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Comparing Coro/Coro/State.xs (file contents):
Revision 1.267 by root, Fri Nov 14 06:29:52 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
… …
116# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
121#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
122#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
123 137
124#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
125 139
126#if __GNUC__ >= 3 140#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
128# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr), (value))
129# define INLINE static inline 143# define INLINE static inline
130#else 144#else
131# define attribute(x) 145# define attribute(x)
132# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
133# define INLINE static 147# define INLINE static
… …
137#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
138 152
139#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
140 154
141#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
142 157
143#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
144
145static perl_mutex coro_lock;
146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD 159# if CORO_PTHREAD
149static void *coro_thx; 160static void *coro_thx;
150# endif 161# endif
162#endif
151 163
152#else 164#ifdef __linux
153 165# include <time.h> /* for timespec */
154# define LOCK (void)0 166# include <syscall.h> /* for SYS_* */
155# define UNLOCK (void)0 167# ifdef SYS_clock_gettime
156 168# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
169# define CORO_CLOCK_MONOTONIC 1
170# define CORO_CLOCK_THREAD_CPUTIME_ID 3
157#endif 171# endif
158 172#endif
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
163
164/* helper storage struct for Coro::AIO */
165struct io_state
166{
167 AV *res;
168 int errorno;
169 I32 laststype; /* U16 in 5.10.0 */
170 int laststatval;
171 Stat_t statcache;
172};
173 173
174static 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);
175 180
176static U32 cctx_gen; 181static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 182static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 183static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 184static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 185static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 186static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 187static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184 188
185struct transfer_args 189static AV *av_destroy; /* destruction queue */
186{ 190static SV *sv_manager; /* the manager coro */
187 struct coro *prev, *next; 191static SV *sv_idle; /* $Coro::idle */
188};
189 192
190static GV *irsgv; /* $/ */ 193static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 194static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 195static SV *rv_diehook;
193static SV *rv_warnhook; 196static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */ 197static HV *hv_sig; /* %SIG */
195 198
196/* async_pool helper stuff */ 199/* async_pool helper stuff */
197static SV *sv_pool_rss; 200static SV *sv_pool_rss;
198static SV *sv_pool_size; 201static SV *sv_pool_size;
202static SV *sv_async_pool_idle; /* description string */
199static 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;
200 207
201/* Coro::AnyEvent */ 208/* Coro::AnyEvent */
202static 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;
203 216
204static struct coro_cctx *cctx_first; 217static struct coro_cctx *cctx_first;
205static int cctx_count, cctx_idle; 218static int cctx_count, cctx_idle;
206 219
207enum { 220enum {
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 225 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 226 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 227};
215 228
216/* this is a structure representing a c-level coroutine */ 229/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 230typedef struct coro_cctx
231{
218 struct coro_cctx *next; 232 struct coro_cctx *next;
219 233
220 /* the stack */ 234 /* the stack */
221 void *sptr; 235 void *sptr;
222 size_t ssize; 236 size_t ssize;
… …
232 int valgrind_id; 246 int valgrind_id;
233#endif 247#endif
234 unsigned char flags; 248 unsigned char flags;
235} coro_cctx; 249} coro_cctx;
236 250
251coro_cctx *cctx_current; /* the currently running cctx */
252
253/*****************************************************************************/
254
237enum { 255enum {
238 CF_RUNNING = 0x0001, /* coroutine is running */ 256 CF_RUNNING = 0x0001, /* coroutine is running */
239 CF_READY = 0x0002, /* coroutine is ready */ 257 CF_READY = 0x0002, /* coroutine is ready */
240 CF_NEW = 0x0004, /* has never been switched to */ 258 CF_NEW = 0x0004, /* has never been switched to */
241 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 */
242}; 261};
243 262
244/* 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 */
245typedef struct { 264typedef struct
265{
246 SV *defsv; 266 SV *defsv;
247 AV *defav; 267 AV *defav;
248 SV *errsv; 268 SV *errsv;
249 SV *irsgv; 269 SV *irsgv;
270 HV *hinthv;
250#define VAR(name,type) type name; 271#define VAR(name,type) type name;
251# include "state.h" 272# include "state.h"
252#undef VAR 273#undef VAR
253} perl_slots; 274} perl_slots;
254 275
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 276#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 277
257/* this is a structure representing a perl-level coroutine */ 278/* this is a structure representing a perl-level coroutine */
258struct coro { 279struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 280 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 281 coro_cctx *cctx;
261 282
262 /* process data */ 283 /* ready queue */
284 struct coro *next_ready;
285
286 /* state data */
287 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 288 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 289 perl_slots *slot; /* basically the saved sp */
265 290
291 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 292 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 293 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 294 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 295 HV *hv; /* the perl hash associated with this coro, if any */
296 void (*on_destroy)(pTHX_ struct coro *coro);
270 297
271 /* statistics */ 298 /* statistics */
272 int usecount; /* number of transfers to this coro */ 299 int usecount; /* number of transfers to this coro */
273 300
274 /* coro process data */ 301 /* coro process data */
275 int prio; 302 int prio;
276 SV *throw; /* exception to be thrown */ 303 SV *except; /* exception to be thrown */
304 SV *rouse_cb;
277 305
278 /* async_pool */ 306 /* async_pool */
279 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;
280 317
281 /* linked list */ 318 /* linked list */
282 struct coro *next, *prev; 319 struct coro *next, *prev;
283}; 320};
284 321
285typedef struct coro *Coro__State; 322typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 323typedef struct coro *Coro__State_or_hashref;
287 324
325/* the following variables are effectively part of the perl context */
326/* and get copied between struct coro and these variables */
327/* the mainr easonw e don't support windows process emulation */
328static struct CoroSLF slf_frame; /* the current slf frame */
329
288/** Coro ********************************************************************/ 330/** Coro ********************************************************************/
289 331
290#define PRIO_MAX 3 332#define CORO_PRIO_MAX 3
291#define PRIO_HIGH 1 333#define CORO_PRIO_HIGH 1
292#define PRIO_NORMAL 0 334#define CORO_PRIO_NORMAL 0
293#define PRIO_LOW -1 335#define CORO_PRIO_LOW -1
294#define PRIO_IDLE -3 336#define CORO_PRIO_IDLE -3
295#define PRIO_MIN -4 337#define CORO_PRIO_MIN -4
296 338
297/* for Coro.pm */ 339/* for Coro.pm */
298static SV *coro_current; 340static SV *coro_current;
299static SV *coro_readyhook; 341static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 342static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
301static int coro_nready; 343static CV *cv_coro_run, *cv_coro_terminate;
302static struct coro *coro_first; 344static struct coro *coro_first;
345#define coro_nready coroapi.nready
303 346
304/** lowlevel stuff **********************************************************/ 347/** lowlevel stuff **********************************************************/
305 348
306static SV * 349static SV *
307coro_get_sv (pTHX_ const char *name, int create) 350coro_get_sv (pTHX_ const char *name, int create)
… …
331 get_hv (name, create); 374 get_hv (name, create);
332#endif 375#endif
333 return get_hv (name, create); 376 return get_hv (name, create);
334} 377}
335 378
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
336static AV * 491static AV *
337coro_clone_padlist (pTHX_ CV *cv) 492coro_derive_padlist (pTHX_ CV *cv)
338{ 493{
339 AV *padlist = CvPADLIST (cv); 494 AV *padlist = CvPADLIST (cv);
340 AV *newpadlist, *newpad; 495 AV *newpadlist, *newpad;
341 496
342 newpadlist = newAV (); 497 newpadlist = newAV ();
… …
347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 502 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
348#endif 503#endif
349 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 504 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
350 --AvFILLp (padlist); 505 --AvFILLp (padlist);
351 506
352 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 507 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
353 av_store (newpadlist, 1, (SV *)newpad); 508 av_store (newpadlist, 1, (SV *)newpad);
354 509
355 return newpadlist; 510 return newpadlist;
356} 511}
357 512
358static void 513static void
359free_padlist (pTHX_ AV *padlist) 514free_padlist (pTHX_ AV *padlist)
360{ 515{
361 /* may be during global destruction */ 516 /* may be during global destruction */
362 if (SvREFCNT (padlist)) 517 if (!IN_DESTRUCT)
363 { 518 {
364 I32 i = AvFILLp (padlist); 519 I32 i = AvFILLp (padlist);
365 while (i >= 0) 520
521 while (i > 0) /* special-case index 0 */
366 { 522 {
367 SV **svp = av_fetch (padlist, i--, FALSE); 523 /* we try to be extra-careful here */
368 if (svp) 524 AV *av = (AV *)AvARRAY (padlist)[i--];
369 { 525 I32 j = AvFILLp (av);
370 SV *sv; 526
371 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 527 while (j >= 0)
528 SvREFCNT_dec (AvARRAY (av)[j--]);
529
530 AvFILLp (av) = -1;
372 SvREFCNT_dec (sv); 531 SvREFCNT_dec (av);
373
374 SvREFCNT_dec (*svp);
375 }
376 } 532 }
377 533
534 SvREFCNT_dec (AvARRAY (padlist)[0]);
535
536 AvFILLp (padlist) = -1;
378 SvREFCNT_dec ((SV*)padlist); 537 SvREFCNT_dec ((SV*)padlist);
379 } 538 }
380} 539}
381 540
382static int 541static int
383coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 542coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
384{ 543{
385 AV *padlist; 544 AV *padlist;
386 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;
387 550
388 /* casting is fun. */ 551 /* casting is fun. */
389 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 552 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
390 free_padlist (aTHX_ padlist); 553 free_padlist (aTHX_ padlist);
391 554
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 555 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 556
394 return 0; 557 return 0;
395} 558}
396
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext
398#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 559
400static MGVTBL coro_cv_vtbl = { 560static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 561 0, 0, 0, 0,
402 coro_cv_free 562 coro_cv_free
403}; 563};
404
405#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \
407 ? SvMAGIC (sv)->mg_type == type \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0
411
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
414
415INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro)
417{
418 HV *stash;
419 MAGIC *mg;
420
421 if (SvROK (coro))
422 coro = SvRV (coro);
423
424 if (expect_false (SvTYPE (coro) != SVt_PVHV))
425 croak ("Coro::State object required");
426
427 stash = SvSTASH (coro);
428 if (expect_false (stash != coro_stash && stash != coro_state_stash))
429 {
430 /* very slow, but rare, check */
431 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
432 croak ("Coro::State object required");
433 }
434
435 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr;
437}
438
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
440 564
441/* the next two functions merely cache the padlists */ 565/* the next two functions merely cache the padlists */
442static void 566static void
443get_padlist (pTHX_ CV *cv) 567get_padlist (pTHX_ CV *cv)
444{ 568{
… …
450 else 574 else
451 { 575 {
452#if CORO_PREFER_PERL_FUNCTIONS 576#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 577 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 578 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 579 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 580 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 581 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 582 SvREFCNT_dec (cp);
459#else 583#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 584 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
461#endif 585#endif
462 } 586 }
463} 587}
464 588
465static void 589static void
… …
472 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);
473 597
474 av = (AV *)mg->mg_obj; 598 av = (AV *)mg->mg_obj;
475 599
476 if (expect_false (AvFILLp (av) >= AvMAX (av))) 600 if (expect_false (AvFILLp (av) >= AvMAX (av)))
477 av_extend (av, AvMAX (av) + 1); 601 av_extend (av, AvFILLp (av) + 1);
478 602
479 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 603 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
480} 604}
481 605
482/** load & save, init *******************************************************/ 606/** load & save, init *******************************************************/
607
608static void
609on_enterleave_call (pTHX_ SV *cb);
483 610
484static void 611static void
485load_perl (pTHX_ Coro__State c) 612load_perl (pTHX_ Coro__State c)
486{ 613{
487 perl_slots *slot = c->slot; 614 perl_slots *slot = c->slot;
488 c->slot = 0; 615 c->slot = 0;
489 616
490 PL_mainstack = c->mainstack; 617 PL_mainstack = c->mainstack;
491 618
492 GvSV (PL_defgv) = slot->defsv; 619 GvSV (PL_defgv) = slot->defsv;
493 GvAV (PL_defgv) = slot->defav; 620 GvAV (PL_defgv) = slot->defav;
494 GvSV (PL_errgv) = slot->errsv; 621 GvSV (PL_errgv) = slot->errsv;
495 GvSV (irsgv) = slot->irsgv; 622 GvSV (irsgv) = slot->irsgv;
623 GvHV (PL_hintgv) = slot->hinthv;
496 624
497 #define VAR(name,type) PL_ ## name = slot->name; 625 #define VAR(name,type) PL_ ## name = slot->name;
498 # include "state.h" 626 # include "state.h"
499 #undef VAR 627 #undef VAR
500 628
… …
511 CvPADLIST (cv) = (AV *)POPs; 639 CvPADLIST (cv) = (AV *)POPs;
512 } 640 }
513 641
514 PUTBACK; 642 PUTBACK;
515 } 643 }
644
645 slf_frame = c->slf_frame;
646 CORO_THROW = c->except;
647
648 if (expect_false (enable_times))
649 {
650 if (expect_false (!times_valid))
651 coro_times_update ();
652
653 coro_times_sub (c);
654 }
655
656 if (expect_false (c->on_enter))
657 {
658 int i;
659
660 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
661 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
662 }
516} 663}
517 664
518static void 665static void
519save_perl (pTHX_ Coro__State c) 666save_perl (pTHX_ Coro__State c)
520{ 667{
668 if (expect_false (c->on_leave))
669 {
670 int i;
671
672 for (i = AvFILLp (c->on_leave); i >= 0; --i)
673 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
674 }
675
676 times_valid = 0;
677
678 if (expect_false (enable_times))
679 {
680 coro_times_update (); times_valid = 1;
681 coro_times_add (c);
682 }
683
684 c->except = CORO_THROW;
685 c->slf_frame = slf_frame;
686
521 { 687 {
522 dSP; 688 dSP;
523 I32 cxix = cxstack_ix; 689 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 690 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 691 PERL_SI *top_si = PL_curstackinfo;
… …
535 { 701 {
536 while (expect_true (cxix >= 0)) 702 while (expect_true (cxix >= 0))
537 { 703 {
538 PERL_CONTEXT *cx = &ccstk[cxix--]; 704 PERL_CONTEXT *cx = &ccstk[cxix--];
539 705
540 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))
541 { 707 {
542 CV *cv = cx->blk_sub.cv; 708 CV *cv = cx->blk_sub.cv;
543 709
544 if (expect_true (CvDEPTH (cv))) 710 if (expect_true (CvDEPTH (cv)))
545 { 711 {
… …
580 c->mainstack = PL_mainstack; 746 c->mainstack = PL_mainstack;
581 747
582 { 748 {
583 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 749 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
584 750
585 slot->defav = GvAV (PL_defgv); 751 slot->defav = GvAV (PL_defgv);
586 slot->defsv = DEFSV; 752 slot->defsv = DEFSV;
587 slot->errsv = ERRSV; 753 slot->errsv = ERRSV;
588 slot->irsgv = GvSV (irsgv); 754 slot->irsgv = GvSV (irsgv);
755 slot->hinthv = GvHV (PL_hintgv);
589 756
590 #define VAR(name,type) slot->name = PL_ ## name; 757 #define VAR(name,type) slot->name = PL_ ## name;
591 # include "state.h" 758 # include "state.h"
592 #undef VAR 759 #undef VAR
593 } 760 }
594} 761}
595 762
596/* 763/*
597 * allocate various perl stacks. This is an exact copy 764 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 765 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 766 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 767 * not usually need a lot of stackspace.
601 */ 768 */
602#if CORO_PREFER_PERL_FUNCTIONS 769#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 770# define coro_init_stacks(thx) init_stacks ()
604#else 771#else
605static void 772static void
606coro_init_stacks (pTHX) 773coro_init_stacks (pTHX)
607{ 774{
608 PL_curstackinfo = new_stackinfo(32, 8); 775 PL_curstackinfo = new_stackinfo(32, 8);
… …
671#if !PERL_VERSION_ATLEAST (5,10,0) 838#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 839 Safefree (PL_retstack);
673#endif 840#endif
674} 841}
675 842
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
676static size_t 852static size_t
677coro_rss (pTHX_ struct coro *coro) 853coro_rss (pTHX_ struct coro *coro)
678{ 854{
679 size_t rss = sizeof (*coro); 855 size_t rss = sizeof (*coro);
680 856
681 if (coro->mainstack) 857 if (coro->mainstack)
682 { 858 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 859 if (coro->flags & CF_RUNNING)
687 { 860 {
688 slot = &tmp_slot; 861 #define SYM(sym) PL_ ## sym
689 862 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 863 #undef SYM
693 } 864 }
694 else 865 else
695 slot = coro->slot;
696
697 if (slot)
698 { 866 {
699 rss += sizeof (slot->curstackinfo); 867 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 868 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 869 #undef SYM
702 rss += slot->tmps_max * sizeof (SV *);
703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
704 rss += slot->scopestack_max * sizeof (I32);
705 rss += slot->savestack_max * sizeof (ANY);
706
707#if !PERL_VERSION_ATLEAST (5,10,0)
708 rss += slot->retstack_max * sizeof (OP *);
709#endif
710 } 870 }
711 } 871 }
712 872
713 return rss; 873 return rss;
714}
715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we sometimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 SV **bot = SP;
728
729 int gimme = GIMME_V;
730
731 /* make sure we put something on the stack in scalar context */
732 if (gimme == G_SCALAR)
733 {
734 if (sp == bot)
735 XPUSHs (&PL_sv_undef);
736
737 SP = bot + 1;
738 }
739
740 PUTBACK;
741} 874}
742 875
743/** coroutine stack handling ************************************************/ 876/** coroutine stack handling ************************************************/
744 877
745static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 878static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
754#endif 887#endif
755 888
756/* 889/*
757 * This overrides the default magic get method of %SIG elements. 890 * This overrides the default magic get method of %SIG elements.
758 * 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
759 * 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
760 * readback here. 893 * readback here.
761 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
762 * not expecting this to actually change the hook. This is a potential problem
763 * when a schedule happens then, but we ignore this.
764 */ 894 */
765static int 895static int
766coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 896coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
767{ 897{
768 const char *s = MgPV_nolen_const (mg); 898 const char *s = MgPV_nolen_const (mg);
… …
821 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 951 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
822 952
823 if (svp) 953 if (svp)
824 { 954 {
825 SV *old = *svp; 955 SV *old = *svp;
826 *svp = newSVsv (sv); 956 *svp = SvOK (sv) ? newSVsv (sv) : 0;
827 SvREFCNT_dec (old); 957 SvREFCNT_dec (old);
828 return 0; 958 return 0;
829 } 959 }
830 } 960 }
831 961
832 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 962 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
833} 963}
834 964
835static void 965static void
966prepare_nop (pTHX_ struct coro_transfer_args *ta)
967{
968 /* kind of mega-hacky, but works */
969 ta->next = ta->prev = (struct coro *)ta;
970}
971
972static int
973slf_check_nop (pTHX_ struct CoroSLF *frame)
974{
975 return 0;
976}
977
978static int
979slf_check_repeat (pTHX_ struct CoroSLF *frame)
980{
981 return 1;
982}
983
984static UNOP coro_setup_op;
985
986static void NOINLINE /* noinline to keep it out of the transfer fast path */
836coro_setup (pTHX_ struct coro *coro) 987coro_setup (pTHX_ struct coro *coro)
837{ 988{
838 /* 989 /*
839 * emulate part of the perl startup here. 990 * emulate part of the perl startup here.
840 */ 991 */
… …
842 993
843 PL_runops = RUNOPS_DEFAULT; 994 PL_runops = RUNOPS_DEFAULT;
844 PL_curcop = &PL_compiling; 995 PL_curcop = &PL_compiling;
845 PL_in_eval = EVAL_NULL; 996 PL_in_eval = EVAL_NULL;
846 PL_comppad = 0; 997 PL_comppad = 0;
998 PL_comppad_name = 0;
999 PL_comppad_name_fill = 0;
1000 PL_comppad_name_floor = 0;
847 PL_curpm = 0; 1001 PL_curpm = 0;
848 PL_curpad = 0; 1002 PL_curpad = 0;
849 PL_localizing = 0; 1003 PL_localizing = 0;
850 PL_dirty = 0; 1004 PL_dirty = 0;
851 PL_restartop = 0; 1005 PL_restartop = 0;
852#if PERL_VERSION_ATLEAST (5,10,0) 1006#if PERL_VERSION_ATLEAST (5,10,0)
853 PL_parser = 0; 1007 PL_parser = 0;
854#endif 1008#endif
1009 PL_hints = 0;
855 1010
856 /* recreate the die/warn hooks */ 1011 /* recreate the die/warn hooks */
857 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 );
858 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);
859 1014
860 GvSV (PL_defgv) = newSV (0); 1015 GvSV (PL_defgv) = newSV (0);
861 GvAV (PL_defgv) = coro->args; coro->args = 0; 1016 GvAV (PL_defgv) = coro->args; coro->args = 0;
862 GvSV (PL_errgv) = newSV (0); 1017 GvSV (PL_errgv) = newSV (0);
863 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;
864 PL_rs = newSVsv (GvSV (irsgv)); 1020 PL_rs = newSVsv (GvSV (irsgv));
865 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1021 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
866 1022
867 { 1023 {
868 dSP; 1024 dSP;
869 UNOP myop; 1025 UNOP myop;
870 1026
871 Zero (&myop, 1, UNOP); 1027 Zero (&myop, 1, UNOP);
872 myop.op_next = Nullop; 1028 myop.op_next = Nullop;
1029 myop.op_type = OP_ENTERSUB;
873 myop.op_flags = OPf_WANT_VOID; 1030 myop.op_flags = OPf_WANT_VOID;
874 1031
875 PUSHMARK (SP); 1032 PUSHMARK (SP);
876 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1033 PUSHs ((SV *)coro->startcv);
877 PUTBACK; 1034 PUTBACK;
878 PL_op = (OP *)&myop; 1035 PL_op = (OP *)&myop;
879 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1036 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
880 SPAGAIN;
881 } 1037 }
882 1038
883 /* 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
884 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 1040 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
885 * so we have to emulate entering pp_set_stacklevel here.
886 */ 1041 */
887 SSL_HEAD; 1042 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
888} 1043 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
889 1044
1045 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1046 coro_setup_op.op_next = PL_op;
1047 coro_setup_op.op_type = OP_ENTERSUB;
1048 coro_setup_op.op_ppaddr = pp_slf;
1049 /* no flags etc. required, as an init function won't be called */
1050
1051 PL_op = (OP *)&coro_setup_op;
1052
1053 /* copy throw, in case it was set before coro_setup */
1054 CORO_THROW = coro->except;
1055
1056 if (expect_false (enable_times))
1057 {
1058 coro_times_update ();
1059 coro_times_sub (coro);
1060 }
1061}
1062
890static void 1063static void
891coro_destruct (pTHX_ struct coro *coro) 1064coro_unwind_stacks (pTHX)
892{ 1065{
893 if (!IN_DESTRUCT) 1066 if (!IN_DESTRUCT)
894 { 1067 {
895 /* restore all saved variables and stuff */ 1068 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0); 1069 LEAVE_SCOPE (0);
… …
904 POPSTACK_TO (PL_mainstack); 1077 POPSTACK_TO (PL_mainstack);
905 1078
906 /* unwind main stack */ 1079 /* unwind main stack */
907 dounwind (-1); 1080 dounwind (-1);
908 } 1081 }
1082}
909 1083
910 SvREFCNT_dec (GvSV (PL_defgv)); 1084static void
911 SvREFCNT_dec (GvAV (PL_defgv)); 1085coro_destruct_perl (pTHX_ struct coro *coro)
912 SvREFCNT_dec (GvSV (PL_errgv)); 1086{
913 SvREFCNT_dec (PL_defoutgv); 1087 SV *svf [9];
914 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv));
916 1088
917 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook);
919 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
920 SvREFCNT_dec (coro->saved_deffh); 1121 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro->throw); 1122 SvREFCNT_dec (coro->rouse_cb);
922 1123 SvREFCNT_dec (coro->invoke_cb);
923 coro_destruct_stacks (aTHX); 1124 SvREFCNT_dec (coro->invoke_av);
1125 }
924} 1126}
925 1127
926INLINE void 1128INLINE void
927free_coro_mortal (pTHX) 1129free_coro_mortal (pTHX)
928{ 1130{
… …
936static int 1138static int
937runops_trace (pTHX) 1139runops_trace (pTHX)
938{ 1140{
939 COP *oldcop = 0; 1141 COP *oldcop = 0;
940 int oldcxix = -2; 1142 int oldcxix = -2;
941 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943 1143
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1144 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 1145 {
946 PERL_ASYNC_CHECK (); 1146 PERL_ASYNC_CHECK ();
947 1147
948 if (cctx->flags & CC_TRACE_ALL) 1148 if (cctx_current->flags & CC_TRACE_ALL)
949 { 1149 {
950 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)
951 { 1151 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1152 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top; 1153 SV **bot, **top;
954 AV *av = newAV (); /* return values */ 1154 AV *av = newAV (); /* return values */
955 SV **cb; 1155 SV **cb;
… …
992 1192
993 if (PL_curcop != &PL_compiling) 1193 if (PL_curcop != &PL_compiling)
994 { 1194 {
995 SV **cb; 1195 SV **cb;
996 1196
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1197 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
998 { 1198 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1199 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000 1200
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1201 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 { 1202 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP; 1203 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv); 1204 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0)); 1205 SV *fullname = sv_2mortal (newSV (0));
1007 1206
1008 if (isGV (gv)) 1207 if (isGV (gv))
… …
1013 SAVETMPS; 1212 SAVETMPS;
1014 EXTEND (SP, 3); 1213 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1214 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1215 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1216 PUSHs (fullname);
1018 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);
1019 PUTBACK; 1218 PUTBACK;
1020 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);
1021 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);
1022 SPAGAIN; 1221 SPAGAIN;
1023 FREETMPS; 1222 FREETMPS;
… …
1026 } 1225 }
1027 1226
1028 oldcxix = cxstack_ix; 1227 oldcxix = cxstack_ix;
1029 } 1228 }
1030 1229
1031 if (cctx->flags & CC_TRACE_LINE) 1230 if (cctx_current->flags & CC_TRACE_LINE)
1032 { 1231 {
1033 dSP; 1232 dSP;
1034 1233
1035 PL_runops = RUNOPS_DEFAULT; 1234 PL_runops = RUNOPS_DEFAULT;
1036 ENTER; 1235 ENTER;
… …
1055 1254
1056 TAINT_NOT; 1255 TAINT_NOT;
1057 return 0; 1256 return 0;
1058} 1257}
1059 1258
1259static struct CoroSLF cctx_ssl_frame;
1260
1060static void 1261static void
1061prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1262slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1062{ 1263{
1063 ta->prev = (struct coro *)cctx;
1064 ta->next = 0; 1264 ta->prev = 0;
1065} 1265}
1066 1266
1067/* inject a fake call to Coro::State::_cctx_init into the execution */ 1267static int
1068/* _cctx_init should be careful, as it could be called at almost any time */ 1268slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1069/* during execution of a perl program */ 1269{
1070/* 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 */
1071static void NOINLINE 1276static void NOINLINE
1072cctx_prepare (pTHX_ coro_cctx *cctx) 1277cctx_prepare (pTHX)
1073{ 1278{
1074 dSP;
1075 UNOP myop;
1076
1077 PL_top_env = &PL_start_env; 1279 PL_top_env = &PL_start_env;
1078 1280
1079 if (cctx->flags & CC_TRACE) 1281 if (cctx_current->flags & CC_TRACE)
1080 PL_runops = runops_trace; 1282 PL_runops = runops_trace;
1081 1283
1082 Zero (&myop, 1, UNOP); 1284 /* we already must be executing an SLF op, there is no other valid way
1083 myop.op_next = PL_op; 1285 * that can lead to creation of a new cctx */
1084 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));
1085 1288
1086 PUSHMARK (SP); 1289 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1087 EXTEND (SP, 2); 1290 cctx_ssl_frame = slf_frame;
1088 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1291
1089 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1292 slf_frame.prepare = slf_prepare_set_stacklevel;
1090 PUTBACK; 1293 slf_frame.check = slf_check_set_stacklevel;
1091 PL_op = (OP *)&myop;
1092 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1093 SPAGAIN;
1094} 1294}
1095 1295
1096/* 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 */
1097INLINE void 1297INLINE void
1098transfer_tail (pTHX) 1298transfer_tail (pTHX)
1099{ 1299{
1100 struct coro *next = (struct coro *)transfer_next;
1101 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1102 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1103
1104 free_coro_mortal (aTHX); 1300 free_coro_mortal (aTHX);
1105 UNLOCK;
1106
1107 if (expect_false (next->throw))
1108 {
1109 SV *exception = sv_2mortal (next->throw);
1110
1111 next->throw = 0;
1112 sv_setsv (ERRSV, exception);
1113 croak (0);
1114 }
1115} 1301}
1116 1302
1117/* 1303/*
1118 * this is a _very_ stripped down perl interpreter ;) 1304 * this is a _very_ stripped down perl interpreter ;)
1119 */ 1305 */
… …
1126# endif 1312# endif
1127#endif 1313#endif
1128 { 1314 {
1129 dTHX; 1315 dTHX;
1130 1316
1131 /* we are the alternative tail to pp_set_stacklevel */ 1317 /* normally we would need to skip the entersub here */
1132 /* so do the same things here */ 1318 /* not doing so will re-execute it, which is exactly what we want */
1133 SSL_TAIL;
1134
1135 /* we now skip the op that did lead to transfer() */
1136 PL_op = PL_op->op_next; 1319 /* PL_nop = PL_nop->op_next */
1137 1320
1138 /* inject a fake subroutine call to cctx_init */ 1321 /* inject a fake subroutine call to cctx_init */
1139 cctx_prepare (aTHX_ (coro_cctx *)arg); 1322 cctx_prepare (aTHX);
1140 1323
1141 /* cctx_run is the alternative tail of transfer() */ 1324 /* cctx_run is the alternative tail of transfer() */
1142 transfer_tail (aTHX); 1325 transfer_tail (aTHX);
1143 1326
1144 /* 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 */
1145 PL_restartop = PL_op; 1328 PL_restartop = PL_op;
1146 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 */
1147 1334
1148 /* 1335 /*
1149 * 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
1150 * 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)
1151 * 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
1152 * bootstrap-time "top" top_env, as we cannot restore the "main" 1339 * bootstrap-time "top" top_env, as we cannot restore the "main"
1153 * 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.
1154 */ 1343 */
1155 PL_top_env = main_top_env; 1344 PL_top_env = main_top_env;
1156 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 */
1157 } 1346 }
1158} 1347}
… …
1235cctx_destroy (coro_cctx *cctx) 1424cctx_destroy (coro_cctx *cctx)
1236{ 1425{
1237 if (!cctx) 1426 if (!cctx)
1238 return; 1427 return;
1239 1428
1429 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1430
1240 --cctx_count; 1431 --cctx_count;
1241 coro_destroy (&cctx->cctx); 1432 coro_destroy (&cctx->cctx);
1242 1433
1243 /* coro_transfer creates new, empty cctx's */ 1434 /* coro_transfer creates new, empty cctx's */
1244 if (cctx->sptr) 1435 if (cctx->sptr)
… …
1302/** coroutine switching *****************************************************/ 1493/** coroutine switching *****************************************************/
1303 1494
1304static void 1495static void
1305transfer_check (pTHX_ struct coro *prev, struct coro *next) 1496transfer_check (pTHX_ struct coro *prev, struct coro *next)
1306{ 1497{
1498 /* TODO: throwing up here is considered harmful */
1499
1307 if (expect_true (prev != next)) 1500 if (expect_true (prev != next))
1308 { 1501 {
1309 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1502 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1310 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,");
1311 1504
1312 if (expect_false (next->flags & CF_RUNNING))
1313 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1314
1315 if (expect_false (next->flags & CF_DESTROYED)) 1505 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1316 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,");
1317 1507
1318#if !PERL_VERSION_ATLEAST (5,10,0) 1508#if !PERL_VERSION_ATLEAST (5,10,0)
1319 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1509 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1320 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,");
1321#endif 1511#endif
1322 } 1512 }
1323} 1513}
1324 1514
1325/* always use the TRANSFER macro */ 1515/* always use the TRANSFER macro */
1326static void NOINLINE 1516static void NOINLINE /* noinline so we have a fixed stackframe */
1327transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1517transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1328{ 1518{
1329 dSTACKLEVEL; 1519 dSTACKLEVEL;
1330 1520
1331 /* sometimes transfer is only called to set idle_sp */ 1521 /* sometimes transfer is only called to set idle_sp */
1332 if (expect_false (!next)) 1522 if (expect_false (!prev))
1333 { 1523 {
1334 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1524 cctx_current->idle_sp = STACKLEVEL;
1335 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 */
1336 } 1526 }
1337 else if (expect_true (prev != next)) 1527 else if (expect_true (prev != next))
1338 { 1528 {
1339 coro_cctx *prev__cctx; 1529 coro_cctx *cctx_prev;
1340 1530
1341 if (expect_false (prev->flags & CF_NEW)) 1531 if (expect_false (prev->flags & CF_NEW))
1342 { 1532 {
1343 /* create a new empty/source context */ 1533 /* create a new empty/source context */
1344 prev->cctx = cctx_new_empty ();
1345 prev->flags &= ~CF_NEW; 1534 prev->flags &= ~CF_NEW;
1346 prev->flags |= CF_RUNNING; 1535 prev->flags |= CF_RUNNING;
1347 } 1536 }
1348 1537
1349 prev->flags &= ~CF_RUNNING; 1538 prev->flags &= ~CF_RUNNING;
1350 next->flags |= CF_RUNNING; 1539 next->flags |= CF_RUNNING;
1351
1352 LOCK;
1353 1540
1354 /* first get rid of the old state */ 1541 /* first get rid of the old state */
1355 save_perl (aTHX_ prev); 1542 save_perl (aTHX_ prev);
1356 1543
1357 if (expect_false (next->flags & CF_NEW)) 1544 if (expect_false (next->flags & CF_NEW))
… …
1362 coro_setup (aTHX_ next); 1549 coro_setup (aTHX_ next);
1363 } 1550 }
1364 else 1551 else
1365 load_perl (aTHX_ next); 1552 load_perl (aTHX_ next);
1366 1553
1367 prev__cctx = prev->cctx;
1368
1369 /* possibly untie and reuse the cctx */ 1554 /* possibly untie and reuse the cctx */
1370 if (expect_true ( 1555 if (expect_true (
1371 prev__cctx->idle_sp == STACKLEVEL 1556 cctx_current->idle_sp == STACKLEVEL
1372 && !(prev__cctx->flags & CC_TRACE) 1557 && !(cctx_current->flags & CC_TRACE)
1373 && !force_cctx 1558 && !force_cctx
1374 )) 1559 ))
1375 { 1560 {
1376 /* 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 */
1377 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));
1378 1563
1379 prev->cctx = 0;
1380
1381 /* 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. */
1382 /* 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 */
1383 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1566 if (expect_false (CCTX_EXPIRED (cctx_current)))
1384 if (!next->cctx) 1567 if (expect_true (!next->cctx))
1385 next->cctx = cctx_get (aTHX); 1568 next->cctx = cctx_get (aTHX);
1386 1569
1387 cctx_put (prev__cctx); 1570 cctx_put (cctx_current);
1388 } 1571 }
1572 else
1573 prev->cctx = cctx_current;
1389 1574
1390 ++next->usecount; 1575 ++next->usecount;
1391 1576
1392 if (expect_true (!next->cctx)) 1577 cctx_prev = cctx_current;
1393 next->cctx = cctx_get (aTHX); 1578 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1394 1579
1395 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1580 next->cctx = 0;
1396 transfer_next = next;
1397 1581
1398 if (expect_false (prev__cctx != next->cctx)) 1582 if (expect_false (cctx_prev != cctx_current))
1399 { 1583 {
1400 prev__cctx->top_env = PL_top_env; 1584 cctx_prev->top_env = PL_top_env;
1401 PL_top_env = next->cctx->top_env; 1585 PL_top_env = cctx_current->top_env;
1402 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1586 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1403 } 1587 }
1404 1588
1405 transfer_tail (aTHX); 1589 transfer_tail (aTHX);
1406 } 1590 }
1407} 1591}
… …
1414static int 1598static int
1415coro_state_destroy (pTHX_ struct coro *coro) 1599coro_state_destroy (pTHX_ struct coro *coro)
1416{ 1600{
1417 if (coro->flags & CF_DESTROYED) 1601 if (coro->flags & CF_DESTROYED)
1418 return 0; 1602 return 0;
1603
1604 if (coro->on_destroy && !PL_dirty)
1605 coro->on_destroy (aTHX_ coro);
1419 1606
1420 coro->flags |= CF_DESTROYED; 1607 coro->flags |= CF_DESTROYED;
1421 1608
1422 if (coro->flags & CF_READY) 1609 if (coro->flags & CF_READY)
1423 { 1610 {
1424 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1611 /* reduce nready, as destroying a ready coro effectively unreadies it */
1425 /* alternative: look through all ready queues and remove the coro */ 1612 /* alternative: look through all ready queues and remove the coro */
1426 LOCK;
1427 --coro_nready; 1613 --coro_nready;
1428 UNLOCK;
1429 } 1614 }
1430 else 1615 else
1431 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 */
1432 1617
1433 if (coro->mainstack && coro->mainstack != main_mainstack) 1618 if (coro->mainstack
1434 { 1619 && coro->mainstack != main_mainstack
1435 struct coro temp; 1620 && coro->slot
1436 1621 && !PL_dirty)
1437 if (coro->flags & CF_RUNNING)
1438 croak ("FATAL: tried to destroy currently running coroutine");
1439
1440 save_perl (aTHX_ &temp);
1441 load_perl (aTHX_ coro);
1442
1443 coro_destruct (aTHX_ coro); 1622 coro_destruct_perl (aTHX_ coro);
1444
1445 load_perl (aTHX_ &temp);
1446
1447 coro->slot = 0;
1448 }
1449 1623
1450 cctx_destroy (coro->cctx); 1624 cctx_destroy (coro->cctx);
1625 SvREFCNT_dec (coro->startcv);
1451 SvREFCNT_dec (coro->args); 1626 SvREFCNT_dec (coro->args);
1627 SvREFCNT_dec (CORO_THROW);
1452 1628
1453 if (coro->next) coro->next->prev = coro->prev; 1629 if (coro->next) coro->next->prev = coro->prev;
1454 if (coro->prev) coro->prev->next = coro->next; 1630 if (coro->prev) coro->prev->next = coro->next;
1455 if (coro == coro_first) coro_first = coro->next; 1631 if (coro == coro_first) coro_first = coro->next;
1456 1632
… …
1494# define MGf_DUP 0 1670# define MGf_DUP 0
1495#endif 1671#endif
1496}; 1672};
1497 1673
1498static void 1674static void
1499prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1675prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1500{ 1676{
1501 ta->prev = SvSTATE (prev_sv); 1677 ta->prev = SvSTATE (prev_sv);
1502 ta->next = SvSTATE (next_sv); 1678 ta->next = SvSTATE (next_sv);
1503 TRANSFER_CHECK (*ta); 1679 TRANSFER_CHECK (*ta);
1504} 1680}
1505 1681
1506static void 1682static void
1507api_transfer (SV *prev_sv, SV *next_sv) 1683api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1508{ 1684{
1509 dTHX;
1510 struct transfer_args ta; 1685 struct coro_transfer_args ta;
1511 1686
1512 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1687 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1513 TRANSFER (ta, 1); 1688 TRANSFER (ta, 1);
1514} 1689}
1515 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
1516/** Coro ********************************************************************/ 1714/** Coro ********************************************************************/
1517 1715
1518static void 1716INLINE void
1519coro_enq (pTHX_ SV *coro_sv) 1717coro_enq (pTHX_ struct coro *coro)
1520{ 1718{
1521 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1719 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1522}
1523 1720
1524static 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 *
1525coro_deq (pTHX) 1729coro_deq (pTHX)
1526{ 1730{
1527 int prio; 1731 int prio;
1528 1732
1529 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1733 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1530 if (AvFILLp (coro_ready [prio]) >= 0) 1734 {
1531 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 }
1532 1744
1533 return 0; 1745 return 0;
1534} 1746}
1535 1747
1536static int 1748static int
1537api_ready (SV *coro_sv) 1749api_ready (pTHX_ SV *coro_sv)
1538{ 1750{
1539 dTHX;
1540 struct coro *coro; 1751 struct coro *coro;
1541 SV *sv_hook; 1752 SV *sv_hook;
1542 void (*xs_hook)(void); 1753 void (*xs_hook)(void);
1543 1754
1544 if (SvROK (coro_sv))
1545 coro_sv = SvRV (coro_sv);
1546
1547 coro = SvSTATE (coro_sv); 1755 coro = SvSTATE (coro_sv);
1548 1756
1549 if (coro->flags & CF_READY) 1757 if (coro->flags & CF_READY)
1550 return 0; 1758 return 0;
1551 1759
1552 coro->flags |= CF_READY; 1760 coro->flags |= CF_READY;
1553 1761
1554 LOCK;
1555
1556 sv_hook = coro_nready ? 0 : coro_readyhook; 1762 sv_hook = coro_nready ? 0 : coro_readyhook;
1557 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1763 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1558 1764
1559 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1765 coro_enq (aTHX_ coro);
1560 ++coro_nready; 1766 ++coro_nready;
1561 1767
1562 UNLOCK;
1563
1564 if (sv_hook) 1768 if (sv_hook)
1565 { 1769 {
1566 dSP; 1770 dSP;
1567 1771
1568 ENTER; 1772 ENTER;
1569 SAVETMPS; 1773 SAVETMPS;
1570 1774
1571 PUSHMARK (SP); 1775 PUSHMARK (SP);
1572 PUTBACK; 1776 PUTBACK;
1573 call_sv (sv_hook, G_DISCARD); 1777 call_sv (sv_hook, G_VOID | G_DISCARD);
1574 SPAGAIN;
1575 1778
1576 FREETMPS; 1779 FREETMPS;
1577 LEAVE; 1780 LEAVE;
1578 } 1781 }
1579 1782
… …
1582 1785
1583 return 1; 1786 return 1;
1584} 1787}
1585 1788
1586static int 1789static int
1587api_is_ready (SV *coro_sv) 1790api_is_ready (pTHX_ SV *coro_sv)
1588{ 1791{
1589 dTHX;
1590
1591 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1792 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1592} 1793}
1593 1794
1795/* expects to own a reference to next->hv */
1594INLINE void 1796INLINE void
1595prepare_schedule (pTHX_ struct transfer_args *ta) 1797prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1596{ 1798{
1597 SV *prev_sv, *next_sv;
1598
1599 for (;;)
1600 {
1601 LOCK;
1602 next_sv = coro_deq (aTHX);
1603
1604 /* nothing to schedule: call the idle handler */
1605 if (expect_false (!next_sv))
1606 {
1607 dSP;
1608 UNLOCK;
1609
1610 ENTER;
1611 SAVETMPS;
1612
1613 PUSHMARK (SP);
1614 PUTBACK;
1615 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1616 SPAGAIN;
1617
1618 FREETMPS;
1619 LEAVE;
1620 continue;
1621 }
1622
1623 ta->next = SvSTATE (next_sv);
1624
1625 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 {
1628 UNLOCK;
1629 SvREFCNT_dec (next_sv);
1630 /* coro_nready has already been taken care of by destroy */
1631 continue;
1632 }
1633
1634 --coro_nready;
1635 UNLOCK;
1636 break;
1637 }
1638
1639 /* free this only after the transfer */
1640 prev_sv = SvRV (coro_current); 1799 SV *prev_sv = SvRV (coro_current);
1800
1641 ta->prev = SvSTATE (prev_sv); 1801 ta->prev = SvSTATE_hv (prev_sv);
1802 ta->next = next;
1803
1642 TRANSFER_CHECK (*ta); 1804 TRANSFER_CHECK (*ta);
1643 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1805
1644 ta->next->flags &= ~CF_READY;
1645 SvRV_set (coro_current, next_sv); 1806 SvRV_set (coro_current, (SV *)next->hv);
1646 1807
1647 LOCK;
1648 free_coro_mortal (aTHX); 1808 free_coro_mortal (aTHX);
1649 coro_mortal = prev_sv; 1809 coro_mortal = prev_sv;
1650 UNLOCK; 1810}
1811
1812static void
1813prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1814{
1815 for (;;)
1816 {
1817 struct coro *next = coro_deq (aTHX);
1818
1819 if (expect_true (next))
1820 {
1821 /* cannot transfer to destroyed coros, skip and look for next */
1822 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1823 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1824 else
1825 {
1826 next->flags &= ~CF_READY;
1827 --coro_nready;
1828
1829 prepare_schedule_to (aTHX_ ta, next);
1830 break;
1831 }
1832 }
1833 else
1834 {
1835 /* nothing to schedule: call the idle handler */
1836 if (SvROK (sv_idle)
1837 && SvOBJECT (SvRV (sv_idle)))
1838 {
1839 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1840 api_ready (aTHX_ SvRV (sv_idle));
1841 --coro_nready;
1842 }
1843 else
1844 {
1845 dSP;
1846
1847 ENTER;
1848 SAVETMPS;
1849
1850 PUSHMARK (SP);
1851 PUTBACK;
1852 call_sv (sv_idle, G_VOID | G_DISCARD);
1853
1854 FREETMPS;
1855 LEAVE;
1856 }
1857 }
1858 }
1651} 1859}
1652 1860
1653INLINE void 1861INLINE void
1654prepare_cede (pTHX_ struct transfer_args *ta) 1862prepare_cede (pTHX_ struct coro_transfer_args *ta)
1655{ 1863{
1656 api_ready (coro_current); 1864 api_ready (aTHX_ coro_current);
1657 prepare_schedule (aTHX_ ta); 1865 prepare_schedule (aTHX_ ta);
1658} 1866}
1659 1867
1660static void 1868INLINE void
1661prepare_cede_notself (pTHX_ struct transfer_args *ta) 1869prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1662{ 1870{
1663 SV *prev = SvRV (coro_current); 1871 SV *prev = SvRV (coro_current);
1664 1872
1665 if (coro_nready) 1873 if (coro_nready)
1666 { 1874 {
1667 prepare_schedule (aTHX_ ta); 1875 prepare_schedule (aTHX_ ta);
1668 api_ready (prev); 1876 api_ready (aTHX_ prev);
1669 } 1877 }
1670 else 1878 else
1671 ta->prev = ta->next = SvSTATE (prev); 1879 prepare_nop (aTHX_ ta);
1672} 1880}
1673 1881
1674static void 1882static void
1675api_schedule (void) 1883api_schedule (pTHX)
1676{ 1884{
1677 dTHX;
1678 struct transfer_args ta; 1885 struct coro_transfer_args ta;
1679 1886
1680 prepare_schedule (aTHX_ &ta); 1887 prepare_schedule (aTHX_ &ta);
1681 TRANSFER (ta, 1); 1888 TRANSFER (ta, 1);
1682} 1889}
1683 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);
1899}
1900
1684static int 1901static int
1685api_cede (void) 1902api_cede (pTHX)
1686{ 1903{
1687 dTHX;
1688 struct transfer_args ta; 1904 struct coro_transfer_args ta;
1689 1905
1690 prepare_cede (aTHX_ &ta); 1906 prepare_cede (aTHX_ &ta);
1691 1907
1692 if (expect_true (ta.prev != ta.next)) 1908 if (expect_true (ta.prev != ta.next))
1693 { 1909 {
… …
1697 else 1913 else
1698 return 0; 1914 return 0;
1699} 1915}
1700 1916
1701static int 1917static int
1702api_cede_notself (void) 1918api_cede_notself (pTHX)
1703{ 1919{
1704 if (coro_nready) 1920 if (coro_nready)
1705 { 1921 {
1706 dTHX;
1707 struct transfer_args ta; 1922 struct coro_transfer_args ta;
1708 1923
1709 prepare_cede_notself (aTHX_ &ta); 1924 prepare_cede_notself (aTHX_ &ta);
1710 TRANSFER (ta, 1); 1925 TRANSFER (ta, 1);
1711 return 1; 1926 return 1;
1712 } 1927 }
1713 else 1928 else
1714 return 0; 1929 return 0;
1715} 1930}
1716 1931
1717static void 1932static void
1718api_trace (SV *coro_sv, int flags) 1933api_trace (pTHX_ SV *coro_sv, int flags)
1719{ 1934{
1720 dTHX;
1721 struct coro *coro = SvSTATE (coro_sv); 1935 struct coro *coro = SvSTATE (coro_sv);
1936
1937 if (coro->flags & CF_RUNNING)
1938 croak ("cannot enable tracing on a running coroutine, caught");
1722 1939
1723 if (flags & CC_TRACE) 1940 if (flags & CC_TRACE)
1724 { 1941 {
1725 if (!coro->cctx) 1942 if (!coro->cctx)
1726 coro->cctx = cctx_new_run (); 1943 coro->cctx = cctx_new_run ();
1727 else if (!(coro->cctx->flags & CC_TRACE)) 1944 else if (!(coro->cctx->flags & CC_TRACE))
1728 croak ("cannot enable tracing on coroutine with custom stack"); 1945 croak ("cannot enable tracing on coroutine with custom stack, caught");
1729 1946
1730 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1947 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1731 } 1948 }
1732 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1949 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1733 { 1950 {
… …
1738 else 1955 else
1739 coro->slot->runops = RUNOPS_DEFAULT; 1956 coro->slot->runops = RUNOPS_DEFAULT;
1740 } 1957 }
1741} 1958}
1742 1959
1743#if 0 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
1744static int 2020static int
1745coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2021slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1746{ 2022{
1747 AV *padlist; 2023 HV *hv = (HV *)SvRV (coro_current);
1748 AV *av = (AV *)mg->mg_obj; 2024 struct coro *coro = (struct coro *)frame->data;
1749 2025
1750 abort (); 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 }
1751 2150
1752 return 0; 2151 return 0;
1753} 2152}
1754 2153
1755static MGVTBL coro_gensub_vtbl = { 2154static void
1756 0, 0, 0, 0, 2155slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1757 coro_gensub_free 2156{
1758}; 2157 SV *cb;
1759#endif 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));
2491}
1760 2492
1761/*****************************************************************************/ 2493/*****************************************************************************/
1762/* PerlIO::cede */ 2494/* PerlIO::cede */
1763 2495
1764typedef struct 2496typedef struct
… …
1792 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2524 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1793 double now = nvtime (); 2525 double now = nvtime ();
1794 2526
1795 if (now >= self->next) 2527 if (now >= self->next)
1796 { 2528 {
1797 api_cede (); 2529 api_cede (aTHX);
1798 self->next = now + self->every; 2530 self->next = now + self->every;
1799 } 2531 }
1800 2532
1801 return PerlIOBuf_flush (aTHX_ f); 2533 return PerlIOBuf_flush (aTHX_ f);
1802} 2534}
… …
1832 PerlIOBuf_get_cnt, 2564 PerlIOBuf_get_cnt,
1833 PerlIOBuf_set_ptrcnt, 2565 PerlIOBuf_set_ptrcnt,
1834}; 2566};
1835 2567
1836/*****************************************************************************/ 2568/*****************************************************************************/
2569/* Coro::Semaphore & Coro::Signal */
1837 2570
1838static const CV *ssl_cv; /* for quick consistency check */
1839
1840static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1841static SV *ssl_arg0;
1842static SV *ssl_arg1;
1843
1844/* this restores the stack in the case we patched the entersub, to */
1845/* recreate the stack frame as perl will on following calls */
1846/* since entersub cleared the stack */
1847static OP * 2571static SV *
1848pp_restore (pTHX) 2572coro_waitarray_new (pTHX_ int count)
1849{ 2573{
2574 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2575 AV *av = newAV ();
2576 SV **ary;
2577
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);
2591
2592 return newRV_noinc ((SV *)av);
2593}
2594
2595/* semaphore */
2596
2597static void
2598coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2599{
2600 SV *count_sv = AvARRAY (av)[0];
2601 IV count = SvIVX (count_sv);
2602
2603 count += adjust;
2604 SvIVX (count_sv) = count;
2605
2606 /* now wake up as many waiters as are expected to lock */
2607 while (count > 0 && AvFILLp (av) > 0)
2608 {
2609 SV *cb;
2610
2611 /* swap first two elements so we can shift a waiter */
2612 AvARRAY (av)[0] = AvARRAY (av)[1];
2613 AvARRAY (av)[1] = count_sv;
2614 cb = av_shift (av);
2615
2616 if (SvOBJECT (cb))
2617 {
2618 api_ready (aTHX_ cb);
2619 --count;
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 }
2629
2630 SvREFCNT_dec (cb);
2631 }
2632}
2633
2634static void
2635coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2636{
2637 /* call $sem->adjust (0) to possibly wake up some other waiters */
2638 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2639}
2640
2641static int
2642slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2643{
2644 AV *av = (AV *)frame->data;
2645 SV *count_sv = AvARRAY (av)[0];
2646
2647 /* if we are about to throw, don't actually acquire the lock, just throw */
2648 if (CORO_THROW)
2649 return 0;
2650 else if (SvIVX (count_sv) > 0)
2651 {
2652 SvSTATE_current->on_destroy = 0;
2653
2654 if (acquire)
2655 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2656 else
2657 coro_semaphore_adjust (aTHX_ av, 0);
2658
2659 return 0;
2660 }
2661 else
2662 {
2663 int i;
2664 /* if we were woken up but can't down, we look through the whole */
2665 /* waiters list and only add us if we aren't in there already */
2666 /* this avoids some degenerate memory usage cases */
2667
2668 for (i = 1; i <= AvFILLp (av); ++i)
2669 if (AvARRAY (av)[i] == SvRV (coro_current))
2670 return 1;
2671
2672 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2673 return 1;
2674 }
2675}
2676
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
2690slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2691{
2692 AV *av = (AV *)SvRV (arg [0]);
2693
2694 if (SvIVX (AvARRAY (av)[0]) > 0)
2695 {
2696 frame->data = (void *)av;
2697 frame->prepare = prepare_nop;
2698 }
2699 else
2700 {
2701 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2702
2703 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2704 frame->prepare = prepare_schedule;
2705
2706 /* to avoid race conditions when a woken-up coro gets terminated */
2707 /* we arrange for a temporary on_destroy that calls adjust (0) */
2708 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2709 }
2710}
2711
2712static void
2713slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2714{
2715 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2716 frame->check = slf_check_semaphore_down;
2717}
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 }
2821}
2822
2823/*****************************************************************************/
2824/* Coro::AIO */
2825
2826#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2827
2828/* helper storage struct */
2829struct io_state
2830{
2831 int errorno;
2832 I32 laststype; /* U16 in 5.10.0 */
2833 int laststatval;
2834 Stat_t statcache;
2835};
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
2847 sv_upgrade (data_sv, SVt_PV);
2848 SvCUR_set (data_sv, sizeof (struct io_state));
2849 SvPOK_only (data_sv);
2850
2851 {
2852 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2853
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 {
1850 dSP; 2905 dSP;
2906 int i;
1851 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
1852 PUSHMARK (SP); 2956 PUSHMARK (SP);
1853 2957
1854 EXTEND (SP, 3); 2958 /* first push all args to the stack */
1855 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2959 EXTEND (SP, items + 1);
1856 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1857 PUSHs ((SV *)CvGV (ssl_cv));
1858 2960
1859 RETURNOP (ssl_restore.op_first); 2961 for (i = 0; i < items; ++i)
1860} 2962 PUSHs (arg [i]);
1861 2963
1862#define OPpENTERSUB_SSL 15 /* the part of op_private entersub hopefully doesn't use */ 2964 /* now push the callback closure */
2965 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1863 2966
1864/* declare prototype */ 2967 /* now call the AIO function - we assume our request is uncancelable */
1865XS(XS_Coro__State__set_stacklevel);
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 */
1872static OP *
1873pp_set_stacklevel (pTHX)
1874{
1875 dSP;
1876 struct transfer_args ta;
1877 SV **arg = PL_stack_base + TOPMARK + 1;
1878 int items = SP - arg; /* args without function object */
1879
1880 /* do a quick consistency check on the "function" object, and if it isn't */
1881 /* for us, divert to the real entersub */
1882 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1883 return PL_ppaddr[OP_ENTERSUB](aTHX);
1884
1885 /* pop args */
1886 SP = PL_stack_base + POPMARK;
1887
1888 if (!(PL_op->op_flags & OPf_STACKED))
1889 {
1890 /* ampersand-form of call, use @_ instead of stack */
1891 AV *av = GvAV (PL_defgv);
1892 arg = AvARRAY (av);
1893 items = AvFILLp (av) + 1;
1894 }
1895
1896 PUTBACK; 2968 PUTBACK;
1897 switch (PL_op->op_private & OPpENTERSUB_SSL) 2969 call_sv ((SV *)req, G_VOID | G_DISCARD);
1898 {
1899 case 0:
1900 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1901 break;
1902
1903 case 1:
1904 if (items != 2)
1905 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1906
1907 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1908 break;
1909
1910 case 2:
1911 prepare_schedule (aTHX_ &ta);
1912 break;
1913
1914 case 3:
1915 prepare_cede (aTHX_ &ta);
1916 break;
1917
1918 case 4:
1919 prepare_cede_notself (aTHX_ &ta);
1920 break;
1921 } 2970 }
1922 2971
1923 TRANSFER (ta, 0); 2972 /* now that the requets is going, we loop toll we have a result */
1924 SPAGAIN; 2973 frame->data = (void *)state;
1925 2974 frame->prepare = prepare_schedule;
1926skip: 2975 frame->check = slf_check_aio_req;
1927 PUTBACK;
1928 SSL_TAIL;
1929 SPAGAIN;
1930 RETURN;
1931} 2976}
1932 2977
1933static void 2978static void
1934coro_ssl_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2979coro_aio_req_xs (pTHX_ CV *cv)
1935{ 2980{
1936 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel)); 2981 dXSARGS;
1937 2982
1938 assert (("FATAL: ssl call with illegal CV value", CvGV (cv))); 2983 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1939 ssl_cv = cv;
1940 2984
1941 /* we patch the op, and then re-run the whole call */ 2985 XSRETURN_EMPTY;
1942 /* we have to put some dummy argument on the stack for this to work */
1943 ssl_restore.op_next = (OP *)&ssl_restore;
1944 ssl_restore.op_type = OP_NULL;
1945 ssl_restore.op_ppaddr = pp_restore;
1946 ssl_restore.op_first = PL_op;
1947
1948 ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1949 ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1950
1951 PL_op->op_ppaddr = pp_set_stacklevel;
1952 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1953
1954 PL_op = (OP *)&ssl_restore;
1955} 2986}
2987
2988/*****************************************************************************/
2989
2990#if CORO_CLONE
2991# include "clone.c"
2992#endif
1956 2993
1957MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2994MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1958 2995
1959PROTOTYPES: DISABLE 2996PROTOTYPES: DISABLE
1960 2997
1961BOOT: 2998BOOT:
1962{ 2999{
1963#ifdef USE_ITHREADS 3000#ifdef USE_ITHREADS
1964 MUTEX_INIT (&coro_lock);
1965# if CORO_PTHREAD 3001# if CORO_PTHREAD
1966 coro_thx = PERL_GET_CONTEXT; 3002 coro_thx = PERL_GET_CONTEXT;
1967# endif 3003# endif
1968#endif 3004#endif
1969 BOOT_PAGESIZE; 3005 BOOT_PAGESIZE;
3006
3007 cctx_current = cctx_new_empty ();
1970 3008
1971 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3009 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1972 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3010 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1973 3011
1974 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;
… …
1990 main_top_env = PL_top_env; 3028 main_top_env = PL_top_env;
1991 3029
1992 while (main_top_env->je_prev) 3030 while (main_top_env->je_prev)
1993 main_top_env = main_top_env->je_prev; 3031 main_top_env = main_top_env->je_prev;
1994 3032
3033 {
3034 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3035
3036 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3037 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3038
3039 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3040 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3041 }
3042
1995 coroapi.ver = CORO_API_VERSION; 3043 coroapi.ver = CORO_API_VERSION;
1996 coroapi.rev = CORO_API_REVISION; 3044 coroapi.rev = CORO_API_REVISION;
3045
1997 coroapi.transfer = api_transfer; 3046 coroapi.transfer = api_transfer;
3047
3048 coroapi.sv_state = SvSTATE_;
3049 coroapi.execute_slf = api_execute_slf;
3050 coroapi.prepare_nop = prepare_nop;
3051 coroapi.prepare_schedule = prepare_schedule;
3052 coroapi.prepare_cede = prepare_cede;
3053 coroapi.prepare_cede_notself = prepare_cede_notself;
1998 3054
1999 { 3055 {
2000 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3056 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2001 3057
2002 if (!svp) croak ("Time::HiRes is required"); 3058 if (!svp) croak ("Time::HiRes is required");
2003 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3059 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2004 3060
2005 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));
2006 } 3065 }
2007 3066
2008 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3067 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2009} 3068}
2010 3069
2011SV * 3070SV *
2012new (char *klass, ...) 3071new (char *klass, ...)
3072 ALIAS:
3073 Coro::new = 1
2013 CODE: 3074 CODE:
2014{ 3075{
2015 struct coro *coro; 3076 struct coro *coro;
2016 MAGIC *mg; 3077 MAGIC *mg;
2017 HV *hv; 3078 HV *hv;
3079 CV *cb;
2018 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 }
2019 3095
2020 Newz (0, coro, 1, struct coro); 3096 Newz (0, coro, 1, struct coro);
2021 coro->args = newAV (); 3097 coro->args = newAV ();
2022 coro->flags = CF_NEW; 3098 coro->flags = CF_NEW;
2023 3099
… …
2028 coro->hv = hv = newHV (); 3104 coro->hv = hv = newHV ();
2029 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);
2030 mg->mg_flags |= MGf_DUP; 3106 mg->mg_flags |= MGf_DUP;
2031 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3107 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2032 3108
3109 if (items > 1)
3110 {
2033 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
2034 for (i = 1; i < items; i++) 3121 for (i = 2; i < items; i++)
2035 av_push (coro->args, newSVsv (ST (i))); 3122 av_push (coro->args, newSVsv (ST (i)));
3123 }
2036} 3124}
2037 OUTPUT: 3125 OUTPUT:
2038 RETVAL 3126 RETVAL
2039 3127
2040void 3128void
2041_set_stacklevel (...) 3129transfer (...)
2042 ALIAS: 3130 PROTOTYPE: $$
2043 Coro::State::transfer = 1 3131 CODE:
2044 Coro::schedule = 2 3132 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2045 Coro::cede = 3
2046 Coro::cede_notself = 4
2047 CODE:
2048 coro_ssl_patch (aTHX_ cv, ix, &ST (0), items);
2049 3133
2050bool 3134bool
2051_destroy (SV *coro_sv) 3135_destroy (SV *coro_sv)
2052 CODE: 3136 CODE:
2053 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3137 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2058_exit (int code) 3142_exit (int code)
2059 PROTOTYPE: $ 3143 PROTOTYPE: $
2060 CODE: 3144 CODE:
2061 _exit (code); 3145 _exit (code);
2062 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
3165
2063int 3166int
2064cctx_stacksize (int new_stacksize = 0) 3167cctx_stacksize (int new_stacksize = 0)
3168 PROTOTYPE: ;$
2065 CODE: 3169 CODE:
2066 RETVAL = cctx_stacksize; 3170 RETVAL = cctx_stacksize;
2067 if (new_stacksize) 3171 if (new_stacksize)
2068 { 3172 {
2069 cctx_stacksize = new_stacksize; 3173 cctx_stacksize = new_stacksize;
… …
2072 OUTPUT: 3176 OUTPUT:
2073 RETVAL 3177 RETVAL
2074 3178
2075int 3179int
2076cctx_max_idle (int max_idle = 0) 3180cctx_max_idle (int max_idle = 0)
3181 PROTOTYPE: ;$
2077 CODE: 3182 CODE:
2078 RETVAL = cctx_max_idle; 3183 RETVAL = cctx_max_idle;
2079 if (max_idle > 1) 3184 if (max_idle > 1)
2080 cctx_max_idle = max_idle; 3185 cctx_max_idle = max_idle;
2081 OUTPUT: 3186 OUTPUT:
2082 RETVAL 3187 RETVAL
2083 3188
2084int 3189int
2085cctx_count () 3190cctx_count ()
3191 PROTOTYPE:
2086 CODE: 3192 CODE:
2087 RETVAL = cctx_count; 3193 RETVAL = cctx_count;
2088 OUTPUT: 3194 OUTPUT:
2089 RETVAL 3195 RETVAL
2090 3196
2091int 3197int
2092cctx_idle () 3198cctx_idle ()
3199 PROTOTYPE:
2093 CODE: 3200 CODE:
2094 RETVAL = cctx_idle; 3201 RETVAL = cctx_idle;
2095 OUTPUT: 3202 OUTPUT:
2096 RETVAL 3203 RETVAL
2097 3204
2098void 3205void
2099list () 3206list ()
3207 PROTOTYPE:
2100 PPCODE: 3208 PPCODE:
2101{ 3209{
2102 struct coro *coro; 3210 struct coro *coro;
2103 for (coro = coro_first; coro; coro = coro->next) 3211 for (coro = coro_first; coro; coro = coro->next)
2104 if (coro->hv) 3212 if (coro->hv)
… …
2111 eval = 1 3219 eval = 1
2112 CODE: 3220 CODE:
2113{ 3221{
2114 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3222 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2115 { 3223 {
2116 struct coro temp; 3224 struct coro *current = SvSTATE_current;
2117 3225
2118 if (!(coro->flags & CF_RUNNING)) 3226 if (current != coro)
2119 { 3227 {
2120 PUTBACK; 3228 PUTBACK;
2121 save_perl (aTHX_ &temp); 3229 save_perl (aTHX_ current);
2122 load_perl (aTHX_ coro); 3230 load_perl (aTHX_ coro);
3231 SPAGAIN;
2123 } 3232 }
2124 3233
2125 {
2126 dSP;
2127 ENTER;
2128 SAVETMPS;
2129 PUTBACK;
2130 PUSHSTACK; 3234 PUSHSTACK;
3235
2131 PUSHMARK (SP); 3236 PUSHMARK (SP);
3237 PUTBACK;
2132 3238
2133 if (ix) 3239 if (ix)
2134 eval_sv (coderef, 0); 3240 eval_sv (coderef, 0);
2135 else 3241 else
2136 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3242 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2137 3243
2138 POPSTACK; 3244 POPSTACK;
2139 SPAGAIN; 3245 SPAGAIN;
2140 FREETMPS;
2141 LEAVE;
2142 PUTBACK;
2143 }
2144 3246
2145 if (!(coro->flags & CF_RUNNING)) 3247 if (current != coro)
2146 { 3248 {
3249 PUTBACK;
2147 save_perl (aTHX_ coro); 3250 save_perl (aTHX_ coro);
2148 load_perl (aTHX_ &temp); 3251 load_perl (aTHX_ current);
2149 SPAGAIN; 3252 SPAGAIN;
2150 } 3253 }
2151 } 3254 }
2152} 3255}
2153 3256
… …
2157 ALIAS: 3260 ALIAS:
2158 is_ready = CF_READY 3261 is_ready = CF_READY
2159 is_running = CF_RUNNING 3262 is_running = CF_RUNNING
2160 is_new = CF_NEW 3263 is_new = CF_NEW
2161 is_destroyed = CF_DESTROYED 3264 is_destroyed = CF_DESTROYED
3265 is_suspended = CF_SUSPENDED
2162 CODE: 3266 CODE:
2163 RETVAL = boolSV (coro->flags & ix); 3267 RETVAL = boolSV (coro->flags & ix);
2164 OUTPUT: 3268 OUTPUT:
2165 RETVAL 3269 RETVAL
2166 3270
2167void 3271void
2168throw (Coro::State self, SV *throw = &PL_sv_undef) 3272throw (Coro::State self, SV *throw = &PL_sv_undef)
2169 PROTOTYPE: $;$ 3273 PROTOTYPE: $;$
2170 CODE: 3274 CODE:
3275{
3276 struct coro *current = SvSTATE_current;
3277 SV **throwp = self == current ? &CORO_THROW : &self->except;
2171 SvREFCNT_dec (self->throw); 3278 SvREFCNT_dec (*throwp);
3279 SvGETMAGIC (throw);
2172 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3280 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3281}
2173 3282
2174void 3283void
2175api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3284api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3285 PROTOTYPE: $;$
3286 C_ARGS: aTHX_ coro, flags
2176 3287
2177SV * 3288SV *
2178has_cctx (Coro::State coro) 3289has_cctx (Coro::State coro)
2179 PROTOTYPE: $ 3290 PROTOTYPE: $
2180 CODE: 3291 CODE:
2181 RETVAL = boolSV (!!coro->cctx); 3292 /* maybe manage the running flag differently */
3293 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2182 OUTPUT: 3294 OUTPUT:
2183 RETVAL 3295 RETVAL
2184 3296
2185int 3297int
2186is_traced (Coro::State coro) 3298is_traced (Coro::State coro)
… …
2204 OUTPUT: 3316 OUTPUT:
2205 RETVAL 3317 RETVAL
2206 3318
2207void 3319void
2208force_cctx () 3320force_cctx ()
3321 PROTOTYPE:
2209 CODE: 3322 CODE:
2210 struct coro *coro = SvSTATE (coro_current);
2211 coro->cctx->idle_sp = 0; 3323 cctx_current->idle_sp = 0;
2212 3324
2213void 3325void
2214swap_defsv (Coro::State self) 3326swap_defsv (Coro::State self)
2215 PROTOTYPE: $ 3327 PROTOTYPE: $
2216 ALIAS: 3328 ALIAS:
2217 swap_defav = 1 3329 swap_defav = 1
2218 CODE: 3330 CODE:
2219 if (!self->slot) 3331 if (!self->slot)
2220 croak ("cannot swap state with coroutine that has no saved state"); 3332 croak ("cannot swap state with coroutine that has no saved state,");
2221 else 3333 else
2222 { 3334 {
2223 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3335 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2224 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3336 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2225 3337
2226 SV *tmp = *src; *src = *dst; *dst = tmp; 3338 SV *tmp = *src; *src = *dst; *dst = tmp;
2227 } 3339 }
2228 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
2229MODULE = Coro::State PACKAGE = Coro 3385MODULE = Coro::State PACKAGE = Coro
2230 3386
2231BOOT: 3387BOOT:
2232{ 3388{
2233 int i;
2234
2235 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2236 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3389 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2237 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3390 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2238 3391 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3392 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2239 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3393 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2240 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);
2241 3403
2242 coro_stash = gv_stashpv ("Coro", TRUE); 3404 coro_stash = gv_stashpv ("Coro", TRUE);
2243 3405
2244 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3406 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2245 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3407 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2246 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3408 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2247 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3409 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2248 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3410 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2249 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3411 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2250
2251 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2252 coro_ready[i] = newAV ();
2253 3412
2254 { 3413 {
2255 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3414 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2256 3415
2257 coroapi.schedule = api_schedule; 3416 coroapi.schedule = api_schedule;
3417 coroapi.schedule_to = api_schedule_to;
2258 coroapi.cede = api_cede; 3418 coroapi.cede = api_cede;
2259 coroapi.cede_notself = api_cede_notself; 3419 coroapi.cede_notself = api_cede_notself;
2260 coroapi.ready = api_ready; 3420 coroapi.ready = api_ready;
2261 coroapi.is_ready = api_is_ready; 3421 coroapi.is_ready = api_is_ready;
2262 coroapi.nready = &coro_nready; 3422 coroapi.nready = coro_nready;
2263 coroapi.current = coro_current; 3423 coroapi.current = coro_current;
2264 3424
2265 GCoroAPI = &coroapi; 3425 /*GCoroAPI = &coroapi;*/
2266 sv_setiv (sv, (IV)&coroapi); 3426 sv_setiv (sv, (IV)&coroapi);
2267 SvREADONLY_on (sv); 3427 SvREADONLY_on (sv);
2268 } 3428 }
2269} 3429}
3430
3431void
3432terminate (...)
3433 CODE:
3434 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3435
3436void
3437schedule (...)
3438 CODE:
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);
3450
3451void
3452cede (...)
3453 CODE:
3454 CORO_EXECUTE_SLF_XS (slf_init_cede);
3455
3456void
3457cede_notself (...)
3458 CODE:
3459 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2270 3460
2271void 3461void
2272_set_current (SV *current) 3462_set_current (SV *current)
2273 PROTOTYPE: $ 3463 PROTOTYPE: $
2274 CODE: 3464 CODE:
… …
2277 3467
2278void 3468void
2279_set_readyhook (SV *hook) 3469_set_readyhook (SV *hook)
2280 PROTOTYPE: $ 3470 PROTOTYPE: $
2281 CODE: 3471 CODE:
2282 LOCK;
2283 SvREFCNT_dec (coro_readyhook); 3472 SvREFCNT_dec (coro_readyhook);
3473 SvGETMAGIC (hook);
2284 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3474 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2285 UNLOCK;
2286 3475
2287int 3476int
2288prio (Coro::State coro, int newprio = 0) 3477prio (Coro::State coro, int newprio = 0)
3478 PROTOTYPE: $;$
2289 ALIAS: 3479 ALIAS:
2290 nice = 1 3480 nice = 1
2291 CODE: 3481 CODE:
2292{ 3482{
2293 RETVAL = coro->prio; 3483 RETVAL = coro->prio;
… …
2295 if (items > 1) 3485 if (items > 1)
2296 { 3486 {
2297 if (ix) 3487 if (ix)
2298 newprio = coro->prio - newprio; 3488 newprio = coro->prio - newprio;
2299 3489
2300 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3490 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2301 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3491 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2302 3492
2303 coro->prio = newprio; 3493 coro->prio = newprio;
2304 } 3494 }
2305} 3495}
2306 OUTPUT: 3496 OUTPUT:
… …
2308 3498
2309SV * 3499SV *
2310ready (SV *self) 3500ready (SV *self)
2311 PROTOTYPE: $ 3501 PROTOTYPE: $
2312 CODE: 3502 CODE:
2313 RETVAL = boolSV (api_ready (self)); 3503 RETVAL = boolSV (api_ready (aTHX_ self));
2314 OUTPUT: 3504 OUTPUT:
2315 RETVAL 3505 RETVAL
2316 3506
2317int 3507int
2318nready (...) 3508nready (...)
… …
2320 CODE: 3510 CODE:
2321 RETVAL = coro_nready; 3511 RETVAL = coro_nready;
2322 OUTPUT: 3512 OUTPUT:
2323 RETVAL 3513 RETVAL
2324 3514
2325# for async_pool speedup
2326void 3515void
2327_pool_1 (SV *cb) 3516suspend (Coro::State self)
3517 PROTOTYPE: $
2328 CODE: 3518 CODE:
2329{ 3519 self->flags |= CF_SUSPENDED;
2330 struct coro *coro = SvSTATE (coro_current);
2331 HV *hv = (HV *)SvRV (coro_current);
2332 AV *defav = GvAV (PL_defgv);
2333 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2334 AV *invoke_av;
2335 int i, len;
2336 3520
2337 if (!invoke) 3521void
3522resume (Coro::State self)
3523 PROTOTYPE: $
3524 CODE:
3525 self->flags &= ~CF_SUSPENDED;
3526
3527void
3528_pool_handler (...)
3529 CODE:
3530 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3531
3532void
3533async_pool (SV *cv, ...)
3534 PROTOTYPE: &@
3535 PPCODE:
3536{
3537 HV *hv = (HV *)av_pop (av_async_pool);
3538 AV *av = newAV ();
3539 SV *cb = ST (0);
3540 int i;
3541
3542 av_extend (av, items - 2);
3543 for (i = 1; i < items; ++i)
3544 av_push (av, SvREFCNT_inc_NN (ST (i)));
3545
3546 if ((SV *)hv == &PL_sv_undef)
2338 { 3547 {
2339 SV *old = PL_diehook; 3548 PUSHMARK (SP);
2340 PL_diehook = 0; 3549 EXTEND (SP, 2);
2341 SvREFCNT_dec (old); 3550 PUSHs (sv_Coro);
2342 croak ("\3async_pool terminate\2\n"); 3551 PUSHs ((SV *)cv_pool_handler);
3552 PUTBACK;
3553 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3554 SPAGAIN;
3555
3556 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2343 } 3557 }
2344 3558
2345 SvREFCNT_dec (coro->saved_deffh);
2346 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2347
2348 hv_store (hv, "desc", sizeof ("desc") - 1,
2349 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2350
2351 invoke_av = (AV *)SvRV (invoke);
2352 len = av_len (invoke_av);
2353
2354 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2355
2356 if (len > 0)
2357 { 3559 {
2358 av_fill (defav, len - 1); 3560 struct coro *coro = SvSTATE_hv (hv);
2359 for (i = 0; i < len; ++i) 3561
2360 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3562 assert (!coro->invoke_cb);
3563 assert (!coro->invoke_av);
3564 coro->invoke_cb = SvREFCNT_inc (cb);
3565 coro->invoke_av = av;
2361 } 3566 }
2362 3567
3568 api_ready (aTHX_ (SV *)hv);
3569
3570 if (GIMME_V != G_VOID)
3571 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3572 else
2363 SvREFCNT_dec (invoke); 3573 SvREFCNT_dec (hv);
2364} 3574}
2365 3575
2366void 3576SV *
2367_pool_2 (SV *cb) 3577rouse_cb ()
3578 PROTOTYPE:
2368 CODE: 3579 CODE:
2369{ 3580 RETVAL = coro_new_rouse_cb (aTHX);
2370 struct coro *coro = SvSTATE (coro_current);
2371
2372 sv_setsv (cb, &PL_sv_undef);
2373
2374 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2375 coro->saved_deffh = 0;
2376
2377 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2378 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2379 {
2380 SV *old = PL_diehook;
2381 PL_diehook = 0;
2382 SvREFCNT_dec (old);
2383 croak ("\3async_pool terminate\2\n");
2384 }
2385
2386 av_clear (GvAV (PL_defgv));
2387 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2388 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2389
2390 coro->prio = 0;
2391
2392 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2393 api_trace (coro_current, 0);
2394
2395 av_push (av_async_pool, newSVsv (coro_current));
2396}
2397
2398#if 0
2399
2400void
2401_generator_call (...)
2402 PROTOTYPE: @
2403 PPCODE:
2404 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2405 xxxx
2406 abort ();
2407
2408SV *
2409gensub (SV *sub, ...)
2410 PROTOTYPE: &;@
2411 CODE:
2412{
2413 struct coro *coro;
2414 MAGIC *mg;
2415 CV *xcv;
2416 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2417 int i;
2418
2419 CvGV (ncv) = CvGV (cv);
2420 CvFILE (ncv) = CvFILE (cv);
2421
2422 Newz (0, coro, 1, struct coro);
2423 coro->args = newAV ();
2424 coro->flags = CF_NEW;
2425
2426 av_extend (coro->args, items - 1);
2427 for (i = 1; i < items; i++)
2428 av_push (coro->args, newSVsv (ST (i)));
2429
2430 CvISXSUB_on (ncv);
2431 CvXSUBANY (ncv).any_ptr = (void *)coro;
2432
2433 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2434
2435 CvXSUB (ncv) = CvXSUB (xcv);
2436 CvANON_on (ncv);
2437
2438 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2439 RETVAL = newRV_noinc ((SV *)ncv);
2440}
2441 OUTPUT: 3581 OUTPUT:
2442 RETVAL 3582 RETVAL
2443 3583
2444#endif
2445
2446
2447MODULE = Coro::State PACKAGE = Coro::AIO
2448
2449void 3584void
2450_get_state (SV *self) 3585rouse_wait (...)
3586 PROTOTYPE: ;$
2451 PPCODE: 3587 PPCODE:
2452{ 3588 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2453 AV *defav = GvAV (PL_defgv);
2454 AV *av = newAV ();
2455 int i;
2456 SV *data_sv = newSV (sizeof (struct io_state));
2457 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2458 SvCUR_set (data_sv, sizeof (struct io_state));
2459 SvPOK_only (data_sv);
2460
2461 data->errorno = errno;
2462 data->laststype = PL_laststype;
2463 data->laststatval = PL_laststatval;
2464 data->statcache = PL_statcache;
2465
2466 av_extend (av, AvFILLp (defav) + 1 + 1);
2467
2468 for (i = 0; i <= AvFILLp (defav); ++i)
2469 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2470
2471 av_push (av, data_sv);
2472
2473 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2474
2475 api_ready (self);
2476}
2477 3589
2478void 3590void
2479_set_state (SV *state) 3591on_enter (SV *block)
3592 ALIAS:
3593 on_leave = 1
2480 PROTOTYPE: $ 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 */
3613}
3614
3615
3616MODULE = Coro::State PACKAGE = PerlIO::cede
3617
3618BOOT:
3619 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3620
3621
3622MODULE = Coro::State PACKAGE = Coro::Semaphore
3623
3624SV *
3625new (SV *klass, SV *count = 0)
3626 CODE:
3627{
3628 int semcnt = 1;
3629
3630 if (count)
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 );
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);
3651 OUTPUT:
3652 RETVAL
3653
3654SV *
3655count (SV *self)
3656 CODE:
3657 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3658 OUTPUT:
3659 RETVAL
3660
3661void
3662up (SV *self, int adjust = 1)
3663 ALIAS:
3664 adjust = 1
3665 CODE:
3666 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3667
3668void
3669down (...)
3670 CODE:
3671 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3672
3673void
3674wait (...)
3675 CODE:
3676 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3677
3678void
3679try (SV *self)
3680 PPCODE:
3681{
3682 AV *av = (AV *)SvRV (self);
3683 SV *count_sv = AvARRAY (av)[0];
3684 IV count = SvIVX (count_sv);
3685
3686 if (count > 0)
3687 {
3688 --count;
3689 SvIVX (count_sv) = count;
3690 XSRETURN_YES;
3691 }
3692 else
3693 XSRETURN_NO;
3694}
3695
3696void
3697waiters (SV *self)
3698 PPCODE:
3699{
3700 AV *av = (AV *)SvRV (self);
3701 int wcount = AvFILLp (av) + 1 - 1;
3702
3703 if (GIMME_V == G_SCALAR)
3704 XPUSHs (sv_2mortal (newSViv (wcount)));
3705 else
3706 {
3707 int i;
3708 EXTEND (SP, wcount);
3709 for (i = 1; i <= wcount; ++i)
3710 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3711 }
3712}
3713
3714MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3715
3716void
3717_may_delete (SV *sem, int count, int extra_refs)
2481 PPCODE: 3718 PPCODE:
2482{ 3719{
2483 AV *av = (AV *)SvRV (state); 3720 AV *av = (AV *)SvRV (sem);
2484 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2485 int i;
2486 3721
2487 errno = data->errorno; 3722 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2488 PL_laststype = data->laststype; 3723 && AvFILLp (av) == 0 /* no waiters, just count */
2489 PL_laststatval = data->laststatval; 3724 && SvIV (AvARRAY (av)[0]) == count)
2490 PL_statcache = data->statcache; 3725 XSRETURN_YES;
2491 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
2492 EXTEND (SP, AvFILLp (av)); 3761 if (AvFILLp (av))
2493 for (i = 0; i < AvFILLp (av); ++i) 3762 coro_signal_wake (aTHX_ av, 1);
2494 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3763 else
3764 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2495} 3765}
3766
3767IV
3768awaited (SV *self)
3769 CODE:
3770 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3771 OUTPUT:
3772 RETVAL
2496 3773
2497 3774
2498MODULE = Coro::State PACKAGE = Coro::AnyEvent 3775MODULE = Coro::State PACKAGE = Coro::AnyEvent
2499 3776
2500BOOT: 3777BOOT:
2501 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3778 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2502 3779
2503SV * 3780void
2504_schedule (...) 3781_schedule (...)
2505 PROTOTYPE: @
2506 CODE: 3782 CODE:
2507{ 3783{
2508 static int incede; 3784 static int incede;
2509 3785
2510 api_cede_notself (); 3786 api_cede_notself (aTHX);
2511 3787
2512 ++incede; 3788 ++incede;
2513 while (coro_nready >= incede && api_cede ()) 3789 while (coro_nready >= incede && api_cede (aTHX))
2514 ; 3790 ;
2515 3791
2516 sv_setsv (sv_activity, &PL_sv_undef); 3792 sv_setsv (sv_activity, &PL_sv_undef);
2517 if (coro_nready >= incede) 3793 if (coro_nready >= incede)
2518 { 3794 {
2519 PUSHMARK (SP); 3795 PUSHMARK (SP);
2520 PUTBACK; 3796 PUTBACK;
2521 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3797 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2522 SPAGAIN;
2523 } 3798 }
2524 3799
2525 --incede; 3800 --incede;
2526} 3801}
2527 3802
2528 3803
2529MODULE = Coro::State PACKAGE = PerlIO::cede 3804MODULE = Coro::State PACKAGE = Coro::AIO
2530 3805
2531BOOT: 3806void
2532 PerlIO_define_layer (aTHX_ &PerlIO_cede); 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}
2533 3816

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