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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 1.349 by root, Wed Jun 10 00:47:24 2009 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_dirty
125 139
126#if __GNUC__ >= 3 140#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
128# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
129# define INLINE static inline 143# define INLINE static inline
… …
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; 180static SV *sv_idle; /* $Coro::idle */
188};
189 181
190static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 184static SV *rv_diehook;
193static SV *rv_warnhook; 185static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
195 187
196/* async_pool helper stuff */ 188/* async_pool helper stuff */
197static SV *sv_pool_rss; 189static SV *sv_pool_rss;
198static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
199static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
200 196
201/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
202static SV *sv_activity; 198static SV *sv_activity;
203 199
204static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 210};
215 211
216/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 213typedef struct coro_cctx
214{
218 struct coro_cctx *next; 215 struct coro_cctx *next;
219 216
220 /* the stack */ 217 /* the stack */
221 void *sptr; 218 void *sptr;
222 size_t ssize; 219 size_t ssize;
… …
232 int valgrind_id; 229 int valgrind_id;
233#endif 230#endif
234 unsigned char flags; 231 unsigned char flags;
235} coro_cctx; 232} coro_cctx;
236 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
237enum { 238enum {
238 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
239 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
240 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
243 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
242}; 244};
243 245
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 246/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 247typedef struct
248{
246 SV *defsv; 249 SV *defsv;
247 AV *defav; 250 AV *defav;
248 SV *errsv; 251 SV *errsv;
249 SV *irsgv; 252 SV *irsgv;
253 HV *hinthv;
250#define VAR(name,type) type name; 254#define VAR(name,type) type name;
251# include "state.h" 255# include "state.h"
252#undef VAR 256#undef VAR
253} perl_slots; 257} perl_slots;
254 258
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 259#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 260
257/* this is a structure representing a perl-level coroutine */ 261/* this is a structure representing a perl-level coroutine */
258struct coro { 262struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 263 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 264 coro_cctx *cctx;
261 265
262 /* process data */ 266 /* ready queue */
267 struct coro *next_ready;
268
269 /* state data */
270 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 271 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 272 perl_slots *slot; /* basically the saved sp */
265 273
274 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 275 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 276 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 277 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 278 HV *hv; /* the perl hash associated with this coro, if any */
279 void (*on_destroy)(pTHX_ struct coro *coro);
270 280
271 /* statistics */ 281 /* statistics */
272 int usecount; /* number of transfers to this coro */ 282 int usecount; /* number of transfers to this coro */
273 283
274 /* coro process data */ 284 /* coro process data */
275 int prio; 285 int prio;
276 SV *throw; /* exception to be thrown */ 286 SV *except; /* exception to be thrown */
287 SV *rouse_cb;
277 288
278 /* async_pool */ 289 /* async_pool */
279 SV *saved_deffh; 290 SV *saved_deffh;
291 SV *invoke_cb;
292 AV *invoke_av;
293
294 /* on_enter/on_leave */
295 AV *on_enter;
296 AV *on_leave;
280 297
281 /* linked list */ 298 /* linked list */
282 struct coro *next, *prev; 299 struct coro *next, *prev;
283}; 300};
284 301
285typedef struct coro *Coro__State; 302typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 303typedef struct coro *Coro__State_or_hashref;
304
305/* the following variables are effectively part of the perl context */
306/* and get copied between struct coro and these variables */
307/* the mainr easonw e don't support windows process emulation */
308static struct CoroSLF slf_frame; /* the current slf frame */
287 309
288/** Coro ********************************************************************/ 310/** Coro ********************************************************************/
289 311
290#define PRIO_MAX 3 312#define PRIO_MAX 3
291#define PRIO_HIGH 1 313#define PRIO_HIGH 1
… …
295#define PRIO_MIN -4 317#define PRIO_MIN -4
296 318
297/* for Coro.pm */ 319/* for Coro.pm */
298static SV *coro_current; 320static SV *coro_current;
299static SV *coro_readyhook; 321static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 322static struct coro *coro_ready [PRIO_MAX - PRIO_MIN + 1][2]; /* head|tail */
301static int coro_nready; 323static CV *cv_coro_run, *cv_coro_terminate;
302static struct coro *coro_first; 324static struct coro *coro_first;
325#define coro_nready coroapi.nready
303 326
304/** lowlevel stuff **********************************************************/ 327/** lowlevel stuff **********************************************************/
305 328
306static SV * 329static SV *
307coro_get_sv (pTHX_ const char *name, int create) 330coro_get_sv (pTHX_ const char *name, int create)
… …
331 get_hv (name, create); 354 get_hv (name, create);
332#endif 355#endif
333 return get_hv (name, create); 356 return get_hv (name, create);
334} 357}
335 358
359/* may croak */
360INLINE CV *
361coro_sv_2cv (pTHX_ SV *sv)
362{
363 HV *st;
364 GV *gvp;
365 CV *cv = sv_2cv (sv, &st, &gvp, 0);
366
367 if (!cv)
368 croak ("code reference expected");
369
370 return cv;
371}
372
373/*****************************************************************************/
374/* magic glue */
375
376#define CORO_MAGIC_type_cv 26
377#define CORO_MAGIC_type_state PERL_MAGIC_ext
378
379#define CORO_MAGIC_NN(sv, type) \
380 (expect_true (SvMAGIC (sv)->mg_type == type) \
381 ? SvMAGIC (sv) \
382 : mg_find (sv, type))
383
384#define CORO_MAGIC(sv, type) \
385 (expect_true (SvMAGIC (sv)) \
386 ? CORO_MAGIC_NN (sv, type) \
387 : 0)
388
389#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
390#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
391
392INLINE struct coro *
393SvSTATE_ (pTHX_ SV *coro)
394{
395 HV *stash;
396 MAGIC *mg;
397
398 if (SvROK (coro))
399 coro = SvRV (coro);
400
401 if (expect_false (SvTYPE (coro) != SVt_PVHV))
402 croak ("Coro::State object required");
403
404 stash = SvSTASH (coro);
405 if (expect_false (stash != coro_stash && stash != coro_state_stash))
406 {
407 /* very slow, but rare, check */
408 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
409 croak ("Coro::State object required");
410 }
411
412 mg = CORO_MAGIC_state (coro);
413 return (struct coro *)mg->mg_ptr;
414}
415
416#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
417
418/* faster than SvSTATE, but expects a coroutine hv */
419#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
420#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
421
422/*****************************************************************************/
423/* padlist management and caching */
424
336static AV * 425static AV *
337coro_clone_padlist (pTHX_ CV *cv) 426coro_derive_padlist (pTHX_ CV *cv)
338{ 427{
339 AV *padlist = CvPADLIST (cv); 428 AV *padlist = CvPADLIST (cv);
340 AV *newpadlist, *newpad; 429 AV *newpadlist, *newpad;
341 430
342 newpadlist = newAV (); 431 newpadlist = newAV ();
… …
347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 436 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
348#endif 437#endif
349 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 438 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
350 --AvFILLp (padlist); 439 --AvFILLp (padlist);
351 440
352 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 441 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
353 av_store (newpadlist, 1, (SV *)newpad); 442 av_store (newpadlist, 1, (SV *)newpad);
354 443
355 return newpadlist; 444 return newpadlist;
356} 445}
357 446
358static void 447static void
359free_padlist (pTHX_ AV *padlist) 448free_padlist (pTHX_ AV *padlist)
360{ 449{
361 /* may be during global destruction */ 450 /* may be during global destruction */
362 if (SvREFCNT (padlist)) 451 if (!IN_DESTRUCT)
363 { 452 {
364 I32 i = AvFILLp (padlist); 453 I32 i = AvFILLp (padlist);
365 while (i >= 0) 454
455 while (i > 0) /* special-case index 0 */
366 { 456 {
367 SV **svp = av_fetch (padlist, i--, FALSE); 457 /* we try to be extra-careful here */
368 if (svp) 458 AV *av = (AV *)AvARRAY (padlist)[i--];
369 { 459 I32 j = AvFILLp (av);
370 SV *sv; 460
371 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 461 while (j >= 0)
462 SvREFCNT_dec (AvARRAY (av)[j--]);
463
464 AvFILLp (av) = -1;
372 SvREFCNT_dec (sv); 465 SvREFCNT_dec (av);
373
374 SvREFCNT_dec (*svp);
375 }
376 } 466 }
377 467
468 SvREFCNT_dec (AvARRAY (padlist)[0]);
469
470 AvFILLp (padlist) = -1;
378 SvREFCNT_dec ((SV*)padlist); 471 SvREFCNT_dec ((SV*)padlist);
379 } 472 }
380} 473}
381 474
382static int 475static int
… …
391 484
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 485 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 486
394 return 0; 487 return 0;
395} 488}
396
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext
398#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 489
400static MGVTBL coro_cv_vtbl = { 490static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 491 0, 0, 0, 0,
402 coro_cv_free 492 coro_cv_free
403}; 493};
404
405#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \
407 ? SvMAGIC (sv)->mg_type == type \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0
411
412#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)
414
415INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro)
417{
418 HV *stash;
419 MAGIC *mg;
420
421 if (SvROK (coro))
422 coro = SvRV (coro);
423
424 if (expect_false (SvTYPE (coro) != SVt_PVHV))
425 croak ("Coro::State object required");
426
427 stash = SvSTASH (coro);
428 if (expect_false (stash != coro_stash && stash != coro_state_stash))
429 {
430 /* very slow, but rare, check */
431 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
432 croak ("Coro::State object required");
433 }
434
435 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr;
437}
438
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
440 494
441/* the next two functions merely cache the padlists */ 495/* the next two functions merely cache the padlists */
442static void 496static void
443get_padlist (pTHX_ CV *cv) 497get_padlist (pTHX_ CV *cv)
444{ 498{
… …
450 else 504 else
451 { 505 {
452#if CORO_PREFER_PERL_FUNCTIONS 506#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 507 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 508 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 509 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 510 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 511 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 512 SvREFCNT_dec (cp);
459#else 513#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 514 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
461#endif 515#endif
462 } 516 }
463} 517}
464 518
465static void 519static void
… …
472 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 526 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
473 527
474 av = (AV *)mg->mg_obj; 528 av = (AV *)mg->mg_obj;
475 529
476 if (expect_false (AvFILLp (av) >= AvMAX (av))) 530 if (expect_false (AvFILLp (av) >= AvMAX (av)))
477 av_extend (av, AvMAX (av) + 1); 531 av_extend (av, AvFILLp (av) + 1);
478 532
479 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 533 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
480} 534}
481 535
482/** load & save, init *******************************************************/ 536/** load & save, init *******************************************************/
537
538static void
539on_enterleave_call (pTHX_ SV *cb);
483 540
484static void 541static void
485load_perl (pTHX_ Coro__State c) 542load_perl (pTHX_ Coro__State c)
486{ 543{
487 perl_slots *slot = c->slot; 544 perl_slots *slot = c->slot;
488 c->slot = 0; 545 c->slot = 0;
489 546
490 PL_mainstack = c->mainstack; 547 PL_mainstack = c->mainstack;
491 548
492 GvSV (PL_defgv) = slot->defsv; 549 GvSV (PL_defgv) = slot->defsv;
493 GvAV (PL_defgv) = slot->defav; 550 GvAV (PL_defgv) = slot->defav;
494 GvSV (PL_errgv) = slot->errsv; 551 GvSV (PL_errgv) = slot->errsv;
495 GvSV (irsgv) = slot->irsgv; 552 GvSV (irsgv) = slot->irsgv;
553 GvHV (PL_hintgv) = slot->hinthv;
496 554
497 #define VAR(name,type) PL_ ## name = slot->name; 555 #define VAR(name,type) PL_ ## name = slot->name;
498 # include "state.h" 556 # include "state.h"
499 #undef VAR 557 #undef VAR
500 558
… …
511 CvPADLIST (cv) = (AV *)POPs; 569 CvPADLIST (cv) = (AV *)POPs;
512 } 570 }
513 571
514 PUTBACK; 572 PUTBACK;
515 } 573 }
574
575 slf_frame = c->slf_frame;
576 CORO_THROW = c->except;
577
578 if (expect_false (c->on_enter))
579 {
580 int i;
581
582 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
583 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
584 }
516} 585}
517 586
518static void 587static void
519save_perl (pTHX_ Coro__State c) 588save_perl (pTHX_ Coro__State c)
520{ 589{
590 if (expect_false (c->on_leave))
591 {
592 int i;
593
594 for (i = AvFILLp (c->on_leave); i >= 0; --i)
595 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
596 }
597
598 c->except = CORO_THROW;
599 c->slf_frame = slf_frame;
600
521 { 601 {
522 dSP; 602 dSP;
523 I32 cxix = cxstack_ix; 603 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 604 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 605 PERL_SI *top_si = PL_curstackinfo;
… …
580 c->mainstack = PL_mainstack; 660 c->mainstack = PL_mainstack;
581 661
582 { 662 {
583 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 663 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
584 664
585 slot->defav = GvAV (PL_defgv); 665 slot->defav = GvAV (PL_defgv);
586 slot->defsv = DEFSV; 666 slot->defsv = DEFSV;
587 slot->errsv = ERRSV; 667 slot->errsv = ERRSV;
588 slot->irsgv = GvSV (irsgv); 668 slot->irsgv = GvSV (irsgv);
669 slot->hinthv = GvHV (PL_hintgv);
589 670
590 #define VAR(name,type) slot->name = PL_ ## name; 671 #define VAR(name,type) slot->name = PL_ ## name;
591 # include "state.h" 672 # include "state.h"
592 #undef VAR 673 #undef VAR
593 } 674 }
594} 675}
595 676
596/* 677/*
597 * allocate various perl stacks. This is an exact copy 678 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 679 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 680 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 681 * not usually need a lot of stackspace.
601 */ 682 */
602#if CORO_PREFER_PERL_FUNCTIONS 683#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 684# define coro_init_stacks(thx) init_stacks ()
604#else 685#else
605static void 686static void
606coro_init_stacks (pTHX) 687coro_init_stacks (pTHX)
607{ 688{
608 PL_curstackinfo = new_stackinfo(32, 8); 689 PL_curstackinfo = new_stackinfo(32, 8);
… …
671#if !PERL_VERSION_ATLEAST (5,10,0) 752#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 753 Safefree (PL_retstack);
673#endif 754#endif
674} 755}
675 756
757#define CORO_RSS \
758 rss += sizeof (SYM (curstackinfo)); \
759 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
760 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
761 rss += SYM (tmps_max) * sizeof (SV *); \
762 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
763 rss += SYM (scopestack_max) * sizeof (I32); \
764 rss += SYM (savestack_max) * sizeof (ANY);
765
676static size_t 766static size_t
677coro_rss (pTHX_ struct coro *coro) 767coro_rss (pTHX_ struct coro *coro)
678{ 768{
679 size_t rss = sizeof (*coro); 769 size_t rss = sizeof (*coro);
680 770
681 if (coro->mainstack) 771 if (coro->mainstack)
682 { 772 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 773 if (coro->flags & CF_RUNNING)
687 { 774 {
688 slot = &tmp_slot; 775 #define SYM(sym) PL_ ## sym
689 776 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 777 #undef SYM
693 } 778 }
694 else 779 else
695 slot = coro->slot;
696
697 if (slot)
698 { 780 {
699 rss += sizeof (slot->curstackinfo); 781 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 782 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 783 #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 } 784 }
711 } 785 }
712 786
713 return rss; 787 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} 788}
734 789
735/** coroutine stack handling ************************************************/ 790/** coroutine stack handling ************************************************/
736 791
737static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 792static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
746#endif 801#endif
747 802
748/* 803/*
749 * This overrides the default magic get method of %SIG elements. 804 * This overrides the default magic get method of %SIG elements.
750 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 805 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
751 * and instead of tryign to save and restore the hash elements, we just provide 806 * and instead of trying to save and restore the hash elements, we just provide
752 * readback here. 807 * readback here.
753 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
754 * not expecting this to actually change the hook. This is a potential problem
755 * when a schedule happens then, but we ignore this.
756 */ 808 */
757static int 809static int
758coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 810coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
759{ 811{
760 const char *s = MgPV_nolen_const (mg); 812 const char *s = MgPV_nolen_const (mg);
… …
813 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 865 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
814 866
815 if (svp) 867 if (svp)
816 { 868 {
817 SV *old = *svp; 869 SV *old = *svp;
818 *svp = newSVsv (sv); 870 *svp = SvOK (sv) ? newSVsv (sv) : 0;
819 SvREFCNT_dec (old); 871 SvREFCNT_dec (old);
820 return 0; 872 return 0;
821 } 873 }
822 } 874 }
823 875
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 876 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 877}
826 878
827static void 879static void
880prepare_nop (pTHX_ struct coro_transfer_args *ta)
881{
882 /* kind of mega-hacky, but works */
883 ta->next = ta->prev = (struct coro *)ta;
884}
885
886static int
887slf_check_nop (pTHX_ struct CoroSLF *frame)
888{
889 return 0;
890}
891
892static int
893slf_check_repeat (pTHX_ struct CoroSLF *frame)
894{
895 return 1;
896}
897
898static UNOP coro_setup_op;
899
900static void NOINLINE /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 901coro_setup (pTHX_ struct coro *coro)
829{ 902{
830 /* 903 /*
831 * emulate part of the perl startup here. 904 * emulate part of the perl startup here.
832 */ 905 */
… …
834 907
835 PL_runops = RUNOPS_DEFAULT; 908 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 909 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 910 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 911 PL_comppad = 0;
912 PL_comppad_name = 0;
913 PL_comppad_name_fill = 0;
914 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 915 PL_curpm = 0;
840 PL_curpad = 0; 916 PL_curpad = 0;
841 PL_localizing = 0; 917 PL_localizing = 0;
842 PL_dirty = 0; 918 PL_dirty = 0;
843 PL_restartop = 0; 919 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 920#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 921 PL_parser = 0;
846#endif 922#endif
923 PL_hints = 0;
847 924
848 /* recreate the die/warn hooks */ 925 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 926 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 927 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
851 928
852 GvSV (PL_defgv) = newSV (0); 929 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 930 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 931 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 932 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
933 GvHV (PL_hintgv) = 0;
856 PL_rs = newSVsv (GvSV (irsgv)); 934 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 935 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 936
859 { 937 {
860 dSP; 938 dSP;
861 UNOP myop; 939 UNOP myop;
862 940
863 Zero (&myop, 1, UNOP); 941 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 942 myop.op_next = Nullop;
943 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 944 myop.op_flags = OPf_WANT_VOID;
866 945
867 PUSHMARK (SP); 946 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 947 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 948 PUTBACK;
870 PL_op = (OP *)&myop; 949 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 950 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 951 }
874 952
875 /* this newly created coroutine might be run on an existing cctx which most 953 /* 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, 954 * 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 */ 955 */
879 SSL_HEAD; 956 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880} 957 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881 958
959 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
960 coro_setup_op.op_next = PL_op;
961 coro_setup_op.op_type = OP_ENTERSUB;
962 coro_setup_op.op_ppaddr = pp_slf;
963 /* no flags etc. required, as an init function won't be called */
964
965 PL_op = (OP *)&coro_setup_op;
966
967 /* copy throw, in case it was set before coro_setup */
968 CORO_THROW = coro->except;
969}
970
882static void 971static void
883coro_destruct (pTHX_ struct coro *coro) 972coro_unwind_stacks (pTHX)
884{ 973{
885 if (!IN_DESTRUCT) 974 if (!IN_DESTRUCT)
886 { 975 {
887 /* restore all saved variables and stuff */ 976 /* restore all saved variables and stuff */
888 LEAVE_SCOPE (0); 977 LEAVE_SCOPE (0);
… …
896 POPSTACK_TO (PL_mainstack); 985 POPSTACK_TO (PL_mainstack);
897 986
898 /* unwind main stack */ 987 /* unwind main stack */
899 dounwind (-1); 988 dounwind (-1);
900 } 989 }
990}
991
992static void
993coro_destruct_perl (pTHX_ struct coro *coro)
994{
995 coro_unwind_stacks (aTHX);
901 996
902 SvREFCNT_dec (GvSV (PL_defgv)); 997 SvREFCNT_dec (GvSV (PL_defgv));
903 SvREFCNT_dec (GvAV (PL_defgv)); 998 SvREFCNT_dec (GvAV (PL_defgv));
904 SvREFCNT_dec (GvSV (PL_errgv)); 999 SvREFCNT_dec (GvSV (PL_errgv));
905 SvREFCNT_dec (PL_defoutgv); 1000 SvREFCNT_dec (PL_defoutgv);
906 SvREFCNT_dec (PL_rs); 1001 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv)); 1002 SvREFCNT_dec (GvSV (irsgv));
1003 SvREFCNT_dec (GvHV (PL_hintgv));
908 1004
909 SvREFCNT_dec (PL_diehook); 1005 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook); 1006 SvREFCNT_dec (PL_warnhook);
911 1007
912 SvREFCNT_dec (coro->saved_deffh); 1008 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 1009 SvREFCNT_dec (coro->rouse_cb);
1010 SvREFCNT_dec (coro->invoke_cb);
1011 SvREFCNT_dec (coro->invoke_av);
914 1012
915 coro_destruct_stacks (aTHX); 1013 coro_destruct_stacks (aTHX);
916} 1014}
917 1015
918INLINE void 1016INLINE void
… …
928static int 1026static int
929runops_trace (pTHX) 1027runops_trace (pTHX)
930{ 1028{
931 COP *oldcop = 0; 1029 COP *oldcop = 0;
932 int oldcxix = -2; 1030 int oldcxix = -2;
933 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 1031
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1032 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 1033 {
938 PERL_ASYNC_CHECK (); 1034 PERL_ASYNC_CHECK ();
939 1035
940 if (cctx->flags & CC_TRACE_ALL) 1036 if (cctx_current->flags & CC_TRACE_ALL)
941 { 1037 {
942 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1038 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
943 { 1039 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1040 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 1041 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 1042 AV *av = newAV (); /* return values */
947 SV **cb; 1043 SV **cb;
… …
984 1080
985 if (PL_curcop != &PL_compiling) 1081 if (PL_curcop != &PL_compiling)
986 { 1082 {
987 SV **cb; 1083 SV **cb;
988 1084
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1085 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1086 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1087 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1088
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1089 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1090 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1091 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1092 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1093 SV *fullname = sv_2mortal (newSV (0));
999 1094
1000 if (isGV (gv)) 1095 if (isGV (gv))
… …
1005 SAVETMPS; 1100 SAVETMPS;
1006 EXTEND (SP, 3); 1101 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1102 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1103 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1104 PUSHs (fullname);
1010 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1105 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1011 PUTBACK; 1106 PUTBACK;
1012 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1107 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); 1108 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1014 SPAGAIN; 1109 SPAGAIN;
1015 FREETMPS; 1110 FREETMPS;
… …
1018 } 1113 }
1019 1114
1020 oldcxix = cxstack_ix; 1115 oldcxix = cxstack_ix;
1021 } 1116 }
1022 1117
1023 if (cctx->flags & CC_TRACE_LINE) 1118 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1119 {
1025 dSP; 1120 dSP;
1026 1121
1027 PL_runops = RUNOPS_DEFAULT; 1122 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1123 ENTER;
… …
1047 1142
1048 TAINT_NOT; 1143 TAINT_NOT;
1049 return 0; 1144 return 0;
1050} 1145}
1051 1146
1147static struct CoroSLF cctx_ssl_frame;
1148
1052static void 1149static void
1053prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1150slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1151{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1152 ta->prev = 0;
1057} 1153}
1058 1154
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1155static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1156slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */ 1157{
1062/* also initialises PL_top_env */ 1158 *frame = cctx_ssl_frame;
1159
1160 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1161}
1162
1163/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1063static void NOINLINE 1164static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx) 1165cctx_prepare (pTHX)
1065{ 1166{
1066 dSP;
1067 UNOP myop;
1068
1069 PL_top_env = &PL_start_env; 1167 PL_top_env = &PL_start_env;
1070 1168
1071 if (cctx->flags & CC_TRACE) 1169 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1170 PL_runops = runops_trace;
1073 1171
1074 Zero (&myop, 1, UNOP); 1172 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1173 * that can lead to creation of a new cctx */
1076 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1174 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1175 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1077 1176
1078 PUSHMARK (SP); 1177 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1178 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1179
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1180 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1181 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1182}
1087 1183
1088/* the tail of transfer: execute stuff we can only do after a transfer */ 1184/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void 1185INLINE void
1090transfer_tail (pTHX) 1186transfer_tail (pTHX)
1091{ 1187{
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); 1188 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} 1189}
1108 1190
1109/* 1191/*
1110 * this is a _very_ stripped down perl interpreter ;) 1192 * this is a _very_ stripped down perl interpreter ;)
1111 */ 1193 */
… …
1118# endif 1200# endif
1119#endif 1201#endif
1120 { 1202 {
1121 dTHX; 1203 dTHX;
1122 1204
1123 /* we are the alternative tail to pp_set_stacklevel */ 1205 /* normally we would need to skip the entersub here */
1124 /* so do the same things here */ 1206 /* 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; 1207 /* PL_nop = PL_nop->op_next */
1129 1208
1130 /* inject a fake subroutine call to cctx_init */ 1209 /* inject a fake subroutine call to cctx_init */
1131 cctx_prepare (aTHX_ (coro_cctx *)arg); 1210 cctx_prepare (aTHX);
1132 1211
1133 /* cctx_run is the alternative tail of transfer() */ 1212 /* cctx_run is the alternative tail of transfer() */
1134 transfer_tail (aTHX); 1213 transfer_tail (aTHX);
1135 1214
1136 /* somebody or something will hit me for both perl_run and PL_restartop */ 1215 /* somebody or something will hit me for both perl_run and PL_restartop */
1137 PL_restartop = PL_op; 1216 PL_restartop = PL_op;
1138 perl_run (PL_curinterp); 1217 perl_run (PL_curinterp);
1218 /*
1219 * Unfortunately, there is no way to get at the return values of the
1220 * coro body here, as perl_run destroys these
1221 */
1139 1222
1140 /* 1223 /*
1141 * If perl-run returns we assume exit() was being called or the coro 1224 * 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) 1225 * 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 1226 * reason for perl_run to return. We try to exit by jumping to the
1144 * bootstrap-time "top" top_env, as we cannot restore the "main" 1227 * bootstrap-time "top" top_env, as we cannot restore the "main"
1145 * coroutine as Coro has no such concept 1228 * coroutine as Coro has no such concept.
1229 * This actually isn't valid with the pthread backend, but OSes requiring
1230 * that backend are too broken to do it in a standards-compliant way.
1146 */ 1231 */
1147 PL_top_env = main_top_env; 1232 PL_top_env = main_top_env;
1148 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1233 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1149 } 1234 }
1150} 1235}
… …
1227cctx_destroy (coro_cctx *cctx) 1312cctx_destroy (coro_cctx *cctx)
1228{ 1313{
1229 if (!cctx) 1314 if (!cctx)
1230 return; 1315 return;
1231 1316
1317 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1318
1232 --cctx_count; 1319 --cctx_count;
1233 coro_destroy (&cctx->cctx); 1320 coro_destroy (&cctx->cctx);
1234 1321
1235 /* coro_transfer creates new, empty cctx's */ 1322 /* coro_transfer creates new, empty cctx's */
1236 if (cctx->sptr) 1323 if (cctx->sptr)
… …
1294/** coroutine switching *****************************************************/ 1381/** coroutine switching *****************************************************/
1295 1382
1296static void 1383static void
1297transfer_check (pTHX_ struct coro *prev, struct coro *next) 1384transfer_check (pTHX_ struct coro *prev, struct coro *next)
1298{ 1385{
1386 /* TODO: throwing up here is considered harmful */
1387
1299 if (expect_true (prev != next)) 1388 if (expect_true (prev != next))
1300 { 1389 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1390 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"); 1391 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1303 1392
1304 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");
1306
1307 if (expect_false (next->flags & CF_DESTROYED)) 1393 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1394 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1309 1395
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1396#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1397 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"); 1398 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif 1399#endif
1314 } 1400 }
1315} 1401}
1316 1402
1317/* always use the TRANSFER macro */ 1403/* always use the TRANSFER macro */
1318static void NOINLINE 1404static void NOINLINE /* noinline so we have a fixed stackframe */
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1405transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1406{
1321 dSTACKLEVEL; 1407 dSTACKLEVEL;
1322 1408
1323 /* sometimes transfer is only called to set idle_sp */ 1409 /* sometimes transfer is only called to set idle_sp */
1324 if (expect_false (!next)) 1410 if (expect_false (!prev))
1325 { 1411 {
1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1412 cctx_current->idle_sp = STACKLEVEL;
1327 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1413 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1328 } 1414 }
1329 else if (expect_true (prev != next)) 1415 else if (expect_true (prev != next))
1330 { 1416 {
1331 coro_cctx *prev__cctx; 1417 coro_cctx *cctx_prev;
1332 1418
1333 if (expect_false (prev->flags & CF_NEW)) 1419 if (expect_false (prev->flags & CF_NEW))
1334 { 1420 {
1335 /* create a new empty/source context */ 1421 /* create a new empty/source context */
1336 prev->cctx = cctx_new_empty ();
1337 prev->flags &= ~CF_NEW; 1422 prev->flags &= ~CF_NEW;
1338 prev->flags |= CF_RUNNING; 1423 prev->flags |= CF_RUNNING;
1339 } 1424 }
1340 1425
1341 prev->flags &= ~CF_RUNNING; 1426 prev->flags &= ~CF_RUNNING;
1342 next->flags |= CF_RUNNING; 1427 next->flags |= CF_RUNNING;
1343
1344 LOCK;
1345 1428
1346 /* first get rid of the old state */ 1429 /* first get rid of the old state */
1347 save_perl (aTHX_ prev); 1430 save_perl (aTHX_ prev);
1348 1431
1349 if (expect_false (next->flags & CF_NEW)) 1432 if (expect_false (next->flags & CF_NEW))
… …
1354 coro_setup (aTHX_ next); 1437 coro_setup (aTHX_ next);
1355 } 1438 }
1356 else 1439 else
1357 load_perl (aTHX_ next); 1440 load_perl (aTHX_ next);
1358 1441
1359 prev__cctx = prev->cctx;
1360
1361 /* possibly untie and reuse the cctx */ 1442 /* possibly untie and reuse the cctx */
1362 if (expect_true ( 1443 if (expect_true (
1363 prev__cctx->idle_sp == STACKLEVEL 1444 cctx_current->idle_sp == STACKLEVEL
1364 && !(prev__cctx->flags & CC_TRACE) 1445 && !(cctx_current->flags & CC_TRACE)
1365 && !force_cctx 1446 && !force_cctx
1366 )) 1447 ))
1367 { 1448 {
1368 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1449 /* 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)); 1450 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1370 1451
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 */ 1452 /* 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 */ 1453 /* without this the next cctx_get might destroy the running cctx while still in use */
1375 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1454 if (expect_false (CCTX_EXPIRED (cctx_current)))
1376 if (!next->cctx) 1455 if (expect_true (!next->cctx))
1377 next->cctx = cctx_get (aTHX); 1456 next->cctx = cctx_get (aTHX);
1378 1457
1379 cctx_put (prev__cctx); 1458 cctx_put (cctx_current);
1380 } 1459 }
1460 else
1461 prev->cctx = cctx_current;
1381 1462
1382 ++next->usecount; 1463 ++next->usecount;
1383 1464
1384 if (expect_true (!next->cctx)) 1465 cctx_prev = cctx_current;
1385 next->cctx = cctx_get (aTHX); 1466 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1386 1467
1387 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1468 next->cctx = 0;
1388 transfer_next = next;
1389 1469
1390 if (expect_false (prev__cctx != next->cctx)) 1470 if (expect_false (cctx_prev != cctx_current))
1391 { 1471 {
1392 prev__cctx->top_env = PL_top_env; 1472 cctx_prev->top_env = PL_top_env;
1393 PL_top_env = next->cctx->top_env; 1473 PL_top_env = cctx_current->top_env;
1394 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1474 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1395 } 1475 }
1396 1476
1397 transfer_tail (aTHX); 1477 transfer_tail (aTHX);
1398 } 1478 }
1399} 1479}
… …
1406static int 1486static int
1407coro_state_destroy (pTHX_ struct coro *coro) 1487coro_state_destroy (pTHX_ struct coro *coro)
1408{ 1488{
1409 if (coro->flags & CF_DESTROYED) 1489 if (coro->flags & CF_DESTROYED)
1410 return 0; 1490 return 0;
1491
1492 if (coro->on_destroy && !PL_dirty)
1493 coro->on_destroy (aTHX_ coro);
1411 1494
1412 coro->flags |= CF_DESTROYED; 1495 coro->flags |= CF_DESTROYED;
1413 1496
1414 if (coro->flags & CF_READY) 1497 if (coro->flags & CF_READY)
1415 { 1498 {
1416 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1499 /* reduce nready, as destroying a ready coro effectively unreadies it */
1417 /* alternative: look through all ready queues and remove the coro */ 1500 /* alternative: look through all ready queues and remove the coro */
1418 LOCK;
1419 --coro_nready; 1501 --coro_nready;
1420 UNLOCK;
1421 } 1502 }
1422 else 1503 else
1423 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1504 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1424 1505
1425 if (coro->mainstack && coro->mainstack != main_mainstack) 1506 if (coro->mainstack
1507 && coro->mainstack != main_mainstack
1508 && coro->slot
1509 && !PL_dirty)
1426 { 1510 {
1427 struct coro temp; 1511 struct coro *current = SvSTATE_current;
1428 1512
1429 if (coro->flags & CF_RUNNING) 1513 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1430 croak ("FATAL: tried to destroy currently running coroutine");
1431 1514
1432 save_perl (aTHX_ &temp); 1515 save_perl (aTHX_ current);
1433 load_perl (aTHX_ coro); 1516 load_perl (aTHX_ coro);
1434 1517
1435 coro_destruct (aTHX_ coro); 1518 coro_destruct_perl (aTHX_ coro);
1436 1519
1437 load_perl (aTHX_ &temp); 1520 load_perl (aTHX_ current);
1438 1521
1439 coro->slot = 0; 1522 coro->slot = 0;
1440 } 1523 }
1441 1524
1442 cctx_destroy (coro->cctx); 1525 cctx_destroy (coro->cctx);
1526 SvREFCNT_dec (coro->startcv);
1443 SvREFCNT_dec (coro->args); 1527 SvREFCNT_dec (coro->args);
1528 SvREFCNT_dec (CORO_THROW);
1444 1529
1445 if (coro->next) coro->next->prev = coro->prev; 1530 if (coro->next) coro->next->prev = coro->prev;
1446 if (coro->prev) coro->prev->next = coro->next; 1531 if (coro->prev) coro->prev->next = coro->next;
1447 if (coro == coro_first) coro_first = coro->next; 1532 if (coro == coro_first) coro_first = coro->next;
1448 1533
… …
1486# define MGf_DUP 0 1571# define MGf_DUP 0
1487#endif 1572#endif
1488}; 1573};
1489 1574
1490static void 1575static void
1491prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1576prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1492{ 1577{
1493 ta->prev = SvSTATE (prev_sv); 1578 ta->prev = SvSTATE (prev_sv);
1494 ta->next = SvSTATE (next_sv); 1579 ta->next = SvSTATE (next_sv);
1495 TRANSFER_CHECK (*ta); 1580 TRANSFER_CHECK (*ta);
1496} 1581}
1497 1582
1498static void 1583static void
1499api_transfer (SV *prev_sv, SV *next_sv) 1584api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1500{ 1585{
1501 dTHX;
1502 struct transfer_args ta; 1586 struct coro_transfer_args ta;
1503 1587
1504 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1588 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1505 TRANSFER (ta, 1); 1589 TRANSFER (ta, 1);
1506} 1590}
1507 1591
1592/*****************************************************************************/
1593/* gensub: simple closure generation utility */
1594
1595#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1596
1597/* create a closure from XS, returns a code reference */
1598/* the arg can be accessed via GENSUB_ARG from the callback */
1599/* the callback must use dXSARGS/XSRETURN */
1600static SV *
1601gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1602{
1603 CV *cv = (CV *)newSV (0);
1604
1605 sv_upgrade ((SV *)cv, SVt_PVCV);
1606
1607 CvANON_on (cv);
1608 CvISXSUB_on (cv);
1609 CvXSUB (cv) = xsub;
1610 GENSUB_ARG = arg;
1611
1612 return newRV_noinc ((SV *)cv);
1613}
1614
1508/** Coro ********************************************************************/ 1615/** Coro ********************************************************************/
1509 1616
1510static void 1617INLINE void
1511coro_enq (pTHX_ SV *coro_sv) 1618coro_enq (pTHX_ struct coro *coro)
1512{ 1619{
1513 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1620 struct coro **ready = coro_ready [coro->prio - PRIO_MIN];
1514}
1515 1621
1516static SV * 1622 SvREFCNT_inc_NN (coro->hv);
1623
1624 coro->next_ready = 0;
1625 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1626 ready [1] = coro;
1627}
1628
1629INLINE struct coro *
1517coro_deq (pTHX) 1630coro_deq (pTHX)
1518{ 1631{
1519 int prio; 1632 int prio;
1520 1633
1521 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1634 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1522 if (AvFILLp (coro_ready [prio]) >= 0) 1635 {
1523 return av_shift (coro_ready [prio]); 1636 struct coro **ready = coro_ready [prio];
1637
1638 if (ready [0])
1639 {
1640 struct coro *coro = ready [0];
1641 ready [0] = coro->next_ready;
1642 return coro;
1643 }
1644 }
1524 1645
1525 return 0; 1646 return 0;
1526} 1647}
1527 1648
1528static int 1649static int
1529api_ready (SV *coro_sv) 1650api_ready (pTHX_ SV *coro_sv)
1530{ 1651{
1531 dTHX;
1532 struct coro *coro; 1652 struct coro *coro;
1533 SV *sv_hook; 1653 SV *sv_hook;
1534 void (*xs_hook)(void); 1654 void (*xs_hook)(void);
1535 1655
1536 if (SvROK (coro_sv))
1537 coro_sv = SvRV (coro_sv);
1538
1539 coro = SvSTATE (coro_sv); 1656 coro = SvSTATE (coro_sv);
1540 1657
1541 if (coro->flags & CF_READY) 1658 if (coro->flags & CF_READY)
1542 return 0; 1659 return 0;
1543 1660
1544 coro->flags |= CF_READY; 1661 coro->flags |= CF_READY;
1545 1662
1546 LOCK;
1547
1548 sv_hook = coro_nready ? 0 : coro_readyhook; 1663 sv_hook = coro_nready ? 0 : coro_readyhook;
1549 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1664 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1550 1665
1551 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1666 coro_enq (aTHX_ coro);
1552 ++coro_nready; 1667 ++coro_nready;
1553 1668
1554 UNLOCK;
1555
1556 if (sv_hook) 1669 if (sv_hook)
1557 { 1670 {
1558 dSP; 1671 dSP;
1559 1672
1560 ENTER; 1673 ENTER;
1561 SAVETMPS; 1674 SAVETMPS;
1562 1675
1563 PUSHMARK (SP); 1676 PUSHMARK (SP);
1564 PUTBACK; 1677 PUTBACK;
1565 call_sv (sv_hook, G_DISCARD); 1678 call_sv (sv_hook, G_VOID | G_DISCARD);
1566 SPAGAIN;
1567 1679
1568 FREETMPS; 1680 FREETMPS;
1569 LEAVE; 1681 LEAVE;
1570 } 1682 }
1571 1683
… …
1574 1686
1575 return 1; 1687 return 1;
1576} 1688}
1577 1689
1578static int 1690static int
1579api_is_ready (SV *coro_sv) 1691api_is_ready (pTHX_ SV *coro_sv)
1580{ 1692{
1581 dTHX;
1582
1583 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1693 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1584} 1694}
1585 1695
1696/* expects to own a reference to next->hv */
1586INLINE void 1697INLINE void
1587prepare_schedule (pTHX_ struct transfer_args *ta) 1698prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1588{ 1699{
1589 SV *prev_sv, *next_sv;
1590
1591 for (;;)
1592 {
1593 LOCK;
1594 next_sv = coro_deq (aTHX);
1595
1596 /* nothing to schedule: call the idle handler */
1597 if (expect_false (!next_sv))
1598 {
1599 dSP;
1600 UNLOCK;
1601
1602 ENTER;
1603 SAVETMPS;
1604
1605 PUSHMARK (SP);
1606 PUTBACK;
1607 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1608 SPAGAIN;
1609
1610 FREETMPS;
1611 LEAVE;
1612 continue;
1613 }
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 }
1630
1631 /* free this only after the transfer */
1632 prev_sv = SvRV (coro_current); 1700 SV *prev_sv = SvRV (coro_current);
1701
1633 ta->prev = SvSTATE (prev_sv); 1702 ta->prev = SvSTATE_hv (prev_sv);
1703 ta->next = next;
1704
1634 TRANSFER_CHECK (*ta); 1705 TRANSFER_CHECK (*ta);
1635 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1706
1636 ta->next->flags &= ~CF_READY;
1637 SvRV_set (coro_current, next_sv); 1707 SvRV_set (coro_current, (SV *)next->hv);
1638 1708
1639 LOCK;
1640 free_coro_mortal (aTHX); 1709 free_coro_mortal (aTHX);
1641 coro_mortal = prev_sv; 1710 coro_mortal = prev_sv;
1642 UNLOCK; 1711}
1712
1713static void
1714prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1715{
1716 for (;;)
1717 {
1718 struct coro *next = coro_deq (aTHX);
1719
1720 if (expect_true (next))
1721 {
1722 /* cannot transfer to destroyed coros, skip and look for next */
1723 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1724 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1725 else
1726 {
1727 next->flags &= ~CF_READY;
1728 --coro_nready;
1729
1730 prepare_schedule_to (aTHX_ ta, next);
1731 break;
1732 }
1733 }
1734 else
1735 {
1736 /* nothing to schedule: call the idle handler */
1737 if (SvROK (sv_idle)
1738 && SvOBJECT (SvRV (sv_idle)))
1739 {
1740 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1741 api_ready (aTHX_ SvRV (sv_idle));
1742 --coro_nready;
1743 }
1744 else
1745 {
1746 dSP;
1747
1748 ENTER;
1749 SAVETMPS;
1750
1751 PUSHMARK (SP);
1752 PUTBACK;
1753 call_sv (sv_idle, G_VOID | G_DISCARD);
1754
1755 FREETMPS;
1756 LEAVE;
1757 }
1758 }
1759 }
1643} 1760}
1644 1761
1645INLINE void 1762INLINE void
1646prepare_cede (pTHX_ struct transfer_args *ta) 1763prepare_cede (pTHX_ struct coro_transfer_args *ta)
1647{ 1764{
1648 api_ready (coro_current); 1765 api_ready (aTHX_ coro_current);
1649 prepare_schedule (aTHX_ ta); 1766 prepare_schedule (aTHX_ ta);
1650} 1767}
1651 1768
1769INLINE void
1770prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1771{
1772 SV *prev = SvRV (coro_current);
1773
1774 if (coro_nready)
1775 {
1776 prepare_schedule (aTHX_ ta);
1777 api_ready (aTHX_ prev);
1778 }
1779 else
1780 prepare_nop (aTHX_ ta);
1781}
1782
1783static void
1784api_schedule (pTHX)
1785{
1786 struct coro_transfer_args ta;
1787
1788 prepare_schedule (aTHX_ &ta);
1789 TRANSFER (ta, 1);
1790}
1791
1792static void
1793api_schedule_to (pTHX_ SV *coro_sv)
1794{
1795 struct coro_transfer_args ta;
1796 struct coro *next = SvSTATE (coro_sv);
1797
1798 SvREFCNT_inc_NN (coro_sv);
1799 prepare_schedule_to (aTHX_ &ta, next);
1800}
1801
1652static int 1802static int
1653prepare_cede_notself (pTHX_ struct transfer_args *ta) 1803api_cede (pTHX)
1654{ 1804{
1655 if (coro_nready) 1805 struct coro_transfer_args ta;
1656 { 1806
1657 SV *prev = SvRV (coro_current);
1658 prepare_schedule (aTHX_ ta); 1807 prepare_cede (aTHX_ &ta);
1659 api_ready (prev); 1808
1809 if (expect_true (ta.prev != ta.next))
1810 {
1811 TRANSFER (ta, 1);
1660 return 1; 1812 return 1;
1661 } 1813 }
1662 else 1814 else
1663 return 0; 1815 return 0;
1664} 1816}
1665 1817
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 1818static int
1677api_cede (void) 1819api_cede_notself (pTHX)
1678{ 1820{
1679 dTHX; 1821 if (coro_nready)
1822 {
1680 struct transfer_args ta; 1823 struct coro_transfer_args ta;
1681 1824
1682 prepare_cede (aTHX_ &ta); 1825 prepare_cede_notself (aTHX_ &ta);
1683
1684 if (expect_true (ta.prev != ta.next))
1685 {
1686 TRANSFER (ta, 1); 1826 TRANSFER (ta, 1);
1687 return 1; 1827 return 1;
1688 } 1828 }
1689 else 1829 else
1690 return 0; 1830 return 0;
1691} 1831}
1692 1832
1693static int 1833static 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) 1834api_trace (pTHX_ SV *coro_sv, int flags)
1710{ 1835{
1711 dTHX;
1712 struct coro *coro = SvSTATE (coro_sv); 1836 struct coro *coro = SvSTATE (coro_sv);
1837
1838 if (coro->flags & CF_RUNNING)
1839 croak ("cannot enable tracing on a running coroutine, caught");
1713 1840
1714 if (flags & CC_TRACE) 1841 if (flags & CC_TRACE)
1715 { 1842 {
1716 if (!coro->cctx) 1843 if (!coro->cctx)
1717 coro->cctx = cctx_new_run (); 1844 coro->cctx = cctx_new_run ();
1718 else if (!(coro->cctx->flags & CC_TRACE)) 1845 else if (!(coro->cctx->flags & CC_TRACE))
1719 croak ("cannot enable tracing on coroutine with custom stack"); 1846 croak ("cannot enable tracing on coroutine with custom stack, caught");
1720 1847
1721 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1848 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1722 } 1849 }
1723 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1850 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1724 { 1851 {
… …
1729 else 1856 else
1730 coro->slot->runops = RUNOPS_DEFAULT; 1857 coro->slot->runops = RUNOPS_DEFAULT;
1731 } 1858 }
1732} 1859}
1733 1860
1734#if 0 1861static void
1862coro_call_on_destroy (pTHX_ struct coro *coro)
1863{
1864 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1865 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1866
1867 if (on_destroyp)
1868 {
1869 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1870
1871 while (AvFILLp (on_destroy) >= 0)
1872 {
1873 dSP; /* don't disturb outer sp */
1874 SV *cb = av_pop (on_destroy);
1875
1876 PUSHMARK (SP);
1877
1878 if (statusp)
1879 {
1880 int i;
1881 AV *status = (AV *)SvRV (*statusp);
1882 EXTEND (SP, AvFILLp (status) + 1);
1883
1884 for (i = 0; i <= AvFILLp (status); ++i)
1885 PUSHs (AvARRAY (status)[i]);
1886 }
1887
1888 PUTBACK;
1889 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1890 }
1891 }
1892}
1893
1894static void
1895slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1896{
1897 int i;
1898 HV *hv = (HV *)SvRV (coro_current);
1899 AV *av = newAV ();
1900
1901 av_extend (av, items - 1);
1902 for (i = 0; i < items; ++i)
1903 av_push (av, SvREFCNT_inc_NN (arg [i]));
1904
1905 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1906
1907 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1908 api_ready (aTHX_ sv_manager);
1909
1910 frame->prepare = prepare_schedule;
1911 frame->check = slf_check_repeat;
1912
1913 /* as a minor optimisation, we could unwind all stacks here */
1914 /* but that puts extra pressure on pp_slf, and is not worth much */
1915 /*coro_unwind_stacks (aTHX);*/
1916}
1917
1918/*****************************************************************************/
1919/* async pool handler */
1920
1735static int 1921static int
1736coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1922slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1737{ 1923{
1738 AV *padlist; 1924 HV *hv = (HV *)SvRV (coro_current);
1739 AV *av = (AV *)mg->mg_obj; 1925 struct coro *coro = (struct coro *)frame->data;
1740 1926
1741 abort (); 1927 if (!coro->invoke_cb)
1928 return 1; /* loop till we have invoke */
1929 else
1930 {
1931 hv_store (hv, "desc", sizeof ("desc") - 1,
1932 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1933
1934 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1935
1936 {
1937 dSP;
1938 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1939 PUTBACK;
1940 }
1941
1942 SvREFCNT_dec (GvAV (PL_defgv));
1943 GvAV (PL_defgv) = coro->invoke_av;
1944 coro->invoke_av = 0;
1945
1946 return 0;
1947 }
1948}
1949
1950static void
1951slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1952{
1953 HV *hv = (HV *)SvRV (coro_current);
1954 struct coro *coro = SvSTATE_hv ((SV *)hv);
1955
1956 if (expect_true (coro->saved_deffh))
1957 {
1958 /* subsequent iteration */
1959 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1960 coro->saved_deffh = 0;
1961
1962 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1963 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1964 {
1965 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1966 coro->invoke_av = newAV ();
1967
1968 frame->prepare = prepare_nop;
1969 }
1970 else
1971 {
1972 av_clear (GvAV (PL_defgv));
1973 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1974
1975 coro->prio = 0;
1976
1977 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1978 api_trace (aTHX_ coro_current, 0);
1979
1980 frame->prepare = prepare_schedule;
1981 av_push (av_async_pool, SvREFCNT_inc (hv));
1982 }
1983 }
1984 else
1985 {
1986 /* first iteration, simply fall through */
1987 frame->prepare = prepare_nop;
1988 }
1989
1990 frame->check = slf_check_pool_handler;
1991 frame->data = (void *)coro;
1992}
1993
1994/*****************************************************************************/
1995/* rouse callback */
1996
1997#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1998
1999static void
2000coro_rouse_callback (pTHX_ CV *cv)
2001{
2002 dXSARGS;
2003 SV *data = (SV *)GENSUB_ARG;
2004
2005 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2006 {
2007 /* first call, set args */
2008 SV *coro = SvRV (data);
2009 AV *av = newAV ();
2010
2011 SvRV_set (data, (SV *)av);
2012
2013 /* better take a full copy of the arguments */
2014 while (items--)
2015 av_store (av, items, newSVsv (ST (items)));
2016
2017 api_ready (aTHX_ coro);
2018 SvREFCNT_dec (coro);
2019 }
2020
2021 XSRETURN_EMPTY;
2022}
2023
2024static int
2025slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2026{
2027 SV *data = (SV *)frame->data;
2028
2029 if (CORO_THROW)
2030 return 0;
2031
2032 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2033 return 1;
2034
2035 /* now push all results on the stack */
2036 {
2037 dSP;
2038 AV *av = (AV *)SvRV (data);
2039 int i;
2040
2041 EXTEND (SP, AvFILLp (av) + 1);
2042 for (i = 0; i <= AvFILLp (av); ++i)
2043 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2044
2045 /* we have stolen the elements, so set length to zero and free */
2046 AvFILLp (av) = -1;
2047 av_undef (av);
2048
2049 PUTBACK;
2050 }
1742 2051
1743 return 0; 2052 return 0;
1744} 2053}
1745 2054
1746static MGVTBL coro_gensub_vtbl = { 2055static void
1747 0, 0, 0, 0, 2056slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1748 coro_gensub_free 2057{
1749}; 2058 SV *cb;
1750#endif 2059
2060 if (items)
2061 cb = arg [0];
2062 else
2063 {
2064 struct coro *coro = SvSTATE_current;
2065
2066 if (!coro->rouse_cb)
2067 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2068
2069 cb = sv_2mortal (coro->rouse_cb);
2070 coro->rouse_cb = 0;
2071 }
2072
2073 if (!SvROK (cb)
2074 || SvTYPE (SvRV (cb)) != SVt_PVCV
2075 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2076 croak ("Coro::rouse_wait called with illegal callback argument,");
2077
2078 {
2079 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2080 SV *data = (SV *)GENSUB_ARG;
2081
2082 frame->data = (void *)data;
2083 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2084 frame->check = slf_check_rouse_wait;
2085 }
2086}
2087
2088static SV *
2089coro_new_rouse_cb (pTHX)
2090{
2091 HV *hv = (HV *)SvRV (coro_current);
2092 struct coro *coro = SvSTATE_hv (hv);
2093 SV *data = newRV_inc ((SV *)hv);
2094 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2095
2096 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2097 SvREFCNT_dec (data); /* magicext increases the refcount */
2098
2099 SvREFCNT_dec (coro->rouse_cb);
2100 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2101
2102 return cb;
2103}
2104
2105/*****************************************************************************/
2106/* schedule-like-function opcode (SLF) */
2107
2108static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2109static const CV *slf_cv;
2110static SV **slf_argv;
2111static int slf_argc, slf_arga; /* count, allocated */
2112static I32 slf_ax; /* top of stack, for restore */
2113
2114/* this restores the stack in the case we patched the entersub, to */
2115/* recreate the stack frame as perl will on following calls */
2116/* since entersub cleared the stack */
2117static OP *
2118pp_restore (pTHX)
2119{
2120 int i;
2121 SV **SP = PL_stack_base + slf_ax;
2122
2123 PUSHMARK (SP);
2124
2125 EXTEND (SP, slf_argc + 1);
2126
2127 for (i = 0; i < slf_argc; ++i)
2128 PUSHs (sv_2mortal (slf_argv [i]));
2129
2130 PUSHs ((SV *)CvGV (slf_cv));
2131
2132 RETURNOP (slf_restore.op_first);
2133}
2134
2135static void
2136slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2137{
2138 SV **arg = (SV **)slf_frame.data;
2139
2140 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2141}
2142
2143static void
2144slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2145{
2146 if (items != 2)
2147 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2148
2149 frame->prepare = slf_prepare_transfer;
2150 frame->check = slf_check_nop;
2151 frame->data = (void *)arg; /* let's hope it will stay valid */
2152}
2153
2154static void
2155slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2156{
2157 frame->prepare = prepare_schedule;
2158 frame->check = slf_check_nop;
2159}
2160
2161static void
2162slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2163{
2164 struct coro *next = (struct coro *)slf_frame.data;
2165
2166 SvREFCNT_inc_NN (next->hv);
2167 prepare_schedule_to (aTHX_ ta, next);
2168}
2169
2170static void
2171slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2172{
2173 if (!items)
2174 croak ("Coro::schedule_to expects a coroutine argument, caught");
2175
2176 frame->data = (void *)SvSTATE (arg [0]);
2177 frame->prepare = slf_prepare_schedule_to;
2178 frame->check = slf_check_nop;
2179}
2180
2181static void
2182slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2183{
2184 api_ready (aTHX_ SvRV (coro_current));
2185
2186 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2187}
2188
2189static void
2190slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2191{
2192 frame->prepare = prepare_cede;
2193 frame->check = slf_check_nop;
2194}
2195
2196static void
2197slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2198{
2199 frame->prepare = prepare_cede_notself;
2200 frame->check = slf_check_nop;
2201}
2202
2203/*
2204 * these not obviously related functions are all rolled into one
2205 * function to increase chances that they all will call transfer with the same
2206 * stack offset
2207 * SLF stands for "schedule-like-function".
2208 */
2209static OP *
2210pp_slf (pTHX)
2211{
2212 I32 checkmark; /* mark SP to see how many elements check has pushed */
2213
2214 /* set up the slf frame, unless it has already been set-up */
2215 /* the latter happens when a new coro has been started */
2216 /* or when a new cctx was attached to an existing coroutine */
2217 if (expect_true (!slf_frame.prepare))
2218 {
2219 /* first iteration */
2220 dSP;
2221 SV **arg = PL_stack_base + TOPMARK + 1;
2222 int items = SP - arg; /* args without function object */
2223 SV *gv = *sp;
2224
2225 /* do a quick consistency check on the "function" object, and if it isn't */
2226 /* for us, divert to the real entersub */
2227 if (SvTYPE (gv) != SVt_PVGV
2228 || !GvCV (gv)
2229 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2230 return PL_ppaddr[OP_ENTERSUB](aTHX);
2231
2232 if (!(PL_op->op_flags & OPf_STACKED))
2233 {
2234 /* ampersand-form of call, use @_ instead of stack */
2235 AV *av = GvAV (PL_defgv);
2236 arg = AvARRAY (av);
2237 items = AvFILLp (av) + 1;
2238 }
2239
2240 /* now call the init function, which needs to set up slf_frame */
2241 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2242 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2243
2244 /* pop args */
2245 SP = PL_stack_base + POPMARK;
2246
2247 PUTBACK;
2248 }
2249
2250 /* now that we have a slf_frame, interpret it! */
2251 /* we use a callback system not to make the code needlessly */
2252 /* complicated, but so we can run multiple perl coros from one cctx */
2253
2254 do
2255 {
2256 struct coro_transfer_args ta;
2257
2258 slf_frame.prepare (aTHX_ &ta);
2259 TRANSFER (ta, 0);
2260
2261 checkmark = PL_stack_sp - PL_stack_base;
2262 }
2263 while (slf_frame.check (aTHX_ &slf_frame));
2264
2265 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2266
2267 /* exception handling */
2268 if (expect_false (CORO_THROW))
2269 {
2270 SV *exception = sv_2mortal (CORO_THROW);
2271
2272 CORO_THROW = 0;
2273 sv_setsv (ERRSV, exception);
2274 croak (0);
2275 }
2276
2277 /* return value handling - mostly like entersub */
2278 /* make sure we put something on the stack in scalar context */
2279 if (GIMME_V == G_SCALAR)
2280 {
2281 dSP;
2282 SV **bot = PL_stack_base + checkmark;
2283
2284 if (sp == bot) /* too few, push undef */
2285 bot [1] = &PL_sv_undef;
2286 else if (sp != bot + 1) /* too many, take last one */
2287 bot [1] = *sp;
2288
2289 SP = bot + 1;
2290
2291 PUTBACK;
2292 }
2293
2294 return NORMAL;
2295}
2296
2297static void
2298api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2299{
2300 int i;
2301 SV **arg = PL_stack_base + ax;
2302 int items = PL_stack_sp - arg + 1;
2303
2304 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2305
2306 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2307 && PL_op->op_ppaddr != pp_slf)
2308 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2309
2310 CvFLAGS (cv) |= CVf_SLF;
2311 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2312 slf_cv = cv;
2313
2314 /* we patch the op, and then re-run the whole call */
2315 /* we have to put the same argument on the stack for this to work */
2316 /* and this will be done by pp_restore */
2317 slf_restore.op_next = (OP *)&slf_restore;
2318 slf_restore.op_type = OP_CUSTOM;
2319 slf_restore.op_ppaddr = pp_restore;
2320 slf_restore.op_first = PL_op;
2321
2322 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2323
2324 if (PL_op->op_flags & OPf_STACKED)
2325 {
2326 if (items > slf_arga)
2327 {
2328 slf_arga = items;
2329 free (slf_argv);
2330 slf_argv = malloc (slf_arga * sizeof (SV *));
2331 }
2332
2333 slf_argc = items;
2334
2335 for (i = 0; i < items; ++i)
2336 slf_argv [i] = SvREFCNT_inc (arg [i]);
2337 }
2338 else
2339 slf_argc = 0;
2340
2341 PL_op->op_ppaddr = pp_slf;
2342 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2343
2344 PL_op = (OP *)&slf_restore;
2345}
2346
2347/*****************************************************************************/
2348/* dynamic wind */
2349
2350static void
2351on_enterleave_call (pTHX_ SV *cb)
2352{
2353 dSP;
2354
2355 PUSHSTACK;
2356
2357 PUSHMARK (SP);
2358 PUTBACK;
2359 call_sv (cb, G_VOID | G_DISCARD);
2360 SPAGAIN;
2361
2362 POPSTACK;
2363}
2364
2365static SV *
2366coro_avp_pop_and_free (pTHX_ AV **avp)
2367{
2368 AV *av = *avp;
2369 SV *res = av_pop (av);
2370
2371 if (AvFILLp (av) < 0)
2372 {
2373 *avp = 0;
2374 SvREFCNT_dec (av);
2375 }
2376
2377 return res;
2378}
2379
2380static void
2381coro_pop_on_enter (pTHX_ void *coro)
2382{
2383 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2384 SvREFCNT_dec (cb);
2385}
2386
2387static void
2388coro_pop_on_leave (pTHX_ void *coro)
2389{
2390 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2391 on_enterleave_call (aTHX_ sv_2mortal (cb));
2392}
1751 2393
1752/*****************************************************************************/ 2394/*****************************************************************************/
1753/* PerlIO::cede */ 2395/* PerlIO::cede */
1754 2396
1755typedef struct 2397typedef struct
… …
1783 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2425 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1784 double now = nvtime (); 2426 double now = nvtime ();
1785 2427
1786 if (now >= self->next) 2428 if (now >= self->next)
1787 { 2429 {
1788 api_cede (); 2430 api_cede (aTHX);
1789 self->next = now + self->every; 2431 self->next = now + self->every;
1790 } 2432 }
1791 2433
1792 return PerlIOBuf_flush (aTHX_ f); 2434 return PerlIOBuf_flush (aTHX_ f);
1793} 2435}
… …
1823 PerlIOBuf_get_cnt, 2465 PerlIOBuf_get_cnt,
1824 PerlIOBuf_set_ptrcnt, 2466 PerlIOBuf_set_ptrcnt,
1825}; 2467};
1826 2468
1827/*****************************************************************************/ 2469/*****************************************************************************/
2470/* Coro::Semaphore & Coro::Signal */
1828 2471
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 * 2472static SV *
1839pp_restore (pTHX) 2473coro_waitarray_new (pTHX_ int count)
1840{ 2474{
2475 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2476 AV *av = newAV ();
2477 SV **ary;
2478
2479 /* unfortunately, building manually saves memory */
2480 Newx (ary, 2, SV *);
2481 AvALLOC (av) = ary;
2482#if PERL_VERSION_ATLEAST (5,10,0)
2483 AvARRAY (av) = ary;
2484#else
2485 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2486 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2487 SvPVX ((SV *)av) = (char *)ary;
2488#endif
2489 AvMAX (av) = 1;
2490 AvFILLp (av) = 0;
2491 ary [0] = newSViv (count);
2492
2493 return newRV_noinc ((SV *)av);
2494}
2495
2496/* semaphore */
2497
2498static void
2499coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2500{
2501 SV *count_sv = AvARRAY (av)[0];
2502 IV count = SvIVX (count_sv);
2503
2504 count += adjust;
2505 SvIVX (count_sv) = count;
2506
2507 /* now wake up as many waiters as are expected to lock */
2508 while (count > 0 && AvFILLp (av) > 0)
2509 {
2510 SV *cb;
2511
2512 /* swap first two elements so we can shift a waiter */
2513 AvARRAY (av)[0] = AvARRAY (av)[1];
2514 AvARRAY (av)[1] = count_sv;
2515 cb = av_shift (av);
2516
2517 if (SvOBJECT (cb))
2518 {
2519 api_ready (aTHX_ cb);
2520 --count;
2521 }
2522 else if (SvTYPE (cb) == SVt_PVCV)
2523 {
2524 dSP;
2525 PUSHMARK (SP);
2526 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2527 PUTBACK;
2528 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2529 }
2530
2531 SvREFCNT_dec (cb);
2532 }
2533}
2534
2535static void
2536coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2537{
2538 /* call $sem->adjust (0) to possibly wake up some other waiters */
2539 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2540}
2541
2542static int
2543slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2544{
2545 AV *av = (AV *)frame->data;
2546 SV *count_sv = AvARRAY (av)[0];
2547
2548 /* if we are about to throw, don't actually acquire the lock, just throw */
2549 if (CORO_THROW)
2550 return 0;
2551 else if (SvIVX (count_sv) > 0)
2552 {
2553 SvSTATE_current->on_destroy = 0;
2554
2555 if (acquire)
2556 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2557 else
2558 coro_semaphore_adjust (aTHX_ av, 0);
2559
2560 return 0;
2561 }
2562 else
2563 {
2564 int i;
2565 /* if we were woken up but can't down, we look through the whole */
2566 /* waiters list and only add us if we aren't in there already */
2567 /* this avoids some degenerate memory usage cases */
2568
2569 for (i = 1; i <= AvFILLp (av); ++i)
2570 if (AvARRAY (av)[i] == SvRV (coro_current))
2571 return 1;
2572
2573 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2574 return 1;
2575 }
2576}
2577
2578static int
2579slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2580{
2581 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2582}
2583
2584static int
2585slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2586{
2587 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2588}
2589
2590static void
2591slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2592{
2593 AV *av = (AV *)SvRV (arg [0]);
2594
2595 if (SvIVX (AvARRAY (av)[0]) > 0)
2596 {
2597 frame->data = (void *)av;
2598 frame->prepare = prepare_nop;
2599 }
2600 else
2601 {
2602 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2603
2604 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2605 frame->prepare = prepare_schedule;
2606
2607 /* to avoid race conditions when a woken-up coro gets terminated */
2608 /* we arrange for a temporary on_destroy that calls adjust (0) */
2609 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2610 }
2611}
2612
2613static void
2614slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2615{
2616 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2617 frame->check = slf_check_semaphore_down;
2618}
2619
2620static void
2621slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2622{
2623 if (items >= 2)
2624 {
2625 /* callback form */
2626 AV *av = (AV *)SvRV (arg [0]);
2627 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2628
2629 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2630
2631 if (SvIVX (AvARRAY (av)[0]) > 0)
2632 coro_semaphore_adjust (aTHX_ av, 0);
2633
2634 frame->prepare = prepare_nop;
2635 frame->check = slf_check_nop;
2636 }
2637 else
2638 {
2639 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2640 frame->check = slf_check_semaphore_wait;
2641 }
2642}
2643
2644/* signal */
2645
2646static void
2647coro_signal_wake (pTHX_ AV *av, int count)
2648{
2649 SvIVX (AvARRAY (av)[0]) = 0;
2650
2651 /* now signal count waiters */
2652 while (count > 0 && AvFILLp (av) > 0)
2653 {
2654 SV *cb;
2655
2656 /* swap first two elements so we can shift a waiter */
2657 cb = AvARRAY (av)[0];
2658 AvARRAY (av)[0] = AvARRAY (av)[1];
2659 AvARRAY (av)[1] = cb;
2660
2661 cb = av_shift (av);
2662
2663 api_ready (aTHX_ cb);
2664 sv_setiv (cb, 0); /* signal waiter */
2665 SvREFCNT_dec (cb);
2666
2667 --count;
2668 }
2669}
2670
2671static int
2672slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2673{
2674 /* if we are about to throw, also stop waiting */
2675 return SvROK ((SV *)frame->data) && !CORO_THROW;
2676}
2677
2678static void
2679slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2680{
2681 AV *av = (AV *)SvRV (arg [0]);
2682
2683 if (SvIVX (AvARRAY (av)[0]))
2684 {
2685 SvIVX (AvARRAY (av)[0]) = 0;
2686 frame->prepare = prepare_nop;
2687 frame->check = slf_check_nop;
2688 }
2689 else
2690 {
2691 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2692
2693 av_push (av, waiter);
2694
2695 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2696 frame->prepare = prepare_schedule;
2697 frame->check = slf_check_signal_wait;
2698 }
2699}
2700
2701/*****************************************************************************/
2702/* Coro::AIO */
2703
2704#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2705
2706/* helper storage struct */
2707struct io_state
2708{
2709 int errorno;
2710 I32 laststype; /* U16 in 5.10.0 */
2711 int laststatval;
2712 Stat_t statcache;
2713};
2714
2715static void
2716coro_aio_callback (pTHX_ CV *cv)
2717{
2718 dXSARGS;
2719 AV *state = (AV *)GENSUB_ARG;
2720 SV *coro = av_pop (state);
2721 SV *data_sv = newSV (sizeof (struct io_state));
2722
2723 av_extend (state, items - 1);
2724
2725 sv_upgrade (data_sv, SVt_PV);
2726 SvCUR_set (data_sv, sizeof (struct io_state));
2727 SvPOK_only (data_sv);
2728
2729 {
2730 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2731
2732 data->errorno = errno;
2733 data->laststype = PL_laststype;
2734 data->laststatval = PL_laststatval;
2735 data->statcache = PL_statcache;
2736 }
2737
2738 /* now build the result vector out of all the parameters and the data_sv */
2739 {
2740 int i;
2741
2742 for (i = 0; i < items; ++i)
2743 av_push (state, SvREFCNT_inc_NN (ST (i)));
2744 }
2745
2746 av_push (state, data_sv);
2747
2748 api_ready (aTHX_ coro);
2749 SvREFCNT_dec (coro);
2750 SvREFCNT_dec ((AV *)state);
2751}
2752
2753static int
2754slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2755{
2756 AV *state = (AV *)frame->data;
2757
2758 /* if we are about to throw, return early */
2759 /* this does not cancel the aio request, but at least */
2760 /* it quickly returns */
2761 if (CORO_THROW)
2762 return 0;
2763
2764 /* one element that is an RV? repeat! */
2765 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2766 return 1;
2767
2768 /* restore status */
2769 {
2770 SV *data_sv = av_pop (state);
2771 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2772
2773 errno = data->errorno;
2774 PL_laststype = data->laststype;
2775 PL_laststatval = data->laststatval;
2776 PL_statcache = data->statcache;
2777
2778 SvREFCNT_dec (data_sv);
2779 }
2780
2781 /* push result values */
2782 {
1841 dSP; 2783 dSP;
2784 int i;
1842 2785
2786 EXTEND (SP, AvFILLp (state) + 1);
2787 for (i = 0; i <= AvFILLp (state); ++i)
2788 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2789
2790 PUTBACK;
2791 }
2792
2793 return 0;
2794}
2795
2796static void
2797slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2798{
2799 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2800 SV *coro_hv = SvRV (coro_current);
2801 struct coro *coro = SvSTATE_hv (coro_hv);
2802
2803 /* put our coroutine id on the state arg */
2804 av_push (state, SvREFCNT_inc_NN (coro_hv));
2805
2806 /* first see whether we have a non-zero priority and set it as AIO prio */
2807 if (coro->prio)
2808 {
2809 dSP;
2810
2811 static SV *prio_cv;
2812 static SV *prio_sv;
2813
2814 if (expect_false (!prio_cv))
2815 {
2816 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2817 prio_sv = newSViv (0);
2818 }
2819
2820 PUSHMARK (SP);
2821 sv_setiv (prio_sv, coro->prio);
2822 XPUSHs (prio_sv);
2823
2824 PUTBACK;
2825 call_sv (prio_cv, G_VOID | G_DISCARD);
2826 }
2827
2828 /* now call the original request */
2829 {
2830 dSP;
2831 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2832 int i;
2833
1843 PUSHMARK (SP); 2834 PUSHMARK (SP);
1844 2835
1845 EXTEND (SP, 3); 2836 /* first push all args to the stack */
1846 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2837 EXTEND (SP, items + 1);
1847 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1848 PUSHs ((SV *)CvGV (ssl_cv));
1849 2838
1850 RETURNOP (ssl_restore.op_first); 2839 for (i = 0; i < items; ++i)
1851} 2840 PUSHs (arg [i]);
1852 2841
1853/* declare prototype */ 2842 /* now push the callback closure */
1854XS(XS_Coro__State__set_stacklevel); 2843 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1855 2844
1856static OP * 2845 /* 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; 2846 PUTBACK;
1881 switch (PL_op->op_private & 7) 2847 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 } 2848 }
1908 2849
1909 TRANSFER (ta, 0); 2850 /* now that the requets is going, we loop toll we have a result */
1910 SPAGAIN; 2851 frame->data = (void *)state;
1911 2852 frame->prepare = prepare_schedule;
1912skip: 2853 frame->check = slf_check_aio_req;
1913 PUTBACK;
1914 SSL_TAIL;
1915 SPAGAIN;
1916 RETURN;
1917} 2854}
2855
2856static void
2857coro_aio_req_xs (pTHX_ CV *cv)
2858{
2859 dXSARGS;
2860
2861 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2862
2863 XSRETURN_EMPTY;
2864}
2865
2866/*****************************************************************************/
2867
2868#if CORO_CLONE
2869# include "clone.c"
2870#endif
1918 2871
1919MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2872MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1920 2873
1921PROTOTYPES: DISABLE 2874PROTOTYPES: DISABLE
1922 2875
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: 2876BOOT:
1955{ 2877{
1956#ifdef USE_ITHREADS 2878#ifdef USE_ITHREADS
1957 MUTEX_INIT (&coro_lock);
1958# if CORO_PTHREAD 2879# if CORO_PTHREAD
1959 coro_thx = PERL_GET_CONTEXT; 2880 coro_thx = PERL_GET_CONTEXT;
1960# endif 2881# endif
1961#endif 2882#endif
1962 BOOT_PAGESIZE; 2883 BOOT_PAGESIZE;
1963 2884
1964 ssl_cv = get_cv ("Coro::State::_set_stacklevel", 0); 2885 cctx_current = cctx_new_empty ();
1965 2886
1966 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2887 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1967 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2888 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1968 2889
1969 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2890 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1985 main_top_env = PL_top_env; 2906 main_top_env = PL_top_env;
1986 2907
1987 while (main_top_env->je_prev) 2908 while (main_top_env->je_prev)
1988 main_top_env = main_top_env->je_prev; 2909 main_top_env = main_top_env->je_prev;
1989 2910
2911 {
2912 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2913
2914 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2915 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2916
2917 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2918 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2919 }
2920
1990 coroapi.ver = CORO_API_VERSION; 2921 coroapi.ver = CORO_API_VERSION;
1991 coroapi.rev = CORO_API_REVISION; 2922 coroapi.rev = CORO_API_REVISION;
2923
1992 coroapi.transfer = api_transfer; 2924 coroapi.transfer = api_transfer;
2925
2926 coroapi.sv_state = SvSTATE_;
2927 coroapi.execute_slf = api_execute_slf;
2928 coroapi.prepare_nop = prepare_nop;
2929 coroapi.prepare_schedule = prepare_schedule;
2930 coroapi.prepare_cede = prepare_cede;
2931 coroapi.prepare_cede_notself = prepare_cede_notself;
1993 2932
1994 { 2933 {
1995 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2934 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1996 2935
1997 if (!svp) croak ("Time::HiRes is required"); 2936 if (!svp) croak ("Time::HiRes is required");
… …
2003 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2942 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2004} 2943}
2005 2944
2006SV * 2945SV *
2007new (char *klass, ...) 2946new (char *klass, ...)
2947 ALIAS:
2948 Coro::new = 1
2008 CODE: 2949 CODE:
2009{ 2950{
2010 struct coro *coro; 2951 struct coro *coro;
2011 MAGIC *mg; 2952 MAGIC *mg;
2012 HV *hv; 2953 HV *hv;
2954 CV *cb;
2013 int i; 2955 int i;
2956
2957 if (items > 1)
2958 {
2959 cb = coro_sv_2cv (aTHX_ ST (1));
2960
2961 if (!ix)
2962 {
2963 if (CvISXSUB (cb))
2964 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2965
2966 if (!CvROOT (cb))
2967 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2968 }
2969 }
2014 2970
2015 Newz (0, coro, 1, struct coro); 2971 Newz (0, coro, 1, struct coro);
2016 coro->args = newAV (); 2972 coro->args = newAV ();
2017 coro->flags = CF_NEW; 2973 coro->flags = CF_NEW;
2018 2974
… …
2023 coro->hv = hv = newHV (); 2979 coro->hv = hv = newHV ();
2024 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2980 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2025 mg->mg_flags |= MGf_DUP; 2981 mg->mg_flags |= MGf_DUP;
2026 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2982 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2027 2983
2984 if (items > 1)
2985 {
2028 av_extend (coro->args, items - 1); 2986 av_extend (coro->args, items - 1 + ix - 1);
2987
2988 if (ix)
2989 {
2990 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2991 cb = cv_coro_run;
2992 }
2993
2994 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2995
2029 for (i = 1; i < items; i++) 2996 for (i = 2; i < items; i++)
2030 av_push (coro->args, newSVsv (ST (i))); 2997 av_push (coro->args, newSVsv (ST (i)));
2998 }
2031} 2999}
2032 OUTPUT: 3000 OUTPUT:
2033 RETVAL 3001 RETVAL
3002
3003void
3004transfer (...)
3005 PROTOTYPE: $$
3006 CODE:
3007 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2034 3008
2035bool 3009bool
2036_destroy (SV *coro_sv) 3010_destroy (SV *coro_sv)
2037 CODE: 3011 CODE:
2038 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3012 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2043_exit (int code) 3017_exit (int code)
2044 PROTOTYPE: $ 3018 PROTOTYPE: $
2045 CODE: 3019 CODE:
2046 _exit (code); 3020 _exit (code);
2047 3021
3022SV *
3023clone (Coro::State coro)
3024 CODE:
3025{
3026#if CORO_CLONE
3027 struct coro *ncoro = coro_clone (aTHX_ coro);
3028 MAGIC *mg;
3029 /* TODO: too much duplication */
3030 ncoro->hv = newHV ();
3031 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3032 mg->mg_flags |= MGf_DUP;
3033 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3034#else
3035 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3036#endif
3037}
3038 OUTPUT:
3039 RETVAL
3040
2048int 3041int
2049cctx_stacksize (int new_stacksize = 0) 3042cctx_stacksize (int new_stacksize = 0)
3043 PROTOTYPE: ;$
2050 CODE: 3044 CODE:
2051 RETVAL = cctx_stacksize; 3045 RETVAL = cctx_stacksize;
2052 if (new_stacksize) 3046 if (new_stacksize)
2053 { 3047 {
2054 cctx_stacksize = new_stacksize; 3048 cctx_stacksize = new_stacksize;
… …
2057 OUTPUT: 3051 OUTPUT:
2058 RETVAL 3052 RETVAL
2059 3053
2060int 3054int
2061cctx_max_idle (int max_idle = 0) 3055cctx_max_idle (int max_idle = 0)
3056 PROTOTYPE: ;$
2062 CODE: 3057 CODE:
2063 RETVAL = cctx_max_idle; 3058 RETVAL = cctx_max_idle;
2064 if (max_idle > 1) 3059 if (max_idle > 1)
2065 cctx_max_idle = max_idle; 3060 cctx_max_idle = max_idle;
2066 OUTPUT: 3061 OUTPUT:
2067 RETVAL 3062 RETVAL
2068 3063
2069int 3064int
2070cctx_count () 3065cctx_count ()
3066 PROTOTYPE:
2071 CODE: 3067 CODE:
2072 RETVAL = cctx_count; 3068 RETVAL = cctx_count;
2073 OUTPUT: 3069 OUTPUT:
2074 RETVAL 3070 RETVAL
2075 3071
2076int 3072int
2077cctx_idle () 3073cctx_idle ()
3074 PROTOTYPE:
2078 CODE: 3075 CODE:
2079 RETVAL = cctx_idle; 3076 RETVAL = cctx_idle;
2080 OUTPUT: 3077 OUTPUT:
2081 RETVAL 3078 RETVAL
2082 3079
2083void 3080void
2084list () 3081list ()
3082 PROTOTYPE:
2085 PPCODE: 3083 PPCODE:
2086{ 3084{
2087 struct coro *coro; 3085 struct coro *coro;
2088 for (coro = coro_first; coro; coro = coro->next) 3086 for (coro = coro_first; coro; coro = coro->next)
2089 if (coro->hv) 3087 if (coro->hv)
… …
2096 eval = 1 3094 eval = 1
2097 CODE: 3095 CODE:
2098{ 3096{
2099 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3097 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2100 { 3098 {
2101 struct coro temp; 3099 struct coro *current = SvSTATE_current;
2102 3100
2103 if (!(coro->flags & CF_RUNNING)) 3101 if (current != coro)
2104 { 3102 {
2105 PUTBACK; 3103 PUTBACK;
2106 save_perl (aTHX_ &temp); 3104 save_perl (aTHX_ current);
2107 load_perl (aTHX_ coro); 3105 load_perl (aTHX_ coro);
3106 SPAGAIN;
2108 } 3107 }
2109 3108
2110 {
2111 dSP;
2112 ENTER;
2113 SAVETMPS;
2114 PUTBACK;
2115 PUSHSTACK; 3109 PUSHSTACK;
3110
2116 PUSHMARK (SP); 3111 PUSHMARK (SP);
3112 PUTBACK;
2117 3113
2118 if (ix) 3114 if (ix)
2119 eval_sv (coderef, 0); 3115 eval_sv (coderef, 0);
2120 else 3116 else
2121 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3117 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2122 3118
2123 POPSTACK; 3119 POPSTACK;
2124 SPAGAIN; 3120 SPAGAIN;
2125 FREETMPS;
2126 LEAVE;
2127 PUTBACK;
2128 }
2129 3121
2130 if (!(coro->flags & CF_RUNNING)) 3122 if (current != coro)
2131 { 3123 {
3124 PUTBACK;
2132 save_perl (aTHX_ coro); 3125 save_perl (aTHX_ coro);
2133 load_perl (aTHX_ &temp); 3126 load_perl (aTHX_ current);
2134 SPAGAIN; 3127 SPAGAIN;
2135 } 3128 }
2136 } 3129 }
2137} 3130}
2138 3131
… …
2142 ALIAS: 3135 ALIAS:
2143 is_ready = CF_READY 3136 is_ready = CF_READY
2144 is_running = CF_RUNNING 3137 is_running = CF_RUNNING
2145 is_new = CF_NEW 3138 is_new = CF_NEW
2146 is_destroyed = CF_DESTROYED 3139 is_destroyed = CF_DESTROYED
3140 is_suspended = CF_SUSPENDED
2147 CODE: 3141 CODE:
2148 RETVAL = boolSV (coro->flags & ix); 3142 RETVAL = boolSV (coro->flags & ix);
2149 OUTPUT: 3143 OUTPUT:
2150 RETVAL 3144 RETVAL
2151 3145
2152void 3146void
2153throw (Coro::State self, SV *throw = &PL_sv_undef) 3147throw (Coro::State self, SV *throw = &PL_sv_undef)
2154 PROTOTYPE: $;$ 3148 PROTOTYPE: $;$
2155 CODE: 3149 CODE:
3150{
3151 struct coro *current = SvSTATE_current;
3152 SV **throwp = self == current ? &CORO_THROW : &self->except;
2156 SvREFCNT_dec (self->throw); 3153 SvREFCNT_dec (*throwp);
2157 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3154 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3155}
2158 3156
2159void 3157void
2160api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3158api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3159 PROTOTYPE: $;$
3160 C_ARGS: aTHX_ coro, flags
2161 3161
2162SV * 3162SV *
2163has_cctx (Coro::State coro) 3163has_cctx (Coro::State coro)
2164 PROTOTYPE: $ 3164 PROTOTYPE: $
2165 CODE: 3165 CODE:
2166 RETVAL = boolSV (!!coro->cctx); 3166 /* maybe manage the running flag differently */
3167 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2167 OUTPUT: 3168 OUTPUT:
2168 RETVAL 3169 RETVAL
2169 3170
2170int 3171int
2171is_traced (Coro::State coro) 3172is_traced (Coro::State coro)
… …
2189 OUTPUT: 3190 OUTPUT:
2190 RETVAL 3191 RETVAL
2191 3192
2192void 3193void
2193force_cctx () 3194force_cctx ()
3195 PROTOTYPE:
2194 CODE: 3196 CODE:
2195 struct coro *coro = SvSTATE (coro_current);
2196 coro->cctx->idle_sp = 0; 3197 cctx_current->idle_sp = 0;
2197 3198
2198void 3199void
2199swap_defsv (Coro::State self) 3200swap_defsv (Coro::State self)
2200 PROTOTYPE: $ 3201 PROTOTYPE: $
2201 ALIAS: 3202 ALIAS:
2202 swap_defav = 1 3203 swap_defav = 1
2203 CODE: 3204 CODE:
2204 if (!self->slot) 3205 if (!self->slot)
2205 croak ("cannot swap state with coroutine that has no saved state"); 3206 croak ("cannot swap state with coroutine that has no saved state,");
2206 else 3207 else
2207 { 3208 {
2208 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3209 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2209 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3210 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2210 3211
2211 SV *tmp = *src; *src = *dst; *dst = tmp; 3212 SV *tmp = *src; *src = *dst; *dst = tmp;
2212 } 3213 }
2213 3214
3215void
3216cancel (Coro::State self)
3217 CODE:
3218 coro_state_destroy (aTHX_ self);
3219 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3220
3221
2214MODULE = Coro::State PACKAGE = Coro 3222MODULE = Coro::State PACKAGE = Coro
2215 3223
2216BOOT: 3224BOOT:
2217{ 3225{
2218 int i;
2219
2220 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2221 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3226 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2222 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3227 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2223 3228 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3229 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2224 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3230 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2225 SvREADONLY_on (coro_current); 3231 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3232 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3233 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3234 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3235
3236 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3237 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3238 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3239 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2226 3240
2227 coro_stash = gv_stashpv ("Coro", TRUE); 3241 coro_stash = gv_stashpv ("Coro", TRUE);
2228 3242
2229 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3243 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2230 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3244 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
2231 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3245 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
2232 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3246 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
2233 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3247 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
2234 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3248 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
2235 3249
2236 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2237 coro_ready[i] = newAV ();
2238
2239 { 3250 {
2240 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3251 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2241 3252
2242 coroapi.schedule = api_schedule; 3253 coroapi.schedule = api_schedule;
3254 coroapi.schedule_to = api_schedule_to;
2243 coroapi.cede = api_cede; 3255 coroapi.cede = api_cede;
2244 coroapi.cede_notself = api_cede_notself; 3256 coroapi.cede_notself = api_cede_notself;
2245 coroapi.ready = api_ready; 3257 coroapi.ready = api_ready;
2246 coroapi.is_ready = api_is_ready; 3258 coroapi.is_ready = api_is_ready;
2247 coroapi.nready = &coro_nready; 3259 coroapi.nready = coro_nready;
2248 coroapi.current = coro_current; 3260 coroapi.current = coro_current;
2249 3261
2250 GCoroAPI = &coroapi; 3262 /*GCoroAPI = &coroapi;*/
2251 sv_setiv (sv, (IV)&coroapi); 3263 sv_setiv (sv, (IV)&coroapi);
2252 SvREADONLY_on (sv); 3264 SvREADONLY_on (sv);
2253 } 3265 }
2254} 3266}
3267
3268void
3269terminate (...)
3270 CODE:
3271 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3272
3273void
3274schedule (...)
3275 CODE:
3276 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3277
3278void
3279schedule_to (...)
3280 CODE:
3281 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3282
3283void
3284cede_to (...)
3285 CODE:
3286 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3287
3288void
3289cede (...)
3290 CODE:
3291 CORO_EXECUTE_SLF_XS (slf_init_cede);
3292
3293void
3294cede_notself (...)
3295 CODE:
3296 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2255 3297
2256void 3298void
2257_set_current (SV *current) 3299_set_current (SV *current)
2258 PROTOTYPE: $ 3300 PROTOTYPE: $
2259 CODE: 3301 CODE:
… …
2262 3304
2263void 3305void
2264_set_readyhook (SV *hook) 3306_set_readyhook (SV *hook)
2265 PROTOTYPE: $ 3307 PROTOTYPE: $
2266 CODE: 3308 CODE:
2267 LOCK;
2268 SvREFCNT_dec (coro_readyhook); 3309 SvREFCNT_dec (coro_readyhook);
2269 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3310 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2270 UNLOCK;
2271 3311
2272int 3312int
2273prio (Coro::State coro, int newprio = 0) 3313prio (Coro::State coro, int newprio = 0)
3314 PROTOTYPE: $;$
2274 ALIAS: 3315 ALIAS:
2275 nice = 1 3316 nice = 1
2276 CODE: 3317 CODE:
2277{ 3318{
2278 RETVAL = coro->prio; 3319 RETVAL = coro->prio;
… …
2293 3334
2294SV * 3335SV *
2295ready (SV *self) 3336ready (SV *self)
2296 PROTOTYPE: $ 3337 PROTOTYPE: $
2297 CODE: 3338 CODE:
2298 RETVAL = boolSV (api_ready (self)); 3339 RETVAL = boolSV (api_ready (aTHX_ self));
2299 OUTPUT: 3340 OUTPUT:
2300 RETVAL 3341 RETVAL
2301 3342
2302int 3343int
2303nready (...) 3344nready (...)
… …
2305 CODE: 3346 CODE:
2306 RETVAL = coro_nready; 3347 RETVAL = coro_nready;
2307 OUTPUT: 3348 OUTPUT:
2308 RETVAL 3349 RETVAL
2309 3350
2310# for async_pool speedup
2311void 3351void
2312_pool_1 (SV *cb) 3352suspend (Coro::State self)
3353 PROTOTYPE: $
2313 CODE: 3354 CODE:
2314{ 3355 self->flags |= CF_SUSPENDED;
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 3356
2322 if (!invoke) 3357void
3358resume (Coro::State self)
3359 PROTOTYPE: $
3360 CODE:
3361 self->flags &= ~CF_SUSPENDED;
3362
3363void
3364_pool_handler (...)
3365 CODE:
3366 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3367
3368void
3369async_pool (SV *cv, ...)
3370 PROTOTYPE: &@
3371 PPCODE:
3372{
3373 HV *hv = (HV *)av_pop (av_async_pool);
3374 AV *av = newAV ();
3375 SV *cb = ST (0);
3376 int i;
3377
3378 av_extend (av, items - 2);
3379 for (i = 1; i < items; ++i)
3380 av_push (av, SvREFCNT_inc_NN (ST (i)));
3381
3382 if ((SV *)hv == &PL_sv_undef)
2323 { 3383 {
2324 SV *old = PL_diehook; 3384 PUSHMARK (SP);
2325 PL_diehook = 0; 3385 EXTEND (SP, 2);
2326 SvREFCNT_dec (old); 3386 PUSHs (sv_Coro);
2327 croak ("\3async_pool terminate\2\n"); 3387 PUSHs ((SV *)cv_pool_handler);
3388 PUTBACK;
3389 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3390 SPAGAIN;
3391
3392 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2328 } 3393 }
2329 3394
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 { 3395 {
2343 av_fill (defav, len - 1); 3396 struct coro *coro = SvSTATE_hv (hv);
2344 for (i = 0; i < len; ++i) 3397
2345 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3398 assert (!coro->invoke_cb);
3399 assert (!coro->invoke_av);
3400 coro->invoke_cb = SvREFCNT_inc (cb);
3401 coro->invoke_av = av;
2346 } 3402 }
2347 3403
3404 api_ready (aTHX_ (SV *)hv);
3405
3406 if (GIMME_V != G_VOID)
3407 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3408 else
2348 SvREFCNT_dec (invoke); 3409 SvREFCNT_dec (hv);
2349} 3410}
2350 3411
2351void 3412SV *
2352_pool_2 (SV *cb) 3413rouse_cb ()
3414 PROTOTYPE:
2353 CODE: 3415 CODE:
2354{ 3416 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: 3417 OUTPUT:
2427 RETVAL 3418 RETVAL
2428 3419
2429#endif
2430
2431
2432MODULE = Coro::State PACKAGE = Coro::AIO
2433
2434void 3420void
2435_get_state (SV *self) 3421rouse_wait (...)
3422 PROTOTYPE: ;$
2436 PPCODE: 3423 PPCODE:
2437{ 3424 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
2446 data->errorno = errno;
2447 data->laststype = PL_laststype;
2448 data->laststatval = PL_laststatval;
2449 data->statcache = PL_statcache;
2450
2451 av_extend (av, AvFILLp (defav) + 1 + 1);
2452
2453 for (i = 0; i <= AvFILLp (defav); ++i)
2454 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2455
2456 av_push (av, data_sv);
2457
2458 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2459
2460 api_ready (self);
2461}
2462 3425
2463void 3426void
2464_set_state (SV *state) 3427on_enter (SV *block)
3428 ALIAS:
3429 on_leave = 1
2465 PROTOTYPE: $ 3430 PROTOTYPE: &
3431 CODE:
3432{
3433 struct coro *coro = SvSTATE_current;
3434 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3435
3436 block = (SV *)coro_sv_2cv (aTHX_ block);
3437
3438 if (!*avp)
3439 *avp = newAV ();
3440
3441 av_push (*avp, SvREFCNT_inc (block));
3442
3443 if (!ix)
3444 on_enterleave_call (aTHX_ block);
3445
3446 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3447 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3448 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3449}
3450
3451
3452MODULE = Coro::State PACKAGE = PerlIO::cede
3453
3454BOOT:
3455 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3456
3457
3458MODULE = Coro::State PACKAGE = Coro::Semaphore
3459
3460SV *
3461new (SV *klass, SV *count = 0)
3462 CODE:
3463 RETVAL = sv_bless (
3464 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3465 GvSTASH (CvGV (cv))
3466 );
3467 OUTPUT:
3468 RETVAL
3469
3470# helper for Coro::Channel and others
3471SV *
3472_alloc (int count)
3473 CODE:
3474 RETVAL = coro_waitarray_new (aTHX_ count);
3475 OUTPUT:
3476 RETVAL
3477
3478SV *
3479count (SV *self)
3480 CODE:
3481 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3482 OUTPUT:
3483 RETVAL
3484
3485void
3486up (SV *self, int adjust = 1)
3487 ALIAS:
3488 adjust = 1
3489 CODE:
3490 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3491
3492void
3493down (...)
3494 CODE:
3495 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3496
3497void
3498wait (...)
3499 CODE:
3500 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3501
3502void
3503try (SV *self)
3504 PPCODE:
3505{
3506 AV *av = (AV *)SvRV (self);
3507 SV *count_sv = AvARRAY (av)[0];
3508 IV count = SvIVX (count_sv);
3509
3510 if (count > 0)
3511 {
3512 --count;
3513 SvIVX (count_sv) = count;
3514 XSRETURN_YES;
3515 }
3516 else
3517 XSRETURN_NO;
3518}
3519
3520void
3521waiters (SV *self)
3522 PPCODE:
3523{
3524 AV *av = (AV *)SvRV (self);
3525 int wcount = AvFILLp (av) + 1 - 1;
3526
3527 if (GIMME_V == G_SCALAR)
3528 XPUSHs (sv_2mortal (newSViv (wcount)));
3529 else
3530 {
3531 int i;
3532 EXTEND (SP, wcount);
3533 for (i = 1; i <= wcount; ++i)
3534 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3535 }
3536}
3537
3538MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3539
3540void
3541_may_delete (SV *sem, int count, int extra_refs)
2466 PPCODE: 3542 PPCODE:
2467{ 3543{
2468 AV *av = (AV *)SvRV (state); 3544 AV *av = (AV *)SvRV (sem);
2469 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2470 int i;
2471 3545
2472 errno = data->errorno; 3546 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2473 PL_laststype = data->laststype; 3547 && AvFILLp (av) == 0 /* no waiters, just count */
2474 PL_laststatval = data->laststatval; 3548 && SvIV (AvARRAY (av)[0]) == count)
2475 PL_statcache = data->statcache; 3549 XSRETURN_YES;
2476 3550
3551 XSRETURN_NO;
3552}
3553
3554MODULE = Coro::State PACKAGE = Coro::Signal
3555
3556SV *
3557new (SV *klass)
3558 CODE:
3559 RETVAL = sv_bless (
3560 coro_waitarray_new (aTHX_ 0),
3561 GvSTASH (CvGV (cv))
3562 );
3563 OUTPUT:
3564 RETVAL
3565
3566void
3567wait (...)
3568 CODE:
3569 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3570
3571void
3572broadcast (SV *self)
3573 CODE:
3574{
3575 AV *av = (AV *)SvRV (self);
3576 coro_signal_wake (aTHX_ av, AvFILLp (av));
3577}
3578
3579void
3580send (SV *self)
3581 CODE:
3582{
3583 AV *av = (AV *)SvRV (self);
3584
2477 EXTEND (SP, AvFILLp (av)); 3585 if (AvFILLp (av))
2478 for (i = 0; i < AvFILLp (av); ++i) 3586 coro_signal_wake (aTHX_ av, 1);
2479 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3587 else
3588 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2480} 3589}
3590
3591IV
3592awaited (SV *self)
3593 CODE:
3594 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3595 OUTPUT:
3596 RETVAL
2481 3597
2482 3598
2483MODULE = Coro::State PACKAGE = Coro::AnyEvent 3599MODULE = Coro::State PACKAGE = Coro::AnyEvent
2484 3600
2485BOOT: 3601BOOT:
2486 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3602 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2487 3603
2488SV * 3604void
2489_schedule (...) 3605_schedule (...)
2490 PROTOTYPE: @
2491 CODE: 3606 CODE:
2492{ 3607{
2493 static int incede; 3608 static int incede;
2494 3609
2495 api_cede_notself (); 3610 api_cede_notself (aTHX);
2496 3611
2497 ++incede; 3612 ++incede;
2498 while (coro_nready >= incede && api_cede ()) 3613 while (coro_nready >= incede && api_cede (aTHX))
2499 ; 3614 ;
2500 3615
2501 sv_setsv (sv_activity, &PL_sv_undef); 3616 sv_setsv (sv_activity, &PL_sv_undef);
2502 if (coro_nready >= incede) 3617 if (coro_nready >= incede)
2503 { 3618 {
2504 PUSHMARK (SP); 3619 PUSHMARK (SP);
2505 PUTBACK; 3620 PUTBACK;
2506 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3621 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2507 SPAGAIN;
2508 } 3622 }
2509 3623
2510 --incede; 3624 --incede;
2511} 3625}
2512 3626
2513 3627
2514MODULE = Coro::State PACKAGE = PerlIO::cede 3628MODULE = Coro::State PACKAGE = Coro::AIO
2515 3629
2516BOOT: 3630void
2517 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3631_register (char *target, char *proto, SV *req)
3632 CODE:
3633{
3634 CV *req_cv = coro_sv_2cv (aTHX_ req);
3635 /* newXSproto doesn't return the CV on 5.8 */
3636 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3637 sv_setpv ((SV *)slf_cv, proto);
3638 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3639}
2518 3640

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