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Comparing Coro/Coro/State.xs (file contents):
Revision 1.259 by root, Mon Nov 10 00:02:29 2008 UTC vs.
Revision 1.330 by root, Wed Nov 26 09:29:06 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 */
186static volatile char next_has_throw; /* speedup flag for next->throw check */ 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
187 181
188static GV *irsgv; /* $/ */ 182static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 183static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 184static SV *rv_diehook;
191static SV *rv_warnhook; 185static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 186static HV *hv_sig; /* %SIG */
193 187
194/* async_pool helper stuff */ 188/* async_pool helper stuff */
195static SV *sv_pool_rss; 189static SV *sv_pool_rss;
196static SV *sv_pool_size; 190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
198 196
199/* Coro::AnyEvent */ 197/* Coro::AnyEvent */
200static SV *sv_activity; 198static SV *sv_activity;
201 199
202static struct coro_cctx *cctx_first; 200static struct coro_cctx *cctx_first;
… …
210 CC_TRACE_LINE = 0x10, /* trace each statement */ 208 CC_TRACE_LINE = 0x10, /* trace each statement */
211 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
212}; 210};
213 211
214/* this is a structure representing a c-level coroutine */ 212/* this is a structure representing a c-level coroutine */
215typedef struct coro_cctx { 213typedef struct coro_cctx
214{
216 struct coro_cctx *next; 215 struct coro_cctx *next;
217 216
218 /* the stack */ 217 /* the stack */
219 void *sptr; 218 void *sptr;
220 size_t ssize; 219 size_t ssize;
… …
229#if CORO_USE_VALGRIND 228#if CORO_USE_VALGRIND
230 int valgrind_id; 229 int valgrind_id;
231#endif 230#endif
232 unsigned char flags; 231 unsigned char flags;
233} coro_cctx; 232} coro_cctx;
233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
234 237
235enum { 238enum {
236 CF_RUNNING = 0x0001, /* coroutine is running */ 239 CF_RUNNING = 0x0001, /* coroutine is running */
237 CF_READY = 0x0002, /* coroutine is ready */ 240 CF_READY = 0x0002, /* coroutine is ready */
238 CF_NEW = 0x0004, /* has never been switched to */ 241 CF_NEW = 0x0004, /* has never been switched to */
239 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
240}; 243};
241 244
242/* the structure where most of the perl state is stored, overlaid on the cxstack */ 245/* the structure where most of the perl state is stored, overlaid on the cxstack */
243typedef struct { 246typedef struct
247{
244 SV *defsv; 248 SV *defsv;
245 AV *defav; 249 AV *defav;
246 SV *errsv; 250 SV *errsv;
247 SV *irsgv; 251 SV *irsgv;
252 HV *hinthv;
248#define VAR(name,type) type name; 253#define VAR(name,type) type name;
249# include "state.h" 254# include "state.h"
250#undef VAR 255#undef VAR
251} perl_slots; 256} perl_slots;
252 257
253#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
254 259
255/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
256struct coro { 261struct coro {
257 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the C coroutine allocated to this perl coroutine, if any */
258 coro_cctx *cctx; 263 coro_cctx *cctx;
259 264
260 /* process data */ 265 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */
261 AV *mainstack; 267 AV *mainstack;
262 perl_slots *slot; /* basically the saved sp */ 268 perl_slots *slot; /* basically the saved sp */
263 269
270 CV *startcv; /* the CV to execute */
264 AV *args; /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
265 int refcnt; /* coroutines are refcounted, yes */ 272 int refcnt; /* coroutines are refcounted, yes */
266 int flags; /* CF_ flags */ 273 int flags; /* CF_ flags */
267 HV *hv; /* the perl hash associated with this coro, if any */ 274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
268 276
269 /* statistics */ 277 /* statistics */
270 int usecount; /* number of transfers to this coro */ 278 int usecount; /* number of transfers to this coro */
271 279
272 /* coro process data */ 280 /* coro process data */
273 int prio; 281 int prio;
274 SV *throw; /* exception to be thrown */ 282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
275 284
276 /* async_pool */ 285 /* async_pool */
277 SV *saved_deffh; 286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
278 289
279 /* linked list */ 290 /* linked list */
280 struct coro *next, *prev; 291 struct coro *next, *prev;
281}; 292};
282 293
283typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
284typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
296
297/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
285 301
286/** Coro ********************************************************************/ 302/** Coro ********************************************************************/
287 303
288#define PRIO_MAX 3 304#define PRIO_MAX 3
289#define PRIO_HIGH 1 305#define PRIO_HIGH 1
… …
294 310
295/* for Coro.pm */ 311/* for Coro.pm */
296static SV *coro_current; 312static SV *coro_current;
297static SV *coro_readyhook; 313static SV *coro_readyhook;
298static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
299static int coro_nready; 315static CV *cv_coro_run, *cv_coro_terminate;
300static struct coro *coro_first; 316static struct coro *coro_first;
317#define coro_nready coroapi.nready
301 318
302/** lowlevel stuff **********************************************************/ 319/** lowlevel stuff **********************************************************/
303 320
304static SV * 321static SV *
305coro_get_sv (pTHX_ const char *name, int create) 322coro_get_sv (pTHX_ const char *name, int create)
… …
329 get_hv (name, create); 346 get_hv (name, create);
330#endif 347#endif
331 return get_hv (name, create); 348 return get_hv (name, create);
332} 349}
333 350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
334static AV * 360static AV *
335coro_clone_padlist (pTHX_ CV *cv) 361coro_derive_padlist (pTHX_ CV *cv)
336{ 362{
337 AV *padlist = CvPADLIST (cv); 363 AV *padlist = CvPADLIST (cv);
338 AV *newpadlist, *newpad; 364 AV *newpadlist, *newpad;
339 365
340 newpadlist = newAV (); 366 newpadlist = newAV ();
… …
360 if (SvREFCNT (padlist)) 386 if (SvREFCNT (padlist))
361 { 387 {
362 I32 i = AvFILLp (padlist); 388 I32 i = AvFILLp (padlist);
363 while (i >= 0) 389 while (i >= 0)
364 { 390 {
365 SV **svp = av_fetch (padlist, i--, FALSE); 391 SV **svp = AvARRAY (padlist)[i--];
366 if (svp) 392 if (svp)
367 { 393 {
368 SV *sv; 394 AvREAL_on (*svp);
369 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp)))
370 SvREFCNT_dec (sv); 395 av_undef (*svp);
371
372 SvREFCNT_dec (*svp); 396 SvREFCNT_dec (*svp);
373 } 397 }
374 } 398 }
375 399
376 SvREFCNT_dec ((SV*)padlist); 400 SvREFCNT_dec ((SV*)padlist);
… …
390 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 414 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
391 415
392 return 0; 416 return 0;
393} 417}
394 418
395#define CORO_MAGIC_type_cv PERL_MAGIC_ext 419#define CORO_MAGIC_type_cv 26
396#define CORO_MAGIC_type_state PERL_MAGIC_ext 420#define CORO_MAGIC_type_state PERL_MAGIC_ext
397 421
398static MGVTBL coro_cv_vtbl = { 422static MGVTBL coro_cv_vtbl = {
399 0, 0, 0, 0, 423 0, 0, 0, 0,
400 coro_cv_free 424 coro_cv_free
401}; 425};
402 426
427#define CORO_MAGIC_NN(sv, type) \
428 (expect_true (SvMAGIC (sv)->mg_type == type) \
429 ? SvMAGIC (sv) \
430 : mg_find (sv, type))
431
403#define CORO_MAGIC(sv, type) \ 432#define CORO_MAGIC(sv, type) \
404 SvMAGIC (sv) \ 433 (expect_true (SvMAGIC (sv)) \
405 ? SvMAGIC (sv)->mg_type == type \ 434 ? CORO_MAGIC_NN (sv, type) \
406 ? SvMAGIC (sv) \
407 : mg_find (sv, type) \
408 : 0 435 : 0)
409 436
410#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)
411#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)
412 439
413static struct coro * 440INLINE struct coro *
414SvSTATE_ (pTHX_ SV *coro) 441SvSTATE_ (pTHX_ SV *coro)
415{ 442{
416 HV *stash; 443 HV *stash;
417 MAGIC *mg; 444 MAGIC *mg;
418 445
… …
433 mg = CORO_MAGIC_state (coro); 460 mg = CORO_MAGIC_state (coro);
434 return (struct coro *)mg->mg_ptr; 461 return (struct coro *)mg->mg_ptr;
435} 462}
436 463
437#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))
438 469
439/* the next two functions merely cache the padlists */ 470/* the next two functions merely cache the padlists */
440static void 471static void
441get_padlist (pTHX_ CV *cv) 472get_padlist (pTHX_ CV *cv)
442{ 473{
… …
448 else 479 else
449 { 480 {
450#if CORO_PREFER_PERL_FUNCTIONS 481#if CORO_PREFER_PERL_FUNCTIONS
451 /* this is probably cleaner? but also slower! */ 482 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */ 483 /* in practise, it seems to be less stable */
453 CV *cp = Perl_cv_clone (cv); 484 CV *cp = Perl_cv_clone (aTHX_ cv);
454 CvPADLIST (cv) = CvPADLIST (cp); 485 CvPADLIST (cv) = CvPADLIST (cp);
455 CvPADLIST (cp) = 0; 486 CvPADLIST (cp) = 0;
456 SvREFCNT_dec (cp); 487 SvREFCNT_dec (cp);
457#else 488#else
458 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 489 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
459#endif 490#endif
460 } 491 }
461} 492}
462 493
463static void 494static void
… …
470 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 501 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
471 502
472 av = (AV *)mg->mg_obj; 503 av = (AV *)mg->mg_obj;
473 504
474 if (expect_false (AvFILLp (av) >= AvMAX (av))) 505 if (expect_false (AvFILLp (av) >= AvMAX (av)))
475 av_extend (av, AvMAX (av) + 1); 506 av_extend (av, AvFILLp (av) + 1);
476 507
477 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 508 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
478} 509}
479 510
480/** load & save, init *******************************************************/ 511/** load & save, init *******************************************************/
… …
485 perl_slots *slot = c->slot; 516 perl_slots *slot = c->slot;
486 c->slot = 0; 517 c->slot = 0;
487 518
488 PL_mainstack = c->mainstack; 519 PL_mainstack = c->mainstack;
489 520
490 GvSV (PL_defgv) = slot->defsv; 521 GvSV (PL_defgv) = slot->defsv;
491 GvAV (PL_defgv) = slot->defav; 522 GvAV (PL_defgv) = slot->defav;
492 GvSV (PL_errgv) = slot->errsv; 523 GvSV (PL_errgv) = slot->errsv;
493 GvSV (irsgv) = slot->irsgv; 524 GvSV (irsgv) = slot->irsgv;
525 GvHV (PL_hintgv) = slot->hinthv;
494 526
495 #define VAR(name,type) PL_ ## name = slot->name; 527 #define VAR(name,type) PL_ ## name = slot->name;
496 # include "state.h" 528 # include "state.h"
497 #undef VAR 529 #undef VAR
498 530
… …
509 CvPADLIST (cv) = (AV *)POPs; 541 CvPADLIST (cv) = (AV *)POPs;
510 } 542 }
511 543
512 PUTBACK; 544 PUTBACK;
513 } 545 }
546
547 slf_frame = c->slf_frame;
548 CORO_THROW = c->except;
514} 549}
515 550
516static void 551static void
517save_perl (pTHX_ Coro__State c) 552save_perl (pTHX_ Coro__State c)
518{ 553{
554 c->except = CORO_THROW;
555 c->slf_frame = slf_frame;
556
519 { 557 {
520 dSP; 558 dSP;
521 I32 cxix = cxstack_ix; 559 I32 cxix = cxstack_ix;
522 PERL_CONTEXT *ccstk = cxstack; 560 PERL_CONTEXT *ccstk = cxstack;
523 PERL_SI *top_si = PL_curstackinfo; 561 PERL_SI *top_si = PL_curstackinfo;
… …
578 c->mainstack = PL_mainstack; 616 c->mainstack = PL_mainstack;
579 617
580 { 618 {
581 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 619 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
582 620
583 slot->defav = GvAV (PL_defgv); 621 slot->defav = GvAV (PL_defgv);
584 slot->defsv = DEFSV; 622 slot->defsv = DEFSV;
585 slot->errsv = ERRSV; 623 slot->errsv = ERRSV;
586 slot->irsgv = GvSV (irsgv); 624 slot->irsgv = GvSV (irsgv);
625 slot->hinthv = GvHV (PL_hintgv);
587 626
588 #define VAR(name,type) slot->name = PL_ ## name; 627 #define VAR(name,type) slot->name = PL_ ## name;
589 # include "state.h" 628 # include "state.h"
590 #undef VAR 629 #undef VAR
591 } 630 }
592} 631}
593 632
594/* 633/*
595 * allocate various perl stacks. This is an exact copy 634 * allocate various perl stacks. This is almost an exact copy
596 * of perl.c:init_stacks, except that it uses less memory 635 * of perl.c:init_stacks, except that it uses less memory
597 * on the (sometimes correct) assumption that coroutines do 636 * on the (sometimes correct) assumption that coroutines do
598 * not usually need a lot of stackspace. 637 * not usually need a lot of stackspace.
599 */ 638 */
600#if CORO_PREFER_PERL_FUNCTIONS 639#if CORO_PREFER_PERL_FUNCTIONS
601# define coro_init_stacks init_stacks 640# define coro_init_stacks(thx) init_stacks ()
602#else 641#else
603static void 642static void
604coro_init_stacks (pTHX) 643coro_init_stacks (pTHX)
605{ 644{
606 PL_curstackinfo = new_stackinfo(32, 8); 645 PL_curstackinfo = new_stackinfo(32, 8);
… …
669#if !PERL_VERSION_ATLEAST (5,10,0) 708#if !PERL_VERSION_ATLEAST (5,10,0)
670 Safefree (PL_retstack); 709 Safefree (PL_retstack);
671#endif 710#endif
672} 711}
673 712
713#define CORO_RSS \
714 rss += sizeof (SYM (curstackinfo)); \
715 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
716 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
717 rss += SYM (tmps_max) * sizeof (SV *); \
718 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
719 rss += SYM (scopestack_max) * sizeof (I32); \
720 rss += SYM (savestack_max) * sizeof (ANY);
721
674static size_t 722static size_t
675coro_rss (pTHX_ struct coro *coro) 723coro_rss (pTHX_ struct coro *coro)
676{ 724{
677 size_t rss = sizeof (*coro); 725 size_t rss = sizeof (*coro);
678 726
679 if (coro->mainstack) 727 if (coro->mainstack)
680 { 728 {
681 perl_slots tmp_slot;
682 perl_slots *slot;
683
684 if (coro->flags & CF_RUNNING) 729 if (coro->flags & CF_RUNNING)
685 { 730 {
686 slot = &tmp_slot; 731 #define SYM(sym) PL_ ## sym
687 732 CORO_RSS;
688 #define VAR(name,type) slot->name = PL_ ## name;
689 # include "state.h"
690 #undef VAR 733 #undef SYM
691 } 734 }
692 else 735 else
693 slot = coro->slot;
694
695 if (slot)
696 { 736 {
697 rss += sizeof (slot->curstackinfo); 737 #define SYM(sym) coro->slot->sym
698 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 738 CORO_RSS;
699 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 739 #undef SYM
700 rss += slot->tmps_max * sizeof (SV *);
701 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
702 rss += slot->scopestack_max * sizeof (I32);
703 rss += slot->savestack_max * sizeof (ANY);
704
705#if !PERL_VERSION_ATLEAST (5,10,0)
706 rss += slot->retstack_max * sizeof (OP *);
707#endif
708 } 740 }
709 } 741 }
710 742
711 return rss; 743 return rss;
712} 744}
… …
802 834
803 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
804} 836}
805 837
806static void 838static void
839prepare_nop (pTHX_ struct coro_transfer_args *ta)
840{
841 /* kind of mega-hacky, but works */
842 ta->next = ta->prev = (struct coro *)ta;
843}
844
845static int
846slf_check_nop (pTHX_ struct CoroSLF *frame)
847{
848 return 0;
849}
850
851static int
852slf_check_repeat (pTHX_ struct CoroSLF *frame)
853{
854 return 1;
855}
856
857static UNOP coro_setup_op;
858
859static void NOINLINE /* noinline to keep it out of the transfer fast path */
807coro_setup (pTHX_ struct coro *coro) 860coro_setup (pTHX_ struct coro *coro)
808{ 861{
809 /* 862 /*
810 * emulate part of the perl startup here. 863 * emulate part of the perl startup here.
811 */ 864 */
… …
813 866
814 PL_runops = RUNOPS_DEFAULT; 867 PL_runops = RUNOPS_DEFAULT;
815 PL_curcop = &PL_compiling; 868 PL_curcop = &PL_compiling;
816 PL_in_eval = EVAL_NULL; 869 PL_in_eval = EVAL_NULL;
817 PL_comppad = 0; 870 PL_comppad = 0;
871 PL_comppad_name = 0;
872 PL_comppad_name_fill = 0;
873 PL_comppad_name_floor = 0;
818 PL_curpm = 0; 874 PL_curpm = 0;
819 PL_curpad = 0; 875 PL_curpad = 0;
820 PL_localizing = 0; 876 PL_localizing = 0;
821 PL_dirty = 0; 877 PL_dirty = 0;
822 PL_restartop = 0; 878 PL_restartop = 0;
823#if PERL_VERSION_ATLEAST (5,10,0) 879#if PERL_VERSION_ATLEAST (5,10,0)
824 PL_parser = 0; 880 PL_parser = 0;
825#endif 881#endif
882 PL_hints = 0;
826 883
827 /* recreate the die/warn hooks */ 884 /* recreate the die/warn hooks */
828 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 885 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
829 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 886 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
830 887
831 GvSV (PL_defgv) = newSV (0); 888 GvSV (PL_defgv) = newSV (0);
832 GvAV (PL_defgv) = coro->args; coro->args = 0; 889 GvAV (PL_defgv) = coro->args; coro->args = 0;
833 GvSV (PL_errgv) = newSV (0); 890 GvSV (PL_errgv) = newSV (0);
834 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 891 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
892 GvHV (PL_hintgv) = 0;
835 PL_rs = newSVsv (GvSV (irsgv)); 893 PL_rs = newSVsv (GvSV (irsgv));
836 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 894 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
837 895
838 { 896 {
839 dSP; 897 dSP;
840 LOGOP myop; 898 UNOP myop;
841 899
842 Zero (&myop, 1, LOGOP); 900 Zero (&myop, 1, UNOP);
843 myop.op_next = Nullop; 901 myop.op_next = Nullop;
902 myop.op_type = OP_ENTERSUB;
844 myop.op_flags = OPf_WANT_VOID; 903 myop.op_flags = OPf_WANT_VOID;
845 904
846 PUSHMARK (SP); 905 PUSHMARK (SP);
847 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 906 PUSHs ((SV *)coro->startcv);
848 PUTBACK; 907 PUTBACK;
849 PL_op = (OP *)&myop; 908 PL_op = (OP *)&myop;
850 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 909 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
851 SPAGAIN;
852 } 910 }
853 911
854 /* this newly created coroutine might be run on an existing cctx which most 912 /* this newly created coroutine might be run on an existing cctx which most
855 * likely was suspended in set_stacklevel, called from entersub. 913 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
856 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
857 * so we ENTER here for symmetry
858 */ 914 */
859 ENTER; 915 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
916 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
917
918 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
919 coro_setup_op.op_next = PL_op;
920 coro_setup_op.op_type = OP_ENTERSUB;
921 coro_setup_op.op_ppaddr = pp_slf;
922 /* no flags etc. required, as an init function won't be called */
923
924 PL_op = (OP *)&coro_setup_op;
925
926 /* copy throw, in case it was set before coro_setup */
927 CORO_THROW = coro->except;
860} 928}
861 929
862static void 930static void
863coro_destruct (pTHX_ struct coro *coro) 931coro_destruct (pTHX_ struct coro *coro)
864{ 932{
… …
883 SvREFCNT_dec (GvAV (PL_defgv)); 951 SvREFCNT_dec (GvAV (PL_defgv));
884 SvREFCNT_dec (GvSV (PL_errgv)); 952 SvREFCNT_dec (GvSV (PL_errgv));
885 SvREFCNT_dec (PL_defoutgv); 953 SvREFCNT_dec (PL_defoutgv);
886 SvREFCNT_dec (PL_rs); 954 SvREFCNT_dec (PL_rs);
887 SvREFCNT_dec (GvSV (irsgv)); 955 SvREFCNT_dec (GvSV (irsgv));
956 SvREFCNT_dec (GvHV (PL_hintgv));
888 957
889 SvREFCNT_dec (PL_diehook); 958 SvREFCNT_dec (PL_diehook);
890 SvREFCNT_dec (PL_warnhook); 959 SvREFCNT_dec (PL_warnhook);
891 960
892 SvREFCNT_dec (coro->saved_deffh); 961 SvREFCNT_dec (coro->saved_deffh);
893 SvREFCNT_dec (coro->throw); 962 SvREFCNT_dec (coro->rouse_cb);
963 SvREFCNT_dec (coro->invoke_cb);
964 SvREFCNT_dec (coro->invoke_av);
894 965
895 coro_destruct_stacks (aTHX); 966 coro_destruct_stacks (aTHX);
896} 967}
897 968
898static void 969INLINE void
899free_coro_mortal (pTHX) 970free_coro_mortal (pTHX)
900{ 971{
901 if (expect_true (coro_mortal)) 972 if (expect_true (coro_mortal))
902 { 973 {
903 SvREFCNT_dec (coro_mortal); 974 SvREFCNT_dec (coro_mortal);
… …
908static int 979static int
909runops_trace (pTHX) 980runops_trace (pTHX)
910{ 981{
911 COP *oldcop = 0; 982 COP *oldcop = 0;
912 int oldcxix = -2; 983 int oldcxix = -2;
913 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
914 coro_cctx *cctx = coro->cctx;
915 984
916 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 985 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
917 { 986 {
918 PERL_ASYNC_CHECK (); 987 PERL_ASYNC_CHECK ();
919 988
920 if (cctx->flags & CC_TRACE_ALL) 989 if (cctx_current->flags & CC_TRACE_ALL)
921 { 990 {
922 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 991 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
923 { 992 {
924 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 993 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
925 SV **bot, **top; 994 SV **bot, **top;
926 AV *av = newAV (); /* return values */ 995 AV *av = newAV (); /* return values */
927 SV **cb; 996 SV **cb;
… …
964 1033
965 if (PL_curcop != &PL_compiling) 1034 if (PL_curcop != &PL_compiling)
966 { 1035 {
967 SV **cb; 1036 SV **cb;
968 1037
969 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1038 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
970 { 1039 {
971 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1040 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
972 1041
973 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1042 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
974 { 1043 {
975 runops_proc_t old_runops = PL_runops;
976 dSP; 1044 dSP;
977 GV *gv = CvGV (cx->blk_sub.cv); 1045 GV *gv = CvGV (cx->blk_sub.cv);
978 SV *fullname = sv_2mortal (newSV (0)); 1046 SV *fullname = sv_2mortal (newSV (0));
979 1047
980 if (isGV (gv)) 1048 if (isGV (gv))
… …
985 SAVETMPS; 1053 SAVETMPS;
986 EXTEND (SP, 3); 1054 EXTEND (SP, 3);
987 PUSHMARK (SP); 1055 PUSHMARK (SP);
988 PUSHs (&PL_sv_yes); 1056 PUSHs (&PL_sv_yes);
989 PUSHs (fullname); 1057 PUSHs (fullname);
990 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1058 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
991 PUTBACK; 1059 PUTBACK;
992 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1060 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
993 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1061 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
994 SPAGAIN; 1062 SPAGAIN;
995 FREETMPS; 1063 FREETMPS;
… …
998 } 1066 }
999 1067
1000 oldcxix = cxstack_ix; 1068 oldcxix = cxstack_ix;
1001 } 1069 }
1002 1070
1003 if (cctx->flags & CC_TRACE_LINE) 1071 if (cctx_current->flags & CC_TRACE_LINE)
1004 { 1072 {
1005 dSP; 1073 dSP;
1006 1074
1007 PL_runops = RUNOPS_DEFAULT; 1075 PL_runops = RUNOPS_DEFAULT;
1008 ENTER; 1076 ENTER;
… …
1027 1095
1028 TAINT_NOT; 1096 TAINT_NOT;
1029 return 0; 1097 return 0;
1030} 1098}
1031 1099
1032/* inject a fake call to Coro::State::_cctx_init into the execution */ 1100static struct CoroSLF cctx_ssl_frame;
1033/* _cctx_init should be careful, as it could be called at almost any time */ 1101
1034/* during execution of a perl program */ 1102static void
1035/* also initialises PL_top_env */ 1103slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1104{
1105 ta->prev = 0;
1106}
1107
1108static int
1109slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1110{
1111 *frame = cctx_ssl_frame;
1112
1113 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1114}
1115
1116/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1036static void NOINLINE 1117static void NOINLINE
1037cctx_prepare (pTHX_ coro_cctx *cctx) 1118cctx_prepare (pTHX)
1038{ 1119{
1039 dSP;
1040 LOGOP myop;
1041
1042 PL_top_env = &PL_start_env; 1120 PL_top_env = &PL_start_env;
1043 1121
1044 if (cctx->flags & CC_TRACE) 1122 if (cctx_current->flags & CC_TRACE)
1045 PL_runops = runops_trace; 1123 PL_runops = runops_trace;
1046 1124
1047 Zero (&myop, 1, LOGOP); 1125 /* we already must be executing an SLF op, there is no other valid way
1048 myop.op_next = PL_op; 1126 * that can lead to creation of a new cctx */
1049 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1127 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1128 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1050 1129
1051 PUSHMARK (SP); 1130 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1052 EXTEND (SP, 2); 1131 cctx_ssl_frame = slf_frame;
1053 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
1054 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1055 PUTBACK;
1056 PL_op = (OP *)&myop;
1057 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1058 SPAGAIN;
1059}
1060 1132
1133 slf_frame.prepare = slf_prepare_set_stacklevel;
1134 slf_frame.check = slf_check_set_stacklevel;
1135}
1136
1061/* the tail of transfer: execute stuff we can onyl do afetr a transfer */ 1137/* the tail of transfer: execute stuff we can only do after a transfer */
1062static void 1138INLINE void
1063transfer_tail (void) 1139transfer_tail (pTHX)
1064{ 1140{
1065 UNLOCK; 1141 free_coro_mortal (aTHX);
1066
1067 if (expect_false (next_has_throw))
1068 {
1069 struct coro *coro = SvSTATE (coro_current);
1070
1071 if (coro->throw)
1072 {
1073 SV *exception = coro->throw;
1074 coro->throw = 0;
1075 sv_setsv (ERRSV, exception);
1076 croak (0);
1077 }
1078 }
1079} 1142}
1080 1143
1081/* 1144/*
1082 * this is a _very_ stripped down perl interpreter ;) 1145 * this is a _very_ stripped down perl interpreter ;)
1083 */ 1146 */
… …
1090# endif 1153# endif
1091#endif 1154#endif
1092 { 1155 {
1093 dTHX; 1156 dTHX;
1094 1157
1095 /* we now skip the entersub that lead to transfer () */ 1158 /* normally we would need to skip the entersub here */
1159 /* not doing so will re-execute it, which is exactly what we want */
1096 PL_op = PL_op->op_next; 1160 /* PL_nop = PL_nop->op_next */
1097 1161
1098 /* inject a fake subroutine call to cctx_init */ 1162 /* inject a fake subroutine call to cctx_init */
1099 cctx_prepare (aTHX_ (coro_cctx *)arg); 1163 cctx_prepare (aTHX);
1100 1164
1101 /* cctx_run is the alternative tail of transfer () */ 1165 /* cctx_run is the alternative tail of transfer() */
1102 transfer_tail (); 1166 transfer_tail (aTHX);
1103 1167
1104 /* somebody or something will hit me for both perl_run and PL_restartop */ 1168 /* somebody or something will hit me for both perl_run and PL_restartop */
1105 PL_restartop = PL_op; 1169 PL_restartop = PL_op;
1106 perl_run (PL_curinterp); 1170 perl_run (PL_curinterp);
1171 /*
1172 * Unfortunately, there is no way to get at the return values of the
1173 * coro body here, as perl_run destroys these
1174 */
1107 1175
1108 /* 1176 /*
1109 * If perl-run returns we assume exit() was being called or the coro 1177 * If perl-run returns we assume exit() was being called or the coro
1110 * fell off the end, which seems to be the only valid (non-bug) 1178 * fell off the end, which seems to be the only valid (non-bug)
1111 * reason for perl_run to return. We try to exit by jumping to the 1179 * reason for perl_run to return. We try to exit by jumping to the
1112 * bootstrap-time "top" top_env, as we cannot restore the "main" 1180 * bootstrap-time "top" top_env, as we cannot restore the "main"
1113 * coroutine as Coro has no such concept 1181 * coroutine as Coro has no such concept.
1182 * This actually isn't valid with the pthread backend, but OSes requiring
1183 * that backend are too broken to do it in a standards-compliant way.
1114 */ 1184 */
1115 PL_top_env = main_top_env; 1185 PL_top_env = main_top_env;
1116 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1186 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1117 } 1187 }
1118} 1188}
… …
1125 ++cctx_count; 1195 ++cctx_count;
1126 New (0, cctx, 1, coro_cctx); 1196 New (0, cctx, 1, coro_cctx);
1127 1197
1128 cctx->gen = cctx_gen; 1198 cctx->gen = cctx_gen;
1129 cctx->flags = 0; 1199 cctx->flags = 0;
1130 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel */ 1200 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1131 1201
1132 return cctx; 1202 return cctx;
1133} 1203}
1134 1204
1135/* create a new cctx only suitable as source */ 1205/* create a new cctx only suitable as source */
… …
1157 /* mmap supposedly does allocate-on-write for us */ 1227 /* mmap supposedly does allocate-on-write for us */
1158 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1228 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1159 1229
1160 if (cctx->sptr != (void *)-1) 1230 if (cctx->sptr != (void *)-1)
1161 { 1231 {
1162# if CORO_STACKGUARD 1232 #if CORO_STACKGUARD
1163 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1233 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1164# endif 1234 #endif
1165 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1235 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1166 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1236 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1167 cctx->flags |= CC_MAPPED; 1237 cctx->flags |= CC_MAPPED;
1168 } 1238 }
1169 else 1239 else
1170#endif 1240#endif
1171 { 1241 {
1172 cctx->ssize = cctx_stacksize * (long)sizeof (long); 1242 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1173 New (0, cctx->sptr, cctx_stacksize, long); 1243 New (0, cctx->sptr, cctx_stacksize, long);
1174 1244
1175 if (!cctx->sptr) 1245 if (!cctx->sptr)
1176 { 1246 {
1177 perror ("FATAL: unable to allocate stack for coroutine"); 1247 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1178 _exit (EXIT_FAILURE); 1248 _exit (EXIT_FAILURE);
1179 } 1249 }
1180 1250
1181 stack_start = cctx->sptr; 1251 stack_start = cctx->sptr;
1182 stack_size = cctx->ssize; 1252 stack_size = cctx->ssize;
1183 } 1253 }
1184 1254
1185 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1255 #if CORO_USE_VALGRIND
1256 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1257 #endif
1258
1186 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1259 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1187 1260
1188 return cctx; 1261 return cctx;
1189} 1262}
1190 1263
… …
1192cctx_destroy (coro_cctx *cctx) 1265cctx_destroy (coro_cctx *cctx)
1193{ 1266{
1194 if (!cctx) 1267 if (!cctx)
1195 return; 1268 return;
1196 1269
1270 assert (cctx != cctx_current);//D temporary
1271
1197 --cctx_count; 1272 --cctx_count;
1198 coro_destroy (&cctx->cctx); 1273 coro_destroy (&cctx->cctx);
1199 1274
1200 /* coro_transfer creates new, empty cctx's */ 1275 /* coro_transfer creates new, empty cctx's */
1201 if (cctx->sptr) 1276 if (cctx->sptr)
1202 { 1277 {
1203#if CORO_USE_VALGRIND 1278 #if CORO_USE_VALGRIND
1204 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1279 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1205#endif 1280 #endif
1206 1281
1207#if HAVE_MMAP 1282#if HAVE_MMAP
1208 if (cctx->flags & CC_MAPPED) 1283 if (cctx->flags & CC_MAPPED)
1209 munmap (cctx->sptr, cctx->ssize); 1284 munmap (cctx->sptr, cctx->ssize);
1210 else 1285 else
… …
1237} 1312}
1238 1313
1239static void 1314static void
1240cctx_put (coro_cctx *cctx) 1315cctx_put (coro_cctx *cctx)
1241{ 1316{
1242 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1317 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1243 1318
1244 /* free another cctx if overlimit */ 1319 /* free another cctx if overlimit */
1245 if (expect_false (cctx_idle >= cctx_max_idle)) 1320 if (expect_false (cctx_idle >= cctx_max_idle))
1246 { 1321 {
1247 coro_cctx *first = cctx_first; 1322 coro_cctx *first = cctx_first;
… …
1259/** coroutine switching *****************************************************/ 1334/** coroutine switching *****************************************************/
1260 1335
1261static void 1336static void
1262transfer_check (pTHX_ struct coro *prev, struct coro *next) 1337transfer_check (pTHX_ struct coro *prev, struct coro *next)
1263{ 1338{
1339 /* TODO: throwing up here is considered harmful */
1340
1264 if (expect_true (prev != next)) 1341 if (expect_true (prev != next))
1265 { 1342 {
1266 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1343 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1267 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1344 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1268 1345
1269 if (expect_false (next->flags & CF_RUNNING)) 1346 if (expect_false (next->flags & CF_RUNNING))
1270 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1347 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1271 1348
1272 if (expect_false (next->flags & CF_DESTROYED)) 1349 if (expect_false (next->flags & CF_DESTROYED))
1273 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1350 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1274 1351
1275#if !PERL_VERSION_ATLEAST (5,10,0) 1352#if !PERL_VERSION_ATLEAST (5,10,0)
1276 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1353 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1277 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1354 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1278#endif 1355#endif
1279 } 1356 }
1280} 1357}
1281 1358
1282/* always use the TRANSFER macro */ 1359/* always use the TRANSFER macro */
1283static void NOINLINE 1360static void NOINLINE /* noinline so we have a fixed stackframe */
1284transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1361transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1285{ 1362{
1286 dSTACKLEVEL; 1363 dSTACKLEVEL;
1287 1364
1288 /* sometimes transfer is only called to set idle_sp */ 1365 /* sometimes transfer is only called to set idle_sp */
1289 if (expect_false (!next)) 1366 if (expect_false (!prev))
1290 { 1367 {
1291 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1368 cctx_current->idle_sp = STACKLEVEL;
1292 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1369 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1293 } 1370 }
1294 else if (expect_true (prev != next)) 1371 else if (expect_true (prev != next))
1295 { 1372 {
1296 coro_cctx *prev__cctx; 1373 coro_cctx *cctx_prev;
1297 1374
1298 if (expect_false (prev->flags & CF_NEW)) 1375 if (expect_false (prev->flags & CF_NEW))
1299 { 1376 {
1300 /* create a new empty/source context */ 1377 /* create a new empty/source context */
1301 prev->cctx = cctx_new_empty ();
1302 prev->flags &= ~CF_NEW; 1378 prev->flags &= ~CF_NEW;
1303 prev->flags |= CF_RUNNING; 1379 prev->flags |= CF_RUNNING;
1304 } 1380 }
1305 1381
1306 prev->flags &= ~CF_RUNNING; 1382 prev->flags &= ~CF_RUNNING;
1307 next->flags |= CF_RUNNING; 1383 next->flags |= CF_RUNNING;
1308
1309 LOCK;
1310 1384
1311 /* first get rid of the old state */ 1385 /* first get rid of the old state */
1312 save_perl (aTHX_ prev); 1386 save_perl (aTHX_ prev);
1313 1387
1314 if (expect_false (next->flags & CF_NEW)) 1388 if (expect_false (next->flags & CF_NEW))
… …
1319 coro_setup (aTHX_ next); 1393 coro_setup (aTHX_ next);
1320 } 1394 }
1321 else 1395 else
1322 load_perl (aTHX_ next); 1396 load_perl (aTHX_ next);
1323 1397
1324 prev__cctx = prev->cctx; 1398 assert (!prev->cctx);//D temporary
1325 1399
1326 if (prev__cctx->idle_sp == STACKLEVEL) asm volatile("");//D
1327
1328 /* possibly "free" the cctx */ 1400 /* possibly untie and reuse the cctx */
1329 if (expect_true ( 1401 if (expect_true (
1330 prev__cctx->idle_sp == STACKLEVEL 1402 cctx_current->idle_sp == STACKLEVEL
1331 && !(prev__cctx->flags & CC_TRACE) 1403 && !(cctx_current->flags & CC_TRACE)
1332 && !force_cctx 1404 && !force_cctx
1333 )) 1405 ))
1334 { 1406 {
1335 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1407 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1336 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1408 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1337 1409
1338 prev->cctx = 0;
1339
1340 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1410 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1341 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1411 /* without this the next cctx_get might destroy the running cctx while still in use */
1342 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1412 if (expect_false (CCTX_EXPIRED (cctx_current)))
1343 if (!next->cctx) 1413 if (expect_true (!next->cctx))
1344 next->cctx = cctx_get (aTHX); 1414 next->cctx = cctx_get (aTHX);
1345 1415
1346 cctx_put (prev__cctx); 1416 cctx_put (cctx_current);
1347 } 1417 }
1418 else
1419 prev->cctx = cctx_current;
1348 1420
1349 ++next->usecount; 1421 ++next->usecount;
1350 1422
1351 if (expect_true (!next->cctx)) 1423 cctx_prev = cctx_current;
1352 next->cctx = cctx_get (aTHX); 1424 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1353 1425
1354 next_has_throw = !!next->throw; 1426 next->cctx = 0;
1355 1427
1356 if (expect_false (prev__cctx != next->cctx)) 1428 if (expect_false (cctx_prev != cctx_current))
1357 { 1429 {
1358 prev__cctx->top_env = PL_top_env; 1430 cctx_prev->top_env = PL_top_env;
1359 PL_top_env = next->cctx->top_env; 1431 PL_top_env = cctx_current->top_env;
1360 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1432 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1361 } 1433 }
1362 1434
1363 free_coro_mortal (aTHX);
1364 UNLOCK;
1365
1366 transfer_tail (); 1435 transfer_tail (aTHX);
1367 } 1436 }
1368} 1437}
1369
1370struct transfer_args
1371{
1372 struct coro *prev, *next;
1373};
1374 1438
1375#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1439#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1376#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1440#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1377 1441
1378/** high level stuff ********************************************************/ 1442/** high level stuff ********************************************************/
… …
1380static int 1444static int
1381coro_state_destroy (pTHX_ struct coro *coro) 1445coro_state_destroy (pTHX_ struct coro *coro)
1382{ 1446{
1383 if (coro->flags & CF_DESTROYED) 1447 if (coro->flags & CF_DESTROYED)
1384 return 0; 1448 return 0;
1449
1450 if (coro->on_destroy)
1451 coro->on_destroy (aTHX_ coro);
1385 1452
1386 coro->flags |= CF_DESTROYED; 1453 coro->flags |= CF_DESTROYED;
1387 1454
1388 if (coro->flags & CF_READY) 1455 if (coro->flags & CF_READY)
1389 { 1456 {
1390 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1457 /* reduce nready, as destroying a ready coro effectively unreadies it */
1391 /* alternative: look through all ready queues and remove the coro */ 1458 /* alternative: look through all ready queues and remove the coro */
1392 LOCK;
1393 --coro_nready; 1459 --coro_nready;
1394 UNLOCK;
1395 } 1460 }
1396 else 1461 else
1397 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1462 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1398 1463
1399 if (coro->mainstack && coro->mainstack != main_mainstack) 1464 if (coro->mainstack && coro->mainstack != main_mainstack)
1400 { 1465 {
1401 struct coro temp; 1466 struct coro temp;
1402 1467
1403 if (coro->flags & CF_RUNNING) 1468 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1404 croak ("FATAL: tried to destroy currently running coroutine");
1405 1469
1406 save_perl (aTHX_ &temp); 1470 save_perl (aTHX_ &temp);
1407 load_perl (aTHX_ coro); 1471 load_perl (aTHX_ coro);
1408 1472
1409 coro_destruct (aTHX_ coro); 1473 coro_destruct (aTHX_ coro);
… …
1412 1476
1413 coro->slot = 0; 1477 coro->slot = 0;
1414 } 1478 }
1415 1479
1416 cctx_destroy (coro->cctx); 1480 cctx_destroy (coro->cctx);
1481 SvREFCNT_dec (coro->startcv);
1417 SvREFCNT_dec (coro->args); 1482 SvREFCNT_dec (coro->args);
1483 SvREFCNT_dec (CORO_THROW);
1418 1484
1419 if (coro->next) coro->next->prev = coro->prev; 1485 if (coro->next) coro->next->prev = coro->prev;
1420 if (coro->prev) coro->prev->next = coro->next; 1486 if (coro->prev) coro->prev->next = coro->next;
1421 if (coro == coro_first) coro_first = coro->next; 1487 if (coro == coro_first) coro_first = coro->next;
1422 1488
… …
1460# define MGf_DUP 0 1526# define MGf_DUP 0
1461#endif 1527#endif
1462}; 1528};
1463 1529
1464static void 1530static void
1465prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1531prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1466{ 1532{
1467 ta->prev = SvSTATE (prev_sv); 1533 ta->prev = SvSTATE (prev_sv);
1468 ta->next = SvSTATE (next_sv); 1534 ta->next = SvSTATE (next_sv);
1469 TRANSFER_CHECK (*ta); 1535 TRANSFER_CHECK (*ta);
1470} 1536}
1471 1537
1472static void 1538static void
1473api_transfer (SV *prev_sv, SV *next_sv) 1539api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1474{ 1540{
1475 dTHX;
1476 struct transfer_args ta; 1541 struct coro_transfer_args ta;
1477 1542
1478 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1543 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1479 TRANSFER (ta, 1); 1544 TRANSFER (ta, 1);
1480} 1545}
1481 1546
1547/*****************************************************************************/
1548/* gensub: simple closure generation utility */
1549
1550#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1551
1552/* create a closure from XS, returns a code reference */
1553/* the arg can be accessed via GENSUB_ARG from the callback */
1554/* the callback must use dXSARGS/XSRETURN */
1555static SV *
1556gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1557{
1558 CV *cv = (CV *)newSV (0);
1559
1560 sv_upgrade ((SV *)cv, SVt_PVCV);
1561
1562 CvANON_on (cv);
1563 CvISXSUB_on (cv);
1564 CvXSUB (cv) = xsub;
1565 GENSUB_ARG = arg;
1566
1567 return newRV_noinc ((SV *)cv);
1568}
1569
1482/** Coro ********************************************************************/ 1570/** Coro ********************************************************************/
1483 1571
1484static void 1572INLINE void
1485coro_enq (pTHX_ SV *coro_sv) 1573coro_enq (pTHX_ struct coro *coro)
1486{ 1574{
1487 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1575 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1488} 1576}
1489 1577
1490static SV * 1578INLINE SV *
1491coro_deq (pTHX) 1579coro_deq (pTHX)
1492{ 1580{
1493 int prio; 1581 int prio;
1494 1582
1495 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1583 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1498 1586
1499 return 0; 1587 return 0;
1500} 1588}
1501 1589
1502static int 1590static int
1503api_ready (SV *coro_sv) 1591api_ready (pTHX_ SV *coro_sv)
1504{ 1592{
1505 dTHX;
1506 struct coro *coro; 1593 struct coro *coro;
1507 SV *sv_hook; 1594 SV *sv_hook;
1508 void (*xs_hook)(void); 1595 void (*xs_hook)(void);
1509 1596
1510 if (SvROK (coro_sv))
1511 coro_sv = SvRV (coro_sv);
1512
1513 coro = SvSTATE (coro_sv); 1597 coro = SvSTATE (coro_sv);
1514 1598
1515 if (coro->flags & CF_READY) 1599 if (coro->flags & CF_READY)
1516 return 0; 1600 return 0;
1517 1601
1518 coro->flags |= CF_READY; 1602 coro->flags |= CF_READY;
1519 1603
1520 LOCK;
1521
1522 sv_hook = coro_nready ? 0 : coro_readyhook; 1604 sv_hook = coro_nready ? 0 : coro_readyhook;
1523 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1605 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1524 1606
1525 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1607 coro_enq (aTHX_ coro);
1526 ++coro_nready; 1608 ++coro_nready;
1527 1609
1528 UNLOCK;
1529
1530 if (sv_hook) 1610 if (sv_hook)
1531 { 1611 {
1532 dSP; 1612 dSP;
1533 1613
1534 ENTER; 1614 ENTER;
1535 SAVETMPS; 1615 SAVETMPS;
1536 1616
1537 PUSHMARK (SP); 1617 PUSHMARK (SP);
1538 PUTBACK; 1618 PUTBACK;
1539 call_sv (sv_hook, G_DISCARD); 1619 call_sv (sv_hook, G_VOID | G_DISCARD);
1540 SPAGAIN;
1541 1620
1542 FREETMPS; 1621 FREETMPS;
1543 LEAVE; 1622 LEAVE;
1544 } 1623 }
1545 1624
… …
1548 1627
1549 return 1; 1628 return 1;
1550} 1629}
1551 1630
1552static int 1631static int
1553api_is_ready (SV *coro_sv) 1632api_is_ready (pTHX_ SV *coro_sv)
1554{ 1633{
1555 dTHX;
1556 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1634 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1557} 1635}
1558 1636
1559static void 1637/* expects to own a reference to next->hv */
1638INLINE void
1560prepare_schedule (pTHX_ struct transfer_args *ta) 1639prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1561{ 1640{
1562 SV *prev_sv, *next_sv;
1563
1564 for (;;)
1565 {
1566 LOCK;
1567 next_sv = coro_deq (aTHX);
1568
1569 /* nothing to schedule: call the idle handler */
1570 if (expect_false (!next_sv))
1571 {
1572 dSP;
1573 UNLOCK;
1574
1575 ENTER;
1576 SAVETMPS;
1577
1578 PUSHMARK (SP);
1579 PUTBACK;
1580 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1581 SPAGAIN;
1582
1583 FREETMPS;
1584 LEAVE;
1585 continue;
1586 }
1587
1588 ta->next = SvSTATE (next_sv);
1589
1590 /* cannot transfer to destroyed coros, skip and look for next */
1591 if (expect_false (ta->next->flags & CF_DESTROYED))
1592 {
1593 UNLOCK;
1594 SvREFCNT_dec (next_sv);
1595 /* coro_nready is already taken care of by destroy */
1596 continue;
1597 }
1598
1599 --coro_nready;
1600 UNLOCK;
1601 break;
1602 }
1603
1604 /* free this only after the transfer */
1605 prev_sv = SvRV (coro_current); 1641 SV *prev_sv = SvRV (coro_current);
1642
1606 ta->prev = SvSTATE (prev_sv); 1643 ta->prev = SvSTATE_hv (prev_sv);
1644 ta->next = next;
1645
1607 TRANSFER_CHECK (*ta); 1646 TRANSFER_CHECK (*ta);
1608 assert (ta->next->flags & CF_READY); 1647
1609 ta->next->flags &= ~CF_READY;
1610 SvRV_set (coro_current, next_sv); 1648 SvRV_set (coro_current, (SV *)next->hv);
1611 1649
1612 LOCK;
1613 free_coro_mortal (aTHX); 1650 free_coro_mortal (aTHX);
1614 coro_mortal = prev_sv; 1651 coro_mortal = prev_sv;
1615 UNLOCK;
1616} 1652}
1617 1653
1618static void 1654static void
1655prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1656{
1657 for (;;)
1658 {
1659 SV *next_sv = coro_deq (aTHX);
1660
1661 if (expect_true (next_sv))
1662 {
1663 struct coro *next = SvSTATE_hv (next_sv);
1664
1665 /* cannot transfer to destroyed coros, skip and look for next */
1666 if (expect_false (next->flags & CF_DESTROYED))
1667 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1668 else
1669 {
1670 next->flags &= ~CF_READY;
1671 --coro_nready;
1672
1673 prepare_schedule_to (aTHX_ ta, next);
1674 break;
1675 }
1676 }
1677 else
1678 {
1679 /* nothing to schedule: call the idle handler */
1680 if (SvROK (sv_idle)
1681 && SvOBJECT (SvRV (sv_idle)))
1682 {
1683 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1684 api_ready (aTHX_ SvRV (sv_idle));
1685 --coro_nready;
1686 }
1687 else
1688 {
1689 dSP;
1690
1691 ENTER;
1692 SAVETMPS;
1693
1694 PUSHMARK (SP);
1695 PUTBACK;
1696 call_sv (sv_idle, G_VOID | G_DISCARD);
1697
1698 FREETMPS;
1699 LEAVE;
1700 }
1701 }
1702 }
1703}
1704
1705INLINE void
1619prepare_cede (pTHX_ struct transfer_args *ta) 1706prepare_cede (pTHX_ struct coro_transfer_args *ta)
1620{ 1707{
1621 api_ready (coro_current); 1708 api_ready (aTHX_ coro_current);
1622 prepare_schedule (aTHX_ ta); 1709 prepare_schedule (aTHX_ ta);
1623} 1710}
1624 1711
1712INLINE void
1713prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1714{
1715 SV *prev = SvRV (coro_current);
1716
1717 if (coro_nready)
1718 {
1719 prepare_schedule (aTHX_ ta);
1720 api_ready (aTHX_ prev);
1721 }
1722 else
1723 prepare_nop (aTHX_ ta);
1724}
1725
1726static void
1727api_schedule (pTHX)
1728{
1729 struct coro_transfer_args ta;
1730
1731 prepare_schedule (aTHX_ &ta);
1732 TRANSFER (ta, 1);
1733}
1734
1735static void
1736api_schedule_to (pTHX_ SV *coro_sv)
1737{
1738 struct coro_transfer_args ta;
1739 struct coro *next = SvSTATE (coro_sv);
1740
1741 SvREFCNT_inc_NN (coro_sv);
1742 prepare_schedule_to (aTHX_ &ta, next);
1743}
1744
1625static int 1745static int
1626prepare_cede_notself (pTHX_ struct transfer_args *ta) 1746api_cede (pTHX)
1627{ 1747{
1628 if (coro_nready) 1748 struct coro_transfer_args ta;
1629 { 1749
1630 SV *prev = SvRV (coro_current);
1631 prepare_schedule (aTHX_ ta); 1750 prepare_cede (aTHX_ &ta);
1632 api_ready (prev); 1751
1752 if (expect_true (ta.prev != ta.next))
1753 {
1754 TRANSFER (ta, 1);
1633 return 1; 1755 return 1;
1634 } 1756 }
1635 else 1757 else
1636 return 0; 1758 return 0;
1637} 1759}
1638 1760
1639static void
1640api_schedule (void)
1641{
1642 dTHX;
1643 struct transfer_args ta;
1644
1645 prepare_schedule (aTHX_ &ta);
1646 TRANSFER (ta, 1);
1647}
1648
1649static int 1761static int
1650api_cede (void) 1762api_cede_notself (pTHX)
1651{ 1763{
1652 dTHX; 1764 if (coro_nready)
1765 {
1653 struct transfer_args ta; 1766 struct coro_transfer_args ta;
1654 1767
1655 prepare_cede (aTHX_ &ta); 1768 prepare_cede_notself (aTHX_ &ta);
1656
1657 if (expect_true (ta.prev != ta.next))
1658 {
1659 TRANSFER (ta, 1); 1769 TRANSFER (ta, 1);
1660 return 1; 1770 return 1;
1661 } 1771 }
1662 else 1772 else
1663 return 0; 1773 return 0;
1664} 1774}
1665 1775
1666static int 1776static void
1667api_cede_notself (void)
1668{
1669 dTHX;
1670 struct transfer_args ta;
1671
1672 if (prepare_cede_notself (aTHX_ &ta))
1673 {
1674 TRANSFER (ta, 1);
1675 return 1;
1676 }
1677 else
1678 return 0;
1679}
1680
1681static void
1682api_trace (SV *coro_sv, int flags) 1777api_trace (pTHX_ SV *coro_sv, int flags)
1683{ 1778{
1684 dTHX;
1685 struct coro *coro = SvSTATE (coro_sv); 1779 struct coro *coro = SvSTATE (coro_sv);
1780
1781 if (coro->flags & CF_RUNNING)
1782 croak ("cannot enable tracing on a running coroutine, caught");
1686 1783
1687 if (flags & CC_TRACE) 1784 if (flags & CC_TRACE)
1688 { 1785 {
1689 if (!coro->cctx) 1786 if (!coro->cctx)
1690 coro->cctx = cctx_new_run (); 1787 coro->cctx = cctx_new_run ();
1691 else if (!(coro->cctx->flags & CC_TRACE)) 1788 else if (!(coro->cctx->flags & CC_TRACE))
1692 croak ("cannot enable tracing on coroutine with custom stack"); 1789 croak ("cannot enable tracing on coroutine with custom stack, caught");
1693 1790
1694 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1791 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1695 } 1792 }
1696 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1793 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1697 { 1794 {
… …
1702 else 1799 else
1703 coro->slot->runops = RUNOPS_DEFAULT; 1800 coro->slot->runops = RUNOPS_DEFAULT;
1704 } 1801 }
1705} 1802}
1706 1803
1707#if 0 1804static void
1805coro_call_on_destroy (pTHX_ struct coro *coro)
1806{
1807 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1808 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1809
1810 if (on_destroyp)
1811 {
1812 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1813
1814 while (AvFILLp (on_destroy) >= 0)
1815 {
1816 dSP; /* don't disturb outer sp */
1817 SV *cb = av_pop (on_destroy);
1818
1819 PUSHMARK (SP);
1820
1821 if (statusp)
1822 {
1823 int i;
1824 AV *status = (AV *)SvRV (*statusp);
1825 EXTEND (SP, AvFILLp (status) + 1);
1826
1827 for (i = 0; i <= AvFILLp (status); ++i)
1828 PUSHs (AvARRAY (status)[i]);
1829 }
1830
1831 PUTBACK;
1832 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1833 }
1834 }
1835}
1836
1837static void
1838slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 int i;
1841 HV *hv = (HV *)SvRV (coro_current);
1842 AV *av = newAV ();
1843
1844 av_extend (av, items - 1);
1845 for (i = 0; i < items; ++i)
1846 av_push (av, SvREFCNT_inc_NN (arg [i]));
1847
1848 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1849
1850 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1851 api_ready (aTHX_ sv_manager);
1852
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_repeat;
1855}
1856
1857/*****************************************************************************/
1858/* async pool handler */
1859
1708static int 1860static int
1709coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1861slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1710{ 1862{
1711 AV *padlist; 1863 HV *hv = (HV *)SvRV (coro_current);
1712 AV *av = (AV *)mg->mg_obj; 1864 struct coro *coro = (struct coro *)frame->data;
1713 1865
1714 abort (); 1866 if (!coro->invoke_cb)
1867 return 1; /* loop till we have invoke */
1868 else
1869 {
1870 hv_store (hv, "desc", sizeof ("desc") - 1,
1871 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1872
1873 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1874
1875 {
1876 dSP;
1877 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1878 PUTBACK;
1879 }
1880
1881 SvREFCNT_dec (GvAV (PL_defgv));
1882 GvAV (PL_defgv) = coro->invoke_av;
1883 coro->invoke_av = 0;
1884
1885 return 0;
1886 }
1887}
1888
1889static void
1890slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1891{
1892 HV *hv = (HV *)SvRV (coro_current);
1893 struct coro *coro = SvSTATE_hv ((SV *)hv);
1894
1895 if (expect_true (coro->saved_deffh))
1896 {
1897 /* subsequent iteration */
1898 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1899 coro->saved_deffh = 0;
1900
1901 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1902 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1903 {
1904 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1905 coro->invoke_av = newAV ();
1906
1907 frame->prepare = prepare_nop;
1908 }
1909 else
1910 {
1911 av_clear (GvAV (PL_defgv));
1912 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1913
1914 coro->prio = 0;
1915
1916 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1917 api_trace (aTHX_ coro_current, 0);
1918
1919 frame->prepare = prepare_schedule;
1920 av_push (av_async_pool, SvREFCNT_inc (hv));
1921 }
1922 }
1923 else
1924 {
1925 /* first iteration, simply fall through */
1926 frame->prepare = prepare_nop;
1927 }
1928
1929 frame->check = slf_check_pool_handler;
1930 frame->data = (void *)coro;
1931}
1932
1933/*****************************************************************************/
1934/* rouse callback */
1935
1936#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1937
1938static void
1939coro_rouse_callback (pTHX_ CV *cv)
1940{
1941 dXSARGS;
1942 SV *data = (SV *)GENSUB_ARG;
1943
1944 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1945 {
1946 /* first call, set args */
1947 AV *av = newAV ();
1948 SV *coro = SvRV (data);
1949
1950 SvRV_set (data, (SV *)av);
1951 api_ready (aTHX_ coro);
1952 SvREFCNT_dec (coro);
1953
1954 /* better take a full copy of the arguments */
1955 while (items--)
1956 av_store (av, items, newSVsv (ST (items)));
1957 }
1958
1959 XSRETURN_EMPTY;
1960}
1961
1962static int
1963slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1964{
1965 SV *data = (SV *)frame->data;
1966
1967 if (CORO_THROW)
1968 return 0;
1969
1970 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1971 return 1;
1972
1973 /* now push all results on the stack */
1974 {
1975 dSP;
1976 AV *av = (AV *)SvRV (data);
1977 int i;
1978
1979 EXTEND (SP, AvFILLp (av) + 1);
1980 for (i = 0; i <= AvFILLp (av); ++i)
1981 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1982
1983 /* we have stolen the elements, so ste length to zero and free */
1984 AvFILLp (av) = -1;
1985 av_undef (av);
1986
1987 PUTBACK;
1988 }
1715 1989
1716 return 0; 1990 return 0;
1717} 1991}
1718 1992
1719static MGVTBL coro_gensub_vtbl = { 1993static void
1720 0, 0, 0, 0, 1994slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1721 coro_gensub_free 1995{
1722}; 1996 SV *cb;
1723#endif 1997
1998 if (items)
1999 cb = arg [0];
2000 else
2001 {
2002 struct coro *coro = SvSTATE_current;
2003
2004 if (!coro->rouse_cb)
2005 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2006
2007 cb = sv_2mortal (coro->rouse_cb);
2008 coro->rouse_cb = 0;
2009 }
2010
2011 if (!SvROK (cb)
2012 || SvTYPE (SvRV (cb)) != SVt_PVCV
2013 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2014 croak ("Coro::rouse_wait called with illegal callback argument,");
2015
2016 {
2017 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2018 SV *data = (SV *)GENSUB_ARG;
2019
2020 frame->data = (void *)data;
2021 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2022 frame->check = slf_check_rouse_wait;
2023 }
2024}
2025
2026static SV *
2027coro_new_rouse_cb (pTHX)
2028{
2029 HV *hv = (HV *)SvRV (coro_current);
2030 struct coro *coro = SvSTATE_hv (hv);
2031 SV *data = newRV_inc ((SV *)hv);
2032 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2033
2034 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2035 SvREFCNT_dec (data); /* magicext increases the refcount */
2036
2037 SvREFCNT_dec (coro->rouse_cb);
2038 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2039
2040 return cb;
2041}
2042
2043/*****************************************************************************/
2044/* schedule-like-function opcode (SLF) */
2045
2046static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2047static const CV *slf_cv;
2048static SV **slf_argv;
2049static int slf_argc, slf_arga; /* count, allocated */
2050static I32 slf_ax; /* top of stack, for restore */
2051
2052/* this restores the stack in the case we patched the entersub, to */
2053/* recreate the stack frame as perl will on following calls */
2054/* since entersub cleared the stack */
2055static OP *
2056pp_restore (pTHX)
2057{
2058 int i;
2059 SV **SP = PL_stack_base + slf_ax;
2060
2061 PUSHMARK (SP);
2062
2063 EXTEND (SP, slf_argc + 1);
2064
2065 for (i = 0; i < slf_argc; ++i)
2066 PUSHs (sv_2mortal (slf_argv [i]));
2067
2068 PUSHs ((SV *)CvGV (slf_cv));
2069
2070 RETURNOP (slf_restore.op_first);
2071}
2072
2073static void
2074slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2075{
2076 SV **arg = (SV **)slf_frame.data;
2077
2078 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2079}
2080
2081static void
2082slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2083{
2084 if (items != 2)
2085 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2086
2087 frame->prepare = slf_prepare_transfer;
2088 frame->check = slf_check_nop;
2089 frame->data = (void *)arg; /* let's hope it will stay valid */
2090}
2091
2092static void
2093slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2094{
2095 frame->prepare = prepare_schedule;
2096 frame->check = slf_check_nop;
2097}
2098
2099static void
2100slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2101{
2102 struct coro *next = (struct coro *)slf_frame.data;
2103
2104 SvREFCNT_inc_NN (next->hv);
2105 prepare_schedule_to (aTHX_ ta, next);
2106}
2107
2108static void
2109slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2110{
2111 if (!items)
2112 croak ("Coro::schedule_to expects a coroutine argument, caught");
2113
2114 frame->data = (void *)SvSTATE (arg [0]);
2115 frame->prepare = slf_prepare_schedule_to;
2116 frame->check = slf_check_nop;
2117}
2118
2119static void
2120slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2121{
2122 api_ready (aTHX_ SvRV (coro_current));
2123
2124 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2125}
2126
2127static void
2128slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2129{
2130 frame->prepare = prepare_cede;
2131 frame->check = slf_check_nop;
2132}
2133
2134static void
2135slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2136{
2137 frame->prepare = prepare_cede_notself;
2138 frame->check = slf_check_nop;
2139}
2140
2141/*
2142 * these not obviously related functions are all rolled into one
2143 * function to increase chances that they all will call transfer with the same
2144 * stack offset
2145 * SLF stands for "schedule-like-function".
2146 */
2147static OP *
2148pp_slf (pTHX)
2149{
2150 I32 checkmark; /* mark SP to see how many elements check has pushed */
2151
2152 /* set up the slf frame, unless it has already been set-up */
2153 /* the latter happens when a new coro has been started */
2154 /* or when a new cctx was attached to an existing coroutine */
2155 if (expect_true (!slf_frame.prepare))
2156 {
2157 /* first iteration */
2158 dSP;
2159 SV **arg = PL_stack_base + TOPMARK + 1;
2160 int items = SP - arg; /* args without function object */
2161 SV *gv = *sp;
2162
2163 /* do a quick consistency check on the "function" object, and if it isn't */
2164 /* for us, divert to the real entersub */
2165 if (SvTYPE (gv) != SVt_PVGV
2166 || !GvCV (gv)
2167 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2168 return PL_ppaddr[OP_ENTERSUB](aTHX);
2169
2170 if (!(PL_op->op_flags & OPf_STACKED))
2171 {
2172 /* ampersand-form of call, use @_ instead of stack */
2173 AV *av = GvAV (PL_defgv);
2174 arg = AvARRAY (av);
2175 items = AvFILLp (av) + 1;
2176 }
2177
2178 /* now call the init function, which needs to set up slf_frame */
2179 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2180 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2181
2182 /* pop args */
2183 SP = PL_stack_base + POPMARK;
2184
2185 PUTBACK;
2186 }
2187
2188 /* now that we have a slf_frame, interpret it! */
2189 /* we use a callback system not to make the code needlessly */
2190 /* complicated, but so we can run multiple perl coros from one cctx */
2191
2192 do
2193 {
2194 struct coro_transfer_args ta;
2195
2196 slf_frame.prepare (aTHX_ &ta);
2197 TRANSFER (ta, 0);
2198
2199 checkmark = PL_stack_sp - PL_stack_base;
2200 }
2201 while (slf_frame.check (aTHX_ &slf_frame));
2202
2203 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2204
2205 /* exception handling */
2206 if (expect_false (CORO_THROW))
2207 {
2208 SV *exception = sv_2mortal (CORO_THROW);
2209
2210 CORO_THROW = 0;
2211 sv_setsv (ERRSV, exception);
2212 croak (0);
2213 }
2214
2215 /* return value handling - mostly like entersub */
2216 /* make sure we put something on the stack in scalar context */
2217 if (GIMME_V == G_SCALAR)
2218 {
2219 dSP;
2220 SV **bot = PL_stack_base + checkmark;
2221
2222 if (sp == bot) /* too few, push undef */
2223 bot [1] = &PL_sv_undef;
2224 else if (sp != bot + 1) /* too many, take last one */
2225 bot [1] = *sp;
2226
2227 SP = bot + 1;
2228
2229 PUTBACK;
2230 }
2231
2232 return NORMAL;
2233}
2234
2235static void
2236api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2237{
2238 int i;
2239 SV **arg = PL_stack_base + ax;
2240 int items = PL_stack_sp - arg + 1;
2241
2242 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2243
2244 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2245 && PL_op->op_ppaddr != pp_slf)
2246 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2247
2248 CvFLAGS (cv) |= CVf_SLF;
2249 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2250 slf_cv = cv;
2251
2252 /* we patch the op, and then re-run the whole call */
2253 /* we have to put the same argument on the stack for this to work */
2254 /* and this will be done by pp_restore */
2255 slf_restore.op_next = (OP *)&slf_restore;
2256 slf_restore.op_type = OP_CUSTOM;
2257 slf_restore.op_ppaddr = pp_restore;
2258 slf_restore.op_first = PL_op;
2259
2260 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2261
2262 if (PL_op->op_flags & OPf_STACKED)
2263 {
2264 if (items > slf_arga)
2265 {
2266 slf_arga = items;
2267 free (slf_argv);
2268 slf_argv = malloc (slf_arga * sizeof (SV *));
2269 }
2270
2271 slf_argc = items;
2272
2273 for (i = 0; i < items; ++i)
2274 slf_argv [i] = SvREFCNT_inc (arg [i]);
2275 }
2276 else
2277 slf_argc = 0;
2278
2279 PL_op->op_ppaddr = pp_slf;
2280 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2281
2282 PL_op = (OP *)&slf_restore;
2283}
1724 2284
1725/*****************************************************************************/ 2285/*****************************************************************************/
1726/* PerlIO::cede */ 2286/* PerlIO::cede */
1727 2287
1728typedef struct 2288typedef struct
… …
1756 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2316 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1757 double now = nvtime (); 2317 double now = nvtime ();
1758 2318
1759 if (now >= self->next) 2319 if (now >= self->next)
1760 { 2320 {
1761 api_cede (); 2321 api_cede (aTHX);
1762 self->next = now + self->every; 2322 self->next = now + self->every;
1763 } 2323 }
1764 2324
1765 return PerlIOBuf_flush (aTHX_ f); 2325 return PerlIOBuf_flush (aTHX_ f);
1766} 2326}
… …
1795 PerlIOBuf_get_ptr, 2355 PerlIOBuf_get_ptr,
1796 PerlIOBuf_get_cnt, 2356 PerlIOBuf_get_cnt,
1797 PerlIOBuf_set_ptrcnt, 2357 PerlIOBuf_set_ptrcnt,
1798}; 2358};
1799 2359
2360/*****************************************************************************/
2361/* Coro::Semaphore & Coro::Signal */
2362
2363static SV *
2364coro_waitarray_new (pTHX_ int count)
2365{
2366 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2367 AV *av = newAV ();
2368 SV **ary;
2369
2370 /* unfortunately, building manually saves memory */
2371 Newx (ary, 2, SV *);
2372 AvALLOC (av) = ary;
2373#if PERL_VERSION_ATLEAST (5,10,0)
2374 AvARRAY (av) = ary;
2375#else
2376 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2377 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2378 SvPVX ((SV *)av) = (char *)ary;
2379#endif
2380 AvMAX (av) = 1;
2381 AvFILLp (av) = 0;
2382 ary [0] = newSViv (count);
2383
2384 return newRV_noinc ((SV *)av);
2385}
2386
2387/* semaphore */
2388
2389static void
2390coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2391{
2392 SV *count_sv = AvARRAY (av)[0];
2393 IV count = SvIVX (count_sv);
2394
2395 count += adjust;
2396 SvIVX (count_sv) = count;
2397
2398 /* now wake up as many waiters as are expected to lock */
2399 while (count > 0 && AvFILLp (av) > 0)
2400 {
2401 SV *cb;
2402
2403 /* swap first two elements so we can shift a waiter */
2404 AvARRAY (av)[0] = AvARRAY (av)[1];
2405 AvARRAY (av)[1] = count_sv;
2406 cb = av_shift (av);
2407
2408 if (SvOBJECT (cb))
2409 {
2410 api_ready (aTHX_ cb);
2411 --count;
2412 }
2413 else if (SvTYPE (cb) == SVt_PVCV)
2414 {
2415 dSP;
2416 PUSHMARK (SP);
2417 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2418 PUTBACK;
2419 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2420 }
2421
2422 SvREFCNT_dec (cb);
2423 }
2424}
2425
2426static void
2427coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2428{
2429 /* call $sem->adjust (0) to possibly wake up some other waiters */
2430 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2431}
2432
2433static int
2434slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2435{
2436 AV *av = (AV *)frame->data;
2437 SV *count_sv = AvARRAY (av)[0];
2438
2439 /* if we are about to throw, don't actually acquire the lock, just throw */
2440 if (CORO_THROW)
2441 return 0;
2442 else if (SvIVX (count_sv) > 0)
2443 {
2444 SvSTATE_current->on_destroy = 0;
2445
2446 if (acquire)
2447 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2448 else
2449 coro_semaphore_adjust (aTHX_ av, 0);
2450
2451 return 0;
2452 }
2453 else
2454 {
2455 int i;
2456 /* if we were woken up but can't down, we look through the whole */
2457 /* waiters list and only add us if we aren't in there already */
2458 /* this avoids some degenerate memory usage cases */
2459
2460 for (i = 1; i <= AvFILLp (av); ++i)
2461 if (AvARRAY (av)[i] == SvRV (coro_current))
2462 return 1;
2463
2464 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2465 return 1;
2466 }
2467}
2468
2469static int
2470slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2471{
2472 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2473}
2474
2475static int
2476slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2477{
2478 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2479}
2480
2481static void
2482slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2483{
2484 AV *av = (AV *)SvRV (arg [0]);
2485
2486 if (SvIVX (AvARRAY (av)[0]) > 0)
2487 {
2488 frame->data = (void *)av;
2489 frame->prepare = prepare_nop;
2490 }
2491 else
2492 {
2493 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2494
2495 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2496 frame->prepare = prepare_schedule;
2497
2498 /* to avoid race conditions when a woken-up coro gets terminated */
2499 /* we arrange for a temporary on_destroy that calls adjust (0) */
2500 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2501 }
2502}
2503
2504static void
2505slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2506{
2507 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2508 frame->check = slf_check_semaphore_down;
2509}
2510
2511static void
2512slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2513{
2514 if (items >= 2)
2515 {
2516 /* callback form */
2517 AV *av = (AV *)SvRV (arg [0]);
2518 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2519
2520 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2521
2522 if (SvIVX (AvARRAY (av)[0]) > 0)
2523 coro_semaphore_adjust (aTHX_ av, 0);
2524
2525 frame->prepare = prepare_nop;
2526 frame->check = slf_check_nop;
2527 }
2528 else
2529 {
2530 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2531 frame->check = slf_check_semaphore_wait;
2532 }
2533}
2534
2535/* signal */
2536
2537static void
2538coro_signal_wake (pTHX_ AV *av, int count)
2539{
2540 SvIVX (AvARRAY (av)[0]) = 0;
2541
2542 /* now signal count waiters */
2543 while (count > 0 && AvFILLp (av) > 0)
2544 {
2545 SV *cb;
2546
2547 /* swap first two elements so we can shift a waiter */
2548 cb = AvARRAY (av)[0];
2549 AvARRAY (av)[0] = AvARRAY (av)[1];
2550 AvARRAY (av)[1] = cb;
2551
2552 cb = av_shift (av);
2553
2554 api_ready (aTHX_ cb);
2555 sv_setiv (cb, 0); /* signal waiter */
2556 SvREFCNT_dec (cb);
2557
2558 --count;
2559 }
2560}
2561
2562static int
2563slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2564{
2565 /* if we are about to throw, also stop waiting */
2566 return SvROK ((SV *)frame->data) && !CORO_THROW;
2567}
2568
2569static void
2570slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2571{
2572 AV *av = (AV *)SvRV (arg [0]);
2573
2574 if (SvIVX (AvARRAY (av)[0]))
2575 {
2576 SvIVX (AvARRAY (av)[0]) = 0;
2577 frame->prepare = prepare_nop;
2578 frame->check = slf_check_nop;
2579 }
2580 else
2581 {
2582 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2583
2584 av_push (av, waiter);
2585
2586 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2587 frame->prepare = prepare_schedule;
2588 frame->check = slf_check_signal_wait;
2589 }
2590}
2591
2592/*****************************************************************************/
2593/* Coro::AIO */
2594
2595#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2596
2597/* helper storage struct */
2598struct io_state
2599{
2600 int errorno;
2601 I32 laststype; /* U16 in 5.10.0 */
2602 int laststatval;
2603 Stat_t statcache;
2604};
2605
2606static void
2607coro_aio_callback (pTHX_ CV *cv)
2608{
2609 dXSARGS;
2610 AV *state = (AV *)GENSUB_ARG;
2611 SV *coro = av_pop (state);
2612 SV *data_sv = newSV (sizeof (struct io_state));
2613
2614 av_extend (state, items - 1);
2615
2616 sv_upgrade (data_sv, SVt_PV);
2617 SvCUR_set (data_sv, sizeof (struct io_state));
2618 SvPOK_only (data_sv);
2619
2620 {
2621 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2622
2623 data->errorno = errno;
2624 data->laststype = PL_laststype;
2625 data->laststatval = PL_laststatval;
2626 data->statcache = PL_statcache;
2627 }
2628
2629 /* now build the result vector out of all the parameters and the data_sv */
2630 {
2631 int i;
2632
2633 for (i = 0; i < items; ++i)
2634 av_push (state, SvREFCNT_inc_NN (ST (i)));
2635 }
2636
2637 av_push (state, data_sv);
2638
2639 api_ready (aTHX_ coro);
2640 SvREFCNT_dec (coro);
2641 SvREFCNT_dec ((AV *)state);
2642}
2643
2644static int
2645slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2646{
2647 AV *state = (AV *)frame->data;
2648
2649 /* if we are about to throw, return early */
2650 /* this does not cancel the aio request, but at least */
2651 /* it quickly returns */
2652 if (CORO_THROW)
2653 return 0;
2654
2655 /* one element that is an RV? repeat! */
2656 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2657 return 1;
2658
2659 /* restore status */
2660 {
2661 SV *data_sv = av_pop (state);
2662 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2663
2664 errno = data->errorno;
2665 PL_laststype = data->laststype;
2666 PL_laststatval = data->laststatval;
2667 PL_statcache = data->statcache;
2668
2669 SvREFCNT_dec (data_sv);
2670 }
2671
2672 /* push result values */
2673 {
2674 dSP;
2675 int i;
2676
2677 EXTEND (SP, AvFILLp (state) + 1);
2678 for (i = 0; i <= AvFILLp (state); ++i)
2679 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2680
2681 PUTBACK;
2682 }
2683
2684 return 0;
2685}
2686
2687static void
2688slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2689{
2690 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2691 SV *coro_hv = SvRV (coro_current);
2692 struct coro *coro = SvSTATE_hv (coro_hv);
2693
2694 /* put our coroutine id on the state arg */
2695 av_push (state, SvREFCNT_inc_NN (coro_hv));
2696
2697 /* first see whether we have a non-zero priority and set it as AIO prio */
2698 if (coro->prio)
2699 {
2700 dSP;
2701
2702 static SV *prio_cv;
2703 static SV *prio_sv;
2704
2705 if (expect_false (!prio_cv))
2706 {
2707 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2708 prio_sv = newSViv (0);
2709 }
2710
2711 PUSHMARK (SP);
2712 sv_setiv (prio_sv, coro->prio);
2713 XPUSHs (prio_sv);
2714
2715 PUTBACK;
2716 call_sv (prio_cv, G_VOID | G_DISCARD);
2717 }
2718
2719 /* now call the original request */
2720 {
2721 dSP;
2722 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2723 int i;
2724
2725 PUSHMARK (SP);
2726
2727 /* first push all args to the stack */
2728 EXTEND (SP, items + 1);
2729
2730 for (i = 0; i < items; ++i)
2731 PUSHs (arg [i]);
2732
2733 /* now push the callback closure */
2734 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2735
2736 /* now call the AIO function - we assume our request is uncancelable */
2737 PUTBACK;
2738 call_sv ((SV *)req, G_VOID | G_DISCARD);
2739 }
2740
2741 /* now that the requets is going, we loop toll we have a result */
2742 frame->data = (void *)state;
2743 frame->prepare = prepare_schedule;
2744 frame->check = slf_check_aio_req;
2745}
2746
2747static void
2748coro_aio_req_xs (pTHX_ CV *cv)
2749{
2750 dXSARGS;
2751
2752 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2753
2754 XSRETURN_EMPTY;
2755}
2756
2757/*****************************************************************************/
2758
2759#if CORO_CLONE
2760# include "clone.c"
2761#endif
1800 2762
1801MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2763MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1802 2764
1803PROTOTYPES: DISABLE 2765PROTOTYPES: DISABLE
1804 2766
1805BOOT: 2767BOOT:
1806{ 2768{
1807#ifdef USE_ITHREADS 2769#ifdef USE_ITHREADS
1808 MUTEX_INIT (&coro_lock);
1809# if CORO_PTHREAD 2770# if CORO_PTHREAD
1810 coro_thx = PERL_GET_CONTEXT; 2771 coro_thx = PERL_GET_CONTEXT;
1811# endif 2772# endif
1812#endif 2773#endif
1813 BOOT_PAGESIZE; 2774 BOOT_PAGESIZE;
2775
2776 cctx_current = cctx_new_empty ();
1814 2777
1815 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2778 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1816 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2779 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1817 2780
1818 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2781 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1834 main_top_env = PL_top_env; 2797 main_top_env = PL_top_env;
1835 2798
1836 while (main_top_env->je_prev) 2799 while (main_top_env->je_prev)
1837 main_top_env = main_top_env->je_prev; 2800 main_top_env = main_top_env->je_prev;
1838 2801
2802 {
2803 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2804
2805 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2806 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2807
2808 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2809 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2810 }
2811
1839 coroapi.ver = CORO_API_VERSION; 2812 coroapi.ver = CORO_API_VERSION;
1840 coroapi.rev = CORO_API_REVISION; 2813 coroapi.rev = CORO_API_REVISION;
2814
1841 coroapi.transfer = api_transfer; 2815 coroapi.transfer = api_transfer;
2816
2817 coroapi.sv_state = SvSTATE_;
2818 coroapi.execute_slf = api_execute_slf;
2819 coroapi.prepare_nop = prepare_nop;
2820 coroapi.prepare_schedule = prepare_schedule;
2821 coroapi.prepare_cede = prepare_cede;
2822 coroapi.prepare_cede_notself = prepare_cede_notself;
1842 2823
1843 { 2824 {
1844 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2825 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1845 2826
1846 if (!svp) croak ("Time::HiRes is required"); 2827 if (!svp) croak ("Time::HiRes is required");
… …
1852 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2833 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1853} 2834}
1854 2835
1855SV * 2836SV *
1856new (char *klass, ...) 2837new (char *klass, ...)
2838 ALIAS:
2839 Coro::new = 1
1857 CODE: 2840 CODE:
1858{ 2841{
1859 struct coro *coro; 2842 struct coro *coro;
1860 MAGIC *mg; 2843 MAGIC *mg;
1861 HV *hv; 2844 HV *hv;
2845 CV *cb;
1862 int i; 2846 int i;
2847
2848 if (items > 1)
2849 {
2850 cb = coro_sv_2cv (aTHX_ ST (1));
2851
2852 if (!ix)
2853 {
2854 if (CvISXSUB (cb))
2855 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2856
2857 if (!CvROOT (cb))
2858 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2859 }
2860 }
1863 2861
1864 Newz (0, coro, 1, struct coro); 2862 Newz (0, coro, 1, struct coro);
1865 coro->args = newAV (); 2863 coro->args = newAV ();
1866 coro->flags = CF_NEW; 2864 coro->flags = CF_NEW;
1867 2865
… …
1872 coro->hv = hv = newHV (); 2870 coro->hv = hv = newHV ();
1873 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2871 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1874 mg->mg_flags |= MGf_DUP; 2872 mg->mg_flags |= MGf_DUP;
1875 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2873 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1876 2874
2875 if (items > 1)
2876 {
1877 av_extend (coro->args, items - 1); 2877 av_extend (coro->args, items - 1 + ix - 1);
2878
2879 if (ix)
2880 {
2881 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2882 cb = cv_coro_run;
2883 }
2884
2885 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2886
1878 for (i = 1; i < items; i++) 2887 for (i = 2; i < items; i++)
1879 av_push (coro->args, newSVsv (ST (i))); 2888 av_push (coro->args, newSVsv (ST (i)));
2889 }
1880} 2890}
1881 OUTPUT: 2891 OUTPUT:
1882 RETVAL 2892 RETVAL
1883 2893
1884# these not obviously related functions are all rolled into the same xs
1885# function to increase chances that they all will call transfer with the same
1886# stack offset
1887void 2894void
1888_set_stacklevel (...) 2895transfer (...)
1889 ALIAS: 2896 PROTOTYPE: $$
1890 Coro::State::transfer = 1 2897 CODE:
1891 Coro::schedule = 2 2898 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1892 Coro::cede = 3
1893 Coro::cede_notself = 4
1894 CODE:
1895{
1896 struct transfer_args ta;
1897
1898 PUTBACK;
1899 switch (ix)
1900 {
1901 case 0:
1902 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1903 ta.next = 0;
1904 break;
1905
1906 case 1:
1907 if (items != 2)
1908 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1909
1910 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1911 break;
1912
1913 case 2:
1914 prepare_schedule (aTHX_ &ta);
1915 break;
1916
1917 case 3:
1918 prepare_cede (aTHX_ &ta);
1919 break;
1920
1921 case 4:
1922 if (!prepare_cede_notself (aTHX_ &ta))
1923 XSRETURN_EMPTY;
1924
1925 break;
1926 }
1927 SPAGAIN;
1928
1929 BARRIER;
1930 PUTBACK;
1931 TRANSFER (ta, 0);
1932 SPAGAIN; /* might be the sp of a different coroutine now */
1933 /* be extra careful not to ever do anything after TRANSFER */
1934}
1935 2899
1936bool 2900bool
1937_destroy (SV *coro_sv) 2901_destroy (SV *coro_sv)
1938 CODE: 2902 CODE:
1939 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2903 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1944_exit (int code) 2908_exit (int code)
1945 PROTOTYPE: $ 2909 PROTOTYPE: $
1946 CODE: 2910 CODE:
1947 _exit (code); 2911 _exit (code);
1948 2912
2913SV *
2914clone (Coro::State coro)
2915 CODE:
2916{
2917#if CORO_CLONE
2918 struct coro *ncoro = coro_clone (coro);
2919 MAGIC *mg;
2920 /* TODO: too much duplication */
2921 ncoro->hv = newHV ();
2922 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2923 mg->mg_flags |= MGf_DUP;
2924 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2925#else
2926 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2927#endif
2928}
2929 OUTPUT:
2930 RETVAL
2931
1949int 2932int
1950cctx_stacksize (int new_stacksize = 0) 2933cctx_stacksize (int new_stacksize = 0)
2934 PROTOTYPE: ;$
1951 CODE: 2935 CODE:
1952 RETVAL = cctx_stacksize; 2936 RETVAL = cctx_stacksize;
1953 if (new_stacksize) 2937 if (new_stacksize)
1954 { 2938 {
1955 cctx_stacksize = new_stacksize; 2939 cctx_stacksize = new_stacksize;
… …
1958 OUTPUT: 2942 OUTPUT:
1959 RETVAL 2943 RETVAL
1960 2944
1961int 2945int
1962cctx_max_idle (int max_idle = 0) 2946cctx_max_idle (int max_idle = 0)
2947 PROTOTYPE: ;$
1963 CODE: 2948 CODE:
1964 RETVAL = cctx_max_idle; 2949 RETVAL = cctx_max_idle;
1965 if (max_idle > 1) 2950 if (max_idle > 1)
1966 cctx_max_idle = max_idle; 2951 cctx_max_idle = max_idle;
1967 OUTPUT: 2952 OUTPUT:
1968 RETVAL 2953 RETVAL
1969 2954
1970int 2955int
1971cctx_count () 2956cctx_count ()
2957 PROTOTYPE:
1972 CODE: 2958 CODE:
1973 RETVAL = cctx_count; 2959 RETVAL = cctx_count;
1974 OUTPUT: 2960 OUTPUT:
1975 RETVAL 2961 RETVAL
1976 2962
1977int 2963int
1978cctx_idle () 2964cctx_idle ()
2965 PROTOTYPE:
1979 CODE: 2966 CODE:
1980 RETVAL = cctx_idle; 2967 RETVAL = cctx_idle;
1981 OUTPUT: 2968 OUTPUT:
1982 RETVAL 2969 RETVAL
1983 2970
1984void 2971void
1985list () 2972list ()
2973 PROTOTYPE:
1986 PPCODE: 2974 PPCODE:
1987{ 2975{
1988 struct coro *coro; 2976 struct coro *coro;
1989 for (coro = coro_first; coro; coro = coro->next) 2977 for (coro = coro_first; coro; coro = coro->next)
1990 if (coro->hv) 2978 if (coro->hv)
… …
2049 RETVAL = boolSV (coro->flags & ix); 3037 RETVAL = boolSV (coro->flags & ix);
2050 OUTPUT: 3038 OUTPUT:
2051 RETVAL 3039 RETVAL
2052 3040
2053void 3041void
3042throw (Coro::State self, SV *throw = &PL_sv_undef)
3043 PROTOTYPE: $;$
3044 CODE:
3045{
3046 struct coro *current = SvSTATE_current;
3047 SV **throwp = self == current ? &CORO_THROW : &self->except;
3048 SvREFCNT_dec (*throwp);
3049 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3050}
3051
3052void
2054api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3053api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3054 PROTOTYPE: $;$
3055 C_ARGS: aTHX_ coro, flags
2055 3056
2056SV * 3057SV *
2057has_cctx (Coro::State coro) 3058has_cctx (Coro::State coro)
2058 PROTOTYPE: $ 3059 PROTOTYPE: $
2059 CODE: 3060 CODE:
2060 RETVAL = boolSV (!!coro->cctx); 3061 /* maybe manage the running flag differently */
3062 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2061 OUTPUT: 3063 OUTPUT:
2062 RETVAL 3064 RETVAL
2063 3065
2064int 3066int
2065is_traced (Coro::State coro) 3067is_traced (Coro::State coro)
… …
2083 OUTPUT: 3085 OUTPUT:
2084 RETVAL 3086 RETVAL
2085 3087
2086void 3088void
2087force_cctx () 3089force_cctx ()
3090 PROTOTYPE:
2088 CODE: 3091 CODE:
2089 struct coro *coro = SvSTATE (coro_current);
2090 coro->cctx->idle_sp = 0; 3092 cctx_current->idle_sp = 0;
2091 3093
2092void 3094void
2093swap_defsv (Coro::State self) 3095swap_defsv (Coro::State self)
2094 PROTOTYPE: $ 3096 PROTOTYPE: $
2095 ALIAS: 3097 ALIAS:
2096 swap_defav = 1 3098 swap_defav = 1
2097 CODE: 3099 CODE:
2098 if (!self->slot) 3100 if (!self->slot)
2099 croak ("cannot swap state with coroutine that has no saved state"); 3101 croak ("cannot swap state with coroutine that has no saved state,");
2100 else 3102 else
2101 { 3103 {
2102 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3104 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2103 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3105 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2104 3106
2105 SV *tmp = *src; *src = *dst; *dst = tmp; 3107 SV *tmp = *src; *src = *dst; *dst = tmp;
2106 } 3108 }
2107 3109
3110
2108MODULE = Coro::State PACKAGE = Coro 3111MODULE = Coro::State PACKAGE = Coro
2109 3112
2110BOOT: 3113BOOT:
2111{ 3114{
2112 int i; 3115 int i;
2113 3116
2114 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2115 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3117 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2116 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3118 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2117 3119 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3120 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2118 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3121 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2119 SvREADONLY_on (coro_current); 3122 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3123 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3124 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3125 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3126
3127 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3128 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3129 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3130 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2120 3131
2121 coro_stash = gv_stashpv ("Coro", TRUE); 3132 coro_stash = gv_stashpv ("Coro", TRUE);
2122 3133
2123 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3134 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2124 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3135 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2129 3140
2130 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3141 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2131 coro_ready[i] = newAV (); 3142 coro_ready[i] = newAV ();
2132 3143
2133 { 3144 {
2134 SV *sv = perl_get_sv ("Coro::API", TRUE); 3145 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2135 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2136 3146
2137 coroapi.schedule = api_schedule; 3147 coroapi.schedule = api_schedule;
3148 coroapi.schedule_to = api_schedule_to;
2138 coroapi.cede = api_cede; 3149 coroapi.cede = api_cede;
2139 coroapi.cede_notself = api_cede_notself; 3150 coroapi.cede_notself = api_cede_notself;
2140 coroapi.ready = api_ready; 3151 coroapi.ready = api_ready;
2141 coroapi.is_ready = api_is_ready; 3152 coroapi.is_ready = api_is_ready;
2142 coroapi.nready = &coro_nready; 3153 coroapi.nready = coro_nready;
2143 coroapi.current = coro_current; 3154 coroapi.current = coro_current;
2144 3155
2145 GCoroAPI = &coroapi; 3156 /*GCoroAPI = &coroapi;*/
2146 sv_setiv (sv, (IV)&coroapi); 3157 sv_setiv (sv, (IV)&coroapi);
2147 SvREADONLY_on (sv); 3158 SvREADONLY_on (sv);
2148 } 3159 }
2149} 3160}
3161
3162void
3163terminate (...)
3164 CODE:
3165 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3166
3167void
3168schedule (...)
3169 CODE:
3170 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3171
3172void
3173schedule_to (...)
3174 CODE:
3175 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3176
3177void
3178cede_to (...)
3179 CODE:
3180 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3181
3182void
3183cede (...)
3184 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_cede);
3186
3187void
3188cede_notself (...)
3189 CODE:
3190 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3191
3192void
3193_cancel (Coro::State self)
3194 CODE:
3195 coro_state_destroy (aTHX_ self);
3196 coro_call_on_destroy (aTHX_ self);
2150 3197
2151void 3198void
2152_set_current (SV *current) 3199_set_current (SV *current)
2153 PROTOTYPE: $ 3200 PROTOTYPE: $
2154 CODE: 3201 CODE:
… …
2157 3204
2158void 3205void
2159_set_readyhook (SV *hook) 3206_set_readyhook (SV *hook)
2160 PROTOTYPE: $ 3207 PROTOTYPE: $
2161 CODE: 3208 CODE:
2162 LOCK;
2163 SvREFCNT_dec (coro_readyhook); 3209 SvREFCNT_dec (coro_readyhook);
2164 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3210 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2165 UNLOCK;
2166 3211
2167int 3212int
2168prio (Coro::State coro, int newprio = 0) 3213prio (Coro::State coro, int newprio = 0)
3214 PROTOTYPE: $;$
2169 ALIAS: 3215 ALIAS:
2170 nice = 1 3216 nice = 1
2171 CODE: 3217 CODE:
2172{ 3218{
2173 RETVAL = coro->prio; 3219 RETVAL = coro->prio;
… …
2188 3234
2189SV * 3235SV *
2190ready (SV *self) 3236ready (SV *self)
2191 PROTOTYPE: $ 3237 PROTOTYPE: $
2192 CODE: 3238 CODE:
2193 RETVAL = boolSV (api_ready (self)); 3239 RETVAL = boolSV (api_ready (aTHX_ self));
2194 OUTPUT: 3240 OUTPUT:
2195 RETVAL 3241 RETVAL
2196 3242
2197int 3243int
2198nready (...) 3244nready (...)
… …
2201 RETVAL = coro_nready; 3247 RETVAL = coro_nready;
2202 OUTPUT: 3248 OUTPUT:
2203 RETVAL 3249 RETVAL
2204 3250
2205void 3251void
2206throw (Coro::State self, SV *throw = &PL_sv_undef) 3252_pool_handler (...)
2207 PROTOTYPE: $;$ 3253 CODE:
2208 CODE: 3254 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2209 SvREFCNT_dec (self->throw);
2210 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2211 3255
2212# for async_pool speedup
2213void 3256void
2214_pool_1 (SV *cb) 3257async_pool (SV *cv, ...)
3258 PROTOTYPE: &@
3259 PPCODE:
3260{
3261 HV *hv = (HV *)av_pop (av_async_pool);
3262 AV *av = newAV ();
3263 SV *cb = ST (0);
3264 int i;
3265
3266 av_extend (av, items - 2);
3267 for (i = 1; i < items; ++i)
3268 av_push (av, SvREFCNT_inc_NN (ST (i)));
3269
3270 if ((SV *)hv == &PL_sv_undef)
3271 {
3272 PUSHMARK (SP);
3273 EXTEND (SP, 2);
3274 PUSHs (sv_Coro);
3275 PUSHs ((SV *)cv_pool_handler);
3276 PUTBACK;
3277 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3278 SPAGAIN;
3279
3280 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3281 }
3282
3283 {
3284 struct coro *coro = SvSTATE_hv (hv);
3285
3286 assert (!coro->invoke_cb);
3287 assert (!coro->invoke_av);
3288 coro->invoke_cb = SvREFCNT_inc (cb);
3289 coro->invoke_av = av;
3290 }
3291
3292 api_ready (aTHX_ (SV *)hv);
3293
3294 if (GIMME_V != G_VOID)
3295 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3296 else
3297 SvREFCNT_dec (hv);
3298}
3299
3300SV *
3301rouse_cb ()
3302 PROTOTYPE:
2215 CODE: 3303 CODE:
2216{ 3304 RETVAL = coro_new_rouse_cb (aTHX);
2217 struct coro *coro = SvSTATE (coro_current);
2218 HV *hv = (HV *)SvRV (coro_current);
2219 AV *defav = GvAV (PL_defgv);
2220 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2221 AV *invoke_av;
2222 int i, len;
2223
2224 if (!invoke)
2225 {
2226 SV *old = PL_diehook;
2227 PL_diehook = 0;
2228 SvREFCNT_dec (old);
2229 croak ("\3async_pool terminate\2\n");
2230 }
2231
2232 SvREFCNT_dec (coro->saved_deffh);
2233 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2234
2235 hv_store (hv, "desc", sizeof ("desc") - 1,
2236 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2237
2238 invoke_av = (AV *)SvRV (invoke);
2239 len = av_len (invoke_av);
2240
2241 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2242
2243 if (len > 0)
2244 {
2245 av_fill (defav, len - 1);
2246 for (i = 0; i < len; ++i)
2247 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2248 }
2249
2250 SvREFCNT_dec (invoke);
2251}
2252
2253void
2254_pool_2 (SV *cb)
2255 CODE:
2256{
2257 struct coro *coro = SvSTATE (coro_current);
2258
2259 sv_setsv (cb, &PL_sv_undef);
2260
2261 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2262 coro->saved_deffh = 0;
2263
2264 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2265 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2266 {
2267 SV *old = PL_diehook;
2268 PL_diehook = 0;
2269 SvREFCNT_dec (old);
2270 croak ("\3async_pool terminate\2\n");
2271 }
2272
2273 av_clear (GvAV (PL_defgv));
2274 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2275 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2276
2277 coro->prio = 0;
2278
2279 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2280 api_trace (coro_current, 0);
2281
2282 av_push (av_async_pool, newSVsv (coro_current));
2283}
2284
2285#if 0
2286
2287void
2288_generator_call (...)
2289 PROTOTYPE: @
2290 PPCODE:
2291 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2292 xxxx
2293 abort ();
2294
2295SV *
2296gensub (SV *sub, ...)
2297 PROTOTYPE: &;@
2298 CODE:
2299{
2300 struct coro *coro;
2301 MAGIC *mg;
2302 CV *xcv;
2303 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2304 int i;
2305
2306 CvGV (ncv) = CvGV (cv);
2307 CvFILE (ncv) = CvFILE (cv);
2308
2309 Newz (0, coro, 1, struct coro);
2310 coro->args = newAV ();
2311 coro->flags = CF_NEW;
2312
2313 av_extend (coro->args, items - 1);
2314 for (i = 1; i < items; i++)
2315 av_push (coro->args, newSVsv (ST (i)));
2316
2317 CvISXSUB_on (ncv);
2318 CvXSUBANY (ncv).any_ptr = (void *)coro;
2319
2320 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2321
2322 CvXSUB (ncv) = CvXSUB (xcv);
2323 CvANON_on (ncv);
2324
2325 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2326 RETVAL = newRV_noinc ((SV *)ncv);
2327}
2328 OUTPUT: 3305 OUTPUT:
2329 RETVAL 3306 RETVAL
2330 3307
2331#endif
2332
2333
2334MODULE = Coro::State PACKAGE = Coro::AIO
2335
2336void 3308void
2337_get_state (SV *self) 3309rouse_wait (...)
3310 PROTOTYPE: ;$
2338 PPCODE: 3311 PPCODE:
2339{ 3312 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2340 AV *defav = GvAV (PL_defgv);
2341 AV *av = newAV ();
2342 int i;
2343 SV *data_sv = newSV (sizeof (struct io_state));
2344 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2345 SvCUR_set (data_sv, sizeof (struct io_state));
2346 SvPOK_only (data_sv);
2347 3313
2348 data->errorno = errno;
2349 data->laststype = PL_laststype;
2350 data->laststatval = PL_laststatval;
2351 data->statcache = PL_statcache;
2352 3314
2353 av_extend (av, AvFILLp (defav) + 1 + 1); 3315MODULE = Coro::State PACKAGE = PerlIO::cede
2354 3316
2355 for (i = 0; i <= AvFILLp (defav); ++i) 3317BOOT:
2356 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3318 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2357 3319
2358 av_push (av, data_sv);
2359 3320
2360 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3321MODULE = Coro::State PACKAGE = Coro::Semaphore
2361 3322
2362 api_ready (self); 3323SV *
2363} 3324new (SV *klass, SV *count = 0)
3325 CODE:
3326 RETVAL = sv_bless (
3327 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3328 GvSTASH (CvGV (cv))
3329 );
3330 OUTPUT:
3331 RETVAL
3332
3333# helper for Coro::Channel
3334SV *
3335_alloc (int count)
3336 CODE:
3337 RETVAL = coro_waitarray_new (aTHX_ count);
3338 OUTPUT:
3339 RETVAL
3340
3341SV *
3342count (SV *self)
3343 CODE:
3344 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3345 OUTPUT:
3346 RETVAL
2364 3347
2365void 3348void
2366_set_state (SV *state) 3349up (SV *self, int adjust = 1)
2367 PROTOTYPE: $ 3350 ALIAS:
3351 adjust = 1
3352 CODE:
3353 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3354
3355void
3356down (...)
3357 CODE:
3358 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3359
3360void
3361wait (...)
3362 CODE:
3363 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3364
3365void
3366try (SV *self)
3367 PPCODE:
3368{
3369 AV *av = (AV *)SvRV (self);
3370 SV *count_sv = AvARRAY (av)[0];
3371 IV count = SvIVX (count_sv);
3372
3373 if (count > 0)
3374 {
3375 --count;
3376 SvIVX (count_sv) = count;
3377 XSRETURN_YES;
3378 }
3379 else
3380 XSRETURN_NO;
3381}
3382
3383void
3384waiters (SV *self)
3385 PPCODE:
3386{
3387 AV *av = (AV *)SvRV (self);
3388 int wcount = AvFILLp (av) + 1 - 1;
3389
3390 if (GIMME_V == G_SCALAR)
3391 XPUSHs (sv_2mortal (newSViv (wcount)));
3392 else
3393 {
3394 int i;
3395 EXTEND (SP, wcount);
3396 for (i = 1; i <= wcount; ++i)
3397 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3398 }
3399}
3400
3401MODULE = Coro::State PACKAGE = Coro::Signal
3402
3403SV *
3404new (SV *klass)
2368 PPCODE: 3405 CODE:
3406 RETVAL = sv_bless (
3407 coro_waitarray_new (aTHX_ 0),
3408 GvSTASH (CvGV (cv))
3409 );
3410 OUTPUT:
3411 RETVAL
3412
3413void
3414wait (...)
3415 CODE:
3416 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3417
3418void
3419broadcast (SV *self)
3420 CODE:
2369{ 3421{
2370 AV *av = (AV *)SvRV (state); 3422 AV *av = (AV *)SvRV (self);
2371 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3423 coro_signal_wake (aTHX_ av, AvFILLp (av));
2372 int i; 3424}
2373 3425
2374 errno = data->errorno; 3426void
2375 PL_laststype = data->laststype; 3427send (SV *self)
2376 PL_laststatval = data->laststatval; 3428 CODE:
2377 PL_statcache = data->statcache; 3429{
3430 AV *av = (AV *)SvRV (self);
2378 3431
2379 EXTEND (SP, AvFILLp (av)); 3432 if (AvFILLp (av))
2380 for (i = 0; i < AvFILLp (av); ++i) 3433 coro_signal_wake (aTHX_ av, 1);
2381 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3434 else
3435 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2382} 3436}
3437
3438IV
3439awaited (SV *self)
3440 CODE:
3441 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3442 OUTPUT:
3443 RETVAL
2383 3444
2384 3445
2385MODULE = Coro::State PACKAGE = Coro::AnyEvent 3446MODULE = Coro::State PACKAGE = Coro::AnyEvent
2386 3447
2387BOOT: 3448BOOT:
2388 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3449 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2389 3450
2390SV * 3451void
2391_schedule (...) 3452_schedule (...)
2392 PROTOTYPE: @
2393 CODE: 3453 CODE:
2394{ 3454{
2395 static int incede; 3455 static int incede;
2396 3456
2397 api_cede_notself (); 3457 api_cede_notself (aTHX);
2398 3458
2399 ++incede; 3459 ++incede;
2400 while (coro_nready >= incede && api_cede ()) 3460 while (coro_nready >= incede && api_cede (aTHX))
2401 ; 3461 ;
2402 3462
2403 sv_setsv (sv_activity, &PL_sv_undef); 3463 sv_setsv (sv_activity, &PL_sv_undef);
2404 if (coro_nready >= incede) 3464 if (coro_nready >= incede)
2405 { 3465 {
2406 PUSHMARK (SP); 3466 PUSHMARK (SP);
2407 PUTBACK; 3467 PUTBACK;
2408 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3468 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2409 SPAGAIN;
2410 } 3469 }
2411 3470
2412 --incede; 3471 --incede;
2413} 3472}
2414 3473
2415 3474
2416MODULE = Coro::State PACKAGE = PerlIO::cede 3475MODULE = Coro::State PACKAGE = Coro::AIO
2417 3476
2418BOOT: 3477void
2419 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3478_register (char *target, char *proto, SV *req)
3479 CODE:
3480{
3481 CV *req_cv = coro_sv_2cv (aTHX_ req);
3482 /* newXSproto doesn't return the CV on 5.8 */
3483 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3484 sv_setpv ((SV *)slf_cv, proto);
3485 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3486}
3487

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