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Comparing Coro/Coro/State.xs (file contents):
Revision 1.259 by root, Mon Nov 10 00:02:29 2008 UTC vs.
Revision 1.319 by root, Thu Nov 20 07:25:01 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
… …
46# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
47#endif 47#endif
48 48
49#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 51#endif
55 52
56/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
57static int cctx_max_idle = 4; 54static int cctx_max_idle = 4;
58 55
59#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
64 61
65#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr 63# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
68# endif 65# endif
… …
98# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
99#endif 96#endif
100#ifndef newSV 97#ifndef newSV
101# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
102#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
103 106
104/* 5.8.7 */ 107/* 5.8.7 */
105#ifndef SvRV_set 108#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v) 109# define SvRV_set(s,v) SvRV(s) = (v)
107#endif 110#endif
… …
119# define CORO_PREFER_PERL_FUNCTIONS 0 122# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 123#endif
121 124
122/* The next macros try to return the current stack pointer, in an as 125/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 126 * portable way as possible. */
127#if __GNUC__ >= 4
128# define dSTACKLEVEL int stacklevel_dummy
129# define STACKLEVEL __builtin_frame_address (0)
130#else
124#define dSTACKLEVEL volatile char stacklevel 131# define dSTACKLEVEL volatile void *stacklevel
125#define STACKLEVEL ((void *)&stacklevel) 132# define STACKLEVEL ((void *)&stacklevel)
133#endif
126 134
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 135#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 136
129#if __GNUC__ >= 3 137#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 138# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value)) 139# define expect(expr,value) __builtin_expect ((expr),(value))
140# define INLINE static inline
133#else 141#else
134# define attribute(x) 142# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr) 143# define expect(expr,value) (expr)
144# define INLINE static
137#endif 145#endif
138 146
139#define expect_false(expr) expect ((expr) != 0, 0) 147#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1) 148#define expect_true(expr) expect ((expr) != 0, 1)
141 149
142#define NOINLINE attribute ((noinline)) 150#define NOINLINE attribute ((noinline))
143 151
144#include "CoroAPI.h" 152#include "CoroAPI.h"
153#define GCoroAPI (&coroapi) /* very sneaky */
145 154
146#ifdef USE_ITHREADS 155#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 156# if CORO_PTHREAD
152static void *coro_thx; 157static void *coro_thx;
153# endif 158# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 159#endif
161 160
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176
177static double (*nvtime)(); /* so why doesn't it take void? */ 161static double (*nvtime)(); /* so why doesn't it take void? */
162
163/* we hijack an hopefully unused CV flag for our purposes */
164#define CVf_SLF 0x4000
165static OP *pp_slf (pTHX);
178 166
179static U32 cctx_gen; 167static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 171static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile char next_has_throw; /* speedup flag for next->throw check */ 174
175static AV *av_destroy; /* destruction queue */
176static SV *sv_manager; /* the manager coro */
187 177
188static GV *irsgv; /* $/ */ 178static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 179static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 180static SV *rv_diehook;
191static SV *rv_warnhook; 181static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 182static HV *hv_sig; /* %SIG */
193 183
194/* async_pool helper stuff */ 184/* async_pool helper stuff */
195static SV *sv_pool_rss; 185static SV *sv_pool_rss;
196static SV *sv_pool_size; 186static SV *sv_pool_size;
187static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 188static AV *av_async_pool; /* idle pool */
189static SV *sv_Coro; /* class string */
190static CV *cv_pool_handler;
191static CV *cv_coro_state_new;
198 192
199/* Coro::AnyEvent */ 193/* Coro::AnyEvent */
200static SV *sv_activity; 194static SV *sv_activity;
201 195
202static struct coro_cctx *cctx_first; 196static struct coro_cctx *cctx_first;
… …
210 CC_TRACE_LINE = 0x10, /* trace each statement */ 204 CC_TRACE_LINE = 0x10, /* trace each statement */
211 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 205 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
212}; 206};
213 207
214/* this is a structure representing a c-level coroutine */ 208/* this is a structure representing a c-level coroutine */
215typedef struct coro_cctx { 209typedef struct coro_cctx
210{
216 struct coro_cctx *next; 211 struct coro_cctx *next;
217 212
218 /* the stack */ 213 /* the stack */
219 void *sptr; 214 void *sptr;
220 size_t ssize; 215 size_t ssize;
… …
238 CF_NEW = 0x0004, /* has never been switched to */ 233 CF_NEW = 0x0004, /* has never been switched to */
239 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 234 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
240}; 235};
241 236
242/* the structure where most of the perl state is stored, overlaid on the cxstack */ 237/* the structure where most of the perl state is stored, overlaid on the cxstack */
243typedef struct { 238typedef struct
239{
244 SV *defsv; 240 SV *defsv;
245 AV *defav; 241 AV *defav;
246 SV *errsv; 242 SV *errsv;
247 SV *irsgv; 243 SV *irsgv;
248#define VAR(name,type) type name; 244#define VAR(name,type) type name;
… …
252 248
253#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 249#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
254 250
255/* this is a structure representing a perl-level coroutine */ 251/* this is a structure representing a perl-level coroutine */
256struct coro { 252struct coro {
257 /* the c coroutine allocated to this perl coroutine, if any */ 253 /* the C coroutine allocated to this perl coroutine, if any */
258 coro_cctx *cctx; 254 coro_cctx *cctx;
259 255
260 /* process data */ 256 /* state data */
257 struct CoroSLF slf_frame; /* saved slf frame */
261 AV *mainstack; 258 AV *mainstack;
262 perl_slots *slot; /* basically the saved sp */ 259 perl_slots *slot; /* basically the saved sp */
263 260
261 CV *startcv; /* the CV to execute */
264 AV *args; /* data associated with this coroutine (initial args) */ 262 AV *args; /* data associated with this coroutine (initial args) */
265 int refcnt; /* coroutines are refcounted, yes */ 263 int refcnt; /* coroutines are refcounted, yes */
266 int flags; /* CF_ flags */ 264 int flags; /* CF_ flags */
267 HV *hv; /* the perl hash associated with this coro, if any */ 265 HV *hv; /* the perl hash associated with this coro, if any */
266 void (*on_destroy)(pTHX_ struct coro *coro);
268 267
269 /* statistics */ 268 /* statistics */
270 int usecount; /* number of transfers to this coro */ 269 int usecount; /* number of transfers to this coro */
271 270
272 /* coro process data */ 271 /* coro process data */
273 int prio; 272 int prio;
274 SV *throw; /* exception to be thrown */ 273 SV *except; /* exception to be thrown */
274 SV *rouse_cb;
275 275
276 /* async_pool */ 276 /* async_pool */
277 SV *saved_deffh; 277 SV *saved_deffh;
278 SV *invoke_cb;
279 AV *invoke_av;
278 280
279 /* linked list */ 281 /* linked list */
280 struct coro *next, *prev; 282 struct coro *next, *prev;
281}; 283};
282 284
283typedef struct coro *Coro__State; 285typedef struct coro *Coro__State;
284typedef struct coro *Coro__State_or_hashref; 286typedef struct coro *Coro__State_or_hashref;
287
288/* the following variables are effectively part of the perl context */
289/* and get copied between struct coro and these variables */
290/* the mainr easonw e don't support windows process emulation */
291static struct CoroSLF slf_frame; /* the current slf frame */
285 292
286/** Coro ********************************************************************/ 293/** Coro ********************************************************************/
287 294
288#define PRIO_MAX 3 295#define PRIO_MAX 3
289#define PRIO_HIGH 1 296#define PRIO_HIGH 1
… …
294 301
295/* for Coro.pm */ 302/* for Coro.pm */
296static SV *coro_current; 303static SV *coro_current;
297static SV *coro_readyhook; 304static SV *coro_readyhook;
298static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 305static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
299static int coro_nready; 306static CV *cv_coro_run, *cv_coro_terminate;
300static struct coro *coro_first; 307static struct coro *coro_first;
308#define coro_nready coroapi.nready
301 309
302/** lowlevel stuff **********************************************************/ 310/** lowlevel stuff **********************************************************/
303 311
304static SV * 312static SV *
305coro_get_sv (pTHX_ const char *name, int create) 313coro_get_sv (pTHX_ const char *name, int create)
… …
327#if PERL_VERSION_ATLEAST (5,10,0) 335#if PERL_VERSION_ATLEAST (5,10,0)
328 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 336 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
329 get_hv (name, create); 337 get_hv (name, create);
330#endif 338#endif
331 return get_hv (name, create); 339 return get_hv (name, create);
340}
341
342/* may croak */
343INLINE CV *
344coro_sv_2cv (pTHX_ SV *sv)
345{
346 HV *st;
347 GV *gvp;
348 return sv_2cv (sv, &st, &gvp, 0);
332} 349}
333 350
334static AV * 351static AV *
335coro_clone_padlist (pTHX_ CV *cv) 352coro_clone_padlist (pTHX_ CV *cv)
336{ 353{
… …
390 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 407 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
391 408
392 return 0; 409 return 0;
393} 410}
394 411
395#define CORO_MAGIC_type_cv PERL_MAGIC_ext 412#define CORO_MAGIC_type_cv 26
396#define CORO_MAGIC_type_state PERL_MAGIC_ext 413#define CORO_MAGIC_type_state PERL_MAGIC_ext
397 414
398static MGVTBL coro_cv_vtbl = { 415static MGVTBL coro_cv_vtbl = {
399 0, 0, 0, 0, 416 0, 0, 0, 0,
400 coro_cv_free 417 coro_cv_free
401}; 418};
402 419
420#define CORO_MAGIC_NN(sv, type) \
421 (expect_true (SvMAGIC (sv)->mg_type == type) \
422 ? SvMAGIC (sv) \
423 : mg_find (sv, type))
424
403#define CORO_MAGIC(sv, type) \ 425#define CORO_MAGIC(sv, type) \
404 SvMAGIC (sv) \ 426 (expect_true (SvMAGIC (sv)) \
405 ? SvMAGIC (sv)->mg_type == type \ 427 ? CORO_MAGIC_NN (sv, type) \
406 ? SvMAGIC (sv) \
407 : mg_find (sv, type) \
408 : 0 428 : 0)
409 429
410#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 430#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
411#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 431#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
412 432
413static struct coro * 433INLINE struct coro *
414SvSTATE_ (pTHX_ SV *coro) 434SvSTATE_ (pTHX_ SV *coro)
415{ 435{
416 HV *stash; 436 HV *stash;
417 MAGIC *mg; 437 MAGIC *mg;
418 438
… …
433 mg = CORO_MAGIC_state (coro); 453 mg = CORO_MAGIC_state (coro);
434 return (struct coro *)mg->mg_ptr; 454 return (struct coro *)mg->mg_ptr;
435} 455}
436 456
437#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 457#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
458
459/* faster than SvSTATE, but expects a coroutine hv */
460#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
461#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
438 462
439/* the next two functions merely cache the padlists */ 463/* the next two functions merely cache the padlists */
440static void 464static void
441get_padlist (pTHX_ CV *cv) 465get_padlist (pTHX_ CV *cv)
442{ 466{
… …
448 else 472 else
449 { 473 {
450#if CORO_PREFER_PERL_FUNCTIONS 474#if CORO_PREFER_PERL_FUNCTIONS
451 /* this is probably cleaner? but also slower! */ 475 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */ 476 /* in practise, it seems to be less stable */
453 CV *cp = Perl_cv_clone (cv); 477 CV *cp = Perl_cv_clone (aTHX_ cv);
454 CvPADLIST (cv) = CvPADLIST (cp); 478 CvPADLIST (cv) = CvPADLIST (cp);
455 CvPADLIST (cp) = 0; 479 CvPADLIST (cp) = 0;
456 SvREFCNT_dec (cp); 480 SvREFCNT_dec (cp);
457#else 481#else
458 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 482 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
509 CvPADLIST (cv) = (AV *)POPs; 533 CvPADLIST (cv) = (AV *)POPs;
510 } 534 }
511 535
512 PUTBACK; 536 PUTBACK;
513 } 537 }
538
539 slf_frame = c->slf_frame;
540 CORO_THROW = c->except;
514} 541}
515 542
516static void 543static void
517save_perl (pTHX_ Coro__State c) 544save_perl (pTHX_ Coro__State c)
518{ 545{
546 c->except = CORO_THROW;
547 c->slf_frame = slf_frame;
548
519 { 549 {
520 dSP; 550 dSP;
521 I32 cxix = cxstack_ix; 551 I32 cxix = cxstack_ix;
522 PERL_CONTEXT *ccstk = cxstack; 552 PERL_CONTEXT *ccstk = cxstack;
523 PERL_SI *top_si = PL_curstackinfo; 553 PERL_SI *top_si = PL_curstackinfo;
… …
590 #undef VAR 620 #undef VAR
591 } 621 }
592} 622}
593 623
594/* 624/*
595 * allocate various perl stacks. This is an exact copy 625 * allocate various perl stacks. This is almost an exact copy
596 * of perl.c:init_stacks, except that it uses less memory 626 * of perl.c:init_stacks, except that it uses less memory
597 * on the (sometimes correct) assumption that coroutines do 627 * on the (sometimes correct) assumption that coroutines do
598 * not usually need a lot of stackspace. 628 * not usually need a lot of stackspace.
599 */ 629 */
600#if CORO_PREFER_PERL_FUNCTIONS 630#if CORO_PREFER_PERL_FUNCTIONS
601# define coro_init_stacks init_stacks 631# define coro_init_stacks(thx) init_stacks ()
602#else 632#else
603static void 633static void
604coro_init_stacks (pTHX) 634coro_init_stacks (pTHX)
605{ 635{
606 PL_curstackinfo = new_stackinfo(32, 8); 636 PL_curstackinfo = new_stackinfo(32, 8);
… …
669#if !PERL_VERSION_ATLEAST (5,10,0) 699#if !PERL_VERSION_ATLEAST (5,10,0)
670 Safefree (PL_retstack); 700 Safefree (PL_retstack);
671#endif 701#endif
672} 702}
673 703
704#define CORO_RSS \
705 rss += sizeof (SYM (curstackinfo)); \
706 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
708 rss += SYM (tmps_max) * sizeof (SV *); \
709 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
710 rss += SYM (scopestack_max) * sizeof (I32); \
711 rss += SYM (savestack_max) * sizeof (ANY);
712
674static size_t 713static size_t
675coro_rss (pTHX_ struct coro *coro) 714coro_rss (pTHX_ struct coro *coro)
676{ 715{
677 size_t rss = sizeof (*coro); 716 size_t rss = sizeof (*coro);
678 717
679 if (coro->mainstack) 718 if (coro->mainstack)
680 { 719 {
681 perl_slots tmp_slot;
682 perl_slots *slot;
683
684 if (coro->flags & CF_RUNNING) 720 if (coro->flags & CF_RUNNING)
685 { 721 {
686 slot = &tmp_slot; 722 #define SYM(sym) PL_ ## sym
687 723 CORO_RSS;
688 #define VAR(name,type) slot->name = PL_ ## name;
689 # include "state.h"
690 #undef VAR 724 #undef SYM
691 } 725 }
692 else 726 else
693 slot = coro->slot;
694
695 if (slot)
696 { 727 {
697 rss += sizeof (slot->curstackinfo); 728 #define SYM(sym) coro->slot->sym
698 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 729 CORO_RSS;
699 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 730 #undef SYM
700 rss += slot->tmps_max * sizeof (SV *);
701 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
702 rss += slot->scopestack_max * sizeof (I32);
703 rss += slot->savestack_max * sizeof (ANY);
704
705#if !PERL_VERSION_ATLEAST (5,10,0)
706 rss += slot->retstack_max * sizeof (OP *);
707#endif
708 } 731 }
709 } 732 }
710 733
711 return rss; 734 return rss;
712} 735}
… …
802 825
803 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 826 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
804} 827}
805 828
806static void 829static void
830prepare_nop (pTHX_ struct coro_transfer_args *ta)
831{
832 /* kind of mega-hacky, but works */
833 ta->next = ta->prev = (struct coro *)ta;
834}
835
836static int
837slf_check_nop (pTHX_ struct CoroSLF *frame)
838{
839 return 0;
840}
841
842static int
843slf_check_repeat (pTHX_ struct CoroSLF *frame)
844{
845 return 1;
846}
847
848static UNOP coro_setup_op;
849
850static void NOINLINE /* noinline to keep it out of the transfer fast path */
807coro_setup (pTHX_ struct coro *coro) 851coro_setup (pTHX_ struct coro *coro)
808{ 852{
809 /* 853 /*
810 * emulate part of the perl startup here. 854 * emulate part of the perl startup here.
811 */ 855 */
… …
835 PL_rs = newSVsv (GvSV (irsgv)); 879 PL_rs = newSVsv (GvSV (irsgv));
836 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 880 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
837 881
838 { 882 {
839 dSP; 883 dSP;
840 LOGOP myop; 884 UNOP myop;
841 885
842 Zero (&myop, 1, LOGOP); 886 Zero (&myop, 1, UNOP);
843 myop.op_next = Nullop; 887 myop.op_next = Nullop;
888 myop.op_type = OP_ENTERSUB;
844 myop.op_flags = OPf_WANT_VOID; 889 myop.op_flags = OPf_WANT_VOID;
845 890
846 PUSHMARK (SP); 891 PUSHMARK (SP);
847 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 892 PUSHs ((SV *)coro->startcv);
848 PUTBACK; 893 PUTBACK;
849 PL_op = (OP *)&myop; 894 PL_op = (OP *)&myop;
850 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 895 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
851 SPAGAIN;
852 } 896 }
853 897
854 /* this newly created coroutine might be run on an existing cctx which most 898 /* this newly created coroutine might be run on an existing cctx which most
855 * likely was suspended in set_stacklevel, called from entersub. 899 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
856 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
857 * so we ENTER here for symmetry
858 */ 900 */
859 ENTER; 901 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
902 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
903
904 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
905 coro_setup_op.op_next = PL_op;
906 coro_setup_op.op_type = OP_CUSTOM;
907 coro_setup_op.op_ppaddr = pp_slf;
908 /* no flags etc. required, as an init function won't be called */
909
910 PL_op = (OP *)&coro_setup_op;
911
912 /* copy throw, in case it was set before coro_setup */
913 CORO_THROW = coro->except;
860} 914}
861 915
862static void 916static void
863coro_destruct (pTHX_ struct coro *coro) 917coro_destruct (pTHX_ struct coro *coro)
864{ 918{
… …
888 942
889 SvREFCNT_dec (PL_diehook); 943 SvREFCNT_dec (PL_diehook);
890 SvREFCNT_dec (PL_warnhook); 944 SvREFCNT_dec (PL_warnhook);
891 945
892 SvREFCNT_dec (coro->saved_deffh); 946 SvREFCNT_dec (coro->saved_deffh);
893 SvREFCNT_dec (coro->throw); 947 SvREFCNT_dec (coro->rouse_cb);
948 SvREFCNT_dec (coro->invoke_cb);
949 SvREFCNT_dec (coro->invoke_av);
894 950
895 coro_destruct_stacks (aTHX); 951 coro_destruct_stacks (aTHX);
896} 952}
897 953
898static void 954INLINE void
899free_coro_mortal (pTHX) 955free_coro_mortal (pTHX)
900{ 956{
901 if (expect_true (coro_mortal)) 957 if (expect_true (coro_mortal))
902 { 958 {
903 SvREFCNT_dec (coro_mortal); 959 SvREFCNT_dec (coro_mortal);
… …
908static int 964static int
909runops_trace (pTHX) 965runops_trace (pTHX)
910{ 966{
911 COP *oldcop = 0; 967 COP *oldcop = 0;
912 int oldcxix = -2; 968 int oldcxix = -2;
913 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 969 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
914 coro_cctx *cctx = coro->cctx; 970 coro_cctx *cctx = coro->cctx;
915 971
916 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 972 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
917 { 973 {
918 PERL_ASYNC_CHECK (); 974 PERL_ASYNC_CHECK ();
… …
970 { 1026 {
971 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1027 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
972 1028
973 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1029 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
974 { 1030 {
975 runops_proc_t old_runops = PL_runops;
976 dSP; 1031 dSP;
977 GV *gv = CvGV (cx->blk_sub.cv); 1032 GV *gv = CvGV (cx->blk_sub.cv);
978 SV *fullname = sv_2mortal (newSV (0)); 1033 SV *fullname = sv_2mortal (newSV (0));
979 1034
980 if (isGV (gv)) 1035 if (isGV (gv))
… …
985 SAVETMPS; 1040 SAVETMPS;
986 EXTEND (SP, 3); 1041 EXTEND (SP, 3);
987 PUSHMARK (SP); 1042 PUSHMARK (SP);
988 PUSHs (&PL_sv_yes); 1043 PUSHs (&PL_sv_yes);
989 PUSHs (fullname); 1044 PUSHs (fullname);
990 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1045 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
991 PUTBACK; 1046 PUTBACK;
992 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1047 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
993 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1048 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
994 SPAGAIN; 1049 SPAGAIN;
995 FREETMPS; 1050 FREETMPS;
… …
1027 1082
1028 TAINT_NOT; 1083 TAINT_NOT;
1029 return 0; 1084 return 0;
1030} 1085}
1031 1086
1032/* inject a fake call to Coro::State::_cctx_init into the execution */ 1087static struct coro_cctx *cctx_ssl_cctx;
1033/* _cctx_init should be careful, as it could be called at almost any time */ 1088static struct CoroSLF cctx_ssl_frame;
1034/* during execution of a perl program */ 1089
1035/* also initialises PL_top_env */ 1090static void
1091slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1092{
1093 ta->prev = (struct coro *)cctx_ssl_cctx;
1094 ta->next = 0;
1095}
1096
1097static int
1098slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1099{
1100 *frame = cctx_ssl_frame;
1101
1102 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1103}
1104
1105/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1036static void NOINLINE 1106static void NOINLINE
1037cctx_prepare (pTHX_ coro_cctx *cctx) 1107cctx_prepare (pTHX_ coro_cctx *cctx)
1038{ 1108{
1039 dSP;
1040 LOGOP myop;
1041
1042 PL_top_env = &PL_start_env; 1109 PL_top_env = &PL_start_env;
1043 1110
1044 if (cctx->flags & CC_TRACE) 1111 if (cctx->flags & CC_TRACE)
1045 PL_runops = runops_trace; 1112 PL_runops = runops_trace;
1046 1113
1047 Zero (&myop, 1, LOGOP); 1114 /* we already must be executing an SLF op, there is no other valid way
1048 myop.op_next = PL_op; 1115 * that can lead to creation of a new cctx */
1049 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1116 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1117 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1050 1118
1051 PUSHMARK (SP); 1119 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1052 EXTEND (SP, 2); 1120 cctx_ssl_cctx = cctx;
1053 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1121 cctx_ssl_frame = slf_frame;
1054 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1055 PUTBACK;
1056 PL_op = (OP *)&myop;
1057 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1058 SPAGAIN;
1059}
1060 1122
1123 slf_frame.prepare = slf_prepare_set_stacklevel;
1124 slf_frame.check = slf_check_set_stacklevel;
1125}
1126
1061/* the tail of transfer: execute stuff we can onyl do afetr a transfer */ 1127/* the tail of transfer: execute stuff we can only do after a transfer */
1062static void 1128INLINE void
1063transfer_tail (void) 1129transfer_tail (pTHX)
1064{ 1130{
1065 UNLOCK; 1131 free_coro_mortal (aTHX);
1066
1067 if (expect_false (next_has_throw))
1068 {
1069 struct coro *coro = SvSTATE (coro_current);
1070
1071 if (coro->throw)
1072 {
1073 SV *exception = coro->throw;
1074 coro->throw = 0;
1075 sv_setsv (ERRSV, exception);
1076 croak (0);
1077 }
1078 }
1079} 1132}
1080 1133
1081/* 1134/*
1082 * this is a _very_ stripped down perl interpreter ;) 1135 * this is a _very_ stripped down perl interpreter ;)
1083 */ 1136 */
… …
1090# endif 1143# endif
1091#endif 1144#endif
1092 { 1145 {
1093 dTHX; 1146 dTHX;
1094 1147
1095 /* we now skip the entersub that lead to transfer () */ 1148 /* normally we would need to skip the entersub here */
1149 /* not doing so will re-execute it, which is exactly what we want */
1096 PL_op = PL_op->op_next; 1150 /* PL_nop = PL_nop->op_next */
1097 1151
1098 /* inject a fake subroutine call to cctx_init */ 1152 /* inject a fake subroutine call to cctx_init */
1099 cctx_prepare (aTHX_ (coro_cctx *)arg); 1153 cctx_prepare (aTHX_ (coro_cctx *)arg);
1100 1154
1101 /* cctx_run is the alternative tail of transfer () */ 1155 /* cctx_run is the alternative tail of transfer() */
1102 transfer_tail (); 1156 transfer_tail (aTHX);
1103 1157
1104 /* somebody or something will hit me for both perl_run and PL_restartop */ 1158 /* somebody or something will hit me for both perl_run and PL_restartop */
1105 PL_restartop = PL_op; 1159 PL_restartop = PL_op;
1106 perl_run (PL_curinterp); 1160 perl_run (PL_curinterp);
1161 /*
1162 * Unfortunately, there is no way to get at the return values of the
1163 * coro body here, as perl_run destroys these
1164 */
1107 1165
1108 /* 1166 /*
1109 * If perl-run returns we assume exit() was being called or the coro 1167 * If perl-run returns we assume exit() was being called or the coro
1110 * fell off the end, which seems to be the only valid (non-bug) 1168 * fell off the end, which seems to be the only valid (non-bug)
1111 * reason for perl_run to return. We try to exit by jumping to the 1169 * reason for perl_run to return. We try to exit by jumping to the
… …
1125 ++cctx_count; 1183 ++cctx_count;
1126 New (0, cctx, 1, coro_cctx); 1184 New (0, cctx, 1, coro_cctx);
1127 1185
1128 cctx->gen = cctx_gen; 1186 cctx->gen = cctx_gen;
1129 cctx->flags = 0; 1187 cctx->flags = 0;
1130 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel */ 1188 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1131 1189
1132 return cctx; 1190 return cctx;
1133} 1191}
1134 1192
1135/* create a new cctx only suitable as source */ 1193/* create a new cctx only suitable as source */
… …
1157 /* mmap supposedly does allocate-on-write for us */ 1215 /* mmap supposedly does allocate-on-write for us */
1158 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1216 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1159 1217
1160 if (cctx->sptr != (void *)-1) 1218 if (cctx->sptr != (void *)-1)
1161 { 1219 {
1162# if CORO_STACKGUARD 1220 #if CORO_STACKGUARD
1163 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1221 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1164# endif 1222 #endif
1165 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1223 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1166 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1224 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1167 cctx->flags |= CC_MAPPED; 1225 cctx->flags |= CC_MAPPED;
1168 } 1226 }
1169 else 1227 else
1170#endif 1228#endif
1171 { 1229 {
1172 cctx->ssize = cctx_stacksize * (long)sizeof (long); 1230 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1173 New (0, cctx->sptr, cctx_stacksize, long); 1231 New (0, cctx->sptr, cctx_stacksize, long);
1174 1232
1175 if (!cctx->sptr) 1233 if (!cctx->sptr)
1176 { 1234 {
1177 perror ("FATAL: unable to allocate stack for coroutine"); 1235 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1178 _exit (EXIT_FAILURE); 1236 _exit (EXIT_FAILURE);
1179 } 1237 }
1180 1238
1181 stack_start = cctx->sptr; 1239 stack_start = cctx->sptr;
1182 stack_size = cctx->ssize; 1240 stack_size = cctx->ssize;
1183 } 1241 }
1184 1242
1185 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1243 #if CORO_USE_VALGRIND
1244 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1245 #endif
1246
1186 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1247 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1187 1248
1188 return cctx; 1249 return cctx;
1189} 1250}
1190 1251
… …
1198 coro_destroy (&cctx->cctx); 1259 coro_destroy (&cctx->cctx);
1199 1260
1200 /* coro_transfer creates new, empty cctx's */ 1261 /* coro_transfer creates new, empty cctx's */
1201 if (cctx->sptr) 1262 if (cctx->sptr)
1202 { 1263 {
1203#if CORO_USE_VALGRIND 1264 #if CORO_USE_VALGRIND
1204 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1265 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1205#endif 1266 #endif
1206 1267
1207#if HAVE_MMAP 1268#if HAVE_MMAP
1208 if (cctx->flags & CC_MAPPED) 1269 if (cctx->flags & CC_MAPPED)
1209 munmap (cctx->sptr, cctx->ssize); 1270 munmap (cctx->sptr, cctx->ssize);
1210 else 1271 else
… …
1237} 1298}
1238 1299
1239static void 1300static void
1240cctx_put (coro_cctx *cctx) 1301cctx_put (coro_cctx *cctx)
1241{ 1302{
1242 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1303 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1243 1304
1244 /* free another cctx if overlimit */ 1305 /* free another cctx if overlimit */
1245 if (expect_false (cctx_idle >= cctx_max_idle)) 1306 if (expect_false (cctx_idle >= cctx_max_idle))
1246 { 1307 {
1247 coro_cctx *first = cctx_first; 1308 coro_cctx *first = cctx_first;
… …
1259/** coroutine switching *****************************************************/ 1320/** coroutine switching *****************************************************/
1260 1321
1261static void 1322static void
1262transfer_check (pTHX_ struct coro *prev, struct coro *next) 1323transfer_check (pTHX_ struct coro *prev, struct coro *next)
1263{ 1324{
1325 /* TODO: throwing up here is considered harmful */
1326
1264 if (expect_true (prev != next)) 1327 if (expect_true (prev != next))
1265 { 1328 {
1266 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1329 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1267 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1330 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1268 1331
1269 if (expect_false (next->flags & CF_RUNNING)) 1332 if (expect_false (next->flags & CF_RUNNING))
1270 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1333 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1271 1334
1272 if (expect_false (next->flags & CF_DESTROYED)) 1335 if (expect_false (next->flags & CF_DESTROYED))
1273 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1336 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1274 1337
1275#if !PERL_VERSION_ATLEAST (5,10,0) 1338#if !PERL_VERSION_ATLEAST (5,10,0)
1276 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1339 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1277 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1340 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1278#endif 1341#endif
1279 } 1342 }
1280} 1343}
1281 1344
1282/* always use the TRANSFER macro */ 1345/* always use the TRANSFER macro */
1283static void NOINLINE 1346static void NOINLINE /* noinline so we have a fixed stackframe */
1284transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1347transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1285{ 1348{
1286 dSTACKLEVEL; 1349 dSTACKLEVEL;
1287 1350
1288 /* sometimes transfer is only called to set idle_sp */ 1351 /* sometimes transfer is only called to set idle_sp */
… …
1303 prev->flags |= CF_RUNNING; 1366 prev->flags |= CF_RUNNING;
1304 } 1367 }
1305 1368
1306 prev->flags &= ~CF_RUNNING; 1369 prev->flags &= ~CF_RUNNING;
1307 next->flags |= CF_RUNNING; 1370 next->flags |= CF_RUNNING;
1308
1309 LOCK;
1310 1371
1311 /* first get rid of the old state */ 1372 /* first get rid of the old state */
1312 save_perl (aTHX_ prev); 1373 save_perl (aTHX_ prev);
1313 1374
1314 if (expect_false (next->flags & CF_NEW)) 1375 if (expect_false (next->flags & CF_NEW))
… …
1321 else 1382 else
1322 load_perl (aTHX_ next); 1383 load_perl (aTHX_ next);
1323 1384
1324 prev__cctx = prev->cctx; 1385 prev__cctx = prev->cctx;
1325 1386
1326 if (prev__cctx->idle_sp == STACKLEVEL) asm volatile("");//D
1327
1328 /* possibly "free" the cctx */ 1387 /* possibly untie and reuse the cctx */
1329 if (expect_true ( 1388 if (expect_true (
1330 prev__cctx->idle_sp == STACKLEVEL 1389 prev__cctx->idle_sp == STACKLEVEL
1331 && !(prev__cctx->flags & CC_TRACE) 1390 && !(prev__cctx->flags & CC_TRACE)
1332 && !force_cctx 1391 && !force_cctx
1333 )) 1392 ))
1334 { 1393 {
1335 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1394 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1336 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1395 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1337 1396
1338 prev->cctx = 0; 1397 prev->cctx = 0;
1339 1398
1340 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1399 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1341 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1400 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1348 1407
1349 ++next->usecount; 1408 ++next->usecount;
1350 1409
1351 if (expect_true (!next->cctx)) 1410 if (expect_true (!next->cctx))
1352 next->cctx = cctx_get (aTHX); 1411 next->cctx = cctx_get (aTHX);
1353
1354 next_has_throw = !!next->throw;
1355 1412
1356 if (expect_false (prev__cctx != next->cctx)) 1413 if (expect_false (prev__cctx != next->cctx))
1357 { 1414 {
1358 prev__cctx->top_env = PL_top_env; 1415 prev__cctx->top_env = PL_top_env;
1359 PL_top_env = next->cctx->top_env; 1416 PL_top_env = next->cctx->top_env;
1360 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1417 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1361 } 1418 }
1362 1419
1363 free_coro_mortal (aTHX);
1364 UNLOCK;
1365
1366 transfer_tail (); 1420 transfer_tail (aTHX);
1367 } 1421 }
1368} 1422}
1369
1370struct transfer_args
1371{
1372 struct coro *prev, *next;
1373};
1374 1423
1375#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1424#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1376#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1425#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1377 1426
1378/** high level stuff ********************************************************/ 1427/** high level stuff ********************************************************/
… …
1380static int 1429static int
1381coro_state_destroy (pTHX_ struct coro *coro) 1430coro_state_destroy (pTHX_ struct coro *coro)
1382{ 1431{
1383 if (coro->flags & CF_DESTROYED) 1432 if (coro->flags & CF_DESTROYED)
1384 return 0; 1433 return 0;
1434
1435 if (coro->on_destroy)
1436 coro->on_destroy (aTHX_ coro);
1385 1437
1386 coro->flags |= CF_DESTROYED; 1438 coro->flags |= CF_DESTROYED;
1387 1439
1388 if (coro->flags & CF_READY) 1440 if (coro->flags & CF_READY)
1389 { 1441 {
1390 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1442 /* reduce nready, as destroying a ready coro effectively unreadies it */
1391 /* alternative: look through all ready queues and remove the coro */ 1443 /* alternative: look through all ready queues and remove the coro */
1392 LOCK;
1393 --coro_nready; 1444 --coro_nready;
1394 UNLOCK;
1395 } 1445 }
1396 else 1446 else
1397 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1447 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1398 1448
1399 if (coro->mainstack && coro->mainstack != main_mainstack) 1449 if (coro->mainstack && coro->mainstack != main_mainstack)
1400 { 1450 {
1401 struct coro temp; 1451 struct coro temp;
1402 1452
1403 if (coro->flags & CF_RUNNING) 1453 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1404 croak ("FATAL: tried to destroy currently running coroutine");
1405 1454
1406 save_perl (aTHX_ &temp); 1455 save_perl (aTHX_ &temp);
1407 load_perl (aTHX_ coro); 1456 load_perl (aTHX_ coro);
1408 1457
1409 coro_destruct (aTHX_ coro); 1458 coro_destruct (aTHX_ coro);
… …
1412 1461
1413 coro->slot = 0; 1462 coro->slot = 0;
1414 } 1463 }
1415 1464
1416 cctx_destroy (coro->cctx); 1465 cctx_destroy (coro->cctx);
1466 SvREFCNT_dec (coro->startcv);
1417 SvREFCNT_dec (coro->args); 1467 SvREFCNT_dec (coro->args);
1468 SvREFCNT_dec (CORO_THROW);
1418 1469
1419 if (coro->next) coro->next->prev = coro->prev; 1470 if (coro->next) coro->next->prev = coro->prev;
1420 if (coro->prev) coro->prev->next = coro->next; 1471 if (coro->prev) coro->prev->next = coro->next;
1421 if (coro == coro_first) coro_first = coro->next; 1472 if (coro == coro_first) coro_first = coro->next;
1422 1473
… …
1460# define MGf_DUP 0 1511# define MGf_DUP 0
1461#endif 1512#endif
1462}; 1513};
1463 1514
1464static void 1515static void
1465prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1516prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1466{ 1517{
1467 ta->prev = SvSTATE (prev_sv); 1518 ta->prev = SvSTATE (prev_sv);
1468 ta->next = SvSTATE (next_sv); 1519 ta->next = SvSTATE (next_sv);
1469 TRANSFER_CHECK (*ta); 1520 TRANSFER_CHECK (*ta);
1470} 1521}
1471 1522
1472static void 1523static void
1473api_transfer (SV *prev_sv, SV *next_sv) 1524api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1474{ 1525{
1475 dTHX;
1476 struct transfer_args ta; 1526 struct coro_transfer_args ta;
1477 1527
1478 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1528 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1479 TRANSFER (ta, 1); 1529 TRANSFER (ta, 1);
1480} 1530}
1481 1531
1532/*****************************************************************************/
1533/* gensub: simple closure generation utility */
1534
1535#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1536
1537/* create a closure from XS, returns a code reference */
1538/* the arg can be accessed via GENSUB_ARG from the callback */
1539/* the callback must use dXSARGS/XSRETURN */
1540static SV *
1541gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1542{
1543 CV *cv = (CV *)newSV (0);
1544
1545 sv_upgrade ((SV *)cv, SVt_PVCV);
1546
1547 CvANON_on (cv);
1548 CvISXSUB_on (cv);
1549 CvXSUB (cv) = xsub;
1550 GENSUB_ARG = arg;
1551
1552 return newRV_noinc ((SV *)cv);
1553}
1554
1482/** Coro ********************************************************************/ 1555/** Coro ********************************************************************/
1483 1556
1484static void 1557INLINE void
1485coro_enq (pTHX_ SV *coro_sv) 1558coro_enq (pTHX_ struct coro *coro)
1486{ 1559{
1487 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1560 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1488} 1561}
1489 1562
1490static SV * 1563INLINE SV *
1491coro_deq (pTHX) 1564coro_deq (pTHX)
1492{ 1565{
1493 int prio; 1566 int prio;
1494 1567
1495 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1568 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1498 1571
1499 return 0; 1572 return 0;
1500} 1573}
1501 1574
1502static int 1575static int
1503api_ready (SV *coro_sv) 1576api_ready (pTHX_ SV *coro_sv)
1504{ 1577{
1505 dTHX;
1506 struct coro *coro; 1578 struct coro *coro;
1507 SV *sv_hook; 1579 SV *sv_hook;
1508 void (*xs_hook)(void); 1580 void (*xs_hook)(void);
1509 1581
1510 if (SvROK (coro_sv)) 1582 if (SvROK (coro_sv))
… …
1515 if (coro->flags & CF_READY) 1587 if (coro->flags & CF_READY)
1516 return 0; 1588 return 0;
1517 1589
1518 coro->flags |= CF_READY; 1590 coro->flags |= CF_READY;
1519 1591
1520 LOCK;
1521
1522 sv_hook = coro_nready ? 0 : coro_readyhook; 1592 sv_hook = coro_nready ? 0 : coro_readyhook;
1523 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1593 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1524 1594
1525 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1595 coro_enq (aTHX_ coro);
1526 ++coro_nready; 1596 ++coro_nready;
1527 1597
1528 UNLOCK;
1529
1530 if (sv_hook) 1598 if (sv_hook)
1531 { 1599 {
1532 dSP; 1600 dSP;
1533 1601
1534 ENTER; 1602 ENTER;
1535 SAVETMPS; 1603 SAVETMPS;
1536 1604
1537 PUSHMARK (SP); 1605 PUSHMARK (SP);
1538 PUTBACK; 1606 PUTBACK;
1539 call_sv (sv_hook, G_DISCARD); 1607 call_sv (sv_hook, G_VOID | G_DISCARD);
1540 SPAGAIN;
1541 1608
1542 FREETMPS; 1609 FREETMPS;
1543 LEAVE; 1610 LEAVE;
1544 } 1611 }
1545 1612
… …
1548 1615
1549 return 1; 1616 return 1;
1550} 1617}
1551 1618
1552static int 1619static int
1553api_is_ready (SV *coro_sv) 1620api_is_ready (pTHX_ SV *coro_sv)
1554{ 1621{
1555 dTHX;
1556 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1622 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1557} 1623}
1558 1624
1625/* expects to own a reference to next->hv */
1626INLINE void
1627prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1628{
1629 SV *prev_sv = SvRV (coro_current);
1630
1631 ta->prev = SvSTATE_hv (prev_sv);
1632 ta->next = next;
1633
1634 TRANSFER_CHECK (*ta);
1635
1636 SvRV_set (coro_current, (SV *)next->hv);
1637
1638 free_coro_mortal (aTHX);
1639 coro_mortal = prev_sv;
1640}
1641
1559static void 1642static void
1560prepare_schedule (pTHX_ struct transfer_args *ta) 1643prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1561{ 1644{
1562 SV *prev_sv, *next_sv;
1563
1564 for (;;) 1645 for (;;)
1565 { 1646 {
1566 LOCK;
1567 next_sv = coro_deq (aTHX); 1647 SV *next_sv = coro_deq (aTHX);
1568 1648
1569 /* nothing to schedule: call the idle handler */
1570 if (expect_false (!next_sv)) 1649 if (expect_true (next_sv))
1571 { 1650 {
1651 struct coro *next = SvSTATE_hv (next_sv);
1652
1653 /* cannot transfer to destroyed coros, skip and look for next */
1654 if (expect_false (next->flags & CF_DESTROYED))
1655 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1656 else
1657 {
1658 next->flags &= ~CF_READY;
1659 --coro_nready;
1660
1661 prepare_schedule_to (aTHX_ ta, next);
1662 break;
1663 }
1664 }
1665 else
1666 {
1667 /* nothing to schedule: call the idle handler */
1572 dSP; 1668 dSP;
1573 UNLOCK;
1574 1669
1575 ENTER; 1670 ENTER;
1576 SAVETMPS; 1671 SAVETMPS;
1577 1672
1578 PUSHMARK (SP); 1673 PUSHMARK (SP);
1579 PUTBACK; 1674 PUTBACK;
1580 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1675 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1581 SPAGAIN;
1582 1676
1583 FREETMPS; 1677 FREETMPS;
1584 LEAVE; 1678 LEAVE;
1585 continue;
1586 } 1679 }
1587
1588 ta->next = SvSTATE (next_sv);
1589
1590 /* cannot transfer to destroyed coros, skip and look for next */
1591 if (expect_false (ta->next->flags & CF_DESTROYED))
1592 {
1593 UNLOCK;
1594 SvREFCNT_dec (next_sv);
1595 /* coro_nready is already taken care of by destroy */
1596 continue;
1597 }
1598
1599 --coro_nready;
1600 UNLOCK;
1601 break;
1602 } 1680 }
1603
1604 /* free this only after the transfer */
1605 prev_sv = SvRV (coro_current);
1606 ta->prev = SvSTATE (prev_sv);
1607 TRANSFER_CHECK (*ta);
1608 assert (ta->next->flags & CF_READY);
1609 ta->next->flags &= ~CF_READY;
1610 SvRV_set (coro_current, next_sv);
1611
1612 LOCK;
1613 free_coro_mortal (aTHX);
1614 coro_mortal = prev_sv;
1615 UNLOCK;
1616} 1681}
1617 1682
1618static void 1683INLINE void
1619prepare_cede (pTHX_ struct transfer_args *ta) 1684prepare_cede (pTHX_ struct coro_transfer_args *ta)
1620{ 1685{
1621 api_ready (coro_current); 1686 api_ready (aTHX_ coro_current);
1622 prepare_schedule (aTHX_ ta); 1687 prepare_schedule (aTHX_ ta);
1623} 1688}
1624 1689
1690INLINE void
1691prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1692{
1693 SV *prev = SvRV (coro_current);
1694
1695 if (coro_nready)
1696 {
1697 prepare_schedule (aTHX_ ta);
1698 api_ready (aTHX_ prev);
1699 }
1700 else
1701 prepare_nop (aTHX_ ta);
1702}
1703
1704static void
1705api_schedule (pTHX)
1706{
1707 struct coro_transfer_args ta;
1708
1709 prepare_schedule (aTHX_ &ta);
1710 TRANSFER (ta, 1);
1711}
1712
1713static void
1714api_schedule_to (pTHX_ SV *coro_sv)
1715{
1716 struct coro_transfer_args ta;
1717 struct coro *next = SvSTATE (coro_sv);
1718
1719 SvREFCNT_inc_NN (coro_sv);
1720 prepare_schedule_to (aTHX_ &ta, next);
1721}
1722
1625static int 1723static int
1626prepare_cede_notself (pTHX_ struct transfer_args *ta) 1724api_cede (pTHX)
1627{ 1725{
1628 if (coro_nready) 1726 struct coro_transfer_args ta;
1629 { 1727
1630 SV *prev = SvRV (coro_current);
1631 prepare_schedule (aTHX_ ta); 1728 prepare_cede (aTHX_ &ta);
1632 api_ready (prev); 1729
1730 if (expect_true (ta.prev != ta.next))
1731 {
1732 TRANSFER (ta, 1);
1633 return 1; 1733 return 1;
1634 } 1734 }
1635 else 1735 else
1636 return 0; 1736 return 0;
1637} 1737}
1638 1738
1639static void
1640api_schedule (void)
1641{
1642 dTHX;
1643 struct transfer_args ta;
1644
1645 prepare_schedule (aTHX_ &ta);
1646 TRANSFER (ta, 1);
1647}
1648
1649static int 1739static int
1650api_cede (void) 1740api_cede_notself (pTHX)
1651{ 1741{
1652 dTHX; 1742 if (coro_nready)
1743 {
1653 struct transfer_args ta; 1744 struct coro_transfer_args ta;
1654 1745
1655 prepare_cede (aTHX_ &ta); 1746 prepare_cede_notself (aTHX_ &ta);
1656
1657 if (expect_true (ta.prev != ta.next))
1658 {
1659 TRANSFER (ta, 1); 1747 TRANSFER (ta, 1);
1660 return 1; 1748 return 1;
1661 } 1749 }
1662 else 1750 else
1663 return 0; 1751 return 0;
1664} 1752}
1665 1753
1666static int 1754static void
1667api_cede_notself (void)
1668{
1669 dTHX;
1670 struct transfer_args ta;
1671
1672 if (prepare_cede_notself (aTHX_ &ta))
1673 {
1674 TRANSFER (ta, 1);
1675 return 1;
1676 }
1677 else
1678 return 0;
1679}
1680
1681static void
1682api_trace (SV *coro_sv, int flags) 1755api_trace (pTHX_ SV *coro_sv, int flags)
1683{ 1756{
1684 dTHX;
1685 struct coro *coro = SvSTATE (coro_sv); 1757 struct coro *coro = SvSTATE (coro_sv);
1686 1758
1687 if (flags & CC_TRACE) 1759 if (flags & CC_TRACE)
1688 { 1760 {
1689 if (!coro->cctx) 1761 if (!coro->cctx)
1690 coro->cctx = cctx_new_run (); 1762 coro->cctx = cctx_new_run ();
1691 else if (!(coro->cctx->flags & CC_TRACE)) 1763 else if (!(coro->cctx->flags & CC_TRACE))
1692 croak ("cannot enable tracing on coroutine with custom stack"); 1764 croak ("cannot enable tracing on coroutine with custom stack,");
1693 1765
1694 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1766 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1695 } 1767 }
1696 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1768 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1697 { 1769 {
… …
1702 else 1774 else
1703 coro->slot->runops = RUNOPS_DEFAULT; 1775 coro->slot->runops = RUNOPS_DEFAULT;
1704 } 1776 }
1705} 1777}
1706 1778
1707#if 0 1779static void
1780coro_call_on_destroy (pTHX_ struct coro *coro)
1781{
1782 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1783 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1784
1785 if (on_destroyp)
1786 {
1787 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1788
1789 while (AvFILLp (on_destroy) >= 0)
1790 {
1791 dSP; /* don't disturb outer sp */
1792 SV *cb = av_pop (on_destroy);
1793
1794 PUSHMARK (SP);
1795
1796 if (statusp)
1797 {
1798 int i;
1799 AV *status = (AV *)SvRV (*statusp);
1800 EXTEND (SP, AvFILLp (status) + 1);
1801
1802 for (i = 0; i <= AvFILLp (status); ++i)
1803 PUSHs (AvARRAY (status)[i]);
1804 }
1805
1806 PUTBACK;
1807 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1808 }
1809 }
1810}
1811
1812static void
1813slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1814{
1815 int i;
1816 HV *hv = (HV *)SvRV (coro_current);
1817 AV *av = newAV ();
1818
1819 av_extend (av, items - 1);
1820 for (i = 0; i < items; ++i)
1821 av_push (av, SvREFCNT_inc_NN (arg [i]));
1822
1823 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1824
1825 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1826 api_ready (aTHX_ sv_manager);
1827
1828 frame->prepare = prepare_schedule;
1829 frame->check = slf_check_repeat;
1830}
1831
1832/*****************************************************************************/
1833/* async pool handler */
1834
1708static int 1835static int
1709coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1836slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1710{ 1837{
1711 AV *padlist; 1838 HV *hv = (HV *)SvRV (coro_current);
1712 AV *av = (AV *)mg->mg_obj; 1839 struct coro *coro = (struct coro *)frame->data;
1713 1840
1714 abort (); 1841 if (!coro->invoke_cb)
1842 return 1; /* loop till we have invoke */
1843 else
1844 {
1845 hv_store (hv, "desc", sizeof ("desc") - 1,
1846 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1847
1848 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1849
1850 {
1851 dSP;
1852 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1853 PUTBACK;
1854 }
1855
1856 SvREFCNT_dec (GvAV (PL_defgv));
1857 GvAV (PL_defgv) = coro->invoke_av;
1858 coro->invoke_av = 0;
1859
1860 return 0;
1861 }
1862}
1863
1864static void
1865slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 HV *hv = (HV *)SvRV (coro_current);
1868 struct coro *coro = SvSTATE_hv ((SV *)hv);
1869
1870 if (expect_true (coro->saved_deffh))
1871 {
1872 /* subsequent iteration */
1873 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1874 coro->saved_deffh = 0;
1875
1876 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1877 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1878 {
1879 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1880 coro->invoke_av = newAV ();
1881
1882 frame->prepare = prepare_nop;
1883 }
1884 else
1885 {
1886 av_clear (GvAV (PL_defgv));
1887 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1888
1889 coro->prio = 0;
1890
1891 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1892 api_trace (aTHX_ coro_current, 0);
1893
1894 frame->prepare = prepare_schedule;
1895 av_push (av_async_pool, SvREFCNT_inc (hv));
1896 }
1897 }
1898 else
1899 {
1900 /* first iteration, simply fall through */
1901 frame->prepare = prepare_nop;
1902 }
1903
1904 frame->check = slf_check_pool_handler;
1905 frame->data = (void *)coro;
1906}
1907
1908/*****************************************************************************/
1909/* rouse callback */
1910
1911#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1912
1913static void
1914coro_rouse_callback (pTHX_ CV *cv)
1915{
1916 dXSARGS;
1917 SV *data = (SV *)GENSUB_ARG;
1918
1919 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1920 {
1921 /* first call, set args */
1922 AV *av = newAV ();
1923 SV *coro = SvRV (data);
1924
1925 SvRV_set (data, (SV *)av);
1926 api_ready (aTHX_ coro);
1927 SvREFCNT_dec (coro);
1928
1929 /* better take a full copy of the arguments */
1930 while (items--)
1931 av_store (av, items, newSVsv (ST (items)));
1932 }
1933
1934 XSRETURN_EMPTY;
1935}
1936
1937static int
1938slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1939{
1940 SV *data = (SV *)frame->data;
1941
1942 if (CORO_THROW)
1943 return 0;
1944
1945 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1946 return 1;
1947
1948 /* now push all results on the stack */
1949 {
1950 dSP;
1951 AV *av = (AV *)SvRV (data);
1952 int i;
1953
1954 EXTEND (SP, AvFILLp (av) + 1);
1955 for (i = 0; i <= AvFILLp (av); ++i)
1956 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1957
1958 /* we have stolen the elements, so ste length to zero and free */
1959 AvFILLp (av) = -1;
1960 av_undef (av);
1961
1962 PUTBACK;
1963 }
1715 1964
1716 return 0; 1965 return 0;
1717} 1966}
1718 1967
1719static MGVTBL coro_gensub_vtbl = { 1968static void
1720 0, 0, 0, 0, 1969slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1721 coro_gensub_free 1970{
1722}; 1971 SV *cb;
1723#endif 1972
1973 if (items)
1974 cb = arg [0];
1975 else
1976 {
1977 struct coro *coro = SvSTATE_current;
1978
1979 if (!coro->rouse_cb)
1980 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1981
1982 cb = sv_2mortal (coro->rouse_cb);
1983 coro->rouse_cb = 0;
1984 }
1985
1986 if (!SvROK (cb)
1987 || SvTYPE (SvRV (cb)) != SVt_PVCV
1988 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1989 croak ("Coro::rouse_wait called with illegal callback argument,");
1990
1991 {
1992 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1993 SV *data = (SV *)GENSUB_ARG;
1994
1995 frame->data = (void *)data;
1996 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1997 frame->check = slf_check_rouse_wait;
1998 }
1999}
2000
2001static SV *
2002coro_new_rouse_cb (pTHX)
2003{
2004 HV *hv = (HV *)SvRV (coro_current);
2005 struct coro *coro = SvSTATE_hv (hv);
2006 SV *data = newRV_inc ((SV *)hv);
2007 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2008
2009 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2010 SvREFCNT_dec (data); /* magicext increases the refcount */
2011
2012 SvREFCNT_dec (coro->rouse_cb);
2013 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2014
2015 return cb;
2016}
2017
2018/*****************************************************************************/
2019/* schedule-like-function opcode (SLF) */
2020
2021static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2022static const CV *slf_cv;
2023static SV **slf_argv;
2024static int slf_argc, slf_arga; /* count, allocated */
2025static I32 slf_ax; /* top of stack, for restore */
2026
2027/* this restores the stack in the case we patched the entersub, to */
2028/* recreate the stack frame as perl will on following calls */
2029/* since entersub cleared the stack */
2030static OP *
2031pp_restore (pTHX)
2032{
2033 int i;
2034 SV **SP = PL_stack_base + slf_ax;
2035
2036 PUSHMARK (SP);
2037
2038 EXTEND (SP, slf_argc + 1);
2039
2040 for (i = 0; i < slf_argc; ++i)
2041 PUSHs (sv_2mortal (slf_argv [i]));
2042
2043 PUSHs ((SV *)CvGV (slf_cv));
2044
2045 RETURNOP (slf_restore.op_first);
2046}
2047
2048static void
2049slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2050{
2051 SV **arg = (SV **)slf_frame.data;
2052
2053 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2054}
2055
2056static void
2057slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{
2059 if (items != 2)
2060 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2061
2062 frame->prepare = slf_prepare_transfer;
2063 frame->check = slf_check_nop;
2064 frame->data = (void *)arg; /* let's hope it will stay valid */
2065}
2066
2067static void
2068slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2069{
2070 frame->prepare = prepare_schedule;
2071 frame->check = slf_check_nop;
2072}
2073
2074static void
2075slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2076{
2077 struct coro *next = (struct coro *)slf_frame.data;
2078
2079 SvREFCNT_inc_NN (next->hv);
2080 prepare_schedule_to (aTHX_ ta, next);
2081}
2082
2083static void
2084slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2085{
2086 if (!items)
2087 croak ("Coro::schedule_to expects a coroutine argument, caught");
2088
2089 frame->data = (void *)SvSTATE (arg [0]);
2090 frame->prepare = slf_prepare_schedule_to;
2091 frame->check = slf_check_nop;
2092}
2093
2094static void
2095slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{
2097 api_ready (aTHX_ SvRV (coro_current));
2098
2099 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2100}
2101
2102static void
2103slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2104{
2105 frame->prepare = prepare_cede;
2106 frame->check = slf_check_nop;
2107}
2108
2109static void
2110slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2111{
2112 frame->prepare = prepare_cede_notself;
2113 frame->check = slf_check_nop;
2114}
2115
2116/*
2117 * these not obviously related functions are all rolled into one
2118 * function to increase chances that they all will call transfer with the same
2119 * stack offset
2120 * SLF stands for "schedule-like-function".
2121 */
2122static OP *
2123pp_slf (pTHX)
2124{
2125 I32 checkmark; /* mark SP to see how many elements check has pushed */
2126
2127 /* set up the slf frame, unless it has already been set-up */
2128 /* the latter happens when a new coro has been started */
2129 /* or when a new cctx was attached to an existing coroutine */
2130 if (expect_true (!slf_frame.prepare))
2131 {
2132 /* first iteration */
2133 dSP;
2134 SV **arg = PL_stack_base + TOPMARK + 1;
2135 int items = SP - arg; /* args without function object */
2136 SV *gv = *sp;
2137
2138 /* do a quick consistency check on the "function" object, and if it isn't */
2139 /* for us, divert to the real entersub */
2140 if (SvTYPE (gv) != SVt_PVGV
2141 || !GvCV (gv)
2142 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2143 return PL_ppaddr[OP_ENTERSUB](aTHX);
2144
2145 if (!(PL_op->op_flags & OPf_STACKED))
2146 {
2147 /* ampersand-form of call, use @_ instead of stack */
2148 AV *av = GvAV (PL_defgv);
2149 arg = AvARRAY (av);
2150 items = AvFILLp (av) + 1;
2151 }
2152
2153 /* now call the init function, which needs to set up slf_frame */
2154 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2155 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2156
2157 /* pop args */
2158 SP = PL_stack_base + POPMARK;
2159
2160 PUTBACK;
2161 }
2162
2163 /* now that we have a slf_frame, interpret it! */
2164 /* we use a callback system not to make the code needlessly */
2165 /* complicated, but so we can run multiple perl coros from one cctx */
2166
2167 do
2168 {
2169 struct coro_transfer_args ta;
2170
2171 slf_frame.prepare (aTHX_ &ta);
2172 TRANSFER (ta, 0);
2173
2174 checkmark = PL_stack_sp - PL_stack_base;
2175 }
2176 while (slf_frame.check (aTHX_ &slf_frame));
2177
2178 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2179
2180 /* exception handling */
2181 if (expect_false (CORO_THROW))
2182 {
2183 SV *exception = sv_2mortal (CORO_THROW);
2184
2185 CORO_THROW = 0;
2186 sv_setsv (ERRSV, exception);
2187 croak (0);
2188 }
2189
2190 /* return value handling - mostly like entersub */
2191 /* make sure we put something on the stack in scalar context */
2192 if (GIMME_V == G_SCALAR)
2193 {
2194 dSP;
2195 SV **bot = PL_stack_base + checkmark;
2196
2197 if (sp == bot) /* too few, push undef */
2198 bot [1] = &PL_sv_undef;
2199 else if (sp != bot + 1) /* too many, take last one */
2200 bot [1] = *sp;
2201
2202 SP = bot + 1;
2203
2204 PUTBACK;
2205 }
2206
2207 return NORMAL;
2208}
2209
2210static void
2211api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2212{
2213 int i;
2214 SV **arg = PL_stack_base + ax;
2215 int items = PL_stack_sp - arg + 1;
2216
2217 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2218
2219 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2220 && PL_op->op_ppaddr != pp_slf)
2221 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2222
2223 CvFLAGS (cv) |= CVf_SLF;
2224 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2225 slf_cv = cv;
2226
2227 /* we patch the op, and then re-run the whole call */
2228 /* we have to put the same argument on the stack for this to work */
2229 /* and this will be done by pp_restore */
2230 slf_restore.op_next = (OP *)&slf_restore;
2231 slf_restore.op_type = OP_CUSTOM;
2232 slf_restore.op_ppaddr = pp_restore;
2233 slf_restore.op_first = PL_op;
2234
2235 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2236
2237 if (PL_op->op_flags & OPf_STACKED)
2238 {
2239 if (items > slf_arga)
2240 {
2241 slf_arga = items;
2242 free (slf_argv);
2243 slf_argv = malloc (slf_arga * sizeof (SV *));
2244 }
2245
2246 slf_argc = items;
2247
2248 for (i = 0; i < items; ++i)
2249 slf_argv [i] = SvREFCNT_inc (arg [i]);
2250 }
2251 else
2252 slf_argc = 0;
2253
2254 PL_op->op_ppaddr = pp_slf;
2255 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2256
2257 PL_op = (OP *)&slf_restore;
2258}
1724 2259
1725/*****************************************************************************/ 2260/*****************************************************************************/
1726/* PerlIO::cede */ 2261/* PerlIO::cede */
1727 2262
1728typedef struct 2263typedef struct
… …
1756 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2291 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1757 double now = nvtime (); 2292 double now = nvtime ();
1758 2293
1759 if (now >= self->next) 2294 if (now >= self->next)
1760 { 2295 {
1761 api_cede (); 2296 api_cede (aTHX);
1762 self->next = now + self->every; 2297 self->next = now + self->every;
1763 } 2298 }
1764 2299
1765 return PerlIOBuf_flush (aTHX_ f); 2300 return PerlIOBuf_flush (aTHX_ f);
1766} 2301}
… …
1795 PerlIOBuf_get_ptr, 2330 PerlIOBuf_get_ptr,
1796 PerlIOBuf_get_cnt, 2331 PerlIOBuf_get_cnt,
1797 PerlIOBuf_set_ptrcnt, 2332 PerlIOBuf_set_ptrcnt,
1798}; 2333};
1799 2334
2335/*****************************************************************************/
2336/* Coro::Semaphore & Coro::Signal */
2337
2338static SV *
2339coro_waitarray_new (pTHX_ int count)
2340{
2341 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2342 AV *av = newAV ();
2343 SV **ary;
2344
2345 /* unfortunately, building manually saves memory */
2346 Newx (ary, 2, SV *);
2347 AvALLOC (av) = ary;
2348 /*AvARRAY (av) = ary;*/
2349 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2350 AvMAX (av) = 1;
2351 AvFILLp (av) = 0;
2352 ary [0] = newSViv (count);
2353
2354 return newRV_noinc ((SV *)av);
2355}
2356
2357/* semaphore */
2358
2359static void
2360coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2361{
2362 SV *count_sv = AvARRAY (av)[0];
2363 IV count = SvIVX (count_sv);
2364
2365 count += adjust;
2366 SvIVX (count_sv) = count;
2367
2368 /* now wake up as many waiters as are expected to lock */
2369 while (count > 0 && AvFILLp (av) > 0)
2370 {
2371 SV *cb;
2372
2373 /* swap first two elements so we can shift a waiter */
2374 AvARRAY (av)[0] = AvARRAY (av)[1];
2375 AvARRAY (av)[1] = count_sv;
2376 cb = av_shift (av);
2377
2378 if (SvOBJECT (cb))
2379 {
2380 api_ready (aTHX_ cb);
2381 --count;
2382 }
2383 else if (SvTYPE (cb) == SVt_PVCV)
2384 {
2385 dSP;
2386 PUSHMARK (SP);
2387 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2388 PUTBACK;
2389 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2390 }
2391
2392 SvREFCNT_dec (cb);
2393 }
2394}
2395
2396static void
2397coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2398{
2399 /* call $sem->adjust (0) to possibly wake up some other waiters */
2400 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2401}
2402
2403static int
2404slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2405{
2406 AV *av = (AV *)frame->data;
2407 SV *count_sv = AvARRAY (av)[0];
2408
2409 /* if we are about to throw, don't actually acquire the lock, just throw */
2410 if (CORO_THROW)
2411 return 0;
2412 else if (SvIVX (count_sv) > 0)
2413 {
2414 SvSTATE_current->on_destroy = 0;
2415
2416 if (acquire)
2417 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2418 else
2419 coro_semaphore_adjust (aTHX_ av, 0);
2420
2421 return 0;
2422 }
2423 else
2424 {
2425 int i;
2426 /* if we were woken up but can't down, we look through the whole */
2427 /* waiters list and only add us if we aren't in there already */
2428 /* this avoids some degenerate memory usage cases */
2429
2430 for (i = 1; i <= AvFILLp (av); ++i)
2431 if (AvARRAY (av)[i] == SvRV (coro_current))
2432 return 1;
2433
2434 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2435 return 1;
2436 }
2437}
2438
2439static int
2440slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2441{
2442 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2443}
2444
2445static int
2446slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2447{
2448 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2449}
2450
2451static void
2452slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2453{
2454 AV *av = (AV *)SvRV (arg [0]);
2455
2456 if (SvIVX (AvARRAY (av)[0]) > 0)
2457 {
2458 frame->data = (void *)av;
2459 frame->prepare = prepare_nop;
2460 }
2461 else
2462 {
2463 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2464
2465 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2466 frame->prepare = prepare_schedule;
2467
2468 /* to avoid race conditions when a woken-up coro gets terminated */
2469 /* we arrange for a temporary on_destroy that calls adjust (0) */
2470 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2471 }
2472}
2473
2474static void
2475slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2476{
2477 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2478 frame->check = slf_check_semaphore_down;
2479}
2480
2481static void
2482slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2483{
2484 if (items >= 2)
2485 {
2486 /* callback form */
2487 AV *av = (AV *)SvRV (arg [0]);
2488 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2489
2490 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2491
2492 if (SvIVX (AvARRAY (av)[0]) > 0)
2493 coro_semaphore_adjust (aTHX_ av, 0);
2494
2495 frame->prepare = prepare_nop;
2496 frame->check = slf_check_nop;
2497 }
2498 else
2499 {
2500 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2501 frame->check = slf_check_semaphore_wait;
2502 }
2503}
2504
2505/* signal */
2506
2507static void
2508coro_signal_wake (pTHX_ AV *av, int count)
2509{
2510 SvIVX (AvARRAY (av)[0]) = 0;
2511
2512 /* now signal count waiters */
2513 while (count > 0 && AvFILLp (av) > 0)
2514 {
2515 SV *cb;
2516
2517 /* swap first two elements so we can shift a waiter */
2518 cb = AvARRAY (av)[0];
2519 AvARRAY (av)[0] = AvARRAY (av)[1];
2520 AvARRAY (av)[1] = cb;
2521
2522 cb = av_shift (av);
2523
2524 api_ready (aTHX_ cb);
2525 sv_setiv (cb, 0); /* signal waiter */
2526 SvREFCNT_dec (cb);
2527
2528 --count;
2529 }
2530}
2531
2532static int
2533slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2534{
2535 /* if we are about to throw, also stop waiting */
2536 return SvROK ((SV *)frame->data) && !CORO_THROW;
2537}
2538
2539static void
2540slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2541{
2542 AV *av = (AV *)SvRV (arg [0]);
2543
2544 if (SvIVX (AvARRAY (av)[0]))
2545 {
2546 SvIVX (AvARRAY (av)[0]) = 0;
2547 frame->prepare = prepare_nop;
2548 frame->check = slf_check_nop;
2549 }
2550 else
2551 {
2552 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2553
2554 av_push (av, waiter);
2555
2556 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2557 frame->prepare = prepare_schedule;
2558 frame->check = slf_check_signal_wait;
2559 }
2560}
2561
2562/*****************************************************************************/
2563/* Coro::AIO */
2564
2565#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2566
2567/* helper storage struct */
2568struct io_state
2569{
2570 int errorno;
2571 I32 laststype; /* U16 in 5.10.0 */
2572 int laststatval;
2573 Stat_t statcache;
2574};
2575
2576static void
2577coro_aio_callback (pTHX_ CV *cv)
2578{
2579 dXSARGS;
2580 AV *state = (AV *)GENSUB_ARG;
2581 SV *coro = av_pop (state);
2582 SV *data_sv = newSV (sizeof (struct io_state));
2583
2584 av_extend (state, items - 1);
2585
2586 sv_upgrade (data_sv, SVt_PV);
2587 SvCUR_set (data_sv, sizeof (struct io_state));
2588 SvPOK_only (data_sv);
2589
2590 {
2591 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2592
2593 data->errorno = errno;
2594 data->laststype = PL_laststype;
2595 data->laststatval = PL_laststatval;
2596 data->statcache = PL_statcache;
2597 }
2598
2599 /* now build the result vector out of all the parameters and the data_sv */
2600 {
2601 int i;
2602
2603 for (i = 0; i < items; ++i)
2604 av_push (state, SvREFCNT_inc_NN (ST (i)));
2605 }
2606
2607 av_push (state, data_sv);
2608
2609 api_ready (aTHX_ coro);
2610 SvREFCNT_dec (coro);
2611 SvREFCNT_dec ((AV *)state);
2612}
2613
2614static int
2615slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2616{
2617 AV *state = (AV *)frame->data;
2618
2619 /* if we are about to throw, return early */
2620 /* this does not cancel the aio request, but at least */
2621 /* it quickly returns */
2622 if (CORO_THROW)
2623 return 0;
2624
2625 /* one element that is an RV? repeat! */
2626 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2627 return 1;
2628
2629 /* restore status */
2630 {
2631 SV *data_sv = av_pop (state);
2632 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2633
2634 errno = data->errorno;
2635 PL_laststype = data->laststype;
2636 PL_laststatval = data->laststatval;
2637 PL_statcache = data->statcache;
2638
2639 SvREFCNT_dec (data_sv);
2640 }
2641
2642 /* push result values */
2643 {
2644 dSP;
2645 int i;
2646
2647 EXTEND (SP, AvFILLp (state) + 1);
2648 for (i = 0; i <= AvFILLp (state); ++i)
2649 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2650
2651 PUTBACK;
2652 }
2653
2654 return 0;
2655}
2656
2657static void
2658slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2659{
2660 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2661 SV *coro_hv = SvRV (coro_current);
2662 struct coro *coro = SvSTATE_hv (coro_hv);
2663
2664 /* put our coroutine id on the state arg */
2665 av_push (state, SvREFCNT_inc_NN (coro_hv));
2666
2667 /* first see whether we have a non-zero priority and set it as AIO prio */
2668 if (coro->prio)
2669 {
2670 dSP;
2671
2672 static SV *prio_cv;
2673 static SV *prio_sv;
2674
2675 if (expect_false (!prio_cv))
2676 {
2677 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2678 prio_sv = newSViv (0);
2679 }
2680
2681 PUSHMARK (SP);
2682 sv_setiv (prio_sv, coro->prio);
2683 XPUSHs (prio_sv);
2684
2685 PUTBACK;
2686 call_sv (prio_cv, G_VOID | G_DISCARD);
2687 }
2688
2689 /* now call the original request */
2690 {
2691 dSP;
2692 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2693 int i;
2694
2695 PUSHMARK (SP);
2696
2697 /* first push all args to the stack */
2698 EXTEND (SP, items + 1);
2699
2700 for (i = 0; i < items; ++i)
2701 PUSHs (arg [i]);
2702
2703 /* now push the callback closure */
2704 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2705
2706 /* now call the AIO function - we assume our request is uncancelable */
2707 PUTBACK;
2708 call_sv ((SV *)req, G_VOID | G_DISCARD);
2709 }
2710
2711 /* now that the requets is going, we loop toll we have a result */
2712 frame->data = (void *)state;
2713 frame->prepare = prepare_schedule;
2714 frame->check = slf_check_aio_req;
2715}
2716
2717static void
2718coro_aio_req_xs (pTHX_ CV *cv)
2719{
2720 dXSARGS;
2721
2722 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2723
2724 XSRETURN_EMPTY;
2725}
2726
2727/*****************************************************************************/
1800 2728
1801MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2729MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1802 2730
1803PROTOTYPES: DISABLE 2731PROTOTYPES: DISABLE
1804 2732
1805BOOT: 2733BOOT:
1806{ 2734{
1807#ifdef USE_ITHREADS 2735#ifdef USE_ITHREADS
1808 MUTEX_INIT (&coro_lock);
1809# if CORO_PTHREAD 2736# if CORO_PTHREAD
1810 coro_thx = PERL_GET_CONTEXT; 2737 coro_thx = PERL_GET_CONTEXT;
1811# endif 2738# endif
1812#endif 2739#endif
1813 BOOT_PAGESIZE; 2740 BOOT_PAGESIZE;
… …
1834 main_top_env = PL_top_env; 2761 main_top_env = PL_top_env;
1835 2762
1836 while (main_top_env->je_prev) 2763 while (main_top_env->je_prev)
1837 main_top_env = main_top_env->je_prev; 2764 main_top_env = main_top_env->je_prev;
1838 2765
2766 {
2767 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2768
2769 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2770 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2771
2772 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2773 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2774 }
2775
1839 coroapi.ver = CORO_API_VERSION; 2776 coroapi.ver = CORO_API_VERSION;
1840 coroapi.rev = CORO_API_REVISION; 2777 coroapi.rev = CORO_API_REVISION;
2778
1841 coroapi.transfer = api_transfer; 2779 coroapi.transfer = api_transfer;
2780
2781 coroapi.sv_state = SvSTATE_;
2782 coroapi.execute_slf = api_execute_slf;
2783 coroapi.prepare_nop = prepare_nop;
2784 coroapi.prepare_schedule = prepare_schedule;
2785 coroapi.prepare_cede = prepare_cede;
2786 coroapi.prepare_cede_notself = prepare_cede_notself;
1842 2787
1843 { 2788 {
1844 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2789 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1845 2790
1846 if (!svp) croak ("Time::HiRes is required"); 2791 if (!svp) croak ("Time::HiRes is required");
… …
1852 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2797 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1853} 2798}
1854 2799
1855SV * 2800SV *
1856new (char *klass, ...) 2801new (char *klass, ...)
2802 ALIAS:
2803 Coro::new = 1
1857 CODE: 2804 CODE:
1858{ 2805{
1859 struct coro *coro; 2806 struct coro *coro;
1860 MAGIC *mg; 2807 MAGIC *mg;
1861 HV *hv; 2808 HV *hv;
2809 CV *cb;
1862 int i; 2810 int i;
2811
2812 if (items > 1)
2813 {
2814 cb = coro_sv_2cv (aTHX_ ST (1));
2815
2816 if (!ix)
2817 {
2818 if (CvISXSUB (cb))
2819 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2820
2821 if (!CvROOT (cb))
2822 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2823 }
2824 }
1863 2825
1864 Newz (0, coro, 1, struct coro); 2826 Newz (0, coro, 1, struct coro);
1865 coro->args = newAV (); 2827 coro->args = newAV ();
1866 coro->flags = CF_NEW; 2828 coro->flags = CF_NEW;
1867 2829
… …
1872 coro->hv = hv = newHV (); 2834 coro->hv = hv = newHV ();
1873 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2835 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1874 mg->mg_flags |= MGf_DUP; 2836 mg->mg_flags |= MGf_DUP;
1875 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2837 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1876 2838
2839 if (items > 1)
2840 {
1877 av_extend (coro->args, items - 1); 2841 av_extend (coro->args, items - 1 + ix - 1);
2842
2843 if (ix)
2844 {
2845 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2846 cb = cv_coro_run;
2847 }
2848
2849 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2850
1878 for (i = 1; i < items; i++) 2851 for (i = 2; i < items; i++)
1879 av_push (coro->args, newSVsv (ST (i))); 2852 av_push (coro->args, newSVsv (ST (i)));
2853 }
1880} 2854}
1881 OUTPUT: 2855 OUTPUT:
1882 RETVAL 2856 RETVAL
1883 2857
1884# these not obviously related functions are all rolled into the same xs
1885# function to increase chances that they all will call transfer with the same
1886# stack offset
1887void 2858void
1888_set_stacklevel (...) 2859transfer (...)
1889 ALIAS: 2860 PROTOTYPE: $$
1890 Coro::State::transfer = 1 2861 CODE:
1891 Coro::schedule = 2 2862 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1892 Coro::cede = 3
1893 Coro::cede_notself = 4
1894 CODE:
1895{
1896 struct transfer_args ta;
1897
1898 PUTBACK;
1899 switch (ix)
1900 {
1901 case 0:
1902 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1903 ta.next = 0;
1904 break;
1905
1906 case 1:
1907 if (items != 2)
1908 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1909
1910 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1911 break;
1912
1913 case 2:
1914 prepare_schedule (aTHX_ &ta);
1915 break;
1916
1917 case 3:
1918 prepare_cede (aTHX_ &ta);
1919 break;
1920
1921 case 4:
1922 if (!prepare_cede_notself (aTHX_ &ta))
1923 XSRETURN_EMPTY;
1924
1925 break;
1926 }
1927 SPAGAIN;
1928
1929 BARRIER;
1930 PUTBACK;
1931 TRANSFER (ta, 0);
1932 SPAGAIN; /* might be the sp of a different coroutine now */
1933 /* be extra careful not to ever do anything after TRANSFER */
1934}
1935 2863
1936bool 2864bool
1937_destroy (SV *coro_sv) 2865_destroy (SV *coro_sv)
1938 CODE: 2866 CODE:
1939 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2867 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1946 CODE: 2874 CODE:
1947 _exit (code); 2875 _exit (code);
1948 2876
1949int 2877int
1950cctx_stacksize (int new_stacksize = 0) 2878cctx_stacksize (int new_stacksize = 0)
2879 PROTOTYPE: ;$
1951 CODE: 2880 CODE:
1952 RETVAL = cctx_stacksize; 2881 RETVAL = cctx_stacksize;
1953 if (new_stacksize) 2882 if (new_stacksize)
1954 { 2883 {
1955 cctx_stacksize = new_stacksize; 2884 cctx_stacksize = new_stacksize;
… …
1958 OUTPUT: 2887 OUTPUT:
1959 RETVAL 2888 RETVAL
1960 2889
1961int 2890int
1962cctx_max_idle (int max_idle = 0) 2891cctx_max_idle (int max_idle = 0)
2892 PROTOTYPE: ;$
1963 CODE: 2893 CODE:
1964 RETVAL = cctx_max_idle; 2894 RETVAL = cctx_max_idle;
1965 if (max_idle > 1) 2895 if (max_idle > 1)
1966 cctx_max_idle = max_idle; 2896 cctx_max_idle = max_idle;
1967 OUTPUT: 2897 OUTPUT:
1968 RETVAL 2898 RETVAL
1969 2899
1970int 2900int
1971cctx_count () 2901cctx_count ()
2902 PROTOTYPE:
1972 CODE: 2903 CODE:
1973 RETVAL = cctx_count; 2904 RETVAL = cctx_count;
1974 OUTPUT: 2905 OUTPUT:
1975 RETVAL 2906 RETVAL
1976 2907
1977int 2908int
1978cctx_idle () 2909cctx_idle ()
2910 PROTOTYPE:
1979 CODE: 2911 CODE:
1980 RETVAL = cctx_idle; 2912 RETVAL = cctx_idle;
1981 OUTPUT: 2913 OUTPUT:
1982 RETVAL 2914 RETVAL
1983 2915
1984void 2916void
1985list () 2917list ()
2918 PROTOTYPE:
1986 PPCODE: 2919 PPCODE:
1987{ 2920{
1988 struct coro *coro; 2921 struct coro *coro;
1989 for (coro = coro_first; coro; coro = coro->next) 2922 for (coro = coro_first; coro; coro = coro->next)
1990 if (coro->hv) 2923 if (coro->hv)
… …
2049 RETVAL = boolSV (coro->flags & ix); 2982 RETVAL = boolSV (coro->flags & ix);
2050 OUTPUT: 2983 OUTPUT:
2051 RETVAL 2984 RETVAL
2052 2985
2053void 2986void
2987throw (Coro::State self, SV *throw = &PL_sv_undef)
2988 PROTOTYPE: $;$
2989 CODE:
2990{
2991 struct coro *current = SvSTATE_current;
2992 SV **throwp = self == current ? &CORO_THROW : &self->except;
2993 SvREFCNT_dec (*throwp);
2994 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2995}
2996
2997void
2054api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2998api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2999 PROTOTYPE: $;$
3000 C_ARGS: aTHX_ coro, flags
2055 3001
2056SV * 3002SV *
2057has_cctx (Coro::State coro) 3003has_cctx (Coro::State coro)
2058 PROTOTYPE: $ 3004 PROTOTYPE: $
2059 CODE: 3005 CODE:
… …
2083 OUTPUT: 3029 OUTPUT:
2084 RETVAL 3030 RETVAL
2085 3031
2086void 3032void
2087force_cctx () 3033force_cctx ()
3034 PROTOTYPE:
2088 CODE: 3035 CODE:
2089 struct coro *coro = SvSTATE (coro_current);
2090 coro->cctx->idle_sp = 0; 3036 SvSTATE_current->cctx->idle_sp = 0;
2091 3037
2092void 3038void
2093swap_defsv (Coro::State self) 3039swap_defsv (Coro::State self)
2094 PROTOTYPE: $ 3040 PROTOTYPE: $
2095 ALIAS: 3041 ALIAS:
2096 swap_defav = 1 3042 swap_defav = 1
2097 CODE: 3043 CODE:
2098 if (!self->slot) 3044 if (!self->slot)
2099 croak ("cannot swap state with coroutine that has no saved state"); 3045 croak ("cannot swap state with coroutine that has no saved state,");
2100 else 3046 else
2101 { 3047 {
2102 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3048 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2103 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3049 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2104 3050
2105 SV *tmp = *src; *src = *dst; *dst = tmp; 3051 SV *tmp = *src; *src = *dst; *dst = tmp;
2106 } 3052 }
2107 3053
3054
2108MODULE = Coro::State PACKAGE = Coro 3055MODULE = Coro::State PACKAGE = Coro
2109 3056
2110BOOT: 3057BOOT:
2111{ 3058{
2112 int i; 3059 int i;
2113 3060
2114 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2115 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3061 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2116 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3062 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2117 3063 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3064 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2118 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3065 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2119 SvREADONLY_on (coro_current); 3066 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3067 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3068 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3069
3070 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3071 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3072 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3073 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2120 3074
2121 coro_stash = gv_stashpv ("Coro", TRUE); 3075 coro_stash = gv_stashpv ("Coro", TRUE);
2122 3076
2123 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3077 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2124 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3078 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2129 3083
2130 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3084 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2131 coro_ready[i] = newAV (); 3085 coro_ready[i] = newAV ();
2132 3086
2133 { 3087 {
2134 SV *sv = perl_get_sv ("Coro::API", TRUE); 3088 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2135 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2136 3089
2137 coroapi.schedule = api_schedule; 3090 coroapi.schedule = api_schedule;
3091 coroapi.schedule_to = api_schedule_to;
2138 coroapi.cede = api_cede; 3092 coroapi.cede = api_cede;
2139 coroapi.cede_notself = api_cede_notself; 3093 coroapi.cede_notself = api_cede_notself;
2140 coroapi.ready = api_ready; 3094 coroapi.ready = api_ready;
2141 coroapi.is_ready = api_is_ready; 3095 coroapi.is_ready = api_is_ready;
2142 coroapi.nready = &coro_nready; 3096 coroapi.nready = coro_nready;
2143 coroapi.current = coro_current; 3097 coroapi.current = coro_current;
2144 3098
2145 GCoroAPI = &coroapi; 3099 /*GCoroAPI = &coroapi;*/
2146 sv_setiv (sv, (IV)&coroapi); 3100 sv_setiv (sv, (IV)&coroapi);
2147 SvREADONLY_on (sv); 3101 SvREADONLY_on (sv);
2148 } 3102 }
2149} 3103}
3104
3105void
3106terminate (...)
3107 CODE:
3108 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3109
3110void
3111schedule (...)
3112 CODE:
3113 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3114
3115void
3116schedule_to (...)
3117 CODE:
3118 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3119
3120void
3121cede_to (...)
3122 CODE:
3123 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3124
3125void
3126cede (...)
3127 CODE:
3128 CORO_EXECUTE_SLF_XS (slf_init_cede);
3129
3130void
3131cede_notself (...)
3132 CODE:
3133 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3134
3135void
3136_cancel (Coro::State self)
3137 CODE:
3138 coro_state_destroy (aTHX_ self);
3139 coro_call_on_destroy (aTHX_ self);
2150 3140
2151void 3141void
2152_set_current (SV *current) 3142_set_current (SV *current)
2153 PROTOTYPE: $ 3143 PROTOTYPE: $
2154 CODE: 3144 CODE:
… …
2157 3147
2158void 3148void
2159_set_readyhook (SV *hook) 3149_set_readyhook (SV *hook)
2160 PROTOTYPE: $ 3150 PROTOTYPE: $
2161 CODE: 3151 CODE:
2162 LOCK;
2163 SvREFCNT_dec (coro_readyhook); 3152 SvREFCNT_dec (coro_readyhook);
2164 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3153 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2165 UNLOCK;
2166 3154
2167int 3155int
2168prio (Coro::State coro, int newprio = 0) 3156prio (Coro::State coro, int newprio = 0)
3157 PROTOTYPE: $;$
2169 ALIAS: 3158 ALIAS:
2170 nice = 1 3159 nice = 1
2171 CODE: 3160 CODE:
2172{ 3161{
2173 RETVAL = coro->prio; 3162 RETVAL = coro->prio;
… …
2188 3177
2189SV * 3178SV *
2190ready (SV *self) 3179ready (SV *self)
2191 PROTOTYPE: $ 3180 PROTOTYPE: $
2192 CODE: 3181 CODE:
2193 RETVAL = boolSV (api_ready (self)); 3182 RETVAL = boolSV (api_ready (aTHX_ self));
2194 OUTPUT: 3183 OUTPUT:
2195 RETVAL 3184 RETVAL
2196 3185
2197int 3186int
2198nready (...) 3187nready (...)
… …
2201 RETVAL = coro_nready; 3190 RETVAL = coro_nready;
2202 OUTPUT: 3191 OUTPUT:
2203 RETVAL 3192 RETVAL
2204 3193
2205void 3194void
2206throw (Coro::State self, SV *throw = &PL_sv_undef) 3195_pool_handler (...)
2207 PROTOTYPE: $;$ 3196 CODE:
2208 CODE: 3197 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2209 SvREFCNT_dec (self->throw);
2210 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2211 3198
2212# for async_pool speedup
2213void 3199void
2214_pool_1 (SV *cb) 3200async_pool (SV *cv, ...)
3201 PROTOTYPE: &@
3202 PPCODE:
3203{
3204 HV *hv = (HV *)av_pop (av_async_pool);
3205 AV *av = newAV ();
3206 SV *cb = ST (0);
3207 int i;
3208
3209 av_extend (av, items - 2);
3210 for (i = 1; i < items; ++i)
3211 av_push (av, SvREFCNT_inc_NN (ST (i)));
3212
3213 if ((SV *)hv == &PL_sv_undef)
3214 {
3215 PUSHMARK (SP);
3216 EXTEND (SP, 2);
3217 PUSHs (sv_Coro);
3218 PUSHs ((SV *)cv_pool_handler);
3219 PUTBACK;
3220 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3221 SPAGAIN;
3222
3223 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3224 }
3225
3226 {
3227 struct coro *coro = SvSTATE_hv (hv);
3228
3229 assert (!coro->invoke_cb);
3230 assert (!coro->invoke_av);
3231 coro->invoke_cb = SvREFCNT_inc (cb);
3232 coro->invoke_av = av;
3233 }
3234
3235 api_ready (aTHX_ (SV *)hv);
3236
3237 if (GIMME_V != G_VOID)
3238 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3239 else
3240 SvREFCNT_dec (hv);
3241}
3242
3243SV *
3244rouse_cb ()
3245 PROTOTYPE:
2215 CODE: 3246 CODE:
2216{ 3247 RETVAL = coro_new_rouse_cb (aTHX);
2217 struct coro *coro = SvSTATE (coro_current);
2218 HV *hv = (HV *)SvRV (coro_current);
2219 AV *defav = GvAV (PL_defgv);
2220 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2221 AV *invoke_av;
2222 int i, len;
2223
2224 if (!invoke)
2225 {
2226 SV *old = PL_diehook;
2227 PL_diehook = 0;
2228 SvREFCNT_dec (old);
2229 croak ("\3async_pool terminate\2\n");
2230 }
2231
2232 SvREFCNT_dec (coro->saved_deffh);
2233 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2234
2235 hv_store (hv, "desc", sizeof ("desc") - 1,
2236 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2237
2238 invoke_av = (AV *)SvRV (invoke);
2239 len = av_len (invoke_av);
2240
2241 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2242
2243 if (len > 0)
2244 {
2245 av_fill (defav, len - 1);
2246 for (i = 0; i < len; ++i)
2247 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2248 }
2249
2250 SvREFCNT_dec (invoke);
2251}
2252
2253void
2254_pool_2 (SV *cb)
2255 CODE:
2256{
2257 struct coro *coro = SvSTATE (coro_current);
2258
2259 sv_setsv (cb, &PL_sv_undef);
2260
2261 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2262 coro->saved_deffh = 0;
2263
2264 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2265 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2266 {
2267 SV *old = PL_diehook;
2268 PL_diehook = 0;
2269 SvREFCNT_dec (old);
2270 croak ("\3async_pool terminate\2\n");
2271 }
2272
2273 av_clear (GvAV (PL_defgv));
2274 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2275 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2276
2277 coro->prio = 0;
2278
2279 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2280 api_trace (coro_current, 0);
2281
2282 av_push (av_async_pool, newSVsv (coro_current));
2283}
2284
2285#if 0
2286
2287void
2288_generator_call (...)
2289 PROTOTYPE: @
2290 PPCODE:
2291 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2292 xxxx
2293 abort ();
2294
2295SV *
2296gensub (SV *sub, ...)
2297 PROTOTYPE: &;@
2298 CODE:
2299{
2300 struct coro *coro;
2301 MAGIC *mg;
2302 CV *xcv;
2303 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2304 int i;
2305
2306 CvGV (ncv) = CvGV (cv);
2307 CvFILE (ncv) = CvFILE (cv);
2308
2309 Newz (0, coro, 1, struct coro);
2310 coro->args = newAV ();
2311 coro->flags = CF_NEW;
2312
2313 av_extend (coro->args, items - 1);
2314 for (i = 1; i < items; i++)
2315 av_push (coro->args, newSVsv (ST (i)));
2316
2317 CvISXSUB_on (ncv);
2318 CvXSUBANY (ncv).any_ptr = (void *)coro;
2319
2320 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2321
2322 CvXSUB (ncv) = CvXSUB (xcv);
2323 CvANON_on (ncv);
2324
2325 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2326 RETVAL = newRV_noinc ((SV *)ncv);
2327}
2328 OUTPUT: 3248 OUTPUT:
2329 RETVAL 3249 RETVAL
2330 3250
2331#endif
2332
2333
2334MODULE = Coro::State PACKAGE = Coro::AIO
2335
2336void 3251void
2337_get_state (SV *self) 3252rouse_wait (...)
3253 PROTOTYPE: ;$
2338 PPCODE: 3254 PPCODE:
2339{ 3255 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2340 AV *defav = GvAV (PL_defgv);
2341 AV *av = newAV ();
2342 int i;
2343 SV *data_sv = newSV (sizeof (struct io_state));
2344 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2345 SvCUR_set (data_sv, sizeof (struct io_state));
2346 SvPOK_only (data_sv);
2347 3256
2348 data->errorno = errno;
2349 data->laststype = PL_laststype;
2350 data->laststatval = PL_laststatval;
2351 data->statcache = PL_statcache;
2352 3257
2353 av_extend (av, AvFILLp (defav) + 1 + 1); 3258MODULE = Coro::State PACKAGE = PerlIO::cede
2354 3259
2355 for (i = 0; i <= AvFILLp (defav); ++i) 3260BOOT:
2356 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3261 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2357 3262
2358 av_push (av, data_sv);
2359 3263
2360 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3264MODULE = Coro::State PACKAGE = Coro::Semaphore
2361 3265
2362 api_ready (self); 3266SV *
2363} 3267new (SV *klass, SV *count = 0)
3268 CODE:
3269 RETVAL = sv_bless (
3270 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3271 GvSTASH (CvGV (cv))
3272 );
3273 OUTPUT:
3274 RETVAL
3275
3276# helper for Coro::Channel
3277SV *
3278_alloc (int count)
3279 CODE:
3280 RETVAL = coro_waitarray_new (aTHX_ count);
3281 OUTPUT:
3282 RETVAL
3283
3284SV *
3285count (SV *self)
3286 CODE:
3287 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3288 OUTPUT:
3289 RETVAL
2364 3290
2365void 3291void
2366_set_state (SV *state) 3292up (SV *self, int adjust = 1)
2367 PROTOTYPE: $ 3293 ALIAS:
3294 adjust = 1
3295 CODE:
3296 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3297
3298void
3299down (...)
3300 CODE:
3301 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3302
3303void
3304wait (...)
3305 CODE:
3306 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3307
3308void
3309try (SV *self)
3310 PPCODE:
3311{
3312 AV *av = (AV *)SvRV (self);
3313 SV *count_sv = AvARRAY (av)[0];
3314 IV count = SvIVX (count_sv);
3315
3316 if (count > 0)
3317 {
3318 --count;
3319 SvIVX (count_sv) = count;
3320 XSRETURN_YES;
3321 }
3322 else
3323 XSRETURN_NO;
3324}
3325
3326void
3327waiters (SV *self)
3328 PPCODE:
3329{
3330 AV *av = (AV *)SvRV (self);
3331 int wcount = AvFILLp (av) + 1 - 1;
3332
3333 if (GIMME_V == G_SCALAR)
3334 XPUSHs (sv_2mortal (newSViv (wcount)));
3335 else
3336 {
3337 int i;
3338 EXTEND (SP, wcount);
3339 for (i = 1; i <= wcount; ++i)
3340 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3341 }
3342}
3343
3344MODULE = Coro::State PACKAGE = Coro::Signal
3345
3346SV *
3347new (SV *klass)
2368 PPCODE: 3348 CODE:
3349 RETVAL = sv_bless (
3350 coro_waitarray_new (aTHX_ 0),
3351 GvSTASH (CvGV (cv))
3352 );
3353 OUTPUT:
3354 RETVAL
3355
3356void
3357wait (...)
3358 CODE:
3359 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3360
3361void
3362broadcast (SV *self)
3363 CODE:
2369{ 3364{
2370 AV *av = (AV *)SvRV (state); 3365 AV *av = (AV *)SvRV (self);
2371 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3366 coro_signal_wake (aTHX_ av, AvFILLp (av));
2372 int i; 3367}
2373 3368
2374 errno = data->errorno; 3369void
2375 PL_laststype = data->laststype; 3370send (SV *self)
2376 PL_laststatval = data->laststatval; 3371 CODE:
2377 PL_statcache = data->statcache; 3372{
3373 AV *av = (AV *)SvRV (self);
2378 3374
2379 EXTEND (SP, AvFILLp (av)); 3375 if (AvFILLp (av))
2380 for (i = 0; i < AvFILLp (av); ++i) 3376 coro_signal_wake (aTHX_ av, 1);
2381 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3377 else
3378 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2382} 3379}
3380
3381IV
3382awaited (SV *self)
3383 CODE:
3384 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3385 OUTPUT:
3386 RETVAL
2383 3387
2384 3388
2385MODULE = Coro::State PACKAGE = Coro::AnyEvent 3389MODULE = Coro::State PACKAGE = Coro::AnyEvent
2386 3390
2387BOOT: 3391BOOT:
2388 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3392 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2389 3393
2390SV * 3394void
2391_schedule (...) 3395_schedule (...)
2392 PROTOTYPE: @
2393 CODE: 3396 CODE:
2394{ 3397{
2395 static int incede; 3398 static int incede;
2396 3399
2397 api_cede_notself (); 3400 api_cede_notself (aTHX);
2398 3401
2399 ++incede; 3402 ++incede;
2400 while (coro_nready >= incede && api_cede ()) 3403 while (coro_nready >= incede && api_cede (aTHX))
2401 ; 3404 ;
2402 3405
2403 sv_setsv (sv_activity, &PL_sv_undef); 3406 sv_setsv (sv_activity, &PL_sv_undef);
2404 if (coro_nready >= incede) 3407 if (coro_nready >= incede)
2405 { 3408 {
2406 PUSHMARK (SP); 3409 PUSHMARK (SP);
2407 PUTBACK; 3410 PUTBACK;
2408 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3411 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2409 SPAGAIN;
2410 } 3412 }
2411 3413
2412 --incede; 3414 --incede;
2413} 3415}
2414 3416
2415 3417
2416MODULE = Coro::State PACKAGE = PerlIO::cede 3418MODULE = Coro::State PACKAGE = Coro::AIO
2417 3419
2418BOOT: 3420void
2419 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3421_register (char *target, char *proto, SV *req)
3422 CODE:
3423{
3424 CV *req_cv = coro_sv_2cv (aTHX_ req);
3425 /* newXSproto doesn't return the CV on 5.8 */
3426 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3427 sv_setpv ((SV *)slf_cv, proto);
3428 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3429}
3430

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