ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.277 by root, Sat Nov 15 18:40:55 2008 UTC vs.
Revision 1.322 by root, Sat Nov 22 05:13:34 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
100 109
101/* 5.8.7 */ 110/* 5.8.7 */
102#ifndef SvRV_set 111#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 113#endif
… …
117#endif 126#endif
118 127
119/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 129 * portable way as possible. */
121#if __GNUC__ >= 4 130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 132# define STACKLEVEL __builtin_frame_address (0)
123#else 133#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel)
125#endif 136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
… …
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 159# if CORO_PTHREAD
152static void *coro_thx; 160static void *coro_thx;
153# endif 161# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 162#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 163
177static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
178 169
179static U32 cctx_gen; 170static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 174static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
187 180
188static GV *irsgv; /* $/ */ 181static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 182static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 183static SV *rv_diehook;
191static SV *rv_warnhook; 184static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 185static HV *hv_sig; /* %SIG */
193 186
194/* async_pool helper stuff */ 187/* async_pool helper stuff */
195static SV *sv_pool_rss; 188static SV *sv_pool_rss;
196static SV *sv_pool_size; 189static SV *sv_pool_size;
190static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 191static AV *av_async_pool; /* idle pool */
192static SV *sv_Coro; /* class string */
193static CV *cv_pool_handler;
194static CV *cv_coro_state_new;
198 195
199/* Coro::AnyEvent */ 196/* Coro::AnyEvent */
200static SV *sv_activity; 197static SV *sv_activity;
201 198
202static struct coro_cctx *cctx_first; 199static struct coro_cctx *cctx_first;
… …
231 int valgrind_id; 228 int valgrind_id;
232#endif 229#endif
233 unsigned char flags; 230 unsigned char flags;
234} coro_cctx; 231} coro_cctx;
235 232
233coro_cctx *cctx_current; /* the currently running cctx */
234
235/*****************************************************************************/
236
236enum { 237enum {
237 CF_RUNNING = 0x0001, /* coroutine is running */ 238 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
… …
257/* this is a structure representing a perl-level coroutine */ 258/* this is a structure representing a perl-level coroutine */
258struct coro { 259struct coro {
259 /* the C coroutine allocated to this perl coroutine, if any */ 260 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 261 coro_cctx *cctx;
261 262
262 /* process data */ 263 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 264 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 265 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 266 perl_slots *slot; /* basically the saved sp */
266 267
268 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 269 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */ 270 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 271 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 272 HV *hv; /* the perl hash associated with this coro, if any */
273 void (*on_destroy)(pTHX_ struct coro *coro);
271 274
272 /* statistics */ 275 /* statistics */
273 int usecount; /* number of transfers to this coro */ 276 int usecount; /* number of transfers to this coro */
274 277
275 /* coro process data */ 278 /* coro process data */
276 int prio; 279 int prio;
277 SV *throw; /* exception to be thrown */ 280 SV *except; /* exception to be thrown */
281 SV *rouse_cb;
278 282
279 /* async_pool */ 283 /* async_pool */
280 SV *saved_deffh; 284 SV *saved_deffh;
285 SV *invoke_cb;
286 AV *invoke_av;
281 287
282 /* linked list */ 288 /* linked list */
283 struct coro *next, *prev; 289 struct coro *next, *prev;
284}; 290};
285 291
286typedef struct coro *Coro__State; 292typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 293typedef struct coro *Coro__State_or_hashref;
288 294
295/* the following variables are effectively part of the perl context */
296/* and get copied between struct coro and these variables */
297/* the mainr easonw e don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 298static struct CoroSLF slf_frame; /* the current slf frame */
290 299
291/** Coro ********************************************************************/ 300/** Coro ********************************************************************/
292 301
293#define PRIO_MAX 3 302#define PRIO_MAX 3
… …
299 308
300/* for Coro.pm */ 309/* for Coro.pm */
301static SV *coro_current; 310static SV *coro_current;
302static SV *coro_readyhook; 311static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 312static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
313static CV *cv_coro_run, *cv_coro_terminate;
304static struct coro *coro_first; 314static struct coro *coro_first;
305#define coro_nready coroapi.nready 315#define coro_nready coroapi.nready
306 316
307/** lowlevel stuff **********************************************************/ 317/** lowlevel stuff **********************************************************/
308 318
… …
334 get_hv (name, create); 344 get_hv (name, create);
335#endif 345#endif
336 return get_hv (name, create); 346 return get_hv (name, create);
337} 347}
338 348
349/* may croak */
350INLINE CV *
351coro_sv_2cv (pTHX_ SV *sv)
352{
353 HV *st;
354 GV *gvp;
355 return sv_2cv (sv, &st, &gvp, 0);
356}
357
339static AV * 358static AV *
340coro_clone_padlist (pTHX_ CV *cv) 359coro_derive_padlist (pTHX_ CV *cv)
341{ 360{
342 AV *padlist = CvPADLIST (cv); 361 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 362 AV *newpadlist, *newpad;
344 363
345 newpadlist = newAV (); 364 newpadlist = newAV ();
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 414 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 415
397 return 0; 416 return 0;
398} 417}
399 418
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 419#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 420#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 421
403static MGVTBL coro_cv_vtbl = { 422static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 423 0, 0, 0, 0,
405 coro_cv_free 424 coro_cv_free
406}; 425};
407 426
427#define CORO_MAGIC_NN(sv, type) \
428 (expect_true (SvMAGIC (sv)->mg_type == type) \
429 ? SvMAGIC (sv) \
430 : mg_find (sv, type))
431
408#define CORO_MAGIC(sv, type) \ 432#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 433 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 434 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 435 : 0)
414 436
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 437#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 438#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417 439
418INLINE struct coro * 440INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 441SvSTATE_ (pTHX_ SV *coro)
420{ 442{
421 HV *stash; 443 HV *stash;
… …
438 mg = CORO_MAGIC_state (coro); 460 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 461 return (struct coro *)mg->mg_ptr;
440} 462}
441 463
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 464#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
465
466/* faster than SvSTATE, but expects a coroutine hv */
467#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
468#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 469
444/* the next two functions merely cache the padlists */ 470/* the next two functions merely cache the padlists */
445static void 471static void
446get_padlist (pTHX_ CV *cv) 472get_padlist (pTHX_ CV *cv)
447{ 473{
… …
453 else 479 else
454 { 480 {
455#if CORO_PREFER_PERL_FUNCTIONS 481#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 482 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 483 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 484 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 485 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 486 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 487 SvREFCNT_dec (cp);
462#else 488#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 489 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 490#endif
465 } 491 }
466} 492}
467 493
468static void 494static void
… …
515 } 541 }
516 542
517 PUTBACK; 543 PUTBACK;
518 } 544 }
519 545
520 slf_frame = c->slf_frame; 546 slf_frame = c->slf_frame;
547 CORO_THROW = c->except;
521} 548}
522 549
523static void 550static void
524save_perl (pTHX_ Coro__State c) 551save_perl (pTHX_ Coro__State c)
525{ 552{
553 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 554 c->slf_frame = slf_frame;
527 555
528 { 556 {
529 dSP; 557 dSP;
530 I32 cxix = cxstack_ix; 558 I32 cxix = cxstack_ix;
… …
605 * of perl.c:init_stacks, except that it uses less memory 633 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 634 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 635 * not usually need a lot of stackspace.
608 */ 636 */
609#if CORO_PREFER_PERL_FUNCTIONS 637#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 638# define coro_init_stacks(thx) init_stacks ()
611#else 639#else
612static void 640static void
613coro_init_stacks (pTHX) 641coro_init_stacks (pTHX)
614{ 642{
615 PL_curstackinfo = new_stackinfo(32, 8); 643 PL_curstackinfo = new_stackinfo(32, 8);
… …
678#if !PERL_VERSION_ATLEAST (5,10,0) 706#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 707 Safefree (PL_retstack);
680#endif 708#endif
681} 709}
682 710
711#define CORO_RSS \
712 rss += sizeof (SYM (curstackinfo)); \
713 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
714 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
715 rss += SYM (tmps_max) * sizeof (SV *); \
716 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
717 rss += SYM (scopestack_max) * sizeof (I32); \
718 rss += SYM (savestack_max) * sizeof (ANY);
719
683static size_t 720static size_t
684coro_rss (pTHX_ struct coro *coro) 721coro_rss (pTHX_ struct coro *coro)
685{ 722{
686 size_t rss = sizeof (*coro); 723 size_t rss = sizeof (*coro);
687 724
688 if (coro->mainstack) 725 if (coro->mainstack)
689 { 726 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 727 if (coro->flags & CF_RUNNING)
694 { 728 {
695 slot = &tmp_slot; 729 #define SYM(sym) PL_ ## sym
696 730 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 731 #undef SYM
700 } 732 }
701 else 733 else
702 slot = coro->slot;
703
704 if (slot)
705 { 734 {
706 rss += sizeof (slot->curstackinfo); 735 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 736 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 737 #undef SYM
709 rss += slot->tmps_max * sizeof (SV *);
710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
711 rss += slot->scopestack_max * sizeof (I32);
712 rss += slot->savestack_max * sizeof (ANY);
713
714#if !PERL_VERSION_ATLEAST (5,10,0)
715 rss += slot->retstack_max * sizeof (OP *);
716#endif
717 } 738 }
718 } 739 }
719 740
720 return rss; 741 return rss;
721} 742}
… …
823slf_check_nop (pTHX_ struct CoroSLF *frame) 844slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 845{
825 return 0; 846 return 0;
826} 847}
827 848
828static void 849static int
850slf_check_repeat (pTHX_ struct CoroSLF *frame)
851{
852 return 1;
853}
854
855static UNOP coro_setup_op;
856
857static void NOINLINE /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 858coro_setup (pTHX_ struct coro *coro)
830{ 859{
831 /* 860 /*
832 * emulate part of the perl startup here. 861 * emulate part of the perl startup here.
833 */ 862 */
… …
860 { 889 {
861 dSP; 890 dSP;
862 UNOP myop; 891 UNOP myop;
863 892
864 Zero (&myop, 1, UNOP); 893 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 894 myop.op_next = Nullop;
895 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 896 myop.op_flags = OPf_WANT_VOID;
867 897
868 PUSHMARK (SP); 898 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 899 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 900 PUTBACK;
871 PL_op = (OP *)&myop; 901 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 902 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 903 }
875 904
876 /* this newly created coroutine might be run on an existing cctx which most 905 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 906 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 907 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 908 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 909 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
910
911 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
912 coro_setup_op.op_next = PL_op;
913 coro_setup_op.op_type = OP_ENTERSUB;
914 coro_setup_op.op_ppaddr = pp_slf;
915 /* no flags etc. required, as an init function won't be called */
916
917 PL_op = (OP *)&coro_setup_op;
918
919 /* copy throw, in case it was set before coro_setup */
920 CORO_THROW = coro->except;
881} 921}
882 922
883static void 923static void
884coro_destruct (pTHX_ struct coro *coro) 924coro_destruct (pTHX_ struct coro *coro)
885{ 925{
… …
909 949
910 SvREFCNT_dec (PL_diehook); 950 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook); 951 SvREFCNT_dec (PL_warnhook);
912 952
913 SvREFCNT_dec (coro->saved_deffh); 953 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 954 SvREFCNT_dec (coro->rouse_cb);
955 SvREFCNT_dec (coro->invoke_cb);
956 SvREFCNT_dec (coro->invoke_av);
915 957
916 coro_destruct_stacks (aTHX); 958 coro_destruct_stacks (aTHX);
917} 959}
918 960
919INLINE void 961INLINE void
… …
929static int 971static int
930runops_trace (pTHX) 972runops_trace (pTHX)
931{ 973{
932 COP *oldcop = 0; 974 COP *oldcop = 0;
933 int oldcxix = -2; 975 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 976 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx; 977 coro_cctx *cctx = coro->cctx;
936 978
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 979 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 980 {
939 PERL_ASYNC_CHECK (); 981 PERL_ASYNC_CHECK ();
… …
991 { 1033 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1034 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1035
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1036 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1037 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1038 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1039 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1040 SV *fullname = sv_2mortal (newSV (0));
1000 1041
1001 if (isGV (gv)) 1042 if (isGV (gv))
… …
1006 SAVETMPS; 1047 SAVETMPS;
1007 EXTEND (SP, 3); 1048 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1049 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1050 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1051 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1052 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK; 1053 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1054 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1014 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1055 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN; 1056 SPAGAIN;
1016 FREETMPS; 1057 FREETMPS;
… …
1048 1089
1049 TAINT_NOT; 1090 TAINT_NOT;
1050 return 0; 1091 return 0;
1051} 1092}
1052 1093
1094static struct CoroSLF cctx_ssl_frame;
1095
1053static void 1096static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1097slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1098{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1099 ta->prev = 0;
1058} 1100}
1059 1101
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1102static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1103slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */ 1104{
1063/* also initialises PL_top_env */ 1105 *frame = cctx_ssl_frame;
1106
1107 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1108}
1109
1110/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1064static void NOINLINE 1111static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx) 1112cctx_prepare (pTHX)
1066{ 1113{
1067 dSP;
1068 UNOP myop;
1069
1070 PL_top_env = &PL_start_env; 1114 PL_top_env = &PL_start_env;
1071 1115
1072 if (cctx->flags & CC_TRACE) 1116 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1117 PL_runops = runops_trace;
1074 1118
1075 Zero (&myop, 1, UNOP); 1119 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1120 * that can lead to creation of a new cctx */
1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1121 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1122 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1078 1123
1079 PUSHMARK (SP); 1124 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1125 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1126
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1127 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1128 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1129}
1088 1130
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1131/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1132INLINE void
1091transfer_tail (pTHX) 1133transfer_tail (pTHX)
1092{ 1134{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX); 1135 free_coro_mortal (aTHX);
1098 UNLOCK;
1099
1100 if (expect_false (next->throw))
1101 {
1102 SV *exception = sv_2mortal (next->throw);
1103
1104 next->throw = 0;
1105 sv_setsv (ERRSV, exception);
1106 croak (0);
1107 }
1108} 1136}
1109 1137
1110/* 1138/*
1111 * this is a _very_ stripped down perl interpreter ;) 1139 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1140 */
… …
1124 /* normally we would need to skip the entersub here */ 1152 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1153 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1154 /* PL_nop = PL_nop->op_next */
1127 1155
1128 /* inject a fake subroutine call to cctx_init */ 1156 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1157 cctx_prepare (aTHX);
1130 1158
1131 /* cctx_run is the alternative tail of transfer() */ 1159 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1160 transfer_tail (aTHX);
1134 1161
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1162 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1163 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1164 perl_run (PL_curinterp);
1165 /*
1166 * Unfortunately, there is no way to get at the return values of the
1167 * coro body here, as perl_run destroys these
1168 */
1138 1169
1139 /* 1170 /*
1140 * If perl-run returns we assume exit() was being called or the coro 1171 * If perl-run returns we assume exit() was being called or the coro
1141 * fell off the end, which seems to be the only valid (non-bug) 1172 * fell off the end, which seems to be the only valid (non-bug)
1142 * reason for perl_run to return. We try to exit by jumping to the 1173 * reason for perl_run to return. We try to exit by jumping to the
… …
1226cctx_destroy (coro_cctx *cctx) 1257cctx_destroy (coro_cctx *cctx)
1227{ 1258{
1228 if (!cctx) 1259 if (!cctx)
1229 return; 1260 return;
1230 1261
1262 assert (cctx != cctx_current);//D temporary
1263
1231 --cctx_count; 1264 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1265 coro_destroy (&cctx->cctx);
1233 1266
1234 /* coro_transfer creates new, empty cctx's */ 1267 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr) 1268 if (cctx->sptr)
… …
1293/** coroutine switching *****************************************************/ 1326/** coroutine switching *****************************************************/
1294 1327
1295static void 1328static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1329transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1330{
1331 /* TODO: throwing up here is considered harmful */
1332
1298 if (expect_true (prev != next)) 1333 if (expect_true (prev != next))
1299 { 1334 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1335 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1336 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1302 1337
… …
1312#endif 1347#endif
1313 } 1348 }
1314} 1349}
1315 1350
1316/* always use the TRANSFER macro */ 1351/* always use the TRANSFER macro */
1317static void NOINLINE 1352static void NOINLINE /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1353transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1354{
1320 dSTACKLEVEL; 1355 dSTACKLEVEL;
1321 1356
1322 /* sometimes transfer is only called to set idle_sp */ 1357 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1358 if (expect_false (!prev))
1324 { 1359 {
1325 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1360 cctx_current->idle_sp = STACKLEVEL;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1361 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1362 }
1328 else if (expect_true (prev != next)) 1363 else if (expect_true (prev != next))
1329 { 1364 {
1330 coro_cctx *prev__cctx; 1365 coro_cctx *cctx_prev;
1331 1366
1332 if (expect_false (prev->flags & CF_NEW)) 1367 if (expect_false (prev->flags & CF_NEW))
1333 { 1368 {
1334 /* create a new empty/source context */ 1369 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1370 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1371 prev->flags |= CF_RUNNING;
1338 } 1372 }
1339 1373
1340 prev->flags &= ~CF_RUNNING; 1374 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1375 next->flags |= CF_RUNNING;
1342
1343 LOCK;
1344 1376
1345 /* first get rid of the old state */ 1377 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1378 save_perl (aTHX_ prev);
1347 1379
1348 if (expect_false (next->flags & CF_NEW)) 1380 if (expect_false (next->flags & CF_NEW))
… …
1353 coro_setup (aTHX_ next); 1385 coro_setup (aTHX_ next);
1354 } 1386 }
1355 else 1387 else
1356 load_perl (aTHX_ next); 1388 load_perl (aTHX_ next);
1357 1389
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */ 1390 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1391 if (expect_true (
1362 prev__cctx->idle_sp == (void *)stacklevel 1392 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1393 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1394 && !force_cctx
1365 )) 1395 ))
1366 { 1396 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1397 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1368 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1398 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1369
1370 prev->cctx = 0;
1371 1399
1372 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1400 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1373 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1401 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1402 if (expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1403 if (!next->cctx)
1376 next->cctx = cctx_get (aTHX); 1404 next->cctx = cctx_get (aTHX);
1377 1405
1378 cctx_put (prev__cctx); 1406 cctx_put (cctx_current);
1407 assert (!prev->cctx);//D temporary
1379 } 1408 }
1409 else
1410 prev->cctx = cctx_current;
1380 1411
1381 ++next->usecount; 1412 ++next->usecount;
1382 1413
1383 if (expect_true (!next->cctx)) 1414 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1415 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1416
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1417 next->cctx = 0;
1387 transfer_next = next;
1388 1418
1389 if (expect_false (prev__cctx != next->cctx)) 1419 if (expect_false (cctx_prev != cctx_current))
1390 { 1420 {
1391 prev__cctx->top_env = PL_top_env; 1421 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1422 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1423 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1424 }
1395 1425
1396 transfer_tail (aTHX); 1426 transfer_tail (aTHX);
1397 } 1427 }
1398} 1428}
… …
1405static int 1435static int
1406coro_state_destroy (pTHX_ struct coro *coro) 1436coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1437{
1408 if (coro->flags & CF_DESTROYED) 1438 if (coro->flags & CF_DESTROYED)
1409 return 0; 1439 return 0;
1440
1441 if (coro->on_destroy)
1442 coro->on_destroy (aTHX_ coro);
1410 1443
1411 coro->flags |= CF_DESTROYED; 1444 coro->flags |= CF_DESTROYED;
1412 1445
1413 if (coro->flags & CF_READY) 1446 if (coro->flags & CF_READY)
1414 { 1447 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1448 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1449 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1450 --coro_nready;
1419 UNLOCK;
1420 } 1451 }
1421 else 1452 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1453 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1423 1454
1424 if (coro->mainstack && coro->mainstack != main_mainstack) 1455 if (coro->mainstack && coro->mainstack != main_mainstack)
… …
1436 1467
1437 coro->slot = 0; 1468 coro->slot = 0;
1438 } 1469 }
1439 1470
1440 cctx_destroy (coro->cctx); 1471 cctx_destroy (coro->cctx);
1472 SvREFCNT_dec (coro->startcv);
1441 SvREFCNT_dec (coro->args); 1473 SvREFCNT_dec (coro->args);
1474 SvREFCNT_dec (CORO_THROW);
1442 1475
1443 if (coro->next) coro->next->prev = coro->prev; 1476 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1477 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1478 if (coro == coro_first) coro_first = coro->next;
1446 1479
… …
1500 1533
1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1534 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1502 TRANSFER (ta, 1); 1535 TRANSFER (ta, 1);
1503} 1536}
1504 1537
1538/*****************************************************************************/
1539/* gensub: simple closure generation utility */
1540
1541#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1542
1543/* create a closure from XS, returns a code reference */
1544/* the arg can be accessed via GENSUB_ARG from the callback */
1545/* the callback must use dXSARGS/XSRETURN */
1546static SV *
1547gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1548{
1549 CV *cv = (CV *)newSV (0);
1550
1551 sv_upgrade ((SV *)cv, SVt_PVCV);
1552
1553 CvANON_on (cv);
1554 CvISXSUB_on (cv);
1555 CvXSUB (cv) = xsub;
1556 GENSUB_ARG = arg;
1557
1558 return newRV_noinc ((SV *)cv);
1559}
1560
1505/** Coro ********************************************************************/ 1561/** Coro ********************************************************************/
1506 1562
1507static void 1563INLINE void
1508coro_enq (pTHX_ SV *coro_sv) 1564coro_enq (pTHX_ struct coro *coro)
1509{ 1565{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1566 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1511} 1567}
1512 1568
1513static SV * 1569INLINE SV *
1514coro_deq (pTHX) 1570coro_deq (pTHX)
1515{ 1571{
1516 int prio; 1572 int prio;
1517 1573
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1574 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1537 if (coro->flags & CF_READY) 1593 if (coro->flags & CF_READY)
1538 return 0; 1594 return 0;
1539 1595
1540 coro->flags |= CF_READY; 1596 coro->flags |= CF_READY;
1541 1597
1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1598 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1599 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546 1600
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1601 coro_enq (aTHX_ coro);
1548 ++coro_nready; 1602 ++coro_nready;
1549 1603
1550 UNLOCK;
1551
1552 if (sv_hook) 1604 if (sv_hook)
1553 { 1605 {
1554 dSP; 1606 dSP;
1555 1607
1556 ENTER; 1608 ENTER;
1557 SAVETMPS; 1609 SAVETMPS;
1558 1610
1559 PUSHMARK (SP); 1611 PUSHMARK (SP);
1560 PUTBACK; 1612 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD); 1613 call_sv (sv_hook, G_VOID | G_DISCARD);
1562 SPAGAIN;
1563 1614
1564 FREETMPS; 1615 FREETMPS;
1565 LEAVE; 1616 LEAVE;
1566 } 1617 }
1567 1618
… …
1575api_is_ready (pTHX_ SV *coro_sv) 1626api_is_ready (pTHX_ SV *coro_sv)
1576{ 1627{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1628 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1629}
1579 1630
1631/* expects to own a reference to next->hv */
1580INLINE void 1632INLINE void
1633prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1634{
1635 SV *prev_sv = SvRV (coro_current);
1636
1637 ta->prev = SvSTATE_hv (prev_sv);
1638 ta->next = next;
1639
1640 TRANSFER_CHECK (*ta);
1641
1642 SvRV_set (coro_current, (SV *)next->hv);
1643
1644 free_coro_mortal (aTHX);
1645 coro_mortal = prev_sv;
1646}
1647
1648static void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1649prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1582{ 1650{
1583 SV *prev_sv, *next_sv;
1584
1585 for (;;) 1651 for (;;)
1586 { 1652 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX); 1653 SV *next_sv = coro_deq (aTHX);
1589 1654
1590 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv)) 1655 if (expect_true (next_sv))
1592 { 1656 {
1657 struct coro *next = SvSTATE_hv (next_sv);
1658
1659 /* cannot transfer to destroyed coros, skip and look for next */
1660 if (expect_false (next->flags & CF_DESTROYED))
1661 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1662 else
1663 {
1664 next->flags &= ~CF_READY;
1665 --coro_nready;
1666
1667 prepare_schedule_to (aTHX_ ta, next);
1668 break;
1669 }
1670 }
1671 else
1672 {
1673 /* nothing to schedule: call the idle handler */
1593 dSP; 1674 dSP;
1594 UNLOCK;
1595 1675
1596 ENTER; 1676 ENTER;
1597 SAVETMPS; 1677 SAVETMPS;
1598 1678
1599 PUSHMARK (SP); 1679 PUSHMARK (SP);
1600 PUTBACK; 1680 PUTBACK;
1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1681 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1602 SPAGAIN;
1603 1682
1604 FREETMPS; 1683 FREETMPS;
1605 LEAVE; 1684 LEAVE;
1606 continue;
1607 } 1685 }
1608
1609 ta->next = SvSTATE (next_sv);
1610
1611 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */
1617 continue;
1618 }
1619
1620 --coro_nready;
1621 UNLOCK;
1622 break;
1623 } 1686 }
1624
1625 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current);
1627 ta->prev = SvSTATE (prev_sv);
1628 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv);
1632
1633 LOCK;
1634 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv;
1636 UNLOCK;
1637} 1687}
1638 1688
1639INLINE void 1689INLINE void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1690prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1691{
… …
1662{ 1712{
1663 struct coro_transfer_args ta; 1713 struct coro_transfer_args ta;
1664 1714
1665 prepare_schedule (aTHX_ &ta); 1715 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1716 TRANSFER (ta, 1);
1717}
1718
1719static void
1720api_schedule_to (pTHX_ SV *coro_sv)
1721{
1722 struct coro_transfer_args ta;
1723 struct coro *next = SvSTATE (coro_sv);
1724
1725 SvREFCNT_inc_NN (coro_sv);
1726 prepare_schedule_to (aTHX_ &ta, next);
1667} 1727}
1668 1728
1669static int 1729static int
1670api_cede (pTHX) 1730api_cede (pTHX)
1671{ 1731{
… …
1720 else 1780 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 1781 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 1782 }
1723} 1783}
1724 1784
1725#if 0 1785static void
1786coro_call_on_destroy (pTHX_ struct coro *coro)
1787{
1788 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1789 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1790
1791 if (on_destroyp)
1792 {
1793 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1794
1795 while (AvFILLp (on_destroy) >= 0)
1796 {
1797 dSP; /* don't disturb outer sp */
1798 SV *cb = av_pop (on_destroy);
1799
1800 PUSHMARK (SP);
1801
1802 if (statusp)
1803 {
1804 int i;
1805 AV *status = (AV *)SvRV (*statusp);
1806 EXTEND (SP, AvFILLp (status) + 1);
1807
1808 for (i = 0; i <= AvFILLp (status); ++i)
1809 PUSHs (AvARRAY (status)[i]);
1810 }
1811
1812 PUTBACK;
1813 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1814 }
1815 }
1816}
1817
1818static void
1819slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1820{
1821 int i;
1822 HV *hv = (HV *)SvRV (coro_current);
1823 AV *av = newAV ();
1824
1825 av_extend (av, items - 1);
1826 for (i = 0; i < items; ++i)
1827 av_push (av, SvREFCNT_inc_NN (arg [i]));
1828
1829 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1830
1831 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1832 api_ready (aTHX_ sv_manager);
1833
1834 frame->prepare = prepare_schedule;
1835 frame->check = slf_check_repeat;
1836}
1837
1838/*****************************************************************************/
1839/* async pool handler */
1840
1726static int 1841static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1842slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1728{ 1843{
1729 AV *padlist; 1844 HV *hv = (HV *)SvRV (coro_current);
1730 AV *av = (AV *)mg->mg_obj; 1845 struct coro *coro = (struct coro *)frame->data;
1731 1846
1732 abort (); 1847 if (!coro->invoke_cb)
1848 return 1; /* loop till we have invoke */
1849 else
1850 {
1851 hv_store (hv, "desc", sizeof ("desc") - 1,
1852 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1853
1854 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1855
1856 {
1857 dSP;
1858 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1859 PUTBACK;
1860 }
1861
1862 SvREFCNT_dec (GvAV (PL_defgv));
1863 GvAV (PL_defgv) = coro->invoke_av;
1864 coro->invoke_av = 0;
1865
1866 return 0;
1867 }
1868}
1869
1870static void
1871slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1872{
1873 HV *hv = (HV *)SvRV (coro_current);
1874 struct coro *coro = SvSTATE_hv ((SV *)hv);
1875
1876 if (expect_true (coro->saved_deffh))
1877 {
1878 /* subsequent iteration */
1879 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1880 coro->saved_deffh = 0;
1881
1882 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1883 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1884 {
1885 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1886 coro->invoke_av = newAV ();
1887
1888 frame->prepare = prepare_nop;
1889 }
1890 else
1891 {
1892 av_clear (GvAV (PL_defgv));
1893 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1894
1895 coro->prio = 0;
1896
1897 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1898 api_trace (aTHX_ coro_current, 0);
1899
1900 frame->prepare = prepare_schedule;
1901 av_push (av_async_pool, SvREFCNT_inc (hv));
1902 }
1903 }
1904 else
1905 {
1906 /* first iteration, simply fall through */
1907 frame->prepare = prepare_nop;
1908 }
1909
1910 frame->check = slf_check_pool_handler;
1911 frame->data = (void *)coro;
1912}
1913
1914/*****************************************************************************/
1915/* rouse callback */
1916
1917#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1918
1919static void
1920coro_rouse_callback (pTHX_ CV *cv)
1921{
1922 dXSARGS;
1923 SV *data = (SV *)GENSUB_ARG;
1924
1925 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1926 {
1927 /* first call, set args */
1928 AV *av = newAV ();
1929 SV *coro = SvRV (data);
1930
1931 SvRV_set (data, (SV *)av);
1932 api_ready (aTHX_ coro);
1933 SvREFCNT_dec (coro);
1934
1935 /* better take a full copy of the arguments */
1936 while (items--)
1937 av_store (av, items, newSVsv (ST (items)));
1938 }
1939
1940 XSRETURN_EMPTY;
1941}
1942
1943static int
1944slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1945{
1946 SV *data = (SV *)frame->data;
1947
1948 if (CORO_THROW)
1949 return 0;
1950
1951 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1952 return 1;
1953
1954 /* now push all results on the stack */
1955 {
1956 dSP;
1957 AV *av = (AV *)SvRV (data);
1958 int i;
1959
1960 EXTEND (SP, AvFILLp (av) + 1);
1961 for (i = 0; i <= AvFILLp (av); ++i)
1962 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1963
1964 /* we have stolen the elements, so ste length to zero and free */
1965 AvFILLp (av) = -1;
1966 av_undef (av);
1967
1968 PUTBACK;
1969 }
1733 1970
1734 return 0; 1971 return 0;
1735} 1972}
1736 1973
1737static MGVTBL coro_gensub_vtbl = { 1974static void
1738 0, 0, 0, 0, 1975slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 1976{
1740}; 1977 SV *cb;
1741#endif 1978
1979 if (items)
1980 cb = arg [0];
1981 else
1982 {
1983 struct coro *coro = SvSTATE_current;
1984
1985 if (!coro->rouse_cb)
1986 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1987
1988 cb = sv_2mortal (coro->rouse_cb);
1989 coro->rouse_cb = 0;
1990 }
1991
1992 if (!SvROK (cb)
1993 || SvTYPE (SvRV (cb)) != SVt_PVCV
1994 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1995 croak ("Coro::rouse_wait called with illegal callback argument,");
1996
1997 {
1998 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1999 SV *data = (SV *)GENSUB_ARG;
2000
2001 frame->data = (void *)data;
2002 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2003 frame->check = slf_check_rouse_wait;
2004 }
2005}
2006
2007static SV *
2008coro_new_rouse_cb (pTHX)
2009{
2010 HV *hv = (HV *)SvRV (coro_current);
2011 struct coro *coro = SvSTATE_hv (hv);
2012 SV *data = newRV_inc ((SV *)hv);
2013 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2014
2015 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2016 SvREFCNT_dec (data); /* magicext increases the refcount */
2017
2018 SvREFCNT_dec (coro->rouse_cb);
2019 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2020
2021 return cb;
2022}
2023
2024/*****************************************************************************/
2025/* schedule-like-function opcode (SLF) */
2026
2027static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2028static const CV *slf_cv;
2029static SV **slf_argv;
2030static int slf_argc, slf_arga; /* count, allocated */
2031static I32 slf_ax; /* top of stack, for restore */
2032
2033/* this restores the stack in the case we patched the entersub, to */
2034/* recreate the stack frame as perl will on following calls */
2035/* since entersub cleared the stack */
2036static OP *
2037pp_restore (pTHX)
2038{
2039 int i;
2040 SV **SP = PL_stack_base + slf_ax;
2041
2042 PUSHMARK (SP);
2043
2044 EXTEND (SP, slf_argc + 1);
2045
2046 for (i = 0; i < slf_argc; ++i)
2047 PUSHs (sv_2mortal (slf_argv [i]));
2048
2049 PUSHs ((SV *)CvGV (slf_cv));
2050
2051 RETURNOP (slf_restore.op_first);
2052}
2053
2054static void
2055slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2056{
2057 SV **arg = (SV **)slf_frame.data;
2058
2059 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2060}
2061
2062static void
2063slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2064{
2065 if (items != 2)
2066 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2067
2068 frame->prepare = slf_prepare_transfer;
2069 frame->check = slf_check_nop;
2070 frame->data = (void *)arg; /* let's hope it will stay valid */
2071}
2072
2073static void
2074slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2075{
2076 frame->prepare = prepare_schedule;
2077 frame->check = slf_check_nop;
2078}
2079
2080static void
2081slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2082{
2083 struct coro *next = (struct coro *)slf_frame.data;
2084
2085 SvREFCNT_inc_NN (next->hv);
2086 prepare_schedule_to (aTHX_ ta, next);
2087}
2088
2089static void
2090slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2091{
2092 if (!items)
2093 croak ("Coro::schedule_to expects a coroutine argument, caught");
2094
2095 frame->data = (void *)SvSTATE (arg [0]);
2096 frame->prepare = slf_prepare_schedule_to;
2097 frame->check = slf_check_nop;
2098}
2099
2100static void
2101slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2102{
2103 api_ready (aTHX_ SvRV (coro_current));
2104
2105 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2106}
2107
2108static void
2109slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2110{
2111 frame->prepare = prepare_cede;
2112 frame->check = slf_check_nop;
2113}
2114
2115static void
2116slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2117{
2118 frame->prepare = prepare_cede_notself;
2119 frame->check = slf_check_nop;
2120}
2121
2122/*
2123 * these not obviously related functions are all rolled into one
2124 * function to increase chances that they all will call transfer with the same
2125 * stack offset
2126 * SLF stands for "schedule-like-function".
2127 */
2128static OP *
2129pp_slf (pTHX)
2130{
2131 I32 checkmark; /* mark SP to see how many elements check has pushed */
2132
2133 /* set up the slf frame, unless it has already been set-up */
2134 /* the latter happens when a new coro has been started */
2135 /* or when a new cctx was attached to an existing coroutine */
2136 if (expect_true (!slf_frame.prepare))
2137 {
2138 /* first iteration */
2139 dSP;
2140 SV **arg = PL_stack_base + TOPMARK + 1;
2141 int items = SP - arg; /* args without function object */
2142 SV *gv = *sp;
2143
2144 /* do a quick consistency check on the "function" object, and if it isn't */
2145 /* for us, divert to the real entersub */
2146 if (SvTYPE (gv) != SVt_PVGV
2147 || !GvCV (gv)
2148 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2149 return PL_ppaddr[OP_ENTERSUB](aTHX);
2150
2151 if (!(PL_op->op_flags & OPf_STACKED))
2152 {
2153 /* ampersand-form of call, use @_ instead of stack */
2154 AV *av = GvAV (PL_defgv);
2155 arg = AvARRAY (av);
2156 items = AvFILLp (av) + 1;
2157 }
2158
2159 /* now call the init function, which needs to set up slf_frame */
2160 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2161 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2162
2163 /* pop args */
2164 SP = PL_stack_base + POPMARK;
2165
2166 PUTBACK;
2167 }
2168
2169 /* now that we have a slf_frame, interpret it! */
2170 /* we use a callback system not to make the code needlessly */
2171 /* complicated, but so we can run multiple perl coros from one cctx */
2172
2173 do
2174 {
2175 struct coro_transfer_args ta;
2176
2177 slf_frame.prepare (aTHX_ &ta);
2178 TRANSFER (ta, 0);
2179
2180 checkmark = PL_stack_sp - PL_stack_base;
2181 }
2182 while (slf_frame.check (aTHX_ &slf_frame));
2183
2184 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2185
2186 /* exception handling */
2187 if (expect_false (CORO_THROW))
2188 {
2189 SV *exception = sv_2mortal (CORO_THROW);
2190
2191 CORO_THROW = 0;
2192 sv_setsv (ERRSV, exception);
2193 croak (0);
2194 }
2195
2196 /* return value handling - mostly like entersub */
2197 /* make sure we put something on the stack in scalar context */
2198 if (GIMME_V == G_SCALAR)
2199 {
2200 dSP;
2201 SV **bot = PL_stack_base + checkmark;
2202
2203 if (sp == bot) /* too few, push undef */
2204 bot [1] = &PL_sv_undef;
2205 else if (sp != bot + 1) /* too many, take last one */
2206 bot [1] = *sp;
2207
2208 SP = bot + 1;
2209
2210 PUTBACK;
2211 }
2212
2213 return NORMAL;
2214}
2215
2216static void
2217api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2218{
2219 int i;
2220 SV **arg = PL_stack_base + ax;
2221 int items = PL_stack_sp - arg + 1;
2222
2223 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2224
2225 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2226 && PL_op->op_ppaddr != pp_slf)
2227 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2228
2229 CvFLAGS (cv) |= CVf_SLF;
2230 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2231 slf_cv = cv;
2232
2233 /* we patch the op, and then re-run the whole call */
2234 /* we have to put the same argument on the stack for this to work */
2235 /* and this will be done by pp_restore */
2236 slf_restore.op_next = (OP *)&slf_restore;
2237 slf_restore.op_type = OP_CUSTOM;
2238 slf_restore.op_ppaddr = pp_restore;
2239 slf_restore.op_first = PL_op;
2240
2241 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2242
2243 if (PL_op->op_flags & OPf_STACKED)
2244 {
2245 if (items > slf_arga)
2246 {
2247 slf_arga = items;
2248 free (slf_argv);
2249 slf_argv = malloc (slf_arga * sizeof (SV *));
2250 }
2251
2252 slf_argc = items;
2253
2254 for (i = 0; i < items; ++i)
2255 slf_argv [i] = SvREFCNT_inc (arg [i]);
2256 }
2257 else
2258 slf_argc = 0;
2259
2260 PL_op->op_ppaddr = pp_slf;
2261 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2262
2263 PL_op = (OP *)&slf_restore;
2264}
1742 2265
1743/*****************************************************************************/ 2266/*****************************************************************************/
1744/* PerlIO::cede */ 2267/* PerlIO::cede */
1745 2268
1746typedef struct 2269typedef struct
… …
1814 PerlIOBuf_get_cnt, 2337 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 2338 PerlIOBuf_set_ptrcnt,
1816}; 2339};
1817 2340
1818/*****************************************************************************/ 2341/*****************************************************************************/
2342/* Coro::Semaphore & Coro::Signal */
1819 2343
1820static const CV *slf_cv; /* for quick consistency check */
1821
1822static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1823static SV *slf_arg0;
1824static SV *slf_arg1;
1825static SV *slf_arg2;
1826
1827/* this restores the stack in the case we patched the entersub, to */
1828/* recreate the stack frame as perl will on following calls */
1829/* since entersub cleared the stack */
1830static OP * 2344static SV *
1831pp_restore (pTHX) 2345coro_waitarray_new (pTHX_ int count)
1832{ 2346{
1833 dSP; 2347 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2348 AV *av = newAV ();
2349 SV **ary;
1834 2350
1835 PUSHMARK (SP); 2351 /* unfortunately, building manually saves memory */
2352 Newx (ary, 2, SV *);
2353 AvALLOC (av) = ary;
2354 /*AvARRAY (av) = ary;*/
2355 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2356 AvMAX (av) = 1;
2357 AvFILLp (av) = 0;
2358 ary [0] = newSViv (count);
1836 2359
1837 EXTEND (SP, 3); 2360 return newRV_noinc ((SV *)av);
1838 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1839 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1840 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1841 PUSHs ((SV *)CvGV (slf_cv));
1842
1843 RETURNOP (slf_restore.op_first);
1844} 2361}
1845 2362
1846static void 2363/* semaphore */
1847slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1848{
1849 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1850}
1851 2364
1852static void 2365static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2366coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2367{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2368 SV *count_sv = AvARRAY (av)[0];
2369 IV count = SvIVX (count_sv);
1856 2370
1857 frame->prepare = slf_prepare_set_stacklevel; 2371 count += adjust;
1858 frame->check = slf_check_nop; 2372 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2373
1862static void 2374 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2375 while (count > 0 && AvFILLp (av) > 0)
1864{
1865 SV **arg = (SV **)slf_frame.data;
1866
1867 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1868}
1869
1870static void
1871slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1875
1876 frame->prepare = slf_prepare_transfer;
1877 frame->check = slf_check_nop;
1878 frame->data = (void *)arg; /* let's hope it will stay valid */
1879}
1880
1881static void
1882slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1883{
1884 frame->prepare = prepare_schedule;
1885 frame->check = slf_check_nop;
1886}
1887
1888static void
1889slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1890{
1891 frame->prepare = prepare_cede;
1892 frame->check = slf_check_nop;
1893}
1894
1895static void
1896slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1897{
1898 frame->prepare = prepare_cede_notself;
1899 frame->check = slf_check_nop;
1900}
1901
1902/* we hijack an hopefully unused CV flag for our purposes */
1903#define CVf_SLF 0x4000
1904
1905/*
1906 * these not obviously related functions are all rolled into one
1907 * function to increase chances that they all will call transfer with the same
1908 * stack offset
1909 * SLF stands for "schedule-like-function".
1910 */
1911static OP *
1912pp_slf (pTHX)
1913{
1914 I32 checkmark; /* mark SP to see how many elements check has pushed */
1915
1916 /* set up the slf frame, unless it has already been set-up */
1917 /* the latter happens when a new coro has been started */
1918 /* or when a new cctx was attached to an existing coroutine */
1919 if (expect_true (!slf_frame.prepare))
1920 { 2376 {
1921 /* first iteration */ 2377 SV *cb;
1922 dSP;
1923 SV **arg = PL_stack_base + TOPMARK + 1;
1924 int items = SP - arg; /* args without function object */
1925 SV *gv = *sp;
1926 2378
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2379 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2380 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2381 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2382 cb = av_shift (av);
1931 2383
1932 /* pop args */ 2384 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2385 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2386 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2387 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2388 }
1942 2389 else if (SvTYPE (cb) == SVt_PVCV)
1943 PUTBACK;
1944
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1946 }
1947
1948 /* now interpret the slf_frame */
1949 /* we use a callback system not to make the code needlessly */
1950 /* complicated, but so we can run multiple perl coros from one cctx */
1951
1952 do
1953 {
1954 struct coro_transfer_args ta;
1955
1956 slf_frame.prepare (aTHX_ &ta);
1957 TRANSFER (ta, 0);
1958
1959 checkmark = PL_stack_sp - PL_stack_base;
1960 }
1961 while (slf_frame.check (aTHX_ &slf_frame));
1962
1963 {
1964 dSP;
1965 SV **bot = PL_stack_base + checkmark;
1966 int gimme = GIMME_V;
1967
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1969
1970 /* make sure we put something on the stack in scalar context */
1971 if (gimme == G_SCALAR)
1972 { 2390 {
1973 if (sp == bot) 2391 dSP;
1974 XPUSHs (&PL_sv_undef); 2392 PUSHMARK (SP);
1975 2393 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1976 SP = bot + 1; 2394 PUTBACK;
2395 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1977 } 2396 }
1978 2397
1979 PUTBACK; 2398 SvREFCNT_dec (cb);
1980 } 2399 }
1981
1982 return NORMAL;
1983} 2400}
1984 2401
1985static void 2402static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2403coro_semaphore_on_destroy (pTHX_ struct coro *coro)
1987{ 2404{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2405 /* call $sem->adjust (0) to possibly wake up some other waiters */
1989 2406 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1991 && PL_op->op_ppaddr != pp_slf)
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1993
1994 if (items > 3)
1995 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1996
1997 CvFLAGS (cv) |= CVf_SLF;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1999 slf_cv = cv;
2000
2001 /* we patch the op, and then re-run the whole call */
2002 /* we have to put the same argument on the stack for this to work */
2003 /* and this will be done by pp_restore */
2004 slf_restore.op_next = (OP *)&slf_restore;
2005 slf_restore.op_type = OP_NULL;
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
2012
2013 PL_op->op_ppaddr = pp_slf;
2014
2015 PL_op = (OP *)&slf_restore;
2016} 2407}
2017
2018/*****************************************************************************/
2019 2408
2020static int 2409static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2410slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2022{ 2411{
2023 AV *av = (AV *)frame->data; 2412 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0]; 2413 SV *count_sv = AvARRAY (av)[0];
2025 2414
2415 /* if we are about to throw, don't actually acquire the lock, just throw */
2416 if (CORO_THROW)
2417 return 0;
2026 if (SvIVX (count_sv) > 0) 2418 else if (SvIVX (count_sv) > 0)
2027 { 2419 {
2420 SvSTATE_current->on_destroy = 0;
2421
2422 if (acquire)
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2423 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2424 else
2425 coro_semaphore_adjust (aTHX_ av, 0);
2426
2029 return 0; 2427 return 0;
2030 } 2428 }
2031 else 2429 else
2032 { 2430 {
2033 int i; 2431 int i;
… …
2042 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2440 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2043 return 1; 2441 return 1;
2044 } 2442 }
2045} 2443}
2046 2444
2047static void 2445static int
2446slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2447{
2448 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2449}
2450
2451static int
2452slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2453{
2454 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2455}
2456
2457static void
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2458slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{ 2459{
2050 AV *av = (AV *)SvRV (arg [0]); 2460 AV *av = (AV *)SvRV (arg [0]);
2051 2461
2052 if (SvIVX (AvARRAY (av)[0]) > 0) 2462 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 { 2463 {
… …
2058 { 2468 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2469 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 2470
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2471 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule; 2472 frame->prepare = prepare_schedule;
2063 }
2064 2473
2474 /* to avoid race conditions when a woken-up coro gets terminated */
2475 /* we arrange for a temporary on_destroy that calls adjust (0) */
2476 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2477 }
2478}
2479
2480static void
2481slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2482{
2483 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 2484 frame->check = slf_check_semaphore_down;
2066
2067} 2485}
2486
2487static void
2488slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2489{
2490 if (items >= 2)
2491 {
2492 /* callback form */
2493 AV *av = (AV *)SvRV (arg [0]);
2494 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2495
2496 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2497
2498 if (SvIVX (AvARRAY (av)[0]) > 0)
2499 coro_semaphore_adjust (aTHX_ av, 0);
2500
2501 frame->prepare = prepare_nop;
2502 frame->check = slf_check_nop;
2503 }
2504 else
2505 {
2506 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2507 frame->check = slf_check_semaphore_wait;
2508 }
2509}
2510
2511/* signal */
2512
2513static void
2514coro_signal_wake (pTHX_ AV *av, int count)
2515{
2516 SvIVX (AvARRAY (av)[0]) = 0;
2517
2518 /* now signal count waiters */
2519 while (count > 0 && AvFILLp (av) > 0)
2520 {
2521 SV *cb;
2522
2523 /* swap first two elements so we can shift a waiter */
2524 cb = AvARRAY (av)[0];
2525 AvARRAY (av)[0] = AvARRAY (av)[1];
2526 AvARRAY (av)[1] = cb;
2527
2528 cb = av_shift (av);
2529
2530 api_ready (aTHX_ cb);
2531 sv_setiv (cb, 0); /* signal waiter */
2532 SvREFCNT_dec (cb);
2533
2534 --count;
2535 }
2536}
2537
2538static int
2539slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2540{
2541 /* if we are about to throw, also stop waiting */
2542 return SvROK ((SV *)frame->data) && !CORO_THROW;
2543}
2544
2545static void
2546slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2547{
2548 AV *av = (AV *)SvRV (arg [0]);
2549
2550 if (SvIVX (AvARRAY (av)[0]))
2551 {
2552 SvIVX (AvARRAY (av)[0]) = 0;
2553 frame->prepare = prepare_nop;
2554 frame->check = slf_check_nop;
2555 }
2556 else
2557 {
2558 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2559
2560 av_push (av, waiter);
2561
2562 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2563 frame->prepare = prepare_schedule;
2564 frame->check = slf_check_signal_wait;
2565 }
2566}
2567
2568/*****************************************************************************/
2569/* Coro::AIO */
2570
2571#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2572
2573/* helper storage struct */
2574struct io_state
2575{
2576 int errorno;
2577 I32 laststype; /* U16 in 5.10.0 */
2578 int laststatval;
2579 Stat_t statcache;
2580};
2581
2582static void
2583coro_aio_callback (pTHX_ CV *cv)
2584{
2585 dXSARGS;
2586 AV *state = (AV *)GENSUB_ARG;
2587 SV *coro = av_pop (state);
2588 SV *data_sv = newSV (sizeof (struct io_state));
2589
2590 av_extend (state, items - 1);
2591
2592 sv_upgrade (data_sv, SVt_PV);
2593 SvCUR_set (data_sv, sizeof (struct io_state));
2594 SvPOK_only (data_sv);
2595
2596 {
2597 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2598
2599 data->errorno = errno;
2600 data->laststype = PL_laststype;
2601 data->laststatval = PL_laststatval;
2602 data->statcache = PL_statcache;
2603 }
2604
2605 /* now build the result vector out of all the parameters and the data_sv */
2606 {
2607 int i;
2608
2609 for (i = 0; i < items; ++i)
2610 av_push (state, SvREFCNT_inc_NN (ST (i)));
2611 }
2612
2613 av_push (state, data_sv);
2614
2615 api_ready (aTHX_ coro);
2616 SvREFCNT_dec (coro);
2617 SvREFCNT_dec ((AV *)state);
2618}
2619
2620static int
2621slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2622{
2623 AV *state = (AV *)frame->data;
2624
2625 /* if we are about to throw, return early */
2626 /* this does not cancel the aio request, but at least */
2627 /* it quickly returns */
2628 if (CORO_THROW)
2629 return 0;
2630
2631 /* one element that is an RV? repeat! */
2632 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2633 return 1;
2634
2635 /* restore status */
2636 {
2637 SV *data_sv = av_pop (state);
2638 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2639
2640 errno = data->errorno;
2641 PL_laststype = data->laststype;
2642 PL_laststatval = data->laststatval;
2643 PL_statcache = data->statcache;
2644
2645 SvREFCNT_dec (data_sv);
2646 }
2647
2648 /* push result values */
2649 {
2650 dSP;
2651 int i;
2652
2653 EXTEND (SP, AvFILLp (state) + 1);
2654 for (i = 0; i <= AvFILLp (state); ++i)
2655 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2656
2657 PUTBACK;
2658 }
2659
2660 return 0;
2661}
2662
2663static void
2664slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2665{
2666 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2667 SV *coro_hv = SvRV (coro_current);
2668 struct coro *coro = SvSTATE_hv (coro_hv);
2669
2670 /* put our coroutine id on the state arg */
2671 av_push (state, SvREFCNT_inc_NN (coro_hv));
2672
2673 /* first see whether we have a non-zero priority and set it as AIO prio */
2674 if (coro->prio)
2675 {
2676 dSP;
2677
2678 static SV *prio_cv;
2679 static SV *prio_sv;
2680
2681 if (expect_false (!prio_cv))
2682 {
2683 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2684 prio_sv = newSViv (0);
2685 }
2686
2687 PUSHMARK (SP);
2688 sv_setiv (prio_sv, coro->prio);
2689 XPUSHs (prio_sv);
2690
2691 PUTBACK;
2692 call_sv (prio_cv, G_VOID | G_DISCARD);
2693 }
2694
2695 /* now call the original request */
2696 {
2697 dSP;
2698 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2699 int i;
2700
2701 PUSHMARK (SP);
2702
2703 /* first push all args to the stack */
2704 EXTEND (SP, items + 1);
2705
2706 for (i = 0; i < items; ++i)
2707 PUSHs (arg [i]);
2708
2709 /* now push the callback closure */
2710 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2711
2712 /* now call the AIO function - we assume our request is uncancelable */
2713 PUTBACK;
2714 call_sv ((SV *)req, G_VOID | G_DISCARD);
2715 }
2716
2717 /* now that the requets is going, we loop toll we have a result */
2718 frame->data = (void *)state;
2719 frame->prepare = prepare_schedule;
2720 frame->check = slf_check_aio_req;
2721}
2722
2723static void
2724coro_aio_req_xs (pTHX_ CV *cv)
2725{
2726 dXSARGS;
2727
2728 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2729
2730 XSRETURN_EMPTY;
2731}
2732
2733/*****************************************************************************/
2734
2735#if CORO_CLONE
2736# include "clone.c"
2737#endif
2068 2738
2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2739MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2070 2740
2071PROTOTYPES: DISABLE 2741PROTOTYPES: DISABLE
2072 2742
2073BOOT: 2743BOOT:
2074{ 2744{
2075#ifdef USE_ITHREADS 2745#ifdef USE_ITHREADS
2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD 2746# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT; 2747 coro_thx = PERL_GET_CONTEXT;
2079# endif 2748# endif
2080#endif 2749#endif
2081 BOOT_PAGESIZE; 2750 BOOT_PAGESIZE;
2751
2752 cctx_current = cctx_new_empty ();
2082 2753
2083 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2754 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2084 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2755 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2085 2756
2086 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2757 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2101 main_mainstack = PL_mainstack; 2772 main_mainstack = PL_mainstack;
2102 main_top_env = PL_top_env; 2773 main_top_env = PL_top_env;
2103 2774
2104 while (main_top_env->je_prev) 2775 while (main_top_env->je_prev)
2105 main_top_env = main_top_env->je_prev; 2776 main_top_env = main_top_env->je_prev;
2777
2778 {
2779 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2780
2781 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2782 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2783
2784 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2785 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2786 }
2106 2787
2107 coroapi.ver = CORO_API_VERSION; 2788 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION; 2789 coroapi.rev = CORO_API_REVISION;
2109 2790
2110 coroapi.transfer = api_transfer; 2791 coroapi.transfer = api_transfer;
… …
2128 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2809 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2129} 2810}
2130 2811
2131SV * 2812SV *
2132new (char *klass, ...) 2813new (char *klass, ...)
2814 ALIAS:
2815 Coro::new = 1
2133 CODE: 2816 CODE:
2134{ 2817{
2135 struct coro *coro; 2818 struct coro *coro;
2136 MAGIC *mg; 2819 MAGIC *mg;
2137 HV *hv; 2820 HV *hv;
2821 CV *cb;
2138 int i; 2822 int i;
2823
2824 if (items > 1)
2825 {
2826 cb = coro_sv_2cv (aTHX_ ST (1));
2827
2828 if (!ix)
2829 {
2830 if (CvISXSUB (cb))
2831 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2832
2833 if (!CvROOT (cb))
2834 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2835 }
2836 }
2139 2837
2140 Newz (0, coro, 1, struct coro); 2838 Newz (0, coro, 1, struct coro);
2141 coro->args = newAV (); 2839 coro->args = newAV ();
2142 coro->flags = CF_NEW; 2840 coro->flags = CF_NEW;
2143 2841
… …
2148 coro->hv = hv = newHV (); 2846 coro->hv = hv = newHV ();
2149 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2847 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2150 mg->mg_flags |= MGf_DUP; 2848 mg->mg_flags |= MGf_DUP;
2151 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2849 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2152 2850
2851 if (items > 1)
2852 {
2153 av_extend (coro->args, items - 1); 2853 av_extend (coro->args, items - 1 + ix - 1);
2854
2855 if (ix)
2856 {
2857 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2858 cb = cv_coro_run;
2859 }
2860
2861 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2862
2154 for (i = 1; i < items; i++) 2863 for (i = 2; i < items; i++)
2155 av_push (coro->args, newSVsv (ST (i))); 2864 av_push (coro->args, newSVsv (ST (i)));
2865 }
2156} 2866}
2157 OUTPUT: 2867 OUTPUT:
2158 RETVAL 2868 RETVAL
2159
2160void
2161_set_stacklevel (...)
2162 CODE:
2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2164 2869
2165void 2870void
2166transfer (...) 2871transfer (...)
2167 PROTOTYPE: $$ 2872 PROTOTYPE: $$
2168 CODE: 2873 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2874 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2170 2875
2171bool 2876bool
2172_destroy (SV *coro_sv) 2877_destroy (SV *coro_sv)
2173 CODE: 2878 CODE:
2174 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2879 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2178void 2883void
2179_exit (int code) 2884_exit (int code)
2180 PROTOTYPE: $ 2885 PROTOTYPE: $
2181 CODE: 2886 CODE:
2182 _exit (code); 2887 _exit (code);
2888
2889SV *
2890clone (Coro::State coro)
2891 CODE:
2892{
2893#if CORO_CLONE
2894 struct coro *ncoro = coro_clone (coro);
2895 MAGIC *mg;
2896 /* TODO: too much duplication */
2897 ncoro->hv = newHV ();
2898 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2899 mg->mg_flags |= MGf_DUP;
2900 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2901#else
2902 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2903#endif
2904}
2905 OUTPUT:
2906 RETVAL
2183 2907
2184int 2908int
2185cctx_stacksize (int new_stacksize = 0) 2909cctx_stacksize (int new_stacksize = 0)
2186 PROTOTYPE: ;$ 2910 PROTOTYPE: ;$
2187 CODE: 2911 CODE:
… …
2292 3016
2293void 3017void
2294throw (Coro::State self, SV *throw = &PL_sv_undef) 3018throw (Coro::State self, SV *throw = &PL_sv_undef)
2295 PROTOTYPE: $;$ 3019 PROTOTYPE: $;$
2296 CODE: 3020 CODE:
3021{
3022 struct coro *current = SvSTATE_current;
3023 SV **throwp = self == current ? &CORO_THROW : &self->except;
2297 SvREFCNT_dec (self->throw); 3024 SvREFCNT_dec (*throwp);
2298 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3025 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3026}
2299 3027
2300void 3028void
2301api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3029api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2302 PROTOTYPE: $;$ 3030 PROTOTYPE: $;$
2303 C_ARGS: aTHX_ coro, flags 3031 C_ARGS: aTHX_ coro, flags
… …
2334 3062
2335void 3063void
2336force_cctx () 3064force_cctx ()
2337 PROTOTYPE: 3065 PROTOTYPE:
2338 CODE: 3066 CODE:
2339 struct coro *coro = SvSTATE (coro_current);
2340 coro->cctx->idle_sp = 0; 3067 SvSTATE_current->cctx->idle_sp = 0;
2341 3068
2342void 3069void
2343swap_defsv (Coro::State self) 3070swap_defsv (Coro::State self)
2344 PROTOTYPE: $ 3071 PROTOTYPE: $
2345 ALIAS: 3072 ALIAS:
… …
2353 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3080 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2354 3081
2355 SV *tmp = *src; *src = *dst; *dst = tmp; 3082 SV *tmp = *src; *src = *dst; *dst = tmp;
2356 } 3083 }
2357 3084
3085
2358MODULE = Coro::State PACKAGE = Coro 3086MODULE = Coro::State PACKAGE = Coro
2359 3087
2360BOOT: 3088BOOT:
2361{ 3089{
2362 int i; 3090 int i;
2363 3091
2364 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2365 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3092 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2366 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3093 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2367 3094 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3095 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2368 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3096 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2369 SvREADONLY_on (coro_current); 3097 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3098 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3099 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3100
3101 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3102 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3103 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3104 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2370 3105
2371 coro_stash = gv_stashpv ("Coro", TRUE); 3106 coro_stash = gv_stashpv ("Coro", TRUE);
2372 3107
2373 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3108 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2374 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3109 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2382 3117
2383 { 3118 {
2384 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3119 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2385 3120
2386 coroapi.schedule = api_schedule; 3121 coroapi.schedule = api_schedule;
3122 coroapi.schedule_to = api_schedule_to;
2387 coroapi.cede = api_cede; 3123 coroapi.cede = api_cede;
2388 coroapi.cede_notself = api_cede_notself; 3124 coroapi.cede_notself = api_cede_notself;
2389 coroapi.ready = api_ready; 3125 coroapi.ready = api_ready;
2390 coroapi.is_ready = api_is_ready; 3126 coroapi.is_ready = api_is_ready;
2391 coroapi.nready = coro_nready; 3127 coroapi.nready = coro_nready;
2392 coroapi.current = coro_current; 3128 coroapi.current = coro_current;
2393 3129
2394 GCoroAPI = &coroapi; 3130 /*GCoroAPI = &coroapi;*/
2395 sv_setiv (sv, (IV)&coroapi); 3131 sv_setiv (sv, (IV)&coroapi);
2396 SvREADONLY_on (sv); 3132 SvREADONLY_on (sv);
2397 } 3133 }
2398} 3134}
2399 3135
2400void 3136void
3137terminate (...)
3138 CODE:
3139 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3140
3141void
2401schedule (...) 3142schedule (...)
2402 CODE: 3143 CODE:
2403 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3144 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3145
3146void
3147schedule_to (...)
3148 CODE:
3149 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3150
3151void
3152cede_to (...)
3153 CODE:
3154 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2404 3155
2405void 3156void
2406cede (...) 3157cede (...)
2407 CODE: 3158 CODE:
2408 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3159 CORO_EXECUTE_SLF_XS (slf_init_cede);
2409 3160
2410void 3161void
2411cede_notself (...) 3162cede_notself (...)
2412 CODE: 3163 CODE:
2413 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3164 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3165
3166void
3167_cancel (Coro::State self)
3168 CODE:
3169 coro_state_destroy (aTHX_ self);
3170 coro_call_on_destroy (aTHX_ self);
2414 3171
2415void 3172void
2416_set_current (SV *current) 3173_set_current (SV *current)
2417 PROTOTYPE: $ 3174 PROTOTYPE: $
2418 CODE: 3175 CODE:
… …
2421 3178
2422void 3179void
2423_set_readyhook (SV *hook) 3180_set_readyhook (SV *hook)
2424 PROTOTYPE: $ 3181 PROTOTYPE: $
2425 CODE: 3182 CODE:
2426 LOCK;
2427 SvREFCNT_dec (coro_readyhook); 3183 SvREFCNT_dec (coro_readyhook);
2428 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3184 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2429 UNLOCK;
2430 3185
2431int 3186int
2432prio (Coro::State coro, int newprio = 0) 3187prio (Coro::State coro, int newprio = 0)
2433 PROTOTYPE: $;$ 3188 PROTOTYPE: $;$
2434 ALIAS: 3189 ALIAS:
… …
2465 CODE: 3220 CODE:
2466 RETVAL = coro_nready; 3221 RETVAL = coro_nready;
2467 OUTPUT: 3222 OUTPUT:
2468 RETVAL 3223 RETVAL
2469 3224
2470# for async_pool speedup
2471void 3225void
2472_pool_1 (SV *cb) 3226_pool_handler (...)
2473 CODE: 3227 CODE:
2474{ 3228 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2475 struct coro *coro = SvSTATE (coro_current);
2476 HV *hv = (HV *)SvRV (coro_current);
2477 AV *defav = GvAV (PL_defgv);
2478 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2479 AV *invoke_av;
2480 int i, len;
2481 3229
2482 if (!invoke) 3230void
3231async_pool (SV *cv, ...)
3232 PROTOTYPE: &@
3233 PPCODE:
3234{
3235 HV *hv = (HV *)av_pop (av_async_pool);
3236 AV *av = newAV ();
3237 SV *cb = ST (0);
3238 int i;
3239
3240 av_extend (av, items - 2);
3241 for (i = 1; i < items; ++i)
3242 av_push (av, SvREFCNT_inc_NN (ST (i)));
3243
3244 if ((SV *)hv == &PL_sv_undef)
2483 { 3245 {
2484 SV *old = PL_diehook; 3246 PUSHMARK (SP);
2485 PL_diehook = 0; 3247 EXTEND (SP, 2);
2486 SvREFCNT_dec (old); 3248 PUSHs (sv_Coro);
2487 croak ("\3async_pool terminate\2\n"); 3249 PUSHs ((SV *)cv_pool_handler);
3250 PUTBACK;
3251 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3252 SPAGAIN;
3253
3254 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2488 } 3255 }
2489 3256
2490 SvREFCNT_dec (coro->saved_deffh);
2491 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2492
2493 hv_store (hv, "desc", sizeof ("desc") - 1,
2494 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2495
2496 invoke_av = (AV *)SvRV (invoke);
2497 len = av_len (invoke_av);
2498
2499 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2500
2501 if (len > 0)
2502 { 3257 {
2503 av_fill (defav, len - 1); 3258 struct coro *coro = SvSTATE_hv (hv);
2504 for (i = 0; i < len; ++i) 3259
2505 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3260 assert (!coro->invoke_cb);
3261 assert (!coro->invoke_av);
3262 coro->invoke_cb = SvREFCNT_inc (cb);
3263 coro->invoke_av = av;
2506 } 3264 }
2507}
2508 3265
2509void 3266 api_ready (aTHX_ (SV *)hv);
2510_pool_2 (SV *cb) 3267
3268 if (GIMME_V != G_VOID)
3269 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3270 else
3271 SvREFCNT_dec (hv);
3272}
3273
3274SV *
3275rouse_cb ()
3276 PROTOTYPE:
2511 CODE: 3277 CODE:
2512{ 3278 RETVAL = coro_new_rouse_cb (aTHX);
2513 struct coro *coro = SvSTATE (coro_current);
2514
2515 sv_setsv (cb, &PL_sv_undef);
2516
2517 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2518 coro->saved_deffh = 0;
2519
2520 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2521 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2522 {
2523 SV *old = PL_diehook;
2524 PL_diehook = 0;
2525 SvREFCNT_dec (old);
2526 croak ("\3async_pool terminate\2\n");
2527 }
2528
2529 av_clear (GvAV (PL_defgv));
2530 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2531 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2532
2533 coro->prio = 0;
2534
2535 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2536 api_trace (aTHX_ coro_current, 0);
2537
2538 av_push (av_async_pool, newSVsv (coro_current));
2539}
2540
2541#if 0
2542
2543void
2544_generator_call (...)
2545 PROTOTYPE: @
2546 PPCODE:
2547 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2548 xxxx
2549 abort ();
2550
2551SV *
2552gensub (SV *sub, ...)
2553 PROTOTYPE: &;@
2554 CODE:
2555{
2556 struct coro *coro;
2557 MAGIC *mg;
2558 CV *xcv;
2559 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2560 int i;
2561
2562 CvGV (ncv) = CvGV (cv);
2563 CvFILE (ncv) = CvFILE (cv);
2564
2565 Newz (0, coro, 1, struct coro);
2566 coro->args = newAV ();
2567 coro->flags = CF_NEW;
2568
2569 av_extend (coro->args, items - 1);
2570 for (i = 1; i < items; i++)
2571 av_push (coro->args, newSVsv (ST (i)));
2572
2573 CvISXSUB_on (ncv);
2574 CvXSUBANY (ncv).any_ptr = (void *)coro;
2575
2576 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2577
2578 CvXSUB (ncv) = CvXSUB (xcv);
2579 CvANON_on (ncv);
2580
2581 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2582 RETVAL = newRV_noinc ((SV *)ncv);
2583}
2584 OUTPUT: 3279 OUTPUT:
2585 RETVAL 3280 RETVAL
2586 3281
2587#endif
2588
2589
2590MODULE = Coro::State PACKAGE = Coro::AIO
2591
2592void 3282void
2593_get_state (SV *self) 3283rouse_wait (...)
2594 PROTOTYPE: $ 3284 PROTOTYPE: ;$
2595 PPCODE: 3285 PPCODE:
2596{ 3286 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2597 AV *defav = GvAV (PL_defgv);
2598 AV *av = newAV ();
2599 int i;
2600 SV *data_sv = newSV (sizeof (struct io_state));
2601 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2602 SvCUR_set (data_sv, sizeof (struct io_state));
2603 SvPOK_only (data_sv);
2604
2605 data->errorno = errno;
2606 data->laststype = PL_laststype;
2607 data->laststatval = PL_laststatval;
2608 data->statcache = PL_statcache;
2609
2610 av_extend (av, AvFILLp (defav) + 1 + 1);
2611
2612 for (i = 0; i <= AvFILLp (defav); ++i)
2613 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2614
2615 av_push (av, data_sv);
2616
2617 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2618
2619 api_ready (aTHX_ self);
2620}
2621
2622void
2623_set_state (SV *state)
2624 PROTOTYPE: $
2625 PPCODE:
2626{
2627 AV *av = (AV *)SvRV (state);
2628 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2629 int i;
2630
2631 errno = data->errorno;
2632 PL_laststype = data->laststype;
2633 PL_laststatval = data->laststatval;
2634 PL_statcache = data->statcache;
2635
2636 EXTEND (SP, AvFILLp (av));
2637 for (i = 0; i < AvFILLp (av); ++i)
2638 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2639}
2640
2641
2642MODULE = Coro::State PACKAGE = Coro::AnyEvent
2643
2644BOOT:
2645 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2646
2647void
2648_schedule (...)
2649 CODE:
2650{
2651 static int incede;
2652
2653 api_cede_notself (aTHX);
2654
2655 ++incede;
2656 while (coro_nready >= incede && api_cede (aTHX))
2657 ;
2658
2659 sv_setsv (sv_activity, &PL_sv_undef);
2660 if (coro_nready >= incede)
2661 {
2662 PUSHMARK (SP);
2663 PUTBACK;
2664 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2665 SPAGAIN;
2666 }
2667
2668 --incede;
2669}
2670 3287
2671 3288
2672MODULE = Coro::State PACKAGE = PerlIO::cede 3289MODULE = Coro::State PACKAGE = PerlIO::cede
2673 3290
2674BOOT: 3291BOOT:
2675 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3292 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2676 3293
3294
2677MODULE = Coro::State PACKAGE = Coro::Semaphore 3295MODULE = Coro::State PACKAGE = Coro::Semaphore
2678 3296
2679SV * 3297SV *
2680new (SV *klass, SV *count_ = 0) 3298new (SV *klass, SV *count = 0)
2681 CODE: 3299 CODE:
2682{ 3300 RETVAL = sv_bless (
2683 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3301 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2684 AV *av = newAV (); 3302 GvSTASH (CvGV (cv))
2685 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3303 );
2686 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3304 OUTPUT:
2687} 3305 RETVAL
3306
3307# helper for Coro::Channel
3308SV *
3309_alloc (int count)
3310 CODE:
3311 RETVAL = coro_waitarray_new (aTHX_ count);
2688 OUTPUT: 3312 OUTPUT:
2689 RETVAL 3313 RETVAL
2690 3314
2691SV * 3315SV *
2692count (SV *self) 3316count (SV *self)
… …
2698void 3322void
2699up (SV *self, int adjust = 1) 3323up (SV *self, int adjust = 1)
2700 ALIAS: 3324 ALIAS:
2701 adjust = 1 3325 adjust = 1
2702 CODE: 3326 CODE:
2703{ 3327 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2704 AV *av = (AV *)SvRV (self);
2705 SV *count_sv = AvARRAY (av)[0];
2706 IV count = SvIVX (count_sv);
2707
2708 count += ix ? adjust : 1;
2709 SvIVX (count_sv) = count;
2710
2711 /* now wake up as many waiters as possible */
2712 while (count > 0 && AvFILLp (av) >= count)
2713 {
2714 SV *cb;
2715
2716 /* swap first two elements so we can shift a waiter */
2717 AvARRAY (av)[0] = AvARRAY (av)[1];
2718 AvARRAY (av)[1] = count_sv;
2719 cb = av_shift (av);
2720
2721 if (SvOBJECT (cb))
2722 api_ready (aTHX_ cb);
2723 else
2724 croak ("callbacks not yet supported");
2725
2726 SvREFCNT_dec (cb);
2727 }
2728}
2729 3328
2730void 3329void
2731down (SV *self) 3330down (...)
2732 CODE: 3331 CODE:
2733 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3332 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3333
3334void
3335wait (...)
3336 CODE:
3337 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2734 3338
2735void 3339void
2736try (SV *self) 3340try (SV *self)
2737 PPCODE: 3341 PPCODE:
2738{ 3342{
… …
2750 XSRETURN_NO; 3354 XSRETURN_NO;
2751} 3355}
2752 3356
2753void 3357void
2754waiters (SV *self) 3358waiters (SV *self)
2755 CODE: 3359 PPCODE:
2756{ 3360{
2757 AV *av = (AV *)SvRV (self); 3361 AV *av = (AV *)SvRV (self);
3362 int wcount = AvFILLp (av) + 1 - 1;
2758 3363
2759 if (GIMME_V == G_SCALAR) 3364 if (GIMME_V == G_SCALAR)
2760 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3365 XPUSHs (sv_2mortal (newSViv (wcount)));
2761 else 3366 else
2762 { 3367 {
2763 int i; 3368 int i;
2764 EXTEND (SP, AvFILLp (av) + 1 - 1); 3369 EXTEND (SP, wcount);
2765 for (i = 1; i <= AvFILLp (av); ++i) 3370 for (i = 1; i <= wcount; ++i)
2766 PUSHs (newSVsv (AvARRAY (av)[i])); 3371 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2767 } 3372 }
2768} 3373}
2769 3374
3375MODULE = Coro::State PACKAGE = Coro::Signal
3376
3377SV *
3378new (SV *klass)
3379 CODE:
3380 RETVAL = sv_bless (
3381 coro_waitarray_new (aTHX_ 0),
3382 GvSTASH (CvGV (cv))
3383 );
3384 OUTPUT:
3385 RETVAL
3386
3387void
3388wait (...)
3389 CODE:
3390 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3391
3392void
3393broadcast (SV *self)
3394 CODE:
3395{
3396 AV *av = (AV *)SvRV (self);
3397 coro_signal_wake (aTHX_ av, AvFILLp (av));
3398}
3399
3400void
3401send (SV *self)
3402 CODE:
3403{
3404 AV *av = (AV *)SvRV (self);
3405
3406 if (AvFILLp (av))
3407 coro_signal_wake (aTHX_ av, 1);
3408 else
3409 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3410}
3411
3412IV
3413awaited (SV *self)
3414 CODE:
3415 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3416 OUTPUT:
3417 RETVAL
3418
3419
3420MODULE = Coro::State PACKAGE = Coro::AnyEvent
3421
3422BOOT:
3423 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3424
3425void
3426_schedule (...)
3427 CODE:
3428{
3429 static int incede;
3430
3431 api_cede_notself (aTHX);
3432
3433 ++incede;
3434 while (coro_nready >= incede && api_cede (aTHX))
3435 ;
3436
3437 sv_setsv (sv_activity, &PL_sv_undef);
3438 if (coro_nready >= incede)
3439 {
3440 PUSHMARK (SP);
3441 PUTBACK;
3442 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3443 }
3444
3445 --incede;
3446}
3447
3448
3449MODULE = Coro::State PACKAGE = Coro::AIO
3450
3451void
3452_register (char *target, char *proto, SV *req)
3453 CODE:
3454{
3455 CV *req_cv = coro_sv_2cv (aTHX_ req);
3456 /* newXSproto doesn't return the CV on 5.8 */
3457 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3458 sv_setpv ((SV *)slf_cv, proto);
3459 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3460}
3461

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines