ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.258 by root, Sun Nov 9 23:08:49 2008 UTC vs.
Revision 1.323 by root, Sat Nov 22 06:03:10 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
46# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
47#endif 47#endif
48 48
49#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 51#endif
55 52
56/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
57static int cctx_max_idle = 4; 54static int cctx_max_idle = 4;
58 55
59#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
64 61
65#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr 63# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
68# endif 65# endif
… …
98# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
99#endif 96#endif
100#ifndef newSV 97#ifndef newSV
101# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
102#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
103 109
104/* 5.8.7 */ 110/* 5.8.7 */
105#ifndef SvRV_set 111#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
107#endif 113#endif
… …
119# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 126#endif
121 127
122/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
124#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
125#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
133#else 144#else
134# define attribute(x) 145# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
137#endif 148#endif
138 149
139#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#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 159# if CORO_PTHREAD
152static void *coro_thx; 160static void *coro_thx;
153# endif 161# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 162#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};
176 163
177static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
178 169
179static U32 cctx_gen; 170static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 174static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180
187static GV *irsgv; /* $/ */ 181static GV *irsgv; /* $/ */
188static GV *stdoutgv; /* *STDOUT */ 182static GV *stdoutgv; /* *STDOUT */
189static SV *rv_diehook; 183static SV *rv_diehook;
190static SV *rv_warnhook; 184static SV *rv_warnhook;
191static HV *hv_sig; /* %SIG */ 185static HV *hv_sig; /* %SIG */
192 186
193/* async_pool helper stuff */ 187/* async_pool helper stuff */
194static SV *sv_pool_rss; 188static SV *sv_pool_rss;
195static SV *sv_pool_size; 189static SV *sv_pool_size;
190static SV *sv_async_pool_idle; /* description string */
196static AV *av_async_pool; 191static AV *av_async_pool; /* idle pool */
192static SV *sv_Coro; /* class string */
193static CV *cv_pool_handler;
194static CV *cv_coro_state_new;
197 195
198/* Coro::AnyEvent */ 196/* Coro::AnyEvent */
199static SV *sv_activity; 197static SV *sv_activity;
200 198
201static struct coro_cctx *cctx_first; 199static struct coro_cctx *cctx_first;
… …
209 CC_TRACE_LINE = 0x10, /* trace each statement */ 207 CC_TRACE_LINE = 0x10, /* trace each statement */
210 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 208 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
211}; 209};
212 210
213/* this is a structure representing a c-level coroutine */ 211/* this is a structure representing a c-level coroutine */
214typedef struct coro_cctx { 212typedef struct coro_cctx
213{
215 struct coro_cctx *next; 214 struct coro_cctx *next;
216 215
217 /* the stack */ 216 /* the stack */
218 void *sptr; 217 void *sptr;
219 size_t ssize; 218 size_t ssize;
… …
228#if CORO_USE_VALGRIND 227#if CORO_USE_VALGRIND
229 int valgrind_id; 228 int valgrind_id;
230#endif 229#endif
231 unsigned char flags; 230 unsigned char flags;
232} coro_cctx; 231} coro_cctx;
232
233coro_cctx *cctx_current; /* the currently running cctx */
234
235/*****************************************************************************/
233 236
234enum { 237enum {
235 CF_RUNNING = 0x0001, /* coroutine is running */ 238 CF_RUNNING = 0x0001, /* coroutine is running */
236 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
237 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
238 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
239}; 242};
240 243
241/* the structure where most of the perl state is stored, overlaid on the cxstack */ 244/* the structure where most of the perl state is stored, overlaid on the cxstack */
242typedef struct { 245typedef struct
246{
243 SV *defsv; 247 SV *defsv;
244 AV *defav; 248 AV *defav;
245 SV *errsv; 249 SV *errsv;
246 SV *irsgv; 250 SV *irsgv;
247#define VAR(name,type) type name; 251#define VAR(name,type) type name;
… …
251 255
252#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 256#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
253 257
254/* this is a structure representing a perl-level coroutine */ 258/* this is a structure representing a perl-level coroutine */
255struct coro { 259struct coro {
256 /* the c coroutine allocated to this perl coroutine, if any */ 260 /* the C coroutine allocated to this perl coroutine, if any */
257 coro_cctx *cctx; 261 coro_cctx *cctx;
258 262
259 /* process data */ 263 /* state data */
264 struct CoroSLF slf_frame; /* saved slf frame */
260 AV *mainstack; 265 AV *mainstack;
261 perl_slots *slot; /* basically the saved sp */ 266 perl_slots *slot; /* basically the saved sp */
262 267
268 CV *startcv; /* the CV to execute */
263 AV *args; /* data associated with this coroutine (initial args) */ 269 AV *args; /* data associated with this coroutine (initial args) */
264 int refcnt; /* coroutines are refcounted, yes */ 270 int refcnt; /* coroutines are refcounted, yes */
265 int flags; /* CF_ flags */ 271 int flags; /* CF_ flags */
266 HV *hv; /* the perl hash associated with this coro, if any */ 272 HV *hv; /* the perl hash associated with this coro, if any */
273 void (*on_destroy)(pTHX_ struct coro *coro);
267 274
268 /* statistics */ 275 /* statistics */
269 int usecount; /* number of transfers to this coro */ 276 int usecount; /* number of transfers to this coro */
270 277
271 /* coro process data */ 278 /* coro process data */
272 int prio; 279 int prio;
273 SV *throw; /* exception to be thrown */ 280 SV *except; /* exception to be thrown */
281 SV *rouse_cb;
274 282
275 /* async_pool */ 283 /* async_pool */
276 SV *saved_deffh; 284 SV *saved_deffh;
285 SV *invoke_cb;
286 AV *invoke_av;
277 287
278 /* linked list */ 288 /* linked list */
279 struct coro *next, *prev; 289 struct coro *next, *prev;
280}; 290};
281 291
282typedef struct coro *Coro__State; 292typedef struct coro *Coro__State;
283typedef struct coro *Coro__State_or_hashref; 293typedef struct coro *Coro__State_or_hashref;
294
295/* the following variables are effectively part of the perl context */
296/* and get copied between struct coro and these variables */
297/* the mainr easonw e don't support windows process emulation */
298static struct CoroSLF slf_frame; /* the current slf frame */
284 299
285/** Coro ********************************************************************/ 300/** Coro ********************************************************************/
286 301
287#define PRIO_MAX 3 302#define PRIO_MAX 3
288#define PRIO_HIGH 1 303#define PRIO_HIGH 1
… …
293 308
294/* for Coro.pm */ 309/* for Coro.pm */
295static SV *coro_current; 310static SV *coro_current;
296static SV *coro_readyhook; 311static SV *coro_readyhook;
297static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 312static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
298static int coro_nready; 313static CV *cv_coro_run, *cv_coro_terminate;
299static struct coro *coro_first; 314static struct coro *coro_first;
315#define coro_nready coroapi.nready
300 316
301/** lowlevel stuff **********************************************************/ 317/** lowlevel stuff **********************************************************/
302 318
303static SV * 319static SV *
304coro_get_sv (pTHX_ const char *name, int create) 320coro_get_sv (pTHX_ const char *name, int create)
… …
328 get_hv (name, create); 344 get_hv (name, create);
329#endif 345#endif
330 return get_hv (name, create); 346 return get_hv (name, create);
331} 347}
332 348
349/* may croak */
350INLINE CV *
351coro_sv_2cv (pTHX_ SV *sv)
352{
353 HV *st;
354 GV *gvp;
355 return sv_2cv (sv, &st, &gvp, 0);
356}
357
333static AV * 358static AV *
334coro_clone_padlist (pTHX_ CV *cv) 359coro_derive_padlist (pTHX_ CV *cv)
335{ 360{
336 AV *padlist = CvPADLIST (cv); 361 AV *padlist = CvPADLIST (cv);
337 AV *newpadlist, *newpad; 362 AV *newpadlist, *newpad;
338 363
339 newpadlist = newAV (); 364 newpadlist = newAV ();
… …
389 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 414 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
390 415
391 return 0; 416 return 0;
392} 417}
393 418
394#define CORO_MAGIC_type_cv PERL_MAGIC_ext 419#define CORO_MAGIC_type_cv 26
395#define CORO_MAGIC_type_state PERL_MAGIC_ext 420#define CORO_MAGIC_type_state PERL_MAGIC_ext
396 421
397static MGVTBL coro_cv_vtbl = { 422static MGVTBL coro_cv_vtbl = {
398 0, 0, 0, 0, 423 0, 0, 0, 0,
399 coro_cv_free 424 coro_cv_free
400}; 425};
401 426
427#define CORO_MAGIC_NN(sv, type) \
428 (expect_true (SvMAGIC (sv)->mg_type == type) \
429 ? SvMAGIC (sv) \
430 : mg_find (sv, type))
431
402#define CORO_MAGIC(sv, type) \ 432#define CORO_MAGIC(sv, type) \
403 SvMAGIC (sv) \ 433 (expect_true (SvMAGIC (sv)) \
404 ? SvMAGIC (sv)->mg_type == type \ 434 ? CORO_MAGIC_NN (sv, type) \
405 ? SvMAGIC (sv) \
406 : mg_find (sv, type) \
407 : 0 435 : 0)
408 436
409#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 437#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
410#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 438#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
411 439
412static struct coro * 440INLINE struct coro *
413SvSTATE_ (pTHX_ SV *coro) 441SvSTATE_ (pTHX_ SV *coro)
414{ 442{
415 HV *stash; 443 HV *stash;
416 MAGIC *mg; 444 MAGIC *mg;
417 445
… …
432 mg = CORO_MAGIC_state (coro); 460 mg = CORO_MAGIC_state (coro);
433 return (struct coro *)mg->mg_ptr; 461 return (struct coro *)mg->mg_ptr;
434} 462}
435 463
436#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 464#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
465
466/* faster than SvSTATE, but expects a coroutine hv */
467#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
468#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
437 469
438/* the next two functions merely cache the padlists */ 470/* the next two functions merely cache the padlists */
439static void 471static void
440get_padlist (pTHX_ CV *cv) 472get_padlist (pTHX_ CV *cv)
441{ 473{
… …
447 else 479 else
448 { 480 {
449#if CORO_PREFER_PERL_FUNCTIONS 481#if CORO_PREFER_PERL_FUNCTIONS
450 /* this is probably cleaner? but also slower! */ 482 /* this is probably cleaner? but also slower! */
451 /* in practise, it seems to be less stable */ 483 /* in practise, it seems to be less stable */
452 CV *cp = Perl_cv_clone (cv); 484 CV *cp = Perl_cv_clone (aTHX_ cv);
453 CvPADLIST (cv) = CvPADLIST (cp); 485 CvPADLIST (cv) = CvPADLIST (cp);
454 CvPADLIST (cp) = 0; 486 CvPADLIST (cp) = 0;
455 SvREFCNT_dec (cp); 487 SvREFCNT_dec (cp);
456#else 488#else
457 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 489 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
458#endif 490#endif
459 } 491 }
460} 492}
461 493
462static void 494static void
… …
508 CvPADLIST (cv) = (AV *)POPs; 540 CvPADLIST (cv) = (AV *)POPs;
509 } 541 }
510 542
511 PUTBACK; 543 PUTBACK;
512 } 544 }
545
546 slf_frame = c->slf_frame;
547 CORO_THROW = c->except;
513} 548}
514 549
515static void 550static void
516save_perl (pTHX_ Coro__State c) 551save_perl (pTHX_ Coro__State c)
517{ 552{
553 c->except = CORO_THROW;
554 c->slf_frame = slf_frame;
555
518 { 556 {
519 dSP; 557 dSP;
520 I32 cxix = cxstack_ix; 558 I32 cxix = cxstack_ix;
521 PERL_CONTEXT *ccstk = cxstack; 559 PERL_CONTEXT *ccstk = cxstack;
522 PERL_SI *top_si = PL_curstackinfo; 560 PERL_SI *top_si = PL_curstackinfo;
… …
589 #undef VAR 627 #undef VAR
590 } 628 }
591} 629}
592 630
593/* 631/*
594 * allocate various perl stacks. This is an exact copy 632 * allocate various perl stacks. This is almost an exact copy
595 * of perl.c:init_stacks, except that it uses less memory 633 * of perl.c:init_stacks, except that it uses less memory
596 * on the (sometimes correct) assumption that coroutines do 634 * on the (sometimes correct) assumption that coroutines do
597 * not usually need a lot of stackspace. 635 * not usually need a lot of stackspace.
598 */ 636 */
599#if CORO_PREFER_PERL_FUNCTIONS 637#if CORO_PREFER_PERL_FUNCTIONS
600# define coro_init_stacks init_stacks 638# define coro_init_stacks(thx) init_stacks ()
601#else 639#else
602static void 640static void
603coro_init_stacks (pTHX) 641coro_init_stacks (pTHX)
604{ 642{
605 PL_curstackinfo = new_stackinfo(32, 8); 643 PL_curstackinfo = new_stackinfo(32, 8);
… …
668#if !PERL_VERSION_ATLEAST (5,10,0) 706#if !PERL_VERSION_ATLEAST (5,10,0)
669 Safefree (PL_retstack); 707 Safefree (PL_retstack);
670#endif 708#endif
671} 709}
672 710
711#define CORO_RSS \
712 rss += sizeof (SYM (curstackinfo)); \
713 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
714 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
715 rss += SYM (tmps_max) * sizeof (SV *); \
716 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
717 rss += SYM (scopestack_max) * sizeof (I32); \
718 rss += SYM (savestack_max) * sizeof (ANY);
719
673static size_t 720static size_t
674coro_rss (pTHX_ struct coro *coro) 721coro_rss (pTHX_ struct coro *coro)
675{ 722{
676 size_t rss = sizeof (*coro); 723 size_t rss = sizeof (*coro);
677 724
678 if (coro->mainstack) 725 if (coro->mainstack)
679 { 726 {
680 perl_slots tmp_slot;
681 perl_slots *slot;
682
683 if (coro->flags & CF_RUNNING) 727 if (coro->flags & CF_RUNNING)
684 { 728 {
685 slot = &tmp_slot; 729 #define SYM(sym) PL_ ## sym
686 730 CORO_RSS;
687 #define VAR(name,type) slot->name = PL_ ## name;
688 # include "state.h"
689 #undef VAR 731 #undef SYM
690 } 732 }
691 else 733 else
692 slot = coro->slot;
693
694 if (slot)
695 { 734 {
696 rss += sizeof (slot->curstackinfo); 735 #define SYM(sym) coro->slot->sym
697 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 736 CORO_RSS;
698 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 737 #undef SYM
699 rss += slot->tmps_max * sizeof (SV *);
700 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
701 rss += slot->scopestack_max * sizeof (I32);
702 rss += slot->savestack_max * sizeof (ANY);
703
704#if !PERL_VERSION_ATLEAST (5,10,0)
705 rss += slot->retstack_max * sizeof (OP *);
706#endif
707 } 738 }
708 } 739 }
709 740
710 return rss; 741 return rss;
711} 742}
… …
801 832
802 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 833 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
803} 834}
804 835
805static void 836static void
837prepare_nop (pTHX_ struct coro_transfer_args *ta)
838{
839 /* kind of mega-hacky, but works */
840 ta->next = ta->prev = (struct coro *)ta;
841}
842
843static int
844slf_check_nop (pTHX_ struct CoroSLF *frame)
845{
846 return 0;
847}
848
849static int
850slf_check_repeat (pTHX_ struct CoroSLF *frame)
851{
852 return 1;
853}
854
855static UNOP coro_setup_op;
856
857static void NOINLINE /* noinline to keep it out of the transfer fast path */
806coro_setup (pTHX_ struct coro *coro) 858coro_setup (pTHX_ struct coro *coro)
807{ 859{
808 /* 860 /*
809 * emulate part of the perl startup here. 861 * emulate part of the perl startup here.
810 */ 862 */
… …
834 PL_rs = newSVsv (GvSV (irsgv)); 886 PL_rs = newSVsv (GvSV (irsgv));
835 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 887 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
836 888
837 { 889 {
838 dSP; 890 dSP;
839 LOGOP myop; 891 UNOP myop;
840 892
841 Zero (&myop, 1, LOGOP); 893 Zero (&myop, 1, UNOP);
842 myop.op_next = Nullop; 894 myop.op_next = Nullop;
895 myop.op_type = OP_ENTERSUB;
843 myop.op_flags = OPf_WANT_VOID; 896 myop.op_flags = OPf_WANT_VOID;
844 897
845 PUSHMARK (SP); 898 PUSHMARK (SP);
846 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 899 PUSHs ((SV *)coro->startcv);
847 PUTBACK; 900 PUTBACK;
848 PL_op = (OP *)&myop; 901 PL_op = (OP *)&myop;
849 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 902 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
850 SPAGAIN;
851 } 903 }
852 904
853 /* this newly created coroutine might be run on an existing cctx which most 905 /* this newly created coroutine might be run on an existing cctx which most
854 * likely was suspended in set_stacklevel, called from entersub. 906 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
855 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
856 * so we ENTER here for symmetry
857 */ 907 */
858 ENTER; 908 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
909 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
910
911 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
912 coro_setup_op.op_next = PL_op;
913 coro_setup_op.op_type = OP_ENTERSUB;
914 coro_setup_op.op_ppaddr = pp_slf;
915 /* no flags etc. required, as an init function won't be called */
916
917 PL_op = (OP *)&coro_setup_op;
918
919 /* copy throw, in case it was set before coro_setup */
920 CORO_THROW = coro->except;
859} 921}
860 922
861static void 923static void
862coro_destruct (pTHX_ struct coro *coro) 924coro_destruct (pTHX_ struct coro *coro)
863{ 925{
… …
887 949
888 SvREFCNT_dec (PL_diehook); 950 SvREFCNT_dec (PL_diehook);
889 SvREFCNT_dec (PL_warnhook); 951 SvREFCNT_dec (PL_warnhook);
890 952
891 SvREFCNT_dec (coro->saved_deffh); 953 SvREFCNT_dec (coro->saved_deffh);
892 SvREFCNT_dec (coro->throw); 954 SvREFCNT_dec (coro->rouse_cb);
955 SvREFCNT_dec (coro->invoke_cb);
956 SvREFCNT_dec (coro->invoke_av);
893 957
894 coro_destruct_stacks (aTHX); 958 coro_destruct_stacks (aTHX);
895} 959}
896 960
897static void 961INLINE void
898free_coro_mortal (pTHX) 962free_coro_mortal (pTHX)
899{ 963{
900 if (expect_true (coro_mortal)) 964 if (expect_true (coro_mortal))
901 { 965 {
902 SvREFCNT_dec (coro_mortal); 966 SvREFCNT_dec (coro_mortal);
… …
907static int 971static int
908runops_trace (pTHX) 972runops_trace (pTHX)
909{ 973{
910 COP *oldcop = 0; 974 COP *oldcop = 0;
911 int oldcxix = -2; 975 int oldcxix = -2;
912 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
913 coro_cctx *cctx = coro->cctx;
914 976
915 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 977 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
916 { 978 {
917 PERL_ASYNC_CHECK (); 979 PERL_ASYNC_CHECK ();
918 980
919 if (cctx->flags & CC_TRACE_ALL) 981 if (cctx_current->flags & CC_TRACE_ALL)
920 { 982 {
921 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 983 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
922 { 984 {
923 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 985 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
924 SV **bot, **top; 986 SV **bot, **top;
925 AV *av = newAV (); /* return values */ 987 AV *av = newAV (); /* return values */
926 SV **cb; 988 SV **cb;
… …
963 1025
964 if (PL_curcop != &PL_compiling) 1026 if (PL_curcop != &PL_compiling)
965 { 1027 {
966 SV **cb; 1028 SV **cb;
967 1029
968 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1030 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
969 { 1031 {
970 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1032 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
971 1033
972 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1034 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
973 { 1035 {
974 runops_proc_t old_runops = PL_runops;
975 dSP; 1036 dSP;
976 GV *gv = CvGV (cx->blk_sub.cv); 1037 GV *gv = CvGV (cx->blk_sub.cv);
977 SV *fullname = sv_2mortal (newSV (0)); 1038 SV *fullname = sv_2mortal (newSV (0));
978 1039
979 if (isGV (gv)) 1040 if (isGV (gv))
… …
984 SAVETMPS; 1045 SAVETMPS;
985 EXTEND (SP, 3); 1046 EXTEND (SP, 3);
986 PUSHMARK (SP); 1047 PUSHMARK (SP);
987 PUSHs (&PL_sv_yes); 1048 PUSHs (&PL_sv_yes);
988 PUSHs (fullname); 1049 PUSHs (fullname);
989 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);
990 PUTBACK; 1051 PUTBACK;
991 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);
992 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);
993 SPAGAIN; 1054 SPAGAIN;
994 FREETMPS; 1055 FREETMPS;
… …
997 } 1058 }
998 1059
999 oldcxix = cxstack_ix; 1060 oldcxix = cxstack_ix;
1000 } 1061 }
1001 1062
1002 if (cctx->flags & CC_TRACE_LINE) 1063 if (cctx_current->flags & CC_TRACE_LINE)
1003 { 1064 {
1004 dSP; 1065 dSP;
1005 1066
1006 PL_runops = RUNOPS_DEFAULT; 1067 PL_runops = RUNOPS_DEFAULT;
1007 ENTER; 1068 ENTER;
… …
1026 1087
1027 TAINT_NOT; 1088 TAINT_NOT;
1028 return 0; 1089 return 0;
1029} 1090}
1030 1091
1031/* inject a fake call to Coro::State::_cctx_init into the execution */ 1092static struct CoroSLF cctx_ssl_frame;
1032/* _cctx_init should be careful, as it could be called at almost any time */ 1093
1033/* during execution of a perl program */ 1094static void
1095slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1096{
1097 ta->prev = 0;
1098}
1099
1100static int
1101slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1102{
1103 *frame = cctx_ssl_frame;
1104
1105 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1106}
1107
1108/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1034static void NOINLINE 1109static void NOINLINE
1035cctx_prepare (pTHX_ coro_cctx *cctx) 1110cctx_prepare (pTHX)
1036{ 1111{
1037 dSP;
1038 LOGOP myop;
1039
1040 PL_top_env = &PL_start_env; 1112 PL_top_env = &PL_start_env;
1041 1113
1042 if (cctx->flags & CC_TRACE) 1114 if (cctx_current->flags & CC_TRACE)
1043 PL_runops = runops_trace; 1115 PL_runops = runops_trace;
1044 1116
1045 Zero (&myop, 1, LOGOP); 1117 /* we already must be executing an SLF op, there is no other valid way
1046 myop.op_next = PL_op; 1118 * that can lead to creation of a new cctx */
1047 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1119 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1120 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1048 1121
1049 PUSHMARK (SP); 1122 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1050 EXTEND (SP, 2); 1123 cctx_ssl_frame = slf_frame;
1051 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1124
1052 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1125 slf_frame.prepare = slf_prepare_set_stacklevel;
1053 PUTBACK; 1126 slf_frame.check = slf_check_set_stacklevel;
1054 PL_op = (OP *)&myop; 1127}
1055 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1128
1056 SPAGAIN; 1129/* the tail of transfer: execute stuff we can only do after a transfer */
1130INLINE void
1131transfer_tail (pTHX)
1132{
1133 free_coro_mortal (aTHX);
1057} 1134}
1058 1135
1059/* 1136/*
1060 * this is a _very_ stripped down perl interpreter ;) 1137 * this is a _very_ stripped down perl interpreter ;)
1061 */ 1138 */
… …
1068# endif 1145# endif
1069#endif 1146#endif
1070 { 1147 {
1071 dTHX; 1148 dTHX;
1072 1149
1073 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1150 /* normally we would need to skip the entersub here */
1074 UNLOCK; 1151 /* not doing so will re-execute it, which is exactly what we want */
1075
1076 /* we now skip the entersub that lead to transfer() */
1077 PL_op = PL_op->op_next; 1152 /* PL_nop = PL_nop->op_next */
1078 1153
1079 /* inject a fake subroutine call to cctx_init */ 1154 /* inject a fake subroutine call to cctx_init */
1080 cctx_prepare (aTHX_ (coro_cctx *)arg); 1155 cctx_prepare (aTHX);
1156
1157 /* cctx_run is the alternative tail of transfer() */
1158 transfer_tail (aTHX);
1081 1159
1082 /* somebody or something will hit me for both perl_run and PL_restartop */ 1160 /* somebody or something will hit me for both perl_run and PL_restartop */
1083 PL_restartop = PL_op; 1161 PL_restartop = PL_op;
1084 perl_run (PL_curinterp); 1162 perl_run (PL_curinterp);
1163 /*
1164 * Unfortunately, there is no way to get at the return values of the
1165 * coro body here, as perl_run destroys these
1166 */
1085 1167
1086 /* 1168 /*
1087 * If perl-run returns we assume exit() was being called or the coro 1169 * If perl-run returns we assume exit() was being called or the coro
1088 * fell off the end, which seems to be the only valid (non-bug) 1170 * fell off the end, which seems to be the only valid (non-bug)
1089 * reason for perl_run to return. We try to exit by jumping to the 1171 * reason for perl_run to return. We try to exit by jumping to the
… …
1101 coro_cctx *cctx; 1183 coro_cctx *cctx;
1102 1184
1103 ++cctx_count; 1185 ++cctx_count;
1104 New (0, cctx, 1, coro_cctx); 1186 New (0, cctx, 1, coro_cctx);
1105 1187
1106 cctx->gen = cctx_gen; 1188 cctx->gen = cctx_gen;
1107 cctx->flags = 0; 1189 cctx->flags = 0;
1190 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1108 1191
1109 return cctx; 1192 return cctx;
1110} 1193}
1111 1194
1112/* create a new cctx only suitable as source */ 1195/* create a new cctx only suitable as source */
1113static coro_cctx * 1196static coro_cctx *
1114cctx_new_empty () 1197cctx_new_empty ()
1115{ 1198{
1116 coro_cctx *cctx = cctx_new (); 1199 coro_cctx *cctx = cctx_new ();
1117 1200
1118 cctx->sptr = 0; 1201 cctx->sptr = 0;
1119 cctx->idle_sp = 0; /* should never be a valid address */
1120 coro_create (&cctx->cctx, 0, 0, 0, 0); 1202 coro_create (&cctx->cctx, 0, 0, 0, 0);
1121 1203
1122 return cctx; 1204 return cctx;
1123} 1205}
1124 1206
… …
1135 /* mmap supposedly does allocate-on-write for us */ 1217 /* mmap supposedly does allocate-on-write for us */
1136 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1218 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1137 1219
1138 if (cctx->sptr != (void *)-1) 1220 if (cctx->sptr != (void *)-1)
1139 { 1221 {
1140# if CORO_STACKGUARD 1222 #if CORO_STACKGUARD
1141 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1223 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1142# endif 1224 #endif
1143 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1225 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1144 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1226 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1145 cctx->flags |= CC_MAPPED; 1227 cctx->flags |= CC_MAPPED;
1146 } 1228 }
1147 else 1229 else
1148#endif 1230#endif
1149 { 1231 {
1150 cctx->ssize = cctx_stacksize * (long)sizeof (long); 1232 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1151 New (0, cctx->sptr, cctx_stacksize, long); 1233 New (0, cctx->sptr, cctx_stacksize, long);
1152 1234
1153 if (!cctx->sptr) 1235 if (!cctx->sptr)
1154 { 1236 {
1155 perror ("FATAL: unable to allocate stack for coroutine"); 1237 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1156 _exit (EXIT_FAILURE); 1238 _exit (EXIT_FAILURE);
1157 } 1239 }
1158 1240
1159 stack_start = cctx->sptr; 1241 stack_start = cctx->sptr;
1160 stack_size = cctx->ssize; 1242 stack_size = cctx->ssize;
1161 } 1243 }
1162 1244
1163 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1245 #if CORO_USE_VALGRIND
1246 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1247 #endif
1248
1164 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1249 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1165 1250
1166 return cctx; 1251 return cctx;
1167} 1252}
1168 1253
… …
1170cctx_destroy (coro_cctx *cctx) 1255cctx_destroy (coro_cctx *cctx)
1171{ 1256{
1172 if (!cctx) 1257 if (!cctx)
1173 return; 1258 return;
1174 1259
1260 assert (cctx != cctx_current);//D temporary
1261
1175 --cctx_count; 1262 --cctx_count;
1176 coro_destroy (&cctx->cctx); 1263 coro_destroy (&cctx->cctx);
1177 1264
1178 /* coro_transfer creates new, empty cctx's */ 1265 /* coro_transfer creates new, empty cctx's */
1179 if (cctx->sptr) 1266 if (cctx->sptr)
1180 { 1267 {
1181#if CORO_USE_VALGRIND 1268 #if CORO_USE_VALGRIND
1182 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1269 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1183#endif 1270 #endif
1184 1271
1185#if HAVE_MMAP 1272#if HAVE_MMAP
1186 if (cctx->flags & CC_MAPPED) 1273 if (cctx->flags & CC_MAPPED)
1187 munmap (cctx->sptr, cctx->ssize); 1274 munmap (cctx->sptr, cctx->ssize);
1188 else 1275 else
… …
1215} 1302}
1216 1303
1217static void 1304static void
1218cctx_put (coro_cctx *cctx) 1305cctx_put (coro_cctx *cctx)
1219{ 1306{
1220 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1307 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1221 1308
1222 /* free another cctx if overlimit */ 1309 /* free another cctx if overlimit */
1223 if (expect_false (cctx_idle >= cctx_max_idle)) 1310 if (expect_false (cctx_idle >= cctx_max_idle))
1224 { 1311 {
1225 coro_cctx *first = cctx_first; 1312 coro_cctx *first = cctx_first;
… …
1237/** coroutine switching *****************************************************/ 1324/** coroutine switching *****************************************************/
1238 1325
1239static void 1326static void
1240transfer_check (pTHX_ struct coro *prev, struct coro *next) 1327transfer_check (pTHX_ struct coro *prev, struct coro *next)
1241{ 1328{
1329 /* TODO: throwing up here is considered harmful */
1330
1242 if (expect_true (prev != next)) 1331 if (expect_true (prev != next))
1243 { 1332 {
1244 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1333 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1245 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1334 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1246 1335
1247 if (expect_false (next->flags & CF_RUNNING)) 1336 if (expect_false (next->flags & CF_RUNNING))
1248 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1337 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1249 1338
1250 if (expect_false (next->flags & CF_DESTROYED)) 1339 if (expect_false (next->flags & CF_DESTROYED))
1251 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1340 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1252 1341
1253#if !PERL_VERSION_ATLEAST (5,10,0) 1342#if !PERL_VERSION_ATLEAST (5,10,0)
1254 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1343 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1255 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1344 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1256#endif 1345#endif
1257 } 1346 }
1258} 1347}
1259 1348
1260/* always use the TRANSFER macro */ 1349/* always use the TRANSFER macro */
1261static void NOINLINE 1350static void NOINLINE /* noinline so we have a fixed stackframe */
1262transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1351transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1263{ 1352{
1264 dSTACKLEVEL; 1353 dSTACKLEVEL;
1265 1354
1266 /* sometimes transfer is only called to set idle_sp */ 1355 /* sometimes transfer is only called to set idle_sp */
1267 if (expect_false (!next)) 1356 if (expect_false (!prev))
1268 { 1357 {
1269 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1358 cctx_current->idle_sp = STACKLEVEL;
1270 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1359 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1271 } 1360 }
1272 else if (expect_true (prev != next)) 1361 else if (expect_true (prev != next))
1273 { 1362 {
1274 static volatile int has_throw;
1275 coro_cctx *prev__cctx; 1363 coro_cctx *cctx_prev;
1276 1364
1277 if (expect_false (prev->flags & CF_NEW)) 1365 if (expect_false (prev->flags & CF_NEW))
1278 { 1366 {
1279 /* create a new empty/source context */ 1367 /* create a new empty/source context */
1280 prev->cctx = cctx_new_empty ();
1281 prev->flags &= ~CF_NEW; 1368 prev->flags &= ~CF_NEW;
1282 prev->flags |= CF_RUNNING; 1369 prev->flags |= CF_RUNNING;
1283 } 1370 }
1284 1371
1285 prev->flags &= ~CF_RUNNING; 1372 prev->flags &= ~CF_RUNNING;
1286 next->flags |= CF_RUNNING; 1373 next->flags |= CF_RUNNING;
1287
1288 LOCK;
1289 1374
1290 /* first get rid of the old state */ 1375 /* first get rid of the old state */
1291 save_perl (aTHX_ prev); 1376 save_perl (aTHX_ prev);
1292 1377
1293 if (expect_false (next->flags & CF_NEW)) 1378 if (expect_false (next->flags & CF_NEW))
… …
1298 coro_setup (aTHX_ next); 1383 coro_setup (aTHX_ next);
1299 } 1384 }
1300 else 1385 else
1301 load_perl (aTHX_ next); 1386 load_perl (aTHX_ next);
1302 1387
1303 prev__cctx = prev->cctx;
1304
1305 /* possibly "free" the cctx */ 1388 /* possibly untie and reuse the cctx */
1306 if (expect_true ( 1389 if (expect_true (
1307 prev__cctx->idle_sp == STACKLEVEL 1390 cctx_current->idle_sp == STACKLEVEL
1308 && !(prev__cctx->flags & CC_TRACE) 1391 && !(cctx_current->flags & CC_TRACE)
1309 && !force_cctx 1392 && !force_cctx
1310 )) 1393 ))
1311 { 1394 {
1312 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1395 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1313 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1396 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1314
1315 prev->cctx = 0;
1316 1397
1317 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1398 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1318 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1399 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1319 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1400 if (expect_false (CCTX_EXPIRED (cctx_current)))
1320 if (!next->cctx) 1401 if (!next->cctx)
1321 next->cctx = cctx_get (aTHX); 1402 next->cctx = cctx_get (aTHX);
1322 1403
1323 cctx_put (prev__cctx); 1404 cctx_put (cctx_current);
1405 assert (!prev->cctx);//D temporary
1324 } 1406 }
1407 else
1408 prev->cctx = cctx_current;
1325 1409
1326 ++next->usecount; 1410 ++next->usecount;
1327 1411
1328 if (expect_true (!next->cctx)) 1412 cctx_prev = cctx_current;
1329 next->cctx = cctx_get (aTHX); 1413 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1330 1414
1331 has_throw = !!next->throw; 1415 next->cctx = 0;
1332 1416
1333 if (expect_false (prev__cctx != next->cctx)) 1417 if (expect_false (cctx_prev != cctx_current))
1334 { 1418 {
1335 prev__cctx->top_env = PL_top_env; 1419 cctx_prev->top_env = PL_top_env;
1336 PL_top_env = next->cctx->top_env; 1420 PL_top_env = cctx_current->top_env;
1337 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1421 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1338 } 1422 }
1339 1423
1340 free_coro_mortal (aTHX); 1424 transfer_tail (aTHX);
1341 UNLOCK;
1342
1343 if (expect_false (has_throw))
1344 {
1345 struct coro *coro = SvSTATE (coro_current);
1346
1347 if (coro->throw)
1348 {
1349 SV *exception = coro->throw;
1350 coro->throw = 0;
1351 sv_setsv (ERRSV, exception);
1352 croak (0);
1353 }
1354 }
1355 } 1425 }
1356} 1426}
1357
1358struct transfer_args
1359{
1360 struct coro *prev, *next;
1361};
1362 1427
1363#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1428#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1364#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1429#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1365 1430
1366/** high level stuff ********************************************************/ 1431/** high level stuff ********************************************************/
… …
1368static int 1433static int
1369coro_state_destroy (pTHX_ struct coro *coro) 1434coro_state_destroy (pTHX_ struct coro *coro)
1370{ 1435{
1371 if (coro->flags & CF_DESTROYED) 1436 if (coro->flags & CF_DESTROYED)
1372 return 0; 1437 return 0;
1438
1439 if (coro->on_destroy)
1440 coro->on_destroy (aTHX_ coro);
1373 1441
1374 coro->flags |= CF_DESTROYED; 1442 coro->flags |= CF_DESTROYED;
1375 1443
1376 if (coro->flags & CF_READY) 1444 if (coro->flags & CF_READY)
1377 { 1445 {
1378 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1446 /* reduce nready, as destroying a ready coro effectively unreadies it */
1379 /* alternative: look through all ready queues and remove the coro */ 1447 /* alternative: look through all ready queues and remove the coro */
1380 LOCK;
1381 --coro_nready; 1448 --coro_nready;
1382 UNLOCK;
1383 } 1449 }
1384 else 1450 else
1385 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1451 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1386 1452
1387 if (coro->mainstack && coro->mainstack != main_mainstack) 1453 if (coro->mainstack && coro->mainstack != main_mainstack)
1388 { 1454 {
1389 struct coro temp; 1455 struct coro temp;
1390 1456
1391 if (coro->flags & CF_RUNNING) 1457 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1392 croak ("FATAL: tried to destroy currently running coroutine");
1393 1458
1394 save_perl (aTHX_ &temp); 1459 save_perl (aTHX_ &temp);
1395 load_perl (aTHX_ coro); 1460 load_perl (aTHX_ coro);
1396 1461
1397 coro_destruct (aTHX_ coro); 1462 coro_destruct (aTHX_ coro);
… …
1400 1465
1401 coro->slot = 0; 1466 coro->slot = 0;
1402 } 1467 }
1403 1468
1404 cctx_destroy (coro->cctx); 1469 cctx_destroy (coro->cctx);
1470 SvREFCNT_dec (coro->startcv);
1405 SvREFCNT_dec (coro->args); 1471 SvREFCNT_dec (coro->args);
1472 SvREFCNT_dec (CORO_THROW);
1406 1473
1407 if (coro->next) coro->next->prev = coro->prev; 1474 if (coro->next) coro->next->prev = coro->prev;
1408 if (coro->prev) coro->prev->next = coro->next; 1475 if (coro->prev) coro->prev->next = coro->next;
1409 if (coro == coro_first) coro_first = coro->next; 1476 if (coro == coro_first) coro_first = coro->next;
1410 1477
… …
1448# define MGf_DUP 0 1515# define MGf_DUP 0
1449#endif 1516#endif
1450}; 1517};
1451 1518
1452static void 1519static void
1453prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1520prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1454{ 1521{
1455 ta->prev = SvSTATE (prev_sv); 1522 ta->prev = SvSTATE (prev_sv);
1456 ta->next = SvSTATE (next_sv); 1523 ta->next = SvSTATE (next_sv);
1457 TRANSFER_CHECK (*ta); 1524 TRANSFER_CHECK (*ta);
1458} 1525}
1459 1526
1460static void 1527static void
1461api_transfer (SV *prev_sv, SV *next_sv) 1528api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1462{ 1529{
1463 dTHX;
1464 struct transfer_args ta; 1530 struct coro_transfer_args ta;
1465 1531
1466 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1532 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1467 TRANSFER (ta, 1); 1533 TRANSFER (ta, 1);
1468} 1534}
1469 1535
1536/*****************************************************************************/
1537/* gensub: simple closure generation utility */
1538
1539#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1540
1541/* create a closure from XS, returns a code reference */
1542/* the arg can be accessed via GENSUB_ARG from the callback */
1543/* the callback must use dXSARGS/XSRETURN */
1544static SV *
1545gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1546{
1547 CV *cv = (CV *)newSV (0);
1548
1549 sv_upgrade ((SV *)cv, SVt_PVCV);
1550
1551 CvANON_on (cv);
1552 CvISXSUB_on (cv);
1553 CvXSUB (cv) = xsub;
1554 GENSUB_ARG = arg;
1555
1556 return newRV_noinc ((SV *)cv);
1557}
1558
1470/** Coro ********************************************************************/ 1559/** Coro ********************************************************************/
1471 1560
1472static void 1561INLINE void
1473coro_enq (pTHX_ SV *coro_sv) 1562coro_enq (pTHX_ struct coro *coro)
1474{ 1563{
1475 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1564 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1476} 1565}
1477 1566
1478static SV * 1567INLINE SV *
1479coro_deq (pTHX) 1568coro_deq (pTHX)
1480{ 1569{
1481 int prio; 1570 int prio;
1482 1571
1483 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1572 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1486 1575
1487 return 0; 1576 return 0;
1488} 1577}
1489 1578
1490static int 1579static int
1491api_ready (SV *coro_sv) 1580api_ready (pTHX_ SV *coro_sv)
1492{ 1581{
1493 dTHX;
1494 struct coro *coro; 1582 struct coro *coro;
1495 SV *sv_hook; 1583 SV *sv_hook;
1496 void (*xs_hook)(void); 1584 void (*xs_hook)(void);
1497 1585
1498 if (SvROK (coro_sv)) 1586 if (SvROK (coro_sv))
… …
1503 if (coro->flags & CF_READY) 1591 if (coro->flags & CF_READY)
1504 return 0; 1592 return 0;
1505 1593
1506 coro->flags |= CF_READY; 1594 coro->flags |= CF_READY;
1507 1595
1508 LOCK;
1509
1510 sv_hook = coro_nready ? 0 : coro_readyhook; 1596 sv_hook = coro_nready ? 0 : coro_readyhook;
1511 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1597 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1512 1598
1513 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1599 coro_enq (aTHX_ coro);
1514 ++coro_nready; 1600 ++coro_nready;
1515 1601
1516 UNLOCK;
1517
1518 if (sv_hook) 1602 if (sv_hook)
1519 { 1603 {
1520 dSP; 1604 dSP;
1521 1605
1522 ENTER; 1606 ENTER;
1523 SAVETMPS; 1607 SAVETMPS;
1524 1608
1525 PUSHMARK (SP); 1609 PUSHMARK (SP);
1526 PUTBACK; 1610 PUTBACK;
1527 call_sv (sv_hook, G_DISCARD); 1611 call_sv (sv_hook, G_VOID | G_DISCARD);
1528 SPAGAIN;
1529 1612
1530 FREETMPS; 1613 FREETMPS;
1531 LEAVE; 1614 LEAVE;
1532 } 1615 }
1533 1616
… …
1536 1619
1537 return 1; 1620 return 1;
1538} 1621}
1539 1622
1540static int 1623static int
1541api_is_ready (SV *coro_sv) 1624api_is_ready (pTHX_ SV *coro_sv)
1542{ 1625{
1543 dTHX;
1544 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1626 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1545} 1627}
1546 1628
1629/* expects to own a reference to next->hv */
1630INLINE void
1631prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1632{
1633 SV *prev_sv = SvRV (coro_current);
1634
1635 ta->prev = SvSTATE_hv (prev_sv);
1636 ta->next = next;
1637
1638 TRANSFER_CHECK (*ta);
1639
1640 SvRV_set (coro_current, (SV *)next->hv);
1641
1642 free_coro_mortal (aTHX);
1643 coro_mortal = prev_sv;
1644}
1645
1547static void 1646static void
1548prepare_schedule (pTHX_ struct transfer_args *ta) 1647prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1549{ 1648{
1550 SV *prev_sv, *next_sv;
1551
1552 for (;;) 1649 for (;;)
1553 { 1650 {
1554 LOCK;
1555 next_sv = coro_deq (aTHX); 1651 SV *next_sv = coro_deq (aTHX);
1556 1652
1557 /* nothing to schedule: call the idle handler */
1558 if (expect_false (!next_sv)) 1653 if (expect_true (next_sv))
1559 { 1654 {
1655 struct coro *next = SvSTATE_hv (next_sv);
1656
1657 /* cannot transfer to destroyed coros, skip and look for next */
1658 if (expect_false (next->flags & CF_DESTROYED))
1659 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1660 else
1661 {
1662 next->flags &= ~CF_READY;
1663 --coro_nready;
1664
1665 prepare_schedule_to (aTHX_ ta, next);
1666 break;
1667 }
1668 }
1669 else
1670 {
1671 /* nothing to schedule: call the idle handler */
1560 dSP; 1672 dSP;
1561 UNLOCK;
1562 1673
1563 ENTER; 1674 ENTER;
1564 SAVETMPS; 1675 SAVETMPS;
1565 1676
1566 PUSHMARK (SP); 1677 PUSHMARK (SP);
1567 PUTBACK; 1678 PUTBACK;
1568 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1679 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1569 SPAGAIN;
1570 1680
1571 FREETMPS; 1681 FREETMPS;
1572 LEAVE; 1682 LEAVE;
1573 continue;
1574 } 1683 }
1575
1576 ta->next = SvSTATE (next_sv);
1577
1578 /* cannot transfer to destroyed coros, skip and look for next */
1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1580 {
1581 UNLOCK;
1582 SvREFCNT_dec (next_sv);
1583 /* coro_nready is already taken care of by destroy */
1584 continue;
1585 }
1586
1587 --coro_nready;
1588 UNLOCK;
1589 break;
1590 } 1684 }
1591
1592 /* free this only after the transfer */
1593 prev_sv = SvRV (coro_current);
1594 ta->prev = SvSTATE (prev_sv);
1595 TRANSFER_CHECK (*ta);
1596 assert (ta->next->flags & CF_READY);
1597 ta->next->flags &= ~CF_READY;
1598 SvRV_set (coro_current, next_sv);
1599
1600 LOCK;
1601 free_coro_mortal (aTHX);
1602 coro_mortal = prev_sv;
1603 UNLOCK;
1604} 1685}
1605 1686
1606static void 1687INLINE void
1607prepare_cede (pTHX_ struct transfer_args *ta) 1688prepare_cede (pTHX_ struct coro_transfer_args *ta)
1608{ 1689{
1609 api_ready (coro_current); 1690 api_ready (aTHX_ coro_current);
1610 prepare_schedule (aTHX_ ta); 1691 prepare_schedule (aTHX_ ta);
1611} 1692}
1612 1693
1694INLINE void
1695prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1696{
1697 SV *prev = SvRV (coro_current);
1698
1699 if (coro_nready)
1700 {
1701 prepare_schedule (aTHX_ ta);
1702 api_ready (aTHX_ prev);
1703 }
1704 else
1705 prepare_nop (aTHX_ ta);
1706}
1707
1708static void
1709api_schedule (pTHX)
1710{
1711 struct coro_transfer_args ta;
1712
1713 prepare_schedule (aTHX_ &ta);
1714 TRANSFER (ta, 1);
1715}
1716
1717static void
1718api_schedule_to (pTHX_ SV *coro_sv)
1719{
1720 struct coro_transfer_args ta;
1721 struct coro *next = SvSTATE (coro_sv);
1722
1723 SvREFCNT_inc_NN (coro_sv);
1724 prepare_schedule_to (aTHX_ &ta, next);
1725}
1726
1613static int 1727static int
1614prepare_cede_notself (pTHX_ struct transfer_args *ta) 1728api_cede (pTHX)
1615{ 1729{
1616 if (coro_nready) 1730 struct coro_transfer_args ta;
1617 { 1731
1618 SV *prev = SvRV (coro_current);
1619 prepare_schedule (aTHX_ ta); 1732 prepare_cede (aTHX_ &ta);
1620 api_ready (prev); 1733
1734 if (expect_true (ta.prev != ta.next))
1735 {
1736 TRANSFER (ta, 1);
1621 return 1; 1737 return 1;
1622 } 1738 }
1623 else 1739 else
1624 return 0; 1740 return 0;
1625} 1741}
1626 1742
1627static void
1628api_schedule (void)
1629{
1630 dTHX;
1631 struct transfer_args ta;
1632
1633 prepare_schedule (aTHX_ &ta);
1634 TRANSFER (ta, 1);
1635}
1636
1637static int 1743static int
1638api_cede (void) 1744api_cede_notself (pTHX)
1639{ 1745{
1640 dTHX; 1746 if (coro_nready)
1747 {
1641 struct transfer_args ta; 1748 struct coro_transfer_args ta;
1642 1749
1643 prepare_cede (aTHX_ &ta); 1750 prepare_cede_notself (aTHX_ &ta);
1644
1645 if (expect_true (ta.prev != ta.next))
1646 {
1647 TRANSFER (ta, 1); 1751 TRANSFER (ta, 1);
1648 return 1; 1752 return 1;
1649 } 1753 }
1650 else 1754 else
1651 return 0; 1755 return 0;
1652} 1756}
1653 1757
1654static int 1758static void
1655api_cede_notself (void)
1656{
1657 dTHX;
1658 struct transfer_args ta;
1659
1660 if (prepare_cede_notself (aTHX_ &ta))
1661 {
1662 TRANSFER (ta, 1);
1663 return 1;
1664 }
1665 else
1666 return 0;
1667}
1668
1669static void
1670api_trace (SV *coro_sv, int flags) 1759api_trace (pTHX_ SV *coro_sv, int flags)
1671{ 1760{
1672 dTHX;
1673 struct coro *coro = SvSTATE (coro_sv); 1761 struct coro *coro = SvSTATE (coro_sv);
1674 1762
1675 if (flags & CC_TRACE) 1763 if (flags & CC_TRACE)
1676 { 1764 {
1677 if (!coro->cctx) 1765 if (!coro->cctx)
1678 coro->cctx = cctx_new_run (); 1766 coro->cctx = cctx_new_run ();
1679 else if (!(coro->cctx->flags & CC_TRACE)) 1767 else if (!(coro->cctx->flags & CC_TRACE))
1680 croak ("cannot enable tracing on coroutine with custom stack"); 1768 croak ("cannot enable tracing on coroutine with custom stack,");
1681 1769
1682 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1770 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1683 } 1771 }
1684 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1772 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1685 { 1773 {
… …
1690 else 1778 else
1691 coro->slot->runops = RUNOPS_DEFAULT; 1779 coro->slot->runops = RUNOPS_DEFAULT;
1692 } 1780 }
1693} 1781}
1694 1782
1695#if 0 1783static void
1784coro_call_on_destroy (pTHX_ struct coro *coro)
1785{
1786 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1787 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1788
1789 if (on_destroyp)
1790 {
1791 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1792
1793 while (AvFILLp (on_destroy) >= 0)
1794 {
1795 dSP; /* don't disturb outer sp */
1796 SV *cb = av_pop (on_destroy);
1797
1798 PUSHMARK (SP);
1799
1800 if (statusp)
1801 {
1802 int i;
1803 AV *status = (AV *)SvRV (*statusp);
1804 EXTEND (SP, AvFILLp (status) + 1);
1805
1806 for (i = 0; i <= AvFILLp (status); ++i)
1807 PUSHs (AvARRAY (status)[i]);
1808 }
1809
1810 PUTBACK;
1811 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1812 }
1813 }
1814}
1815
1816static void
1817slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1818{
1819 int i;
1820 HV *hv = (HV *)SvRV (coro_current);
1821 AV *av = newAV ();
1822
1823 av_extend (av, items - 1);
1824 for (i = 0; i < items; ++i)
1825 av_push (av, SvREFCNT_inc_NN (arg [i]));
1826
1827 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1828
1829 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1830 api_ready (aTHX_ sv_manager);
1831
1832 frame->prepare = prepare_schedule;
1833 frame->check = slf_check_repeat;
1834}
1835
1836/*****************************************************************************/
1837/* async pool handler */
1838
1696static int 1839static int
1697coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1840slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1698{ 1841{
1699 AV *padlist; 1842 HV *hv = (HV *)SvRV (coro_current);
1700 AV *av = (AV *)mg->mg_obj; 1843 struct coro *coro = (struct coro *)frame->data;
1701 1844
1702 abort (); 1845 if (!coro->invoke_cb)
1846 return 1; /* loop till we have invoke */
1847 else
1848 {
1849 hv_store (hv, "desc", sizeof ("desc") - 1,
1850 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1851
1852 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1853
1854 {
1855 dSP;
1856 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1857 PUTBACK;
1858 }
1859
1860 SvREFCNT_dec (GvAV (PL_defgv));
1861 GvAV (PL_defgv) = coro->invoke_av;
1862 coro->invoke_av = 0;
1863
1864 return 0;
1865 }
1866}
1867
1868static void
1869slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1870{
1871 HV *hv = (HV *)SvRV (coro_current);
1872 struct coro *coro = SvSTATE_hv ((SV *)hv);
1873
1874 if (expect_true (coro->saved_deffh))
1875 {
1876 /* subsequent iteration */
1877 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1878 coro->saved_deffh = 0;
1879
1880 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1881 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1882 {
1883 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1884 coro->invoke_av = newAV ();
1885
1886 frame->prepare = prepare_nop;
1887 }
1888 else
1889 {
1890 av_clear (GvAV (PL_defgv));
1891 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1892
1893 coro->prio = 0;
1894
1895 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1896 api_trace (aTHX_ coro_current, 0);
1897
1898 frame->prepare = prepare_schedule;
1899 av_push (av_async_pool, SvREFCNT_inc (hv));
1900 }
1901 }
1902 else
1903 {
1904 /* first iteration, simply fall through */
1905 frame->prepare = prepare_nop;
1906 }
1907
1908 frame->check = slf_check_pool_handler;
1909 frame->data = (void *)coro;
1910}
1911
1912/*****************************************************************************/
1913/* rouse callback */
1914
1915#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1916
1917static void
1918coro_rouse_callback (pTHX_ CV *cv)
1919{
1920 dXSARGS;
1921 SV *data = (SV *)GENSUB_ARG;
1922
1923 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1924 {
1925 /* first call, set args */
1926 AV *av = newAV ();
1927 SV *coro = SvRV (data);
1928
1929 SvRV_set (data, (SV *)av);
1930 api_ready (aTHX_ coro);
1931 SvREFCNT_dec (coro);
1932
1933 /* better take a full copy of the arguments */
1934 while (items--)
1935 av_store (av, items, newSVsv (ST (items)));
1936 }
1937
1938 XSRETURN_EMPTY;
1939}
1940
1941static int
1942slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1943{
1944 SV *data = (SV *)frame->data;
1945
1946 if (CORO_THROW)
1947 return 0;
1948
1949 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1950 return 1;
1951
1952 /* now push all results on the stack */
1953 {
1954 dSP;
1955 AV *av = (AV *)SvRV (data);
1956 int i;
1957
1958 EXTEND (SP, AvFILLp (av) + 1);
1959 for (i = 0; i <= AvFILLp (av); ++i)
1960 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1961
1962 /* we have stolen the elements, so ste length to zero and free */
1963 AvFILLp (av) = -1;
1964 av_undef (av);
1965
1966 PUTBACK;
1967 }
1703 1968
1704 return 0; 1969 return 0;
1705} 1970}
1706 1971
1707static MGVTBL coro_gensub_vtbl = { 1972static void
1708 0, 0, 0, 0, 1973slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1709 coro_gensub_free 1974{
1710}; 1975 SV *cb;
1711#endif 1976
1977 if (items)
1978 cb = arg [0];
1979 else
1980 {
1981 struct coro *coro = SvSTATE_current;
1982
1983 if (!coro->rouse_cb)
1984 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1985
1986 cb = sv_2mortal (coro->rouse_cb);
1987 coro->rouse_cb = 0;
1988 }
1989
1990 if (!SvROK (cb)
1991 || SvTYPE (SvRV (cb)) != SVt_PVCV
1992 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1993 croak ("Coro::rouse_wait called with illegal callback argument,");
1994
1995 {
1996 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1997 SV *data = (SV *)GENSUB_ARG;
1998
1999 frame->data = (void *)data;
2000 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2001 frame->check = slf_check_rouse_wait;
2002 }
2003}
2004
2005static SV *
2006coro_new_rouse_cb (pTHX)
2007{
2008 HV *hv = (HV *)SvRV (coro_current);
2009 struct coro *coro = SvSTATE_hv (hv);
2010 SV *data = newRV_inc ((SV *)hv);
2011 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2012
2013 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2014 SvREFCNT_dec (data); /* magicext increases the refcount */
2015
2016 SvREFCNT_dec (coro->rouse_cb);
2017 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2018
2019 return cb;
2020}
2021
2022/*****************************************************************************/
2023/* schedule-like-function opcode (SLF) */
2024
2025static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2026static const CV *slf_cv;
2027static SV **slf_argv;
2028static int slf_argc, slf_arga; /* count, allocated */
2029static I32 slf_ax; /* top of stack, for restore */
2030
2031/* this restores the stack in the case we patched the entersub, to */
2032/* recreate the stack frame as perl will on following calls */
2033/* since entersub cleared the stack */
2034static OP *
2035pp_restore (pTHX)
2036{
2037 int i;
2038 SV **SP = PL_stack_base + slf_ax;
2039
2040 PUSHMARK (SP);
2041
2042 EXTEND (SP, slf_argc + 1);
2043
2044 for (i = 0; i < slf_argc; ++i)
2045 PUSHs (sv_2mortal (slf_argv [i]));
2046
2047 PUSHs ((SV *)CvGV (slf_cv));
2048
2049 RETURNOP (slf_restore.op_first);
2050}
2051
2052static void
2053slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2054{
2055 SV **arg = (SV **)slf_frame.data;
2056
2057 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2058}
2059
2060static void
2061slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2062{
2063 if (items != 2)
2064 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2065
2066 frame->prepare = slf_prepare_transfer;
2067 frame->check = slf_check_nop;
2068 frame->data = (void *)arg; /* let's hope it will stay valid */
2069}
2070
2071static void
2072slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2073{
2074 frame->prepare = prepare_schedule;
2075 frame->check = slf_check_nop;
2076}
2077
2078static void
2079slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2080{
2081 struct coro *next = (struct coro *)slf_frame.data;
2082
2083 SvREFCNT_inc_NN (next->hv);
2084 prepare_schedule_to (aTHX_ ta, next);
2085}
2086
2087static void
2088slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2089{
2090 if (!items)
2091 croak ("Coro::schedule_to expects a coroutine argument, caught");
2092
2093 frame->data = (void *)SvSTATE (arg [0]);
2094 frame->prepare = slf_prepare_schedule_to;
2095 frame->check = slf_check_nop;
2096}
2097
2098static void
2099slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2100{
2101 api_ready (aTHX_ SvRV (coro_current));
2102
2103 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2104}
2105
2106static void
2107slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2108{
2109 frame->prepare = prepare_cede;
2110 frame->check = slf_check_nop;
2111}
2112
2113static void
2114slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2115{
2116 frame->prepare = prepare_cede_notself;
2117 frame->check = slf_check_nop;
2118}
2119
2120/*
2121 * these not obviously related functions are all rolled into one
2122 * function to increase chances that they all will call transfer with the same
2123 * stack offset
2124 * SLF stands for "schedule-like-function".
2125 */
2126static OP *
2127pp_slf (pTHX)
2128{
2129 I32 checkmark; /* mark SP to see how many elements check has pushed */
2130
2131 /* set up the slf frame, unless it has already been set-up */
2132 /* the latter happens when a new coro has been started */
2133 /* or when a new cctx was attached to an existing coroutine */
2134 if (expect_true (!slf_frame.prepare))
2135 {
2136 /* first iteration */
2137 dSP;
2138 SV **arg = PL_stack_base + TOPMARK + 1;
2139 int items = SP - arg; /* args without function object */
2140 SV *gv = *sp;
2141
2142 /* do a quick consistency check on the "function" object, and if it isn't */
2143 /* for us, divert to the real entersub */
2144 if (SvTYPE (gv) != SVt_PVGV
2145 || !GvCV (gv)
2146 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2147 return PL_ppaddr[OP_ENTERSUB](aTHX);
2148
2149 if (!(PL_op->op_flags & OPf_STACKED))
2150 {
2151 /* ampersand-form of call, use @_ instead of stack */
2152 AV *av = GvAV (PL_defgv);
2153 arg = AvARRAY (av);
2154 items = AvFILLp (av) + 1;
2155 }
2156
2157 /* now call the init function, which needs to set up slf_frame */
2158 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2159 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2160
2161 /* pop args */
2162 SP = PL_stack_base + POPMARK;
2163
2164 PUTBACK;
2165 }
2166
2167 /* now that we have a slf_frame, interpret it! */
2168 /* we use a callback system not to make the code needlessly */
2169 /* complicated, but so we can run multiple perl coros from one cctx */
2170
2171 do
2172 {
2173 struct coro_transfer_args ta;
2174
2175 slf_frame.prepare (aTHX_ &ta);
2176 TRANSFER (ta, 0);
2177
2178 checkmark = PL_stack_sp - PL_stack_base;
2179 }
2180 while (slf_frame.check (aTHX_ &slf_frame));
2181
2182 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2183
2184 /* exception handling */
2185 if (expect_false (CORO_THROW))
2186 {
2187 SV *exception = sv_2mortal (CORO_THROW);
2188
2189 CORO_THROW = 0;
2190 sv_setsv (ERRSV, exception);
2191 croak (0);
2192 }
2193
2194 /* return value handling - mostly like entersub */
2195 /* make sure we put something on the stack in scalar context */
2196 if (GIMME_V == G_SCALAR)
2197 {
2198 dSP;
2199 SV **bot = PL_stack_base + checkmark;
2200
2201 if (sp == bot) /* too few, push undef */
2202 bot [1] = &PL_sv_undef;
2203 else if (sp != bot + 1) /* too many, take last one */
2204 bot [1] = *sp;
2205
2206 SP = bot + 1;
2207
2208 PUTBACK;
2209 }
2210
2211 return NORMAL;
2212}
2213
2214static void
2215api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2216{
2217 int i;
2218 SV **arg = PL_stack_base + ax;
2219 int items = PL_stack_sp - arg + 1;
2220
2221 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2222
2223 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2224 && PL_op->op_ppaddr != pp_slf)
2225 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2226
2227 CvFLAGS (cv) |= CVf_SLF;
2228 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2229 slf_cv = cv;
2230
2231 /* we patch the op, and then re-run the whole call */
2232 /* we have to put the same argument on the stack for this to work */
2233 /* and this will be done by pp_restore */
2234 slf_restore.op_next = (OP *)&slf_restore;
2235 slf_restore.op_type = OP_CUSTOM;
2236 slf_restore.op_ppaddr = pp_restore;
2237 slf_restore.op_first = PL_op;
2238
2239 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2240
2241 if (PL_op->op_flags & OPf_STACKED)
2242 {
2243 if (items > slf_arga)
2244 {
2245 slf_arga = items;
2246 free (slf_argv);
2247 slf_argv = malloc (slf_arga * sizeof (SV *));
2248 }
2249
2250 slf_argc = items;
2251
2252 for (i = 0; i < items; ++i)
2253 slf_argv [i] = SvREFCNT_inc (arg [i]);
2254 }
2255 else
2256 slf_argc = 0;
2257
2258 PL_op->op_ppaddr = pp_slf;
2259 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2260
2261 PL_op = (OP *)&slf_restore;
2262}
1712 2263
1713/*****************************************************************************/ 2264/*****************************************************************************/
1714/* PerlIO::cede */ 2265/* PerlIO::cede */
1715 2266
1716typedef struct 2267typedef struct
… …
1744 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2295 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1745 double now = nvtime (); 2296 double now = nvtime ();
1746 2297
1747 if (now >= self->next) 2298 if (now >= self->next)
1748 { 2299 {
1749 api_cede (); 2300 api_cede (aTHX);
1750 self->next = now + self->every; 2301 self->next = now + self->every;
1751 } 2302 }
1752 2303
1753 return PerlIOBuf_flush (aTHX_ f); 2304 return PerlIOBuf_flush (aTHX_ f);
1754} 2305}
… …
1783 PerlIOBuf_get_ptr, 2334 PerlIOBuf_get_ptr,
1784 PerlIOBuf_get_cnt, 2335 PerlIOBuf_get_cnt,
1785 PerlIOBuf_set_ptrcnt, 2336 PerlIOBuf_set_ptrcnt,
1786}; 2337};
1787 2338
2339/*****************************************************************************/
2340/* Coro::Semaphore & Coro::Signal */
2341
2342static SV *
2343coro_waitarray_new (pTHX_ int count)
2344{
2345 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2346 AV *av = newAV ();
2347 SV **ary;
2348
2349 /* unfortunately, building manually saves memory */
2350 Newx (ary, 2, SV *);
2351 AvALLOC (av) = ary;
2352 /*AvARRAY (av) = ary;*/
2353 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2354 AvMAX (av) = 1;
2355 AvFILLp (av) = 0;
2356 ary [0] = newSViv (count);
2357
2358 return newRV_noinc ((SV *)av);
2359}
2360
2361/* semaphore */
2362
2363static void
2364coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2365{
2366 SV *count_sv = AvARRAY (av)[0];
2367 IV count = SvIVX (count_sv);
2368
2369 count += adjust;
2370 SvIVX (count_sv) = count;
2371
2372 /* now wake up as many waiters as are expected to lock */
2373 while (count > 0 && AvFILLp (av) > 0)
2374 {
2375 SV *cb;
2376
2377 /* swap first two elements so we can shift a waiter */
2378 AvARRAY (av)[0] = AvARRAY (av)[1];
2379 AvARRAY (av)[1] = count_sv;
2380 cb = av_shift (av);
2381
2382 if (SvOBJECT (cb))
2383 {
2384 api_ready (aTHX_ cb);
2385 --count;
2386 }
2387 else if (SvTYPE (cb) == SVt_PVCV)
2388 {
2389 dSP;
2390 PUSHMARK (SP);
2391 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2392 PUTBACK;
2393 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2394 }
2395
2396 SvREFCNT_dec (cb);
2397 }
2398}
2399
2400static void
2401coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2402{
2403 /* call $sem->adjust (0) to possibly wake up some other waiters */
2404 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2405}
2406
2407static int
2408slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2409{
2410 AV *av = (AV *)frame->data;
2411 SV *count_sv = AvARRAY (av)[0];
2412
2413 /* if we are about to throw, don't actually acquire the lock, just throw */
2414 if (CORO_THROW)
2415 return 0;
2416 else if (SvIVX (count_sv) > 0)
2417 {
2418 SvSTATE_current->on_destroy = 0;
2419
2420 if (acquire)
2421 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2422 else
2423 coro_semaphore_adjust (aTHX_ av, 0);
2424
2425 return 0;
2426 }
2427 else
2428 {
2429 int i;
2430 /* if we were woken up but can't down, we look through the whole */
2431 /* waiters list and only add us if we aren't in there already */
2432 /* this avoids some degenerate memory usage cases */
2433
2434 for (i = 1; i <= AvFILLp (av); ++i)
2435 if (AvARRAY (av)[i] == SvRV (coro_current))
2436 return 1;
2437
2438 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2439 return 1;
2440 }
2441}
2442
2443static int
2444slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2445{
2446 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2447}
2448
2449static int
2450slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2451{
2452 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2453}
2454
2455static void
2456slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2457{
2458 AV *av = (AV *)SvRV (arg [0]);
2459
2460 if (SvIVX (AvARRAY (av)[0]) > 0)
2461 {
2462 frame->data = (void *)av;
2463 frame->prepare = prepare_nop;
2464 }
2465 else
2466 {
2467 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2468
2469 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2470 frame->prepare = prepare_schedule;
2471
2472 /* to avoid race conditions when a woken-up coro gets terminated */
2473 /* we arrange for a temporary on_destroy that calls adjust (0) */
2474 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2475 }
2476}
2477
2478static void
2479slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2480{
2481 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2482 frame->check = slf_check_semaphore_down;
2483}
2484
2485static void
2486slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2487{
2488 if (items >= 2)
2489 {
2490 /* callback form */
2491 AV *av = (AV *)SvRV (arg [0]);
2492 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2493
2494 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2495
2496 if (SvIVX (AvARRAY (av)[0]) > 0)
2497 coro_semaphore_adjust (aTHX_ av, 0);
2498
2499 frame->prepare = prepare_nop;
2500 frame->check = slf_check_nop;
2501 }
2502 else
2503 {
2504 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2505 frame->check = slf_check_semaphore_wait;
2506 }
2507}
2508
2509/* signal */
2510
2511static void
2512coro_signal_wake (pTHX_ AV *av, int count)
2513{
2514 SvIVX (AvARRAY (av)[0]) = 0;
2515
2516 /* now signal count waiters */
2517 while (count > 0 && AvFILLp (av) > 0)
2518 {
2519 SV *cb;
2520
2521 /* swap first two elements so we can shift a waiter */
2522 cb = AvARRAY (av)[0];
2523 AvARRAY (av)[0] = AvARRAY (av)[1];
2524 AvARRAY (av)[1] = cb;
2525
2526 cb = av_shift (av);
2527
2528 api_ready (aTHX_ cb);
2529 sv_setiv (cb, 0); /* signal waiter */
2530 SvREFCNT_dec (cb);
2531
2532 --count;
2533 }
2534}
2535
2536static int
2537slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2538{
2539 /* if we are about to throw, also stop waiting */
2540 return SvROK ((SV *)frame->data) && !CORO_THROW;
2541}
2542
2543static void
2544slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2545{
2546 AV *av = (AV *)SvRV (arg [0]);
2547
2548 if (SvIVX (AvARRAY (av)[0]))
2549 {
2550 SvIVX (AvARRAY (av)[0]) = 0;
2551 frame->prepare = prepare_nop;
2552 frame->check = slf_check_nop;
2553 }
2554 else
2555 {
2556 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2557
2558 av_push (av, waiter);
2559
2560 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2561 frame->prepare = prepare_schedule;
2562 frame->check = slf_check_signal_wait;
2563 }
2564}
2565
2566/*****************************************************************************/
2567/* Coro::AIO */
2568
2569#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2570
2571/* helper storage struct */
2572struct io_state
2573{
2574 int errorno;
2575 I32 laststype; /* U16 in 5.10.0 */
2576 int laststatval;
2577 Stat_t statcache;
2578};
2579
2580static void
2581coro_aio_callback (pTHX_ CV *cv)
2582{
2583 dXSARGS;
2584 AV *state = (AV *)GENSUB_ARG;
2585 SV *coro = av_pop (state);
2586 SV *data_sv = newSV (sizeof (struct io_state));
2587
2588 av_extend (state, items - 1);
2589
2590 sv_upgrade (data_sv, SVt_PV);
2591 SvCUR_set (data_sv, sizeof (struct io_state));
2592 SvPOK_only (data_sv);
2593
2594 {
2595 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2596
2597 data->errorno = errno;
2598 data->laststype = PL_laststype;
2599 data->laststatval = PL_laststatval;
2600 data->statcache = PL_statcache;
2601 }
2602
2603 /* now build the result vector out of all the parameters and the data_sv */
2604 {
2605 int i;
2606
2607 for (i = 0; i < items; ++i)
2608 av_push (state, SvREFCNT_inc_NN (ST (i)));
2609 }
2610
2611 av_push (state, data_sv);
2612
2613 api_ready (aTHX_ coro);
2614 SvREFCNT_dec (coro);
2615 SvREFCNT_dec ((AV *)state);
2616}
2617
2618static int
2619slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2620{
2621 AV *state = (AV *)frame->data;
2622
2623 /* if we are about to throw, return early */
2624 /* this does not cancel the aio request, but at least */
2625 /* it quickly returns */
2626 if (CORO_THROW)
2627 return 0;
2628
2629 /* one element that is an RV? repeat! */
2630 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2631 return 1;
2632
2633 /* restore status */
2634 {
2635 SV *data_sv = av_pop (state);
2636 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2637
2638 errno = data->errorno;
2639 PL_laststype = data->laststype;
2640 PL_laststatval = data->laststatval;
2641 PL_statcache = data->statcache;
2642
2643 SvREFCNT_dec (data_sv);
2644 }
2645
2646 /* push result values */
2647 {
2648 dSP;
2649 int i;
2650
2651 EXTEND (SP, AvFILLp (state) + 1);
2652 for (i = 0; i <= AvFILLp (state); ++i)
2653 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2654
2655 PUTBACK;
2656 }
2657
2658 return 0;
2659}
2660
2661static void
2662slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2663{
2664 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2665 SV *coro_hv = SvRV (coro_current);
2666 struct coro *coro = SvSTATE_hv (coro_hv);
2667
2668 /* put our coroutine id on the state arg */
2669 av_push (state, SvREFCNT_inc_NN (coro_hv));
2670
2671 /* first see whether we have a non-zero priority and set it as AIO prio */
2672 if (coro->prio)
2673 {
2674 dSP;
2675
2676 static SV *prio_cv;
2677 static SV *prio_sv;
2678
2679 if (expect_false (!prio_cv))
2680 {
2681 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2682 prio_sv = newSViv (0);
2683 }
2684
2685 PUSHMARK (SP);
2686 sv_setiv (prio_sv, coro->prio);
2687 XPUSHs (prio_sv);
2688
2689 PUTBACK;
2690 call_sv (prio_cv, G_VOID | G_DISCARD);
2691 }
2692
2693 /* now call the original request */
2694 {
2695 dSP;
2696 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2697 int i;
2698
2699 PUSHMARK (SP);
2700
2701 /* first push all args to the stack */
2702 EXTEND (SP, items + 1);
2703
2704 for (i = 0; i < items; ++i)
2705 PUSHs (arg [i]);
2706
2707 /* now push the callback closure */
2708 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2709
2710 /* now call the AIO function - we assume our request is uncancelable */
2711 PUTBACK;
2712 call_sv ((SV *)req, G_VOID | G_DISCARD);
2713 }
2714
2715 /* now that the requets is going, we loop toll we have a result */
2716 frame->data = (void *)state;
2717 frame->prepare = prepare_schedule;
2718 frame->check = slf_check_aio_req;
2719}
2720
2721static void
2722coro_aio_req_xs (pTHX_ CV *cv)
2723{
2724 dXSARGS;
2725
2726 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2727
2728 XSRETURN_EMPTY;
2729}
2730
2731/*****************************************************************************/
2732
2733#if CORO_CLONE
2734# include "clone.c"
2735#endif
1788 2736
1789MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2737MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1790 2738
1791PROTOTYPES: DISABLE 2739PROTOTYPES: DISABLE
1792 2740
1793BOOT: 2741BOOT:
1794{ 2742{
1795#ifdef USE_ITHREADS 2743#ifdef USE_ITHREADS
1796 MUTEX_INIT (&coro_lock);
1797# if CORO_PTHREAD 2744# if CORO_PTHREAD
1798 coro_thx = PERL_GET_CONTEXT; 2745 coro_thx = PERL_GET_CONTEXT;
1799# endif 2746# endif
1800#endif 2747#endif
1801 BOOT_PAGESIZE; 2748 BOOT_PAGESIZE;
2749
2750 cctx_current = cctx_new_empty ();
1802 2751
1803 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2752 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1804 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2753 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1805 2754
1806 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2755 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1822 main_top_env = PL_top_env; 2771 main_top_env = PL_top_env;
1823 2772
1824 while (main_top_env->je_prev) 2773 while (main_top_env->je_prev)
1825 main_top_env = main_top_env->je_prev; 2774 main_top_env = main_top_env->je_prev;
1826 2775
2776 {
2777 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2778
2779 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2780 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2781
2782 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2783 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2784 }
2785
1827 coroapi.ver = CORO_API_VERSION; 2786 coroapi.ver = CORO_API_VERSION;
1828 coroapi.rev = CORO_API_REVISION; 2787 coroapi.rev = CORO_API_REVISION;
2788
1829 coroapi.transfer = api_transfer; 2789 coroapi.transfer = api_transfer;
2790
2791 coroapi.sv_state = SvSTATE_;
2792 coroapi.execute_slf = api_execute_slf;
2793 coroapi.prepare_nop = prepare_nop;
2794 coroapi.prepare_schedule = prepare_schedule;
2795 coroapi.prepare_cede = prepare_cede;
2796 coroapi.prepare_cede_notself = prepare_cede_notself;
1830 2797
1831 { 2798 {
1832 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2799 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1833 2800
1834 if (!svp) croak ("Time::HiRes is required"); 2801 if (!svp) croak ("Time::HiRes is required");
… …
1840 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2807 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1841} 2808}
1842 2809
1843SV * 2810SV *
1844new (char *klass, ...) 2811new (char *klass, ...)
2812 ALIAS:
2813 Coro::new = 1
1845 CODE: 2814 CODE:
1846{ 2815{
1847 struct coro *coro; 2816 struct coro *coro;
1848 MAGIC *mg; 2817 MAGIC *mg;
1849 HV *hv; 2818 HV *hv;
2819 CV *cb;
1850 int i; 2820 int i;
2821
2822 if (items > 1)
2823 {
2824 cb = coro_sv_2cv (aTHX_ ST (1));
2825
2826 if (!ix)
2827 {
2828 if (CvISXSUB (cb))
2829 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2830
2831 if (!CvROOT (cb))
2832 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2833 }
2834 }
1851 2835
1852 Newz (0, coro, 1, struct coro); 2836 Newz (0, coro, 1, struct coro);
1853 coro->args = newAV (); 2837 coro->args = newAV ();
1854 coro->flags = CF_NEW; 2838 coro->flags = CF_NEW;
1855 2839
… …
1860 coro->hv = hv = newHV (); 2844 coro->hv = hv = newHV ();
1861 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2845 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1862 mg->mg_flags |= MGf_DUP; 2846 mg->mg_flags |= MGf_DUP;
1863 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2847 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1864 2848
2849 if (items > 1)
2850 {
1865 av_extend (coro->args, items - 1); 2851 av_extend (coro->args, items - 1 + ix - 1);
2852
2853 if (ix)
2854 {
2855 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2856 cb = cv_coro_run;
2857 }
2858
2859 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2860
1866 for (i = 1; i < items; i++) 2861 for (i = 2; i < items; i++)
1867 av_push (coro->args, newSVsv (ST (i))); 2862 av_push (coro->args, newSVsv (ST (i)));
2863 }
1868} 2864}
1869 OUTPUT: 2865 OUTPUT:
1870 RETVAL 2866 RETVAL
1871 2867
1872# these not obviously related functions are all rolled into the same xs
1873# function to increase chances that they all will call transfer with the same
1874# stack offset
1875void 2868void
1876_set_stacklevel (...) 2869transfer (...)
1877 ALIAS: 2870 PROTOTYPE: $$
1878 Coro::State::transfer = 1 2871 CODE:
1879 Coro::schedule = 2 2872 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1880 Coro::cede = 3
1881 Coro::cede_notself = 4
1882 CODE:
1883{
1884 struct transfer_args ta;
1885
1886 PUTBACK;
1887 switch (ix)
1888 {
1889 case 0:
1890 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1891 ta.next = 0;
1892 break;
1893
1894 case 1:
1895 if (items != 2)
1896 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1897
1898 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1899 break;
1900
1901 case 2:
1902 prepare_schedule (aTHX_ &ta);
1903 break;
1904
1905 case 3:
1906 prepare_cede (aTHX_ &ta);
1907 break;
1908
1909 case 4:
1910 if (!prepare_cede_notself (aTHX_ &ta))
1911 XSRETURN_EMPTY;
1912
1913 break;
1914 }
1915 SPAGAIN;
1916
1917 BARRIER;
1918 PUTBACK;
1919 TRANSFER (ta, 0);
1920 SPAGAIN; /* might be the sp of a different coroutine now */
1921 /* be extra careful not to ever do anything after TRANSFER */
1922}
1923 2873
1924bool 2874bool
1925_destroy (SV *coro_sv) 2875_destroy (SV *coro_sv)
1926 CODE: 2876 CODE:
1927 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2877 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1932_exit (int code) 2882_exit (int code)
1933 PROTOTYPE: $ 2883 PROTOTYPE: $
1934 CODE: 2884 CODE:
1935 _exit (code); 2885 _exit (code);
1936 2886
2887SV *
2888clone (Coro::State coro)
2889 CODE:
2890{
2891#if CORO_CLONE
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#else
2900 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2901#endif
2902}
2903 OUTPUT:
2904 RETVAL
2905
1937int 2906int
1938cctx_stacksize (int new_stacksize = 0) 2907cctx_stacksize (int new_stacksize = 0)
2908 PROTOTYPE: ;$
1939 CODE: 2909 CODE:
1940 RETVAL = cctx_stacksize; 2910 RETVAL = cctx_stacksize;
1941 if (new_stacksize) 2911 if (new_stacksize)
1942 { 2912 {
1943 cctx_stacksize = new_stacksize; 2913 cctx_stacksize = new_stacksize;
… …
1946 OUTPUT: 2916 OUTPUT:
1947 RETVAL 2917 RETVAL
1948 2918
1949int 2919int
1950cctx_max_idle (int max_idle = 0) 2920cctx_max_idle (int max_idle = 0)
2921 PROTOTYPE: ;$
1951 CODE: 2922 CODE:
1952 RETVAL = cctx_max_idle; 2923 RETVAL = cctx_max_idle;
1953 if (max_idle > 1) 2924 if (max_idle > 1)
1954 cctx_max_idle = max_idle; 2925 cctx_max_idle = max_idle;
1955 OUTPUT: 2926 OUTPUT:
1956 RETVAL 2927 RETVAL
1957 2928
1958int 2929int
1959cctx_count () 2930cctx_count ()
2931 PROTOTYPE:
1960 CODE: 2932 CODE:
1961 RETVAL = cctx_count; 2933 RETVAL = cctx_count;
1962 OUTPUT: 2934 OUTPUT:
1963 RETVAL 2935 RETVAL
1964 2936
1965int 2937int
1966cctx_idle () 2938cctx_idle ()
2939 PROTOTYPE:
1967 CODE: 2940 CODE:
1968 RETVAL = cctx_idle; 2941 RETVAL = cctx_idle;
1969 OUTPUT: 2942 OUTPUT:
1970 RETVAL 2943 RETVAL
1971 2944
1972void 2945void
1973list () 2946list ()
2947 PROTOTYPE:
1974 PPCODE: 2948 PPCODE:
1975{ 2949{
1976 struct coro *coro; 2950 struct coro *coro;
1977 for (coro = coro_first; coro; coro = coro->next) 2951 for (coro = coro_first; coro; coro = coro->next)
1978 if (coro->hv) 2952 if (coro->hv)
… …
2037 RETVAL = boolSV (coro->flags & ix); 3011 RETVAL = boolSV (coro->flags & ix);
2038 OUTPUT: 3012 OUTPUT:
2039 RETVAL 3013 RETVAL
2040 3014
2041void 3015void
3016throw (Coro::State self, SV *throw = &PL_sv_undef)
3017 PROTOTYPE: $;$
3018 CODE:
3019{
3020 struct coro *current = SvSTATE_current;
3021 SV **throwp = self == current ? &CORO_THROW : &self->except;
3022 SvREFCNT_dec (*throwp);
3023 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3024}
3025
3026void
2042api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3027api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3028 PROTOTYPE: $;$
3029 C_ARGS: aTHX_ coro, flags
2043 3030
2044SV * 3031SV *
2045has_cctx (Coro::State coro) 3032has_cctx (Coro::State coro)
2046 PROTOTYPE: $ 3033 PROTOTYPE: $
2047 CODE: 3034 CODE:
2048 RETVAL = boolSV (!!coro->cctx); 3035 /* maybe manage the running flag differently */
3036 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2049 OUTPUT: 3037 OUTPUT:
2050 RETVAL 3038 RETVAL
2051 3039
2052int 3040int
2053is_traced (Coro::State coro) 3041is_traced (Coro::State coro)
… …
2071 OUTPUT: 3059 OUTPUT:
2072 RETVAL 3060 RETVAL
2073 3061
2074void 3062void
2075force_cctx () 3063force_cctx ()
3064 PROTOTYPE:
2076 CODE: 3065 CODE:
2077 struct coro *coro = SvSTATE (coro_current);
2078 coro->cctx->idle_sp = 0; 3066 cctx_current->idle_sp = 0;
2079 3067
2080void 3068void
2081swap_defsv (Coro::State self) 3069swap_defsv (Coro::State self)
2082 PROTOTYPE: $ 3070 PROTOTYPE: $
2083 ALIAS: 3071 ALIAS:
2084 swap_defav = 1 3072 swap_defav = 1
2085 CODE: 3073 CODE:
2086 if (!self->slot) 3074 if (!self->slot)
2087 croak ("cannot swap state with coroutine that has no saved state"); 3075 croak ("cannot swap state with coroutine that has no saved state,");
2088 else 3076 else
2089 { 3077 {
2090 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3078 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2091 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3079 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2092 3080
2093 SV *tmp = *src; *src = *dst; *dst = tmp; 3081 SV *tmp = *src; *src = *dst; *dst = tmp;
2094 } 3082 }
2095 3083
3084
2096MODULE = Coro::State PACKAGE = Coro 3085MODULE = Coro::State PACKAGE = Coro
2097 3086
2098BOOT: 3087BOOT:
2099{ 3088{
2100 int i; 3089 int i;
2101 3090
2102 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2103 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3091 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2104 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3092 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2105 3093 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3094 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2106 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3095 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2107 SvREADONLY_on (coro_current); 3096 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3097 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3098 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3099
3100 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3101 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3102 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3103 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2108 3104
2109 coro_stash = gv_stashpv ("Coro", TRUE); 3105 coro_stash = gv_stashpv ("Coro", TRUE);
2110 3106
2111 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3107 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2112 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3108 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2117 3113
2118 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3114 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2119 coro_ready[i] = newAV (); 3115 coro_ready[i] = newAV ();
2120 3116
2121 { 3117 {
2122 SV *sv = perl_get_sv ("Coro::API", TRUE); 3118 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2123 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2124 3119
2125 coroapi.schedule = api_schedule; 3120 coroapi.schedule = api_schedule;
3121 coroapi.schedule_to = api_schedule_to;
2126 coroapi.cede = api_cede; 3122 coroapi.cede = api_cede;
2127 coroapi.cede_notself = api_cede_notself; 3123 coroapi.cede_notself = api_cede_notself;
2128 coroapi.ready = api_ready; 3124 coroapi.ready = api_ready;
2129 coroapi.is_ready = api_is_ready; 3125 coroapi.is_ready = api_is_ready;
2130 coroapi.nready = &coro_nready; 3126 coroapi.nready = coro_nready;
2131 coroapi.current = coro_current; 3127 coroapi.current = coro_current;
2132 3128
2133 GCoroAPI = &coroapi; 3129 /*GCoroAPI = &coroapi;*/
2134 sv_setiv (sv, (IV)&coroapi); 3130 sv_setiv (sv, (IV)&coroapi);
2135 SvREADONLY_on (sv); 3131 SvREADONLY_on (sv);
2136 } 3132 }
2137} 3133}
3134
3135void
3136terminate (...)
3137 CODE:
3138 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3139
3140void
3141schedule (...)
3142 CODE:
3143 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3144
3145void
3146schedule_to (...)
3147 CODE:
3148 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3149
3150void
3151cede_to (...)
3152 CODE:
3153 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3154
3155void
3156cede (...)
3157 CODE:
3158 CORO_EXECUTE_SLF_XS (slf_init_cede);
3159
3160void
3161cede_notself (...)
3162 CODE:
3163 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3164
3165void
3166_cancel (Coro::State self)
3167 CODE:
3168 coro_state_destroy (aTHX_ self);
3169 coro_call_on_destroy (aTHX_ self);
2138 3170
2139void 3171void
2140_set_current (SV *current) 3172_set_current (SV *current)
2141 PROTOTYPE: $ 3173 PROTOTYPE: $
2142 CODE: 3174 CODE:
… …
2145 3177
2146void 3178void
2147_set_readyhook (SV *hook) 3179_set_readyhook (SV *hook)
2148 PROTOTYPE: $ 3180 PROTOTYPE: $
2149 CODE: 3181 CODE:
2150 LOCK;
2151 SvREFCNT_dec (coro_readyhook); 3182 SvREFCNT_dec (coro_readyhook);
2152 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3183 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2153 UNLOCK;
2154 3184
2155int 3185int
2156prio (Coro::State coro, int newprio = 0) 3186prio (Coro::State coro, int newprio = 0)
3187 PROTOTYPE: $;$
2157 ALIAS: 3188 ALIAS:
2158 nice = 1 3189 nice = 1
2159 CODE: 3190 CODE:
2160{ 3191{
2161 RETVAL = coro->prio; 3192 RETVAL = coro->prio;
… …
2176 3207
2177SV * 3208SV *
2178ready (SV *self) 3209ready (SV *self)
2179 PROTOTYPE: $ 3210 PROTOTYPE: $
2180 CODE: 3211 CODE:
2181 RETVAL = boolSV (api_ready (self)); 3212 RETVAL = boolSV (api_ready (aTHX_ self));
2182 OUTPUT: 3213 OUTPUT:
2183 RETVAL 3214 RETVAL
2184 3215
2185int 3216int
2186nready (...) 3217nready (...)
… …
2189 RETVAL = coro_nready; 3220 RETVAL = coro_nready;
2190 OUTPUT: 3221 OUTPUT:
2191 RETVAL 3222 RETVAL
2192 3223
2193void 3224void
2194throw (Coro::State self, SV *throw = &PL_sv_undef) 3225_pool_handler (...)
2195 PROTOTYPE: $;$ 3226 CODE:
2196 CODE: 3227 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2197 SvREFCNT_dec (self->throw);
2198 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2199 3228
2200# for async_pool speedup
2201void 3229void
2202_pool_1 (SV *cb) 3230async_pool (SV *cv, ...)
3231 PROTOTYPE: &@
3232 PPCODE:
3233{
3234 HV *hv = (HV *)av_pop (av_async_pool);
3235 AV *av = newAV ();
3236 SV *cb = ST (0);
3237 int i;
3238
3239 av_extend (av, items - 2);
3240 for (i = 1; i < items; ++i)
3241 av_push (av, SvREFCNT_inc_NN (ST (i)));
3242
3243 if ((SV *)hv == &PL_sv_undef)
3244 {
3245 PUSHMARK (SP);
3246 EXTEND (SP, 2);
3247 PUSHs (sv_Coro);
3248 PUSHs ((SV *)cv_pool_handler);
3249 PUTBACK;
3250 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3251 SPAGAIN;
3252
3253 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3254 }
3255
3256 {
3257 struct coro *coro = SvSTATE_hv (hv);
3258
3259 assert (!coro->invoke_cb);
3260 assert (!coro->invoke_av);
3261 coro->invoke_cb = SvREFCNT_inc (cb);
3262 coro->invoke_av = av;
3263 }
3264
3265 api_ready (aTHX_ (SV *)hv);
3266
3267 if (GIMME_V != G_VOID)
3268 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3269 else
3270 SvREFCNT_dec (hv);
3271}
3272
3273SV *
3274rouse_cb ()
3275 PROTOTYPE:
2203 CODE: 3276 CODE:
2204{ 3277 RETVAL = coro_new_rouse_cb (aTHX);
2205 struct coro *coro = SvSTATE (coro_current);
2206 HV *hv = (HV *)SvRV (coro_current);
2207 AV *defav = GvAV (PL_defgv);
2208 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2209 AV *invoke_av;
2210 int i, len;
2211
2212 if (!invoke)
2213 {
2214 SV *old = PL_diehook;
2215 PL_diehook = 0;
2216 SvREFCNT_dec (old);
2217 croak ("\3async_pool terminate\2\n");
2218 }
2219
2220 SvREFCNT_dec (coro->saved_deffh);
2221 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2222
2223 hv_store (hv, "desc", sizeof ("desc") - 1,
2224 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2225
2226 invoke_av = (AV *)SvRV (invoke);
2227 len = av_len (invoke_av);
2228
2229 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2230
2231 if (len > 0)
2232 {
2233 av_fill (defav, len - 1);
2234 for (i = 0; i < len; ++i)
2235 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2236 }
2237
2238 SvREFCNT_dec (invoke);
2239}
2240
2241void
2242_pool_2 (SV *cb)
2243 CODE:
2244{
2245 struct coro *coro = SvSTATE (coro_current);
2246
2247 sv_setsv (cb, &PL_sv_undef);
2248
2249 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2250 coro->saved_deffh = 0;
2251
2252 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2253 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2254 {
2255 SV *old = PL_diehook;
2256 PL_diehook = 0;
2257 SvREFCNT_dec (old);
2258 croak ("\3async_pool terminate\2\n");
2259 }
2260
2261 av_clear (GvAV (PL_defgv));
2262 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2263 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2264
2265 coro->prio = 0;
2266
2267 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2268 api_trace (coro_current, 0);
2269
2270 av_push (av_async_pool, newSVsv (coro_current));
2271}
2272
2273#if 0
2274
2275void
2276_generator_call (...)
2277 PROTOTYPE: @
2278 PPCODE:
2279 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2280 xxxx
2281 abort ();
2282
2283SV *
2284gensub (SV *sub, ...)
2285 PROTOTYPE: &;@
2286 CODE:
2287{
2288 struct coro *coro;
2289 MAGIC *mg;
2290 CV *xcv;
2291 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2292 int i;
2293
2294 CvGV (ncv) = CvGV (cv);
2295 CvFILE (ncv) = CvFILE (cv);
2296
2297 Newz (0, coro, 1, struct coro);
2298 coro->args = newAV ();
2299 coro->flags = CF_NEW;
2300
2301 av_extend (coro->args, items - 1);
2302 for (i = 1; i < items; i++)
2303 av_push (coro->args, newSVsv (ST (i)));
2304
2305 CvISXSUB_on (ncv);
2306 CvXSUBANY (ncv).any_ptr = (void *)coro;
2307
2308 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2309
2310 CvXSUB (ncv) = CvXSUB (xcv);
2311 CvANON_on (ncv);
2312
2313 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2314 RETVAL = newRV_noinc ((SV *)ncv);
2315}
2316 OUTPUT: 3278 OUTPUT:
2317 RETVAL 3279 RETVAL
2318 3280
2319#endif
2320
2321
2322MODULE = Coro::State PACKAGE = Coro::AIO
2323
2324void 3281void
2325_get_state (SV *self) 3282rouse_wait (...)
3283 PROTOTYPE: ;$
2326 PPCODE: 3284 PPCODE:
2327{ 3285 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2328 AV *defav = GvAV (PL_defgv);
2329 AV *av = newAV ();
2330 int i;
2331 SV *data_sv = newSV (sizeof (struct io_state));
2332 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2333 SvCUR_set (data_sv, sizeof (struct io_state));
2334 SvPOK_only (data_sv);
2335 3286
2336 data->errorno = errno;
2337 data->laststype = PL_laststype;
2338 data->laststatval = PL_laststatval;
2339 data->statcache = PL_statcache;
2340 3287
2341 av_extend (av, AvFILLp (defav) + 1 + 1); 3288MODULE = Coro::State PACKAGE = PerlIO::cede
2342 3289
2343 for (i = 0; i <= AvFILLp (defav); ++i) 3290BOOT:
2344 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3291 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2345 3292
2346 av_push (av, data_sv);
2347 3293
2348 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3294MODULE = Coro::State PACKAGE = Coro::Semaphore
2349 3295
2350 api_ready (self); 3296SV *
2351} 3297new (SV *klass, SV *count = 0)
3298 CODE:
3299 RETVAL = sv_bless (
3300 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3301 GvSTASH (CvGV (cv))
3302 );
3303 OUTPUT:
3304 RETVAL
3305
3306# helper for Coro::Channel
3307SV *
3308_alloc (int count)
3309 CODE:
3310 RETVAL = coro_waitarray_new (aTHX_ count);
3311 OUTPUT:
3312 RETVAL
3313
3314SV *
3315count (SV *self)
3316 CODE:
3317 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3318 OUTPUT:
3319 RETVAL
2352 3320
2353void 3321void
2354_set_state (SV *state) 3322up (SV *self, int adjust = 1)
2355 PROTOTYPE: $ 3323 ALIAS:
3324 adjust = 1
3325 CODE:
3326 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3327
3328void
3329down (...)
3330 CODE:
3331 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3332
3333void
3334wait (...)
3335 CODE:
3336 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3337
3338void
3339try (SV *self)
3340 PPCODE:
3341{
3342 AV *av = (AV *)SvRV (self);
3343 SV *count_sv = AvARRAY (av)[0];
3344 IV count = SvIVX (count_sv);
3345
3346 if (count > 0)
3347 {
3348 --count;
3349 SvIVX (count_sv) = count;
3350 XSRETURN_YES;
3351 }
3352 else
3353 XSRETURN_NO;
3354}
3355
3356void
3357waiters (SV *self)
3358 PPCODE:
3359{
3360 AV *av = (AV *)SvRV (self);
3361 int wcount = AvFILLp (av) + 1 - 1;
3362
3363 if (GIMME_V == G_SCALAR)
3364 XPUSHs (sv_2mortal (newSViv (wcount)));
3365 else
3366 {
3367 int i;
3368 EXTEND (SP, wcount);
3369 for (i = 1; i <= wcount; ++i)
3370 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3371 }
3372}
3373
3374MODULE = Coro::State PACKAGE = Coro::Signal
3375
3376SV *
3377new (SV *klass)
2356 PPCODE: 3378 CODE:
3379 RETVAL = sv_bless (
3380 coro_waitarray_new (aTHX_ 0),
3381 GvSTASH (CvGV (cv))
3382 );
3383 OUTPUT:
3384 RETVAL
3385
3386void
3387wait (...)
3388 CODE:
3389 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3390
3391void
3392broadcast (SV *self)
3393 CODE:
2357{ 3394{
2358 AV *av = (AV *)SvRV (state); 3395 AV *av = (AV *)SvRV (self);
2359 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3396 coro_signal_wake (aTHX_ av, AvFILLp (av));
2360 int i; 3397}
2361 3398
2362 errno = data->errorno; 3399void
2363 PL_laststype = data->laststype; 3400send (SV *self)
2364 PL_laststatval = data->laststatval; 3401 CODE:
2365 PL_statcache = data->statcache; 3402{
3403 AV *av = (AV *)SvRV (self);
2366 3404
2367 EXTEND (SP, AvFILLp (av)); 3405 if (AvFILLp (av))
2368 for (i = 0; i < AvFILLp (av); ++i) 3406 coro_signal_wake (aTHX_ av, 1);
2369 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3407 else
3408 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2370} 3409}
3410
3411IV
3412awaited (SV *self)
3413 CODE:
3414 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3415 OUTPUT:
3416 RETVAL
2371 3417
2372 3418
2373MODULE = Coro::State PACKAGE = Coro::AnyEvent 3419MODULE = Coro::State PACKAGE = Coro::AnyEvent
2374 3420
2375BOOT: 3421BOOT:
2376 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3422 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2377 3423
2378SV * 3424void
2379_schedule (...) 3425_schedule (...)
2380 PROTOTYPE: @
2381 CODE: 3426 CODE:
2382{ 3427{
2383 static int incede; 3428 static int incede;
2384 3429
2385 api_cede_notself (); 3430 api_cede_notself (aTHX);
2386 3431
2387 ++incede; 3432 ++incede;
2388 while (coro_nready >= incede && api_cede ()) 3433 while (coro_nready >= incede && api_cede (aTHX))
2389 ; 3434 ;
2390 3435
2391 sv_setsv (sv_activity, &PL_sv_undef); 3436 sv_setsv (sv_activity, &PL_sv_undef);
2392 if (coro_nready >= incede) 3437 if (coro_nready >= incede)
2393 { 3438 {
2394 PUSHMARK (SP); 3439 PUSHMARK (SP);
2395 PUTBACK; 3440 PUTBACK;
2396 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3441 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2397 SPAGAIN;
2398 } 3442 }
2399 3443
2400 --incede; 3444 --incede;
2401} 3445}
2402 3446
2403 3447
2404MODULE = Coro::State PACKAGE = PerlIO::cede 3448MODULE = Coro::State PACKAGE = Coro::AIO
2405 3449
2406BOOT: 3450void
2407 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3451_register (char *target, char *proto, SV *req)
3452 CODE:
3453{
3454 CV *req_cv = coro_sv_2cv (aTHX_ req);
3455 /* newXSproto doesn't return the CV on 5.8 */
3456 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3457 sv_setpv ((SV *)slf_cv, proto);
3458 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3459}
3460

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines