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Comparing Coro/Coro/State.xs (file contents):
Revision 1.280 by root, Sun Nov 16 09:43:18 2008 UTC vs.
Revision 1.323 by root, Sat Nov 22 06:03:10 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 */
171static volatile struct coro *transfer_next; 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
172 180
173static GV *irsgv; /* $/ */ 181static GV *irsgv; /* $/ */
174static GV *stdoutgv; /* *STDOUT */ 182static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook; 183static SV *rv_diehook;
176static SV *rv_warnhook; 184static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */ 185static HV *hv_sig; /* %SIG */
178 186
179/* async_pool helper stuff */ 187/* async_pool helper stuff */
180static SV *sv_pool_rss; 188static SV *sv_pool_rss;
181static SV *sv_pool_size; 189static SV *sv_pool_size;
190static SV *sv_async_pool_idle; /* description string */
182static 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;
183 195
184/* Coro::AnyEvent */ 196/* Coro::AnyEvent */
185static SV *sv_activity; 197static SV *sv_activity;
186 198
187static struct coro_cctx *cctx_first; 199static struct coro_cctx *cctx_first;
… …
216 int valgrind_id; 228 int valgrind_id;
217#endif 229#endif
218 unsigned char flags; 230 unsigned char flags;
219} coro_cctx; 231} coro_cctx;
220 232
233coro_cctx *cctx_current; /* the currently running cctx */
234
235/*****************************************************************************/
236
221enum { 237enum {
222 CF_RUNNING = 0x0001, /* coroutine is running */ 238 CF_RUNNING = 0x0001, /* coroutine is running */
223 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
224 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
… …
242/* this is a structure representing a perl-level coroutine */ 258/* this is a structure representing a perl-level coroutine */
243struct coro { 259struct coro {
244 /* the C coroutine allocated to this perl coroutine, if any */ 260 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 261 coro_cctx *cctx;
246 262
247 /* process data */ 263 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 264 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 265 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 266 perl_slots *slot; /* basically the saved sp */
251 267
268 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 269 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */ 270 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 271 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 272 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro); 273 void (*on_destroy)(pTHX_ struct coro *coro);
257 274
258 /* statistics */ 275 /* statistics */
259 int usecount; /* number of transfers to this coro */ 276 int usecount; /* number of transfers to this coro */
260 277
261 /* coro process data */ 278 /* coro process data */
262 int prio; 279 int prio;
263 SV *throw; /* exception to be thrown */ 280 SV *except; /* exception to be thrown */
281 SV *rouse_cb;
264 282
265 /* async_pool */ 283 /* async_pool */
266 SV *saved_deffh; 284 SV *saved_deffh;
285 SV *invoke_cb;
286 AV *invoke_av;
267 287
268 /* linked list */ 288 /* linked list */
269 struct coro *next, *prev; 289 struct coro *next, *prev;
270}; 290};
271 291
272typedef struct coro *Coro__State; 292typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 293typedef struct coro *Coro__State_or_hashref;
274 294
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 */
275static struct CoroSLF slf_frame; /* the current slf frame */ 298static struct CoroSLF slf_frame; /* the current slf frame */
276 299
277/** Coro ********************************************************************/ 300/** Coro ********************************************************************/
278 301
279#define PRIO_MAX 3 302#define PRIO_MAX 3
… …
285 308
286/* for Coro.pm */ 309/* for Coro.pm */
287static SV *coro_current; 310static SV *coro_current;
288static SV *coro_readyhook; 311static SV *coro_readyhook;
289static 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;
290static struct coro *coro_first; 314static struct coro *coro_first;
291#define coro_nready coroapi.nready 315#define coro_nready coroapi.nready
292 316
293/** lowlevel stuff **********************************************************/ 317/** lowlevel stuff **********************************************************/
294 318
… …
320 get_hv (name, create); 344 get_hv (name, create);
321#endif 345#endif
322 return get_hv (name, create); 346 return get_hv (name, create);
323} 347}
324 348
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
325static AV * 358static AV *
326coro_clone_padlist (pTHX_ CV *cv) 359coro_derive_padlist (pTHX_ CV *cv)
327{ 360{
328 AV *padlist = CvPADLIST (cv); 361 AV *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 362 AV *newpadlist, *newpad;
330 363
331 newpadlist = newAV (); 364 newpadlist = newAV ();
… …
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 414 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 415
383 return 0; 416 return 0;
384} 417}
385 418
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext 419#define CORO_MAGIC_type_cv 26
387#define CORO_MAGIC_type_state PERL_MAGIC_ext 420#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 421
389static MGVTBL coro_cv_vtbl = { 422static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 423 0, 0, 0, 0,
391 coro_cv_free 424 coro_cv_free
392}; 425};
393 426
427#define CORO_MAGIC_NN(sv, type) \
428 (expect_true (SvMAGIC (sv)->mg_type == type) \
429 ? SvMAGIC (sv) \
430 : mg_find (sv, type))
431
394#define CORO_MAGIC(sv, type) \ 432#define CORO_MAGIC(sv, type) \
395 SvMAGIC (sv) \ 433 (expect_true (SvMAGIC (sv)) \
396 ? SvMAGIC (sv)->mg_type == type \ 434 ? CORO_MAGIC_NN (sv, type) \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0 435 : 0)
400 436
401#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)
402#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)
403 439
404INLINE struct coro * 440INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro) 441SvSTATE_ (pTHX_ SV *coro)
406{ 442{
407 HV *stash; 443 HV *stash;
… …
424 mg = CORO_MAGIC_state (coro); 460 mg = CORO_MAGIC_state (coro);
425 return (struct coro *)mg->mg_ptr; 461 return (struct coro *)mg->mg_ptr;
426} 462}
427 463
428#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))
429 469
430/* the next two functions merely cache the padlists */ 470/* the next two functions merely cache the padlists */
431static void 471static void
432get_padlist (pTHX_ CV *cv) 472get_padlist (pTHX_ CV *cv)
433{ 473{
… …
439 else 479 else
440 { 480 {
441#if CORO_PREFER_PERL_FUNCTIONS 481#if CORO_PREFER_PERL_FUNCTIONS
442 /* this is probably cleaner? but also slower! */ 482 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */ 483 /* in practise, it seems to be less stable */
444 CV *cp = Perl_cv_clone (cv); 484 CV *cp = Perl_cv_clone (aTHX_ cv);
445 CvPADLIST (cv) = CvPADLIST (cp); 485 CvPADLIST (cv) = CvPADLIST (cp);
446 CvPADLIST (cp) = 0; 486 CvPADLIST (cp) = 0;
447 SvREFCNT_dec (cp); 487 SvREFCNT_dec (cp);
448#else 488#else
449 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 489 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
450#endif 490#endif
451 } 491 }
452} 492}
453 493
454static void 494static void
… …
501 } 541 }
502 542
503 PUTBACK; 543 PUTBACK;
504 } 544 }
505 545
506 slf_frame = c->slf_frame; 546 slf_frame = c->slf_frame;
547 CORO_THROW = c->except;
507} 548}
508 549
509static void 550static void
510save_perl (pTHX_ Coro__State c) 551save_perl (pTHX_ Coro__State c)
511{ 552{
553 c->except = CORO_THROW;
512 c->slf_frame = slf_frame; 554 c->slf_frame = slf_frame;
513 555
514 { 556 {
515 dSP; 557 dSP;
516 I32 cxix = cxstack_ix; 558 I32 cxix = cxstack_ix;
… …
591 * of perl.c:init_stacks, except that it uses less memory 633 * of perl.c:init_stacks, except that it uses less memory
592 * on the (sometimes correct) assumption that coroutines do 634 * on the (sometimes correct) assumption that coroutines do
593 * not usually need a lot of stackspace. 635 * not usually need a lot of stackspace.
594 */ 636 */
595#if CORO_PREFER_PERL_FUNCTIONS 637#if CORO_PREFER_PERL_FUNCTIONS
596# define coro_init_stacks init_stacks 638# define coro_init_stacks(thx) init_stacks ()
597#else 639#else
598static void 640static void
599coro_init_stacks (pTHX) 641coro_init_stacks (pTHX)
600{ 642{
601 PL_curstackinfo = new_stackinfo(32, 8); 643 PL_curstackinfo = new_stackinfo(32, 8);
… …
664#if !PERL_VERSION_ATLEAST (5,10,0) 706#if !PERL_VERSION_ATLEAST (5,10,0)
665 Safefree (PL_retstack); 707 Safefree (PL_retstack);
666#endif 708#endif
667} 709}
668 710
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
669static size_t 720static size_t
670coro_rss (pTHX_ struct coro *coro) 721coro_rss (pTHX_ struct coro *coro)
671{ 722{
672 size_t rss = sizeof (*coro); 723 size_t rss = sizeof (*coro);
673 724
674 if (coro->mainstack) 725 if (coro->mainstack)
675 { 726 {
676 perl_slots tmp_slot;
677 perl_slots *slot;
678
679 if (coro->flags & CF_RUNNING) 727 if (coro->flags & CF_RUNNING)
680 { 728 {
681 slot = &tmp_slot; 729 #define SYM(sym) PL_ ## sym
682 730 CORO_RSS;
683 #define VAR(name,type) slot->name = PL_ ## name;
684 # include "state.h"
685 #undef VAR 731 #undef SYM
686 } 732 }
687 else 733 else
688 slot = coro->slot;
689
690 if (slot)
691 { 734 {
692 rss += sizeof (slot->curstackinfo); 735 #define SYM(sym) coro->slot->sym
693 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 736 CORO_RSS;
694 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 737 #undef SYM
695 rss += slot->tmps_max * sizeof (SV *);
696 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
697 rss += slot->scopestack_max * sizeof (I32);
698 rss += slot->savestack_max * sizeof (ANY);
699
700#if !PERL_VERSION_ATLEAST (5,10,0)
701 rss += slot->retstack_max * sizeof (OP *);
702#endif
703 } 738 }
704 } 739 }
705 740
706 return rss; 741 return rss;
707} 742}
… …
809slf_check_nop (pTHX_ struct CoroSLF *frame) 844slf_check_nop (pTHX_ struct CoroSLF *frame)
810{ 845{
811 return 0; 846 return 0;
812} 847}
813 848
814static 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 */
815coro_setup (pTHX_ struct coro *coro) 858coro_setup (pTHX_ struct coro *coro)
816{ 859{
817 /* 860 /*
818 * emulate part of the perl startup here. 861 * emulate part of the perl startup here.
819 */ 862 */
… …
846 { 889 {
847 dSP; 890 dSP;
848 UNOP myop; 891 UNOP myop;
849 892
850 Zero (&myop, 1, UNOP); 893 Zero (&myop, 1, UNOP);
851 myop.op_next = Nullop; 894 myop.op_next = Nullop;
895 myop.op_type = OP_ENTERSUB;
852 myop.op_flags = OPf_WANT_VOID; 896 myop.op_flags = OPf_WANT_VOID;
853 897
854 PUSHMARK (SP); 898 PUSHMARK (SP);
855 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 899 PUSHs ((SV *)coro->startcv);
856 PUTBACK; 900 PUTBACK;
857 PL_op = (OP *)&myop; 901 PL_op = (OP *)&myop;
858 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 902 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
859 SPAGAIN;
860 } 903 }
861 904
862 /* 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
863 * 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.
864 */ 907 */
865 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 */
866 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;
867} 921}
868 922
869static void 923static void
870coro_destruct (pTHX_ struct coro *coro) 924coro_destruct (pTHX_ struct coro *coro)
871{ 925{
… …
895 949
896 SvREFCNT_dec (PL_diehook); 950 SvREFCNT_dec (PL_diehook);
897 SvREFCNT_dec (PL_warnhook); 951 SvREFCNT_dec (PL_warnhook);
898 952
899 SvREFCNT_dec (coro->saved_deffh); 953 SvREFCNT_dec (coro->saved_deffh);
900 SvREFCNT_dec (coro->throw); 954 SvREFCNT_dec (coro->rouse_cb);
955 SvREFCNT_dec (coro->invoke_cb);
956 SvREFCNT_dec (coro->invoke_av);
901 957
902 coro_destruct_stacks (aTHX); 958 coro_destruct_stacks (aTHX);
903} 959}
904 960
905INLINE void 961INLINE void
… …
915static int 971static int
916runops_trace (pTHX) 972runops_trace (pTHX)
917{ 973{
918 COP *oldcop = 0; 974 COP *oldcop = 0;
919 int oldcxix = -2; 975 int oldcxix = -2;
920 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
921 coro_cctx *cctx = coro->cctx;
922 976
923 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 977 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
924 { 978 {
925 PERL_ASYNC_CHECK (); 979 PERL_ASYNC_CHECK ();
926 980
927 if (cctx->flags & CC_TRACE_ALL) 981 if (cctx_current->flags & CC_TRACE_ALL)
928 { 982 {
929 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)
930 { 984 {
931 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 985 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
932 SV **bot, **top; 986 SV **bot, **top;
933 AV *av = newAV (); /* return values */ 987 AV *av = newAV (); /* return values */
934 SV **cb; 988 SV **cb;
… …
971 1025
972 if (PL_curcop != &PL_compiling) 1026 if (PL_curcop != &PL_compiling)
973 { 1027 {
974 SV **cb; 1028 SV **cb;
975 1029
976 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1030 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
977 { 1031 {
978 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1032 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
979 1033
980 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1034 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
981 { 1035 {
982 runops_proc_t old_runops = PL_runops;
983 dSP; 1036 dSP;
984 GV *gv = CvGV (cx->blk_sub.cv); 1037 GV *gv = CvGV (cx->blk_sub.cv);
985 SV *fullname = sv_2mortal (newSV (0)); 1038 SV *fullname = sv_2mortal (newSV (0));
986 1039
987 if (isGV (gv)) 1040 if (isGV (gv))
… …
992 SAVETMPS; 1045 SAVETMPS;
993 EXTEND (SP, 3); 1046 EXTEND (SP, 3);
994 PUSHMARK (SP); 1047 PUSHMARK (SP);
995 PUSHs (&PL_sv_yes); 1048 PUSHs (&PL_sv_yes);
996 PUSHs (fullname); 1049 PUSHs (fullname);
997 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);
998 PUTBACK; 1051 PUTBACK;
999 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);
1000 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);
1001 SPAGAIN; 1054 SPAGAIN;
1002 FREETMPS; 1055 FREETMPS;
… …
1005 } 1058 }
1006 1059
1007 oldcxix = cxstack_ix; 1060 oldcxix = cxstack_ix;
1008 } 1061 }
1009 1062
1010 if (cctx->flags & CC_TRACE_LINE) 1063 if (cctx_current->flags & CC_TRACE_LINE)
1011 { 1064 {
1012 dSP; 1065 dSP;
1013 1066
1014 PL_runops = RUNOPS_DEFAULT; 1067 PL_runops = RUNOPS_DEFAULT;
1015 ENTER; 1068 ENTER;
… …
1034 1087
1035 TAINT_NOT; 1088 TAINT_NOT;
1036 return 0; 1089 return 0;
1037} 1090}
1038 1091
1092static struct CoroSLF cctx_ssl_frame;
1093
1039static void 1094static void
1040prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1095slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1041{ 1096{
1042 ta->prev = (struct coro *)cctx;
1043 ta->next = 0; 1097 ta->prev = 0;
1044} 1098}
1045 1099
1046/* inject a fake call to Coro::State::_cctx_init into the execution */ 1100static int
1047/* _cctx_init should be careful, as it could be called at almost any time */ 1101slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1048/* during execution of a perl program */ 1102{
1049/* 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 */
1050static void NOINLINE 1109static void NOINLINE
1051cctx_prepare (pTHX_ coro_cctx *cctx) 1110cctx_prepare (pTHX)
1052{ 1111{
1053 dSP;
1054 UNOP myop;
1055
1056 PL_top_env = &PL_start_env; 1112 PL_top_env = &PL_start_env;
1057 1113
1058 if (cctx->flags & CC_TRACE) 1114 if (cctx_current->flags & CC_TRACE)
1059 PL_runops = runops_trace; 1115 PL_runops = runops_trace;
1060 1116
1061 Zero (&myop, 1, UNOP); 1117 /* we already must be executing an SLF op, there is no other valid way
1062 myop.op_next = PL_op; 1118 * that can lead to creation of a new cctx */
1063 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));
1064 1121
1065 PUSHMARK (SP); 1122 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1066 EXTEND (SP, 2); 1123 cctx_ssl_frame = slf_frame;
1067 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1124
1068 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1125 slf_frame.prepare = slf_prepare_set_stacklevel;
1069 PUTBACK; 1126 slf_frame.check = slf_check_set_stacklevel;
1070 PL_op = (OP *)&myop;
1071 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1072 SPAGAIN;
1073} 1127}
1074 1128
1075/* 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 */
1076INLINE void 1130INLINE void
1077transfer_tail (pTHX) 1131transfer_tail (pTHX)
1078{ 1132{
1079 struct coro *next = (struct coro *)transfer_next;
1080 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1081 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1082
1083 free_coro_mortal (aTHX); 1133 free_coro_mortal (aTHX);
1084
1085 if (expect_false (next->throw))
1086 {
1087 SV *exception = sv_2mortal (next->throw);
1088
1089 next->throw = 0;
1090 sv_setsv (ERRSV, exception);
1091 croak (0);
1092 }
1093} 1134}
1094 1135
1095/* 1136/*
1096 * this is a _very_ stripped down perl interpreter ;) 1137 * this is a _very_ stripped down perl interpreter ;)
1097 */ 1138 */
… …
1109 /* normally we would need to skip the entersub here */ 1150 /* normally we would need to skip the entersub here */
1110 /* 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 */
1111 /* PL_nop = PL_nop->op_next */ 1152 /* PL_nop = PL_nop->op_next */
1112 1153
1113 /* inject a fake subroutine call to cctx_init */ 1154 /* inject a fake subroutine call to cctx_init */
1114 cctx_prepare (aTHX_ (coro_cctx *)arg); 1155 cctx_prepare (aTHX);
1115 1156
1116 /* cctx_run is the alternative tail of transfer() */ 1157 /* cctx_run is the alternative tail of transfer() */
1117 /* TODO: throwing an exception here might be deadly, VERIFY */
1118 transfer_tail (aTHX); 1158 transfer_tail (aTHX);
1119 1159
1120 /* 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 */
1121 PL_restartop = PL_op; 1161 PL_restartop = PL_op;
1122 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 */
1123 1167
1124 /* 1168 /*
1125 * 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
1126 * 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)
1127 * 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
… …
1211cctx_destroy (coro_cctx *cctx) 1255cctx_destroy (coro_cctx *cctx)
1212{ 1256{
1213 if (!cctx) 1257 if (!cctx)
1214 return; 1258 return;
1215 1259
1260 assert (cctx != cctx_current);//D temporary
1261
1216 --cctx_count; 1262 --cctx_count;
1217 coro_destroy (&cctx->cctx); 1263 coro_destroy (&cctx->cctx);
1218 1264
1219 /* coro_transfer creates new, empty cctx's */ 1265 /* coro_transfer creates new, empty cctx's */
1220 if (cctx->sptr) 1266 if (cctx->sptr)
… …
1278/** coroutine switching *****************************************************/ 1324/** coroutine switching *****************************************************/
1279 1325
1280static void 1326static void
1281transfer_check (pTHX_ struct coro *prev, struct coro *next) 1327transfer_check (pTHX_ struct coro *prev, struct coro *next)
1282{ 1328{
1329 /* TODO: throwing up here is considered harmful */
1330
1283 if (expect_true (prev != next)) 1331 if (expect_true (prev != next))
1284 { 1332 {
1285 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1333 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1286 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 non-running/new prev Coro::State, but can only transfer from running or new states,");
1287 1335
… …
1297#endif 1345#endif
1298 } 1346 }
1299} 1347}
1300 1348
1301/* always use the TRANSFER macro */ 1349/* always use the TRANSFER macro */
1302static void NOINLINE 1350static void NOINLINE /* noinline so we have a fixed stackframe */
1303transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1351transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1304{ 1352{
1305 dSTACKLEVEL; 1353 dSTACKLEVEL;
1306 1354
1307 /* sometimes transfer is only called to set idle_sp */ 1355 /* sometimes transfer is only called to set idle_sp */
1308 if (expect_false (!next)) 1356 if (expect_false (!prev))
1309 { 1357 {
1310 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1358 cctx_current->idle_sp = STACKLEVEL;
1311 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 */
1312 } 1360 }
1313 else if (expect_true (prev != next)) 1361 else if (expect_true (prev != next))
1314 { 1362 {
1315 coro_cctx *prev__cctx; 1363 coro_cctx *cctx_prev;
1316 1364
1317 if (expect_false (prev->flags & CF_NEW)) 1365 if (expect_false (prev->flags & CF_NEW))
1318 { 1366 {
1319 /* create a new empty/source context */ 1367 /* create a new empty/source context */
1320 prev->cctx = cctx_new_empty ();
1321 prev->flags &= ~CF_NEW; 1368 prev->flags &= ~CF_NEW;
1322 prev->flags |= CF_RUNNING; 1369 prev->flags |= CF_RUNNING;
1323 } 1370 }
1324 1371
1325 prev->flags &= ~CF_RUNNING; 1372 prev->flags &= ~CF_RUNNING;
… …
1336 coro_setup (aTHX_ next); 1383 coro_setup (aTHX_ next);
1337 } 1384 }
1338 else 1385 else
1339 load_perl (aTHX_ next); 1386 load_perl (aTHX_ next);
1340 1387
1341 prev__cctx = prev->cctx;
1342
1343 /* possibly untie and reuse the cctx */ 1388 /* possibly untie and reuse the cctx */
1344 if (expect_true ( 1389 if (expect_true (
1345 prev__cctx->idle_sp == (void *)stacklevel 1390 cctx_current->idle_sp == STACKLEVEL
1346 && !(prev__cctx->flags & CC_TRACE) 1391 && !(cctx_current->flags & CC_TRACE)
1347 && !force_cctx 1392 && !force_cctx
1348 )) 1393 ))
1349 { 1394 {
1350 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1395 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1351 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1396 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1352
1353 prev->cctx = 0;
1354 1397
1355 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1398 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1356 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1399 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1357 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1400 if (expect_false (CCTX_EXPIRED (cctx_current)))
1358 if (!next->cctx) 1401 if (!next->cctx)
1359 next->cctx = cctx_get (aTHX); 1402 next->cctx = cctx_get (aTHX);
1360 1403
1361 cctx_put (prev__cctx); 1404 cctx_put (cctx_current);
1405 assert (!prev->cctx);//D temporary
1362 } 1406 }
1407 else
1408 prev->cctx = cctx_current;
1363 1409
1364 ++next->usecount; 1410 ++next->usecount;
1365 1411
1366 if (expect_true (!next->cctx)) 1412 cctx_prev = cctx_current;
1367 next->cctx = cctx_get (aTHX); 1413 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1368 1414
1369 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1415 next->cctx = 0;
1370 transfer_next = next;
1371 1416
1372 if (expect_false (prev__cctx != next->cctx)) 1417 if (expect_false (cctx_prev != cctx_current))
1373 { 1418 {
1374 prev__cctx->top_env = PL_top_env; 1419 cctx_prev->top_env = PL_top_env;
1375 PL_top_env = next->cctx->top_env; 1420 PL_top_env = cctx_current->top_env;
1376 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1421 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1377 } 1422 }
1378 1423
1379 transfer_tail (aTHX); 1424 transfer_tail (aTHX);
1380 } 1425 }
1381} 1426}
… …
1420 1465
1421 coro->slot = 0; 1466 coro->slot = 0;
1422 } 1467 }
1423 1468
1424 cctx_destroy (coro->cctx); 1469 cctx_destroy (coro->cctx);
1470 SvREFCNT_dec (coro->startcv);
1425 SvREFCNT_dec (coro->args); 1471 SvREFCNT_dec (coro->args);
1472 SvREFCNT_dec (CORO_THROW);
1426 1473
1427 if (coro->next) coro->next->prev = coro->prev; 1474 if (coro->next) coro->next->prev = coro->prev;
1428 if (coro->prev) coro->prev->next = coro->next; 1475 if (coro->prev) coro->prev->next = coro->next;
1429 if (coro == coro_first) coro_first = coro->next; 1476 if (coro == coro_first) coro_first = coro->next;
1430 1477
… …
1484 1531
1485 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1532 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1486 TRANSFER (ta, 1); 1533 TRANSFER (ta, 1);
1487} 1534}
1488 1535
1536/*****************************************************************************/
1537/* gensub: simple closure generation utility */
1538
1539#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1540
1541/* create a closure from XS, returns a code reference */
1542/* the arg can be accessed via GENSUB_ARG from the callback */
1543/* the callback must use dXSARGS/XSRETURN */
1544static SV *
1545gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1546{
1547 CV *cv = (CV *)newSV (0);
1548
1549 sv_upgrade ((SV *)cv, SVt_PVCV);
1550
1551 CvANON_on (cv);
1552 CvISXSUB_on (cv);
1553 CvXSUB (cv) = xsub;
1554 GENSUB_ARG = arg;
1555
1556 return newRV_noinc ((SV *)cv);
1557}
1558
1489/** Coro ********************************************************************/ 1559/** Coro ********************************************************************/
1490 1560
1491static void 1561INLINE void
1492coro_enq (pTHX_ SV *coro_sv) 1562coro_enq (pTHX_ struct coro *coro)
1493{ 1563{
1494 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1564 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1495} 1565}
1496 1566
1497static SV * 1567INLINE SV *
1498coro_deq (pTHX) 1568coro_deq (pTHX)
1499{ 1569{
1500 int prio; 1570 int prio;
1501 1571
1502 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1572 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1524 coro->flags |= CF_READY; 1594 coro->flags |= CF_READY;
1525 1595
1526 sv_hook = coro_nready ? 0 : coro_readyhook; 1596 sv_hook = coro_nready ? 0 : coro_readyhook;
1527 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1597 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1528 1598
1529 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1599 coro_enq (aTHX_ coro);
1530 ++coro_nready; 1600 ++coro_nready;
1531 1601
1532 if (sv_hook) 1602 if (sv_hook)
1533 { 1603 {
1534 dSP; 1604 dSP;
… …
1536 ENTER; 1606 ENTER;
1537 SAVETMPS; 1607 SAVETMPS;
1538 1608
1539 PUSHMARK (SP); 1609 PUSHMARK (SP);
1540 PUTBACK; 1610 PUTBACK;
1541 call_sv (sv_hook, G_DISCARD); 1611 call_sv (sv_hook, G_VOID | G_DISCARD);
1542 SPAGAIN;
1543 1612
1544 FREETMPS; 1613 FREETMPS;
1545 LEAVE; 1614 LEAVE;
1546 } 1615 }
1547 1616
… …
1555api_is_ready (pTHX_ SV *coro_sv) 1624api_is_ready (pTHX_ SV *coro_sv)
1556{ 1625{
1557 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1626 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1558} 1627}
1559 1628
1629/* expects to own a reference to next->hv */
1560INLINE void 1630INLINE void
1631prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1632{
1633 SV *prev_sv = SvRV (coro_current);
1634
1635 ta->prev = SvSTATE_hv (prev_sv);
1636 ta->next = next;
1637
1638 TRANSFER_CHECK (*ta);
1639
1640 SvRV_set (coro_current, (SV *)next->hv);
1641
1642 free_coro_mortal (aTHX);
1643 coro_mortal = prev_sv;
1644}
1645
1646static void
1561prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1647prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1562{ 1648{
1563 SV *prev_sv, *next_sv;
1564
1565 for (;;) 1649 for (;;)
1566 { 1650 {
1567 next_sv = coro_deq (aTHX); 1651 SV *next_sv = coro_deq (aTHX);
1568 1652
1569 /* nothing to schedule: call the idle handler */
1570 if (expect_false (!next_sv)) 1653 if (expect_true (next_sv))
1571 { 1654 {
1655 struct coro *next = SvSTATE_hv (next_sv);
1656
1657 /* cannot transfer to destroyed coros, skip and look for next */
1658 if (expect_false (next->flags & CF_DESTROYED))
1659 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1660 else
1661 {
1662 next->flags &= ~CF_READY;
1663 --coro_nready;
1664
1665 prepare_schedule_to (aTHX_ ta, next);
1666 break;
1667 }
1668 }
1669 else
1670 {
1671 /* nothing to schedule: call the idle handler */
1572 dSP; 1672 dSP;
1573 1673
1574 ENTER; 1674 ENTER;
1575 SAVETMPS; 1675 SAVETMPS;
1576 1676
1577 PUSHMARK (SP); 1677 PUSHMARK (SP);
1578 PUTBACK; 1678 PUTBACK;
1579 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1679 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1580 SPAGAIN;
1581 1680
1582 FREETMPS; 1681 FREETMPS;
1583 LEAVE; 1682 LEAVE;
1584 continue;
1585 } 1683 }
1586
1587 ta->next = SvSTATE (next_sv);
1588
1589 /* cannot transfer to destroyed coros, skip and look for next */
1590 if (expect_false (ta->next->flags & CF_DESTROYED))
1591 {
1592 SvREFCNT_dec (next_sv);
1593 /* coro_nready has already been taken care of by destroy */
1594 continue;
1595 }
1596
1597 --coro_nready;
1598 break;
1599 } 1684 }
1600
1601 /* free this only after the transfer */
1602 prev_sv = SvRV (coro_current);
1603 ta->prev = SvSTATE (prev_sv);
1604 TRANSFER_CHECK (*ta);
1605 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1606 ta->next->flags &= ~CF_READY;
1607 SvRV_set (coro_current, next_sv);
1608
1609 free_coro_mortal (aTHX);
1610 coro_mortal = prev_sv;
1611} 1685}
1612 1686
1613INLINE void 1687INLINE void
1614prepare_cede (pTHX_ struct coro_transfer_args *ta) 1688prepare_cede (pTHX_ struct coro_transfer_args *ta)
1615{ 1689{
… …
1636{ 1710{
1637 struct coro_transfer_args ta; 1711 struct coro_transfer_args ta;
1638 1712
1639 prepare_schedule (aTHX_ &ta); 1713 prepare_schedule (aTHX_ &ta);
1640 TRANSFER (ta, 1); 1714 TRANSFER (ta, 1);
1715}
1716
1717static void
1718api_schedule_to (pTHX_ SV *coro_sv)
1719{
1720 struct coro_transfer_args ta;
1721 struct coro *next = SvSTATE (coro_sv);
1722
1723 SvREFCNT_inc_NN (coro_sv);
1724 prepare_schedule_to (aTHX_ &ta, next);
1641} 1725}
1642 1726
1643static int 1727static int
1644api_cede (pTHX) 1728api_cede (pTHX)
1645{ 1729{
… …
1692 if (coro->flags & CF_RUNNING) 1776 if (coro->flags & CF_RUNNING)
1693 PL_runops = RUNOPS_DEFAULT; 1777 PL_runops = RUNOPS_DEFAULT;
1694 else 1778 else
1695 coro->slot->runops = RUNOPS_DEFAULT; 1779 coro->slot->runops = RUNOPS_DEFAULT;
1696 } 1780 }
1781}
1782
1783static void
1784coro_call_on_destroy (pTHX_ struct coro *coro)
1785{
1786 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1787 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1788
1789 if (on_destroyp)
1790 {
1791 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1792
1793 while (AvFILLp (on_destroy) >= 0)
1794 {
1795 dSP; /* don't disturb outer sp */
1796 SV *cb = av_pop (on_destroy);
1797
1798 PUSHMARK (SP);
1799
1800 if (statusp)
1801 {
1802 int i;
1803 AV *status = (AV *)SvRV (*statusp);
1804 EXTEND (SP, AvFILLp (status) + 1);
1805
1806 for (i = 0; i <= AvFILLp (status); ++i)
1807 PUSHs (AvARRAY (status)[i]);
1808 }
1809
1810 PUTBACK;
1811 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1812 }
1813 }
1814}
1815
1816static void
1817slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1818{
1819 int i;
1820 HV *hv = (HV *)SvRV (coro_current);
1821 AV *av = newAV ();
1822
1823 av_extend (av, items - 1);
1824 for (i = 0; i < items; ++i)
1825 av_push (av, SvREFCNT_inc_NN (arg [i]));
1826
1827 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1828
1829 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1830 api_ready (aTHX_ sv_manager);
1831
1832 frame->prepare = prepare_schedule;
1833 frame->check = slf_check_repeat;
1834}
1835
1836/*****************************************************************************/
1837/* async pool handler */
1838
1839static int
1840slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1841{
1842 HV *hv = (HV *)SvRV (coro_current);
1843 struct coro *coro = (struct coro *)frame->data;
1844
1845 if (!coro->invoke_cb)
1846 return 1; /* loop till we have invoke */
1847 else
1848 {
1849 hv_store (hv, "desc", sizeof ("desc") - 1,
1850 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1851
1852 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1853
1854 {
1855 dSP;
1856 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1857 PUTBACK;
1858 }
1859
1860 SvREFCNT_dec (GvAV (PL_defgv));
1861 GvAV (PL_defgv) = coro->invoke_av;
1862 coro->invoke_av = 0;
1863
1864 return 0;
1865 }
1866}
1867
1868static void
1869slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1870{
1871 HV *hv = (HV *)SvRV (coro_current);
1872 struct coro *coro = SvSTATE_hv ((SV *)hv);
1873
1874 if (expect_true (coro->saved_deffh))
1875 {
1876 /* subsequent iteration */
1877 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1878 coro->saved_deffh = 0;
1879
1880 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1881 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1882 {
1883 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1884 coro->invoke_av = newAV ();
1885
1886 frame->prepare = prepare_nop;
1887 }
1888 else
1889 {
1890 av_clear (GvAV (PL_defgv));
1891 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1892
1893 coro->prio = 0;
1894
1895 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1896 api_trace (aTHX_ coro_current, 0);
1897
1898 frame->prepare = prepare_schedule;
1899 av_push (av_async_pool, SvREFCNT_inc (hv));
1900 }
1901 }
1902 else
1903 {
1904 /* first iteration, simply fall through */
1905 frame->prepare = prepare_nop;
1906 }
1907
1908 frame->check = slf_check_pool_handler;
1909 frame->data = (void *)coro;
1910}
1911
1912/*****************************************************************************/
1913/* rouse callback */
1914
1915#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1916
1917static void
1918coro_rouse_callback (pTHX_ CV *cv)
1919{
1920 dXSARGS;
1921 SV *data = (SV *)GENSUB_ARG;
1922
1923 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1924 {
1925 /* first call, set args */
1926 AV *av = newAV ();
1927 SV *coro = SvRV (data);
1928
1929 SvRV_set (data, (SV *)av);
1930 api_ready (aTHX_ coro);
1931 SvREFCNT_dec (coro);
1932
1933 /* better take a full copy of the arguments */
1934 while (items--)
1935 av_store (av, items, newSVsv (ST (items)));
1936 }
1937
1938 XSRETURN_EMPTY;
1939}
1940
1941static int
1942slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1943{
1944 SV *data = (SV *)frame->data;
1945
1946 if (CORO_THROW)
1947 return 0;
1948
1949 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1950 return 1;
1951
1952 /* now push all results on the stack */
1953 {
1954 dSP;
1955 AV *av = (AV *)SvRV (data);
1956 int i;
1957
1958 EXTEND (SP, AvFILLp (av) + 1);
1959 for (i = 0; i <= AvFILLp (av); ++i)
1960 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1961
1962 /* we have stolen the elements, so ste length to zero and free */
1963 AvFILLp (av) = -1;
1964 av_undef (av);
1965
1966 PUTBACK;
1967 }
1968
1969 return 0;
1970}
1971
1972static void
1973slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1974{
1975 SV *cb;
1976
1977 if (items)
1978 cb = arg [0];
1979 else
1980 {
1981 struct coro *coro = SvSTATE_current;
1982
1983 if (!coro->rouse_cb)
1984 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1985
1986 cb = sv_2mortal (coro->rouse_cb);
1987 coro->rouse_cb = 0;
1988 }
1989
1990 if (!SvROK (cb)
1991 || SvTYPE (SvRV (cb)) != SVt_PVCV
1992 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1993 croak ("Coro::rouse_wait called with illegal callback argument,");
1994
1995 {
1996 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1997 SV *data = (SV *)GENSUB_ARG;
1998
1999 frame->data = (void *)data;
2000 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2001 frame->check = slf_check_rouse_wait;
2002 }
2003}
2004
2005static SV *
2006coro_new_rouse_cb (pTHX)
2007{
2008 HV *hv = (HV *)SvRV (coro_current);
2009 struct coro *coro = SvSTATE_hv (hv);
2010 SV *data = newRV_inc ((SV *)hv);
2011 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2012
2013 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2014 SvREFCNT_dec (data); /* magicext increases the refcount */
2015
2016 SvREFCNT_dec (coro->rouse_cb);
2017 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2018
2019 return cb;
2020}
2021
2022/*****************************************************************************/
2023/* schedule-like-function opcode (SLF) */
2024
2025static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2026static const CV *slf_cv;
2027static SV **slf_argv;
2028static int slf_argc, slf_arga; /* count, allocated */
2029static I32 slf_ax; /* top of stack, for restore */
2030
2031/* this restores the stack in the case we patched the entersub, to */
2032/* recreate the stack frame as perl will on following calls */
2033/* since entersub cleared the stack */
2034static OP *
2035pp_restore (pTHX)
2036{
2037 int i;
2038 SV **SP = PL_stack_base + slf_ax;
2039
2040 PUSHMARK (SP);
2041
2042 EXTEND (SP, slf_argc + 1);
2043
2044 for (i = 0; i < slf_argc; ++i)
2045 PUSHs (sv_2mortal (slf_argv [i]));
2046
2047 PUSHs ((SV *)CvGV (slf_cv));
2048
2049 RETURNOP (slf_restore.op_first);
2050}
2051
2052static void
2053slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2054{
2055 SV **arg = (SV **)slf_frame.data;
2056
2057 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2058}
2059
2060static void
2061slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2062{
2063 if (items != 2)
2064 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2065
2066 frame->prepare = slf_prepare_transfer;
2067 frame->check = slf_check_nop;
2068 frame->data = (void *)arg; /* let's hope it will stay valid */
2069}
2070
2071static void
2072slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2073{
2074 frame->prepare = prepare_schedule;
2075 frame->check = slf_check_nop;
2076}
2077
2078static void
2079slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2080{
2081 struct coro *next = (struct coro *)slf_frame.data;
2082
2083 SvREFCNT_inc_NN (next->hv);
2084 prepare_schedule_to (aTHX_ ta, next);
2085}
2086
2087static void
2088slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2089{
2090 if (!items)
2091 croak ("Coro::schedule_to expects a coroutine argument, caught");
2092
2093 frame->data = (void *)SvSTATE (arg [0]);
2094 frame->prepare = slf_prepare_schedule_to;
2095 frame->check = slf_check_nop;
2096}
2097
2098static void
2099slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2100{
2101 api_ready (aTHX_ SvRV (coro_current));
2102
2103 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2104}
2105
2106static void
2107slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2108{
2109 frame->prepare = prepare_cede;
2110 frame->check = slf_check_nop;
2111}
2112
2113static void
2114slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2115{
2116 frame->prepare = prepare_cede_notself;
2117 frame->check = slf_check_nop;
2118}
2119
2120/*
2121 * these not obviously related functions are all rolled into one
2122 * function to increase chances that they all will call transfer with the same
2123 * stack offset
2124 * SLF stands for "schedule-like-function".
2125 */
2126static OP *
2127pp_slf (pTHX)
2128{
2129 I32 checkmark; /* mark SP to see how many elements check has pushed */
2130
2131 /* set up the slf frame, unless it has already been set-up */
2132 /* the latter happens when a new coro has been started */
2133 /* or when a new cctx was attached to an existing coroutine */
2134 if (expect_true (!slf_frame.prepare))
2135 {
2136 /* first iteration */
2137 dSP;
2138 SV **arg = PL_stack_base + TOPMARK + 1;
2139 int items = SP - arg; /* args without function object */
2140 SV *gv = *sp;
2141
2142 /* do a quick consistency check on the "function" object, and if it isn't */
2143 /* for us, divert to the real entersub */
2144 if (SvTYPE (gv) != SVt_PVGV
2145 || !GvCV (gv)
2146 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2147 return PL_ppaddr[OP_ENTERSUB](aTHX);
2148
2149 if (!(PL_op->op_flags & OPf_STACKED))
2150 {
2151 /* ampersand-form of call, use @_ instead of stack */
2152 AV *av = GvAV (PL_defgv);
2153 arg = AvARRAY (av);
2154 items = AvFILLp (av) + 1;
2155 }
2156
2157 /* now call the init function, which needs to set up slf_frame */
2158 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2159 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2160
2161 /* pop args */
2162 SP = PL_stack_base + POPMARK;
2163
2164 PUTBACK;
2165 }
2166
2167 /* now that we have a slf_frame, interpret it! */
2168 /* we use a callback system not to make the code needlessly */
2169 /* complicated, but so we can run multiple perl coros from one cctx */
2170
2171 do
2172 {
2173 struct coro_transfer_args ta;
2174
2175 slf_frame.prepare (aTHX_ &ta);
2176 TRANSFER (ta, 0);
2177
2178 checkmark = PL_stack_sp - PL_stack_base;
2179 }
2180 while (slf_frame.check (aTHX_ &slf_frame));
2181
2182 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2183
2184 /* exception handling */
2185 if (expect_false (CORO_THROW))
2186 {
2187 SV *exception = sv_2mortal (CORO_THROW);
2188
2189 CORO_THROW = 0;
2190 sv_setsv (ERRSV, exception);
2191 croak (0);
2192 }
2193
2194 /* return value handling - mostly like entersub */
2195 /* make sure we put something on the stack in scalar context */
2196 if (GIMME_V == G_SCALAR)
2197 {
2198 dSP;
2199 SV **bot = PL_stack_base + checkmark;
2200
2201 if (sp == bot) /* too few, push undef */
2202 bot [1] = &PL_sv_undef;
2203 else if (sp != bot + 1) /* too many, take last one */
2204 bot [1] = *sp;
2205
2206 SP = bot + 1;
2207
2208 PUTBACK;
2209 }
2210
2211 return NORMAL;
2212}
2213
2214static void
2215api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2216{
2217 int i;
2218 SV **arg = PL_stack_base + ax;
2219 int items = PL_stack_sp - arg + 1;
2220
2221 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2222
2223 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2224 && PL_op->op_ppaddr != pp_slf)
2225 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2226
2227 CvFLAGS (cv) |= CVf_SLF;
2228 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2229 slf_cv = cv;
2230
2231 /* we patch the op, and then re-run the whole call */
2232 /* we have to put the same argument on the stack for this to work */
2233 /* and this will be done by pp_restore */
2234 slf_restore.op_next = (OP *)&slf_restore;
2235 slf_restore.op_type = OP_CUSTOM;
2236 slf_restore.op_ppaddr = pp_restore;
2237 slf_restore.op_first = PL_op;
2238
2239 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2240
2241 if (PL_op->op_flags & OPf_STACKED)
2242 {
2243 if (items > slf_arga)
2244 {
2245 slf_arga = items;
2246 free (slf_argv);
2247 slf_argv = malloc (slf_arga * sizeof (SV *));
2248 }
2249
2250 slf_argc = items;
2251
2252 for (i = 0; i < items; ++i)
2253 slf_argv [i] = SvREFCNT_inc (arg [i]);
2254 }
2255 else
2256 slf_argc = 0;
2257
2258 PL_op->op_ppaddr = pp_slf;
2259 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2260
2261 PL_op = (OP *)&slf_restore;
1697} 2262}
1698 2263
1699/*****************************************************************************/ 2264/*****************************************************************************/
1700/* PerlIO::cede */ 2265/* PerlIO::cede */
1701 2266
… …
1770 PerlIOBuf_get_cnt, 2335 PerlIOBuf_get_cnt,
1771 PerlIOBuf_set_ptrcnt, 2336 PerlIOBuf_set_ptrcnt,
1772}; 2337};
1773 2338
1774/*****************************************************************************/ 2339/*****************************************************************************/
2340/* Coro::Semaphore & Coro::Signal */
1775 2341
1776static const CV *slf_cv; /* for quick consistency check */
1777
1778static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1779static SV *slf_arg0;
1780static SV *slf_arg1;
1781static SV *slf_arg2;
1782
1783/* this restores the stack in the case we patched the entersub, to */
1784/* recreate the stack frame as perl will on following calls */
1785/* since entersub cleared the stack */
1786static OP * 2342static SV *
1787pp_restore (pTHX) 2343coro_waitarray_new (pTHX_ int count)
1788{ 2344{
1789 dSP; 2345 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2346 AV *av = newAV ();
2347 SV **ary;
1790 2348
1791 PUSHMARK (SP); 2349 /* unfortunately, building manually saves memory */
2350 Newx (ary, 2, SV *);
2351 AvALLOC (av) = ary;
2352 /*AvARRAY (av) = ary;*/
2353 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2354 AvMAX (av) = 1;
2355 AvFILLp (av) = 0;
2356 ary [0] = newSViv (count);
1792 2357
1793 EXTEND (SP, 3); 2358 return newRV_noinc ((SV *)av);
1794 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1795 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1796 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1797 PUSHs ((SV *)CvGV (slf_cv));
1798
1799 RETURNOP (slf_restore.op_first);
1800} 2359}
1801 2360
1802static void 2361/* semaphore */
1803slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1804{
1805 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1806}
1807 2362
1808static void 2363static void
1809slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1810{
1811 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1812
1813 frame->prepare = slf_prepare_set_stacklevel;
1814 frame->check = slf_check_nop;
1815 frame->data = (void *)SvIV (arg [0]);
1816}
1817
1818static void
1819slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1820{
1821 SV **arg = (SV **)slf_frame.data;
1822
1823 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1824}
1825
1826static void
1827slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1828{
1829 if (items != 2)
1830 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1831
1832 frame->prepare = slf_prepare_transfer;
1833 frame->check = slf_check_nop;
1834 frame->data = (void *)arg; /* let's hope it will stay valid */
1835}
1836
1837static void
1838slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 frame->prepare = prepare_schedule;
1841 frame->check = slf_check_nop;
1842}
1843
1844static void
1845slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1846{
1847 frame->prepare = prepare_cede;
1848 frame->check = slf_check_nop;
1849}
1850
1851static void
1852slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1853{
1854 frame->prepare = prepare_cede_notself;
1855 frame->check = slf_check_nop;
1856}
1857
1858/* we hijack an hopefully unused CV flag for our purposes */
1859#define CVf_SLF 0x4000
1860
1861/*
1862 * these not obviously related functions are all rolled into one
1863 * function to increase chances that they all will call transfer with the same
1864 * stack offset
1865 * SLF stands for "schedule-like-function".
1866 */
1867static OP *
1868pp_slf (pTHX)
1869{
1870 I32 checkmark; /* mark SP to see how many elements check has pushed */
1871
1872 /* set up the slf frame, unless it has already been set-up */
1873 /* the latter happens when a new coro has been started */
1874 /* or when a new cctx was attached to an existing coroutine */
1875 if (expect_true (!slf_frame.prepare))
1876 {
1877 /* first iteration */
1878 dSP;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 SV *gv = *sp;
1882
1883 /* do a quick consistency check on the "function" object, and if it isn't */
1884 /* for us, divert to the real entersub */
1885 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1886 return PL_ppaddr[OP_ENTERSUB](aTHX);
1887
1888 /* pop args */
1889 SP = PL_stack_base + POPMARK;
1890
1891 if (!(PL_op->op_flags & OPf_STACKED))
1892 {
1893 /* ampersand-form of call, use @_ instead of stack */
1894 AV *av = GvAV (PL_defgv);
1895 arg = AvARRAY (av);
1896 items = AvFILLp (av) + 1;
1897 }
1898
1899 PUTBACK;
1900
1901 /* now call the init function, which needs to set up slf_frame */
1902 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1903 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1904 }
1905
1906 /* now that we have a slf_frame, interpret it! */
1907 /* we use a callback system not to make the code needlessly */
1908 /* complicated, but so we can run multiple perl coros from one cctx */
1909
1910 do
1911 {
1912 struct coro_transfer_args ta;
1913
1914 slf_frame.prepare (aTHX_ &ta);
1915 TRANSFER (ta, 0);
1916
1917 checkmark = PL_stack_sp - PL_stack_base;
1918 }
1919 while (slf_frame.check (aTHX_ &slf_frame));
1920
1921 {
1922 dSP;
1923 SV **bot = PL_stack_base + checkmark;
1924 int gimme = GIMME_V;
1925
1926 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1927
1928 /* make sure we put something on the stack in scalar context */
1929 if (gimme == G_SCALAR)
1930 {
1931 if (sp == bot)
1932 XPUSHs (&PL_sv_undef);
1933
1934 SP = bot + 1;
1935 }
1936
1937 PUTBACK;
1938 }
1939
1940 return NORMAL;
1941}
1942
1943static void
1944api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1945{
1946 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1947
1948 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1949 && PL_op->op_ppaddr != pp_slf)
1950 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1951
1952 if (items > 3)
1953 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1954
1955 CvFLAGS (cv) |= CVf_SLF;
1956 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1957 slf_cv = cv;
1958
1959 /* we patch the op, and then re-run the whole call */
1960 /* we have to put the same argument on the stack for this to work */
1961 /* and this will be done by pp_restore */
1962 slf_restore.op_next = (OP *)&slf_restore;
1963 slf_restore.op_type = OP_CUSTOM;
1964 slf_restore.op_ppaddr = pp_restore;
1965 slf_restore.op_first = PL_op;
1966
1967 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1968 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1969 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1970
1971 PL_op->op_ppaddr = pp_slf;
1972
1973 PL_op = (OP *)&slf_restore;
1974}
1975
1976/*****************************************************************************/
1977
1978static void
1979coro_semaphore_adjust (AV *av, int adjust) 2364coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1980{ 2365{
1981 SV *count_sv = AvARRAY (av)[0]; 2366 SV *count_sv = AvARRAY (av)[0];
1982 IV count = SvIVX (count_sv); 2367 IV count = SvIVX (count_sv);
1983 2368
1984 count += adjust; 2369 count += adjust;
1985 SvIVX (count_sv) = count; 2370 SvIVX (count_sv) = count;
1986 2371
1987 /* now wake up as many waiters as possible */ 2372 /* now wake up as many waiters as are expected to lock */
1988 while (count > 0 && AvFILLp (av) >= count) 2373 while (count > 0 && AvFILLp (av) > 0)
1989 { 2374 {
1990 SV *cb; 2375 SV *cb;
1991 2376
1992 /* swap first two elements so we can shift a waiter */ 2377 /* swap first two elements so we can shift a waiter */
1993 AvARRAY (av)[0] = AvARRAY (av)[1]; 2378 AvARRAY (av)[0] = AvARRAY (av)[1];
1994 AvARRAY (av)[1] = count_sv; 2379 AvARRAY (av)[1] = count_sv;
1995 cb = av_shift (av); 2380 cb = av_shift (av);
1996 2381
1997 if (SvOBJECT (cb)) 2382 if (SvOBJECT (cb))
2383 {
1998 api_ready (aTHX_ cb); 2384 api_ready (aTHX_ cb);
1999 else 2385 --count;
2000 croak ("callbacks not yet supported"); 2386 }
2387 else if (SvTYPE (cb) == SVt_PVCV)
2388 {
2389 dSP;
2390 PUSHMARK (SP);
2391 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2392 PUTBACK;
2393 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2394 }
2001 2395
2002 SvREFCNT_dec (cb); 2396 SvREFCNT_dec (cb);
2003
2004 --count;
2005 } 2397 }
2006} 2398}
2007 2399
2008static void 2400static void
2009coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2401coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2010{ 2402{
2011 /* call $sem->adjust (0) to possibly wake up some waiters */ 2403 /* call $sem->adjust (0) to possibly wake up some other waiters */
2012 coro_semaphore_adjust ((AV *)coro->slf_frame.data, 0); 2404 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2013} 2405}
2014 2406
2015static int 2407static int
2016slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2408slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2017{ 2409{
2018 AV *av = (AV *)frame->data; 2410 AV *av = (AV *)frame->data;
2019 SV *count_sv = AvARRAY (av)[0]; 2411 SV *count_sv = AvARRAY (av)[0];
2020 2412
2413 /* if we are about to throw, don't actually acquire the lock, just throw */
2414 if (CORO_THROW)
2415 return 0;
2021 if (SvIVX (count_sv) > 0) 2416 else if (SvIVX (count_sv) > 0)
2022 { 2417 {
2023 SvSTATE (coro_current)->on_destroy = 0; 2418 SvSTATE_current->on_destroy = 0;
2419
2420 if (acquire)
2024 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2421 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2422 else
2423 coro_semaphore_adjust (aTHX_ av, 0);
2424
2025 return 0; 2425 return 0;
2026 } 2426 }
2027 else 2427 else
2028 { 2428 {
2029 int i; 2429 int i;
… …
2038 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2438 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2039 return 1; 2439 return 1;
2040 } 2440 }
2041} 2441}
2042 2442
2043static void 2443static int
2444slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2445{
2446 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2447}
2448
2449static int
2450slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2451{
2452 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2453}
2454
2455static void
2044slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2456slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2045{ 2457{
2046 AV *av = (AV *)SvRV (arg [0]); 2458 AV *av = (AV *)SvRV (arg [0]);
2047 2459
2048 if (SvIVX (AvARRAY (av)[0]) > 0) 2460 if (SvIVX (AvARRAY (av)[0]) > 0)
2049 { 2461 {
… …
2057 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2469 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2058 frame->prepare = prepare_schedule; 2470 frame->prepare = prepare_schedule;
2059 2471
2060 /* to avoid race conditions when a woken-up coro gets terminated */ 2472 /* to avoid race conditions when a woken-up coro gets terminated */
2061 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2473 /* we arrange for a temporary on_destroy that calls adjust (0) */
2062 SvSTATE (coro_current)->on_destroy = coro_semaphore_on_destroy; 2474 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2063 } 2475 }
2476}
2064 2477
2478static void
2479slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2480{
2481 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 2482 frame->check = slf_check_semaphore_down;
2483}
2066 2484
2485static void
2486slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2487{
2488 if (items >= 2)
2489 {
2490 /* callback form */
2491 AV *av = (AV *)SvRV (arg [0]);
2492 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2493
2494 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2495
2496 if (SvIVX (AvARRAY (av)[0]) > 0)
2497 coro_semaphore_adjust (aTHX_ av, 0);
2498
2499 frame->prepare = prepare_nop;
2500 frame->check = slf_check_nop;
2501 }
2502 else
2503 {
2504 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2505 frame->check = slf_check_semaphore_wait;
2506 }
2507}
2508
2509/* signal */
2510
2511static void
2512coro_signal_wake (pTHX_ AV *av, int count)
2513{
2514 SvIVX (AvARRAY (av)[0]) = 0;
2515
2516 /* now signal count waiters */
2517 while (count > 0 && AvFILLp (av) > 0)
2518 {
2519 SV *cb;
2520
2521 /* swap first two elements so we can shift a waiter */
2522 cb = AvARRAY (av)[0];
2523 AvARRAY (av)[0] = AvARRAY (av)[1];
2524 AvARRAY (av)[1] = cb;
2525
2526 cb = av_shift (av);
2527
2528 api_ready (aTHX_ cb);
2529 sv_setiv (cb, 0); /* signal waiter */
2530 SvREFCNT_dec (cb);
2531
2532 --count;
2533 }
2534}
2535
2536static int
2537slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2538{
2539 /* if we are about to throw, also stop waiting */
2540 return SvROK ((SV *)frame->data) && !CORO_THROW;
2541}
2542
2543static void
2544slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2545{
2546 AV *av = (AV *)SvRV (arg [0]);
2547
2548 if (SvIVX (AvARRAY (av)[0]))
2549 {
2550 SvIVX (AvARRAY (av)[0]) = 0;
2551 frame->prepare = prepare_nop;
2552 frame->check = slf_check_nop;
2553 }
2554 else
2555 {
2556 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2557
2558 av_push (av, waiter);
2559
2560 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2561 frame->prepare = prepare_schedule;
2562 frame->check = slf_check_signal_wait;
2563 }
2067} 2564}
2068 2565
2069/*****************************************************************************/ 2566/*****************************************************************************/
2567/* Coro::AIO */
2070 2568
2071#define GENSUB_ARG CvXSUBANY (cv).any_ptr 2569#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2072 2570
2073/* create a closure from XS, returns a code reference */ 2571/* helper storage struct */
2074/* the arg can be accessed via GENSUB_ARG from the callback */ 2572struct io_state
2075/* the callback must use dXSARGS/XSRETURN */
2076static SV *
2077gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2078{ 2573{
2079 CV *cv = (CV *)NEWSV (0, 0); 2574 int errorno;
2575 I32 laststype; /* U16 in 5.10.0 */
2576 int laststatval;
2577 Stat_t statcache;
2578};
2080 2579
2580static void
2581coro_aio_callback (pTHX_ CV *cv)
2582{
2583 dXSARGS;
2584 AV *state = (AV *)GENSUB_ARG;
2585 SV *coro = av_pop (state);
2586 SV *data_sv = newSV (sizeof (struct io_state));
2587
2588 av_extend (state, items - 1);
2589
2081 sv_upgrade ((SV *)cv, SVt_PVCV); 2590 sv_upgrade (data_sv, SVt_PV);
2591 SvCUR_set (data_sv, sizeof (struct io_state));
2592 SvPOK_only (data_sv);
2082 2593
2083 CvANON_on (cv); 2594 {
2084 CvISXSUB_on (cv); 2595 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2085 CvXSUB (cv) = xsub;
2086 GENSUB_ARG = arg;
2087 2596
2088 return newRV_noinc ((SV *)cv); 2597 data->errorno = errno;
2598 data->laststype = PL_laststype;
2599 data->laststatval = PL_laststatval;
2600 data->statcache = PL_statcache;
2601 }
2602
2603 /* now build the result vector out of all the parameters and the data_sv */
2604 {
2605 int i;
2606
2607 for (i = 0; i < items; ++i)
2608 av_push (state, SvREFCNT_inc_NN (ST (i)));
2609 }
2610
2611 av_push (state, data_sv);
2612
2613 api_ready (aTHX_ coro);
2614 SvREFCNT_dec (coro);
2615 SvREFCNT_dec ((AV *)state);
2616}
2617
2618static int
2619slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2620{
2621 AV *state = (AV *)frame->data;
2622
2623 /* if we are about to throw, return early */
2624 /* this does not cancel the aio request, but at least */
2625 /* it quickly returns */
2626 if (CORO_THROW)
2627 return 0;
2628
2629 /* one element that is an RV? repeat! */
2630 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2631 return 1;
2632
2633 /* restore status */
2634 {
2635 SV *data_sv = av_pop (state);
2636 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2637
2638 errno = data->errorno;
2639 PL_laststype = data->laststype;
2640 PL_laststatval = data->laststatval;
2641 PL_statcache = data->statcache;
2642
2643 SvREFCNT_dec (data_sv);
2644 }
2645
2646 /* push result values */
2647 {
2648 dSP;
2649 int i;
2650
2651 EXTEND (SP, AvFILLp (state) + 1);
2652 for (i = 0; i <= AvFILLp (state); ++i)
2653 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2654
2655 PUTBACK;
2656 }
2657
2658 return 0;
2659}
2660
2661static void
2662slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2663{
2664 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2665 SV *coro_hv = SvRV (coro_current);
2666 struct coro *coro = SvSTATE_hv (coro_hv);
2667
2668 /* put our coroutine id on the state arg */
2669 av_push (state, SvREFCNT_inc_NN (coro_hv));
2670
2671 /* first see whether we have a non-zero priority and set it as AIO prio */
2672 if (coro->prio)
2673 {
2674 dSP;
2675
2676 static SV *prio_cv;
2677 static SV *prio_sv;
2678
2679 if (expect_false (!prio_cv))
2680 {
2681 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2682 prio_sv = newSViv (0);
2683 }
2684
2685 PUSHMARK (SP);
2686 sv_setiv (prio_sv, coro->prio);
2687 XPUSHs (prio_sv);
2688
2689 PUTBACK;
2690 call_sv (prio_cv, G_VOID | G_DISCARD);
2691 }
2692
2693 /* now call the original request */
2694 {
2695 dSP;
2696 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2697 int i;
2698
2699 PUSHMARK (SP);
2700
2701 /* first push all args to the stack */
2702 EXTEND (SP, items + 1);
2703
2704 for (i = 0; i < items; ++i)
2705 PUSHs (arg [i]);
2706
2707 /* now push the callback closure */
2708 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2709
2710 /* now call the AIO function - we assume our request is uncancelable */
2711 PUTBACK;
2712 call_sv ((SV *)req, G_VOID | G_DISCARD);
2713 }
2714
2715 /* now that the requets is going, we loop toll we have a result */
2716 frame->data = (void *)state;
2717 frame->prepare = prepare_schedule;
2718 frame->check = slf_check_aio_req;
2719}
2720
2721static void
2722coro_aio_req_xs (pTHX_ CV *cv)
2723{
2724 dXSARGS;
2725
2726 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2727
2728 XSRETURN_EMPTY;
2089} 2729}
2090 2730
2091/*****************************************************************************/ 2731/*****************************************************************************/
2092 2732
2733#if CORO_CLONE
2734# include "clone.c"
2735#endif
2736
2093MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2737MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2094 2738
2095PROTOTYPES: DISABLE 2739PROTOTYPES: DISABLE
2096 2740
2097BOOT: 2741BOOT:
2098{ 2742{
2099#ifdef USE_ITHREADS 2743#ifdef USE_ITHREADS
2100 MUTEX_INIT (&coro_lock);
2101# if CORO_PTHREAD 2744# if CORO_PTHREAD
2102 coro_thx = PERL_GET_CONTEXT; 2745 coro_thx = PERL_GET_CONTEXT;
2103# endif 2746# endif
2104#endif 2747#endif
2105 BOOT_PAGESIZE; 2748 BOOT_PAGESIZE;
2749
2750 cctx_current = cctx_new_empty ();
2106 2751
2107 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2752 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2108 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2753 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2109 2754
2110 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2755 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2130 2775
2131 { 2776 {
2132 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 2777 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2133 2778
2134 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 2779 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2135 hv_store_ent (PL_custom_op_names, slf, 2780 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2136 newSVpv ("coro_slf", 0), 0);
2137 2781
2138 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 2782 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2139 hv_store_ent (PL_custom_op_descs, slf, 2783 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2140 newSVpv ("coro schedule like function", 0), 0);
2141 } 2784 }
2142 2785
2143 coroapi.ver = CORO_API_VERSION; 2786 coroapi.ver = CORO_API_VERSION;
2144 coroapi.rev = CORO_API_REVISION; 2787 coroapi.rev = CORO_API_REVISION;
2145 2788
… …
2164 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2807 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2165} 2808}
2166 2809
2167SV * 2810SV *
2168new (char *klass, ...) 2811new (char *klass, ...)
2812 ALIAS:
2813 Coro::new = 1
2169 CODE: 2814 CODE:
2170{ 2815{
2171 struct coro *coro; 2816 struct coro *coro;
2172 MAGIC *mg; 2817 MAGIC *mg;
2173 HV *hv; 2818 HV *hv;
2819 CV *cb;
2174 int i; 2820 int i;
2821
2822 if (items > 1)
2823 {
2824 cb = coro_sv_2cv (aTHX_ ST (1));
2825
2826 if (!ix)
2827 {
2828 if (CvISXSUB (cb))
2829 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2830
2831 if (!CvROOT (cb))
2832 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2833 }
2834 }
2175 2835
2176 Newz (0, coro, 1, struct coro); 2836 Newz (0, coro, 1, struct coro);
2177 coro->args = newAV (); 2837 coro->args = newAV ();
2178 coro->flags = CF_NEW; 2838 coro->flags = CF_NEW;
2179 2839
… …
2184 coro->hv = hv = newHV (); 2844 coro->hv = hv = newHV ();
2185 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2845 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2186 mg->mg_flags |= MGf_DUP; 2846 mg->mg_flags |= MGf_DUP;
2187 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2847 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2188 2848
2849 if (items > 1)
2850 {
2189 av_extend (coro->args, items - 1); 2851 av_extend (coro->args, items - 1 + ix - 1);
2852
2853 if (ix)
2854 {
2855 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2856 cb = cv_coro_run;
2857 }
2858
2859 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2860
2190 for (i = 1; i < items; i++) 2861 for (i = 2; i < items; i++)
2191 av_push (coro->args, newSVsv (ST (i))); 2862 av_push (coro->args, newSVsv (ST (i)));
2863 }
2192} 2864}
2193 OUTPUT: 2865 OUTPUT:
2194 RETVAL 2866 RETVAL
2195
2196void
2197_set_stacklevel (...)
2198 CODE:
2199 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2200 2867
2201void 2868void
2202transfer (...) 2869transfer (...)
2203 PROTOTYPE: $$ 2870 PROTOTYPE: $$
2204 CODE: 2871 CODE:
2205 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 2872 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2206 2873
2207bool 2874bool
2208_destroy (SV *coro_sv) 2875_destroy (SV *coro_sv)
2209 CODE: 2876 CODE:
2210 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2877 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2214void 2881void
2215_exit (int code) 2882_exit (int code)
2216 PROTOTYPE: $ 2883 PROTOTYPE: $
2217 CODE: 2884 CODE:
2218 _exit (code); 2885 _exit (code);
2886
2887SV *
2888clone (Coro::State coro)
2889 CODE:
2890{
2891#if CORO_CLONE
2892 struct coro *ncoro = coro_clone (coro);
2893 MAGIC *mg;
2894 /* TODO: too much duplication */
2895 ncoro->hv = newHV ();
2896 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2897 mg->mg_flags |= MGf_DUP;
2898 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2899#else
2900 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2901#endif
2902}
2903 OUTPUT:
2904 RETVAL
2219 2905
2220int 2906int
2221cctx_stacksize (int new_stacksize = 0) 2907cctx_stacksize (int new_stacksize = 0)
2222 PROTOTYPE: ;$ 2908 PROTOTYPE: ;$
2223 CODE: 2909 CODE:
… …
2328 3014
2329void 3015void
2330throw (Coro::State self, SV *throw = &PL_sv_undef) 3016throw (Coro::State self, SV *throw = &PL_sv_undef)
2331 PROTOTYPE: $;$ 3017 PROTOTYPE: $;$
2332 CODE: 3018 CODE:
3019{
3020 struct coro *current = SvSTATE_current;
3021 SV **throwp = self == current ? &CORO_THROW : &self->except;
2333 SvREFCNT_dec (self->throw); 3022 SvREFCNT_dec (*throwp);
2334 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3023 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3024}
2335 3025
2336void 3026void
2337api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3027api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2338 PROTOTYPE: $;$ 3028 PROTOTYPE: $;$
2339 C_ARGS: aTHX_ coro, flags 3029 C_ARGS: aTHX_ coro, flags
2340 3030
2341SV * 3031SV *
2342has_cctx (Coro::State coro) 3032has_cctx (Coro::State coro)
2343 PROTOTYPE: $ 3033 PROTOTYPE: $
2344 CODE: 3034 CODE:
2345 RETVAL = boolSV (!!coro->cctx); 3035 /* maybe manage the running flag differently */
3036 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2346 OUTPUT: 3037 OUTPUT:
2347 RETVAL 3038 RETVAL
2348 3039
2349int 3040int
2350is_traced (Coro::State coro) 3041is_traced (Coro::State coro)
… …
2370 3061
2371void 3062void
2372force_cctx () 3063force_cctx ()
2373 PROTOTYPE: 3064 PROTOTYPE:
2374 CODE: 3065 CODE:
2375 struct coro *coro = SvSTATE (coro_current);
2376 coro->cctx->idle_sp = 0; 3066 cctx_current->idle_sp = 0;
2377 3067
2378void 3068void
2379swap_defsv (Coro::State self) 3069swap_defsv (Coro::State self)
2380 PROTOTYPE: $ 3070 PROTOTYPE: $
2381 ALIAS: 3071 ALIAS:
… …
2389 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3079 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2390 3080
2391 SV *tmp = *src; *src = *dst; *dst = tmp; 3081 SV *tmp = *src; *src = *dst; *dst = tmp;
2392 } 3082 }
2393 3083
3084
2394MODULE = Coro::State PACKAGE = Coro 3085MODULE = Coro::State PACKAGE = Coro
2395 3086
2396BOOT: 3087BOOT:
2397{ 3088{
2398 int i; 3089 int i;
2399 3090
2400 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2401 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3091 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2402 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3092 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2403 3093 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3094 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2404 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3095 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2405 SvREADONLY_on (coro_current); 3096 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3097 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3098 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3099
3100 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3101 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3102 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3103 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2406 3104
2407 coro_stash = gv_stashpv ("Coro", TRUE); 3105 coro_stash = gv_stashpv ("Coro", TRUE);
2408 3106
2409 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3107 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2410 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3108 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2418 3116
2419 { 3117 {
2420 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3118 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2421 3119
2422 coroapi.schedule = api_schedule; 3120 coroapi.schedule = api_schedule;
3121 coroapi.schedule_to = api_schedule_to;
2423 coroapi.cede = api_cede; 3122 coroapi.cede = api_cede;
2424 coroapi.cede_notself = api_cede_notself; 3123 coroapi.cede_notself = api_cede_notself;
2425 coroapi.ready = api_ready; 3124 coroapi.ready = api_ready;
2426 coroapi.is_ready = api_is_ready; 3125 coroapi.is_ready = api_is_ready;
2427 coroapi.nready = coro_nready; 3126 coroapi.nready = coro_nready;
2428 coroapi.current = coro_current; 3127 coroapi.current = coro_current;
2429 3128
2430 GCoroAPI = &coroapi; 3129 /*GCoroAPI = &coroapi;*/
2431 sv_setiv (sv, (IV)&coroapi); 3130 sv_setiv (sv, (IV)&coroapi);
2432 SvREADONLY_on (sv); 3131 SvREADONLY_on (sv);
2433 } 3132 }
2434} 3133}
2435 3134
2436void 3135void
3136terminate (...)
3137 CODE:
3138 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3139
3140void
2437schedule (...) 3141schedule (...)
2438 CODE: 3142 CODE:
2439 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3143 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3144
3145void
3146schedule_to (...)
3147 CODE:
3148 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3149
3150void
3151cede_to (...)
3152 CODE:
3153 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2440 3154
2441void 3155void
2442cede (...) 3156cede (...)
2443 CODE: 3157 CODE:
2444 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3158 CORO_EXECUTE_SLF_XS (slf_init_cede);
2445 3159
2446void 3160void
2447cede_notself (...) 3161cede_notself (...)
2448 CODE: 3162 CODE:
2449 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3163 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3164
3165void
3166_cancel (Coro::State self)
3167 CODE:
3168 coro_state_destroy (aTHX_ self);
3169 coro_call_on_destroy (aTHX_ self);
2450 3170
2451void 3171void
2452_set_current (SV *current) 3172_set_current (SV *current)
2453 PROTOTYPE: $ 3173 PROTOTYPE: $
2454 CODE: 3174 CODE:
… …
2499 CODE: 3219 CODE:
2500 RETVAL = coro_nready; 3220 RETVAL = coro_nready;
2501 OUTPUT: 3221 OUTPUT:
2502 RETVAL 3222 RETVAL
2503 3223
2504# for async_pool speedup
2505void 3224void
2506_pool_1 (SV *cb) 3225_pool_handler (...)
2507 CODE: 3226 CODE:
2508{ 3227 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2509 struct coro *coro = SvSTATE (coro_current);
2510 HV *hv = (HV *)SvRV (coro_current);
2511 AV *defav = GvAV (PL_defgv);
2512 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2513 AV *invoke_av;
2514 int i, len;
2515
2516 if (!invoke)
2517 {
2518 SV *old = PL_diehook;
2519 PL_diehook = 0;
2520 SvREFCNT_dec (old);
2521 croak ("\3async_pool terminate\2\n");
2522 }
2523
2524 SvREFCNT_dec (coro->saved_deffh);
2525 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2526
2527 hv_store (hv, "desc", sizeof ("desc") - 1,
2528 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2529
2530 invoke_av = (AV *)SvRV (invoke);
2531 len = av_len (invoke_av);
2532
2533 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2534
2535 if (len > 0)
2536 {
2537 av_fill (defav, len - 1);
2538 for (i = 0; i < len; ++i)
2539 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2540 }
2541}
2542 3228
2543void 3229void
2544_pool_2 (SV *cb) 3230async_pool (SV *cv, ...)
2545 CODE:
2546{
2547 struct coro *coro = SvSTATE (coro_current);
2548
2549 sv_setsv (cb, &PL_sv_undef);
2550
2551 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2552 coro->saved_deffh = 0;
2553
2554 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2555 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2556 {
2557 SV *old = PL_diehook;
2558 PL_diehook = 0;
2559 SvREFCNT_dec (old);
2560 croak ("\3async_pool terminate\2\n");
2561 }
2562
2563 av_clear (GvAV (PL_defgv));
2564 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2565 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2566
2567 coro->prio = 0;
2568
2569 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2570 api_trace (aTHX_ coro_current, 0);
2571
2572 av_push (av_async_pool, newSVsv (coro_current));
2573}
2574
2575
2576MODULE = Coro::State PACKAGE = Coro::AIO
2577
2578void
2579_get_state (SV *self)
2580 PROTOTYPE: $ 3231 PROTOTYPE: &@
2581 PPCODE: 3232 PPCODE:
2582{ 3233{
2583 AV *defav = GvAV (PL_defgv); 3234 HV *hv = (HV *)av_pop (av_async_pool);
2584 AV *av = newAV (); 3235 AV *av = newAV ();
3236 SV *cb = ST (0);
2585 int i; 3237 int i;
2586 SV *data_sv = newSV (sizeof (struct io_state));
2587 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2588 SvCUR_set (data_sv, sizeof (struct io_state));
2589 SvPOK_only (data_sv);
2590 3238
2591 data->errorno = errno; 3239 av_extend (av, items - 2);
2592 data->laststype = PL_laststype; 3240 for (i = 1; i < items; ++i)
2593 data->laststatval = PL_laststatval;
2594 data->statcache = PL_statcache;
2595
2596 av_extend (av, AvFILLp (defav) + 1 + 1);
2597
2598 for (i = 0; i <= AvFILLp (defav); ++i)
2599 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3241 av_push (av, SvREFCNT_inc_NN (ST (i)));
2600 3242
2601 av_push (av, data_sv); 3243 if ((SV *)hv == &PL_sv_undef)
2602
2603 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2604
2605 api_ready (aTHX_ self);
2606}
2607
2608void
2609_set_state (SV *state)
2610 PROTOTYPE: $
2611 PPCODE:
2612{
2613 AV *av = (AV *)SvRV (state);
2614 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2615 int i;
2616
2617 errno = data->errorno;
2618 PL_laststype = data->laststype;
2619 PL_laststatval = data->laststatval;
2620 PL_statcache = data->statcache;
2621
2622 EXTEND (SP, AvFILLp (av));
2623 for (i = 0; i < AvFILLp (av); ++i)
2624 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2625}
2626
2627
2628MODULE = Coro::State PACKAGE = Coro::AnyEvent
2629
2630BOOT:
2631 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2632
2633void
2634_schedule (...)
2635 CODE:
2636{
2637 static int incede;
2638
2639 api_cede_notself (aTHX);
2640
2641 ++incede;
2642 while (coro_nready >= incede && api_cede (aTHX))
2643 ;
2644
2645 sv_setsv (sv_activity, &PL_sv_undef);
2646 if (coro_nready >= incede)
2647 { 3244 {
2648 PUSHMARK (SP); 3245 PUSHMARK (SP);
3246 EXTEND (SP, 2);
3247 PUSHs (sv_Coro);
3248 PUSHs ((SV *)cv_pool_handler);
2649 PUTBACK; 3249 PUTBACK;
2650 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3250 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
2651 SPAGAIN; 3251 SPAGAIN;
3252
3253 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2652 } 3254 }
2653 3255
2654 --incede; 3256 {
3257 struct coro *coro = SvSTATE_hv (hv);
3258
3259 assert (!coro->invoke_cb);
3260 assert (!coro->invoke_av);
3261 coro->invoke_cb = SvREFCNT_inc (cb);
3262 coro->invoke_av = av;
3263 }
3264
3265 api_ready (aTHX_ (SV *)hv);
3266
3267 if (GIMME_V != G_VOID)
3268 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3269 else
3270 SvREFCNT_dec (hv);
2655} 3271}
3272
3273SV *
3274rouse_cb ()
3275 PROTOTYPE:
3276 CODE:
3277 RETVAL = coro_new_rouse_cb (aTHX);
3278 OUTPUT:
3279 RETVAL
3280
3281void
3282rouse_wait (...)
3283 PROTOTYPE: ;$
3284 PPCODE:
3285 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2656 3286
2657 3287
2658MODULE = Coro::State PACKAGE = PerlIO::cede 3288MODULE = Coro::State PACKAGE = PerlIO::cede
2659 3289
2660BOOT: 3290BOOT:
2661 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3291 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2662 3292
3293
2663MODULE = Coro::State PACKAGE = Coro::Semaphore 3294MODULE = Coro::State PACKAGE = Coro::Semaphore
2664 3295
2665SV * 3296SV *
2666new (SV *klass, SV *count_ = 0) 3297new (SV *klass, SV *count = 0)
2667 CODE: 3298 CODE:
2668{ 3299 RETVAL = sv_bless (
2669 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3300 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
2670 AV *av = newAV (); 3301 GvSTASH (CvGV (cv))
2671 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 3302 );
2672 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 3303 OUTPUT:
2673} 3304 RETVAL
3305
3306# helper for Coro::Channel
3307SV *
3308_alloc (int count)
3309 CODE:
3310 RETVAL = coro_waitarray_new (aTHX_ count);
2674 OUTPUT: 3311 OUTPUT:
2675 RETVAL 3312 RETVAL
2676 3313
2677SV * 3314SV *
2678count (SV *self) 3315count (SV *self)
… …
2684void 3321void
2685up (SV *self, int adjust = 1) 3322up (SV *self, int adjust = 1)
2686 ALIAS: 3323 ALIAS:
2687 adjust = 1 3324 adjust = 1
2688 CODE: 3325 CODE:
2689 coro_semaphore_adjust ((AV *)SvRV (self), ix ? adjust : 1); 3326 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2690 3327
2691void 3328void
2692down (SV *self) 3329down (...)
2693 CODE: 3330 CODE:
2694 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 3331 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3332
3333void
3334wait (...)
3335 CODE:
3336 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2695 3337
2696void 3338void
2697try (SV *self) 3339try (SV *self)
2698 PPCODE: 3340 PPCODE:
2699{ 3341{
… …
2711 XSRETURN_NO; 3353 XSRETURN_NO;
2712} 3354}
2713 3355
2714void 3356void
2715waiters (SV *self) 3357waiters (SV *self)
2716 CODE: 3358 PPCODE:
2717{ 3359{
2718 AV *av = (AV *)SvRV (self); 3360 AV *av = (AV *)SvRV (self);
3361 int wcount = AvFILLp (av) + 1 - 1;
2719 3362
2720 if (GIMME_V == G_SCALAR) 3363 if (GIMME_V == G_SCALAR)
2721 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 3364 XPUSHs (sv_2mortal (newSViv (wcount)));
2722 else 3365 else
2723 { 3366 {
2724 int i; 3367 int i;
2725 EXTEND (SP, AvFILLp (av) + 1 - 1); 3368 EXTEND (SP, wcount);
2726 for (i = 1; i <= AvFILLp (av); ++i) 3369 for (i = 1; i <= wcount; ++i)
2727 PUSHs (newSVsv (AvARRAY (av)[i])); 3370 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2728 } 3371 }
2729} 3372}
2730 3373
3374MODULE = Coro::State PACKAGE = Coro::Signal
3375
3376SV *
3377new (SV *klass)
3378 CODE:
3379 RETVAL = sv_bless (
3380 coro_waitarray_new (aTHX_ 0),
3381 GvSTASH (CvGV (cv))
3382 );
3383 OUTPUT:
3384 RETVAL
3385
3386void
3387wait (...)
3388 CODE:
3389 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3390
3391void
3392broadcast (SV *self)
3393 CODE:
3394{
3395 AV *av = (AV *)SvRV (self);
3396 coro_signal_wake (aTHX_ av, AvFILLp (av));
3397}
3398
3399void
3400send (SV *self)
3401 CODE:
3402{
3403 AV *av = (AV *)SvRV (self);
3404
3405 if (AvFILLp (av))
3406 coro_signal_wake (aTHX_ av, 1);
3407 else
3408 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3409}
3410
3411IV
3412awaited (SV *self)
3413 CODE:
3414 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3415 OUTPUT:
3416 RETVAL
3417
3418
3419MODULE = Coro::State PACKAGE = Coro::AnyEvent
3420
3421BOOT:
3422 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3423
3424void
3425_schedule (...)
3426 CODE:
3427{
3428 static int incede;
3429
3430 api_cede_notself (aTHX);
3431
3432 ++incede;
3433 while (coro_nready >= incede && api_cede (aTHX))
3434 ;
3435
3436 sv_setsv (sv_activity, &PL_sv_undef);
3437 if (coro_nready >= incede)
3438 {
3439 PUSHMARK (SP);
3440 PUTBACK;
3441 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3442 }
3443
3444 --incede;
3445}
3446
3447
3448MODULE = Coro::State PACKAGE = Coro::AIO
3449
3450void
3451_register (char *target, char *proto, SV *req)
3452 CODE:
3453{
3454 CV *req_cv = coro_sv_2cv (aTHX_ req);
3455 /* newXSproto doesn't return the CV on 5.8 */
3456 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3457 sv_setpv ((SV *)slf_cv, proto);
3458 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3459}
3460

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