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Comparing Coro/Coro/State.xs (file contents):
Revision 1.146 by root, Sat Mar 17 19:51:57 2007 UTC vs.
Revision 1.220 by root, Thu Jan 10 05:43:14 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
8 9
9#include "patchlevel.h" 10#include "patchlevel.h"
10 11
11#include <stdio.h> 12#include <stdio.h>
12#include <errno.h> 13#include <errno.h>
13#include <assert.h> 14#include <assert.h>
15#include <inttypes.h> /* portable stdint.h */
14 16
15#ifdef HAVE_MMAP 17#ifdef HAVE_MMAP
16# include <unistd.h> 18# include <unistd.h>
17# include <sys/mman.h> 19# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 20# ifndef MAP_ANONYMOUS
… …
75/* 5.8.7 */ 77/* 5.8.7 */
76#ifndef SvRV_set 78#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 79# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 80#endif
79 81
82/* 5.8.8 */
83#ifndef GV_NOTQUAL
84# define GV_NOTQUAL 0
85#endif
86#ifndef newSV
87# define newSV(l) NEWSV(0,l)
88#endif
89
80#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 90#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
81# undef CORO_STACKGUARD 91# undef CORO_STACKGUARD
82#endif 92#endif
83 93
84#ifndef CORO_STACKGUARD 94#ifndef CORO_STACKGUARD
… …
88/* prefer perl internal functions over our own? */ 98/* prefer perl internal functions over our own? */
89#ifndef CORO_PREFER_PERL_FUNCTIONS 99#ifndef CORO_PREFER_PERL_FUNCTIONS
90# define CORO_PREFER_PERL_FUNCTIONS 0 100# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 101#endif
92 102
93/* The next macro should declare a variable stacklevel that contains and approximation 103/* The next macros try to return the current stack pointer, in an as
94 * to the current C stack pointer. Its property is that it changes with each call 104 * portable way as possible. */
95 * and should be unique. */
96#define dSTACKLEVEL int stacklevel 105#define dSTACKLEVEL volatile char stacklevel
97#define STACKLEVEL ((void *)&stacklevel) 106#define STACKLEVEL ((void *)&stacklevel)
98 107
99#define IN_DESTRUCT (PL_main_cv == Nullcv) 108#define IN_DESTRUCT (PL_main_cv == Nullcv)
100 109
101#if __GNUC__ >= 3 110#if __GNUC__ >= 3
102# define attribute(x) __attribute__(x) 111# define attribute(x) __attribute__(x)
103# define BARRIER __asm__ __volatile__ ("" : : : "memory") 112# define BARRIER __asm__ __volatile__ ("" : : : "memory")
113# define expect(expr,value) __builtin_expect ((expr),(value))
104#else 114#else
105# define attribute(x) 115# define attribute(x)
106# define BARRIER 116# define BARRIER
117# define expect(expr,value) (expr)
107#endif 118#endif
119
120#define expect_false(expr) expect ((expr) != 0, 0)
121#define expect_true(expr) expect ((expr) != 0, 1)
108 122
109#define NOINLINE attribute ((noinline)) 123#define NOINLINE attribute ((noinline))
110 124
111#include "CoroAPI.h" 125#include "CoroAPI.h"
112 126
… …
129}; 143};
130 144
131static size_t coro_stacksize = CORO_STACKSIZE; 145static size_t coro_stacksize = CORO_STACKSIZE;
132static struct CoroAPI coroapi; 146static struct CoroAPI coroapi;
133static AV *main_mainstack; /* used to differentiate between $main and others */ 147static AV *main_mainstack; /* used to differentiate between $main and others */
148static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 149static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 150static volatile SV *coro_mortal; /* will be freed after next transfer */
151
152static GV *irsgv; /* $/ */
153static GV *stdoutgv; /* *STDOUT */
154static SV *rv_diehook;
155static SV *rv_warnhook;
156static HV *hv_sig; /* %SIG */
157
158/* async_pool helper stuff */
159static SV *sv_pool_rss;
160static SV *sv_pool_size;
161static AV *av_async_pool;
136 162
137static struct coro_cctx *cctx_first; 163static struct coro_cctx *cctx_first;
138static int cctx_count, cctx_idle; 164static int cctx_count, cctx_idle;
165
166enum {
167 CC_MAPPED = 0x01,
168 CC_NOREUSE = 0x02, /* throw this away after tracing */
169 CC_TRACE = 0x04,
170 CC_TRACE_SUB = 0x08, /* trace sub calls */
171 CC_TRACE_LINE = 0x10, /* trace each statement */
172 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
173};
139 174
140/* this is a structure representing a c-level coroutine */ 175/* this is a structure representing a c-level coroutine */
141typedef struct coro_cctx { 176typedef struct coro_cctx {
142 struct coro_cctx *next; 177 struct coro_cctx *next;
143 178
… …
152 coro_context cctx; 187 coro_context cctx;
153 188
154#if CORO_USE_VALGRIND 189#if CORO_USE_VALGRIND
155 int valgrind_id; 190 int valgrind_id;
156#endif 191#endif
157 char inuse, mapped; 192 unsigned char flags;
158} coro_cctx; 193} coro_cctx;
159 194
160enum { 195enum {
161 CF_RUNNING = 0x0001, /* coroutine is running */ 196 CF_RUNNING = 0x0001, /* coroutine is running */
162 CF_READY = 0x0002, /* coroutine is ready */ 197 CF_READY = 0x0002, /* coroutine is ready */
163 CF_NEW = 0x0004, /* has never been switched to */ 198 CF_NEW = 0x0004, /* has never been switched to */
164 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 199 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
165}; 200};
166 201
202/* the structure where most of the perl state is stored, overlaid on the cxstack */
203typedef struct {
204 SV *defsv;
205 AV *defav;
206 SV *errsv;
207 SV *irsgv;
208#define VAR(name,type) type name;
209# include "state.h"
210#undef VAR
211} perl_slots;
212
213#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
214
167/* this is a structure representing a perl-level coroutine */ 215/* this is a structure representing a perl-level coroutine */
168struct coro { 216struct coro {
169 /* the c coroutine allocated to this perl coroutine, if any */ 217 /* the c coroutine allocated to this perl coroutine, if any */
170 coro_cctx *cctx; 218 coro_cctx *cctx;
171 219
220 /* process data */
221 AV *mainstack;
222 perl_slots *slot; /* basically the saved sp */
223
172 /* data associated with this coroutine (initial args) */ 224 AV *args; /* data associated with this coroutine (initial args) */
173 AV *args; 225 int refcnt; /* coroutines are refcounted, yes */
174 int refcnt;
175 int save; /* CORO_SAVE flags */
176 int flags; /* CF_ flags */ 226 int flags; /* CF_ flags */
227 HV *hv; /* the perl hash associated with this coro, if any */
177 228
178 /* optionally saved, might be zero */ 229 /* statistics */
179 AV *defav; /* @_ */ 230 int usecount; /* number of transfers to this coro */
180 SV *defsv; /* $_ */
181 SV *errsv; /* $@ */
182 SV *irssv; /* $/ */
183 SV *irssv_sv; /* real $/ cache */
184
185#define VAR(name,type) type name;
186# include "state.h"
187#undef VAR
188 231
189 /* coro process data */ 232 /* coro process data */
190 int prio; 233 int prio;
234 SV *throw; /* exception to be thrown */
235
236 /* async_pool */
237 SV *saved_deffh;
238
239 /* linked list */
240 struct coro *next, *prev;
191}; 241};
192 242
193typedef struct coro *Coro__State; 243typedef struct coro *Coro__State;
194typedef struct coro *Coro__State_or_hashref; 244typedef struct coro *Coro__State_or_hashref;
195 245
… …
204 254
205/* for Coro.pm */ 255/* for Coro.pm */
206static SV *coro_current; 256static SV *coro_current;
207static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 257static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
208static int coro_nready; 258static int coro_nready;
259static struct coro *coro_first;
209 260
210/** lowlevel stuff **********************************************************/ 261/** lowlevel stuff **********************************************************/
262
263static SV *
264coro_get_sv (pTHX_ const char *name, int create)
265{
266#if PERL_VERSION_ATLEAST (5,9,0)
267 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
268 get_sv (name, create);
269#endif
270 return get_sv (name, create);
271}
272
273static AV *
274coro_get_av (pTHX_ const char *name, int create)
275{
276#if PERL_VERSION_ATLEAST (5,9,0)
277 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
278 get_av (name, create);
279#endif
280 return get_av (name, create);
281}
282
283static HV *
284coro_get_hv (pTHX_ const char *name, int create)
285{
286#if PERL_VERSION_ATLEAST (5,9,0)
287 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
288 get_hv (name, create);
289#endif
290 return get_hv (name, create);
291}
211 292
212static AV * 293static AV *
213coro_clone_padlist (pTHX_ CV *cv) 294coro_clone_padlist (pTHX_ CV *cv)
214{ 295{
215 AV *padlist = CvPADLIST (cv); 296 AV *padlist = CvPADLIST (cv);
… …
263 344
264 /* casting is fun. */ 345 /* casting is fun. */
265 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 346 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
266 free_padlist (aTHX_ padlist); 347 free_padlist (aTHX_ padlist);
267 348
268 SvREFCNT_dec (av);
269
270 return 0; 349 return 0;
271} 350}
272 351
273#define PERL_MAGIC_coro PERL_MAGIC_ext 352#define CORO_MAGIC_type_cv PERL_MAGIC_ext
353#define CORO_MAGIC_type_state PERL_MAGIC_ext
274 354
275static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 355static MGVTBL coro_cv_vtbl = {
356 0, 0, 0, 0,
357 coro_cv_free
358};
276 359
277#define CORO_MAGIC(cv) \ 360#define CORO_MAGIC(sv,type) \
278 SvMAGIC (cv) \ 361 SvMAGIC (sv) \
279 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 362 ? SvMAGIC (sv)->mg_type == type \
280 ? SvMAGIC (cv) \ 363 ? SvMAGIC (sv) \
281 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 364 : mg_find (sv, type) \
282 : 0 365 : 0
283 366
367#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
368#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
369
370static struct coro *
371SvSTATE_ (pTHX_ SV *coro)
372{
373 HV *stash;
374 MAGIC *mg;
375
376 if (SvROK (coro))
377 coro = SvRV (coro);
378
379 if (expect_false (SvTYPE (coro) != SVt_PVHV))
380 croak ("Coro::State object required");
381
382 stash = SvSTASH (coro);
383 if (expect_false (stash != coro_stash && stash != coro_state_stash))
384 {
385 /* very slow, but rare, check */
386 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
387 croak ("Coro::State object required");
388 }
389
390 mg = CORO_MAGIC_state (coro);
391 return (struct coro *)mg->mg_ptr;
392}
393
394#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
395
284/* the next two functions merely cache the padlists */ 396/* the next two functions merely cache the padlists */
285static void 397static void
286get_padlist (pTHX_ CV *cv) 398get_padlist (pTHX_ CV *cv)
287{ 399{
288 MAGIC *mg = CORO_MAGIC (cv); 400 MAGIC *mg = CORO_MAGIC_cv (cv);
289 AV *av; 401 AV *av;
290 402
291 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 403 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
292 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 404 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
293 else 405 else
294 { 406 {
295#if CORO_PREFER_PERL_FUNCTIONS 407#if CORO_PREFER_PERL_FUNCTIONS
296 /* this is probably cleaner, but also slower? */ 408 /* this is probably cleaner, but also slower? */
… …
305} 417}
306 418
307static void 419static void
308put_padlist (pTHX_ CV *cv) 420put_padlist (pTHX_ CV *cv)
309{ 421{
310 MAGIC *mg = CORO_MAGIC (cv); 422 MAGIC *mg = CORO_MAGIC_cv (cv);
311 AV *av; 423 AV *av;
312 424
313 if (!mg) 425 if (expect_false (!mg))
314 { 426 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
315 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
316 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
317 mg->mg_virtual = &vtbl_coro;
318 mg->mg_obj = (SV *)newAV ();
319 }
320 427
321 av = (AV *)mg->mg_obj; 428 av = (AV *)mg->mg_obj;
322 429
323 if (AvFILLp (av) >= AvMAX (av)) 430 if (expect_false (AvFILLp (av) >= AvMAX (av)))
324 av_extend (av, AvMAX (av) + 1); 431 av_extend (av, AvMAX (av) + 1);
325 432
326 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 433 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
327} 434}
328 435
329/** load & save, init *******************************************************/ 436/** load & save, init *******************************************************/
330 437
331#define SB do {
332#define SE } while (0)
333
334#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
335
336static void 438static void
337load_perl (pTHX_ Coro__State c) 439load_perl (pTHX_ Coro__State c)
338{ 440{
441 perl_slots *slot = c->slot;
442 c->slot = 0;
443
444 PL_mainstack = c->mainstack;
445
446 GvSV (PL_defgv) = slot->defsv;
447 GvAV (PL_defgv) = slot->defav;
448 GvSV (PL_errgv) = slot->errsv;
449 GvSV (irsgv) = slot->irsgv;
450
339#define VAR(name,type) PL_ ## name = c->name; 451 #define VAR(name,type) PL_ ## name = slot->name;
340# include "state.h" 452 # include "state.h"
341#undef VAR 453 #undef VAR
342
343 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
344 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
345 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
346 if (c->irssv)
347 {
348 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
349 SvREFCNT_dec (c->irssv);
350 else
351 {
352 REPLACE_SV (PL_rs, c->irssv);
353 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
354 sv_setsv (c->irssv_sv, PL_rs);
355 }
356 }
357 454
358 { 455 {
359 dSP; 456 dSP;
457
360 CV *cv; 458 CV *cv;
361 459
362 /* now do the ugly restore mess */ 460 /* now do the ugly restore mess */
363 while ((cv = (CV *)POPs)) 461 while (expect_true (cv = (CV *)POPs))
364 { 462 {
365 put_padlist (aTHX_ cv); /* mark this padlist as available */ 463 put_padlist (aTHX_ cv); /* mark this padlist as available */
366 CvDEPTH (cv) = PTR2IV (POPs); 464 CvDEPTH (cv) = PTR2IV (POPs);
367 CvPADLIST (cv) = (AV *)POPs; 465 CvPADLIST (cv) = (AV *)POPs;
368 } 466 }
369 467
370 PUTBACK; 468 PUTBACK;
371 } 469 }
372 assert (!PL_comppad || AvARRAY (PL_comppad));//D
373} 470}
374 471
375static void 472static void
376save_perl (pTHX_ Coro__State c) 473save_perl (pTHX_ Coro__State c)
377{ 474{
378 assert (!PL_comppad || AvARRAY (PL_comppad));//D
379 { 475 {
380 dSP; 476 dSP;
381 I32 cxix = cxstack_ix; 477 I32 cxix = cxstack_ix;
382 PERL_CONTEXT *ccstk = cxstack; 478 PERL_CONTEXT *ccstk = cxstack;
383 PERL_SI *top_si = PL_curstackinfo; 479 PERL_SI *top_si = PL_curstackinfo;
… …
385 /* 481 /*
386 * the worst thing you can imagine happens first - we have to save 482 * the worst thing you can imagine happens first - we have to save
387 * (and reinitialize) all cv's in the whole callchain :( 483 * (and reinitialize) all cv's in the whole callchain :(
388 */ 484 */
389 485
390 EXTEND (SP, 3 + 1);
391 PUSHs (Nullsv); 486 XPUSHs (Nullsv);
392 /* this loop was inspired by pp_caller */ 487 /* this loop was inspired by pp_caller */
393 for (;;) 488 for (;;)
394 { 489 {
395 while (cxix >= 0) 490 while (expect_true (cxix >= 0))
396 { 491 {
397 PERL_CONTEXT *cx = &ccstk[cxix--]; 492 PERL_CONTEXT *cx = &ccstk[cxix--];
398 493
399 if (CxTYPE (cx) == CXt_SUB) 494 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
400 { 495 {
401 CV *cv = cx->blk_sub.cv; 496 CV *cv = cx->blk_sub.cv;
402 497
403 if (CvDEPTH (cv)) 498 if (expect_true (CvDEPTH (cv)))
404 { 499 {
405 EXTEND (SP, 3); 500 EXTEND (SP, 3);
406 PUSHs ((SV *)CvPADLIST (cv)); 501 PUSHs ((SV *)CvPADLIST (cv));
407 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 502 PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
408 PUSHs ((SV *)cv); 503 PUSHs ((SV *)cv);
… …
411 get_padlist (aTHX_ cv); 506 get_padlist (aTHX_ cv);
412 } 507 }
413 } 508 }
414 } 509 }
415 510
416 if (top_si->si_type == PERLSI_MAIN) 511 if (expect_true (top_si->si_type == PERLSI_MAIN))
417 break; 512 break;
418 513
419 top_si = top_si->si_prev; 514 top_si = top_si->si_prev;
420 ccstk = top_si->si_cxstack; 515 ccstk = top_si->si_cxstack;
421 cxix = top_si->si_cxix; 516 cxix = top_si->si_cxix;
422 } 517 }
423 518
424 PUTBACK; 519 PUTBACK;
425 } 520 }
426 521
427 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 522 /* allocate some space on the context stack for our purposes */
428 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 523 /* we manually unroll here, as usually 2 slots is enough */
429 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 524 if (SLOT_COUNT >= 1) CXINC;
430 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 525 if (SLOT_COUNT >= 2) CXINC;
526 if (SLOT_COUNT >= 3) CXINC;
527 {
528 int i;
529 for (i = 3; i < SLOT_COUNT; ++i)
530 CXINC;
531 }
532 cxstack_ix -= SLOT_COUNT; /* undo allocation */
431 533
534 c->mainstack = PL_mainstack;
535
536 {
537 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
538
539 slot->defav = GvAV (PL_defgv);
540 slot->defsv = DEFSV;
541 slot->errsv = ERRSV;
542 slot->irsgv = GvSV (irsgv);
543
432#define VAR(name,type)c->name = PL_ ## name; 544 #define VAR(name,type) slot->name = PL_ ## name;
433# include "state.h" 545 # include "state.h"
434#undef VAR 546 #undef VAR
547 }
435} 548}
436 549
437/* 550/*
438 * allocate various perl stacks. This is an exact copy 551 * allocate various perl stacks. This is an exact copy
439 * of perl.c:init_stacks, except that it uses less memory 552 * of perl.c:init_stacks, except that it uses less memory
… …
444# define coro_init_stacks init_stacks 557# define coro_init_stacks init_stacks
445#else 558#else
446static void 559static void
447coro_init_stacks (pTHX) 560coro_init_stacks (pTHX)
448{ 561{
449 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 562 PL_curstackinfo = new_stackinfo(32, 8);
450 PL_curstackinfo->si_type = PERLSI_MAIN; 563 PL_curstackinfo->si_type = PERLSI_MAIN;
451 PL_curstack = PL_curstackinfo->si_stack; 564 PL_curstack = PL_curstackinfo->si_stack;
452 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 565 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
453 566
454 PL_stack_base = AvARRAY(PL_curstack); 567 PL_stack_base = AvARRAY(PL_curstack);
455 PL_stack_sp = PL_stack_base; 568 PL_stack_sp = PL_stack_base;
456 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 569 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
457 570
458 New(50,PL_tmps_stack,128,SV*); 571 New(50,PL_tmps_stack,32,SV*);
459 PL_tmps_floor = -1; 572 PL_tmps_floor = -1;
460 PL_tmps_ix = -1; 573 PL_tmps_ix = -1;
461 PL_tmps_max = 128; 574 PL_tmps_max = 32;
462 575
463 New(54,PL_markstack,32,I32); 576 New(54,PL_markstack,16,I32);
464 PL_markstack_ptr = PL_markstack; 577 PL_markstack_ptr = PL_markstack;
465 PL_markstack_max = PL_markstack + 32; 578 PL_markstack_max = PL_markstack + 16;
466 579
467#ifdef SET_MARK_OFFSET 580#ifdef SET_MARK_OFFSET
468 SET_MARK_OFFSET; 581 SET_MARK_OFFSET;
469#endif 582#endif
470 583
471 New(54,PL_scopestack,32,I32); 584 New(54,PL_scopestack,8,I32);
472 PL_scopestack_ix = 0; 585 PL_scopestack_ix = 0;
473 PL_scopestack_max = 32; 586 PL_scopestack_max = 8;
474 587
475 New(54,PL_savestack,64,ANY); 588 New(54,PL_savestack,24,ANY);
476 PL_savestack_ix = 0; 589 PL_savestack_ix = 0;
477 PL_savestack_max = 64; 590 PL_savestack_max = 24;
478 591
479#if !PERL_VERSION_ATLEAST (5,9,0) 592#if !PERL_VERSION_ATLEAST (5,9,0)
480 New(54,PL_retstack,16,OP*); 593 New(54,PL_retstack,4,OP*);
481 PL_retstack_ix = 0; 594 PL_retstack_ix = 0;
482 PL_retstack_max = 16; 595 PL_retstack_max = 4;
483#endif 596#endif
484} 597}
485#endif 598#endif
486 599
487/* 600/*
488 * destroy the stacks, the callchain etc... 601 * destroy the stacks, the callchain etc...
489 */ 602 */
490static void 603static void
491coro_destroy_stacks (pTHX) 604coro_destroy_stacks (pTHX)
492{ 605{
493 if (!IN_DESTRUCT)
494 {
495 /* restore all saved variables and stuff */
496 LEAVE_SCOPE (0);
497 assert (PL_tmps_floor == -1);
498
499 /* free all temporaries */
500 FREETMPS;
501 assert (PL_tmps_ix == -1);
502
503 /* unwind all extra stacks */
504 POPSTACK_TO (PL_mainstack);
505
506 /* unwind main stack */
507 dounwind (-1);
508 }
509
510 while (PL_curstackinfo->si_next) 606 while (PL_curstackinfo->si_next)
511 PL_curstackinfo = PL_curstackinfo->si_next; 607 PL_curstackinfo = PL_curstackinfo->si_next;
512 608
513 while (PL_curstackinfo) 609 while (PL_curstackinfo)
514 { 610 {
… …
529#if !PERL_VERSION_ATLEAST (5,9,0) 625#if !PERL_VERSION_ATLEAST (5,9,0)
530 Safefree (PL_retstack); 626 Safefree (PL_retstack);
531#endif 627#endif
532} 628}
533 629
630static size_t
631coro_rss (pTHX_ struct coro *coro)
632{
633 size_t rss = sizeof (*coro);
634
635 if (coro->mainstack)
636 {
637 perl_slots tmp_slot;
638 perl_slots *slot;
639
640 if (coro->flags & CF_RUNNING)
641 {
642 slot = &tmp_slot;
643
644 #define VAR(name,type) slot->name = PL_ ## name;
645 # include "state.h"
646 #undef VAR
647 }
648 else
649 slot = coro->slot;
650
651 rss += sizeof (slot->curstackinfo);
652 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
653 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
654 rss += slot->tmps_max * sizeof (SV *);
655 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
656 rss += slot->scopestack_max * sizeof (I32);
657 rss += slot->savestack_max * sizeof (ANY);
658
659#if !PERL_VERSION_ATLEAST (5,9,0)
660 rss += slot->retstack_max * sizeof (OP *);
661#endif
662 }
663
664 return rss;
665}
666
534/** coroutine stack handling ************************************************/ 667/** coroutine stack handling ************************************************/
535 668
669static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
670static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
671
672/*
673 * This overrides the default magic get method of %SIG elements.
674 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
675 * and instead of tryign to save and restore the hash elements, we just provide
676 * readback here.
677 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
678 * not expecting this to actually change the hook. This is a potential problem
679 * when a schedule happens then, but we ignore this.
680 */
536static void 681static int
682coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
683{
684 const char *s = MgPV_nolen_const (mg);
685
686 if (*s == '_')
687 {
688 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
689 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
690 }
691
692 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
693}
694
695static int
696coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
697{
698 const char *s = MgPV_nolen_const (mg);
699
700 if (*s == '_')
701 {
702 SV **svp = 0;
703
704 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
705 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
706
707 if (svp)
708 {
709 SV *old = *svp;
710 *svp = newSVsv (sv);
711 SvREFCNT_dec (old);
712 return;
713 }
714 }
715
716 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
717}
718
719static void
537setup_coro (pTHX_ struct coro *coro) 720coro_setup (pTHX_ struct coro *coro)
538{ 721{
539 /* 722 /*
540 * emulate part of the perl startup here. 723 * emulate part of the perl startup here.
541 */ 724 */
542 coro_init_stacks (aTHX); 725 coro_init_stacks (aTHX);
543 726
727 PL_runops = RUNOPS_DEFAULT;
544 PL_curcop = &PL_compiling; 728 PL_curcop = &PL_compiling;
545 PL_in_eval = EVAL_NULL; 729 PL_in_eval = EVAL_NULL;
546 PL_comppad = 0; 730 PL_comppad = 0;
547 PL_curpm = 0; 731 PL_curpm = 0;
732 PL_curpad = 0;
548 PL_localizing = 0; 733 PL_localizing = 0;
549 PL_dirty = 0; 734 PL_dirty = 0;
550 PL_restartop = 0; 735 PL_restartop = 0;
551 736
737 /* recreate the die/warn hooks */
738 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
739 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
740
741 GvSV (PL_defgv) = newSV (0);
742 GvAV (PL_defgv) = coro->args; coro->args = 0;
743 GvSV (PL_errgv) = newSV (0);
744 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
745 PL_rs = newSVsv (GvSV (irsgv));
746 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
747
552 { 748 {
553 dSP; 749 dSP;
554 LOGOP myop; 750 LOGOP myop;
555 751
556 SvREFCNT_dec (GvAV (PL_defgv));
557 GvAV (PL_defgv) = coro->args; coro->args = 0;
558
559 Zero (&myop, 1, LOGOP); 752 Zero (&myop, 1, LOGOP);
560 myop.op_next = Nullop; 753 myop.op_next = Nullop;
561 myop.op_flags = OPf_WANT_VOID; 754 myop.op_flags = OPf_WANT_VOID;
562 755
563 PUSHMARK (SP); 756 PUSHMARK (SP);
564 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 757 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
565 PUTBACK; 758 PUTBACK;
566 PL_op = (OP *)&myop; 759 PL_op = (OP *)&myop;
567 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 760 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
568 SPAGAIN; 761 SPAGAIN;
569 } 762 }
570 763
571 ENTER; /* necessary e.g. for dounwind */ 764 /* this newly created coroutine might be run on an existing cctx which most
765 * likely was suspended in set_stacklevel, called from entersub.
766 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
767 * so we ENTER here for symmetry
768 */
769 ENTER;
770}
771
772static void
773coro_destroy (pTHX_ struct coro *coro)
774{
775 if (!IN_DESTRUCT)
776 {
777 /* restore all saved variables and stuff */
778 LEAVE_SCOPE (0);
779 assert (PL_tmps_floor == -1);
780
781 /* free all temporaries */
782 FREETMPS;
783 assert (PL_tmps_ix == -1);
784
785 /* unwind all extra stacks */
786 POPSTACK_TO (PL_mainstack);
787
788 /* unwind main stack */
789 dounwind (-1);
790 }
791
792 SvREFCNT_dec (GvSV (PL_defgv));
793 SvREFCNT_dec (GvAV (PL_defgv));
794 SvREFCNT_dec (GvSV (PL_errgv));
795 SvREFCNT_dec (PL_defoutgv);
796 SvREFCNT_dec (PL_rs);
797 SvREFCNT_dec (GvSV (irsgv));
798
799 SvREFCNT_dec (PL_diehook);
800 SvREFCNT_dec (PL_warnhook);
801
802 SvREFCNT_dec (coro->saved_deffh);
803 SvREFCNT_dec (coro->throw);
804
805 coro_destroy_stacks (aTHX);
572} 806}
573 807
574static void 808static void
575free_coro_mortal (pTHX) 809free_coro_mortal (pTHX)
576{ 810{
577 if (coro_mortal) 811 if (expect_true (coro_mortal))
578 { 812 {
579 SvREFCNT_dec (coro_mortal); 813 SvREFCNT_dec (coro_mortal);
580 coro_mortal = 0; 814 coro_mortal = 0;
581 } 815 }
582} 816}
583 817
818static int
819runops_trace (pTHX)
820{
821 COP *oldcop = 0;
822 int oldcxix = -2;
823 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
824 coro_cctx *cctx = coro->cctx;
825
826 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
827 {
828 PERL_ASYNC_CHECK ();
829
830 if (cctx->flags & CC_TRACE_ALL)
831 {
832 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
833 {
834 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
835 SV **bot, **top;
836 AV *av = newAV (); /* return values */
837 SV **cb;
838 dSP;
839
840 GV *gv = CvGV (cx->blk_sub.cv);
841 SV *fullname = sv_2mortal (newSV (0));
842 if (isGV (gv))
843 gv_efullname3 (fullname, gv, 0);
844
845 bot = PL_stack_base + cx->blk_oldsp + 1;
846 top = cx->blk_gimme == G_ARRAY ? SP + 1
847 : cx->blk_gimme == G_SCALAR ? bot + 1
848 : bot;
849
850 av_extend (av, top - bot);
851 while (bot < top)
852 av_push (av, SvREFCNT_inc (*bot++));
853
854 PL_runops = RUNOPS_DEFAULT;
855 ENTER;
856 SAVETMPS;
857 EXTEND (SP, 3);
858 PUSHMARK (SP);
859 PUSHs (&PL_sv_no);
860 PUSHs (fullname);
861 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
862 PUTBACK;
863 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
864 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
865 SPAGAIN;
866 FREETMPS;
867 LEAVE;
868 PL_runops = runops_trace;
869 }
870
871 if (oldcop != PL_curcop)
872 {
873 oldcop = PL_curcop;
874
875 if (PL_curcop != &PL_compiling)
876 {
877 SV **cb;
878
879 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
880 {
881 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
882
883 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
884 {
885 runops_proc_t old_runops = PL_runops;
886 dSP;
887 GV *gv = CvGV (cx->blk_sub.cv);
888 SV *fullname = sv_2mortal (newSV (0));
889
890 if (isGV (gv))
891 gv_efullname3 (fullname, gv, 0);
892
893 PL_runops = RUNOPS_DEFAULT;
894 ENTER;
895 SAVETMPS;
896 EXTEND (SP, 3);
897 PUSHMARK (SP);
898 PUSHs (&PL_sv_yes);
899 PUSHs (fullname);
900 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
901 PUTBACK;
902 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
903 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
904 SPAGAIN;
905 FREETMPS;
906 LEAVE;
907 PL_runops = runops_trace;
908 }
909
910 oldcxix = cxstack_ix;
911 }
912
913 if (cctx->flags & CC_TRACE_LINE)
914 {
915 dSP;
916
917 PL_runops = RUNOPS_DEFAULT;
918 ENTER;
919 SAVETMPS;
920 EXTEND (SP, 3);
921 PL_runops = RUNOPS_DEFAULT;
922 PUSHMARK (SP);
923 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
924 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
925 PUTBACK;
926 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
927 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
928 SPAGAIN;
929 FREETMPS;
930 LEAVE;
931 PL_runops = runops_trace;
932 }
933 }
934 }
935 }
936 }
937
938 TAINT_NOT;
939 return 0;
940}
941
584/* inject a fake call to Coro::State::_cctx_init into the execution */ 942/* inject a fake call to Coro::State::_cctx_init into the execution */
943/* _cctx_init should be careful, as it could be called at almost any time */
944/* during execution of a perl program */
585static void NOINLINE 945static void NOINLINE
586prepare_cctx (pTHX_ coro_cctx *cctx) 946cctx_prepare (pTHX_ coro_cctx *cctx)
587{ 947{
588 dSP; 948 dSP;
589 LOGOP myop; 949 LOGOP myop;
950
951 PL_top_env = &PL_start_env;
952
953 if (cctx->flags & CC_TRACE)
954 PL_runops = runops_trace;
590 955
591 Zero (&myop, 1, LOGOP); 956 Zero (&myop, 1, LOGOP);
592 myop.op_next = PL_op; 957 myop.op_next = PL_op;
593 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 958 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
594 959
… …
600 PL_op = (OP *)&myop; 965 PL_op = (OP *)&myop;
601 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 966 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
602 SPAGAIN; 967 SPAGAIN;
603} 968}
604 969
970/*
971 * this is a _very_ stripped down perl interpreter ;)
972 */
605static void 973static void
606coro_run (void *arg) 974cctx_run (void *arg)
607{ 975{
608 dTHX; 976 dTHX;
609 977
610 /* coro_run is the alternative tail of transfer(), so unlock here. */ 978 /* cctx_run is the alternative tail of transfer(), so unlock here. */
611 UNLOCK; 979 UNLOCK;
612 980
613 /* 981 /* we now skip the entersub that lead to transfer() */
614 * this is a _very_ stripped down perl interpreter ;) 982 PL_op = PL_op->op_next;
615 */
616 PL_top_env = &PL_start_env;
617 983
618 /* inject call to cctx_init */ 984 /* inject a fake subroutine call to cctx_init */
619 prepare_cctx (aTHX_ (coro_cctx *)arg); 985 cctx_prepare (aTHX_ (coro_cctx *)arg);
620 986
621 /* somebody will hit me for both perl_run and PL_restartop */ 987 /* somebody or something will hit me for both perl_run and PL_restartop */
622 PL_restartop = PL_op; 988 PL_restartop = PL_op;
623 perl_run (PL_curinterp); 989 perl_run (PL_curinterp);
624 990
625 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 991 /*
626 abort (); 992 * If perl-run returns we assume exit() was being called or the coro
993 * fell off the end, which seems to be the only valid (non-bug)
994 * reason for perl_run to return. We try to exit by jumping to the
995 * bootstrap-time "top" top_env, as we cannot restore the "main"
996 * coroutine as Coro has no such concept
997 */
998 PL_top_env = main_top_env;
999 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
627} 1000}
628 1001
629static coro_cctx * 1002static coro_cctx *
630cctx_new () 1003cctx_new ()
631{ 1004{
… …
636 ++cctx_count; 1009 ++cctx_count;
637 1010
638 Newz (0, cctx, 1, coro_cctx); 1011 Newz (0, cctx, 1, coro_cctx);
639 1012
640#if HAVE_MMAP 1013#if HAVE_MMAP
641
642 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1014 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
643 /* mmap supposedly does allocate-on-write for us */ 1015 /* mmap supposedly does allocate-on-write for us */
644 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1016 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
645 1017
646 if (cctx->sptr != (void *)-1) 1018 if (cctx->sptr != (void *)-1)
… …
648# if CORO_STACKGUARD 1020# if CORO_STACKGUARD
649 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1021 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
650# endif 1022# endif
651 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1023 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
652 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1024 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
653 cctx->mapped = 1; 1025 cctx->flags |= CC_MAPPED;
654 } 1026 }
655 else 1027 else
656#endif 1028#endif
657 { 1029 {
658 cctx->ssize = coro_stacksize * (long)sizeof (long); 1030 cctx->ssize = coro_stacksize * (long)sizeof (long);
… …
667 stack_start = cctx->sptr; 1039 stack_start = cctx->sptr;
668 stack_size = cctx->ssize; 1040 stack_size = cctx->ssize;
669 } 1041 }
670 1042
671 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1043 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
672 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1044 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
673 1045
674 return cctx; 1046 return cctx;
675} 1047}
676 1048
677static void 1049static void
… …
685#if CORO_USE_VALGRIND 1057#if CORO_USE_VALGRIND
686 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1058 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
687#endif 1059#endif
688 1060
689#if HAVE_MMAP 1061#if HAVE_MMAP
690 if (cctx->mapped) 1062 if (cctx->flags & CC_MAPPED)
691 munmap (cctx->sptr, cctx->ssize); 1063 munmap (cctx->sptr, cctx->ssize);
692 else 1064 else
693#endif 1065#endif
694 Safefree (cctx->sptr); 1066 Safefree (cctx->sptr);
695 1067
696 Safefree (cctx); 1068 Safefree (cctx);
697} 1069}
698 1070
1071/* wether this cctx should be destructed */
1072#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1073
699static coro_cctx * 1074static coro_cctx *
700cctx_get (pTHX) 1075cctx_get (pTHX)
701{ 1076{
702 while (cctx_first) 1077 while (expect_true (cctx_first))
703 { 1078 {
704 coro_cctx *cctx = cctx_first; 1079 coro_cctx *cctx = cctx_first;
705 cctx_first = cctx->next; 1080 cctx_first = cctx->next;
706 --cctx_idle; 1081 --cctx_idle;
707 1082
708 if (cctx->ssize >= coro_stacksize) 1083 if (expect_true (!CCTX_EXPIRED (cctx)))
709 return cctx; 1084 return cctx;
710 1085
711 cctx_destroy (cctx); 1086 cctx_destroy (cctx);
712 } 1087 }
713 1088
714 PL_op = PL_op->op_next;
715 return cctx_new (); 1089 return cctx_new ();
716} 1090}
717 1091
718static void 1092static void
719cctx_put (coro_cctx *cctx) 1093cctx_put (coro_cctx *cctx)
720{ 1094{
721 /* free another cctx if overlimit */ 1095 /* free another cctx if overlimit */
722 if (cctx_idle >= MAX_IDLE_CCTX) 1096 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
723 { 1097 {
724 coro_cctx *first = cctx_first; 1098 coro_cctx *first = cctx_first;
725 cctx_first = first->next; 1099 cctx_first = first->next;
726 --cctx_idle; 1100 --cctx_idle;
727 1101
728 assert (!first->inuse);
729 cctx_destroy (first); 1102 cctx_destroy (first);
730 } 1103 }
731 1104
732 ++cctx_idle; 1105 ++cctx_idle;
733 cctx->next = cctx_first; 1106 cctx->next = cctx_first;
734 cctx_first = cctx; 1107 cctx_first = cctx;
735} 1108}
736 1109
737/** coroutine switching *****************************************************/ 1110/** coroutine switching *****************************************************/
738 1111
739/* never call directly, always through the coro_state_transfer global variable */ 1112static void
1113transfer_check (pTHX_ struct coro *prev, struct coro *next)
1114{
1115 if (expect_true (prev != next))
1116 {
1117 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1118 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1119
1120 if (expect_false (next->flags & CF_RUNNING))
1121 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1122
1123 if (expect_false (next->flags & CF_DESTROYED))
1124 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1125
1126 if (
1127#if PERL_VERSION_ATLEAST (5,9,0)
1128 expect_false (PL_parser)
1129#else
1130 expect_false (PL_lex_state != LEX_NOTPARSING)
1131#endif
1132 )
1133 croak ("Coro::State::transfer called while parsing, but this is not supported");
1134 }
1135}
1136
1137/* always use the TRANSFER macro */
740static void NOINLINE 1138static void NOINLINE
741transfer (pTHX_ struct coro *prev, struct coro *next) 1139transfer (pTHX_ struct coro *prev, struct coro *next)
742{ 1140{
743 dSTACKLEVEL; 1141 dSTACKLEVEL;
1142 static volatile int has_throw;
744 1143
745 /* sometimes transfer is only called to set idle_sp */ 1144 /* sometimes transfer is only called to set idle_sp */
746 if (!next) 1145 if (expect_false (!next))
747 { 1146 {
748 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1147 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
749 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1148 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
750 } 1149 }
751 else if (prev != next) 1150 else if (expect_true (prev != next))
752 { 1151 {
753 coro_cctx *prev__cctx; 1152 coro_cctx *prev__cctx;
754 1153
755 if (prev->flags & CF_NEW) 1154 if (expect_false (prev->flags & CF_NEW))
756 { 1155 {
757 /* create a new empty context */ 1156 /* create a new empty context */
758 Newz (0, prev->cctx, 1, coro_cctx); 1157 Newz (0, prev->cctx, 1, coro_cctx);
759 prev->cctx->inuse = 1;
760 prev->flags &= ~CF_NEW; 1158 prev->flags &= ~CF_NEW;
761 prev->flags |= CF_RUNNING; 1159 prev->flags |= CF_RUNNING;
762 } 1160 }
763 1161
764 /*TODO: must not croak here */
765 if (!prev->flags & CF_RUNNING)
766 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
767
768 if (next->flags & CF_RUNNING)
769 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
770
771 if (next->flags & CF_DESTROYED)
772 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
773
774 prev->flags &= ~CF_RUNNING; 1162 prev->flags &= ~CF_RUNNING;
775 next->flags |= CF_RUNNING; 1163 next->flags |= CF_RUNNING;
776 1164
777 LOCK; 1165 LOCK;
778 1166
1167 /* first get rid of the old state */
1168 save_perl (aTHX_ prev);
1169
779 if (next->flags & CF_NEW) 1170 if (expect_false (next->flags & CF_NEW))
780 { 1171 {
781 /* need to start coroutine */ 1172 /* need to start coroutine */
782 next->flags &= ~CF_NEW; 1173 next->flags &= ~CF_NEW;
783 /* first get rid of the old state */
784 save_perl (aTHX_ prev);
785 /* setup coroutine call */ 1174 /* setup coroutine call */
786 setup_coro (aTHX_ next); 1175 coro_setup (aTHX_ next);
787 /* need a new stack */
788 assert (!next->cctx);
789 } 1176 }
790 else 1177 else
791 {
792 /* coroutine already started */
793 save_perl (aTHX_ prev);
794 load_perl (aTHX_ next); 1178 load_perl (aTHX_ next);
795 }
796 1179
797 prev__cctx = prev->cctx; 1180 prev__cctx = prev->cctx;
798 1181
799 /* possibly "free" the cctx */ 1182 /* possibly "free" the cctx */
800 if (prev__cctx->idle_sp == STACKLEVEL) 1183 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
801 { 1184 {
802 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1185 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
803 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1186 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
804 1187
805 prev->cctx = 0; 1188 prev->cctx = 0;
806 1189
1190 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1191 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1192 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1193 if (!next->cctx)
1194 next->cctx = cctx_get (aTHX);
1195
807 cctx_put (prev__cctx); 1196 cctx_put (prev__cctx);
808 prev__cctx->inuse = 0;
809 } 1197 }
810 1198
1199 ++next->usecount;
1200
811 if (!next->cctx) 1201 if (expect_true (!next->cctx))
812 {
813 next->cctx = cctx_get (aTHX); 1202 next->cctx = cctx_get (aTHX);
814 assert (!next->cctx->inuse);
815 next->cctx->inuse = 1;
816 }
817 1203
1204 has_throw = !!next->throw;
1205
818 if (prev__cctx != next->cctx) 1206 if (expect_false (prev__cctx != next->cctx))
819 { 1207 {
820 prev__cctx->top_env = PL_top_env; 1208 prev__cctx->top_env = PL_top_env;
821 PL_top_env = next->cctx->top_env; 1209 PL_top_env = next->cctx->top_env;
822 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1210 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
823 } 1211 }
824 1212
825 free_coro_mortal (aTHX); 1213 free_coro_mortal (aTHX);
826 UNLOCK; 1214 UNLOCK;
1215
1216 if (expect_false (has_throw))
1217 {
1218 struct coro *coro = SvSTATE (coro_current);
1219
1220 if (coro->throw)
1221 {
1222 SV *exception = coro->throw;
1223 coro->throw = 0;
1224 sv_setsv (ERRSV, exception);
1225 croak (0);
1226 }
1227 }
827 } 1228 }
828} 1229}
829 1230
830struct transfer_args 1231struct transfer_args
831{ 1232{
832 struct coro *prev, *next; 1233 struct coro *prev, *next;
833}; 1234};
834 1235
835#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1236#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
1237#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
836 1238
837/** high level stuff ********************************************************/ 1239/** high level stuff ********************************************************/
838 1240
839static int 1241static int
840coro_state_destroy (pTHX_ struct coro *coro) 1242coro_state_destroy (pTHX_ struct coro *coro)
… …
857 1259
858 if (coro->mainstack && coro->mainstack != main_mainstack) 1260 if (coro->mainstack && coro->mainstack != main_mainstack)
859 { 1261 {
860 struct coro temp; 1262 struct coro temp;
861 1263
862 assert (!(coro->flags & CF_RUNNING));
863
864 Zero (&temp, 1, struct coro);
865 temp.save = CORO_SAVE_ALL;
866
867 if (coro->flags & CF_RUNNING) 1264 if (coro->flags & CF_RUNNING)
868 croak ("FATAL: tried to destroy currently running coroutine"); 1265 croak ("FATAL: tried to destroy currently running coroutine");
869 1266
870 save_perl (aTHX_ &temp); 1267 save_perl (aTHX_ &temp);
871 load_perl (aTHX_ coro); 1268 load_perl (aTHX_ coro);
872 1269
873 coro_destroy_stacks (aTHX); 1270 coro_destroy (aTHX_ coro);
874 1271
875 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1272 load_perl (aTHX_ &temp);
876 1273
877 coro->mainstack = 0; 1274 coro->slot = 0;
878 } 1275 }
879 1276
880 cctx_destroy (coro->cctx); 1277 cctx_destroy (coro->cctx);
881 SvREFCNT_dec (coro->args); 1278 SvREFCNT_dec (coro->args);
882 1279
1280 if (coro->next) coro->next->prev = coro->prev;
1281 if (coro->prev) coro->prev->next = coro->next;
1282 if (coro == coro_first) coro_first = coro->next;
1283
883 return 1; 1284 return 1;
884} 1285}
885 1286
886static int 1287static int
887coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1288coro_state_free (pTHX_ SV *sv, MAGIC *mg)
888{ 1289{
889 struct coro *coro = (struct coro *)mg->mg_ptr; 1290 struct coro *coro = (struct coro *)mg->mg_ptr;
890 mg->mg_ptr = 0; 1291 mg->mg_ptr = 0;
1292
1293 coro->hv = 0;
891 1294
892 if (--coro->refcnt < 0) 1295 if (--coro->refcnt < 0)
893 { 1296 {
894 coro_state_destroy (aTHX_ coro); 1297 coro_state_destroy (aTHX_ coro);
895 Safefree (coro); 1298 Safefree (coro);
… …
917#else 1320#else
918# define MGf_DUP 0 1321# define MGf_DUP 0
919#endif 1322#endif
920}; 1323};
921 1324
922static struct coro *
923SvSTATE_ (pTHX_ SV *coro)
924{
925 HV *stash;
926 MAGIC *mg;
927
928 if (SvROK (coro))
929 coro = SvRV (coro);
930
931 stash = SvSTASH (coro);
932 if (stash != coro_stash && stash != coro_state_stash)
933 {
934 /* very slow, but rare, check */
935 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
936 croak ("Coro::State object required");
937 }
938
939 mg = CORO_MAGIC (coro);
940 return (struct coro *)mg->mg_ptr;
941}
942
943#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
944
945static void 1325static void
946prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1326prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
947{ 1327{
948 ta->prev = SvSTATE (prev_sv); 1328 ta->prev = SvSTATE (prev_sv);
949 ta->next = SvSTATE (next_sv); 1329 ta->next = SvSTATE (next_sv);
1330 TRANSFER_CHECK (*ta);
950} 1331}
951 1332
952static void 1333static void
953api_transfer (SV *prev_sv, SV *next_sv) 1334api_transfer (SV *prev_sv, SV *next_sv)
954{ 1335{
… …
957 1338
958 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1339 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
959 TRANSFER (ta); 1340 TRANSFER (ta);
960} 1341}
961 1342
962static int
963api_save (SV *coro_sv, int new_save)
964{
965 dTHX;
966 struct coro *coro = SvSTATE (coro_sv);
967 int old_save = coro->save;
968
969 if (new_save >= 0)
970 coro->save = new_save;
971
972 return old_save;
973}
974
975/** Coro ********************************************************************/ 1343/** Coro ********************************************************************/
976 1344
977static void 1345static void
978coro_enq (pTHX_ SV *coro_sv) 1346coro_enq (pTHX_ SV *coro_sv)
979{ 1347{
980 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1348 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
981} 1349}
982 1350
983static SV * 1351static SV *
984coro_deq (pTHX_ int min_prio) 1352coro_deq (pTHX)
985{ 1353{
986 int prio = PRIO_MAX - PRIO_MIN; 1354 int prio;
987 1355
988 min_prio -= PRIO_MIN;
989 if (min_prio < 0)
990 min_prio = 0;
991
992 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1356 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
993 if (AvFILLp (coro_ready [prio]) >= 0) 1357 if (AvFILLp (coro_ready [prio]) >= 0)
994 return av_shift (coro_ready [prio]); 1358 return av_shift (coro_ready [prio]);
995 1359
996 return 0; 1360 return 0;
997} 1361}
… …
1033 SV *prev_sv, *next_sv; 1397 SV *prev_sv, *next_sv;
1034 1398
1035 for (;;) 1399 for (;;)
1036 { 1400 {
1037 LOCK; 1401 LOCK;
1038 next_sv = coro_deq (aTHX_ PRIO_MIN); 1402 next_sv = coro_deq (aTHX);
1039 1403
1040 /* nothing to schedule: call the idle handler */ 1404 /* nothing to schedule: call the idle handler */
1041 if (!next_sv) 1405 if (expect_false (!next_sv))
1042 { 1406 {
1043 dSP; 1407 dSP;
1044 UNLOCK; 1408 UNLOCK;
1045 1409
1046 ENTER; 1410 ENTER;
1047 SAVETMPS; 1411 SAVETMPS;
1048 1412
1049 PUSHMARK (SP); 1413 PUSHMARK (SP);
1050 PUTBACK; 1414 PUTBACK;
1051 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1415 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1416 SPAGAIN;
1052 1417
1053 FREETMPS; 1418 FREETMPS;
1054 LEAVE; 1419 LEAVE;
1055 continue; 1420 continue;
1056 } 1421 }
1057 1422
1058 ta->next = SvSTATE (next_sv); 1423 ta->next = SvSTATE (next_sv);
1059 1424
1060 /* cannot transfer to destroyed coros, skip and look for next */ 1425 /* cannot transfer to destroyed coros, skip and look for next */
1061 if (ta->next->flags & CF_DESTROYED) 1426 if (expect_false (ta->next->flags & CF_DESTROYED))
1062 { 1427 {
1063 UNLOCK; 1428 UNLOCK;
1064 SvREFCNT_dec (next_sv); 1429 SvREFCNT_dec (next_sv);
1065 /* coro_nready is already taken care of by destroy */ 1430 /* coro_nready is already taken care of by destroy */
1066 continue; 1431 continue;
… …
1071 break; 1436 break;
1072 } 1437 }
1073 1438
1074 /* free this only after the transfer */ 1439 /* free this only after the transfer */
1075 prev_sv = SvRV (coro_current); 1440 prev_sv = SvRV (coro_current);
1076 SvRV_set (coro_current, next_sv);
1077 ta->prev = SvSTATE (prev_sv); 1441 ta->prev = SvSTATE (prev_sv);
1078 1442 TRANSFER_CHECK (*ta);
1079 assert (ta->next->flags & CF_READY); 1443 assert (ta->next->flags & CF_READY);
1080 ta->next->flags &= ~CF_READY; 1444 ta->next->flags &= ~CF_READY;
1445 SvRV_set (coro_current, next_sv);
1081 1446
1082 LOCK; 1447 LOCK;
1083 free_coro_mortal (aTHX); 1448 free_coro_mortal (aTHX);
1084 coro_mortal = prev_sv; 1449 coro_mortal = prev_sv;
1085 UNLOCK; 1450 UNLOCK;
… …
1122 dTHX; 1487 dTHX;
1123 struct transfer_args ta; 1488 struct transfer_args ta;
1124 1489
1125 prepare_cede (aTHX_ &ta); 1490 prepare_cede (aTHX_ &ta);
1126 1491
1127 if (ta.prev != ta.next) 1492 if (expect_true (ta.prev != ta.next))
1128 { 1493 {
1129 TRANSFER (ta); 1494 TRANSFER (ta);
1130 return 1; 1495 return 1;
1131 } 1496 }
1132 else 1497 else
… …
1146 } 1511 }
1147 else 1512 else
1148 return 0; 1513 return 0;
1149} 1514}
1150 1515
1516static void
1517api_trace (SV *coro_sv, int flags)
1518{
1519 dTHX;
1520 struct coro *coro = SvSTATE (coro_sv);
1521
1522 if (flags & CC_TRACE)
1523 {
1524 if (!coro->cctx)
1525 coro->cctx = cctx_new ();
1526 else if (!(coro->cctx->flags & CC_TRACE))
1527 croak ("cannot enable tracing on coroutine with custom stack");
1528
1529 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1530 }
1531 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1532 {
1533 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1534
1535 if (coro->flags & CF_RUNNING)
1536 PL_runops = RUNOPS_DEFAULT;
1537 else
1538 coro->slot->runops = RUNOPS_DEFAULT;
1539 }
1540}
1541
1151MODULE = Coro::State PACKAGE = Coro::State 1542MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1152 1543
1153PROTOTYPES: DISABLE 1544PROTOTYPES: DISABLE
1154 1545
1155BOOT: 1546BOOT:
1156{ 1547{
1157#ifdef USE_ITHREADS 1548#ifdef USE_ITHREADS
1158 MUTEX_INIT (&coro_mutex); 1549 MUTEX_INIT (&coro_mutex);
1159#endif 1550#endif
1160 BOOT_PAGESIZE; 1551 BOOT_PAGESIZE;
1161 1552
1553 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1554 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1555
1556 orig_sigelem_get = PL_vtbl_sigelem.svt_get;
1557 PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1558 orig_sigelem_set = PL_vtbl_sigelem.svt_set;
1559 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1560
1561 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1562 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1563 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1564
1162 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1565 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1163 1566
1567 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1568 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1164 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1569 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1165 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1166 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1167 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1168 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1570 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1169 1571
1170 main_mainstack = PL_mainstack; 1572 main_mainstack = PL_mainstack;
1573 main_top_env = PL_top_env;
1574
1575 while (main_top_env->je_prev)
1576 main_top_env = main_top_env->je_prev;
1171 1577
1172 coroapi.ver = CORO_API_VERSION; 1578 coroapi.ver = CORO_API_VERSION;
1579 coroapi.rev = CORO_API_REVISION;
1173 coroapi.transfer = api_transfer; 1580 coroapi.transfer = api_transfer;
1174 1581
1175 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1582 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1176} 1583}
1177 1584
1178SV * 1585SV *
1179new (char *klass, ...) 1586new (char *klass, ...)
1180 CODE: 1587 CODE:
1181{ 1588{
1182 struct coro *coro; 1589 struct coro *coro;
1590 MAGIC *mg;
1183 HV *hv; 1591 HV *hv;
1184 int i; 1592 int i;
1185 1593
1186 Newz (0, coro, 1, struct coro); 1594 Newz (0, coro, 1, struct coro);
1187 coro->args = newAV (); 1595 coro->args = newAV ();
1188 coro->save = CORO_SAVE_ALL;
1189 coro->flags = CF_NEW; 1596 coro->flags = CF_NEW;
1190 1597
1598 if (coro_first) coro_first->prev = coro;
1599 coro->next = coro_first;
1600 coro_first = coro;
1601
1191 hv = newHV (); 1602 coro->hv = hv = newHV ();
1192 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1603 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1604 mg->mg_flags |= MGf_DUP;
1193 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1605 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1194 1606
1607 av_extend (coro->args, items - 1);
1195 for (i = 1; i < items; i++) 1608 for (i = 1; i < items; i++)
1196 av_push (coro->args, newSVsv (ST (i))); 1609 av_push (coro->args, newSVsv (ST (i)));
1197} 1610}
1198 OUTPUT: 1611 OUTPUT:
1199 RETVAL 1612 RETVAL
1200 1613
1201int 1614# these not obviously related functions are all rolled into the same xs
1202save (SV *coro, int new_save = -1) 1615# function to increase chances that they all will call transfer with the same
1203 CODE: 1616# stack offset
1204 RETVAL = api_save (coro, new_save);
1205 OUTPUT:
1206 RETVAL
1207
1208void 1617void
1209_set_stacklevel (...) 1618_set_stacklevel (...)
1210 ALIAS: 1619 ALIAS:
1211 Coro::State::transfer = 1 1620 Coro::State::transfer = 1
1212 Coro::schedule = 2 1621 Coro::schedule = 2
… …
1214 Coro::cede_notself = 4 1623 Coro::cede_notself = 4
1215 CODE: 1624 CODE:
1216{ 1625{
1217 struct transfer_args ta; 1626 struct transfer_args ta;
1218 1627
1628 PUTBACK;
1219 switch (ix) 1629 switch (ix)
1220 { 1630 {
1221 case 0: 1631 case 0:
1222 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1632 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1223 ta.next = 0; 1633 ta.next = 0;
… …
1242 if (!prepare_cede_notself (aTHX_ &ta)) 1652 if (!prepare_cede_notself (aTHX_ &ta))
1243 XSRETURN_EMPTY; 1653 XSRETURN_EMPTY;
1244 1654
1245 break; 1655 break;
1246 } 1656 }
1657 SPAGAIN;
1247 1658
1248 BARRIER; 1659 BARRIER;
1660 PUTBACK;
1249 TRANSFER (ta); 1661 TRANSFER (ta);
1250 1662 SPAGAIN; /* might be the sp of a different coroutine now */
1251 if (GIMME_V != G_VOID && ta.next != ta.prev) 1663 /* be extra careful not to ever do anything after TRANSFER */
1252 XSRETURN_YES;
1253} 1664}
1254 1665
1255bool 1666bool
1256_destroy (SV *coro_sv) 1667_destroy (SV *coro_sv)
1257 CODE: 1668 CODE:
… …
1287 CODE: 1698 CODE:
1288 RETVAL = cctx_idle; 1699 RETVAL = cctx_idle;
1289 OUTPUT: 1700 OUTPUT:
1290 RETVAL 1701 RETVAL
1291 1702
1703void
1704list ()
1705 PPCODE:
1706{
1707 struct coro *coro;
1708 for (coro = coro_first; coro; coro = coro->next)
1709 if (coro->hv)
1710 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1711}
1712
1713void
1714call (Coro::State coro, SV *coderef)
1715 ALIAS:
1716 eval = 1
1717 CODE:
1718{
1719 if (coro->mainstack)
1720 {
1721 struct coro temp;
1722
1723 if (!(coro->flags & CF_RUNNING))
1724 {
1725 PUTBACK;
1726 save_perl (aTHX_ &temp);
1727 load_perl (aTHX_ coro);
1728 }
1729
1730 {
1731 dSP;
1732 ENTER;
1733 SAVETMPS;
1734 PUTBACK;
1735 PUSHSTACK;
1736 PUSHMARK (SP);
1737
1738 if (ix)
1739 eval_sv (coderef, 0);
1740 else
1741 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1742
1743 POPSTACK;
1744 SPAGAIN;
1745 FREETMPS;
1746 LEAVE;
1747 PUTBACK;
1748 }
1749
1750 if (!(coro->flags & CF_RUNNING))
1751 {
1752 save_perl (aTHX_ coro);
1753 load_perl (aTHX_ &temp);
1754 SPAGAIN;
1755 }
1756 }
1757}
1758
1759SV *
1760is_ready (Coro::State coro)
1761 PROTOTYPE: $
1762 ALIAS:
1763 is_ready = CF_READY
1764 is_running = CF_RUNNING
1765 is_new = CF_NEW
1766 is_destroyed = CF_DESTROYED
1767 CODE:
1768 RETVAL = boolSV (coro->flags & ix);
1769 OUTPUT:
1770 RETVAL
1771
1772void
1773api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1774
1775SV *
1776has_stack (Coro::State coro)
1777 PROTOTYPE: $
1778 CODE:
1779 RETVAL = boolSV (!!coro->cctx);
1780 OUTPUT:
1781 RETVAL
1782
1783int
1784is_traced (Coro::State coro)
1785 PROTOTYPE: $
1786 CODE:
1787 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1788 OUTPUT:
1789 RETVAL
1790
1791IV
1792rss (Coro::State coro)
1793 PROTOTYPE: $
1794 ALIAS:
1795 usecount = 1
1796 CODE:
1797 switch (ix)
1798 {
1799 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1800 case 1: RETVAL = coro->usecount; break;
1801 }
1802 OUTPUT:
1803 RETVAL
1804
1805
1292MODULE = Coro::State PACKAGE = Coro 1806MODULE = Coro::State PACKAGE = Coro
1293 1807
1294BOOT: 1808BOOT:
1295{ 1809{
1296 int i; 1810 int i;
1297 1811
1812 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1813 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1814 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1815
1816 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1817 SvREADONLY_on (coro_current);
1818
1298 coro_stash = gv_stashpv ("Coro", TRUE); 1819 coro_stash = gv_stashpv ("Coro", TRUE);
1299 1820
1300 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1821 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1301 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1822 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1302 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1823 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1303 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1824 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1304 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1825 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1305 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1826 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1306 1827
1307 coro_current = get_sv ("Coro::current", FALSE);
1308 SvREADONLY_on (coro_current);
1309
1310 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1828 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1311 coro_ready[i] = newAV (); 1829 coro_ready[i] = newAV ();
1312 1830
1313 { 1831 {
1314 SV *sv = perl_get_sv("Coro::API", 1); 1832 SV *sv = perl_get_sv ("Coro::API", TRUE);
1833 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1315 1834
1316 coroapi.schedule = api_schedule; 1835 coroapi.schedule = api_schedule;
1317 coroapi.save = api_save;
1318 coroapi.cede = api_cede; 1836 coroapi.cede = api_cede;
1319 coroapi.cede_notself = api_cede_notself; 1837 coroapi.cede_notself = api_cede_notself;
1320 coroapi.ready = api_ready; 1838 coroapi.ready = api_ready;
1321 coroapi.is_ready = api_is_ready; 1839 coroapi.is_ready = api_is_ready;
1322 coroapi.nready = &coro_nready; 1840 coroapi.nready = &coro_nready;
… …
1363 CODE: 1881 CODE:
1364 RETVAL = boolSV (api_ready (self)); 1882 RETVAL = boolSV (api_ready (self));
1365 OUTPUT: 1883 OUTPUT:
1366 RETVAL 1884 RETVAL
1367 1885
1368SV *
1369is_ready (SV *self)
1370 PROTOTYPE: $
1371 CODE:
1372 RETVAL = boolSV (api_is_ready (self));
1373 OUTPUT:
1374 RETVAL
1375
1376int 1886int
1377nready (...) 1887nready (...)
1378 PROTOTYPE: 1888 PROTOTYPE:
1379 CODE: 1889 CODE:
1380 RETVAL = coro_nready; 1890 RETVAL = coro_nready;
1381 OUTPUT: 1891 OUTPUT:
1382 RETVAL 1892 RETVAL
1383 1893
1894void
1895throw (Coro::State self, SV *throw = &PL_sv_undef)
1896 PROTOTYPE: $;$
1897 CODE:
1898 SvREFCNT_dec (self->throw);
1899 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1900
1901# for async_pool speedup
1902void
1903_pool_1 (SV *cb)
1904 CODE:
1905{
1906 struct coro *coro = SvSTATE (coro_current);
1907 HV *hv = (HV *)SvRV (coro_current);
1908 AV *defav = GvAV (PL_defgv);
1909 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1910 AV *invoke_av;
1911 int i, len;
1912
1913 if (!invoke)
1914 croak ("\3async_pool terminate\2\n");
1915
1916 SvREFCNT_dec (coro->saved_deffh);
1917 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1918
1919 hv_store (hv, "desc", sizeof ("desc") - 1,
1920 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1921
1922 invoke_av = (AV *)SvRV (invoke);
1923 len = av_len (invoke_av);
1924
1925 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1926
1927 if (len > 0)
1928 {
1929 av_fill (defav, len - 1);
1930 for (i = 0; i < len; ++i)
1931 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1932 }
1933
1934 SvREFCNT_dec (invoke);
1935}
1936
1937void
1938_pool_2 (SV *cb)
1939 CODE:
1940{
1941 struct coro *coro = SvSTATE (coro_current);
1942
1943 sv_setsv (cb, &PL_sv_undef);
1944
1945 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1946 coro->saved_deffh = 0;
1947
1948 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1949 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1950 croak ("\3async_pool terminate\2\n");
1951
1952 av_clear (GvAV (PL_defgv));
1953 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1954 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1955
1956 coro->prio = 0;
1957
1958 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1959 api_trace (coro_current, 0);
1960
1961 av_push (av_async_pool, newSVsv (coro_current));
1962}
1963
1964
1384MODULE = Coro::State PACKAGE = Coro::AIO 1965MODULE = Coro::State PACKAGE = Coro::AIO
1385 1966
1386SV * 1967SV *
1387_get_state () 1968_get_state ()
1388 CODE: 1969 CODE:

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