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Comparing Coro/Coro/State.xs (file contents):
Revision 1.277 by root, Sat Nov 15 18:40:55 2008 UTC vs.
Revision 1.317 by root, Thu Nov 20 06:28:52 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}
… …
823slf_check_nop (pTHX_ struct CoroSLF *frame) 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 = (void *)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 == (void *)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
… …
1575api_is_ready (pTHX_ SV *coro_sv) 1612api_is_ready (pTHX_ SV *coro_sv)
1576{ 1613{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1614 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1615}
1579 1616
1617/* expects to own a reference to next->hv */
1580INLINE void 1618INLINE void
1619prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1620{
1621 SV *prev_sv = SvRV (coro_current);
1622
1623 ta->prev = SvSTATE_hv (prev_sv);
1624 ta->next = next;
1625
1626 TRANSFER_CHECK (*ta);
1627
1628 SvRV_set (coro_current, (SV *)next->hv);
1629
1630 free_coro_mortal (aTHX);
1631 coro_mortal = prev_sv;
1632}
1633
1634static void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1635prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1582{ 1636{
1583 SV *prev_sv, *next_sv;
1584
1585 for (;;) 1637 for (;;)
1586 { 1638 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX); 1639 SV *next_sv = coro_deq (aTHX);
1589 1640
1590 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv)) 1641 if (expect_true (next_sv))
1592 { 1642 {
1643 struct coro *next = SvSTATE_hv (next_sv);
1644
1645 /* cannot transfer to destroyed coros, skip and look for next */
1646 if (expect_false (next->flags & CF_DESTROYED))
1647 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1648 else
1649 {
1650 next->flags &= ~CF_READY;
1651 --coro_nready;
1652
1653 return prepare_schedule_to (aTHX_ ta, next);
1654 }
1655 }
1656 else
1657 {
1658 /* nothing to schedule: call the idle handler */
1593 dSP; 1659 dSP;
1594 UNLOCK;
1595 1660
1596 ENTER; 1661 ENTER;
1597 SAVETMPS; 1662 SAVETMPS;
1598 1663
1599 PUSHMARK (SP); 1664 PUSHMARK (SP);
1600 PUTBACK; 1665 PUTBACK;
1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1666 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1602 SPAGAIN;
1603 1667
1604 FREETMPS; 1668 FREETMPS;
1605 LEAVE; 1669 LEAVE;
1606 continue;
1607 } 1670 }
1608
1609 ta->next = SvSTATE (next_sv);
1610
1611 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */
1617 continue;
1618 }
1619
1620 --coro_nready;
1621 UNLOCK;
1622 break;
1623 } 1671 }
1624
1625 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current);
1627 ta->prev = SvSTATE (prev_sv);
1628 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv);
1632
1633 LOCK;
1634 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv;
1636 UNLOCK;
1637} 1672}
1638 1673
1639INLINE void 1674INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1675prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1676{
… …
1662{ 1697{
1663 struct coro_transfer_args ta; 1698 struct coro_transfer_args ta;
1664 1699
1665 prepare_schedule (aTHX_ &ta); 1700 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1701 TRANSFER (ta, 1);
1702}
1703
1704static void
1705api_schedule_to (pTHX_ SV *coro_sv)
1706{
1707 struct coro_transfer_args ta;
1708 struct coro *next = SvSTATE (coro_sv);
1709
1710 SvREFCNT_inc_NN (coro_sv);
1711 prepare_schedule_to (aTHX_ &ta, next);
1667} 1712}
1668 1713
1669static int 1714static int
1670api_cede (pTHX) 1715api_cede (pTHX)
1671{ 1716{
… …
1720 else 1765 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1766 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1767 }
1723} 1768}
1724 1769
1725#if 0 1770/*****************************************************************************/
1771/* async pool handler */
1772
1726static int 1773static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1774slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1728{ 1775{
1729 AV *padlist; 1776 HV *hv = (HV *)SvRV (coro_current);
1730 AV *av = (AV *)mg->mg_obj; 1777 struct coro *coro = (struct coro *)frame->data;
1731 1778
1732 abort (); 1779 if (!coro->invoke_cb)
1780 return 1; /* loop till we have invoke */
1781 else
1782 {
1783 hv_store (hv, "desc", sizeof ("desc") - 1,
1784 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1785
1786 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1787
1788 {
1789 dSP;
1790 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1791 PUTBACK;
1792 }
1793
1794 SvREFCNT_dec (GvAV (PL_defgv));
1795 GvAV (PL_defgv) = coro->invoke_av;
1796 coro->invoke_av = 0;
1797
1798 return 0;
1799 }
1800}
1801
1802static void
1803slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1804{
1805 HV *hv = (HV *)SvRV (coro_current);
1806 struct coro *coro = SvSTATE_hv ((SV *)hv);
1807
1808 if (expect_true (coro->saved_deffh))
1809 {
1810 /* subsequent iteration */
1811 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1812 coro->saved_deffh = 0;
1813
1814 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1815 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1816 {
1817 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1818 coro->invoke_av = newAV ();
1819
1820 frame->prepare = prepare_nop;
1821 }
1822 else
1823 {
1824 av_clear (GvAV (PL_defgv));
1825 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1826
1827 coro->prio = 0;
1828
1829 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1830 api_trace (aTHX_ coro_current, 0);
1831
1832 frame->prepare = prepare_schedule;
1833 av_push (av_async_pool, SvREFCNT_inc (hv));
1834 }
1835 }
1836 else
1837 {
1838 /* first iteration, simply fall through */
1839 frame->prepare = prepare_nop;
1840 }
1841
1842 frame->check = slf_check_pool_handler;
1843 frame->data = (void *)coro;
1844}
1845
1846/*****************************************************************************/
1847/* rouse callback */
1848
1849#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1850
1851static void
1852coro_rouse_callback (pTHX_ CV *cv)
1853{
1854 dXSARGS;
1855 SV *data = (SV *)GENSUB_ARG;
1856
1857 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1858 {
1859 /* first call, set args */
1860 AV *av = newAV ();
1861 SV *coro = SvRV (data);
1862
1863 SvRV_set (data, (SV *)av);
1864 api_ready (aTHX_ coro);
1865 SvREFCNT_dec (coro);
1866
1867 /* better take a full copy of the arguments */
1868 while (items--)
1869 av_store (av, items, newSVsv (ST (items)));
1870 }
1871
1872 XSRETURN_EMPTY;
1873}
1874
1875static int
1876slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1877{
1878 SV *data = (SV *)frame->data;
1879
1880 if (CORO_THROW)
1881 return 0;
1882
1883 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1884 return 1;
1885
1886 /* now push all results on the stack */
1887 {
1888 dSP;
1889 AV *av = (AV *)SvRV (data);
1890 int i;
1891
1892 EXTEND (SP, AvFILLp (av) + 1);
1893 for (i = 0; i <= AvFILLp (av); ++i)
1894 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1895
1896 /* we have stolen the elements, so ste length to zero and free */
1897 AvFILLp (av) = -1;
1898 av_undef (av);
1899
1900 PUTBACK;
1901 }
1733 1902
1734 return 0; 1903 return 0;
1735} 1904}
1736 1905
1737static MGVTBL coro_gensub_vtbl = { 1906static void
1738 0, 0, 0, 0, 1907slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 1908{
1740}; 1909 SV *cb;
1741#endif 1910
1911 if (items)
1912 cb = arg [0];
1913 else
1914 {
1915 struct coro *coro = SvSTATE_current;
1916
1917 if (!coro->rouse_cb)
1918 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1919
1920 cb = sv_2mortal (coro->rouse_cb);
1921 coro->rouse_cb = 0;
1922 }
1923
1924 if (!SvROK (cb)
1925 || SvTYPE (SvRV (cb)) != SVt_PVCV
1926 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1927 croak ("Coro::rouse_wait called with illegal callback argument,");
1928
1929 {
1930 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1931 SV *data = (SV *)GENSUB_ARG;
1932
1933 frame->data = (void *)data;
1934 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1935 frame->check = slf_check_rouse_wait;
1936 }
1937}
1938
1939static SV *
1940coro_new_rouse_cb (pTHX)
1941{
1942 HV *hv = (HV *)SvRV (coro_current);
1943 struct coro *coro = SvSTATE_hv (hv);
1944 SV *data = newRV_inc ((SV *)hv);
1945 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1946
1947 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1948 SvREFCNT_dec (data); /* magicext increases the refcount */
1949
1950 SvREFCNT_dec (coro->rouse_cb);
1951 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1952
1953 return cb;
1954}
1955
1956/*****************************************************************************/
1957/* schedule-like-function opcode (SLF) */
1958
1959static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1960static const CV *slf_cv;
1961static SV **slf_argv;
1962static int slf_argc, slf_arga; /* count, allocated */
1963static I32 slf_ax; /* top of stack, for restore */
1964
1965/* this restores the stack in the case we patched the entersub, to */
1966/* recreate the stack frame as perl will on following calls */
1967/* since entersub cleared the stack */
1968static OP *
1969pp_restore (pTHX)
1970{
1971 int i;
1972 SV **SP = PL_stack_base + slf_ax;
1973
1974 PUSHMARK (SP);
1975
1976 EXTEND (SP, slf_argc + 1);
1977
1978 for (i = 0; i < slf_argc; ++i)
1979 PUSHs (sv_2mortal (slf_argv [i]));
1980
1981 PUSHs ((SV *)CvGV (slf_cv));
1982
1983 RETURNOP (slf_restore.op_first);
1984}
1985
1986static void
1987slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1988{
1989 SV **arg = (SV **)slf_frame.data;
1990
1991 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1992}
1993
1994static void
1995slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1996{
1997 if (items != 2)
1998 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1999
2000 frame->prepare = slf_prepare_transfer;
2001 frame->check = slf_check_nop;
2002 frame->data = (void *)arg; /* let's hope it will stay valid */
2003}
2004
2005static void
2006slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2007{
2008 frame->prepare = prepare_schedule;
2009 frame->check = slf_check_nop;
2010}
2011
2012static void
2013slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2014{
2015 struct coro *next = (struct coro *)slf_frame.data;
2016
2017 SvREFCNT_inc_NN (next->hv);
2018 prepare_schedule_to (aTHX_ ta, next);
2019}
2020
2021static void
2022slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2023{
2024 if (!items)
2025 croak ("Coro::schedule_to expects a coroutine argument, caught");
2026
2027 frame->data = (void *)SvSTATE (arg [0]);
2028 frame->prepare = slf_prepare_schedule_to;
2029 frame->check = slf_check_nop;
2030}
2031
2032static void
2033slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2034{
2035 api_ready (aTHX_ SvRV (coro_current));
2036
2037 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2038}
2039
2040static void
2041slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2042{
2043 frame->prepare = prepare_cede;
2044 frame->check = slf_check_nop;
2045}
2046
2047static void
2048slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{
2050 frame->prepare = prepare_cede_notself;
2051 frame->check = slf_check_nop;
2052}
2053
2054/*
2055 * these not obviously related functions are all rolled into one
2056 * function to increase chances that they all will call transfer with the same
2057 * stack offset
2058 * SLF stands for "schedule-like-function".
2059 */
2060static OP *
2061pp_slf (pTHX)
2062{
2063 I32 checkmark; /* mark SP to see how many elements check has pushed */
2064
2065 /* set up the slf frame, unless it has already been set-up */
2066 /* the latter happens when a new coro has been started */
2067 /* or when a new cctx was attached to an existing coroutine */
2068 if (expect_true (!slf_frame.prepare))
2069 {
2070 /* first iteration */
2071 dSP;
2072 SV **arg = PL_stack_base + TOPMARK + 1;
2073 int items = SP - arg; /* args without function object */
2074 SV *gv = *sp;
2075
2076 /* do a quick consistency check on the "function" object, and if it isn't */
2077 /* for us, divert to the real entersub */
2078 if (SvTYPE (gv) != SVt_PVGV
2079 || !GvCV (gv)
2080 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2081 return PL_ppaddr[OP_ENTERSUB](aTHX);
2082
2083 if (!(PL_op->op_flags & OPf_STACKED))
2084 {
2085 /* ampersand-form of call, use @_ instead of stack */
2086 AV *av = GvAV (PL_defgv);
2087 arg = AvARRAY (av);
2088 items = AvFILLp (av) + 1;
2089 }
2090
2091 /* now call the init function, which needs to set up slf_frame */
2092 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2093 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2094
2095 /* pop args */
2096 SP = PL_stack_base + POPMARK;
2097
2098 PUTBACK;
2099 }
2100
2101 /* now that we have a slf_frame, interpret it! */
2102 /* we use a callback system not to make the code needlessly */
2103 /* complicated, but so we can run multiple perl coros from one cctx */
2104
2105 do
2106 {
2107 struct coro_transfer_args ta;
2108
2109 slf_frame.prepare (aTHX_ &ta);
2110 TRANSFER (ta, 0);
2111
2112 checkmark = PL_stack_sp - PL_stack_base;
2113 }
2114 while (slf_frame.check (aTHX_ &slf_frame));
2115
2116 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2117
2118 /* exception handling */
2119 if (expect_false (CORO_THROW))
2120 {
2121 SV *exception = sv_2mortal (CORO_THROW);
2122
2123 CORO_THROW = 0;
2124 sv_setsv (ERRSV, exception);
2125 croak (0);
2126 }
2127
2128 /* return value handling - mostly like entersub */
2129 /* make sure we put something on the stack in scalar context */
2130 if (GIMME_V == G_SCALAR)
2131 {
2132 dSP;
2133 SV **bot = PL_stack_base + checkmark;
2134
2135 if (sp == bot) /* too few, push undef */
2136 bot [1] = &PL_sv_undef;
2137 else if (sp != bot + 1) /* too many, take last one */
2138 bot [1] = *sp;
2139
2140 SP = bot + 1;
2141
2142 PUTBACK;
2143 }
2144
2145 return NORMAL;
2146}
2147
2148static void
2149api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2150{
2151 int i;
2152 SV **arg = PL_stack_base + ax;
2153 int items = PL_stack_sp - arg + 1;
2154
2155 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2156
2157 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2158 && PL_op->op_ppaddr != pp_slf)
2159 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2160
2161 CvFLAGS (cv) |= CVf_SLF;
2162 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2163 slf_cv = cv;
2164
2165 /* we patch the op, and then re-run the whole call */
2166 /* we have to put the same argument on the stack for this to work */
2167 /* and this will be done by pp_restore */
2168 slf_restore.op_next = (OP *)&slf_restore;
2169 slf_restore.op_type = OP_CUSTOM;
2170 slf_restore.op_ppaddr = pp_restore;
2171 slf_restore.op_first = PL_op;
2172
2173 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2174
2175 if (PL_op->op_flags & OPf_STACKED)
2176 {
2177 if (items > slf_arga)
2178 {
2179 slf_arga = items;
2180 free (slf_argv);
2181 slf_argv = malloc (slf_arga * sizeof (SV *));
2182 }
2183
2184 slf_argc = items;
2185
2186 for (i = 0; i < items; ++i)
2187 slf_argv [i] = SvREFCNT_inc (arg [i]);
2188 }
2189 else
2190 slf_argc = 0;
2191
2192 PL_op->op_ppaddr = pp_slf;
2193 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2194
2195 PL_op = (OP *)&slf_restore;
2196}
1742 2197
1743/*****************************************************************************/ 2198/*****************************************************************************/
1744/* PerlIO::cede */ 2199/* PerlIO::cede */
1745 2200
1746typedef struct 2201typedef struct
… …
1814 PerlIOBuf_get_cnt, 2269 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 2270 PerlIOBuf_set_ptrcnt,
1816}; 2271};
1817 2272
1818/*****************************************************************************/ 2273/*****************************************************************************/
2274/* Coro::Semaphore & Coro::Signal */
1819 2275
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 * 2276static SV *
1831pp_restore (pTHX) 2277coro_waitarray_new (pTHX_ int count)
1832{ 2278{
1833 dSP; 2279 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2280 AV *av = newAV ();
2281 SV **ary;
1834 2282
1835 PUSHMARK (SP); 2283 /* unfortunately, building manually saves memory */
2284 Newx (ary, 2, SV *);
2285 AvALLOC (av) = ary;
2286 /*AvARRAY (av) = ary;*/
2287 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2288 AvMAX (av) = 1;
2289 AvFILLp (av) = 0;
2290 ary [0] = newSViv (count);
1836 2291
1837 EXTEND (SP, 3); 2292 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} 2293}
1845 2294
1846static void 2295/* 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 2296
1852static void 2297static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2298coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2299{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2300 SV *count_sv = AvARRAY (av)[0];
2301 IV count = SvIVX (count_sv);
1856 2302
1857 frame->prepare = slf_prepare_set_stacklevel; 2303 count += adjust;
1858 frame->check = slf_check_nop; 2304 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2305
1862static void 2306 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2307 while (count > 0 && AvFILLp (av) > 0)
1864{
1865 SV **arg = (SV **)slf_frame.data;
1866
1867 prepare_transfer (aTHX_ 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 { 2308 {
1921 /* first iteration */ 2309 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 2310
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2311 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2312 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2313 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2314 cb = av_shift (av);
1931 2315
1932 /* pop args */ 2316 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2317 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2318 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2319 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2320 }
1942 2321 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 { 2322 {
1973 if (sp == bot) 2323 dSP;
1974 XPUSHs (&PL_sv_undef); 2324 PUSHMARK (SP);
1975 2325 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1976 SP = bot + 1; 2326 PUTBACK;
2327 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1977 } 2328 }
1978 2329
1979 PUTBACK; 2330 SvREFCNT_dec (cb);
1980 } 2331 }
1981
1982 return NORMAL;
1983} 2332}
1984 2333
1985static void 2334static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2335coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1987{ 2336{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2337 /* call $sem->adjust (0) to possibly wake up some other waiters */
1989 2338 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} 2339}
2017
2018/*****************************************************************************/
2019 2340
2020static int 2341static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2342slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2022{ 2343{
2023 AV *av = (AV *)frame->data; 2344 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0]; 2345 SV *count_sv = AvARRAY (av)[0];
2025 2346
2347 /* if we are about to throw, don't actually acquire the lock, just throw */
2348 if (CORO_THROW)
2349 return 0;
2026 if (SvIVX (count_sv) > 0) 2350 else if (SvIVX (count_sv) > 0)
2027 { 2351 {
2352 SvSTATE_current->on_destroy = 0;
2353
2354 if (acquire)
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2355 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2356 else
2357 coro_semaphore_adjust (aTHX_ av, 0);
2358
2029 return 0; 2359 return 0;
2030 } 2360 }
2031 else 2361 else
2032 { 2362 {
2033 int i; 2363 int i;
… …
2042 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2372 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2043 return 1; 2373 return 1;
2044 } 2374 }
2045} 2375}
2046 2376
2047static void 2377static int
2378slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2379{
2380 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2381}
2382
2383static int
2384slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2385{
2386 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2387}
2388
2389static void
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2390slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{ 2391{
2050 AV *av = (AV *)SvRV (arg [0]); 2392 AV *av = (AV *)SvRV (arg [0]);
2051 2393
2052 if (SvIVX (AvARRAY (av)[0]) > 0) 2394 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 { 2395 {
… …
2058 { 2400 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2401 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 2402
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2403 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule; 2404 frame->prepare = prepare_schedule;
2063 }
2064 2405
2406 /* to avoid race conditions when a woken-up coro gets terminated */
2407 /* we arrange for a temporary on_destroy that calls adjust (0) */
2408 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2409 }
2410}
2411
2412static void
2413slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2414{
2415 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 2416 frame->check = slf_check_semaphore_down;
2066
2067} 2417}
2418
2419static void
2420slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2421{
2422 if (items >= 2)
2423 {
2424 /* callback form */
2425 AV *av = (AV *)SvRV (arg [0]);
2426 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2427
2428 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2429
2430 if (SvIVX (AvARRAY (av)[0]) > 0)
2431 coro_semaphore_adjust (aTHX_ av, 0);
2432
2433 frame->prepare = prepare_nop;
2434 frame->check = slf_check_nop;
2435 }
2436 else
2437 {
2438 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2439 frame->check = slf_check_semaphore_wait;
2440 }
2441}
2442
2443/* signal */
2444
2445static void
2446coro_signal_wake (pTHX_ AV *av, int count)
2447{
2448 SvIVX (AvARRAY (av)[0]) = 0;
2449
2450 /* now signal count waiters */
2451 while (count > 0 && AvFILLp (av) > 0)
2452 {
2453 SV *cb;
2454
2455 /* swap first two elements so we can shift a waiter */
2456 cb = AvARRAY (av)[0];
2457 AvARRAY (av)[0] = AvARRAY (av)[1];
2458 AvARRAY (av)[1] = cb;
2459
2460 cb = av_shift (av);
2461
2462 api_ready (aTHX_ cb);
2463 sv_setiv (cb, 0); /* signal waiter */
2464 SvREFCNT_dec (cb);
2465
2466 --count;
2467 }
2468}
2469
2470static int
2471slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2472{
2473 /* if we are about to throw, also stop waiting */
2474 return SvROK ((SV *)frame->data) && !CORO_THROW;
2475}
2476
2477static void
2478slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2479{
2480 AV *av = (AV *)SvRV (arg [0]);
2481
2482 if (SvIVX (AvARRAY (av)[0]))
2483 {
2484 SvIVX (AvARRAY (av)[0]) = 0;
2485 frame->prepare = prepare_nop;
2486 frame->check = slf_check_nop;
2487 }
2488 else
2489 {
2490 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2491
2492 av_push (av, waiter);
2493
2494 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2495 frame->prepare = prepare_schedule;
2496 frame->check = slf_check_signal_wait;
2497 }
2498}
2499
2500/*****************************************************************************/
2501/* Coro::AIO */
2502
2503#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2504
2505/* helper storage struct */
2506struct io_state
2507{
2508 int errorno;
2509 I32 laststype; /* U16 in 5.10.0 */
2510 int laststatval;
2511 Stat_t statcache;
2512};
2513
2514static void
2515coro_aio_callback (pTHX_ CV *cv)
2516{
2517 dXSARGS;
2518 AV *state = (AV *)GENSUB_ARG;
2519 SV *coro = av_pop (state);
2520 SV *data_sv = newSV (sizeof (struct io_state));
2521
2522 av_extend (state, items - 1);
2523
2524 sv_upgrade (data_sv, SVt_PV);
2525 SvCUR_set (data_sv, sizeof (struct io_state));
2526 SvPOK_only (data_sv);
2527
2528 {
2529 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2530
2531 data->errorno = errno;
2532 data->laststype = PL_laststype;
2533 data->laststatval = PL_laststatval;
2534 data->statcache = PL_statcache;
2535 }
2536
2537 /* now build the result vector out of all the parameters and the data_sv */
2538 {
2539 int i;
2540
2541 for (i = 0; i < items; ++i)
2542 av_push (state, SvREFCNT_inc_NN (ST (i)));
2543 }
2544
2545 av_push (state, data_sv);
2546
2547 api_ready (aTHX_ coro);
2548 SvREFCNT_dec (coro);
2549 SvREFCNT_dec ((AV *)state);
2550}
2551
2552static int
2553slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2554{
2555 AV *state = (AV *)frame->data;
2556
2557 /* if we are about to throw, return early */
2558 /* this does not cancel the aio request, but at least */
2559 /* it quickly returns */
2560 if (CORO_THROW)
2561 return 0;
2562
2563 /* one element that is an RV? repeat! */
2564 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2565 return 1;
2566
2567 /* restore status */
2568 {
2569 SV *data_sv = av_pop (state);
2570 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2571
2572 errno = data->errorno;
2573 PL_laststype = data->laststype;
2574 PL_laststatval = data->laststatval;
2575 PL_statcache = data->statcache;
2576
2577 SvREFCNT_dec (data_sv);
2578 }
2579
2580 /* push result values */
2581 {
2582 dSP;
2583 int i;
2584
2585 EXTEND (SP, AvFILLp (state) + 1);
2586 for (i = 0; i <= AvFILLp (state); ++i)
2587 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2588
2589 PUTBACK;
2590 }
2591
2592 return 0;
2593}
2594
2595static void
2596slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2597{
2598 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2599 SV *coro_hv = SvRV (coro_current);
2600 struct coro *coro = SvSTATE_hv (coro_hv);
2601
2602 /* put our coroutine id on the state arg */
2603 av_push (state, SvREFCNT_inc_NN (coro_hv));
2604
2605 /* first see whether we have a non-zero priority and set it as AIO prio */
2606 if (coro->prio)
2607 {
2608 dSP;
2609
2610 static SV *prio_cv;
2611 static SV *prio_sv;
2612
2613 if (expect_false (!prio_cv))
2614 {
2615 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2616 prio_sv = newSViv (0);
2617 }
2618
2619 PUSHMARK (SP);
2620 sv_setiv (prio_sv, coro->prio);
2621 XPUSHs (prio_sv);
2622
2623 PUTBACK;
2624 call_sv (prio_cv, G_VOID | G_DISCARD);
2625 }
2626
2627 /* now call the original request */
2628 {
2629 dSP;
2630 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2631 int i;
2632
2633 PUSHMARK (SP);
2634
2635 /* first push all args to the stack */
2636 EXTEND (SP, items + 1);
2637
2638 for (i = 0; i < items; ++i)
2639 PUSHs (arg [i]);
2640
2641 /* now push the callback closure */
2642 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2643
2644 /* now call the AIO function - we assume our request is uncancelable */
2645 PUTBACK;
2646 call_sv ((SV *)req, G_VOID | G_DISCARD);
2647 }
2648
2649 /* now that the requets is going, we loop toll we have a result */
2650 frame->data = (void *)state;
2651 frame->prepare = prepare_schedule;
2652 frame->check = slf_check_aio_req;
2653}
2654
2655static void
2656coro_aio_req_xs (pTHX_ CV *cv)
2657{
2658 dXSARGS;
2659
2660 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2661
2662 XSRETURN_EMPTY;
2663}
2664
2665/*****************************************************************************/
2068 2666
2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2667MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2070 2668
2071PROTOTYPES: DISABLE 2669PROTOTYPES: DISABLE
2072 2670
2073BOOT: 2671BOOT:
2074{ 2672{
2075#ifdef USE_ITHREADS 2673#ifdef USE_ITHREADS
2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD 2674# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT; 2675 coro_thx = PERL_GET_CONTEXT;
2079# endif 2676# endif
2080#endif 2677#endif
2081 BOOT_PAGESIZE; 2678 BOOT_PAGESIZE;
… …
2101 main_mainstack = PL_mainstack; 2698 main_mainstack = PL_mainstack;
2102 main_top_env = PL_top_env; 2699 main_top_env = PL_top_env;
2103 2700
2104 while (main_top_env->je_prev) 2701 while (main_top_env->je_prev)
2105 main_top_env = main_top_env->je_prev; 2702 main_top_env = main_top_env->je_prev;
2703
2704 {
2705 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2706
2707 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2708 hv_store_ent (PL_custom_op_names, slf,
2709 newSVpv ("coro_slf", 0), 0);
2710
2711 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2712 hv_store_ent (PL_custom_op_descs, slf,
2713 newSVpv ("coro schedule like function", 0), 0);
2714 }
2106 2715
2107 coroapi.ver = CORO_API_VERSION; 2716 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION; 2717 coroapi.rev = CORO_API_REVISION;
2109 2718
2110 coroapi.transfer = api_transfer; 2719 coroapi.transfer = api_transfer;
… …
2128 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2737 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2129} 2738}
2130 2739
2131SV * 2740SV *
2132new (char *klass, ...) 2741new (char *klass, ...)
2742 ALIAS:
2743 Coro::new = 1
2133 CODE: 2744 CODE:
2134{ 2745{
2135 struct coro *coro; 2746 struct coro *coro;
2136 MAGIC *mg; 2747 MAGIC *mg;
2137 HV *hv; 2748 HV *hv;
2749 CV *cb;
2138 int i; 2750 int i;
2751
2752 if (items > 1)
2753 {
2754 cb = coro_sv_2cv (aTHX_ ST (1));
2755
2756 if (!ix)
2757 {
2758 if (CvISXSUB (cb))
2759 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2760
2761 if (!CvROOT (cb))
2762 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2763 }
2764 }
2139 2765
2140 Newz (0, coro, 1, struct coro); 2766 Newz (0, coro, 1, struct coro);
2141 coro->args = newAV (); 2767 coro->args = newAV ();
2142 coro->flags = CF_NEW; 2768 coro->flags = CF_NEW;
2143 2769
… …
2148 coro->hv = hv = newHV (); 2774 coro->hv = hv = newHV ();
2149 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2775 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2150 mg->mg_flags |= MGf_DUP; 2776 mg->mg_flags |= MGf_DUP;
2151 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2777 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2152 2778
2779 if (items > 1)
2780 {
2153 av_extend (coro->args, items - 1); 2781 av_extend (coro->args, items - 1 + ix - 1);
2782
2783 if (ix)
2784 {
2785 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2786 cb = cv_coro_run;
2787 }
2788
2789 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2790
2154 for (i = 1; i < items; i++) 2791 for (i = 2; i < items; i++)
2155 av_push (coro->args, newSVsv (ST (i))); 2792 av_push (coro->args, newSVsv (ST (i)));
2793 }
2156} 2794}
2157 OUTPUT: 2795 OUTPUT:
2158 RETVAL 2796 RETVAL
2159
2160void
2161_set_stacklevel (...)
2162 CODE:
2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2164 2797
2165void 2798void
2166transfer (...) 2799transfer (...)
2167 PROTOTYPE: $$ 2800 PROTOTYPE: $$
2168 CODE: 2801 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2802 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2170 2803
2171bool 2804bool
2172_destroy (SV *coro_sv) 2805_destroy (SV *coro_sv)
2173 CODE: 2806 CODE:
2174 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2807 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2292 2925
2293void 2926void
2294throw (Coro::State self, SV *throw = &PL_sv_undef) 2927throw (Coro::State self, SV *throw = &PL_sv_undef)
2295 PROTOTYPE: $;$ 2928 PROTOTYPE: $;$
2296 CODE: 2929 CODE:
2930{
2931 struct coro *current = SvSTATE_current;
2932 SV **throwp = self == current ? &CORO_THROW : &self->except;
2297 SvREFCNT_dec (self->throw); 2933 SvREFCNT_dec (*throwp);
2298 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2934 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2935}
2299 2936
2300void 2937void
2301api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2938api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2302 PROTOTYPE: $;$ 2939 PROTOTYPE: $;$
2303 C_ARGS: aTHX_ coro, flags 2940 C_ARGS: aTHX_ coro, flags
… …
2334 2971
2335void 2972void
2336force_cctx () 2973force_cctx ()
2337 PROTOTYPE: 2974 PROTOTYPE:
2338 CODE: 2975 CODE:
2339 struct coro *coro = SvSTATE (coro_current);
2340 coro->cctx->idle_sp = 0; 2976 SvSTATE_current->cctx->idle_sp = 0;
2341 2977
2342void 2978void
2343swap_defsv (Coro::State self) 2979swap_defsv (Coro::State self)
2344 PROTOTYPE: $ 2980 PROTOTYPE: $
2345 ALIAS: 2981 ALIAS:
… …
2353 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2989 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2354 2990
2355 SV *tmp = *src; *src = *dst; *dst = tmp; 2991 SV *tmp = *src; *src = *dst; *dst = tmp;
2356 } 2992 }
2357 2993
2994
2358MODULE = Coro::State PACKAGE = Coro 2995MODULE = Coro::State PACKAGE = Coro
2359 2996
2360BOOT: 2997BOOT:
2361{ 2998{
2362 int i; 2999 int i;
2363 3000
2364 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3001 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2365 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3002 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2366 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3003 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2367 3004 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3005 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2368 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3006 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2369 SvREADONLY_on (coro_current); 3007
3008 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3009 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3010 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3011 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2370 3012
2371 coro_stash = gv_stashpv ("Coro", TRUE); 3013 coro_stash = gv_stashpv ("Coro", TRUE);
2372 3014
2373 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3015 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2374 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3016 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2382 3024
2383 { 3025 {
2384 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3026 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2385 3027
2386 coroapi.schedule = api_schedule; 3028 coroapi.schedule = api_schedule;
3029 coroapi.schedule_to = api_schedule_to;
2387 coroapi.cede = api_cede; 3030 coroapi.cede = api_cede;
2388 coroapi.cede_notself = api_cede_notself; 3031 coroapi.cede_notself = api_cede_notself;
2389 coroapi.ready = api_ready; 3032 coroapi.ready = api_ready;
2390 coroapi.is_ready = api_is_ready; 3033 coroapi.is_ready = api_is_ready;
2391 coroapi.nready = coro_nready; 3034 coroapi.nready = coro_nready;
2392 coroapi.current = coro_current; 3035 coroapi.current = coro_current;
2393 3036
2394 GCoroAPI = &coroapi; 3037 /*GCoroAPI = &coroapi;*/
2395 sv_setiv (sv, (IV)&coroapi); 3038 sv_setiv (sv, (IV)&coroapi);
2396 SvREADONLY_on (sv); 3039 SvREADONLY_on (sv);
2397 } 3040 }
2398} 3041}
2399 3042
2400void 3043void
2401schedule (...) 3044schedule (...)
2402 CODE: 3045 CODE:
2403 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3046 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3047
3048void
3049schedule_to (...)
3050 CODE:
3051 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3052
3053void
3054cede_to (...)
3055 CODE:
3056 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2404 3057
2405void 3058void
2406cede (...) 3059cede (...)
2407 CODE: 3060 CODE:
2408 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3061 CORO_EXECUTE_SLF_XS (slf_init_cede);
2409 3062
2410void 3063void
2411cede_notself (...) 3064cede_notself (...)
2412 CODE: 3065 CODE:
2413 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3066 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2414 3067
2415void 3068void
2416_set_current (SV *current) 3069_set_current (SV *current)
2417 PROTOTYPE: $ 3070 PROTOTYPE: $
2418 CODE: 3071 CODE:
… …
2421 3074
2422void 3075void
2423_set_readyhook (SV *hook) 3076_set_readyhook (SV *hook)
2424 PROTOTYPE: $ 3077 PROTOTYPE: $
2425 CODE: 3078 CODE:
2426 LOCK;
2427 SvREFCNT_dec (coro_readyhook); 3079 SvREFCNT_dec (coro_readyhook);
2428 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3080 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2429 UNLOCK;
2430 3081
2431int 3082int
2432prio (Coro::State coro, int newprio = 0) 3083prio (Coro::State coro, int newprio = 0)
2433 PROTOTYPE: $;$ 3084 PROTOTYPE: $;$
2434 ALIAS: 3085 ALIAS:
… …
2465 CODE: 3116 CODE:
2466 RETVAL = coro_nready; 3117 RETVAL = coro_nready;
2467 OUTPUT: 3118 OUTPUT:
2468 RETVAL 3119 RETVAL
2469 3120
2470# for async_pool speedup
2471void 3121void
2472_pool_1 (SV *cb) 3122_pool_handler (...)
2473 CODE: 3123 CODE:
2474{ 3124 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2475 struct coro *coro = SvSTATE (coro_current);
2476 HV *hv = (HV *)SvRV (coro_current);
2477 AV *defav = GvAV (PL_defgv);
2478 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2479 AV *invoke_av;
2480 int i, len;
2481 3125
2482 if (!invoke) 3126void
3127async_pool (SV *cv, ...)
3128 PROTOTYPE: &@
3129 PPCODE:
3130{
3131 HV *hv = (HV *)av_pop (av_async_pool);
3132 AV *av = newAV ();
3133 SV *cb = ST (0);
3134 int i;
3135
3136 av_extend (av, items - 2);
3137 for (i = 1; i < items; ++i)
3138 av_push (av, SvREFCNT_inc_NN (ST (i)));
3139
3140 if ((SV *)hv == &PL_sv_undef)
2483 { 3141 {
2484 SV *old = PL_diehook; 3142 PUSHMARK (SP);
2485 PL_diehook = 0; 3143 EXTEND (SP, 2);
2486 SvREFCNT_dec (old); 3144 PUSHs (sv_Coro);
2487 croak ("\3async_pool terminate\2\n"); 3145 PUSHs ((SV *)cv_pool_handler);
3146 PUTBACK;
3147 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3148 SPAGAIN;
3149
3150 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2488 } 3151 }
2489 3152
2490 SvREFCNT_dec (coro->saved_deffh);
2491 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2492
2493 hv_store (hv, "desc", sizeof ("desc") - 1,
2494 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2495
2496 invoke_av = (AV *)SvRV (invoke);
2497 len = av_len (invoke_av);
2498
2499 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2500
2501 if (len > 0)
2502 { 3153 {
2503 av_fill (defav, len - 1); 3154 struct coro *coro = SvSTATE_hv (hv);
2504 for (i = 0; i < len; ++i) 3155
2505 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3156 assert (!coro->invoke_cb);
3157 assert (!coro->invoke_av);
3158 coro->invoke_cb = SvREFCNT_inc (cb);
3159 coro->invoke_av = av;
2506 } 3160 }
2507}
2508 3161
2509void 3162 api_ready (aTHX_ (SV *)hv);
2510_pool_2 (SV *cb) 3163
3164 if (GIMME_V != G_VOID)
3165 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3166 else
3167 SvREFCNT_dec (hv);
3168}
3169
3170SV *
3171rouse_cb ()
3172 PROTOTYPE:
2511 CODE: 3173 CODE:
2512{ 3174 RETVAL = coro_new_rouse_cb (aTHX);
2513 struct coro *coro = SvSTATE (coro_current);
2514
2515 sv_setsv (cb, &PL_sv_undef);
2516
2517 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2518 coro->saved_deffh = 0;
2519
2520 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2521 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2522 {
2523 SV *old = PL_diehook;
2524 PL_diehook = 0;
2525 SvREFCNT_dec (old);
2526 croak ("\3async_pool terminate\2\n");
2527 }
2528
2529 av_clear (GvAV (PL_defgv));
2530 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2531 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2532
2533 coro->prio = 0;
2534
2535 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2536 api_trace (aTHX_ coro_current, 0);
2537
2538 av_push (av_async_pool, newSVsv (coro_current));
2539}
2540
2541#if 0
2542
2543void
2544_generator_call (...)
2545 PROTOTYPE: @
2546 PPCODE:
2547 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2548 xxxx
2549 abort ();
2550
2551SV *
2552gensub (SV *sub, ...)
2553 PROTOTYPE: &;@
2554 CODE:
2555{
2556 struct coro *coro;
2557 MAGIC *mg;
2558 CV *xcv;
2559 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2560 int i;
2561
2562 CvGV (ncv) = CvGV (cv);
2563 CvFILE (ncv) = CvFILE (cv);
2564
2565 Newz (0, coro, 1, struct coro);
2566 coro->args = newAV ();
2567 coro->flags = CF_NEW;
2568
2569 av_extend (coro->args, items - 1);
2570 for (i = 1; i < items; i++)
2571 av_push (coro->args, newSVsv (ST (i)));
2572
2573 CvISXSUB_on (ncv);
2574 CvXSUBANY (ncv).any_ptr = (void *)coro;
2575
2576 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2577
2578 CvXSUB (ncv) = CvXSUB (xcv);
2579 CvANON_on (ncv);
2580
2581 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2582 RETVAL = newRV_noinc ((SV *)ncv);
2583}
2584 OUTPUT: 3175 OUTPUT:
2585 RETVAL 3176 RETVAL
2586 3177
2587#endif
2588
2589
2590MODULE = Coro::State PACKAGE = Coro::AIO
2591
2592void 3178void
2593_get_state (SV *self) 3179rouse_wait (...)
2594 PROTOTYPE: $ 3180 PROTOTYPE: ;$
2595 PPCODE: 3181 PPCODE:
2596{ 3182 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2597 AV *defav = GvAV (PL_defgv);
2598 AV *av = newAV ();
2599 int i;
2600 SV *data_sv = newSV (sizeof (struct io_state));
2601 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2602 SvCUR_set (data_sv, sizeof (struct io_state));
2603 SvPOK_only (data_sv);
2604
2605 data->errorno = errno;
2606 data->laststype = PL_laststype;
2607 data->laststatval = PL_laststatval;
2608 data->statcache = PL_statcache;
2609
2610 av_extend (av, AvFILLp (defav) + 1 + 1);
2611
2612 for (i = 0; i <= AvFILLp (defav); ++i)
2613 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2614
2615 av_push (av, data_sv);
2616
2617 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2618
2619 api_ready (aTHX_ self);
2620}
2621
2622void
2623_set_state (SV *state)
2624 PROTOTYPE: $
2625 PPCODE:
2626{
2627 AV *av = (AV *)SvRV (state);
2628 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2629 int i;
2630
2631 errno = data->errorno;
2632 PL_laststype = data->laststype;
2633 PL_laststatval = data->laststatval;
2634 PL_statcache = data->statcache;
2635
2636 EXTEND (SP, AvFILLp (av));
2637 for (i = 0; i < AvFILLp (av); ++i)
2638 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2639}
2640
2641
2642MODULE = Coro::State PACKAGE = Coro::AnyEvent
2643
2644BOOT:
2645 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2646
2647void
2648_schedule (...)
2649 CODE:
2650{
2651 static int incede;
2652
2653 api_cede_notself (aTHX);
2654
2655 ++incede;
2656 while (coro_nready >= incede && api_cede (aTHX))
2657 ;
2658
2659 sv_setsv (sv_activity, &PL_sv_undef);
2660 if (coro_nready >= incede)
2661 {
2662 PUSHMARK (SP);
2663 PUTBACK;
2664 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2665 SPAGAIN;
2666 }
2667
2668 --incede;
2669}
2670 3183
2671 3184
2672MODULE = Coro::State PACKAGE = PerlIO::cede 3185MODULE = Coro::State PACKAGE = PerlIO::cede
2673 3186
2674BOOT: 3187BOOT:
2675 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3188 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2676 3189
3190
2677MODULE = Coro::State PACKAGE = Coro::Semaphore 3191MODULE = Coro::State PACKAGE = Coro::Semaphore
2678 3192
2679SV * 3193SV *
2680new (SV *klass, SV *count_ = 0) 3194new (SV *klass, SV *count = 0)
2681 CODE: 3195 CODE:
2682{ 3196 RETVAL = sv_bless (
2683 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3197 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2684 AV *av = newAV (); 3198 GvSTASH (CvGV (cv))
2685 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3199 );
2686 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3200 OUTPUT:
2687} 3201 RETVAL
3202
3203# helper for Coro::Channel
3204SV *
3205_alloc (int count)
3206 CODE:
3207 RETVAL = coro_waitarray_new (aTHX_ count);
2688 OUTPUT: 3208 OUTPUT:
2689 RETVAL 3209 RETVAL
2690 3210
2691SV * 3211SV *
2692count (SV *self) 3212count (SV *self)
… …
2698void 3218void
2699up (SV *self, int adjust = 1) 3219up (SV *self, int adjust = 1)
2700 ALIAS: 3220 ALIAS:
2701 adjust = 1 3221 adjust = 1
2702 CODE: 3222 CODE:
2703{ 3223 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2704 AV *av = (AV *)SvRV (self);
2705 SV *count_sv = AvARRAY (av)[0];
2706 IV count = SvIVX (count_sv);
2707
2708 count += ix ? adjust : 1;
2709 SvIVX (count_sv) = count;
2710
2711 /* now wake up as many waiters as possible */
2712 while (count > 0 && AvFILLp (av) >= count)
2713 {
2714 SV *cb;
2715
2716 /* swap first two elements so we can shift a waiter */
2717 AvARRAY (av)[0] = AvARRAY (av)[1];
2718 AvARRAY (av)[1] = count_sv;
2719 cb = av_shift (av);
2720
2721 if (SvOBJECT (cb))
2722 api_ready (aTHX_ cb);
2723 else
2724 croak ("callbacks not yet supported");
2725
2726 SvREFCNT_dec (cb);
2727 }
2728}
2729 3224
2730void 3225void
2731down (SV *self) 3226down (...)
2732 CODE: 3227 CODE:
2733 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3228 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3229
3230void
3231wait (...)
3232 CODE:
3233 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2734 3234
2735void 3235void
2736try (SV *self) 3236try (SV *self)
2737 PPCODE: 3237 PPCODE:
2738{ 3238{
… …
2750 XSRETURN_NO; 3250 XSRETURN_NO;
2751} 3251}
2752 3252
2753void 3253void
2754waiters (SV *self) 3254waiters (SV *self)
2755 CODE: 3255 PPCODE:
2756{ 3256{
2757 AV *av = (AV *)SvRV (self); 3257 AV *av = (AV *)SvRV (self);
3258 int wcount = AvFILLp (av) + 1 - 1;
2758 3259
2759 if (GIMME_V == G_SCALAR) 3260 if (GIMME_V == G_SCALAR)
2760 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3261 XPUSHs (sv_2mortal (newSViv (wcount)));
2761 else 3262 else
2762 { 3263 {
2763 int i; 3264 int i;
2764 EXTEND (SP, AvFILLp (av) + 1 - 1); 3265 EXTEND (SP, wcount);
2765 for (i = 1; i <= AvFILLp (av); ++i) 3266 for (i = 1; i <= wcount; ++i)
2766 PUSHs (newSVsv (AvARRAY (av)[i])); 3267 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2767 } 3268 }
2768} 3269}
2769 3270
3271MODULE = Coro::State PACKAGE = Coro::Signal
3272
3273SV *
3274new (SV *klass)
3275 CODE:
3276 RETVAL = sv_bless (
3277 coro_waitarray_new (aTHX_ 0),
3278 GvSTASH (CvGV (cv))
3279 );
3280 OUTPUT:
3281 RETVAL
3282
3283void
3284wait (...)
3285 CODE:
3286 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3287
3288void
3289broadcast (SV *self)
3290 CODE:
3291{
3292 AV *av = (AV *)SvRV (self);
3293 coro_signal_wake (aTHX_ av, AvFILLp (av));
3294}
3295
3296void
3297send (SV *self)
3298 CODE:
3299{
3300 AV *av = (AV *)SvRV (self);
3301
3302 if (AvFILLp (av))
3303 coro_signal_wake (aTHX_ av, 1);
3304 else
3305 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3306}
3307
3308IV
3309awaited (SV *self)
3310 CODE:
3311 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3312 OUTPUT:
3313 RETVAL
3314
3315
3316MODULE = Coro::State PACKAGE = Coro::AnyEvent
3317
3318BOOT:
3319 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3320
3321void
3322_schedule (...)
3323 CODE:
3324{
3325 static int incede;
3326
3327 api_cede_notself (aTHX);
3328
3329 ++incede;
3330 while (coro_nready >= incede && api_cede (aTHX))
3331 ;
3332
3333 sv_setsv (sv_activity, &PL_sv_undef);
3334 if (coro_nready >= incede)
3335 {
3336 PUSHMARK (SP);
3337 PUTBACK;
3338 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3339 }
3340
3341 --incede;
3342}
3343
3344
3345MODULE = Coro::State PACKAGE = Coro::AIO
3346
3347void
3348_register (char *target, char *proto, SV *req)
3349 CODE:
3350{
3351 CV *req_cv = coro_sv_2cv (aTHX_ req);
3352 /* newXSproto doesn't return the CV on 5.8 */
3353 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3354 sv_setpv ((SV *)slf_cv, proto);
3355 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3356}
3357

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