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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 1.312 by root, Thu Nov 20 03:10:30 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
100 103
101/* 5.8.7 */ 104/* 5.8.7 */
102#ifndef SvRV_set 105#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 107#endif
… …
117#endif 120#endif
118 121
119/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 123 * portable way as possible. */
121#if __GNUC__ >= 4 124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 126# define STACKLEVEL __builtin_frame_address (0)
123#else 127#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel)
125#endif 130#endif
126 131
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 133
129#if __GNUC__ >= 3 134#if __GNUC__ >= 3
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
141 146
142#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
143 148
144#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
145 151
146#ifdef USE_ITHREADS 152#ifdef USE_ITHREADS
147
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 153# if CORO_PTHREAD
152static void *coro_thx; 154static void *coro_thx;
153# endif 155# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 156#endif
161 157
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
177static double (*nvtime)(); /* so why doesn't it take void? */ 158static double (*nvtime)(); /* so why doesn't it take void? */
159
160/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX);
178 163
179static U32 cctx_gen; 164static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 168static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 171
188static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 174static SV *rv_diehook;
191static SV *rv_warnhook; 175static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 176static HV *hv_sig; /* %SIG */
193 177
194/* async_pool helper stuff */ 178/* async_pool helper stuff */
195static SV *sv_pool_rss; 179static SV *sv_pool_rss;
196static SV *sv_pool_size; 180static SV *sv_pool_size;
181static SV *sv_async_pool_idle;
197static AV *av_async_pool; 182static AV *av_async_pool;
183static SV *sv_Coro;
184static CV *cv_pool_handler;
185static CV *cv_coro_new;
198 186
199/* Coro::AnyEvent */ 187/* Coro::AnyEvent */
200static SV *sv_activity; 188static SV *sv_activity;
201 189
202static struct coro_cctx *cctx_first; 190static struct coro_cctx *cctx_first;
… …
257/* this is a structure representing a perl-level coroutine */ 245/* this is a structure representing a perl-level coroutine */
258struct coro { 246struct coro {
259 /* the C coroutine allocated to this perl coroutine, if any */ 247 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 248 coro_cctx *cctx;
261 249
262 /* process data */ 250 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 251 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 252 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 253 perl_slots *slot; /* basically the saved sp */
266 254
255 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 256 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */ 257 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 258 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 259 HV *hv; /* the perl hash associated with this coro, if any */
260 void (*on_destroy)(pTHX_ struct coro *coro);
271 261
272 /* statistics */ 262 /* statistics */
273 int usecount; /* number of transfers to this coro */ 263 int usecount; /* number of transfers to this coro */
274 264
275 /* coro process data */ 265 /* coro process data */
276 int prio; 266 int prio;
277 SV *throw; /* exception to be thrown */ 267 SV *except; /* exception to be thrown */
268 SV *rouse_cb;
278 269
279 /* async_pool */ 270 /* async_pool */
280 SV *saved_deffh; 271 SV *saved_deffh;
272 SV *invoke_cb;
273 AV *invoke_av;
281 274
282 /* linked list */ 275 /* linked list */
283 struct coro *next, *prev; 276 struct coro *next, *prev;
284}; 277};
285 278
286typedef struct coro *Coro__State; 279typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 280typedef struct coro *Coro__State_or_hashref;
288 281
282/* the following variables are effectively part of the perl context */
283/* and get copied between struct coro and these variables */
284/* the mainr easonw e don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 285static struct CoroSLF slf_frame; /* the current slf frame */
290 286
291/** Coro ********************************************************************/ 287/** Coro ********************************************************************/
292 288
293#define PRIO_MAX 3 289#define PRIO_MAX 3
… …
299 295
300/* for Coro.pm */ 296/* for Coro.pm */
301static SV *coro_current; 297static SV *coro_current;
302static SV *coro_readyhook; 298static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 299static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
300static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 301static struct coro *coro_first;
305#define coro_nready coroapi.nready 302#define coro_nready coroapi.nready
306 303
307/** lowlevel stuff **********************************************************/ 304/** lowlevel stuff **********************************************************/
308 305
… …
332#if PERL_VERSION_ATLEAST (5,10,0) 329#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create); 331 get_hv (name, create);
335#endif 332#endif
336 return get_hv (name, create); 333 return get_hv (name, create);
334}
335
336/* may croak */
337INLINE CV *
338coro_sv_2cv (pTHX_ SV *sv)
339{
340 HV *st;
341 GV *gvp;
342 return sv_2cv (sv, &st, &gvp, 0);
337} 343}
338 344
339static AV * 345static AV *
340coro_clone_padlist (pTHX_ CV *cv) 346coro_clone_padlist (pTHX_ CV *cv)
341{ 347{
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 401 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 402
397 return 0; 403 return 0;
398} 404}
399 405
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 406#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 407#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 408
403static MGVTBL coro_cv_vtbl = { 409static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 410 0, 0, 0, 0,
405 coro_cv_free 411 coro_cv_free
406}; 412};
407 413
414#define CORO_MAGIC_NN(sv, type) \
415 (expect_true (SvMAGIC (sv)->mg_type == type) \
416 ? SvMAGIC (sv) \
417 : mg_find (sv, type))
418
408#define CORO_MAGIC(sv, type) \ 419#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 420 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 421 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 422 : 0)
414 423
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 424#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) 425#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417 426
418INLINE struct coro * 427INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 428SvSTATE_ (pTHX_ SV *coro)
420{ 429{
421 HV *stash; 430 HV *stash;
… …
438 mg = CORO_MAGIC_state (coro); 447 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 448 return (struct coro *)mg->mg_ptr;
440} 449}
441 450
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 451#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
452
453/* faster than SvSTATE, but expects a coroutine hv */
454#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
455#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 456
444/* the next two functions merely cache the padlists */ 457/* the next two functions merely cache the padlists */
445static void 458static void
446get_padlist (pTHX_ CV *cv) 459get_padlist (pTHX_ CV *cv)
447{ 460{
… …
453 else 466 else
454 { 467 {
455#if CORO_PREFER_PERL_FUNCTIONS 468#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 469 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 470 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 471 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 472 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 473 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 474 SvREFCNT_dec (cp);
462#else 475#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 476 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
515 } 528 }
516 529
517 PUTBACK; 530 PUTBACK;
518 } 531 }
519 532
520 slf_frame = c->slf_frame; 533 slf_frame = c->slf_frame;
534 CORO_THROW = c->except;
521} 535}
522 536
523static void 537static void
524save_perl (pTHX_ Coro__State c) 538save_perl (pTHX_ Coro__State c)
525{ 539{
540 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 541 c->slf_frame = slf_frame;
527 542
528 { 543 {
529 dSP; 544 dSP;
530 I32 cxix = cxstack_ix; 545 I32 cxix = cxstack_ix;
… …
605 * of perl.c:init_stacks, except that it uses less memory 620 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 621 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 622 * not usually need a lot of stackspace.
608 */ 623 */
609#if CORO_PREFER_PERL_FUNCTIONS 624#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 625# define coro_init_stacks(thx) init_stacks ()
611#else 626#else
612static void 627static void
613coro_init_stacks (pTHX) 628coro_init_stacks (pTHX)
614{ 629{
615 PL_curstackinfo = new_stackinfo(32, 8); 630 PL_curstackinfo = new_stackinfo(32, 8);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 693#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 694 Safefree (PL_retstack);
680#endif 695#endif
681} 696}
682 697
698#define CORO_RSS \
699 rss += sizeof (SYM (curstackinfo)); \
700 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
702 rss += SYM (tmps_max) * sizeof (SV *); \
703 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
704 rss += SYM (scopestack_max) * sizeof (I32); \
705 rss += SYM (savestack_max) * sizeof (ANY);
706
683static size_t 707static size_t
684coro_rss (pTHX_ struct coro *coro) 708coro_rss (pTHX_ struct coro *coro)
685{ 709{
686 size_t rss = sizeof (*coro); 710 size_t rss = sizeof (*coro);
687 711
688 if (coro->mainstack) 712 if (coro->mainstack)
689 { 713 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 714 if (coro->flags & CF_RUNNING)
694 { 715 {
695 slot = &tmp_slot; 716 #define SYM(sym) PL_ ## sym
696 717 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 718 #undef SYM
700 } 719 }
701 else 720 else
702 slot = coro->slot;
703
704 if (slot)
705 { 721 {
706 rss += sizeof (slot->curstackinfo); 722 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 723 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 724 #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 } 725 }
718 } 726 }
719 727
720 return rss; 728 return rss;
721} 729}
… …
823slf_check_nop (pTHX_ struct CoroSLF *frame) 831slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 832{
825 return 0; 833 return 0;
826} 834}
827 835
828static void 836static UNOP coro_setup_op;
837
838static void NOINLINE /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 839coro_setup (pTHX_ struct coro *coro)
830{ 840{
831 /* 841 /*
832 * emulate part of the perl startup here. 842 * emulate part of the perl startup here.
833 */ 843 */
… …
860 { 870 {
861 dSP; 871 dSP;
862 UNOP myop; 872 UNOP myop;
863 873
864 Zero (&myop, 1, UNOP); 874 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 875 myop.op_next = Nullop;
876 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 877 myop.op_flags = OPf_WANT_VOID;
867 878
868 PUSHMARK (SP); 879 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 880 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 881 PUTBACK;
871 PL_op = (OP *)&myop; 882 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 883 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 884 }
875 885
876 /* this newly created coroutine might be run on an existing cctx which most 886 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 887 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 888 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 889 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 890 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
891
892 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
893 coro_setup_op.op_next = PL_op;
894 coro_setup_op.op_type = OP_CUSTOM;
895 coro_setup_op.op_ppaddr = pp_slf;
896 /* no flags etc. required, as an init function won't be called */
897
898 PL_op = (OP *)&coro_setup_op;
899
900 /* copy throw, in case it was set before coro_setup */
901 CORO_THROW = coro->except;
881} 902}
882 903
883static void 904static void
884coro_destruct (pTHX_ struct coro *coro) 905coro_destruct (pTHX_ struct coro *coro)
885{ 906{
… …
909 930
910 SvREFCNT_dec (PL_diehook); 931 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook); 932 SvREFCNT_dec (PL_warnhook);
912 933
913 SvREFCNT_dec (coro->saved_deffh); 934 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 935 SvREFCNT_dec (coro->rouse_cb);
936 SvREFCNT_dec (coro->invoke_cb);
937 SvREFCNT_dec (coro->invoke_av);
915 938
916 coro_destruct_stacks (aTHX); 939 coro_destruct_stacks (aTHX);
917} 940}
918 941
919INLINE void 942INLINE void
… …
929static int 952static int
930runops_trace (pTHX) 953runops_trace (pTHX)
931{ 954{
932 COP *oldcop = 0; 955 COP *oldcop = 0;
933 int oldcxix = -2; 956 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 957 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx; 958 coro_cctx *cctx = coro->cctx;
936 959
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 960 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 961 {
939 PERL_ASYNC_CHECK (); 962 PERL_ASYNC_CHECK ();
… …
1006 SAVETMPS; 1029 SAVETMPS;
1007 EXTEND (SP, 3); 1030 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1031 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1032 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1033 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1034 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK; 1035 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1036 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); 1037 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN; 1038 SPAGAIN;
1016 FREETMPS; 1039 FREETMPS;
… …
1048 1071
1049 TAINT_NOT; 1072 TAINT_NOT;
1050 return 0; 1073 return 0;
1051} 1074}
1052 1075
1076static struct coro_cctx *cctx_ssl_cctx;
1077static struct CoroSLF cctx_ssl_frame;
1078
1053static void 1079static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1080slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1081{
1056 ta->prev = (struct coro *)cctx; 1082 ta->prev = (struct coro *)cctx_ssl_cctx;
1057 ta->next = 0; 1083 ta->next = 0;
1058} 1084}
1059 1085
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1086static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1087slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */ 1088{
1063/* also initialises PL_top_env */ 1089 *frame = cctx_ssl_frame;
1090
1091 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1092}
1093
1094/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1064static void NOINLINE 1095static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx) 1096cctx_prepare (pTHX_ coro_cctx *cctx)
1066{ 1097{
1067 dSP;
1068 UNOP myop;
1069
1070 PL_top_env = &PL_start_env; 1098 PL_top_env = &PL_start_env;
1071 1099
1072 if (cctx->flags & CC_TRACE) 1100 if (cctx->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1101 PL_runops = runops_trace;
1074 1102
1075 Zero (&myop, 1, UNOP); 1103 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1104 * that can lead to creation of a new cctx */
1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1105 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1106 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1078 1107
1079 PUSHMARK (SP); 1108 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1109 cctx_ssl_cctx = cctx;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1110 cctx_ssl_frame = slf_frame;
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1111
1083 PUTBACK; 1112 slf_frame.prepare = slf_prepare_set_stacklevel;
1084 PL_op = (OP *)&myop; 1113 slf_frame.check = slf_check_set_stacklevel;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1114}
1088 1115
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1116/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1117INLINE void
1091transfer_tail (pTHX) 1118transfer_tail (pTHX)
1092{ 1119{
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); 1120 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} 1121}
1109 1122
1110/* 1123/*
1111 * this is a _very_ stripped down perl interpreter ;) 1124 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1125 */
… …
1127 1140
1128 /* inject a fake subroutine call to cctx_init */ 1141 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1142 cctx_prepare (aTHX_ (coro_cctx *)arg);
1130 1143
1131 /* cctx_run is the alternative tail of transfer() */ 1144 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1145 transfer_tail (aTHX);
1134 1146
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1147 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1148 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1149 perl_run (PL_curinterp);
1150 /*
1151 * Unfortunately, there is no way to get at the return values of the
1152 * coro body here, as perl_run destroys these
1153 */
1138 1154
1139 /* 1155 /*
1140 * If perl-run returns we assume exit() was being called or the coro 1156 * 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) 1157 * 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 1158 * reason for perl_run to return. We try to exit by jumping to the
… …
1293/** coroutine switching *****************************************************/ 1309/** coroutine switching *****************************************************/
1294 1310
1295static void 1311static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1312transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1313{
1314 /* TODO: throwing up here is considered harmful */
1315
1298 if (expect_true (prev != next)) 1316 if (expect_true (prev != next))
1299 { 1317 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1318 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,"); 1319 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1302 1320
… …
1312#endif 1330#endif
1313 } 1331 }
1314} 1332}
1315 1333
1316/* always use the TRANSFER macro */ 1334/* always use the TRANSFER macro */
1317static void NOINLINE 1335static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1336transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1337{
1320 dSTACKLEVEL; 1338 dSTACKLEVEL;
1321 1339
1322 /* sometimes transfer is only called to set idle_sp */ 1340 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1341 if (expect_false (!next))
1324 { 1342 {
1325 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1343 ((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 */ 1344 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1345 }
1328 else if (expect_true (prev != next)) 1346 else if (expect_true (prev != next))
1329 { 1347 {
1330 coro_cctx *prev__cctx; 1348 coro_cctx *prev__cctx;
… …
1337 prev->flags |= CF_RUNNING; 1355 prev->flags |= CF_RUNNING;
1338 } 1356 }
1339 1357
1340 prev->flags &= ~CF_RUNNING; 1358 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1359 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1360
1345 /* first get rid of the old state */ 1361 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1362 save_perl (aTHX_ prev);
1347 1363
1348 if (expect_false (next->flags & CF_NEW)) 1364 if (expect_false (next->flags & CF_NEW))
… …
1357 1373
1358 prev__cctx = prev->cctx; 1374 prev__cctx = prev->cctx;
1359 1375
1360 /* possibly untie and reuse the cctx */ 1376 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1377 if (expect_true (
1362 prev__cctx->idle_sp == (void *)stacklevel 1378 prev__cctx->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1379 && !(prev__cctx->flags & CC_TRACE)
1364 && !force_cctx 1380 && !force_cctx
1365 )) 1381 ))
1366 { 1382 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1383 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
… …
1381 ++next->usecount; 1397 ++next->usecount;
1382 1398
1383 if (expect_true (!next->cctx)) 1399 if (expect_true (!next->cctx))
1384 next->cctx = cctx_get (aTHX); 1400 next->cctx = cctx_get (aTHX);
1385 1401
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)) 1402 if (expect_false (prev__cctx != next->cctx))
1390 { 1403 {
1391 prev__cctx->top_env = PL_top_env; 1404 prev__cctx->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1405 PL_top_env = next->cctx->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1406 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
… …
1406coro_state_destroy (pTHX_ struct coro *coro) 1419coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1420{
1408 if (coro->flags & CF_DESTROYED) 1421 if (coro->flags & CF_DESTROYED)
1409 return 0; 1422 return 0;
1410 1423
1424 if (coro->on_destroy)
1425 coro->on_destroy (aTHX_ coro);
1426
1411 coro->flags |= CF_DESTROYED; 1427 coro->flags |= CF_DESTROYED;
1412 1428
1413 if (coro->flags & CF_READY) 1429 if (coro->flags & CF_READY)
1414 { 1430 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1431 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1432 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1433 --coro_nready;
1419 UNLOCK;
1420 } 1434 }
1421 else 1435 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1436 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423 1437
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1438 if (coro->mainstack && coro->mainstack != main_mainstack)
… …
1436 1450
1437 coro->slot = 0; 1451 coro->slot = 0;
1438 } 1452 }
1439 1453
1440 cctx_destroy (coro->cctx); 1454 cctx_destroy (coro->cctx);
1455 SvREFCNT_dec (coro->startcv);
1441 SvREFCNT_dec (coro->args); 1456 SvREFCNT_dec (coro->args);
1457 SvREFCNT_dec (CORO_THROW);
1442 1458
1443 if (coro->next) coro->next->prev = coro->prev; 1459 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1460 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1461 if (coro == coro_first) coro_first = coro->next;
1446 1462
… …
1500 1516
1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1517 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1502 TRANSFER (ta, 1); 1518 TRANSFER (ta, 1);
1503} 1519}
1504 1520
1521/*****************************************************************************/
1522/* gensub: simple closure generation utility */
1523
1524#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1525
1526/* create a closure from XS, returns a code reference */
1527/* the arg can be accessed via GENSUB_ARG from the callback */
1528/* the callback must use dXSARGS/XSRETURN */
1529static SV *
1530gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1531{
1532 CV *cv = (CV *)newSV (0);
1533
1534 sv_upgrade ((SV *)cv, SVt_PVCV);
1535
1536 CvANON_on (cv);
1537 CvISXSUB_on (cv);
1538 CvXSUB (cv) = xsub;
1539 GENSUB_ARG = arg;
1540
1541 return newRV_noinc ((SV *)cv);
1542}
1543
1505/** Coro ********************************************************************/ 1544/** Coro ********************************************************************/
1506 1545
1507static void 1546INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1547coro_enq (pTHX_ struct coro *coro)
1509{ 1548{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1549 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1511} 1550}
1512 1551
1513static SV * 1552INLINE SV *
1514coro_deq (pTHX) 1553coro_deq (pTHX)
1515{ 1554{
1516 int prio; 1555 int prio;
1517 1556
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1557 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1537 if (coro->flags & CF_READY) 1576 if (coro->flags & CF_READY)
1538 return 0; 1577 return 0;
1539 1578
1540 coro->flags |= CF_READY; 1579 coro->flags |= CF_READY;
1541 1580
1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1581 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1582 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546 1583
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1584 coro_enq (aTHX_ coro);
1548 ++coro_nready; 1585 ++coro_nready;
1549 1586
1550 UNLOCK;
1551
1552 if (sv_hook) 1587 if (sv_hook)
1553 { 1588 {
1554 dSP; 1589 dSP;
1555 1590
1556 ENTER; 1591 ENTER;
1557 SAVETMPS; 1592 SAVETMPS;
1558 1593
1559 PUSHMARK (SP); 1594 PUSHMARK (SP);
1560 PUTBACK; 1595 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD); 1596 call_sv (sv_hook, G_VOID | G_DISCARD);
1562 SPAGAIN;
1563 1597
1564 FREETMPS; 1598 FREETMPS;
1565 LEAVE; 1599 LEAVE;
1566 } 1600 }
1567 1601
… …
1582{ 1616{
1583 SV *prev_sv, *next_sv; 1617 SV *prev_sv, *next_sv;
1584 1618
1585 for (;;) 1619 for (;;)
1586 { 1620 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX); 1621 next_sv = coro_deq (aTHX);
1589 1622
1590 /* nothing to schedule: call the idle handler */ 1623 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv)) 1624 if (expect_false (!next_sv))
1592 { 1625 {
1593 dSP; 1626 dSP;
1594 UNLOCK;
1595 1627
1596 ENTER; 1628 ENTER;
1597 SAVETMPS; 1629 SAVETMPS;
1598 1630
1599 PUSHMARK (SP); 1631 PUSHMARK (SP);
1600 PUTBACK; 1632 PUTBACK;
1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1633 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1602 SPAGAIN;
1603 1634
1604 FREETMPS; 1635 FREETMPS;
1605 LEAVE; 1636 LEAVE;
1606 continue; 1637 continue;
1607 } 1638 }
1608 1639
1609 ta->next = SvSTATE (next_sv); 1640 ta->next = SvSTATE_hv (next_sv);
1610 1641
1611 /* cannot transfer to destroyed coros, skip and look for next */ 1642 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED)) 1643 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 { 1644 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv); 1645 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */ 1646 /* coro_nready has already been taken care of by destroy */
1617 continue; 1647 continue;
1618 } 1648 }
1619 1649
1620 --coro_nready; 1650 --coro_nready;
1621 UNLOCK;
1622 break; 1651 break;
1623 } 1652 }
1624 1653
1625 /* free this only after the transfer */ 1654 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current); 1655 prev_sv = SvRV (coro_current);
1627 ta->prev = SvSTATE (prev_sv); 1656 ta->prev = SvSTATE_hv (prev_sv);
1628 TRANSFER_CHECK (*ta); 1657 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1658 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1630 ta->next->flags &= ~CF_READY; 1659 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1660 SvRV_set (coro_current, next_sv);
1632 1661
1633 LOCK;
1634 free_coro_mortal (aTHX); 1662 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1663 coro_mortal = prev_sv;
1636 UNLOCK;
1637} 1664}
1638 1665
1639INLINE void 1666INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1667prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1668{
… …
1720 else 1747 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1748 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1749 }
1723} 1750}
1724 1751
1725#if 0 1752/*****************************************************************************/
1753/* async pool handler */
1754
1726static int 1755static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1756slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1728{ 1757{
1729 AV *padlist; 1758 HV *hv = (HV *)SvRV (coro_current);
1730 AV *av = (AV *)mg->mg_obj; 1759 struct coro *coro = (struct coro *)frame->data;
1731 1760
1732 abort (); 1761 if (!coro->invoke_cb)
1762 return 1; /* loop till we have invoke */
1763 else
1764 {
1765 int i, len;
1766
1767 hv_store (hv, "desc", sizeof ("desc") - 1,
1768 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1769
1770 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1771
1772 len = av_len (coro->invoke_av);
1773
1774 {
1775 dSP;
1776 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1777 PUTBACK;
1778 }
1779
1780 SvREFCNT_dec (GvAV (PL_defgv));
1781 GvAV (PL_defgv) = coro->invoke_av;
1782 coro->invoke_av = 0;
1783
1784 return 0;
1785 }
1786}
1787
1788static void
1789slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1790{
1791 HV *hv = (HV *)SvRV (coro_current);
1792 struct coro *coro = SvSTATE_hv ((SV *)hv);
1793
1794 if (expect_true (coro->saved_deffh))
1795 {
1796 /* subsequent iteration */
1797 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1798 coro->saved_deffh = 0;
1799
1800 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1801 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1802 {
1803 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1804 coro->invoke_av = newAV ();
1805
1806 frame->prepare = prepare_nop;
1807 }
1808 else
1809 {
1810 av_clear (GvAV (PL_defgv));
1811 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1812
1813 coro->prio = 0;
1814
1815 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1816 api_trace (aTHX_ coro_current, 0);
1817
1818 frame->prepare = prepare_schedule;
1819 av_push (av_async_pool, SvREFCNT_inc (hv));
1820 }
1821 }
1822 else
1823 {
1824 /* first iteration, simply fall through */
1825 frame->prepare = prepare_nop;
1826 }
1827
1828 frame->check = slf_check_pool_handler;
1829 frame->data = (void *)coro;
1830}
1831
1832/*****************************************************************************/
1833/* rouse callback */
1834
1835#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1836
1837static void
1838coro_rouse_callback (pTHX_ CV *cv)
1839{
1840 dXSARGS;
1841 SV *data = (SV *)GENSUB_ARG;
1842
1843 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1844 {
1845 /* first call, set args */
1846 int i;
1847 AV *av = newAV ();
1848 SV *coro = SvRV (data);
1849
1850 SvRV_set (data, (SV *)av);
1851 api_ready (aTHX_ coro);
1852 SvREFCNT_dec (coro);
1853
1854 /* better take a full copy of the arguments */
1855 while (items--)
1856 av_store (av, items, newSVsv (ST (items)));
1857 }
1858
1859 XSRETURN_EMPTY;
1860}
1861
1862static int
1863slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1864{
1865 SV *data = (SV *)frame->data;
1866
1867 if (CORO_THROW)
1868 return 0;
1869
1870 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1871 return 1;
1872
1873 /* now push all results on the stack */
1874 {
1875 dSP;
1876 AV *av = (AV *)SvRV (data);
1877 int i;
1878
1879 EXTEND (SP, AvFILLp (av) + 1);
1880 for (i = 0; i <= AvFILLp (av); ++i)
1881 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1882
1883 /* we have stolen the elements, so ste length to zero and free */
1884 AvFILLp (av) = -1;
1885 av_undef (av);
1886
1887 PUTBACK;
1888 }
1733 1889
1734 return 0; 1890 return 0;
1735} 1891}
1736 1892
1737static MGVTBL coro_gensub_vtbl = { 1893static void
1738 0, 0, 0, 0, 1894slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 1895{
1740}; 1896 SV *cb;
1741#endif 1897
1898 if (items)
1899 cb = arg [0];
1900 else
1901 {
1902 struct coro *coro = SvSTATE_current;
1903
1904 if (!coro->rouse_cb)
1905 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1906
1907 cb = sv_2mortal (coro->rouse_cb);
1908 coro->rouse_cb = 0;
1909 }
1910
1911 if (!SvROK (cb)
1912 || SvTYPE (SvRV (cb)) != SVt_PVCV
1913 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1914 croak ("Coro::rouse_wait called with illegal callback argument,");
1915
1916 {
1917 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1918 SV *data = (SV *)GENSUB_ARG;
1919
1920 frame->data = (void *)data;
1921 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1922 frame->check = slf_check_rouse_wait;
1923 }
1924}
1925
1926static SV *
1927coro_new_rouse_cb (pTHX)
1928{
1929 HV *hv = (HV *)SvRV (coro_current);
1930 struct coro *coro = SvSTATE_hv (hv);
1931 SV *data = newRV_inc ((SV *)hv);
1932 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1933
1934 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1935 SvREFCNT_dec (data); /* magicext increases the refcount */
1936
1937 SvREFCNT_dec (coro->rouse_cb);
1938 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1939
1940 return cb;
1941}
1942
1943/*****************************************************************************/
1944/* schedule-like-function opcode (SLF) */
1945
1946static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1947static const CV *slf_cv;
1948static SV **slf_argv;
1949static int slf_argc, slf_arga; /* count, allocated */
1950static I32 slf_ax; /* top of stack, for restore */
1951
1952/* this restores the stack in the case we patched the entersub, to */
1953/* recreate the stack frame as perl will on following calls */
1954/* since entersub cleared the stack */
1955static OP *
1956pp_restore (pTHX)
1957{
1958 int i;
1959 SV **SP = PL_stack_base + slf_ax;
1960
1961 PUSHMARK (SP);
1962
1963 EXTEND (SP, slf_argc + 1);
1964
1965 for (i = 0; i < slf_argc; ++i)
1966 PUSHs (sv_2mortal (slf_argv [i]));
1967
1968 PUSHs ((SV *)CvGV (slf_cv));
1969
1970 RETURNOP (slf_restore.op_first);
1971}
1972
1973static void
1974slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1975{
1976 SV **arg = (SV **)slf_frame.data;
1977
1978 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1979}
1980
1981static void
1982slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1983{
1984 if (items != 2)
1985 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1986
1987 frame->prepare = slf_prepare_transfer;
1988 frame->check = slf_check_nop;
1989 frame->data = (void *)arg; /* let's hope it will stay valid */
1990}
1991
1992static void
1993slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1994{
1995 frame->prepare = prepare_schedule;
1996 frame->check = slf_check_nop;
1997}
1998
1999static void
2000slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2001{
2002 frame->prepare = prepare_cede;
2003 frame->check = slf_check_nop;
2004}
2005
2006static void
2007slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2008{
2009 frame->prepare = prepare_cede_notself;
2010 frame->check = slf_check_nop;
2011}
2012
2013/*
2014 * these not obviously related functions are all rolled into one
2015 * function to increase chances that they all will call transfer with the same
2016 * stack offset
2017 * SLF stands for "schedule-like-function".
2018 */
2019static OP *
2020pp_slf (pTHX)
2021{
2022 I32 checkmark; /* mark SP to see how many elements check has pushed */
2023
2024 /* set up the slf frame, unless it has already been set-up */
2025 /* the latter happens when a new coro has been started */
2026 /* or when a new cctx was attached to an existing coroutine */
2027 if (expect_true (!slf_frame.prepare))
2028 {
2029 /* first iteration */
2030 dSP;
2031 SV **arg = PL_stack_base + TOPMARK + 1;
2032 int items = SP - arg; /* args without function object */
2033 SV *gv = *sp;
2034
2035 /* do a quick consistency check on the "function" object, and if it isn't */
2036 /* for us, divert to the real entersub */
2037 if (SvTYPE (gv) != SVt_PVGV
2038 || !GvCV (gv)
2039 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2040 return PL_ppaddr[OP_ENTERSUB](aTHX);
2041
2042 if (!(PL_op->op_flags & OPf_STACKED))
2043 {
2044 /* ampersand-form of call, use @_ instead of stack */
2045 AV *av = GvAV (PL_defgv);
2046 arg = AvARRAY (av);
2047 items = AvFILLp (av) + 1;
2048 }
2049
2050 /* now call the init function, which needs to set up slf_frame */
2051 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2052 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2053
2054 /* pop args */
2055 SP = PL_stack_base + POPMARK;
2056
2057 PUTBACK;
2058 }
2059
2060 /* now that we have a slf_frame, interpret it! */
2061 /* we use a callback system not to make the code needlessly */
2062 /* complicated, but so we can run multiple perl coros from one cctx */
2063
2064 do
2065 {
2066 struct coro_transfer_args ta;
2067
2068 slf_frame.prepare (aTHX_ &ta);
2069 TRANSFER (ta, 0);
2070
2071 checkmark = PL_stack_sp - PL_stack_base;
2072 }
2073 while (slf_frame.check (aTHX_ &slf_frame));
2074
2075 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2076
2077 /* exception handling */
2078 if (expect_false (CORO_THROW))
2079 {
2080 SV *exception = sv_2mortal (CORO_THROW);
2081
2082 CORO_THROW = 0;
2083 sv_setsv (ERRSV, exception);
2084 croak (0);
2085 }
2086
2087 /* return value handling - mostly like entersub */
2088 /* make sure we put something on the stack in scalar context */
2089 if (GIMME_V == G_SCALAR)
2090 {
2091 dSP;
2092 SV **bot = PL_stack_base + checkmark;
2093
2094 if (sp == bot) /* too few, push undef */
2095 bot [1] = &PL_sv_undef;
2096 else if (sp != bot + 1) /* too many, take last one */
2097 bot [1] = *sp;
2098
2099 SP = bot + 1;
2100
2101 PUTBACK;
2102 }
2103
2104 return NORMAL;
2105}
2106
2107static void
2108api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2109{
2110 int i;
2111 SV **arg = PL_stack_base + ax;
2112 int items = PL_stack_sp - arg + 1;
2113
2114 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2115
2116 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2117 && PL_op->op_ppaddr != pp_slf)
2118 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2119
2120 CvFLAGS (cv) |= CVf_SLF;
2121 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2122 slf_cv = cv;
2123
2124 /* we patch the op, and then re-run the whole call */
2125 /* we have to put the same argument on the stack for this to work */
2126 /* and this will be done by pp_restore */
2127 slf_restore.op_next = (OP *)&slf_restore;
2128 slf_restore.op_type = OP_CUSTOM;
2129 slf_restore.op_ppaddr = pp_restore;
2130 slf_restore.op_first = PL_op;
2131
2132 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2133
2134 if (PL_op->op_flags & OPf_STACKED)
2135 {
2136 if (items > slf_arga)
2137 {
2138 slf_arga = items;
2139 free (slf_argv);
2140 slf_argv = malloc (slf_arga * sizeof (SV *));
2141 }
2142
2143 slf_argc = items;
2144
2145 for (i = 0; i < items; ++i)
2146 slf_argv [i] = SvREFCNT_inc (arg [i]);
2147 }
2148 else
2149 slf_argc = 0;
2150
2151 PL_op->op_ppaddr = pp_slf;
2152 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2153
2154 PL_op = (OP *)&slf_restore;
2155}
1742 2156
1743/*****************************************************************************/ 2157/*****************************************************************************/
1744/* PerlIO::cede */ 2158/* PerlIO::cede */
1745 2159
1746typedef struct 2160typedef struct
… …
1814 PerlIOBuf_get_cnt, 2228 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 2229 PerlIOBuf_set_ptrcnt,
1816}; 2230};
1817 2231
1818/*****************************************************************************/ 2232/*****************************************************************************/
2233/* Coro::Semaphore & Coro::Signal */
1819 2234
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 * 2235static SV *
1831pp_restore (pTHX) 2236coro_waitarray_new (pTHX_ int count)
1832{ 2237{
1833 dSP; 2238 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2239 AV *av = newAV ();
2240 SV **ary;
1834 2241
1835 PUSHMARK (SP); 2242 /* unfortunately, building manually saves memory */
2243 Newx (ary, 2, SV *);
2244 AvALLOC (av) = ary;
2245 /*AvARRAY (av) = ary;*/
2246 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2247 AvMAX (av) = 1;
2248 AvFILLp (av) = 0;
2249 ary [0] = newSViv (count);
1836 2250
1837 EXTEND (SP, 3); 2251 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} 2252}
1845 2253
1846static void 2254/* 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 2255
1852static void 2256static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2257coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2258{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2259 SV *count_sv = AvARRAY (av)[0];
2260 IV count = SvIVX (count_sv);
1856 2261
1857 frame->prepare = slf_prepare_set_stacklevel; 2262 count += adjust;
1858 frame->check = slf_check_nop; 2263 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2264
1862static void 2265 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2266 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 { 2267 {
1921 /* first iteration */ 2268 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 2269
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2270 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2271 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2272 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2273 cb = av_shift (av);
1931 2274
1932 /* pop args */ 2275 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2276 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2277 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2278 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2279 }
1942 2280 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 { 2281 {
1973 if (sp == bot) 2282 dSP;
1974 XPUSHs (&PL_sv_undef); 2283 PUSHMARK (SP);
1975 2284 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1976 SP = bot + 1; 2285 PUTBACK;
2286 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1977 } 2287 }
1978 2288
1979 PUTBACK; 2289 SvREFCNT_dec (cb);
1980 } 2290 }
1981
1982 return NORMAL;
1983} 2291}
1984 2292
1985static void 2293static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2294coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1987{ 2295{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2296 /* call $sem->adjust (0) to possibly wake up some other waiters */
1989 2297 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} 2298}
2017
2018/*****************************************************************************/
2019 2299
2020static int 2300static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2301slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2022{ 2302{
2023 AV *av = (AV *)frame->data; 2303 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0]; 2304 SV *count_sv = AvARRAY (av)[0];
2025 2305
2306 /* if we are about to throw, don't actually acquire the lock, just throw */
2307 if (CORO_THROW)
2308 return 0;
2026 if (SvIVX (count_sv) > 0) 2309 else if (SvIVX (count_sv) > 0)
2027 { 2310 {
2311 SvSTATE_current->on_destroy = 0;
2312
2313 if (acquire)
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2314 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2315 else
2316 coro_semaphore_adjust (aTHX_ av, 0);
2317
2029 return 0; 2318 return 0;
2030 } 2319 }
2031 else 2320 else
2032 { 2321 {
2033 int i; 2322 int i;
… …
2042 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2331 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2043 return 1; 2332 return 1;
2044 } 2333 }
2045} 2334}
2046 2335
2047static void 2336static int
2337slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2338{
2339 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2340}
2341
2342static int
2343slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2344{
2345 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2346}
2347
2348static void
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2349slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{ 2350{
2050 AV *av = (AV *)SvRV (arg [0]); 2351 AV *av = (AV *)SvRV (arg [0]);
2051 2352
2052 if (SvIVX (AvARRAY (av)[0]) > 0) 2353 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 { 2354 {
… …
2058 { 2359 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2360 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 2361
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2362 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule; 2363 frame->prepare = prepare_schedule;
2063 }
2064 2364
2365 /* to avoid race conditions when a woken-up coro gets terminated */
2366 /* we arrange for a temporary on_destroy that calls adjust (0) */
2367 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2368 }
2369}
2370
2371static void
2372slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2373{
2374 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 2375 frame->check = slf_check_semaphore_down;
2066
2067} 2376}
2377
2378static void
2379slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2380{
2381 if (items >= 2)
2382 {
2383 /* callback form */
2384 AV *av = (AV *)SvRV (arg [0]);
2385 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2386
2387 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2388
2389 if (SvIVX (AvARRAY (av)[0]) > 0)
2390 coro_semaphore_adjust (aTHX_ av, 0);
2391
2392 frame->prepare = prepare_nop;
2393 frame->check = slf_check_nop;
2394 }
2395 else
2396 {
2397 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2398 frame->check = slf_check_semaphore_wait;
2399 }
2400}
2401
2402/* signal */
2403
2404static void
2405coro_signal_wake (pTHX_ AV *av, int count)
2406{
2407 SvIVX (AvARRAY (av)[0]) = 0;
2408
2409 /* now signal count waiters */
2410 while (count > 0 && AvFILLp (av) > 0)
2411 {
2412 SV *cb;
2413
2414 /* swap first two elements so we can shift a waiter */
2415 cb = AvARRAY (av)[0];
2416 AvARRAY (av)[0] = AvARRAY (av)[1];
2417 AvARRAY (av)[1] = cb;
2418
2419 cb = av_shift (av);
2420
2421 api_ready (aTHX_ cb);
2422 sv_setiv (cb, 0); /* signal waiter */
2423 SvREFCNT_dec (cb);
2424
2425 --count;
2426 }
2427}
2428
2429static int
2430slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2431{
2432 /* if we are about to throw, also stop waiting */
2433 return SvROK ((SV *)frame->data) && !CORO_THROW;
2434}
2435
2436static void
2437slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2438{
2439 AV *av = (AV *)SvRV (arg [0]);
2440
2441 if (SvIVX (AvARRAY (av)[0]))
2442 {
2443 SvIVX (AvARRAY (av)[0]) = 0;
2444 frame->prepare = prepare_nop;
2445 frame->check = slf_check_nop;
2446 }
2447 else
2448 {
2449 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2450
2451 av_push (av, waiter);
2452
2453 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2454 frame->prepare = prepare_schedule;
2455 frame->check = slf_check_signal_wait;
2456 }
2457}
2458
2459/*****************************************************************************/
2460/* Coro::AIO */
2461
2462#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2463
2464/* helper storage struct */
2465struct io_state
2466{
2467 int errorno;
2468 I32 laststype; /* U16 in 5.10.0 */
2469 int laststatval;
2470 Stat_t statcache;
2471};
2472
2473static void
2474coro_aio_callback (pTHX_ CV *cv)
2475{
2476 dXSARGS;
2477 AV *state = (AV *)GENSUB_ARG;
2478 SV *coro = av_pop (state);
2479 SV *data_sv = newSV (sizeof (struct io_state));
2480
2481 av_extend (state, items - 1);
2482
2483 sv_upgrade (data_sv, SVt_PV);
2484 SvCUR_set (data_sv, sizeof (struct io_state));
2485 SvPOK_only (data_sv);
2486
2487 {
2488 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2489
2490 data->errorno = errno;
2491 data->laststype = PL_laststype;
2492 data->laststatval = PL_laststatval;
2493 data->statcache = PL_statcache;
2494 }
2495
2496 /* now build the result vector out of all the parameters and the data_sv */
2497 {
2498 int i;
2499
2500 for (i = 0; i < items; ++i)
2501 av_push (state, SvREFCNT_inc_NN (ST (i)));
2502 }
2503
2504 av_push (state, data_sv);
2505
2506 api_ready (aTHX_ coro);
2507 SvREFCNT_dec (coro);
2508 SvREFCNT_dec ((AV *)state);
2509}
2510
2511static int
2512slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2513{
2514 AV *state = (AV *)frame->data;
2515
2516 /* if we are about to throw, return early */
2517 /* this does not cancel the aio request, but at least */
2518 /* it quickly returns */
2519 if (CORO_THROW)
2520 return 0;
2521
2522 /* one element that is an RV? repeat! */
2523 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2524 return 1;
2525
2526 /* restore status */
2527 {
2528 SV *data_sv = av_pop (state);
2529 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2530
2531 errno = data->errorno;
2532 PL_laststype = data->laststype;
2533 PL_laststatval = data->laststatval;
2534 PL_statcache = data->statcache;
2535
2536 SvREFCNT_dec (data_sv);
2537 }
2538
2539 /* push result values */
2540 {
2541 dSP;
2542 int i;
2543
2544 EXTEND (SP, AvFILLp (state) + 1);
2545 for (i = 0; i <= AvFILLp (state); ++i)
2546 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2547
2548 PUTBACK;
2549 }
2550
2551 return 0;
2552}
2553
2554static void
2555slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2556{
2557 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2558 SV *coro_hv = SvRV (coro_current);
2559 struct coro *coro = SvSTATE_hv (coro_hv);
2560
2561 /* put our coroutine id on the state arg */
2562 av_push (state, SvREFCNT_inc_NN (coro_hv));
2563
2564 /* first see whether we have a non-zero priority and set it as AIO prio */
2565 if (coro->prio)
2566 {
2567 dSP;
2568
2569 static SV *prio_cv;
2570 static SV *prio_sv;
2571
2572 if (expect_false (!prio_cv))
2573 {
2574 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2575 prio_sv = newSViv (0);
2576 }
2577
2578 PUSHMARK (SP);
2579 sv_setiv (prio_sv, coro->prio);
2580 XPUSHs (prio_sv);
2581
2582 PUTBACK;
2583 call_sv (prio_cv, G_VOID | G_DISCARD);
2584 }
2585
2586 /* now call the original request */
2587 {
2588 dSP;
2589 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2590 int i;
2591
2592 PUSHMARK (SP);
2593
2594 /* first push all args to the stack */
2595 EXTEND (SP, items + 1);
2596
2597 for (i = 0; i < items; ++i)
2598 PUSHs (arg [i]);
2599
2600 /* now push the callback closure */
2601 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2602
2603 /* now call the AIO function - we assume our request is uncancelable */
2604 PUTBACK;
2605 call_sv ((SV *)req, G_VOID | G_DISCARD);
2606 }
2607
2608 /* now that the requets is going, we loop toll we have a result */
2609 frame->data = (void *)state;
2610 frame->prepare = prepare_schedule;
2611 frame->check = slf_check_aio_req;
2612}
2613
2614static void
2615coro_aio_req_xs (pTHX_ CV *cv)
2616{
2617 dXSARGS;
2618
2619 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2620
2621 XSRETURN_EMPTY;
2622}
2623
2624/*****************************************************************************/
2068 2625
2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2626MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2070 2627
2071PROTOTYPES: DISABLE 2628PROTOTYPES: DISABLE
2072 2629
2073BOOT: 2630BOOT:
2074{ 2631{
2075#ifdef USE_ITHREADS 2632#ifdef USE_ITHREADS
2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD 2633# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT; 2634 coro_thx = PERL_GET_CONTEXT;
2079# endif 2635# endif
2080#endif 2636#endif
2081 BOOT_PAGESIZE; 2637 BOOT_PAGESIZE;
… …
2101 main_mainstack = PL_mainstack; 2657 main_mainstack = PL_mainstack;
2102 main_top_env = PL_top_env; 2658 main_top_env = PL_top_env;
2103 2659
2104 while (main_top_env->je_prev) 2660 while (main_top_env->je_prev)
2105 main_top_env = main_top_env->je_prev; 2661 main_top_env = main_top_env->je_prev;
2662
2663 {
2664 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2665
2666 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2667 hv_store_ent (PL_custom_op_names, slf,
2668 newSVpv ("coro_slf", 0), 0);
2669
2670 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2671 hv_store_ent (PL_custom_op_descs, slf,
2672 newSVpv ("coro schedule like function", 0), 0);
2673 }
2106 2674
2107 coroapi.ver = CORO_API_VERSION; 2675 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION; 2676 coroapi.rev = CORO_API_REVISION;
2109 2677
2110 coroapi.transfer = api_transfer; 2678 coroapi.transfer = api_transfer;
… …
2128 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2696 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2129} 2697}
2130 2698
2131SV * 2699SV *
2132new (char *klass, ...) 2700new (char *klass, ...)
2701 ALIAS:
2702 Coro::new = 1
2133 CODE: 2703 CODE:
2134{ 2704{
2135 struct coro *coro; 2705 struct coro *coro;
2136 MAGIC *mg; 2706 MAGIC *mg;
2137 HV *hv; 2707 HV *hv;
2708 CV *cb;
2138 int i; 2709 int i;
2710
2711 if (items > 1)
2712 {
2713 cb = coro_sv_2cv (aTHX_ ST (1));
2714
2715 if (!ix)
2716 {
2717 if (CvISXSUB (cb))
2718 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2719
2720 if (!CvROOT (cb))
2721 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2722 }
2723 }
2139 2724
2140 Newz (0, coro, 1, struct coro); 2725 Newz (0, coro, 1, struct coro);
2141 coro->args = newAV (); 2726 coro->args = newAV ();
2142 coro->flags = CF_NEW; 2727 coro->flags = CF_NEW;
2143 2728
… …
2148 coro->hv = hv = newHV (); 2733 coro->hv = hv = newHV ();
2149 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2734 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2150 mg->mg_flags |= MGf_DUP; 2735 mg->mg_flags |= MGf_DUP;
2151 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2736 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2152 2737
2738 if (items > 1)
2739 {
2153 av_extend (coro->args, items - 1); 2740 av_extend (coro->args, items - 1 + ix - 1);
2741
2742 if (ix)
2743 {
2744 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2745 cb = cv_coro_run;
2746 }
2747
2748 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2749
2154 for (i = 1; i < items; i++) 2750 for (i = 2; i < items; i++)
2155 av_push (coro->args, newSVsv (ST (i))); 2751 av_push (coro->args, newSVsv (ST (i)));
2752 }
2156} 2753}
2157 OUTPUT: 2754 OUTPUT:
2158 RETVAL 2755 RETVAL
2159
2160void
2161_set_stacklevel (...)
2162 CODE:
2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2164 2756
2165void 2757void
2166transfer (...) 2758transfer (...)
2167 PROTOTYPE: $$ 2759 PROTOTYPE: $$
2168 CODE: 2760 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2761 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2170 2762
2171bool 2763bool
2172_destroy (SV *coro_sv) 2764_destroy (SV *coro_sv)
2173 CODE: 2765 CODE:
2174 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2766 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2292 2884
2293void 2885void
2294throw (Coro::State self, SV *throw = &PL_sv_undef) 2886throw (Coro::State self, SV *throw = &PL_sv_undef)
2295 PROTOTYPE: $;$ 2887 PROTOTYPE: $;$
2296 CODE: 2888 CODE:
2889{
2890 struct coro *current = SvSTATE_current;
2891 SV **throwp = self == current ? &CORO_THROW : &self->except;
2297 SvREFCNT_dec (self->throw); 2892 SvREFCNT_dec (*throwp);
2298 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2893 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2894}
2299 2895
2300void 2896void
2301api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2897api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2302 PROTOTYPE: $;$ 2898 PROTOTYPE: $;$
2303 C_ARGS: aTHX_ coro, flags 2899 C_ARGS: aTHX_ coro, flags
… …
2334 2930
2335void 2931void
2336force_cctx () 2932force_cctx ()
2337 PROTOTYPE: 2933 PROTOTYPE:
2338 CODE: 2934 CODE:
2339 struct coro *coro = SvSTATE (coro_current);
2340 coro->cctx->idle_sp = 0; 2935 SvSTATE_current->cctx->idle_sp = 0;
2341 2936
2342void 2937void
2343swap_defsv (Coro::State self) 2938swap_defsv (Coro::State self)
2344 PROTOTYPE: $ 2939 PROTOTYPE: $
2345 ALIAS: 2940 ALIAS:
… …
2353 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2948 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2354 2949
2355 SV *tmp = *src; *src = *dst; *dst = tmp; 2950 SV *tmp = *src; *src = *dst; *dst = tmp;
2356 } 2951 }
2357 2952
2953
2358MODULE = Coro::State PACKAGE = Coro 2954MODULE = Coro::State PACKAGE = Coro
2359 2955
2360BOOT: 2956BOOT:
2361{ 2957{
2362 int i; 2958 int i;
2363 2959
2364 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2960 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2365 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2961 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2366 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2962 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2367 2963 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2964 cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);
2368 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2965 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2369 SvREADONLY_on (coro_current); 2966 SvREADONLY_on (coro_current);
2967
2968 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2969 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2970 cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler);
2971 cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new);
2370 2972
2371 coro_stash = gv_stashpv ("Coro", TRUE); 2973 coro_stash = gv_stashpv ("Coro", TRUE);
2372 2974
2373 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2975 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2374 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2976 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2389 coroapi.ready = api_ready; 2991 coroapi.ready = api_ready;
2390 coroapi.is_ready = api_is_ready; 2992 coroapi.is_ready = api_is_ready;
2391 coroapi.nready = coro_nready; 2993 coroapi.nready = coro_nready;
2392 coroapi.current = coro_current; 2994 coroapi.current = coro_current;
2393 2995
2394 GCoroAPI = &coroapi; 2996 /*GCoroAPI = &coroapi;*/
2395 sv_setiv (sv, (IV)&coroapi); 2997 sv_setiv (sv, (IV)&coroapi);
2396 SvREADONLY_on (sv); 2998 SvREADONLY_on (sv);
2397 } 2999 }
2398} 3000}
2399 3001
2400void 3002void
2401schedule (...) 3003schedule (...)
2402 CODE: 3004 CODE:
2403 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3005 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2404 3006
2405void 3007void
2406cede (...) 3008cede (...)
2407 CODE: 3009 CODE:
2408 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3010 CORO_EXECUTE_SLF_XS (slf_init_cede);
2409 3011
2410void 3012void
2411cede_notself (...) 3013cede_notself (...)
2412 CODE: 3014 CODE:
2413 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3015 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2414 3016
2415void 3017void
2416_set_current (SV *current) 3018_set_current (SV *current)
2417 PROTOTYPE: $ 3019 PROTOTYPE: $
2418 CODE: 3020 CODE:
… …
2421 3023
2422void 3024void
2423_set_readyhook (SV *hook) 3025_set_readyhook (SV *hook)
2424 PROTOTYPE: $ 3026 PROTOTYPE: $
2425 CODE: 3027 CODE:
2426 LOCK;
2427 SvREFCNT_dec (coro_readyhook); 3028 SvREFCNT_dec (coro_readyhook);
2428 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3029 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2429 UNLOCK;
2430 3030
2431int 3031int
2432prio (Coro::State coro, int newprio = 0) 3032prio (Coro::State coro, int newprio = 0)
2433 PROTOTYPE: $;$ 3033 PROTOTYPE: $;$
2434 ALIAS: 3034 ALIAS:
… …
2465 CODE: 3065 CODE:
2466 RETVAL = coro_nready; 3066 RETVAL = coro_nready;
2467 OUTPUT: 3067 OUTPUT:
2468 RETVAL 3068 RETVAL
2469 3069
2470# for async_pool speedup
2471void 3070void
2472_pool_1 (SV *cb) 3071_pool_handler (...)
2473 CODE: 3072 CODE:
2474{ 3073 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 3074
2482 if (!invoke) 3075void
3076async_pool (SV *cv, ...)
3077 PROTOTYPE: &@
3078 PPCODE:
3079{
3080 HV *hv = (HV *)av_pop (av_async_pool);
3081 AV *av = newAV ();
3082 SV *cb = ST (0);
3083 int i;
3084
3085 av_extend (av, items - 2);
3086 for (i = 1; i < items; ++i)
3087 av_push (av, SvREFCNT_inc_NN (ST (i)));
3088
3089 if ((SV *)hv == &PL_sv_undef)
2483 { 3090 {
2484 SV *old = PL_diehook; 3091 PUSHMARK (SP);
2485 PL_diehook = 0; 3092 EXTEND (SP, 2);
2486 SvREFCNT_dec (old); 3093 PUSHs (sv_Coro);
2487 croak ("\3async_pool terminate\2\n"); 3094 PUSHs ((SV *)cv_pool_handler);
3095 PUTBACK;
3096 call_sv (cv_coro_new, G_SCALAR);
3097 SPAGAIN;
3098
3099 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2488 } 3100 }
2489 3101
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 { 3102 {
2503 av_fill (defav, len - 1); 3103 struct coro *coro = SvSTATE_hv (hv);
2504 for (i = 0; i < len; ++i) 3104
2505 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3105 assert (!coro->invoke_cb);
3106 assert (!coro->invoke_av);
3107 coro->invoke_cb = SvREFCNT_inc (cb);
3108 coro->invoke_av = av;
2506 } 3109 }
2507}
2508 3110
2509void 3111 api_ready ((SV *)hv);
2510_pool_2 (SV *cb) 3112
3113 if (GIMME_V != G_VOID)
3114 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3115 else
3116 SvREFCNT_dec (hv);
3117}
3118
3119SV *
3120rouse_cb ()
3121 PROTOTYPE:
2511 CODE: 3122 CODE:
2512{ 3123 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: 3124 OUTPUT:
2585 RETVAL 3125 RETVAL
2586 3126
2587#endif
2588
2589
2590MODULE = Coro::State PACKAGE = Coro::AIO
2591
2592void 3127void
2593_get_state (SV *self) 3128rouse_wait (...)
2594 PROTOTYPE: $ 3129 PROTOTYPE: ;$
2595 PPCODE: 3130 PPCODE:
2596{ 3131 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 3132
2671 3133
2672MODULE = Coro::State PACKAGE = PerlIO::cede 3134MODULE = Coro::State PACKAGE = PerlIO::cede
2673 3135
2674BOOT: 3136BOOT:
2675 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3137 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2676 3138
3139
2677MODULE = Coro::State PACKAGE = Coro::Semaphore 3140MODULE = Coro::State PACKAGE = Coro::Semaphore
2678 3141
2679SV * 3142SV *
2680new (SV *klass, SV *count_ = 0) 3143new (SV *klass, SV *count = 0)
2681 CODE: 3144 CODE:
2682{ 3145 RETVAL = sv_bless (
2683 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3146 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2684 AV *av = newAV (); 3147 GvSTASH (CvGV (cv))
2685 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3148 );
2686 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3149 OUTPUT:
2687} 3150 RETVAL
3151
3152# helper for Coro::Channel
3153SV *
3154_alloc (int count)
3155 CODE:
3156 RETVAL = coro_waitarray_new (aTHX_ count);
2688 OUTPUT: 3157 OUTPUT:
2689 RETVAL 3158 RETVAL
2690 3159
2691SV * 3160SV *
2692count (SV *self) 3161count (SV *self)
… …
2698void 3167void
2699up (SV *self, int adjust = 1) 3168up (SV *self, int adjust = 1)
2700 ALIAS: 3169 ALIAS:
2701 adjust = 1 3170 adjust = 1
2702 CODE: 3171 CODE:
2703{ 3172 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 3173
2730void 3174void
2731down (SV *self) 3175down (...)
2732 CODE: 3176 CODE:
2733 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3177 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3178
3179void
3180wait (...)
3181 CODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2734 3183
2735void 3184void
2736try (SV *self) 3185try (SV *self)
2737 PPCODE: 3186 PPCODE:
2738{ 3187{
… …
2750 XSRETURN_NO; 3199 XSRETURN_NO;
2751} 3200}
2752 3201
2753void 3202void
2754waiters (SV *self) 3203waiters (SV *self)
2755 CODE: 3204 PPCODE:
2756{ 3205{
2757 AV *av = (AV *)SvRV (self); 3206 AV *av = (AV *)SvRV (self);
3207 int wcount = AvFILLp (av) + 1 - 1;
2758 3208
2759 if (GIMME_V == G_SCALAR) 3209 if (GIMME_V == G_SCALAR)
2760 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3210 XPUSHs (sv_2mortal (newSViv (wcount)));
2761 else 3211 else
2762 { 3212 {
2763 int i; 3213 int i;
2764 EXTEND (SP, AvFILLp (av) + 1 - 1); 3214 EXTEND (SP, wcount);
2765 for (i = 1; i <= AvFILLp (av); ++i) 3215 for (i = 1; i <= wcount; ++i)
2766 PUSHs (newSVsv (AvARRAY (av)[i])); 3216 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2767 } 3217 }
2768} 3218}
2769 3219
3220MODULE = Coro::State PACKAGE = Coro::Signal
3221
3222SV *
3223new (SV *klass)
3224 CODE:
3225 RETVAL = sv_bless (
3226 coro_waitarray_new (aTHX_ 0),
3227 GvSTASH (CvGV (cv))
3228 );
3229 OUTPUT:
3230 RETVAL
3231
3232void
3233wait (...)
3234 CODE:
3235 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3236
3237void
3238broadcast (SV *self)
3239 CODE:
3240{
3241 AV *av = (AV *)SvRV (self);
3242 coro_signal_wake (aTHX_ av, AvFILLp (av));
3243}
3244
3245void
3246send (SV *self)
3247 CODE:
3248{
3249 AV *av = (AV *)SvRV (self);
3250
3251 if (AvFILLp (av))
3252 coro_signal_wake (aTHX_ av, 1);
3253 else
3254 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3255}
3256
3257IV
3258awaited (SV *self)
3259 CODE:
3260 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3261 OUTPUT:
3262 RETVAL
3263
3264
3265MODULE = Coro::State PACKAGE = Coro::AnyEvent
3266
3267BOOT:
3268 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3269
3270void
3271_schedule (...)
3272 CODE:
3273{
3274 static int incede;
3275
3276 api_cede_notself (aTHX);
3277
3278 ++incede;
3279 while (coro_nready >= incede && api_cede (aTHX))
3280 ;
3281
3282 sv_setsv (sv_activity, &PL_sv_undef);
3283 if (coro_nready >= incede)
3284 {
3285 PUSHMARK (SP);
3286 PUTBACK;
3287 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3288 }
3289
3290 --incede;
3291}
3292
3293
3294MODULE = Coro::State PACKAGE = Coro::AIO
3295
3296void
3297_register (char *target, char *proto, SV *req)
3298 CODE:
3299{
3300 CV *req_cv = coro_sv_2cv (aTHX_ req);
3301 /* newXSproto doesn't return the CV on 5.8 */
3302 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3303 sv_setpv ((SV *)slf_cv, proto);
3304 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3305}
3306

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