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Comparing Coro/Coro/State.xs (file contents):
Revision 1.147 by root, Mon Mar 19 15:50:48 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
… …
129}; 141};
130 142
131static size_t coro_stacksize = CORO_STACKSIZE; 143static size_t coro_stacksize = CORO_STACKSIZE;
132static struct CoroAPI coroapi; 144static struct CoroAPI coroapi;
133static AV *main_mainstack; /* used to differentiate between $main and others */ 145static AV *main_mainstack; /* used to differentiate between $main and others */
146static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 147static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 148static SV *coro_mortal; /* will be freed after next transfer */
136 149
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
137static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
138static 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};
139 169
140/* this is a structure representing a c-level coroutine */ 170/* this is a structure representing a c-level coroutine */
141typedef struct coro_cctx { 171typedef struct coro_cctx {
142 struct coro_cctx *next; 172 struct coro_cctx *next;
143 173
… …
152 coro_context cctx; 182 coro_context cctx;
153 183
154#if CORO_USE_VALGRIND 184#if CORO_USE_VALGRIND
155 int valgrind_id; 185 int valgrind_id;
156#endif 186#endif
157 char inuse, mapped; 187 unsigned char flags;
158} coro_cctx; 188} coro_cctx;
159 189
160enum { 190enum {
161 CF_RUNNING = 0x0001, /* coroutine is running */ 191 CF_RUNNING = 0x0001, /* coroutine is running */
162 CF_READY = 0x0002, /* coroutine is ready */ 192 CF_READY = 0x0002, /* coroutine is ready */
… …
170 coro_cctx *cctx; 200 coro_cctx *cctx;
171 201
172 /* data associated with this coroutine (initial args) */ 202 /* data associated with this coroutine (initial args) */
173 AV *args; 203 AV *args;
174 int refcnt; 204 int refcnt;
175 int save; /* CORO_SAVE flags */
176 int flags; /* CF_ flags */ 205 int flags; /* CF_ flags */
177 206
178 /* optionally saved, might be zero */ 207 /* optionally saved, might be zero */
179 AV *defav; /* @_ */ 208 AV *defav; /* @_ */
180 SV *defsv; /* $_ */ 209 SV *defsv; /* $_ */
181 SV *errsv; /* $@ */ 210 SV *errsv; /* $@ */
182 GV *deffh; /* default filehandle */ 211 SV *deffh; /* default filehandle */
183 SV *irssv; /* $/ */ 212 SV *irssv; /* $/ */
184 SV *irssv_sv; /* real $/ cache */ 213 SV *irssv_sv; /* real $/ cache */
185 214
186#define VAR(name,type) type name; 215#define VAR(name,type) type name;
187# include "state.h" 216# include "state.h"
188#undef VAR 217#undef VAR
189 218
219 /* statistics */
220 int usecount; /* number of transfers to this coro */
221
190 /* coro process data */ 222 /* coro process data */
191 int prio; 223 int prio;
224 SV *throw;
225
226 /* async_pool */
227 SV *saved_deffh;
228
229 /* linked list */
230 struct coro *next, *prev;
231 HV *hv; /* the perl hash associated with this coro, if any */
192}; 232};
193 233
194typedef struct coro *Coro__State; 234typedef struct coro *Coro__State;
195typedef struct coro *Coro__State_or_hashref; 235typedef struct coro *Coro__State_or_hashref;
196 236
… …
205 245
206/* for Coro.pm */ 246/* for Coro.pm */
207static SV *coro_current; 247static SV *coro_current;
208static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 248static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
209static int coro_nready; 249static int coro_nready;
250static struct coro *coro_first;
210 251
211/** lowlevel stuff **********************************************************/ 252/** lowlevel stuff **********************************************************/
212 253
213static AV * 254static AV *
214coro_clone_padlist (pTHX_ CV *cv) 255coro_clone_padlist (pTHX_ CV *cv)
… …
280 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 321 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
281 ? SvMAGIC (cv) \ 322 ? SvMAGIC (cv) \
282 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 323 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
283 : 0 324 : 0
284 325
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
285/* the next two functions merely cache the padlists */ 352/* the next two functions merely cache the padlists */
286static void 353static void
287get_padlist (pTHX_ CV *cv) 354get_padlist (pTHX_ CV *cv)
288{ 355{
289 MAGIC *mg = CORO_MAGIC (cv); 356 MAGIC *mg = CORO_MAGIC (cv);
290 AV *av; 357 AV *av;
291 358
292 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 359 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
293 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 360 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
294 else 361 else
295 { 362 {
296#if CORO_PREFER_PERL_FUNCTIONS 363#if CORO_PREFER_PERL_FUNCTIONS
297 /* this is probably cleaner, but also slower? */ 364 /* this is probably cleaner, but also slower? */
… …
309put_padlist (pTHX_ CV *cv) 376put_padlist (pTHX_ CV *cv)
310{ 377{
311 MAGIC *mg = CORO_MAGIC (cv); 378 MAGIC *mg = CORO_MAGIC (cv);
312 AV *av; 379 AV *av;
313 380
314 if (!mg) 381 if (expect_false (!mg))
315 { 382 {
316 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); 383 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
317 mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 384 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
318 mg->mg_virtual = &vtbl_coro; 385 mg->mg_virtual = &vtbl_coro;
319 mg->mg_obj = (SV *)newAV (); 386 mg->mg_obj = (SV *)newAV ();
320 } 387 }
321 388
322 av = (AV *)mg->mg_obj; 389 av = (AV *)mg->mg_obj;
323 390
324 if (AvFILLp (av) >= AvMAX (av)) 391 if (expect_false (AvFILLp (av) >= AvMAX (av)))
325 av_extend (av, AvMAX (av) + 1); 392 av_extend (av, AvMAX (av) + 1);
326 393
327 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 394 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
328} 395}
329 396
330/** load & save, init *******************************************************/ 397/** load & save, init *******************************************************/
331
332#define SB do {
333#define SE } while (0)
334
335#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
336 398
337static void 399static void
338load_perl (pTHX_ Coro__State c) 400load_perl (pTHX_ Coro__State c)
339{ 401{
340#define VAR(name,type) PL_ ## name = c->name; 402#define VAR(name,type) PL_ ## name = c->name;
341# include "state.h" 403# include "state.h"
342#undef VAR 404#undef VAR
343 405
344 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 406 GvSV (PL_defgv) = c->defsv;
345 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 407 GvAV (PL_defgv) = c->defav;
346 if (c->errsv) REPLACE_SV (ERRSV , c->errsv); 408 GvSV (PL_errgv) = c->errsv;
347 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh); 409 GvSV (irsgv) = c->irssv_sv;
348
349 if (c->irssv)
350 {
351 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
352 {
353 SvREFCNT_dec (c->irssv);
354 c->irssv = 0;
355 }
356 else
357 {
358 REPLACE_SV (PL_rs, c->irssv);
359 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
360 sv_setsv (c->irssv_sv, PL_rs);
361 }
362 }
363 410
364 { 411 {
365 dSP; 412 dSP;
366 CV *cv; 413 CV *cv;
367 414
368 /* now do the ugly restore mess */ 415 /* now do the ugly restore mess */
369 while ((cv = (CV *)POPs)) 416 while (expect_true (cv = (CV *)POPs))
370 { 417 {
371 put_padlist (aTHX_ cv); /* mark this padlist as available */ 418 put_padlist (aTHX_ cv); /* mark this padlist as available */
372 CvDEPTH (cv) = PTR2IV (POPs); 419 CvDEPTH (cv) = PTR2IV (POPs);
373 CvPADLIST (cv) = (AV *)POPs; 420 CvPADLIST (cv) = (AV *)POPs;
374 } 421 }
375 422
376 PUTBACK; 423 PUTBACK;
377 } 424 }
378 assert (!PL_comppad || AvARRAY (PL_comppad));//D
379} 425}
380 426
381static void 427static void
382save_perl (pTHX_ Coro__State c) 428save_perl (pTHX_ Coro__State c)
383{ 429{
384 assert (!PL_comppad || AvARRAY (PL_comppad));//D
385 { 430 {
386 dSP; 431 dSP;
387 I32 cxix = cxstack_ix; 432 I32 cxix = cxstack_ix;
388 PERL_CONTEXT *ccstk = cxstack; 433 PERL_CONTEXT *ccstk = cxstack;
389 PERL_SI *top_si = PL_curstackinfo; 434 PERL_SI *top_si = PL_curstackinfo;
… …
391 /* 436 /*
392 * 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
393 * (and reinitialize) all cv's in the whole callchain :( 438 * (and reinitialize) all cv's in the whole callchain :(
394 */ 439 */
395 440
396 EXTEND (SP, 3 + 1);
397 PUSHs (Nullsv); 441 XPUSHs (Nullsv);
398 /* this loop was inspired by pp_caller */ 442 /* this loop was inspired by pp_caller */
399 for (;;) 443 for (;;)
400 { 444 {
401 while (cxix >= 0) 445 while (expect_true (cxix >= 0))
402 { 446 {
403 PERL_CONTEXT *cx = &ccstk[cxix--]; 447 PERL_CONTEXT *cx = &ccstk[cxix--];
404 448
405 if (CxTYPE (cx) == CXt_SUB) 449 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
406 { 450 {
407 CV *cv = cx->blk_sub.cv; 451 CV *cv = cx->blk_sub.cv;
408 452
409 if (CvDEPTH (cv)) 453 if (expect_true (CvDEPTH (cv)))
410 { 454 {
411 EXTEND (SP, 3); 455 EXTEND (SP, 3);
412 PUSHs ((SV *)CvPADLIST (cv)); 456 PUSHs ((SV *)CvPADLIST (cv));
413 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 457 PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
414 PUSHs ((SV *)cv); 458 PUSHs ((SV *)cv);
… …
417 get_padlist (aTHX_ cv); 461 get_padlist (aTHX_ cv);
418 } 462 }
419 } 463 }
420 } 464 }
421 465
422 if (top_si->si_type == PERLSI_MAIN) 466 if (expect_true (top_si->si_type == PERLSI_MAIN))
423 break; 467 break;
424 468
425 top_si = top_si->si_prev; 469 top_si = top_si->si_prev;
426 ccstk = top_si->si_cxstack; 470 ccstk = top_si->si_cxstack;
427 cxix = top_si->si_cxix; 471 cxix = top_si->si_cxix;
428 } 472 }
429 473
430 PUTBACK; 474 PUTBACK;
431 } 475 }
432 476
433 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 477 c->defav = GvAV (PL_defgv);
434 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 478 c->defsv = DEFSV;
435 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 479 c->errsv = ERRSV;
436 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 480 c->irssv_sv = GvSV (irsgv);
437 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
438 481
439#define VAR(name,type)c->name = PL_ ## name; 482#define VAR(name,type)c->name = PL_ ## name;
440# include "state.h" 483# include "state.h"
441#undef VAR 484#undef VAR
442} 485}
… …
451# define coro_init_stacks init_stacks 494# define coro_init_stacks init_stacks
452#else 495#else
453static void 496static void
454coro_init_stacks (pTHX) 497coro_init_stacks (pTHX)
455{ 498{
456 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 499 PL_curstackinfo = new_stackinfo(64, 6);
457 PL_curstackinfo->si_type = PERLSI_MAIN; 500 PL_curstackinfo->si_type = PERLSI_MAIN;
458 PL_curstack = PL_curstackinfo->si_stack; 501 PL_curstack = PL_curstackinfo->si_stack;
459 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 502 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
460 503
461 PL_stack_base = AvARRAY(PL_curstack); 504 PL_stack_base = AvARRAY(PL_curstack);
462 PL_stack_sp = PL_stack_base; 505 PL_stack_sp = PL_stack_base;
463 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 506 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
464 507
465 New(50,PL_tmps_stack,128,SV*); 508 New(50,PL_tmps_stack,64,SV*);
466 PL_tmps_floor = -1; 509 PL_tmps_floor = -1;
467 PL_tmps_ix = -1; 510 PL_tmps_ix = -1;
468 PL_tmps_max = 128; 511 PL_tmps_max = 64;
469 512
470 New(54,PL_markstack,32,I32); 513 New(54,PL_markstack,16,I32);
471 PL_markstack_ptr = PL_markstack; 514 PL_markstack_ptr = PL_markstack;
472 PL_markstack_max = PL_markstack + 32; 515 PL_markstack_max = PL_markstack + 16;
473 516
474#ifdef SET_MARK_OFFSET 517#ifdef SET_MARK_OFFSET
475 SET_MARK_OFFSET; 518 SET_MARK_OFFSET;
476#endif 519#endif
477 520
478 New(54,PL_scopestack,32,I32); 521 New(54,PL_scopestack,16,I32);
479 PL_scopestack_ix = 0; 522 PL_scopestack_ix = 0;
480 PL_scopestack_max = 32; 523 PL_scopestack_max = 16;
481 524
482 New(54,PL_savestack,64,ANY); 525 New(54,PL_savestack,64,ANY);
483 PL_savestack_ix = 0; 526 PL_savestack_ix = 0;
484 PL_savestack_max = 64; 527 PL_savestack_max = 64;
485 528
486#if !PERL_VERSION_ATLEAST (5,9,0) 529#if !PERL_VERSION_ATLEAST (5,9,0)
487 New(54,PL_retstack,16,OP*); 530 New(54,PL_retstack,4,OP*);
488 PL_retstack_ix = 0; 531 PL_retstack_ix = 0;
489 PL_retstack_max = 16; 532 PL_retstack_max = 4;
490#endif 533#endif
491} 534}
492#endif 535#endif
493 536
494/* 537/*
495 * destroy the stacks, the callchain etc... 538 * destroy the stacks, the callchain etc...
496 */ 539 */
497static void 540static void
498coro_destroy_stacks (pTHX) 541coro_destroy_stacks (pTHX)
499{ 542{
500 if (!IN_DESTRUCT)
501 {
502 /* restore all saved variables and stuff */
503 LEAVE_SCOPE (0);
504 assert (PL_tmps_floor == -1);
505
506 /* free all temporaries */
507 FREETMPS;
508 assert (PL_tmps_ix == -1);
509
510 /* unwind all extra stacks */
511 POPSTACK_TO (PL_mainstack);
512
513 /* unwind main stack */
514 dounwind (-1);
515 }
516
517 while (PL_curstackinfo->si_next) 543 while (PL_curstackinfo->si_next)
518 PL_curstackinfo = PL_curstackinfo->si_next; 544 PL_curstackinfo = PL_curstackinfo->si_next;
519 545
520 while (PL_curstackinfo) 546 while (PL_curstackinfo)
521 { 547 {
… …
536#if !PERL_VERSION_ATLEAST (5,9,0) 562#if !PERL_VERSION_ATLEAST (5,9,0)
537 Safefree (PL_retstack); 563 Safefree (PL_retstack);
538#endif 564#endif
539} 565}
540 566
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
541/** coroutine stack handling ************************************************/ 598/** coroutine stack handling ************************************************/
542 599
543static void 600static void
544setup_coro (pTHX_ struct coro *coro) 601coro_setup (pTHX_ struct coro *coro)
545{ 602{
546 /* 603 /*
547 * emulate part of the perl startup here. 604 * emulate part of the perl startup here.
548 */ 605 */
549 coro_init_stacks (aTHX); 606 coro_init_stacks (aTHX);
550 607
608 PL_runops = RUNOPS_DEFAULT;
551 PL_curcop = &PL_compiling; 609 PL_curcop = &PL_compiling;
552 PL_in_eval = EVAL_NULL; 610 PL_in_eval = EVAL_NULL;
553 PL_comppad = 0; 611 PL_comppad = 0;
554 PL_curpm = 0; 612 PL_curpm = 0;
613 PL_curpad = 0;
555 PL_localizing = 0; 614 PL_localizing = 0;
556 PL_dirty = 0; 615 PL_dirty = 0;
557 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);
558 624
559 { 625 {
560 dSP; 626 dSP;
561 LOGOP myop; 627 LOGOP myop;
562 628
563 SvREFCNT_dec (GvAV (PL_defgv));
564 GvAV (PL_defgv) = coro->args; coro->args = 0;
565
566 Zero (&myop, 1, LOGOP); 629 Zero (&myop, 1, LOGOP);
567 myop.op_next = Nullop; 630 myop.op_next = Nullop;
568 myop.op_flags = OPf_WANT_VOID; 631 myop.op_flags = OPf_WANT_VOID;
569 632
570 PUSHMARK (SP); 633 PUSHMARK (SP);
571 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 634 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
572 PUTBACK; 635 PUTBACK;
573 PL_op = (OP *)&myop; 636 PL_op = (OP *)&myop;
574 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 637 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575 SPAGAIN; 638 SPAGAIN;
576 } 639 }
577 640
578 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);
579} 675}
580 676
581static void 677static void
582free_coro_mortal (pTHX) 678free_coro_mortal (pTHX)
583{ 679{
584 if (coro_mortal) 680 if (expect_true (coro_mortal))
585 { 681 {
586 SvREFCNT_dec (coro_mortal); 682 SvREFCNT_dec (coro_mortal);
587 coro_mortal = 0; 683 coro_mortal = 0;
588 } 684 }
589} 685}
590 686
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;
809}
810
591/* 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 */
812/* _cctx_init should be careful, as it could be called at almost any time */
813/* during execution of a perl program */
592static void NOINLINE 814static void NOINLINE
593prepare_cctx (pTHX_ coro_cctx *cctx) 815prepare_cctx (pTHX_ coro_cctx *cctx)
594{ 816{
595 dSP; 817 dSP;
596 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;
597 824
598 Zero (&myop, 1, LOGOP); 825 Zero (&myop, 1, LOGOP);
599 myop.op_next = PL_op; 826 myop.op_next = PL_op;
600 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 827 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
601 828
… …
607 PL_op = (OP *)&myop; 834 PL_op = (OP *)&myop;
608 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
609 SPAGAIN; 836 SPAGAIN;
610} 837}
611 838
839/*
840 * this is a _very_ stripped down perl interpreter ;)
841 */
612static void 842static void
613coro_run (void *arg) 843coro_run (void *arg)
614{ 844{
615 dTHX; 845 dTHX;
616 846
617 /* coro_run is the alternative tail of transfer(), so unlock here. */ 847 /* coro_run is the alternative tail of transfer(), so unlock here. */
618 UNLOCK; 848 UNLOCK;
619 849
620 /* 850 /* we now skip the entersub that lead to transfer() */
621 * this is a _very_ stripped down perl interpreter ;) 851 PL_op = PL_op->op_next;
622 */
623 PL_top_env = &PL_start_env;
624 852
625 /* inject call to cctx_init */ 853 /* inject a fake subroutine call to cctx_init */
626 prepare_cctx (aTHX_ (coro_cctx *)arg); 854 prepare_cctx (aTHX_ (coro_cctx *)arg);
627 855
628 /* somebody will hit me for both perl_run and PL_restartop */ 856 /* somebody or something will hit me for both perl_run and PL_restartop */
629 PL_restartop = PL_op; 857 PL_restartop = PL_op;
630 perl_run (PL_curinterp); 858 perl_run (PL_curinterp);
631 859
632 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 860 /*
633 abort (); 861 * If perl-run returns we assume exit() was being called or the coro
862 * fell off the end, which seems to be the only valid (non-bug)
863 * reason for perl_run to return. We try to exit by jumping to the
864 * bootstrap-time "top" top_env, as we cannot restore the "main"
865 * coroutine as Coro has no such concept
866 */
867 PL_top_env = main_top_env;
868 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
634} 869}
635 870
636static coro_cctx * 871static coro_cctx *
637cctx_new () 872cctx_new ()
638{ 873{
… …
655# if CORO_STACKGUARD 890# if CORO_STACKGUARD
656 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 891 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
657# endif 892# endif
658 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 893 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
659 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 894 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
660 cctx->mapped = 1; 895 cctx->flags |= CC_MAPPED;
661 } 896 }
662 else 897 else
663#endif 898#endif
664 { 899 {
665 cctx->ssize = coro_stacksize * (long)sizeof (long); 900 cctx->ssize = coro_stacksize * (long)sizeof (long);
… …
692#if CORO_USE_VALGRIND 927#if CORO_USE_VALGRIND
693 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 928 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694#endif 929#endif
695 930
696#if HAVE_MMAP 931#if HAVE_MMAP
697 if (cctx->mapped) 932 if (cctx->flags & CC_MAPPED)
698 munmap (cctx->sptr, cctx->ssize); 933 munmap (cctx->sptr, cctx->ssize);
699 else 934 else
700#endif 935#endif
701 Safefree (cctx->sptr); 936 Safefree (cctx->sptr);
702 937
703 Safefree (cctx); 938 Safefree (cctx);
704} 939}
705 940
941/* wether this cctx should be destructed */
942#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
943
706static coro_cctx * 944static coro_cctx *
707cctx_get (pTHX) 945cctx_get (pTHX)
708{ 946{
709 while (cctx_first) 947 while (expect_true (cctx_first))
710 { 948 {
711 coro_cctx *cctx = cctx_first; 949 coro_cctx *cctx = cctx_first;
712 cctx_first = cctx->next; 950 cctx_first = cctx->next;
713 --cctx_idle; 951 --cctx_idle;
714 952
715 if (cctx->ssize >= coro_stacksize) 953 if (expect_true (!CCTX_EXPIRED (cctx)))
716 return cctx; 954 return cctx;
717 955
718 cctx_destroy (cctx); 956 cctx_destroy (cctx);
719 } 957 }
720 958
721 PL_op = PL_op->op_next;
722 return cctx_new (); 959 return cctx_new ();
723} 960}
724 961
725static void 962static void
726cctx_put (coro_cctx *cctx) 963cctx_put (coro_cctx *cctx)
727{ 964{
728 /* free another cctx if overlimit */ 965 /* free another cctx if overlimit */
729 if (cctx_idle >= MAX_IDLE_CCTX) 966 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
730 { 967 {
731 coro_cctx *first = cctx_first; 968 coro_cctx *first = cctx_first;
732 cctx_first = first->next; 969 cctx_first = first->next;
733 --cctx_idle; 970 --cctx_idle;
734 971
735 assert (!first->inuse);
736 cctx_destroy (first); 972 cctx_destroy (first);
737 } 973 }
738 974
739 ++cctx_idle; 975 ++cctx_idle;
740 cctx->next = cctx_first; 976 cctx->next = cctx_first;
741 cctx_first = cctx; 977 cctx_first = cctx;
742} 978}
743 979
744/** coroutine switching *****************************************************/ 980/** coroutine switching *****************************************************/
745 981
746/* 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 */
747static void NOINLINE 1002static void NOINLINE
748transfer (pTHX_ struct coro *prev, struct coro *next) 1003transfer (pTHX_ struct coro *prev, struct coro *next)
749{ 1004{
750 dSTACKLEVEL; 1005 dSTACKLEVEL;
751 1006
752 /* sometimes transfer is only called to set idle_sp */ 1007 /* sometimes transfer is only called to set idle_sp */
753 if (!next) 1008 if (expect_false (!next))
754 { 1009 {
755 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1010 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
756 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 */
757 } 1012 }
758 else if (prev != next) 1013 else if (expect_true (prev != next))
759 { 1014 {
760 coro_cctx *prev__cctx; 1015 coro_cctx *prev__cctx;
761 1016
762 if (prev->flags & CF_NEW) 1017 if (expect_false (prev->flags & CF_NEW))
763 { 1018 {
764 /* create a new empty context */ 1019 /* create a new empty context */
765 Newz (0, prev->cctx, 1, coro_cctx); 1020 Newz (0, prev->cctx, 1, coro_cctx);
766 prev->cctx->inuse = 1;
767 prev->flags &= ~CF_NEW; 1021 prev->flags &= ~CF_NEW;
768 prev->flags |= CF_RUNNING; 1022 prev->flags |= CF_RUNNING;
769 } 1023 }
770 1024
771 /*TODO: must not croak here */
772 if (!prev->flags & CF_RUNNING)
773 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
774
775 if (next->flags & CF_RUNNING)
776 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
777
778 if (next->flags & CF_DESTROYED)
779 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
780
781 prev->flags &= ~CF_RUNNING; 1025 prev->flags &= ~CF_RUNNING;
782 next->flags |= CF_RUNNING; 1026 next->flags |= CF_RUNNING;
783 1027
784 LOCK; 1028 LOCK;
785 1029
786 if (next->flags & CF_NEW) 1030 if (expect_false (next->flags & CF_NEW))
787 { 1031 {
788 /* need to start coroutine */ 1032 /* need to start coroutine */
789 next->flags &= ~CF_NEW; 1033 next->flags &= ~CF_NEW;
790 /* first get rid of the old state */ 1034 /* first get rid of the old state */
791 save_perl (aTHX_ prev); 1035 save_perl (aTHX_ prev);
792 /* setup coroutine call */ 1036 /* setup coroutine call */
793 setup_coro (aTHX_ next); 1037 coro_setup (aTHX_ next);
794 /* need a new stack */
795 assert (!next->cctx);
796 } 1038 }
797 else 1039 else
798 { 1040 {
799 /* coroutine already started */ 1041 /* coroutine already started */
800 save_perl (aTHX_ prev); 1042 save_perl (aTHX_ prev);
… …
802 } 1044 }
803 1045
804 prev__cctx = prev->cctx; 1046 prev__cctx = prev->cctx;
805 1047
806 /* possibly "free" the cctx */ 1048 /* possibly "free" the cctx */
807 if (prev__cctx->idle_sp == STACKLEVEL) 1049 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
808 { 1050 {
809 /* 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 */
810 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));
811 1053
812 prev->cctx = 0; 1054 prev->cctx = 0;
813 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
814 cctx_put (prev__cctx); 1061 cctx_put (prev__cctx);
815 prev__cctx->inuse = 0;
816 } 1062 }
817 1063
1064 ++next->usecount;
1065
818 if (!next->cctx) 1066 if (expect_true (!next->cctx))
819 {
820 next->cctx = cctx_get (aTHX); 1067 next->cctx = cctx_get (aTHX);
821 assert (!next->cctx->inuse);
822 next->cctx->inuse = 1;
823 }
824 1068
825 if (prev__cctx != next->cctx) 1069 if (expect_false (prev__cctx != next->cctx))
826 { 1070 {
827 prev__cctx->top_env = PL_top_env; 1071 prev__cctx->top_env = PL_top_env;
828 PL_top_env = next->cctx->top_env; 1072 PL_top_env = next->cctx->top_env;
829 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1073 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
830 } 1074 }
831 1075
832 free_coro_mortal (aTHX); 1076 free_coro_mortal (aTHX);
833 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 }
834 } 1091 }
835} 1092}
836 1093
837struct transfer_args 1094struct transfer_args
838{ 1095{
839 struct coro *prev, *next; 1096 struct coro *prev, *next;
840}; 1097};
841 1098
842#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)
843 1101
844/** high level stuff ********************************************************/ 1102/** high level stuff ********************************************************/
845 1103
846static int 1104static int
847coro_state_destroy (pTHX_ struct coro *coro) 1105coro_state_destroy (pTHX_ struct coro *coro)
… …
864 1122
865 if (coro->mainstack && coro->mainstack != main_mainstack) 1123 if (coro->mainstack && coro->mainstack != main_mainstack)
866 { 1124 {
867 struct coro temp; 1125 struct coro temp;
868 1126
869 assert (!(coro->flags & CF_RUNNING));
870
871 Zero (&temp, 1, struct coro);
872 temp.save = CORO_SAVE_DEF;
873
874 if (coro->flags & CF_RUNNING) 1127 if (coro->flags & CF_RUNNING)
875 croak ("FATAL: tried to destroy currently running coroutine"); 1128 croak ("FATAL: tried to destroy currently running coroutine");
876 1129
877 save_perl (aTHX_ &temp); 1130 save_perl (aTHX_ &temp);
878 load_perl (aTHX_ coro); 1131 load_perl (aTHX_ coro);
879 1132
880 coro_destroy_stacks (aTHX); 1133 coro_destroy (aTHX_ coro);
881 1134
882 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1135 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
883 1136
884 coro->mainstack = 0; 1137 coro->mainstack = 0;
885 } 1138 }
886 1139
887 cctx_destroy (coro->cctx); 1140 cctx_destroy (coro->cctx);
888 SvREFCNT_dec (coro->args); 1141 SvREFCNT_dec (coro->args);
889 1142
1143 if (coro->next) coro->next->prev = coro->prev;
1144 if (coro->prev) coro->prev->next = coro->next;
1145 if (coro == coro_first) coro_first = coro->next;
1146
890 return 1; 1147 return 1;
891} 1148}
892 1149
893static int 1150static int
894coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1151coro_state_free (pTHX_ SV *sv, MAGIC *mg)
895{ 1152{
896 struct coro *coro = (struct coro *)mg->mg_ptr; 1153 struct coro *coro = (struct coro *)mg->mg_ptr;
897 mg->mg_ptr = 0; 1154 mg->mg_ptr = 0;
1155
1156 coro->hv = 0;
898 1157
899 if (--coro->refcnt < 0) 1158 if (--coro->refcnt < 0)
900 { 1159 {
901 coro_state_destroy (aTHX_ coro); 1160 coro_state_destroy (aTHX_ coro);
902 Safefree (coro); 1161 Safefree (coro);
… …
924#else 1183#else
925# define MGf_DUP 0 1184# define MGf_DUP 0
926#endif 1185#endif
927}; 1186};
928 1187
929static struct coro *
930SvSTATE_ (pTHX_ SV *coro)
931{
932 HV *stash;
933 MAGIC *mg;
934
935 if (SvROK (coro))
936 coro = SvRV (coro);
937
938 stash = SvSTASH (coro);
939 if (stash != coro_stash && stash != coro_state_stash)
940 {
941 /* very slow, but rare, check */
942 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
943 croak ("Coro::State object required");
944 }
945
946 mg = CORO_MAGIC (coro);
947 return (struct coro *)mg->mg_ptr;
948}
949
950#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
951
952static void 1188static void
953prepare_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)
954{ 1190{
955 ta->prev = SvSTATE (prev_sv); 1191 ta->prev = SvSTATE (prev_sv);
956 ta->next = SvSTATE (next_sv); 1192 ta->next = SvSTATE (next_sv);
1193 TRANSFER_CHECK (*ta);
957} 1194}
958 1195
959static void 1196static void
960api_transfer (SV *prev_sv, SV *next_sv) 1197api_transfer (SV *prev_sv, SV *next_sv)
961{ 1198{
962 dTHX; 1199 dTHX;
963 struct transfer_args ta; 1200 struct transfer_args ta;
964 1201
965 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1202 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
966 TRANSFER (ta); 1203 TRANSFER (ta);
967}
968
969static int
970api_save (SV *coro_sv, int new_save)
971{
972 dTHX;
973 struct coro *coro = SvSTATE (coro_sv);
974 int old_save = coro->save;
975
976 if (new_save >= 0)
977 coro->save = new_save;
978
979 return old_save;
980} 1204}
981 1205
982/** Coro ********************************************************************/ 1206/** Coro ********************************************************************/
983 1207
984static void 1208static void
… …
1043 { 1267 {
1044 LOCK; 1268 LOCK;
1045 next_sv = coro_deq (aTHX_ PRIO_MIN); 1269 next_sv = coro_deq (aTHX_ PRIO_MIN);
1046 1270
1047 /* nothing to schedule: call the idle handler */ 1271 /* nothing to schedule: call the idle handler */
1048 if (!next_sv) 1272 if (expect_false (!next_sv))
1049 { 1273 {
1050 dSP; 1274 dSP;
1051 UNLOCK; 1275 UNLOCK;
1052 1276
1053 ENTER; 1277 ENTER;
… …
1063 } 1287 }
1064 1288
1065 ta->next = SvSTATE (next_sv); 1289 ta->next = SvSTATE (next_sv);
1066 1290
1067 /* cannot transfer to destroyed coros, skip and look for next */ 1291 /* cannot transfer to destroyed coros, skip and look for next */
1068 if (ta->next->flags & CF_DESTROYED) 1292 if (expect_false (ta->next->flags & CF_DESTROYED))
1069 { 1293 {
1070 UNLOCK; 1294 UNLOCK;
1071 SvREFCNT_dec (next_sv); 1295 SvREFCNT_dec (next_sv);
1072 /* coro_nready is already taken care of by destroy */ 1296 /* coro_nready is already taken care of by destroy */
1073 continue; 1297 continue;
… …
1078 break; 1302 break;
1079 } 1303 }
1080 1304
1081 /* free this only after the transfer */ 1305 /* free this only after the transfer */
1082 prev_sv = SvRV (coro_current); 1306 prev_sv = SvRV (coro_current);
1083 SvRV_set (coro_current, next_sv);
1084 ta->prev = SvSTATE (prev_sv); 1307 ta->prev = SvSTATE (prev_sv);
1085 1308 TRANSFER_CHECK (*ta);
1086 assert (ta->next->flags & CF_READY); 1309 assert (ta->next->flags & CF_READY);
1087 ta->next->flags &= ~CF_READY; 1310 ta->next->flags &= ~CF_READY;
1311 SvRV_set (coro_current, next_sv);
1088 1312
1089 LOCK; 1313 LOCK;
1090 free_coro_mortal (aTHX); 1314 free_coro_mortal (aTHX);
1091 coro_mortal = prev_sv; 1315 coro_mortal = prev_sv;
1092 UNLOCK; 1316 UNLOCK;
… …
1129 dTHX; 1353 dTHX;
1130 struct transfer_args ta; 1354 struct transfer_args ta;
1131 1355
1132 prepare_cede (aTHX_ &ta); 1356 prepare_cede (aTHX_ &ta);
1133 1357
1134 if (ta.prev != ta.next) 1358 if (expect_true (ta.prev != ta.next))
1135 { 1359 {
1136 TRANSFER (ta); 1360 TRANSFER (ta);
1137 return 1; 1361 return 1;
1138 } 1362 }
1139 else 1363 else
… …
1153 } 1377 }
1154 else 1378 else
1155 return 0; 1379 return 0;
1156} 1380}
1157 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
1158MODULE = Coro::State PACKAGE = Coro::State 1408MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1159 1409
1160PROTOTYPES: DISABLE 1410PROTOTYPES: DISABLE
1161 1411
1162BOOT: 1412BOOT:
1163{ 1413{
1164#ifdef USE_ITHREADS 1414#ifdef USE_ITHREADS
1165 MUTEX_INIT (&coro_mutex); 1415 MUTEX_INIT (&coro_mutex);
1166#endif 1416#endif
1167 BOOT_PAGESIZE; 1417 BOOT_PAGESIZE;
1168 1418
1419 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1420 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1421
1169 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1422 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1170 1423
1171 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1424 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1172 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 1425 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1173 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1174 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1175 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1176 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); 1426 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1177 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1427 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1178 1428
1179 main_mainstack = PL_mainstack; 1429 main_mainstack = PL_mainstack;
1430 main_top_env = PL_top_env;
1431
1432 while (main_top_env->je_prev)
1433 main_top_env = main_top_env->je_prev;
1180 1434
1181 coroapi.ver = CORO_API_VERSION; 1435 coroapi.ver = CORO_API_VERSION;
1182 coroapi.transfer = api_transfer; 1436 coroapi.transfer = api_transfer;
1183 1437
1184 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1438 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
… …
1191 struct coro *coro; 1445 struct coro *coro;
1192 HV *hv; 1446 HV *hv;
1193 int i; 1447 int i;
1194 1448
1195 Newz (0, coro, 1, struct coro); 1449 Newz (0, coro, 1, struct coro);
1196 coro->args = newAV (); 1450 coro->args = newAV ();
1197 coro->save = CORO_SAVE_DEF;
1198 coro->flags = CF_NEW; 1451 coro->flags = CF_NEW;
1199 1452
1453 if (coro_first) coro_first->prev = coro;
1454 coro->next = coro_first;
1455 coro_first = coro;
1456
1200 hv = newHV (); 1457 coro->hv = hv = newHV ();
1201 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;
1202 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1459 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1203 1460
1461 av_extend (coro->args, items - 1);
1204 for (i = 1; i < items; i++) 1462 for (i = 1; i < items; i++)
1205 av_push (coro->args, newSVsv (ST (i))); 1463 av_push (coro->args, newSVsv (ST (i)));
1206} 1464}
1207 OUTPUT: 1465 OUTPUT:
1208 RETVAL 1466 RETVAL
1209 1467
1210int 1468# these not obviously related functions are all rolled into the same xs
1211save (SV *coro, int new_save = -1) 1469# function to increase chances that they all will call transfer with the same
1212 CODE: 1470# stack offset
1213 RETVAL = api_save (coro, new_save);
1214 OUTPUT:
1215 RETVAL
1216
1217int
1218save_also (SV *coro_sv, int save_also)
1219 CODE:
1220{
1221 struct coro *coro = SvSTATE (coro_sv);
1222 RETVAL = coro->save;
1223 coro->save |= save_also;
1224}
1225 OUTPUT:
1226 RETVAL
1227
1228void 1471void
1229_set_stacklevel (...) 1472_set_stacklevel (...)
1230 ALIAS: 1473 ALIAS:
1231 Coro::State::transfer = 1 1474 Coro::State::transfer = 1
1232 Coro::schedule = 2 1475 Coro::schedule = 2
… …
1266 } 1509 }
1267 1510
1268 BARRIER; 1511 BARRIER;
1269 TRANSFER (ta); 1512 TRANSFER (ta);
1270 1513
1271 if (GIMME_V != G_VOID && ta.next != ta.prev) 1514 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1272 XSRETURN_YES; 1515 XSRETURN_YES;
1273} 1516}
1274 1517
1275bool 1518bool
1276_destroy (SV *coro_sv) 1519_destroy (SV *coro_sv)
… …
1307 CODE: 1550 CODE:
1308 RETVAL = cctx_idle; 1551 RETVAL = cctx_idle;
1309 OUTPUT: 1552 OUTPUT:
1310 RETVAL 1553 RETVAL
1311 1554
1555void
1556list ()
1557 PPCODE:
1558{
1559 struct coro *coro;
1560 for (coro = coro_first; coro; coro = coro->next)
1561 if (coro->hv)
1562 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1563}
1564
1565void
1566call (Coro::State coro, SV *coderef)
1567 ALIAS:
1568 eval = 1
1569 CODE:
1570{
1571 if (coro->mainstack)
1572 {
1573 struct coro temp;
1574 Zero (&temp, 1, struct coro);
1575
1576 if (!(coro->flags & CF_RUNNING))
1577 {
1578 save_perl (aTHX_ &temp);
1579 load_perl (aTHX_ coro);
1580 }
1581
1582 {
1583 dSP;
1584 ENTER;
1585 SAVETMPS;
1586 PUSHMARK (SP);
1587 PUTBACK;
1588 if (ix)
1589 eval_sv (coderef, 0);
1590 else
1591 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1592 SPAGAIN;
1593 FREETMPS;
1594 LEAVE;
1595 PUTBACK;
1596 }
1597
1598 if (!(coro->flags & CF_RUNNING))
1599 {
1600 save_perl (aTHX_ coro);
1601 load_perl (aTHX_ &temp);
1602 }
1603 }
1604}
1605
1606SV *
1607is_ready (Coro::State coro)
1608 PROTOTYPE: $
1609 ALIAS:
1610 is_ready = CF_READY
1611 is_running = CF_RUNNING
1612 is_new = CF_NEW
1613 is_destroyed = CF_DESTROYED
1614 CODE:
1615 RETVAL = boolSV (coro->flags & ix);
1616 OUTPUT:
1617 RETVAL
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
1638IV
1639rss (Coro::State coro)
1640 PROTOTYPE: $
1641 ALIAS:
1642 usecount = 1
1643 CODE:
1644 switch (ix)
1645 {
1646 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1647 case 1: RETVAL = coro->usecount; break;
1648 }
1649 OUTPUT:
1650 RETVAL
1651
1652
1312MODULE = Coro::State PACKAGE = Coro 1653MODULE = Coro::State PACKAGE = Coro
1313 1654
1314BOOT: 1655BOOT:
1315{ 1656{
1316 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);
1317 1665
1318 coro_stash = gv_stashpv ("Coro", TRUE); 1666 coro_stash = gv_stashpv ("Coro", TRUE);
1319 1667
1320 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1668 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1321 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1669 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1322 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1670 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1323 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1671 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1324 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1672 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1325 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1673 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1326 1674
1327 coro_current = get_sv ("Coro::current", FALSE);
1328 SvREADONLY_on (coro_current);
1329
1330 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1675 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1331 coro_ready[i] = newAV (); 1676 coro_ready[i] = newAV ();
1332 1677
1333 { 1678 {
1334 SV *sv = perl_get_sv("Coro::API", 1); 1679 SV *sv = perl_get_sv("Coro::API", 1);
1335 1680
1336 coroapi.schedule = api_schedule; 1681 coroapi.schedule = api_schedule;
1337 coroapi.save = api_save;
1338 coroapi.cede = api_cede; 1682 coroapi.cede = api_cede;
1339 coroapi.cede_notself = api_cede_notself; 1683 coroapi.cede_notself = api_cede_notself;
1340 coroapi.ready = api_ready; 1684 coroapi.ready = api_ready;
1341 coroapi.is_ready = api_is_ready; 1685 coroapi.is_ready = api_is_ready;
1342 coroapi.nready = &coro_nready; 1686 coroapi.nready = &coro_nready;
… …
1383 CODE: 1727 CODE:
1384 RETVAL = boolSV (api_ready (self)); 1728 RETVAL = boolSV (api_ready (self));
1385 OUTPUT: 1729 OUTPUT:
1386 RETVAL 1730 RETVAL
1387 1731
1388SV *
1389is_ready (SV *self)
1390 PROTOTYPE: $
1391 CODE:
1392 RETVAL = boolSV (api_is_ready (self));
1393 OUTPUT:
1394 RETVAL
1395
1396int 1732int
1397nready (...) 1733nready (...)
1398 PROTOTYPE: 1734 PROTOTYPE:
1399 CODE: 1735 CODE:
1400 RETVAL = coro_nready; 1736 RETVAL = coro_nready;
1401 OUTPUT: 1737 OUTPUT:
1402 RETVAL 1738 RETVAL
1403 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
1404MODULE = Coro::State PACKAGE = Coro::AIO 1811MODULE = Coro::State PACKAGE = Coro::AIO
1405 1812
1406SV * 1813SV *
1407_get_state () 1814_get_state ()
1408 CODE: 1815 CODE:

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