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Comparing Coro/Coro/State.xs (file contents):
Revision 1.252 by root, Tue Nov 4 12:08:44 2008 UTC vs.
Revision 1.313 by root, Thu Nov 20 03:22:59 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_mutex; 153# if CORO_PTHREAD
148# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 154static void *coro_thx;
149# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } 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);
… …
628 667
629/* 668/*
630 * destroy the stacks, the callchain etc... 669 * destroy the stacks, the callchain etc...
631 */ 670 */
632static void 671static void
633coro_destroy_stacks (pTHX) 672coro_destruct_stacks (pTHX)
634{ 673{
635 while (PL_curstackinfo->si_next) 674 while (PL_curstackinfo->si_next)
636 PL_curstackinfo = PL_curstackinfo->si_next; 675 PL_curstackinfo = PL_curstackinfo->si_next;
637 676
638 while (PL_curstackinfo) 677 while (PL_curstackinfo)
… …
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 */
845} 890 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
846 891
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;
902}
903
847static void 904static void
848coro_destroy (pTHX_ struct coro *coro) 905coro_destruct (pTHX_ struct coro *coro)
849{ 906{
850 if (!IN_DESTRUCT) 907 if (!IN_DESTRUCT)
851 { 908 {
852 /* restore all saved variables and stuff */ 909 /* restore all saved variables and stuff */
853 LEAVE_SCOPE (0); 910 LEAVE_SCOPE (0);
… …
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_destroy_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
1086 Newz (0, cctx, 1, coro_cctx);
1087
1088#if HAVE_MMAP 1202#if HAVE_MMAP
1089 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;
1090 /* mmap supposedly does allocate-on-write for us */ 1204 /* mmap supposedly does allocate-on-write for us */
1091 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);
1092 1206
1093 if (cctx->sptr != (void *)-1) 1207 if (cctx->sptr != (void *)-1)
1094 { 1208 {
1095# if CORO_STACKGUARD 1209 #if CORO_STACKGUARD
1096 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1210 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1097# endif 1211 #endif
1098 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1212 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1099 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1213 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1100 cctx->flags |= CC_MAPPED; 1214 cctx->flags |= CC_MAPPED;
1101 } 1215 }
1102 else 1216 else
1103#endif 1217#endif
1104 { 1218 {
1105 cctx->ssize = coro_stacksize * (long)sizeof (long); 1219 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1106 New (0, cctx->sptr, coro_stacksize, long); 1220 New (0, cctx->sptr, cctx_stacksize, long);
1107 1221
1108 if (!cctx->sptr) 1222 if (!cctx->sptr)
1109 { 1223 {
1110 perror ("FATAL: unable to allocate stack for coroutine"); 1224 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1111 _exit (EXIT_FAILURE); 1225 _exit (EXIT_FAILURE);
1112 } 1226 }
1113 1227
1114 stack_start = cctx->sptr; 1228 stack_start = cctx->sptr;
1115 stack_size = cctx->ssize; 1229 stack_size = cctx->ssize;
1116 } 1230 }
1117 1231
1118 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
1119 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);
1120 1237
1121 return cctx; 1238 return cctx;
1122} 1239}
1123 1240
… …
1126{ 1243{
1127 if (!cctx) 1244 if (!cctx)
1128 return; 1245 return;
1129 1246
1130 --cctx_count; 1247 --cctx_count;
1248 coro_destroy (&cctx->cctx);
1131 1249
1250 /* coro_transfer creates new, empty cctx's */
1251 if (cctx->sptr)
1252 {
1132#if CORO_USE_VALGRIND 1253 #if CORO_USE_VALGRIND
1133 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1254 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1255 #endif
1256
1257#if HAVE_MMAP
1258 if (cctx->flags & CC_MAPPED)
1259 munmap (cctx->sptr, cctx->ssize);
1260 else
1134#endif 1261#endif
1135
1136#if HAVE_MMAP
1137 if (cctx->flags & CC_MAPPED)
1138 munmap (cctx->sptr, cctx->ssize);
1139 else
1140#endif
1141 Safefree (cctx->sptr); 1262 Safefree (cctx->sptr);
1263 }
1142 1264
1143 Safefree (cctx); 1265 Safefree (cctx);
1144} 1266}
1145 1267
1146/* wether this cctx should be destructed */ 1268/* wether this cctx should be destructed */
1147#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))
1148 1270
1149static coro_cctx * 1271static coro_cctx *
1150cctx_get (pTHX) 1272cctx_get (pTHX)
1151{ 1273{
1152 while (expect_true (cctx_first)) 1274 while (expect_true (cctx_first))
… …
1159 return cctx; 1281 return cctx;
1160 1282
1161 cctx_destroy (cctx); 1283 cctx_destroy (cctx);
1162 } 1284 }
1163 1285
1164 return cctx_new (); 1286 return cctx_new_run ();
1165} 1287}
1166 1288
1167static void 1289static void
1168cctx_put (coro_cctx *cctx) 1290cctx_put (coro_cctx *cctx)
1169{ 1291{
1292 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1293
1170 /* free another cctx if overlimit */ 1294 /* free another cctx if overlimit */
1171 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1295 if (expect_false (cctx_idle >= cctx_max_idle))
1172 { 1296 {
1173 coro_cctx *first = cctx_first; 1297 coro_cctx *first = cctx_first;
1174 cctx_first = first->next; 1298 cctx_first = first->next;
1175 --cctx_idle; 1299 --cctx_idle;
1176 1300
… …
1185/** coroutine switching *****************************************************/ 1309/** coroutine switching *****************************************************/
1186 1310
1187static void 1311static void
1188transfer_check (pTHX_ struct coro *prev, struct coro *next) 1312transfer_check (pTHX_ struct coro *prev, struct coro *next)
1189{ 1313{
1314 /* TODO: throwing up here is considered harmful */
1315
1190 if (expect_true (prev != next)) 1316 if (expect_true (prev != next))
1191 { 1317 {
1192 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1318 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1193 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,");
1194 1320
1195 if (expect_false (next->flags & CF_RUNNING)) 1321 if (expect_false (next->flags & CF_RUNNING))
1196 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,");
1197 1323
1198 if (expect_false (next->flags & CF_DESTROYED)) 1324 if (expect_false (next->flags & CF_DESTROYED))
1199 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,");
1200 1326
1201#if !PERL_VERSION_ATLEAST (5,10,0) 1327#if !PERL_VERSION_ATLEAST (5,10,0)
1202 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1328 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1203 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,");
1204#endif 1330#endif
1205 } 1331 }
1206} 1332}
1207 1333
1208/* always use the TRANSFER macro */ 1334/* always use the TRANSFER macro */
1209static void NOINLINE 1335static void NOINLINE /* noinline so we have a fixed stackframe */
1210transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1336transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1211{ 1337{
1212 dSTACKLEVEL; 1338 dSTACKLEVEL;
1213 1339
1214 /* sometimes transfer is only called to set idle_sp */ 1340 /* sometimes transfer is only called to set idle_sp */
… …
1217 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1343 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1218 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 */
1219 } 1345 }
1220 else if (expect_true (prev != next)) 1346 else if (expect_true (prev != next))
1221 { 1347 {
1222 static volatile int has_throw;
1223 coro_cctx *prev__cctx; 1348 coro_cctx *prev__cctx;
1224 1349
1225 if (expect_false (prev->flags & CF_NEW)) 1350 if (expect_false (prev->flags & CF_NEW))
1226 { 1351 {
1227 /* create a new empty context */ 1352 /* create a new empty/source context */
1228 Newz (0, prev->cctx, 1, coro_cctx); 1353 prev->cctx = cctx_new_empty ();
1229 prev->flags &= ~CF_NEW; 1354 prev->flags &= ~CF_NEW;
1230 prev->flags |= CF_RUNNING; 1355 prev->flags |= CF_RUNNING;
1231 } 1356 }
1232 1357
1233 prev->flags &= ~CF_RUNNING; 1358 prev->flags &= ~CF_RUNNING;
1234 next->flags |= CF_RUNNING; 1359 next->flags |= CF_RUNNING;
1235
1236 LOCK;
1237 1360
1238 /* first get rid of the old state */ 1361 /* first get rid of the old state */
1239 save_perl (aTHX_ prev); 1362 save_perl (aTHX_ prev);
1240 1363
1241 if (expect_false (next->flags & CF_NEW)) 1364 if (expect_false (next->flags & CF_NEW))
… …
1248 else 1371 else
1249 load_perl (aTHX_ next); 1372 load_perl (aTHX_ next);
1250 1373
1251 prev__cctx = prev->cctx; 1374 prev__cctx = prev->cctx;
1252 1375
1253 /* possibly "free" the cctx */ 1376 /* possibly untie and reuse the cctx */
1254 if (expect_true ( 1377 if (expect_true (
1255 prev__cctx->idle_sp == STACKLEVEL 1378 prev__cctx->idle_sp == STACKLEVEL
1256 && !(prev__cctx->flags & CC_TRACE) 1379 && !(prev__cctx->flags & CC_TRACE)
1257 && !force_cctx 1380 && !force_cctx
1258 )) 1381 ))
1259 { 1382 {
1260 /* 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 */
1261 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));
1262 1385
1263 prev->cctx = 0; 1386 prev->cctx = 0;
1264 1387
1265 /* 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 */
1266 /* 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 */
… …
1273 1396
1274 ++next->usecount; 1397 ++next->usecount;
1275 1398
1276 if (expect_true (!next->cctx)) 1399 if (expect_true (!next->cctx))
1277 next->cctx = cctx_get (aTHX); 1400 next->cctx = cctx_get (aTHX);
1278
1279 has_throw = !!next->throw;
1280 1401
1281 if (expect_false (prev__cctx != next->cctx)) 1402 if (expect_false (prev__cctx != next->cctx))
1282 { 1403 {
1283 prev__cctx->top_env = PL_top_env; 1404 prev__cctx->top_env = PL_top_env;
1284 PL_top_env = next->cctx->top_env; 1405 PL_top_env = next->cctx->top_env;
1285 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1406 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1286 } 1407 }
1287 1408
1288 free_coro_mortal (aTHX); 1409 transfer_tail (aTHX);
1289 UNLOCK;
1290
1291 if (expect_false (has_throw))
1292 {
1293 struct coro *coro = SvSTATE (coro_current);
1294
1295 if (coro->throw)
1296 {
1297 SV *exception = coro->throw;
1298 coro->throw = 0;
1299 sv_setsv (ERRSV, exception);
1300 croak (0);
1301 }
1302 }
1303 } 1410 }
1304} 1411}
1305
1306struct transfer_args
1307{
1308 struct coro *prev, *next;
1309};
1310 1412
1311#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))
1312#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1414#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1313 1415
1314/** high level stuff ********************************************************/ 1416/** high level stuff ********************************************************/
… …
1316static int 1418static int
1317coro_state_destroy (pTHX_ struct coro *coro) 1419coro_state_destroy (pTHX_ struct coro *coro)
1318{ 1420{
1319 if (coro->flags & CF_DESTROYED) 1421 if (coro->flags & CF_DESTROYED)
1320 return 0; 1422 return 0;
1423
1424 if (coro->on_destroy)
1425 coro->on_destroy (aTHX_ coro);
1321 1426
1322 coro->flags |= CF_DESTROYED; 1427 coro->flags |= CF_DESTROYED;
1323 1428
1324 if (coro->flags & CF_READY) 1429 if (coro->flags & CF_READY)
1325 { 1430 {
1326 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1431 /* reduce nready, as destroying a ready coro effectively unreadies it */
1327 /* alternative: look through all ready queues and remove the coro */ 1432 /* alternative: look through all ready queues and remove the coro */
1328 LOCK;
1329 --coro_nready; 1433 --coro_nready;
1330 UNLOCK;
1331 } 1434 }
1332 else 1435 else
1333 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 */
1334 1437
1335 if (coro->mainstack && coro->mainstack != main_mainstack) 1438 if (coro->mainstack && coro->mainstack != main_mainstack)
1336 { 1439 {
1337 struct coro temp; 1440 struct coro temp;
1338 1441
1339 if (coro->flags & CF_RUNNING) 1442 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1340 croak ("FATAL: tried to destroy currently running coroutine");
1341 1443
1342 save_perl (aTHX_ &temp); 1444 save_perl (aTHX_ &temp);
1343 load_perl (aTHX_ coro); 1445 load_perl (aTHX_ coro);
1344 1446
1345 coro_destroy (aTHX_ coro); 1447 coro_destruct (aTHX_ coro);
1346 1448
1347 load_perl (aTHX_ &temp); 1449 load_perl (aTHX_ &temp);
1348 1450
1349 coro->slot = 0; 1451 coro->slot = 0;
1350 } 1452 }
1351 1453
1352 cctx_destroy (coro->cctx); 1454 cctx_destroy (coro->cctx);
1455 SvREFCNT_dec (coro->startcv);
1353 SvREFCNT_dec (coro->args); 1456 SvREFCNT_dec (coro->args);
1457 SvREFCNT_dec (CORO_THROW);
1354 1458
1355 if (coro->next) coro->next->prev = coro->prev; 1459 if (coro->next) coro->next->prev = coro->prev;
1356 if (coro->prev) coro->prev->next = coro->next; 1460 if (coro->prev) coro->prev->next = coro->next;
1357 if (coro == coro_first) coro_first = coro->next; 1461 if (coro == coro_first) coro_first = coro->next;
1358 1462
… …
1396# define MGf_DUP 0 1500# define MGf_DUP 0
1397#endif 1501#endif
1398}; 1502};
1399 1503
1400static void 1504static void
1401prepare_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)
1402{ 1506{
1403 ta->prev = SvSTATE (prev_sv); 1507 ta->prev = SvSTATE (prev_sv);
1404 ta->next = SvSTATE (next_sv); 1508 ta->next = SvSTATE (next_sv);
1405 TRANSFER_CHECK (*ta); 1509 TRANSFER_CHECK (*ta);
1406} 1510}
1407 1511
1408static void 1512static void
1409api_transfer (SV *prev_sv, SV *next_sv) 1513api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1410{ 1514{
1411 dTHX;
1412 struct transfer_args ta; 1515 struct coro_transfer_args ta;
1413 1516
1414 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1517 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1415 TRANSFER (ta, 1); 1518 TRANSFER (ta, 1);
1416} 1519}
1417 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
1418/** Coro ********************************************************************/ 1544/** Coro ********************************************************************/
1419 1545
1420static void 1546INLINE void
1421coro_enq (pTHX_ SV *coro_sv) 1547coro_enq (pTHX_ struct coro *coro)
1422{ 1548{
1423 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));
1424} 1550}
1425 1551
1426static SV * 1552INLINE SV *
1427coro_deq (pTHX) 1553coro_deq (pTHX)
1428{ 1554{
1429 int prio; 1555 int prio;
1430 1556
1431 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1557 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1434 1560
1435 return 0; 1561 return 0;
1436} 1562}
1437 1563
1438static int 1564static int
1439api_ready (SV *coro_sv) 1565api_ready (pTHX_ SV *coro_sv)
1440{ 1566{
1441 dTHX;
1442 struct coro *coro; 1567 struct coro *coro;
1443 SV *sv_hook; 1568 SV *sv_hook;
1444 void (*xs_hook)(void); 1569 void (*xs_hook)(void);
1445 1570
1446 if (SvROK (coro_sv)) 1571 if (SvROK (coro_sv))
… …
1451 if (coro->flags & CF_READY) 1576 if (coro->flags & CF_READY)
1452 return 0; 1577 return 0;
1453 1578
1454 coro->flags |= CF_READY; 1579 coro->flags |= CF_READY;
1455 1580
1456 LOCK;
1457
1458 sv_hook = coro_nready ? 0 : coro_readyhook; 1581 sv_hook = coro_nready ? 0 : coro_readyhook;
1459 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1582 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1460 1583
1461 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1584 coro_enq (aTHX_ coro);
1462 ++coro_nready; 1585 ++coro_nready;
1463 1586
1464 UNLOCK;
1465
1466 if (sv_hook) 1587 if (sv_hook)
1467 { 1588 {
1468 dSP; 1589 dSP;
1469 1590
1470 ENTER; 1591 ENTER;
1471 SAVETMPS; 1592 SAVETMPS;
1472 1593
1473 PUSHMARK (SP); 1594 PUSHMARK (SP);
1474 PUTBACK; 1595 PUTBACK;
1475 call_sv (sv_hook, G_DISCARD); 1596 call_sv (sv_hook, G_VOID | G_DISCARD);
1476 SPAGAIN;
1477 1597
1478 FREETMPS; 1598 FREETMPS;
1479 LEAVE; 1599 LEAVE;
1480 } 1600 }
1481 1601
… …
1484 1604
1485 return 1; 1605 return 1;
1486} 1606}
1487 1607
1488static int 1608static int
1489api_is_ready (SV *coro_sv) 1609api_is_ready (pTHX_ SV *coro_sv)
1490{ 1610{
1491 dTHX;
1492 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1611 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1493} 1612}
1494 1613
1495static void 1614INLINE void
1496prepare_schedule (pTHX_ struct transfer_args *ta) 1615prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1497{ 1616{
1498 SV *prev_sv, *next_sv; 1617 SV *prev_sv, *next_sv;
1499 1618
1500 for (;;) 1619 for (;;)
1501 { 1620 {
1502 LOCK;
1503 next_sv = coro_deq (aTHX); 1621 next_sv = coro_deq (aTHX);
1504 1622
1505 /* nothing to schedule: call the idle handler */ 1623 /* nothing to schedule: call the idle handler */
1506 if (expect_false (!next_sv)) 1624 if (expect_false (!next_sv))
1507 { 1625 {
1508 dSP; 1626 dSP;
1509 UNLOCK;
1510 1627
1511 ENTER; 1628 ENTER;
1512 SAVETMPS; 1629 SAVETMPS;
1513 1630
1514 PUSHMARK (SP); 1631 PUSHMARK (SP);
1515 PUTBACK; 1632 PUTBACK;
1516 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1633 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1517 SPAGAIN;
1518 1634
1519 FREETMPS; 1635 FREETMPS;
1520 LEAVE; 1636 LEAVE;
1521 continue; 1637 continue;
1522 } 1638 }
1523 1639
1524 ta->next = SvSTATE (next_sv); 1640 ta->next = SvSTATE_hv (next_sv);
1525 1641
1526 /* cannot transfer to destroyed coros, skip and look for next */ 1642 /* cannot transfer to destroyed coros, skip and look for next */
1527 if (expect_false (ta->next->flags & CF_DESTROYED)) 1643 if (expect_false (ta->next->flags & CF_DESTROYED))
1528 { 1644 {
1529 UNLOCK;
1530 SvREFCNT_dec (next_sv); 1645 SvREFCNT_dec (next_sv);
1531 /* coro_nready is already taken care of by destroy */ 1646 /* coro_nready has already been taken care of by destroy */
1532 continue; 1647 continue;
1533 } 1648 }
1534 1649
1535 --coro_nready; 1650 --coro_nready;
1536 UNLOCK;
1537 break; 1651 break;
1538 } 1652 }
1539 1653
1540 /* free this only after the transfer */ 1654 /* free this only after the transfer */
1541 prev_sv = SvRV (coro_current); 1655 prev_sv = SvRV (coro_current);
1542 ta->prev = SvSTATE (prev_sv); 1656 ta->prev = SvSTATE_hv (prev_sv);
1543 TRANSFER_CHECK (*ta); 1657 TRANSFER_CHECK (*ta);
1544 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));
1545 ta->next->flags &= ~CF_READY; 1659 ta->next->flags &= ~CF_READY;
1546 SvRV_set (coro_current, next_sv); 1660 SvRV_set (coro_current, next_sv);
1547 1661
1548 LOCK;
1549 free_coro_mortal (aTHX); 1662 free_coro_mortal (aTHX);
1550 coro_mortal = prev_sv; 1663 coro_mortal = prev_sv;
1551 UNLOCK;
1552} 1664}
1553 1665
1554static void 1666INLINE void
1555prepare_cede (pTHX_ struct transfer_args *ta) 1667prepare_cede (pTHX_ struct coro_transfer_args *ta)
1556{ 1668{
1557 api_ready (coro_current); 1669 api_ready (aTHX_ coro_current);
1558 prepare_schedule (aTHX_ ta); 1670 prepare_schedule (aTHX_ ta);
1559} 1671}
1560 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
1561static int 1696static int
1562prepare_cede_notself (pTHX_ struct transfer_args *ta) 1697api_cede (pTHX)
1563{ 1698{
1564 if (coro_nready) 1699 struct coro_transfer_args ta;
1565 { 1700
1566 SV *prev = SvRV (coro_current);
1567 prepare_schedule (aTHX_ ta); 1701 prepare_cede (aTHX_ &ta);
1568 api_ready (prev); 1702
1703 if (expect_true (ta.prev != ta.next))
1704 {
1705 TRANSFER (ta, 1);
1569 return 1; 1706 return 1;
1570 } 1707 }
1571 else 1708 else
1572 return 0; 1709 return 0;
1573} 1710}
1574 1711
1575static void
1576api_schedule (void)
1577{
1578 dTHX;
1579 struct transfer_args ta;
1580
1581 prepare_schedule (aTHX_ &ta);
1582 TRANSFER (ta, 1);
1583}
1584
1585static int 1712static int
1586api_cede (void) 1713api_cede_notself (pTHX)
1587{ 1714{
1588 dTHX; 1715 if (coro_nready)
1716 {
1589 struct transfer_args ta; 1717 struct coro_transfer_args ta;
1590 1718
1591 prepare_cede (aTHX_ &ta); 1719 prepare_cede_notself (aTHX_ &ta);
1592
1593 if (expect_true (ta.prev != ta.next))
1594 {
1595 TRANSFER (ta, 1); 1720 TRANSFER (ta, 1);
1596 return 1; 1721 return 1;
1597 } 1722 }
1598 else 1723 else
1599 return 0; 1724 return 0;
1600} 1725}
1601 1726
1602static int 1727static void
1603api_cede_notself (void)
1604{
1605 dTHX;
1606 struct transfer_args ta;
1607
1608 if (prepare_cede_notself (aTHX_ &ta))
1609 {
1610 TRANSFER (ta, 1);
1611 return 1;
1612 }
1613 else
1614 return 0;
1615}
1616
1617static void
1618api_trace (SV *coro_sv, int flags) 1728api_trace (pTHX_ SV *coro_sv, int flags)
1619{ 1729{
1620 dTHX;
1621 struct coro *coro = SvSTATE (coro_sv); 1730 struct coro *coro = SvSTATE (coro_sv);
1622 1731
1623 if (flags & CC_TRACE) 1732 if (flags & CC_TRACE)
1624 { 1733 {
1625 if (!coro->cctx) 1734 if (!coro->cctx)
1626 coro->cctx = cctx_new (); 1735 coro->cctx = cctx_new_run ();
1627 else if (!(coro->cctx->flags & CC_TRACE)) 1736 else if (!(coro->cctx->flags & CC_TRACE))
1628 croak ("cannot enable tracing on coroutine with custom stack"); 1737 croak ("cannot enable tracing on coroutine with custom stack,");
1629 1738
1630 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1739 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1631 } 1740 }
1632 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1741 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1633 { 1742 {
… …
1638 else 1747 else
1639 coro->slot->runops = RUNOPS_DEFAULT; 1748 coro->slot->runops = RUNOPS_DEFAULT;
1640 } 1749 }
1641} 1750}
1642 1751
1752/*****************************************************************************/
1753/* async pool handler */
1754
1643static int 1755static int
1644coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1756slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1645{ 1757{
1646 AV *padlist; 1758 HV *hv = (HV *)SvRV (coro_current);
1647 AV *av = (AV *)mg->mg_obj; 1759 struct coro *coro = (struct coro *)frame->data;
1648 1760
1649 abort (); 1761 if (!coro->invoke_cb)
1762 return 1; /* loop till we have invoke */
1763 else
1764 {
1765 hv_store (hv, "desc", sizeof ("desc") - 1,
1766 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1767
1768 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1769
1770 {
1771 dSP;
1772 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1773 PUTBACK;
1774 }
1775
1776 SvREFCNT_dec (GvAV (PL_defgv));
1777 GvAV (PL_defgv) = coro->invoke_av;
1778 coro->invoke_av = 0;
1779
1780 return 0;
1781 }
1782}
1783
1784static void
1785slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1786{
1787 HV *hv = (HV *)SvRV (coro_current);
1788 struct coro *coro = SvSTATE_hv ((SV *)hv);
1789
1790 if (expect_true (coro->saved_deffh))
1791 {
1792 /* subsequent iteration */
1793 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1794 coro->saved_deffh = 0;
1795
1796 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1797 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1798 {
1799 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1800 coro->invoke_av = newAV ();
1801
1802 frame->prepare = prepare_nop;
1803 }
1804 else
1805 {
1806 av_clear (GvAV (PL_defgv));
1807 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1808
1809 coro->prio = 0;
1810
1811 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1812 api_trace (aTHX_ coro_current, 0);
1813
1814 frame->prepare = prepare_schedule;
1815 av_push (av_async_pool, SvREFCNT_inc (hv));
1816 }
1817 }
1818 else
1819 {
1820 /* first iteration, simply fall through */
1821 frame->prepare = prepare_nop;
1822 }
1823
1824 frame->check = slf_check_pool_handler;
1825 frame->data = (void *)coro;
1826}
1827
1828/*****************************************************************************/
1829/* rouse callback */
1830
1831#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1832
1833static void
1834coro_rouse_callback (pTHX_ CV *cv)
1835{
1836 dXSARGS;
1837 SV *data = (SV *)GENSUB_ARG;
1838
1839 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1840 {
1841 /* first call, set args */
1842 AV *av = newAV ();
1843 SV *coro = SvRV (data);
1844
1845 SvRV_set (data, (SV *)av);
1846 api_ready (aTHX_ coro);
1847 SvREFCNT_dec (coro);
1848
1849 /* better take a full copy of the arguments */
1850 while (items--)
1851 av_store (av, items, newSVsv (ST (items)));
1852 }
1853
1854 XSRETURN_EMPTY;
1855}
1856
1857static int
1858slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1859{
1860 SV *data = (SV *)frame->data;
1861
1862 if (CORO_THROW)
1863 return 0;
1864
1865 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1866 return 1;
1867
1868 /* now push all results on the stack */
1869 {
1870 dSP;
1871 AV *av = (AV *)SvRV (data);
1872 int i;
1873
1874 EXTEND (SP, AvFILLp (av) + 1);
1875 for (i = 0; i <= AvFILLp (av); ++i)
1876 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1877
1878 /* we have stolen the elements, so ste length to zero and free */
1879 AvFILLp (av) = -1;
1880 av_undef (av);
1881
1882 PUTBACK;
1883 }
1650 1884
1651 return 0; 1885 return 0;
1652} 1886}
1653 1887
1654static MGVTBL coro_gensub_vtbl = { 1888static void
1655 0, 0, 0, 0, 1889slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1656 coro_gensub_free 1890{
1657}; 1891 SV *cb;
1892
1893 if (items)
1894 cb = arg [0];
1895 else
1896 {
1897 struct coro *coro = SvSTATE_current;
1898
1899 if (!coro->rouse_cb)
1900 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1901
1902 cb = sv_2mortal (coro->rouse_cb);
1903 coro->rouse_cb = 0;
1904 }
1905
1906 if (!SvROK (cb)
1907 || SvTYPE (SvRV (cb)) != SVt_PVCV
1908 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1909 croak ("Coro::rouse_wait called with illegal callback argument,");
1910
1911 {
1912 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1913 SV *data = (SV *)GENSUB_ARG;
1914
1915 frame->data = (void *)data;
1916 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1917 frame->check = slf_check_rouse_wait;
1918 }
1919}
1920
1921static SV *
1922coro_new_rouse_cb (pTHX)
1923{
1924 HV *hv = (HV *)SvRV (coro_current);
1925 struct coro *coro = SvSTATE_hv (hv);
1926 SV *data = newRV_inc ((SV *)hv);
1927 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1928
1929 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1930 SvREFCNT_dec (data); /* magicext increases the refcount */
1931
1932 SvREFCNT_dec (coro->rouse_cb);
1933 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1934
1935 return cb;
1936}
1937
1938/*****************************************************************************/
1939/* schedule-like-function opcode (SLF) */
1940
1941static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1942static const CV *slf_cv;
1943static SV **slf_argv;
1944static int slf_argc, slf_arga; /* count, allocated */
1945static I32 slf_ax; /* top of stack, for restore */
1946
1947/* this restores the stack in the case we patched the entersub, to */
1948/* recreate the stack frame as perl will on following calls */
1949/* since entersub cleared the stack */
1950static OP *
1951pp_restore (pTHX)
1952{
1953 int i;
1954 SV **SP = PL_stack_base + slf_ax;
1955
1956 PUSHMARK (SP);
1957
1958 EXTEND (SP, slf_argc + 1);
1959
1960 for (i = 0; i < slf_argc; ++i)
1961 PUSHs (sv_2mortal (slf_argv [i]));
1962
1963 PUSHs ((SV *)CvGV (slf_cv));
1964
1965 RETURNOP (slf_restore.op_first);
1966}
1967
1968static void
1969slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1970{
1971 SV **arg = (SV **)slf_frame.data;
1972
1973 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1974}
1975
1976static void
1977slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1978{
1979 if (items != 2)
1980 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1981
1982 frame->prepare = slf_prepare_transfer;
1983 frame->check = slf_check_nop;
1984 frame->data = (void *)arg; /* let's hope it will stay valid */
1985}
1986
1987static void
1988slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1989{
1990 frame->prepare = prepare_schedule;
1991 frame->check = slf_check_nop;
1992}
1993
1994static void
1995slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1996{
1997 frame->prepare = prepare_cede;
1998 frame->check = slf_check_nop;
1999}
2000
2001static void
2002slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2003{
2004 frame->prepare = prepare_cede_notself;
2005 frame->check = slf_check_nop;
2006}
2007
2008/*
2009 * these not obviously related functions are all rolled into one
2010 * function to increase chances that they all will call transfer with the same
2011 * stack offset
2012 * SLF stands for "schedule-like-function".
2013 */
2014static OP *
2015pp_slf (pTHX)
2016{
2017 I32 checkmark; /* mark SP to see how many elements check has pushed */
2018
2019 /* set up the slf frame, unless it has already been set-up */
2020 /* the latter happens when a new coro has been started */
2021 /* or when a new cctx was attached to an existing coroutine */
2022 if (expect_true (!slf_frame.prepare))
2023 {
2024 /* first iteration */
2025 dSP;
2026 SV **arg = PL_stack_base + TOPMARK + 1;
2027 int items = SP - arg; /* args without function object */
2028 SV *gv = *sp;
2029
2030 /* do a quick consistency check on the "function" object, and if it isn't */
2031 /* for us, divert to the real entersub */
2032 if (SvTYPE (gv) != SVt_PVGV
2033 || !GvCV (gv)
2034 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2035 return PL_ppaddr[OP_ENTERSUB](aTHX);
2036
2037 if (!(PL_op->op_flags & OPf_STACKED))
2038 {
2039 /* ampersand-form of call, use @_ instead of stack */
2040 AV *av = GvAV (PL_defgv);
2041 arg = AvARRAY (av);
2042 items = AvFILLp (av) + 1;
2043 }
2044
2045 /* now call the init function, which needs to set up slf_frame */
2046 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2047 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2048
2049 /* pop args */
2050 SP = PL_stack_base + POPMARK;
2051
2052 PUTBACK;
2053 }
2054
2055 /* now that we have a slf_frame, interpret it! */
2056 /* we use a callback system not to make the code needlessly */
2057 /* complicated, but so we can run multiple perl coros from one cctx */
2058
2059 do
2060 {
2061 struct coro_transfer_args ta;
2062
2063 slf_frame.prepare (aTHX_ &ta);
2064 TRANSFER (ta, 0);
2065
2066 checkmark = PL_stack_sp - PL_stack_base;
2067 }
2068 while (slf_frame.check (aTHX_ &slf_frame));
2069
2070 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2071
2072 /* exception handling */
2073 if (expect_false (CORO_THROW))
2074 {
2075 SV *exception = sv_2mortal (CORO_THROW);
2076
2077 CORO_THROW = 0;
2078 sv_setsv (ERRSV, exception);
2079 croak (0);
2080 }
2081
2082 /* return value handling - mostly like entersub */
2083 /* make sure we put something on the stack in scalar context */
2084 if (GIMME_V == G_SCALAR)
2085 {
2086 dSP;
2087 SV **bot = PL_stack_base + checkmark;
2088
2089 if (sp == bot) /* too few, push undef */
2090 bot [1] = &PL_sv_undef;
2091 else if (sp != bot + 1) /* too many, take last one */
2092 bot [1] = *sp;
2093
2094 SP = bot + 1;
2095
2096 PUTBACK;
2097 }
2098
2099 return NORMAL;
2100}
2101
2102static void
2103api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2104{
2105 int i;
2106 SV **arg = PL_stack_base + ax;
2107 int items = PL_stack_sp - arg + 1;
2108
2109 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2110
2111 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2112 && PL_op->op_ppaddr != pp_slf)
2113 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2114
2115 CvFLAGS (cv) |= CVf_SLF;
2116 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2117 slf_cv = cv;
2118
2119 /* we patch the op, and then re-run the whole call */
2120 /* we have to put the same argument on the stack for this to work */
2121 /* and this will be done by pp_restore */
2122 slf_restore.op_next = (OP *)&slf_restore;
2123 slf_restore.op_type = OP_CUSTOM;
2124 slf_restore.op_ppaddr = pp_restore;
2125 slf_restore.op_first = PL_op;
2126
2127 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2128
2129 if (PL_op->op_flags & OPf_STACKED)
2130 {
2131 if (items > slf_arga)
2132 {
2133 slf_arga = items;
2134 free (slf_argv);
2135 slf_argv = malloc (slf_arga * sizeof (SV *));
2136 }
2137
2138 slf_argc = items;
2139
2140 for (i = 0; i < items; ++i)
2141 slf_argv [i] = SvREFCNT_inc (arg [i]);
2142 }
2143 else
2144 slf_argc = 0;
2145
2146 PL_op->op_ppaddr = pp_slf;
2147 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2148
2149 PL_op = (OP *)&slf_restore;
2150}
1658 2151
1659/*****************************************************************************/ 2152/*****************************************************************************/
1660/* PerlIO::cede */ 2153/* PerlIO::cede */
1661 2154
1662typedef struct 2155typedef struct
… …
1690 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2183 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1691 double now = nvtime (); 2184 double now = nvtime ();
1692 2185
1693 if (now >= self->next) 2186 if (now >= self->next)
1694 { 2187 {
1695 api_cede (); 2188 api_cede (aTHX);
1696 self->next = now + self->every; 2189 self->next = now + self->every;
1697 } 2190 }
1698 2191
1699 return PerlIOBuf_flush (aTHX_ f); 2192 return PerlIOBuf_flush (aTHX_ f);
1700} 2193}
… …
1729 PerlIOBuf_get_ptr, 2222 PerlIOBuf_get_ptr,
1730 PerlIOBuf_get_cnt, 2223 PerlIOBuf_get_cnt,
1731 PerlIOBuf_set_ptrcnt, 2224 PerlIOBuf_set_ptrcnt,
1732}; 2225};
1733 2226
2227/*****************************************************************************/
2228/* Coro::Semaphore & Coro::Signal */
2229
2230static SV *
2231coro_waitarray_new (pTHX_ int count)
2232{
2233 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2234 AV *av = newAV ();
2235 SV **ary;
2236
2237 /* unfortunately, building manually saves memory */
2238 Newx (ary, 2, SV *);
2239 AvALLOC (av) = ary;
2240 /*AvARRAY (av) = ary;*/
2241 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2242 AvMAX (av) = 1;
2243 AvFILLp (av) = 0;
2244 ary [0] = newSViv (count);
2245
2246 return newRV_noinc ((SV *)av);
2247}
2248
2249/* semaphore */
2250
2251static void
2252coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2253{
2254 SV *count_sv = AvARRAY (av)[0];
2255 IV count = SvIVX (count_sv);
2256
2257 count += adjust;
2258 SvIVX (count_sv) = count;
2259
2260 /* now wake up as many waiters as are expected to lock */
2261 while (count > 0 && AvFILLp (av) > 0)
2262 {
2263 SV *cb;
2264
2265 /* swap first two elements so we can shift a waiter */
2266 AvARRAY (av)[0] = AvARRAY (av)[1];
2267 AvARRAY (av)[1] = count_sv;
2268 cb = av_shift (av);
2269
2270 if (SvOBJECT (cb))
2271 {
2272 api_ready (aTHX_ cb);
2273 --count;
2274 }
2275 else if (SvTYPE (cb) == SVt_PVCV)
2276 {
2277 dSP;
2278 PUSHMARK (SP);
2279 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2280 PUTBACK;
2281 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2282 }
2283
2284 SvREFCNT_dec (cb);
2285 }
2286}
2287
2288static void
2289coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2290{
2291 /* call $sem->adjust (0) to possibly wake up some other waiters */
2292 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2293}
2294
2295static int
2296slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2297{
2298 AV *av = (AV *)frame->data;
2299 SV *count_sv = AvARRAY (av)[0];
2300
2301 /* if we are about to throw, don't actually acquire the lock, just throw */
2302 if (CORO_THROW)
2303 return 0;
2304 else if (SvIVX (count_sv) > 0)
2305 {
2306 SvSTATE_current->on_destroy = 0;
2307
2308 if (acquire)
2309 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2310 else
2311 coro_semaphore_adjust (aTHX_ av, 0);
2312
2313 return 0;
2314 }
2315 else
2316 {
2317 int i;
2318 /* if we were woken up but can't down, we look through the whole */
2319 /* waiters list and only add us if we aren't in there already */
2320 /* this avoids some degenerate memory usage cases */
2321
2322 for (i = 1; i <= AvFILLp (av); ++i)
2323 if (AvARRAY (av)[i] == SvRV (coro_current))
2324 return 1;
2325
2326 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2327 return 1;
2328 }
2329}
2330
2331static int
2332slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2333{
2334 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2335}
2336
2337static int
2338slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2339{
2340 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2341}
2342
2343static void
2344slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2345{
2346 AV *av = (AV *)SvRV (arg [0]);
2347
2348 if (SvIVX (AvARRAY (av)[0]) > 0)
2349 {
2350 frame->data = (void *)av;
2351 frame->prepare = prepare_nop;
2352 }
2353 else
2354 {
2355 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2356
2357 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2358 frame->prepare = prepare_schedule;
2359
2360 /* to avoid race conditions when a woken-up coro gets terminated */
2361 /* we arrange for a temporary on_destroy that calls adjust (0) */
2362 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2363 }
2364}
2365
2366static void
2367slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2368{
2369 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2370 frame->check = slf_check_semaphore_down;
2371}
2372
2373static void
2374slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2375{
2376 if (items >= 2)
2377 {
2378 /* callback form */
2379 AV *av = (AV *)SvRV (arg [0]);
2380 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2381
2382 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2383
2384 if (SvIVX (AvARRAY (av)[0]) > 0)
2385 coro_semaphore_adjust (aTHX_ av, 0);
2386
2387 frame->prepare = prepare_nop;
2388 frame->check = slf_check_nop;
2389 }
2390 else
2391 {
2392 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2393 frame->check = slf_check_semaphore_wait;
2394 }
2395}
2396
2397/* signal */
2398
2399static void
2400coro_signal_wake (pTHX_ AV *av, int count)
2401{
2402 SvIVX (AvARRAY (av)[0]) = 0;
2403
2404 /* now signal count waiters */
2405 while (count > 0 && AvFILLp (av) > 0)
2406 {
2407 SV *cb;
2408
2409 /* swap first two elements so we can shift a waiter */
2410 cb = AvARRAY (av)[0];
2411 AvARRAY (av)[0] = AvARRAY (av)[1];
2412 AvARRAY (av)[1] = cb;
2413
2414 cb = av_shift (av);
2415
2416 api_ready (aTHX_ cb);
2417 sv_setiv (cb, 0); /* signal waiter */
2418 SvREFCNT_dec (cb);
2419
2420 --count;
2421 }
2422}
2423
2424static int
2425slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2426{
2427 /* if we are about to throw, also stop waiting */
2428 return SvROK ((SV *)frame->data) && !CORO_THROW;
2429}
2430
2431static void
2432slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2433{
2434 AV *av = (AV *)SvRV (arg [0]);
2435
2436 if (SvIVX (AvARRAY (av)[0]))
2437 {
2438 SvIVX (AvARRAY (av)[0]) = 0;
2439 frame->prepare = prepare_nop;
2440 frame->check = slf_check_nop;
2441 }
2442 else
2443 {
2444 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2445
2446 av_push (av, waiter);
2447
2448 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2449 frame->prepare = prepare_schedule;
2450 frame->check = slf_check_signal_wait;
2451 }
2452}
2453
2454/*****************************************************************************/
2455/* Coro::AIO */
2456
2457#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2458
2459/* helper storage struct */
2460struct io_state
2461{
2462 int errorno;
2463 I32 laststype; /* U16 in 5.10.0 */
2464 int laststatval;
2465 Stat_t statcache;
2466};
2467
2468static void
2469coro_aio_callback (pTHX_ CV *cv)
2470{
2471 dXSARGS;
2472 AV *state = (AV *)GENSUB_ARG;
2473 SV *coro = av_pop (state);
2474 SV *data_sv = newSV (sizeof (struct io_state));
2475
2476 av_extend (state, items - 1);
2477
2478 sv_upgrade (data_sv, SVt_PV);
2479 SvCUR_set (data_sv, sizeof (struct io_state));
2480 SvPOK_only (data_sv);
2481
2482 {
2483 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2484
2485 data->errorno = errno;
2486 data->laststype = PL_laststype;
2487 data->laststatval = PL_laststatval;
2488 data->statcache = PL_statcache;
2489 }
2490
2491 /* now build the result vector out of all the parameters and the data_sv */
2492 {
2493 int i;
2494
2495 for (i = 0; i < items; ++i)
2496 av_push (state, SvREFCNT_inc_NN (ST (i)));
2497 }
2498
2499 av_push (state, data_sv);
2500
2501 api_ready (aTHX_ coro);
2502 SvREFCNT_dec (coro);
2503 SvREFCNT_dec ((AV *)state);
2504}
2505
2506static int
2507slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2508{
2509 AV *state = (AV *)frame->data;
2510
2511 /* if we are about to throw, return early */
2512 /* this does not cancel the aio request, but at least */
2513 /* it quickly returns */
2514 if (CORO_THROW)
2515 return 0;
2516
2517 /* one element that is an RV? repeat! */
2518 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2519 return 1;
2520
2521 /* restore status */
2522 {
2523 SV *data_sv = av_pop (state);
2524 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2525
2526 errno = data->errorno;
2527 PL_laststype = data->laststype;
2528 PL_laststatval = data->laststatval;
2529 PL_statcache = data->statcache;
2530
2531 SvREFCNT_dec (data_sv);
2532 }
2533
2534 /* push result values */
2535 {
2536 dSP;
2537 int i;
2538
2539 EXTEND (SP, AvFILLp (state) + 1);
2540 for (i = 0; i <= AvFILLp (state); ++i)
2541 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2542
2543 PUTBACK;
2544 }
2545
2546 return 0;
2547}
2548
2549static void
2550slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2551{
2552 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2553 SV *coro_hv = SvRV (coro_current);
2554 struct coro *coro = SvSTATE_hv (coro_hv);
2555
2556 /* put our coroutine id on the state arg */
2557 av_push (state, SvREFCNT_inc_NN (coro_hv));
2558
2559 /* first see whether we have a non-zero priority and set it as AIO prio */
2560 if (coro->prio)
2561 {
2562 dSP;
2563
2564 static SV *prio_cv;
2565 static SV *prio_sv;
2566
2567 if (expect_false (!prio_cv))
2568 {
2569 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2570 prio_sv = newSViv (0);
2571 }
2572
2573 PUSHMARK (SP);
2574 sv_setiv (prio_sv, coro->prio);
2575 XPUSHs (prio_sv);
2576
2577 PUTBACK;
2578 call_sv (prio_cv, G_VOID | G_DISCARD);
2579 }
2580
2581 /* now call the original request */
2582 {
2583 dSP;
2584 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2585 int i;
2586
2587 PUSHMARK (SP);
2588
2589 /* first push all args to the stack */
2590 EXTEND (SP, items + 1);
2591
2592 for (i = 0; i < items; ++i)
2593 PUSHs (arg [i]);
2594
2595 /* now push the callback closure */
2596 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2597
2598 /* now call the AIO function - we assume our request is uncancelable */
2599 PUTBACK;
2600 call_sv ((SV *)req, G_VOID | G_DISCARD);
2601 }
2602
2603 /* now that the requets is going, we loop toll we have a result */
2604 frame->data = (void *)state;
2605 frame->prepare = prepare_schedule;
2606 frame->check = slf_check_aio_req;
2607}
2608
2609static void
2610coro_aio_req_xs (pTHX_ CV *cv)
2611{
2612 dXSARGS;
2613
2614 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2615
2616 XSRETURN_EMPTY;
2617}
2618
2619/*****************************************************************************/
1734 2620
1735MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2621MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1736 2622
1737PROTOTYPES: DISABLE 2623PROTOTYPES: DISABLE
1738 2624
1739BOOT: 2625BOOT:
1740{ 2626{
1741#ifdef USE_ITHREADS 2627#ifdef USE_ITHREADS
1742 MUTEX_INIT (&coro_mutex); 2628# if CORO_PTHREAD
2629 coro_thx = PERL_GET_CONTEXT;
2630# endif
1743#endif 2631#endif
1744 BOOT_PAGESIZE; 2632 BOOT_PAGESIZE;
1745 2633
1746 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2634 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1747 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2635 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
1765 main_top_env = PL_top_env; 2653 main_top_env = PL_top_env;
1766 2654
1767 while (main_top_env->je_prev) 2655 while (main_top_env->je_prev)
1768 main_top_env = main_top_env->je_prev; 2656 main_top_env = main_top_env->je_prev;
1769 2657
2658 {
2659 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2660
2661 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2662 hv_store_ent (PL_custom_op_names, slf,
2663 newSVpv ("coro_slf", 0), 0);
2664
2665 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2666 hv_store_ent (PL_custom_op_descs, slf,
2667 newSVpv ("coro schedule like function", 0), 0);
2668 }
2669
1770 coroapi.ver = CORO_API_VERSION; 2670 coroapi.ver = CORO_API_VERSION;
1771 coroapi.rev = CORO_API_REVISION; 2671 coroapi.rev = CORO_API_REVISION;
2672
1772 coroapi.transfer = api_transfer; 2673 coroapi.transfer = api_transfer;
2674
2675 coroapi.sv_state = SvSTATE_;
2676 coroapi.execute_slf = api_execute_slf;
2677 coroapi.prepare_nop = prepare_nop;
2678 coroapi.prepare_schedule = prepare_schedule;
2679 coroapi.prepare_cede = prepare_cede;
2680 coroapi.prepare_cede_notself = prepare_cede_notself;
1773 2681
1774 { 2682 {
1775 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2683 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1776 2684
1777 if (!svp) croak ("Time::HiRes is required"); 2685 if (!svp) croak ("Time::HiRes is required");
… …
1783 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2691 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1784} 2692}
1785 2693
1786SV * 2694SV *
1787new (char *klass, ...) 2695new (char *klass, ...)
2696 ALIAS:
2697 Coro::new = 1
1788 CODE: 2698 CODE:
1789{ 2699{
1790 struct coro *coro; 2700 struct coro *coro;
1791 MAGIC *mg; 2701 MAGIC *mg;
1792 HV *hv; 2702 HV *hv;
2703 CV *cb;
1793 int i; 2704 int i;
2705
2706 if (items > 1)
2707 {
2708 cb = coro_sv_2cv (aTHX_ ST (1));
2709
2710 if (!ix)
2711 {
2712 if (CvISXSUB (cb))
2713 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2714
2715 if (!CvROOT (cb))
2716 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2717 }
2718 }
1794 2719
1795 Newz (0, coro, 1, struct coro); 2720 Newz (0, coro, 1, struct coro);
1796 coro->args = newAV (); 2721 coro->args = newAV ();
1797 coro->flags = CF_NEW; 2722 coro->flags = CF_NEW;
1798 2723
… …
1803 coro->hv = hv = newHV (); 2728 coro->hv = hv = newHV ();
1804 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2729 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1805 mg->mg_flags |= MGf_DUP; 2730 mg->mg_flags |= MGf_DUP;
1806 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2731 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1807 2732
2733 if (items > 1)
2734 {
1808 av_extend (coro->args, items - 1); 2735 av_extend (coro->args, items - 1 + ix - 1);
2736
2737 if (ix)
2738 {
2739 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2740 cb = cv_coro_run;
2741 }
2742
2743 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2744
1809 for (i = 1; i < items; i++) 2745 for (i = 2; i < items; i++)
1810 av_push (coro->args, newSVsv (ST (i))); 2746 av_push (coro->args, newSVsv (ST (i)));
2747 }
1811} 2748}
1812 OUTPUT: 2749 OUTPUT:
1813 RETVAL 2750 RETVAL
1814 2751
1815# these not obviously related functions are all rolled into the same xs
1816# function to increase chances that they all will call transfer with the same
1817# stack offset
1818void 2752void
1819_set_stacklevel (...) 2753transfer (...)
1820 ALIAS: 2754 PROTOTYPE: $$
1821 Coro::State::transfer = 1 2755 CODE:
1822 Coro::schedule = 2 2756 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1823 Coro::cede = 3
1824 Coro::cede_notself = 4
1825 CODE:
1826{
1827 struct transfer_args ta;
1828
1829 PUTBACK;
1830 switch (ix)
1831 {
1832 case 0:
1833 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1834 ta.next = 0;
1835 break;
1836
1837 case 1:
1838 if (items != 2)
1839 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1840
1841 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1842 break;
1843
1844 case 2:
1845 prepare_schedule (aTHX_ &ta);
1846 break;
1847
1848 case 3:
1849 prepare_cede (aTHX_ &ta);
1850 break;
1851
1852 case 4:
1853 if (!prepare_cede_notself (aTHX_ &ta))
1854 XSRETURN_EMPTY;
1855
1856 break;
1857 }
1858 SPAGAIN;
1859
1860 BARRIER;
1861 PUTBACK;
1862 TRANSFER (ta, 0);
1863 SPAGAIN; /* might be the sp of a different coroutine now */
1864 /* be extra careful not to ever do anything after TRANSFER */
1865}
1866 2757
1867bool 2758bool
1868_destroy (SV *coro_sv) 2759_destroy (SV *coro_sv)
1869 CODE: 2760 CODE:
1870 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2761 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1877 CODE: 2768 CODE:
1878 _exit (code); 2769 _exit (code);
1879 2770
1880int 2771int
1881cctx_stacksize (int new_stacksize = 0) 2772cctx_stacksize (int new_stacksize = 0)
2773 PROTOTYPE: ;$
1882 CODE: 2774 CODE:
1883 RETVAL = coro_stacksize; 2775 RETVAL = cctx_stacksize;
1884 if (new_stacksize) 2776 if (new_stacksize)
2777 {
1885 coro_stacksize = new_stacksize; 2778 cctx_stacksize = new_stacksize;
2779 ++cctx_gen;
2780 }
1886 OUTPUT: 2781 OUTPUT:
1887 RETVAL 2782 RETVAL
1888 2783
1889int 2784int
2785cctx_max_idle (int max_idle = 0)
2786 PROTOTYPE: ;$
2787 CODE:
2788 RETVAL = cctx_max_idle;
2789 if (max_idle > 1)
2790 cctx_max_idle = max_idle;
2791 OUTPUT:
2792 RETVAL
2793
2794int
1890cctx_count () 2795cctx_count ()
2796 PROTOTYPE:
1891 CODE: 2797 CODE:
1892 RETVAL = cctx_count; 2798 RETVAL = cctx_count;
1893 OUTPUT: 2799 OUTPUT:
1894 RETVAL 2800 RETVAL
1895 2801
1896int 2802int
1897cctx_idle () 2803cctx_idle ()
2804 PROTOTYPE:
1898 CODE: 2805 CODE:
1899 RETVAL = cctx_idle; 2806 RETVAL = cctx_idle;
1900 OUTPUT: 2807 OUTPUT:
1901 RETVAL 2808 RETVAL
1902 2809
1903void 2810void
1904list () 2811list ()
2812 PROTOTYPE:
1905 PPCODE: 2813 PPCODE:
1906{ 2814{
1907 struct coro *coro; 2815 struct coro *coro;
1908 for (coro = coro_first; coro; coro = coro->next) 2816 for (coro = coro_first; coro; coro = coro->next)
1909 if (coro->hv) 2817 if (coro->hv)
… …
1968 RETVAL = boolSV (coro->flags & ix); 2876 RETVAL = boolSV (coro->flags & ix);
1969 OUTPUT: 2877 OUTPUT:
1970 RETVAL 2878 RETVAL
1971 2879
1972void 2880void
2881throw (Coro::State self, SV *throw = &PL_sv_undef)
2882 PROTOTYPE: $;$
2883 CODE:
2884{
2885 struct coro *current = SvSTATE_current;
2886 SV **throwp = self == current ? &CORO_THROW : &self->except;
2887 SvREFCNT_dec (*throwp);
2888 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2889}
2890
2891void
1973api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2892api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2893 PROTOTYPE: $;$
2894 C_ARGS: aTHX_ coro, flags
1974 2895
1975SV * 2896SV *
1976has_cctx (Coro::State coro) 2897has_cctx (Coro::State coro)
1977 PROTOTYPE: $ 2898 PROTOTYPE: $
1978 CODE: 2899 CODE:
… …
1986 CODE: 2907 CODE:
1987 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2908 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1988 OUTPUT: 2909 OUTPUT:
1989 RETVAL 2910 RETVAL
1990 2911
1991IV 2912UV
1992rss (Coro::State coro) 2913rss (Coro::State coro)
1993 PROTOTYPE: $ 2914 PROTOTYPE: $
1994 ALIAS: 2915 ALIAS:
1995 usecount = 1 2916 usecount = 1
1996 CODE: 2917 CODE:
… …
2002 OUTPUT: 2923 OUTPUT:
2003 RETVAL 2924 RETVAL
2004 2925
2005void 2926void
2006force_cctx () 2927force_cctx ()
2928 PROTOTYPE:
2007 CODE: 2929 CODE:
2008 struct coro *coro = SvSTATE (coro_current);
2009 coro->cctx->idle_sp = 0; 2930 SvSTATE_current->cctx->idle_sp = 0;
2010 2931
2011void 2932void
2012swap_defsv (Coro::State self) 2933swap_defsv (Coro::State self)
2013 PROTOTYPE: $ 2934 PROTOTYPE: $
2014 ALIAS: 2935 ALIAS:
2015 swap_defav = 1 2936 swap_defav = 1
2016 CODE: 2937 CODE:
2017 if (!self->slot) 2938 if (!self->slot)
2018 croak ("cannot swap state with coroutine that has no saved state"); 2939 croak ("cannot swap state with coroutine that has no saved state,");
2019 else 2940 else
2020 { 2941 {
2021 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2942 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2022 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2943 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2023 2944
2024 SV *tmp = *src; *src = *dst; *dst = tmp; 2945 SV *tmp = *src; *src = *dst; *dst = tmp;
2025 } 2946 }
2026 2947
2948
2027MODULE = Coro::State PACKAGE = Coro 2949MODULE = Coro::State PACKAGE = Coro
2028 2950
2029BOOT: 2951BOOT:
2030{ 2952{
2031 int i; 2953 int i;
2032 2954
2033 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2955 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2034 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2956 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2035 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2957 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2036 2958 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2959 cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);
2037 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2960 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2038 SvREADONLY_on (coro_current); 2961 SvREADONLY_on (coro_current);
2962
2963 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2964 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2965 cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler);
2966 cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new);
2039 2967
2040 coro_stash = gv_stashpv ("Coro", TRUE); 2968 coro_stash = gv_stashpv ("Coro", TRUE);
2041 2969
2042 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2970 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2043 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2971 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2048 2976
2049 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2977 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2050 coro_ready[i] = newAV (); 2978 coro_ready[i] = newAV ();
2051 2979
2052 { 2980 {
2053 SV *sv = perl_get_sv ("Coro::API", TRUE); 2981 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2054 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2055 2982
2056 coroapi.schedule = api_schedule; 2983 coroapi.schedule = api_schedule;
2057 coroapi.cede = api_cede; 2984 coroapi.cede = api_cede;
2058 coroapi.cede_notself = api_cede_notself; 2985 coroapi.cede_notself = api_cede_notself;
2059 coroapi.ready = api_ready; 2986 coroapi.ready = api_ready;
2060 coroapi.is_ready = api_is_ready; 2987 coroapi.is_ready = api_is_ready;
2061 coroapi.nready = &coro_nready; 2988 coroapi.nready = coro_nready;
2062 coroapi.current = coro_current; 2989 coroapi.current = coro_current;
2063 2990
2064 GCoroAPI = &coroapi; 2991 /*GCoroAPI = &coroapi;*/
2065 sv_setiv (sv, (IV)&coroapi); 2992 sv_setiv (sv, (IV)&coroapi);
2066 SvREADONLY_on (sv); 2993 SvREADONLY_on (sv);
2067 } 2994 }
2068} 2995}
2996
2997void
2998schedule (...)
2999 CODE:
3000 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3001
3002void
3003cede (...)
3004 CODE:
3005 CORO_EXECUTE_SLF_XS (slf_init_cede);
3006
3007void
3008cede_notself (...)
3009 CODE:
3010 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2069 3011
2070void 3012void
2071_set_current (SV *current) 3013_set_current (SV *current)
2072 PROTOTYPE: $ 3014 PROTOTYPE: $
2073 CODE: 3015 CODE:
… …
2076 3018
2077void 3019void
2078_set_readyhook (SV *hook) 3020_set_readyhook (SV *hook)
2079 PROTOTYPE: $ 3021 PROTOTYPE: $
2080 CODE: 3022 CODE:
2081 LOCK;
2082 SvREFCNT_dec (coro_readyhook); 3023 SvREFCNT_dec (coro_readyhook);
2083 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3024 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2084 UNLOCK;
2085 3025
2086int 3026int
2087prio (Coro::State coro, int newprio = 0) 3027prio (Coro::State coro, int newprio = 0)
3028 PROTOTYPE: $;$
2088 ALIAS: 3029 ALIAS:
2089 nice = 1 3030 nice = 1
2090 CODE: 3031 CODE:
2091{ 3032{
2092 RETVAL = coro->prio; 3033 RETVAL = coro->prio;
… …
2107 3048
2108SV * 3049SV *
2109ready (SV *self) 3050ready (SV *self)
2110 PROTOTYPE: $ 3051 PROTOTYPE: $
2111 CODE: 3052 CODE:
2112 RETVAL = boolSV (api_ready (self)); 3053 RETVAL = boolSV (api_ready (aTHX_ self));
2113 OUTPUT: 3054 OUTPUT:
2114 RETVAL 3055 RETVAL
2115 3056
2116int 3057int
2117nready (...) 3058nready (...)
… …
2120 RETVAL = coro_nready; 3061 RETVAL = coro_nready;
2121 OUTPUT: 3062 OUTPUT:
2122 RETVAL 3063 RETVAL
2123 3064
2124void 3065void
2125throw (Coro::State self, SV *throw = &PL_sv_undef) 3066_pool_handler (...)
2126 PROTOTYPE: $;$ 3067 CODE:
2127 CODE: 3068 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2128 SvREFCNT_dec (self->throw);
2129 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2130 3069
2131# for async_pool speedup
2132void 3070void
2133_pool_1 (SV *cb) 3071async_pool (SV *cv, ...)
3072 PROTOTYPE: &@
3073 PPCODE:
3074{
3075 HV *hv = (HV *)av_pop (av_async_pool);
3076 AV *av = newAV ();
3077 SV *cb = ST (0);
3078 int i;
3079
3080 av_extend (av, items - 2);
3081 for (i = 1; i < items; ++i)
3082 av_push (av, SvREFCNT_inc_NN (ST (i)));
3083
3084 if ((SV *)hv == &PL_sv_undef)
3085 {
3086 PUSHMARK (SP);
3087 EXTEND (SP, 2);
3088 PUSHs (sv_Coro);
3089 PUSHs ((SV *)cv_pool_handler);
3090 PUTBACK;
3091 call_sv ((SV *)cv_coro_new, G_SCALAR);
3092 SPAGAIN;
3093
3094 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3095 }
3096
3097 {
3098 struct coro *coro = SvSTATE_hv (hv);
3099
3100 assert (!coro->invoke_cb);
3101 assert (!coro->invoke_av);
3102 coro->invoke_cb = SvREFCNT_inc (cb);
3103 coro->invoke_av = av;
3104 }
3105
3106 api_ready (aTHX_ (SV *)hv);
3107
3108 if (GIMME_V != G_VOID)
3109 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3110 else
3111 SvREFCNT_dec (hv);
3112}
3113
3114SV *
3115rouse_cb ()
3116 PROTOTYPE:
2134 CODE: 3117 CODE:
2135{ 3118 RETVAL = coro_new_rouse_cb (aTHX);
2136 struct coro *coro = SvSTATE (coro_current);
2137 HV *hv = (HV *)SvRV (coro_current);
2138 AV *defav = GvAV (PL_defgv);
2139 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2140 AV *invoke_av;
2141 int i, len;
2142
2143 if (!invoke)
2144 {
2145 SV *old = PL_diehook;
2146 PL_diehook = 0;
2147 SvREFCNT_dec (old);
2148 croak ("\3async_pool terminate\2\n");
2149 }
2150
2151 SvREFCNT_dec (coro->saved_deffh);
2152 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2153
2154 hv_store (hv, "desc", sizeof ("desc") - 1,
2155 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2156
2157 invoke_av = (AV *)SvRV (invoke);
2158 len = av_len (invoke_av);
2159
2160 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2161
2162 if (len > 0)
2163 {
2164 av_fill (defav, len - 1);
2165 for (i = 0; i < len; ++i)
2166 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2167 }
2168
2169 SvREFCNT_dec (invoke);
2170}
2171
2172void
2173_pool_2 (SV *cb)
2174 CODE:
2175{
2176 struct coro *coro = SvSTATE (coro_current);
2177
2178 sv_setsv (cb, &PL_sv_undef);
2179
2180 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2181 coro->saved_deffh = 0;
2182
2183 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2184 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2185 {
2186 SV *old = PL_diehook;
2187 PL_diehook = 0;
2188 SvREFCNT_dec (old);
2189 croak ("\3async_pool terminate\2\n");
2190 }
2191
2192 av_clear (GvAV (PL_defgv));
2193 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2194 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2195
2196 coro->prio = 0;
2197
2198 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2199 api_trace (coro_current, 0);
2200
2201 av_push (av_async_pool, newSVsv (coro_current));
2202}
2203
2204#if 0
2205
2206void
2207_generator_call (...)
2208 PROTOTYPE: @
2209 PPCODE:
2210 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2211 xxxx
2212 abort ();
2213
2214SV *
2215gensub (SV *sub, ...)
2216 PROTOTYPE: &;@
2217 CODE:
2218{
2219 struct coro *coro;
2220 MAGIC *mg;
2221 CV *xcv;
2222 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2223 int i;
2224
2225 CvGV (ncv) = CvGV (cv);
2226 CvFILE (ncv) = CvFILE (cv);
2227
2228 Newz (0, coro, 1, struct coro);
2229 coro->args = newAV ();
2230 coro->flags = CF_NEW;
2231
2232 av_extend (coro->args, items - 1);
2233 for (i = 1; i < items; i++)
2234 av_push (coro->args, newSVsv (ST (i)));
2235
2236 CvISXSUB_on (ncv);
2237 CvXSUBANY (ncv).any_ptr = (void *)coro;
2238
2239 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2240
2241 CvXSUB (ncv) = CvXSUB (xcv);
2242 CvANON_on (ncv);
2243
2244 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2245 RETVAL = newRV_noinc ((SV *)ncv);
2246}
2247 OUTPUT: 3119 OUTPUT:
2248 RETVAL 3120 RETVAL
2249 3121
2250#endif
2251
2252
2253MODULE = Coro::State PACKAGE = Coro::AIO
2254
2255void 3122void
2256_get_state (SV *self) 3123rouse_wait (...)
3124 PROTOTYPE: ;$
2257 PPCODE: 3125 PPCODE:
2258{ 3126 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2259 AV *defav = GvAV (PL_defgv);
2260 AV *av = newAV ();
2261 int i;
2262 SV *data_sv = newSV (sizeof (struct io_state));
2263 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2264 SvCUR_set (data_sv, sizeof (struct io_state));
2265 SvPOK_only (data_sv);
2266 3127
2267 data->errorno = errno;
2268 data->laststype = PL_laststype;
2269 data->laststatval = PL_laststatval;
2270 data->statcache = PL_statcache;
2271 3128
2272 av_extend (av, AvFILLp (defav) + 1 + 1); 3129MODULE = Coro::State PACKAGE = PerlIO::cede
2273 3130
2274 for (i = 0; i <= AvFILLp (defav); ++i) 3131BOOT:
2275 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3132 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2276 3133
2277 av_push (av, data_sv);
2278 3134
2279 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3135MODULE = Coro::State PACKAGE = Coro::Semaphore
2280 3136
2281 api_ready (self); 3137SV *
2282} 3138new (SV *klass, SV *count = 0)
3139 CODE:
3140 RETVAL = sv_bless (
3141 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3142 GvSTASH (CvGV (cv))
3143 );
3144 OUTPUT:
3145 RETVAL
3146
3147# helper for Coro::Channel
3148SV *
3149_alloc (int count)
3150 CODE:
3151 RETVAL = coro_waitarray_new (aTHX_ count);
3152 OUTPUT:
3153 RETVAL
3154
3155SV *
3156count (SV *self)
3157 CODE:
3158 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3159 OUTPUT:
3160 RETVAL
2283 3161
2284void 3162void
2285_set_state (SV *state) 3163up (SV *self, int adjust = 1)
2286 PROTOTYPE: $ 3164 ALIAS:
3165 adjust = 1
3166 CODE:
3167 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3168
3169void
3170down (...)
3171 CODE:
3172 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3173
3174void
3175wait (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3178
3179void
3180try (SV *self)
3181 PPCODE:
3182{
3183 AV *av = (AV *)SvRV (self);
3184 SV *count_sv = AvARRAY (av)[0];
3185 IV count = SvIVX (count_sv);
3186
3187 if (count > 0)
3188 {
3189 --count;
3190 SvIVX (count_sv) = count;
3191 XSRETURN_YES;
3192 }
3193 else
3194 XSRETURN_NO;
3195}
3196
3197void
3198waiters (SV *self)
3199 PPCODE:
3200{
3201 AV *av = (AV *)SvRV (self);
3202 int wcount = AvFILLp (av) + 1 - 1;
3203
3204 if (GIMME_V == G_SCALAR)
3205 XPUSHs (sv_2mortal (newSViv (wcount)));
3206 else
3207 {
3208 int i;
3209 EXTEND (SP, wcount);
3210 for (i = 1; i <= wcount; ++i)
3211 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3212 }
3213}
3214
3215MODULE = Coro::State PACKAGE = Coro::Signal
3216
3217SV *
3218new (SV *klass)
2287 PPCODE: 3219 CODE:
3220 RETVAL = sv_bless (
3221 coro_waitarray_new (aTHX_ 0),
3222 GvSTASH (CvGV (cv))
3223 );
3224 OUTPUT:
3225 RETVAL
3226
3227void
3228wait (...)
3229 CODE:
3230 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3231
3232void
3233broadcast (SV *self)
3234 CODE:
2288{ 3235{
2289 AV *av = (AV *)SvRV (state); 3236 AV *av = (AV *)SvRV (self);
2290 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3237 coro_signal_wake (aTHX_ av, AvFILLp (av));
2291 int i; 3238}
2292 3239
2293 errno = data->errorno; 3240void
2294 PL_laststype = data->laststype; 3241send (SV *self)
2295 PL_laststatval = data->laststatval; 3242 CODE:
2296 PL_statcache = data->statcache; 3243{
3244 AV *av = (AV *)SvRV (self);
2297 3245
2298 EXTEND (SP, AvFILLp (av)); 3246 if (AvFILLp (av))
2299 for (i = 0; i < AvFILLp (av); ++i) 3247 coro_signal_wake (aTHX_ av, 1);
2300 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3248 else
3249 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2301} 3250}
3251
3252IV
3253awaited (SV *self)
3254 CODE:
3255 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3256 OUTPUT:
3257 RETVAL
2302 3258
2303 3259
2304MODULE = Coro::State PACKAGE = Coro::AnyEvent 3260MODULE = Coro::State PACKAGE = Coro::AnyEvent
2305 3261
2306BOOT: 3262BOOT:
2307 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3263 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2308 3264
2309SV * 3265void
2310_schedule (...) 3266_schedule (...)
2311 PROTOTYPE: @
2312 CODE: 3267 CODE:
2313{ 3268{
2314 static int incede; 3269 static int incede;
2315 3270
2316 api_cede_notself (); 3271 api_cede_notself (aTHX);
2317 3272
2318 ++incede; 3273 ++incede;
2319 while (coro_nready >= incede && api_cede ()) 3274 while (coro_nready >= incede && api_cede (aTHX))
2320 ; 3275 ;
2321 3276
2322 sv_setsv (sv_activity, &PL_sv_undef); 3277 sv_setsv (sv_activity, &PL_sv_undef);
2323 if (coro_nready >= incede) 3278 if (coro_nready >= incede)
2324 { 3279 {
2325 PUSHMARK (SP); 3280 PUSHMARK (SP);
2326 PUTBACK; 3281 PUTBACK;
2327 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3282 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2328 SPAGAIN;
2329 } 3283 }
2330 3284
2331 --incede; 3285 --incede;
2332} 3286}
2333 3287
2334 3288
2335MODULE = Coro::State PACKAGE = PerlIO::cede 3289MODULE = Coro::State PACKAGE = Coro::AIO
2336 3290
2337BOOT: 3291void
2338 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3292_register (char *target, char *proto, SV *req)
3293 CODE:
3294{
3295 CV *req_cv = coro_sv_2cv (aTHX_ req);
3296 /* newXSproto doesn't return the CV on 5.8 */
3297 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3298 sv_setpv ((SV *)slf_cv, proto);
3299 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3300}
3301

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