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Comparing Coro/Coro/State.xs (file contents):
Revision 1.284 by root, Mon Nov 17 01:05:47 2008 UTC vs.
Revision 1.325 by root, Sun Nov 23 06:48:45 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# if CORO_PTHREAD 159# if CORO_PTHREAD
148static void *coro_thx; 160static void *coro_thx;
149# endif 161# endif
150#endif 162#endif
151 163
152/* helper storage struct for Coro::AIO */
153struct io_state
154{
155 AV *res;
156 int errorno;
157 I32 laststype; /* U16 in 5.10.0 */
158 int laststatval;
159 Stat_t statcache;
160};
161
162static 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);
163 169
164static U32 cctx_gen; 170static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 174static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180
172static GV *irsgv; /* $/ */ 181static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 182static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 183static SV *rv_diehook;
175static SV *rv_warnhook; 184static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 185static HV *hv_sig; /* %SIG */
177 186
178/* async_pool helper stuff */ 187/* async_pool helper stuff */
179static SV *sv_pool_rss; 188static SV *sv_pool_rss;
180static SV *sv_pool_size; 189static SV *sv_pool_size;
190static SV *sv_async_pool_idle; /* description string */
181static 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;
182 195
183/* Coro::AnyEvent */ 196/* Coro::AnyEvent */
184static SV *sv_activity; 197static SV *sv_activity;
185 198
186static struct coro_cctx *cctx_first; 199static struct coro_cctx *cctx_first;
… …
215 int valgrind_id; 228 int valgrind_id;
216#endif 229#endif
217 unsigned char flags; 230 unsigned char flags;
218} coro_cctx; 231} coro_cctx;
219 232
233coro_cctx *cctx_current; /* the currently running cctx */
234
235/*****************************************************************************/
236
220enum { 237enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 238 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
… …
241/* this is a structure representing a perl-level coroutine */ 258/* this is a structure representing a perl-level coroutine */
242struct coro { 259struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */ 260 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 261 coro_cctx *cctx;
245 262
246 /* process data */ 263 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 264 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 265 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 266 perl_slots *slot; /* basically the saved sp */
250 267
268 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 269 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 270 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 271 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 272 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro); 273 void (*on_destroy)(pTHX_ struct coro *coro);
256 274
257 /* statistics */ 275 /* statistics */
258 int usecount; /* number of transfers to this coro */ 276 int usecount; /* number of transfers to this coro */
259 277
260 /* coro process data */ 278 /* coro process data */
261 int prio; 279 int prio;
262 SV *throw; /* exception to be thrown */ 280 SV *except; /* exception to be thrown */
281 SV *rouse_cb;
263 282
264 /* async_pool */ 283 /* async_pool */
265 SV *saved_deffh; 284 SV *saved_deffh;
285 SV *invoke_cb;
286 AV *invoke_av;
266 287
267 /* linked list */ 288 /* linked list */
268 struct coro *next, *prev; 289 struct coro *next, *prev;
269}; 290};
270 291
271typedef struct coro *Coro__State; 292typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 293typedef struct coro *Coro__State_or_hashref;
273 294
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 */
274static struct CoroSLF slf_frame; /* the current slf frame */ 298static struct CoroSLF slf_frame; /* the current slf frame */
275 299
276/** Coro ********************************************************************/ 300/** Coro ********************************************************************/
277 301
278#define PRIO_MAX 3 302#define PRIO_MAX 3
… …
284 308
285/* for Coro.pm */ 309/* for Coro.pm */
286static SV *coro_current; 310static SV *coro_current;
287static SV *coro_readyhook; 311static SV *coro_readyhook;
288static 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;
289static struct coro *coro_first; 314static struct coro *coro_first;
290#define coro_nready coroapi.nready 315#define coro_nready coroapi.nready
291 316
292/** lowlevel stuff **********************************************************/ 317/** lowlevel stuff **********************************************************/
293 318
… …
319 get_hv (name, create); 344 get_hv (name, create);
320#endif 345#endif
321 return get_hv (name, create); 346 return get_hv (name, create);
322} 347}
323 348
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
324static AV * 358static AV *
325coro_clone_padlist (pTHX_ CV *cv) 359coro_derive_padlist (pTHX_ CV *cv)
326{ 360{
327 AV *padlist = CvPADLIST (cv); 361 AV *padlist = CvPADLIST (cv);
328 AV *newpadlist, *newpad; 362 AV *newpadlist, *newpad;
329 363
330 newpadlist = newAV (); 364 newpadlist = newAV ();
… …
380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 414 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381 415
382 return 0; 416 return 0;
383} 417}
384 418
385#define CORO_MAGIC_type_cv PERL_MAGIC_ext 419#define CORO_MAGIC_type_cv 26
386#define CORO_MAGIC_type_state PERL_MAGIC_ext 420#define CORO_MAGIC_type_state PERL_MAGIC_ext
387 421
388static MGVTBL coro_cv_vtbl = { 422static MGVTBL coro_cv_vtbl = {
389 0, 0, 0, 0, 423 0, 0, 0, 0,
390 coro_cv_free 424 coro_cv_free
391}; 425};
392 426
427#define CORO_MAGIC_NN(sv, type) \
428 (expect_true (SvMAGIC (sv)->mg_type == type) \
429 ? SvMAGIC (sv) \
430 : mg_find (sv, type))
431
393#define CORO_MAGIC(sv, type) \ 432#define CORO_MAGIC(sv, type) \
394 expect_true (SvMAGIC (sv)) \ 433 (expect_true (SvMAGIC (sv)) \
395 ? expect_true (SvMAGIC (sv)->mg_type == type) \ 434 ? CORO_MAGIC_NN (sv, type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type) \
398 : 0 435 : 0)
399 436
400#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)
401#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)
402 439
403INLINE struct coro * 440INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro) 441SvSTATE_ (pTHX_ SV *coro)
405{ 442{
406 HV *stash; 443 HV *stash;
… …
424 return (struct coro *)mg->mg_ptr; 461 return (struct coro *)mg->mg_ptr;
425} 462}
426 463
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 464#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428 465
429/* fastert than SvSTATE, but expects a coroutine hv */ 466/* faster than SvSTATE, but expects a coroutine hv */
430INLINE struct coro * 467#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) 468#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441 469
442/* the next two functions merely cache the padlists */ 470/* the next two functions merely cache the padlists */
443static void 471static void
444get_padlist (pTHX_ CV *cv) 472get_padlist (pTHX_ CV *cv)
… …
451 else 479 else
452 { 480 {
453#if CORO_PREFER_PERL_FUNCTIONS 481#if CORO_PREFER_PERL_FUNCTIONS
454 /* this is probably cleaner? but also slower! */ 482 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */ 483 /* in practise, it seems to be less stable */
456 CV *cp = Perl_cv_clone (cv); 484 CV *cp = Perl_cv_clone (aTHX_ cv);
457 CvPADLIST (cv) = CvPADLIST (cp); 485 CvPADLIST (cv) = CvPADLIST (cp);
458 CvPADLIST (cp) = 0; 486 CvPADLIST (cp) = 0;
459 SvREFCNT_dec (cp); 487 SvREFCNT_dec (cp);
460#else 488#else
461 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 489 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
462#endif 490#endif
463 } 491 }
464} 492}
465 493
466static void 494static void
… …
513 } 541 }
514 542
515 PUTBACK; 543 PUTBACK;
516 } 544 }
517 545
518 slf_frame = c->slf_frame; 546 slf_frame = c->slf_frame;
547 CORO_THROW = c->except;
519} 548}
520 549
521static void 550static void
522save_perl (pTHX_ Coro__State c) 551save_perl (pTHX_ Coro__State c)
523{ 552{
553 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 554 c->slf_frame = slf_frame;
525 555
526 { 556 {
527 dSP; 557 dSP;
528 I32 cxix = cxstack_ix; 558 I32 cxix = cxstack_ix;
… …
603 * of perl.c:init_stacks, except that it uses less memory 633 * of perl.c:init_stacks, except that it uses less memory
604 * on the (sometimes correct) assumption that coroutines do 634 * on the (sometimes correct) assumption that coroutines do
605 * not usually need a lot of stackspace. 635 * not usually need a lot of stackspace.
606 */ 636 */
607#if CORO_PREFER_PERL_FUNCTIONS 637#if CORO_PREFER_PERL_FUNCTIONS
608# define coro_init_stacks init_stacks 638# define coro_init_stacks(thx) init_stacks ()
609#else 639#else
610static void 640static void
611coro_init_stacks (pTHX) 641coro_init_stacks (pTHX)
612{ 642{
613 PL_curstackinfo = new_stackinfo(32, 8); 643 PL_curstackinfo = new_stackinfo(32, 8);
… …
676#if !PERL_VERSION_ATLEAST (5,10,0) 706#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 707 Safefree (PL_retstack);
678#endif 708#endif
679} 709}
680 710
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
681static size_t 720static size_t
682coro_rss (pTHX_ struct coro *coro) 721coro_rss (pTHX_ struct coro *coro)
683{ 722{
684 size_t rss = sizeof (*coro); 723 size_t rss = sizeof (*coro);
685 724
686 if (coro->mainstack) 725 if (coro->mainstack)
687 { 726 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 727 if (coro->flags & CF_RUNNING)
692 { 728 {
693 slot = &tmp_slot; 729 #define SYM(sym) PL_ ## sym
694 730 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 731 #undef SYM
698 } 732 }
699 else 733 else
700 slot = coro->slot;
701
702 if (slot)
703 { 734 {
704 rss += sizeof (slot->curstackinfo); 735 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 736 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 737 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 738 }
716 } 739 }
717 740
718 return rss; 741 return rss;
719} 742}
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 844slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 845{
823 return 0; 846 return 0;
824} 847}
825 848
826static 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 */
827coro_setup (pTHX_ struct coro *coro) 858coro_setup (pTHX_ struct coro *coro)
828{ 859{
829 /* 860 /*
830 * emulate part of the perl startup here. 861 * emulate part of the perl startup here.
831 */ 862 */
… …
858 { 889 {
859 dSP; 890 dSP;
860 UNOP myop; 891 UNOP myop;
861 892
862 Zero (&myop, 1, UNOP); 893 Zero (&myop, 1, UNOP);
863 myop.op_next = Nullop; 894 myop.op_next = Nullop;
895 myop.op_type = OP_ENTERSUB;
864 myop.op_flags = OPf_WANT_VOID; 896 myop.op_flags = OPf_WANT_VOID;
865 897
866 PUSHMARK (SP); 898 PUSHMARK (SP);
867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 899 PUSHs ((SV *)coro->startcv);
868 PUTBACK; 900 PUTBACK;
869 PL_op = (OP *)&myop; 901 PL_op = (OP *)&myop;
870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 902 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
871 SPAGAIN;
872 } 903 }
873 904
874 /* 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
875 * 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.
876 */ 907 */
877 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 */
878 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;
879} 921}
880 922
881static void 923static void
882coro_destruct (pTHX_ struct coro *coro) 924coro_destruct (pTHX_ struct coro *coro)
883{ 925{
… …
907 949
908 SvREFCNT_dec (PL_diehook); 950 SvREFCNT_dec (PL_diehook);
909 SvREFCNT_dec (PL_warnhook); 951 SvREFCNT_dec (PL_warnhook);
910 952
911 SvREFCNT_dec (coro->saved_deffh); 953 SvREFCNT_dec (coro->saved_deffh);
912 SvREFCNT_dec (coro->throw); 954 SvREFCNT_dec (coro->rouse_cb);
955 SvREFCNT_dec (coro->invoke_cb);
956 SvREFCNT_dec (coro->invoke_av);
913 957
914 coro_destruct_stacks (aTHX); 958 coro_destruct_stacks (aTHX);
915} 959}
916 960
917INLINE void 961INLINE void
… …
927static int 971static int
928runops_trace (pTHX) 972runops_trace (pTHX)
929{ 973{
930 COP *oldcop = 0; 974 COP *oldcop = 0;
931 int oldcxix = -2; 975 int oldcxix = -2;
932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
933 coro_cctx *cctx = coro->cctx;
934 976
935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 977 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
936 { 978 {
937 PERL_ASYNC_CHECK (); 979 PERL_ASYNC_CHECK ();
938 980
939 if (cctx->flags & CC_TRACE_ALL) 981 if (cctx_current->flags & CC_TRACE_ALL)
940 { 982 {
941 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 983 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
942 { 984 {
943 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 985 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
944 SV **bot, **top; 986 SV **bot, **top;
945 AV *av = newAV (); /* return values */ 987 AV *av = newAV (); /* return values */
946 SV **cb; 988 SV **cb;
… …
983 1025
984 if (PL_curcop != &PL_compiling) 1026 if (PL_curcop != &PL_compiling)
985 { 1027 {
986 SV **cb; 1028 SV **cb;
987 1029
988 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1030 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
989 { 1031 {
990 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1032 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
991 1033
992 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1034 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
993 { 1035 {
994 runops_proc_t old_runops = PL_runops;
995 dSP; 1036 dSP;
996 GV *gv = CvGV (cx->blk_sub.cv); 1037 GV *gv = CvGV (cx->blk_sub.cv);
997 SV *fullname = sv_2mortal (newSV (0)); 1038 SV *fullname = sv_2mortal (newSV (0));
998 1039
999 if (isGV (gv)) 1040 if (isGV (gv))
… …
1004 SAVETMPS; 1045 SAVETMPS;
1005 EXTEND (SP, 3); 1046 EXTEND (SP, 3);
1006 PUSHMARK (SP); 1047 PUSHMARK (SP);
1007 PUSHs (&PL_sv_yes); 1048 PUSHs (&PL_sv_yes);
1008 PUSHs (fullname); 1049 PUSHs (fullname);
1009 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1050 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1010 PUTBACK; 1051 PUTBACK;
1011 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1052 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1012 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1053 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1013 SPAGAIN; 1054 SPAGAIN;
1014 FREETMPS; 1055 FREETMPS;
… …
1017 } 1058 }
1018 1059
1019 oldcxix = cxstack_ix; 1060 oldcxix = cxstack_ix;
1020 } 1061 }
1021 1062
1022 if (cctx->flags & CC_TRACE_LINE) 1063 if (cctx_current->flags & CC_TRACE_LINE)
1023 { 1064 {
1024 dSP; 1065 dSP;
1025 1066
1026 PL_runops = RUNOPS_DEFAULT; 1067 PL_runops = RUNOPS_DEFAULT;
1027 ENTER; 1068 ENTER;
… …
1046 1087
1047 TAINT_NOT; 1088 TAINT_NOT;
1048 return 0; 1089 return 0;
1049} 1090}
1050 1091
1092static struct CoroSLF cctx_ssl_frame;
1093
1051static void 1094static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1095slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1053{ 1096{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0; 1097 ta->prev = 0;
1056} 1098}
1057 1099
1058/* inject a fake call to Coro::State::_cctx_init into the execution */ 1100static int
1059/* _cctx_init should be careful, as it could be called at almost any time */ 1101slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1060/* during execution of a perl program */ 1102{
1061/* also initialises PL_top_env */ 1103 *frame = cctx_ssl_frame;
1104
1105 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1106}
1107
1108/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1062static void NOINLINE 1109static void NOINLINE
1063cctx_prepare (pTHX_ coro_cctx *cctx) 1110cctx_prepare (pTHX)
1064{ 1111{
1065 dSP;
1066 UNOP myop;
1067
1068 PL_top_env = &PL_start_env; 1112 PL_top_env = &PL_start_env;
1069 1113
1070 if (cctx->flags & CC_TRACE) 1114 if (cctx_current->flags & CC_TRACE)
1071 PL_runops = runops_trace; 1115 PL_runops = runops_trace;
1072 1116
1073 Zero (&myop, 1, UNOP); 1117 /* we already must be executing an SLF op, there is no other valid way
1074 myop.op_next = PL_op; 1118 * that can lead to creation of a new cctx */
1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1119 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1120 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1076 1121
1077 PUSHMARK (SP); 1122 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1078 EXTEND (SP, 2); 1123 cctx_ssl_frame = slf_frame;
1079 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1124
1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1125 slf_frame.prepare = slf_prepare_set_stacklevel;
1081 PUTBACK; 1126 slf_frame.check = slf_check_set_stacklevel;
1082 PL_op = (OP *)&myop;
1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1084 SPAGAIN;
1085} 1127}
1086 1128
1087/* the tail of transfer: execute stuff we can only do after a transfer */ 1129/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void 1130INLINE void
1089transfer_tail (pTHX) 1131transfer_tail (pTHX)
… …
1108 /* normally we would need to skip the entersub here */ 1150 /* normally we would need to skip the entersub here */
1109 /* not doing so will re-execute it, which is exactly what we want */ 1151 /* not doing so will re-execute it, which is exactly what we want */
1110 /* PL_nop = PL_nop->op_next */ 1152 /* PL_nop = PL_nop->op_next */
1111 1153
1112 /* inject a fake subroutine call to cctx_init */ 1154 /* inject a fake subroutine call to cctx_init */
1113 cctx_prepare (aTHX_ (coro_cctx *)arg); 1155 cctx_prepare (aTHX);
1114 1156
1115 /* cctx_run is the alternative tail of transfer() */ 1157 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX); 1158 transfer_tail (aTHX);
1117 1159
1118 /* somebody or something will hit me for both perl_run and PL_restartop */ 1160 /* somebody or something will hit me for both perl_run and PL_restartop */
1119 PL_restartop = PL_op; 1161 PL_restartop = PL_op;
1120 perl_run (PL_curinterp); 1162 perl_run (PL_curinterp);
1163 /*
1164 * Unfortunately, there is no way to get at the return values of the
1165 * coro body here, as perl_run destroys these
1166 */
1121 1167
1122 /* 1168 /*
1123 * If perl-run returns we assume exit() was being called or the coro 1169 * If perl-run returns we assume exit() was being called or the coro
1124 * fell off the end, which seems to be the only valid (non-bug) 1170 * fell off the end, which seems to be the only valid (non-bug)
1125 * reason for perl_run to return. We try to exit by jumping to the 1171 * reason for perl_run to return. We try to exit by jumping to the
… …
1209cctx_destroy (coro_cctx *cctx) 1255cctx_destroy (coro_cctx *cctx)
1210{ 1256{
1211 if (!cctx) 1257 if (!cctx)
1212 return; 1258 return;
1213 1259
1260 assert (cctx != cctx_current);//D temporary
1261
1214 --cctx_count; 1262 --cctx_count;
1215 coro_destroy (&cctx->cctx); 1263 coro_destroy (&cctx->cctx);
1216 1264
1217 /* coro_transfer creates new, empty cctx's */ 1265 /* coro_transfer creates new, empty cctx's */
1218 if (cctx->sptr) 1266 if (cctx->sptr)
… …
1276/** coroutine switching *****************************************************/ 1324/** coroutine switching *****************************************************/
1277 1325
1278static void 1326static void
1279transfer_check (pTHX_ struct coro *prev, struct coro *next) 1327transfer_check (pTHX_ struct coro *prev, struct coro *next)
1280{ 1328{
1329 /* TODO: throwing up here is considered harmful */
1330
1281 if (expect_true (prev != next)) 1331 if (expect_true (prev != next))
1282 { 1332 {
1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1333 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1334 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1285 1335
1286 if (expect_false (next->flags & CF_RUNNING)) 1336 if (expect_false (next->flags & CF_RUNNING))
1287 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); 1337 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1288 1338
1289 if (expect_false (next->flags & CF_DESTROYED)) 1339 if (expect_false (next->flags & CF_DESTROYED))
… …
1295#endif 1345#endif
1296 } 1346 }
1297} 1347}
1298 1348
1299/* always use the TRANSFER macro */ 1349/* always use the TRANSFER macro */
1300static void NOINLINE 1350static void NOINLINE /* noinline so we have a fixed stackframe */
1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1351transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1302{ 1352{
1303 dSTACKLEVEL; 1353 dSTACKLEVEL;
1304 1354
1305 /* sometimes transfer is only called to set idle_sp */ 1355 /* sometimes transfer is only called to set idle_sp */
1306 if (expect_false (!next)) 1356 if (expect_false (!prev))
1307 { 1357 {
1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1358 cctx_current->idle_sp = STACKLEVEL;
1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1359 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1310 } 1360 }
1311 else if (expect_true (prev != next)) 1361 else if (expect_true (prev != next))
1312 { 1362 {
1313 coro_cctx *prev__cctx; 1363 coro_cctx *cctx_prev;
1314 1364
1315 if (expect_false (prev->flags & CF_NEW)) 1365 if (expect_false (prev->flags & CF_NEW))
1316 { 1366 {
1317 /* create a new empty/source context */ 1367 /* create a new empty/source context */
1318 prev->cctx = cctx_new_empty ();
1319 prev->flags &= ~CF_NEW; 1368 prev->flags &= ~CF_NEW;
1320 prev->flags |= CF_RUNNING; 1369 prev->flags |= CF_RUNNING;
1321 } 1370 }
1322 1371
1323 prev->flags &= ~CF_RUNNING; 1372 prev->flags &= ~CF_RUNNING;
… …
1334 coro_setup (aTHX_ next); 1383 coro_setup (aTHX_ next);
1335 } 1384 }
1336 else 1385 else
1337 load_perl (aTHX_ next); 1386 load_perl (aTHX_ next);
1338 1387
1339 prev__cctx = prev->cctx; 1388 assert (!prev->cctx);//D temporary
1340 1389
1341 /* possibly untie and reuse the cctx */ 1390 /* possibly untie and reuse the cctx */
1342 if (expect_true ( 1391 if (expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel 1392 cctx_current->idle_sp == STACKLEVEL
1344 && !(prev__cctx->flags & CC_TRACE) 1393 && !(cctx_current->flags & CC_TRACE)
1345 && !force_cctx 1394 && !force_cctx
1346 )) 1395 ))
1347 { 1396 {
1348 /* 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 */
1349 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));
1350 1399
1351 prev->cctx = 0;
1352
1353 /* 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. */
1354 /* 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 running cctx while still in use */
1355 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1402 if (expect_false (CCTX_EXPIRED (cctx_current)))
1356 if (!next->cctx) 1403 if (expect_true (!next->cctx))
1357 next->cctx = cctx_get (aTHX); 1404 next->cctx = cctx_get (aTHX);
1358 1405
1359 cctx_put (prev__cctx); 1406 cctx_put (cctx_current);
1360 } 1407 }
1408 else
1409 prev->cctx = cctx_current;
1361 1410
1362 ++next->usecount; 1411 ++next->usecount;
1363 1412
1364 if (expect_true (!next->cctx)) 1413 cctx_prev = cctx_current;
1365 next->cctx = cctx_get (aTHX); 1414 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1366 1415
1367 if (expect_false (prev__cctx != next->cctx)) 1416 next->cctx = 0;
1417
1418 if (expect_false (cctx_prev != cctx_current))
1368 { 1419 {
1369 prev__cctx->top_env = PL_top_env; 1420 cctx_prev->top_env = PL_top_env;
1370 PL_top_env = next->cctx->top_env; 1421 PL_top_env = cctx_current->top_env;
1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1422 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1372 } 1423 }
1373 1424
1374 transfer_tail (aTHX); 1425 transfer_tail (aTHX);
1375 } 1426 }
1376} 1427}
… …
1415 1466
1416 coro->slot = 0; 1467 coro->slot = 0;
1417 } 1468 }
1418 1469
1419 cctx_destroy (coro->cctx); 1470 cctx_destroy (coro->cctx);
1471 SvREFCNT_dec (coro->startcv);
1420 SvREFCNT_dec (coro->args); 1472 SvREFCNT_dec (coro->args);
1473 SvREFCNT_dec (CORO_THROW);
1421 1474
1422 if (coro->next) coro->next->prev = coro->prev; 1475 if (coro->next) coro->next->prev = coro->prev;
1423 if (coro->prev) coro->prev->next = coro->next; 1476 if (coro->prev) coro->prev->next = coro->next;
1424 if (coro == coro_first) coro_first = coro->next; 1477 if (coro == coro_first) coro_first = coro->next;
1425 1478
… …
1479 1532
1480 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1533 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1481 TRANSFER (ta, 1); 1534 TRANSFER (ta, 1);
1482} 1535}
1483 1536
1537/*****************************************************************************/
1538/* gensub: simple closure generation utility */
1539
1540#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1541
1542/* create a closure from XS, returns a code reference */
1543/* the arg can be accessed via GENSUB_ARG from the callback */
1544/* the callback must use dXSARGS/XSRETURN */
1545static SV *
1546gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1547{
1548 CV *cv = (CV *)newSV (0);
1549
1550 sv_upgrade ((SV *)cv, SVt_PVCV);
1551
1552 CvANON_on (cv);
1553 CvISXSUB_on (cv);
1554 CvXSUB (cv) = xsub;
1555 GENSUB_ARG = arg;
1556
1557 return newRV_noinc ((SV *)cv);
1558}
1559
1484/** Coro ********************************************************************/ 1560/** Coro ********************************************************************/
1485 1561
1486INLINE void 1562INLINE void
1487coro_enq (pTHX_ struct coro *coro) 1563coro_enq (pTHX_ struct coro *coro)
1488{ 1564{
… …
1531 ENTER; 1607 ENTER;
1532 SAVETMPS; 1608 SAVETMPS;
1533 1609
1534 PUSHMARK (SP); 1610 PUSHMARK (SP);
1535 PUTBACK; 1611 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD); 1612 call_sv (sv_hook, G_VOID | G_DISCARD);
1537 SPAGAIN;
1538 1613
1539 FREETMPS; 1614 FREETMPS;
1540 LEAVE; 1615 LEAVE;
1541 } 1616 }
1542 1617
… …
1550api_is_ready (pTHX_ SV *coro_sv) 1625api_is_ready (pTHX_ SV *coro_sv)
1551{ 1626{
1552 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1627 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1553} 1628}
1554 1629
1630/* expects to own a reference to next->hv */
1555INLINE void 1631INLINE void
1632prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1633{
1634 SV *prev_sv = SvRV (coro_current);
1635
1636 ta->prev = SvSTATE_hv (prev_sv);
1637 ta->next = next;
1638
1639 TRANSFER_CHECK (*ta);
1640
1641 SvRV_set (coro_current, (SV *)next->hv);
1642
1643 free_coro_mortal (aTHX);
1644 coro_mortal = prev_sv;
1645}
1646
1647static void
1556prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1648prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1557{ 1649{
1558 SV *prev_sv, *next_sv;
1559
1560 for (;;) 1650 for (;;)
1561 { 1651 {
1562 next_sv = coro_deq (aTHX); 1652 SV *next_sv = coro_deq (aTHX);
1563 1653
1564 /* nothing to schedule: call the idle handler */
1565 if (expect_false (!next_sv)) 1654 if (expect_true (next_sv))
1566 { 1655 {
1656 struct coro *next = SvSTATE_hv (next_sv);
1657
1658 /* cannot transfer to destroyed coros, skip and look for next */
1659 if (expect_false (next->flags & CF_DESTROYED))
1660 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1661 else
1662 {
1663 next->flags &= ~CF_READY;
1664 --coro_nready;
1665
1666 prepare_schedule_to (aTHX_ ta, next);
1667 break;
1668 }
1669 }
1670 else
1671 {
1672 /* nothing to schedule: call the idle handler */
1567 dSP; 1673 dSP;
1568 1674
1569 ENTER; 1675 ENTER;
1570 SAVETMPS; 1676 SAVETMPS;
1571 1677
1572 PUSHMARK (SP); 1678 PUSHMARK (SP);
1573 PUTBACK; 1679 PUTBACK;
1574 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1680 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1575 SPAGAIN;
1576 1681
1577 FREETMPS; 1682 FREETMPS;
1578 LEAVE; 1683 LEAVE;
1579 continue;
1580 } 1684 }
1581
1582 ta->next = SvSTATE_hv (next_sv);
1583
1584 /* cannot transfer to destroyed coros, skip and look for next */
1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1586 {
1587 SvREFCNT_dec (next_sv);
1588 /* coro_nready has already been taken care of by destroy */
1589 continue;
1590 }
1591
1592 --coro_nready;
1593 break;
1594 } 1685 }
1595
1596 /* free this only after the transfer */
1597 prev_sv = SvRV (coro_current);
1598 ta->prev = SvSTATE_hv (prev_sv);
1599 TRANSFER_CHECK (*ta);
1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1601 ta->next->flags &= ~CF_READY;
1602 SvRV_set (coro_current, next_sv);
1603
1604 free_coro_mortal (aTHX);
1605 coro_mortal = prev_sv;
1606} 1686}
1607 1687
1608INLINE void 1688INLINE void
1609prepare_cede (pTHX_ struct coro_transfer_args *ta) 1689prepare_cede (pTHX_ struct coro_transfer_args *ta)
1610{ 1690{
… …
1631{ 1711{
1632 struct coro_transfer_args ta; 1712 struct coro_transfer_args ta;
1633 1713
1634 prepare_schedule (aTHX_ &ta); 1714 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1); 1715 TRANSFER (ta, 1);
1716}
1717
1718static void
1719api_schedule_to (pTHX_ SV *coro_sv)
1720{
1721 struct coro_transfer_args ta;
1722 struct coro *next = SvSTATE (coro_sv);
1723
1724 SvREFCNT_inc_NN (coro_sv);
1725 prepare_schedule_to (aTHX_ &ta, next);
1636} 1726}
1637 1727
1638static int 1728static int
1639api_cede (pTHX) 1729api_cede (pTHX)
1640{ 1730{
… …
1669static void 1759static void
1670api_trace (pTHX_ SV *coro_sv, int flags) 1760api_trace (pTHX_ SV *coro_sv, int flags)
1671{ 1761{
1672 struct coro *coro = SvSTATE (coro_sv); 1762 struct coro *coro = SvSTATE (coro_sv);
1673 1763
1764 if (coro->flags & CF_RUNNING)
1765 croak ("cannot enable tracing on a running coroutine, caught");
1766
1674 if (flags & CC_TRACE) 1767 if (flags & CC_TRACE)
1675 { 1768 {
1676 if (!coro->cctx) 1769 if (!coro->cctx)
1677 coro->cctx = cctx_new_run (); 1770 coro->cctx = cctx_new_run ();
1678 else if (!(coro->cctx->flags & CC_TRACE)) 1771 else if (!(coro->cctx->flags & CC_TRACE))
1679 croak ("cannot enable tracing on coroutine with custom stack,"); 1772 croak ("cannot enable tracing on coroutine with custom stack, caught");
1680 1773
1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1774 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1682 } 1775 }
1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1776 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1684 { 1777 {
… …
1687 if (coro->flags & CF_RUNNING) 1780 if (coro->flags & CF_RUNNING)
1688 PL_runops = RUNOPS_DEFAULT; 1781 PL_runops = RUNOPS_DEFAULT;
1689 else 1782 else
1690 coro->slot->runops = RUNOPS_DEFAULT; 1783 coro->slot->runops = RUNOPS_DEFAULT;
1691 } 1784 }
1785}
1786
1787static void
1788coro_call_on_destroy (pTHX_ struct coro *coro)
1789{
1790 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1791 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1792
1793 if (on_destroyp)
1794 {
1795 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1796
1797 while (AvFILLp (on_destroy) >= 0)
1798 {
1799 dSP; /* don't disturb outer sp */
1800 SV *cb = av_pop (on_destroy);
1801
1802 PUSHMARK (SP);
1803
1804 if (statusp)
1805 {
1806 int i;
1807 AV *status = (AV *)SvRV (*statusp);
1808 EXTEND (SP, AvFILLp (status) + 1);
1809
1810 for (i = 0; i <= AvFILLp (status); ++i)
1811 PUSHs (AvARRAY (status)[i]);
1812 }
1813
1814 PUTBACK;
1815 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1816 }
1817 }
1818}
1819
1820static void
1821slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1822{
1823 int i;
1824 HV *hv = (HV *)SvRV (coro_current);
1825 AV *av = newAV ();
1826
1827 av_extend (av, items - 1);
1828 for (i = 0; i < items; ++i)
1829 av_push (av, SvREFCNT_inc_NN (arg [i]));
1830
1831 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1832
1833 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1834 api_ready (aTHX_ sv_manager);
1835
1836 frame->prepare = prepare_schedule;
1837 frame->check = slf_check_repeat;
1838}
1839
1840/*****************************************************************************/
1841/* async pool handler */
1842
1843static int
1844slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1845{
1846 HV *hv = (HV *)SvRV (coro_current);
1847 struct coro *coro = (struct coro *)frame->data;
1848
1849 if (!coro->invoke_cb)
1850 return 1; /* loop till we have invoke */
1851 else
1852 {
1853 hv_store (hv, "desc", sizeof ("desc") - 1,
1854 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1855
1856 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1857
1858 {
1859 dSP;
1860 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1861 PUTBACK;
1862 }
1863
1864 SvREFCNT_dec (GvAV (PL_defgv));
1865 GvAV (PL_defgv) = coro->invoke_av;
1866 coro->invoke_av = 0;
1867
1868 return 0;
1869 }
1870}
1871
1872static void
1873slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1874{
1875 HV *hv = (HV *)SvRV (coro_current);
1876 struct coro *coro = SvSTATE_hv ((SV *)hv);
1877
1878 if (expect_true (coro->saved_deffh))
1879 {
1880 /* subsequent iteration */
1881 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1882 coro->saved_deffh = 0;
1883
1884 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1885 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1886 {
1887 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1888 coro->invoke_av = newAV ();
1889
1890 frame->prepare = prepare_nop;
1891 }
1892 else
1893 {
1894 av_clear (GvAV (PL_defgv));
1895 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1896
1897 coro->prio = 0;
1898
1899 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1900 api_trace (aTHX_ coro_current, 0);
1901
1902 frame->prepare = prepare_schedule;
1903 av_push (av_async_pool, SvREFCNT_inc (hv));
1904 }
1905 }
1906 else
1907 {
1908 /* first iteration, simply fall through */
1909 frame->prepare = prepare_nop;
1910 }
1911
1912 frame->check = slf_check_pool_handler;
1913 frame->data = (void *)coro;
1914}
1915
1916/*****************************************************************************/
1917/* rouse callback */
1918
1919#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1920
1921static void
1922coro_rouse_callback (pTHX_ CV *cv)
1923{
1924 dXSARGS;
1925 SV *data = (SV *)GENSUB_ARG;
1926
1927 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1928 {
1929 /* first call, set args */
1930 AV *av = newAV ();
1931 SV *coro = SvRV (data);
1932
1933 SvRV_set (data, (SV *)av);
1934 api_ready (aTHX_ coro);
1935 SvREFCNT_dec (coro);
1936
1937 /* better take a full copy of the arguments */
1938 while (items--)
1939 av_store (av, items, newSVsv (ST (items)));
1940 }
1941
1942 XSRETURN_EMPTY;
1943}
1944
1945static int
1946slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1947{
1948 SV *data = (SV *)frame->data;
1949
1950 if (CORO_THROW)
1951 return 0;
1952
1953 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1954 return 1;
1955
1956 /* now push all results on the stack */
1957 {
1958 dSP;
1959 AV *av = (AV *)SvRV (data);
1960 int i;
1961
1962 EXTEND (SP, AvFILLp (av) + 1);
1963 for (i = 0; i <= AvFILLp (av); ++i)
1964 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1965
1966 /* we have stolen the elements, so ste length to zero and free */
1967 AvFILLp (av) = -1;
1968 av_undef (av);
1969
1970 PUTBACK;
1971 }
1972
1973 return 0;
1974}
1975
1976static void
1977slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1978{
1979 SV *cb;
1980
1981 if (items)
1982 cb = arg [0];
1983 else
1984 {
1985 struct coro *coro = SvSTATE_current;
1986
1987 if (!coro->rouse_cb)
1988 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1989
1990 cb = sv_2mortal (coro->rouse_cb);
1991 coro->rouse_cb = 0;
1992 }
1993
1994 if (!SvROK (cb)
1995 || SvTYPE (SvRV (cb)) != SVt_PVCV
1996 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1997 croak ("Coro::rouse_wait called with illegal callback argument,");
1998
1999 {
2000 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2001 SV *data = (SV *)GENSUB_ARG;
2002
2003 frame->data = (void *)data;
2004 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2005 frame->check = slf_check_rouse_wait;
2006 }
2007}
2008
2009static SV *
2010coro_new_rouse_cb (pTHX)
2011{
2012 HV *hv = (HV *)SvRV (coro_current);
2013 struct coro *coro = SvSTATE_hv (hv);
2014 SV *data = newRV_inc ((SV *)hv);
2015 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2016
2017 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2018 SvREFCNT_dec (data); /* magicext increases the refcount */
2019
2020 SvREFCNT_dec (coro->rouse_cb);
2021 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2022
2023 return cb;
2024}
2025
2026/*****************************************************************************/
2027/* schedule-like-function opcode (SLF) */
2028
2029static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2030static const CV *slf_cv;
2031static SV **slf_argv;
2032static int slf_argc, slf_arga; /* count, allocated */
2033static I32 slf_ax; /* top of stack, for restore */
2034
2035/* this restores the stack in the case we patched the entersub, to */
2036/* recreate the stack frame as perl will on following calls */
2037/* since entersub cleared the stack */
2038static OP *
2039pp_restore (pTHX)
2040{
2041 int i;
2042 SV **SP = PL_stack_base + slf_ax;
2043
2044 PUSHMARK (SP);
2045
2046 EXTEND (SP, slf_argc + 1);
2047
2048 for (i = 0; i < slf_argc; ++i)
2049 PUSHs (sv_2mortal (slf_argv [i]));
2050
2051 PUSHs ((SV *)CvGV (slf_cv));
2052
2053 RETURNOP (slf_restore.op_first);
2054}
2055
2056static void
2057slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2058{
2059 SV **arg = (SV **)slf_frame.data;
2060
2061 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2062}
2063
2064static void
2065slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2066{
2067 if (items != 2)
2068 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2069
2070 frame->prepare = slf_prepare_transfer;
2071 frame->check = slf_check_nop;
2072 frame->data = (void *)arg; /* let's hope it will stay valid */
2073}
2074
2075static void
2076slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2077{
2078 frame->prepare = prepare_schedule;
2079 frame->check = slf_check_nop;
2080}
2081
2082static void
2083slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2084{
2085 struct coro *next = (struct coro *)slf_frame.data;
2086
2087 SvREFCNT_inc_NN (next->hv);
2088 prepare_schedule_to (aTHX_ ta, next);
2089}
2090
2091static void
2092slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2093{
2094 if (!items)
2095 croak ("Coro::schedule_to expects a coroutine argument, caught");
2096
2097 frame->data = (void *)SvSTATE (arg [0]);
2098 frame->prepare = slf_prepare_schedule_to;
2099 frame->check = slf_check_nop;
2100}
2101
2102static void
2103slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2104{
2105 api_ready (aTHX_ SvRV (coro_current));
2106
2107 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2108}
2109
2110static void
2111slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2112{
2113 frame->prepare = prepare_cede;
2114 frame->check = slf_check_nop;
2115}
2116
2117static void
2118slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2119{
2120 frame->prepare = prepare_cede_notself;
2121 frame->check = slf_check_nop;
2122}
2123
2124/*
2125 * these not obviously related functions are all rolled into one
2126 * function to increase chances that they all will call transfer with the same
2127 * stack offset
2128 * SLF stands for "schedule-like-function".
2129 */
2130static OP *
2131pp_slf (pTHX)
2132{
2133 I32 checkmark; /* mark SP to see how many elements check has pushed */
2134
2135 /* set up the slf frame, unless it has already been set-up */
2136 /* the latter happens when a new coro has been started */
2137 /* or when a new cctx was attached to an existing coroutine */
2138 if (expect_true (!slf_frame.prepare))
2139 {
2140 /* first iteration */
2141 dSP;
2142 SV **arg = PL_stack_base + TOPMARK + 1;
2143 int items = SP - arg; /* args without function object */
2144 SV *gv = *sp;
2145
2146 /* do a quick consistency check on the "function" object, and if it isn't */
2147 /* for us, divert to the real entersub */
2148 if (SvTYPE (gv) != SVt_PVGV
2149 || !GvCV (gv)
2150 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2151 return PL_ppaddr[OP_ENTERSUB](aTHX);
2152
2153 if (!(PL_op->op_flags & OPf_STACKED))
2154 {
2155 /* ampersand-form of call, use @_ instead of stack */
2156 AV *av = GvAV (PL_defgv);
2157 arg = AvARRAY (av);
2158 items = AvFILLp (av) + 1;
2159 }
2160
2161 /* now call the init function, which needs to set up slf_frame */
2162 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2163 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2164
2165 /* pop args */
2166 SP = PL_stack_base + POPMARK;
2167
2168 PUTBACK;
2169 }
2170
2171 /* now that we have a slf_frame, interpret it! */
2172 /* we use a callback system not to make the code needlessly */
2173 /* complicated, but so we can run multiple perl coros from one cctx */
2174
2175 do
2176 {
2177 struct coro_transfer_args ta;
2178
2179 slf_frame.prepare (aTHX_ &ta);
2180 TRANSFER (ta, 0);
2181
2182 checkmark = PL_stack_sp - PL_stack_base;
2183 }
2184 while (slf_frame.check (aTHX_ &slf_frame));
2185
2186 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2187
2188 /* exception handling */
2189 if (expect_false (CORO_THROW))
2190 {
2191 SV *exception = sv_2mortal (CORO_THROW);
2192
2193 CORO_THROW = 0;
2194 sv_setsv (ERRSV, exception);
2195 croak (0);
2196 }
2197
2198 /* return value handling - mostly like entersub */
2199 /* make sure we put something on the stack in scalar context */
2200 if (GIMME_V == G_SCALAR)
2201 {
2202 dSP;
2203 SV **bot = PL_stack_base + checkmark;
2204
2205 if (sp == bot) /* too few, push undef */
2206 bot [1] = &PL_sv_undef;
2207 else if (sp != bot + 1) /* too many, take last one */
2208 bot [1] = *sp;
2209
2210 SP = bot + 1;
2211
2212 PUTBACK;
2213 }
2214
2215 return NORMAL;
2216}
2217
2218static void
2219api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2220{
2221 int i;
2222 SV **arg = PL_stack_base + ax;
2223 int items = PL_stack_sp - arg + 1;
2224
2225 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2226
2227 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2228 && PL_op->op_ppaddr != pp_slf)
2229 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2230
2231 CvFLAGS (cv) |= CVf_SLF;
2232 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2233 slf_cv = cv;
2234
2235 /* we patch the op, and then re-run the whole call */
2236 /* we have to put the same argument on the stack for this to work */
2237 /* and this will be done by pp_restore */
2238 slf_restore.op_next = (OP *)&slf_restore;
2239 slf_restore.op_type = OP_CUSTOM;
2240 slf_restore.op_ppaddr = pp_restore;
2241 slf_restore.op_first = PL_op;
2242
2243 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2244
2245 if (PL_op->op_flags & OPf_STACKED)
2246 {
2247 if (items > slf_arga)
2248 {
2249 slf_arga = items;
2250 free (slf_argv);
2251 slf_argv = malloc (slf_arga * sizeof (SV *));
2252 }
2253
2254 slf_argc = items;
2255
2256 for (i = 0; i < items; ++i)
2257 slf_argv [i] = SvREFCNT_inc (arg [i]);
2258 }
2259 else
2260 slf_argc = 0;
2261
2262 PL_op->op_ppaddr = pp_slf;
2263 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2264
2265 PL_op = (OP *)&slf_restore;
1692} 2266}
1693 2267
1694/*****************************************************************************/ 2268/*****************************************************************************/
1695/* PerlIO::cede */ 2269/* PerlIO::cede */
1696 2270
… …
1765 PerlIOBuf_get_cnt, 2339 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt, 2340 PerlIOBuf_set_ptrcnt,
1767}; 2341};
1768 2342
1769/*****************************************************************************/ 2343/*****************************************************************************/
2344/* Coro::Semaphore & Coro::Signal */
1770 2345
1771static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1772static const CV *slf_cv;
1773static SV *slf_arg0;
1774static SV *slf_arg1;
1775static SV *slf_arg2;
1776static I32 slf_ax; /* top of stack, for restore */
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP * 2346static SV *
1782pp_restore (pTHX) 2347coro_waitarray_new (pTHX_ int count)
1783{ 2348{
1784 SV **SP = PL_stack_base + slf_ax; 2349 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2350 AV *av = newAV ();
2351 SV **ary;
1785 2352
1786 PUSHMARK (SP); 2353 /* unfortunately, building manually saves memory */
2354 Newx (ary, 2, SV *);
2355 AvALLOC (av) = ary;
2356 /*AvARRAY (av) = ary;*/
2357 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2358 AvMAX (av) = 1;
2359 AvFILLp (av) = 0;
2360 ary [0] = newSViv (count);
1787 2361
1788 EXTEND (SP, 3); 2362 return newRV_noinc ((SV *)av);
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1792 PUSHs ((SV *)CvGV (slf_cv));
1793
1794 RETURNOP (slf_restore.op_first);
1795} 2363}
1796 2364
1797static void 2365/* semaphore */
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 {
1928 dSP;
1929 SV **bot = PL_stack_base + checkmark;
1930 int gimme = GIMME_V;
1931
1932 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1933
1934 /* make sure we put something on the stack in scalar context */
1935 if (gimme == G_SCALAR)
1936 {
1937 if (sp == bot)
1938 XPUSHs (&PL_sv_undef);
1939
1940 SP = bot + 1;
1941 }
1942
1943 PUTBACK;
1944 }
1945
1946 {
1947 struct coro *coro = SvSTATE_current;
1948
1949 if (expect_false (coro->throw))
1950 {
1951 SV *exception = sv_2mortal (coro->throw);
1952
1953 coro->throw = 0;
1954 sv_setsv (ERRSV, exception);
1955 croak (0);
1956 }
1957 }
1958
1959 return NORMAL;
1960}
1961
1962static void
1963api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1964{
1965 SV **arg = PL_stack_base + ax;
1966 int items = PL_stack_sp - arg + 1;
1967
1968 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1969
1970 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1971 && PL_op->op_ppaddr != pp_slf)
1972 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1973
1974#if 0
1975 if (items > 3)
1976 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1977#endif
1978
1979 CvFLAGS (cv) |= CVf_SLF;
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_CUSTOM;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1992 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1993 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1994 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1995
1996 PL_op->op_ppaddr = pp_slf;
1997 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1998
1999 PL_op = (OP *)&slf_restore;
2000}
2001
2002/*****************************************************************************/
2003 2366
2004static void 2367static void
2005coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2368coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2006{ 2369{
2007 SV *count_sv = AvARRAY (av)[0]; 2370 SV *count_sv = AvARRAY (av)[0];
… …
2019 AvARRAY (av)[0] = AvARRAY (av)[1]; 2382 AvARRAY (av)[0] = AvARRAY (av)[1];
2020 AvARRAY (av)[1] = count_sv; 2383 AvARRAY (av)[1] = count_sv;
2021 cb = av_shift (av); 2384 cb = av_shift (av);
2022 2385
2023 if (SvOBJECT (cb)) 2386 if (SvOBJECT (cb))
2387 {
2024 api_ready (aTHX_ cb); 2388 api_ready (aTHX_ cb);
2025 else 2389 --count;
2026 croak ("callbacks not yet supported"); 2390 }
2391 else if (SvTYPE (cb) == SVt_PVCV)
2392 {
2393 dSP;
2394 PUSHMARK (SP);
2395 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2396 PUTBACK;
2397 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2398 }
2027 2399
2028 SvREFCNT_dec (cb); 2400 SvREFCNT_dec (cb);
2029
2030 --count;
2031 } 2401 }
2032} 2402}
2033 2403
2034static void 2404static void
2035coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2405coro_semaphore_on_destroy (pTHX_ struct coro *coro)
… …
2037 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2407 /* call $sem->adjust (0) to possibly wake up some other waiters */
2038 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2408 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2039} 2409}
2040 2410
2041static int 2411static int
2042slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2412slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2043{ 2413{
2044 AV *av = (AV *)frame->data; 2414 AV *av = (AV *)frame->data;
2045 SV *count_sv = AvARRAY (av)[0]; 2415 SV *count_sv = AvARRAY (av)[0];
2046 2416
2417 /* if we are about to throw, don't actually acquire the lock, just throw */
2418 if (CORO_THROW)
2419 return 0;
2047 if (SvIVX (count_sv) > 0) 2420 else if (SvIVX (count_sv) > 0)
2048 { 2421 {
2049 SvSTATE_current->on_destroy = 0; 2422 SvSTATE_current->on_destroy = 0;
2423
2424 if (acquire)
2050 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2425 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2426 else
2427 coro_semaphore_adjust (aTHX_ av, 0);
2428
2051 return 0; 2429 return 0;
2052 } 2430 }
2053 else 2431 else
2054 { 2432 {
2055 int i; 2433 int i;
… …
2064 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2442 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2065 return 1; 2443 return 1;
2066 } 2444 }
2067} 2445}
2068 2446
2069static void 2447static int
2448slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2449{
2450 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2451}
2452
2453static int
2454slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2455{
2456 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2457}
2458
2459static void
2070slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2460slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2071{ 2461{
2072 AV *av = (AV *)SvRV (arg [0]); 2462 AV *av = (AV *)SvRV (arg [0]);
2073 2463
2074 if (SvIVX (AvARRAY (av)[0]) > 0) 2464 if (SvIVX (AvARRAY (av)[0]) > 0)
2075 { 2465 {
2076 frame->data = (void *)av; 2466 frame->data = (void *)av;
2077 frame->prepare = prepare_nop; 2467 frame->prepare = prepare_nop;
2078 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2079 } 2468 }
2080 else 2469 else
2081 { 2470 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2471 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083 2472
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2473 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule; 2474 frame->prepare = prepare_schedule;
2086 2475
2087 /* to avoid race conditions when a woken-up coro gets terminated */ 2476 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2477 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 assert (!SvSTATE_current->on_destroy);//D
2090 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2478 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2091 } 2479 }
2480}
2092 2481
2482static void
2483slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2484{
2485 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2093 frame->check = slf_check_semaphore_down; 2486 frame->check = slf_check_semaphore_down;
2487}
2094 2488
2489static void
2490slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2491{
2492 if (items >= 2)
2493 {
2494 /* callback form */
2495 AV *av = (AV *)SvRV (arg [0]);
2496 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2497
2498 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2499
2500 if (SvIVX (AvARRAY (av)[0]) > 0)
2501 coro_semaphore_adjust (aTHX_ av, 0);
2502
2503 frame->prepare = prepare_nop;
2504 frame->check = slf_check_nop;
2505 }
2506 else
2507 {
2508 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2509 frame->check = slf_check_semaphore_wait;
2510 }
2511}
2512
2513/* signal */
2514
2515static void
2516coro_signal_wake (pTHX_ AV *av, int count)
2517{
2518 SvIVX (AvARRAY (av)[0]) = 0;
2519
2520 /* now signal count waiters */
2521 while (count > 0 && AvFILLp (av) > 0)
2522 {
2523 SV *cb;
2524
2525 /* swap first two elements so we can shift a waiter */
2526 cb = AvARRAY (av)[0];
2527 AvARRAY (av)[0] = AvARRAY (av)[1];
2528 AvARRAY (av)[1] = cb;
2529
2530 cb = av_shift (av);
2531
2532 api_ready (aTHX_ cb);
2533 sv_setiv (cb, 0); /* signal waiter */
2534 SvREFCNT_dec (cb);
2535
2536 --count;
2537 }
2538}
2539
2540static int
2541slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2542{
2543 /* if we are about to throw, also stop waiting */
2544 return SvROK ((SV *)frame->data) && !CORO_THROW;
2545}
2546
2547static void
2548slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2549{
2550 AV *av = (AV *)SvRV (arg [0]);
2551
2552 if (SvIVX (AvARRAY (av)[0]))
2553 {
2554 SvIVX (AvARRAY (av)[0]) = 0;
2555 frame->prepare = prepare_nop;
2556 frame->check = slf_check_nop;
2557 }
2558 else
2559 {
2560 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2561
2562 av_push (av, waiter);
2563
2564 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2565 frame->prepare = prepare_schedule;
2566 frame->check = slf_check_signal_wait;
2567 }
2095} 2568}
2096 2569
2097/*****************************************************************************/ 2570/*****************************************************************************/
2571/* Coro::AIO */
2098 2572
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2573#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2100 2574
2101/* create a closure from XS, returns a code reference */ 2575/* helper storage struct */
2102/* the arg can be accessed via GENSUB_ARG from the callback */ 2576struct io_state
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{ 2577{
2107 CV *cv = (CV *)NEWSV (0, 0); 2578 int errorno;
2579 I32 laststype; /* U16 in 5.10.0 */
2580 int laststatval;
2581 Stat_t statcache;
2582};
2108 2583
2584static void
2585coro_aio_callback (pTHX_ CV *cv)
2586{
2587 dXSARGS;
2588 AV *state = (AV *)GENSUB_ARG;
2589 SV *coro = av_pop (state);
2590 SV *data_sv = newSV (sizeof (struct io_state));
2591
2592 av_extend (state, items - 1);
2593
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 2594 sv_upgrade (data_sv, SVt_PV);
2595 SvCUR_set (data_sv, sizeof (struct io_state));
2596 SvPOK_only (data_sv);
2110 2597
2111 CvANON_on (cv); 2598 {
2112 CvISXSUB_on (cv); 2599 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115 2600
2116 return newRV_noinc ((SV *)cv); 2601 data->errorno = errno;
2602 data->laststype = PL_laststype;
2603 data->laststatval = PL_laststatval;
2604 data->statcache = PL_statcache;
2605 }
2606
2607 /* now build the result vector out of all the parameters and the data_sv */
2608 {
2609 int i;
2610
2611 for (i = 0; i < items; ++i)
2612 av_push (state, SvREFCNT_inc_NN (ST (i)));
2613 }
2614
2615 av_push (state, data_sv);
2616
2617 api_ready (aTHX_ coro);
2618 SvREFCNT_dec (coro);
2619 SvREFCNT_dec ((AV *)state);
2620}
2621
2622static int
2623slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2624{
2625 AV *state = (AV *)frame->data;
2626
2627 /* if we are about to throw, return early */
2628 /* this does not cancel the aio request, but at least */
2629 /* it quickly returns */
2630 if (CORO_THROW)
2631 return 0;
2632
2633 /* one element that is an RV? repeat! */
2634 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2635 return 1;
2636
2637 /* restore status */
2638 {
2639 SV *data_sv = av_pop (state);
2640 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2641
2642 errno = data->errorno;
2643 PL_laststype = data->laststype;
2644 PL_laststatval = data->laststatval;
2645 PL_statcache = data->statcache;
2646
2647 SvREFCNT_dec (data_sv);
2648 }
2649
2650 /* push result values */
2651 {
2652 dSP;
2653 int i;
2654
2655 EXTEND (SP, AvFILLp (state) + 1);
2656 for (i = 0; i <= AvFILLp (state); ++i)
2657 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2658
2659 PUTBACK;
2660 }
2661
2662 return 0;
2663}
2664
2665static void
2666slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2667{
2668 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2669 SV *coro_hv = SvRV (coro_current);
2670 struct coro *coro = SvSTATE_hv (coro_hv);
2671
2672 /* put our coroutine id on the state arg */
2673 av_push (state, SvREFCNT_inc_NN (coro_hv));
2674
2675 /* first see whether we have a non-zero priority and set it as AIO prio */
2676 if (coro->prio)
2677 {
2678 dSP;
2679
2680 static SV *prio_cv;
2681 static SV *prio_sv;
2682
2683 if (expect_false (!prio_cv))
2684 {
2685 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2686 prio_sv = newSViv (0);
2687 }
2688
2689 PUSHMARK (SP);
2690 sv_setiv (prio_sv, coro->prio);
2691 XPUSHs (prio_sv);
2692
2693 PUTBACK;
2694 call_sv (prio_cv, G_VOID | G_DISCARD);
2695 }
2696
2697 /* now call the original request */
2698 {
2699 dSP;
2700 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2701 int i;
2702
2703 PUSHMARK (SP);
2704
2705 /* first push all args to the stack */
2706 EXTEND (SP, items + 1);
2707
2708 for (i = 0; i < items; ++i)
2709 PUSHs (arg [i]);
2710
2711 /* now push the callback closure */
2712 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2713
2714 /* now call the AIO function - we assume our request is uncancelable */
2715 PUTBACK;
2716 call_sv ((SV *)req, G_VOID | G_DISCARD);
2717 }
2718
2719 /* now that the requets is going, we loop toll we have a result */
2720 frame->data = (void *)state;
2721 frame->prepare = prepare_schedule;
2722 frame->check = slf_check_aio_req;
2723}
2724
2725static void
2726coro_aio_req_xs (pTHX_ CV *cv)
2727{
2728 dXSARGS;
2729
2730 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2731
2732 XSRETURN_EMPTY;
2117} 2733}
2118 2734
2119/*****************************************************************************/ 2735/*****************************************************************************/
2736
2737#if CORO_CLONE
2738# include "clone.c"
2739#endif
2120 2740
2121MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2741MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2122 2742
2123PROTOTYPES: DISABLE 2743PROTOTYPES: DISABLE
2124 2744
… …
2129 coro_thx = PERL_GET_CONTEXT; 2749 coro_thx = PERL_GET_CONTEXT;
2130# endif 2750# endif
2131#endif 2751#endif
2132 BOOT_PAGESIZE; 2752 BOOT_PAGESIZE;
2133 2753
2754 cctx_current = cctx_new_empty ();
2755
2134 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2756 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2135 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2757 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2136 2758
2137 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2759 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2138 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2760 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2157 2779
2158 { 2780 {
2159 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2781 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2160 2782
2161 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2783 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2162 hv_store_ent (PL_custom_op_names, slf, 2784 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2163 newSVpv ("coro_slf", 0), 0);
2164 2785
2165 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2786 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2166 hv_store_ent (PL_custom_op_descs, slf, 2787 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2167 newSVpv ("coro schedule like function", 0), 0);
2168 } 2788 }
2169 2789
2170 coroapi.ver = CORO_API_VERSION; 2790 coroapi.ver = CORO_API_VERSION;
2171 coroapi.rev = CORO_API_REVISION; 2791 coroapi.rev = CORO_API_REVISION;
2172 2792
… …
2191 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2811 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2192} 2812}
2193 2813
2194SV * 2814SV *
2195new (char *klass, ...) 2815new (char *klass, ...)
2816 ALIAS:
2817 Coro::new = 1
2196 CODE: 2818 CODE:
2197{ 2819{
2198 struct coro *coro; 2820 struct coro *coro;
2199 MAGIC *mg; 2821 MAGIC *mg;
2200 HV *hv; 2822 HV *hv;
2823 CV *cb;
2201 int i; 2824 int i;
2825
2826 if (items > 1)
2827 {
2828 cb = coro_sv_2cv (aTHX_ ST (1));
2829
2830 if (!ix)
2831 {
2832 if (CvISXSUB (cb))
2833 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2834
2835 if (!CvROOT (cb))
2836 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2837 }
2838 }
2202 2839
2203 Newz (0, coro, 1, struct coro); 2840 Newz (0, coro, 1, struct coro);
2204 coro->args = newAV (); 2841 coro->args = newAV ();
2205 coro->flags = CF_NEW; 2842 coro->flags = CF_NEW;
2206 2843
… …
2211 coro->hv = hv = newHV (); 2848 coro->hv = hv = newHV ();
2212 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2849 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2213 mg->mg_flags |= MGf_DUP; 2850 mg->mg_flags |= MGf_DUP;
2214 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2851 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2215 2852
2853 if (items > 1)
2854 {
2216 av_extend (coro->args, items - 1); 2855 av_extend (coro->args, items - 1 + ix - 1);
2856
2857 if (ix)
2858 {
2859 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2860 cb = cv_coro_run;
2861 }
2862
2863 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2864
2217 for (i = 1; i < items; i++) 2865 for (i = 2; i < items; i++)
2218 av_push (coro->args, newSVsv (ST (i))); 2866 av_push (coro->args, newSVsv (ST (i)));
2867 }
2219} 2868}
2220 OUTPUT: 2869 OUTPUT:
2221 RETVAL 2870 RETVAL
2222
2223void
2224_set_stacklevel (...)
2225 CODE:
2226 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2227 2871
2228void 2872void
2229transfer (...) 2873transfer (...)
2230 PROTOTYPE: $$ 2874 PROTOTYPE: $$
2231 CODE: 2875 CODE:
… …
2241void 2885void
2242_exit (int code) 2886_exit (int code)
2243 PROTOTYPE: $ 2887 PROTOTYPE: $
2244 CODE: 2888 CODE:
2245 _exit (code); 2889 _exit (code);
2890
2891SV *
2892clone (Coro::State coro)
2893 CODE:
2894{
2895#if CORO_CLONE
2896 struct coro *ncoro = coro_clone (coro);
2897 MAGIC *mg;
2898 /* TODO: too much duplication */
2899 ncoro->hv = newHV ();
2900 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2901 mg->mg_flags |= MGf_DUP;
2902 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2903#else
2904 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2905#endif
2906}
2907 OUTPUT:
2908 RETVAL
2246 2909
2247int 2910int
2248cctx_stacksize (int new_stacksize = 0) 2911cctx_stacksize (int new_stacksize = 0)
2249 PROTOTYPE: ;$ 2912 PROTOTYPE: ;$
2250 CODE: 2913 CODE:
… …
2355 3018
2356void 3019void
2357throw (Coro::State self, SV *throw = &PL_sv_undef) 3020throw (Coro::State self, SV *throw = &PL_sv_undef)
2358 PROTOTYPE: $;$ 3021 PROTOTYPE: $;$
2359 CODE: 3022 CODE:
3023{
3024 struct coro *current = SvSTATE_current;
3025 SV **throwp = self == current ? &CORO_THROW : &self->except;
2360 SvREFCNT_dec (self->throw); 3026 SvREFCNT_dec (*throwp);
2361 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3027 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3028}
2362 3029
2363void 3030void
2364api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3031api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2365 PROTOTYPE: $;$ 3032 PROTOTYPE: $;$
2366 C_ARGS: aTHX_ coro, flags 3033 C_ARGS: aTHX_ coro, flags
2367 3034
2368SV * 3035SV *
2369has_cctx (Coro::State coro) 3036has_cctx (Coro::State coro)
2370 PROTOTYPE: $ 3037 PROTOTYPE: $
2371 CODE: 3038 CODE:
2372 RETVAL = boolSV (!!coro->cctx); 3039 /* maybe manage the running flag differently */
3040 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2373 OUTPUT: 3041 OUTPUT:
2374 RETVAL 3042 RETVAL
2375 3043
2376int 3044int
2377is_traced (Coro::State coro) 3045is_traced (Coro::State coro)
… …
2397 3065
2398void 3066void
2399force_cctx () 3067force_cctx ()
2400 PROTOTYPE: 3068 PROTOTYPE:
2401 CODE: 3069 CODE:
2402 SvSTATE_current->cctx->idle_sp = 0; 3070 cctx_current->idle_sp = 0;
2403 3071
2404void 3072void
2405swap_defsv (Coro::State self) 3073swap_defsv (Coro::State self)
2406 PROTOTYPE: $ 3074 PROTOTYPE: $
2407 ALIAS: 3075 ALIAS:
… …
2415 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3083 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2416 3084
2417 SV *tmp = *src; *src = *dst; *dst = tmp; 3085 SV *tmp = *src; *src = *dst; *dst = tmp;
2418 } 3086 }
2419 3087
3088
2420MODULE = Coro::State PACKAGE = Coro 3089MODULE = Coro::State PACKAGE = Coro
2421 3090
2422BOOT: 3091BOOT:
2423{ 3092{
2424 int i; 3093 int i;
2425 3094
2426 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2427 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3095 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2428 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3096 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2429 3097 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3098 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2430 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3099 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2431 SvREADONLY_on (coro_current); 3100 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3101 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3102 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3103
3104 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3105 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3106 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3107 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2432 3108
2433 coro_stash = gv_stashpv ("Coro", TRUE); 3109 coro_stash = gv_stashpv ("Coro", TRUE);
2434 3110
2435 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3111 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2436 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3112 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2444 3120
2445 { 3121 {
2446 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3122 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2447 3123
2448 coroapi.schedule = api_schedule; 3124 coroapi.schedule = api_schedule;
3125 coroapi.schedule_to = api_schedule_to;
2449 coroapi.cede = api_cede; 3126 coroapi.cede = api_cede;
2450 coroapi.cede_notself = api_cede_notself; 3127 coroapi.cede_notself = api_cede_notself;
2451 coroapi.ready = api_ready; 3128 coroapi.ready = api_ready;
2452 coroapi.is_ready = api_is_ready; 3129 coroapi.is_ready = api_is_ready;
2453 coroapi.nready = coro_nready; 3130 coroapi.nready = coro_nready;
2454 coroapi.current = coro_current; 3131 coroapi.current = coro_current;
2455 3132
2456 GCoroAPI = &coroapi; 3133 /*GCoroAPI = &coroapi;*/
2457 sv_setiv (sv, (IV)&coroapi); 3134 sv_setiv (sv, (IV)&coroapi);
2458 SvREADONLY_on (sv); 3135 SvREADONLY_on (sv);
2459 } 3136 }
2460} 3137}
3138
3139void
3140terminate (...)
3141 CODE:
3142 CORO_EXECUTE_SLF_XS (slf_init_terminate);
2461 3143
2462void 3144void
2463schedule (...) 3145schedule (...)
2464 CODE: 3146 CODE:
2465 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3147 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2466 3148
2467void 3149void
3150schedule_to (...)
3151 CODE:
3152 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3153
3154void
3155cede_to (...)
3156 CODE:
3157 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3158
3159void
2468cede (...) 3160cede (...)
2469 CODE: 3161 CODE:
2470 CORO_EXECUTE_SLF_XS (slf_init_cede); 3162 CORO_EXECUTE_SLF_XS (slf_init_cede);
2471 3163
2472void 3164void
2473cede_notself (...) 3165cede_notself (...)
2474 CODE: 3166 CODE:
2475 CORO_EXECUTE_SLF_XS (slf_init_cede_notself); 3167 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3168
3169void
3170_cancel (Coro::State self)
3171 CODE:
3172 coro_state_destroy (aTHX_ self);
3173 coro_call_on_destroy (aTHX_ self);
2476 3174
2477void 3175void
2478_set_current (SV *current) 3176_set_current (SV *current)
2479 PROTOTYPE: $ 3177 PROTOTYPE: $
2480 CODE: 3178 CODE:
… …
2525 CODE: 3223 CODE:
2526 RETVAL = coro_nready; 3224 RETVAL = coro_nready;
2527 OUTPUT: 3225 OUTPUT:
2528 RETVAL 3226 RETVAL
2529 3227
2530# for async_pool speedup
2531void 3228void
2532_pool_1 (SV *cb) 3229_pool_handler (...)
2533 CODE: 3230 CODE:
2534{ 3231 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv ((SV *)hv);
2537 AV *defav = GvAV (PL_defgv);
2538 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2539 AV *invoke_av;
2540 int i, len;
2541
2542 if (!invoke)
2543 {
2544 SV *old = PL_diehook;
2545 PL_diehook = 0;
2546 SvREFCNT_dec (old);
2547 croak ("\3async_pool terminate\2\n");
2548 }
2549
2550 SvREFCNT_dec (coro->saved_deffh);
2551 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2552
2553 hv_store (hv, "desc", sizeof ("desc") - 1,
2554 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2555
2556 invoke_av = (AV *)SvRV (invoke);
2557 len = av_len (invoke_av);
2558
2559 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2560
2561 if (len > 0)
2562 {
2563 av_fill (defav, len - 1);
2564 for (i = 0; i < len; ++i)
2565 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2566 }
2567}
2568 3232
2569void 3233void
2570_pool_2 (SV *cb) 3234async_pool (SV *cv, ...)
2571 CODE:
2572{
2573 struct coro *coro = SvSTATE_current;
2574
2575 sv_setsv (cb, &PL_sv_undef);
2576
2577 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2578 coro->saved_deffh = 0;
2579
2580 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2581 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2582 {
2583 SV *old = PL_diehook;
2584 PL_diehook = 0;
2585 SvREFCNT_dec (old);
2586 croak ("\3async_pool terminate\2\n");
2587 }
2588
2589 av_clear (GvAV (PL_defgv));
2590 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2591 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2592
2593 coro->prio = 0;
2594
2595 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2596 api_trace (aTHX_ coro_current, 0);
2597
2598 av_push (av_async_pool, newSVsv (coro_current));
2599}
2600
2601
2602MODULE = Coro::State PACKAGE = Coro::AIO
2603
2604void
2605_get_state (SV *self)
2606 PROTOTYPE: $ 3235 PROTOTYPE: &@
2607 PPCODE: 3236 PPCODE:
2608{ 3237{
2609 AV *defav = GvAV (PL_defgv); 3238 HV *hv = (HV *)av_pop (av_async_pool);
2610 AV *av = newAV (); 3239 AV *av = newAV ();
3240 SV *cb = ST (0);
2611 int i; 3241 int i;
2612 SV *data_sv = newSV (sizeof (struct io_state));
2613 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2614 SvCUR_set (data_sv, sizeof (struct io_state));
2615 SvPOK_only (data_sv);
2616 3242
2617 data->errorno = errno; 3243 av_extend (av, items - 2);
2618 data->laststype = PL_laststype; 3244 for (i = 1; i < items; ++i)
2619 data->laststatval = PL_laststatval;
2620 data->statcache = PL_statcache;
2621
2622 av_extend (av, AvFILLp (defav) + 1 + 1);
2623
2624 for (i = 0; i <= AvFILLp (defav); ++i)
2625 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3245 av_push (av, SvREFCNT_inc_NN (ST (i)));
2626 3246
2627 av_push (av, data_sv); 3247 if ((SV *)hv == &PL_sv_undef)
2628
2629 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2630
2631 api_ready (aTHX_ self);
2632}
2633
2634void
2635_set_state (SV *state)
2636 PROTOTYPE: $
2637 PPCODE:
2638{
2639 AV *av = (AV *)SvRV (state);
2640 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2641 int i;
2642
2643 errno = data->errorno;
2644 PL_laststype = data->laststype;
2645 PL_laststatval = data->laststatval;
2646 PL_statcache = data->statcache;
2647
2648 EXTEND (SP, AvFILLp (av));
2649 for (i = 0; i < AvFILLp (av); ++i)
2650 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2651}
2652
2653
2654MODULE = Coro::State PACKAGE = Coro::AnyEvent
2655
2656BOOT:
2657 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2658
2659void
2660_schedule (...)
2661 CODE:
2662{
2663 static int incede;
2664
2665 api_cede_notself (aTHX);
2666
2667 ++incede;
2668 while (coro_nready >= incede && api_cede (aTHX))
2669 ;
2670
2671 sv_setsv (sv_activity, &PL_sv_undef);
2672 if (coro_nready >= incede)
2673 { 3248 {
2674 PUSHMARK (SP); 3249 PUSHMARK (SP);
3250 EXTEND (SP, 2);
3251 PUSHs (sv_Coro);
3252 PUSHs ((SV *)cv_pool_handler);
2675 PUTBACK; 3253 PUTBACK;
2676 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3254 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2677 SPAGAIN; 3255 SPAGAIN;
3256
3257 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2678 } 3258 }
2679 3259
2680 --incede; 3260 {
3261 struct coro *coro = SvSTATE_hv (hv);
3262
3263 assert (!coro->invoke_cb);
3264 assert (!coro->invoke_av);
3265 coro->invoke_cb = SvREFCNT_inc (cb);
3266 coro->invoke_av = av;
3267 }
3268
3269 api_ready (aTHX_ (SV *)hv);
3270
3271 if (GIMME_V != G_VOID)
3272 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3273 else
3274 SvREFCNT_dec (hv);
2681} 3275}
3276
3277SV *
3278rouse_cb ()
3279 PROTOTYPE:
3280 CODE:
3281 RETVAL = coro_new_rouse_cb (aTHX);
3282 OUTPUT:
3283 RETVAL
3284
3285void
3286rouse_wait (...)
3287 PROTOTYPE: ;$
3288 PPCODE:
3289 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2682 3290
2683 3291
2684MODULE = Coro::State PACKAGE = PerlIO::cede 3292MODULE = Coro::State PACKAGE = PerlIO::cede
2685 3293
2686BOOT: 3294BOOT:
2687 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3295 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2688 3296
3297
2689MODULE = Coro::State PACKAGE = Coro::Semaphore 3298MODULE = Coro::State PACKAGE = Coro::Semaphore
2690 3299
2691SV * 3300SV *
2692new (SV *klass, SV *count_ = 0) 3301new (SV *klass, SV *count = 0)
2693 CODE: 3302 CODE:
2694{ 3303 RETVAL = sv_bless (
2695 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3304 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2696 AV *av = newAV (); 3305 GvSTASH (CvGV (cv))
2697 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3306 );
2698 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3307 OUTPUT:
2699} 3308 RETVAL
3309
3310# helper for Coro::Channel
3311SV *
3312_alloc (int count)
3313 CODE:
3314 RETVAL = coro_waitarray_new (aTHX_ count);
2700 OUTPUT: 3315 OUTPUT:
2701 RETVAL 3316 RETVAL
2702 3317
2703SV * 3318SV *
2704count (SV *self) 3319count (SV *self)
… …
2713 adjust = 1 3328 adjust = 1
2714 CODE: 3329 CODE:
2715 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 3330 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2716 3331
2717void 3332void
2718down (SV *self) 3333down (...)
2719 CODE: 3334 CODE:
2720 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 3335 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3336
3337void
3338wait (...)
3339 CODE:
3340 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2721 3341
2722void 3342void
2723try (SV *self) 3343try (SV *self)
2724 PPCODE: 3344 PPCODE:
2725{ 3345{
… …
2737 XSRETURN_NO; 3357 XSRETURN_NO;
2738} 3358}
2739 3359
2740void 3360void
2741waiters (SV *self) 3361waiters (SV *self)
2742 CODE: 3362 PPCODE:
2743{ 3363{
2744 AV *av = (AV *)SvRV (self); 3364 AV *av = (AV *)SvRV (self);
3365 int wcount = AvFILLp (av) + 1 - 1;
2745 3366
2746 if (GIMME_V == G_SCALAR) 3367 if (GIMME_V == G_SCALAR)
2747 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3368 XPUSHs (sv_2mortal (newSViv (wcount)));
2748 else 3369 else
2749 { 3370 {
2750 int i; 3371 int i;
2751 EXTEND (SP, AvFILLp (av) + 1 - 1); 3372 EXTEND (SP, wcount);
2752 for (i = 1; i <= AvFILLp (av); ++i) 3373 for (i = 1; i <= wcount; ++i)
2753 PUSHs (newSVsv (AvARRAY (av)[i])); 3374 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2754 } 3375 }
2755} 3376}
2756 3377
3378MODULE = Coro::State PACKAGE = Coro::Signal
3379
3380SV *
3381new (SV *klass)
3382 CODE:
3383 RETVAL = sv_bless (
3384 coro_waitarray_new (aTHX_ 0),
3385 GvSTASH (CvGV (cv))
3386 );
3387 OUTPUT:
3388 RETVAL
3389
3390void
3391wait (...)
3392 CODE:
3393 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3394
3395void
3396broadcast (SV *self)
3397 CODE:
3398{
3399 AV *av = (AV *)SvRV (self);
3400 coro_signal_wake (aTHX_ av, AvFILLp (av));
3401}
3402
3403void
3404send (SV *self)
3405 CODE:
3406{
3407 AV *av = (AV *)SvRV (self);
3408
3409 if (AvFILLp (av))
3410 coro_signal_wake (aTHX_ av, 1);
3411 else
3412 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3413}
3414
3415IV
3416awaited (SV *self)
3417 CODE:
3418 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3419 OUTPUT:
3420 RETVAL
3421
3422
3423MODULE = Coro::State PACKAGE = Coro::AnyEvent
3424
3425BOOT:
3426 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3427
3428void
3429_schedule (...)
3430 CODE:
3431{
3432 static int incede;
3433
3434 api_cede_notself (aTHX);
3435
3436 ++incede;
3437 while (coro_nready >= incede && api_cede (aTHX))
3438 ;
3439
3440 sv_setsv (sv_activity, &PL_sv_undef);
3441 if (coro_nready >= incede)
3442 {
3443 PUSHMARK (SP);
3444 PUTBACK;
3445 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3446 }
3447
3448 --incede;
3449}
3450
3451
3452MODULE = Coro::State PACKAGE = Coro::AIO
3453
3454void
3455_register (char *target, char *proto, SV *req)
3456 CODE:
3457{
3458 CV *req_cv = coro_sv_2cv (aTHX_ req);
3459 /* newXSproto doesn't return the CV on 5.8 */
3460 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3461 sv_setpv ((SV *)slf_cv, proto);
3462 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3463}
3464

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