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Comparing Coro/Coro/State.xs (file contents):
Revision 1.280 by root, Sun Nov 16 09:43:18 2008 UTC vs.
Revision 1.320 by root, Fri Nov 21 07:29:04 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# if CORO_PTHREAD 156# if CORO_PTHREAD
148static void *coro_thx; 157static void *coro_thx;
149# endif 158# endif
150#endif 159#endif
151 160
152/* helper storage struct for Coro::AIO */
153struct io_state
154{
155 AV *res;
156 int errorno;
157 I32 laststype; /* U16 in 5.10.0 */
158 int laststatval;
159 Stat_t statcache;
160};
161
162static double (*nvtime)(); /* so why doesn't it take void? */ 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);
163 166
164static U32 cctx_gen; 167static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 171static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next; 174
175static AV *av_destroy; /* destruction queue */
176static SV *sv_manager; /* the manager coro */
172 177
173static GV *irsgv; /* $/ */ 178static GV *irsgv; /* $/ */
174static GV *stdoutgv; /* *STDOUT */ 179static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook; 180static SV *rv_diehook;
176static SV *rv_warnhook; 181static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */ 182static HV *hv_sig; /* %SIG */
178 183
179/* async_pool helper stuff */ 184/* async_pool helper stuff */
180static SV *sv_pool_rss; 185static SV *sv_pool_rss;
181static SV *sv_pool_size; 186static SV *sv_pool_size;
187static SV *sv_async_pool_idle; /* description string */
182static AV *av_async_pool; 188static AV *av_async_pool; /* idle pool */
189static SV *sv_Coro; /* class string */
190static CV *cv_pool_handler;
191static CV *cv_coro_state_new;
183 192
184/* Coro::AnyEvent */ 193/* Coro::AnyEvent */
185static SV *sv_activity; 194static SV *sv_activity;
186 195
187static struct coro_cctx *cctx_first; 196static struct coro_cctx *cctx_first;
… …
242/* this is a structure representing a perl-level coroutine */ 251/* this is a structure representing a perl-level coroutine */
243struct coro { 252struct coro {
244 /* the C coroutine allocated to this perl coroutine, if any */ 253 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 254 coro_cctx *cctx;
246 255
247 /* process data */ 256 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 257 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 258 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 259 perl_slots *slot; /* basically the saved sp */
251 260
261 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 262 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */ 263 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 264 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 265 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro); 266 void (*on_destroy)(pTHX_ struct coro *coro);
257 267
258 /* statistics */ 268 /* statistics */
259 int usecount; /* number of transfers to this coro */ 269 int usecount; /* number of transfers to this coro */
260 270
261 /* coro process data */ 271 /* coro process data */
262 int prio; 272 int prio;
263 SV *throw; /* exception to be thrown */ 273 SV *except; /* exception to be thrown */
274 SV *rouse_cb;
264 275
265 /* async_pool */ 276 /* async_pool */
266 SV *saved_deffh; 277 SV *saved_deffh;
278 SV *invoke_cb;
279 AV *invoke_av;
267 280
268 /* linked list */ 281 /* linked list */
269 struct coro *next, *prev; 282 struct coro *next, *prev;
270}; 283};
271 284
272typedef struct coro *Coro__State; 285typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 286typedef struct coro *Coro__State_or_hashref;
274 287
288/* the following variables are effectively part of the perl context */
289/* and get copied between struct coro and these variables */
290/* the mainr easonw e don't support windows process emulation */
275static struct CoroSLF slf_frame; /* the current slf frame */ 291static struct CoroSLF slf_frame; /* the current slf frame */
276 292
277/** Coro ********************************************************************/ 293/** Coro ********************************************************************/
278 294
279#define PRIO_MAX 3 295#define PRIO_MAX 3
… …
285 301
286/* for Coro.pm */ 302/* for Coro.pm */
287static SV *coro_current; 303static SV *coro_current;
288static SV *coro_readyhook; 304static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 305static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
306static CV *cv_coro_run, *cv_coro_terminate;
290static struct coro *coro_first; 307static struct coro *coro_first;
291#define coro_nready coroapi.nready 308#define coro_nready coroapi.nready
292 309
293/** lowlevel stuff **********************************************************/ 310/** lowlevel stuff **********************************************************/
294 311
… …
318#if PERL_VERSION_ATLEAST (5,10,0) 335#if PERL_VERSION_ATLEAST (5,10,0)
319 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 336 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
320 get_hv (name, create); 337 get_hv (name, create);
321#endif 338#endif
322 return get_hv (name, create); 339 return get_hv (name, create);
340}
341
342/* may croak */
343INLINE CV *
344coro_sv_2cv (pTHX_ SV *sv)
345{
346 HV *st;
347 GV *gvp;
348 return sv_2cv (sv, &st, &gvp, 0);
323} 349}
324 350
325static AV * 351static AV *
326coro_clone_padlist (pTHX_ CV *cv) 352coro_clone_padlist (pTHX_ CV *cv)
327{ 353{
… …
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 407 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 408
383 return 0; 409 return 0;
384} 410}
385 411
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext 412#define CORO_MAGIC_type_cv 26
387#define CORO_MAGIC_type_state PERL_MAGIC_ext 413#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 414
389static MGVTBL coro_cv_vtbl = { 415static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 416 0, 0, 0, 0,
391 coro_cv_free 417 coro_cv_free
392}; 418};
393 419
420#define CORO_MAGIC_NN(sv, type) \
421 (expect_true (SvMAGIC (sv)->mg_type == type) \
422 ? SvMAGIC (sv) \
423 : mg_find (sv, type))
424
394#define CORO_MAGIC(sv, type) \ 425#define CORO_MAGIC(sv, type) \
395 SvMAGIC (sv) \ 426 (expect_true (SvMAGIC (sv)) \
396 ? SvMAGIC (sv)->mg_type == type \ 427 ? CORO_MAGIC_NN (sv, type) \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0 428 : 0)
400 429
401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 430#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 431#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
403 432
404INLINE struct coro * 433INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro) 434SvSTATE_ (pTHX_ SV *coro)
406{ 435{
407 HV *stash; 436 HV *stash;
… …
424 mg = CORO_MAGIC_state (coro); 453 mg = CORO_MAGIC_state (coro);
425 return (struct coro *)mg->mg_ptr; 454 return (struct coro *)mg->mg_ptr;
426} 455}
427 456
428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 457#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
458
459/* faster than SvSTATE, but expects a coroutine hv */
460#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
461#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
429 462
430/* the next two functions merely cache the padlists */ 463/* the next two functions merely cache the padlists */
431static void 464static void
432get_padlist (pTHX_ CV *cv) 465get_padlist (pTHX_ CV *cv)
433{ 466{
… …
439 else 472 else
440 { 473 {
441#if CORO_PREFER_PERL_FUNCTIONS 474#if CORO_PREFER_PERL_FUNCTIONS
442 /* this is probably cleaner? but also slower! */ 475 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */ 476 /* in practise, it seems to be less stable */
444 CV *cp = Perl_cv_clone (cv); 477 CV *cp = Perl_cv_clone (aTHX_ cv);
445 CvPADLIST (cv) = CvPADLIST (cp); 478 CvPADLIST (cv) = CvPADLIST (cp);
446 CvPADLIST (cp) = 0; 479 CvPADLIST (cp) = 0;
447 SvREFCNT_dec (cp); 480 SvREFCNT_dec (cp);
448#else 481#else
449 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 482 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
501 } 534 }
502 535
503 PUTBACK; 536 PUTBACK;
504 } 537 }
505 538
506 slf_frame = c->slf_frame; 539 slf_frame = c->slf_frame;
540 CORO_THROW = c->except;
507} 541}
508 542
509static void 543static void
510save_perl (pTHX_ Coro__State c) 544save_perl (pTHX_ Coro__State c)
511{ 545{
546 c->except = CORO_THROW;
512 c->slf_frame = slf_frame; 547 c->slf_frame = slf_frame;
513 548
514 { 549 {
515 dSP; 550 dSP;
516 I32 cxix = cxstack_ix; 551 I32 cxix = cxstack_ix;
… …
591 * of perl.c:init_stacks, except that it uses less memory 626 * of perl.c:init_stacks, except that it uses less memory
592 * on the (sometimes correct) assumption that coroutines do 627 * on the (sometimes correct) assumption that coroutines do
593 * not usually need a lot of stackspace. 628 * not usually need a lot of stackspace.
594 */ 629 */
595#if CORO_PREFER_PERL_FUNCTIONS 630#if CORO_PREFER_PERL_FUNCTIONS
596# define coro_init_stacks init_stacks 631# define coro_init_stacks(thx) init_stacks ()
597#else 632#else
598static void 633static void
599coro_init_stacks (pTHX) 634coro_init_stacks (pTHX)
600{ 635{
601 PL_curstackinfo = new_stackinfo(32, 8); 636 PL_curstackinfo = new_stackinfo(32, 8);
… …
664#if !PERL_VERSION_ATLEAST (5,10,0) 699#if !PERL_VERSION_ATLEAST (5,10,0)
665 Safefree (PL_retstack); 700 Safefree (PL_retstack);
666#endif 701#endif
667} 702}
668 703
704#define CORO_RSS \
705 rss += sizeof (SYM (curstackinfo)); \
706 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
708 rss += SYM (tmps_max) * sizeof (SV *); \
709 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
710 rss += SYM (scopestack_max) * sizeof (I32); \
711 rss += SYM (savestack_max) * sizeof (ANY);
712
669static size_t 713static size_t
670coro_rss (pTHX_ struct coro *coro) 714coro_rss (pTHX_ struct coro *coro)
671{ 715{
672 size_t rss = sizeof (*coro); 716 size_t rss = sizeof (*coro);
673 717
674 if (coro->mainstack) 718 if (coro->mainstack)
675 { 719 {
676 perl_slots tmp_slot;
677 perl_slots *slot;
678
679 if (coro->flags & CF_RUNNING) 720 if (coro->flags & CF_RUNNING)
680 { 721 {
681 slot = &tmp_slot; 722 #define SYM(sym) PL_ ## sym
682 723 CORO_RSS;
683 #define VAR(name,type) slot->name = PL_ ## name;
684 # include "state.h"
685 #undef VAR 724 #undef SYM
686 } 725 }
687 else 726 else
688 slot = coro->slot;
689
690 if (slot)
691 { 727 {
692 rss += sizeof (slot->curstackinfo); 728 #define SYM(sym) coro->slot->sym
693 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 729 CORO_RSS;
694 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 730 #undef SYM
695 rss += slot->tmps_max * sizeof (SV *);
696 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
697 rss += slot->scopestack_max * sizeof (I32);
698 rss += slot->savestack_max * sizeof (ANY);
699
700#if !PERL_VERSION_ATLEAST (5,10,0)
701 rss += slot->retstack_max * sizeof (OP *);
702#endif
703 } 731 }
704 } 732 }
705 733
706 return rss; 734 return rss;
707} 735}
… …
809slf_check_nop (pTHX_ struct CoroSLF *frame) 837slf_check_nop (pTHX_ struct CoroSLF *frame)
810{ 838{
811 return 0; 839 return 0;
812} 840}
813 841
814static void 842static int
843slf_check_repeat (pTHX_ struct CoroSLF *frame)
844{
845 return 1;
846}
847
848static UNOP coro_setup_op;
849
850static void NOINLINE /* noinline to keep it out of the transfer fast path */
815coro_setup (pTHX_ struct coro *coro) 851coro_setup (pTHX_ struct coro *coro)
816{ 852{
817 /* 853 /*
818 * emulate part of the perl startup here. 854 * emulate part of the perl startup here.
819 */ 855 */
… …
846 { 882 {
847 dSP; 883 dSP;
848 UNOP myop; 884 UNOP myop;
849 885
850 Zero (&myop, 1, UNOP); 886 Zero (&myop, 1, UNOP);
851 myop.op_next = Nullop; 887 myop.op_next = Nullop;
888 myop.op_type = OP_ENTERSUB;
852 myop.op_flags = OPf_WANT_VOID; 889 myop.op_flags = OPf_WANT_VOID;
853 890
854 PUSHMARK (SP); 891 PUSHMARK (SP);
855 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 892 PUSHs ((SV *)coro->startcv);
856 PUTBACK; 893 PUTBACK;
857 PL_op = (OP *)&myop; 894 PL_op = (OP *)&myop;
858 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 895 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
859 SPAGAIN;
860 } 896 }
861 897
862 /* this newly created coroutine might be run on an existing cctx which most 898 /* this newly created coroutine might be run on an existing cctx which most
863 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 899 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
864 */ 900 */
865 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 901 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
866 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 902 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
903
904 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
905 coro_setup_op.op_next = PL_op;
906 coro_setup_op.op_type = OP_ENTERSUB;
907 coro_setup_op.op_ppaddr = pp_slf;
908 /* no flags etc. required, as an init function won't be called */
909
910 PL_op = (OP *)&coro_setup_op;
911
912 /* copy throw, in case it was set before coro_setup */
913 CORO_THROW = coro->except;
867} 914}
868 915
869static void 916static void
870coro_destruct (pTHX_ struct coro *coro) 917coro_destruct (pTHX_ struct coro *coro)
871{ 918{
… …
895 942
896 SvREFCNT_dec (PL_diehook); 943 SvREFCNT_dec (PL_diehook);
897 SvREFCNT_dec (PL_warnhook); 944 SvREFCNT_dec (PL_warnhook);
898 945
899 SvREFCNT_dec (coro->saved_deffh); 946 SvREFCNT_dec (coro->saved_deffh);
900 SvREFCNT_dec (coro->throw); 947 SvREFCNT_dec (coro->rouse_cb);
948 SvREFCNT_dec (coro->invoke_cb);
949 SvREFCNT_dec (coro->invoke_av);
901 950
902 coro_destruct_stacks (aTHX); 951 coro_destruct_stacks (aTHX);
903} 952}
904 953
905INLINE void 954INLINE void
… …
915static int 964static int
916runops_trace (pTHX) 965runops_trace (pTHX)
917{ 966{
918 COP *oldcop = 0; 967 COP *oldcop = 0;
919 int oldcxix = -2; 968 int oldcxix = -2;
920 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 969 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
921 coro_cctx *cctx = coro->cctx; 970 coro_cctx *cctx = coro->cctx;
922 971
923 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 972 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
924 { 973 {
925 PERL_ASYNC_CHECK (); 974 PERL_ASYNC_CHECK ();
… …
977 { 1026 {
978 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1027 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
979 1028
980 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1029 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
981 { 1030 {
982 runops_proc_t old_runops = PL_runops;
983 dSP; 1031 dSP;
984 GV *gv = CvGV (cx->blk_sub.cv); 1032 GV *gv = CvGV (cx->blk_sub.cv);
985 SV *fullname = sv_2mortal (newSV (0)); 1033 SV *fullname = sv_2mortal (newSV (0));
986 1034
987 if (isGV (gv)) 1035 if (isGV (gv))
… …
992 SAVETMPS; 1040 SAVETMPS;
993 EXTEND (SP, 3); 1041 EXTEND (SP, 3);
994 PUSHMARK (SP); 1042 PUSHMARK (SP);
995 PUSHs (&PL_sv_yes); 1043 PUSHs (&PL_sv_yes);
996 PUSHs (fullname); 1044 PUSHs (fullname);
997 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1045 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
998 PUTBACK; 1046 PUTBACK;
999 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1047 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1000 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1048 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1001 SPAGAIN; 1049 SPAGAIN;
1002 FREETMPS; 1050 FREETMPS;
… …
1034 1082
1035 TAINT_NOT; 1083 TAINT_NOT;
1036 return 0; 1084 return 0;
1037} 1085}
1038 1086
1087static struct coro_cctx *cctx_ssl_cctx;
1088static struct CoroSLF cctx_ssl_frame;
1089
1039static void 1090static void
1040prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1091slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1041{ 1092{
1042 ta->prev = (struct coro *)cctx; 1093 ta->prev = (struct coro *)cctx_ssl_cctx;
1043 ta->next = 0; 1094 ta->next = 0;
1044} 1095}
1045 1096
1046/* inject a fake call to Coro::State::_cctx_init into the execution */ 1097static int
1047/* _cctx_init should be careful, as it could be called at almost any time */ 1098slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1048/* during execution of a perl program */ 1099{
1049/* also initialises PL_top_env */ 1100 *frame = cctx_ssl_frame;
1101
1102 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1103}
1104
1105/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1050static void NOINLINE 1106static void NOINLINE
1051cctx_prepare (pTHX_ coro_cctx *cctx) 1107cctx_prepare (pTHX_ coro_cctx *cctx)
1052{ 1108{
1053 dSP;
1054 UNOP myop;
1055
1056 PL_top_env = &PL_start_env; 1109 PL_top_env = &PL_start_env;
1057 1110
1058 if (cctx->flags & CC_TRACE) 1111 if (cctx->flags & CC_TRACE)
1059 PL_runops = runops_trace; 1112 PL_runops = runops_trace;
1060 1113
1061 Zero (&myop, 1, UNOP); 1114 /* we already must be executing an SLF op, there is no other valid way
1062 myop.op_next = PL_op; 1115 * that can lead to creation of a new cctx */
1063 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1116 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1117 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1064 1118
1065 PUSHMARK (SP); 1119 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1066 EXTEND (SP, 2); 1120 cctx_ssl_cctx = cctx;
1067 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1121 cctx_ssl_frame = slf_frame;
1068 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1122
1069 PUTBACK; 1123 slf_frame.prepare = slf_prepare_set_stacklevel;
1070 PL_op = (OP *)&myop; 1124 slf_frame.check = slf_check_set_stacklevel;
1071 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1072 SPAGAIN;
1073} 1125}
1074 1126
1075/* the tail of transfer: execute stuff we can only do after a transfer */ 1127/* the tail of transfer: execute stuff we can only do after a transfer */
1076INLINE void 1128INLINE void
1077transfer_tail (pTHX) 1129transfer_tail (pTHX)
1078{ 1130{
1079 struct coro *next = (struct coro *)transfer_next;
1080 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1081 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1082
1083 free_coro_mortal (aTHX); 1131 free_coro_mortal (aTHX);
1084
1085 if (expect_false (next->throw))
1086 {
1087 SV *exception = sv_2mortal (next->throw);
1088
1089 next->throw = 0;
1090 sv_setsv (ERRSV, exception);
1091 croak (0);
1092 }
1093} 1132}
1094 1133
1095/* 1134/*
1096 * this is a _very_ stripped down perl interpreter ;) 1135 * this is a _very_ stripped down perl interpreter ;)
1097 */ 1136 */
… …
1112 1151
1113 /* inject a fake subroutine call to cctx_init */ 1152 /* inject a fake subroutine call to cctx_init */
1114 cctx_prepare (aTHX_ (coro_cctx *)arg); 1153 cctx_prepare (aTHX_ (coro_cctx *)arg);
1115 1154
1116 /* cctx_run is the alternative tail of transfer() */ 1155 /* cctx_run is the alternative tail of transfer() */
1117 /* TODO: throwing an exception here might be deadly, VERIFY */
1118 transfer_tail (aTHX); 1156 transfer_tail (aTHX);
1119 1157
1120 /* somebody or something will hit me for both perl_run and PL_restartop */ 1158 /* somebody or something will hit me for both perl_run and PL_restartop */
1121 PL_restartop = PL_op; 1159 PL_restartop = PL_op;
1122 perl_run (PL_curinterp); 1160 perl_run (PL_curinterp);
1161 /*
1162 * Unfortunately, there is no way to get at the return values of the
1163 * coro body here, as perl_run destroys these
1164 */
1123 1165
1124 /* 1166 /*
1125 * If perl-run returns we assume exit() was being called or the coro 1167 * If perl-run returns we assume exit() was being called or the coro
1126 * fell off the end, which seems to be the only valid (non-bug) 1168 * fell off the end, which seems to be the only valid (non-bug)
1127 * reason for perl_run to return. We try to exit by jumping to the 1169 * reason for perl_run to return. We try to exit by jumping to the
… …
1278/** coroutine switching *****************************************************/ 1320/** coroutine switching *****************************************************/
1279 1321
1280static void 1322static void
1281transfer_check (pTHX_ struct coro *prev, struct coro *next) 1323transfer_check (pTHX_ struct coro *prev, struct coro *next)
1282{ 1324{
1325 /* TODO: throwing up here is considered harmful */
1326
1283 if (expect_true (prev != next)) 1327 if (expect_true (prev != next))
1284 { 1328 {
1285 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1329 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1286 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1330 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1287 1331
… …
1297#endif 1341#endif
1298 } 1342 }
1299} 1343}
1300 1344
1301/* always use the TRANSFER macro */ 1345/* always use the TRANSFER macro */
1302static void NOINLINE 1346static void NOINLINE /* noinline so we have a fixed stackframe */
1303transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1347transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1304{ 1348{
1305 dSTACKLEVEL; 1349 dSTACKLEVEL;
1306 1350
1307 /* sometimes transfer is only called to set idle_sp */ 1351 /* sometimes transfer is only called to set idle_sp */
1308 if (expect_false (!next)) 1352 if (expect_false (!next))
1309 { 1353 {
1310 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1354 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1311 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1355 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1312 } 1356 }
1313 else if (expect_true (prev != next)) 1357 else if (expect_true (prev != next))
1314 { 1358 {
1315 coro_cctx *prev__cctx; 1359 coro_cctx *prev__cctx;
… …
1340 1384
1341 prev__cctx = prev->cctx; 1385 prev__cctx = prev->cctx;
1342 1386
1343 /* possibly untie and reuse the cctx */ 1387 /* possibly untie and reuse the cctx */
1344 if (expect_true ( 1388 if (expect_true (
1345 prev__cctx->idle_sp == (void *)stacklevel 1389 prev__cctx->idle_sp == STACKLEVEL
1346 && !(prev__cctx->flags & CC_TRACE) 1390 && !(prev__cctx->flags & CC_TRACE)
1347 && !force_cctx 1391 && !force_cctx
1348 )) 1392 ))
1349 { 1393 {
1350 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1394 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
… …
1364 ++next->usecount; 1408 ++next->usecount;
1365 1409
1366 if (expect_true (!next->cctx)) 1410 if (expect_true (!next->cctx))
1367 next->cctx = cctx_get (aTHX); 1411 next->cctx = cctx_get (aTHX);
1368 1412
1369 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1370 transfer_next = next;
1371
1372 if (expect_false (prev__cctx != next->cctx)) 1413 if (expect_false (prev__cctx != next->cctx))
1373 { 1414 {
1374 prev__cctx->top_env = PL_top_env; 1415 prev__cctx->top_env = PL_top_env;
1375 PL_top_env = next->cctx->top_env; 1416 PL_top_env = next->cctx->top_env;
1376 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1417 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
… …
1420 1461
1421 coro->slot = 0; 1462 coro->slot = 0;
1422 } 1463 }
1423 1464
1424 cctx_destroy (coro->cctx); 1465 cctx_destroy (coro->cctx);
1466 SvREFCNT_dec (coro->startcv);
1425 SvREFCNT_dec (coro->args); 1467 SvREFCNT_dec (coro->args);
1468 SvREFCNT_dec (CORO_THROW);
1426 1469
1427 if (coro->next) coro->next->prev = coro->prev; 1470 if (coro->next) coro->next->prev = coro->prev;
1428 if (coro->prev) coro->prev->next = coro->next; 1471 if (coro->prev) coro->prev->next = coro->next;
1429 if (coro == coro_first) coro_first = coro->next; 1472 if (coro == coro_first) coro_first = coro->next;
1430 1473
… …
1484 1527
1485 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1528 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1486 TRANSFER (ta, 1); 1529 TRANSFER (ta, 1);
1487} 1530}
1488 1531
1532/*****************************************************************************/
1533/* gensub: simple closure generation utility */
1534
1535#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1536
1537/* create a closure from XS, returns a code reference */
1538/* the arg can be accessed via GENSUB_ARG from the callback */
1539/* the callback must use dXSARGS/XSRETURN */
1540static SV *
1541gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1542{
1543 CV *cv = (CV *)newSV (0);
1544
1545 sv_upgrade ((SV *)cv, SVt_PVCV);
1546
1547 CvANON_on (cv);
1548 CvISXSUB_on (cv);
1549 CvXSUB (cv) = xsub;
1550 GENSUB_ARG = arg;
1551
1552 return newRV_noinc ((SV *)cv);
1553}
1554
1489/** Coro ********************************************************************/ 1555/** Coro ********************************************************************/
1490 1556
1491static void 1557INLINE void
1492coro_enq (pTHX_ SV *coro_sv) 1558coro_enq (pTHX_ struct coro *coro)
1493{ 1559{
1494 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1560 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1495} 1561}
1496 1562
1497static SV * 1563INLINE SV *
1498coro_deq (pTHX) 1564coro_deq (pTHX)
1499{ 1565{
1500 int prio; 1566 int prio;
1501 1567
1502 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1568 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1524 coro->flags |= CF_READY; 1590 coro->flags |= CF_READY;
1525 1591
1526 sv_hook = coro_nready ? 0 : coro_readyhook; 1592 sv_hook = coro_nready ? 0 : coro_readyhook;
1527 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1593 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1528 1594
1529 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1595 coro_enq (aTHX_ coro);
1530 ++coro_nready; 1596 ++coro_nready;
1531 1597
1532 if (sv_hook) 1598 if (sv_hook)
1533 { 1599 {
1534 dSP; 1600 dSP;
… …
1536 ENTER; 1602 ENTER;
1537 SAVETMPS; 1603 SAVETMPS;
1538 1604
1539 PUSHMARK (SP); 1605 PUSHMARK (SP);
1540 PUTBACK; 1606 PUTBACK;
1541 call_sv (sv_hook, G_DISCARD); 1607 call_sv (sv_hook, G_VOID | G_DISCARD);
1542 SPAGAIN;
1543 1608
1544 FREETMPS; 1609 FREETMPS;
1545 LEAVE; 1610 LEAVE;
1546 } 1611 }
1547 1612
… …
1555api_is_ready (pTHX_ SV *coro_sv) 1620api_is_ready (pTHX_ SV *coro_sv)
1556{ 1621{
1557 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1622 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1558} 1623}
1559 1624
1625/* expects to own a reference to next->hv */
1560INLINE void 1626INLINE void
1627prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1628{
1629 SV *prev_sv = SvRV (coro_current);
1630
1631 ta->prev = SvSTATE_hv (prev_sv);
1632 ta->next = next;
1633
1634 TRANSFER_CHECK (*ta);
1635
1636 SvRV_set (coro_current, (SV *)next->hv);
1637
1638 free_coro_mortal (aTHX);
1639 coro_mortal = prev_sv;
1640}
1641
1642static void
1561prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1643prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1562{ 1644{
1563 SV *prev_sv, *next_sv;
1564
1565 for (;;) 1645 for (;;)
1566 { 1646 {
1567 next_sv = coro_deq (aTHX); 1647 SV *next_sv = coro_deq (aTHX);
1568 1648
1569 /* nothing to schedule: call the idle handler */
1570 if (expect_false (!next_sv)) 1649 if (expect_true (next_sv))
1571 { 1650 {
1651 struct coro *next = SvSTATE_hv (next_sv);
1652
1653 /* cannot transfer to destroyed coros, skip and look for next */
1654 if (expect_false (next->flags & CF_DESTROYED))
1655 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1656 else
1657 {
1658 next->flags &= ~CF_READY;
1659 --coro_nready;
1660
1661 prepare_schedule_to (aTHX_ ta, next);
1662 break;
1663 }
1664 }
1665 else
1666 {
1667 /* nothing to schedule: call the idle handler */
1572 dSP; 1668 dSP;
1573 1669
1574 ENTER; 1670 ENTER;
1575 SAVETMPS; 1671 SAVETMPS;
1576 1672
1577 PUSHMARK (SP); 1673 PUSHMARK (SP);
1578 PUTBACK; 1674 PUTBACK;
1579 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1675 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1580 SPAGAIN;
1581 1676
1582 FREETMPS; 1677 FREETMPS;
1583 LEAVE; 1678 LEAVE;
1584 continue;
1585 } 1679 }
1586
1587 ta->next = SvSTATE (next_sv);
1588
1589 /* cannot transfer to destroyed coros, skip and look for next */
1590 if (expect_false (ta->next->flags & CF_DESTROYED))
1591 {
1592 SvREFCNT_dec (next_sv);
1593 /* coro_nready has already been taken care of by destroy */
1594 continue;
1595 }
1596
1597 --coro_nready;
1598 break;
1599 } 1680 }
1600
1601 /* free this only after the transfer */
1602 prev_sv = SvRV (coro_current);
1603 ta->prev = SvSTATE (prev_sv);
1604 TRANSFER_CHECK (*ta);
1605 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1606 ta->next->flags &= ~CF_READY;
1607 SvRV_set (coro_current, next_sv);
1608
1609 free_coro_mortal (aTHX);
1610 coro_mortal = prev_sv;
1611} 1681}
1612 1682
1613INLINE void 1683INLINE void
1614prepare_cede (pTHX_ struct coro_transfer_args *ta) 1684prepare_cede (pTHX_ struct coro_transfer_args *ta)
1615{ 1685{
… …
1636{ 1706{
1637 struct coro_transfer_args ta; 1707 struct coro_transfer_args ta;
1638 1708
1639 prepare_schedule (aTHX_ &ta); 1709 prepare_schedule (aTHX_ &ta);
1640 TRANSFER (ta, 1); 1710 TRANSFER (ta, 1);
1711}
1712
1713static void
1714api_schedule_to (pTHX_ SV *coro_sv)
1715{
1716 struct coro_transfer_args ta;
1717 struct coro *next = SvSTATE (coro_sv);
1718
1719 SvREFCNT_inc_NN (coro_sv);
1720 prepare_schedule_to (aTHX_ &ta, next);
1641} 1721}
1642 1722
1643static int 1723static int
1644api_cede (pTHX) 1724api_cede (pTHX)
1645{ 1725{
… …
1692 if (coro->flags & CF_RUNNING) 1772 if (coro->flags & CF_RUNNING)
1693 PL_runops = RUNOPS_DEFAULT; 1773 PL_runops = RUNOPS_DEFAULT;
1694 else 1774 else
1695 coro->slot->runops = RUNOPS_DEFAULT; 1775 coro->slot->runops = RUNOPS_DEFAULT;
1696 } 1776 }
1777}
1778
1779static void
1780coro_call_on_destroy (pTHX_ struct coro *coro)
1781{
1782 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1783 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1784
1785 if (on_destroyp)
1786 {
1787 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1788
1789 while (AvFILLp (on_destroy) >= 0)
1790 {
1791 dSP; /* don't disturb outer sp */
1792 SV *cb = av_pop (on_destroy);
1793
1794 PUSHMARK (SP);
1795
1796 if (statusp)
1797 {
1798 int i;
1799 AV *status = (AV *)SvRV (*statusp);
1800 EXTEND (SP, AvFILLp (status) + 1);
1801
1802 for (i = 0; i <= AvFILLp (status); ++i)
1803 PUSHs (AvARRAY (status)[i]);
1804 }
1805
1806 PUTBACK;
1807 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1808 }
1809 }
1810}
1811
1812static void
1813slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1814{
1815 int i;
1816 HV *hv = (HV *)SvRV (coro_current);
1817 AV *av = newAV ();
1818
1819 av_extend (av, items - 1);
1820 for (i = 0; i < items; ++i)
1821 av_push (av, SvREFCNT_inc_NN (arg [i]));
1822
1823 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1824
1825 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1826 api_ready (aTHX_ sv_manager);
1827
1828 frame->prepare = prepare_schedule;
1829 frame->check = slf_check_repeat;
1830}
1831
1832/*****************************************************************************/
1833/* async pool handler */
1834
1835static int
1836slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1837{
1838 HV *hv = (HV *)SvRV (coro_current);
1839 struct coro *coro = (struct coro *)frame->data;
1840
1841 if (!coro->invoke_cb)
1842 return 1; /* loop till we have invoke */
1843 else
1844 {
1845 hv_store (hv, "desc", sizeof ("desc") - 1,
1846 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1847
1848 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1849
1850 {
1851 dSP;
1852 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1853 PUTBACK;
1854 }
1855
1856 SvREFCNT_dec (GvAV (PL_defgv));
1857 GvAV (PL_defgv) = coro->invoke_av;
1858 coro->invoke_av = 0;
1859
1860 return 0;
1861 }
1862}
1863
1864static void
1865slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 HV *hv = (HV *)SvRV (coro_current);
1868 struct coro *coro = SvSTATE_hv ((SV *)hv);
1869
1870 if (expect_true (coro->saved_deffh))
1871 {
1872 /* subsequent iteration */
1873 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1874 coro->saved_deffh = 0;
1875
1876 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1877 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1878 {
1879 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1880 coro->invoke_av = newAV ();
1881
1882 frame->prepare = prepare_nop;
1883 }
1884 else
1885 {
1886 av_clear (GvAV (PL_defgv));
1887 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1888
1889 coro->prio = 0;
1890
1891 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1892 api_trace (aTHX_ coro_current, 0);
1893
1894 frame->prepare = prepare_schedule;
1895 av_push (av_async_pool, SvREFCNT_inc (hv));
1896 }
1897 }
1898 else
1899 {
1900 /* first iteration, simply fall through */
1901 frame->prepare = prepare_nop;
1902 }
1903
1904 frame->check = slf_check_pool_handler;
1905 frame->data = (void *)coro;
1906}
1907
1908/*****************************************************************************/
1909/* rouse callback */
1910
1911#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1912
1913static void
1914coro_rouse_callback (pTHX_ CV *cv)
1915{
1916 dXSARGS;
1917 SV *data = (SV *)GENSUB_ARG;
1918
1919 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1920 {
1921 /* first call, set args */
1922 AV *av = newAV ();
1923 SV *coro = SvRV (data);
1924
1925 SvRV_set (data, (SV *)av);
1926 api_ready (aTHX_ coro);
1927 SvREFCNT_dec (coro);
1928
1929 /* better take a full copy of the arguments */
1930 while (items--)
1931 av_store (av, items, newSVsv (ST (items)));
1932 }
1933
1934 XSRETURN_EMPTY;
1935}
1936
1937static int
1938slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1939{
1940 SV *data = (SV *)frame->data;
1941
1942 if (CORO_THROW)
1943 return 0;
1944
1945 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1946 return 1;
1947
1948 /* now push all results on the stack */
1949 {
1950 dSP;
1951 AV *av = (AV *)SvRV (data);
1952 int i;
1953
1954 EXTEND (SP, AvFILLp (av) + 1);
1955 for (i = 0; i <= AvFILLp (av); ++i)
1956 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1957
1958 /* we have stolen the elements, so ste length to zero and free */
1959 AvFILLp (av) = -1;
1960 av_undef (av);
1961
1962 PUTBACK;
1963 }
1964
1965 return 0;
1966}
1967
1968static void
1969slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1970{
1971 SV *cb;
1972
1973 if (items)
1974 cb = arg [0];
1975 else
1976 {
1977 struct coro *coro = SvSTATE_current;
1978
1979 if (!coro->rouse_cb)
1980 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1981
1982 cb = sv_2mortal (coro->rouse_cb);
1983 coro->rouse_cb = 0;
1984 }
1985
1986 if (!SvROK (cb)
1987 || SvTYPE (SvRV (cb)) != SVt_PVCV
1988 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1989 croak ("Coro::rouse_wait called with illegal callback argument,");
1990
1991 {
1992 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1993 SV *data = (SV *)GENSUB_ARG;
1994
1995 frame->data = (void *)data;
1996 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1997 frame->check = slf_check_rouse_wait;
1998 }
1999}
2000
2001static SV *
2002coro_new_rouse_cb (pTHX)
2003{
2004 HV *hv = (HV *)SvRV (coro_current);
2005 struct coro *coro = SvSTATE_hv (hv);
2006 SV *data = newRV_inc ((SV *)hv);
2007 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2008
2009 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2010 SvREFCNT_dec (data); /* magicext increases the refcount */
2011
2012 SvREFCNT_dec (coro->rouse_cb);
2013 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2014
2015 return cb;
2016}
2017
2018/*****************************************************************************/
2019/* schedule-like-function opcode (SLF) */
2020
2021static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2022static const CV *slf_cv;
2023static SV **slf_argv;
2024static int slf_argc, slf_arga; /* count, allocated */
2025static I32 slf_ax; /* top of stack, for restore */
2026
2027/* this restores the stack in the case we patched the entersub, to */
2028/* recreate the stack frame as perl will on following calls */
2029/* since entersub cleared the stack */
2030static OP *
2031pp_restore (pTHX)
2032{
2033 int i;
2034 SV **SP = PL_stack_base + slf_ax;
2035
2036 PUSHMARK (SP);
2037
2038 EXTEND (SP, slf_argc + 1);
2039
2040 for (i = 0; i < slf_argc; ++i)
2041 PUSHs (sv_2mortal (slf_argv [i]));
2042
2043 PUSHs ((SV *)CvGV (slf_cv));
2044
2045 RETURNOP (slf_restore.op_first);
2046}
2047
2048static void
2049slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2050{
2051 SV **arg = (SV **)slf_frame.data;
2052
2053 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2054}
2055
2056static void
2057slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{
2059 if (items != 2)
2060 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2061
2062 frame->prepare = slf_prepare_transfer;
2063 frame->check = slf_check_nop;
2064 frame->data = (void *)arg; /* let's hope it will stay valid */
2065}
2066
2067static void
2068slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2069{
2070 frame->prepare = prepare_schedule;
2071 frame->check = slf_check_nop;
2072}
2073
2074static void
2075slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2076{
2077 struct coro *next = (struct coro *)slf_frame.data;
2078
2079 SvREFCNT_inc_NN (next->hv);
2080 prepare_schedule_to (aTHX_ ta, next);
2081}
2082
2083static void
2084slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 if (!items)
2087 croak ("Coro::schedule_to expects a coroutine argument, caught");
2088
2089 frame->data = (void *)SvSTATE (arg [0]);
2090 frame->prepare = slf_prepare_schedule_to;
2091 frame->check = slf_check_nop;
2092}
2093
2094static void
2095slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{
2097 api_ready (aTHX_ SvRV (coro_current));
2098
2099 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2100}
2101
2102static void
2103slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2104{
2105 frame->prepare = prepare_cede;
2106 frame->check = slf_check_nop;
2107}
2108
2109static void
2110slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2111{
2112 frame->prepare = prepare_cede_notself;
2113 frame->check = slf_check_nop;
2114}
2115
2116/*
2117 * these not obviously related functions are all rolled into one
2118 * function to increase chances that they all will call transfer with the same
2119 * stack offset
2120 * SLF stands for "schedule-like-function".
2121 */
2122static OP *
2123pp_slf (pTHX)
2124{
2125 I32 checkmark; /* mark SP to see how many elements check has pushed */
2126
2127 /* set up the slf frame, unless it has already been set-up */
2128 /* the latter happens when a new coro has been started */
2129 /* or when a new cctx was attached to an existing coroutine */
2130 if (expect_true (!slf_frame.prepare))
2131 {
2132 /* first iteration */
2133 dSP;
2134 SV **arg = PL_stack_base + TOPMARK + 1;
2135 int items = SP - arg; /* args without function object */
2136 SV *gv = *sp;
2137
2138 /* do a quick consistency check on the "function" object, and if it isn't */
2139 /* for us, divert to the real entersub */
2140 if (SvTYPE (gv) != SVt_PVGV
2141 || !GvCV (gv)
2142 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2143 return PL_ppaddr[OP_ENTERSUB](aTHX);
2144
2145 if (!(PL_op->op_flags & OPf_STACKED))
2146 {
2147 /* ampersand-form of call, use @_ instead of stack */
2148 AV *av = GvAV (PL_defgv);
2149 arg = AvARRAY (av);
2150 items = AvFILLp (av) + 1;
2151 }
2152
2153 /* now call the init function, which needs to set up slf_frame */
2154 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2155 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2156
2157 /* pop args */
2158 SP = PL_stack_base + POPMARK;
2159
2160 PUTBACK;
2161 }
2162
2163 /* now that we have a slf_frame, interpret it! */
2164 /* we use a callback system not to make the code needlessly */
2165 /* complicated, but so we can run multiple perl coros from one cctx */
2166
2167 do
2168 {
2169 struct coro_transfer_args ta;
2170
2171 slf_frame.prepare (aTHX_ &ta);
2172 TRANSFER (ta, 0);
2173
2174 checkmark = PL_stack_sp - PL_stack_base;
2175 }
2176 while (slf_frame.check (aTHX_ &slf_frame));
2177
2178 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2179
2180 /* exception handling */
2181 if (expect_false (CORO_THROW))
2182 {
2183 SV *exception = sv_2mortal (CORO_THROW);
2184
2185 CORO_THROW = 0;
2186 sv_setsv (ERRSV, exception);
2187 croak (0);
2188 }
2189
2190 /* return value handling - mostly like entersub */
2191 /* make sure we put something on the stack in scalar context */
2192 if (GIMME_V == G_SCALAR)
2193 {
2194 dSP;
2195 SV **bot = PL_stack_base + checkmark;
2196
2197 if (sp == bot) /* too few, push undef */
2198 bot [1] = &PL_sv_undef;
2199 else if (sp != bot + 1) /* too many, take last one */
2200 bot [1] = *sp;
2201
2202 SP = bot + 1;
2203
2204 PUTBACK;
2205 }
2206
2207 return NORMAL;
2208}
2209
2210static void
2211api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2212{
2213 int i;
2214 SV **arg = PL_stack_base + ax;
2215 int items = PL_stack_sp - arg + 1;
2216
2217 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2218
2219 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2220 && PL_op->op_ppaddr != pp_slf)
2221 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2222
2223 CvFLAGS (cv) |= CVf_SLF;
2224 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2225 slf_cv = cv;
2226
2227 /* we patch the op, and then re-run the whole call */
2228 /* we have to put the same argument on the stack for this to work */
2229 /* and this will be done by pp_restore */
2230 slf_restore.op_next = (OP *)&slf_restore;
2231 slf_restore.op_type = OP_CUSTOM;
2232 slf_restore.op_ppaddr = pp_restore;
2233 slf_restore.op_first = PL_op;
2234
2235 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2236
2237 if (PL_op->op_flags & OPf_STACKED)
2238 {
2239 if (items > slf_arga)
2240 {
2241 slf_arga = items;
2242 free (slf_argv);
2243 slf_argv = malloc (slf_arga * sizeof (SV *));
2244 }
2245
2246 slf_argc = items;
2247
2248 for (i = 0; i < items; ++i)
2249 slf_argv [i] = SvREFCNT_inc (arg [i]);
2250 }
2251 else
2252 slf_argc = 0;
2253
2254 PL_op->op_ppaddr = pp_slf;
2255 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2256
2257 PL_op = (OP *)&slf_restore;
1697} 2258}
1698 2259
1699/*****************************************************************************/ 2260/*****************************************************************************/
1700/* PerlIO::cede */ 2261/* PerlIO::cede */
1701 2262
… …
1770 PerlIOBuf_get_cnt, 2331 PerlIOBuf_get_cnt,
1771 PerlIOBuf_set_ptrcnt, 2332 PerlIOBuf_set_ptrcnt,
1772}; 2333};
1773 2334
1774/*****************************************************************************/ 2335/*****************************************************************************/
2336/* Coro::Semaphore & Coro::Signal */
1775 2337
1776static const CV *slf_cv; /* for quick consistency check */
1777
1778static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1779static SV *slf_arg0;
1780static SV *slf_arg1;
1781static SV *slf_arg2;
1782
1783/* this restores the stack in the case we patched the entersub, to */
1784/* recreate the stack frame as perl will on following calls */
1785/* since entersub cleared the stack */
1786static OP * 2338static SV *
1787pp_restore (pTHX) 2339coro_waitarray_new (pTHX_ int count)
1788{ 2340{
1789 dSP; 2341 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2342 AV *av = newAV ();
2343 SV **ary;
1790 2344
1791 PUSHMARK (SP); 2345 /* unfortunately, building manually saves memory */
2346 Newx (ary, 2, SV *);
2347 AvALLOC (av) = ary;
2348 /*AvARRAY (av) = ary;*/
2349 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2350 AvMAX (av) = 1;
2351 AvFILLp (av) = 0;
2352 ary [0] = newSViv (count);
1792 2353
1793 EXTEND (SP, 3); 2354 return newRV_noinc ((SV *)av);
1794 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1795 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1796 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1797 PUSHs ((SV *)CvGV (slf_cv));
1798
1799 RETURNOP (slf_restore.op_first);
1800} 2355}
1801 2356
1802static void 2357/* semaphore */
1803slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1804{
1805 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1806}
1807 2358
1808static void 2359static void
1809slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1810{
1811 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1812
1813 frame->prepare = slf_prepare_set_stacklevel;
1814 frame->check = slf_check_nop;
1815 frame->data = (void *)SvIV (arg [0]);
1816}
1817
1818static void
1819slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1820{
1821 SV **arg = (SV **)slf_frame.data;
1822
1823 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1824}
1825
1826static void
1827slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1828{
1829 if (items != 2)
1830 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1831
1832 frame->prepare = slf_prepare_transfer;
1833 frame->check = slf_check_nop;
1834 frame->data = (void *)arg; /* let's hope it will stay valid */
1835}
1836
1837static void
1838slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 frame->prepare = prepare_schedule;
1841 frame->check = slf_check_nop;
1842}
1843
1844static void
1845slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1846{
1847 frame->prepare = prepare_cede;
1848 frame->check = slf_check_nop;
1849}
1850
1851static void
1852slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1853{
1854 frame->prepare = prepare_cede_notself;
1855 frame->check = slf_check_nop;
1856}
1857
1858/* we hijack an hopefully unused CV flag for our purposes */
1859#define CVf_SLF 0x4000
1860
1861/*
1862 * these not obviously related functions are all rolled into one
1863 * function to increase chances that they all will call transfer with the same
1864 * stack offset
1865 * SLF stands for "schedule-like-function".
1866 */
1867static OP *
1868pp_slf (pTHX)
1869{
1870 I32 checkmark; /* mark SP to see how many elements check has pushed */
1871
1872 /* set up the slf frame, unless it has already been set-up */
1873 /* the latter happens when a new coro has been started */
1874 /* or when a new cctx was attached to an existing coroutine */
1875 if (expect_true (!slf_frame.prepare))
1876 {
1877 /* first iteration */
1878 dSP;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 SV *gv = *sp;
1882
1883 /* do a quick consistency check on the "function" object, and if it isn't */
1884 /* for us, divert to the real entersub */
1885 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1886 return PL_ppaddr[OP_ENTERSUB](aTHX);
1887
1888 /* pop args */
1889 SP = PL_stack_base + POPMARK;
1890
1891 if (!(PL_op->op_flags & OPf_STACKED))
1892 {
1893 /* ampersand-form of call, use @_ instead of stack */
1894 AV *av = GvAV (PL_defgv);
1895 arg = AvARRAY (av);
1896 items = AvFILLp (av) + 1;
1897 }
1898
1899 PUTBACK;
1900
1901 /* now call the init function, which needs to set up slf_frame */
1902 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1903 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1904 }
1905
1906 /* now that we have a slf_frame, interpret it! */
1907 /* we use a callback system not to make the code needlessly */
1908 /* complicated, but so we can run multiple perl coros from one cctx */
1909
1910 do
1911 {
1912 struct coro_transfer_args ta;
1913
1914 slf_frame.prepare (aTHX_ &ta);
1915 TRANSFER (ta, 0);
1916
1917 checkmark = PL_stack_sp - PL_stack_base;
1918 }
1919 while (slf_frame.check (aTHX_ &slf_frame));
1920
1921 {
1922 dSP;
1923 SV **bot = PL_stack_base + checkmark;
1924 int gimme = GIMME_V;
1925
1926 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1927
1928 /* make sure we put something on the stack in scalar context */
1929 if (gimme == G_SCALAR)
1930 {
1931 if (sp == bot)
1932 XPUSHs (&PL_sv_undef);
1933
1934 SP = bot + 1;
1935 }
1936
1937 PUTBACK;
1938 }
1939
1940 return NORMAL;
1941}
1942
1943static void
1944api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1945{
1946 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1947
1948 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1949 && PL_op->op_ppaddr != pp_slf)
1950 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1951
1952 if (items > 3)
1953 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1954
1955 CvFLAGS (cv) |= CVf_SLF;
1956 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1957 slf_cv = cv;
1958
1959 /* we patch the op, and then re-run the whole call */
1960 /* we have to put the same argument on the stack for this to work */
1961 /* and this will be done by pp_restore */
1962 slf_restore.op_next = (OP *)&slf_restore;
1963 slf_restore.op_type = OP_CUSTOM;
1964 slf_restore.op_ppaddr = pp_restore;
1965 slf_restore.op_first = PL_op;
1966
1967 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1968 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1969 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1970
1971 PL_op->op_ppaddr = pp_slf;
1972
1973 PL_op = (OP *)&slf_restore;
1974}
1975
1976/*****************************************************************************/
1977
1978static void
1979coro_semaphore_adjust (AV *av, int adjust) 2360coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1980{ 2361{
1981 SV *count_sv = AvARRAY (av)[0]; 2362 SV *count_sv = AvARRAY (av)[0];
1982 IV count = SvIVX (count_sv); 2363 IV count = SvIVX (count_sv);
1983 2364
1984 count += adjust; 2365 count += adjust;
1985 SvIVX (count_sv) = count; 2366 SvIVX (count_sv) = count;
1986 2367
1987 /* now wake up as many waiters as possible */ 2368 /* now wake up as many waiters as are expected to lock */
1988 while (count > 0 && AvFILLp (av) >= count) 2369 while (count > 0 && AvFILLp (av) > 0)
1989 { 2370 {
1990 SV *cb; 2371 SV *cb;
1991 2372
1992 /* swap first two elements so we can shift a waiter */ 2373 /* swap first two elements so we can shift a waiter */
1993 AvARRAY (av)[0] = AvARRAY (av)[1]; 2374 AvARRAY (av)[0] = AvARRAY (av)[1];
1994 AvARRAY (av)[1] = count_sv; 2375 AvARRAY (av)[1] = count_sv;
1995 cb = av_shift (av); 2376 cb = av_shift (av);
1996 2377
1997 if (SvOBJECT (cb)) 2378 if (SvOBJECT (cb))
2379 {
1998 api_ready (aTHX_ cb); 2380 api_ready (aTHX_ cb);
1999 else 2381 --count;
2000 croak ("callbacks not yet supported"); 2382 }
2383 else if (SvTYPE (cb) == SVt_PVCV)
2384 {
2385 dSP;
2386 PUSHMARK (SP);
2387 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2388 PUTBACK;
2389 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2390 }
2001 2391
2002 SvREFCNT_dec (cb); 2392 SvREFCNT_dec (cb);
2003
2004 --count;
2005 } 2393 }
2006} 2394}
2007 2395
2008static void 2396static void
2009coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2397coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2010{ 2398{
2011 /* call $sem->adjust (0) to possibly wake up some waiters */ 2399 /* call $sem->adjust (0) to possibly wake up some other waiters */
2012 coro_semaphore_adjust ((AV *)coro->slf_frame.data, 0); 2400 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2013} 2401}
2014 2402
2015static int 2403static int
2016slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2404slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2017{ 2405{
2018 AV *av = (AV *)frame->data; 2406 AV *av = (AV *)frame->data;
2019 SV *count_sv = AvARRAY (av)[0]; 2407 SV *count_sv = AvARRAY (av)[0];
2020 2408
2409 /* if we are about to throw, don't actually acquire the lock, just throw */
2410 if (CORO_THROW)
2411 return 0;
2021 if (SvIVX (count_sv) > 0) 2412 else if (SvIVX (count_sv) > 0)
2022 { 2413 {
2023 SvSTATE (coro_current)->on_destroy = 0; 2414 SvSTATE_current->on_destroy = 0;
2415
2416 if (acquire)
2024 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2417 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2418 else
2419 coro_semaphore_adjust (aTHX_ av, 0);
2420
2025 return 0; 2421 return 0;
2026 } 2422 }
2027 else 2423 else
2028 { 2424 {
2029 int i; 2425 int i;
… …
2038 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2434 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2039 return 1; 2435 return 1;
2040 } 2436 }
2041} 2437}
2042 2438
2043static void 2439static int
2440slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2441{
2442 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2443}
2444
2445static int
2446slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2447{
2448 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2449}
2450
2451static void
2044slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2452slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2045{ 2453{
2046 AV *av = (AV *)SvRV (arg [0]); 2454 AV *av = (AV *)SvRV (arg [0]);
2047 2455
2048 if (SvIVX (AvARRAY (av)[0]) > 0) 2456 if (SvIVX (AvARRAY (av)[0]) > 0)
2049 { 2457 {
… …
2057 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2465 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2058 frame->prepare = prepare_schedule; 2466 frame->prepare = prepare_schedule;
2059 2467
2060 /* to avoid race conditions when a woken-up coro gets terminated */ 2468 /* to avoid race conditions when a woken-up coro gets terminated */
2061 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2469 /* we arrange for a temporary on_destroy that calls adjust (0) */
2062 SvSTATE (coro_current)->on_destroy = coro_semaphore_on_destroy; 2470 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2063 } 2471 }
2472}
2064 2473
2474static void
2475slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2476{
2477 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 2478 frame->check = slf_check_semaphore_down;
2479}
2066 2480
2481static void
2482slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2483{
2484 if (items >= 2)
2485 {
2486 /* callback form */
2487 AV *av = (AV *)SvRV (arg [0]);
2488 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2489
2490 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2491
2492 if (SvIVX (AvARRAY (av)[0]) > 0)
2493 coro_semaphore_adjust (aTHX_ av, 0);
2494
2495 frame->prepare = prepare_nop;
2496 frame->check = slf_check_nop;
2497 }
2498 else
2499 {
2500 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2501 frame->check = slf_check_semaphore_wait;
2502 }
2503}
2504
2505/* signal */
2506
2507static void
2508coro_signal_wake (pTHX_ AV *av, int count)
2509{
2510 SvIVX (AvARRAY (av)[0]) = 0;
2511
2512 /* now signal count waiters */
2513 while (count > 0 && AvFILLp (av) > 0)
2514 {
2515 SV *cb;
2516
2517 /* swap first two elements so we can shift a waiter */
2518 cb = AvARRAY (av)[0];
2519 AvARRAY (av)[0] = AvARRAY (av)[1];
2520 AvARRAY (av)[1] = cb;
2521
2522 cb = av_shift (av);
2523
2524 api_ready (aTHX_ cb);
2525 sv_setiv (cb, 0); /* signal waiter */
2526 SvREFCNT_dec (cb);
2527
2528 --count;
2529 }
2530}
2531
2532static int
2533slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2534{
2535 /* if we are about to throw, also stop waiting */
2536 return SvROK ((SV *)frame->data) && !CORO_THROW;
2537}
2538
2539static void
2540slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2541{
2542 AV *av = (AV *)SvRV (arg [0]);
2543
2544 if (SvIVX (AvARRAY (av)[0]))
2545 {
2546 SvIVX (AvARRAY (av)[0]) = 0;
2547 frame->prepare = prepare_nop;
2548 frame->check = slf_check_nop;
2549 }
2550 else
2551 {
2552 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2553
2554 av_push (av, waiter);
2555
2556 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2557 frame->prepare = prepare_schedule;
2558 frame->check = slf_check_signal_wait;
2559 }
2067} 2560}
2068 2561
2069/*****************************************************************************/ 2562/*****************************************************************************/
2563/* Coro::AIO */
2070 2564
2071#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2565#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2072 2566
2073/* create a closure from XS, returns a code reference */ 2567/* helper storage struct */
2074/* the arg can be accessed via GENSUB_ARG from the callback */ 2568struct io_state
2075/* the callback must use dXSARGS/XSRETURN */
2076static SV *
2077gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2078{ 2569{
2079 CV *cv = (CV *)NEWSV (0, 0); 2570 int errorno;
2571 I32 laststype; /* U16 in 5.10.0 */
2572 int laststatval;
2573 Stat_t statcache;
2574};
2080 2575
2576static void
2577coro_aio_callback (pTHX_ CV *cv)
2578{
2579 dXSARGS;
2580 AV *state = (AV *)GENSUB_ARG;
2581 SV *coro = av_pop (state);
2582 SV *data_sv = newSV (sizeof (struct io_state));
2583
2584 av_extend (state, items - 1);
2585
2081 sv_upgrade ((SV *)cv, SVt_PVCV); 2586 sv_upgrade (data_sv, SVt_PV);
2587 SvCUR_set (data_sv, sizeof (struct io_state));
2588 SvPOK_only (data_sv);
2082 2589
2083 CvANON_on (cv); 2590 {
2084 CvISXSUB_on (cv); 2591 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2085 CvXSUB (cv) = xsub;
2086 GENSUB_ARG = arg;
2087 2592
2088 return newRV_noinc ((SV *)cv); 2593 data->errorno = errno;
2594 data->laststype = PL_laststype;
2595 data->laststatval = PL_laststatval;
2596 data->statcache = PL_statcache;
2597 }
2598
2599 /* now build the result vector out of all the parameters and the data_sv */
2600 {
2601 int i;
2602
2603 for (i = 0; i < items; ++i)
2604 av_push (state, SvREFCNT_inc_NN (ST (i)));
2605 }
2606
2607 av_push (state, data_sv);
2608
2609 api_ready (aTHX_ coro);
2610 SvREFCNT_dec (coro);
2611 SvREFCNT_dec ((AV *)state);
2612}
2613
2614static int
2615slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2616{
2617 AV *state = (AV *)frame->data;
2618
2619 /* if we are about to throw, return early */
2620 /* this does not cancel the aio request, but at least */
2621 /* it quickly returns */
2622 if (CORO_THROW)
2623 return 0;
2624
2625 /* one element that is an RV? repeat! */
2626 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2627 return 1;
2628
2629 /* restore status */
2630 {
2631 SV *data_sv = av_pop (state);
2632 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2633
2634 errno = data->errorno;
2635 PL_laststype = data->laststype;
2636 PL_laststatval = data->laststatval;
2637 PL_statcache = data->statcache;
2638
2639 SvREFCNT_dec (data_sv);
2640 }
2641
2642 /* push result values */
2643 {
2644 dSP;
2645 int i;
2646
2647 EXTEND (SP, AvFILLp (state) + 1);
2648 for (i = 0; i <= AvFILLp (state); ++i)
2649 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2650
2651 PUTBACK;
2652 }
2653
2654 return 0;
2655}
2656
2657static void
2658slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2659{
2660 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2661 SV *coro_hv = SvRV (coro_current);
2662 struct coro *coro = SvSTATE_hv (coro_hv);
2663
2664 /* put our coroutine id on the state arg */
2665 av_push (state, SvREFCNT_inc_NN (coro_hv));
2666
2667 /* first see whether we have a non-zero priority and set it as AIO prio */
2668 if (coro->prio)
2669 {
2670 dSP;
2671
2672 static SV *prio_cv;
2673 static SV *prio_sv;
2674
2675 if (expect_false (!prio_cv))
2676 {
2677 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2678 prio_sv = newSViv (0);
2679 }
2680
2681 PUSHMARK (SP);
2682 sv_setiv (prio_sv, coro->prio);
2683 XPUSHs (prio_sv);
2684
2685 PUTBACK;
2686 call_sv (prio_cv, G_VOID | G_DISCARD);
2687 }
2688
2689 /* now call the original request */
2690 {
2691 dSP;
2692 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2693 int i;
2694
2695 PUSHMARK (SP);
2696
2697 /* first push all args to the stack */
2698 EXTEND (SP, items + 1);
2699
2700 for (i = 0; i < items; ++i)
2701 PUSHs (arg [i]);
2702
2703 /* now push the callback closure */
2704 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2705
2706 /* now call the AIO function - we assume our request is uncancelable */
2707 PUTBACK;
2708 call_sv ((SV *)req, G_VOID | G_DISCARD);
2709 }
2710
2711 /* now that the requets is going, we loop toll we have a result */
2712 frame->data = (void *)state;
2713 frame->prepare = prepare_schedule;
2714 frame->check = slf_check_aio_req;
2715}
2716
2717static void
2718coro_aio_req_xs (pTHX_ CV *cv)
2719{
2720 dXSARGS;
2721
2722 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2723
2724 XSRETURN_EMPTY;
2089} 2725}
2090 2726
2091/*****************************************************************************/ 2727/*****************************************************************************/
2092 2728
2093MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2729MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
… …
2095PROTOTYPES: DISABLE 2731PROTOTYPES: DISABLE
2096 2732
2097BOOT: 2733BOOT:
2098{ 2734{
2099#ifdef USE_ITHREADS 2735#ifdef USE_ITHREADS
2100 MUTEX_INIT (&coro_lock);
2101# if CORO_PTHREAD 2736# if CORO_PTHREAD
2102 coro_thx = PERL_GET_CONTEXT; 2737 coro_thx = PERL_GET_CONTEXT;
2103# endif 2738# endif
2104#endif 2739#endif
2105 BOOT_PAGESIZE; 2740 BOOT_PAGESIZE;
… …
2130 2765
2131 { 2766 {
2132 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2767 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2133 2768
2134 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2769 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2135 hv_store_ent (PL_custom_op_names, slf, 2770 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2136 newSVpv ("coro_slf", 0), 0);
2137 2771
2138 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2772 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2139 hv_store_ent (PL_custom_op_descs, slf, 2773 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2140 newSVpv ("coro schedule like function", 0), 0);
2141 } 2774 }
2142 2775
2143 coroapi.ver = CORO_API_VERSION; 2776 coroapi.ver = CORO_API_VERSION;
2144 coroapi.rev = CORO_API_REVISION; 2777 coroapi.rev = CORO_API_REVISION;
2145 2778
… …
2164 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2797 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2165} 2798}
2166 2799
2167SV * 2800SV *
2168new (char *klass, ...) 2801new (char *klass, ...)
2802 ALIAS:
2803 Coro::new = 1
2169 CODE: 2804 CODE:
2170{ 2805{
2171 struct coro *coro; 2806 struct coro *coro;
2172 MAGIC *mg; 2807 MAGIC *mg;
2173 HV *hv; 2808 HV *hv;
2809 CV *cb;
2174 int i; 2810 int i;
2811
2812 if (items > 1)
2813 {
2814 cb = coro_sv_2cv (aTHX_ ST (1));
2815
2816 if (!ix)
2817 {
2818 if (CvISXSUB (cb))
2819 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2820
2821 if (!CvROOT (cb))
2822 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2823 }
2824 }
2175 2825
2176 Newz (0, coro, 1, struct coro); 2826 Newz (0, coro, 1, struct coro);
2177 coro->args = newAV (); 2827 coro->args = newAV ();
2178 coro->flags = CF_NEW; 2828 coro->flags = CF_NEW;
2179 2829
… …
2184 coro->hv = hv = newHV (); 2834 coro->hv = hv = newHV ();
2185 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2835 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2186 mg->mg_flags |= MGf_DUP; 2836 mg->mg_flags |= MGf_DUP;
2187 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2837 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2188 2838
2839 if (items > 1)
2840 {
2189 av_extend (coro->args, items - 1); 2841 av_extend (coro->args, items - 1 + ix - 1);
2842
2843 if (ix)
2844 {
2845 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2846 cb = cv_coro_run;
2847 }
2848
2849 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2850
2190 for (i = 1; i < items; i++) 2851 for (i = 2; i < items; i++)
2191 av_push (coro->args, newSVsv (ST (i))); 2852 av_push (coro->args, newSVsv (ST (i)));
2853 }
2192} 2854}
2193 OUTPUT: 2855 OUTPUT:
2194 RETVAL 2856 RETVAL
2195
2196void
2197_set_stacklevel (...)
2198 CODE:
2199 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2200 2857
2201void 2858void
2202transfer (...) 2859transfer (...)
2203 PROTOTYPE: $$ 2860 PROTOTYPE: $$
2204 CODE: 2861 CODE:
2205 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2862 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2206 2863
2207bool 2864bool
2208_destroy (SV *coro_sv) 2865_destroy (SV *coro_sv)
2209 CODE: 2866 CODE:
2210 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2867 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2328 2985
2329void 2986void
2330throw (Coro::State self, SV *throw = &PL_sv_undef) 2987throw (Coro::State self, SV *throw = &PL_sv_undef)
2331 PROTOTYPE: $;$ 2988 PROTOTYPE: $;$
2332 CODE: 2989 CODE:
2990{
2991 struct coro *current = SvSTATE_current;
2992 SV **throwp = self == current ? &CORO_THROW : &self->except;
2333 SvREFCNT_dec (self->throw); 2993 SvREFCNT_dec (*throwp);
2334 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2994 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2995}
2335 2996
2336void 2997void
2337api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2998api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2338 PROTOTYPE: $;$ 2999 PROTOTYPE: $;$
2339 C_ARGS: aTHX_ coro, flags 3000 C_ARGS: aTHX_ coro, flags
… …
2370 3031
2371void 3032void
2372force_cctx () 3033force_cctx ()
2373 PROTOTYPE: 3034 PROTOTYPE:
2374 CODE: 3035 CODE:
2375 struct coro *coro = SvSTATE (coro_current);
2376 coro->cctx->idle_sp = 0; 3036 SvSTATE_current->cctx->idle_sp = 0;
2377 3037
2378void 3038void
2379swap_defsv (Coro::State self) 3039swap_defsv (Coro::State self)
2380 PROTOTYPE: $ 3040 PROTOTYPE: $
2381 ALIAS: 3041 ALIAS:
… …
2389 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3049 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2390 3050
2391 SV *tmp = *src; *src = *dst; *dst = tmp; 3051 SV *tmp = *src; *src = *dst; *dst = tmp;
2392 } 3052 }
2393 3053
3054
2394MODULE = Coro::State PACKAGE = Coro 3055MODULE = Coro::State PACKAGE = Coro
2395 3056
2396BOOT: 3057BOOT:
2397{ 3058{
2398 int i; 3059 int i;
2399 3060
2400 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2401 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3061 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2402 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3062 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2403 3063 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3064 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2404 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3065 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2405 SvREADONLY_on (coro_current); 3066 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3067 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3068 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3069
3070 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3071 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3072 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3073 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2406 3074
2407 coro_stash = gv_stashpv ("Coro", TRUE); 3075 coro_stash = gv_stashpv ("Coro", TRUE);
2408 3076
2409 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3077 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2410 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3078 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2418 3086
2419 { 3087 {
2420 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3088 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2421 3089
2422 coroapi.schedule = api_schedule; 3090 coroapi.schedule = api_schedule;
3091 coroapi.schedule_to = api_schedule_to;
2423 coroapi.cede = api_cede; 3092 coroapi.cede = api_cede;
2424 coroapi.cede_notself = api_cede_notself; 3093 coroapi.cede_notself = api_cede_notself;
2425 coroapi.ready = api_ready; 3094 coroapi.ready = api_ready;
2426 coroapi.is_ready = api_is_ready; 3095 coroapi.is_ready = api_is_ready;
2427 coroapi.nready = coro_nready; 3096 coroapi.nready = coro_nready;
2428 coroapi.current = coro_current; 3097 coroapi.current = coro_current;
2429 3098
2430 GCoroAPI = &coroapi; 3099 /*GCoroAPI = &coroapi;*/
2431 sv_setiv (sv, (IV)&coroapi); 3100 sv_setiv (sv, (IV)&coroapi);
2432 SvREADONLY_on (sv); 3101 SvREADONLY_on (sv);
2433 } 3102 }
2434} 3103}
2435 3104
2436void 3105void
3106terminate (...)
3107 CODE:
3108 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3109
3110void
2437schedule (...) 3111schedule (...)
2438 CODE: 3112 CODE:
2439 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3113 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3114
3115void
3116schedule_to (...)
3117 CODE:
3118 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3119
3120void
3121cede_to (...)
3122 CODE:
3123 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2440 3124
2441void 3125void
2442cede (...) 3126cede (...)
2443 CODE: 3127 CODE:
2444 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3128 CORO_EXECUTE_SLF_XS (slf_init_cede);
2445 3129
2446void 3130void
2447cede_notself (...) 3131cede_notself (...)
2448 CODE: 3132 CODE:
2449 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3133 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3134
3135void
3136_cancel (Coro::State self)
3137 CODE:
3138 coro_state_destroy (aTHX_ self);
3139 coro_call_on_destroy (aTHX_ self);
2450 3140
2451void 3141void
2452_set_current (SV *current) 3142_set_current (SV *current)
2453 PROTOTYPE: $ 3143 PROTOTYPE: $
2454 CODE: 3144 CODE:
… …
2499 CODE: 3189 CODE:
2500 RETVAL = coro_nready; 3190 RETVAL = coro_nready;
2501 OUTPUT: 3191 OUTPUT:
2502 RETVAL 3192 RETVAL
2503 3193
2504# for async_pool speedup
2505void 3194void
2506_pool_1 (SV *cb) 3195_pool_handler (...)
2507 CODE: 3196 CODE:
2508{ 3197 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2509 struct coro *coro = SvSTATE (coro_current);
2510 HV *hv = (HV *)SvRV (coro_current);
2511 AV *defav = GvAV (PL_defgv);
2512 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2513 AV *invoke_av;
2514 int i, len;
2515
2516 if (!invoke)
2517 {
2518 SV *old = PL_diehook;
2519 PL_diehook = 0;
2520 SvREFCNT_dec (old);
2521 croak ("\3async_pool terminate\2\n");
2522 }
2523
2524 SvREFCNT_dec (coro->saved_deffh);
2525 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2526
2527 hv_store (hv, "desc", sizeof ("desc") - 1,
2528 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2529
2530 invoke_av = (AV *)SvRV (invoke);
2531 len = av_len (invoke_av);
2532
2533 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2534
2535 if (len > 0)
2536 {
2537 av_fill (defav, len - 1);
2538 for (i = 0; i < len; ++i)
2539 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2540 }
2541}
2542 3198
2543void 3199void
2544_pool_2 (SV *cb) 3200async_pool (SV *cv, ...)
2545 CODE:
2546{
2547 struct coro *coro = SvSTATE (coro_current);
2548
2549 sv_setsv (cb, &PL_sv_undef);
2550
2551 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2552 coro->saved_deffh = 0;
2553
2554 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2555 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2556 {
2557 SV *old = PL_diehook;
2558 PL_diehook = 0;
2559 SvREFCNT_dec (old);
2560 croak ("\3async_pool terminate\2\n");
2561 }
2562
2563 av_clear (GvAV (PL_defgv));
2564 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2565 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2566
2567 coro->prio = 0;
2568
2569 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2570 api_trace (aTHX_ coro_current, 0);
2571
2572 av_push (av_async_pool, newSVsv (coro_current));
2573}
2574
2575
2576MODULE = Coro::State PACKAGE = Coro::AIO
2577
2578void
2579_get_state (SV *self)
2580 PROTOTYPE: $ 3201 PROTOTYPE: &@
2581 PPCODE: 3202 PPCODE:
2582{ 3203{
2583 AV *defav = GvAV (PL_defgv); 3204 HV *hv = (HV *)av_pop (av_async_pool);
2584 AV *av = newAV (); 3205 AV *av = newAV ();
3206 SV *cb = ST (0);
2585 int i; 3207 int i;
2586 SV *data_sv = newSV (sizeof (struct io_state));
2587 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2588 SvCUR_set (data_sv, sizeof (struct io_state));
2589 SvPOK_only (data_sv);
2590 3208
2591 data->errorno = errno; 3209 av_extend (av, items - 2);
2592 data->laststype = PL_laststype; 3210 for (i = 1; i < items; ++i)
2593 data->laststatval = PL_laststatval;
2594 data->statcache = PL_statcache;
2595
2596 av_extend (av, AvFILLp (defav) + 1 + 1);
2597
2598 for (i = 0; i <= AvFILLp (defav); ++i)
2599 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3211 av_push (av, SvREFCNT_inc_NN (ST (i)));
2600 3212
2601 av_push (av, data_sv); 3213 if ((SV *)hv == &PL_sv_undef)
2602
2603 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2604
2605 api_ready (aTHX_ self);
2606}
2607
2608void
2609_set_state (SV *state)
2610 PROTOTYPE: $
2611 PPCODE:
2612{
2613 AV *av = (AV *)SvRV (state);
2614 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2615 int i;
2616
2617 errno = data->errorno;
2618 PL_laststype = data->laststype;
2619 PL_laststatval = data->laststatval;
2620 PL_statcache = data->statcache;
2621
2622 EXTEND (SP, AvFILLp (av));
2623 for (i = 0; i < AvFILLp (av); ++i)
2624 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2625}
2626
2627
2628MODULE = Coro::State PACKAGE = Coro::AnyEvent
2629
2630BOOT:
2631 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2632
2633void
2634_schedule (...)
2635 CODE:
2636{
2637 static int incede;
2638
2639 api_cede_notself (aTHX);
2640
2641 ++incede;
2642 while (coro_nready >= incede && api_cede (aTHX))
2643 ;
2644
2645 sv_setsv (sv_activity, &PL_sv_undef);
2646 if (coro_nready >= incede)
2647 { 3214 {
2648 PUSHMARK (SP); 3215 PUSHMARK (SP);
3216 EXTEND (SP, 2);
3217 PUSHs (sv_Coro);
3218 PUSHs ((SV *)cv_pool_handler);
2649 PUTBACK; 3219 PUTBACK;
2650 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3220 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2651 SPAGAIN; 3221 SPAGAIN;
3222
3223 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2652 } 3224 }
2653 3225
2654 --incede; 3226 {
3227 struct coro *coro = SvSTATE_hv (hv);
3228
3229 assert (!coro->invoke_cb);
3230 assert (!coro->invoke_av);
3231 coro->invoke_cb = SvREFCNT_inc (cb);
3232 coro->invoke_av = av;
3233 }
3234
3235 api_ready (aTHX_ (SV *)hv);
3236
3237 if (GIMME_V != G_VOID)
3238 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3239 else
3240 SvREFCNT_dec (hv);
2655} 3241}
3242
3243SV *
3244rouse_cb ()
3245 PROTOTYPE:
3246 CODE:
3247 RETVAL = coro_new_rouse_cb (aTHX);
3248 OUTPUT:
3249 RETVAL
3250
3251void
3252rouse_wait (...)
3253 PROTOTYPE: ;$
3254 PPCODE:
3255 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2656 3256
2657 3257
2658MODULE = Coro::State PACKAGE = PerlIO::cede 3258MODULE = Coro::State PACKAGE = PerlIO::cede
2659 3259
2660BOOT: 3260BOOT:
2661 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3261 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2662 3262
3263
2663MODULE = Coro::State PACKAGE = Coro::Semaphore 3264MODULE = Coro::State PACKAGE = Coro::Semaphore
2664 3265
2665SV * 3266SV *
2666new (SV *klass, SV *count_ = 0) 3267new (SV *klass, SV *count = 0)
2667 CODE: 3268 CODE:
2668{ 3269 RETVAL = sv_bless (
2669 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3270 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2670 AV *av = newAV (); 3271 GvSTASH (CvGV (cv))
2671 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3272 );
2672 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3273 OUTPUT:
2673} 3274 RETVAL
3275
3276# helper for Coro::Channel
3277SV *
3278_alloc (int count)
3279 CODE:
3280 RETVAL = coro_waitarray_new (aTHX_ count);
2674 OUTPUT: 3281 OUTPUT:
2675 RETVAL 3282 RETVAL
2676 3283
2677SV * 3284SV *
2678count (SV *self) 3285count (SV *self)
… …
2684void 3291void
2685up (SV *self, int adjust = 1) 3292up (SV *self, int adjust = 1)
2686 ALIAS: 3293 ALIAS:
2687 adjust = 1 3294 adjust = 1
2688 CODE: 3295 CODE:
2689 coro_semaphore_adjust ((AV *)SvRV (self), ix ? adjust : 1); 3296 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2690 3297
2691void 3298void
2692down (SV *self) 3299down (...)
2693 CODE: 3300 CODE:
2694 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3301 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3302
3303void
3304wait (...)
3305 CODE:
3306 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2695 3307
2696void 3308void
2697try (SV *self) 3309try (SV *self)
2698 PPCODE: 3310 PPCODE:
2699{ 3311{
… …
2711 XSRETURN_NO; 3323 XSRETURN_NO;
2712} 3324}
2713 3325
2714void 3326void
2715waiters (SV *self) 3327waiters (SV *self)
2716 CODE: 3328 PPCODE:
2717{ 3329{
2718 AV *av = (AV *)SvRV (self); 3330 AV *av = (AV *)SvRV (self);
3331 int wcount = AvFILLp (av) + 1 - 1;
2719 3332
2720 if (GIMME_V == G_SCALAR) 3333 if (GIMME_V == G_SCALAR)
2721 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3334 XPUSHs (sv_2mortal (newSViv (wcount)));
2722 else 3335 else
2723 { 3336 {
2724 int i; 3337 int i;
2725 EXTEND (SP, AvFILLp (av) + 1 - 1); 3338 EXTEND (SP, wcount);
2726 for (i = 1; i <= AvFILLp (av); ++i) 3339 for (i = 1; i <= wcount; ++i)
2727 PUSHs (newSVsv (AvARRAY (av)[i])); 3340 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2728 } 3341 }
2729} 3342}
2730 3343
3344MODULE = Coro::State PACKAGE = Coro::Signal
3345
3346SV *
3347new (SV *klass)
3348 CODE:
3349 RETVAL = sv_bless (
3350 coro_waitarray_new (aTHX_ 0),
3351 GvSTASH (CvGV (cv))
3352 );
3353 OUTPUT:
3354 RETVAL
3355
3356void
3357wait (...)
3358 CODE:
3359 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3360
3361void
3362broadcast (SV *self)
3363 CODE:
3364{
3365 AV *av = (AV *)SvRV (self);
3366 coro_signal_wake (aTHX_ av, AvFILLp (av));
3367}
3368
3369void
3370send (SV *self)
3371 CODE:
3372{
3373 AV *av = (AV *)SvRV (self);
3374
3375 if (AvFILLp (av))
3376 coro_signal_wake (aTHX_ av, 1);
3377 else
3378 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3379}
3380
3381IV
3382awaited (SV *self)
3383 CODE:
3384 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3385 OUTPUT:
3386 RETVAL
3387
3388
3389MODULE = Coro::State PACKAGE = Coro::AnyEvent
3390
3391BOOT:
3392 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3393
3394void
3395_schedule (...)
3396 CODE:
3397{
3398 static int incede;
3399
3400 api_cede_notself (aTHX);
3401
3402 ++incede;
3403 while (coro_nready >= incede && api_cede (aTHX))
3404 ;
3405
3406 sv_setsv (sv_activity, &PL_sv_undef);
3407 if (coro_nready >= incede)
3408 {
3409 PUSHMARK (SP);
3410 PUTBACK;
3411 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3412 }
3413
3414 --incede;
3415}
3416
3417
3418MODULE = Coro::State PACKAGE = Coro::AIO
3419
3420void
3421_register (char *target, char *proto, SV *req)
3422 CODE:
3423{
3424 CV *req_cv = coro_sv_2cv (aTHX_ req);
3425 /* newXSproto doesn't return the CV on 5.8 */
3426 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3427 sv_setpv ((SV *)slf_cv, proto);
3428 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3429}
3430

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