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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 1.360 by root, Mon Jun 29 06:14:23 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? */
175static void (*u2time)(pTHX_ UV ret[2]);
176
177/* we hijack an hopefully unused CV flag for our purposes */
178#define CVf_SLF 0x4000
179static OP *pp_slf (pTHX);
178 180
179static U32 cctx_gen; 181static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 182static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 183static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 184static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 185static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 186static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 187static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 188
189static AV *av_destroy; /* destruction queue */
190static SV *sv_manager; /* the manager coro */
191static SV *sv_idle; /* $Coro::idle */
187 192
188static GV *irsgv; /* $/ */ 193static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 194static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 195static SV *rv_diehook;
191static SV *rv_warnhook; 196static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 197static HV *hv_sig; /* %SIG */
193 198
194/* async_pool helper stuff */ 199/* async_pool helper stuff */
195static SV *sv_pool_rss; 200static SV *sv_pool_rss;
196static SV *sv_pool_size; 201static SV *sv_pool_size;
202static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 203static AV *av_async_pool; /* idle pool */
204static SV *sv_Coro; /* class string */
205static CV *cv_pool_handler;
206static CV *cv_coro_state_new;
198 207
199/* Coro::AnyEvent */ 208/* Coro::AnyEvent */
200static SV *sv_activity; 209static SV *sv_activity;
210
211/* enable processtime/realtime profiling */
212static char enable_times;
213typedef U32 coro_ts[2];
214static coro_ts time_real, time_cpu;
215static char times_valid;
201 216
202static struct coro_cctx *cctx_first; 217static struct coro_cctx *cctx_first;
203static int cctx_count, cctx_idle; 218static int cctx_count, cctx_idle;
204 219
205enum { 220enum {
… …
231 int valgrind_id; 246 int valgrind_id;
232#endif 247#endif
233 unsigned char flags; 248 unsigned char flags;
234} coro_cctx; 249} coro_cctx;
235 250
251coro_cctx *cctx_current; /* the currently running cctx */
252
253/*****************************************************************************/
254
236enum { 255enum {
237 CF_RUNNING = 0x0001, /* coroutine is running */ 256 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 257 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 258 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 259 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
260 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
241}; 261};
242 262
243/* the structure where most of the perl state is stored, overlaid on the cxstack */ 263/* the structure where most of the perl state is stored, overlaid on the cxstack */
244typedef struct 264typedef struct
245{ 265{
246 SV *defsv; 266 SV *defsv;
247 AV *defav; 267 AV *defav;
248 SV *errsv; 268 SV *errsv;
249 SV *irsgv; 269 SV *irsgv;
270 HV *hinthv;
250#define VAR(name,type) type name; 271#define VAR(name,type) type name;
251# include "state.h" 272# include "state.h"
252#undef VAR 273#undef VAR
253} perl_slots; 274} perl_slots;
254 275
… …
257/* this is a structure representing a perl-level coroutine */ 278/* this is a structure representing a perl-level coroutine */
258struct coro { 279struct coro {
259 /* the C coroutine allocated to this perl coroutine, if any */ 280 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 281 coro_cctx *cctx;
261 282
262 /* process data */ 283 /* ready queue */
284 struct coro *next_ready;
285
286 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 287 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 288 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 289 perl_slots *slot; /* basically the saved sp */
266 290
291 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 292 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */ 293 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 294 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 295 HV *hv; /* the perl hash associated with this coro, if any */
296 void (*on_destroy)(pTHX_ struct coro *coro);
271 297
272 /* statistics */ 298 /* statistics */
273 int usecount; /* number of transfers to this coro */ 299 int usecount; /* number of transfers to this coro */
274 300
275 /* coro process data */ 301 /* coro process data */
276 int prio; 302 int prio;
277 SV *throw; /* exception to be thrown */ 303 SV *except; /* exception to be thrown */
304 SV *rouse_cb;
278 305
279 /* async_pool */ 306 /* async_pool */
280 SV *saved_deffh; 307 SV *saved_deffh;
308 SV *invoke_cb;
309 AV *invoke_av;
310
311 /* on_enter/on_leave */
312 AV *on_enter;
313 AV *on_leave;
314
315 /* times */
316 coro_ts t_cpu, t_real;
281 317
282 /* linked list */ 318 /* linked list */
283 struct coro *next, *prev; 319 struct coro *next, *prev;
284}; 320};
285 321
286typedef struct coro *Coro__State; 322typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 323typedef struct coro *Coro__State_or_hashref;
288 324
325/* the following variables are effectively part of the perl context */
326/* and get copied between struct coro and these variables */
327/* the mainr easonw e don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 328static struct CoroSLF slf_frame; /* the current slf frame */
290 329
291/** Coro ********************************************************************/ 330/** Coro ********************************************************************/
292 331
293#define PRIO_MAX 3 332#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 333#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 334#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 335#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 336#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 337#define CORO_PRIO_MIN -4
299 338
300/* for Coro.pm */ 339/* for Coro.pm */
301static SV *coro_current; 340static SV *coro_current;
302static SV *coro_readyhook; 341static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 342static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
343static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 344static struct coro *coro_first;
305#define coro_nready coroapi.nready 345#define coro_nready coroapi.nready
306 346
307/** lowlevel stuff **********************************************************/ 347/** lowlevel stuff **********************************************************/
308 348
… …
334 get_hv (name, create); 374 get_hv (name, create);
335#endif 375#endif
336 return get_hv (name, create); 376 return get_hv (name, create);
337} 377}
338 378
379/* may croak */
380INLINE CV *
381coro_sv_2cv (pTHX_ SV *sv)
382{
383 HV *st;
384 GV *gvp;
385 CV *cv = sv_2cv (sv, &st, &gvp, 0);
386
387 if (!cv)
388 croak ("code reference expected");
389
390 return cv;
391}
392
393INLINE void
394coro_times_update ()
395{
396#ifdef coro_clock_gettime
397 struct timespec ts;
398
399 ts.tv_sec = ts.tv_nsec = 0;
400 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
401 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
402
403 ts.tv_sec = ts.tv_nsec = 0;
404 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
405 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
406#else
407 UV tv[2];
408
409 u2time (aTHX_ &tv);
410 time_real [0] = tv [0];
411 time_real [1] = tv [1] * 1000;
412#endif
413}
414
415INLINE void
416coro_times_add (struct coro *c)
417{
418 c->t_real [1] += time_real [1];
419 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
420 c->t_real [0] += time_real [0];
421
422 c->t_cpu [1] += time_cpu [1];
423 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
424 c->t_cpu [0] += time_cpu [0];
425}
426
427INLINE void
428coro_times_sub (struct coro *c)
429{
430 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
431 c->t_real [1] -= time_real [1];
432 c->t_real [0] -= time_real [0];
433
434 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
435 c->t_cpu [1] -= time_cpu [1];
436 c->t_cpu [0] -= time_cpu [0];
437}
438
439/*****************************************************************************/
440/* magic glue */
441
442#define CORO_MAGIC_type_cv 26
443#define CORO_MAGIC_type_state PERL_MAGIC_ext
444
445#define CORO_MAGIC_NN(sv, type) \
446 (expect_true (SvMAGIC (sv)->mg_type == type) \
447 ? SvMAGIC (sv) \
448 : mg_find (sv, type))
449
450#define CORO_MAGIC(sv, type) \
451 (expect_true (SvMAGIC (sv)) \
452 ? CORO_MAGIC_NN (sv, type) \
453 : 0)
454
455#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
456#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
457
458INLINE struct coro *
459SvSTATE_ (pTHX_ SV *coro)
460{
461 HV *stash;
462 MAGIC *mg;
463
464 if (SvROK (coro))
465 coro = SvRV (coro);
466
467 if (expect_false (SvTYPE (coro) != SVt_PVHV))
468 croak ("Coro::State object required");
469
470 stash = SvSTASH (coro);
471 if (expect_false (stash != coro_stash && stash != coro_state_stash))
472 {
473 /* very slow, but rare, check */
474 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
475 croak ("Coro::State object required");
476 }
477
478 mg = CORO_MAGIC_state (coro);
479 return (struct coro *)mg->mg_ptr;
480}
481
482#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
483
484/* faster than SvSTATE, but expects a coroutine hv */
485#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
486#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
487
488/*****************************************************************************/
489/* padlist management and caching */
490
339static AV * 491static AV *
340coro_clone_padlist (pTHX_ CV *cv) 492coro_derive_padlist (pTHX_ CV *cv)
341{ 493{
342 AV *padlist = CvPADLIST (cv); 494 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 495 AV *newpadlist, *newpad;
344 496
345 newpadlist = newAV (); 497 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 502 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 503#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 504 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 505 --AvFILLp (padlist);
354 506
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 507 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 508 av_store (newpadlist, 1, (SV *)newpad);
357 509
358 return newpadlist; 510 return newpadlist;
359} 511}
360 512
361static void 513static void
362free_padlist (pTHX_ AV *padlist) 514free_padlist (pTHX_ AV *padlist)
363{ 515{
364 /* may be during global destruction */ 516 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 517 if (!IN_DESTRUCT)
366 { 518 {
367 I32 i = AvFILLp (padlist); 519 I32 i = AvFILLp (padlist);
368 while (i >= 0) 520
521 while (i > 0) /* special-case index 0 */
369 { 522 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 523 /* we try to be extra-careful here */
371 if (svp) 524 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 525 I32 j = AvFILLp (av);
373 SV *sv; 526
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 527 while (j >= 0)
528 SvREFCNT_dec (AvARRAY (av)[j--]);
529
530 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 531 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 532 }
380 533
534 SvREFCNT_dec (AvARRAY (padlist)[0]);
535
536 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 537 SvREFCNT_dec ((SV*)padlist);
382 } 538 }
383} 539}
384 540
385static int 541static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 542coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 543{
388 AV *padlist; 544 AV *padlist;
389 AV *av = (AV *)mg->mg_obj; 545 AV *av = (AV *)mg->mg_obj;
546
547 /* perl manages to free our internal AV and _then_ call us */
548 if (IN_DESTRUCT)
549 return;
390 550
391 /* casting is fun. */ 551 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 552 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 553 free_padlist (aTHX_ padlist);
394 554
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 555 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 556
397 return 0; 557 return 0;
398} 558}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 559
403static MGVTBL coro_cv_vtbl = { 560static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 561 0, 0, 0, 0,
405 coro_cv_free 562 coro_cv_free
406}; 563};
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))
443 564
444/* the next two functions merely cache the padlists */ 565/* the next two functions merely cache the padlists */
445static void 566static void
446get_padlist (pTHX_ CV *cv) 567get_padlist (pTHX_ CV *cv)
447{ 568{
… …
453 else 574 else
454 { 575 {
455#if CORO_PREFER_PERL_FUNCTIONS 576#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 577 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 578 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 579 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 580 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 581 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 582 SvREFCNT_dec (cp);
462#else 583#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 584 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 585#endif
465 } 586 }
466} 587}
467 588
468static void 589static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 596 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 597
477 av = (AV *)mg->mg_obj; 598 av = (AV *)mg->mg_obj;
478 599
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 600 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 601 av_extend (av, AvFILLp (av) + 1);
481 602
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 603 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 604}
484 605
485/** load & save, init *******************************************************/ 606/** load & save, init *******************************************************/
607
608static void
609on_enterleave_call (pTHX_ SV *cb);
486 610
487static void 611static void
488load_perl (pTHX_ Coro__State c) 612load_perl (pTHX_ Coro__State c)
489{ 613{
490 perl_slots *slot = c->slot; 614 perl_slots *slot = c->slot;
491 c->slot = 0; 615 c->slot = 0;
492 616
493 PL_mainstack = c->mainstack; 617 PL_mainstack = c->mainstack;
494 618
495 GvSV (PL_defgv) = slot->defsv; 619 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 620 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 621 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 622 GvSV (irsgv) = slot->irsgv;
623 GvHV (PL_hintgv) = slot->hinthv;
499 624
500 #define VAR(name,type) PL_ ## name = slot->name; 625 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 626 # include "state.h"
502 #undef VAR 627 #undef VAR
503 628
… …
515 } 640 }
516 641
517 PUTBACK; 642 PUTBACK;
518 } 643 }
519 644
520 slf_frame = c->slf_frame; 645 slf_frame = c->slf_frame;
646 CORO_THROW = c->except;
647
648 if (expect_false (enable_times))
649 {
650 if (expect_false (!times_valid))
651 coro_times_update ();
652
653 coro_times_sub (c);
654 }
655
656 if (expect_false (c->on_enter))
657 {
658 int i;
659
660 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
661 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
662 }
521} 663}
522 664
523static void 665static void
524save_perl (pTHX_ Coro__State c) 666save_perl (pTHX_ Coro__State c)
525{ 667{
668 if (expect_false (c->on_leave))
669 {
670 int i;
671
672 for (i = AvFILLp (c->on_leave); i >= 0; --i)
673 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
674 }
675
676 times_valid = 0;
677
678 if (expect_false (enable_times))
679 {
680 coro_times_update (); times_valid = 1;
681 coro_times_add (c);
682 }
683
684 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 685 c->slf_frame = slf_frame;
527 686
528 { 687 {
529 dSP; 688 dSP;
530 I32 cxix = cxstack_ix; 689 I32 cxix = cxstack_ix;
… …
542 { 701 {
543 while (expect_true (cxix >= 0)) 702 while (expect_true (cxix >= 0))
544 { 703 {
545 PERL_CONTEXT *cx = &ccstk[cxix--]; 704 PERL_CONTEXT *cx = &ccstk[cxix--];
546 705
547 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 706 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
548 { 707 {
549 CV *cv = cx->blk_sub.cv; 708 CV *cv = cx->blk_sub.cv;
550 709
551 if (expect_true (CvDEPTH (cv))) 710 if (expect_true (CvDEPTH (cv)))
552 { 711 {
… …
587 c->mainstack = PL_mainstack; 746 c->mainstack = PL_mainstack;
588 747
589 { 748 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 749 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 750
592 slot->defav = GvAV (PL_defgv); 751 slot->defav = GvAV (PL_defgv);
593 slot->defsv = DEFSV; 752 slot->defsv = DEFSV;
594 slot->errsv = ERRSV; 753 slot->errsv = ERRSV;
595 slot->irsgv = GvSV (irsgv); 754 slot->irsgv = GvSV (irsgv);
755 slot->hinthv = GvHV (PL_hintgv);
596 756
597 #define VAR(name,type) slot->name = PL_ ## name; 757 #define VAR(name,type) slot->name = PL_ ## name;
598 # include "state.h" 758 # include "state.h"
599 #undef VAR 759 #undef VAR
600 } 760 }
… …
605 * of perl.c:init_stacks, except that it uses less memory 765 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 766 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 767 * not usually need a lot of stackspace.
608 */ 768 */
609#if CORO_PREFER_PERL_FUNCTIONS 769#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 770# define coro_init_stacks(thx) init_stacks ()
611#else 771#else
612static void 772static void
613coro_init_stacks (pTHX) 773coro_init_stacks (pTHX)
614{ 774{
615 PL_curstackinfo = new_stackinfo(32, 8); 775 PL_curstackinfo = new_stackinfo(32, 8);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 838#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 839 Safefree (PL_retstack);
680#endif 840#endif
681} 841}
682 842
843#define CORO_RSS \
844 rss += sizeof (SYM (curstackinfo)); \
845 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
846 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
847 rss += SYM (tmps_max) * sizeof (SV *); \
848 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
849 rss += SYM (scopestack_max) * sizeof (I32); \
850 rss += SYM (savestack_max) * sizeof (ANY);
851
683static size_t 852static size_t
684coro_rss (pTHX_ struct coro *coro) 853coro_rss (pTHX_ struct coro *coro)
685{ 854{
686 size_t rss = sizeof (*coro); 855 size_t rss = sizeof (*coro);
687 856
688 if (coro->mainstack) 857 if (coro->mainstack)
689 { 858 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 859 if (coro->flags & CF_RUNNING)
694 { 860 {
695 slot = &tmp_slot; 861 #define SYM(sym) PL_ ## sym
696 862 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 863 #undef SYM
700 } 864 }
701 else 865 else
702 slot = coro->slot;
703
704 if (slot)
705 { 866 {
706 rss += sizeof (slot->curstackinfo); 867 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 868 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 869 #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 } 870 }
718 } 871 }
719 872
720 return rss; 873 return rss;
721} 874}
… …
734#endif 887#endif
735 888
736/* 889/*
737 * This overrides the default magic get method of %SIG elements. 890 * 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 891 * 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 892 * and instead of trying to save and restore the hash elements, we just provide
740 * readback here. 893 * 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 */ 894 */
745static int 895static int
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 896coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{ 897{
748 const char *s = MgPV_nolen_const (mg); 898 const char *s = MgPV_nolen_const (mg);
… …
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 951 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802 952
803 if (svp) 953 if (svp)
804 { 954 {
805 SV *old = *svp; 955 SV *old = *svp;
806 *svp = newSVsv (sv); 956 *svp = SvOK (sv) ? newSVsv (sv) : 0;
807 SvREFCNT_dec (old); 957 SvREFCNT_dec (old);
808 return 0; 958 return 0;
809 } 959 }
810 } 960 }
811 961
… …
823slf_check_nop (pTHX_ struct CoroSLF *frame) 973slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 974{
825 return 0; 975 return 0;
826} 976}
827 977
828static void 978static int
979slf_check_repeat (pTHX_ struct CoroSLF *frame)
980{
981 return 1;
982}
983
984static UNOP coro_setup_op;
985
986static void NOINLINE /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 987coro_setup (pTHX_ struct coro *coro)
830{ 988{
831 /* 989 /*
832 * emulate part of the perl startup here. 990 * emulate part of the perl startup here.
833 */ 991 */
… …
835 993
836 PL_runops = RUNOPS_DEFAULT; 994 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 995 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 996 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 997 PL_comppad = 0;
998 PL_comppad_name = 0;
999 PL_comppad_name_fill = 0;
1000 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 1001 PL_curpm = 0;
841 PL_curpad = 0; 1002 PL_curpad = 0;
842 PL_localizing = 0; 1003 PL_localizing = 0;
843 PL_dirty = 0; 1004 PL_dirty = 0;
844 PL_restartop = 0; 1005 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 1006#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 1007 PL_parser = 0;
847#endif 1008#endif
1009 PL_hints = 0;
848 1010
849 /* recreate the die/warn hooks */ 1011 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1012 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); 1013 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
852 1014
853 GvSV (PL_defgv) = newSV (0); 1015 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 1016 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 1017 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1018 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1019 GvHV (PL_hintgv) = 0;
857 PL_rs = newSVsv (GvSV (irsgv)); 1020 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1021 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 1022
860 { 1023 {
861 dSP; 1024 dSP;
862 UNOP myop; 1025 UNOP myop;
863 1026
864 Zero (&myop, 1, UNOP); 1027 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 1028 myop.op_next = Nullop;
1029 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 1030 myop.op_flags = OPf_WANT_VOID;
867 1031
868 PUSHMARK (SP); 1032 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1033 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 1034 PUTBACK;
871 PL_op = (OP *)&myop; 1035 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1036 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 1037 }
875 1038
876 /* this newly created coroutine might be run on an existing cctx which most 1039 /* 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. 1040 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 1041 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1042 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 */ 1043 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881}
882 1044
1045 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1046 coro_setup_op.op_next = PL_op;
1047 coro_setup_op.op_type = OP_ENTERSUB;
1048 coro_setup_op.op_ppaddr = pp_slf;
1049 /* no flags etc. required, as an init function won't be called */
1050
1051 PL_op = (OP *)&coro_setup_op;
1052
1053 /* copy throw, in case it was set before coro_setup */
1054 CORO_THROW = coro->except;
1055
1056 if (expect_false (enable_times))
1057 {
1058 coro_times_update ();
1059 coro_times_sub (coro);
1060 }
1061}
1062
883static void 1063static void
884coro_destruct (pTHX_ struct coro *coro) 1064coro_unwind_stacks (pTHX)
885{ 1065{
886 if (!IN_DESTRUCT) 1066 if (!IN_DESTRUCT)
887 { 1067 {
888 /* restore all saved variables and stuff */ 1068 /* restore all saved variables and stuff */
889 LEAVE_SCOPE (0); 1069 LEAVE_SCOPE (0);
… …
897 POPSTACK_TO (PL_mainstack); 1077 POPSTACK_TO (PL_mainstack);
898 1078
899 /* unwind main stack */ 1079 /* unwind main stack */
900 dounwind (-1); 1080 dounwind (-1);
901 } 1081 }
1082}
902 1083
903 SvREFCNT_dec (GvSV (PL_defgv)); 1084static void
904 SvREFCNT_dec (GvAV (PL_defgv)); 1085coro_destruct_perl (pTHX_ struct coro *coro)
905 SvREFCNT_dec (GvSV (PL_errgv)); 1086{
906 SvREFCNT_dec (PL_defoutgv); 1087 SV *svf [9];
907 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv));
909 1088
910 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook);
912 1089 {
1090 struct coro *current = SvSTATE_current;
1091
1092 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1093
1094 save_perl (aTHX_ current);
1095 load_perl (aTHX_ coro);
1096
1097 coro_unwind_stacks (aTHX);
1098 coro_destruct_stacks (aTHX);
1099
1100 // now save some sv's to be free'd later
1101 svf [0] = GvSV (PL_defgv);
1102 svf [1] = (SV *)GvAV (PL_defgv);
1103 svf [2] = GvSV (PL_errgv);
1104 svf [3] = (SV *)PL_defoutgv;
1105 svf [4] = PL_rs;
1106 svf [5] = GvSV (irsgv);
1107 svf [6] = (SV *)GvHV (PL_hintgv);
1108 svf [7] = PL_diehook;
1109 svf [8] = PL_warnhook;
1110 assert (9 == sizeof (svf) / sizeof (*svf));
1111
1112 load_perl (aTHX_ current);
1113 }
1114
1115 {
1116 int i;
1117
1118 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1119 SvREFCNT_dec (svf [i]);
1120
913 SvREFCNT_dec (coro->saved_deffh); 1121 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 1122 SvREFCNT_dec (coro->rouse_cb);
915 1123 SvREFCNT_dec (coro->invoke_cb);
916 coro_destruct_stacks (aTHX); 1124 SvREFCNT_dec (coro->invoke_av);
1125 }
917} 1126}
918 1127
919INLINE void 1128INLINE void
920free_coro_mortal (pTHX) 1129free_coro_mortal (pTHX)
921{ 1130{
… …
929static int 1138static int
930runops_trace (pTHX) 1139runops_trace (pTHX)
931{ 1140{
932 COP *oldcop = 0; 1141 COP *oldcop = 0;
933 int oldcxix = -2; 1142 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 1143
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1144 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 1145 {
939 PERL_ASYNC_CHECK (); 1146 PERL_ASYNC_CHECK ();
940 1147
941 if (cctx->flags & CC_TRACE_ALL) 1148 if (cctx_current->flags & CC_TRACE_ALL)
942 { 1149 {
943 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1150 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
944 { 1151 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1152 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 1153 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 1154 AV *av = newAV (); /* return values */
948 SV **cb; 1155 SV **cb;
… …
985 1192
986 if (PL_curcop != &PL_compiling) 1193 if (PL_curcop != &PL_compiling)
987 { 1194 {
988 SV **cb; 1195 SV **cb;
989 1196
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1197 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
991 { 1198 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1199 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1200
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1201 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1202 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1203 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1204 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1205 SV *fullname = sv_2mortal (newSV (0));
1000 1206
1001 if (isGV (gv)) 1207 if (isGV (gv))
… …
1006 SAVETMPS; 1212 SAVETMPS;
1007 EXTEND (SP, 3); 1213 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1214 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1215 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1216 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1217 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK; 1218 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1219 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); 1220 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN; 1221 SPAGAIN;
1016 FREETMPS; 1222 FREETMPS;
… …
1019 } 1225 }
1020 1226
1021 oldcxix = cxstack_ix; 1227 oldcxix = cxstack_ix;
1022 } 1228 }
1023 1229
1024 if (cctx->flags & CC_TRACE_LINE) 1230 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1231 {
1026 dSP; 1232 dSP;
1027 1233
1028 PL_runops = RUNOPS_DEFAULT; 1234 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1235 ENTER;
… …
1048 1254
1049 TAINT_NOT; 1255 TAINT_NOT;
1050 return 0; 1256 return 0;
1051} 1257}
1052 1258
1259static struct CoroSLF cctx_ssl_frame;
1260
1053static void 1261static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1262slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1263{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1264 ta->prev = 0;
1058} 1265}
1059 1266
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1267static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1268slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */ 1269{
1063/* also initialises PL_top_env */ 1270 *frame = cctx_ssl_frame;
1271
1272 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1273}
1274
1275/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1064static void NOINLINE 1276static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx) 1277cctx_prepare (pTHX)
1066{ 1278{
1067 dSP;
1068 UNOP myop;
1069
1070 PL_top_env = &PL_start_env; 1279 PL_top_env = &PL_start_env;
1071 1280
1072 if (cctx->flags & CC_TRACE) 1281 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1282 PL_runops = runops_trace;
1074 1283
1075 Zero (&myop, 1, UNOP); 1284 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1285 * that can lead to creation of a new cctx */
1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1286 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1287 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1078 1288
1079 PUSHMARK (SP); 1289 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1290 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1291
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1292 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1293 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1294}
1088 1295
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1296/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1297INLINE void
1091transfer_tail (pTHX) 1298transfer_tail (pTHX)
1092{ 1299{
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); 1300 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} 1301}
1109 1302
1110/* 1303/*
1111 * this is a _very_ stripped down perl interpreter ;) 1304 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1305 */
… …
1124 /* normally we would need to skip the entersub here */ 1317 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1318 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1319 /* PL_nop = PL_nop->op_next */
1127 1320
1128 /* inject a fake subroutine call to cctx_init */ 1321 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1322 cctx_prepare (aTHX);
1130 1323
1131 /* cctx_run is the alternative tail of transfer() */ 1324 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1325 transfer_tail (aTHX);
1134 1326
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1327 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1328 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1329 perl_run (PL_curinterp);
1330 /*
1331 * Unfortunately, there is no way to get at the return values of the
1332 * coro body here, as perl_run destroys these
1333 */
1138 1334
1139 /* 1335 /*
1140 * If perl-run returns we assume exit() was being called or the coro 1336 * 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) 1337 * 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 1338 * 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" 1339 * bootstrap-time "top" top_env, as we cannot restore the "main"
1144 * coroutine as Coro has no such concept 1340 * coroutine as Coro has no such concept.
1341 * This actually isn't valid with the pthread backend, but OSes requiring
1342 * that backend are too broken to do it in a standards-compliant way.
1145 */ 1343 */
1146 PL_top_env = main_top_env; 1344 PL_top_env = main_top_env;
1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1345 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 } 1346 }
1149} 1347}
… …
1226cctx_destroy (coro_cctx *cctx) 1424cctx_destroy (coro_cctx *cctx)
1227{ 1425{
1228 if (!cctx) 1426 if (!cctx)
1229 return; 1427 return;
1230 1428
1429 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1430
1231 --cctx_count; 1431 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1432 coro_destroy (&cctx->cctx);
1233 1433
1234 /* coro_transfer creates new, empty cctx's */ 1434 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr) 1435 if (cctx->sptr)
… …
1293/** coroutine switching *****************************************************/ 1493/** coroutine switching *****************************************************/
1294 1494
1295static void 1495static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1496transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1497{
1498 /* TODO: throwing up here is considered harmful */
1499
1298 if (expect_true (prev != next)) 1500 if (expect_true (prev != next))
1299 { 1501 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1502 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,"); 1503 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1302 1504
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)) 1505 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,"); 1506 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1308 1507
1309#if !PERL_VERSION_ATLEAST (5,10,0) 1508#if !PERL_VERSION_ATLEAST (5,10,0)
1310 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1509 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,"); 1510 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1312#endif 1511#endif
1313 } 1512 }
1314} 1513}
1315 1514
1316/* always use the TRANSFER macro */ 1515/* always use the TRANSFER macro */
1317static void NOINLINE 1516static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1517transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1518{
1320 dSTACKLEVEL; 1519 dSTACKLEVEL;
1321 1520
1322 /* sometimes transfer is only called to set idle_sp */ 1521 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1522 if (expect_false (!prev))
1324 { 1523 {
1325 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1524 cctx_current->idle_sp = STACKLEVEL;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1525 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1526 }
1328 else if (expect_true (prev != next)) 1527 else if (expect_true (prev != next))
1329 { 1528 {
1330 coro_cctx *prev__cctx; 1529 coro_cctx *cctx_prev;
1331 1530
1332 if (expect_false (prev->flags & CF_NEW)) 1531 if (expect_false (prev->flags & CF_NEW))
1333 { 1532 {
1334 /* create a new empty/source context */ 1533 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1534 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1535 prev->flags |= CF_RUNNING;
1338 } 1536 }
1339 1537
1340 prev->flags &= ~CF_RUNNING; 1538 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1539 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1540
1345 /* first get rid of the old state */ 1541 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1542 save_perl (aTHX_ prev);
1347 1543
1348 if (expect_false (next->flags & CF_NEW)) 1544 if (expect_false (next->flags & CF_NEW))
… …
1353 coro_setup (aTHX_ next); 1549 coro_setup (aTHX_ next);
1354 } 1550 }
1355 else 1551 else
1356 load_perl (aTHX_ next); 1552 load_perl (aTHX_ next);
1357 1553
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */ 1554 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1555 if (expect_true (
1362 prev__cctx->idle_sp == (void *)stacklevel 1556 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1557 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1558 && !force_cctx
1365 )) 1559 ))
1366 { 1560 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1561 /* 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)); 1562 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1369 1563
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 */ 1564 /* 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 */ 1565 /* without this the next cctx_get might destroy the running cctx while still in use */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1566 if (expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1567 if (expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1568 next->cctx = cctx_get (aTHX);
1377 1569
1378 cctx_put (prev__cctx); 1570 cctx_put (cctx_current);
1379 } 1571 }
1572 else
1573 prev->cctx = cctx_current;
1380 1574
1381 ++next->usecount; 1575 ++next->usecount;
1382 1576
1383 if (expect_true (!next->cctx)) 1577 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1578 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1579
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1580 next->cctx = 0;
1387 transfer_next = next;
1388 1581
1389 if (expect_false (prev__cctx != next->cctx)) 1582 if (expect_false (cctx_prev != cctx_current))
1390 { 1583 {
1391 prev__cctx->top_env = PL_top_env; 1584 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1585 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1586 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1587 }
1395 1588
1396 transfer_tail (aTHX); 1589 transfer_tail (aTHX);
1397 } 1590 }
1398} 1591}
… …
1405static int 1598static int
1406coro_state_destroy (pTHX_ struct coro *coro) 1599coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1600{
1408 if (coro->flags & CF_DESTROYED) 1601 if (coro->flags & CF_DESTROYED)
1409 return 0; 1602 return 0;
1603
1604 if (coro->on_destroy && !PL_dirty)
1605 coro->on_destroy (aTHX_ coro);
1410 1606
1411 coro->flags |= CF_DESTROYED; 1607 coro->flags |= CF_DESTROYED;
1412 1608
1413 if (coro->flags & CF_READY) 1609 if (coro->flags & CF_READY)
1414 { 1610 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1611 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1612 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1613 --coro_nready;
1419 UNLOCK;
1420 } 1614 }
1421 else 1615 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1616 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423 1617
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1618 if (coro->mainstack
1425 { 1619 && coro->mainstack != main_mainstack
1426 struct coro temp; 1620 && coro->slot
1427 1621 && !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); 1622 coro_destruct_perl (aTHX_ coro);
1434
1435 load_perl (aTHX_ &temp);
1436
1437 coro->slot = 0;
1438 }
1439 1623
1440 cctx_destroy (coro->cctx); 1624 cctx_destroy (coro->cctx);
1625 SvREFCNT_dec (coro->startcv);
1441 SvREFCNT_dec (coro->args); 1626 SvREFCNT_dec (coro->args);
1627 SvREFCNT_dec (CORO_THROW);
1442 1628
1443 if (coro->next) coro->next->prev = coro->prev; 1629 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1630 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1631 if (coro == coro_first) coro_first = coro->next;
1446 1632
… …
1500 1686
1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1687 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1502 TRANSFER (ta, 1); 1688 TRANSFER (ta, 1);
1503} 1689}
1504 1690
1691/*****************************************************************************/
1692/* gensub: simple closure generation utility */
1693
1694#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1695
1696/* create a closure from XS, returns a code reference */
1697/* the arg can be accessed via GENSUB_ARG from the callback */
1698/* the callback must use dXSARGS/XSRETURN */
1699static SV *
1700gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1701{
1702 CV *cv = (CV *)newSV (0);
1703
1704 sv_upgrade ((SV *)cv, SVt_PVCV);
1705
1706 CvANON_on (cv);
1707 CvISXSUB_on (cv);
1708 CvXSUB (cv) = xsub;
1709 GENSUB_ARG = arg;
1710
1711 return newRV_noinc ((SV *)cv);
1712}
1713
1505/** Coro ********************************************************************/ 1714/** Coro ********************************************************************/
1506 1715
1507static void 1716INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1717coro_enq (pTHX_ struct coro *coro)
1509{ 1718{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1719 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1511}
1512 1720
1513static SV * 1721 SvREFCNT_inc_NN (coro->hv);
1722
1723 coro->next_ready = 0;
1724 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1725 ready [1] = coro;
1726}
1727
1728INLINE struct coro *
1514coro_deq (pTHX) 1729coro_deq (pTHX)
1515{ 1730{
1516 int prio; 1731 int prio;
1517 1732
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1733 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1519 if (AvFILLp (coro_ready [prio]) >= 0) 1734 {
1520 return av_shift (coro_ready [prio]); 1735 struct coro **ready = coro_ready [prio];
1736
1737 if (ready [0])
1738 {
1739 struct coro *coro = ready [0];
1740 ready [0] = coro->next_ready;
1741 return coro;
1742 }
1743 }
1521 1744
1522 return 0; 1745 return 0;
1523} 1746}
1524 1747
1525static int 1748static int
… …
1527{ 1750{
1528 struct coro *coro; 1751 struct coro *coro;
1529 SV *sv_hook; 1752 SV *sv_hook;
1530 void (*xs_hook)(void); 1753 void (*xs_hook)(void);
1531 1754
1532 if (SvROK (coro_sv))
1533 coro_sv = SvRV (coro_sv);
1534
1535 coro = SvSTATE (coro_sv); 1755 coro = SvSTATE (coro_sv);
1536 1756
1537 if (coro->flags & CF_READY) 1757 if (coro->flags & CF_READY)
1538 return 0; 1758 return 0;
1539 1759
1540 coro->flags |= CF_READY; 1760 coro->flags |= CF_READY;
1541 1761
1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1762 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1763 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546 1764
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1765 coro_enq (aTHX_ coro);
1548 ++coro_nready; 1766 ++coro_nready;
1549 1767
1550 UNLOCK;
1551
1552 if (sv_hook) 1768 if (sv_hook)
1553 { 1769 {
1554 dSP; 1770 dSP;
1555 1771
1556 ENTER; 1772 ENTER;
1557 SAVETMPS; 1773 SAVETMPS;
1558 1774
1559 PUSHMARK (SP); 1775 PUSHMARK (SP);
1560 PUTBACK; 1776 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD); 1777 call_sv (sv_hook, G_VOID | G_DISCARD);
1562 SPAGAIN;
1563 1778
1564 FREETMPS; 1779 FREETMPS;
1565 LEAVE; 1780 LEAVE;
1566 } 1781 }
1567 1782
… …
1575api_is_ready (pTHX_ SV *coro_sv) 1790api_is_ready (pTHX_ SV *coro_sv)
1576{ 1791{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1792 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1793}
1579 1794
1795/* expects to own a reference to next->hv */
1580INLINE void 1796INLINE void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1797prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1798{
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); 1799 SV *prev_sv = SvRV (coro_current);
1800
1627 ta->prev = SvSTATE (prev_sv); 1801 ta->prev = SvSTATE_hv (prev_sv);
1802 ta->next = next;
1803
1628 TRANSFER_CHECK (*ta); 1804 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1805
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1806 SvRV_set (coro_current, (SV *)next->hv);
1632 1807
1633 LOCK;
1634 free_coro_mortal (aTHX); 1808 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1809 coro_mortal = prev_sv;
1636 UNLOCK; 1810}
1811
1812static void
1813prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1814{
1815 for (;;)
1816 {
1817 struct coro *next = coro_deq (aTHX);
1818
1819 if (expect_true (next))
1820 {
1821 /* cannot transfer to destroyed coros, skip and look for next */
1822 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1823 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1824 else
1825 {
1826 next->flags &= ~CF_READY;
1827 --coro_nready;
1828
1829 prepare_schedule_to (aTHX_ ta, next);
1830 break;
1831 }
1832 }
1833 else
1834 {
1835 /* nothing to schedule: call the idle handler */
1836 if (SvROK (sv_idle)
1837 && SvOBJECT (SvRV (sv_idle)))
1838 {
1839 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1840 api_ready (aTHX_ SvRV (sv_idle));
1841 --coro_nready;
1842 }
1843 else
1844 {
1845 dSP;
1846
1847 ENTER;
1848 SAVETMPS;
1849
1850 PUSHMARK (SP);
1851 PUTBACK;
1852 call_sv (sv_idle, G_VOID | G_DISCARD);
1853
1854 FREETMPS;
1855 LEAVE;
1856 }
1857 }
1858 }
1637} 1859}
1638 1860
1639INLINE void 1861INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1862prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1863{
… …
1662{ 1884{
1663 struct coro_transfer_args ta; 1885 struct coro_transfer_args ta;
1664 1886
1665 prepare_schedule (aTHX_ &ta); 1887 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1888 TRANSFER (ta, 1);
1889}
1890
1891static void
1892api_schedule_to (pTHX_ SV *coro_sv)
1893{
1894 struct coro_transfer_args ta;
1895 struct coro *next = SvSTATE (coro_sv);
1896
1897 SvREFCNT_inc_NN (coro_sv);
1898 prepare_schedule_to (aTHX_ &ta, next);
1667} 1899}
1668 1900
1669static int 1901static int
1670api_cede (pTHX) 1902api_cede (pTHX)
1671{ 1903{
… …
1700static void 1932static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 1933api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 1934{
1703 struct coro *coro = SvSTATE (coro_sv); 1935 struct coro *coro = SvSTATE (coro_sv);
1704 1936
1937 if (coro->flags & CF_RUNNING)
1938 croak ("cannot enable tracing on a running coroutine, caught");
1939
1705 if (flags & CC_TRACE) 1940 if (flags & CC_TRACE)
1706 { 1941 {
1707 if (!coro->cctx) 1942 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 1943 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 1944 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 1945 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 1946
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1947 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 1948 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1949 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 1950 {
… …
1718 if (coro->flags & CF_RUNNING) 1953 if (coro->flags & CF_RUNNING)
1719 PL_runops = RUNOPS_DEFAULT; 1954 PL_runops = RUNOPS_DEFAULT;
1720 else 1955 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1956 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1957 }
1958}
1959
1960static void
1961coro_call_on_destroy (pTHX_ struct coro *coro)
1962{
1963 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1964 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1965
1966 if (on_destroyp)
1967 {
1968 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1969
1970 while (AvFILLp (on_destroy) >= 0)
1971 {
1972 dSP; /* don't disturb outer sp */
1973 SV *cb = av_pop (on_destroy);
1974
1975 PUSHMARK (SP);
1976
1977 if (statusp)
1978 {
1979 int i;
1980 AV *status = (AV *)SvRV (*statusp);
1981 EXTEND (SP, AvFILLp (status) + 1);
1982
1983 for (i = 0; i <= AvFILLp (status); ++i)
1984 PUSHs (AvARRAY (status)[i]);
1985 }
1986
1987 PUTBACK;
1988 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1989 }
1990 }
1991}
1992
1993static void
1994slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1995{
1996 int i;
1997 HV *hv = (HV *)SvRV (coro_current);
1998 AV *av = newAV ();
1999
2000 av_extend (av, items - 1);
2001 for (i = 0; i < items; ++i)
2002 av_push (av, SvREFCNT_inc_NN (arg [i]));
2003
2004 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2005
2006 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2007 api_ready (aTHX_ sv_manager);
2008
2009 frame->prepare = prepare_schedule;
2010 frame->check = slf_check_repeat;
2011
2012 /* as a minor optimisation, we could unwind all stacks here */
2013 /* but that puts extra pressure on pp_slf, and is not worth much */
2014 /*coro_unwind_stacks (aTHX);*/
2015}
2016
2017/*****************************************************************************/
2018/* async pool handler */
2019
2020static int
2021slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2022{
2023 HV *hv = (HV *)SvRV (coro_current);
2024 struct coro *coro = (struct coro *)frame->data;
2025
2026 if (!coro->invoke_cb)
2027 return 1; /* loop till we have invoke */
2028 else
2029 {
2030 hv_store (hv, "desc", sizeof ("desc") - 1,
2031 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2032
2033 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2034
2035 {
2036 dSP;
2037 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2038 PUTBACK;
2039 }
2040
2041 SvREFCNT_dec (GvAV (PL_defgv));
2042 GvAV (PL_defgv) = coro->invoke_av;
2043 coro->invoke_av = 0;
2044
2045 return 0;
2046 }
2047}
2048
2049static void
2050slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2051{
2052 HV *hv = (HV *)SvRV (coro_current);
2053 struct coro *coro = SvSTATE_hv ((SV *)hv);
2054
2055 if (expect_true (coro->saved_deffh))
2056 {
2057 /* subsequent iteration */
2058 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2059 coro->saved_deffh = 0;
2060
2061 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2062 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2063 {
2064 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2065 coro->invoke_av = newAV ();
2066
2067 frame->prepare = prepare_nop;
2068 }
2069 else
2070 {
2071 av_clear (GvAV (PL_defgv));
2072 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2073
2074 coro->prio = 0;
2075
2076 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2077 api_trace (aTHX_ coro_current, 0);
2078
2079 frame->prepare = prepare_schedule;
2080 av_push (av_async_pool, SvREFCNT_inc (hv));
2081 }
2082 }
2083 else
2084 {
2085 /* first iteration, simply fall through */
2086 frame->prepare = prepare_nop;
2087 }
2088
2089 frame->check = slf_check_pool_handler;
2090 frame->data = (void *)coro;
2091}
2092
2093/*****************************************************************************/
2094/* rouse callback */
2095
2096#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2097
2098static void
2099coro_rouse_callback (pTHX_ CV *cv)
2100{
2101 dXSARGS;
2102 SV *data = (SV *)GENSUB_ARG;
2103
2104 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2105 {
2106 /* first call, set args */
2107 SV *coro = SvRV (data);
2108 AV *av = newAV ();
2109
2110 SvRV_set (data, (SV *)av);
2111
2112 /* better take a full copy of the arguments */
2113 while (items--)
2114 av_store (av, items, newSVsv (ST (items)));
2115
2116 api_ready (aTHX_ coro);
2117 SvREFCNT_dec (coro);
2118 }
2119
2120 XSRETURN_EMPTY;
2121}
2122
2123static int
2124slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2125{
2126 SV *data = (SV *)frame->data;
2127
2128 if (CORO_THROW)
2129 return 0;
2130
2131 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2132 return 1;
2133
2134 /* now push all results on the stack */
2135 {
2136 dSP;
2137 AV *av = (AV *)SvRV (data);
2138 int i;
2139
2140 EXTEND (SP, AvFILLp (av) + 1);
2141 for (i = 0; i <= AvFILLp (av); ++i)
2142 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2143
2144 /* we have stolen the elements, so set length to zero and free */
2145 AvFILLp (av) = -1;
2146 av_undef (av);
2147
2148 PUTBACK;
2149 }
2150
2151 return 0;
2152}
2153
2154static void
2155slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2156{
2157 SV *cb;
2158
2159 if (items)
2160 cb = arg [0];
2161 else
2162 {
2163 struct coro *coro = SvSTATE_current;
2164
2165 if (!coro->rouse_cb)
2166 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2167
2168 cb = sv_2mortal (coro->rouse_cb);
2169 coro->rouse_cb = 0;
2170 }
2171
2172 if (!SvROK (cb)
2173 || SvTYPE (SvRV (cb)) != SVt_PVCV
2174 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2175 croak ("Coro::rouse_wait called with illegal callback argument,");
2176
2177 {
2178 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2179 SV *data = (SV *)GENSUB_ARG;
2180
2181 frame->data = (void *)data;
2182 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2183 frame->check = slf_check_rouse_wait;
2184 }
2185}
2186
2187static SV *
2188coro_new_rouse_cb (pTHX)
2189{
2190 HV *hv = (HV *)SvRV (coro_current);
2191 struct coro *coro = SvSTATE_hv (hv);
2192 SV *data = newRV_inc ((SV *)hv);
2193 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2194
2195 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2196 SvREFCNT_dec (data); /* magicext increases the refcount */
2197
2198 SvREFCNT_dec (coro->rouse_cb);
2199 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2200
2201 return cb;
2202}
2203
2204/*****************************************************************************/
2205/* schedule-like-function opcode (SLF) */
2206
2207static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2208static const CV *slf_cv;
2209static SV **slf_argv;
2210static int slf_argc, slf_arga; /* count, allocated */
2211static I32 slf_ax; /* top of stack, for restore */
2212
2213/* this restores the stack in the case we patched the entersub, to */
2214/* recreate the stack frame as perl will on following calls */
2215/* since entersub cleared the stack */
2216static OP *
2217pp_restore (pTHX)
2218{
2219 int i;
2220 SV **SP = PL_stack_base + slf_ax;
2221
2222 PUSHMARK (SP);
2223
2224 EXTEND (SP, slf_argc + 1);
2225
2226 for (i = 0; i < slf_argc; ++i)
2227 PUSHs (sv_2mortal (slf_argv [i]));
2228
2229 PUSHs ((SV *)CvGV (slf_cv));
2230
2231 RETURNOP (slf_restore.op_first);
2232}
2233
2234static void
2235slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2236{
2237 SV **arg = (SV **)slf_frame.data;
2238
2239 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2240}
2241
2242static void
2243slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2244{
2245 if (items != 2)
2246 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2247
2248 frame->prepare = slf_prepare_transfer;
2249 frame->check = slf_check_nop;
2250 frame->data = (void *)arg; /* let's hope it will stay valid */
2251}
2252
2253static void
2254slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2255{
2256 frame->prepare = prepare_schedule;
2257 frame->check = slf_check_nop;
2258}
2259
2260static void
2261slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2262{
2263 struct coro *next = (struct coro *)slf_frame.data;
2264
2265 SvREFCNT_inc_NN (next->hv);
2266 prepare_schedule_to (aTHX_ ta, next);
2267}
2268
2269static void
2270slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2271{
2272 if (!items)
2273 croak ("Coro::schedule_to expects a coroutine argument, caught");
2274
2275 frame->data = (void *)SvSTATE (arg [0]);
2276 frame->prepare = slf_prepare_schedule_to;
2277 frame->check = slf_check_nop;
2278}
2279
2280static void
2281slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2282{
2283 api_ready (aTHX_ SvRV (coro_current));
2284
2285 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2286}
2287
2288static void
2289slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2290{
2291 frame->prepare = prepare_cede;
2292 frame->check = slf_check_nop;
2293}
2294
2295static void
2296slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2297{
2298 frame->prepare = prepare_cede_notself;
2299 frame->check = slf_check_nop;
2300}
2301
2302/*
2303 * these not obviously related functions are all rolled into one
2304 * function to increase chances that they all will call transfer with the same
2305 * stack offset
2306 * SLF stands for "schedule-like-function".
2307 */
2308static OP *
2309pp_slf (pTHX)
2310{
2311 I32 checkmark; /* mark SP to see how many elements check has pushed */
2312
2313 /* set up the slf frame, unless it has already been set-up */
2314 /* the latter happens when a new coro has been started */
2315 /* or when a new cctx was attached to an existing coroutine */
2316 if (expect_true (!slf_frame.prepare))
2317 {
2318 /* first iteration */
2319 dSP;
2320 SV **arg = PL_stack_base + TOPMARK + 1;
2321 int items = SP - arg; /* args without function object */
2322 SV *gv = *sp;
2323
2324 /* do a quick consistency check on the "function" object, and if it isn't */
2325 /* for us, divert to the real entersub */
2326 if (SvTYPE (gv) != SVt_PVGV
2327 || !GvCV (gv)
2328 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2329 return PL_ppaddr[OP_ENTERSUB](aTHX);
2330
2331 if (!(PL_op->op_flags & OPf_STACKED))
2332 {
2333 /* ampersand-form of call, use @_ instead of stack */
2334 AV *av = GvAV (PL_defgv);
2335 arg = AvARRAY (av);
2336 items = AvFILLp (av) + 1;
2337 }
2338
2339 /* now call the init function, which needs to set up slf_frame */
2340 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2341 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2342
2343 /* pop args */
2344 SP = PL_stack_base + POPMARK;
2345
2346 PUTBACK;
2347 }
2348
2349 /* now that we have a slf_frame, interpret it! */
2350 /* we use a callback system not to make the code needlessly */
2351 /* complicated, but so we can run multiple perl coros from one cctx */
2352
2353 do
2354 {
2355 struct coro_transfer_args ta;
2356
2357 slf_frame.prepare (aTHX_ &ta);
2358 TRANSFER (ta, 0);
2359
2360 checkmark = PL_stack_sp - PL_stack_base;
2361 }
2362 while (slf_frame.check (aTHX_ &slf_frame));
2363
2364 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2365
2366 /* exception handling */
2367 if (expect_false (CORO_THROW))
2368 {
2369 SV *exception = sv_2mortal (CORO_THROW);
2370
2371 CORO_THROW = 0;
2372 sv_setsv (ERRSV, exception);
2373 croak (0);
2374 }
2375
2376 /* return value handling - mostly like entersub */
2377 /* make sure we put something on the stack in scalar context */
2378 if (GIMME_V == G_SCALAR)
2379 {
2380 dSP;
2381 SV **bot = PL_stack_base + checkmark;
2382
2383 if (sp == bot) /* too few, push undef */
2384 bot [1] = &PL_sv_undef;
2385 else if (sp != bot + 1) /* too many, take last one */
2386 bot [1] = *sp;
2387
2388 SP = bot + 1;
2389
2390 PUTBACK;
2391 }
2392
2393 return NORMAL;
2394}
2395
2396static void
2397api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2398{
2399 int i;
2400 SV **arg = PL_stack_base + ax;
2401 int items = PL_stack_sp - arg + 1;
2402
2403 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2404
2405 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2406 && PL_op->op_ppaddr != pp_slf)
2407 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2408
2409 CvFLAGS (cv) |= CVf_SLF;
2410 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2411 slf_cv = cv;
2412
2413 /* we patch the op, and then re-run the whole call */
2414 /* we have to put the same argument on the stack for this to work */
2415 /* and this will be done by pp_restore */
2416 slf_restore.op_next = (OP *)&slf_restore;
2417 slf_restore.op_type = OP_CUSTOM;
2418 slf_restore.op_ppaddr = pp_restore;
2419 slf_restore.op_first = PL_op;
2420
2421 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2422
2423 if (PL_op->op_flags & OPf_STACKED)
2424 {
2425 if (items > slf_arga)
2426 {
2427 slf_arga = items;
2428 free (slf_argv);
2429 slf_argv = malloc (slf_arga * sizeof (SV *));
2430 }
2431
2432 slf_argc = items;
2433
2434 for (i = 0; i < items; ++i)
2435 slf_argv [i] = SvREFCNT_inc (arg [i]);
2436 }
2437 else
2438 slf_argc = 0;
2439
2440 PL_op->op_ppaddr = pp_slf;
2441 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2442
2443 PL_op = (OP *)&slf_restore;
2444}
2445
2446/*****************************************************************************/
2447/* dynamic wind */
2448
2449static void
2450on_enterleave_call (pTHX_ SV *cb)
2451{
2452 dSP;
2453
2454 PUSHSTACK;
2455
2456 PUSHMARK (SP);
2457 PUTBACK;
2458 call_sv (cb, G_VOID | G_DISCARD);
2459 SPAGAIN;
2460
2461 POPSTACK;
2462}
2463
2464static SV *
2465coro_avp_pop_and_free (pTHX_ AV **avp)
2466{
2467 AV *av = *avp;
2468 SV *res = av_pop (av);
2469
2470 if (AvFILLp (av) < 0)
2471 {
2472 *avp = 0;
2473 SvREFCNT_dec (av);
2474 }
2475
2476 return res;
2477}
2478
2479static void
2480coro_pop_on_enter (pTHX_ void *coro)
2481{
2482 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2483 SvREFCNT_dec (cb);
2484}
2485
2486static void
2487coro_pop_on_leave (pTHX_ void *coro)
2488{
2489 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2490 on_enterleave_call (aTHX_ sv_2mortal (cb));
1723} 2491}
1724 2492
1725/*****************************************************************************/ 2493/*****************************************************************************/
1726/* PerlIO::cede */ 2494/* PerlIO::cede */
1727 2495
… …
1796 PerlIOBuf_get_cnt, 2564 PerlIOBuf_get_cnt,
1797 PerlIOBuf_set_ptrcnt, 2565 PerlIOBuf_set_ptrcnt,
1798}; 2566};
1799 2567
1800/*****************************************************************************/ 2568/*****************************************************************************/
2569/* Coro::Semaphore & Coro::Signal */
1801 2570
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 * 2571static SV *
1813pp_restore (pTHX) 2572coro_waitarray_new (pTHX_ int count)
1814{ 2573{
1815 dSP; 2574 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2575 AV *av = newAV ();
2576 SV **ary;
1816 2577
1817 PUSHMARK (SP); 2578 /* unfortunately, building manually saves memory */
2579 Newx (ary, 2, SV *);
2580 AvALLOC (av) = ary;
2581#if PERL_VERSION_ATLEAST (5,10,0)
2582 AvARRAY (av) = ary;
2583#else
2584 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2585 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2586 SvPVX ((SV *)av) = (char *)ary;
2587#endif
2588 AvMAX (av) = 1;
2589 AvFILLp (av) = 0;
2590 ary [0] = newSViv (count);
1818 2591
1819 EXTEND (SP, 3); 2592 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} 2593}
1827 2594
1828static void 2595/* 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 2596
1834static void 2597static void
1835slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2598coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1836{ 2599{
1837 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2600 SV *count_sv = AvARRAY (av)[0];
2601 IV count = SvIVX (count_sv);
1838 2602
1839 frame->prepare = slf_prepare_set_stacklevel; 2603 count += adjust;
1840 frame->check = slf_check_nop; 2604 SvIVX (count_sv) = count;
1841 frame->data = (void *)SvIV (arg [0]);
1842}
1843 2605
1844static void 2606 /* now wake up as many waiters as are expected to lock */
1845slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2607 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 { 2608 {
1903 /* first iteration */ 2609 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 2610
1909 /* do a quick consistency check on the "function" object, and if it isn't */ 2611 /* swap first two elements so we can shift a waiter */
1910 /* for us, divert to the real entersub */ 2612 AvARRAY (av)[0] = AvARRAY (av)[1];
1911 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2613 AvARRAY (av)[1] = count_sv;
1912 return PL_ppaddr[OP_ENTERSUB](aTHX); 2614 cb = av_shift (av);
1913 2615
1914 /* pop args */ 2616 if (SvOBJECT (cb))
1915 SP = PL_stack_base + POPMARK;
1916
1917 if (!(PL_op->op_flags & OPf_STACKED))
1918 { 2617 {
1919 /* ampersand-form of call, use @_ instead of stack */ 2618 api_ready (aTHX_ cb);
1920 AV *av = GvAV (PL_defgv); 2619 --count;
1921 arg = AvARRAY (av);
1922 items = AvFILLp (av) + 1;
1923 } 2620 }
1924 2621 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 { 2622 {
1955 if (sp == bot) 2623 dSP;
1956 XPUSHs (&PL_sv_undef); 2624 PUSHMARK (SP);
1957 2625 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1958 SP = bot + 1; 2626 PUTBACK;
2627 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1959 } 2628 }
1960 2629
1961 PUTBACK; 2630 SvREFCNT_dec (cb);
1962 } 2631 }
1963
1964 return NORMAL;
1965} 2632}
1966 2633
1967static void 2634static void
1968api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2635coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1969{ 2636{
1970 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2637 /* call $sem->adjust (0) to possibly wake up some other waiters */
1971 2638 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} 2639}
1999
2000/*****************************************************************************/
2001 2640
2002static int 2641static int
2003slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2642slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2004{ 2643{
2005 AV *av = (AV *)frame->data; 2644 AV *av = (AV *)frame->data;
2006 SV *count_sv = AvARRAY (av)[0]; 2645 SV *count_sv = AvARRAY (av)[0];
2007 2646
2647 /* if we are about to throw, don't actually acquire the lock, just throw */
2648 if (CORO_THROW)
2649 return 0;
2008 if (SvIVX (count_sv) > 0) 2650 else if (SvIVX (count_sv) > 0)
2009 { 2651 {
2652 SvSTATE_current->on_destroy = 0;
2653
2654 if (acquire)
2010 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2655 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2656 else
2657 coro_semaphore_adjust (aTHX_ av, 0);
2658
2011 return 0; 2659 return 0;
2012 } 2660 }
2013 else 2661 else
2014 { 2662 {
2015 int i; 2663 int i;
… …
2024 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2672 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2025 return 1; 2673 return 1;
2026 } 2674 }
2027} 2675}
2028 2676
2029static void 2677static int
2678slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2679{
2680 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2681}
2682
2683static int
2684slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2685{
2686 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2687}
2688
2689static void
2030slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2690slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2031{ 2691{
2032 AV *av = (AV *)SvRV (arg [0]); 2692 AV *av = (AV *)SvRV (arg [0]);
2033 2693
2034 if (SvIVX (AvARRAY (av)[0]) > 0) 2694 if (SvIVX (AvARRAY (av)[0]) > 0)
2035 { 2695 {
… …
2040 { 2700 {
2041 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2701 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2042 2702
2043 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2703 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2044 frame->prepare = prepare_schedule; 2704 frame->prepare = prepare_schedule;
2045 }
2046 2705
2706 /* to avoid race conditions when a woken-up coro gets terminated */
2707 /* we arrange for a temporary on_destroy that calls adjust (0) */
2708 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2709 }
2710}
2711
2712static void
2713slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2714{
2715 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2047 frame->check = slf_check_semaphore_down; 2716 frame->check = slf_check_semaphore_down;
2717}
2048 2718
2719static void
2720slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2721{
2722 if (items >= 2)
2723 {
2724 /* callback form */
2725 AV *av = (AV *)SvRV (arg [0]);
2726 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2727
2728 av_push (av, SvREFCNT_inc_NN (cb_cv));
2729
2730 if (SvIVX (AvARRAY (av)[0]) > 0)
2731 coro_semaphore_adjust (aTHX_ av, 0);
2732
2733 frame->prepare = prepare_nop;
2734 frame->check = slf_check_nop;
2735 }
2736 else
2737 {
2738 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2739 frame->check = slf_check_semaphore_wait;
2740 }
2741}
2742
2743/* signal */
2744
2745static void
2746coro_signal_wake (pTHX_ AV *av, int count)
2747{
2748 SvIVX (AvARRAY (av)[0]) = 0;
2749
2750 /* now signal count waiters */
2751 while (count > 0 && AvFILLp (av) > 0)
2752 {
2753 SV *cb;
2754
2755 /* swap first two elements so we can shift a waiter */
2756 cb = AvARRAY (av)[0];
2757 AvARRAY (av)[0] = AvARRAY (av)[1];
2758 AvARRAY (av)[1] = cb;
2759
2760 cb = av_shift (av);
2761
2762 if (SvTYPE (cb) == SVt_PVCV)
2763 {
2764 dSP;
2765 PUSHMARK (SP);
2766 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2767 PUTBACK;
2768 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2769 }
2770 else
2771 {
2772 api_ready (aTHX_ cb);
2773 sv_setiv (cb, 0); /* signal waiter */
2774 }
2775
2776 SvREFCNT_dec (cb);
2777
2778 --count;
2779 }
2780}
2781
2782static int
2783slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2784{
2785 /* if we are about to throw, also stop waiting */
2786 return SvROK ((SV *)frame->data) && !CORO_THROW;
2787}
2788
2789static void
2790slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2791{
2792 AV *av = (AV *)SvRV (arg [0]);
2793
2794 if (items >= 2)
2795 {
2796 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2797 av_push (av, SvREFCNT_inc_NN (cb_cv));
2798
2799 if (SvIVX (AvARRAY (av)[0]))
2800 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2801
2802 frame->prepare = prepare_nop;
2803 frame->check = slf_check_nop;
2804 }
2805 else if (SvIVX (AvARRAY (av)[0]))
2806 {
2807 SvIVX (AvARRAY (av)[0]) = 0;
2808 frame->prepare = prepare_nop;
2809 frame->check = slf_check_nop;
2810 }
2811 else
2812 {
2813 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2814
2815 av_push (av, waiter);
2816
2817 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2818 frame->prepare = prepare_schedule;
2819 frame->check = slf_check_signal_wait;
2820 }
2049} 2821}
2050 2822
2051/*****************************************************************************/ 2823/*****************************************************************************/
2824/* Coro::AIO */
2052 2825
2053#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2826#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2054 2827
2055/* create a closure from XS, returns a code reference */ 2828/* helper storage struct */
2056/* the arg can be accessed via GENSUB_ARG from the callback */ 2829struct io_state
2057/* the callback must use dXSARGS/XSRETURN */
2058static SV *
2059gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2060{ 2830{
2061 CV *cv = (CV *)NEWSV (0, 0); 2831 int errorno;
2832 I32 laststype; /* U16 in 5.10.0 */
2833 int laststatval;
2834 Stat_t statcache;
2835};
2062 2836
2837static void
2838coro_aio_callback (pTHX_ CV *cv)
2839{
2840 dXSARGS;
2841 AV *state = (AV *)GENSUB_ARG;
2842 SV *coro = av_pop (state);
2843 SV *data_sv = newSV (sizeof (struct io_state));
2844
2845 av_extend (state, items - 1);
2846
2063 sv_upgrade ((SV *)cv, SVt_PVCV); 2847 sv_upgrade (data_sv, SVt_PV);
2848 SvCUR_set (data_sv, sizeof (struct io_state));
2849 SvPOK_only (data_sv);
2064 2850
2065 CvANON_on (cv); 2851 {
2066 CvISXSUB_on (cv); 2852 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2067 CvXSUB (cv) = xsub;
2068 GENSUB_ARG = arg;
2069 2853
2070 return newRV_noinc ((SV *)cv); 2854 data->errorno = errno;
2855 data->laststype = PL_laststype;
2856 data->laststatval = PL_laststatval;
2857 data->statcache = PL_statcache;
2858 }
2859
2860 /* now build the result vector out of all the parameters and the data_sv */
2861 {
2862 int i;
2863
2864 for (i = 0; i < items; ++i)
2865 av_push (state, SvREFCNT_inc_NN (ST (i)));
2866 }
2867
2868 av_push (state, data_sv);
2869
2870 api_ready (aTHX_ coro);
2871 SvREFCNT_dec (coro);
2872 SvREFCNT_dec ((AV *)state);
2873}
2874
2875static int
2876slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2877{
2878 AV *state = (AV *)frame->data;
2879
2880 /* if we are about to throw, return early */
2881 /* this does not cancel the aio request, but at least */
2882 /* it quickly returns */
2883 if (CORO_THROW)
2884 return 0;
2885
2886 /* one element that is an RV? repeat! */
2887 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2888 return 1;
2889
2890 /* restore status */
2891 {
2892 SV *data_sv = av_pop (state);
2893 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2894
2895 errno = data->errorno;
2896 PL_laststype = data->laststype;
2897 PL_laststatval = data->laststatval;
2898 PL_statcache = data->statcache;
2899
2900 SvREFCNT_dec (data_sv);
2901 }
2902
2903 /* push result values */
2904 {
2905 dSP;
2906 int i;
2907
2908 EXTEND (SP, AvFILLp (state) + 1);
2909 for (i = 0; i <= AvFILLp (state); ++i)
2910 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2911
2912 PUTBACK;
2913 }
2914
2915 return 0;
2916}
2917
2918static void
2919slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2920{
2921 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2922 SV *coro_hv = SvRV (coro_current);
2923 struct coro *coro = SvSTATE_hv (coro_hv);
2924
2925 /* put our coroutine id on the state arg */
2926 av_push (state, SvREFCNT_inc_NN (coro_hv));
2927
2928 /* first see whether we have a non-zero priority and set it as AIO prio */
2929 if (coro->prio)
2930 {
2931 dSP;
2932
2933 static SV *prio_cv;
2934 static SV *prio_sv;
2935
2936 if (expect_false (!prio_cv))
2937 {
2938 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2939 prio_sv = newSViv (0);
2940 }
2941
2942 PUSHMARK (SP);
2943 sv_setiv (prio_sv, coro->prio);
2944 XPUSHs (prio_sv);
2945
2946 PUTBACK;
2947 call_sv (prio_cv, G_VOID | G_DISCARD);
2948 }
2949
2950 /* now call the original request */
2951 {
2952 dSP;
2953 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2954 int i;
2955
2956 PUSHMARK (SP);
2957
2958 /* first push all args to the stack */
2959 EXTEND (SP, items + 1);
2960
2961 for (i = 0; i < items; ++i)
2962 PUSHs (arg [i]);
2963
2964 /* now push the callback closure */
2965 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2966
2967 /* now call the AIO function - we assume our request is uncancelable */
2968 PUTBACK;
2969 call_sv ((SV *)req, G_VOID | G_DISCARD);
2970 }
2971
2972 /* now that the requets is going, we loop toll we have a result */
2973 frame->data = (void *)state;
2974 frame->prepare = prepare_schedule;
2975 frame->check = slf_check_aio_req;
2976}
2977
2978static void
2979coro_aio_req_xs (pTHX_ CV *cv)
2980{
2981 dXSARGS;
2982
2983 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2984
2985 XSRETURN_EMPTY;
2071} 2986}
2072 2987
2073/*****************************************************************************/ 2988/*****************************************************************************/
2074 2989
2990#if CORO_CLONE
2991# include "clone.c"
2992#endif
2993
2075MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2994MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2076 2995
2077PROTOTYPES: DISABLE 2996PROTOTYPES: DISABLE
2078 2997
2079BOOT: 2998BOOT:
2080{ 2999{
2081#ifdef USE_ITHREADS 3000#ifdef USE_ITHREADS
2082 MUTEX_INIT (&coro_lock);
2083# if CORO_PTHREAD 3001# if CORO_PTHREAD
2084 coro_thx = PERL_GET_CONTEXT; 3002 coro_thx = PERL_GET_CONTEXT;
2085# endif 3003# endif
2086#endif 3004#endif
2087 BOOT_PAGESIZE; 3005 BOOT_PAGESIZE;
3006
3007 cctx_current = cctx_new_empty ();
2088 3008
2089 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3009 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2090 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3010 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2091 3011
2092 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3012 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2107 main_mainstack = PL_mainstack; 3027 main_mainstack = PL_mainstack;
2108 main_top_env = PL_top_env; 3028 main_top_env = PL_top_env;
2109 3029
2110 while (main_top_env->je_prev) 3030 while (main_top_env->je_prev)
2111 main_top_env = main_top_env->je_prev; 3031 main_top_env = main_top_env->je_prev;
3032
3033 {
3034 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3035
3036 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3037 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3038
3039 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3040 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3041 }
2112 3042
2113 coroapi.ver = CORO_API_VERSION; 3043 coroapi.ver = CORO_API_VERSION;
2114 coroapi.rev = CORO_API_REVISION; 3044 coroapi.rev = CORO_API_REVISION;
2115 3045
2116 coroapi.transfer = api_transfer; 3046 coroapi.transfer = api_transfer;
… …
2127 3057
2128 if (!svp) croak ("Time::HiRes is required"); 3058 if (!svp) croak ("Time::HiRes is required");
2129 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3059 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2130 3060
2131 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3061 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3062
3063 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3064 u2time = INT2PTR (double (*)(), SvIV (*svp));
2132 } 3065 }
2133 3066
2134 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3067 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2135} 3068}
2136 3069
2137SV * 3070SV *
2138new (char *klass, ...) 3071new (char *klass, ...)
3072 ALIAS:
3073 Coro::new = 1
2139 CODE: 3074 CODE:
2140{ 3075{
2141 struct coro *coro; 3076 struct coro *coro;
2142 MAGIC *mg; 3077 MAGIC *mg;
2143 HV *hv; 3078 HV *hv;
3079 CV *cb;
2144 int i; 3080 int i;
3081
3082 if (items > 1)
3083 {
3084 cb = coro_sv_2cv (aTHX_ ST (1));
3085
3086 if (!ix)
3087 {
3088 if (CvISXSUB (cb))
3089 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3090
3091 if (!CvROOT (cb))
3092 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3093 }
3094 }
2145 3095
2146 Newz (0, coro, 1, struct coro); 3096 Newz (0, coro, 1, struct coro);
2147 coro->args = newAV (); 3097 coro->args = newAV ();
2148 coro->flags = CF_NEW; 3098 coro->flags = CF_NEW;
2149 3099
… …
2154 coro->hv = hv = newHV (); 3104 coro->hv = hv = newHV ();
2155 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 3105 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2156 mg->mg_flags |= MGf_DUP; 3106 mg->mg_flags |= MGf_DUP;
2157 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3107 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2158 3108
3109 if (items > 1)
3110 {
2159 av_extend (coro->args, items - 1); 3111 av_extend (coro->args, items - 1 + ix - 1);
3112
3113 if (ix)
3114 {
3115 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3116 cb = cv_coro_run;
3117 }
3118
3119 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3120
2160 for (i = 1; i < items; i++) 3121 for (i = 2; i < items; i++)
2161 av_push (coro->args, newSVsv (ST (i))); 3122 av_push (coro->args, newSVsv (ST (i)));
3123 }
2162} 3124}
2163 OUTPUT: 3125 OUTPUT:
2164 RETVAL 3126 RETVAL
2165
2166void
2167_set_stacklevel (...)
2168 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2170 3127
2171void 3128void
2172transfer (...) 3129transfer (...)
2173 PROTOTYPE: $$ 3130 PROTOTYPE: $$
2174 CODE: 3131 CODE:
2175 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3132 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2176 3133
2177bool 3134bool
2178_destroy (SV *coro_sv) 3135_destroy (SV *coro_sv)
2179 CODE: 3136 CODE:
2180 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3137 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2184void 3141void
2185_exit (int code) 3142_exit (int code)
2186 PROTOTYPE: $ 3143 PROTOTYPE: $
2187 CODE: 3144 CODE:
2188 _exit (code); 3145 _exit (code);
3146
3147SV *
3148clone (Coro::State coro)
3149 CODE:
3150{
3151#if CORO_CLONE
3152 struct coro *ncoro = coro_clone (aTHX_ coro);
3153 MAGIC *mg;
3154 /* TODO: too much duplication */
3155 ncoro->hv = newHV ();
3156 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3157 mg->mg_flags |= MGf_DUP;
3158 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3159#else
3160 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3161#endif
3162}
3163 OUTPUT:
3164 RETVAL
2189 3165
2190int 3166int
2191cctx_stacksize (int new_stacksize = 0) 3167cctx_stacksize (int new_stacksize = 0)
2192 PROTOTYPE: ;$ 3168 PROTOTYPE: ;$
2193 CODE: 3169 CODE:
… …
2243 eval = 1 3219 eval = 1
2244 CODE: 3220 CODE:
2245{ 3221{
2246 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3222 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2247 { 3223 {
2248 struct coro temp; 3224 struct coro *current = SvSTATE_current;
2249 3225
2250 if (!(coro->flags & CF_RUNNING)) 3226 if (current != coro)
2251 { 3227 {
2252 PUTBACK; 3228 PUTBACK;
2253 save_perl (aTHX_ &temp); 3229 save_perl (aTHX_ current);
2254 load_perl (aTHX_ coro); 3230 load_perl (aTHX_ coro);
3231 SPAGAIN;
2255 } 3232 }
2256 3233
2257 {
2258 dSP;
2259 ENTER;
2260 SAVETMPS;
2261 PUTBACK;
2262 PUSHSTACK; 3234 PUSHSTACK;
3235
2263 PUSHMARK (SP); 3236 PUSHMARK (SP);
3237 PUTBACK;
2264 3238
2265 if (ix) 3239 if (ix)
2266 eval_sv (coderef, 0); 3240 eval_sv (coderef, 0);
2267 else 3241 else
2268 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3242 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2269 3243
2270 POPSTACK; 3244 POPSTACK;
2271 SPAGAIN; 3245 SPAGAIN;
2272 FREETMPS;
2273 LEAVE;
2274 PUTBACK;
2275 }
2276 3246
2277 if (!(coro->flags & CF_RUNNING)) 3247 if (current != coro)
2278 { 3248 {
3249 PUTBACK;
2279 save_perl (aTHX_ coro); 3250 save_perl (aTHX_ coro);
2280 load_perl (aTHX_ &temp); 3251 load_perl (aTHX_ current);
2281 SPAGAIN; 3252 SPAGAIN;
2282 } 3253 }
2283 } 3254 }
2284} 3255}
2285 3256
… …
2289 ALIAS: 3260 ALIAS:
2290 is_ready = CF_READY 3261 is_ready = CF_READY
2291 is_running = CF_RUNNING 3262 is_running = CF_RUNNING
2292 is_new = CF_NEW 3263 is_new = CF_NEW
2293 is_destroyed = CF_DESTROYED 3264 is_destroyed = CF_DESTROYED
3265 is_suspended = CF_SUSPENDED
2294 CODE: 3266 CODE:
2295 RETVAL = boolSV (coro->flags & ix); 3267 RETVAL = boolSV (coro->flags & ix);
2296 OUTPUT: 3268 OUTPUT:
2297 RETVAL 3269 RETVAL
2298 3270
2299void 3271void
2300throw (Coro::State self, SV *throw = &PL_sv_undef) 3272throw (Coro::State self, SV *throw = &PL_sv_undef)
2301 PROTOTYPE: $;$ 3273 PROTOTYPE: $;$
2302 CODE: 3274 CODE:
3275{
3276 struct coro *current = SvSTATE_current;
3277 SV **throwp = self == current ? &CORO_THROW : &self->except;
2303 SvREFCNT_dec (self->throw); 3278 SvREFCNT_dec (*throwp);
3279 SvGETMAGIC (throw);
2304 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3280 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3281}
2305 3282
2306void 3283void
2307api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3284api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2308 PROTOTYPE: $;$ 3285 PROTOTYPE: $;$
2309 C_ARGS: aTHX_ coro, flags 3286 C_ARGS: aTHX_ coro, flags
2310 3287
2311SV * 3288SV *
2312has_cctx (Coro::State coro) 3289has_cctx (Coro::State coro)
2313 PROTOTYPE: $ 3290 PROTOTYPE: $
2314 CODE: 3291 CODE:
2315 RETVAL = boolSV (!!coro->cctx); 3292 /* maybe manage the running flag differently */
3293 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2316 OUTPUT: 3294 OUTPUT:
2317 RETVAL 3295 RETVAL
2318 3296
2319int 3297int
2320is_traced (Coro::State coro) 3298is_traced (Coro::State coro)
… …
2340 3318
2341void 3319void
2342force_cctx () 3320force_cctx ()
2343 PROTOTYPE: 3321 PROTOTYPE:
2344 CODE: 3322 CODE:
2345 struct coro *coro = SvSTATE (coro_current);
2346 coro->cctx->idle_sp = 0; 3323 cctx_current->idle_sp = 0;
2347 3324
2348void 3325void
2349swap_defsv (Coro::State self) 3326swap_defsv (Coro::State self)
2350 PROTOTYPE: $ 3327 PROTOTYPE: $
2351 ALIAS: 3328 ALIAS:
… …
2359 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3336 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2360 3337
2361 SV *tmp = *src; *src = *dst; *dst = tmp; 3338 SV *tmp = *src; *src = *dst; *dst = tmp;
2362 } 3339 }
2363 3340
3341void
3342cancel (Coro::State self)
3343 CODE:
3344 coro_state_destroy (aTHX_ self);
3345 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3346
3347
3348SV *
3349enable_times (int enabled = enable_times)
3350 CODE:
3351{
3352 RETVAL = boolSV (enable_times);
3353
3354 if (enabled != enable_times)
3355 {
3356 enable_times = enabled;
3357
3358 coro_times_update ();
3359 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3360 }
3361}
3362 OUTPUT:
3363 RETVAL
3364
3365void
3366times (Coro::State self)
3367 PPCODE:
3368{
3369 struct coro *current = SvSTATE (coro_current);
3370
3371 if (expect_false (current == self))
3372 {
3373 coro_times_update ();
3374 coro_times_add (SvSTATE (coro_current));
3375 }
3376
3377 EXTEND (SP, 2);
3378 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3379 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3380
3381 if (expect_false (current == self))
3382 coro_times_sub (SvSTATE (coro_current));
3383}
3384
2364MODULE = Coro::State PACKAGE = Coro 3385MODULE = Coro::State PACKAGE = Coro
2365 3386
2366BOOT: 3387BOOT:
2367{ 3388{
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); 3389 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2372 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3390 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2373 3391 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3392 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2374 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3393 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2375 SvREADONLY_on (coro_current); 3394 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3395 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3396 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3397 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3398
3399 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3400 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3401 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3402 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2376 3403
2377 coro_stash = gv_stashpv ("Coro", TRUE); 3404 coro_stash = gv_stashpv ("Coro", TRUE);
2378 3405
2379 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3406 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2380 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3407 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2381 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3408 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2382 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3409 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2383 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3410 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2384 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3411 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 3412
2389 { 3413 {
2390 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3414 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2391 3415
2392 coroapi.schedule = api_schedule; 3416 coroapi.schedule = api_schedule;
3417 coroapi.schedule_to = api_schedule_to;
2393 coroapi.cede = api_cede; 3418 coroapi.cede = api_cede;
2394 coroapi.cede_notself = api_cede_notself; 3419 coroapi.cede_notself = api_cede_notself;
2395 coroapi.ready = api_ready; 3420 coroapi.ready = api_ready;
2396 coroapi.is_ready = api_is_ready; 3421 coroapi.is_ready = api_is_ready;
2397 coroapi.nready = coro_nready; 3422 coroapi.nready = coro_nready;
2398 coroapi.current = coro_current; 3423 coroapi.current = coro_current;
2399 3424
2400 GCoroAPI = &coroapi; 3425 /*GCoroAPI = &coroapi;*/
2401 sv_setiv (sv, (IV)&coroapi); 3426 sv_setiv (sv, (IV)&coroapi);
2402 SvREADONLY_on (sv); 3427 SvREADONLY_on (sv);
2403 } 3428 }
2404} 3429}
2405 3430
2406void 3431void
3432terminate (...)
3433 CODE:
3434 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3435
3436void
2407schedule (...) 3437schedule (...)
2408 CODE: 3438 CODE:
2409 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3439 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3440
3441void
3442schedule_to (...)
3443 CODE:
3444 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3445
3446void
3447cede_to (...)
3448 CODE:
3449 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2410 3450
2411void 3451void
2412cede (...) 3452cede (...)
2413 CODE: 3453 CODE:
2414 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3454 CORO_EXECUTE_SLF_XS (slf_init_cede);
2415 3455
2416void 3456void
2417cede_notself (...) 3457cede_notself (...)
2418 CODE: 3458 CODE:
2419 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3459 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2420 3460
2421void 3461void
2422_set_current (SV *current) 3462_set_current (SV *current)
2423 PROTOTYPE: $ 3463 PROTOTYPE: $
2424 CODE: 3464 CODE:
… …
2427 3467
2428void 3468void
2429_set_readyhook (SV *hook) 3469_set_readyhook (SV *hook)
2430 PROTOTYPE: $ 3470 PROTOTYPE: $
2431 CODE: 3471 CODE:
2432 LOCK;
2433 SvREFCNT_dec (coro_readyhook); 3472 SvREFCNT_dec (coro_readyhook);
3473 SvGETMAGIC (hook);
2434 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3474 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2435 UNLOCK;
2436 3475
2437int 3476int
2438prio (Coro::State coro, int newprio = 0) 3477prio (Coro::State coro, int newprio = 0)
2439 PROTOTYPE: $;$ 3478 PROTOTYPE: $;$
2440 ALIAS: 3479 ALIAS:
… …
2446 if (items > 1) 3485 if (items > 1)
2447 { 3486 {
2448 if (ix) 3487 if (ix)
2449 newprio = coro->prio - newprio; 3488 newprio = coro->prio - newprio;
2450 3489
2451 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3490 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2452 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3491 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2453 3492
2454 coro->prio = newprio; 3493 coro->prio = newprio;
2455 } 3494 }
2456} 3495}
2457 OUTPUT: 3496 OUTPUT:
… …
2471 CODE: 3510 CODE:
2472 RETVAL = coro_nready; 3511 RETVAL = coro_nready;
2473 OUTPUT: 3512 OUTPUT:
2474 RETVAL 3513 RETVAL
2475 3514
2476# for async_pool speedup
2477void 3515void
2478_pool_1 (SV *cb) 3516suspend (Coro::State self)
3517 PROTOTYPE: $
2479 CODE: 3518 CODE:
2480{ 3519 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 3520
2515void 3521void
2516_pool_2 (SV *cb) 3522resume (Coro::State self)
3523 PROTOTYPE: $
2517 CODE: 3524 CODE:
2518{ 3525 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 3526
2550void 3527void
2551_get_state (SV *self) 3528_pool_handler (...)
3529 CODE:
3530 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3531
3532void
3533async_pool (SV *cv, ...)
2552 PROTOTYPE: $ 3534 PROTOTYPE: &@
2553 PPCODE: 3535 PPCODE:
2554{ 3536{
2555 AV *defav = GvAV (PL_defgv); 3537 HV *hv = (HV *)av_pop (av_async_pool);
2556 AV *av = newAV (); 3538 AV *av = newAV ();
3539 SV *cb = ST (0);
2557 int i; 3540 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 3541
2563 data->errorno = errno; 3542 av_extend (av, items - 2);
2564 data->laststype = PL_laststype; 3543 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])); 3544 av_push (av, SvREFCNT_inc_NN (ST (i)));
2572 3545
2573 av_push (av, data_sv); 3546 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 { 3547 {
2620 PUSHMARK (SP); 3548 PUSHMARK (SP);
3549 EXTEND (SP, 2);
3550 PUSHs (sv_Coro);
3551 PUSHs ((SV *)cv_pool_handler);
2621 PUTBACK; 3552 PUTBACK;
2622 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3553 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2623 SPAGAIN; 3554 SPAGAIN;
3555
3556 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2624 } 3557 }
2625 3558
2626 --incede; 3559 {
3560 struct coro *coro = SvSTATE_hv (hv);
3561
3562 assert (!coro->invoke_cb);
3563 assert (!coro->invoke_av);
3564 coro->invoke_cb = SvREFCNT_inc (cb);
3565 coro->invoke_av = av;
3566 }
3567
3568 api_ready (aTHX_ (SV *)hv);
3569
3570 if (GIMME_V != G_VOID)
3571 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3572 else
3573 SvREFCNT_dec (hv);
3574}
3575
3576SV *
3577rouse_cb ()
3578 PROTOTYPE:
3579 CODE:
3580 RETVAL = coro_new_rouse_cb (aTHX);
3581 OUTPUT:
3582 RETVAL
3583
3584void
3585rouse_wait (...)
3586 PROTOTYPE: ;$
3587 PPCODE:
3588 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3589
3590void
3591on_enter (SV *block)
3592 ALIAS:
3593 on_leave = 1
3594 PROTOTYPE: &
3595 CODE:
3596{
3597 struct coro *coro = SvSTATE_current;
3598 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3599
3600 block = (SV *)coro_sv_2cv (aTHX_ block);
3601
3602 if (!*avp)
3603 *avp = newAV ();
3604
3605 av_push (*avp, SvREFCNT_inc (block));
3606
3607 if (!ix)
3608 on_enterleave_call (aTHX_ block);
3609
3610 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3611 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3612 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2627} 3613}
2628 3614
2629 3615
2630MODULE = Coro::State PACKAGE = PerlIO::cede 3616MODULE = Coro::State PACKAGE = PerlIO::cede
2631 3617
2632BOOT: 3618BOOT:
2633 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3619 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2634 3620
3621
2635MODULE = Coro::State PACKAGE = Coro::Semaphore 3622MODULE = Coro::State PACKAGE = Coro::Semaphore
2636 3623
2637SV * 3624SV *
2638new (SV *klass, SV *count_ = 0) 3625new (SV *klass, SV *count = 0)
2639 CODE: 3626 CODE:
2640{ 3627{
2641 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3628 int semcnt = 1;
2642 AV *av = newAV (); 3629
2643 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3630 if (count)
2644 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3631 {
3632 SvGETMAGIC (count);
3633
3634 if (SvOK (count))
3635 semcnt = SvIV (count);
3636 }
3637
3638 RETVAL = sv_bless (
3639 coro_waitarray_new (aTHX_ semcnt),
3640 GvSTASH (CvGV (cv))
3641 );
2645} 3642}
3643 OUTPUT:
3644 RETVAL
3645
3646# helper for Coro::Channel and others
3647SV *
3648_alloc (int count)
3649 CODE:
3650 RETVAL = coro_waitarray_new (aTHX_ count);
2646 OUTPUT: 3651 OUTPUT:
2647 RETVAL 3652 RETVAL
2648 3653
2649SV * 3654SV *
2650count (SV *self) 3655count (SV *self)
… …
2656void 3661void
2657up (SV *self, int adjust = 1) 3662up (SV *self, int adjust = 1)
2658 ALIAS: 3663 ALIAS:
2659 adjust = 1 3664 adjust = 1
2660 CODE: 3665 CODE:
2661{ 3666 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 3667
2688void 3668void
2689down (SV *self) 3669down (...)
2690 CODE: 3670 CODE:
2691 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3671 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3672
3673void
3674wait (...)
3675 CODE:
3676 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2692 3677
2693void 3678void
2694try (SV *self) 3679try (SV *self)
2695 PPCODE: 3680 PPCODE:
2696{ 3681{
… …
2708 XSRETURN_NO; 3693 XSRETURN_NO;
2709} 3694}
2710 3695
2711void 3696void
2712waiters (SV *self) 3697waiters (SV *self)
2713 CODE: 3698 PPCODE:
2714{ 3699{
2715 AV *av = (AV *)SvRV (self); 3700 AV *av = (AV *)SvRV (self);
3701 int wcount = AvFILLp (av) + 1 - 1;
2716 3702
2717 if (GIMME_V == G_SCALAR) 3703 if (GIMME_V == G_SCALAR)
2718 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3704 XPUSHs (sv_2mortal (newSViv (wcount)));
2719 else 3705 else
2720 { 3706 {
2721 int i; 3707 int i;
2722 EXTEND (SP, AvFILLp (av) + 1 - 1); 3708 EXTEND (SP, wcount);
2723 for (i = 1; i <= AvFILLp (av); ++i) 3709 for (i = 1; i <= wcount; ++i)
2724 PUSHs (newSVsv (AvARRAY (av)[i])); 3710 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2725 } 3711 }
2726} 3712}
2727 3713
3714MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3715
3716void
3717_may_delete (SV *sem, int count, int extra_refs)
3718 PPCODE:
3719{
3720 AV *av = (AV *)SvRV (sem);
3721
3722 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3723 && AvFILLp (av) == 0 /* no waiters, just count */
3724 && SvIV (AvARRAY (av)[0]) == count)
3725 XSRETURN_YES;
3726
3727 XSRETURN_NO;
3728}
3729
3730MODULE = Coro::State PACKAGE = Coro::Signal
3731
3732SV *
3733new (SV *klass)
3734 CODE:
3735 RETVAL = sv_bless (
3736 coro_waitarray_new (aTHX_ 0),
3737 GvSTASH (CvGV (cv))
3738 );
3739 OUTPUT:
3740 RETVAL
3741
3742void
3743wait (...)
3744 CODE:
3745 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3746
3747void
3748broadcast (SV *self)
3749 CODE:
3750{
3751 AV *av = (AV *)SvRV (self);
3752 coro_signal_wake (aTHX_ av, AvFILLp (av));
3753}
3754
3755void
3756send (SV *self)
3757 CODE:
3758{
3759 AV *av = (AV *)SvRV (self);
3760
3761 if (AvFILLp (av))
3762 coro_signal_wake (aTHX_ av, 1);
3763 else
3764 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3765}
3766
3767IV
3768awaited (SV *self)
3769 CODE:
3770 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3771 OUTPUT:
3772 RETVAL
3773
3774
3775MODULE = Coro::State PACKAGE = Coro::AnyEvent
3776
3777BOOT:
3778 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3779
3780void
3781_schedule (...)
3782 CODE:
3783{
3784 static int incede;
3785
3786 api_cede_notself (aTHX);
3787
3788 ++incede;
3789 while (coro_nready >= incede && api_cede (aTHX))
3790 ;
3791
3792 sv_setsv (sv_activity, &PL_sv_undef);
3793 if (coro_nready >= incede)
3794 {
3795 PUSHMARK (SP);
3796 PUTBACK;
3797 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3798 }
3799
3800 --incede;
3801}
3802
3803
3804MODULE = Coro::State PACKAGE = Coro::AIO
3805
3806void
3807_register (char *target, char *proto, SV *req)
3808 CODE:
3809{
3810 CV *req_cv = coro_sv_2cv (aTHX_ req);
3811 /* newXSproto doesn't return the CV on 5.8 */
3812 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3813 sv_setpv ((SV *)slf_cv, proto);
3814 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3815}
3816

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