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Comparing Coro/Coro/State.xs (file contents):
Revision 1.151 by root, Wed Sep 19 21:39:15 2007 UTC vs.
Revision 1.194 by root, Sat Oct 6 00:08:04 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 {
… …
540#if !PERL_VERSION_ATLEAST (5,9,0) 562#if !PERL_VERSION_ATLEAST (5,9,0)
541 Safefree (PL_retstack); 563 Safefree (PL_retstack);
542#endif 564#endif
543} 565}
544 566
567static size_t
568coro_rss (pTHX_ struct coro *coro)
569{
570 size_t rss = sizeof (*coro);
571
572 if (coro->mainstack)
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
581 rss += sizeof (coro->curstackinfo);
582 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
583 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
584 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
585 rss += coro->tmps_max * sizeof (SV *);
586 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
587 rss += coro->scopestack_max * sizeof (I32);
588 rss += coro->savestack_max * sizeof (ANY);
589
590#if !PERL_VERSION_ATLEAST (5,9,0)
591 rss += coro->retstack_max * sizeof (OP *);
592#endif
593 }
594
595 return rss;
596}
597
545/** coroutine stack handling ************************************************/ 598/** coroutine stack handling ************************************************/
546 599
547static void 600static void
548setup_coro (pTHX_ struct coro *coro) 601coro_setup (pTHX_ struct coro *coro)
549{ 602{
550 /* 603 /*
551 * emulate part of the perl startup here. 604 * emulate part of the perl startup here.
552 */ 605 */
553 coro_init_stacks (aTHX); 606 coro_init_stacks (aTHX);
554 607
608 PL_runops = RUNOPS_DEFAULT;
555 PL_curcop = &PL_compiling; 609 PL_curcop = &PL_compiling;
556 PL_in_eval = EVAL_NULL; 610 PL_in_eval = EVAL_NULL;
557 PL_comppad = 0; 611 PL_comppad = 0;
558 PL_curpm = 0; 612 PL_curpm = 0;
559 PL_localizing = 0; 613 PL_localizing = 0;
560 PL_dirty = 0; 614 PL_dirty = 0;
561 PL_restartop = 0; 615 PL_restartop = 0;
616
617 GvSV (PL_defgv) = newSV (0);
618 GvAV (PL_defgv) = coro->args; coro->args = 0;
619 GvSV (PL_errgv) = newSV (0);
620 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
621 PL_rs = newSVsv (GvSV (irsgv));
622 PL_defoutgv = SvREFCNT_inc (stdoutgv);
623
624 ENTER; /* necessary e.g. for dounwind */
562 625
563 { 626 {
564 dSP; 627 dSP;
565 LOGOP myop; 628 LOGOP myop;
566 629
567 SvREFCNT_dec (GvAV (PL_defgv));
568 GvAV (PL_defgv) = coro->args; coro->args = 0;
569
570 Zero (&myop, 1, LOGOP); 630 Zero (&myop, 1, LOGOP);
571 myop.op_next = Nullop; 631 myop.op_next = Nullop;
572 myop.op_flags = OPf_WANT_VOID; 632 myop.op_flags = OPf_WANT_VOID;
573 633
574 PUSHMARK (SP); 634 PUSHMARK (SP);
575 XPUSHs (av_shift (GvAV (PL_defgv))); 635 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
576 PUTBACK; 636 PUTBACK;
577 PL_op = (OP *)&myop; 637 PL_op = (OP *)&myop;
578 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 638 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
579 SPAGAIN; 639 SPAGAIN;
580 } 640 }
641}
581 642
582 ENTER; /* necessary e.g. for dounwind */ 643static void
644coro_destroy (pTHX_ struct coro *coro)
645{
646 if (!IN_DESTRUCT)
647 {
648 /* restore all saved variables and stuff */
649 LEAVE_SCOPE (0);
650 assert (PL_tmps_floor == -1);
651
652 /* free all temporaries */
653 FREETMPS;
654 assert (PL_tmps_ix == -1);
655
656 /* unwind all extra stacks */
657 POPSTACK_TO (PL_mainstack);
658
659 /* unwind main stack */
660 dounwind (-1);
661 }
662
663 SvREFCNT_dec (GvSV (PL_defgv));
664 SvREFCNT_dec (GvAV (PL_defgv));
665 SvREFCNT_dec (GvSV (PL_errgv));
666 SvREFCNT_dec (PL_defoutgv);
667 SvREFCNT_dec (PL_rs);
668 SvREFCNT_dec (GvSV (irsgv));
669
670 SvREFCNT_dec (coro->saved_deffh);
671 //SvREFCNT_dec (coro->throw);
672
673 coro_destroy_stacks (aTHX);
583} 674}
584 675
585static void 676static void
586free_coro_mortal (pTHX) 677free_coro_mortal (pTHX)
587{ 678{
588 if (coro_mortal) 679 if (expect_true (coro_mortal))
589 { 680 {
590 SvREFCNT_dec (coro_mortal); 681 SvREFCNT_dec (coro_mortal);
591 coro_mortal = 0; 682 coro_mortal = 0;
592 } 683 }
684}
685
686static int
687runops_trace (pTHX)
688{
689 COP *oldcop = 0;
690 int oldcxix = -2;
691 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
692 coro_cctx *cctx = coro->cctx;
693
694 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
695 {
696 PERL_ASYNC_CHECK ();
697
698 if (cctx->flags & CC_TRACE_ALL)
699 {
700 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
701 {
702 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
703 SV **bot, **top;
704 AV *av = newAV (); /* return values */
705 SV **cb;
706 dSP;
707
708 GV *gv = CvGV (cx->blk_sub.cv);
709 SV *fullname = sv_2mortal (newSV (0));
710 if (isGV (gv))
711 gv_efullname3 (fullname, gv, 0);
712
713 bot = PL_stack_base + cx->blk_oldsp + 1;
714 top = cx->blk_gimme == G_ARRAY ? SP + 1
715 : cx->blk_gimme == G_SCALAR ? bot + 1
716 : bot;
717
718 av_extend (av, top - bot);
719 while (bot < top)
720 av_push (av, SvREFCNT_inc (*bot++));
721
722 PL_runops = RUNOPS_DEFAULT;
723 ENTER;
724 SAVETMPS;
725 EXTEND (SP, 3);
726 PUSHMARK (SP);
727 PUSHs (&PL_sv_no);
728 PUSHs (fullname);
729 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
730 PUTBACK;
731 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
732 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
733 SPAGAIN;
734 FREETMPS;
735 LEAVE;
736 PL_runops = runops_trace;
737 }
738
739 if (oldcop != PL_curcop)
740 {
741 oldcop = PL_curcop;
742
743 if (PL_curcop != &PL_compiling)
744 {
745 SV **cb;
746
747 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
748 {
749 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
750
751 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
752 {
753 runops_proc_t old_runops = PL_runops;
754 dSP;
755 GV *gv = CvGV (cx->blk_sub.cv);
756 SV *fullname = sv_2mortal (newSV (0));
757
758 if (isGV (gv))
759 gv_efullname3 (fullname, gv, 0);
760
761 PL_runops = RUNOPS_DEFAULT;
762 ENTER;
763 SAVETMPS;
764 EXTEND (SP, 3);
765 PUSHMARK (SP);
766 PUSHs (&PL_sv_yes);
767 PUSHs (fullname);
768 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
769 PUTBACK;
770 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
771 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
772 SPAGAIN;
773 FREETMPS;
774 LEAVE;
775 PL_runops = runops_trace;
776 }
777
778 oldcxix = cxstack_ix;
779 }
780
781 if (cctx->flags & CC_TRACE_LINE)
782 {
783 dSP;
784
785 PL_runops = RUNOPS_DEFAULT;
786 ENTER;
787 SAVETMPS;
788 EXTEND (SP, 3);
789 PL_runops = RUNOPS_DEFAULT;
790 PUSHMARK (SP);
791 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
792 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
793 PUTBACK;
794 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
795 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
796 SPAGAIN;
797 FREETMPS;
798 LEAVE;
799 PL_runops = runops_trace;
800 }
801 }
802 }
803 }
804 }
805
806 TAINT_NOT;
807 return 0;
593} 808}
594 809
595/* inject a fake call to Coro::State::_cctx_init into the execution */ 810/* inject a fake call to Coro::State::_cctx_init into the execution */
596/* _cctx_init should be careful, as it could be called at almost any time */ 811/* _cctx_init should be careful, as it could be called at almost any time */
597/* during execution of a perl program */ 812/* during execution of a perl program */
598static void NOINLINE 813static void NOINLINE
599prepare_cctx (pTHX_ coro_cctx *cctx) 814prepare_cctx (pTHX_ coro_cctx *cctx)
600{ 815{
601 dSP; 816 dSP;
602 LOGOP myop; 817 LOGOP myop;
818
819 PL_top_env = &PL_start_env;
820
821 if (cctx->flags & CC_TRACE)
822 PL_runops = runops_trace;
603 823
604 Zero (&myop, 1, LOGOP); 824 Zero (&myop, 1, LOGOP);
605 myop.op_next = PL_op; 825 myop.op_next = PL_op;
606 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 826 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
607 827
… …
624 dTHX; 844 dTHX;
625 845
626 /* coro_run is the alternative tail of transfer(), so unlock here. */ 846 /* coro_run is the alternative tail of transfer(), so unlock here. */
627 UNLOCK; 847 UNLOCK;
628 848
629 PL_top_env = &PL_start_env; 849 /* we now skip the entersub that lead to transfer() */
850 PL_op = PL_op->op_next;
630 851
631 /* inject a fake subroutine call to cctx_init */ 852 /* inject a fake subroutine call to cctx_init */
632 prepare_cctx (aTHX_ (coro_cctx *)arg); 853 prepare_cctx (aTHX_ (coro_cctx *)arg);
633 854
634 /* somebody or something will hit me for both perl_run and PL_restartop */ 855 /* somebody or something will hit me for both perl_run and PL_restartop */
… …
668# if CORO_STACKGUARD 889# if CORO_STACKGUARD
669 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 890 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
670# endif 891# endif
671 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 892 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
672 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 893 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
673 cctx->mapped = 1; 894 cctx->flags |= CC_MAPPED;
674 } 895 }
675 else 896 else
676#endif 897#endif
677 { 898 {
678 cctx->ssize = coro_stacksize * (long)sizeof (long); 899 cctx->ssize = coro_stacksize * (long)sizeof (long);
… …
705#if CORO_USE_VALGRIND 926#if CORO_USE_VALGRIND
706 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 927 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
707#endif 928#endif
708 929
709#if HAVE_MMAP 930#if HAVE_MMAP
710 if (cctx->mapped) 931 if (cctx->flags & CC_MAPPED)
711 munmap (cctx->sptr, cctx->ssize); 932 munmap (cctx->sptr, cctx->ssize);
712 else 933 else
713#endif 934#endif
714 Safefree (cctx->sptr); 935 Safefree (cctx->sptr);
715 936
716 Safefree (cctx); 937 Safefree (cctx);
717} 938}
718 939
940/* wether this cctx should be destructed */
941#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
942
719static coro_cctx * 943static coro_cctx *
720cctx_get (pTHX) 944cctx_get (pTHX)
721{ 945{
722 while (cctx_first) 946 while (expect_true (cctx_first))
723 { 947 {
724 coro_cctx *cctx = cctx_first; 948 coro_cctx *cctx = cctx_first;
725 cctx_first = cctx->next; 949 cctx_first = cctx->next;
726 --cctx_idle; 950 --cctx_idle;
727 951
728 if (cctx->ssize >= coro_stacksize) 952 if (expect_true (!CCTX_EXPIRED (cctx)))
729 return cctx; 953 return cctx;
730 954
731 cctx_destroy (cctx); 955 cctx_destroy (cctx);
732 } 956 }
733 957
734 PL_op = PL_op->op_next;
735 return cctx_new (); 958 return cctx_new ();
736} 959}
737 960
738static void 961static void
739cctx_put (coro_cctx *cctx) 962cctx_put (coro_cctx *cctx)
740{ 963{
741 /* free another cctx if overlimit */ 964 /* free another cctx if overlimit */
742 if (cctx_idle >= MAX_IDLE_CCTX) 965 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
743 { 966 {
744 coro_cctx *first = cctx_first; 967 coro_cctx *first = cctx_first;
745 cctx_first = first->next; 968 cctx_first = first->next;
746 --cctx_idle; 969 --cctx_idle;
747 970
748 assert (!first->inuse);
749 cctx_destroy (first); 971 cctx_destroy (first);
750 } 972 }
751 973
752 ++cctx_idle; 974 ++cctx_idle;
753 cctx->next = cctx_first; 975 cctx->next = cctx_first;
754 cctx_first = cctx; 976 cctx_first = cctx;
755} 977}
756 978
757/** coroutine switching *****************************************************/ 979/** coroutine switching *****************************************************/
758 980
759/* never call directly, always through the coro_state_transfer global variable */ 981static void
982transfer_check (pTHX_ struct coro *prev, struct coro *next)
983{
984 if (expect_true (prev != next))
985 {
986 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
987 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
988
989 if (expect_false (next->flags & CF_RUNNING))
990 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
991
992 if (expect_false (next->flags & CF_DESTROYED))
993 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
994
995 if (expect_false (PL_lex_state != LEX_NOTPARSING))
996 croak ("Coro::State::transfer called while parsing, but this is not supported");
997 }
998}
999
1000/* always use the TRANSFER macro */
760static void NOINLINE 1001static void NOINLINE
761transfer (pTHX_ struct coro *prev, struct coro *next) 1002transfer (pTHX_ struct coro *prev, struct coro *next)
762{ 1003{
763 dSTACKLEVEL; 1004 dSTACKLEVEL;
764 1005
765 /* sometimes transfer is only called to set idle_sp */ 1006 /* sometimes transfer is only called to set idle_sp */
766 if (!next) 1007 if (expect_false (!next))
767 { 1008 {
768 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1009 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
769 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1010 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
770 } 1011 }
771 else if (prev != next) 1012 else if (expect_true (prev != next))
772 { 1013 {
773 coro_cctx *prev__cctx; 1014 coro_cctx *prev__cctx;
774 1015
775 if (prev->flags & CF_NEW) 1016 if (expect_false (prev->flags & CF_NEW))
776 { 1017 {
777 /* create a new empty context */ 1018 /* create a new empty context */
778 Newz (0, prev->cctx, 1, coro_cctx); 1019 Newz (0, prev->cctx, 1, coro_cctx);
779 prev->cctx->inuse = 1;
780 prev->flags &= ~CF_NEW; 1020 prev->flags &= ~CF_NEW;
781 prev->flags |= CF_RUNNING; 1021 prev->flags |= CF_RUNNING;
782 } 1022 }
783 1023
784 /*TODO: must not croak here */
785 if (!prev->flags & CF_RUNNING)
786 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
787
788 if (next->flags & CF_RUNNING)
789 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
790
791 if (next->flags & CF_DESTROYED)
792 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
793
794 prev->flags &= ~CF_RUNNING; 1024 prev->flags &= ~CF_RUNNING;
795 next->flags |= CF_RUNNING; 1025 next->flags |= CF_RUNNING;
796 1026
797 LOCK; 1027 LOCK;
798 1028
799 if (next->flags & CF_NEW) 1029 if (expect_false (next->flags & CF_NEW))
800 { 1030 {
801 /* need to start coroutine */ 1031 /* need to start coroutine */
802 next->flags &= ~CF_NEW; 1032 next->flags &= ~CF_NEW;
803 /* first get rid of the old state */ 1033 /* first get rid of the old state */
804 save_perl (aTHX_ prev); 1034 save_perl (aTHX_ prev);
805 /* setup coroutine call */ 1035 /* setup coroutine call */
806 setup_coro (aTHX_ next); 1036 coro_setup (aTHX_ next);
807 /* need a new stack */
808 assert (!next->cctx);
809 } 1037 }
810 else 1038 else
811 { 1039 {
812 /* coroutine already started */ 1040 /* coroutine already started */
813 save_perl (aTHX_ prev); 1041 save_perl (aTHX_ prev);
… …
815 } 1043 }
816 1044
817 prev__cctx = prev->cctx; 1045 prev__cctx = prev->cctx;
818 1046
819 /* possibly "free" the cctx */ 1047 /* possibly "free" the cctx */
820 if (prev__cctx->idle_sp == STACKLEVEL) 1048 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
821 { 1049 {
822 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1050 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
823 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1051 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
824 1052
825 prev->cctx = 0; 1053 prev->cctx = 0;
826 1054
1055 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1056 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1057 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1058 next->cctx = cctx_get (aTHX);
1059
827 cctx_put (prev__cctx); 1060 cctx_put (prev__cctx);
828 prev__cctx->inuse = 0;
829 } 1061 }
830 1062
1063 ++next->usecount;
1064
831 if (!next->cctx) 1065 if (expect_true (!next->cctx))
832 {
833 next->cctx = cctx_get (aTHX); 1066 next->cctx = cctx_get (aTHX);
834 assert (!next->cctx->inuse);
835 next->cctx->inuse = 1;
836 }
837 1067
838 if (prev__cctx != next->cctx) 1068 if (expect_false (prev__cctx != next->cctx))
839 { 1069 {
840 prev__cctx->top_env = PL_top_env; 1070 prev__cctx->top_env = PL_top_env;
841 PL_top_env = next->cctx->top_env; 1071 PL_top_env = next->cctx->top_env;
842 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1072 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
843 } 1073 }
… …
851{ 1081{
852 struct coro *prev, *next; 1082 struct coro *prev, *next;
853}; 1083};
854 1084
855#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1085#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
1086#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
856 1087
857/** high level stuff ********************************************************/ 1088/** high level stuff ********************************************************/
858 1089
859static int 1090static int
860coro_state_destroy (pTHX_ struct coro *coro) 1091coro_state_destroy (pTHX_ struct coro *coro)
… …
877 1108
878 if (coro->mainstack && coro->mainstack != main_mainstack) 1109 if (coro->mainstack && coro->mainstack != main_mainstack)
879 { 1110 {
880 struct coro temp; 1111 struct coro temp;
881 1112
882 assert (!(coro->flags & CF_RUNNING));
883
884 Zero (&temp, 1, struct coro);
885 temp.save = CORO_SAVE_ALL;
886
887 if (coro->flags & CF_RUNNING) 1113 if (coro->flags & CF_RUNNING)
888 croak ("FATAL: tried to destroy currently running coroutine"); 1114 croak ("FATAL: tried to destroy currently running coroutine");
889 1115
890 save_perl (aTHX_ &temp); 1116 save_perl (aTHX_ &temp);
891 load_perl (aTHX_ coro); 1117 load_perl (aTHX_ coro);
892 1118
893 coro_destroy_stacks (aTHX); 1119 coro_destroy (aTHX_ coro);
894 1120
895 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1121 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
896 1122
897 coro->mainstack = 0; 1123 coro->mainstack = 0;
898 } 1124 }
… …
900 cctx_destroy (coro->cctx); 1126 cctx_destroy (coro->cctx);
901 SvREFCNT_dec (coro->args); 1127 SvREFCNT_dec (coro->args);
902 1128
903 if (coro->next) coro->next->prev = coro->prev; 1129 if (coro->next) coro->next->prev = coro->prev;
904 if (coro->prev) coro->prev->next = coro->next; 1130 if (coro->prev) coro->prev->next = coro->next;
905 if (coro == first) first = coro->next; 1131 if (coro == coro_first) coro_first = coro->next;
906 1132
907 return 1; 1133 return 1;
908} 1134}
909 1135
910static int 1136static int
… …
943#else 1169#else
944# define MGf_DUP 0 1170# define MGf_DUP 0
945#endif 1171#endif
946}; 1172};
947 1173
948static struct coro *
949SvSTATE_ (pTHX_ SV *coro)
950{
951 HV *stash;
952 MAGIC *mg;
953
954 if (SvROK (coro))
955 coro = SvRV (coro);
956
957 stash = SvSTASH (coro);
958 if (stash != coro_stash && stash != coro_state_stash)
959 {
960 /* very slow, but rare, check */
961 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
962 croak ("Coro::State object required");
963 }
964
965 mg = CORO_MAGIC (coro);
966 return (struct coro *)mg->mg_ptr;
967}
968
969#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
970
971static void 1174static void
972prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1175prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
973{ 1176{
974 ta->prev = SvSTATE (prev_sv); 1177 ta->prev = SvSTATE (prev_sv);
975 ta->next = SvSTATE (next_sv); 1178 ta->next = SvSTATE (next_sv);
1179 TRANSFER_CHECK (*ta);
976} 1180}
977 1181
978static void 1182static void
979api_transfer (SV *prev_sv, SV *next_sv) 1183api_transfer (SV *prev_sv, SV *next_sv)
980{ 1184{
981 dTHX; 1185 dTHX;
982 struct transfer_args ta; 1186 struct transfer_args ta;
983 1187
984 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1188 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
985 TRANSFER (ta); 1189 TRANSFER (ta);
986}
987
988static int
989api_save (SV *coro_sv, int new_save)
990{
991 dTHX;
992 struct coro *coro = SvSTATE (coro_sv);
993 int old_save = coro->save;
994
995 if (new_save >= 0)
996 coro->save = new_save;
997
998 return old_save;
999} 1190}
1000 1191
1001/** Coro ********************************************************************/ 1192/** Coro ********************************************************************/
1002 1193
1003static void 1194static void
… …
1062 { 1253 {
1063 LOCK; 1254 LOCK;
1064 next_sv = coro_deq (aTHX_ PRIO_MIN); 1255 next_sv = coro_deq (aTHX_ PRIO_MIN);
1065 1256
1066 /* nothing to schedule: call the idle handler */ 1257 /* nothing to schedule: call the idle handler */
1067 if (!next_sv) 1258 if (expect_false (!next_sv))
1068 { 1259 {
1069 dSP; 1260 dSP;
1070 UNLOCK; 1261 UNLOCK;
1071 1262
1072 ENTER; 1263 ENTER;
… …
1082 } 1273 }
1083 1274
1084 ta->next = SvSTATE (next_sv); 1275 ta->next = SvSTATE (next_sv);
1085 1276
1086 /* cannot transfer to destroyed coros, skip and look for next */ 1277 /* cannot transfer to destroyed coros, skip and look for next */
1087 if (ta->next->flags & CF_DESTROYED) 1278 if (expect_false (ta->next->flags & CF_DESTROYED))
1088 { 1279 {
1089 UNLOCK; 1280 UNLOCK;
1090 SvREFCNT_dec (next_sv); 1281 SvREFCNT_dec (next_sv);
1091 /* coro_nready is already taken care of by destroy */ 1282 /* coro_nready is already taken care of by destroy */
1092 continue; 1283 continue;
… …
1097 break; 1288 break;
1098 } 1289 }
1099 1290
1100 /* free this only after the transfer */ 1291 /* free this only after the transfer */
1101 prev_sv = SvRV (coro_current); 1292 prev_sv = SvRV (coro_current);
1102 SvRV_set (coro_current, next_sv);
1103 ta->prev = SvSTATE (prev_sv); 1293 ta->prev = SvSTATE (prev_sv);
1104 1294 TRANSFER_CHECK (*ta);
1105 assert (ta->next->flags & CF_READY); 1295 assert (ta->next->flags & CF_READY);
1106 ta->next->flags &= ~CF_READY; 1296 ta->next->flags &= ~CF_READY;
1297 SvRV_set (coro_current, next_sv);
1107 1298
1108 LOCK; 1299 LOCK;
1109 free_coro_mortal (aTHX); 1300 free_coro_mortal (aTHX);
1110 coro_mortal = prev_sv; 1301 coro_mortal = prev_sv;
1111 UNLOCK; 1302 UNLOCK;
… …
1148 dTHX; 1339 dTHX;
1149 struct transfer_args ta; 1340 struct transfer_args ta;
1150 1341
1151 prepare_cede (aTHX_ &ta); 1342 prepare_cede (aTHX_ &ta);
1152 1343
1153 if (ta.prev != ta.next) 1344 if (expect_true (ta.prev != ta.next))
1154 { 1345 {
1155 TRANSFER (ta); 1346 TRANSFER (ta);
1156 return 1; 1347 return 1;
1157 } 1348 }
1158 else 1349 else
… …
1172 } 1363 }
1173 else 1364 else
1174 return 0; 1365 return 0;
1175} 1366}
1176 1367
1368static void
1369api_trace (SV *coro_sv, int flags)
1370{
1371 dTHX;
1372 struct coro *coro = SvSTATE (coro_sv);
1373
1374 if (flags & CC_TRACE)
1375 {
1376 if (!coro->cctx)
1377 coro->cctx = cctx_new ();
1378 else if (!(coro->cctx->flags & CC_TRACE))
1379 croak ("cannot enable tracing on coroutine with custom stack");
1380
1381 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1382 }
1383 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1384 {
1385 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1386
1387 if (coro->flags & CF_RUNNING)
1388 PL_runops = RUNOPS_DEFAULT;
1389 else
1390 coro->runops = RUNOPS_DEFAULT;
1391 }
1392}
1393
1177MODULE = Coro::State PACKAGE = Coro::State 1394MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1178 1395
1179PROTOTYPES: DISABLE 1396PROTOTYPES: DISABLE
1180 1397
1181BOOT: 1398BOOT:
1182{ 1399{
1183#ifdef USE_ITHREADS 1400#ifdef USE_ITHREADS
1184 MUTEX_INIT (&coro_mutex); 1401 MUTEX_INIT (&coro_mutex);
1185#endif 1402#endif
1186 BOOT_PAGESIZE; 1403 BOOT_PAGESIZE;
1187 1404
1405 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1406 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1407
1188 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1408 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1189 1409
1190 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1410 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1191 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 1411 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1192 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1193 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1194 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1195 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); 1412 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1196 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1413 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1197 1414
1198 main_mainstack = PL_mainstack; 1415 main_mainstack = PL_mainstack;
1199 main_top_env = PL_top_env; 1416 main_top_env = PL_top_env;
1200 1417
1201 while (main_top_env->je_prev) 1418 while (main_top_env->je_prev)
… …
1214 struct coro *coro; 1431 struct coro *coro;
1215 HV *hv; 1432 HV *hv;
1216 int i; 1433 int i;
1217 1434
1218 Newz (0, coro, 1, struct coro); 1435 Newz (0, coro, 1, struct coro);
1219 coro->args = newAV (); 1436 coro->args = newAV ();
1220 coro->save = CORO_SAVE_DEF;
1221 coro->flags = CF_NEW; 1437 coro->flags = CF_NEW;
1222 1438
1223 if (first) first->prev = coro; 1439 if (coro_first) coro_first->prev = coro;
1224 coro->next = first; 1440 coro->next = coro_first;
1225 first = coro; 1441 coro_first = coro;
1226 1442
1227 coro->hv = hv = newHV (); 1443 coro->hv = hv = newHV ();
1228 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1444 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1229 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1445 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1230 1446
1447 av_extend (coro->args, items - 1);
1231 for (i = 1; i < items; i++) 1448 for (i = 1; i < items; i++)
1232 av_push (coro->args, newSVsv (ST (i))); 1449 av_push (coro->args, newSVsv (ST (i)));
1233} 1450}
1234 OUTPUT: 1451 OUTPUT:
1235 RETVAL 1452 RETVAL
1236 1453
1237int 1454# these not obviously related functions are all rolled into the same xs
1238save (SV *coro, int new_save = -1) 1455# function to increase chances that they all will call transfer with the same
1239 CODE: 1456# stack offset
1240 RETVAL = api_save (coro, new_save);
1241 OUTPUT:
1242 RETVAL
1243
1244int
1245save_also (SV *coro_sv, int save_also)
1246 CODE:
1247{
1248 struct coro *coro = SvSTATE (coro_sv);
1249 RETVAL = coro->save;
1250 coro->save |= save_also;
1251}
1252 OUTPUT:
1253 RETVAL
1254
1255void 1457void
1256_set_stacklevel (...) 1458_set_stacklevel (...)
1257 ALIAS: 1459 ALIAS:
1258 Coro::State::transfer = 1 1460 Coro::State::transfer = 1
1259 Coro::schedule = 2 1461 Coro::schedule = 2
… …
1293 } 1495 }
1294 1496
1295 BARRIER; 1497 BARRIER;
1296 TRANSFER (ta); 1498 TRANSFER (ta);
1297 1499
1298 if (GIMME_V != G_VOID && ta.next != ta.prev) 1500 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1299 XSRETURN_YES; 1501 XSRETURN_YES;
1300} 1502}
1301 1503
1302bool 1504bool
1303_destroy (SV *coro_sv) 1505_destroy (SV *coro_sv)
… …
1339void 1541void
1340list () 1542list ()
1341 PPCODE: 1543 PPCODE:
1342{ 1544{
1343 struct coro *coro; 1545 struct coro *coro;
1344 for (coro = first; coro; coro = coro->next) 1546 for (coro = coro_first; coro; coro = coro->next)
1345 if (coro->hv) 1547 if (coro->hv)
1346 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 1548 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1347} 1549}
1348 1550
1349void 1551void
1350_eval (SV *coro_sv, SV *coderef) 1552call (Coro::State coro, SV *coderef)
1553 ALIAS:
1554 eval = 1
1351 CODE: 1555 CODE:
1352{ 1556{
1353 struct coro *coro = SvSTATE (coro_sv);
1354 if (coro->mainstack) 1557 if (coro->mainstack)
1355 { 1558 {
1356 struct coro temp; 1559 struct coro temp;
1357 Zero (&temp, 1, struct coro); 1560 Zero (&temp, 1, struct coro);
1358 temp.save = CORO_SAVE_ALL;
1359 1561
1360 if (!(coro->flags & CF_RUNNING)) 1562 if (!(coro->flags & CF_RUNNING))
1361 { 1563 {
1362 save_perl (aTHX_ &temp); 1564 save_perl (aTHX_ &temp);
1363 load_perl (aTHX_ coro); 1565 load_perl (aTHX_ coro);
… …
1367 dSP; 1569 dSP;
1368 ENTER; 1570 ENTER;
1369 SAVETMPS; 1571 SAVETMPS;
1370 PUSHMARK (SP); 1572 PUSHMARK (SP);
1371 PUTBACK; 1573 PUTBACK;
1574 if (ix)
1575 eval_sv (coderef, 0);
1576 else
1372 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1577 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1373 SPAGAIN; 1578 SPAGAIN;
1374 FREETMPS; 1579 FREETMPS;
1375 LEAVE; 1580 LEAVE;
1376 PUTBACK; 1581 PUTBACK;
1377 } 1582 }
… …
1381 save_perl (aTHX_ coro); 1586 save_perl (aTHX_ coro);
1382 load_perl (aTHX_ &temp); 1587 load_perl (aTHX_ &temp);
1383 } 1588 }
1384 } 1589 }
1385} 1590}
1386 1591
1387SV * 1592SV *
1388is_ready (SV *coro_sv) 1593is_ready (Coro::State coro)
1389 PROTOTYPE: $ 1594 PROTOTYPE: $
1390 ALIAS: 1595 ALIAS:
1391 is_ready = CF_READY 1596 is_ready = CF_READY
1392 is_running = CF_RUNNING 1597 is_running = CF_RUNNING
1393 is_new = CF_NEW 1598 is_new = CF_NEW
1394 is_destroyed = CF_DESTROYED 1599 is_destroyed = CF_DESTROYED
1395 CODE: 1600 CODE:
1396 struct coro *coro = SvSTATE (coro_sv);
1397 RETVAL = boolSV (coro->flags & ix); 1601 RETVAL = boolSV (coro->flags & ix);
1398 OUTPUT: 1602 OUTPUT:
1399 RETVAL 1603 RETVAL
1400 1604
1605void
1606api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1607
1608SV *
1609has_stack (Coro::State coro)
1610 PROTOTYPE: $
1611 CODE:
1612 RETVAL = boolSV (!!coro->cctx);
1613 OUTPUT:
1614 RETVAL
1615
1616int
1617is_traced (Coro::State coro)
1618 PROTOTYPE: $
1619 CODE:
1620 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1621 OUTPUT:
1622 RETVAL
1623
1624IV
1625rss (Coro::State coro)
1626 PROTOTYPE: $
1627 ALIAS:
1628 usecount = 1
1629 CODE:
1630 switch (ix)
1631 {
1632 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1633 case 1: RETVAL = coro->usecount; break;
1634 }
1635 OUTPUT:
1636 RETVAL
1637
1401 1638
1402MODULE = Coro::State PACKAGE = Coro 1639MODULE = Coro::State PACKAGE = Coro
1403 1640
1404BOOT: 1641BOOT:
1405{ 1642{
1406 int i; 1643 int i;
1644
1645 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1646 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1647 av_async_pool = get_av ("Coro::async_pool", TRUE);
1648
1649 coro_current = get_sv ("Coro::current", FALSE);
1650 SvREADONLY_on (coro_current);
1407 1651
1408 coro_stash = gv_stashpv ("Coro", TRUE); 1652 coro_stash = gv_stashpv ("Coro", TRUE);
1409 1653
1410 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1654 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1411 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1655 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1412 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1656 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1413 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1657 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1414 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1658 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1415 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1659 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1416 1660
1417 coro_current = get_sv ("Coro::current", FALSE);
1418 SvREADONLY_on (coro_current);
1419
1420 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1661 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1421 coro_ready[i] = newAV (); 1662 coro_ready[i] = newAV ();
1422 1663
1423 { 1664 {
1424 SV *sv = perl_get_sv("Coro::API", 1); 1665 SV *sv = perl_get_sv("Coro::API", 1);
1425 1666
1426 coroapi.schedule = api_schedule; 1667 coroapi.schedule = api_schedule;
1427 coroapi.save = api_save;
1428 coroapi.cede = api_cede; 1668 coroapi.cede = api_cede;
1429 coroapi.cede_notself = api_cede_notself; 1669 coroapi.cede_notself = api_cede_notself;
1430 coroapi.ready = api_ready; 1670 coroapi.ready = api_ready;
1431 coroapi.is_ready = api_is_ready; 1671 coroapi.is_ready = api_is_ready;
1432 coroapi.nready = &coro_nready; 1672 coroapi.nready = &coro_nready;
… …
1481 CODE: 1721 CODE:
1482 RETVAL = coro_nready; 1722 RETVAL = coro_nready;
1483 OUTPUT: 1723 OUTPUT:
1484 RETVAL 1724 RETVAL
1485 1725
1726# for async_pool speedup
1727void
1728_pool_1 (SV *cb)
1729 CODE:
1730{
1731 struct coro *coro = SvSTATE (coro_current);
1732 HV *hv = (HV *)SvRV (coro_current);
1733 AV *defav = GvAV (PL_defgv);
1734 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1735 AV *invoke_av;
1736 int i, len;
1737
1738 if (!invoke)
1739 croak ("\3terminate\2\n");
1740
1741 SvREFCNT_dec (coro->saved_deffh);
1742 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1743
1744 hv_store (hv, "desc", sizeof ("desc") - 1,
1745 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1746
1747 invoke_av = (AV *)SvRV (invoke);
1748 len = av_len (invoke_av);
1749
1750 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1751
1752 if (len > 0)
1753 {
1754 av_fill (defav, len - 1);
1755 for (i = 0; i < len; ++i)
1756 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1757 }
1758
1759 SvREFCNT_dec (invoke);
1760}
1761
1762void
1763_pool_2 (SV *cb)
1764 CODE:
1765{
1766 struct coro *coro = SvSTATE (coro_current);
1767
1768 sv_setsv (cb, &PL_sv_undef);
1769
1770 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1771 coro->saved_deffh = 0;
1772
1773 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1774 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1775 croak ("\3terminate\2\n");
1776
1777 av_clear (GvAV (PL_defgv));
1778 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1779 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1780
1781 coro->prio = 0;
1782
1783 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1784 api_trace (coro_current, 0);
1785
1786 av_push (av_async_pool, newSVsv (coro_current));
1787}
1788
1789
1486MODULE = Coro::State PACKAGE = Coro::AIO 1790MODULE = Coro::State PACKAGE = Coro::AIO
1487 1791
1488SV * 1792SV *
1489_get_state () 1793_get_state ()
1490 CODE: 1794 CODE:

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