ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.151 by root, Wed Sep 19 21:39:15 2007 UTC vs.
Revision 1.217 by root, Wed Nov 14 11:32:56 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
… …
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 */
134static JMPENV *main_top_env; 148static JMPENV *main_top_env;
135static HV *coro_state_stash, *coro_stash; 149static HV *coro_state_stash, *coro_stash;
136static 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;
137 162
138static struct coro_cctx *cctx_first; 163static struct coro_cctx *cctx_first;
139static 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};
140 174
141/* this is a structure representing a c-level coroutine */ 175/* this is a structure representing a c-level coroutine */
142typedef struct coro_cctx { 176typedef struct coro_cctx {
143 struct coro_cctx *next; 177 struct coro_cctx *next;
144 178
… …
153 coro_context cctx; 187 coro_context cctx;
154 188
155#if CORO_USE_VALGRIND 189#if CORO_USE_VALGRIND
156 int valgrind_id; 190 int valgrind_id;
157#endif 191#endif
158 char inuse, mapped; 192 unsigned char flags;
159} coro_cctx; 193} coro_cctx;
160 194
161enum { 195enum {
162 CF_RUNNING = 0x0001, /* coroutine is running */ 196 CF_RUNNING = 0x0001, /* coroutine is running */
163 CF_READY = 0x0002, /* coroutine is ready */ 197 CF_READY = 0x0002, /* coroutine is ready */
164 CF_NEW = 0x0004, /* has never been switched to */ 198 CF_NEW = 0x0004, /* has never been switched to */
165 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 199 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166}; 200};
167 201
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
168/* this is a structure representing a perl-level coroutine */ 215/* this is a structure representing a perl-level coroutine */
169struct coro { 216struct coro {
170 /* the c coroutine allocated to this perl coroutine, if any */ 217 /* the c coroutine allocated to this perl coroutine, if any */
171 coro_cctx *cctx; 218 coro_cctx *cctx;
172 219
220 /* process data */
221 AV *mainstack;
222 perl_slots *slot; /* basically the saved sp */
223
173 /* data associated with this coroutine (initial args) */ 224 AV *args; /* data associated with this coroutine (initial args) */
174 AV *args; 225 int refcnt; /* coroutines are refcounted, yes */
175 int refcnt;
176 int save; /* CORO_SAVE flags */
177 int flags; /* CF_ flags */ 226 int flags; /* CF_ flags */
227 HV *hv; /* the perl hash associated with this coro, if any */
178 228
179 /* optionally saved, might be zero */ 229 /* statistics */
180 AV *defav; /* @_ */ 230 int usecount; /* number of transfers to this coro */
181 SV *defsv; /* $_ */
182 SV *errsv; /* $@ */
183 GV *deffh; /* default filehandle */
184 SV *irssv; /* $/ */
185 SV *irssv_sv; /* real $/ cache */
186
187#define VAR(name,type) type name;
188# include "state.h"
189#undef VAR
190 231
191 /* coro process data */ 232 /* coro process data */
192 int prio; 233 int prio;
234 SV *throw; /* exception to be thrown */
235
236 /* async_pool */
237 SV *saved_deffh;
193 238
194 /* linked list */ 239 /* linked list */
195 struct coro *next, *prev; 240 struct coro *next, *prev;
196 HV *hv; /* the perl hash associated with this coro, if any */
197}; 241};
198 242
199typedef struct coro *Coro__State; 243typedef struct coro *Coro__State;
200typedef struct coro *Coro__State_or_hashref; 244typedef struct coro *Coro__State_or_hashref;
201 245
… …
210 254
211/* for Coro.pm */ 255/* for Coro.pm */
212static SV *coro_current; 256static SV *coro_current;
213static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 257static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
214static int coro_nready; 258static int coro_nready;
215static struct coro *first; 259static struct coro *coro_first;
216 260
217/** 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}
218 292
219static AV * 293static AV *
220coro_clone_padlist (pTHX_ CV *cv) 294coro_clone_padlist (pTHX_ CV *cv)
221{ 295{
222 AV *padlist = CvPADLIST (cv); 296 AV *padlist = CvPADLIST (cv);
… …
270 344
271 /* casting is fun. */ 345 /* casting is fun. */
272 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 346 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
273 free_padlist (aTHX_ padlist); 347 free_padlist (aTHX_ padlist);
274 348
275 SvREFCNT_dec (av);
276
277 return 0; 349 return 0;
278} 350}
279 351
280#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
281 354
282static 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};
283 359
284#define CORO_MAGIC(cv) \ 360#define CORO_MAGIC(sv,type) \
285 SvMAGIC (cv) \ 361 SvMAGIC (sv) \
286 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 362 ? SvMAGIC (sv)->mg_type == type \
287 ? SvMAGIC (cv) \ 363 ? SvMAGIC (sv) \
288 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 364 : mg_find (sv, type) \
289 : 0 365 : 0
290 366
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
291/* the next two functions merely cache the padlists */ 396/* the next two functions merely cache the padlists */
292static void 397static void
293get_padlist (pTHX_ CV *cv) 398get_padlist (pTHX_ CV *cv)
294{ 399{
295 MAGIC *mg = CORO_MAGIC (cv); 400 MAGIC *mg = CORO_MAGIC_cv (cv);
296 AV *av; 401 AV *av;
297 402
298 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 403 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 404 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300 else 405 else
301 { 406 {
302#if CORO_PREFER_PERL_FUNCTIONS 407#if CORO_PREFER_PERL_FUNCTIONS
303 /* this is probably cleaner, but also slower? */ 408 /* this is probably cleaner, but also slower? */
… …
312} 417}
313 418
314static void 419static void
315put_padlist (pTHX_ CV *cv) 420put_padlist (pTHX_ CV *cv)
316{ 421{
317 MAGIC *mg = CORO_MAGIC (cv); 422 MAGIC *mg = CORO_MAGIC_cv (cv);
318 AV *av; 423 AV *av;
319 424
320 if (!mg) 425 if (expect_false (!mg))
321 { 426 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
322 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324 mg->mg_virtual = &vtbl_coro;
325 mg->mg_obj = (SV *)newAV ();
326 }
327 427
328 av = (AV *)mg->mg_obj; 428 av = (AV *)mg->mg_obj;
329 429
330 if (AvFILLp (av) >= AvMAX (av)) 430 if (expect_false (AvFILLp (av) >= AvMAX (av)))
331 av_extend (av, AvMAX (av) + 1); 431 av_extend (av, AvMAX (av) + 1);
332 432
333 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 433 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334} 434}
335 435
336/** load & save, init *******************************************************/ 436/** load & save, init *******************************************************/
337 437
338#define SB do {
339#define SE } while (0)
340
341#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
342
343static void 438static void
344load_perl (pTHX_ Coro__State c) 439load_perl (pTHX_ Coro__State c)
345{ 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
346#define VAR(name,type) PL_ ## name = c->name; 451 #define VAR(name,type) PL_ ## name = slot->name;
347# include "state.h" 452 # include "state.h"
348#undef VAR 453 #undef VAR
349
350 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
351 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
352 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
353 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
354
355 if (c->irssv)
356 {
357 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
358 {
359 SvREFCNT_dec (c->irssv);
360 c->irssv = 0;
361 }
362 else
363 {
364 REPLACE_SV (PL_rs, c->irssv);
365 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
366 sv_setsv (c->irssv_sv, PL_rs);
367 }
368 }
369 454
370 { 455 {
371 dSP; 456 dSP;
457
372 CV *cv; 458 CV *cv;
373 459
374 /* now do the ugly restore mess */ 460 /* now do the ugly restore mess */
375 while ((cv = (CV *)POPs)) 461 while (expect_true (cv = (CV *)POPs))
376 { 462 {
377 put_padlist (aTHX_ cv); /* mark this padlist as available */ 463 put_padlist (aTHX_ cv); /* mark this padlist as available */
378 CvDEPTH (cv) = PTR2IV (POPs); 464 CvDEPTH (cv) = PTR2IV (POPs);
379 CvPADLIST (cv) = (AV *)POPs; 465 CvPADLIST (cv) = (AV *)POPs;
380 } 466 }
… …
395 /* 481 /*
396 * 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
397 * (and reinitialize) all cv's in the whole callchain :( 483 * (and reinitialize) all cv's in the whole callchain :(
398 */ 484 */
399 485
400 EXTEND (SP, 3 + 1);
401 PUSHs (Nullsv); 486 XPUSHs (Nullsv);
402 /* this loop was inspired by pp_caller */ 487 /* this loop was inspired by pp_caller */
403 for (;;) 488 for (;;)
404 { 489 {
405 while (cxix >= 0) 490 while (expect_true (cxix >= 0))
406 { 491 {
407 PERL_CONTEXT *cx = &ccstk[cxix--]; 492 PERL_CONTEXT *cx = &ccstk[cxix--];
408 493
409 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 494 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
410 { 495 {
411 CV *cv = cx->blk_sub.cv; 496 CV *cv = cx->blk_sub.cv;
412 497
413 if (CvDEPTH (cv)) 498 if (expect_true (CvDEPTH (cv)))
414 { 499 {
415 EXTEND (SP, 3); 500 EXTEND (SP, 3);
416 PUSHs ((SV *)CvPADLIST (cv)); 501 PUSHs ((SV *)CvPADLIST (cv));
417 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 502 PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
418 PUSHs ((SV *)cv); 503 PUSHs ((SV *)cv);
… …
421 get_padlist (aTHX_ cv); 506 get_padlist (aTHX_ cv);
422 } 507 }
423 } 508 }
424 } 509 }
425 510
426 if (top_si->si_type == PERLSI_MAIN) 511 if (expect_true (top_si->si_type == PERLSI_MAIN))
427 break; 512 break;
428 513
429 top_si = top_si->si_prev; 514 top_si = top_si->si_prev;
430 ccstk = top_si->si_cxstack; 515 ccstk = top_si->si_cxstack;
431 cxix = top_si->si_cxix; 516 cxix = top_si->si_cxix;
432 } 517 }
433 518
434 PUTBACK; 519 PUTBACK;
435 } 520 }
436 521
437 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 */
438 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 523 /* we manually unroll here, as usually 2 slots is enough */
439 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 524 if (SLOT_COUNT >= 1) CXINC;
440 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 525 if (SLOT_COUNT >= 2) CXINC;
441 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 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 */
442 533
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
443#define VAR(name,type)c->name = PL_ ## name; 544 #define VAR(name,type) slot->name = PL_ ## name;
444# include "state.h" 545 # include "state.h"
445#undef VAR 546 #undef VAR
547 }
446} 548}
447 549
448/* 550/*
449 * allocate various perl stacks. This is an exact copy 551 * allocate various perl stacks. This is an exact copy
450 * of perl.c:init_stacks, except that it uses less memory 552 * of perl.c:init_stacks, except that it uses less memory
… …
455# define coro_init_stacks init_stacks 557# define coro_init_stacks init_stacks
456#else 558#else
457static void 559static void
458coro_init_stacks (pTHX) 560coro_init_stacks (pTHX)
459{ 561{
460 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 562 PL_curstackinfo = new_stackinfo(32, 8);
461 PL_curstackinfo->si_type = PERLSI_MAIN; 563 PL_curstackinfo->si_type = PERLSI_MAIN;
462 PL_curstack = PL_curstackinfo->si_stack; 564 PL_curstack = PL_curstackinfo->si_stack;
463 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 565 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
464 566
465 PL_stack_base = AvARRAY(PL_curstack); 567 PL_stack_base = AvARRAY(PL_curstack);
466 PL_stack_sp = PL_stack_base; 568 PL_stack_sp = PL_stack_base;
467 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 569 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
468 570
469 New(50,PL_tmps_stack,128,SV*); 571 New(50,PL_tmps_stack,32,SV*);
470 PL_tmps_floor = -1; 572 PL_tmps_floor = -1;
471 PL_tmps_ix = -1; 573 PL_tmps_ix = -1;
472 PL_tmps_max = 128; 574 PL_tmps_max = 32;
473 575
474 New(54,PL_markstack,32,I32); 576 New(54,PL_markstack,16,I32);
475 PL_markstack_ptr = PL_markstack; 577 PL_markstack_ptr = PL_markstack;
476 PL_markstack_max = PL_markstack + 32; 578 PL_markstack_max = PL_markstack + 16;
477 579
478#ifdef SET_MARK_OFFSET 580#ifdef SET_MARK_OFFSET
479 SET_MARK_OFFSET; 581 SET_MARK_OFFSET;
480#endif 582#endif
481 583
482 New(54,PL_scopestack,32,I32); 584 New(54,PL_scopestack,8,I32);
483 PL_scopestack_ix = 0; 585 PL_scopestack_ix = 0;
484 PL_scopestack_max = 32; 586 PL_scopestack_max = 8;
485 587
486 New(54,PL_savestack,64,ANY); 588 New(54,PL_savestack,24,ANY);
487 PL_savestack_ix = 0; 589 PL_savestack_ix = 0;
488 PL_savestack_max = 64; 590 PL_savestack_max = 24;
489 591
490#if !PERL_VERSION_ATLEAST (5,9,0) 592#if !PERL_VERSION_ATLEAST (5,9,0)
491 New(54,PL_retstack,16,OP*); 593 New(54,PL_retstack,4,OP*);
492 PL_retstack_ix = 0; 594 PL_retstack_ix = 0;
493 PL_retstack_max = 16; 595 PL_retstack_max = 4;
494#endif 596#endif
495} 597}
496#endif 598#endif
497 599
498/* 600/*
499 * destroy the stacks, the callchain etc... 601 * destroy the stacks, the callchain etc...
500 */ 602 */
501static void 603static void
502coro_destroy_stacks (pTHX) 604coro_destroy_stacks (pTHX)
503{ 605{
504 if (!IN_DESTRUCT)
505 {
506 /* restore all saved variables and stuff */
507 LEAVE_SCOPE (0);
508 assert (PL_tmps_floor == -1);
509
510 /* free all temporaries */
511 FREETMPS;
512 assert (PL_tmps_ix == -1);
513
514 /* unwind all extra stacks */
515 POPSTACK_TO (PL_mainstack);
516
517 /* unwind main stack */
518 dounwind (-1);
519 }
520
521 while (PL_curstackinfo->si_next) 606 while (PL_curstackinfo->si_next)
522 PL_curstackinfo = PL_curstackinfo->si_next; 607 PL_curstackinfo = PL_curstackinfo->si_next;
523 608
524 while (PL_curstackinfo) 609 while (PL_curstackinfo)
525 { 610 {
… …
540#if !PERL_VERSION_ATLEAST (5,9,0) 625#if !PERL_VERSION_ATLEAST (5,9,0)
541 Safefree (PL_retstack); 626 Safefree (PL_retstack);
542#endif 627#endif
543} 628}
544 629
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
545/** coroutine stack handling ************************************************/ 667/** coroutine stack handling ************************************************/
546 668
669#if 0
670static int (*orig_sigelem_get) (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 */
547static void 681static int
682coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
683{
684 return orig_sigelem_get (aTHX_ sv, mg);
685 const char *s = MgPV_nolen_const (mg);
686
687 if (*s == '_')
688 {
689 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
690 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
691 }
692
693 return orig_sigelem_get (aTHX_ sv, mg);
694}
695#endif
696
697static void
548setup_coro (pTHX_ struct coro *coro) 698coro_setup (pTHX_ struct coro *coro)
549{ 699{
550 /* 700 /*
551 * emulate part of the perl startup here. 701 * emulate part of the perl startup here.
552 */ 702 */
553 coro_init_stacks (aTHX); 703 coro_init_stacks (aTHX);
554 704
705 PL_runops = RUNOPS_DEFAULT;
555 PL_curcop = &PL_compiling; 706 PL_curcop = &PL_compiling;
556 PL_in_eval = EVAL_NULL; 707 PL_in_eval = EVAL_NULL;
557 PL_comppad = 0; 708 PL_comppad = 0;
558 PL_curpm = 0; 709 PL_curpm = 0;
710 PL_curpad = 0;
559 PL_localizing = 0; 711 PL_localizing = 0;
560 PL_dirty = 0; 712 PL_dirty = 0;
561 PL_restartop = 0; 713 PL_restartop = 0;
562 714
715 /* recreate the die/warn hooks */
716 PL_diehook = 0;
717 hv_store (hv_sig, "__DIE__", sizeof ("__DIE__") - 1, newSV (0), 0);
718 PL_diehook = SvREFCNT_inc (rv_diehook);
719
720 PL_warnhook = 0;
721 hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, newSV (0), 0);
722 PL_warnhook = SvREFCNT_inc (rv_warnhook);
723
724 GvSV (PL_defgv) = newSV (0);
725 GvAV (PL_defgv) = coro->args; coro->args = 0;
726 GvSV (PL_errgv) = newSV (0);
727 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
728 PL_rs = newSVsv (GvSV (irsgv));
729 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
730
563 { 731 {
564 dSP; 732 dSP;
565 LOGOP myop; 733 LOGOP myop;
566 734
567 SvREFCNT_dec (GvAV (PL_defgv));
568 GvAV (PL_defgv) = coro->args; coro->args = 0;
569
570 Zero (&myop, 1, LOGOP); 735 Zero (&myop, 1, LOGOP);
571 myop.op_next = Nullop; 736 myop.op_next = Nullop;
572 myop.op_flags = OPf_WANT_VOID; 737 myop.op_flags = OPf_WANT_VOID;
573 738
574 PUSHMARK (SP); 739 PUSHMARK (SP);
575 XPUSHs (av_shift (GvAV (PL_defgv))); 740 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
576 PUTBACK; 741 PUTBACK;
577 PL_op = (OP *)&myop; 742 PL_op = (OP *)&myop;
578 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 743 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
579 SPAGAIN; 744 SPAGAIN;
580 } 745 }
581 746
582 ENTER; /* necessary e.g. for dounwind */ 747 /* this newly created coroutine might be run on an existing cctx which most
748 * likely was suspended in set_stacklevel, called from entersub.
749 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
750 * so we ENTER here for symmetry
751 */
752 ENTER;
753}
754
755static void
756coro_destroy (pTHX_ struct coro *coro)
757{
758 if (!IN_DESTRUCT)
759 {
760 /* restore all saved variables and stuff */
761 LEAVE_SCOPE (0);
762 assert (PL_tmps_floor == -1);
763
764 /* free all temporaries */
765 FREETMPS;
766 assert (PL_tmps_ix == -1);
767
768 /* unwind all extra stacks */
769 POPSTACK_TO (PL_mainstack);
770
771 /* unwind main stack */
772 dounwind (-1);
773 }
774
775 SvREFCNT_dec (GvSV (PL_defgv));
776 SvREFCNT_dec (GvAV (PL_defgv));
777 SvREFCNT_dec (GvSV (PL_errgv));
778 SvREFCNT_dec (PL_defoutgv);
779 SvREFCNT_dec (PL_rs);
780 SvREFCNT_dec (GvSV (irsgv));
781
782 SvREFCNT_dec (PL_diehook);
783 SvREFCNT_dec (PL_warnhook);
784
785 SvREFCNT_dec (coro->saved_deffh);
786 SvREFCNT_dec (coro->throw);
787
788 coro_destroy_stacks (aTHX);
583} 789}
584 790
585static void 791static void
586free_coro_mortal (pTHX) 792free_coro_mortal (pTHX)
587{ 793{
588 if (coro_mortal) 794 if (expect_true (coro_mortal))
589 { 795 {
590 SvREFCNT_dec (coro_mortal); 796 SvREFCNT_dec (coro_mortal);
591 coro_mortal = 0; 797 coro_mortal = 0;
592 } 798 }
799}
800
801static int
802runops_trace (pTHX)
803{
804 COP *oldcop = 0;
805 int oldcxix = -2;
806 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
807 coro_cctx *cctx = coro->cctx;
808
809 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
810 {
811 PERL_ASYNC_CHECK ();
812
813 if (cctx->flags & CC_TRACE_ALL)
814 {
815 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
816 {
817 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
818 SV **bot, **top;
819 AV *av = newAV (); /* return values */
820 SV **cb;
821 dSP;
822
823 GV *gv = CvGV (cx->blk_sub.cv);
824 SV *fullname = sv_2mortal (newSV (0));
825 if (isGV (gv))
826 gv_efullname3 (fullname, gv, 0);
827
828 bot = PL_stack_base + cx->blk_oldsp + 1;
829 top = cx->blk_gimme == G_ARRAY ? SP + 1
830 : cx->blk_gimme == G_SCALAR ? bot + 1
831 : bot;
832
833 av_extend (av, top - bot);
834 while (bot < top)
835 av_push (av, SvREFCNT_inc (*bot++));
836
837 PL_runops = RUNOPS_DEFAULT;
838 ENTER;
839 SAVETMPS;
840 EXTEND (SP, 3);
841 PUSHMARK (SP);
842 PUSHs (&PL_sv_no);
843 PUSHs (fullname);
844 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
845 PUTBACK;
846 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
847 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
848 SPAGAIN;
849 FREETMPS;
850 LEAVE;
851 PL_runops = runops_trace;
852 }
853
854 if (oldcop != PL_curcop)
855 {
856 oldcop = PL_curcop;
857
858 if (PL_curcop != &PL_compiling)
859 {
860 SV **cb;
861
862 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
863 {
864 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
865
866 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
867 {
868 runops_proc_t old_runops = PL_runops;
869 dSP;
870 GV *gv = CvGV (cx->blk_sub.cv);
871 SV *fullname = sv_2mortal (newSV (0));
872
873 if (isGV (gv))
874 gv_efullname3 (fullname, gv, 0);
875
876 PL_runops = RUNOPS_DEFAULT;
877 ENTER;
878 SAVETMPS;
879 EXTEND (SP, 3);
880 PUSHMARK (SP);
881 PUSHs (&PL_sv_yes);
882 PUSHs (fullname);
883 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
884 PUTBACK;
885 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
886 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
887 SPAGAIN;
888 FREETMPS;
889 LEAVE;
890 PL_runops = runops_trace;
891 }
892
893 oldcxix = cxstack_ix;
894 }
895
896 if (cctx->flags & CC_TRACE_LINE)
897 {
898 dSP;
899
900 PL_runops = RUNOPS_DEFAULT;
901 ENTER;
902 SAVETMPS;
903 EXTEND (SP, 3);
904 PL_runops = RUNOPS_DEFAULT;
905 PUSHMARK (SP);
906 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
907 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
908 PUTBACK;
909 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
910 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
911 SPAGAIN;
912 FREETMPS;
913 LEAVE;
914 PL_runops = runops_trace;
915 }
916 }
917 }
918 }
919 }
920
921 TAINT_NOT;
922 return 0;
593} 923}
594 924
595/* inject a fake call to Coro::State::_cctx_init into the execution */ 925/* inject a fake call to Coro::State::_cctx_init into the execution */
596/* _cctx_init should be careful, as it could be called at almost any time */ 926/* _cctx_init should be careful, as it could be called at almost any time */
597/* during execution of a perl program */ 927/* during execution of a perl program */
598static void NOINLINE 928static void NOINLINE
599prepare_cctx (pTHX_ coro_cctx *cctx) 929cctx_prepare (pTHX_ coro_cctx *cctx)
600{ 930{
601 dSP; 931 dSP;
602 LOGOP myop; 932 LOGOP myop;
933
934 PL_top_env = &PL_start_env;
935
936 if (cctx->flags & CC_TRACE)
937 PL_runops = runops_trace;
603 938
604 Zero (&myop, 1, LOGOP); 939 Zero (&myop, 1, LOGOP);
605 myop.op_next = PL_op; 940 myop.op_next = PL_op;
606 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 941 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
607 942
… …
617 952
618/* 953/*
619 * this is a _very_ stripped down perl interpreter ;) 954 * this is a _very_ stripped down perl interpreter ;)
620 */ 955 */
621static void 956static void
622coro_run (void *arg) 957cctx_run (void *arg)
623{ 958{
624 dTHX; 959 dTHX;
625 960
626 /* coro_run is the alternative tail of transfer(), so unlock here. */ 961 /* cctx_run is the alternative tail of transfer(), so unlock here. */
627 UNLOCK; 962 UNLOCK;
628 963
629 PL_top_env = &PL_start_env; 964 /* we now skip the entersub that lead to transfer() */
965 PL_op = PL_op->op_next;
630 966
631 /* inject a fake subroutine call to cctx_init */ 967 /* inject a fake subroutine call to cctx_init */
632 prepare_cctx (aTHX_ (coro_cctx *)arg); 968 cctx_prepare (aTHX_ (coro_cctx *)arg);
633 969
634 /* somebody or something will hit me for both perl_run and PL_restartop */ 970 /* somebody or something will hit me for both perl_run and PL_restartop */
635 PL_restartop = PL_op; 971 PL_restartop = PL_op;
636 perl_run (PL_curinterp); 972 perl_run (PL_curinterp);
637 973
… …
656 ++cctx_count; 992 ++cctx_count;
657 993
658 Newz (0, cctx, 1, coro_cctx); 994 Newz (0, cctx, 1, coro_cctx);
659 995
660#if HAVE_MMAP 996#if HAVE_MMAP
661
662 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 997 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
663 /* mmap supposedly does allocate-on-write for us */ 998 /* mmap supposedly does allocate-on-write for us */
664 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 999 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
665 1000
666 if (cctx->sptr != (void *)-1) 1001 if (cctx->sptr != (void *)-1)
… …
668# if CORO_STACKGUARD 1003# if CORO_STACKGUARD
669 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1004 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
670# endif 1005# endif
671 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1006 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
672 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1007 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
673 cctx->mapped = 1; 1008 cctx->flags |= CC_MAPPED;
674 } 1009 }
675 else 1010 else
676#endif 1011#endif
677 { 1012 {
678 cctx->ssize = coro_stacksize * (long)sizeof (long); 1013 cctx->ssize = coro_stacksize * (long)sizeof (long);
… …
687 stack_start = cctx->sptr; 1022 stack_start = cctx->sptr;
688 stack_size = cctx->ssize; 1023 stack_size = cctx->ssize;
689 } 1024 }
690 1025
691 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1026 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
692 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1027 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
693 1028
694 return cctx; 1029 return cctx;
695} 1030}
696 1031
697static void 1032static void
… …
705#if CORO_USE_VALGRIND 1040#if CORO_USE_VALGRIND
706 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1041 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
707#endif 1042#endif
708 1043
709#if HAVE_MMAP 1044#if HAVE_MMAP
710 if (cctx->mapped) 1045 if (cctx->flags & CC_MAPPED)
711 munmap (cctx->sptr, cctx->ssize); 1046 munmap (cctx->sptr, cctx->ssize);
712 else 1047 else
713#endif 1048#endif
714 Safefree (cctx->sptr); 1049 Safefree (cctx->sptr);
715 1050
716 Safefree (cctx); 1051 Safefree (cctx);
717} 1052}
718 1053
1054/* wether this cctx should be destructed */
1055#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1056
719static coro_cctx * 1057static coro_cctx *
720cctx_get (pTHX) 1058cctx_get (pTHX)
721{ 1059{
722 while (cctx_first) 1060 while (expect_true (cctx_first))
723 { 1061 {
724 coro_cctx *cctx = cctx_first; 1062 coro_cctx *cctx = cctx_first;
725 cctx_first = cctx->next; 1063 cctx_first = cctx->next;
726 --cctx_idle; 1064 --cctx_idle;
727 1065
728 if (cctx->ssize >= coro_stacksize) 1066 if (expect_true (!CCTX_EXPIRED (cctx)))
729 return cctx; 1067 return cctx;
730 1068
731 cctx_destroy (cctx); 1069 cctx_destroy (cctx);
732 } 1070 }
733 1071
734 PL_op = PL_op->op_next;
735 return cctx_new (); 1072 return cctx_new ();
736} 1073}
737 1074
738static void 1075static void
739cctx_put (coro_cctx *cctx) 1076cctx_put (coro_cctx *cctx)
740{ 1077{
741 /* free another cctx if overlimit */ 1078 /* free another cctx if overlimit */
742 if (cctx_idle >= MAX_IDLE_CCTX) 1079 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
743 { 1080 {
744 coro_cctx *first = cctx_first; 1081 coro_cctx *first = cctx_first;
745 cctx_first = first->next; 1082 cctx_first = first->next;
746 --cctx_idle; 1083 --cctx_idle;
747 1084
748 assert (!first->inuse);
749 cctx_destroy (first); 1085 cctx_destroy (first);
750 } 1086 }
751 1087
752 ++cctx_idle; 1088 ++cctx_idle;
753 cctx->next = cctx_first; 1089 cctx->next = cctx_first;
754 cctx_first = cctx; 1090 cctx_first = cctx;
755} 1091}
756 1092
757/** coroutine switching *****************************************************/ 1093/** coroutine switching *****************************************************/
758 1094
759/* never call directly, always through the coro_state_transfer global variable */ 1095static void
1096transfer_check (pTHX_ struct coro *prev, struct coro *next)
1097{
1098 if (expect_true (prev != next))
1099 {
1100 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1101 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1102
1103 if (expect_false (next->flags & CF_RUNNING))
1104 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1105
1106 if (expect_false (next->flags & CF_DESTROYED))
1107 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1108
1109 if (
1110#if PERL_VERSION_ATLEAST (5,9,0)
1111 expect_false (PL_parser)
1112#else
1113 expect_false (PL_lex_state != LEX_NOTPARSING)
1114#endif
1115 )
1116 croak ("Coro::State::transfer called while parsing, but this is not supported");
1117 }
1118}
1119
1120/* always use the TRANSFER macro */
760static void NOINLINE 1121static void NOINLINE
761transfer (pTHX_ struct coro *prev, struct coro *next) 1122transfer (pTHX_ struct coro *prev, struct coro *next)
762{ 1123{
763 dSTACKLEVEL; 1124 dSTACKLEVEL;
1125 static volatile int has_throw;
764 1126
765 /* sometimes transfer is only called to set idle_sp */ 1127 /* sometimes transfer is only called to set idle_sp */
766 if (!next) 1128 if (expect_false (!next))
767 { 1129 {
768 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1130 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
769 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1131 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
770 } 1132 }
771 else if (prev != next) 1133 else if (expect_true (prev != next))
772 { 1134 {
773 coro_cctx *prev__cctx; 1135 coro_cctx *prev__cctx;
774 1136
775 if (prev->flags & CF_NEW) 1137 if (expect_false (prev->flags & CF_NEW))
776 { 1138 {
777 /* create a new empty context */ 1139 /* create a new empty context */
778 Newz (0, prev->cctx, 1, coro_cctx); 1140 Newz (0, prev->cctx, 1, coro_cctx);
779 prev->cctx->inuse = 1;
780 prev->flags &= ~CF_NEW; 1141 prev->flags &= ~CF_NEW;
781 prev->flags |= CF_RUNNING; 1142 prev->flags |= CF_RUNNING;
782 } 1143 }
783 1144
784 /*TODO: must not croak here */
785 if (!prev->flags & CF_RUNNING)
786 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
787
788 if (next->flags & CF_RUNNING)
789 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
790
791 if (next->flags & CF_DESTROYED)
792 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
793
794 prev->flags &= ~CF_RUNNING; 1145 prev->flags &= ~CF_RUNNING;
795 next->flags |= CF_RUNNING; 1146 next->flags |= CF_RUNNING;
796 1147
797 LOCK; 1148 LOCK;
798 1149
1150 /* first get rid of the old state */
1151 save_perl (aTHX_ prev);
1152
799 if (next->flags & CF_NEW) 1153 if (expect_false (next->flags & CF_NEW))
800 { 1154 {
801 /* need to start coroutine */ 1155 /* need to start coroutine */
802 next->flags &= ~CF_NEW; 1156 next->flags &= ~CF_NEW;
803 /* first get rid of the old state */
804 save_perl (aTHX_ prev);
805 /* setup coroutine call */ 1157 /* setup coroutine call */
806 setup_coro (aTHX_ next); 1158 coro_setup (aTHX_ next);
807 /* need a new stack */
808 assert (!next->cctx);
809 } 1159 }
810 else 1160 else
811 {
812 /* coroutine already started */
813 save_perl (aTHX_ prev);
814 load_perl (aTHX_ next); 1161 load_perl (aTHX_ next);
815 }
816 1162
817 prev__cctx = prev->cctx; 1163 prev__cctx = prev->cctx;
818 1164
819 /* possibly "free" the cctx */ 1165 /* possibly "free" the cctx */
820 if (prev__cctx->idle_sp == STACKLEVEL) 1166 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
821 { 1167 {
822 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1168 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
823 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1169 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
824 1170
825 prev->cctx = 0; 1171 prev->cctx = 0;
826 1172
1173 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1174 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1175 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1176 if (!next->cctx)
1177 next->cctx = cctx_get (aTHX);
1178
827 cctx_put (prev__cctx); 1179 cctx_put (prev__cctx);
828 prev__cctx->inuse = 0;
829 } 1180 }
830 1181
1182 ++next->usecount;
1183
831 if (!next->cctx) 1184 if (expect_true (!next->cctx))
832 {
833 next->cctx = cctx_get (aTHX); 1185 next->cctx = cctx_get (aTHX);
834 assert (!next->cctx->inuse);
835 next->cctx->inuse = 1;
836 }
837 1186
1187 has_throw = !!next->throw;
1188
838 if (prev__cctx != next->cctx) 1189 if (expect_false (prev__cctx != next->cctx))
839 { 1190 {
840 prev__cctx->top_env = PL_top_env; 1191 prev__cctx->top_env = PL_top_env;
841 PL_top_env = next->cctx->top_env; 1192 PL_top_env = next->cctx->top_env;
842 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1193 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
843 } 1194 }
844 1195
845 free_coro_mortal (aTHX); 1196 free_coro_mortal (aTHX);
846 UNLOCK; 1197 UNLOCK;
1198
1199 if (expect_false (has_throw))
1200 {
1201 struct coro *coro = SvSTATE (coro_current);
1202
1203 if (coro->throw)
1204 {
1205 SV *exception = coro->throw;
1206 coro->throw = 0;
1207 sv_setsv (ERRSV, exception);
1208 croak (0);
1209 }
1210 }
847 } 1211 }
848} 1212}
849 1213
850struct transfer_args 1214struct transfer_args
851{ 1215{
852 struct coro *prev, *next; 1216 struct coro *prev, *next;
853}; 1217};
854 1218
855#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1219#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
1220#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
856 1221
857/** high level stuff ********************************************************/ 1222/** high level stuff ********************************************************/
858 1223
859static int 1224static int
860coro_state_destroy (pTHX_ struct coro *coro) 1225coro_state_destroy (pTHX_ struct coro *coro)
… …
877 1242
878 if (coro->mainstack && coro->mainstack != main_mainstack) 1243 if (coro->mainstack && coro->mainstack != main_mainstack)
879 { 1244 {
880 struct coro temp; 1245 struct coro temp;
881 1246
882 assert (!(coro->flags & CF_RUNNING));
883
884 Zero (&temp, 1, struct coro);
885 temp.save = CORO_SAVE_ALL;
886
887 if (coro->flags & CF_RUNNING) 1247 if (coro->flags & CF_RUNNING)
888 croak ("FATAL: tried to destroy currently running coroutine"); 1248 croak ("FATAL: tried to destroy currently running coroutine");
889 1249
890 save_perl (aTHX_ &temp); 1250 save_perl (aTHX_ &temp);
891 load_perl (aTHX_ coro); 1251 load_perl (aTHX_ coro);
892 1252
893 coro_destroy_stacks (aTHX); 1253 coro_destroy (aTHX_ coro);
894 1254
895 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1255 load_perl (aTHX_ &temp);
896 1256
897 coro->mainstack = 0; 1257 coro->slot = 0;
898 } 1258 }
899 1259
900 cctx_destroy (coro->cctx); 1260 cctx_destroy (coro->cctx);
901 SvREFCNT_dec (coro->args); 1261 SvREFCNT_dec (coro->args);
902 1262
903 if (coro->next) coro->next->prev = coro->prev; 1263 if (coro->next) coro->next->prev = coro->prev;
904 if (coro->prev) coro->prev->next = coro->next; 1264 if (coro->prev) coro->prev->next = coro->next;
905 if (coro == first) first = coro->next; 1265 if (coro == coro_first) coro_first = coro->next;
906 1266
907 return 1; 1267 return 1;
908} 1268}
909 1269
910static int 1270static int
… …
943#else 1303#else
944# define MGf_DUP 0 1304# define MGf_DUP 0
945#endif 1305#endif
946}; 1306};
947 1307
948static struct coro *
949SvSTATE_ (pTHX_ SV *coro)
950{
951 HV *stash;
952 MAGIC *mg;
953
954 if (SvROK (coro))
955 coro = SvRV (coro);
956
957 stash = SvSTASH (coro);
958 if (stash != coro_stash && stash != coro_state_stash)
959 {
960 /* very slow, but rare, check */
961 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
962 croak ("Coro::State object required");
963 }
964
965 mg = CORO_MAGIC (coro);
966 return (struct coro *)mg->mg_ptr;
967}
968
969#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
970
971static void 1308static void
972prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1309prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
973{ 1310{
974 ta->prev = SvSTATE (prev_sv); 1311 ta->prev = SvSTATE (prev_sv);
975 ta->next = SvSTATE (next_sv); 1312 ta->next = SvSTATE (next_sv);
1313 TRANSFER_CHECK (*ta);
976} 1314}
977 1315
978static void 1316static void
979api_transfer (SV *prev_sv, SV *next_sv) 1317api_transfer (SV *prev_sv, SV *next_sv)
980{ 1318{
981 dTHX; 1319 dTHX;
982 struct transfer_args ta; 1320 struct transfer_args ta;
983 1321
984 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1322 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
985 TRANSFER (ta); 1323 TRANSFER (ta);
986}
987
988static int
989api_save (SV *coro_sv, int new_save)
990{
991 dTHX;
992 struct coro *coro = SvSTATE (coro_sv);
993 int old_save = coro->save;
994
995 if (new_save >= 0)
996 coro->save = new_save;
997
998 return old_save;
999} 1324}
1000 1325
1001/** Coro ********************************************************************/ 1326/** Coro ********************************************************************/
1002 1327
1003static void 1328static void
… …
1062 { 1387 {
1063 LOCK; 1388 LOCK;
1064 next_sv = coro_deq (aTHX_ PRIO_MIN); 1389 next_sv = coro_deq (aTHX_ PRIO_MIN);
1065 1390
1066 /* nothing to schedule: call the idle handler */ 1391 /* nothing to schedule: call the idle handler */
1067 if (!next_sv) 1392 if (expect_false (!next_sv))
1068 { 1393 {
1069 dSP; 1394 dSP;
1070 UNLOCK; 1395 UNLOCK;
1071 1396
1072 ENTER; 1397 ENTER;
… …
1082 } 1407 }
1083 1408
1084 ta->next = SvSTATE (next_sv); 1409 ta->next = SvSTATE (next_sv);
1085 1410
1086 /* cannot transfer to destroyed coros, skip and look for next */ 1411 /* cannot transfer to destroyed coros, skip and look for next */
1087 if (ta->next->flags & CF_DESTROYED) 1412 if (expect_false (ta->next->flags & CF_DESTROYED))
1088 { 1413 {
1089 UNLOCK; 1414 UNLOCK;
1090 SvREFCNT_dec (next_sv); 1415 SvREFCNT_dec (next_sv);
1091 /* coro_nready is already taken care of by destroy */ 1416 /* coro_nready is already taken care of by destroy */
1092 continue; 1417 continue;
… …
1097 break; 1422 break;
1098 } 1423 }
1099 1424
1100 /* free this only after the transfer */ 1425 /* free this only after the transfer */
1101 prev_sv = SvRV (coro_current); 1426 prev_sv = SvRV (coro_current);
1102 SvRV_set (coro_current, next_sv);
1103 ta->prev = SvSTATE (prev_sv); 1427 ta->prev = SvSTATE (prev_sv);
1104 1428 TRANSFER_CHECK (*ta);
1105 assert (ta->next->flags & CF_READY); 1429 assert (ta->next->flags & CF_READY);
1106 ta->next->flags &= ~CF_READY; 1430 ta->next->flags &= ~CF_READY;
1431 SvRV_set (coro_current, next_sv);
1107 1432
1108 LOCK; 1433 LOCK;
1109 free_coro_mortal (aTHX); 1434 free_coro_mortal (aTHX);
1110 coro_mortal = prev_sv; 1435 coro_mortal = prev_sv;
1111 UNLOCK; 1436 UNLOCK;
… …
1148 dTHX; 1473 dTHX;
1149 struct transfer_args ta; 1474 struct transfer_args ta;
1150 1475
1151 prepare_cede (aTHX_ &ta); 1476 prepare_cede (aTHX_ &ta);
1152 1477
1153 if (ta.prev != ta.next) 1478 if (expect_true (ta.prev != ta.next))
1154 { 1479 {
1155 TRANSFER (ta); 1480 TRANSFER (ta);
1156 return 1; 1481 return 1;
1157 } 1482 }
1158 else 1483 else
… …
1172 } 1497 }
1173 else 1498 else
1174 return 0; 1499 return 0;
1175} 1500}
1176 1501
1502static void
1503api_trace (SV *coro_sv, int flags)
1504{
1505 dTHX;
1506 struct coro *coro = SvSTATE (coro_sv);
1507
1508 if (flags & CC_TRACE)
1509 {
1510 if (!coro->cctx)
1511 coro->cctx = cctx_new ();
1512 else if (!(coro->cctx->flags & CC_TRACE))
1513 croak ("cannot enable tracing on coroutine with custom stack");
1514
1515 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1516 }
1517 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1518 {
1519 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1520
1521 if (coro->flags & CF_RUNNING)
1522 PL_runops = RUNOPS_DEFAULT;
1523 else
1524 coro->slot->runops = RUNOPS_DEFAULT;
1525 }
1526}
1527
1177MODULE = Coro::State PACKAGE = Coro::State 1528MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1178 1529
1179PROTOTYPES: DISABLE 1530PROTOTYPES: DISABLE
1180 1531
1181BOOT: 1532BOOT:
1182{ 1533{
1183#ifdef USE_ITHREADS 1534#ifdef USE_ITHREADS
1184 MUTEX_INIT (&coro_mutex); 1535 MUTEX_INIT (&coro_mutex);
1185#endif 1536#endif
1186 BOOT_PAGESIZE; 1537 BOOT_PAGESIZE;
1187 1538
1539 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1540 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1541#if 0
1542 orig_sigelem_get = PL_vtbl_sigelem.svt_get;
1543 PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1544#endif
1545 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1546 rv_diehook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1547 rv_warnhook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1548
1188 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1549 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1189 1550
1190 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1551 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1191 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 1552 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1192 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1193 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1194 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1195 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); 1553 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1196 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1554 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1197 1555
1198 main_mainstack = PL_mainstack; 1556 main_mainstack = PL_mainstack;
1199 main_top_env = PL_top_env; 1557 main_top_env = PL_top_env;
1200 1558
1201 while (main_top_env->je_prev) 1559 while (main_top_env->je_prev)
1202 main_top_env = main_top_env->je_prev; 1560 main_top_env = main_top_env->je_prev;
1203 1561
1204 coroapi.ver = CORO_API_VERSION; 1562 coroapi.ver = CORO_API_VERSION;
1563 coroapi.rev = CORO_API_REVISION;
1205 coroapi.transfer = api_transfer; 1564 coroapi.transfer = api_transfer;
1206 1565
1207 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1566 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1208} 1567}
1209 1568
1210SV * 1569SV *
1211new (char *klass, ...) 1570new (char *klass, ...)
1212 CODE: 1571 CODE:
1213{ 1572{
1214 struct coro *coro; 1573 struct coro *coro;
1574 MAGIC *mg;
1215 HV *hv; 1575 HV *hv;
1216 int i; 1576 int i;
1217 1577
1218 Newz (0, coro, 1, struct coro); 1578 Newz (0, coro, 1, struct coro);
1219 coro->args = newAV (); 1579 coro->args = newAV ();
1220 coro->save = CORO_SAVE_DEF;
1221 coro->flags = CF_NEW; 1580 coro->flags = CF_NEW;
1222 1581
1223 if (first) first->prev = coro; 1582 if (coro_first) coro_first->prev = coro;
1224 coro->next = first; 1583 coro->next = coro_first;
1225 first = coro; 1584 coro_first = coro;
1226 1585
1227 coro->hv = hv = newHV (); 1586 coro->hv = hv = newHV ();
1228 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1587 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1588 mg->mg_flags |= MGf_DUP;
1229 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1589 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1230 1590
1591 av_extend (coro->args, items - 1);
1231 for (i = 1; i < items; i++) 1592 for (i = 1; i < items; i++)
1232 av_push (coro->args, newSVsv (ST (i))); 1593 av_push (coro->args, newSVsv (ST (i)));
1233} 1594}
1234 OUTPUT: 1595 OUTPUT:
1235 RETVAL 1596 RETVAL
1236 1597
1237int 1598# these not obviously related functions are all rolled into the same xs
1238save (SV *coro, int new_save = -1) 1599# function to increase chances that they all will call transfer with the same
1239 CODE: 1600# stack offset
1240 RETVAL = api_save (coro, new_save);
1241 OUTPUT:
1242 RETVAL
1243
1244int
1245save_also (SV *coro_sv, int save_also)
1246 CODE:
1247{
1248 struct coro *coro = SvSTATE (coro_sv);
1249 RETVAL = coro->save;
1250 coro->save |= save_also;
1251}
1252 OUTPUT:
1253 RETVAL
1254
1255void 1601void
1256_set_stacklevel (...) 1602_set_stacklevel (...)
1257 ALIAS: 1603 ALIAS:
1258 Coro::State::transfer = 1 1604 Coro::State::transfer = 1
1259 Coro::schedule = 2 1605 Coro::schedule = 2
… …
1291 1637
1292 break; 1638 break;
1293 } 1639 }
1294 1640
1295 BARRIER; 1641 BARRIER;
1642 PUTBACK;
1296 TRANSFER (ta); 1643 TRANSFER (ta);
1297 1644 SPAGAIN; /* might be the sp of a different coroutine now */
1298 if (GIMME_V != G_VOID && ta.next != ta.prev) 1645 /* be extra careful not to ever do anything after TRANSFER */
1299 XSRETURN_YES;
1300} 1646}
1301 1647
1302bool 1648bool
1303_destroy (SV *coro_sv) 1649_destroy (SV *coro_sv)
1304 CODE: 1650 CODE:
… …
1339void 1685void
1340list () 1686list ()
1341 PPCODE: 1687 PPCODE:
1342{ 1688{
1343 struct coro *coro; 1689 struct coro *coro;
1344 for (coro = first; coro; coro = coro->next) 1690 for (coro = coro_first; coro; coro = coro->next)
1345 if (coro->hv) 1691 if (coro->hv)
1346 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 1692 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1347} 1693}
1348 1694
1349void 1695void
1350_eval (SV *coro_sv, SV *coderef) 1696call (Coro::State coro, SV *coderef)
1697 ALIAS:
1698 eval = 1
1351 CODE: 1699 CODE:
1352{ 1700{
1353 struct coro *coro = SvSTATE (coro_sv);
1354 if (coro->mainstack) 1701 if (coro->mainstack)
1355 { 1702 {
1356 struct coro temp; 1703 struct coro temp;
1357 Zero (&temp, 1, struct coro);
1358 temp.save = CORO_SAVE_ALL;
1359 1704
1360 if (!(coro->flags & CF_RUNNING)) 1705 if (!(coro->flags & CF_RUNNING))
1361 { 1706 {
1362 save_perl (aTHX_ &temp); 1707 save_perl (aTHX_ &temp);
1363 load_perl (aTHX_ coro); 1708 load_perl (aTHX_ coro);
… …
1365 1710
1366 { 1711 {
1367 dSP; 1712 dSP;
1368 ENTER; 1713 ENTER;
1369 SAVETMPS; 1714 SAVETMPS;
1715 PUTBACK;
1716 PUSHSTACK;
1370 PUSHMARK (SP); 1717 PUSHMARK (SP);
1371 PUTBACK; 1718
1719 if (ix)
1720 eval_sv (coderef, 0);
1721 else
1372 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1722 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1723
1724 POPSTACK;
1373 SPAGAIN; 1725 SPAGAIN;
1374 FREETMPS; 1726 FREETMPS;
1375 LEAVE; 1727 LEAVE;
1376 PUTBACK; 1728 PUTBACK;
1377 } 1729 }
… …
1381 save_perl (aTHX_ coro); 1733 save_perl (aTHX_ coro);
1382 load_perl (aTHX_ &temp); 1734 load_perl (aTHX_ &temp);
1383 } 1735 }
1384 } 1736 }
1385} 1737}
1386 1738
1387SV * 1739SV *
1388is_ready (SV *coro_sv) 1740is_ready (Coro::State coro)
1389 PROTOTYPE: $ 1741 PROTOTYPE: $
1390 ALIAS: 1742 ALIAS:
1391 is_ready = CF_READY 1743 is_ready = CF_READY
1392 is_running = CF_RUNNING 1744 is_running = CF_RUNNING
1393 is_new = CF_NEW 1745 is_new = CF_NEW
1394 is_destroyed = CF_DESTROYED 1746 is_destroyed = CF_DESTROYED
1395 CODE: 1747 CODE:
1396 struct coro *coro = SvSTATE (coro_sv);
1397 RETVAL = boolSV (coro->flags & ix); 1748 RETVAL = boolSV (coro->flags & ix);
1398 OUTPUT: 1749 OUTPUT:
1399 RETVAL 1750 RETVAL
1400 1751
1752void
1753api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1754
1755SV *
1756has_stack (Coro::State coro)
1757 PROTOTYPE: $
1758 CODE:
1759 RETVAL = boolSV (!!coro->cctx);
1760 OUTPUT:
1761 RETVAL
1762
1763int
1764is_traced (Coro::State coro)
1765 PROTOTYPE: $
1766 CODE:
1767 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1768 OUTPUT:
1769 RETVAL
1770
1771IV
1772rss (Coro::State coro)
1773 PROTOTYPE: $
1774 ALIAS:
1775 usecount = 1
1776 CODE:
1777 switch (ix)
1778 {
1779 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1780 case 1: RETVAL = coro->usecount; break;
1781 }
1782 OUTPUT:
1783 RETVAL
1784
1401 1785
1402MODULE = Coro::State PACKAGE = Coro 1786MODULE = Coro::State PACKAGE = Coro
1403 1787
1404BOOT: 1788BOOT:
1405{ 1789{
1406 int i; 1790 int i;
1407 1791
1792 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1793 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1794 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1795
1796 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1797 SvREADONLY_on (coro_current);
1798
1408 coro_stash = gv_stashpv ("Coro", TRUE); 1799 coro_stash = gv_stashpv ("Coro", TRUE);
1409 1800
1410 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1801 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1411 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1802 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1412 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1803 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1413 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1804 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1414 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1805 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1415 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1806 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1416 1807
1417 coro_current = get_sv ("Coro::current", FALSE);
1418 SvREADONLY_on (coro_current);
1419
1420 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1808 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1421 coro_ready[i] = newAV (); 1809 coro_ready[i] = newAV ();
1422 1810
1423 { 1811 {
1424 SV *sv = perl_get_sv("Coro::API", 1); 1812 SV *sv = perl_get_sv ("Coro::API", TRUE);
1813 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1425 1814
1426 coroapi.schedule = api_schedule; 1815 coroapi.schedule = api_schedule;
1427 coroapi.save = api_save;
1428 coroapi.cede = api_cede; 1816 coroapi.cede = api_cede;
1429 coroapi.cede_notself = api_cede_notself; 1817 coroapi.cede_notself = api_cede_notself;
1430 coroapi.ready = api_ready; 1818 coroapi.ready = api_ready;
1431 coroapi.is_ready = api_is_ready; 1819 coroapi.is_ready = api_is_ready;
1432 coroapi.nready = &coro_nready; 1820 coroapi.nready = &coro_nready;
… …
1481 CODE: 1869 CODE:
1482 RETVAL = coro_nready; 1870 RETVAL = coro_nready;
1483 OUTPUT: 1871 OUTPUT:
1484 RETVAL 1872 RETVAL
1485 1873
1874void
1875throw (Coro::State self, SV *throw = &PL_sv_undef)
1876 PROTOTYPE: $;$
1877 CODE:
1878 SvREFCNT_dec (self->throw);
1879 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1880
1881# for async_pool speedup
1882void
1883_pool_1 (SV *cb)
1884 CODE:
1885{
1886 struct coro *coro = SvSTATE (coro_current);
1887 HV *hv = (HV *)SvRV (coro_current);
1888 AV *defav = GvAV (PL_defgv);
1889 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1890 AV *invoke_av;
1891 int i, len;
1892
1893 if (!invoke)
1894 croak ("\3async_pool terminate\2\n");
1895
1896 SvREFCNT_dec (coro->saved_deffh);
1897 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1898
1899 hv_store (hv, "desc", sizeof ("desc") - 1,
1900 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1901
1902 invoke_av = (AV *)SvRV (invoke);
1903 len = av_len (invoke_av);
1904
1905 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1906
1907 if (len > 0)
1908 {
1909 av_fill (defav, len - 1);
1910 for (i = 0; i < len; ++i)
1911 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1912 }
1913
1914 SvREFCNT_dec (invoke);
1915}
1916
1917void
1918_pool_2 (SV *cb)
1919 CODE:
1920{
1921 struct coro *coro = SvSTATE (coro_current);
1922
1923 sv_setsv (cb, &PL_sv_undef);
1924
1925 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1926 coro->saved_deffh = 0;
1927
1928 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1929 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1930 croak ("\3async_pool terminate\2\n");
1931
1932 av_clear (GvAV (PL_defgv));
1933 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1934 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1935
1936 coro->prio = 0;
1937
1938 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1939 api_trace (coro_current, 0);
1940
1941 av_push (av_async_pool, newSVsv (coro_current));
1942}
1943
1944
1486MODULE = Coro::State PACKAGE = Coro::AIO 1945MODULE = Coro::State PACKAGE = Coro::AIO
1487 1946
1488SV * 1947SV *
1489_get_state () 1948_get_state ()
1490 CODE: 1949 CODE:

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines