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Comparing Coro/Coro/State.xs (file contents):
Revision 1.224 by root, Sun Mar 2 16:10:22 2008 UTC vs.
Revision 1.266 by root, Fri Nov 14 03:26:22 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
14#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
15#include <inttypes.h> /* portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif
16 25
17#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
18# include <unistd.h> 27# include <unistd.h>
19# include <sys/mman.h> 28# include <sys/mman.h>
20# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
37# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
38#endif 47#endif
39 48
40#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
41# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
42# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43#else
44# define REGISTER_STACK(cctx,start,end)
45#endif 51#endif
46 52
47/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
48#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
49 55
50#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
51 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
52 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
53 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
72# ifndef IS_PADCONST 78# ifndef IS_PADCONST
73# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
74# endif 80# endif
75#endif 81#endif
76 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
77/* 5.8.8 */ 93/* 5.8.8 */
78#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
79# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
80#endif 96#endif
81#ifndef newSV 97#ifndef newSV
82# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
83#endif
84
85/* 5.11 */
86#ifndef CxHASARGS
87# define CxHASARGS(cx) (cx)->blk_sub.hasargs
88#endif 99#endif
89 100
90/* 5.8.7 */ 101/* 5.8.7 */
91#ifndef SvRV_set 102#ifndef SvRV_set
92# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
… …
112 123
113#define IN_DESTRUCT (PL_main_cv == Nullcv) 124#define IN_DESTRUCT (PL_main_cv == Nullcv)
114 125
115#if __GNUC__ >= 3 126#if __GNUC__ >= 3
116# define attribute(x) __attribute__(x) 127# define attribute(x) __attribute__(x)
117# define BARRIER __asm__ __volatile__ ("" : : : "memory")
118# define expect(expr,value) __builtin_expect ((expr),(value)) 128# define expect(expr,value) __builtin_expect ((expr),(value))
129# define INLINE static inline
119#else 130#else
120# define attribute(x) 131# define attribute(x)
121# define BARRIER
122# define expect(expr,value) (expr) 132# define expect(expr,value) (expr)
133# define INLINE static
123#endif 134#endif
124 135
125#define expect_false(expr) expect ((expr) != 0, 0) 136#define expect_false(expr) expect ((expr) != 0, 0)
126#define expect_true(expr) expect ((expr) != 0, 1) 137#define expect_true(expr) expect ((expr) != 0, 1)
127 138
128#define NOINLINE attribute ((noinline)) 139#define NOINLINE attribute ((noinline))
129 140
130#include "CoroAPI.h" 141#include "CoroAPI.h"
131 142
132#ifdef USE_ITHREADS 143#ifdef USE_ITHREADS
144
133static perl_mutex coro_mutex; 145static perl_mutex coro_lock;
134# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
135# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD
149static void *coro_thx;
150# endif
151
136#else 152#else
153
137# define LOCK (void)0 154# define LOCK (void)0
138# define UNLOCK (void)0 155# define UNLOCK (void)0
156
139#endif 157#endif
158
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
140 163
141/* helper storage struct for Coro::AIO */ 164/* helper storage struct for Coro::AIO */
142struct io_state 165struct io_state
143{ 166{
167 AV *res;
144 int errorno; 168 int errorno;
145 I32 laststype; 169 I32 laststype; /* U16 in 5.10.0 */
146 int laststatval; 170 int laststatval;
147 Stat_t statcache; 171 Stat_t statcache;
148}; 172};
149 173
174static double (*nvtime)(); /* so why doesn't it take void? */
175
176static U32 cctx_gen;
150static size_t coro_stacksize = CORO_STACKSIZE; 177static size_t cctx_stacksize = CORO_STACKSIZE;
151static struct CoroAPI coroapi; 178static struct CoroAPI coroapi;
152static AV *main_mainstack; /* used to differentiate between $main and others */ 179static AV *main_mainstack; /* used to differentiate between $main and others */
153static JMPENV *main_top_env; 180static JMPENV *main_top_env;
154static HV *coro_state_stash, *coro_stash; 181static HV *coro_state_stash, *coro_stash;
155static volatile SV *coro_mortal; /* will be freed after next transfer */ 182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184
185struct transfer_args
186{
187 struct coro *prev, *next;
188};
156 189
157static GV *irsgv; /* $/ */ 190static GV *irsgv; /* $/ */
158static GV *stdoutgv; /* *STDOUT */ 191static GV *stdoutgv; /* *STDOUT */
159static SV *rv_diehook; 192static SV *rv_diehook;
160static SV *rv_warnhook; 193static SV *rv_warnhook;
… …
162 195
163/* async_pool helper stuff */ 196/* async_pool helper stuff */
164static SV *sv_pool_rss; 197static SV *sv_pool_rss;
165static SV *sv_pool_size; 198static SV *sv_pool_size;
166static AV *av_async_pool; 199static AV *av_async_pool;
200
201/* Coro::AnyEvent */
202static SV *sv_activity;
167 203
168static struct coro_cctx *cctx_first; 204static struct coro_cctx *cctx_first;
169static int cctx_count, cctx_idle; 205static int cctx_count, cctx_idle;
170 206
171enum { 207enum {
… …
189 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 225 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
190 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 226 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
191 JMPENV *top_env; 227 JMPENV *top_env;
192 coro_context cctx; 228 coro_context cctx;
193 229
230 U32 gen;
194#if CORO_USE_VALGRIND 231#if CORO_USE_VALGRIND
195 int valgrind_id; 232 int valgrind_id;
196#endif 233#endif
197 unsigned char flags; 234 unsigned char flags;
198} coro_cctx; 235} coro_cctx;
… …
257#define PRIO_IDLE -3 294#define PRIO_IDLE -3
258#define PRIO_MIN -4 295#define PRIO_MIN -4
259 296
260/* for Coro.pm */ 297/* for Coro.pm */
261static SV *coro_current; 298static SV *coro_current;
299static SV *coro_readyhook;
262static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
263static int coro_nready; 301static int coro_nready;
264static struct coro *coro_first; 302static struct coro *coro_first;
265 303
266/** lowlevel stuff **********************************************************/ 304/** lowlevel stuff **********************************************************/
267 305
268static SV * 306static SV *
269coro_get_sv (pTHX_ const char *name, int create) 307coro_get_sv (pTHX_ const char *name, int create)
270{ 308{
271#if PERL_VERSION_ATLEAST (5,9,0) 309#if PERL_VERSION_ATLEAST (5,10,0)
272 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 310 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
273 get_sv (name, create); 311 get_sv (name, create);
274#endif 312#endif
275 return get_sv (name, create); 313 return get_sv (name, create);
276} 314}
277 315
278static AV * 316static AV *
279coro_get_av (pTHX_ const char *name, int create) 317coro_get_av (pTHX_ const char *name, int create)
280{ 318{
281#if PERL_VERSION_ATLEAST (5,9,0) 319#if PERL_VERSION_ATLEAST (5,10,0)
282 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 320 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
283 get_av (name, create); 321 get_av (name, create);
284#endif 322#endif
285 return get_av (name, create); 323 return get_av (name, create);
286} 324}
287 325
288static HV * 326static HV *
289coro_get_hv (pTHX_ const char *name, int create) 327coro_get_hv (pTHX_ const char *name, int create)
290{ 328{
291#if PERL_VERSION_ATLEAST (5,9,0) 329#if PERL_VERSION_ATLEAST (5,10,0)
292 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
293 get_hv (name, create); 331 get_hv (name, create);
294#endif 332#endif
295 return get_hv (name, create); 333 return get_hv (name, create);
296} 334}
… …
301 AV *padlist = CvPADLIST (cv); 339 AV *padlist = CvPADLIST (cv);
302 AV *newpadlist, *newpad; 340 AV *newpadlist, *newpad;
303 341
304 newpadlist = newAV (); 342 newpadlist = newAV ();
305 AvREAL_off (newpadlist); 343 AvREAL_off (newpadlist);
306#if PERL_VERSION_ATLEAST (5,9,0) 344#if PERL_VERSION_ATLEAST (5,10,0)
307 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 345 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
308#else 346#else
309 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
310#endif 348#endif
311 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 349 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
312 --AvFILLp (padlist); 350 --AvFILLp (padlist);
313 351
314 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 352 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
315 av_store (newpadlist, 1, (SV *)newpad); 353 av_store (newpadlist, 1, (SV *)newpad);
316 354
317 return newpadlist; 355 return newpadlist;
318} 356}
319 357
… …
349 387
350 /* casting is fun. */ 388 /* casting is fun. */
351 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 389 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
352 free_padlist (aTHX_ padlist); 390 free_padlist (aTHX_ padlist);
353 391
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393
354 return 0; 394 return 0;
355} 395}
356 396
357#define CORO_MAGIC_type_cv PERL_MAGIC_ext 397#define CORO_MAGIC_type_cv PERL_MAGIC_ext
358#define CORO_MAGIC_type_state PERL_MAGIC_ext 398#define CORO_MAGIC_type_state PERL_MAGIC_ext
… …
360static MGVTBL coro_cv_vtbl = { 400static MGVTBL coro_cv_vtbl = {
361 0, 0, 0, 0, 401 0, 0, 0, 0,
362 coro_cv_free 402 coro_cv_free
363}; 403};
364 404
365#define CORO_MAGIC(sv,type) \ 405#define CORO_MAGIC(sv, type) \
366 SvMAGIC (sv) \ 406 SvMAGIC (sv) \
367 ? SvMAGIC (sv)->mg_type == type \ 407 ? SvMAGIC (sv)->mg_type == type \
368 ? SvMAGIC (sv) \ 408 ? SvMAGIC (sv) \
369 : mg_find (sv, type) \ 409 : mg_find (sv, type) \
370 : 0 410 : 0
371 411
372#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
373#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
374 414
375static struct coro * 415INLINE struct coro *
376SvSTATE_ (pTHX_ SV *coro) 416SvSTATE_ (pTHX_ SV *coro)
377{ 417{
378 HV *stash; 418 HV *stash;
379 MAGIC *mg; 419 MAGIC *mg;
380 420
… …
408 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 448 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
409 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 449 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
410 else 450 else
411 { 451 {
412#if CORO_PREFER_PERL_FUNCTIONS 452#if CORO_PREFER_PERL_FUNCTIONS
413 /* this is probably cleaner, but also slower? */ 453 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */
414 CV *cp = Perl_cv_clone (cv); 455 CV *cp = Perl_cv_clone (cv);
415 CvPADLIST (cv) = CvPADLIST (cp); 456 CvPADLIST (cv) = CvPADLIST (cp);
416 CvPADLIST (cp) = 0; 457 CvPADLIST (cp) = 0;
417 SvREFCNT_dec (cp); 458 SvREFCNT_dec (cp);
418#else 459#else
… …
502 543
503 if (expect_true (CvDEPTH (cv))) 544 if (expect_true (CvDEPTH (cv)))
504 { 545 {
505 EXTEND (SP, 3); 546 EXTEND (SP, 3);
506 PUSHs ((SV *)CvPADLIST (cv)); 547 PUSHs ((SV *)CvPADLIST (cv));
507 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 548 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508 PUSHs ((SV *)cv); 549 PUSHs ((SV *)cv);
509 550
510 CvDEPTH (cv) = 0; 551 CvDEPTH (cv) = 0;
511 get_padlist (aTHX_ cv); 552 get_padlist (aTHX_ cv);
512 } 553 }
… …
592 633
593 New(54,PL_savestack,24,ANY); 634 New(54,PL_savestack,24,ANY);
594 PL_savestack_ix = 0; 635 PL_savestack_ix = 0;
595 PL_savestack_max = 24; 636 PL_savestack_max = 24;
596 637
597#if !PERL_VERSION_ATLEAST (5,9,0) 638#if !PERL_VERSION_ATLEAST (5,10,0)
598 New(54,PL_retstack,4,OP*); 639 New(54,PL_retstack,4,OP*);
599 PL_retstack_ix = 0; 640 PL_retstack_ix = 0;
600 PL_retstack_max = 4; 641 PL_retstack_max = 4;
601#endif 642#endif
602} 643}
… …
604 645
605/* 646/*
606 * destroy the stacks, the callchain etc... 647 * destroy the stacks, the callchain etc...
607 */ 648 */
608static void 649static void
609coro_destroy_stacks (pTHX) 650coro_destruct_stacks (pTHX)
610{ 651{
611 while (PL_curstackinfo->si_next) 652 while (PL_curstackinfo->si_next)
612 PL_curstackinfo = PL_curstackinfo->si_next; 653 PL_curstackinfo = PL_curstackinfo->si_next;
613 654
614 while (PL_curstackinfo) 655 while (PL_curstackinfo)
… …
625 666
626 Safefree (PL_tmps_stack); 667 Safefree (PL_tmps_stack);
627 Safefree (PL_markstack); 668 Safefree (PL_markstack);
628 Safefree (PL_scopestack); 669 Safefree (PL_scopestack);
629 Safefree (PL_savestack); 670 Safefree (PL_savestack);
630#if !PERL_VERSION_ATLEAST (5,9,0) 671#if !PERL_VERSION_ATLEAST (5,10,0)
631 Safefree (PL_retstack); 672 Safefree (PL_retstack);
632#endif 673#endif
633} 674}
634 675
635static size_t 676static size_t
… …
651 #undef VAR 692 #undef VAR
652 } 693 }
653 else 694 else
654 slot = coro->slot; 695 slot = coro->slot;
655 696
697 if (slot)
698 {
656 rss += sizeof (slot->curstackinfo); 699 rss += sizeof (slot->curstackinfo);
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659 rss += slot->tmps_max * sizeof (SV *); 702 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32); 704 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY); 705 rss += slot->savestack_max * sizeof (ANY);
663 706
664#if !PERL_VERSION_ATLEAST (5,9,0) 707#if !PERL_VERSION_ATLEAST (5,10,0)
665 rss += slot->retstack_max * sizeof (OP *); 708 rss += slot->retstack_max * sizeof (OP *);
666#endif 709#endif
710 }
667 } 711 }
668 712
669 return rss; 713 return rss;
714}
715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we somtimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 SV **bot = SP;
728
729 int gimme = GIMME_V;
730
731 /* make sure we put something on the stack in scalar context */
732 if (gimme == G_SCALAR)
733 {
734 if (sp == bot)
735 XPUSHs (&PL_sv_undef);
736
737 SP = bot + 1;
738 }
739
740 PUTBACK;
670} 741}
671 742
672/** coroutine stack handling ************************************************/ 743/** coroutine stack handling ************************************************/
673 744
674static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 745static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
675static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 746static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
747static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
748
749/* apparently < 5.8.8 */
750#ifndef MgPV_nolen_const
751#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
752 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
753 (const char*)(mg)->mg_ptr)
754#endif
676 755
677/* 756/*
678 * This overrides the default magic get method of %SIG elements. 757 * This overrides the default magic get method of %SIG elements.
679 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 758 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
680 * and instead of tryign to save and restore the hash elements, we just provide 759 * and instead of tryign to save and restore the hash elements, we just provide
… …
688{ 767{
689 const char *s = MgPV_nolen_const (mg); 768 const char *s = MgPV_nolen_const (mg);
690 769
691 if (*s == '_') 770 if (*s == '_')
692 { 771 {
693 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 772 SV **svp = 0;
694 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 773
774 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776
777 if (svp)
778 {
779 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
780 return 0;
781 }
695 } 782 }
696 783
697 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 784 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
785}
786
787static int
788coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
789{
790 const char *s = MgPV_nolen_const (mg);
791
792 if (*s == '_')
793 {
794 SV **svp = 0;
795
796 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
797 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
798
799 if (svp)
800 {
801 SV *old = *svp;
802 *svp = 0;
803 SvREFCNT_dec (old);
804 return 0;
805 }
806 }
807
808 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
698} 809}
699 810
700static int 811static int
701coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 812coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
702{ 813{
… …
712 if (svp) 823 if (svp)
713 { 824 {
714 SV *old = *svp; 825 SV *old = *svp;
715 *svp = newSVsv (sv); 826 *svp = newSVsv (sv);
716 SvREFCNT_dec (old); 827 SvREFCNT_dec (old);
717 return; 828 return 0;
718 } 829 }
719 } 830 }
720 831
721 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 832 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
722} 833}
… …
736 PL_curpm = 0; 847 PL_curpm = 0;
737 PL_curpad = 0; 848 PL_curpad = 0;
738 PL_localizing = 0; 849 PL_localizing = 0;
739 PL_dirty = 0; 850 PL_dirty = 0;
740 PL_restartop = 0; 851 PL_restartop = 0;
852#if PERL_VERSION_ATLEAST (5,10,0)
853 PL_parser = 0;
854#endif
741 855
742 /* recreate the die/warn hooks */ 856 /* recreate the die/warn hooks */
743 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 857 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
744 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 858 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
745 859
746 GvSV (PL_defgv) = newSV (0); 860 GvSV (PL_defgv) = newSV (0);
747 GvAV (PL_defgv) = coro->args; coro->args = 0; 861 GvAV (PL_defgv) = coro->args; coro->args = 0;
748 GvSV (PL_errgv) = newSV (0); 862 GvSV (PL_errgv) = newSV (0);
749 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 863 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
750 PL_rs = newSVsv (GvSV (irsgv)); 864 PL_rs = newSVsv (GvSV (irsgv));
751 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 865 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
752 866
753 { 867 {
754 dSP; 868 dSP;
755 LOGOP myop; 869 UNOP myop;
756 870
757 Zero (&myop, 1, LOGOP); 871 Zero (&myop, 1, UNOP);
758 myop.op_next = Nullop; 872 myop.op_next = Nullop;
759 myop.op_flags = OPf_WANT_VOID; 873 myop.op_flags = OPf_WANT_VOID;
760 874
761 PUSHMARK (SP); 875 PUSHMARK (SP);
762 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 876 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
765 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 879 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
766 SPAGAIN; 880 SPAGAIN;
767 } 881 }
768 882
769 /* this newly created coroutine might be run on an existing cctx which most 883 /* this newly created coroutine might be run on an existing cctx which most
770 * likely was suspended in set_stacklevel, called from entersub. 884 * likely was suspended in set_stacklevel, called from pp_set_stacklevel,
771 * set_stacklevl doesn't do anything on return, but entersub does LEAVE, 885 * so we have to emulate entering pp_set_stacklevel here.
772 * so we ENTER here for symmetry
773 */ 886 */
774 ENTER; 887 SSL_HEAD;
775} 888}
776 889
777static void 890static void
778coro_destroy (pTHX_ struct coro *coro) 891coro_destruct (pTHX_ struct coro *coro)
779{ 892{
780 if (!IN_DESTRUCT) 893 if (!IN_DESTRUCT)
781 { 894 {
782 /* restore all saved variables and stuff */ 895 /* restore all saved variables and stuff */
783 LEAVE_SCOPE (0); 896 LEAVE_SCOPE (0);
… …
805 SvREFCNT_dec (PL_warnhook); 918 SvREFCNT_dec (PL_warnhook);
806 919
807 SvREFCNT_dec (coro->saved_deffh); 920 SvREFCNT_dec (coro->saved_deffh);
808 SvREFCNT_dec (coro->throw); 921 SvREFCNT_dec (coro->throw);
809 922
810 coro_destroy_stacks (aTHX); 923 coro_destruct_stacks (aTHX);
811} 924}
812 925
813static void 926INLINE void
814free_coro_mortal (pTHX) 927free_coro_mortal (pTHX)
815{ 928{
816 if (expect_true (coro_mortal)) 929 if (expect_true (coro_mortal))
817 { 930 {
818 SvREFCNT_dec (coro_mortal); 931 SvREFCNT_dec (coro_mortal);
… …
852 : cx->blk_gimme == G_SCALAR ? bot + 1 965 : cx->blk_gimme == G_SCALAR ? bot + 1
853 : bot; 966 : bot;
854 967
855 av_extend (av, top - bot); 968 av_extend (av, top - bot);
856 while (bot < top) 969 while (bot < top)
857 av_push (av, SvREFCNT_inc (*bot++)); 970 av_push (av, SvREFCNT_inc_NN (*bot++));
858 971
859 PL_runops = RUNOPS_DEFAULT; 972 PL_runops = RUNOPS_DEFAULT;
860 ENTER; 973 ENTER;
861 SAVETMPS; 974 SAVETMPS;
862 EXTEND (SP, 3); 975 EXTEND (SP, 3);
… …
942 1055
943 TAINT_NOT; 1056 TAINT_NOT;
944 return 0; 1057 return 0;
945} 1058}
946 1059
1060static void
1061prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
1062{
1063 ta->prev = (struct coro *)cctx;
1064 ta->next = 0;
1065}
1066
947/* inject a fake call to Coro::State::_cctx_init into the execution */ 1067/* inject a fake call to Coro::State::_cctx_init into the execution */
948/* _cctx_init should be careful, as it could be called at almost any time */ 1068/* _cctx_init should be careful, as it could be called at almost any time */
949/* during execution of a perl program */ 1069/* during execution of a perl program */
1070/* also initialises PL_top_env */
950static void NOINLINE 1071static void NOINLINE
951cctx_prepare (pTHX_ coro_cctx *cctx) 1072cctx_prepare (pTHX_ coro_cctx *cctx)
952{ 1073{
953 dSP; 1074 dSP;
954 LOGOP myop; 1075 UNOP myop;
955 1076
956 PL_top_env = &PL_start_env; 1077 PL_top_env = &PL_start_env;
957 1078
958 if (cctx->flags & CC_TRACE) 1079 if (cctx->flags & CC_TRACE)
959 PL_runops = runops_trace; 1080 PL_runops = runops_trace;
960 1081
961 Zero (&myop, 1, LOGOP); 1082 Zero (&myop, 1, UNOP);
962 myop.op_next = PL_op; 1083 myop.op_next = PL_op;
963 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1084 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
964 1085
965 PUSHMARK (SP); 1086 PUSHMARK (SP);
966 EXTEND (SP, 2); 1087 EXTEND (SP, 2);
967 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1088 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
968 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1089 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
969 PUTBACK; 1090 PUTBACK;
970 PL_op = (OP *)&myop; 1091 PL_op = (OP *)&myop;
971 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1092 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
972 SPAGAIN; 1093 SPAGAIN;
973} 1094}
974 1095
1096/* the tail of transfer: execute stuff we can only do after a transfer */
1097INLINE void
1098transfer_tail (pTHX)
1099{
1100 struct coro *next = (struct coro *)transfer_next;
1101 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1102 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1103
1104 free_coro_mortal (aTHX);
1105 UNLOCK;
1106
1107 if (expect_false (next->throw))
1108 {
1109 SV *exception = sv_2mortal (next->throw);
1110
1111 next->throw = 0;
1112 sv_setsv (ERRSV, exception);
1113 croak (0);
1114 }
1115}
1116
975/* 1117/*
976 * this is a _very_ stripped down perl interpreter ;) 1118 * this is a _very_ stripped down perl interpreter ;)
977 */ 1119 */
978static void 1120static void
979cctx_run (void *arg) 1121cctx_run (void *arg)
980{ 1122{
1123#ifdef USE_ITHREADS
1124# if CORO_PTHREAD
1125 PERL_SET_CONTEXT (coro_thx);
1126# endif
1127#endif
1128 {
981 dTHX; 1129 dTHX;
982 1130
983 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1131 /* we are the alternative tail to pp_set_stacklevel */
984 UNLOCK; 1132 /* so do the same things here */
1133 SSL_TAIL;
985 1134
986 /* we now skip the entersub that lead to transfer() */ 1135 /* we now skip the op that did lead to transfer() */
987 PL_op = PL_op->op_next; 1136 PL_op = PL_op->op_next;
988 1137
989 /* inject a fake subroutine call to cctx_init */ 1138 /* inject a fake subroutine call to cctx_init */
990 cctx_prepare (aTHX_ (coro_cctx *)arg); 1139 cctx_prepare (aTHX_ (coro_cctx *)arg);
991 1140
1141 /* cctx_run is the alternative tail of transfer() */
1142 transfer_tail (aTHX);
1143
992 /* somebody or something will hit me for both perl_run and PL_restartop */ 1144 /* somebody or something will hit me for both perl_run and PL_restartop */
993 PL_restartop = PL_op; 1145 PL_restartop = PL_op;
994 perl_run (PL_curinterp); 1146 perl_run (PL_curinterp);
995 1147
996 /* 1148 /*
997 * If perl-run returns we assume exit() was being called or the coro 1149 * If perl-run returns we assume exit() was being called or the coro
998 * fell off the end, which seems to be the only valid (non-bug) 1150 * fell off the end, which seems to be the only valid (non-bug)
999 * reason for perl_run to return. We try to exit by jumping to the 1151 * reason for perl_run to return. We try to exit by jumping to the
1000 * bootstrap-time "top" top_env, as we cannot restore the "main" 1152 * bootstrap-time "top" top_env, as we cannot restore the "main"
1001 * coroutine as Coro has no such concept 1153 * coroutine as Coro has no such concept
1002 */ 1154 */
1003 PL_top_env = main_top_env; 1155 PL_top_env = main_top_env;
1004 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1156 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1157 }
1005} 1158}
1006 1159
1007static coro_cctx * 1160static coro_cctx *
1008cctx_new () 1161cctx_new ()
1009{ 1162{
1010 coro_cctx *cctx; 1163 coro_cctx *cctx;
1164
1165 ++cctx_count;
1166 New (0, cctx, 1, coro_cctx);
1167
1168 cctx->gen = cctx_gen;
1169 cctx->flags = 0;
1170 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1171
1172 return cctx;
1173}
1174
1175/* create a new cctx only suitable as source */
1176static coro_cctx *
1177cctx_new_empty ()
1178{
1179 coro_cctx *cctx = cctx_new ();
1180
1181 cctx->sptr = 0;
1182 coro_create (&cctx->cctx, 0, 0, 0, 0);
1183
1184 return cctx;
1185}
1186
1187/* create a new cctx suitable as destination/running a perl interpreter */
1188static coro_cctx *
1189cctx_new_run ()
1190{
1191 coro_cctx *cctx = cctx_new ();
1011 void *stack_start; 1192 void *stack_start;
1012 size_t stack_size; 1193 size_t stack_size;
1013 1194
1014 ++cctx_count;
1015
1016 Newz (0, cctx, 1, coro_cctx);
1017
1018#if HAVE_MMAP 1195#if HAVE_MMAP
1019 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1196 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1020 /* mmap supposedly does allocate-on-write for us */ 1197 /* mmap supposedly does allocate-on-write for us */
1021 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1198 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1022 1199
1023 if (cctx->sptr != (void *)-1) 1200 if (cctx->sptr != (void *)-1)
1024 { 1201 {
1025# if CORO_STACKGUARD 1202 #if CORO_STACKGUARD
1026 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1203 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1027# endif 1204 #endif
1028 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1205 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1029 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1206 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1030 cctx->flags |= CC_MAPPED; 1207 cctx->flags |= CC_MAPPED;
1031 } 1208 }
1032 else 1209 else
1033#endif 1210#endif
1034 { 1211 {
1035 cctx->ssize = coro_stacksize * (long)sizeof (long); 1212 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1036 New (0, cctx->sptr, coro_stacksize, long); 1213 New (0, cctx->sptr, cctx_stacksize, long);
1037 1214
1038 if (!cctx->sptr) 1215 if (!cctx->sptr)
1039 { 1216 {
1040 perror ("FATAL: unable to allocate stack for coroutine"); 1217 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1041 _exit (EXIT_FAILURE); 1218 _exit (EXIT_FAILURE);
1042 } 1219 }
1043 1220
1044 stack_start = cctx->sptr; 1221 stack_start = cctx->sptr;
1045 stack_size = cctx->ssize; 1222 stack_size = cctx->ssize;
1046 } 1223 }
1047 1224
1048 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1225 #if CORO_USE_VALGRIND
1226 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1227 #endif
1228
1049 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1229 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1050 1230
1051 return cctx; 1231 return cctx;
1052} 1232}
1053 1233
… …
1056{ 1236{
1057 if (!cctx) 1237 if (!cctx)
1058 return; 1238 return;
1059 1239
1060 --cctx_count; 1240 --cctx_count;
1241 coro_destroy (&cctx->cctx);
1061 1242
1243 /* coro_transfer creates new, empty cctx's */
1244 if (cctx->sptr)
1245 {
1062#if CORO_USE_VALGRIND 1246 #if CORO_USE_VALGRIND
1063 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1247 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1064#endif 1248 #endif
1065 1249
1066#if HAVE_MMAP 1250#if HAVE_MMAP
1067 if (cctx->flags & CC_MAPPED) 1251 if (cctx->flags & CC_MAPPED)
1068 munmap (cctx->sptr, cctx->ssize); 1252 munmap (cctx->sptr, cctx->ssize);
1069 else 1253 else
1070#endif 1254#endif
1071 Safefree (cctx->sptr); 1255 Safefree (cctx->sptr);
1256 }
1072 1257
1073 Safefree (cctx); 1258 Safefree (cctx);
1074} 1259}
1075 1260
1076/* wether this cctx should be destructed */ 1261/* wether this cctx should be destructed */
1077#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1262#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1078 1263
1079static coro_cctx * 1264static coro_cctx *
1080cctx_get (pTHX) 1265cctx_get (pTHX)
1081{ 1266{
1082 while (expect_true (cctx_first)) 1267 while (expect_true (cctx_first))
… …
1089 return cctx; 1274 return cctx;
1090 1275
1091 cctx_destroy (cctx); 1276 cctx_destroy (cctx);
1092 } 1277 }
1093 1278
1094 return cctx_new (); 1279 return cctx_new_run ();
1095} 1280}
1096 1281
1097static void 1282static void
1098cctx_put (coro_cctx *cctx) 1283cctx_put (coro_cctx *cctx)
1099{ 1284{
1285 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1286
1100 /* free another cctx if overlimit */ 1287 /* free another cctx if overlimit */
1101 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1288 if (expect_false (cctx_idle >= cctx_max_idle))
1102 { 1289 {
1103 coro_cctx *first = cctx_first; 1290 coro_cctx *first = cctx_first;
1104 cctx_first = first->next; 1291 cctx_first = first->next;
1105 --cctx_idle; 1292 --cctx_idle;
1106 1293
… …
1126 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1313 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1127 1314
1128 if (expect_false (next->flags & CF_DESTROYED)) 1315 if (expect_false (next->flags & CF_DESTROYED))
1129 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1316 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1130 1317
1131 if (
1132#if PERL_VERSION_ATLEAST (5,9,0) 1318#if !PERL_VERSION_ATLEAST (5,10,0)
1133 expect_false (PL_parser && PL_parser->lex_state != LEX_NOTPARSING)
1134#else
1135 expect_false (PL_lex_state != LEX_NOTPARSING) 1319 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1136#endif
1137 )
1138 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1320 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1321#endif
1139 } 1322 }
1140} 1323}
1141 1324
1142/* always use the TRANSFER macro */ 1325/* always use the TRANSFER macro */
1143static void NOINLINE 1326static void NOINLINE
1144transfer (pTHX_ struct coro *prev, struct coro *next) 1327transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1145{ 1328{
1146 dSTACKLEVEL; 1329 dSTACKLEVEL;
1147 static volatile int has_throw;
1148 1330
1149 /* sometimes transfer is only called to set idle_sp */ 1331 /* sometimes transfer is only called to set idle_sp */
1150 if (expect_false (!next)) 1332 if (expect_false (!next))
1151 { 1333 {
1152 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1334 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
… …
1156 { 1338 {
1157 coro_cctx *prev__cctx; 1339 coro_cctx *prev__cctx;
1158 1340
1159 if (expect_false (prev->flags & CF_NEW)) 1341 if (expect_false (prev->flags & CF_NEW))
1160 { 1342 {
1161 /* create a new empty context */ 1343 /* create a new empty/source context */
1162 Newz (0, prev->cctx, 1, coro_cctx); 1344 prev->cctx = cctx_new_empty ();
1163 prev->flags &= ~CF_NEW; 1345 prev->flags &= ~CF_NEW;
1164 prev->flags |= CF_RUNNING; 1346 prev->flags |= CF_RUNNING;
1165 } 1347 }
1166 1348
1167 prev->flags &= ~CF_RUNNING; 1349 prev->flags &= ~CF_RUNNING;
… …
1182 else 1364 else
1183 load_perl (aTHX_ next); 1365 load_perl (aTHX_ next);
1184 1366
1185 prev__cctx = prev->cctx; 1367 prev__cctx = prev->cctx;
1186 1368
1187 /* possibly "free" the cctx */ 1369 /* possibly untie and reuse the cctx */
1188 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1370 if (expect_true (
1371 prev__cctx->idle_sp == STACKLEVEL
1372 && !(prev__cctx->flags & CC_TRACE)
1373 && !force_cctx
1374 ))
1189 { 1375 {
1190 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1376 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1191 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1377 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1192 1378
1193 prev->cctx = 0; 1379 prev->cctx = 0;
1194 1380
1195 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1381 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1196 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1382 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1204 ++next->usecount; 1390 ++next->usecount;
1205 1391
1206 if (expect_true (!next->cctx)) 1392 if (expect_true (!next->cctx))
1207 next->cctx = cctx_get (aTHX); 1393 next->cctx = cctx_get (aTHX);
1208 1394
1209 has_throw = !!next->throw; 1395 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1396 transfer_next = next;
1210 1397
1211 if (expect_false (prev__cctx != next->cctx)) 1398 if (expect_false (prev__cctx != next->cctx))
1212 { 1399 {
1213 prev__cctx->top_env = PL_top_env; 1400 prev__cctx->top_env = PL_top_env;
1214 PL_top_env = next->cctx->top_env; 1401 PL_top_env = next->cctx->top_env;
1215 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1402 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1216 } 1403 }
1217 1404
1218 free_coro_mortal (aTHX); 1405 transfer_tail (aTHX);
1219 UNLOCK;
1220
1221 if (expect_false (has_throw))
1222 {
1223 struct coro *coro = SvSTATE (coro_current);
1224
1225 if (coro->throw)
1226 {
1227 SV *exception = coro->throw;
1228 coro->throw = 0;
1229 sv_setsv (ERRSV, exception);
1230 croak (0);
1231 }
1232 }
1233 } 1406 }
1234} 1407}
1235 1408
1236struct transfer_args
1237{
1238 struct coro *prev, *next;
1239};
1240
1241#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1409#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1242#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1410#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1243 1411
1244/** high level stuff ********************************************************/ 1412/** high level stuff ********************************************************/
1245 1413
1246static int 1414static int
… …
1270 croak ("FATAL: tried to destroy currently running coroutine"); 1438 croak ("FATAL: tried to destroy currently running coroutine");
1271 1439
1272 save_perl (aTHX_ &temp); 1440 save_perl (aTHX_ &temp);
1273 load_perl (aTHX_ coro); 1441 load_perl (aTHX_ coro);
1274 1442
1275 coro_destroy (aTHX_ coro); 1443 coro_destruct (aTHX_ coro);
1276 1444
1277 load_perl (aTHX_ &temp); 1445 load_perl (aTHX_ &temp);
1278 1446
1279 coro->slot = 0; 1447 coro->slot = 0;
1280 } 1448 }
… …
1340{ 1508{
1341 dTHX; 1509 dTHX;
1342 struct transfer_args ta; 1510 struct transfer_args ta;
1343 1511
1344 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1512 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1345 TRANSFER (ta); 1513 TRANSFER (ta, 1);
1346} 1514}
1347 1515
1348/** Coro ********************************************************************/ 1516/** Coro ********************************************************************/
1349 1517
1350static void 1518static void
… …
1368static int 1536static int
1369api_ready (SV *coro_sv) 1537api_ready (SV *coro_sv)
1370{ 1538{
1371 dTHX; 1539 dTHX;
1372 struct coro *coro; 1540 struct coro *coro;
1541 SV *sv_hook;
1542 void (*xs_hook)(void);
1373 1543
1374 if (SvROK (coro_sv)) 1544 if (SvROK (coro_sv))
1375 coro_sv = SvRV (coro_sv); 1545 coro_sv = SvRV (coro_sv);
1376 1546
1377 coro = SvSTATE (coro_sv); 1547 coro = SvSTATE (coro_sv);
… …
1380 return 0; 1550 return 0;
1381 1551
1382 coro->flags |= CF_READY; 1552 coro->flags |= CF_READY;
1383 1553
1384 LOCK; 1554 LOCK;
1555
1556 sv_hook = coro_nready ? 0 : coro_readyhook;
1557 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1558
1385 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1559 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1386 ++coro_nready; 1560 ++coro_nready;
1561
1387 UNLOCK; 1562 UNLOCK;
1563
1564 if (sv_hook)
1565 {
1566 dSP;
1567
1568 ENTER;
1569 SAVETMPS;
1570
1571 PUSHMARK (SP);
1572 PUTBACK;
1573 call_sv (sv_hook, G_DISCARD);
1574 SPAGAIN;
1575
1576 FREETMPS;
1577 LEAVE;
1578 }
1579
1580 if (xs_hook)
1581 xs_hook ();
1388 1582
1389 return 1; 1583 return 1;
1390} 1584}
1391 1585
1392static int 1586static int
1393api_is_ready (SV *coro_sv) 1587api_is_ready (SV *coro_sv)
1394{ 1588{
1395 dTHX; 1589 dTHX;
1590
1396 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1591 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1397} 1592}
1398 1593
1399static void 1594INLINE void
1400prepare_schedule (pTHX_ struct transfer_args *ta) 1595prepare_schedule (pTHX_ struct transfer_args *ta)
1401{ 1596{
1402 SV *prev_sv, *next_sv; 1597 SV *prev_sv, *next_sv;
1403 1598
1404 for (;;) 1599 for (;;)
… …
1430 /* cannot transfer to destroyed coros, skip and look for next */ 1625 /* cannot transfer to destroyed coros, skip and look for next */
1431 if (expect_false (ta->next->flags & CF_DESTROYED)) 1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1432 { 1627 {
1433 UNLOCK; 1628 UNLOCK;
1434 SvREFCNT_dec (next_sv); 1629 SvREFCNT_dec (next_sv);
1435 /* coro_nready is already taken care of by destroy */ 1630 /* coro_nready has already been taken care of by destroy */
1436 continue; 1631 continue;
1437 } 1632 }
1438 1633
1439 --coro_nready; 1634 --coro_nready;
1440 UNLOCK; 1635 UNLOCK;
… …
1443 1638
1444 /* free this only after the transfer */ 1639 /* free this only after the transfer */
1445 prev_sv = SvRV (coro_current); 1640 prev_sv = SvRV (coro_current);
1446 ta->prev = SvSTATE (prev_sv); 1641 ta->prev = SvSTATE (prev_sv);
1447 TRANSFER_CHECK (*ta); 1642 TRANSFER_CHECK (*ta);
1448 assert (ta->next->flags & CF_READY); 1643 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1449 ta->next->flags &= ~CF_READY; 1644 ta->next->flags &= ~CF_READY;
1450 SvRV_set (coro_current, next_sv); 1645 SvRV_set (coro_current, next_sv);
1451 1646
1452 LOCK; 1647 LOCK;
1453 free_coro_mortal (aTHX); 1648 free_coro_mortal (aTHX);
1454 coro_mortal = prev_sv; 1649 coro_mortal = prev_sv;
1455 UNLOCK; 1650 UNLOCK;
1456} 1651}
1457 1652
1458static void 1653INLINE void
1459prepare_cede (pTHX_ struct transfer_args *ta) 1654prepare_cede (pTHX_ struct transfer_args *ta)
1460{ 1655{
1461 api_ready (coro_current); 1656 api_ready (coro_current);
1462 prepare_schedule (aTHX_ ta); 1657 prepare_schedule (aTHX_ ta);
1463} 1658}
… …
1481{ 1676{
1482 dTHX; 1677 dTHX;
1483 struct transfer_args ta; 1678 struct transfer_args ta;
1484 1679
1485 prepare_schedule (aTHX_ &ta); 1680 prepare_schedule (aTHX_ &ta);
1486 TRANSFER (ta); 1681 TRANSFER (ta, 1);
1487} 1682}
1488 1683
1489static int 1684static int
1490api_cede (void) 1685api_cede (void)
1491{ 1686{
… …
1494 1689
1495 prepare_cede (aTHX_ &ta); 1690 prepare_cede (aTHX_ &ta);
1496 1691
1497 if (expect_true (ta.prev != ta.next)) 1692 if (expect_true (ta.prev != ta.next))
1498 { 1693 {
1499 TRANSFER (ta); 1694 TRANSFER (ta, 1);
1500 return 1; 1695 return 1;
1501 } 1696 }
1502 else 1697 else
1503 return 0; 1698 return 0;
1504} 1699}
… …
1509 dTHX; 1704 dTHX;
1510 struct transfer_args ta; 1705 struct transfer_args ta;
1511 1706
1512 if (prepare_cede_notself (aTHX_ &ta)) 1707 if (prepare_cede_notself (aTHX_ &ta))
1513 { 1708 {
1514 TRANSFER (ta); 1709 TRANSFER (ta, 1);
1515 return 1; 1710 return 1;
1516 } 1711 }
1517 else 1712 else
1518 return 0; 1713 return 0;
1519} 1714}
… …
1525 struct coro *coro = SvSTATE (coro_sv); 1720 struct coro *coro = SvSTATE (coro_sv);
1526 1721
1527 if (flags & CC_TRACE) 1722 if (flags & CC_TRACE)
1528 { 1723 {
1529 if (!coro->cctx) 1724 if (!coro->cctx)
1530 coro->cctx = cctx_new (); 1725 coro->cctx = cctx_new_run ();
1531 else if (!(coro->cctx->flags & CC_TRACE)) 1726 else if (!(coro->cctx->flags & CC_TRACE))
1532 croak ("cannot enable tracing on coroutine with custom stack"); 1727 croak ("cannot enable tracing on coroutine with custom stack");
1533 1728
1534 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1729 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1535 } 1730 }
… …
1542 else 1737 else
1543 coro->slot->runops = RUNOPS_DEFAULT; 1738 coro->slot->runops = RUNOPS_DEFAULT;
1544 } 1739 }
1545} 1740}
1546 1741
1742#if 0
1743static int
1744coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1745{
1746 AV *padlist;
1747 AV *av = (AV *)mg->mg_obj;
1748
1749 abort ();
1750
1751 return 0;
1752}
1753
1754static MGVTBL coro_gensub_vtbl = {
1755 0, 0, 0, 0,
1756 coro_gensub_free
1757};
1758#endif
1759
1760/*****************************************************************************/
1761/* PerlIO::cede */
1762
1763typedef struct
1764{
1765 PerlIOBuf base;
1766 NV next, every;
1767} PerlIOCede;
1768
1769static IV
1770PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1771{
1772 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1773
1774 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1775 self->next = nvtime () + self->every;
1776
1777 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1778}
1779
1780static SV *
1781PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1782{
1783 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1784
1785 return newSVnv (self->every);
1786}
1787
1788static IV
1789PerlIOCede_flush (pTHX_ PerlIO *f)
1790{
1791 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1792 double now = nvtime ();
1793
1794 if (now >= self->next)
1795 {
1796 api_cede ();
1797 self->next = now + self->every;
1798 }
1799
1800 return PerlIOBuf_flush (aTHX_ f);
1801}
1802
1803static PerlIO_funcs PerlIO_cede =
1804{
1805 sizeof(PerlIO_funcs),
1806 "cede",
1807 sizeof(PerlIOCede),
1808 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1809 PerlIOCede_pushed,
1810 PerlIOBuf_popped,
1811 PerlIOBuf_open,
1812 PerlIOBase_binmode,
1813 PerlIOCede_getarg,
1814 PerlIOBase_fileno,
1815 PerlIOBuf_dup,
1816 PerlIOBuf_read,
1817 PerlIOBuf_unread,
1818 PerlIOBuf_write,
1819 PerlIOBuf_seek,
1820 PerlIOBuf_tell,
1821 PerlIOBuf_close,
1822 PerlIOCede_flush,
1823 PerlIOBuf_fill,
1824 PerlIOBase_eof,
1825 PerlIOBase_error,
1826 PerlIOBase_clearerr,
1827 PerlIOBase_setlinebuf,
1828 PerlIOBuf_get_base,
1829 PerlIOBuf_bufsiz,
1830 PerlIOBuf_get_ptr,
1831 PerlIOBuf_get_cnt,
1832 PerlIOBuf_set_ptrcnt,
1833};
1834
1835/*****************************************************************************/
1836
1837static const CV *ssl_cv; /* for quick consistency check */
1838
1839static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1840static SV *ssl_arg0;
1841static SV *ssl_arg1;
1842
1843/* this restores the stack in the case we patched the entersub, to */
1844/* recreate the stack frame as perl will on following calls */
1845/* since entersub cleared the stack */
1846static OP *
1847pp_restore (pTHX)
1848{
1849 dSP;
1850
1851 PUSHMARK (SP);
1852
1853 EXTEND (SP, 3);
1854 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0;
1855 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1856 PUSHs ((SV *)CvGV (ssl_cv));
1857
1858 RETURNOP (ssl_restore.op_first);
1859}
1860
1861/* declare prototype */
1862XS(XS_Coro__State__set_stacklevel);
1863
1864#define OPpENTERSUB_SSL 15
1865
1866static OP *
1867pp_set_stacklevel (pTHX)
1868{
1869 dSP;
1870 struct transfer_args ta;
1871 SV **arg = PL_stack_base + TOPMARK + 1;
1872 int items = SP - arg; /* args without function object */
1873
1874 /* do a quick consistency check on the "function" object, and if it isn't */
1875 /* for us, divert to the real entersub */
1876 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1877 return PL_ppaddr[OP_ENTERSUB](aTHX);
1878
1879 /* pop args */
1880 SP = PL_stack_base + POPMARK;
1881
1882 if (!(PL_op->op_flags & OPf_STACKED))
1883 {
1884 /* ampersand-form of call, use @_ instead of stack */
1885 AV *av = GvAV (PL_defgv);
1886 arg = AvARRAY (av);
1887 items = AvFILLp (av) + 1;
1888 }
1889
1890 PUTBACK;
1891 switch (PL_op->op_private & OPpENTERSUB_SSL)
1892 {
1893 case 0:
1894 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1895 break;
1896
1897 case 1:
1898 if (items != 2)
1899 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1900
1901 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1902 break;
1903
1904 case 2:
1905 prepare_schedule (aTHX_ &ta);
1906 break;
1907
1908 case 3:
1909 prepare_cede (aTHX_ &ta);
1910 break;
1911
1912 case 4:
1913 if (!prepare_cede_notself (aTHX_ &ta))
1914 goto skip;
1915
1916 break;
1917 }
1918
1919 TRANSFER (ta, 0);
1920 SPAGAIN;
1921
1922skip:
1923 PUTBACK;
1924 SSL_TAIL;
1925 SPAGAIN;
1926 RETURN;
1927}
1928
1547MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 1929MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1548 1930
1549PROTOTYPES: DISABLE 1931PROTOTYPES: DISABLE
1550
1551BOOT:
1552{
1553#ifdef USE_ITHREADS
1554 MUTEX_INIT (&coro_mutex);
1555#endif
1556 BOOT_PAGESIZE;
1557
1558 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1559 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1560
1561 orig_sigelem_get = PL_vtbl_sigelem.svt_get;
1562 PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1563 orig_sigelem_set = PL_vtbl_sigelem.svt_set;
1564 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1565
1566 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1567 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1568 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1569
1570 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1571
1572 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1573 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1574 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1575 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1576
1577 main_mainstack = PL_mainstack;
1578 main_top_env = PL_top_env;
1579
1580 while (main_top_env->je_prev)
1581 main_top_env = main_top_env->je_prev;
1582
1583 coroapi.ver = CORO_API_VERSION;
1584 coroapi.rev = CORO_API_REVISION;
1585 coroapi.transfer = api_transfer;
1586
1587 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1588}
1589
1590SV *
1591new (char *klass, ...)
1592 CODE:
1593{
1594 struct coro *coro;
1595 MAGIC *mg;
1596 HV *hv;
1597 int i;
1598
1599 Newz (0, coro, 1, struct coro);
1600 coro->args = newAV ();
1601 coro->flags = CF_NEW;
1602
1603 if (coro_first) coro_first->prev = coro;
1604 coro->next = coro_first;
1605 coro_first = coro;
1606
1607 coro->hv = hv = newHV ();
1608 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1609 mg->mg_flags |= MGf_DUP;
1610 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1611
1612 av_extend (coro->args, items - 1);
1613 for (i = 1; i < items; i++)
1614 av_push (coro->args, newSVsv (ST (i)));
1615}
1616 OUTPUT:
1617 RETVAL
1618 1932
1619# these not obviously related functions are all rolled into the same xs 1933# these not obviously related functions are all rolled into the same xs
1620# function to increase chances that they all will call transfer with the same 1934# function to increase chances that they all will call transfer with the same
1621# stack offset 1935# stack offset
1622void 1936void
… …
1626 Coro::schedule = 2 1940 Coro::schedule = 2
1627 Coro::cede = 3 1941 Coro::cede = 3
1628 Coro::cede_notself = 4 1942 Coro::cede_notself = 4
1629 CODE: 1943 CODE:
1630{ 1944{
1631 struct transfer_args ta; 1945 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1632 1946
1633 PUTBACK; 1947 assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));
1634 switch (ix) 1948 ssl_cv = cv;
1949
1950 /* we patch the op, and then re-run the whole call */
1951 /* we have to put some dummy argument on the stack for this to work */
1952 ssl_restore.op_next = (OP *)&ssl_restore;
1953 ssl_restore.op_type = OP_NULL;
1954 ssl_restore.op_ppaddr = pp_restore;
1955 ssl_restore.op_first = PL_op;
1956
1957 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1958 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1959
1960 PL_op->op_ppaddr = pp_set_stacklevel;
1961 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1962
1963 PL_op = (OP *)&ssl_restore;
1964}
1965
1966BOOT:
1967{
1968#ifdef USE_ITHREADS
1969 MUTEX_INIT (&coro_lock);
1970# if CORO_PTHREAD
1971 coro_thx = PERL_GET_CONTEXT;
1972# endif
1973#endif
1974 BOOT_PAGESIZE;
1975
1976 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1977 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1978
1979 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1980 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1981 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1982
1983 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1984 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1985 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1986
1987 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1988
1989 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1990 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1991 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1992 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1993
1994 main_mainstack = PL_mainstack;
1995 main_top_env = PL_top_env;
1996
1997 while (main_top_env->je_prev)
1998 main_top_env = main_top_env->je_prev;
1999
2000 coroapi.ver = CORO_API_VERSION;
2001 coroapi.rev = CORO_API_REVISION;
2002 coroapi.transfer = api_transfer;
2003
1635 { 2004 {
1636 case 0: 2005 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1637 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1638 ta.next = 0;
1639 break;
1640 2006
1641 case 1: 2007 if (!svp) croak ("Time::HiRes is required");
1642 if (items != 2) 2008 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1643 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1644 2009
1645 prepare_transfer (aTHX_ &ta, ST (0), ST (1)); 2010 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1646 break;
1647
1648 case 2:
1649 prepare_schedule (aTHX_ &ta);
1650 break;
1651
1652 case 3:
1653 prepare_cede (aTHX_ &ta);
1654 break;
1655
1656 case 4:
1657 if (!prepare_cede_notself (aTHX_ &ta))
1658 XSRETURN_EMPTY;
1659
1660 break;
1661 } 2011 }
1662 SPAGAIN;
1663 2012
1664 BARRIER; 2013 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1665 PUTBACK;
1666 TRANSFER (ta);
1667 SPAGAIN; /* might be the sp of a different coroutine now */
1668 /* be extra careful not to ever do anything after TRANSFER */
1669} 2014}
2015
2016SV *
2017new (char *klass, ...)
2018 CODE:
2019{
2020 struct coro *coro;
2021 MAGIC *mg;
2022 HV *hv;
2023 int i;
2024
2025 Newz (0, coro, 1, struct coro);
2026 coro->args = newAV ();
2027 coro->flags = CF_NEW;
2028
2029 if (coro_first) coro_first->prev = coro;
2030 coro->next = coro_first;
2031 coro_first = coro;
2032
2033 coro->hv = hv = newHV ();
2034 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2035 mg->mg_flags |= MGf_DUP;
2036 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2037
2038 av_extend (coro->args, items - 1);
2039 for (i = 1; i < items; i++)
2040 av_push (coro->args, newSVsv (ST (i)));
2041}
2042 OUTPUT:
2043 RETVAL
1670 2044
1671bool 2045bool
1672_destroy (SV *coro_sv) 2046_destroy (SV *coro_sv)
1673 CODE: 2047 CODE:
1674 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2048 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1675 OUTPUT: 2049 OUTPUT:
1676 RETVAL 2050 RETVAL
1677 2051
1678void 2052void
1679_exit (code) 2053_exit (int code)
1680 int code
1681 PROTOTYPE: $ 2054 PROTOTYPE: $
1682 CODE: 2055 CODE:
1683 _exit (code); 2056 _exit (code);
1684 2057
1685int 2058int
1686cctx_stacksize (int new_stacksize = 0) 2059cctx_stacksize (int new_stacksize = 0)
1687 CODE: 2060 CODE:
1688 RETVAL = coro_stacksize; 2061 RETVAL = cctx_stacksize;
1689 if (new_stacksize) 2062 if (new_stacksize)
2063 {
1690 coro_stacksize = new_stacksize; 2064 cctx_stacksize = new_stacksize;
2065 ++cctx_gen;
2066 }
2067 OUTPUT:
2068 RETVAL
2069
2070int
2071cctx_max_idle (int max_idle = 0)
2072 CODE:
2073 RETVAL = cctx_max_idle;
2074 if (max_idle > 1)
2075 cctx_max_idle = max_idle;
1691 OUTPUT: 2076 OUTPUT:
1692 RETVAL 2077 RETVAL
1693 2078
1694int 2079int
1695cctx_count () 2080cctx_count ()
… …
1719call (Coro::State coro, SV *coderef) 2104call (Coro::State coro, SV *coderef)
1720 ALIAS: 2105 ALIAS:
1721 eval = 1 2106 eval = 1
1722 CODE: 2107 CODE:
1723{ 2108{
1724 if (coro->mainstack) 2109 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1725 { 2110 {
1726 struct coro temp; 2111 struct coro temp;
1727 2112
1728 if (!(coro->flags & CF_RUNNING)) 2113 if (!(coro->flags & CF_RUNNING))
1729 { 2114 {
… …
1773 RETVAL = boolSV (coro->flags & ix); 2158 RETVAL = boolSV (coro->flags & ix);
1774 OUTPUT: 2159 OUTPUT:
1775 RETVAL 2160 RETVAL
1776 2161
1777void 2162void
2163throw (Coro::State self, SV *throw = &PL_sv_undef)
2164 PROTOTYPE: $;$
2165 CODE:
2166 SvREFCNT_dec (self->throw);
2167 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2168
2169void
1778api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2170api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1779 2171
1780SV * 2172SV *
1781has_stack (Coro::State coro) 2173has_cctx (Coro::State coro)
1782 PROTOTYPE: $ 2174 PROTOTYPE: $
1783 CODE: 2175 CODE:
1784 RETVAL = boolSV (!!coro->cctx); 2176 RETVAL = boolSV (!!coro->cctx);
1785 OUTPUT: 2177 OUTPUT:
1786 RETVAL 2178 RETVAL
… …
1791 CODE: 2183 CODE:
1792 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2184 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1793 OUTPUT: 2185 OUTPUT:
1794 RETVAL 2186 RETVAL
1795 2187
1796IV 2188UV
1797rss (Coro::State coro) 2189rss (Coro::State coro)
1798 PROTOTYPE: $ 2190 PROTOTYPE: $
1799 ALIAS: 2191 ALIAS:
1800 usecount = 1 2192 usecount = 1
1801 CODE: 2193 CODE:
… …
1805 case 1: RETVAL = coro->usecount; break; 2197 case 1: RETVAL = coro->usecount; break;
1806 } 2198 }
1807 OUTPUT: 2199 OUTPUT:
1808 RETVAL 2200 RETVAL
1809 2201
1810
1811MODULE = Coro::State PACKAGE = Coro
1812
1813BOOT:
1814{
1815 int i;
1816
1817 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1818 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1819 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1820
1821 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1822 SvREADONLY_on (coro_current);
1823
1824 coro_stash = gv_stashpv ("Coro", TRUE);
1825
1826 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1827 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1828 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1829 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1830 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1831 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1832
1833 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1834 coro_ready[i] = newAV ();
1835
1836 {
1837 SV *sv = perl_get_sv ("Coro::API", TRUE);
1838 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1839
1840 coroapi.schedule = api_schedule;
1841 coroapi.cede = api_cede;
1842 coroapi.cede_notself = api_cede_notself;
1843 coroapi.ready = api_ready;
1844 coroapi.is_ready = api_is_ready;
1845 coroapi.nready = &coro_nready;
1846 coroapi.current = coro_current;
1847
1848 GCoroAPI = &coroapi;
1849 sv_setiv (sv, (IV)&coroapi);
1850 SvREADONLY_on (sv);
1851 }
1852}
1853
1854void 2202void
1855_set_current (SV *current) 2203force_cctx ()
1856 PROTOTYPE: $
1857 CODE: 2204 CODE:
1858 SvREFCNT_dec (SvRV (coro_current)); 2205 struct coro *coro = SvSTATE (coro_current);
1859 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2206 coro->cctx->idle_sp = 0;
1860
1861int
1862prio (Coro::State coro, int newprio = 0)
1863 ALIAS:
1864 nice = 1
1865 CODE:
1866{
1867 RETVAL = coro->prio;
1868
1869 if (items > 1)
1870 {
1871 if (ix)
1872 newprio = coro->prio - newprio;
1873
1874 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1875 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1876
1877 coro->prio = newprio;
1878 }
1879}
1880 OUTPUT:
1881 RETVAL
1882
1883SV *
1884ready (SV *self)
1885 PROTOTYPE: $
1886 CODE:
1887 RETVAL = boolSV (api_ready (self));
1888 OUTPUT:
1889 RETVAL
1890
1891int
1892nready (...)
1893 PROTOTYPE:
1894 CODE:
1895 RETVAL = coro_nready;
1896 OUTPUT:
1897 RETVAL
1898
1899void
1900throw (Coro::State self, SV *throw = &PL_sv_undef)
1901 PROTOTYPE: $;$
1902 CODE:
1903 SvREFCNT_dec (self->throw);
1904 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1905 2207
1906void 2208void
1907swap_defsv (Coro::State self) 2209swap_defsv (Coro::State self)
1908 PROTOTYPE: $ 2210 PROTOTYPE: $
1909 ALIAS: 2211 ALIAS:
… …
1911 CODE: 2213 CODE:
1912 if (!self->slot) 2214 if (!self->slot)
1913 croak ("cannot swap state with coroutine that has no saved state"); 2215 croak ("cannot swap state with coroutine that has no saved state");
1914 else 2216 else
1915 { 2217 {
1916 SV **src = ix ? (SV *)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2218 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1917 SV **dst = ix ? self->slot->defav : self->slot->defsv; 2219 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1918 2220
1919 SV *tmp = *src; *src = *dst; *dst = tmp; 2221 SV *tmp = *src; *src = *dst; *dst = tmp;
1920 } 2222 }
2223
2224MODULE = Coro::State PACKAGE = Coro
2225
2226BOOT:
2227{
2228 int i;
2229
2230 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2231 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2232 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2233
2234 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2235 SvREADONLY_on (coro_current);
2236
2237 coro_stash = gv_stashpv ("Coro", TRUE);
2238
2239 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2240 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
2241 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
2242 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
2243 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
2244 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
2245
2246 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2247 coro_ready[i] = newAV ();
2248
2249 {
2250 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2251
2252 coroapi.schedule = api_schedule;
2253 coroapi.cede = api_cede;
2254 coroapi.cede_notself = api_cede_notself;
2255 coroapi.ready = api_ready;
2256 coroapi.is_ready = api_is_ready;
2257 coroapi.nready = &coro_nready;
2258 coroapi.current = coro_current;
2259
2260 GCoroAPI = &coroapi;
2261 sv_setiv (sv, (IV)&coroapi);
2262 SvREADONLY_on (sv);
2263 }
2264}
2265
2266void
2267_set_current (SV *current)
2268 PROTOTYPE: $
2269 CODE:
2270 SvREFCNT_dec (SvRV (coro_current));
2271 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2272
2273void
2274_set_readyhook (SV *hook)
2275 PROTOTYPE: $
2276 CODE:
2277 LOCK;
2278 SvREFCNT_dec (coro_readyhook);
2279 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2280 UNLOCK;
2281
2282int
2283prio (Coro::State coro, int newprio = 0)
2284 ALIAS:
2285 nice = 1
2286 CODE:
2287{
2288 RETVAL = coro->prio;
2289
2290 if (items > 1)
2291 {
2292 if (ix)
2293 newprio = coro->prio - newprio;
2294
2295 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
2296 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
2297
2298 coro->prio = newprio;
2299 }
2300}
2301 OUTPUT:
2302 RETVAL
2303
2304SV *
2305ready (SV *self)
2306 PROTOTYPE: $
2307 CODE:
2308 RETVAL = boolSV (api_ready (self));
2309 OUTPUT:
2310 RETVAL
2311
2312int
2313nready (...)
2314 PROTOTYPE:
2315 CODE:
2316 RETVAL = coro_nready;
2317 OUTPUT:
2318 RETVAL
1921 2319
1922# for async_pool speedup 2320# for async_pool speedup
1923void 2321void
1924_pool_1 (SV *cb) 2322_pool_1 (SV *cb)
1925 CODE: 2323 CODE:
… …
1931 AV *invoke_av; 2329 AV *invoke_av;
1932 int i, len; 2330 int i, len;
1933 2331
1934 if (!invoke) 2332 if (!invoke)
1935 { 2333 {
1936 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2334 SV *old = PL_diehook;
2335 PL_diehook = 0;
2336 SvREFCNT_dec (old);
1937 croak ("\3async_pool terminate\2\n"); 2337 croak ("\3async_pool terminate\2\n");
1938 } 2338 }
1939 2339
1940 SvREFCNT_dec (coro->saved_deffh); 2340 SvREFCNT_dec (coro->saved_deffh);
1941 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2341 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1942 2342
1943 hv_store (hv, "desc", sizeof ("desc") - 1, 2343 hv_store (hv, "desc", sizeof ("desc") - 1,
1944 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2344 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1945 2345
1946 invoke_av = (AV *)SvRV (invoke); 2346 invoke_av = (AV *)SvRV (invoke);
… …
1950 2350
1951 if (len > 0) 2351 if (len > 0)
1952 { 2352 {
1953 av_fill (defav, len - 1); 2353 av_fill (defav, len - 1);
1954 for (i = 0; i < len; ++i) 2354 for (i = 0; i < len; ++i)
1955 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2355 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1956 } 2356 }
1957 2357
1958 SvREFCNT_dec (invoke); 2358 SvREFCNT_dec (invoke);
1959} 2359}
1960 2360
… …
1967 sv_setsv (cb, &PL_sv_undef); 2367 sv_setsv (cb, &PL_sv_undef);
1968 2368
1969 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2369 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1970 coro->saved_deffh = 0; 2370 coro->saved_deffh = 0;
1971 2371
1972 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2372 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1973 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2373 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1974 { 2374 {
1975 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2375 SV *old = PL_diehook;
2376 PL_diehook = 0;
2377 SvREFCNT_dec (old);
1976 croak ("\3async_pool terminate\2\n"); 2378 croak ("\3async_pool terminate\2\n");
1977 } 2379 }
1978 2380
1979 av_clear (GvAV (PL_defgv)); 2381 av_clear (GvAV (PL_defgv));
1980 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2382 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
… …
1986 api_trace (coro_current, 0); 2388 api_trace (coro_current, 0);
1987 2389
1988 av_push (av_async_pool, newSVsv (coro_current)); 2390 av_push (av_async_pool, newSVsv (coro_current));
1989} 2391}
1990 2392
2393#if 0
2394
2395void
2396_generator_call (...)
2397 PROTOTYPE: @
2398 PPCODE:
2399 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2400 xxxx
2401 abort ();
2402
2403SV *
2404gensub (SV *sub, ...)
2405 PROTOTYPE: &;@
2406 CODE:
2407{
2408 struct coro *coro;
2409 MAGIC *mg;
2410 CV *xcv;
2411 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2412 int i;
2413
2414 CvGV (ncv) = CvGV (cv);
2415 CvFILE (ncv) = CvFILE (cv);
2416
2417 Newz (0, coro, 1, struct coro);
2418 coro->args = newAV ();
2419 coro->flags = CF_NEW;
2420
2421 av_extend (coro->args, items - 1);
2422 for (i = 1; i < items; i++)
2423 av_push (coro->args, newSVsv (ST (i)));
2424
2425 CvISXSUB_on (ncv);
2426 CvXSUBANY (ncv).any_ptr = (void *)coro;
2427
2428 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2429
2430 CvXSUB (ncv) = CvXSUB (xcv);
2431 CvANON_on (ncv);
2432
2433 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2434 RETVAL = newRV_noinc ((SV *)ncv);
2435}
2436 OUTPUT:
2437 RETVAL
2438
2439#endif
2440
1991 2441
1992MODULE = Coro::State PACKAGE = Coro::AIO 2442MODULE = Coro::State PACKAGE = Coro::AIO
1993 2443
1994SV * 2444void
1995_get_state () 2445_get_state (SV *self)
1996 CODE: 2446 PPCODE:
1997{ 2447{
1998 struct io_state *data; 2448 AV *defav = GvAV (PL_defgv);
1999 2449 AV *av = newAV ();
2450 int i;
2000 RETVAL = newSV (sizeof (struct io_state)); 2451 SV *data_sv = newSV (sizeof (struct io_state));
2001 data = (struct io_state *)SvPVX (RETVAL); 2452 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2002 SvCUR_set (RETVAL, sizeof (struct io_state)); 2453 SvCUR_set (data_sv, sizeof (struct io_state));
2003 SvPOK_only (RETVAL); 2454 SvPOK_only (data_sv);
2004 2455
2005 data->errorno = errno; 2456 data->errorno = errno;
2006 data->laststype = PL_laststype; 2457 data->laststype = PL_laststype;
2007 data->laststatval = PL_laststatval; 2458 data->laststatval = PL_laststatval;
2008 data->statcache = PL_statcache; 2459 data->statcache = PL_statcache;
2460
2461 av_extend (av, AvFILLp (defav) + 1 + 1);
2462
2463 for (i = 0; i <= AvFILLp (defav); ++i)
2464 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2465
2466 av_push (av, data_sv);
2467
2468 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2469
2470 api_ready (self);
2009} 2471}
2010 OUTPUT:
2011 RETVAL
2012 2472
2013void 2473void
2014_set_state (char *data_) 2474_set_state (SV *state)
2015 PROTOTYPE: $ 2475 PROTOTYPE: $
2016 CODE: 2476 PPCODE:
2017{ 2477{
2018 struct io_state *data = (void *)data_; 2478 AV *av = (AV *)SvRV (state);
2479 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2480 int i;
2019 2481
2020 errno = data->errorno; 2482 errno = data->errorno;
2021 PL_laststype = data->laststype; 2483 PL_laststype = data->laststype;
2022 PL_laststatval = data->laststatval; 2484 PL_laststatval = data->laststatval;
2023 PL_statcache = data->statcache; 2485 PL_statcache = data->statcache;
2024}
2025 2486
2487 EXTEND (SP, AvFILLp (av));
2488 for (i = 0; i < AvFILLp (av); ++i)
2489 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2490}
2491
2492
2493MODULE = Coro::State PACKAGE = Coro::AnyEvent
2494
2495BOOT:
2496 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2497
2498SV *
2499_schedule (...)
2500 PROTOTYPE: @
2501 CODE:
2502{
2503 static int incede;
2504
2505 api_cede_notself ();
2506
2507 ++incede;
2508 while (coro_nready >= incede && api_cede ())
2509 ;
2510
2511 sv_setsv (sv_activity, &PL_sv_undef);
2512 if (coro_nready >= incede)
2513 {
2514 PUSHMARK (SP);
2515 PUTBACK;
2516 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2517 SPAGAIN;
2518 }
2519
2520 --incede;
2521}
2522
2523
2524MODULE = Coro::State PACKAGE = PerlIO::cede
2525
2526BOOT:
2527 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2528

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