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Comparing Coro/Coro/State.xs (file contents):
Revision 1.261 by root, Mon Nov 10 05:09:30 2008 UTC vs.
Revision 1.321 by root, Sat Nov 22 02:09:54 2008 UTC

1#define CORO_CLONE 1 //D
2
1#include "libcoro/coro.c" 3#include "libcoro/coro.c"
2 4
3#define PERL_NO_GET_CONTEXT 5#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 6#define PERL_EXT
5 7
… …
16 18
17#ifdef WIN32 19#ifdef WIN32
18# undef setjmp 20# undef setjmp
19# undef longjmp 21# undef longjmp
20# undef _exit 22# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 23# define setjmp _setjmp /* deep magic */
22#else 24#else
23# include <inttypes.h> /* most portable stdint.h */ 25# include <inttypes.h> /* most portable stdint.h */
24#endif 26#endif
25 27
26#ifdef HAVE_MMAP 28#ifdef HAVE_MMAP
… …
46# define BOOT_PAGESIZE (void)0 48# define BOOT_PAGESIZE (void)0
47#endif 49#endif
48 50
49#if CORO_USE_VALGRIND 51#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 52# 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 53#endif
55 54
56/* the maximum number of idle cctx that will be pooled */ 55/* the maximum number of idle cctx that will be pooled */
57static int cctx_max_idle = 4; 56static int cctx_max_idle = 4;
58 57
59#define PERL_VERSION_ATLEAST(a,b,c) \ 58#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \ 59 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \ 60 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \ 61 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 62 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
64 63
65#if !PERL_VERSION_ATLEAST (5,6,0) 64#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr 65# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr 66# define PL_ppaddr ppaddr
68# endif 67# endif
… …
98# define GV_NOTQUAL 0 97# define GV_NOTQUAL 0
99#endif 98#endif
100#ifndef newSV 99#ifndef newSV
101# define newSV(l) NEWSV(0,l) 100# define newSV(l) NEWSV(0,l)
102#endif 101#endif
102#ifndef CvISXSUB_on
103# define CvISXSUB_on(cv) (void)cv
104#endif
105#ifndef CvISXSUB
106# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
107#endif
108#ifndef Newx
109# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
110#endif
103 111
104/* 5.8.7 */ 112/* 5.8.7 */
105#ifndef SvRV_set 113#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v) 114# define SvRV_set(s,v) SvRV(s) = (v)
107#endif 115#endif
… …
119# define CORO_PREFER_PERL_FUNCTIONS 0 127# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 128#endif
121 129
122/* The next macros try to return the current stack pointer, in an as 130/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 131 * portable way as possible. */
132#if __GNUC__ >= 4
133# define dSTACKLEVEL int stacklevel_dummy
134# define STACKLEVEL __builtin_frame_address (0)
135#else
124#define dSTACKLEVEL volatile char stacklevel 136# define dSTACKLEVEL volatile void *stacklevel
125#define STACKLEVEL ((void *)&stacklevel) 137# define STACKLEVEL ((void *)&stacklevel)
138#endif
126 139
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 140#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 141
129#if __GNUC__ >= 3 142#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 143# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value)) 144# define expect(expr,value) __builtin_expect ((expr),(value))
145# define INLINE static inline
133#else 146#else
134# define attribute(x) 147# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr) 148# define expect(expr,value) (expr)
149# define INLINE static
137#endif 150#endif
138 151
139#define expect_false(expr) expect ((expr) != 0, 0) 152#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1) 153#define expect_true(expr) expect ((expr) != 0, 1)
141 154
142#define NOINLINE attribute ((noinline)) 155#define NOINLINE attribute ((noinline))
143 156
144#include "CoroAPI.h" 157#include "CoroAPI.h"
158#define GCoroAPI (&coroapi) /* very sneaky */
145 159
146#ifdef USE_ITHREADS 160#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 161# if CORO_PTHREAD
152static void *coro_thx; 162static void *coro_thx;
153# endif 163# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 164#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 165
177static double (*nvtime)(); /* so why doesn't it take void? */ 166static double (*nvtime)(); /* so why doesn't it take void? */
167
168/* we hijack an hopefully unused CV flag for our purposes */
169#define CVf_SLF 0x4000
170static OP *pp_slf (pTHX);
178 171
179static U32 cctx_gen; 172static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 173static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 174static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 175static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 176static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 177static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 178static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 179
188struct transfer_args 180static AV *av_destroy; /* destruction queue */
189{ 181static SV *sv_manager; /* the manager coro */
190 struct coro *prev, *next;
191};
192 182
193static GV *irsgv; /* $/ */ 183static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 184static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 185static SV *rv_diehook;
196static SV *rv_warnhook; 186static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */ 187static HV *hv_sig; /* %SIG */
198 188
199/* async_pool helper stuff */ 189/* async_pool helper stuff */
200static SV *sv_pool_rss; 190static SV *sv_pool_rss;
201static SV *sv_pool_size; 191static SV *sv_pool_size;
192static SV *sv_async_pool_idle; /* description string */
202static AV *av_async_pool; 193static AV *av_async_pool; /* idle pool */
194static SV *sv_Coro; /* class string */
195static CV *cv_pool_handler;
196static CV *cv_coro_state_new;
203 197
204/* Coro::AnyEvent */ 198/* Coro::AnyEvent */
205static SV *sv_activity; 199static SV *sv_activity;
206 200
207static struct coro_cctx *cctx_first; 201static struct coro_cctx *cctx_first;
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 209 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 210 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 211};
218 212
219/* this is a structure representing a c-level coroutine */ 213/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 214typedef struct coro_cctx
215{
221 struct coro_cctx *next; 216 struct coro_cctx *next;
222 217
223 /* the stack */ 218 /* the stack */
224 void *sptr; 219 void *sptr;
225 size_t ssize; 220 size_t ssize;
… …
243 CF_NEW = 0x0004, /* has never been switched to */ 238 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 239 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245}; 240};
246 241
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 242/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 243typedef struct
244{
249 SV *defsv; 245 SV *defsv;
250 AV *defav; 246 AV *defav;
251 SV *errsv; 247 SV *errsv;
252 SV *irsgv; 248 SV *irsgv;
253#define VAR(name,type) type name; 249#define VAR(name,type) type name;
… …
257 253
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 254#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 255
260/* this is a structure representing a perl-level coroutine */ 256/* this is a structure representing a perl-level coroutine */
261struct coro { 257struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 258 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 259 coro_cctx *cctx;
264 260
265 /* process data */ 261 /* state data */
262 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 263 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 264 perl_slots *slot; /* basically the saved sp */
268 265
266 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 267 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 268 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 269 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 270 HV *hv; /* the perl hash associated with this coro, if any */
271 void (*on_destroy)(pTHX_ struct coro *coro);
273 272
274 /* statistics */ 273 /* statistics */
275 int usecount; /* number of transfers to this coro */ 274 int usecount; /* number of transfers to this coro */
276 275
277 /* coro process data */ 276 /* coro process data */
278 int prio; 277 int prio;
279 SV *throw; /* exception to be thrown */ 278 SV *except; /* exception to be thrown */
279 SV *rouse_cb;
280 280
281 /* async_pool */ 281 /* async_pool */
282 SV *saved_deffh; 282 SV *saved_deffh;
283 SV *invoke_cb;
284 AV *invoke_av;
283 285
284 /* linked list */ 286 /* linked list */
285 struct coro *next, *prev; 287 struct coro *next, *prev;
286}; 288};
287 289
288typedef struct coro *Coro__State; 290typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 291typedef struct coro *Coro__State_or_hashref;
292
293/* the following variables are effectively part of the perl context */
294/* and get copied between struct coro and these variables */
295/* the mainr easonw e don't support windows process emulation */
296static struct CoroSLF slf_frame; /* the current slf frame */
290 297
291/** Coro ********************************************************************/ 298/** Coro ********************************************************************/
292 299
293#define PRIO_MAX 3 300#define PRIO_MAX 3
294#define PRIO_HIGH 1 301#define PRIO_HIGH 1
… …
299 306
300/* for Coro.pm */ 307/* for Coro.pm */
301static SV *coro_current; 308static SV *coro_current;
302static SV *coro_readyhook; 309static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 310static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
304static int coro_nready; 311static CV *cv_coro_run, *cv_coro_terminate;
305static struct coro *coro_first; 312static struct coro *coro_first;
313#define coro_nready coroapi.nready
306 314
307/** lowlevel stuff **********************************************************/ 315/** lowlevel stuff **********************************************************/
308 316
309static SV * 317static SV *
310coro_get_sv (pTHX_ const char *name, int create) 318coro_get_sv (pTHX_ const char *name, int create)
… …
334 get_hv (name, create); 342 get_hv (name, create);
335#endif 343#endif
336 return get_hv (name, create); 344 return get_hv (name, create);
337} 345}
338 346
347/* may croak */
348INLINE CV *
349coro_sv_2cv (pTHX_ SV *sv)
350{
351 HV *st;
352 GV *gvp;
353 return sv_2cv (sv, &st, &gvp, 0);
354}
355
339static AV * 356static AV *
340coro_clone_padlist (pTHX_ CV *cv) 357coro_derive_padlist (pTHX_ CV *cv)
341{ 358{
342 AV *padlist = CvPADLIST (cv); 359 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 360 AV *newpadlist, *newpad;
344 361
345 newpadlist = newAV (); 362 newpadlist = newAV ();
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 412 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 413
397 return 0; 414 return 0;
398} 415}
399 416
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 417#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 418#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 419
403static MGVTBL coro_cv_vtbl = { 420static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 421 0, 0, 0, 0,
405 coro_cv_free 422 coro_cv_free
406}; 423};
407 424
425#define CORO_MAGIC_NN(sv, type) \
426 (expect_true (SvMAGIC (sv)->mg_type == type) \
427 ? SvMAGIC (sv) \
428 : mg_find (sv, type))
429
408#define CORO_MAGIC(sv, type) \ 430#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 431 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 432 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 433 : 0)
414 434
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 435#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 436#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417 437
418static struct coro * 438INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 439SvSTATE_ (pTHX_ SV *coro)
420{ 440{
421 HV *stash; 441 HV *stash;
422 MAGIC *mg; 442 MAGIC *mg;
423 443
… …
438 mg = CORO_MAGIC_state (coro); 458 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 459 return (struct coro *)mg->mg_ptr;
440} 460}
441 461
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 462#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
463
464/* faster than SvSTATE, but expects a coroutine hv */
465#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
466#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 467
444/* the next two functions merely cache the padlists */ 468/* the next two functions merely cache the padlists */
445static void 469static void
446get_padlist (pTHX_ CV *cv) 470get_padlist (pTHX_ CV *cv)
447{ 471{
… …
453 else 477 else
454 { 478 {
455#if CORO_PREFER_PERL_FUNCTIONS 479#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 480 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 481 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 482 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 483 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 484 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 485 SvREFCNT_dec (cp);
462#else 486#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 487 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 488#endif
465 } 489 }
466} 490}
467 491
468static void 492static void
… …
514 CvPADLIST (cv) = (AV *)POPs; 538 CvPADLIST (cv) = (AV *)POPs;
515 } 539 }
516 540
517 PUTBACK; 541 PUTBACK;
518 } 542 }
543
544 slf_frame = c->slf_frame;
545 CORO_THROW = c->except;
519} 546}
520 547
521static void 548static void
522save_perl (pTHX_ Coro__State c) 549save_perl (pTHX_ Coro__State c)
523{ 550{
551 c->except = CORO_THROW;
552 c->slf_frame = slf_frame;
553
524 { 554 {
525 dSP; 555 dSP;
526 I32 cxix = cxstack_ix; 556 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 557 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 558 PERL_SI *top_si = PL_curstackinfo;
… …
595 #undef VAR 625 #undef VAR
596 } 626 }
597} 627}
598 628
599/* 629/*
600 * allocate various perl stacks. This is an exact copy 630 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 631 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 632 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 633 * not usually need a lot of stackspace.
604 */ 634 */
605#if CORO_PREFER_PERL_FUNCTIONS 635#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 636# define coro_init_stacks(thx) init_stacks ()
607#else 637#else
608static void 638static void
609coro_init_stacks (pTHX) 639coro_init_stacks (pTHX)
610{ 640{
611 PL_curstackinfo = new_stackinfo(32, 8); 641 PL_curstackinfo = new_stackinfo(32, 8);
… …
674#if !PERL_VERSION_ATLEAST (5,10,0) 704#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 705 Safefree (PL_retstack);
676#endif 706#endif
677} 707}
678 708
709#define CORO_RSS \
710 rss += sizeof (SYM (curstackinfo)); \
711 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
712 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
713 rss += SYM (tmps_max) * sizeof (SV *); \
714 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
715 rss += SYM (scopestack_max) * sizeof (I32); \
716 rss += SYM (savestack_max) * sizeof (ANY);
717
679static size_t 718static size_t
680coro_rss (pTHX_ struct coro *coro) 719coro_rss (pTHX_ struct coro *coro)
681{ 720{
682 size_t rss = sizeof (*coro); 721 size_t rss = sizeof (*coro);
683 722
684 if (coro->mainstack) 723 if (coro->mainstack)
685 { 724 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 725 if (coro->flags & CF_RUNNING)
690 { 726 {
691 slot = &tmp_slot; 727 #define SYM(sym) PL_ ## sym
692 728 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 729 #undef SYM
696 } 730 }
697 else 731 else
698 slot = coro->slot;
699
700 if (slot)
701 { 732 {
702 rss += sizeof (slot->curstackinfo); 733 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 734 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 735 #undef SYM
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 } 736 }
714 } 737 }
715 738
716 return rss; 739 return rss;
717} 740}
… …
807 830
808 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 831 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
809} 832}
810 833
811static void 834static void
835prepare_nop (pTHX_ struct coro_transfer_args *ta)
836{
837 /* kind of mega-hacky, but works */
838 ta->next = ta->prev = (struct coro *)ta;
839}
840
841static int
842slf_check_nop (pTHX_ struct CoroSLF *frame)
843{
844 return 0;
845}
846
847static int
848slf_check_repeat (pTHX_ struct CoroSLF *frame)
849{
850 return 1;
851}
852
853static UNOP coro_setup_op;
854
855static void NOINLINE /* noinline to keep it out of the transfer fast path */
812coro_setup (pTHX_ struct coro *coro) 856coro_setup (pTHX_ struct coro *coro)
813{ 857{
814 /* 858 /*
815 * emulate part of the perl startup here. 859 * emulate part of the perl startup here.
816 */ 860 */
… …
843 { 887 {
844 dSP; 888 dSP;
845 UNOP myop; 889 UNOP myop;
846 890
847 Zero (&myop, 1, UNOP); 891 Zero (&myop, 1, UNOP);
848 myop.op_next = Nullop; 892 myop.op_next = Nullop;
893 myop.op_type = OP_ENTERSUB;
849 myop.op_flags = OPf_WANT_VOID; 894 myop.op_flags = OPf_WANT_VOID;
850 895
851 PUSHMARK (SP); 896 PUSHMARK (SP);
852 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 897 PUSHs ((SV *)coro->startcv);
853 PUTBACK; 898 PUTBACK;
854 PL_op = (OP *)&myop; 899 PL_op = (OP *)&myop;
855 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 900 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
856 SPAGAIN;
857 } 901 }
858 902
859 /* this newly created coroutine might be run on an existing cctx which most 903 /* this newly created coroutine might be run on an existing cctx which most
860 * likely was suspended in set_stacklevel, called from entersub. 904 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
861 * set_stacklevel doesn't do anything on return, but entersub does LEAVE,
862 * so we ENTER here for symmetry.
863 */ 905 */
864 ENTER; 906 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
907 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
908
909 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
910 coro_setup_op.op_next = PL_op;
911 coro_setup_op.op_type = OP_ENTERSUB;
912 coro_setup_op.op_ppaddr = pp_slf;
913 /* no flags etc. required, as an init function won't be called */
914
915 PL_op = (OP *)&coro_setup_op;
916
917 /* copy throw, in case it was set before coro_setup */
918 CORO_THROW = coro->except;
865} 919}
866 920
867static void 921static void
868coro_destruct (pTHX_ struct coro *coro) 922coro_destruct (pTHX_ struct coro *coro)
869{ 923{
… …
893 947
894 SvREFCNT_dec (PL_diehook); 948 SvREFCNT_dec (PL_diehook);
895 SvREFCNT_dec (PL_warnhook); 949 SvREFCNT_dec (PL_warnhook);
896 950
897 SvREFCNT_dec (coro->saved_deffh); 951 SvREFCNT_dec (coro->saved_deffh);
898 SvREFCNT_dec (coro->throw); 952 SvREFCNT_dec (coro->rouse_cb);
953 SvREFCNT_dec (coro->invoke_cb);
954 SvREFCNT_dec (coro->invoke_av);
899 955
900 coro_destruct_stacks (aTHX); 956 coro_destruct_stacks (aTHX);
901} 957}
902 958
903static void 959INLINE void
904free_coro_mortal (pTHX) 960free_coro_mortal (pTHX)
905{ 961{
906 if (expect_true (coro_mortal)) 962 if (expect_true (coro_mortal))
907 { 963 {
908 SvREFCNT_dec (coro_mortal); 964 SvREFCNT_dec (coro_mortal);
… …
913static int 969static int
914runops_trace (pTHX) 970runops_trace (pTHX)
915{ 971{
916 COP *oldcop = 0; 972 COP *oldcop = 0;
917 int oldcxix = -2; 973 int oldcxix = -2;
918 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 974 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
919 coro_cctx *cctx = coro->cctx; 975 coro_cctx *cctx = coro->cctx;
920 976
921 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 977 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
922 { 978 {
923 PERL_ASYNC_CHECK (); 979 PERL_ASYNC_CHECK ();
… …
975 { 1031 {
976 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1032 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
977 1033
978 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1034 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
979 { 1035 {
980 runops_proc_t old_runops = PL_runops;
981 dSP; 1036 dSP;
982 GV *gv = CvGV (cx->blk_sub.cv); 1037 GV *gv = CvGV (cx->blk_sub.cv);
983 SV *fullname = sv_2mortal (newSV (0)); 1038 SV *fullname = sv_2mortal (newSV (0));
984 1039
985 if (isGV (gv)) 1040 if (isGV (gv))
… …
990 SAVETMPS; 1045 SAVETMPS;
991 EXTEND (SP, 3); 1046 EXTEND (SP, 3);
992 PUSHMARK (SP); 1047 PUSHMARK (SP);
993 PUSHs (&PL_sv_yes); 1048 PUSHs (&PL_sv_yes);
994 PUSHs (fullname); 1049 PUSHs (fullname);
995 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1050 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
996 PUTBACK; 1051 PUTBACK;
997 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1052 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
998 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1053 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
999 SPAGAIN; 1054 SPAGAIN;
1000 FREETMPS; 1055 FREETMPS;
… …
1032 1087
1033 TAINT_NOT; 1088 TAINT_NOT;
1034 return 0; 1089 return 0;
1035} 1090}
1036 1091
1092static struct coro_cctx *cctx_ssl_cctx;
1093static struct CoroSLF cctx_ssl_frame;
1094
1037static void 1095static void
1038prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1096slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1039{ 1097{
1040 ta->prev = (struct coro *)cctx; 1098 ta->prev = (struct coro *)cctx_ssl_cctx;
1041 ta->next = 0; 1099 ta->next = 0;
1042} 1100}
1043 1101
1044/* inject a fake call to Coro::State::_cctx_init into the execution */ 1102static int
1045/* _cctx_init should be careful, as it could be called at almost any time */ 1103slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1046/* during execution of a perl program */ 1104{
1047/* also initialises PL_top_env */ 1105 *frame = cctx_ssl_frame;
1106
1107 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1108}
1109
1110/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1048static void NOINLINE 1111static void NOINLINE
1049cctx_prepare (pTHX_ coro_cctx *cctx) 1112cctx_prepare (pTHX_ coro_cctx *cctx)
1050{ 1113{
1051 dSP;
1052 UNOP myop;
1053
1054 PL_top_env = &PL_start_env; 1114 PL_top_env = &PL_start_env;
1055 1115
1056 if (cctx->flags & CC_TRACE) 1116 if (cctx->flags & CC_TRACE)
1057 PL_runops = runops_trace; 1117 PL_runops = runops_trace;
1058 1118
1059 Zero (&myop, 1, UNOP); 1119 /* we already must be executing an SLF op, there is no other valid way
1060 myop.op_next = PL_op; 1120 * that can lead to creation of a new cctx */
1061 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1121 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1122 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1062 1123
1063 PUSHMARK (SP); 1124 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1064 EXTEND (SP, 2); 1125 cctx_ssl_cctx = cctx;
1065 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1126 cctx_ssl_frame = slf_frame;
1066 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1067 PUTBACK;
1068 PL_op = (OP *)&myop;
1069 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1070 SPAGAIN;
1071}
1072 1127
1128 slf_frame.prepare = slf_prepare_set_stacklevel;
1129 slf_frame.check = slf_check_set_stacklevel;
1130}
1131
1073/* the tail of transfer: execute stuff we can onyl do afetr a transfer */ 1132/* the tail of transfer: execute stuff we can only do after a transfer */
1074static void 1133INLINE void
1075transfer_tail (void) 1134transfer_tail (pTHX)
1076{ 1135{
1077 struct coro *next = (struct coro *)transfer_next;
1078 transfer_next = 0; //D for temporary assertion in transfer
1079 assert (("FATAL ERROR: internal error 1067 in Coro module, please report", next));//D
1080
1081 free_coro_mortal (aTHX); 1136 free_coro_mortal (aTHX);
1082 UNLOCK;
1083
1084 if (expect_false (next->throw))
1085 {
1086 SV *exception = sv_2mortal (next->throw);
1087
1088 next->throw = 0;
1089 sv_setsv (ERRSV, exception);
1090 croak (0);
1091 }
1092} 1137}
1093 1138
1094/* 1139/*
1095 * this is a _very_ stripped down perl interpreter ;) 1140 * this is a _very_ stripped down perl interpreter ;)
1096 */ 1141 */
… …
1103# endif 1148# endif
1104#endif 1149#endif
1105 { 1150 {
1106 dTHX; 1151 dTHX;
1107 1152
1108 /* entersub called ENTER, but we never 'returned', undo that here */ 1153 /* normally we would need to skip the entersub here */
1109 LEAVE; 1154 /* not doing so will re-execute it, which is exactly what we want */
1110
1111 /* we now skip the entersub that did lead to transfer() */
1112 PL_op = PL_op->op_next; 1155 /* PL_nop = PL_nop->op_next */
1113 1156
1114 /* inject a fake subroutine call to cctx_init */ 1157 /* inject a fake subroutine call to cctx_init */
1115 cctx_prepare (aTHX_ (coro_cctx *)arg); 1158 cctx_prepare (aTHX_ (coro_cctx *)arg);
1116 1159
1117 /* cctx_run is the alternative tail of transfer() */ 1160 /* cctx_run is the alternative tail of transfer() */
1118 transfer_tail (); 1161 transfer_tail (aTHX);
1119 1162
1120 /* somebody or something will hit me for both perl_run and PL_restartop */ 1163 /* somebody or something will hit me for both perl_run and PL_restartop */
1121 PL_restartop = PL_op; 1164 PL_restartop = PL_op;
1122 perl_run (PL_curinterp); 1165 perl_run (PL_curinterp);
1166 /*
1167 * Unfortunately, there is no way to get at the return values of the
1168 * coro body here, as perl_run destroys these
1169 */
1123 1170
1124 /* 1171 /*
1125 * If perl-run returns we assume exit() was being called or the coro 1172 * If perl-run returns we assume exit() was being called or the coro
1126 * fell off the end, which seems to be the only valid (non-bug) 1173 * fell off the end, which seems to be the only valid (non-bug)
1127 * reason for perl_run to return. We try to exit by jumping to the 1174 * reason for perl_run to return. We try to exit by jumping to the
… …
1173 /* mmap supposedly does allocate-on-write for us */ 1220 /* mmap supposedly does allocate-on-write for us */
1174 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1221 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1175 1222
1176 if (cctx->sptr != (void *)-1) 1223 if (cctx->sptr != (void *)-1)
1177 { 1224 {
1178# if CORO_STACKGUARD 1225 #if CORO_STACKGUARD
1179 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1226 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1180# endif 1227 #endif
1181 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1228 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1182 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1229 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1183 cctx->flags |= CC_MAPPED; 1230 cctx->flags |= CC_MAPPED;
1184 } 1231 }
1185 else 1232 else
1186#endif 1233#endif
1187 { 1234 {
1188 cctx->ssize = cctx_stacksize * (long)sizeof (long); 1235 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1189 New (0, cctx->sptr, cctx_stacksize, long); 1236 New (0, cctx->sptr, cctx_stacksize, long);
1190 1237
1191 if (!cctx->sptr) 1238 if (!cctx->sptr)
1192 { 1239 {
1193 perror ("FATAL: unable to allocate stack for coroutine"); 1240 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1194 _exit (EXIT_FAILURE); 1241 _exit (EXIT_FAILURE);
1195 } 1242 }
1196 1243
1197 stack_start = cctx->sptr; 1244 stack_start = cctx->sptr;
1198 stack_size = cctx->ssize; 1245 stack_size = cctx->ssize;
1199 } 1246 }
1200 1247
1201 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1248 #if CORO_USE_VALGRIND
1249 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1250 #endif
1251
1202 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1252 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1203 1253
1204 return cctx; 1254 return cctx;
1205} 1255}
1206 1256
… …
1214 coro_destroy (&cctx->cctx); 1264 coro_destroy (&cctx->cctx);
1215 1265
1216 /* coro_transfer creates new, empty cctx's */ 1266 /* coro_transfer creates new, empty cctx's */
1217 if (cctx->sptr) 1267 if (cctx->sptr)
1218 { 1268 {
1219#if CORO_USE_VALGRIND 1269 #if CORO_USE_VALGRIND
1220 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1270 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1221#endif 1271 #endif
1222 1272
1223#if HAVE_MMAP 1273#if HAVE_MMAP
1224 if (cctx->flags & CC_MAPPED) 1274 if (cctx->flags & CC_MAPPED)
1225 munmap (cctx->sptr, cctx->ssize); 1275 munmap (cctx->sptr, cctx->ssize);
1226 else 1276 else
… …
1253} 1303}
1254 1304
1255static void 1305static void
1256cctx_put (coro_cctx *cctx) 1306cctx_put (coro_cctx *cctx)
1257{ 1307{
1258 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1308 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1259 1309
1260 /* free another cctx if overlimit */ 1310 /* free another cctx if overlimit */
1261 if (expect_false (cctx_idle >= cctx_max_idle)) 1311 if (expect_false (cctx_idle >= cctx_max_idle))
1262 { 1312 {
1263 coro_cctx *first = cctx_first; 1313 coro_cctx *first = cctx_first;
… …
1275/** coroutine switching *****************************************************/ 1325/** coroutine switching *****************************************************/
1276 1326
1277static void 1327static void
1278transfer_check (pTHX_ struct coro *prev, struct coro *next) 1328transfer_check (pTHX_ struct coro *prev, struct coro *next)
1279{ 1329{
1330 /* TODO: throwing up here is considered harmful */
1331
1280 if (expect_true (prev != next)) 1332 if (expect_true (prev != next))
1281 { 1333 {
1282 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1334 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1283 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1335 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1284 1336
1285 if (expect_false (next->flags & CF_RUNNING)) 1337 if (expect_false (next->flags & CF_RUNNING))
1286 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1338 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1287 1339
1288 if (expect_false (next->flags & CF_DESTROYED)) 1340 if (expect_false (next->flags & CF_DESTROYED))
1289 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1341 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1290 1342
1291#if !PERL_VERSION_ATLEAST (5,10,0) 1343#if !PERL_VERSION_ATLEAST (5,10,0)
1292 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1344 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1293 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1345 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1294#endif 1346#endif
1295 } 1347 }
1296} 1348}
1297 1349
1298/* always use the TRANSFER macro */ 1350/* always use the TRANSFER macro */
1299static void NOINLINE 1351static void NOINLINE /* noinline so we have a fixed stackframe */
1300transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1352transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1301{ 1353{
1302 dSTACKLEVEL; 1354 dSTACKLEVEL;
1303 1355
1304 /* sometimes transfer is only called to set idle_sp */ 1356 /* sometimes transfer is only called to set idle_sp */
… …
1319 prev->flags |= CF_RUNNING; 1371 prev->flags |= CF_RUNNING;
1320 } 1372 }
1321 1373
1322 prev->flags &= ~CF_RUNNING; 1374 prev->flags &= ~CF_RUNNING;
1323 next->flags |= CF_RUNNING; 1375 next->flags |= CF_RUNNING;
1324
1325 LOCK;
1326 1376
1327 /* first get rid of the old state */ 1377 /* first get rid of the old state */
1328 save_perl (aTHX_ prev); 1378 save_perl (aTHX_ prev);
1329 1379
1330 if (expect_false (next->flags & CF_NEW)) 1380 if (expect_false (next->flags & CF_NEW))
… …
1344 prev__cctx->idle_sp == STACKLEVEL 1394 prev__cctx->idle_sp == STACKLEVEL
1345 && !(prev__cctx->flags & CC_TRACE) 1395 && !(prev__cctx->flags & CC_TRACE)
1346 && !force_cctx 1396 && !force_cctx
1347 )) 1397 ))
1348 { 1398 {
1349 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1399 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1350 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1400 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1351 1401
1352 prev->cctx = 0; 1402 prev->cctx = 0;
1353 1403
1354 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1404 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1355 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1405 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1362 1412
1363 ++next->usecount; 1413 ++next->usecount;
1364 1414
1365 if (expect_true (!next->cctx)) 1415 if (expect_true (!next->cctx))
1366 next->cctx = cctx_get (aTHX); 1416 next->cctx = cctx_get (aTHX);
1367
1368 assert (("FATAL ERROR: internal error 1352 in Coro, please report", !transfer_next));//D
1369 transfer_next = next;
1370 1417
1371 if (expect_false (prev__cctx != next->cctx)) 1418 if (expect_false (prev__cctx != next->cctx))
1372 { 1419 {
1373 prev__cctx->top_env = PL_top_env; 1420 prev__cctx->top_env = PL_top_env;
1374 PL_top_env = next->cctx->top_env; 1421 PL_top_env = next->cctx->top_env;
1375 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1422 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1376 } 1423 }
1377 1424
1378 transfer_tail (); 1425 transfer_tail (aTHX);
1379 } 1426 }
1380} 1427}
1381 1428
1382#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1429#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1383#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1430#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
… …
1387static int 1434static int
1388coro_state_destroy (pTHX_ struct coro *coro) 1435coro_state_destroy (pTHX_ struct coro *coro)
1389{ 1436{
1390 if (coro->flags & CF_DESTROYED) 1437 if (coro->flags & CF_DESTROYED)
1391 return 0; 1438 return 0;
1439
1440 if (coro->on_destroy)
1441 coro->on_destroy (aTHX_ coro);
1392 1442
1393 coro->flags |= CF_DESTROYED; 1443 coro->flags |= CF_DESTROYED;
1394 1444
1395 if (coro->flags & CF_READY) 1445 if (coro->flags & CF_READY)
1396 { 1446 {
1397 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1447 /* reduce nready, as destroying a ready coro effectively unreadies it */
1398 /* alternative: look through all ready queues and remove the coro */ 1448 /* alternative: look through all ready queues and remove the coro */
1399 LOCK;
1400 --coro_nready; 1449 --coro_nready;
1401 UNLOCK;
1402 } 1450 }
1403 else 1451 else
1404 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1452 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1405 1453
1406 if (coro->mainstack && coro->mainstack != main_mainstack) 1454 if (coro->mainstack && coro->mainstack != main_mainstack)
1407 { 1455 {
1408 struct coro temp; 1456 struct coro temp;
1409 1457
1410 if (coro->flags & CF_RUNNING) 1458 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1411 croak ("FATAL: tried to destroy currently running coroutine");
1412 1459
1413 save_perl (aTHX_ &temp); 1460 save_perl (aTHX_ &temp);
1414 load_perl (aTHX_ coro); 1461 load_perl (aTHX_ coro);
1415 1462
1416 coro_destruct (aTHX_ coro); 1463 coro_destruct (aTHX_ coro);
… …
1419 1466
1420 coro->slot = 0; 1467 coro->slot = 0;
1421 } 1468 }
1422 1469
1423 cctx_destroy (coro->cctx); 1470 cctx_destroy (coro->cctx);
1471 SvREFCNT_dec (coro->startcv);
1424 SvREFCNT_dec (coro->args); 1472 SvREFCNT_dec (coro->args);
1473 SvREFCNT_dec (CORO_THROW);
1425 1474
1426 if (coro->next) coro->next->prev = coro->prev; 1475 if (coro->next) coro->next->prev = coro->prev;
1427 if (coro->prev) coro->prev->next = coro->next; 1476 if (coro->prev) coro->prev->next = coro->next;
1428 if (coro == coro_first) coro_first = coro->next; 1477 if (coro == coro_first) coro_first = coro->next;
1429 1478
… …
1467# define MGf_DUP 0 1516# define MGf_DUP 0
1468#endif 1517#endif
1469}; 1518};
1470 1519
1471static void 1520static void
1472prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1521prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1473{ 1522{
1474 ta->prev = SvSTATE (prev_sv); 1523 ta->prev = SvSTATE (prev_sv);
1475 ta->next = SvSTATE (next_sv); 1524 ta->next = SvSTATE (next_sv);
1476 TRANSFER_CHECK (*ta); 1525 TRANSFER_CHECK (*ta);
1477} 1526}
1478 1527
1479static void 1528static void
1480api_transfer (SV *prev_sv, SV *next_sv) 1529api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1481{ 1530{
1482 dTHX;
1483 struct transfer_args ta; 1531 struct coro_transfer_args ta;
1484 1532
1485 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1533 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1486 TRANSFER (ta, 1); 1534 TRANSFER (ta, 1);
1487} 1535}
1488 1536
1537/*****************************************************************************/
1538/* gensub: simple closure generation utility */
1539
1540#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1541
1542/* create a closure from XS, returns a code reference */
1543/* the arg can be accessed via GENSUB_ARG from the callback */
1544/* the callback must use dXSARGS/XSRETURN */
1545static SV *
1546gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1547{
1548 CV *cv = (CV *)newSV (0);
1549
1550 sv_upgrade ((SV *)cv, SVt_PVCV);
1551
1552 CvANON_on (cv);
1553 CvISXSUB_on (cv);
1554 CvXSUB (cv) = xsub;
1555 GENSUB_ARG = arg;
1556
1557 return newRV_noinc ((SV *)cv);
1558}
1559
1489/** Coro ********************************************************************/ 1560/** Coro ********************************************************************/
1490 1561
1491static void 1562INLINE void
1492coro_enq (pTHX_ SV *coro_sv) 1563coro_enq (pTHX_ struct coro *coro)
1493{ 1564{
1494 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1565 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1495} 1566}
1496 1567
1497static SV * 1568INLINE SV *
1498coro_deq (pTHX) 1569coro_deq (pTHX)
1499{ 1570{
1500 int prio; 1571 int prio;
1501 1572
1502 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1573 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1505 1576
1506 return 0; 1577 return 0;
1507} 1578}
1508 1579
1509static int 1580static int
1510api_ready (SV *coro_sv) 1581api_ready (pTHX_ SV *coro_sv)
1511{ 1582{
1512 dTHX;
1513 struct coro *coro; 1583 struct coro *coro;
1514 SV *sv_hook; 1584 SV *sv_hook;
1515 void (*xs_hook)(void); 1585 void (*xs_hook)(void);
1516 1586
1517 if (SvROK (coro_sv)) 1587 if (SvROK (coro_sv))
… …
1522 if (coro->flags & CF_READY) 1592 if (coro->flags & CF_READY)
1523 return 0; 1593 return 0;
1524 1594
1525 coro->flags |= CF_READY; 1595 coro->flags |= CF_READY;
1526 1596
1527 LOCK;
1528
1529 sv_hook = coro_nready ? 0 : coro_readyhook; 1597 sv_hook = coro_nready ? 0 : coro_readyhook;
1530 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1598 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1531 1599
1532 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1600 coro_enq (aTHX_ coro);
1533 ++coro_nready; 1601 ++coro_nready;
1534 1602
1535 UNLOCK;
1536
1537 if (sv_hook) 1603 if (sv_hook)
1538 { 1604 {
1539 dSP; 1605 dSP;
1540 1606
1541 ENTER; 1607 ENTER;
1542 SAVETMPS; 1608 SAVETMPS;
1543 1609
1544 PUSHMARK (SP); 1610 PUSHMARK (SP);
1545 PUTBACK; 1611 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD); 1612 call_sv (sv_hook, G_VOID | G_DISCARD);
1547 SPAGAIN;
1548 1613
1549 FREETMPS; 1614 FREETMPS;
1550 LEAVE; 1615 LEAVE;
1551 } 1616 }
1552 1617
… …
1555 1620
1556 return 1; 1621 return 1;
1557} 1622}
1558 1623
1559static int 1624static int
1560api_is_ready (SV *coro_sv) 1625api_is_ready (pTHX_ SV *coro_sv)
1561{ 1626{
1562 dTHX;
1563 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1627 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1564} 1628}
1565 1629
1630/* expects to own a reference to next->hv */
1631INLINE void
1632prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1633{
1634 SV *prev_sv = SvRV (coro_current);
1635
1636 ta->prev = SvSTATE_hv (prev_sv);
1637 ta->next = next;
1638
1639 TRANSFER_CHECK (*ta);
1640
1641 SvRV_set (coro_current, (SV *)next->hv);
1642
1643 free_coro_mortal (aTHX);
1644 coro_mortal = prev_sv;
1645}
1646
1566static void 1647static void
1567prepare_schedule (pTHX_ struct transfer_args *ta) 1648prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1568{ 1649{
1569 SV *prev_sv, *next_sv;
1570
1571 for (;;) 1650 for (;;)
1572 { 1651 {
1573 LOCK;
1574 next_sv = coro_deq (aTHX); 1652 SV *next_sv = coro_deq (aTHX);
1575 1653
1576 /* nothing to schedule: call the idle handler */
1577 if (expect_false (!next_sv)) 1654 if (expect_true (next_sv))
1578 { 1655 {
1656 struct coro *next = SvSTATE_hv (next_sv);
1657
1658 /* cannot transfer to destroyed coros, skip and look for next */
1659 if (expect_false (next->flags & CF_DESTROYED))
1660 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1661 else
1662 {
1663 next->flags &= ~CF_READY;
1664 --coro_nready;
1665
1666 prepare_schedule_to (aTHX_ ta, next);
1667 break;
1668 }
1669 }
1670 else
1671 {
1672 /* nothing to schedule: call the idle handler */
1579 dSP; 1673 dSP;
1580 UNLOCK;
1581 1674
1582 ENTER; 1675 ENTER;
1583 SAVETMPS; 1676 SAVETMPS;
1584 1677
1585 PUSHMARK (SP); 1678 PUSHMARK (SP);
1586 PUTBACK; 1679 PUTBACK;
1587 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1680 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1588 SPAGAIN;
1589 1681
1590 FREETMPS; 1682 FREETMPS;
1591 LEAVE; 1683 LEAVE;
1592 continue;
1593 } 1684 }
1594
1595 ta->next = SvSTATE (next_sv);
1596
1597 /* cannot transfer to destroyed coros, skip and look for next */
1598 if (expect_false (ta->next->flags & CF_DESTROYED))
1599 {
1600 UNLOCK;
1601 SvREFCNT_dec (next_sv);
1602 /* coro_nready has already been taken care of by destroy */
1603 continue;
1604 }
1605
1606 --coro_nready;
1607 UNLOCK;
1608 break;
1609 } 1685 }
1610
1611 /* free this only after the transfer */
1612 prev_sv = SvRV (coro_current);
1613 ta->prev = SvSTATE (prev_sv);
1614 TRANSFER_CHECK (*ta);
1615 assert (ta->next->flags & CF_READY);
1616 ta->next->flags &= ~CF_READY;
1617 SvRV_set (coro_current, next_sv);
1618
1619 LOCK;
1620 free_coro_mortal (aTHX);
1621 coro_mortal = prev_sv;
1622 UNLOCK;
1623} 1686}
1624 1687
1625static void 1688INLINE void
1626prepare_cede (pTHX_ struct transfer_args *ta) 1689prepare_cede (pTHX_ struct coro_transfer_args *ta)
1627{ 1690{
1628 api_ready (coro_current); 1691 api_ready (aTHX_ coro_current);
1629 prepare_schedule (aTHX_ ta); 1692 prepare_schedule (aTHX_ ta);
1630} 1693}
1631 1694
1695INLINE void
1696prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1697{
1698 SV *prev = SvRV (coro_current);
1699
1700 if (coro_nready)
1701 {
1702 prepare_schedule (aTHX_ ta);
1703 api_ready (aTHX_ prev);
1704 }
1705 else
1706 prepare_nop (aTHX_ ta);
1707}
1708
1709static void
1710api_schedule (pTHX)
1711{
1712 struct coro_transfer_args ta;
1713
1714 prepare_schedule (aTHX_ &ta);
1715 TRANSFER (ta, 1);
1716}
1717
1718static void
1719api_schedule_to (pTHX_ SV *coro_sv)
1720{
1721 struct coro_transfer_args ta;
1722 struct coro *next = SvSTATE (coro_sv);
1723
1724 SvREFCNT_inc_NN (coro_sv);
1725 prepare_schedule_to (aTHX_ &ta, next);
1726}
1727
1632static int 1728static int
1633prepare_cede_notself (pTHX_ struct transfer_args *ta) 1729api_cede (pTHX)
1634{ 1730{
1635 if (coro_nready) 1731 struct coro_transfer_args ta;
1636 { 1732
1637 SV *prev = SvRV (coro_current);
1638 prepare_schedule (aTHX_ ta); 1733 prepare_cede (aTHX_ &ta);
1639 api_ready (prev); 1734
1735 if (expect_true (ta.prev != ta.next))
1736 {
1737 TRANSFER (ta, 1);
1640 return 1; 1738 return 1;
1641 } 1739 }
1642 else 1740 else
1643 return 0; 1741 return 0;
1644} 1742}
1645 1743
1646static void
1647api_schedule (void)
1648{
1649 dTHX;
1650 struct transfer_args ta;
1651
1652 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1);
1654}
1655
1656static int 1744static int
1657api_cede (void) 1745api_cede_notself (pTHX)
1658{ 1746{
1659 dTHX; 1747 if (coro_nready)
1748 {
1660 struct transfer_args ta; 1749 struct coro_transfer_args ta;
1661 1750
1662 prepare_cede (aTHX_ &ta); 1751 prepare_cede_notself (aTHX_ &ta);
1663
1664 if (expect_true (ta.prev != ta.next))
1665 {
1666 TRANSFER (ta, 1); 1752 TRANSFER (ta, 1);
1667 return 1; 1753 return 1;
1668 } 1754 }
1669 else 1755 else
1670 return 0; 1756 return 0;
1671} 1757}
1672 1758
1673static int 1759static void
1674api_cede_notself (void)
1675{
1676 dTHX;
1677 struct transfer_args ta;
1678
1679 if (prepare_cede_notself (aTHX_ &ta))
1680 {
1681 TRANSFER (ta, 1);
1682 return 1;
1683 }
1684 else
1685 return 0;
1686}
1687
1688static void
1689api_trace (SV *coro_sv, int flags) 1760api_trace (pTHX_ SV *coro_sv, int flags)
1690{ 1761{
1691 dTHX;
1692 struct coro *coro = SvSTATE (coro_sv); 1762 struct coro *coro = SvSTATE (coro_sv);
1693 1763
1694 if (flags & CC_TRACE) 1764 if (flags & CC_TRACE)
1695 { 1765 {
1696 if (!coro->cctx) 1766 if (!coro->cctx)
1697 coro->cctx = cctx_new_run (); 1767 coro->cctx = cctx_new_run ();
1698 else if (!(coro->cctx->flags & CC_TRACE)) 1768 else if (!(coro->cctx->flags & CC_TRACE))
1699 croak ("cannot enable tracing on coroutine with custom stack"); 1769 croak ("cannot enable tracing on coroutine with custom stack,");
1700 1770
1701 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1771 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1702 } 1772 }
1703 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1773 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1704 { 1774 {
… …
1709 else 1779 else
1710 coro->slot->runops = RUNOPS_DEFAULT; 1780 coro->slot->runops = RUNOPS_DEFAULT;
1711 } 1781 }
1712} 1782}
1713 1783
1714#if 0 1784static void
1785coro_call_on_destroy (pTHX_ struct coro *coro)
1786{
1787 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1788 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1789
1790 if (on_destroyp)
1791 {
1792 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1793
1794 while (AvFILLp (on_destroy) >= 0)
1795 {
1796 dSP; /* don't disturb outer sp */
1797 SV *cb = av_pop (on_destroy);
1798
1799 PUSHMARK (SP);
1800
1801 if (statusp)
1802 {
1803 int i;
1804 AV *status = (AV *)SvRV (*statusp);
1805 EXTEND (SP, AvFILLp (status) + 1);
1806
1807 for (i = 0; i <= AvFILLp (status); ++i)
1808 PUSHs (AvARRAY (status)[i]);
1809 }
1810
1811 PUTBACK;
1812 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1813 }
1814 }
1815}
1816
1817static void
1818slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1819{
1820 int i;
1821 HV *hv = (HV *)SvRV (coro_current);
1822 AV *av = newAV ();
1823
1824 av_extend (av, items - 1);
1825 for (i = 0; i < items; ++i)
1826 av_push (av, SvREFCNT_inc_NN (arg [i]));
1827
1828 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1829
1830 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1831 api_ready (aTHX_ sv_manager);
1832
1833 frame->prepare = prepare_schedule;
1834 frame->check = slf_check_repeat;
1835}
1836
1837/*****************************************************************************/
1838/* async pool handler */
1839
1715static int 1840static int
1716coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1841slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1717{ 1842{
1718 AV *padlist; 1843 HV *hv = (HV *)SvRV (coro_current);
1719 AV *av = (AV *)mg->mg_obj; 1844 struct coro *coro = (struct coro *)frame->data;
1720 1845
1721 abort (); 1846 if (!coro->invoke_cb)
1847 return 1; /* loop till we have invoke */
1848 else
1849 {
1850 hv_store (hv, "desc", sizeof ("desc") - 1,
1851 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1852
1853 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1854
1855 {
1856 dSP;
1857 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1858 PUTBACK;
1859 }
1860
1861 SvREFCNT_dec (GvAV (PL_defgv));
1862 GvAV (PL_defgv) = coro->invoke_av;
1863 coro->invoke_av = 0;
1864
1865 return 0;
1866 }
1867}
1868
1869static void
1870slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1871{
1872 HV *hv = (HV *)SvRV (coro_current);
1873 struct coro *coro = SvSTATE_hv ((SV *)hv);
1874
1875 if (expect_true (coro->saved_deffh))
1876 {
1877 /* subsequent iteration */
1878 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1879 coro->saved_deffh = 0;
1880
1881 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1882 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1883 {
1884 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1885 coro->invoke_av = newAV ();
1886
1887 frame->prepare = prepare_nop;
1888 }
1889 else
1890 {
1891 av_clear (GvAV (PL_defgv));
1892 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1893
1894 coro->prio = 0;
1895
1896 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1897 api_trace (aTHX_ coro_current, 0);
1898
1899 frame->prepare = prepare_schedule;
1900 av_push (av_async_pool, SvREFCNT_inc (hv));
1901 }
1902 }
1903 else
1904 {
1905 /* first iteration, simply fall through */
1906 frame->prepare = prepare_nop;
1907 }
1908
1909 frame->check = slf_check_pool_handler;
1910 frame->data = (void *)coro;
1911}
1912
1913/*****************************************************************************/
1914/* rouse callback */
1915
1916#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1917
1918static void
1919coro_rouse_callback (pTHX_ CV *cv)
1920{
1921 dXSARGS;
1922 SV *data = (SV *)GENSUB_ARG;
1923
1924 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1925 {
1926 /* first call, set args */
1927 AV *av = newAV ();
1928 SV *coro = SvRV (data);
1929
1930 SvRV_set (data, (SV *)av);
1931 api_ready (aTHX_ coro);
1932 SvREFCNT_dec (coro);
1933
1934 /* better take a full copy of the arguments */
1935 while (items--)
1936 av_store (av, items, newSVsv (ST (items)));
1937 }
1938
1939 XSRETURN_EMPTY;
1940}
1941
1942static int
1943slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1944{
1945 SV *data = (SV *)frame->data;
1946
1947 if (CORO_THROW)
1948 return 0;
1949
1950 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1951 return 1;
1952
1953 /* now push all results on the stack */
1954 {
1955 dSP;
1956 AV *av = (AV *)SvRV (data);
1957 int i;
1958
1959 EXTEND (SP, AvFILLp (av) + 1);
1960 for (i = 0; i <= AvFILLp (av); ++i)
1961 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1962
1963 /* we have stolen the elements, so ste length to zero and free */
1964 AvFILLp (av) = -1;
1965 av_undef (av);
1966
1967 PUTBACK;
1968 }
1722 1969
1723 return 0; 1970 return 0;
1724} 1971}
1725 1972
1726static MGVTBL coro_gensub_vtbl = { 1973static void
1727 0, 0, 0, 0, 1974slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1728 coro_gensub_free 1975{
1729}; 1976 SV *cb;
1730#endif 1977
1978 if (items)
1979 cb = arg [0];
1980 else
1981 {
1982 struct coro *coro = SvSTATE_current;
1983
1984 if (!coro->rouse_cb)
1985 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1986
1987 cb = sv_2mortal (coro->rouse_cb);
1988 coro->rouse_cb = 0;
1989 }
1990
1991 if (!SvROK (cb)
1992 || SvTYPE (SvRV (cb)) != SVt_PVCV
1993 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1994 croak ("Coro::rouse_wait called with illegal callback argument,");
1995
1996 {
1997 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1998 SV *data = (SV *)GENSUB_ARG;
1999
2000 frame->data = (void *)data;
2001 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2002 frame->check = slf_check_rouse_wait;
2003 }
2004}
2005
2006static SV *
2007coro_new_rouse_cb (pTHX)
2008{
2009 HV *hv = (HV *)SvRV (coro_current);
2010 struct coro *coro = SvSTATE_hv (hv);
2011 SV *data = newRV_inc ((SV *)hv);
2012 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2013
2014 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2015 SvREFCNT_dec (data); /* magicext increases the refcount */
2016
2017 SvREFCNT_dec (coro->rouse_cb);
2018 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2019
2020 return cb;
2021}
2022
2023/*****************************************************************************/
2024/* schedule-like-function opcode (SLF) */
2025
2026static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2027static const CV *slf_cv;
2028static SV **slf_argv;
2029static int slf_argc, slf_arga; /* count, allocated */
2030static I32 slf_ax; /* top of stack, for restore */
2031
2032/* this restores the stack in the case we patched the entersub, to */
2033/* recreate the stack frame as perl will on following calls */
2034/* since entersub cleared the stack */
2035static OP *
2036pp_restore (pTHX)
2037{
2038 int i;
2039 SV **SP = PL_stack_base + slf_ax;
2040
2041 PUSHMARK (SP);
2042
2043 EXTEND (SP, slf_argc + 1);
2044
2045 for (i = 0; i < slf_argc; ++i)
2046 PUSHs (sv_2mortal (slf_argv [i]));
2047
2048 PUSHs ((SV *)CvGV (slf_cv));
2049
2050 RETURNOP (slf_restore.op_first);
2051}
2052
2053static void
2054slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2055{
2056 SV **arg = (SV **)slf_frame.data;
2057
2058 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2059}
2060
2061static void
2062slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2063{
2064 if (items != 2)
2065 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2066
2067 frame->prepare = slf_prepare_transfer;
2068 frame->check = slf_check_nop;
2069 frame->data = (void *)arg; /* let's hope it will stay valid */
2070}
2071
2072static void
2073slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{
2075 frame->prepare = prepare_schedule;
2076 frame->check = slf_check_nop;
2077}
2078
2079static void
2080slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2081{
2082 struct coro *next = (struct coro *)slf_frame.data;
2083
2084 SvREFCNT_inc_NN (next->hv);
2085 prepare_schedule_to (aTHX_ ta, next);
2086}
2087
2088static void
2089slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2090{
2091 if (!items)
2092 croak ("Coro::schedule_to expects a coroutine argument, caught");
2093
2094 frame->data = (void *)SvSTATE (arg [0]);
2095 frame->prepare = slf_prepare_schedule_to;
2096 frame->check = slf_check_nop;
2097}
2098
2099static void
2100slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2101{
2102 api_ready (aTHX_ SvRV (coro_current));
2103
2104 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2105}
2106
2107static void
2108slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2109{
2110 frame->prepare = prepare_cede;
2111 frame->check = slf_check_nop;
2112}
2113
2114static void
2115slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2116{
2117 frame->prepare = prepare_cede_notself;
2118 frame->check = slf_check_nop;
2119}
2120
2121/*
2122 * these not obviously related functions are all rolled into one
2123 * function to increase chances that they all will call transfer with the same
2124 * stack offset
2125 * SLF stands for "schedule-like-function".
2126 */
2127static OP *
2128pp_slf (pTHX)
2129{
2130 I32 checkmark; /* mark SP to see how many elements check has pushed */
2131
2132 /* set up the slf frame, unless it has already been set-up */
2133 /* the latter happens when a new coro has been started */
2134 /* or when a new cctx was attached to an existing coroutine */
2135 if (expect_true (!slf_frame.prepare))
2136 {
2137 /* first iteration */
2138 dSP;
2139 SV **arg = PL_stack_base + TOPMARK + 1;
2140 int items = SP - arg; /* args without function object */
2141 SV *gv = *sp;
2142
2143 /* do a quick consistency check on the "function" object, and if it isn't */
2144 /* for us, divert to the real entersub */
2145 if (SvTYPE (gv) != SVt_PVGV
2146 || !GvCV (gv)
2147 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2148 return PL_ppaddr[OP_ENTERSUB](aTHX);
2149
2150 if (!(PL_op->op_flags & OPf_STACKED))
2151 {
2152 /* ampersand-form of call, use @_ instead of stack */
2153 AV *av = GvAV (PL_defgv);
2154 arg = AvARRAY (av);
2155 items = AvFILLp (av) + 1;
2156 }
2157
2158 /* now call the init function, which needs to set up slf_frame */
2159 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2160 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2161
2162 /* pop args */
2163 SP = PL_stack_base + POPMARK;
2164
2165 PUTBACK;
2166 }
2167
2168 /* now that we have a slf_frame, interpret it! */
2169 /* we use a callback system not to make the code needlessly */
2170 /* complicated, but so we can run multiple perl coros from one cctx */
2171
2172 do
2173 {
2174 struct coro_transfer_args ta;
2175
2176 slf_frame.prepare (aTHX_ &ta);
2177 TRANSFER (ta, 0);
2178
2179 checkmark = PL_stack_sp - PL_stack_base;
2180 }
2181 while (slf_frame.check (aTHX_ &slf_frame));
2182
2183 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2184
2185 /* exception handling */
2186 if (expect_false (CORO_THROW))
2187 {
2188 SV *exception = sv_2mortal (CORO_THROW);
2189
2190 CORO_THROW = 0;
2191 sv_setsv (ERRSV, exception);
2192 croak (0);
2193 }
2194
2195 /* return value handling - mostly like entersub */
2196 /* make sure we put something on the stack in scalar context */
2197 if (GIMME_V == G_SCALAR)
2198 {
2199 dSP;
2200 SV **bot = PL_stack_base + checkmark;
2201
2202 if (sp == bot) /* too few, push undef */
2203 bot [1] = &PL_sv_undef;
2204 else if (sp != bot + 1) /* too many, take last one */
2205 bot [1] = *sp;
2206
2207 SP = bot + 1;
2208
2209 PUTBACK;
2210 }
2211
2212 return NORMAL;
2213}
2214
2215static void
2216api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2217{
2218 int i;
2219 SV **arg = PL_stack_base + ax;
2220 int items = PL_stack_sp - arg + 1;
2221
2222 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2223
2224 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2225 && PL_op->op_ppaddr != pp_slf)
2226 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2227
2228 CvFLAGS (cv) |= CVf_SLF;
2229 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2230 slf_cv = cv;
2231
2232 /* we patch the op, and then re-run the whole call */
2233 /* we have to put the same argument on the stack for this to work */
2234 /* and this will be done by pp_restore */
2235 slf_restore.op_next = (OP *)&slf_restore;
2236 slf_restore.op_type = OP_CUSTOM;
2237 slf_restore.op_ppaddr = pp_restore;
2238 slf_restore.op_first = PL_op;
2239
2240 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2241
2242 if (PL_op->op_flags & OPf_STACKED)
2243 {
2244 if (items > slf_arga)
2245 {
2246 slf_arga = items;
2247 free (slf_argv);
2248 slf_argv = malloc (slf_arga * sizeof (SV *));
2249 }
2250
2251 slf_argc = items;
2252
2253 for (i = 0; i < items; ++i)
2254 slf_argv [i] = SvREFCNT_inc (arg [i]);
2255 }
2256 else
2257 slf_argc = 0;
2258
2259 PL_op->op_ppaddr = pp_slf;
2260 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2261
2262 PL_op = (OP *)&slf_restore;
2263}
1731 2264
1732/*****************************************************************************/ 2265/*****************************************************************************/
1733/* PerlIO::cede */ 2266/* PerlIO::cede */
1734 2267
1735typedef struct 2268typedef struct
… …
1763 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2296 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1764 double now = nvtime (); 2297 double now = nvtime ();
1765 2298
1766 if (now >= self->next) 2299 if (now >= self->next)
1767 { 2300 {
1768 api_cede (); 2301 api_cede (aTHX);
1769 self->next = now + self->every; 2302 self->next = now + self->every;
1770 } 2303 }
1771 2304
1772 return PerlIOBuf_flush (aTHX_ f); 2305 return PerlIOBuf_flush (aTHX_ f);
1773} 2306}
… …
1802 PerlIOBuf_get_ptr, 2335 PerlIOBuf_get_ptr,
1803 PerlIOBuf_get_cnt, 2336 PerlIOBuf_get_cnt,
1804 PerlIOBuf_set_ptrcnt, 2337 PerlIOBuf_set_ptrcnt,
1805}; 2338};
1806 2339
2340/*****************************************************************************/
2341/* Coro::Semaphore & Coro::Signal */
2342
2343static SV *
2344coro_waitarray_new (pTHX_ int count)
2345{
2346 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2347 AV *av = newAV ();
2348 SV **ary;
2349
2350 /* unfortunately, building manually saves memory */
2351 Newx (ary, 2, SV *);
2352 AvALLOC (av) = ary;
2353 /*AvARRAY (av) = ary;*/
2354 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2355 AvMAX (av) = 1;
2356 AvFILLp (av) = 0;
2357 ary [0] = newSViv (count);
2358
2359 return newRV_noinc ((SV *)av);
2360}
2361
2362/* semaphore */
2363
2364static void
2365coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2366{
2367 SV *count_sv = AvARRAY (av)[0];
2368 IV count = SvIVX (count_sv);
2369
2370 count += adjust;
2371 SvIVX (count_sv) = count;
2372
2373 /* now wake up as many waiters as are expected to lock */
2374 while (count > 0 && AvFILLp (av) > 0)
2375 {
2376 SV *cb;
2377
2378 /* swap first two elements so we can shift a waiter */
2379 AvARRAY (av)[0] = AvARRAY (av)[1];
2380 AvARRAY (av)[1] = count_sv;
2381 cb = av_shift (av);
2382
2383 if (SvOBJECT (cb))
2384 {
2385 api_ready (aTHX_ cb);
2386 --count;
2387 }
2388 else if (SvTYPE (cb) == SVt_PVCV)
2389 {
2390 dSP;
2391 PUSHMARK (SP);
2392 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2393 PUTBACK;
2394 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2395 }
2396
2397 SvREFCNT_dec (cb);
2398 }
2399}
2400
2401static void
2402coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2403{
2404 /* call $sem->adjust (0) to possibly wake up some other waiters */
2405 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2406}
2407
2408static int
2409slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2410{
2411 AV *av = (AV *)frame->data;
2412 SV *count_sv = AvARRAY (av)[0];
2413
2414 /* if we are about to throw, don't actually acquire the lock, just throw */
2415 if (CORO_THROW)
2416 return 0;
2417 else if (SvIVX (count_sv) > 0)
2418 {
2419 SvSTATE_current->on_destroy = 0;
2420
2421 if (acquire)
2422 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2423 else
2424 coro_semaphore_adjust (aTHX_ av, 0);
2425
2426 return 0;
2427 }
2428 else
2429 {
2430 int i;
2431 /* if we were woken up but can't down, we look through the whole */
2432 /* waiters list and only add us if we aren't in there already */
2433 /* this avoids some degenerate memory usage cases */
2434
2435 for (i = 1; i <= AvFILLp (av); ++i)
2436 if (AvARRAY (av)[i] == SvRV (coro_current))
2437 return 1;
2438
2439 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2440 return 1;
2441 }
2442}
2443
2444static int
2445slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2446{
2447 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2448}
2449
2450static int
2451slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2452{
2453 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2454}
2455
2456static void
2457slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2458{
2459 AV *av = (AV *)SvRV (arg [0]);
2460
2461 if (SvIVX (AvARRAY (av)[0]) > 0)
2462 {
2463 frame->data = (void *)av;
2464 frame->prepare = prepare_nop;
2465 }
2466 else
2467 {
2468 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2469
2470 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2471 frame->prepare = prepare_schedule;
2472
2473 /* to avoid race conditions when a woken-up coro gets terminated */
2474 /* we arrange for a temporary on_destroy that calls adjust (0) */
2475 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2476 }
2477}
2478
2479static void
2480slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2481{
2482 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2483 frame->check = slf_check_semaphore_down;
2484}
2485
2486static void
2487slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2488{
2489 if (items >= 2)
2490 {
2491 /* callback form */
2492 AV *av = (AV *)SvRV (arg [0]);
2493 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2494
2495 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2496
2497 if (SvIVX (AvARRAY (av)[0]) > 0)
2498 coro_semaphore_adjust (aTHX_ av, 0);
2499
2500 frame->prepare = prepare_nop;
2501 frame->check = slf_check_nop;
2502 }
2503 else
2504 {
2505 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2506 frame->check = slf_check_semaphore_wait;
2507 }
2508}
2509
2510/* signal */
2511
2512static void
2513coro_signal_wake (pTHX_ AV *av, int count)
2514{
2515 SvIVX (AvARRAY (av)[0]) = 0;
2516
2517 /* now signal count waiters */
2518 while (count > 0 && AvFILLp (av) > 0)
2519 {
2520 SV *cb;
2521
2522 /* swap first two elements so we can shift a waiter */
2523 cb = AvARRAY (av)[0];
2524 AvARRAY (av)[0] = AvARRAY (av)[1];
2525 AvARRAY (av)[1] = cb;
2526
2527 cb = av_shift (av);
2528
2529 api_ready (aTHX_ cb);
2530 sv_setiv (cb, 0); /* signal waiter */
2531 SvREFCNT_dec (cb);
2532
2533 --count;
2534 }
2535}
2536
2537static int
2538slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2539{
2540 /* if we are about to throw, also stop waiting */
2541 return SvROK ((SV *)frame->data) && !CORO_THROW;
2542}
2543
2544static void
2545slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2546{
2547 AV *av = (AV *)SvRV (arg [0]);
2548
2549 if (SvIVX (AvARRAY (av)[0]))
2550 {
2551 SvIVX (AvARRAY (av)[0]) = 0;
2552 frame->prepare = prepare_nop;
2553 frame->check = slf_check_nop;
2554 }
2555 else
2556 {
2557 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2558
2559 av_push (av, waiter);
2560
2561 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2562 frame->prepare = prepare_schedule;
2563 frame->check = slf_check_signal_wait;
2564 }
2565}
2566
2567/*****************************************************************************/
2568/* Coro::AIO */
2569
2570#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2571
2572/* helper storage struct */
2573struct io_state
2574{
2575 int errorno;
2576 I32 laststype; /* U16 in 5.10.0 */
2577 int laststatval;
2578 Stat_t statcache;
2579};
2580
2581static void
2582coro_aio_callback (pTHX_ CV *cv)
2583{
2584 dXSARGS;
2585 AV *state = (AV *)GENSUB_ARG;
2586 SV *coro = av_pop (state);
2587 SV *data_sv = newSV (sizeof (struct io_state));
2588
2589 av_extend (state, items - 1);
2590
2591 sv_upgrade (data_sv, SVt_PV);
2592 SvCUR_set (data_sv, sizeof (struct io_state));
2593 SvPOK_only (data_sv);
2594
2595 {
2596 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2597
2598 data->errorno = errno;
2599 data->laststype = PL_laststype;
2600 data->laststatval = PL_laststatval;
2601 data->statcache = PL_statcache;
2602 }
2603
2604 /* now build the result vector out of all the parameters and the data_sv */
2605 {
2606 int i;
2607
2608 for (i = 0; i < items; ++i)
2609 av_push (state, SvREFCNT_inc_NN (ST (i)));
2610 }
2611
2612 av_push (state, data_sv);
2613
2614 api_ready (aTHX_ coro);
2615 SvREFCNT_dec (coro);
2616 SvREFCNT_dec ((AV *)state);
2617}
2618
2619static int
2620slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2621{
2622 AV *state = (AV *)frame->data;
2623
2624 /* if we are about to throw, return early */
2625 /* this does not cancel the aio request, but at least */
2626 /* it quickly returns */
2627 if (CORO_THROW)
2628 return 0;
2629
2630 /* one element that is an RV? repeat! */
2631 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2632 return 1;
2633
2634 /* restore status */
2635 {
2636 SV *data_sv = av_pop (state);
2637 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2638
2639 errno = data->errorno;
2640 PL_laststype = data->laststype;
2641 PL_laststatval = data->laststatval;
2642 PL_statcache = data->statcache;
2643
2644 SvREFCNT_dec (data_sv);
2645 }
2646
2647 /* push result values */
2648 {
2649 dSP;
2650 int i;
2651
2652 EXTEND (SP, AvFILLp (state) + 1);
2653 for (i = 0; i <= AvFILLp (state); ++i)
2654 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2655
2656 PUTBACK;
2657 }
2658
2659 return 0;
2660}
2661
2662static void
2663slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2664{
2665 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2666 SV *coro_hv = SvRV (coro_current);
2667 struct coro *coro = SvSTATE_hv (coro_hv);
2668
2669 /* put our coroutine id on the state arg */
2670 av_push (state, SvREFCNT_inc_NN (coro_hv));
2671
2672 /* first see whether we have a non-zero priority and set it as AIO prio */
2673 if (coro->prio)
2674 {
2675 dSP;
2676
2677 static SV *prio_cv;
2678 static SV *prio_sv;
2679
2680 if (expect_false (!prio_cv))
2681 {
2682 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2683 prio_sv = newSViv (0);
2684 }
2685
2686 PUSHMARK (SP);
2687 sv_setiv (prio_sv, coro->prio);
2688 XPUSHs (prio_sv);
2689
2690 PUTBACK;
2691 call_sv (prio_cv, G_VOID | G_DISCARD);
2692 }
2693
2694 /* now call the original request */
2695 {
2696 dSP;
2697 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2698 int i;
2699
2700 PUSHMARK (SP);
2701
2702 /* first push all args to the stack */
2703 EXTEND (SP, items + 1);
2704
2705 for (i = 0; i < items; ++i)
2706 PUSHs (arg [i]);
2707
2708 /* now push the callback closure */
2709 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2710
2711 /* now call the AIO function - we assume our request is uncancelable */
2712 PUTBACK;
2713 call_sv ((SV *)req, G_VOID | G_DISCARD);
2714 }
2715
2716 /* now that the requets is going, we loop toll we have a result */
2717 frame->data = (void *)state;
2718 frame->prepare = prepare_schedule;
2719 frame->check = slf_check_aio_req;
2720}
2721
2722static void
2723coro_aio_req_xs (pTHX_ CV *cv)
2724{
2725 dXSARGS;
2726
2727 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2728
2729 XSRETURN_EMPTY;
2730}
2731
2732/*****************************************************************************/
2733
2734#if CORO_CLONE
2735# include "clone.c"
2736#endif
1807 2737
1808MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2738MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1809 2739
1810PROTOTYPES: DISABLE 2740PROTOTYPES: DISABLE
1811 2741
1812BOOT: 2742BOOT:
1813{ 2743{
1814#ifdef USE_ITHREADS 2744#ifdef USE_ITHREADS
1815 MUTEX_INIT (&coro_lock);
1816# if CORO_PTHREAD 2745# if CORO_PTHREAD
1817 coro_thx = PERL_GET_CONTEXT; 2746 coro_thx = PERL_GET_CONTEXT;
1818# endif 2747# endif
1819#endif 2748#endif
1820 BOOT_PAGESIZE; 2749 BOOT_PAGESIZE;
… …
1841 main_top_env = PL_top_env; 2770 main_top_env = PL_top_env;
1842 2771
1843 while (main_top_env->je_prev) 2772 while (main_top_env->je_prev)
1844 main_top_env = main_top_env->je_prev; 2773 main_top_env = main_top_env->je_prev;
1845 2774
2775 {
2776 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2777
2778 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2779 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2780
2781 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2782 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2783 }
2784
1846 coroapi.ver = CORO_API_VERSION; 2785 coroapi.ver = CORO_API_VERSION;
1847 coroapi.rev = CORO_API_REVISION; 2786 coroapi.rev = CORO_API_REVISION;
2787
1848 coroapi.transfer = api_transfer; 2788 coroapi.transfer = api_transfer;
2789
2790 coroapi.sv_state = SvSTATE_;
2791 coroapi.execute_slf = api_execute_slf;
2792 coroapi.prepare_nop = prepare_nop;
2793 coroapi.prepare_schedule = prepare_schedule;
2794 coroapi.prepare_cede = prepare_cede;
2795 coroapi.prepare_cede_notself = prepare_cede_notself;
1849 2796
1850 { 2797 {
1851 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2798 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1852 2799
1853 if (!svp) croak ("Time::HiRes is required"); 2800 if (!svp) croak ("Time::HiRes is required");
… …
1859 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2806 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1860} 2807}
1861 2808
1862SV * 2809SV *
1863new (char *klass, ...) 2810new (char *klass, ...)
2811 ALIAS:
2812 Coro::new = 1
1864 CODE: 2813 CODE:
1865{ 2814{
1866 struct coro *coro; 2815 struct coro *coro;
1867 MAGIC *mg; 2816 MAGIC *mg;
1868 HV *hv; 2817 HV *hv;
2818 CV *cb;
1869 int i; 2819 int i;
2820
2821 if (items > 1)
2822 {
2823 cb = coro_sv_2cv (aTHX_ ST (1));
2824
2825 if (!ix)
2826 {
2827 if (CvISXSUB (cb))
2828 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2829
2830 if (!CvROOT (cb))
2831 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2832 }
2833 }
1870 2834
1871 Newz (0, coro, 1, struct coro); 2835 Newz (0, coro, 1, struct coro);
1872 coro->args = newAV (); 2836 coro->args = newAV ();
1873 coro->flags = CF_NEW; 2837 coro->flags = CF_NEW;
1874 2838
… …
1879 coro->hv = hv = newHV (); 2843 coro->hv = hv = newHV ();
1880 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2844 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1881 mg->mg_flags |= MGf_DUP; 2845 mg->mg_flags |= MGf_DUP;
1882 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2846 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1883 2847
2848 if (items > 1)
2849 {
1884 av_extend (coro->args, items - 1); 2850 av_extend (coro->args, items - 1 + ix - 1);
2851
2852 if (ix)
2853 {
2854 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2855 cb = cv_coro_run;
2856 }
2857
2858 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2859
1885 for (i = 1; i < items; i++) 2860 for (i = 2; i < items; i++)
1886 av_push (coro->args, newSVsv (ST (i))); 2861 av_push (coro->args, newSVsv (ST (i)));
2862 }
1887} 2863}
1888 OUTPUT: 2864 OUTPUT:
1889 RETVAL 2865 RETVAL
1890 2866
1891# these not obviously related functions are all rolled into the same xs
1892# function to increase chances that they all will call transfer with the same
1893# stack offset
1894void 2867void
1895_set_stacklevel (...) 2868transfer (...)
1896 ALIAS: 2869 PROTOTYPE: $$
1897 Coro::State::transfer = 1 2870 CODE:
1898 Coro::schedule = 2 2871 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1899 Coro::cede = 3
1900 Coro::cede_notself = 4
1901 CODE:
1902{
1903 struct transfer_args ta;
1904
1905 PUTBACK;
1906 switch (ix)
1907 {
1908 case 0:
1909 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (ST (0)));
1910 break;
1911
1912 case 1:
1913 if (items != 2)
1914 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1915
1916 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1917 break;
1918
1919 case 2:
1920 prepare_schedule (aTHX_ &ta);
1921 break;
1922
1923 case 3:
1924 prepare_cede (aTHX_ &ta);
1925 break;
1926
1927 case 4:
1928 if (!prepare_cede_notself (aTHX_ &ta))
1929 XSRETURN_EMPTY;
1930
1931 break;
1932 }
1933 SPAGAIN;
1934
1935 BARRIER;
1936 PUTBACK;
1937 TRANSFER (ta, 0);
1938 SPAGAIN; /* might be the sp of a different coroutine now */
1939 /* be extra careful not to ever do anything after TRANSFER */
1940}
1941 2872
1942bool 2873bool
1943_destroy (SV *coro_sv) 2874_destroy (SV *coro_sv)
1944 CODE: 2875 CODE:
1945 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2876 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1950_exit (int code) 2881_exit (int code)
1951 PROTOTYPE: $ 2882 PROTOTYPE: $
1952 CODE: 2883 CODE:
1953 _exit (code); 2884 _exit (code);
1954 2885
2886#if CORO_CLONE
2887
2888SV *
2889clone (Coro::State coro)
2890 CODE:
2891{
2892 struct coro *ncoro = coro_clone (coro);
2893 MAGIC *mg;
2894 /* TODO: too much duplication */
2895 ncoro->hv = newHV ();
2896 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2897 mg->mg_flags |= MGf_DUP;
2898 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2899}
2900 OUTPUT:
2901 RETVAL
2902
2903#endif
2904
1955int 2905int
1956cctx_stacksize (int new_stacksize = 0) 2906cctx_stacksize (int new_stacksize = 0)
2907 PROTOTYPE: ;$
1957 CODE: 2908 CODE:
1958 RETVAL = cctx_stacksize; 2909 RETVAL = cctx_stacksize;
1959 if (new_stacksize) 2910 if (new_stacksize)
1960 { 2911 {
1961 cctx_stacksize = new_stacksize; 2912 cctx_stacksize = new_stacksize;
… …
1964 OUTPUT: 2915 OUTPUT:
1965 RETVAL 2916 RETVAL
1966 2917
1967int 2918int
1968cctx_max_idle (int max_idle = 0) 2919cctx_max_idle (int max_idle = 0)
2920 PROTOTYPE: ;$
1969 CODE: 2921 CODE:
1970 RETVAL = cctx_max_idle; 2922 RETVAL = cctx_max_idle;
1971 if (max_idle > 1) 2923 if (max_idle > 1)
1972 cctx_max_idle = max_idle; 2924 cctx_max_idle = max_idle;
1973 OUTPUT: 2925 OUTPUT:
1974 RETVAL 2926 RETVAL
1975 2927
1976int 2928int
1977cctx_count () 2929cctx_count ()
2930 PROTOTYPE:
1978 CODE: 2931 CODE:
1979 RETVAL = cctx_count; 2932 RETVAL = cctx_count;
1980 OUTPUT: 2933 OUTPUT:
1981 RETVAL 2934 RETVAL
1982 2935
1983int 2936int
1984cctx_idle () 2937cctx_idle ()
2938 PROTOTYPE:
1985 CODE: 2939 CODE:
1986 RETVAL = cctx_idle; 2940 RETVAL = cctx_idle;
1987 OUTPUT: 2941 OUTPUT:
1988 RETVAL 2942 RETVAL
1989 2943
1990void 2944void
1991list () 2945list ()
2946 PROTOTYPE:
1992 PPCODE: 2947 PPCODE:
1993{ 2948{
1994 struct coro *coro; 2949 struct coro *coro;
1995 for (coro = coro_first; coro; coro = coro->next) 2950 for (coro = coro_first; coro; coro = coro->next)
1996 if (coro->hv) 2951 if (coro->hv)
… …
2058 3013
2059void 3014void
2060throw (Coro::State self, SV *throw = &PL_sv_undef) 3015throw (Coro::State self, SV *throw = &PL_sv_undef)
2061 PROTOTYPE: $;$ 3016 PROTOTYPE: $;$
2062 CODE: 3017 CODE:
3018{
3019 struct coro *current = SvSTATE_current;
3020 SV **throwp = self == current ? &CORO_THROW : &self->except;
2063 SvREFCNT_dec (self->throw); 3021 SvREFCNT_dec (*throwp);
2064 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3022 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3023}
2065 3024
2066void 3025void
2067api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3026api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3027 PROTOTYPE: $;$
3028 C_ARGS: aTHX_ coro, flags
2068 3029
2069SV * 3030SV *
2070has_cctx (Coro::State coro) 3031has_cctx (Coro::State coro)
2071 PROTOTYPE: $ 3032 PROTOTYPE: $
2072 CODE: 3033 CODE:
… …
2096 OUTPUT: 3057 OUTPUT:
2097 RETVAL 3058 RETVAL
2098 3059
2099void 3060void
2100force_cctx () 3061force_cctx ()
3062 PROTOTYPE:
2101 CODE: 3063 CODE:
2102 struct coro *coro = SvSTATE (coro_current);
2103 coro->cctx->idle_sp = 0; 3064 SvSTATE_current->cctx->idle_sp = 0;
2104 3065
2105void 3066void
2106swap_defsv (Coro::State self) 3067swap_defsv (Coro::State self)
2107 PROTOTYPE: $ 3068 PROTOTYPE: $
2108 ALIAS: 3069 ALIAS:
2109 swap_defav = 1 3070 swap_defav = 1
2110 CODE: 3071 CODE:
2111 if (!self->slot) 3072 if (!self->slot)
2112 croak ("cannot swap state with coroutine that has no saved state"); 3073 croak ("cannot swap state with coroutine that has no saved state,");
2113 else 3074 else
2114 { 3075 {
2115 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3076 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2116 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3077 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2117 3078
2118 SV *tmp = *src; *src = *dst; *dst = tmp; 3079 SV *tmp = *src; *src = *dst; *dst = tmp;
2119 } 3080 }
2120 3081
3082
2121MODULE = Coro::State PACKAGE = Coro 3083MODULE = Coro::State PACKAGE = Coro
2122 3084
2123BOOT: 3085BOOT:
2124{ 3086{
2125 int i; 3087 int i;
2126 3088
2127 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2128 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3089 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2129 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3090 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2130 3091 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3092 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2131 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3093 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2132 SvREADONLY_on (coro_current); 3094 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3095 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3096 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3097
3098 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3099 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3100 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3101 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2133 3102
2134 coro_stash = gv_stashpv ("Coro", TRUE); 3103 coro_stash = gv_stashpv ("Coro", TRUE);
2135 3104
2136 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3105 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2137 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3106 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2142 3111
2143 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3112 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2144 coro_ready[i] = newAV (); 3113 coro_ready[i] = newAV ();
2145 3114
2146 { 3115 {
2147 SV *sv = perl_get_sv ("Coro::API", TRUE); 3116 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2148 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2149 3117
2150 coroapi.schedule = api_schedule; 3118 coroapi.schedule = api_schedule;
3119 coroapi.schedule_to = api_schedule_to;
2151 coroapi.cede = api_cede; 3120 coroapi.cede = api_cede;
2152 coroapi.cede_notself = api_cede_notself; 3121 coroapi.cede_notself = api_cede_notself;
2153 coroapi.ready = api_ready; 3122 coroapi.ready = api_ready;
2154 coroapi.is_ready = api_is_ready; 3123 coroapi.is_ready = api_is_ready;
2155 coroapi.nready = &coro_nready; 3124 coroapi.nready = coro_nready;
2156 coroapi.current = coro_current; 3125 coroapi.current = coro_current;
2157 3126
2158 GCoroAPI = &coroapi; 3127 /*GCoroAPI = &coroapi;*/
2159 sv_setiv (sv, (IV)&coroapi); 3128 sv_setiv (sv, (IV)&coroapi);
2160 SvREADONLY_on (sv); 3129 SvREADONLY_on (sv);
2161 } 3130 }
2162} 3131}
3132
3133void
3134terminate (...)
3135 CODE:
3136 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3137
3138void
3139schedule (...)
3140 CODE:
3141 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3142
3143void
3144schedule_to (...)
3145 CODE:
3146 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3147
3148void
3149cede_to (...)
3150 CODE:
3151 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3152
3153void
3154cede (...)
3155 CODE:
3156 CORO_EXECUTE_SLF_XS (slf_init_cede);
3157
3158void
3159cede_notself (...)
3160 CODE:
3161 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3162
3163void
3164_cancel (Coro::State self)
3165 CODE:
3166 coro_state_destroy (aTHX_ self);
3167 coro_call_on_destroy (aTHX_ self);
2163 3168
2164void 3169void
2165_set_current (SV *current) 3170_set_current (SV *current)
2166 PROTOTYPE: $ 3171 PROTOTYPE: $
2167 CODE: 3172 CODE:
… …
2170 3175
2171void 3176void
2172_set_readyhook (SV *hook) 3177_set_readyhook (SV *hook)
2173 PROTOTYPE: $ 3178 PROTOTYPE: $
2174 CODE: 3179 CODE:
2175 LOCK;
2176 SvREFCNT_dec (coro_readyhook); 3180 SvREFCNT_dec (coro_readyhook);
2177 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3181 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2178 UNLOCK;
2179 3182
2180int 3183int
2181prio (Coro::State coro, int newprio = 0) 3184prio (Coro::State coro, int newprio = 0)
3185 PROTOTYPE: $;$
2182 ALIAS: 3186 ALIAS:
2183 nice = 1 3187 nice = 1
2184 CODE: 3188 CODE:
2185{ 3189{
2186 RETVAL = coro->prio; 3190 RETVAL = coro->prio;
… …
2201 3205
2202SV * 3206SV *
2203ready (SV *self) 3207ready (SV *self)
2204 PROTOTYPE: $ 3208 PROTOTYPE: $
2205 CODE: 3209 CODE:
2206 RETVAL = boolSV (api_ready (self)); 3210 RETVAL = boolSV (api_ready (aTHX_ self));
2207 OUTPUT: 3211 OUTPUT:
2208 RETVAL 3212 RETVAL
2209 3213
2210int 3214int
2211nready (...) 3215nready (...)
… …
2213 CODE: 3217 CODE:
2214 RETVAL = coro_nready; 3218 RETVAL = coro_nready;
2215 OUTPUT: 3219 OUTPUT:
2216 RETVAL 3220 RETVAL
2217 3221
2218# for async_pool speedup
2219void 3222void
2220_pool_1 (SV *cb) 3223_pool_handler (...)
2221 CODE: 3224 CODE:
2222{ 3225 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2223 struct coro *coro = SvSTATE (coro_current);
2224 HV *hv = (HV *)SvRV (coro_current);
2225 AV *defav = GvAV (PL_defgv);
2226 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2227 AV *invoke_av;
2228 int i, len;
2229 3226
2230 if (!invoke) 3227void
3228async_pool (SV *cv, ...)
3229 PROTOTYPE: &@
3230 PPCODE:
3231{
3232 HV *hv = (HV *)av_pop (av_async_pool);
3233 AV *av = newAV ();
3234 SV *cb = ST (0);
3235 int i;
3236
3237 av_extend (av, items - 2);
3238 for (i = 1; i < items; ++i)
3239 av_push (av, SvREFCNT_inc_NN (ST (i)));
3240
3241 if ((SV *)hv == &PL_sv_undef)
2231 { 3242 {
2232 SV *old = PL_diehook; 3243 PUSHMARK (SP);
2233 PL_diehook = 0; 3244 EXTEND (SP, 2);
2234 SvREFCNT_dec (old); 3245 PUSHs (sv_Coro);
2235 croak ("\3async_pool terminate\2\n"); 3246 PUSHs ((SV *)cv_pool_handler);
3247 PUTBACK;
3248 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3249 SPAGAIN;
3250
3251 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2236 } 3252 }
2237 3253
2238 SvREFCNT_dec (coro->saved_deffh);
2239 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2240
2241 hv_store (hv, "desc", sizeof ("desc") - 1,
2242 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2243
2244 invoke_av = (AV *)SvRV (invoke);
2245 len = av_len (invoke_av);
2246
2247 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2248
2249 if (len > 0)
2250 { 3254 {
2251 av_fill (defav, len - 1); 3255 struct coro *coro = SvSTATE_hv (hv);
2252 for (i = 0; i < len; ++i) 3256
2253 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3257 assert (!coro->invoke_cb);
3258 assert (!coro->invoke_av);
3259 coro->invoke_cb = SvREFCNT_inc (cb);
3260 coro->invoke_av = av;
2254 } 3261 }
2255 3262
3263 api_ready (aTHX_ (SV *)hv);
3264
3265 if (GIMME_V != G_VOID)
3266 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3267 else
2256 SvREFCNT_dec (invoke); 3268 SvREFCNT_dec (hv);
2257} 3269}
2258 3270
2259void 3271SV *
2260_pool_2 (SV *cb) 3272rouse_cb ()
3273 PROTOTYPE:
2261 CODE: 3274 CODE:
2262{ 3275 RETVAL = coro_new_rouse_cb (aTHX);
2263 struct coro *coro = SvSTATE (coro_current);
2264
2265 sv_setsv (cb, &PL_sv_undef);
2266
2267 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2268 coro->saved_deffh = 0;
2269
2270 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2271 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2272 {
2273 SV *old = PL_diehook;
2274 PL_diehook = 0;
2275 SvREFCNT_dec (old);
2276 croak ("\3async_pool terminate\2\n");
2277 }
2278
2279 av_clear (GvAV (PL_defgv));
2280 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2281 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2282
2283 coro->prio = 0;
2284
2285 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2286 api_trace (coro_current, 0);
2287
2288 av_push (av_async_pool, newSVsv (coro_current));
2289}
2290
2291#if 0
2292
2293void
2294_generator_call (...)
2295 PROTOTYPE: @
2296 PPCODE:
2297 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2298 xxxx
2299 abort ();
2300
2301SV *
2302gensub (SV *sub, ...)
2303 PROTOTYPE: &;@
2304 CODE:
2305{
2306 struct coro *coro;
2307 MAGIC *mg;
2308 CV *xcv;
2309 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2310 int i;
2311
2312 CvGV (ncv) = CvGV (cv);
2313 CvFILE (ncv) = CvFILE (cv);
2314
2315 Newz (0, coro, 1, struct coro);
2316 coro->args = newAV ();
2317 coro->flags = CF_NEW;
2318
2319 av_extend (coro->args, items - 1);
2320 for (i = 1; i < items; i++)
2321 av_push (coro->args, newSVsv (ST (i)));
2322
2323 CvISXSUB_on (ncv);
2324 CvXSUBANY (ncv).any_ptr = (void *)coro;
2325
2326 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2327
2328 CvXSUB (ncv) = CvXSUB (xcv);
2329 CvANON_on (ncv);
2330
2331 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2332 RETVAL = newRV_noinc ((SV *)ncv);
2333}
2334 OUTPUT: 3276 OUTPUT:
2335 RETVAL 3277 RETVAL
2336 3278
2337#endif
2338
2339
2340MODULE = Coro::State PACKAGE = Coro::AIO
2341
2342void 3279void
2343_get_state (SV *self) 3280rouse_wait (...)
3281 PROTOTYPE: ;$
2344 PPCODE: 3282 PPCODE:
2345{ 3283 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2346 AV *defav = GvAV (PL_defgv);
2347 AV *av = newAV ();
2348 int i;
2349 SV *data_sv = newSV (sizeof (struct io_state));
2350 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2351 SvCUR_set (data_sv, sizeof (struct io_state));
2352 SvPOK_only (data_sv);
2353 3284
2354 data->errorno = errno;
2355 data->laststype = PL_laststype;
2356 data->laststatval = PL_laststatval;
2357 data->statcache = PL_statcache;
2358 3285
2359 av_extend (av, AvFILLp (defav) + 1 + 1); 3286MODULE = Coro::State PACKAGE = PerlIO::cede
2360 3287
2361 for (i = 0; i <= AvFILLp (defav); ++i) 3288BOOT:
2362 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3289 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2363 3290
2364 av_push (av, data_sv);
2365 3291
2366 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3292MODULE = Coro::State PACKAGE = Coro::Semaphore
2367 3293
2368 api_ready (self); 3294SV *
2369} 3295new (SV *klass, SV *count = 0)
3296 CODE:
3297 RETVAL = sv_bless (
3298 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3299 GvSTASH (CvGV (cv))
3300 );
3301 OUTPUT:
3302 RETVAL
3303
3304# helper for Coro::Channel
3305SV *
3306_alloc (int count)
3307 CODE:
3308 RETVAL = coro_waitarray_new (aTHX_ count);
3309 OUTPUT:
3310 RETVAL
3311
3312SV *
3313count (SV *self)
3314 CODE:
3315 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3316 OUTPUT:
3317 RETVAL
2370 3318
2371void 3319void
2372_set_state (SV *state) 3320up (SV *self, int adjust = 1)
2373 PROTOTYPE: $ 3321 ALIAS:
3322 adjust = 1
3323 CODE:
3324 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3325
3326void
3327down (...)
3328 CODE:
3329 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3330
3331void
3332wait (...)
3333 CODE:
3334 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3335
3336void
3337try (SV *self)
3338 PPCODE:
3339{
3340 AV *av = (AV *)SvRV (self);
3341 SV *count_sv = AvARRAY (av)[0];
3342 IV count = SvIVX (count_sv);
3343
3344 if (count > 0)
3345 {
3346 --count;
3347 SvIVX (count_sv) = count;
3348 XSRETURN_YES;
3349 }
3350 else
3351 XSRETURN_NO;
3352}
3353
3354void
3355waiters (SV *self)
3356 PPCODE:
3357{
3358 AV *av = (AV *)SvRV (self);
3359 int wcount = AvFILLp (av) + 1 - 1;
3360
3361 if (GIMME_V == G_SCALAR)
3362 XPUSHs (sv_2mortal (newSViv (wcount)));
3363 else
3364 {
3365 int i;
3366 EXTEND (SP, wcount);
3367 for (i = 1; i <= wcount; ++i)
3368 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3369 }
3370}
3371
3372MODULE = Coro::State PACKAGE = Coro::Signal
3373
3374SV *
3375new (SV *klass)
2374 PPCODE: 3376 CODE:
3377 RETVAL = sv_bless (
3378 coro_waitarray_new (aTHX_ 0),
3379 GvSTASH (CvGV (cv))
3380 );
3381 OUTPUT:
3382 RETVAL
3383
3384void
3385wait (...)
3386 CODE:
3387 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3388
3389void
3390broadcast (SV *self)
3391 CODE:
2375{ 3392{
2376 AV *av = (AV *)SvRV (state); 3393 AV *av = (AV *)SvRV (self);
2377 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3394 coro_signal_wake (aTHX_ av, AvFILLp (av));
2378 int i; 3395}
2379 3396
2380 errno = data->errorno; 3397void
2381 PL_laststype = data->laststype; 3398send (SV *self)
2382 PL_laststatval = data->laststatval; 3399 CODE:
2383 PL_statcache = data->statcache; 3400{
3401 AV *av = (AV *)SvRV (self);
2384 3402
2385 EXTEND (SP, AvFILLp (av)); 3403 if (AvFILLp (av))
2386 for (i = 0; i < AvFILLp (av); ++i) 3404 coro_signal_wake (aTHX_ av, 1);
2387 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3405 else
3406 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2388} 3407}
3408
3409IV
3410awaited (SV *self)
3411 CODE:
3412 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3413 OUTPUT:
3414 RETVAL
2389 3415
2390 3416
2391MODULE = Coro::State PACKAGE = Coro::AnyEvent 3417MODULE = Coro::State PACKAGE = Coro::AnyEvent
2392 3418
2393BOOT: 3419BOOT:
2394 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3420 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2395 3421
2396SV * 3422void
2397_schedule (...) 3423_schedule (...)
2398 PROTOTYPE: @
2399 CODE: 3424 CODE:
2400{ 3425{
2401 static int incede; 3426 static int incede;
2402 3427
2403 api_cede_notself (); 3428 api_cede_notself (aTHX);
2404 3429
2405 ++incede; 3430 ++incede;
2406 while (coro_nready >= incede && api_cede ()) 3431 while (coro_nready >= incede && api_cede (aTHX))
2407 ; 3432 ;
2408 3433
2409 sv_setsv (sv_activity, &PL_sv_undef); 3434 sv_setsv (sv_activity, &PL_sv_undef);
2410 if (coro_nready >= incede) 3435 if (coro_nready >= incede)
2411 { 3436 {
2412 PUSHMARK (SP); 3437 PUSHMARK (SP);
2413 PUTBACK; 3438 PUTBACK;
2414 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3439 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2415 SPAGAIN;
2416 } 3440 }
2417 3441
2418 --incede; 3442 --incede;
2419} 3443}
2420 3444
2421 3445
2422MODULE = Coro::State PACKAGE = PerlIO::cede 3446MODULE = Coro::State PACKAGE = Coro::AIO
2423 3447
2424BOOT: 3448void
2425 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3449_register (char *target, char *proto, SV *req)
3450 CODE:
3451{
3452 CV *req_cv = coro_sv_2cv (aTHX_ req);
3453 /* newXSproto doesn't return the CV on 5.8 */
3454 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3455 sv_setpv ((SV *)slf_cv, proto);
3456 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3457}
3458

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