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Comparing Coro/Coro/State.xs (file contents):
Revision 1.265 by root, Fri Nov 14 02:42:26 2008 UTC vs.
Revision 1.325 by root, Sun Nov 23 06:48:45 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
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
100 109
101/* 5.8.7 */ 110/* 5.8.7 */
102#ifndef SvRV_set 111#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 113#endif
… …
116# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
121#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
122#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
123 137
124#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
125 139
126#if __GNUC__ >= 3 140#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
… …
137#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
138 152
139#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
140 154
141#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
142 157
143#ifdef USE_ITHREADS 158#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 159# if CORO_PTHREAD
149static void *coro_thx; 160static void *coro_thx;
150# endif 161# endif
151
152#else
153
154# define LOCK (void)0
155# define UNLOCK (void)0
156
157#endif 162#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};
173 163
174static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
175 169
176static U32 cctx_gen; 170static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 174static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184 177
185struct transfer_args 178static AV *av_destroy; /* destruction queue */
186{ 179static SV *sv_manager; /* the manager coro */
187 struct coro *prev, *next;
188};
189 180
190static GV *irsgv; /* $/ */ 181static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 182static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 183static SV *rv_diehook;
193static SV *rv_warnhook; 184static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */ 185static HV *hv_sig; /* %SIG */
195 186
196/* async_pool helper stuff */ 187/* async_pool helper stuff */
197static SV *sv_pool_rss; 188static SV *sv_pool_rss;
198static SV *sv_pool_size; 189static SV *sv_pool_size;
190static SV *sv_async_pool_idle; /* description string */
199static AV *av_async_pool; 191static AV *av_async_pool; /* idle pool */
192static SV *sv_Coro; /* class string */
193static CV *cv_pool_handler;
194static CV *cv_coro_state_new;
200 195
201/* Coro::AnyEvent */ 196/* Coro::AnyEvent */
202static SV *sv_activity; 197static SV *sv_activity;
203 198
204static struct coro_cctx *cctx_first; 199static struct coro_cctx *cctx_first;
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 207 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 208 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 209};
215 210
216/* this is a structure representing a c-level coroutine */ 211/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 212typedef struct coro_cctx
213{
218 struct coro_cctx *next; 214 struct coro_cctx *next;
219 215
220 /* the stack */ 216 /* the stack */
221 void *sptr; 217 void *sptr;
222 size_t ssize; 218 size_t ssize;
… …
231#if CORO_USE_VALGRIND 227#if CORO_USE_VALGRIND
232 int valgrind_id; 228 int valgrind_id;
233#endif 229#endif
234 unsigned char flags; 230 unsigned char flags;
235} coro_cctx; 231} coro_cctx;
232
233coro_cctx *cctx_current; /* the currently running cctx */
234
235/*****************************************************************************/
236 236
237enum { 237enum {
238 CF_RUNNING = 0x0001, /* coroutine is running */ 238 CF_RUNNING = 0x0001, /* coroutine is running */
239 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
240 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
242}; 242};
243 243
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 244/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 245typedef struct
246{
246 SV *defsv; 247 SV *defsv;
247 AV *defav; 248 AV *defav;
248 SV *errsv; 249 SV *errsv;
249 SV *irsgv; 250 SV *irsgv;
250#define VAR(name,type) type name; 251#define VAR(name,type) type name;
… …
254 255
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 256#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 257
257/* this is a structure representing a perl-level coroutine */ 258/* this is a structure representing a perl-level coroutine */
258struct coro { 259struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 260 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 261 coro_cctx *cctx;
261 262
262 /* process data */ 263 /* state data */
264 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 265 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 266 perl_slots *slot; /* basically the saved sp */
265 267
268 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 269 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 270 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 271 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 272 HV *hv; /* the perl hash associated with this coro, if any */
273 void (*on_destroy)(pTHX_ struct coro *coro);
270 274
271 /* statistics */ 275 /* statistics */
272 int usecount; /* number of transfers to this coro */ 276 int usecount; /* number of transfers to this coro */
273 277
274 /* coro process data */ 278 /* coro process data */
275 int prio; 279 int prio;
276 SV *throw; /* exception to be thrown */ 280 SV *except; /* exception to be thrown */
281 SV *rouse_cb;
277 282
278 /* async_pool */ 283 /* async_pool */
279 SV *saved_deffh; 284 SV *saved_deffh;
285 SV *invoke_cb;
286 AV *invoke_av;
280 287
281 /* linked list */ 288 /* linked list */
282 struct coro *next, *prev; 289 struct coro *next, *prev;
283}; 290};
284 291
285typedef struct coro *Coro__State; 292typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 293typedef struct coro *Coro__State_or_hashref;
294
295/* the following variables are effectively part of the perl context */
296/* and get copied between struct coro and these variables */
297/* the mainr easonw e don't support windows process emulation */
298static struct CoroSLF slf_frame; /* the current slf frame */
287 299
288/** Coro ********************************************************************/ 300/** Coro ********************************************************************/
289 301
290#define PRIO_MAX 3 302#define PRIO_MAX 3
291#define PRIO_HIGH 1 303#define PRIO_HIGH 1
… …
296 308
297/* for Coro.pm */ 309/* for Coro.pm */
298static SV *coro_current; 310static SV *coro_current;
299static SV *coro_readyhook; 311static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 312static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
301static int coro_nready; 313static CV *cv_coro_run, *cv_coro_terminate;
302static struct coro *coro_first; 314static struct coro *coro_first;
315#define coro_nready coroapi.nready
303 316
304/** lowlevel stuff **********************************************************/ 317/** lowlevel stuff **********************************************************/
305 318
306static SV * 319static SV *
307coro_get_sv (pTHX_ const char *name, int create) 320coro_get_sv (pTHX_ const char *name, int create)
… …
331 get_hv (name, create); 344 get_hv (name, create);
332#endif 345#endif
333 return get_hv (name, create); 346 return get_hv (name, create);
334} 347}
335 348
349/* may croak */
350INLINE CV *
351coro_sv_2cv (pTHX_ SV *sv)
352{
353 HV *st;
354 GV *gvp;
355 return sv_2cv (sv, &st, &gvp, 0);
356}
357
336static AV * 358static AV *
337coro_clone_padlist (pTHX_ CV *cv) 359coro_derive_padlist (pTHX_ CV *cv)
338{ 360{
339 AV *padlist = CvPADLIST (cv); 361 AV *padlist = CvPADLIST (cv);
340 AV *newpadlist, *newpad; 362 AV *newpadlist, *newpad;
341 363
342 newpadlist = newAV (); 364 newpadlist = newAV ();
… …
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 414 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 415
394 return 0; 416 return 0;
395} 417}
396 418
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext 419#define CORO_MAGIC_type_cv 26
398#define CORO_MAGIC_type_state PERL_MAGIC_ext 420#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 421
400static MGVTBL coro_cv_vtbl = { 422static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 423 0, 0, 0, 0,
402 coro_cv_free 424 coro_cv_free
403}; 425};
404 426
427#define CORO_MAGIC_NN(sv, type) \
428 (expect_true (SvMAGIC (sv)->mg_type == type) \
429 ? SvMAGIC (sv) \
430 : mg_find (sv, type))
431
405#define CORO_MAGIC(sv, type) \ 432#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \ 433 (expect_true (SvMAGIC (sv)) \
407 ? SvMAGIC (sv)->mg_type == type \ 434 ? CORO_MAGIC_NN (sv, type) \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0 435 : 0)
411 436
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 437#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) 438#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
414 439
415INLINE struct coro * 440INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro) 441SvSTATE_ (pTHX_ SV *coro)
417{ 442{
418 HV *stash; 443 HV *stash;
… …
435 mg = CORO_MAGIC_state (coro); 460 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr; 461 return (struct coro *)mg->mg_ptr;
437} 462}
438 463
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 464#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
465
466/* faster than SvSTATE, but expects a coroutine hv */
467#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
468#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
440 469
441/* the next two functions merely cache the padlists */ 470/* the next two functions merely cache the padlists */
442static void 471static void
443get_padlist (pTHX_ CV *cv) 472get_padlist (pTHX_ CV *cv)
444{ 473{
… …
450 else 479 else
451 { 480 {
452#if CORO_PREFER_PERL_FUNCTIONS 481#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 482 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 483 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 484 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 485 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 486 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 487 SvREFCNT_dec (cp);
459#else 488#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 489 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
461#endif 490#endif
462 } 491 }
463} 492}
464 493
465static void 494static void
… …
511 CvPADLIST (cv) = (AV *)POPs; 540 CvPADLIST (cv) = (AV *)POPs;
512 } 541 }
513 542
514 PUTBACK; 543 PUTBACK;
515 } 544 }
545
546 slf_frame = c->slf_frame;
547 CORO_THROW = c->except;
516} 548}
517 549
518static void 550static void
519save_perl (pTHX_ Coro__State c) 551save_perl (pTHX_ Coro__State c)
520{ 552{
553 c->except = CORO_THROW;
554 c->slf_frame = slf_frame;
555
521 { 556 {
522 dSP; 557 dSP;
523 I32 cxix = cxstack_ix; 558 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 559 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 560 PERL_SI *top_si = PL_curstackinfo;
… …
592 #undef VAR 627 #undef VAR
593 } 628 }
594} 629}
595 630
596/* 631/*
597 * allocate various perl stacks. This is an exact copy 632 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 633 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 634 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 635 * not usually need a lot of stackspace.
601 */ 636 */
602#if CORO_PREFER_PERL_FUNCTIONS 637#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 638# define coro_init_stacks(thx) init_stacks ()
604#else 639#else
605static void 640static void
606coro_init_stacks (pTHX) 641coro_init_stacks (pTHX)
607{ 642{
608 PL_curstackinfo = new_stackinfo(32, 8); 643 PL_curstackinfo = new_stackinfo(32, 8);
… …
671#if !PERL_VERSION_ATLEAST (5,10,0) 706#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 707 Safefree (PL_retstack);
673#endif 708#endif
674} 709}
675 710
711#define CORO_RSS \
712 rss += sizeof (SYM (curstackinfo)); \
713 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
714 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
715 rss += SYM (tmps_max) * sizeof (SV *); \
716 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
717 rss += SYM (scopestack_max) * sizeof (I32); \
718 rss += SYM (savestack_max) * sizeof (ANY);
719
676static size_t 720static size_t
677coro_rss (pTHX_ struct coro *coro) 721coro_rss (pTHX_ struct coro *coro)
678{ 722{
679 size_t rss = sizeof (*coro); 723 size_t rss = sizeof (*coro);
680 724
681 if (coro->mainstack) 725 if (coro->mainstack)
682 { 726 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 727 if (coro->flags & CF_RUNNING)
687 { 728 {
688 slot = &tmp_slot; 729 #define SYM(sym) PL_ ## sym
689 730 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 731 #undef SYM
693 } 732 }
694 else 733 else
695 slot = coro->slot;
696
697 if (slot)
698 { 734 {
699 rss += sizeof (slot->curstackinfo); 735 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 736 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 737 #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 } 738 }
711 } 739 }
712 740
713 return rss; 741 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 int gimme = GIMME_V;
728
729 if (gimme == G_SCALAR)
730 XPUSHs (&PL_sv_undef);
731
732 PUTBACK;
733} 742}
734 743
735/** coroutine stack handling ************************************************/ 744/** coroutine stack handling ************************************************/
736 745
737static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 746static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
823 832
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 833 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 834}
826 835
827static void 836static void
837prepare_nop (pTHX_ struct coro_transfer_args *ta)
838{
839 /* kind of mega-hacky, but works */
840 ta->next = ta->prev = (struct coro *)ta;
841}
842
843static int
844slf_check_nop (pTHX_ struct CoroSLF *frame)
845{
846 return 0;
847}
848
849static int
850slf_check_repeat (pTHX_ struct CoroSLF *frame)
851{
852 return 1;
853}
854
855static UNOP coro_setup_op;
856
857static void NOINLINE /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 858coro_setup (pTHX_ struct coro *coro)
829{ 859{
830 /* 860 /*
831 * emulate part of the perl startup here. 861 * emulate part of the perl startup here.
832 */ 862 */
… …
859 { 889 {
860 dSP; 890 dSP;
861 UNOP myop; 891 UNOP myop;
862 892
863 Zero (&myop, 1, UNOP); 893 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 894 myop.op_next = Nullop;
895 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 896 myop.op_flags = OPf_WANT_VOID;
866 897
867 PUSHMARK (SP); 898 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 899 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 900 PUTBACK;
870 PL_op = (OP *)&myop; 901 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 902 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 903 }
874 904
875 /* this newly created coroutine might be run on an existing cctx which most 905 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 906 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 * so we have to emulate entering pp_set_stacklevel here.
878 */ 907 */
879 SSL_HEAD; 908 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
909 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
910
911 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
912 coro_setup_op.op_next = PL_op;
913 coro_setup_op.op_type = OP_ENTERSUB;
914 coro_setup_op.op_ppaddr = pp_slf;
915 /* no flags etc. required, as an init function won't be called */
916
917 PL_op = (OP *)&coro_setup_op;
918
919 /* copy throw, in case it was set before coro_setup */
920 CORO_THROW = coro->except;
880} 921}
881 922
882static void 923static void
883coro_destruct (pTHX_ struct coro *coro) 924coro_destruct (pTHX_ struct coro *coro)
884{ 925{
… …
908 949
909 SvREFCNT_dec (PL_diehook); 950 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook); 951 SvREFCNT_dec (PL_warnhook);
911 952
912 SvREFCNT_dec (coro->saved_deffh); 953 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 954 SvREFCNT_dec (coro->rouse_cb);
955 SvREFCNT_dec (coro->invoke_cb);
956 SvREFCNT_dec (coro->invoke_av);
914 957
915 coro_destruct_stacks (aTHX); 958 coro_destruct_stacks (aTHX);
916} 959}
917 960
918INLINE void 961INLINE void
… …
928static int 971static int
929runops_trace (pTHX) 972runops_trace (pTHX)
930{ 973{
931 COP *oldcop = 0; 974 COP *oldcop = 0;
932 int oldcxix = -2; 975 int oldcxix = -2;
933 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 976
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 977 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 978 {
938 PERL_ASYNC_CHECK (); 979 PERL_ASYNC_CHECK ();
939 980
940 if (cctx->flags & CC_TRACE_ALL) 981 if (cctx_current->flags & CC_TRACE_ALL)
941 { 982 {
942 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 983 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
943 { 984 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 985 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 986 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 987 AV *av = newAV (); /* return values */
947 SV **cb; 988 SV **cb;
… …
984 1025
985 if (PL_curcop != &PL_compiling) 1026 if (PL_curcop != &PL_compiling)
986 { 1027 {
987 SV **cb; 1028 SV **cb;
988 1029
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1030 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1031 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1032 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1033
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1034 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1035 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1036 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1037 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1038 SV *fullname = sv_2mortal (newSV (0));
999 1039
1000 if (isGV (gv)) 1040 if (isGV (gv))
… …
1005 SAVETMPS; 1045 SAVETMPS;
1006 EXTEND (SP, 3); 1046 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1047 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1048 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1049 PUSHs (fullname);
1010 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1050 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1011 PUTBACK; 1051 PUTBACK;
1012 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1052 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1013 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1053 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1014 SPAGAIN; 1054 SPAGAIN;
1015 FREETMPS; 1055 FREETMPS;
… …
1018 } 1058 }
1019 1059
1020 oldcxix = cxstack_ix; 1060 oldcxix = cxstack_ix;
1021 } 1061 }
1022 1062
1023 if (cctx->flags & CC_TRACE_LINE) 1063 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1064 {
1025 dSP; 1065 dSP;
1026 1066
1027 PL_runops = RUNOPS_DEFAULT; 1067 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1068 ENTER;
… …
1047 1087
1048 TAINT_NOT; 1088 TAINT_NOT;
1049 return 0; 1089 return 0;
1050} 1090}
1051 1091
1092static struct CoroSLF cctx_ssl_frame;
1093
1052static void 1094static void
1053prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1095slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1096{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1097 ta->prev = 0;
1057} 1098}
1058 1099
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1100static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1101slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */ 1102{
1062/* also initialises PL_top_env */ 1103 *frame = cctx_ssl_frame;
1104
1105 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1106}
1107
1108/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1063static void NOINLINE 1109static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx) 1110cctx_prepare (pTHX)
1065{ 1111{
1066 dSP;
1067 UNOP myop;
1068
1069 PL_top_env = &PL_start_env; 1112 PL_top_env = &PL_start_env;
1070 1113
1071 if (cctx->flags & CC_TRACE) 1114 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1115 PL_runops = runops_trace;
1073 1116
1074 Zero (&myop, 1, UNOP); 1117 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1118 * that can lead to creation of a new cctx */
1076 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1119 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1120 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1077 1121
1078 PUSHMARK (SP); 1122 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1123 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1124
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1125 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1126 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1127}
1087 1128
1088/* the tail of transfer: execute stuff we can only do after a transfer */ 1129/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void 1130INLINE void
1090transfer_tail (pTHX) 1131transfer_tail (pTHX)
1091{ 1132{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX); 1133 free_coro_mortal (aTHX);
1097 UNLOCK;
1098
1099 if (expect_false (next->throw))
1100 {
1101 SV *exception = sv_2mortal (next->throw);
1102
1103 next->throw = 0;
1104 sv_setsv (ERRSV, exception);
1105 croak (0);
1106 }
1107} 1134}
1108 1135
1109/* 1136/*
1110 * this is a _very_ stripped down perl interpreter ;) 1137 * this is a _very_ stripped down perl interpreter ;)
1111 */ 1138 */
… …
1118# endif 1145# endif
1119#endif 1146#endif
1120 { 1147 {
1121 dTHX; 1148 dTHX;
1122 1149
1123 /* we are the alternative tail to pp_set_stacklevel */ 1150 /* normally we would need to skip the entersub here */
1124 /* so do the same things here */ 1151 /* not doing so will re-execute it, which is exactly what we want */
1125 SSL_TAIL;
1126
1127 /* we now skip the op that did lead to transfer() */
1128 PL_op = PL_op->op_next; 1152 /* PL_nop = PL_nop->op_next */
1129 1153
1130 /* inject a fake subroutine call to cctx_init */ 1154 /* inject a fake subroutine call to cctx_init */
1131 cctx_prepare (aTHX_ (coro_cctx *)arg); 1155 cctx_prepare (aTHX);
1132 1156
1133 /* cctx_run is the alternative tail of transfer() */ 1157 /* cctx_run is the alternative tail of transfer() */
1134 transfer_tail (aTHX); 1158 transfer_tail (aTHX);
1135 1159
1136 /* somebody or something will hit me for both perl_run and PL_restartop */ 1160 /* somebody or something will hit me for both perl_run and PL_restartop */
1137 PL_restartop = PL_op; 1161 PL_restartop = PL_op;
1138 perl_run (PL_curinterp); 1162 perl_run (PL_curinterp);
1163 /*
1164 * Unfortunately, there is no way to get at the return values of the
1165 * coro body here, as perl_run destroys these
1166 */
1139 1167
1140 /* 1168 /*
1141 * If perl-run returns we assume exit() was being called or the coro 1169 * If perl-run returns we assume exit() was being called or the coro
1142 * fell off the end, which seems to be the only valid (non-bug) 1170 * fell off the end, which seems to be the only valid (non-bug)
1143 * reason for perl_run to return. We try to exit by jumping to the 1171 * reason for perl_run to return. We try to exit by jumping to the
… …
1227cctx_destroy (coro_cctx *cctx) 1255cctx_destroy (coro_cctx *cctx)
1228{ 1256{
1229 if (!cctx) 1257 if (!cctx)
1230 return; 1258 return;
1231 1259
1260 assert (cctx != cctx_current);//D temporary
1261
1232 --cctx_count; 1262 --cctx_count;
1233 coro_destroy (&cctx->cctx); 1263 coro_destroy (&cctx->cctx);
1234 1264
1235 /* coro_transfer creates new, empty cctx's */ 1265 /* coro_transfer creates new, empty cctx's */
1236 if (cctx->sptr) 1266 if (cctx->sptr)
… …
1294/** coroutine switching *****************************************************/ 1324/** coroutine switching *****************************************************/
1295 1325
1296static void 1326static void
1297transfer_check (pTHX_ struct coro *prev, struct coro *next) 1327transfer_check (pTHX_ struct coro *prev, struct coro *next)
1298{ 1328{
1329 /* TODO: throwing up here is considered harmful */
1330
1299 if (expect_true (prev != next)) 1331 if (expect_true (prev != next))
1300 { 1332 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1333 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1334 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1303 1335
1304 if (expect_false (next->flags & CF_RUNNING)) 1336 if (expect_false (next->flags & CF_RUNNING))
1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1337 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1306 1338
1307 if (expect_false (next->flags & CF_DESTROYED)) 1339 if (expect_false (next->flags & CF_DESTROYED))
1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1340 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1309 1341
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1342#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1343 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1344 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif 1345#endif
1314 } 1346 }
1315} 1347}
1316 1348
1317/* always use the TRANSFER macro */ 1349/* always use the TRANSFER macro */
1318static void NOINLINE 1350static void NOINLINE /* noinline so we have a fixed stackframe */
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1351transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1352{
1321 dSTACKLEVEL; 1353 dSTACKLEVEL;
1322 1354
1323 /* sometimes transfer is only called to set idle_sp */ 1355 /* sometimes transfer is only called to set idle_sp */
1324 if (expect_false (!next)) 1356 if (expect_false (!prev))
1325 { 1357 {
1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1358 cctx_current->idle_sp = STACKLEVEL;
1327 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1359 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1328 } 1360 }
1329 else if (expect_true (prev != next)) 1361 else if (expect_true (prev != next))
1330 { 1362 {
1331 coro_cctx *prev__cctx; 1363 coro_cctx *cctx_prev;
1332 1364
1333 if (expect_false (prev->flags & CF_NEW)) 1365 if (expect_false (prev->flags & CF_NEW))
1334 { 1366 {
1335 /* create a new empty/source context */ 1367 /* create a new empty/source context */
1336 prev->cctx = cctx_new_empty ();
1337 prev->flags &= ~CF_NEW; 1368 prev->flags &= ~CF_NEW;
1338 prev->flags |= CF_RUNNING; 1369 prev->flags |= CF_RUNNING;
1339 } 1370 }
1340 1371
1341 prev->flags &= ~CF_RUNNING; 1372 prev->flags &= ~CF_RUNNING;
1342 next->flags |= CF_RUNNING; 1373 next->flags |= CF_RUNNING;
1343
1344 LOCK;
1345 1374
1346 /* first get rid of the old state */ 1375 /* first get rid of the old state */
1347 save_perl (aTHX_ prev); 1376 save_perl (aTHX_ prev);
1348 1377
1349 if (expect_false (next->flags & CF_NEW)) 1378 if (expect_false (next->flags & CF_NEW))
… …
1354 coro_setup (aTHX_ next); 1383 coro_setup (aTHX_ next);
1355 } 1384 }
1356 else 1385 else
1357 load_perl (aTHX_ next); 1386 load_perl (aTHX_ next);
1358 1387
1359 prev__cctx = prev->cctx; 1388 assert (!prev->cctx);//D temporary
1360 1389
1361 /* possibly untie and reuse the cctx */ 1390 /* possibly untie and reuse the cctx */
1362 if (expect_true ( 1391 if (expect_true (
1363 prev__cctx->idle_sp == STACKLEVEL 1392 cctx_current->idle_sp == STACKLEVEL
1364 && !(prev__cctx->flags & CC_TRACE) 1393 && !(cctx_current->flags & CC_TRACE)
1365 && !force_cctx 1394 && !force_cctx
1366 )) 1395 ))
1367 { 1396 {
1368 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1397 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1369 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1398 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1370 1399
1371 prev->cctx = 0;
1372
1373 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1400 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1374 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1401 /* without this the next cctx_get might destroy the running cctx while still in use */
1375 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1402 if (expect_false (CCTX_EXPIRED (cctx_current)))
1376 if (!next->cctx) 1403 if (expect_true (!next->cctx))
1377 next->cctx = cctx_get (aTHX); 1404 next->cctx = cctx_get (aTHX);
1378 1405
1379 cctx_put (prev__cctx); 1406 cctx_put (cctx_current);
1380 } 1407 }
1408 else
1409 prev->cctx = cctx_current;
1381 1410
1382 ++next->usecount; 1411 ++next->usecount;
1383 1412
1384 if (expect_true (!next->cctx)) 1413 cctx_prev = cctx_current;
1385 next->cctx = cctx_get (aTHX); 1414 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1386 1415
1387 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1416 next->cctx = 0;
1388 transfer_next = next;
1389 1417
1390 if (expect_false (prev__cctx != next->cctx)) 1418 if (expect_false (cctx_prev != cctx_current))
1391 { 1419 {
1392 prev__cctx->top_env = PL_top_env; 1420 cctx_prev->top_env = PL_top_env;
1393 PL_top_env = next->cctx->top_env; 1421 PL_top_env = cctx_current->top_env;
1394 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1422 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1395 } 1423 }
1396 1424
1397 transfer_tail (aTHX); 1425 transfer_tail (aTHX);
1398 } 1426 }
1399} 1427}
… …
1406static int 1434static int
1407coro_state_destroy (pTHX_ struct coro *coro) 1435coro_state_destroy (pTHX_ struct coro *coro)
1408{ 1436{
1409 if (coro->flags & CF_DESTROYED) 1437 if (coro->flags & CF_DESTROYED)
1410 return 0; 1438 return 0;
1439
1440 if (coro->on_destroy)
1441 coro->on_destroy (aTHX_ coro);
1411 1442
1412 coro->flags |= CF_DESTROYED; 1443 coro->flags |= CF_DESTROYED;
1413 1444
1414 if (coro->flags & CF_READY) 1445 if (coro->flags & CF_READY)
1415 { 1446 {
1416 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1447 /* reduce nready, as destroying a ready coro effectively unreadies it */
1417 /* alternative: look through all ready queues and remove the coro */ 1448 /* alternative: look through all ready queues and remove the coro */
1418 LOCK;
1419 --coro_nready; 1449 --coro_nready;
1420 UNLOCK;
1421 } 1450 }
1422 else 1451 else
1423 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1452 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1424 1453
1425 if (coro->mainstack && coro->mainstack != main_mainstack) 1454 if (coro->mainstack && coro->mainstack != main_mainstack)
1426 { 1455 {
1427 struct coro temp; 1456 struct coro temp;
1428 1457
1429 if (coro->flags & CF_RUNNING) 1458 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1430 croak ("FATAL: tried to destroy currently running coroutine");
1431 1459
1432 save_perl (aTHX_ &temp); 1460 save_perl (aTHX_ &temp);
1433 load_perl (aTHX_ coro); 1461 load_perl (aTHX_ coro);
1434 1462
1435 coro_destruct (aTHX_ coro); 1463 coro_destruct (aTHX_ coro);
… …
1438 1466
1439 coro->slot = 0; 1467 coro->slot = 0;
1440 } 1468 }
1441 1469
1442 cctx_destroy (coro->cctx); 1470 cctx_destroy (coro->cctx);
1471 SvREFCNT_dec (coro->startcv);
1443 SvREFCNT_dec (coro->args); 1472 SvREFCNT_dec (coro->args);
1473 SvREFCNT_dec (CORO_THROW);
1444 1474
1445 if (coro->next) coro->next->prev = coro->prev; 1475 if (coro->next) coro->next->prev = coro->prev;
1446 if (coro->prev) coro->prev->next = coro->next; 1476 if (coro->prev) coro->prev->next = coro->next;
1447 if (coro == coro_first) coro_first = coro->next; 1477 if (coro == coro_first) coro_first = coro->next;
1448 1478
… …
1486# define MGf_DUP 0 1516# define MGf_DUP 0
1487#endif 1517#endif
1488}; 1518};
1489 1519
1490static void 1520static void
1491prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1521prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1492{ 1522{
1493 ta->prev = SvSTATE (prev_sv); 1523 ta->prev = SvSTATE (prev_sv);
1494 ta->next = SvSTATE (next_sv); 1524 ta->next = SvSTATE (next_sv);
1495 TRANSFER_CHECK (*ta); 1525 TRANSFER_CHECK (*ta);
1496} 1526}
1497 1527
1498static void 1528static void
1499api_transfer (SV *prev_sv, SV *next_sv) 1529api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1500{ 1530{
1501 dTHX;
1502 struct transfer_args ta; 1531 struct coro_transfer_args ta;
1503 1532
1504 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1533 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1505 TRANSFER (ta, 1); 1534 TRANSFER (ta, 1);
1506} 1535}
1507 1536
1537/*****************************************************************************/
1538/* gensub: simple closure generation utility */
1539
1540#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1541
1542/* create a closure from XS, returns a code reference */
1543/* the arg can be accessed via GENSUB_ARG from the callback */
1544/* the callback must use dXSARGS/XSRETURN */
1545static SV *
1546gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1547{
1548 CV *cv = (CV *)newSV (0);
1549
1550 sv_upgrade ((SV *)cv, SVt_PVCV);
1551
1552 CvANON_on (cv);
1553 CvISXSUB_on (cv);
1554 CvXSUB (cv) = xsub;
1555 GENSUB_ARG = arg;
1556
1557 return newRV_noinc ((SV *)cv);
1558}
1559
1508/** Coro ********************************************************************/ 1560/** Coro ********************************************************************/
1509 1561
1510static void 1562INLINE void
1511coro_enq (pTHX_ SV *coro_sv) 1563coro_enq (pTHX_ struct coro *coro)
1512{ 1564{
1513 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1565 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1514} 1566}
1515 1567
1516static SV * 1568INLINE SV *
1517coro_deq (pTHX) 1569coro_deq (pTHX)
1518{ 1570{
1519 int prio; 1571 int prio;
1520 1572
1521 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1573 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1524 1576
1525 return 0; 1577 return 0;
1526} 1578}
1527 1579
1528static int 1580static int
1529api_ready (SV *coro_sv) 1581api_ready (pTHX_ SV *coro_sv)
1530{ 1582{
1531 dTHX;
1532 struct coro *coro; 1583 struct coro *coro;
1533 SV *sv_hook; 1584 SV *sv_hook;
1534 void (*xs_hook)(void); 1585 void (*xs_hook)(void);
1535 1586
1536 if (SvROK (coro_sv)) 1587 if (SvROK (coro_sv))
… …
1541 if (coro->flags & CF_READY) 1592 if (coro->flags & CF_READY)
1542 return 0; 1593 return 0;
1543 1594
1544 coro->flags |= CF_READY; 1595 coro->flags |= CF_READY;
1545 1596
1546 LOCK;
1547
1548 sv_hook = coro_nready ? 0 : coro_readyhook; 1597 sv_hook = coro_nready ? 0 : coro_readyhook;
1549 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1598 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1550 1599
1551 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1600 coro_enq (aTHX_ coro);
1552 ++coro_nready; 1601 ++coro_nready;
1553 1602
1554 UNLOCK;
1555
1556 if (sv_hook) 1603 if (sv_hook)
1557 { 1604 {
1558 dSP; 1605 dSP;
1559 1606
1560 ENTER; 1607 ENTER;
1561 SAVETMPS; 1608 SAVETMPS;
1562 1609
1563 PUSHMARK (SP); 1610 PUSHMARK (SP);
1564 PUTBACK; 1611 PUTBACK;
1565 call_sv (sv_hook, G_DISCARD); 1612 call_sv (sv_hook, G_VOID | G_DISCARD);
1566 SPAGAIN;
1567 1613
1568 FREETMPS; 1614 FREETMPS;
1569 LEAVE; 1615 LEAVE;
1570 } 1616 }
1571 1617
… …
1574 1620
1575 return 1; 1621 return 1;
1576} 1622}
1577 1623
1578static int 1624static int
1579api_is_ready (SV *coro_sv) 1625api_is_ready (pTHX_ SV *coro_sv)
1580{ 1626{
1581 dTHX;
1582
1583 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1627 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1584} 1628}
1585 1629
1630/* expects to own a reference to next->hv */
1586INLINE void 1631INLINE void
1632prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1633{
1634 SV *prev_sv = SvRV (coro_current);
1635
1636 ta->prev = SvSTATE_hv (prev_sv);
1637 ta->next = next;
1638
1639 TRANSFER_CHECK (*ta);
1640
1641 SvRV_set (coro_current, (SV *)next->hv);
1642
1643 free_coro_mortal (aTHX);
1644 coro_mortal = prev_sv;
1645}
1646
1647static void
1587prepare_schedule (pTHX_ struct transfer_args *ta) 1648prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1588{ 1649{
1589 SV *prev_sv, *next_sv;
1590
1591 for (;;) 1650 for (;;)
1592 { 1651 {
1593 LOCK;
1594 next_sv = coro_deq (aTHX); 1652 SV *next_sv = coro_deq (aTHX);
1595 1653
1596 /* nothing to schedule: call the idle handler */
1597 if (expect_false (!next_sv)) 1654 if (expect_true (next_sv))
1598 { 1655 {
1656 struct coro *next = SvSTATE_hv (next_sv);
1657
1658 /* cannot transfer to destroyed coros, skip and look for next */
1659 if (expect_false (next->flags & CF_DESTROYED))
1660 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1661 else
1662 {
1663 next->flags &= ~CF_READY;
1664 --coro_nready;
1665
1666 prepare_schedule_to (aTHX_ ta, next);
1667 break;
1668 }
1669 }
1670 else
1671 {
1672 /* nothing to schedule: call the idle handler */
1599 dSP; 1673 dSP;
1600 UNLOCK;
1601 1674
1602 ENTER; 1675 ENTER;
1603 SAVETMPS; 1676 SAVETMPS;
1604 1677
1605 PUSHMARK (SP); 1678 PUSHMARK (SP);
1606 PUTBACK; 1679 PUTBACK;
1607 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1680 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1608 SPAGAIN;
1609 1681
1610 FREETMPS; 1682 FREETMPS;
1611 LEAVE; 1683 LEAVE;
1612 continue;
1613 } 1684 }
1614
1615 ta->next = SvSTATE (next_sv);
1616
1617 /* cannot transfer to destroyed coros, skip and look for next */
1618 if (expect_false (ta->next->flags & CF_DESTROYED))
1619 {
1620 UNLOCK;
1621 SvREFCNT_dec (next_sv);
1622 /* coro_nready has already been taken care of by destroy */
1623 continue;
1624 }
1625
1626 --coro_nready;
1627 UNLOCK;
1628 break;
1629 } 1685 }
1630
1631 /* free this only after the transfer */
1632 prev_sv = SvRV (coro_current);
1633 ta->prev = SvSTATE (prev_sv);
1634 TRANSFER_CHECK (*ta);
1635 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1636 ta->next->flags &= ~CF_READY;
1637 SvRV_set (coro_current, next_sv);
1638
1639 LOCK;
1640 free_coro_mortal (aTHX);
1641 coro_mortal = prev_sv;
1642 UNLOCK;
1643} 1686}
1644 1687
1645INLINE void 1688INLINE void
1646prepare_cede (pTHX_ struct transfer_args *ta) 1689prepare_cede (pTHX_ struct coro_transfer_args *ta)
1647{ 1690{
1648 api_ready (coro_current); 1691 api_ready (aTHX_ coro_current);
1649 prepare_schedule (aTHX_ ta); 1692 prepare_schedule (aTHX_ ta);
1650} 1693}
1651 1694
1695INLINE void
1696prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1697{
1698 SV *prev = SvRV (coro_current);
1699
1700 if (coro_nready)
1701 {
1702 prepare_schedule (aTHX_ ta);
1703 api_ready (aTHX_ prev);
1704 }
1705 else
1706 prepare_nop (aTHX_ ta);
1707}
1708
1709static void
1710api_schedule (pTHX)
1711{
1712 struct coro_transfer_args ta;
1713
1714 prepare_schedule (aTHX_ &ta);
1715 TRANSFER (ta, 1);
1716}
1717
1718static void
1719api_schedule_to (pTHX_ SV *coro_sv)
1720{
1721 struct coro_transfer_args ta;
1722 struct coro *next = SvSTATE (coro_sv);
1723
1724 SvREFCNT_inc_NN (coro_sv);
1725 prepare_schedule_to (aTHX_ &ta, next);
1726}
1727
1652static int 1728static int
1653prepare_cede_notself (pTHX_ struct transfer_args *ta) 1729api_cede (pTHX)
1654{ 1730{
1655 if (coro_nready) 1731 struct coro_transfer_args ta;
1656 { 1732
1657 SV *prev = SvRV (coro_current);
1658 prepare_schedule (aTHX_ ta); 1733 prepare_cede (aTHX_ &ta);
1659 api_ready (prev); 1734
1735 if (expect_true (ta.prev != ta.next))
1736 {
1737 TRANSFER (ta, 1);
1660 return 1; 1738 return 1;
1661 } 1739 }
1662 else 1740 else
1663 return 0; 1741 return 0;
1664} 1742}
1665 1743
1666static void
1667api_schedule (void)
1668{
1669 dTHX;
1670 struct transfer_args ta;
1671
1672 prepare_schedule (aTHX_ &ta);
1673 TRANSFER (ta, 1);
1674}
1675
1676static int 1744static int
1677api_cede (void) 1745api_cede_notself (pTHX)
1678{ 1746{
1679 dTHX; 1747 if (coro_nready)
1748 {
1680 struct transfer_args ta; 1749 struct coro_transfer_args ta;
1681 1750
1682 prepare_cede (aTHX_ &ta); 1751 prepare_cede_notself (aTHX_ &ta);
1683
1684 if (expect_true (ta.prev != ta.next))
1685 {
1686 TRANSFER (ta, 1); 1752 TRANSFER (ta, 1);
1687 return 1; 1753 return 1;
1688 } 1754 }
1689 else 1755 else
1690 return 0; 1756 return 0;
1691} 1757}
1692 1758
1693static int 1759static void
1694api_cede_notself (void)
1695{
1696 dTHX;
1697 struct transfer_args ta;
1698
1699 if (prepare_cede_notself (aTHX_ &ta))
1700 {
1701 TRANSFER (ta, 1);
1702 return 1;
1703 }
1704 else
1705 return 0;
1706}
1707
1708static void
1709api_trace (SV *coro_sv, int flags) 1760api_trace (pTHX_ SV *coro_sv, int flags)
1710{ 1761{
1711 dTHX;
1712 struct coro *coro = SvSTATE (coro_sv); 1762 struct coro *coro = SvSTATE (coro_sv);
1763
1764 if (coro->flags & CF_RUNNING)
1765 croak ("cannot enable tracing on a running coroutine, caught");
1713 1766
1714 if (flags & CC_TRACE) 1767 if (flags & CC_TRACE)
1715 { 1768 {
1716 if (!coro->cctx) 1769 if (!coro->cctx)
1717 coro->cctx = cctx_new_run (); 1770 coro->cctx = cctx_new_run ();
1718 else if (!(coro->cctx->flags & CC_TRACE)) 1771 else if (!(coro->cctx->flags & CC_TRACE))
1719 croak ("cannot enable tracing on coroutine with custom stack"); 1772 croak ("cannot enable tracing on coroutine with custom stack, caught");
1720 1773
1721 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1774 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1722 } 1775 }
1723 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1776 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1724 { 1777 {
… …
1729 else 1782 else
1730 coro->slot->runops = RUNOPS_DEFAULT; 1783 coro->slot->runops = RUNOPS_DEFAULT;
1731 } 1784 }
1732} 1785}
1733 1786
1734#if 0 1787static void
1788coro_call_on_destroy (pTHX_ struct coro *coro)
1789{
1790 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1791 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1792
1793 if (on_destroyp)
1794 {
1795 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1796
1797 while (AvFILLp (on_destroy) >= 0)
1798 {
1799 dSP; /* don't disturb outer sp */
1800 SV *cb = av_pop (on_destroy);
1801
1802 PUSHMARK (SP);
1803
1804 if (statusp)
1805 {
1806 int i;
1807 AV *status = (AV *)SvRV (*statusp);
1808 EXTEND (SP, AvFILLp (status) + 1);
1809
1810 for (i = 0; i <= AvFILLp (status); ++i)
1811 PUSHs (AvARRAY (status)[i]);
1812 }
1813
1814 PUTBACK;
1815 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1816 }
1817 }
1818}
1819
1820static void
1821slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1822{
1823 int i;
1824 HV *hv = (HV *)SvRV (coro_current);
1825 AV *av = newAV ();
1826
1827 av_extend (av, items - 1);
1828 for (i = 0; i < items; ++i)
1829 av_push (av, SvREFCNT_inc_NN (arg [i]));
1830
1831 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1832
1833 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1834 api_ready (aTHX_ sv_manager);
1835
1836 frame->prepare = prepare_schedule;
1837 frame->check = slf_check_repeat;
1838}
1839
1840/*****************************************************************************/
1841/* async pool handler */
1842
1735static int 1843static int
1736coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1844slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1737{ 1845{
1738 AV *padlist; 1846 HV *hv = (HV *)SvRV (coro_current);
1739 AV *av = (AV *)mg->mg_obj; 1847 struct coro *coro = (struct coro *)frame->data;
1740 1848
1741 abort (); 1849 if (!coro->invoke_cb)
1850 return 1; /* loop till we have invoke */
1851 else
1852 {
1853 hv_store (hv, "desc", sizeof ("desc") - 1,
1854 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1855
1856 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1857
1858 {
1859 dSP;
1860 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1861 PUTBACK;
1862 }
1863
1864 SvREFCNT_dec (GvAV (PL_defgv));
1865 GvAV (PL_defgv) = coro->invoke_av;
1866 coro->invoke_av = 0;
1867
1868 return 0;
1869 }
1870}
1871
1872static void
1873slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1874{
1875 HV *hv = (HV *)SvRV (coro_current);
1876 struct coro *coro = SvSTATE_hv ((SV *)hv);
1877
1878 if (expect_true (coro->saved_deffh))
1879 {
1880 /* subsequent iteration */
1881 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1882 coro->saved_deffh = 0;
1883
1884 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1885 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1886 {
1887 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1888 coro->invoke_av = newAV ();
1889
1890 frame->prepare = prepare_nop;
1891 }
1892 else
1893 {
1894 av_clear (GvAV (PL_defgv));
1895 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1896
1897 coro->prio = 0;
1898
1899 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1900 api_trace (aTHX_ coro_current, 0);
1901
1902 frame->prepare = prepare_schedule;
1903 av_push (av_async_pool, SvREFCNT_inc (hv));
1904 }
1905 }
1906 else
1907 {
1908 /* first iteration, simply fall through */
1909 frame->prepare = prepare_nop;
1910 }
1911
1912 frame->check = slf_check_pool_handler;
1913 frame->data = (void *)coro;
1914}
1915
1916/*****************************************************************************/
1917/* rouse callback */
1918
1919#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1920
1921static void
1922coro_rouse_callback (pTHX_ CV *cv)
1923{
1924 dXSARGS;
1925 SV *data = (SV *)GENSUB_ARG;
1926
1927 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1928 {
1929 /* first call, set args */
1930 AV *av = newAV ();
1931 SV *coro = SvRV (data);
1932
1933 SvRV_set (data, (SV *)av);
1934 api_ready (aTHX_ coro);
1935 SvREFCNT_dec (coro);
1936
1937 /* better take a full copy of the arguments */
1938 while (items--)
1939 av_store (av, items, newSVsv (ST (items)));
1940 }
1941
1942 XSRETURN_EMPTY;
1943}
1944
1945static int
1946slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1947{
1948 SV *data = (SV *)frame->data;
1949
1950 if (CORO_THROW)
1951 return 0;
1952
1953 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1954 return 1;
1955
1956 /* now push all results on the stack */
1957 {
1958 dSP;
1959 AV *av = (AV *)SvRV (data);
1960 int i;
1961
1962 EXTEND (SP, AvFILLp (av) + 1);
1963 for (i = 0; i <= AvFILLp (av); ++i)
1964 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1965
1966 /* we have stolen the elements, so ste length to zero and free */
1967 AvFILLp (av) = -1;
1968 av_undef (av);
1969
1970 PUTBACK;
1971 }
1742 1972
1743 return 0; 1973 return 0;
1744} 1974}
1745 1975
1746static MGVTBL coro_gensub_vtbl = { 1976static void
1747 0, 0, 0, 0, 1977slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1748 coro_gensub_free 1978{
1749}; 1979 SV *cb;
1750#endif 1980
1981 if (items)
1982 cb = arg [0];
1983 else
1984 {
1985 struct coro *coro = SvSTATE_current;
1986
1987 if (!coro->rouse_cb)
1988 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1989
1990 cb = sv_2mortal (coro->rouse_cb);
1991 coro->rouse_cb = 0;
1992 }
1993
1994 if (!SvROK (cb)
1995 || SvTYPE (SvRV (cb)) != SVt_PVCV
1996 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1997 croak ("Coro::rouse_wait called with illegal callback argument,");
1998
1999 {
2000 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2001 SV *data = (SV *)GENSUB_ARG;
2002
2003 frame->data = (void *)data;
2004 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2005 frame->check = slf_check_rouse_wait;
2006 }
2007}
2008
2009static SV *
2010coro_new_rouse_cb (pTHX)
2011{
2012 HV *hv = (HV *)SvRV (coro_current);
2013 struct coro *coro = SvSTATE_hv (hv);
2014 SV *data = newRV_inc ((SV *)hv);
2015 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2016
2017 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2018 SvREFCNT_dec (data); /* magicext increases the refcount */
2019
2020 SvREFCNT_dec (coro->rouse_cb);
2021 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2022
2023 return cb;
2024}
2025
2026/*****************************************************************************/
2027/* schedule-like-function opcode (SLF) */
2028
2029static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2030static const CV *slf_cv;
2031static SV **slf_argv;
2032static int slf_argc, slf_arga; /* count, allocated */
2033static I32 slf_ax; /* top of stack, for restore */
2034
2035/* this restores the stack in the case we patched the entersub, to */
2036/* recreate the stack frame as perl will on following calls */
2037/* since entersub cleared the stack */
2038static OP *
2039pp_restore (pTHX)
2040{
2041 int i;
2042 SV **SP = PL_stack_base + slf_ax;
2043
2044 PUSHMARK (SP);
2045
2046 EXTEND (SP, slf_argc + 1);
2047
2048 for (i = 0; i < slf_argc; ++i)
2049 PUSHs (sv_2mortal (slf_argv [i]));
2050
2051 PUSHs ((SV *)CvGV (slf_cv));
2052
2053 RETURNOP (slf_restore.op_first);
2054}
2055
2056static void
2057slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2058{
2059 SV **arg = (SV **)slf_frame.data;
2060
2061 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2062}
2063
2064static void
2065slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2066{
2067 if (items != 2)
2068 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2069
2070 frame->prepare = slf_prepare_transfer;
2071 frame->check = slf_check_nop;
2072 frame->data = (void *)arg; /* let's hope it will stay valid */
2073}
2074
2075static void
2076slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2077{
2078 frame->prepare = prepare_schedule;
2079 frame->check = slf_check_nop;
2080}
2081
2082static void
2083slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2084{
2085 struct coro *next = (struct coro *)slf_frame.data;
2086
2087 SvREFCNT_inc_NN (next->hv);
2088 prepare_schedule_to (aTHX_ ta, next);
2089}
2090
2091static void
2092slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2093{
2094 if (!items)
2095 croak ("Coro::schedule_to expects a coroutine argument, caught");
2096
2097 frame->data = (void *)SvSTATE (arg [0]);
2098 frame->prepare = slf_prepare_schedule_to;
2099 frame->check = slf_check_nop;
2100}
2101
2102static void
2103slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2104{
2105 api_ready (aTHX_ SvRV (coro_current));
2106
2107 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2108}
2109
2110static void
2111slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2112{
2113 frame->prepare = prepare_cede;
2114 frame->check = slf_check_nop;
2115}
2116
2117static void
2118slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2119{
2120 frame->prepare = prepare_cede_notself;
2121 frame->check = slf_check_nop;
2122}
2123
2124/*
2125 * these not obviously related functions are all rolled into one
2126 * function to increase chances that they all will call transfer with the same
2127 * stack offset
2128 * SLF stands for "schedule-like-function".
2129 */
2130static OP *
2131pp_slf (pTHX)
2132{
2133 I32 checkmark; /* mark SP to see how many elements check has pushed */
2134
2135 /* set up the slf frame, unless it has already been set-up */
2136 /* the latter happens when a new coro has been started */
2137 /* or when a new cctx was attached to an existing coroutine */
2138 if (expect_true (!slf_frame.prepare))
2139 {
2140 /* first iteration */
2141 dSP;
2142 SV **arg = PL_stack_base + TOPMARK + 1;
2143 int items = SP - arg; /* args without function object */
2144 SV *gv = *sp;
2145
2146 /* do a quick consistency check on the "function" object, and if it isn't */
2147 /* for us, divert to the real entersub */
2148 if (SvTYPE (gv) != SVt_PVGV
2149 || !GvCV (gv)
2150 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2151 return PL_ppaddr[OP_ENTERSUB](aTHX);
2152
2153 if (!(PL_op->op_flags & OPf_STACKED))
2154 {
2155 /* ampersand-form of call, use @_ instead of stack */
2156 AV *av = GvAV (PL_defgv);
2157 arg = AvARRAY (av);
2158 items = AvFILLp (av) + 1;
2159 }
2160
2161 /* now call the init function, which needs to set up slf_frame */
2162 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2163 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2164
2165 /* pop args */
2166 SP = PL_stack_base + POPMARK;
2167
2168 PUTBACK;
2169 }
2170
2171 /* now that we have a slf_frame, interpret it! */
2172 /* we use a callback system not to make the code needlessly */
2173 /* complicated, but so we can run multiple perl coros from one cctx */
2174
2175 do
2176 {
2177 struct coro_transfer_args ta;
2178
2179 slf_frame.prepare (aTHX_ &ta);
2180 TRANSFER (ta, 0);
2181
2182 checkmark = PL_stack_sp - PL_stack_base;
2183 }
2184 while (slf_frame.check (aTHX_ &slf_frame));
2185
2186 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2187
2188 /* exception handling */
2189 if (expect_false (CORO_THROW))
2190 {
2191 SV *exception = sv_2mortal (CORO_THROW);
2192
2193 CORO_THROW = 0;
2194 sv_setsv (ERRSV, exception);
2195 croak (0);
2196 }
2197
2198 /* return value handling - mostly like entersub */
2199 /* make sure we put something on the stack in scalar context */
2200 if (GIMME_V == G_SCALAR)
2201 {
2202 dSP;
2203 SV **bot = PL_stack_base + checkmark;
2204
2205 if (sp == bot) /* too few, push undef */
2206 bot [1] = &PL_sv_undef;
2207 else if (sp != bot + 1) /* too many, take last one */
2208 bot [1] = *sp;
2209
2210 SP = bot + 1;
2211
2212 PUTBACK;
2213 }
2214
2215 return NORMAL;
2216}
2217
2218static void
2219api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2220{
2221 int i;
2222 SV **arg = PL_stack_base + ax;
2223 int items = PL_stack_sp - arg + 1;
2224
2225 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2226
2227 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2228 && PL_op->op_ppaddr != pp_slf)
2229 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2230
2231 CvFLAGS (cv) |= CVf_SLF;
2232 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2233 slf_cv = cv;
2234
2235 /* we patch the op, and then re-run the whole call */
2236 /* we have to put the same argument on the stack for this to work */
2237 /* and this will be done by pp_restore */
2238 slf_restore.op_next = (OP *)&slf_restore;
2239 slf_restore.op_type = OP_CUSTOM;
2240 slf_restore.op_ppaddr = pp_restore;
2241 slf_restore.op_first = PL_op;
2242
2243 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2244
2245 if (PL_op->op_flags & OPf_STACKED)
2246 {
2247 if (items > slf_arga)
2248 {
2249 slf_arga = items;
2250 free (slf_argv);
2251 slf_argv = malloc (slf_arga * sizeof (SV *));
2252 }
2253
2254 slf_argc = items;
2255
2256 for (i = 0; i < items; ++i)
2257 slf_argv [i] = SvREFCNT_inc (arg [i]);
2258 }
2259 else
2260 slf_argc = 0;
2261
2262 PL_op->op_ppaddr = pp_slf;
2263 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2264
2265 PL_op = (OP *)&slf_restore;
2266}
1751 2267
1752/*****************************************************************************/ 2268/*****************************************************************************/
1753/* PerlIO::cede */ 2269/* PerlIO::cede */
1754 2270
1755typedef struct 2271typedef struct
… …
1783 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2299 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1784 double now = nvtime (); 2300 double now = nvtime ();
1785 2301
1786 if (now >= self->next) 2302 if (now >= self->next)
1787 { 2303 {
1788 api_cede (); 2304 api_cede (aTHX);
1789 self->next = now + self->every; 2305 self->next = now + self->every;
1790 } 2306 }
1791 2307
1792 return PerlIOBuf_flush (aTHX_ f); 2308 return PerlIOBuf_flush (aTHX_ f);
1793} 2309}
… …
1823 PerlIOBuf_get_cnt, 2339 PerlIOBuf_get_cnt,
1824 PerlIOBuf_set_ptrcnt, 2340 PerlIOBuf_set_ptrcnt,
1825}; 2341};
1826 2342
1827/*****************************************************************************/ 2343/*****************************************************************************/
2344/* Coro::Semaphore & Coro::Signal */
1828 2345
1829static const CV *ssl_cv; /* for quick consistency check */
1830
1831static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1832static SV *ssl_arg0;
1833static SV *ssl_arg1;
1834
1835/* this restores the stack in the case we patched the entersub, to */
1836/* recreate the stack frame as perl will on following calls */
1837/* since entersub cleared the stack */
1838static OP * 2346static SV *
1839pp_restore (pTHX) 2347coro_waitarray_new (pTHX_ int count)
1840{ 2348{
2349 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2350 AV *av = newAV ();
2351 SV **ary;
2352
2353 /* unfortunately, building manually saves memory */
2354 Newx (ary, 2, SV *);
2355 AvALLOC (av) = ary;
2356 /*AvARRAY (av) = ary;*/
2357 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2358 AvMAX (av) = 1;
2359 AvFILLp (av) = 0;
2360 ary [0] = newSViv (count);
2361
2362 return newRV_noinc ((SV *)av);
2363}
2364
2365/* semaphore */
2366
2367static void
2368coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2369{
2370 SV *count_sv = AvARRAY (av)[0];
2371 IV count = SvIVX (count_sv);
2372
2373 count += adjust;
2374 SvIVX (count_sv) = count;
2375
2376 /* now wake up as many waiters as are expected to lock */
2377 while (count > 0 && AvFILLp (av) > 0)
2378 {
2379 SV *cb;
2380
2381 /* swap first two elements so we can shift a waiter */
2382 AvARRAY (av)[0] = AvARRAY (av)[1];
2383 AvARRAY (av)[1] = count_sv;
2384 cb = av_shift (av);
2385
2386 if (SvOBJECT (cb))
2387 {
2388 api_ready (aTHX_ cb);
2389 --count;
2390 }
2391 else if (SvTYPE (cb) == SVt_PVCV)
2392 {
2393 dSP;
2394 PUSHMARK (SP);
2395 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2396 PUTBACK;
2397 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2398 }
2399
2400 SvREFCNT_dec (cb);
2401 }
2402}
2403
2404static void
2405coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2406{
2407 /* call $sem->adjust (0) to possibly wake up some other waiters */
2408 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2409}
2410
2411static int
2412slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2413{
2414 AV *av = (AV *)frame->data;
2415 SV *count_sv = AvARRAY (av)[0];
2416
2417 /* if we are about to throw, don't actually acquire the lock, just throw */
2418 if (CORO_THROW)
2419 return 0;
2420 else if (SvIVX (count_sv) > 0)
2421 {
2422 SvSTATE_current->on_destroy = 0;
2423
2424 if (acquire)
2425 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2426 else
2427 coro_semaphore_adjust (aTHX_ av, 0);
2428
2429 return 0;
2430 }
2431 else
2432 {
2433 int i;
2434 /* if we were woken up but can't down, we look through the whole */
2435 /* waiters list and only add us if we aren't in there already */
2436 /* this avoids some degenerate memory usage cases */
2437
2438 for (i = 1; i <= AvFILLp (av); ++i)
2439 if (AvARRAY (av)[i] == SvRV (coro_current))
2440 return 1;
2441
2442 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2443 return 1;
2444 }
2445}
2446
2447static int
2448slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2449{
2450 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2451}
2452
2453static int
2454slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2455{
2456 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2457}
2458
2459static void
2460slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2461{
2462 AV *av = (AV *)SvRV (arg [0]);
2463
2464 if (SvIVX (AvARRAY (av)[0]) > 0)
2465 {
2466 frame->data = (void *)av;
2467 frame->prepare = prepare_nop;
2468 }
2469 else
2470 {
2471 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2472
2473 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2474 frame->prepare = prepare_schedule;
2475
2476 /* to avoid race conditions when a woken-up coro gets terminated */
2477 /* we arrange for a temporary on_destroy that calls adjust (0) */
2478 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2479 }
2480}
2481
2482static void
2483slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2484{
2485 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2486 frame->check = slf_check_semaphore_down;
2487}
2488
2489static void
2490slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2491{
2492 if (items >= 2)
2493 {
2494 /* callback form */
2495 AV *av = (AV *)SvRV (arg [0]);
2496 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2497
2498 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2499
2500 if (SvIVX (AvARRAY (av)[0]) > 0)
2501 coro_semaphore_adjust (aTHX_ av, 0);
2502
2503 frame->prepare = prepare_nop;
2504 frame->check = slf_check_nop;
2505 }
2506 else
2507 {
2508 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2509 frame->check = slf_check_semaphore_wait;
2510 }
2511}
2512
2513/* signal */
2514
2515static void
2516coro_signal_wake (pTHX_ AV *av, int count)
2517{
2518 SvIVX (AvARRAY (av)[0]) = 0;
2519
2520 /* now signal count waiters */
2521 while (count > 0 && AvFILLp (av) > 0)
2522 {
2523 SV *cb;
2524
2525 /* swap first two elements so we can shift a waiter */
2526 cb = AvARRAY (av)[0];
2527 AvARRAY (av)[0] = AvARRAY (av)[1];
2528 AvARRAY (av)[1] = cb;
2529
2530 cb = av_shift (av);
2531
2532 api_ready (aTHX_ cb);
2533 sv_setiv (cb, 0); /* signal waiter */
2534 SvREFCNT_dec (cb);
2535
2536 --count;
2537 }
2538}
2539
2540static int
2541slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2542{
2543 /* if we are about to throw, also stop waiting */
2544 return SvROK ((SV *)frame->data) && !CORO_THROW;
2545}
2546
2547static void
2548slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2549{
2550 AV *av = (AV *)SvRV (arg [0]);
2551
2552 if (SvIVX (AvARRAY (av)[0]))
2553 {
2554 SvIVX (AvARRAY (av)[0]) = 0;
2555 frame->prepare = prepare_nop;
2556 frame->check = slf_check_nop;
2557 }
2558 else
2559 {
2560 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2561
2562 av_push (av, waiter);
2563
2564 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2565 frame->prepare = prepare_schedule;
2566 frame->check = slf_check_signal_wait;
2567 }
2568}
2569
2570/*****************************************************************************/
2571/* Coro::AIO */
2572
2573#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2574
2575/* helper storage struct */
2576struct io_state
2577{
2578 int errorno;
2579 I32 laststype; /* U16 in 5.10.0 */
2580 int laststatval;
2581 Stat_t statcache;
2582};
2583
2584static void
2585coro_aio_callback (pTHX_ CV *cv)
2586{
2587 dXSARGS;
2588 AV *state = (AV *)GENSUB_ARG;
2589 SV *coro = av_pop (state);
2590 SV *data_sv = newSV (sizeof (struct io_state));
2591
2592 av_extend (state, items - 1);
2593
2594 sv_upgrade (data_sv, SVt_PV);
2595 SvCUR_set (data_sv, sizeof (struct io_state));
2596 SvPOK_only (data_sv);
2597
2598 {
2599 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2600
2601 data->errorno = errno;
2602 data->laststype = PL_laststype;
2603 data->laststatval = PL_laststatval;
2604 data->statcache = PL_statcache;
2605 }
2606
2607 /* now build the result vector out of all the parameters and the data_sv */
2608 {
2609 int i;
2610
2611 for (i = 0; i < items; ++i)
2612 av_push (state, SvREFCNT_inc_NN (ST (i)));
2613 }
2614
2615 av_push (state, data_sv);
2616
2617 api_ready (aTHX_ coro);
2618 SvREFCNT_dec (coro);
2619 SvREFCNT_dec ((AV *)state);
2620}
2621
2622static int
2623slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2624{
2625 AV *state = (AV *)frame->data;
2626
2627 /* if we are about to throw, return early */
2628 /* this does not cancel the aio request, but at least */
2629 /* it quickly returns */
2630 if (CORO_THROW)
2631 return 0;
2632
2633 /* one element that is an RV? repeat! */
2634 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2635 return 1;
2636
2637 /* restore status */
2638 {
2639 SV *data_sv = av_pop (state);
2640 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2641
2642 errno = data->errorno;
2643 PL_laststype = data->laststype;
2644 PL_laststatval = data->laststatval;
2645 PL_statcache = data->statcache;
2646
2647 SvREFCNT_dec (data_sv);
2648 }
2649
2650 /* push result values */
2651 {
1841 dSP; 2652 dSP;
2653 int i;
1842 2654
2655 EXTEND (SP, AvFILLp (state) + 1);
2656 for (i = 0; i <= AvFILLp (state); ++i)
2657 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2658
2659 PUTBACK;
2660 }
2661
2662 return 0;
2663}
2664
2665static void
2666slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2667{
2668 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2669 SV *coro_hv = SvRV (coro_current);
2670 struct coro *coro = SvSTATE_hv (coro_hv);
2671
2672 /* put our coroutine id on the state arg */
2673 av_push (state, SvREFCNT_inc_NN (coro_hv));
2674
2675 /* first see whether we have a non-zero priority and set it as AIO prio */
2676 if (coro->prio)
2677 {
2678 dSP;
2679
2680 static SV *prio_cv;
2681 static SV *prio_sv;
2682
2683 if (expect_false (!prio_cv))
2684 {
2685 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2686 prio_sv = newSViv (0);
2687 }
2688
2689 PUSHMARK (SP);
2690 sv_setiv (prio_sv, coro->prio);
2691 XPUSHs (prio_sv);
2692
2693 PUTBACK;
2694 call_sv (prio_cv, G_VOID | G_DISCARD);
2695 }
2696
2697 /* now call the original request */
2698 {
2699 dSP;
2700 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2701 int i;
2702
1843 PUSHMARK (SP); 2703 PUSHMARK (SP);
1844 2704
1845 EXTEND (SP, 3); 2705 /* first push all args to the stack */
1846 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2706 EXTEND (SP, items + 1);
1847 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1848 PUSHs ((SV *)CvGV (ssl_cv));
1849 2707
1850 RETURNOP (ssl_restore.op_first); 2708 for (i = 0; i < items; ++i)
1851} 2709 PUSHs (arg [i]);
1852 2710
1853/* declare prototype */ 2711 /* now push the callback closure */
1854XS(XS_Coro__State__set_stacklevel); 2712 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1855 2713
1856static OP * 2714 /* now call the AIO function - we assume our request is uncancelable */
1857pp_set_stacklevel (pTHX)
1858{
1859 dSP;
1860 struct transfer_args ta;
1861 SV **arg = PL_stack_base + TOPMARK + 1;
1862 int items = SP - arg; /* args without function object */
1863
1864 /* do a quick consistency check on the "function" object, and if it isn't */
1865 /* for us, divert to the real entersub */
1866 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1867 return PL_ppaddr[OP_ENTERSUB](aTHX);
1868
1869 /* pop args */
1870 SP = PL_stack_base + POPMARK;
1871
1872 if (!(PL_op->op_flags & OPf_STACKED))
1873 {
1874 /* ampersand-form of call, use @_ instead of stack */
1875 AV *av = GvAV (PL_defgv);
1876 arg = AvARRAY (av);
1877 items = AvFILLp (av) + 1;
1878 }
1879
1880 PUTBACK; 2715 PUTBACK;
1881 switch (PL_op->op_private & 7) 2716 call_sv ((SV *)req, G_VOID | G_DISCARD);
1882 {
1883 case 0:
1884 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1885 break;
1886
1887 case 1:
1888 if (items != 2)
1889 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1890
1891 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1892 break;
1893
1894 case 2:
1895 prepare_schedule (aTHX_ &ta);
1896 break;
1897
1898 case 3:
1899 prepare_cede (aTHX_ &ta);
1900 break;
1901
1902 case 4:
1903 if (!prepare_cede_notself (aTHX_ &ta))
1904 goto skip;
1905
1906 break;
1907 } 2717 }
1908 2718
1909 TRANSFER (ta, 0); 2719 /* now that the requets is going, we loop toll we have a result */
1910 SPAGAIN; 2720 frame->data = (void *)state;
1911 2721 frame->prepare = prepare_schedule;
1912skip: 2722 frame->check = slf_check_aio_req;
1913 PUTBACK;
1914 SSL_TAIL;
1915 SPAGAIN;
1916 RETURN;
1917} 2723}
2724
2725static void
2726coro_aio_req_xs (pTHX_ CV *cv)
2727{
2728 dXSARGS;
2729
2730 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2731
2732 XSRETURN_EMPTY;
2733}
2734
2735/*****************************************************************************/
2736
2737#if CORO_CLONE
2738# include "clone.c"
2739#endif
1918 2740
1919MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2741MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1920 2742
1921PROTOTYPES: DISABLE 2743PROTOTYPES: DISABLE
1922 2744
1923# these not obviously related functions are all rolled into the same xs
1924# function to increase chances that they all will call transfer with the same
1925# stack offset
1926void
1927_set_stacklevel (...)
1928 ALIAS:
1929 Coro::State::transfer = 1
1930 Coro::schedule = 2
1931 Coro::cede = 3
1932 Coro::cede_notself = 4
1933 CODE:
1934{
1935 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1936
1937 /* we patch the op, and then re-run the whole call */
1938 /* we have to put some dummy argument on the stack for this to work */
1939 /* TODO: walk back the opcode chain (but how?), nuke the pp_gv etc. */
1940 ssl_restore.op_next = (OP *)&ssl_restore;
1941 ssl_restore.op_type = OP_NULL;
1942 ssl_restore.op_ppaddr = pp_restore;
1943 ssl_restore.op_first = PL_op;
1944
1945 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1946 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1947
1948 PL_op->op_ppaddr = pp_set_stacklevel;
1949 PL_op->op_private = PL_op->op_private & ~7 | ix; /* we potentially share our private flags with entersub */
1950
1951 PL_op = (OP *)&ssl_restore;
1952}
1953
1954BOOT: 2745BOOT:
1955{ 2746{
1956#ifdef USE_ITHREADS 2747#ifdef USE_ITHREADS
1957 MUTEX_INIT (&coro_lock);
1958# if CORO_PTHREAD 2748# if CORO_PTHREAD
1959 coro_thx = PERL_GET_CONTEXT; 2749 coro_thx = PERL_GET_CONTEXT;
1960# endif 2750# endif
1961#endif 2751#endif
1962 BOOT_PAGESIZE; 2752 BOOT_PAGESIZE;
1963 2753
1964 ssl_cv = get_cv ("Coro::State::_set_stacklevel", 0); 2754 cctx_current = cctx_new_empty ();
1965 2755
1966 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2756 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1967 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2757 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1968 2758
1969 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2759 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1985 main_top_env = PL_top_env; 2775 main_top_env = PL_top_env;
1986 2776
1987 while (main_top_env->je_prev) 2777 while (main_top_env->je_prev)
1988 main_top_env = main_top_env->je_prev; 2778 main_top_env = main_top_env->je_prev;
1989 2779
2780 {
2781 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2782
2783 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2784 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2785
2786 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2787 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2788 }
2789
1990 coroapi.ver = CORO_API_VERSION; 2790 coroapi.ver = CORO_API_VERSION;
1991 coroapi.rev = CORO_API_REVISION; 2791 coroapi.rev = CORO_API_REVISION;
2792
1992 coroapi.transfer = api_transfer; 2793 coroapi.transfer = api_transfer;
2794
2795 coroapi.sv_state = SvSTATE_;
2796 coroapi.execute_slf = api_execute_slf;
2797 coroapi.prepare_nop = prepare_nop;
2798 coroapi.prepare_schedule = prepare_schedule;
2799 coroapi.prepare_cede = prepare_cede;
2800 coroapi.prepare_cede_notself = prepare_cede_notself;
1993 2801
1994 { 2802 {
1995 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2803 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1996 2804
1997 if (!svp) croak ("Time::HiRes is required"); 2805 if (!svp) croak ("Time::HiRes is required");
… …
2003 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2811 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2004} 2812}
2005 2813
2006SV * 2814SV *
2007new (char *klass, ...) 2815new (char *klass, ...)
2816 ALIAS:
2817 Coro::new = 1
2008 CODE: 2818 CODE:
2009{ 2819{
2010 struct coro *coro; 2820 struct coro *coro;
2011 MAGIC *mg; 2821 MAGIC *mg;
2012 HV *hv; 2822 HV *hv;
2823 CV *cb;
2013 int i; 2824 int i;
2825
2826 if (items > 1)
2827 {
2828 cb = coro_sv_2cv (aTHX_ ST (1));
2829
2830 if (!ix)
2831 {
2832 if (CvISXSUB (cb))
2833 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2834
2835 if (!CvROOT (cb))
2836 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2837 }
2838 }
2014 2839
2015 Newz (0, coro, 1, struct coro); 2840 Newz (0, coro, 1, struct coro);
2016 coro->args = newAV (); 2841 coro->args = newAV ();
2017 coro->flags = CF_NEW; 2842 coro->flags = CF_NEW;
2018 2843
… …
2023 coro->hv = hv = newHV (); 2848 coro->hv = hv = newHV ();
2024 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2849 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2025 mg->mg_flags |= MGf_DUP; 2850 mg->mg_flags |= MGf_DUP;
2026 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2851 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2027 2852
2853 if (items > 1)
2854 {
2028 av_extend (coro->args, items - 1); 2855 av_extend (coro->args, items - 1 + ix - 1);
2856
2857 if (ix)
2858 {
2859 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2860 cb = cv_coro_run;
2861 }
2862
2863 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2864
2029 for (i = 1; i < items; i++) 2865 for (i = 2; i < items; i++)
2030 av_push (coro->args, newSVsv (ST (i))); 2866 av_push (coro->args, newSVsv (ST (i)));
2867 }
2031} 2868}
2032 OUTPUT: 2869 OUTPUT:
2033 RETVAL 2870 RETVAL
2871
2872void
2873transfer (...)
2874 PROTOTYPE: $$
2875 CODE:
2876 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2034 2877
2035bool 2878bool
2036_destroy (SV *coro_sv) 2879_destroy (SV *coro_sv)
2037 CODE: 2880 CODE:
2038 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2881 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2043_exit (int code) 2886_exit (int code)
2044 PROTOTYPE: $ 2887 PROTOTYPE: $
2045 CODE: 2888 CODE:
2046 _exit (code); 2889 _exit (code);
2047 2890
2891SV *
2892clone (Coro::State coro)
2893 CODE:
2894{
2895#if CORO_CLONE
2896 struct coro *ncoro = coro_clone (coro);
2897 MAGIC *mg;
2898 /* TODO: too much duplication */
2899 ncoro->hv = newHV ();
2900 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2901 mg->mg_flags |= MGf_DUP;
2902 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2903#else
2904 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2905#endif
2906}
2907 OUTPUT:
2908 RETVAL
2909
2048int 2910int
2049cctx_stacksize (int new_stacksize = 0) 2911cctx_stacksize (int new_stacksize = 0)
2912 PROTOTYPE: ;$
2050 CODE: 2913 CODE:
2051 RETVAL = cctx_stacksize; 2914 RETVAL = cctx_stacksize;
2052 if (new_stacksize) 2915 if (new_stacksize)
2053 { 2916 {
2054 cctx_stacksize = new_stacksize; 2917 cctx_stacksize = new_stacksize;
… …
2057 OUTPUT: 2920 OUTPUT:
2058 RETVAL 2921 RETVAL
2059 2922
2060int 2923int
2061cctx_max_idle (int max_idle = 0) 2924cctx_max_idle (int max_idle = 0)
2925 PROTOTYPE: ;$
2062 CODE: 2926 CODE:
2063 RETVAL = cctx_max_idle; 2927 RETVAL = cctx_max_idle;
2064 if (max_idle > 1) 2928 if (max_idle > 1)
2065 cctx_max_idle = max_idle; 2929 cctx_max_idle = max_idle;
2066 OUTPUT: 2930 OUTPUT:
2067 RETVAL 2931 RETVAL
2068 2932
2069int 2933int
2070cctx_count () 2934cctx_count ()
2935 PROTOTYPE:
2071 CODE: 2936 CODE:
2072 RETVAL = cctx_count; 2937 RETVAL = cctx_count;
2073 OUTPUT: 2938 OUTPUT:
2074 RETVAL 2939 RETVAL
2075 2940
2076int 2941int
2077cctx_idle () 2942cctx_idle ()
2943 PROTOTYPE:
2078 CODE: 2944 CODE:
2079 RETVAL = cctx_idle; 2945 RETVAL = cctx_idle;
2080 OUTPUT: 2946 OUTPUT:
2081 RETVAL 2947 RETVAL
2082 2948
2083void 2949void
2084list () 2950list ()
2951 PROTOTYPE:
2085 PPCODE: 2952 PPCODE:
2086{ 2953{
2087 struct coro *coro; 2954 struct coro *coro;
2088 for (coro = coro_first; coro; coro = coro->next) 2955 for (coro = coro_first; coro; coro = coro->next)
2089 if (coro->hv) 2956 if (coro->hv)
… …
2151 3018
2152void 3019void
2153throw (Coro::State self, SV *throw = &PL_sv_undef) 3020throw (Coro::State self, SV *throw = &PL_sv_undef)
2154 PROTOTYPE: $;$ 3021 PROTOTYPE: $;$
2155 CODE: 3022 CODE:
3023{
3024 struct coro *current = SvSTATE_current;
3025 SV **throwp = self == current ? &CORO_THROW : &self->except;
2156 SvREFCNT_dec (self->throw); 3026 SvREFCNT_dec (*throwp);
2157 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3027 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3028}
2158 3029
2159void 3030void
2160api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3031api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3032 PROTOTYPE: $;$
3033 C_ARGS: aTHX_ coro, flags
2161 3034
2162SV * 3035SV *
2163has_cctx (Coro::State coro) 3036has_cctx (Coro::State coro)
2164 PROTOTYPE: $ 3037 PROTOTYPE: $
2165 CODE: 3038 CODE:
2166 RETVAL = boolSV (!!coro->cctx); 3039 /* maybe manage the running flag differently */
3040 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2167 OUTPUT: 3041 OUTPUT:
2168 RETVAL 3042 RETVAL
2169 3043
2170int 3044int
2171is_traced (Coro::State coro) 3045is_traced (Coro::State coro)
… …
2189 OUTPUT: 3063 OUTPUT:
2190 RETVAL 3064 RETVAL
2191 3065
2192void 3066void
2193force_cctx () 3067force_cctx ()
3068 PROTOTYPE:
2194 CODE: 3069 CODE:
2195 struct coro *coro = SvSTATE (coro_current);
2196 coro->cctx->idle_sp = 0; 3070 cctx_current->idle_sp = 0;
2197 3071
2198void 3072void
2199swap_defsv (Coro::State self) 3073swap_defsv (Coro::State self)
2200 PROTOTYPE: $ 3074 PROTOTYPE: $
2201 ALIAS: 3075 ALIAS:
2202 swap_defav = 1 3076 swap_defav = 1
2203 CODE: 3077 CODE:
2204 if (!self->slot) 3078 if (!self->slot)
2205 croak ("cannot swap state with coroutine that has no saved state"); 3079 croak ("cannot swap state with coroutine that has no saved state,");
2206 else 3080 else
2207 { 3081 {
2208 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3082 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2209 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3083 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2210 3084
2211 SV *tmp = *src; *src = *dst; *dst = tmp; 3085 SV *tmp = *src; *src = *dst; *dst = tmp;
2212 } 3086 }
2213 3087
3088
2214MODULE = Coro::State PACKAGE = Coro 3089MODULE = Coro::State PACKAGE = Coro
2215 3090
2216BOOT: 3091BOOT:
2217{ 3092{
2218 int i; 3093 int i;
2219 3094
2220 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2221 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3095 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2222 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3096 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2223 3097 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3098 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2224 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3099 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2225 SvREADONLY_on (coro_current); 3100 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3101 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3102 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3103
3104 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3105 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3106 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3107 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2226 3108
2227 coro_stash = gv_stashpv ("Coro", TRUE); 3109 coro_stash = gv_stashpv ("Coro", TRUE);
2228 3110
2229 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3111 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2230 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3112 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2238 3120
2239 { 3121 {
2240 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3122 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2241 3123
2242 coroapi.schedule = api_schedule; 3124 coroapi.schedule = api_schedule;
3125 coroapi.schedule_to = api_schedule_to;
2243 coroapi.cede = api_cede; 3126 coroapi.cede = api_cede;
2244 coroapi.cede_notself = api_cede_notself; 3127 coroapi.cede_notself = api_cede_notself;
2245 coroapi.ready = api_ready; 3128 coroapi.ready = api_ready;
2246 coroapi.is_ready = api_is_ready; 3129 coroapi.is_ready = api_is_ready;
2247 coroapi.nready = &coro_nready; 3130 coroapi.nready = coro_nready;
2248 coroapi.current = coro_current; 3131 coroapi.current = coro_current;
2249 3132
2250 GCoroAPI = &coroapi; 3133 /*GCoroAPI = &coroapi;*/
2251 sv_setiv (sv, (IV)&coroapi); 3134 sv_setiv (sv, (IV)&coroapi);
2252 SvREADONLY_on (sv); 3135 SvREADONLY_on (sv);
2253 } 3136 }
2254} 3137}
3138
3139void
3140terminate (...)
3141 CODE:
3142 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3143
3144void
3145schedule (...)
3146 CODE:
3147 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3148
3149void
3150schedule_to (...)
3151 CODE:
3152 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3153
3154void
3155cede_to (...)
3156 CODE:
3157 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3158
3159void
3160cede (...)
3161 CODE:
3162 CORO_EXECUTE_SLF_XS (slf_init_cede);
3163
3164void
3165cede_notself (...)
3166 CODE:
3167 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3168
3169void
3170_cancel (Coro::State self)
3171 CODE:
3172 coro_state_destroy (aTHX_ self);
3173 coro_call_on_destroy (aTHX_ self);
2255 3174
2256void 3175void
2257_set_current (SV *current) 3176_set_current (SV *current)
2258 PROTOTYPE: $ 3177 PROTOTYPE: $
2259 CODE: 3178 CODE:
… …
2262 3181
2263void 3182void
2264_set_readyhook (SV *hook) 3183_set_readyhook (SV *hook)
2265 PROTOTYPE: $ 3184 PROTOTYPE: $
2266 CODE: 3185 CODE:
2267 LOCK;
2268 SvREFCNT_dec (coro_readyhook); 3186 SvREFCNT_dec (coro_readyhook);
2269 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3187 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2270 UNLOCK;
2271 3188
2272int 3189int
2273prio (Coro::State coro, int newprio = 0) 3190prio (Coro::State coro, int newprio = 0)
3191 PROTOTYPE: $;$
2274 ALIAS: 3192 ALIAS:
2275 nice = 1 3193 nice = 1
2276 CODE: 3194 CODE:
2277{ 3195{
2278 RETVAL = coro->prio; 3196 RETVAL = coro->prio;
… …
2293 3211
2294SV * 3212SV *
2295ready (SV *self) 3213ready (SV *self)
2296 PROTOTYPE: $ 3214 PROTOTYPE: $
2297 CODE: 3215 CODE:
2298 RETVAL = boolSV (api_ready (self)); 3216 RETVAL = boolSV (api_ready (aTHX_ self));
2299 OUTPUT: 3217 OUTPUT:
2300 RETVAL 3218 RETVAL
2301 3219
2302int 3220int
2303nready (...) 3221nready (...)
… …
2305 CODE: 3223 CODE:
2306 RETVAL = coro_nready; 3224 RETVAL = coro_nready;
2307 OUTPUT: 3225 OUTPUT:
2308 RETVAL 3226 RETVAL
2309 3227
2310# for async_pool speedup
2311void 3228void
2312_pool_1 (SV *cb) 3229_pool_handler (...)
2313 CODE: 3230 CODE:
2314{ 3231 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2315 struct coro *coro = SvSTATE (coro_current);
2316 HV *hv = (HV *)SvRV (coro_current);
2317 AV *defav = GvAV (PL_defgv);
2318 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2319 AV *invoke_av;
2320 int i, len;
2321 3232
2322 if (!invoke) 3233void
3234async_pool (SV *cv, ...)
3235 PROTOTYPE: &@
3236 PPCODE:
3237{
3238 HV *hv = (HV *)av_pop (av_async_pool);
3239 AV *av = newAV ();
3240 SV *cb = ST (0);
3241 int i;
3242
3243 av_extend (av, items - 2);
3244 for (i = 1; i < items; ++i)
3245 av_push (av, SvREFCNT_inc_NN (ST (i)));
3246
3247 if ((SV *)hv == &PL_sv_undef)
2323 { 3248 {
2324 SV *old = PL_diehook; 3249 PUSHMARK (SP);
2325 PL_diehook = 0; 3250 EXTEND (SP, 2);
2326 SvREFCNT_dec (old); 3251 PUSHs (sv_Coro);
2327 croak ("\3async_pool terminate\2\n"); 3252 PUSHs ((SV *)cv_pool_handler);
3253 PUTBACK;
3254 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3255 SPAGAIN;
3256
3257 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2328 } 3258 }
2329 3259
2330 SvREFCNT_dec (coro->saved_deffh);
2331 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2332
2333 hv_store (hv, "desc", sizeof ("desc") - 1,
2334 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2335
2336 invoke_av = (AV *)SvRV (invoke);
2337 len = av_len (invoke_av);
2338
2339 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2340
2341 if (len > 0)
2342 { 3260 {
2343 av_fill (defav, len - 1); 3261 struct coro *coro = SvSTATE_hv (hv);
2344 for (i = 0; i < len; ++i) 3262
2345 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3263 assert (!coro->invoke_cb);
3264 assert (!coro->invoke_av);
3265 coro->invoke_cb = SvREFCNT_inc (cb);
3266 coro->invoke_av = av;
2346 } 3267 }
2347 3268
3269 api_ready (aTHX_ (SV *)hv);
3270
3271 if (GIMME_V != G_VOID)
3272 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3273 else
2348 SvREFCNT_dec (invoke); 3274 SvREFCNT_dec (hv);
2349} 3275}
2350 3276
2351void 3277SV *
2352_pool_2 (SV *cb) 3278rouse_cb ()
3279 PROTOTYPE:
2353 CODE: 3280 CODE:
2354{ 3281 RETVAL = coro_new_rouse_cb (aTHX);
2355 struct coro *coro = SvSTATE (coro_current);
2356
2357 sv_setsv (cb, &PL_sv_undef);
2358
2359 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2360 coro->saved_deffh = 0;
2361
2362 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2363 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2364 {
2365 SV *old = PL_diehook;
2366 PL_diehook = 0;
2367 SvREFCNT_dec (old);
2368 croak ("\3async_pool terminate\2\n");
2369 }
2370
2371 av_clear (GvAV (PL_defgv));
2372 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2373 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2374
2375 coro->prio = 0;
2376
2377 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2378 api_trace (coro_current, 0);
2379
2380 av_push (av_async_pool, newSVsv (coro_current));
2381}
2382
2383#if 0
2384
2385void
2386_generator_call (...)
2387 PROTOTYPE: @
2388 PPCODE:
2389 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2390 xxxx
2391 abort ();
2392
2393SV *
2394gensub (SV *sub, ...)
2395 PROTOTYPE: &;@
2396 CODE:
2397{
2398 struct coro *coro;
2399 MAGIC *mg;
2400 CV *xcv;
2401 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2402 int i;
2403
2404 CvGV (ncv) = CvGV (cv);
2405 CvFILE (ncv) = CvFILE (cv);
2406
2407 Newz (0, coro, 1, struct coro);
2408 coro->args = newAV ();
2409 coro->flags = CF_NEW;
2410
2411 av_extend (coro->args, items - 1);
2412 for (i = 1; i < items; i++)
2413 av_push (coro->args, newSVsv (ST (i)));
2414
2415 CvISXSUB_on (ncv);
2416 CvXSUBANY (ncv).any_ptr = (void *)coro;
2417
2418 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2419
2420 CvXSUB (ncv) = CvXSUB (xcv);
2421 CvANON_on (ncv);
2422
2423 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2424 RETVAL = newRV_noinc ((SV *)ncv);
2425}
2426 OUTPUT: 3282 OUTPUT:
2427 RETVAL 3283 RETVAL
2428 3284
2429#endif
2430
2431
2432MODULE = Coro::State PACKAGE = Coro::AIO
2433
2434void 3285void
2435_get_state (SV *self) 3286rouse_wait (...)
3287 PROTOTYPE: ;$
2436 PPCODE: 3288 PPCODE:
2437{ 3289 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2438 AV *defav = GvAV (PL_defgv);
2439 AV *av = newAV ();
2440 int i;
2441 SV *data_sv = newSV (sizeof (struct io_state));
2442 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2443 SvCUR_set (data_sv, sizeof (struct io_state));
2444 SvPOK_only (data_sv);
2445 3290
2446 data->errorno = errno;
2447 data->laststype = PL_laststype;
2448 data->laststatval = PL_laststatval;
2449 data->statcache = PL_statcache;
2450 3291
2451 av_extend (av, AvFILLp (defav) + 1 + 1); 3292MODULE = Coro::State PACKAGE = PerlIO::cede
2452 3293
2453 for (i = 0; i <= AvFILLp (defav); ++i) 3294BOOT:
2454 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3295 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2455 3296
2456 av_push (av, data_sv);
2457 3297
2458 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3298MODULE = Coro::State PACKAGE = Coro::Semaphore
2459 3299
2460 api_ready (self); 3300SV *
2461} 3301new (SV *klass, SV *count = 0)
3302 CODE:
3303 RETVAL = sv_bless (
3304 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3305 GvSTASH (CvGV (cv))
3306 );
3307 OUTPUT:
3308 RETVAL
3309
3310# helper for Coro::Channel
3311SV *
3312_alloc (int count)
3313 CODE:
3314 RETVAL = coro_waitarray_new (aTHX_ count);
3315 OUTPUT:
3316 RETVAL
3317
3318SV *
3319count (SV *self)
3320 CODE:
3321 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3322 OUTPUT:
3323 RETVAL
2462 3324
2463void 3325void
2464_set_state (SV *state) 3326up (SV *self, int adjust = 1)
2465 PROTOTYPE: $ 3327 ALIAS:
3328 adjust = 1
3329 CODE:
3330 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3331
3332void
3333down (...)
3334 CODE:
3335 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3336
3337void
3338wait (...)
3339 CODE:
3340 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3341
3342void
3343try (SV *self)
3344 PPCODE:
3345{
3346 AV *av = (AV *)SvRV (self);
3347 SV *count_sv = AvARRAY (av)[0];
3348 IV count = SvIVX (count_sv);
3349
3350 if (count > 0)
3351 {
3352 --count;
3353 SvIVX (count_sv) = count;
3354 XSRETURN_YES;
3355 }
3356 else
3357 XSRETURN_NO;
3358}
3359
3360void
3361waiters (SV *self)
3362 PPCODE:
3363{
3364 AV *av = (AV *)SvRV (self);
3365 int wcount = AvFILLp (av) + 1 - 1;
3366
3367 if (GIMME_V == G_SCALAR)
3368 XPUSHs (sv_2mortal (newSViv (wcount)));
3369 else
3370 {
3371 int i;
3372 EXTEND (SP, wcount);
3373 for (i = 1; i <= wcount; ++i)
3374 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3375 }
3376}
3377
3378MODULE = Coro::State PACKAGE = Coro::Signal
3379
3380SV *
3381new (SV *klass)
2466 PPCODE: 3382 CODE:
3383 RETVAL = sv_bless (
3384 coro_waitarray_new (aTHX_ 0),
3385 GvSTASH (CvGV (cv))
3386 );
3387 OUTPUT:
3388 RETVAL
3389
3390void
3391wait (...)
3392 CODE:
3393 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3394
3395void
3396broadcast (SV *self)
3397 CODE:
2467{ 3398{
2468 AV *av = (AV *)SvRV (state); 3399 AV *av = (AV *)SvRV (self);
2469 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3400 coro_signal_wake (aTHX_ av, AvFILLp (av));
2470 int i; 3401}
2471 3402
2472 errno = data->errorno; 3403void
2473 PL_laststype = data->laststype; 3404send (SV *self)
2474 PL_laststatval = data->laststatval; 3405 CODE:
2475 PL_statcache = data->statcache; 3406{
3407 AV *av = (AV *)SvRV (self);
2476 3408
2477 EXTEND (SP, AvFILLp (av)); 3409 if (AvFILLp (av))
2478 for (i = 0; i < AvFILLp (av); ++i) 3410 coro_signal_wake (aTHX_ av, 1);
2479 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3411 else
3412 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2480} 3413}
3414
3415IV
3416awaited (SV *self)
3417 CODE:
3418 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3419 OUTPUT:
3420 RETVAL
2481 3421
2482 3422
2483MODULE = Coro::State PACKAGE = Coro::AnyEvent 3423MODULE = Coro::State PACKAGE = Coro::AnyEvent
2484 3424
2485BOOT: 3425BOOT:
2486 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3426 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2487 3427
2488SV * 3428void
2489_schedule (...) 3429_schedule (...)
2490 PROTOTYPE: @
2491 CODE: 3430 CODE:
2492{ 3431{
2493 static int incede; 3432 static int incede;
2494 3433
2495 api_cede_notself (); 3434 api_cede_notself (aTHX);
2496 3435
2497 ++incede; 3436 ++incede;
2498 while (coro_nready >= incede && api_cede ()) 3437 while (coro_nready >= incede && api_cede (aTHX))
2499 ; 3438 ;
2500 3439
2501 sv_setsv (sv_activity, &PL_sv_undef); 3440 sv_setsv (sv_activity, &PL_sv_undef);
2502 if (coro_nready >= incede) 3441 if (coro_nready >= incede)
2503 { 3442 {
2504 PUSHMARK (SP); 3443 PUSHMARK (SP);
2505 PUTBACK; 3444 PUTBACK;
2506 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3445 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2507 SPAGAIN;
2508 } 3446 }
2509 3447
2510 --incede; 3448 --incede;
2511} 3449}
2512 3450
2513 3451
2514MODULE = Coro::State PACKAGE = PerlIO::cede 3452MODULE = Coro::State PACKAGE = Coro::AIO
2515 3453
2516BOOT: 3454void
2517 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3455_register (char *target, char *proto, SV *req)
3456 CODE:
3457{
3458 CV *req_cv = coro_sv_2cv (aTHX_ req);
3459 /* newXSproto doesn't return the CV on 5.8 */
3460 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3461 sv_setpv ((SV *)slf_cv, proto);
3462 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3463}
2518 3464

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