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Comparing Coro/Coro/State.xs (file contents):
Revision 1.148 by root, Fri Apr 13 12:56:55 2007 UTC vs.
Revision 1.209 by root, Wed Oct 10 02:58:17 2007 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
8 9
9#include "patchlevel.h" 10#include "patchlevel.h"
10 11
11#include <stdio.h> 12#include <stdio.h>
12#include <errno.h> 13#include <errno.h>
13#include <assert.h> 14#include <assert.h>
15#include <inttypes.h> /* portable stdint.h */
14 16
15#ifdef HAVE_MMAP 17#ifdef HAVE_MMAP
16# include <unistd.h> 18# include <unistd.h>
17# include <sys/mman.h> 19# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 20# ifndef MAP_ANONYMOUS
… …
75/* 5.8.7 */ 77/* 5.8.7 */
76#ifndef SvRV_set 78#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 79# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 80#endif
79 81
82/* 5.8.8 */
83#ifndef GV_NOTQUAL
84# define GV_NOTQUAL 0
85#endif
86#ifndef newSV
87# define newSV(l) NEWSV(0,l)
88#endif
89
80#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 90#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
81# undef CORO_STACKGUARD 91# undef CORO_STACKGUARD
82#endif 92#endif
83 93
84#ifndef CORO_STACKGUARD 94#ifndef CORO_STACKGUARD
… …
88/* prefer perl internal functions over our own? */ 98/* prefer perl internal functions over our own? */
89#ifndef CORO_PREFER_PERL_FUNCTIONS 99#ifndef CORO_PREFER_PERL_FUNCTIONS
90# define CORO_PREFER_PERL_FUNCTIONS 0 100# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 101#endif
92 102
93/* The next macro should declare a variable stacklevel that contains and approximation 103/* The next macros try to return the current stack pointer, in an as
94 * to the current C stack pointer. Its property is that it changes with each call 104 * portable way as possible. */
95 * and should be unique. */
96#define dSTACKLEVEL int stacklevel 105#define dSTACKLEVEL volatile char stacklevel
97#define STACKLEVEL ((void *)&stacklevel) 106#define STACKLEVEL ((void *)&stacklevel)
98 107
99#define IN_DESTRUCT (PL_main_cv == Nullcv) 108#define IN_DESTRUCT (PL_main_cv == Nullcv)
100 109
101#if __GNUC__ >= 3 110#if __GNUC__ >= 3
102# define attribute(x) __attribute__(x) 111# define attribute(x) __attribute__(x)
103# define BARRIER __asm__ __volatile__ ("" : : : "memory") 112# define BARRIER __asm__ __volatile__ ("" : : : "memory")
113# define expect(expr,value) __builtin_expect ((expr),(value))
104#else 114#else
105# define attribute(x) 115# define attribute(x)
106# define BARRIER 116# define BARRIER
117# define expect(expr,value) (expr)
107#endif 118#endif
119
120#define expect_false(expr) expect ((expr) != 0, 0)
121#define expect_true(expr) expect ((expr) != 0, 1)
108 122
109#define NOINLINE attribute ((noinline)) 123#define NOINLINE attribute ((noinline))
110 124
111#include "CoroAPI.h" 125#include "CoroAPI.h"
112 126
… …
117#else 131#else
118# define LOCK (void)0 132# define LOCK (void)0
119# define UNLOCK (void)0 133# define UNLOCK (void)0
120#endif 134#endif
121 135
136#define strpair(const) const, sizeof (const) - 1
137
122/* helper storage struct for Coro::AIO */ 138/* helper storage struct for Coro::AIO */
123struct io_state 139struct io_state
124{ 140{
125 int errorno; 141 int errorno;
126 I32 laststype; 142 I32 laststype;
… …
133static AV *main_mainstack; /* used to differentiate between $main and others */ 149static AV *main_mainstack; /* used to differentiate between $main and others */
134static JMPENV *main_top_env; 150static JMPENV *main_top_env;
135static HV *coro_state_stash, *coro_stash; 151static HV *coro_state_stash, *coro_stash;
136static SV *coro_mortal; /* will be freed after next transfer */ 152static SV *coro_mortal; /* will be freed after next transfer */
137 153
138static struct coro_cctx *cctx_first; 154static GV *irsgv; /* $/ */
155static GV *stdoutgv; /* *STDOUT */
156
157static HV *hv_sig; /* %SIG */
158static SV *sv_diehook;
159static SV *sv_warnhook;
160
161/* async_pool helper stuff */
162static SV *sv_pool_rss;
163static SV *sv_pool_size;
164static AV *av_async_pool;
165
166static struct coro_cctx *cctx_first[3]; /* index by GIMME_V type, void, scalar, array */
139static int cctx_count, cctx_idle; 167static int cctx_count, cctx_idle[3];
168
169enum {
170 CC_MAPPED = 0x01,
171 CC_NOREUSE = 0x02, /* throw this away after tracing */
172 CC_TRACE = 0x04,
173 CC_TRACE_SUB = 0x08, /* trace sub calls */
174 CC_TRACE_LINE = 0x10, /* trace each statement */
175 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
176};
140 177
141/* this is a structure representing a c-level coroutine */ 178/* this is a structure representing a c-level coroutine */
142typedef struct coro_cctx { 179typedef struct coro_cctx {
143 struct coro_cctx *next; 180 struct coro_cctx *next;
144 181
… …
153 coro_context cctx; 190 coro_context cctx;
154 191
155#if CORO_USE_VALGRIND 192#if CORO_USE_VALGRIND
156 int valgrind_id; 193 int valgrind_id;
157#endif 194#endif
158 char inuse, mapped; 195 unsigned char flags;
159} coro_cctx; 196} coro_cctx;
160 197
161enum { 198enum {
162 CF_RUNNING = 0x0001, /* coroutine is running */ 199 CF_RUNNING = 0x0001, /* coroutine is running */
163 CF_READY = 0x0002, /* coroutine is ready */ 200 CF_READY = 0x0002, /* coroutine is ready */
164 CF_NEW = 0x0004, /* has never been switched to */ 201 CF_NEW = 0x0004, /* has never been switched to */
165 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 202 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166}; 203};
167 204
205/* the structure where most of the perl state is stored, overlaid on the cxstack */
206typedef struct {
207 SV *defsv;
208 AV *defav;
209 SV *errsv;
210 SV *irsgv;
211#define VAR(name,type) type name;
212# include "state.h"
213#undef VAR
214} perl_slots;
215
216#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
217
168/* this is a structure representing a perl-level coroutine */ 218/* this is a structure representing a perl-level coroutine */
169struct coro { 219struct coro {
170 /* the c coroutine allocated to this perl coroutine, if any */ 220 /* the c coroutine allocated to this perl coroutine, if any */
171 coro_cctx *cctx; 221 coro_cctx *cctx;
222 int gimme;
172 223
224 /* process data */
225 AV *mainstack;
226 perl_slots *slot; /* basically the saved sp */
227
173 /* data associated with this coroutine (initial args) */ 228 AV *args; /* data associated with this coroutine (initial args) */
174 AV *args; 229 int refcnt; /* coroutines are refcounted, yes */
175 int refcnt;
176 int save; /* CORO_SAVE flags */
177 int flags; /* CF_ flags */ 230 int flags; /* CF_ flags */
231 HV *hv; /* the perl hash associated with this coro, if any */
178 232
179 /* optionally saved, might be zero */ 233 /* statistics */
180 AV *defav; /* @_ */ 234 int usecount; /* number of transfers to this coro */
181 SV *defsv; /* $_ */
182 SV *errsv; /* $@ */
183 GV *deffh; /* default filehandle */
184 SV *irssv; /* $/ */
185 SV *irssv_sv; /* real $/ cache */
186
187#define VAR(name,type) type name;
188# include "state.h"
189#undef VAR
190 235
191 /* coro process data */ 236 /* coro process data */
192 int prio; 237 int prio;
238 SV *throw; /* exception to be thrown */
239
240 /* async_pool */
241 SV *saved_deffh;
242
243 /* linked list */
244 struct coro *next, *prev;
193}; 245};
194 246
195typedef struct coro *Coro__State; 247typedef struct coro *Coro__State;
196typedef struct coro *Coro__State_or_hashref; 248typedef struct coro *Coro__State_or_hashref;
197 249
… …
206 258
207/* for Coro.pm */ 259/* for Coro.pm */
208static SV *coro_current; 260static SV *coro_current;
209static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 261static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
210static int coro_nready; 262static int coro_nready;
263static struct coro *coro_first;
211 264
212/** lowlevel stuff **********************************************************/ 265/** lowlevel stuff **********************************************************/
266
267static SV *
268coro_get_sv (const char *name, int create)
269{
270#if PERL_VERSION_ATLEAST (5,9,0)
271 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
272 get_sv (name, create);
273#endif
274 return get_sv (name, create);
275}
276
277static AV *
278coro_get_av (const char *name, int create)
279{
280#if PERL_VERSION_ATLEAST (5,9,0)
281 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
282 get_av (name, create);
283#endif
284 return get_av (name, create);
285}
286
287static HV *
288coro_get_hv (const char *name, int create)
289{
290#if PERL_VERSION_ATLEAST (5,9,0)
291 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
292 get_hv (name, create);
293#endif
294 return get_hv (name, create);
295}
213 296
214static AV * 297static AV *
215coro_clone_padlist (pTHX_ CV *cv) 298coro_clone_padlist (pTHX_ CV *cv)
216{ 299{
217 AV *padlist = CvPADLIST (cv); 300 AV *padlist = CvPADLIST (cv);
… …
281 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 364 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
282 ? SvMAGIC (cv) \ 365 ? SvMAGIC (cv) \
283 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 366 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
284 : 0 367 : 0
285 368
369static struct coro *
370SvSTATE_ (pTHX_ SV *coro)
371{
372 HV *stash;
373 MAGIC *mg;
374
375 if (SvROK (coro))
376 coro = SvRV (coro);
377
378 if (expect_false (SvTYPE (coro) != SVt_PVHV))
379 croak ("Coro::State object required");
380
381 stash = SvSTASH (coro);
382 if (expect_false (stash != coro_stash && stash != coro_state_stash))
383 {
384 /* very slow, but rare, check */
385 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
386 croak ("Coro::State object required");
387 }
388
389 mg = CORO_MAGIC (coro);
390 return (struct coro *)mg->mg_ptr;
391}
392
393#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
394
286/* the next two functions merely cache the padlists */ 395/* the next two functions merely cache the padlists */
287static void 396static void
288get_padlist (pTHX_ CV *cv) 397get_padlist (pTHX_ CV *cv)
289{ 398{
290 MAGIC *mg = CORO_MAGIC (cv); 399 MAGIC *mg = CORO_MAGIC (cv);
291 AV *av; 400 AV *av;
292 401
293 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 402 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
294 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 403 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
295 else 404 else
296 { 405 {
297#if CORO_PREFER_PERL_FUNCTIONS 406#if CORO_PREFER_PERL_FUNCTIONS
298 /* this is probably cleaner, but also slower? */ 407 /* this is probably cleaner, but also slower? */
… …
310put_padlist (pTHX_ CV *cv) 419put_padlist (pTHX_ CV *cv)
311{ 420{
312 MAGIC *mg = CORO_MAGIC (cv); 421 MAGIC *mg = CORO_MAGIC (cv);
313 AV *av; 422 AV *av;
314 423
315 if (!mg) 424 if (expect_false (!mg))
316 { 425 {
317 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); 426 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
318 mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 427 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
319 mg->mg_virtual = &vtbl_coro; 428 mg->mg_virtual = &vtbl_coro;
320 mg->mg_obj = (SV *)newAV (); 429 mg->mg_obj = (SV *)newAV ();
321 } 430 }
322 431
323 av = (AV *)mg->mg_obj; 432 av = (AV *)mg->mg_obj;
324 433
325 if (AvFILLp (av) >= AvMAX (av)) 434 if (expect_false (AvFILLp (av) >= AvMAX (av)))
326 av_extend (av, AvMAX (av) + 1); 435 av_extend (av, AvMAX (av) + 1);
327 436
328 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 437 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
329} 438}
330 439
331/** load & save, init *******************************************************/ 440/** load & save, init *******************************************************/
332
333#define SB do {
334#define SE } while (0)
335
336#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
337 441
338static void 442static void
339load_perl (pTHX_ Coro__State c) 443load_perl (pTHX_ Coro__State c)
340{ 444{
445 perl_slots *slot = c->slot;
446 c->slot = 0;
447
448 PL_mainstack = c->mainstack;
449
450 GvSV (PL_defgv) = slot->defsv;
451 GvAV (PL_defgv) = slot->defav;
452 GvSV (PL_errgv) = slot->errsv;
453 GvSV (irsgv) = slot->irsgv;
454
341#define VAR(name,type) PL_ ## name = c->name; 455 #define VAR(name,type) PL_ ## name = slot->name;
342# include "state.h" 456 # include "state.h"
343#undef VAR 457 #undef VAR
344 458
345 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 459 /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
346 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 460 /*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
347 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
348 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
349
350 if (c->irssv)
351 {
352 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
353 {
354 SvREFCNT_dec (c->irssv);
355 c->irssv = 0;
356 }
357 else
358 {
359 REPLACE_SV (PL_rs, c->irssv);
360 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
361 sv_setsv (c->irssv_sv, PL_rs);
362 }
363 }
364 461
365 { 462 {
366 dSP; 463 dSP;
464
367 CV *cv; 465 CV *cv;
368 466
369 /* now do the ugly restore mess */ 467 /* now do the ugly restore mess */
370 while ((cv = (CV *)POPs)) 468 while (expect_true (cv = (CV *)POPs))
371 { 469 {
372 put_padlist (aTHX_ cv); /* mark this padlist as available */ 470 put_padlist (aTHX_ cv); /* mark this padlist as available */
373 CvDEPTH (cv) = PTR2IV (POPs); 471 CvDEPTH (cv) = PTR2IV (POPs);
374 CvPADLIST (cv) = (AV *)POPs; 472 CvPADLIST (cv) = (AV *)POPs;
375 } 473 }
376 474
377 PUTBACK; 475 PUTBACK;
378 } 476 }
379 assert (!PL_comppad || AvARRAY (PL_comppad));//D
380} 477}
381 478
382static void 479static void
383save_perl (pTHX_ Coro__State c) 480save_perl (pTHX_ Coro__State c)
384{ 481{
385 assert (!PL_comppad || AvARRAY (PL_comppad));//D
386 { 482 {
387 dSP; 483 dSP;
388 I32 cxix = cxstack_ix; 484 I32 cxix = cxstack_ix;
389 PERL_CONTEXT *ccstk = cxstack; 485 PERL_CONTEXT *ccstk = cxstack;
390 PERL_SI *top_si = PL_curstackinfo; 486 PERL_SI *top_si = PL_curstackinfo;
… …
392 /* 488 /*
393 * the worst thing you can imagine happens first - we have to save 489 * the worst thing you can imagine happens first - we have to save
394 * (and reinitialize) all cv's in the whole callchain :( 490 * (and reinitialize) all cv's in the whole callchain :(
395 */ 491 */
396 492
397 EXTEND (SP, 3 + 1);
398 PUSHs (Nullsv); 493 XPUSHs (Nullsv);
399 /* this loop was inspired by pp_caller */ 494 /* this loop was inspired by pp_caller */
400 for (;;) 495 for (;;)
401 { 496 {
402 while (cxix >= 0) 497 while (expect_true (cxix >= 0))
403 { 498 {
404 PERL_CONTEXT *cx = &ccstk[cxix--]; 499 PERL_CONTEXT *cx = &ccstk[cxix--];
405 500
406 if (CxTYPE (cx) == CXt_SUB) 501 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
407 { 502 {
408 CV *cv = cx->blk_sub.cv; 503 CV *cv = cx->blk_sub.cv;
409 504
410 if (CvDEPTH (cv)) 505 if (expect_true (CvDEPTH (cv)))
411 { 506 {
412 EXTEND (SP, 3); 507 EXTEND (SP, 3);
413 PUSHs ((SV *)CvPADLIST (cv)); 508 PUSHs ((SV *)CvPADLIST (cv));
414 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 509 PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
415 PUSHs ((SV *)cv); 510 PUSHs ((SV *)cv);
… …
418 get_padlist (aTHX_ cv); 513 get_padlist (aTHX_ cv);
419 } 514 }
420 } 515 }
421 } 516 }
422 517
423 if (top_si->si_type == PERLSI_MAIN) 518 if (expect_true (top_si->si_type == PERLSI_MAIN))
424 break; 519 break;
425 520
426 top_si = top_si->si_prev; 521 top_si = top_si->si_prev;
427 ccstk = top_si->si_cxstack; 522 ccstk = top_si->si_cxstack;
428 cxix = top_si->si_cxix; 523 cxix = top_si->si_cxix;
429 } 524 }
430 525
431 PUTBACK; 526 PUTBACK;
432 } 527 }
433 528
434 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 529 /* allocate some space on the context stack for our purposes */
435 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 530 /* we manually unroll here, as usually 2 slots is enough */
436 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 531 if (SLOT_COUNT >= 1) CXINC;
437 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 532 if (SLOT_COUNT >= 2) CXINC;
438 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 533 if (SLOT_COUNT >= 3) CXINC;
534 {
535 int i;
536 for (i = 3; i < SLOT_COUNT; ++i)
537 CXINC;
538 }
539 cxstack_ix -= SLOT_COUNT; /* undo allocation */
439 540
541 c->mainstack = PL_mainstack;
542
543 {
544 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
545
546 slot->defav = GvAV (PL_defgv);
547 slot->defsv = DEFSV;
548 slot->errsv = ERRSV;
549 slot->irsgv = GvSV (irsgv);
550
440#define VAR(name,type)c->name = PL_ ## name; 551 #define VAR(name,type) slot->name = PL_ ## name;
441# include "state.h" 552 # include "state.h"
442#undef VAR 553 #undef VAR
554 }
443} 555}
444 556
445/* 557/*
446 * allocate various perl stacks. This is an exact copy 558 * allocate various perl stacks. This is an exact copy
447 * of perl.c:init_stacks, except that it uses less memory 559 * of perl.c:init_stacks, except that it uses less memory
… …
452# define coro_init_stacks init_stacks 564# define coro_init_stacks init_stacks
453#else 565#else
454static void 566static void
455coro_init_stacks (pTHX) 567coro_init_stacks (pTHX)
456{ 568{
457 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 569 PL_curstackinfo = new_stackinfo(32, 8);
458 PL_curstackinfo->si_type = PERLSI_MAIN; 570 PL_curstackinfo->si_type = PERLSI_MAIN;
459 PL_curstack = PL_curstackinfo->si_stack; 571 PL_curstack = PL_curstackinfo->si_stack;
460 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 572 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
461 573
462 PL_stack_base = AvARRAY(PL_curstack); 574 PL_stack_base = AvARRAY(PL_curstack);
463 PL_stack_sp = PL_stack_base; 575 PL_stack_sp = PL_stack_base;
464 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 576 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
465 577
466 New(50,PL_tmps_stack,128,SV*); 578 New(50,PL_tmps_stack,32,SV*);
467 PL_tmps_floor = -1; 579 PL_tmps_floor = -1;
468 PL_tmps_ix = -1; 580 PL_tmps_ix = -1;
469 PL_tmps_max = 128; 581 PL_tmps_max = 32;
470 582
471 New(54,PL_markstack,32,I32); 583 New(54,PL_markstack,16,I32);
472 PL_markstack_ptr = PL_markstack; 584 PL_markstack_ptr = PL_markstack;
473 PL_markstack_max = PL_markstack + 32; 585 PL_markstack_max = PL_markstack + 16;
474 586
475#ifdef SET_MARK_OFFSET 587#ifdef SET_MARK_OFFSET
476 SET_MARK_OFFSET; 588 SET_MARK_OFFSET;
477#endif 589#endif
478 590
479 New(54,PL_scopestack,32,I32); 591 New(54,PL_scopestack,8,I32);
480 PL_scopestack_ix = 0; 592 PL_scopestack_ix = 0;
481 PL_scopestack_max = 32; 593 PL_scopestack_max = 8;
482 594
483 New(54,PL_savestack,64,ANY); 595 New(54,PL_savestack,24,ANY);
484 PL_savestack_ix = 0; 596 PL_savestack_ix = 0;
485 PL_savestack_max = 64; 597 PL_savestack_max = 24;
486 598
487#if !PERL_VERSION_ATLEAST (5,9,0) 599#if !PERL_VERSION_ATLEAST (5,9,0)
488 New(54,PL_retstack,16,OP*); 600 New(54,PL_retstack,4,OP*);
489 PL_retstack_ix = 0; 601 PL_retstack_ix = 0;
490 PL_retstack_max = 16; 602 PL_retstack_max = 4;
491#endif 603#endif
492} 604}
493#endif 605#endif
494 606
495/* 607/*
496 * destroy the stacks, the callchain etc... 608 * destroy the stacks, the callchain etc...
497 */ 609 */
498static void 610static void
499coro_destroy_stacks (pTHX) 611coro_destroy_stacks (pTHX)
500{ 612{
501 if (!IN_DESTRUCT)
502 {
503 /* restore all saved variables and stuff */
504 LEAVE_SCOPE (0);
505 assert (PL_tmps_floor == -1);
506
507 /* free all temporaries */
508 FREETMPS;
509 assert (PL_tmps_ix == -1);
510
511 /* unwind all extra stacks */
512 POPSTACK_TO (PL_mainstack);
513
514 /* unwind main stack */
515 dounwind (-1);
516 }
517
518 while (PL_curstackinfo->si_next) 613 while (PL_curstackinfo->si_next)
519 PL_curstackinfo = PL_curstackinfo->si_next; 614 PL_curstackinfo = PL_curstackinfo->si_next;
520 615
521 while (PL_curstackinfo) 616 while (PL_curstackinfo)
522 { 617 {
… …
537#if !PERL_VERSION_ATLEAST (5,9,0) 632#if !PERL_VERSION_ATLEAST (5,9,0)
538 Safefree (PL_retstack); 633 Safefree (PL_retstack);
539#endif 634#endif
540} 635}
541 636
637static size_t
638coro_rss (pTHX_ struct coro *coro)
639{
640 size_t rss = sizeof (*coro);
641
642 if (coro->mainstack)
643 {
644 perl_slots tmp_slot;
645 perl_slots *slot;
646
647 if (coro->flags & CF_RUNNING)
648 {
649 slot = &tmp_slot;
650
651 #define VAR(name,type) slot->name = PL_ ## name;
652 # include "state.h"
653 #undef VAR
654 }
655 else
656 slot = coro->slot;
657
658 rss += sizeof (slot->curstackinfo);
659 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
660 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
661 rss += slot->tmps_max * sizeof (SV *);
662 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
663 rss += slot->scopestack_max * sizeof (I32);
664 rss += slot->savestack_max * sizeof (ANY);
665
666#if !PERL_VERSION_ATLEAST (5,9,0)
667 rss += slot->retstack_max * sizeof (OP *);
668#endif
669 }
670
671 return rss;
672}
673
542/** coroutine stack handling ************************************************/ 674/** coroutine stack handling ************************************************/
543 675
544static void 676static void
545setup_coro (pTHX_ struct coro *coro) 677coro_setup (pTHX_ struct coro *coro)
546{ 678{
547 /* 679 /*
548 * emulate part of the perl startup here. 680 * emulate part of the perl startup here.
549 */ 681 */
550 coro_init_stacks (aTHX); 682 coro_init_stacks (aTHX);
551 683
684 PL_runops = RUNOPS_DEFAULT;
552 PL_curcop = &PL_compiling; 685 PL_curcop = &PL_compiling;
553 PL_in_eval = EVAL_NULL; 686 PL_in_eval = EVAL_NULL;
554 PL_comppad = 0; 687 PL_comppad = 0;
555 PL_curpm = 0; 688 PL_curpm = 0;
689 PL_curpad = 0;
556 PL_localizing = 0; 690 PL_localizing = 0;
557 PL_dirty = 0; 691 PL_dirty = 0;
558 PL_restartop = 0; 692 PL_restartop = 0;
693 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
694 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
695
696 GvSV (PL_defgv) = newSV (0);
697 GvAV (PL_defgv) = coro->args; coro->args = 0;
698 GvSV (PL_errgv) = newSV (0);
699 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
700 PL_rs = newSVsv (GvSV (irsgv));
701 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
559 702
560 { 703 {
561 dSP; 704 dSP;
562 LOGOP myop; 705 LOGOP myop;
563 706
564 SvREFCNT_dec (GvAV (PL_defgv));
565 GvAV (PL_defgv) = coro->args; coro->args = 0;
566
567 Zero (&myop, 1, LOGOP); 707 Zero (&myop, 1, LOGOP);
568 myop.op_next = Nullop; 708 myop.op_next = Nullop;
569 myop.op_flags = OPf_WANT_VOID; 709 myop.op_flags = OPf_WANT_VOID;
570 710
571 PUSHMARK (SP); 711 PUSHMARK (SP);
572 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 712 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
573 PUTBACK; 713 PUTBACK;
574 PL_op = (OP *)&myop; 714 PL_op = (OP *)&myop;
575 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 715 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
576 SPAGAIN; 716 SPAGAIN;
717
718 /*
719 * now its very tricky. the "tail" of the next transfer might end up
720 * either in a new cctx, or an existing one.
721 * in case of an existing one we have to take care of whatever
722 * entersub and transfer do to the perl stack.
723 */
724 ENTER;
725 EXTEND (SP, 4);
726 PUSHs ((SV *)0); /* items */
727 PUSHs ((SV *)0); /* ix, set_stacklevel */
728 PUSHs ((SV *)(sp - PL_stack_base + 1)); /* ax */
729 PUSHs ((SV *)0); /* again */
730 PUTBACK;
577 } 731 }
732}
578 733
579 ENTER; /* necessary e.g. for dounwind */ 734static void
735coro_destroy (pTHX_ struct coro *coro)
736{
737 if (!IN_DESTRUCT)
738 {
739 /* restore all saved variables and stuff */
740 LEAVE_SCOPE (0);
741 assert (PL_tmps_floor == -1);
742
743 /* free all temporaries */
744 FREETMPS;
745 assert (PL_tmps_ix == -1);
746
747 /* unwind all extra stacks */
748 POPSTACK_TO (PL_mainstack);
749
750 /* unwind main stack */
751 dounwind (-1);
752 }
753
754 SvREFCNT_dec (GvSV (PL_defgv));
755 SvREFCNT_dec (GvAV (PL_defgv));
756 SvREFCNT_dec (GvSV (PL_errgv));
757 SvREFCNT_dec (PL_defoutgv);
758 SvREFCNT_dec (PL_rs);
759 SvREFCNT_dec (GvSV (irsgv));
760
761 SvREFCNT_dec (PL_diehook);
762 SvREFCNT_dec (PL_warnhook);
763
764 SvREFCNT_dec (coro->saved_deffh);
765 SvREFCNT_dec (coro->throw);
766
767 coro_destroy_stacks (aTHX);
580} 768}
581 769
582static void 770static void
583free_coro_mortal (pTHX) 771free_coro_mortal (pTHX)
584{ 772{
585 if (coro_mortal) 773 if (expect_true (coro_mortal))
586 { 774 {
587 SvREFCNT_dec (coro_mortal); 775 SvREFCNT_dec (coro_mortal);
588 coro_mortal = 0; 776 coro_mortal = 0;
589 } 777 }
590} 778}
591 779
780static int
781runops_trace (pTHX)
782{
783 COP *oldcop = 0;
784 int oldcxix = -2;
785 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
786 coro_cctx *cctx = coro->cctx;
787
788 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
789 {
790 PERL_ASYNC_CHECK ();
791
792 if (cctx->flags & CC_TRACE_ALL)
793 {
794 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
795 {
796 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
797 SV **bot, **top;
798 AV *av = newAV (); /* return values */
799 SV **cb;
800 dSP;
801
802 GV *gv = CvGV (cx->blk_sub.cv);
803 SV *fullname = sv_2mortal (newSV (0));
804 if (isGV (gv))
805 gv_efullname3 (fullname, gv, 0);
806
807 bot = PL_stack_base + cx->blk_oldsp + 1;
808 top = cx->blk_gimme == G_ARRAY ? SP + 1
809 : cx->blk_gimme == G_SCALAR ? bot + 1
810 : bot;
811
812 av_extend (av, top - bot);
813 while (bot < top)
814 av_push (av, SvREFCNT_inc (*bot++));
815
816 PL_runops = RUNOPS_DEFAULT;
817 ENTER;
818 SAVETMPS;
819 EXTEND (SP, 3);
820 PUSHMARK (SP);
821 PUSHs (&PL_sv_no);
822 PUSHs (fullname);
823 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
824 PUTBACK;
825 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
826 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
827 SPAGAIN;
828 FREETMPS;
829 LEAVE;
830 PL_runops = runops_trace;
831 }
832
833 if (oldcop != PL_curcop)
834 {
835 oldcop = PL_curcop;
836
837 if (PL_curcop != &PL_compiling)
838 {
839 SV **cb;
840
841 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
842 {
843 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
844
845 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
846 {
847 runops_proc_t old_runops = PL_runops;
848 dSP;
849 GV *gv = CvGV (cx->blk_sub.cv);
850 SV *fullname = sv_2mortal (newSV (0));
851
852 if (isGV (gv))
853 gv_efullname3 (fullname, gv, 0);
854
855 PL_runops = RUNOPS_DEFAULT;
856 ENTER;
857 SAVETMPS;
858 EXTEND (SP, 3);
859 PUSHMARK (SP);
860 PUSHs (&PL_sv_yes);
861 PUSHs (fullname);
862 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
863 PUTBACK;
864 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
865 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
866 SPAGAIN;
867 FREETMPS;
868 LEAVE;
869 PL_runops = runops_trace;
870 }
871
872 oldcxix = cxstack_ix;
873 }
874
875 if (cctx->flags & CC_TRACE_LINE)
876 {
877 dSP;
878
879 PL_runops = RUNOPS_DEFAULT;
880 ENTER;
881 SAVETMPS;
882 EXTEND (SP, 3);
883 PL_runops = RUNOPS_DEFAULT;
884 PUSHMARK (SP);
885 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
886 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
887 PUTBACK;
888 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
889 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
890 SPAGAIN;
891 FREETMPS;
892 LEAVE;
893 PL_runops = runops_trace;
894 }
895 }
896 }
897 }
898 }
899
900 TAINT_NOT;
901 return 0;
902}
903
592/* inject a fake call to Coro::State::_cctx_init into the execution */ 904/* inject a fake call to Coro::State::_cctx_init into the execution */
593/* _cctx_init shoukld be careful, as it could be called at almost any time */ 905/* _cctx_init should be careful, as it could be called at almost any time */
594/* during execution of a pelr program */ 906/* during execution of a perl program */
595static void NOINLINE 907static void NOINLINE
596prepare_cctx (pTHX_ coro_cctx *cctx) 908cctx_prepare (pTHX_ coro_cctx *cctx)
597{ 909{
598 dSP; 910 dSP;
599 LOGOP myop; 911 LOGOP myop;
912
913 PL_top_env = &PL_start_env;
914
915 if (cctx->flags & CC_TRACE)
916 PL_runops = runops_trace;
600 917
601 Zero (&myop, 1, LOGOP); 918 Zero (&myop, 1, LOGOP);
602 myop.op_next = PL_op; 919 myop.op_next = PL_op;
603 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 920 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
604 921
… …
614 931
615/* 932/*
616 * this is a _very_ stripped down perl interpreter ;) 933 * this is a _very_ stripped down perl interpreter ;)
617 */ 934 */
618static void 935static void
619coro_run (void *arg) 936cctx_run (void *arg)
620{ 937{
621 dTHX; 938 dTHX;
622 939
623 /* coro_run is the alternative tail of transfer(), so unlock here. */ 940 /* cctx_run is the alternative tail of transfer(), so unlock here. */
624 UNLOCK; 941 UNLOCK;
625 942
626 PL_top_env = &PL_start_env; 943 /* we now skip the entersub that lead to transfer() */
944 PL_op = PL_op->op_next;
627 945
628 /* inject a fake subroutine call to cctx_init */ 946 /* inject a fake subroutine call to cctx_init */
629 prepare_cctx (aTHX_ (coro_cctx *)arg); 947 cctx_prepare (aTHX_ (coro_cctx *)arg);
630 948
631 /* somebody or something will hit me for both perl_run and PL_restartop */ 949 /* somebody or something will hit me for both perl_run and PL_restartop */
632 PL_restartop = PL_op; 950 PL_restartop = PL_op;
633 perl_run (PL_curinterp); 951 perl_run (PL_curinterp);
634 952
953 /*
635 /* If perl-run returns we assume exit() was being called, which */ 954 * If perl-run returns we assume exit() was being called or the coro
636 /* seems to be the only valid (non-bug) reason for perl_run to return. */ 955 * fell off the end, which seems to be the only valid (non-bug)
637 /* We try to exit by jumping to the bootstrap-time "top" top_env, as */ 956 * reason for perl_run to return. We try to exit by jumping to the
638 /* we cannot restore the "main" coroutine as Coro has no such concept */ 957 * bootstrap-time "top" top_env, as we cannot restore the "main"
958 * coroutine as Coro has no such concept
959 */
639 PL_top_env = main_top_env; 960 PL_top_env = main_top_env;
640 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 961 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
641} 962}
642 963
643static coro_cctx * 964static coro_cctx *
… …
650 ++cctx_count; 971 ++cctx_count;
651 972
652 Newz (0, cctx, 1, coro_cctx); 973 Newz (0, cctx, 1, coro_cctx);
653 974
654#if HAVE_MMAP 975#if HAVE_MMAP
655
656 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 976 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
657 /* mmap supposedly does allocate-on-write for us */ 977 /* mmap supposedly does allocate-on-write for us */
658 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 978 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
659 979
660 if (cctx->sptr != (void *)-1) 980 if (cctx->sptr != (void *)-1)
… …
662# if CORO_STACKGUARD 982# if CORO_STACKGUARD
663 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 983 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
664# endif 984# endif
665 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 985 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
666 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 986 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
667 cctx->mapped = 1; 987 cctx->flags |= CC_MAPPED;
668 } 988 }
669 else 989 else
670#endif 990#endif
671 { 991 {
672 cctx->ssize = coro_stacksize * (long)sizeof (long); 992 cctx->ssize = coro_stacksize * (long)sizeof (long);
… …
681 stack_start = cctx->sptr; 1001 stack_start = cctx->sptr;
682 stack_size = cctx->ssize; 1002 stack_size = cctx->ssize;
683 } 1003 }
684 1004
685 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1005 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
686 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1006 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
687 1007
688 return cctx; 1008 return cctx;
689} 1009}
690 1010
691static void 1011static void
… …
699#if CORO_USE_VALGRIND 1019#if CORO_USE_VALGRIND
700 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1020 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
701#endif 1021#endif
702 1022
703#if HAVE_MMAP 1023#if HAVE_MMAP
704 if (cctx->mapped) 1024 if (cctx->flags & CC_MAPPED)
705 munmap (cctx->sptr, cctx->ssize); 1025 munmap (cctx->sptr, cctx->ssize);
706 else 1026 else
707#endif 1027#endif
708 Safefree (cctx->sptr); 1028 Safefree (cctx->sptr);
709 1029
710 Safefree (cctx); 1030 Safefree (cctx);
711} 1031}
712 1032
1033/* wether this cctx should be destructed */
1034#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1035
713static coro_cctx * 1036static coro_cctx *
714cctx_get (pTHX) 1037cctx_get (pTHX_ int gimme)
715{ 1038{
716 while (cctx_first) 1039 while (expect_true (cctx_first[gimme]))
717 { 1040 {
718 coro_cctx *cctx = cctx_first; 1041 coro_cctx *cctx = cctx_first[gimme];
719 cctx_first = cctx->next; 1042 cctx_first[gimme] = cctx->next;
720 --cctx_idle; 1043 --cctx_idle[gimme];
721 1044
722 if (cctx->ssize >= coro_stacksize) 1045 if (expect_true (!CCTX_EXPIRED (cctx)))
723 return cctx; 1046 return cctx;
724 1047
725 cctx_destroy (cctx); 1048 cctx_destroy (cctx);
726 } 1049 }
727 1050
728 PL_op = PL_op->op_next; 1051 assert (!gimme);
729 return cctx_new (); 1052 return cctx_new ();
730} 1053}
731 1054
732static void 1055static void
733cctx_put (coro_cctx *cctx) 1056cctx_put (coro_cctx *cctx, int gimme)
734{ 1057{
735 /* free another cctx if overlimit */ 1058 /* free another cctx if overlimit */
736 if (cctx_idle >= MAX_IDLE_CCTX) 1059 if (expect_false (cctx_idle[gimme] >= MAX_IDLE_CCTX))
737 { 1060 {
738 coro_cctx *first = cctx_first; 1061 coro_cctx *first = cctx_first[gimme];
739 cctx_first = first->next; 1062 cctx_first[gimme] = first->next;
740 --cctx_idle; 1063 --cctx_idle[gimme];
741 1064
742 assert (!first->inuse);
743 cctx_destroy (first); 1065 cctx_destroy (first);
744 } 1066 }
745 1067
746 ++cctx_idle; 1068 ++cctx_idle[gimme];
747 cctx->next = cctx_first; 1069 cctx->next = cctx_first[gimme];
748 cctx_first = cctx; 1070 cctx_first[gimme] = cctx;
749} 1071}
750 1072
751/** coroutine switching *****************************************************/ 1073/** coroutine switching *****************************************************/
752 1074
753/* never call directly, always through the coro_state_transfer global variable */ 1075static void
1076transfer_check (pTHX_ struct coro *prev, struct coro *next)
1077{
1078 if (expect_true (prev != next))
1079 {
1080 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1081 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1082
1083 if (expect_false (next->flags & CF_RUNNING))
1084 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1085
1086 if (expect_false (next->flags & CF_DESTROYED))
1087 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1088
1089 if (
1090#if PERL_VERSION_ATLEAST (5,9,0)
1091 expect_false (PL_parser)
1092#else
1093 expect_false (PL_lex_state != LEX_NOTPARSING)
1094#endif
1095 )
1096 croak ("Coro::State::transfer called while parsing, but this is not supported");
1097 }
1098}
1099
1100/* always use the TRANSFER macro */
754static void NOINLINE 1101static void NOINLINE
755transfer (pTHX_ struct coro *prev, struct coro *next) 1102transfer (pTHX_ struct coro *prev, struct coro *next)
756{ 1103{
757 dSTACKLEVEL; 1104 dSTACKLEVEL;
758 1105
759 /* sometimes transfer is only called to set idle_sp */ 1106 /* sometimes transfer is only called to set idle_sp */
760 if (!next) 1107 if (expect_false (!next))
761 { 1108 {
762 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1109 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
763 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1110 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
764 } 1111 }
765 else if (prev != next) 1112 else if (expect_true (prev != next))
766 { 1113 {
767 coro_cctx *prev__cctx; 1114 coro_cctx *prev__cctx;
768 1115
769 if (prev->flags & CF_NEW) 1116 if (expect_false (prev->flags & CF_NEW))
770 { 1117 {
771 /* create a new empty context */ 1118 /* create a new empty context */
772 Newz (0, prev->cctx, 1, coro_cctx); 1119 Newz (0, prev->cctx, 1, coro_cctx);
773 prev->cctx->inuse = 1;
774 prev->flags &= ~CF_NEW; 1120 prev->flags &= ~CF_NEW;
775 prev->flags |= CF_RUNNING; 1121 prev->flags |= CF_RUNNING;
776 } 1122 }
777 1123
778 /*TODO: must not croak here */
779 if (!prev->flags & CF_RUNNING)
780 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
781
782 if (next->flags & CF_RUNNING)
783 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
784
785 if (next->flags & CF_DESTROYED)
786 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
787
788 prev->flags &= ~CF_RUNNING; 1124 prev->flags &= ~CF_RUNNING;
789 next->flags |= CF_RUNNING; 1125 next->flags |= CF_RUNNING;
790 1126
791 LOCK; 1127 LOCK;
792 1128
793 if (next->flags & CF_NEW) 1129 if (expect_false (next->flags & CF_NEW))
794 { 1130 {
795 /* need to start coroutine */ 1131 /* need to start coroutine */
796 next->flags &= ~CF_NEW; 1132 next->flags &= ~CF_NEW;
797 /* first get rid of the old state */ 1133 /* first get rid of the old state */
798 save_perl (aTHX_ prev); 1134 save_perl (aTHX_ prev);
799 /* setup coroutine call */ 1135 /* setup coroutine call */
800 setup_coro (aTHX_ next); 1136 coro_setup (aTHX_ next);
801 /* need a new stack */
802 assert (!next->cctx);
803 } 1137 }
804 else 1138 else
805 { 1139 {
806 /* coroutine already started */ 1140 /* coroutine already started */
807 save_perl (aTHX_ prev); 1141 save_perl (aTHX_ prev);
… …
809 } 1143 }
810 1144
811 prev__cctx = prev->cctx; 1145 prev__cctx = prev->cctx;
812 1146
813 /* possibly "free" the cctx */ 1147 /* possibly "free" the cctx */
814 if (prev__cctx->idle_sp == STACKLEVEL) 1148 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
815 { 1149 {
816 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1150 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
817 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1151 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
818 1152
819 prev->cctx = 0; 1153 prev->cctx = 0;
820 1154
1155 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1156 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1157 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1158 if (!next->cctx)
1159 next->cctx = cctx_get (aTHX_ next->gimme);
1160
821 cctx_put (prev__cctx); 1161 cctx_put (prev__cctx, prev->gimme);
822 prev__cctx->inuse = 0;
823 } 1162 }
824 1163
1164 ++next->usecount;
1165
825 if (!next->cctx) 1166 if (expect_true (!next->cctx))
826 {
827 next->cctx = cctx_get (aTHX); 1167 next->cctx = cctx_get (aTHX_ next->gimme);
828 assert (!next->cctx->inuse);
829 next->cctx->inuse = 1;
830 }
831 1168
832 if (prev__cctx != next->cctx) 1169 if (expect_false (prev__cctx != next->cctx))
833 { 1170 {
834 prev__cctx->top_env = PL_top_env; 1171 prev__cctx->top_env = PL_top_env;
835 PL_top_env = next->cctx->top_env; 1172 PL_top_env = next->cctx->top_env;
836 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1173 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
837 } 1174 }
838 1175
839 free_coro_mortal (aTHX); 1176 free_coro_mortal (aTHX);
840 UNLOCK; 1177 UNLOCK;
1178
1179 if (expect_false (prev->throw || next->throw))
1180 {
1181 struct coro *coro = SvSTATE (coro_current);
1182
1183 if (coro->throw)
1184 {
1185 SV *exception = coro->throw;
1186 coro->throw = 0;
1187 sv_setsv (ERRSV, exception);
1188 croak (0);
1189 }
1190 }
841 } 1191 }
842} 1192}
843 1193
844struct transfer_args 1194struct transfer_args
845{ 1195{
846 struct coro *prev, *next; 1196 struct coro *prev, *next;
847}; 1197};
848 1198
849#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1199#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
1200#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
850 1201
851/** high level stuff ********************************************************/ 1202/** high level stuff ********************************************************/
852 1203
853static int 1204static int
854coro_state_destroy (pTHX_ struct coro *coro) 1205coro_state_destroy (pTHX_ struct coro *coro)
… …
871 1222
872 if (coro->mainstack && coro->mainstack != main_mainstack) 1223 if (coro->mainstack && coro->mainstack != main_mainstack)
873 { 1224 {
874 struct coro temp; 1225 struct coro temp;
875 1226
876 assert (!(coro->flags & CF_RUNNING));
877
878 Zero (&temp, 1, struct coro);
879 temp.save = CORO_SAVE_DEF;
880
881 if (coro->flags & CF_RUNNING) 1227 if (coro->flags & CF_RUNNING)
882 croak ("FATAL: tried to destroy currently running coroutine"); 1228 croak ("FATAL: tried to destroy currently running coroutine");
883 1229
884 save_perl (aTHX_ &temp); 1230 save_perl (aTHX_ &temp);
885 load_perl (aTHX_ coro); 1231 load_perl (aTHX_ coro);
886 1232
887 coro_destroy_stacks (aTHX); 1233 coro_destroy (aTHX_ coro);
888 1234
889 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1235 load_perl (aTHX_ &temp);
890 1236
891 coro->mainstack = 0; 1237 coro->slot = 0;
892 } 1238 }
893 1239
894 cctx_destroy (coro->cctx); 1240 cctx_destroy (coro->cctx);
895 SvREFCNT_dec (coro->args); 1241 SvREFCNT_dec (coro->args);
896 1242
1243 if (coro->next) coro->next->prev = coro->prev;
1244 if (coro->prev) coro->prev->next = coro->next;
1245 if (coro == coro_first) coro_first = coro->next;
1246
897 return 1; 1247 return 1;
898} 1248}
899 1249
900static int 1250static int
901coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1251coro_state_free (pTHX_ SV *sv, MAGIC *mg)
902{ 1252{
903 struct coro *coro = (struct coro *)mg->mg_ptr; 1253 struct coro *coro = (struct coro *)mg->mg_ptr;
904 mg->mg_ptr = 0; 1254 mg->mg_ptr = 0;
1255
1256 coro->hv = 0;
905 1257
906 if (--coro->refcnt < 0) 1258 if (--coro->refcnt < 0)
907 { 1259 {
908 coro_state_destroy (aTHX_ coro); 1260 coro_state_destroy (aTHX_ coro);
909 Safefree (coro); 1261 Safefree (coro);
… …
931#else 1283#else
932# define MGf_DUP 0 1284# define MGf_DUP 0
933#endif 1285#endif
934}; 1286};
935 1287
936static struct coro *
937SvSTATE_ (pTHX_ SV *coro)
938{
939 HV *stash;
940 MAGIC *mg;
941
942 if (SvROK (coro))
943 coro = SvRV (coro);
944
945 stash = SvSTASH (coro);
946 if (stash != coro_stash && stash != coro_state_stash)
947 {
948 /* very slow, but rare, check */
949 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
950 croak ("Coro::State object required");
951 }
952
953 mg = CORO_MAGIC (coro);
954 return (struct coro *)mg->mg_ptr;
955}
956
957#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
958
959static void 1288static void
960prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1289prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
961{ 1290{
962 ta->prev = SvSTATE (prev_sv); 1291 ta->prev = SvSTATE (prev_sv);
963 ta->next = SvSTATE (next_sv); 1292 ta->next = SvSTATE (next_sv);
1293 TRANSFER_CHECK (*ta);
964} 1294}
965 1295
966static void 1296static void
967api_transfer (SV *prev_sv, SV *next_sv) 1297api_transfer (SV *prev_sv, SV *next_sv)
968{ 1298{
969 dTHX; 1299 dTHX;
970 struct transfer_args ta; 1300 struct transfer_args ta;
971 1301
972 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1302 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
973 TRANSFER (ta); 1303 TRANSFER (ta);
974}
975
976static int
977api_save (SV *coro_sv, int new_save)
978{
979 dTHX;
980 struct coro *coro = SvSTATE (coro_sv);
981 int old_save = coro->save;
982
983 if (new_save >= 0)
984 coro->save = new_save;
985
986 return old_save;
987} 1304}
988 1305
989/** Coro ********************************************************************/ 1306/** Coro ********************************************************************/
990 1307
991static void 1308static void
… …
1050 { 1367 {
1051 LOCK; 1368 LOCK;
1052 next_sv = coro_deq (aTHX_ PRIO_MIN); 1369 next_sv = coro_deq (aTHX_ PRIO_MIN);
1053 1370
1054 /* nothing to schedule: call the idle handler */ 1371 /* nothing to schedule: call the idle handler */
1055 if (!next_sv) 1372 if (expect_false (!next_sv))
1056 { 1373 {
1057 dSP; 1374 dSP;
1058 UNLOCK; 1375 UNLOCK;
1059 1376
1060 ENTER; 1377 ENTER;
… …
1070 } 1387 }
1071 1388
1072 ta->next = SvSTATE (next_sv); 1389 ta->next = SvSTATE (next_sv);
1073 1390
1074 /* cannot transfer to destroyed coros, skip and look for next */ 1391 /* cannot transfer to destroyed coros, skip and look for next */
1075 if (ta->next->flags & CF_DESTROYED) 1392 if (expect_false (ta->next->flags & CF_DESTROYED))
1076 { 1393 {
1077 UNLOCK; 1394 UNLOCK;
1078 SvREFCNT_dec (next_sv); 1395 SvREFCNT_dec (next_sv);
1079 /* coro_nready is already taken care of by destroy */ 1396 /* coro_nready is already taken care of by destroy */
1080 continue; 1397 continue;
… …
1085 break; 1402 break;
1086 } 1403 }
1087 1404
1088 /* free this only after the transfer */ 1405 /* free this only after the transfer */
1089 prev_sv = SvRV (coro_current); 1406 prev_sv = SvRV (coro_current);
1090 SvRV_set (coro_current, next_sv);
1091 ta->prev = SvSTATE (prev_sv); 1407 ta->prev = SvSTATE (prev_sv);
1092 1408 TRANSFER_CHECK (*ta);
1093 assert (ta->next->flags & CF_READY); 1409 assert (ta->next->flags & CF_READY);
1094 ta->next->flags &= ~CF_READY; 1410 ta->next->flags &= ~CF_READY;
1411 SvRV_set (coro_current, next_sv);
1095 1412
1096 LOCK; 1413 LOCK;
1097 free_coro_mortal (aTHX); 1414 free_coro_mortal (aTHX);
1098 coro_mortal = prev_sv; 1415 coro_mortal = prev_sv;
1099 UNLOCK; 1416 UNLOCK;
… …
1136 dTHX; 1453 dTHX;
1137 struct transfer_args ta; 1454 struct transfer_args ta;
1138 1455
1139 prepare_cede (aTHX_ &ta); 1456 prepare_cede (aTHX_ &ta);
1140 1457
1141 if (ta.prev != ta.next) 1458 if (expect_true (ta.prev != ta.next))
1142 { 1459 {
1143 TRANSFER (ta); 1460 TRANSFER (ta);
1144 return 1; 1461 return 1;
1145 } 1462 }
1146 else 1463 else
… …
1160 } 1477 }
1161 else 1478 else
1162 return 0; 1479 return 0;
1163} 1480}
1164 1481
1482static void
1483api_trace (SV *coro_sv, int flags)
1484{
1485 dTHX;
1486 struct coro *coro = SvSTATE (coro_sv);
1487
1488 if (flags & CC_TRACE)
1489 {
1490 if (!coro->cctx)
1491 coro->cctx = cctx_new ();
1492 else if (!(coro->cctx->flags & CC_TRACE))
1493 croak ("cannot enable tracing on coroutine with custom stack");
1494
1495 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1496 }
1497 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1498 {
1499 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1500
1501 if (coro->flags & CF_RUNNING)
1502 PL_runops = RUNOPS_DEFAULT;
1503 else
1504 coro->slot->runops = RUNOPS_DEFAULT;
1505 }
1506}
1507
1165MODULE = Coro::State PACKAGE = Coro::State 1508MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1166 1509
1167PROTOTYPES: DISABLE 1510PROTOTYPES: DISABLE
1168 1511
1169BOOT: 1512BOOT:
1170{ 1513{
1171#ifdef USE_ITHREADS 1514#ifdef USE_ITHREADS
1172 MUTEX_INIT (&coro_mutex); 1515 MUTEX_INIT (&coro_mutex);
1173#endif 1516#endif
1174 BOOT_PAGESIZE; 1517 BOOT_PAGESIZE;
1175 1518
1519 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1520 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1521
1522 hv_sig = coro_get_hv ("SIG", TRUE);
1523 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
1524 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
1525
1526 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1527 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1528
1176 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1529 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1177 1530
1178 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1531 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1179 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 1532 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1180 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1181 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1182 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1183 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); 1533 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1184 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1534 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1185 1535
1186 main_mainstack = PL_mainstack; 1536 main_mainstack = PL_mainstack;
1187 main_top_env = PL_top_env; 1537 main_top_env = PL_top_env;
1188 1538
1189 while (main_top_env->je_prev) 1539 while (main_top_env->je_prev)
… …
1202 struct coro *coro; 1552 struct coro *coro;
1203 HV *hv; 1553 HV *hv;
1204 int i; 1554 int i;
1205 1555
1206 Newz (0, coro, 1, struct coro); 1556 Newz (0, coro, 1, struct coro);
1207 coro->args = newAV (); 1557 coro->args = newAV ();
1208 coro->save = CORO_SAVE_DEF;
1209 coro->flags = CF_NEW; 1558 coro->flags = CF_NEW;
1210 1559
1560 if (coro_first) coro_first->prev = coro;
1561 coro->next = coro_first;
1562 coro_first = coro;
1563
1211 hv = newHV (); 1564 coro->hv = hv = newHV ();
1212 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1565 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1213 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1566 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1214 1567
1568 av_extend (coro->args, items - 1);
1215 for (i = 1; i < items; i++) 1569 for (i = 1; i < items; i++)
1216 av_push (coro->args, newSVsv (ST (i))); 1570 av_push (coro->args, newSVsv (ST (i)));
1217} 1571}
1218 OUTPUT: 1572 OUTPUT:
1219 RETVAL 1573 RETVAL
1220 1574
1221int 1575# these not obviously related functions are all rolled into the same xs
1222save (SV *coro, int new_save = -1) 1576# function to increase chances that they all will call transfer with the same
1223 CODE: 1577# stack offset
1224 RETVAL = api_save (coro, new_save);
1225 OUTPUT:
1226 RETVAL
1227
1228int
1229save_also (SV *coro_sv, int save_also)
1230 CODE:
1231{
1232 struct coro *coro = SvSTATE (coro_sv);
1233 RETVAL = coro->save;
1234 coro->save |= save_also;
1235}
1236 OUTPUT:
1237 RETVAL
1238
1239void 1578void
1240_set_stacklevel (...) 1579_set_stacklevel (...)
1241 ALIAS: 1580 ALIAS:
1242 Coro::State::transfer = 1 1581 Coro::State::transfer = 1
1243 Coro::schedule = 2 1582 Coro::schedule = 2
1244 Coro::cede = 3 1583 Coro::cede = 3
1245 Coro::cede_notself = 4 1584 Coro::cede_notself = 4
1585 Coro::Event::next = 5
1586 Coro::Event::next_cancel = 6
1246 CODE: 1587 PPCODE:
1247{ 1588{
1248 struct transfer_args ta; 1589 struct transfer_args ta;
1590 int again = 0;
1249 1591
1250 switch (ix) 1592 do
1251 { 1593 {
1594 switch (ix)
1595 {
1252 case 0: 1596 case 0:
1253 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1597 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1254 ta.next = 0; 1598 ta.next = 0;
1255 break; 1599 break;
1256 1600
1257 case 1: 1601 case 1:
1258 if (items != 2) 1602 if (items != 2)
1259 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1603 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1260 1604
1261 prepare_transfer (aTHX_ &ta, ST (0), ST (1)); 1605 prepare_transfer (aTHX_ &ta, ST(0), ST(1));
1262 break; 1606 break;
1263 1607
1264 case 2: 1608 case 2:
1265 prepare_schedule (aTHX_ &ta); 1609 prepare_schedule (aTHX_ &ta);
1266 break; 1610 break;
1267 1611
1268 case 3: 1612 case 3:
1269 prepare_cede (aTHX_ &ta); 1613 prepare_cede (aTHX_ &ta);
1270 break; 1614 break;
1271 1615
1272 case 4: 1616 case 4:
1273 if (!prepare_cede_notself (aTHX_ &ta)) 1617 if (!prepare_cede_notself (aTHX_ &ta))
1274 XSRETURN_EMPTY; 1618 XSRETURN_EMPTY;
1275 1619
1276 break; 1620 break;
1621
1622 case 5:
1623 case 6:
1624 if (items != 1)
1625 croak ("Coro::Event::next (watcher) expects one argument, not %d", items);
1626
1627 {
1628 SV *ev = coroapi.coro_event_next (ST (0), ix == 6, GIMME_V != G_VOID);
1629
1630 if (ev)
1631 {
1632 if (GIMME_V != G_VOID)
1633 {
1634 XPUSHs (ev);
1635 XSRETURN (1);
1636 }
1637 else
1638 XSRETURN_EMPTY;
1639 }
1640 }
1641
1642 prepare_schedule (aTHX_ &ta);
1643 again = 1;
1644 break;
1645 }
1646
1647 /* our caller, entersub, caches *only* this value */
1648 ta.prev->gimme = GIMME_V == G_VOID ? 0
1649 : GIMME_V == G_SCALAR ? 1
1650 : 2;
1651
1652 /* we need to save all local variables, as we might execute a different coroutine when transfer returns */
1653 sp += 2; /* save args */
1654 EXTEND (SP, 4);
1655 PUSHs ((SV *)(intptr_t)items);
1656 PUSHs ((SV *)(intptr_t)ix);
1657 PUSHs ((SV *)(intptr_t)ax);
1658 PUSHs ((SV *)(intptr_t)again);
1659 PUTBACK;
1660 BARRIER;
1661 TRANSFER (ta);
1662 BARRIER;
1663 SPAGAIN;
1664 again = (intptr_t)POPs;
1665 ax = (intptr_t)POPs;
1666 ix = (intptr_t)POPs;
1667 items = (intptr_t)POPs;
1668 sp -= 2; /* restore args */
1277 } 1669 }
1670 while (again);
1278 1671
1279 BARRIER;
1280 TRANSFER (ta);
1281
1282 if (GIMME_V != G_VOID && ta.next != ta.prev) 1672 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1283 XSRETURN_YES; 1673 XSRETURN_YES;
1674
1675 XSRETURN_EMPTY; /* not understood why this is necessary, likely some stack handling bug */
1284} 1676}
1285 1677
1286bool 1678bool
1287_destroy (SV *coro_sv) 1679_destroy (SV *coro_sv)
1288 CODE: 1680 CODE:
… …
1314 RETVAL 1706 RETVAL
1315 1707
1316int 1708int
1317cctx_idle () 1709cctx_idle ()
1318 CODE: 1710 CODE:
1319 RETVAL = cctx_idle; 1711 RETVAL = cctx_idle[0] + cctx_idle[1] + cctx_idle[2];
1320 OUTPUT: 1712 OUTPUT:
1321 RETVAL 1713 RETVAL
1322 1714
1715void
1716list ()
1717 PPCODE:
1718{
1719 struct coro *coro;
1720 for (coro = coro_first; coro; coro = coro->next)
1721 if (coro->hv)
1722 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1723}
1724
1725void
1726call (Coro::State coro, SV *coderef)
1727 ALIAS:
1728 eval = 1
1729 CODE:
1730{
1731 if (coro->mainstack)
1732 {
1733 struct coro temp;
1734
1735 if (!(coro->flags & CF_RUNNING))
1736 {
1737 save_perl (aTHX_ &temp);
1738 load_perl (aTHX_ coro);
1739 }
1740
1741 {
1742 dSP;
1743 ENTER;
1744 SAVETMPS;
1745 PUTBACK;
1746 PUSHSTACK;
1747 PUSHMARK (SP);
1748
1749 if (ix)
1750 eval_sv (coderef, 0);
1751 else
1752 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1753
1754 POPSTACK;
1755 FREETMPS;
1756 LEAVE;
1757 }
1758
1759 if (!(coro->flags & CF_RUNNING))
1760 {
1761 save_perl (aTHX_ coro);
1762 load_perl (aTHX_ &temp);
1763 }
1764 }
1765}
1766
1767SV *
1768is_ready (Coro::State coro)
1769 PROTOTYPE: $
1770 ALIAS:
1771 is_ready = CF_READY
1772 is_running = CF_RUNNING
1773 is_new = CF_NEW
1774 is_destroyed = CF_DESTROYED
1775 CODE:
1776 RETVAL = boolSV (coro->flags & ix);
1777 OUTPUT:
1778 RETVAL
1779
1780void
1781api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1782
1783SV *
1784has_stack (Coro::State coro)
1785 PROTOTYPE: $
1786 CODE:
1787 RETVAL = boolSV (!!coro->cctx);
1788 OUTPUT:
1789 RETVAL
1790
1791int
1792is_traced (Coro::State coro)
1793 PROTOTYPE: $
1794 CODE:
1795 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1796 OUTPUT:
1797 RETVAL
1798
1799IV
1800rss (Coro::State coro)
1801 PROTOTYPE: $
1802 ALIAS:
1803 usecount = 1
1804 CODE:
1805 switch (ix)
1806 {
1807 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1808 case 1: RETVAL = coro->usecount; break;
1809 }
1810 OUTPUT:
1811 RETVAL
1812
1813
1323MODULE = Coro::State PACKAGE = Coro 1814MODULE = Coro::State PACKAGE = Coro
1324 1815
1325BOOT: 1816BOOT:
1326{ 1817{
1327 int i; 1818 int i;
1328 1819
1820 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1821 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1822 av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
1823
1824 coro_current = coro_get_sv ("Coro::current", FALSE);
1825 SvREADONLY_on (coro_current);
1826
1329 coro_stash = gv_stashpv ("Coro", TRUE); 1827 coro_stash = gv_stashpv ("Coro", TRUE);
1330 1828
1331 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1829 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1332 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1830 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1333 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1831 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1334 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1832 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1335 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1833 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1336 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1834 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1337 1835
1338 coro_current = get_sv ("Coro::current", FALSE);
1339 SvREADONLY_on (coro_current);
1340
1341 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1836 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1342 coro_ready[i] = newAV (); 1837 coro_ready[i] = newAV ();
1343 1838
1344 { 1839 {
1345 SV *sv = perl_get_sv("Coro::API", 1); 1840 SV *sv = perl_get_sv ("Coro::API", TRUE);
1841 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1346 1842
1347 coroapi.schedule = api_schedule; 1843 coroapi.schedule = api_schedule;
1348 coroapi.save = api_save;
1349 coroapi.cede = api_cede; 1844 coroapi.cede = api_cede;
1350 coroapi.cede_notself = api_cede_notself; 1845 coroapi.cede_notself = api_cede_notself;
1351 coroapi.ready = api_ready; 1846 coroapi.ready = api_ready;
1352 coroapi.is_ready = api_is_ready; 1847 coroapi.is_ready = api_is_ready;
1353 coroapi.nready = &coro_nready; 1848 coroapi.nready = &coro_nready;
… …
1394 CODE: 1889 CODE:
1395 RETVAL = boolSV (api_ready (self)); 1890 RETVAL = boolSV (api_ready (self));
1396 OUTPUT: 1891 OUTPUT:
1397 RETVAL 1892 RETVAL
1398 1893
1399SV *
1400is_ready (SV *self)
1401 PROTOTYPE: $
1402 CODE:
1403 RETVAL = boolSV (api_is_ready (self));
1404 OUTPUT:
1405 RETVAL
1406
1407int 1894int
1408nready (...) 1895nready (...)
1409 PROTOTYPE: 1896 PROTOTYPE:
1410 CODE: 1897 CODE:
1411 RETVAL = coro_nready; 1898 RETVAL = coro_nready;
1412 OUTPUT: 1899 OUTPUT:
1413 RETVAL 1900 RETVAL
1414 1901
1902void
1903throw (Coro::State self, SV *throw = &PL_sv_undef)
1904 PROTOTYPE: $;$
1905 CODE:
1906 SvREFCNT_dec (self->throw);
1907 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1908
1909# for async_pool speedup
1910void
1911_pool_1 (SV *cb)
1912 CODE:
1913{
1914 struct coro *coro = SvSTATE (coro_current);
1915 HV *hv = (HV *)SvRV (coro_current);
1916 AV *defav = GvAV (PL_defgv);
1917 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
1918 AV *invoke_av;
1919 int i, len;
1920
1921 if (!invoke)
1922 croak ("\3async_pool terminate\2\n");
1923
1924 SvREFCNT_dec (coro->saved_deffh);
1925 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1926
1927 hv_store (hv, "desc", sizeof ("desc") - 1,
1928 newSVpvn (strpair ("[async_pool]")), 0);
1929
1930 invoke_av = (AV *)SvRV (invoke);
1931 len = av_len (invoke_av);
1932
1933 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1934
1935 if (len > 0)
1936 {
1937 av_fill (defav, len - 1);
1938 for (i = 0; i < len; ++i)
1939 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1940 }
1941
1942 SvREFCNT_dec (invoke);
1943}
1944
1945void
1946_pool_2 (SV *cb)
1947 CODE:
1948{
1949 struct coro *coro = SvSTATE (coro_current);
1950
1951 sv_setsv (cb, &PL_sv_undef);
1952
1953 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1954 coro->saved_deffh = 0;
1955
1956 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1957 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1958 croak ("\3async_pool terminate\2\n");
1959
1960 av_clear (GvAV (PL_defgv));
1961 hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
1962 newSVpvn (strpair ("[async_pool idle]")), 0);
1963
1964 coro->prio = 0;
1965
1966 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1967 api_trace (coro_current, 0);
1968
1969 av_push (av_async_pool, newSVsv (coro_current));
1970}
1971
1972
1415MODULE = Coro::State PACKAGE = Coro::AIO 1973MODULE = Coro::State PACKAGE = Coro::AIO
1416 1974
1417SV * 1975SV *
1418_get_state () 1976_get_state ()
1419 CODE: 1977 CODE:

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