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Comparing Coro/Coro/State.xs (file contents):
Revision 1.267 by root, Fri Nov 14 06:29:52 2008 UTC vs.
Revision 1.314 by root, Thu Nov 20 03:24:39 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_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 sometimes 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
1594INLINE void 1617INLINE void
1595prepare_schedule (pTHX_ struct transfer_args *ta) 1618prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1596{ 1619{
1597 SV *prev_sv, *next_sv; 1620 SV *prev_sv, *next_sv;
1598 1621
1599 for (;;) 1622 for (;;)
1600 { 1623 {
1601 LOCK;
1602 next_sv = coro_deq (aTHX); 1624 next_sv = coro_deq (aTHX);
1603 1625
1604 /* nothing to schedule: call the idle handler */ 1626 /* nothing to schedule: call the idle handler */
1605 if (expect_false (!next_sv)) 1627 if (expect_false (!next_sv))
1606 { 1628 {
1607 dSP; 1629 dSP;
1608 UNLOCK;
1609 1630
1610 ENTER; 1631 ENTER;
1611 SAVETMPS; 1632 SAVETMPS;
1612 1633
1613 PUSHMARK (SP); 1634 PUSHMARK (SP);
1614 PUTBACK; 1635 PUTBACK;
1615 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1636 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1616 SPAGAIN;
1617 1637
1618 FREETMPS; 1638 FREETMPS;
1619 LEAVE; 1639 LEAVE;
1620 continue; 1640 continue;
1621 } 1641 }
1622 1642
1623 ta->next = SvSTATE (next_sv); 1643 ta->next = SvSTATE_hv (next_sv);
1624 1644
1625 /* cannot transfer to destroyed coros, skip and look for next */ 1645 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED)) 1646 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 { 1647 {
1628 UNLOCK;
1629 SvREFCNT_dec (next_sv); 1648 SvREFCNT_dec (next_sv);
1630 /* coro_nready has already been taken care of by destroy */ 1649 /* coro_nready has already been taken care of by destroy */
1631 continue; 1650 continue;
1632 } 1651 }
1633 1652
1634 --coro_nready; 1653 --coro_nready;
1635 UNLOCK;
1636 break; 1654 break;
1637 } 1655 }
1638 1656
1639 /* free this only after the transfer */ 1657 /* free this only after the transfer */
1640 prev_sv = SvRV (coro_current); 1658 prev_sv = SvRV (coro_current);
1641 ta->prev = SvSTATE (prev_sv); 1659 ta->prev = SvSTATE_hv (prev_sv);
1642 TRANSFER_CHECK (*ta); 1660 TRANSFER_CHECK (*ta);
1643 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1661 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1644 ta->next->flags &= ~CF_READY; 1662 ta->next->flags &= ~CF_READY;
1645 SvRV_set (coro_current, next_sv); 1663 SvRV_set (coro_current, next_sv);
1646 1664
1647 LOCK;
1648 free_coro_mortal (aTHX); 1665 free_coro_mortal (aTHX);
1649 coro_mortal = prev_sv; 1666 coro_mortal = prev_sv;
1650 UNLOCK;
1651} 1667}
1652 1668
1653INLINE void 1669INLINE void
1654prepare_cede (pTHX_ struct transfer_args *ta) 1670prepare_cede (pTHX_ struct coro_transfer_args *ta)
1655{ 1671{
1656 api_ready (coro_current); 1672 api_ready (aTHX_ coro_current);
1657 prepare_schedule (aTHX_ ta); 1673 prepare_schedule (aTHX_ ta);
1658} 1674}
1659 1675
1660static void 1676INLINE void
1661prepare_cede_notself (pTHX_ struct transfer_args *ta) 1677prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1662{ 1678{
1663 SV *prev = SvRV (coro_current); 1679 SV *prev = SvRV (coro_current);
1664 1680
1665 if (coro_nready) 1681 if (coro_nready)
1666 { 1682 {
1667 prepare_schedule (aTHX_ ta); 1683 prepare_schedule (aTHX_ ta);
1668 api_ready (prev); 1684 api_ready (aTHX_ prev);
1669 } 1685 }
1670 else 1686 else
1671 ta->prev = ta->next = SvSTATE (prev); 1687 prepare_nop (aTHX_ ta);
1672} 1688}
1673 1689
1674static void 1690static void
1675api_schedule (void) 1691api_schedule (pTHX)
1676{ 1692{
1677 dTHX;
1678 struct transfer_args ta; 1693 struct coro_transfer_args ta;
1679 1694
1680 prepare_schedule (aTHX_ &ta); 1695 prepare_schedule (aTHX_ &ta);
1681 TRANSFER (ta, 1); 1696 TRANSFER (ta, 1);
1682} 1697}
1683 1698
1684static int 1699static int
1685api_cede (void) 1700api_cede (pTHX)
1686{ 1701{
1687 dTHX;
1688 struct transfer_args ta; 1702 struct coro_transfer_args ta;
1689 1703
1690 prepare_cede (aTHX_ &ta); 1704 prepare_cede (aTHX_ &ta);
1691 1705
1692 if (expect_true (ta.prev != ta.next)) 1706 if (expect_true (ta.prev != ta.next))
1693 { 1707 {
… …
1697 else 1711 else
1698 return 0; 1712 return 0;
1699} 1713}
1700 1714
1701static int 1715static int
1702api_cede_notself (void) 1716api_cede_notself (pTHX)
1703{ 1717{
1704 if (coro_nready) 1718 if (coro_nready)
1705 { 1719 {
1706 dTHX;
1707 struct transfer_args ta; 1720 struct coro_transfer_args ta;
1708 1721
1709 prepare_cede_notself (aTHX_ &ta); 1722 prepare_cede_notself (aTHX_ &ta);
1710 TRANSFER (ta, 1); 1723 TRANSFER (ta, 1);
1711 return 1; 1724 return 1;
1712 } 1725 }
1713 else 1726 else
1714 return 0; 1727 return 0;
1715} 1728}
1716 1729
1717static void 1730static void
1718api_trace (SV *coro_sv, int flags) 1731api_trace (pTHX_ SV *coro_sv, int flags)
1719{ 1732{
1720 dTHX;
1721 struct coro *coro = SvSTATE (coro_sv); 1733 struct coro *coro = SvSTATE (coro_sv);
1722 1734
1723 if (flags & CC_TRACE) 1735 if (flags & CC_TRACE)
1724 { 1736 {
1725 if (!coro->cctx) 1737 if (!coro->cctx)
1726 coro->cctx = cctx_new_run (); 1738 coro->cctx = cctx_new_run ();
1727 else if (!(coro->cctx->flags & CC_TRACE)) 1739 else if (!(coro->cctx->flags & CC_TRACE))
1728 croak ("cannot enable tracing on coroutine with custom stack"); 1740 croak ("cannot enable tracing on coroutine with custom stack,");
1729 1741
1730 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1742 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1731 } 1743 }
1732 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1744 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1733 { 1745 {
… …
1738 else 1750 else
1739 coro->slot->runops = RUNOPS_DEFAULT; 1751 coro->slot->runops = RUNOPS_DEFAULT;
1740 } 1752 }
1741} 1753}
1742 1754
1743#if 0 1755/*****************************************************************************/
1756/* async pool handler */
1757
1744static int 1758static int
1745coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1759slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1746{ 1760{
1747 AV *padlist; 1761 HV *hv = (HV *)SvRV (coro_current);
1748 AV *av = (AV *)mg->mg_obj; 1762 struct coro *coro = (struct coro *)frame->data;
1749 1763
1750 abort (); 1764 if (!coro->invoke_cb)
1765 return 1; /* loop till we have invoke */
1766 else
1767 {
1768 hv_store (hv, "desc", sizeof ("desc") - 1,
1769 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1770
1771 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1772
1773 {
1774 dSP;
1775 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1776 PUTBACK;
1777 }
1778
1779 SvREFCNT_dec (GvAV (PL_defgv));
1780 GvAV (PL_defgv) = coro->invoke_av;
1781 coro->invoke_av = 0;
1782
1783 return 0;
1784 }
1785}
1786
1787static void
1788slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1789{
1790 HV *hv = (HV *)SvRV (coro_current);
1791 struct coro *coro = SvSTATE_hv ((SV *)hv);
1792
1793 if (expect_true (coro->saved_deffh))
1794 {
1795 /* subsequent iteration */
1796 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1797 coro->saved_deffh = 0;
1798
1799 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1800 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1801 {
1802 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1803 coro->invoke_av = newAV ();
1804
1805 frame->prepare = prepare_nop;
1806 }
1807 else
1808 {
1809 av_clear (GvAV (PL_defgv));
1810 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1811
1812 coro->prio = 0;
1813
1814 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1815 api_trace (aTHX_ coro_current, 0);
1816
1817 frame->prepare = prepare_schedule;
1818 av_push (av_async_pool, SvREFCNT_inc (hv));
1819 }
1820 }
1821 else
1822 {
1823 /* first iteration, simply fall through */
1824 frame->prepare = prepare_nop;
1825 }
1826
1827 frame->check = slf_check_pool_handler;
1828 frame->data = (void *)coro;
1829}
1830
1831/*****************************************************************************/
1832/* rouse callback */
1833
1834#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1835
1836static void
1837coro_rouse_callback (pTHX_ CV *cv)
1838{
1839 dXSARGS;
1840 SV *data = (SV *)GENSUB_ARG;
1841
1842 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1843 {
1844 /* first call, set args */
1845 AV *av = newAV ();
1846 SV *coro = SvRV (data);
1847
1848 SvRV_set (data, (SV *)av);
1849 api_ready (aTHX_ coro);
1850 SvREFCNT_dec (coro);
1851
1852 /* better take a full copy of the arguments */
1853 while (items--)
1854 av_store (av, items, newSVsv (ST (items)));
1855 }
1856
1857 XSRETURN_EMPTY;
1858}
1859
1860static int
1861slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1862{
1863 SV *data = (SV *)frame->data;
1864
1865 if (CORO_THROW)
1866 return 0;
1867
1868 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1869 return 1;
1870
1871 /* now push all results on the stack */
1872 {
1873 dSP;
1874 AV *av = (AV *)SvRV (data);
1875 int i;
1876
1877 EXTEND (SP, AvFILLp (av) + 1);
1878 for (i = 0; i <= AvFILLp (av); ++i)
1879 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1880
1881 /* we have stolen the elements, so ste length to zero and free */
1882 AvFILLp (av) = -1;
1883 av_undef (av);
1884
1885 PUTBACK;
1886 }
1751 1887
1752 return 0; 1888 return 0;
1753} 1889}
1754 1890
1755static MGVTBL coro_gensub_vtbl = { 1891static void
1756 0, 0, 0, 0, 1892slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1757 coro_gensub_free 1893{
1758}; 1894 SV *cb;
1759#endif 1895
1896 if (items)
1897 cb = arg [0];
1898 else
1899 {
1900 struct coro *coro = SvSTATE_current;
1901
1902 if (!coro->rouse_cb)
1903 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1904
1905 cb = sv_2mortal (coro->rouse_cb);
1906 coro->rouse_cb = 0;
1907 }
1908
1909 if (!SvROK (cb)
1910 || SvTYPE (SvRV (cb)) != SVt_PVCV
1911 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1912 croak ("Coro::rouse_wait called with illegal callback argument,");
1913
1914 {
1915 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1916 SV *data = (SV *)GENSUB_ARG;
1917
1918 frame->data = (void *)data;
1919 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1920 frame->check = slf_check_rouse_wait;
1921 }
1922}
1923
1924static SV *
1925coro_new_rouse_cb (pTHX)
1926{
1927 HV *hv = (HV *)SvRV (coro_current);
1928 struct coro *coro = SvSTATE_hv (hv);
1929 SV *data = newRV_inc ((SV *)hv);
1930 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1931
1932 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1933 SvREFCNT_dec (data); /* magicext increases the refcount */
1934
1935 SvREFCNT_dec (coro->rouse_cb);
1936 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1937
1938 return cb;
1939}
1940
1941/*****************************************************************************/
1942/* schedule-like-function opcode (SLF) */
1943
1944static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1945static const CV *slf_cv;
1946static SV **slf_argv;
1947static int slf_argc, slf_arga; /* count, allocated */
1948static I32 slf_ax; /* top of stack, for restore */
1949
1950/* this restores the stack in the case we patched the entersub, to */
1951/* recreate the stack frame as perl will on following calls */
1952/* since entersub cleared the stack */
1953static OP *
1954pp_restore (pTHX)
1955{
1956 int i;
1957 SV **SP = PL_stack_base + slf_ax;
1958
1959 PUSHMARK (SP);
1960
1961 EXTEND (SP, slf_argc + 1);
1962
1963 for (i = 0; i < slf_argc; ++i)
1964 PUSHs (sv_2mortal (slf_argv [i]));
1965
1966 PUSHs ((SV *)CvGV (slf_cv));
1967
1968 RETURNOP (slf_restore.op_first);
1969}
1970
1971static void
1972slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1973{
1974 SV **arg = (SV **)slf_frame.data;
1975
1976 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1977}
1978
1979static void
1980slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1981{
1982 if (items != 2)
1983 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1984
1985 frame->prepare = slf_prepare_transfer;
1986 frame->check = slf_check_nop;
1987 frame->data = (void *)arg; /* let's hope it will stay valid */
1988}
1989
1990static void
1991slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1992{
1993 frame->prepare = prepare_schedule;
1994 frame->check = slf_check_nop;
1995}
1996
1997static void
1998slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1999{
2000 frame->prepare = prepare_cede;
2001 frame->check = slf_check_nop;
2002}
2003
2004static void
2005slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2006{
2007 frame->prepare = prepare_cede_notself;
2008 frame->check = slf_check_nop;
2009}
2010
2011/*
2012 * these not obviously related functions are all rolled into one
2013 * function to increase chances that they all will call transfer with the same
2014 * stack offset
2015 * SLF stands for "schedule-like-function".
2016 */
2017static OP *
2018pp_slf (pTHX)
2019{
2020 I32 checkmark; /* mark SP to see how many elements check has pushed */
2021
2022 /* set up the slf frame, unless it has already been set-up */
2023 /* the latter happens when a new coro has been started */
2024 /* or when a new cctx was attached to an existing coroutine */
2025 if (expect_true (!slf_frame.prepare))
2026 {
2027 /* first iteration */
2028 dSP;
2029 SV **arg = PL_stack_base + TOPMARK + 1;
2030 int items = SP - arg; /* args without function object */
2031 SV *gv = *sp;
2032
2033 /* do a quick consistency check on the "function" object, and if it isn't */
2034 /* for us, divert to the real entersub */
2035 if (SvTYPE (gv) != SVt_PVGV
2036 || !GvCV (gv)
2037 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2038 return PL_ppaddr[OP_ENTERSUB](aTHX);
2039
2040 if (!(PL_op->op_flags & OPf_STACKED))
2041 {
2042 /* ampersand-form of call, use @_ instead of stack */
2043 AV *av = GvAV (PL_defgv);
2044 arg = AvARRAY (av);
2045 items = AvFILLp (av) + 1;
2046 }
2047
2048 /* now call the init function, which needs to set up slf_frame */
2049 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2050 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2051
2052 /* pop args */
2053 SP = PL_stack_base + POPMARK;
2054
2055 PUTBACK;
2056 }
2057
2058 /* now that we have a slf_frame, interpret it! */
2059 /* we use a callback system not to make the code needlessly */
2060 /* complicated, but so we can run multiple perl coros from one cctx */
2061
2062 do
2063 {
2064 struct coro_transfer_args ta;
2065
2066 slf_frame.prepare (aTHX_ &ta);
2067 TRANSFER (ta, 0);
2068
2069 checkmark = PL_stack_sp - PL_stack_base;
2070 }
2071 while (slf_frame.check (aTHX_ &slf_frame));
2072
2073 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2074
2075 /* exception handling */
2076 if (expect_false (CORO_THROW))
2077 {
2078 SV *exception = sv_2mortal (CORO_THROW);
2079
2080 CORO_THROW = 0;
2081 sv_setsv (ERRSV, exception);
2082 croak (0);
2083 }
2084
2085 /* return value handling - mostly like entersub */
2086 /* make sure we put something on the stack in scalar context */
2087 if (GIMME_V == G_SCALAR)
2088 {
2089 dSP;
2090 SV **bot = PL_stack_base + checkmark;
2091
2092 if (sp == bot) /* too few, push undef */
2093 bot [1] = &PL_sv_undef;
2094 else if (sp != bot + 1) /* too many, take last one */
2095 bot [1] = *sp;
2096
2097 SP = bot + 1;
2098
2099 PUTBACK;
2100 }
2101
2102 return NORMAL;
2103}
2104
2105static void
2106api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2107{
2108 int i;
2109 SV **arg = PL_stack_base + ax;
2110 int items = PL_stack_sp - arg + 1;
2111
2112 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2113
2114 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2115 && PL_op->op_ppaddr != pp_slf)
2116 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2117
2118 CvFLAGS (cv) |= CVf_SLF;
2119 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2120 slf_cv = cv;
2121
2122 /* we patch the op, and then re-run the whole call */
2123 /* we have to put the same argument on the stack for this to work */
2124 /* and this will be done by pp_restore */
2125 slf_restore.op_next = (OP *)&slf_restore;
2126 slf_restore.op_type = OP_CUSTOM;
2127 slf_restore.op_ppaddr = pp_restore;
2128 slf_restore.op_first = PL_op;
2129
2130 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2131
2132 if (PL_op->op_flags & OPf_STACKED)
2133 {
2134 if (items > slf_arga)
2135 {
2136 slf_arga = items;
2137 free (slf_argv);
2138 slf_argv = malloc (slf_arga * sizeof (SV *));
2139 }
2140
2141 slf_argc = items;
2142
2143 for (i = 0; i < items; ++i)
2144 slf_argv [i] = SvREFCNT_inc (arg [i]);
2145 }
2146 else
2147 slf_argc = 0;
2148
2149 PL_op->op_ppaddr = pp_slf;
2150 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2151
2152 PL_op = (OP *)&slf_restore;
2153}
1760 2154
1761/*****************************************************************************/ 2155/*****************************************************************************/
1762/* PerlIO::cede */ 2156/* PerlIO::cede */
1763 2157
1764typedef struct 2158typedef struct
… …
1792 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2186 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1793 double now = nvtime (); 2187 double now = nvtime ();
1794 2188
1795 if (now >= self->next) 2189 if (now >= self->next)
1796 { 2190 {
1797 api_cede (); 2191 api_cede (aTHX);
1798 self->next = now + self->every; 2192 self->next = now + self->every;
1799 } 2193 }
1800 2194
1801 return PerlIOBuf_flush (aTHX_ f); 2195 return PerlIOBuf_flush (aTHX_ f);
1802} 2196}
… …
1832 PerlIOBuf_get_cnt, 2226 PerlIOBuf_get_cnt,
1833 PerlIOBuf_set_ptrcnt, 2227 PerlIOBuf_set_ptrcnt,
1834}; 2228};
1835 2229
1836/*****************************************************************************/ 2230/*****************************************************************************/
2231/* Coro::Semaphore & Coro::Signal */
1837 2232
1838static const CV *ssl_cv; /* for quick consistency check */
1839
1840static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1841static SV *ssl_arg0;
1842static SV *ssl_arg1;
1843
1844/* this restores the stack in the case we patched the entersub, to */
1845/* recreate the stack frame as perl will on following calls */
1846/* since entersub cleared the stack */
1847static OP * 2233static SV *
1848pp_restore (pTHX) 2234coro_waitarray_new (pTHX_ int count)
1849{ 2235{
2236 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2237 AV *av = newAV ();
2238 SV **ary;
2239
2240 /* unfortunately, building manually saves memory */
2241 Newx (ary, 2, SV *);
2242 AvALLOC (av) = ary;
2243 /*AvARRAY (av) = ary;*/
2244 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2245 AvMAX (av) = 1;
2246 AvFILLp (av) = 0;
2247 ary [0] = newSViv (count);
2248
2249 return newRV_noinc ((SV *)av);
2250}
2251
2252/* semaphore */
2253
2254static void
2255coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2256{
2257 SV *count_sv = AvARRAY (av)[0];
2258 IV count = SvIVX (count_sv);
2259
2260 count += adjust;
2261 SvIVX (count_sv) = count;
2262
2263 /* now wake up as many waiters as are expected to lock */
2264 while (count > 0 && AvFILLp (av) > 0)
2265 {
2266 SV *cb;
2267
2268 /* swap first two elements so we can shift a waiter */
2269 AvARRAY (av)[0] = AvARRAY (av)[1];
2270 AvARRAY (av)[1] = count_sv;
2271 cb = av_shift (av);
2272
2273 if (SvOBJECT (cb))
2274 {
2275 api_ready (aTHX_ cb);
2276 --count;
2277 }
2278 else if (SvTYPE (cb) == SVt_PVCV)
2279 {
2280 dSP;
2281 PUSHMARK (SP);
2282 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2283 PUTBACK;
2284 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2285 }
2286
2287 SvREFCNT_dec (cb);
2288 }
2289}
2290
2291static void
2292coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2293{
2294 /* call $sem->adjust (0) to possibly wake up some other waiters */
2295 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2296}
2297
2298static int
2299slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2300{
2301 AV *av = (AV *)frame->data;
2302 SV *count_sv = AvARRAY (av)[0];
2303
2304 /* if we are about to throw, don't actually acquire the lock, just throw */
2305 if (CORO_THROW)
2306 return 0;
2307 else if (SvIVX (count_sv) > 0)
2308 {
2309 SvSTATE_current->on_destroy = 0;
2310
2311 if (acquire)
2312 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2313 else
2314 coro_semaphore_adjust (aTHX_ av, 0);
2315
2316 return 0;
2317 }
2318 else
2319 {
2320 int i;
2321 /* if we were woken up but can't down, we look through the whole */
2322 /* waiters list and only add us if we aren't in there already */
2323 /* this avoids some degenerate memory usage cases */
2324
2325 for (i = 1; i <= AvFILLp (av); ++i)
2326 if (AvARRAY (av)[i] == SvRV (coro_current))
2327 return 1;
2328
2329 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2330 return 1;
2331 }
2332}
2333
2334static int
2335slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2336{
2337 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2338}
2339
2340static int
2341slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2342{
2343 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2344}
2345
2346static void
2347slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2348{
2349 AV *av = (AV *)SvRV (arg [0]);
2350
2351 if (SvIVX (AvARRAY (av)[0]) > 0)
2352 {
2353 frame->data = (void *)av;
2354 frame->prepare = prepare_nop;
2355 }
2356 else
2357 {
2358 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2359
2360 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2361 frame->prepare = prepare_schedule;
2362
2363 /* to avoid race conditions when a woken-up coro gets terminated */
2364 /* we arrange for a temporary on_destroy that calls adjust (0) */
2365 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2366 }
2367}
2368
2369static void
2370slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2371{
2372 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2373 frame->check = slf_check_semaphore_down;
2374}
2375
2376static void
2377slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2378{
2379 if (items >= 2)
2380 {
2381 /* callback form */
2382 AV *av = (AV *)SvRV (arg [0]);
2383 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2384
2385 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2386
2387 if (SvIVX (AvARRAY (av)[0]) > 0)
2388 coro_semaphore_adjust (aTHX_ av, 0);
2389
2390 frame->prepare = prepare_nop;
2391 frame->check = slf_check_nop;
2392 }
2393 else
2394 {
2395 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2396 frame->check = slf_check_semaphore_wait;
2397 }
2398}
2399
2400/* signal */
2401
2402static void
2403coro_signal_wake (pTHX_ AV *av, int count)
2404{
2405 SvIVX (AvARRAY (av)[0]) = 0;
2406
2407 /* now signal count waiters */
2408 while (count > 0 && AvFILLp (av) > 0)
2409 {
2410 SV *cb;
2411
2412 /* swap first two elements so we can shift a waiter */
2413 cb = AvARRAY (av)[0];
2414 AvARRAY (av)[0] = AvARRAY (av)[1];
2415 AvARRAY (av)[1] = cb;
2416
2417 cb = av_shift (av);
2418
2419 api_ready (aTHX_ cb);
2420 sv_setiv (cb, 0); /* signal waiter */
2421 SvREFCNT_dec (cb);
2422
2423 --count;
2424 }
2425}
2426
2427static int
2428slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2429{
2430 /* if we are about to throw, also stop waiting */
2431 return SvROK ((SV *)frame->data) && !CORO_THROW;
2432}
2433
2434static void
2435slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2436{
2437 AV *av = (AV *)SvRV (arg [0]);
2438
2439 if (SvIVX (AvARRAY (av)[0]))
2440 {
2441 SvIVX (AvARRAY (av)[0]) = 0;
2442 frame->prepare = prepare_nop;
2443 frame->check = slf_check_nop;
2444 }
2445 else
2446 {
2447 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2448
2449 av_push (av, waiter);
2450
2451 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2452 frame->prepare = prepare_schedule;
2453 frame->check = slf_check_signal_wait;
2454 }
2455}
2456
2457/*****************************************************************************/
2458/* Coro::AIO */
2459
2460#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2461
2462/* helper storage struct */
2463struct io_state
2464{
2465 int errorno;
2466 I32 laststype; /* U16 in 5.10.0 */
2467 int laststatval;
2468 Stat_t statcache;
2469};
2470
2471static void
2472coro_aio_callback (pTHX_ CV *cv)
2473{
2474 dXSARGS;
2475 AV *state = (AV *)GENSUB_ARG;
2476 SV *coro = av_pop (state);
2477 SV *data_sv = newSV (sizeof (struct io_state));
2478
2479 av_extend (state, items - 1);
2480
2481 sv_upgrade (data_sv, SVt_PV);
2482 SvCUR_set (data_sv, sizeof (struct io_state));
2483 SvPOK_only (data_sv);
2484
2485 {
2486 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2487
2488 data->errorno = errno;
2489 data->laststype = PL_laststype;
2490 data->laststatval = PL_laststatval;
2491 data->statcache = PL_statcache;
2492 }
2493
2494 /* now build the result vector out of all the parameters and the data_sv */
2495 {
2496 int i;
2497
2498 for (i = 0; i < items; ++i)
2499 av_push (state, SvREFCNT_inc_NN (ST (i)));
2500 }
2501
2502 av_push (state, data_sv);
2503
2504 api_ready (aTHX_ coro);
2505 SvREFCNT_dec (coro);
2506 SvREFCNT_dec ((AV *)state);
2507}
2508
2509static int
2510slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2511{
2512 AV *state = (AV *)frame->data;
2513
2514 /* if we are about to throw, return early */
2515 /* this does not cancel the aio request, but at least */
2516 /* it quickly returns */
2517 if (CORO_THROW)
2518 return 0;
2519
2520 /* one element that is an RV? repeat! */
2521 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2522 return 1;
2523
2524 /* restore status */
2525 {
2526 SV *data_sv = av_pop (state);
2527 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2528
2529 errno = data->errorno;
2530 PL_laststype = data->laststype;
2531 PL_laststatval = data->laststatval;
2532 PL_statcache = data->statcache;
2533
2534 SvREFCNT_dec (data_sv);
2535 }
2536
2537 /* push result values */
2538 {
1850 dSP; 2539 dSP;
2540 int i;
1851 2541
2542 EXTEND (SP, AvFILLp (state) + 1);
2543 for (i = 0; i <= AvFILLp (state); ++i)
2544 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2545
2546 PUTBACK;
2547 }
2548
2549 return 0;
2550}
2551
2552static void
2553slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2554{
2555 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2556 SV *coro_hv = SvRV (coro_current);
2557 struct coro *coro = SvSTATE_hv (coro_hv);
2558
2559 /* put our coroutine id on the state arg */
2560 av_push (state, SvREFCNT_inc_NN (coro_hv));
2561
2562 /* first see whether we have a non-zero priority and set it as AIO prio */
2563 if (coro->prio)
2564 {
2565 dSP;
2566
2567 static SV *prio_cv;
2568 static SV *prio_sv;
2569
2570 if (expect_false (!prio_cv))
2571 {
2572 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2573 prio_sv = newSViv (0);
2574 }
2575
2576 PUSHMARK (SP);
2577 sv_setiv (prio_sv, coro->prio);
2578 XPUSHs (prio_sv);
2579
2580 PUTBACK;
2581 call_sv (prio_cv, G_VOID | G_DISCARD);
2582 }
2583
2584 /* now call the original request */
2585 {
2586 dSP;
2587 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2588 int i;
2589
1852 PUSHMARK (SP); 2590 PUSHMARK (SP);
1853 2591
1854 EXTEND (SP, 3); 2592 /* first push all args to the stack */
1855 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2593 EXTEND (SP, items + 1);
1856 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1857 PUSHs ((SV *)CvGV (ssl_cv));
1858 2594
1859 RETURNOP (ssl_restore.op_first); 2595 for (i = 0; i < items; ++i)
1860} 2596 PUSHs (arg [i]);
1861 2597
1862#define OPpENTERSUB_SSL 15 /* the part of op_private entersub hopefully doesn't use */ 2598 /* now push the callback closure */
2599 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1863 2600
1864/* declare prototype */ 2601 /* now call the AIO function - we assume our request is uncancelable */
1865XS(XS_Coro__State__set_stacklevel);
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 */
1872static OP *
1873pp_set_stacklevel (pTHX)
1874{
1875 dSP;
1876 struct transfer_args ta;
1877 SV **arg = PL_stack_base + TOPMARK + 1;
1878 int items = SP - arg; /* args without function object */
1879
1880 /* do a quick consistency check on the "function" object, and if it isn't */
1881 /* for us, divert to the real entersub */
1882 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1883 return PL_ppaddr[OP_ENTERSUB](aTHX);
1884
1885 /* pop args */
1886 SP = PL_stack_base + POPMARK;
1887
1888 if (!(PL_op->op_flags & OPf_STACKED))
1889 {
1890 /* ampersand-form of call, use @_ instead of stack */
1891 AV *av = GvAV (PL_defgv);
1892 arg = AvARRAY (av);
1893 items = AvFILLp (av) + 1;
1894 }
1895
1896 PUTBACK; 2602 PUTBACK;
1897 switch (PL_op->op_private & OPpENTERSUB_SSL) 2603 call_sv ((SV *)req, G_VOID | G_DISCARD);
1898 {
1899 case 0:
1900 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1901 break;
1902
1903 case 1:
1904 if (items != 2)
1905 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1906
1907 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1908 break;
1909
1910 case 2:
1911 prepare_schedule (aTHX_ &ta);
1912 break;
1913
1914 case 3:
1915 prepare_cede (aTHX_ &ta);
1916 break;
1917
1918 case 4:
1919 prepare_cede_notself (aTHX_ &ta);
1920 break;
1921 } 2604 }
1922 2605
1923 TRANSFER (ta, 0); 2606 /* now that the requets is going, we loop toll we have a result */
1924 SPAGAIN; 2607 frame->data = (void *)state;
1925 2608 frame->prepare = prepare_schedule;
1926skip: 2609 frame->check = slf_check_aio_req;
1927 PUTBACK;
1928 SSL_TAIL;
1929 SPAGAIN;
1930 RETURN;
1931} 2610}
1932 2611
1933static void 2612static void
1934coro_ssl_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2613coro_aio_req_xs (pTHX_ CV *cv)
1935{ 2614{
1936 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel)); 2615 dXSARGS;
1937 2616
1938 assert (("FATAL: ssl call with illegal CV value", CvGV (cv))); 2617 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1939 ssl_cv = cv;
1940 2618
1941 /* we patch the op, and then re-run the whole call */ 2619 XSRETURN_EMPTY;
1942 /* we have to put some dummy argument on the stack for this to work */
1943 ssl_restore.op_next = (OP *)&ssl_restore;
1944 ssl_restore.op_type = OP_NULL;
1945 ssl_restore.op_ppaddr = pp_restore;
1946 ssl_restore.op_first = PL_op;
1947
1948 ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1949 ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1950
1951 PL_op->op_ppaddr = pp_set_stacklevel;
1952 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1953
1954 PL_op = (OP *)&ssl_restore;
1955} 2620}
2621
2622/*****************************************************************************/
1956 2623
1957MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2624MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1958 2625
1959PROTOTYPES: DISABLE 2626PROTOTYPES: DISABLE
1960 2627
1961BOOT: 2628BOOT:
1962{ 2629{
1963#ifdef USE_ITHREADS 2630#ifdef USE_ITHREADS
1964 MUTEX_INIT (&coro_lock);
1965# if CORO_PTHREAD 2631# if CORO_PTHREAD
1966 coro_thx = PERL_GET_CONTEXT; 2632 coro_thx = PERL_GET_CONTEXT;
1967# endif 2633# endif
1968#endif 2634#endif
1969 BOOT_PAGESIZE; 2635 BOOT_PAGESIZE;
… …
1990 main_top_env = PL_top_env; 2656 main_top_env = PL_top_env;
1991 2657
1992 while (main_top_env->je_prev) 2658 while (main_top_env->je_prev)
1993 main_top_env = main_top_env->je_prev; 2659 main_top_env = main_top_env->je_prev;
1994 2660
2661 {
2662 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2663
2664 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2665 hv_store_ent (PL_custom_op_names, slf,
2666 newSVpv ("coro_slf", 0), 0);
2667
2668 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2669 hv_store_ent (PL_custom_op_descs, slf,
2670 newSVpv ("coro schedule like function", 0), 0);
2671 }
2672
1995 coroapi.ver = CORO_API_VERSION; 2673 coroapi.ver = CORO_API_VERSION;
1996 coroapi.rev = CORO_API_REVISION; 2674 coroapi.rev = CORO_API_REVISION;
2675
1997 coroapi.transfer = api_transfer; 2676 coroapi.transfer = api_transfer;
2677
2678 coroapi.sv_state = SvSTATE_;
2679 coroapi.execute_slf = api_execute_slf;
2680 coroapi.prepare_nop = prepare_nop;
2681 coroapi.prepare_schedule = prepare_schedule;
2682 coroapi.prepare_cede = prepare_cede;
2683 coroapi.prepare_cede_notself = prepare_cede_notself;
1998 2684
1999 { 2685 {
2000 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2686 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2001 2687
2002 if (!svp) croak ("Time::HiRes is required"); 2688 if (!svp) croak ("Time::HiRes is required");
… …
2008 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2694 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2009} 2695}
2010 2696
2011SV * 2697SV *
2012new (char *klass, ...) 2698new (char *klass, ...)
2699 ALIAS:
2700 Coro::new = 1
2013 CODE: 2701 CODE:
2014{ 2702{
2015 struct coro *coro; 2703 struct coro *coro;
2016 MAGIC *mg; 2704 MAGIC *mg;
2017 HV *hv; 2705 HV *hv;
2706 CV *cb;
2018 int i; 2707 int i;
2708
2709 if (items > 1)
2710 {
2711 cb = coro_sv_2cv (aTHX_ ST (1));
2712
2713 if (!ix)
2714 {
2715 if (CvISXSUB (cb))
2716 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2717
2718 if (!CvROOT (cb))
2719 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2720 }
2721 }
2019 2722
2020 Newz (0, coro, 1, struct coro); 2723 Newz (0, coro, 1, struct coro);
2021 coro->args = newAV (); 2724 coro->args = newAV ();
2022 coro->flags = CF_NEW; 2725 coro->flags = CF_NEW;
2023 2726
… …
2028 coro->hv = hv = newHV (); 2731 coro->hv = hv = newHV ();
2029 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2732 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2030 mg->mg_flags |= MGf_DUP; 2733 mg->mg_flags |= MGf_DUP;
2031 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2734 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2032 2735
2736 if (items > 1)
2737 {
2033 av_extend (coro->args, items - 1); 2738 av_extend (coro->args, items - 1 + ix - 1);
2739
2740 if (ix)
2741 {
2742 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2743 cb = cv_coro_run;
2744 }
2745
2746 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2747
2034 for (i = 1; i < items; i++) 2748 for (i = 2; i < items; i++)
2035 av_push (coro->args, newSVsv (ST (i))); 2749 av_push (coro->args, newSVsv (ST (i)));
2750 }
2036} 2751}
2037 OUTPUT: 2752 OUTPUT:
2038 RETVAL 2753 RETVAL
2039 2754
2040void 2755void
2041_set_stacklevel (...) 2756transfer (...)
2042 ALIAS: 2757 PROTOTYPE: $$
2043 Coro::State::transfer = 1 2758 CODE:
2044 Coro::schedule = 2 2759 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2045 Coro::cede = 3
2046 Coro::cede_notself = 4
2047 CODE:
2048 coro_ssl_patch (aTHX_ cv, ix, &ST (0), items);
2049 2760
2050bool 2761bool
2051_destroy (SV *coro_sv) 2762_destroy (SV *coro_sv)
2052 CODE: 2763 CODE:
2053 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2764 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2060 CODE: 2771 CODE:
2061 _exit (code); 2772 _exit (code);
2062 2773
2063int 2774int
2064cctx_stacksize (int new_stacksize = 0) 2775cctx_stacksize (int new_stacksize = 0)
2776 PROTOTYPE: ;$
2065 CODE: 2777 CODE:
2066 RETVAL = cctx_stacksize; 2778 RETVAL = cctx_stacksize;
2067 if (new_stacksize) 2779 if (new_stacksize)
2068 { 2780 {
2069 cctx_stacksize = new_stacksize; 2781 cctx_stacksize = new_stacksize;
… …
2072 OUTPUT: 2784 OUTPUT:
2073 RETVAL 2785 RETVAL
2074 2786
2075int 2787int
2076cctx_max_idle (int max_idle = 0) 2788cctx_max_idle (int max_idle = 0)
2789 PROTOTYPE: ;$
2077 CODE: 2790 CODE:
2078 RETVAL = cctx_max_idle; 2791 RETVAL = cctx_max_idle;
2079 if (max_idle > 1) 2792 if (max_idle > 1)
2080 cctx_max_idle = max_idle; 2793 cctx_max_idle = max_idle;
2081 OUTPUT: 2794 OUTPUT:
2082 RETVAL 2795 RETVAL
2083 2796
2084int 2797int
2085cctx_count () 2798cctx_count ()
2799 PROTOTYPE:
2086 CODE: 2800 CODE:
2087 RETVAL = cctx_count; 2801 RETVAL = cctx_count;
2088 OUTPUT: 2802 OUTPUT:
2089 RETVAL 2803 RETVAL
2090 2804
2091int 2805int
2092cctx_idle () 2806cctx_idle ()
2807 PROTOTYPE:
2093 CODE: 2808 CODE:
2094 RETVAL = cctx_idle; 2809 RETVAL = cctx_idle;
2095 OUTPUT: 2810 OUTPUT:
2096 RETVAL 2811 RETVAL
2097 2812
2098void 2813void
2099list () 2814list ()
2815 PROTOTYPE:
2100 PPCODE: 2816 PPCODE:
2101{ 2817{
2102 struct coro *coro; 2818 struct coro *coro;
2103 for (coro = coro_first; coro; coro = coro->next) 2819 for (coro = coro_first; coro; coro = coro->next)
2104 if (coro->hv) 2820 if (coro->hv)
… …
2166 2882
2167void 2883void
2168throw (Coro::State self, SV *throw = &PL_sv_undef) 2884throw (Coro::State self, SV *throw = &PL_sv_undef)
2169 PROTOTYPE: $;$ 2885 PROTOTYPE: $;$
2170 CODE: 2886 CODE:
2887{
2888 struct coro *current = SvSTATE_current;
2889 SV **throwp = self == current ? &CORO_THROW : &self->except;
2171 SvREFCNT_dec (self->throw); 2890 SvREFCNT_dec (*throwp);
2172 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2891 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2892}
2173 2893
2174void 2894void
2175api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2895api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2896 PROTOTYPE: $;$
2897 C_ARGS: aTHX_ coro, flags
2176 2898
2177SV * 2899SV *
2178has_cctx (Coro::State coro) 2900has_cctx (Coro::State coro)
2179 PROTOTYPE: $ 2901 PROTOTYPE: $
2180 CODE: 2902 CODE:
… …
2204 OUTPUT: 2926 OUTPUT:
2205 RETVAL 2927 RETVAL
2206 2928
2207void 2929void
2208force_cctx () 2930force_cctx ()
2931 PROTOTYPE:
2209 CODE: 2932 CODE:
2210 struct coro *coro = SvSTATE (coro_current);
2211 coro->cctx->idle_sp = 0; 2933 SvSTATE_current->cctx->idle_sp = 0;
2212 2934
2213void 2935void
2214swap_defsv (Coro::State self) 2936swap_defsv (Coro::State self)
2215 PROTOTYPE: $ 2937 PROTOTYPE: $
2216 ALIAS: 2938 ALIAS:
2217 swap_defav = 1 2939 swap_defav = 1
2218 CODE: 2940 CODE:
2219 if (!self->slot) 2941 if (!self->slot)
2220 croak ("cannot swap state with coroutine that has no saved state"); 2942 croak ("cannot swap state with coroutine that has no saved state,");
2221 else 2943 else
2222 { 2944 {
2223 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2945 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2224 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2946 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2225 2947
2226 SV *tmp = *src; *src = *dst; *dst = tmp; 2948 SV *tmp = *src; *src = *dst; *dst = tmp;
2227 } 2949 }
2228 2950
2951
2229MODULE = Coro::State PACKAGE = Coro 2952MODULE = Coro::State PACKAGE = Coro
2230 2953
2231BOOT: 2954BOOT:
2232{ 2955{
2233 int i; 2956 int i;
2234 2957
2235 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2958 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2236 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2959 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2237 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2960 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2238 2961 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2962 cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);
2239 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2963 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2240 SvREADONLY_on (coro_current); 2964 SvREADONLY_on (coro_current);
2965
2966 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2967 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2968 cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler);
2969 cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new);
2241 2970
2242 coro_stash = gv_stashpv ("Coro", TRUE); 2971 coro_stash = gv_stashpv ("Coro", TRUE);
2243 2972
2244 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2973 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2245 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2974 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2257 coroapi.schedule = api_schedule; 2986 coroapi.schedule = api_schedule;
2258 coroapi.cede = api_cede; 2987 coroapi.cede = api_cede;
2259 coroapi.cede_notself = api_cede_notself; 2988 coroapi.cede_notself = api_cede_notself;
2260 coroapi.ready = api_ready; 2989 coroapi.ready = api_ready;
2261 coroapi.is_ready = api_is_ready; 2990 coroapi.is_ready = api_is_ready;
2262 coroapi.nready = &coro_nready; 2991 coroapi.nready = coro_nready;
2263 coroapi.current = coro_current; 2992 coroapi.current = coro_current;
2264 2993
2265 GCoroAPI = &coroapi; 2994 /*GCoroAPI = &coroapi;*/
2266 sv_setiv (sv, (IV)&coroapi); 2995 sv_setiv (sv, (IV)&coroapi);
2267 SvREADONLY_on (sv); 2996 SvREADONLY_on (sv);
2268 } 2997 }
2269} 2998}
2999
3000void
3001schedule (...)
3002 CODE:
3003 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3004
3005void
3006cede (...)
3007 CODE:
3008 CORO_EXECUTE_SLF_XS (slf_init_cede);
3009
3010void
3011cede_notself (...)
3012 CODE:
3013 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2270 3014
2271void 3015void
2272_set_current (SV *current) 3016_set_current (SV *current)
2273 PROTOTYPE: $ 3017 PROTOTYPE: $
2274 CODE: 3018 CODE:
… …
2277 3021
2278void 3022void
2279_set_readyhook (SV *hook) 3023_set_readyhook (SV *hook)
2280 PROTOTYPE: $ 3024 PROTOTYPE: $
2281 CODE: 3025 CODE:
2282 LOCK;
2283 SvREFCNT_dec (coro_readyhook); 3026 SvREFCNT_dec (coro_readyhook);
2284 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3027 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2285 UNLOCK;
2286 3028
2287int 3029int
2288prio (Coro::State coro, int newprio = 0) 3030prio (Coro::State coro, int newprio = 0)
3031 PROTOTYPE: $;$
2289 ALIAS: 3032 ALIAS:
2290 nice = 1 3033 nice = 1
2291 CODE: 3034 CODE:
2292{ 3035{
2293 RETVAL = coro->prio; 3036 RETVAL = coro->prio;
… …
2308 3051
2309SV * 3052SV *
2310ready (SV *self) 3053ready (SV *self)
2311 PROTOTYPE: $ 3054 PROTOTYPE: $
2312 CODE: 3055 CODE:
2313 RETVAL = boolSV (api_ready (self)); 3056 RETVAL = boolSV (api_ready (aTHX_ self));
2314 OUTPUT: 3057 OUTPUT:
2315 RETVAL 3058 RETVAL
2316 3059
2317int 3060int
2318nready (...) 3061nready (...)
… …
2320 CODE: 3063 CODE:
2321 RETVAL = coro_nready; 3064 RETVAL = coro_nready;
2322 OUTPUT: 3065 OUTPUT:
2323 RETVAL 3066 RETVAL
2324 3067
2325# for async_pool speedup
2326void 3068void
2327_pool_1 (SV *cb) 3069_pool_handler (...)
2328 CODE: 3070 CODE:
2329{ 3071 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2330 struct coro *coro = SvSTATE (coro_current);
2331 HV *hv = (HV *)SvRV (coro_current);
2332 AV *defav = GvAV (PL_defgv);
2333 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2334 AV *invoke_av;
2335 int i, len;
2336 3072
2337 if (!invoke) 3073void
3074async_pool (SV *cv, ...)
3075 PROTOTYPE: &@
3076 PPCODE:
3077{
3078 HV *hv = (HV *)av_pop (av_async_pool);
3079 AV *av = newAV ();
3080 SV *cb = ST (0);
3081 int i;
3082
3083 av_extend (av, items - 2);
3084 for (i = 1; i < items; ++i)
3085 av_push (av, SvREFCNT_inc_NN (ST (i)));
3086
3087 if ((SV *)hv == &PL_sv_undef)
2338 { 3088 {
2339 SV *old = PL_diehook; 3089 PUSHMARK (SP);
2340 PL_diehook = 0; 3090 EXTEND (SP, 2);
2341 SvREFCNT_dec (old); 3091 PUSHs (sv_Coro);
2342 croak ("\3async_pool terminate\2\n"); 3092 PUSHs ((SV *)cv_pool_handler);
3093 PUTBACK;
3094 call_sv ((SV *)cv_coro_new, G_SCALAR);
3095 SPAGAIN;
3096
3097 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2343 } 3098 }
2344 3099
2345 SvREFCNT_dec (coro->saved_deffh);
2346 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2347
2348 hv_store (hv, "desc", sizeof ("desc") - 1,
2349 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2350
2351 invoke_av = (AV *)SvRV (invoke);
2352 len = av_len (invoke_av);
2353
2354 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2355
2356 if (len > 0)
2357 { 3100 {
2358 av_fill (defav, len - 1); 3101 struct coro *coro = SvSTATE_hv (hv);
2359 for (i = 0; i < len; ++i) 3102
2360 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3103 assert (!coro->invoke_cb);
3104 assert (!coro->invoke_av);
3105 coro->invoke_cb = SvREFCNT_inc (cb);
3106 coro->invoke_av = av;
2361 } 3107 }
2362 3108
3109 api_ready (aTHX_ (SV *)hv);
3110
3111 if (GIMME_V != G_VOID)
3112 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3113 else
2363 SvREFCNT_dec (invoke); 3114 SvREFCNT_dec (hv);
2364} 3115}
2365 3116
2366void 3117SV *
2367_pool_2 (SV *cb) 3118rouse_cb ()
3119 PROTOTYPE:
2368 CODE: 3120 CODE:
2369{ 3121 RETVAL = coro_new_rouse_cb (aTHX);
2370 struct coro *coro = SvSTATE (coro_current);
2371
2372 sv_setsv (cb, &PL_sv_undef);
2373
2374 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2375 coro->saved_deffh = 0;
2376
2377 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2378 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2379 {
2380 SV *old = PL_diehook;
2381 PL_diehook = 0;
2382 SvREFCNT_dec (old);
2383 croak ("\3async_pool terminate\2\n");
2384 }
2385
2386 av_clear (GvAV (PL_defgv));
2387 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2388 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2389
2390 coro->prio = 0;
2391
2392 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2393 api_trace (coro_current, 0);
2394
2395 av_push (av_async_pool, newSVsv (coro_current));
2396}
2397
2398#if 0
2399
2400void
2401_generator_call (...)
2402 PROTOTYPE: @
2403 PPCODE:
2404 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2405 xxxx
2406 abort ();
2407
2408SV *
2409gensub (SV *sub, ...)
2410 PROTOTYPE: &;@
2411 CODE:
2412{
2413 struct coro *coro;
2414 MAGIC *mg;
2415 CV *xcv;
2416 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2417 int i;
2418
2419 CvGV (ncv) = CvGV (cv);
2420 CvFILE (ncv) = CvFILE (cv);
2421
2422 Newz (0, coro, 1, struct coro);
2423 coro->args = newAV ();
2424 coro->flags = CF_NEW;
2425
2426 av_extend (coro->args, items - 1);
2427 for (i = 1; i < items; i++)
2428 av_push (coro->args, newSVsv (ST (i)));
2429
2430 CvISXSUB_on (ncv);
2431 CvXSUBANY (ncv).any_ptr = (void *)coro;
2432
2433 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2434
2435 CvXSUB (ncv) = CvXSUB (xcv);
2436 CvANON_on (ncv);
2437
2438 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2439 RETVAL = newRV_noinc ((SV *)ncv);
2440}
2441 OUTPUT: 3122 OUTPUT:
2442 RETVAL 3123 RETVAL
2443 3124
2444#endif
2445
2446
2447MODULE = Coro::State PACKAGE = Coro::AIO
2448
2449void 3125void
2450_get_state (SV *self) 3126rouse_wait (...)
3127 PROTOTYPE: ;$
2451 PPCODE: 3128 PPCODE:
2452{ 3129 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2453 AV *defav = GvAV (PL_defgv);
2454 AV *av = newAV ();
2455 int i;
2456 SV *data_sv = newSV (sizeof (struct io_state));
2457 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2458 SvCUR_set (data_sv, sizeof (struct io_state));
2459 SvPOK_only (data_sv);
2460 3130
2461 data->errorno = errno;
2462 data->laststype = PL_laststype;
2463 data->laststatval = PL_laststatval;
2464 data->statcache = PL_statcache;
2465 3131
2466 av_extend (av, AvFILLp (defav) + 1 + 1); 3132MODULE = Coro::State PACKAGE = PerlIO::cede
2467 3133
2468 for (i = 0; i <= AvFILLp (defav); ++i) 3134BOOT:
2469 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3135 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2470 3136
2471 av_push (av, data_sv);
2472 3137
2473 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3138MODULE = Coro::State PACKAGE = Coro::Semaphore
2474 3139
2475 api_ready (self); 3140SV *
2476} 3141new (SV *klass, SV *count = 0)
3142 CODE:
3143 RETVAL = sv_bless (
3144 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3145 GvSTASH (CvGV (cv))
3146 );
3147 OUTPUT:
3148 RETVAL
3149
3150# helper for Coro::Channel
3151SV *
3152_alloc (int count)
3153 CODE:
3154 RETVAL = coro_waitarray_new (aTHX_ count);
3155 OUTPUT:
3156 RETVAL
3157
3158SV *
3159count (SV *self)
3160 CODE:
3161 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3162 OUTPUT:
3163 RETVAL
2477 3164
2478void 3165void
2479_set_state (SV *state) 3166up (SV *self, int adjust = 1)
2480 PROTOTYPE: $ 3167 ALIAS:
3168 adjust = 1
3169 CODE:
3170 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3171
3172void
3173down (...)
3174 CODE:
3175 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3176
3177void
3178wait (...)
3179 CODE:
3180 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3181
3182void
3183try (SV *self)
3184 PPCODE:
3185{
3186 AV *av = (AV *)SvRV (self);
3187 SV *count_sv = AvARRAY (av)[0];
3188 IV count = SvIVX (count_sv);
3189
3190 if (count > 0)
3191 {
3192 --count;
3193 SvIVX (count_sv) = count;
3194 XSRETURN_YES;
3195 }
3196 else
3197 XSRETURN_NO;
3198}
3199
3200void
3201waiters (SV *self)
3202 PPCODE:
3203{
3204 AV *av = (AV *)SvRV (self);
3205 int wcount = AvFILLp (av) + 1 - 1;
3206
3207 if (GIMME_V == G_SCALAR)
3208 XPUSHs (sv_2mortal (newSViv (wcount)));
3209 else
3210 {
3211 int i;
3212 EXTEND (SP, wcount);
3213 for (i = 1; i <= wcount; ++i)
3214 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3215 }
3216}
3217
3218MODULE = Coro::State PACKAGE = Coro::Signal
3219
3220SV *
3221new (SV *klass)
2481 PPCODE: 3222 CODE:
3223 RETVAL = sv_bless (
3224 coro_waitarray_new (aTHX_ 0),
3225 GvSTASH (CvGV (cv))
3226 );
3227 OUTPUT:
3228 RETVAL
3229
3230void
3231wait (...)
3232 CODE:
3233 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3234
3235void
3236broadcast (SV *self)
3237 CODE:
2482{ 3238{
2483 AV *av = (AV *)SvRV (state); 3239 AV *av = (AV *)SvRV (self);
2484 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3240 coro_signal_wake (aTHX_ av, AvFILLp (av));
2485 int i; 3241}
2486 3242
2487 errno = data->errorno; 3243void
2488 PL_laststype = data->laststype; 3244send (SV *self)
2489 PL_laststatval = data->laststatval; 3245 CODE:
2490 PL_statcache = data->statcache; 3246{
3247 AV *av = (AV *)SvRV (self);
2491 3248
2492 EXTEND (SP, AvFILLp (av)); 3249 if (AvFILLp (av))
2493 for (i = 0; i < AvFILLp (av); ++i) 3250 coro_signal_wake (aTHX_ av, 1);
2494 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3251 else
3252 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2495} 3253}
3254
3255IV
3256awaited (SV *self)
3257 CODE:
3258 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3259 OUTPUT:
3260 RETVAL
2496 3261
2497 3262
2498MODULE = Coro::State PACKAGE = Coro::AnyEvent 3263MODULE = Coro::State PACKAGE = Coro::AnyEvent
2499 3264
2500BOOT: 3265BOOT:
2501 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3266 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2502 3267
2503SV * 3268void
2504_schedule (...) 3269_schedule (...)
2505 PROTOTYPE: @
2506 CODE: 3270 CODE:
2507{ 3271{
2508 static int incede; 3272 static int incede;
2509 3273
2510 api_cede_notself (); 3274 api_cede_notself (aTHX);
2511 3275
2512 ++incede; 3276 ++incede;
2513 while (coro_nready >= incede && api_cede ()) 3277 while (coro_nready >= incede && api_cede (aTHX))
2514 ; 3278 ;
2515 3279
2516 sv_setsv (sv_activity, &PL_sv_undef); 3280 sv_setsv (sv_activity, &PL_sv_undef);
2517 if (coro_nready >= incede) 3281 if (coro_nready >= incede)
2518 { 3282 {
2519 PUSHMARK (SP); 3283 PUSHMARK (SP);
2520 PUTBACK; 3284 PUTBACK;
2521 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3285 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2522 SPAGAIN;
2523 } 3286 }
2524 3287
2525 --incede; 3288 --incede;
2526} 3289}
2527 3290
2528 3291
2529MODULE = Coro::State PACKAGE = PerlIO::cede 3292MODULE = Coro::State PACKAGE = Coro::AIO
2530 3293
2531BOOT: 3294void
2532 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3295_register (char *target, char *proto, SV *req)
3296 CODE:
3297{
3298 CV *req_cv = coro_sv_2cv (aTHX_ req);
3299 /* newXSproto doesn't return the CV on 5.8 */
3300 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3301 sv_setpv ((SV *)slf_cv, proto);
3302 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3303}
2533 3304

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