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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 1.213 by root, Thu Oct 11 00:40:48 2007 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
8 9
9#include "patchlevel.h" 10#include "patchlevel.h"
10 11
11#include <stdio.h> 12#include <stdio.h>
12#include <errno.h> 13#include <errno.h>
13#include <assert.h> 14#include <assert.h>
15#include <inttypes.h> /* portable stdint.h */
14 16
15#ifdef HAVE_MMAP 17#ifdef HAVE_MMAP
16# include <unistd.h> 18# include <unistd.h>
17# include <sys/mman.h> 19# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 20# ifndef MAP_ANONYMOUS
… …
75/* 5.8.7 */ 77/* 5.8.7 */
76#ifndef SvRV_set 78#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 79# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 80#endif
79 81
82/* 5.8.8 */
83#ifndef GV_NOTQUAL
84# define GV_NOTQUAL 0
85#endif
86#ifndef newSV
87# define newSV(l) NEWSV(0,l)
88#endif
89
80#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 90#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
81# undef CORO_STACKGUARD 91# undef CORO_STACKGUARD
82#endif 92#endif
83 93
84#ifndef CORO_STACKGUARD 94#ifndef CORO_STACKGUARD
… …
88/* prefer perl internal functions over our own? */ 98/* prefer perl internal functions over our own? */
89#ifndef CORO_PREFER_PERL_FUNCTIONS 99#ifndef CORO_PREFER_PERL_FUNCTIONS
90# define CORO_PREFER_PERL_FUNCTIONS 0 100# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 101#endif
92 102
93/* The next macro should declare a variable stacklevel that contains and approximation 103/* The next macros try to return the current stack pointer, in an as
94 * to the current C stack pointer. Its property is that it changes with each call 104 * portable way as possible. */
95 * and should be unique. */
96#define dSTACKLEVEL int stacklevel 105#define dSTACKLEVEL volatile char stacklevel
97#define STACKLEVEL ((void *)&stacklevel) 106#define STACKLEVEL ((void *)&stacklevel)
98 107
99#define IN_DESTRUCT (PL_main_cv == Nullcv) 108#define IN_DESTRUCT (PL_main_cv == Nullcv)
100 109
101#if __GNUC__ >= 3 110#if __GNUC__ >= 3
102# define attribute(x) __attribute__(x) 111# define attribute(x) __attribute__(x)
103# define BARRIER __asm__ __volatile__ ("" : : : "memory") 112# define BARRIER __asm__ __volatile__ ("" : : : "memory")
113# define expect(expr,value) __builtin_expect ((expr),(value))
104#else 114#else
105# define attribute(x) 115# define attribute(x)
106# define BARRIER 116# define BARRIER
117# define expect(expr,value) (expr)
107#endif 118#endif
119
120#define expect_false(expr) expect ((expr) != 0, 0)
121#define expect_true(expr) expect ((expr) != 0, 1)
108 122
109#define NOINLINE attribute ((noinline)) 123#define NOINLINE attribute ((noinline))
110 124
111#include "CoroAPI.h" 125#include "CoroAPI.h"
112 126
… …
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 SV *coro_mortal; /* will be freed after next transfer */
136 151
152static GV *irsgv; /* $/ */
153static GV *stdoutgv; /* *STDOUT */
154
155static HV *hv_sig; /* %SIG */
156static SV *sv_diehook;
157static SV *sv_warnhook;
158
159/* async_pool helper stuff */
160static SV *sv_pool_rss;
161static SV *sv_pool_size;
162static AV *av_async_pool;
163
137static struct coro_cctx *cctx_first; 164static struct coro_cctx *cctx_first;
138static int cctx_count, cctx_idle; 165static int cctx_count, cctx_idle;
166
167enum {
168 CC_MAPPED = 0x01,
169 CC_NOREUSE = 0x02, /* throw this away after tracing */
170 CC_TRACE = 0x04,
171 CC_TRACE_SUB = 0x08, /* trace sub calls */
172 CC_TRACE_LINE = 0x10, /* trace each statement */
173 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
174};
139 175
140/* this is a structure representing a c-level coroutine */ 176/* this is a structure representing a c-level coroutine */
141typedef struct coro_cctx { 177typedef struct coro_cctx {
142 struct coro_cctx *next; 178 struct coro_cctx *next;
143 179
… …
152 coro_context cctx; 188 coro_context cctx;
153 189
154#if CORO_USE_VALGRIND 190#if CORO_USE_VALGRIND
155 int valgrind_id; 191 int valgrind_id;
156#endif 192#endif
157 char inuse, mapped; 193 unsigned char flags;
158} coro_cctx; 194} coro_cctx;
159 195
160enum { 196enum {
161 CF_RUNNING = 0x0001, /* coroutine is running */ 197 CF_RUNNING = 0x0001, /* coroutine is running */
162 CF_READY = 0x0002, /* coroutine is ready */ 198 CF_READY = 0x0002, /* coroutine is ready */
163 CF_NEW = 0x0004, /* has never been switched to */ 199 CF_NEW = 0x0004, /* has never been switched to */
164 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 200 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
165}; 201};
166 202
203/* the structure where most of the perl state is stored, overlaid on the cxstack */
204typedef struct {
205 SV *defsv;
206 AV *defav;
207 SV *errsv;
208 SV *irsgv;
209#define VAR(name,type) type name;
210# include "state.h"
211#undef VAR
212} perl_slots;
213
214#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
215
167/* this is a structure representing a perl-level coroutine */ 216/* this is a structure representing a perl-level coroutine */
168struct coro { 217struct coro {
169 /* the c coroutine allocated to this perl coroutine, if any */ 218 /* the c coroutine allocated to this perl coroutine, if any */
170 coro_cctx *cctx; 219 coro_cctx *cctx;
171 220
221 /* process data */
222 AV *mainstack;
223 perl_slots *slot; /* basically the saved sp */
224
172 /* data associated with this coroutine (initial args) */ 225 AV *args; /* data associated with this coroutine (initial args) */
173 AV *args; 226 int refcnt; /* coroutines are refcounted, yes */
174 int refcnt;
175 int save; /* CORO_SAVE flags */
176 int flags; /* CF_ flags */ 227 int flags; /* CF_ flags */
228 HV *hv; /* the perl hash associated with this coro, if any */
177 229
178 /* optionally saved, might be zero */ 230 /* statistics */
179 AV *defav; /* @_ */ 231 int usecount; /* number of transfers to this coro */
180 SV *defsv; /* $_ */
181 SV *errsv; /* $@ */
182 GV *deffh; /* default filehandle */
183 SV *irssv; /* $/ */
184 SV *irssv_sv; /* real $/ cache */
185
186#define VAR(name,type) type name;
187# include "state.h"
188#undef VAR
189 232
190 /* coro process data */ 233 /* coro process data */
191 int prio; 234 int prio;
235 SV *throw; /* exception to be thrown */
236
237 /* async_pool */
238 SV *saved_deffh;
239
240 /* linked list */
241 struct coro *next, *prev;
192}; 242};
193 243
194typedef struct coro *Coro__State; 244typedef struct coro *Coro__State;
195typedef struct coro *Coro__State_or_hashref; 245typedef struct coro *Coro__State_or_hashref;
196 246
… …
205 255
206/* for Coro.pm */ 256/* for Coro.pm */
207static SV *coro_current; 257static SV *coro_current;
208static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 258static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
209static int coro_nready; 259static int coro_nready;
260static struct coro *coro_first;
210 261
211/** lowlevel stuff **********************************************************/ 262/** lowlevel stuff **********************************************************/
263
264static SV *
265coro_get_sv (pTHX_ const char *name, int create)
266{
267#if PERL_VERSION_ATLEAST (5,9,0)
268 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
269 get_sv (name, create);
270#endif
271 return get_sv (name, create);
272}
273
274static AV *
275coro_get_av (pTHX_ const char *name, int create)
276{
277#if PERL_VERSION_ATLEAST (5,9,0)
278 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
279 get_av (name, create);
280#endif
281 return get_av (name, create);
282}
283
284static HV *
285coro_get_hv (pTHX_ const char *name, int create)
286{
287#if PERL_VERSION_ATLEAST (5,9,0)
288 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
289 get_hv (name, create);
290#endif
291 return get_hv (name, create);
292}
212 293
213static AV * 294static AV *
214coro_clone_padlist (pTHX_ CV *cv) 295coro_clone_padlist (pTHX_ CV *cv)
215{ 296{
216 AV *padlist = CvPADLIST (cv); 297 AV *padlist = CvPADLIST (cv);
… …
280 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 361 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
281 ? SvMAGIC (cv) \ 362 ? SvMAGIC (cv) \
282 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 363 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
283 : 0 364 : 0
284 365
366static struct coro *
367SvSTATE_ (pTHX_ SV *coro)
368{
369 HV *stash;
370 MAGIC *mg;
371
372 if (SvROK (coro))
373 coro = SvRV (coro);
374
375 if (expect_false (SvTYPE (coro) != SVt_PVHV))
376 croak ("Coro::State object required");
377
378 stash = SvSTASH (coro);
379 if (expect_false (stash != coro_stash && stash != coro_state_stash))
380 {
381 /* very slow, but rare, check */
382 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
383 croak ("Coro::State object required");
384 }
385
386 mg = CORO_MAGIC (coro);
387 return (struct coro *)mg->mg_ptr;
388}
389
390#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
391
285/* the next two functions merely cache the padlists */ 392/* the next two functions merely cache the padlists */
286static void 393static void
287get_padlist (pTHX_ CV *cv) 394get_padlist (pTHX_ CV *cv)
288{ 395{
289 MAGIC *mg = CORO_MAGIC (cv); 396 MAGIC *mg = CORO_MAGIC (cv);
290 AV *av; 397 AV *av;
291 398
292 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 399 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
293 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 400 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
294 else 401 else
295 { 402 {
296#if CORO_PREFER_PERL_FUNCTIONS 403#if CORO_PREFER_PERL_FUNCTIONS
297 /* this is probably cleaner, but also slower? */ 404 /* this is probably cleaner, but also slower? */
… …
309put_padlist (pTHX_ CV *cv) 416put_padlist (pTHX_ CV *cv)
310{ 417{
311 MAGIC *mg = CORO_MAGIC (cv); 418 MAGIC *mg = CORO_MAGIC (cv);
312 AV *av; 419 AV *av;
313 420
314 if (!mg) 421 if (expect_false (!mg))
315 { 422 {
316 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); 423 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
317 mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 424 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
318 mg->mg_virtual = &vtbl_coro; 425 mg->mg_virtual = &vtbl_coro;
319 mg->mg_obj = (SV *)newAV (); 426 mg->mg_obj = (SV *)newAV ();
320 } 427 }
321 428
322 av = (AV *)mg->mg_obj; 429 av = (AV *)mg->mg_obj;
323 430
324 if (AvFILLp (av) >= AvMAX (av)) 431 if (expect_false (AvFILLp (av) >= AvMAX (av)))
325 av_extend (av, AvMAX (av) + 1); 432 av_extend (av, AvMAX (av) + 1);
326 433
327 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 434 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
328} 435}
329 436
330/** load & save, init *******************************************************/ 437/** load & save, init *******************************************************/
331 438
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
337static void 439static void
338load_perl (pTHX_ Coro__State c) 440load_perl (pTHX_ Coro__State c)
339{ 441{
442 perl_slots *slot = c->slot;
443 c->slot = 0;
444
445 PL_mainstack = c->mainstack;
446
447 GvSV (PL_defgv) = slot->defsv;
448 GvAV (PL_defgv) = slot->defav;
449 GvSV (PL_errgv) = slot->errsv;
450 GvSV (irsgv) = slot->irsgv;
451
340#define VAR(name,type) PL_ ## name = c->name; 452 #define VAR(name,type) PL_ ## name = slot->name;
341# include "state.h" 453 # include "state.h"
342#undef VAR 454 #undef VAR
343 455
344 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 456 /*hv_store (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, SvREFCNT_inc (sv_diehook ), 0);*/
345 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 457 /*hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, SvREFCNT_inc (sv_warnhook), 0);*/
346 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
347 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
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 }
363 458
364 { 459 {
365 dSP; 460 dSP;
461
366 CV *cv; 462 CV *cv;
367 463
368 /* now do the ugly restore mess */ 464 /* now do the ugly restore mess */
369 while ((cv = (CV *)POPs)) 465 while (expect_true (cv = (CV *)POPs))
370 { 466 {
371 put_padlist (aTHX_ cv); /* mark this padlist as available */ 467 put_padlist (aTHX_ cv); /* mark this padlist as available */
372 CvDEPTH (cv) = PTR2IV (POPs); 468 CvDEPTH (cv) = PTR2IV (POPs);
373 CvPADLIST (cv) = (AV *)POPs; 469 CvPADLIST (cv) = (AV *)POPs;
374 } 470 }
375 471
376 PUTBACK; 472 PUTBACK;
377 } 473 }
378 assert (!PL_comppad || AvARRAY (PL_comppad));//D
379} 474}
380 475
381static void 476static void
382save_perl (pTHX_ Coro__State c) 477save_perl (pTHX_ Coro__State c)
383{ 478{
384 assert (!PL_comppad || AvARRAY (PL_comppad));//D
385 { 479 {
386 dSP; 480 dSP;
387 I32 cxix = cxstack_ix; 481 I32 cxix = cxstack_ix;
388 PERL_CONTEXT *ccstk = cxstack; 482 PERL_CONTEXT *ccstk = cxstack;
389 PERL_SI *top_si = PL_curstackinfo; 483 PERL_SI *top_si = PL_curstackinfo;
… …
391 /* 485 /*
392 * the worst thing you can imagine happens first - we have to save 486 * the worst thing you can imagine happens first - we have to save
393 * (and reinitialize) all cv's in the whole callchain :( 487 * (and reinitialize) all cv's in the whole callchain :(
394 */ 488 */
395 489
396 EXTEND (SP, 3 + 1);
397 PUSHs (Nullsv); 490 XPUSHs (Nullsv);
398 /* this loop was inspired by pp_caller */ 491 /* this loop was inspired by pp_caller */
399 for (;;) 492 for (;;)
400 { 493 {
401 while (cxix >= 0) 494 while (expect_true (cxix >= 0))
402 { 495 {
403 PERL_CONTEXT *cx = &ccstk[cxix--]; 496 PERL_CONTEXT *cx = &ccstk[cxix--];
404 497
405 if (CxTYPE (cx) == CXt_SUB) 498 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
406 { 499 {
407 CV *cv = cx->blk_sub.cv; 500 CV *cv = cx->blk_sub.cv;
408 501
409 if (CvDEPTH (cv)) 502 if (expect_true (CvDEPTH (cv)))
410 { 503 {
411 EXTEND (SP, 3); 504 EXTEND (SP, 3);
412 PUSHs ((SV *)CvPADLIST (cv)); 505 PUSHs ((SV *)CvPADLIST (cv));
413 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 506 PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
414 PUSHs ((SV *)cv); 507 PUSHs ((SV *)cv);
… …
417 get_padlist (aTHX_ cv); 510 get_padlist (aTHX_ cv);
418 } 511 }
419 } 512 }
420 } 513 }
421 514
422 if (top_si->si_type == PERLSI_MAIN) 515 if (expect_true (top_si->si_type == PERLSI_MAIN))
423 break; 516 break;
424 517
425 top_si = top_si->si_prev; 518 top_si = top_si->si_prev;
426 ccstk = top_si->si_cxstack; 519 ccstk = top_si->si_cxstack;
427 cxix = top_si->si_cxix; 520 cxix = top_si->si_cxix;
428 } 521 }
429 522
430 PUTBACK; 523 PUTBACK;
431 } 524 }
432 525
433 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 526 /* allocate some space on the context stack for our purposes */
434 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 527 /* we manually unroll here, as usually 2 slots is enough */
435 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 528 if (SLOT_COUNT >= 1) CXINC;
436 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 529 if (SLOT_COUNT >= 2) CXINC;
437 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 530 if (SLOT_COUNT >= 3) CXINC;
531 {
532 int i;
533 for (i = 3; i < SLOT_COUNT; ++i)
534 CXINC;
535 }
536 cxstack_ix -= SLOT_COUNT; /* undo allocation */
438 537
538 c->mainstack = PL_mainstack;
539
540 {
541 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
542
543 slot->defav = GvAV (PL_defgv);
544 slot->defsv = DEFSV;
545 slot->errsv = ERRSV;
546 slot->irsgv = GvSV (irsgv);
547
439#define VAR(name,type)c->name = PL_ ## name; 548 #define VAR(name,type) slot->name = PL_ ## name;
440# include "state.h" 549 # include "state.h"
441#undef VAR 550 #undef VAR
551 }
442} 552}
443 553
444/* 554/*
445 * allocate various perl stacks. This is an exact copy 555 * allocate various perl stacks. This is an exact copy
446 * of perl.c:init_stacks, except that it uses less memory 556 * of perl.c:init_stacks, except that it uses less memory
… …
451# define coro_init_stacks init_stacks 561# define coro_init_stacks init_stacks
452#else 562#else
453static void 563static void
454coro_init_stacks (pTHX) 564coro_init_stacks (pTHX)
455{ 565{
456 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 566 PL_curstackinfo = new_stackinfo(32, 8);
457 PL_curstackinfo->si_type = PERLSI_MAIN; 567 PL_curstackinfo->si_type = PERLSI_MAIN;
458 PL_curstack = PL_curstackinfo->si_stack; 568 PL_curstack = PL_curstackinfo->si_stack;
459 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 569 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
460 570
461 PL_stack_base = AvARRAY(PL_curstack); 571 PL_stack_base = AvARRAY(PL_curstack);
462 PL_stack_sp = PL_stack_base; 572 PL_stack_sp = PL_stack_base;
463 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 573 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
464 574
465 New(50,PL_tmps_stack,128,SV*); 575 New(50,PL_tmps_stack,32,SV*);
466 PL_tmps_floor = -1; 576 PL_tmps_floor = -1;
467 PL_tmps_ix = -1; 577 PL_tmps_ix = -1;
468 PL_tmps_max = 128; 578 PL_tmps_max = 32;
469 579
470 New(54,PL_markstack,32,I32); 580 New(54,PL_markstack,16,I32);
471 PL_markstack_ptr = PL_markstack; 581 PL_markstack_ptr = PL_markstack;
472 PL_markstack_max = PL_markstack + 32; 582 PL_markstack_max = PL_markstack + 16;
473 583
474#ifdef SET_MARK_OFFSET 584#ifdef SET_MARK_OFFSET
475 SET_MARK_OFFSET; 585 SET_MARK_OFFSET;
476#endif 586#endif
477 587
478 New(54,PL_scopestack,32,I32); 588 New(54,PL_scopestack,8,I32);
479 PL_scopestack_ix = 0; 589 PL_scopestack_ix = 0;
480 PL_scopestack_max = 32; 590 PL_scopestack_max = 8;
481 591
482 New(54,PL_savestack,64,ANY); 592 New(54,PL_savestack,24,ANY);
483 PL_savestack_ix = 0; 593 PL_savestack_ix = 0;
484 PL_savestack_max = 64; 594 PL_savestack_max = 24;
485 595
486#if !PERL_VERSION_ATLEAST (5,9,0) 596#if !PERL_VERSION_ATLEAST (5,9,0)
487 New(54,PL_retstack,16,OP*); 597 New(54,PL_retstack,4,OP*);
488 PL_retstack_ix = 0; 598 PL_retstack_ix = 0;
489 PL_retstack_max = 16; 599 PL_retstack_max = 4;
490#endif 600#endif
491} 601}
492#endif 602#endif
493 603
494/* 604/*
495 * destroy the stacks, the callchain etc... 605 * destroy the stacks, the callchain etc...
496 */ 606 */
497static void 607static void
498coro_destroy_stacks (pTHX) 608coro_destroy_stacks (pTHX)
499{ 609{
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) 610 while (PL_curstackinfo->si_next)
518 PL_curstackinfo = PL_curstackinfo->si_next; 611 PL_curstackinfo = PL_curstackinfo->si_next;
519 612
520 while (PL_curstackinfo) 613 while (PL_curstackinfo)
521 { 614 {
… …
536#if !PERL_VERSION_ATLEAST (5,9,0) 629#if !PERL_VERSION_ATLEAST (5,9,0)
537 Safefree (PL_retstack); 630 Safefree (PL_retstack);
538#endif 631#endif
539} 632}
540 633
634static size_t
635coro_rss (pTHX_ struct coro *coro)
636{
637 size_t rss = sizeof (*coro);
638
639 if (coro->mainstack)
640 {
641 perl_slots tmp_slot;
642 perl_slots *slot;
643
644 if (coro->flags & CF_RUNNING)
645 {
646 slot = &tmp_slot;
647
648 #define VAR(name,type) slot->name = PL_ ## name;
649 # include "state.h"
650 #undef VAR
651 }
652 else
653 slot = coro->slot;
654
655 rss += sizeof (slot->curstackinfo);
656 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
657 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
658 rss += slot->tmps_max * sizeof (SV *);
659 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
660 rss += slot->scopestack_max * sizeof (I32);
661 rss += slot->savestack_max * sizeof (ANY);
662
663#if !PERL_VERSION_ATLEAST (5,9,0)
664 rss += slot->retstack_max * sizeof (OP *);
665#endif
666 }
667
668 return rss;
669}
670
541/** coroutine stack handling ************************************************/ 671/** coroutine stack handling ************************************************/
542 672
543static void 673static void
544setup_coro (pTHX_ struct coro *coro) 674coro_setup (pTHX_ struct coro *coro)
545{ 675{
546 /* 676 /*
547 * emulate part of the perl startup here. 677 * emulate part of the perl startup here.
548 */ 678 */
549 coro_init_stacks (aTHX); 679 coro_init_stacks (aTHX);
550 680
681 PL_runops = RUNOPS_DEFAULT;
551 PL_curcop = &PL_compiling; 682 PL_curcop = &PL_compiling;
552 PL_in_eval = EVAL_NULL; 683 PL_in_eval = EVAL_NULL;
553 PL_comppad = 0; 684 PL_comppad = 0;
554 PL_curpm = 0; 685 PL_curpm = 0;
686 PL_curpad = 0;
555 PL_localizing = 0; 687 PL_localizing = 0;
556 PL_dirty = 0; 688 PL_dirty = 0;
557 PL_restartop = 0; 689 PL_restartop = 0;
690 PL_diehook = 0; hv_store (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, SvREFCNT_inc (sv_diehook ), 0);
691 PL_warnhook = 0; hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, SvREFCNT_inc (sv_warnhook), 0);
692
693 GvSV (PL_defgv) = newSV (0);
694 GvAV (PL_defgv) = coro->args; coro->args = 0;
695 GvSV (PL_errgv) = newSV (0);
696 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
697 PL_rs = newSVsv (GvSV (irsgv));
698 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
558 699
559 { 700 {
560 dSP; 701 dSP;
561 LOGOP myop; 702 LOGOP myop;
562 703
563 SvREFCNT_dec (GvAV (PL_defgv));
564 GvAV (PL_defgv) = coro->args; coro->args = 0;
565
566 Zero (&myop, 1, LOGOP); 704 Zero (&myop, 1, LOGOP);
567 myop.op_next = Nullop; 705 myop.op_next = Nullop;
568 myop.op_flags = OPf_WANT_VOID; 706 myop.op_flags = OPf_WANT_VOID;
569 707
570 PUSHMARK (SP); 708 PUSHMARK (SP);
571 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 709 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
572 PUTBACK; 710 PUTBACK;
573 PL_op = (OP *)&myop; 711 PL_op = (OP *)&myop;
574 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 712 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575 SPAGAIN; 713 SPAGAIN;
576 } 714 }
577 715
578 ENTER; /* necessary e.g. for dounwind */ 716 /* this newly created coroutine might be run on an existing cctx which most
717 * likely was suspended in set_stacklevel, called from entersub.
718 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
719 * so we ENTER here for symmetry
720 */
721 ENTER;
722}
723
724static void
725coro_destroy (pTHX_ struct coro *coro)
726{
727 if (!IN_DESTRUCT)
728 {
729 /* restore all saved variables and stuff */
730 LEAVE_SCOPE (0);
731 assert (PL_tmps_floor == -1);
732
733 /* free all temporaries */
734 FREETMPS;
735 assert (PL_tmps_ix == -1);
736
737 /* unwind all extra stacks */
738 POPSTACK_TO (PL_mainstack);
739
740 /* unwind main stack */
741 dounwind (-1);
742 }
743
744 SvREFCNT_dec (GvSV (PL_defgv));
745 SvREFCNT_dec (GvAV (PL_defgv));
746 SvREFCNT_dec (GvSV (PL_errgv));
747 SvREFCNT_dec (PL_defoutgv);
748 SvREFCNT_dec (PL_rs);
749 SvREFCNT_dec (GvSV (irsgv));
750
751 SvREFCNT_dec (PL_diehook);
752 SvREFCNT_dec (PL_warnhook);
753
754 SvREFCNT_dec (coro->saved_deffh);
755 SvREFCNT_dec (coro->throw);
756
757 coro_destroy_stacks (aTHX);
579} 758}
580 759
581static void 760static void
582free_coro_mortal (pTHX) 761free_coro_mortal (pTHX)
583{ 762{
584 if (coro_mortal) 763 if (expect_true (coro_mortal))
585 { 764 {
586 SvREFCNT_dec (coro_mortal); 765 SvREFCNT_dec (coro_mortal);
587 coro_mortal = 0; 766 coro_mortal = 0;
588 } 767 }
589} 768}
590 769
770static int
771runops_trace (pTHX)
772{
773 COP *oldcop = 0;
774 int oldcxix = -2;
775 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
776 coro_cctx *cctx = coro->cctx;
777
778 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
779 {
780 PERL_ASYNC_CHECK ();
781
782 if (cctx->flags & CC_TRACE_ALL)
783 {
784 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
785 {
786 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
787 SV **bot, **top;
788 AV *av = newAV (); /* return values */
789 SV **cb;
790 dSP;
791
792 GV *gv = CvGV (cx->blk_sub.cv);
793 SV *fullname = sv_2mortal (newSV (0));
794 if (isGV (gv))
795 gv_efullname3 (fullname, gv, 0);
796
797 bot = PL_stack_base + cx->blk_oldsp + 1;
798 top = cx->blk_gimme == G_ARRAY ? SP + 1
799 : cx->blk_gimme == G_SCALAR ? bot + 1
800 : bot;
801
802 av_extend (av, top - bot);
803 while (bot < top)
804 av_push (av, SvREFCNT_inc (*bot++));
805
806 PL_runops = RUNOPS_DEFAULT;
807 ENTER;
808 SAVETMPS;
809 EXTEND (SP, 3);
810 PUSHMARK (SP);
811 PUSHs (&PL_sv_no);
812 PUSHs (fullname);
813 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
814 PUTBACK;
815 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
816 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
817 SPAGAIN;
818 FREETMPS;
819 LEAVE;
820 PL_runops = runops_trace;
821 }
822
823 if (oldcop != PL_curcop)
824 {
825 oldcop = PL_curcop;
826
827 if (PL_curcop != &PL_compiling)
828 {
829 SV **cb;
830
831 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
832 {
833 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
834
835 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
836 {
837 runops_proc_t old_runops = PL_runops;
838 dSP;
839 GV *gv = CvGV (cx->blk_sub.cv);
840 SV *fullname = sv_2mortal (newSV (0));
841
842 if (isGV (gv))
843 gv_efullname3 (fullname, gv, 0);
844
845 PL_runops = RUNOPS_DEFAULT;
846 ENTER;
847 SAVETMPS;
848 EXTEND (SP, 3);
849 PUSHMARK (SP);
850 PUSHs (&PL_sv_yes);
851 PUSHs (fullname);
852 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
853 PUTBACK;
854 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
855 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
856 SPAGAIN;
857 FREETMPS;
858 LEAVE;
859 PL_runops = runops_trace;
860 }
861
862 oldcxix = cxstack_ix;
863 }
864
865 if (cctx->flags & CC_TRACE_LINE)
866 {
867 dSP;
868
869 PL_runops = RUNOPS_DEFAULT;
870 ENTER;
871 SAVETMPS;
872 EXTEND (SP, 3);
873 PL_runops = RUNOPS_DEFAULT;
874 PUSHMARK (SP);
875 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
876 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
877 PUTBACK;
878 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
879 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
880 SPAGAIN;
881 FREETMPS;
882 LEAVE;
883 PL_runops = runops_trace;
884 }
885 }
886 }
887 }
888 }
889
890 TAINT_NOT;
891 return 0;
892}
893
591/* inject a fake call to Coro::State::_cctx_init into the execution */ 894/* inject a fake call to Coro::State::_cctx_init into the execution */
895/* _cctx_init should be careful, as it could be called at almost any time */
896/* during execution of a perl program */
592static void NOINLINE 897static void NOINLINE
593prepare_cctx (pTHX_ coro_cctx *cctx) 898cctx_prepare (pTHX_ coro_cctx *cctx)
594{ 899{
595 dSP; 900 dSP;
596 LOGOP myop; 901 LOGOP myop;
902
903 PL_top_env = &PL_start_env;
904
905 if (cctx->flags & CC_TRACE)
906 PL_runops = runops_trace;
597 907
598 Zero (&myop, 1, LOGOP); 908 Zero (&myop, 1, LOGOP);
599 myop.op_next = PL_op; 909 myop.op_next = PL_op;
600 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 910 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
601 911
… …
607 PL_op = (OP *)&myop; 917 PL_op = (OP *)&myop;
608 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 918 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
609 SPAGAIN; 919 SPAGAIN;
610} 920}
611 921
922/*
923 * this is a _very_ stripped down perl interpreter ;)
924 */
612static void 925static void
613coro_run (void *arg) 926cctx_run (void *arg)
614{ 927{
615 dTHX; 928 dTHX;
616 929
617 /* coro_run is the alternative tail of transfer(), so unlock here. */ 930 /* cctx_run is the alternative tail of transfer(), so unlock here. */
618 UNLOCK; 931 UNLOCK;
619 932
620 /* 933 /* we now skip the entersub that lead to transfer() */
621 * this is a _very_ stripped down perl interpreter ;) 934 PL_op = PL_op->op_next;
622 */
623 PL_top_env = &PL_start_env;
624 935
625 /* inject call to cctx_init */ 936 /* inject a fake subroutine call to cctx_init */
626 prepare_cctx (aTHX_ (coro_cctx *)arg); 937 cctx_prepare (aTHX_ (coro_cctx *)arg);
627 938
628 /* somebody will hit me for both perl_run and PL_restartop */ 939 /* somebody or something will hit me for both perl_run and PL_restartop */
629 PL_restartop = PL_op; 940 PL_restartop = PL_op;
630 perl_run (PL_curinterp); 941 perl_run (PL_curinterp);
631 942
632 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 943 /*
633 abort (); 944 * If perl-run returns we assume exit() was being called or the coro
945 * fell off the end, which seems to be the only valid (non-bug)
946 * reason for perl_run to return. We try to exit by jumping to the
947 * bootstrap-time "top" top_env, as we cannot restore the "main"
948 * coroutine as Coro has no such concept
949 */
950 PL_top_env = main_top_env;
951 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
634} 952}
635 953
636static coro_cctx * 954static coro_cctx *
637cctx_new () 955cctx_new ()
638{ 956{
… …
643 ++cctx_count; 961 ++cctx_count;
644 962
645 Newz (0, cctx, 1, coro_cctx); 963 Newz (0, cctx, 1, coro_cctx);
646 964
647#if HAVE_MMAP 965#if HAVE_MMAP
648
649 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 966 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
650 /* mmap supposedly does allocate-on-write for us */ 967 /* mmap supposedly does allocate-on-write for us */
651 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 968 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
652 969
653 if (cctx->sptr != (void *)-1) 970 if (cctx->sptr != (void *)-1)
… …
655# if CORO_STACKGUARD 972# if CORO_STACKGUARD
656 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 973 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
657# endif 974# endif
658 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 975 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
659 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 976 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
660 cctx->mapped = 1; 977 cctx->flags |= CC_MAPPED;
661 } 978 }
662 else 979 else
663#endif 980#endif
664 { 981 {
665 cctx->ssize = coro_stacksize * (long)sizeof (long); 982 cctx->ssize = coro_stacksize * (long)sizeof (long);
… …
674 stack_start = cctx->sptr; 991 stack_start = cctx->sptr;
675 stack_size = cctx->ssize; 992 stack_size = cctx->ssize;
676 } 993 }
677 994
678 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 995 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
679 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 996 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
680 997
681 return cctx; 998 return cctx;
682} 999}
683 1000
684static void 1001static void
… …
692#if CORO_USE_VALGRIND 1009#if CORO_USE_VALGRIND
693 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1010 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694#endif 1011#endif
695 1012
696#if HAVE_MMAP 1013#if HAVE_MMAP
697 if (cctx->mapped) 1014 if (cctx->flags & CC_MAPPED)
698 munmap (cctx->sptr, cctx->ssize); 1015 munmap (cctx->sptr, cctx->ssize);
699 else 1016 else
700#endif 1017#endif
701 Safefree (cctx->sptr); 1018 Safefree (cctx->sptr);
702 1019
703 Safefree (cctx); 1020 Safefree (cctx);
704} 1021}
705 1022
1023/* wether this cctx should be destructed */
1024#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1025
706static coro_cctx * 1026static coro_cctx *
707cctx_get (pTHX) 1027cctx_get (pTHX)
708{ 1028{
709 while (cctx_first) 1029 while (expect_true (cctx_first))
710 { 1030 {
711 coro_cctx *cctx = cctx_first; 1031 coro_cctx *cctx = cctx_first;
712 cctx_first = cctx->next; 1032 cctx_first = cctx->next;
713 --cctx_idle; 1033 --cctx_idle;
714 1034
715 if (cctx->ssize >= coro_stacksize) 1035 if (expect_true (!CCTX_EXPIRED (cctx)))
716 return cctx; 1036 return cctx;
717 1037
718 cctx_destroy (cctx); 1038 cctx_destroy (cctx);
719 } 1039 }
720 1040
721 PL_op = PL_op->op_next;
722 return cctx_new (); 1041 return cctx_new ();
723} 1042}
724 1043
725static void 1044static void
726cctx_put (coro_cctx *cctx) 1045cctx_put (coro_cctx *cctx)
727{ 1046{
728 /* free another cctx if overlimit */ 1047 /* free another cctx if overlimit */
729 if (cctx_idle >= MAX_IDLE_CCTX) 1048 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
730 { 1049 {
731 coro_cctx *first = cctx_first; 1050 coro_cctx *first = cctx_first;
732 cctx_first = first->next; 1051 cctx_first = first->next;
733 --cctx_idle; 1052 --cctx_idle;
734 1053
735 assert (!first->inuse);
736 cctx_destroy (first); 1054 cctx_destroy (first);
737 } 1055 }
738 1056
739 ++cctx_idle; 1057 ++cctx_idle;
740 cctx->next = cctx_first; 1058 cctx->next = cctx_first;
741 cctx_first = cctx; 1059 cctx_first = cctx;
742} 1060}
743 1061
744/** coroutine switching *****************************************************/ 1062/** coroutine switching *****************************************************/
745 1063
746/* never call directly, always through the coro_state_transfer global variable */ 1064static void
1065transfer_check (pTHX_ struct coro *prev, struct coro *next)
1066{
1067 if (expect_true (prev != next))
1068 {
1069 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1070 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1071
1072 if (expect_false (next->flags & CF_RUNNING))
1073 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1074
1075 if (expect_false (next->flags & CF_DESTROYED))
1076 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1077
1078 if (
1079#if PERL_VERSION_ATLEAST (5,9,0)
1080 expect_false (PL_parser)
1081#else
1082 expect_false (PL_lex_state != LEX_NOTPARSING)
1083#endif
1084 )
1085 croak ("Coro::State::transfer called while parsing, but this is not supported");
1086 }
1087}
1088
1089/* always use the TRANSFER macro */
747static void NOINLINE 1090static void NOINLINE
748transfer (pTHX_ struct coro *prev, struct coro *next) 1091transfer (pTHX_ struct coro *prev, struct coro *next)
749{ 1092{
750 dSTACKLEVEL; 1093 dSTACKLEVEL;
751 1094
752 /* sometimes transfer is only called to set idle_sp */ 1095 /* sometimes transfer is only called to set idle_sp */
753 if (!next) 1096 if (expect_false (!next))
754 { 1097 {
755 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1098 ((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 */ 1099 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
757 } 1100 }
758 else if (prev != next) 1101 else if (expect_true (prev != next))
759 { 1102 {
760 coro_cctx *prev__cctx; 1103 coro_cctx *prev__cctx;
761 1104
762 if (prev->flags & CF_NEW) 1105 if (expect_false (prev->flags & CF_NEW))
763 { 1106 {
764 /* create a new empty context */ 1107 /* create a new empty context */
765 Newz (0, prev->cctx, 1, coro_cctx); 1108 Newz (0, prev->cctx, 1, coro_cctx);
766 prev->cctx->inuse = 1;
767 prev->flags &= ~CF_NEW; 1109 prev->flags &= ~CF_NEW;
768 prev->flags |= CF_RUNNING; 1110 prev->flags |= CF_RUNNING;
769 } 1111 }
770 1112
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; 1113 prev->flags &= ~CF_RUNNING;
782 next->flags |= CF_RUNNING; 1114 next->flags |= CF_RUNNING;
783 1115
784 LOCK; 1116 LOCK;
785 1117
786 if (next->flags & CF_NEW) 1118 if (expect_false (next->flags & CF_NEW))
787 { 1119 {
788 /* need to start coroutine */ 1120 /* need to start coroutine */
789 next->flags &= ~CF_NEW; 1121 next->flags &= ~CF_NEW;
790 /* first get rid of the old state */ 1122 /* first get rid of the old state */
791 save_perl (aTHX_ prev); 1123 save_perl (aTHX_ prev);
792 /* setup coroutine call */ 1124 /* setup coroutine call */
793 setup_coro (aTHX_ next); 1125 coro_setup (aTHX_ next);
794 /* need a new stack */
795 assert (!next->cctx);
796 } 1126 }
797 else 1127 else
798 { 1128 {
799 /* coroutine already started */ 1129 /* coroutine already started */
800 save_perl (aTHX_ prev); 1130 save_perl (aTHX_ prev);
… …
802 } 1132 }
803 1133
804 prev__cctx = prev->cctx; 1134 prev__cctx = prev->cctx;
805 1135
806 /* possibly "free" the cctx */ 1136 /* possibly "free" the cctx */
807 if (prev__cctx->idle_sp == STACKLEVEL) 1137 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
808 { 1138 {
809 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1139 /* 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)); 1140 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
811 1141
812 prev->cctx = 0; 1142 prev->cctx = 0;
813 1143
1144 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1145 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1146 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1147 if (!next->cctx)
1148 next->cctx = cctx_get (aTHX);
1149
814 cctx_put (prev__cctx); 1150 cctx_put (prev__cctx);
815 prev__cctx->inuse = 0;
816 } 1151 }
817 1152
1153 ++next->usecount;
1154
818 if (!next->cctx) 1155 if (expect_true (!next->cctx))
819 {
820 next->cctx = cctx_get (aTHX); 1156 next->cctx = cctx_get (aTHX);
821 assert (!next->cctx->inuse);
822 next->cctx->inuse = 1;
823 }
824 1157
825 if (prev__cctx != next->cctx) 1158 if (expect_false (prev__cctx != next->cctx))
826 { 1159 {
827 prev__cctx->top_env = PL_top_env; 1160 prev__cctx->top_env = PL_top_env;
828 PL_top_env = next->cctx->top_env; 1161 PL_top_env = next->cctx->top_env;
829 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1162 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
830 } 1163 }
831 1164
832 free_coro_mortal (aTHX); 1165 free_coro_mortal (aTHX);
833 UNLOCK; 1166 UNLOCK;
1167
1168 if (expect_false (prev->throw || next->throw))
1169 {
1170 struct coro *coro = SvSTATE (coro_current);
1171
1172 if (coro->throw)
1173 {
1174 SV *exception = coro->throw;
1175 coro->throw = 0;
1176 sv_setsv (ERRSV, exception);
1177 croak (0);
1178 }
1179 }
834 } 1180 }
835} 1181}
836 1182
837struct transfer_args 1183struct transfer_args
838{ 1184{
839 struct coro *prev, *next; 1185 struct coro *prev, *next;
840}; 1186};
841 1187
842#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1188#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
1189#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
843 1190
844/** high level stuff ********************************************************/ 1191/** high level stuff ********************************************************/
845 1192
846static int 1193static int
847coro_state_destroy (pTHX_ struct coro *coro) 1194coro_state_destroy (pTHX_ struct coro *coro)
… …
864 1211
865 if (coro->mainstack && coro->mainstack != main_mainstack) 1212 if (coro->mainstack && coro->mainstack != main_mainstack)
866 { 1213 {
867 struct coro temp; 1214 struct coro temp;
868 1215
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) 1216 if (coro->flags & CF_RUNNING)
875 croak ("FATAL: tried to destroy currently running coroutine"); 1217 croak ("FATAL: tried to destroy currently running coroutine");
876 1218
877 save_perl (aTHX_ &temp); 1219 save_perl (aTHX_ &temp);
878 load_perl (aTHX_ coro); 1220 load_perl (aTHX_ coro);
879 1221
880 coro_destroy_stacks (aTHX); 1222 coro_destroy (aTHX_ coro);
881 1223
882 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1224 load_perl (aTHX_ &temp);
883 1225
884 coro->mainstack = 0; 1226 coro->slot = 0;
885 } 1227 }
886 1228
887 cctx_destroy (coro->cctx); 1229 cctx_destroy (coro->cctx);
888 SvREFCNT_dec (coro->args); 1230 SvREFCNT_dec (coro->args);
889 1231
1232 if (coro->next) coro->next->prev = coro->prev;
1233 if (coro->prev) coro->prev->next = coro->next;
1234 if (coro == coro_first) coro_first = coro->next;
1235
890 return 1; 1236 return 1;
891} 1237}
892 1238
893static int 1239static int
894coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1240coro_state_free (pTHX_ SV *sv, MAGIC *mg)
895{ 1241{
896 struct coro *coro = (struct coro *)mg->mg_ptr; 1242 struct coro *coro = (struct coro *)mg->mg_ptr;
897 mg->mg_ptr = 0; 1243 mg->mg_ptr = 0;
1244
1245 coro->hv = 0;
898 1246
899 if (--coro->refcnt < 0) 1247 if (--coro->refcnt < 0)
900 { 1248 {
901 coro_state_destroy (aTHX_ coro); 1249 coro_state_destroy (aTHX_ coro);
902 Safefree (coro); 1250 Safefree (coro);
… …
924#else 1272#else
925# define MGf_DUP 0 1273# define MGf_DUP 0
926#endif 1274#endif
927}; 1275};
928 1276
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 1277static void
953prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1278prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
954{ 1279{
955 ta->prev = SvSTATE (prev_sv); 1280 ta->prev = SvSTATE (prev_sv);
956 ta->next = SvSTATE (next_sv); 1281 ta->next = SvSTATE (next_sv);
1282 TRANSFER_CHECK (*ta);
957} 1283}
958 1284
959static void 1285static void
960api_transfer (SV *prev_sv, SV *next_sv) 1286api_transfer (SV *prev_sv, SV *next_sv)
961{ 1287{
962 dTHX; 1288 dTHX;
963 struct transfer_args ta; 1289 struct transfer_args ta;
964 1290
965 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1291 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
966 TRANSFER (ta); 1292 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} 1293}
981 1294
982/** Coro ********************************************************************/ 1295/** Coro ********************************************************************/
983 1296
984static void 1297static void
… …
1043 { 1356 {
1044 LOCK; 1357 LOCK;
1045 next_sv = coro_deq (aTHX_ PRIO_MIN); 1358 next_sv = coro_deq (aTHX_ PRIO_MIN);
1046 1359
1047 /* nothing to schedule: call the idle handler */ 1360 /* nothing to schedule: call the idle handler */
1048 if (!next_sv) 1361 if (expect_false (!next_sv))
1049 { 1362 {
1050 dSP; 1363 dSP;
1051 UNLOCK; 1364 UNLOCK;
1052 1365
1053 ENTER; 1366 ENTER;
… …
1063 } 1376 }
1064 1377
1065 ta->next = SvSTATE (next_sv); 1378 ta->next = SvSTATE (next_sv);
1066 1379
1067 /* cannot transfer to destroyed coros, skip and look for next */ 1380 /* cannot transfer to destroyed coros, skip and look for next */
1068 if (ta->next->flags & CF_DESTROYED) 1381 if (expect_false (ta->next->flags & CF_DESTROYED))
1069 { 1382 {
1070 UNLOCK; 1383 UNLOCK;
1071 SvREFCNT_dec (next_sv); 1384 SvREFCNT_dec (next_sv);
1072 /* coro_nready is already taken care of by destroy */ 1385 /* coro_nready is already taken care of by destroy */
1073 continue; 1386 continue;
… …
1078 break; 1391 break;
1079 } 1392 }
1080 1393
1081 /* free this only after the transfer */ 1394 /* free this only after the transfer */
1082 prev_sv = SvRV (coro_current); 1395 prev_sv = SvRV (coro_current);
1083 SvRV_set (coro_current, next_sv);
1084 ta->prev = SvSTATE (prev_sv); 1396 ta->prev = SvSTATE (prev_sv);
1085 1397 TRANSFER_CHECK (*ta);
1086 assert (ta->next->flags & CF_READY); 1398 assert (ta->next->flags & CF_READY);
1087 ta->next->flags &= ~CF_READY; 1399 ta->next->flags &= ~CF_READY;
1400 SvRV_set (coro_current, next_sv);
1088 1401
1089 LOCK; 1402 LOCK;
1090 free_coro_mortal (aTHX); 1403 free_coro_mortal (aTHX);
1091 coro_mortal = prev_sv; 1404 coro_mortal = prev_sv;
1092 UNLOCK; 1405 UNLOCK;
… …
1129 dTHX; 1442 dTHX;
1130 struct transfer_args ta; 1443 struct transfer_args ta;
1131 1444
1132 prepare_cede (aTHX_ &ta); 1445 prepare_cede (aTHX_ &ta);
1133 1446
1134 if (ta.prev != ta.next) 1447 if (expect_true (ta.prev != ta.next))
1135 { 1448 {
1136 TRANSFER (ta); 1449 TRANSFER (ta);
1137 return 1; 1450 return 1;
1138 } 1451 }
1139 else 1452 else
… …
1153 } 1466 }
1154 else 1467 else
1155 return 0; 1468 return 0;
1156} 1469}
1157 1470
1471static void
1472api_trace (SV *coro_sv, int flags)
1473{
1474 dTHX;
1475 struct coro *coro = SvSTATE (coro_sv);
1476
1477 if (flags & CC_TRACE)
1478 {
1479 if (!coro->cctx)
1480 coro->cctx = cctx_new ();
1481 else if (!(coro->cctx->flags & CC_TRACE))
1482 croak ("cannot enable tracing on coroutine with custom stack");
1483
1484 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1485 }
1486 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1487 {
1488 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1489
1490 if (coro->flags & CF_RUNNING)
1491 PL_runops = RUNOPS_DEFAULT;
1492 else
1493 coro->slot->runops = RUNOPS_DEFAULT;
1494 }
1495}
1496
1158MODULE = Coro::State PACKAGE = Coro::State 1497MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1159 1498
1160PROTOTYPES: DISABLE 1499PROTOTYPES: DISABLE
1161 1500
1162BOOT: 1501BOOT:
1163{ 1502{
1164#ifdef USE_ITHREADS 1503#ifdef USE_ITHREADS
1165 MUTEX_INIT (&coro_mutex); 1504 MUTEX_INIT (&coro_mutex);
1166#endif 1505#endif
1167 BOOT_PAGESIZE; 1506 BOOT_PAGESIZE;
1168 1507
1508 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1509 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1510
1511 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1512 sv_diehook = coro_get_sv (aTHX_ "Coro::State::DIEHOOK" , TRUE);
1513 sv_warnhook = coro_get_sv (aTHX_ "Coro::State::WARNHOOK", TRUE);
1514
1515 if (!PL_diehook ) hv_store (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, SvREFCNT_inc (sv_diehook ), 0);
1516 if (!PL_warnhook) hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, SvREFCNT_inc (sv_warnhook), 0);
1517
1169 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1518 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1170 1519
1171 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1520 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1172 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 1521 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)); 1522 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1177 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1523 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1178 1524
1179 main_mainstack = PL_mainstack; 1525 main_mainstack = PL_mainstack;
1526 main_top_env = PL_top_env;
1527
1528 while (main_top_env->je_prev)
1529 main_top_env = main_top_env->je_prev;
1180 1530
1181 coroapi.ver = CORO_API_VERSION; 1531 coroapi.ver = CORO_API_VERSION;
1532 coroapi.rev = CORO_API_REVISION;
1182 coroapi.transfer = api_transfer; 1533 coroapi.transfer = api_transfer;
1183 1534
1184 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1535 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1185} 1536}
1186 1537
… …
1191 struct coro *coro; 1542 struct coro *coro;
1192 HV *hv; 1543 HV *hv;
1193 int i; 1544 int i;
1194 1545
1195 Newz (0, coro, 1, struct coro); 1546 Newz (0, coro, 1, struct coro);
1196 coro->args = newAV (); 1547 coro->args = newAV ();
1197 coro->save = CORO_SAVE_DEF;
1198 coro->flags = CF_NEW; 1548 coro->flags = CF_NEW;
1199 1549
1550 if (coro_first) coro_first->prev = coro;
1551 coro->next = coro_first;
1552 coro_first = coro;
1553
1200 hv = newHV (); 1554 coro->hv = hv = newHV ();
1201 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1555 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)); 1556 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1203 1557
1558 av_extend (coro->args, items - 1);
1204 for (i = 1; i < items; i++) 1559 for (i = 1; i < items; i++)
1205 av_push (coro->args, newSVsv (ST (i))); 1560 av_push (coro->args, newSVsv (ST (i)));
1206} 1561}
1207 OUTPUT: 1562 OUTPUT:
1208 RETVAL 1563 RETVAL
1209 1564
1210int 1565# these not obviously related functions are all rolled into the same xs
1211save (SV *coro, int new_save = -1) 1566# function to increase chances that they all will call transfer with the same
1212 CODE: 1567# 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 1568void
1229_set_stacklevel (...) 1569_set_stacklevel (...)
1230 ALIAS: 1570 ALIAS:
1231 Coro::State::transfer = 1 1571 Coro::State::transfer = 1
1232 Coro::schedule = 2 1572 Coro::schedule = 2
… …
1264 1604
1265 break; 1605 break;
1266 } 1606 }
1267 1607
1268 BARRIER; 1608 BARRIER;
1609 PUTBACK;
1269 TRANSFER (ta); 1610 TRANSFER (ta);
1270 1611 SPAGAIN; /* might be the sp of a different coroutine now */
1271 if (GIMME_V != G_VOID && ta.next != ta.prev) 1612 /* be extra careful not to ever do anything after TRANSFER */
1272 XSRETURN_YES;
1273} 1613}
1274 1614
1275bool 1615bool
1276_destroy (SV *coro_sv) 1616_destroy (SV *coro_sv)
1277 CODE: 1617 CODE:
… …
1307 CODE: 1647 CODE:
1308 RETVAL = cctx_idle; 1648 RETVAL = cctx_idle;
1309 OUTPUT: 1649 OUTPUT:
1310 RETVAL 1650 RETVAL
1311 1651
1652void
1653list ()
1654 PPCODE:
1655{
1656 struct coro *coro;
1657 for (coro = coro_first; coro; coro = coro->next)
1658 if (coro->hv)
1659 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1660}
1661
1662void
1663call (Coro::State coro, SV *coderef)
1664 ALIAS:
1665 eval = 1
1666 CODE:
1667{
1668 if (coro->mainstack)
1669 {
1670 struct coro temp;
1671
1672 if (!(coro->flags & CF_RUNNING))
1673 {
1674 save_perl (aTHX_ &temp);
1675 load_perl (aTHX_ coro);
1676 }
1677
1678 {
1679 dSP;
1680 ENTER;
1681 SAVETMPS;
1682 PUTBACK;
1683 PUSHSTACK;
1684 PUSHMARK (SP);
1685
1686 if (ix)
1687 eval_sv (coderef, 0);
1688 else
1689 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1690
1691 POPSTACK;
1692 SPAGAIN;
1693 FREETMPS;
1694 LEAVE;
1695 PUTBACK;
1696 }
1697
1698 if (!(coro->flags & CF_RUNNING))
1699 {
1700 save_perl (aTHX_ coro);
1701 load_perl (aTHX_ &temp);
1702 }
1703 }
1704}
1705
1706SV *
1707is_ready (Coro::State coro)
1708 PROTOTYPE: $
1709 ALIAS:
1710 is_ready = CF_READY
1711 is_running = CF_RUNNING
1712 is_new = CF_NEW
1713 is_destroyed = CF_DESTROYED
1714 CODE:
1715 RETVAL = boolSV (coro->flags & ix);
1716 OUTPUT:
1717 RETVAL
1718
1719void
1720api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1721
1722SV *
1723has_stack (Coro::State coro)
1724 PROTOTYPE: $
1725 CODE:
1726 RETVAL = boolSV (!!coro->cctx);
1727 OUTPUT:
1728 RETVAL
1729
1730int
1731is_traced (Coro::State coro)
1732 PROTOTYPE: $
1733 CODE:
1734 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1735 OUTPUT:
1736 RETVAL
1737
1738IV
1739rss (Coro::State coro)
1740 PROTOTYPE: $
1741 ALIAS:
1742 usecount = 1
1743 CODE:
1744 switch (ix)
1745 {
1746 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1747 case 1: RETVAL = coro->usecount; break;
1748 }
1749 OUTPUT:
1750 RETVAL
1751
1752
1312MODULE = Coro::State PACKAGE = Coro 1753MODULE = Coro::State PACKAGE = Coro
1313 1754
1314BOOT: 1755BOOT:
1315{ 1756{
1316 int i; 1757 int i;
1317 1758
1759 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1760 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1761 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1762
1763 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1764 SvREADONLY_on (coro_current);
1765
1318 coro_stash = gv_stashpv ("Coro", TRUE); 1766 coro_stash = gv_stashpv ("Coro", TRUE);
1319 1767
1320 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1768 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1321 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1769 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1322 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1770 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1323 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1771 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1324 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1772 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1325 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1773 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1326 1774
1327 coro_current = get_sv ("Coro::current", FALSE);
1328 SvREADONLY_on (coro_current);
1329
1330 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1775 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1331 coro_ready[i] = newAV (); 1776 coro_ready[i] = newAV ();
1332 1777
1333 { 1778 {
1334 SV *sv = perl_get_sv("Coro::API", 1); 1779 SV *sv = perl_get_sv ("Coro::API", TRUE);
1780 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1335 1781
1336 coroapi.schedule = api_schedule; 1782 coroapi.schedule = api_schedule;
1337 coroapi.save = api_save;
1338 coroapi.cede = api_cede; 1783 coroapi.cede = api_cede;
1339 coroapi.cede_notself = api_cede_notself; 1784 coroapi.cede_notself = api_cede_notself;
1340 coroapi.ready = api_ready; 1785 coroapi.ready = api_ready;
1341 coroapi.is_ready = api_is_ready; 1786 coroapi.is_ready = api_is_ready;
1342 coroapi.nready = &coro_nready; 1787 coroapi.nready = &coro_nready;
… …
1383 CODE: 1828 CODE:
1384 RETVAL = boolSV (api_ready (self)); 1829 RETVAL = boolSV (api_ready (self));
1385 OUTPUT: 1830 OUTPUT:
1386 RETVAL 1831 RETVAL
1387 1832
1388SV *
1389is_ready (SV *self)
1390 PROTOTYPE: $
1391 CODE:
1392 RETVAL = boolSV (api_is_ready (self));
1393 OUTPUT:
1394 RETVAL
1395
1396int 1833int
1397nready (...) 1834nready (...)
1398 PROTOTYPE: 1835 PROTOTYPE:
1399 CODE: 1836 CODE:
1400 RETVAL = coro_nready; 1837 RETVAL = coro_nready;
1401 OUTPUT: 1838 OUTPUT:
1402 RETVAL 1839 RETVAL
1403 1840
1841void
1842throw (Coro::State self, SV *throw = &PL_sv_undef)
1843 PROTOTYPE: $;$
1844 CODE:
1845 SvREFCNT_dec (self->throw);
1846 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1847
1848# for async_pool speedup
1849void
1850_pool_1 (SV *cb)
1851 CODE:
1852{
1853 struct coro *coro = SvSTATE (coro_current);
1854 HV *hv = (HV *)SvRV (coro_current);
1855 AV *defav = GvAV (PL_defgv);
1856 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1857 AV *invoke_av;
1858 int i, len;
1859
1860 if (!invoke)
1861 croak ("\3async_pool terminate\2\n");
1862
1863 SvREFCNT_dec (coro->saved_deffh);
1864 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1865
1866 hv_store (hv, "desc", sizeof ("desc") - 1,
1867 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1868
1869 invoke_av = (AV *)SvRV (invoke);
1870 len = av_len (invoke_av);
1871
1872 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1873
1874 if (len > 0)
1875 {
1876 av_fill (defav, len - 1);
1877 for (i = 0; i < len; ++i)
1878 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1879 }
1880
1881 SvREFCNT_dec (invoke);
1882}
1883
1884void
1885_pool_2 (SV *cb)
1886 CODE:
1887{
1888 struct coro *coro = SvSTATE (coro_current);
1889
1890 sv_setsv (cb, &PL_sv_undef);
1891
1892 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1893 coro->saved_deffh = 0;
1894
1895 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1896 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1897 croak ("\3async_pool terminate\2\n");
1898
1899 av_clear (GvAV (PL_defgv));
1900 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1901 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1902
1903 coro->prio = 0;
1904
1905 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1906 api_trace (coro_current, 0);
1907
1908 av_push (av_async_pool, newSVsv (coro_current));
1909}
1910
1911
1404MODULE = Coro::State PACKAGE = Coro::AIO 1912MODULE = Coro::State PACKAGE = Coro::AIO
1405 1913
1406SV * 1914SV *
1407_get_state () 1915_get_state ()
1408 CODE: 1916 CODE:

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