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Comparing Coro/Coro/State.xs (file contents):
Revision 1.286 by root, Mon Nov 17 04:19:49 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# if CORO_PTHREAD 159# if CORO_PTHREAD
148static void *coro_thx; 160static void *coro_thx;
149# endif 161# endif
150#endif 162#endif
151 163
152/* helper storage struct for Coro::AIO */ 164#ifdef __linux
153struct io_state 165# include <time.h> /* for timespec */
154{ 166# include <syscall.h> /* for SYS_* */
155 AV *res; 167# ifdef SYS_clock_gettime
156 int errorno; 168# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
157 I32 laststype; /* U16 in 5.10.0 */ 169# define CORO_CLOCK_MONOTONIC 1
158 int laststatval; 170# define CORO_CLOCK_THREAD_CPUTIME_ID 3
159 Stat_t statcache; 171# endif
160}; 172#endif
161 173
162static 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);
163 180
164static U32 cctx_gen; 181static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 182static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 183static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 184static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 185static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 186static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 187static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 188
189static AV *av_destroy; /* destruction queue */
190static SV *sv_manager; /* the manager coro */
191static SV *sv_idle; /* $Coro::idle */
192
172static GV *irsgv; /* $/ */ 193static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 194static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 195static SV *rv_diehook;
175static SV *rv_warnhook; 196static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 197static HV *hv_sig; /* %SIG */
177 198
178/* async_pool helper stuff */ 199/* async_pool helper stuff */
179static SV *sv_pool_rss; 200static SV *sv_pool_rss;
180static SV *sv_pool_size; 201static SV *sv_pool_size;
202static SV *sv_async_pool_idle; /* description string */
181static 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;
182 207
183/* Coro::AnyEvent */ 208/* Coro::AnyEvent */
184static 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;
185 216
186static struct coro_cctx *cctx_first; 217static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 218static int cctx_count, cctx_idle;
188 219
189enum { 220enum {
215 int valgrind_id; 246 int valgrind_id;
216#endif 247#endif
217 unsigned char flags; 248 unsigned char flags;
218} coro_cctx; 249} coro_cctx;
219 250
251coro_cctx *cctx_current; /* the currently running cctx */
252
253/*****************************************************************************/
254
220enum { 255enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 256 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 257 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 258 CF_NEW = 0x0004, /* has never been switched to */
224 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 */
225}; 261};
226 262
227/* 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 */
228typedef struct 264typedef struct
229{ 265{
230 SV *defsv; 266 SV *defsv;
231 AV *defav; 267 AV *defav;
232 SV *errsv; 268 SV *errsv;
233 SV *irsgv; 269 SV *irsgv;
270 HV *hinthv;
234#define VAR(name,type) type name; 271#define VAR(name,type) type name;
235# include "state.h" 272# include "state.h"
236#undef VAR 273#undef VAR
237} perl_slots; 274} perl_slots;
238 275
241/* this is a structure representing a perl-level coroutine */ 278/* this is a structure representing a perl-level coroutine */
242struct coro { 279struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */ 280 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 281 coro_cctx *cctx;
245 282
283 /* ready queue */
284 struct coro *next_ready;
285
246 /* state data */ 286 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 287 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 288 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 289 perl_slots *slot; /* basically the saved sp */
250 290
291 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 292 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 293 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 294 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 295 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro); 296 void (*on_destroy)(pTHX_ struct coro *coro);
256 297
257 /* statistics */ 298 /* statistics */
258 int usecount; /* number of transfers to this coro */ 299 int usecount; /* number of transfers to this coro */
259 300
260 /* coro process data */ 301 /* coro process data */
261 int prio; 302 int prio;
262 SV *throw; /* exception to be thrown */ 303 SV *except; /* exception to be thrown */
304 SV *rouse_cb;
263 305
264 /* async_pool */ 306 /* async_pool */
265 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;
266 317
267 /* linked list */ 318 /* linked list */
268 struct coro *next, *prev; 319 struct coro *next, *prev;
269}; 320};
270 321
273 324
274/* the following variables are effectively part of the perl context */ 325/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */ 326/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */ 327/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */ 328static struct CoroSLF slf_frame; /* the current slf frame */
278static SV *coro_throw;
279 329
280/** Coro ********************************************************************/ 330/** Coro ********************************************************************/
281 331
282#define PRIO_MAX 3 332#define CORO_PRIO_MAX 3
283#define PRIO_HIGH 1 333#define CORO_PRIO_HIGH 1
284#define PRIO_NORMAL 0 334#define CORO_PRIO_NORMAL 0
285#define PRIO_LOW -1 335#define CORO_PRIO_LOW -1
286#define PRIO_IDLE -3 336#define CORO_PRIO_IDLE -3
287#define PRIO_MIN -4 337#define CORO_PRIO_MIN -4
288 338
289/* for Coro.pm */ 339/* for Coro.pm */
290static SV *coro_current; 340static SV *coro_current;
291static SV *coro_readyhook; 341static SV *coro_readyhook;
292static 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;
293static struct coro *coro_first; 344static struct coro *coro_first;
294#define coro_nready coroapi.nready 345#define coro_nready coroapi.nready
295 346
296/** lowlevel stuff **********************************************************/ 347/** lowlevel stuff **********************************************************/
297 348
323 get_hv (name, create); 374 get_hv (name, create);
324#endif 375#endif
325 return get_hv (name, create); 376 return get_hv (name, create);
326} 377}
327 378
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
328static AV * 491static AV *
329coro_clone_padlist (pTHX_ CV *cv) 492coro_derive_padlist (pTHX_ CV *cv)
330{ 493{
331 AV *padlist = CvPADLIST (cv); 494 AV *padlist = CvPADLIST (cv);
332 AV *newpadlist, *newpad; 495 AV *newpadlist, *newpad;
333 496
334 newpadlist = newAV (); 497 newpadlist = newAV ();
339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 502 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
340#endif 503#endif
341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 504 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
342 --AvFILLp (padlist); 505 --AvFILLp (padlist);
343 506
344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 507 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
345 av_store (newpadlist, 1, (SV *)newpad); 508 av_store (newpadlist, 1, (SV *)newpad);
346 509
347 return newpadlist; 510 return newpadlist;
348} 511}
349 512
350static void 513static void
351free_padlist (pTHX_ AV *padlist) 514free_padlist (pTHX_ AV *padlist)
352{ 515{
353 /* may be during global destruction */ 516 /* may be during global destruction */
354 if (SvREFCNT (padlist)) 517 if (!IN_DESTRUCT)
355 { 518 {
356 I32 i = AvFILLp (padlist); 519 I32 i = AvFILLp (padlist);
357 while (i >= 0) 520
521 while (i > 0) /* special-case index 0 */
358 { 522 {
359 SV **svp = av_fetch (padlist, i--, FALSE); 523 /* we try to be extra-careful here */
360 if (svp) 524 AV *av = (AV *)AvARRAY (padlist)[i--];
361 { 525 I32 j = AvFILLp (av);
362 SV *sv; 526
363 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 527 while (j >= 0)
528 SvREFCNT_dec (AvARRAY (av)[j--]);
529
530 AvFILLp (av) = -1;
364 SvREFCNT_dec (sv); 531 SvREFCNT_dec (av);
365
366 SvREFCNT_dec (*svp);
367 }
368 } 532 }
369 533
534 SvREFCNT_dec (AvARRAY (padlist)[0]);
535
536 AvFILLp (padlist) = -1;
370 SvREFCNT_dec ((SV*)padlist); 537 SvREFCNT_dec ((SV*)padlist);
371 } 538 }
372} 539}
373 540
374static int 541static int
375coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 542coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
376{ 543{
377 AV *padlist; 544 AV *padlist;
378 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;
379 550
380 /* casting is fun. */ 551 /* casting is fun. */
381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 552 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
382 free_padlist (aTHX_ padlist); 553 free_padlist (aTHX_ padlist);
383 554
384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 555 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385 556
386 return 0; 557 return 0;
387} 558}
388
389#define CORO_MAGIC_type_cv PERL_MAGIC_ext
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
391 559
392static MGVTBL coro_cv_vtbl = { 560static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0, 561 0, 0, 0, 0,
394 coro_cv_free 562 coro_cv_free
395}; 563};
396
397#define CORO_MAGIC(sv, type) \
398 expect_true (SvMAGIC (sv)) \
399 ? expect_true (SvMAGIC (sv)->mg_type == type) \
400 ? SvMAGIC (sv) \
401 : mg_find (sv, type) \
402 : 0
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* fastert than SvSTATE, but expects a coroutine hv */
434INLINE struct coro *
435SvSTATE_hv (SV *sv)
436{
437 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438 ? SvMAGIC (sv)
439 : mg_find (sv, CORO_MAGIC_type_state);
440
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
445 564
446/* the next two functions merely cache the padlists */ 565/* the next two functions merely cache the padlists */
447static void 566static void
448get_padlist (pTHX_ CV *cv) 567get_padlist (pTHX_ CV *cv)
449{ 568{
455 else 574 else
456 { 575 {
457#if CORO_PREFER_PERL_FUNCTIONS 576#if CORO_PREFER_PERL_FUNCTIONS
458 /* this is probably cleaner? but also slower! */ 577 /* this is probably cleaner? but also slower! */
459 /* in practise, it seems to be less stable */ 578 /* in practise, it seems to be less stable */
460 CV *cp = Perl_cv_clone (cv); 579 CV *cp = Perl_cv_clone (aTHX_ cv);
461 CvPADLIST (cv) = CvPADLIST (cp); 580 CvPADLIST (cv) = CvPADLIST (cp);
462 CvPADLIST (cp) = 0; 581 CvPADLIST (cp) = 0;
463 SvREFCNT_dec (cp); 582 SvREFCNT_dec (cp);
464#else 583#else
465 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 584 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
466#endif 585#endif
467 } 586 }
468} 587}
469 588
470static void 589static void
477 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);
478 597
479 av = (AV *)mg->mg_obj; 598 av = (AV *)mg->mg_obj;
480 599
481 if (expect_false (AvFILLp (av) >= AvMAX (av))) 600 if (expect_false (AvFILLp (av) >= AvMAX (av)))
482 av_extend (av, AvMAX (av) + 1); 601 av_extend (av, AvFILLp (av) + 1);
483 602
484 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 603 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
485} 604}
486 605
487/** load & save, init *******************************************************/ 606/** load & save, init *******************************************************/
607
608static void
609on_enterleave_call (pTHX_ SV *cb);
488 610
489static void 611static void
490load_perl (pTHX_ Coro__State c) 612load_perl (pTHX_ Coro__State c)
491{ 613{
492 perl_slots *slot = c->slot; 614 perl_slots *slot = c->slot;
493 c->slot = 0; 615 c->slot = 0;
494 616
495 PL_mainstack = c->mainstack; 617 PL_mainstack = c->mainstack;
496 618
497 GvSV (PL_defgv) = slot->defsv; 619 GvSV (PL_defgv) = slot->defsv;
498 GvAV (PL_defgv) = slot->defav; 620 GvAV (PL_defgv) = slot->defav;
499 GvSV (PL_errgv) = slot->errsv; 621 GvSV (PL_errgv) = slot->errsv;
500 GvSV (irsgv) = slot->irsgv; 622 GvSV (irsgv) = slot->irsgv;
623 GvHV (PL_hintgv) = slot->hinthv;
501 624
502 #define VAR(name,type) PL_ ## name = slot->name; 625 #define VAR(name,type) PL_ ## name = slot->name;
503 # include "state.h" 626 # include "state.h"
504 #undef VAR 627 #undef VAR
505 628
518 641
519 PUTBACK; 642 PUTBACK;
520 } 643 }
521 644
522 slf_frame = c->slf_frame; 645 slf_frame = c->slf_frame;
523 coro_throw = c->throw; 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 }
524} 663}
525 664
526static void 665static void
527save_perl (pTHX_ Coro__State c) 666save_perl (pTHX_ Coro__State c)
528{ 667{
529 c->throw = coro_throw; 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;
530 c->slf_frame = slf_frame; 685 c->slf_frame = slf_frame;
531 686
532 { 687 {
533 dSP; 688 dSP;
534 I32 cxix = cxstack_ix; 689 I32 cxix = cxstack_ix;
546 { 701 {
547 while (expect_true (cxix >= 0)) 702 while (expect_true (cxix >= 0))
548 { 703 {
549 PERL_CONTEXT *cx = &ccstk[cxix--]; 704 PERL_CONTEXT *cx = &ccstk[cxix--];
550 705
551 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))
552 { 707 {
553 CV *cv = cx->blk_sub.cv; 708 CV *cv = cx->blk_sub.cv;
554 709
555 if (expect_true (CvDEPTH (cv))) 710 if (expect_true (CvDEPTH (cv)))
556 { 711 {
591 c->mainstack = PL_mainstack; 746 c->mainstack = PL_mainstack;
592 747
593 { 748 {
594 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 749 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
595 750
596 slot->defav = GvAV (PL_defgv); 751 slot->defav = GvAV (PL_defgv);
597 slot->defsv = DEFSV; 752 slot->defsv = DEFSV;
598 slot->errsv = ERRSV; 753 slot->errsv = ERRSV;
599 slot->irsgv = GvSV (irsgv); 754 slot->irsgv = GvSV (irsgv);
755 slot->hinthv = GvHV (PL_hintgv);
600 756
601 #define VAR(name,type) slot->name = PL_ ## name; 757 #define VAR(name,type) slot->name = PL_ ## name;
602 # include "state.h" 758 # include "state.h"
603 #undef VAR 759 #undef VAR
604 } 760 }
609 * of perl.c:init_stacks, except that it uses less memory 765 * of perl.c:init_stacks, except that it uses less memory
610 * on the (sometimes correct) assumption that coroutines do 766 * on the (sometimes correct) assumption that coroutines do
611 * not usually need a lot of stackspace. 767 * not usually need a lot of stackspace.
612 */ 768 */
613#if CORO_PREFER_PERL_FUNCTIONS 769#if CORO_PREFER_PERL_FUNCTIONS
614# define coro_init_stacks init_stacks 770# define coro_init_stacks(thx) init_stacks ()
615#else 771#else
616static void 772static void
617coro_init_stacks (pTHX) 773coro_init_stacks (pTHX)
618{ 774{
619 PL_curstackinfo = new_stackinfo(32, 8); 775 PL_curstackinfo = new_stackinfo(32, 8);
682#if !PERL_VERSION_ATLEAST (5,10,0) 838#if !PERL_VERSION_ATLEAST (5,10,0)
683 Safefree (PL_retstack); 839 Safefree (PL_retstack);
684#endif 840#endif
685} 841}
686 842
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
687static size_t 852static size_t
688coro_rss (pTHX_ struct coro *coro) 853coro_rss (pTHX_ struct coro *coro)
689{ 854{
690 size_t rss = sizeof (*coro); 855 size_t rss = sizeof (*coro);
691 856
692 if (coro->mainstack) 857 if (coro->mainstack)
693 { 858 {
694 perl_slots tmp_slot;
695 perl_slots *slot;
696
697 if (coro->flags & CF_RUNNING) 859 if (coro->flags & CF_RUNNING)
698 { 860 {
699 slot = &tmp_slot; 861 #define SYM(sym) PL_ ## sym
700 862 CORO_RSS;
701 #define VAR(name,type) slot->name = PL_ ## name;
702 # include "state.h"
703 #undef VAR 863 #undef SYM
704 } 864 }
705 else 865 else
706 slot = coro->slot;
707
708 if (slot)
709 { 866 {
710 rss += sizeof (slot->curstackinfo); 867 #define SYM(sym) coro->slot->sym
711 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 868 CORO_RSS;
712 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 869 #undef SYM
713 rss += slot->tmps_max * sizeof (SV *);
714 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
715 rss += slot->scopestack_max * sizeof (I32);
716 rss += slot->savestack_max * sizeof (ANY);
717
718#if !PERL_VERSION_ATLEAST (5,10,0)
719 rss += slot->retstack_max * sizeof (OP *);
720#endif
721 } 870 }
722 } 871 }
723 872
724 return rss; 873 return rss;
725} 874}
738#endif 887#endif
739 888
740/* 889/*
741 * This overrides the default magic get method of %SIG elements. 890 * This overrides the default magic get method of %SIG elements.
742 * 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
743 * 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
744 * readback here. 893 * readback here.
745 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
746 * not expecting this to actually change the hook. This is a potential problem
747 * when a schedule happens then, but we ignore this.
748 */ 894 */
749static int 895static int
750coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 896coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
751{ 897{
752 const char *s = MgPV_nolen_const (mg); 898 const char *s = MgPV_nolen_const (mg);
805 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 951 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
806 952
807 if (svp) 953 if (svp)
808 { 954 {
809 SV *old = *svp; 955 SV *old = *svp;
810 *svp = newSVsv (sv); 956 *svp = SvOK (sv) ? newSVsv (sv) : 0;
811 SvREFCNT_dec (old); 957 SvREFCNT_dec (old);
812 return 0; 958 return 0;
813 } 959 }
814 } 960 }
815 961
826static int 972static int
827slf_check_nop (pTHX_ struct CoroSLF *frame) 973slf_check_nop (pTHX_ struct CoroSLF *frame)
828{ 974{
829 return 0; 975 return 0;
830} 976}
977
978static int
979slf_check_repeat (pTHX_ struct CoroSLF *frame)
980{
981 return 1;
982}
983
984static UNOP coro_setup_op;
831 985
832static void NOINLINE /* noinline to keep it out of the transfer fast path */ 986static void NOINLINE /* noinline to keep it out of the transfer fast path */
833coro_setup (pTHX_ struct coro *coro) 987coro_setup (pTHX_ struct coro *coro)
834{ 988{
835 /* 989 /*
839 993
840 PL_runops = RUNOPS_DEFAULT; 994 PL_runops = RUNOPS_DEFAULT;
841 PL_curcop = &PL_compiling; 995 PL_curcop = &PL_compiling;
842 PL_in_eval = EVAL_NULL; 996 PL_in_eval = EVAL_NULL;
843 PL_comppad = 0; 997 PL_comppad = 0;
998 PL_comppad_name = 0;
999 PL_comppad_name_fill = 0;
1000 PL_comppad_name_floor = 0;
844 PL_curpm = 0; 1001 PL_curpm = 0;
845 PL_curpad = 0; 1002 PL_curpad = 0;
846 PL_localizing = 0; 1003 PL_localizing = 0;
847 PL_dirty = 0; 1004 PL_dirty = 0;
848 PL_restartop = 0; 1005 PL_restartop = 0;
849#if PERL_VERSION_ATLEAST (5,10,0) 1006#if PERL_VERSION_ATLEAST (5,10,0)
850 PL_parser = 0; 1007 PL_parser = 0;
851#endif 1008#endif
1009 PL_hints = 0;
852 1010
853 /* recreate the die/warn hooks */ 1011 /* recreate the die/warn hooks */
854 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 );
855 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);
856 1014
857 GvSV (PL_defgv) = newSV (0); 1015 GvSV (PL_defgv) = newSV (0);
858 GvAV (PL_defgv) = coro->args; coro->args = 0; 1016 GvAV (PL_defgv) = coro->args; coro->args = 0;
859 GvSV (PL_errgv) = newSV (0); 1017 GvSV (PL_errgv) = newSV (0);
860 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;
861 PL_rs = newSVsv (GvSV (irsgv)); 1020 PL_rs = newSVsv (GvSV (irsgv));
862 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1021 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
863 1022
864 { 1023 {
865 dSP; 1024 dSP;
866 UNOP myop; 1025 UNOP myop;
867 1026
868 Zero (&myop, 1, UNOP); 1027 Zero (&myop, 1, UNOP);
869 myop.op_next = Nullop; 1028 myop.op_next = Nullop;
1029 myop.op_type = OP_ENTERSUB;
870 myop.op_flags = OPf_WANT_VOID; 1030 myop.op_flags = OPf_WANT_VOID;
871 1031
872 PUSHMARK (SP); 1032 PUSHMARK (SP);
873 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1033 PUSHs ((SV *)coro->startcv);
874 PUTBACK; 1034 PUTBACK;
875 PL_op = (OP *)&myop; 1035 PL_op = (OP *)&myop;
876 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1036 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
877 SPAGAIN;
878 } 1037 }
879 1038
880 /* 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
881 * 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.
882 */ 1041 */
883 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 */
884 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 */
885 1044
886 coro_throw = coro->throw; 1045 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
887} 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 */
888 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
889static void 1063static void
890coro_destruct (pTHX_ struct coro *coro) 1064coro_unwind_stacks (pTHX)
891{ 1065{
892 if (!IN_DESTRUCT) 1066 if (!IN_DESTRUCT)
893 { 1067 {
894 /* restore all saved variables and stuff */ 1068 /* restore all saved variables and stuff */
895 LEAVE_SCOPE (0); 1069 LEAVE_SCOPE (0);
903 POPSTACK_TO (PL_mainstack); 1077 POPSTACK_TO (PL_mainstack);
904 1078
905 /* unwind main stack */ 1079 /* unwind main stack */
906 dounwind (-1); 1080 dounwind (-1);
907 } 1081 }
1082}
908 1083
909 SvREFCNT_dec (GvSV (PL_defgv)); 1084static void
910 SvREFCNT_dec (GvAV (PL_defgv)); 1085coro_destruct_perl (pTHX_ struct coro *coro)
911 SvREFCNT_dec (GvSV (PL_errgv)); 1086{
912 SvREFCNT_dec (PL_defoutgv); 1087 SV *svf [9];
913 SvREFCNT_dec (PL_rs);
914 SvREFCNT_dec (GvSV (irsgv));
915 1088
916 SvREFCNT_dec (PL_diehook);
917 SvREFCNT_dec (PL_warnhook);
918 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
919 SvREFCNT_dec (coro->saved_deffh); 1121 SvREFCNT_dec (coro->saved_deffh);
920 SvREFCNT_dec (coro_throw); 1122 SvREFCNT_dec (coro->rouse_cb);
921 1123 SvREFCNT_dec (coro->invoke_cb);
922 coro_destruct_stacks (aTHX); 1124 SvREFCNT_dec (coro->invoke_av);
1125 }
923} 1126}
924 1127
925INLINE void 1128INLINE void
926free_coro_mortal (pTHX) 1129free_coro_mortal (pTHX)
927{ 1130{
935static int 1138static int
936runops_trace (pTHX) 1139runops_trace (pTHX)
937{ 1140{
938 COP *oldcop = 0; 1141 COP *oldcop = 0;
939 int oldcxix = -2; 1142 int oldcxix = -2;
940 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
941 coro_cctx *cctx = coro->cctx;
942 1143
943 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1144 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
944 { 1145 {
945 PERL_ASYNC_CHECK (); 1146 PERL_ASYNC_CHECK ();
946 1147
947 if (cctx->flags & CC_TRACE_ALL) 1148 if (cctx_current->flags & CC_TRACE_ALL)
948 { 1149 {
949 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)
950 { 1151 {
951 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1152 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
952 SV **bot, **top; 1153 SV **bot, **top;
953 AV *av = newAV (); /* return values */ 1154 AV *av = newAV (); /* return values */
954 SV **cb; 1155 SV **cb;
991 1192
992 if (PL_curcop != &PL_compiling) 1193 if (PL_curcop != &PL_compiling)
993 { 1194 {
994 SV **cb; 1195 SV **cb;
995 1196
996 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1197 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
997 { 1198 {
998 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1199 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
999 1200
1000 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1201 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1001 { 1202 {
1002 runops_proc_t old_runops = PL_runops;
1003 dSP; 1203 dSP;
1004 GV *gv = CvGV (cx->blk_sub.cv); 1204 GV *gv = CvGV (cx->blk_sub.cv);
1005 SV *fullname = sv_2mortal (newSV (0)); 1205 SV *fullname = sv_2mortal (newSV (0));
1006 1206
1007 if (isGV (gv)) 1207 if (isGV (gv))
1012 SAVETMPS; 1212 SAVETMPS;
1013 EXTEND (SP, 3); 1213 EXTEND (SP, 3);
1014 PUSHMARK (SP); 1214 PUSHMARK (SP);
1015 PUSHs (&PL_sv_yes); 1215 PUSHs (&PL_sv_yes);
1016 PUSHs (fullname); 1216 PUSHs (fullname);
1017 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);
1018 PUTBACK; 1218 PUTBACK;
1019 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);
1020 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);
1021 SPAGAIN; 1221 SPAGAIN;
1022 FREETMPS; 1222 FREETMPS;
1025 } 1225 }
1026 1226
1027 oldcxix = cxstack_ix; 1227 oldcxix = cxstack_ix;
1028 } 1228 }
1029 1229
1030 if (cctx->flags & CC_TRACE_LINE) 1230 if (cctx_current->flags & CC_TRACE_LINE)
1031 { 1231 {
1032 dSP; 1232 dSP;
1033 1233
1034 PL_runops = RUNOPS_DEFAULT; 1234 PL_runops = RUNOPS_DEFAULT;
1035 ENTER; 1235 ENTER;
1054 1254
1055 TAINT_NOT; 1255 TAINT_NOT;
1056 return 0; 1256 return 0;
1057} 1257}
1058 1258
1259static struct CoroSLF cctx_ssl_frame;
1260
1059static void 1261static void
1060prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1262slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1061{ 1263{
1062 ta->prev = (struct coro *)cctx;
1063 ta->next = 0; 1264 ta->prev = 0;
1064} 1265}
1065 1266
1066/* inject a fake call to Coro::State::_cctx_init into the execution */ 1267static int
1067/* _cctx_init should be careful, as it could be called at almost any time */ 1268slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1068/* during execution of a perl program */ 1269{
1069/* 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 */
1070static void NOINLINE 1276static void NOINLINE
1071cctx_prepare (pTHX_ coro_cctx *cctx) 1277cctx_prepare (pTHX)
1072{ 1278{
1073 dSP;
1074 UNOP myop;
1075
1076 PL_top_env = &PL_start_env; 1279 PL_top_env = &PL_start_env;
1077 1280
1078 if (cctx->flags & CC_TRACE) 1281 if (cctx_current->flags & CC_TRACE)
1079 PL_runops = runops_trace; 1282 PL_runops = runops_trace;
1080 1283
1081 Zero (&myop, 1, UNOP); 1284 /* we already must be executing an SLF op, there is no other valid way
1082 myop.op_next = PL_op; 1285 * that can lead to creation of a new cctx */
1083 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));
1084 1288
1085 PUSHMARK (SP); 1289 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1086 EXTEND (SP, 2); 1290 cctx_ssl_frame = slf_frame;
1087 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1291
1088 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1292 slf_frame.prepare = slf_prepare_set_stacklevel;
1089 PUTBACK; 1293 slf_frame.check = slf_check_set_stacklevel;
1090 PL_op = (OP *)&myop;
1091 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1092 SPAGAIN;
1093} 1294}
1094 1295
1095/* 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 */
1096INLINE void 1297INLINE void
1097transfer_tail (pTHX) 1298transfer_tail (pTHX)
1116 /* normally we would need to skip the entersub here */ 1317 /* normally we would need to skip the entersub here */
1117 /* 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 */
1118 /* PL_nop = PL_nop->op_next */ 1319 /* PL_nop = PL_nop->op_next */
1119 1320
1120 /* inject a fake subroutine call to cctx_init */ 1321 /* inject a fake subroutine call to cctx_init */
1121 cctx_prepare (aTHX_ (coro_cctx *)arg); 1322 cctx_prepare (aTHX);
1122 1323
1123 /* cctx_run is the alternative tail of transfer() */ 1324 /* cctx_run is the alternative tail of transfer() */
1124 transfer_tail (aTHX); 1325 transfer_tail (aTHX);
1125 1326
1126 /* 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 */
1127 PL_restartop = PL_op; 1328 PL_restartop = PL_op;
1128 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 */
1129 1334
1130 /* 1335 /*
1131 * 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
1132 * 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)
1133 * 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
1134 * bootstrap-time "top" top_env, as we cannot restore the "main" 1339 * bootstrap-time "top" top_env, as we cannot restore the "main"
1135 * 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.
1136 */ 1343 */
1137 PL_top_env = main_top_env; 1344 PL_top_env = main_top_env;
1138 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 */
1139 } 1346 }
1140} 1347}
1217cctx_destroy (coro_cctx *cctx) 1424cctx_destroy (coro_cctx *cctx)
1218{ 1425{
1219 if (!cctx) 1426 if (!cctx)
1220 return; 1427 return;
1221 1428
1429 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1430
1222 --cctx_count; 1431 --cctx_count;
1223 coro_destroy (&cctx->cctx); 1432 coro_destroy (&cctx->cctx);
1224 1433
1225 /* coro_transfer creates new, empty cctx's */ 1434 /* coro_transfer creates new, empty cctx's */
1226 if (cctx->sptr) 1435 if (cctx->sptr)
1289 /* TODO: throwing up here is considered harmful */ 1498 /* TODO: throwing up here is considered harmful */
1290 1499
1291 if (expect_true (prev != next)) 1500 if (expect_true (prev != next))
1292 { 1501 {
1293 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1502 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1294 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,");
1295 1504
1296 if (expect_false (next->flags & CF_RUNNING))
1297 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1298
1299 if (expect_false (next->flags & CF_DESTROYED)) 1505 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1300 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,");
1301 1507
1302#if !PERL_VERSION_ATLEAST (5,10,0) 1508#if !PERL_VERSION_ATLEAST (5,10,0)
1303 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1509 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1304 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,");
1305#endif 1511#endif
1311transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1517transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1312{ 1518{
1313 dSTACKLEVEL; 1519 dSTACKLEVEL;
1314 1520
1315 /* sometimes transfer is only called to set idle_sp */ 1521 /* sometimes transfer is only called to set idle_sp */
1316 if (expect_false (!next)) 1522 if (expect_false (!prev))
1317 { 1523 {
1318 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1524 cctx_current->idle_sp = STACKLEVEL;
1319 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 */
1320 } 1526 }
1321 else if (expect_true (prev != next)) 1527 else if (expect_true (prev != next))
1322 { 1528 {
1323 coro_cctx *prev__cctx; 1529 coro_cctx *cctx_prev;
1324 1530
1325 if (expect_false (prev->flags & CF_NEW)) 1531 if (expect_false (prev->flags & CF_NEW))
1326 { 1532 {
1327 /* create a new empty/source context */ 1533 /* create a new empty/source context */
1328 prev->cctx = cctx_new_empty ();
1329 prev->flags &= ~CF_NEW; 1534 prev->flags &= ~CF_NEW;
1330 prev->flags |= CF_RUNNING; 1535 prev->flags |= CF_RUNNING;
1331 } 1536 }
1332 1537
1333 prev->flags &= ~CF_RUNNING; 1538 prev->flags &= ~CF_RUNNING;
1344 coro_setup (aTHX_ next); 1549 coro_setup (aTHX_ next);
1345 } 1550 }
1346 else 1551 else
1347 load_perl (aTHX_ next); 1552 load_perl (aTHX_ next);
1348 1553
1349 prev__cctx = prev->cctx;
1350
1351 /* possibly untie and reuse the cctx */ 1554 /* possibly untie and reuse the cctx */
1352 if (expect_true ( 1555 if (expect_true (
1353 prev__cctx->idle_sp == (void *)stacklevel 1556 cctx_current->idle_sp == STACKLEVEL
1354 && !(prev__cctx->flags & CC_TRACE) 1557 && !(cctx_current->flags & CC_TRACE)
1355 && !force_cctx 1558 && !force_cctx
1356 )) 1559 ))
1357 { 1560 {
1358 /* 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 */
1359 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));
1360 1563
1361 prev->cctx = 0;
1362
1363 /* 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. */
1364 /* 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 */
1365 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1566 if (expect_false (CCTX_EXPIRED (cctx_current)))
1366 if (!next->cctx) 1567 if (expect_true (!next->cctx))
1367 next->cctx = cctx_get (aTHX); 1568 next->cctx = cctx_get (aTHX);
1368 1569
1369 cctx_put (prev__cctx); 1570 cctx_put (cctx_current);
1370 } 1571 }
1572 else
1573 prev->cctx = cctx_current;
1371 1574
1372 ++next->usecount; 1575 ++next->usecount;
1373 1576
1374 if (expect_true (!next->cctx)) 1577 cctx_prev = cctx_current;
1375 next->cctx = cctx_get (aTHX); 1578 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1376 1579
1377 if (expect_false (prev__cctx != next->cctx)) 1580 next->cctx = 0;
1581
1582 if (expect_false (cctx_prev != cctx_current))
1378 { 1583 {
1379 prev__cctx->top_env = PL_top_env; 1584 cctx_prev->top_env = PL_top_env;
1380 PL_top_env = next->cctx->top_env; 1585 PL_top_env = cctx_current->top_env;
1381 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1586 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1382 } 1587 }
1383 1588
1384 transfer_tail (aTHX); 1589 transfer_tail (aTHX);
1385 } 1590 }
1386} 1591}
1394coro_state_destroy (pTHX_ struct coro *coro) 1599coro_state_destroy (pTHX_ struct coro *coro)
1395{ 1600{
1396 if (coro->flags & CF_DESTROYED) 1601 if (coro->flags & CF_DESTROYED)
1397 return 0; 1602 return 0;
1398 1603
1399 if (coro->on_destroy) 1604 if (coro->on_destroy && !PL_dirty)
1400 coro->on_destroy (aTHX_ coro); 1605 coro->on_destroy (aTHX_ coro);
1401 1606
1402 coro->flags |= CF_DESTROYED; 1607 coro->flags |= CF_DESTROYED;
1403 1608
1404 if (coro->flags & CF_READY) 1609 if (coro->flags & CF_READY)
1408 --coro_nready; 1613 --coro_nready;
1409 } 1614 }
1410 else 1615 else
1411 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 */
1412 1617
1413 if (coro->mainstack && coro->mainstack != main_mainstack) 1618 if (coro->mainstack
1414 { 1619 && coro->mainstack != main_mainstack
1415 struct coro temp; 1620 && coro->slot
1416 1621 && !PL_dirty)
1417 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1418
1419 save_perl (aTHX_ &temp);
1420 load_perl (aTHX_ coro);
1421
1422 coro_destruct (aTHX_ coro); 1622 coro_destruct_perl (aTHX_ coro);
1423
1424 load_perl (aTHX_ &temp);
1425
1426 coro->slot = 0;
1427 }
1428 1623
1429 cctx_destroy (coro->cctx); 1624 cctx_destroy (coro->cctx);
1625 SvREFCNT_dec (coro->startcv);
1430 SvREFCNT_dec (coro->args); 1626 SvREFCNT_dec (coro->args);
1627 SvREFCNT_dec (CORO_THROW);
1431 1628
1432 if (coro->next) coro->next->prev = coro->prev; 1629 if (coro->next) coro->next->prev = coro->prev;
1433 if (coro->prev) coro->prev->next = coro->next; 1630 if (coro->prev) coro->prev->next = coro->next;
1434 if (coro == coro_first) coro_first = coro->next; 1631 if (coro == coro_first) coro_first = coro->next;
1435 1632
1489 1686
1490 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1687 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1491 TRANSFER (ta, 1); 1688 TRANSFER (ta, 1);
1492} 1689}
1493 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
1494/** Coro ********************************************************************/ 1714/** Coro ********************************************************************/
1495 1715
1496INLINE void 1716INLINE void
1497coro_enq (pTHX_ struct coro *coro) 1717coro_enq (pTHX_ struct coro *coro)
1498{ 1718{
1499 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1719 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1500}
1501 1720
1502INLINE 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 *
1503coro_deq (pTHX) 1729coro_deq (pTHX)
1504{ 1730{
1505 int prio; 1731 int prio;
1506 1732
1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1733 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1508 if (AvFILLp (coro_ready [prio]) >= 0) 1734 {
1509 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 }
1510 1744
1511 return 0; 1745 return 0;
1512} 1746}
1513 1747
1514static int 1748static int
1516{ 1750{
1517 struct coro *coro; 1751 struct coro *coro;
1518 SV *sv_hook; 1752 SV *sv_hook;
1519 void (*xs_hook)(void); 1753 void (*xs_hook)(void);
1520 1754
1521 if (SvROK (coro_sv))
1522 coro_sv = SvRV (coro_sv);
1523
1524 coro = SvSTATE (coro_sv); 1755 coro = SvSTATE (coro_sv);
1525 1756
1526 if (coro->flags & CF_READY) 1757 if (coro->flags & CF_READY)
1527 return 0; 1758 return 0;
1528 1759
1541 ENTER; 1772 ENTER;
1542 SAVETMPS; 1773 SAVETMPS;
1543 1774
1544 PUSHMARK (SP); 1775 PUSHMARK (SP);
1545 PUTBACK; 1776 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD); 1777 call_sv (sv_hook, G_VOID | G_DISCARD);
1547 SPAGAIN;
1548 1778
1549 FREETMPS; 1779 FREETMPS;
1550 LEAVE; 1780 LEAVE;
1551 } 1781 }
1552 1782
1560api_is_ready (pTHX_ SV *coro_sv) 1790api_is_ready (pTHX_ SV *coro_sv)
1561{ 1791{
1562 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1792 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1563} 1793}
1564 1794
1795/* expects to own a reference to next->hv */
1565INLINE void 1796INLINE void
1566prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1797prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1567{ 1798{
1568 SV *prev_sv, *next_sv;
1569
1570 for (;;)
1571 {
1572 next_sv = coro_deq (aTHX);
1573
1574 /* nothing to schedule: call the idle handler */
1575 if (expect_false (!next_sv))
1576 {
1577 dSP;
1578
1579 ENTER;
1580 SAVETMPS;
1581
1582 PUSHMARK (SP);
1583 PUTBACK;
1584 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1585 SPAGAIN;
1586
1587 FREETMPS;
1588 LEAVE;
1589 continue;
1590 }
1591
1592 ta->next = SvSTATE_hv (next_sv);
1593
1594 /* cannot transfer to destroyed coros, skip and look for next */
1595 if (expect_false (ta->next->flags & CF_DESTROYED))
1596 {
1597 SvREFCNT_dec (next_sv);
1598 /* coro_nready has already been taken care of by destroy */
1599 continue;
1600 }
1601
1602 --coro_nready;
1603 break;
1604 }
1605
1606 /* free this only after the transfer */
1607 prev_sv = SvRV (coro_current); 1799 SV *prev_sv = SvRV (coro_current);
1800
1608 ta->prev = SvSTATE_hv (prev_sv); 1801 ta->prev = SvSTATE_hv (prev_sv);
1802 ta->next = next;
1803
1609 TRANSFER_CHECK (*ta); 1804 TRANSFER_CHECK (*ta);
1610 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1805
1611 ta->next->flags &= ~CF_READY;
1612 SvRV_set (coro_current, next_sv); 1806 SvRV_set (coro_current, (SV *)next->hv);
1613 1807
1614 free_coro_mortal (aTHX); 1808 free_coro_mortal (aTHX);
1615 coro_mortal = prev_sv; 1809 coro_mortal = prev_sv;
1616} 1810}
1617 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 }
1859}
1860
1618INLINE void 1861INLINE void
1619prepare_cede (pTHX_ struct coro_transfer_args *ta) 1862prepare_cede (pTHX_ struct coro_transfer_args *ta)
1620{ 1863{
1621 api_ready (aTHX_ coro_current); 1864 api_ready (aTHX_ coro_current);
1622 prepare_schedule (aTHX_ ta); 1865 prepare_schedule (aTHX_ ta);
1641{ 1884{
1642 struct coro_transfer_args ta; 1885 struct coro_transfer_args ta;
1643 1886
1644 prepare_schedule (aTHX_ &ta); 1887 prepare_schedule (aTHX_ &ta);
1645 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);
1646} 1899}
1647 1900
1648static int 1901static int
1649api_cede (pTHX) 1902api_cede (pTHX)
1650{ 1903{
1679static void 1932static void
1680api_trace (pTHX_ SV *coro_sv, int flags) 1933api_trace (pTHX_ SV *coro_sv, int flags)
1681{ 1934{
1682 struct coro *coro = SvSTATE (coro_sv); 1935 struct coro *coro = SvSTATE (coro_sv);
1683 1936
1937 if (coro->flags & CF_RUNNING)
1938 croak ("cannot enable tracing on a running coroutine, caught");
1939
1684 if (flags & CC_TRACE) 1940 if (flags & CC_TRACE)
1685 { 1941 {
1686 if (!coro->cctx) 1942 if (!coro->cctx)
1687 coro->cctx = cctx_new_run (); 1943 coro->cctx = cctx_new_run ();
1688 else if (!(coro->cctx->flags & CC_TRACE)) 1944 else if (!(coro->cctx->flags & CC_TRACE))
1689 croak ("cannot enable tracing on coroutine with custom stack,"); 1945 croak ("cannot enable tracing on coroutine with custom stack, caught");
1690 1946
1691 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1947 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1692 } 1948 }
1693 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1949 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1694 { 1950 {
1697 if (coro->flags & CF_RUNNING) 1953 if (coro->flags & CF_RUNNING)
1698 PL_runops = RUNOPS_DEFAULT; 1954 PL_runops = RUNOPS_DEFAULT;
1699 else 1955 else
1700 coro->slot->runops = RUNOPS_DEFAULT; 1956 coro->slot->runops = RUNOPS_DEFAULT;
1701 } 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));
1702} 2491}
1703 2492
1704/*****************************************************************************/ 2493/*****************************************************************************/
1705/* PerlIO::cede */ 2494/* PerlIO::cede */
1706 2495
1775 PerlIOBuf_get_cnt, 2564 PerlIOBuf_get_cnt,
1776 PerlIOBuf_set_ptrcnt, 2565 PerlIOBuf_set_ptrcnt,
1777}; 2566};
1778 2567
1779/*****************************************************************************/ 2568/*****************************************************************************/
2569/* Coro::Semaphore & Coro::Signal */
1780 2570
1781static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782static const CV *slf_cv;
1783static SV **slf_argv;
1784static int slf_argc, slf_arga; /* count, allocated */
1785static I32 slf_ax; /* top of stack, for restore */
1786
1787/* this restores the stack in the case we patched the entersub, to */
1788/* recreate the stack frame as perl will on following calls */
1789/* since entersub cleared the stack */
1790static OP * 2571static SV *
1791pp_restore (pTHX) 2572coro_waitarray_new (pTHX_ int count)
1792{ 2573{
1793 int i; 2574 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
1794 SV **SP = PL_stack_base + slf_ax; 2575 AV *av = newAV ();
2576 SV **ary;
1795 2577
1796 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);
1797 2591
1798 EXTEND (SP, slf_argc + 1); 2592 return newRV_noinc ((SV *)av);
1799
1800 for (i = 0; i < slf_argc; ++i)
1801 PUSHs (sv_2mortal (slf_argv [i]));
1802
1803 PUSHs ((SV *)CvGV (slf_cv));
1804
1805 RETURNOP (slf_restore.op_first);
1806} 2593}
1807 2594
1808static void 2595/* semaphore */
1809slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810{
1811 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812}
1813
1814static void
1815slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816{
1817 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819 frame->prepare = slf_prepare_set_stacklevel;
1820 frame->check = slf_check_nop;
1821 frame->data = (void *)SvIV (arg [0]);
1822}
1823
1824static void
1825slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826{
1827 SV **arg = (SV **)slf_frame.data;
1828
1829 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929 /* return value handling - mostly like entersub */
1930 {
1931 dSP;
1932 SV **bot = PL_stack_base + checkmark;
1933 int gimme = GIMME_V;
1934
1935 /* make sure we put something on the stack in scalar context */
1936 if (gimme == G_SCALAR)
1937 {
1938 if (sp == bot)
1939 XPUSHs (&PL_sv_undef);
1940
1941 SP = bot + 1;
1942 }
1943
1944 PUTBACK;
1945 }
1946
1947 /* exception handling */
1948 if (expect_false (coro_throw))
1949 {
1950 SV *exception = sv_2mortal (coro_throw);
1951
1952 coro_throw = 0;
1953 sv_setsv (ERRSV, exception);
1954 croak (0);
1955 }
1956
1957 return NORMAL;
1958}
1959
1960static void
1961api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962{
1963 int i;
1964 SV **arg = PL_stack_base + ax;
1965 int items = PL_stack_sp - arg + 1;
1966
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 CvFLAGS (cv) |= CVf_SLF;
1974 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975 slf_cv = cv;
1976
1977 /* we patch the op, and then re-run the whole call */
1978 /* we have to put the same argument on the stack for this to work */
1979 /* and this will be done by pp_restore */
1980 slf_restore.op_next = (OP *)&slf_restore;
1981 slf_restore.op_type = OP_CUSTOM;
1982 slf_restore.op_ppaddr = pp_restore;
1983 slf_restore.op_first = PL_op;
1984
1985 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987 if (PL_op->op_flags & OPf_STACKED)
1988 {
1989 if (items > slf_arga)
1990 {
1991 slf_arga = items;
1992 free (slf_argv);
1993 slf_argv = malloc (slf_arga * sizeof (SV *));
1994 }
1995
1996 slf_argc = items;
1997
1998 for (i = 0; i < items; ++i)
1999 slf_argv [i] = SvREFCNT_inc (arg [i]);
2000 }
2001 else
2002 slf_argc = 0;
2003
2004 PL_op->op_ppaddr = pp_slf;
2005 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2006
2007 PL_op = (OP *)&slf_restore;
2008}
2009
2010/*****************************************************************************/
2011 2596
2012static void 2597static void
2013coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2598coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2014{ 2599{
2015 SV *count_sv = AvARRAY (av)[0]; 2600 SV *count_sv = AvARRAY (av)[0];
2027 AvARRAY (av)[0] = AvARRAY (av)[1]; 2612 AvARRAY (av)[0] = AvARRAY (av)[1];
2028 AvARRAY (av)[1] = count_sv; 2613 AvARRAY (av)[1] = count_sv;
2029 cb = av_shift (av); 2614 cb = av_shift (av);
2030 2615
2031 if (SvOBJECT (cb)) 2616 if (SvOBJECT (cb))
2617 {
2032 api_ready (aTHX_ cb); 2618 api_ready (aTHX_ cb);
2033 else 2619 --count;
2034 croak ("callbacks not yet supported"); 2620 }
2621 else if (SvTYPE (cb) == SVt_PVCV)
2622 {
2623 dSP;
2624 PUSHMARK (SP);
2625 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2626 PUTBACK;
2627 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2628 }
2035 2629
2036 SvREFCNT_dec (cb); 2630 SvREFCNT_dec (cb);
2037
2038 --count;
2039 } 2631 }
2040} 2632}
2041 2633
2042static void 2634static void
2043coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2635coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2045 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2637 /* call $sem->adjust (0) to possibly wake up some other waiters */
2046 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2638 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2047} 2639}
2048 2640
2049static int 2641static int
2050slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2642slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2051{ 2643{
2052 AV *av = (AV *)frame->data; 2644 AV *av = (AV *)frame->data;
2053 SV *count_sv = AvARRAY (av)[0]; 2645 SV *count_sv = AvARRAY (av)[0];
2054 2646
2647 /* if we are about to throw, don't actually acquire the lock, just throw */
2648 if (CORO_THROW)
2649 return 0;
2055 if (SvIVX (count_sv) > 0) 2650 else if (SvIVX (count_sv) > 0)
2056 { 2651 {
2057 SvSTATE_current->on_destroy = 0; 2652 SvSTATE_current->on_destroy = 0;
2653
2654 if (acquire)
2058 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
2059 return 0; 2659 return 0;
2060 } 2660 }
2061 else 2661 else
2062 { 2662 {
2063 int i; 2663 int i;
2072 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2672 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2073 return 1; 2673 return 1;
2074 } 2674 }
2075} 2675}
2076 2676
2077static 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
2078slf_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)
2079{ 2691{
2080 AV *av = (AV *)SvRV (arg [0]); 2692 AV *av = (AV *)SvRV (arg [0]);
2081 2693
2082 if (SvIVX (AvARRAY (av)[0]) > 0) 2694 if (SvIVX (AvARRAY (av)[0]) > 0)
2083 { 2695 {
2084 frame->data = (void *)av; 2696 frame->data = (void *)av;
2085 frame->prepare = prepare_nop; 2697 frame->prepare = prepare_nop;
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2087 } 2698 }
2088 else 2699 else
2089 { 2700 {
2090 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2701 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2091 2702
2092 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2703 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2093 frame->prepare = prepare_schedule; 2704 frame->prepare = prepare_schedule;
2094 2705
2095 /* to avoid race conditions when a woken-up coro gets terminated */ 2706 /* to avoid race conditions when a woken-up coro gets terminated */
2096 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2707 /* we arrange for a temporary on_destroy that calls adjust (0) */
2097 assert (!SvSTATE_current->on_destroy);//D
2098 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2708 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2099 } 2709 }
2710}
2100 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);
2101 frame->check = slf_check_semaphore_down; 2716 frame->check = slf_check_semaphore_down;
2717}
2102 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 }
2103} 2821}
2104 2822
2105/*****************************************************************************/ 2823/*****************************************************************************/
2824/* Coro::AIO */
2106 2825
2107#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2826#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2108 2827
2109/* create a closure from XS, returns a code reference */ 2828/* helper storage struct */
2110/* the arg can be accessed via GENSUB_ARG from the callback */ 2829struct io_state
2111/* the callback must use dXSARGS/XSRETURN */
2112static SV *
2113gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2114{ 2830{
2115 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};
2116 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
2117 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);
2118 2850
2119 CvANON_on (cv); 2851 {
2120 CvISXSUB_on (cv); 2852 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2121 CvXSUB (cv) = xsub;
2122 GENSUB_ARG = arg;
2123 2853
2124 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;
2125} 2986}
2126 2987
2127/*****************************************************************************/ 2988/*****************************************************************************/
2989
2990#if CORO_CLONE
2991# include "clone.c"
2992#endif
2128 2993
2129MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2994MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2130 2995
2131PROTOTYPES: DISABLE 2996PROTOTYPES: DISABLE
2132 2997
2137 coro_thx = PERL_GET_CONTEXT; 3002 coro_thx = PERL_GET_CONTEXT;
2138# endif 3003# endif
2139#endif 3004#endif
2140 BOOT_PAGESIZE; 3005 BOOT_PAGESIZE;
2141 3006
3007 cctx_current = cctx_new_empty ();
3008
2142 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3009 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2143 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3010 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2144 3011
2145 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;
2146 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3013 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2165 3032
2166 { 3033 {
2167 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3034 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2168 3035
2169 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3036 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2170 hv_store_ent (PL_custom_op_names, slf, 3037 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2171 newSVpv ("coro_slf", 0), 0);
2172 3038
2173 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3039 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2174 hv_store_ent (PL_custom_op_descs, slf, 3040 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2175 newSVpv ("coro schedule like function", 0), 0);
2176 } 3041 }
2177 3042
2178 coroapi.ver = CORO_API_VERSION; 3043 coroapi.ver = CORO_API_VERSION;
2179 coroapi.rev = CORO_API_REVISION; 3044 coroapi.rev = CORO_API_REVISION;
2180 3045
2192 3057
2193 if (!svp) croak ("Time::HiRes is required"); 3058 if (!svp) croak ("Time::HiRes is required");
2194 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3059 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2195 3060
2196 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));
2197 } 3065 }
2198 3066
2199 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3067 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2200} 3068}
2201 3069
2202SV * 3070SV *
2203new (char *klass, ...) 3071new (char *klass, ...)
3072 ALIAS:
3073 Coro::new = 1
2204 CODE: 3074 CODE:
2205{ 3075{
2206 struct coro *coro; 3076 struct coro *coro;
2207 MAGIC *mg; 3077 MAGIC *mg;
2208 HV *hv; 3078 HV *hv;
3079 CV *cb;
2209 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 }
2210 3095
2211 Newz (0, coro, 1, struct coro); 3096 Newz (0, coro, 1, struct coro);
2212 coro->args = newAV (); 3097 coro->args = newAV ();
2213 coro->flags = CF_NEW; 3098 coro->flags = CF_NEW;
2214 3099
2219 coro->hv = hv = newHV (); 3104 coro->hv = hv = newHV ();
2220 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);
2221 mg->mg_flags |= MGf_DUP; 3106 mg->mg_flags |= MGf_DUP;
2222 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3107 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2223 3108
3109 if (items > 1)
3110 {
2224 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
2225 for (i = 1; i < items; i++) 3121 for (i = 2; i < items; i++)
2226 av_push (coro->args, newSVsv (ST (i))); 3122 av_push (coro->args, newSVsv (ST (i)));
3123 }
2227} 3124}
2228 OUTPUT: 3125 OUTPUT:
2229 RETVAL 3126 RETVAL
2230
2231void
2232_set_stacklevel (...)
2233 CODE:
2234 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2235 3127
2236void 3128void
2237transfer (...) 3129transfer (...)
2238 PROTOTYPE: $$ 3130 PROTOTYPE: $$
2239 CODE: 3131 CODE:
2249void 3141void
2250_exit (int code) 3142_exit (int code)
2251 PROTOTYPE: $ 3143 PROTOTYPE: $
2252 CODE: 3144 CODE:
2253 _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
2254 3165
2255int 3166int
2256cctx_stacksize (int new_stacksize = 0) 3167cctx_stacksize (int new_stacksize = 0)
2257 PROTOTYPE: ;$ 3168 PROTOTYPE: ;$
2258 CODE: 3169 CODE:
2308 eval = 1 3219 eval = 1
2309 CODE: 3220 CODE:
2310{ 3221{
2311 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3222 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2312 { 3223 {
2313 struct coro temp; 3224 struct coro *current = SvSTATE_current;
2314 3225
2315 if (!(coro->flags & CF_RUNNING)) 3226 if (current != coro)
2316 { 3227 {
2317 PUTBACK; 3228 PUTBACK;
2318 save_perl (aTHX_ &temp); 3229 save_perl (aTHX_ current);
2319 load_perl (aTHX_ coro); 3230 load_perl (aTHX_ coro);
3231 SPAGAIN;
2320 } 3232 }
2321 3233
2322 {
2323 dSP;
2324 ENTER;
2325 SAVETMPS;
2326 PUTBACK;
2327 PUSHSTACK; 3234 PUSHSTACK;
3235
2328 PUSHMARK (SP); 3236 PUSHMARK (SP);
3237 PUTBACK;
2329 3238
2330 if (ix) 3239 if (ix)
2331 eval_sv (coderef, 0); 3240 eval_sv (coderef, 0);
2332 else 3241 else
2333 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3242 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2334 3243
2335 POPSTACK; 3244 POPSTACK;
2336 SPAGAIN; 3245 SPAGAIN;
2337 FREETMPS;
2338 LEAVE;
2339 PUTBACK;
2340 }
2341 3246
2342 if (!(coro->flags & CF_RUNNING)) 3247 if (current != coro)
2343 { 3248 {
3249 PUTBACK;
2344 save_perl (aTHX_ coro); 3250 save_perl (aTHX_ coro);
2345 load_perl (aTHX_ &temp); 3251 load_perl (aTHX_ current);
2346 SPAGAIN; 3252 SPAGAIN;
2347 } 3253 }
2348 } 3254 }
2349} 3255}
2350 3256
2354 ALIAS: 3260 ALIAS:
2355 is_ready = CF_READY 3261 is_ready = CF_READY
2356 is_running = CF_RUNNING 3262 is_running = CF_RUNNING
2357 is_new = CF_NEW 3263 is_new = CF_NEW
2358 is_destroyed = CF_DESTROYED 3264 is_destroyed = CF_DESTROYED
3265 is_suspended = CF_SUSPENDED
2359 CODE: 3266 CODE:
2360 RETVAL = boolSV (coro->flags & ix); 3267 RETVAL = boolSV (coro->flags & ix);
2361 OUTPUT: 3268 OUTPUT:
2362 RETVAL 3269 RETVAL
2363 3270
2365throw (Coro::State self, SV *throw = &PL_sv_undef) 3272throw (Coro::State self, SV *throw = &PL_sv_undef)
2366 PROTOTYPE: $;$ 3273 PROTOTYPE: $;$
2367 CODE: 3274 CODE:
2368{ 3275{
2369 struct coro *current = SvSTATE_current; 3276 struct coro *current = SvSTATE_current;
2370 SV **throwp = self == current ? &coro_throw : &self->throw; 3277 SV **throwp = self == current ? &CORO_THROW : &self->except;
2371 SvREFCNT_dec (*throwp); 3278 SvREFCNT_dec (*throwp);
3279 SvGETMAGIC (throw);
2372 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3280 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2373} 3281}
2374 3282
2375void 3283void
2376api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3284api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2379 3287
2380SV * 3288SV *
2381has_cctx (Coro::State coro) 3289has_cctx (Coro::State coro)
2382 PROTOTYPE: $ 3290 PROTOTYPE: $
2383 CODE: 3291 CODE:
2384 RETVAL = boolSV (!!coro->cctx); 3292 /* maybe manage the running flag differently */
3293 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2385 OUTPUT: 3294 OUTPUT:
2386 RETVAL 3295 RETVAL
2387 3296
2388int 3297int
2389is_traced (Coro::State coro) 3298is_traced (Coro::State coro)
2409 3318
2410void 3319void
2411force_cctx () 3320force_cctx ()
2412 PROTOTYPE: 3321 PROTOTYPE:
2413 CODE: 3322 CODE:
2414 SvSTATE_current->cctx->idle_sp = 0; 3323 cctx_current->idle_sp = 0;
2415 3324
2416void 3325void
2417swap_defsv (Coro::State self) 3326swap_defsv (Coro::State self)
2418 PROTOTYPE: $ 3327 PROTOTYPE: $
2419 ALIAS: 3328 ALIAS:
2427 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3336 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2428 3337
2429 SV *tmp = *src; *src = *dst; *dst = tmp; 3338 SV *tmp = *src; *src = *dst; *dst = tmp;
2430 } 3339 }
2431 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
2432MODULE = Coro::State PACKAGE = Coro 3385MODULE = Coro::State PACKAGE = Coro
2433 3386
2434BOOT: 3387BOOT:
2435{ 3388{
2436 int i;
2437
2438 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2439 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3389 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2440 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3390 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2441 3391 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3392 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2442 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3393 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2443 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);
2444 3403
2445 coro_stash = gv_stashpv ("Coro", TRUE); 3404 coro_stash = gv_stashpv ("Coro", TRUE);
2446 3405
2447 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3406 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2448 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3407 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2449 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3408 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2450 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3409 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2451 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3410 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2452 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3411 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2453
2454 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2455 coro_ready[i] = newAV ();
2456 3412
2457 { 3413 {
2458 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3414 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2459 3415
2460 coroapi.schedule = api_schedule; 3416 coroapi.schedule = api_schedule;
3417 coroapi.schedule_to = api_schedule_to;
2461 coroapi.cede = api_cede; 3418 coroapi.cede = api_cede;
2462 coroapi.cede_notself = api_cede_notself; 3419 coroapi.cede_notself = api_cede_notself;
2463 coroapi.ready = api_ready; 3420 coroapi.ready = api_ready;
2464 coroapi.is_ready = api_is_ready; 3421 coroapi.is_ready = api_is_ready;
2465 coroapi.nready = coro_nready; 3422 coroapi.nready = coro_nready;
2466 coroapi.current = coro_current; 3423 coroapi.current = coro_current;
2467 3424
2468 GCoroAPI = &coroapi; 3425 /*GCoroAPI = &coroapi;*/
2469 sv_setiv (sv, (IV)&coroapi); 3426 sv_setiv (sv, (IV)&coroapi);
2470 SvREADONLY_on (sv); 3427 SvREADONLY_on (sv);
2471 } 3428 }
2472} 3429}
3430
3431void
3432terminate (...)
3433 CODE:
3434 CORO_EXECUTE_SLF_XS (slf_init_terminate);
2473 3435
2474void 3436void
2475schedule (...) 3437schedule (...)
2476 CODE: 3438 CODE:
2477 CORO_EXECUTE_SLF_XS (slf_init_schedule); 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);
2478 3450
2479void 3451void
2480cede (...) 3452cede (...)
2481 CODE: 3453 CODE:
2482 CORO_EXECUTE_SLF_XS (slf_init_cede); 3454 CORO_EXECUTE_SLF_XS (slf_init_cede);
2496void 3468void
2497_set_readyhook (SV *hook) 3469_set_readyhook (SV *hook)
2498 PROTOTYPE: $ 3470 PROTOTYPE: $
2499 CODE: 3471 CODE:
2500 SvREFCNT_dec (coro_readyhook); 3472 SvREFCNT_dec (coro_readyhook);
3473 SvGETMAGIC (hook);
2501 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3474 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2502 3475
2503int 3476int
2504prio (Coro::State coro, int newprio = 0) 3477prio (Coro::State coro, int newprio = 0)
2505 PROTOTYPE: $;$ 3478 PROTOTYPE: $;$
2512 if (items > 1) 3485 if (items > 1)
2513 { 3486 {
2514 if (ix) 3487 if (ix)
2515 newprio = coro->prio - newprio; 3488 newprio = coro->prio - newprio;
2516 3489
2517 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3490 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2518 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3491 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2519 3492
2520 coro->prio = newprio; 3493 coro->prio = newprio;
2521 } 3494 }
2522} 3495}
2523 OUTPUT: 3496 OUTPUT:
2537 CODE: 3510 CODE:
2538 RETVAL = coro_nready; 3511 RETVAL = coro_nready;
2539 OUTPUT: 3512 OUTPUT:
2540 RETVAL 3513 RETVAL
2541 3514
2542# for async_pool speedup
2543void 3515void
2544_pool_1 (SV *cb) 3516suspend (Coro::State self)
3517 PROTOTYPE: $
2545 CODE: 3518 CODE:
2546{ 3519 self->flags |= CF_SUSPENDED;
2547 HV *hv = (HV *)SvRV (coro_current);
2548 struct coro *coro = SvSTATE_hv ((SV *)hv);
2549 AV *defav = GvAV (PL_defgv);
2550 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2551 AV *invoke_av;
2552 int i, len;
2553
2554 if (!invoke)
2555 {
2556 SV *old = PL_diehook;
2557 PL_diehook = 0;
2558 SvREFCNT_dec (old);
2559 croak ("\3async_pool terminate\2\n");
2560 }
2561
2562 SvREFCNT_dec (coro->saved_deffh);
2563 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2564
2565 hv_store (hv, "desc", sizeof ("desc") - 1,
2566 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2567
2568 invoke_av = (AV *)SvRV (invoke);
2569 len = av_len (invoke_av);
2570
2571 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2572
2573 if (len > 0)
2574 {
2575 av_fill (defav, len - 1);
2576 for (i = 0; i < len; ++i)
2577 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2578 }
2579}
2580 3520
2581void 3521void
2582_pool_2 (SV *cb) 3522resume (Coro::State self)
3523 PROTOTYPE: $
2583 CODE: 3524 CODE:
2584{ 3525 self->flags &= ~CF_SUSPENDED;
2585 HV *hv = (HV *)SvRV (coro_current);
2586 struct coro *coro = SvSTATE_hv ((SV *)hv);
2587
2588 sv_setsv (cb, &PL_sv_undef);
2589
2590 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2591 coro->saved_deffh = 0;
2592
2593 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2594 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2595 {
2596 SV *old = PL_diehook;
2597 PL_diehook = 0;
2598 SvREFCNT_dec (old);
2599 croak ("\3async_pool terminate\2\n");
2600 }
2601
2602 av_clear (GvAV (PL_defgv));
2603 hv_store (hv, "desc", sizeof ("desc") - 1,
2604 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2605
2606 coro->prio = 0;
2607
2608 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2609 api_trace (aTHX_ coro_current, 0);
2610
2611 av_push (av_async_pool, newSVsv (coro_current));
2612}
2613
2614
2615MODULE = Coro::State PACKAGE = Coro::AIO
2616 3526
2617void 3527void
2618_get_state (SV *self) 3528_pool_handler (...)
3529 CODE:
3530 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3531
3532void
3533async_pool (SV *cv, ...)
2619 PROTOTYPE: $ 3534 PROTOTYPE: &@
2620 PPCODE: 3535 PPCODE:
2621{ 3536{
2622 AV *defav = GvAV (PL_defgv); 3537 HV *hv = (HV *)av_pop (av_async_pool);
2623 AV *av = newAV (); 3538 AV *av = newAV ();
3539 SV *cb = ST (0);
2624 int i; 3540 int i;
2625 SV *data_sv = newSV (sizeof (struct io_state));
2626 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2627 SvCUR_set (data_sv, sizeof (struct io_state));
2628 SvPOK_only (data_sv);
2629 3541
2630 data->errorno = errno; 3542 av_extend (av, items - 2);
2631 data->laststype = PL_laststype; 3543 for (i = 1; i < items; ++i)
2632 data->laststatval = PL_laststatval;
2633 data->statcache = PL_statcache;
2634
2635 av_extend (av, AvFILLp (defav) + 1 + 1);
2636
2637 for (i = 0; i <= AvFILLp (defav); ++i)
2638 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3544 av_push (av, SvREFCNT_inc_NN (ST (i)));
2639 3545
2640 av_push (av, data_sv); 3546 if ((SV *)hv == &PL_sv_undef)
2641
2642 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2643
2644 api_ready (aTHX_ self);
2645}
2646
2647void
2648_set_state (SV *state)
2649 PROTOTYPE: $
2650 PPCODE:
2651{
2652 AV *av = (AV *)SvRV (state);
2653 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2654 int i;
2655
2656 errno = data->errorno;
2657 PL_laststype = data->laststype;
2658 PL_laststatval = data->laststatval;
2659 PL_statcache = data->statcache;
2660
2661 EXTEND (SP, AvFILLp (av));
2662 for (i = 0; i < AvFILLp (av); ++i)
2663 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2664}
2665
2666
2667MODULE = Coro::State PACKAGE = Coro::AnyEvent
2668
2669BOOT:
2670 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2671
2672void
2673_schedule (...)
2674 CODE:
2675{
2676 static int incede;
2677
2678 api_cede_notself (aTHX);
2679
2680 ++incede;
2681 while (coro_nready >= incede && api_cede (aTHX))
2682 ;
2683
2684 sv_setsv (sv_activity, &PL_sv_undef);
2685 if (coro_nready >= incede)
2686 { 3547 {
2687 PUSHMARK (SP); 3548 PUSHMARK (SP);
3549 EXTEND (SP, 2);
3550 PUSHs (sv_Coro);
3551 PUSHs ((SV *)cv_pool_handler);
2688 PUTBACK; 3552 PUTBACK;
2689 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3553 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2690 SPAGAIN; 3554 SPAGAIN;
3555
3556 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2691 } 3557 }
2692 3558
2693 --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 */
2694} 3613}
2695 3614
2696 3615
2697MODULE = Coro::State PACKAGE = PerlIO::cede 3616MODULE = Coro::State PACKAGE = PerlIO::cede
2698 3617
2699BOOT: 3618BOOT:
2700 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3619 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2701 3620
3621
2702MODULE = Coro::State PACKAGE = Coro::Semaphore 3622MODULE = Coro::State PACKAGE = Coro::Semaphore
2703 3623
2704SV * 3624SV *
2705new (SV *klass, SV *count_ = 0) 3625new (SV *klass, SV *count = 0)
2706 CODE: 3626 CODE:
2707{ 3627{
2708 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3628 int semcnt = 1;
2709 AV *av = newAV (); 3629
2710 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3630 if (count)
2711 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 );
2712} 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);
2713 OUTPUT: 3651 OUTPUT:
2714 RETVAL 3652 RETVAL
2715 3653
2716SV * 3654SV *
2717count (SV *self) 3655count (SV *self)
2726 adjust = 1 3664 adjust = 1
2727 CODE: 3665 CODE:
2728 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3666 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2729 3667
2730void 3668void
2731down (SV *self) 3669down (...)
2732 CODE: 3670 CODE:
2733 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3671 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3672
3673void
3674wait (...)
3675 CODE:
3676 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2734 3677
2735void 3678void
2736try (SV *self) 3679try (SV *self)
2737 PPCODE: 3680 PPCODE:
2738{ 3681{
2750 XSRETURN_NO; 3693 XSRETURN_NO;
2751} 3694}
2752 3695
2753void 3696void
2754waiters (SV *self) 3697waiters (SV *self)
2755 CODE: 3698 PPCODE:
2756{ 3699{
2757 AV *av = (AV *)SvRV (self); 3700 AV *av = (AV *)SvRV (self);
3701 int wcount = AvFILLp (av) + 1 - 1;
2758 3702
2759 if (GIMME_V == G_SCALAR) 3703 if (GIMME_V == G_SCALAR)
2760 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3704 XPUSHs (sv_2mortal (newSViv (wcount)));
2761 else 3705 else
2762 { 3706 {
2763 int i; 3707 int i;
2764 EXTEND (SP, AvFILLp (av) + 1 - 1); 3708 EXTEND (SP, wcount);
2765 for (i = 1; i <= AvFILLp (av); ++i) 3709 for (i = 1; i <= wcount; ++i)
2766 PUSHs (newSVsv (AvARRAY (av)[i])); 3710 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2767 } 3711 }
2768} 3712}
2769 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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