/* since entersub cleared the stack */
1873static OP *
1874pp_restore (pTHX)
1875{
1876 int i;
1877 SV **SP = PL_stack_base + slf_ax;
1878
1879 PUSHMARK (SP);
1880
1881 EXTEND (SP, slf_argc + 1);
1882
1883 for (i = 0; i < slf_argc; ++i)
1884 PUSHs (sv_2mortal (slf_argv [i]));
1885
1886 PUSHs ((SV *)CvGV (slf_cv));
1887
1888 RETURNOP (slf_restore.op_first);
1889}
1890
1891static void
1892slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1893{
1894 SV **arg = (SV **)slf_frame.data;
1895
1896 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1897}
1898
1899static void
1900slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1901{
1902 if (items != 2)
1903 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1904
1905 frame->prepare = slf_prepare_transfer;
1906 frame->check = slf_check_nop;
1907 frame->data = (void *)arg; /* let's hope it will stay valid */
1908}
1909
1910static void
1911slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1912{
1913 frame->prepare = prepare_schedule;
1914 frame->check = slf_check_nop;
1915}
1916
1917static void
1918slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1919{
1920 frame->prepare = prepare_cede;
1921 frame->check = slf_check_nop;
1922}
1923
1924static void
1925slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1926{
1927 frame->prepare = prepare_cede_notself;
1928 frame->check = slf_check_nop;
1929}
1930
1931/*
1932 * these not obviously related functions are all rolled into one
1933 * function to increase chances that they all will call transfer with the same
1934 * stack offset
1935 * SLF stands for "schedule-like-function".
1936 */
1937static OP *
1938pp_slf (pTHX)
1939{
1940 I32 checkmark; /* mark SP to see how many elements check has pushed */
1941
1942 /* set up the slf frame, unless it has already been set-up */
1943 /* the latter happens when a new coro has been started */
1944 /* or when a new cctx was attached to an existing coroutine */
1945 if (expect_true (!slf_frame.prepare))
1946 {
1947 /* first iteration */
1948 dSP;
1949 SV **arg = PL_stack_base + TOPMARK + 1;
1950 int items = SP - arg; /* args without function object */
1951 SV *gv = *sp;
1952
1953 /* do a quick consistency check on the "function" object, and if it isn't */
1954 /* for us, divert to the real entersub */
1955 if (SvTYPE (gv) != SVt_PVGV
1956 || !GvCV (gv)
1957 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1958 return PL_ppaddr[OP_ENTERSUB](aTHX);
1959
1960 if (!(PL_op->op_flags & OPf_STACKED))
1961 {
1962 /* ampersand-form of call, use @_ instead of stack */
1963 AV *av = GvAV (PL_defgv);
1964 arg = AvARRAY (av);
1965 items = AvFILLp (av) + 1;
1966 }
1967
1968 /* now call the init function, which needs to set up slf_frame */
1969 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1970 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1971
1972 /* pop args */
1973 SP = PL_stack_base + POPMARK;
1974
1975 PUTBACK;
1976 }
1977
1978 /* now that we have a slf_frame, interpret it! */
1979 /* we use a callback system not to make the code needlessly */
1980 /* complicated, but so we can run multiple perl coros from one cctx */
1981
1982 do
1983 {
1984 struct coro_transfer_args ta;
1985
1986 slf_frame.prepare (aTHX_ &ta);
1987 TRANSFER (ta, 0);
1988
1989 checkmark = PL_stack_sp - PL_stack_base;
1990 }
1991 while (slf_frame.check (aTHX_ &slf_frame));
1992
1993 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1994
1995 /* exception handling */
1996 if (expect_false (CORO_THROW))
1997 {
1998 SV *exception = sv_2mortal (CORO_THROW);
1999
2000 CORO_THROW = 0;
2001 sv_setsv (ERRSV, exception);
2002 croak (0);
2003 }
2004
2005 /* return value handling - mostly like entersub */
2006 /* make sure we put something on the stack in scalar context */
2007 if (GIMME_V == G_SCALAR)
2008 {
2009 dSP;
2010 SV **bot = PL_stack_base + checkmark;
2011
2012 if (sp == bot) /* too few, push undef */
2013 bot [1] = &PL_sv_undef;
2014 else if (sp != bot + 1) /* too many, take last one */
2015 bot [1] = *sp;
2016
2017 SP = bot + 1;
2018
2019 PUTBACK;
2020 }
2021
2022 return NORMAL;
2023}
2024
2025static void
2026api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2027{
2028 int i;
2029 SV **arg = PL_stack_base + ax;
2030 int items = PL_stack_sp - arg + 1;
2031
2032 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2033
2034 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2035 && PL_op->op_ppaddr != pp_slf)
2036 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2037
2038 CvFLAGS (cv) |= CVf_SLF;
2039 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2040 slf_cv = cv;
2041
2042 /* we patch the op, and then re-run the whole call */
2043 /* we have to put the same argument on the stack for this to work */
2044 /* and this will be done by pp_restore */
2045 slf_restore.op_next = (OP *)&slf_restore;
2046 slf_restore.op_type = OP_CUSTOM;
2047 slf_restore.op_ppaddr = pp_restore;
2048 slf_restore.op_first = PL_op;
2049
2050 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2051
2052 if (PL_op->op_flags & OPf_STACKED)
2053 {
2054 if (items > slf_arga)
2055 {
2056 slf_arga = items;
2057 free (slf_argv);
2058 slf_argv = malloc (slf_arga * sizeof (SV *));
2059 }
2060
2061 slf_argc = items;
2062
2063 for (i = 0; i < items; ++i)
2064 slf_argv [i] = SvREFCNT_inc (arg [i]);
2065 }
2066 else
2067 slf_argc = 0;
2068
2069 PL_op->op_ppaddr = pp_slf;
2070 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2071
2072 PL_op = (OP *)&slf_restore;
1697} 2073}
1698 2074
1699/*****************************************************************************/ 2075/*****************************************************************************/
1700/* PerlIO::cede */ 2076/* PerlIO::cede */
1701 2077
… …
1770 PerlIOBuf_get_cnt, 2146 PerlIOBuf_get_cnt,
1771 PerlIOBuf_set_ptrcnt, 2147 PerlIOBuf_set_ptrcnt,
1772}; 2148};
1773 2149
1774/*****************************************************************************/ 2150/*****************************************************************************/
2151/* Coro::Semaphore & Coro::Signal */
1775 2152
1776static const CV *slf_cv; /* for quick consistency check */
1777
1778static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1779static SV *slf_arg0;
1780static SV *slf_arg1;
1781static SV *slf_arg2;
1782
1783/* this restores the stack in the case we patched the entersub, to */
1784/* recreate the stack frame as perl will on following calls */
1785/* since entersub cleared the stack */
1786static OP * 2153static SV *
1787pp_restore (pTHX) 2154coro_waitarray_new (pTHX_ int count)
1788{ 2155{
1789 dSP; 2156 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2157 AV *av = newAV ();
2158 SV **ary;
1790 2159
1791 PUSHMARK (SP); 2160 /* unfortunately, building manually saves memory */
2161 Newx (ary, 2, SV *);
2162 AvALLOC (av) = ary;
2163 /*AvARRAY (av) = ary;*/
2164 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2165 AvMAX (av) = 1;
2166 AvFILLp (av) = 0;
2167 ary [0] = newSViv (count);
1792 2168
1793 EXTEND (SP, 3); 2169 return newRV_noinc ((SV *)av);
1794 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1795 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1796 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1797 PUSHs ((SV *)CvGV (slf_cv));
1798
1799 RETURNOP (slf_restore.op_first);
1800} 2170}
1801 2171
1802static void 2172/* semaphore */
1803slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1804{
1805 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1806}
1807 2173
1808static void 2174static void
1809slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1810{
1811 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1812
1813 frame->prepare = slf_prepare_set_stacklevel;
1814 frame->check = slf_check_nop;
1815 frame->data = (void *)SvIV (arg [0]);
1816}
1817
1818static void
1819slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1820{
1821 SV **arg = (SV **)slf_frame.data;
1822
1823 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1824}
1825
1826static void
1827slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1828{
1829 if (items != 2)
1830 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1831
1832 frame->prepare = slf_prepare_transfer;
1833 frame->check = slf_check_nop;
1834 frame->data = (void *)arg; /* let's hope it will stay valid */
1835}
1836
1837static void
1838slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 frame->prepare = prepare_schedule;
1841 frame->check = slf_check_nop;
1842}
1843
1844static void
1845slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1846{
1847 frame->prepare = prepare_cede;
1848 frame->check = slf_check_nop;
1849}
1850
1851static void
1852slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1853{
1854 frame->prepare = prepare_cede_notself;
1855 frame->check = slf_check_nop;
1856}
1857
1858/* we hijack an hopefully unused CV flag for our purposes */
1859#define CVf_SLF 0x4000
1860
1861/*
1862 * these not obviously related functions are all rolled into one
1863 * function to increase chances that they all will call transfer with the same
1864 * stack offset
1865 * SLF stands for "schedule-like-function".
1866 */
1867static OP *
1868pp_slf (pTHX)
1869{
1870 I32 checkmark; /* mark SP to see how many elements check has pushed */
1871
1872 /* set up the slf frame, unless it has already been set-up */
1873 /* the latter happens when a new coro has been started */
1874 /* or when a new cctx was attached to an existing coroutine */
1875 if (expect_true (!slf_frame.prepare))
1876 {
1877 /* first iteration */
1878 dSP;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 SV *gv = *sp;
1882
1883 /* do a quick consistency check on the "function" object, and if it isn't */
1884 /* for us, divert to the real entersub */
1885 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1886 return PL_ppaddr[OP_ENTERSUB](aTHX);
1887
1888 /* pop args */
1889 SP = PL_stack_base + POPMARK;
1890
1891 if (!(PL_op->op_flags & OPf_STACKED))
1892 {
1893 /* ampersand-form of call, use @_ instead of stack */
1894 AV *av = GvAV (PL_defgv);
1895 arg = AvARRAY (av);
1896 items = AvFILLp (av) + 1;
1897 }
1898
1899 PUTBACK;
1900
1901 /* now call the init function, which needs to set up slf_frame */
1902 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1903 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1904 }
1905
1906 /* now that we have a slf_frame, interpret it! */
1907 /* we use a callback system not to make the code needlessly */
1908 /* complicated, but so we can run multiple perl coros from one cctx */
1909
1910 do
1911 {
1912 struct coro_transfer_args ta;
1913
1914 slf_frame.prepare (aTHX_ &ta);
1915 TRANSFER (ta, 0);
1916
1917 checkmark = PL_stack_sp - PL_stack_base;
1918 }
1919 while (slf_frame.check (aTHX_ &slf_frame));
1920
1921 {
1922 dSP;
1923 SV **bot = PL_stack_base + checkmark;
1924 int gimme = GIMME_V;
1925
1926 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1927
1928 /* make sure we put something on the stack in scalar context */
1929 if (gimme == G_SCALAR)
1930 {
1931 if (sp == bot)
1932 XPUSHs (&PL_sv_undef);
1933
1934 SP = bot + 1;
1935 }
1936
1937 PUTBACK;
1938 }
1939
1940 return NORMAL;
1941}
1942
1943static void
1944api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1945{
1946 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1947
1948 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1949 && PL_op->op_ppaddr != pp_slf)
1950 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1951
1952 if (items > 3)
1953 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1954
1955 CvFLAGS (cv) |= CVf_SLF;
1956 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1957 slf_cv = cv;
1958
1959 /* we patch the op, and then re-run the whole call */
1960 /* we have to put the same argument on the stack for this to work */
1961 /* and this will be done by pp_restore */
1962 slf_restore.op_next = (OP *)&slf_restore;
1963 slf_restore.op_type = OP_CUSTOM;
1964 slf_restore.op_ppaddr = pp_restore;
1965 slf_restore.op_first = PL_op;
1966
1967 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1968 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1969 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1970
1971 PL_op->op_ppaddr = pp_slf;
1972
1973 PL_op = (OP *)&slf_restore;
1974}
1975
1976/*****************************************************************************/
1977
1978static void
1979coro_semaphore_adjust (AV *av, int adjust) 2175coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1980{ 2176{
1981 SV *count_sv = AvARRAY (av)[0]; 2177 SV *count_sv = AvARRAY (av)[0];
1982 IV count = SvIVX (count_sv); 2178 IV count = SvIVX (count_sv);
1983 2179
1984 count += adjust; 2180 count += adjust;
1985 SvIVX (count_sv) = count; 2181 SvIVX (count_sv) = count;
1986 2182
1987 /* now wake up as many waiters as possible */ 2183 /* now wake up as many waiters as are expected to lock */
1988 while (count > 0 && AvFILLp (av) >= count) 2184 while (count > 0 && AvFILLp (av) > 0)
1989 { 2185 {
1990 SV *cb; 2186 SV *cb;
1991 2187
1992 /* swap first two elements so we can shift a waiter */ 2188 /* swap first two elements so we can shift a waiter */
1993 AvARRAY (av)[0] = AvARRAY (av)[1]; 2189 AvARRAY (av)[0] = AvARRAY (av)[1];
1994 AvARRAY (av)[1] = count_sv; 2190 AvARRAY (av)[1] = count_sv;
1995 cb = av_shift (av); 2191 cb = av_shift (av);
1996 2192
1997 if (SvOBJECT (cb)) 2193 if (SvOBJECT (cb))
2194 {
1998 api_ready (aTHX_ cb); 2195 api_ready (aTHX_ cb);
1999 else 2196 --count;
2000 croak ("callbacks not yet supported"); 2197 }
2198 else if (SvTYPE (cb) == SVt_PVCV)
2199 {
2200 dSP;
2201 PUSHMARK (SP);
2202 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2203 PUTBACK;
2204 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2205 }
2001 2206
2002 SvREFCNT_dec (cb); 2207 SvREFCNT_dec (cb);
2003
2004 --count;
2005 } 2208 }
2006} 2209}
2007 2210
2008static void 2211static void
2009coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2212coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2010{ 2213{
2011 /* call $sem->adjust (0) to possibly wake up some waiters */ 2214 /* call $sem->adjust (0) to possibly wake up some other waiters */
2012 coro_semaphore_adjust ((AV *)coro->slf_frame.data, 0); 2215 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2013} 2216}
2014 2217
2015static int 2218static int
2016slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2219slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2017{ 2220{
2018 AV *av = (AV *)frame->data; 2221 AV *av = (AV *)frame->data;
2019 SV *count_sv = AvARRAY (av)[0]; 2222 SV *count_sv = AvARRAY (av)[0];
2020 2223
2224 /* if we are about to throw, don't actually acquire the lock, just throw */
2225 if (CORO_THROW)
2226 return 0;
2021 if (SvIVX (count_sv) > 0) 2227 else if (SvIVX (count_sv) > 0)
2022 { 2228 {
2023 SvSTATE (coro_current)->on_destroy = 0; 2229 SvSTATE_current->on_destroy = 0;
2230
2231 if (acquire)
2024 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2232 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2233 else
2234 coro_semaphore_adjust (aTHX_ av, 0);
2235
2025 return 0; 2236 return 0;
2026 } 2237 }
2027 else 2238 else
2028 { 2239 {
2029 int i; 2240 int i;
… …
2038 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2249 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2039 return 1; 2250 return 1;
2040 } 2251 }
2041} 2252}
2042 2253
2043static void 2254static int
2255slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2256{
2257 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2258}
2259
2260static int
2261slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2262{
2263 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2264}
2265
2266static void
2044slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2267slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2045{ 2268{
2046 AV *av = (AV *)SvRV (arg [0]); 2269 AV *av = (AV *)SvRV (arg [0]);
2047 2270
2048 if (SvIVX (AvARRAY (av)[0]) > 0) 2271 if (SvIVX (AvARRAY (av)[0]) > 0)
2049 { 2272 {
… …
2057 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2280 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2058 frame->prepare = prepare_schedule; 2281 frame->prepare = prepare_schedule;
2059 2282
2060 /* to avoid race conditions when a woken-up coro gets terminated */ 2283 /* to avoid race conditions when a woken-up coro gets terminated */
2061 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2284 /* we arrange for a temporary on_destroy that calls adjust (0) */
2062 SvSTATE (coro_current)->on_destroy = coro_semaphore_on_destroy; 2285 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2063 } 2286 }
2287}
2064 2288
2289static void
2290slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2291{
2292 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 2293 frame->check = slf_check_semaphore_down;
2294}
2066 2295
2296static void
2297slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2298{
2299 if (items >= 2)
2300 {
2301 /* callback form */
2302 AV *av = (AV *)SvRV (arg [0]);
2303 CV *cb_cv = coro_sv_2cv (arg [1]);
2304
2305 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2306
2307 if (SvIVX (AvARRAY (av)[0]) > 0)
2308 coro_semaphore_adjust (aTHX_ av, 0);
2309
2310 frame->prepare = prepare_nop;
2311 frame->check = slf_check_nop;
2312 }
2313 else
2314 {
2315 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2316 frame->check = slf_check_semaphore_wait;
2317 }
2318}
2319
2320/* signal */
2321
2322static void
2323coro_signal_wake (pTHX_ AV *av, int count)
2324{
2325 SvIVX (AvARRAY (av)[0]) = 0;
2326
2327 /* now signal count waiters */
2328 while (count > 0 && AvFILLp (av) > 0)
2329 {
2330 SV *cb;
2331
2332 /* swap first two elements so we can shift a waiter */
2333 cb = AvARRAY (av)[0];
2334 AvARRAY (av)[0] = AvARRAY (av)[1];
2335 AvARRAY (av)[1] = cb;
2336
2337 cb = av_shift (av);
2338
2339 api_ready (aTHX_ cb);
2340 sv_setiv (cb, 0); /* signal waiter */
2341 SvREFCNT_dec (cb);
2342
2343 --count;
2344 }
2345}
2346
2347static int
2348slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2349{
2350 /* if we are about to throw, also stop waiting */
2351 return SvROK ((SV *)frame->data) && !CORO_THROW;
2352}
2353
2354static void
2355slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2356{
2357 AV *av = (AV *)SvRV (arg [0]);
2358
2359 if (SvIVX (AvARRAY (av)[0]))
2360 {
2361 SvIVX (AvARRAY (av)[0]) = 0;
2362 frame->prepare = prepare_nop;
2363 frame->check = slf_check_nop;
2364 }
2365 else
2366 {
2367 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2368
2369 av_push (av, waiter);
2370
2371 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2372 frame->prepare = prepare_schedule;
2373 frame->check = slf_check_signal_wait;
2374 }
2067} 2375}
2068 2376
2069/*****************************************************************************/ 2377/*****************************************************************************/
2378/* Coro::AIO */
2070 2379
2071#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2380#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2072 2381
2073/* create a closure from XS, returns a code reference */ 2382/* helper storage struct */
2074/* the arg can be accessed via GENSUB_ARG from the callback */ 2383struct io_state
2075/* the callback must use dXSARGS/XSRETURN */
2076static SV *
2077gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2078{ 2384{
2079 CV *cv = (CV *)NEWSV (0, 0); 2385 int errorno;
2386 I32 laststype; /* U16 in 5.10.0 */
2387 int laststatval;
2388 Stat_t statcache;
2389};
2080 2390
2391static void
2392coro_aio_callback (pTHX_ CV *cv)
2393{
2394 dXSARGS;
2395 AV *state = (AV *)GENSUB_ARG;
2396 SV *coro = av_pop (state);
2397 SV *data_sv = newSV (sizeof (struct io_state));
2398
2399 av_extend (state, items);
2400
2081 sv_upgrade ((SV *)cv, SVt_PVCV); 2401 sv_upgrade (data_sv, SVt_PV);
2402 SvCUR_set (data_sv, sizeof (struct io_state));
2403 SvPOK_only (data_sv);
2082 2404
2083 CvANON_on (cv); 2405 {
2084 CvISXSUB_on (cv); 2406 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2085 CvXSUB (cv) = xsub;
2086 GENSUB_ARG = arg;
2087 2407
2088 return newRV_noinc ((SV *)cv); 2408 data->errorno = errno;
2409 data->laststype = PL_laststype;
2410 data->laststatval = PL_laststatval;
2411 data->statcache = PL_statcache;
2412 }
2413
2414 /* now build the result vector out of all the parameters and the data_sv */
2415 {
2416 int i;
2417
2418 for (i = 0; i < items; ++i)
2419 av_push (state, SvREFCNT_inc_NN (ST (i)));
2420 }
2421
2422 av_push (state, data_sv);
2423
2424 api_ready (aTHX_ coro);
2425 SvREFCNT_dec (coro);
2426 SvREFCNT_dec ((AV *)state);
2427}
2428
2429static int
2430slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2431{
2432 AV *state = (AV *)frame->data;
2433
2434 /* if we are about to throw, return early */
2435 /* this does not cancel the aio request, but at least */
2436 /* it quickly returns */
2437 if (CORO_THROW)
2438 return 0;
2439
2440 /* one element that is an RV? repeat! */
2441 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2442 return 1;
2443
2444 /* restore status */
2445 {
2446 SV *data_sv = av_pop (state);
2447 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2448
2449 errno = data->errorno;
2450 PL_laststype = data->laststype;
2451 PL_laststatval = data->laststatval;
2452 PL_statcache = data->statcache;
2453
2454 SvREFCNT_dec (data_sv);
2455 }
2456
2457 /* push result values */
2458 {
2459 dSP;
2460 int i;
2461
2462 EXTEND (SP, AvFILLp (state) + 1);
2463 for (i = 0; i <= AvFILLp (state); ++i)
2464 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2465
2466 PUTBACK;
2467 }
2468
2469 return 0;
2470}
2471
2472static void
2473slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2474{
2475 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2476 SV *coro_hv = SvRV (coro_current);
2477 struct coro *coro = SvSTATE_hv (coro_hv);
2478
2479 /* put our coroutine id on the state arg */
2480 av_push (state, SvREFCNT_inc_NN (coro_hv));
2481
2482 /* first see whether we have a non-zero priority and set it as AIO prio */
2483 if (coro->prio)
2484 {
2485 dSP;
2486
2487 static SV *prio_cv;
2488 static SV *prio_sv;
2489
2490 if (expect_false (!prio_cv))
2491 {
2492 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2493 prio_sv = newSViv (0);
2494 }
2495
2496 PUSHMARK (SP);
2497 sv_setiv (prio_sv, coro->prio);
2498 XPUSHs (prio_sv);
2499
2500 PUTBACK;
2501 call_sv (prio_cv, G_VOID | G_DISCARD);
2502 }
2503
2504 /* now call the original request */
2505 {
2506 dSP;
2507 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2508 int i;
2509
2510 PUSHMARK (SP);
2511
2512 /* first push all args to the stack */
2513 EXTEND (SP, items + 1);
2514
2515 for (i = 0; i < items; ++i)
2516 PUSHs (arg [i]);
2517
2518 /* now push the callback closure */
2519 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2520
2521 /* now call the AIO function - we assume our request is uncancelable */
2522 PUTBACK;
2523 call_sv ((SV *)req, G_VOID | G_DISCARD);
2524 }
2525
2526 /* now that the requets is going, we loop toll we have a result */
2527 frame->data = (void *)state;
2528 frame->prepare = prepare_schedule;
2529 frame->check = slf_check_aio_req;
2530}
2531
2532static void
2533coro_aio_req_xs (pTHX_ CV *cv)
2534{
2535 dXSARGS;
2536
2537 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2538
2539 XSRETURN_EMPTY;
2089} 2540}
2090 2541
2091/*****************************************************************************/ 2542/*****************************************************************************/
2092 2543
2093MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2544MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
… …
2095PROTOTYPES: DISABLE 2546PROTOTYPES: DISABLE
2096 2547
2097BOOT: 2548BOOT:
2098{ 2549{
2099#ifdef USE_ITHREADS 2550#ifdef USE_ITHREADS
2100 MUTEX_INIT (&coro_lock);
2101# if CORO_PTHREAD 2551# if CORO_PTHREAD
2102 coro_thx = PERL_GET_CONTEXT; 2552 coro_thx = PERL_GET_CONTEXT;
2103# endif 2553# endif
2104#endif 2554#endif
2105 BOOT_PAGESIZE; 2555 BOOT_PAGESIZE;
… …
2169 CODE: 2619 CODE:
2170{ 2620{
2171 struct coro *coro; 2621 struct coro *coro;
2172 MAGIC *mg; 2622 MAGIC *mg;
2173 HV *hv; 2623 HV *hv;
2624 CV *cb;
2174 int i; 2625 int i;
2626
2627 if (items > 1)
2628 {
2629 cb = coro_sv_2cv (ST (1));
2630
2631 if (CvISXSUB (cb))
2632 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2633
2634 if (!CvROOT (cb))
2635 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2636 }
2175 2637
2176 Newz (0, coro, 1, struct coro); 2638 Newz (0, coro, 1, struct coro);
2177 coro->args = newAV (); 2639 coro->args = newAV ();
2178 coro->flags = CF_NEW; 2640 coro->flags = CF_NEW;
2179 2641
… …
2184 coro->hv = hv = newHV (); 2646 coro->hv = hv = newHV ();
2185 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2647 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2186 mg->mg_flags |= MGf_DUP; 2648 mg->mg_flags |= MGf_DUP;
2187 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2649 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2188 2650
2651 if (items > 1)
2652 {
2653 coro->startcv = SvREFCNT_inc_NN (cb);
2654
2189 av_extend (coro->args, items - 1); 2655 av_extend (coro->args, items - 1);
2190 for (i = 1; i < items; i++) 2656 for (i = 2; i < items; i++)
2191 av_push (coro->args, newSVsv (ST (i))); 2657 av_push (coro->args, newSVsv (ST (i)));
2658 }
2192} 2659}
2193 OUTPUT: 2660 OUTPUT:
2194 RETVAL 2661 RETVAL
2195
2196void
2197_set_stacklevel (...)
2198 CODE:
2199 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2200 2662
2201void 2663void
2202transfer (...) 2664transfer (...)
2203 PROTOTYPE: $$ 2665 PROTOTYPE: $$
2204 CODE: 2666 CODE:
2205 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2667 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2206 2668
2207bool 2669bool
2208_destroy (SV *coro_sv) 2670_destroy (SV *coro_sv)
2209 CODE: 2671 CODE:
2210 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2672 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2328 2790
2329void 2791void
2330throw (Coro::State self, SV *throw = &PL_sv_undef) 2792throw (Coro::State self, SV *throw = &PL_sv_undef)
2331 PROTOTYPE: $;$ 2793 PROTOTYPE: $;$
2332 CODE: 2794 CODE:
2795{
2796 struct coro *current = SvSTATE_current;
2797 SV **throwp = self == current ? &CORO_THROW : &self->except;
2333 SvREFCNT_dec (self->throw); 2798 SvREFCNT_dec (*throwp);
2334 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2799 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2800}
2335 2801
2336void 2802void
2337api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2803api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2338 PROTOTYPE: $;$ 2804 PROTOTYPE: $;$
2339 C_ARGS: aTHX_ coro, flags 2805 C_ARGS: aTHX_ coro, flags
… …
2370 2836
2371void 2837void
2372force_cctx () 2838force_cctx ()
2373 PROTOTYPE: 2839 PROTOTYPE:
2374 CODE: 2840 CODE:
2375 struct coro *coro = SvSTATE (coro_current);
2376 coro->cctx->idle_sp = 0; 2841 SvSTATE_current->cctx->idle_sp = 0;
2377 2842
2378void 2843void
2379swap_defsv (Coro::State self) 2844swap_defsv (Coro::State self)
2380 PROTOTYPE: $ 2845 PROTOTYPE: $
2381 ALIAS: 2846 ALIAS:
… …
2389 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2854 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2390 2855
2391 SV *tmp = *src; *src = *dst; *dst = tmp; 2856 SV *tmp = *src; *src = *dst; *dst = tmp;
2392 } 2857 }
2393 2858
2859
2394MODULE = Coro::State PACKAGE = Coro 2860MODULE = Coro::State PACKAGE = Coro
2395 2861
2396BOOT: 2862BOOT:
2397{ 2863{
2398 int i; 2864 int i;
… …
2425 coroapi.ready = api_ready; 2891 coroapi.ready = api_ready;
2426 coroapi.is_ready = api_is_ready; 2892 coroapi.is_ready = api_is_ready;
2427 coroapi.nready = coro_nready; 2893 coroapi.nready = coro_nready;
2428 coroapi.current = coro_current; 2894 coroapi.current = coro_current;
2429 2895
2430 GCoroAPI = &coroapi; 2896 /*GCoroAPI = &coroapi;*/
2431 sv_setiv (sv, (IV)&coroapi); 2897 sv_setiv (sv, (IV)&coroapi);
2432 SvREADONLY_on (sv); 2898 SvREADONLY_on (sv);
2433 } 2899 }
2434} 2900}
2435 2901
2436void 2902void
2437schedule (...) 2903schedule (...)
2438 CODE: 2904 CODE:
2439 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 2905 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2440 2906
2441void 2907void
2442cede (...) 2908cede (...)
2443 CODE: 2909 CODE:
2444 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 2910 CORO_EXECUTE_SLF_XS (slf_init_cede);
2445 2911
2446void 2912void
2447cede_notself (...) 2913cede_notself (...)
2448 CODE: 2914 CODE:
2449 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 2915 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2450 2916
2451void 2917void
2452_set_current (SV *current) 2918_set_current (SV *current)
2453 PROTOTYPE: $ 2919 PROTOTYPE: $
2454 CODE: 2920 CODE:
… …
2504# for async_pool speedup 2970# for async_pool speedup
2505void 2971void
2506_pool_1 (SV *cb) 2972_pool_1 (SV *cb)
2507 CODE: 2973 CODE:
2508{ 2974{
2509 struct coro *coro = SvSTATE (coro_current);
2510 HV *hv = (HV *)SvRV (coro_current); 2975 HV *hv = (HV *)SvRV (coro_current);
2976 struct coro *coro = SvSTATE_hv ((SV *)hv);
2511 AV *defav = GvAV (PL_defgv); 2977 AV *defav = GvAV (PL_defgv);
2512 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2978 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2513 AV *invoke_av; 2979 AV *invoke_av;
2514 int i, len; 2980 int i, len;
2515 2981
… …
2542 3008
2543void 3009void
2544_pool_2 (SV *cb) 3010_pool_2 (SV *cb)
2545 CODE: 3011 CODE:
2546{ 3012{
2547 struct coro *coro = SvSTATE (coro_current); 3013 HV *hv = (HV *)SvRV (coro_current);
3014 struct coro *coro = SvSTATE_hv ((SV *)hv);
2548 3015
2549 sv_setsv (cb, &PL_sv_undef); 3016 sv_setsv (cb, &PL_sv_undef);
2550 3017
2551 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3018 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2552 coro->saved_deffh = 0; 3019 coro->saved_deffh = 0;
… …
2559 SvREFCNT_dec (old); 3026 SvREFCNT_dec (old);
2560 croak ("\3async_pool terminate\2\n"); 3027 croak ("\3async_pool terminate\2\n");
2561 } 3028 }
2562 3029
2563 av_clear (GvAV (PL_defgv)); 3030 av_clear (GvAV (PL_defgv));
2564 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 3031 hv_store (hv, "desc", sizeof ("desc") - 1,
2565 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 3032 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2566 3033
2567 coro->prio = 0; 3034 coro->prio = 0;
2568 3035
2569 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3036 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2570 api_trace (aTHX_ coro_current, 0); 3037 api_trace (aTHX_ coro_current, 0);
2571 3038
2572 av_push (av_async_pool, newSVsv (coro_current)); 3039 av_push (av_async_pool, newSVsv (coro_current));
2573} 3040}
2574 3041
2575 3042SV *
2576MODULE = Coro::State PACKAGE = Coro::AIO 3043rouse_cb ()
3044 PROTOTYPE:
3045 CODE:
3046 RETVAL = coro_new_rouse_cb (aTHX);
3047 OUTPUT:
3048 RETVAL
2577 3049
2578void 3050void
2579_get_state (SV *self) 3051rouse_wait (...)
2580 PROTOTYPE: $ 3052 PROTOTYPE: ;$
2581 PPCODE: 3053 PPCODE:
2582{ 3054 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2583 AV *defav = GvAV (PL_defgv);
2584 AV *av = newAV ();
2585 int i;
2586 SV *data_sv = newSV (sizeof (struct io_state));
2587 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2588 SvCUR_set (data_sv, sizeof (struct io_state));
2589 SvPOK_only (data_sv);
2590
2591 data->errorno = errno;
2592 data->laststype = PL_laststype;
2593 data->laststatval = PL_laststatval;
2594 data->statcache = PL_statcache;
2595
2596 av_extend (av, AvFILLp (defav) + 1 + 1);
2597
2598 for (i = 0; i <= AvFILLp (defav); ++i)
2599 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2600
2601 av_push (av, data_sv);
2602
2603 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2604
2605 api_ready (aTHX_ self);
2606}
2607
2608void
2609_set_state (SV *state)
2610 PROTOTYPE: $
2611 PPCODE:
2612{
2613 AV *av = (AV *)SvRV (state);
2614 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2615 int i;
2616
2617 errno = data->errorno;
2618 PL_laststype = data->laststype;
2619 PL_laststatval = data->laststatval;
2620 PL_statcache = data->statcache;
2621
2622 EXTEND (SP, AvFILLp (av));
2623 for (i = 0; i < AvFILLp (av); ++i)
2624 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2625}
2626
2627
2628MODULE = Coro::State PACKAGE = Coro::AnyEvent
2629
2630BOOT:
2631 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2632
2633void
2634_schedule (...)
2635 CODE:
2636{
2637 static int incede;
2638
2639 api_cede_notself (aTHX);
2640
2641 ++incede;
2642 while (coro_nready >= incede && api_cede (aTHX))
2643 ;
2644
2645 sv_setsv (sv_activity, &PL_sv_undef);
2646 if (coro_nready >= incede)
2647 {
2648 PUSHMARK (SP);
2649 PUTBACK;
2650 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2651 SPAGAIN;
2652 }
2653
2654 --incede;
2655}
2656 3055
2657 3056
2658MODULE = Coro::State PACKAGE = PerlIO::cede 3057MODULE = Coro::State PACKAGE = PerlIO::cede
2659 3058
2660BOOT: 3059BOOT:
2661 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3060 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2662 3061
3062
2663MODULE = Coro::State PACKAGE = Coro::Semaphore 3063MODULE = Coro::State PACKAGE = Coro::Semaphore
2664 3064
2665SV * 3065SV *
2666new (SV *klass, SV *count_ = 0) 3066new (SV *klass, SV *count = 0)
2667 CODE: 3067 CODE:
2668{ 3068 RETVAL = sv_bless (
2669 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3069 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2670 AV *av = newAV (); 3070 GvSTASH (CvGV (cv))
2671 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3071 );
2672 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3072 OUTPUT:
2673} 3073 RETVAL
3074
3075# helper for Coro::Channel
3076SV *
3077_alloc (int count)
3078 CODE:
3079 RETVAL = coro_waitarray_new (aTHX_ count);
2674 OUTPUT: 3080 OUTPUT:
2675 RETVAL 3081 RETVAL
2676 3082
2677SV * 3083SV *
2678count (SV *self) 3084count (SV *self)
… …
2684void 3090void
2685up (SV *self, int adjust = 1) 3091up (SV *self, int adjust = 1)
2686 ALIAS: 3092 ALIAS:
2687 adjust = 1 3093 adjust = 1
2688 CODE: 3094 CODE:
2689 coro_semaphore_adjust ((AV *)SvRV (self), ix ? adjust : 1); 3095 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2690 3096
2691void 3097void
2692down (SV *self) 3098down (...)
2693 CODE: 3099 CODE:
2694 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3100 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3101
3102void
3103wait (...)
3104 CODE:
3105 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2695 3106
2696void 3107void
2697try (SV *self) 3108try (SV *self)
2698 PPCODE: 3109 PPCODE:
2699{ 3110{
… …
2711 XSRETURN_NO; 3122 XSRETURN_NO;
2712} 3123}
2713 3124
2714void 3125void
2715waiters (SV *self) 3126waiters (SV *self)
2716 CODE: 3127 PPCODE:
2717{ 3128{
2718 AV *av = (AV *)SvRV (self); 3129 AV *av = (AV *)SvRV (self);
3130 int wcount = AvFILLp (av) + 1 - 1;
2719 3131
2720 if (GIMME_V == G_SCALAR) 3132 if (GIMME_V == G_SCALAR)
2721 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3133 XPUSHs (sv_2mortal (newSViv (wcount)));
2722 else 3134 else
2723 { 3135 {
2724 int i; 3136 int i;
2725 EXTEND (SP, AvFILLp (av) + 1 - 1); 3137 EXTEND (SP, wcount);
2726 for (i = 1; i <= AvFILLp (av); ++i) 3138 for (i = 1; i <= wcount; ++i)
2727 PUSHs (newSVsv (AvARRAY (av)[i])); 3139 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2728 } 3140 }
2729} 3141}
2730 3142
3143MODULE = Coro::State PACKAGE = Coro::Signal
3144
3145SV *
3146new (SV *klass)
3147 CODE:
3148 RETVAL = sv_bless (
3149 coro_waitarray_new (aTHX_ 0),
3150 GvSTASH (CvGV (cv))
3151 );
3152 OUTPUT:
3153 RETVAL
3154
3155void
3156wait (...)
3157 CODE:
3158 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3159
3160void
3161broadcast (SV *self)
3162 CODE:
3163{
3164 AV *av = (AV *)SvRV (self);
3165 coro_signal_wake (aTHX_ av, AvFILLp (av));
3166}
3167
3168void
3169send (SV *self)
3170 CODE:
3171{
3172 AV *av = (AV *)SvRV (self);
3173
3174 if (AvFILLp (av))
3175 coro_signal_wake (aTHX_ av, 1);
3176 else
3177 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3178}
3179
3180IV
3181awaited (SV *self)
3182 CODE:
3183 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3184 OUTPUT:
3185 RETVAL
3186
3187
3188MODULE = Coro::State PACKAGE = Coro::AnyEvent
3189
3190BOOT:
3191 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3192
3193void
3194_schedule (...)
3195 CODE:
3196{
3197 static int incede;
3198
3199 api_cede_notself (aTHX);
3200
3201 ++incede;
3202 while (coro_nready >= incede && api_cede (aTHX))
3203 ;
3204
3205 sv_setsv (sv_activity, &PL_sv_undef);
3206 if (coro_nready >= incede)
3207 {
3208 PUSHMARK (SP);
3209 PUTBACK;
3210 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3211 }
3212
3213 --incede;
3214}
3215
3216
3217MODULE = Coro::State PACKAGE = Coro::AIO
3218
3219void
3220_register (char *target, char *proto, SV *req)
3221 CODE:
3222{
3223 CV *req_cv = coro_sv_2cv (req);
3224 /* newXSproto doesn't return the CV on 5.8 */
3225 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3226 sv_setpv ((SV *)slf_cv, proto);
3227 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3228}
3229

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines