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Comparing Coro/Coro/State.xs (file contents):
Revision 1.265 by root, Fri Nov 14 02:42:26 2008 UTC vs.
Revision 1.302 by root, Wed Nov 19 04:48:24 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
… …
116# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
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. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
121#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
122#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
123 131
124#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
125 133
126#if __GNUC__ >= 3 134#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
… …
137#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
138 146
139#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
140 148
141#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
142 151
143#ifdef USE_ITHREADS 152#ifdef USE_ITHREADS
144
145static perl_mutex coro_lock;
146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD 153# if CORO_PTHREAD
149static void *coro_thx; 154static void *coro_thx;
150# endif 155# endif
151
152#else
153
154# define LOCK (void)0
155# define UNLOCK (void)0
156
157#endif 156#endif
158
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
163
164/* helper storage struct for Coro::AIO */
165struct io_state
166{
167 AV *res;
168 int errorno;
169 I32 laststype; /* U16 in 5.10.0 */
170 int laststatval;
171 Stat_t statcache;
172};
173 157
174static 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);
175 163
176static U32 cctx_gen; 164static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 168static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184
185struct transfer_args
186{
187 struct coro *prev, *next;
188};
189 171
190static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 174static SV *rv_diehook;
193static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 196};
215 197
216/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 199typedef struct coro_cctx
200{
218 struct coro_cctx *next; 201 struct coro_cctx *next;
219 202
220 /* the stack */ 203 /* the stack */
221 void *sptr; 204 void *sptr;
222 size_t ssize; 205 size_t ssize;
… …
240 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
242}; 225};
243 226
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 228typedef struct
229{
246 SV *defsv; 230 SV *defsv;
247 AV *defav; 231 AV *defav;
248 SV *errsv; 232 SV *errsv;
249 SV *irsgv; 233 SV *irsgv;
250#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
254 238
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 240
257/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
258struct coro { 242struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 244 coro_cctx *cctx;
261 245
262 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 248 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
265 250
266 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 252 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
270 256
271 /* statistics */ 257 /* statistics */
272 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
273 259
274 /* coro process data */ 260 /* coro process data */
275 int prio; 261 int prio;
276 SV *throw; /* exception to be thrown */ 262 SV *except; /* exception to be thrown */
263 SV *rouse_cb;
277 264
278 /* async_pool */ 265 /* async_pool */
279 SV *saved_deffh; 266 SV *saved_deffh;
280 267
281 /* linked list */ 268 /* linked list */
282 struct coro *next, *prev; 269 struct coro *next, *prev;
283}; 270};
284 271
285typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
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 */
278static struct CoroSLF slf_frame; /* the current slf frame */
287 279
288/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
289 281
290#define PRIO_MAX 3 282#define PRIO_MAX 3
291#define PRIO_HIGH 1 283#define PRIO_HIGH 1
… …
296 288
297/* for Coro.pm */ 289/* for Coro.pm */
298static SV *coro_current; 290static SV *coro_current;
299static SV *coro_readyhook; 291static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
301static int coro_nready;
302static struct coro *coro_first; 293static struct coro *coro_first;
294#define coro_nready coroapi.nready
303 295
304/** lowlevel stuff **********************************************************/ 296/** lowlevel stuff **********************************************************/
305 297
306static SV * 298static SV *
307coro_get_sv (pTHX_ const char *name, int create) 299coro_get_sv (pTHX_ const char *name, int create)
… …
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 385
394 return 0; 386 return 0;
395} 387}
396 388
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext 389#define CORO_MAGIC_type_cv 26
398#define CORO_MAGIC_type_state PERL_MAGIC_ext 390#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 391
400static MGVTBL coro_cv_vtbl = { 392static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 393 0, 0, 0, 0,
402 coro_cv_free 394 coro_cv_free
403}; 395};
404 396
397#define CORO_MAGIC_NN(sv, type) \
398 (expect_true (SvMAGIC (sv)->mg_type == type) \
399 ? SvMAGIC (sv) \
400 : mg_find (sv, type))
401
405#define CORO_MAGIC(sv, type) \ 402#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \ 403 (expect_true (SvMAGIC (sv)) \
407 ? SvMAGIC (sv)->mg_type == type \ 404 ? CORO_MAGIC_NN (sv, type) \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0 405 : 0)
411 406
412#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)
413#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)
414 409
415INLINE struct coro * 410INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro) 411SvSTATE_ (pTHX_ SV *coro)
417{ 412{
418 HV *stash; 413 HV *stash;
… …
435 mg = CORO_MAGIC_state (coro); 430 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr; 431 return (struct coro *)mg->mg_ptr;
437} 432}
438 433
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 434#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
435
436/* faster than SvSTATE, but expects a coroutine hv */
437#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
438#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
440 439
441/* the next two functions merely cache the padlists */ 440/* the next two functions merely cache the padlists */
442static void 441static void
443get_padlist (pTHX_ CV *cv) 442get_padlist (pTHX_ CV *cv)
444{ 443{
… …
511 CvPADLIST (cv) = (AV *)POPs; 510 CvPADLIST (cv) = (AV *)POPs;
512 } 511 }
513 512
514 PUTBACK; 513 PUTBACK;
515 } 514 }
515
516 slf_frame = c->slf_frame;
517 CORO_THROW = c->except;
516} 518}
517 519
518static void 520static void
519save_perl (pTHX_ Coro__State c) 521save_perl (pTHX_ Coro__State c)
520{ 522{
523 c->except = CORO_THROW;
524 c->slf_frame = slf_frame;
525
521 { 526 {
522 dSP; 527 dSP;
523 I32 cxix = cxstack_ix; 528 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 529 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 530 PERL_SI *top_si = PL_curstackinfo;
… …
592 #undef VAR 597 #undef VAR
593 } 598 }
594} 599}
595 600
596/* 601/*
597 * allocate various perl stacks. This is an exact copy 602 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 603 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 604 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 605 * not usually need a lot of stackspace.
601 */ 606 */
602#if CORO_PREFER_PERL_FUNCTIONS 607#if CORO_PREFER_PERL_FUNCTIONS
… …
709#endif 714#endif
710 } 715 }
711 } 716 }
712 717
713 return rss; 718 return rss;
714}
715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we somtimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 int gimme = GIMME_V;
728
729 if (gimme == G_SCALAR)
730 XPUSHs (&PL_sv_undef);
731
732 PUTBACK;
733} 719}
734 720
735/** coroutine stack handling ************************************************/ 721/** coroutine stack handling ************************************************/
736 722
737static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 723static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
823 809
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 811}
826 812
827static void 813static void
814prepare_nop (pTHX_ struct coro_transfer_args *ta)
815{
816 /* kind of mega-hacky, but works */
817 ta->next = ta->prev = (struct coro *)ta;
818}
819
820static int
821slf_check_nop (pTHX_ struct CoroSLF *frame)
822{
823 return 0;
824}
825
826static UNOP coro_setup_op;
827
828static void NOINLINE /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 829coro_setup (pTHX_ struct coro *coro)
829{ 830{
830 /* 831 /*
831 * emulate part of the perl startup here. 832 * emulate part of the perl startup here.
832 */ 833 */
… …
859 { 860 {
860 dSP; 861 dSP;
861 UNOP myop; 862 UNOP myop;
862 863
863 Zero (&myop, 1, UNOP); 864 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 865 myop.op_next = Nullop;
865 myop.op_flags = OPf_WANT_VOID; 866 myop.op_flags = OPf_WANT_VOID;
866 867
867 PUSHMARK (SP); 868 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
869 PUTBACK; 870 PUTBACK;
… …
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN; 873 SPAGAIN;
873 } 874 }
874 875
875 /* 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
876 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 * so we have to emulate entering pp_set_stacklevel here.
878 */ 878 */
879 SSL_HEAD; 879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
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;
880} 892}
881 893
882static void 894static void
883coro_destruct (pTHX_ struct coro *coro) 895coro_destruct (pTHX_ struct coro *coro)
884{ 896{
… …
907 SvREFCNT_dec (GvSV (irsgv)); 919 SvREFCNT_dec (GvSV (irsgv));
908 920
909 SvREFCNT_dec (PL_diehook); 921 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook); 922 SvREFCNT_dec (PL_warnhook);
911 923
924 SvREFCNT_dec (CORO_THROW);
912 SvREFCNT_dec (coro->saved_deffh); 925 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 926 SvREFCNT_dec (coro->rouse_cb);
914 927
915 coro_destruct_stacks (aTHX); 928 coro_destruct_stacks (aTHX);
916} 929}
917 930
918INLINE void 931INLINE void
… …
928static int 941static int
929runops_trace (pTHX) 942runops_trace (pTHX)
930{ 943{
931 COP *oldcop = 0; 944 COP *oldcop = 0;
932 int oldcxix = -2; 945 int oldcxix = -2;
933 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 946 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx; 947 coro_cctx *cctx = coro->cctx;
935 948
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 950 {
938 PERL_ASYNC_CHECK (); 951 PERL_ASYNC_CHECK ();
… …
1047 1060
1048 TAINT_NOT; 1061 TAINT_NOT;
1049 return 0; 1062 return 0;
1050} 1063}
1051 1064
1065static struct coro_cctx *cctx_ssl_cctx;
1066static struct CoroSLF cctx_ssl_frame;
1067
1052static void 1068static void
1053prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1069slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1070{
1055 ta->prev = (struct coro *)cctx; 1071 ta->prev = (struct coro *)cctx_ssl_cctx;
1056 ta->next = 0; 1072 ta->next = 0;
1057} 1073}
1058 1074
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1075static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1076slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */ 1077{
1062/* 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 */
1063static void NOINLINE 1084static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx) 1085cctx_prepare (pTHX_ coro_cctx *cctx)
1065{ 1086{
1066 dSP;
1067 UNOP myop;
1068
1069 PL_top_env = &PL_start_env; 1087 PL_top_env = &PL_start_env;
1070 1088
1071 if (cctx->flags & CC_TRACE) 1089 if (cctx->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1090 PL_runops = runops_trace;
1073 1091
1074 Zero (&myop, 1, UNOP); 1092 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1093 * that can lead to creation of a new cctx */
1076 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));
1077 1096
1078 PUSHMARK (SP); 1097 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1098 cctx_ssl_cctx = cctx;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1099 cctx_ssl_frame = slf_frame;
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1100
1082 PUTBACK; 1101 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PL_op = (OP *)&myop; 1102 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1103}
1087 1104
1088/* 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 */
1089INLINE void 1106INLINE void
1090transfer_tail (pTHX) 1107transfer_tail (pTHX)
1091{ 1108{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX); 1109 free_coro_mortal (aTHX);
1097 UNLOCK;
1098
1099 if (expect_false (next->throw))
1100 {
1101 SV *exception = sv_2mortal (next->throw);
1102
1103 next->throw = 0;
1104 sv_setsv (ERRSV, exception);
1105 croak (0);
1106 }
1107} 1110}
1108 1111
1109/* 1112/*
1110 * this is a _very_ stripped down perl interpreter ;) 1113 * this is a _very_ stripped down perl interpreter ;)
1111 */ 1114 */
… …
1118# endif 1121# endif
1119#endif 1122#endif
1120 { 1123 {
1121 dTHX; 1124 dTHX;
1122 1125
1123 /* we are the alternative tail to pp_set_stacklevel */ 1126 /* normally we would need to skip the entersub here */
1124 /* so do the same things here */ 1127 /* not doing so will re-execute it, which is exactly what we want */
1125 SSL_TAIL;
1126
1127 /* we now skip the op that did lead to transfer() */
1128 PL_op = PL_op->op_next; 1128 /* PL_nop = PL_nop->op_next */
1129 1129
1130 /* inject a fake subroutine call to cctx_init */ 1130 /* inject a fake subroutine call to cctx_init */
1131 cctx_prepare (aTHX_ (coro_cctx *)arg); 1131 cctx_prepare (aTHX_ (coro_cctx *)arg);
1132 1132
1133 /* cctx_run is the alternative tail of transfer() */ 1133 /* cctx_run is the alternative tail of transfer() */
… …
1294/** coroutine switching *****************************************************/ 1294/** coroutine switching *****************************************************/
1295 1295
1296static void 1296static void
1297transfer_check (pTHX_ struct coro *prev, struct coro *next) 1297transfer_check (pTHX_ struct coro *prev, struct coro *next)
1298{ 1298{
1299 /* TODO: throwing up here is considered harmful */
1300
1299 if (expect_true (prev != next)) 1301 if (expect_true (prev != next))
1300 { 1302 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1303 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302 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,");
1303 1305
1304 if (expect_false (next->flags & CF_RUNNING)) 1306 if (expect_false (next->flags & CF_RUNNING))
1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1307 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1306 1308
1307 if (expect_false (next->flags & CF_DESTROYED)) 1309 if (expect_false (next->flags & CF_DESTROYED))
1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1310 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1309 1311
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1312#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1313 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1314 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif 1315#endif
1314 } 1316 }
1315} 1317}
1316 1318
1317/* always use the TRANSFER macro */ 1319/* always use the TRANSFER macro */
1318static void NOINLINE 1320static void NOINLINE /* noinline so we have a fixed stackframe */
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1321transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1322{
1321 dSTACKLEVEL; 1323 dSTACKLEVEL;
1322 1324
1323 /* sometimes transfer is only called to set idle_sp */ 1325 /* sometimes transfer is only called to set idle_sp */
… …
1338 prev->flags |= CF_RUNNING; 1340 prev->flags |= CF_RUNNING;
1339 } 1341 }
1340 1342
1341 prev->flags &= ~CF_RUNNING; 1343 prev->flags &= ~CF_RUNNING;
1342 next->flags |= CF_RUNNING; 1344 next->flags |= CF_RUNNING;
1343
1344 LOCK;
1345 1345
1346 /* first get rid of the old state */ 1346 /* first get rid of the old state */
1347 save_perl (aTHX_ prev); 1347 save_perl (aTHX_ prev);
1348 1348
1349 if (expect_false (next->flags & CF_NEW)) 1349 if (expect_false (next->flags & CF_NEW))
… …
1363 prev__cctx->idle_sp == STACKLEVEL 1363 prev__cctx->idle_sp == STACKLEVEL
1364 && !(prev__cctx->flags & CC_TRACE) 1364 && !(prev__cctx->flags & CC_TRACE)
1365 && !force_cctx 1365 && !force_cctx
1366 )) 1366 ))
1367 { 1367 {
1368 /* 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 */
1369 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1369 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1370 1370
1371 prev->cctx = 0; 1371 prev->cctx = 0;
1372 1372
1373 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1373 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
… …
1381 1381
1382 ++next->usecount; 1382 ++next->usecount;
1383 1383
1384 if (expect_true (!next->cctx)) 1384 if (expect_true (!next->cctx))
1385 next->cctx = cctx_get (aTHX); 1385 next->cctx = cctx_get (aTHX);
1386
1387 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1388 transfer_next = next;
1389 1386
1390 if (expect_false (prev__cctx != next->cctx)) 1387 if (expect_false (prev__cctx != next->cctx))
1391 { 1388 {
1392 prev__cctx->top_env = PL_top_env; 1389 prev__cctx->top_env = PL_top_env;
1393 PL_top_env = next->cctx->top_env; 1390 PL_top_env = next->cctx->top_env;
… …
1407coro_state_destroy (pTHX_ struct coro *coro) 1404coro_state_destroy (pTHX_ struct coro *coro)
1408{ 1405{
1409 if (coro->flags & CF_DESTROYED) 1406 if (coro->flags & CF_DESTROYED)
1410 return 0; 1407 return 0;
1411 1408
1409 if (coro->on_destroy)
1410 coro->on_destroy (aTHX_ coro);
1411
1412 coro->flags |= CF_DESTROYED; 1412 coro->flags |= CF_DESTROYED;
1413 1413
1414 if (coro->flags & CF_READY) 1414 if (coro->flags & CF_READY)
1415 { 1415 {
1416 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1416 /* reduce nready, as destroying a ready coro effectively unreadies it */
1417 /* alternative: look through all ready queues and remove the coro */ 1417 /* alternative: look through all ready queues and remove the coro */
1418 LOCK;
1419 --coro_nready; 1418 --coro_nready;
1420 UNLOCK;
1421 } 1419 }
1422 else 1420 else
1423 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1421 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1424 1422
1425 if (coro->mainstack && coro->mainstack != main_mainstack) 1423 if (coro->mainstack && coro->mainstack != main_mainstack)
1426 { 1424 {
1427 struct coro temp; 1425 struct coro temp;
1428 1426
1429 if (coro->flags & CF_RUNNING) 1427 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1430 croak ("FATAL: tried to destroy currently running coroutine");
1431 1428
1432 save_perl (aTHX_ &temp); 1429 save_perl (aTHX_ &temp);
1433 load_perl (aTHX_ coro); 1430 load_perl (aTHX_ coro);
1434 1431
1435 coro_destruct (aTHX_ coro); 1432 coro_destruct (aTHX_ coro);
… …
1486# define MGf_DUP 0 1483# define MGf_DUP 0
1487#endif 1484#endif
1488}; 1485};
1489 1486
1490static void 1487static void
1491prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1488prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1492{ 1489{
1493 ta->prev = SvSTATE (prev_sv); 1490 ta->prev = SvSTATE (prev_sv);
1494 ta->next = SvSTATE (next_sv); 1491 ta->next = SvSTATE (next_sv);
1495 TRANSFER_CHECK (*ta); 1492 TRANSFER_CHECK (*ta);
1496} 1493}
1497 1494
1498static void 1495static void
1499api_transfer (SV *prev_sv, SV *next_sv) 1496api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1500{ 1497{
1501 dTHX;
1502 struct transfer_args ta; 1498 struct coro_transfer_args ta;
1503 1499
1504 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1500 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1505 TRANSFER (ta, 1); 1501 TRANSFER (ta, 1);
1506} 1502}
1507 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 */
1512static SV *
1513gensub (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
1508/** Coro ********************************************************************/ 1527/** Coro ********************************************************************/
1509 1528
1510static void 1529INLINE void
1511coro_enq (pTHX_ SV *coro_sv) 1530coro_enq (pTHX_ struct coro *coro)
1512{ 1531{
1513 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1532 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1514} 1533}
1515 1534
1516static SV * 1535INLINE SV *
1517coro_deq (pTHX) 1536coro_deq (pTHX)
1518{ 1537{
1519 int prio; 1538 int prio;
1520 1539
1521 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1540 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1524 1543
1525 return 0; 1544 return 0;
1526} 1545}
1527 1546
1528static int 1547static int
1529api_ready (SV *coro_sv) 1548api_ready (pTHX_ SV *coro_sv)
1530{ 1549{
1531 dTHX;
1532 struct coro *coro; 1550 struct coro *coro;
1533 SV *sv_hook; 1551 SV *sv_hook;
1534 void (*xs_hook)(void); 1552 void (*xs_hook)(void);
1535 1553
1536 if (SvROK (coro_sv)) 1554 if (SvROK (coro_sv))
… …
1541 if (coro->flags & CF_READY) 1559 if (coro->flags & CF_READY)
1542 return 0; 1560 return 0;
1543 1561
1544 coro->flags |= CF_READY; 1562 coro->flags |= CF_READY;
1545 1563
1546 LOCK;
1547
1548 sv_hook = coro_nready ? 0 : coro_readyhook; 1564 sv_hook = coro_nready ? 0 : coro_readyhook;
1549 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1565 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1550 1566
1551 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1567 coro_enq (aTHX_ coro);
1552 ++coro_nready; 1568 ++coro_nready;
1553 1569
1554 UNLOCK;
1555
1556 if (sv_hook) 1570 if (sv_hook)
1557 { 1571 {
1558 dSP; 1572 dSP;
1559 1573
1560 ENTER; 1574 ENTER;
1561 SAVETMPS; 1575 SAVETMPS;
1562 1576
1563 PUSHMARK (SP); 1577 PUSHMARK (SP);
1564 PUTBACK; 1578 PUTBACK;
1565 call_sv (sv_hook, G_DISCARD); 1579 call_sv (sv_hook, G_VOID | G_DISCARD);
1566 SPAGAIN;
1567 1580
1568 FREETMPS; 1581 FREETMPS;
1569 LEAVE; 1582 LEAVE;
1570 } 1583 }
1571 1584
… …
1574 1587
1575 return 1; 1588 return 1;
1576} 1589}
1577 1590
1578static int 1591static int
1579api_is_ready (SV *coro_sv) 1592api_is_ready (pTHX_ SV *coro_sv)
1580{ 1593{
1581 dTHX;
1582
1583 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1594 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1584} 1595}
1585 1596
1586INLINE void 1597INLINE void
1587prepare_schedule (pTHX_ struct transfer_args *ta) 1598prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1588{ 1599{
1589 SV *prev_sv, *next_sv; 1600 SV *prev_sv, *next_sv;
1590 1601
1591 for (;;) 1602 for (;;)
1592 { 1603 {
1593 LOCK;
1594 next_sv = coro_deq (aTHX); 1604 next_sv = coro_deq (aTHX);
1595 1605
1596 /* nothing to schedule: call the idle handler */ 1606 /* nothing to schedule: call the idle handler */
1597 if (expect_false (!next_sv)) 1607 if (expect_false (!next_sv))
1598 { 1608 {
1599 dSP; 1609 dSP;
1600 UNLOCK;
1601 1610
1602 ENTER; 1611 ENTER;
1603 SAVETMPS; 1612 SAVETMPS;
1604 1613
1605 PUSHMARK (SP); 1614 PUSHMARK (SP);
1606 PUTBACK; 1615 PUTBACK;
1607 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1616 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1608 SPAGAIN;
1609 1617
1610 FREETMPS; 1618 FREETMPS;
1611 LEAVE; 1619 LEAVE;
1612 continue; 1620 continue;
1613 } 1621 }
1614 1622
1615 ta->next = SvSTATE (next_sv); 1623 ta->next = SvSTATE_hv (next_sv);
1616 1624
1617 /* cannot transfer to destroyed coros, skip and look for next */ 1625 /* cannot transfer to destroyed coros, skip and look for next */
1618 if (expect_false (ta->next->flags & CF_DESTROYED)) 1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1619 { 1627 {
1620 UNLOCK;
1621 SvREFCNT_dec (next_sv); 1628 SvREFCNT_dec (next_sv);
1622 /* coro_nready has already been taken care of by destroy */ 1629 /* coro_nready has already been taken care of by destroy */
1623 continue; 1630 continue;
1624 } 1631 }
1625 1632
1626 --coro_nready; 1633 --coro_nready;
1627 UNLOCK;
1628 break; 1634 break;
1629 } 1635 }
1630 1636
1631 /* free this only after the transfer */ 1637 /* free this only after the transfer */
1632 prev_sv = SvRV (coro_current); 1638 prev_sv = SvRV (coro_current);
1633 ta->prev = SvSTATE (prev_sv); 1639 ta->prev = SvSTATE_hv (prev_sv);
1634 TRANSFER_CHECK (*ta); 1640 TRANSFER_CHECK (*ta);
1635 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1641 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1636 ta->next->flags &= ~CF_READY; 1642 ta->next->flags &= ~CF_READY;
1637 SvRV_set (coro_current, next_sv); 1643 SvRV_set (coro_current, next_sv);
1638 1644
1639 LOCK;
1640 free_coro_mortal (aTHX); 1645 free_coro_mortal (aTHX);
1641 coro_mortal = prev_sv; 1646 coro_mortal = prev_sv;
1642 UNLOCK;
1643} 1647}
1644 1648
1645INLINE void 1649INLINE void
1646prepare_cede (pTHX_ struct transfer_args *ta) 1650prepare_cede (pTHX_ struct coro_transfer_args *ta)
1647{ 1651{
1648 api_ready (coro_current); 1652 api_ready (aTHX_ coro_current);
1649 prepare_schedule (aTHX_ ta); 1653 prepare_schedule (aTHX_ ta);
1650} 1654}
1651 1655
1656INLINE void
1657prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1658{
1659 SV *prev = SvRV (coro_current);
1660
1661 if (coro_nready)
1662 {
1663 prepare_schedule (aTHX_ ta);
1664 api_ready (aTHX_ prev);
1665 }
1666 else
1667 prepare_nop (aTHX_ ta);
1668}
1669
1670static void
1671api_schedule (pTHX)
1672{
1673 struct coro_transfer_args ta;
1674
1675 prepare_schedule (aTHX_ &ta);
1676 TRANSFER (ta, 1);
1677}
1678
1652static int 1679static int
1653prepare_cede_notself (pTHX_ struct transfer_args *ta) 1680api_cede (pTHX)
1654{ 1681{
1655 if (coro_nready) 1682 struct coro_transfer_args ta;
1656 { 1683
1657 SV *prev = SvRV (coro_current);
1658 prepare_schedule (aTHX_ ta); 1684 prepare_cede (aTHX_ &ta);
1659 api_ready (prev); 1685
1686 if (expect_true (ta.prev != ta.next))
1687 {
1688 TRANSFER (ta, 1);
1660 return 1; 1689 return 1;
1661 } 1690 }
1662 else 1691 else
1663 return 0; 1692 return 0;
1664} 1693}
1665 1694
1666static void
1667api_schedule (void)
1668{
1669 dTHX;
1670 struct transfer_args ta;
1671
1672 prepare_schedule (aTHX_ &ta);
1673 TRANSFER (ta, 1);
1674}
1675
1676static int 1695static int
1677api_cede (void) 1696api_cede_notself (pTHX)
1678{ 1697{
1679 dTHX; 1698 if (coro_nready)
1699 {
1680 struct transfer_args ta; 1700 struct coro_transfer_args ta;
1681 1701
1682 prepare_cede (aTHX_ &ta); 1702 prepare_cede_notself (aTHX_ &ta);
1683
1684 if (expect_true (ta.prev != ta.next))
1685 {
1686 TRANSFER (ta, 1); 1703 TRANSFER (ta, 1);
1687 return 1; 1704 return 1;
1688 } 1705 }
1689 else 1706 else
1690 return 0; 1707 return 0;
1691} 1708}
1692 1709
1693static int 1710static void
1694api_cede_notself (void)
1695{
1696 dTHX;
1697 struct transfer_args ta;
1698
1699 if (prepare_cede_notself (aTHX_ &ta))
1700 {
1701 TRANSFER (ta, 1);
1702 return 1;
1703 }
1704 else
1705 return 0;
1706}
1707
1708static void
1709api_trace (SV *coro_sv, int flags) 1711api_trace (pTHX_ SV *coro_sv, int flags)
1710{ 1712{
1711 dTHX;
1712 struct coro *coro = SvSTATE (coro_sv); 1713 struct coro *coro = SvSTATE (coro_sv);
1713 1714
1714 if (flags & CC_TRACE) 1715 if (flags & CC_TRACE)
1715 { 1716 {
1716 if (!coro->cctx) 1717 if (!coro->cctx)
1717 coro->cctx = cctx_new_run (); 1718 coro->cctx = cctx_new_run ();
1718 else if (!(coro->cctx->flags & CC_TRACE)) 1719 else if (!(coro->cctx->flags & CC_TRACE))
1719 croak ("cannot enable tracing on coroutine with custom stack"); 1720 croak ("cannot enable tracing on coroutine with custom stack,");
1720 1721
1721 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1722 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1722 } 1723 }
1723 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1724 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1724 { 1725 {
… …
1729 else 1730 else
1730 coro->slot->runops = RUNOPS_DEFAULT; 1731 coro->slot->runops = RUNOPS_DEFAULT;
1731 } 1732 }
1732} 1733}
1733 1734
1734#if 0 1735/*****************************************************************************/
1736/* rouse callback */
1737
1738#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1739
1740static void
1741coro_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 while (items--)
1758 av_store (av, items, SvREFCNT_inc_NN (ST (items)));
1759 }
1760
1761 XSRETURN_EMPTY;
1762}
1763
1735static int 1764static int
1736coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1765slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1737{ 1766{
1738 AV *padlist; 1767 SV *data = (SV *)frame->data;
1739 AV *av = (AV *)mg->mg_obj; 1768
1769 if (CORO_THROW)
1770 return 0;
1740 1771
1741 abort (); 1772 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1773 return 1;
1774
1775 /* now push all results on the stack */
1776 {
1777 dSP;
1778 AV *av = (AV *)SvRV (data);
1779 int i;
1780
1781 EXTEND (SP, AvFILLp (av) + 1);
1782 for (i = 0; i <= AvFILLp (av); ++i)
1783 PUSHs (AvARRAY (av)[i]);
1784
1785 PUTBACK;
1786 }
1742 1787
1743 return 0; 1788 return 0;
1744} 1789}
1745 1790
1746static MGVTBL coro_gensub_vtbl = { 1791static void
1747 0, 0, 0, 0, 1792slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1748 coro_gensub_free 1793{
1749}; 1794 SV *cb;
1750#endif 1795
1796 if (items)
1797 cb = arg [0];
1798 else
1799 {
1800 struct coro *coro = SvSTATE_current;
1801
1802 if (!coro->rouse_cb)
1803 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1804
1805 cb = sv_2mortal (coro->rouse_cb);
1806 coro->rouse_cb = 0;
1807 }
1808
1809 if (!SvROK (cb)
1810 || SvTYPE (SvRV (cb)) != SVt_PVCV
1811 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1812 croak ("Coro::rouse_wait called with illegal callback argument,");
1813
1814 {
1815 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1816 SV *data = (SV *)GENSUB_ARG;
1817
1818 frame->data = (void *)data;
1819 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1820 frame->check = slf_check_rouse_wait;
1821 }
1822}
1823
1824static SV *
1825coro_new_rouse_cb (pTHX)
1826{
1827 HV *hv = (HV *)SvRV (coro_current);
1828 struct coro *coro = SvSTATE_hv (hv);
1829 SV *data = newRV_inc ((SV *)hv);
1830 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1831
1832 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1833
1834 SvREFCNT_dec (coro->rouse_cb);
1835 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1836
1837 return cb;
1838}
1839
1840/*****************************************************************************/
1841/* schedule-like-function opcode (SLF) */
1842
1843static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1844static const CV *slf_cv;
1845static SV **slf_argv;
1846static int slf_argc, slf_arga; /* count, allocated */
1847static I32 slf_ax; /* top of stack, for restore */
1848
1849/* this restores the stack in the case we patched the entersub, to */
1850/* recreate the stack frame as perl will on following calls */
1851/* since entersub cleared the stack */
1852static OP *
1853pp_restore (pTHX)
1854{
1855 int i;
1856 SV **SP = PL_stack_base + slf_ax;
1857
1858 PUSHMARK (SP);
1859
1860 EXTEND (SP, slf_argc + 1);
1861
1862 for (i = 0; i < slf_argc; ++i)
1863 PUSHs (sv_2mortal (slf_argv [i]));
1864
1865 PUSHs ((SV *)CvGV (slf_cv));
1866
1867 RETURNOP (slf_restore.op_first);
1868}
1869
1870static void
1871slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1872{
1873 SV **arg = (SV **)slf_frame.data;
1874
1875 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1876}
1877
1878static void
1879slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1880{
1881 if (items != 2)
1882 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1883
1884 frame->prepare = slf_prepare_transfer;
1885 frame->check = slf_check_nop;
1886 frame->data = (void *)arg; /* let's hope it will stay valid */
1887}
1888
1889static void
1890slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1891{
1892 frame->prepare = prepare_schedule;
1893 frame->check = slf_check_nop;
1894}
1895
1896static void
1897slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1898{
1899 frame->prepare = prepare_cede;
1900 frame->check = slf_check_nop;
1901}
1902
1903static void
1904slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1905{
1906 frame->prepare = prepare_cede_notself;
1907 frame->check = slf_check_nop;
1908}
1909
1910/*
1911 * these not obviously related functions are all rolled into one
1912 * function to increase chances that they all will call transfer with the same
1913 * stack offset
1914 * SLF stands for "schedule-like-function".
1915 */
1916static OP *
1917pp_slf (pTHX)
1918{
1919 I32 checkmark; /* mark SP to see how many elements check has pushed */
1920
1921 /* set up the slf frame, unless it has already been set-up */
1922 /* the latter happens when a new coro has been started */
1923 /* or when a new cctx was attached to an existing coroutine */
1924 if (expect_true (!slf_frame.prepare))
1925 {
1926 /* first iteration */
1927 dSP;
1928 SV **arg = PL_stack_base + TOPMARK + 1;
1929 int items = SP - arg; /* args without function object */
1930 SV *gv = *sp;
1931
1932 /* do a quick consistency check on the "function" object, and if it isn't */
1933 /* for us, divert to the real entersub */
1934 if (SvTYPE (gv) != SVt_PVGV
1935 || !GvCV (gv)
1936 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1937 return PL_ppaddr[OP_ENTERSUB](aTHX);
1938
1939 if (!(PL_op->op_flags & OPf_STACKED))
1940 {
1941 /* ampersand-form of call, use @_ instead of stack */
1942 AV *av = GvAV (PL_defgv);
1943 arg = AvARRAY (av);
1944 items = AvFILLp (av) + 1;
1945 }
1946
1947 /* now call the init function, which needs to set up slf_frame */
1948 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1949 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1950
1951 /* pop args */
1952 SP = PL_stack_base + POPMARK;
1953
1954 PUTBACK;
1955 }
1956
1957 /* now that we have a slf_frame, interpret it! */
1958 /* we use a callback system not to make the code needlessly */
1959 /* complicated, but so we can run multiple perl coros from one cctx */
1960
1961 do
1962 {
1963 struct coro_transfer_args ta;
1964
1965 slf_frame.prepare (aTHX_ &ta);
1966 TRANSFER (ta, 0);
1967
1968 checkmark = PL_stack_sp - PL_stack_base;
1969 }
1970 while (slf_frame.check (aTHX_ &slf_frame));
1971
1972 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1973
1974 /* exception handling */
1975 if (expect_false (CORO_THROW))
1976 {
1977 SV *exception = sv_2mortal (CORO_THROW);
1978
1979 CORO_THROW = 0;
1980 sv_setsv (ERRSV, exception);
1981 croak (0);
1982 }
1983
1984 /* return value handling - mostly like entersub */
1985 /* make sure we put something on the stack in scalar context */
1986 if (GIMME_V == G_SCALAR)
1987 {
1988 dSP;
1989 SV **bot = PL_stack_base + checkmark;
1990
1991 if (sp == bot) /* too few, push undef */
1992 bot [1] = &PL_sv_undef;
1993 else if (sp != bot + 1) /* too many, take last one */
1994 bot [1] = *sp;
1995
1996 SP = bot + 1;
1997
1998 PUTBACK;
1999 }
2000
2001 return NORMAL;
2002}
2003
2004static void
2005api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2006{
2007 int i;
2008 SV **arg = PL_stack_base + ax;
2009 int items = PL_stack_sp - arg + 1;
2010
2011 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2012
2013 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2014 && PL_op->op_ppaddr != pp_slf)
2015 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2016
2017 CvFLAGS (cv) |= CVf_SLF;
2018 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2019 slf_cv = cv;
2020
2021 /* we patch the op, and then re-run the whole call */
2022 /* we have to put the same argument on the stack for this to work */
2023 /* and this will be done by pp_restore */
2024 slf_restore.op_next = (OP *)&slf_restore;
2025 slf_restore.op_type = OP_CUSTOM;
2026 slf_restore.op_ppaddr = pp_restore;
2027 slf_restore.op_first = PL_op;
2028
2029 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2030
2031 if (PL_op->op_flags & OPf_STACKED)
2032 {
2033 if (items > slf_arga)
2034 {
2035 slf_arga = items;
2036 free (slf_argv);
2037 slf_argv = malloc (slf_arga * sizeof (SV *));
2038 }
2039
2040 slf_argc = items;
2041
2042 for (i = 0; i < items; ++i)
2043 slf_argv [i] = SvREFCNT_inc (arg [i]);
2044 }
2045 else
2046 slf_argc = 0;
2047
2048 PL_op->op_ppaddr = pp_slf;
2049 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2050
2051 PL_op = (OP *)&slf_restore;
2052}
1751 2053
1752/*****************************************************************************/ 2054/*****************************************************************************/
1753/* PerlIO::cede */ 2055/* PerlIO::cede */
1754 2056
1755typedef struct 2057typedef struct
… …
1783 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2085 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1784 double now = nvtime (); 2086 double now = nvtime ();
1785 2087
1786 if (now >= self->next) 2088 if (now >= self->next)
1787 { 2089 {
1788 api_cede (); 2090 api_cede (aTHX);
1789 self->next = now + self->every; 2091 self->next = now + self->every;
1790 } 2092 }
1791 2093
1792 return PerlIOBuf_flush (aTHX_ f); 2094 return PerlIOBuf_flush (aTHX_ f);
1793} 2095}
… …
1823 PerlIOBuf_get_cnt, 2125 PerlIOBuf_get_cnt,
1824 PerlIOBuf_set_ptrcnt, 2126 PerlIOBuf_set_ptrcnt,
1825}; 2127};
1826 2128
1827/*****************************************************************************/ 2129/*****************************************************************************/
2130/* Coro::Semaphore & Coro::Signal */
1828 2131
1829static const CV *ssl_cv; /* for quick consistency check */
1830
1831static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1832static SV *ssl_arg0;
1833static SV *ssl_arg1;
1834
1835/* this restores the stack in the case we patched the entersub, to */
1836/* recreate the stack frame as perl will on following calls */
1837/* since entersub cleared the stack */
1838static OP * 2132static SV *
1839pp_restore (pTHX) 2133coro_waitarray_new (pTHX_ int count)
1840{ 2134{
2135 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2136 AV *av = newAV ();
2137 SV **ary;
2138
2139 /* unfortunately, building manually saves memory */
2140 Newx (ary, 2, SV *);
2141 AvALLOC (av) = ary;
2142 AvARRAY (av) = ary;
2143 AvMAX (av) = 1;
2144 AvFILLp (av) = 0;
2145 ary [0] = newSViv (count);
2146
2147 return newRV_noinc ((SV *)av);
2148}
2149
2150/* semaphore */
2151
2152static void
2153coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2154{
2155 SV *count_sv = AvARRAY (av)[0];
2156 IV count = SvIVX (count_sv);
2157
2158 count += adjust;
2159 SvIVX (count_sv) = count;
2160
2161 /* now wake up as many waiters as are expected to lock */
2162 while (count > 0 && AvFILLp (av) > 0)
2163 {
2164 SV *cb;
2165
2166 /* swap first two elements so we can shift a waiter */
2167 AvARRAY (av)[0] = AvARRAY (av)[1];
2168 AvARRAY (av)[1] = count_sv;
2169 cb = av_shift (av);
2170
2171 if (SvOBJECT (cb))
2172 api_ready (aTHX_ cb);
2173 else
2174 croak ("callbacks not yet supported");
2175
2176 SvREFCNT_dec (cb);
2177
2178 --count;
2179 }
2180}
2181
2182static void
2183coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2184{
2185 /* call $sem->adjust (0) to possibly wake up some other waiters */
2186 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2187}
2188
2189static int
2190slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2191{
2192 AV *av = (AV *)frame->data;
2193 SV *count_sv = AvARRAY (av)[0];
2194
2195 /* if we are about to throw, don't actually acquire the lock, just throw */
2196 if (CORO_THROW)
2197 return 0;
2198 else if (SvIVX (count_sv) > 0)
2199 {
2200 SvSTATE_current->on_destroy = 0;
2201
2202 if (acquire)
2203 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2204 else
2205 coro_semaphore_adjust (aTHX_ av, 0);
2206
2207 return 0;
2208 }
2209 else
2210 {
2211 int i;
2212 /* if we were woken up but can't down, we look through the whole */
2213 /* waiters list and only add us if we aren't in there already */
2214 /* this avoids some degenerate memory usage cases */
2215
2216 for (i = 1; i <= AvFILLp (av); ++i)
2217 if (AvARRAY (av)[i] == SvRV (coro_current))
2218 return 1;
2219
2220 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2221 return 1;
2222 }
2223}
2224
2225static int
2226slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2227{
2228 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2229}
2230
2231static int
2232slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2233{
2234 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2235}
2236
2237static void
2238slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2239{
2240 AV *av = (AV *)SvRV (arg [0]);
2241
2242 if (SvIVX (AvARRAY (av)[0]) > 0)
2243 {
2244 frame->data = (void *)av;
2245 frame->prepare = prepare_nop;
2246 }
2247 else
2248 {
2249 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2250
2251 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2252 frame->prepare = prepare_schedule;
2253
2254 /* to avoid race conditions when a woken-up coro gets terminated */
2255 /* we arrange for a temporary on_destroy that calls adjust (0) */
2256 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2257 }
2258}
2259
2260static void
2261slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2262{
2263 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2264 frame->check = slf_check_semaphore_down;
2265}
2266
2267static void
2268slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2269{
2270 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2271 frame->check = slf_check_semaphore_wait;
2272}
2273
2274/* signal */
2275
2276static void
2277coro_signal_wake (pTHX_ AV *av, int count)
2278{
2279 SvIVX (AvARRAY (av)[0]) = 0;
2280
2281 /* now signal count waiters */
2282 while (count > 0 && AvFILLp (av) > 0)
2283 {
2284 SV *cb;
2285
2286 /* swap first two elements so we can shift a waiter */
2287 cb = AvARRAY (av)[0];
2288 AvARRAY (av)[0] = AvARRAY (av)[1];
2289 AvARRAY (av)[1] = cb;
2290
2291 cb = av_shift (av);
2292
2293 api_ready (aTHX_ cb);
2294 sv_setiv (cb, 0); /* signal waiter */
2295 SvREFCNT_dec (cb);
2296
2297 --count;
2298 }
2299}
2300
2301static int
2302slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2303{
2304 /* if we are about to throw, also stop waiting */
2305 return SvROK ((SV *)frame->data) && !CORO_THROW;
2306}
2307
2308static void
2309slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2310{
2311 AV *av = (AV *)SvRV (arg [0]);
2312
2313 if (SvIVX (AvARRAY (av)[0]))
2314 {
2315 SvIVX (AvARRAY (av)[0]) = 0;
2316 frame->prepare = prepare_nop;
2317 frame->check = slf_check_nop;
2318 }
2319 else
2320 {
2321 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2322
2323 av_push (av, waiter);
2324
2325 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2326 frame->prepare = prepare_schedule;
2327 frame->check = slf_check_signal_wait;
2328 }
2329}
2330
2331/*****************************************************************************/
2332/* Coro::AIO */
2333
2334#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2335
2336/* helper storage struct */
2337struct io_state
2338{
2339 int errorno;
2340 I32 laststype; /* U16 in 5.10.0 */
2341 int laststatval;
2342 Stat_t statcache;
2343};
2344
2345static void
2346coro_aio_callback (pTHX_ CV *cv)
2347{
2348 dXSARGS;
2349 AV *state = (AV *)GENSUB_ARG;
2350 SV *coro = av_pop (state);
2351 SV *data_sv = newSV (sizeof (struct io_state));
2352
2353 av_extend (state, items);
2354
2355 sv_upgrade (data_sv, SVt_PV);
2356 SvCUR_set (data_sv, sizeof (struct io_state));
2357 SvPOK_only (data_sv);
2358
2359 {
2360 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2361
2362 data->errorno = errno;
2363 data->laststype = PL_laststype;
2364 data->laststatval = PL_laststatval;
2365 data->statcache = PL_statcache;
2366 }
2367
2368 /* now build the result vector out of all the parameters and the data_sv */
2369 {
2370 int i;
2371
2372 for (i = 0; i < items; ++i)
2373 av_push (state, SvREFCNT_inc_NN (ST (i)));
2374 }
2375
2376 av_push (state, data_sv);
2377
2378 api_ready (aTHX_ coro);
2379 SvREFCNT_dec (coro);
2380 SvREFCNT_dec ((AV *)state);
2381}
2382
2383static int
2384slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2385{
2386 AV *state = (AV *)frame->data;
2387
2388 /* if we are about to throw, return early */
2389 /* this does not cancel the aio request, but at least */
2390 /* it quickly returns */
2391 if (CORO_THROW)
2392 return 0;
2393
2394 /* one element that is an RV? repeat! */
2395 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2396 return 1;
2397
2398 /* restore status */
2399 {
2400 SV *data_sv = av_pop (state);
2401 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2402
2403 errno = data->errorno;
2404 PL_laststype = data->laststype;
2405 PL_laststatval = data->laststatval;
2406 PL_statcache = data->statcache;
2407
2408 SvREFCNT_dec (data_sv);
2409 }
2410
2411 /* push result values */
2412 {
1841 dSP; 2413 dSP;
2414 int i;
1842 2415
2416 EXTEND (SP, AvFILLp (state) + 1);
2417 for (i = 0; i <= AvFILLp (state); ++i)
2418 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2419
2420 PUTBACK;
2421 }
2422
2423 return 0;
2424}
2425
2426static void
2427slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2428{
2429 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2430 SV *coro_hv = SvRV (coro_current);
2431 struct coro *coro = SvSTATE_hv (coro_hv);
2432
2433 /* put our coroutine id on the state arg */
2434 av_push (state, SvREFCNT_inc_NN (coro_hv));
2435
2436 /* first see whether we have a non-zero priority and set it as AIO prio */
2437 if (coro->prio)
2438 {
2439 dSP;
2440
2441 static SV *prio_cv;
2442 static SV *prio_sv;
2443
2444 if (expect_false (!prio_cv))
2445 {
2446 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2447 prio_sv = newSViv (0);
2448 }
2449
2450 PUSHMARK (SP);
2451 sv_setiv (prio_sv, coro->prio);
2452 XPUSHs (prio_sv);
2453
2454 PUTBACK;
2455 call_sv (prio_cv, G_VOID | G_DISCARD);
2456 }
2457
2458 /* now call the original request */
2459 {
2460 dSP;
2461 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2462 int i;
2463
1843 PUSHMARK (SP); 2464 PUSHMARK (SP);
1844 2465
1845 EXTEND (SP, 3); 2466 /* first push all args to the stack */
1846 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2467 EXTEND (SP, items + 1);
1847 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1848 PUSHs ((SV *)CvGV (ssl_cv));
1849 2468
1850 RETURNOP (ssl_restore.op_first); 2469 for (i = 0; i < items; ++i)
1851} 2470 PUSHs (arg [i]);
1852 2471
1853/* declare prototype */ 2472 /* now push the callback closure */
1854XS(XS_Coro__State__set_stacklevel); 2473 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1855 2474
1856static OP * 2475 /* now call the AIO function - we assume our request is uncancelable */
1857pp_set_stacklevel (pTHX)
1858{
1859 dSP;
1860 struct transfer_args ta;
1861 SV **arg = PL_stack_base + TOPMARK + 1;
1862 int items = SP - arg; /* args without function object */
1863
1864 /* do a quick consistency check on the "function" object, and if it isn't */
1865 /* for us, divert to the real entersub */
1866 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1867 return PL_ppaddr[OP_ENTERSUB](aTHX);
1868
1869 /* pop args */
1870 SP = PL_stack_base + POPMARK;
1871
1872 if (!(PL_op->op_flags & OPf_STACKED))
1873 {
1874 /* ampersand-form of call, use @_ instead of stack */
1875 AV *av = GvAV (PL_defgv);
1876 arg = AvARRAY (av);
1877 items = AvFILLp (av) + 1;
1878 }
1879
1880 PUTBACK; 2476 PUTBACK;
1881 switch (PL_op->op_private & 7) 2477 call_sv ((SV *)req, G_VOID | G_DISCARD);
1882 {
1883 case 0:
1884 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1885 break;
1886
1887 case 1:
1888 if (items != 2)
1889 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1890
1891 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1892 break;
1893
1894 case 2:
1895 prepare_schedule (aTHX_ &ta);
1896 break;
1897
1898 case 3:
1899 prepare_cede (aTHX_ &ta);
1900 break;
1901
1902 case 4:
1903 if (!prepare_cede_notself (aTHX_ &ta))
1904 goto skip;
1905
1906 break;
1907 } 2478 }
1908 2479
1909 TRANSFER (ta, 0); 2480 /* now that the requets is going, we loop toll we have a result */
1910 SPAGAIN; 2481 frame->data = (void *)state;
1911 2482 frame->prepare = prepare_schedule;
1912skip: 2483 frame->check = slf_check_aio_req;
1913 PUTBACK;
1914 SSL_TAIL;
1915 SPAGAIN;
1916 RETURN;
1917} 2484}
2485
2486static void
2487coro_aio_req_xs (pTHX_ CV *cv)
2488{
2489 dXSARGS;
2490
2491 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2492
2493 XSRETURN_EMPTY;
2494}
2495
2496/*****************************************************************************/
1918 2497
1919MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2498MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1920 2499
1921PROTOTYPES: DISABLE 2500PROTOTYPES: DISABLE
1922 2501
1923# these not obviously related functions are all rolled into the same xs
1924# function to increase chances that they all will call transfer with the same
1925# stack offset
1926void
1927_set_stacklevel (...)
1928 ALIAS:
1929 Coro::State::transfer = 1
1930 Coro::schedule = 2
1931 Coro::cede = 3
1932 Coro::cede_notself = 4
1933 CODE:
1934{
1935 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1936
1937 /* we patch the op, and then re-run the whole call */
1938 /* we have to put some dummy argument on the stack for this to work */
1939 /* TODO: walk back the opcode chain (but how?), nuke the pp_gv etc. */
1940 ssl_restore.op_next = (OP *)&ssl_restore;
1941 ssl_restore.op_type = OP_NULL;
1942 ssl_restore.op_ppaddr = pp_restore;
1943 ssl_restore.op_first = PL_op;
1944
1945 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1946 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1947
1948 PL_op->op_ppaddr = pp_set_stacklevel;
1949 PL_op->op_private = PL_op->op_private & ~7 | ix; /* we potentially share our private flags with entersub */
1950
1951 PL_op = (OP *)&ssl_restore;
1952}
1953
1954BOOT: 2502BOOT:
1955{ 2503{
1956#ifdef USE_ITHREADS 2504#ifdef USE_ITHREADS
1957 MUTEX_INIT (&coro_lock);
1958# if CORO_PTHREAD 2505# if CORO_PTHREAD
1959 coro_thx = PERL_GET_CONTEXT; 2506 coro_thx = PERL_GET_CONTEXT;
1960# endif 2507# endif
1961#endif 2508#endif
1962 BOOT_PAGESIZE; 2509 BOOT_PAGESIZE;
1963
1964 ssl_cv = get_cv ("Coro::State::_set_stacklevel", 0);
1965 2510
1966 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2511 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1967 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2512 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1968 2513
1969 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2514 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1985 main_top_env = PL_top_env; 2530 main_top_env = PL_top_env;
1986 2531
1987 while (main_top_env->je_prev) 2532 while (main_top_env->je_prev)
1988 main_top_env = main_top_env->je_prev; 2533 main_top_env = main_top_env->je_prev;
1989 2534
2535 {
2536 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2537
2538 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2539 hv_store_ent (PL_custom_op_names, slf,
2540 newSVpv ("coro_slf", 0), 0);
2541
2542 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2543 hv_store_ent (PL_custom_op_descs, slf,
2544 newSVpv ("coro schedule like function", 0), 0);
2545 }
2546
1990 coroapi.ver = CORO_API_VERSION; 2547 coroapi.ver = CORO_API_VERSION;
1991 coroapi.rev = CORO_API_REVISION; 2548 coroapi.rev = CORO_API_REVISION;
2549
1992 coroapi.transfer = api_transfer; 2550 coroapi.transfer = api_transfer;
2551
2552 coroapi.sv_state = SvSTATE_;
2553 coroapi.execute_slf = api_execute_slf;
2554 coroapi.prepare_nop = prepare_nop;
2555 coroapi.prepare_schedule = prepare_schedule;
2556 coroapi.prepare_cede = prepare_cede;
2557 coroapi.prepare_cede_notself = prepare_cede_notself;
1993 2558
1994 { 2559 {
1995 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2560 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1996 2561
1997 if (!svp) croak ("Time::HiRes is required"); 2562 if (!svp) croak ("Time::HiRes is required");
… …
2029 for (i = 1; i < items; i++) 2594 for (i = 1; i < items; i++)
2030 av_push (coro->args, newSVsv (ST (i))); 2595 av_push (coro->args, newSVsv (ST (i)));
2031} 2596}
2032 OUTPUT: 2597 OUTPUT:
2033 RETVAL 2598 RETVAL
2599
2600void
2601transfer (...)
2602 PROTOTYPE: $$
2603 CODE:
2604 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2034 2605
2035bool 2606bool
2036_destroy (SV *coro_sv) 2607_destroy (SV *coro_sv)
2037 CODE: 2608 CODE:
2038 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2609 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2045 CODE: 2616 CODE:
2046 _exit (code); 2617 _exit (code);
2047 2618
2048int 2619int
2049cctx_stacksize (int new_stacksize = 0) 2620cctx_stacksize (int new_stacksize = 0)
2621 PROTOTYPE: ;$
2050 CODE: 2622 CODE:
2051 RETVAL = cctx_stacksize; 2623 RETVAL = cctx_stacksize;
2052 if (new_stacksize) 2624 if (new_stacksize)
2053 { 2625 {
2054 cctx_stacksize = new_stacksize; 2626 cctx_stacksize = new_stacksize;
… …
2057 OUTPUT: 2629 OUTPUT:
2058 RETVAL 2630 RETVAL
2059 2631
2060int 2632int
2061cctx_max_idle (int max_idle = 0) 2633cctx_max_idle (int max_idle = 0)
2634 PROTOTYPE: ;$
2062 CODE: 2635 CODE:
2063 RETVAL = cctx_max_idle; 2636 RETVAL = cctx_max_idle;
2064 if (max_idle > 1) 2637 if (max_idle > 1)
2065 cctx_max_idle = max_idle; 2638 cctx_max_idle = max_idle;
2066 OUTPUT: 2639 OUTPUT:
2067 RETVAL 2640 RETVAL
2068 2641
2069int 2642int
2070cctx_count () 2643cctx_count ()
2644 PROTOTYPE:
2071 CODE: 2645 CODE:
2072 RETVAL = cctx_count; 2646 RETVAL = cctx_count;
2073 OUTPUT: 2647 OUTPUT:
2074 RETVAL 2648 RETVAL
2075 2649
2076int 2650int
2077cctx_idle () 2651cctx_idle ()
2652 PROTOTYPE:
2078 CODE: 2653 CODE:
2079 RETVAL = cctx_idle; 2654 RETVAL = cctx_idle;
2080 OUTPUT: 2655 OUTPUT:
2081 RETVAL 2656 RETVAL
2082 2657
2083void 2658void
2084list () 2659list ()
2660 PROTOTYPE:
2085 PPCODE: 2661 PPCODE:
2086{ 2662{
2087 struct coro *coro; 2663 struct coro *coro;
2088 for (coro = coro_first; coro; coro = coro->next) 2664 for (coro = coro_first; coro; coro = coro->next)
2089 if (coro->hv) 2665 if (coro->hv)
… …
2151 2727
2152void 2728void
2153throw (Coro::State self, SV *throw = &PL_sv_undef) 2729throw (Coro::State self, SV *throw = &PL_sv_undef)
2154 PROTOTYPE: $;$ 2730 PROTOTYPE: $;$
2155 CODE: 2731 CODE:
2732{
2733 struct coro *current = SvSTATE_current;
2734 SV **throwp = self == current ? &CORO_THROW : &self->except;
2156 SvREFCNT_dec (self->throw); 2735 SvREFCNT_dec (*throwp);
2157 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2736 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2737}
2158 2738
2159void 2739void
2160api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2740api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2741 PROTOTYPE: $;$
2742 C_ARGS: aTHX_ coro, flags
2161 2743
2162SV * 2744SV *
2163has_cctx (Coro::State coro) 2745has_cctx (Coro::State coro)
2164 PROTOTYPE: $ 2746 PROTOTYPE: $
2165 CODE: 2747 CODE:
… …
2189 OUTPUT: 2771 OUTPUT:
2190 RETVAL 2772 RETVAL
2191 2773
2192void 2774void
2193force_cctx () 2775force_cctx ()
2776 PROTOTYPE:
2194 CODE: 2777 CODE:
2195 struct coro *coro = SvSTATE (coro_current);
2196 coro->cctx->idle_sp = 0; 2778 SvSTATE_current->cctx->idle_sp = 0;
2197 2779
2198void 2780void
2199swap_defsv (Coro::State self) 2781swap_defsv (Coro::State self)
2200 PROTOTYPE: $ 2782 PROTOTYPE: $
2201 ALIAS: 2783 ALIAS:
2202 swap_defav = 1 2784 swap_defav = 1
2203 CODE: 2785 CODE:
2204 if (!self->slot) 2786 if (!self->slot)
2205 croak ("cannot swap state with coroutine that has no saved state"); 2787 croak ("cannot swap state with coroutine that has no saved state,");
2206 else 2788 else
2207 { 2789 {
2208 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2790 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2209 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2791 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2210 2792
2211 SV *tmp = *src; *src = *dst; *dst = tmp; 2793 SV *tmp = *src; *src = *dst; *dst = tmp;
2212 } 2794 }
2795
2213 2796
2214MODULE = Coro::State PACKAGE = Coro 2797MODULE = Coro::State PACKAGE = Coro
2215 2798
2216BOOT: 2799BOOT:
2217{ 2800{
… …
2242 coroapi.schedule = api_schedule; 2825 coroapi.schedule = api_schedule;
2243 coroapi.cede = api_cede; 2826 coroapi.cede = api_cede;
2244 coroapi.cede_notself = api_cede_notself; 2827 coroapi.cede_notself = api_cede_notself;
2245 coroapi.ready = api_ready; 2828 coroapi.ready = api_ready;
2246 coroapi.is_ready = api_is_ready; 2829 coroapi.is_ready = api_is_ready;
2247 coroapi.nready = &coro_nready; 2830 coroapi.nready = coro_nready;
2248 coroapi.current = coro_current; 2831 coroapi.current = coro_current;
2249 2832
2250 GCoroAPI = &coroapi; 2833 /*GCoroAPI = &coroapi;*/
2251 sv_setiv (sv, (IV)&coroapi); 2834 sv_setiv (sv, (IV)&coroapi);
2252 SvREADONLY_on (sv); 2835 SvREADONLY_on (sv);
2253 } 2836 }
2254} 2837}
2838
2839void
2840schedule (...)
2841 CODE:
2842 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2843
2844void
2845cede (...)
2846 CODE:
2847 CORO_EXECUTE_SLF_XS (slf_init_cede);
2848
2849void
2850cede_notself (...)
2851 CODE:
2852 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2255 2853
2256void 2854void
2257_set_current (SV *current) 2855_set_current (SV *current)
2258 PROTOTYPE: $ 2856 PROTOTYPE: $
2259 CODE: 2857 CODE:
… …
2262 2860
2263void 2861void
2264_set_readyhook (SV *hook) 2862_set_readyhook (SV *hook)
2265 PROTOTYPE: $ 2863 PROTOTYPE: $
2266 CODE: 2864 CODE:
2267 LOCK;
2268 SvREFCNT_dec (coro_readyhook); 2865 SvREFCNT_dec (coro_readyhook);
2269 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2866 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2270 UNLOCK;
2271 2867
2272int 2868int
2273prio (Coro::State coro, int newprio = 0) 2869prio (Coro::State coro, int newprio = 0)
2870 PROTOTYPE: $;$
2274 ALIAS: 2871 ALIAS:
2275 nice = 1 2872 nice = 1
2276 CODE: 2873 CODE:
2277{ 2874{
2278 RETVAL = coro->prio; 2875 RETVAL = coro->prio;
… …
2293 2890
2294SV * 2891SV *
2295ready (SV *self) 2892ready (SV *self)
2296 PROTOTYPE: $ 2893 PROTOTYPE: $
2297 CODE: 2894 CODE:
2298 RETVAL = boolSV (api_ready (self)); 2895 RETVAL = boolSV (api_ready (aTHX_ self));
2299 OUTPUT: 2896 OUTPUT:
2300 RETVAL 2897 RETVAL
2301 2898
2302int 2899int
2303nready (...) 2900nready (...)
… …
2310# for async_pool speedup 2907# for async_pool speedup
2311void 2908void
2312_pool_1 (SV *cb) 2909_pool_1 (SV *cb)
2313 CODE: 2910 CODE:
2314{ 2911{
2315 struct coro *coro = SvSTATE (coro_current);
2316 HV *hv = (HV *)SvRV (coro_current); 2912 HV *hv = (HV *)SvRV (coro_current);
2913 struct coro *coro = SvSTATE_hv ((SV *)hv);
2317 AV *defav = GvAV (PL_defgv); 2914 AV *defav = GvAV (PL_defgv);
2318 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2915 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2319 AV *invoke_av; 2916 AV *invoke_av;
2320 int i, len; 2917 int i, len;
2321 2918
… …
2342 { 2939 {
2343 av_fill (defav, len - 1); 2940 av_fill (defav, len - 1);
2344 for (i = 0; i < len; ++i) 2941 for (i = 0; i < len; ++i)
2345 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 2942 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2346 } 2943 }
2347
2348 SvREFCNT_dec (invoke);
2349} 2944}
2350 2945
2351void 2946void
2352_pool_2 (SV *cb) 2947_pool_2 (SV *cb)
2353 CODE: 2948 CODE:
2354{ 2949{
2355 struct coro *coro = SvSTATE (coro_current); 2950 HV *hv = (HV *)SvRV (coro_current);
2951 struct coro *coro = SvSTATE_hv ((SV *)hv);
2356 2952
2357 sv_setsv (cb, &PL_sv_undef); 2953 sv_setsv (cb, &PL_sv_undef);
2358 2954
2359 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2955 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2360 coro->saved_deffh = 0; 2956 coro->saved_deffh = 0;
… …
2367 SvREFCNT_dec (old); 2963 SvREFCNT_dec (old);
2368 croak ("\3async_pool terminate\2\n"); 2964 croak ("\3async_pool terminate\2\n");
2369 } 2965 }
2370 2966
2371 av_clear (GvAV (PL_defgv)); 2967 av_clear (GvAV (PL_defgv));
2372 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2968 hv_store (hv, "desc", sizeof ("desc") - 1,
2373 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2969 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2374 2970
2375 coro->prio = 0; 2971 coro->prio = 0;
2376 2972
2377 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2973 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2378 api_trace (coro_current, 0); 2974 api_trace (aTHX_ coro_current, 0);
2379 2975
2380 av_push (av_async_pool, newSVsv (coro_current)); 2976 av_push (av_async_pool, newSVsv (coro_current));
2381} 2977}
2382 2978
2383#if 0
2384
2385void
2386_generator_call (...)
2387 PROTOTYPE: @
2388 PPCODE:
2389 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2390 xxxx
2391 abort ();
2392
2393SV * 2979SV *
2394gensub (SV *sub, ...) 2980rouse_cb ()
2395 PROTOTYPE: &;@ 2981 PROTOTYPE:
2396 CODE: 2982 CODE:
2397{ 2983 RETVAL = coro_new_rouse_cb (aTHX);
2398 struct coro *coro;
2399 MAGIC *mg;
2400 CV *xcv;
2401 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2402 int i;
2403
2404 CvGV (ncv) = CvGV (cv);
2405 CvFILE (ncv) = CvFILE (cv);
2406
2407 Newz (0, coro, 1, struct coro);
2408 coro->args = newAV ();
2409 coro->flags = CF_NEW;
2410
2411 av_extend (coro->args, items - 1);
2412 for (i = 1; i < items; i++)
2413 av_push (coro->args, newSVsv (ST (i)));
2414
2415 CvISXSUB_on (ncv);
2416 CvXSUBANY (ncv).any_ptr = (void *)coro;
2417
2418 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2419
2420 CvXSUB (ncv) = CvXSUB (xcv);
2421 CvANON_on (ncv);
2422
2423 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2424 RETVAL = newRV_noinc ((SV *)ncv);
2425}
2426 OUTPUT: 2984 OUTPUT:
2427 RETVAL 2985 RETVAL
2428 2986
2429#endif
2430
2431
2432MODULE = Coro::State PACKAGE = Coro::AIO
2433
2434void 2987void
2435_get_state (SV *self) 2988rouse_wait (SV *cb = 0)
2989 PROTOTYPE: ;$
2436 PPCODE: 2990 PPCODE:
2437{ 2991 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2438 AV *defav = GvAV (PL_defgv);
2439 AV *av = newAV ();
2440 int i;
2441 SV *data_sv = newSV (sizeof (struct io_state));
2442 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2443 SvCUR_set (data_sv, sizeof (struct io_state));
2444 SvPOK_only (data_sv);
2445 2992
2446 data->errorno = errno;
2447 data->laststype = PL_laststype;
2448 data->laststatval = PL_laststatval;
2449 data->statcache = PL_statcache;
2450 2993
2451 av_extend (av, AvFILLp (defav) + 1 + 1); 2994MODULE = Coro::State PACKAGE = PerlIO::cede
2452 2995
2453 for (i = 0; i <= AvFILLp (defav); ++i) 2996BOOT:
2454 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 2997 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2455 2998
2456 av_push (av, data_sv);
2457 2999
2458 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3000MODULE = Coro::State PACKAGE = Coro::Semaphore
2459 3001
2460 api_ready (self); 3002SV *
2461} 3003new (SV *klass, SV *count = 0)
3004 CODE:
3005 RETVAL = sv_bless (
3006 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3007 GvSTASH (CvGV (cv))
3008 );
3009 OUTPUT:
3010 RETVAL
3011
3012# helper for Coro::Channel
3013SV *
3014_alloc (int count)
3015 CODE:
3016 RETVAL = coro_waitarray_new (aTHX_ count);
3017 OUTPUT:
3018 RETVAL
3019
3020SV *
3021count (SV *self)
3022 CODE:
3023 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3024 OUTPUT:
3025 RETVAL
2462 3026
2463void 3027void
2464_set_state (SV *state) 3028up (SV *self, int adjust = 1)
2465 PROTOTYPE: $ 3029 ALIAS:
3030 adjust = 1
3031 CODE:
3032 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3033
3034void
3035down (SV *self)
3036 CODE:
3037 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3038
3039void
3040wait (SV *self)
3041 CODE:
3042 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3043
3044void
3045try (SV *self)
3046 PPCODE:
3047{
3048 AV *av = (AV *)SvRV (self);
3049 SV *count_sv = AvARRAY (av)[0];
3050 IV count = SvIVX (count_sv);
3051
3052 if (count > 0)
3053 {
3054 --count;
3055 SvIVX (count_sv) = count;
3056 XSRETURN_YES;
3057 }
3058 else
3059 XSRETURN_NO;
3060}
3061
3062void
3063waiters (SV *self)
3064 PPCODE:
3065{
3066 AV *av = (AV *)SvRV (self);
3067 int wcount = AvFILLp (av) + 1 - 1;
3068
3069 if (GIMME_V == G_SCALAR)
3070 XPUSHs (sv_2mortal (newSViv (wcount)));
3071 else
3072 {
3073 int i;
3074 EXTEND (SP, wcount);
3075 for (i = 1; i <= wcount; ++i)
3076 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3077 }
3078}
3079
3080MODULE = Coro::State PACKAGE = Coro::Signal
3081
3082SV *
3083new (SV *klass)
2466 PPCODE: 3084 CODE:
3085 RETVAL = sv_bless (
3086 coro_waitarray_new (aTHX_ 0),
3087 GvSTASH (CvGV (cv))
3088 );
3089 OUTPUT:
3090 RETVAL
3091
3092void
3093wait (SV *self)
3094 CODE:
3095 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3096
3097void
3098broadcast (SV *self)
3099 CODE:
2467{ 3100{
2468 AV *av = (AV *)SvRV (state); 3101 AV *av = (AV *)SvRV (self);
2469 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3102 coro_signal_wake (aTHX_ av, AvFILLp (av));
2470 int i; 3103}
2471 3104
2472 errno = data->errorno; 3105void
2473 PL_laststype = data->laststype; 3106send (SV *self)
2474 PL_laststatval = data->laststatval; 3107 CODE:
2475 PL_statcache = data->statcache; 3108{
3109 AV *av = (AV *)SvRV (self);
2476 3110
2477 EXTEND (SP, AvFILLp (av)); 3111 if (AvFILLp (av))
2478 for (i = 0; i < AvFILLp (av); ++i) 3112 coro_signal_wake (aTHX_ av, 1);
2479 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3113 else
3114 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2480} 3115}
3116
3117IV
3118awaited (SV *self)
3119 CODE:
3120 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3121 OUTPUT:
3122 RETVAL
2481 3123
2482 3124
2483MODULE = Coro::State PACKAGE = Coro::AnyEvent 3125MODULE = Coro::State PACKAGE = Coro::AnyEvent
2484 3126
2485BOOT: 3127BOOT:
2486 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3128 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2487 3129
2488SV * 3130void
2489_schedule (...) 3131_schedule (...)
2490 PROTOTYPE: @
2491 CODE: 3132 CODE:
2492{ 3133{
2493 static int incede; 3134 static int incede;
2494 3135
2495 api_cede_notself (); 3136 api_cede_notself (aTHX);
2496 3137
2497 ++incede; 3138 ++incede;
2498 while (coro_nready >= incede && api_cede ()) 3139 while (coro_nready >= incede && api_cede (aTHX))
2499 ; 3140 ;
2500 3141
2501 sv_setsv (sv_activity, &PL_sv_undef); 3142 sv_setsv (sv_activity, &PL_sv_undef);
2502 if (coro_nready >= incede) 3143 if (coro_nready >= incede)
2503 { 3144 {
2504 PUSHMARK (SP); 3145 PUSHMARK (SP);
2505 PUTBACK; 3146 PUTBACK;
2506 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3147 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2507 SPAGAIN;
2508 } 3148 }
2509 3149
2510 --incede; 3150 --incede;
2511} 3151}
2512 3152
2513 3153
2514MODULE = Coro::State PACKAGE = PerlIO::cede 3154MODULE = Coro::State PACKAGE = Coro::AIO
2515 3155
2516BOOT: 3156void
2517 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3157_register (char *target, char *proto, SV *req)
3158 CODE:
3159{
3160 HV *st;
3161 GV *gvp;
3162 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
3163 /* newXSproto doesn't return the CV on 5.8 */
3164 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3165 sv_setpv ((SV *)slf_cv, proto);
3166 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3167}
2518 3168

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