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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 1.219 by root, Tue Dec 4 19:33:45 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 volatile SV *coro_mortal; /* will be freed after next transfer */
151
152static GV *irsgv; /* $/ */
153static GV *stdoutgv; /* *STDOUT */
154static SV *rv_diehook;
155static SV *rv_warnhook;
156static HV *hv_sig; /* %SIG */
157
158/* async_pool helper stuff */
159static SV *sv_pool_rss;
160static SV *sv_pool_size;
161static AV *av_async_pool;
136 162
137static struct coro_cctx *cctx_first; 163static struct coro_cctx *cctx_first;
138static int cctx_count, cctx_idle; 164static int cctx_count, cctx_idle;
165
166enum {
167 CC_MAPPED = 0x01,
168 CC_NOREUSE = 0x02, /* throw this away after tracing */
169 CC_TRACE = 0x04,
170 CC_TRACE_SUB = 0x08, /* trace sub calls */
171 CC_TRACE_LINE = 0x10, /* trace each statement */
172 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
173};
139 174
140/* this is a structure representing a c-level coroutine */ 175/* this is a structure representing a c-level coroutine */
141typedef struct coro_cctx { 176typedef struct coro_cctx {
142 struct coro_cctx *next; 177 struct coro_cctx *next;
143 178
… …
152 coro_context cctx; 187 coro_context cctx;
153 188
154#if CORO_USE_VALGRIND 189#if CORO_USE_VALGRIND
155 int valgrind_id; 190 int valgrind_id;
156#endif 191#endif
157 char inuse, mapped; 192 unsigned char flags;
158} coro_cctx; 193} coro_cctx;
159 194
160enum { 195enum {
161 CF_RUNNING = 0x0001, /* coroutine is running */ 196 CF_RUNNING = 0x0001, /* coroutine is running */
162 CF_READY = 0x0002, /* coroutine is ready */ 197 CF_READY = 0x0002, /* coroutine is ready */
163 CF_NEW = 0x0004, /* has never been switched to */ 198 CF_NEW = 0x0004, /* has never been switched to */
164 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 199 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
165}; 200};
166 201
202/* the structure where most of the perl state is stored, overlaid on the cxstack */
203typedef struct {
204 SV *defsv;
205 AV *defav;
206 SV *errsv;
207 SV *irsgv;
208#define VAR(name,type) type name;
209# include "state.h"
210#undef VAR
211} perl_slots;
212
213#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
214
167/* this is a structure representing a perl-level coroutine */ 215/* this is a structure representing a perl-level coroutine */
168struct coro { 216struct coro {
169 /* the c coroutine allocated to this perl coroutine, if any */ 217 /* the c coroutine allocated to this perl coroutine, if any */
170 coro_cctx *cctx; 218 coro_cctx *cctx;
171 219
220 /* process data */
221 AV *mainstack;
222 perl_slots *slot; /* basically the saved sp */
223
172 /* data associated with this coroutine (initial args) */ 224 AV *args; /* data associated with this coroutine (initial args) */
173 AV *args; 225 int refcnt; /* coroutines are refcounted, yes */
174 int refcnt;
175 int save; /* CORO_SAVE flags */
176 int flags; /* CF_ flags */ 226 int flags; /* CF_ flags */
227 HV *hv; /* the perl hash associated with this coro, if any */
177 228
178 /* optionally saved, might be zero */ 229 /* statistics */
179 AV *defav; /* @_ */ 230 int usecount; /* number of transfers to this coro */
180 SV *defsv; /* $_ */
181 SV *errsv; /* $@ */
182 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
189 231
190 /* coro process data */ 232 /* coro process data */
191 int prio; 233 int prio;
234 SV *throw; /* exception to be thrown */
235
236 /* async_pool */
237 SV *saved_deffh;
238
239 /* linked list */
240 struct coro *next, *prev;
192}; 241};
193 242
194typedef struct coro *Coro__State; 243typedef struct coro *Coro__State;
195typedef struct coro *Coro__State_or_hashref; 244typedef struct coro *Coro__State_or_hashref;
196 245
… …
205 254
206/* for Coro.pm */ 255/* for Coro.pm */
207static SV *coro_current; 256static SV *coro_current;
208static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 257static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
209static int coro_nready; 258static int coro_nready;
259static struct coro *coro_first;
210 260
211/** 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}
212 292
213static AV * 293static AV *
214coro_clone_padlist (pTHX_ CV *cv) 294coro_clone_padlist (pTHX_ CV *cv)
215{ 295{
216 AV *padlist = CvPADLIST (cv); 296 AV *padlist = CvPADLIST (cv);
… …
264 344
265 /* casting is fun. */ 345 /* casting is fun. */
266 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 346 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
267 free_padlist (aTHX_ padlist); 347 free_padlist (aTHX_ padlist);
268 348
269 SvREFCNT_dec (av);
270
271 return 0; 349 return 0;
272} 350}
273 351
274#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
275 354
276static 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};
277 359
278#define CORO_MAGIC(cv) \ 360#define CORO_MAGIC(sv,type) \
279 SvMAGIC (cv) \ 361 SvMAGIC (sv) \
280 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 362 ? SvMAGIC (sv)->mg_type == type \
281 ? SvMAGIC (cv) \ 363 ? SvMAGIC (sv) \
282 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 364 : mg_find (sv, type) \
283 : 0 365 : 0
284 366
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
285/* the next two functions merely cache the padlists */ 396/* the next two functions merely cache the padlists */
286static void 397static void
287get_padlist (pTHX_ CV *cv) 398get_padlist (pTHX_ CV *cv)
288{ 399{
289 MAGIC *mg = CORO_MAGIC (cv); 400 MAGIC *mg = CORO_MAGIC_cv (cv);
290 AV *av; 401 AV *av;
291 402
292 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 403 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
293 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 404 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
294 else 405 else
295 { 406 {
296#if CORO_PREFER_PERL_FUNCTIONS 407#if CORO_PREFER_PERL_FUNCTIONS
297 /* this is probably cleaner, but also slower? */ 408 /* this is probably cleaner, but also slower? */
… …
306} 417}
307 418
308static void 419static void
309put_padlist (pTHX_ CV *cv) 420put_padlist (pTHX_ CV *cv)
310{ 421{
311 MAGIC *mg = CORO_MAGIC (cv); 422 MAGIC *mg = CORO_MAGIC_cv (cv);
312 AV *av; 423 AV *av;
313 424
314 if (!mg) 425 if (expect_false (!mg))
315 { 426 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
316 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
317 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
318 mg->mg_virtual = &vtbl_coro;
319 mg->mg_obj = (SV *)newAV ();
320 }
321 427
322 av = (AV *)mg->mg_obj; 428 av = (AV *)mg->mg_obj;
323 429
324 if (AvFILLp (av) >= AvMAX (av)) 430 if (expect_false (AvFILLp (av) >= AvMAX (av)))
325 av_extend (av, AvMAX (av) + 1); 431 av_extend (av, AvMAX (av) + 1);
326 432
327 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 433 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
328} 434}
329 435
330/** load & save, init *******************************************************/ 436/** load & save, init *******************************************************/
331 437
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 438static void
338load_perl (pTHX_ Coro__State c) 439load_perl (pTHX_ Coro__State c)
339{ 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
340#define VAR(name,type) PL_ ## name = c->name; 451 #define VAR(name,type) PL_ ## name = slot->name;
341# include "state.h" 452 # include "state.h"
342#undef VAR 453 #undef VAR
343
344 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
345 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
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 }
363 454
364 { 455 {
365 dSP; 456 dSP;
457
366 CV *cv; 458 CV *cv;
367 459
368 /* now do the ugly restore mess */ 460 /* now do the ugly restore mess */
369 while ((cv = (CV *)POPs)) 461 while (expect_true (cv = (CV *)POPs))
370 { 462 {
371 put_padlist (aTHX_ cv); /* mark this padlist as available */ 463 put_padlist (aTHX_ cv); /* mark this padlist as available */
372 CvDEPTH (cv) = PTR2IV (POPs); 464 CvDEPTH (cv) = PTR2IV (POPs);
373 CvPADLIST (cv) = (AV *)POPs; 465 CvPADLIST (cv) = (AV *)POPs;
374 } 466 }
375 467
376 PUTBACK; 468 PUTBACK;
377 } 469 }
378 assert (!PL_comppad || AvARRAY (PL_comppad));//D
379} 470}
380 471
381static void 472static void
382save_perl (pTHX_ Coro__State c) 473save_perl (pTHX_ Coro__State c)
383{ 474{
384 assert (!PL_comppad || AvARRAY (PL_comppad));//D
385 { 475 {
386 dSP; 476 dSP;
387 I32 cxix = cxstack_ix; 477 I32 cxix = cxstack_ix;
388 PERL_CONTEXT *ccstk = cxstack; 478 PERL_CONTEXT *ccstk = cxstack;
389 PERL_SI *top_si = PL_curstackinfo; 479 PERL_SI *top_si = PL_curstackinfo;
… …
391 /* 481 /*
392 * 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
393 * (and reinitialize) all cv's in the whole callchain :( 483 * (and reinitialize) all cv's in the whole callchain :(
394 */ 484 */
395 485
396 EXTEND (SP, 3 + 1);
397 PUSHs (Nullsv); 486 XPUSHs (Nullsv);
398 /* this loop was inspired by pp_caller */ 487 /* this loop was inspired by pp_caller */
399 for (;;) 488 for (;;)
400 { 489 {
401 while (cxix >= 0) 490 while (expect_true (cxix >= 0))
402 { 491 {
403 PERL_CONTEXT *cx = &ccstk[cxix--]; 492 PERL_CONTEXT *cx = &ccstk[cxix--];
404 493
405 if (CxTYPE (cx) == CXt_SUB) 494 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
406 { 495 {
407 CV *cv = cx->blk_sub.cv; 496 CV *cv = cx->blk_sub.cv;
408 497
409 if (CvDEPTH (cv)) 498 if (expect_true (CvDEPTH (cv)))
410 { 499 {
411 EXTEND (SP, 3); 500 EXTEND (SP, 3);
412 PUSHs ((SV *)CvPADLIST (cv)); 501 PUSHs ((SV *)CvPADLIST (cv));
413 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 502 PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
414 PUSHs ((SV *)cv); 503 PUSHs ((SV *)cv);
… …
417 get_padlist (aTHX_ cv); 506 get_padlist (aTHX_ cv);
418 } 507 }
419 } 508 }
420 } 509 }
421 510
422 if (top_si->si_type == PERLSI_MAIN) 511 if (expect_true (top_si->si_type == PERLSI_MAIN))
423 break; 512 break;
424 513
425 top_si = top_si->si_prev; 514 top_si = top_si->si_prev;
426 ccstk = top_si->si_cxstack; 515 ccstk = top_si->si_cxstack;
427 cxix = top_si->si_cxix; 516 cxix = top_si->si_cxix;
428 } 517 }
429 518
430 PUTBACK; 519 PUTBACK;
431 } 520 }
432 521
433 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 */
434 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 523 /* we manually unroll here, as usually 2 slots is enough */
435 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 524 if (SLOT_COUNT >= 1) CXINC;
436 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 525 if (SLOT_COUNT >= 2) CXINC;
437 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 */
438 533
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
439#define VAR(name,type)c->name = PL_ ## name; 544 #define VAR(name,type) slot->name = PL_ ## name;
440# include "state.h" 545 # include "state.h"
441#undef VAR 546 #undef VAR
547 }
442} 548}
443 549
444/* 550/*
445 * allocate various perl stacks. This is an exact copy 551 * allocate various perl stacks. This is an exact copy
446 * of perl.c:init_stacks, except that it uses less memory 552 * of perl.c:init_stacks, except that it uses less memory
… …
451# define coro_init_stacks init_stacks 557# define coro_init_stacks init_stacks
452#else 558#else
453static void 559static void
454coro_init_stacks (pTHX) 560coro_init_stacks (pTHX)
455{ 561{
456 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 562 PL_curstackinfo = new_stackinfo(32, 8);
457 PL_curstackinfo->si_type = PERLSI_MAIN; 563 PL_curstackinfo->si_type = PERLSI_MAIN;
458 PL_curstack = PL_curstackinfo->si_stack; 564 PL_curstack = PL_curstackinfo->si_stack;
459 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 565 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
460 566
461 PL_stack_base = AvARRAY(PL_curstack); 567 PL_stack_base = AvARRAY(PL_curstack);
462 PL_stack_sp = PL_stack_base; 568 PL_stack_sp = PL_stack_base;
463 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 569 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
464 570
465 New(50,PL_tmps_stack,128,SV*); 571 New(50,PL_tmps_stack,32,SV*);
466 PL_tmps_floor = -1; 572 PL_tmps_floor = -1;
467 PL_tmps_ix = -1; 573 PL_tmps_ix = -1;
468 PL_tmps_max = 128; 574 PL_tmps_max = 32;
469 575
470 New(54,PL_markstack,32,I32); 576 New(54,PL_markstack,16,I32);
471 PL_markstack_ptr = PL_markstack; 577 PL_markstack_ptr = PL_markstack;
472 PL_markstack_max = PL_markstack + 32; 578 PL_markstack_max = PL_markstack + 16;
473 579
474#ifdef SET_MARK_OFFSET 580#ifdef SET_MARK_OFFSET
475 SET_MARK_OFFSET; 581 SET_MARK_OFFSET;
476#endif 582#endif
477 583
478 New(54,PL_scopestack,32,I32); 584 New(54,PL_scopestack,8,I32);
479 PL_scopestack_ix = 0; 585 PL_scopestack_ix = 0;
480 PL_scopestack_max = 32; 586 PL_scopestack_max = 8;
481 587
482 New(54,PL_savestack,64,ANY); 588 New(54,PL_savestack,24,ANY);
483 PL_savestack_ix = 0; 589 PL_savestack_ix = 0;
484 PL_savestack_max = 64; 590 PL_savestack_max = 24;
485 591
486#if !PERL_VERSION_ATLEAST (5,9,0) 592#if !PERL_VERSION_ATLEAST (5,9,0)
487 New(54,PL_retstack,16,OP*); 593 New(54,PL_retstack,4,OP*);
488 PL_retstack_ix = 0; 594 PL_retstack_ix = 0;
489 PL_retstack_max = 16; 595 PL_retstack_max = 4;
490#endif 596#endif
491} 597}
492#endif 598#endif
493 599
494/* 600/*
495 * destroy the stacks, the callchain etc... 601 * destroy the stacks, the callchain etc...
496 */ 602 */
497static void 603static void
498coro_destroy_stacks (pTHX) 604coro_destroy_stacks (pTHX)
499{ 605{
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) 606 while (PL_curstackinfo->si_next)
518 PL_curstackinfo = PL_curstackinfo->si_next; 607 PL_curstackinfo = PL_curstackinfo->si_next;
519 608
520 while (PL_curstackinfo) 609 while (PL_curstackinfo)
521 { 610 {
… …
536#if !PERL_VERSION_ATLEAST (5,9,0) 625#if !PERL_VERSION_ATLEAST (5,9,0)
537 Safefree (PL_retstack); 626 Safefree (PL_retstack);
538#endif 627#endif
539} 628}
540 629
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
541/** coroutine stack handling ************************************************/ 667/** coroutine stack handling ************************************************/
542 668
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 */
543static 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
544setup_coro (pTHX_ struct coro *coro) 698coro_setup (pTHX_ struct coro *coro)
545{ 699{
546 /* 700 /*
547 * emulate part of the perl startup here. 701 * emulate part of the perl startup here.
548 */ 702 */
549 coro_init_stacks (aTHX); 703 coro_init_stacks (aTHX);
550 704
705 PL_runops = RUNOPS_DEFAULT;
551 PL_curcop = &PL_compiling; 706 PL_curcop = &PL_compiling;
552 PL_in_eval = EVAL_NULL; 707 PL_in_eval = EVAL_NULL;
553 PL_comppad = 0; 708 PL_comppad = 0;
554 PL_curpm = 0; 709 PL_curpm = 0;
710 PL_curpad = 0;
555 PL_localizing = 0; 711 PL_localizing = 0;
556 PL_dirty = 0; 712 PL_dirty = 0;
557 PL_restartop = 0; 713 PL_restartop = 0;
558 714
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
559 { 731 {
560 dSP; 732 dSP;
561 LOGOP myop; 733 LOGOP myop;
562 734
563 SvREFCNT_dec (GvAV (PL_defgv));
564 GvAV (PL_defgv) = coro->args; coro->args = 0;
565
566 Zero (&myop, 1, LOGOP); 735 Zero (&myop, 1, LOGOP);
567 myop.op_next = Nullop; 736 myop.op_next = Nullop;
568 myop.op_flags = OPf_WANT_VOID; 737 myop.op_flags = OPf_WANT_VOID;
569 738
570 PUSHMARK (SP); 739 PUSHMARK (SP);
571 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 740 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
572 PUTBACK; 741 PUTBACK;
573 PL_op = (OP *)&myop; 742 PL_op = (OP *)&myop;
574 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 743 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575 SPAGAIN; 744 SPAGAIN;
576 } 745 }
577 746
578 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);
579} 789}
580 790
581static void 791static void
582free_coro_mortal (pTHX) 792free_coro_mortal (pTHX)
583{ 793{
584 if (coro_mortal) 794 if (expect_true (coro_mortal))
585 { 795 {
586 SvREFCNT_dec (coro_mortal); 796 SvREFCNT_dec (coro_mortal);
587 coro_mortal = 0; 797 coro_mortal = 0;
588 } 798 }
589} 799}
590 800
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;
923}
924
591/* 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 */
926/* _cctx_init should be careful, as it could be called at almost any time */
927/* during execution of a perl program */
592static void NOINLINE 928static void NOINLINE
593prepare_cctx (pTHX_ coro_cctx *cctx) 929cctx_prepare (pTHX_ coro_cctx *cctx)
594{ 930{
595 dSP; 931 dSP;
596 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;
597 938
598 Zero (&myop, 1, LOGOP); 939 Zero (&myop, 1, LOGOP);
599 myop.op_next = PL_op; 940 myop.op_next = PL_op;
600 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 941 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
601 942
… …
607 PL_op = (OP *)&myop; 948 PL_op = (OP *)&myop;
608 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 949 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
609 SPAGAIN; 950 SPAGAIN;
610} 951}
611 952
953/*
954 * this is a _very_ stripped down perl interpreter ;)
955 */
612static void 956static void
613coro_run (void *arg) 957cctx_run (void *arg)
614{ 958{
615 dTHX; 959 dTHX;
616 960
617 /* coro_run is the alternative tail of transfer(), so unlock here. */ 961 /* cctx_run is the alternative tail of transfer(), so unlock here. */
618 UNLOCK; 962 UNLOCK;
619 963
620 /* 964 /* we now skip the entersub that lead to transfer() */
621 * this is a _very_ stripped down perl interpreter ;) 965 PL_op = PL_op->op_next;
622 */
623 PL_top_env = &PL_start_env;
624 966
625 /* inject call to cctx_init */ 967 /* inject a fake subroutine call to cctx_init */
626 prepare_cctx (aTHX_ (coro_cctx *)arg); 968 cctx_prepare (aTHX_ (coro_cctx *)arg);
627 969
628 /* somebody will hit me for both perl_run and PL_restartop */ 970 /* somebody or something will hit me for both perl_run and PL_restartop */
629 PL_restartop = PL_op; 971 PL_restartop = PL_op;
630 perl_run (PL_curinterp); 972 perl_run (PL_curinterp);
631 973
632 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 974 /*
633 abort (); 975 * If perl-run returns we assume exit() was being called or the coro
976 * fell off the end, which seems to be the only valid (non-bug)
977 * reason for perl_run to return. We try to exit by jumping to the
978 * bootstrap-time "top" top_env, as we cannot restore the "main"
979 * coroutine as Coro has no such concept
980 */
981 PL_top_env = main_top_env;
982 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
634} 983}
635 984
636static coro_cctx * 985static coro_cctx *
637cctx_new () 986cctx_new ()
638{ 987{
… …
643 ++cctx_count; 992 ++cctx_count;
644 993
645 Newz (0, cctx, 1, coro_cctx); 994 Newz (0, cctx, 1, coro_cctx);
646 995
647#if HAVE_MMAP 996#if HAVE_MMAP
648
649 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;
650 /* mmap supposedly does allocate-on-write for us */ 998 /* 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); 999 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
652 1000
653 if (cctx->sptr != (void *)-1) 1001 if (cctx->sptr != (void *)-1)
… …
655# if CORO_STACKGUARD 1003# if CORO_STACKGUARD
656 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1004 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
657# endif 1005# endif
658 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1006 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
659 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1007 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
660 cctx->mapped = 1; 1008 cctx->flags |= CC_MAPPED;
661 } 1009 }
662 else 1010 else
663#endif 1011#endif
664 { 1012 {
665 cctx->ssize = coro_stacksize * (long)sizeof (long); 1013 cctx->ssize = coro_stacksize * (long)sizeof (long);
… …
674 stack_start = cctx->sptr; 1022 stack_start = cctx->sptr;
675 stack_size = cctx->ssize; 1023 stack_size = cctx->ssize;
676 } 1024 }
677 1025
678 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1026 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
679 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);
680 1028
681 return cctx; 1029 return cctx;
682} 1030}
683 1031
684static void 1032static void
… …
692#if CORO_USE_VALGRIND 1040#if CORO_USE_VALGRIND
693 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1041 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694#endif 1042#endif
695 1043
696#if HAVE_MMAP 1044#if HAVE_MMAP
697 if (cctx->mapped) 1045 if (cctx->flags & CC_MAPPED)
698 munmap (cctx->sptr, cctx->ssize); 1046 munmap (cctx->sptr, cctx->ssize);
699 else 1047 else
700#endif 1048#endif
701 Safefree (cctx->sptr); 1049 Safefree (cctx->sptr);
702 1050
703 Safefree (cctx); 1051 Safefree (cctx);
704} 1052}
705 1053
1054/* wether this cctx should be destructed */
1055#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1056
706static coro_cctx * 1057static coro_cctx *
707cctx_get (pTHX) 1058cctx_get (pTHX)
708{ 1059{
709 while (cctx_first) 1060 while (expect_true (cctx_first))
710 { 1061 {
711 coro_cctx *cctx = cctx_first; 1062 coro_cctx *cctx = cctx_first;
712 cctx_first = cctx->next; 1063 cctx_first = cctx->next;
713 --cctx_idle; 1064 --cctx_idle;
714 1065
715 if (cctx->ssize >= coro_stacksize) 1066 if (expect_true (!CCTX_EXPIRED (cctx)))
716 return cctx; 1067 return cctx;
717 1068
718 cctx_destroy (cctx); 1069 cctx_destroy (cctx);
719 } 1070 }
720 1071
721 PL_op = PL_op->op_next;
722 return cctx_new (); 1072 return cctx_new ();
723} 1073}
724 1074
725static void 1075static void
726cctx_put (coro_cctx *cctx) 1076cctx_put (coro_cctx *cctx)
727{ 1077{
728 /* free another cctx if overlimit */ 1078 /* free another cctx if overlimit */
729 if (cctx_idle >= MAX_IDLE_CCTX) 1079 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
730 { 1080 {
731 coro_cctx *first = cctx_first; 1081 coro_cctx *first = cctx_first;
732 cctx_first = first->next; 1082 cctx_first = first->next;
733 --cctx_idle; 1083 --cctx_idle;
734 1084
735 assert (!first->inuse);
736 cctx_destroy (first); 1085 cctx_destroy (first);
737 } 1086 }
738 1087
739 ++cctx_idle; 1088 ++cctx_idle;
740 cctx->next = cctx_first; 1089 cctx->next = cctx_first;
741 cctx_first = cctx; 1090 cctx_first = cctx;
742} 1091}
743 1092
744/** coroutine switching *****************************************************/ 1093/** coroutine switching *****************************************************/
745 1094
746/* 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 */
747static void NOINLINE 1121static void NOINLINE
748transfer (pTHX_ struct coro *prev, struct coro *next) 1122transfer (pTHX_ struct coro *prev, struct coro *next)
749{ 1123{
750 dSTACKLEVEL; 1124 dSTACKLEVEL;
1125 static volatile int has_throw;
751 1126
752 /* sometimes transfer is only called to set idle_sp */ 1127 /* sometimes transfer is only called to set idle_sp */
753 if (!next) 1128 if (expect_false (!next))
754 { 1129 {
755 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1130 ((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 */ 1131 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
757 } 1132 }
758 else if (prev != next) 1133 else if (expect_true (prev != next))
759 { 1134 {
760 coro_cctx *prev__cctx; 1135 coro_cctx *prev__cctx;
761 1136
762 if (prev->flags & CF_NEW) 1137 if (expect_false (prev->flags & CF_NEW))
763 { 1138 {
764 /* create a new empty context */ 1139 /* create a new empty context */
765 Newz (0, prev->cctx, 1, coro_cctx); 1140 Newz (0, prev->cctx, 1, coro_cctx);
766 prev->cctx->inuse = 1;
767 prev->flags &= ~CF_NEW; 1141 prev->flags &= ~CF_NEW;
768 prev->flags |= CF_RUNNING; 1142 prev->flags |= CF_RUNNING;
769 } 1143 }
770 1144
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; 1145 prev->flags &= ~CF_RUNNING;
782 next->flags |= CF_RUNNING; 1146 next->flags |= CF_RUNNING;
783 1147
784 LOCK; 1148 LOCK;
785 1149
1150 /* first get rid of the old state */
1151 save_perl (aTHX_ prev);
1152
786 if (next->flags & CF_NEW) 1153 if (expect_false (next->flags & CF_NEW))
787 { 1154 {
788 /* need to start coroutine */ 1155 /* need to start coroutine */
789 next->flags &= ~CF_NEW; 1156 next->flags &= ~CF_NEW;
790 /* first get rid of the old state */
791 save_perl (aTHX_ prev);
792 /* setup coroutine call */ 1157 /* setup coroutine call */
793 setup_coro (aTHX_ next); 1158 coro_setup (aTHX_ next);
794 /* need a new stack */
795 assert (!next->cctx);
796 } 1159 }
797 else 1160 else
798 {
799 /* coroutine already started */
800 save_perl (aTHX_ prev);
801 load_perl (aTHX_ next); 1161 load_perl (aTHX_ next);
802 }
803 1162
804 prev__cctx = prev->cctx; 1163 prev__cctx = prev->cctx;
805 1164
806 /* possibly "free" the cctx */ 1165 /* possibly "free" the cctx */
807 if (prev__cctx->idle_sp == STACKLEVEL) 1166 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
808 { 1167 {
809 /* 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 */
810 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));
811 1170
812 prev->cctx = 0; 1171 prev->cctx = 0;
813 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
814 cctx_put (prev__cctx); 1179 cctx_put (prev__cctx);
815 prev__cctx->inuse = 0;
816 } 1180 }
817 1181
1182 ++next->usecount;
1183
818 if (!next->cctx) 1184 if (expect_true (!next->cctx))
819 {
820 next->cctx = cctx_get (aTHX); 1185 next->cctx = cctx_get (aTHX);
821 assert (!next->cctx->inuse);
822 next->cctx->inuse = 1;
823 }
824 1186
1187 has_throw = !!next->throw;
1188
825 if (prev__cctx != next->cctx) 1189 if (expect_false (prev__cctx != next->cctx))
826 { 1190 {
827 prev__cctx->top_env = PL_top_env; 1191 prev__cctx->top_env = PL_top_env;
828 PL_top_env = next->cctx->top_env; 1192 PL_top_env = next->cctx->top_env;
829 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1193 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
830 } 1194 }
831 1195
832 free_coro_mortal (aTHX); 1196 free_coro_mortal (aTHX);
833 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 }
834 } 1211 }
835} 1212}
836 1213
837struct transfer_args 1214struct transfer_args
838{ 1215{
839 struct coro *prev, *next; 1216 struct coro *prev, *next;
840}; 1217};
841 1218
842#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)
843 1221
844/** high level stuff ********************************************************/ 1222/** high level stuff ********************************************************/
845 1223
846static int 1224static int
847coro_state_destroy (pTHX_ struct coro *coro) 1225coro_state_destroy (pTHX_ struct coro *coro)
… …
864 1242
865 if (coro->mainstack && coro->mainstack != main_mainstack) 1243 if (coro->mainstack && coro->mainstack != main_mainstack)
866 { 1244 {
867 struct coro temp; 1245 struct coro temp;
868 1246
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) 1247 if (coro->flags & CF_RUNNING)
875 croak ("FATAL: tried to destroy currently running coroutine"); 1248 croak ("FATAL: tried to destroy currently running coroutine");
876 1249
877 save_perl (aTHX_ &temp); 1250 save_perl (aTHX_ &temp);
878 load_perl (aTHX_ coro); 1251 load_perl (aTHX_ coro);
879 1252
880 coro_destroy_stacks (aTHX); 1253 coro_destroy (aTHX_ coro);
881 1254
882 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1255 load_perl (aTHX_ &temp);
883 1256
884 coro->mainstack = 0; 1257 coro->slot = 0;
885 } 1258 }
886 1259
887 cctx_destroy (coro->cctx); 1260 cctx_destroy (coro->cctx);
888 SvREFCNT_dec (coro->args); 1261 SvREFCNT_dec (coro->args);
889 1262
1263 if (coro->next) coro->next->prev = coro->prev;
1264 if (coro->prev) coro->prev->next = coro->next;
1265 if (coro == coro_first) coro_first = coro->next;
1266
890 return 1; 1267 return 1;
891} 1268}
892 1269
893static int 1270static int
894coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1271coro_state_free (pTHX_ SV *sv, MAGIC *mg)
895{ 1272{
896 struct coro *coro = (struct coro *)mg->mg_ptr; 1273 struct coro *coro = (struct coro *)mg->mg_ptr;
897 mg->mg_ptr = 0; 1274 mg->mg_ptr = 0;
1275
1276 coro->hv = 0;
898 1277
899 if (--coro->refcnt < 0) 1278 if (--coro->refcnt < 0)
900 { 1279 {
901 coro_state_destroy (aTHX_ coro); 1280 coro_state_destroy (aTHX_ coro);
902 Safefree (coro); 1281 Safefree (coro);
… …
924#else 1303#else
925# define MGf_DUP 0 1304# define MGf_DUP 0
926#endif 1305#endif
927}; 1306};
928 1307
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 1308static void
953prepare_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)
954{ 1310{
955 ta->prev = SvSTATE (prev_sv); 1311 ta->prev = SvSTATE (prev_sv);
956 ta->next = SvSTATE (next_sv); 1312 ta->next = SvSTATE (next_sv);
1313 TRANSFER_CHECK (*ta);
957} 1314}
958 1315
959static void 1316static void
960api_transfer (SV *prev_sv, SV *next_sv) 1317api_transfer (SV *prev_sv, SV *next_sv)
961{ 1318{
… …
964 1321
965 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1322 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
966 TRANSFER (ta); 1323 TRANSFER (ta);
967} 1324}
968 1325
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}
981
982/** Coro ********************************************************************/ 1326/** Coro ********************************************************************/
983 1327
984static void 1328static void
985coro_enq (pTHX_ SV *coro_sv) 1329coro_enq (pTHX_ SV *coro_sv)
986{ 1330{
987 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1331 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
988} 1332}
989 1333
990static SV * 1334static SV *
991coro_deq (pTHX_ int min_prio) 1335coro_deq (pTHX)
992{ 1336{
993 int prio = PRIO_MAX - PRIO_MIN; 1337 int prio;
994 1338
995 min_prio -= PRIO_MIN;
996 if (min_prio < 0)
997 min_prio = 0;
998
999 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1339 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1000 if (AvFILLp (coro_ready [prio]) >= 0) 1340 if (AvFILLp (coro_ready [prio]) >= 0)
1001 return av_shift (coro_ready [prio]); 1341 return av_shift (coro_ready [prio]);
1002 1342
1003 return 0; 1343 return 0;
1004} 1344}
… …
1040 SV *prev_sv, *next_sv; 1380 SV *prev_sv, *next_sv;
1041 1381
1042 for (;;) 1382 for (;;)
1043 { 1383 {
1044 LOCK; 1384 LOCK;
1045 next_sv = coro_deq (aTHX_ PRIO_MIN); 1385 next_sv = coro_deq (aTHX);
1046 1386
1047 /* nothing to schedule: call the idle handler */ 1387 /* nothing to schedule: call the idle handler */
1048 if (!next_sv) 1388 if (expect_false (!next_sv))
1049 { 1389 {
1050 dSP; 1390 dSP;
1051 UNLOCK; 1391 UNLOCK;
1052 1392
1053 ENTER; 1393 ENTER;
1054 SAVETMPS; 1394 SAVETMPS;
1055 1395
1056 PUSHMARK (SP); 1396 PUSHMARK (SP);
1057 PUTBACK; 1397 PUTBACK;
1058 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1398 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1399 SPAGAIN;
1059 1400
1060 FREETMPS; 1401 FREETMPS;
1061 LEAVE; 1402 LEAVE;
1062 continue; 1403 continue;
1063 } 1404 }
1064 1405
1065 ta->next = SvSTATE (next_sv); 1406 ta->next = SvSTATE (next_sv);
1066 1407
1067 /* cannot transfer to destroyed coros, skip and look for next */ 1408 /* cannot transfer to destroyed coros, skip and look for next */
1068 if (ta->next->flags & CF_DESTROYED) 1409 if (expect_false (ta->next->flags & CF_DESTROYED))
1069 { 1410 {
1070 UNLOCK; 1411 UNLOCK;
1071 SvREFCNT_dec (next_sv); 1412 SvREFCNT_dec (next_sv);
1072 /* coro_nready is already taken care of by destroy */ 1413 /* coro_nready is already taken care of by destroy */
1073 continue; 1414 continue;
… …
1078 break; 1419 break;
1079 } 1420 }
1080 1421
1081 /* free this only after the transfer */ 1422 /* free this only after the transfer */
1082 prev_sv = SvRV (coro_current); 1423 prev_sv = SvRV (coro_current);
1083 SvRV_set (coro_current, next_sv);
1084 ta->prev = SvSTATE (prev_sv); 1424 ta->prev = SvSTATE (prev_sv);
1085 1425 TRANSFER_CHECK (*ta);
1086 assert (ta->next->flags & CF_READY); 1426 assert (ta->next->flags & CF_READY);
1087 ta->next->flags &= ~CF_READY; 1427 ta->next->flags &= ~CF_READY;
1428 SvRV_set (coro_current, next_sv);
1088 1429
1089 LOCK; 1430 LOCK;
1090 free_coro_mortal (aTHX); 1431 free_coro_mortal (aTHX);
1091 coro_mortal = prev_sv; 1432 coro_mortal = prev_sv;
1092 UNLOCK; 1433 UNLOCK;
… …
1129 dTHX; 1470 dTHX;
1130 struct transfer_args ta; 1471 struct transfer_args ta;
1131 1472
1132 prepare_cede (aTHX_ &ta); 1473 prepare_cede (aTHX_ &ta);
1133 1474
1134 if (ta.prev != ta.next) 1475 if (expect_true (ta.prev != ta.next))
1135 { 1476 {
1136 TRANSFER (ta); 1477 TRANSFER (ta);
1137 return 1; 1478 return 1;
1138 } 1479 }
1139 else 1480 else
… …
1153 } 1494 }
1154 else 1495 else
1155 return 0; 1496 return 0;
1156} 1497}
1157 1498
1499static void
1500api_trace (SV *coro_sv, int flags)
1501{
1502 dTHX;
1503 struct coro *coro = SvSTATE (coro_sv);
1504
1505 if (flags & CC_TRACE)
1506 {
1507 if (!coro->cctx)
1508 coro->cctx = cctx_new ();
1509 else if (!(coro->cctx->flags & CC_TRACE))
1510 croak ("cannot enable tracing on coroutine with custom stack");
1511
1512 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1513 }
1514 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1515 {
1516 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1517
1518 if (coro->flags & CF_RUNNING)
1519 PL_runops = RUNOPS_DEFAULT;
1520 else
1521 coro->slot->runops = RUNOPS_DEFAULT;
1522 }
1523}
1524
1158MODULE = Coro::State PACKAGE = Coro::State 1525MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1159 1526
1160PROTOTYPES: DISABLE 1527PROTOTYPES: DISABLE
1161 1528
1162BOOT: 1529BOOT:
1163{ 1530{
1164#ifdef USE_ITHREADS 1531#ifdef USE_ITHREADS
1165 MUTEX_INIT (&coro_mutex); 1532 MUTEX_INIT (&coro_mutex);
1166#endif 1533#endif
1167 BOOT_PAGESIZE; 1534 BOOT_PAGESIZE;
1168 1535
1536 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1537 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1538#if 0
1539 orig_sigelem_get = PL_vtbl_sigelem.svt_get;
1540 PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1541#endif
1542 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1543 rv_diehook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1544 rv_warnhook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1545
1169 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1546 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1170 1547
1171 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1548 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1172 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 1549 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)); 1550 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1177 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1551 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1178 1552
1179 main_mainstack = PL_mainstack; 1553 main_mainstack = PL_mainstack;
1554 main_top_env = PL_top_env;
1555
1556 while (main_top_env->je_prev)
1557 main_top_env = main_top_env->je_prev;
1180 1558
1181 coroapi.ver = CORO_API_VERSION; 1559 coroapi.ver = CORO_API_VERSION;
1560 coroapi.rev = CORO_API_REVISION;
1182 coroapi.transfer = api_transfer; 1561 coroapi.transfer = api_transfer;
1183 1562
1184 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1563 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1185} 1564}
1186 1565
1187SV * 1566SV *
1188new (char *klass, ...) 1567new (char *klass, ...)
1189 CODE: 1568 CODE:
1190{ 1569{
1191 struct coro *coro; 1570 struct coro *coro;
1571 MAGIC *mg;
1192 HV *hv; 1572 HV *hv;
1193 int i; 1573 int i;
1194 1574
1195 Newz (0, coro, 1, struct coro); 1575 Newz (0, coro, 1, struct coro);
1196 coro->args = newAV (); 1576 coro->args = newAV ();
1197 coro->save = CORO_SAVE_DEF;
1198 coro->flags = CF_NEW; 1577 coro->flags = CF_NEW;
1199 1578
1579 if (coro_first) coro_first->prev = coro;
1580 coro->next = coro_first;
1581 coro_first = coro;
1582
1200 hv = newHV (); 1583 coro->hv = hv = newHV ();
1201 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1584 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1585 mg->mg_flags |= MGf_DUP;
1202 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1586 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1203 1587
1588 av_extend (coro->args, items - 1);
1204 for (i = 1; i < items; i++) 1589 for (i = 1; i < items; i++)
1205 av_push (coro->args, newSVsv (ST (i))); 1590 av_push (coro->args, newSVsv (ST (i)));
1206} 1591}
1207 OUTPUT: 1592 OUTPUT:
1208 RETVAL 1593 RETVAL
1209 1594
1210int 1595# these not obviously related functions are all rolled into the same xs
1211save (SV *coro, int new_save = -1) 1596# function to increase chances that they all will call transfer with the same
1212 CODE: 1597# 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 1598void
1229_set_stacklevel (...) 1599_set_stacklevel (...)
1230 ALIAS: 1600 ALIAS:
1231 Coro::State::transfer = 1 1601 Coro::State::transfer = 1
1232 Coro::schedule = 2 1602 Coro::schedule = 2
… …
1234 Coro::cede_notself = 4 1604 Coro::cede_notself = 4
1235 CODE: 1605 CODE:
1236{ 1606{
1237 struct transfer_args ta; 1607 struct transfer_args ta;
1238 1608
1609 PUTBACK;
1239 switch (ix) 1610 switch (ix)
1240 { 1611 {
1241 case 0: 1612 case 0:
1242 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1613 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1243 ta.next = 0; 1614 ta.next = 0;
… …
1262 if (!prepare_cede_notself (aTHX_ &ta)) 1633 if (!prepare_cede_notself (aTHX_ &ta))
1263 XSRETURN_EMPTY; 1634 XSRETURN_EMPTY;
1264 1635
1265 break; 1636 break;
1266 } 1637 }
1638 SPAGAIN;
1267 1639
1268 BARRIER; 1640 BARRIER;
1641 PUTBACK;
1269 TRANSFER (ta); 1642 TRANSFER (ta);
1270 1643 SPAGAIN; /* might be the sp of a different coroutine now */
1271 if (GIMME_V != G_VOID && ta.next != ta.prev) 1644 /* be extra careful not to ever do anything after TRANSFER */
1272 XSRETURN_YES;
1273} 1645}
1274 1646
1275bool 1647bool
1276_destroy (SV *coro_sv) 1648_destroy (SV *coro_sv)
1277 CODE: 1649 CODE:
… …
1307 CODE: 1679 CODE:
1308 RETVAL = cctx_idle; 1680 RETVAL = cctx_idle;
1309 OUTPUT: 1681 OUTPUT:
1310 RETVAL 1682 RETVAL
1311 1683
1684void
1685list ()
1686 PPCODE:
1687{
1688 struct coro *coro;
1689 for (coro = coro_first; coro; coro = coro->next)
1690 if (coro->hv)
1691 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1692}
1693
1694void
1695call (Coro::State coro, SV *coderef)
1696 ALIAS:
1697 eval = 1
1698 CODE:
1699{
1700 if (coro->mainstack)
1701 {
1702 struct coro temp;
1703
1704 if (!(coro->flags & CF_RUNNING))
1705 {
1706 PUTBACK;
1707 save_perl (aTHX_ &temp);
1708 load_perl (aTHX_ coro);
1709 }
1710
1711 {
1712 dSP;
1713 ENTER;
1714 SAVETMPS;
1715 PUTBACK;
1716 PUSHSTACK;
1717 PUSHMARK (SP);
1718
1719 if (ix)
1720 eval_sv (coderef, 0);
1721 else
1722 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1723
1724 POPSTACK;
1725 SPAGAIN;
1726 FREETMPS;
1727 LEAVE;
1728 PUTBACK;
1729 }
1730
1731 if (!(coro->flags & CF_RUNNING))
1732 {
1733 save_perl (aTHX_ coro);
1734 load_perl (aTHX_ &temp);
1735 SPAGAIN;
1736 }
1737 }
1738}
1739
1740SV *
1741is_ready (Coro::State coro)
1742 PROTOTYPE: $
1743 ALIAS:
1744 is_ready = CF_READY
1745 is_running = CF_RUNNING
1746 is_new = CF_NEW
1747 is_destroyed = CF_DESTROYED
1748 CODE:
1749 RETVAL = boolSV (coro->flags & ix);
1750 OUTPUT:
1751 RETVAL
1752
1753void
1754api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1755
1756SV *
1757has_stack (Coro::State coro)
1758 PROTOTYPE: $
1759 CODE:
1760 RETVAL = boolSV (!!coro->cctx);
1761 OUTPUT:
1762 RETVAL
1763
1764int
1765is_traced (Coro::State coro)
1766 PROTOTYPE: $
1767 CODE:
1768 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1769 OUTPUT:
1770 RETVAL
1771
1772IV
1773rss (Coro::State coro)
1774 PROTOTYPE: $
1775 ALIAS:
1776 usecount = 1
1777 CODE:
1778 switch (ix)
1779 {
1780 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1781 case 1: RETVAL = coro->usecount; break;
1782 }
1783 OUTPUT:
1784 RETVAL
1785
1786
1312MODULE = Coro::State PACKAGE = Coro 1787MODULE = Coro::State PACKAGE = Coro
1313 1788
1314BOOT: 1789BOOT:
1315{ 1790{
1316 int i; 1791 int i;
1317 1792
1793 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1794 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1795 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1796
1797 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1798 SvREADONLY_on (coro_current);
1799
1318 coro_stash = gv_stashpv ("Coro", TRUE); 1800 coro_stash = gv_stashpv ("Coro", TRUE);
1319 1801
1320 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1802 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1321 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1803 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1322 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1804 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1323 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1805 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1324 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1806 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1325 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1807 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1326 1808
1327 coro_current = get_sv ("Coro::current", FALSE);
1328 SvREADONLY_on (coro_current);
1329
1330 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1809 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1331 coro_ready[i] = newAV (); 1810 coro_ready[i] = newAV ();
1332 1811
1333 { 1812 {
1334 SV *sv = perl_get_sv("Coro::API", 1); 1813 SV *sv = perl_get_sv ("Coro::API", TRUE);
1814 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1335 1815
1336 coroapi.schedule = api_schedule; 1816 coroapi.schedule = api_schedule;
1337 coroapi.save = api_save;
1338 coroapi.cede = api_cede; 1817 coroapi.cede = api_cede;
1339 coroapi.cede_notself = api_cede_notself; 1818 coroapi.cede_notself = api_cede_notself;
1340 coroapi.ready = api_ready; 1819 coroapi.ready = api_ready;
1341 coroapi.is_ready = api_is_ready; 1820 coroapi.is_ready = api_is_ready;
1342 coroapi.nready = &coro_nready; 1821 coroapi.nready = &coro_nready;
… …
1383 CODE: 1862 CODE:
1384 RETVAL = boolSV (api_ready (self)); 1863 RETVAL = boolSV (api_ready (self));
1385 OUTPUT: 1864 OUTPUT:
1386 RETVAL 1865 RETVAL
1387 1866
1388SV *
1389is_ready (SV *self)
1390 PROTOTYPE: $
1391 CODE:
1392 RETVAL = boolSV (api_is_ready (self));
1393 OUTPUT:
1394 RETVAL
1395
1396int 1867int
1397nready (...) 1868nready (...)
1398 PROTOTYPE: 1869 PROTOTYPE:
1399 CODE: 1870 CODE:
1400 RETVAL = coro_nready; 1871 RETVAL = coro_nready;
1401 OUTPUT: 1872 OUTPUT:
1402 RETVAL 1873 RETVAL
1403 1874
1875void
1876throw (Coro::State self, SV *throw = &PL_sv_undef)
1877 PROTOTYPE: $;$
1878 CODE:
1879 SvREFCNT_dec (self->throw);
1880 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1881
1882# for async_pool speedup
1883void
1884_pool_1 (SV *cb)
1885 CODE:
1886{
1887 struct coro *coro = SvSTATE (coro_current);
1888 HV *hv = (HV *)SvRV (coro_current);
1889 AV *defav = GvAV (PL_defgv);
1890 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1891 AV *invoke_av;
1892 int i, len;
1893
1894 if (!invoke)
1895 croak ("\3async_pool terminate\2\n");
1896
1897 SvREFCNT_dec (coro->saved_deffh);
1898 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1899
1900 hv_store (hv, "desc", sizeof ("desc") - 1,
1901 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1902
1903 invoke_av = (AV *)SvRV (invoke);
1904 len = av_len (invoke_av);
1905
1906 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1907
1908 if (len > 0)
1909 {
1910 av_fill (defav, len - 1);
1911 for (i = 0; i < len; ++i)
1912 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1913 }
1914
1915 SvREFCNT_dec (invoke);
1916}
1917
1918void
1919_pool_2 (SV *cb)
1920 CODE:
1921{
1922 struct coro *coro = SvSTATE (coro_current);
1923
1924 sv_setsv (cb, &PL_sv_undef);
1925
1926 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1927 coro->saved_deffh = 0;
1928
1929 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1930 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1931 croak ("\3async_pool terminate\2\n");
1932
1933 av_clear (GvAV (PL_defgv));
1934 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1935 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1936
1937 coro->prio = 0;
1938
1939 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1940 api_trace (coro_current, 0);
1941
1942 av_push (av_async_pool, newSVsv (coro_current));
1943}
1944
1945
1404MODULE = Coro::State PACKAGE = Coro::AIO 1946MODULE = Coro::State PACKAGE = Coro::AIO
1405 1947
1406SV * 1948SV *
1407_get_state () 1949_get_state ()
1408 CODE: 1950 CODE:

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