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Comparing Coro/Coro/State.xs (file contents):
Revision 1.268 by root, Fri Nov 14 06:41:41 2008 UTC vs.
Revision 1.362 by root, Wed Jul 1 07:58:45 2009 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
100 109
101/* 5.8.7 */ 110/* 5.8.7 */
102#ifndef SvRV_set 111#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 113#endif
… …
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
121#if __GNUC__ >= 4 130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 132# define STACKLEVEL __builtin_frame_address (0)
123#else 133#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel)
125#endif 136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT PL_dirty
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr), (value))
132# define INLINE static inline 143# define INLINE static inline
133#else 144#else
134# define attribute(x) 145# define attribute(x)
135# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
136# define INLINE static 147# define INLINE static
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 159# if CORO_PTHREAD
152static void *coro_thx; 160static void *coro_thx;
153# endif 161# endif
162#endif
154 163
155#else 164#ifdef __linux
156 165# include <time.h> /* for timespec */
157# define LOCK (void)0 166# include <syscall.h> /* for SYS_* */
158# define UNLOCK (void)0 167# ifdef SYS_clock_gettime
159 168# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
169# define CORO_CLOCK_MONOTONIC 1
170# define CORO_CLOCK_THREAD_CPUTIME_ID 3
160#endif 171# endif
161 172#endif
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 173
177static double (*nvtime)(); /* so why doesn't it take void? */ 174static double (*nvtime)(); /* so why doesn't it take void? */
175static void (*u2time)(pTHX_ UV ret[2]);
176
177/* we hijack an hopefully unused CV flag for our purposes */
178#define CVf_SLF 0x4000
179static OP *pp_slf (pTHX);
178 180
179static U32 cctx_gen; 181static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 182static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 183static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 184static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 185static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 186static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 187static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 188
188struct transfer_args 189static AV *av_destroy; /* destruction queue */
189{ 190static SV *sv_manager; /* the manager coro */
190 struct coro *prev, *next; 191static SV *sv_idle; /* $Coro::idle */
191};
192 192
193static GV *irsgv; /* $/ */ 193static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 194static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 195static SV *rv_diehook;
196static SV *rv_warnhook; 196static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */ 197static HV *hv_sig; /* %SIG */
198 198
199/* async_pool helper stuff */ 199/* async_pool helper stuff */
200static SV *sv_pool_rss; 200static SV *sv_pool_rss;
201static SV *sv_pool_size; 201static SV *sv_pool_size;
202static SV *sv_async_pool_idle; /* description string */
202static 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;
203 207
204/* Coro::AnyEvent */ 208/* Coro::AnyEvent */
205static 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;
206 216
207static struct coro_cctx *cctx_first; 217static struct coro_cctx *cctx_first;
208static int cctx_count, cctx_idle; 218static int cctx_count, cctx_idle;
209 219
210enum { 220enum {
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 225 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 226 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 227};
218 228
219/* this is a structure representing a c-level coroutine */ 229/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 230typedef struct coro_cctx
231{
221 struct coro_cctx *next; 232 struct coro_cctx *next;
222 233
223 /* the stack */ 234 /* the stack */
224 void *sptr; 235 void *sptr;
225 size_t ssize; 236 size_t ssize;
… …
235 int valgrind_id; 246 int valgrind_id;
236#endif 247#endif
237 unsigned char flags; 248 unsigned char flags;
238} coro_cctx; 249} coro_cctx;
239 250
251coro_cctx *cctx_current; /* the currently running cctx */
252
253/*****************************************************************************/
254
240enum { 255enum {
241 CF_RUNNING = 0x0001, /* coroutine is running */ 256 CF_RUNNING = 0x0001, /* coroutine is running */
242 CF_READY = 0x0002, /* coroutine is ready */ 257 CF_READY = 0x0002, /* coroutine is ready */
243 CF_NEW = 0x0004, /* has never been switched to */ 258 CF_NEW = 0x0004, /* has never been switched to */
244 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 */
245}; 261};
246 262
247/* 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 */
248typedef struct { 264typedef struct
265{
249 SV *defsv; 266 SV *defsv;
250 AV *defav; 267 AV *defav;
251 SV *errsv; 268 SV *errsv;
252 SV *irsgv; 269 SV *irsgv;
270 HV *hinthv;
253#define VAR(name,type) type name; 271#define VAR(name,type) type name;
254# include "state.h" 272# include "state.h"
255#undef VAR 273#undef VAR
256} perl_slots; 274} perl_slots;
257 275
258#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))
259 277
260/* this is a structure representing a perl-level coroutine */ 278/* this is a structure representing a perl-level coroutine */
261struct coro { 279struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 280 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 281 coro_cctx *cctx;
264 282
265 /* process data */ 283 /* ready queue */
284 struct coro *next_ready;
285
286 /* state data */
287 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 288 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 289 perl_slots *slot; /* basically the saved sp */
268 290
291 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 292 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 293 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 294 int flags; /* CF_ flags */
272 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);
273 297
274 /* statistics */ 298 /* statistics */
275 int usecount; /* number of transfers to this coro */ 299 int usecount; /* number of transfers to this coro */
276 300
277 /* coro process data */ 301 /* coro process data */
278 int prio; 302 int prio;
279 SV *throw; /* exception to be thrown */ 303 SV *except; /* exception to be thrown */
304 SV *rouse_cb;
280 305
281 /* async_pool */ 306 /* async_pool */
282 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;
283 317
284 /* linked list */ 318 /* linked list */
285 struct coro *next, *prev; 319 struct coro *next, *prev;
286}; 320};
287 321
288typedef struct coro *Coro__State; 322typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 323typedef struct coro *Coro__State_or_hashref;
290 324
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
291/** Coro ********************************************************************/ 330/** Coro ********************************************************************/
292 331
293#define PRIO_MAX 3 332#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 333#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 334#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 335#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 336#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 337#define CORO_PRIO_MIN -4
299 338
300/* for Coro.pm */ 339/* for Coro.pm */
301static SV *coro_current; 340static SV *coro_current;
302static SV *coro_readyhook; 341static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 342static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
304static int coro_nready; 343static CV *cv_coro_run, *cv_coro_terminate;
305static struct coro *coro_first; 344static struct coro *coro_first;
345#define coro_nready coroapi.nready
306 346
307/** lowlevel stuff **********************************************************/ 347/** lowlevel stuff **********************************************************/
308 348
309static SV * 349static SV *
310coro_get_sv (pTHX_ const char *name, int create) 350coro_get_sv (pTHX_ const char *name, int create)
… …
334 get_hv (name, create); 374 get_hv (name, create);
335#endif 375#endif
336 return get_hv (name, create); 376 return get_hv (name, create);
337} 377}
338 378
379/* may croak */
380INLINE CV *
381coro_sv_2cv (pTHX_ SV *sv)
382{
383 HV *st;
384 GV *gvp;
385 CV *cv = sv_2cv (sv, &st, &gvp, 0);
386
387 if (!cv)
388 croak ("code reference expected");
389
390 return cv;
391}
392
393INLINE void
394coro_times_update ()
395{
396#ifdef coro_clock_gettime
397 struct timespec ts;
398
399 ts.tv_sec = ts.tv_nsec = 0;
400 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
401 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
402
403 ts.tv_sec = ts.tv_nsec = 0;
404 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
405 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
406#else
407 dTHX;
408 UV tv[2];
409
410 u2time (aTHX_ tv);
411 time_real [0] = tv [0];
412 time_real [1] = tv [1] * 1000;
413#endif
414}
415
416INLINE void
417coro_times_add (struct coro *c)
418{
419 c->t_real [1] += time_real [1];
420 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
421 c->t_real [0] += time_real [0];
422
423 c->t_cpu [1] += time_cpu [1];
424 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
425 c->t_cpu [0] += time_cpu [0];
426}
427
428INLINE void
429coro_times_sub (struct coro *c)
430{
431 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
432 c->t_real [1] -= time_real [1];
433 c->t_real [0] -= time_real [0];
434
435 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
436 c->t_cpu [1] -= time_cpu [1];
437 c->t_cpu [0] -= time_cpu [0];
438}
439
440/*****************************************************************************/
441/* magic glue */
442
443#define CORO_MAGIC_type_cv 26
444#define CORO_MAGIC_type_state PERL_MAGIC_ext
445
446#define CORO_MAGIC_NN(sv, type) \
447 (expect_true (SvMAGIC (sv)->mg_type == type) \
448 ? SvMAGIC (sv) \
449 : mg_find (sv, type))
450
451#define CORO_MAGIC(sv, type) \
452 (expect_true (SvMAGIC (sv)) \
453 ? CORO_MAGIC_NN (sv, type) \
454 : 0)
455
456#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
457#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
458
459INLINE struct coro *
460SvSTATE_ (pTHX_ SV *coro)
461{
462 HV *stash;
463 MAGIC *mg;
464
465 if (SvROK (coro))
466 coro = SvRV (coro);
467
468 if (expect_false (SvTYPE (coro) != SVt_PVHV))
469 croak ("Coro::State object required");
470
471 stash = SvSTASH (coro);
472 if (expect_false (stash != coro_stash && stash != coro_state_stash))
473 {
474 /* very slow, but rare, check */
475 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
476 croak ("Coro::State object required");
477 }
478
479 mg = CORO_MAGIC_state (coro);
480 return (struct coro *)mg->mg_ptr;
481}
482
483#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
484
485/* faster than SvSTATE, but expects a coroutine hv */
486#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
487#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
488
489/*****************************************************************************/
490/* padlist management and caching */
491
339static AV * 492static AV *
340coro_clone_padlist (pTHX_ CV *cv) 493coro_derive_padlist (pTHX_ CV *cv)
341{ 494{
342 AV *padlist = CvPADLIST (cv); 495 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 496 AV *newpadlist, *newpad;
344 497
345 newpadlist = newAV (); 498 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 503 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 504#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 505 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 506 --AvFILLp (padlist);
354 507
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 508 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 509 av_store (newpadlist, 1, (SV *)newpad);
357 510
358 return newpadlist; 511 return newpadlist;
359} 512}
360 513
361static void 514static void
362free_padlist (pTHX_ AV *padlist) 515free_padlist (pTHX_ AV *padlist)
363{ 516{
364 /* may be during global destruction */ 517 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 518 if (!IN_DESTRUCT)
366 { 519 {
367 I32 i = AvFILLp (padlist); 520 I32 i = AvFILLp (padlist);
368 while (i >= 0) 521
522 while (i > 0) /* special-case index 0 */
369 { 523 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 524 /* we try to be extra-careful here */
371 if (svp) 525 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 526 I32 j = AvFILLp (av);
373 SV *sv; 527
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 528 while (j >= 0)
529 SvREFCNT_dec (AvARRAY (av)[j--]);
530
531 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 532 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 533 }
380 534
535 SvREFCNT_dec (AvARRAY (padlist)[0]);
536
537 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 538 SvREFCNT_dec ((SV*)padlist);
382 } 539 }
383} 540}
384 541
385static int 542static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 543coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 544{
388 AV *padlist; 545 AV *padlist;
389 AV *av = (AV *)mg->mg_obj; 546 AV *av = (AV *)mg->mg_obj;
547
548 /* perl manages to free our internal AV and _then_ call us */
549 if (IN_DESTRUCT)
550 return 0;
390 551
391 /* casting is fun. */ 552 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 553 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 554 free_padlist (aTHX_ padlist);
394 555
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 556 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 557
397 return 0; 558 return 0;
398} 559}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 560
403static MGVTBL coro_cv_vtbl = { 561static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 562 0, 0, 0, 0,
405 coro_cv_free 563 coro_cv_free
406}; 564};
407
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443 565
444/* the next two functions merely cache the padlists */ 566/* the next two functions merely cache the padlists */
445static void 567static void
446get_padlist (pTHX_ CV *cv) 568get_padlist (pTHX_ CV *cv)
447{ 569{
… …
453 else 575 else
454 { 576 {
455#if CORO_PREFER_PERL_FUNCTIONS 577#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 578 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 579 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 580 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 581 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 582 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 583 SvREFCNT_dec (cp);
462#else 584#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 585 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 586#endif
465 } 587 }
466} 588}
467 589
468static void 590static void
… …
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 597 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 598
477 av = (AV *)mg->mg_obj; 599 av = (AV *)mg->mg_obj;
478 600
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 601 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 602 av_extend (av, AvFILLp (av) + 1);
481 603
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 604 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 605}
484 606
485/** load & save, init *******************************************************/ 607/** load & save, init *******************************************************/
608
609static void
610on_enterleave_call (pTHX_ SV *cb);
486 611
487static void 612static void
488load_perl (pTHX_ Coro__State c) 613load_perl (pTHX_ Coro__State c)
489{ 614{
490 perl_slots *slot = c->slot; 615 perl_slots *slot = c->slot;
491 c->slot = 0; 616 c->slot = 0;
492 617
493 PL_mainstack = c->mainstack; 618 PL_mainstack = c->mainstack;
494 619
495 GvSV (PL_defgv) = slot->defsv; 620 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav; 621 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv; 622 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv; 623 GvSV (irsgv) = slot->irsgv;
624 GvHV (PL_hintgv) = slot->hinthv;
499 625
500 #define VAR(name,type) PL_ ## name = slot->name; 626 #define VAR(name,type) PL_ ## name = slot->name;
501 # include "state.h" 627 # include "state.h"
502 #undef VAR 628 #undef VAR
503 629
… …
514 CvPADLIST (cv) = (AV *)POPs; 640 CvPADLIST (cv) = (AV *)POPs;
515 } 641 }
516 642
517 PUTBACK; 643 PUTBACK;
518 } 644 }
645
646 slf_frame = c->slf_frame;
647 CORO_THROW = c->except;
648
649 if (expect_false (enable_times))
650 {
651 if (expect_false (!times_valid))
652 coro_times_update ();
653
654 coro_times_sub (c);
655 }
656
657 if (expect_false (c->on_enter))
658 {
659 int i;
660
661 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
662 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
663 }
519} 664}
520 665
521static void 666static void
522save_perl (pTHX_ Coro__State c) 667save_perl (pTHX_ Coro__State c)
523{ 668{
669 if (expect_false (c->on_leave))
670 {
671 int i;
672
673 for (i = AvFILLp (c->on_leave); i >= 0; --i)
674 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
675 }
676
677 times_valid = 0;
678
679 if (expect_false (enable_times))
680 {
681 coro_times_update (); times_valid = 1;
682 coro_times_add (c);
683 }
684
685 c->except = CORO_THROW;
686 c->slf_frame = slf_frame;
687
524 { 688 {
525 dSP; 689 dSP;
526 I32 cxix = cxstack_ix; 690 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 691 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 692 PERL_SI *top_si = PL_curstackinfo;
… …
538 { 702 {
539 while (expect_true (cxix >= 0)) 703 while (expect_true (cxix >= 0))
540 { 704 {
541 PERL_CONTEXT *cx = &ccstk[cxix--]; 705 PERL_CONTEXT *cx = &ccstk[cxix--];
542 706
543 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 707 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
544 { 708 {
545 CV *cv = cx->blk_sub.cv; 709 CV *cv = cx->blk_sub.cv;
546 710
547 if (expect_true (CvDEPTH (cv))) 711 if (expect_true (CvDEPTH (cv)))
548 { 712 {
… …
572 /* we manually unroll here, as usually 2 slots is enough */ 736 /* we manually unroll here, as usually 2 slots is enough */
573 if (SLOT_COUNT >= 1) CXINC; 737 if (SLOT_COUNT >= 1) CXINC;
574 if (SLOT_COUNT >= 2) CXINC; 738 if (SLOT_COUNT >= 2) CXINC;
575 if (SLOT_COUNT >= 3) CXINC; 739 if (SLOT_COUNT >= 3) CXINC;
576 { 740 {
577 int i; 741 unsigned int i;
578 for (i = 3; i < SLOT_COUNT; ++i) 742 for (i = 3; i < SLOT_COUNT; ++i)
579 CXINC; 743 CXINC;
580 } 744 }
581 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 745 cxstack_ix -= SLOT_COUNT; /* undo allocation */
582 746
583 c->mainstack = PL_mainstack; 747 c->mainstack = PL_mainstack;
584 748
585 { 749 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 750 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587 751
588 slot->defav = GvAV (PL_defgv); 752 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV; 753 slot->defsv = DEFSV;
590 slot->errsv = ERRSV; 754 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv); 755 slot->irsgv = GvSV (irsgv);
756 slot->hinthv = GvHV (PL_hintgv);
592 757
593 #define VAR(name,type) slot->name = PL_ ## name; 758 #define VAR(name,type) slot->name = PL_ ## name;
594 # include "state.h" 759 # include "state.h"
595 #undef VAR 760 #undef VAR
596 } 761 }
597} 762}
598 763
599/* 764/*
600 * allocate various perl stacks. This is an exact copy 765 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 766 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 767 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 768 * not usually need a lot of stackspace.
604 */ 769 */
605#if CORO_PREFER_PERL_FUNCTIONS 770#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 771# define coro_init_stacks(thx) init_stacks ()
607#else 772#else
608static void 773static void
609coro_init_stacks (pTHX) 774coro_init_stacks (pTHX)
610{ 775{
611 PL_curstackinfo = new_stackinfo(32, 8); 776 PL_curstackinfo = new_stackinfo(32, 8);
… …
674#if !PERL_VERSION_ATLEAST (5,10,0) 839#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 840 Safefree (PL_retstack);
676#endif 841#endif
677} 842}
678 843
844#define CORO_RSS \
845 rss += sizeof (SYM (curstackinfo)); \
846 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
847 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
848 rss += SYM (tmps_max) * sizeof (SV *); \
849 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
850 rss += SYM (scopestack_max) * sizeof (I32); \
851 rss += SYM (savestack_max) * sizeof (ANY);
852
679static size_t 853static size_t
680coro_rss (pTHX_ struct coro *coro) 854coro_rss (pTHX_ struct coro *coro)
681{ 855{
682 size_t rss = sizeof (*coro); 856 size_t rss = sizeof (*coro);
683 857
684 if (coro->mainstack) 858 if (coro->mainstack)
685 { 859 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 860 if (coro->flags & CF_RUNNING)
690 { 861 {
691 slot = &tmp_slot; 862 #define SYM(sym) PL_ ## sym
692 863 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 864 #undef SYM
696 } 865 }
697 else 866 else
698 slot = coro->slot;
699
700 if (slot)
701 { 867 {
702 rss += sizeof (slot->curstackinfo); 868 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 869 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 870 #undef SYM
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 } 871 }
714 } 872 }
715 873
716 return rss; 874 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_set_stacklevel calling us */
722#define SSL_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_set_stacklevel */
724#define SSL_TAIL set_stacklevel_tail (aTHX)
725
726INLINE void
727set_stacklevel_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744} 875}
745 876
746/** coroutine stack handling ************************************************/ 877/** coroutine stack handling ************************************************/
747 878
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 879static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
757#endif 888#endif
758 889
759/* 890/*
760 * This overrides the default magic get method of %SIG elements. 891 * This overrides the default magic get method of %SIG elements.
761 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 892 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
762 * and instead of tryign to save and restore the hash elements, we just provide 893 * and instead of trying to save and restore the hash elements, we just provide
763 * readback here. 894 * readback here.
764 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
765 * not expecting this to actually change the hook. This is a potential problem
766 * when a schedule happens then, but we ignore this.
767 */ 895 */
768static int 896static int
769coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 897coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
770{ 898{
771 const char *s = MgPV_nolen_const (mg); 899 const char *s = MgPV_nolen_const (mg);
… …
824 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 952 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
825 953
826 if (svp) 954 if (svp)
827 { 955 {
828 SV *old = *svp; 956 SV *old = *svp;
829 *svp = newSVsv (sv); 957 *svp = SvOK (sv) ? newSVsv (sv) : 0;
830 SvREFCNT_dec (old); 958 SvREFCNT_dec (old);
831 return 0; 959 return 0;
832 } 960 }
833 } 961 }
834 962
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 963 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 964}
837 965
838static void 966static void
967prepare_nop (pTHX_ struct coro_transfer_args *ta)
968{
969 /* kind of mega-hacky, but works */
970 ta->next = ta->prev = (struct coro *)ta;
971}
972
973static int
974slf_check_nop (pTHX_ struct CoroSLF *frame)
975{
976 return 0;
977}
978
979static int
980slf_check_repeat (pTHX_ struct CoroSLF *frame)
981{
982 return 1;
983}
984
985static UNOP coro_setup_op;
986
987static void NOINLINE /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 988coro_setup (pTHX_ struct coro *coro)
840{ 989{
841 /* 990 /*
842 * emulate part of the perl startup here. 991 * emulate part of the perl startup here.
843 */ 992 */
… …
845 994
846 PL_runops = RUNOPS_DEFAULT; 995 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 996 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 997 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 998 PL_comppad = 0;
999 PL_comppad_name = 0;
1000 PL_comppad_name_fill = 0;
1001 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 1002 PL_curpm = 0;
851 PL_curpad = 0; 1003 PL_curpad = 0;
852 PL_localizing = 0; 1004 PL_localizing = 0;
853 PL_dirty = 0; 1005 PL_dirty = 0;
854 PL_restartop = 0; 1006 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 1007#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 1008 PL_parser = 0;
857#endif 1009#endif
1010 PL_hints = 0;
858 1011
859 /* recreate the die/warn hooks */ 1012 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1013 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1014 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
862 1015
863 GvSV (PL_defgv) = newSV (0); 1016 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 1017 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 1018 GvSV (PL_errgv) = newSV (0);
866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1019 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1020 GvHV (PL_hintgv) = 0;
867 PL_rs = newSVsv (GvSV (irsgv)); 1021 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1022 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 1023
870 { 1024 {
871 dSP; 1025 dSP;
872 UNOP myop; 1026 UNOP myop;
873 1027
874 Zero (&myop, 1, UNOP); 1028 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 1029 myop.op_next = Nullop;
1030 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 1031 myop.op_flags = OPf_WANT_VOID;
877 1032
878 PUSHMARK (SP); 1033 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1034 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 1035 PUTBACK;
881 PL_op = (OP *)&myop; 1036 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1037 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 1038 }
885 1039
886 /* this newly created coroutine might be run on an existing cctx which most 1040 /* this newly created coroutine might be run on an existing cctx which most
887 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 1041 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 * so we have to emulate entering pp_set_stacklevel here.
889 */ 1042 */
890 SSL_HEAD; 1043 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
891} 1044 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
892 1045
1046 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1047 coro_setup_op.op_next = PL_op;
1048 coro_setup_op.op_type = OP_ENTERSUB;
1049 coro_setup_op.op_ppaddr = pp_slf;
1050 /* no flags etc. required, as an init function won't be called */
1051
1052 PL_op = (OP *)&coro_setup_op;
1053
1054 /* copy throw, in case it was set before coro_setup */
1055 CORO_THROW = coro->except;
1056
1057 if (expect_false (enable_times))
1058 {
1059 coro_times_update ();
1060 coro_times_sub (coro);
1061 }
1062}
1063
893static void 1064static void
894coro_destruct (pTHX_ struct coro *coro) 1065coro_unwind_stacks (pTHX)
895{ 1066{
896 if (!IN_DESTRUCT) 1067 if (!IN_DESTRUCT)
897 { 1068 {
898 /* restore all saved variables and stuff */ 1069 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 1070 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 1078 POPSTACK_TO (PL_mainstack);
908 1079
909 /* unwind main stack */ 1080 /* unwind main stack */
910 dounwind (-1); 1081 dounwind (-1);
911 } 1082 }
1083}
912 1084
913 SvREFCNT_dec (GvSV (PL_defgv)); 1085static void
914 SvREFCNT_dec (GvAV (PL_defgv)); 1086coro_destruct_perl (pTHX_ struct coro *coro)
915 SvREFCNT_dec (GvSV (PL_errgv)); 1087{
916 SvREFCNT_dec (PL_defoutgv); 1088 SV *svf [9];
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919 1089
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922 1090 {
1091 struct coro *current = SvSTATE_current;
1092
1093 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1094
1095 save_perl (aTHX_ current);
1096 load_perl (aTHX_ coro);
1097
1098 coro_unwind_stacks (aTHX);
1099 coro_destruct_stacks (aTHX);
1100
1101 // now save some sv's to be free'd later
1102 svf [0] = GvSV (PL_defgv);
1103 svf [1] = (SV *)GvAV (PL_defgv);
1104 svf [2] = GvSV (PL_errgv);
1105 svf [3] = (SV *)PL_defoutgv;
1106 svf [4] = PL_rs;
1107 svf [5] = GvSV (irsgv);
1108 svf [6] = (SV *)GvHV (PL_hintgv);
1109 svf [7] = PL_diehook;
1110 svf [8] = PL_warnhook;
1111 assert (9 == sizeof (svf) / sizeof (*svf));
1112
1113 load_perl (aTHX_ current);
1114 }
1115
1116 {
1117 unsigned int i;
1118
1119 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1120 SvREFCNT_dec (svf [i]);
1121
923 SvREFCNT_dec (coro->saved_deffh); 1122 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 1123 SvREFCNT_dec (coro->rouse_cb);
925 1124 SvREFCNT_dec (coro->invoke_cb);
926 coro_destruct_stacks (aTHX); 1125 SvREFCNT_dec (coro->invoke_av);
1126 }
927} 1127}
928 1128
929INLINE void 1129INLINE void
930free_coro_mortal (pTHX) 1130free_coro_mortal (pTHX)
931{ 1131{
… …
939static int 1139static int
940runops_trace (pTHX) 1140runops_trace (pTHX)
941{ 1141{
942 COP *oldcop = 0; 1142 COP *oldcop = 0;
943 int oldcxix = -2; 1143 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1144
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1145 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1146 {
949 PERL_ASYNC_CHECK (); 1147 PERL_ASYNC_CHECK ();
950 1148
951 if (cctx->flags & CC_TRACE_ALL) 1149 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1150 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1151 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1152 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1153 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1154 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1155 AV *av = newAV (); /* return values */
958 SV **cb; 1156 SV **cb;
… …
995 1193
996 if (PL_curcop != &PL_compiling) 1194 if (PL_curcop != &PL_compiling)
997 { 1195 {
998 SV **cb; 1196 SV **cb;
999 1197
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1198 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1199 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1200 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1201
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1202 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1203 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1204 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1205 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1206 SV *fullname = sv_2mortal (newSV (0));
1010 1207
1011 if (isGV (gv)) 1208 if (isGV (gv))
… …
1016 SAVETMPS; 1213 SAVETMPS;
1017 EXTEND (SP, 3); 1214 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1215 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1216 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1217 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1218 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1219 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1220 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1221 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1222 SPAGAIN;
1026 FREETMPS; 1223 FREETMPS;
… …
1029 } 1226 }
1030 1227
1031 oldcxix = cxstack_ix; 1228 oldcxix = cxstack_ix;
1032 } 1229 }
1033 1230
1034 if (cctx->flags & CC_TRACE_LINE) 1231 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1232 {
1036 dSP; 1233 dSP;
1037 1234
1038 PL_runops = RUNOPS_DEFAULT; 1235 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1236 ENTER;
… …
1058 1255
1059 TAINT_NOT; 1256 TAINT_NOT;
1060 return 0; 1257 return 0;
1061} 1258}
1062 1259
1260static struct CoroSLF cctx_ssl_frame;
1261
1063static void 1262static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1263slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1264{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0; 1265 ta->prev = 0;
1068} 1266}
1069 1267
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1268static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1269slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */ 1270{
1073/* also initialises PL_top_env */ 1271 *frame = cctx_ssl_frame;
1272
1273 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1274}
1275
1276/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1074static void NOINLINE 1277static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx) 1278cctx_prepare (pTHX)
1076{ 1279{
1077 dSP;
1078 UNOP myop;
1079
1080 PL_top_env = &PL_start_env; 1280 PL_top_env = &PL_start_env;
1081 1281
1082 if (cctx->flags & CC_TRACE) 1282 if (cctx_current->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1283 PL_runops = runops_trace;
1084 1284
1085 Zero (&myop, 1, UNOP); 1285 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1286 * that can lead to creation of a new cctx */
1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1287 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1288 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1088 1289
1089 PUSHMARK (SP); 1290 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1291 cctx_ssl_frame = slf_frame;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1292
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1293 slf_frame.prepare = slf_prepare_set_stacklevel;
1093 PUTBACK; 1294 slf_frame.check = slf_check_set_stacklevel;
1094 PL_op = (OP *)&myop;
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1096 SPAGAIN;
1097} 1295}
1098 1296
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1297/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1298INLINE void
1101transfer_tail (pTHX) 1299transfer_tail (pTHX)
1102{ 1300{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX); 1301 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118} 1302}
1119 1303
1120/* 1304/*
1121 * this is a _very_ stripped down perl interpreter ;) 1305 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1306 */
… …
1129# endif 1313# endif
1130#endif 1314#endif
1131 { 1315 {
1132 dTHX; 1316 dTHX;
1133 1317
1134 /* we are the alternative tail to pp_set_stacklevel */ 1318 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1319 /* not doing so will re-execute it, which is exactly what we want */
1136 SSL_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1320 /* PL_nop = PL_nop->op_next */
1140 1321
1141 /* inject a fake subroutine call to cctx_init */ 1322 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1323 cctx_prepare (aTHX);
1143 1324
1144 /* cctx_run is the alternative tail of transfer() */ 1325 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1326 transfer_tail (aTHX);
1146 1327
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1328 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1329 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1330 perl_run (PL_curinterp);
1331 /*
1332 * Unfortunately, there is no way to get at the return values of the
1333 * coro body here, as perl_run destroys these
1334 */
1150 1335
1151 /* 1336 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1337 * If perl-run returns we assume exit() was being called or the coro
1153 * fell off the end, which seems to be the only valid (non-bug) 1338 * fell off the end, which seems to be the only valid (non-bug)
1154 * reason for perl_run to return. We try to exit by jumping to the 1339 * reason for perl_run to return. We try to exit by jumping to the
1155 * bootstrap-time "top" top_env, as we cannot restore the "main" 1340 * bootstrap-time "top" top_env, as we cannot restore the "main"
1156 * coroutine as Coro has no such concept 1341 * coroutine as Coro has no such concept.
1342 * This actually isn't valid with the pthread backend, but OSes requiring
1343 * that backend are too broken to do it in a standards-compliant way.
1157 */ 1344 */
1158 PL_top_env = main_top_env; 1345 PL_top_env = main_top_env;
1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1346 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 } 1347 }
1161} 1348}
… …
1238cctx_destroy (coro_cctx *cctx) 1425cctx_destroy (coro_cctx *cctx)
1239{ 1426{
1240 if (!cctx) 1427 if (!cctx)
1241 return; 1428 return;
1242 1429
1430 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1431
1243 --cctx_count; 1432 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1433 coro_destroy (&cctx->cctx);
1245 1434
1246 /* coro_transfer creates new, empty cctx's */ 1435 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1436 if (cctx->sptr)
… …
1305/** coroutine switching *****************************************************/ 1494/** coroutine switching *****************************************************/
1306 1495
1307static void 1496static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1497transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1498{
1499 /* TODO: throwing up here is considered harmful */
1500
1310 if (expect_true (prev != next)) 1501 if (expect_true (prev != next))
1311 { 1502 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1503 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1504 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1314 1505
1315 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1317
1318 if (expect_false (next->flags & CF_DESTROYED)) 1506 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1507 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1320 1508
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1509#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1510 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1511 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1512#endif
1325 } 1513 }
1326} 1514}
1327 1515
1328/* always use the TRANSFER macro */ 1516/* always use the TRANSFER macro */
1329static void NOINLINE 1517static void NOINLINE /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1518transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1519{
1332 dSTACKLEVEL; 1520 dSTACKLEVEL;
1333 1521
1334 /* sometimes transfer is only called to set idle_sp */ 1522 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1523 if (expect_false (!prev))
1336 { 1524 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1525 cctx_current->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1526 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1527 }
1340 else if (expect_true (prev != next)) 1528 else if (expect_true (prev != next))
1341 { 1529 {
1342 coro_cctx *prev__cctx; 1530 coro_cctx *cctx_prev;
1343 1531
1344 if (expect_false (prev->flags & CF_NEW)) 1532 if (expect_false (prev->flags & CF_NEW))
1345 { 1533 {
1346 /* create a new empty/source context */ 1534 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1535 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1536 prev->flags |= CF_RUNNING;
1350 } 1537 }
1351 1538
1352 prev->flags &= ~CF_RUNNING; 1539 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1540 next->flags |= CF_RUNNING;
1354
1355 LOCK;
1356 1541
1357 /* first get rid of the old state */ 1542 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1543 save_perl (aTHX_ prev);
1359 1544
1360 if (expect_false (next->flags & CF_NEW)) 1545 if (expect_false (next->flags & CF_NEW))
… …
1365 coro_setup (aTHX_ next); 1550 coro_setup (aTHX_ next);
1366 } 1551 }
1367 else 1552 else
1368 load_perl (aTHX_ next); 1553 load_perl (aTHX_ next);
1369 1554
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */ 1555 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1556 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel 1557 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1558 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1559 && !force_cctx
1377 )) 1560 ))
1378 { 1561 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1562 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1380 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1563 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1381 1564
1382 prev->cctx = 0;
1383
1384 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1565 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1385 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1566 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1567 if (expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1568 if (expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1569 next->cctx = cctx_get (aTHX);
1389 1570
1390 cctx_put (prev__cctx); 1571 cctx_put (cctx_current);
1391 } 1572 }
1573 else
1574 prev->cctx = cctx_current;
1392 1575
1393 ++next->usecount; 1576 ++next->usecount;
1394 1577
1395 if (expect_true (!next->cctx)) 1578 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1579 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1580
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1581 next->cctx = 0;
1399 transfer_next = next;
1400 1582
1401 if (expect_false (prev__cctx != next->cctx)) 1583 if (expect_false (cctx_prev != cctx_current))
1402 { 1584 {
1403 prev__cctx->top_env = PL_top_env; 1585 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1586 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1587 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1588 }
1407 1589
1408 transfer_tail (aTHX); 1590 transfer_tail (aTHX);
1409 } 1591 }
1410} 1592}
… …
1417static int 1599static int
1418coro_state_destroy (pTHX_ struct coro *coro) 1600coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1601{
1420 if (coro->flags & CF_DESTROYED) 1602 if (coro->flags & CF_DESTROYED)
1421 return 0; 1603 return 0;
1604
1605 if (coro->on_destroy && !PL_dirty)
1606 coro->on_destroy (aTHX_ coro);
1422 1607
1423 coro->flags |= CF_DESTROYED; 1608 coro->flags |= CF_DESTROYED;
1424 1609
1425 if (coro->flags & CF_READY) 1610 if (coro->flags & CF_READY)
1426 { 1611 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1612 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1613 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1614 --coro_nready;
1431 UNLOCK;
1432 } 1615 }
1433 else 1616 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1617 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1618
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1619 if (coro->mainstack
1437 { 1620 && coro->mainstack != main_mainstack
1438 struct coro temp; 1621 && coro->slot
1439 1622 && !PL_dirty)
1440 if (coro->flags & CF_RUNNING)
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442
1443 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro);
1445
1446 coro_destruct (aTHX_ coro); 1623 coro_destruct_perl (aTHX_ coro);
1447
1448 load_perl (aTHX_ &temp);
1449
1450 coro->slot = 0;
1451 }
1452 1624
1453 cctx_destroy (coro->cctx); 1625 cctx_destroy (coro->cctx);
1626 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1627 SvREFCNT_dec (coro->args);
1628 SvREFCNT_dec (CORO_THROW);
1455 1629
1456 if (coro->next) coro->next->prev = coro->prev; 1630 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1631 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1632 if (coro == coro_first) coro_first = coro->next;
1459 1633
… …
1497# define MGf_DUP 0 1671# define MGf_DUP 0
1498#endif 1672#endif
1499}; 1673};
1500 1674
1501static void 1675static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1676prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1677{
1504 ta->prev = SvSTATE (prev_sv); 1678 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1679 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1680 TRANSFER_CHECK (*ta);
1507} 1681}
1508 1682
1509static void 1683static void
1510api_transfer (SV *prev_sv, SV *next_sv) 1684api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1685{
1512 dTHX;
1513 struct transfer_args ta; 1686 struct coro_transfer_args ta;
1514 1687
1515 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1688 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1516 TRANSFER (ta, 1); 1689 TRANSFER (ta, 1);
1517} 1690}
1518 1691
1692/*****************************************************************************/
1693/* gensub: simple closure generation utility */
1694
1695#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1696
1697/* create a closure from XS, returns a code reference */
1698/* the arg can be accessed via GENSUB_ARG from the callback */
1699/* the callback must use dXSARGS/XSRETURN */
1700static SV *
1701gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1702{
1703 CV *cv = (CV *)newSV (0);
1704
1705 sv_upgrade ((SV *)cv, SVt_PVCV);
1706
1707 CvANON_on (cv);
1708 CvISXSUB_on (cv);
1709 CvXSUB (cv) = xsub;
1710 GENSUB_ARG = arg;
1711
1712 return newRV_noinc ((SV *)cv);
1713}
1714
1519/** Coro ********************************************************************/ 1715/** Coro ********************************************************************/
1520 1716
1521static void 1717INLINE void
1522coro_enq (pTHX_ SV *coro_sv) 1718coro_enq (pTHX_ struct coro *coro)
1523{ 1719{
1524 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1720 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1525}
1526 1721
1527static SV * 1722 SvREFCNT_inc_NN (coro->hv);
1723
1724 coro->next_ready = 0;
1725 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1726 ready [1] = coro;
1727}
1728
1729INLINE struct coro *
1528coro_deq (pTHX) 1730coro_deq (pTHX)
1529{ 1731{
1530 int prio; 1732 int prio;
1531 1733
1532 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1734 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1533 if (AvFILLp (coro_ready [prio]) >= 0) 1735 {
1534 return av_shift (coro_ready [prio]); 1736 struct coro **ready = coro_ready [prio];
1737
1738 if (ready [0])
1739 {
1740 struct coro *coro = ready [0];
1741 ready [0] = coro->next_ready;
1742 return coro;
1743 }
1744 }
1535 1745
1536 return 0; 1746 return 0;
1537} 1747}
1538 1748
1539static int 1749static int
1540api_ready (SV *coro_sv) 1750api_ready (pTHX_ SV *coro_sv)
1541{ 1751{
1542 dTHX;
1543 struct coro *coro; 1752 struct coro *coro;
1544 SV *sv_hook; 1753 SV *sv_hook;
1545 void (*xs_hook)(void); 1754 void (*xs_hook)(void);
1546 1755
1547 if (SvROK (coro_sv))
1548 coro_sv = SvRV (coro_sv);
1549
1550 coro = SvSTATE (coro_sv); 1756 coro = SvSTATE (coro_sv);
1551 1757
1552 if (coro->flags & CF_READY) 1758 if (coro->flags & CF_READY)
1553 return 0; 1759 return 0;
1554 1760
1555 coro->flags |= CF_READY; 1761 coro->flags |= CF_READY;
1556 1762
1557 LOCK;
1558
1559 sv_hook = coro_nready ? 0 : coro_readyhook; 1763 sv_hook = coro_nready ? 0 : coro_readyhook;
1560 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1764 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1561 1765
1562 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1766 coro_enq (aTHX_ coro);
1563 ++coro_nready; 1767 ++coro_nready;
1564 1768
1565 UNLOCK;
1566
1567 if (sv_hook) 1769 if (sv_hook)
1568 { 1770 {
1569 dSP; 1771 dSP;
1570 1772
1571 ENTER; 1773 ENTER;
1572 SAVETMPS; 1774 SAVETMPS;
1573 1775
1574 PUSHMARK (SP); 1776 PUSHMARK (SP);
1575 PUTBACK; 1777 PUTBACK;
1576 call_sv (sv_hook, G_DISCARD); 1778 call_sv (sv_hook, G_VOID | G_DISCARD);
1577 SPAGAIN;
1578 1779
1579 FREETMPS; 1780 FREETMPS;
1580 LEAVE; 1781 LEAVE;
1581 } 1782 }
1582 1783
… …
1585 1786
1586 return 1; 1787 return 1;
1587} 1788}
1588 1789
1589static int 1790static int
1590api_is_ready (SV *coro_sv) 1791api_is_ready (pTHX_ SV *coro_sv)
1591{ 1792{
1592 dTHX;
1593
1594 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1793 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1595} 1794}
1596 1795
1796/* expects to own a reference to next->hv */
1597INLINE void 1797INLINE void
1598prepare_schedule (pTHX_ struct transfer_args *ta) 1798prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1599{ 1799{
1600 SV *prev_sv, *next_sv;
1601
1602 for (;;)
1603 {
1604 LOCK;
1605 next_sv = coro_deq (aTHX);
1606
1607 /* nothing to schedule: call the idle handler */
1608 if (expect_false (!next_sv))
1609 {
1610 dSP;
1611 UNLOCK;
1612
1613 ENTER;
1614 SAVETMPS;
1615
1616 PUSHMARK (SP);
1617 PUTBACK;
1618 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1619 SPAGAIN;
1620
1621 FREETMPS;
1622 LEAVE;
1623 continue;
1624 }
1625
1626 ta->next = SvSTATE (next_sv);
1627
1628 /* cannot transfer to destroyed coros, skip and look for next */
1629 if (expect_false (ta->next->flags & CF_DESTROYED))
1630 {
1631 UNLOCK;
1632 SvREFCNT_dec (next_sv);
1633 /* coro_nready has already been taken care of by destroy */
1634 continue;
1635 }
1636
1637 --coro_nready;
1638 UNLOCK;
1639 break;
1640 }
1641
1642 /* free this only after the transfer */
1643 prev_sv = SvRV (coro_current); 1800 SV *prev_sv = SvRV (coro_current);
1801
1644 ta->prev = SvSTATE (prev_sv); 1802 ta->prev = SvSTATE_hv (prev_sv);
1803 ta->next = next;
1804
1645 TRANSFER_CHECK (*ta); 1805 TRANSFER_CHECK (*ta);
1646 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1806
1647 ta->next->flags &= ~CF_READY;
1648 SvRV_set (coro_current, next_sv); 1807 SvRV_set (coro_current, (SV *)next->hv);
1649 1808
1650 LOCK;
1651 free_coro_mortal (aTHX); 1809 free_coro_mortal (aTHX);
1652 coro_mortal = prev_sv; 1810 coro_mortal = prev_sv;
1653 UNLOCK; 1811}
1812
1813static void
1814prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1815{
1816 for (;;)
1817 {
1818 struct coro *next = coro_deq (aTHX);
1819
1820 if (expect_true (next))
1821 {
1822 /* cannot transfer to destroyed coros, skip and look for next */
1823 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1824 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1825 else
1826 {
1827 next->flags &= ~CF_READY;
1828 --coro_nready;
1829
1830 prepare_schedule_to (aTHX_ ta, next);
1831 break;
1832 }
1833 }
1834 else
1835 {
1836 /* nothing to schedule: call the idle handler */
1837 if (SvROK (sv_idle)
1838 && SvOBJECT (SvRV (sv_idle)))
1839 {
1840 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1841 api_ready (aTHX_ SvRV (sv_idle));
1842 --coro_nready;
1843 }
1844 else
1845 {
1846 dSP;
1847
1848 ENTER;
1849 SAVETMPS;
1850
1851 PUSHMARK (SP);
1852 PUTBACK;
1853 call_sv (sv_idle, G_VOID | G_DISCARD);
1854
1855 FREETMPS;
1856 LEAVE;
1857 }
1858 }
1859 }
1654} 1860}
1655 1861
1656INLINE void 1862INLINE void
1657prepare_cede (pTHX_ struct transfer_args *ta) 1863prepare_cede (pTHX_ struct coro_transfer_args *ta)
1658{ 1864{
1659 api_ready (coro_current); 1865 api_ready (aTHX_ coro_current);
1660 prepare_schedule (aTHX_ ta); 1866 prepare_schedule (aTHX_ ta);
1661} 1867}
1662 1868
1663static void 1869INLINE void
1664prepare_cede_notself (pTHX_ struct transfer_args *ta) 1870prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1665{ 1871{
1666 SV *prev = SvRV (coro_current); 1872 SV *prev = SvRV (coro_current);
1667 1873
1668 if (coro_nready) 1874 if (coro_nready)
1669 { 1875 {
1670 prepare_schedule (aTHX_ ta); 1876 prepare_schedule (aTHX_ ta);
1671 api_ready (prev); 1877 api_ready (aTHX_ prev);
1672 } 1878 }
1673 else 1879 else
1674 ta->prev = ta->next = SvSTATE (prev); 1880 prepare_nop (aTHX_ ta);
1675} 1881}
1676 1882
1677static void 1883static void
1678api_schedule (void) 1884api_schedule (pTHX)
1679{ 1885{
1680 dTHX;
1681 struct transfer_args ta; 1886 struct coro_transfer_args ta;
1682 1887
1683 prepare_schedule (aTHX_ &ta); 1888 prepare_schedule (aTHX_ &ta);
1684 TRANSFER (ta, 1); 1889 TRANSFER (ta, 1);
1685} 1890}
1686 1891
1892static void
1893api_schedule_to (pTHX_ SV *coro_sv)
1894{
1895 struct coro_transfer_args ta;
1896 struct coro *next = SvSTATE (coro_sv);
1897
1898 SvREFCNT_inc_NN (coro_sv);
1899 prepare_schedule_to (aTHX_ &ta, next);
1900}
1901
1687static int 1902static int
1688api_cede (void) 1903api_cede (pTHX)
1689{ 1904{
1690 dTHX;
1691 struct transfer_args ta; 1905 struct coro_transfer_args ta;
1692 1906
1693 prepare_cede (aTHX_ &ta); 1907 prepare_cede (aTHX_ &ta);
1694 1908
1695 if (expect_true (ta.prev != ta.next)) 1909 if (expect_true (ta.prev != ta.next))
1696 { 1910 {
… …
1700 else 1914 else
1701 return 0; 1915 return 0;
1702} 1916}
1703 1917
1704static int 1918static int
1705api_cede_notself (void) 1919api_cede_notself (pTHX)
1706{ 1920{
1707 if (coro_nready) 1921 if (coro_nready)
1708 { 1922 {
1709 dTHX;
1710 struct transfer_args ta; 1923 struct coro_transfer_args ta;
1711 1924
1712 prepare_cede_notself (aTHX_ &ta); 1925 prepare_cede_notself (aTHX_ &ta);
1713 TRANSFER (ta, 1); 1926 TRANSFER (ta, 1);
1714 return 1; 1927 return 1;
1715 } 1928 }
1716 else 1929 else
1717 return 0; 1930 return 0;
1718} 1931}
1719 1932
1720static void 1933static void
1721api_trace (SV *coro_sv, int flags) 1934api_trace (pTHX_ SV *coro_sv, int flags)
1722{ 1935{
1723 dTHX;
1724 struct coro *coro = SvSTATE (coro_sv); 1936 struct coro *coro = SvSTATE (coro_sv);
1937
1938 if (coro->flags & CF_RUNNING)
1939 croak ("cannot enable tracing on a running coroutine, caught");
1725 1940
1726 if (flags & CC_TRACE) 1941 if (flags & CC_TRACE)
1727 { 1942 {
1728 if (!coro->cctx) 1943 if (!coro->cctx)
1729 coro->cctx = cctx_new_run (); 1944 coro->cctx = cctx_new_run ();
1730 else if (!(coro->cctx->flags & CC_TRACE)) 1945 else if (!(coro->cctx->flags & CC_TRACE))
1731 croak ("cannot enable tracing on coroutine with custom stack"); 1946 croak ("cannot enable tracing on coroutine with custom stack, caught");
1732 1947
1733 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1948 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1734 } 1949 }
1735 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1950 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1736 { 1951 {
… …
1741 else 1956 else
1742 coro->slot->runops = RUNOPS_DEFAULT; 1957 coro->slot->runops = RUNOPS_DEFAULT;
1743 } 1958 }
1744} 1959}
1745 1960
1746#if 0 1961static void
1962coro_call_on_destroy (pTHX_ struct coro *coro)
1963{
1964 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1965 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1966
1967 if (on_destroyp)
1968 {
1969 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1970
1971 while (AvFILLp (on_destroy) >= 0)
1972 {
1973 dSP; /* don't disturb outer sp */
1974 SV *cb = av_pop (on_destroy);
1975
1976 PUSHMARK (SP);
1977
1978 if (statusp)
1979 {
1980 int i;
1981 AV *status = (AV *)SvRV (*statusp);
1982 EXTEND (SP, AvFILLp (status) + 1);
1983
1984 for (i = 0; i <= AvFILLp (status); ++i)
1985 PUSHs (AvARRAY (status)[i]);
1986 }
1987
1988 PUTBACK;
1989 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1990 }
1991 }
1992}
1993
1994static void
1995slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1996{
1997 int i;
1998 HV *hv = (HV *)SvRV (coro_current);
1999 AV *av = newAV ();
2000
2001 av_extend (av, items - 1);
2002 for (i = 0; i < items; ++i)
2003 av_push (av, SvREFCNT_inc_NN (arg [i]));
2004
2005 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2006
2007 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2008 api_ready (aTHX_ sv_manager);
2009
2010 frame->prepare = prepare_schedule;
2011 frame->check = slf_check_repeat;
2012
2013 /* as a minor optimisation, we could unwind all stacks here */
2014 /* but that puts extra pressure on pp_slf, and is not worth much */
2015 /*coro_unwind_stacks (aTHX);*/
2016}
2017
2018/*****************************************************************************/
2019/* async pool handler */
2020
1747static int 2021static int
1748coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2022slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1749{ 2023{
1750 AV *padlist; 2024 HV *hv = (HV *)SvRV (coro_current);
1751 AV *av = (AV *)mg->mg_obj; 2025 struct coro *coro = (struct coro *)frame->data;
1752 2026
1753 abort (); 2027 if (!coro->invoke_cb)
2028 return 1; /* loop till we have invoke */
2029 else
2030 {
2031 hv_store (hv, "desc", sizeof ("desc") - 1,
2032 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2033
2034 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2035
2036 {
2037 dSP;
2038 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2039 PUTBACK;
2040 }
2041
2042 SvREFCNT_dec (GvAV (PL_defgv));
2043 GvAV (PL_defgv) = coro->invoke_av;
2044 coro->invoke_av = 0;
2045
2046 return 0;
2047 }
2048}
2049
2050static void
2051slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2052{
2053 HV *hv = (HV *)SvRV (coro_current);
2054 struct coro *coro = SvSTATE_hv ((SV *)hv);
2055
2056 if (expect_true (coro->saved_deffh))
2057 {
2058 /* subsequent iteration */
2059 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2060 coro->saved_deffh = 0;
2061
2062 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2063 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2064 {
2065 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2066 coro->invoke_av = newAV ();
2067
2068 frame->prepare = prepare_nop;
2069 }
2070 else
2071 {
2072 av_clear (GvAV (PL_defgv));
2073 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2074
2075 coro->prio = 0;
2076
2077 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2078 api_trace (aTHX_ coro_current, 0);
2079
2080 frame->prepare = prepare_schedule;
2081 av_push (av_async_pool, SvREFCNT_inc (hv));
2082 }
2083 }
2084 else
2085 {
2086 /* first iteration, simply fall through */
2087 frame->prepare = prepare_nop;
2088 }
2089
2090 frame->check = slf_check_pool_handler;
2091 frame->data = (void *)coro;
2092}
2093
2094/*****************************************************************************/
2095/* rouse callback */
2096
2097#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2098
2099static void
2100coro_rouse_callback (pTHX_ CV *cv)
2101{
2102 dXSARGS;
2103 SV *data = (SV *)GENSUB_ARG;
2104
2105 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2106 {
2107 /* first call, set args */
2108 SV *coro = SvRV (data);
2109 AV *av = newAV ();
2110
2111 SvRV_set (data, (SV *)av);
2112
2113 /* better take a full copy of the arguments */
2114 while (items--)
2115 av_store (av, items, newSVsv (ST (items)));
2116
2117 api_ready (aTHX_ coro);
2118 SvREFCNT_dec (coro);
2119 }
2120
2121 XSRETURN_EMPTY;
2122}
2123
2124static int
2125slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2126{
2127 SV *data = (SV *)frame->data;
2128
2129 if (CORO_THROW)
2130 return 0;
2131
2132 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2133 return 1;
2134
2135 /* now push all results on the stack */
2136 {
2137 dSP;
2138 AV *av = (AV *)SvRV (data);
2139 int i;
2140
2141 EXTEND (SP, AvFILLp (av) + 1);
2142 for (i = 0; i <= AvFILLp (av); ++i)
2143 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2144
2145 /* we have stolen the elements, so set length to zero and free */
2146 AvFILLp (av) = -1;
2147 av_undef (av);
2148
2149 PUTBACK;
2150 }
1754 2151
1755 return 0; 2152 return 0;
1756} 2153}
1757 2154
1758static MGVTBL coro_gensub_vtbl = { 2155static void
1759 0, 0, 0, 0, 2156slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1760 coro_gensub_free 2157{
1761}; 2158 SV *cb;
1762#endif 2159
2160 if (items)
2161 cb = arg [0];
2162 else
2163 {
2164 struct coro *coro = SvSTATE_current;
2165
2166 if (!coro->rouse_cb)
2167 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2168
2169 cb = sv_2mortal (coro->rouse_cb);
2170 coro->rouse_cb = 0;
2171 }
2172
2173 if (!SvROK (cb)
2174 || SvTYPE (SvRV (cb)) != SVt_PVCV
2175 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2176 croak ("Coro::rouse_wait called with illegal callback argument,");
2177
2178 {
2179 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2180 SV *data = (SV *)GENSUB_ARG;
2181
2182 frame->data = (void *)data;
2183 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2184 frame->check = slf_check_rouse_wait;
2185 }
2186}
2187
2188static SV *
2189coro_new_rouse_cb (pTHX)
2190{
2191 HV *hv = (HV *)SvRV (coro_current);
2192 struct coro *coro = SvSTATE_hv (hv);
2193 SV *data = newRV_inc ((SV *)hv);
2194 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2195
2196 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2197 SvREFCNT_dec (data); /* magicext increases the refcount */
2198
2199 SvREFCNT_dec (coro->rouse_cb);
2200 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2201
2202 return cb;
2203}
2204
2205/*****************************************************************************/
2206/* schedule-like-function opcode (SLF) */
2207
2208static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2209static const CV *slf_cv;
2210static SV **slf_argv;
2211static int slf_argc, slf_arga; /* count, allocated */
2212static I32 slf_ax; /* top of stack, for restore */
2213
2214/* this restores the stack in the case we patched the entersub, to */
2215/* recreate the stack frame as perl will on following calls */
2216/* since entersub cleared the stack */
2217static OP *
2218pp_restore (pTHX)
2219{
2220 int i;
2221 SV **SP = PL_stack_base + slf_ax;
2222
2223 PUSHMARK (SP);
2224
2225 EXTEND (SP, slf_argc + 1);
2226
2227 for (i = 0; i < slf_argc; ++i)
2228 PUSHs (sv_2mortal (slf_argv [i]));
2229
2230 PUSHs ((SV *)CvGV (slf_cv));
2231
2232 RETURNOP (slf_restore.op_first);
2233}
2234
2235static void
2236slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2237{
2238 SV **arg = (SV **)slf_frame.data;
2239
2240 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2241}
2242
2243static void
2244slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2245{
2246 if (items != 2)
2247 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2248
2249 frame->prepare = slf_prepare_transfer;
2250 frame->check = slf_check_nop;
2251 frame->data = (void *)arg; /* let's hope it will stay valid */
2252}
2253
2254static void
2255slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2256{
2257 frame->prepare = prepare_schedule;
2258 frame->check = slf_check_nop;
2259}
2260
2261static void
2262slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2263{
2264 struct coro *next = (struct coro *)slf_frame.data;
2265
2266 SvREFCNT_inc_NN (next->hv);
2267 prepare_schedule_to (aTHX_ ta, next);
2268}
2269
2270static void
2271slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2272{
2273 if (!items)
2274 croak ("Coro::schedule_to expects a coroutine argument, caught");
2275
2276 frame->data = (void *)SvSTATE (arg [0]);
2277 frame->prepare = slf_prepare_schedule_to;
2278 frame->check = slf_check_nop;
2279}
2280
2281static void
2282slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2283{
2284 api_ready (aTHX_ SvRV (coro_current));
2285
2286 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2287}
2288
2289static void
2290slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2291{
2292 frame->prepare = prepare_cede;
2293 frame->check = slf_check_nop;
2294}
2295
2296static void
2297slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2298{
2299 frame->prepare = prepare_cede_notself;
2300 frame->check = slf_check_nop;
2301}
2302
2303/*
2304 * these not obviously related functions are all rolled into one
2305 * function to increase chances that they all will call transfer with the same
2306 * stack offset
2307 * SLF stands for "schedule-like-function".
2308 */
2309static OP *
2310pp_slf (pTHX)
2311{
2312 I32 checkmark; /* mark SP to see how many elements check has pushed */
2313
2314 /* set up the slf frame, unless it has already been set-up */
2315 /* the latter happens when a new coro has been started */
2316 /* or when a new cctx was attached to an existing coroutine */
2317 if (expect_true (!slf_frame.prepare))
2318 {
2319 /* first iteration */
2320 dSP;
2321 SV **arg = PL_stack_base + TOPMARK + 1;
2322 int items = SP - arg; /* args without function object */
2323 SV *gv = *sp;
2324
2325 /* do a quick consistency check on the "function" object, and if it isn't */
2326 /* for us, divert to the real entersub */
2327 if (SvTYPE (gv) != SVt_PVGV
2328 || !GvCV (gv)
2329 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2330 return PL_ppaddr[OP_ENTERSUB](aTHX);
2331
2332 if (!(PL_op->op_flags & OPf_STACKED))
2333 {
2334 /* ampersand-form of call, use @_ instead of stack */
2335 AV *av = GvAV (PL_defgv);
2336 arg = AvARRAY (av);
2337 items = AvFILLp (av) + 1;
2338 }
2339
2340 /* now call the init function, which needs to set up slf_frame */
2341 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2342 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2343
2344 /* pop args */
2345 SP = PL_stack_base + POPMARK;
2346
2347 PUTBACK;
2348 }
2349
2350 /* now that we have a slf_frame, interpret it! */
2351 /* we use a callback system not to make the code needlessly */
2352 /* complicated, but so we can run multiple perl coros from one cctx */
2353
2354 do
2355 {
2356 struct coro_transfer_args ta;
2357
2358 slf_frame.prepare (aTHX_ &ta);
2359 TRANSFER (ta, 0);
2360
2361 checkmark = PL_stack_sp - PL_stack_base;
2362 }
2363 while (slf_frame.check (aTHX_ &slf_frame));
2364
2365 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2366
2367 /* exception handling */
2368 if (expect_false (CORO_THROW))
2369 {
2370 SV *exception = sv_2mortal (CORO_THROW);
2371
2372 CORO_THROW = 0;
2373 sv_setsv (ERRSV, exception);
2374 croak (0);
2375 }
2376
2377 /* return value handling - mostly like entersub */
2378 /* make sure we put something on the stack in scalar context */
2379 if (GIMME_V == G_SCALAR)
2380 {
2381 dSP;
2382 SV **bot = PL_stack_base + checkmark;
2383
2384 if (sp == bot) /* too few, push undef */
2385 bot [1] = &PL_sv_undef;
2386 else if (sp != bot + 1) /* too many, take last one */
2387 bot [1] = *sp;
2388
2389 SP = bot + 1;
2390
2391 PUTBACK;
2392 }
2393
2394 return NORMAL;
2395}
2396
2397static void
2398api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2399{
2400 int i;
2401 SV **arg = PL_stack_base + ax;
2402 int items = PL_stack_sp - arg + 1;
2403
2404 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2405
2406 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2407 && PL_op->op_ppaddr != pp_slf)
2408 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2409
2410 CvFLAGS (cv) |= CVf_SLF;
2411 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2412 slf_cv = cv;
2413
2414 /* we patch the op, and then re-run the whole call */
2415 /* we have to put the same argument on the stack for this to work */
2416 /* and this will be done by pp_restore */
2417 slf_restore.op_next = (OP *)&slf_restore;
2418 slf_restore.op_type = OP_CUSTOM;
2419 slf_restore.op_ppaddr = pp_restore;
2420 slf_restore.op_first = PL_op;
2421
2422 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2423
2424 if (PL_op->op_flags & OPf_STACKED)
2425 {
2426 if (items > slf_arga)
2427 {
2428 slf_arga = items;
2429 free (slf_argv);
2430 slf_argv = malloc (slf_arga * sizeof (SV *));
2431 }
2432
2433 slf_argc = items;
2434
2435 for (i = 0; i < items; ++i)
2436 slf_argv [i] = SvREFCNT_inc (arg [i]);
2437 }
2438 else
2439 slf_argc = 0;
2440
2441 PL_op->op_ppaddr = pp_slf;
2442 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2443
2444 PL_op = (OP *)&slf_restore;
2445}
2446
2447/*****************************************************************************/
2448/* dynamic wind */
2449
2450static void
2451on_enterleave_call (pTHX_ SV *cb)
2452{
2453 dSP;
2454
2455 PUSHSTACK;
2456
2457 PUSHMARK (SP);
2458 PUTBACK;
2459 call_sv (cb, G_VOID | G_DISCARD);
2460 SPAGAIN;
2461
2462 POPSTACK;
2463}
2464
2465static SV *
2466coro_avp_pop_and_free (pTHX_ AV **avp)
2467{
2468 AV *av = *avp;
2469 SV *res = av_pop (av);
2470
2471 if (AvFILLp (av) < 0)
2472 {
2473 *avp = 0;
2474 SvREFCNT_dec (av);
2475 }
2476
2477 return res;
2478}
2479
2480static void
2481coro_pop_on_enter (pTHX_ void *coro)
2482{
2483 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2484 SvREFCNT_dec (cb);
2485}
2486
2487static void
2488coro_pop_on_leave (pTHX_ void *coro)
2489{
2490 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2491 on_enterleave_call (aTHX_ sv_2mortal (cb));
2492}
1763 2493
1764/*****************************************************************************/ 2494/*****************************************************************************/
1765/* PerlIO::cede */ 2495/* PerlIO::cede */
1766 2496
1767typedef struct 2497typedef struct
… …
1795 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2525 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1796 double now = nvtime (); 2526 double now = nvtime ();
1797 2527
1798 if (now >= self->next) 2528 if (now >= self->next)
1799 { 2529 {
1800 api_cede (); 2530 api_cede (aTHX);
1801 self->next = now + self->every; 2531 self->next = now + self->every;
1802 } 2532 }
1803 2533
1804 return PerlIOBuf_flush (aTHX_ f); 2534 return PerlIOBuf_flush (aTHX_ f);
1805} 2535}
… …
1835 PerlIOBuf_get_cnt, 2565 PerlIOBuf_get_cnt,
1836 PerlIOBuf_set_ptrcnt, 2566 PerlIOBuf_set_ptrcnt,
1837}; 2567};
1838 2568
1839/*****************************************************************************/ 2569/*****************************************************************************/
2570/* Coro::Semaphore & Coro::Signal */
1840 2571
1841static const CV *ssl_cv; /* for quick consistency check */
1842
1843static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1844static SV *ssl_arg0;
1845static SV *ssl_arg1;
1846
1847/* this restores the stack in the case we patched the entersub, to */
1848/* recreate the stack frame as perl will on following calls */
1849/* since entersub cleared the stack */
1850static OP * 2572static SV *
1851pp_restore (pTHX) 2573coro_waitarray_new (pTHX_ int count)
1852{ 2574{
2575 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2576 AV *av = newAV ();
2577 SV **ary;
2578
2579 /* unfortunately, building manually saves memory */
2580 Newx (ary, 2, SV *);
2581 AvALLOC (av) = ary;
2582#if PERL_VERSION_ATLEAST (5,10,0)
2583 AvARRAY (av) = ary;
2584#else
2585 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2586 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2587 SvPVX ((SV *)av) = (char *)ary;
2588#endif
2589 AvMAX (av) = 1;
2590 AvFILLp (av) = 0;
2591 ary [0] = newSViv (count);
2592
2593 return newRV_noinc ((SV *)av);
2594}
2595
2596/* semaphore */
2597
2598static void
2599coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2600{
2601 SV *count_sv = AvARRAY (av)[0];
2602 IV count = SvIVX (count_sv);
2603
2604 count += adjust;
2605 SvIVX (count_sv) = count;
2606
2607 /* now wake up as many waiters as are expected to lock */
2608 while (count > 0 && AvFILLp (av) > 0)
2609 {
2610 SV *cb;
2611
2612 /* swap first two elements so we can shift a waiter */
2613 AvARRAY (av)[0] = AvARRAY (av)[1];
2614 AvARRAY (av)[1] = count_sv;
2615 cb = av_shift (av);
2616
2617 if (SvOBJECT (cb))
2618 {
2619 api_ready (aTHX_ cb);
2620 --count;
2621 }
2622 else if (SvTYPE (cb) == SVt_PVCV)
2623 {
2624 dSP;
2625 PUSHMARK (SP);
2626 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2627 PUTBACK;
2628 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2629 }
2630
2631 SvREFCNT_dec (cb);
2632 }
2633}
2634
2635static void
2636coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2637{
2638 /* call $sem->adjust (0) to possibly wake up some other waiters */
2639 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2640}
2641
2642static int
2643slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2644{
2645 AV *av = (AV *)frame->data;
2646 SV *count_sv = AvARRAY (av)[0];
2647
2648 /* if we are about to throw, don't actually acquire the lock, just throw */
2649 if (CORO_THROW)
2650 return 0;
2651 else if (SvIVX (count_sv) > 0)
2652 {
2653 SvSTATE_current->on_destroy = 0;
2654
2655 if (acquire)
2656 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2657 else
2658 coro_semaphore_adjust (aTHX_ av, 0);
2659
2660 return 0;
2661 }
2662 else
2663 {
2664 int i;
2665 /* if we were woken up but can't down, we look through the whole */
2666 /* waiters list and only add us if we aren't in there already */
2667 /* this avoids some degenerate memory usage cases */
2668
2669 for (i = 1; i <= AvFILLp (av); ++i)
2670 if (AvARRAY (av)[i] == SvRV (coro_current))
2671 return 1;
2672
2673 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2674 return 1;
2675 }
2676}
2677
2678static int
2679slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2680{
2681 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2682}
2683
2684static int
2685slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2686{
2687 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2688}
2689
2690static void
2691slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2692{
2693 AV *av = (AV *)SvRV (arg [0]);
2694
2695 if (SvIVX (AvARRAY (av)[0]) > 0)
2696 {
2697 frame->data = (void *)av;
2698 frame->prepare = prepare_nop;
2699 }
2700 else
2701 {
2702 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2703
2704 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2705 frame->prepare = prepare_schedule;
2706
2707 /* to avoid race conditions when a woken-up coro gets terminated */
2708 /* we arrange for a temporary on_destroy that calls adjust (0) */
2709 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2710 }
2711}
2712
2713static void
2714slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2715{
2716 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2717 frame->check = slf_check_semaphore_down;
2718}
2719
2720static void
2721slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2722{
2723 if (items >= 2)
2724 {
2725 /* callback form */
2726 AV *av = (AV *)SvRV (arg [0]);
2727 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2728
2729 av_push (av, SvREFCNT_inc_NN (cb_cv));
2730
2731 if (SvIVX (AvARRAY (av)[0]) > 0)
2732 coro_semaphore_adjust (aTHX_ av, 0);
2733
2734 frame->prepare = prepare_nop;
2735 frame->check = slf_check_nop;
2736 }
2737 else
2738 {
2739 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2740 frame->check = slf_check_semaphore_wait;
2741 }
2742}
2743
2744/* signal */
2745
2746static void
2747coro_signal_wake (pTHX_ AV *av, int count)
2748{
2749 SvIVX (AvARRAY (av)[0]) = 0;
2750
2751 /* now signal count waiters */
2752 while (count > 0 && AvFILLp (av) > 0)
2753 {
2754 SV *cb;
2755
2756 /* swap first two elements so we can shift a waiter */
2757 cb = AvARRAY (av)[0];
2758 AvARRAY (av)[0] = AvARRAY (av)[1];
2759 AvARRAY (av)[1] = cb;
2760
2761 cb = av_shift (av);
2762
2763 if (SvTYPE (cb) == SVt_PVCV)
2764 {
2765 dSP;
2766 PUSHMARK (SP);
2767 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2768 PUTBACK;
2769 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2770 }
2771 else
2772 {
2773 api_ready (aTHX_ cb);
2774 sv_setiv (cb, 0); /* signal waiter */
2775 }
2776
2777 SvREFCNT_dec (cb);
2778
2779 --count;
2780 }
2781}
2782
2783static int
2784slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2785{
2786 /* if we are about to throw, also stop waiting */
2787 return SvROK ((SV *)frame->data) && !CORO_THROW;
2788}
2789
2790static void
2791slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2792{
2793 AV *av = (AV *)SvRV (arg [0]);
2794
2795 if (items >= 2)
2796 {
2797 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2798 av_push (av, SvREFCNT_inc_NN (cb_cv));
2799
2800 if (SvIVX (AvARRAY (av)[0]))
2801 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2802
2803 frame->prepare = prepare_nop;
2804 frame->check = slf_check_nop;
2805 }
2806 else if (SvIVX (AvARRAY (av)[0]))
2807 {
2808 SvIVX (AvARRAY (av)[0]) = 0;
2809 frame->prepare = prepare_nop;
2810 frame->check = slf_check_nop;
2811 }
2812 else
2813 {
2814 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2815
2816 av_push (av, waiter);
2817
2818 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2819 frame->prepare = prepare_schedule;
2820 frame->check = slf_check_signal_wait;
2821 }
2822}
2823
2824/*****************************************************************************/
2825/* Coro::AIO */
2826
2827#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2828
2829/* helper storage struct */
2830struct io_state
2831{
2832 int errorno;
2833 I32 laststype; /* U16 in 5.10.0 */
2834 int laststatval;
2835 Stat_t statcache;
2836};
2837
2838static void
2839coro_aio_callback (pTHX_ CV *cv)
2840{
2841 dXSARGS;
2842 AV *state = (AV *)GENSUB_ARG;
2843 SV *coro = av_pop (state);
2844 SV *data_sv = newSV (sizeof (struct io_state));
2845
2846 av_extend (state, items - 1);
2847
2848 sv_upgrade (data_sv, SVt_PV);
2849 SvCUR_set (data_sv, sizeof (struct io_state));
2850 SvPOK_only (data_sv);
2851
2852 {
2853 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2854
2855 data->errorno = errno;
2856 data->laststype = PL_laststype;
2857 data->laststatval = PL_laststatval;
2858 data->statcache = PL_statcache;
2859 }
2860
2861 /* now build the result vector out of all the parameters and the data_sv */
2862 {
2863 int i;
2864
2865 for (i = 0; i < items; ++i)
2866 av_push (state, SvREFCNT_inc_NN (ST (i)));
2867 }
2868
2869 av_push (state, data_sv);
2870
2871 api_ready (aTHX_ coro);
2872 SvREFCNT_dec (coro);
2873 SvREFCNT_dec ((AV *)state);
2874}
2875
2876static int
2877slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2878{
2879 AV *state = (AV *)frame->data;
2880
2881 /* if we are about to throw, return early */
2882 /* this does not cancel the aio request, but at least */
2883 /* it quickly returns */
2884 if (CORO_THROW)
2885 return 0;
2886
2887 /* one element that is an RV? repeat! */
2888 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2889 return 1;
2890
2891 /* restore status */
2892 {
2893 SV *data_sv = av_pop (state);
2894 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2895
2896 errno = data->errorno;
2897 PL_laststype = data->laststype;
2898 PL_laststatval = data->laststatval;
2899 PL_statcache = data->statcache;
2900
2901 SvREFCNT_dec (data_sv);
2902 }
2903
2904 /* push result values */
2905 {
1853 dSP; 2906 dSP;
2907 int i;
1854 2908
2909 EXTEND (SP, AvFILLp (state) + 1);
2910 for (i = 0; i <= AvFILLp (state); ++i)
2911 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2912
2913 PUTBACK;
2914 }
2915
2916 return 0;
2917}
2918
2919static void
2920slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2921{
2922 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2923 SV *coro_hv = SvRV (coro_current);
2924 struct coro *coro = SvSTATE_hv (coro_hv);
2925
2926 /* put our coroutine id on the state arg */
2927 av_push (state, SvREFCNT_inc_NN (coro_hv));
2928
2929 /* first see whether we have a non-zero priority and set it as AIO prio */
2930 if (coro->prio)
2931 {
2932 dSP;
2933
2934 static SV *prio_cv;
2935 static SV *prio_sv;
2936
2937 if (expect_false (!prio_cv))
2938 {
2939 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2940 prio_sv = newSViv (0);
2941 }
2942
2943 PUSHMARK (SP);
2944 sv_setiv (prio_sv, coro->prio);
2945 XPUSHs (prio_sv);
2946
2947 PUTBACK;
2948 call_sv (prio_cv, G_VOID | G_DISCARD);
2949 }
2950
2951 /* now call the original request */
2952 {
2953 dSP;
2954 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2955 int i;
2956
1855 PUSHMARK (SP); 2957 PUSHMARK (SP);
1856 2958
1857 EXTEND (SP, 3); 2959 /* first push all args to the stack */
1858 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2960 EXTEND (SP, items + 1);
1859 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1860 PUSHs ((SV *)CvGV (ssl_cv));
1861 2961
1862 RETURNOP (ssl_restore.op_first); 2962 for (i = 0; i < items; ++i)
1863} 2963 PUSHs (arg [i]);
1864 2964
1865#define OPpENTERSUB_SSL 15 /* the part of op_private entersub hopefully doesn't use */ 2965 /* now push the callback closure */
2966 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1866 2967
1867/* declare prototype */ 2968 /* now call the AIO function - we assume our request is uncancelable */
1868XS(XS_Coro__State__set_stacklevel);
1869
1870/*
1871 * these not obviously related functions are all rolled into one
1872 * function to increase chances that they all will call transfer with the same
1873 * stack offset
1874 */
1875static OP *
1876pp_set_stacklevel (pTHX)
1877{
1878 dSP;
1879 struct transfer_args ta;
1880 SV **arg = PL_stack_base + TOPMARK + 1;
1881 int items = SP - arg; /* args without function object */
1882
1883 /* do a quick consistency check on the "function" object, and if it isn't */
1884 /* for us, divert to the real entersub */
1885 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1886 return PL_ppaddr[OP_ENTERSUB](aTHX);
1887
1888 /* pop args */
1889 SP = PL_stack_base + POPMARK;
1890
1891 if (!(PL_op->op_flags & OPf_STACKED))
1892 {
1893 /* ampersand-form of call, use @_ instead of stack */
1894 AV *av = GvAV (PL_defgv);
1895 arg = AvARRAY (av);
1896 items = AvFILLp (av) + 1;
1897 }
1898
1899 PUTBACK; 2969 PUTBACK;
1900 switch (PL_op->op_private & OPpENTERSUB_SSL) 2970 call_sv ((SV *)req, G_VOID | G_DISCARD);
1901 {
1902 case 0:
1903 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1904 break;
1905
1906 case 1:
1907 if (items != 2)
1908 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1909
1910 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1911 break;
1912
1913 case 2:
1914 prepare_schedule (aTHX_ &ta);
1915 break;
1916
1917 case 3:
1918 prepare_cede (aTHX_ &ta);
1919 break;
1920
1921 case 4:
1922 prepare_cede_notself (aTHX_ &ta);
1923 break;
1924 } 2971 }
1925 2972
1926 TRANSFER (ta, 0); 2973 /* now that the requets is going, we loop toll we have a result */
1927 SPAGAIN; 2974 frame->data = (void *)state;
1928 2975 frame->prepare = prepare_schedule;
1929skip: 2976 frame->check = slf_check_aio_req;
1930 PUTBACK;
1931 SSL_TAIL;
1932 SPAGAIN;
1933 RETURN;
1934} 2977}
1935 2978
1936static void 2979static void
1937coro_ssl_patch (pTHX_ CV *cv, int ix, SV **args, int items) 2980coro_aio_req_xs (pTHX_ CV *cv)
1938{ 2981{
1939 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel)); 2982 dXSARGS;
1940 2983
1941 assert (("FATAL: ssl call with illegal CV value", CvGV (cv))); 2984 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
1942 ssl_cv = cv;
1943 2985
1944 /* we patch the op, and then re-run the whole call */ 2986 XSRETURN_EMPTY;
1945 /* we have to put some dummy argument on the stack for this to work */
1946 ssl_restore.op_next = (OP *)&ssl_restore;
1947 ssl_restore.op_type = OP_NULL;
1948 ssl_restore.op_ppaddr = pp_restore;
1949 ssl_restore.op_first = PL_op;
1950
1951 ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1952 ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1953
1954 PL_op->op_ppaddr = pp_set_stacklevel;
1955 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1956
1957 PL_op = (OP *)&ssl_restore;
1958} 2987}
2988
2989/*****************************************************************************/
2990
2991#if CORO_CLONE
2992# include "clone.c"
2993#endif
1959 2994
1960MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2995MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1961 2996
1962PROTOTYPES: DISABLE 2997PROTOTYPES: DISABLE
1963 2998
1964BOOT: 2999BOOT:
1965{ 3000{
1966#ifdef USE_ITHREADS 3001#ifdef USE_ITHREADS
1967 MUTEX_INIT (&coro_lock);
1968# if CORO_PTHREAD 3002# if CORO_PTHREAD
1969 coro_thx = PERL_GET_CONTEXT; 3003 coro_thx = PERL_GET_CONTEXT;
1970# endif 3004# endif
1971#endif 3005#endif
1972 BOOT_PAGESIZE; 3006 BOOT_PAGESIZE;
3007
3008 cctx_current = cctx_new_empty ();
1973 3009
1974 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3010 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1975 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3011 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1976 3012
1977 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3013 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1993 main_top_env = PL_top_env; 3029 main_top_env = PL_top_env;
1994 3030
1995 while (main_top_env->je_prev) 3031 while (main_top_env->je_prev)
1996 main_top_env = main_top_env->je_prev; 3032 main_top_env = main_top_env->je_prev;
1997 3033
3034 {
3035 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3036
3037 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3038 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3039
3040 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3041 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3042 }
3043
1998 coroapi.ver = CORO_API_VERSION; 3044 coroapi.ver = CORO_API_VERSION;
1999 coroapi.rev = CORO_API_REVISION; 3045 coroapi.rev = CORO_API_REVISION;
3046
2000 coroapi.transfer = api_transfer; 3047 coroapi.transfer = api_transfer;
3048
3049 coroapi.sv_state = SvSTATE_;
3050 coroapi.execute_slf = api_execute_slf;
3051 coroapi.prepare_nop = prepare_nop;
3052 coroapi.prepare_schedule = prepare_schedule;
3053 coroapi.prepare_cede = prepare_cede;
3054 coroapi.prepare_cede_notself = prepare_cede_notself;
2001 3055
2002 { 3056 {
2003 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3057 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2004 3058
2005 if (!svp) croak ("Time::HiRes is required"); 3059 if (!svp) croak ("Time::HiRes is required");
2006 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3060 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2007 3061
2008 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3062 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3063
3064 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3065 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2009 } 3066 }
2010 3067
2011 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3068 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2012} 3069}
2013 3070
2014SV * 3071SV *
2015new (char *klass, ...) 3072new (char *klass, ...)
3073 ALIAS:
3074 Coro::new = 1
2016 CODE: 3075 CODE:
2017{ 3076{
2018 struct coro *coro; 3077 struct coro *coro;
2019 MAGIC *mg; 3078 MAGIC *mg;
2020 HV *hv; 3079 HV *hv;
3080 CV *cb;
2021 int i; 3081 int i;
3082
3083 if (items > 1)
3084 {
3085 cb = coro_sv_2cv (aTHX_ ST (1));
3086
3087 if (!ix)
3088 {
3089 if (CvISXSUB (cb))
3090 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3091
3092 if (!CvROOT (cb))
3093 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3094 }
3095 }
2022 3096
2023 Newz (0, coro, 1, struct coro); 3097 Newz (0, coro, 1, struct coro);
2024 coro->args = newAV (); 3098 coro->args = newAV ();
2025 coro->flags = CF_NEW; 3099 coro->flags = CF_NEW;
2026 3100
… …
2031 coro->hv = hv = newHV (); 3105 coro->hv = hv = newHV ();
2032 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 3106 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2033 mg->mg_flags |= MGf_DUP; 3107 mg->mg_flags |= MGf_DUP;
2034 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3108 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2035 3109
3110 if (items > 1)
3111 {
2036 av_extend (coro->args, items - 1); 3112 av_extend (coro->args, items - 1 + ix - 1);
3113
3114 if (ix)
3115 {
3116 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3117 cb = cv_coro_run;
3118 }
3119
3120 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3121
2037 for (i = 1; i < items; i++) 3122 for (i = 2; i < items; i++)
2038 av_push (coro->args, newSVsv (ST (i))); 3123 av_push (coro->args, newSVsv (ST (i)));
3124 }
2039} 3125}
2040 OUTPUT: 3126 OUTPUT:
2041 RETVAL 3127 RETVAL
2042 3128
2043void 3129void
2044_set_stacklevel (...) 3130transfer (...)
2045 ALIAS: 3131 PROTOTYPE: $$
2046 Coro::State::transfer = 1 3132 CODE:
2047 Coro::schedule = 2 3133 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2048 Coro::cede = 3
2049 Coro::cede_notself = 4
2050 CODE:
2051 coro_ssl_patch (aTHX_ cv, ix, &ST (0), items);
2052 3134
2053bool 3135bool
2054_destroy (SV *coro_sv) 3136_destroy (SV *coro_sv)
2055 CODE: 3137 CODE:
2056 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3138 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2061_exit (int code) 3143_exit (int code)
2062 PROTOTYPE: $ 3144 PROTOTYPE: $
2063 CODE: 3145 CODE:
2064 _exit (code); 3146 _exit (code);
2065 3147
3148SV *
3149clone (Coro::State coro)
3150 CODE:
3151{
3152#if CORO_CLONE
3153 struct coro *ncoro = coro_clone (aTHX_ coro);
3154 MAGIC *mg;
3155 /* TODO: too much duplication */
3156 ncoro->hv = newHV ();
3157 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3158 mg->mg_flags |= MGf_DUP;
3159 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3160#else
3161 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3162#endif
3163}
3164 OUTPUT:
3165 RETVAL
3166
2066int 3167int
2067cctx_stacksize (int new_stacksize = 0) 3168cctx_stacksize (int new_stacksize = 0)
3169 PROTOTYPE: ;$
2068 CODE: 3170 CODE:
2069 RETVAL = cctx_stacksize; 3171 RETVAL = cctx_stacksize;
2070 if (new_stacksize) 3172 if (new_stacksize)
2071 { 3173 {
2072 cctx_stacksize = new_stacksize; 3174 cctx_stacksize = new_stacksize;
… …
2075 OUTPUT: 3177 OUTPUT:
2076 RETVAL 3178 RETVAL
2077 3179
2078int 3180int
2079cctx_max_idle (int max_idle = 0) 3181cctx_max_idle (int max_idle = 0)
3182 PROTOTYPE: ;$
2080 CODE: 3183 CODE:
2081 RETVAL = cctx_max_idle; 3184 RETVAL = cctx_max_idle;
2082 if (max_idle > 1) 3185 if (max_idle > 1)
2083 cctx_max_idle = max_idle; 3186 cctx_max_idle = max_idle;
2084 OUTPUT: 3187 OUTPUT:
2085 RETVAL 3188 RETVAL
2086 3189
2087int 3190int
2088cctx_count () 3191cctx_count ()
3192 PROTOTYPE:
2089 CODE: 3193 CODE:
2090 RETVAL = cctx_count; 3194 RETVAL = cctx_count;
2091 OUTPUT: 3195 OUTPUT:
2092 RETVAL 3196 RETVAL
2093 3197
2094int 3198int
2095cctx_idle () 3199cctx_idle ()
3200 PROTOTYPE:
2096 CODE: 3201 CODE:
2097 RETVAL = cctx_idle; 3202 RETVAL = cctx_idle;
2098 OUTPUT: 3203 OUTPUT:
2099 RETVAL 3204 RETVAL
2100 3205
2101void 3206void
2102list () 3207list ()
3208 PROTOTYPE:
2103 PPCODE: 3209 PPCODE:
2104{ 3210{
2105 struct coro *coro; 3211 struct coro *coro;
2106 for (coro = coro_first; coro; coro = coro->next) 3212 for (coro = coro_first; coro; coro = coro->next)
2107 if (coro->hv) 3213 if (coro->hv)
… …
2114 eval = 1 3220 eval = 1
2115 CODE: 3221 CODE:
2116{ 3222{
2117 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3223 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2118 { 3224 {
2119 struct coro temp; 3225 struct coro *current = SvSTATE_current;
2120 3226
2121 if (!(coro->flags & CF_RUNNING)) 3227 if (current != coro)
2122 { 3228 {
2123 PUTBACK; 3229 PUTBACK;
2124 save_perl (aTHX_ &temp); 3230 save_perl (aTHX_ current);
2125 load_perl (aTHX_ coro); 3231 load_perl (aTHX_ coro);
3232 SPAGAIN;
2126 } 3233 }
2127 3234
2128 {
2129 dSP;
2130 ENTER;
2131 SAVETMPS;
2132 PUTBACK;
2133 PUSHSTACK; 3235 PUSHSTACK;
3236
2134 PUSHMARK (SP); 3237 PUSHMARK (SP);
3238 PUTBACK;
2135 3239
2136 if (ix) 3240 if (ix)
2137 eval_sv (coderef, 0); 3241 eval_sv (coderef, 0);
2138 else 3242 else
2139 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3243 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2140 3244
2141 POPSTACK; 3245 POPSTACK;
2142 SPAGAIN; 3246 SPAGAIN;
2143 FREETMPS;
2144 LEAVE;
2145 PUTBACK;
2146 }
2147 3247
2148 if (!(coro->flags & CF_RUNNING)) 3248 if (current != coro)
2149 { 3249 {
3250 PUTBACK;
2150 save_perl (aTHX_ coro); 3251 save_perl (aTHX_ coro);
2151 load_perl (aTHX_ &temp); 3252 load_perl (aTHX_ current);
2152 SPAGAIN; 3253 SPAGAIN;
2153 } 3254 }
2154 } 3255 }
2155} 3256}
2156 3257
… …
2160 ALIAS: 3261 ALIAS:
2161 is_ready = CF_READY 3262 is_ready = CF_READY
2162 is_running = CF_RUNNING 3263 is_running = CF_RUNNING
2163 is_new = CF_NEW 3264 is_new = CF_NEW
2164 is_destroyed = CF_DESTROYED 3265 is_destroyed = CF_DESTROYED
3266 is_suspended = CF_SUSPENDED
2165 CODE: 3267 CODE:
2166 RETVAL = boolSV (coro->flags & ix); 3268 RETVAL = boolSV (coro->flags & ix);
2167 OUTPUT: 3269 OUTPUT:
2168 RETVAL 3270 RETVAL
2169 3271
2170void 3272void
2171throw (Coro::State self, SV *throw = &PL_sv_undef) 3273throw (Coro::State self, SV *throw = &PL_sv_undef)
2172 PROTOTYPE: $;$ 3274 PROTOTYPE: $;$
2173 CODE: 3275 CODE:
3276{
3277 struct coro *current = SvSTATE_current;
3278 SV **throwp = self == current ? &CORO_THROW : &self->except;
2174 SvREFCNT_dec (self->throw); 3279 SvREFCNT_dec (*throwp);
3280 SvGETMAGIC (throw);
2175 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3281 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3282}
2176 3283
2177void 3284void
2178api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3285api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3286 PROTOTYPE: $;$
3287 C_ARGS: aTHX_ coro, flags
2179 3288
2180SV * 3289SV *
2181has_cctx (Coro::State coro) 3290has_cctx (Coro::State coro)
2182 PROTOTYPE: $ 3291 PROTOTYPE: $
2183 CODE: 3292 CODE:
2184 RETVAL = boolSV (!!coro->cctx); 3293 /* maybe manage the running flag differently */
3294 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2185 OUTPUT: 3295 OUTPUT:
2186 RETVAL 3296 RETVAL
2187 3297
2188int 3298int
2189is_traced (Coro::State coro) 3299is_traced (Coro::State coro)
… …
2207 OUTPUT: 3317 OUTPUT:
2208 RETVAL 3318 RETVAL
2209 3319
2210void 3320void
2211force_cctx () 3321force_cctx ()
3322 PROTOTYPE:
2212 CODE: 3323 CODE:
2213 struct coro *coro = SvSTATE (coro_current);
2214 coro->cctx->idle_sp = 0; 3324 cctx_current->idle_sp = 0;
2215 3325
2216void 3326void
2217swap_defsv (Coro::State self) 3327swap_defsv (Coro::State self)
2218 PROTOTYPE: $ 3328 PROTOTYPE: $
2219 ALIAS: 3329 ALIAS:
2220 swap_defav = 1 3330 swap_defav = 1
2221 CODE: 3331 CODE:
2222 if (!self->slot) 3332 if (!self->slot)
2223 croak ("cannot swap state with coroutine that has no saved state"); 3333 croak ("cannot swap state with coroutine that has no saved state,");
2224 else 3334 else
2225 { 3335 {
2226 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3336 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2227 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3337 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2228 3338
2229 SV *tmp = *src; *src = *dst; *dst = tmp; 3339 SV *tmp = *src; *src = *dst; *dst = tmp;
2230 } 3340 }
2231 3341
3342void
3343cancel (Coro::State self)
3344 CODE:
3345 coro_state_destroy (aTHX_ self);
3346 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3347
3348
3349SV *
3350enable_times (int enabled = enable_times)
3351 CODE:
3352{
3353 RETVAL = boolSV (enable_times);
3354
3355 if (enabled != enable_times)
3356 {
3357 enable_times = enabled;
3358
3359 coro_times_update ();
3360 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3361 }
3362}
3363 OUTPUT:
3364 RETVAL
3365
3366void
3367times (Coro::State self)
3368 PPCODE:
3369{
3370 struct coro *current = SvSTATE (coro_current);
3371
3372 if (expect_false (current == self))
3373 {
3374 coro_times_update ();
3375 coro_times_add (SvSTATE (coro_current));
3376 }
3377
3378 EXTEND (SP, 2);
3379 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3380 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3381
3382 if (expect_false (current == self))
3383 coro_times_sub (SvSTATE (coro_current));
3384}
3385
2232MODULE = Coro::State PACKAGE = Coro 3386MODULE = Coro::State PACKAGE = Coro
2233 3387
2234BOOT: 3388BOOT:
2235{ 3389{
2236 int i;
2237
2238 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2239 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3390 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2240 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3391 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2241 3392 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3393 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2242 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3394 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2243 SvREADONLY_on (coro_current); 3395 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3396 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3397 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3398 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3399
3400 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3401 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3402 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3403 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2244 3404
2245 coro_stash = gv_stashpv ("Coro", TRUE); 3405 coro_stash = gv_stashpv ("Coro", TRUE);
2246 3406
2247 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3407 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2248 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3408 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2249 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3409 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2250 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3410 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2251 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3411 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2252 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3412 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2253
2254 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2255 coro_ready[i] = newAV ();
2256 3413
2257 { 3414 {
2258 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3415 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2259 3416
2260 coroapi.schedule = api_schedule; 3417 coroapi.schedule = api_schedule;
3418 coroapi.schedule_to = api_schedule_to;
2261 coroapi.cede = api_cede; 3419 coroapi.cede = api_cede;
2262 coroapi.cede_notself = api_cede_notself; 3420 coroapi.cede_notself = api_cede_notself;
2263 coroapi.ready = api_ready; 3421 coroapi.ready = api_ready;
2264 coroapi.is_ready = api_is_ready; 3422 coroapi.is_ready = api_is_ready;
2265 coroapi.nready = &coro_nready; 3423 coroapi.nready = coro_nready;
2266 coroapi.current = coro_current; 3424 coroapi.current = coro_current;
2267 3425
2268 GCoroAPI = &coroapi; 3426 /*GCoroAPI = &coroapi;*/
2269 sv_setiv (sv, (IV)&coroapi); 3427 sv_setiv (sv, (IV)&coroapi);
2270 SvREADONLY_on (sv); 3428 SvREADONLY_on (sv);
2271 } 3429 }
2272} 3430}
3431
3432void
3433terminate (...)
3434 CODE:
3435 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3436
3437void
3438schedule (...)
3439 CODE:
3440 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3441
3442void
3443schedule_to (...)
3444 CODE:
3445 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3446
3447void
3448cede_to (...)
3449 CODE:
3450 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3451
3452void
3453cede (...)
3454 CODE:
3455 CORO_EXECUTE_SLF_XS (slf_init_cede);
3456
3457void
3458cede_notself (...)
3459 CODE:
3460 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2273 3461
2274void 3462void
2275_set_current (SV *current) 3463_set_current (SV *current)
2276 PROTOTYPE: $ 3464 PROTOTYPE: $
2277 CODE: 3465 CODE:
… …
2280 3468
2281void 3469void
2282_set_readyhook (SV *hook) 3470_set_readyhook (SV *hook)
2283 PROTOTYPE: $ 3471 PROTOTYPE: $
2284 CODE: 3472 CODE:
2285 LOCK;
2286 SvREFCNT_dec (coro_readyhook); 3473 SvREFCNT_dec (coro_readyhook);
3474 SvGETMAGIC (hook);
2287 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3475 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2288 UNLOCK;
2289 3476
2290int 3477int
2291prio (Coro::State coro, int newprio = 0) 3478prio (Coro::State coro, int newprio = 0)
3479 PROTOTYPE: $;$
2292 ALIAS: 3480 ALIAS:
2293 nice = 1 3481 nice = 1
2294 CODE: 3482 CODE:
2295{ 3483{
2296 RETVAL = coro->prio; 3484 RETVAL = coro->prio;
… …
2298 if (items > 1) 3486 if (items > 1)
2299 { 3487 {
2300 if (ix) 3488 if (ix)
2301 newprio = coro->prio - newprio; 3489 newprio = coro->prio - newprio;
2302 3490
2303 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3491 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2304 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3492 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2305 3493
2306 coro->prio = newprio; 3494 coro->prio = newprio;
2307 } 3495 }
2308} 3496}
2309 OUTPUT: 3497 OUTPUT:
… …
2311 3499
2312SV * 3500SV *
2313ready (SV *self) 3501ready (SV *self)
2314 PROTOTYPE: $ 3502 PROTOTYPE: $
2315 CODE: 3503 CODE:
2316 RETVAL = boolSV (api_ready (self)); 3504 RETVAL = boolSV (api_ready (aTHX_ self));
2317 OUTPUT: 3505 OUTPUT:
2318 RETVAL 3506 RETVAL
2319 3507
2320int 3508int
2321nready (...) 3509nready (...)
… …
2323 CODE: 3511 CODE:
2324 RETVAL = coro_nready; 3512 RETVAL = coro_nready;
2325 OUTPUT: 3513 OUTPUT:
2326 RETVAL 3514 RETVAL
2327 3515
2328# for async_pool speedup
2329void 3516void
2330_pool_1 (SV *cb) 3517suspend (Coro::State self)
3518 PROTOTYPE: $
2331 CODE: 3519 CODE:
2332{ 3520 self->flags |= CF_SUSPENDED;
2333 struct coro *coro = SvSTATE (coro_current);
2334 HV *hv = (HV *)SvRV (coro_current);
2335 AV *defav = GvAV (PL_defgv);
2336 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2337 AV *invoke_av;
2338 int i, len;
2339 3521
2340 if (!invoke) 3522void
3523resume (Coro::State self)
3524 PROTOTYPE: $
3525 CODE:
3526 self->flags &= ~CF_SUSPENDED;
3527
3528void
3529_pool_handler (...)
3530 CODE:
3531 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3532
3533void
3534async_pool (SV *cv, ...)
3535 PROTOTYPE: &@
3536 PPCODE:
3537{
3538 HV *hv = (HV *)av_pop (av_async_pool);
3539 AV *av = newAV ();
3540 SV *cb = ST (0);
3541 int i;
3542
3543 av_extend (av, items - 2);
3544 for (i = 1; i < items; ++i)
3545 av_push (av, SvREFCNT_inc_NN (ST (i)));
3546
3547 if ((SV *)hv == &PL_sv_undef)
2341 { 3548 {
2342 SV *old = PL_diehook; 3549 PUSHMARK (SP);
2343 PL_diehook = 0; 3550 EXTEND (SP, 2);
2344 SvREFCNT_dec (old); 3551 PUSHs (sv_Coro);
2345 croak ("\3async_pool terminate\2\n"); 3552 PUSHs ((SV *)cv_pool_handler);
3553 PUTBACK;
3554 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3555 SPAGAIN;
3556
3557 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2346 } 3558 }
2347 3559
2348 SvREFCNT_dec (coro->saved_deffh);
2349 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2350
2351 hv_store (hv, "desc", sizeof ("desc") - 1,
2352 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2353
2354 invoke_av = (AV *)SvRV (invoke);
2355 len = av_len (invoke_av);
2356
2357 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2358
2359 if (len > 0)
2360 { 3560 {
2361 av_fill (defav, len - 1); 3561 struct coro *coro = SvSTATE_hv (hv);
2362 for (i = 0; i < len; ++i) 3562
2363 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3563 assert (!coro->invoke_cb);
3564 assert (!coro->invoke_av);
3565 coro->invoke_cb = SvREFCNT_inc (cb);
3566 coro->invoke_av = av;
2364 } 3567 }
2365 3568
3569 api_ready (aTHX_ (SV *)hv);
3570
3571 if (GIMME_V != G_VOID)
3572 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3573 else
2366 SvREFCNT_dec (invoke); 3574 SvREFCNT_dec (hv);
2367} 3575}
2368 3576
2369void 3577SV *
2370_pool_2 (SV *cb) 3578rouse_cb ()
3579 PROTOTYPE:
2371 CODE: 3580 CODE:
2372{ 3581 RETVAL = coro_new_rouse_cb (aTHX);
2373 struct coro *coro = SvSTATE (coro_current);
2374
2375 sv_setsv (cb, &PL_sv_undef);
2376
2377 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2378 coro->saved_deffh = 0;
2379
2380 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2381 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2382 {
2383 SV *old = PL_diehook;
2384 PL_diehook = 0;
2385 SvREFCNT_dec (old);
2386 croak ("\3async_pool terminate\2\n");
2387 }
2388
2389 av_clear (GvAV (PL_defgv));
2390 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2391 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2392
2393 coro->prio = 0;
2394
2395 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2396 api_trace (coro_current, 0);
2397
2398 av_push (av_async_pool, newSVsv (coro_current));
2399}
2400
2401#if 0
2402
2403void
2404_generator_call (...)
2405 PROTOTYPE: @
2406 PPCODE:
2407 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2408 xxxx
2409 abort ();
2410
2411SV *
2412gensub (SV *sub, ...)
2413 PROTOTYPE: &;@
2414 CODE:
2415{
2416 struct coro *coro;
2417 MAGIC *mg;
2418 CV *xcv;
2419 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2420 int i;
2421
2422 CvGV (ncv) = CvGV (cv);
2423 CvFILE (ncv) = CvFILE (cv);
2424
2425 Newz (0, coro, 1, struct coro);
2426 coro->args = newAV ();
2427 coro->flags = CF_NEW;
2428
2429 av_extend (coro->args, items - 1);
2430 for (i = 1; i < items; i++)
2431 av_push (coro->args, newSVsv (ST (i)));
2432
2433 CvISXSUB_on (ncv);
2434 CvXSUBANY (ncv).any_ptr = (void *)coro;
2435
2436 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2437
2438 CvXSUB (ncv) = CvXSUB (xcv);
2439 CvANON_on (ncv);
2440
2441 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2442 RETVAL = newRV_noinc ((SV *)ncv);
2443}
2444 OUTPUT: 3582 OUTPUT:
2445 RETVAL 3583 RETVAL
2446 3584
2447#endif
2448
2449
2450MODULE = Coro::State PACKAGE = Coro::AIO
2451
2452void 3585void
2453_get_state (SV *self) 3586rouse_wait (...)
3587 PROTOTYPE: ;$
2454 PPCODE: 3588 PPCODE:
2455{ 3589 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2456 AV *defav = GvAV (PL_defgv);
2457 AV *av = newAV ();
2458 int i;
2459 SV *data_sv = newSV (sizeof (struct io_state));
2460 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2461 SvCUR_set (data_sv, sizeof (struct io_state));
2462 SvPOK_only (data_sv);
2463
2464 data->errorno = errno;
2465 data->laststype = PL_laststype;
2466 data->laststatval = PL_laststatval;
2467 data->statcache = PL_statcache;
2468
2469 av_extend (av, AvFILLp (defav) + 1 + 1);
2470
2471 for (i = 0; i <= AvFILLp (defav); ++i)
2472 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2473
2474 av_push (av, data_sv);
2475
2476 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2477
2478 api_ready (self);
2479}
2480 3590
2481void 3591void
2482_set_state (SV *state) 3592on_enter (SV *block)
3593 ALIAS:
3594 on_leave = 1
2483 PROTOTYPE: $ 3595 PROTOTYPE: &
3596 CODE:
3597{
3598 struct coro *coro = SvSTATE_current;
3599 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3600
3601 block = (SV *)coro_sv_2cv (aTHX_ block);
3602
3603 if (!*avp)
3604 *avp = newAV ();
3605
3606 av_push (*avp, SvREFCNT_inc (block));
3607
3608 if (!ix)
3609 on_enterleave_call (aTHX_ block);
3610
3611 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3612 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3613 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3614}
3615
3616
3617MODULE = Coro::State PACKAGE = PerlIO::cede
3618
3619BOOT:
3620 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3621
3622
3623MODULE = Coro::State PACKAGE = Coro::Semaphore
3624
3625SV *
3626new (SV *klass, SV *count = 0)
3627 CODE:
3628{
3629 int semcnt = 1;
3630
3631 if (count)
3632 {
3633 SvGETMAGIC (count);
3634
3635 if (SvOK (count))
3636 semcnt = SvIV (count);
3637 }
3638
3639 RETVAL = sv_bless (
3640 coro_waitarray_new (aTHX_ semcnt),
3641 GvSTASH (CvGV (cv))
3642 );
3643}
3644 OUTPUT:
3645 RETVAL
3646
3647# helper for Coro::Channel and others
3648SV *
3649_alloc (int count)
3650 CODE:
3651 RETVAL = coro_waitarray_new (aTHX_ count);
3652 OUTPUT:
3653 RETVAL
3654
3655SV *
3656count (SV *self)
3657 CODE:
3658 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3659 OUTPUT:
3660 RETVAL
3661
3662void
3663up (SV *self, int adjust = 1)
3664 ALIAS:
3665 adjust = 1
3666 CODE:
3667 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3668
3669void
3670down (...)
3671 CODE:
3672 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3673
3674void
3675wait (...)
3676 CODE:
3677 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3678
3679void
3680try (SV *self)
3681 PPCODE:
3682{
3683 AV *av = (AV *)SvRV (self);
3684 SV *count_sv = AvARRAY (av)[0];
3685 IV count = SvIVX (count_sv);
3686
3687 if (count > 0)
3688 {
3689 --count;
3690 SvIVX (count_sv) = count;
3691 XSRETURN_YES;
3692 }
3693 else
3694 XSRETURN_NO;
3695}
3696
3697void
3698waiters (SV *self)
3699 PPCODE:
3700{
3701 AV *av = (AV *)SvRV (self);
3702 int wcount = AvFILLp (av) + 1 - 1;
3703
3704 if (GIMME_V == G_SCALAR)
3705 XPUSHs (sv_2mortal (newSViv (wcount)));
3706 else
3707 {
3708 int i;
3709 EXTEND (SP, wcount);
3710 for (i = 1; i <= wcount; ++i)
3711 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3712 }
3713}
3714
3715MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3716
3717void
3718_may_delete (SV *sem, int count, int extra_refs)
2484 PPCODE: 3719 PPCODE:
2485{ 3720{
2486 AV *av = (AV *)SvRV (state); 3721 AV *av = (AV *)SvRV (sem);
2487 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2488 int i;
2489 3722
2490 errno = data->errorno; 3723 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2491 PL_laststype = data->laststype; 3724 && AvFILLp (av) == 0 /* no waiters, just count */
2492 PL_laststatval = data->laststatval; 3725 && SvIV (AvARRAY (av)[0]) == count)
2493 PL_statcache = data->statcache; 3726 XSRETURN_YES;
2494 3727
3728 XSRETURN_NO;
3729}
3730
3731MODULE = Coro::State PACKAGE = Coro::Signal
3732
3733SV *
3734new (SV *klass)
3735 CODE:
3736 RETVAL = sv_bless (
3737 coro_waitarray_new (aTHX_ 0),
3738 GvSTASH (CvGV (cv))
3739 );
3740 OUTPUT:
3741 RETVAL
3742
3743void
3744wait (...)
3745 CODE:
3746 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3747
3748void
3749broadcast (SV *self)
3750 CODE:
3751{
3752 AV *av = (AV *)SvRV (self);
3753 coro_signal_wake (aTHX_ av, AvFILLp (av));
3754}
3755
3756void
3757send (SV *self)
3758 CODE:
3759{
3760 AV *av = (AV *)SvRV (self);
3761
2495 EXTEND (SP, AvFILLp (av)); 3762 if (AvFILLp (av))
2496 for (i = 0; i < AvFILLp (av); ++i) 3763 coro_signal_wake (aTHX_ av, 1);
2497 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3764 else
3765 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2498} 3766}
3767
3768IV
3769awaited (SV *self)
3770 CODE:
3771 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3772 OUTPUT:
3773 RETVAL
2499 3774
2500 3775
2501MODULE = Coro::State PACKAGE = Coro::AnyEvent 3776MODULE = Coro::State PACKAGE = Coro::AnyEvent
2502 3777
2503BOOT: 3778BOOT:
2504 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3779 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2505 3780
2506SV * 3781void
2507_schedule (...) 3782_schedule (...)
2508 PROTOTYPE: @
2509 CODE: 3783 CODE:
2510{ 3784{
2511 static int incede; 3785 static int incede;
2512 3786
2513 api_cede_notself (); 3787 api_cede_notself (aTHX);
2514 3788
2515 ++incede; 3789 ++incede;
2516 while (coro_nready >= incede && api_cede ()) 3790 while (coro_nready >= incede && api_cede (aTHX))
2517 ; 3791 ;
2518 3792
2519 sv_setsv (sv_activity, &PL_sv_undef); 3793 sv_setsv (sv_activity, &PL_sv_undef);
2520 if (coro_nready >= incede) 3794 if (coro_nready >= incede)
2521 { 3795 {
2522 PUSHMARK (SP); 3796 PUSHMARK (SP);
2523 PUTBACK; 3797 PUTBACK;
2524 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3798 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2525 SPAGAIN;
2526 } 3799 }
2527 3800
2528 --incede; 3801 --incede;
2529} 3802}
2530 3803
2531 3804
2532MODULE = Coro::State PACKAGE = PerlIO::cede 3805MODULE = Coro::State PACKAGE = Coro::AIO
2533 3806
2534BOOT: 3807void
2535 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3808_register (char *target, char *proto, SV *req)
3809 CODE:
3810{
3811 CV *req_cv = coro_sv_2cv (aTHX_ req);
3812 /* newXSproto doesn't return the CV on 5.8 */
3813 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3814 sv_setpv ((SV *)slf_cv, proto);
3815 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3816}
2536 3817

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