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Comparing Coro/Coro/State.xs (file contents):
Revision 1.266 by root, Fri Nov 14 03:26:22 2008 UTC vs.
Revision 1.317 by root, Thu Nov 20 06:28:52 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
100 106
101/* 5.8.7 */ 107/* 5.8.7 */
102#ifndef SvRV_set 108#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 109# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 110#endif
… …
116# define CORO_PREFER_PERL_FUNCTIONS 0 122# define CORO_PREFER_PERL_FUNCTIONS 0
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. */
127#if __GNUC__ >= 4
128# define dSTACKLEVEL int stacklevel_dummy
129# define STACKLEVEL __builtin_frame_address (0)
130#else
121#define dSTACKLEVEL volatile char stacklevel 131# define dSTACKLEVEL volatile void *stacklevel
122#define STACKLEVEL ((void *)&stacklevel) 132# define STACKLEVEL ((void *)&stacklevel)
133#endif
123 134
124#define IN_DESTRUCT (PL_main_cv == Nullcv) 135#define IN_DESTRUCT (PL_main_cv == Nullcv)
125 136
126#if __GNUC__ >= 3 137#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 138# define attribute(x) __attribute__(x)
… …
137#define expect_true(expr) expect ((expr) != 0, 1) 148#define expect_true(expr) expect ((expr) != 0, 1)
138 149
139#define NOINLINE attribute ((noinline)) 150#define NOINLINE attribute ((noinline))
140 151
141#include "CoroAPI.h" 152#include "CoroAPI.h"
153#define GCoroAPI (&coroapi) /* very sneaky */
142 154
143#ifdef USE_ITHREADS 155#ifdef USE_ITHREADS
144
145static perl_mutex coro_lock;
146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD 156# if CORO_PTHREAD
149static void *coro_thx; 157static void *coro_thx;
150# endif 158# endif
151
152#else
153
154# define LOCK (void)0
155# define UNLOCK (void)0
156
157#endif 159#endif
158
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
163
164/* helper storage struct for Coro::AIO */
165struct io_state
166{
167 AV *res;
168 int errorno;
169 I32 laststype; /* U16 in 5.10.0 */
170 int laststatval;
171 Stat_t statcache;
172};
173 160
174static 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);
175 166
176static U32 cctx_gen; 167static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 171static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184
185struct transfer_args
186{
187 struct coro *prev, *next;
188};
189 174
190static GV *irsgv; /* $/ */ 175static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 176static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 177static SV *rv_diehook;
193static SV *rv_warnhook; 178static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */ 179static HV *hv_sig; /* %SIG */
195 180
196/* async_pool helper stuff */ 181/* async_pool helper stuff */
197static SV *sv_pool_rss; 182static SV *sv_pool_rss;
198static SV *sv_pool_size; 183static SV *sv_pool_size;
184static SV *sv_async_pool_idle;
199static AV *av_async_pool; 185static AV *av_async_pool;
186static SV *sv_Coro;
187static CV *cv_pool_handler;
188static CV *cv_coro_state_new;
200 189
201/* Coro::AnyEvent */ 190/* Coro::AnyEvent */
202static SV *sv_activity; 191static SV *sv_activity;
203 192
204static struct coro_cctx *cctx_first; 193static struct coro_cctx *cctx_first;
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 201 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 202 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 203};
215 204
216/* this is a structure representing a c-level coroutine */ 205/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 206typedef struct coro_cctx
207{
218 struct coro_cctx *next; 208 struct coro_cctx *next;
219 209
220 /* the stack */ 210 /* the stack */
221 void *sptr; 211 void *sptr;
222 size_t ssize; 212 size_t ssize;
… …
240 CF_NEW = 0x0004, /* has never been switched to */ 230 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 231 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
242}; 232};
243 233
244/* 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 */
245typedef struct { 235typedef struct
236{
246 SV *defsv; 237 SV *defsv;
247 AV *defav; 238 AV *defav;
248 SV *errsv; 239 SV *errsv;
249 SV *irsgv; 240 SV *irsgv;
250#define VAR(name,type) type name; 241#define VAR(name,type) type name;
… …
254 245
255#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))
256 247
257/* this is a structure representing a perl-level coroutine */ 248/* this is a structure representing a perl-level coroutine */
258struct coro { 249struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 250 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 251 coro_cctx *cctx;
261 252
262 /* process data */ 253 /* state data */
254 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 255 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 256 perl_slots *slot; /* basically the saved sp */
265 257
258 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 259 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 260 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 261 int flags; /* CF_ flags */
269 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);
270 264
271 /* statistics */ 265 /* statistics */
272 int usecount; /* number of transfers to this coro */ 266 int usecount; /* number of transfers to this coro */
273 267
274 /* coro process data */ 268 /* coro process data */
275 int prio; 269 int prio;
276 SV *throw; /* exception to be thrown */ 270 SV *except; /* exception to be thrown */
271 SV *rouse_cb;
277 272
278 /* async_pool */ 273 /* async_pool */
279 SV *saved_deffh; 274 SV *saved_deffh;
275 SV *invoke_cb;
276 AV *invoke_av;
280 277
281 /* linked list */ 278 /* linked list */
282 struct coro *next, *prev; 279 struct coro *next, *prev;
283}; 280};
284 281
285typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
286typedef 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 */
287 289
288/** Coro ********************************************************************/ 290/** Coro ********************************************************************/
289 291
290#define PRIO_MAX 3 292#define PRIO_MAX 3
291#define PRIO_HIGH 1 293#define PRIO_HIGH 1
… …
296 298
297/* for Coro.pm */ 299/* for Coro.pm */
298static SV *coro_current; 300static SV *coro_current;
299static SV *coro_readyhook; 301static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 302static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
301static int coro_nready; 303static CV *cv_coro_run, *cv_coro_terminate;
302static struct coro *coro_first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready
303 306
304/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
305 308
306static SV * 309static SV *
307coro_get_sv (pTHX_ const char *name, int create) 310coro_get_sv (pTHX_ const char *name, int create)
… …
329#if PERL_VERSION_ATLEAST (5,10,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
330 /* 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 */
331 get_hv (name, create); 334 get_hv (name, create);
332#endif 335#endif
333 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);
334} 346}
335 347
336static AV * 348static AV *
337coro_clone_padlist (pTHX_ CV *cv) 349coro_clone_padlist (pTHX_ CV *cv)
338{ 350{
… …
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 404 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 405
394 return 0; 406 return 0;
395} 407}
396 408
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext 409#define CORO_MAGIC_type_cv 26
398#define CORO_MAGIC_type_state PERL_MAGIC_ext 410#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 411
400static MGVTBL coro_cv_vtbl = { 412static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 413 0, 0, 0, 0,
402 coro_cv_free 414 coro_cv_free
403}; 415};
404 416
417#define CORO_MAGIC_NN(sv, type) \
418 (expect_true (SvMAGIC (sv)->mg_type == type) \
419 ? SvMAGIC (sv) \
420 : mg_find (sv, type))
421
405#define CORO_MAGIC(sv, type) \ 422#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \ 423 (expect_true (SvMAGIC (sv)) \
407 ? SvMAGIC (sv)->mg_type == type \ 424 ? CORO_MAGIC_NN (sv, type) \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0 425 : 0)
411 426
412#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)
413#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)
414 429
415INLINE struct coro * 430INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro) 431SvSTATE_ (pTHX_ SV *coro)
417{ 432{
418 HV *stash; 433 HV *stash;
… …
435 mg = CORO_MAGIC_state (coro); 450 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr; 451 return (struct coro *)mg->mg_ptr;
437} 452}
438 453
439#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))
440 459
441/* the next two functions merely cache the padlists */ 460/* the next two functions merely cache the padlists */
442static void 461static void
443get_padlist (pTHX_ CV *cv) 462get_padlist (pTHX_ CV *cv)
444{ 463{
… …
450 else 469 else
451 { 470 {
452#if CORO_PREFER_PERL_FUNCTIONS 471#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 472 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 473 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 474 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 475 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 476 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 477 SvREFCNT_dec (cp);
459#else 478#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 479 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
511 CvPADLIST (cv) = (AV *)POPs; 530 CvPADLIST (cv) = (AV *)POPs;
512 } 531 }
513 532
514 PUTBACK; 533 PUTBACK;
515 } 534 }
535
536 slf_frame = c->slf_frame;
537 CORO_THROW = c->except;
516} 538}
517 539
518static void 540static void
519save_perl (pTHX_ Coro__State c) 541save_perl (pTHX_ Coro__State c)
520{ 542{
543 c->except = CORO_THROW;
544 c->slf_frame = slf_frame;
545
521 { 546 {
522 dSP; 547 dSP;
523 I32 cxix = cxstack_ix; 548 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 549 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 550 PERL_SI *top_si = PL_curstackinfo;
… …
592 #undef VAR 617 #undef VAR
593 } 618 }
594} 619}
595 620
596/* 621/*
597 * allocate various perl stacks. This is an exact copy 622 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 623 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 624 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 625 * not usually need a lot of stackspace.
601 */ 626 */
602#if CORO_PREFER_PERL_FUNCTIONS 627#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 628# define coro_init_stacks(thx) init_stacks ()
604#else 629#else
605static void 630static void
606coro_init_stacks (pTHX) 631coro_init_stacks (pTHX)
607{ 632{
608 PL_curstackinfo = new_stackinfo(32, 8); 633 PL_curstackinfo = new_stackinfo(32, 8);
… …
671#if !PERL_VERSION_ATLEAST (5,10,0) 696#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 697 Safefree (PL_retstack);
673#endif 698#endif
674} 699}
675 700
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
676static size_t 710static size_t
677coro_rss (pTHX_ struct coro *coro) 711coro_rss (pTHX_ struct coro *coro)
678{ 712{
679 size_t rss = sizeof (*coro); 713 size_t rss = sizeof (*coro);
680 714
681 if (coro->mainstack) 715 if (coro->mainstack)
682 { 716 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 717 if (coro->flags & CF_RUNNING)
687 { 718 {
688 slot = &tmp_slot; 719 #define SYM(sym) PL_ ## sym
689 720 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 721 #undef SYM
693 } 722 }
694 else 723 else
695 slot = coro->slot;
696
697 if (slot)
698 { 724 {
699 rss += sizeof (slot->curstackinfo); 725 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 726 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 727 #undef SYM
702 rss += slot->tmps_max * sizeof (SV *);
703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
704 rss += slot->scopestack_max * sizeof (I32);
705 rss += slot->savestack_max * sizeof (ANY);
706
707#if !PERL_VERSION_ATLEAST (5,10,0)
708 rss += slot->retstack_max * sizeof (OP *);
709#endif
710 } 728 }
711 } 729 }
712 730
713 return rss; 731 return rss;
714}
715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we somtimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 SV **bot = SP;
728
729 int gimme = GIMME_V;
730
731 /* make sure we put something on the stack in scalar context */
732 if (gimme == G_SCALAR)
733 {
734 if (sp == bot)
735 XPUSHs (&PL_sv_undef);
736
737 SP = bot + 1;
738 }
739
740 PUTBACK;
741} 732}
742 733
743/** coroutine stack handling ************************************************/ 734/** coroutine stack handling ************************************************/
744 735
745static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 736static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
831 822
832 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 823 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
833} 824}
834 825
835static 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 */
836coro_setup (pTHX_ struct coro *coro) 842coro_setup (pTHX_ struct coro *coro)
837{ 843{
838 /* 844 /*
839 * emulate part of the perl startup here. 845 * emulate part of the perl startup here.
840 */ 846 */
… …
867 { 873 {
868 dSP; 874 dSP;
869 UNOP myop; 875 UNOP myop;
870 876
871 Zero (&myop, 1, UNOP); 877 Zero (&myop, 1, UNOP);
872 myop.op_next = Nullop; 878 myop.op_next = Nullop;
879 myop.op_type = OP_ENTERSUB;
873 myop.op_flags = OPf_WANT_VOID; 880 myop.op_flags = OPf_WANT_VOID;
874 881
875 PUSHMARK (SP); 882 PUSHMARK (SP);
876 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 883 PUSHs ((SV *)coro->startcv);
877 PUTBACK; 884 PUTBACK;
878 PL_op = (OP *)&myop; 885 PL_op = (OP *)&myop;
879 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 886 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
880 SPAGAIN;
881 } 887 }
882 888
883 /* 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
884 * 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.
885 * so we have to emulate entering pp_set_stacklevel here.
886 */ 891 */
887 SSL_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;
888} 905}
889 906
890static void 907static void
891coro_destruct (pTHX_ struct coro *coro) 908coro_destruct (pTHX_ struct coro *coro)
892{ 909{
… …
916 933
917 SvREFCNT_dec (PL_diehook); 934 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook); 935 SvREFCNT_dec (PL_warnhook);
919 936
920 SvREFCNT_dec (coro->saved_deffh); 937 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro->throw); 938 SvREFCNT_dec (coro->rouse_cb);
939 SvREFCNT_dec (coro->invoke_cb);
940 SvREFCNT_dec (coro->invoke_av);
922 941
923 coro_destruct_stacks (aTHX); 942 coro_destruct_stacks (aTHX);
924} 943}
925 944
926INLINE void 945INLINE void
… …
936static int 955static int
937runops_trace (pTHX) 956runops_trace (pTHX)
938{ 957{
939 COP *oldcop = 0; 958 COP *oldcop = 0;
940 int oldcxix = -2; 959 int oldcxix = -2;
941 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 */
942 coro_cctx *cctx = coro->cctx; 961 coro_cctx *cctx = coro->cctx;
943 962
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 963 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 964 {
946 PERL_ASYNC_CHECK (); 965 PERL_ASYNC_CHECK ();
… …
1013 SAVETMPS; 1032 SAVETMPS;
1014 EXTEND (SP, 3); 1033 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1034 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1035 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1036 PUSHs (fullname);
1018 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);
1019 PUTBACK; 1038 PUTBACK;
1020 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);
1021 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);
1022 SPAGAIN; 1041 SPAGAIN;
1023 FREETMPS; 1042 FREETMPS;
… …
1055 1074
1056 TAINT_NOT; 1075 TAINT_NOT;
1057 return 0; 1076 return 0;
1058} 1077}
1059 1078
1079static struct coro_cctx *cctx_ssl_cctx;
1080static struct CoroSLF cctx_ssl_frame;
1081
1060static void 1082static void
1061prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1083slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1062{ 1084{
1063 ta->prev = (struct coro *)cctx; 1085 ta->prev = (struct coro *)cctx_ssl_cctx;
1064 ta->next = 0; 1086 ta->next = 0;
1065} 1087}
1066 1088
1067/* inject a fake call to Coro::State::_cctx_init into the execution */ 1089static int
1068/* _cctx_init should be careful, as it could be called at almost any time */ 1090slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1069/* during execution of a perl program */ 1091{
1070/* 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 */
1071static void NOINLINE 1098static void NOINLINE
1072cctx_prepare (pTHX_ coro_cctx *cctx) 1099cctx_prepare (pTHX_ coro_cctx *cctx)
1073{ 1100{
1074 dSP;
1075 UNOP myop;
1076
1077 PL_top_env = &PL_start_env; 1101 PL_top_env = &PL_start_env;
1078 1102
1079 if (cctx->flags & CC_TRACE) 1103 if (cctx->flags & CC_TRACE)
1080 PL_runops = runops_trace; 1104 PL_runops = runops_trace;
1081 1105
1082 Zero (&myop, 1, UNOP); 1106 /* we already must be executing an SLF op, there is no other valid way
1083 myop.op_next = PL_op; 1107 * that can lead to creation of a new cctx */
1084 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));
1085 1110
1086 PUSHMARK (SP); 1111 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1087 EXTEND (SP, 2); 1112 cctx_ssl_cctx = cctx;
1088 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1113 cctx_ssl_frame = slf_frame;
1089 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1114
1090 PUTBACK; 1115 slf_frame.prepare = slf_prepare_set_stacklevel;
1091 PL_op = (OP *)&myop; 1116 slf_frame.check = slf_check_set_stacklevel;
1092 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1093 SPAGAIN;
1094} 1117}
1095 1118
1096/* 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 */
1097INLINE void 1120INLINE void
1098transfer_tail (pTHX) 1121transfer_tail (pTHX)
1099{ 1122{
1100 struct coro *next = (struct coro *)transfer_next;
1101 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1102 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1103
1104 free_coro_mortal (aTHX); 1123 free_coro_mortal (aTHX);
1105 UNLOCK;
1106
1107 if (expect_false (next->throw))
1108 {
1109 SV *exception = sv_2mortal (next->throw);
1110
1111 next->throw = 0;
1112 sv_setsv (ERRSV, exception);
1113 croak (0);
1114 }
1115} 1124}
1116 1125
1117/* 1126/*
1118 * this is a _very_ stripped down perl interpreter ;) 1127 * this is a _very_ stripped down perl interpreter ;)
1119 */ 1128 */
… …
1126# endif 1135# endif
1127#endif 1136#endif
1128 { 1137 {
1129 dTHX; 1138 dTHX;
1130 1139
1131 /* we are the alternative tail to pp_set_stacklevel */ 1140 /* normally we would need to skip the entersub here */
1132 /* so do the same things here */ 1141 /* not doing so will re-execute it, which is exactly what we want */
1133 SSL_TAIL;
1134
1135 /* we now skip the op that did lead to transfer() */
1136 PL_op = PL_op->op_next; 1142 /* PL_nop = PL_nop->op_next */
1137 1143
1138 /* inject a fake subroutine call to cctx_init */ 1144 /* inject a fake subroutine call to cctx_init */
1139 cctx_prepare (aTHX_ (coro_cctx *)arg); 1145 cctx_prepare (aTHX_ (coro_cctx *)arg);
1140 1146
1141 /* cctx_run is the alternative tail of transfer() */ 1147 /* cctx_run is the alternative tail of transfer() */
1142 transfer_tail (aTHX); 1148 transfer_tail (aTHX);
1143 1149
1144 /* 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 */
1145 PL_restartop = PL_op; 1151 PL_restartop = PL_op;
1146 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 */
1147 1157
1148 /* 1158 /*
1149 * 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
1150 * 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)
1151 * 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
… …
1302/** coroutine switching *****************************************************/ 1312/** coroutine switching *****************************************************/
1303 1313
1304static void 1314static void
1305transfer_check (pTHX_ struct coro *prev, struct coro *next) 1315transfer_check (pTHX_ struct coro *prev, struct coro *next)
1306{ 1316{
1317 /* TODO: throwing up here is considered harmful */
1318
1307 if (expect_true (prev != next)) 1319 if (expect_true (prev != next))
1308 { 1320 {
1309 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1321 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1310 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,");
1311 1323
1312 if (expect_false (next->flags & CF_RUNNING)) 1324 if (expect_false (next->flags & CF_RUNNING))
1313 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,");
1314 1326
1315 if (expect_false (next->flags & CF_DESTROYED)) 1327 if (expect_false (next->flags & CF_DESTROYED))
1316 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,");
1317 1329
1318#if !PERL_VERSION_ATLEAST (5,10,0) 1330#if !PERL_VERSION_ATLEAST (5,10,0)
1319 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1331 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1320 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,");
1321#endif 1333#endif
1322 } 1334 }
1323} 1335}
1324 1336
1325/* always use the TRANSFER macro */ 1337/* always use the TRANSFER macro */
1326static void NOINLINE 1338static void NOINLINE /* noinline so we have a fixed stackframe */
1327transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1339transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1328{ 1340{
1329 dSTACKLEVEL; 1341 dSTACKLEVEL;
1330 1342
1331 /* sometimes transfer is only called to set idle_sp */ 1343 /* sometimes transfer is only called to set idle_sp */
… …
1346 prev->flags |= CF_RUNNING; 1358 prev->flags |= CF_RUNNING;
1347 } 1359 }
1348 1360
1349 prev->flags &= ~CF_RUNNING; 1361 prev->flags &= ~CF_RUNNING;
1350 next->flags |= CF_RUNNING; 1362 next->flags |= CF_RUNNING;
1351
1352 LOCK;
1353 1363
1354 /* first get rid of the old state */ 1364 /* first get rid of the old state */
1355 save_perl (aTHX_ prev); 1365 save_perl (aTHX_ prev);
1356 1366
1357 if (expect_false (next->flags & CF_NEW)) 1367 if (expect_false (next->flags & CF_NEW))
… …
1371 prev__cctx->idle_sp == STACKLEVEL 1381 prev__cctx->idle_sp == STACKLEVEL
1372 && !(prev__cctx->flags & CC_TRACE) 1382 && !(prev__cctx->flags & CC_TRACE)
1373 && !force_cctx 1383 && !force_cctx
1374 )) 1384 ))
1375 { 1385 {
1376 /* 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 */
1377 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1387 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1378 1388
1379 prev->cctx = 0; 1389 prev->cctx = 0;
1380 1390
1381 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1391 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
… …
1389 1399
1390 ++next->usecount; 1400 ++next->usecount;
1391 1401
1392 if (expect_true (!next->cctx)) 1402 if (expect_true (!next->cctx))
1393 next->cctx = cctx_get (aTHX); 1403 next->cctx = cctx_get (aTHX);
1394
1395 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1396 transfer_next = next;
1397 1404
1398 if (expect_false (prev__cctx != next->cctx)) 1405 if (expect_false (prev__cctx != next->cctx))
1399 { 1406 {
1400 prev__cctx->top_env = PL_top_env; 1407 prev__cctx->top_env = PL_top_env;
1401 PL_top_env = next->cctx->top_env; 1408 PL_top_env = next->cctx->top_env;
… …
1415coro_state_destroy (pTHX_ struct coro *coro) 1422coro_state_destroy (pTHX_ struct coro *coro)
1416{ 1423{
1417 if (coro->flags & CF_DESTROYED) 1424 if (coro->flags & CF_DESTROYED)
1418 return 0; 1425 return 0;
1419 1426
1427 if (coro->on_destroy)
1428 coro->on_destroy (aTHX_ coro);
1429
1420 coro->flags |= CF_DESTROYED; 1430 coro->flags |= CF_DESTROYED;
1421 1431
1422 if (coro->flags & CF_READY) 1432 if (coro->flags & CF_READY)
1423 { 1433 {
1424 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1434 /* reduce nready, as destroying a ready coro effectively unreadies it */
1425 /* alternative: look through all ready queues and remove the coro */ 1435 /* alternative: look through all ready queues and remove the coro */
1426 LOCK;
1427 --coro_nready; 1436 --coro_nready;
1428 UNLOCK;
1429 } 1437 }
1430 else 1438 else
1431 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 */
1432 1440
1433 if (coro->mainstack && coro->mainstack != main_mainstack) 1441 if (coro->mainstack && coro->mainstack != main_mainstack)
1434 { 1442 {
1435 struct coro temp; 1443 struct coro temp;
1436 1444
1437 if (coro->flags & CF_RUNNING) 1445 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1438 croak ("FATAL: tried to destroy currently running coroutine");
1439 1446
1440 save_perl (aTHX_ &temp); 1447 save_perl (aTHX_ &temp);
1441 load_perl (aTHX_ coro); 1448 load_perl (aTHX_ coro);
1442 1449
1443 coro_destruct (aTHX_ coro); 1450 coro_destruct (aTHX_ coro);
… …
1446 1453
1447 coro->slot = 0; 1454 coro->slot = 0;
1448 } 1455 }
1449 1456
1450 cctx_destroy (coro->cctx); 1457 cctx_destroy (coro->cctx);
1458 SvREFCNT_dec (coro->startcv);
1451 SvREFCNT_dec (coro->args); 1459 SvREFCNT_dec (coro->args);
1460 SvREFCNT_dec (CORO_THROW);
1452 1461
1453 if (coro->next) coro->next->prev = coro->prev; 1462 if (coro->next) coro->next->prev = coro->prev;
1454 if (coro->prev) coro->prev->next = coro->next; 1463 if (coro->prev) coro->prev->next = coro->next;
1455 if (coro == coro_first) coro_first = coro->next; 1464 if (coro == coro_first) coro_first = coro->next;
1456 1465
… …
1494# define MGf_DUP 0 1503# define MGf_DUP 0
1495#endif 1504#endif
1496}; 1505};
1497 1506
1498static void 1507static void
1499prepare_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)
1500{ 1509{
1501 ta->prev = SvSTATE (prev_sv); 1510 ta->prev = SvSTATE (prev_sv);
1502 ta->next = SvSTATE (next_sv); 1511 ta->next = SvSTATE (next_sv);
1503 TRANSFER_CHECK (*ta); 1512 TRANSFER_CHECK (*ta);
1504} 1513}
1505 1514
1506static void 1515static void
1507api_transfer (SV *prev_sv, SV *next_sv) 1516api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1508{ 1517{
1509 dTHX;
1510 struct transfer_args ta; 1518 struct coro_transfer_args ta;
1511 1519
1512 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1520 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1513 TRANSFER (ta, 1); 1521 TRANSFER (ta, 1);
1514} 1522}
1515 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
1516/** Coro ********************************************************************/ 1547/** Coro ********************************************************************/
1517 1548
1518static void 1549INLINE void
1519coro_enq (pTHX_ SV *coro_sv) 1550coro_enq (pTHX_ struct coro *coro)
1520{ 1551{
1521 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));
1522} 1553}
1523 1554
1524static SV * 1555INLINE SV *
1525coro_deq (pTHX) 1556coro_deq (pTHX)
1526{ 1557{
1527 int prio; 1558 int prio;
1528 1559
1529 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1560 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1532 1563
1533 return 0; 1564 return 0;
1534} 1565}
1535 1566
1536static int 1567static int
1537api_ready (SV *coro_sv) 1568api_ready (pTHX_ SV *coro_sv)
1538{ 1569{
1539 dTHX;
1540 struct coro *coro; 1570 struct coro *coro;
1541 SV *sv_hook; 1571 SV *sv_hook;
1542 void (*xs_hook)(void); 1572 void (*xs_hook)(void);
1543 1573
1544 if (SvROK (coro_sv)) 1574 if (SvROK (coro_sv))
… …
1549 if (coro->flags & CF_READY) 1579 if (coro->flags & CF_READY)
1550 return 0; 1580 return 0;
1551 1581
1552 coro->flags |= CF_READY; 1582 coro->flags |= CF_READY;
1553 1583
1554 LOCK;
1555
1556 sv_hook = coro_nready ? 0 : coro_readyhook; 1584 sv_hook = coro_nready ? 0 : coro_readyhook;
1557 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1585 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1558 1586
1559 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1587 coro_enq (aTHX_ coro);
1560 ++coro_nready; 1588 ++coro_nready;
1561 1589
1562 UNLOCK;
1563
1564 if (sv_hook) 1590 if (sv_hook)
1565 { 1591 {
1566 dSP; 1592 dSP;
1567 1593
1568 ENTER; 1594 ENTER;
1569 SAVETMPS; 1595 SAVETMPS;
1570 1596
1571 PUSHMARK (SP); 1597 PUSHMARK (SP);
1572 PUTBACK; 1598 PUTBACK;
1573 call_sv (sv_hook, G_DISCARD); 1599 call_sv (sv_hook, G_VOID | G_DISCARD);
1574 SPAGAIN;
1575 1600
1576 FREETMPS; 1601 FREETMPS;
1577 LEAVE; 1602 LEAVE;
1578 } 1603 }
1579 1604
… …
1582 1607
1583 return 1; 1608 return 1;
1584} 1609}
1585 1610
1586static int 1611static int
1587api_is_ready (SV *coro_sv) 1612api_is_ready (pTHX_ SV *coro_sv)
1588{ 1613{
1589 dTHX;
1590
1591 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1614 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1592} 1615}
1593 1616
1617/* expects to own a reference to next->hv */
1594INLINE void 1618INLINE void
1619prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1620{
1621 SV *prev_sv = SvRV (coro_current);
1622
1623 ta->prev = SvSTATE_hv (prev_sv);
1624 ta->next = next;
1625
1626 TRANSFER_CHECK (*ta);
1627
1628 SvRV_set (coro_current, (SV *)next->hv);
1629
1630 free_coro_mortal (aTHX);
1631 coro_mortal = prev_sv;
1632}
1633
1634static void
1595prepare_schedule (pTHX_ struct transfer_args *ta) 1635prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1596{ 1636{
1597 SV *prev_sv, *next_sv;
1598
1599 for (;;) 1637 for (;;)
1600 { 1638 {
1601 LOCK;
1602 next_sv = coro_deq (aTHX); 1639 SV *next_sv = coro_deq (aTHX);
1603 1640
1604 /* nothing to schedule: call the idle handler */
1605 if (expect_false (!next_sv)) 1641 if (expect_true (next_sv))
1606 { 1642 {
1643 struct coro *next = SvSTATE_hv (next_sv);
1644
1645 /* cannot transfer to destroyed coros, skip and look for next */
1646 if (expect_false (next->flags & CF_DESTROYED))
1647 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1648 else
1649 {
1650 next->flags &= ~CF_READY;
1651 --coro_nready;
1652
1653 return prepare_schedule_to (aTHX_ ta, next);
1654 }
1655 }
1656 else
1657 {
1658 /* nothing to schedule: call the idle handler */
1607 dSP; 1659 dSP;
1608 UNLOCK;
1609 1660
1610 ENTER; 1661 ENTER;
1611 SAVETMPS; 1662 SAVETMPS;
1612 1663
1613 PUSHMARK (SP); 1664 PUSHMARK (SP);
1614 PUTBACK; 1665 PUTBACK;
1615 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1666 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1616 SPAGAIN;
1617 1667
1618 FREETMPS; 1668 FREETMPS;
1619 LEAVE; 1669 LEAVE;
1620 continue;
1621 } 1670 }
1622
1623 ta->next = SvSTATE (next_sv);
1624
1625 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 {
1628 UNLOCK;
1629 SvREFCNT_dec (next_sv);
1630 /* coro_nready has already been taken care of by destroy */
1631 continue;
1632 }
1633
1634 --coro_nready;
1635 UNLOCK;
1636 break;
1637 } 1671 }
1638
1639 /* free this only after the transfer */
1640 prev_sv = SvRV (coro_current);
1641 ta->prev = SvSTATE (prev_sv);
1642 TRANSFER_CHECK (*ta);
1643 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1644 ta->next->flags &= ~CF_READY;
1645 SvRV_set (coro_current, next_sv);
1646
1647 LOCK;
1648 free_coro_mortal (aTHX);
1649 coro_mortal = prev_sv;
1650 UNLOCK;
1651} 1672}
1652 1673
1653INLINE void 1674INLINE void
1654prepare_cede (pTHX_ struct transfer_args *ta) 1675prepare_cede (pTHX_ struct coro_transfer_args *ta)
1655{ 1676{
1656 api_ready (coro_current); 1677 api_ready (aTHX_ coro_current);
1657 prepare_schedule (aTHX_ ta); 1678 prepare_schedule (aTHX_ ta);
1658} 1679}
1659 1680
1681INLINE void
1682prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1683{
1684 SV *prev = SvRV (coro_current);
1685
1686 if (coro_nready)
1687 {
1688 prepare_schedule (aTHX_ ta);
1689 api_ready (aTHX_ prev);
1690 }
1691 else
1692 prepare_nop (aTHX_ ta);
1693}
1694
1695static void
1696api_schedule (pTHX)
1697{
1698 struct coro_transfer_args ta;
1699
1700 prepare_schedule (aTHX_ &ta);
1701 TRANSFER (ta, 1);
1702}
1703
1704static void
1705api_schedule_to (pTHX_ SV *coro_sv)
1706{
1707 struct coro_transfer_args ta;
1708 struct coro *next = SvSTATE (coro_sv);
1709
1710 SvREFCNT_inc_NN (coro_sv);
1711 prepare_schedule_to (aTHX_ &ta, next);
1712}
1713
1660static int 1714static int
1661prepare_cede_notself (pTHX_ struct transfer_args *ta) 1715api_cede (pTHX)
1662{ 1716{
1663 if (coro_nready) 1717 struct coro_transfer_args ta;
1664 { 1718
1665 SV *prev = SvRV (coro_current);
1666 prepare_schedule (aTHX_ ta); 1719 prepare_cede (aTHX_ &ta);
1667 api_ready (prev); 1720
1721 if (expect_true (ta.prev != ta.next))
1722 {
1723 TRANSFER (ta, 1);
1668 return 1; 1724 return 1;
1669 } 1725 }
1670 else 1726 else
1671 return 0; 1727 return 0;
1672} 1728}
1673 1729
1674static void
1675api_schedule (void)
1676{
1677 dTHX;
1678 struct transfer_args ta;
1679
1680 prepare_schedule (aTHX_ &ta);
1681 TRANSFER (ta, 1);
1682}
1683
1684static int 1730static int
1685api_cede (void) 1731api_cede_notself (pTHX)
1686{ 1732{
1687 dTHX; 1733 if (coro_nready)
1734 {
1688 struct transfer_args ta; 1735 struct coro_transfer_args ta;
1689 1736
1690 prepare_cede (aTHX_ &ta); 1737 prepare_cede_notself (aTHX_ &ta);
1691
1692 if (expect_true (ta.prev != ta.next))
1693 {
1694 TRANSFER (ta, 1); 1738 TRANSFER (ta, 1);
1695 return 1; 1739 return 1;
1696 } 1740 }
1697 else 1741 else
1698 return 0; 1742 return 0;
1699} 1743}
1700 1744
1701static int 1745static void
1702api_cede_notself (void)
1703{
1704 dTHX;
1705 struct transfer_args ta;
1706
1707 if (prepare_cede_notself (aTHX_ &ta))
1708 {
1709 TRANSFER (ta, 1);
1710 return 1;
1711 }
1712 else
1713 return 0;
1714}
1715
1716static void
1717api_trace (SV *coro_sv, int flags) 1746api_trace (pTHX_ SV *coro_sv, int flags)
1718{ 1747{
1719 dTHX;
1720 struct coro *coro = SvSTATE (coro_sv); 1748 struct coro *coro = SvSTATE (coro_sv);
1721 1749
1722 if (flags & CC_TRACE) 1750 if (flags & CC_TRACE)
1723 { 1751 {
1724 if (!coro->cctx) 1752 if (!coro->cctx)
1725 coro->cctx = cctx_new_run (); 1753 coro->cctx = cctx_new_run ();
1726 else if (!(coro->cctx->flags & CC_TRACE)) 1754 else if (!(coro->cctx->flags & CC_TRACE))
1727 croak ("cannot enable tracing on coroutine with custom stack"); 1755 croak ("cannot enable tracing on coroutine with custom stack,");
1728 1756
1729 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1757 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1730 } 1758 }
1731 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1759 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1732 { 1760 {
… …
1737 else 1765 else
1738 coro->slot->runops = RUNOPS_DEFAULT; 1766 coro->slot->runops = RUNOPS_DEFAULT;
1739 } 1767 }
1740} 1768}
1741 1769
1742#if 0 1770/*****************************************************************************/
1771/* async pool handler */
1772
1743static int 1773static int
1744coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1774slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1745{ 1775{
1746 AV *padlist; 1776 HV *hv = (HV *)SvRV (coro_current);
1747 AV *av = (AV *)mg->mg_obj; 1777 struct coro *coro = (struct coro *)frame->data;
1748 1778
1749 abort (); 1779 if (!coro->invoke_cb)
1780 return 1; /* loop till we have invoke */
1781 else
1782 {
1783 hv_store (hv, "desc", sizeof ("desc") - 1,
1784 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1785
1786 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1787
1788 {
1789 dSP;
1790 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1791 PUTBACK;
1792 }
1793
1794 SvREFCNT_dec (GvAV (PL_defgv));
1795 GvAV (PL_defgv) = coro->invoke_av;
1796 coro->invoke_av = 0;
1797
1798 return 0;
1799 }
1800}
1801
1802static void
1803slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1804{
1805 HV *hv = (HV *)SvRV (coro_current);
1806 struct coro *coro = SvSTATE_hv ((SV *)hv);
1807
1808 if (expect_true (coro->saved_deffh))
1809 {
1810 /* subsequent iteration */
1811 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1812 coro->saved_deffh = 0;
1813
1814 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1815 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1816 {
1817 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1818 coro->invoke_av = newAV ();
1819
1820 frame->prepare = prepare_nop;
1821 }
1822 else
1823 {
1824 av_clear (GvAV (PL_defgv));
1825 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1826
1827 coro->prio = 0;
1828
1829 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1830 api_trace (aTHX_ coro_current, 0);
1831
1832 frame->prepare = prepare_schedule;
1833 av_push (av_async_pool, SvREFCNT_inc (hv));
1834 }
1835 }
1836 else
1837 {
1838 /* first iteration, simply fall through */
1839 frame->prepare = prepare_nop;
1840 }
1841
1842 frame->check = slf_check_pool_handler;
1843 frame->data = (void *)coro;
1844}
1845
1846/*****************************************************************************/
1847/* rouse callback */
1848
1849#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1850
1851static void
1852coro_rouse_callback (pTHX_ CV *cv)
1853{
1854 dXSARGS;
1855 SV *data = (SV *)GENSUB_ARG;
1856
1857 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1858 {
1859 /* first call, set args */
1860 AV *av = newAV ();
1861 SV *coro = SvRV (data);
1862
1863 SvRV_set (data, (SV *)av);
1864 api_ready (aTHX_ coro);
1865 SvREFCNT_dec (coro);
1866
1867 /* better take a full copy of the arguments */
1868 while (items--)
1869 av_store (av, items, newSVsv (ST (items)));
1870 }
1871
1872 XSRETURN_EMPTY;
1873}
1874
1875static int
1876slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1877{
1878 SV *data = (SV *)frame->data;
1879
1880 if (CORO_THROW)
1881 return 0;
1882
1883 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1884 return 1;
1885
1886 /* now push all results on the stack */
1887 {
1888 dSP;
1889 AV *av = (AV *)SvRV (data);
1890 int i;
1891
1892 EXTEND (SP, AvFILLp (av) + 1);
1893 for (i = 0; i <= AvFILLp (av); ++i)
1894 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1895
1896 /* we have stolen the elements, so ste length to zero and free */
1897 AvFILLp (av) = -1;
1898 av_undef (av);
1899
1900 PUTBACK;
1901 }
1750 1902
1751 return 0; 1903 return 0;
1752} 1904}
1753 1905
1754static MGVTBL coro_gensub_vtbl = { 1906static void
1755 0, 0, 0, 0, 1907slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1756 coro_gensub_free 1908{
1757}; 1909 SV *cb;
1758#endif 1910
1911 if (items)
1912 cb = arg [0];
1913 else
1914 {
1915 struct coro *coro = SvSTATE_current;
1916
1917 if (!coro->rouse_cb)
1918 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1919
1920 cb = sv_2mortal (coro->rouse_cb);
1921 coro->rouse_cb = 0;
1922 }
1923
1924 if (!SvROK (cb)
1925 || SvTYPE (SvRV (cb)) != SVt_PVCV
1926 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1927 croak ("Coro::rouse_wait called with illegal callback argument,");
1928
1929 {
1930 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1931 SV *data = (SV *)GENSUB_ARG;
1932
1933 frame->data = (void *)data;
1934 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1935 frame->check = slf_check_rouse_wait;
1936 }
1937}
1938
1939static SV *
1940coro_new_rouse_cb (pTHX)
1941{
1942 HV *hv = (HV *)SvRV (coro_current);
1943 struct coro *coro = SvSTATE_hv (hv);
1944 SV *data = newRV_inc ((SV *)hv);
1945 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1946
1947 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1948 SvREFCNT_dec (data); /* magicext increases the refcount */
1949
1950 SvREFCNT_dec (coro->rouse_cb);
1951 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1952
1953 return cb;
1954}
1955
1956/*****************************************************************************/
1957/* schedule-like-function opcode (SLF) */
1958
1959static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1960static const CV *slf_cv;
1961static SV **slf_argv;
1962static int slf_argc, slf_arga; /* count, allocated */
1963static I32 slf_ax; /* top of stack, for restore */
1964
1965/* this restores the stack in the case we patched the entersub, to */
1966/* recreate the stack frame as perl will on following calls */
1967/* since entersub cleared the stack */
1968static OP *
1969pp_restore (pTHX)
1970{
1971 int i;
1972 SV **SP = PL_stack_base + slf_ax;
1973
1974 PUSHMARK (SP);
1975
1976 EXTEND (SP, slf_argc + 1);
1977
1978 for (i = 0; i < slf_argc; ++i)
1979 PUSHs (sv_2mortal (slf_argv [i]));
1980
1981 PUSHs ((SV *)CvGV (slf_cv));
1982
1983 RETURNOP (slf_restore.op_first);
1984}
1985
1986static void
1987slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1988{
1989 SV **arg = (SV **)slf_frame.data;
1990
1991 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1992}
1993
1994static void
1995slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1996{
1997 if (items != 2)
1998 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1999
2000 frame->prepare = slf_prepare_transfer;
2001 frame->check = slf_check_nop;
2002 frame->data = (void *)arg; /* let's hope it will stay valid */
2003}
2004
2005static void
2006slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2007{
2008 frame->prepare = prepare_schedule;
2009 frame->check = slf_check_nop;
2010}
2011
2012static void
2013slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2014{
2015 struct coro *next = (struct coro *)slf_frame.data;
2016
2017 SvREFCNT_inc_NN (next->hv);
2018 prepare_schedule_to (aTHX_ ta, next);
2019}
2020
2021static void
2022slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2023{
2024 if (!items)
2025 croak ("Coro::schedule_to expects a coroutine argument, caught");
2026
2027 frame->data = (void *)SvSTATE (arg [0]);
2028 frame->prepare = slf_prepare_schedule_to;
2029 frame->check = slf_check_nop;
2030}
2031
2032static void
2033slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2034{
2035 api_ready (aTHX_ SvRV (coro_current));
2036
2037 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2038}
2039
2040static void
2041slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2042{
2043 frame->prepare = prepare_cede;
2044 frame->check = slf_check_nop;
2045}
2046
2047static void
2048slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{
2050 frame->prepare = prepare_cede_notself;
2051 frame->check = slf_check_nop;
2052}
2053
2054/*
2055 * these not obviously related functions are all rolled into one
2056 * function to increase chances that they all will call transfer with the same
2057 * stack offset
2058 * SLF stands for "schedule-like-function".
2059 */
2060static OP *
2061pp_slf (pTHX)
2062{
2063 I32 checkmark; /* mark SP to see how many elements check has pushed */
2064
2065 /* set up the slf frame, unless it has already been set-up */
2066 /* the latter happens when a new coro has been started */
2067 /* or when a new cctx was attached to an existing coroutine */
2068 if (expect_true (!slf_frame.prepare))
2069 {
2070 /* first iteration */
2071 dSP;
2072 SV **arg = PL_stack_base + TOPMARK + 1;
2073 int items = SP - arg; /* args without function object */
2074 SV *gv = *sp;
2075
2076 /* do a quick consistency check on the "function" object, and if it isn't */
2077 /* for us, divert to the real entersub */
2078 if (SvTYPE (gv) != SVt_PVGV
2079 || !GvCV (gv)
2080 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2081 return PL_ppaddr[OP_ENTERSUB](aTHX);
2082
2083 if (!(PL_op->op_flags & OPf_STACKED))
2084 {
2085 /* ampersand-form of call, use @_ instead of stack */
2086 AV *av = GvAV (PL_defgv);
2087 arg = AvARRAY (av);
2088 items = AvFILLp (av) + 1;
2089 }
2090
2091 /* now call the init function, which needs to set up slf_frame */
2092 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2093 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2094
2095 /* pop args */
2096 SP = PL_stack_base + POPMARK;
2097
2098 PUTBACK;
2099 }
2100
2101 /* now that we have a slf_frame, interpret it! */
2102 /* we use a callback system not to make the code needlessly */
2103 /* complicated, but so we can run multiple perl coros from one cctx */
2104
2105 do
2106 {
2107 struct coro_transfer_args ta;
2108
2109 slf_frame.prepare (aTHX_ &ta);
2110 TRANSFER (ta, 0);
2111
2112 checkmark = PL_stack_sp - PL_stack_base;
2113 }
2114 while (slf_frame.check (aTHX_ &slf_frame));
2115
2116 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2117
2118 /* exception handling */
2119 if (expect_false (CORO_THROW))
2120 {
2121 SV *exception = sv_2mortal (CORO_THROW);
2122
2123 CORO_THROW = 0;
2124 sv_setsv (ERRSV, exception);
2125 croak (0);
2126 }
2127
2128 /* return value handling - mostly like entersub */
2129 /* make sure we put something on the stack in scalar context */
2130 if (GIMME_V == G_SCALAR)
2131 {
2132 dSP;
2133 SV **bot = PL_stack_base + checkmark;
2134
2135 if (sp == bot) /* too few, push undef */
2136 bot [1] = &PL_sv_undef;
2137 else if (sp != bot + 1) /* too many, take last one */
2138 bot [1] = *sp;
2139
2140 SP = bot + 1;
2141
2142 PUTBACK;
2143 }
2144
2145 return NORMAL;
2146}
2147
2148static void
2149api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2150{
2151 int i;
2152 SV **arg = PL_stack_base + ax;
2153 int items = PL_stack_sp - arg + 1;
2154
2155 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2156
2157 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2158 && PL_op->op_ppaddr != pp_slf)
2159 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2160
2161 CvFLAGS (cv) |= CVf_SLF;
2162 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2163 slf_cv = cv;
2164
2165 /* we patch the op, and then re-run the whole call */
2166 /* we have to put the same argument on the stack for this to work */
2167 /* and this will be done by pp_restore */
2168 slf_restore.op_next = (OP *)&slf_restore;
2169 slf_restore.op_type = OP_CUSTOM;
2170 slf_restore.op_ppaddr = pp_restore;
2171 slf_restore.op_first = PL_op;
2172
2173 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2174
2175 if (PL_op->op_flags & OPf_STACKED)
2176 {
2177 if (items > slf_arga)
2178 {
2179 slf_arga = items;
2180 free (slf_argv);
2181 slf_argv = malloc (slf_arga * sizeof (SV *));
2182 }
2183
2184 slf_argc = items;
2185
2186 for (i = 0; i < items; ++i)
2187 slf_argv [i] = SvREFCNT_inc (arg [i]);
2188 }
2189 else
2190 slf_argc = 0;
2191
2192 PL_op->op_ppaddr = pp_slf;
2193 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2194
2195 PL_op = (OP *)&slf_restore;
2196}
1759 2197
1760/*****************************************************************************/ 2198/*****************************************************************************/
1761/* PerlIO::cede */ 2199/* PerlIO::cede */
1762 2200
1763typedef struct 2201typedef struct
… …
1791 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2229 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1792 double now = nvtime (); 2230 double now = nvtime ();
1793 2231
1794 if (now >= self->next) 2232 if (now >= self->next)
1795 { 2233 {
1796 api_cede (); 2234 api_cede (aTHX);
1797 self->next = now + self->every; 2235 self->next = now + self->every;
1798 } 2236 }
1799 2237
1800 return PerlIOBuf_flush (aTHX_ f); 2238 return PerlIOBuf_flush (aTHX_ f);
1801} 2239}
… …
1831 PerlIOBuf_get_cnt, 2269 PerlIOBuf_get_cnt,
1832 PerlIOBuf_set_ptrcnt, 2270 PerlIOBuf_set_ptrcnt,
1833}; 2271};
1834 2272
1835/*****************************************************************************/ 2273/*****************************************************************************/
2274/* Coro::Semaphore & Coro::Signal */
1836 2275
1837static const CV *ssl_cv; /* for quick consistency check */
1838
1839static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1840static SV *ssl_arg0;
1841static SV *ssl_arg1;
1842
1843/* this restores the stack in the case we patched the entersub, to */
1844/* recreate the stack frame as perl will on following calls */
1845/* since entersub cleared the stack */
1846static OP * 2276static SV *
1847pp_restore (pTHX) 2277coro_waitarray_new (pTHX_ int count)
1848{ 2278{
2279 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2280 AV *av = newAV ();
2281 SV **ary;
2282
2283 /* unfortunately, building manually saves memory */
2284 Newx (ary, 2, SV *);
2285 AvALLOC (av) = ary;
2286 /*AvARRAY (av) = ary;*/
2287 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2288 AvMAX (av) = 1;
2289 AvFILLp (av) = 0;
2290 ary [0] = newSViv (count);
2291
2292 return newRV_noinc ((SV *)av);
2293}
2294
2295/* semaphore */
2296
2297static void
2298coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2299{
2300 SV *count_sv = AvARRAY (av)[0];
2301 IV count = SvIVX (count_sv);
2302
2303 count += adjust;
2304 SvIVX (count_sv) = count;
2305
2306 /* now wake up as many waiters as are expected to lock */
2307 while (count > 0 && AvFILLp (av) > 0)
2308 {
2309 SV *cb;
2310
2311 /* swap first two elements so we can shift a waiter */
2312 AvARRAY (av)[0] = AvARRAY (av)[1];
2313 AvARRAY (av)[1] = count_sv;
2314 cb = av_shift (av);
2315
2316 if (SvOBJECT (cb))
2317 {
2318 api_ready (aTHX_ cb);
2319 --count;
2320 }
2321 else if (SvTYPE (cb) == SVt_PVCV)
2322 {
2323 dSP;
2324 PUSHMARK (SP);
2325 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2326 PUTBACK;
2327 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2328 }
2329
2330 SvREFCNT_dec (cb);
2331 }
2332}
2333
2334static void
2335coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2336{
2337 /* call $sem->adjust (0) to possibly wake up some other waiters */
2338 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2339}
2340
2341static int
2342slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2343{
2344 AV *av = (AV *)frame->data;
2345 SV *count_sv = AvARRAY (av)[0];
2346
2347 /* if we are about to throw, don't actually acquire the lock, just throw */
2348 if (CORO_THROW)
2349 return 0;
2350 else if (SvIVX (count_sv) > 0)
2351 {
2352 SvSTATE_current->on_destroy = 0;
2353
2354 if (acquire)
2355 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2356 else
2357 coro_semaphore_adjust (aTHX_ av, 0);
2358
2359 return 0;
2360 }
2361 else
2362 {
2363 int i;
2364 /* if we were woken up but can't down, we look through the whole */
2365 /* waiters list and only add us if we aren't in there already */
2366 /* this avoids some degenerate memory usage cases */
2367
2368 for (i = 1; i <= AvFILLp (av); ++i)
2369 if (AvARRAY (av)[i] == SvRV (coro_current))
2370 return 1;
2371
2372 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2373 return 1;
2374 }
2375}
2376
2377static int
2378slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2379{
2380 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2381}
2382
2383static int
2384slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2385{
2386 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2387}
2388
2389static void
2390slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2391{
2392 AV *av = (AV *)SvRV (arg [0]);
2393
2394 if (SvIVX (AvARRAY (av)[0]) > 0)
2395 {
2396 frame->data = (void *)av;
2397 frame->prepare = prepare_nop;
2398 }
2399 else
2400 {
2401 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2402
2403 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2404 frame->prepare = prepare_schedule;
2405
2406 /* to avoid race conditions when a woken-up coro gets terminated */
2407 /* we arrange for a temporary on_destroy that calls adjust (0) */
2408 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2409 }
2410}
2411
2412static void
2413slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2414{
2415 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2416 frame->check = slf_check_semaphore_down;
2417}
2418
2419static void
2420slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2421{
2422 if (items >= 2)
2423 {
2424 /* callback form */
2425 AV *av = (AV *)SvRV (arg [0]);
2426 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2427
2428 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2429
2430 if (SvIVX (AvARRAY (av)[0]) > 0)
2431 coro_semaphore_adjust (aTHX_ av, 0);
2432
2433 frame->prepare = prepare_nop;
2434 frame->check = slf_check_nop;
2435 }
2436 else
2437 {
2438 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2439 frame->check = slf_check_semaphore_wait;
2440 }
2441}
2442
2443/* signal */
2444
2445static void
2446coro_signal_wake (pTHX_ AV *av, int count)
2447{
2448 SvIVX (AvARRAY (av)[0]) = 0;
2449
2450 /* now signal count waiters */
2451 while (count > 0 && AvFILLp (av) > 0)
2452 {
2453 SV *cb;
2454
2455 /* swap first two elements so we can shift a waiter */
2456 cb = AvARRAY (av)[0];
2457 AvARRAY (av)[0] = AvARRAY (av)[1];
2458 AvARRAY (av)[1] = cb;
2459
2460 cb = av_shift (av);
2461
2462 api_ready (aTHX_ cb);
2463 sv_setiv (cb, 0); /* signal waiter */
2464 SvREFCNT_dec (cb);
2465
2466 --count;
2467 }
2468}
2469
2470static int
2471slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2472{
2473 /* if we are about to throw, also stop waiting */
2474 return SvROK ((SV *)frame->data) && !CORO_THROW;
2475}
2476
2477static void
2478slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2479{
2480 AV *av = (AV *)SvRV (arg [0]);
2481
2482 if (SvIVX (AvARRAY (av)[0]))
2483 {
2484 SvIVX (AvARRAY (av)[0]) = 0;
2485 frame->prepare = prepare_nop;
2486 frame->check = slf_check_nop;
2487 }
2488 else
2489 {
2490 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2491
2492 av_push (av, waiter);
2493
2494 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2495 frame->prepare = prepare_schedule;
2496 frame->check = slf_check_signal_wait;
2497 }
2498}
2499
2500/*****************************************************************************/
2501/* Coro::AIO */
2502
2503#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2504
2505/* helper storage struct */
2506struct io_state
2507{
2508 int errorno;
2509 I32 laststype; /* U16 in 5.10.0 */
2510 int laststatval;
2511 Stat_t statcache;
2512};
2513
2514static void
2515coro_aio_callback (pTHX_ CV *cv)
2516{
2517 dXSARGS;
2518 AV *state = (AV *)GENSUB_ARG;
2519 SV *coro = av_pop (state);
2520 SV *data_sv = newSV (sizeof (struct io_state));
2521
2522 av_extend (state, items - 1);
2523
2524 sv_upgrade (data_sv, SVt_PV);
2525 SvCUR_set (data_sv, sizeof (struct io_state));
2526 SvPOK_only (data_sv);
2527
2528 {
2529 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2530
2531 data->errorno = errno;
2532 data->laststype = PL_laststype;
2533 data->laststatval = PL_laststatval;
2534 data->statcache = PL_statcache;
2535 }
2536
2537 /* now build the result vector out of all the parameters and the data_sv */
2538 {
2539 int i;
2540
2541 for (i = 0; i < items; ++i)
2542 av_push (state, SvREFCNT_inc_NN (ST (i)));
2543 }
2544
2545 av_push (state, data_sv);
2546
2547 api_ready (aTHX_ coro);
2548 SvREFCNT_dec (coro);
2549 SvREFCNT_dec ((AV *)state);
2550}
2551
2552static int
2553slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2554{
2555 AV *state = (AV *)frame->data;
2556
2557 /* if we are about to throw, return early */
2558 /* this does not cancel the aio request, but at least */
2559 /* it quickly returns */
2560 if (CORO_THROW)
2561 return 0;
2562
2563 /* one element that is an RV? repeat! */
2564 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2565 return 1;
2566
2567 /* restore status */
2568 {
2569 SV *data_sv = av_pop (state);
2570 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2571
2572 errno = data->errorno;
2573 PL_laststype = data->laststype;
2574 PL_laststatval = data->laststatval;
2575 PL_statcache = data->statcache;
2576
2577 SvREFCNT_dec (data_sv);
2578 }
2579
2580 /* push result values */
2581 {
1849 dSP; 2582 dSP;
2583 int i;
1850 2584
2585 EXTEND (SP, AvFILLp (state) + 1);
2586 for (i = 0; i <= AvFILLp (state); ++i)
2587 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2588
2589 PUTBACK;
2590 }
2591
2592 return 0;
2593}
2594
2595static void
2596slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2597{
2598 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2599 SV *coro_hv = SvRV (coro_current);
2600 struct coro *coro = SvSTATE_hv (coro_hv);
2601
2602 /* put our coroutine id on the state arg */
2603 av_push (state, SvREFCNT_inc_NN (coro_hv));
2604
2605 /* first see whether we have a non-zero priority and set it as AIO prio */
2606 if (coro->prio)
2607 {
2608 dSP;
2609
2610 static SV *prio_cv;
2611 static SV *prio_sv;
2612
2613 if (expect_false (!prio_cv))
2614 {
2615 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2616 prio_sv = newSViv (0);
2617 }
2618
2619 PUSHMARK (SP);
2620 sv_setiv (prio_sv, coro->prio);
2621 XPUSHs (prio_sv);
2622
2623 PUTBACK;
2624 call_sv (prio_cv, G_VOID | G_DISCARD);
2625 }
2626
2627 /* now call the original request */
2628 {
2629 dSP;
2630 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2631 int i;
2632
1851 PUSHMARK (SP); 2633 PUSHMARK (SP);
1852 2634
1853 EXTEND (SP, 3); 2635 /* first push all args to the stack */
1854 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2636 EXTEND (SP, items + 1);
1855 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1856 PUSHs ((SV *)CvGV (ssl_cv));
1857 2637
1858 RETURNOP (ssl_restore.op_first); 2638 for (i = 0; i < items; ++i)
1859} 2639 PUSHs (arg [i]);
1860 2640
1861/* declare prototype */ 2641 /* now push the callback closure */
1862XS(XS_Coro__State__set_stacklevel); 2642 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1863 2643
1864#define OPpENTERSUB_SSL 15 2644 /* now call the AIO function - we assume our request is uncancelable */
1865
1866static OP *
1867pp_set_stacklevel (pTHX)
1868{
1869 dSP;
1870 struct transfer_args ta;
1871 SV **arg = PL_stack_base + TOPMARK + 1;
1872 int items = SP - arg; /* args without function object */
1873
1874 /* do a quick consistency check on the "function" object, and if it isn't */
1875 /* for us, divert to the real entersub */
1876 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1877 return PL_ppaddr[OP_ENTERSUB](aTHX);
1878
1879 /* pop args */
1880 SP = PL_stack_base + POPMARK;
1881
1882 if (!(PL_op->op_flags & OPf_STACKED))
1883 {
1884 /* ampersand-form of call, use @_ instead of stack */
1885 AV *av = GvAV (PL_defgv);
1886 arg = AvARRAY (av);
1887 items = AvFILLp (av) + 1;
1888 }
1889
1890 PUTBACK; 2645 PUTBACK;
1891 switch (PL_op->op_private & OPpENTERSUB_SSL) 2646 call_sv ((SV *)req, G_VOID | G_DISCARD);
1892 {
1893 case 0:
1894 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1895 break;
1896
1897 case 1:
1898 if (items != 2)
1899 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1900
1901 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1902 break;
1903
1904 case 2:
1905 prepare_schedule (aTHX_ &ta);
1906 break;
1907
1908 case 3:
1909 prepare_cede (aTHX_ &ta);
1910 break;
1911
1912 case 4:
1913 if (!prepare_cede_notself (aTHX_ &ta))
1914 goto skip;
1915
1916 break;
1917 } 2647 }
1918 2648
1919 TRANSFER (ta, 0); 2649 /* now that the requets is going, we loop toll we have a result */
1920 SPAGAIN; 2650 frame->data = (void *)state;
1921 2651 frame->prepare = prepare_schedule;
1922skip: 2652 frame->check = slf_check_aio_req;
1923 PUTBACK;
1924 SSL_TAIL;
1925 SPAGAIN;
1926 RETURN;
1927} 2653}
2654
2655static void
2656coro_aio_req_xs (pTHX_ CV *cv)
2657{
2658 dXSARGS;
2659
2660 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2661
2662 XSRETURN_EMPTY;
2663}
2664
2665/*****************************************************************************/
1928 2666
1929MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2667MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1930 2668
1931PROTOTYPES: DISABLE 2669PROTOTYPES: DISABLE
1932 2670
1933# these not obviously related functions are all rolled into the same xs
1934# function to increase chances that they all will call transfer with the same
1935# stack offset
1936void
1937_set_stacklevel (...)
1938 ALIAS:
1939 Coro::State::transfer = 1
1940 Coro::schedule = 2
1941 Coro::cede = 3
1942 Coro::cede_notself = 4
1943 CODE:
1944{
1945 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1946
1947 assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));
1948 ssl_cv = cv;
1949
1950 /* we patch the op, and then re-run the whole call */
1951 /* we have to put some dummy argument on the stack for this to work */
1952 ssl_restore.op_next = (OP *)&ssl_restore;
1953 ssl_restore.op_type = OP_NULL;
1954 ssl_restore.op_ppaddr = pp_restore;
1955 ssl_restore.op_first = PL_op;
1956
1957 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1958 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1959
1960 PL_op->op_ppaddr = pp_set_stacklevel;
1961 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1962
1963 PL_op = (OP *)&ssl_restore;
1964}
1965
1966BOOT: 2671BOOT:
1967{ 2672{
1968#ifdef USE_ITHREADS 2673#ifdef USE_ITHREADS
1969 MUTEX_INIT (&coro_lock);
1970# if CORO_PTHREAD 2674# if CORO_PTHREAD
1971 coro_thx = PERL_GET_CONTEXT; 2675 coro_thx = PERL_GET_CONTEXT;
1972# endif 2676# endif
1973#endif 2677#endif
1974 BOOT_PAGESIZE; 2678 BOOT_PAGESIZE;
… …
1995 main_top_env = PL_top_env; 2699 main_top_env = PL_top_env;
1996 2700
1997 while (main_top_env->je_prev) 2701 while (main_top_env->je_prev)
1998 main_top_env = main_top_env->je_prev; 2702 main_top_env = main_top_env->je_prev;
1999 2703
2704 {
2705 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2706
2707 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2708 hv_store_ent (PL_custom_op_names, slf,
2709 newSVpv ("coro_slf", 0), 0);
2710
2711 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2712 hv_store_ent (PL_custom_op_descs, slf,
2713 newSVpv ("coro schedule like function", 0), 0);
2714 }
2715
2000 coroapi.ver = CORO_API_VERSION; 2716 coroapi.ver = CORO_API_VERSION;
2001 coroapi.rev = CORO_API_REVISION; 2717 coroapi.rev = CORO_API_REVISION;
2718
2002 coroapi.transfer = api_transfer; 2719 coroapi.transfer = api_transfer;
2720
2721 coroapi.sv_state = SvSTATE_;
2722 coroapi.execute_slf = api_execute_slf;
2723 coroapi.prepare_nop = prepare_nop;
2724 coroapi.prepare_schedule = prepare_schedule;
2725 coroapi.prepare_cede = prepare_cede;
2726 coroapi.prepare_cede_notself = prepare_cede_notself;
2003 2727
2004 { 2728 {
2005 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2729 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2006 2730
2007 if (!svp) croak ("Time::HiRes is required"); 2731 if (!svp) croak ("Time::HiRes is required");
… …
2013 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2737 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2014} 2738}
2015 2739
2016SV * 2740SV *
2017new (char *klass, ...) 2741new (char *klass, ...)
2742 ALIAS:
2743 Coro::new = 1
2018 CODE: 2744 CODE:
2019{ 2745{
2020 struct coro *coro; 2746 struct coro *coro;
2021 MAGIC *mg; 2747 MAGIC *mg;
2022 HV *hv; 2748 HV *hv;
2749 CV *cb;
2023 int i; 2750 int i;
2751
2752 if (items > 1)
2753 {
2754 cb = coro_sv_2cv (aTHX_ ST (1));
2755
2756 if (!ix)
2757 {
2758 if (CvISXSUB (cb))
2759 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2760
2761 if (!CvROOT (cb))
2762 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2763 }
2764 }
2024 2765
2025 Newz (0, coro, 1, struct coro); 2766 Newz (0, coro, 1, struct coro);
2026 coro->args = newAV (); 2767 coro->args = newAV ();
2027 coro->flags = CF_NEW; 2768 coro->flags = CF_NEW;
2028 2769
… …
2033 coro->hv = hv = newHV (); 2774 coro->hv = hv = newHV ();
2034 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2775 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2035 mg->mg_flags |= MGf_DUP; 2776 mg->mg_flags |= MGf_DUP;
2036 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2777 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2037 2778
2779 if (items > 1)
2780 {
2038 av_extend (coro->args, items - 1); 2781 av_extend (coro->args, items - 1 + ix - 1);
2782
2783 if (ix)
2784 {
2785 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2786 cb = cv_coro_run;
2787 }
2788
2789 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2790
2039 for (i = 1; i < items; i++) 2791 for (i = 2; i < items; i++)
2040 av_push (coro->args, newSVsv (ST (i))); 2792 av_push (coro->args, newSVsv (ST (i)));
2793 }
2041} 2794}
2042 OUTPUT: 2795 OUTPUT:
2043 RETVAL 2796 RETVAL
2797
2798void
2799transfer (...)
2800 PROTOTYPE: $$
2801 CODE:
2802 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2044 2803
2045bool 2804bool
2046_destroy (SV *coro_sv) 2805_destroy (SV *coro_sv)
2047 CODE: 2806 CODE:
2048 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2807 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2055 CODE: 2814 CODE:
2056 _exit (code); 2815 _exit (code);
2057 2816
2058int 2817int
2059cctx_stacksize (int new_stacksize = 0) 2818cctx_stacksize (int new_stacksize = 0)
2819 PROTOTYPE: ;$
2060 CODE: 2820 CODE:
2061 RETVAL = cctx_stacksize; 2821 RETVAL = cctx_stacksize;
2062 if (new_stacksize) 2822 if (new_stacksize)
2063 { 2823 {
2064 cctx_stacksize = new_stacksize; 2824 cctx_stacksize = new_stacksize;
… …
2067 OUTPUT: 2827 OUTPUT:
2068 RETVAL 2828 RETVAL
2069 2829
2070int 2830int
2071cctx_max_idle (int max_idle = 0) 2831cctx_max_idle (int max_idle = 0)
2832 PROTOTYPE: ;$
2072 CODE: 2833 CODE:
2073 RETVAL = cctx_max_idle; 2834 RETVAL = cctx_max_idle;
2074 if (max_idle > 1) 2835 if (max_idle > 1)
2075 cctx_max_idle = max_idle; 2836 cctx_max_idle = max_idle;
2076 OUTPUT: 2837 OUTPUT:
2077 RETVAL 2838 RETVAL
2078 2839
2079int 2840int
2080cctx_count () 2841cctx_count ()
2842 PROTOTYPE:
2081 CODE: 2843 CODE:
2082 RETVAL = cctx_count; 2844 RETVAL = cctx_count;
2083 OUTPUT: 2845 OUTPUT:
2084 RETVAL 2846 RETVAL
2085 2847
2086int 2848int
2087cctx_idle () 2849cctx_idle ()
2850 PROTOTYPE:
2088 CODE: 2851 CODE:
2089 RETVAL = cctx_idle; 2852 RETVAL = cctx_idle;
2090 OUTPUT: 2853 OUTPUT:
2091 RETVAL 2854 RETVAL
2092 2855
2093void 2856void
2094list () 2857list ()
2858 PROTOTYPE:
2095 PPCODE: 2859 PPCODE:
2096{ 2860{
2097 struct coro *coro; 2861 struct coro *coro;
2098 for (coro = coro_first; coro; coro = coro->next) 2862 for (coro = coro_first; coro; coro = coro->next)
2099 if (coro->hv) 2863 if (coro->hv)
… …
2161 2925
2162void 2926void
2163throw (Coro::State self, SV *throw = &PL_sv_undef) 2927throw (Coro::State self, SV *throw = &PL_sv_undef)
2164 PROTOTYPE: $;$ 2928 PROTOTYPE: $;$
2165 CODE: 2929 CODE:
2930{
2931 struct coro *current = SvSTATE_current;
2932 SV **throwp = self == current ? &CORO_THROW : &self->except;
2166 SvREFCNT_dec (self->throw); 2933 SvREFCNT_dec (*throwp);
2167 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2934 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2935}
2168 2936
2169void 2937void
2170api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2938api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2939 PROTOTYPE: $;$
2940 C_ARGS: aTHX_ coro, flags
2171 2941
2172SV * 2942SV *
2173has_cctx (Coro::State coro) 2943has_cctx (Coro::State coro)
2174 PROTOTYPE: $ 2944 PROTOTYPE: $
2175 CODE: 2945 CODE:
… …
2199 OUTPUT: 2969 OUTPUT:
2200 RETVAL 2970 RETVAL
2201 2971
2202void 2972void
2203force_cctx () 2973force_cctx ()
2974 PROTOTYPE:
2204 CODE: 2975 CODE:
2205 struct coro *coro = SvSTATE (coro_current);
2206 coro->cctx->idle_sp = 0; 2976 SvSTATE_current->cctx->idle_sp = 0;
2207 2977
2208void 2978void
2209swap_defsv (Coro::State self) 2979swap_defsv (Coro::State self)
2210 PROTOTYPE: $ 2980 PROTOTYPE: $
2211 ALIAS: 2981 ALIAS:
2212 swap_defav = 1 2982 swap_defav = 1
2213 CODE: 2983 CODE:
2214 if (!self->slot) 2984 if (!self->slot)
2215 croak ("cannot swap state with coroutine that has no saved state"); 2985 croak ("cannot swap state with coroutine that has no saved state,");
2216 else 2986 else
2217 { 2987 {
2218 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2988 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2219 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2989 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2220 2990
2221 SV *tmp = *src; *src = *dst; *dst = tmp; 2991 SV *tmp = *src; *src = *dst; *dst = tmp;
2222 } 2992 }
2223 2993
2994
2224MODULE = Coro::State PACKAGE = Coro 2995MODULE = Coro::State PACKAGE = Coro
2225 2996
2226BOOT: 2997BOOT:
2227{ 2998{
2228 int i; 2999 int i;
2229 3000
2230 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3001 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2231 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3002 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2232 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3003 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2233 3004 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3005 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2234 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3006 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2235 SvREADONLY_on (coro_current); 3007
3008 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3009 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3010 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3011 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2236 3012
2237 coro_stash = gv_stashpv ("Coro", TRUE); 3013 coro_stash = gv_stashpv ("Coro", TRUE);
2238 3014
2239 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3015 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2240 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3016 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2248 3024
2249 { 3025 {
2250 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3026 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2251 3027
2252 coroapi.schedule = api_schedule; 3028 coroapi.schedule = api_schedule;
3029 coroapi.schedule_to = api_schedule_to;
2253 coroapi.cede = api_cede; 3030 coroapi.cede = api_cede;
2254 coroapi.cede_notself = api_cede_notself; 3031 coroapi.cede_notself = api_cede_notself;
2255 coroapi.ready = api_ready; 3032 coroapi.ready = api_ready;
2256 coroapi.is_ready = api_is_ready; 3033 coroapi.is_ready = api_is_ready;
2257 coroapi.nready = &coro_nready; 3034 coroapi.nready = coro_nready;
2258 coroapi.current = coro_current; 3035 coroapi.current = coro_current;
2259 3036
2260 GCoroAPI = &coroapi; 3037 /*GCoroAPI = &coroapi;*/
2261 sv_setiv (sv, (IV)&coroapi); 3038 sv_setiv (sv, (IV)&coroapi);
2262 SvREADONLY_on (sv); 3039 SvREADONLY_on (sv);
2263 } 3040 }
2264} 3041}
3042
3043void
3044schedule (...)
3045 CODE:
3046 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3047
3048void
3049schedule_to (...)
3050 CODE:
3051 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3052
3053void
3054cede_to (...)
3055 CODE:
3056 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3057
3058void
3059cede (...)
3060 CODE:
3061 CORO_EXECUTE_SLF_XS (slf_init_cede);
3062
3063void
3064cede_notself (...)
3065 CODE:
3066 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2265 3067
2266void 3068void
2267_set_current (SV *current) 3069_set_current (SV *current)
2268 PROTOTYPE: $ 3070 PROTOTYPE: $
2269 CODE: 3071 CODE:
… …
2272 3074
2273void 3075void
2274_set_readyhook (SV *hook) 3076_set_readyhook (SV *hook)
2275 PROTOTYPE: $ 3077 PROTOTYPE: $
2276 CODE: 3078 CODE:
2277 LOCK;
2278 SvREFCNT_dec (coro_readyhook); 3079 SvREFCNT_dec (coro_readyhook);
2279 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3080 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2280 UNLOCK;
2281 3081
2282int 3082int
2283prio (Coro::State coro, int newprio = 0) 3083prio (Coro::State coro, int newprio = 0)
3084 PROTOTYPE: $;$
2284 ALIAS: 3085 ALIAS:
2285 nice = 1 3086 nice = 1
2286 CODE: 3087 CODE:
2287{ 3088{
2288 RETVAL = coro->prio; 3089 RETVAL = coro->prio;
… …
2303 3104
2304SV * 3105SV *
2305ready (SV *self) 3106ready (SV *self)
2306 PROTOTYPE: $ 3107 PROTOTYPE: $
2307 CODE: 3108 CODE:
2308 RETVAL = boolSV (api_ready (self)); 3109 RETVAL = boolSV (api_ready (aTHX_ self));
2309 OUTPUT: 3110 OUTPUT:
2310 RETVAL 3111 RETVAL
2311 3112
2312int 3113int
2313nready (...) 3114nready (...)
… …
2315 CODE: 3116 CODE:
2316 RETVAL = coro_nready; 3117 RETVAL = coro_nready;
2317 OUTPUT: 3118 OUTPUT:
2318 RETVAL 3119 RETVAL
2319 3120
2320# for async_pool speedup
2321void 3121void
2322_pool_1 (SV *cb) 3122_pool_handler (...)
2323 CODE: 3123 CODE:
2324{ 3124 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2325 struct coro *coro = SvSTATE (coro_current);
2326 HV *hv = (HV *)SvRV (coro_current);
2327 AV *defav = GvAV (PL_defgv);
2328 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2329 AV *invoke_av;
2330 int i, len;
2331 3125
2332 if (!invoke) 3126void
3127async_pool (SV *cv, ...)
3128 PROTOTYPE: &@
3129 PPCODE:
3130{
3131 HV *hv = (HV *)av_pop (av_async_pool);
3132 AV *av = newAV ();
3133 SV *cb = ST (0);
3134 int i;
3135
3136 av_extend (av, items - 2);
3137 for (i = 1; i < items; ++i)
3138 av_push (av, SvREFCNT_inc_NN (ST (i)));
3139
3140 if ((SV *)hv == &PL_sv_undef)
2333 { 3141 {
2334 SV *old = PL_diehook; 3142 PUSHMARK (SP);
2335 PL_diehook = 0; 3143 EXTEND (SP, 2);
2336 SvREFCNT_dec (old); 3144 PUSHs (sv_Coro);
2337 croak ("\3async_pool terminate\2\n"); 3145 PUSHs ((SV *)cv_pool_handler);
3146 PUTBACK;
3147 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3148 SPAGAIN;
3149
3150 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2338 } 3151 }
2339 3152
2340 SvREFCNT_dec (coro->saved_deffh);
2341 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2342
2343 hv_store (hv, "desc", sizeof ("desc") - 1,
2344 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2345
2346 invoke_av = (AV *)SvRV (invoke);
2347 len = av_len (invoke_av);
2348
2349 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2350
2351 if (len > 0)
2352 { 3153 {
2353 av_fill (defav, len - 1); 3154 struct coro *coro = SvSTATE_hv (hv);
2354 for (i = 0; i < len; ++i) 3155
2355 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3156 assert (!coro->invoke_cb);
3157 assert (!coro->invoke_av);
3158 coro->invoke_cb = SvREFCNT_inc (cb);
3159 coro->invoke_av = av;
2356 } 3160 }
2357 3161
3162 api_ready (aTHX_ (SV *)hv);
3163
3164 if (GIMME_V != G_VOID)
3165 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3166 else
2358 SvREFCNT_dec (invoke); 3167 SvREFCNT_dec (hv);
2359} 3168}
2360 3169
2361void 3170SV *
2362_pool_2 (SV *cb) 3171rouse_cb ()
3172 PROTOTYPE:
2363 CODE: 3173 CODE:
2364{ 3174 RETVAL = coro_new_rouse_cb (aTHX);
2365 struct coro *coro = SvSTATE (coro_current);
2366
2367 sv_setsv (cb, &PL_sv_undef);
2368
2369 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2370 coro->saved_deffh = 0;
2371
2372 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2373 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2374 {
2375 SV *old = PL_diehook;
2376 PL_diehook = 0;
2377 SvREFCNT_dec (old);
2378 croak ("\3async_pool terminate\2\n");
2379 }
2380
2381 av_clear (GvAV (PL_defgv));
2382 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2383 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2384
2385 coro->prio = 0;
2386
2387 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2388 api_trace (coro_current, 0);
2389
2390 av_push (av_async_pool, newSVsv (coro_current));
2391}
2392
2393#if 0
2394
2395void
2396_generator_call (...)
2397 PROTOTYPE: @
2398 PPCODE:
2399 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2400 xxxx
2401 abort ();
2402
2403SV *
2404gensub (SV *sub, ...)
2405 PROTOTYPE: &;@
2406 CODE:
2407{
2408 struct coro *coro;
2409 MAGIC *mg;
2410 CV *xcv;
2411 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2412 int i;
2413
2414 CvGV (ncv) = CvGV (cv);
2415 CvFILE (ncv) = CvFILE (cv);
2416
2417 Newz (0, coro, 1, struct coro);
2418 coro->args = newAV ();
2419 coro->flags = CF_NEW;
2420
2421 av_extend (coro->args, items - 1);
2422 for (i = 1; i < items; i++)
2423 av_push (coro->args, newSVsv (ST (i)));
2424
2425 CvISXSUB_on (ncv);
2426 CvXSUBANY (ncv).any_ptr = (void *)coro;
2427
2428 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2429
2430 CvXSUB (ncv) = CvXSUB (xcv);
2431 CvANON_on (ncv);
2432
2433 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2434 RETVAL = newRV_noinc ((SV *)ncv);
2435}
2436 OUTPUT: 3175 OUTPUT:
2437 RETVAL 3176 RETVAL
2438 3177
2439#endif
2440
2441
2442MODULE = Coro::State PACKAGE = Coro::AIO
2443
2444void 3178void
2445_get_state (SV *self) 3179rouse_wait (...)
3180 PROTOTYPE: ;$
2446 PPCODE: 3181 PPCODE:
2447{ 3182 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2448 AV *defav = GvAV (PL_defgv);
2449 AV *av = newAV ();
2450 int i;
2451 SV *data_sv = newSV (sizeof (struct io_state));
2452 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2453 SvCUR_set (data_sv, sizeof (struct io_state));
2454 SvPOK_only (data_sv);
2455 3183
2456 data->errorno = errno;
2457 data->laststype = PL_laststype;
2458 data->laststatval = PL_laststatval;
2459 data->statcache = PL_statcache;
2460 3184
2461 av_extend (av, AvFILLp (defav) + 1 + 1); 3185MODULE = Coro::State PACKAGE = PerlIO::cede
2462 3186
2463 for (i = 0; i <= AvFILLp (defav); ++i) 3187BOOT:
2464 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3188 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2465 3189
2466 av_push (av, data_sv);
2467 3190
2468 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3191MODULE = Coro::State PACKAGE = Coro::Semaphore
2469 3192
2470 api_ready (self); 3193SV *
2471} 3194new (SV *klass, SV *count = 0)
3195 CODE:
3196 RETVAL = sv_bless (
3197 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3198 GvSTASH (CvGV (cv))
3199 );
3200 OUTPUT:
3201 RETVAL
3202
3203# helper for Coro::Channel
3204SV *
3205_alloc (int count)
3206 CODE:
3207 RETVAL = coro_waitarray_new (aTHX_ count);
3208 OUTPUT:
3209 RETVAL
3210
3211SV *
3212count (SV *self)
3213 CODE:
3214 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3215 OUTPUT:
3216 RETVAL
2472 3217
2473void 3218void
2474_set_state (SV *state) 3219up (SV *self, int adjust = 1)
2475 PROTOTYPE: $ 3220 ALIAS:
3221 adjust = 1
3222 CODE:
3223 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3224
3225void
3226down (...)
3227 CODE:
3228 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3229
3230void
3231wait (...)
3232 CODE:
3233 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3234
3235void
3236try (SV *self)
3237 PPCODE:
3238{
3239 AV *av = (AV *)SvRV (self);
3240 SV *count_sv = AvARRAY (av)[0];
3241 IV count = SvIVX (count_sv);
3242
3243 if (count > 0)
3244 {
3245 --count;
3246 SvIVX (count_sv) = count;
3247 XSRETURN_YES;
3248 }
3249 else
3250 XSRETURN_NO;
3251}
3252
3253void
3254waiters (SV *self)
3255 PPCODE:
3256{
3257 AV *av = (AV *)SvRV (self);
3258 int wcount = AvFILLp (av) + 1 - 1;
3259
3260 if (GIMME_V == G_SCALAR)
3261 XPUSHs (sv_2mortal (newSViv (wcount)));
3262 else
3263 {
3264 int i;
3265 EXTEND (SP, wcount);
3266 for (i = 1; i <= wcount; ++i)
3267 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3268 }
3269}
3270
3271MODULE = Coro::State PACKAGE = Coro::Signal
3272
3273SV *
3274new (SV *klass)
2476 PPCODE: 3275 CODE:
3276 RETVAL = sv_bless (
3277 coro_waitarray_new (aTHX_ 0),
3278 GvSTASH (CvGV (cv))
3279 );
3280 OUTPUT:
3281 RETVAL
3282
3283void
3284wait (...)
3285 CODE:
3286 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3287
3288void
3289broadcast (SV *self)
3290 CODE:
2477{ 3291{
2478 AV *av = (AV *)SvRV (state); 3292 AV *av = (AV *)SvRV (self);
2479 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3293 coro_signal_wake (aTHX_ av, AvFILLp (av));
2480 int i; 3294}
2481 3295
2482 errno = data->errorno; 3296void
2483 PL_laststype = data->laststype; 3297send (SV *self)
2484 PL_laststatval = data->laststatval; 3298 CODE:
2485 PL_statcache = data->statcache; 3299{
3300 AV *av = (AV *)SvRV (self);
2486 3301
2487 EXTEND (SP, AvFILLp (av)); 3302 if (AvFILLp (av))
2488 for (i = 0; i < AvFILLp (av); ++i) 3303 coro_signal_wake (aTHX_ av, 1);
2489 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3304 else
3305 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2490} 3306}
3307
3308IV
3309awaited (SV *self)
3310 CODE:
3311 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3312 OUTPUT:
3313 RETVAL
2491 3314
2492 3315
2493MODULE = Coro::State PACKAGE = Coro::AnyEvent 3316MODULE = Coro::State PACKAGE = Coro::AnyEvent
2494 3317
2495BOOT: 3318BOOT:
2496 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3319 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2497 3320
2498SV * 3321void
2499_schedule (...) 3322_schedule (...)
2500 PROTOTYPE: @
2501 CODE: 3323 CODE:
2502{ 3324{
2503 static int incede; 3325 static int incede;
2504 3326
2505 api_cede_notself (); 3327 api_cede_notself (aTHX);
2506 3328
2507 ++incede; 3329 ++incede;
2508 while (coro_nready >= incede && api_cede ()) 3330 while (coro_nready >= incede && api_cede (aTHX))
2509 ; 3331 ;
2510 3332
2511 sv_setsv (sv_activity, &PL_sv_undef); 3333 sv_setsv (sv_activity, &PL_sv_undef);
2512 if (coro_nready >= incede) 3334 if (coro_nready >= incede)
2513 { 3335 {
2514 PUSHMARK (SP); 3336 PUSHMARK (SP);
2515 PUTBACK; 3337 PUTBACK;
2516 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3338 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2517 SPAGAIN;
2518 } 3339 }
2519 3340
2520 --incede; 3341 --incede;
2521} 3342}
2522 3343
2523 3344
2524MODULE = Coro::State PACKAGE = PerlIO::cede 3345MODULE = Coro::State PACKAGE = Coro::AIO
2525 3346
2526BOOT: 3347void
2527 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3348_register (char *target, char *proto, SV *req)
3349 CODE:
3350{
3351 CV *req_cv = coro_sv_2cv (aTHX_ req);
3352 /* newXSproto doesn't return the CV on 5.8 */
3353 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3354 sv_setpv ((SV *)slf_cv, proto);
3355 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3356}
2528 3357

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