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Comparing Coro/Coro/State.xs (file contents):
Revision 1.284 by root, Mon Nov 17 01:05:47 2008 UTC vs.
Revision 1.321 by root, Sat Nov 22 02:09:54 2008 UTC

1#define CORO_CLONE 1 //D
2
1#include "libcoro/coro.c" 3#include "libcoro/coro.c"
2 4
3#define PERL_NO_GET_CONTEXT 5#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 6#define PERL_EXT
5 7
… …
16 18
17#ifdef WIN32 19#ifdef WIN32
18# undef setjmp 20# undef setjmp
19# undef longjmp 21# undef longjmp
20# undef _exit 22# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 23# define setjmp _setjmp /* deep magic */
22#else 24#else
23# include <inttypes.h> /* most portable stdint.h */ 25# include <inttypes.h> /* most portable stdint.h */
24#endif 26#endif
25 27
26#ifdef HAVE_MMAP 28#ifdef HAVE_MMAP
… …
55 57
56#define PERL_VERSION_ATLEAST(a,b,c) \ 58#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 59 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 60 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 61 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 62 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 63
62#if !PERL_VERSION_ATLEAST (5,6,0) 64#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 65# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 66# define PL_ppaddr ppaddr
65# endif 67# endif
… …
95# define GV_NOTQUAL 0 97# define GV_NOTQUAL 0
96#endif 98#endif
97#ifndef newSV 99#ifndef newSV
98# define newSV(l) NEWSV(0,l) 100# define newSV(l) NEWSV(0,l)
99#endif 101#endif
102#ifndef CvISXSUB_on
103# define CvISXSUB_on(cv) (void)cv
104#endif
105#ifndef CvISXSUB
106# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
107#endif
108#ifndef Newx
109# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
110#endif
100 111
101/* 5.8.7 */ 112/* 5.8.7 */
102#ifndef SvRV_set 113#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 114# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 115#endif
… …
117#endif 128#endif
118 129
119/* The next macros try to return the current stack pointer, in an as 130/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 131 * portable way as possible. */
121#if __GNUC__ >= 4 132#if __GNUC__ >= 4
133# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 134# define STACKLEVEL __builtin_frame_address (0)
123#else 135#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 136# define dSTACKLEVEL volatile void *stacklevel
137# define STACKLEVEL ((void *)&stacklevel)
125#endif 138#endif
126 139
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 140#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 141
129#if __GNUC__ >= 3 142#if __GNUC__ >= 3
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 153#define expect_true(expr) expect ((expr) != 0, 1)
141 154
142#define NOINLINE attribute ((noinline)) 155#define NOINLINE attribute ((noinline))
143 156
144#include "CoroAPI.h" 157#include "CoroAPI.h"
158#define GCoroAPI (&coroapi) /* very sneaky */
145 159
146#ifdef USE_ITHREADS 160#ifdef USE_ITHREADS
147# if CORO_PTHREAD 161# if CORO_PTHREAD
148static void *coro_thx; 162static void *coro_thx;
149# endif 163# endif
150#endif 164#endif
151 165
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? */ 166static double (*nvtime)(); /* so why doesn't it take void? */
167
168/* we hijack an hopefully unused CV flag for our purposes */
169#define CVf_SLF 0x4000
170static OP *pp_slf (pTHX);
163 171
164static U32 cctx_gen; 172static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 173static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 174static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 175static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 176static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 177static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 178static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 179
180static AV *av_destroy; /* destruction queue */
181static SV *sv_manager; /* the manager coro */
182
172static GV *irsgv; /* $/ */ 183static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 184static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 185static SV *rv_diehook;
175static SV *rv_warnhook; 186static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 187static HV *hv_sig; /* %SIG */
177 188
178/* async_pool helper stuff */ 189/* async_pool helper stuff */
179static SV *sv_pool_rss; 190static SV *sv_pool_rss;
180static SV *sv_pool_size; 191static SV *sv_pool_size;
192static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 193static AV *av_async_pool; /* idle pool */
194static SV *sv_Coro; /* class string */
195static CV *cv_pool_handler;
196static CV *cv_coro_state_new;
182 197
183/* Coro::AnyEvent */ 198/* Coro::AnyEvent */
184static SV *sv_activity; 199static SV *sv_activity;
185 200
186static struct coro_cctx *cctx_first; 201static struct coro_cctx *cctx_first;
… …
241/* this is a structure representing a perl-level coroutine */ 256/* this is a structure representing a perl-level coroutine */
242struct coro { 257struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */ 258 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 259 coro_cctx *cctx;
245 260
246 /* process data */ 261 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 262 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 263 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 264 perl_slots *slot; /* basically the saved sp */
250 265
266 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 267 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 268 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 269 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 270 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro); 271 void (*on_destroy)(pTHX_ struct coro *coro);
256 272
257 /* statistics */ 273 /* statistics */
258 int usecount; /* number of transfers to this coro */ 274 int usecount; /* number of transfers to this coro */
259 275
260 /* coro process data */ 276 /* coro process data */
261 int prio; 277 int prio;
262 SV *throw; /* exception to be thrown */ 278 SV *except; /* exception to be thrown */
279 SV *rouse_cb;
263 280
264 /* async_pool */ 281 /* async_pool */
265 SV *saved_deffh; 282 SV *saved_deffh;
283 SV *invoke_cb;
284 AV *invoke_av;
266 285
267 /* linked list */ 286 /* linked list */
268 struct coro *next, *prev; 287 struct coro *next, *prev;
269}; 288};
270 289
271typedef struct coro *Coro__State; 290typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 291typedef struct coro *Coro__State_or_hashref;
273 292
293/* the following variables are effectively part of the perl context */
294/* and get copied between struct coro and these variables */
295/* the mainr easonw e don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 296static struct CoroSLF slf_frame; /* the current slf frame */
275 297
276/** Coro ********************************************************************/ 298/** Coro ********************************************************************/
277 299
278#define PRIO_MAX 3 300#define PRIO_MAX 3
… …
284 306
285/* for Coro.pm */ 307/* for Coro.pm */
286static SV *coro_current; 308static SV *coro_current;
287static SV *coro_readyhook; 309static SV *coro_readyhook;
288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 310static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
311static CV *cv_coro_run, *cv_coro_terminate;
289static struct coro *coro_first; 312static struct coro *coro_first;
290#define coro_nready coroapi.nready 313#define coro_nready coroapi.nready
291 314
292/** lowlevel stuff **********************************************************/ 315/** lowlevel stuff **********************************************************/
293 316
… …
319 get_hv (name, create); 342 get_hv (name, create);
320#endif 343#endif
321 return get_hv (name, create); 344 return get_hv (name, create);
322} 345}
323 346
347/* may croak */
348INLINE CV *
349coro_sv_2cv (pTHX_ SV *sv)
350{
351 HV *st;
352 GV *gvp;
353 return sv_2cv (sv, &st, &gvp, 0);
354}
355
324static AV * 356static AV *
325coro_clone_padlist (pTHX_ CV *cv) 357coro_derive_padlist (pTHX_ CV *cv)
326{ 358{
327 AV *padlist = CvPADLIST (cv); 359 AV *padlist = CvPADLIST (cv);
328 AV *newpadlist, *newpad; 360 AV *newpadlist, *newpad;
329 361
330 newpadlist = newAV (); 362 newpadlist = newAV ();
… …
380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 412 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381 413
382 return 0; 414 return 0;
383} 415}
384 416
385#define CORO_MAGIC_type_cv PERL_MAGIC_ext 417#define CORO_MAGIC_type_cv 26
386#define CORO_MAGIC_type_state PERL_MAGIC_ext 418#define CORO_MAGIC_type_state PERL_MAGIC_ext
387 419
388static MGVTBL coro_cv_vtbl = { 420static MGVTBL coro_cv_vtbl = {
389 0, 0, 0, 0, 421 0, 0, 0, 0,
390 coro_cv_free 422 coro_cv_free
391}; 423};
392 424
425#define CORO_MAGIC_NN(sv, type) \
426 (expect_true (SvMAGIC (sv)->mg_type == type) \
427 ? SvMAGIC (sv) \
428 : mg_find (sv, type))
429
393#define CORO_MAGIC(sv, type) \ 430#define CORO_MAGIC(sv, type) \
394 expect_true (SvMAGIC (sv)) \ 431 (expect_true (SvMAGIC (sv)) \
395 ? expect_true (SvMAGIC (sv)->mg_type == type) \ 432 ? CORO_MAGIC_NN (sv, type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type) \
398 : 0 433 : 0)
399 434
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 435#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 436#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
402 437
403INLINE struct coro * 438INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro) 439SvSTATE_ (pTHX_ SV *coro)
405{ 440{
406 HV *stash; 441 HV *stash;
… …
424 return (struct coro *)mg->mg_ptr; 459 return (struct coro *)mg->mg_ptr;
425} 460}
426 461
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 462#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428 463
429/* fastert than SvSTATE, but expects a coroutine hv */ 464/* faster than SvSTATE, but expects a coroutine hv */
430INLINE struct coro * 465#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) 466#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441 467
442/* the next two functions merely cache the padlists */ 468/* the next two functions merely cache the padlists */
443static void 469static void
444get_padlist (pTHX_ CV *cv) 470get_padlist (pTHX_ CV *cv)
… …
451 else 477 else
452 { 478 {
453#if CORO_PREFER_PERL_FUNCTIONS 479#if CORO_PREFER_PERL_FUNCTIONS
454 /* this is probably cleaner? but also slower! */ 480 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */ 481 /* in practise, it seems to be less stable */
456 CV *cp = Perl_cv_clone (cv); 482 CV *cp = Perl_cv_clone (aTHX_ cv);
457 CvPADLIST (cv) = CvPADLIST (cp); 483 CvPADLIST (cv) = CvPADLIST (cp);
458 CvPADLIST (cp) = 0; 484 CvPADLIST (cp) = 0;
459 SvREFCNT_dec (cp); 485 SvREFCNT_dec (cp);
460#else 486#else
461 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 487 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
462#endif 488#endif
463 } 489 }
464} 490}
465 491
466static void 492static void
… …
513 } 539 }
514 540
515 PUTBACK; 541 PUTBACK;
516 } 542 }
517 543
518 slf_frame = c->slf_frame; 544 slf_frame = c->slf_frame;
545 CORO_THROW = c->except;
519} 546}
520 547
521static void 548static void
522save_perl (pTHX_ Coro__State c) 549save_perl (pTHX_ Coro__State c)
523{ 550{
551 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 552 c->slf_frame = slf_frame;
525 553
526 { 554 {
527 dSP; 555 dSP;
528 I32 cxix = cxstack_ix; 556 I32 cxix = cxstack_ix;
… …
603 * of perl.c:init_stacks, except that it uses less memory 631 * of perl.c:init_stacks, except that it uses less memory
604 * on the (sometimes correct) assumption that coroutines do 632 * on the (sometimes correct) assumption that coroutines do
605 * not usually need a lot of stackspace. 633 * not usually need a lot of stackspace.
606 */ 634 */
607#if CORO_PREFER_PERL_FUNCTIONS 635#if CORO_PREFER_PERL_FUNCTIONS
608# define coro_init_stacks init_stacks 636# define coro_init_stacks(thx) init_stacks ()
609#else 637#else
610static void 638static void
611coro_init_stacks (pTHX) 639coro_init_stacks (pTHX)
612{ 640{
613 PL_curstackinfo = new_stackinfo(32, 8); 641 PL_curstackinfo = new_stackinfo(32, 8);
… …
676#if !PERL_VERSION_ATLEAST (5,10,0) 704#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 705 Safefree (PL_retstack);
678#endif 706#endif
679} 707}
680 708
709#define CORO_RSS \
710 rss += sizeof (SYM (curstackinfo)); \
711 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
712 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
713 rss += SYM (tmps_max) * sizeof (SV *); \
714 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
715 rss += SYM (scopestack_max) * sizeof (I32); \
716 rss += SYM (savestack_max) * sizeof (ANY);
717
681static size_t 718static size_t
682coro_rss (pTHX_ struct coro *coro) 719coro_rss (pTHX_ struct coro *coro)
683{ 720{
684 size_t rss = sizeof (*coro); 721 size_t rss = sizeof (*coro);
685 722
686 if (coro->mainstack) 723 if (coro->mainstack)
687 { 724 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 725 if (coro->flags & CF_RUNNING)
692 { 726 {
693 slot = &tmp_slot; 727 #define SYM(sym) PL_ ## sym
694 728 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 729 #undef SYM
698 } 730 }
699 else 731 else
700 slot = coro->slot;
701
702 if (slot)
703 { 732 {
704 rss += sizeof (slot->curstackinfo); 733 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 734 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 735 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 736 }
716 } 737 }
717 738
718 return rss; 739 return rss;
719} 740}
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 842slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 843{
823 return 0; 844 return 0;
824} 845}
825 846
826static void 847static int
848slf_check_repeat (pTHX_ struct CoroSLF *frame)
849{
850 return 1;
851}
852
853static UNOP coro_setup_op;
854
855static void NOINLINE /* noinline to keep it out of the transfer fast path */
827coro_setup (pTHX_ struct coro *coro) 856coro_setup (pTHX_ struct coro *coro)
828{ 857{
829 /* 858 /*
830 * emulate part of the perl startup here. 859 * emulate part of the perl startup here.
831 */ 860 */
… …
858 { 887 {
859 dSP; 888 dSP;
860 UNOP myop; 889 UNOP myop;
861 890
862 Zero (&myop, 1, UNOP); 891 Zero (&myop, 1, UNOP);
863 myop.op_next = Nullop; 892 myop.op_next = Nullop;
893 myop.op_type = OP_ENTERSUB;
864 myop.op_flags = OPf_WANT_VOID; 894 myop.op_flags = OPf_WANT_VOID;
865 895
866 PUSHMARK (SP); 896 PUSHMARK (SP);
867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 897 PUSHs ((SV *)coro->startcv);
868 PUTBACK; 898 PUTBACK;
869 PL_op = (OP *)&myop; 899 PL_op = (OP *)&myop;
870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 900 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
871 SPAGAIN;
872 } 901 }
873 902
874 /* this newly created coroutine might be run on an existing cctx which most 903 /* this newly created coroutine might be run on an existing cctx which most
875 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 904 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876 */ 905 */
877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 906 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 907 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
908
909 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
910 coro_setup_op.op_next = PL_op;
911 coro_setup_op.op_type = OP_ENTERSUB;
912 coro_setup_op.op_ppaddr = pp_slf;
913 /* no flags etc. required, as an init function won't be called */
914
915 PL_op = (OP *)&coro_setup_op;
916
917 /* copy throw, in case it was set before coro_setup */
918 CORO_THROW = coro->except;
879} 919}
880 920
881static void 921static void
882coro_destruct (pTHX_ struct coro *coro) 922coro_destruct (pTHX_ struct coro *coro)
883{ 923{
… …
907 947
908 SvREFCNT_dec (PL_diehook); 948 SvREFCNT_dec (PL_diehook);
909 SvREFCNT_dec (PL_warnhook); 949 SvREFCNT_dec (PL_warnhook);
910 950
911 SvREFCNT_dec (coro->saved_deffh); 951 SvREFCNT_dec (coro->saved_deffh);
912 SvREFCNT_dec (coro->throw); 952 SvREFCNT_dec (coro->rouse_cb);
953 SvREFCNT_dec (coro->invoke_cb);
954 SvREFCNT_dec (coro->invoke_av);
913 955
914 coro_destruct_stacks (aTHX); 956 coro_destruct_stacks (aTHX);
915} 957}
916 958
917INLINE void 959INLINE void
… …
989 { 1031 {
990 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1032 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
991 1033
992 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1034 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
993 { 1035 {
994 runops_proc_t old_runops = PL_runops;
995 dSP; 1036 dSP;
996 GV *gv = CvGV (cx->blk_sub.cv); 1037 GV *gv = CvGV (cx->blk_sub.cv);
997 SV *fullname = sv_2mortal (newSV (0)); 1038 SV *fullname = sv_2mortal (newSV (0));
998 1039
999 if (isGV (gv)) 1040 if (isGV (gv))
… …
1004 SAVETMPS; 1045 SAVETMPS;
1005 EXTEND (SP, 3); 1046 EXTEND (SP, 3);
1006 PUSHMARK (SP); 1047 PUSHMARK (SP);
1007 PUSHs (&PL_sv_yes); 1048 PUSHs (&PL_sv_yes);
1008 PUSHs (fullname); 1049 PUSHs (fullname);
1009 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1050 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1010 PUTBACK; 1051 PUTBACK;
1011 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1052 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1012 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1053 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1013 SPAGAIN; 1054 SPAGAIN;
1014 FREETMPS; 1055 FREETMPS;
… …
1046 1087
1047 TAINT_NOT; 1088 TAINT_NOT;
1048 return 0; 1089 return 0;
1049} 1090}
1050 1091
1092static struct coro_cctx *cctx_ssl_cctx;
1093static struct CoroSLF cctx_ssl_frame;
1094
1051static void 1095static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1096slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1053{ 1097{
1054 ta->prev = (struct coro *)cctx; 1098 ta->prev = (struct coro *)cctx_ssl_cctx;
1055 ta->next = 0; 1099 ta->next = 0;
1056} 1100}
1057 1101
1058/* inject a fake call to Coro::State::_cctx_init into the execution */ 1102static int
1059/* _cctx_init should be careful, as it could be called at almost any time */ 1103slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1060/* during execution of a perl program */ 1104{
1061/* also initialises PL_top_env */ 1105 *frame = cctx_ssl_frame;
1106
1107 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1108}
1109
1110/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1062static void NOINLINE 1111static void NOINLINE
1063cctx_prepare (pTHX_ coro_cctx *cctx) 1112cctx_prepare (pTHX_ coro_cctx *cctx)
1064{ 1113{
1065 dSP;
1066 UNOP myop;
1067
1068 PL_top_env = &PL_start_env; 1114 PL_top_env = &PL_start_env;
1069 1115
1070 if (cctx->flags & CC_TRACE) 1116 if (cctx->flags & CC_TRACE)
1071 PL_runops = runops_trace; 1117 PL_runops = runops_trace;
1072 1118
1073 Zero (&myop, 1, UNOP); 1119 /* we already must be executing an SLF op, there is no other valid way
1074 myop.op_next = PL_op; 1120 * that can lead to creation of a new cctx */
1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1121 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1122 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1076 1123
1077 PUSHMARK (SP); 1124 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1078 EXTEND (SP, 2); 1125 cctx_ssl_cctx = cctx;
1079 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1126 cctx_ssl_frame = slf_frame;
1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1127
1081 PUTBACK; 1128 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PL_op = (OP *)&myop; 1129 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1084 SPAGAIN;
1085} 1130}
1086 1131
1087/* the tail of transfer: execute stuff we can only do after a transfer */ 1132/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void 1133INLINE void
1089transfer_tail (pTHX) 1134transfer_tail (pTHX)
… …
1116 transfer_tail (aTHX); 1161 transfer_tail (aTHX);
1117 1162
1118 /* somebody or something will hit me for both perl_run and PL_restartop */ 1163 /* somebody or something will hit me for both perl_run and PL_restartop */
1119 PL_restartop = PL_op; 1164 PL_restartop = PL_op;
1120 perl_run (PL_curinterp); 1165 perl_run (PL_curinterp);
1166 /*
1167 * Unfortunately, there is no way to get at the return values of the
1168 * coro body here, as perl_run destroys these
1169 */
1121 1170
1122 /* 1171 /*
1123 * If perl-run returns we assume exit() was being called or the coro 1172 * If perl-run returns we assume exit() was being called or the coro
1124 * fell off the end, which seems to be the only valid (non-bug) 1173 * fell off the end, which seems to be the only valid (non-bug)
1125 * reason for perl_run to return. We try to exit by jumping to the 1174 * reason for perl_run to return. We try to exit by jumping to the
… …
1276/** coroutine switching *****************************************************/ 1325/** coroutine switching *****************************************************/
1277 1326
1278static void 1327static void
1279transfer_check (pTHX_ struct coro *prev, struct coro *next) 1328transfer_check (pTHX_ struct coro *prev, struct coro *next)
1280{ 1329{
1330 /* TODO: throwing up here is considered harmful */
1331
1281 if (expect_true (prev != next)) 1332 if (expect_true (prev != next))
1282 { 1333 {
1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1334 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1335 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1285 1336
… …
1295#endif 1346#endif
1296 } 1347 }
1297} 1348}
1298 1349
1299/* always use the TRANSFER macro */ 1350/* always use the TRANSFER macro */
1300static void NOINLINE 1351static void NOINLINE /* noinline so we have a fixed stackframe */
1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1352transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1302{ 1353{
1303 dSTACKLEVEL; 1354 dSTACKLEVEL;
1304 1355
1305 /* sometimes transfer is only called to set idle_sp */ 1356 /* sometimes transfer is only called to set idle_sp */
1306 if (expect_false (!next)) 1357 if (expect_false (!next))
1307 { 1358 {
1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1359 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1360 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1310 } 1361 }
1311 else if (expect_true (prev != next)) 1362 else if (expect_true (prev != next))
1312 { 1363 {
1313 coro_cctx *prev__cctx; 1364 coro_cctx *prev__cctx;
… …
1338 1389
1339 prev__cctx = prev->cctx; 1390 prev__cctx = prev->cctx;
1340 1391
1341 /* possibly untie and reuse the cctx */ 1392 /* possibly untie and reuse the cctx */
1342 if (expect_true ( 1393 if (expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel 1394 prev__cctx->idle_sp == STACKLEVEL
1344 && !(prev__cctx->flags & CC_TRACE) 1395 && !(prev__cctx->flags & CC_TRACE)
1345 && !force_cctx 1396 && !force_cctx
1346 )) 1397 ))
1347 { 1398 {
1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1399 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
… …
1415 1466
1416 coro->slot = 0; 1467 coro->slot = 0;
1417 } 1468 }
1418 1469
1419 cctx_destroy (coro->cctx); 1470 cctx_destroy (coro->cctx);
1471 SvREFCNT_dec (coro->startcv);
1420 SvREFCNT_dec (coro->args); 1472 SvREFCNT_dec (coro->args);
1473 SvREFCNT_dec (CORO_THROW);
1421 1474
1422 if (coro->next) coro->next->prev = coro->prev; 1475 if (coro->next) coro->next->prev = coro->prev;
1423 if (coro->prev) coro->prev->next = coro->next; 1476 if (coro->prev) coro->prev->next = coro->next;
1424 if (coro == coro_first) coro_first = coro->next; 1477 if (coro == coro_first) coro_first = coro->next;
1425 1478
… …
1479 1532
1480 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1533 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1481 TRANSFER (ta, 1); 1534 TRANSFER (ta, 1);
1482} 1535}
1483 1536
1537/*****************************************************************************/
1538/* gensub: simple closure generation utility */
1539
1540#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1541
1542/* create a closure from XS, returns a code reference */
1543/* the arg can be accessed via GENSUB_ARG from the callback */
1544/* the callback must use dXSARGS/XSRETURN */
1545static SV *
1546gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1547{
1548 CV *cv = (CV *)newSV (0);
1549
1550 sv_upgrade ((SV *)cv, SVt_PVCV);
1551
1552 CvANON_on (cv);
1553 CvISXSUB_on (cv);
1554 CvXSUB (cv) = xsub;
1555 GENSUB_ARG = arg;
1556
1557 return newRV_noinc ((SV *)cv);
1558}
1559
1484/** Coro ********************************************************************/ 1560/** Coro ********************************************************************/
1485 1561
1486INLINE void 1562INLINE void
1487coro_enq (pTHX_ struct coro *coro) 1563coro_enq (pTHX_ struct coro *coro)
1488{ 1564{
… …
1531 ENTER; 1607 ENTER;
1532 SAVETMPS; 1608 SAVETMPS;
1533 1609
1534 PUSHMARK (SP); 1610 PUSHMARK (SP);
1535 PUTBACK; 1611 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD); 1612 call_sv (sv_hook, G_VOID | G_DISCARD);
1537 SPAGAIN;
1538 1613
1539 FREETMPS; 1614 FREETMPS;
1540 LEAVE; 1615 LEAVE;
1541 } 1616 }
1542 1617
… …
1550api_is_ready (pTHX_ SV *coro_sv) 1625api_is_ready (pTHX_ SV *coro_sv)
1551{ 1626{
1552 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1627 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1553} 1628}
1554 1629
1630/* expects to own a reference to next->hv */
1555INLINE void 1631INLINE void
1632prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1633{
1634 SV *prev_sv = SvRV (coro_current);
1635
1636 ta->prev = SvSTATE_hv (prev_sv);
1637 ta->next = next;
1638
1639 TRANSFER_CHECK (*ta);
1640
1641 SvRV_set (coro_current, (SV *)next->hv);
1642
1643 free_coro_mortal (aTHX);
1644 coro_mortal = prev_sv;
1645}
1646
1647static void
1556prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1648prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1557{ 1649{
1558 SV *prev_sv, *next_sv;
1559
1560 for (;;) 1650 for (;;)
1561 { 1651 {
1562 next_sv = coro_deq (aTHX); 1652 SV *next_sv = coro_deq (aTHX);
1563 1653
1564 /* nothing to schedule: call the idle handler */
1565 if (expect_false (!next_sv)) 1654 if (expect_true (next_sv))
1566 { 1655 {
1656 struct coro *next = SvSTATE_hv (next_sv);
1657
1658 /* cannot transfer to destroyed coros, skip and look for next */
1659 if (expect_false (next->flags & CF_DESTROYED))
1660 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1661 else
1662 {
1663 next->flags &= ~CF_READY;
1664 --coro_nready;
1665
1666 prepare_schedule_to (aTHX_ ta, next);
1667 break;
1668 }
1669 }
1670 else
1671 {
1672 /* nothing to schedule: call the idle handler */
1567 dSP; 1673 dSP;
1568 1674
1569 ENTER; 1675 ENTER;
1570 SAVETMPS; 1676 SAVETMPS;
1571 1677
1572 PUSHMARK (SP); 1678 PUSHMARK (SP);
1573 PUTBACK; 1679 PUTBACK;
1574 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1680 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1575 SPAGAIN;
1576 1681
1577 FREETMPS; 1682 FREETMPS;
1578 LEAVE; 1683 LEAVE;
1579 continue;
1580 } 1684 }
1581
1582 ta->next = SvSTATE_hv (next_sv);
1583
1584 /* cannot transfer to destroyed coros, skip and look for next */
1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1586 {
1587 SvREFCNT_dec (next_sv);
1588 /* coro_nready has already been taken care of by destroy */
1589 continue;
1590 }
1591
1592 --coro_nready;
1593 break;
1594 } 1685 }
1595
1596 /* free this only after the transfer */
1597 prev_sv = SvRV (coro_current);
1598 ta->prev = SvSTATE_hv (prev_sv);
1599 TRANSFER_CHECK (*ta);
1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1601 ta->next->flags &= ~CF_READY;
1602 SvRV_set (coro_current, next_sv);
1603
1604 free_coro_mortal (aTHX);
1605 coro_mortal = prev_sv;
1606} 1686}
1607 1687
1608INLINE void 1688INLINE void
1609prepare_cede (pTHX_ struct coro_transfer_args *ta) 1689prepare_cede (pTHX_ struct coro_transfer_args *ta)
1610{ 1690{
… …
1631{ 1711{
1632 struct coro_transfer_args ta; 1712 struct coro_transfer_args ta;
1633 1713
1634 prepare_schedule (aTHX_ &ta); 1714 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1); 1715 TRANSFER (ta, 1);
1716}
1717
1718static void
1719api_schedule_to (pTHX_ SV *coro_sv)
1720{
1721 struct coro_transfer_args ta;
1722 struct coro *next = SvSTATE (coro_sv);
1723
1724 SvREFCNT_inc_NN (coro_sv);
1725 prepare_schedule_to (aTHX_ &ta, next);
1636} 1726}
1637 1727
1638static int 1728static int
1639api_cede (pTHX) 1729api_cede (pTHX)
1640{ 1730{
… …
1687 if (coro->flags & CF_RUNNING) 1777 if (coro->flags & CF_RUNNING)
1688 PL_runops = RUNOPS_DEFAULT; 1778 PL_runops = RUNOPS_DEFAULT;
1689 else 1779 else
1690 coro->slot->runops = RUNOPS_DEFAULT; 1780 coro->slot->runops = RUNOPS_DEFAULT;
1691 } 1781 }
1782}
1783
1784static void
1785coro_call_on_destroy (pTHX_ struct coro *coro)
1786{
1787 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1788 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1789
1790 if (on_destroyp)
1791 {
1792 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1793
1794 while (AvFILLp (on_destroy) >= 0)
1795 {
1796 dSP; /* don't disturb outer sp */
1797 SV *cb = av_pop (on_destroy);
1798
1799 PUSHMARK (SP);
1800
1801 if (statusp)
1802 {
1803 int i;
1804 AV *status = (AV *)SvRV (*statusp);
1805 EXTEND (SP, AvFILLp (status) + 1);
1806
1807 for (i = 0; i <= AvFILLp (status); ++i)
1808 PUSHs (AvARRAY (status)[i]);
1809 }
1810
1811 PUTBACK;
1812 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1813 }
1814 }
1815}
1816
1817static void
1818slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1819{
1820 int i;
1821 HV *hv = (HV *)SvRV (coro_current);
1822 AV *av = newAV ();
1823
1824 av_extend (av, items - 1);
1825 for (i = 0; i < items; ++i)
1826 av_push (av, SvREFCNT_inc_NN (arg [i]));
1827
1828 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1829
1830 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1831 api_ready (aTHX_ sv_manager);
1832
1833 frame->prepare = prepare_schedule;
1834 frame->check = slf_check_repeat;
1835}
1836
1837/*****************************************************************************/
1838/* async pool handler */
1839
1840static int
1841slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1842{
1843 HV *hv = (HV *)SvRV (coro_current);
1844 struct coro *coro = (struct coro *)frame->data;
1845
1846 if (!coro->invoke_cb)
1847 return 1; /* loop till we have invoke */
1848 else
1849 {
1850 hv_store (hv, "desc", sizeof ("desc") - 1,
1851 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1852
1853 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1854
1855 {
1856 dSP;
1857 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1858 PUTBACK;
1859 }
1860
1861 SvREFCNT_dec (GvAV (PL_defgv));
1862 GvAV (PL_defgv) = coro->invoke_av;
1863 coro->invoke_av = 0;
1864
1865 return 0;
1866 }
1867}
1868
1869static void
1870slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1871{
1872 HV *hv = (HV *)SvRV (coro_current);
1873 struct coro *coro = SvSTATE_hv ((SV *)hv);
1874
1875 if (expect_true (coro->saved_deffh))
1876 {
1877 /* subsequent iteration */
1878 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1879 coro->saved_deffh = 0;
1880
1881 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1882 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1883 {
1884 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1885 coro->invoke_av = newAV ();
1886
1887 frame->prepare = prepare_nop;
1888 }
1889 else
1890 {
1891 av_clear (GvAV (PL_defgv));
1892 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1893
1894 coro->prio = 0;
1895
1896 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1897 api_trace (aTHX_ coro_current, 0);
1898
1899 frame->prepare = prepare_schedule;
1900 av_push (av_async_pool, SvREFCNT_inc (hv));
1901 }
1902 }
1903 else
1904 {
1905 /* first iteration, simply fall through */
1906 frame->prepare = prepare_nop;
1907 }
1908
1909 frame->check = slf_check_pool_handler;
1910 frame->data = (void *)coro;
1911}
1912
1913/*****************************************************************************/
1914/* rouse callback */
1915
1916#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1917
1918static void
1919coro_rouse_callback (pTHX_ CV *cv)
1920{
1921 dXSARGS;
1922 SV *data = (SV *)GENSUB_ARG;
1923
1924 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1925 {
1926 /* first call, set args */
1927 AV *av = newAV ();
1928 SV *coro = SvRV (data);
1929
1930 SvRV_set (data, (SV *)av);
1931 api_ready (aTHX_ coro);
1932 SvREFCNT_dec (coro);
1933
1934 /* better take a full copy of the arguments */
1935 while (items--)
1936 av_store (av, items, newSVsv (ST (items)));
1937 }
1938
1939 XSRETURN_EMPTY;
1940}
1941
1942static int
1943slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1944{
1945 SV *data = (SV *)frame->data;
1946
1947 if (CORO_THROW)
1948 return 0;
1949
1950 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1951 return 1;
1952
1953 /* now push all results on the stack */
1954 {
1955 dSP;
1956 AV *av = (AV *)SvRV (data);
1957 int i;
1958
1959 EXTEND (SP, AvFILLp (av) + 1);
1960 for (i = 0; i <= AvFILLp (av); ++i)
1961 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1962
1963 /* we have stolen the elements, so ste length to zero and free */
1964 AvFILLp (av) = -1;
1965 av_undef (av);
1966
1967 PUTBACK;
1968 }
1969
1970 return 0;
1971}
1972
1973static void
1974slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1975{
1976 SV *cb;
1977
1978 if (items)
1979 cb = arg [0];
1980 else
1981 {
1982 struct coro *coro = SvSTATE_current;
1983
1984 if (!coro->rouse_cb)
1985 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1986
1987 cb = sv_2mortal (coro->rouse_cb);
1988 coro->rouse_cb = 0;
1989 }
1990
1991 if (!SvROK (cb)
1992 || SvTYPE (SvRV (cb)) != SVt_PVCV
1993 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1994 croak ("Coro::rouse_wait called with illegal callback argument,");
1995
1996 {
1997 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1998 SV *data = (SV *)GENSUB_ARG;
1999
2000 frame->data = (void *)data;
2001 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2002 frame->check = slf_check_rouse_wait;
2003 }
2004}
2005
2006static SV *
2007coro_new_rouse_cb (pTHX)
2008{
2009 HV *hv = (HV *)SvRV (coro_current);
2010 struct coro *coro = SvSTATE_hv (hv);
2011 SV *data = newRV_inc ((SV *)hv);
2012 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2013
2014 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2015 SvREFCNT_dec (data); /* magicext increases the refcount */
2016
2017 SvREFCNT_dec (coro->rouse_cb);
2018 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2019
2020 return cb;
2021}
2022
2023/*****************************************************************************/
2024/* schedule-like-function opcode (SLF) */
2025
2026static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2027static const CV *slf_cv;
2028static SV **slf_argv;
2029static int slf_argc, slf_arga; /* count, allocated */
2030static I32 slf_ax; /* top of stack, for restore */
2031
2032/* this restores the stack in the case we patched the entersub, to */
2033/* recreate the stack frame as perl will on following calls */
2034/* since entersub cleared the stack */
2035static OP *
2036pp_restore (pTHX)
2037{
2038 int i;
2039 SV **SP = PL_stack_base + slf_ax;
2040
2041 PUSHMARK (SP);
2042
2043 EXTEND (SP, slf_argc + 1);
2044
2045 for (i = 0; i < slf_argc; ++i)
2046 PUSHs (sv_2mortal (slf_argv [i]));
2047
2048 PUSHs ((SV *)CvGV (slf_cv));
2049
2050 RETURNOP (slf_restore.op_first);
2051}
2052
2053static void
2054slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2055{
2056 SV **arg = (SV **)slf_frame.data;
2057
2058 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2059}
2060
2061static void
2062slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2063{
2064 if (items != 2)
2065 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2066
2067 frame->prepare = slf_prepare_transfer;
2068 frame->check = slf_check_nop;
2069 frame->data = (void *)arg; /* let's hope it will stay valid */
2070}
2071
2072static void
2073slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{
2075 frame->prepare = prepare_schedule;
2076 frame->check = slf_check_nop;
2077}
2078
2079static void
2080slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2081{
2082 struct coro *next = (struct coro *)slf_frame.data;
2083
2084 SvREFCNT_inc_NN (next->hv);
2085 prepare_schedule_to (aTHX_ ta, next);
2086}
2087
2088static void
2089slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2090{
2091 if (!items)
2092 croak ("Coro::schedule_to expects a coroutine argument, caught");
2093
2094 frame->data = (void *)SvSTATE (arg [0]);
2095 frame->prepare = slf_prepare_schedule_to;
2096 frame->check = slf_check_nop;
2097}
2098
2099static void
2100slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2101{
2102 api_ready (aTHX_ SvRV (coro_current));
2103
2104 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2105}
2106
2107static void
2108slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2109{
2110 frame->prepare = prepare_cede;
2111 frame->check = slf_check_nop;
2112}
2113
2114static void
2115slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2116{
2117 frame->prepare = prepare_cede_notself;
2118 frame->check = slf_check_nop;
2119}
2120
2121/*
2122 * these not obviously related functions are all rolled into one
2123 * function to increase chances that they all will call transfer with the same
2124 * stack offset
2125 * SLF stands for "schedule-like-function".
2126 */
2127static OP *
2128pp_slf (pTHX)
2129{
2130 I32 checkmark; /* mark SP to see how many elements check has pushed */
2131
2132 /* set up the slf frame, unless it has already been set-up */
2133 /* the latter happens when a new coro has been started */
2134 /* or when a new cctx was attached to an existing coroutine */
2135 if (expect_true (!slf_frame.prepare))
2136 {
2137 /* first iteration */
2138 dSP;
2139 SV **arg = PL_stack_base + TOPMARK + 1;
2140 int items = SP - arg; /* args without function object */
2141 SV *gv = *sp;
2142
2143 /* do a quick consistency check on the "function" object, and if it isn't */
2144 /* for us, divert to the real entersub */
2145 if (SvTYPE (gv) != SVt_PVGV
2146 || !GvCV (gv)
2147 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2148 return PL_ppaddr[OP_ENTERSUB](aTHX);
2149
2150 if (!(PL_op->op_flags & OPf_STACKED))
2151 {
2152 /* ampersand-form of call, use @_ instead of stack */
2153 AV *av = GvAV (PL_defgv);
2154 arg = AvARRAY (av);
2155 items = AvFILLp (av) + 1;
2156 }
2157
2158 /* now call the init function, which needs to set up slf_frame */
2159 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2160 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2161
2162 /* pop args */
2163 SP = PL_stack_base + POPMARK;
2164
2165 PUTBACK;
2166 }
2167
2168 /* now that we have a slf_frame, interpret it! */
2169 /* we use a callback system not to make the code needlessly */
2170 /* complicated, but so we can run multiple perl coros from one cctx */
2171
2172 do
2173 {
2174 struct coro_transfer_args ta;
2175
2176 slf_frame.prepare (aTHX_ &ta);
2177 TRANSFER (ta, 0);
2178
2179 checkmark = PL_stack_sp - PL_stack_base;
2180 }
2181 while (slf_frame.check (aTHX_ &slf_frame));
2182
2183 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2184
2185 /* exception handling */
2186 if (expect_false (CORO_THROW))
2187 {
2188 SV *exception = sv_2mortal (CORO_THROW);
2189
2190 CORO_THROW = 0;
2191 sv_setsv (ERRSV, exception);
2192 croak (0);
2193 }
2194
2195 /* return value handling - mostly like entersub */
2196 /* make sure we put something on the stack in scalar context */
2197 if (GIMME_V == G_SCALAR)
2198 {
2199 dSP;
2200 SV **bot = PL_stack_base + checkmark;
2201
2202 if (sp == bot) /* too few, push undef */
2203 bot [1] = &PL_sv_undef;
2204 else if (sp != bot + 1) /* too many, take last one */
2205 bot [1] = *sp;
2206
2207 SP = bot + 1;
2208
2209 PUTBACK;
2210 }
2211
2212 return NORMAL;
2213}
2214
2215static void
2216api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2217{
2218 int i;
2219 SV **arg = PL_stack_base + ax;
2220 int items = PL_stack_sp - arg + 1;
2221
2222 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2223
2224 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2225 && PL_op->op_ppaddr != pp_slf)
2226 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2227
2228 CvFLAGS (cv) |= CVf_SLF;
2229 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2230 slf_cv = cv;
2231
2232 /* we patch the op, and then re-run the whole call */
2233 /* we have to put the same argument on the stack for this to work */
2234 /* and this will be done by pp_restore */
2235 slf_restore.op_next = (OP *)&slf_restore;
2236 slf_restore.op_type = OP_CUSTOM;
2237 slf_restore.op_ppaddr = pp_restore;
2238 slf_restore.op_first = PL_op;
2239
2240 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2241
2242 if (PL_op->op_flags & OPf_STACKED)
2243 {
2244 if (items > slf_arga)
2245 {
2246 slf_arga = items;
2247 free (slf_argv);
2248 slf_argv = malloc (slf_arga * sizeof (SV *));
2249 }
2250
2251 slf_argc = items;
2252
2253 for (i = 0; i < items; ++i)
2254 slf_argv [i] = SvREFCNT_inc (arg [i]);
2255 }
2256 else
2257 slf_argc = 0;
2258
2259 PL_op->op_ppaddr = pp_slf;
2260 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2261
2262 PL_op = (OP *)&slf_restore;
1692} 2263}
1693 2264
1694/*****************************************************************************/ 2265/*****************************************************************************/
1695/* PerlIO::cede */ 2266/* PerlIO::cede */
1696 2267
… …
1765 PerlIOBuf_get_cnt, 2336 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt, 2337 PerlIOBuf_set_ptrcnt,
1767}; 2338};
1768 2339
1769/*****************************************************************************/ 2340/*****************************************************************************/
2341/* Coro::Semaphore & Coro::Signal */
1770 2342
1771static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1772static const CV *slf_cv;
1773static SV *slf_arg0;
1774static SV *slf_arg1;
1775static SV *slf_arg2;
1776static I32 slf_ax; /* top of stack, for restore */
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP * 2343static SV *
1782pp_restore (pTHX) 2344coro_waitarray_new (pTHX_ int count)
1783{ 2345{
1784 SV **SP = PL_stack_base + slf_ax; 2346 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2347 AV *av = newAV ();
2348 SV **ary;
1785 2349
1786 PUSHMARK (SP); 2350 /* unfortunately, building manually saves memory */
2351 Newx (ary, 2, SV *);
2352 AvALLOC (av) = ary;
2353 /*AvARRAY (av) = ary;*/
2354 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2355 AvMAX (av) = 1;
2356 AvFILLp (av) = 0;
2357 ary [0] = newSViv (count);
1787 2358
1788 EXTEND (SP, 3); 2359 return newRV_noinc ((SV *)av);
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1792 PUSHs ((SV *)CvGV (slf_cv));
1793
1794 RETURNOP (slf_restore.op_first);
1795} 2360}
1796 2361
1797static void 2362/* semaphore */
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 {
1928 dSP;
1929 SV **bot = PL_stack_base + checkmark;
1930 int gimme = GIMME_V;
1931
1932 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1933
1934 /* make sure we put something on the stack in scalar context */
1935 if (gimme == G_SCALAR)
1936 {
1937 if (sp == bot)
1938 XPUSHs (&PL_sv_undef);
1939
1940 SP = bot + 1;
1941 }
1942
1943 PUTBACK;
1944 }
1945
1946 {
1947 struct coro *coro = SvSTATE_current;
1948
1949 if (expect_false (coro->throw))
1950 {
1951 SV *exception = sv_2mortal (coro->throw);
1952
1953 coro->throw = 0;
1954 sv_setsv (ERRSV, exception);
1955 croak (0);
1956 }
1957 }
1958
1959 return NORMAL;
1960}
1961
1962static void
1963api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1964{
1965 SV **arg = PL_stack_base + ax;
1966 int items = PL_stack_sp - arg + 1;
1967
1968 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1969
1970 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1971 && PL_op->op_ppaddr != pp_slf)
1972 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1973
1974#if 0
1975 if (items > 3)
1976 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1977#endif
1978
1979 CvFLAGS (cv) |= CVf_SLF;
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_CUSTOM;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1992 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1993 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1994 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1995
1996 PL_op->op_ppaddr = pp_slf;
1997 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1998
1999 PL_op = (OP *)&slf_restore;
2000}
2001
2002/*****************************************************************************/
2003 2363
2004static void 2364static void
2005coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2365coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2006{ 2366{
2007 SV *count_sv = AvARRAY (av)[0]; 2367 SV *count_sv = AvARRAY (av)[0];
… …
2019 AvARRAY (av)[0] = AvARRAY (av)[1]; 2379 AvARRAY (av)[0] = AvARRAY (av)[1];
2020 AvARRAY (av)[1] = count_sv; 2380 AvARRAY (av)[1] = count_sv;
2021 cb = av_shift (av); 2381 cb = av_shift (av);
2022 2382
2023 if (SvOBJECT (cb)) 2383 if (SvOBJECT (cb))
2384 {
2024 api_ready (aTHX_ cb); 2385 api_ready (aTHX_ cb);
2025 else 2386 --count;
2026 croak ("callbacks not yet supported"); 2387 }
2388 else if (SvTYPE (cb) == SVt_PVCV)
2389 {
2390 dSP;
2391 PUSHMARK (SP);
2392 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2393 PUTBACK;
2394 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2395 }
2027 2396
2028 SvREFCNT_dec (cb); 2397 SvREFCNT_dec (cb);
2029
2030 --count;
2031 } 2398 }
2032} 2399}
2033 2400
2034static void 2401static void
2035coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2402coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2037 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2404 /* call $sem->adjust (0) to possibly wake up some other waiters */
2038 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2405 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2039} 2406}
2040 2407
2041static int 2408static int
2042slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2409slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2043{ 2410{
2044 AV *av = (AV *)frame->data; 2411 AV *av = (AV *)frame->data;
2045 SV *count_sv = AvARRAY (av)[0]; 2412 SV *count_sv = AvARRAY (av)[0];
2046 2413
2414 /* if we are about to throw, don't actually acquire the lock, just throw */
2415 if (CORO_THROW)
2416 return 0;
2047 if (SvIVX (count_sv) > 0) 2417 else if (SvIVX (count_sv) > 0)
2048 { 2418 {
2049 SvSTATE_current->on_destroy = 0; 2419 SvSTATE_current->on_destroy = 0;
2420
2421 if (acquire)
2050 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2422 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2423 else
2424 coro_semaphore_adjust (aTHX_ av, 0);
2425
2051 return 0; 2426 return 0;
2052 } 2427 }
2053 else 2428 else
2054 { 2429 {
2055 int i; 2430 int i;
… …
2064 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2439 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2065 return 1; 2440 return 1;
2066 } 2441 }
2067} 2442}
2068 2443
2069static void 2444static int
2445slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2446{
2447 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2448}
2449
2450static int
2451slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2452{
2453 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2454}
2455
2456static void
2070slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2457slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2071{ 2458{
2072 AV *av = (AV *)SvRV (arg [0]); 2459 AV *av = (AV *)SvRV (arg [0]);
2073 2460
2074 if (SvIVX (AvARRAY (av)[0]) > 0) 2461 if (SvIVX (AvARRAY (av)[0]) > 0)
2075 { 2462 {
2076 frame->data = (void *)av; 2463 frame->data = (void *)av;
2077 frame->prepare = prepare_nop; 2464 frame->prepare = prepare_nop;
2078 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2079 } 2465 }
2080 else 2466 else
2081 { 2467 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2468 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083 2469
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2470 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule; 2471 frame->prepare = prepare_schedule;
2086 2472
2087 /* to avoid race conditions when a woken-up coro gets terminated */ 2473 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2474 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 assert (!SvSTATE_current->on_destroy);//D
2090 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2475 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2091 } 2476 }
2477}
2092 2478
2479static void
2480slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2481{
2482 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2093 frame->check = slf_check_semaphore_down; 2483 frame->check = slf_check_semaphore_down;
2484}
2094 2485
2486static void
2487slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2488{
2489 if (items >= 2)
2490 {
2491 /* callback form */
2492 AV *av = (AV *)SvRV (arg [0]);
2493 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2494
2495 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2496
2497 if (SvIVX (AvARRAY (av)[0]) > 0)
2498 coro_semaphore_adjust (aTHX_ av, 0);
2499
2500 frame->prepare = prepare_nop;
2501 frame->check = slf_check_nop;
2502 }
2503 else
2504 {
2505 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2506 frame->check = slf_check_semaphore_wait;
2507 }
2508}
2509
2510/* signal */
2511
2512static void
2513coro_signal_wake (pTHX_ AV *av, int count)
2514{
2515 SvIVX (AvARRAY (av)[0]) = 0;
2516
2517 /* now signal count waiters */
2518 while (count > 0 && AvFILLp (av) > 0)
2519 {
2520 SV *cb;
2521
2522 /* swap first two elements so we can shift a waiter */
2523 cb = AvARRAY (av)[0];
2524 AvARRAY (av)[0] = AvARRAY (av)[1];
2525 AvARRAY (av)[1] = cb;
2526
2527 cb = av_shift (av);
2528
2529 api_ready (aTHX_ cb);
2530 sv_setiv (cb, 0); /* signal waiter */
2531 SvREFCNT_dec (cb);
2532
2533 --count;
2534 }
2535}
2536
2537static int
2538slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2539{
2540 /* if we are about to throw, also stop waiting */
2541 return SvROK ((SV *)frame->data) && !CORO_THROW;
2542}
2543
2544static void
2545slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2546{
2547 AV *av = (AV *)SvRV (arg [0]);
2548
2549 if (SvIVX (AvARRAY (av)[0]))
2550 {
2551 SvIVX (AvARRAY (av)[0]) = 0;
2552 frame->prepare = prepare_nop;
2553 frame->check = slf_check_nop;
2554 }
2555 else
2556 {
2557 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2558
2559 av_push (av, waiter);
2560
2561 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2562 frame->prepare = prepare_schedule;
2563 frame->check = slf_check_signal_wait;
2564 }
2095} 2565}
2096 2566
2097/*****************************************************************************/ 2567/*****************************************************************************/
2568/* Coro::AIO */
2098 2569
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2570#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2100 2571
2101/* create a closure from XS, returns a code reference */ 2572/* helper storage struct */
2102/* the arg can be accessed via GENSUB_ARG from the callback */ 2573struct io_state
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{ 2574{
2107 CV *cv = (CV *)NEWSV (0, 0); 2575 int errorno;
2576 I32 laststype; /* U16 in 5.10.0 */
2577 int laststatval;
2578 Stat_t statcache;
2579};
2108 2580
2581static void
2582coro_aio_callback (pTHX_ CV *cv)
2583{
2584 dXSARGS;
2585 AV *state = (AV *)GENSUB_ARG;
2586 SV *coro = av_pop (state);
2587 SV *data_sv = newSV (sizeof (struct io_state));
2588
2589 av_extend (state, items - 1);
2590
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 2591 sv_upgrade (data_sv, SVt_PV);
2592 SvCUR_set (data_sv, sizeof (struct io_state));
2593 SvPOK_only (data_sv);
2110 2594
2111 CvANON_on (cv); 2595 {
2112 CvISXSUB_on (cv); 2596 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115 2597
2116 return newRV_noinc ((SV *)cv); 2598 data->errorno = errno;
2599 data->laststype = PL_laststype;
2600 data->laststatval = PL_laststatval;
2601 data->statcache = PL_statcache;
2602 }
2603
2604 /* now build the result vector out of all the parameters and the data_sv */
2605 {
2606 int i;
2607
2608 for (i = 0; i < items; ++i)
2609 av_push (state, SvREFCNT_inc_NN (ST (i)));
2610 }
2611
2612 av_push (state, data_sv);
2613
2614 api_ready (aTHX_ coro);
2615 SvREFCNT_dec (coro);
2616 SvREFCNT_dec ((AV *)state);
2617}
2618
2619static int
2620slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2621{
2622 AV *state = (AV *)frame->data;
2623
2624 /* if we are about to throw, return early */
2625 /* this does not cancel the aio request, but at least */
2626 /* it quickly returns */
2627 if (CORO_THROW)
2628 return 0;
2629
2630 /* one element that is an RV? repeat! */
2631 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2632 return 1;
2633
2634 /* restore status */
2635 {
2636 SV *data_sv = av_pop (state);
2637 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2638
2639 errno = data->errorno;
2640 PL_laststype = data->laststype;
2641 PL_laststatval = data->laststatval;
2642 PL_statcache = data->statcache;
2643
2644 SvREFCNT_dec (data_sv);
2645 }
2646
2647 /* push result values */
2648 {
2649 dSP;
2650 int i;
2651
2652 EXTEND (SP, AvFILLp (state) + 1);
2653 for (i = 0; i <= AvFILLp (state); ++i)
2654 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2655
2656 PUTBACK;
2657 }
2658
2659 return 0;
2660}
2661
2662static void
2663slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2664{
2665 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2666 SV *coro_hv = SvRV (coro_current);
2667 struct coro *coro = SvSTATE_hv (coro_hv);
2668
2669 /* put our coroutine id on the state arg */
2670 av_push (state, SvREFCNT_inc_NN (coro_hv));
2671
2672 /* first see whether we have a non-zero priority and set it as AIO prio */
2673 if (coro->prio)
2674 {
2675 dSP;
2676
2677 static SV *prio_cv;
2678 static SV *prio_sv;
2679
2680 if (expect_false (!prio_cv))
2681 {
2682 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2683 prio_sv = newSViv (0);
2684 }
2685
2686 PUSHMARK (SP);
2687 sv_setiv (prio_sv, coro->prio);
2688 XPUSHs (prio_sv);
2689
2690 PUTBACK;
2691 call_sv (prio_cv, G_VOID | G_DISCARD);
2692 }
2693
2694 /* now call the original request */
2695 {
2696 dSP;
2697 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2698 int i;
2699
2700 PUSHMARK (SP);
2701
2702 /* first push all args to the stack */
2703 EXTEND (SP, items + 1);
2704
2705 for (i = 0; i < items; ++i)
2706 PUSHs (arg [i]);
2707
2708 /* now push the callback closure */
2709 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2710
2711 /* now call the AIO function - we assume our request is uncancelable */
2712 PUTBACK;
2713 call_sv ((SV *)req, G_VOID | G_DISCARD);
2714 }
2715
2716 /* now that the requets is going, we loop toll we have a result */
2717 frame->data = (void *)state;
2718 frame->prepare = prepare_schedule;
2719 frame->check = slf_check_aio_req;
2720}
2721
2722static void
2723coro_aio_req_xs (pTHX_ CV *cv)
2724{
2725 dXSARGS;
2726
2727 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2728
2729 XSRETURN_EMPTY;
2117} 2730}
2118 2731
2119/*****************************************************************************/ 2732/*****************************************************************************/
2733
2734#if CORO_CLONE
2735# include "clone.c"
2736#endif
2120 2737
2121MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2738MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2122 2739
2123PROTOTYPES: DISABLE 2740PROTOTYPES: DISABLE
2124 2741
… …
2157 2774
2158 { 2775 {
2159 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2776 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2160 2777
2161 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2778 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2162 hv_store_ent (PL_custom_op_names, slf, 2779 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2163 newSVpv ("coro_slf", 0), 0);
2164 2780
2165 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2781 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2166 hv_store_ent (PL_custom_op_descs, slf, 2782 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2167 newSVpv ("coro schedule like function", 0), 0);
2168 } 2783 }
2169 2784
2170 coroapi.ver = CORO_API_VERSION; 2785 coroapi.ver = CORO_API_VERSION;
2171 coroapi.rev = CORO_API_REVISION; 2786 coroapi.rev = CORO_API_REVISION;
2172 2787
… …
2191 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2806 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2192} 2807}
2193 2808
2194SV * 2809SV *
2195new (char *klass, ...) 2810new (char *klass, ...)
2811 ALIAS:
2812 Coro::new = 1
2196 CODE: 2813 CODE:
2197{ 2814{
2198 struct coro *coro; 2815 struct coro *coro;
2199 MAGIC *mg; 2816 MAGIC *mg;
2200 HV *hv; 2817 HV *hv;
2818 CV *cb;
2201 int i; 2819 int i;
2820
2821 if (items > 1)
2822 {
2823 cb = coro_sv_2cv (aTHX_ ST (1));
2824
2825 if (!ix)
2826 {
2827 if (CvISXSUB (cb))
2828 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2829
2830 if (!CvROOT (cb))
2831 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2832 }
2833 }
2202 2834
2203 Newz (0, coro, 1, struct coro); 2835 Newz (0, coro, 1, struct coro);
2204 coro->args = newAV (); 2836 coro->args = newAV ();
2205 coro->flags = CF_NEW; 2837 coro->flags = CF_NEW;
2206 2838
… …
2211 coro->hv = hv = newHV (); 2843 coro->hv = hv = newHV ();
2212 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2844 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2213 mg->mg_flags |= MGf_DUP; 2845 mg->mg_flags |= MGf_DUP;
2214 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2846 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2215 2847
2848 if (items > 1)
2849 {
2216 av_extend (coro->args, items - 1); 2850 av_extend (coro->args, items - 1 + ix - 1);
2851
2852 if (ix)
2853 {
2854 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2855 cb = cv_coro_run;
2856 }
2857
2858 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2859
2217 for (i = 1; i < items; i++) 2860 for (i = 2; i < items; i++)
2218 av_push (coro->args, newSVsv (ST (i))); 2861 av_push (coro->args, newSVsv (ST (i)));
2862 }
2219} 2863}
2220 OUTPUT: 2864 OUTPUT:
2221 RETVAL 2865 RETVAL
2222
2223void
2224_set_stacklevel (...)
2225 CODE:
2226 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2227 2866
2228void 2867void
2229transfer (...) 2868transfer (...)
2230 PROTOTYPE: $$ 2869 PROTOTYPE: $$
2231 CODE: 2870 CODE:
… …
2241void 2880void
2242_exit (int code) 2881_exit (int code)
2243 PROTOTYPE: $ 2882 PROTOTYPE: $
2244 CODE: 2883 CODE:
2245 _exit (code); 2884 _exit (code);
2885
2886#if CORO_CLONE
2887
2888SV *
2889clone (Coro::State coro)
2890 CODE:
2891{
2892 struct coro *ncoro = coro_clone (coro);
2893 MAGIC *mg;
2894 /* TODO: too much duplication */
2895 ncoro->hv = newHV ();
2896 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2897 mg->mg_flags |= MGf_DUP;
2898 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2899}
2900 OUTPUT:
2901 RETVAL
2902
2903#endif
2246 2904
2247int 2905int
2248cctx_stacksize (int new_stacksize = 0) 2906cctx_stacksize (int new_stacksize = 0)
2249 PROTOTYPE: ;$ 2907 PROTOTYPE: ;$
2250 CODE: 2908 CODE:
… …
2355 3013
2356void 3014void
2357throw (Coro::State self, SV *throw = &PL_sv_undef) 3015throw (Coro::State self, SV *throw = &PL_sv_undef)
2358 PROTOTYPE: $;$ 3016 PROTOTYPE: $;$
2359 CODE: 3017 CODE:
3018{
3019 struct coro *current = SvSTATE_current;
3020 SV **throwp = self == current ? &CORO_THROW : &self->except;
2360 SvREFCNT_dec (self->throw); 3021 SvREFCNT_dec (*throwp);
2361 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3022 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3023}
2362 3024
2363void 3025void
2364api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3026api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2365 PROTOTYPE: $;$ 3027 PROTOTYPE: $;$
2366 C_ARGS: aTHX_ coro, flags 3028 C_ARGS: aTHX_ coro, flags
… …
2415 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3077 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2416 3078
2417 SV *tmp = *src; *src = *dst; *dst = tmp; 3079 SV *tmp = *src; *src = *dst; *dst = tmp;
2418 } 3080 }
2419 3081
3082
2420MODULE = Coro::State PACKAGE = Coro 3083MODULE = Coro::State PACKAGE = Coro
2421 3084
2422BOOT: 3085BOOT:
2423{ 3086{
2424 int i; 3087 int i;
2425 3088
2426 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2427 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3089 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2428 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3090 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2429 3091 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3092 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2430 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3093 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2431 SvREADONLY_on (coro_current); 3094 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3095 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3096 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3097
3098 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3099 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3100 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3101 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2432 3102
2433 coro_stash = gv_stashpv ("Coro", TRUE); 3103 coro_stash = gv_stashpv ("Coro", TRUE);
2434 3104
2435 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3105 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2436 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3106 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2444 3114
2445 { 3115 {
2446 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3116 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2447 3117
2448 coroapi.schedule = api_schedule; 3118 coroapi.schedule = api_schedule;
3119 coroapi.schedule_to = api_schedule_to;
2449 coroapi.cede = api_cede; 3120 coroapi.cede = api_cede;
2450 coroapi.cede_notself = api_cede_notself; 3121 coroapi.cede_notself = api_cede_notself;
2451 coroapi.ready = api_ready; 3122 coroapi.ready = api_ready;
2452 coroapi.is_ready = api_is_ready; 3123 coroapi.is_ready = api_is_ready;
2453 coroapi.nready = coro_nready; 3124 coroapi.nready = coro_nready;
2454 coroapi.current = coro_current; 3125 coroapi.current = coro_current;
2455 3126
2456 GCoroAPI = &coroapi; 3127 /*GCoroAPI = &coroapi;*/
2457 sv_setiv (sv, (IV)&coroapi); 3128 sv_setiv (sv, (IV)&coroapi);
2458 SvREADONLY_on (sv); 3129 SvREADONLY_on (sv);
2459 } 3130 }
2460} 3131}
3132
3133void
3134terminate (...)
3135 CODE:
3136 CORO_EXECUTE_SLF_XS (slf_init_terminate);
2461 3137
2462void 3138void
2463schedule (...) 3139schedule (...)
2464 CODE: 3140 CODE:
2465 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3141 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2466 3142
2467void 3143void
3144schedule_to (...)
3145 CODE:
3146 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3147
3148void
3149cede_to (...)
3150 CODE:
3151 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3152
3153void
2468cede (...) 3154cede (...)
2469 CODE: 3155 CODE:
2470 CORO_EXECUTE_SLF_XS (slf_init_cede); 3156 CORO_EXECUTE_SLF_XS (slf_init_cede);
2471 3157
2472void 3158void
2473cede_notself (...) 3159cede_notself (...)
2474 CODE: 3160 CODE:
2475 CORO_EXECUTE_SLF_XS (slf_init_cede_notself); 3161 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3162
3163void
3164_cancel (Coro::State self)
3165 CODE:
3166 coro_state_destroy (aTHX_ self);
3167 coro_call_on_destroy (aTHX_ self);
2476 3168
2477void 3169void
2478_set_current (SV *current) 3170_set_current (SV *current)
2479 PROTOTYPE: $ 3171 PROTOTYPE: $
2480 CODE: 3172 CODE:
… …
2525 CODE: 3217 CODE:
2526 RETVAL = coro_nready; 3218 RETVAL = coro_nready;
2527 OUTPUT: 3219 OUTPUT:
2528 RETVAL 3220 RETVAL
2529 3221
2530# for async_pool speedup
2531void 3222void
2532_pool_1 (SV *cb) 3223_pool_handler (...)
2533 CODE: 3224 CODE:
2534{ 3225 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv ((SV *)hv);
2537 AV *defav = GvAV (PL_defgv);
2538 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2539 AV *invoke_av;
2540 int i, len;
2541
2542 if (!invoke)
2543 {
2544 SV *old = PL_diehook;
2545 PL_diehook = 0;
2546 SvREFCNT_dec (old);
2547 croak ("\3async_pool terminate\2\n");
2548 }
2549
2550 SvREFCNT_dec (coro->saved_deffh);
2551 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2552
2553 hv_store (hv, "desc", sizeof ("desc") - 1,
2554 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2555
2556 invoke_av = (AV *)SvRV (invoke);
2557 len = av_len (invoke_av);
2558
2559 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2560
2561 if (len > 0)
2562 {
2563 av_fill (defav, len - 1);
2564 for (i = 0; i < len; ++i)
2565 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2566 }
2567}
2568 3226
2569void 3227void
2570_pool_2 (SV *cb) 3228async_pool (SV *cv, ...)
2571 CODE:
2572{
2573 struct coro *coro = SvSTATE_current;
2574
2575 sv_setsv (cb, &PL_sv_undef);
2576
2577 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2578 coro->saved_deffh = 0;
2579
2580 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2581 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2582 {
2583 SV *old = PL_diehook;
2584 PL_diehook = 0;
2585 SvREFCNT_dec (old);
2586 croak ("\3async_pool terminate\2\n");
2587 }
2588
2589 av_clear (GvAV (PL_defgv));
2590 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2591 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2592
2593 coro->prio = 0;
2594
2595 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2596 api_trace (aTHX_ coro_current, 0);
2597
2598 av_push (av_async_pool, newSVsv (coro_current));
2599}
2600
2601
2602MODULE = Coro::State PACKAGE = Coro::AIO
2603
2604void
2605_get_state (SV *self)
2606 PROTOTYPE: $ 3229 PROTOTYPE: &@
2607 PPCODE: 3230 PPCODE:
2608{ 3231{
2609 AV *defav = GvAV (PL_defgv); 3232 HV *hv = (HV *)av_pop (av_async_pool);
2610 AV *av = newAV (); 3233 AV *av = newAV ();
3234 SV *cb = ST (0);
2611 int i; 3235 int i;
2612 SV *data_sv = newSV (sizeof (struct io_state));
2613 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2614 SvCUR_set (data_sv, sizeof (struct io_state));
2615 SvPOK_only (data_sv);
2616 3236
2617 data->errorno = errno; 3237 av_extend (av, items - 2);
2618 data->laststype = PL_laststype; 3238 for (i = 1; i < items; ++i)
2619 data->laststatval = PL_laststatval;
2620 data->statcache = PL_statcache;
2621
2622 av_extend (av, AvFILLp (defav) + 1 + 1);
2623
2624 for (i = 0; i <= AvFILLp (defav); ++i)
2625 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3239 av_push (av, SvREFCNT_inc_NN (ST (i)));
2626 3240
2627 av_push (av, data_sv); 3241 if ((SV *)hv == &PL_sv_undef)
2628
2629 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2630
2631 api_ready (aTHX_ self);
2632}
2633
2634void
2635_set_state (SV *state)
2636 PROTOTYPE: $
2637 PPCODE:
2638{
2639 AV *av = (AV *)SvRV (state);
2640 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2641 int i;
2642
2643 errno = data->errorno;
2644 PL_laststype = data->laststype;
2645 PL_laststatval = data->laststatval;
2646 PL_statcache = data->statcache;
2647
2648 EXTEND (SP, AvFILLp (av));
2649 for (i = 0; i < AvFILLp (av); ++i)
2650 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2651}
2652
2653
2654MODULE = Coro::State PACKAGE = Coro::AnyEvent
2655
2656BOOT:
2657 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2658
2659void
2660_schedule (...)
2661 CODE:
2662{
2663 static int incede;
2664
2665 api_cede_notself (aTHX);
2666
2667 ++incede;
2668 while (coro_nready >= incede && api_cede (aTHX))
2669 ;
2670
2671 sv_setsv (sv_activity, &PL_sv_undef);
2672 if (coro_nready >= incede)
2673 { 3242 {
2674 PUSHMARK (SP); 3243 PUSHMARK (SP);
3244 EXTEND (SP, 2);
3245 PUSHs (sv_Coro);
3246 PUSHs ((SV *)cv_pool_handler);
2675 PUTBACK; 3247 PUTBACK;
2676 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3248 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2677 SPAGAIN; 3249 SPAGAIN;
3250
3251 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2678 } 3252 }
2679 3253
2680 --incede; 3254 {
3255 struct coro *coro = SvSTATE_hv (hv);
3256
3257 assert (!coro->invoke_cb);
3258 assert (!coro->invoke_av);
3259 coro->invoke_cb = SvREFCNT_inc (cb);
3260 coro->invoke_av = av;
3261 }
3262
3263 api_ready (aTHX_ (SV *)hv);
3264
3265 if (GIMME_V != G_VOID)
3266 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3267 else
3268 SvREFCNT_dec (hv);
2681} 3269}
3270
3271SV *
3272rouse_cb ()
3273 PROTOTYPE:
3274 CODE:
3275 RETVAL = coro_new_rouse_cb (aTHX);
3276 OUTPUT:
3277 RETVAL
3278
3279void
3280rouse_wait (...)
3281 PROTOTYPE: ;$
3282 PPCODE:
3283 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2682 3284
2683 3285
2684MODULE = Coro::State PACKAGE = PerlIO::cede 3286MODULE = Coro::State PACKAGE = PerlIO::cede
2685 3287
2686BOOT: 3288BOOT:
2687 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3289 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2688 3290
3291
2689MODULE = Coro::State PACKAGE = Coro::Semaphore 3292MODULE = Coro::State PACKAGE = Coro::Semaphore
2690 3293
2691SV * 3294SV *
2692new (SV *klass, SV *count_ = 0) 3295new (SV *klass, SV *count = 0)
2693 CODE: 3296 CODE:
2694{ 3297 RETVAL = sv_bless (
2695 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3298 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2696 AV *av = newAV (); 3299 GvSTASH (CvGV (cv))
2697 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3300 );
2698 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3301 OUTPUT:
2699} 3302 RETVAL
3303
3304# helper for Coro::Channel
3305SV *
3306_alloc (int count)
3307 CODE:
3308 RETVAL = coro_waitarray_new (aTHX_ count);
2700 OUTPUT: 3309 OUTPUT:
2701 RETVAL 3310 RETVAL
2702 3311
2703SV * 3312SV *
2704count (SV *self) 3313count (SV *self)
… …
2713 adjust = 1 3322 adjust = 1
2714 CODE: 3323 CODE:
2715 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3324 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2716 3325
2717void 3326void
2718down (SV *self) 3327down (...)
2719 CODE: 3328 CODE:
2720 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3329 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3330
3331void
3332wait (...)
3333 CODE:
3334 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2721 3335
2722void 3336void
2723try (SV *self) 3337try (SV *self)
2724 PPCODE: 3338 PPCODE:
2725{ 3339{
… …
2737 XSRETURN_NO; 3351 XSRETURN_NO;
2738} 3352}
2739 3353
2740void 3354void
2741waiters (SV *self) 3355waiters (SV *self)
2742 CODE: 3356 PPCODE:
2743{ 3357{
2744 AV *av = (AV *)SvRV (self); 3358 AV *av = (AV *)SvRV (self);
3359 int wcount = AvFILLp (av) + 1 - 1;
2745 3360
2746 if (GIMME_V == G_SCALAR) 3361 if (GIMME_V == G_SCALAR)
2747 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3362 XPUSHs (sv_2mortal (newSViv (wcount)));
2748 else 3363 else
2749 { 3364 {
2750 int i; 3365 int i;
2751 EXTEND (SP, AvFILLp (av) + 1 - 1); 3366 EXTEND (SP, wcount);
2752 for (i = 1; i <= AvFILLp (av); ++i) 3367 for (i = 1; i <= wcount; ++i)
2753 PUSHs (newSVsv (AvARRAY (av)[i])); 3368 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2754 } 3369 }
2755} 3370}
2756 3371
3372MODULE = Coro::State PACKAGE = Coro::Signal
3373
3374SV *
3375new (SV *klass)
3376 CODE:
3377 RETVAL = sv_bless (
3378 coro_waitarray_new (aTHX_ 0),
3379 GvSTASH (CvGV (cv))
3380 );
3381 OUTPUT:
3382 RETVAL
3383
3384void
3385wait (...)
3386 CODE:
3387 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3388
3389void
3390broadcast (SV *self)
3391 CODE:
3392{
3393 AV *av = (AV *)SvRV (self);
3394 coro_signal_wake (aTHX_ av, AvFILLp (av));
3395}
3396
3397void
3398send (SV *self)
3399 CODE:
3400{
3401 AV *av = (AV *)SvRV (self);
3402
3403 if (AvFILLp (av))
3404 coro_signal_wake (aTHX_ av, 1);
3405 else
3406 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3407}
3408
3409IV
3410awaited (SV *self)
3411 CODE:
3412 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3413 OUTPUT:
3414 RETVAL
3415
3416
3417MODULE = Coro::State PACKAGE = Coro::AnyEvent
3418
3419BOOT:
3420 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3421
3422void
3423_schedule (...)
3424 CODE:
3425{
3426 static int incede;
3427
3428 api_cede_notself (aTHX);
3429
3430 ++incede;
3431 while (coro_nready >= incede && api_cede (aTHX))
3432 ;
3433
3434 sv_setsv (sv_activity, &PL_sv_undef);
3435 if (coro_nready >= incede)
3436 {
3437 PUSHMARK (SP);
3438 PUTBACK;
3439 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3440 }
3441
3442 --incede;
3443}
3444
3445
3446MODULE = Coro::State PACKAGE = Coro::AIO
3447
3448void
3449_register (char *target, char *proto, SV *req)
3450 CODE:
3451{
3452 CV *req_cv = coro_sv_2cv (aTHX_ req);
3453 /* newXSproto doesn't return the CV on 5.8 */
3454 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3455 sv_setpv ((SV *)slf_cv, proto);
3456 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3457}
3458

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