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Comparing Coro/Coro/State.xs (file contents):
Revision 1.269 by root, Fri Nov 14 06:50:11 2008 UTC vs.
Revision 1.315 by root, Thu Nov 20 05:25:17 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
100 106
101/* 5.8.7 */ 107/* 5.8.7 */
102#ifndef SvRV_set 108#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 109# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 110#endif
… …
117#endif 123#endif
118 124
119/* The next macros try to return the current stack pointer, in an as 125/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 126 * portable way as possible. */
121#if __GNUC__ >= 4 127#if __GNUC__ >= 4
128# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 129# define STACKLEVEL __builtin_frame_address (0)
123#else 130#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 131# define dSTACKLEVEL volatile void *stacklevel
132# define STACKLEVEL ((void *)&stacklevel)
125#endif 133#endif
126 134
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 135#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 136
129#if __GNUC__ >= 3 137#if __GNUC__ >= 3
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 148#define expect_true(expr) expect ((expr) != 0, 1)
141 149
142#define NOINLINE attribute ((noinline)) 150#define NOINLINE attribute ((noinline))
143 151
144#include "CoroAPI.h" 152#include "CoroAPI.h"
153#define GCoroAPI (&coroapi) /* very sneaky */
145 154
146#ifdef USE_ITHREADS 155#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 156# if CORO_PTHREAD
152static void *coro_thx; 157static void *coro_thx;
153# endif 158# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 159#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 160
177static double (*nvtime)(); /* so why doesn't it take void? */ 161static double (*nvtime)(); /* so why doesn't it take void? */
162
163/* we hijack an hopefully unused CV flag for our purposes */
164#define CVf_SLF 0x4000
165static OP *pp_slf (pTHX);
178 166
179static U32 cctx_gen; 167static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 171static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187
188struct transfer_args
189{
190 struct coro *prev, *next;
191};
192 174
193static GV *irsgv; /* $/ */ 175static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 176static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 177static SV *rv_diehook;
196static SV *rv_warnhook; 178static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */ 179static HV *hv_sig; /* %SIG */
198 180
199/* async_pool helper stuff */ 181/* async_pool helper stuff */
200static SV *sv_pool_rss; 182static SV *sv_pool_rss;
201static SV *sv_pool_size; 183static SV *sv_pool_size;
184static SV *sv_async_pool_idle;
202static AV *av_async_pool; 185static AV *av_async_pool;
186static SV *sv_Coro;
187static CV *cv_pool_handler;
188static CV *cv_coro_state_new;
203 189
204/* Coro::AnyEvent */ 190/* Coro::AnyEvent */
205static SV *sv_activity; 191static SV *sv_activity;
206 192
207static struct coro_cctx *cctx_first; 193static struct coro_cctx *cctx_first;
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 201 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 202 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 203};
218 204
219/* this is a structure representing a c-level coroutine */ 205/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 206typedef struct coro_cctx
207{
221 struct coro_cctx *next; 208 struct coro_cctx *next;
222 209
223 /* the stack */ 210 /* the stack */
224 void *sptr; 211 void *sptr;
225 size_t ssize; 212 size_t ssize;
… …
243 CF_NEW = 0x0004, /* has never been switched to */ 230 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 231 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245}; 232};
246 233
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 234/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 235typedef struct
236{
249 SV *defsv; 237 SV *defsv;
250 AV *defav; 238 AV *defav;
251 SV *errsv; 239 SV *errsv;
252 SV *irsgv; 240 SV *irsgv;
253#define VAR(name,type) type name; 241#define VAR(name,type) type name;
… …
257 245
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 246#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 247
260/* this is a structure representing a perl-level coroutine */ 248/* this is a structure representing a perl-level coroutine */
261struct coro { 249struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 250 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 251 coro_cctx *cctx;
264 252
265 /* process data */ 253 /* state data */
254 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 255 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 256 perl_slots *slot; /* basically the saved sp */
268 257
258 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 259 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 260 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 261 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 262 HV *hv; /* the perl hash associated with this coro, if any */
263 void (*on_destroy)(pTHX_ struct coro *coro);
273 264
274 /* statistics */ 265 /* statistics */
275 int usecount; /* number of transfers to this coro */ 266 int usecount; /* number of transfers to this coro */
276 267
277 /* coro process data */ 268 /* coro process data */
278 int prio; 269 int prio;
279 SV *throw; /* exception to be thrown */ 270 SV *except; /* exception to be thrown */
271 SV *rouse_cb;
280 272
281 /* async_pool */ 273 /* async_pool */
282 SV *saved_deffh; 274 SV *saved_deffh;
275 SV *invoke_cb;
276 AV *invoke_av;
283 277
284 /* linked list */ 278 /* linked list */
285 struct coro *next, *prev; 279 struct coro *next, *prev;
286}; 280};
287 281
288typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 283typedef struct coro *Coro__State_or_hashref;
284
285/* the following variables are effectively part of the perl context */
286/* and get copied between struct coro and these variables */
287/* the mainr easonw e don't support windows process emulation */
288static struct CoroSLF slf_frame; /* the current slf frame */
290 289
291/** Coro ********************************************************************/ 290/** Coro ********************************************************************/
292 291
293#define PRIO_MAX 3 292#define PRIO_MAX 3
294#define PRIO_HIGH 1 293#define PRIO_HIGH 1
… …
299 298
300/* for Coro.pm */ 299/* for Coro.pm */
301static SV *coro_current; 300static SV *coro_current;
302static SV *coro_readyhook; 301static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 302static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
304static int coro_nready; 303static CV *cv_coro_run, *cv_coro_terminate;
305static struct coro *coro_first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready
306 306
307/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
308 308
309static SV * 309static SV *
310coro_get_sv (pTHX_ const char *name, int create) 310coro_get_sv (pTHX_ const char *name, int create)
… …
332#if PERL_VERSION_ATLEAST (5,10,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create); 334 get_hv (name, create);
335#endif 335#endif
336 return get_hv (name, create); 336 return get_hv (name, create);
337}
338
339/* may croak */
340INLINE CV *
341coro_sv_2cv (pTHX_ SV *sv)
342{
343 HV *st;
344 GV *gvp;
345 return sv_2cv (sv, &st, &gvp, 0);
337} 346}
338 347
339static AV * 348static AV *
340coro_clone_padlist (pTHX_ CV *cv) 349coro_clone_padlist (pTHX_ CV *cv)
341{ 350{
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 404 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 405
397 return 0; 406 return 0;
398} 407}
399 408
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 409#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 410#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 411
403static MGVTBL coro_cv_vtbl = { 412static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 413 0, 0, 0, 0,
405 coro_cv_free 414 coro_cv_free
406}; 415};
407 416
417#define CORO_MAGIC_NN(sv, type) \
418 (expect_true (SvMAGIC (sv)->mg_type == type) \
419 ? SvMAGIC (sv) \
420 : mg_find (sv, type))
421
408#define CORO_MAGIC(sv, type) \ 422#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 423 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 424 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 425 : 0)
414 426
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 427#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 428#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417 429
418INLINE struct coro * 430INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 431SvSTATE_ (pTHX_ SV *coro)
420{ 432{
421 HV *stash; 433 HV *stash;
… …
438 mg = CORO_MAGIC_state (coro); 450 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 451 return (struct coro *)mg->mg_ptr;
440} 452}
441 453
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 454#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
455
456/* faster than SvSTATE, but expects a coroutine hv */
457#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
458#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 459
444/* the next two functions merely cache the padlists */ 460/* the next two functions merely cache the padlists */
445static void 461static void
446get_padlist (pTHX_ CV *cv) 462get_padlist (pTHX_ CV *cv)
447{ 463{
… …
453 else 469 else
454 { 470 {
455#if CORO_PREFER_PERL_FUNCTIONS 471#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 472 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 473 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 474 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 475 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 476 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 477 SvREFCNT_dec (cp);
462#else 478#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 479 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
514 CvPADLIST (cv) = (AV *)POPs; 530 CvPADLIST (cv) = (AV *)POPs;
515 } 531 }
516 532
517 PUTBACK; 533 PUTBACK;
518 } 534 }
535
536 slf_frame = c->slf_frame;
537 CORO_THROW = c->except;
519} 538}
520 539
521static void 540static void
522save_perl (pTHX_ Coro__State c) 541save_perl (pTHX_ Coro__State c)
523{ 542{
543 c->except = CORO_THROW;
544 c->slf_frame = slf_frame;
545
524 { 546 {
525 dSP; 547 dSP;
526 I32 cxix = cxstack_ix; 548 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 549 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 550 PERL_SI *top_si = PL_curstackinfo;
… …
595 #undef VAR 617 #undef VAR
596 } 618 }
597} 619}
598 620
599/* 621/*
600 * allocate various perl stacks. This is an exact copy 622 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 623 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 624 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 625 * not usually need a lot of stackspace.
604 */ 626 */
605#if CORO_PREFER_PERL_FUNCTIONS 627#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 628# define coro_init_stacks(thx) init_stacks ()
607#else 629#else
608static void 630static void
609coro_init_stacks (pTHX) 631coro_init_stacks (pTHX)
610{ 632{
611 PL_curstackinfo = new_stackinfo(32, 8); 633 PL_curstackinfo = new_stackinfo(32, 8);
… …
674#if !PERL_VERSION_ATLEAST (5,10,0) 696#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 697 Safefree (PL_retstack);
676#endif 698#endif
677} 699}
678 700
701#define CORO_RSS \
702 rss += sizeof (SYM (curstackinfo)); \
703 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
705 rss += SYM (tmps_max) * sizeof (SV *); \
706 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
707 rss += SYM (scopestack_max) * sizeof (I32); \
708 rss += SYM (savestack_max) * sizeof (ANY);
709
679static size_t 710static size_t
680coro_rss (pTHX_ struct coro *coro) 711coro_rss (pTHX_ struct coro *coro)
681{ 712{
682 size_t rss = sizeof (*coro); 713 size_t rss = sizeof (*coro);
683 714
684 if (coro->mainstack) 715 if (coro->mainstack)
685 { 716 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 717 if (coro->flags & CF_RUNNING)
690 { 718 {
691 slot = &tmp_slot; 719 #define SYM(sym) PL_ ## sym
692 720 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 721 #undef SYM
696 } 722 }
697 else 723 else
698 slot = coro->slot;
699
700 if (slot)
701 { 724 {
702 rss += sizeof (slot->curstackinfo); 725 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 726 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 727 #undef SYM
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 } 728 }
714 } 729 }
715 730
716 return rss; 731 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_slf calling us */
722#define SLF_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_slf */
724#define SLF_TAIL slf_tail (aTHX)
725
726INLINE void
727slf_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744} 732}
745 733
746/** coroutine stack handling ************************************************/ 734/** coroutine stack handling ************************************************/
747 735
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 736static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
834 822
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 823 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 824}
837 825
838static void 826static void
827prepare_nop (pTHX_ struct coro_transfer_args *ta)
828{
829 /* kind of mega-hacky, but works */
830 ta->next = ta->prev = (struct coro *)ta;
831}
832
833static int
834slf_check_nop (pTHX_ struct CoroSLF *frame)
835{
836 return 0;
837}
838
839static UNOP coro_setup_op;
840
841static void NOINLINE /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 842coro_setup (pTHX_ struct coro *coro)
840{ 843{
841 /* 844 /*
842 * emulate part of the perl startup here. 845 * emulate part of the perl startup here.
843 */ 846 */
… …
870 { 873 {
871 dSP; 874 dSP;
872 UNOP myop; 875 UNOP myop;
873 876
874 Zero (&myop, 1, UNOP); 877 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 878 myop.op_next = Nullop;
879 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 880 myop.op_flags = OPf_WANT_VOID;
877 881
878 PUSHMARK (SP); 882 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 883 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 884 PUTBACK;
881 PL_op = (OP *)&myop; 885 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 886 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 887 }
885 888
886 /* this newly created coroutine might be run on an existing cctx which most 889 /* this newly created coroutine might be run on an existing cctx which most
887 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 890 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 * so we have to emulate entering pp_set_stacklevel here.
889 */ 891 */
890 SLF_HEAD; 892 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
893 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
894
895 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
896 coro_setup_op.op_next = PL_op;
897 coro_setup_op.op_type = OP_CUSTOM;
898 coro_setup_op.op_ppaddr = pp_slf;
899 /* no flags etc. required, as an init function won't be called */
900
901 PL_op = (OP *)&coro_setup_op;
902
903 /* copy throw, in case it was set before coro_setup */
904 CORO_THROW = coro->except;
891} 905}
892 906
893static void 907static void
894coro_destruct (pTHX_ struct coro *coro) 908coro_destruct (pTHX_ struct coro *coro)
895{ 909{
… …
919 933
920 SvREFCNT_dec (PL_diehook); 934 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook); 935 SvREFCNT_dec (PL_warnhook);
922 936
923 SvREFCNT_dec (coro->saved_deffh); 937 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 938 SvREFCNT_dec (coro->rouse_cb);
939 SvREFCNT_dec (coro->invoke_cb);
940 SvREFCNT_dec (coro->invoke_av);
925 941
926 coro_destruct_stacks (aTHX); 942 coro_destruct_stacks (aTHX);
927} 943}
928 944
929INLINE void 945INLINE void
… …
939static int 955static int
940runops_trace (pTHX) 956runops_trace (pTHX)
941{ 957{
942 COP *oldcop = 0; 958 COP *oldcop = 0;
943 int oldcxix = -2; 959 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 960 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx; 961 coro_cctx *cctx = coro->cctx;
946 962
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 963 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 964 {
949 PERL_ASYNC_CHECK (); 965 PERL_ASYNC_CHECK ();
… …
1016 SAVETMPS; 1032 SAVETMPS;
1017 EXTEND (SP, 3); 1033 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1034 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1035 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1036 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1037 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1038 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1039 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1040 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1041 SPAGAIN;
1026 FREETMPS; 1042 FREETMPS;
… …
1058 1074
1059 TAINT_NOT; 1075 TAINT_NOT;
1060 return 0; 1076 return 0;
1061} 1077}
1062 1078
1079static struct coro_cctx *cctx_ssl_cctx;
1080static struct CoroSLF cctx_ssl_frame;
1081
1063static void 1082static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1083slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1084{
1066 ta->prev = (struct coro *)cctx; 1085 ta->prev = (struct coro *)cctx_ssl_cctx;
1067 ta->next = 0; 1086 ta->next = 0;
1068} 1087}
1069 1088
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1089static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1090slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */ 1091{
1073/* also initialises PL_top_env */ 1092 *frame = cctx_ssl_frame;
1093
1094 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1095}
1096
1097/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1074static void NOINLINE 1098static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx) 1099cctx_prepare (pTHX_ coro_cctx *cctx)
1076{ 1100{
1077 dSP;
1078 UNOP myop;
1079
1080 PL_top_env = &PL_start_env; 1101 PL_top_env = &PL_start_env;
1081 1102
1082 if (cctx->flags & CC_TRACE) 1103 if (cctx->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1104 PL_runops = runops_trace;
1084 1105
1085 Zero (&myop, 1, UNOP); 1106 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1107 * that can lead to creation of a new cctx */
1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1108 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1109 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1088 1110
1089 PUSHMARK (SP); 1111 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1112 cctx_ssl_cctx = cctx;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1113 cctx_ssl_frame = slf_frame;
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1114
1093 PUTBACK; 1115 slf_frame.prepare = slf_prepare_set_stacklevel;
1094 PL_op = (OP *)&myop; 1116 slf_frame.check = slf_check_set_stacklevel;
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096 SPAGAIN;
1097} 1117}
1098 1118
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1119/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1120INLINE void
1101transfer_tail (pTHX) 1121transfer_tail (pTHX)
1102{ 1122{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX); 1123 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118} 1124}
1119 1125
1120/* 1126/*
1121 * this is a _very_ stripped down perl interpreter ;) 1127 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1128 */
… …
1129# endif 1135# endif
1130#endif 1136#endif
1131 { 1137 {
1132 dTHX; 1138 dTHX;
1133 1139
1134 /* we are the alternative tail to pp_set_stacklevel */ 1140 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1141 /* not doing so will re-execute it, which is exactly what we want */
1136 SLF_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1142 /* PL_nop = PL_nop->op_next */
1140 1143
1141 /* inject a fake subroutine call to cctx_init */ 1144 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1145 cctx_prepare (aTHX_ (coro_cctx *)arg);
1143 1146
1144 /* cctx_run is the alternative tail of transfer() */ 1147 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1148 transfer_tail (aTHX);
1146 1149
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1150 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1151 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1152 perl_run (PL_curinterp);
1153 /*
1154 * Unfortunately, there is no way to get at the return values of the
1155 * coro body here, as perl_run destroys these
1156 */
1150 1157
1151 /* 1158 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1159 * If perl-run returns we assume exit() was being called or the coro
1153 * fell off the end, which seems to be the only valid (non-bug) 1160 * fell off the end, which seems to be the only valid (non-bug)
1154 * reason for perl_run to return. We try to exit by jumping to the 1161 * reason for perl_run to return. We try to exit by jumping to the
… …
1305/** coroutine switching *****************************************************/ 1312/** coroutine switching *****************************************************/
1306 1313
1307static void 1314static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1315transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1316{
1317 /* TODO: throwing up here is considered harmful */
1318
1310 if (expect_true (prev != next)) 1319 if (expect_true (prev != next))
1311 { 1320 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1321 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1322 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1314 1323
1315 if (expect_false (next->flags & CF_RUNNING)) 1324 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1325 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317 1326
1318 if (expect_false (next->flags & CF_DESTROYED)) 1327 if (expect_false (next->flags & CF_DESTROYED))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1328 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320 1329
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1330#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1331 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1332 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1333#endif
1325 } 1334 }
1326} 1335}
1327 1336
1328/* always use the TRANSFER macro */ 1337/* always use the TRANSFER macro */
1329static void NOINLINE 1338static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1339transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1340{
1332 dSTACKLEVEL; 1341 dSTACKLEVEL;
1333 1342
1334 /* sometimes transfer is only called to set idle_sp */ 1343 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1344 if (expect_false (!next))
1336 { 1345 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1346 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1347 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1348 }
1340 else if (expect_true (prev != next)) 1349 else if (expect_true (prev != next))
1341 { 1350 {
1342 coro_cctx *prev__cctx; 1351 coro_cctx *prev__cctx;
… …
1349 prev->flags |= CF_RUNNING; 1358 prev->flags |= CF_RUNNING;
1350 } 1359 }
1351 1360
1352 prev->flags &= ~CF_RUNNING; 1361 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1362 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1363
1357 /* first get rid of the old state */ 1364 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1365 save_perl (aTHX_ prev);
1359 1366
1360 if (expect_false (next->flags & CF_NEW)) 1367 if (expect_false (next->flags & CF_NEW))
… …
1369 1376
1370 prev__cctx = prev->cctx; 1377 prev__cctx = prev->cctx;
1371 1378
1372 /* possibly untie and reuse the cctx */ 1379 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1380 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1381 prev__cctx->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1382 && !(prev__cctx->flags & CC_TRACE)
1376 && !force_cctx 1383 && !force_cctx
1377 )) 1384 ))
1378 { 1385 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1386 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
… …
1393 ++next->usecount; 1400 ++next->usecount;
1394 1401
1395 if (expect_true (!next->cctx)) 1402 if (expect_true (!next->cctx))
1396 next->cctx = cctx_get (aTHX); 1403 next->cctx = cctx_get (aTHX);
1397 1404
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1399 transfer_next = next;
1400
1401 if (expect_false (prev__cctx != next->cctx)) 1405 if (expect_false (prev__cctx != next->cctx))
1402 { 1406 {
1403 prev__cctx->top_env = PL_top_env; 1407 prev__cctx->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1408 PL_top_env = next->cctx->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1409 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
… …
1418coro_state_destroy (pTHX_ struct coro *coro) 1422coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1423{
1420 if (coro->flags & CF_DESTROYED) 1424 if (coro->flags & CF_DESTROYED)
1421 return 0; 1425 return 0;
1422 1426
1427 if (coro->on_destroy)
1428 coro->on_destroy (aTHX_ coro);
1429
1423 coro->flags |= CF_DESTROYED; 1430 coro->flags |= CF_DESTROYED;
1424 1431
1425 if (coro->flags & CF_READY) 1432 if (coro->flags & CF_READY)
1426 { 1433 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1434 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1435 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1436 --coro_nready;
1431 UNLOCK;
1432 } 1437 }
1433 else 1438 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1439 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1440
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1441 if (coro->mainstack && coro->mainstack != main_mainstack)
1437 { 1442 {
1438 struct coro temp; 1443 struct coro temp;
1439 1444
1440 if (coro->flags & CF_RUNNING) 1445 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442 1446
1443 save_perl (aTHX_ &temp); 1447 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro); 1448 load_perl (aTHX_ coro);
1445 1449
1446 coro_destruct (aTHX_ coro); 1450 coro_destruct (aTHX_ coro);
… …
1449 1453
1450 coro->slot = 0; 1454 coro->slot = 0;
1451 } 1455 }
1452 1456
1453 cctx_destroy (coro->cctx); 1457 cctx_destroy (coro->cctx);
1458 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1459 SvREFCNT_dec (coro->args);
1460 SvREFCNT_dec (CORO_THROW);
1455 1461
1456 if (coro->next) coro->next->prev = coro->prev; 1462 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1463 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1464 if (coro == coro_first) coro_first = coro->next;
1459 1465
… …
1497# define MGf_DUP 0 1503# define MGf_DUP 0
1498#endif 1504#endif
1499}; 1505};
1500 1506
1501static void 1507static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1508prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1509{
1504 ta->prev = SvSTATE (prev_sv); 1510 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1511 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1512 TRANSFER_CHECK (*ta);
1507} 1513}
1508 1514
1509static void 1515static void
1510api_transfer (SV *prev_sv, SV *next_sv) 1516api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1517{
1512 dTHX;
1513 struct transfer_args ta; 1518 struct coro_transfer_args ta;
1514 1519
1515 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1520 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1516 TRANSFER (ta, 1); 1521 TRANSFER (ta, 1);
1517} 1522}
1518 1523
1524/*****************************************************************************/
1525/* gensub: simple closure generation utility */
1526
1527#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1528
1529/* create a closure from XS, returns a code reference */
1530/* the arg can be accessed via GENSUB_ARG from the callback */
1531/* the callback must use dXSARGS/XSRETURN */
1532static SV *
1533gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1534{
1535 CV *cv = (CV *)newSV (0);
1536
1537 sv_upgrade ((SV *)cv, SVt_PVCV);
1538
1539 CvANON_on (cv);
1540 CvISXSUB_on (cv);
1541 CvXSUB (cv) = xsub;
1542 GENSUB_ARG = arg;
1543
1544 return newRV_noinc ((SV *)cv);
1545}
1546
1519/** Coro ********************************************************************/ 1547/** Coro ********************************************************************/
1520 1548
1521static void 1549INLINE void
1522coro_enq (pTHX_ SV *coro_sv) 1550coro_enq (pTHX_ struct coro *coro)
1523{ 1551{
1524 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1552 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1525} 1553}
1526 1554
1527static SV * 1555INLINE SV *
1528coro_deq (pTHX) 1556coro_deq (pTHX)
1529{ 1557{
1530 int prio; 1558 int prio;
1531 1559
1532 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1560 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1535 1563
1536 return 0; 1564 return 0;
1537} 1565}
1538 1566
1539static int 1567static int
1540api_ready (SV *coro_sv) 1568api_ready (pTHX_ SV *coro_sv)
1541{ 1569{
1542 dTHX;
1543 struct coro *coro; 1570 struct coro *coro;
1544 SV *sv_hook; 1571 SV *sv_hook;
1545 void (*xs_hook)(void); 1572 void (*xs_hook)(void);
1546 1573
1547 if (SvROK (coro_sv)) 1574 if (SvROK (coro_sv))
… …
1552 if (coro->flags & CF_READY) 1579 if (coro->flags & CF_READY)
1553 return 0; 1580 return 0;
1554 1581
1555 coro->flags |= CF_READY; 1582 coro->flags |= CF_READY;
1556 1583
1557 LOCK;
1558
1559 sv_hook = coro_nready ? 0 : coro_readyhook; 1584 sv_hook = coro_nready ? 0 : coro_readyhook;
1560 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1585 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1561 1586
1562 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1587 coro_enq (aTHX_ coro);
1563 ++coro_nready; 1588 ++coro_nready;
1564 1589
1565 UNLOCK;
1566
1567 if (sv_hook) 1590 if (sv_hook)
1568 { 1591 {
1569 dSP; 1592 dSP;
1570 1593
1571 ENTER; 1594 ENTER;
1572 SAVETMPS; 1595 SAVETMPS;
1573 1596
1574 PUSHMARK (SP); 1597 PUSHMARK (SP);
1575 PUTBACK; 1598 PUTBACK;
1576 call_sv (sv_hook, G_DISCARD); 1599 call_sv (sv_hook, G_VOID | G_DISCARD);
1577 SPAGAIN;
1578 1600
1579 FREETMPS; 1601 FREETMPS;
1580 LEAVE; 1602 LEAVE;
1581 } 1603 }
1582 1604
… …
1585 1607
1586 return 1; 1608 return 1;
1587} 1609}
1588 1610
1589static int 1611static int
1590api_is_ready (SV *coro_sv) 1612api_is_ready (pTHX_ SV *coro_sv)
1591{ 1613{
1592 dTHX;
1593
1594 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1614 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1595} 1615}
1596 1616
1597INLINE void 1617INLINE void
1598prepare_schedule (pTHX_ struct transfer_args *ta) 1618prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1599{ 1619{
1600 SV *prev_sv, *next_sv; 1620 SV *prev_sv, *next_sv;
1601 1621
1602 for (;;) 1622 for (;;)
1603 { 1623 {
1604 LOCK;
1605 next_sv = coro_deq (aTHX); 1624 next_sv = coro_deq (aTHX);
1606 1625
1607 /* nothing to schedule: call the idle handler */ 1626 /* nothing to schedule: call the idle handler */
1608 if (expect_false (!next_sv)) 1627 if (expect_false (!next_sv))
1609 { 1628 {
1610 dSP; 1629 dSP;
1611 UNLOCK;
1612 1630
1613 ENTER; 1631 ENTER;
1614 SAVETMPS; 1632 SAVETMPS;
1615 1633
1616 PUSHMARK (SP); 1634 PUSHMARK (SP);
1617 PUTBACK; 1635 PUTBACK;
1618 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1636 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1619 SPAGAIN;
1620 1637
1621 FREETMPS; 1638 FREETMPS;
1622 LEAVE; 1639 LEAVE;
1623 continue; 1640 continue;
1624 } 1641 }
1625 1642
1626 ta->next = SvSTATE (next_sv); 1643 ta->next = SvSTATE_hv (next_sv);
1627 1644
1628 /* cannot transfer to destroyed coros, skip and look for next */ 1645 /* cannot transfer to destroyed coros, skip and look for next */
1629 if (expect_false (ta->next->flags & CF_DESTROYED)) 1646 if (expect_false (ta->next->flags & CF_DESTROYED))
1630 { 1647 {
1631 UNLOCK;
1632 SvREFCNT_dec (next_sv); 1648 SvREFCNT_dec (next_sv);
1633 /* coro_nready has already been taken care of by destroy */ 1649 /* coro_nready has already been taken care of by destroy */
1634 continue; 1650 continue;
1635 } 1651 }
1636 1652
1637 --coro_nready; 1653 --coro_nready;
1638 UNLOCK;
1639 break; 1654 break;
1640 } 1655 }
1641 1656
1642 /* free this only after the transfer */ 1657 /* free this only after the transfer */
1643 prev_sv = SvRV (coro_current); 1658 prev_sv = SvRV (coro_current);
1644 ta->prev = SvSTATE (prev_sv); 1659 ta->prev = SvSTATE_hv (prev_sv);
1645 TRANSFER_CHECK (*ta); 1660 TRANSFER_CHECK (*ta);
1646 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1661 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1647 ta->next->flags &= ~CF_READY; 1662 ta->next->flags &= ~CF_READY;
1648 SvRV_set (coro_current, next_sv); 1663 SvRV_set (coro_current, next_sv);
1649 1664
1650 LOCK;
1651 free_coro_mortal (aTHX); 1665 free_coro_mortal (aTHX);
1652 coro_mortal = prev_sv; 1666 coro_mortal = prev_sv;
1653 UNLOCK;
1654} 1667}
1655 1668
1656INLINE void 1669INLINE void
1657prepare_cede (pTHX_ struct transfer_args *ta) 1670prepare_cede (pTHX_ struct coro_transfer_args *ta)
1658{ 1671{
1659 api_ready (coro_current); 1672 api_ready (aTHX_ coro_current);
1660 prepare_schedule (aTHX_ ta); 1673 prepare_schedule (aTHX_ ta);
1661} 1674}
1662 1675
1663static void 1676INLINE void
1664prepare_cede_notself (pTHX_ struct transfer_args *ta) 1677prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1665{ 1678{
1666 SV *prev = SvRV (coro_current); 1679 SV *prev = SvRV (coro_current);
1667 1680
1668 if (coro_nready) 1681 if (coro_nready)
1669 { 1682 {
1670 prepare_schedule (aTHX_ ta); 1683 prepare_schedule (aTHX_ ta);
1671 api_ready (prev); 1684 api_ready (aTHX_ prev);
1672 } 1685 }
1673 else 1686 else
1674 ta->prev = ta->next = SvSTATE (prev); 1687 prepare_nop (aTHX_ ta);
1675} 1688}
1676 1689
1677static void 1690static void
1678api_schedule (void) 1691api_schedule (pTHX)
1679{ 1692{
1680 dTHX;
1681 struct transfer_args ta; 1693 struct coro_transfer_args ta;
1682 1694
1683 prepare_schedule (aTHX_ &ta); 1695 prepare_schedule (aTHX_ &ta);
1684 TRANSFER (ta, 1); 1696 TRANSFER (ta, 1);
1685} 1697}
1686 1698
1687static int 1699static int
1688api_cede (void) 1700api_cede (pTHX)
1689{ 1701{
1690 dTHX;
1691 struct transfer_args ta; 1702 struct coro_transfer_args ta;
1692 1703
1693 prepare_cede (aTHX_ &ta); 1704 prepare_cede (aTHX_ &ta);
1694 1705
1695 if (expect_true (ta.prev != ta.next)) 1706 if (expect_true (ta.prev != ta.next))
1696 { 1707 {
… …
1700 else 1711 else
1701 return 0; 1712 return 0;
1702} 1713}
1703 1714
1704static int 1715static int
1705api_cede_notself (void) 1716api_cede_notself (pTHX)
1706{ 1717{
1707 if (coro_nready) 1718 if (coro_nready)
1708 { 1719 {
1709 dTHX;
1710 struct transfer_args ta; 1720 struct coro_transfer_args ta;
1711 1721
1712 prepare_cede_notself (aTHX_ &ta); 1722 prepare_cede_notself (aTHX_ &ta);
1713 TRANSFER (ta, 1); 1723 TRANSFER (ta, 1);
1714 return 1; 1724 return 1;
1715 } 1725 }
1716 else 1726 else
1717 return 0; 1727 return 0;
1718} 1728}
1719 1729
1720static void 1730static void
1721api_trace (SV *coro_sv, int flags) 1731api_trace (pTHX_ SV *coro_sv, int flags)
1722{ 1732{
1723 dTHX;
1724 struct coro *coro = SvSTATE (coro_sv); 1733 struct coro *coro = SvSTATE (coro_sv);
1725 1734
1726 if (flags & CC_TRACE) 1735 if (flags & CC_TRACE)
1727 { 1736 {
1728 if (!coro->cctx) 1737 if (!coro->cctx)
1729 coro->cctx = cctx_new_run (); 1738 coro->cctx = cctx_new_run ();
1730 else if (!(coro->cctx->flags & CC_TRACE)) 1739 else if (!(coro->cctx->flags & CC_TRACE))
1731 croak ("cannot enable tracing on coroutine with custom stack"); 1740 croak ("cannot enable tracing on coroutine with custom stack,");
1732 1741
1733 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1742 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1734 } 1743 }
1735 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1744 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1736 { 1745 {
… …
1741 else 1750 else
1742 coro->slot->runops = RUNOPS_DEFAULT; 1751 coro->slot->runops = RUNOPS_DEFAULT;
1743 } 1752 }
1744} 1753}
1745 1754
1746#if 0 1755/*****************************************************************************/
1756/* async pool handler */
1757
1747static int 1758static int
1748coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1759slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1749{ 1760{
1750 AV *padlist; 1761 HV *hv = (HV *)SvRV (coro_current);
1751 AV *av = (AV *)mg->mg_obj; 1762 struct coro *coro = (struct coro *)frame->data;
1752 1763
1753 abort (); 1764 if (!coro->invoke_cb)
1765 return 1; /* loop till we have invoke */
1766 else
1767 {
1768 hv_store (hv, "desc", sizeof ("desc") - 1,
1769 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1770
1771 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1772
1773 {
1774 dSP;
1775 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1776 PUTBACK;
1777 }
1778
1779 SvREFCNT_dec (GvAV (PL_defgv));
1780 GvAV (PL_defgv) = coro->invoke_av;
1781 coro->invoke_av = 0;
1782
1783 return 0;
1784 }
1785}
1786
1787static void
1788slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1789{
1790 HV *hv = (HV *)SvRV (coro_current);
1791 struct coro *coro = SvSTATE_hv ((SV *)hv);
1792
1793 if (expect_true (coro->saved_deffh))
1794 {
1795 /* subsequent iteration */
1796 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1797 coro->saved_deffh = 0;
1798
1799 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1800 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1801 {
1802 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1803 coro->invoke_av = newAV ();
1804
1805 frame->prepare = prepare_nop;
1806 }
1807 else
1808 {
1809 av_clear (GvAV (PL_defgv));
1810 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1811
1812 coro->prio = 0;
1813
1814 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1815 api_trace (aTHX_ coro_current, 0);
1816
1817 frame->prepare = prepare_schedule;
1818 av_push (av_async_pool, SvREFCNT_inc (hv));
1819 }
1820 }
1821 else
1822 {
1823 /* first iteration, simply fall through */
1824 frame->prepare = prepare_nop;
1825 }
1826
1827 frame->check = slf_check_pool_handler;
1828 frame->data = (void *)coro;
1829}
1830
1831/*****************************************************************************/
1832/* rouse callback */
1833
1834#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1835
1836static void
1837coro_rouse_callback (pTHX_ CV *cv)
1838{
1839 dXSARGS;
1840 SV *data = (SV *)GENSUB_ARG;
1841
1842 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1843 {
1844 /* first call, set args */
1845 AV *av = newAV ();
1846 SV *coro = SvRV (data);
1847
1848 SvRV_set (data, (SV *)av);
1849 api_ready (aTHX_ coro);
1850 SvREFCNT_dec (coro);
1851
1852 /* better take a full copy of the arguments */
1853 while (items--)
1854 av_store (av, items, newSVsv (ST (items)));
1855 }
1856
1857 XSRETURN_EMPTY;
1858}
1859
1860static int
1861slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1862{
1863 SV *data = (SV *)frame->data;
1864
1865 if (CORO_THROW)
1866 return 0;
1867
1868 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1869 return 1;
1870
1871 /* now push all results on the stack */
1872 {
1873 dSP;
1874 AV *av = (AV *)SvRV (data);
1875 int i;
1876
1877 EXTEND (SP, AvFILLp (av) + 1);
1878 for (i = 0; i <= AvFILLp (av); ++i)
1879 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1880
1881 /* we have stolen the elements, so ste length to zero and free */
1882 AvFILLp (av) = -1;
1883 av_undef (av);
1884
1885 PUTBACK;
1886 }
1754 1887
1755 return 0; 1888 return 0;
1756} 1889}
1757 1890
1758static MGVTBL coro_gensub_vtbl = { 1891static void
1759 0, 0, 0, 0, 1892slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1760 coro_gensub_free 1893{
1761}; 1894 SV *cb;
1762#endif 1895
1896 if (items)
1897 cb = arg [0];
1898 else
1899 {
1900 struct coro *coro = SvSTATE_current;
1901
1902 if (!coro->rouse_cb)
1903 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1904
1905 cb = sv_2mortal (coro->rouse_cb);
1906 coro->rouse_cb = 0;
1907 }
1908
1909 if (!SvROK (cb)
1910 || SvTYPE (SvRV (cb)) != SVt_PVCV
1911 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1912 croak ("Coro::rouse_wait called with illegal callback argument,");
1913
1914 {
1915 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1916 SV *data = (SV *)GENSUB_ARG;
1917
1918 frame->data = (void *)data;
1919 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1920 frame->check = slf_check_rouse_wait;
1921 }
1922}
1923
1924static SV *
1925coro_new_rouse_cb (pTHX)
1926{
1927 HV *hv = (HV *)SvRV (coro_current);
1928 struct coro *coro = SvSTATE_hv (hv);
1929 SV *data = newRV_inc ((SV *)hv);
1930 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1931
1932 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1933 SvREFCNT_dec (data); /* magicext increases the refcount */
1934
1935 SvREFCNT_dec (coro->rouse_cb);
1936 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1937
1938 return cb;
1939}
1940
1941/*****************************************************************************/
1942/* schedule-like-function opcode (SLF) */
1943
1944static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1945static const CV *slf_cv;
1946static SV **slf_argv;
1947static int slf_argc, slf_arga; /* count, allocated */
1948static I32 slf_ax; /* top of stack, for restore */
1949
1950/* this restores the stack in the case we patched the entersub, to */
1951/* recreate the stack frame as perl will on following calls */
1952/* since entersub cleared the stack */
1953static OP *
1954pp_restore (pTHX)
1955{
1956 int i;
1957 SV **SP = PL_stack_base + slf_ax;
1958
1959 PUSHMARK (SP);
1960
1961 EXTEND (SP, slf_argc + 1);
1962
1963 for (i = 0; i < slf_argc; ++i)
1964 PUSHs (sv_2mortal (slf_argv [i]));
1965
1966 PUSHs ((SV *)CvGV (slf_cv));
1967
1968 RETURNOP (slf_restore.op_first);
1969}
1970
1971static void
1972slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1973{
1974 SV **arg = (SV **)slf_frame.data;
1975
1976 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1977}
1978
1979static void
1980slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1981{
1982 if (items != 2)
1983 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1984
1985 frame->prepare = slf_prepare_transfer;
1986 frame->check = slf_check_nop;
1987 frame->data = (void *)arg; /* let's hope it will stay valid */
1988}
1989
1990static void
1991slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1992{
1993 frame->prepare = prepare_schedule;
1994 frame->check = slf_check_nop;
1995}
1996
1997static void
1998slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1999{
2000 frame->prepare = prepare_cede;
2001 frame->check = slf_check_nop;
2002}
2003
2004static void
2005slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2006{
2007 frame->prepare = prepare_cede_notself;
2008 frame->check = slf_check_nop;
2009}
2010
2011/*
2012 * these not obviously related functions are all rolled into one
2013 * function to increase chances that they all will call transfer with the same
2014 * stack offset
2015 * SLF stands for "schedule-like-function".
2016 */
2017static OP *
2018pp_slf (pTHX)
2019{
2020 I32 checkmark; /* mark SP to see how many elements check has pushed */
2021
2022 /* set up the slf frame, unless it has already been set-up */
2023 /* the latter happens when a new coro has been started */
2024 /* or when a new cctx was attached to an existing coroutine */
2025 if (expect_true (!slf_frame.prepare))
2026 {
2027 /* first iteration */
2028 dSP;
2029 SV **arg = PL_stack_base + TOPMARK + 1;
2030 int items = SP - arg; /* args without function object */
2031 SV *gv = *sp;
2032
2033 /* do a quick consistency check on the "function" object, and if it isn't */
2034 /* for us, divert to the real entersub */
2035 if (SvTYPE (gv) != SVt_PVGV
2036 || !GvCV (gv)
2037 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2038 return PL_ppaddr[OP_ENTERSUB](aTHX);
2039
2040 if (!(PL_op->op_flags & OPf_STACKED))
2041 {
2042 /* ampersand-form of call, use @_ instead of stack */
2043 AV *av = GvAV (PL_defgv);
2044 arg = AvARRAY (av);
2045 items = AvFILLp (av) + 1;
2046 }
2047
2048 /* now call the init function, which needs to set up slf_frame */
2049 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2050 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2051
2052 /* pop args */
2053 SP = PL_stack_base + POPMARK;
2054
2055 PUTBACK;
2056 }
2057
2058 /* now that we have a slf_frame, interpret it! */
2059 /* we use a callback system not to make the code needlessly */
2060 /* complicated, but so we can run multiple perl coros from one cctx */
2061
2062 do
2063 {
2064 struct coro_transfer_args ta;
2065
2066 slf_frame.prepare (aTHX_ &ta);
2067 TRANSFER (ta, 0);
2068
2069 checkmark = PL_stack_sp - PL_stack_base;
2070 }
2071 while (slf_frame.check (aTHX_ &slf_frame));
2072
2073 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2074
2075 /* exception handling */
2076 if (expect_false (CORO_THROW))
2077 {
2078 SV *exception = sv_2mortal (CORO_THROW);
2079
2080 CORO_THROW = 0;
2081 sv_setsv (ERRSV, exception);
2082 croak (0);
2083 }
2084
2085 /* return value handling - mostly like entersub */
2086 /* make sure we put something on the stack in scalar context */
2087 if (GIMME_V == G_SCALAR)
2088 {
2089 dSP;
2090 SV **bot = PL_stack_base + checkmark;
2091
2092 if (sp == bot) /* too few, push undef */
2093 bot [1] = &PL_sv_undef;
2094 else if (sp != bot + 1) /* too many, take last one */
2095 bot [1] = *sp;
2096
2097 SP = bot + 1;
2098
2099 PUTBACK;
2100 }
2101
2102 return NORMAL;
2103}
2104
2105static void
2106api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2107{
2108 int i;
2109 SV **arg = PL_stack_base + ax;
2110 int items = PL_stack_sp - arg + 1;
2111
2112 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2113
2114 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2115 && PL_op->op_ppaddr != pp_slf)
2116 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2117
2118 CvFLAGS (cv) |= CVf_SLF;
2119 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2120 slf_cv = cv;
2121
2122 /* we patch the op, and then re-run the whole call */
2123 /* we have to put the same argument on the stack for this to work */
2124 /* and this will be done by pp_restore */
2125 slf_restore.op_next = (OP *)&slf_restore;
2126 slf_restore.op_type = OP_CUSTOM;
2127 slf_restore.op_ppaddr = pp_restore;
2128 slf_restore.op_first = PL_op;
2129
2130 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2131
2132 if (PL_op->op_flags & OPf_STACKED)
2133 {
2134 if (items > slf_arga)
2135 {
2136 slf_arga = items;
2137 free (slf_argv);
2138 slf_argv = malloc (slf_arga * sizeof (SV *));
2139 }
2140
2141 slf_argc = items;
2142
2143 for (i = 0; i < items; ++i)
2144 slf_argv [i] = SvREFCNT_inc (arg [i]);
2145 }
2146 else
2147 slf_argc = 0;
2148
2149 PL_op->op_ppaddr = pp_slf;
2150 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2151
2152 PL_op = (OP *)&slf_restore;
2153}
1763 2154
1764/*****************************************************************************/ 2155/*****************************************************************************/
1765/* PerlIO::cede */ 2156/* PerlIO::cede */
1766 2157
1767typedef struct 2158typedef struct
… …
1795 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2186 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1796 double now = nvtime (); 2187 double now = nvtime ();
1797 2188
1798 if (now >= self->next) 2189 if (now >= self->next)
1799 { 2190 {
1800 api_cede (); 2191 api_cede (aTHX);
1801 self->next = now + self->every; 2192 self->next = now + self->every;
1802 } 2193 }
1803 2194
1804 return PerlIOBuf_flush (aTHX_ f); 2195 return PerlIOBuf_flush (aTHX_ f);
1805} 2196}
… …
1835 PerlIOBuf_get_cnt, 2226 PerlIOBuf_get_cnt,
1836 PerlIOBuf_set_ptrcnt, 2227 PerlIOBuf_set_ptrcnt,
1837}; 2228};
1838 2229
1839/*****************************************************************************/ 2230/*****************************************************************************/
2231/* Coro::Semaphore & Coro::Signal */
1840 2232
1841static const CV *slf_cv; /* for quick consistency check */
1842
1843static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1844static SV *slf_arg0;
1845static SV *slf_arg1;
1846
1847/* this restores the stack in the case we patched the entersub, to */
1848/* recreate the stack frame as perl will on following calls */
1849/* since entersub cleared the stack */
1850static OP * 2233static SV *
1851pp_restore (pTHX) 2234coro_waitarray_new (pTHX_ int count)
1852{ 2235{
2236 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2237 AV *av = newAV ();
2238 SV **ary;
2239
2240 /* unfortunately, building manually saves memory */
2241 Newx (ary, 2, SV *);
2242 AvALLOC (av) = ary;
2243 /*AvARRAY (av) = ary;*/
2244 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2245 AvMAX (av) = 1;
2246 AvFILLp (av) = 0;
2247 ary [0] = newSViv (count);
2248
2249 return newRV_noinc ((SV *)av);
2250}
2251
2252/* semaphore */
2253
2254static void
2255coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2256{
2257 SV *count_sv = AvARRAY (av)[0];
2258 IV count = SvIVX (count_sv);
2259
2260 count += adjust;
2261 SvIVX (count_sv) = count;
2262
2263 /* now wake up as many waiters as are expected to lock */
2264 while (count > 0 && AvFILLp (av) > 0)
2265 {
2266 SV *cb;
2267
2268 /* swap first two elements so we can shift a waiter */
2269 AvARRAY (av)[0] = AvARRAY (av)[1];
2270 AvARRAY (av)[1] = count_sv;
2271 cb = av_shift (av);
2272
2273 if (SvOBJECT (cb))
2274 {
2275 api_ready (aTHX_ cb);
2276 --count;
2277 }
2278 else if (SvTYPE (cb) == SVt_PVCV)
2279 {
2280 dSP;
2281 PUSHMARK (SP);
2282 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2283 PUTBACK;
2284 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2285 }
2286
2287 SvREFCNT_dec (cb);
2288 }
2289}
2290
2291static void
2292coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2293{
2294 /* call $sem->adjust (0) to possibly wake up some other waiters */
2295 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2296}
2297
2298static int
2299slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2300{
2301 AV *av = (AV *)frame->data;
2302 SV *count_sv = AvARRAY (av)[0];
2303
2304 /* if we are about to throw, don't actually acquire the lock, just throw */
2305 if (CORO_THROW)
2306 return 0;
2307 else if (SvIVX (count_sv) > 0)
2308 {
2309 SvSTATE_current->on_destroy = 0;
2310
2311 if (acquire)
2312 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2313 else
2314 coro_semaphore_adjust (aTHX_ av, 0);
2315
2316 return 0;
2317 }
2318 else
2319 {
2320 int i;
2321 /* if we were woken up but can't down, we look through the whole */
2322 /* waiters list and only add us if we aren't in there already */
2323 /* this avoids some degenerate memory usage cases */
2324
2325 for (i = 1; i <= AvFILLp (av); ++i)
2326 if (AvARRAY (av)[i] == SvRV (coro_current))
2327 return 1;
2328
2329 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2330 return 1;
2331 }
2332}
2333
2334static int
2335slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2336{
2337 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2338}
2339
2340static int
2341slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2342{
2343 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2344}
2345
2346static void
2347slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2348{
2349 AV *av = (AV *)SvRV (arg [0]);
2350
2351 if (SvIVX (AvARRAY (av)[0]) > 0)
2352 {
2353 frame->data = (void *)av;
2354 frame->prepare = prepare_nop;
2355 }
2356 else
2357 {
2358 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2359
2360 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2361 frame->prepare = prepare_schedule;
2362
2363 /* to avoid race conditions when a woken-up coro gets terminated */
2364 /* we arrange for a temporary on_destroy that calls adjust (0) */
2365 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2366 }
2367}
2368
2369static void
2370slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2371{
2372 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2373 frame->check = slf_check_semaphore_down;
2374}
2375
2376static void
2377slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2378{
2379 if (items >= 2)
2380 {
2381 /* callback form */
2382 AV *av = (AV *)SvRV (arg [0]);
2383 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2384
2385 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2386
2387 if (SvIVX (AvARRAY (av)[0]) > 0)
2388 coro_semaphore_adjust (aTHX_ av, 0);
2389
2390 frame->prepare = prepare_nop;
2391 frame->check = slf_check_nop;
2392 }
2393 else
2394 {
2395 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2396 frame->check = slf_check_semaphore_wait;
2397 }
2398}
2399
2400/* signal */
2401
2402static void
2403coro_signal_wake (pTHX_ AV *av, int count)
2404{
2405 SvIVX (AvARRAY (av)[0]) = 0;
2406
2407 /* now signal count waiters */
2408 while (count > 0 && AvFILLp (av) > 0)
2409 {
2410 SV *cb;
2411
2412 /* swap first two elements so we can shift a waiter */
2413 cb = AvARRAY (av)[0];
2414 AvARRAY (av)[0] = AvARRAY (av)[1];
2415 AvARRAY (av)[1] = cb;
2416
2417 cb = av_shift (av);
2418
2419 api_ready (aTHX_ cb);
2420 sv_setiv (cb, 0); /* signal waiter */
2421 SvREFCNT_dec (cb);
2422
2423 --count;
2424 }
2425}
2426
2427static int
2428slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2429{
2430 /* if we are about to throw, also stop waiting */
2431 return SvROK ((SV *)frame->data) && !CORO_THROW;
2432}
2433
2434static void
2435slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2436{
2437 AV *av = (AV *)SvRV (arg [0]);
2438
2439 if (SvIVX (AvARRAY (av)[0]))
2440 {
2441 SvIVX (AvARRAY (av)[0]) = 0;
2442 frame->prepare = prepare_nop;
2443 frame->check = slf_check_nop;
2444 }
2445 else
2446 {
2447 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2448
2449 av_push (av, waiter);
2450
2451 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2452 frame->prepare = prepare_schedule;
2453 frame->check = slf_check_signal_wait;
2454 }
2455}
2456
2457/*****************************************************************************/
2458/* Coro::AIO */
2459
2460#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2461
2462/* helper storage struct */
2463struct io_state
2464{
2465 int errorno;
2466 I32 laststype; /* U16 in 5.10.0 */
2467 int laststatval;
2468 Stat_t statcache;
2469};
2470
2471static void
2472coro_aio_callback (pTHX_ CV *cv)
2473{
2474 dXSARGS;
2475 AV *state = (AV *)GENSUB_ARG;
2476 SV *coro = av_pop (state);
2477 SV *data_sv = newSV (sizeof (struct io_state));
2478
2479 av_extend (state, items - 1);
2480
2481 sv_upgrade (data_sv, SVt_PV);
2482 SvCUR_set (data_sv, sizeof (struct io_state));
2483 SvPOK_only (data_sv);
2484
2485 {
2486 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2487
2488 data->errorno = errno;
2489 data->laststype = PL_laststype;
2490 data->laststatval = PL_laststatval;
2491 data->statcache = PL_statcache;
2492 }
2493
2494 /* now build the result vector out of all the parameters and the data_sv */
2495 {
2496 int i;
2497
2498 for (i = 0; i < items; ++i)
2499 av_push (state, SvREFCNT_inc_NN (ST (i)));
2500 }
2501
2502 av_push (state, data_sv);
2503
2504 api_ready (aTHX_ coro);
2505 SvREFCNT_dec (coro);
2506 SvREFCNT_dec ((AV *)state);
2507}
2508
2509static int
2510slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2511{
2512 AV *state = (AV *)frame->data;
2513
2514 /* if we are about to throw, return early */
2515 /* this does not cancel the aio request, but at least */
2516 /* it quickly returns */
2517 if (CORO_THROW)
2518 return 0;
2519
2520 /* one element that is an RV? repeat! */
2521 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2522 return 1;
2523
2524 /* restore status */
2525 {
2526 SV *data_sv = av_pop (state);
2527 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2528
2529 errno = data->errorno;
2530 PL_laststype = data->laststype;
2531 PL_laststatval = data->laststatval;
2532 PL_statcache = data->statcache;
2533
2534 SvREFCNT_dec (data_sv);
2535 }
2536
2537 /* push result values */
2538 {
1853 dSP; 2539 dSP;
2540 int i;
1854 2541
2542 EXTEND (SP, AvFILLp (state) + 1);
2543 for (i = 0; i <= AvFILLp (state); ++i)
2544 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2545
2546 PUTBACK;
2547 }
2548
2549 return 0;
2550}
2551
2552static void
2553slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2554{
2555 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2556 SV *coro_hv = SvRV (coro_current);
2557 struct coro *coro = SvSTATE_hv (coro_hv);
2558
2559 /* put our coroutine id on the state arg */
2560 av_push (state, SvREFCNT_inc_NN (coro_hv));
2561
2562 /* first see whether we have a non-zero priority and set it as AIO prio */
2563 if (coro->prio)
2564 {
2565 dSP;
2566
2567 static SV *prio_cv;
2568 static SV *prio_sv;
2569
2570 if (expect_false (!prio_cv))
2571 {
2572 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2573 prio_sv = newSViv (0);
2574 }
2575
2576 PUSHMARK (SP);
2577 sv_setiv (prio_sv, coro->prio);
2578 XPUSHs (prio_sv);
2579
2580 PUTBACK;
2581 call_sv (prio_cv, G_VOID | G_DISCARD);
2582 }
2583
2584 /* now call the original request */
2585 {
2586 dSP;
2587 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2588 int i;
2589
1855 PUSHMARK (SP); 2590 PUSHMARK (SP);
1856 2591
1857 EXTEND (SP, 3); 2592 /* first push all args to the stack */
1858 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2593 EXTEND (SP, items + 1);
1859 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1860 PUSHs ((SV *)CvGV (slf_cv));
1861 2594
1862 RETURNOP (slf_restore.op_first); 2595 for (i = 0; i < items; ++i)
1863} 2596 PUSHs (arg [i]);
1864 2597
1865#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */ 2598 /* now push the callback closure */
2599 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1866 2600
1867/* declare prototype */ 2601 /* now call the AIO function - we assume our request is uncancelable */
1868XS(XS_Coro__State__set_stacklevel);
1869
1870/*
1871 * these not obviously related functions are all rolled into one
1872 * function to increase chances that they all will call transfer with the same
1873 * stack offset
1874 * SLF stands for "schedule-like-function".
1875 */
1876static OP *
1877pp_slf (pTHX)
1878{
1879 dSP;
1880 struct transfer_args ta;
1881 SV **arg = PL_stack_base + TOPMARK + 1;
1882 int items = SP - arg; /* args without function object */
1883
1884 /* do a quick consistency check on the "function" object, and if it isn't */
1885 /* for us, divert to the real entersub */
1886 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1887 return PL_ppaddr[OP_ENTERSUB](aTHX);
1888
1889 /* pop args */
1890 SP = PL_stack_base + POPMARK;
1891
1892 if (!(PL_op->op_flags & OPf_STACKED))
1893 {
1894 /* ampersand-form of call, use @_ instead of stack */
1895 AV *av = GvAV (PL_defgv);
1896 arg = AvARRAY (av);
1897 items = AvFILLp (av) + 1;
1898 }
1899
1900 PUTBACK; 2602 PUTBACK;
1901 switch (PL_op->op_private & OPpENTERSUB_SLF) 2603 call_sv ((SV *)req, G_VOID | G_DISCARD);
1902 {
1903 case 0:
1904 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1905 break;
1906
1907 case 1:
1908 if (items != 2)
1909 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1910
1911 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1912 break;
1913
1914 case 2:
1915 prepare_schedule (aTHX_ &ta);
1916 break;
1917
1918 case 3:
1919 prepare_cede (aTHX_ &ta);
1920 break;
1921
1922 case 4:
1923 prepare_cede_notself (aTHX_ &ta);
1924 break;
1925
1926 case 5:
1927 abort ();
1928
1929 default:
1930 abort ();
1931 } 2604 }
1932 2605
1933 TRANSFER (ta, 0); 2606 /* now that the requets is going, we loop toll we have a result */
1934 SPAGAIN; 2607 frame->data = (void *)state;
1935 2608 frame->prepare = prepare_schedule;
1936 PUTBACK; 2609 frame->check = slf_check_aio_req;
1937 SLF_TAIL;
1938 SPAGAIN;
1939 RETURN;
1940} 2610}
1941 2611
1942static void 2612static void
1943coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2613coro_aio_req_xs (pTHX_ CV *cv)
1944{ 2614{
1945 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); 2615 dXSARGS;
1946 2616
1947 assert (("FATAL: SLF call with illegal CV value", CvGV (cv))); 2617 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1948 slf_cv = cv;
1949 2618
1950 /* we patch the op, and then re-run the whole call */ 2619 XSRETURN_EMPTY;
1951 /* we have to put the same argument on the stack for this to work */
1952 /* and this will be done by pp_restore */
1953 slf_restore.op_next = (OP *)&slf_restore;
1954 slf_restore.op_type = OP_NULL;
1955 slf_restore.op_ppaddr = pp_restore;
1956 slf_restore.op_first = PL_op;
1957
1958 slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1959 slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1960
1961 PL_op->op_ppaddr = pp_slf;
1962 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
1963
1964 PL_op = (OP *)&slf_restore;
1965} 2620}
2621
2622/*****************************************************************************/
1966 2623
1967MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2624MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1968 2625
1969PROTOTYPES: DISABLE 2626PROTOTYPES: DISABLE
1970 2627
1971BOOT: 2628BOOT:
1972{ 2629{
1973#ifdef USE_ITHREADS 2630#ifdef USE_ITHREADS
1974 MUTEX_INIT (&coro_lock);
1975# if CORO_PTHREAD 2631# if CORO_PTHREAD
1976 coro_thx = PERL_GET_CONTEXT; 2632 coro_thx = PERL_GET_CONTEXT;
1977# endif 2633# endif
1978#endif 2634#endif
1979 BOOT_PAGESIZE; 2635 BOOT_PAGESIZE;
… …
2000 main_top_env = PL_top_env; 2656 main_top_env = PL_top_env;
2001 2657
2002 while (main_top_env->je_prev) 2658 while (main_top_env->je_prev)
2003 main_top_env = main_top_env->je_prev; 2659 main_top_env = main_top_env->je_prev;
2004 2660
2661 {
2662 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2663
2664 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2665 hv_store_ent (PL_custom_op_names, slf,
2666 newSVpv ("coro_slf", 0), 0);
2667
2668 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2669 hv_store_ent (PL_custom_op_descs, slf,
2670 newSVpv ("coro schedule like function", 0), 0);
2671 }
2672
2005 coroapi.ver = CORO_API_VERSION; 2673 coroapi.ver = CORO_API_VERSION;
2006 coroapi.rev = CORO_API_REVISION; 2674 coroapi.rev = CORO_API_REVISION;
2675
2007 coroapi.transfer = api_transfer; 2676 coroapi.transfer = api_transfer;
2677
2678 coroapi.sv_state = SvSTATE_;
2679 coroapi.execute_slf = api_execute_slf;
2680 coroapi.prepare_nop = prepare_nop;
2681 coroapi.prepare_schedule = prepare_schedule;
2682 coroapi.prepare_cede = prepare_cede;
2683 coroapi.prepare_cede_notself = prepare_cede_notself;
2008 2684
2009 { 2685 {
2010 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2686 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2011 2687
2012 if (!svp) croak ("Time::HiRes is required"); 2688 if (!svp) croak ("Time::HiRes is required");
… …
2018 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2694 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2019} 2695}
2020 2696
2021SV * 2697SV *
2022new (char *klass, ...) 2698new (char *klass, ...)
2699 ALIAS:
2700 Coro::new = 1
2023 CODE: 2701 CODE:
2024{ 2702{
2025 struct coro *coro; 2703 struct coro *coro;
2026 MAGIC *mg; 2704 MAGIC *mg;
2027 HV *hv; 2705 HV *hv;
2706 CV *cb;
2028 int i; 2707 int i;
2708
2709 if (items > 1)
2710 {
2711 cb = coro_sv_2cv (aTHX_ ST (1));
2712
2713 if (!ix)
2714 {
2715 if (CvISXSUB (cb))
2716 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2717
2718 if (!CvROOT (cb))
2719 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2720 }
2721 }
2029 2722
2030 Newz (0, coro, 1, struct coro); 2723 Newz (0, coro, 1, struct coro);
2031 coro->args = newAV (); 2724 coro->args = newAV ();
2032 coro->flags = CF_NEW; 2725 coro->flags = CF_NEW;
2033 2726
… …
2038 coro->hv = hv = newHV (); 2731 coro->hv = hv = newHV ();
2039 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2732 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2040 mg->mg_flags |= MGf_DUP; 2733 mg->mg_flags |= MGf_DUP;
2041 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2734 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2042 2735
2736 if (items > 1)
2737 {
2043 av_extend (coro->args, items - 1); 2738 av_extend (coro->args, items - 1 + ix - 1);
2739
2740 if (ix)
2741 {
2742 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2743 cb = cv_coro_run;
2744 }
2745
2746 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2747
2044 for (i = 1; i < items; i++) 2748 for (i = 2; i < items; i++)
2045 av_push (coro->args, newSVsv (ST (i))); 2749 av_push (coro->args, newSVsv (ST (i)));
2750 }
2046} 2751}
2047 OUTPUT: 2752 OUTPUT:
2048 RETVAL 2753 RETVAL
2049 2754
2050void 2755void
2051_set_stacklevel (...) 2756transfer (...)
2052 ALIAS: 2757 PROTOTYPE: $$
2053 Coro::State::transfer = 1 2758 CODE:
2054 Coro::schedule = 2 2759 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2055 Coro::cede = 3
2056 Coro::cede_notself = 4
2057 CODE:
2058 coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
2059 2760
2060bool 2761bool
2061_destroy (SV *coro_sv) 2762_destroy (SV *coro_sv)
2062 CODE: 2763 CODE:
2063 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2764 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2070 CODE: 2771 CODE:
2071 _exit (code); 2772 _exit (code);
2072 2773
2073int 2774int
2074cctx_stacksize (int new_stacksize = 0) 2775cctx_stacksize (int new_stacksize = 0)
2776 PROTOTYPE: ;$
2075 CODE: 2777 CODE:
2076 RETVAL = cctx_stacksize; 2778 RETVAL = cctx_stacksize;
2077 if (new_stacksize) 2779 if (new_stacksize)
2078 { 2780 {
2079 cctx_stacksize = new_stacksize; 2781 cctx_stacksize = new_stacksize;
… …
2082 OUTPUT: 2784 OUTPUT:
2083 RETVAL 2785 RETVAL
2084 2786
2085int 2787int
2086cctx_max_idle (int max_idle = 0) 2788cctx_max_idle (int max_idle = 0)
2789 PROTOTYPE: ;$
2087 CODE: 2790 CODE:
2088 RETVAL = cctx_max_idle; 2791 RETVAL = cctx_max_idle;
2089 if (max_idle > 1) 2792 if (max_idle > 1)
2090 cctx_max_idle = max_idle; 2793 cctx_max_idle = max_idle;
2091 OUTPUT: 2794 OUTPUT:
2092 RETVAL 2795 RETVAL
2093 2796
2094int 2797int
2095cctx_count () 2798cctx_count ()
2799 PROTOTYPE:
2096 CODE: 2800 CODE:
2097 RETVAL = cctx_count; 2801 RETVAL = cctx_count;
2098 OUTPUT: 2802 OUTPUT:
2099 RETVAL 2803 RETVAL
2100 2804
2101int 2805int
2102cctx_idle () 2806cctx_idle ()
2807 PROTOTYPE:
2103 CODE: 2808 CODE:
2104 RETVAL = cctx_idle; 2809 RETVAL = cctx_idle;
2105 OUTPUT: 2810 OUTPUT:
2106 RETVAL 2811 RETVAL
2107 2812
2108void 2813void
2109list () 2814list ()
2815 PROTOTYPE:
2110 PPCODE: 2816 PPCODE:
2111{ 2817{
2112 struct coro *coro; 2818 struct coro *coro;
2113 for (coro = coro_first; coro; coro = coro->next) 2819 for (coro = coro_first; coro; coro = coro->next)
2114 if (coro->hv) 2820 if (coro->hv)
… …
2176 2882
2177void 2883void
2178throw (Coro::State self, SV *throw = &PL_sv_undef) 2884throw (Coro::State self, SV *throw = &PL_sv_undef)
2179 PROTOTYPE: $;$ 2885 PROTOTYPE: $;$
2180 CODE: 2886 CODE:
2887{
2888 struct coro *current = SvSTATE_current;
2889 SV **throwp = self == current ? &CORO_THROW : &self->except;
2181 SvREFCNT_dec (self->throw); 2890 SvREFCNT_dec (*throwp);
2182 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2891 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2892}
2183 2893
2184void 2894void
2185api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2895api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2896 PROTOTYPE: $;$
2897 C_ARGS: aTHX_ coro, flags
2186 2898
2187SV * 2899SV *
2188has_cctx (Coro::State coro) 2900has_cctx (Coro::State coro)
2189 PROTOTYPE: $ 2901 PROTOTYPE: $
2190 CODE: 2902 CODE:
… …
2214 OUTPUT: 2926 OUTPUT:
2215 RETVAL 2927 RETVAL
2216 2928
2217void 2929void
2218force_cctx () 2930force_cctx ()
2931 PROTOTYPE:
2219 CODE: 2932 CODE:
2220 struct coro *coro = SvSTATE (coro_current);
2221 coro->cctx->idle_sp = 0; 2933 SvSTATE_current->cctx->idle_sp = 0;
2222 2934
2223void 2935void
2224swap_defsv (Coro::State self) 2936swap_defsv (Coro::State self)
2225 PROTOTYPE: $ 2937 PROTOTYPE: $
2226 ALIAS: 2938 ALIAS:
2227 swap_defav = 1 2939 swap_defav = 1
2228 CODE: 2940 CODE:
2229 if (!self->slot) 2941 if (!self->slot)
2230 croak ("cannot swap state with coroutine that has no saved state"); 2942 croak ("cannot swap state with coroutine that has no saved state,");
2231 else 2943 else
2232 { 2944 {
2233 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2945 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2234 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2946 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2235 2947
2236 SV *tmp = *src; *src = *dst; *dst = tmp; 2948 SV *tmp = *src; *src = *dst; *dst = tmp;
2237 } 2949 }
2238 2950
2951
2239MODULE = Coro::State PACKAGE = Coro 2952MODULE = Coro::State PACKAGE = Coro
2240 2953
2241BOOT: 2954BOOT:
2242{ 2955{
2243 int i; 2956 int i;
2244 2957
2245 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2958 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2246 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2959 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2247 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2960 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2248 2961 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2962 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2249 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2963 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2250 SvREADONLY_on (coro_current); 2964
2965 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2966 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2967 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
2968 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2251 2969
2252 coro_stash = gv_stashpv ("Coro", TRUE); 2970 coro_stash = gv_stashpv ("Coro", TRUE);
2253 2971
2254 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2972 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2255 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2973 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2267 coroapi.schedule = api_schedule; 2985 coroapi.schedule = api_schedule;
2268 coroapi.cede = api_cede; 2986 coroapi.cede = api_cede;
2269 coroapi.cede_notself = api_cede_notself; 2987 coroapi.cede_notself = api_cede_notself;
2270 coroapi.ready = api_ready; 2988 coroapi.ready = api_ready;
2271 coroapi.is_ready = api_is_ready; 2989 coroapi.is_ready = api_is_ready;
2272 coroapi.nready = &coro_nready; 2990 coroapi.nready = coro_nready;
2273 coroapi.current = coro_current; 2991 coroapi.current = coro_current;
2274 2992
2275 GCoroAPI = &coroapi; 2993 /*GCoroAPI = &coroapi;*/
2276 sv_setiv (sv, (IV)&coroapi); 2994 sv_setiv (sv, (IV)&coroapi);
2277 SvREADONLY_on (sv); 2995 SvREADONLY_on (sv);
2278 } 2996 }
2279} 2997}
2998
2999void
3000schedule (...)
3001 CODE:
3002 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3003
3004void
3005cede (...)
3006 CODE:
3007 CORO_EXECUTE_SLF_XS (slf_init_cede);
3008
3009void
3010cede_notself (...)
3011 CODE:
3012 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2280 3013
2281void 3014void
2282_set_current (SV *current) 3015_set_current (SV *current)
2283 PROTOTYPE: $ 3016 PROTOTYPE: $
2284 CODE: 3017 CODE:
… …
2287 3020
2288void 3021void
2289_set_readyhook (SV *hook) 3022_set_readyhook (SV *hook)
2290 PROTOTYPE: $ 3023 PROTOTYPE: $
2291 CODE: 3024 CODE:
2292 LOCK;
2293 SvREFCNT_dec (coro_readyhook); 3025 SvREFCNT_dec (coro_readyhook);
2294 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3026 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2295 UNLOCK;
2296 3027
2297int 3028int
2298prio (Coro::State coro, int newprio = 0) 3029prio (Coro::State coro, int newprio = 0)
3030 PROTOTYPE: $;$
2299 ALIAS: 3031 ALIAS:
2300 nice = 1 3032 nice = 1
2301 CODE: 3033 CODE:
2302{ 3034{
2303 RETVAL = coro->prio; 3035 RETVAL = coro->prio;
… …
2318 3050
2319SV * 3051SV *
2320ready (SV *self) 3052ready (SV *self)
2321 PROTOTYPE: $ 3053 PROTOTYPE: $
2322 CODE: 3054 CODE:
2323 RETVAL = boolSV (api_ready (self)); 3055 RETVAL = boolSV (api_ready (aTHX_ self));
2324 OUTPUT: 3056 OUTPUT:
2325 RETVAL 3057 RETVAL
2326 3058
2327int 3059int
2328nready (...) 3060nready (...)
… …
2330 CODE: 3062 CODE:
2331 RETVAL = coro_nready; 3063 RETVAL = coro_nready;
2332 OUTPUT: 3064 OUTPUT:
2333 RETVAL 3065 RETVAL
2334 3066
2335# for async_pool speedup
2336void 3067void
2337_pool_1 (SV *cb) 3068_pool_handler (...)
2338 CODE: 3069 CODE:
2339{ 3070 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2340 struct coro *coro = SvSTATE (coro_current);
2341 HV *hv = (HV *)SvRV (coro_current);
2342 AV *defav = GvAV (PL_defgv);
2343 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2344 AV *invoke_av;
2345 int i, len;
2346 3071
2347 if (!invoke) 3072void
3073async_pool (SV *cv, ...)
3074 PROTOTYPE: &@
3075 PPCODE:
3076{
3077 HV *hv = (HV *)av_pop (av_async_pool);
3078 AV *av = newAV ();
3079 SV *cb = ST (0);
3080 int i;
3081
3082 av_extend (av, items - 2);
3083 for (i = 1; i < items; ++i)
3084 av_push (av, SvREFCNT_inc_NN (ST (i)));
3085
3086 if ((SV *)hv == &PL_sv_undef)
2348 { 3087 {
2349 SV *old = PL_diehook; 3088 PUSHMARK (SP);
2350 PL_diehook = 0; 3089 EXTEND (SP, 2);
2351 SvREFCNT_dec (old); 3090 PUSHs (sv_Coro);
2352 croak ("\3async_pool terminate\2\n"); 3091 PUSHs ((SV *)cv_pool_handler);
3092 PUTBACK;
3093 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3094 SPAGAIN;
3095
3096 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2353 } 3097 }
2354 3098
2355 SvREFCNT_dec (coro->saved_deffh);
2356 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2357
2358 hv_store (hv, "desc", sizeof ("desc") - 1,
2359 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2360
2361 invoke_av = (AV *)SvRV (invoke);
2362 len = av_len (invoke_av);
2363
2364 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2365
2366 if (len > 0)
2367 { 3099 {
2368 av_fill (defav, len - 1); 3100 struct coro *coro = SvSTATE_hv (hv);
2369 for (i = 0; i < len; ++i) 3101
2370 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3102 assert (!coro->invoke_cb);
3103 assert (!coro->invoke_av);
3104 coro->invoke_cb = SvREFCNT_inc (cb);
3105 coro->invoke_av = av;
2371 } 3106 }
2372 3107
3108 api_ready (aTHX_ (SV *)hv);
3109
3110 if (GIMME_V != G_VOID)
3111 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3112 else
2373 SvREFCNT_dec (invoke); 3113 SvREFCNT_dec (hv);
2374} 3114}
2375 3115
2376void 3116SV *
2377_pool_2 (SV *cb) 3117rouse_cb ()
3118 PROTOTYPE:
2378 CODE: 3119 CODE:
2379{ 3120 RETVAL = coro_new_rouse_cb (aTHX);
2380 struct coro *coro = SvSTATE (coro_current);
2381
2382 sv_setsv (cb, &PL_sv_undef);
2383
2384 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2385 coro->saved_deffh = 0;
2386
2387 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2388 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2389 {
2390 SV *old = PL_diehook;
2391 PL_diehook = 0;
2392 SvREFCNT_dec (old);
2393 croak ("\3async_pool terminate\2\n");
2394 }
2395
2396 av_clear (GvAV (PL_defgv));
2397 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2398 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2399
2400 coro->prio = 0;
2401
2402 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2403 api_trace (coro_current, 0);
2404
2405 av_push (av_async_pool, newSVsv (coro_current));
2406}
2407
2408#if 0
2409
2410void
2411_generator_call (...)
2412 PROTOTYPE: @
2413 PPCODE:
2414 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2415 xxxx
2416 abort ();
2417
2418SV *
2419gensub (SV *sub, ...)
2420 PROTOTYPE: &;@
2421 CODE:
2422{
2423 struct coro *coro;
2424 MAGIC *mg;
2425 CV *xcv;
2426 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2427 int i;
2428
2429 CvGV (ncv) = CvGV (cv);
2430 CvFILE (ncv) = CvFILE (cv);
2431
2432 Newz (0, coro, 1, struct coro);
2433 coro->args = newAV ();
2434 coro->flags = CF_NEW;
2435
2436 av_extend (coro->args, items - 1);
2437 for (i = 1; i < items; i++)
2438 av_push (coro->args, newSVsv (ST (i)));
2439
2440 CvISXSUB_on (ncv);
2441 CvXSUBANY (ncv).any_ptr = (void *)coro;
2442
2443 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2444
2445 CvXSUB (ncv) = CvXSUB (xcv);
2446 CvANON_on (ncv);
2447
2448 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2449 RETVAL = newRV_noinc ((SV *)ncv);
2450}
2451 OUTPUT: 3121 OUTPUT:
2452 RETVAL 3122 RETVAL
2453 3123
2454#endif
2455
2456
2457MODULE = Coro::State PACKAGE = Coro::AIO
2458
2459void 3124void
2460_get_state (SV *self) 3125rouse_wait (...)
3126 PROTOTYPE: ;$
2461 PPCODE: 3127 PPCODE:
2462{ 3128 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2463 AV *defav = GvAV (PL_defgv);
2464 AV *av = newAV ();
2465 int i;
2466 SV *data_sv = newSV (sizeof (struct io_state));
2467 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2468 SvCUR_set (data_sv, sizeof (struct io_state));
2469 SvPOK_only (data_sv);
2470 3129
2471 data->errorno = errno;
2472 data->laststype = PL_laststype;
2473 data->laststatval = PL_laststatval;
2474 data->statcache = PL_statcache;
2475 3130
2476 av_extend (av, AvFILLp (defav) + 1 + 1); 3131MODULE = Coro::State PACKAGE = PerlIO::cede
2477 3132
2478 for (i = 0; i <= AvFILLp (defav); ++i) 3133BOOT:
2479 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3134 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2480 3135
2481 av_push (av, data_sv);
2482 3136
2483 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3137MODULE = Coro::State PACKAGE = Coro::Semaphore
2484 3138
2485 api_ready (self); 3139SV *
2486} 3140new (SV *klass, SV *count = 0)
3141 CODE:
3142 RETVAL = sv_bless (
3143 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3144 GvSTASH (CvGV (cv))
3145 );
3146 OUTPUT:
3147 RETVAL
3148
3149# helper for Coro::Channel
3150SV *
3151_alloc (int count)
3152 CODE:
3153 RETVAL = coro_waitarray_new (aTHX_ count);
3154 OUTPUT:
3155 RETVAL
3156
3157SV *
3158count (SV *self)
3159 CODE:
3160 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3161 OUTPUT:
3162 RETVAL
2487 3163
2488void 3164void
2489_set_state (SV *state) 3165up (SV *self, int adjust = 1)
2490 PROTOTYPE: $ 3166 ALIAS:
3167 adjust = 1
3168 CODE:
3169 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3170
3171void
3172down (...)
3173 CODE:
3174 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3175
3176void
3177wait (...)
3178 CODE:
3179 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3180
3181void
3182try (SV *self)
3183 PPCODE:
3184{
3185 AV *av = (AV *)SvRV (self);
3186 SV *count_sv = AvARRAY (av)[0];
3187 IV count = SvIVX (count_sv);
3188
3189 if (count > 0)
3190 {
3191 --count;
3192 SvIVX (count_sv) = count;
3193 XSRETURN_YES;
3194 }
3195 else
3196 XSRETURN_NO;
3197}
3198
3199void
3200waiters (SV *self)
3201 PPCODE:
3202{
3203 AV *av = (AV *)SvRV (self);
3204 int wcount = AvFILLp (av) + 1 - 1;
3205
3206 if (GIMME_V == G_SCALAR)
3207 XPUSHs (sv_2mortal (newSViv (wcount)));
3208 else
3209 {
3210 int i;
3211 EXTEND (SP, wcount);
3212 for (i = 1; i <= wcount; ++i)
3213 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3214 }
3215}
3216
3217MODULE = Coro::State PACKAGE = Coro::Signal
3218
3219SV *
3220new (SV *klass)
2491 PPCODE: 3221 CODE:
3222 RETVAL = sv_bless (
3223 coro_waitarray_new (aTHX_ 0),
3224 GvSTASH (CvGV (cv))
3225 );
3226 OUTPUT:
3227 RETVAL
3228
3229void
3230wait (...)
3231 CODE:
3232 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3233
3234void
3235broadcast (SV *self)
3236 CODE:
2492{ 3237{
2493 AV *av = (AV *)SvRV (state); 3238 AV *av = (AV *)SvRV (self);
2494 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3239 coro_signal_wake (aTHX_ av, AvFILLp (av));
2495 int i; 3240}
2496 3241
2497 errno = data->errorno; 3242void
2498 PL_laststype = data->laststype; 3243send (SV *self)
2499 PL_laststatval = data->laststatval; 3244 CODE:
2500 PL_statcache = data->statcache; 3245{
3246 AV *av = (AV *)SvRV (self);
2501 3247
2502 EXTEND (SP, AvFILLp (av)); 3248 if (AvFILLp (av))
2503 for (i = 0; i < AvFILLp (av); ++i) 3249 coro_signal_wake (aTHX_ av, 1);
2504 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3250 else
3251 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2505} 3252}
3253
3254IV
3255awaited (SV *self)
3256 CODE:
3257 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3258 OUTPUT:
3259 RETVAL
2506 3260
2507 3261
2508MODULE = Coro::State PACKAGE = Coro::AnyEvent 3262MODULE = Coro::State PACKAGE = Coro::AnyEvent
2509 3263
2510BOOT: 3264BOOT:
2511 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3265 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2512 3266
2513SV * 3267void
2514_schedule (...) 3268_schedule (...)
2515 PROTOTYPE: @
2516 CODE: 3269 CODE:
2517{ 3270{
2518 static int incede; 3271 static int incede;
2519 3272
2520 api_cede_notself (); 3273 api_cede_notself (aTHX);
2521 3274
2522 ++incede; 3275 ++incede;
2523 while (coro_nready >= incede && api_cede ()) 3276 while (coro_nready >= incede && api_cede (aTHX))
2524 ; 3277 ;
2525 3278
2526 sv_setsv (sv_activity, &PL_sv_undef); 3279 sv_setsv (sv_activity, &PL_sv_undef);
2527 if (coro_nready >= incede) 3280 if (coro_nready >= incede)
2528 { 3281 {
2529 PUSHMARK (SP); 3282 PUSHMARK (SP);
2530 PUTBACK; 3283 PUTBACK;
2531 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3284 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2532 SPAGAIN;
2533 } 3285 }
2534 3286
2535 --incede; 3287 --incede;
2536} 3288}
2537 3289
2538 3290
2539MODULE = Coro::State PACKAGE = PerlIO::cede 3291MODULE = Coro::State PACKAGE = Coro::AIO
2540 3292
2541BOOT: 3293void
2542 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3294_register (char *target, char *proto, SV *req)
3295 CODE:
3296{
3297 CV *req_cv = coro_sv_2cv (aTHX_ req);
3298 /* newXSproto doesn't return the CV on 5.8 */
3299 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3300 sv_setpv ((SV *)slf_cv, proto);
3301 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3302}
2543 3303

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