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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 1.312 by root, Thu Nov 20 03:10:30 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
100 103
101/* 5.8.7 */ 104/* 5.8.7 */
102#ifndef SvRV_set 105#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 107#endif
… …
116# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 120#endif
118 121
119/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 123 * portable way as possible. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
121#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
122#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
123 131
124#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
125 133
126#if __GNUC__ >= 3 134#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
… …
137#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
138 146
139#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
140 148
141#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
142 151
143#ifdef USE_ITHREADS 152#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 153# if CORO_PTHREAD
149static void *coro_thx; 154static void *coro_thx;
150# endif 155# endif
151
152#else
153
154# define LOCK (void)0
155# define UNLOCK (void)0
156
157#endif 156#endif
158 157
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
174static double (*nvtime)(); /* so why doesn't it take void? */ 158static double (*nvtime)(); /* so why doesn't it take void? */
159
160/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX);
175 163
176static U32 cctx_gen; 164static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 168static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 170static 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};
189 171
190static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 174static SV *rv_diehook;
193static SV *rv_warnhook; 175static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */ 176static HV *hv_sig; /* %SIG */
195 177
196/* async_pool helper stuff */ 178/* async_pool helper stuff */
197static SV *sv_pool_rss; 179static SV *sv_pool_rss;
198static SV *sv_pool_size; 180static SV *sv_pool_size;
181static SV *sv_async_pool_idle;
199static AV *av_async_pool; 182static AV *av_async_pool;
183static SV *sv_Coro;
184static CV *cv_pool_handler;
185static CV *cv_coro_new;
200 186
201/* Coro::AnyEvent */ 187/* Coro::AnyEvent */
202static SV *sv_activity; 188static SV *sv_activity;
203 189
204static struct coro_cctx *cctx_first; 190static struct coro_cctx *cctx_first;
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 198 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 199 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 200};
215 201
216/* this is a structure representing a c-level coroutine */ 202/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 203typedef struct coro_cctx
204{
218 struct coro_cctx *next; 205 struct coro_cctx *next;
219 206
220 /* the stack */ 207 /* the stack */
221 void *sptr; 208 void *sptr;
222 size_t ssize; 209 size_t ssize;
… …
240 CF_NEW = 0x0004, /* has never been switched to */ 227 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 228 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
242}; 229};
243 230
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 231/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 232typedef struct
233{
246 SV *defsv; 234 SV *defsv;
247 AV *defav; 235 AV *defav;
248 SV *errsv; 236 SV *errsv;
249 SV *irsgv; 237 SV *irsgv;
250#define VAR(name,type) type name; 238#define VAR(name,type) type name;
… …
254 242
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 243#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 244
257/* this is a structure representing a perl-level coroutine */ 245/* this is a structure representing a perl-level coroutine */
258struct coro { 246struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 247 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 248 coro_cctx *cctx;
261 249
262 /* process data */ 250 /* state data */
251 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 252 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 253 perl_slots *slot; /* basically the saved sp */
265 254
255 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 256 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 257 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 258 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 259 HV *hv; /* the perl hash associated with this coro, if any */
260 void (*on_destroy)(pTHX_ struct coro *coro);
270 261
271 /* statistics */ 262 /* statistics */
272 int usecount; /* number of transfers to this coro */ 263 int usecount; /* number of transfers to this coro */
273 264
274 /* coro process data */ 265 /* coro process data */
275 int prio; 266 int prio;
276 SV *throw; /* exception to be thrown */ 267 SV *except; /* exception to be thrown */
268 SV *rouse_cb;
277 269
278 /* async_pool */ 270 /* async_pool */
279 SV *saved_deffh; 271 SV *saved_deffh;
272 SV *invoke_cb;
273 AV *invoke_av;
280 274
281 /* linked list */ 275 /* linked list */
282 struct coro *next, *prev; 276 struct coro *next, *prev;
283}; 277};
284 278
285typedef struct coro *Coro__State; 279typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 280typedef struct coro *Coro__State_or_hashref;
281
282/* the following variables are effectively part of the perl context */
283/* and get copied between struct coro and these variables */
284/* the mainr easonw e don't support windows process emulation */
285static struct CoroSLF slf_frame; /* the current slf frame */
287 286
288/** Coro ********************************************************************/ 287/** Coro ********************************************************************/
289 288
290#define PRIO_MAX 3 289#define PRIO_MAX 3
291#define PRIO_HIGH 1 290#define PRIO_HIGH 1
… …
296 295
297/* for Coro.pm */ 296/* for Coro.pm */
298static SV *coro_current; 297static SV *coro_current;
299static SV *coro_readyhook; 298static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 299static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
301static int coro_nready; 300static CV *cv_coro_run, *cv_coro_terminate;
302static struct coro *coro_first; 301static struct coro *coro_first;
302#define coro_nready coroapi.nready
303 303
304/** lowlevel stuff **********************************************************/ 304/** lowlevel stuff **********************************************************/
305 305
306static SV * 306static SV *
307coro_get_sv (pTHX_ const char *name, int create) 307coro_get_sv (pTHX_ const char *name, int create)
… …
329#if PERL_VERSION_ATLEAST (5,10,0) 329#if PERL_VERSION_ATLEAST (5,10,0)
330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
331 get_hv (name, create); 331 get_hv (name, create);
332#endif 332#endif
333 return get_hv (name, create); 333 return get_hv (name, create);
334}
335
336/* may croak */
337INLINE CV *
338coro_sv_2cv (pTHX_ SV *sv)
339{
340 HV *st;
341 GV *gvp;
342 return sv_2cv (sv, &st, &gvp, 0);
334} 343}
335 344
336static AV * 345static AV *
337coro_clone_padlist (pTHX_ CV *cv) 346coro_clone_padlist (pTHX_ CV *cv)
338{ 347{
… …
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 401 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 402
394 return 0; 403 return 0;
395} 404}
396 405
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext 406#define CORO_MAGIC_type_cv 26
398#define CORO_MAGIC_type_state PERL_MAGIC_ext 407#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 408
400static MGVTBL coro_cv_vtbl = { 409static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 410 0, 0, 0, 0,
402 coro_cv_free 411 coro_cv_free
403}; 412};
404 413
414#define CORO_MAGIC_NN(sv, type) \
415 (expect_true (SvMAGIC (sv)->mg_type == type) \
416 ? SvMAGIC (sv) \
417 : mg_find (sv, type))
418
405#define CORO_MAGIC(sv, type) \ 419#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \ 420 (expect_true (SvMAGIC (sv)) \
407 ? SvMAGIC (sv)->mg_type == type \ 421 ? CORO_MAGIC_NN (sv, type) \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0 422 : 0)
411 423
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 424#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 425#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
414 426
415INLINE struct coro * 427INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro) 428SvSTATE_ (pTHX_ SV *coro)
417{ 429{
418 HV *stash; 430 HV *stash;
… …
435 mg = CORO_MAGIC_state (coro); 447 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr; 448 return (struct coro *)mg->mg_ptr;
437} 449}
438 450
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 451#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
452
453/* faster than SvSTATE, but expects a coroutine hv */
454#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
455#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
440 456
441/* the next two functions merely cache the padlists */ 457/* the next two functions merely cache the padlists */
442static void 458static void
443get_padlist (pTHX_ CV *cv) 459get_padlist (pTHX_ CV *cv)
444{ 460{
… …
450 else 466 else
451 { 467 {
452#if CORO_PREFER_PERL_FUNCTIONS 468#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 469 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 470 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 471 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 472 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 473 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 474 SvREFCNT_dec (cp);
459#else 475#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 476 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
511 CvPADLIST (cv) = (AV *)POPs; 527 CvPADLIST (cv) = (AV *)POPs;
512 } 528 }
513 529
514 PUTBACK; 530 PUTBACK;
515 } 531 }
532
533 slf_frame = c->slf_frame;
534 CORO_THROW = c->except;
516} 535}
517 536
518static void 537static void
519save_perl (pTHX_ Coro__State c) 538save_perl (pTHX_ Coro__State c)
520{ 539{
540 c->except = CORO_THROW;
541 c->slf_frame = slf_frame;
542
521 { 543 {
522 dSP; 544 dSP;
523 I32 cxix = cxstack_ix; 545 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 546 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 547 PERL_SI *top_si = PL_curstackinfo;
… …
592 #undef VAR 614 #undef VAR
593 } 615 }
594} 616}
595 617
596/* 618/*
597 * allocate various perl stacks. This is an exact copy 619 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 620 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 621 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 622 * not usually need a lot of stackspace.
601 */ 623 */
602#if CORO_PREFER_PERL_FUNCTIONS 624#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 625# define coro_init_stacks(thx) init_stacks ()
604#else 626#else
605static void 627static void
606coro_init_stacks (pTHX) 628coro_init_stacks (pTHX)
607{ 629{
608 PL_curstackinfo = new_stackinfo(32, 8); 630 PL_curstackinfo = new_stackinfo(32, 8);
… …
671#if !PERL_VERSION_ATLEAST (5,10,0) 693#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 694 Safefree (PL_retstack);
673#endif 695#endif
674} 696}
675 697
698#define CORO_RSS \
699 rss += sizeof (SYM (curstackinfo)); \
700 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
702 rss += SYM (tmps_max) * sizeof (SV *); \
703 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
704 rss += SYM (scopestack_max) * sizeof (I32); \
705 rss += SYM (savestack_max) * sizeof (ANY);
706
676static size_t 707static size_t
677coro_rss (pTHX_ struct coro *coro) 708coro_rss (pTHX_ struct coro *coro)
678{ 709{
679 size_t rss = sizeof (*coro); 710 size_t rss = sizeof (*coro);
680 711
681 if (coro->mainstack) 712 if (coro->mainstack)
682 { 713 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 714 if (coro->flags & CF_RUNNING)
687 { 715 {
688 slot = &tmp_slot; 716 #define SYM(sym) PL_ ## sym
689 717 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 718 #undef SYM
693 } 719 }
694 else 720 else
695 slot = coro->slot;
696
697 if (slot)
698 { 721 {
699 rss += sizeof (slot->curstackinfo); 722 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 723 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 724 #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 } 725 }
711 } 726 }
712 727
713 return rss; 728 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} 729}
742 730
743/** coroutine stack handling ************************************************/ 731/** coroutine stack handling ************************************************/
744 732
745static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 733static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
831 819
832 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 820 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
833} 821}
834 822
835static void 823static void
824prepare_nop (pTHX_ struct coro_transfer_args *ta)
825{
826 /* kind of mega-hacky, but works */
827 ta->next = ta->prev = (struct coro *)ta;
828}
829
830static int
831slf_check_nop (pTHX_ struct CoroSLF *frame)
832{
833 return 0;
834}
835
836static UNOP coro_setup_op;
837
838static void NOINLINE /* noinline to keep it out of the transfer fast path */
836coro_setup (pTHX_ struct coro *coro) 839coro_setup (pTHX_ struct coro *coro)
837{ 840{
838 /* 841 /*
839 * emulate part of the perl startup here. 842 * emulate part of the perl startup here.
840 */ 843 */
… …
867 { 870 {
868 dSP; 871 dSP;
869 UNOP myop; 872 UNOP myop;
870 873
871 Zero (&myop, 1, UNOP); 874 Zero (&myop, 1, UNOP);
872 myop.op_next = Nullop; 875 myop.op_next = Nullop;
876 myop.op_type = OP_ENTERSUB;
873 myop.op_flags = OPf_WANT_VOID; 877 myop.op_flags = OPf_WANT_VOID;
874 878
875 PUSHMARK (SP); 879 PUSHMARK (SP);
876 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 880 PUSHs ((SV *)coro->startcv);
877 PUTBACK; 881 PUTBACK;
878 PL_op = (OP *)&myop; 882 PL_op = (OP *)&myop;
879 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 883 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
880 SPAGAIN;
881 } 884 }
882 885
883 /* this newly created coroutine might be run on an existing cctx which most 886 /* this newly created coroutine might be run on an existing cctx which most
884 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 887 * 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 */ 888 */
887 SSL_HEAD; 889 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
890 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
891
892 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
893 coro_setup_op.op_next = PL_op;
894 coro_setup_op.op_type = OP_CUSTOM;
895 coro_setup_op.op_ppaddr = pp_slf;
896 /* no flags etc. required, as an init function won't be called */
897
898 PL_op = (OP *)&coro_setup_op;
899
900 /* copy throw, in case it was set before coro_setup */
901 CORO_THROW = coro->except;
888} 902}
889 903
890static void 904static void
891coro_destruct (pTHX_ struct coro *coro) 905coro_destruct (pTHX_ struct coro *coro)
892{ 906{
… …
916 930
917 SvREFCNT_dec (PL_diehook); 931 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook); 932 SvREFCNT_dec (PL_warnhook);
919 933
920 SvREFCNT_dec (coro->saved_deffh); 934 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro->throw); 935 SvREFCNT_dec (coro->rouse_cb);
936 SvREFCNT_dec (coro->invoke_cb);
937 SvREFCNT_dec (coro->invoke_av);
922 938
923 coro_destruct_stacks (aTHX); 939 coro_destruct_stacks (aTHX);
924} 940}
925 941
926INLINE void 942INLINE void
… …
936static int 952static int
937runops_trace (pTHX) 953runops_trace (pTHX)
938{ 954{
939 COP *oldcop = 0; 955 COP *oldcop = 0;
940 int oldcxix = -2; 956 int oldcxix = -2;
941 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 957 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx; 958 coro_cctx *cctx = coro->cctx;
943 959
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 960 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 961 {
946 PERL_ASYNC_CHECK (); 962 PERL_ASYNC_CHECK ();
… …
1013 SAVETMPS; 1029 SAVETMPS;
1014 EXTEND (SP, 3); 1030 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1031 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1032 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1033 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1034 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK; 1035 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1036 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1037 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN; 1038 SPAGAIN;
1023 FREETMPS; 1039 FREETMPS;
… …
1055 1071
1056 TAINT_NOT; 1072 TAINT_NOT;
1057 return 0; 1073 return 0;
1058} 1074}
1059 1075
1076static struct coro_cctx *cctx_ssl_cctx;
1077static struct CoroSLF cctx_ssl_frame;
1078
1060static void 1079static void
1061prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1080slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1062{ 1081{
1063 ta->prev = (struct coro *)cctx; 1082 ta->prev = (struct coro *)cctx_ssl_cctx;
1064 ta->next = 0; 1083 ta->next = 0;
1065} 1084}
1066 1085
1067/* inject a fake call to Coro::State::_cctx_init into the execution */ 1086static int
1068/* _cctx_init should be careful, as it could be called at almost any time */ 1087slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1069/* during execution of a perl program */ 1088{
1070/* also initialises PL_top_env */ 1089 *frame = cctx_ssl_frame;
1090
1091 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1092}
1093
1094/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1071static void NOINLINE 1095static void NOINLINE
1072cctx_prepare (pTHX_ coro_cctx *cctx) 1096cctx_prepare (pTHX_ coro_cctx *cctx)
1073{ 1097{
1074 dSP;
1075 UNOP myop;
1076
1077 PL_top_env = &PL_start_env; 1098 PL_top_env = &PL_start_env;
1078 1099
1079 if (cctx->flags & CC_TRACE) 1100 if (cctx->flags & CC_TRACE)
1080 PL_runops = runops_trace; 1101 PL_runops = runops_trace;
1081 1102
1082 Zero (&myop, 1, UNOP); 1103 /* we already must be executing an SLF op, there is no other valid way
1083 myop.op_next = PL_op; 1104 * that can lead to creation of a new cctx */
1084 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1105 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1106 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1085 1107
1086 PUSHMARK (SP); 1108 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1087 EXTEND (SP, 2); 1109 cctx_ssl_cctx = cctx;
1088 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1110 cctx_ssl_frame = slf_frame;
1089 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1111
1090 PUTBACK; 1112 slf_frame.prepare = slf_prepare_set_stacklevel;
1091 PL_op = (OP *)&myop; 1113 slf_frame.check = slf_check_set_stacklevel;
1092 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1093 SPAGAIN;
1094} 1114}
1095 1115
1096/* the tail of transfer: execute stuff we can only do after a transfer */ 1116/* the tail of transfer: execute stuff we can only do after a transfer */
1097INLINE void 1117INLINE void
1098transfer_tail (pTHX) 1118transfer_tail (pTHX)
1099{ 1119{
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); 1120 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} 1121}
1116 1122
1117/* 1123/*
1118 * this is a _very_ stripped down perl interpreter ;) 1124 * this is a _very_ stripped down perl interpreter ;)
1119 */ 1125 */
… …
1126# endif 1132# endif
1127#endif 1133#endif
1128 { 1134 {
1129 dTHX; 1135 dTHX;
1130 1136
1131 /* we are the alternative tail to pp_set_stacklevel */ 1137 /* normally we would need to skip the entersub here */
1132 /* so do the same things here */ 1138 /* 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; 1139 /* PL_nop = PL_nop->op_next */
1137 1140
1138 /* inject a fake subroutine call to cctx_init */ 1141 /* inject a fake subroutine call to cctx_init */
1139 cctx_prepare (aTHX_ (coro_cctx *)arg); 1142 cctx_prepare (aTHX_ (coro_cctx *)arg);
1140 1143
1141 /* cctx_run is the alternative tail of transfer() */ 1144 /* cctx_run is the alternative tail of transfer() */
1142 transfer_tail (aTHX); 1145 transfer_tail (aTHX);
1143 1146
1144 /* somebody or something will hit me for both perl_run and PL_restartop */ 1147 /* somebody or something will hit me for both perl_run and PL_restartop */
1145 PL_restartop = PL_op; 1148 PL_restartop = PL_op;
1146 perl_run (PL_curinterp); 1149 perl_run (PL_curinterp);
1150 /*
1151 * Unfortunately, there is no way to get at the return values of the
1152 * coro body here, as perl_run destroys these
1153 */
1147 1154
1148 /* 1155 /*
1149 * If perl-run returns we assume exit() was being called or the coro 1156 * If perl-run returns we assume exit() was being called or the coro
1150 * fell off the end, which seems to be the only valid (non-bug) 1157 * fell off the end, which seems to be the only valid (non-bug)
1151 * reason for perl_run to return. We try to exit by jumping to the 1158 * reason for perl_run to return. We try to exit by jumping to the
… …
1302/** coroutine switching *****************************************************/ 1309/** coroutine switching *****************************************************/
1303 1310
1304static void 1311static void
1305transfer_check (pTHX_ struct coro *prev, struct coro *next) 1312transfer_check (pTHX_ struct coro *prev, struct coro *next)
1306{ 1313{
1314 /* TODO: throwing up here is considered harmful */
1315
1307 if (expect_true (prev != next)) 1316 if (expect_true (prev != next))
1308 { 1317 {
1309 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1318 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"); 1319 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1311 1320
1312 if (expect_false (next->flags & CF_RUNNING)) 1321 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"); 1322 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1314 1323
1315 if (expect_false (next->flags & CF_DESTROYED)) 1324 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"); 1325 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1317 1326
1318#if !PERL_VERSION_ATLEAST (5,10,0) 1327#if !PERL_VERSION_ATLEAST (5,10,0)
1319 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1328 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"); 1329 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1321#endif 1330#endif
1322 } 1331 }
1323} 1332}
1324 1333
1325/* always use the TRANSFER macro */ 1334/* always use the TRANSFER macro */
1326static void NOINLINE 1335static void NOINLINE /* noinline so we have a fixed stackframe */
1327transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1336transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1328{ 1337{
1329 dSTACKLEVEL; 1338 dSTACKLEVEL;
1330 1339
1331 /* sometimes transfer is only called to set idle_sp */ 1340 /* sometimes transfer is only called to set idle_sp */
… …
1346 prev->flags |= CF_RUNNING; 1355 prev->flags |= CF_RUNNING;
1347 } 1356 }
1348 1357
1349 prev->flags &= ~CF_RUNNING; 1358 prev->flags &= ~CF_RUNNING;
1350 next->flags |= CF_RUNNING; 1359 next->flags |= CF_RUNNING;
1351
1352 LOCK;
1353 1360
1354 /* first get rid of the old state */ 1361 /* first get rid of the old state */
1355 save_perl (aTHX_ prev); 1362 save_perl (aTHX_ prev);
1356 1363
1357 if (expect_false (next->flags & CF_NEW)) 1364 if (expect_false (next->flags & CF_NEW))
… …
1371 prev__cctx->idle_sp == STACKLEVEL 1378 prev__cctx->idle_sp == STACKLEVEL
1372 && !(prev__cctx->flags & CC_TRACE) 1379 && !(prev__cctx->flags & CC_TRACE)
1373 && !force_cctx 1380 && !force_cctx
1374 )) 1381 ))
1375 { 1382 {
1376 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1383 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1377 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1384 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1378 1385
1379 prev->cctx = 0; 1386 prev->cctx = 0;
1380 1387
1381 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1388 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
… …
1389 1396
1390 ++next->usecount; 1397 ++next->usecount;
1391 1398
1392 if (expect_true (!next->cctx)) 1399 if (expect_true (!next->cctx))
1393 next->cctx = cctx_get (aTHX); 1400 next->cctx = cctx_get (aTHX);
1394
1395 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1396 transfer_next = next;
1397 1401
1398 if (expect_false (prev__cctx != next->cctx)) 1402 if (expect_false (prev__cctx != next->cctx))
1399 { 1403 {
1400 prev__cctx->top_env = PL_top_env; 1404 prev__cctx->top_env = PL_top_env;
1401 PL_top_env = next->cctx->top_env; 1405 PL_top_env = next->cctx->top_env;
… …
1415coro_state_destroy (pTHX_ struct coro *coro) 1419coro_state_destroy (pTHX_ struct coro *coro)
1416{ 1420{
1417 if (coro->flags & CF_DESTROYED) 1421 if (coro->flags & CF_DESTROYED)
1418 return 0; 1422 return 0;
1419 1423
1424 if (coro->on_destroy)
1425 coro->on_destroy (aTHX_ coro);
1426
1420 coro->flags |= CF_DESTROYED; 1427 coro->flags |= CF_DESTROYED;
1421 1428
1422 if (coro->flags & CF_READY) 1429 if (coro->flags & CF_READY)
1423 { 1430 {
1424 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1431 /* reduce nready, as destroying a ready coro effectively unreadies it */
1425 /* alternative: look through all ready queues and remove the coro */ 1432 /* alternative: look through all ready queues and remove the coro */
1426 LOCK;
1427 --coro_nready; 1433 --coro_nready;
1428 UNLOCK;
1429 } 1434 }
1430 else 1435 else
1431 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1436 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1432 1437
1433 if (coro->mainstack && coro->mainstack != main_mainstack) 1438 if (coro->mainstack && coro->mainstack != main_mainstack)
1434 { 1439 {
1435 struct coro temp; 1440 struct coro temp;
1436 1441
1437 if (coro->flags & CF_RUNNING) 1442 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1438 croak ("FATAL: tried to destroy currently running coroutine");
1439 1443
1440 save_perl (aTHX_ &temp); 1444 save_perl (aTHX_ &temp);
1441 load_perl (aTHX_ coro); 1445 load_perl (aTHX_ coro);
1442 1446
1443 coro_destruct (aTHX_ coro); 1447 coro_destruct (aTHX_ coro);
… …
1446 1450
1447 coro->slot = 0; 1451 coro->slot = 0;
1448 } 1452 }
1449 1453
1450 cctx_destroy (coro->cctx); 1454 cctx_destroy (coro->cctx);
1455 SvREFCNT_dec (coro->startcv);
1451 SvREFCNT_dec (coro->args); 1456 SvREFCNT_dec (coro->args);
1457 SvREFCNT_dec (CORO_THROW);
1452 1458
1453 if (coro->next) coro->next->prev = coro->prev; 1459 if (coro->next) coro->next->prev = coro->prev;
1454 if (coro->prev) coro->prev->next = coro->next; 1460 if (coro->prev) coro->prev->next = coro->next;
1455 if (coro == coro_first) coro_first = coro->next; 1461 if (coro == coro_first) coro_first = coro->next;
1456 1462
… …
1494# define MGf_DUP 0 1500# define MGf_DUP 0
1495#endif 1501#endif
1496}; 1502};
1497 1503
1498static void 1504static void
1499prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1505prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1500{ 1506{
1501 ta->prev = SvSTATE (prev_sv); 1507 ta->prev = SvSTATE (prev_sv);
1502 ta->next = SvSTATE (next_sv); 1508 ta->next = SvSTATE (next_sv);
1503 TRANSFER_CHECK (*ta); 1509 TRANSFER_CHECK (*ta);
1504} 1510}
1505 1511
1506static void 1512static void
1507api_transfer (SV *prev_sv, SV *next_sv) 1513api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1508{ 1514{
1509 dTHX;
1510 struct transfer_args ta; 1515 struct coro_transfer_args ta;
1511 1516
1512 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1517 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1513 TRANSFER (ta, 1); 1518 TRANSFER (ta, 1);
1514} 1519}
1515 1520
1521/*****************************************************************************/
1522/* gensub: simple closure generation utility */
1523
1524#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1525
1526/* create a closure from XS, returns a code reference */
1527/* the arg can be accessed via GENSUB_ARG from the callback */
1528/* the callback must use dXSARGS/XSRETURN */
1529static SV *
1530gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1531{
1532 CV *cv = (CV *)newSV (0);
1533
1534 sv_upgrade ((SV *)cv, SVt_PVCV);
1535
1536 CvANON_on (cv);
1537 CvISXSUB_on (cv);
1538 CvXSUB (cv) = xsub;
1539 GENSUB_ARG = arg;
1540
1541 return newRV_noinc ((SV *)cv);
1542}
1543
1516/** Coro ********************************************************************/ 1544/** Coro ********************************************************************/
1517 1545
1518static void 1546INLINE void
1519coro_enq (pTHX_ SV *coro_sv) 1547coro_enq (pTHX_ struct coro *coro)
1520{ 1548{
1521 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1549 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1522} 1550}
1523 1551
1524static SV * 1552INLINE SV *
1525coro_deq (pTHX) 1553coro_deq (pTHX)
1526{ 1554{
1527 int prio; 1555 int prio;
1528 1556
1529 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1557 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1532 1560
1533 return 0; 1561 return 0;
1534} 1562}
1535 1563
1536static int 1564static int
1537api_ready (SV *coro_sv) 1565api_ready (pTHX_ SV *coro_sv)
1538{ 1566{
1539 dTHX;
1540 struct coro *coro; 1567 struct coro *coro;
1541 SV *sv_hook; 1568 SV *sv_hook;
1542 void (*xs_hook)(void); 1569 void (*xs_hook)(void);
1543 1570
1544 if (SvROK (coro_sv)) 1571 if (SvROK (coro_sv))
… …
1549 if (coro->flags & CF_READY) 1576 if (coro->flags & CF_READY)
1550 return 0; 1577 return 0;
1551 1578
1552 coro->flags |= CF_READY; 1579 coro->flags |= CF_READY;
1553 1580
1554 LOCK;
1555
1556 sv_hook = coro_nready ? 0 : coro_readyhook; 1581 sv_hook = coro_nready ? 0 : coro_readyhook;
1557 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1582 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1558 1583
1559 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1584 coro_enq (aTHX_ coro);
1560 ++coro_nready; 1585 ++coro_nready;
1561 1586
1562 UNLOCK;
1563
1564 if (sv_hook) 1587 if (sv_hook)
1565 { 1588 {
1566 dSP; 1589 dSP;
1567 1590
1568 ENTER; 1591 ENTER;
1569 SAVETMPS; 1592 SAVETMPS;
1570 1593
1571 PUSHMARK (SP); 1594 PUSHMARK (SP);
1572 PUTBACK; 1595 PUTBACK;
1573 call_sv (sv_hook, G_DISCARD); 1596 call_sv (sv_hook, G_VOID | G_DISCARD);
1574 SPAGAIN;
1575 1597
1576 FREETMPS; 1598 FREETMPS;
1577 LEAVE; 1599 LEAVE;
1578 } 1600 }
1579 1601
… …
1582 1604
1583 return 1; 1605 return 1;
1584} 1606}
1585 1607
1586static int 1608static int
1587api_is_ready (SV *coro_sv) 1609api_is_ready (pTHX_ SV *coro_sv)
1588{ 1610{
1589 dTHX;
1590
1591 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1611 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1592} 1612}
1593 1613
1594INLINE void 1614INLINE void
1595prepare_schedule (pTHX_ struct transfer_args *ta) 1615prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1596{ 1616{
1597 SV *prev_sv, *next_sv; 1617 SV *prev_sv, *next_sv;
1598 1618
1599 for (;;) 1619 for (;;)
1600 { 1620 {
1601 LOCK;
1602 next_sv = coro_deq (aTHX); 1621 next_sv = coro_deq (aTHX);
1603 1622
1604 /* nothing to schedule: call the idle handler */ 1623 /* nothing to schedule: call the idle handler */
1605 if (expect_false (!next_sv)) 1624 if (expect_false (!next_sv))
1606 { 1625 {
1607 dSP; 1626 dSP;
1608 UNLOCK;
1609 1627
1610 ENTER; 1628 ENTER;
1611 SAVETMPS; 1629 SAVETMPS;
1612 1630
1613 PUSHMARK (SP); 1631 PUSHMARK (SP);
1614 PUTBACK; 1632 PUTBACK;
1615 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1633 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1616 SPAGAIN;
1617 1634
1618 FREETMPS; 1635 FREETMPS;
1619 LEAVE; 1636 LEAVE;
1620 continue; 1637 continue;
1621 } 1638 }
1622 1639
1623 ta->next = SvSTATE (next_sv); 1640 ta->next = SvSTATE_hv (next_sv);
1624 1641
1625 /* cannot transfer to destroyed coros, skip and look for next */ 1642 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED)) 1643 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 { 1644 {
1628 UNLOCK;
1629 SvREFCNT_dec (next_sv); 1645 SvREFCNT_dec (next_sv);
1630 /* coro_nready has already been taken care of by destroy */ 1646 /* coro_nready has already been taken care of by destroy */
1631 continue; 1647 continue;
1632 } 1648 }
1633 1649
1634 --coro_nready; 1650 --coro_nready;
1635 UNLOCK;
1636 break; 1651 break;
1637 } 1652 }
1638 1653
1639 /* free this only after the transfer */ 1654 /* free this only after the transfer */
1640 prev_sv = SvRV (coro_current); 1655 prev_sv = SvRV (coro_current);
1641 ta->prev = SvSTATE (prev_sv); 1656 ta->prev = SvSTATE_hv (prev_sv);
1642 TRANSFER_CHECK (*ta); 1657 TRANSFER_CHECK (*ta);
1643 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1658 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1644 ta->next->flags &= ~CF_READY; 1659 ta->next->flags &= ~CF_READY;
1645 SvRV_set (coro_current, next_sv); 1660 SvRV_set (coro_current, next_sv);
1646 1661
1647 LOCK;
1648 free_coro_mortal (aTHX); 1662 free_coro_mortal (aTHX);
1649 coro_mortal = prev_sv; 1663 coro_mortal = prev_sv;
1650 UNLOCK;
1651} 1664}
1652 1665
1653INLINE void 1666INLINE void
1654prepare_cede (pTHX_ struct transfer_args *ta) 1667prepare_cede (pTHX_ struct coro_transfer_args *ta)
1655{ 1668{
1656 api_ready (coro_current); 1669 api_ready (aTHX_ coro_current);
1657 prepare_schedule (aTHX_ ta); 1670 prepare_schedule (aTHX_ ta);
1658} 1671}
1659 1672
1673INLINE void
1674prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1675{
1676 SV *prev = SvRV (coro_current);
1677
1678 if (coro_nready)
1679 {
1680 prepare_schedule (aTHX_ ta);
1681 api_ready (aTHX_ prev);
1682 }
1683 else
1684 prepare_nop (aTHX_ ta);
1685}
1686
1687static void
1688api_schedule (pTHX)
1689{
1690 struct coro_transfer_args ta;
1691
1692 prepare_schedule (aTHX_ &ta);
1693 TRANSFER (ta, 1);
1694}
1695
1660static int 1696static int
1661prepare_cede_notself (pTHX_ struct transfer_args *ta) 1697api_cede (pTHX)
1662{ 1698{
1663 if (coro_nready) 1699 struct coro_transfer_args ta;
1664 { 1700
1665 SV *prev = SvRV (coro_current);
1666 prepare_schedule (aTHX_ ta); 1701 prepare_cede (aTHX_ &ta);
1667 api_ready (prev); 1702
1703 if (expect_true (ta.prev != ta.next))
1704 {
1705 TRANSFER (ta, 1);
1668 return 1; 1706 return 1;
1669 } 1707 }
1670 else 1708 else
1671 return 0; 1709 return 0;
1672} 1710}
1673 1711
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 1712static int
1685api_cede (void) 1713api_cede_notself (pTHX)
1686{ 1714{
1687 dTHX; 1715 if (coro_nready)
1716 {
1688 struct transfer_args ta; 1717 struct coro_transfer_args ta;
1689 1718
1690 prepare_cede (aTHX_ &ta); 1719 prepare_cede_notself (aTHX_ &ta);
1691
1692 if (expect_true (ta.prev != ta.next))
1693 {
1694 TRANSFER (ta, 1); 1720 TRANSFER (ta, 1);
1695 return 1; 1721 return 1;
1696 } 1722 }
1697 else 1723 else
1698 return 0; 1724 return 0;
1699} 1725}
1700 1726
1701static int 1727static 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) 1728api_trace (pTHX_ SV *coro_sv, int flags)
1718{ 1729{
1719 dTHX;
1720 struct coro *coro = SvSTATE (coro_sv); 1730 struct coro *coro = SvSTATE (coro_sv);
1721 1731
1722 if (flags & CC_TRACE) 1732 if (flags & CC_TRACE)
1723 { 1733 {
1724 if (!coro->cctx) 1734 if (!coro->cctx)
1725 coro->cctx = cctx_new_run (); 1735 coro->cctx = cctx_new_run ();
1726 else if (!(coro->cctx->flags & CC_TRACE)) 1736 else if (!(coro->cctx->flags & CC_TRACE))
1727 croak ("cannot enable tracing on coroutine with custom stack"); 1737 croak ("cannot enable tracing on coroutine with custom stack,");
1728 1738
1729 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1739 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1730 } 1740 }
1731 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1741 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1732 { 1742 {
… …
1737 else 1747 else
1738 coro->slot->runops = RUNOPS_DEFAULT; 1748 coro->slot->runops = RUNOPS_DEFAULT;
1739 } 1749 }
1740} 1750}
1741 1751
1742#if 0 1752/*****************************************************************************/
1753/* async pool handler */
1754
1743static int 1755static int
1744coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1756slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1745{ 1757{
1746 AV *padlist; 1758 HV *hv = (HV *)SvRV (coro_current);
1747 AV *av = (AV *)mg->mg_obj; 1759 struct coro *coro = (struct coro *)frame->data;
1748 1760
1749 abort (); 1761 if (!coro->invoke_cb)
1762 return 1; /* loop till we have invoke */
1763 else
1764 {
1765 int i, len;
1766
1767 hv_store (hv, "desc", sizeof ("desc") - 1,
1768 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1769
1770 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1771
1772 len = av_len (coro->invoke_av);
1773
1774 {
1775 dSP;
1776 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1777 PUTBACK;
1778 }
1779
1780 SvREFCNT_dec (GvAV (PL_defgv));
1781 GvAV (PL_defgv) = coro->invoke_av;
1782 coro->invoke_av = 0;
1783
1784 return 0;
1785 }
1786}
1787
1788static void
1789slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1790{
1791 HV *hv = (HV *)SvRV (coro_current);
1792 struct coro *coro = SvSTATE_hv ((SV *)hv);
1793
1794 if (expect_true (coro->saved_deffh))
1795 {
1796 /* subsequent iteration */
1797 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1798 coro->saved_deffh = 0;
1799
1800 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1801 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1802 {
1803 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1804 coro->invoke_av = newAV ();
1805
1806 frame->prepare = prepare_nop;
1807 }
1808 else
1809 {
1810 av_clear (GvAV (PL_defgv));
1811 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1812
1813 coro->prio = 0;
1814
1815 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1816 api_trace (aTHX_ coro_current, 0);
1817
1818 frame->prepare = prepare_schedule;
1819 av_push (av_async_pool, SvREFCNT_inc (hv));
1820 }
1821 }
1822 else
1823 {
1824 /* first iteration, simply fall through */
1825 frame->prepare = prepare_nop;
1826 }
1827
1828 frame->check = slf_check_pool_handler;
1829 frame->data = (void *)coro;
1830}
1831
1832/*****************************************************************************/
1833/* rouse callback */
1834
1835#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1836
1837static void
1838coro_rouse_callback (pTHX_ CV *cv)
1839{
1840 dXSARGS;
1841 SV *data = (SV *)GENSUB_ARG;
1842
1843 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1844 {
1845 /* first call, set args */
1846 int i;
1847 AV *av = newAV ();
1848 SV *coro = SvRV (data);
1849
1850 SvRV_set (data, (SV *)av);
1851 api_ready (aTHX_ coro);
1852 SvREFCNT_dec (coro);
1853
1854 /* better take a full copy of the arguments */
1855 while (items--)
1856 av_store (av, items, newSVsv (ST (items)));
1857 }
1858
1859 XSRETURN_EMPTY;
1860}
1861
1862static int
1863slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1864{
1865 SV *data = (SV *)frame->data;
1866
1867 if (CORO_THROW)
1868 return 0;
1869
1870 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1871 return 1;
1872
1873 /* now push all results on the stack */
1874 {
1875 dSP;
1876 AV *av = (AV *)SvRV (data);
1877 int i;
1878
1879 EXTEND (SP, AvFILLp (av) + 1);
1880 for (i = 0; i <= AvFILLp (av); ++i)
1881 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1882
1883 /* we have stolen the elements, so ste length to zero and free */
1884 AvFILLp (av) = -1;
1885 av_undef (av);
1886
1887 PUTBACK;
1888 }
1750 1889
1751 return 0; 1890 return 0;
1752} 1891}
1753 1892
1754static MGVTBL coro_gensub_vtbl = { 1893static void
1755 0, 0, 0, 0, 1894slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1756 coro_gensub_free 1895{
1757}; 1896 SV *cb;
1758#endif 1897
1898 if (items)
1899 cb = arg [0];
1900 else
1901 {
1902 struct coro *coro = SvSTATE_current;
1903
1904 if (!coro->rouse_cb)
1905 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1906
1907 cb = sv_2mortal (coro->rouse_cb);
1908 coro->rouse_cb = 0;
1909 }
1910
1911 if (!SvROK (cb)
1912 || SvTYPE (SvRV (cb)) != SVt_PVCV
1913 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1914 croak ("Coro::rouse_wait called with illegal callback argument,");
1915
1916 {
1917 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1918 SV *data = (SV *)GENSUB_ARG;
1919
1920 frame->data = (void *)data;
1921 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1922 frame->check = slf_check_rouse_wait;
1923 }
1924}
1925
1926static SV *
1927coro_new_rouse_cb (pTHX)
1928{
1929 HV *hv = (HV *)SvRV (coro_current);
1930 struct coro *coro = SvSTATE_hv (hv);
1931 SV *data = newRV_inc ((SV *)hv);
1932 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1933
1934 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1935 SvREFCNT_dec (data); /* magicext increases the refcount */
1936
1937 SvREFCNT_dec (coro->rouse_cb);
1938 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1939
1940 return cb;
1941}
1942
1943/*****************************************************************************/
1944/* schedule-like-function opcode (SLF) */
1945
1946static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1947static const CV *slf_cv;
1948static SV **slf_argv;
1949static int slf_argc, slf_arga; /* count, allocated */
1950static I32 slf_ax; /* top of stack, for restore */
1951
1952/* this restores the stack in the case we patched the entersub, to */
1953/* recreate the stack frame as perl will on following calls */
1954/* since entersub cleared the stack */
1955static OP *
1956pp_restore (pTHX)
1957{
1958 int i;
1959 SV **SP = PL_stack_base + slf_ax;
1960
1961 PUSHMARK (SP);
1962
1963 EXTEND (SP, slf_argc + 1);
1964
1965 for (i = 0; i < slf_argc; ++i)
1966 PUSHs (sv_2mortal (slf_argv [i]));
1967
1968 PUSHs ((SV *)CvGV (slf_cv));
1969
1970 RETURNOP (slf_restore.op_first);
1971}
1972
1973static void
1974slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1975{
1976 SV **arg = (SV **)slf_frame.data;
1977
1978 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1979}
1980
1981static void
1982slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1983{
1984 if (items != 2)
1985 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1986
1987 frame->prepare = slf_prepare_transfer;
1988 frame->check = slf_check_nop;
1989 frame->data = (void *)arg; /* let's hope it will stay valid */
1990}
1991
1992static void
1993slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1994{
1995 frame->prepare = prepare_schedule;
1996 frame->check = slf_check_nop;
1997}
1998
1999static void
2000slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2001{
2002 frame->prepare = prepare_cede;
2003 frame->check = slf_check_nop;
2004}
2005
2006static void
2007slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2008{
2009 frame->prepare = prepare_cede_notself;
2010 frame->check = slf_check_nop;
2011}
2012
2013/*
2014 * these not obviously related functions are all rolled into one
2015 * function to increase chances that they all will call transfer with the same
2016 * stack offset
2017 * SLF stands for "schedule-like-function".
2018 */
2019static OP *
2020pp_slf (pTHX)
2021{
2022 I32 checkmark; /* mark SP to see how many elements check has pushed */
2023
2024 /* set up the slf frame, unless it has already been set-up */
2025 /* the latter happens when a new coro has been started */
2026 /* or when a new cctx was attached to an existing coroutine */
2027 if (expect_true (!slf_frame.prepare))
2028 {
2029 /* first iteration */
2030 dSP;
2031 SV **arg = PL_stack_base + TOPMARK + 1;
2032 int items = SP - arg; /* args without function object */
2033 SV *gv = *sp;
2034
2035 /* do a quick consistency check on the "function" object, and if it isn't */
2036 /* for us, divert to the real entersub */
2037 if (SvTYPE (gv) != SVt_PVGV
2038 || !GvCV (gv)
2039 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2040 return PL_ppaddr[OP_ENTERSUB](aTHX);
2041
2042 if (!(PL_op->op_flags & OPf_STACKED))
2043 {
2044 /* ampersand-form of call, use @_ instead of stack */
2045 AV *av = GvAV (PL_defgv);
2046 arg = AvARRAY (av);
2047 items = AvFILLp (av) + 1;
2048 }
2049
2050 /* now call the init function, which needs to set up slf_frame */
2051 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2052 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2053
2054 /* pop args */
2055 SP = PL_stack_base + POPMARK;
2056
2057 PUTBACK;
2058 }
2059
2060 /* now that we have a slf_frame, interpret it! */
2061 /* we use a callback system not to make the code needlessly */
2062 /* complicated, but so we can run multiple perl coros from one cctx */
2063
2064 do
2065 {
2066 struct coro_transfer_args ta;
2067
2068 slf_frame.prepare (aTHX_ &ta);
2069 TRANSFER (ta, 0);
2070
2071 checkmark = PL_stack_sp - PL_stack_base;
2072 }
2073 while (slf_frame.check (aTHX_ &slf_frame));
2074
2075 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2076
2077 /* exception handling */
2078 if (expect_false (CORO_THROW))
2079 {
2080 SV *exception = sv_2mortal (CORO_THROW);
2081
2082 CORO_THROW = 0;
2083 sv_setsv (ERRSV, exception);
2084 croak (0);
2085 }
2086
2087 /* return value handling - mostly like entersub */
2088 /* make sure we put something on the stack in scalar context */
2089 if (GIMME_V == G_SCALAR)
2090 {
2091 dSP;
2092 SV **bot = PL_stack_base + checkmark;
2093
2094 if (sp == bot) /* too few, push undef */
2095 bot [1] = &PL_sv_undef;
2096 else if (sp != bot + 1) /* too many, take last one */
2097 bot [1] = *sp;
2098
2099 SP = bot + 1;
2100
2101 PUTBACK;
2102 }
2103
2104 return NORMAL;
2105}
2106
2107static void
2108api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2109{
2110 int i;
2111 SV **arg = PL_stack_base + ax;
2112 int items = PL_stack_sp - arg + 1;
2113
2114 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2115
2116 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2117 && PL_op->op_ppaddr != pp_slf)
2118 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2119
2120 CvFLAGS (cv) |= CVf_SLF;
2121 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2122 slf_cv = cv;
2123
2124 /* we patch the op, and then re-run the whole call */
2125 /* we have to put the same argument on the stack for this to work */
2126 /* and this will be done by pp_restore */
2127 slf_restore.op_next = (OP *)&slf_restore;
2128 slf_restore.op_type = OP_CUSTOM;
2129 slf_restore.op_ppaddr = pp_restore;
2130 slf_restore.op_first = PL_op;
2131
2132 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2133
2134 if (PL_op->op_flags & OPf_STACKED)
2135 {
2136 if (items > slf_arga)
2137 {
2138 slf_arga = items;
2139 free (slf_argv);
2140 slf_argv = malloc (slf_arga * sizeof (SV *));
2141 }
2142
2143 slf_argc = items;
2144
2145 for (i = 0; i < items; ++i)
2146 slf_argv [i] = SvREFCNT_inc (arg [i]);
2147 }
2148 else
2149 slf_argc = 0;
2150
2151 PL_op->op_ppaddr = pp_slf;
2152 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2153
2154 PL_op = (OP *)&slf_restore;
2155}
1759 2156
1760/*****************************************************************************/ 2157/*****************************************************************************/
1761/* PerlIO::cede */ 2158/* PerlIO::cede */
1762 2159
1763typedef struct 2160typedef struct
… …
1791 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2188 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1792 double now = nvtime (); 2189 double now = nvtime ();
1793 2190
1794 if (now >= self->next) 2191 if (now >= self->next)
1795 { 2192 {
1796 api_cede (); 2193 api_cede (aTHX);
1797 self->next = now + self->every; 2194 self->next = now + self->every;
1798 } 2195 }
1799 2196
1800 return PerlIOBuf_flush (aTHX_ f); 2197 return PerlIOBuf_flush (aTHX_ f);
1801} 2198}
… …
1831 PerlIOBuf_get_cnt, 2228 PerlIOBuf_get_cnt,
1832 PerlIOBuf_set_ptrcnt, 2229 PerlIOBuf_set_ptrcnt,
1833}; 2230};
1834 2231
1835/*****************************************************************************/ 2232/*****************************************************************************/
2233/* Coro::Semaphore & Coro::Signal */
1836 2234
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 * 2235static SV *
1847pp_restore (pTHX) 2236coro_waitarray_new (pTHX_ int count)
1848{ 2237{
2238 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2239 AV *av = newAV ();
2240 SV **ary;
2241
2242 /* unfortunately, building manually saves memory */
2243 Newx (ary, 2, SV *);
2244 AvALLOC (av) = ary;
2245 /*AvARRAY (av) = ary;*/
2246 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2247 AvMAX (av) = 1;
2248 AvFILLp (av) = 0;
2249 ary [0] = newSViv (count);
2250
2251 return newRV_noinc ((SV *)av);
2252}
2253
2254/* semaphore */
2255
2256static void
2257coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2258{
2259 SV *count_sv = AvARRAY (av)[0];
2260 IV count = SvIVX (count_sv);
2261
2262 count += adjust;
2263 SvIVX (count_sv) = count;
2264
2265 /* now wake up as many waiters as are expected to lock */
2266 while (count > 0 && AvFILLp (av) > 0)
2267 {
2268 SV *cb;
2269
2270 /* swap first two elements so we can shift a waiter */
2271 AvARRAY (av)[0] = AvARRAY (av)[1];
2272 AvARRAY (av)[1] = count_sv;
2273 cb = av_shift (av);
2274
2275 if (SvOBJECT (cb))
2276 {
2277 api_ready (aTHX_ cb);
2278 --count;
2279 }
2280 else if (SvTYPE (cb) == SVt_PVCV)
2281 {
2282 dSP;
2283 PUSHMARK (SP);
2284 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2285 PUTBACK;
2286 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2287 }
2288
2289 SvREFCNT_dec (cb);
2290 }
2291}
2292
2293static void
2294coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2295{
2296 /* call $sem->adjust (0) to possibly wake up some other waiters */
2297 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2298}
2299
2300static int
2301slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2302{
2303 AV *av = (AV *)frame->data;
2304 SV *count_sv = AvARRAY (av)[0];
2305
2306 /* if we are about to throw, don't actually acquire the lock, just throw */
2307 if (CORO_THROW)
2308 return 0;
2309 else if (SvIVX (count_sv) > 0)
2310 {
2311 SvSTATE_current->on_destroy = 0;
2312
2313 if (acquire)
2314 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2315 else
2316 coro_semaphore_adjust (aTHX_ av, 0);
2317
2318 return 0;
2319 }
2320 else
2321 {
2322 int i;
2323 /* if we were woken up but can't down, we look through the whole */
2324 /* waiters list and only add us if we aren't in there already */
2325 /* this avoids some degenerate memory usage cases */
2326
2327 for (i = 1; i <= AvFILLp (av); ++i)
2328 if (AvARRAY (av)[i] == SvRV (coro_current))
2329 return 1;
2330
2331 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2332 return 1;
2333 }
2334}
2335
2336static int
2337slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2338{
2339 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2340}
2341
2342static int
2343slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2344{
2345 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2346}
2347
2348static void
2349slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2350{
2351 AV *av = (AV *)SvRV (arg [0]);
2352
2353 if (SvIVX (AvARRAY (av)[0]) > 0)
2354 {
2355 frame->data = (void *)av;
2356 frame->prepare = prepare_nop;
2357 }
2358 else
2359 {
2360 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2361
2362 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2363 frame->prepare = prepare_schedule;
2364
2365 /* to avoid race conditions when a woken-up coro gets terminated */
2366 /* we arrange for a temporary on_destroy that calls adjust (0) */
2367 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2368 }
2369}
2370
2371static void
2372slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2373{
2374 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2375 frame->check = slf_check_semaphore_down;
2376}
2377
2378static void
2379slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2380{
2381 if (items >= 2)
2382 {
2383 /* callback form */
2384 AV *av = (AV *)SvRV (arg [0]);
2385 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2386
2387 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2388
2389 if (SvIVX (AvARRAY (av)[0]) > 0)
2390 coro_semaphore_adjust (aTHX_ av, 0);
2391
2392 frame->prepare = prepare_nop;
2393 frame->check = slf_check_nop;
2394 }
2395 else
2396 {
2397 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2398 frame->check = slf_check_semaphore_wait;
2399 }
2400}
2401
2402/* signal */
2403
2404static void
2405coro_signal_wake (pTHX_ AV *av, int count)
2406{
2407 SvIVX (AvARRAY (av)[0]) = 0;
2408
2409 /* now signal count waiters */
2410 while (count > 0 && AvFILLp (av) > 0)
2411 {
2412 SV *cb;
2413
2414 /* swap first two elements so we can shift a waiter */
2415 cb = AvARRAY (av)[0];
2416 AvARRAY (av)[0] = AvARRAY (av)[1];
2417 AvARRAY (av)[1] = cb;
2418
2419 cb = av_shift (av);
2420
2421 api_ready (aTHX_ cb);
2422 sv_setiv (cb, 0); /* signal waiter */
2423 SvREFCNT_dec (cb);
2424
2425 --count;
2426 }
2427}
2428
2429static int
2430slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2431{
2432 /* if we are about to throw, also stop waiting */
2433 return SvROK ((SV *)frame->data) && !CORO_THROW;
2434}
2435
2436static void
2437slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2438{
2439 AV *av = (AV *)SvRV (arg [0]);
2440
2441 if (SvIVX (AvARRAY (av)[0]))
2442 {
2443 SvIVX (AvARRAY (av)[0]) = 0;
2444 frame->prepare = prepare_nop;
2445 frame->check = slf_check_nop;
2446 }
2447 else
2448 {
2449 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2450
2451 av_push (av, waiter);
2452
2453 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2454 frame->prepare = prepare_schedule;
2455 frame->check = slf_check_signal_wait;
2456 }
2457}
2458
2459/*****************************************************************************/
2460/* Coro::AIO */
2461
2462#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2463
2464/* helper storage struct */
2465struct io_state
2466{
2467 int errorno;
2468 I32 laststype; /* U16 in 5.10.0 */
2469 int laststatval;
2470 Stat_t statcache;
2471};
2472
2473static void
2474coro_aio_callback (pTHX_ CV *cv)
2475{
2476 dXSARGS;
2477 AV *state = (AV *)GENSUB_ARG;
2478 SV *coro = av_pop (state);
2479 SV *data_sv = newSV (sizeof (struct io_state));
2480
2481 av_extend (state, items - 1);
2482
2483 sv_upgrade (data_sv, SVt_PV);
2484 SvCUR_set (data_sv, sizeof (struct io_state));
2485 SvPOK_only (data_sv);
2486
2487 {
2488 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2489
2490 data->errorno = errno;
2491 data->laststype = PL_laststype;
2492 data->laststatval = PL_laststatval;
2493 data->statcache = PL_statcache;
2494 }
2495
2496 /* now build the result vector out of all the parameters and the data_sv */
2497 {
2498 int i;
2499
2500 for (i = 0; i < items; ++i)
2501 av_push (state, SvREFCNT_inc_NN (ST (i)));
2502 }
2503
2504 av_push (state, data_sv);
2505
2506 api_ready (aTHX_ coro);
2507 SvREFCNT_dec (coro);
2508 SvREFCNT_dec ((AV *)state);
2509}
2510
2511static int
2512slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2513{
2514 AV *state = (AV *)frame->data;
2515
2516 /* if we are about to throw, return early */
2517 /* this does not cancel the aio request, but at least */
2518 /* it quickly returns */
2519 if (CORO_THROW)
2520 return 0;
2521
2522 /* one element that is an RV? repeat! */
2523 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2524 return 1;
2525
2526 /* restore status */
2527 {
2528 SV *data_sv = av_pop (state);
2529 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2530
2531 errno = data->errorno;
2532 PL_laststype = data->laststype;
2533 PL_laststatval = data->laststatval;
2534 PL_statcache = data->statcache;
2535
2536 SvREFCNT_dec (data_sv);
2537 }
2538
2539 /* push result values */
2540 {
1849 dSP; 2541 dSP;
2542 int i;
1850 2543
2544 EXTEND (SP, AvFILLp (state) + 1);
2545 for (i = 0; i <= AvFILLp (state); ++i)
2546 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2547
2548 PUTBACK;
2549 }
2550
2551 return 0;
2552}
2553
2554static void
2555slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2556{
2557 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2558 SV *coro_hv = SvRV (coro_current);
2559 struct coro *coro = SvSTATE_hv (coro_hv);
2560
2561 /* put our coroutine id on the state arg */
2562 av_push (state, SvREFCNT_inc_NN (coro_hv));
2563
2564 /* first see whether we have a non-zero priority and set it as AIO prio */
2565 if (coro->prio)
2566 {
2567 dSP;
2568
2569 static SV *prio_cv;
2570 static SV *prio_sv;
2571
2572 if (expect_false (!prio_cv))
2573 {
2574 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2575 prio_sv = newSViv (0);
2576 }
2577
2578 PUSHMARK (SP);
2579 sv_setiv (prio_sv, coro->prio);
2580 XPUSHs (prio_sv);
2581
2582 PUTBACK;
2583 call_sv (prio_cv, G_VOID | G_DISCARD);
2584 }
2585
2586 /* now call the original request */
2587 {
2588 dSP;
2589 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2590 int i;
2591
1851 PUSHMARK (SP); 2592 PUSHMARK (SP);
1852 2593
1853 EXTEND (SP, 3); 2594 /* first push all args to the stack */
1854 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2595 EXTEND (SP, items + 1);
1855 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1856 PUSHs ((SV *)CvGV (ssl_cv));
1857 2596
1858 RETURNOP (ssl_restore.op_first); 2597 for (i = 0; i < items; ++i)
1859} 2598 PUSHs (arg [i]);
1860 2599
1861/* declare prototype */ 2600 /* now push the callback closure */
1862XS(XS_Coro__State__set_stacklevel); 2601 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1863 2602
1864#define OPpENTERSUB_SSL 15 2603 /* 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; 2604 PUTBACK;
1891 switch (PL_op->op_private & OPpENTERSUB_SSL) 2605 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 } 2606 }
1918 2607
1919 TRANSFER (ta, 0); 2608 /* now that the requets is going, we loop toll we have a result */
1920 SPAGAIN; 2609 frame->data = (void *)state;
1921 2610 frame->prepare = prepare_schedule;
1922skip: 2611 frame->check = slf_check_aio_req;
1923 PUTBACK;
1924 SSL_TAIL;
1925 SPAGAIN;
1926 RETURN;
1927} 2612}
2613
2614static void
2615coro_aio_req_xs (pTHX_ CV *cv)
2616{
2617 dXSARGS;
2618
2619 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2620
2621 XSRETURN_EMPTY;
2622}
2623
2624/*****************************************************************************/
1928 2625
1929MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2626MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1930 2627
1931PROTOTYPES: DISABLE 2628PROTOTYPES: DISABLE
1932 2629
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: 2630BOOT:
1967{ 2631{
1968#ifdef USE_ITHREADS 2632#ifdef USE_ITHREADS
1969 MUTEX_INIT (&coro_lock);
1970# if CORO_PTHREAD 2633# if CORO_PTHREAD
1971 coro_thx = PERL_GET_CONTEXT; 2634 coro_thx = PERL_GET_CONTEXT;
1972# endif 2635# endif
1973#endif 2636#endif
1974 BOOT_PAGESIZE; 2637 BOOT_PAGESIZE;
… …
1995 main_top_env = PL_top_env; 2658 main_top_env = PL_top_env;
1996 2659
1997 while (main_top_env->je_prev) 2660 while (main_top_env->je_prev)
1998 main_top_env = main_top_env->je_prev; 2661 main_top_env = main_top_env->je_prev;
1999 2662
2663 {
2664 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2665
2666 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2667 hv_store_ent (PL_custom_op_names, slf,
2668 newSVpv ("coro_slf", 0), 0);
2669
2670 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2671 hv_store_ent (PL_custom_op_descs, slf,
2672 newSVpv ("coro schedule like function", 0), 0);
2673 }
2674
2000 coroapi.ver = CORO_API_VERSION; 2675 coroapi.ver = CORO_API_VERSION;
2001 coroapi.rev = CORO_API_REVISION; 2676 coroapi.rev = CORO_API_REVISION;
2677
2002 coroapi.transfer = api_transfer; 2678 coroapi.transfer = api_transfer;
2679
2680 coroapi.sv_state = SvSTATE_;
2681 coroapi.execute_slf = api_execute_slf;
2682 coroapi.prepare_nop = prepare_nop;
2683 coroapi.prepare_schedule = prepare_schedule;
2684 coroapi.prepare_cede = prepare_cede;
2685 coroapi.prepare_cede_notself = prepare_cede_notself;
2003 2686
2004 { 2687 {
2005 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2688 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2006 2689
2007 if (!svp) croak ("Time::HiRes is required"); 2690 if (!svp) croak ("Time::HiRes is required");
… …
2013 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2696 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2014} 2697}
2015 2698
2016SV * 2699SV *
2017new (char *klass, ...) 2700new (char *klass, ...)
2701 ALIAS:
2702 Coro::new = 1
2018 CODE: 2703 CODE:
2019{ 2704{
2020 struct coro *coro; 2705 struct coro *coro;
2021 MAGIC *mg; 2706 MAGIC *mg;
2022 HV *hv; 2707 HV *hv;
2708 CV *cb;
2023 int i; 2709 int i;
2710
2711 if (items > 1)
2712 {
2713 cb = coro_sv_2cv (aTHX_ ST (1));
2714
2715 if (!ix)
2716 {
2717 if (CvISXSUB (cb))
2718 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2719
2720 if (!CvROOT (cb))
2721 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2722 }
2723 }
2024 2724
2025 Newz (0, coro, 1, struct coro); 2725 Newz (0, coro, 1, struct coro);
2026 coro->args = newAV (); 2726 coro->args = newAV ();
2027 coro->flags = CF_NEW; 2727 coro->flags = CF_NEW;
2028 2728
… …
2033 coro->hv = hv = newHV (); 2733 coro->hv = hv = newHV ();
2034 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2734 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2035 mg->mg_flags |= MGf_DUP; 2735 mg->mg_flags |= MGf_DUP;
2036 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2736 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2037 2737
2738 if (items > 1)
2739 {
2038 av_extend (coro->args, items - 1); 2740 av_extend (coro->args, items - 1 + ix - 1);
2741
2742 if (ix)
2743 {
2744 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2745 cb = cv_coro_run;
2746 }
2747
2748 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2749
2039 for (i = 1; i < items; i++) 2750 for (i = 2; i < items; i++)
2040 av_push (coro->args, newSVsv (ST (i))); 2751 av_push (coro->args, newSVsv (ST (i)));
2752 }
2041} 2753}
2042 OUTPUT: 2754 OUTPUT:
2043 RETVAL 2755 RETVAL
2756
2757void
2758transfer (...)
2759 PROTOTYPE: $$
2760 CODE:
2761 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2044 2762
2045bool 2763bool
2046_destroy (SV *coro_sv) 2764_destroy (SV *coro_sv)
2047 CODE: 2765 CODE:
2048 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2766 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2055 CODE: 2773 CODE:
2056 _exit (code); 2774 _exit (code);
2057 2775
2058int 2776int
2059cctx_stacksize (int new_stacksize = 0) 2777cctx_stacksize (int new_stacksize = 0)
2778 PROTOTYPE: ;$
2060 CODE: 2779 CODE:
2061 RETVAL = cctx_stacksize; 2780 RETVAL = cctx_stacksize;
2062 if (new_stacksize) 2781 if (new_stacksize)
2063 { 2782 {
2064 cctx_stacksize = new_stacksize; 2783 cctx_stacksize = new_stacksize;
… …
2067 OUTPUT: 2786 OUTPUT:
2068 RETVAL 2787 RETVAL
2069 2788
2070int 2789int
2071cctx_max_idle (int max_idle = 0) 2790cctx_max_idle (int max_idle = 0)
2791 PROTOTYPE: ;$
2072 CODE: 2792 CODE:
2073 RETVAL = cctx_max_idle; 2793 RETVAL = cctx_max_idle;
2074 if (max_idle > 1) 2794 if (max_idle > 1)
2075 cctx_max_idle = max_idle; 2795 cctx_max_idle = max_idle;
2076 OUTPUT: 2796 OUTPUT:
2077 RETVAL 2797 RETVAL
2078 2798
2079int 2799int
2080cctx_count () 2800cctx_count ()
2801 PROTOTYPE:
2081 CODE: 2802 CODE:
2082 RETVAL = cctx_count; 2803 RETVAL = cctx_count;
2083 OUTPUT: 2804 OUTPUT:
2084 RETVAL 2805 RETVAL
2085 2806
2086int 2807int
2087cctx_idle () 2808cctx_idle ()
2809 PROTOTYPE:
2088 CODE: 2810 CODE:
2089 RETVAL = cctx_idle; 2811 RETVAL = cctx_idle;
2090 OUTPUT: 2812 OUTPUT:
2091 RETVAL 2813 RETVAL
2092 2814
2093void 2815void
2094list () 2816list ()
2817 PROTOTYPE:
2095 PPCODE: 2818 PPCODE:
2096{ 2819{
2097 struct coro *coro; 2820 struct coro *coro;
2098 for (coro = coro_first; coro; coro = coro->next) 2821 for (coro = coro_first; coro; coro = coro->next)
2099 if (coro->hv) 2822 if (coro->hv)
… …
2161 2884
2162void 2885void
2163throw (Coro::State self, SV *throw = &PL_sv_undef) 2886throw (Coro::State self, SV *throw = &PL_sv_undef)
2164 PROTOTYPE: $;$ 2887 PROTOTYPE: $;$
2165 CODE: 2888 CODE:
2889{
2890 struct coro *current = SvSTATE_current;
2891 SV **throwp = self == current ? &CORO_THROW : &self->except;
2166 SvREFCNT_dec (self->throw); 2892 SvREFCNT_dec (*throwp);
2167 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2893 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2894}
2168 2895
2169void 2896void
2170api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2897api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2898 PROTOTYPE: $;$
2899 C_ARGS: aTHX_ coro, flags
2171 2900
2172SV * 2901SV *
2173has_cctx (Coro::State coro) 2902has_cctx (Coro::State coro)
2174 PROTOTYPE: $ 2903 PROTOTYPE: $
2175 CODE: 2904 CODE:
… …
2199 OUTPUT: 2928 OUTPUT:
2200 RETVAL 2929 RETVAL
2201 2930
2202void 2931void
2203force_cctx () 2932force_cctx ()
2933 PROTOTYPE:
2204 CODE: 2934 CODE:
2205 struct coro *coro = SvSTATE (coro_current);
2206 coro->cctx->idle_sp = 0; 2935 SvSTATE_current->cctx->idle_sp = 0;
2207 2936
2208void 2937void
2209swap_defsv (Coro::State self) 2938swap_defsv (Coro::State self)
2210 PROTOTYPE: $ 2939 PROTOTYPE: $
2211 ALIAS: 2940 ALIAS:
2212 swap_defav = 1 2941 swap_defav = 1
2213 CODE: 2942 CODE:
2214 if (!self->slot) 2943 if (!self->slot)
2215 croak ("cannot swap state with coroutine that has no saved state"); 2944 croak ("cannot swap state with coroutine that has no saved state,");
2216 else 2945 else
2217 { 2946 {
2218 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2947 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2219 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2948 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2220 2949
2221 SV *tmp = *src; *src = *dst; *dst = tmp; 2950 SV *tmp = *src; *src = *dst; *dst = tmp;
2222 } 2951 }
2223 2952
2953
2224MODULE = Coro::State PACKAGE = Coro 2954MODULE = Coro::State PACKAGE = Coro
2225 2955
2226BOOT: 2956BOOT:
2227{ 2957{
2228 int i; 2958 int i;
2229 2959
2230 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2960 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2231 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2961 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2232 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2962 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2233 2963 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2964 cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);
2234 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2965 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2235 SvREADONLY_on (coro_current); 2966 SvREADONLY_on (coro_current);
2967
2968 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2969 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2970 cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler);
2971 cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new);
2236 2972
2237 coro_stash = gv_stashpv ("Coro", TRUE); 2973 coro_stash = gv_stashpv ("Coro", TRUE);
2238 2974
2239 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2975 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2240 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2976 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2252 coroapi.schedule = api_schedule; 2988 coroapi.schedule = api_schedule;
2253 coroapi.cede = api_cede; 2989 coroapi.cede = api_cede;
2254 coroapi.cede_notself = api_cede_notself; 2990 coroapi.cede_notself = api_cede_notself;
2255 coroapi.ready = api_ready; 2991 coroapi.ready = api_ready;
2256 coroapi.is_ready = api_is_ready; 2992 coroapi.is_ready = api_is_ready;
2257 coroapi.nready = &coro_nready; 2993 coroapi.nready = coro_nready;
2258 coroapi.current = coro_current; 2994 coroapi.current = coro_current;
2259 2995
2260 GCoroAPI = &coroapi; 2996 /*GCoroAPI = &coroapi;*/
2261 sv_setiv (sv, (IV)&coroapi); 2997 sv_setiv (sv, (IV)&coroapi);
2262 SvREADONLY_on (sv); 2998 SvREADONLY_on (sv);
2263 } 2999 }
2264} 3000}
3001
3002void
3003schedule (...)
3004 CODE:
3005 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3006
3007void
3008cede (...)
3009 CODE:
3010 CORO_EXECUTE_SLF_XS (slf_init_cede);
3011
3012void
3013cede_notself (...)
3014 CODE:
3015 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2265 3016
2266void 3017void
2267_set_current (SV *current) 3018_set_current (SV *current)
2268 PROTOTYPE: $ 3019 PROTOTYPE: $
2269 CODE: 3020 CODE:
… …
2272 3023
2273void 3024void
2274_set_readyhook (SV *hook) 3025_set_readyhook (SV *hook)
2275 PROTOTYPE: $ 3026 PROTOTYPE: $
2276 CODE: 3027 CODE:
2277 LOCK;
2278 SvREFCNT_dec (coro_readyhook); 3028 SvREFCNT_dec (coro_readyhook);
2279 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3029 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2280 UNLOCK;
2281 3030
2282int 3031int
2283prio (Coro::State coro, int newprio = 0) 3032prio (Coro::State coro, int newprio = 0)
3033 PROTOTYPE: $;$
2284 ALIAS: 3034 ALIAS:
2285 nice = 1 3035 nice = 1
2286 CODE: 3036 CODE:
2287{ 3037{
2288 RETVAL = coro->prio; 3038 RETVAL = coro->prio;
… …
2303 3053
2304SV * 3054SV *
2305ready (SV *self) 3055ready (SV *self)
2306 PROTOTYPE: $ 3056 PROTOTYPE: $
2307 CODE: 3057 CODE:
2308 RETVAL = boolSV (api_ready (self)); 3058 RETVAL = boolSV (api_ready (aTHX_ self));
2309 OUTPUT: 3059 OUTPUT:
2310 RETVAL 3060 RETVAL
2311 3061
2312int 3062int
2313nready (...) 3063nready (...)
… …
2315 CODE: 3065 CODE:
2316 RETVAL = coro_nready; 3066 RETVAL = coro_nready;
2317 OUTPUT: 3067 OUTPUT:
2318 RETVAL 3068 RETVAL
2319 3069
2320# for async_pool speedup
2321void 3070void
2322_pool_1 (SV *cb) 3071_pool_handler (...)
2323 CODE: 3072 CODE:
2324{ 3073 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 3074
2332 if (!invoke) 3075void
3076async_pool (SV *cv, ...)
3077 PROTOTYPE: &@
3078 PPCODE:
3079{
3080 HV *hv = (HV *)av_pop (av_async_pool);
3081 AV *av = newAV ();
3082 SV *cb = ST (0);
3083 int i;
3084
3085 av_extend (av, items - 2);
3086 for (i = 1; i < items; ++i)
3087 av_push (av, SvREFCNT_inc_NN (ST (i)));
3088
3089 if ((SV *)hv == &PL_sv_undef)
2333 { 3090 {
2334 SV *old = PL_diehook; 3091 PUSHMARK (SP);
2335 PL_diehook = 0; 3092 EXTEND (SP, 2);
2336 SvREFCNT_dec (old); 3093 PUSHs (sv_Coro);
2337 croak ("\3async_pool terminate\2\n"); 3094 PUSHs ((SV *)cv_pool_handler);
3095 PUTBACK;
3096 call_sv (cv_coro_new, G_SCALAR);
3097 SPAGAIN;
3098
3099 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2338 } 3100 }
2339 3101
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 { 3102 {
2353 av_fill (defav, len - 1); 3103 struct coro *coro = SvSTATE_hv (hv);
2354 for (i = 0; i < len; ++i) 3104
2355 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3105 assert (!coro->invoke_cb);
3106 assert (!coro->invoke_av);
3107 coro->invoke_cb = SvREFCNT_inc (cb);
3108 coro->invoke_av = av;
2356 } 3109 }
2357 3110
3111 api_ready ((SV *)hv);
3112
3113 if (GIMME_V != G_VOID)
3114 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3115 else
2358 SvREFCNT_dec (invoke); 3116 SvREFCNT_dec (hv);
2359} 3117}
2360 3118
2361void 3119SV *
2362_pool_2 (SV *cb) 3120rouse_cb ()
3121 PROTOTYPE:
2363 CODE: 3122 CODE:
2364{ 3123 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: 3124 OUTPUT:
2437 RETVAL 3125 RETVAL
2438 3126
2439#endif
2440
2441
2442MODULE = Coro::State PACKAGE = Coro::AIO
2443
2444void 3127void
2445_get_state (SV *self) 3128rouse_wait (...)
3129 PROTOTYPE: ;$
2446 PPCODE: 3130 PPCODE:
2447{ 3131 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 3132
2456 data->errorno = errno;
2457 data->laststype = PL_laststype;
2458 data->laststatval = PL_laststatval;
2459 data->statcache = PL_statcache;
2460 3133
2461 av_extend (av, AvFILLp (defav) + 1 + 1); 3134MODULE = Coro::State PACKAGE = PerlIO::cede
2462 3135
2463 for (i = 0; i <= AvFILLp (defav); ++i) 3136BOOT:
2464 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3137 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2465 3138
2466 av_push (av, data_sv);
2467 3139
2468 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3140MODULE = Coro::State PACKAGE = Coro::Semaphore
2469 3141
2470 api_ready (self); 3142SV *
2471} 3143new (SV *klass, SV *count = 0)
3144 CODE:
3145 RETVAL = sv_bless (
3146 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3147 GvSTASH (CvGV (cv))
3148 );
3149 OUTPUT:
3150 RETVAL
3151
3152# helper for Coro::Channel
3153SV *
3154_alloc (int count)
3155 CODE:
3156 RETVAL = coro_waitarray_new (aTHX_ count);
3157 OUTPUT:
3158 RETVAL
3159
3160SV *
3161count (SV *self)
3162 CODE:
3163 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3164 OUTPUT:
3165 RETVAL
2472 3166
2473void 3167void
2474_set_state (SV *state) 3168up (SV *self, int adjust = 1)
2475 PROTOTYPE: $ 3169 ALIAS:
3170 adjust = 1
3171 CODE:
3172 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3173
3174void
3175down (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3178
3179void
3180wait (...)
3181 CODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3183
3184void
3185try (SV *self)
3186 PPCODE:
3187{
3188 AV *av = (AV *)SvRV (self);
3189 SV *count_sv = AvARRAY (av)[0];
3190 IV count = SvIVX (count_sv);
3191
3192 if (count > 0)
3193 {
3194 --count;
3195 SvIVX (count_sv) = count;
3196 XSRETURN_YES;
3197 }
3198 else
3199 XSRETURN_NO;
3200}
3201
3202void
3203waiters (SV *self)
3204 PPCODE:
3205{
3206 AV *av = (AV *)SvRV (self);
3207 int wcount = AvFILLp (av) + 1 - 1;
3208
3209 if (GIMME_V == G_SCALAR)
3210 XPUSHs (sv_2mortal (newSViv (wcount)));
3211 else
3212 {
3213 int i;
3214 EXTEND (SP, wcount);
3215 for (i = 1; i <= wcount; ++i)
3216 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3217 }
3218}
3219
3220MODULE = Coro::State PACKAGE = Coro::Signal
3221
3222SV *
3223new (SV *klass)
2476 PPCODE: 3224 CODE:
3225 RETVAL = sv_bless (
3226 coro_waitarray_new (aTHX_ 0),
3227 GvSTASH (CvGV (cv))
3228 );
3229 OUTPUT:
3230 RETVAL
3231
3232void
3233wait (...)
3234 CODE:
3235 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3236
3237void
3238broadcast (SV *self)
3239 CODE:
2477{ 3240{
2478 AV *av = (AV *)SvRV (state); 3241 AV *av = (AV *)SvRV (self);
2479 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3242 coro_signal_wake (aTHX_ av, AvFILLp (av));
2480 int i; 3243}
2481 3244
2482 errno = data->errorno; 3245void
2483 PL_laststype = data->laststype; 3246send (SV *self)
2484 PL_laststatval = data->laststatval; 3247 CODE:
2485 PL_statcache = data->statcache; 3248{
3249 AV *av = (AV *)SvRV (self);
2486 3250
2487 EXTEND (SP, AvFILLp (av)); 3251 if (AvFILLp (av))
2488 for (i = 0; i < AvFILLp (av); ++i) 3252 coro_signal_wake (aTHX_ av, 1);
2489 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3253 else
3254 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2490} 3255}
3256
3257IV
3258awaited (SV *self)
3259 CODE:
3260 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3261 OUTPUT:
3262 RETVAL
2491 3263
2492 3264
2493MODULE = Coro::State PACKAGE = Coro::AnyEvent 3265MODULE = Coro::State PACKAGE = Coro::AnyEvent
2494 3266
2495BOOT: 3267BOOT:
2496 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3268 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2497 3269
2498SV * 3270void
2499_schedule (...) 3271_schedule (...)
2500 PROTOTYPE: @
2501 CODE: 3272 CODE:
2502{ 3273{
2503 static int incede; 3274 static int incede;
2504 3275
2505 api_cede_notself (); 3276 api_cede_notself (aTHX);
2506 3277
2507 ++incede; 3278 ++incede;
2508 while (coro_nready >= incede && api_cede ()) 3279 while (coro_nready >= incede && api_cede (aTHX))
2509 ; 3280 ;
2510 3281
2511 sv_setsv (sv_activity, &PL_sv_undef); 3282 sv_setsv (sv_activity, &PL_sv_undef);
2512 if (coro_nready >= incede) 3283 if (coro_nready >= incede)
2513 { 3284 {
2514 PUSHMARK (SP); 3285 PUSHMARK (SP);
2515 PUTBACK; 3286 PUTBACK;
2516 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3287 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2517 SPAGAIN;
2518 } 3288 }
2519 3289
2520 --incede; 3290 --incede;
2521} 3291}
2522 3292
2523 3293
2524MODULE = Coro::State PACKAGE = PerlIO::cede 3294MODULE = Coro::State PACKAGE = Coro::AIO
2525 3295
2526BOOT: 3296void
2527 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3297_register (char *target, char *proto, SV *req)
3298 CODE:
3299{
3300 CV *req_cv = coro_sv_2cv (aTHX_ req);
3301 /* newXSproto doesn't return the CV on 5.8 */
3302 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3303 sv_setpv ((SV *)slf_cv, proto);
3304 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3305}
2528 3306

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