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Comparing Coro/Coro/State.xs (file contents):
Revision 1.253 by root, Fri Nov 7 20:12:26 2008 UTC vs.
Revision 1.312 by root, Thu Nov 20 03:10:30 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 */
57#define MAX_IDLE_CCTX 8 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
103 103
104/* 5.8.7 */ 104/* 5.8.7 */
105#ifndef SvRV_set 105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif 107#endif
… …
119# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 120#endif
121 121
122/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 123 * portable way as possible. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
124#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
125#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
126 131
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 133
129#if __GNUC__ >= 3 134#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value)) 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
133#else 138#else
134# define attribute(x) 139# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr) 140# define expect(expr,value) (expr)
141# define INLINE static
137#endif 142#endif
138 143
139#define expect_false(expr) expect ((expr) != 0, 0) 144#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
141 146
142#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
143 148
144#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
145 151
146#ifdef USE_ITHREADS 152#ifdef USE_ITHREADS
147static perl_mutex coro_lock; 153# if CORO_PTHREAD
148# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0) 154static void *coro_thx;
149# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0) 155# endif
150#else
151# define LOCK (void)0
152# define UNLOCK (void)0
153#endif 156#endif
154 157
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
165static double (*nvtime)(); /* so why doesn't it take void? */ 158static double (*nvtime)(); /* so why doesn't it take void? */
166 159
160/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX);
163
164static U32 cctx_gen;
167static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
168static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
169static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
170static JMPENV *main_top_env; 168static JMPENV *main_top_env;
171static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
172static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
… …
178static HV *hv_sig; /* %SIG */ 176static HV *hv_sig; /* %SIG */
179 177
180/* async_pool helper stuff */ 178/* async_pool helper stuff */
181static SV *sv_pool_rss; 179static SV *sv_pool_rss;
182static SV *sv_pool_size; 180static SV *sv_pool_size;
181static SV *sv_async_pool_idle;
183static AV *av_async_pool; 182static AV *av_async_pool;
183static SV *sv_Coro;
184static CV *cv_pool_handler;
185static CV *cv_coro_new;
184 186
185/* Coro::AnyEvent */ 187/* Coro::AnyEvent */
186static SV *sv_activity; 188static SV *sv_activity;
187 189
188static struct coro_cctx *cctx_first; 190static struct coro_cctx *cctx_first;
… …
196 CC_TRACE_LINE = 0x10, /* trace each statement */ 198 CC_TRACE_LINE = 0x10, /* trace each statement */
197 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 199 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
198}; 200};
199 201
200/* this is a structure representing a c-level coroutine */ 202/* this is a structure representing a c-level coroutine */
201typedef struct coro_cctx { 203typedef struct coro_cctx
204{
202 struct coro_cctx *next; 205 struct coro_cctx *next;
203 206
204 /* the stack */ 207 /* the stack */
205 void *sptr; 208 void *sptr;
206 size_t ssize; 209 size_t ssize;
… …
209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 212 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 213 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
211 JMPENV *top_env; 214 JMPENV *top_env;
212 coro_context cctx; 215 coro_context cctx;
213 216
217 U32 gen;
214#if CORO_USE_VALGRIND 218#if CORO_USE_VALGRIND
215 int valgrind_id; 219 int valgrind_id;
216#endif 220#endif
217 unsigned char flags; 221 unsigned char flags;
218} coro_cctx; 222} coro_cctx;
… …
223 CF_NEW = 0x0004, /* has never been switched to */ 227 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 228 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
225}; 229};
226 230
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 231/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct { 232typedef struct
233{
229 SV *defsv; 234 SV *defsv;
230 AV *defav; 235 AV *defav;
231 SV *errsv; 236 SV *errsv;
232 SV *irsgv; 237 SV *irsgv;
233#define VAR(name,type) type name; 238#define VAR(name,type) type name;
… …
237 242
238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 243#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
239 244
240/* this is a structure representing a perl-level coroutine */ 245/* this is a structure representing a perl-level coroutine */
241struct coro { 246struct coro {
242 /* the c coroutine allocated to this perl coroutine, if any */ 247 /* the C coroutine allocated to this perl coroutine, if any */
243 coro_cctx *cctx; 248 coro_cctx *cctx;
244 249
245 /* process data */ 250 /* state data */
251 struct CoroSLF slf_frame; /* saved slf frame */
246 AV *mainstack; 252 AV *mainstack;
247 perl_slots *slot; /* basically the saved sp */ 253 perl_slots *slot; /* basically the saved sp */
248 254
255 CV *startcv; /* the CV to execute */
249 AV *args; /* data associated with this coroutine (initial args) */ 256 AV *args; /* data associated with this coroutine (initial args) */
250 int refcnt; /* coroutines are refcounted, yes */ 257 int refcnt; /* coroutines are refcounted, yes */
251 int flags; /* CF_ flags */ 258 int flags; /* CF_ flags */
252 HV *hv; /* the perl hash associated with this coro, if any */ 259 HV *hv; /* the perl hash associated with this coro, if any */
260 void (*on_destroy)(pTHX_ struct coro *coro);
253 261
254 /* statistics */ 262 /* statistics */
255 int usecount; /* number of transfers to this coro */ 263 int usecount; /* number of transfers to this coro */
256 264
257 /* coro process data */ 265 /* coro process data */
258 int prio; 266 int prio;
259 SV *throw; /* exception to be thrown */ 267 SV *except; /* exception to be thrown */
268 SV *rouse_cb;
260 269
261 /* async_pool */ 270 /* async_pool */
262 SV *saved_deffh; 271 SV *saved_deffh;
272 SV *invoke_cb;
273 AV *invoke_av;
263 274
264 /* linked list */ 275 /* linked list */
265 struct coro *next, *prev; 276 struct coro *next, *prev;
266}; 277};
267 278
268typedef struct coro *Coro__State; 279typedef struct coro *Coro__State;
269typedef struct coro *Coro__State_or_hashref; 280typedef struct coro *Coro__State_or_hashref;
281
282/* the following variables are effectively part of the perl context */
283/* and get copied between struct coro and these variables */
284/* the mainr easonw e don't support windows process emulation */
285static struct CoroSLF slf_frame; /* the current slf frame */
270 286
271/** Coro ********************************************************************/ 287/** Coro ********************************************************************/
272 288
273#define PRIO_MAX 3 289#define PRIO_MAX 3
274#define PRIO_HIGH 1 290#define PRIO_HIGH 1
… …
278#define PRIO_MIN -4 294#define PRIO_MIN -4
279 295
280/* for Coro.pm */ 296/* for Coro.pm */
281static SV *coro_current; 297static SV *coro_current;
282static SV *coro_readyhook; 298static SV *coro_readyhook;
283static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 299static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
284static int coro_nready; 300static CV *cv_coro_run, *cv_coro_terminate;
285static struct coro *coro_first; 301static struct coro *coro_first;
302#define coro_nready coroapi.nready
286 303
287/** lowlevel stuff **********************************************************/ 304/** lowlevel stuff **********************************************************/
288 305
289static SV * 306static SV *
290coro_get_sv (pTHX_ const char *name, int create) 307coro_get_sv (pTHX_ const char *name, int create)
… …
312#if PERL_VERSION_ATLEAST (5,10,0) 329#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_hv (name, create); 331 get_hv (name, create);
315#endif 332#endif
316 return get_hv (name, create); 333 return get_hv (name, create);
334}
335
336/* may croak */
337INLINE CV *
338coro_sv_2cv (pTHX_ SV *sv)
339{
340 HV *st;
341 GV *gvp;
342 return sv_2cv (sv, &st, &gvp, 0);
317} 343}
318 344
319static AV * 345static AV *
320coro_clone_padlist (pTHX_ CV *cv) 346coro_clone_padlist (pTHX_ CV *cv)
321{ 347{
… …
375 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 401 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
376 402
377 return 0; 403 return 0;
378} 404}
379 405
380#define CORO_MAGIC_type_cv PERL_MAGIC_ext 406#define CORO_MAGIC_type_cv 26
381#define CORO_MAGIC_type_state PERL_MAGIC_ext 407#define CORO_MAGIC_type_state PERL_MAGIC_ext
382 408
383static MGVTBL coro_cv_vtbl = { 409static MGVTBL coro_cv_vtbl = {
384 0, 0, 0, 0, 410 0, 0, 0, 0,
385 coro_cv_free 411 coro_cv_free
386}; 412};
387 413
414#define CORO_MAGIC_NN(sv, type) \
415 (expect_true (SvMAGIC (sv)->mg_type == type) \
416 ? SvMAGIC (sv) \
417 : mg_find (sv, type))
418
388#define CORO_MAGIC(sv, type) \ 419#define CORO_MAGIC(sv, type) \
389 SvMAGIC (sv) \ 420 (expect_true (SvMAGIC (sv)) \
390 ? SvMAGIC (sv)->mg_type == type \ 421 ? CORO_MAGIC_NN (sv, type) \
391 ? SvMAGIC (sv) \
392 : mg_find (sv, type) \
393 : 0 422 : 0)
394 423
395#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 424#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
396#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 425#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
397 426
398static struct coro * 427INLINE struct coro *
399SvSTATE_ (pTHX_ SV *coro) 428SvSTATE_ (pTHX_ SV *coro)
400{ 429{
401 HV *stash; 430 HV *stash;
402 MAGIC *mg; 431 MAGIC *mg;
403 432
… …
418 mg = CORO_MAGIC_state (coro); 447 mg = CORO_MAGIC_state (coro);
419 return (struct coro *)mg->mg_ptr; 448 return (struct coro *)mg->mg_ptr;
420} 449}
421 450
422#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 451#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
452
453/* faster than SvSTATE, but expects a coroutine hv */
454#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
455#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
423 456
424/* the next two functions merely cache the padlists */ 457/* the next two functions merely cache the padlists */
425static void 458static void
426get_padlist (pTHX_ CV *cv) 459get_padlist (pTHX_ CV *cv)
427{ 460{
… …
433 else 466 else
434 { 467 {
435#if CORO_PREFER_PERL_FUNCTIONS 468#if CORO_PREFER_PERL_FUNCTIONS
436 /* this is probably cleaner? but also slower! */ 469 /* this is probably cleaner? but also slower! */
437 /* in practise, it seems to be less stable */ 470 /* in practise, it seems to be less stable */
438 CV *cp = Perl_cv_clone (cv); 471 CV *cp = Perl_cv_clone (aTHX_ cv);
439 CvPADLIST (cv) = CvPADLIST (cp); 472 CvPADLIST (cv) = CvPADLIST (cp);
440 CvPADLIST (cp) = 0; 473 CvPADLIST (cp) = 0;
441 SvREFCNT_dec (cp); 474 SvREFCNT_dec (cp);
442#else 475#else
443 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 476 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
494 CvPADLIST (cv) = (AV *)POPs; 527 CvPADLIST (cv) = (AV *)POPs;
495 } 528 }
496 529
497 PUTBACK; 530 PUTBACK;
498 } 531 }
532
533 slf_frame = c->slf_frame;
534 CORO_THROW = c->except;
499} 535}
500 536
501static void 537static void
502save_perl (pTHX_ Coro__State c) 538save_perl (pTHX_ Coro__State c)
503{ 539{
540 c->except = CORO_THROW;
541 c->slf_frame = slf_frame;
542
504 { 543 {
505 dSP; 544 dSP;
506 I32 cxix = cxstack_ix; 545 I32 cxix = cxstack_ix;
507 PERL_CONTEXT *ccstk = cxstack; 546 PERL_CONTEXT *ccstk = cxstack;
508 PERL_SI *top_si = PL_curstackinfo; 547 PERL_SI *top_si = PL_curstackinfo;
… …
575 #undef VAR 614 #undef VAR
576 } 615 }
577} 616}
578 617
579/* 618/*
580 * allocate various perl stacks. This is an exact copy 619 * allocate various perl stacks. This is almost an exact copy
581 * of perl.c:init_stacks, except that it uses less memory 620 * of perl.c:init_stacks, except that it uses less memory
582 * on the (sometimes correct) assumption that coroutines do 621 * on the (sometimes correct) assumption that coroutines do
583 * not usually need a lot of stackspace. 622 * not usually need a lot of stackspace.
584 */ 623 */
585#if CORO_PREFER_PERL_FUNCTIONS 624#if CORO_PREFER_PERL_FUNCTIONS
586# define coro_init_stacks init_stacks 625# define coro_init_stacks(thx) init_stacks ()
587#else 626#else
588static void 627static void
589coro_init_stacks (pTHX) 628coro_init_stacks (pTHX)
590{ 629{
591 PL_curstackinfo = new_stackinfo(32, 8); 630 PL_curstackinfo = new_stackinfo(32, 8);
… …
654#if !PERL_VERSION_ATLEAST (5,10,0) 693#if !PERL_VERSION_ATLEAST (5,10,0)
655 Safefree (PL_retstack); 694 Safefree (PL_retstack);
656#endif 695#endif
657} 696}
658 697
698#define CORO_RSS \
699 rss += sizeof (SYM (curstackinfo)); \
700 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
702 rss += SYM (tmps_max) * sizeof (SV *); \
703 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
704 rss += SYM (scopestack_max) * sizeof (I32); \
705 rss += SYM (savestack_max) * sizeof (ANY);
706
659static size_t 707static size_t
660coro_rss (pTHX_ struct coro *coro) 708coro_rss (pTHX_ struct coro *coro)
661{ 709{
662 size_t rss = sizeof (*coro); 710 size_t rss = sizeof (*coro);
663 711
664 if (coro->mainstack) 712 if (coro->mainstack)
665 { 713 {
666 perl_slots tmp_slot;
667 perl_slots *slot;
668
669 if (coro->flags & CF_RUNNING) 714 if (coro->flags & CF_RUNNING)
670 { 715 {
671 slot = &tmp_slot; 716 #define SYM(sym) PL_ ## sym
672 717 CORO_RSS;
673 #define VAR(name,type) slot->name = PL_ ## name;
674 # include "state.h"
675 #undef VAR 718 #undef SYM
676 } 719 }
677 else 720 else
678 slot = coro->slot;
679
680 if (slot)
681 { 721 {
682 rss += sizeof (slot->curstackinfo); 722 #define SYM(sym) coro->slot->sym
683 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 723 CORO_RSS;
684 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 724 #undef SYM
685 rss += slot->tmps_max * sizeof (SV *);
686 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
687 rss += slot->scopestack_max * sizeof (I32);
688 rss += slot->savestack_max * sizeof (ANY);
689
690#if !PERL_VERSION_ATLEAST (5,10,0)
691 rss += slot->retstack_max * sizeof (OP *);
692#endif
693 } 725 }
694 } 726 }
695 727
696 return rss; 728 return rss;
697} 729}
… …
787 819
788 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 820 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
789} 821}
790 822
791static void 823static void
824prepare_nop (pTHX_ struct coro_transfer_args *ta)
825{
826 /* kind of mega-hacky, but works */
827 ta->next = ta->prev = (struct coro *)ta;
828}
829
830static int
831slf_check_nop (pTHX_ struct CoroSLF *frame)
832{
833 return 0;
834}
835
836static UNOP coro_setup_op;
837
838static void NOINLINE /* noinline to keep it out of the transfer fast path */
792coro_setup (pTHX_ struct coro *coro) 839coro_setup (pTHX_ struct coro *coro)
793{ 840{
794 /* 841 /*
795 * emulate part of the perl startup here. 842 * emulate part of the perl startup here.
796 */ 843 */
… …
820 PL_rs = newSVsv (GvSV (irsgv)); 867 PL_rs = newSVsv (GvSV (irsgv));
821 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
822 869
823 { 870 {
824 dSP; 871 dSP;
825 LOGOP myop; 872 UNOP myop;
826 873
827 Zero (&myop, 1, LOGOP); 874 Zero (&myop, 1, UNOP);
828 myop.op_next = Nullop; 875 myop.op_next = Nullop;
876 myop.op_type = OP_ENTERSUB;
829 myop.op_flags = OPf_WANT_VOID; 877 myop.op_flags = OPf_WANT_VOID;
830 878
831 PUSHMARK (SP); 879 PUSHMARK (SP);
832 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 880 PUSHs ((SV *)coro->startcv);
833 PUTBACK; 881 PUTBACK;
834 PL_op = (OP *)&myop; 882 PL_op = (OP *)&myop;
835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 883 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
836 SPAGAIN;
837 } 884 }
838 885
839 /* this newly created coroutine might be run on an existing cctx which most 886 /* this newly created coroutine might be run on an existing cctx which most
840 * likely was suspended in set_stacklevel, called from entersub. 887 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
841 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
842 * so we ENTER here for symmetry
843 */ 888 */
844 ENTER; 889 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
890 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
891
892 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
893 coro_setup_op.op_next = PL_op;
894 coro_setup_op.op_type = OP_CUSTOM;
895 coro_setup_op.op_ppaddr = pp_slf;
896 /* no flags etc. required, as an init function won't be called */
897
898 PL_op = (OP *)&coro_setup_op;
899
900 /* copy throw, in case it was set before coro_setup */
901 CORO_THROW = coro->except;
845} 902}
846 903
847static void 904static void
848coro_destruct (pTHX_ struct coro *coro) 905coro_destruct (pTHX_ struct coro *coro)
849{ 906{
… …
873 930
874 SvREFCNT_dec (PL_diehook); 931 SvREFCNT_dec (PL_diehook);
875 SvREFCNT_dec (PL_warnhook); 932 SvREFCNT_dec (PL_warnhook);
876 933
877 SvREFCNT_dec (coro->saved_deffh); 934 SvREFCNT_dec (coro->saved_deffh);
878 SvREFCNT_dec (coro->throw); 935 SvREFCNT_dec (coro->rouse_cb);
936 SvREFCNT_dec (coro->invoke_cb);
937 SvREFCNT_dec (coro->invoke_av);
879 938
880 coro_destruct_stacks (aTHX); 939 coro_destruct_stacks (aTHX);
881} 940}
882 941
883static void 942INLINE void
884free_coro_mortal (pTHX) 943free_coro_mortal (pTHX)
885{ 944{
886 if (expect_true (coro_mortal)) 945 if (expect_true (coro_mortal))
887 { 946 {
888 SvREFCNT_dec (coro_mortal); 947 SvREFCNT_dec (coro_mortal);
… …
893static int 952static int
894runops_trace (pTHX) 953runops_trace (pTHX)
895{ 954{
896 COP *oldcop = 0; 955 COP *oldcop = 0;
897 int oldcxix = -2; 956 int oldcxix = -2;
898 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 957 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
899 coro_cctx *cctx = coro->cctx; 958 coro_cctx *cctx = coro->cctx;
900 959
901 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 960 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
902 { 961 {
903 PERL_ASYNC_CHECK (); 962 PERL_ASYNC_CHECK ();
… …
970 SAVETMPS; 1029 SAVETMPS;
971 EXTEND (SP, 3); 1030 EXTEND (SP, 3);
972 PUSHMARK (SP); 1031 PUSHMARK (SP);
973 PUSHs (&PL_sv_yes); 1032 PUSHs (&PL_sv_yes);
974 PUSHs (fullname); 1033 PUSHs (fullname);
975 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1034 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
976 PUTBACK; 1035 PUTBACK;
977 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1036 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
978 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1037 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
979 SPAGAIN; 1038 SPAGAIN;
980 FREETMPS; 1039 FREETMPS;
… …
1012 1071
1013 TAINT_NOT; 1072 TAINT_NOT;
1014 return 0; 1073 return 0;
1015} 1074}
1016 1075
1017/* inject a fake call to Coro::State::_cctx_init into the execution */ 1076static struct coro_cctx *cctx_ssl_cctx;
1018/* _cctx_init should be careful, as it could be called at almost any time */ 1077static struct CoroSLF cctx_ssl_frame;
1019/* during execution of a perl program */ 1078
1079static void
1080slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1081{
1082 ta->prev = (struct coro *)cctx_ssl_cctx;
1083 ta->next = 0;
1084}
1085
1086static int
1087slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1088{
1089 *frame = cctx_ssl_frame;
1090
1091 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1092}
1093
1094/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1020static void NOINLINE 1095static void NOINLINE
1021cctx_prepare (pTHX_ coro_cctx *cctx) 1096cctx_prepare (pTHX_ coro_cctx *cctx)
1022{ 1097{
1023 dSP;
1024 LOGOP myop;
1025
1026 PL_top_env = &PL_start_env; 1098 PL_top_env = &PL_start_env;
1027 1099
1028 if (cctx->flags & CC_TRACE) 1100 if (cctx->flags & CC_TRACE)
1029 PL_runops = runops_trace; 1101 PL_runops = runops_trace;
1030 1102
1031 Zero (&myop, 1, LOGOP); 1103 /* we already must be executing an SLF op, there is no other valid way
1032 myop.op_next = PL_op; 1104 * that can lead to creation of a new cctx */
1033 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1105 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1106 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1034 1107
1035 PUSHMARK (SP); 1108 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1036 EXTEND (SP, 2); 1109 cctx_ssl_cctx = cctx;
1037 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1110 cctx_ssl_frame = slf_frame;
1038 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1111
1039 PUTBACK; 1112 slf_frame.prepare = slf_prepare_set_stacklevel;
1040 PL_op = (OP *)&myop; 1113 slf_frame.check = slf_check_set_stacklevel;
1041 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1114}
1042 SPAGAIN; 1115
1116/* the tail of transfer: execute stuff we can only do after a transfer */
1117INLINE void
1118transfer_tail (pTHX)
1119{
1120 free_coro_mortal (aTHX);
1043} 1121}
1044 1122
1045/* 1123/*
1046 * this is a _very_ stripped down perl interpreter ;) 1124 * this is a _very_ stripped down perl interpreter ;)
1047 */ 1125 */
1048static void 1126static void
1049cctx_run (void *arg) 1127cctx_run (void *arg)
1050{ 1128{
1129#ifdef USE_ITHREADS
1130# if CORO_PTHREAD
1131 PERL_SET_CONTEXT (coro_thx);
1132# endif
1133#endif
1134 {
1051 dTHX; 1135 dTHX;
1052 1136
1053 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1137 /* normally we would need to skip the entersub here */
1054 UNLOCK; 1138 /* not doing so will re-execute it, which is exactly what we want */
1055
1056 /* we now skip the entersub that lead to transfer() */
1057 PL_op = PL_op->op_next; 1139 /* PL_nop = PL_nop->op_next */
1058 1140
1059 /* inject a fake subroutine call to cctx_init */ 1141 /* inject a fake subroutine call to cctx_init */
1060 cctx_prepare (aTHX_ (coro_cctx *)arg); 1142 cctx_prepare (aTHX_ (coro_cctx *)arg);
1061 1143
1144 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX);
1146
1062 /* somebody or something will hit me for both perl_run and PL_restartop */ 1147 /* somebody or something will hit me for both perl_run and PL_restartop */
1063 PL_restartop = PL_op; 1148 PL_restartop = PL_op;
1064 perl_run (PL_curinterp); 1149 perl_run (PL_curinterp);
1065
1066 /* 1150 /*
1151 * Unfortunately, there is no way to get at the return values of the
1152 * coro body here, as perl_run destroys these
1153 */
1154
1155 /*
1067 * If perl-run returns we assume exit() was being called or the coro 1156 * If perl-run returns we assume exit() was being called or the coro
1068 * fell off the end, which seems to be the only valid (non-bug) 1157 * fell off the end, which seems to be the only valid (non-bug)
1069 * reason for perl_run to return. We try to exit by jumping to the 1158 * reason for perl_run to return. We try to exit by jumping to the
1070 * bootstrap-time "top" top_env, as we cannot restore the "main" 1159 * bootstrap-time "top" top_env, as we cannot restore the "main"
1071 * coroutine as Coro has no such concept 1160 * coroutine as Coro has no such concept
1072 */ 1161 */
1073 PL_top_env = main_top_env; 1162 PL_top_env = main_top_env;
1074 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1163 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1164 }
1075} 1165}
1076 1166
1077static coro_cctx * 1167static coro_cctx *
1078cctx_new () 1168cctx_new ()
1079{ 1169{
1080 coro_cctx *cctx; 1170 coro_cctx *cctx;
1171
1172 ++cctx_count;
1173 New (0, cctx, 1, coro_cctx);
1174
1175 cctx->gen = cctx_gen;
1176 cctx->flags = 0;
1177 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1178
1179 return cctx;
1180}
1181
1182/* create a new cctx only suitable as source */
1183static coro_cctx *
1184cctx_new_empty ()
1185{
1186 coro_cctx *cctx = cctx_new ();
1187
1188 cctx->sptr = 0;
1189 coro_create (&cctx->cctx, 0, 0, 0, 0);
1190
1191 return cctx;
1192}
1193
1194/* create a new cctx suitable as destination/running a perl interpreter */
1195static coro_cctx *
1196cctx_new_run ()
1197{
1198 coro_cctx *cctx = cctx_new ();
1081 void *stack_start; 1199 void *stack_start;
1082 size_t stack_size; 1200 size_t stack_size;
1083 1201
1084 ++cctx_count;
1085 Newz (0, cctx, 1, coro_cctx);
1086
1087#if HAVE_MMAP 1202#if HAVE_MMAP
1088 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1203 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1089 /* mmap supposedly does allocate-on-write for us */ 1204 /* mmap supposedly does allocate-on-write for us */
1090 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1205 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1091 1206
1092 if (cctx->sptr != (void *)-1) 1207 if (cctx->sptr != (void *)-1)
1093 { 1208 {
1094# if CORO_STACKGUARD 1209 #if CORO_STACKGUARD
1095 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1210 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1096# endif 1211 #endif
1097 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1212 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1098 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1213 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1099 cctx->flags |= CC_MAPPED; 1214 cctx->flags |= CC_MAPPED;
1100 } 1215 }
1101 else 1216 else
1102#endif 1217#endif
1103 { 1218 {
1104 cctx->ssize = coro_stacksize * (long)sizeof (long); 1219 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1105 New (0, cctx->sptr, coro_stacksize, long); 1220 New (0, cctx->sptr, cctx_stacksize, long);
1106 1221
1107 if (!cctx->sptr) 1222 if (!cctx->sptr)
1108 { 1223 {
1109 perror ("FATAL: unable to allocate stack for coroutine"); 1224 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1110 _exit (EXIT_FAILURE); 1225 _exit (EXIT_FAILURE);
1111 } 1226 }
1112 1227
1113 stack_start = cctx->sptr; 1228 stack_start = cctx->sptr;
1114 stack_size = cctx->ssize; 1229 stack_size = cctx->ssize;
1115 } 1230 }
1116 1231
1117 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1232 #if CORO_USE_VALGRIND
1233 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1234 #endif
1235
1118 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1236 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1119 1237
1120 return cctx; 1238 return cctx;
1121} 1239}
1122 1240
… …
1130 coro_destroy (&cctx->cctx); 1248 coro_destroy (&cctx->cctx);
1131 1249
1132 /* coro_transfer creates new, empty cctx's */ 1250 /* coro_transfer creates new, empty cctx's */
1133 if (cctx->sptr) 1251 if (cctx->sptr)
1134 { 1252 {
1135#if CORO_USE_VALGRIND 1253 #if CORO_USE_VALGRIND
1136 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1254 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1137#endif 1255 #endif
1138 1256
1139#if HAVE_MMAP 1257#if HAVE_MMAP
1140 if (cctx->flags & CC_MAPPED) 1258 if (cctx->flags & CC_MAPPED)
1141 munmap (cctx->sptr, cctx->ssize); 1259 munmap (cctx->sptr, cctx->ssize);
1142 else 1260 else
… …
1146 1264
1147 Safefree (cctx); 1265 Safefree (cctx);
1148} 1266}
1149 1267
1150/* wether this cctx should be destructed */ 1268/* wether this cctx should be destructed */
1151#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1269#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1152 1270
1153static coro_cctx * 1271static coro_cctx *
1154cctx_get (pTHX) 1272cctx_get (pTHX)
1155{ 1273{
1156 while (expect_true (cctx_first)) 1274 while (expect_true (cctx_first))
… …
1163 return cctx; 1281 return cctx;
1164 1282
1165 cctx_destroy (cctx); 1283 cctx_destroy (cctx);
1166 } 1284 }
1167 1285
1168 return cctx_new (); 1286 return cctx_new_run ();
1169} 1287}
1170 1288
1171static void 1289static void
1172cctx_put (coro_cctx *cctx) 1290cctx_put (coro_cctx *cctx)
1173{ 1291{
1174 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1292 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1175 1293
1176 /* free another cctx if overlimit */ 1294 /* free another cctx if overlimit */
1177 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1295 if (expect_false (cctx_idle >= cctx_max_idle))
1178 { 1296 {
1179 coro_cctx *first = cctx_first; 1297 coro_cctx *first = cctx_first;
1180 cctx_first = first->next; 1298 cctx_first = first->next;
1181 --cctx_idle; 1299 --cctx_idle;
1182 1300
… …
1191/** coroutine switching *****************************************************/ 1309/** coroutine switching *****************************************************/
1192 1310
1193static void 1311static void
1194transfer_check (pTHX_ struct coro *prev, struct coro *next) 1312transfer_check (pTHX_ struct coro *prev, struct coro *next)
1195{ 1313{
1314 /* TODO: throwing up here is considered harmful */
1315
1196 if (expect_true (prev != next)) 1316 if (expect_true (prev != next))
1197 { 1317 {
1198 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1318 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1199 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1319 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1200 1320
1201 if (expect_false (next->flags & CF_RUNNING)) 1321 if (expect_false (next->flags & CF_RUNNING))
1202 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1322 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1203 1323
1204 if (expect_false (next->flags & CF_DESTROYED)) 1324 if (expect_false (next->flags & CF_DESTROYED))
1205 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1325 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1206 1326
1207#if !PERL_VERSION_ATLEAST (5,10,0) 1327#if !PERL_VERSION_ATLEAST (5,10,0)
1208 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1328 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1209 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1329 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1210#endif 1330#endif
1211 } 1331 }
1212} 1332}
1213 1333
1214/* always use the TRANSFER macro */ 1334/* always use the TRANSFER macro */
1215static void NOINLINE 1335static void NOINLINE /* noinline so we have a fixed stackframe */
1216transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1336transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1217{ 1337{
1218 dSTACKLEVEL; 1338 dSTACKLEVEL;
1219 1339
1220 /* sometimes transfer is only called to set idle_sp */ 1340 /* sometimes transfer is only called to set idle_sp */
… …
1223 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1343 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1224 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1344 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1225 } 1345 }
1226 else if (expect_true (prev != next)) 1346 else if (expect_true (prev != next))
1227 { 1347 {
1228 static volatile int has_throw;
1229 coro_cctx *prev__cctx; 1348 coro_cctx *prev__cctx;
1230 1349
1231 if (expect_false (prev->flags & CF_NEW)) 1350 if (expect_false (prev->flags & CF_NEW))
1232 { 1351 {
1233 /* create a new empty/source context */ 1352 /* create a new empty/source context */
1234 ++cctx_count; 1353 prev->cctx = cctx_new_empty ();
1235 New (0, prev->cctx, 1, coro_cctx);
1236 prev->cctx->sptr = 0;
1237 coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
1238
1239 prev->flags &= ~CF_NEW; 1354 prev->flags &= ~CF_NEW;
1240 prev->flags |= CF_RUNNING; 1355 prev->flags |= CF_RUNNING;
1241 } 1356 }
1242 1357
1243 prev->flags &= ~CF_RUNNING; 1358 prev->flags &= ~CF_RUNNING;
1244 next->flags |= CF_RUNNING; 1359 next->flags |= CF_RUNNING;
1245
1246 LOCK;
1247 1360
1248 /* first get rid of the old state */ 1361 /* first get rid of the old state */
1249 save_perl (aTHX_ prev); 1362 save_perl (aTHX_ prev);
1250 1363
1251 if (expect_false (next->flags & CF_NEW)) 1364 if (expect_false (next->flags & CF_NEW))
… …
1258 else 1371 else
1259 load_perl (aTHX_ next); 1372 load_perl (aTHX_ next);
1260 1373
1261 prev__cctx = prev->cctx; 1374 prev__cctx = prev->cctx;
1262 1375
1263 /* possibly "free" the cctx */ 1376 /* possibly untie and reuse the cctx */
1264 if (expect_true ( 1377 if (expect_true (
1265 prev__cctx->idle_sp == STACKLEVEL 1378 prev__cctx->idle_sp == STACKLEVEL
1266 && !(prev__cctx->flags & CC_TRACE) 1379 && !(prev__cctx->flags & CC_TRACE)
1267 && !force_cctx 1380 && !force_cctx
1268 )) 1381 ))
1269 { 1382 {
1270 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1383 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1271 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1384 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1272 1385
1273 prev->cctx = 0; 1386 prev->cctx = 0;
1274 1387
1275 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1388 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1276 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1389 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1283 1396
1284 ++next->usecount; 1397 ++next->usecount;
1285 1398
1286 if (expect_true (!next->cctx)) 1399 if (expect_true (!next->cctx))
1287 next->cctx = cctx_get (aTHX); 1400 next->cctx = cctx_get (aTHX);
1288
1289 has_throw = !!next->throw;
1290 1401
1291 if (expect_false (prev__cctx != next->cctx)) 1402 if (expect_false (prev__cctx != next->cctx))
1292 { 1403 {
1293 prev__cctx->top_env = PL_top_env; 1404 prev__cctx->top_env = PL_top_env;
1294 PL_top_env = next->cctx->top_env; 1405 PL_top_env = next->cctx->top_env;
1295 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1406 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1296 } 1407 }
1297 1408
1298 free_coro_mortal (aTHX); 1409 transfer_tail (aTHX);
1299 UNLOCK;
1300
1301 if (expect_false (has_throw))
1302 {
1303 struct coro *coro = SvSTATE (coro_current);
1304
1305 if (coro->throw)
1306 {
1307 SV *exception = coro->throw;
1308 coro->throw = 0;
1309 sv_setsv (ERRSV, exception);
1310 croak (0);
1311 }
1312 }
1313 } 1410 }
1314} 1411}
1315
1316struct transfer_args
1317{
1318 struct coro *prev, *next;
1319};
1320 1412
1321#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1413#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1322#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1414#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1323 1415
1324/** high level stuff ********************************************************/ 1416/** high level stuff ********************************************************/
… …
1326static int 1418static int
1327coro_state_destroy (pTHX_ struct coro *coro) 1419coro_state_destroy (pTHX_ struct coro *coro)
1328{ 1420{
1329 if (coro->flags & CF_DESTROYED) 1421 if (coro->flags & CF_DESTROYED)
1330 return 0; 1422 return 0;
1423
1424 if (coro->on_destroy)
1425 coro->on_destroy (aTHX_ coro);
1331 1426
1332 coro->flags |= CF_DESTROYED; 1427 coro->flags |= CF_DESTROYED;
1333 1428
1334 if (coro->flags & CF_READY) 1429 if (coro->flags & CF_READY)
1335 { 1430 {
1336 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1431 /* reduce nready, as destroying a ready coro effectively unreadies it */
1337 /* alternative: look through all ready queues and remove the coro */ 1432 /* alternative: look through all ready queues and remove the coro */
1338 LOCK;
1339 --coro_nready; 1433 --coro_nready;
1340 UNLOCK;
1341 } 1434 }
1342 else 1435 else
1343 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1436 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1344 1437
1345 if (coro->mainstack && coro->mainstack != main_mainstack) 1438 if (coro->mainstack && coro->mainstack != main_mainstack)
1346 { 1439 {
1347 struct coro temp; 1440 struct coro temp;
1348 1441
1349 if (coro->flags & CF_RUNNING) 1442 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1350 croak ("FATAL: tried to destroy currently running coroutine");
1351 1443
1352 save_perl (aTHX_ &temp); 1444 save_perl (aTHX_ &temp);
1353 load_perl (aTHX_ coro); 1445 load_perl (aTHX_ coro);
1354 1446
1355 coro_destruct (aTHX_ coro); 1447 coro_destruct (aTHX_ coro);
… …
1358 1450
1359 coro->slot = 0; 1451 coro->slot = 0;
1360 } 1452 }
1361 1453
1362 cctx_destroy (coro->cctx); 1454 cctx_destroy (coro->cctx);
1455 SvREFCNT_dec (coro->startcv);
1363 SvREFCNT_dec (coro->args); 1456 SvREFCNT_dec (coro->args);
1457 SvREFCNT_dec (CORO_THROW);
1364 1458
1365 if (coro->next) coro->next->prev = coro->prev; 1459 if (coro->next) coro->next->prev = coro->prev;
1366 if (coro->prev) coro->prev->next = coro->next; 1460 if (coro->prev) coro->prev->next = coro->next;
1367 if (coro == coro_first) coro_first = coro->next; 1461 if (coro == coro_first) coro_first = coro->next;
1368 1462
… …
1406# define MGf_DUP 0 1500# define MGf_DUP 0
1407#endif 1501#endif
1408}; 1502};
1409 1503
1410static void 1504static void
1411prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1505prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1412{ 1506{
1413 ta->prev = SvSTATE (prev_sv); 1507 ta->prev = SvSTATE (prev_sv);
1414 ta->next = SvSTATE (next_sv); 1508 ta->next = SvSTATE (next_sv);
1415 TRANSFER_CHECK (*ta); 1509 TRANSFER_CHECK (*ta);
1416} 1510}
1417 1511
1418static void 1512static void
1419api_transfer (SV *prev_sv, SV *next_sv) 1513api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1420{ 1514{
1421 dTHX;
1422 struct transfer_args ta; 1515 struct coro_transfer_args ta;
1423 1516
1424 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1517 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1425 TRANSFER (ta, 1); 1518 TRANSFER (ta, 1);
1426} 1519}
1427 1520
1521/*****************************************************************************/
1522/* gensub: simple closure generation utility */
1523
1524#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1525
1526/* create a closure from XS, returns a code reference */
1527/* the arg can be accessed via GENSUB_ARG from the callback */
1528/* the callback must use dXSARGS/XSRETURN */
1529static SV *
1530gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1531{
1532 CV *cv = (CV *)newSV (0);
1533
1534 sv_upgrade ((SV *)cv, SVt_PVCV);
1535
1536 CvANON_on (cv);
1537 CvISXSUB_on (cv);
1538 CvXSUB (cv) = xsub;
1539 GENSUB_ARG = arg;
1540
1541 return newRV_noinc ((SV *)cv);
1542}
1543
1428/** Coro ********************************************************************/ 1544/** Coro ********************************************************************/
1429 1545
1430static void 1546INLINE void
1431coro_enq (pTHX_ SV *coro_sv) 1547coro_enq (pTHX_ struct coro *coro)
1432{ 1548{
1433 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1549 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1434} 1550}
1435 1551
1436static SV * 1552INLINE SV *
1437coro_deq (pTHX) 1553coro_deq (pTHX)
1438{ 1554{
1439 int prio; 1555 int prio;
1440 1556
1441 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1557 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1444 1560
1445 return 0; 1561 return 0;
1446} 1562}
1447 1563
1448static int 1564static int
1449api_ready (SV *coro_sv) 1565api_ready (pTHX_ SV *coro_sv)
1450{ 1566{
1451 dTHX;
1452 struct coro *coro; 1567 struct coro *coro;
1453 SV *sv_hook; 1568 SV *sv_hook;
1454 void (*xs_hook)(void); 1569 void (*xs_hook)(void);
1455 1570
1456 if (SvROK (coro_sv)) 1571 if (SvROK (coro_sv))
… …
1461 if (coro->flags & CF_READY) 1576 if (coro->flags & CF_READY)
1462 return 0; 1577 return 0;
1463 1578
1464 coro->flags |= CF_READY; 1579 coro->flags |= CF_READY;
1465 1580
1466 LOCK;
1467
1468 sv_hook = coro_nready ? 0 : coro_readyhook; 1581 sv_hook = coro_nready ? 0 : coro_readyhook;
1469 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1582 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1470 1583
1471 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1584 coro_enq (aTHX_ coro);
1472 ++coro_nready; 1585 ++coro_nready;
1473 1586
1474 UNLOCK;
1475
1476 if (sv_hook) 1587 if (sv_hook)
1477 { 1588 {
1478 dSP; 1589 dSP;
1479 1590
1480 ENTER; 1591 ENTER;
1481 SAVETMPS; 1592 SAVETMPS;
1482 1593
1483 PUSHMARK (SP); 1594 PUSHMARK (SP);
1484 PUTBACK; 1595 PUTBACK;
1485 call_sv (sv_hook, G_DISCARD); 1596 call_sv (sv_hook, G_VOID | G_DISCARD);
1486 SPAGAIN;
1487 1597
1488 FREETMPS; 1598 FREETMPS;
1489 LEAVE; 1599 LEAVE;
1490 } 1600 }
1491 1601
… …
1494 1604
1495 return 1; 1605 return 1;
1496} 1606}
1497 1607
1498static int 1608static int
1499api_is_ready (SV *coro_sv) 1609api_is_ready (pTHX_ SV *coro_sv)
1500{ 1610{
1501 dTHX;
1502 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1611 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1503} 1612}
1504 1613
1505static void 1614INLINE void
1506prepare_schedule (pTHX_ struct transfer_args *ta) 1615prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1507{ 1616{
1508 SV *prev_sv, *next_sv; 1617 SV *prev_sv, *next_sv;
1509 1618
1510 for (;;) 1619 for (;;)
1511 { 1620 {
1512 LOCK;
1513 next_sv = coro_deq (aTHX); 1621 next_sv = coro_deq (aTHX);
1514 1622
1515 /* nothing to schedule: call the idle handler */ 1623 /* nothing to schedule: call the idle handler */
1516 if (expect_false (!next_sv)) 1624 if (expect_false (!next_sv))
1517 { 1625 {
1518 dSP; 1626 dSP;
1519 UNLOCK;
1520 1627
1521 ENTER; 1628 ENTER;
1522 SAVETMPS; 1629 SAVETMPS;
1523 1630
1524 PUSHMARK (SP); 1631 PUSHMARK (SP);
1525 PUTBACK; 1632 PUTBACK;
1526 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1633 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1527 SPAGAIN;
1528 1634
1529 FREETMPS; 1635 FREETMPS;
1530 LEAVE; 1636 LEAVE;
1531 continue; 1637 continue;
1532 } 1638 }
1533 1639
1534 ta->next = SvSTATE (next_sv); 1640 ta->next = SvSTATE_hv (next_sv);
1535 1641
1536 /* cannot transfer to destroyed coros, skip and look for next */ 1642 /* cannot transfer to destroyed coros, skip and look for next */
1537 if (expect_false (ta->next->flags & CF_DESTROYED)) 1643 if (expect_false (ta->next->flags & CF_DESTROYED))
1538 { 1644 {
1539 UNLOCK;
1540 SvREFCNT_dec (next_sv); 1645 SvREFCNT_dec (next_sv);
1541 /* coro_nready is already taken care of by destroy */ 1646 /* coro_nready has already been taken care of by destroy */
1542 continue; 1647 continue;
1543 } 1648 }
1544 1649
1545 --coro_nready; 1650 --coro_nready;
1546 UNLOCK;
1547 break; 1651 break;
1548 } 1652 }
1549 1653
1550 /* free this only after the transfer */ 1654 /* free this only after the transfer */
1551 prev_sv = SvRV (coro_current); 1655 prev_sv = SvRV (coro_current);
1552 ta->prev = SvSTATE (prev_sv); 1656 ta->prev = SvSTATE_hv (prev_sv);
1553 TRANSFER_CHECK (*ta); 1657 TRANSFER_CHECK (*ta);
1554 assert (ta->next->flags & CF_READY); 1658 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1555 ta->next->flags &= ~CF_READY; 1659 ta->next->flags &= ~CF_READY;
1556 SvRV_set (coro_current, next_sv); 1660 SvRV_set (coro_current, next_sv);
1557 1661
1558 LOCK;
1559 free_coro_mortal (aTHX); 1662 free_coro_mortal (aTHX);
1560 coro_mortal = prev_sv; 1663 coro_mortal = prev_sv;
1561 UNLOCK;
1562} 1664}
1563 1665
1564static void 1666INLINE void
1565prepare_cede (pTHX_ struct transfer_args *ta) 1667prepare_cede (pTHX_ struct coro_transfer_args *ta)
1566{ 1668{
1567 api_ready (coro_current); 1669 api_ready (aTHX_ coro_current);
1568 prepare_schedule (aTHX_ ta); 1670 prepare_schedule (aTHX_ ta);
1569} 1671}
1570 1672
1673INLINE void
1674prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1675{
1676 SV *prev = SvRV (coro_current);
1677
1678 if (coro_nready)
1679 {
1680 prepare_schedule (aTHX_ ta);
1681 api_ready (aTHX_ prev);
1682 }
1683 else
1684 prepare_nop (aTHX_ ta);
1685}
1686
1687static void
1688api_schedule (pTHX)
1689{
1690 struct coro_transfer_args ta;
1691
1692 prepare_schedule (aTHX_ &ta);
1693 TRANSFER (ta, 1);
1694}
1695
1571static int 1696static int
1572prepare_cede_notself (pTHX_ struct transfer_args *ta) 1697api_cede (pTHX)
1573{ 1698{
1574 if (coro_nready) 1699 struct coro_transfer_args ta;
1575 { 1700
1576 SV *prev = SvRV (coro_current);
1577 prepare_schedule (aTHX_ ta); 1701 prepare_cede (aTHX_ &ta);
1578 api_ready (prev); 1702
1703 if (expect_true (ta.prev != ta.next))
1704 {
1705 TRANSFER (ta, 1);
1579 return 1; 1706 return 1;
1580 } 1707 }
1581 else 1708 else
1582 return 0; 1709 return 0;
1583} 1710}
1584 1711
1585static void
1586api_schedule (void)
1587{
1588 dTHX;
1589 struct transfer_args ta;
1590
1591 prepare_schedule (aTHX_ &ta);
1592 TRANSFER (ta, 1);
1593}
1594
1595static int 1712static int
1596api_cede (void) 1713api_cede_notself (pTHX)
1597{ 1714{
1598 dTHX; 1715 if (coro_nready)
1716 {
1599 struct transfer_args ta; 1717 struct coro_transfer_args ta;
1600 1718
1601 prepare_cede (aTHX_ &ta); 1719 prepare_cede_notself (aTHX_ &ta);
1602
1603 if (expect_true (ta.prev != ta.next))
1604 {
1605 TRANSFER (ta, 1); 1720 TRANSFER (ta, 1);
1606 return 1; 1721 return 1;
1607 } 1722 }
1608 else 1723 else
1609 return 0; 1724 return 0;
1610} 1725}
1611 1726
1612static int 1727static void
1613api_cede_notself (void)
1614{
1615 dTHX;
1616 struct transfer_args ta;
1617
1618 if (prepare_cede_notself (aTHX_ &ta))
1619 {
1620 TRANSFER (ta, 1);
1621 return 1;
1622 }
1623 else
1624 return 0;
1625}
1626
1627static void
1628api_trace (SV *coro_sv, int flags) 1728api_trace (pTHX_ SV *coro_sv, int flags)
1629{ 1729{
1630 dTHX;
1631 struct coro *coro = SvSTATE (coro_sv); 1730 struct coro *coro = SvSTATE (coro_sv);
1632 1731
1633 if (flags & CC_TRACE) 1732 if (flags & CC_TRACE)
1634 { 1733 {
1635 if (!coro->cctx) 1734 if (!coro->cctx)
1636 coro->cctx = cctx_new (); 1735 coro->cctx = cctx_new_run ();
1637 else if (!(coro->cctx->flags & CC_TRACE)) 1736 else if (!(coro->cctx->flags & CC_TRACE))
1638 croak ("cannot enable tracing on coroutine with custom stack"); 1737 croak ("cannot enable tracing on coroutine with custom stack,");
1639 1738
1640 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1739 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1641 } 1740 }
1642 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1741 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1643 { 1742 {
… …
1648 else 1747 else
1649 coro->slot->runops = RUNOPS_DEFAULT; 1748 coro->slot->runops = RUNOPS_DEFAULT;
1650 } 1749 }
1651} 1750}
1652 1751
1752/*****************************************************************************/
1753/* async pool handler */
1754
1653static int 1755static int
1654coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1756slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1655{ 1757{
1656 AV *padlist; 1758 HV *hv = (HV *)SvRV (coro_current);
1657 AV *av = (AV *)mg->mg_obj; 1759 struct coro *coro = (struct coro *)frame->data;
1658 1760
1659 abort (); 1761 if (!coro->invoke_cb)
1762 return 1; /* loop till we have invoke */
1763 else
1764 {
1765 int i, len;
1766
1767 hv_store (hv, "desc", sizeof ("desc") - 1,
1768 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1769
1770 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1771
1772 len = av_len (coro->invoke_av);
1773
1774 {
1775 dSP;
1776 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1777 PUTBACK;
1778 }
1779
1780 SvREFCNT_dec (GvAV (PL_defgv));
1781 GvAV (PL_defgv) = coro->invoke_av;
1782 coro->invoke_av = 0;
1783
1784 return 0;
1785 }
1786}
1787
1788static void
1789slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1790{
1791 HV *hv = (HV *)SvRV (coro_current);
1792 struct coro *coro = SvSTATE_hv ((SV *)hv);
1793
1794 if (expect_true (coro->saved_deffh))
1795 {
1796 /* subsequent iteration */
1797 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1798 coro->saved_deffh = 0;
1799
1800 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1801 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1802 {
1803 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1804 coro->invoke_av = newAV ();
1805
1806 frame->prepare = prepare_nop;
1807 }
1808 else
1809 {
1810 av_clear (GvAV (PL_defgv));
1811 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1812
1813 coro->prio = 0;
1814
1815 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1816 api_trace (aTHX_ coro_current, 0);
1817
1818 frame->prepare = prepare_schedule;
1819 av_push (av_async_pool, SvREFCNT_inc (hv));
1820 }
1821 }
1822 else
1823 {
1824 /* first iteration, simply fall through */
1825 frame->prepare = prepare_nop;
1826 }
1827
1828 frame->check = slf_check_pool_handler;
1829 frame->data = (void *)coro;
1830}
1831
1832/*****************************************************************************/
1833/* rouse callback */
1834
1835#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1836
1837static void
1838coro_rouse_callback (pTHX_ CV *cv)
1839{
1840 dXSARGS;
1841 SV *data = (SV *)GENSUB_ARG;
1842
1843 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1844 {
1845 /* first call, set args */
1846 int i;
1847 AV *av = newAV ();
1848 SV *coro = SvRV (data);
1849
1850 SvRV_set (data, (SV *)av);
1851 api_ready (aTHX_ coro);
1852 SvREFCNT_dec (coro);
1853
1854 /* better take a full copy of the arguments */
1855 while (items--)
1856 av_store (av, items, newSVsv (ST (items)));
1857 }
1858
1859 XSRETURN_EMPTY;
1860}
1861
1862static int
1863slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1864{
1865 SV *data = (SV *)frame->data;
1866
1867 if (CORO_THROW)
1868 return 0;
1869
1870 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1871 return 1;
1872
1873 /* now push all results on the stack */
1874 {
1875 dSP;
1876 AV *av = (AV *)SvRV (data);
1877 int i;
1878
1879 EXTEND (SP, AvFILLp (av) + 1);
1880 for (i = 0; i <= AvFILLp (av); ++i)
1881 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1882
1883 /* we have stolen the elements, so ste length to zero and free */
1884 AvFILLp (av) = -1;
1885 av_undef (av);
1886
1887 PUTBACK;
1888 }
1660 1889
1661 return 0; 1890 return 0;
1662} 1891}
1663 1892
1664static MGVTBL coro_gensub_vtbl = { 1893static void
1665 0, 0, 0, 0, 1894slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1666 coro_gensub_free 1895{
1667}; 1896 SV *cb;
1897
1898 if (items)
1899 cb = arg [0];
1900 else
1901 {
1902 struct coro *coro = SvSTATE_current;
1903
1904 if (!coro->rouse_cb)
1905 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1906
1907 cb = sv_2mortal (coro->rouse_cb);
1908 coro->rouse_cb = 0;
1909 }
1910
1911 if (!SvROK (cb)
1912 || SvTYPE (SvRV (cb)) != SVt_PVCV
1913 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1914 croak ("Coro::rouse_wait called with illegal callback argument,");
1915
1916 {
1917 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1918 SV *data = (SV *)GENSUB_ARG;
1919
1920 frame->data = (void *)data;
1921 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1922 frame->check = slf_check_rouse_wait;
1923 }
1924}
1925
1926static SV *
1927coro_new_rouse_cb (pTHX)
1928{
1929 HV *hv = (HV *)SvRV (coro_current);
1930 struct coro *coro = SvSTATE_hv (hv);
1931 SV *data = newRV_inc ((SV *)hv);
1932 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1933
1934 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1935 SvREFCNT_dec (data); /* magicext increases the refcount */
1936
1937 SvREFCNT_dec (coro->rouse_cb);
1938 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1939
1940 return cb;
1941}
1942
1943/*****************************************************************************/
1944/* schedule-like-function opcode (SLF) */
1945
1946static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1947static const CV *slf_cv;
1948static SV **slf_argv;
1949static int slf_argc, slf_arga; /* count, allocated */
1950static I32 slf_ax; /* top of stack, for restore */
1951
1952/* this restores the stack in the case we patched the entersub, to */
1953/* recreate the stack frame as perl will on following calls */
1954/* since entersub cleared the stack */
1955static OP *
1956pp_restore (pTHX)
1957{
1958 int i;
1959 SV **SP = PL_stack_base + slf_ax;
1960
1961 PUSHMARK (SP);
1962
1963 EXTEND (SP, slf_argc + 1);
1964
1965 for (i = 0; i < slf_argc; ++i)
1966 PUSHs (sv_2mortal (slf_argv [i]));
1967
1968 PUSHs ((SV *)CvGV (slf_cv));
1969
1970 RETURNOP (slf_restore.op_first);
1971}
1972
1973static void
1974slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1975{
1976 SV **arg = (SV **)slf_frame.data;
1977
1978 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1979}
1980
1981static void
1982slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1983{
1984 if (items != 2)
1985 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1986
1987 frame->prepare = slf_prepare_transfer;
1988 frame->check = slf_check_nop;
1989 frame->data = (void *)arg; /* let's hope it will stay valid */
1990}
1991
1992static void
1993slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1994{
1995 frame->prepare = prepare_schedule;
1996 frame->check = slf_check_nop;
1997}
1998
1999static void
2000slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2001{
2002 frame->prepare = prepare_cede;
2003 frame->check = slf_check_nop;
2004}
2005
2006static void
2007slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2008{
2009 frame->prepare = prepare_cede_notself;
2010 frame->check = slf_check_nop;
2011}
2012
2013/*
2014 * these not obviously related functions are all rolled into one
2015 * function to increase chances that they all will call transfer with the same
2016 * stack offset
2017 * SLF stands for "schedule-like-function".
2018 */
2019static OP *
2020pp_slf (pTHX)
2021{
2022 I32 checkmark; /* mark SP to see how many elements check has pushed */
2023
2024 /* set up the slf frame, unless it has already been set-up */
2025 /* the latter happens when a new coro has been started */
2026 /* or when a new cctx was attached to an existing coroutine */
2027 if (expect_true (!slf_frame.prepare))
2028 {
2029 /* first iteration */
2030 dSP;
2031 SV **arg = PL_stack_base + TOPMARK + 1;
2032 int items = SP - arg; /* args without function object */
2033 SV *gv = *sp;
2034
2035 /* do a quick consistency check on the "function" object, and if it isn't */
2036 /* for us, divert to the real entersub */
2037 if (SvTYPE (gv) != SVt_PVGV
2038 || !GvCV (gv)
2039 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2040 return PL_ppaddr[OP_ENTERSUB](aTHX);
2041
2042 if (!(PL_op->op_flags & OPf_STACKED))
2043 {
2044 /* ampersand-form of call, use @_ instead of stack */
2045 AV *av = GvAV (PL_defgv);
2046 arg = AvARRAY (av);
2047 items = AvFILLp (av) + 1;
2048 }
2049
2050 /* now call the init function, which needs to set up slf_frame */
2051 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2052 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2053
2054 /* pop args */
2055 SP = PL_stack_base + POPMARK;
2056
2057 PUTBACK;
2058 }
2059
2060 /* now that we have a slf_frame, interpret it! */
2061 /* we use a callback system not to make the code needlessly */
2062 /* complicated, but so we can run multiple perl coros from one cctx */
2063
2064 do
2065 {
2066 struct coro_transfer_args ta;
2067
2068 slf_frame.prepare (aTHX_ &ta);
2069 TRANSFER (ta, 0);
2070
2071 checkmark = PL_stack_sp - PL_stack_base;
2072 }
2073 while (slf_frame.check (aTHX_ &slf_frame));
2074
2075 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2076
2077 /* exception handling */
2078 if (expect_false (CORO_THROW))
2079 {
2080 SV *exception = sv_2mortal (CORO_THROW);
2081
2082 CORO_THROW = 0;
2083 sv_setsv (ERRSV, exception);
2084 croak (0);
2085 }
2086
2087 /* return value handling - mostly like entersub */
2088 /* make sure we put something on the stack in scalar context */
2089 if (GIMME_V == G_SCALAR)
2090 {
2091 dSP;
2092 SV **bot = PL_stack_base + checkmark;
2093
2094 if (sp == bot) /* too few, push undef */
2095 bot [1] = &PL_sv_undef;
2096 else if (sp != bot + 1) /* too many, take last one */
2097 bot [1] = *sp;
2098
2099 SP = bot + 1;
2100
2101 PUTBACK;
2102 }
2103
2104 return NORMAL;
2105}
2106
2107static void
2108api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2109{
2110 int i;
2111 SV **arg = PL_stack_base + ax;
2112 int items = PL_stack_sp - arg + 1;
2113
2114 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2115
2116 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2117 && PL_op->op_ppaddr != pp_slf)
2118 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2119
2120 CvFLAGS (cv) |= CVf_SLF;
2121 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2122 slf_cv = cv;
2123
2124 /* we patch the op, and then re-run the whole call */
2125 /* we have to put the same argument on the stack for this to work */
2126 /* and this will be done by pp_restore */
2127 slf_restore.op_next = (OP *)&slf_restore;
2128 slf_restore.op_type = OP_CUSTOM;
2129 slf_restore.op_ppaddr = pp_restore;
2130 slf_restore.op_first = PL_op;
2131
2132 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2133
2134 if (PL_op->op_flags & OPf_STACKED)
2135 {
2136 if (items > slf_arga)
2137 {
2138 slf_arga = items;
2139 free (slf_argv);
2140 slf_argv = malloc (slf_arga * sizeof (SV *));
2141 }
2142
2143 slf_argc = items;
2144
2145 for (i = 0; i < items; ++i)
2146 slf_argv [i] = SvREFCNT_inc (arg [i]);
2147 }
2148 else
2149 slf_argc = 0;
2150
2151 PL_op->op_ppaddr = pp_slf;
2152 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2153
2154 PL_op = (OP *)&slf_restore;
2155}
1668 2156
1669/*****************************************************************************/ 2157/*****************************************************************************/
1670/* PerlIO::cede */ 2158/* PerlIO::cede */
1671 2159
1672typedef struct 2160typedef struct
… …
1700 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2188 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1701 double now = nvtime (); 2189 double now = nvtime ();
1702 2190
1703 if (now >= self->next) 2191 if (now >= self->next)
1704 { 2192 {
1705 api_cede (); 2193 api_cede (aTHX);
1706 self->next = now + self->every; 2194 self->next = now + self->every;
1707 } 2195 }
1708 2196
1709 return PerlIOBuf_flush (aTHX_ f); 2197 return PerlIOBuf_flush (aTHX_ f);
1710} 2198}
… …
1739 PerlIOBuf_get_ptr, 2227 PerlIOBuf_get_ptr,
1740 PerlIOBuf_get_cnt, 2228 PerlIOBuf_get_cnt,
1741 PerlIOBuf_set_ptrcnt, 2229 PerlIOBuf_set_ptrcnt,
1742}; 2230};
1743 2231
2232/*****************************************************************************/
2233/* Coro::Semaphore & Coro::Signal */
2234
2235static SV *
2236coro_waitarray_new (pTHX_ int count)
2237{
2238 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2239 AV *av = newAV ();
2240 SV **ary;
2241
2242 /* unfortunately, building manually saves memory */
2243 Newx (ary, 2, SV *);
2244 AvALLOC (av) = ary;
2245 /*AvARRAY (av) = ary;*/
2246 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2247 AvMAX (av) = 1;
2248 AvFILLp (av) = 0;
2249 ary [0] = newSViv (count);
2250
2251 return newRV_noinc ((SV *)av);
2252}
2253
2254/* semaphore */
2255
2256static void
2257coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2258{
2259 SV *count_sv = AvARRAY (av)[0];
2260 IV count = SvIVX (count_sv);
2261
2262 count += adjust;
2263 SvIVX (count_sv) = count;
2264
2265 /* now wake up as many waiters as are expected to lock */
2266 while (count > 0 && AvFILLp (av) > 0)
2267 {
2268 SV *cb;
2269
2270 /* swap first two elements so we can shift a waiter */
2271 AvARRAY (av)[0] = AvARRAY (av)[1];
2272 AvARRAY (av)[1] = count_sv;
2273 cb = av_shift (av);
2274
2275 if (SvOBJECT (cb))
2276 {
2277 api_ready (aTHX_ cb);
2278 --count;
2279 }
2280 else if (SvTYPE (cb) == SVt_PVCV)
2281 {
2282 dSP;
2283 PUSHMARK (SP);
2284 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2285 PUTBACK;
2286 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2287 }
2288
2289 SvREFCNT_dec (cb);
2290 }
2291}
2292
2293static void
2294coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2295{
2296 /* call $sem->adjust (0) to possibly wake up some other waiters */
2297 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2298}
2299
2300static int
2301slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2302{
2303 AV *av = (AV *)frame->data;
2304 SV *count_sv = AvARRAY (av)[0];
2305
2306 /* if we are about to throw, don't actually acquire the lock, just throw */
2307 if (CORO_THROW)
2308 return 0;
2309 else if (SvIVX (count_sv) > 0)
2310 {
2311 SvSTATE_current->on_destroy = 0;
2312
2313 if (acquire)
2314 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2315 else
2316 coro_semaphore_adjust (aTHX_ av, 0);
2317
2318 return 0;
2319 }
2320 else
2321 {
2322 int i;
2323 /* if we were woken up but can't down, we look through the whole */
2324 /* waiters list and only add us if we aren't in there already */
2325 /* this avoids some degenerate memory usage cases */
2326
2327 for (i = 1; i <= AvFILLp (av); ++i)
2328 if (AvARRAY (av)[i] == SvRV (coro_current))
2329 return 1;
2330
2331 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2332 return 1;
2333 }
2334}
2335
2336static int
2337slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2338{
2339 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2340}
2341
2342static int
2343slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2344{
2345 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2346}
2347
2348static void
2349slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2350{
2351 AV *av = (AV *)SvRV (arg [0]);
2352
2353 if (SvIVX (AvARRAY (av)[0]) > 0)
2354 {
2355 frame->data = (void *)av;
2356 frame->prepare = prepare_nop;
2357 }
2358 else
2359 {
2360 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2361
2362 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2363 frame->prepare = prepare_schedule;
2364
2365 /* to avoid race conditions when a woken-up coro gets terminated */
2366 /* we arrange for a temporary on_destroy that calls adjust (0) */
2367 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2368 }
2369}
2370
2371static void
2372slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2373{
2374 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2375 frame->check = slf_check_semaphore_down;
2376}
2377
2378static void
2379slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2380{
2381 if (items >= 2)
2382 {
2383 /* callback form */
2384 AV *av = (AV *)SvRV (arg [0]);
2385 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2386
2387 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2388
2389 if (SvIVX (AvARRAY (av)[0]) > 0)
2390 coro_semaphore_adjust (aTHX_ av, 0);
2391
2392 frame->prepare = prepare_nop;
2393 frame->check = slf_check_nop;
2394 }
2395 else
2396 {
2397 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2398 frame->check = slf_check_semaphore_wait;
2399 }
2400}
2401
2402/* signal */
2403
2404static void
2405coro_signal_wake (pTHX_ AV *av, int count)
2406{
2407 SvIVX (AvARRAY (av)[0]) = 0;
2408
2409 /* now signal count waiters */
2410 while (count > 0 && AvFILLp (av) > 0)
2411 {
2412 SV *cb;
2413
2414 /* swap first two elements so we can shift a waiter */
2415 cb = AvARRAY (av)[0];
2416 AvARRAY (av)[0] = AvARRAY (av)[1];
2417 AvARRAY (av)[1] = cb;
2418
2419 cb = av_shift (av);
2420
2421 api_ready (aTHX_ cb);
2422 sv_setiv (cb, 0); /* signal waiter */
2423 SvREFCNT_dec (cb);
2424
2425 --count;
2426 }
2427}
2428
2429static int
2430slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2431{
2432 /* if we are about to throw, also stop waiting */
2433 return SvROK ((SV *)frame->data) && !CORO_THROW;
2434}
2435
2436static void
2437slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2438{
2439 AV *av = (AV *)SvRV (arg [0]);
2440
2441 if (SvIVX (AvARRAY (av)[0]))
2442 {
2443 SvIVX (AvARRAY (av)[0]) = 0;
2444 frame->prepare = prepare_nop;
2445 frame->check = slf_check_nop;
2446 }
2447 else
2448 {
2449 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2450
2451 av_push (av, waiter);
2452
2453 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2454 frame->prepare = prepare_schedule;
2455 frame->check = slf_check_signal_wait;
2456 }
2457}
2458
2459/*****************************************************************************/
2460/* Coro::AIO */
2461
2462#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2463
2464/* helper storage struct */
2465struct io_state
2466{
2467 int errorno;
2468 I32 laststype; /* U16 in 5.10.0 */
2469 int laststatval;
2470 Stat_t statcache;
2471};
2472
2473static void
2474coro_aio_callback (pTHX_ CV *cv)
2475{
2476 dXSARGS;
2477 AV *state = (AV *)GENSUB_ARG;
2478 SV *coro = av_pop (state);
2479 SV *data_sv = newSV (sizeof (struct io_state));
2480
2481 av_extend (state, items - 1);
2482
2483 sv_upgrade (data_sv, SVt_PV);
2484 SvCUR_set (data_sv, sizeof (struct io_state));
2485 SvPOK_only (data_sv);
2486
2487 {
2488 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2489
2490 data->errorno = errno;
2491 data->laststype = PL_laststype;
2492 data->laststatval = PL_laststatval;
2493 data->statcache = PL_statcache;
2494 }
2495
2496 /* now build the result vector out of all the parameters and the data_sv */
2497 {
2498 int i;
2499
2500 for (i = 0; i < items; ++i)
2501 av_push (state, SvREFCNT_inc_NN (ST (i)));
2502 }
2503
2504 av_push (state, data_sv);
2505
2506 api_ready (aTHX_ coro);
2507 SvREFCNT_dec (coro);
2508 SvREFCNT_dec ((AV *)state);
2509}
2510
2511static int
2512slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2513{
2514 AV *state = (AV *)frame->data;
2515
2516 /* if we are about to throw, return early */
2517 /* this does not cancel the aio request, but at least */
2518 /* it quickly returns */
2519 if (CORO_THROW)
2520 return 0;
2521
2522 /* one element that is an RV? repeat! */
2523 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2524 return 1;
2525
2526 /* restore status */
2527 {
2528 SV *data_sv = av_pop (state);
2529 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2530
2531 errno = data->errorno;
2532 PL_laststype = data->laststype;
2533 PL_laststatval = data->laststatval;
2534 PL_statcache = data->statcache;
2535
2536 SvREFCNT_dec (data_sv);
2537 }
2538
2539 /* push result values */
2540 {
2541 dSP;
2542 int i;
2543
2544 EXTEND (SP, AvFILLp (state) + 1);
2545 for (i = 0; i <= AvFILLp (state); ++i)
2546 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2547
2548 PUTBACK;
2549 }
2550
2551 return 0;
2552}
2553
2554static void
2555slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2556{
2557 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2558 SV *coro_hv = SvRV (coro_current);
2559 struct coro *coro = SvSTATE_hv (coro_hv);
2560
2561 /* put our coroutine id on the state arg */
2562 av_push (state, SvREFCNT_inc_NN (coro_hv));
2563
2564 /* first see whether we have a non-zero priority and set it as AIO prio */
2565 if (coro->prio)
2566 {
2567 dSP;
2568
2569 static SV *prio_cv;
2570 static SV *prio_sv;
2571
2572 if (expect_false (!prio_cv))
2573 {
2574 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2575 prio_sv = newSViv (0);
2576 }
2577
2578 PUSHMARK (SP);
2579 sv_setiv (prio_sv, coro->prio);
2580 XPUSHs (prio_sv);
2581
2582 PUTBACK;
2583 call_sv (prio_cv, G_VOID | G_DISCARD);
2584 }
2585
2586 /* now call the original request */
2587 {
2588 dSP;
2589 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2590 int i;
2591
2592 PUSHMARK (SP);
2593
2594 /* first push all args to the stack */
2595 EXTEND (SP, items + 1);
2596
2597 for (i = 0; i < items; ++i)
2598 PUSHs (arg [i]);
2599
2600 /* now push the callback closure */
2601 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2602
2603 /* now call the AIO function - we assume our request is uncancelable */
2604 PUTBACK;
2605 call_sv ((SV *)req, G_VOID | G_DISCARD);
2606 }
2607
2608 /* now that the requets is going, we loop toll we have a result */
2609 frame->data = (void *)state;
2610 frame->prepare = prepare_schedule;
2611 frame->check = slf_check_aio_req;
2612}
2613
2614static void
2615coro_aio_req_xs (pTHX_ CV *cv)
2616{
2617 dXSARGS;
2618
2619 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2620
2621 XSRETURN_EMPTY;
2622}
2623
2624/*****************************************************************************/
1744 2625
1745MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2626MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1746 2627
1747PROTOTYPES: DISABLE 2628PROTOTYPES: DISABLE
1748 2629
1749BOOT: 2630BOOT:
1750{ 2631{
1751#ifdef USE_ITHREADS 2632#ifdef USE_ITHREADS
1752 MUTEX_INIT (&coro_lock); 2633# if CORO_PTHREAD
2634 coro_thx = PERL_GET_CONTEXT;
2635# endif
1753#endif 2636#endif
1754 BOOT_PAGESIZE; 2637 BOOT_PAGESIZE;
1755 2638
1756 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2639 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1757 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2640 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
1775 main_top_env = PL_top_env; 2658 main_top_env = PL_top_env;
1776 2659
1777 while (main_top_env->je_prev) 2660 while (main_top_env->je_prev)
1778 main_top_env = main_top_env->je_prev; 2661 main_top_env = main_top_env->je_prev;
1779 2662
2663 {
2664 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2665
2666 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2667 hv_store_ent (PL_custom_op_names, slf,
2668 newSVpv ("coro_slf", 0), 0);
2669
2670 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2671 hv_store_ent (PL_custom_op_descs, slf,
2672 newSVpv ("coro schedule like function", 0), 0);
2673 }
2674
1780 coroapi.ver = CORO_API_VERSION; 2675 coroapi.ver = CORO_API_VERSION;
1781 coroapi.rev = CORO_API_REVISION; 2676 coroapi.rev = CORO_API_REVISION;
2677
1782 coroapi.transfer = api_transfer; 2678 coroapi.transfer = api_transfer;
2679
2680 coroapi.sv_state = SvSTATE_;
2681 coroapi.execute_slf = api_execute_slf;
2682 coroapi.prepare_nop = prepare_nop;
2683 coroapi.prepare_schedule = prepare_schedule;
2684 coroapi.prepare_cede = prepare_cede;
2685 coroapi.prepare_cede_notself = prepare_cede_notself;
1783 2686
1784 { 2687 {
1785 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2688 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1786 2689
1787 if (!svp) croak ("Time::HiRes is required"); 2690 if (!svp) croak ("Time::HiRes is required");
… …
1793 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2696 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1794} 2697}
1795 2698
1796SV * 2699SV *
1797new (char *klass, ...) 2700new (char *klass, ...)
2701 ALIAS:
2702 Coro::new = 1
1798 CODE: 2703 CODE:
1799{ 2704{
1800 struct coro *coro; 2705 struct coro *coro;
1801 MAGIC *mg; 2706 MAGIC *mg;
1802 HV *hv; 2707 HV *hv;
2708 CV *cb;
1803 int i; 2709 int i;
2710
2711 if (items > 1)
2712 {
2713 cb = coro_sv_2cv (aTHX_ ST (1));
2714
2715 if (!ix)
2716 {
2717 if (CvISXSUB (cb))
2718 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2719
2720 if (!CvROOT (cb))
2721 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2722 }
2723 }
1804 2724
1805 Newz (0, coro, 1, struct coro); 2725 Newz (0, coro, 1, struct coro);
1806 coro->args = newAV (); 2726 coro->args = newAV ();
1807 coro->flags = CF_NEW; 2727 coro->flags = CF_NEW;
1808 2728
… …
1813 coro->hv = hv = newHV (); 2733 coro->hv = hv = newHV ();
1814 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2734 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1815 mg->mg_flags |= MGf_DUP; 2735 mg->mg_flags |= MGf_DUP;
1816 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2736 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1817 2737
2738 if (items > 1)
2739 {
1818 av_extend (coro->args, items - 1); 2740 av_extend (coro->args, items - 1 + ix - 1);
2741
2742 if (ix)
2743 {
2744 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2745 cb = cv_coro_run;
2746 }
2747
2748 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2749
1819 for (i = 1; i < items; i++) 2750 for (i = 2; i < items; i++)
1820 av_push (coro->args, newSVsv (ST (i))); 2751 av_push (coro->args, newSVsv (ST (i)));
2752 }
1821} 2753}
1822 OUTPUT: 2754 OUTPUT:
1823 RETVAL 2755 RETVAL
1824 2756
1825# these not obviously related functions are all rolled into the same xs
1826# function to increase chances that they all will call transfer with the same
1827# stack offset
1828void 2757void
1829_set_stacklevel (...) 2758transfer (...)
1830 ALIAS: 2759 PROTOTYPE: $$
1831 Coro::State::transfer = 1 2760 CODE:
1832 Coro::schedule = 2 2761 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1833 Coro::cede = 3
1834 Coro::cede_notself = 4
1835 CODE:
1836{
1837 struct transfer_args ta;
1838
1839 PUTBACK;
1840 switch (ix)
1841 {
1842 case 0:
1843 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1844 ta.next = 0;
1845 break;
1846
1847 case 1:
1848 if (items != 2)
1849 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1850
1851 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1852 break;
1853
1854 case 2:
1855 prepare_schedule (aTHX_ &ta);
1856 break;
1857
1858 case 3:
1859 prepare_cede (aTHX_ &ta);
1860 break;
1861
1862 case 4:
1863 if (!prepare_cede_notself (aTHX_ &ta))
1864 XSRETURN_EMPTY;
1865
1866 break;
1867 }
1868 SPAGAIN;
1869
1870 BARRIER;
1871 PUTBACK;
1872 TRANSFER (ta, 0);
1873 SPAGAIN; /* might be the sp of a different coroutine now */
1874 /* be extra careful not to ever do anything after TRANSFER */
1875}
1876 2762
1877bool 2763bool
1878_destroy (SV *coro_sv) 2764_destroy (SV *coro_sv)
1879 CODE: 2765 CODE:
1880 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2766 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1887 CODE: 2773 CODE:
1888 _exit (code); 2774 _exit (code);
1889 2775
1890int 2776int
1891cctx_stacksize (int new_stacksize = 0) 2777cctx_stacksize (int new_stacksize = 0)
2778 PROTOTYPE: ;$
1892 CODE: 2779 CODE:
1893 RETVAL = coro_stacksize; 2780 RETVAL = cctx_stacksize;
1894 if (new_stacksize) 2781 if (new_stacksize)
2782 {
1895 coro_stacksize = new_stacksize; 2783 cctx_stacksize = new_stacksize;
2784 ++cctx_gen;
2785 }
1896 OUTPUT: 2786 OUTPUT:
1897 RETVAL 2787 RETVAL
1898 2788
1899int 2789int
2790cctx_max_idle (int max_idle = 0)
2791 PROTOTYPE: ;$
2792 CODE:
2793 RETVAL = cctx_max_idle;
2794 if (max_idle > 1)
2795 cctx_max_idle = max_idle;
2796 OUTPUT:
2797 RETVAL
2798
2799int
1900cctx_count () 2800cctx_count ()
2801 PROTOTYPE:
1901 CODE: 2802 CODE:
1902 RETVAL = cctx_count; 2803 RETVAL = cctx_count;
1903 OUTPUT: 2804 OUTPUT:
1904 RETVAL 2805 RETVAL
1905 2806
1906int 2807int
1907cctx_idle () 2808cctx_idle ()
2809 PROTOTYPE:
1908 CODE: 2810 CODE:
1909 RETVAL = cctx_idle; 2811 RETVAL = cctx_idle;
1910 OUTPUT: 2812 OUTPUT:
1911 RETVAL 2813 RETVAL
1912 2814
1913void 2815void
1914list () 2816list ()
2817 PROTOTYPE:
1915 PPCODE: 2818 PPCODE:
1916{ 2819{
1917 struct coro *coro; 2820 struct coro *coro;
1918 for (coro = coro_first; coro; coro = coro->next) 2821 for (coro = coro_first; coro; coro = coro->next)
1919 if (coro->hv) 2822 if (coro->hv)
… …
1978 RETVAL = boolSV (coro->flags & ix); 2881 RETVAL = boolSV (coro->flags & ix);
1979 OUTPUT: 2882 OUTPUT:
1980 RETVAL 2883 RETVAL
1981 2884
1982void 2885void
2886throw (Coro::State self, SV *throw = &PL_sv_undef)
2887 PROTOTYPE: $;$
2888 CODE:
2889{
2890 struct coro *current = SvSTATE_current;
2891 SV **throwp = self == current ? &CORO_THROW : &self->except;
2892 SvREFCNT_dec (*throwp);
2893 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2894}
2895
2896void
1983api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2897api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2898 PROTOTYPE: $;$
2899 C_ARGS: aTHX_ coro, flags
1984 2900
1985SV * 2901SV *
1986has_cctx (Coro::State coro) 2902has_cctx (Coro::State coro)
1987 PROTOTYPE: $ 2903 PROTOTYPE: $
1988 CODE: 2904 CODE:
… …
1996 CODE: 2912 CODE:
1997 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2913 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1998 OUTPUT: 2914 OUTPUT:
1999 RETVAL 2915 RETVAL
2000 2916
2001IV 2917UV
2002rss (Coro::State coro) 2918rss (Coro::State coro)
2003 PROTOTYPE: $ 2919 PROTOTYPE: $
2004 ALIAS: 2920 ALIAS:
2005 usecount = 1 2921 usecount = 1
2006 CODE: 2922 CODE:
… …
2012 OUTPUT: 2928 OUTPUT:
2013 RETVAL 2929 RETVAL
2014 2930
2015void 2931void
2016force_cctx () 2932force_cctx ()
2933 PROTOTYPE:
2017 CODE: 2934 CODE:
2018 struct coro *coro = SvSTATE (coro_current);
2019 coro->cctx->idle_sp = 0; 2935 SvSTATE_current->cctx->idle_sp = 0;
2020 2936
2021void 2937void
2022swap_defsv (Coro::State self) 2938swap_defsv (Coro::State self)
2023 PROTOTYPE: $ 2939 PROTOTYPE: $
2024 ALIAS: 2940 ALIAS:
2025 swap_defav = 1 2941 swap_defav = 1
2026 CODE: 2942 CODE:
2027 if (!self->slot) 2943 if (!self->slot)
2028 croak ("cannot swap state with coroutine that has no saved state"); 2944 croak ("cannot swap state with coroutine that has no saved state,");
2029 else 2945 else
2030 { 2946 {
2031 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2947 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2032 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2948 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2033 2949
2034 SV *tmp = *src; *src = *dst; *dst = tmp; 2950 SV *tmp = *src; *src = *dst; *dst = tmp;
2035 } 2951 }
2036 2952
2953
2037MODULE = Coro::State PACKAGE = Coro 2954MODULE = Coro::State PACKAGE = Coro
2038 2955
2039BOOT: 2956BOOT:
2040{ 2957{
2041 int i; 2958 int i;
2042 2959
2043 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2960 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2044 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2961 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2045 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2962 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2046 2963 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2964 cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);
2047 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2965 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2048 SvREADONLY_on (coro_current); 2966 SvREADONLY_on (coro_current);
2967
2968 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2969 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2970 cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler);
2971 cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new);
2049 2972
2050 coro_stash = gv_stashpv ("Coro", TRUE); 2973 coro_stash = gv_stashpv ("Coro", TRUE);
2051 2974
2052 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2975 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2053 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2976 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2058 2981
2059 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2982 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2060 coro_ready[i] = newAV (); 2983 coro_ready[i] = newAV ();
2061 2984
2062 { 2985 {
2063 SV *sv = perl_get_sv ("Coro::API", TRUE); 2986 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2064 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2065 2987
2066 coroapi.schedule = api_schedule; 2988 coroapi.schedule = api_schedule;
2067 coroapi.cede = api_cede; 2989 coroapi.cede = api_cede;
2068 coroapi.cede_notself = api_cede_notself; 2990 coroapi.cede_notself = api_cede_notself;
2069 coroapi.ready = api_ready; 2991 coroapi.ready = api_ready;
2070 coroapi.is_ready = api_is_ready; 2992 coroapi.is_ready = api_is_ready;
2071 coroapi.nready = &coro_nready; 2993 coroapi.nready = coro_nready;
2072 coroapi.current = coro_current; 2994 coroapi.current = coro_current;
2073 2995
2074 GCoroAPI = &coroapi; 2996 /*GCoroAPI = &coroapi;*/
2075 sv_setiv (sv, (IV)&coroapi); 2997 sv_setiv (sv, (IV)&coroapi);
2076 SvREADONLY_on (sv); 2998 SvREADONLY_on (sv);
2077 } 2999 }
2078} 3000}
3001
3002void
3003schedule (...)
3004 CODE:
3005 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3006
3007void
3008cede (...)
3009 CODE:
3010 CORO_EXECUTE_SLF_XS (slf_init_cede);
3011
3012void
3013cede_notself (...)
3014 CODE:
3015 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2079 3016
2080void 3017void
2081_set_current (SV *current) 3018_set_current (SV *current)
2082 PROTOTYPE: $ 3019 PROTOTYPE: $
2083 CODE: 3020 CODE:
… …
2086 3023
2087void 3024void
2088_set_readyhook (SV *hook) 3025_set_readyhook (SV *hook)
2089 PROTOTYPE: $ 3026 PROTOTYPE: $
2090 CODE: 3027 CODE:
2091 LOCK;
2092 SvREFCNT_dec (coro_readyhook); 3028 SvREFCNT_dec (coro_readyhook);
2093 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3029 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2094 UNLOCK;
2095 3030
2096int 3031int
2097prio (Coro::State coro, int newprio = 0) 3032prio (Coro::State coro, int newprio = 0)
3033 PROTOTYPE: $;$
2098 ALIAS: 3034 ALIAS:
2099 nice = 1 3035 nice = 1
2100 CODE: 3036 CODE:
2101{ 3037{
2102 RETVAL = coro->prio; 3038 RETVAL = coro->prio;
… …
2117 3053
2118SV * 3054SV *
2119ready (SV *self) 3055ready (SV *self)
2120 PROTOTYPE: $ 3056 PROTOTYPE: $
2121 CODE: 3057 CODE:
2122 RETVAL = boolSV (api_ready (self)); 3058 RETVAL = boolSV (api_ready (aTHX_ self));
2123 OUTPUT: 3059 OUTPUT:
2124 RETVAL 3060 RETVAL
2125 3061
2126int 3062int
2127nready (...) 3063nready (...)
… …
2130 RETVAL = coro_nready; 3066 RETVAL = coro_nready;
2131 OUTPUT: 3067 OUTPUT:
2132 RETVAL 3068 RETVAL
2133 3069
2134void 3070void
2135throw (Coro::State self, SV *throw = &PL_sv_undef) 3071_pool_handler (...)
2136 PROTOTYPE: $;$ 3072 CODE:
2137 CODE: 3073 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2138 SvREFCNT_dec (self->throw);
2139 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2140 3074
2141# for async_pool speedup
2142void 3075void
2143_pool_1 (SV *cb) 3076async_pool (SV *cv, ...)
3077 PROTOTYPE: &@
3078 PPCODE:
3079{
3080 HV *hv = (HV *)av_pop (av_async_pool);
3081 AV *av = newAV ();
3082 SV *cb = ST (0);
3083 int i;
3084
3085 av_extend (av, items - 2);
3086 for (i = 1; i < items; ++i)
3087 av_push (av, SvREFCNT_inc_NN (ST (i)));
3088
3089 if ((SV *)hv == &PL_sv_undef)
3090 {
3091 PUSHMARK (SP);
3092 EXTEND (SP, 2);
3093 PUSHs (sv_Coro);
3094 PUSHs ((SV *)cv_pool_handler);
3095 PUTBACK;
3096 call_sv (cv_coro_new, G_SCALAR);
3097 SPAGAIN;
3098
3099 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3100 }
3101
3102 {
3103 struct coro *coro = SvSTATE_hv (hv);
3104
3105 assert (!coro->invoke_cb);
3106 assert (!coro->invoke_av);
3107 coro->invoke_cb = SvREFCNT_inc (cb);
3108 coro->invoke_av = av;
3109 }
3110
3111 api_ready ((SV *)hv);
3112
3113 if (GIMME_V != G_VOID)
3114 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3115 else
3116 SvREFCNT_dec (hv);
3117}
3118
3119SV *
3120rouse_cb ()
3121 PROTOTYPE:
2144 CODE: 3122 CODE:
2145{ 3123 RETVAL = coro_new_rouse_cb (aTHX);
2146 struct coro *coro = SvSTATE (coro_current);
2147 HV *hv = (HV *)SvRV (coro_current);
2148 AV *defav = GvAV (PL_defgv);
2149 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2150 AV *invoke_av;
2151 int i, len;
2152
2153 if (!invoke)
2154 {
2155 SV *old = PL_diehook;
2156 PL_diehook = 0;
2157 SvREFCNT_dec (old);
2158 croak ("\3async_pool terminate\2\n");
2159 }
2160
2161 SvREFCNT_dec (coro->saved_deffh);
2162 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2163
2164 hv_store (hv, "desc", sizeof ("desc") - 1,
2165 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2166
2167 invoke_av = (AV *)SvRV (invoke);
2168 len = av_len (invoke_av);
2169
2170 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2171
2172 if (len > 0)
2173 {
2174 av_fill (defav, len - 1);
2175 for (i = 0; i < len; ++i)
2176 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2177 }
2178
2179 SvREFCNT_dec (invoke);
2180}
2181
2182void
2183_pool_2 (SV *cb)
2184 CODE:
2185{
2186 struct coro *coro = SvSTATE (coro_current);
2187
2188 sv_setsv (cb, &PL_sv_undef);
2189
2190 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2191 coro->saved_deffh = 0;
2192
2193 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2194 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2195 {
2196 SV *old = PL_diehook;
2197 PL_diehook = 0;
2198 SvREFCNT_dec (old);
2199 croak ("\3async_pool terminate\2\n");
2200 }
2201
2202 av_clear (GvAV (PL_defgv));
2203 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2204 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2205
2206 coro->prio = 0;
2207
2208 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2209 api_trace (coro_current, 0);
2210
2211 av_push (av_async_pool, newSVsv (coro_current));
2212}
2213
2214#if 0
2215
2216void
2217_generator_call (...)
2218 PROTOTYPE: @
2219 PPCODE:
2220 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2221 xxxx
2222 abort ();
2223
2224SV *
2225gensub (SV *sub, ...)
2226 PROTOTYPE: &;@
2227 CODE:
2228{
2229 struct coro *coro;
2230 MAGIC *mg;
2231 CV *xcv;
2232 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2233 int i;
2234
2235 CvGV (ncv) = CvGV (cv);
2236 CvFILE (ncv) = CvFILE (cv);
2237
2238 Newz (0, coro, 1, struct coro);
2239 coro->args = newAV ();
2240 coro->flags = CF_NEW;
2241
2242 av_extend (coro->args, items - 1);
2243 for (i = 1; i < items; i++)
2244 av_push (coro->args, newSVsv (ST (i)));
2245
2246 CvISXSUB_on (ncv);
2247 CvXSUBANY (ncv).any_ptr = (void *)coro;
2248
2249 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2250
2251 CvXSUB (ncv) = CvXSUB (xcv);
2252 CvANON_on (ncv);
2253
2254 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2255 RETVAL = newRV_noinc ((SV *)ncv);
2256}
2257 OUTPUT: 3124 OUTPUT:
2258 RETVAL 3125 RETVAL
2259 3126
2260#endif
2261
2262
2263MODULE = Coro::State PACKAGE = Coro::AIO
2264
2265void 3127void
2266_get_state (SV *self) 3128rouse_wait (...)
3129 PROTOTYPE: ;$
2267 PPCODE: 3130 PPCODE:
2268{ 3131 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2269 AV *defav = GvAV (PL_defgv);
2270 AV *av = newAV ();
2271 int i;
2272 SV *data_sv = newSV (sizeof (struct io_state));
2273 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2274 SvCUR_set (data_sv, sizeof (struct io_state));
2275 SvPOK_only (data_sv);
2276 3132
2277 data->errorno = errno;
2278 data->laststype = PL_laststype;
2279 data->laststatval = PL_laststatval;
2280 data->statcache = PL_statcache;
2281 3133
2282 av_extend (av, AvFILLp (defav) + 1 + 1); 3134MODULE = Coro::State PACKAGE = PerlIO::cede
2283 3135
2284 for (i = 0; i <= AvFILLp (defav); ++i) 3136BOOT:
2285 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3137 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2286 3138
2287 av_push (av, data_sv);
2288 3139
2289 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3140MODULE = Coro::State PACKAGE = Coro::Semaphore
2290 3141
2291 api_ready (self); 3142SV *
2292} 3143new (SV *klass, SV *count = 0)
3144 CODE:
3145 RETVAL = sv_bless (
3146 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3147 GvSTASH (CvGV (cv))
3148 );
3149 OUTPUT:
3150 RETVAL
3151
3152# helper for Coro::Channel
3153SV *
3154_alloc (int count)
3155 CODE:
3156 RETVAL = coro_waitarray_new (aTHX_ count);
3157 OUTPUT:
3158 RETVAL
3159
3160SV *
3161count (SV *self)
3162 CODE:
3163 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3164 OUTPUT:
3165 RETVAL
2293 3166
2294void 3167void
2295_set_state (SV *state) 3168up (SV *self, int adjust = 1)
2296 PROTOTYPE: $ 3169 ALIAS:
3170 adjust = 1
3171 CODE:
3172 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3173
3174void
3175down (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3178
3179void
3180wait (...)
3181 CODE:
3182 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3183
3184void
3185try (SV *self)
3186 PPCODE:
3187{
3188 AV *av = (AV *)SvRV (self);
3189 SV *count_sv = AvARRAY (av)[0];
3190 IV count = SvIVX (count_sv);
3191
3192 if (count > 0)
3193 {
3194 --count;
3195 SvIVX (count_sv) = count;
3196 XSRETURN_YES;
3197 }
3198 else
3199 XSRETURN_NO;
3200}
3201
3202void
3203waiters (SV *self)
3204 PPCODE:
3205{
3206 AV *av = (AV *)SvRV (self);
3207 int wcount = AvFILLp (av) + 1 - 1;
3208
3209 if (GIMME_V == G_SCALAR)
3210 XPUSHs (sv_2mortal (newSViv (wcount)));
3211 else
3212 {
3213 int i;
3214 EXTEND (SP, wcount);
3215 for (i = 1; i <= wcount; ++i)
3216 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3217 }
3218}
3219
3220MODULE = Coro::State PACKAGE = Coro::Signal
3221
3222SV *
3223new (SV *klass)
2297 PPCODE: 3224 CODE:
3225 RETVAL = sv_bless (
3226 coro_waitarray_new (aTHX_ 0),
3227 GvSTASH (CvGV (cv))
3228 );
3229 OUTPUT:
3230 RETVAL
3231
3232void
3233wait (...)
3234 CODE:
3235 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3236
3237void
3238broadcast (SV *self)
3239 CODE:
2298{ 3240{
2299 AV *av = (AV *)SvRV (state); 3241 AV *av = (AV *)SvRV (self);
2300 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3242 coro_signal_wake (aTHX_ av, AvFILLp (av));
2301 int i; 3243}
2302 3244
2303 errno = data->errorno; 3245void
2304 PL_laststype = data->laststype; 3246send (SV *self)
2305 PL_laststatval = data->laststatval; 3247 CODE:
2306 PL_statcache = data->statcache; 3248{
3249 AV *av = (AV *)SvRV (self);
2307 3250
2308 EXTEND (SP, AvFILLp (av)); 3251 if (AvFILLp (av))
2309 for (i = 0; i < AvFILLp (av); ++i) 3252 coro_signal_wake (aTHX_ av, 1);
2310 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3253 else
3254 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2311} 3255}
3256
3257IV
3258awaited (SV *self)
3259 CODE:
3260 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3261 OUTPUT:
3262 RETVAL
2312 3263
2313 3264
2314MODULE = Coro::State PACKAGE = Coro::AnyEvent 3265MODULE = Coro::State PACKAGE = Coro::AnyEvent
2315 3266
2316BOOT: 3267BOOT:
2317 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3268 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2318 3269
2319SV * 3270void
2320_schedule (...) 3271_schedule (...)
2321 PROTOTYPE: @
2322 CODE: 3272 CODE:
2323{ 3273{
2324 static int incede; 3274 static int incede;
2325 3275
2326 api_cede_notself (); 3276 api_cede_notself (aTHX);
2327 3277
2328 ++incede; 3278 ++incede;
2329 while (coro_nready >= incede && api_cede ()) 3279 while (coro_nready >= incede && api_cede (aTHX))
2330 ; 3280 ;
2331 3281
2332 sv_setsv (sv_activity, &PL_sv_undef); 3282 sv_setsv (sv_activity, &PL_sv_undef);
2333 if (coro_nready >= incede) 3283 if (coro_nready >= incede)
2334 { 3284 {
2335 PUSHMARK (SP); 3285 PUSHMARK (SP);
2336 PUTBACK; 3286 PUTBACK;
2337 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3287 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2338 SPAGAIN;
2339 } 3288 }
2340 3289
2341 --incede; 3290 --incede;
2342} 3291}
2343 3292
2344 3293
2345MODULE = Coro::State PACKAGE = PerlIO::cede 3294MODULE = Coro::State PACKAGE = Coro::AIO
2346 3295
2347BOOT: 3296void
2348 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3297_register (char *target, char *proto, SV *req)
3298 CODE:
3299{
3300 CV *req_cv = coro_sv_2cv (aTHX_ req);
3301 /* newXSproto doesn't return the CV on 5.8 */
3302 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3303 sv_setpv ((SV *)slf_cv, proto);
3304 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3305}
3306

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