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Comparing Coro/Coro/State.xs (file contents):
Revision 1.254 by root, Fri Nov 7 20:27:47 2008 UTC vs.
Revision 1.316 by root, Thu Nov 20 06:01:40 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
147static perl_mutex coro_lock; 156# if CORO_PTHREAD
148# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0) 157static void *coro_thx;
149# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
150#else
151# define LOCK (void)0
152# define UNLOCK (void)0
153#endif 158# endif
154 159#endif
155/* helper storage struct for Coro::AIO */
156struct io_state
157{
158 AV *res;
159 int errorno;
160 I32 laststype;
161 int laststatval;
162 Stat_t statcache;
163};
164 160
165static 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);
166 166
167static U32 cctx_gen; 167static U32 cctx_gen;
168static size_t cctx_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
169static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
170static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
… …
179static HV *hv_sig; /* %SIG */ 179static HV *hv_sig; /* %SIG */
180 180
181/* async_pool helper stuff */ 181/* async_pool helper stuff */
182static SV *sv_pool_rss; 182static SV *sv_pool_rss;
183static SV *sv_pool_size; 183static SV *sv_pool_size;
184static SV *sv_async_pool_idle;
184static AV *av_async_pool; 185static AV *av_async_pool;
186static SV *sv_Coro;
187static CV *cv_pool_handler;
188static CV *cv_coro_state_new;
185 189
186/* Coro::AnyEvent */ 190/* Coro::AnyEvent */
187static SV *sv_activity; 191static SV *sv_activity;
188 192
189static struct coro_cctx *cctx_first; 193static struct coro_cctx *cctx_first;
… …
197 CC_TRACE_LINE = 0x10, /* trace each statement */ 201 CC_TRACE_LINE = 0x10, /* trace each statement */
198 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 202 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
199}; 203};
200 204
201/* this is a structure representing a c-level coroutine */ 205/* this is a structure representing a c-level coroutine */
202typedef struct coro_cctx { 206typedef struct coro_cctx
207{
203 struct coro_cctx *next; 208 struct coro_cctx *next;
204 209
205 /* the stack */ 210 /* the stack */
206 void *sptr; 211 void *sptr;
207 size_t ssize; 212 size_t ssize;
… …
225 CF_NEW = 0x0004, /* has never been switched to */ 230 CF_NEW = 0x0004, /* has never been switched to */
226 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 231 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
227}; 232};
228 233
229/* the structure where most of the perl state is stored, overlaid on the cxstack */ 234/* the structure where most of the perl state is stored, overlaid on the cxstack */
230typedef struct { 235typedef struct
236{
231 SV *defsv; 237 SV *defsv;
232 AV *defav; 238 AV *defav;
233 SV *errsv; 239 SV *errsv;
234 SV *irsgv; 240 SV *irsgv;
235#define VAR(name,type) type name; 241#define VAR(name,type) type name;
… …
239 245
240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 246#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
241 247
242/* this is a structure representing a perl-level coroutine */ 248/* this is a structure representing a perl-level coroutine */
243struct coro { 249struct coro {
244 /* the c coroutine allocated to this perl coroutine, if any */ 250 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 251 coro_cctx *cctx;
246 252
247 /* process data */ 253 /* state data */
254 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 255 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 256 perl_slots *slot; /* basically the saved sp */
250 257
258 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 259 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 260 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 261 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 262 HV *hv; /* the perl hash associated with this coro, if any */
263 void (*on_destroy)(pTHX_ struct coro *coro);
255 264
256 /* statistics */ 265 /* statistics */
257 int usecount; /* number of transfers to this coro */ 266 int usecount; /* number of transfers to this coro */
258 267
259 /* coro process data */ 268 /* coro process data */
260 int prio; 269 int prio;
261 SV *throw; /* exception to be thrown */ 270 SV *except; /* exception to be thrown */
271 SV *rouse_cb;
262 272
263 /* async_pool */ 273 /* async_pool */
264 SV *saved_deffh; 274 SV *saved_deffh;
275 SV *invoke_cb;
276 AV *invoke_av;
265 277
266 /* linked list */ 278 /* linked list */
267 struct coro *next, *prev; 279 struct coro *next, *prev;
268}; 280};
269 281
270typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
271typedef struct coro *Coro__State_or_hashref; 283typedef struct coro *Coro__State_or_hashref;
284
285/* the following variables are effectively part of the perl context */
286/* and get copied between struct coro and these variables */
287/* the mainr easonw e don't support windows process emulation */
288static struct CoroSLF slf_frame; /* the current slf frame */
272 289
273/** Coro ********************************************************************/ 290/** Coro ********************************************************************/
274 291
275#define PRIO_MAX 3 292#define PRIO_MAX 3
276#define PRIO_HIGH 1 293#define PRIO_HIGH 1
… …
280#define PRIO_MIN -4 297#define PRIO_MIN -4
281 298
282/* for Coro.pm */ 299/* for Coro.pm */
283static SV *coro_current; 300static SV *coro_current;
284static SV *coro_readyhook; 301static SV *coro_readyhook;
285static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 302static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
286static int coro_nready; 303static CV *cv_coro_run, *cv_coro_terminate;
287static struct coro *coro_first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready
288 306
289/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
290 308
291static SV * 309static SV *
292coro_get_sv (pTHX_ const char *name, int create) 310coro_get_sv (pTHX_ const char *name, int create)
… …
314#if PERL_VERSION_ATLEAST (5,10,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
315 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
316 get_hv (name, create); 334 get_hv (name, create);
317#endif 335#endif
318 return get_hv (name, create); 336 return get_hv (name, create);
337}
338
339/* may croak */
340INLINE CV *
341coro_sv_2cv (pTHX_ SV *sv)
342{
343 HV *st;
344 GV *gvp;
345 return sv_2cv (sv, &st, &gvp, 0);
319} 346}
320 347
321static AV * 348static AV *
322coro_clone_padlist (pTHX_ CV *cv) 349coro_clone_padlist (pTHX_ CV *cv)
323{ 350{
… …
377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 404 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
378 405
379 return 0; 406 return 0;
380} 407}
381 408
382#define CORO_MAGIC_type_cv PERL_MAGIC_ext 409#define CORO_MAGIC_type_cv 26
383#define CORO_MAGIC_type_state PERL_MAGIC_ext 410#define CORO_MAGIC_type_state PERL_MAGIC_ext
384 411
385static MGVTBL coro_cv_vtbl = { 412static MGVTBL coro_cv_vtbl = {
386 0, 0, 0, 0, 413 0, 0, 0, 0,
387 coro_cv_free 414 coro_cv_free
388}; 415};
389 416
417#define CORO_MAGIC_NN(sv, type) \
418 (expect_true (SvMAGIC (sv)->mg_type == type) \
419 ? SvMAGIC (sv) \
420 : mg_find (sv, type))
421
390#define CORO_MAGIC(sv, type) \ 422#define CORO_MAGIC(sv, type) \
391 SvMAGIC (sv) \ 423 (expect_true (SvMAGIC (sv)) \
392 ? SvMAGIC (sv)->mg_type == type \ 424 ? CORO_MAGIC_NN (sv, type) \
393 ? SvMAGIC (sv) \
394 : mg_find (sv, type) \
395 : 0 425 : 0)
396 426
397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 427#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
398#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 428#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
399 429
400static struct coro * 430INLINE struct coro *
401SvSTATE_ (pTHX_ SV *coro) 431SvSTATE_ (pTHX_ SV *coro)
402{ 432{
403 HV *stash; 433 HV *stash;
404 MAGIC *mg; 434 MAGIC *mg;
405 435
… …
420 mg = CORO_MAGIC_state (coro); 450 mg = CORO_MAGIC_state (coro);
421 return (struct coro *)mg->mg_ptr; 451 return (struct coro *)mg->mg_ptr;
422} 452}
423 453
424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 454#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
455
456/* faster than SvSTATE, but expects a coroutine hv */
457#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
458#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
425 459
426/* the next two functions merely cache the padlists */ 460/* the next two functions merely cache the padlists */
427static void 461static void
428get_padlist (pTHX_ CV *cv) 462get_padlist (pTHX_ CV *cv)
429{ 463{
… …
435 else 469 else
436 { 470 {
437#if CORO_PREFER_PERL_FUNCTIONS 471#if CORO_PREFER_PERL_FUNCTIONS
438 /* this is probably cleaner? but also slower! */ 472 /* this is probably cleaner? but also slower! */
439 /* in practise, it seems to be less stable */ 473 /* in practise, it seems to be less stable */
440 CV *cp = Perl_cv_clone (cv); 474 CV *cp = Perl_cv_clone (aTHX_ cv);
441 CvPADLIST (cv) = CvPADLIST (cp); 475 CvPADLIST (cv) = CvPADLIST (cp);
442 CvPADLIST (cp) = 0; 476 CvPADLIST (cp) = 0;
443 SvREFCNT_dec (cp); 477 SvREFCNT_dec (cp);
444#else 478#else
445 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 479 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
496 CvPADLIST (cv) = (AV *)POPs; 530 CvPADLIST (cv) = (AV *)POPs;
497 } 531 }
498 532
499 PUTBACK; 533 PUTBACK;
500 } 534 }
535
536 slf_frame = c->slf_frame;
537 CORO_THROW = c->except;
501} 538}
502 539
503static void 540static void
504save_perl (pTHX_ Coro__State c) 541save_perl (pTHX_ Coro__State c)
505{ 542{
543 c->except = CORO_THROW;
544 c->slf_frame = slf_frame;
545
506 { 546 {
507 dSP; 547 dSP;
508 I32 cxix = cxstack_ix; 548 I32 cxix = cxstack_ix;
509 PERL_CONTEXT *ccstk = cxstack; 549 PERL_CONTEXT *ccstk = cxstack;
510 PERL_SI *top_si = PL_curstackinfo; 550 PERL_SI *top_si = PL_curstackinfo;
… …
577 #undef VAR 617 #undef VAR
578 } 618 }
579} 619}
580 620
581/* 621/*
582 * allocate various perl stacks. This is an exact copy 622 * allocate various perl stacks. This is almost an exact copy
583 * of perl.c:init_stacks, except that it uses less memory 623 * of perl.c:init_stacks, except that it uses less memory
584 * on the (sometimes correct) assumption that coroutines do 624 * on the (sometimes correct) assumption that coroutines do
585 * not usually need a lot of stackspace. 625 * not usually need a lot of stackspace.
586 */ 626 */
587#if CORO_PREFER_PERL_FUNCTIONS 627#if CORO_PREFER_PERL_FUNCTIONS
588# define coro_init_stacks init_stacks 628# define coro_init_stacks(thx) init_stacks ()
589#else 629#else
590static void 630static void
591coro_init_stacks (pTHX) 631coro_init_stacks (pTHX)
592{ 632{
593 PL_curstackinfo = new_stackinfo(32, 8); 633 PL_curstackinfo = new_stackinfo(32, 8);
… …
656#if !PERL_VERSION_ATLEAST (5,10,0) 696#if !PERL_VERSION_ATLEAST (5,10,0)
657 Safefree (PL_retstack); 697 Safefree (PL_retstack);
658#endif 698#endif
659} 699}
660 700
701#define CORO_RSS \
702 rss += sizeof (SYM (curstackinfo)); \
703 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
705 rss += SYM (tmps_max) * sizeof (SV *); \
706 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
707 rss += SYM (scopestack_max) * sizeof (I32); \
708 rss += SYM (savestack_max) * sizeof (ANY);
709
661static size_t 710static size_t
662coro_rss (pTHX_ struct coro *coro) 711coro_rss (pTHX_ struct coro *coro)
663{ 712{
664 size_t rss = sizeof (*coro); 713 size_t rss = sizeof (*coro);
665 714
666 if (coro->mainstack) 715 if (coro->mainstack)
667 { 716 {
668 perl_slots tmp_slot;
669 perl_slots *slot;
670
671 if (coro->flags & CF_RUNNING) 717 if (coro->flags & CF_RUNNING)
672 { 718 {
673 slot = &tmp_slot; 719 #define SYM(sym) PL_ ## sym
674 720 CORO_RSS;
675 #define VAR(name,type) slot->name = PL_ ## name;
676 # include "state.h"
677 #undef VAR 721 #undef SYM
678 } 722 }
679 else 723 else
680 slot = coro->slot;
681
682 if (slot)
683 { 724 {
684 rss += sizeof (slot->curstackinfo); 725 #define SYM(sym) coro->slot->sym
685 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 726 CORO_RSS;
686 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 727 #undef SYM
687 rss += slot->tmps_max * sizeof (SV *);
688 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
689 rss += slot->scopestack_max * sizeof (I32);
690 rss += slot->savestack_max * sizeof (ANY);
691
692#if !PERL_VERSION_ATLEAST (5,10,0)
693 rss += slot->retstack_max * sizeof (OP *);
694#endif
695 } 728 }
696 } 729 }
697 730
698 return rss; 731 return rss;
699} 732}
… …
789 822
790 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 823 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
791} 824}
792 825
793static void 826static void
827prepare_nop (pTHX_ struct coro_transfer_args *ta)
828{
829 /* kind of mega-hacky, but works */
830 ta->next = ta->prev = (struct coro *)ta;
831}
832
833static int
834slf_check_nop (pTHX_ struct CoroSLF *frame)
835{
836 return 0;
837}
838
839static UNOP coro_setup_op;
840
841static void NOINLINE /* noinline to keep it out of the transfer fast path */
794coro_setup (pTHX_ struct coro *coro) 842coro_setup (pTHX_ struct coro *coro)
795{ 843{
796 /* 844 /*
797 * emulate part of the perl startup here. 845 * emulate part of the perl startup here.
798 */ 846 */
… …
822 PL_rs = newSVsv (GvSV (irsgv)); 870 PL_rs = newSVsv (GvSV (irsgv));
823 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 871 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
824 872
825 { 873 {
826 dSP; 874 dSP;
827 LOGOP myop; 875 UNOP myop;
828 876
829 Zero (&myop, 1, LOGOP); 877 Zero (&myop, 1, UNOP);
830 myop.op_next = Nullop; 878 myop.op_next = Nullop;
879 myop.op_type = OP_ENTERSUB;
831 myop.op_flags = OPf_WANT_VOID; 880 myop.op_flags = OPf_WANT_VOID;
832 881
833 PUSHMARK (SP); 882 PUSHMARK (SP);
834 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 883 PUSHs ((SV *)coro->startcv);
835 PUTBACK; 884 PUTBACK;
836 PL_op = (OP *)&myop; 885 PL_op = (OP *)&myop;
837 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 886 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
838 SPAGAIN;
839 } 887 }
840 888
841 /* this newly created coroutine might be run on an existing cctx which most 889 /* this newly created coroutine might be run on an existing cctx which most
842 * likely was suspended in set_stacklevel, called from entersub. 890 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
843 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
844 * so we ENTER here for symmetry
845 */ 891 */
846 ENTER; 892 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
893 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
894
895 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
896 coro_setup_op.op_next = PL_op;
897 coro_setup_op.op_type = OP_CUSTOM;
898 coro_setup_op.op_ppaddr = pp_slf;
899 /* no flags etc. required, as an init function won't be called */
900
901 PL_op = (OP *)&coro_setup_op;
902
903 /* copy throw, in case it was set before coro_setup */
904 CORO_THROW = coro->except;
847} 905}
848 906
849static void 907static void
850coro_destruct (pTHX_ struct coro *coro) 908coro_destruct (pTHX_ struct coro *coro)
851{ 909{
… …
875 933
876 SvREFCNT_dec (PL_diehook); 934 SvREFCNT_dec (PL_diehook);
877 SvREFCNT_dec (PL_warnhook); 935 SvREFCNT_dec (PL_warnhook);
878 936
879 SvREFCNT_dec (coro->saved_deffh); 937 SvREFCNT_dec (coro->saved_deffh);
880 SvREFCNT_dec (coro->throw); 938 SvREFCNT_dec (coro->rouse_cb);
939 SvREFCNT_dec (coro->invoke_cb);
940 SvREFCNT_dec (coro->invoke_av);
881 941
882 coro_destruct_stacks (aTHX); 942 coro_destruct_stacks (aTHX);
883} 943}
884 944
885static void 945INLINE void
886free_coro_mortal (pTHX) 946free_coro_mortal (pTHX)
887{ 947{
888 if (expect_true (coro_mortal)) 948 if (expect_true (coro_mortal))
889 { 949 {
890 SvREFCNT_dec (coro_mortal); 950 SvREFCNT_dec (coro_mortal);
… …
895static int 955static int
896runops_trace (pTHX) 956runops_trace (pTHX)
897{ 957{
898 COP *oldcop = 0; 958 COP *oldcop = 0;
899 int oldcxix = -2; 959 int oldcxix = -2;
900 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 960 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
901 coro_cctx *cctx = coro->cctx; 961 coro_cctx *cctx = coro->cctx;
902 962
903 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 963 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
904 { 964 {
905 PERL_ASYNC_CHECK (); 965 PERL_ASYNC_CHECK ();
… …
972 SAVETMPS; 1032 SAVETMPS;
973 EXTEND (SP, 3); 1033 EXTEND (SP, 3);
974 PUSHMARK (SP); 1034 PUSHMARK (SP);
975 PUSHs (&PL_sv_yes); 1035 PUSHs (&PL_sv_yes);
976 PUSHs (fullname); 1036 PUSHs (fullname);
977 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1037 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
978 PUTBACK; 1038 PUTBACK;
979 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1039 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
980 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1040 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
981 SPAGAIN; 1041 SPAGAIN;
982 FREETMPS; 1042 FREETMPS;
… …
1014 1074
1015 TAINT_NOT; 1075 TAINT_NOT;
1016 return 0; 1076 return 0;
1017} 1077}
1018 1078
1019/* inject a fake call to Coro::State::_cctx_init into the execution */ 1079static struct coro_cctx *cctx_ssl_cctx;
1020/* _cctx_init should be careful, as it could be called at almost any time */ 1080static struct CoroSLF cctx_ssl_frame;
1021/* during execution of a perl program */ 1081
1082static void
1083slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1084{
1085 ta->prev = (struct coro *)cctx_ssl_cctx;
1086 ta->next = 0;
1087}
1088
1089static int
1090slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1091{
1092 *frame = cctx_ssl_frame;
1093
1094 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1095}
1096
1097/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1022static void NOINLINE 1098static void NOINLINE
1023cctx_prepare (pTHX_ coro_cctx *cctx) 1099cctx_prepare (pTHX_ coro_cctx *cctx)
1024{ 1100{
1025 dSP;
1026 LOGOP myop;
1027
1028 PL_top_env = &PL_start_env; 1101 PL_top_env = &PL_start_env;
1029 1102
1030 if (cctx->flags & CC_TRACE) 1103 if (cctx->flags & CC_TRACE)
1031 PL_runops = runops_trace; 1104 PL_runops = runops_trace;
1032 1105
1033 Zero (&myop, 1, LOGOP); 1106 /* we already must be executing an SLF op, there is no other valid way
1034 myop.op_next = PL_op; 1107 * that can lead to creation of a new cctx */
1035 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1108 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1109 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1036 1110
1037 PUSHMARK (SP); 1111 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1038 EXTEND (SP, 2); 1112 cctx_ssl_cctx = cctx;
1039 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1113 cctx_ssl_frame = slf_frame;
1040 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1114
1041 PUTBACK; 1115 slf_frame.prepare = slf_prepare_set_stacklevel;
1042 PL_op = (OP *)&myop; 1116 slf_frame.check = slf_check_set_stacklevel;
1043 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1117}
1044 SPAGAIN; 1118
1119/* the tail of transfer: execute stuff we can only do after a transfer */
1120INLINE void
1121transfer_tail (pTHX)
1122{
1123 free_coro_mortal (aTHX);
1045} 1124}
1046 1125
1047/* 1126/*
1048 * this is a _very_ stripped down perl interpreter ;) 1127 * this is a _very_ stripped down perl interpreter ;)
1049 */ 1128 */
1050static void 1129static void
1051cctx_run (void *arg) 1130cctx_run (void *arg)
1052{ 1131{
1132#ifdef USE_ITHREADS
1133# if CORO_PTHREAD
1134 PERL_SET_CONTEXT (coro_thx);
1135# endif
1136#endif
1137 {
1053 dTHX; 1138 dTHX;
1054 1139
1055 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1140 /* normally we would need to skip the entersub here */
1056 UNLOCK; 1141 /* not doing so will re-execute it, which is exactly what we want */
1057
1058 /* we now skip the entersub that lead to transfer() */
1059 PL_op = PL_op->op_next; 1142 /* PL_nop = PL_nop->op_next */
1060 1143
1061 /* inject a fake subroutine call to cctx_init */ 1144 /* inject a fake subroutine call to cctx_init */
1062 cctx_prepare (aTHX_ (coro_cctx *)arg); 1145 cctx_prepare (aTHX_ (coro_cctx *)arg);
1063 1146
1147 /* cctx_run is the alternative tail of transfer() */
1148 transfer_tail (aTHX);
1149
1064 /* somebody or something will hit me for both perl_run and PL_restartop */ 1150 /* somebody or something will hit me for both perl_run and PL_restartop */
1065 PL_restartop = PL_op; 1151 PL_restartop = PL_op;
1066 perl_run (PL_curinterp); 1152 perl_run (PL_curinterp);
1067
1068 /* 1153 /*
1154 * Unfortunately, there is no way to get at the return values of the
1155 * coro body here, as perl_run destroys these
1156 */
1157
1158 /*
1069 * If perl-run returns we assume exit() was being called or the coro 1159 * If perl-run returns we assume exit() was being called or the coro
1070 * fell off the end, which seems to be the only valid (non-bug) 1160 * fell off the end, which seems to be the only valid (non-bug)
1071 * reason for perl_run to return. We try to exit by jumping to the 1161 * reason for perl_run to return. We try to exit by jumping to the
1072 * bootstrap-time "top" top_env, as we cannot restore the "main" 1162 * bootstrap-time "top" top_env, as we cannot restore the "main"
1073 * coroutine as Coro has no such concept 1163 * coroutine as Coro has no such concept
1074 */ 1164 */
1075 PL_top_env = main_top_env; 1165 PL_top_env = main_top_env;
1076 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1166 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1167 }
1077} 1168}
1078 1169
1079static coro_cctx * 1170static coro_cctx *
1080cctx_new () 1171cctx_new ()
1081{ 1172{
1082 coro_cctx *cctx; 1173 coro_cctx *cctx;
1174
1175 ++cctx_count;
1176 New (0, cctx, 1, coro_cctx);
1177
1178 cctx->gen = cctx_gen;
1179 cctx->flags = 0;
1180 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1181
1182 return cctx;
1183}
1184
1185/* create a new cctx only suitable as source */
1186static coro_cctx *
1187cctx_new_empty ()
1188{
1189 coro_cctx *cctx = cctx_new ();
1190
1191 cctx->sptr = 0;
1192 coro_create (&cctx->cctx, 0, 0, 0, 0);
1193
1194 return cctx;
1195}
1196
1197/* create a new cctx suitable as destination/running a perl interpreter */
1198static coro_cctx *
1199cctx_new_run ()
1200{
1201 coro_cctx *cctx = cctx_new ();
1083 void *stack_start; 1202 void *stack_start;
1084 size_t stack_size; 1203 size_t stack_size;
1085
1086 ++cctx_count;
1087 Newz (0, cctx, 1, coro_cctx);
1088
1089 cctx->gen = cctx_gen;
1090 1204
1091#if HAVE_MMAP 1205#if HAVE_MMAP
1092 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1206 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1093 /* mmap supposedly does allocate-on-write for us */ 1207 /* mmap supposedly does allocate-on-write for us */
1094 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1208 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1095 1209
1096 if (cctx->sptr != (void *)-1) 1210 if (cctx->sptr != (void *)-1)
1097 { 1211 {
1098# if CORO_STACKGUARD 1212 #if CORO_STACKGUARD
1099 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1213 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1100# endif 1214 #endif
1101 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1215 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1102 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1216 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1103 cctx->flags |= CC_MAPPED; 1217 cctx->flags |= CC_MAPPED;
1104 } 1218 }
1105 else 1219 else
1106#endif 1220#endif
1107 { 1221 {
1108 cctx->ssize = cctx_stacksize * (long)sizeof (long); 1222 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1109 New (0, cctx->sptr, cctx_stacksize, long); 1223 New (0, cctx->sptr, cctx_stacksize, long);
1110 1224
1111 if (!cctx->sptr) 1225 if (!cctx->sptr)
1112 { 1226 {
1113 perror ("FATAL: unable to allocate stack for coroutine"); 1227 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1114 _exit (EXIT_FAILURE); 1228 _exit (EXIT_FAILURE);
1115 } 1229 }
1116 1230
1117 stack_start = cctx->sptr; 1231 stack_start = cctx->sptr;
1118 stack_size = cctx->ssize; 1232 stack_size = cctx->ssize;
1119 } 1233 }
1120 1234
1121 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1235 #if CORO_USE_VALGRIND
1236 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1237 #endif
1238
1122 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1239 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1123 1240
1124 return cctx; 1241 return cctx;
1125} 1242}
1126 1243
… …
1134 coro_destroy (&cctx->cctx); 1251 coro_destroy (&cctx->cctx);
1135 1252
1136 /* coro_transfer creates new, empty cctx's */ 1253 /* coro_transfer creates new, empty cctx's */
1137 if (cctx->sptr) 1254 if (cctx->sptr)
1138 { 1255 {
1139#if CORO_USE_VALGRIND 1256 #if CORO_USE_VALGRIND
1140 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1257 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1141#endif 1258 #endif
1142 1259
1143#if HAVE_MMAP 1260#if HAVE_MMAP
1144 if (cctx->flags & CC_MAPPED) 1261 if (cctx->flags & CC_MAPPED)
1145 munmap (cctx->sptr, cctx->ssize); 1262 munmap (cctx->sptr, cctx->ssize);
1146 else 1263 else
… …
1167 return cctx; 1284 return cctx;
1168 1285
1169 cctx_destroy (cctx); 1286 cctx_destroy (cctx);
1170 } 1287 }
1171 1288
1172 return cctx_new (); 1289 return cctx_new_run ();
1173} 1290}
1174 1291
1175static void 1292static void
1176cctx_put (coro_cctx *cctx) 1293cctx_put (coro_cctx *cctx)
1177{ 1294{
1178 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1295 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1179 1296
1180 /* free another cctx if overlimit */ 1297 /* free another cctx if overlimit */
1181 if (expect_false (cctx_idle >= cctx_max_idle)) 1298 if (expect_false (cctx_idle >= cctx_max_idle))
1182 { 1299 {
1183 coro_cctx *first = cctx_first; 1300 coro_cctx *first = cctx_first;
… …
1195/** coroutine switching *****************************************************/ 1312/** coroutine switching *****************************************************/
1196 1313
1197static void 1314static void
1198transfer_check (pTHX_ struct coro *prev, struct coro *next) 1315transfer_check (pTHX_ struct coro *prev, struct coro *next)
1199{ 1316{
1317 /* TODO: throwing up here is considered harmful */
1318
1200 if (expect_true (prev != next)) 1319 if (expect_true (prev != next))
1201 { 1320 {
1202 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1321 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1203 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1322 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1204 1323
1205 if (expect_false (next->flags & CF_RUNNING)) 1324 if (expect_false (next->flags & CF_RUNNING))
1206 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1325 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1207 1326
1208 if (expect_false (next->flags & CF_DESTROYED)) 1327 if (expect_false (next->flags & CF_DESTROYED))
1209 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1328 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1210 1329
1211#if !PERL_VERSION_ATLEAST (5,10,0) 1330#if !PERL_VERSION_ATLEAST (5,10,0)
1212 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1331 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1213 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1332 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1214#endif 1333#endif
1215 } 1334 }
1216} 1335}
1217 1336
1218/* always use the TRANSFER macro */ 1337/* always use the TRANSFER macro */
1219static void NOINLINE 1338static void NOINLINE /* noinline so we have a fixed stackframe */
1220transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1339transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1221{ 1340{
1222 dSTACKLEVEL; 1341 dSTACKLEVEL;
1223 1342
1224 /* sometimes transfer is only called to set idle_sp */ 1343 /* sometimes transfer is only called to set idle_sp */
… …
1227 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1346 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1228 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1347 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1229 } 1348 }
1230 else if (expect_true (prev != next)) 1349 else if (expect_true (prev != next))
1231 { 1350 {
1232 static volatile int has_throw;
1233 coro_cctx *prev__cctx; 1351 coro_cctx *prev__cctx;
1234 1352
1235 if (expect_false (prev->flags & CF_NEW)) 1353 if (expect_false (prev->flags & CF_NEW))
1236 { 1354 {
1237 /* create a new empty/source context */ 1355 /* create a new empty/source context */
1238 ++cctx_count; 1356 prev->cctx = cctx_new_empty ();
1239 New (0, prev->cctx, 1, coro_cctx);
1240 prev->cctx->sptr = 0;
1241 coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
1242
1243 prev->flags &= ~CF_NEW; 1357 prev->flags &= ~CF_NEW;
1244 prev->flags |= CF_RUNNING; 1358 prev->flags |= CF_RUNNING;
1245 } 1359 }
1246 1360
1247 prev->flags &= ~CF_RUNNING; 1361 prev->flags &= ~CF_RUNNING;
1248 next->flags |= CF_RUNNING; 1362 next->flags |= CF_RUNNING;
1249
1250 LOCK;
1251 1363
1252 /* first get rid of the old state */ 1364 /* first get rid of the old state */
1253 save_perl (aTHX_ prev); 1365 save_perl (aTHX_ prev);
1254 1366
1255 if (expect_false (next->flags & CF_NEW)) 1367 if (expect_false (next->flags & CF_NEW))
… …
1262 else 1374 else
1263 load_perl (aTHX_ next); 1375 load_perl (aTHX_ next);
1264 1376
1265 prev__cctx = prev->cctx; 1377 prev__cctx = prev->cctx;
1266 1378
1267 /* possibly "free" the cctx */ 1379 /* possibly untie and reuse the cctx */
1268 if (expect_true ( 1380 if (expect_true (
1269 prev__cctx->idle_sp == STACKLEVEL 1381 prev__cctx->idle_sp == STACKLEVEL
1270 && !(prev__cctx->flags & CC_TRACE) 1382 && !(prev__cctx->flags & CC_TRACE)
1271 && !force_cctx 1383 && !force_cctx
1272 )) 1384 ))
1273 { 1385 {
1274 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1386 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1275 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1387 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1276 1388
1277 prev->cctx = 0; 1389 prev->cctx = 0;
1278 1390
1279 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1391 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1280 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1392 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1287 1399
1288 ++next->usecount; 1400 ++next->usecount;
1289 1401
1290 if (expect_true (!next->cctx)) 1402 if (expect_true (!next->cctx))
1291 next->cctx = cctx_get (aTHX); 1403 next->cctx = cctx_get (aTHX);
1292
1293 has_throw = !!next->throw;
1294 1404
1295 if (expect_false (prev__cctx != next->cctx)) 1405 if (expect_false (prev__cctx != next->cctx))
1296 { 1406 {
1297 prev__cctx->top_env = PL_top_env; 1407 prev__cctx->top_env = PL_top_env;
1298 PL_top_env = next->cctx->top_env; 1408 PL_top_env = next->cctx->top_env;
1299 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1409 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1300 } 1410 }
1301 1411
1302 free_coro_mortal (aTHX); 1412 transfer_tail (aTHX);
1303 UNLOCK;
1304
1305 if (expect_false (has_throw))
1306 {
1307 struct coro *coro = SvSTATE (coro_current);
1308
1309 if (coro->throw)
1310 {
1311 SV *exception = coro->throw;
1312 coro->throw = 0;
1313 sv_setsv (ERRSV, exception);
1314 croak (0);
1315 }
1316 }
1317 } 1413 }
1318} 1414}
1319
1320struct transfer_args
1321{
1322 struct coro *prev, *next;
1323};
1324 1415
1325#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1416#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1326#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1417#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1327 1418
1328/** high level stuff ********************************************************/ 1419/** high level stuff ********************************************************/
… …
1330static int 1421static int
1331coro_state_destroy (pTHX_ struct coro *coro) 1422coro_state_destroy (pTHX_ struct coro *coro)
1332{ 1423{
1333 if (coro->flags & CF_DESTROYED) 1424 if (coro->flags & CF_DESTROYED)
1334 return 0; 1425 return 0;
1426
1427 if (coro->on_destroy)
1428 coro->on_destroy (aTHX_ coro);
1335 1429
1336 coro->flags |= CF_DESTROYED; 1430 coro->flags |= CF_DESTROYED;
1337 1431
1338 if (coro->flags & CF_READY) 1432 if (coro->flags & CF_READY)
1339 { 1433 {
1340 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1434 /* reduce nready, as destroying a ready coro effectively unreadies it */
1341 /* alternative: look through all ready queues and remove the coro */ 1435 /* alternative: look through all ready queues and remove the coro */
1342 LOCK;
1343 --coro_nready; 1436 --coro_nready;
1344 UNLOCK;
1345 } 1437 }
1346 else 1438 else
1347 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1439 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1348 1440
1349 if (coro->mainstack && coro->mainstack != main_mainstack) 1441 if (coro->mainstack && coro->mainstack != main_mainstack)
1350 { 1442 {
1351 struct coro temp; 1443 struct coro temp;
1352 1444
1353 if (coro->flags & CF_RUNNING) 1445 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1354 croak ("FATAL: tried to destroy currently running coroutine");
1355 1446
1356 save_perl (aTHX_ &temp); 1447 save_perl (aTHX_ &temp);
1357 load_perl (aTHX_ coro); 1448 load_perl (aTHX_ coro);
1358 1449
1359 coro_destruct (aTHX_ coro); 1450 coro_destruct (aTHX_ coro);
… …
1362 1453
1363 coro->slot = 0; 1454 coro->slot = 0;
1364 } 1455 }
1365 1456
1366 cctx_destroy (coro->cctx); 1457 cctx_destroy (coro->cctx);
1458 SvREFCNT_dec (coro->startcv);
1367 SvREFCNT_dec (coro->args); 1459 SvREFCNT_dec (coro->args);
1460 SvREFCNT_dec (CORO_THROW);
1368 1461
1369 if (coro->next) coro->next->prev = coro->prev; 1462 if (coro->next) coro->next->prev = coro->prev;
1370 if (coro->prev) coro->prev->next = coro->next; 1463 if (coro->prev) coro->prev->next = coro->next;
1371 if (coro == coro_first) coro_first = coro->next; 1464 if (coro == coro_first) coro_first = coro->next;
1372 1465
… …
1410# define MGf_DUP 0 1503# define MGf_DUP 0
1411#endif 1504#endif
1412}; 1505};
1413 1506
1414static void 1507static void
1415prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1508prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1416{ 1509{
1417 ta->prev = SvSTATE (prev_sv); 1510 ta->prev = SvSTATE (prev_sv);
1418 ta->next = SvSTATE (next_sv); 1511 ta->next = SvSTATE (next_sv);
1419 TRANSFER_CHECK (*ta); 1512 TRANSFER_CHECK (*ta);
1420} 1513}
1421 1514
1422static void 1515static void
1423api_transfer (SV *prev_sv, SV *next_sv) 1516api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1424{ 1517{
1425 dTHX;
1426 struct transfer_args ta; 1518 struct coro_transfer_args ta;
1427 1519
1428 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1520 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1429 TRANSFER (ta, 1); 1521 TRANSFER (ta, 1);
1430} 1522}
1431 1523
1524/*****************************************************************************/
1525/* gensub: simple closure generation utility */
1526
1527#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1528
1529/* create a closure from XS, returns a code reference */
1530/* the arg can be accessed via GENSUB_ARG from the callback */
1531/* the callback must use dXSARGS/XSRETURN */
1532static SV *
1533gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1534{
1535 CV *cv = (CV *)newSV (0);
1536
1537 sv_upgrade ((SV *)cv, SVt_PVCV);
1538
1539 CvANON_on (cv);
1540 CvISXSUB_on (cv);
1541 CvXSUB (cv) = xsub;
1542 GENSUB_ARG = arg;
1543
1544 return newRV_noinc ((SV *)cv);
1545}
1546
1432/** Coro ********************************************************************/ 1547/** Coro ********************************************************************/
1433 1548
1434static void 1549INLINE void
1435coro_enq (pTHX_ SV *coro_sv) 1550coro_enq (pTHX_ struct coro *coro)
1436{ 1551{
1437 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1552 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1438} 1553}
1439 1554
1440static SV * 1555INLINE SV *
1441coro_deq (pTHX) 1556coro_deq (pTHX)
1442{ 1557{
1443 int prio; 1558 int prio;
1444 1559
1445 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1560 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1448 1563
1449 return 0; 1564 return 0;
1450} 1565}
1451 1566
1452static int 1567static int
1453api_ready (SV *coro_sv) 1568api_ready (pTHX_ SV *coro_sv)
1454{ 1569{
1455 dTHX;
1456 struct coro *coro; 1570 struct coro *coro;
1457 SV *sv_hook; 1571 SV *sv_hook;
1458 void (*xs_hook)(void); 1572 void (*xs_hook)(void);
1459 1573
1460 if (SvROK (coro_sv)) 1574 if (SvROK (coro_sv))
… …
1465 if (coro->flags & CF_READY) 1579 if (coro->flags & CF_READY)
1466 return 0; 1580 return 0;
1467 1581
1468 coro->flags |= CF_READY; 1582 coro->flags |= CF_READY;
1469 1583
1470 LOCK;
1471
1472 sv_hook = coro_nready ? 0 : coro_readyhook; 1584 sv_hook = coro_nready ? 0 : coro_readyhook;
1473 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1585 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1474 1586
1475 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1587 coro_enq (aTHX_ coro);
1476 ++coro_nready; 1588 ++coro_nready;
1477 1589
1478 UNLOCK;
1479
1480 if (sv_hook) 1590 if (sv_hook)
1481 { 1591 {
1482 dSP; 1592 dSP;
1483 1593
1484 ENTER; 1594 ENTER;
1485 SAVETMPS; 1595 SAVETMPS;
1486 1596
1487 PUSHMARK (SP); 1597 PUSHMARK (SP);
1488 PUTBACK; 1598 PUTBACK;
1489 call_sv (sv_hook, G_DISCARD); 1599 call_sv (sv_hook, G_VOID | G_DISCARD);
1490 SPAGAIN;
1491 1600
1492 FREETMPS; 1601 FREETMPS;
1493 LEAVE; 1602 LEAVE;
1494 } 1603 }
1495 1604
… …
1498 1607
1499 return 1; 1608 return 1;
1500} 1609}
1501 1610
1502static int 1611static int
1503api_is_ready (SV *coro_sv) 1612api_is_ready (pTHX_ SV *coro_sv)
1504{ 1613{
1505 dTHX;
1506 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1614 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1507} 1615}
1508 1616
1617/* expects to own a reference to next->hv */
1618INLINE void
1619prepare_cede_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1620{
1621 SV *prev_sv = SvRV (coro_current);
1622
1623 ta->prev = SvSTATE_hv (prev_sv);
1624 ta->next = next;
1625
1626 TRANSFER_CHECK (*ta);
1627
1628 SvRV_set (coro_current, next->hv);
1629
1630 free_coro_mortal (aTHX);
1631 coro_mortal = prev_sv;
1632}
1633
1509static void 1634static void
1510prepare_schedule (pTHX_ struct transfer_args *ta) 1635prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1511{ 1636{
1512 SV *prev_sv, *next_sv;
1513
1514 for (;;) 1637 for (;;)
1515 { 1638 {
1516 LOCK;
1517 next_sv = coro_deq (aTHX); 1639 SV *next_sv = coro_deq (aTHX);
1518 1640
1519 /* nothing to schedule: call the idle handler */
1520 if (expect_false (!next_sv)) 1641 if (expect_false (!next_sv))
1521 { 1642 {
1643 /* nothing to schedule: call the idle handler */
1522 dSP; 1644 dSP;
1523 UNLOCK;
1524 1645
1525 ENTER; 1646 ENTER;
1526 SAVETMPS; 1647 SAVETMPS;
1527 1648
1528 PUSHMARK (SP); 1649 PUSHMARK (SP);
1529 PUTBACK; 1650 PUTBACK;
1530 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1651 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1531 SPAGAIN;
1532 1652
1533 FREETMPS; 1653 FREETMPS;
1534 LEAVE; 1654 LEAVE;
1535 continue;
1536 } 1655 }
1537 1656 else
1538 ta->next = SvSTATE (next_sv);
1539
1540 /* cannot transfer to destroyed coros, skip and look for next */
1541 if (expect_false (ta->next->flags & CF_DESTROYED))
1542 { 1657 {
1543 UNLOCK; 1658 struct coro *next = SvSTATE_hv (next_sv);
1544 SvREFCNT_dec (next_sv); 1659
1660 /* cannot transfer to destroyed coros, skip and look for next */
1661 if (expect_false (next->flags & CF_DESTROYED))
1545 /* coro_nready is already taken care of by destroy */ 1662 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1546 continue; 1663 else
1664 {
1665 next->flags &= ~CF_READY;
1666 --coro_nready;
1667
1668 return prepare_cede_to (aTHX_ ta, next);
1669 }
1547 } 1670 }
1548
1549 --coro_nready;
1550 UNLOCK;
1551 break;
1552 } 1671 }
1553
1554 /* free this only after the transfer */
1555 prev_sv = SvRV (coro_current);
1556 ta->prev = SvSTATE (prev_sv);
1557 TRANSFER_CHECK (*ta);
1558 assert (ta->next->flags & CF_READY);
1559 ta->next->flags &= ~CF_READY;
1560 SvRV_set (coro_current, next_sv);
1561
1562 LOCK;
1563 free_coro_mortal (aTHX);
1564 coro_mortal = prev_sv;
1565 UNLOCK;
1566} 1672}
1567 1673
1568static void 1674INLINE void
1569prepare_cede (pTHX_ struct transfer_args *ta) 1675prepare_cede (pTHX_ struct coro_transfer_args *ta)
1570{ 1676{
1571 api_ready (coro_current); 1677 api_ready (aTHX_ coro_current);
1572 prepare_schedule (aTHX_ ta); 1678 prepare_schedule (aTHX_ ta);
1573} 1679}
1574 1680
1681INLINE void
1682prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1683{
1684 SV *prev = SvRV (coro_current);
1685
1686 if (coro_nready)
1687 {
1688 prepare_schedule (aTHX_ ta);
1689 api_ready (aTHX_ prev);
1690 }
1691 else
1692 prepare_nop (aTHX_ ta);
1693}
1694
1695static void
1696api_schedule (pTHX)
1697{
1698 struct coro_transfer_args ta;
1699
1700 prepare_schedule (aTHX_ &ta);
1701 TRANSFER (ta, 1);
1702}
1703
1575static int 1704static int
1576prepare_cede_notself (pTHX_ struct transfer_args *ta) 1705api_cede (pTHX)
1577{ 1706{
1578 if (coro_nready) 1707 struct coro_transfer_args ta;
1579 { 1708
1580 SV *prev = SvRV (coro_current);
1581 prepare_schedule (aTHX_ ta); 1709 prepare_cede (aTHX_ &ta);
1582 api_ready (prev); 1710
1711 if (expect_true (ta.prev != ta.next))
1712 {
1713 TRANSFER (ta, 1);
1583 return 1; 1714 return 1;
1584 } 1715 }
1585 else 1716 else
1586 return 0; 1717 return 0;
1587} 1718}
1588 1719
1589static void
1590api_schedule (void)
1591{
1592 dTHX;
1593 struct transfer_args ta;
1594
1595 prepare_schedule (aTHX_ &ta);
1596 TRANSFER (ta, 1);
1597}
1598
1599static int 1720static int
1600api_cede (void) 1721api_cede_notself (pTHX)
1601{ 1722{
1602 dTHX; 1723 if (coro_nready)
1724 {
1603 struct transfer_args ta; 1725 struct coro_transfer_args ta;
1604 1726
1605 prepare_cede (aTHX_ &ta); 1727 prepare_cede_notself (aTHX_ &ta);
1606
1607 if (expect_true (ta.prev != ta.next))
1608 {
1609 TRANSFER (ta, 1); 1728 TRANSFER (ta, 1);
1610 return 1; 1729 return 1;
1611 } 1730 }
1612 else 1731 else
1613 return 0; 1732 return 0;
1614} 1733}
1615 1734
1616static int 1735static void
1617api_cede_notself (void)
1618{
1619 dTHX;
1620 struct transfer_args ta;
1621
1622 if (prepare_cede_notself (aTHX_ &ta))
1623 {
1624 TRANSFER (ta, 1);
1625 return 1;
1626 }
1627 else
1628 return 0;
1629}
1630
1631static void
1632api_trace (SV *coro_sv, int flags) 1736api_trace (pTHX_ SV *coro_sv, int flags)
1633{ 1737{
1634 dTHX;
1635 struct coro *coro = SvSTATE (coro_sv); 1738 struct coro *coro = SvSTATE (coro_sv);
1636 1739
1637 if (flags & CC_TRACE) 1740 if (flags & CC_TRACE)
1638 { 1741 {
1639 if (!coro->cctx) 1742 if (!coro->cctx)
1640 coro->cctx = cctx_new (); 1743 coro->cctx = cctx_new_run ();
1641 else if (!(coro->cctx->flags & CC_TRACE)) 1744 else if (!(coro->cctx->flags & CC_TRACE))
1642 croak ("cannot enable tracing on coroutine with custom stack"); 1745 croak ("cannot enable tracing on coroutine with custom stack,");
1643 1746
1644 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1747 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1645 } 1748 }
1646 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1749 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1647 { 1750 {
… …
1652 else 1755 else
1653 coro->slot->runops = RUNOPS_DEFAULT; 1756 coro->slot->runops = RUNOPS_DEFAULT;
1654 } 1757 }
1655} 1758}
1656 1759
1760/*****************************************************************************/
1761/* async pool handler */
1762
1657static int 1763static int
1658coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1764slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1659{ 1765{
1660 AV *padlist; 1766 HV *hv = (HV *)SvRV (coro_current);
1661 AV *av = (AV *)mg->mg_obj; 1767 struct coro *coro = (struct coro *)frame->data;
1662 1768
1663 abort (); 1769 if (!coro->invoke_cb)
1770 return 1; /* loop till we have invoke */
1771 else
1772 {
1773 hv_store (hv, "desc", sizeof ("desc") - 1,
1774 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1775
1776 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1777
1778 {
1779 dSP;
1780 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1781 PUTBACK;
1782 }
1783
1784 SvREFCNT_dec (GvAV (PL_defgv));
1785 GvAV (PL_defgv) = coro->invoke_av;
1786 coro->invoke_av = 0;
1787
1788 return 0;
1789 }
1790}
1791
1792static void
1793slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1794{
1795 HV *hv = (HV *)SvRV (coro_current);
1796 struct coro *coro = SvSTATE_hv ((SV *)hv);
1797
1798 if (expect_true (coro->saved_deffh))
1799 {
1800 /* subsequent iteration */
1801 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1802 coro->saved_deffh = 0;
1803
1804 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1805 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1806 {
1807 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1808 coro->invoke_av = newAV ();
1809
1810 frame->prepare = prepare_nop;
1811 }
1812 else
1813 {
1814 av_clear (GvAV (PL_defgv));
1815 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1816
1817 coro->prio = 0;
1818
1819 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1820 api_trace (aTHX_ coro_current, 0);
1821
1822 frame->prepare = prepare_schedule;
1823 av_push (av_async_pool, SvREFCNT_inc (hv));
1824 }
1825 }
1826 else
1827 {
1828 /* first iteration, simply fall through */
1829 frame->prepare = prepare_nop;
1830 }
1831
1832 frame->check = slf_check_pool_handler;
1833 frame->data = (void *)coro;
1834}
1835
1836/*****************************************************************************/
1837/* rouse callback */
1838
1839#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1840
1841static void
1842coro_rouse_callback (pTHX_ CV *cv)
1843{
1844 dXSARGS;
1845 SV *data = (SV *)GENSUB_ARG;
1846
1847 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1848 {
1849 /* first call, set args */
1850 AV *av = newAV ();
1851 SV *coro = SvRV (data);
1852
1853 SvRV_set (data, (SV *)av);
1854 api_ready (aTHX_ coro);
1855 SvREFCNT_dec (coro);
1856
1857 /* better take a full copy of the arguments */
1858 while (items--)
1859 av_store (av, items, newSVsv (ST (items)));
1860 }
1861
1862 XSRETURN_EMPTY;
1863}
1864
1865static int
1866slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1867{
1868 SV *data = (SV *)frame->data;
1869
1870 if (CORO_THROW)
1871 return 0;
1872
1873 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1874 return 1;
1875
1876 /* now push all results on the stack */
1877 {
1878 dSP;
1879 AV *av = (AV *)SvRV (data);
1880 int i;
1881
1882 EXTEND (SP, AvFILLp (av) + 1);
1883 for (i = 0; i <= AvFILLp (av); ++i)
1884 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1885
1886 /* we have stolen the elements, so ste length to zero and free */
1887 AvFILLp (av) = -1;
1888 av_undef (av);
1889
1890 PUTBACK;
1891 }
1664 1892
1665 return 0; 1893 return 0;
1666} 1894}
1667 1895
1668static MGVTBL coro_gensub_vtbl = { 1896static void
1669 0, 0, 0, 0, 1897slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1670 coro_gensub_free 1898{
1671}; 1899 SV *cb;
1900
1901 if (items)
1902 cb = arg [0];
1903 else
1904 {
1905 struct coro *coro = SvSTATE_current;
1906
1907 if (!coro->rouse_cb)
1908 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1909
1910 cb = sv_2mortal (coro->rouse_cb);
1911 coro->rouse_cb = 0;
1912 }
1913
1914 if (!SvROK (cb)
1915 || SvTYPE (SvRV (cb)) != SVt_PVCV
1916 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1917 croak ("Coro::rouse_wait called with illegal callback argument,");
1918
1919 {
1920 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1921 SV *data = (SV *)GENSUB_ARG;
1922
1923 frame->data = (void *)data;
1924 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1925 frame->check = slf_check_rouse_wait;
1926 }
1927}
1928
1929static SV *
1930coro_new_rouse_cb (pTHX)
1931{
1932 HV *hv = (HV *)SvRV (coro_current);
1933 struct coro *coro = SvSTATE_hv (hv);
1934 SV *data = newRV_inc ((SV *)hv);
1935 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1936
1937 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1938 SvREFCNT_dec (data); /* magicext increases the refcount */
1939
1940 SvREFCNT_dec (coro->rouse_cb);
1941 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1942
1943 return cb;
1944}
1945
1946/*****************************************************************************/
1947/* schedule-like-function opcode (SLF) */
1948
1949static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1950static const CV *slf_cv;
1951static SV **slf_argv;
1952static int slf_argc, slf_arga; /* count, allocated */
1953static I32 slf_ax; /* top of stack, for restore */
1954
1955/* this restores the stack in the case we patched the entersub, to */
1956/* recreate the stack frame as perl will on following calls */
1957/* since entersub cleared the stack */
1958static OP *
1959pp_restore (pTHX)
1960{
1961 int i;
1962 SV **SP = PL_stack_base + slf_ax;
1963
1964 PUSHMARK (SP);
1965
1966 EXTEND (SP, slf_argc + 1);
1967
1968 for (i = 0; i < slf_argc; ++i)
1969 PUSHs (sv_2mortal (slf_argv [i]));
1970
1971 PUSHs ((SV *)CvGV (slf_cv));
1972
1973 RETURNOP (slf_restore.op_first);
1974}
1975
1976static void
1977slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1978{
1979 SV **arg = (SV **)slf_frame.data;
1980
1981 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1982}
1983
1984static void
1985slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1986{
1987 if (items != 2)
1988 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1989
1990 frame->prepare = slf_prepare_transfer;
1991 frame->check = slf_check_nop;
1992 frame->data = (void *)arg; /* let's hope it will stay valid */
1993}
1994
1995static void
1996slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1997{
1998 frame->prepare = prepare_schedule;
1999 frame->check = slf_check_nop;
2000}
2001
2002static void
2003slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2004{
2005 frame->prepare = prepare_cede;
2006 frame->check = slf_check_nop;
2007}
2008
2009static void
2010slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2011{
2012 frame->prepare = prepare_cede_notself;
2013 frame->check = slf_check_nop;
2014}
2015
2016/*
2017 * these not obviously related functions are all rolled into one
2018 * function to increase chances that they all will call transfer with the same
2019 * stack offset
2020 * SLF stands for "schedule-like-function".
2021 */
2022static OP *
2023pp_slf (pTHX)
2024{
2025 I32 checkmark; /* mark SP to see how many elements check has pushed */
2026
2027 /* set up the slf frame, unless it has already been set-up */
2028 /* the latter happens when a new coro has been started */
2029 /* or when a new cctx was attached to an existing coroutine */
2030 if (expect_true (!slf_frame.prepare))
2031 {
2032 /* first iteration */
2033 dSP;
2034 SV **arg = PL_stack_base + TOPMARK + 1;
2035 int items = SP - arg; /* args without function object */
2036 SV *gv = *sp;
2037
2038 /* do a quick consistency check on the "function" object, and if it isn't */
2039 /* for us, divert to the real entersub */
2040 if (SvTYPE (gv) != SVt_PVGV
2041 || !GvCV (gv)
2042 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2043 return PL_ppaddr[OP_ENTERSUB](aTHX);
2044
2045 if (!(PL_op->op_flags & OPf_STACKED))
2046 {
2047 /* ampersand-form of call, use @_ instead of stack */
2048 AV *av = GvAV (PL_defgv);
2049 arg = AvARRAY (av);
2050 items = AvFILLp (av) + 1;
2051 }
2052
2053 /* now call the init function, which needs to set up slf_frame */
2054 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2055 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2056
2057 /* pop args */
2058 SP = PL_stack_base + POPMARK;
2059
2060 PUTBACK;
2061 }
2062
2063 /* now that we have a slf_frame, interpret it! */
2064 /* we use a callback system not to make the code needlessly */
2065 /* complicated, but so we can run multiple perl coros from one cctx */
2066
2067 do
2068 {
2069 struct coro_transfer_args ta;
2070
2071 slf_frame.prepare (aTHX_ &ta);
2072 TRANSFER (ta, 0);
2073
2074 checkmark = PL_stack_sp - PL_stack_base;
2075 }
2076 while (slf_frame.check (aTHX_ &slf_frame));
2077
2078 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2079
2080 /* exception handling */
2081 if (expect_false (CORO_THROW))
2082 {
2083 SV *exception = sv_2mortal (CORO_THROW);
2084
2085 CORO_THROW = 0;
2086 sv_setsv (ERRSV, exception);
2087 croak (0);
2088 }
2089
2090 /* return value handling - mostly like entersub */
2091 /* make sure we put something on the stack in scalar context */
2092 if (GIMME_V == G_SCALAR)
2093 {
2094 dSP;
2095 SV **bot = PL_stack_base + checkmark;
2096
2097 if (sp == bot) /* too few, push undef */
2098 bot [1] = &PL_sv_undef;
2099 else if (sp != bot + 1) /* too many, take last one */
2100 bot [1] = *sp;
2101
2102 SP = bot + 1;
2103
2104 PUTBACK;
2105 }
2106
2107 return NORMAL;
2108}
2109
2110static void
2111api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2112{
2113 int i;
2114 SV **arg = PL_stack_base + ax;
2115 int items = PL_stack_sp - arg + 1;
2116
2117 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2118
2119 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2120 && PL_op->op_ppaddr != pp_slf)
2121 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2122
2123 CvFLAGS (cv) |= CVf_SLF;
2124 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2125 slf_cv = cv;
2126
2127 /* we patch the op, and then re-run the whole call */
2128 /* we have to put the same argument on the stack for this to work */
2129 /* and this will be done by pp_restore */
2130 slf_restore.op_next = (OP *)&slf_restore;
2131 slf_restore.op_type = OP_CUSTOM;
2132 slf_restore.op_ppaddr = pp_restore;
2133 slf_restore.op_first = PL_op;
2134
2135 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2136
2137 if (PL_op->op_flags & OPf_STACKED)
2138 {
2139 if (items > slf_arga)
2140 {
2141 slf_arga = items;
2142 free (slf_argv);
2143 slf_argv = malloc (slf_arga * sizeof (SV *));
2144 }
2145
2146 slf_argc = items;
2147
2148 for (i = 0; i < items; ++i)
2149 slf_argv [i] = SvREFCNT_inc (arg [i]);
2150 }
2151 else
2152 slf_argc = 0;
2153
2154 PL_op->op_ppaddr = pp_slf;
2155 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2156
2157 PL_op = (OP *)&slf_restore;
2158}
1672 2159
1673/*****************************************************************************/ 2160/*****************************************************************************/
1674/* PerlIO::cede */ 2161/* PerlIO::cede */
1675 2162
1676typedef struct 2163typedef struct
… …
1704 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2191 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1705 double now = nvtime (); 2192 double now = nvtime ();
1706 2193
1707 if (now >= self->next) 2194 if (now >= self->next)
1708 { 2195 {
1709 api_cede (); 2196 api_cede (aTHX);
1710 self->next = now + self->every; 2197 self->next = now + self->every;
1711 } 2198 }
1712 2199
1713 return PerlIOBuf_flush (aTHX_ f); 2200 return PerlIOBuf_flush (aTHX_ f);
1714} 2201}
… …
1743 PerlIOBuf_get_ptr, 2230 PerlIOBuf_get_ptr,
1744 PerlIOBuf_get_cnt, 2231 PerlIOBuf_get_cnt,
1745 PerlIOBuf_set_ptrcnt, 2232 PerlIOBuf_set_ptrcnt,
1746}; 2233};
1747 2234
2235/*****************************************************************************/
2236/* Coro::Semaphore & Coro::Signal */
2237
2238static SV *
2239coro_waitarray_new (pTHX_ int count)
2240{
2241 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2242 AV *av = newAV ();
2243 SV **ary;
2244
2245 /* unfortunately, building manually saves memory */
2246 Newx (ary, 2, SV *);
2247 AvALLOC (av) = ary;
2248 /*AvARRAY (av) = ary;*/
2249 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2250 AvMAX (av) = 1;
2251 AvFILLp (av) = 0;
2252 ary [0] = newSViv (count);
2253
2254 return newRV_noinc ((SV *)av);
2255}
2256
2257/* semaphore */
2258
2259static void
2260coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2261{
2262 SV *count_sv = AvARRAY (av)[0];
2263 IV count = SvIVX (count_sv);
2264
2265 count += adjust;
2266 SvIVX (count_sv) = count;
2267
2268 /* now wake up as many waiters as are expected to lock */
2269 while (count > 0 && AvFILLp (av) > 0)
2270 {
2271 SV *cb;
2272
2273 /* swap first two elements so we can shift a waiter */
2274 AvARRAY (av)[0] = AvARRAY (av)[1];
2275 AvARRAY (av)[1] = count_sv;
2276 cb = av_shift (av);
2277
2278 if (SvOBJECT (cb))
2279 {
2280 api_ready (aTHX_ cb);
2281 --count;
2282 }
2283 else if (SvTYPE (cb) == SVt_PVCV)
2284 {
2285 dSP;
2286 PUSHMARK (SP);
2287 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2288 PUTBACK;
2289 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2290 }
2291
2292 SvREFCNT_dec (cb);
2293 }
2294}
2295
2296static void
2297coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2298{
2299 /* call $sem->adjust (0) to possibly wake up some other waiters */
2300 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2301}
2302
2303static int
2304slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2305{
2306 AV *av = (AV *)frame->data;
2307 SV *count_sv = AvARRAY (av)[0];
2308
2309 /* if we are about to throw, don't actually acquire the lock, just throw */
2310 if (CORO_THROW)
2311 return 0;
2312 else if (SvIVX (count_sv) > 0)
2313 {
2314 SvSTATE_current->on_destroy = 0;
2315
2316 if (acquire)
2317 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2318 else
2319 coro_semaphore_adjust (aTHX_ av, 0);
2320
2321 return 0;
2322 }
2323 else
2324 {
2325 int i;
2326 /* if we were woken up but can't down, we look through the whole */
2327 /* waiters list and only add us if we aren't in there already */
2328 /* this avoids some degenerate memory usage cases */
2329
2330 for (i = 1; i <= AvFILLp (av); ++i)
2331 if (AvARRAY (av)[i] == SvRV (coro_current))
2332 return 1;
2333
2334 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2335 return 1;
2336 }
2337}
2338
2339static int
2340slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2341{
2342 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2343}
2344
2345static int
2346slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2347{
2348 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2349}
2350
2351static void
2352slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2353{
2354 AV *av = (AV *)SvRV (arg [0]);
2355
2356 if (SvIVX (AvARRAY (av)[0]) > 0)
2357 {
2358 frame->data = (void *)av;
2359 frame->prepare = prepare_nop;
2360 }
2361 else
2362 {
2363 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2364
2365 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2366 frame->prepare = prepare_schedule;
2367
2368 /* to avoid race conditions when a woken-up coro gets terminated */
2369 /* we arrange for a temporary on_destroy that calls adjust (0) */
2370 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2371 }
2372}
2373
2374static void
2375slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2376{
2377 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2378 frame->check = slf_check_semaphore_down;
2379}
2380
2381static void
2382slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2383{
2384 if (items >= 2)
2385 {
2386 /* callback form */
2387 AV *av = (AV *)SvRV (arg [0]);
2388 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2389
2390 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2391
2392 if (SvIVX (AvARRAY (av)[0]) > 0)
2393 coro_semaphore_adjust (aTHX_ av, 0);
2394
2395 frame->prepare = prepare_nop;
2396 frame->check = slf_check_nop;
2397 }
2398 else
2399 {
2400 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2401 frame->check = slf_check_semaphore_wait;
2402 }
2403}
2404
2405/* signal */
2406
2407static void
2408coro_signal_wake (pTHX_ AV *av, int count)
2409{
2410 SvIVX (AvARRAY (av)[0]) = 0;
2411
2412 /* now signal count waiters */
2413 while (count > 0 && AvFILLp (av) > 0)
2414 {
2415 SV *cb;
2416
2417 /* swap first two elements so we can shift a waiter */
2418 cb = AvARRAY (av)[0];
2419 AvARRAY (av)[0] = AvARRAY (av)[1];
2420 AvARRAY (av)[1] = cb;
2421
2422 cb = av_shift (av);
2423
2424 api_ready (aTHX_ cb);
2425 sv_setiv (cb, 0); /* signal waiter */
2426 SvREFCNT_dec (cb);
2427
2428 --count;
2429 }
2430}
2431
2432static int
2433slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2434{
2435 /* if we are about to throw, also stop waiting */
2436 return SvROK ((SV *)frame->data) && !CORO_THROW;
2437}
2438
2439static void
2440slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2441{
2442 AV *av = (AV *)SvRV (arg [0]);
2443
2444 if (SvIVX (AvARRAY (av)[0]))
2445 {
2446 SvIVX (AvARRAY (av)[0]) = 0;
2447 frame->prepare = prepare_nop;
2448 frame->check = slf_check_nop;
2449 }
2450 else
2451 {
2452 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2453
2454 av_push (av, waiter);
2455
2456 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2457 frame->prepare = prepare_schedule;
2458 frame->check = slf_check_signal_wait;
2459 }
2460}
2461
2462/*****************************************************************************/
2463/* Coro::AIO */
2464
2465#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2466
2467/* helper storage struct */
2468struct io_state
2469{
2470 int errorno;
2471 I32 laststype; /* U16 in 5.10.0 */
2472 int laststatval;
2473 Stat_t statcache;
2474};
2475
2476static void
2477coro_aio_callback (pTHX_ CV *cv)
2478{
2479 dXSARGS;
2480 AV *state = (AV *)GENSUB_ARG;
2481 SV *coro = av_pop (state);
2482 SV *data_sv = newSV (sizeof (struct io_state));
2483
2484 av_extend (state, items - 1);
2485
2486 sv_upgrade (data_sv, SVt_PV);
2487 SvCUR_set (data_sv, sizeof (struct io_state));
2488 SvPOK_only (data_sv);
2489
2490 {
2491 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2492
2493 data->errorno = errno;
2494 data->laststype = PL_laststype;
2495 data->laststatval = PL_laststatval;
2496 data->statcache = PL_statcache;
2497 }
2498
2499 /* now build the result vector out of all the parameters and the data_sv */
2500 {
2501 int i;
2502
2503 for (i = 0; i < items; ++i)
2504 av_push (state, SvREFCNT_inc_NN (ST (i)));
2505 }
2506
2507 av_push (state, data_sv);
2508
2509 api_ready (aTHX_ coro);
2510 SvREFCNT_dec (coro);
2511 SvREFCNT_dec ((AV *)state);
2512}
2513
2514static int
2515slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2516{
2517 AV *state = (AV *)frame->data;
2518
2519 /* if we are about to throw, return early */
2520 /* this does not cancel the aio request, but at least */
2521 /* it quickly returns */
2522 if (CORO_THROW)
2523 return 0;
2524
2525 /* one element that is an RV? repeat! */
2526 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2527 return 1;
2528
2529 /* restore status */
2530 {
2531 SV *data_sv = av_pop (state);
2532 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2533
2534 errno = data->errorno;
2535 PL_laststype = data->laststype;
2536 PL_laststatval = data->laststatval;
2537 PL_statcache = data->statcache;
2538
2539 SvREFCNT_dec (data_sv);
2540 }
2541
2542 /* push result values */
2543 {
2544 dSP;
2545 int i;
2546
2547 EXTEND (SP, AvFILLp (state) + 1);
2548 for (i = 0; i <= AvFILLp (state); ++i)
2549 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2550
2551 PUTBACK;
2552 }
2553
2554 return 0;
2555}
2556
2557static void
2558slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2559{
2560 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2561 SV *coro_hv = SvRV (coro_current);
2562 struct coro *coro = SvSTATE_hv (coro_hv);
2563
2564 /* put our coroutine id on the state arg */
2565 av_push (state, SvREFCNT_inc_NN (coro_hv));
2566
2567 /* first see whether we have a non-zero priority and set it as AIO prio */
2568 if (coro->prio)
2569 {
2570 dSP;
2571
2572 static SV *prio_cv;
2573 static SV *prio_sv;
2574
2575 if (expect_false (!prio_cv))
2576 {
2577 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2578 prio_sv = newSViv (0);
2579 }
2580
2581 PUSHMARK (SP);
2582 sv_setiv (prio_sv, coro->prio);
2583 XPUSHs (prio_sv);
2584
2585 PUTBACK;
2586 call_sv (prio_cv, G_VOID | G_DISCARD);
2587 }
2588
2589 /* now call the original request */
2590 {
2591 dSP;
2592 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2593 int i;
2594
2595 PUSHMARK (SP);
2596
2597 /* first push all args to the stack */
2598 EXTEND (SP, items + 1);
2599
2600 for (i = 0; i < items; ++i)
2601 PUSHs (arg [i]);
2602
2603 /* now push the callback closure */
2604 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2605
2606 /* now call the AIO function - we assume our request is uncancelable */
2607 PUTBACK;
2608 call_sv ((SV *)req, G_VOID | G_DISCARD);
2609 }
2610
2611 /* now that the requets is going, we loop toll we have a result */
2612 frame->data = (void *)state;
2613 frame->prepare = prepare_schedule;
2614 frame->check = slf_check_aio_req;
2615}
2616
2617static void
2618coro_aio_req_xs (pTHX_ CV *cv)
2619{
2620 dXSARGS;
2621
2622 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2623
2624 XSRETURN_EMPTY;
2625}
2626
2627/*****************************************************************************/
1748 2628
1749MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2629MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1750 2630
1751PROTOTYPES: DISABLE 2631PROTOTYPES: DISABLE
1752 2632
1753BOOT: 2633BOOT:
1754{ 2634{
1755#ifdef USE_ITHREADS 2635#ifdef USE_ITHREADS
1756 MUTEX_INIT (&coro_lock); 2636# if CORO_PTHREAD
2637 coro_thx = PERL_GET_CONTEXT;
2638# endif
1757#endif 2639#endif
1758 BOOT_PAGESIZE; 2640 BOOT_PAGESIZE;
1759 2641
1760 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2642 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1761 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2643 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
1779 main_top_env = PL_top_env; 2661 main_top_env = PL_top_env;
1780 2662
1781 while (main_top_env->je_prev) 2663 while (main_top_env->je_prev)
1782 main_top_env = main_top_env->je_prev; 2664 main_top_env = main_top_env->je_prev;
1783 2665
2666 {
2667 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2668
2669 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2670 hv_store_ent (PL_custom_op_names, slf,
2671 newSVpv ("coro_slf", 0), 0);
2672
2673 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2674 hv_store_ent (PL_custom_op_descs, slf,
2675 newSVpv ("coro schedule like function", 0), 0);
2676 }
2677
1784 coroapi.ver = CORO_API_VERSION; 2678 coroapi.ver = CORO_API_VERSION;
1785 coroapi.rev = CORO_API_REVISION; 2679 coroapi.rev = CORO_API_REVISION;
2680
1786 coroapi.transfer = api_transfer; 2681 coroapi.transfer = api_transfer;
2682
2683 coroapi.sv_state = SvSTATE_;
2684 coroapi.execute_slf = api_execute_slf;
2685 coroapi.prepare_nop = prepare_nop;
2686 coroapi.prepare_schedule = prepare_schedule;
2687 coroapi.prepare_cede = prepare_cede;
2688 coroapi.prepare_cede_notself = prepare_cede_notself;
1787 2689
1788 { 2690 {
1789 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2691 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1790 2692
1791 if (!svp) croak ("Time::HiRes is required"); 2693 if (!svp) croak ("Time::HiRes is required");
… …
1797 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2699 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1798} 2700}
1799 2701
1800SV * 2702SV *
1801new (char *klass, ...) 2703new (char *klass, ...)
2704 ALIAS:
2705 Coro::new = 1
1802 CODE: 2706 CODE:
1803{ 2707{
1804 struct coro *coro; 2708 struct coro *coro;
1805 MAGIC *mg; 2709 MAGIC *mg;
1806 HV *hv; 2710 HV *hv;
2711 CV *cb;
1807 int i; 2712 int i;
2713
2714 if (items > 1)
2715 {
2716 cb = coro_sv_2cv (aTHX_ ST (1));
2717
2718 if (!ix)
2719 {
2720 if (CvISXSUB (cb))
2721 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2722
2723 if (!CvROOT (cb))
2724 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2725 }
2726 }
1808 2727
1809 Newz (0, coro, 1, struct coro); 2728 Newz (0, coro, 1, struct coro);
1810 coro->args = newAV (); 2729 coro->args = newAV ();
1811 coro->flags = CF_NEW; 2730 coro->flags = CF_NEW;
1812 2731
… …
1817 coro->hv = hv = newHV (); 2736 coro->hv = hv = newHV ();
1818 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2737 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1819 mg->mg_flags |= MGf_DUP; 2738 mg->mg_flags |= MGf_DUP;
1820 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2739 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1821 2740
2741 if (items > 1)
2742 {
1822 av_extend (coro->args, items - 1); 2743 av_extend (coro->args, items - 1 + ix - 1);
2744
2745 if (ix)
2746 {
2747 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2748 cb = cv_coro_run;
2749 }
2750
2751 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2752
1823 for (i = 1; i < items; i++) 2753 for (i = 2; i < items; i++)
1824 av_push (coro->args, newSVsv (ST (i))); 2754 av_push (coro->args, newSVsv (ST (i)));
2755 }
1825} 2756}
1826 OUTPUT: 2757 OUTPUT:
1827 RETVAL 2758 RETVAL
1828 2759
1829# these not obviously related functions are all rolled into the same xs
1830# function to increase chances that they all will call transfer with the same
1831# stack offset
1832void 2760void
1833_set_stacklevel (...) 2761transfer (...)
1834 ALIAS: 2762 PROTOTYPE: $$
1835 Coro::State::transfer = 1 2763 CODE:
1836 Coro::schedule = 2 2764 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1837 Coro::cede = 3
1838 Coro::cede_notself = 4
1839 CODE:
1840{
1841 struct transfer_args ta;
1842
1843 PUTBACK;
1844 switch (ix)
1845 {
1846 case 0:
1847 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1848 ta.next = 0;
1849 break;
1850
1851 case 1:
1852 if (items != 2)
1853 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1854
1855 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1856 break;
1857
1858 case 2:
1859 prepare_schedule (aTHX_ &ta);
1860 break;
1861
1862 case 3:
1863 prepare_cede (aTHX_ &ta);
1864 break;
1865
1866 case 4:
1867 if (!prepare_cede_notself (aTHX_ &ta))
1868 XSRETURN_EMPTY;
1869
1870 break;
1871 }
1872 SPAGAIN;
1873
1874 BARRIER;
1875 PUTBACK;
1876 TRANSFER (ta, 0);
1877 SPAGAIN; /* might be the sp of a different coroutine now */
1878 /* be extra careful not to ever do anything after TRANSFER */
1879}
1880 2765
1881bool 2766bool
1882_destroy (SV *coro_sv) 2767_destroy (SV *coro_sv)
1883 CODE: 2768 CODE:
1884 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2769 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1891 CODE: 2776 CODE:
1892 _exit (code); 2777 _exit (code);
1893 2778
1894int 2779int
1895cctx_stacksize (int new_stacksize = 0) 2780cctx_stacksize (int new_stacksize = 0)
2781 PROTOTYPE: ;$
1896 CODE: 2782 CODE:
1897 RETVAL = cctx_stacksize; 2783 RETVAL = cctx_stacksize;
1898 if (new_stacksize) 2784 if (new_stacksize)
1899 { 2785 {
1900 cctx_stacksize = new_stacksize; 2786 cctx_stacksize = new_stacksize;
… …
1903 OUTPUT: 2789 OUTPUT:
1904 RETVAL 2790 RETVAL
1905 2791
1906int 2792int
1907cctx_max_idle (int max_idle = 0) 2793cctx_max_idle (int max_idle = 0)
2794 PROTOTYPE: ;$
1908 CODE: 2795 CODE:
1909 RETVAL = cctx_max_idle; 2796 RETVAL = cctx_max_idle;
1910 if (max_idle > 1) 2797 if (max_idle > 1)
1911 cctx_max_idle = max_idle; 2798 cctx_max_idle = max_idle;
1912 OUTPUT: 2799 OUTPUT:
1913 RETVAL 2800 RETVAL
1914 2801
1915int 2802int
1916cctx_count () 2803cctx_count ()
2804 PROTOTYPE:
1917 CODE: 2805 CODE:
1918 RETVAL = cctx_count; 2806 RETVAL = cctx_count;
1919 OUTPUT: 2807 OUTPUT:
1920 RETVAL 2808 RETVAL
1921 2809
1922int 2810int
1923cctx_idle () 2811cctx_idle ()
2812 PROTOTYPE:
1924 CODE: 2813 CODE:
1925 RETVAL = cctx_idle; 2814 RETVAL = cctx_idle;
1926 OUTPUT: 2815 OUTPUT:
1927 RETVAL 2816 RETVAL
1928 2817
1929void 2818void
1930list () 2819list ()
2820 PROTOTYPE:
1931 PPCODE: 2821 PPCODE:
1932{ 2822{
1933 struct coro *coro; 2823 struct coro *coro;
1934 for (coro = coro_first; coro; coro = coro->next) 2824 for (coro = coro_first; coro; coro = coro->next)
1935 if (coro->hv) 2825 if (coro->hv)
… …
1994 RETVAL = boolSV (coro->flags & ix); 2884 RETVAL = boolSV (coro->flags & ix);
1995 OUTPUT: 2885 OUTPUT:
1996 RETVAL 2886 RETVAL
1997 2887
1998void 2888void
2889throw (Coro::State self, SV *throw = &PL_sv_undef)
2890 PROTOTYPE: $;$
2891 CODE:
2892{
2893 struct coro *current = SvSTATE_current;
2894 SV **throwp = self == current ? &CORO_THROW : &self->except;
2895 SvREFCNT_dec (*throwp);
2896 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2897}
2898
2899void
1999api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2900api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2901 PROTOTYPE: $;$
2902 C_ARGS: aTHX_ coro, flags
2000 2903
2001SV * 2904SV *
2002has_cctx (Coro::State coro) 2905has_cctx (Coro::State coro)
2003 PROTOTYPE: $ 2906 PROTOTYPE: $
2004 CODE: 2907 CODE:
… …
2012 CODE: 2915 CODE:
2013 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2916 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2014 OUTPUT: 2917 OUTPUT:
2015 RETVAL 2918 RETVAL
2016 2919
2017IV 2920UV
2018rss (Coro::State coro) 2921rss (Coro::State coro)
2019 PROTOTYPE: $ 2922 PROTOTYPE: $
2020 ALIAS: 2923 ALIAS:
2021 usecount = 1 2924 usecount = 1
2022 CODE: 2925 CODE:
… …
2028 OUTPUT: 2931 OUTPUT:
2029 RETVAL 2932 RETVAL
2030 2933
2031void 2934void
2032force_cctx () 2935force_cctx ()
2936 PROTOTYPE:
2033 CODE: 2937 CODE:
2034 struct coro *coro = SvSTATE (coro_current);
2035 coro->cctx->idle_sp = 0; 2938 SvSTATE_current->cctx->idle_sp = 0;
2036 2939
2037void 2940void
2038swap_defsv (Coro::State self) 2941swap_defsv (Coro::State self)
2039 PROTOTYPE: $ 2942 PROTOTYPE: $
2040 ALIAS: 2943 ALIAS:
2041 swap_defav = 1 2944 swap_defav = 1
2042 CODE: 2945 CODE:
2043 if (!self->slot) 2946 if (!self->slot)
2044 croak ("cannot swap state with coroutine that has no saved state"); 2947 croak ("cannot swap state with coroutine that has no saved state,");
2045 else 2948 else
2046 { 2949 {
2047 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2950 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2048 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2951 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2049 2952
2050 SV *tmp = *src; *src = *dst; *dst = tmp; 2953 SV *tmp = *src; *src = *dst; *dst = tmp;
2051 } 2954 }
2052 2955
2956
2053MODULE = Coro::State PACKAGE = Coro 2957MODULE = Coro::State PACKAGE = Coro
2054 2958
2055BOOT: 2959BOOT:
2056{ 2960{
2057 int i; 2961 int i;
2058 2962
2059 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2963 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2060 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2964 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2061 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2965 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2062 2966 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2967 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2063 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2968 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2064 SvREADONLY_on (coro_current); 2969
2970 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2971 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2972 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
2973 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2065 2974
2066 coro_stash = gv_stashpv ("Coro", TRUE); 2975 coro_stash = gv_stashpv ("Coro", TRUE);
2067 2976
2068 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2977 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2069 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2978 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2074 2983
2075 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2984 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2076 coro_ready[i] = newAV (); 2985 coro_ready[i] = newAV ();
2077 2986
2078 { 2987 {
2079 SV *sv = perl_get_sv ("Coro::API", TRUE); 2988 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2080 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2081 2989
2082 coroapi.schedule = api_schedule; 2990 coroapi.schedule = api_schedule;
2083 coroapi.cede = api_cede; 2991 coroapi.cede = api_cede;
2084 coroapi.cede_notself = api_cede_notself; 2992 coroapi.cede_notself = api_cede_notself;
2085 coroapi.ready = api_ready; 2993 coroapi.ready = api_ready;
2086 coroapi.is_ready = api_is_ready; 2994 coroapi.is_ready = api_is_ready;
2087 coroapi.nready = &coro_nready; 2995 coroapi.nready = coro_nready;
2088 coroapi.current = coro_current; 2996 coroapi.current = coro_current;
2089 2997
2090 GCoroAPI = &coroapi; 2998 /*GCoroAPI = &coroapi;*/
2091 sv_setiv (sv, (IV)&coroapi); 2999 sv_setiv (sv, (IV)&coroapi);
2092 SvREADONLY_on (sv); 3000 SvREADONLY_on (sv);
2093 } 3001 }
2094} 3002}
3003
3004void
3005schedule (...)
3006 CODE:
3007 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3008
3009void
3010cede (...)
3011 CODE:
3012 CORO_EXECUTE_SLF_XS (slf_init_cede);
3013
3014void
3015cede_notself (...)
3016 CODE:
3017 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2095 3018
2096void 3019void
2097_set_current (SV *current) 3020_set_current (SV *current)
2098 PROTOTYPE: $ 3021 PROTOTYPE: $
2099 CODE: 3022 CODE:
… …
2102 3025
2103void 3026void
2104_set_readyhook (SV *hook) 3027_set_readyhook (SV *hook)
2105 PROTOTYPE: $ 3028 PROTOTYPE: $
2106 CODE: 3029 CODE:
2107 LOCK;
2108 SvREFCNT_dec (coro_readyhook); 3030 SvREFCNT_dec (coro_readyhook);
2109 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3031 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2110 UNLOCK;
2111 3032
2112int 3033int
2113prio (Coro::State coro, int newprio = 0) 3034prio (Coro::State coro, int newprio = 0)
3035 PROTOTYPE: $;$
2114 ALIAS: 3036 ALIAS:
2115 nice = 1 3037 nice = 1
2116 CODE: 3038 CODE:
2117{ 3039{
2118 RETVAL = coro->prio; 3040 RETVAL = coro->prio;
… …
2133 3055
2134SV * 3056SV *
2135ready (SV *self) 3057ready (SV *self)
2136 PROTOTYPE: $ 3058 PROTOTYPE: $
2137 CODE: 3059 CODE:
2138 RETVAL = boolSV (api_ready (self)); 3060 RETVAL = boolSV (api_ready (aTHX_ self));
2139 OUTPUT: 3061 OUTPUT:
2140 RETVAL 3062 RETVAL
2141 3063
2142int 3064int
2143nready (...) 3065nready (...)
… …
2146 RETVAL = coro_nready; 3068 RETVAL = coro_nready;
2147 OUTPUT: 3069 OUTPUT:
2148 RETVAL 3070 RETVAL
2149 3071
2150void 3072void
2151throw (Coro::State self, SV *throw = &PL_sv_undef) 3073_pool_handler (...)
2152 PROTOTYPE: $;$ 3074 CODE:
2153 CODE: 3075 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2154 SvREFCNT_dec (self->throw);
2155 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2156 3076
2157# for async_pool speedup
2158void 3077void
2159_pool_1 (SV *cb) 3078async_pool (SV *cv, ...)
3079 PROTOTYPE: &@
3080 PPCODE:
3081{
3082 HV *hv = (HV *)av_pop (av_async_pool);
3083 AV *av = newAV ();
3084 SV *cb = ST (0);
3085 int i;
3086
3087 av_extend (av, items - 2);
3088 for (i = 1; i < items; ++i)
3089 av_push (av, SvREFCNT_inc_NN (ST (i)));
3090
3091 if ((SV *)hv == &PL_sv_undef)
3092 {
3093 PUSHMARK (SP);
3094 EXTEND (SP, 2);
3095 PUSHs (sv_Coro);
3096 PUSHs ((SV *)cv_pool_handler);
3097 PUTBACK;
3098 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3099 SPAGAIN;
3100
3101 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3102 }
3103
3104 {
3105 struct coro *coro = SvSTATE_hv (hv);
3106
3107 assert (!coro->invoke_cb);
3108 assert (!coro->invoke_av);
3109 coro->invoke_cb = SvREFCNT_inc (cb);
3110 coro->invoke_av = av;
3111 }
3112
3113 api_ready (aTHX_ (SV *)hv);
3114
3115 if (GIMME_V != G_VOID)
3116 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3117 else
3118 SvREFCNT_dec (hv);
3119}
3120
3121SV *
3122rouse_cb ()
3123 PROTOTYPE:
2160 CODE: 3124 CODE:
2161{ 3125 RETVAL = coro_new_rouse_cb (aTHX);
2162 struct coro *coro = SvSTATE (coro_current);
2163 HV *hv = (HV *)SvRV (coro_current);
2164 AV *defav = GvAV (PL_defgv);
2165 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2166 AV *invoke_av;
2167 int i, len;
2168
2169 if (!invoke)
2170 {
2171 SV *old = PL_diehook;
2172 PL_diehook = 0;
2173 SvREFCNT_dec (old);
2174 croak ("\3async_pool terminate\2\n");
2175 }
2176
2177 SvREFCNT_dec (coro->saved_deffh);
2178 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2179
2180 hv_store (hv, "desc", sizeof ("desc") - 1,
2181 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2182
2183 invoke_av = (AV *)SvRV (invoke);
2184 len = av_len (invoke_av);
2185
2186 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2187
2188 if (len > 0)
2189 {
2190 av_fill (defav, len - 1);
2191 for (i = 0; i < len; ++i)
2192 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2193 }
2194
2195 SvREFCNT_dec (invoke);
2196}
2197
2198void
2199_pool_2 (SV *cb)
2200 CODE:
2201{
2202 struct coro *coro = SvSTATE (coro_current);
2203
2204 sv_setsv (cb, &PL_sv_undef);
2205
2206 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2207 coro->saved_deffh = 0;
2208
2209 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2210 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2211 {
2212 SV *old = PL_diehook;
2213 PL_diehook = 0;
2214 SvREFCNT_dec (old);
2215 croak ("\3async_pool terminate\2\n");
2216 }
2217
2218 av_clear (GvAV (PL_defgv));
2219 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2220 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2221
2222 coro->prio = 0;
2223
2224 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2225 api_trace (coro_current, 0);
2226
2227 av_push (av_async_pool, newSVsv (coro_current));
2228}
2229
2230#if 0
2231
2232void
2233_generator_call (...)
2234 PROTOTYPE: @
2235 PPCODE:
2236 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2237 xxxx
2238 abort ();
2239
2240SV *
2241gensub (SV *sub, ...)
2242 PROTOTYPE: &;@
2243 CODE:
2244{
2245 struct coro *coro;
2246 MAGIC *mg;
2247 CV *xcv;
2248 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2249 int i;
2250
2251 CvGV (ncv) = CvGV (cv);
2252 CvFILE (ncv) = CvFILE (cv);
2253
2254 Newz (0, coro, 1, struct coro);
2255 coro->args = newAV ();
2256 coro->flags = CF_NEW;
2257
2258 av_extend (coro->args, items - 1);
2259 for (i = 1; i < items; i++)
2260 av_push (coro->args, newSVsv (ST (i)));
2261
2262 CvISXSUB_on (ncv);
2263 CvXSUBANY (ncv).any_ptr = (void *)coro;
2264
2265 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2266
2267 CvXSUB (ncv) = CvXSUB (xcv);
2268 CvANON_on (ncv);
2269
2270 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2271 RETVAL = newRV_noinc ((SV *)ncv);
2272}
2273 OUTPUT: 3126 OUTPUT:
2274 RETVAL 3127 RETVAL
2275 3128
2276#endif
2277
2278
2279MODULE = Coro::State PACKAGE = Coro::AIO
2280
2281void 3129void
2282_get_state (SV *self) 3130rouse_wait (...)
3131 PROTOTYPE: ;$
2283 PPCODE: 3132 PPCODE:
2284{ 3133 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2285 AV *defav = GvAV (PL_defgv);
2286 AV *av = newAV ();
2287 int i;
2288 SV *data_sv = newSV (sizeof (struct io_state));
2289 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2290 SvCUR_set (data_sv, sizeof (struct io_state));
2291 SvPOK_only (data_sv);
2292 3134
2293 data->errorno = errno;
2294 data->laststype = PL_laststype;
2295 data->laststatval = PL_laststatval;
2296 data->statcache = PL_statcache;
2297 3135
2298 av_extend (av, AvFILLp (defav) + 1 + 1); 3136MODULE = Coro::State PACKAGE = PerlIO::cede
2299 3137
2300 for (i = 0; i <= AvFILLp (defav); ++i) 3138BOOT:
2301 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3139 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2302 3140
2303 av_push (av, data_sv);
2304 3141
2305 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3142MODULE = Coro::State PACKAGE = Coro::Semaphore
2306 3143
2307 api_ready (self); 3144SV *
2308} 3145new (SV *klass, SV *count = 0)
3146 CODE:
3147 RETVAL = sv_bless (
3148 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3149 GvSTASH (CvGV (cv))
3150 );
3151 OUTPUT:
3152 RETVAL
3153
3154# helper for Coro::Channel
3155SV *
3156_alloc (int count)
3157 CODE:
3158 RETVAL = coro_waitarray_new (aTHX_ count);
3159 OUTPUT:
3160 RETVAL
3161
3162SV *
3163count (SV *self)
3164 CODE:
3165 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3166 OUTPUT:
3167 RETVAL
2309 3168
2310void 3169void
2311_set_state (SV *state) 3170up (SV *self, int adjust = 1)
2312 PROTOTYPE: $ 3171 ALIAS:
3172 adjust = 1
3173 CODE:
3174 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3175
3176void
3177down (...)
3178 CODE:
3179 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3180
3181void
3182wait (...)
3183 CODE:
3184 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3185
3186void
3187try (SV *self)
3188 PPCODE:
3189{
3190 AV *av = (AV *)SvRV (self);
3191 SV *count_sv = AvARRAY (av)[0];
3192 IV count = SvIVX (count_sv);
3193
3194 if (count > 0)
3195 {
3196 --count;
3197 SvIVX (count_sv) = count;
3198 XSRETURN_YES;
3199 }
3200 else
3201 XSRETURN_NO;
3202}
3203
3204void
3205waiters (SV *self)
3206 PPCODE:
3207{
3208 AV *av = (AV *)SvRV (self);
3209 int wcount = AvFILLp (av) + 1 - 1;
3210
3211 if (GIMME_V == G_SCALAR)
3212 XPUSHs (sv_2mortal (newSViv (wcount)));
3213 else
3214 {
3215 int i;
3216 EXTEND (SP, wcount);
3217 for (i = 1; i <= wcount; ++i)
3218 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3219 }
3220}
3221
3222MODULE = Coro::State PACKAGE = Coro::Signal
3223
3224SV *
3225new (SV *klass)
2313 PPCODE: 3226 CODE:
3227 RETVAL = sv_bless (
3228 coro_waitarray_new (aTHX_ 0),
3229 GvSTASH (CvGV (cv))
3230 );
3231 OUTPUT:
3232 RETVAL
3233
3234void
3235wait (...)
3236 CODE:
3237 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3238
3239void
3240broadcast (SV *self)
3241 CODE:
2314{ 3242{
2315 AV *av = (AV *)SvRV (state); 3243 AV *av = (AV *)SvRV (self);
2316 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3244 coro_signal_wake (aTHX_ av, AvFILLp (av));
2317 int i; 3245}
2318 3246
2319 errno = data->errorno; 3247void
2320 PL_laststype = data->laststype; 3248send (SV *self)
2321 PL_laststatval = data->laststatval; 3249 CODE:
2322 PL_statcache = data->statcache; 3250{
3251 AV *av = (AV *)SvRV (self);
2323 3252
2324 EXTEND (SP, AvFILLp (av)); 3253 if (AvFILLp (av))
2325 for (i = 0; i < AvFILLp (av); ++i) 3254 coro_signal_wake (aTHX_ av, 1);
2326 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3255 else
3256 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2327} 3257}
3258
3259IV
3260awaited (SV *self)
3261 CODE:
3262 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3263 OUTPUT:
3264 RETVAL
2328 3265
2329 3266
2330MODULE = Coro::State PACKAGE = Coro::AnyEvent 3267MODULE = Coro::State PACKAGE = Coro::AnyEvent
2331 3268
2332BOOT: 3269BOOT:
2333 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3270 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2334 3271
2335SV * 3272void
2336_schedule (...) 3273_schedule (...)
2337 PROTOTYPE: @
2338 CODE: 3274 CODE:
2339{ 3275{
2340 static int incede; 3276 static int incede;
2341 3277
2342 api_cede_notself (); 3278 api_cede_notself (aTHX);
2343 3279
2344 ++incede; 3280 ++incede;
2345 while (coro_nready >= incede && api_cede ()) 3281 while (coro_nready >= incede && api_cede (aTHX))
2346 ; 3282 ;
2347 3283
2348 sv_setsv (sv_activity, &PL_sv_undef); 3284 sv_setsv (sv_activity, &PL_sv_undef);
2349 if (coro_nready >= incede) 3285 if (coro_nready >= incede)
2350 { 3286 {
2351 PUSHMARK (SP); 3287 PUSHMARK (SP);
2352 PUTBACK; 3288 PUTBACK;
2353 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3289 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2354 SPAGAIN;
2355 } 3290 }
2356 3291
2357 --incede; 3292 --incede;
2358} 3293}
2359 3294
2360 3295
2361MODULE = Coro::State PACKAGE = PerlIO::cede 3296MODULE = Coro::State PACKAGE = Coro::AIO
2362 3297
2363BOOT: 3298void
2364 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3299_register (char *target, char *proto, SV *req)
3300 CODE:
3301{
3302 CV *req_cv = coro_sv_2cv (aTHX_ req);
3303 /* newXSproto doesn't return the CV on 5.8 */
3304 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3305 sv_setpv ((SV *)slf_cv, proto);
3306 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3307}
3308

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