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Comparing Coro/Coro/State.xs (file contents):
Revision 1.152 by root, Thu Sep 20 12:02:25 2007 UTC vs.
Revision 1.197 by root, Sat Oct 6 19:25:00 2007 UTC

… …
75/* 5.8.7 */ 75/* 5.8.7 */
76#ifndef SvRV_set 76#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 77# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 78#endif
79 79
80/* 5.8.8 */
81#ifndef GV_NOTQUAL
82# define GV_NOTQUAL 0
83#endif
84#ifndef newSV
85# define newSV(l) NEWSV(0,l)
86#endif
87
80#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 88#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
81# undef CORO_STACKGUARD 89# undef CORO_STACKGUARD
82#endif 90#endif
83 91
84#ifndef CORO_STACKGUARD 92#ifndef CORO_STACKGUARD
… …
88/* prefer perl internal functions over our own? */ 96/* prefer perl internal functions over our own? */
89#ifndef CORO_PREFER_PERL_FUNCTIONS 97#ifndef CORO_PREFER_PERL_FUNCTIONS
90# define CORO_PREFER_PERL_FUNCTIONS 0 98# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 99#endif
92 100
93/* The next macro should declare a variable stacklevel that contains and approximation 101/* 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 102 * portable way as possible. */
95 * and should be unique. */
96#define dSTACKLEVEL int stacklevel 103#define dSTACKLEVEL volatile char stacklevel
97#define STACKLEVEL ((void *)&stacklevel) 104#define STACKLEVEL ((void *)&stacklevel)
98 105
99#define IN_DESTRUCT (PL_main_cv == Nullcv) 106#define IN_DESTRUCT (PL_main_cv == Nullcv)
100 107
101#if __GNUC__ >= 3 108#if __GNUC__ >= 3
102# define attribute(x) __attribute__(x) 109# define attribute(x) __attribute__(x)
103# define BARRIER __asm__ __volatile__ ("" : : : "memory") 110# define BARRIER __asm__ __volatile__ ("" : : : "memory")
111# define expect(expr,value) __builtin_expect ((expr),(value))
104#else 112#else
105# define attribute(x) 113# define attribute(x)
106# define BARRIER 114# define BARRIER
115# define expect(expr,value) (expr)
107#endif 116#endif
117
118#define expect_false(expr) expect ((expr) != 0, 0)
119#define expect_true(expr) expect ((expr) != 0, 1)
108 120
109#define NOINLINE attribute ((noinline)) 121#define NOINLINE attribute ((noinline))
110 122
111#include "CoroAPI.h" 123#include "CoroAPI.h"
112 124
… …
133static AV *main_mainstack; /* used to differentiate between $main and others */ 145static AV *main_mainstack; /* used to differentiate between $main and others */
134static JMPENV *main_top_env; 146static JMPENV *main_top_env;
135static HV *coro_state_stash, *coro_stash; 147static HV *coro_state_stash, *coro_stash;
136static SV *coro_mortal; /* will be freed after next transfer */ 148static SV *coro_mortal; /* will be freed after next transfer */
137 149
150static GV *irsgv; /* $/ */
151static GV *stdoutgv; /* *STDOUT */
152
153/* async_pool helper stuff */
154static SV *sv_pool_rss;
155static SV *sv_pool_size;
156static AV *av_async_pool;
157
138static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
139static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
160
161enum {
162 CC_MAPPED = 0x01,
163 CC_NOREUSE = 0x02, /* throw this away after tracing */
164 CC_TRACE = 0x04,
165 CC_TRACE_SUB = 0x08, /* trace sub calls */
166 CC_TRACE_LINE = 0x10, /* trace each statement */
167 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
168};
140 169
141/* this is a structure representing a c-level coroutine */ 170/* this is a structure representing a c-level coroutine */
142typedef struct coro_cctx { 171typedef struct coro_cctx {
143 struct coro_cctx *next; 172 struct coro_cctx *next;
144 173
… …
153 coro_context cctx; 182 coro_context cctx;
154 183
155#if CORO_USE_VALGRIND 184#if CORO_USE_VALGRIND
156 int valgrind_id; 185 int valgrind_id;
157#endif 186#endif
158 char inuse, mapped; 187 unsigned char flags;
159} coro_cctx; 188} coro_cctx;
160 189
161enum { 190enum {
162 CF_RUNNING = 0x0001, /* coroutine is running */ 191 CF_RUNNING = 0x0001, /* coroutine is running */
163 CF_READY = 0x0002, /* coroutine is ready */ 192 CF_READY = 0x0002, /* coroutine is ready */
… …
171 coro_cctx *cctx; 200 coro_cctx *cctx;
172 201
173 /* data associated with this coroutine (initial args) */ 202 /* data associated with this coroutine (initial args) */
174 AV *args; 203 AV *args;
175 int refcnt; 204 int refcnt;
176 int save; /* CORO_SAVE flags */
177 int flags; /* CF_ flags */ 205 int flags; /* CF_ flags */
178 206
179 /* optionally saved, might be zero */ 207 /* optionally saved, might be zero */
180 AV *defav; /* @_ */ 208 AV *defav; /* @_ */
181 SV *defsv; /* $_ */ 209 SV *defsv; /* $_ */
182 SV *errsv; /* $@ */ 210 SV *errsv; /* $@ */
183 GV *deffh; /* default filehandle */ 211 SV *deffh; /* default filehandle */
184 SV *irssv; /* $/ */ 212 SV *irssv; /* $/ */
185 SV *irssv_sv; /* real $/ cache */ 213 SV *irssv_sv; /* real $/ cache */
186 214
187#define VAR(name,type) type name; 215#define VAR(name,type) type name;
188# include "state.h" 216# include "state.h"
189#undef VAR 217#undef VAR
190 218
219 /* statistics */
220 int usecount; /* number of transfers to this coro */
221
191 /* coro process data */ 222 /* coro process data */
192 int prio; 223 int prio;
224 SV *throw;
225
226 /* async_pool */
227 SV *saved_deffh;
193 228
194 /* linked list */ 229 /* linked list */
195 struct coro *next, *prev; 230 struct coro *next, *prev;
196 HV *hv; /* the perl hash associated with this coro, if any */ 231 HV *hv; /* the perl hash associated with this coro, if any */
197}; 232};
… …
210 245
211/* for Coro.pm */ 246/* for Coro.pm */
212static SV *coro_current; 247static SV *coro_current;
213static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 248static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
214static int coro_nready; 249static int coro_nready;
215static struct coro *first; 250static struct coro *coro_first;
216 251
217/** lowlevel stuff **********************************************************/ 252/** lowlevel stuff **********************************************************/
218 253
219static AV * 254static AV *
220coro_clone_padlist (pTHX_ CV *cv) 255coro_clone_padlist (pTHX_ CV *cv)
… …
286 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 321 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
287 ? SvMAGIC (cv) \ 322 ? SvMAGIC (cv) \
288 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 323 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
289 : 0 324 : 0
290 325
326static struct coro *
327SvSTATE_ (pTHX_ SV *coro)
328{
329 HV *stash;
330 MAGIC *mg;
331
332 if (SvROK (coro))
333 coro = SvRV (coro);
334
335 if (expect_false (SvTYPE (coro) != SVt_PVHV))
336 croak ("Coro::State object required");
337
338 stash = SvSTASH (coro);
339 if (expect_false (stash != coro_stash && stash != coro_state_stash))
340 {
341 /* very slow, but rare, check */
342 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
343 croak ("Coro::State object required");
344 }
345
346 mg = CORO_MAGIC (coro);
347 return (struct coro *)mg->mg_ptr;
348}
349
350#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
351
291/* the next two functions merely cache the padlists */ 352/* the next two functions merely cache the padlists */
292static void 353static void
293get_padlist (pTHX_ CV *cv) 354get_padlist (pTHX_ CV *cv)
294{ 355{
295 MAGIC *mg = CORO_MAGIC (cv); 356 MAGIC *mg = CORO_MAGIC (cv);
296 AV *av; 357 AV *av;
297 358
298 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 359 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 360 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300 else 361 else
301 { 362 {
302#if CORO_PREFER_PERL_FUNCTIONS 363#if CORO_PREFER_PERL_FUNCTIONS
303 /* this is probably cleaner, but also slower? */ 364 /* this is probably cleaner, but also slower? */
… …
315put_padlist (pTHX_ CV *cv) 376put_padlist (pTHX_ CV *cv)
316{ 377{
317 MAGIC *mg = CORO_MAGIC (cv); 378 MAGIC *mg = CORO_MAGIC (cv);
318 AV *av; 379 AV *av;
319 380
320 if (!mg) 381 if (expect_false (!mg))
321 { 382 {
322 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); 383 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323 mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 384 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324 mg->mg_virtual = &vtbl_coro; 385 mg->mg_virtual = &vtbl_coro;
325 mg->mg_obj = (SV *)newAV (); 386 mg->mg_obj = (SV *)newAV ();
326 } 387 }
327 388
328 av = (AV *)mg->mg_obj; 389 av = (AV *)mg->mg_obj;
329 390
330 if (AvFILLp (av) >= AvMAX (av)) 391 if (expect_false (AvFILLp (av) >= AvMAX (av)))
331 av_extend (av, AvMAX (av) + 1); 392 av_extend (av, AvMAX (av) + 1);
332 393
333 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 394 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334} 395}
335 396
336/** load & save, init *******************************************************/ 397/** load & save, init *******************************************************/
337
338#define SB do {
339#define SE } while (0)
340
341#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
342 398
343static void 399static void
344load_perl (pTHX_ Coro__State c) 400load_perl (pTHX_ Coro__State c)
345{ 401{
346#define VAR(name,type) PL_ ## name = c->name; 402#define VAR(name,type) PL_ ## name = c->name;
347# include "state.h" 403# include "state.h"
348#undef VAR 404#undef VAR
349 405
350 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 406 GvSV (PL_defgv) = c->defsv;
351 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 407 GvAV (PL_defgv) = c->defav;
352 if (c->errsv) REPLACE_SV (ERRSV , c->errsv); 408 GvSV (PL_errgv) = c->errsv;
353 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh); 409 GvSV (irsgv) = c->irssv_sv;
354
355 if (c->irssv)
356 {
357 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
358 {
359 SvREFCNT_dec (c->irssv);
360 c->irssv = 0;
361 }
362 else
363 {
364 REPLACE_SV (PL_rs, c->irssv);
365 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
366 sv_setsv (c->irssv_sv, PL_rs);
367 }
368 }
369 410
370 { 411 {
371 dSP; 412 dSP;
372 CV *cv; 413 CV *cv;
373 414
374 /* now do the ugly restore mess */ 415 /* now do the ugly restore mess */
375 while ((cv = (CV *)POPs)) 416 while (expect_true (cv = (CV *)POPs))
376 { 417 {
377 put_padlist (aTHX_ cv); /* mark this padlist as available */ 418 put_padlist (aTHX_ cv); /* mark this padlist as available */
378 CvDEPTH (cv) = PTR2IV (POPs); 419 CvDEPTH (cv) = PTR2IV (POPs);
379 CvPADLIST (cv) = (AV *)POPs; 420 CvPADLIST (cv) = (AV *)POPs;
380 } 421 }
… …
395 /* 436 /*
396 * the worst thing you can imagine happens first - we have to save 437 * the worst thing you can imagine happens first - we have to save
397 * (and reinitialize) all cv's in the whole callchain :( 438 * (and reinitialize) all cv's in the whole callchain :(
398 */ 439 */
399 440
400 EXTEND (SP, 3 + 1);
401 PUSHs (Nullsv); 441 XPUSHs (Nullsv);
402 /* this loop was inspired by pp_caller */ 442 /* this loop was inspired by pp_caller */
403 for (;;) 443 for (;;)
404 { 444 {
405 while (cxix >= 0) 445 while (expect_true (cxix >= 0))
406 { 446 {
407 PERL_CONTEXT *cx = &ccstk[cxix--]; 447 PERL_CONTEXT *cx = &ccstk[cxix--];
408 448
409 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 449 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
410 { 450 {
411 CV *cv = cx->blk_sub.cv; 451 CV *cv = cx->blk_sub.cv;
412 452
413 if (CvDEPTH (cv)) 453 if (expect_true (CvDEPTH (cv)))
414 { 454 {
415 EXTEND (SP, 3); 455 EXTEND (SP, 3);
416 PUSHs ((SV *)CvPADLIST (cv)); 456 PUSHs ((SV *)CvPADLIST (cv));
417 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 457 PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
418 PUSHs ((SV *)cv); 458 PUSHs ((SV *)cv);
… …
421 get_padlist (aTHX_ cv); 461 get_padlist (aTHX_ cv);
422 } 462 }
423 } 463 }
424 } 464 }
425 465
426 if (top_si->si_type == PERLSI_MAIN) 466 if (expect_true (top_si->si_type == PERLSI_MAIN))
427 break; 467 break;
428 468
429 top_si = top_si->si_prev; 469 top_si = top_si->si_prev;
430 ccstk = top_si->si_cxstack; 470 ccstk = top_si->si_cxstack;
431 cxix = top_si->si_cxix; 471 cxix = top_si->si_cxix;
432 } 472 }
433 473
434 PUTBACK; 474 PUTBACK;
435 } 475 }
436 476
437 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 477 c->defav = GvAV (PL_defgv);
438 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 478 c->defsv = DEFSV;
439 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 479 c->errsv = ERRSV;
440 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 480 c->irssv_sv = GvSV (irsgv);
441 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
442 481
443#define VAR(name,type)c->name = PL_ ## name; 482#define VAR(name,type)c->name = PL_ ## name;
444# include "state.h" 483# include "state.h"
445#undef VAR 484#undef VAR
446} 485}
… …
455# define coro_init_stacks init_stacks 494# define coro_init_stacks init_stacks
456#else 495#else
457static void 496static void
458coro_init_stacks (pTHX) 497coro_init_stacks (pTHX)
459{ 498{
460 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 499 PL_curstackinfo = new_stackinfo(64, 6);
461 PL_curstackinfo->si_type = PERLSI_MAIN; 500 PL_curstackinfo->si_type = PERLSI_MAIN;
462 PL_curstack = PL_curstackinfo->si_stack; 501 PL_curstack = PL_curstackinfo->si_stack;
463 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 502 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
464 503
465 PL_stack_base = AvARRAY(PL_curstack); 504 PL_stack_base = AvARRAY(PL_curstack);
466 PL_stack_sp = PL_stack_base; 505 PL_stack_sp = PL_stack_base;
467 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 506 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
468 507
469 New(50,PL_tmps_stack,128,SV*); 508 New(50,PL_tmps_stack,64,SV*);
470 PL_tmps_floor = -1; 509 PL_tmps_floor = -1;
471 PL_tmps_ix = -1; 510 PL_tmps_ix = -1;
472 PL_tmps_max = 128; 511 PL_tmps_max = 64;
473 512
474 New(54,PL_markstack,32,I32); 513 New(54,PL_markstack,16,I32);
475 PL_markstack_ptr = PL_markstack; 514 PL_markstack_ptr = PL_markstack;
476 PL_markstack_max = PL_markstack + 32; 515 PL_markstack_max = PL_markstack + 16;
477 516
478#ifdef SET_MARK_OFFSET 517#ifdef SET_MARK_OFFSET
479 SET_MARK_OFFSET; 518 SET_MARK_OFFSET;
480#endif 519#endif
481 520
482 New(54,PL_scopestack,32,I32); 521 New(54,PL_scopestack,16,I32);
483 PL_scopestack_ix = 0; 522 PL_scopestack_ix = 0;
484 PL_scopestack_max = 32; 523 PL_scopestack_max = 16;
485 524
486 New(54,PL_savestack,64,ANY); 525 New(54,PL_savestack,64,ANY);
487 PL_savestack_ix = 0; 526 PL_savestack_ix = 0;
488 PL_savestack_max = 64; 527 PL_savestack_max = 64;
489 528
490#if !PERL_VERSION_ATLEAST (5,9,0) 529#if !PERL_VERSION_ATLEAST (5,9,0)
491 New(54,PL_retstack,16,OP*); 530 New(54,PL_retstack,4,OP*);
492 PL_retstack_ix = 0; 531 PL_retstack_ix = 0;
493 PL_retstack_max = 16; 532 PL_retstack_max = 4;
494#endif 533#endif
495} 534}
496#endif 535#endif
497 536
498/* 537/*
499 * destroy the stacks, the callchain etc... 538 * destroy the stacks, the callchain etc...
500 */ 539 */
501static void 540static void
502coro_destroy_stacks (pTHX) 541coro_destroy_stacks (pTHX)
503{ 542{
504 if (!IN_DESTRUCT)
505 {
506 /* restore all saved variables and stuff */
507 LEAVE_SCOPE (0);
508 assert (PL_tmps_floor == -1);
509
510 /* free all temporaries */
511 FREETMPS;
512 assert (PL_tmps_ix == -1);
513
514 /* unwind all extra stacks */
515 POPSTACK_TO (PL_mainstack);
516
517 /* unwind main stack */
518 dounwind (-1);
519 }
520
521 while (PL_curstackinfo->si_next) 543 while (PL_curstackinfo->si_next)
522 PL_curstackinfo = PL_curstackinfo->si_next; 544 PL_curstackinfo = PL_curstackinfo->si_next;
523 545
524 while (PL_curstackinfo) 546 while (PL_curstackinfo)
525 { 547 {
… …
541 Safefree (PL_retstack); 563 Safefree (PL_retstack);
542#endif 564#endif
543} 565}
544 566
545static size_t 567static size_t
546coro_rss (struct coro *coro) 568coro_rss (pTHX_ struct coro *coro)
547{ 569{
548 size_t rss = sizeof (coro); 570 size_t rss = sizeof (*coro);
549 571
550 if (coro->mainstack) 572 if (coro->mainstack)
551 { 573 {
574 if (coro->flags & CF_RUNNING)
575 {
576 #define VAR(name,type)coro->name = PL_ ## name;
577 # include "state.h"
578 #undef VAR
579 }
580
552 rss += sizeof (coro->curstackinfo); 581 rss += sizeof (coro->curstackinfo);
553 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); 582 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
554 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 583 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
555
556 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 584 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
557
558 rss += coro->tmps_max * sizeof (SV *); 585 rss += coro->tmps_max * sizeof (SV *);
559
560 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); 586 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
561
562 rss += coro->scopestack_max * sizeof (I32); 587 rss += coro->scopestack_max * sizeof (I32);
563
564 rss += coro->savestack_max * sizeof (ANY); 588 rss += coro->savestack_max * sizeof (ANY);
565 589
566#if !PERL_VERSION_ATLEAST (5,9,0) 590#if !PERL_VERSION_ATLEAST (5,9,0)
567 rss += coro->retstack_max * sizeof (OP *); 591 rss += coro->retstack_max * sizeof (OP *);
568#endif 592#endif
… …
572} 596}
573 597
574/** coroutine stack handling ************************************************/ 598/** coroutine stack handling ************************************************/
575 599
576static void 600static void
577setup_coro (pTHX_ struct coro *coro) 601coro_setup (pTHX_ struct coro *coro)
578{ 602{
579 /* 603 /*
580 * emulate part of the perl startup here. 604 * emulate part of the perl startup here.
581 */ 605 */
582 coro_init_stacks (aTHX); 606 coro_init_stacks (aTHX);
583 607
608 PL_runops = RUNOPS_DEFAULT;
584 PL_curcop = &PL_compiling; 609 PL_curcop = &PL_compiling;
585 PL_in_eval = EVAL_NULL; 610 PL_in_eval = EVAL_NULL;
586 PL_comppad = 0; 611 PL_comppad = 0;
587 PL_curpm = 0; 612 PL_curpm = 0;
613 PL_curpad = 0;
588 PL_localizing = 0; 614 PL_localizing = 0;
589 PL_dirty = 0; 615 PL_dirty = 0;
590 PL_restartop = 0; 616 PL_restartop = 0;
617
618 GvSV (PL_defgv) = newSV (0);
619 GvAV (PL_defgv) = coro->args; coro->args = 0;
620 GvSV (PL_errgv) = newSV (0);
621 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
622 PL_rs = newSVsv (GvSV (irsgv));
623 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
591 624
592 { 625 {
593 dSP; 626 dSP;
594 LOGOP myop; 627 LOGOP myop;
595 628
596 SvREFCNT_dec (GvAV (PL_defgv));
597 GvAV (PL_defgv) = coro->args; coro->args = 0;
598
599 Zero (&myop, 1, LOGOP); 629 Zero (&myop, 1, LOGOP);
600 myop.op_next = Nullop; 630 myop.op_next = Nullop;
601 myop.op_flags = OPf_WANT_VOID; 631 myop.op_flags = OPf_WANT_VOID;
602 632
603 PUSHMARK (SP); 633 PUSHMARK (SP);
604 XPUSHs (av_shift (GvAV (PL_defgv))); 634 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
605 PUTBACK; 635 PUTBACK;
606 PL_op = (OP *)&myop; 636 PL_op = (OP *)&myop;
607 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 637 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
608 SPAGAIN; 638 SPAGAIN;
609 } 639 }
610 640
611 ENTER; /* necessary e.g. for dounwind */ 641 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
642}
643
644static void
645coro_destroy (pTHX_ struct coro *coro)
646{
647 if (!IN_DESTRUCT)
648 {
649 /* restore all saved variables and stuff */
650 LEAVE_SCOPE (0);
651 assert (PL_tmps_floor == -1);
652
653 /* free all temporaries */
654 FREETMPS;
655 assert (PL_tmps_ix == -1);
656
657 /* unwind all extra stacks */
658 POPSTACK_TO (PL_mainstack);
659
660 /* unwind main stack */
661 dounwind (-1);
662 }
663
664 SvREFCNT_dec (GvSV (PL_defgv));
665 SvREFCNT_dec (GvAV (PL_defgv));
666 SvREFCNT_dec (GvSV (PL_errgv));
667 SvREFCNT_dec (PL_defoutgv);
668 SvREFCNT_dec (PL_rs);
669 SvREFCNT_dec (GvSV (irsgv));
670
671 SvREFCNT_dec (coro->saved_deffh);
672 SvREFCNT_dec (coro->throw);
673
674 coro_destroy_stacks (aTHX);
612} 675}
613 676
614static void 677static void
615free_coro_mortal (pTHX) 678free_coro_mortal (pTHX)
616{ 679{
617 if (coro_mortal) 680 if (expect_true (coro_mortal))
618 { 681 {
619 SvREFCNT_dec (coro_mortal); 682 SvREFCNT_dec (coro_mortal);
620 coro_mortal = 0; 683 coro_mortal = 0;
621 } 684 }
685}
686
687static int
688runops_trace (pTHX)
689{
690 COP *oldcop = 0;
691 int oldcxix = -2;
692 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
693 coro_cctx *cctx = coro->cctx;
694
695 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
696 {
697 PERL_ASYNC_CHECK ();
698
699 if (cctx->flags & CC_TRACE_ALL)
700 {
701 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
702 {
703 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
704 SV **bot, **top;
705 AV *av = newAV (); /* return values */
706 SV **cb;
707 dSP;
708
709 GV *gv = CvGV (cx->blk_sub.cv);
710 SV *fullname = sv_2mortal (newSV (0));
711 if (isGV (gv))
712 gv_efullname3 (fullname, gv, 0);
713
714 bot = PL_stack_base + cx->blk_oldsp + 1;
715 top = cx->blk_gimme == G_ARRAY ? SP + 1
716 : cx->blk_gimme == G_SCALAR ? bot + 1
717 : bot;
718
719 av_extend (av, top - bot);
720 while (bot < top)
721 av_push (av, SvREFCNT_inc (*bot++));
722
723 PL_runops = RUNOPS_DEFAULT;
724 ENTER;
725 SAVETMPS;
726 EXTEND (SP, 3);
727 PUSHMARK (SP);
728 PUSHs (&PL_sv_no);
729 PUSHs (fullname);
730 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
731 PUTBACK;
732 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
733 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
734 SPAGAIN;
735 FREETMPS;
736 LEAVE;
737 PL_runops = runops_trace;
738 }
739
740 if (oldcop != PL_curcop)
741 {
742 oldcop = PL_curcop;
743
744 if (PL_curcop != &PL_compiling)
745 {
746 SV **cb;
747
748 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
749 {
750 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
751
752 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
753 {
754 runops_proc_t old_runops = PL_runops;
755 dSP;
756 GV *gv = CvGV (cx->blk_sub.cv);
757 SV *fullname = sv_2mortal (newSV (0));
758
759 if (isGV (gv))
760 gv_efullname3 (fullname, gv, 0);
761
762 PL_runops = RUNOPS_DEFAULT;
763 ENTER;
764 SAVETMPS;
765 EXTEND (SP, 3);
766 PUSHMARK (SP);
767 PUSHs (&PL_sv_yes);
768 PUSHs (fullname);
769 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
770 PUTBACK;
771 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
772 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
773 SPAGAIN;
774 FREETMPS;
775 LEAVE;
776 PL_runops = runops_trace;
777 }
778
779 oldcxix = cxstack_ix;
780 }
781
782 if (cctx->flags & CC_TRACE_LINE)
783 {
784 dSP;
785
786 PL_runops = RUNOPS_DEFAULT;
787 ENTER;
788 SAVETMPS;
789 EXTEND (SP, 3);
790 PL_runops = RUNOPS_DEFAULT;
791 PUSHMARK (SP);
792 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
793 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
794 PUTBACK;
795 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
796 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
797 SPAGAIN;
798 FREETMPS;
799 LEAVE;
800 PL_runops = runops_trace;
801 }
802 }
803 }
804 }
805 }
806
807 TAINT_NOT;
808 return 0;
622} 809}
623 810
624/* inject a fake call to Coro::State::_cctx_init into the execution */ 811/* inject a fake call to Coro::State::_cctx_init into the execution */
625/* _cctx_init should be careful, as it could be called at almost any time */ 812/* _cctx_init should be careful, as it could be called at almost any time */
626/* during execution of a perl program */ 813/* during execution of a perl program */
627static void NOINLINE 814static void NOINLINE
628prepare_cctx (pTHX_ coro_cctx *cctx) 815prepare_cctx (pTHX_ coro_cctx *cctx)
629{ 816{
630 dSP; 817 dSP;
631 LOGOP myop; 818 LOGOP myop;
819
820 PL_top_env = &PL_start_env;
821
822 if (cctx->flags & CC_TRACE)
823 PL_runops = runops_trace;
632 824
633 Zero (&myop, 1, LOGOP); 825 Zero (&myop, 1, LOGOP);
634 myop.op_next = PL_op; 826 myop.op_next = PL_op;
635 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 827 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
636 828
… …
653 dTHX; 845 dTHX;
654 846
655 /* coro_run is the alternative tail of transfer(), so unlock here. */ 847 /* coro_run is the alternative tail of transfer(), so unlock here. */
656 UNLOCK; 848 UNLOCK;
657 849
658 PL_top_env = &PL_start_env; 850 /* we now skip the entersub that lead to transfer() */
851 PL_op = PL_op->op_next;
659 852
660 /* inject a fake subroutine call to cctx_init */ 853 /* inject a fake subroutine call to cctx_init */
661 prepare_cctx (aTHX_ (coro_cctx *)arg); 854 prepare_cctx (aTHX_ (coro_cctx *)arg);
662 855
663 /* somebody or something will hit me for both perl_run and PL_restartop */ 856 /* somebody or something will hit me for both perl_run and PL_restartop */
… …
697# if CORO_STACKGUARD 890# if CORO_STACKGUARD
698 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 891 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
699# endif 892# endif
700 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 893 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
701 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 894 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
702 cctx->mapped = 1; 895 cctx->flags |= CC_MAPPED;
703 } 896 }
704 else 897 else
705#endif 898#endif
706 { 899 {
707 cctx->ssize = coro_stacksize * (long)sizeof (long); 900 cctx->ssize = coro_stacksize * (long)sizeof (long);
… …
734#if CORO_USE_VALGRIND 927#if CORO_USE_VALGRIND
735 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 928 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
736#endif 929#endif
737 930
738#if HAVE_MMAP 931#if HAVE_MMAP
739 if (cctx->mapped) 932 if (cctx->flags & CC_MAPPED)
740 munmap (cctx->sptr, cctx->ssize); 933 munmap (cctx->sptr, cctx->ssize);
741 else 934 else
742#endif 935#endif
743 Safefree (cctx->sptr); 936 Safefree (cctx->sptr);
744 937
745 Safefree (cctx); 938 Safefree (cctx);
746} 939}
747 940
941/* wether this cctx should be destructed */
942#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
943
748static coro_cctx * 944static coro_cctx *
749cctx_get (pTHX) 945cctx_get (pTHX)
750{ 946{
751 while (cctx_first) 947 while (expect_true (cctx_first))
752 { 948 {
753 coro_cctx *cctx = cctx_first; 949 coro_cctx *cctx = cctx_first;
754 cctx_first = cctx->next; 950 cctx_first = cctx->next;
755 --cctx_idle; 951 --cctx_idle;
756 952
757 if (cctx->ssize >= coro_stacksize) 953 if (expect_true (!CCTX_EXPIRED (cctx)))
758 return cctx; 954 return cctx;
759 955
760 cctx_destroy (cctx); 956 cctx_destroy (cctx);
761 } 957 }
762 958
763 PL_op = PL_op->op_next;
764 return cctx_new (); 959 return cctx_new ();
765} 960}
766 961
767static void 962static void
768cctx_put (coro_cctx *cctx) 963cctx_put (coro_cctx *cctx)
769{ 964{
770 /* free another cctx if overlimit */ 965 /* free another cctx if overlimit */
771 if (cctx_idle >= MAX_IDLE_CCTX) 966 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
772 { 967 {
773 coro_cctx *first = cctx_first; 968 coro_cctx *first = cctx_first;
774 cctx_first = first->next; 969 cctx_first = first->next;
775 --cctx_idle; 970 --cctx_idle;
776 971
777 assert (!first->inuse);
778 cctx_destroy (first); 972 cctx_destroy (first);
779 } 973 }
780 974
781 ++cctx_idle; 975 ++cctx_idle;
782 cctx->next = cctx_first; 976 cctx->next = cctx_first;
783 cctx_first = cctx; 977 cctx_first = cctx;
784} 978}
785 979
786/** coroutine switching *****************************************************/ 980/** coroutine switching *****************************************************/
787 981
788/* never call directly, always through the coro_state_transfer global variable */ 982static void
983transfer_check (pTHX_ struct coro *prev, struct coro *next)
984{
985 if (expect_true (prev != next))
986 {
987 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
988 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
989
990 if (expect_false (next->flags & CF_RUNNING))
991 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
992
993 if (expect_false (next->flags & CF_DESTROYED))
994 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
995
996 if (expect_false (PL_lex_state != LEX_NOTPARSING))
997 croak ("Coro::State::transfer called while parsing, but this is not supported");
998 }
999}
1000
1001/* always use the TRANSFER macro */
789static void NOINLINE 1002static void NOINLINE
790transfer (pTHX_ struct coro *prev, struct coro *next) 1003transfer (pTHX_ struct coro *prev, struct coro *next)
791{ 1004{
792 dSTACKLEVEL; 1005 dSTACKLEVEL;
793 1006
794 /* sometimes transfer is only called to set idle_sp */ 1007 /* sometimes transfer is only called to set idle_sp */
795 if (!next) 1008 if (expect_false (!next))
796 { 1009 {
797 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1010 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
798 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1011 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
799 } 1012 }
800 else if (prev != next) 1013 else if (expect_true (prev != next))
801 { 1014 {
802 coro_cctx *prev__cctx; 1015 coro_cctx *prev__cctx;
803 1016
804 if (prev->flags & CF_NEW) 1017 if (expect_false (prev->flags & CF_NEW))
805 { 1018 {
806 /* create a new empty context */ 1019 /* create a new empty context */
807 Newz (0, prev->cctx, 1, coro_cctx); 1020 Newz (0, prev->cctx, 1, coro_cctx);
808 prev->cctx->inuse = 1;
809 prev->flags &= ~CF_NEW; 1021 prev->flags &= ~CF_NEW;
810 prev->flags |= CF_RUNNING; 1022 prev->flags |= CF_RUNNING;
811 } 1023 }
812 1024
813 /*TODO: must not croak here */
814 if (!prev->flags & CF_RUNNING)
815 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
816
817 if (next->flags & CF_RUNNING)
818 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
819
820 if (next->flags & CF_DESTROYED)
821 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
822
823 prev->flags &= ~CF_RUNNING; 1025 prev->flags &= ~CF_RUNNING;
824 next->flags |= CF_RUNNING; 1026 next->flags |= CF_RUNNING;
825 1027
826 LOCK; 1028 LOCK;
827 1029
828 if (next->flags & CF_NEW) 1030 if (expect_false (next->flags & CF_NEW))
829 { 1031 {
830 /* need to start coroutine */ 1032 /* need to start coroutine */
831 next->flags &= ~CF_NEW; 1033 next->flags &= ~CF_NEW;
832 /* first get rid of the old state */ 1034 /* first get rid of the old state */
833 save_perl (aTHX_ prev); 1035 save_perl (aTHX_ prev);
834 /* setup coroutine call */ 1036 /* setup coroutine call */
835 setup_coro (aTHX_ next); 1037 coro_setup (aTHX_ next);
836 /* need a new stack */
837 assert (!next->cctx);
838 } 1038 }
839 else 1039 else
840 { 1040 {
841 /* coroutine already started */ 1041 /* coroutine already started */
842 save_perl (aTHX_ prev); 1042 save_perl (aTHX_ prev);
… …
844 } 1044 }
845 1045
846 prev__cctx = prev->cctx; 1046 prev__cctx = prev->cctx;
847 1047
848 /* possibly "free" the cctx */ 1048 /* possibly "free" the cctx */
849 if (prev__cctx->idle_sp == STACKLEVEL) 1049 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
850 { 1050 {
851 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1051 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
852 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1052 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
853 1053
854 prev->cctx = 0; 1054 prev->cctx = 0;
855 1055
1056 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1057 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1058 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1059 next->cctx = cctx_get (aTHX);
1060
856 cctx_put (prev__cctx); 1061 cctx_put (prev__cctx);
857 prev__cctx->inuse = 0;
858 } 1062 }
859 1063
1064 ++next->usecount;
1065
860 if (!next->cctx) 1066 if (expect_true (!next->cctx))
861 {
862 next->cctx = cctx_get (aTHX); 1067 next->cctx = cctx_get (aTHX);
863 assert (!next->cctx->inuse);
864 next->cctx->inuse = 1;
865 }
866 1068
867 if (prev__cctx != next->cctx) 1069 if (expect_false (prev__cctx != next->cctx))
868 { 1070 {
869 prev__cctx->top_env = PL_top_env; 1071 prev__cctx->top_env = PL_top_env;
870 PL_top_env = next->cctx->top_env; 1072 PL_top_env = next->cctx->top_env;
871 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1073 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
872 } 1074 }
873 1075
874 free_coro_mortal (aTHX); 1076 free_coro_mortal (aTHX);
875 UNLOCK; 1077 UNLOCK;
1078
1079 if (expect_false (prev->throw || next->throw))
1080 {
1081 struct coro *coro = SvSTATE (coro_current);
1082
1083 if (coro->throw)
1084 {
1085 SV *exception = coro->throw;
1086 coro->throw = 0;
1087 sv_setsv (ERRSV, exception);
1088 croak (0);
1089 }
1090 }
876 } 1091 }
877} 1092}
878 1093
879struct transfer_args 1094struct transfer_args
880{ 1095{
881 struct coro *prev, *next; 1096 struct coro *prev, *next;
882}; 1097};
883 1098
884#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1099#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
1100#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
885 1101
886/** high level stuff ********************************************************/ 1102/** high level stuff ********************************************************/
887 1103
888static int 1104static int
889coro_state_destroy (pTHX_ struct coro *coro) 1105coro_state_destroy (pTHX_ struct coro *coro)
… …
906 1122
907 if (coro->mainstack && coro->mainstack != main_mainstack) 1123 if (coro->mainstack && coro->mainstack != main_mainstack)
908 { 1124 {
909 struct coro temp; 1125 struct coro temp;
910 1126
911 assert (!(coro->flags & CF_RUNNING));
912
913 Zero (&temp, 1, struct coro);
914 temp.save = CORO_SAVE_ALL;
915
916 if (coro->flags & CF_RUNNING) 1127 if (coro->flags & CF_RUNNING)
917 croak ("FATAL: tried to destroy currently running coroutine"); 1128 croak ("FATAL: tried to destroy currently running coroutine");
918 1129
919 save_perl (aTHX_ &temp); 1130 save_perl (aTHX_ &temp);
920 load_perl (aTHX_ coro); 1131 load_perl (aTHX_ coro);
921 1132
922 coro_destroy_stacks (aTHX); 1133 coro_destroy (aTHX_ coro);
923 1134
924 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1135 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
925 1136
926 coro->mainstack = 0; 1137 coro->mainstack = 0;
927 } 1138 }
… …
929 cctx_destroy (coro->cctx); 1140 cctx_destroy (coro->cctx);
930 SvREFCNT_dec (coro->args); 1141 SvREFCNT_dec (coro->args);
931 1142
932 if (coro->next) coro->next->prev = coro->prev; 1143 if (coro->next) coro->next->prev = coro->prev;
933 if (coro->prev) coro->prev->next = coro->next; 1144 if (coro->prev) coro->prev->next = coro->next;
934 if (coro == first) first = coro->next; 1145 if (coro == coro_first) coro_first = coro->next;
935 1146
936 return 1; 1147 return 1;
937} 1148}
938 1149
939static int 1150static int
… …
972#else 1183#else
973# define MGf_DUP 0 1184# define MGf_DUP 0
974#endif 1185#endif
975}; 1186};
976 1187
977static struct coro *
978SvSTATE_ (pTHX_ SV *coro)
979{
980 HV *stash;
981 MAGIC *mg;
982
983 if (SvROK (coro))
984 coro = SvRV (coro);
985
986 stash = SvSTASH (coro);
987 if (stash != coro_stash && stash != coro_state_stash)
988 {
989 /* very slow, but rare, check */
990 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
991 croak ("Coro::State object required");
992 }
993
994 mg = CORO_MAGIC (coro);
995 return (struct coro *)mg->mg_ptr;
996}
997
998#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
999
1000static void 1188static void
1001prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1189prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1002{ 1190{
1003 ta->prev = SvSTATE (prev_sv); 1191 ta->prev = SvSTATE (prev_sv);
1004 ta->next = SvSTATE (next_sv); 1192 ta->next = SvSTATE (next_sv);
1193 TRANSFER_CHECK (*ta);
1005} 1194}
1006 1195
1007static void 1196static void
1008api_transfer (SV *prev_sv, SV *next_sv) 1197api_transfer (SV *prev_sv, SV *next_sv)
1009{ 1198{
1010 dTHX; 1199 dTHX;
1011 struct transfer_args ta; 1200 struct transfer_args ta;
1012 1201
1013 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1202 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1014 TRANSFER (ta); 1203 TRANSFER (ta);
1015}
1016
1017static int
1018api_save (SV *coro_sv, int new_save)
1019{
1020 dTHX;
1021 struct coro *coro = SvSTATE (coro_sv);
1022 int old_save = coro->save;
1023
1024 if (new_save >= 0)
1025 coro->save = new_save;
1026
1027 return old_save;
1028} 1204}
1029 1205
1030/** Coro ********************************************************************/ 1206/** Coro ********************************************************************/
1031 1207
1032static void 1208static void
… …
1091 { 1267 {
1092 LOCK; 1268 LOCK;
1093 next_sv = coro_deq (aTHX_ PRIO_MIN); 1269 next_sv = coro_deq (aTHX_ PRIO_MIN);
1094 1270
1095 /* nothing to schedule: call the idle handler */ 1271 /* nothing to schedule: call the idle handler */
1096 if (!next_sv) 1272 if (expect_false (!next_sv))
1097 { 1273 {
1098 dSP; 1274 dSP;
1099 UNLOCK; 1275 UNLOCK;
1100 1276
1101 ENTER; 1277 ENTER;
… …
1111 } 1287 }
1112 1288
1113 ta->next = SvSTATE (next_sv); 1289 ta->next = SvSTATE (next_sv);
1114 1290
1115 /* cannot transfer to destroyed coros, skip and look for next */ 1291 /* cannot transfer to destroyed coros, skip and look for next */
1116 if (ta->next->flags & CF_DESTROYED) 1292 if (expect_false (ta->next->flags & CF_DESTROYED))
1117 { 1293 {
1118 UNLOCK; 1294 UNLOCK;
1119 SvREFCNT_dec (next_sv); 1295 SvREFCNT_dec (next_sv);
1120 /* coro_nready is already taken care of by destroy */ 1296 /* coro_nready is already taken care of by destroy */
1121 continue; 1297 continue;
… …
1126 break; 1302 break;
1127 } 1303 }
1128 1304
1129 /* free this only after the transfer */ 1305 /* free this only after the transfer */
1130 prev_sv = SvRV (coro_current); 1306 prev_sv = SvRV (coro_current);
1131 SvRV_set (coro_current, next_sv);
1132 ta->prev = SvSTATE (prev_sv); 1307 ta->prev = SvSTATE (prev_sv);
1133 1308 TRANSFER_CHECK (*ta);
1134 assert (ta->next->flags & CF_READY); 1309 assert (ta->next->flags & CF_READY);
1135 ta->next->flags &= ~CF_READY; 1310 ta->next->flags &= ~CF_READY;
1311 SvRV_set (coro_current, next_sv);
1136 1312
1137 LOCK; 1313 LOCK;
1138 free_coro_mortal (aTHX); 1314 free_coro_mortal (aTHX);
1139 coro_mortal = prev_sv; 1315 coro_mortal = prev_sv;
1140 UNLOCK; 1316 UNLOCK;
… …
1177 dTHX; 1353 dTHX;
1178 struct transfer_args ta; 1354 struct transfer_args ta;
1179 1355
1180 prepare_cede (aTHX_ &ta); 1356 prepare_cede (aTHX_ &ta);
1181 1357
1182 if (ta.prev != ta.next) 1358 if (expect_true (ta.prev != ta.next))
1183 { 1359 {
1184 TRANSFER (ta); 1360 TRANSFER (ta);
1185 return 1; 1361 return 1;
1186 } 1362 }
1187 else 1363 else
… …
1201 } 1377 }
1202 else 1378 else
1203 return 0; 1379 return 0;
1204} 1380}
1205 1381
1382static void
1383api_trace (SV *coro_sv, int flags)
1384{
1385 dTHX;
1386 struct coro *coro = SvSTATE (coro_sv);
1387
1388 if (flags & CC_TRACE)
1389 {
1390 if (!coro->cctx)
1391 coro->cctx = cctx_new ();
1392 else if (!(coro->cctx->flags & CC_TRACE))
1393 croak ("cannot enable tracing on coroutine with custom stack");
1394
1395 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1396 }
1397 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1398 {
1399 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1400
1401 if (coro->flags & CF_RUNNING)
1402 PL_runops = RUNOPS_DEFAULT;
1403 else
1404 coro->runops = RUNOPS_DEFAULT;
1405 }
1406}
1407
1206MODULE = Coro::State PACKAGE = Coro::State 1408MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1207 1409
1208PROTOTYPES: DISABLE 1410PROTOTYPES: DISABLE
1209 1411
1210BOOT: 1412BOOT:
1211{ 1413{
1212#ifdef USE_ITHREADS 1414#ifdef USE_ITHREADS
1213 MUTEX_INIT (&coro_mutex); 1415 MUTEX_INIT (&coro_mutex);
1214#endif 1416#endif
1215 BOOT_PAGESIZE; 1417 BOOT_PAGESIZE;
1216 1418
1419 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1420 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1421
1217 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1422 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1218 1423
1219 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1424 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1220 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 1425 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1221 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1222 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1223 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1224 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); 1426 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1225 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1427 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1226 1428
1227 main_mainstack = PL_mainstack; 1429 main_mainstack = PL_mainstack;
1228 main_top_env = PL_top_env; 1430 main_top_env = PL_top_env;
1229 1431
1230 while (main_top_env->je_prev) 1432 while (main_top_env->je_prev)
… …
1243 struct coro *coro; 1445 struct coro *coro;
1244 HV *hv; 1446 HV *hv;
1245 int i; 1447 int i;
1246 1448
1247 Newz (0, coro, 1, struct coro); 1449 Newz (0, coro, 1, struct coro);
1248 coro->args = newAV (); 1450 coro->args = newAV ();
1249 coro->save = CORO_SAVE_DEF;
1250 coro->flags = CF_NEW; 1451 coro->flags = CF_NEW;
1251 1452
1252 if (first) first->prev = coro; 1453 if (coro_first) coro_first->prev = coro;
1253 coro->next = first; 1454 coro->next = coro_first;
1254 first = coro; 1455 coro_first = coro;
1255 1456
1256 coro->hv = hv = newHV (); 1457 coro->hv = hv = newHV ();
1257 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1458 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1258 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1459 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1259 1460
1461 av_extend (coro->args, items - 1);
1260 for (i = 1; i < items; i++) 1462 for (i = 1; i < items; i++)
1261 av_push (coro->args, newSVsv (ST (i))); 1463 av_push (coro->args, newSVsv (ST (i)));
1262} 1464}
1263 OUTPUT: 1465 OUTPUT:
1264 RETVAL 1466 RETVAL
1265 1467
1266int 1468# these not obviously related functions are all rolled into the same xs
1267save (SV *coro, int new_save = -1) 1469# function to increase chances that they all will call transfer with the same
1268 CODE: 1470# stack offset
1269 RETVAL = api_save (coro, new_save);
1270 OUTPUT:
1271 RETVAL
1272
1273int
1274save_also (SV *coro_sv, int save_also)
1275 CODE:
1276{
1277 struct coro *coro = SvSTATE (coro_sv);
1278 RETVAL = coro->save;
1279 coro->save |= save_also;
1280}
1281 OUTPUT:
1282 RETVAL
1283
1284void 1471void
1285_set_stacklevel (...) 1472_set_stacklevel (...)
1286 ALIAS: 1473 ALIAS:
1287 Coro::State::transfer = 1 1474 Coro::State::transfer = 1
1288 Coro::schedule = 2 1475 Coro::schedule = 2
… …
1322 } 1509 }
1323 1510
1324 BARRIER; 1511 BARRIER;
1325 TRANSFER (ta); 1512 TRANSFER (ta);
1326 1513
1327 if (GIMME_V != G_VOID && ta.next != ta.prev) 1514 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1328 XSRETURN_YES; 1515 XSRETURN_YES;
1329} 1516}
1330 1517
1331bool 1518bool
1332_destroy (SV *coro_sv) 1519_destroy (SV *coro_sv)
… …
1368void 1555void
1369list () 1556list ()
1370 PPCODE: 1557 PPCODE:
1371{ 1558{
1372 struct coro *coro; 1559 struct coro *coro;
1373 for (coro = first; coro; coro = coro->next) 1560 for (coro = coro_first; coro; coro = coro->next)
1374 if (coro->hv) 1561 if (coro->hv)
1375 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 1562 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1376} 1563}
1377 1564
1378void 1565void
1379_eval (Coro::State coro, SV *coderef) 1566call (Coro::State coro, SV *coderef)
1567 ALIAS:
1568 eval = 1
1380 CODE: 1569 CODE:
1381{ 1570{
1382 if (coro->mainstack) 1571 if (coro->mainstack)
1383 { 1572 {
1384 struct coro temp; 1573 struct coro temp;
1385 Zero (&temp, 1, struct coro); 1574 Zero (&temp, 1, struct coro);
1386 temp.save = CORO_SAVE_ALL;
1387 1575
1388 if (!(coro->flags & CF_RUNNING)) 1576 if (!(coro->flags & CF_RUNNING))
1389 { 1577 {
1390 save_perl (aTHX_ &temp); 1578 save_perl (aTHX_ &temp);
1391 load_perl (aTHX_ coro); 1579 load_perl (aTHX_ coro);
… …
1395 dSP; 1583 dSP;
1396 ENTER; 1584 ENTER;
1397 SAVETMPS; 1585 SAVETMPS;
1398 PUSHMARK (SP); 1586 PUSHMARK (SP);
1399 PUTBACK; 1587 PUTBACK;
1588 if (ix)
1589 eval_sv (coderef, 0);
1590 else
1400 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1591 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1401 SPAGAIN; 1592 SPAGAIN;
1402 FREETMPS; 1593 FREETMPS;
1403 LEAVE; 1594 LEAVE;
1404 PUTBACK; 1595 PUTBACK;
1405 } 1596 }
… …
1409 save_perl (aTHX_ coro); 1600 save_perl (aTHX_ coro);
1410 load_perl (aTHX_ &temp); 1601 load_perl (aTHX_ &temp);
1411 } 1602 }
1412 } 1603 }
1413} 1604}
1414 1605
1415SV * 1606SV *
1416is_ready (Coro::State coro) 1607is_ready (Coro::State coro)
1417 PROTOTYPE: $ 1608 PROTOTYPE: $
1418 ALIAS: 1609 ALIAS:
1419 is_ready = CF_READY 1610 is_ready = CF_READY
… …
1423 CODE: 1614 CODE:
1424 RETVAL = boolSV (coro->flags & ix); 1615 RETVAL = boolSV (coro->flags & ix);
1425 OUTPUT: 1616 OUTPUT:
1426 RETVAL 1617 RETVAL
1427 1618
1619void
1620api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1621
1622SV *
1623has_stack (Coro::State coro)
1624 PROTOTYPE: $
1625 CODE:
1626 RETVAL = boolSV (!!coro->cctx);
1627 OUTPUT:
1628 RETVAL
1629
1630int
1631is_traced (Coro::State coro)
1632 PROTOTYPE: $
1633 CODE:
1634 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1635 OUTPUT:
1636 RETVAL
1637
1428IV 1638IV
1429rss (Coro::State coro) 1639rss (Coro::State coro)
1430 PROTOTYPE: $ 1640 PROTOTYPE: $
1641 ALIAS:
1642 usecount = 1
1431 CODE: 1643 CODE:
1432 RETVAL = coro_rss (coro); 1644 switch (ix)
1645 {
1646 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1647 case 1: RETVAL = coro->usecount; break;
1648 }
1433 OUTPUT: 1649 OUTPUT:
1434 RETVAL 1650 RETVAL
1435 1651
1436 1652
1437MODULE = Coro::State PACKAGE = Coro 1653MODULE = Coro::State PACKAGE = Coro
1438 1654
1439BOOT: 1655BOOT:
1440{ 1656{
1441 int i; 1657 int i;
1658
1659 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1660 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1661 av_async_pool = get_av ("Coro::async_pool", TRUE);
1662
1663 coro_current = get_sv ("Coro::current", FALSE);
1664 SvREADONLY_on (coro_current);
1442 1665
1443 coro_stash = gv_stashpv ("Coro", TRUE); 1666 coro_stash = gv_stashpv ("Coro", TRUE);
1444 1667
1445 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1668 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1446 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1669 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1447 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1670 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1448 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1671 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1449 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1672 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1450 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1673 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1451 1674
1452 coro_current = get_sv ("Coro::current", FALSE);
1453 SvREADONLY_on (coro_current);
1454
1455 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1675 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1456 coro_ready[i] = newAV (); 1676 coro_ready[i] = newAV ();
1457 1677
1458 { 1678 {
1459 SV *sv = perl_get_sv("Coro::API", 1); 1679 SV *sv = perl_get_sv("Coro::API", 1);
1460 1680
1461 coroapi.schedule = api_schedule; 1681 coroapi.schedule = api_schedule;
1462 coroapi.save = api_save;
1463 coroapi.cede = api_cede; 1682 coroapi.cede = api_cede;
1464 coroapi.cede_notself = api_cede_notself; 1683 coroapi.cede_notself = api_cede_notself;
1465 coroapi.ready = api_ready; 1684 coroapi.ready = api_ready;
1466 coroapi.is_ready = api_is_ready; 1685 coroapi.is_ready = api_is_ready;
1467 coroapi.nready = &coro_nready; 1686 coroapi.nready = &coro_nready;
… …
1516 CODE: 1735 CODE:
1517 RETVAL = coro_nready; 1736 RETVAL = coro_nready;
1518 OUTPUT: 1737 OUTPUT:
1519 RETVAL 1738 RETVAL
1520 1739
1740void
1741throw (Coro::State self, SV *throw = &PL_sv_undef)
1742 PROTOTYPE: $;$
1743 CODE:
1744 SvREFCNT_dec (self->throw);
1745 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1746
1747# for async_pool speedup
1748void
1749_pool_1 (SV *cb)
1750 CODE:
1751{
1752 struct coro *coro = SvSTATE (coro_current);
1753 HV *hv = (HV *)SvRV (coro_current);
1754 AV *defav = GvAV (PL_defgv);
1755 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1756 AV *invoke_av;
1757 int i, len;
1758
1759 if (!invoke)
1760 croak ("\3async_pool terminate\2\n");
1761
1762 SvREFCNT_dec (coro->saved_deffh);
1763 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1764
1765 hv_store (hv, "desc", sizeof ("desc") - 1,
1766 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1767
1768 invoke_av = (AV *)SvRV (invoke);
1769 len = av_len (invoke_av);
1770
1771 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1772
1773 if (len > 0)
1774 {
1775 av_fill (defav, len - 1);
1776 for (i = 0; i < len; ++i)
1777 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1778 }
1779
1780 SvREFCNT_dec (invoke);
1781}
1782
1783void
1784_pool_2 (SV *cb)
1785 CODE:
1786{
1787 struct coro *coro = SvSTATE (coro_current);
1788
1789 sv_setsv (cb, &PL_sv_undef);
1790
1791 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1792 coro->saved_deffh = 0;
1793
1794 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1795 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1796 croak ("\3async_pool terminate\2\n");
1797
1798 av_clear (GvAV (PL_defgv));
1799 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1800 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1801
1802 coro->prio = 0;
1803
1804 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1805 api_trace (coro_current, 0);
1806
1807 av_push (av_async_pool, newSVsv (coro_current));
1808}
1809
1810
1521MODULE = Coro::State PACKAGE = Coro::AIO 1811MODULE = Coro::State PACKAGE = Coro::AIO
1522 1812
1523SV * 1813SV *
1524_get_state () 1814_get_state ()
1525 CODE: 1815 CODE:

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