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Comparing Coro/Coro/State.xs (file contents):
Revision 1.279 by root, Sun Nov 16 08:59:16 2008 UTC vs.
Revision 1.358 by root, Mon Jun 29 04:30:25 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
… …
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. */
121#if __GNUC__ >= 4 130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 132# define STACKLEVEL __builtin_frame_address (0)
123#else 133#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel)
125#endif 136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr), (value))
132# define INLINE static inline 143# define INLINE static inline
133#else 144#else
134# define attribute(x) 145# define attribute(x)
135# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
136# define INLINE static 147# define INLINE static
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 159# if CORO_PTHREAD
152static void *coro_thx; 160static void *coro_thx;
153# endif 161# endif
162#endif
154 163
155#else 164#ifdef __linux
156 165# include <time.h> /* for timespec */
157# define LOCK (void)0 166# include <syscall.h> /* for SYS_* */
158# define UNLOCK (void)0 167# ifdef SYS_clock_gettime
159 168# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
169# define CORO_CLOCK_MONOTONIC 1
170# define CORO_CLOCK_THREAD_CPUTIME_ID 3
160#endif 171# endif
161 172#endif
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 173
177static double (*nvtime)(); /* so why doesn't it take void? */ 174static double (*nvtime)(); /* so why doesn't it take void? */
175
176/* we hijack an hopefully unused CV flag for our purposes */
177#define CVf_SLF 0x4000
178static OP *pp_slf (pTHX);
178 179
179static U32 cctx_gen; 180static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 181static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 182static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 183static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 184static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 185static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 186static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 187
188static AV *av_destroy; /* destruction queue */
189static SV *sv_manager; /* the manager coro */
190static SV *sv_idle; /* $Coro::idle */
187 191
188static GV *irsgv; /* $/ */ 192static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 193static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 194static SV *rv_diehook;
191static SV *rv_warnhook; 195static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 196static HV *hv_sig; /* %SIG */
193 197
194/* async_pool helper stuff */ 198/* async_pool helper stuff */
195static SV *sv_pool_rss; 199static SV *sv_pool_rss;
196static SV *sv_pool_size; 200static SV *sv_pool_size;
201static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 202static AV *av_async_pool; /* idle pool */
203static SV *sv_Coro; /* class string */
204static CV *cv_pool_handler;
205static CV *cv_coro_state_new;
198 206
199/* Coro::AnyEvent */ 207/* Coro::AnyEvent */
200static SV *sv_activity; 208static SV *sv_activity;
201 209
202static struct coro_cctx *cctx_first; 210static struct coro_cctx *cctx_first;
… …
231 int valgrind_id; 239 int valgrind_id;
232#endif 240#endif
233 unsigned char flags; 241 unsigned char flags;
234} coro_cctx; 242} coro_cctx;
235 243
244coro_cctx *cctx_current; /* the currently running cctx */
245
246/*****************************************************************************/
247
236enum { 248enum {
237 CF_RUNNING = 0x0001, /* coroutine is running */ 249 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 250 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 251 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 252 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
253 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
241}; 254};
242 255
243/* the structure where most of the perl state is stored, overlaid on the cxstack */ 256/* the structure where most of the perl state is stored, overlaid on the cxstack */
244typedef struct 257typedef struct
245{ 258{
246 SV *defsv; 259 SV *defsv;
247 AV *defav; 260 AV *defav;
248 SV *errsv; 261 SV *errsv;
249 SV *irsgv; 262 SV *irsgv;
263 HV *hinthv;
250#define VAR(name,type) type name; 264#define VAR(name,type) type name;
251# include "state.h" 265# include "state.h"
252#undef VAR 266#undef VAR
253} perl_slots; 267} perl_slots;
254 268
… …
257/* this is a structure representing a perl-level coroutine */ 271/* this is a structure representing a perl-level coroutine */
258struct coro { 272struct coro {
259 /* the C coroutine allocated to this perl coroutine, if any */ 273 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 274 coro_cctx *cctx;
261 275
262 /* process data */ 276 /* ready queue */
277 struct coro *next_ready;
278
279 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 280 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 281 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 282 perl_slots *slot; /* basically the saved sp */
266 283
284 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 285 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */ 286 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 287 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 288 HV *hv; /* the perl hash associated with this coro, if any */
289 void (*on_destroy)(pTHX_ struct coro *coro);
271 290
272 /* statistics */ 291 /* statistics */
273 int usecount; /* number of transfers to this coro */ 292 int usecount; /* number of transfers to this coro */
274 293
275 /* coro process data */ 294 /* coro process data */
276 int prio; 295 int prio;
277 SV *throw; /* exception to be thrown */ 296 SV *except; /* exception to be thrown */
297 SV *rouse_cb;
278 298
279 /* async_pool */ 299 /* async_pool */
280 SV *saved_deffh; 300 SV *saved_deffh;
301 SV *invoke_cb;
302 AV *invoke_av;
303
304 /* on_enter/on_leave */
305 AV *on_enter;
306 AV *on_leave;
281 307
282 /* linked list */ 308 /* linked list */
283 struct coro *next, *prev; 309 struct coro *next, *prev;
284}; 310};
285 311
286typedef struct coro *Coro__State; 312typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 313typedef struct coro *Coro__State_or_hashref;
288 314
315/* the following variables are effectively part of the perl context */
316/* and get copied between struct coro and these variables */
317/* the mainr easonw e don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 318static struct CoroSLF slf_frame; /* the current slf frame */
290 319
291/** Coro ********************************************************************/ 320/** Coro ********************************************************************/
292 321
293#define PRIO_MAX 3 322#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 323#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 324#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 325#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 326#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 327#define CORO_PRIO_MIN -4
299 328
300/* for Coro.pm */ 329/* for Coro.pm */
301static SV *coro_current; 330static SV *coro_current;
302static SV *coro_readyhook; 331static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 332static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
333static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 334static struct coro *coro_first;
305#define coro_nready coroapi.nready 335#define coro_nready coroapi.nready
306 336
307/** lowlevel stuff **********************************************************/ 337/** lowlevel stuff **********************************************************/
308 338
… …
334 get_hv (name, create); 364 get_hv (name, create);
335#endif 365#endif
336 return get_hv (name, create); 366 return get_hv (name, create);
337} 367}
338 368
369/* may croak */
370INLINE CV *
371coro_sv_2cv (pTHX_ SV *sv)
372{
373 HV *st;
374 GV *gvp;
375 CV *cv = sv_2cv (sv, &st, &gvp, 0);
376
377 if (!cv)
378 croak ("code reference expected");
379
380 return cv;
381}
382
383/*****************************************************************************/
384/* magic glue */
385
386#define CORO_MAGIC_type_cv 26
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388
389#define CORO_MAGIC_NN(sv, type) \
390 (expect_true (SvMAGIC (sv)->mg_type == type) \
391 ? SvMAGIC (sv) \
392 : mg_find (sv, type))
393
394#define CORO_MAGIC(sv, type) \
395 (expect_true (SvMAGIC (sv)) \
396 ? CORO_MAGIC_NN (sv, type) \
397 : 0)
398
399#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
400#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
401
402INLINE struct coro *
403SvSTATE_ (pTHX_ SV *coro)
404{
405 HV *stash;
406 MAGIC *mg;
407
408 if (SvROK (coro))
409 coro = SvRV (coro);
410
411 if (expect_false (SvTYPE (coro) != SVt_PVHV))
412 croak ("Coro::State object required");
413
414 stash = SvSTASH (coro);
415 if (expect_false (stash != coro_stash && stash != coro_state_stash))
416 {
417 /* very slow, but rare, check */
418 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
419 croak ("Coro::State object required");
420 }
421
422 mg = CORO_MAGIC_state (coro);
423 return (struct coro *)mg->mg_ptr;
424}
425
426#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
427
428/* faster than SvSTATE, but expects a coroutine hv */
429#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
430#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
431
432/*****************************************************************************/
433/* padlist management and caching */
434
339static AV * 435static AV *
340coro_clone_padlist (pTHX_ CV *cv) 436coro_derive_padlist (pTHX_ CV *cv)
341{ 437{
342 AV *padlist = CvPADLIST (cv); 438 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 439 AV *newpadlist, *newpad;
344 440
345 newpadlist = newAV (); 441 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 446 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 447#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 448 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 449 --AvFILLp (padlist);
354 450
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 451 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 452 av_store (newpadlist, 1, (SV *)newpad);
357 453
358 return newpadlist; 454 return newpadlist;
359} 455}
360 456
361static void 457static void
362free_padlist (pTHX_ AV *padlist) 458free_padlist (pTHX_ AV *padlist)
363{ 459{
364 /* may be during global destruction */ 460 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 461 if (!IN_DESTRUCT)
366 { 462 {
367 I32 i = AvFILLp (padlist); 463 I32 i = AvFILLp (padlist);
368 while (i >= 0) 464
465 while (i > 0) /* special-case index 0 */
369 { 466 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 467 /* we try to be extra-careful here */
371 if (svp) 468 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 469 I32 j = AvFILLp (av);
373 SV *sv; 470
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 471 while (j >= 0)
472 SvREFCNT_dec (AvARRAY (av)[j--]);
473
474 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 475 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 476 }
380 477
478 SvREFCNT_dec (AvARRAY (padlist)[0]);
479
480 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 481 SvREFCNT_dec ((SV*)padlist);
382 } 482 }
383} 483}
384 484
385static int 485static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 486coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 487{
388 AV *padlist; 488 AV *padlist;
389 AV *av = (AV *)mg->mg_obj; 489 AV *av = (AV *)mg->mg_obj;
490
491 /* perl manages to free our internal AV and _then_ call us */
492 if (IN_DESTRUCT)
493 return;
390 494
391 /* casting is fun. */ 495 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 496 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 497 free_padlist (aTHX_ padlist);
394 498
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 499 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 500
397 return 0; 501 return 0;
398} 502}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 503
403static MGVTBL coro_cv_vtbl = { 504static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 505 0, 0, 0, 0,
405 coro_cv_free 506 coro_cv_free
406}; 507};
407
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443 508
444/* the next two functions merely cache the padlists */ 509/* the next two functions merely cache the padlists */
445static void 510static void
446get_padlist (pTHX_ CV *cv) 511get_padlist (pTHX_ CV *cv)
447{ 512{
… …
453 else 518 else
454 { 519 {
455#if CORO_PREFER_PERL_FUNCTIONS 520#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 521 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 522 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 523 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 524 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 525 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 526 SvREFCNT_dec (cp);
462#else 527#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 528 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 529#endif
465 } 530 }
466} 531}
467 532
468static void 533static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 540 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 541
477 av = (AV *)mg->mg_obj; 542 av = (AV *)mg->mg_obj;
478 543
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 544 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 545 av_extend (av, AvFILLp (av) + 1);
481 546
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 547 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 548}
484 549
485/** load & save, init *******************************************************/ 550/** load & save, init *******************************************************/
551
552static void
553on_enterleave_call (pTHX_ SV *cb);
486 554
487static void 555static void
488load_perl (pTHX_ Coro__State c) 556load_perl (pTHX_ Coro__State c)
489{ 557{
490 perl_slots *slot = c->slot; 558 perl_slots *slot = c->slot;
491 c->slot = 0; 559 c->slot = 0;
492 560
493 PL_mainstack = c->mainstack; 561 PL_mainstack = c->mainstack;
494 562
495 GvSV (PL_defgv) = slot->defsv; 563 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 564 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 565 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 566 GvSV (irsgv) = slot->irsgv;
567 GvHV (PL_hintgv) = slot->hinthv;
499 568
500 #define VAR(name,type) PL_ ## name = slot->name; 569 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 570 # include "state.h"
502 #undef VAR 571 #undef VAR
503 572
… …
515 } 584 }
516 585
517 PUTBACK; 586 PUTBACK;
518 } 587 }
519 588
520 slf_frame = c->slf_frame; 589 slf_frame = c->slf_frame;
590 CORO_THROW = c->except;
591
592 if (expect_false (c->on_enter))
593 {
594 int i;
595
596 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
597 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
598 }
521} 599}
522 600
523static void 601static void
524save_perl (pTHX_ Coro__State c) 602save_perl (pTHX_ Coro__State c)
525{ 603{
604 if (expect_false (c->on_leave))
605 {
606 int i;
607
608 for (i = AvFILLp (c->on_leave); i >= 0; --i)
609 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
610 }
611
612 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 613 c->slf_frame = slf_frame;
527 614
528 { 615 {
529 dSP; 616 dSP;
530 I32 cxix = cxstack_ix; 617 I32 cxix = cxstack_ix;
… …
542 { 629 {
543 while (expect_true (cxix >= 0)) 630 while (expect_true (cxix >= 0))
544 { 631 {
545 PERL_CONTEXT *cx = &ccstk[cxix--]; 632 PERL_CONTEXT *cx = &ccstk[cxix--];
546 633
547 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 634 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
548 { 635 {
549 CV *cv = cx->blk_sub.cv; 636 CV *cv = cx->blk_sub.cv;
550 637
551 if (expect_true (CvDEPTH (cv))) 638 if (expect_true (CvDEPTH (cv)))
552 { 639 {
… …
587 c->mainstack = PL_mainstack; 674 c->mainstack = PL_mainstack;
588 675
589 { 676 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 677 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 678
592 slot->defav = GvAV (PL_defgv); 679 slot->defav = GvAV (PL_defgv);
593 slot->defsv = DEFSV; 680 slot->defsv = DEFSV;
594 slot->errsv = ERRSV; 681 slot->errsv = ERRSV;
595 slot->irsgv = GvSV (irsgv); 682 slot->irsgv = GvSV (irsgv);
683 slot->hinthv = GvHV (PL_hintgv);
596 684
597 #define VAR(name,type) slot->name = PL_ ## name; 685 #define VAR(name,type) slot->name = PL_ ## name;
598 # include "state.h" 686 # include "state.h"
599 #undef VAR 687 #undef VAR
600 } 688 }
… …
605 * of perl.c:init_stacks, except that it uses less memory 693 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 694 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 695 * not usually need a lot of stackspace.
608 */ 696 */
609#if CORO_PREFER_PERL_FUNCTIONS 697#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 698# define coro_init_stacks(thx) init_stacks ()
611#else 699#else
612static void 700static void
613coro_init_stacks (pTHX) 701coro_init_stacks (pTHX)
614{ 702{
615 PL_curstackinfo = new_stackinfo(32, 8); 703 PL_curstackinfo = new_stackinfo(32, 8);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 766#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 767 Safefree (PL_retstack);
680#endif 768#endif
681} 769}
682 770
771#define CORO_RSS \
772 rss += sizeof (SYM (curstackinfo)); \
773 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
774 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
775 rss += SYM (tmps_max) * sizeof (SV *); \
776 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
777 rss += SYM (scopestack_max) * sizeof (I32); \
778 rss += SYM (savestack_max) * sizeof (ANY);
779
683static size_t 780static size_t
684coro_rss (pTHX_ struct coro *coro) 781coro_rss (pTHX_ struct coro *coro)
685{ 782{
686 size_t rss = sizeof (*coro); 783 size_t rss = sizeof (*coro);
687 784
688 if (coro->mainstack) 785 if (coro->mainstack)
689 { 786 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 787 if (coro->flags & CF_RUNNING)
694 { 788 {
695 slot = &tmp_slot; 789 #define SYM(sym) PL_ ## sym
696 790 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 791 #undef SYM
700 } 792 }
701 else 793 else
702 slot = coro->slot;
703
704 if (slot)
705 { 794 {
706 rss += sizeof (slot->curstackinfo); 795 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 796 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 797 #undef SYM
709 rss += slot->tmps_max * sizeof (SV *);
710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
711 rss += slot->scopestack_max * sizeof (I32);
712 rss += slot->savestack_max * sizeof (ANY);
713
714#if !PERL_VERSION_ATLEAST (5,10,0)
715 rss += slot->retstack_max * sizeof (OP *);
716#endif
717 } 798 }
718 } 799 }
719 800
720 return rss; 801 return rss;
721} 802}
… …
734#endif 815#endif
735 816
736/* 817/*
737 * This overrides the default magic get method of %SIG elements. 818 * This overrides the default magic get method of %SIG elements.
738 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 819 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
739 * and instead of tryign to save and restore the hash elements, we just provide 820 * and instead of trying to save and restore the hash elements, we just provide
740 * readback here. 821 * readback here.
741 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
742 * not expecting this to actually change the hook. This is a potential problem
743 * when a schedule happens then, but we ignore this.
744 */ 822 */
745static int 823static int
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 824coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{ 825{
748 const char *s = MgPV_nolen_const (mg); 826 const char *s = MgPV_nolen_const (mg);
… …
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 879 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802 880
803 if (svp) 881 if (svp)
804 { 882 {
805 SV *old = *svp; 883 SV *old = *svp;
806 *svp = newSVsv (sv); 884 *svp = SvOK (sv) ? newSVsv (sv) : 0;
807 SvREFCNT_dec (old); 885 SvREFCNT_dec (old);
808 return 0; 886 return 0;
809 } 887 }
810 } 888 }
811 889
… …
823slf_check_nop (pTHX_ struct CoroSLF *frame) 901slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 902{
825 return 0; 903 return 0;
826} 904}
827 905
828static void 906static int
907slf_check_repeat (pTHX_ struct CoroSLF *frame)
908{
909 return 1;
910}
911
912static UNOP coro_setup_op;
913
914static void NOINLINE /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 915coro_setup (pTHX_ struct coro *coro)
830{ 916{
831 /* 917 /*
832 * emulate part of the perl startup here. 918 * emulate part of the perl startup here.
833 */ 919 */
… …
835 921
836 PL_runops = RUNOPS_DEFAULT; 922 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 923 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 924 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 925 PL_comppad = 0;
926 PL_comppad_name = 0;
927 PL_comppad_name_fill = 0;
928 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 929 PL_curpm = 0;
841 PL_curpad = 0; 930 PL_curpad = 0;
842 PL_localizing = 0; 931 PL_localizing = 0;
843 PL_dirty = 0; 932 PL_dirty = 0;
844 PL_restartop = 0; 933 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 934#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 935 PL_parser = 0;
847#endif 936#endif
937 PL_hints = 0;
848 938
849 /* recreate the die/warn hooks */ 939 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 940 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 941 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
852 942
853 GvSV (PL_defgv) = newSV (0); 943 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 944 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 945 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 946 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
947 GvHV (PL_hintgv) = 0;
857 PL_rs = newSVsv (GvSV (irsgv)); 948 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 949 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 950
860 { 951 {
861 dSP; 952 dSP;
862 UNOP myop; 953 UNOP myop;
863 954
864 Zero (&myop, 1, UNOP); 955 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 956 myop.op_next = Nullop;
957 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 958 myop.op_flags = OPf_WANT_VOID;
867 959
868 PUSHMARK (SP); 960 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 961 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 962 PUTBACK;
871 PL_op = (OP *)&myop; 963 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 964 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 965 }
875 966
876 /* this newly created coroutine might be run on an existing cctx which most 967 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 968 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 969 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 970 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 971 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881}
882 972
973 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
974 coro_setup_op.op_next = PL_op;
975 coro_setup_op.op_type = OP_ENTERSUB;
976 coro_setup_op.op_ppaddr = pp_slf;
977 /* no flags etc. required, as an init function won't be called */
978
979 PL_op = (OP *)&coro_setup_op;
980
981 /* copy throw, in case it was set before coro_setup */
982 CORO_THROW = coro->except;
983}
984
883static void 985static void
884coro_destruct (pTHX_ struct coro *coro) 986coro_unwind_stacks (pTHX)
885{ 987{
886 if (!IN_DESTRUCT) 988 if (!IN_DESTRUCT)
887 { 989 {
888 /* restore all saved variables and stuff */ 990 /* restore all saved variables and stuff */
889 LEAVE_SCOPE (0); 991 LEAVE_SCOPE (0);
… …
897 POPSTACK_TO (PL_mainstack); 999 POPSTACK_TO (PL_mainstack);
898 1000
899 /* unwind main stack */ 1001 /* unwind main stack */
900 dounwind (-1); 1002 dounwind (-1);
901 } 1003 }
1004}
902 1005
903 SvREFCNT_dec (GvSV (PL_defgv)); 1006static void
904 SvREFCNT_dec (GvAV (PL_defgv)); 1007coro_destruct_perl (pTHX_ struct coro *coro)
905 SvREFCNT_dec (GvSV (PL_errgv)); 1008{
906 SvREFCNT_dec (PL_defoutgv); 1009 SV *svf [9];
907 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv));
909 1010
910 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook);
912 1011 {
1012 struct coro *current = SvSTATE_current;
1013
1014 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1015
1016 save_perl (aTHX_ current);
1017 load_perl (aTHX_ coro);
1018
1019 coro_unwind_stacks (aTHX);
1020 coro_destruct_stacks (aTHX);
1021
1022 // now save some sv's to be free'd later
1023 svf [0] = GvSV (PL_defgv);
1024 svf [1] = (SV *)GvAV (PL_defgv);
1025 svf [2] = GvSV (PL_errgv);
1026 svf [3] = (SV *)PL_defoutgv;
1027 svf [4] = PL_rs;
1028 svf [5] = GvSV (irsgv);
1029 svf [6] = (SV *)GvHV (PL_hintgv);
1030 svf [7] = PL_diehook;
1031 svf [8] = PL_warnhook;
1032 assert (9 == sizeof (svf) / sizeof (*svf));
1033
1034 load_perl (aTHX_ current);
1035 }
1036
1037 {
1038 int i;
1039
1040 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1041 SvREFCNT_dec (svf [i]);
1042
913 SvREFCNT_dec (coro->saved_deffh); 1043 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 1044 SvREFCNT_dec (coro->rouse_cb);
915 1045 SvREFCNT_dec (coro->invoke_cb);
916 coro_destruct_stacks (aTHX); 1046 SvREFCNT_dec (coro->invoke_av);
1047 }
917} 1048}
918 1049
919INLINE void 1050INLINE void
920free_coro_mortal (pTHX) 1051free_coro_mortal (pTHX)
921{ 1052{
… …
929static int 1060static int
930runops_trace (pTHX) 1061runops_trace (pTHX)
931{ 1062{
932 COP *oldcop = 0; 1063 COP *oldcop = 0;
933 int oldcxix = -2; 1064 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 1065
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1066 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 1067 {
939 PERL_ASYNC_CHECK (); 1068 PERL_ASYNC_CHECK ();
940 1069
941 if (cctx->flags & CC_TRACE_ALL) 1070 if (cctx_current->flags & CC_TRACE_ALL)
942 { 1071 {
943 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1072 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
944 { 1073 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1074 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 1075 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 1076 AV *av = newAV (); /* return values */
948 SV **cb; 1077 SV **cb;
… …
985 1114
986 if (PL_curcop != &PL_compiling) 1115 if (PL_curcop != &PL_compiling)
987 { 1116 {
988 SV **cb; 1117 SV **cb;
989 1118
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1119 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
991 { 1120 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1121 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1122
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1123 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1124 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1125 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1126 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1127 SV *fullname = sv_2mortal (newSV (0));
1000 1128
1001 if (isGV (gv)) 1129 if (isGV (gv))
… …
1006 SAVETMPS; 1134 SAVETMPS;
1007 EXTEND (SP, 3); 1135 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1136 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1137 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1138 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1139 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK; 1140 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1141 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1014 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1142 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN; 1143 SPAGAIN;
1016 FREETMPS; 1144 FREETMPS;
… …
1019 } 1147 }
1020 1148
1021 oldcxix = cxstack_ix; 1149 oldcxix = cxstack_ix;
1022 } 1150 }
1023 1151
1024 if (cctx->flags & CC_TRACE_LINE) 1152 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1153 {
1026 dSP; 1154 dSP;
1027 1155
1028 PL_runops = RUNOPS_DEFAULT; 1156 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1157 ENTER;
… …
1048 1176
1049 TAINT_NOT; 1177 TAINT_NOT;
1050 return 0; 1178 return 0;
1051} 1179}
1052 1180
1181static struct CoroSLF cctx_ssl_frame;
1182
1053static void 1183static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1184slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1185{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1186 ta->prev = 0;
1058} 1187}
1059 1188
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1189static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1190slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */ 1191{
1063/* also initialises PL_top_env */ 1192 *frame = cctx_ssl_frame;
1193
1194 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1195}
1196
1197/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1064static void NOINLINE 1198static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx) 1199cctx_prepare (pTHX)
1066{ 1200{
1067 dSP;
1068 UNOP myop;
1069
1070 PL_top_env = &PL_start_env; 1201 PL_top_env = &PL_start_env;
1071 1202
1072 if (cctx->flags & CC_TRACE) 1203 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1204 PL_runops = runops_trace;
1074 1205
1075 Zero (&myop, 1, UNOP); 1206 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1207 * that can lead to creation of a new cctx */
1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1208 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1209 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1078 1210
1079 PUSHMARK (SP); 1211 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1212 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1213
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1214 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1215 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1216}
1088 1217
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1218/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1219INLINE void
1091transfer_tail (pTHX) 1220transfer_tail (pTHX)
1092{ 1221{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX); 1222 free_coro_mortal (aTHX);
1098 UNLOCK;
1099
1100 if (expect_false (next->throw))
1101 {
1102 SV *exception = sv_2mortal (next->throw);
1103
1104 next->throw = 0;
1105 sv_setsv (ERRSV, exception);
1106 croak (0);
1107 }
1108} 1223}
1109 1224
1110/* 1225/*
1111 * this is a _very_ stripped down perl interpreter ;) 1226 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1227 */
… …
1124 /* normally we would need to skip the entersub here */ 1239 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1240 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1241 /* PL_nop = PL_nop->op_next */
1127 1242
1128 /* inject a fake subroutine call to cctx_init */ 1243 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1244 cctx_prepare (aTHX);
1130 1245
1131 /* cctx_run is the alternative tail of transfer() */ 1246 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1247 transfer_tail (aTHX);
1134 1248
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1249 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1250 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1251 perl_run (PL_curinterp);
1252 /*
1253 * Unfortunately, there is no way to get at the return values of the
1254 * coro body here, as perl_run destroys these
1255 */
1138 1256
1139 /* 1257 /*
1140 * If perl-run returns we assume exit() was being called or the coro 1258 * If perl-run returns we assume exit() was being called or the coro
1141 * fell off the end, which seems to be the only valid (non-bug) 1259 * fell off the end, which seems to be the only valid (non-bug)
1142 * reason for perl_run to return. We try to exit by jumping to the 1260 * reason for perl_run to return. We try to exit by jumping to the
1143 * bootstrap-time "top" top_env, as we cannot restore the "main" 1261 * bootstrap-time "top" top_env, as we cannot restore the "main"
1144 * coroutine as Coro has no such concept 1262 * coroutine as Coro has no such concept.
1263 * This actually isn't valid with the pthread backend, but OSes requiring
1264 * that backend are too broken to do it in a standards-compliant way.
1145 */ 1265 */
1146 PL_top_env = main_top_env; 1266 PL_top_env = main_top_env;
1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1267 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 } 1268 }
1149} 1269}
… …
1226cctx_destroy (coro_cctx *cctx) 1346cctx_destroy (coro_cctx *cctx)
1227{ 1347{
1228 if (!cctx) 1348 if (!cctx)
1229 return; 1349 return;
1230 1350
1351 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1352
1231 --cctx_count; 1353 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1354 coro_destroy (&cctx->cctx);
1233 1355
1234 /* coro_transfer creates new, empty cctx's */ 1356 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr) 1357 if (cctx->sptr)
… …
1293/** coroutine switching *****************************************************/ 1415/** coroutine switching *****************************************************/
1294 1416
1295static void 1417static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1418transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1419{
1420 /* TODO: throwing up here is considered harmful */
1421
1298 if (expect_true (prev != next)) 1422 if (expect_true (prev != next))
1299 { 1423 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1424 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1425 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1302 1426
1303 if (expect_false (next->flags & CF_RUNNING))
1304 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1305
1306 if (expect_false (next->flags & CF_DESTROYED)) 1427 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1307 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1428 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1308 1429
1309#if !PERL_VERSION_ATLEAST (5,10,0) 1430#if !PERL_VERSION_ATLEAST (5,10,0)
1310 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1431 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1311 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1432 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1312#endif 1433#endif
1313 } 1434 }
1314} 1435}
1315 1436
1316/* always use the TRANSFER macro */ 1437/* always use the TRANSFER macro */
1317static void NOINLINE 1438static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1439transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1440{
1320 dSTACKLEVEL; 1441 dSTACKLEVEL;
1321 1442
1322 /* sometimes transfer is only called to set idle_sp */ 1443 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1444 if (expect_false (!prev))
1324 { 1445 {
1325 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1446 cctx_current->idle_sp = STACKLEVEL;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1447 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1448 }
1328 else if (expect_true (prev != next)) 1449 else if (expect_true (prev != next))
1329 { 1450 {
1330 coro_cctx *prev__cctx; 1451 coro_cctx *cctx_prev;
1331 1452
1332 if (expect_false (prev->flags & CF_NEW)) 1453 if (expect_false (prev->flags & CF_NEW))
1333 { 1454 {
1334 /* create a new empty/source context */ 1455 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1456 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1457 prev->flags |= CF_RUNNING;
1338 } 1458 }
1339 1459
1340 prev->flags &= ~CF_RUNNING; 1460 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1461 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1462
1345 /* first get rid of the old state */ 1463 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1464 save_perl (aTHX_ prev);
1347 1465
1348 if (expect_false (next->flags & CF_NEW)) 1466 if (expect_false (next->flags & CF_NEW))
… …
1353 coro_setup (aTHX_ next); 1471 coro_setup (aTHX_ next);
1354 } 1472 }
1355 else 1473 else
1356 load_perl (aTHX_ next); 1474 load_perl (aTHX_ next);
1357 1475
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */ 1476 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1477 if (expect_true (
1362 prev__cctx->idle_sp == (void *)stacklevel 1478 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1479 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1480 && !force_cctx
1365 )) 1481 ))
1366 { 1482 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1483 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1368 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1484 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1369 1485
1370 prev->cctx = 0;
1371
1372 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1486 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1373 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1487 /* without this the next cctx_get might destroy the running cctx while still in use */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1488 if (expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1489 if (expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1490 next->cctx = cctx_get (aTHX);
1377 1491
1378 cctx_put (prev__cctx); 1492 cctx_put (cctx_current);
1379 } 1493 }
1494 else
1495 prev->cctx = cctx_current;
1380 1496
1381 ++next->usecount; 1497 ++next->usecount;
1382 1498
1383 if (expect_true (!next->cctx)) 1499 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1500 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1501
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1502 next->cctx = 0;
1387 transfer_next = next;
1388 1503
1389 if (expect_false (prev__cctx != next->cctx)) 1504 if (expect_false (cctx_prev != cctx_current))
1390 { 1505 {
1391 prev__cctx->top_env = PL_top_env; 1506 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1507 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1508 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1509 }
1395 1510
1396 transfer_tail (aTHX); 1511 transfer_tail (aTHX);
1397 } 1512 }
1398} 1513}
… …
1405static int 1520static int
1406coro_state_destroy (pTHX_ struct coro *coro) 1521coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1522{
1408 if (coro->flags & CF_DESTROYED) 1523 if (coro->flags & CF_DESTROYED)
1409 return 0; 1524 return 0;
1525
1526 if (coro->on_destroy && !PL_dirty)
1527 coro->on_destroy (aTHX_ coro);
1410 1528
1411 coro->flags |= CF_DESTROYED; 1529 coro->flags |= CF_DESTROYED;
1412 1530
1413 if (coro->flags & CF_READY) 1531 if (coro->flags & CF_READY)
1414 { 1532 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1533 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1534 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1535 --coro_nready;
1419 UNLOCK;
1420 } 1536 }
1421 else 1537 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1538 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423 1539
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1540 if (coro->mainstack
1425 { 1541 && coro->mainstack != main_mainstack
1426 struct coro temp; 1542 && coro->slot
1427 1543 && !PL_dirty)
1428 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1429
1430 save_perl (aTHX_ &temp);
1431 load_perl (aTHX_ coro);
1432
1433 coro_destruct (aTHX_ coro); 1544 coro_destruct_perl (aTHX_ coro);
1434
1435 load_perl (aTHX_ &temp);
1436
1437 coro->slot = 0;
1438 }
1439 1545
1440 cctx_destroy (coro->cctx); 1546 cctx_destroy (coro->cctx);
1547 SvREFCNT_dec (coro->startcv);
1441 SvREFCNT_dec (coro->args); 1548 SvREFCNT_dec (coro->args);
1549 SvREFCNT_dec (CORO_THROW);
1442 1550
1443 if (coro->next) coro->next->prev = coro->prev; 1551 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1552 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1553 if (coro == coro_first) coro_first = coro->next;
1446 1554
… …
1500 1608
1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1609 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1502 TRANSFER (ta, 1); 1610 TRANSFER (ta, 1);
1503} 1611}
1504 1612
1613/*****************************************************************************/
1614/* gensub: simple closure generation utility */
1615
1616#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1617
1618/* create a closure from XS, returns a code reference */
1619/* the arg can be accessed via GENSUB_ARG from the callback */
1620/* the callback must use dXSARGS/XSRETURN */
1621static SV *
1622gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1623{
1624 CV *cv = (CV *)newSV (0);
1625
1626 sv_upgrade ((SV *)cv, SVt_PVCV);
1627
1628 CvANON_on (cv);
1629 CvISXSUB_on (cv);
1630 CvXSUB (cv) = xsub;
1631 GENSUB_ARG = arg;
1632
1633 return newRV_noinc ((SV *)cv);
1634}
1635
1505/** Coro ********************************************************************/ 1636/** Coro ********************************************************************/
1506 1637
1507static void 1638INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1639coro_enq (pTHX_ struct coro *coro)
1509{ 1640{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1641 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1511}
1512 1642
1513static SV * 1643 SvREFCNT_inc_NN (coro->hv);
1644
1645 coro->next_ready = 0;
1646 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1647 ready [1] = coro;
1648}
1649
1650INLINE struct coro *
1514coro_deq (pTHX) 1651coro_deq (pTHX)
1515{ 1652{
1516 int prio; 1653 int prio;
1517 1654
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1655 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1519 if (AvFILLp (coro_ready [prio]) >= 0) 1656 {
1520 return av_shift (coro_ready [prio]); 1657 struct coro **ready = coro_ready [prio];
1658
1659 if (ready [0])
1660 {
1661 struct coro *coro = ready [0];
1662 ready [0] = coro->next_ready;
1663 return coro;
1664 }
1665 }
1521 1666
1522 return 0; 1667 return 0;
1523} 1668}
1524 1669
1525static int 1670static int
… …
1527{ 1672{
1528 struct coro *coro; 1673 struct coro *coro;
1529 SV *sv_hook; 1674 SV *sv_hook;
1530 void (*xs_hook)(void); 1675 void (*xs_hook)(void);
1531 1676
1532 if (SvROK (coro_sv))
1533 coro_sv = SvRV (coro_sv);
1534
1535 coro = SvSTATE (coro_sv); 1677 coro = SvSTATE (coro_sv);
1536 1678
1537 if (coro->flags & CF_READY) 1679 if (coro->flags & CF_READY)
1538 return 0; 1680 return 0;
1539 1681
1540 coro->flags |= CF_READY; 1682 coro->flags |= CF_READY;
1541 1683
1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1684 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1685 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546 1686
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1687 coro_enq (aTHX_ coro);
1548 ++coro_nready; 1688 ++coro_nready;
1549 1689
1550 UNLOCK;
1551
1552 if (sv_hook) 1690 if (sv_hook)
1553 { 1691 {
1554 dSP; 1692 dSP;
1555 1693
1556 ENTER; 1694 ENTER;
1557 SAVETMPS; 1695 SAVETMPS;
1558 1696
1559 PUSHMARK (SP); 1697 PUSHMARK (SP);
1560 PUTBACK; 1698 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD); 1699 call_sv (sv_hook, G_VOID | G_DISCARD);
1562 SPAGAIN;
1563 1700
1564 FREETMPS; 1701 FREETMPS;
1565 LEAVE; 1702 LEAVE;
1566 } 1703 }
1567 1704
… …
1575api_is_ready (pTHX_ SV *coro_sv) 1712api_is_ready (pTHX_ SV *coro_sv)
1576{ 1713{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1714 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1715}
1579 1716
1717/* expects to own a reference to next->hv */
1580INLINE void 1718INLINE void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1719prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1720{
1583 SV *prev_sv, *next_sv;
1584
1585 for (;;)
1586 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX);
1589
1590 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv))
1592 {
1593 dSP;
1594 UNLOCK;
1595
1596 ENTER;
1597 SAVETMPS;
1598
1599 PUSHMARK (SP);
1600 PUTBACK;
1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1602 SPAGAIN;
1603
1604 FREETMPS;
1605 LEAVE;
1606 continue;
1607 }
1608
1609 ta->next = SvSTATE (next_sv);
1610
1611 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */
1617 continue;
1618 }
1619
1620 --coro_nready;
1621 UNLOCK;
1622 break;
1623 }
1624
1625 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current); 1721 SV *prev_sv = SvRV (coro_current);
1722
1627 ta->prev = SvSTATE (prev_sv); 1723 ta->prev = SvSTATE_hv (prev_sv);
1724 ta->next = next;
1725
1628 TRANSFER_CHECK (*ta); 1726 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1727
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1728 SvRV_set (coro_current, (SV *)next->hv);
1632 1729
1633 LOCK;
1634 free_coro_mortal (aTHX); 1730 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1731 coro_mortal = prev_sv;
1636 UNLOCK; 1732}
1733
1734static void
1735prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1736{
1737 for (;;)
1738 {
1739 struct coro *next = coro_deq (aTHX);
1740
1741 if (expect_true (next))
1742 {
1743 /* cannot transfer to destroyed coros, skip and look for next */
1744 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1745 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1746 else
1747 {
1748 next->flags &= ~CF_READY;
1749 --coro_nready;
1750
1751 prepare_schedule_to (aTHX_ ta, next);
1752 break;
1753 }
1754 }
1755 else
1756 {
1757 /* nothing to schedule: call the idle handler */
1758 if (SvROK (sv_idle)
1759 && SvOBJECT (SvRV (sv_idle)))
1760 {
1761 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1762 api_ready (aTHX_ SvRV (sv_idle));
1763 --coro_nready;
1764 }
1765 else
1766 {
1767 dSP;
1768
1769 ENTER;
1770 SAVETMPS;
1771
1772 PUSHMARK (SP);
1773 PUTBACK;
1774 call_sv (sv_idle, G_VOID | G_DISCARD);
1775
1776 FREETMPS;
1777 LEAVE;
1778 }
1779 }
1780 }
1637} 1781}
1638 1782
1639INLINE void 1783INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1784prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1785{
… …
1662{ 1806{
1663 struct coro_transfer_args ta; 1807 struct coro_transfer_args ta;
1664 1808
1665 prepare_schedule (aTHX_ &ta); 1809 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1810 TRANSFER (ta, 1);
1811}
1812
1813static void
1814api_schedule_to (pTHX_ SV *coro_sv)
1815{
1816 struct coro_transfer_args ta;
1817 struct coro *next = SvSTATE (coro_sv);
1818
1819 SvREFCNT_inc_NN (coro_sv);
1820 prepare_schedule_to (aTHX_ &ta, next);
1667} 1821}
1668 1822
1669static int 1823static int
1670api_cede (pTHX) 1824api_cede (pTHX)
1671{ 1825{
… …
1700static void 1854static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 1855api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 1856{
1703 struct coro *coro = SvSTATE (coro_sv); 1857 struct coro *coro = SvSTATE (coro_sv);
1704 1858
1859 if (coro->flags & CF_RUNNING)
1860 croak ("cannot enable tracing on a running coroutine, caught");
1861
1705 if (flags & CC_TRACE) 1862 if (flags & CC_TRACE)
1706 { 1863 {
1707 if (!coro->cctx) 1864 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 1865 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 1866 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 1867 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 1868
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1869 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 1870 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1871 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 1872 {
… …
1718 if (coro->flags & CF_RUNNING) 1875 if (coro->flags & CF_RUNNING)
1719 PL_runops = RUNOPS_DEFAULT; 1876 PL_runops = RUNOPS_DEFAULT;
1720 else 1877 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1878 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1879 }
1880}
1881
1882static void
1883coro_call_on_destroy (pTHX_ struct coro *coro)
1884{
1885 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1886 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1887
1888 if (on_destroyp)
1889 {
1890 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1891
1892 while (AvFILLp (on_destroy) >= 0)
1893 {
1894 dSP; /* don't disturb outer sp */
1895 SV *cb = av_pop (on_destroy);
1896
1897 PUSHMARK (SP);
1898
1899 if (statusp)
1900 {
1901 int i;
1902 AV *status = (AV *)SvRV (*statusp);
1903 EXTEND (SP, AvFILLp (status) + 1);
1904
1905 for (i = 0; i <= AvFILLp (status); ++i)
1906 PUSHs (AvARRAY (status)[i]);
1907 }
1908
1909 PUTBACK;
1910 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1911 }
1912 }
1913}
1914
1915static void
1916slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1917{
1918 int i;
1919 HV *hv = (HV *)SvRV (coro_current);
1920 AV *av = newAV ();
1921
1922 av_extend (av, items - 1);
1923 for (i = 0; i < items; ++i)
1924 av_push (av, SvREFCNT_inc_NN (arg [i]));
1925
1926 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1927
1928 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1929 api_ready (aTHX_ sv_manager);
1930
1931 frame->prepare = prepare_schedule;
1932 frame->check = slf_check_repeat;
1933
1934 /* as a minor optimisation, we could unwind all stacks here */
1935 /* but that puts extra pressure on pp_slf, and is not worth much */
1936 /*coro_unwind_stacks (aTHX);*/
1937}
1938
1939/*****************************************************************************/
1940/* async pool handler */
1941
1942static int
1943slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1944{
1945 HV *hv = (HV *)SvRV (coro_current);
1946 struct coro *coro = (struct coro *)frame->data;
1947
1948 if (!coro->invoke_cb)
1949 return 1; /* loop till we have invoke */
1950 else
1951 {
1952 hv_store (hv, "desc", sizeof ("desc") - 1,
1953 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1954
1955 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1956
1957 {
1958 dSP;
1959 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1960 PUTBACK;
1961 }
1962
1963 SvREFCNT_dec (GvAV (PL_defgv));
1964 GvAV (PL_defgv) = coro->invoke_av;
1965 coro->invoke_av = 0;
1966
1967 return 0;
1968 }
1969}
1970
1971static void
1972slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1973{
1974 HV *hv = (HV *)SvRV (coro_current);
1975 struct coro *coro = SvSTATE_hv ((SV *)hv);
1976
1977 if (expect_true (coro->saved_deffh))
1978 {
1979 /* subsequent iteration */
1980 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1981 coro->saved_deffh = 0;
1982
1983 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1984 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1985 {
1986 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1987 coro->invoke_av = newAV ();
1988
1989 frame->prepare = prepare_nop;
1990 }
1991 else
1992 {
1993 av_clear (GvAV (PL_defgv));
1994 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1995
1996 coro->prio = 0;
1997
1998 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1999 api_trace (aTHX_ coro_current, 0);
2000
2001 frame->prepare = prepare_schedule;
2002 av_push (av_async_pool, SvREFCNT_inc (hv));
2003 }
2004 }
2005 else
2006 {
2007 /* first iteration, simply fall through */
2008 frame->prepare = prepare_nop;
2009 }
2010
2011 frame->check = slf_check_pool_handler;
2012 frame->data = (void *)coro;
2013}
2014
2015/*****************************************************************************/
2016/* rouse callback */
2017
2018#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2019
2020static void
2021coro_rouse_callback (pTHX_ CV *cv)
2022{
2023 dXSARGS;
2024 SV *data = (SV *)GENSUB_ARG;
2025
2026 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2027 {
2028 /* first call, set args */
2029 SV *coro = SvRV (data);
2030 AV *av = newAV ();
2031
2032 SvRV_set (data, (SV *)av);
2033
2034 /* better take a full copy of the arguments */
2035 while (items--)
2036 av_store (av, items, newSVsv (ST (items)));
2037
2038 api_ready (aTHX_ coro);
2039 SvREFCNT_dec (coro);
2040 }
2041
2042 XSRETURN_EMPTY;
2043}
2044
2045static int
2046slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2047{
2048 SV *data = (SV *)frame->data;
2049
2050 if (CORO_THROW)
2051 return 0;
2052
2053 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2054 return 1;
2055
2056 /* now push all results on the stack */
2057 {
2058 dSP;
2059 AV *av = (AV *)SvRV (data);
2060 int i;
2061
2062 EXTEND (SP, AvFILLp (av) + 1);
2063 for (i = 0; i <= AvFILLp (av); ++i)
2064 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2065
2066 /* we have stolen the elements, so set length to zero and free */
2067 AvFILLp (av) = -1;
2068 av_undef (av);
2069
2070 PUTBACK;
2071 }
2072
2073 return 0;
2074}
2075
2076static void
2077slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2078{
2079 SV *cb;
2080
2081 if (items)
2082 cb = arg [0];
2083 else
2084 {
2085 struct coro *coro = SvSTATE_current;
2086
2087 if (!coro->rouse_cb)
2088 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2089
2090 cb = sv_2mortal (coro->rouse_cb);
2091 coro->rouse_cb = 0;
2092 }
2093
2094 if (!SvROK (cb)
2095 || SvTYPE (SvRV (cb)) != SVt_PVCV
2096 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2097 croak ("Coro::rouse_wait called with illegal callback argument,");
2098
2099 {
2100 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2101 SV *data = (SV *)GENSUB_ARG;
2102
2103 frame->data = (void *)data;
2104 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2105 frame->check = slf_check_rouse_wait;
2106 }
2107}
2108
2109static SV *
2110coro_new_rouse_cb (pTHX)
2111{
2112 HV *hv = (HV *)SvRV (coro_current);
2113 struct coro *coro = SvSTATE_hv (hv);
2114 SV *data = newRV_inc ((SV *)hv);
2115 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2116
2117 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2118 SvREFCNT_dec (data); /* magicext increases the refcount */
2119
2120 SvREFCNT_dec (coro->rouse_cb);
2121 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2122
2123 return cb;
2124}
2125
2126/*****************************************************************************/
2127/* schedule-like-function opcode (SLF) */
2128
2129static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2130static const CV *slf_cv;
2131static SV **slf_argv;
2132static int slf_argc, slf_arga; /* count, allocated */
2133static I32 slf_ax; /* top of stack, for restore */
2134
2135/* this restores the stack in the case we patched the entersub, to */
2136/* recreate the stack frame as perl will on following calls */
2137/* since entersub cleared the stack */
2138static OP *
2139pp_restore (pTHX)
2140{
2141 int i;
2142 SV **SP = PL_stack_base + slf_ax;
2143
2144 PUSHMARK (SP);
2145
2146 EXTEND (SP, slf_argc + 1);
2147
2148 for (i = 0; i < slf_argc; ++i)
2149 PUSHs (sv_2mortal (slf_argv [i]));
2150
2151 PUSHs ((SV *)CvGV (slf_cv));
2152
2153 RETURNOP (slf_restore.op_first);
2154}
2155
2156static void
2157slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2158{
2159 SV **arg = (SV **)slf_frame.data;
2160
2161 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2162}
2163
2164static void
2165slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2166{
2167 if (items != 2)
2168 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2169
2170 frame->prepare = slf_prepare_transfer;
2171 frame->check = slf_check_nop;
2172 frame->data = (void *)arg; /* let's hope it will stay valid */
2173}
2174
2175static void
2176slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2177{
2178 frame->prepare = prepare_schedule;
2179 frame->check = slf_check_nop;
2180}
2181
2182static void
2183slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2184{
2185 struct coro *next = (struct coro *)slf_frame.data;
2186
2187 SvREFCNT_inc_NN (next->hv);
2188 prepare_schedule_to (aTHX_ ta, next);
2189}
2190
2191static void
2192slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2193{
2194 if (!items)
2195 croak ("Coro::schedule_to expects a coroutine argument, caught");
2196
2197 frame->data = (void *)SvSTATE (arg [0]);
2198 frame->prepare = slf_prepare_schedule_to;
2199 frame->check = slf_check_nop;
2200}
2201
2202static void
2203slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2204{
2205 api_ready (aTHX_ SvRV (coro_current));
2206
2207 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2208}
2209
2210static void
2211slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2212{
2213 frame->prepare = prepare_cede;
2214 frame->check = slf_check_nop;
2215}
2216
2217static void
2218slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2219{
2220 frame->prepare = prepare_cede_notself;
2221 frame->check = slf_check_nop;
2222}
2223
2224/*
2225 * these not obviously related functions are all rolled into one
2226 * function to increase chances that they all will call transfer with the same
2227 * stack offset
2228 * SLF stands for "schedule-like-function".
2229 */
2230static OP *
2231pp_slf (pTHX)
2232{
2233 I32 checkmark; /* mark SP to see how many elements check has pushed */
2234
2235 /* set up the slf frame, unless it has already been set-up */
2236 /* the latter happens when a new coro has been started */
2237 /* or when a new cctx was attached to an existing coroutine */
2238 if (expect_true (!slf_frame.prepare))
2239 {
2240 /* first iteration */
2241 dSP;
2242 SV **arg = PL_stack_base + TOPMARK + 1;
2243 int items = SP - arg; /* args without function object */
2244 SV *gv = *sp;
2245
2246 /* do a quick consistency check on the "function" object, and if it isn't */
2247 /* for us, divert to the real entersub */
2248 if (SvTYPE (gv) != SVt_PVGV
2249 || !GvCV (gv)
2250 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2251 return PL_ppaddr[OP_ENTERSUB](aTHX);
2252
2253 if (!(PL_op->op_flags & OPf_STACKED))
2254 {
2255 /* ampersand-form of call, use @_ instead of stack */
2256 AV *av = GvAV (PL_defgv);
2257 arg = AvARRAY (av);
2258 items = AvFILLp (av) + 1;
2259 }
2260
2261 /* now call the init function, which needs to set up slf_frame */
2262 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2263 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2264
2265 /* pop args */
2266 SP = PL_stack_base + POPMARK;
2267
2268 PUTBACK;
2269 }
2270
2271 /* now that we have a slf_frame, interpret it! */
2272 /* we use a callback system not to make the code needlessly */
2273 /* complicated, but so we can run multiple perl coros from one cctx */
2274
2275 do
2276 {
2277 struct coro_transfer_args ta;
2278
2279 slf_frame.prepare (aTHX_ &ta);
2280 TRANSFER (ta, 0);
2281
2282 checkmark = PL_stack_sp - PL_stack_base;
2283 }
2284 while (slf_frame.check (aTHX_ &slf_frame));
2285
2286 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2287
2288 /* exception handling */
2289 if (expect_false (CORO_THROW))
2290 {
2291 SV *exception = sv_2mortal (CORO_THROW);
2292
2293 CORO_THROW = 0;
2294 sv_setsv (ERRSV, exception);
2295 croak (0);
2296 }
2297
2298 /* return value handling - mostly like entersub */
2299 /* make sure we put something on the stack in scalar context */
2300 if (GIMME_V == G_SCALAR)
2301 {
2302 dSP;
2303 SV **bot = PL_stack_base + checkmark;
2304
2305 if (sp == bot) /* too few, push undef */
2306 bot [1] = &PL_sv_undef;
2307 else if (sp != bot + 1) /* too many, take last one */
2308 bot [1] = *sp;
2309
2310 SP = bot + 1;
2311
2312 PUTBACK;
2313 }
2314
2315 return NORMAL;
2316}
2317
2318static void
2319api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2320{
2321 int i;
2322 SV **arg = PL_stack_base + ax;
2323 int items = PL_stack_sp - arg + 1;
2324
2325 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2326
2327 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2328 && PL_op->op_ppaddr != pp_slf)
2329 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2330
2331 CvFLAGS (cv) |= CVf_SLF;
2332 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2333 slf_cv = cv;
2334
2335 /* we patch the op, and then re-run the whole call */
2336 /* we have to put the same argument on the stack for this to work */
2337 /* and this will be done by pp_restore */
2338 slf_restore.op_next = (OP *)&slf_restore;
2339 slf_restore.op_type = OP_CUSTOM;
2340 slf_restore.op_ppaddr = pp_restore;
2341 slf_restore.op_first = PL_op;
2342
2343 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2344
2345 if (PL_op->op_flags & OPf_STACKED)
2346 {
2347 if (items > slf_arga)
2348 {
2349 slf_arga = items;
2350 free (slf_argv);
2351 slf_argv = malloc (slf_arga * sizeof (SV *));
2352 }
2353
2354 slf_argc = items;
2355
2356 for (i = 0; i < items; ++i)
2357 slf_argv [i] = SvREFCNT_inc (arg [i]);
2358 }
2359 else
2360 slf_argc = 0;
2361
2362 PL_op->op_ppaddr = pp_slf;
2363 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2364
2365 PL_op = (OP *)&slf_restore;
2366}
2367
2368/*****************************************************************************/
2369/* dynamic wind */
2370
2371static void
2372on_enterleave_call (pTHX_ SV *cb)
2373{
2374 dSP;
2375
2376 PUSHSTACK;
2377
2378 PUSHMARK (SP);
2379 PUTBACK;
2380 call_sv (cb, G_VOID | G_DISCARD);
2381 SPAGAIN;
2382
2383 POPSTACK;
2384}
2385
2386static SV *
2387coro_avp_pop_and_free (pTHX_ AV **avp)
2388{
2389 AV *av = *avp;
2390 SV *res = av_pop (av);
2391
2392 if (AvFILLp (av) < 0)
2393 {
2394 *avp = 0;
2395 SvREFCNT_dec (av);
2396 }
2397
2398 return res;
2399}
2400
2401static void
2402coro_pop_on_enter (pTHX_ void *coro)
2403{
2404 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2405 SvREFCNT_dec (cb);
2406}
2407
2408static void
2409coro_pop_on_leave (pTHX_ void *coro)
2410{
2411 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2412 on_enterleave_call (aTHX_ sv_2mortal (cb));
1723} 2413}
1724 2414
1725/*****************************************************************************/ 2415/*****************************************************************************/
1726/* PerlIO::cede */ 2416/* PerlIO::cede */
1727 2417
… …
1796 PerlIOBuf_get_cnt, 2486 PerlIOBuf_get_cnt,
1797 PerlIOBuf_set_ptrcnt, 2487 PerlIOBuf_set_ptrcnt,
1798}; 2488};
1799 2489
1800/*****************************************************************************/ 2490/*****************************************************************************/
2491/* Coro::Semaphore & Coro::Signal */
1801 2492
1802static const CV *slf_cv; /* for quick consistency check */
1803
1804static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1805static SV *slf_arg0;
1806static SV *slf_arg1;
1807static SV *slf_arg2;
1808
1809/* this restores the stack in the case we patched the entersub, to */
1810/* recreate the stack frame as perl will on following calls */
1811/* since entersub cleared the stack */
1812static OP * 2493static SV *
1813pp_restore (pTHX) 2494coro_waitarray_new (pTHX_ int count)
1814{ 2495{
1815 dSP; 2496 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2497 AV *av = newAV ();
2498 SV **ary;
1816 2499
1817 PUSHMARK (SP); 2500 /* unfortunately, building manually saves memory */
2501 Newx (ary, 2, SV *);
2502 AvALLOC (av) = ary;
2503#if PERL_VERSION_ATLEAST (5,10,0)
2504 AvARRAY (av) = ary;
2505#else
2506 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2507 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2508 SvPVX ((SV *)av) = (char *)ary;
2509#endif
2510 AvMAX (av) = 1;
2511 AvFILLp (av) = 0;
2512 ary [0] = newSViv (count);
1818 2513
1819 EXTEND (SP, 3); 2514 return newRV_noinc ((SV *)av);
1820 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1821 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1822 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1823 PUSHs ((SV *)CvGV (slf_cv));
1824
1825 RETURNOP (slf_restore.op_first);
1826} 2515}
1827 2516
1828static void 2517/* semaphore */
1829slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1830{
1831 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1832}
1833 2518
1834static void 2519static void
1835slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2520coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1836{ 2521{
1837 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2522 SV *count_sv = AvARRAY (av)[0];
2523 IV count = SvIVX (count_sv);
1838 2524
1839 frame->prepare = slf_prepare_set_stacklevel; 2525 count += adjust;
1840 frame->check = slf_check_nop; 2526 SvIVX (count_sv) = count;
1841 frame->data = (void *)SvIV (arg [0]);
1842}
1843 2527
1844static void 2528 /* now wake up as many waiters as are expected to lock */
1845slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2529 while (count > 0 && AvFILLp (av) > 0)
1846{
1847 SV **arg = (SV **)slf_frame.data;
1848
1849 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1850}
1851
1852static void
1853slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1854{
1855 if (items != 2)
1856 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1857
1858 frame->prepare = slf_prepare_transfer;
1859 frame->check = slf_check_nop;
1860 frame->data = (void *)arg; /* let's hope it will stay valid */
1861}
1862
1863static void
1864slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1865{
1866 frame->prepare = prepare_schedule;
1867 frame->check = slf_check_nop;
1868}
1869
1870static void
1871slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1872{
1873 frame->prepare = prepare_cede;
1874 frame->check = slf_check_nop;
1875}
1876
1877static void
1878slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1879{
1880 frame->prepare = prepare_cede_notself;
1881 frame->check = slf_check_nop;
1882}
1883
1884/* we hijack an hopefully unused CV flag for our purposes */
1885#define CVf_SLF 0x4000
1886
1887/*
1888 * these not obviously related functions are all rolled into one
1889 * function to increase chances that they all will call transfer with the same
1890 * stack offset
1891 * SLF stands for "schedule-like-function".
1892 */
1893static OP *
1894pp_slf (pTHX)
1895{
1896 I32 checkmark; /* mark SP to see how many elements check has pushed */
1897
1898 /* set up the slf frame, unless it has already been set-up */
1899 /* the latter happens when a new coro has been started */
1900 /* or when a new cctx was attached to an existing coroutine */
1901 if (expect_true (!slf_frame.prepare))
1902 { 2530 {
1903 /* first iteration */ 2531 SV *cb;
1904 dSP;
1905 SV **arg = PL_stack_base + TOPMARK + 1;
1906 int items = SP - arg; /* args without function object */
1907 SV *gv = *sp;
1908 2532
1909 /* do a quick consistency check on the "function" object, and if it isn't */ 2533 /* swap first two elements so we can shift a waiter */
1910 /* for us, divert to the real entersub */ 2534 AvARRAY (av)[0] = AvARRAY (av)[1];
1911 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2535 AvARRAY (av)[1] = count_sv;
1912 return PL_ppaddr[OP_ENTERSUB](aTHX); 2536 cb = av_shift (av);
1913 2537
1914 /* pop args */ 2538 if (SvOBJECT (cb))
1915 SP = PL_stack_base + POPMARK;
1916
1917 if (!(PL_op->op_flags & OPf_STACKED))
1918 { 2539 {
1919 /* ampersand-form of call, use @_ instead of stack */ 2540 api_ready (aTHX_ cb);
1920 AV *av = GvAV (PL_defgv); 2541 --count;
1921 arg = AvARRAY (av);
1922 items = AvFILLp (av) + 1;
1923 } 2542 }
1924 2543 else if (SvTYPE (cb) == SVt_PVCV)
1925 PUTBACK;
1926
1927 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, GvCV (gv), arg, items);
1928 }
1929
1930 /* now interpret the slf_frame */
1931 /* we use a callback system not to make the code needlessly */
1932 /* complicated, but so we can run multiple perl coros from one cctx */
1933
1934 do
1935 {
1936 struct coro_transfer_args ta;
1937
1938 slf_frame.prepare (aTHX_ &ta);
1939 TRANSFER (ta, 0);
1940
1941 checkmark = PL_stack_sp - PL_stack_base;
1942 }
1943 while (slf_frame.check (aTHX_ &slf_frame));
1944
1945 {
1946 dSP;
1947 SV **bot = PL_stack_base + checkmark;
1948 int gimme = GIMME_V;
1949
1950 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1951
1952 /* make sure we put something on the stack in scalar context */
1953 if (gimme == G_SCALAR)
1954 { 2544 {
1955 if (sp == bot) 2545 dSP;
1956 XPUSHs (&PL_sv_undef); 2546 PUSHMARK (SP);
1957 2547 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1958 SP = bot + 1; 2548 PUTBACK;
2549 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1959 } 2550 }
1960 2551
1961 PUTBACK; 2552 SvREFCNT_dec (cb);
1962 } 2553 }
1963
1964 return NORMAL;
1965} 2554}
1966 2555
1967static void 2556static void
1968api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2557coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1969{ 2558{
1970 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2559 /* call $sem->adjust (0) to possibly wake up some other waiters */
1971 2560 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
1972 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1973 && PL_op->op_ppaddr != pp_slf)
1974 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1975
1976 if (items > 3)
1977 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1978
1979 CvFLAGS (cv) |= CVf_SLF;
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_NULL;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1992 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1993 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1994
1995 PL_op->op_ppaddr = pp_slf;
1996
1997 PL_op = (OP *)&slf_restore;
1998} 2561}
1999
2000/*****************************************************************************/
2001 2562
2002static int 2563static int
2003slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2564slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2004{ 2565{
2005 AV *av = (AV *)frame->data; 2566 AV *av = (AV *)frame->data;
2006 SV *count_sv = AvARRAY (av)[0]; 2567 SV *count_sv = AvARRAY (av)[0];
2007 2568
2569 /* if we are about to throw, don't actually acquire the lock, just throw */
2570 if (CORO_THROW)
2571 return 0;
2008 if (SvIVX (count_sv) > 0) 2572 else if (SvIVX (count_sv) > 0)
2009 { 2573 {
2574 SvSTATE_current->on_destroy = 0;
2575
2576 if (acquire)
2010 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2577 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2578 else
2579 coro_semaphore_adjust (aTHX_ av, 0);
2580
2011 return 0; 2581 return 0;
2012 } 2582 }
2013 else 2583 else
2014 { 2584 {
2015 int i; 2585 int i;
… …
2024 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2594 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2025 return 1; 2595 return 1;
2026 } 2596 }
2027} 2597}
2028 2598
2029static void 2599static int
2600slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2601{
2602 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2603}
2604
2605static int
2606slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2607{
2608 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2609}
2610
2611static void
2030slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2612slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2031{ 2613{
2032 AV *av = (AV *)SvRV (arg [0]); 2614 AV *av = (AV *)SvRV (arg [0]);
2033 2615
2034 if (SvIVX (AvARRAY (av)[0]) > 0) 2616 if (SvIVX (AvARRAY (av)[0]) > 0)
2035 { 2617 {
… …
2040 { 2622 {
2041 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2623 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2042 2624
2043 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2625 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2044 frame->prepare = prepare_schedule; 2626 frame->prepare = prepare_schedule;
2045 }
2046 2627
2628 /* to avoid race conditions when a woken-up coro gets terminated */
2629 /* we arrange for a temporary on_destroy that calls adjust (0) */
2630 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2631 }
2632}
2633
2634static void
2635slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2636{
2637 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2047 frame->check = slf_check_semaphore_down; 2638 frame->check = slf_check_semaphore_down;
2639}
2048 2640
2641static void
2642slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2643{
2644 if (items >= 2)
2645 {
2646 /* callback form */
2647 AV *av = (AV *)SvRV (arg [0]);
2648 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2649
2650 av_push (av, SvREFCNT_inc_NN (cb_cv));
2651
2652 if (SvIVX (AvARRAY (av)[0]) > 0)
2653 coro_semaphore_adjust (aTHX_ av, 0);
2654
2655 frame->prepare = prepare_nop;
2656 frame->check = slf_check_nop;
2657 }
2658 else
2659 {
2660 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2661 frame->check = slf_check_semaphore_wait;
2662 }
2663}
2664
2665/* signal */
2666
2667static void
2668coro_signal_wake (pTHX_ AV *av, int count)
2669{
2670 SvIVX (AvARRAY (av)[0]) = 0;
2671
2672 /* now signal count waiters */
2673 while (count > 0 && AvFILLp (av) > 0)
2674 {
2675 SV *cb;
2676
2677 /* swap first two elements so we can shift a waiter */
2678 cb = AvARRAY (av)[0];
2679 AvARRAY (av)[0] = AvARRAY (av)[1];
2680 AvARRAY (av)[1] = cb;
2681
2682 cb = av_shift (av);
2683
2684 if (SvTYPE (cb) == SVt_PVCV)
2685 {
2686 dSP;
2687 PUSHMARK (SP);
2688 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2689 PUTBACK;
2690 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2691 }
2692 else
2693 {
2694 api_ready (aTHX_ cb);
2695 sv_setiv (cb, 0); /* signal waiter */
2696 }
2697
2698 SvREFCNT_dec (cb);
2699
2700 --count;
2701 }
2702}
2703
2704static int
2705slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2706{
2707 /* if we are about to throw, also stop waiting */
2708 return SvROK ((SV *)frame->data) && !CORO_THROW;
2709}
2710
2711static void
2712slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2713{
2714 AV *av = (AV *)SvRV (arg [0]);
2715
2716 if (items >= 2)
2717 {
2718 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2719 av_push (av, SvREFCNT_inc_NN (cb_cv));
2720
2721 if (SvIVX (AvARRAY (av)[0]))
2722 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2723
2724 frame->prepare = prepare_nop;
2725 frame->check = slf_check_nop;
2726 }
2727 else if (SvIVX (AvARRAY (av)[0]))
2728 {
2729 SvIVX (AvARRAY (av)[0]) = 0;
2730 frame->prepare = prepare_nop;
2731 frame->check = slf_check_nop;
2732 }
2733 else
2734 {
2735 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2736
2737 av_push (av, waiter);
2738
2739 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2740 frame->prepare = prepare_schedule;
2741 frame->check = slf_check_signal_wait;
2742 }
2049} 2743}
2050 2744
2051/*****************************************************************************/ 2745/*****************************************************************************/
2746/* Coro::AIO */
2052 2747
2053#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2748#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2054 2749
2055/* create a closure from XS, returns a code reference */ 2750/* helper storage struct */
2056/* the arg can be accessed via GENSUB_ARG from the callback */ 2751struct io_state
2057/* the callback must use dXSARGS/XSRETURN */
2058static SV *
2059gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2060{ 2752{
2061 CV *cv = (CV *)NEWSV (0, 0); 2753 int errorno;
2754 I32 laststype; /* U16 in 5.10.0 */
2755 int laststatval;
2756 Stat_t statcache;
2757};
2062 2758
2759static void
2760coro_aio_callback (pTHX_ CV *cv)
2761{
2762 dXSARGS;
2763 AV *state = (AV *)GENSUB_ARG;
2764 SV *coro = av_pop (state);
2765 SV *data_sv = newSV (sizeof (struct io_state));
2766
2767 av_extend (state, items - 1);
2768
2063 sv_upgrade ((SV *)cv, SVt_PVCV); 2769 sv_upgrade (data_sv, SVt_PV);
2770 SvCUR_set (data_sv, sizeof (struct io_state));
2771 SvPOK_only (data_sv);
2064 2772
2065 CvANON_on (cv); 2773 {
2066 CvISXSUB_on (cv); 2774 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2067 CvXSUB (cv) = xsub;
2068 GENSUB_ARG = arg;
2069 2775
2070 return newRV_noinc ((SV *)cv); 2776 data->errorno = errno;
2777 data->laststype = PL_laststype;
2778 data->laststatval = PL_laststatval;
2779 data->statcache = PL_statcache;
2780 }
2781
2782 /* now build the result vector out of all the parameters and the data_sv */
2783 {
2784 int i;
2785
2786 for (i = 0; i < items; ++i)
2787 av_push (state, SvREFCNT_inc_NN (ST (i)));
2788 }
2789
2790 av_push (state, data_sv);
2791
2792 api_ready (aTHX_ coro);
2793 SvREFCNT_dec (coro);
2794 SvREFCNT_dec ((AV *)state);
2795}
2796
2797static int
2798slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2799{
2800 AV *state = (AV *)frame->data;
2801
2802 /* if we are about to throw, return early */
2803 /* this does not cancel the aio request, but at least */
2804 /* it quickly returns */
2805 if (CORO_THROW)
2806 return 0;
2807
2808 /* one element that is an RV? repeat! */
2809 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2810 return 1;
2811
2812 /* restore status */
2813 {
2814 SV *data_sv = av_pop (state);
2815 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2816
2817 errno = data->errorno;
2818 PL_laststype = data->laststype;
2819 PL_laststatval = data->laststatval;
2820 PL_statcache = data->statcache;
2821
2822 SvREFCNT_dec (data_sv);
2823 }
2824
2825 /* push result values */
2826 {
2827 dSP;
2828 int i;
2829
2830 EXTEND (SP, AvFILLp (state) + 1);
2831 for (i = 0; i <= AvFILLp (state); ++i)
2832 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2833
2834 PUTBACK;
2835 }
2836
2837 return 0;
2838}
2839
2840static void
2841slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2842{
2843 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2844 SV *coro_hv = SvRV (coro_current);
2845 struct coro *coro = SvSTATE_hv (coro_hv);
2846
2847 /* put our coroutine id on the state arg */
2848 av_push (state, SvREFCNT_inc_NN (coro_hv));
2849
2850 /* first see whether we have a non-zero priority and set it as AIO prio */
2851 if (coro->prio)
2852 {
2853 dSP;
2854
2855 static SV *prio_cv;
2856 static SV *prio_sv;
2857
2858 if (expect_false (!prio_cv))
2859 {
2860 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2861 prio_sv = newSViv (0);
2862 }
2863
2864 PUSHMARK (SP);
2865 sv_setiv (prio_sv, coro->prio);
2866 XPUSHs (prio_sv);
2867
2868 PUTBACK;
2869 call_sv (prio_cv, G_VOID | G_DISCARD);
2870 }
2871
2872 /* now call the original request */
2873 {
2874 dSP;
2875 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2876 int i;
2877
2878 PUSHMARK (SP);
2879
2880 /* first push all args to the stack */
2881 EXTEND (SP, items + 1);
2882
2883 for (i = 0; i < items; ++i)
2884 PUSHs (arg [i]);
2885
2886 /* now push the callback closure */
2887 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2888
2889 /* now call the AIO function - we assume our request is uncancelable */
2890 PUTBACK;
2891 call_sv ((SV *)req, G_VOID | G_DISCARD);
2892 }
2893
2894 /* now that the requets is going, we loop toll we have a result */
2895 frame->data = (void *)state;
2896 frame->prepare = prepare_schedule;
2897 frame->check = slf_check_aio_req;
2898}
2899
2900static void
2901coro_aio_req_xs (pTHX_ CV *cv)
2902{
2903 dXSARGS;
2904
2905 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2906
2907 XSRETURN_EMPTY;
2071} 2908}
2072 2909
2073/*****************************************************************************/ 2910/*****************************************************************************/
2074 2911
2912#if CORO_CLONE
2913# include "clone.c"
2914#endif
2915
2075MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2916MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2076 2917
2077PROTOTYPES: DISABLE 2918PROTOTYPES: DISABLE
2078 2919
2079BOOT: 2920BOOT:
2080{ 2921{
2081#ifdef USE_ITHREADS 2922#ifdef USE_ITHREADS
2082 MUTEX_INIT (&coro_lock);
2083# if CORO_PTHREAD 2923# if CORO_PTHREAD
2084 coro_thx = PERL_GET_CONTEXT; 2924 coro_thx = PERL_GET_CONTEXT;
2085# endif 2925# endif
2086#endif 2926#endif
2087 BOOT_PAGESIZE; 2927 BOOT_PAGESIZE;
2928
2929 cctx_current = cctx_new_empty ();
2088 2930
2089 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2931 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2090 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2932 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2091 2933
2092 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2934 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2107 main_mainstack = PL_mainstack; 2949 main_mainstack = PL_mainstack;
2108 main_top_env = PL_top_env; 2950 main_top_env = PL_top_env;
2109 2951
2110 while (main_top_env->je_prev) 2952 while (main_top_env->je_prev)
2111 main_top_env = main_top_env->je_prev; 2953 main_top_env = main_top_env->je_prev;
2954
2955 {
2956 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2957
2958 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2959 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2960
2961 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2962 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2963 }
2112 2964
2113 coroapi.ver = CORO_API_VERSION; 2965 coroapi.ver = CORO_API_VERSION;
2114 coroapi.rev = CORO_API_REVISION; 2966 coroapi.rev = CORO_API_REVISION;
2115 2967
2116 coroapi.transfer = api_transfer; 2968 coroapi.transfer = api_transfer;
… …
2129 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 2981 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2130 2982
2131 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 2983 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2132 } 2984 }
2133 2985
2134 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2986 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2135} 2987}
2136 2988
2137SV * 2989SV *
2138new (char *klass, ...) 2990new (char *klass, ...)
2991 ALIAS:
2992 Coro::new = 1
2139 CODE: 2993 CODE:
2140{ 2994{
2141 struct coro *coro; 2995 struct coro *coro;
2142 MAGIC *mg; 2996 MAGIC *mg;
2143 HV *hv; 2997 HV *hv;
2998 CV *cb;
2144 int i; 2999 int i;
3000
3001 if (items > 1)
3002 {
3003 cb = coro_sv_2cv (aTHX_ ST (1));
3004
3005 if (!ix)
3006 {
3007 if (CvISXSUB (cb))
3008 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3009
3010 if (!CvROOT (cb))
3011 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3012 }
3013 }
2145 3014
2146 Newz (0, coro, 1, struct coro); 3015 Newz (0, coro, 1, struct coro);
2147 coro->args = newAV (); 3016 coro->args = newAV ();
2148 coro->flags = CF_NEW; 3017 coro->flags = CF_NEW;
2149 3018
… …
2154 coro->hv = hv = newHV (); 3023 coro->hv = hv = newHV ();
2155 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 3024 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2156 mg->mg_flags |= MGf_DUP; 3025 mg->mg_flags |= MGf_DUP;
2157 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3026 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2158 3027
3028 if (items > 1)
3029 {
2159 av_extend (coro->args, items - 1); 3030 av_extend (coro->args, items - 1 + ix - 1);
3031
3032 if (ix)
3033 {
3034 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3035 cb = cv_coro_run;
3036 }
3037
3038 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3039
2160 for (i = 1; i < items; i++) 3040 for (i = 2; i < items; i++)
2161 av_push (coro->args, newSVsv (ST (i))); 3041 av_push (coro->args, newSVsv (ST (i)));
3042 }
2162} 3043}
2163 OUTPUT: 3044 OUTPUT:
2164 RETVAL 3045 RETVAL
2165
2166void
2167_set_stacklevel (...)
2168 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2170 3046
2171void 3047void
2172transfer (...) 3048transfer (...)
2173 PROTOTYPE: $$ 3049 PROTOTYPE: $$
2174 CODE: 3050 CODE:
2175 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3051 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2176 3052
2177bool 3053bool
2178_destroy (SV *coro_sv) 3054_destroy (SV *coro_sv)
2179 CODE: 3055 CODE:
2180 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3056 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2184void 3060void
2185_exit (int code) 3061_exit (int code)
2186 PROTOTYPE: $ 3062 PROTOTYPE: $
2187 CODE: 3063 CODE:
2188 _exit (code); 3064 _exit (code);
3065
3066SV *
3067clone (Coro::State coro)
3068 CODE:
3069{
3070#if CORO_CLONE
3071 struct coro *ncoro = coro_clone (aTHX_ coro);
3072 MAGIC *mg;
3073 /* TODO: too much duplication */
3074 ncoro->hv = newHV ();
3075 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3076 mg->mg_flags |= MGf_DUP;
3077 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3078#else
3079 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3080#endif
3081}
3082 OUTPUT:
3083 RETVAL
2189 3084
2190int 3085int
2191cctx_stacksize (int new_stacksize = 0) 3086cctx_stacksize (int new_stacksize = 0)
2192 PROTOTYPE: ;$ 3087 PROTOTYPE: ;$
2193 CODE: 3088 CODE:
… …
2243 eval = 1 3138 eval = 1
2244 CODE: 3139 CODE:
2245{ 3140{
2246 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3141 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2247 { 3142 {
2248 struct coro temp; 3143 struct coro *current = SvSTATE_current;
2249 3144
2250 if (!(coro->flags & CF_RUNNING)) 3145 if (current != coro)
2251 { 3146 {
2252 PUTBACK; 3147 PUTBACK;
2253 save_perl (aTHX_ &temp); 3148 save_perl (aTHX_ current);
2254 load_perl (aTHX_ coro); 3149 load_perl (aTHX_ coro);
3150 SPAGAIN;
2255 } 3151 }
2256 3152
2257 {
2258 dSP;
2259 ENTER;
2260 SAVETMPS;
2261 PUTBACK;
2262 PUSHSTACK; 3153 PUSHSTACK;
3154
2263 PUSHMARK (SP); 3155 PUSHMARK (SP);
3156 PUTBACK;
2264 3157
2265 if (ix) 3158 if (ix)
2266 eval_sv (coderef, 0); 3159 eval_sv (coderef, 0);
2267 else 3160 else
2268 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3161 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2269 3162
2270 POPSTACK; 3163 POPSTACK;
2271 SPAGAIN; 3164 SPAGAIN;
2272 FREETMPS;
2273 LEAVE;
2274 PUTBACK;
2275 }
2276 3165
2277 if (!(coro->flags & CF_RUNNING)) 3166 if (current != coro)
2278 { 3167 {
3168 PUTBACK;
2279 save_perl (aTHX_ coro); 3169 save_perl (aTHX_ coro);
2280 load_perl (aTHX_ &temp); 3170 load_perl (aTHX_ current);
2281 SPAGAIN; 3171 SPAGAIN;
2282 } 3172 }
2283 } 3173 }
2284} 3174}
2285 3175
… …
2289 ALIAS: 3179 ALIAS:
2290 is_ready = CF_READY 3180 is_ready = CF_READY
2291 is_running = CF_RUNNING 3181 is_running = CF_RUNNING
2292 is_new = CF_NEW 3182 is_new = CF_NEW
2293 is_destroyed = CF_DESTROYED 3183 is_destroyed = CF_DESTROYED
3184 is_suspended = CF_SUSPENDED
2294 CODE: 3185 CODE:
2295 RETVAL = boolSV (coro->flags & ix); 3186 RETVAL = boolSV (coro->flags & ix);
2296 OUTPUT: 3187 OUTPUT:
2297 RETVAL 3188 RETVAL
2298 3189
2299void 3190void
2300throw (Coro::State self, SV *throw = &PL_sv_undef) 3191throw (Coro::State self, SV *throw = &PL_sv_undef)
2301 PROTOTYPE: $;$ 3192 PROTOTYPE: $;$
2302 CODE: 3193 CODE:
3194{
3195 struct coro *current = SvSTATE_current;
3196 SV **throwp = self == current ? &CORO_THROW : &self->except;
2303 SvREFCNT_dec (self->throw); 3197 SvREFCNT_dec (*throwp);
3198 SvGETMAGIC (throw);
2304 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3199 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3200}
2305 3201
2306void 3202void
2307api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3203api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2308 PROTOTYPE: $;$ 3204 PROTOTYPE: $;$
2309 C_ARGS: aTHX_ coro, flags 3205 C_ARGS: aTHX_ coro, flags
2310 3206
2311SV * 3207SV *
2312has_cctx (Coro::State coro) 3208has_cctx (Coro::State coro)
2313 PROTOTYPE: $ 3209 PROTOTYPE: $
2314 CODE: 3210 CODE:
2315 RETVAL = boolSV (!!coro->cctx); 3211 /* maybe manage the running flag differently */
3212 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2316 OUTPUT: 3213 OUTPUT:
2317 RETVAL 3214 RETVAL
2318 3215
2319int 3216int
2320is_traced (Coro::State coro) 3217is_traced (Coro::State coro)
… …
2340 3237
2341void 3238void
2342force_cctx () 3239force_cctx ()
2343 PROTOTYPE: 3240 PROTOTYPE:
2344 CODE: 3241 CODE:
2345 struct coro *coro = SvSTATE (coro_current);
2346 coro->cctx->idle_sp = 0; 3242 cctx_current->idle_sp = 0;
2347 3243
2348void 3244void
2349swap_defsv (Coro::State self) 3245swap_defsv (Coro::State self)
2350 PROTOTYPE: $ 3246 PROTOTYPE: $
2351 ALIAS: 3247 ALIAS:
… …
2359 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3255 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2360 3256
2361 SV *tmp = *src; *src = *dst; *dst = tmp; 3257 SV *tmp = *src; *src = *dst; *dst = tmp;
2362 } 3258 }
2363 3259
3260void
3261cancel (Coro::State self)
3262 CODE:
3263 coro_state_destroy (aTHX_ self);
3264 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3265
3266
2364MODULE = Coro::State PACKAGE = Coro 3267MODULE = Coro::State PACKAGE = Coro
2365 3268
2366BOOT: 3269BOOT:
2367{ 3270{
2368 int i;
2369
2370 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2371 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3271 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2372 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3272 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2373 3273 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3274 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2374 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3275 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2375 SvREADONLY_on (coro_current); 3276 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3277 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3278 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3279 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3280
3281 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3282 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3283 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3284 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2376 3285
2377 coro_stash = gv_stashpv ("Coro", TRUE); 3286 coro_stash = gv_stashpv ("Coro", TRUE);
2378 3287
2379 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3288 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2380 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3289 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2381 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3290 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2382 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3291 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2383 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3292 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2384 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3293 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2385
2386 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2387 coro_ready[i] = newAV ();
2388 3294
2389 { 3295 {
2390 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3296 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2391 3297
2392 coroapi.schedule = api_schedule; 3298 coroapi.schedule = api_schedule;
3299 coroapi.schedule_to = api_schedule_to;
2393 coroapi.cede = api_cede; 3300 coroapi.cede = api_cede;
2394 coroapi.cede_notself = api_cede_notself; 3301 coroapi.cede_notself = api_cede_notself;
2395 coroapi.ready = api_ready; 3302 coroapi.ready = api_ready;
2396 coroapi.is_ready = api_is_ready; 3303 coroapi.is_ready = api_is_ready;
2397 coroapi.nready = coro_nready; 3304 coroapi.nready = coro_nready;
2398 coroapi.current = coro_current; 3305 coroapi.current = coro_current;
2399 3306
2400 GCoroAPI = &coroapi; 3307 /*GCoroAPI = &coroapi;*/
2401 sv_setiv (sv, (IV)&coroapi); 3308 sv_setiv (sv, (IV)&coroapi);
2402 SvREADONLY_on (sv); 3309 SvREADONLY_on (sv);
2403 } 3310 }
2404} 3311}
2405 3312
2406void 3313void
3314terminate (...)
3315 CODE:
3316 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3317
3318void
2407schedule (...) 3319schedule (...)
2408 CODE: 3320 CODE:
2409 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3321 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3322
3323void
3324schedule_to (...)
3325 CODE:
3326 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3327
3328void
3329cede_to (...)
3330 CODE:
3331 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2410 3332
2411void 3333void
2412cede (...) 3334cede (...)
2413 CODE: 3335 CODE:
2414 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3336 CORO_EXECUTE_SLF_XS (slf_init_cede);
2415 3337
2416void 3338void
2417cede_notself (...) 3339cede_notself (...)
2418 CODE: 3340 CODE:
2419 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3341 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2420 3342
2421void 3343void
2422_set_current (SV *current) 3344_set_current (SV *current)
2423 PROTOTYPE: $ 3345 PROTOTYPE: $
2424 CODE: 3346 CODE:
… …
2427 3349
2428void 3350void
2429_set_readyhook (SV *hook) 3351_set_readyhook (SV *hook)
2430 PROTOTYPE: $ 3352 PROTOTYPE: $
2431 CODE: 3353 CODE:
2432 LOCK;
2433 SvREFCNT_dec (coro_readyhook); 3354 SvREFCNT_dec (coro_readyhook);
3355 SvGETMAGIC (hook);
2434 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3356 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2435 UNLOCK;
2436 3357
2437int 3358int
2438prio (Coro::State coro, int newprio = 0) 3359prio (Coro::State coro, int newprio = 0)
2439 PROTOTYPE: $;$ 3360 PROTOTYPE: $;$
2440 ALIAS: 3361 ALIAS:
… …
2471 CODE: 3392 CODE:
2472 RETVAL = coro_nready; 3393 RETVAL = coro_nready;
2473 OUTPUT: 3394 OUTPUT:
2474 RETVAL 3395 RETVAL
2475 3396
2476# for async_pool speedup
2477void 3397void
2478_pool_1 (SV *cb) 3398suspend (Coro::State self)
3399 PROTOTYPE: $
2479 CODE: 3400 CODE:
2480{ 3401 self->flags |= CF_SUSPENDED;
2481 struct coro *coro = SvSTATE (coro_current);
2482 HV *hv = (HV *)SvRV (coro_current);
2483 AV *defav = GvAV (PL_defgv);
2484 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2485 AV *invoke_av;
2486 int i, len;
2487
2488 if (!invoke)
2489 {
2490 SV *old = PL_diehook;
2491 PL_diehook = 0;
2492 SvREFCNT_dec (old);
2493 croak ("\3async_pool terminate\2\n");
2494 }
2495
2496 SvREFCNT_dec (coro->saved_deffh);
2497 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2498
2499 hv_store (hv, "desc", sizeof ("desc") - 1,
2500 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2501
2502 invoke_av = (AV *)SvRV (invoke);
2503 len = av_len (invoke_av);
2504
2505 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2506
2507 if (len > 0)
2508 {
2509 av_fill (defav, len - 1);
2510 for (i = 0; i < len; ++i)
2511 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2512 }
2513}
2514 3402
2515void 3403void
2516_pool_2 (SV *cb) 3404resume (Coro::State self)
3405 PROTOTYPE: $
2517 CODE: 3406 CODE:
2518{ 3407 self->flags &= ~CF_SUSPENDED;
2519 struct coro *coro = SvSTATE (coro_current);
2520
2521 sv_setsv (cb, &PL_sv_undef);
2522
2523 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2524 coro->saved_deffh = 0;
2525
2526 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2527 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2528 {
2529 SV *old = PL_diehook;
2530 PL_diehook = 0;
2531 SvREFCNT_dec (old);
2532 croak ("\3async_pool terminate\2\n");
2533 }
2534
2535 av_clear (GvAV (PL_defgv));
2536 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2537 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2538
2539 coro->prio = 0;
2540
2541 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2542 api_trace (aTHX_ coro_current, 0);
2543
2544 av_push (av_async_pool, newSVsv (coro_current));
2545}
2546
2547
2548MODULE = Coro::State PACKAGE = Coro::AIO
2549 3408
2550void 3409void
2551_get_state (SV *self) 3410_pool_handler (...)
3411 CODE:
3412 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3413
3414void
3415async_pool (SV *cv, ...)
2552 PROTOTYPE: $ 3416 PROTOTYPE: &@
2553 PPCODE: 3417 PPCODE:
2554{ 3418{
2555 AV *defav = GvAV (PL_defgv); 3419 HV *hv = (HV *)av_pop (av_async_pool);
2556 AV *av = newAV (); 3420 AV *av = newAV ();
3421 SV *cb = ST (0);
2557 int i; 3422 int i;
2558 SV *data_sv = newSV (sizeof (struct io_state));
2559 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2560 SvCUR_set (data_sv, sizeof (struct io_state));
2561 SvPOK_only (data_sv);
2562 3423
2563 data->errorno = errno; 3424 av_extend (av, items - 2);
2564 data->laststype = PL_laststype; 3425 for (i = 1; i < items; ++i)
2565 data->laststatval = PL_laststatval;
2566 data->statcache = PL_statcache;
2567
2568 av_extend (av, AvFILLp (defav) + 1 + 1);
2569
2570 for (i = 0; i <= AvFILLp (defav); ++i)
2571 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3426 av_push (av, SvREFCNT_inc_NN (ST (i)));
2572 3427
2573 av_push (av, data_sv); 3428 if ((SV *)hv == &PL_sv_undef)
2574
2575 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2576
2577 api_ready (aTHX_ self);
2578}
2579
2580void
2581_set_state (SV *state)
2582 PROTOTYPE: $
2583 PPCODE:
2584{
2585 AV *av = (AV *)SvRV (state);
2586 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2587 int i;
2588
2589 errno = data->errorno;
2590 PL_laststype = data->laststype;
2591 PL_laststatval = data->laststatval;
2592 PL_statcache = data->statcache;
2593
2594 EXTEND (SP, AvFILLp (av));
2595 for (i = 0; i < AvFILLp (av); ++i)
2596 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2597}
2598
2599
2600MODULE = Coro::State PACKAGE = Coro::AnyEvent
2601
2602BOOT:
2603 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2604
2605void
2606_schedule (...)
2607 CODE:
2608{
2609 static int incede;
2610
2611 api_cede_notself (aTHX);
2612
2613 ++incede;
2614 while (coro_nready >= incede && api_cede (aTHX))
2615 ;
2616
2617 sv_setsv (sv_activity, &PL_sv_undef);
2618 if (coro_nready >= incede)
2619 { 3429 {
2620 PUSHMARK (SP); 3430 PUSHMARK (SP);
3431 EXTEND (SP, 2);
3432 PUSHs (sv_Coro);
3433 PUSHs ((SV *)cv_pool_handler);
2621 PUTBACK; 3434 PUTBACK;
2622 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3435 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2623 SPAGAIN; 3436 SPAGAIN;
3437
3438 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2624 } 3439 }
2625 3440
2626 --incede; 3441 {
3442 struct coro *coro = SvSTATE_hv (hv);
3443
3444 assert (!coro->invoke_cb);
3445 assert (!coro->invoke_av);
3446 coro->invoke_cb = SvREFCNT_inc (cb);
3447 coro->invoke_av = av;
3448 }
3449
3450 api_ready (aTHX_ (SV *)hv);
3451
3452 if (GIMME_V != G_VOID)
3453 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3454 else
3455 SvREFCNT_dec (hv);
3456}
3457
3458SV *
3459rouse_cb ()
3460 PROTOTYPE:
3461 CODE:
3462 RETVAL = coro_new_rouse_cb (aTHX);
3463 OUTPUT:
3464 RETVAL
3465
3466void
3467rouse_wait (...)
3468 PROTOTYPE: ;$
3469 PPCODE:
3470 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3471
3472void
3473on_enter (SV *block)
3474 ALIAS:
3475 on_leave = 1
3476 PROTOTYPE: &
3477 CODE:
3478{
3479 struct coro *coro = SvSTATE_current;
3480 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3481
3482 block = (SV *)coro_sv_2cv (aTHX_ block);
3483
3484 if (!*avp)
3485 *avp = newAV ();
3486
3487 av_push (*avp, SvREFCNT_inc (block));
3488
3489 if (!ix)
3490 on_enterleave_call (aTHX_ block);
3491
3492 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3493 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3494 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2627} 3495}
2628 3496
2629 3497
2630MODULE = Coro::State PACKAGE = PerlIO::cede 3498MODULE = Coro::State PACKAGE = PerlIO::cede
2631 3499
2632BOOT: 3500BOOT:
2633 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3501 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2634 3502
3503
2635MODULE = Coro::State PACKAGE = Coro::Semaphore 3504MODULE = Coro::State PACKAGE = Coro::Semaphore
2636 3505
2637SV * 3506SV *
2638new (SV *klass, SV *count_ = 0) 3507new (SV *klass, SV *count = 0)
2639 CODE: 3508 CODE:
2640{ 3509{
2641 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3510 int semcnt = 1;
2642 AV *av = newAV (); 3511
2643 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3512 if (count)
2644 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3513 {
3514 SvGETMAGIC (count);
3515
3516 if (SvOK (count))
3517 semcnt = SvIV (count);
3518 }
3519
3520 RETVAL = sv_bless (
3521 coro_waitarray_new (aTHX_ semcnt),
3522 GvSTASH (CvGV (cv))
3523 );
2645} 3524}
3525 OUTPUT:
3526 RETVAL
3527
3528# helper for Coro::Channel and others
3529SV *
3530_alloc (int count)
3531 CODE:
3532 RETVAL = coro_waitarray_new (aTHX_ count);
2646 OUTPUT: 3533 OUTPUT:
2647 RETVAL 3534 RETVAL
2648 3535
2649SV * 3536SV *
2650count (SV *self) 3537count (SV *self)
… …
2656void 3543void
2657up (SV *self, int adjust = 1) 3544up (SV *self, int adjust = 1)
2658 ALIAS: 3545 ALIAS:
2659 adjust = 1 3546 adjust = 1
2660 CODE: 3547 CODE:
2661{ 3548 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2662 AV *av = (AV *)SvRV (self);
2663 SV *count_sv = AvARRAY (av)[0];
2664 IV count = SvIVX (count_sv);
2665
2666 count += ix ? adjust : 1;
2667 SvIVX (count_sv) = count;
2668
2669 /* now wake up as many waiters as possible */
2670 while (count > 0 && AvFILLp (av) >= count)
2671 {
2672 SV *cb;
2673
2674 /* swap first two elements so we can shift a waiter */
2675 AvARRAY (av)[0] = AvARRAY (av)[1];
2676 AvARRAY (av)[1] = count_sv;
2677 cb = av_shift (av);
2678
2679 if (SvOBJECT (cb))
2680 api_ready (aTHX_ cb);
2681 else
2682 croak ("callbacks not yet supported");
2683
2684 SvREFCNT_dec (cb);
2685 }
2686}
2687 3549
2688void 3550void
2689down (SV *self) 3551down (...)
2690 CODE: 3552 CODE:
2691 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3553 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3554
3555void
3556wait (...)
3557 CODE:
3558 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2692 3559
2693void 3560void
2694try (SV *self) 3561try (SV *self)
2695 PPCODE: 3562 PPCODE:
2696{ 3563{
… …
2708 XSRETURN_NO; 3575 XSRETURN_NO;
2709} 3576}
2710 3577
2711void 3578void
2712waiters (SV *self) 3579waiters (SV *self)
2713 CODE: 3580 PPCODE:
2714{ 3581{
2715 AV *av = (AV *)SvRV (self); 3582 AV *av = (AV *)SvRV (self);
3583 int wcount = AvFILLp (av) + 1 - 1;
2716 3584
2717 if (GIMME_V == G_SCALAR) 3585 if (GIMME_V == G_SCALAR)
2718 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3586 XPUSHs (sv_2mortal (newSViv (wcount)));
2719 else 3587 else
2720 { 3588 {
2721 int i; 3589 int i;
2722 EXTEND (SP, AvFILLp (av) + 1 - 1); 3590 EXTEND (SP, wcount);
2723 for (i = 1; i <= AvFILLp (av); ++i) 3591 for (i = 1; i <= wcount; ++i)
2724 PUSHs (newSVsv (AvARRAY (av)[i])); 3592 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2725 } 3593 }
2726} 3594}
2727 3595
3596MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3597
3598void
3599_may_delete (SV *sem, int count, int extra_refs)
3600 PPCODE:
3601{
3602 AV *av = (AV *)SvRV (sem);
3603
3604 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3605 && AvFILLp (av) == 0 /* no waiters, just count */
3606 && SvIV (AvARRAY (av)[0]) == count)
3607 XSRETURN_YES;
3608
3609 XSRETURN_NO;
3610}
3611
3612MODULE = Coro::State PACKAGE = Coro::Signal
3613
3614SV *
3615new (SV *klass)
3616 CODE:
3617 RETVAL = sv_bless (
3618 coro_waitarray_new (aTHX_ 0),
3619 GvSTASH (CvGV (cv))
3620 );
3621 OUTPUT:
3622 RETVAL
3623
3624void
3625wait (...)
3626 CODE:
3627 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3628
3629void
3630broadcast (SV *self)
3631 CODE:
3632{
3633 AV *av = (AV *)SvRV (self);
3634 coro_signal_wake (aTHX_ av, AvFILLp (av));
3635}
3636
3637void
3638send (SV *self)
3639 CODE:
3640{
3641 AV *av = (AV *)SvRV (self);
3642
3643 if (AvFILLp (av))
3644 coro_signal_wake (aTHX_ av, 1);
3645 else
3646 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3647}
3648
3649IV
3650awaited (SV *self)
3651 CODE:
3652 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3653 OUTPUT:
3654 RETVAL
3655
3656
3657MODULE = Coro::State PACKAGE = Coro::AnyEvent
3658
3659BOOT:
3660 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3661
3662void
3663_schedule (...)
3664 CODE:
3665{
3666 static int incede;
3667
3668 api_cede_notself (aTHX);
3669
3670 ++incede;
3671 while (coro_nready >= incede && api_cede (aTHX))
3672 ;
3673
3674 sv_setsv (sv_activity, &PL_sv_undef);
3675 if (coro_nready >= incede)
3676 {
3677 PUSHMARK (SP);
3678 PUTBACK;
3679 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3680 }
3681
3682 --incede;
3683}
3684
3685
3686MODULE = Coro::State PACKAGE = Coro::AIO
3687
3688void
3689_register (char *target, char *proto, SV *req)
3690 CODE:
3691{
3692 CV *req_cv = coro_sv_2cv (aTHX_ req);
3693 /* newXSproto doesn't return the CV on 5.8 */
3694 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3695 sv_setpv ((SV *)slf_cv, proto);
3696 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3697}
3698

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