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Comparing Coro/Coro/State.xs (file contents):
Revision 1.275 by root, Sat Nov 15 06:26:52 2008 UTC vs.
Revision 1.315 by root, Thu Nov 20 05:25:17 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
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
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
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
100 106
101/* 5.8.7 */ 107/* 5.8.7 */
102#ifndef SvRV_set 108#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 109# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 110#endif
… …
117#endif 123#endif
118 124
119/* The next macros try to return the current stack pointer, in an as 125/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 126 * portable way as possible. */
121#if __GNUC__ >= 4 127#if __GNUC__ >= 4
128# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 129# define STACKLEVEL __builtin_frame_address (0)
123#else 130#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 131# define dSTACKLEVEL volatile void *stacklevel
132# define STACKLEVEL ((void *)&stacklevel)
125#endif 133#endif
126 134
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 135#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 136
129#if __GNUC__ >= 3 137#if __GNUC__ >= 3
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 148#define expect_true(expr) expect ((expr) != 0, 1)
141 149
142#define NOINLINE attribute ((noinline)) 150#define NOINLINE attribute ((noinline))
143 151
144#include "CoroAPI.h" 152#include "CoroAPI.h"
153#define GCoroAPI (&coroapi) /* very sneaky */
145 154
146#ifdef USE_ITHREADS 155#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 156# if CORO_PTHREAD
152static void *coro_thx; 157static void *coro_thx;
153# endif 158# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 159#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 160
177static double (*nvtime)(); /* so why doesn't it take void? */ 161static double (*nvtime)(); /* so why doesn't it take void? */
162
163/* we hijack an hopefully unused CV flag for our purposes */
164#define CVf_SLF 0x4000
165static OP *pp_slf (pTHX);
178 166
179static U32 cctx_gen; 167static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 171static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 174
188static GV *irsgv; /* $/ */ 175static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 176static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 177static SV *rv_diehook;
191static SV *rv_warnhook; 178static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 179static HV *hv_sig; /* %SIG */
193 180
194/* async_pool helper stuff */ 181/* async_pool helper stuff */
195static SV *sv_pool_rss; 182static SV *sv_pool_rss;
196static SV *sv_pool_size; 183static SV *sv_pool_size;
184static SV *sv_async_pool_idle;
197static AV *av_async_pool; 185static AV *av_async_pool;
186static SV *sv_Coro;
187static CV *cv_pool_handler;
188static CV *cv_coro_state_new;
198 189
199/* Coro::AnyEvent */ 190/* Coro::AnyEvent */
200static SV *sv_activity; 191static SV *sv_activity;
201 192
202static struct coro_cctx *cctx_first; 193static struct coro_cctx *cctx_first;
… …
257/* this is a structure representing a perl-level coroutine */ 248/* this is a structure representing a perl-level coroutine */
258struct coro { 249struct coro {
259 /* the C coroutine allocated to this perl coroutine, if any */ 250 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 251 coro_cctx *cctx;
261 252
262 /* process data */ 253 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 254 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 255 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 256 perl_slots *slot; /* basically the saved sp */
266 257
258 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 259 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */ 260 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 261 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 262 HV *hv; /* the perl hash associated with this coro, if any */
263 void (*on_destroy)(pTHX_ struct coro *coro);
271 264
272 /* statistics */ 265 /* statistics */
273 int usecount; /* number of transfers to this coro */ 266 int usecount; /* number of transfers to this coro */
274 267
275 /* coro process data */ 268 /* coro process data */
276 int prio; 269 int prio;
277 SV *throw; /* exception to be thrown */ 270 SV *except; /* exception to be thrown */
271 SV *rouse_cb;
278 272
279 /* async_pool */ 273 /* async_pool */
280 SV *saved_deffh; 274 SV *saved_deffh;
275 SV *invoke_cb;
276 AV *invoke_av;
281 277
282 /* linked list */ 278 /* linked list */
283 struct coro *next, *prev; 279 struct coro *next, *prev;
284}; 280};
285 281
286typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 283typedef struct coro *Coro__State_or_hashref;
288 284
285/* the following variables are effectively part of the perl context */
286/* and get copied between struct coro and these variables */
287/* the mainr easonw e don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 288static struct CoroSLF slf_frame; /* the current slf frame */
290 289
291/** Coro ********************************************************************/ 290/** Coro ********************************************************************/
292 291
293#define PRIO_MAX 3 292#define PRIO_MAX 3
… …
299 298
300/* for Coro.pm */ 299/* for Coro.pm */
301static SV *coro_current; 300static SV *coro_current;
302static SV *coro_readyhook; 301static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 302static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
303static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready 305#define coro_nready coroapi.nready
306 306
307/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
308 308
… …
332#if PERL_VERSION_ATLEAST (5,10,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create); 334 get_hv (name, create);
335#endif 335#endif
336 return get_hv (name, create); 336 return get_hv (name, create);
337}
338
339/* may croak */
340INLINE CV *
341coro_sv_2cv (pTHX_ SV *sv)
342{
343 HV *st;
344 GV *gvp;
345 return sv_2cv (sv, &st, &gvp, 0);
337} 346}
338 347
339static AV * 348static AV *
340coro_clone_padlist (pTHX_ CV *cv) 349coro_clone_padlist (pTHX_ CV *cv)
341{ 350{
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 404 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 405
397 return 0; 406 return 0;
398} 407}
399 408
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 409#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 410#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 411
403static MGVTBL coro_cv_vtbl = { 412static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 413 0, 0, 0, 0,
405 coro_cv_free 414 coro_cv_free
406}; 415};
407 416
417#define CORO_MAGIC_NN(sv, type) \
418 (expect_true (SvMAGIC (sv)->mg_type == type) \
419 ? SvMAGIC (sv) \
420 : mg_find (sv, type))
421
408#define CORO_MAGIC(sv, type) \ 422#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 423 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 424 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 425 : 0)
414 426
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 427#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 428#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417 429
418INLINE struct coro * 430INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 431SvSTATE_ (pTHX_ SV *coro)
420{ 432{
421 HV *stash; 433 HV *stash;
… …
438 mg = CORO_MAGIC_state (coro); 450 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 451 return (struct coro *)mg->mg_ptr;
440} 452}
441 453
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 454#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
455
456/* faster than SvSTATE, but expects a coroutine hv */
457#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
458#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 459
444/* the next two functions merely cache the padlists */ 460/* the next two functions merely cache the padlists */
445static void 461static void
446get_padlist (pTHX_ CV *cv) 462get_padlist (pTHX_ CV *cv)
447{ 463{
… …
453 else 469 else
454 { 470 {
455#if CORO_PREFER_PERL_FUNCTIONS 471#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 472 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 473 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 474 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 475 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 476 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 477 SvREFCNT_dec (cp);
462#else 478#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 479 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
515 } 531 }
516 532
517 PUTBACK; 533 PUTBACK;
518 } 534 }
519 535
520 slf_frame = c->slf_frame; 536 slf_frame = c->slf_frame;
537 CORO_THROW = c->except;
521} 538}
522 539
523static void 540static void
524save_perl (pTHX_ Coro__State c) 541save_perl (pTHX_ Coro__State c)
525{ 542{
543 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 544 c->slf_frame = slf_frame;
527 545
528 { 546 {
529 dSP; 547 dSP;
530 I32 cxix = cxstack_ix; 548 I32 cxix = cxstack_ix;
… …
605 * of perl.c:init_stacks, except that it uses less memory 623 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 624 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 625 * not usually need a lot of stackspace.
608 */ 626 */
609#if CORO_PREFER_PERL_FUNCTIONS 627#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 628# define coro_init_stacks(thx) init_stacks ()
611#else 629#else
612static void 630static void
613coro_init_stacks (pTHX) 631coro_init_stacks (pTHX)
614{ 632{
615 PL_curstackinfo = new_stackinfo(32, 8); 633 PL_curstackinfo = new_stackinfo(32, 8);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 696#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 697 Safefree (PL_retstack);
680#endif 698#endif
681} 699}
682 700
701#define CORO_RSS \
702 rss += sizeof (SYM (curstackinfo)); \
703 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
705 rss += SYM (tmps_max) * sizeof (SV *); \
706 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
707 rss += SYM (scopestack_max) * sizeof (I32); \
708 rss += SYM (savestack_max) * sizeof (ANY);
709
683static size_t 710static size_t
684coro_rss (pTHX_ struct coro *coro) 711coro_rss (pTHX_ struct coro *coro)
685{ 712{
686 size_t rss = sizeof (*coro); 713 size_t rss = sizeof (*coro);
687 714
688 if (coro->mainstack) 715 if (coro->mainstack)
689 { 716 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 717 if (coro->flags & CF_RUNNING)
694 { 718 {
695 slot = &tmp_slot; 719 #define SYM(sym) PL_ ## sym
696 720 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 721 #undef SYM
700 } 722 }
701 else 723 else
702 slot = coro->slot;
703
704 if (slot)
705 { 724 {
706 rss += sizeof (slot->curstackinfo); 725 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 726 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 727 #undef SYM
709 rss += slot->tmps_max * sizeof (SV *);
710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
711 rss += slot->scopestack_max * sizeof (I32);
712 rss += slot->savestack_max * sizeof (ANY);
713
714#if !PERL_VERSION_ATLEAST (5,10,0)
715 rss += slot->retstack_max * sizeof (OP *);
716#endif
717 } 728 }
718 } 729 }
719 730
720 return rss; 731 return rss;
721} 732}
… …
811 822
812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 823 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813} 824}
814 825
815static void 826static void
816prepare_nop (aTHX_ struct coro_transfer_args *ta) 827prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{ 828{
818 /* kind of mega-hacky, but works */ 829 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta; 830 ta->next = ta->prev = (struct coro *)ta;
820} 831}
821 832
822static int 833static int
823slf_check_nop (aTHX) 834slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 835{
825 return 0; 836 return 0;
826} 837}
827 838
828static void 839static UNOP coro_setup_op;
840
841static void NOINLINE /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 842coro_setup (pTHX_ struct coro *coro)
830{ 843{
831 /* 844 /*
832 * emulate part of the perl startup here. 845 * emulate part of the perl startup here.
833 */ 846 */
… …
860 { 873 {
861 dSP; 874 dSP;
862 UNOP myop; 875 UNOP myop;
863 876
864 Zero (&myop, 1, UNOP); 877 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 878 myop.op_next = Nullop;
879 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 880 myop.op_flags = OPf_WANT_VOID;
867 881
868 PUSHMARK (SP); 882 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 883 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 884 PUTBACK;
871 PL_op = (OP *)&myop; 885 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 886 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 887 }
875 888
876 /* this newly created coroutine might be run on an existing cctx which most 889 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 890 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 891 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 892 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 */ 893 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
894
895 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
896 coro_setup_op.op_next = PL_op;
897 coro_setup_op.op_type = OP_CUSTOM;
898 coro_setup_op.op_ppaddr = pp_slf;
899 /* no flags etc. required, as an init function won't be called */
900
901 PL_op = (OP *)&coro_setup_op;
902
903 /* copy throw, in case it was set before coro_setup */
904 CORO_THROW = coro->except;
881} 905}
882 906
883static void 907static void
884coro_destruct (pTHX_ struct coro *coro) 908coro_destruct (pTHX_ struct coro *coro)
885{ 909{
… …
909 933
910 SvREFCNT_dec (PL_diehook); 934 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook); 935 SvREFCNT_dec (PL_warnhook);
912 936
913 SvREFCNT_dec (coro->saved_deffh); 937 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 938 SvREFCNT_dec (coro->rouse_cb);
939 SvREFCNT_dec (coro->invoke_cb);
940 SvREFCNT_dec (coro->invoke_av);
915 941
916 coro_destruct_stacks (aTHX); 942 coro_destruct_stacks (aTHX);
917} 943}
918 944
919INLINE void 945INLINE void
… …
929static int 955static int
930runops_trace (pTHX) 956runops_trace (pTHX)
931{ 957{
932 COP *oldcop = 0; 958 COP *oldcop = 0;
933 int oldcxix = -2; 959 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 960 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx; 961 coro_cctx *cctx = coro->cctx;
936 962
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 963 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 964 {
939 PERL_ASYNC_CHECK (); 965 PERL_ASYNC_CHECK ();
… …
1006 SAVETMPS; 1032 SAVETMPS;
1007 EXTEND (SP, 3); 1033 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1034 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1035 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1036 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1037 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK; 1038 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1039 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1014 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1040 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN; 1041 SPAGAIN;
1016 FREETMPS; 1042 FREETMPS;
… …
1048 1074
1049 TAINT_NOT; 1075 TAINT_NOT;
1050 return 0; 1076 return 0;
1051} 1077}
1052 1078
1079static struct coro_cctx *cctx_ssl_cctx;
1080static struct CoroSLF cctx_ssl_frame;
1081
1053static void 1082static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1083slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1084{
1056 ta->prev = (struct coro *)cctx; 1085 ta->prev = (struct coro *)cctx_ssl_cctx;
1057 ta->next = 0; 1086 ta->next = 0;
1058} 1087}
1059 1088
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1089static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1090slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */ 1091{
1063/* also initialises PL_top_env */ 1092 *frame = cctx_ssl_frame;
1093
1094 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1095}
1096
1097/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1064static void NOINLINE 1098static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx) 1099cctx_prepare (pTHX_ coro_cctx *cctx)
1066{ 1100{
1067 dSP;
1068 UNOP myop;
1069
1070 PL_top_env = &PL_start_env; 1101 PL_top_env = &PL_start_env;
1071 1102
1072 if (cctx->flags & CC_TRACE) 1103 if (cctx->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1104 PL_runops = runops_trace;
1074 1105
1075 Zero (&myop, 1, UNOP); 1106 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1107 * that can lead to creation of a new cctx */
1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1108 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1109 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1078 1110
1079 PUSHMARK (SP); 1111 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1112 cctx_ssl_cctx = cctx;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1113 cctx_ssl_frame = slf_frame;
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1114
1083 PUTBACK; 1115 slf_frame.prepare = slf_prepare_set_stacklevel;
1084 PL_op = (OP *)&myop; 1116 slf_frame.check = slf_check_set_stacklevel;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1117}
1088 1118
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1119/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1120INLINE void
1091transfer_tail (pTHX) 1121transfer_tail (pTHX)
1092{ 1122{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX); 1123 free_coro_mortal (aTHX);
1098 UNLOCK;
1099
1100 if (expect_false (next->throw))
1101 {
1102 SV *exception = sv_2mortal (next->throw);
1103
1104 next->throw = 0;
1105 sv_setsv (ERRSV, exception);
1106 croak (0);
1107 }
1108} 1124}
1109 1125
1110/* 1126/*
1111 * this is a _very_ stripped down perl interpreter ;) 1127 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1128 */
… …
1127 1143
1128 /* inject a fake subroutine call to cctx_init */ 1144 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1145 cctx_prepare (aTHX_ (coro_cctx *)arg);
1130 1146
1131 /* cctx_run is the alternative tail of transfer() */ 1147 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1148 transfer_tail (aTHX);
1134 1149
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1150 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1151 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1152 perl_run (PL_curinterp);
1153 /*
1154 * Unfortunately, there is no way to get at the return values of the
1155 * coro body here, as perl_run destroys these
1156 */
1138 1157
1139 /* 1158 /*
1140 * If perl-run returns we assume exit() was being called or the coro 1159 * If perl-run returns we assume exit() was being called or the coro
1141 * fell off the end, which seems to be the only valid (non-bug) 1160 * fell off the end, which seems to be the only valid (non-bug)
1142 * reason for perl_run to return. We try to exit by jumping to the 1161 * reason for perl_run to return. We try to exit by jumping to the
… …
1293/** coroutine switching *****************************************************/ 1312/** coroutine switching *****************************************************/
1294 1313
1295static void 1314static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1315transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1316{
1317 /* TODO: throwing up here is considered harmful */
1318
1298 if (expect_true (prev != next)) 1319 if (expect_true (prev != next))
1299 { 1320 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1321 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1322 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1302 1323
… …
1312#endif 1333#endif
1313 } 1334 }
1314} 1335}
1315 1336
1316/* always use the TRANSFER macro */ 1337/* always use the TRANSFER macro */
1317static void NOINLINE 1338static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1339transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1340{
1320 dSTACKLEVEL; 1341 dSTACKLEVEL;
1321 1342
1322 /* sometimes transfer is only called to set idle_sp */ 1343 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1344 if (expect_false (!next))
1324 { 1345 {
1325 ((coro_cctx *)prev)->idle_sp = stacklevel; 1346 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1347 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1348 }
1328 else if (expect_true (prev != next)) 1349 else if (expect_true (prev != next))
1329 { 1350 {
1330 coro_cctx *prev__cctx; 1351 coro_cctx *prev__cctx;
… …
1337 prev->flags |= CF_RUNNING; 1358 prev->flags |= CF_RUNNING;
1338 } 1359 }
1339 1360
1340 prev->flags &= ~CF_RUNNING; 1361 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1362 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1363
1345 /* first get rid of the old state */ 1364 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1365 save_perl (aTHX_ prev);
1347 1366
1348 if (expect_false (next->flags & CF_NEW)) 1367 if (expect_false (next->flags & CF_NEW))
… …
1357 1376
1358 prev__cctx = prev->cctx; 1377 prev__cctx = prev->cctx;
1359 1378
1360 /* possibly untie and reuse the cctx */ 1379 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1380 if (expect_true (
1362 prev__cctx->idle_sp == stacklevel 1381 prev__cctx->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1382 && !(prev__cctx->flags & CC_TRACE)
1364 && !force_cctx 1383 && !force_cctx
1365 )) 1384 ))
1366 { 1385 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1386 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
… …
1381 ++next->usecount; 1400 ++next->usecount;
1382 1401
1383 if (expect_true (!next->cctx)) 1402 if (expect_true (!next->cctx))
1384 next->cctx = cctx_get (aTHX); 1403 next->cctx = cctx_get (aTHX);
1385 1404
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1387 transfer_next = next;
1388
1389 if (expect_false (prev__cctx != next->cctx)) 1405 if (expect_false (prev__cctx != next->cctx))
1390 { 1406 {
1391 prev__cctx->top_env = PL_top_env; 1407 prev__cctx->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1408 PL_top_env = next->cctx->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1409 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
… …
1406coro_state_destroy (pTHX_ struct coro *coro) 1422coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1423{
1408 if (coro->flags & CF_DESTROYED) 1424 if (coro->flags & CF_DESTROYED)
1409 return 0; 1425 return 0;
1410 1426
1427 if (coro->on_destroy)
1428 coro->on_destroy (aTHX_ coro);
1429
1411 coro->flags |= CF_DESTROYED; 1430 coro->flags |= CF_DESTROYED;
1412 1431
1413 if (coro->flags & CF_READY) 1432 if (coro->flags & CF_READY)
1414 { 1433 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1434 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1435 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1436 --coro_nready;
1419 UNLOCK;
1420 } 1437 }
1421 else 1438 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1439 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423 1440
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1441 if (coro->mainstack && coro->mainstack != main_mainstack)
… …
1436 1453
1437 coro->slot = 0; 1454 coro->slot = 0;
1438 } 1455 }
1439 1456
1440 cctx_destroy (coro->cctx); 1457 cctx_destroy (coro->cctx);
1458 SvREFCNT_dec (coro->startcv);
1441 SvREFCNT_dec (coro->args); 1459 SvREFCNT_dec (coro->args);
1460 SvREFCNT_dec (CORO_THROW);
1442 1461
1443 if (coro->next) coro->next->prev = coro->prev; 1462 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1463 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1464 if (coro == coro_first) coro_first = coro->next;
1446 1465
… …
1500 1519
1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1520 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1502 TRANSFER (ta, 1); 1521 TRANSFER (ta, 1);
1503} 1522}
1504 1523
1524/*****************************************************************************/
1525/* gensub: simple closure generation utility */
1526
1527#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1528
1529/* create a closure from XS, returns a code reference */
1530/* the arg can be accessed via GENSUB_ARG from the callback */
1531/* the callback must use dXSARGS/XSRETURN */
1532static SV *
1533gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1534{
1535 CV *cv = (CV *)newSV (0);
1536
1537 sv_upgrade ((SV *)cv, SVt_PVCV);
1538
1539 CvANON_on (cv);
1540 CvISXSUB_on (cv);
1541 CvXSUB (cv) = xsub;
1542 GENSUB_ARG = arg;
1543
1544 return newRV_noinc ((SV *)cv);
1545}
1546
1505/** Coro ********************************************************************/ 1547/** Coro ********************************************************************/
1506 1548
1507static void 1549INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1550coro_enq (pTHX_ struct coro *coro)
1509{ 1551{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1552 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1511} 1553}
1512 1554
1513static SV * 1555INLINE SV *
1514coro_deq (pTHX) 1556coro_deq (pTHX)
1515{ 1557{
1516 int prio; 1558 int prio;
1517 1559
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1560 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1537 if (coro->flags & CF_READY) 1579 if (coro->flags & CF_READY)
1538 return 0; 1580 return 0;
1539 1581
1540 coro->flags |= CF_READY; 1582 coro->flags |= CF_READY;
1541 1583
1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1584 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1585 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546 1586
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1587 coro_enq (aTHX_ coro);
1548 ++coro_nready; 1588 ++coro_nready;
1549 1589
1550 UNLOCK;
1551
1552 if (sv_hook) 1590 if (sv_hook)
1553 { 1591 {
1554 dSP; 1592 dSP;
1555 1593
1556 ENTER; 1594 ENTER;
1557 SAVETMPS; 1595 SAVETMPS;
1558 1596
1559 PUSHMARK (SP); 1597 PUSHMARK (SP);
1560 PUTBACK; 1598 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD); 1599 call_sv (sv_hook, G_VOID | G_DISCARD);
1562 SPAGAIN;
1563 1600
1564 FREETMPS; 1601 FREETMPS;
1565 LEAVE; 1602 LEAVE;
1566 } 1603 }
1567 1604
… …
1582{ 1619{
1583 SV *prev_sv, *next_sv; 1620 SV *prev_sv, *next_sv;
1584 1621
1585 for (;;) 1622 for (;;)
1586 { 1623 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX); 1624 next_sv = coro_deq (aTHX);
1589 1625
1590 /* nothing to schedule: call the idle handler */ 1626 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv)) 1627 if (expect_false (!next_sv))
1592 { 1628 {
1593 dSP; 1629 dSP;
1594 UNLOCK;
1595 1630
1596 ENTER; 1631 ENTER;
1597 SAVETMPS; 1632 SAVETMPS;
1598 1633
1599 PUSHMARK (SP); 1634 PUSHMARK (SP);
1600 PUTBACK; 1635 PUTBACK;
1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1636 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1602 SPAGAIN;
1603 1637
1604 FREETMPS; 1638 FREETMPS;
1605 LEAVE; 1639 LEAVE;
1606 continue; 1640 continue;
1607 } 1641 }
1608 1642
1609 ta->next = SvSTATE (next_sv); 1643 ta->next = SvSTATE_hv (next_sv);
1610 1644
1611 /* cannot transfer to destroyed coros, skip and look for next */ 1645 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED)) 1646 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 { 1647 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv); 1648 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */ 1649 /* coro_nready has already been taken care of by destroy */
1617 continue; 1650 continue;
1618 } 1651 }
1619 1652
1620 --coro_nready; 1653 --coro_nready;
1621 UNLOCK;
1622 break; 1654 break;
1623 } 1655 }
1624 1656
1625 /* free this only after the transfer */ 1657 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current); 1658 prev_sv = SvRV (coro_current);
1627 ta->prev = SvSTATE (prev_sv); 1659 ta->prev = SvSTATE_hv (prev_sv);
1628 TRANSFER_CHECK (*ta); 1660 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1661 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1630 ta->next->flags &= ~CF_READY; 1662 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1663 SvRV_set (coro_current, next_sv);
1632 1664
1633 LOCK;
1634 free_coro_mortal (aTHX); 1665 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1666 coro_mortal = prev_sv;
1636 UNLOCK;
1637} 1667}
1638 1668
1639INLINE void 1669INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1670prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1671{
… …
1720 else 1750 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1751 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1752 }
1723} 1753}
1724 1754
1725#if 0 1755/*****************************************************************************/
1756/* async pool handler */
1757
1726static int 1758static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1759slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1728{ 1760{
1729 AV *padlist; 1761 HV *hv = (HV *)SvRV (coro_current);
1730 AV *av = (AV *)mg->mg_obj; 1762 struct coro *coro = (struct coro *)frame->data;
1731 1763
1732 abort (); 1764 if (!coro->invoke_cb)
1765 return 1; /* loop till we have invoke */
1766 else
1767 {
1768 hv_store (hv, "desc", sizeof ("desc") - 1,
1769 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1770
1771 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1772
1773 {
1774 dSP;
1775 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1776 PUTBACK;
1777 }
1778
1779 SvREFCNT_dec (GvAV (PL_defgv));
1780 GvAV (PL_defgv) = coro->invoke_av;
1781 coro->invoke_av = 0;
1782
1783 return 0;
1784 }
1785}
1786
1787static void
1788slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1789{
1790 HV *hv = (HV *)SvRV (coro_current);
1791 struct coro *coro = SvSTATE_hv ((SV *)hv);
1792
1793 if (expect_true (coro->saved_deffh))
1794 {
1795 /* subsequent iteration */
1796 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1797 coro->saved_deffh = 0;
1798
1799 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1800 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1801 {
1802 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1803 coro->invoke_av = newAV ();
1804
1805 frame->prepare = prepare_nop;
1806 }
1807 else
1808 {
1809 av_clear (GvAV (PL_defgv));
1810 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1811
1812 coro->prio = 0;
1813
1814 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1815 api_trace (aTHX_ coro_current, 0);
1816
1817 frame->prepare = prepare_schedule;
1818 av_push (av_async_pool, SvREFCNT_inc (hv));
1819 }
1820 }
1821 else
1822 {
1823 /* first iteration, simply fall through */
1824 frame->prepare = prepare_nop;
1825 }
1826
1827 frame->check = slf_check_pool_handler;
1828 frame->data = (void *)coro;
1829}
1830
1831/*****************************************************************************/
1832/* rouse callback */
1833
1834#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1835
1836static void
1837coro_rouse_callback (pTHX_ CV *cv)
1838{
1839 dXSARGS;
1840 SV *data = (SV *)GENSUB_ARG;
1841
1842 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1843 {
1844 /* first call, set args */
1845 AV *av = newAV ();
1846 SV *coro = SvRV (data);
1847
1848 SvRV_set (data, (SV *)av);
1849 api_ready (aTHX_ coro);
1850 SvREFCNT_dec (coro);
1851
1852 /* better take a full copy of the arguments */
1853 while (items--)
1854 av_store (av, items, newSVsv (ST (items)));
1855 }
1856
1857 XSRETURN_EMPTY;
1858}
1859
1860static int
1861slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1862{
1863 SV *data = (SV *)frame->data;
1864
1865 if (CORO_THROW)
1866 return 0;
1867
1868 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1869 return 1;
1870
1871 /* now push all results on the stack */
1872 {
1873 dSP;
1874 AV *av = (AV *)SvRV (data);
1875 int i;
1876
1877 EXTEND (SP, AvFILLp (av) + 1);
1878 for (i = 0; i <= AvFILLp (av); ++i)
1879 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1880
1881 /* we have stolen the elements, so ste length to zero and free */
1882 AvFILLp (av) = -1;
1883 av_undef (av);
1884
1885 PUTBACK;
1886 }
1733 1887
1734 return 0; 1888 return 0;
1735} 1889}
1736 1890
1737static MGVTBL coro_gensub_vtbl = { 1891static void
1738 0, 0, 0, 0, 1892slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 1893{
1740}; 1894 SV *cb;
1741#endif 1895
1896 if (items)
1897 cb = arg [0];
1898 else
1899 {
1900 struct coro *coro = SvSTATE_current;
1901
1902 if (!coro->rouse_cb)
1903 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1904
1905 cb = sv_2mortal (coro->rouse_cb);
1906 coro->rouse_cb = 0;
1907 }
1908
1909 if (!SvROK (cb)
1910 || SvTYPE (SvRV (cb)) != SVt_PVCV
1911 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1912 croak ("Coro::rouse_wait called with illegal callback argument,");
1913
1914 {
1915 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1916 SV *data = (SV *)GENSUB_ARG;
1917
1918 frame->data = (void *)data;
1919 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1920 frame->check = slf_check_rouse_wait;
1921 }
1922}
1923
1924static SV *
1925coro_new_rouse_cb (pTHX)
1926{
1927 HV *hv = (HV *)SvRV (coro_current);
1928 struct coro *coro = SvSTATE_hv (hv);
1929 SV *data = newRV_inc ((SV *)hv);
1930 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1931
1932 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1933 SvREFCNT_dec (data); /* magicext increases the refcount */
1934
1935 SvREFCNT_dec (coro->rouse_cb);
1936 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1937
1938 return cb;
1939}
1940
1941/*****************************************************************************/
1942/* schedule-like-function opcode (SLF) */
1943
1944static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1945static const CV *slf_cv;
1946static SV **slf_argv;
1947static int slf_argc, slf_arga; /* count, allocated */
1948static I32 slf_ax; /* top of stack, for restore */
1949
1950/* this restores the stack in the case we patched the entersub, to */
1951/* recreate the stack frame as perl will on following calls */
1952/* since entersub cleared the stack */
1953static OP *
1954pp_restore (pTHX)
1955{
1956 int i;
1957 SV **SP = PL_stack_base + slf_ax;
1958
1959 PUSHMARK (SP);
1960
1961 EXTEND (SP, slf_argc + 1);
1962
1963 for (i = 0; i < slf_argc; ++i)
1964 PUSHs (sv_2mortal (slf_argv [i]));
1965
1966 PUSHs ((SV *)CvGV (slf_cv));
1967
1968 RETURNOP (slf_restore.op_first);
1969}
1970
1971static void
1972slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1973{
1974 SV **arg = (SV **)slf_frame.data;
1975
1976 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1977}
1978
1979static void
1980slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1981{
1982 if (items != 2)
1983 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1984
1985 frame->prepare = slf_prepare_transfer;
1986 frame->check = slf_check_nop;
1987 frame->data = (void *)arg; /* let's hope it will stay valid */
1988}
1989
1990static void
1991slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1992{
1993 frame->prepare = prepare_schedule;
1994 frame->check = slf_check_nop;
1995}
1996
1997static void
1998slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1999{
2000 frame->prepare = prepare_cede;
2001 frame->check = slf_check_nop;
2002}
2003
2004static void
2005slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2006{
2007 frame->prepare = prepare_cede_notself;
2008 frame->check = slf_check_nop;
2009}
2010
2011/*
2012 * these not obviously related functions are all rolled into one
2013 * function to increase chances that they all will call transfer with the same
2014 * stack offset
2015 * SLF stands for "schedule-like-function".
2016 */
2017static OP *
2018pp_slf (pTHX)
2019{
2020 I32 checkmark; /* mark SP to see how many elements check has pushed */
2021
2022 /* set up the slf frame, unless it has already been set-up */
2023 /* the latter happens when a new coro has been started */
2024 /* or when a new cctx was attached to an existing coroutine */
2025 if (expect_true (!slf_frame.prepare))
2026 {
2027 /* first iteration */
2028 dSP;
2029 SV **arg = PL_stack_base + TOPMARK + 1;
2030 int items = SP - arg; /* args without function object */
2031 SV *gv = *sp;
2032
2033 /* do a quick consistency check on the "function" object, and if it isn't */
2034 /* for us, divert to the real entersub */
2035 if (SvTYPE (gv) != SVt_PVGV
2036 || !GvCV (gv)
2037 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2038 return PL_ppaddr[OP_ENTERSUB](aTHX);
2039
2040 if (!(PL_op->op_flags & OPf_STACKED))
2041 {
2042 /* ampersand-form of call, use @_ instead of stack */
2043 AV *av = GvAV (PL_defgv);
2044 arg = AvARRAY (av);
2045 items = AvFILLp (av) + 1;
2046 }
2047
2048 /* now call the init function, which needs to set up slf_frame */
2049 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2050 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2051
2052 /* pop args */
2053 SP = PL_stack_base + POPMARK;
2054
2055 PUTBACK;
2056 }
2057
2058 /* now that we have a slf_frame, interpret it! */
2059 /* we use a callback system not to make the code needlessly */
2060 /* complicated, but so we can run multiple perl coros from one cctx */
2061
2062 do
2063 {
2064 struct coro_transfer_args ta;
2065
2066 slf_frame.prepare (aTHX_ &ta);
2067 TRANSFER (ta, 0);
2068
2069 checkmark = PL_stack_sp - PL_stack_base;
2070 }
2071 while (slf_frame.check (aTHX_ &slf_frame));
2072
2073 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2074
2075 /* exception handling */
2076 if (expect_false (CORO_THROW))
2077 {
2078 SV *exception = sv_2mortal (CORO_THROW);
2079
2080 CORO_THROW = 0;
2081 sv_setsv (ERRSV, exception);
2082 croak (0);
2083 }
2084
2085 /* return value handling - mostly like entersub */
2086 /* make sure we put something on the stack in scalar context */
2087 if (GIMME_V == G_SCALAR)
2088 {
2089 dSP;
2090 SV **bot = PL_stack_base + checkmark;
2091
2092 if (sp == bot) /* too few, push undef */
2093 bot [1] = &PL_sv_undef;
2094 else if (sp != bot + 1) /* too many, take last one */
2095 bot [1] = *sp;
2096
2097 SP = bot + 1;
2098
2099 PUTBACK;
2100 }
2101
2102 return NORMAL;
2103}
2104
2105static void
2106api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2107{
2108 int i;
2109 SV **arg = PL_stack_base + ax;
2110 int items = PL_stack_sp - arg + 1;
2111
2112 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2113
2114 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2115 && PL_op->op_ppaddr != pp_slf)
2116 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2117
2118 CvFLAGS (cv) |= CVf_SLF;
2119 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2120 slf_cv = cv;
2121
2122 /* we patch the op, and then re-run the whole call */
2123 /* we have to put the same argument on the stack for this to work */
2124 /* and this will be done by pp_restore */
2125 slf_restore.op_next = (OP *)&slf_restore;
2126 slf_restore.op_type = OP_CUSTOM;
2127 slf_restore.op_ppaddr = pp_restore;
2128 slf_restore.op_first = PL_op;
2129
2130 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2131
2132 if (PL_op->op_flags & OPf_STACKED)
2133 {
2134 if (items > slf_arga)
2135 {
2136 slf_arga = items;
2137 free (slf_argv);
2138 slf_argv = malloc (slf_arga * sizeof (SV *));
2139 }
2140
2141 slf_argc = items;
2142
2143 for (i = 0; i < items; ++i)
2144 slf_argv [i] = SvREFCNT_inc (arg [i]);
2145 }
2146 else
2147 slf_argc = 0;
2148
2149 PL_op->op_ppaddr = pp_slf;
2150 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2151
2152 PL_op = (OP *)&slf_restore;
2153}
1742 2154
1743/*****************************************************************************/ 2155/*****************************************************************************/
1744/* PerlIO::cede */ 2156/* PerlIO::cede */
1745 2157
1746typedef struct 2158typedef struct
… …
1814 PerlIOBuf_get_cnt, 2226 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 2227 PerlIOBuf_set_ptrcnt,
1816}; 2228};
1817 2229
1818/*****************************************************************************/ 2230/*****************************************************************************/
2231/* Coro::Semaphore & Coro::Signal */
1819 2232
1820static const CV *slf_cv; /* for quick consistency check */
1821
1822static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1823static SV *slf_arg0;
1824static SV *slf_arg1;
1825static SV *slf_arg2;
1826
1827/* this restores the stack in the case we patched the entersub, to */
1828/* recreate the stack frame as perl will on following calls */
1829/* since entersub cleared the stack */
1830static OP * 2233static SV *
1831pp_restore (pTHX) 2234coro_waitarray_new (pTHX_ int count)
1832{ 2235{
1833 dSP; 2236 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2237 AV *av = newAV ();
2238 SV **ary;
1834 2239
1835 PUSHMARK (SP); 2240 /* unfortunately, building manually saves memory */
2241 Newx (ary, 2, SV *);
2242 AvALLOC (av) = ary;
2243 /*AvARRAY (av) = ary;*/
2244 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2245 AvMAX (av) = 1;
2246 AvFILLp (av) = 0;
2247 ary [0] = newSViv (count);
1836 2248
1837 EXTEND (SP, 3); 2249 return newRV_noinc ((SV *)av);
1838 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1839 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1840 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1841 PUSHs ((SV *)CvGV (slf_cv));
1842
1843 RETURNOP (slf_restore.op_first);
1844} 2250}
1845 2251
1846static void 2252/* semaphore */
1847slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1848{
1849 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1850}
1851 2253
1852static void 2254static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2255coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2256{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2257 SV *count_sv = AvARRAY (av)[0];
2258 IV count = SvIVX (count_sv);
1856 2259
1857 frame->prepare = slf_prepare_set_stacklevel; 2260 count += adjust;
1858 frame->check = slf_check_nop; 2261 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2262
1862static void 2263 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2264 while (count > 0 && AvFILLp (av) > 0)
1864{
1865 SV **arg = (SV **)slf_frame.data;
1866
1867 prepare_transfer (ta, arg [0], arg [1]);
1868}
1869
1870static void
1871slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1875
1876 frame->prepare = slf_prepare_transfer;
1877 frame->check = slf_check_nop;
1878 frame->data = (void *)arg; /* let's hope it will stay valid */
1879}
1880
1881static void
1882slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1883{
1884 frame->prepare = prepare_schedule;
1885 frame->check = slf_check_nop;
1886}
1887
1888static void
1889slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1890{
1891 frame->prepare = prepare_cede;
1892 frame->check = slf_check_nop;
1893}
1894
1895static void
1896slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1897{
1898 frame->prepare = prepare_cede_notself;
1899 frame->check = slf_check_nop;
1900}
1901
1902/* we hijack an hopefully unused CV flag for our purposes */
1903#define CVf_SLF 0x4000
1904
1905/*
1906 * these not obviously related functions are all rolled into one
1907 * function to increase chances that they all will call transfer with the same
1908 * stack offset
1909 * SLF stands for "schedule-like-function".
1910 */
1911static OP *
1912pp_slf (pTHX)
1913{
1914 I32 checkmark; /* mark SP to see how many elements check has pushed */
1915
1916 /* set up the slf frame, unless it has already been set-up */
1917 /* the latter happens when a new coro has been started */
1918 /* or when a new cctx was attached to an existing coroutine */
1919 if (expect_true (!slf_frame.prepare))
1920 { 2265 {
1921 /* first iteration */ 2266 SV *cb;
1922 dSP;
1923 SV **arg = PL_stack_base + TOPMARK + 1;
1924 int items = SP - arg; /* args without function object */
1925 SV *gv = *sp;
1926 2267
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2268 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2269 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2270 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2271 cb = av_shift (av);
1931 2272
1932 /* pop args */ 2273 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2274 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2275 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2276 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2277 }
1942 2278 else if (SvTYPE (cb) == SVt_PVCV)
1943 PUTBACK;
1944
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1946 }
1947
1948 /* now interpret the slf_frame */
1949 /* we use a callback system not to make the code needlessly */
1950 /* complicated, but so we can run multiple perl coros from one cctx */
1951
1952 do
1953 {
1954 struct coro_transfer_args ta;
1955
1956 slf_frame.prepare (aTHX_ &ta);
1957 TRANSFER (ta, 0);
1958
1959 checkmark = PL_stack_sp - PL_stack_base;
1960 }
1961 while (slf_frame.check (aTHX_ &slf_frame));
1962
1963 {
1964 dSP;
1965 SV **bot = PL_stack_base + checkmark;
1966 int gimme = GIMME_V;
1967
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1969
1970 /* make sure we put something on the stack in scalar context */
1971 if (gimme == G_SCALAR)
1972 { 2279 {
1973 if (sp == bot) 2280 dSP;
1974 XPUSHs (&PL_sv_undef); 2281 PUSHMARK (SP);
1975 2282 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1976 SP = bot + 1; 2283 PUTBACK;
2284 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1977 } 2285 }
1978 2286
1979 PUTBACK; 2287 SvREFCNT_dec (cb);
1980 } 2288 }
1981
1982 return NORMAL;
1983} 2289}
1984 2290
1985static void 2291static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2292coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1987{ 2293{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2294 /* call $sem->adjust (0) to possibly wake up some other waiters */
1989 2295 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1991 && PL_op->op_ppaddr != pp_slf)
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1993
1994 if (items > 3)
1995 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1996
1997 CvFLAGS (cv) |= CVf_SLF;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1999 slf_cv = cv;
2000
2001 /* we patch the op, and then re-run the whole call */
2002 /* we have to put the same argument on the stack for this to work */
2003 /* and this will be done by pp_restore */
2004 slf_restore.op_next = (OP *)&slf_restore;
2005 slf_restore.op_type = OP_NULL;
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
2012
2013 PL_op->op_ppaddr = pp_slf;
2014
2015 PL_op = (OP *)&slf_restore;
2016} 2296}
2017
2018/*****************************************************************************/
2019 2297
2020static int 2298static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2299slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2022{ 2300{
2023 AV *av = (AV *)frame->data; 2301 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0]; 2302 SV *count_sv = AvARRAY (av)[0];
2025 2303
2304 /* if we are about to throw, don't actually acquire the lock, just throw */
2305 if (CORO_THROW)
2306 return 0;
2026 if (SvIVX (count_sv) > 0) 2307 else if (SvIVX (count_sv) > 0)
2027 { 2308 {
2309 SvSTATE_current->on_destroy = 0;
2310
2311 if (acquire)
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2312 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2313 else
2314 coro_semaphore_adjust (aTHX_ av, 0);
2315
2029 return 0; 2316 return 0;
2030 } 2317 }
2031 else 2318 else
2032 { 2319 {
2033 int i; 2320 int i;
… …
2042 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2329 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2043 return 1; 2330 return 1;
2044 } 2331 }
2045} 2332}
2046 2333
2047static void 2334static int
2335slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2336{
2337 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2338}
2339
2340static int
2341slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2342{
2343 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2344}
2345
2346static void
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2347slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{ 2348{
2050 AV *av = (AV *)SvRV (arg [0]); 2349 AV *av = (AV *)SvRV (arg [0]);
2051 2350
2052 if (SvIVX (AvARRAY (av)[0]) > 0) 2351 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 { 2352 {
… …
2058 { 2357 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2358 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 2359
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2360 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule; 2361 frame->prepare = prepare_schedule;
2063 }
2064 2362
2363 /* to avoid race conditions when a woken-up coro gets terminated */
2364 /* we arrange for a temporary on_destroy that calls adjust (0) */
2365 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2366 }
2367}
2368
2369static void
2370slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2371{
2372 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 2373 frame->check = slf_check_semaphore_down;
2066
2067} 2374}
2375
2376static void
2377slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2378{
2379 if (items >= 2)
2380 {
2381 /* callback form */
2382 AV *av = (AV *)SvRV (arg [0]);
2383 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2384
2385 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2386
2387 if (SvIVX (AvARRAY (av)[0]) > 0)
2388 coro_semaphore_adjust (aTHX_ av, 0);
2389
2390 frame->prepare = prepare_nop;
2391 frame->check = slf_check_nop;
2392 }
2393 else
2394 {
2395 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2396 frame->check = slf_check_semaphore_wait;
2397 }
2398}
2399
2400/* signal */
2401
2402static void
2403coro_signal_wake (pTHX_ AV *av, int count)
2404{
2405 SvIVX (AvARRAY (av)[0]) = 0;
2406
2407 /* now signal count waiters */
2408 while (count > 0 && AvFILLp (av) > 0)
2409 {
2410 SV *cb;
2411
2412 /* swap first two elements so we can shift a waiter */
2413 cb = AvARRAY (av)[0];
2414 AvARRAY (av)[0] = AvARRAY (av)[1];
2415 AvARRAY (av)[1] = cb;
2416
2417 cb = av_shift (av);
2418
2419 api_ready (aTHX_ cb);
2420 sv_setiv (cb, 0); /* signal waiter */
2421 SvREFCNT_dec (cb);
2422
2423 --count;
2424 }
2425}
2426
2427static int
2428slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2429{
2430 /* if we are about to throw, also stop waiting */
2431 return SvROK ((SV *)frame->data) && !CORO_THROW;
2432}
2433
2434static void
2435slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2436{
2437 AV *av = (AV *)SvRV (arg [0]);
2438
2439 if (SvIVX (AvARRAY (av)[0]))
2440 {
2441 SvIVX (AvARRAY (av)[0]) = 0;
2442 frame->prepare = prepare_nop;
2443 frame->check = slf_check_nop;
2444 }
2445 else
2446 {
2447 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2448
2449 av_push (av, waiter);
2450
2451 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2452 frame->prepare = prepare_schedule;
2453 frame->check = slf_check_signal_wait;
2454 }
2455}
2456
2457/*****************************************************************************/
2458/* Coro::AIO */
2459
2460#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2461
2462/* helper storage struct */
2463struct io_state
2464{
2465 int errorno;
2466 I32 laststype; /* U16 in 5.10.0 */
2467 int laststatval;
2468 Stat_t statcache;
2469};
2470
2471static void
2472coro_aio_callback (pTHX_ CV *cv)
2473{
2474 dXSARGS;
2475 AV *state = (AV *)GENSUB_ARG;
2476 SV *coro = av_pop (state);
2477 SV *data_sv = newSV (sizeof (struct io_state));
2478
2479 av_extend (state, items - 1);
2480
2481 sv_upgrade (data_sv, SVt_PV);
2482 SvCUR_set (data_sv, sizeof (struct io_state));
2483 SvPOK_only (data_sv);
2484
2485 {
2486 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2487
2488 data->errorno = errno;
2489 data->laststype = PL_laststype;
2490 data->laststatval = PL_laststatval;
2491 data->statcache = PL_statcache;
2492 }
2493
2494 /* now build the result vector out of all the parameters and the data_sv */
2495 {
2496 int i;
2497
2498 for (i = 0; i < items; ++i)
2499 av_push (state, SvREFCNT_inc_NN (ST (i)));
2500 }
2501
2502 av_push (state, data_sv);
2503
2504 api_ready (aTHX_ coro);
2505 SvREFCNT_dec (coro);
2506 SvREFCNT_dec ((AV *)state);
2507}
2508
2509static int
2510slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2511{
2512 AV *state = (AV *)frame->data;
2513
2514 /* if we are about to throw, return early */
2515 /* this does not cancel the aio request, but at least */
2516 /* it quickly returns */
2517 if (CORO_THROW)
2518 return 0;
2519
2520 /* one element that is an RV? repeat! */
2521 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2522 return 1;
2523
2524 /* restore status */
2525 {
2526 SV *data_sv = av_pop (state);
2527 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2528
2529 errno = data->errorno;
2530 PL_laststype = data->laststype;
2531 PL_laststatval = data->laststatval;
2532 PL_statcache = data->statcache;
2533
2534 SvREFCNT_dec (data_sv);
2535 }
2536
2537 /* push result values */
2538 {
2539 dSP;
2540 int i;
2541
2542 EXTEND (SP, AvFILLp (state) + 1);
2543 for (i = 0; i <= AvFILLp (state); ++i)
2544 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2545
2546 PUTBACK;
2547 }
2548
2549 return 0;
2550}
2551
2552static void
2553slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2554{
2555 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2556 SV *coro_hv = SvRV (coro_current);
2557 struct coro *coro = SvSTATE_hv (coro_hv);
2558
2559 /* put our coroutine id on the state arg */
2560 av_push (state, SvREFCNT_inc_NN (coro_hv));
2561
2562 /* first see whether we have a non-zero priority and set it as AIO prio */
2563 if (coro->prio)
2564 {
2565 dSP;
2566
2567 static SV *prio_cv;
2568 static SV *prio_sv;
2569
2570 if (expect_false (!prio_cv))
2571 {
2572 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2573 prio_sv = newSViv (0);
2574 }
2575
2576 PUSHMARK (SP);
2577 sv_setiv (prio_sv, coro->prio);
2578 XPUSHs (prio_sv);
2579
2580 PUTBACK;
2581 call_sv (prio_cv, G_VOID | G_DISCARD);
2582 }
2583
2584 /* now call the original request */
2585 {
2586 dSP;
2587 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2588 int i;
2589
2590 PUSHMARK (SP);
2591
2592 /* first push all args to the stack */
2593 EXTEND (SP, items + 1);
2594
2595 for (i = 0; i < items; ++i)
2596 PUSHs (arg [i]);
2597
2598 /* now push the callback closure */
2599 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2600
2601 /* now call the AIO function - we assume our request is uncancelable */
2602 PUTBACK;
2603 call_sv ((SV *)req, G_VOID | G_DISCARD);
2604 }
2605
2606 /* now that the requets is going, we loop toll we have a result */
2607 frame->data = (void *)state;
2608 frame->prepare = prepare_schedule;
2609 frame->check = slf_check_aio_req;
2610}
2611
2612static void
2613coro_aio_req_xs (pTHX_ CV *cv)
2614{
2615 dXSARGS;
2616
2617 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2618
2619 XSRETURN_EMPTY;
2620}
2621
2622/*****************************************************************************/
2068 2623
2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2624MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2070 2625
2071PROTOTYPES: DISABLE 2626PROTOTYPES: DISABLE
2072 2627
2073BOOT: 2628BOOT:
2074{ 2629{
2075#ifdef USE_ITHREADS 2630#ifdef USE_ITHREADS
2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD 2631# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT; 2632 coro_thx = PERL_GET_CONTEXT;
2079# endif 2633# endif
2080#endif 2634#endif
2081 BOOT_PAGESIZE; 2635 BOOT_PAGESIZE;
… …
2101 main_mainstack = PL_mainstack; 2655 main_mainstack = PL_mainstack;
2102 main_top_env = PL_top_env; 2656 main_top_env = PL_top_env;
2103 2657
2104 while (main_top_env->je_prev) 2658 while (main_top_env->je_prev)
2105 main_top_env = main_top_env->je_prev; 2659 main_top_env = main_top_env->je_prev;
2660
2661 {
2662 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2663
2664 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2665 hv_store_ent (PL_custom_op_names, slf,
2666 newSVpv ("coro_slf", 0), 0);
2667
2668 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2669 hv_store_ent (PL_custom_op_descs, slf,
2670 newSVpv ("coro schedule like function", 0), 0);
2671 }
2106 2672
2107 coroapi.ver = CORO_API_VERSION; 2673 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION; 2674 coroapi.rev = CORO_API_REVISION;
2109 2675
2110 coroapi.transfer = api_transfer; 2676 coroapi.transfer = api_transfer;
… …
2128 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2694 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2129} 2695}
2130 2696
2131SV * 2697SV *
2132new (char *klass, ...) 2698new (char *klass, ...)
2699 ALIAS:
2700 Coro::new = 1
2133 CODE: 2701 CODE:
2134{ 2702{
2135 struct coro *coro; 2703 struct coro *coro;
2136 MAGIC *mg; 2704 MAGIC *mg;
2137 HV *hv; 2705 HV *hv;
2706 CV *cb;
2138 int i; 2707 int i;
2708
2709 if (items > 1)
2710 {
2711 cb = coro_sv_2cv (aTHX_ ST (1));
2712
2713 if (!ix)
2714 {
2715 if (CvISXSUB (cb))
2716 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2717
2718 if (!CvROOT (cb))
2719 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2720 }
2721 }
2139 2722
2140 Newz (0, coro, 1, struct coro); 2723 Newz (0, coro, 1, struct coro);
2141 coro->args = newAV (); 2724 coro->args = newAV ();
2142 coro->flags = CF_NEW; 2725 coro->flags = CF_NEW;
2143 2726
… …
2148 coro->hv = hv = newHV (); 2731 coro->hv = hv = newHV ();
2149 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2732 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2150 mg->mg_flags |= MGf_DUP; 2733 mg->mg_flags |= MGf_DUP;
2151 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2734 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2152 2735
2736 if (items > 1)
2737 {
2153 av_extend (coro->args, items - 1); 2738 av_extend (coro->args, items - 1 + ix - 1);
2739
2740 if (ix)
2741 {
2742 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2743 cb = cv_coro_run;
2744 }
2745
2746 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2747
2154 for (i = 1; i < items; i++) 2748 for (i = 2; i < items; i++)
2155 av_push (coro->args, newSVsv (ST (i))); 2749 av_push (coro->args, newSVsv (ST (i)));
2750 }
2156} 2751}
2157 OUTPUT: 2752 OUTPUT:
2158 RETVAL 2753 RETVAL
2159 2754
2160void 2755void
2161_set_stacklevel (...) 2756transfer (...)
2757 PROTOTYPE: $$
2162 CODE: 2758 CODE:
2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items); 2759 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2164
2165void
2166transfer (...)
2167 CODE:
2168 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
2169 2760
2170bool 2761bool
2171_destroy (SV *coro_sv) 2762_destroy (SV *coro_sv)
2172 CODE: 2763 CODE:
2173 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2764 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2291 2882
2292void 2883void
2293throw (Coro::State self, SV *throw = &PL_sv_undef) 2884throw (Coro::State self, SV *throw = &PL_sv_undef)
2294 PROTOTYPE: $;$ 2885 PROTOTYPE: $;$
2295 CODE: 2886 CODE:
2887{
2888 struct coro *current = SvSTATE_current;
2889 SV **throwp = self == current ? &CORO_THROW : &self->except;
2296 SvREFCNT_dec (self->throw); 2890 SvREFCNT_dec (*throwp);
2297 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2891 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2892}
2298 2893
2299void 2894void
2300api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2895api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2301 PROTOTYPE: $;$ 2896 PROTOTYPE: $;$
2302 C_ARGS: aTHX_ coro, flags 2897 C_ARGS: aTHX_ coro, flags
… …
2333 2928
2334void 2929void
2335force_cctx () 2930force_cctx ()
2336 PROTOTYPE: 2931 PROTOTYPE:
2337 CODE: 2932 CODE:
2338 struct coro *coro = SvSTATE (coro_current);
2339 coro->cctx->idle_sp = 0; 2933 SvSTATE_current->cctx->idle_sp = 0;
2340 2934
2341void 2935void
2342swap_defsv (Coro::State self) 2936swap_defsv (Coro::State self)
2343 PROTOTYPE: $ 2937 PROTOTYPE: $
2344 ALIAS: 2938 ALIAS:
… …
2352 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2946 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2353 2947
2354 SV *tmp = *src; *src = *dst; *dst = tmp; 2948 SV *tmp = *src; *src = *dst; *dst = tmp;
2355 } 2949 }
2356 2950
2951
2357MODULE = Coro::State PACKAGE = Coro 2952MODULE = Coro::State PACKAGE = Coro
2358 2953
2359BOOT: 2954BOOT:
2360{ 2955{
2361 int i; 2956 int i;
2362 2957
2363 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2958 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2364 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2959 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2365 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2960 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2366 2961 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2962 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2367 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2963 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2368 SvREADONLY_on (coro_current); 2964
2965 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2966 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2967 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
2968 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2369 2969
2370 coro_stash = gv_stashpv ("Coro", TRUE); 2970 coro_stash = gv_stashpv ("Coro", TRUE);
2371 2971
2372 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2972 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2373 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2973 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2388 coroapi.ready = api_ready; 2988 coroapi.ready = api_ready;
2389 coroapi.is_ready = api_is_ready; 2989 coroapi.is_ready = api_is_ready;
2390 coroapi.nready = coro_nready; 2990 coroapi.nready = coro_nready;
2391 coroapi.current = coro_current; 2991 coroapi.current = coro_current;
2392 2992
2393 GCoroAPI = &coroapi; 2993 /*GCoroAPI = &coroapi;*/
2394 sv_setiv (sv, (IV)&coroapi); 2994 sv_setiv (sv, (IV)&coroapi);
2395 SvREADONLY_on (sv); 2995 SvREADONLY_on (sv);
2396 } 2996 }
2397} 2997}
2398 2998
2399void 2999void
2400schedule (...) 3000schedule (...)
2401 CODE: 3001 CODE:
2402 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), items); 3002 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2403 3003
2404void 3004void
2405cede (...) 3005cede (...)
2406 CODE: 3006 CODE:
2407 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), items); 3007 CORO_EXECUTE_SLF_XS (slf_init_cede);
2408 3008
2409void 3009void
2410cede_notself (...) 3010cede_notself (...)
2411 CODE: 3011 CODE:
2412 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), items); 3012 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2413 3013
2414void 3014void
2415_set_current (SV *current) 3015_set_current (SV *current)
2416 PROTOTYPE: $ 3016 PROTOTYPE: $
2417 CODE: 3017 CODE:
… …
2420 3020
2421void 3021void
2422_set_readyhook (SV *hook) 3022_set_readyhook (SV *hook)
2423 PROTOTYPE: $ 3023 PROTOTYPE: $
2424 CODE: 3024 CODE:
2425 LOCK;
2426 SvREFCNT_dec (coro_readyhook); 3025 SvREFCNT_dec (coro_readyhook);
2427 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3026 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2428 UNLOCK;
2429 3027
2430int 3028int
2431prio (Coro::State coro, int newprio = 0) 3029prio (Coro::State coro, int newprio = 0)
2432 PROTOTYPE: $;$ 3030 PROTOTYPE: $;$
2433 ALIAS: 3031 ALIAS:
… …
2464 CODE: 3062 CODE:
2465 RETVAL = coro_nready; 3063 RETVAL = coro_nready;
2466 OUTPUT: 3064 OUTPUT:
2467 RETVAL 3065 RETVAL
2468 3066
2469# for async_pool speedup
2470void 3067void
2471_pool_1 (SV *cb) 3068_pool_handler (...)
2472 CODE: 3069 CODE:
2473{ 3070 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2474 struct coro *coro = SvSTATE (coro_current);
2475 HV *hv = (HV *)SvRV (coro_current);
2476 AV *defav = GvAV (PL_defgv);
2477 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2478 AV *invoke_av;
2479 int i, len;
2480 3071
2481 if (!invoke) 3072void
3073async_pool (SV *cv, ...)
3074 PROTOTYPE: &@
3075 PPCODE:
3076{
3077 HV *hv = (HV *)av_pop (av_async_pool);
3078 AV *av = newAV ();
3079 SV *cb = ST (0);
3080 int i;
3081
3082 av_extend (av, items - 2);
3083 for (i = 1; i < items; ++i)
3084 av_push (av, SvREFCNT_inc_NN (ST (i)));
3085
3086 if ((SV *)hv == &PL_sv_undef)
2482 { 3087 {
2483 SV *old = PL_diehook; 3088 PUSHMARK (SP);
2484 PL_diehook = 0; 3089 EXTEND (SP, 2);
2485 SvREFCNT_dec (old); 3090 PUSHs (sv_Coro);
2486 croak ("\3async_pool terminate\2\n"); 3091 PUSHs ((SV *)cv_pool_handler);
3092 PUTBACK;
3093 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3094 SPAGAIN;
3095
3096 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2487 } 3097 }
2488 3098
2489 SvREFCNT_dec (coro->saved_deffh);
2490 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2491
2492 hv_store (hv, "desc", sizeof ("desc") - 1,
2493 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2494
2495 invoke_av = (AV *)SvRV (invoke);
2496 len = av_len (invoke_av);
2497
2498 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2499
2500 if (len > 0)
2501 { 3099 {
2502 av_fill (defav, len - 1); 3100 struct coro *coro = SvSTATE_hv (hv);
2503 for (i = 0; i < len; ++i) 3101
2504 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3102 assert (!coro->invoke_cb);
3103 assert (!coro->invoke_av);
3104 coro->invoke_cb = SvREFCNT_inc (cb);
3105 coro->invoke_av = av;
2505 } 3106 }
2506}
2507 3107
2508void 3108 api_ready (aTHX_ (SV *)hv);
2509_pool_2 (SV *cb) 3109
3110 if (GIMME_V != G_VOID)
3111 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3112 else
3113 SvREFCNT_dec (hv);
3114}
3115
3116SV *
3117rouse_cb ()
3118 PROTOTYPE:
2510 CODE: 3119 CODE:
2511{ 3120 RETVAL = coro_new_rouse_cb (aTHX);
2512 struct coro *coro = SvSTATE (coro_current);
2513
2514 sv_setsv (cb, &PL_sv_undef);
2515
2516 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2517 coro->saved_deffh = 0;
2518
2519 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2520 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2521 {
2522 SV *old = PL_diehook;
2523 PL_diehook = 0;
2524 SvREFCNT_dec (old);
2525 croak ("\3async_pool terminate\2\n");
2526 }
2527
2528 av_clear (GvAV (PL_defgv));
2529 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2530 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2531
2532 coro->prio = 0;
2533
2534 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2535 api_trace (aTHX_ coro_current, 0);
2536
2537 av_push (av_async_pool, newSVsv (coro_current));
2538}
2539
2540#if 0
2541
2542void
2543_generator_call (...)
2544 PROTOTYPE: @
2545 PPCODE:
2546 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2547 xxxx
2548 abort ();
2549
2550SV *
2551gensub (SV *sub, ...)
2552 PROTOTYPE: &;@
2553 CODE:
2554{
2555 struct coro *coro;
2556 MAGIC *mg;
2557 CV *xcv;
2558 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2559 int i;
2560
2561 CvGV (ncv) = CvGV (cv);
2562 CvFILE (ncv) = CvFILE (cv);
2563
2564 Newz (0, coro, 1, struct coro);
2565 coro->args = newAV ();
2566 coro->flags = CF_NEW;
2567
2568 av_extend (coro->args, items - 1);
2569 for (i = 1; i < items; i++)
2570 av_push (coro->args, newSVsv (ST (i)));
2571
2572 CvISXSUB_on (ncv);
2573 CvXSUBANY (ncv).any_ptr = (void *)coro;
2574
2575 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2576
2577 CvXSUB (ncv) = CvXSUB (xcv);
2578 CvANON_on (ncv);
2579
2580 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2581 RETVAL = newRV_noinc ((SV *)ncv);
2582}
2583 OUTPUT: 3121 OUTPUT:
2584 RETVAL 3122 RETVAL
2585 3123
2586#endif
2587
2588
2589MODULE = Coro::State PACKAGE = Coro::AIO
2590
2591void 3124void
2592_get_state (SV *self) 3125rouse_wait (...)
2593 PROTOTYPE: $ 3126 PROTOTYPE: ;$
2594 PPCODE: 3127 PPCODE:
2595{ 3128 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2596 AV *defav = GvAV (PL_defgv);
2597 AV *av = newAV ();
2598 int i;
2599 SV *data_sv = newSV (sizeof (struct io_state));
2600 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2601 SvCUR_set (data_sv, sizeof (struct io_state));
2602 SvPOK_only (data_sv);
2603
2604 data->errorno = errno;
2605 data->laststype = PL_laststype;
2606 data->laststatval = PL_laststatval;
2607 data->statcache = PL_statcache;
2608
2609 av_extend (av, AvFILLp (defav) + 1 + 1);
2610
2611 for (i = 0; i <= AvFILLp (defav); ++i)
2612 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2613
2614 av_push (av, data_sv);
2615
2616 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2617
2618 api_ready (aTHX_ self);
2619}
2620
2621void
2622_set_state (SV *state)
2623 PROTOTYPE: $
2624 PPCODE:
2625{
2626 AV *av = (AV *)SvRV (state);
2627 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2628 int i;
2629
2630 errno = data->errorno;
2631 PL_laststype = data->laststype;
2632 PL_laststatval = data->laststatval;
2633 PL_statcache = data->statcache;
2634
2635 EXTEND (SP, AvFILLp (av));
2636 for (i = 0; i < AvFILLp (av); ++i)
2637 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2638}
2639
2640
2641MODULE = Coro::State PACKAGE = Coro::AnyEvent
2642
2643BOOT:
2644 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2645
2646SV *
2647_schedule (...)
2648 CODE:
2649{
2650 static int incede;
2651
2652 api_cede_notself (aTHX);
2653
2654 ++incede;
2655 while (coro_nready >= incede && api_cede (aTHX))
2656 ;
2657
2658 sv_setsv (sv_activity, &PL_sv_undef);
2659 if (coro_nready >= incede)
2660 {
2661 PUSHMARK (SP);
2662 PUTBACK;
2663 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2664 SPAGAIN;
2665 }
2666
2667 --incede;
2668}
2669 3129
2670 3130
2671MODULE = Coro::State PACKAGE = PerlIO::cede 3131MODULE = Coro::State PACKAGE = PerlIO::cede
2672 3132
2673BOOT: 3133BOOT:
2674 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3134 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2675 3135
3136
2676MODULE = Coro::State PACKAGE = Coro::Semaphore 3137MODULE = Coro::State PACKAGE = Coro::Semaphore
2677 3138
2678SV * 3139SV *
2679new (SV *klass, SV *count_ = 0) 3140new (SV *klass, SV *count = 0)
2680 CODE: 3141 CODE:
2681{ 3142 RETVAL = sv_bless (
2682 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3143 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2683 AV *av = newAV (); 3144 GvSTASH (CvGV (cv))
2684 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3145 );
2685 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3146 OUTPUT:
2686} 3147 RETVAL
3148
3149# helper for Coro::Channel
3150SV *
3151_alloc (int count)
3152 CODE:
3153 RETVAL = coro_waitarray_new (aTHX_ count);
2687 OUTPUT: 3154 OUTPUT:
2688 RETVAL 3155 RETVAL
2689 3156
2690SV * 3157SV *
2691count (SV *self) 3158count (SV *self)
… …
2697void 3164void
2698up (SV *self, int adjust = 1) 3165up (SV *self, int adjust = 1)
2699 ALIAS: 3166 ALIAS:
2700 adjust = 1 3167 adjust = 1
2701 CODE: 3168 CODE:
2702{ 3169 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2703 AV *av = (AV *)SvRV (self);
2704 SV *count_sv = AvARRAY (av)[0];
2705 IV count = SvIVX (count_sv);
2706
2707 count += ix ? adjust : 1;
2708 SvIVX (count_sv) = count;
2709
2710 /* now wake up as many waiters as possible */
2711 while (count > 0 && AvFILLp (av) >= count)
2712 {
2713 SV *cb;
2714
2715 /* swap first two elements so we can shift a waiter */
2716 AvARRAY (av)[0] = AvARRAY (av)[1];
2717 AvARRAY (av)[1] = count_sv;
2718 cb = av_shift (av);
2719
2720 if (SvOBJECT (cb))
2721 api_ready (cb);
2722 else
2723 croak ("callbacks not yet supported");
2724
2725 SvREFCNT_dec (cb);
2726 }
2727}
2728 3170
2729void 3171void
2730down (SV *self) 3172down (...)
2731 CODE: 3173 CODE:
2732 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), items); 3174 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3175
3176void
3177wait (...)
3178 CODE:
3179 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2733 3180
2734void 3181void
2735try (SV *self) 3182try (SV *self)
2736 PPCODE: 3183 PPCODE:
2737{ 3184{
… …
2749 XSRETURN_NO; 3196 XSRETURN_NO;
2750} 3197}
2751 3198
2752void 3199void
2753waiters (SV *self) 3200waiters (SV *self)
2754 CODE: 3201 PPCODE:
2755{ 3202{
2756 AV *av = (AV *)SvRV (self); 3203 AV *av = (AV *)SvRV (self);
3204 int wcount = AvFILLp (av) + 1 - 1;
2757 3205
2758 if (GIMME_V == G_SCALAR) 3206 if (GIMME_V == G_SCALAR)
2759 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3207 XPUSHs (sv_2mortal (newSViv (wcount)));
2760 else 3208 else
2761 { 3209 {
2762 int i; 3210 int i;
2763 EXTEND (SP, AvFILLp (av) + 1 - 1); 3211 EXTEND (SP, wcount);
2764 for (i = 1; i <= AvFILLp (av); ++i) 3212 for (i = 1; i <= wcount; ++i)
2765 PUSHs (newSVsv (AvARRAY (av)[i])); 3213 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2766 } 3214 }
2767} 3215}
2768 3216
3217MODULE = Coro::State PACKAGE = Coro::Signal
3218
3219SV *
3220new (SV *klass)
3221 CODE:
3222 RETVAL = sv_bless (
3223 coro_waitarray_new (aTHX_ 0),
3224 GvSTASH (CvGV (cv))
3225 );
3226 OUTPUT:
3227 RETVAL
3228
3229void
3230wait (...)
3231 CODE:
3232 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3233
3234void
3235broadcast (SV *self)
3236 CODE:
3237{
3238 AV *av = (AV *)SvRV (self);
3239 coro_signal_wake (aTHX_ av, AvFILLp (av));
3240}
3241
3242void
3243send (SV *self)
3244 CODE:
3245{
3246 AV *av = (AV *)SvRV (self);
3247
3248 if (AvFILLp (av))
3249 coro_signal_wake (aTHX_ av, 1);
3250 else
3251 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3252}
3253
3254IV
3255awaited (SV *self)
3256 CODE:
3257 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3258 OUTPUT:
3259 RETVAL
3260
3261
3262MODULE = Coro::State PACKAGE = Coro::AnyEvent
3263
3264BOOT:
3265 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3266
3267void
3268_schedule (...)
3269 CODE:
3270{
3271 static int incede;
3272
3273 api_cede_notself (aTHX);
3274
3275 ++incede;
3276 while (coro_nready >= incede && api_cede (aTHX))
3277 ;
3278
3279 sv_setsv (sv_activity, &PL_sv_undef);
3280 if (coro_nready >= incede)
3281 {
3282 PUSHMARK (SP);
3283 PUTBACK;
3284 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3285 }
3286
3287 --incede;
3288}
3289
3290
3291MODULE = Coro::State PACKAGE = Coro::AIO
3292
3293void
3294_register (char *target, char *proto, SV *req)
3295 CODE:
3296{
3297 CV *req_cv = coro_sv_2cv (aTHX_ req);
3298 /* newXSproto doesn't return the CV on 5.8 */
3299 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3300 sv_setpv ((SV *)slf_cv, proto);
3301 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3302}
3303

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