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Comparing Coro/Coro/State.xs (file contents):
Revision 1.393 by root, Fri Apr 29 17:38:56 2011 UTC vs.
Revision 1.409 by root, Sun Jun 12 04:29:15 2011 UTC

12#include "perl.h" 12#include "perl.h"
13#include "XSUB.h" 13#include "XSUB.h"
14#include "perliol.h" 14#include "perliol.h"
15 15
16#include "schmorp.h" 16#include "schmorp.h"
17#include "ecb.h"
17 18
19#include <stddef.h>
18#include <stdio.h> 20#include <stdio.h>
19#include <errno.h> 21#include <errno.h>
20#include <assert.h> 22#include <assert.h>
21 23
22#ifndef SVs_PADSTALE 24#ifndef SVs_PADSTALE
86# define STACKLEVEL ((void *)&stacklevel) 88# define STACKLEVEL ((void *)&stacklevel)
87#endif 89#endif
88 90
89#define IN_DESTRUCT PL_dirty 91#define IN_DESTRUCT PL_dirty
90 92
91#if __GNUC__ >= 3
92# define attribute(x) __attribute__(x)
93# define expect(expr,value) __builtin_expect ((expr), (value))
94# define INLINE static inline
95#else
96# define attribute(x)
97# define expect(expr,value) (expr)
98# define INLINE static
99#endif
100
101#define expect_false(expr) expect ((expr) != 0, 0)
102#define expect_true(expr) expect ((expr) != 0, 1)
103
104#define NOINLINE attribute ((noinline))
105
106#include "CoroAPI.h" 93#include "CoroAPI.h"
107#define GCoroAPI (&coroapi) /* very sneaky */ 94#define GCoroAPI (&coroapi) /* very sneaky */
108 95
109#ifdef USE_ITHREADS 96#ifdef USE_ITHREADS
110# if CORO_PTHREAD 97# if CORO_PTHREAD
111static void *coro_thx; 98static void *coro_thx;
112# endif 99# endif
113#endif 100#endif
101
102/* used in state.h */
103#define VAR(name,type) VARx(name, PL_ ## name, type)
114 104
115#ifdef __linux 105#ifdef __linux
116# include <time.h> /* for timespec */ 106# include <time.h> /* for timespec */
117# include <syscall.h> /* for SYS_* */ 107# include <syscall.h> /* for SYS_* */
118# ifdef SYS_clock_gettime 108# ifdef SYS_clock_gettime
126static void (*u2time)(pTHX_ UV ret[2]); 116static void (*u2time)(pTHX_ UV ret[2]);
127 117
128/* we hijack an hopefully unused CV flag for our purposes */ 118/* we hijack an hopefully unused CV flag for our purposes */
129#define CVf_SLF 0x4000 119#define CVf_SLF 0x4000
130static OP *pp_slf (pTHX); 120static OP *pp_slf (pTHX);
121static void slf_destroy (pTHX_ struct coro *coro);
131 122
132static U32 cctx_gen; 123static U32 cctx_gen;
133static size_t cctx_stacksize = CORO_STACKSIZE; 124static size_t cctx_stacksize = CORO_STACKSIZE;
134static struct CoroAPI coroapi; 125static struct CoroAPI coroapi;
135static AV *main_mainstack; /* used to differentiate between $main and others */ 126static AV *main_mainstack; /* used to differentiate between $main and others */
165static char times_valid; 156static char times_valid;
166 157
167static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
168static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
169 160
170enum { 161enum
162{
171 CC_MAPPED = 0x01, 163 CC_MAPPED = 0x01,
172 CC_NOREUSE = 0x02, /* throw this away after tracing */ 164 CC_NOREUSE = 0x02, /* throw this away after tracing */
173 CC_TRACE = 0x04, 165 CC_TRACE = 0x04,
174 CC_TRACE_SUB = 0x08, /* trace sub calls */ 166 CC_TRACE_SUB = 0x08, /* trace sub calls */
175 CC_TRACE_LINE = 0x10, /* trace each statement */ 167 CC_TRACE_LINE = 0x10, /* trace each statement */
200 192
201static coro_cctx *cctx_current; /* the currently running cctx */ 193static coro_cctx *cctx_current; /* the currently running cctx */
202 194
203/*****************************************************************************/ 195/*****************************************************************************/
204 196
197static MGVTBL coro_state_vtbl;
198
205enum { 199enum
200{
206 CF_RUNNING = 0x0001, /* coroutine is running */ 201 CF_RUNNING = 0x0001, /* coroutine is running */
207 CF_READY = 0x0002, /* coroutine is ready */ 202 CF_READY = 0x0002, /* coroutine is ready */
208 CF_NEW = 0x0004, /* has never been switched to */ 203 CF_NEW = 0x0004, /* has never been switched to */
209 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 204 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
210 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */ 205 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
211 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */ 206 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
212}; 207};
213 208
214/* the structure where most of the perl state is stored, overlaid on the cxstack */ 209/* the structure where most of the perl state is stored, overlaid on the cxstack */
215typedef struct 210typedef struct
216{ 211{
217 SV *defsv;
218 AV *defav;
219 SV *errsv;
220 SV *irsgv;
221 HV *hinthv;
222#define VAR(name,type) type name; 212#define VARx(name,expr,type) type name;
223# include "state.h" 213# include "state.h"
224#undef VAR 214#undef VARx
225} perl_slots; 215} perl_slots;
226 216
217// how many context stack entries do we need for perl_slots
227#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 218#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
228 219
229/* this is a structure representing a perl-level coroutine */ 220/* this is a structure representing a perl-level coroutine */
230struct coro { 221struct coro
222{
231 /* the C coroutine allocated to this perl coroutine, if any */ 223 /* the C coroutine allocated to this perl coroutine, if any */
232 coro_cctx *cctx; 224 coro_cctx *cctx;
233 225
234 /* ready queue */ 226 /* ready queue */
235 struct coro *next_ready; 227 struct coro *next_ready;
237 /* state data */ 229 /* state data */
238 struct CoroSLF slf_frame; /* saved slf frame */ 230 struct CoroSLF slf_frame; /* saved slf frame */
239 AV *mainstack; 231 AV *mainstack;
240 perl_slots *slot; /* basically the saved sp */ 232 perl_slots *slot; /* basically the saved sp */
241 233
242 CV *startcv; /* the CV to execute */ 234 CV *startcv; /* the CV to execute */
243 AV *args; /* data associated with this coroutine (initial args) */ 235 AV *args; /* data associated with this coroutine (initial args) */
244 int refcnt; /* coroutines are refcounted, yes */
245 int flags; /* CF_ flags */ 236 int flags; /* CF_ flags */
246 HV *hv; /* the perl hash associated with this coro, if any */ 237 HV *hv; /* the perl hash associated with this coro, if any */
247 void (*on_destroy)(pTHX_ struct coro *coro); /* for temporary use by xs in critical sections */
248 238
249 /* statistics */ 239 /* statistics */
250 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
251 241
252 /* coro process data */ 242 /* coro process data */
253 int prio; 243 int prio;
254 SV *except; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
255 SV *rouse_cb; 245 SV *rouse_cb; /* last rouse callback */
246 AV *on_destroy; /* callbacks or coros to notify on destroy */
247 AV *status; /* the exit status list */
256 248
257 /* async_pool */ 249 /* async_pool */
258 SV *saved_deffh; 250 SV *saved_deffh;
259 SV *invoke_cb; 251 SV *invoke_cb;
260 AV *invoke_av; 252 AV *invoke_av;
292 284
293/* for Coro.pm */ 285/* for Coro.pm */
294static SV *coro_current; 286static SV *coro_current;
295static SV *coro_readyhook; 287static SV *coro_readyhook;
296static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */ 288static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
297static CV *cv_coro_run, *cv_coro_terminate; 289static CV *cv_coro_run;
298static struct coro *coro_first; 290static struct coro *coro_first;
299#define coro_nready coroapi.nready 291#define coro_nready coroapi.nready
292
293/** JIT *********************************************************************/
294
295#if CORO_JIT
296 #ifndef CORO_JIT_TYPE
297 #if __x86_64 && (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris)
298 #define CORO_JIT_TYPE "amd64-unix"
299 typedef void (*load_save_perl_slots_type)(perl_slots *);
300 #elif __i386 && (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris)
301 #define CORO_JIT_TYPE "x86-unix"
302 typedef void (*load_save_perl_slots_type)(perl_slots *);
303 #else
304 x x x x
305 #undef CORO_JIT
306 #endif
307 #endif
308#endif
309
310#if CORO_JIT
311static load_save_perl_slots_type load_perl_slots, save_perl_slots;
312#endif
300 313
301/** Coro::Select ************************************************************/ 314/** Coro::Select ************************************************************/
302 315
303static OP *(*coro_old_pp_sselect) (pTHX); 316static OP *(*coro_old_pp_sselect) (pTHX);
304static SV *coro_select_select; 317static SV *coro_select_select;
320 333
321/** time stuff **************************************************************/ 334/** time stuff **************************************************************/
322 335
323#ifdef HAS_GETTIMEOFDAY 336#ifdef HAS_GETTIMEOFDAY
324 337
325static void 338ECB_INLINE void
326coro_u2time (pTHX_ UV ret[2]) 339coro_u2time (pTHX_ UV ret[2])
327{ 340{
328 struct timeval tv; 341 struct timeval tv;
329 gettimeofday (&tv, 0); 342 gettimeofday (&tv, 0);
330 343
331 ret [0] = tv.tv_sec; 344 ret [0] = tv.tv_sec;
332 ret [1] = tv.tv_usec; 345 ret [1] = tv.tv_usec;
333} 346}
334 347
335static double 348ECB_INLINE double
336coro_nvtime () 349coro_nvtime ()
337{ 350{
338 struct timeval tv; 351 struct timeval tv;
339 gettimeofday (&tv, 0); 352 gettimeofday (&tv, 0);
340 353
341 return tv.tv_sec + tv.tv_usec * 1e-6; 354 return tv.tv_sec + tv.tv_usec * 1e-6;
342} 355}
343 356
344static void 357ECB_INLINE void
345time_init (pTHX) 358time_init (pTHX)
346{ 359{
347 nvtime = coro_nvtime; 360 nvtime = coro_nvtime;
348 u2time = coro_u2time; 361 u2time = coro_u2time;
349} 362}
350 363
351#else 364#else
352 365
353static void 366ECB_INLINE void
354time_init (pTHX) 367time_init (pTHX)
355{ 368{
356 SV **svp; 369 SV **svp;
357 370
358 require_pv ("Time/HiRes.pm"); 371 require_pv ("Time/HiRes.pm");
370 383
371#endif 384#endif
372 385
373/** lowlevel stuff **********************************************************/ 386/** lowlevel stuff **********************************************************/
374 387
375static SV * 388static SV * ecb_noinline
376coro_get_sv (pTHX_ const char *name, int create) 389coro_get_sv (pTHX_ const char *name, int create)
377{ 390{
378#if PERL_VERSION_ATLEAST (5,10,0) 391#if PERL_VERSION_ATLEAST (5,10,0)
379 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 392 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
380 get_sv (name, create); 393 get_sv (name, create);
381#endif 394#endif
382 return get_sv (name, create); 395 return get_sv (name, create);
383} 396}
384 397
385static AV * 398static AV * ecb_noinline
386coro_get_av (pTHX_ const char *name, int create) 399coro_get_av (pTHX_ const char *name, int create)
387{ 400{
388#if PERL_VERSION_ATLEAST (5,10,0) 401#if PERL_VERSION_ATLEAST (5,10,0)
389 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 402 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
390 get_av (name, create); 403 get_av (name, create);
391#endif 404#endif
392 return get_av (name, create); 405 return get_av (name, create);
393} 406}
394 407
395static HV * 408static HV * ecb_noinline
396coro_get_hv (pTHX_ const char *name, int create) 409coro_get_hv (pTHX_ const char *name, int create)
397{ 410{
398#if PERL_VERSION_ATLEAST (5,10,0) 411#if PERL_VERSION_ATLEAST (5,10,0)
399 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 412 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
400 get_hv (name, create); 413 get_hv (name, create);
401#endif 414#endif
402 return get_hv (name, create); 415 return get_hv (name, create);
403} 416}
404 417
405INLINE void 418ECB_INLINE void
406coro_times_update () 419coro_times_update ()
407{ 420{
408#ifdef coro_clock_gettime 421#ifdef coro_clock_gettime
409 struct timespec ts; 422 struct timespec ts;
410 423
423 time_real [0] = tv [0]; 436 time_real [0] = tv [0];
424 time_real [1] = tv [1] * 1000; 437 time_real [1] = tv [1] * 1000;
425#endif 438#endif
426} 439}
427 440
428INLINE void 441ECB_INLINE void
429coro_times_add (struct coro *c) 442coro_times_add (struct coro *c)
430{ 443{
431 c->t_real [1] += time_real [1]; 444 c->t_real [1] += time_real [1];
432 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; } 445 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
433 c->t_real [0] += time_real [0]; 446 c->t_real [0] += time_real [0];
435 c->t_cpu [1] += time_cpu [1]; 448 c->t_cpu [1] += time_cpu [1];
436 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; } 449 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
437 c->t_cpu [0] += time_cpu [0]; 450 c->t_cpu [0] += time_cpu [0];
438} 451}
439 452
440INLINE void 453ECB_INLINE void
441coro_times_sub (struct coro *c) 454coro_times_sub (struct coro *c)
442{ 455{
443 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; } 456 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
444 c->t_real [1] -= time_real [1]; 457 c->t_real [1] -= time_real [1];
445 c->t_real [0] -= time_real [0]; 458 c->t_real [0] -= time_real [0];
453/* magic glue */ 466/* magic glue */
454 467
455#define CORO_MAGIC_type_cv 26 468#define CORO_MAGIC_type_cv 26
456#define CORO_MAGIC_type_state PERL_MAGIC_ext 469#define CORO_MAGIC_type_state PERL_MAGIC_ext
457 470
458#define CORO_MAGIC_NN(sv, type) \ 471#define CORO_MAGIC_NN(sv, type) \
459 (expect_true (SvMAGIC (sv)->mg_type == type) \ 472 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
460 ? SvMAGIC (sv) \ 473 ? SvMAGIC (sv) \
461 : mg_find (sv, type)) 474 : mg_find (sv, type))
462 475
463#define CORO_MAGIC(sv, type) \ 476#define CORO_MAGIC(sv, type) \
464 (expect_true (SvMAGIC (sv)) \ 477 (ecb_expect_true (SvMAGIC (sv)) \
465 ? CORO_MAGIC_NN (sv, type) \ 478 ? CORO_MAGIC_NN (sv, type) \
466 : 0) 479 : 0)
467 480
468#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 481#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
469#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) 482#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
470 483
484ECB_INLINE MAGIC *
485SvSTATEhv_p (pTHX_ SV *coro)
486{
487 MAGIC *mg;
488
489 if (ecb_expect_true (
490 SvTYPE (coro) == SVt_PVHV
491 && (mg = CORO_MAGIC_state (coro))
492 && mg->mg_virtual == &coro_state_vtbl
493 ))
494 return mg;
495
496 return 0;
497}
498
471INLINE struct coro * 499ECB_INLINE struct coro *
472SvSTATE_ (pTHX_ SV *coro) 500SvSTATE_ (pTHX_ SV *coro)
473{ 501{
474 HV *stash;
475 MAGIC *mg; 502 MAGIC *mg;
476 503
477 if (SvROK (coro)) 504 if (SvROK (coro))
478 coro = SvRV (coro); 505 coro = SvRV (coro);
479 506
480 if (expect_false (SvTYPE (coro) != SVt_PVHV)) 507 mg = SvSTATEhv_p (aTHX_ coro);
508 if (!mg)
481 croak ("Coro::State object required"); 509 croak ("Coro::State object required");
482 510
483 stash = SvSTASH (coro);
484 if (expect_false (stash != coro_stash && stash != coro_state_stash))
485 {
486 /* very slow, but rare, check */
487 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
488 croak ("Coro::State object required");
489 }
490
491 mg = CORO_MAGIC_state (coro);
492 return (struct coro *)mg->mg_ptr; 511 return (struct coro *)mg->mg_ptr;
493} 512}
494 513
495#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 514#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
496 515
499#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) 518#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
500 519
501/*****************************************************************************/ 520/*****************************************************************************/
502/* padlist management and caching */ 521/* padlist management and caching */
503 522
504static AV * 523ECB_INLINE AV *
505coro_derive_padlist (pTHX_ CV *cv) 524coro_derive_padlist (pTHX_ CV *cv)
506{ 525{
507 AV *padlist = CvPADLIST (cv); 526 AV *padlist = CvPADLIST (cv);
508 AV *newpadlist, *newpad; 527 AV *newpadlist, *newpad;
509 528
521 av_store (newpadlist, 1, (SV *)newpad); 540 av_store (newpadlist, 1, (SV *)newpad);
522 541
523 return newpadlist; 542 return newpadlist;
524} 543}
525 544
526static void 545ECB_INLINE void
527free_padlist (pTHX_ AV *padlist) 546free_padlist (pTHX_ AV *padlist)
528{ 547{
529 /* may be during global destruction */ 548 /* may be during global destruction */
530 if (!IN_DESTRUCT) 549 if (!IN_DESTRUCT)
531 { 550 {
574 0, 0, 0, 0, 593 0, 0, 0, 0,
575 coro_cv_free 594 coro_cv_free
576}; 595};
577 596
578/* the next two functions merely cache the padlists */ 597/* the next two functions merely cache the padlists */
579static void 598ECB_INLINE void
580get_padlist (pTHX_ CV *cv) 599get_padlist (pTHX_ CV *cv)
581{ 600{
582 MAGIC *mg = CORO_MAGIC_cv (cv); 601 MAGIC *mg = CORO_MAGIC_cv (cv);
583 AV *av; 602 AV *av;
584 603
585 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 604 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
586 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 605 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
587 else 606 else
588 { 607 {
589#if CORO_PREFER_PERL_FUNCTIONS 608#if CORO_PREFER_PERL_FUNCTIONS
590 /* this is probably cleaner? but also slower! */ 609 /* this is probably cleaner? but also slower! */
597 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); 616 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
598#endif 617#endif
599 } 618 }
600} 619}
601 620
602static void 621ECB_INLINE void
603put_padlist (pTHX_ CV *cv) 622put_padlist (pTHX_ CV *cv)
604{ 623{
605 MAGIC *mg = CORO_MAGIC_cv (cv); 624 MAGIC *mg = CORO_MAGIC_cv (cv);
606 AV *av; 625 AV *av;
607 626
608 if (expect_false (!mg)) 627 if (ecb_expect_false (!mg))
609 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 628 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
610 629
611 av = (AV *)mg->mg_obj; 630 av = (AV *)mg->mg_obj;
612 631
613 if (expect_false (AvFILLp (av) >= AvMAX (av))) 632 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
614 av_extend (av, AvFILLp (av) + 1); 633 av_extend (av, AvFILLp (av) + 1);
615 634
616 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 635 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
617} 636}
618 637
663 } 682 }
664#endif 683#endif
665 } 684 }
666} 685}
667 686
668#define SWAP_SVS(coro) \ 687#define SWAP_SVS(coro) \
669 if (expect_false ((coro)->swap_sv)) \ 688 if (ecb_expect_false ((coro)->swap_sv)) \
670 swap_svs (aTHX_ (coro)) 689 swap_svs (aTHX_ (coro))
671 690
672static void 691static void
673on_enterleave_call (pTHX_ SV *cb); 692on_enterleave_call (pTHX_ SV *cb);
674 693
678 perl_slots *slot = c->slot; 697 perl_slots *slot = c->slot;
679 c->slot = 0; 698 c->slot = 0;
680 699
681 PL_mainstack = c->mainstack; 700 PL_mainstack = c->mainstack;
682 701
683 GvSV (PL_defgv) = slot->defsv; 702#if CORO_JIT
684 GvAV (PL_defgv) = slot->defav; 703 load_perl_slots (slot);
685 GvSV (PL_errgv) = slot->errsv; 704#else
686 GvSV (irsgv) = slot->irsgv;
687 GvHV (PL_hintgv) = slot->hinthv;
688
689 #define VAR(name,type) PL_ ## name = slot->name; 705 #define VARx(name,expr,type) expr = slot->name;
690 # include "state.h" 706 # include "state.h"
691 #undef VAR 707 #undef VARx
708#endif
692 709
693 { 710 {
694 dSP; 711 dSP;
695 712
696 CV *cv; 713 CV *cv;
697 714
698 /* now do the ugly restore mess */ 715 /* now do the ugly restore mess */
699 while (expect_true (cv = (CV *)POPs)) 716 while (ecb_expect_true (cv = (CV *)POPs))
700 { 717 {
701 put_padlist (aTHX_ cv); /* mark this padlist as available */ 718 put_padlist (aTHX_ cv); /* mark this padlist as available */
702 CvDEPTH (cv) = PTR2IV (POPs); 719 CvDEPTH (cv) = PTR2IV (POPs);
703 CvPADLIST (cv) = (AV *)POPs; 720 CvPADLIST (cv) = (AV *)POPs;
704 } 721 }
707 } 724 }
708 725
709 slf_frame = c->slf_frame; 726 slf_frame = c->slf_frame;
710 CORO_THROW = c->except; 727 CORO_THROW = c->except;
711 728
712 if (expect_false (enable_times)) 729 if (ecb_expect_false (enable_times))
713 { 730 {
714 if (expect_false (!times_valid)) 731 if (ecb_expect_false (!times_valid))
715 coro_times_update (); 732 coro_times_update ();
716 733
717 coro_times_sub (c); 734 coro_times_sub (c);
718 } 735 }
719 736
720 if (expect_false (c->on_enter)) 737 if (ecb_expect_false (c->on_enter))
721 { 738 {
722 int i; 739 int i;
723 740
724 for (i = 0; i <= AvFILLp (c->on_enter); ++i) 741 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
725 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]); 742 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
731static void 748static void
732save_perl (pTHX_ Coro__State c) 749save_perl (pTHX_ Coro__State c)
733{ 750{
734 SWAP_SVS (c); 751 SWAP_SVS (c);
735 752
736 if (expect_false (c->on_leave)) 753 if (ecb_expect_false (c->on_leave))
737 { 754 {
738 int i; 755 int i;
739 756
740 for (i = AvFILLp (c->on_leave); i >= 0; --i) 757 for (i = AvFILLp (c->on_leave); i >= 0; --i)
741 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]); 758 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
742 } 759 }
743 760
744 times_valid = 0; 761 times_valid = 0;
745 762
746 if (expect_false (enable_times)) 763 if (ecb_expect_false (enable_times))
747 { 764 {
748 coro_times_update (); times_valid = 1; 765 coro_times_update (); times_valid = 1;
749 coro_times_add (c); 766 coro_times_add (c);
750 } 767 }
751 768
765 782
766 XPUSHs (Nullsv); 783 XPUSHs (Nullsv);
767 /* this loop was inspired by pp_caller */ 784 /* this loop was inspired by pp_caller */
768 for (;;) 785 for (;;)
769 { 786 {
770 while (expect_true (cxix >= 0)) 787 while (ecb_expect_true (cxix >= 0))
771 { 788 {
772 PERL_CONTEXT *cx = &ccstk[cxix--]; 789 PERL_CONTEXT *cx = &ccstk[cxix--];
773 790
774 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT)) 791 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
775 { 792 {
776 CV *cv = cx->blk_sub.cv; 793 CV *cv = cx->blk_sub.cv;
777 794
778 if (expect_true (CvDEPTH (cv))) 795 if (ecb_expect_true (CvDEPTH (cv)))
779 { 796 {
780 EXTEND (SP, 3); 797 EXTEND (SP, 3);
781 PUSHs ((SV *)CvPADLIST (cv)); 798 PUSHs ((SV *)CvPADLIST (cv));
782 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 799 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
783 PUSHs ((SV *)cv); 800 PUSHs ((SV *)cv);
786 get_padlist (aTHX_ cv); 803 get_padlist (aTHX_ cv);
787 } 804 }
788 } 805 }
789 } 806 }
790 807
791 if (expect_true (top_si->si_type == PERLSI_MAIN)) 808 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
792 break; 809 break;
793 810
794 top_si = top_si->si_prev; 811 top_si = top_si->si_prev;
795 ccstk = top_si->si_cxstack; 812 ccstk = top_si->si_cxstack;
796 cxix = top_si->si_cxix; 813 cxix = top_si->si_cxix;
798 815
799 PUTBACK; 816 PUTBACK;
800 } 817 }
801 818
802 /* allocate some space on the context stack for our purposes */ 819 /* allocate some space on the context stack for our purposes */
803 /* we manually unroll here, as usually 2 slots is enough */ 820 if (ecb_expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
804 if (SLOT_COUNT >= 1) CXINC;
805 if (SLOT_COUNT >= 2) CXINC;
806 if (SLOT_COUNT >= 3) CXINC;
807 { 821 {
808 unsigned int i; 822 unsigned int i;
823
809 for (i = 3; i < SLOT_COUNT; ++i) 824 for (i = 0; i < SLOT_COUNT; ++i)
810 CXINC; 825 CXINC;
811 } 826
812 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 827 cxstack_ix -= SLOT_COUNT; /* undo allocation */
828 }
813 829
814 c->mainstack = PL_mainstack; 830 c->mainstack = PL_mainstack;
815 831
816 { 832 {
817 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 833 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
818 834
819 slot->defav = GvAV (PL_defgv); 835#if CORO_JIT
820 slot->defsv = DEFSV; 836 save_perl_slots (slot);
821 slot->errsv = ERRSV; 837#else
822 slot->irsgv = GvSV (irsgv);
823 slot->hinthv = GvHV (PL_hintgv);
824
825 #define VAR(name,type) slot->name = PL_ ## name; 838 #define VARx(name,expr,type) slot->name = expr;
826 # include "state.h" 839 # include "state.h"
827 #undef VAR 840 #undef VARx
841#endif
828 } 842 }
829} 843}
830 844
831/* 845/*
832 * allocate various perl stacks. This is almost an exact copy 846 * allocate various perl stacks. This is almost an exact copy
838# define coro_init_stacks(thx) init_stacks () 852# define coro_init_stacks(thx) init_stacks ()
839#else 853#else
840static void 854static void
841coro_init_stacks (pTHX) 855coro_init_stacks (pTHX)
842{ 856{
843 PL_curstackinfo = new_stackinfo(32, 8); 857 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
844 PL_curstackinfo->si_type = PERLSI_MAIN; 858 PL_curstackinfo->si_type = PERLSI_MAIN;
845 PL_curstack = PL_curstackinfo->si_stack; 859 PL_curstack = PL_curstackinfo->si_stack;
846 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 860 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
847 861
848 PL_stack_base = AvARRAY(PL_curstack); 862 PL_stack_base = AvARRAY(PL_curstack);
955#endif 969#endif
956 970
957/* 971/*
958 * This overrides the default magic get method of %SIG elements. 972 * This overrides the default magic get method of %SIG elements.
959 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 973 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
960 * and instead of trying to save and restore the hash elements, we just provide 974 * and instead of trying to save and restore the hash elements (extremely slow),
961 * readback here. 975 * we just provide our own readback here.
962 */ 976 */
963static int 977static int ecb_cold
964coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 978coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
965{ 979{
966 const char *s = MgPV_nolen_const (mg); 980 const char *s = MgPV_nolen_const (mg);
967 981
968 if (*s == '_') 982 if (*s == '_')
980 } 994 }
981 995
982 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 996 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
983} 997}
984 998
985static int 999static int ecb_cold
986coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1000coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
987{ 1001{
988 const char *s = MgPV_nolen_const (mg); 1002 const char *s = MgPV_nolen_const (mg);
989 1003
990 if (*s == '_') 1004 if (*s == '_')
1004 } 1018 }
1005 1019
1006 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1020 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
1007} 1021}
1008 1022
1009static int 1023static int ecb_cold
1010coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1024coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
1011{ 1025{
1012 const char *s = MgPV_nolen_const (mg); 1026 const char *s = MgPV_nolen_const (mg);
1013 1027
1014 if (*s == '_') 1028 if (*s == '_')
1049 return 1; 1063 return 1;
1050} 1064}
1051 1065
1052static UNOP init_perl_op; 1066static UNOP init_perl_op;
1053 1067
1054static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1068ecb_noinline static void /* noinline to keep it out of the transfer fast path */
1055init_perl (pTHX_ struct coro *coro) 1069init_perl (pTHX_ struct coro *coro)
1056{ 1070{
1057 /* 1071 /*
1058 * emulate part of the perl startup here. 1072 * emulate part of the perl startup here.
1059 */ 1073 */
1074 PL_parser = 0; 1088 PL_parser = 0;
1075#endif 1089#endif
1076 PL_hints = 0; 1090 PL_hints = 0;
1077 1091
1078 /* recreate the die/warn hooks */ 1092 /* recreate the die/warn hooks */
1079 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1093 PL_diehook = SvREFCNT_inc (rv_diehook);
1080 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1094 PL_warnhook = SvREFCNT_inc (rv_warnhook);
1081 1095
1082 GvSV (PL_defgv) = newSV (0); 1096 GvSV (PL_defgv) = newSV (0);
1083 GvAV (PL_defgv) = coro->args; coro->args = 0; 1097 GvAV (PL_defgv) = coro->args; coro->args = 0;
1084 GvSV (PL_errgv) = newSV (0); 1098 GvSV (PL_errgv) = newSV (0);
1085 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1099 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1106 /* this newly created coroutine might be run on an existing cctx which most 1120 /* this newly created coroutine might be run on an existing cctx which most
1107 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1121 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
1108 */ 1122 */
1109 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1123 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
1110 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1124 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1125 slf_frame.destroy = 0;
1111 1126
1112 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1127 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1113 init_perl_op.op_next = PL_op; 1128 init_perl_op.op_next = PL_op;
1114 init_perl_op.op_type = OP_ENTERSUB; 1129 init_perl_op.op_type = OP_ENTERSUB;
1115 init_perl_op.op_ppaddr = pp_slf; 1130 init_perl_op.op_ppaddr = pp_slf;
1120 /* copy throw, in case it was set before init_perl */ 1135 /* copy throw, in case it was set before init_perl */
1121 CORO_THROW = coro->except; 1136 CORO_THROW = coro->except;
1122 1137
1123 SWAP_SVS (coro); 1138 SWAP_SVS (coro);
1124 1139
1125 if (expect_false (enable_times)) 1140 if (ecb_expect_false (enable_times))
1126 { 1141 {
1127 coro_times_update (); 1142 coro_times_update ();
1128 coro_times_sub (coro); 1143 coro_times_sub (coro);
1129 } 1144 }
1130} 1145}
1154destroy_perl (pTHX_ struct coro *coro) 1169destroy_perl (pTHX_ struct coro *coro)
1155{ 1170{
1156 SV *svf [9]; 1171 SV *svf [9];
1157 1172
1158 { 1173 {
1174 SV *old_current = SvRV (coro_current);
1159 struct coro *current = SvSTATE_current; 1175 struct coro *current = SvSTATE (old_current);
1160 1176
1161 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack)); 1177 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1162 1178
1163 save_perl (aTHX_ current); 1179 save_perl (aTHX_ current);
1180
1181 /* this will cause transfer_check to croak on block*/
1182 SvRV_set (coro_current, (SV *)coro->hv);
1183
1164 load_perl (aTHX_ coro); 1184 load_perl (aTHX_ coro);
1165 1185
1166 coro_unwind_stacks (aTHX); 1186 coro_unwind_stacks (aTHX);
1167 coro_destruct_stacks (aTHX);
1168 1187
1169 /* restore swapped sv's */ 1188 /* restore swapped sv's */
1170 SWAP_SVS (coro); 1189 SWAP_SVS (coro);
1190
1191 coro_destruct_stacks (aTHX);
1171 1192
1172 // now save some sv's to be free'd later 1193 // now save some sv's to be free'd later
1173 svf [0] = GvSV (PL_defgv); 1194 svf [0] = GvSV (PL_defgv);
1174 svf [1] = (SV *)GvAV (PL_defgv); 1195 svf [1] = (SV *)GvAV (PL_defgv);
1175 svf [2] = GvSV (PL_errgv); 1196 svf [2] = GvSV (PL_errgv);
1179 svf [6] = (SV *)GvHV (PL_hintgv); 1200 svf [6] = (SV *)GvHV (PL_hintgv);
1180 svf [7] = PL_diehook; 1201 svf [7] = PL_diehook;
1181 svf [8] = PL_warnhook; 1202 svf [8] = PL_warnhook;
1182 assert (9 == sizeof (svf) / sizeof (*svf)); 1203 assert (9 == sizeof (svf) / sizeof (*svf));
1183 1204
1205 SvRV_set (coro_current, old_current);
1206
1184 load_perl (aTHX_ current); 1207 load_perl (aTHX_ current);
1185 } 1208 }
1186 1209
1187 { 1210 {
1188 unsigned int i; 1211 unsigned int i;
1195 SvREFCNT_dec (coro->invoke_cb); 1218 SvREFCNT_dec (coro->invoke_cb);
1196 SvREFCNT_dec (coro->invoke_av); 1219 SvREFCNT_dec (coro->invoke_av);
1197 } 1220 }
1198} 1221}
1199 1222
1200INLINE void 1223ECB_INLINE void
1201free_coro_mortal (pTHX) 1224free_coro_mortal (pTHX)
1202{ 1225{
1203 if (expect_true (coro_mortal)) 1226 if (ecb_expect_true (coro_mortal))
1204 { 1227 {
1205 SvREFCNT_dec (coro_mortal); 1228 SvREFCNT_dec ((SV *)coro_mortal);
1206 coro_mortal = 0; 1229 coro_mortal = 0;
1207 } 1230 }
1208} 1231}
1209 1232
1210static int 1233static int
1343 1366
1344 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1367 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1345} 1368}
1346 1369
1347/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1370/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1348static void NOINLINE 1371static void ecb_noinline
1349cctx_prepare (pTHX) 1372cctx_prepare (pTHX)
1350{ 1373{
1351 PL_top_env = &PL_start_env; 1374 PL_top_env = &PL_start_env;
1352 1375
1353 if (cctx_current->flags & CC_TRACE) 1376 if (cctx_current->flags & CC_TRACE)
1364 slf_frame.prepare = slf_prepare_set_stacklevel; 1387 slf_frame.prepare = slf_prepare_set_stacklevel;
1365 slf_frame.check = slf_check_set_stacklevel; 1388 slf_frame.check = slf_check_set_stacklevel;
1366} 1389}
1367 1390
1368/* the tail of transfer: execute stuff we can only do after a transfer */ 1391/* the tail of transfer: execute stuff we can only do after a transfer */
1369INLINE void 1392ECB_INLINE void
1370transfer_tail (pTHX) 1393transfer_tail (pTHX)
1371{ 1394{
1372 free_coro_mortal (aTHX); 1395 free_coro_mortal (aTHX);
1373} 1396}
1374 1397
1526#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1549#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1527 1550
1528static coro_cctx * 1551static coro_cctx *
1529cctx_get (pTHX) 1552cctx_get (pTHX)
1530{ 1553{
1531 while (expect_true (cctx_first)) 1554 while (ecb_expect_true (cctx_first))
1532 { 1555 {
1533 coro_cctx *cctx = cctx_first; 1556 coro_cctx *cctx = cctx_first;
1534 cctx_first = cctx->next; 1557 cctx_first = cctx->next;
1535 --cctx_idle; 1558 --cctx_idle;
1536 1559
1537 if (expect_true (!CCTX_EXPIRED (cctx))) 1560 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1538 return cctx; 1561 return cctx;
1539 1562
1540 cctx_destroy (cctx); 1563 cctx_destroy (cctx);
1541 } 1564 }
1542 1565
1547cctx_put (coro_cctx *cctx) 1570cctx_put (coro_cctx *cctx)
1548{ 1571{
1549 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1572 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1550 1573
1551 /* free another cctx if overlimit */ 1574 /* free another cctx if overlimit */
1552 if (expect_false (cctx_idle >= cctx_max_idle)) 1575 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1553 { 1576 {
1554 coro_cctx *first = cctx_first; 1577 coro_cctx *first = cctx_first;
1555 cctx_first = first->next; 1578 cctx_first = first->next;
1556 --cctx_idle; 1579 --cctx_idle;
1557 1580
1568static void 1591static void
1569transfer_check (pTHX_ struct coro *prev, struct coro *next) 1592transfer_check (pTHX_ struct coro *prev, struct coro *next)
1570{ 1593{
1571 /* TODO: throwing up here is considered harmful */ 1594 /* TODO: throwing up here is considered harmful */
1572 1595
1573 if (expect_true (prev != next)) 1596 if (ecb_expect_true (prev != next))
1574 { 1597 {
1575 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1598 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1576 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,"); 1599 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1577 1600
1578 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED))) 1601 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1579 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,"); 1602 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1580 1603
1581#if !PERL_VERSION_ATLEAST (5,10,0) 1604#if !PERL_VERSION_ATLEAST (5,10,0)
1582 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1605 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1583 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1606 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1584#endif 1607#endif
1585 } 1608 }
1586} 1609}
1587 1610
1588/* always use the TRANSFER macro */ 1611/* always use the TRANSFER macro */
1589static void NOINLINE /* noinline so we have a fixed stackframe */ 1612static void ecb_noinline /* noinline so we have a fixed stackframe */
1590transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1613transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1591{ 1614{
1592 dSTACKLEVEL; 1615 dSTACKLEVEL;
1593 1616
1594 /* sometimes transfer is only called to set idle_sp */ 1617 /* sometimes transfer is only called to set idle_sp */
1595 if (expect_false (!prev)) 1618 if (ecb_expect_false (!prev))
1596 { 1619 {
1597 cctx_current->idle_sp = STACKLEVEL; 1620 cctx_current->idle_sp = STACKLEVEL;
1598 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1621 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1599 } 1622 }
1600 else if (expect_true (prev != next)) 1623 else if (ecb_expect_true (prev != next))
1601 { 1624 {
1602 coro_cctx *cctx_prev; 1625 coro_cctx *cctx_prev;
1603 1626
1604 if (expect_false (prev->flags & CF_NEW)) 1627 if (ecb_expect_false (prev->flags & CF_NEW))
1605 { 1628 {
1606 /* create a new empty/source context */ 1629 /* create a new empty/source context */
1607 prev->flags &= ~CF_NEW; 1630 prev->flags &= ~CF_NEW;
1608 prev->flags |= CF_RUNNING; 1631 prev->flags |= CF_RUNNING;
1609 } 1632 }
1612 next->flags |= CF_RUNNING; 1635 next->flags |= CF_RUNNING;
1613 1636
1614 /* first get rid of the old state */ 1637 /* first get rid of the old state */
1615 save_perl (aTHX_ prev); 1638 save_perl (aTHX_ prev);
1616 1639
1617 if (expect_false (next->flags & CF_NEW)) 1640 if (ecb_expect_false (next->flags & CF_NEW))
1618 { 1641 {
1619 /* need to start coroutine */ 1642 /* need to start coroutine */
1620 next->flags &= ~CF_NEW; 1643 next->flags &= ~CF_NEW;
1621 /* setup coroutine call */ 1644 /* setup coroutine call */
1622 init_perl (aTHX_ next); 1645 init_perl (aTHX_ next);
1623 } 1646 }
1624 else 1647 else
1625 load_perl (aTHX_ next); 1648 load_perl (aTHX_ next);
1626 1649
1627 /* possibly untie and reuse the cctx */ 1650 /* possibly untie and reuse the cctx */
1628 if (expect_true ( 1651 if (ecb_expect_true (
1629 cctx_current->idle_sp == STACKLEVEL 1652 cctx_current->idle_sp == STACKLEVEL
1630 && !(cctx_current->flags & CC_TRACE) 1653 && !(cctx_current->flags & CC_TRACE)
1631 && !force_cctx 1654 && !force_cctx
1632 )) 1655 ))
1633 { 1656 {
1634 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1657 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1635 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); 1658 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1636 1659
1637 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ 1660 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1638 /* without this the next cctx_get might destroy the running cctx while still in use */ 1661 /* without this the next cctx_get might destroy the running cctx while still in use */
1639 if (expect_false (CCTX_EXPIRED (cctx_current))) 1662 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1640 if (expect_true (!next->cctx)) 1663 if (ecb_expect_true (!next->cctx))
1641 next->cctx = cctx_get (aTHX); 1664 next->cctx = cctx_get (aTHX);
1642 1665
1643 cctx_put (cctx_current); 1666 cctx_put (cctx_current);
1644 } 1667 }
1645 else 1668 else
1646 prev->cctx = cctx_current; 1669 prev->cctx = cctx_current;
1647 1670
1648 ++next->usecount; 1671 ++next->usecount;
1649 1672
1650 cctx_prev = cctx_current; 1673 cctx_prev = cctx_current;
1651 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); 1674 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1652 1675
1653 next->cctx = 0; 1676 next->cctx = 0;
1654 1677
1655 if (expect_false (cctx_prev != cctx_current)) 1678 if (ecb_expect_false (cctx_prev != cctx_current))
1656 { 1679 {
1657 cctx_prev->top_env = PL_top_env; 1680 cctx_prev->top_env = PL_top_env;
1658 PL_top_env = cctx_current->top_env; 1681 PL_top_env = cctx_current->top_env;
1659 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); 1682 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1660 } 1683 }
1666#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1689#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1667#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1690#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1668 1691
1669/** high level stuff ********************************************************/ 1692/** high level stuff ********************************************************/
1670 1693
1694/* this function is actually Coro, not Coro::State, but we call it from here */
1695/* because it is convenient - but it hasn't been declared yet for that reason */
1671static int 1696static void
1697coro_call_on_destroy (pTHX_ struct coro *coro);
1698
1699static void
1672coro_state_destroy (pTHX_ struct coro *coro) 1700coro_state_destroy (pTHX_ struct coro *coro)
1673{ 1701{
1674 if (coro->flags & CF_DESTROYED) 1702 if (coro->flags & CF_ZOMBIE)
1675 return 0; 1703 return;
1676 1704
1677 if (coro->on_destroy && !PL_dirty)
1678 coro->on_destroy (aTHX_ coro); 1705 slf_destroy (aTHX_ coro);
1679 1706
1680 /*
1681 * The on_destroy above most likely is from an SLF call.
1682 * Since by definition the SLF call will not finish when we destroy
1683 * the coro, we will have to force-finish it here, otherwise
1684 * cleanup functions cannot call SLF functions.
1685 */
1686 coro->slf_frame.prepare = 0;
1687
1688 coro->flags |= CF_DESTROYED; 1707 coro->flags |= CF_ZOMBIE;
1689 1708
1690 if (coro->flags & CF_READY) 1709 if (coro->flags & CF_READY)
1691 { 1710 {
1692 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1711 /* reduce nready, as destroying a ready coro effectively unreadies it */
1693 /* alternative: look through all ready queues and remove the coro */ 1712 /* alternative: look through all ready queues and remove the coro */
1694 --coro_nready; 1713 --coro_nready;
1695 } 1714 }
1696 else 1715 else
1697 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1716 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1717
1718 if (coro->next) coro->next->prev = coro->prev;
1719 if (coro->prev) coro->prev->next = coro->next;
1720 if (coro == coro_first) coro_first = coro->next;
1698 1721
1699 if (coro->mainstack 1722 if (coro->mainstack
1700 && coro->mainstack != main_mainstack 1723 && coro->mainstack != main_mainstack
1701 && coro->slot 1724 && coro->slot
1702 && !PL_dirty) 1725 && !PL_dirty)
1703 destroy_perl (aTHX_ coro); 1726 destroy_perl (aTHX_ coro);
1704 1727
1705 if (coro->next) coro->next->prev = coro->prev;
1706 if (coro->prev) coro->prev->next = coro->next;
1707 if (coro == coro_first) coro_first = coro->next;
1708
1709 cctx_destroy (coro->cctx); 1728 cctx_destroy (coro->cctx);
1710 SvREFCNT_dec (coro->startcv); 1729 SvREFCNT_dec (coro->startcv);
1711 SvREFCNT_dec (coro->args); 1730 SvREFCNT_dec (coro->args);
1712 SvREFCNT_dec (coro->swap_sv); 1731 SvREFCNT_dec (coro->swap_sv);
1713 SvREFCNT_dec (CORO_THROW); 1732 SvREFCNT_dec (CORO_THROW);
1714 1733
1715 return 1; 1734 coro_call_on_destroy (aTHX_ coro);
1735
1736 /* more destruction mayhem in coro_state_free */
1716} 1737}
1717 1738
1718static int 1739static int
1719coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1740coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1720{ 1741{
1721 struct coro *coro = (struct coro *)mg->mg_ptr; 1742 struct coro *coro = (struct coro *)mg->mg_ptr;
1722 mg->mg_ptr = 0; 1743 mg->mg_ptr = 0;
1723 1744
1724 coro->hv = 0;
1725
1726 if (--coro->refcnt < 0)
1727 {
1728 coro_state_destroy (aTHX_ coro); 1745 coro_state_destroy (aTHX_ coro);
1746 SvREFCNT_dec (coro->on_destroy);
1747 SvREFCNT_dec (coro->status);
1748
1729 Safefree (coro); 1749 Safefree (coro);
1730 }
1731 1750
1732 return 0; 1751 return 0;
1733} 1752}
1734 1753
1735static int 1754static int ecb_cold
1736coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1755coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1737{ 1756{
1738 struct coro *coro = (struct coro *)mg->mg_ptr; 1757 /* called when perl clones the current process the slow way (windows process emulation) */
1739 1758 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1740 ++coro->refcnt; 1759 mg->mg_ptr = 0;
1760 mg->mg_virtual = 0;
1741 1761
1742 return 0; 1762 return 0;
1743} 1763}
1744 1764
1745static MGVTBL coro_state_vtbl = { 1765static MGVTBL coro_state_vtbl = {
1770 TRANSFER (ta, 1); 1790 TRANSFER (ta, 1);
1771} 1791}
1772 1792
1773/** Coro ********************************************************************/ 1793/** Coro ********************************************************************/
1774 1794
1775INLINE void 1795ECB_INLINE void
1776coro_enq (pTHX_ struct coro *coro) 1796coro_enq (pTHX_ struct coro *coro)
1777{ 1797{
1778 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN]; 1798 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1779 1799
1780 SvREFCNT_inc_NN (coro->hv); 1800 SvREFCNT_inc_NN (coro->hv);
1782 coro->next_ready = 0; 1802 coro->next_ready = 0;
1783 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro; 1803 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1784 ready [1] = coro; 1804 ready [1] = coro;
1785} 1805}
1786 1806
1787INLINE struct coro * 1807ECB_INLINE struct coro *
1788coro_deq (pTHX) 1808coro_deq (pTHX)
1789{ 1809{
1790 int prio; 1810 int prio;
1791 1811
1792 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; ) 1812 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1845{ 1865{
1846 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1866 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1847} 1867}
1848 1868
1849/* expects to own a reference to next->hv */ 1869/* expects to own a reference to next->hv */
1850INLINE void 1870ECB_INLINE void
1851prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) 1871prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1852{ 1872{
1853 SV *prev_sv = SvRV (coro_current); 1873 SV *prev_sv = SvRV (coro_current);
1854 1874
1855 ta->prev = SvSTATE_hv (prev_sv); 1875 ta->prev = SvSTATE_hv (prev_sv);
1868{ 1888{
1869 for (;;) 1889 for (;;)
1870 { 1890 {
1871 struct coro *next = coro_deq (aTHX); 1891 struct coro *next = coro_deq (aTHX);
1872 1892
1873 if (expect_true (next)) 1893 if (ecb_expect_true (next))
1874 { 1894 {
1875 /* cannot transfer to destroyed coros, skip and look for next */ 1895 /* cannot transfer to destroyed coros, skip and look for next */
1876 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED))) 1896 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1877 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */ 1897 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1878 else 1898 else
1879 { 1899 {
1880 next->flags &= ~CF_READY; 1900 next->flags &= ~CF_READY;
1881 --coro_nready; 1901 --coro_nready;
1914 } 1934 }
1915 } 1935 }
1916 } 1936 }
1917} 1937}
1918 1938
1919INLINE void 1939ECB_INLINE void
1920prepare_cede (pTHX_ struct coro_transfer_args *ta) 1940prepare_cede (pTHX_ struct coro_transfer_args *ta)
1921{ 1941{
1922 api_ready (aTHX_ coro_current); 1942 api_ready (aTHX_ coro_current);
1923 prepare_schedule (aTHX_ ta); 1943 prepare_schedule (aTHX_ ta);
1924} 1944}
1925 1945
1926INLINE void 1946ECB_INLINE void
1927prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1947prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1928{ 1948{
1929 SV *prev = SvRV (coro_current); 1949 SV *prev = SvRV (coro_current);
1930 1950
1931 if (coro_nready) 1951 if (coro_nready)
1961{ 1981{
1962 struct coro_transfer_args ta; 1982 struct coro_transfer_args ta;
1963 1983
1964 prepare_cede (aTHX_ &ta); 1984 prepare_cede (aTHX_ &ta);
1965 1985
1966 if (expect_true (ta.prev != ta.next)) 1986 if (ecb_expect_true (ta.prev != ta.next))
1967 { 1987 {
1968 TRANSFER (ta, 1); 1988 TRANSFER (ta, 1);
1969 return 1; 1989 return 1;
1970 } 1990 }
1971 else 1991 else
2014 coro->slot->runops = RUNOPS_DEFAULT; 2034 coro->slot->runops = RUNOPS_DEFAULT;
2015 } 2035 }
2016} 2036}
2017 2037
2018static void 2038static void
2039coro_push_av (pTHX_ AV *av, I32 gimme_v)
2040{
2041 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2042 {
2043 dSP;
2044
2045 if (gimme_v == G_SCALAR)
2046 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2047 else
2048 {
2049 int i;
2050 EXTEND (SP, AvFILLp (av) + 1);
2051
2052 for (i = 0; i <= AvFILLp (av); ++i)
2053 PUSHs (AvARRAY (av)[i]);
2054 }
2055
2056 PUTBACK;
2057 }
2058}
2059
2060static void
2061coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2062{
2063 if (!coro->on_destroy)
2064 coro->on_destroy = newAV ();
2065
2066 av_push (coro->on_destroy, cb);
2067}
2068
2069static void
2070slf_destroy_join (pTHX_ struct CoroSLF *frame)
2071{
2072 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2073}
2074
2075static int
2076slf_check_join (pTHX_ struct CoroSLF *frame)
2077{
2078 struct coro *coro = (struct coro *)frame->data;
2079
2080 if (!coro->status)
2081 return 1;
2082
2083 frame->destroy = 0;
2084
2085 coro_push_av (aTHX_ coro->status, GIMME_V);
2086
2087 SvREFCNT_dec ((SV *)coro->hv);
2088
2089 return 0;
2090}
2091
2092static void
2093slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2094{
2095 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2096
2097 if (items > 1)
2098 croak ("join called with too many arguments");
2099
2100 if (coro->status)
2101 frame->prepare = prepare_nop;
2102 else
2103 {
2104 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2105 frame->prepare = prepare_schedule;
2106 }
2107
2108 frame->check = slf_check_join;
2109 frame->destroy = slf_destroy_join;
2110 frame->data = (void *)coro;
2111 SvREFCNT_inc (coro->hv);
2112}
2113
2114static void
2019coro_call_on_destroy (pTHX_ struct coro *coro) 2115coro_call_on_destroy (pTHX_ struct coro *coro)
2020{ 2116{
2021 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); 2117 AV *od = coro->on_destroy;
2022 2118
2023 if (on_destroyp) 2119 if (!od)
2024 { 2120 return;
2025 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
2026 AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp)));
2027 AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0;
2028 2121
2029 while (AvFILLp (on_destroy) >= 0) 2122 while (AvFILLp (od) >= 0)
2123 {
2124 SV *cb = sv_2mortal (av_pop (od));
2125
2126 /* coro hv's (and only hv's at the moment) are supported as well */
2127 if (SvSTATEhv_p (aTHX_ cb))
2128 api_ready (aTHX_ cb);
2129 else
2030 { 2130 {
2031 dSP; /* don't disturb outer sp */ 2131 dSP; /* don't disturb outer sp */
2032 SV *cb = av_pop (on_destroy);
2033
2034 PUSHMARK (SP); 2132 PUSHMARK (SP);
2035 2133
2036 if (statusp) 2134 if (coro->status)
2037 { 2135 {
2038 int i; 2136 PUTBACK;
2039 EXTEND (SP, AvFILLp (status) + 1); 2137 coro_push_av (aTHX_ coro->status, G_ARRAY);
2040 2138 SPAGAIN;
2041 for (i = 0; i <= AvFILLp (status); ++i)
2042 PUSHs (AvARRAY (status)[i]);
2043 } 2139 }
2044 2140
2045 PUTBACK; 2141 PUTBACK;
2046 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); 2142 call_sv (cb, G_VOID | G_DISCARD);
2047 } 2143 }
2048 } 2144 }
2049} 2145}
2050 2146
2051static void 2147static void
2052coro_set_status (HV *coro_hv, SV **arg, int items) 2148coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2053{ 2149{
2054 AV *av = newAV (); 2150 AV *av;
2151
2152 if (coro->status)
2153 {
2154 av = coro->status;
2155 av_clear (av);
2156 }
2157 else
2158 av = coro->status = newAV ();
2055 2159
2056 /* items are actually not so common, so optimise for this case */ 2160 /* items are actually not so common, so optimise for this case */
2057 if (items) 2161 if (items)
2058 { 2162 {
2059 int i; 2163 int i;
2061 av_extend (av, items - 1); 2165 av_extend (av, items - 1);
2062 2166
2063 for (i = 0; i < items; ++i) 2167 for (i = 0; i < items; ++i)
2064 av_push (av, SvREFCNT_inc_NN (arg [i])); 2168 av_push (av, SvREFCNT_inc_NN (arg [i]));
2065 } 2169 }
2066
2067 hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2068} 2170}
2069 2171
2070static void 2172static void
2071slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv) 2173slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2072{ 2174{
2084static void 2186static void
2085slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2187slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2086{ 2188{
2087 HV *coro_hv = (HV *)SvRV (coro_current); 2189 HV *coro_hv = (HV *)SvRV (coro_current);
2088 2190
2089 coro_set_status (coro_hv, arg, items); 2191 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2090 slf_init_terminate_cancel_common (frame, coro_hv); 2192 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2091} 2193}
2092 2194
2093static void 2195static void
2094slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2196slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2095{ 2197{
2100 croak ("Coro::cancel called without coro object,"); 2202 croak ("Coro::cancel called without coro object,");
2101 2203
2102 coro = SvSTATE (arg [0]); 2204 coro = SvSTATE (arg [0]);
2103 coro_hv = coro->hv; 2205 coro_hv = coro->hv;
2104 2206
2105 coro_set_status (coro_hv, arg + 1, items - 1); 2207 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2106 2208
2107 if (expect_false (coro->flags & CF_NOCANCEL)) 2209 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2108 { 2210 {
2109 /* coro currently busy cancelling something, so just notify it */ 2211 /* coro currently busy cancelling something, so just notify it */
2110 coro->slf_frame.data = (void *)coro; 2212 coro->slf_frame.data = (void *)coro;
2111 2213
2112 frame->prepare = prepare_nop; 2214 frame->prepare = prepare_nop;
2113 frame->check = slf_check_nop; 2215 frame->check = slf_check_nop;
2114 } 2216 }
2115 else if (coro_hv == (HV *)SvRV (coro_current)) 2217 else if (coro_hv == (HV *)SvRV (coro_current))
2116 { 2218 {
2117 /* cancelling the current coro is allowed, and equals terminate */ 2219 /* cancelling the current coro is allowed, and equals terminate */
2118 slf_init_terminate_cancel_common (frame, coro_hv); 2220 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2119 } 2221 }
2120 else 2222 else
2121 { 2223 {
2122 struct coro *self = SvSTATE_current; 2224 struct coro *self = SvSTATE_current;
2123 2225
2127 * this is ugly, and hopefully fully worth the extra speed. 2229 * this is ugly, and hopefully fully worth the extra speed.
2128 * besides, I can't get the slow-but-safe version working... 2230 * besides, I can't get the slow-but-safe version working...
2129 */ 2231 */
2130 slf_frame.data = 0; 2232 slf_frame.data = 0;
2131 self->flags |= CF_NOCANCEL; 2233 self->flags |= CF_NOCANCEL;
2132
2133 coro_state_destroy (aTHX_ coro); 2234 coro_state_destroy (aTHX_ coro);
2134 coro_call_on_destroy (aTHX_ coro);
2135
2136 self->flags &= ~CF_NOCANCEL; 2235 self->flags &= ~CF_NOCANCEL;
2137 2236
2138 if (slf_frame.data) 2237 if (slf_frame.data)
2139 { 2238 {
2140 /* while we were busy we have been cancelled, so terminate */ 2239 /* while we were busy we have been cancelled, so terminate */
2141 slf_init_terminate_cancel_common (frame, self->hv); 2240 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2142 } 2241 }
2143 else 2242 else
2144 { 2243 {
2145 frame->prepare = prepare_nop; 2244 frame->prepare = prepare_nop;
2146 frame->check = slf_check_nop; 2245 frame->check = slf_check_nop;
2147 } 2246 }
2148 } 2247 }
2149} 2248}
2150 2249
2250static int
2251slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2252{
2253 frame->prepare = 0;
2254 coro_unwind_stacks (aTHX);
2255
2256 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2257
2258 return 1;
2259}
2260
2261static int
2262safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2263{
2264 if (coro->cctx)
2265 croak ("coro inside C callback, unable to cancel at this time, caught");
2266
2267 if (coro->flags & CF_NEW)
2268 {
2269 coro_set_status (aTHX_ coro, arg, items);
2270 coro_state_destroy (aTHX_ coro);
2271 }
2272 else
2273 {
2274 if (!coro->slf_frame.prepare)
2275 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2276
2277 slf_destroy (aTHX_ coro);
2278
2279 coro_set_status (aTHX_ coro, arg, items);
2280 coro->slf_frame.prepare = prepare_nop;
2281 coro->slf_frame.check = slf_check_safe_cancel;
2282
2283 api_ready (aTHX_ (SV *)coro->hv);
2284 }
2285
2286 return 1;
2287}
2288
2151/*****************************************************************************/ 2289/*****************************************************************************/
2152/* async pool handler */ 2290/* async pool handler */
2153 2291
2154static int 2292static int
2155slf_check_pool_handler (pTHX_ struct CoroSLF *frame) 2293slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2184slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2322slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2185{ 2323{
2186 HV *hv = (HV *)SvRV (coro_current); 2324 HV *hv = (HV *)SvRV (coro_current);
2187 struct coro *coro = SvSTATE_hv ((SV *)hv); 2325 struct coro *coro = SvSTATE_hv ((SV *)hv);
2188 2326
2189 if (expect_true (coro->saved_deffh)) 2327 if (ecb_expect_true (coro->saved_deffh))
2190 { 2328 {
2191 /* subsequent iteration */ 2329 /* subsequent iteration */
2192 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2330 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2193 coro->saved_deffh = 0; 2331 coro->saved_deffh = 0;
2194 2332
2195 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 2333 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2196 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2334 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2197 { 2335 {
2198 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); 2336 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2199 coro->invoke_av = newAV (); 2337 return;
2200
2201 frame->prepare = prepare_nop;
2202 } 2338 }
2203 else 2339 else
2204 { 2340 {
2205 av_clear (GvAV (PL_defgv)); 2341 av_clear (GvAV (PL_defgv));
2206 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); 2342 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2429static void 2565static void
2430slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2566slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2431{ 2567{
2432 frame->prepare = prepare_cede_notself; 2568 frame->prepare = prepare_cede_notself;
2433 frame->check = slf_check_nop; 2569 frame->check = slf_check_nop;
2570}
2571
2572/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2573static void
2574slf_destroy (pTHX_ struct coro *coro)
2575{
2576 /* this callback is reserved for slf functions needing to do cleanup */
2577 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2578 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2579
2580 /*
2581 * The on_destroy above most likely is from an SLF call.
2582 * Since by definition the SLF call will not finish when we destroy
2583 * the coro, we will have to force-finish it here, otherwise
2584 * cleanup functions cannot call SLF functions.
2585 */
2586 coro->slf_frame.prepare = 0;
2434} 2587}
2435 2588
2436/* 2589/*
2437 * these not obviously related functions are all rolled into one 2590 * these not obviously related functions are all rolled into one
2438 * function to increase chances that they all will call transfer with the same 2591 * function to increase chances that they all will call transfer with the same
2445 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2598 I32 checkmark; /* mark SP to see how many elements check has pushed */
2446 2599
2447 /* set up the slf frame, unless it has already been set-up */ 2600 /* set up the slf frame, unless it has already been set-up */
2448 /* the latter happens when a new coro has been started */ 2601 /* the latter happens when a new coro has been started */
2449 /* or when a new cctx was attached to an existing coroutine */ 2602 /* or when a new cctx was attached to an existing coroutine */
2450 if (expect_true (!slf_frame.prepare)) 2603 if (ecb_expect_true (!slf_frame.prepare))
2451 { 2604 {
2452 /* first iteration */ 2605 /* first iteration */
2453 dSP; 2606 dSP;
2454 SV **arg = PL_stack_base + TOPMARK + 1; 2607 SV **arg = PL_stack_base + TOPMARK + 1;
2455 int items = SP - arg; /* args without function object */ 2608 int items = SP - arg; /* args without function object */
2496 while (slf_frame.check (aTHX_ &slf_frame)); 2649 while (slf_frame.check (aTHX_ &slf_frame));
2497 2650
2498 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2651 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2499 2652
2500 /* exception handling */ 2653 /* exception handling */
2501 if (expect_false (CORO_THROW)) 2654 if (ecb_expect_false (CORO_THROW))
2502 { 2655 {
2503 SV *exception = sv_2mortal (CORO_THROW); 2656 SV *exception = sv_2mortal (CORO_THROW);
2504 2657
2505 CORO_THROW = 0; 2658 CORO_THROW = 0;
2506 sv_setsv (ERRSV, exception); 2659 sv_setsv (ERRSV, exception);
2507 croak (0); 2660 croak (0);
2508 } 2661 }
2509 2662
2510 /* return value handling - mostly like entersub */ 2663 /* return value handling - mostly like entersub */
2511 /* make sure we put something on the stack in scalar context */ 2664 /* make sure we put something on the stack in scalar context */
2512 if (GIMME_V == G_SCALAR) 2665 if (GIMME_V == G_SCALAR
2666 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2513 { 2667 {
2514 dSP; 2668 dSP;
2515 SV **bot = PL_stack_base + checkmark; 2669 SV **bot = PL_stack_base + checkmark;
2516 2670
2517 if (sp == bot) /* too few, push undef */ 2671 if (sp == bot) /* too few, push undef */
2518 bot [1] = &PL_sv_undef; 2672 bot [1] = &PL_sv_undef;
2519 else if (sp != bot + 1) /* too many, take last one */ 2673 else /* too many, take last one */
2520 bot [1] = *sp; 2674 bot [1] = *sp;
2521 2675
2522 SP = bot + 1; 2676 SP = bot + 1;
2523 2677
2524 PUTBACK; 2678 PUTBACK;
2631{ 2785{
2632 PerlIOBuf base; 2786 PerlIOBuf base;
2633 NV next, every; 2787 NV next, every;
2634} PerlIOCede; 2788} PerlIOCede;
2635 2789
2636static IV 2790static IV ecb_cold
2637PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2791PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2638{ 2792{
2639 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2793 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2640 2794
2641 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2795 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2642 self->next = nvtime () + self->every; 2796 self->next = nvtime () + self->every;
2643 2797
2644 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2798 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2645} 2799}
2646 2800
2647static SV * 2801static SV * ecb_cold
2648PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2802PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2649{ 2803{
2650 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2804 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2651 2805
2652 return newSVnv (self->every); 2806 return newSVnv (self->every);
2764 SvREFCNT_dec (cb); 2918 SvREFCNT_dec (cb);
2765 } 2919 }
2766} 2920}
2767 2921
2768static void 2922static void
2769coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2923coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2770{ 2924{
2771 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2925 /* call $sem->adjust (0) to possibly wake up some other waiters */
2772 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2926 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2773} 2927}
2774 2928
2775static int 2929static int
2776slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 2930slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2777{ 2931{
2778 AV *av = (AV *)frame->data; 2932 AV *av = (AV *)frame->data;
2779 SV *count_sv = AvARRAY (av)[0]; 2933 SV *count_sv = AvARRAY (av)[0];
2934 SV *coro_hv = SvRV (coro_current);
2780 2935
2781 /* if we are about to throw, don't actually acquire the lock, just throw */ 2936 /* if we are about to throw, don't actually acquire the lock, just throw */
2782 if (CORO_THROW) 2937 if (CORO_THROW)
2783 return 0; 2938 return 0;
2784 else if (SvIVX (count_sv) > 0) 2939 else if (SvIVX (count_sv) > 0)
2785 { 2940 {
2786 SvSTATE_current->on_destroy = 0; 2941 frame->destroy = 0;
2787 2942
2788 if (acquire) 2943 if (acquire)
2789 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2944 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2790 else 2945 else
2791 coro_semaphore_adjust (aTHX_ av, 0); 2946 coro_semaphore_adjust (aTHX_ av, 0);
2796 { 2951 {
2797 int i; 2952 int i;
2798 /* if we were woken up but can't down, we look through the whole */ 2953 /* if we were woken up but can't down, we look through the whole */
2799 /* waiters list and only add us if we aren't in there already */ 2954 /* waiters list and only add us if we aren't in there already */
2800 /* this avoids some degenerate memory usage cases */ 2955 /* this avoids some degenerate memory usage cases */
2801 2956 for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug
2802 for (i = 1; i <= AvFILLp (av); ++i)
2803 if (AvARRAY (av)[i] == SvRV (coro_current)) 2957 if (AvARRAY (av)[i] == coro_hv)
2804 return 1; 2958 return 1;
2805 2959
2806 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2960 av_push (av, SvREFCNT_inc (coro_hv));
2807 return 1; 2961 return 1;
2808 } 2962 }
2809} 2963}
2810 2964
2811static int 2965static int
2834 { 2988 {
2835 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2989 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2836 2990
2837 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2991 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2838 frame->prepare = prepare_schedule; 2992 frame->prepare = prepare_schedule;
2839
2840 /* to avoid race conditions when a woken-up coro gets terminated */ 2993 /* to avoid race conditions when a woken-up coro gets terminated */
2841 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2994 /* we arrange for a temporary on_destroy that calls adjust (0) */
2842 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2995 frame->destroy = coro_semaphore_destroy;
2843 } 2996 }
2844} 2997}
2845 2998
2846static void 2999static void
2847slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3000slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3065 dSP; 3218 dSP;
3066 3219
3067 static SV *prio_cv; 3220 static SV *prio_cv;
3068 static SV *prio_sv; 3221 static SV *prio_sv;
3069 3222
3070 if (expect_false (!prio_cv)) 3223 if (ecb_expect_false (!prio_cv))
3071 { 3224 {
3072 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3225 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3073 prio_sv = newSViv (0); 3226 prio_sv = newSViv (0);
3074 } 3227 }
3075 3228
3181 } 3334 }
3182 3335
3183 return coro_sv; 3336 return coro_sv;
3184} 3337}
3185 3338
3339#ifndef __cplusplus
3340ecb_cold XS(boot_Coro__State);
3341#endif
3342
3343#if CORO_JIT
3344
3345static void ecb_noinline ecb_cold
3346pushav_3uv (pTHX_ UV a, UV b, UV c)
3347{
3348 dSP;
3349 AV *av = newAV ();
3350
3351 av_store (av, 2, newSVuv (c));
3352 av_store (av, 1, newSVuv (b));
3353 av_store (av, 0, newSVuv (a));
3354
3355 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3356
3357 PUTBACK;
3358}
3359
3360static void ecb_noinline ecb_cold
3361jit_init (pTHX)
3362{
3363 dSP;
3364 SV *load, *save;
3365 char *map_base;
3366 char *load_ptr, *save_ptr;
3367 STRLEN load_len, save_len;
3368 int count;
3369
3370 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3371
3372 PUSHMARK (SP);
3373#define VARx(name,expr,type) pushav_3uv (aTHX_ (UV)&(expr), offsetof (perl_slots, name), sizeof (type));
3374# include "state.h"
3375#undef VARx
3376 count = call_pv ("Coro::State::_jit", G_ARRAY);
3377 SPAGAIN;
3378
3379 save = POPs; save_ptr = SvPVbyte (save, save_len);
3380 load = POPs; load_ptr = SvPVbyte (load, load_len);
3381
3382 map_base = mmap (0, load_len + save_len + 16, PROT_EXEC | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3383
3384 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3385
3386 load_perl_slots = (load_save_perl_slots_type)map_base;
3387 memcpy (map_base, load_ptr, load_len);
3388
3389 map_base += (load_len + 15) & ~15;
3390
3391 save_perl_slots = (load_save_perl_slots_type)map_base;
3392 memcpy (map_base, save_ptr, save_len);
3393
3394 PUTBACK;
3395 eval_pv ("undef &Coro::State::_jit", 1);
3396}
3397
3398#endif
3399
3186MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3400MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
3187 3401
3188PROTOTYPES: DISABLE 3402PROTOTYPES: DISABLE
3189 3403
3190BOOT: 3404BOOT:
3194 coro_thx = PERL_GET_CONTEXT; 3408 coro_thx = PERL_GET_CONTEXT;
3195# endif 3409# endif
3196#endif 3410#endif
3197 BOOT_PAGESIZE; 3411 BOOT_PAGESIZE;
3198 3412
3413 /* perl defines these to check for existance first, but why it doesn't */
3414 /* just create them one at init time is not clear to me, except for */
3415 /* programs trying to delete them, but... */
3416 /* anyway, we declare this as invalid and make sure they are initialised here */
3417 DEFSV;
3418 ERRSV;
3419
3199 cctx_current = cctx_new_empty (); 3420 cctx_current = cctx_new_empty ();
3200 3421
3201 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3422 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
3202 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3423 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3203 3424
3245 coroapi.prepare_cede_notself = prepare_cede_notself; 3466 coroapi.prepare_cede_notself = prepare_cede_notself;
3246 3467
3247 time_init (aTHX); 3468 time_init (aTHX);
3248 3469
3249 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL)); 3470 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3471#if CORO_JIT
3472 PUTBACK;
3473 jit_init (aTHX);
3474 SPAGAIN;
3475#endif
3250} 3476}
3251 3477
3252SV * 3478SV *
3253new (SV *klass, ...) 3479new (SV *klass, ...)
3254 ALIAS: 3480 ALIAS:
3396 PROTOTYPE: $ 3622 PROTOTYPE: $
3397 ALIAS: 3623 ALIAS:
3398 is_ready = CF_READY 3624 is_ready = CF_READY
3399 is_running = CF_RUNNING 3625 is_running = CF_RUNNING
3400 is_new = CF_NEW 3626 is_new = CF_NEW
3401 is_destroyed = CF_DESTROYED 3627 is_destroyed = CF_ZOMBIE
3628 is_zombie = CF_ZOMBIE
3402 is_suspended = CF_SUSPENDED 3629 is_suspended = CF_SUSPENDED
3403 CODE: 3630 CODE:
3404 RETVAL = boolSV (coro->flags & ix); 3631 RETVAL = boolSV (coro->flags & ix);
3405 OUTPUT: 3632 OUTPUT:
3406 RETVAL 3633 RETVAL
3501times (Coro::State self) 3728times (Coro::State self)
3502 PPCODE: 3729 PPCODE:
3503{ 3730{
3504 struct coro *current = SvSTATE (coro_current); 3731 struct coro *current = SvSTATE (coro_current);
3505 3732
3506 if (expect_false (current == self)) 3733 if (ecb_expect_false (current == self))
3507 { 3734 {
3508 coro_times_update (); 3735 coro_times_update ();
3509 coro_times_add (SvSTATE (coro_current)); 3736 coro_times_add (SvSTATE (coro_current));
3510 } 3737 }
3511 3738
3512 EXTEND (SP, 2); 3739 EXTEND (SP, 2);
3513 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9))); 3740 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3514 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9))); 3741 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3515 3742
3516 if (expect_false (current == self)) 3743 if (ecb_expect_false (current == self))
3517 coro_times_sub (SvSTATE (coro_current)); 3744 coro_times_sub (SvSTATE (coro_current));
3518} 3745}
3519 3746
3520void 3747void
3521swap_sv (Coro::State coro, SV *sv, SV *swapsv) 3748swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3542BOOT: 3769BOOT:
3543{ 3770{
3544 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3771 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3545 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3772 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3546 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD); 3773 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3547 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3548 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); 3774 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3549 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3775 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3550 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); 3776 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3551 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); 3777 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3552 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); 3778 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3595void 3821void
3596_destroy (Coro::State coro) 3822_destroy (Coro::State coro)
3597 CODE: 3823 CODE:
3598 /* used by the manager thread */ 3824 /* used by the manager thread */
3599 coro_state_destroy (aTHX_ coro); 3825 coro_state_destroy (aTHX_ coro);
3826
3827void
3828on_destroy (Coro::State coro, SV *cb)
3829 CODE:
3600 coro_call_on_destroy (aTHX_ coro); 3830 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3831
3832void
3833join (...)
3834 CODE:
3835 CORO_EXECUTE_SLF_XS (slf_init_join);
3601 3836
3602void 3837void
3603terminate (...) 3838terminate (...)
3604 CODE: 3839 CODE:
3605 CORO_EXECUTE_SLF_XS (slf_init_terminate); 3840 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3606 3841
3607void 3842void
3608cancel (...) 3843cancel (...)
3609 CODE: 3844 CODE:
3610 CORO_EXECUTE_SLF_XS (slf_init_cancel); 3845 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3846
3847int
3848safe_cancel (Coro::State self, ...)
3849 C_ARGS: aTHX_ self, &ST (1), items - 1
3611 3850
3612void 3851void
3613schedule (...) 3852schedule (...)
3614 CODE: 3853 CODE:
3615 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3854 CORO_EXECUTE_SLF_XS (slf_init_schedule);

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