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 1.146 by root, Sat Mar 17 19:51:57 2007 UTC vs.
Revision 1.226 by root, Fri Apr 4 20:07:35 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
8 9
9#include "patchlevel.h" 10#include "patchlevel.h"
10 11
11#include <stdio.h> 12#include <stdio.h>
12#include <errno.h> 13#include <errno.h>
13#include <assert.h> 14#include <assert.h>
15#include <inttypes.h> /* portable stdint.h */
14 16
15#ifdef HAVE_MMAP 17#ifdef HAVE_MMAP
16# include <unistd.h> 18# include <unistd.h>
17# include <sys/mman.h> 19# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 20# ifndef MAP_ANONYMOUS
… …
70# ifndef IS_PADCONST 72# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 73# define IS_PADCONST(v) 0
72# endif 74# endif
73#endif 75#endif
74 76
77/* 5.8.8 */
78#ifndef GV_NOTQUAL
79# define GV_NOTQUAL 0
80#endif
81#ifndef newSV
82# define newSV(l) NEWSV(0,l)
83#endif
84
85/* 5.11 */
86#ifndef CxHASARGS
87# define CxHASARGS(cx) (cx)->blk_sub.hasargs
88#endif
89
75/* 5.8.7 */ 90/* 5.8.7 */
76#ifndef SvRV_set 91#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 92# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 93#endif
79 94
… …
88/* prefer perl internal functions over our own? */ 103/* prefer perl internal functions over our own? */
89#ifndef CORO_PREFER_PERL_FUNCTIONS 104#ifndef CORO_PREFER_PERL_FUNCTIONS
90# define CORO_PREFER_PERL_FUNCTIONS 0 105# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 106#endif
92 107
93/* The next macro should declare a variable stacklevel that contains and approximation 108/* 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 109 * portable way as possible. */
95 * and should be unique. */
96#define dSTACKLEVEL int stacklevel 110#define dSTACKLEVEL volatile char stacklevel
97#define STACKLEVEL ((void *)&stacklevel) 111#define STACKLEVEL ((void *)&stacklevel)
98 112
99#define IN_DESTRUCT (PL_main_cv == Nullcv) 113#define IN_DESTRUCT (PL_main_cv == Nullcv)
100 114
101#if __GNUC__ >= 3 115#if __GNUC__ >= 3
102# define attribute(x) __attribute__(x) 116# define attribute(x) __attribute__(x)
103# define BARRIER __asm__ __volatile__ ("" : : : "memory") 117# define BARRIER __asm__ __volatile__ ("" : : : "memory")
118# define expect(expr,value) __builtin_expect ((expr),(value))
104#else 119#else
105# define attribute(x) 120# define attribute(x)
106# define BARRIER 121# define BARRIER
122# define expect(expr,value) (expr)
107#endif 123#endif
124
125#define expect_false(expr) expect ((expr) != 0, 0)
126#define expect_true(expr) expect ((expr) != 0, 1)
108 127
109#define NOINLINE attribute ((noinline)) 128#define NOINLINE attribute ((noinline))
110 129
111#include "CoroAPI.h" 130#include "CoroAPI.h"
112 131
… …
129}; 148};
130 149
131static size_t coro_stacksize = CORO_STACKSIZE; 150static size_t coro_stacksize = CORO_STACKSIZE;
132static struct CoroAPI coroapi; 151static struct CoroAPI coroapi;
133static AV *main_mainstack; /* used to differentiate between $main and others */ 152static AV *main_mainstack; /* used to differentiate between $main and others */
153static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 154static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 155static volatile SV *coro_mortal; /* will be freed after next transfer */
156
157static GV *irsgv; /* $/ */
158static GV *stdoutgv; /* *STDOUT */
159static SV *rv_diehook;
160static SV *rv_warnhook;
161static HV *hv_sig; /* %SIG */
162
163/* async_pool helper stuff */
164static SV *sv_pool_rss;
165static SV *sv_pool_size;
166static AV *av_async_pool;
136 167
137static struct coro_cctx *cctx_first; 168static struct coro_cctx *cctx_first;
138static int cctx_count, cctx_idle; 169static int cctx_count, cctx_idle;
170
171enum {
172 CC_MAPPED = 0x01,
173 CC_NOREUSE = 0x02, /* throw this away after tracing */
174 CC_TRACE = 0x04,
175 CC_TRACE_SUB = 0x08, /* trace sub calls */
176 CC_TRACE_LINE = 0x10, /* trace each statement */
177 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
178};
139 179
140/* this is a structure representing a c-level coroutine */ 180/* this is a structure representing a c-level coroutine */
141typedef struct coro_cctx { 181typedef struct coro_cctx {
142 struct coro_cctx *next; 182 struct coro_cctx *next;
143 183
… …
152 coro_context cctx; 192 coro_context cctx;
153 193
154#if CORO_USE_VALGRIND 194#if CORO_USE_VALGRIND
155 int valgrind_id; 195 int valgrind_id;
156#endif 196#endif
157 char inuse, mapped; 197 unsigned char flags;
158} coro_cctx; 198} coro_cctx;
159 199
160enum { 200enum {
161 CF_RUNNING = 0x0001, /* coroutine is running */ 201 CF_RUNNING = 0x0001, /* coroutine is running */
162 CF_READY = 0x0002, /* coroutine is ready */ 202 CF_READY = 0x0002, /* coroutine is ready */
163 CF_NEW = 0x0004, /* has never been switched to */ 203 CF_NEW = 0x0004, /* has never been switched to */
164 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 204 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
165}; 205};
166 206
207/* the structure where most of the perl state is stored, overlaid on the cxstack */
208typedef struct {
209 SV *defsv;
210 AV *defav;
211 SV *errsv;
212 SV *irsgv;
213#define VAR(name,type) type name;
214# include "state.h"
215#undef VAR
216} perl_slots;
217
218#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
219
167/* this is a structure representing a perl-level coroutine */ 220/* this is a structure representing a perl-level coroutine */
168struct coro { 221struct coro {
169 /* the c coroutine allocated to this perl coroutine, if any */ 222 /* the c coroutine allocated to this perl coroutine, if any */
170 coro_cctx *cctx; 223 coro_cctx *cctx;
171 224
225 /* process data */
226 AV *mainstack;
227 perl_slots *slot; /* basically the saved sp */
228
172 /* data associated with this coroutine (initial args) */ 229 AV *args; /* data associated with this coroutine (initial args) */
173 AV *args; 230 int refcnt; /* coroutines are refcounted, yes */
174 int refcnt;
175 int save; /* CORO_SAVE flags */
176 int flags; /* CF_ flags */ 231 int flags; /* CF_ flags */
232 HV *hv; /* the perl hash associated with this coro, if any */
177 233
178 /* optionally saved, might be zero */ 234 /* statistics */
179 AV *defav; /* @_ */ 235 int usecount; /* number of transfers to this coro */
180 SV *defsv; /* $_ */
181 SV *errsv; /* $@ */
182 SV *irssv; /* $/ */
183 SV *irssv_sv; /* real $/ cache */
184
185#define VAR(name,type) type name;
186# include "state.h"
187#undef VAR
188 236
189 /* coro process data */ 237 /* coro process data */
190 int prio; 238 int prio;
239 SV *throw; /* exception to be thrown */
240
241 /* async_pool */
242 SV *saved_deffh;
243
244 /* linked list */
245 struct coro *next, *prev;
191}; 246};
192 247
193typedef struct coro *Coro__State; 248typedef struct coro *Coro__State;
194typedef struct coro *Coro__State_or_hashref; 249typedef struct coro *Coro__State_or_hashref;
195 250
… …
204 259
205/* for Coro.pm */ 260/* for Coro.pm */
206static SV *coro_current; 261static SV *coro_current;
207static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 262static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
208static int coro_nready; 263static int coro_nready;
264static struct coro *coro_first;
209 265
210/** lowlevel stuff **********************************************************/ 266/** lowlevel stuff **********************************************************/
267
268static SV *
269coro_get_sv (pTHX_ const char *name, int create)
270{
271#if PERL_VERSION_ATLEAST (5,9,0)
272 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
273 get_sv (name, create);
274#endif
275 return get_sv (name, create);
276}
277
278static AV *
279coro_get_av (pTHX_ const char *name, int create)
280{
281#if PERL_VERSION_ATLEAST (5,9,0)
282 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
283 get_av (name, create);
284#endif
285 return get_av (name, create);
286}
287
288static HV *
289coro_get_hv (pTHX_ const char *name, int create)
290{
291#if PERL_VERSION_ATLEAST (5,9,0)
292 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
293 get_hv (name, create);
294#endif
295 return get_hv (name, create);
296}
211 297
212static AV * 298static AV *
213coro_clone_padlist (pTHX_ CV *cv) 299coro_clone_padlist (pTHX_ CV *cv)
214{ 300{
215 AV *padlist = CvPADLIST (cv); 301 AV *padlist = CvPADLIST (cv);
… …
263 349
264 /* casting is fun. */ 350 /* casting is fun. */
265 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 351 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
266 free_padlist (aTHX_ padlist); 352 free_padlist (aTHX_ padlist);
267 353
268 SvREFCNT_dec (av);
269
270 return 0; 354 return 0;
271} 355}
272 356
273#define PERL_MAGIC_coro PERL_MAGIC_ext 357#define CORO_MAGIC_type_cv PERL_MAGIC_ext
358#define CORO_MAGIC_type_state PERL_MAGIC_ext
274 359
275static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 360static MGVTBL coro_cv_vtbl = {
361 0, 0, 0, 0,
362 coro_cv_free
363};
276 364
277#define CORO_MAGIC(cv) \ 365#define CORO_MAGIC(sv,type) \
278 SvMAGIC (cv) \ 366 SvMAGIC (sv) \
279 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 367 ? SvMAGIC (sv)->mg_type == type \
280 ? SvMAGIC (cv) \ 368 ? SvMAGIC (sv) \
281 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 369 : mg_find (sv, type) \
282 : 0 370 : 0
371
372#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
373#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
374
375static struct coro *
376SvSTATE_ (pTHX_ SV *coro)
377{
378 HV *stash;
379 MAGIC *mg;
380
381 if (SvROK (coro))
382 coro = SvRV (coro);
383
384 if (expect_false (SvTYPE (coro) != SVt_PVHV))
385 croak ("Coro::State object required");
386
387 stash = SvSTASH (coro);
388 if (expect_false (stash != coro_stash && stash != coro_state_stash))
389 {
390 /* very slow, but rare, check */
391 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
392 croak ("Coro::State object required");
393 }
394
395 mg = CORO_MAGIC_state (coro);
396 return (struct coro *)mg->mg_ptr;
397}
398
399#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
283 400
284/* the next two functions merely cache the padlists */ 401/* the next two functions merely cache the padlists */
285static void 402static void
286get_padlist (pTHX_ CV *cv) 403get_padlist (pTHX_ CV *cv)
287{ 404{
288 MAGIC *mg = CORO_MAGIC (cv); 405 MAGIC *mg = CORO_MAGIC_cv (cv);
289 AV *av; 406 AV *av;
290 407
291 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 408 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
292 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 409 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
293 else 410 else
294 { 411 {
295#if CORO_PREFER_PERL_FUNCTIONS 412#if CORO_PREFER_PERL_FUNCTIONS
296 /* this is probably cleaner, but also slower? */ 413 /* this is probably cleaner, but also slower? */
… …
305} 422}
306 423
307static void 424static void
308put_padlist (pTHX_ CV *cv) 425put_padlist (pTHX_ CV *cv)
309{ 426{
310 MAGIC *mg = CORO_MAGIC (cv); 427 MAGIC *mg = CORO_MAGIC_cv (cv);
311 AV *av; 428 AV *av;
312 429
313 if (!mg) 430 if (expect_false (!mg))
314 { 431 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
315 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
316 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
317 mg->mg_virtual = &vtbl_coro;
318 mg->mg_obj = (SV *)newAV ();
319 }
320 432
321 av = (AV *)mg->mg_obj; 433 av = (AV *)mg->mg_obj;
322 434
323 if (AvFILLp (av) >= AvMAX (av)) 435 if (expect_false (AvFILLp (av) >= AvMAX (av)))
324 av_extend (av, AvMAX (av) + 1); 436 av_extend (av, AvMAX (av) + 1);
325 437
326 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 438 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
327} 439}
328 440
329/** load & save, init *******************************************************/ 441/** load & save, init *******************************************************/
330
331#define SB do {
332#define SE } while (0)
333
334#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
335 442
336static void 443static void
337load_perl (pTHX_ Coro__State c) 444load_perl (pTHX_ Coro__State c)
338{ 445{
446 perl_slots *slot = c->slot;
447 c->slot = 0;
448
449 PL_mainstack = c->mainstack;
450
451 GvSV (PL_defgv) = slot->defsv;
452 GvAV (PL_defgv) = slot->defav;
453 GvSV (PL_errgv) = slot->errsv;
454 GvSV (irsgv) = slot->irsgv;
455
339#define VAR(name,type) PL_ ## name = c->name; 456 #define VAR(name,type) PL_ ## name = slot->name;
340# include "state.h" 457 # include "state.h"
341#undef VAR 458 #undef VAR
342
343 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
344 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
345 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
346 if (c->irssv)
347 {
348 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
349 SvREFCNT_dec (c->irssv);
350 else
351 {
352 REPLACE_SV (PL_rs, c->irssv);
353 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
354 sv_setsv (c->irssv_sv, PL_rs);
355 }
356 }
357 459
358 { 460 {
359 dSP; 461 dSP;
462
360 CV *cv; 463 CV *cv;
361 464
362 /* now do the ugly restore mess */ 465 /* now do the ugly restore mess */
363 while ((cv = (CV *)POPs)) 466 while (expect_true (cv = (CV *)POPs))
364 { 467 {
365 put_padlist (aTHX_ cv); /* mark this padlist as available */ 468 put_padlist (aTHX_ cv); /* mark this padlist as available */
366 CvDEPTH (cv) = PTR2IV (POPs); 469 CvDEPTH (cv) = PTR2IV (POPs);
367 CvPADLIST (cv) = (AV *)POPs; 470 CvPADLIST (cv) = (AV *)POPs;
368 } 471 }
369 472
370 PUTBACK; 473 PUTBACK;
371 } 474 }
372 assert (!PL_comppad || AvARRAY (PL_comppad));//D
373} 475}
374 476
375static void 477static void
376save_perl (pTHX_ Coro__State c) 478save_perl (pTHX_ Coro__State c)
377{ 479{
378 assert (!PL_comppad || AvARRAY (PL_comppad));//D
379 { 480 {
380 dSP; 481 dSP;
381 I32 cxix = cxstack_ix; 482 I32 cxix = cxstack_ix;
382 PERL_CONTEXT *ccstk = cxstack; 483 PERL_CONTEXT *ccstk = cxstack;
383 PERL_SI *top_si = PL_curstackinfo; 484 PERL_SI *top_si = PL_curstackinfo;
… …
385 /* 486 /*
386 * the worst thing you can imagine happens first - we have to save 487 * the worst thing you can imagine happens first - we have to save
387 * (and reinitialize) all cv's in the whole callchain :( 488 * (and reinitialize) all cv's in the whole callchain :(
388 */ 489 */
389 490
390 EXTEND (SP, 3 + 1);
391 PUSHs (Nullsv); 491 XPUSHs (Nullsv);
392 /* this loop was inspired by pp_caller */ 492 /* this loop was inspired by pp_caller */
393 for (;;) 493 for (;;)
394 { 494 {
395 while (cxix >= 0) 495 while (expect_true (cxix >= 0))
396 { 496 {
397 PERL_CONTEXT *cx = &ccstk[cxix--]; 497 PERL_CONTEXT *cx = &ccstk[cxix--];
398 498
399 if (CxTYPE (cx) == CXt_SUB) 499 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
400 { 500 {
401 CV *cv = cx->blk_sub.cv; 501 CV *cv = cx->blk_sub.cv;
402 502
403 if (CvDEPTH (cv)) 503 if (expect_true (CvDEPTH (cv)))
404 { 504 {
405 EXTEND (SP, 3); 505 EXTEND (SP, 3);
406 PUSHs ((SV *)CvPADLIST (cv)); 506 PUSHs ((SV *)CvPADLIST (cv));
407 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 507 PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
408 PUSHs ((SV *)cv); 508 PUSHs ((SV *)cv);
… …
411 get_padlist (aTHX_ cv); 511 get_padlist (aTHX_ cv);
412 } 512 }
413 } 513 }
414 } 514 }
415 515
416 if (top_si->si_type == PERLSI_MAIN) 516 if (expect_true (top_si->si_type == PERLSI_MAIN))
417 break; 517 break;
418 518
419 top_si = top_si->si_prev; 519 top_si = top_si->si_prev;
420 ccstk = top_si->si_cxstack; 520 ccstk = top_si->si_cxstack;
421 cxix = top_si->si_cxix; 521 cxix = top_si->si_cxix;
422 } 522 }
423 523
424 PUTBACK; 524 PUTBACK;
425 } 525 }
426 526
427 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 527 /* allocate some space on the context stack for our purposes */
428 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 528 /* we manually unroll here, as usually 2 slots is enough */
429 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 529 if (SLOT_COUNT >= 1) CXINC;
430 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 530 if (SLOT_COUNT >= 2) CXINC;
531 if (SLOT_COUNT >= 3) CXINC;
532 {
533 int i;
534 for (i = 3; i < SLOT_COUNT; ++i)
535 CXINC;
536 }
537 cxstack_ix -= SLOT_COUNT; /* undo allocation */
431 538
539 c->mainstack = PL_mainstack;
540
541 {
542 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
543
544 slot->defav = GvAV (PL_defgv);
545 slot->defsv = DEFSV;
546 slot->errsv = ERRSV;
547 slot->irsgv = GvSV (irsgv);
548
432#define VAR(name,type)c->name = PL_ ## name; 549 #define VAR(name,type) slot->name = PL_ ## name;
433# include "state.h" 550 # include "state.h"
434#undef VAR 551 #undef VAR
552 }
435} 553}
436 554
437/* 555/*
438 * allocate various perl stacks. This is an exact copy 556 * allocate various perl stacks. This is an exact copy
439 * of perl.c:init_stacks, except that it uses less memory 557 * of perl.c:init_stacks, except that it uses less memory
… …
444# define coro_init_stacks init_stacks 562# define coro_init_stacks init_stacks
445#else 563#else
446static void 564static void
447coro_init_stacks (pTHX) 565coro_init_stacks (pTHX)
448{ 566{
449 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 567 PL_curstackinfo = new_stackinfo(32, 8);
450 PL_curstackinfo->si_type = PERLSI_MAIN; 568 PL_curstackinfo->si_type = PERLSI_MAIN;
451 PL_curstack = PL_curstackinfo->si_stack; 569 PL_curstack = PL_curstackinfo->si_stack;
452 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 570 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
453 571
454 PL_stack_base = AvARRAY(PL_curstack); 572 PL_stack_base = AvARRAY(PL_curstack);
455 PL_stack_sp = PL_stack_base; 573 PL_stack_sp = PL_stack_base;
456 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 574 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
457 575
458 New(50,PL_tmps_stack,128,SV*); 576 New(50,PL_tmps_stack,32,SV*);
459 PL_tmps_floor = -1; 577 PL_tmps_floor = -1;
460 PL_tmps_ix = -1; 578 PL_tmps_ix = -1;
461 PL_tmps_max = 128; 579 PL_tmps_max = 32;
462 580
463 New(54,PL_markstack,32,I32); 581 New(54,PL_markstack,16,I32);
464 PL_markstack_ptr = PL_markstack; 582 PL_markstack_ptr = PL_markstack;
465 PL_markstack_max = PL_markstack + 32; 583 PL_markstack_max = PL_markstack + 16;
466 584
467#ifdef SET_MARK_OFFSET 585#ifdef SET_MARK_OFFSET
468 SET_MARK_OFFSET; 586 SET_MARK_OFFSET;
469#endif 587#endif
470 588
471 New(54,PL_scopestack,32,I32); 589 New(54,PL_scopestack,8,I32);
472 PL_scopestack_ix = 0; 590 PL_scopestack_ix = 0;
473 PL_scopestack_max = 32; 591 PL_scopestack_max = 8;
474 592
475 New(54,PL_savestack,64,ANY); 593 New(54,PL_savestack,24,ANY);
476 PL_savestack_ix = 0; 594 PL_savestack_ix = 0;
477 PL_savestack_max = 64; 595 PL_savestack_max = 24;
478 596
479#if !PERL_VERSION_ATLEAST (5,9,0) 597#if !PERL_VERSION_ATLEAST (5,9,0)
480 New(54,PL_retstack,16,OP*); 598 New(54,PL_retstack,4,OP*);
481 PL_retstack_ix = 0; 599 PL_retstack_ix = 0;
482 PL_retstack_max = 16; 600 PL_retstack_max = 4;
483#endif 601#endif
484} 602}
485#endif 603#endif
486 604
487/* 605/*
488 * destroy the stacks, the callchain etc... 606 * destroy the stacks, the callchain etc...
489 */ 607 */
490static void 608static void
491coro_destroy_stacks (pTHX) 609coro_destroy_stacks (pTHX)
492{ 610{
493 if (!IN_DESTRUCT)
494 {
495 /* restore all saved variables and stuff */
496 LEAVE_SCOPE (0);
497 assert (PL_tmps_floor == -1);
498
499 /* free all temporaries */
500 FREETMPS;
501 assert (PL_tmps_ix == -1);
502
503 /* unwind all extra stacks */
504 POPSTACK_TO (PL_mainstack);
505
506 /* unwind main stack */
507 dounwind (-1);
508 }
509
510 while (PL_curstackinfo->si_next) 611 while (PL_curstackinfo->si_next)
511 PL_curstackinfo = PL_curstackinfo->si_next; 612 PL_curstackinfo = PL_curstackinfo->si_next;
512 613
513 while (PL_curstackinfo) 614 while (PL_curstackinfo)
514 { 615 {
… …
529#if !PERL_VERSION_ATLEAST (5,9,0) 630#if !PERL_VERSION_ATLEAST (5,9,0)
530 Safefree (PL_retstack); 631 Safefree (PL_retstack);
531#endif 632#endif
532} 633}
533 634
635static size_t
636coro_rss (pTHX_ struct coro *coro)
637{
638 size_t rss = sizeof (*coro);
639
640 if (coro->mainstack)
641 {
642 perl_slots tmp_slot;
643 perl_slots *slot;
644
645 if (coro->flags & CF_RUNNING)
646 {
647 slot = &tmp_slot;
648
649 #define VAR(name,type) slot->name = PL_ ## name;
650 # include "state.h"
651 #undef VAR
652 }
653 else
654 slot = coro->slot;
655
656 rss += sizeof (slot->curstackinfo);
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY);
663
664#if !PERL_VERSION_ATLEAST (5,9,0)
665 rss += slot->retstack_max * sizeof (OP *);
666#endif
667 }
668
669 return rss;
670}
671
534/** coroutine stack handling ************************************************/ 672/** coroutine stack handling ************************************************/
535 673
674static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
675static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
676
677/*
678 * This overrides the default magic get method of %SIG elements.
679 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
680 * and instead of tryign to save and restore the hash elements, we just provide
681 * readback here.
682 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
683 * not expecting this to actually change the hook. This is a potential problem
684 * when a schedule happens then, but we ignore this.
685 */
686static int
687coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
688{
689 const char *s = MgPV_nolen_const (mg);
690
691 if (*s == '_')
692 {
693 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;
694 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0;
695 }
696
697 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
698}
699
700static int
701coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
702{
703 const char *s = MgPV_nolen_const (mg);
704
705 if (*s == '_')
706 {
707 SV **svp = 0;
708
709 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
710 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
711
712 if (svp)
713 {
714 SV *old = *svp;
715 *svp = newSVsv (sv);
716 SvREFCNT_dec (old);
717 return;
718 }
719 }
720
721 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
722}
723
536static void 724static void
537setup_coro (pTHX_ struct coro *coro) 725coro_setup (pTHX_ struct coro *coro)
538{ 726{
539 /* 727 /*
540 * emulate part of the perl startup here. 728 * emulate part of the perl startup here.
541 */ 729 */
542 coro_init_stacks (aTHX); 730 coro_init_stacks (aTHX);
543 731
732 PL_runops = RUNOPS_DEFAULT;
544 PL_curcop = &PL_compiling; 733 PL_curcop = &PL_compiling;
545 PL_in_eval = EVAL_NULL; 734 PL_in_eval = EVAL_NULL;
546 PL_comppad = 0; 735 PL_comppad = 0;
547 PL_curpm = 0; 736 PL_curpm = 0;
737 PL_curpad = 0;
548 PL_localizing = 0; 738 PL_localizing = 0;
549 PL_dirty = 0; 739 PL_dirty = 0;
550 PL_restartop = 0; 740 PL_restartop = 0;
551 741
742 /* recreate the die/warn hooks */
743 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
744 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
745
746 GvSV (PL_defgv) = newSV (0);
747 GvAV (PL_defgv) = coro->args; coro->args = 0;
748 GvSV (PL_errgv) = newSV (0);
749 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
750 PL_rs = newSVsv (GvSV (irsgv));
751 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
752
552 { 753 {
553 dSP; 754 dSP;
554 LOGOP myop; 755 LOGOP myop;
555 756
556 SvREFCNT_dec (GvAV (PL_defgv));
557 GvAV (PL_defgv) = coro->args; coro->args = 0;
558
559 Zero (&myop, 1, LOGOP); 757 Zero (&myop, 1, LOGOP);
560 myop.op_next = Nullop; 758 myop.op_next = Nullop;
561 myop.op_flags = OPf_WANT_VOID; 759 myop.op_flags = OPf_WANT_VOID;
562 760
563 PUSHMARK (SP); 761 PUSHMARK (SP);
564 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 762 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
565 PUTBACK; 763 PUTBACK;
566 PL_op = (OP *)&myop; 764 PL_op = (OP *)&myop;
567 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 765 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
568 SPAGAIN; 766 SPAGAIN;
569 } 767 }
570 768
571 ENTER; /* necessary e.g. for dounwind */ 769 /* this newly created coroutine might be run on an existing cctx which most
770 * likely was suspended in set_stacklevel, called from entersub.
771 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
772 * so we ENTER here for symmetry
773 */
774 ENTER;
775}
776
777static void
778coro_destroy (pTHX_ struct coro *coro)
779{
780 if (!IN_DESTRUCT)
781 {
782 /* restore all saved variables and stuff */
783 LEAVE_SCOPE (0);
784 assert (PL_tmps_floor == -1);
785
786 /* free all temporaries */
787 FREETMPS;
788 assert (PL_tmps_ix == -1);
789
790 /* unwind all extra stacks */
791 POPSTACK_TO (PL_mainstack);
792
793 /* unwind main stack */
794 dounwind (-1);
795 }
796
797 SvREFCNT_dec (GvSV (PL_defgv));
798 SvREFCNT_dec (GvAV (PL_defgv));
799 SvREFCNT_dec (GvSV (PL_errgv));
800 SvREFCNT_dec (PL_defoutgv);
801 SvREFCNT_dec (PL_rs);
802 SvREFCNT_dec (GvSV (irsgv));
803
804 SvREFCNT_dec (PL_diehook);
805 SvREFCNT_dec (PL_warnhook);
806
807 SvREFCNT_dec (coro->saved_deffh);
808 SvREFCNT_dec (coro->throw);
809
810 coro_destroy_stacks (aTHX);
572} 811}
573 812
574static void 813static void
575free_coro_mortal (pTHX) 814free_coro_mortal (pTHX)
576{ 815{
577 if (coro_mortal) 816 if (expect_true (coro_mortal))
578 { 817 {
579 SvREFCNT_dec (coro_mortal); 818 SvREFCNT_dec (coro_mortal);
580 coro_mortal = 0; 819 coro_mortal = 0;
581 } 820 }
582} 821}
583 822
823static int
824runops_trace (pTHX)
825{
826 COP *oldcop = 0;
827 int oldcxix = -2;
828 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
829 coro_cctx *cctx = coro->cctx;
830
831 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
832 {
833 PERL_ASYNC_CHECK ();
834
835 if (cctx->flags & CC_TRACE_ALL)
836 {
837 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
838 {
839 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
840 SV **bot, **top;
841 AV *av = newAV (); /* return values */
842 SV **cb;
843 dSP;
844
845 GV *gv = CvGV (cx->blk_sub.cv);
846 SV *fullname = sv_2mortal (newSV (0));
847 if (isGV (gv))
848 gv_efullname3 (fullname, gv, 0);
849
850 bot = PL_stack_base + cx->blk_oldsp + 1;
851 top = cx->blk_gimme == G_ARRAY ? SP + 1
852 : cx->blk_gimme == G_SCALAR ? bot + 1
853 : bot;
854
855 av_extend (av, top - bot);
856 while (bot < top)
857 av_push (av, SvREFCNT_inc (*bot++));
858
859 PL_runops = RUNOPS_DEFAULT;
860 ENTER;
861 SAVETMPS;
862 EXTEND (SP, 3);
863 PUSHMARK (SP);
864 PUSHs (&PL_sv_no);
865 PUSHs (fullname);
866 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
867 PUTBACK;
868 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
869 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
870 SPAGAIN;
871 FREETMPS;
872 LEAVE;
873 PL_runops = runops_trace;
874 }
875
876 if (oldcop != PL_curcop)
877 {
878 oldcop = PL_curcop;
879
880 if (PL_curcop != &PL_compiling)
881 {
882 SV **cb;
883
884 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
885 {
886 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
887
888 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
889 {
890 runops_proc_t old_runops = PL_runops;
891 dSP;
892 GV *gv = CvGV (cx->blk_sub.cv);
893 SV *fullname = sv_2mortal (newSV (0));
894
895 if (isGV (gv))
896 gv_efullname3 (fullname, gv, 0);
897
898 PL_runops = RUNOPS_DEFAULT;
899 ENTER;
900 SAVETMPS;
901 EXTEND (SP, 3);
902 PUSHMARK (SP);
903 PUSHs (&PL_sv_yes);
904 PUSHs (fullname);
905 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
906 PUTBACK;
907 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
908 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
909 SPAGAIN;
910 FREETMPS;
911 LEAVE;
912 PL_runops = runops_trace;
913 }
914
915 oldcxix = cxstack_ix;
916 }
917
918 if (cctx->flags & CC_TRACE_LINE)
919 {
920 dSP;
921
922 PL_runops = RUNOPS_DEFAULT;
923 ENTER;
924 SAVETMPS;
925 EXTEND (SP, 3);
926 PL_runops = RUNOPS_DEFAULT;
927 PUSHMARK (SP);
928 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
929 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
930 PUTBACK;
931 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
932 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
933 SPAGAIN;
934 FREETMPS;
935 LEAVE;
936 PL_runops = runops_trace;
937 }
938 }
939 }
940 }
941 }
942
943 TAINT_NOT;
944 return 0;
945}
946
584/* inject a fake call to Coro::State::_cctx_init into the execution */ 947/* inject a fake call to Coro::State::_cctx_init into the execution */
948/* _cctx_init should be careful, as it could be called at almost any time */
949/* during execution of a perl program */
585static void NOINLINE 950static void NOINLINE
586prepare_cctx (pTHX_ coro_cctx *cctx) 951cctx_prepare (pTHX_ coro_cctx *cctx)
587{ 952{
588 dSP; 953 dSP;
589 LOGOP myop; 954 LOGOP myop;
955
956 PL_top_env = &PL_start_env;
957
958 if (cctx->flags & CC_TRACE)
959 PL_runops = runops_trace;
590 960
591 Zero (&myop, 1, LOGOP); 961 Zero (&myop, 1, LOGOP);
592 myop.op_next = PL_op; 962 myop.op_next = PL_op;
593 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 963 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
594 964
… …
600 PL_op = (OP *)&myop; 970 PL_op = (OP *)&myop;
601 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 971 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
602 SPAGAIN; 972 SPAGAIN;
603} 973}
604 974
975/*
976 * this is a _very_ stripped down perl interpreter ;)
977 */
605static void 978static void
606coro_run (void *arg) 979cctx_run (void *arg)
607{ 980{
608 dTHX; 981 dTHX;
609 982
610 /* coro_run is the alternative tail of transfer(), so unlock here. */ 983 /* cctx_run is the alternative tail of transfer(), so unlock here. */
611 UNLOCK; 984 UNLOCK;
612 985
613 /* 986 /* we now skip the entersub that lead to transfer() */
614 * this is a _very_ stripped down perl interpreter ;) 987 PL_op = PL_op->op_next;
615 */
616 PL_top_env = &PL_start_env;
617 988
618 /* inject call to cctx_init */ 989 /* inject a fake subroutine call to cctx_init */
619 prepare_cctx (aTHX_ (coro_cctx *)arg); 990 cctx_prepare (aTHX_ (coro_cctx *)arg);
620 991
621 /* somebody will hit me for both perl_run and PL_restartop */ 992 /* somebody or something will hit me for both perl_run and PL_restartop */
622 PL_restartop = PL_op; 993 PL_restartop = PL_op;
623 perl_run (PL_curinterp); 994 perl_run (PL_curinterp);
624 995
625 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 996 /*
626 abort (); 997 * If perl-run returns we assume exit() was being called or the coro
998 * fell off the end, which seems to be the only valid (non-bug)
999 * reason for perl_run to return. We try to exit by jumping to the
1000 * bootstrap-time "top" top_env, as we cannot restore the "main"
1001 * coroutine as Coro has no such concept
1002 */
1003 PL_top_env = main_top_env;
1004 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
627} 1005}
628 1006
629static coro_cctx * 1007static coro_cctx *
630cctx_new () 1008cctx_new ()
631{ 1009{
… …
636 ++cctx_count; 1014 ++cctx_count;
637 1015
638 Newz (0, cctx, 1, coro_cctx); 1016 Newz (0, cctx, 1, coro_cctx);
639 1017
640#if HAVE_MMAP 1018#if HAVE_MMAP
641
642 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1019 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
643 /* mmap supposedly does allocate-on-write for us */ 1020 /* mmap supposedly does allocate-on-write for us */
644 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1021 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
645 1022
646 if (cctx->sptr != (void *)-1) 1023 if (cctx->sptr != (void *)-1)
… …
648# if CORO_STACKGUARD 1025# if CORO_STACKGUARD
649 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1026 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
650# endif 1027# endif
651 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1028 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
652 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1029 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
653 cctx->mapped = 1; 1030 cctx->flags |= CC_MAPPED;
654 } 1031 }
655 else 1032 else
656#endif 1033#endif
657 { 1034 {
658 cctx->ssize = coro_stacksize * (long)sizeof (long); 1035 cctx->ssize = coro_stacksize * (long)sizeof (long);
… …
667 stack_start = cctx->sptr; 1044 stack_start = cctx->sptr;
668 stack_size = cctx->ssize; 1045 stack_size = cctx->ssize;
669 } 1046 }
670 1047
671 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1048 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
672 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1049 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
673 1050
674 return cctx; 1051 return cctx;
675} 1052}
676 1053
677static void 1054static void
… …
685#if CORO_USE_VALGRIND 1062#if CORO_USE_VALGRIND
686 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1063 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
687#endif 1064#endif
688 1065
689#if HAVE_MMAP 1066#if HAVE_MMAP
690 if (cctx->mapped) 1067 if (cctx->flags & CC_MAPPED)
691 munmap (cctx->sptr, cctx->ssize); 1068 munmap (cctx->sptr, cctx->ssize);
692 else 1069 else
693#endif 1070#endif
694 Safefree (cctx->sptr); 1071 Safefree (cctx->sptr);
695 1072
696 Safefree (cctx); 1073 Safefree (cctx);
697} 1074}
698 1075
1076/* wether this cctx should be destructed */
1077#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1078
699static coro_cctx * 1079static coro_cctx *
700cctx_get (pTHX) 1080cctx_get (pTHX)
701{ 1081{
702 while (cctx_first) 1082 while (expect_true (cctx_first))
703 { 1083 {
704 coro_cctx *cctx = cctx_first; 1084 coro_cctx *cctx = cctx_first;
705 cctx_first = cctx->next; 1085 cctx_first = cctx->next;
706 --cctx_idle; 1086 --cctx_idle;
707 1087
708 if (cctx->ssize >= coro_stacksize) 1088 if (expect_true (!CCTX_EXPIRED (cctx)))
709 return cctx; 1089 return cctx;
710 1090
711 cctx_destroy (cctx); 1091 cctx_destroy (cctx);
712 } 1092 }
713 1093
714 PL_op = PL_op->op_next;
715 return cctx_new (); 1094 return cctx_new ();
716} 1095}
717 1096
718static void 1097static void
719cctx_put (coro_cctx *cctx) 1098cctx_put (coro_cctx *cctx)
720{ 1099{
721 /* free another cctx if overlimit */ 1100 /* free another cctx if overlimit */
722 if (cctx_idle >= MAX_IDLE_CCTX) 1101 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
723 { 1102 {
724 coro_cctx *first = cctx_first; 1103 coro_cctx *first = cctx_first;
725 cctx_first = first->next; 1104 cctx_first = first->next;
726 --cctx_idle; 1105 --cctx_idle;
727 1106
728 assert (!first->inuse);
729 cctx_destroy (first); 1107 cctx_destroy (first);
730 } 1108 }
731 1109
732 ++cctx_idle; 1110 ++cctx_idle;
733 cctx->next = cctx_first; 1111 cctx->next = cctx_first;
734 cctx_first = cctx; 1112 cctx_first = cctx;
735} 1113}
736 1114
737/** coroutine switching *****************************************************/ 1115/** coroutine switching *****************************************************/
738 1116
739/* never call directly, always through the coro_state_transfer global variable */ 1117static void
1118transfer_check (pTHX_ struct coro *prev, struct coro *next)
1119{
1120 if (expect_true (prev != next))
1121 {
1122 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1123 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1124
1125 if (expect_false (next->flags & CF_RUNNING))
1126 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1127
1128 if (expect_false (next->flags & CF_DESTROYED))
1129 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1130
1131 if (
1132#if PERL_VERSION_ATLEAST (5,9,0)
1133 expect_false (PL_parser && PL_parser->lex_state != LEX_NOTPARSING)
1134#else
1135 expect_false (PL_lex_state != LEX_NOTPARSING)
1136#endif
1137 )
1138 croak ("Coro::State::transfer called while parsing, but this is not supported");
1139 }
1140}
1141
1142/* always use the TRANSFER macro */
740static void NOINLINE 1143static void NOINLINE
741transfer (pTHX_ struct coro *prev, struct coro *next) 1144transfer (pTHX_ struct coro *prev, struct coro *next)
742{ 1145{
743 dSTACKLEVEL; 1146 dSTACKLEVEL;
1147 static volatile int has_throw;
744 1148
745 /* sometimes transfer is only called to set idle_sp */ 1149 /* sometimes transfer is only called to set idle_sp */
746 if (!next) 1150 if (expect_false (!next))
747 { 1151 {
748 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1152 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
749 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1153 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
750 } 1154 }
751 else if (prev != next) 1155 else if (expect_true (prev != next))
752 { 1156 {
753 coro_cctx *prev__cctx; 1157 coro_cctx *prev__cctx;
754 1158
755 if (prev->flags & CF_NEW) 1159 if (expect_false (prev->flags & CF_NEW))
756 { 1160 {
757 /* create a new empty context */ 1161 /* create a new empty context */
758 Newz (0, prev->cctx, 1, coro_cctx); 1162 Newz (0, prev->cctx, 1, coro_cctx);
759 prev->cctx->inuse = 1;
760 prev->flags &= ~CF_NEW; 1163 prev->flags &= ~CF_NEW;
761 prev->flags |= CF_RUNNING; 1164 prev->flags |= CF_RUNNING;
762 } 1165 }
763 1166
764 /*TODO: must not croak here */
765 if (!prev->flags & CF_RUNNING)
766 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
767
768 if (next->flags & CF_RUNNING)
769 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
770
771 if (next->flags & CF_DESTROYED)
772 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
773
774 prev->flags &= ~CF_RUNNING; 1167 prev->flags &= ~CF_RUNNING;
775 next->flags |= CF_RUNNING; 1168 next->flags |= CF_RUNNING;
776 1169
777 LOCK; 1170 LOCK;
778 1171
1172 /* first get rid of the old state */
1173 save_perl (aTHX_ prev);
1174
779 if (next->flags & CF_NEW) 1175 if (expect_false (next->flags & CF_NEW))
780 { 1176 {
781 /* need to start coroutine */ 1177 /* need to start coroutine */
782 next->flags &= ~CF_NEW; 1178 next->flags &= ~CF_NEW;
783 /* first get rid of the old state */
784 save_perl (aTHX_ prev);
785 /* setup coroutine call */ 1179 /* setup coroutine call */
786 setup_coro (aTHX_ next); 1180 coro_setup (aTHX_ next);
787 /* need a new stack */
788 assert (!next->cctx);
789 } 1181 }
790 else 1182 else
791 {
792 /* coroutine already started */
793 save_perl (aTHX_ prev);
794 load_perl (aTHX_ next); 1183 load_perl (aTHX_ next);
795 }
796 1184
797 prev__cctx = prev->cctx; 1185 prev__cctx = prev->cctx;
798 1186
799 /* possibly "free" the cctx */ 1187 /* possibly "free" the cctx */
800 if (prev__cctx->idle_sp == STACKLEVEL) 1188 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
801 { 1189 {
802 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1190 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
803 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1191 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
804 1192
805 prev->cctx = 0; 1193 prev->cctx = 0;
806 1194
1195 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1196 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1197 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1198 if (!next->cctx)
1199 next->cctx = cctx_get (aTHX);
1200
807 cctx_put (prev__cctx); 1201 cctx_put (prev__cctx);
808 prev__cctx->inuse = 0;
809 } 1202 }
810 1203
1204 ++next->usecount;
1205
811 if (!next->cctx) 1206 if (expect_true (!next->cctx))
812 {
813 next->cctx = cctx_get (aTHX); 1207 next->cctx = cctx_get (aTHX);
814 assert (!next->cctx->inuse);
815 next->cctx->inuse = 1;
816 }
817 1208
1209 has_throw = !!next->throw;
1210
818 if (prev__cctx != next->cctx) 1211 if (expect_false (prev__cctx != next->cctx))
819 { 1212 {
820 prev__cctx->top_env = PL_top_env; 1213 prev__cctx->top_env = PL_top_env;
821 PL_top_env = next->cctx->top_env; 1214 PL_top_env = next->cctx->top_env;
822 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1215 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
823 } 1216 }
824 1217
825 free_coro_mortal (aTHX); 1218 free_coro_mortal (aTHX);
826 UNLOCK; 1219 UNLOCK;
1220
1221 if (expect_false (has_throw))
1222 {
1223 struct coro *coro = SvSTATE (coro_current);
1224
1225 if (coro->throw)
1226 {
1227 SV *exception = coro->throw;
1228 coro->throw = 0;
1229 sv_setsv (ERRSV, exception);
1230 croak (0);
1231 }
1232 }
827 } 1233 }
828} 1234}
829 1235
830struct transfer_args 1236struct transfer_args
831{ 1237{
832 struct coro *prev, *next; 1238 struct coro *prev, *next;
833}; 1239};
834 1240
835#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1241#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
1242#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
836 1243
837/** high level stuff ********************************************************/ 1244/** high level stuff ********************************************************/
838 1245
839static int 1246static int
840coro_state_destroy (pTHX_ struct coro *coro) 1247coro_state_destroy (pTHX_ struct coro *coro)
… …
857 1264
858 if (coro->mainstack && coro->mainstack != main_mainstack) 1265 if (coro->mainstack && coro->mainstack != main_mainstack)
859 { 1266 {
860 struct coro temp; 1267 struct coro temp;
861 1268
862 assert (!(coro->flags & CF_RUNNING));
863
864 Zero (&temp, 1, struct coro);
865 temp.save = CORO_SAVE_ALL;
866
867 if (coro->flags & CF_RUNNING) 1269 if (coro->flags & CF_RUNNING)
868 croak ("FATAL: tried to destroy currently running coroutine"); 1270 croak ("FATAL: tried to destroy currently running coroutine");
869 1271
870 save_perl (aTHX_ &temp); 1272 save_perl (aTHX_ &temp);
871 load_perl (aTHX_ coro); 1273 load_perl (aTHX_ coro);
872 1274
873 coro_destroy_stacks (aTHX); 1275 coro_destroy (aTHX_ coro);
874 1276
875 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1277 load_perl (aTHX_ &temp);
876 1278
877 coro->mainstack = 0; 1279 coro->slot = 0;
878 } 1280 }
879 1281
880 cctx_destroy (coro->cctx); 1282 cctx_destroy (coro->cctx);
881 SvREFCNT_dec (coro->args); 1283 SvREFCNT_dec (coro->args);
882 1284
1285 if (coro->next) coro->next->prev = coro->prev;
1286 if (coro->prev) coro->prev->next = coro->next;
1287 if (coro == coro_first) coro_first = coro->next;
1288
883 return 1; 1289 return 1;
884} 1290}
885 1291
886static int 1292static int
887coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1293coro_state_free (pTHX_ SV *sv, MAGIC *mg)
888{ 1294{
889 struct coro *coro = (struct coro *)mg->mg_ptr; 1295 struct coro *coro = (struct coro *)mg->mg_ptr;
890 mg->mg_ptr = 0; 1296 mg->mg_ptr = 0;
1297
1298 coro->hv = 0;
891 1299
892 if (--coro->refcnt < 0) 1300 if (--coro->refcnt < 0)
893 { 1301 {
894 coro_state_destroy (aTHX_ coro); 1302 coro_state_destroy (aTHX_ coro);
895 Safefree (coro); 1303 Safefree (coro);
… …
917#else 1325#else
918# define MGf_DUP 0 1326# define MGf_DUP 0
919#endif 1327#endif
920}; 1328};
921 1329
922static struct coro *
923SvSTATE_ (pTHX_ SV *coro)
924{
925 HV *stash;
926 MAGIC *mg;
927
928 if (SvROK (coro))
929 coro = SvRV (coro);
930
931 stash = SvSTASH (coro);
932 if (stash != coro_stash && stash != coro_state_stash)
933 {
934 /* very slow, but rare, check */
935 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
936 croak ("Coro::State object required");
937 }
938
939 mg = CORO_MAGIC (coro);
940 return (struct coro *)mg->mg_ptr;
941}
942
943#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
944
945static void 1330static void
946prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1331prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
947{ 1332{
948 ta->prev = SvSTATE (prev_sv); 1333 ta->prev = SvSTATE (prev_sv);
949 ta->next = SvSTATE (next_sv); 1334 ta->next = SvSTATE (next_sv);
1335 TRANSFER_CHECK (*ta);
950} 1336}
951 1337
952static void 1338static void
953api_transfer (SV *prev_sv, SV *next_sv) 1339api_transfer (SV *prev_sv, SV *next_sv)
954{ 1340{
… …
957 1343
958 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1344 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
959 TRANSFER (ta); 1345 TRANSFER (ta);
960} 1346}
961 1347
962static int
963api_save (SV *coro_sv, int new_save)
964{
965 dTHX;
966 struct coro *coro = SvSTATE (coro_sv);
967 int old_save = coro->save;
968
969 if (new_save >= 0)
970 coro->save = new_save;
971
972 return old_save;
973}
974
975/** Coro ********************************************************************/ 1348/** Coro ********************************************************************/
976 1349
977static void 1350static void
978coro_enq (pTHX_ SV *coro_sv) 1351coro_enq (pTHX_ SV *coro_sv)
979{ 1352{
980 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1353 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
981} 1354}
982 1355
983static SV * 1356static SV *
984coro_deq (pTHX_ int min_prio) 1357coro_deq (pTHX)
985{ 1358{
986 int prio = PRIO_MAX - PRIO_MIN; 1359 int prio;
987 1360
988 min_prio -= PRIO_MIN;
989 if (min_prio < 0)
990 min_prio = 0;
991
992 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1361 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
993 if (AvFILLp (coro_ready [prio]) >= 0) 1362 if (AvFILLp (coro_ready [prio]) >= 0)
994 return av_shift (coro_ready [prio]); 1363 return av_shift (coro_ready [prio]);
995 1364
996 return 0; 1365 return 0;
997} 1366}
… …
1033 SV *prev_sv, *next_sv; 1402 SV *prev_sv, *next_sv;
1034 1403
1035 for (;;) 1404 for (;;)
1036 { 1405 {
1037 LOCK; 1406 LOCK;
1038 next_sv = coro_deq (aTHX_ PRIO_MIN); 1407 next_sv = coro_deq (aTHX);
1039 1408
1040 /* nothing to schedule: call the idle handler */ 1409 /* nothing to schedule: call the idle handler */
1041 if (!next_sv) 1410 if (expect_false (!next_sv))
1042 { 1411 {
1043 dSP; 1412 dSP;
1044 UNLOCK; 1413 UNLOCK;
1045 1414
1046 ENTER; 1415 ENTER;
1047 SAVETMPS; 1416 SAVETMPS;
1048 1417
1049 PUSHMARK (SP); 1418 PUSHMARK (SP);
1050 PUTBACK; 1419 PUTBACK;
1051 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1420 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1421 SPAGAIN;
1052 1422
1053 FREETMPS; 1423 FREETMPS;
1054 LEAVE; 1424 LEAVE;
1055 continue; 1425 continue;
1056 } 1426 }
1057 1427
1058 ta->next = SvSTATE (next_sv); 1428 ta->next = SvSTATE (next_sv);
1059 1429
1060 /* cannot transfer to destroyed coros, skip and look for next */ 1430 /* cannot transfer to destroyed coros, skip and look for next */
1061 if (ta->next->flags & CF_DESTROYED) 1431 if (expect_false (ta->next->flags & CF_DESTROYED))
1062 { 1432 {
1063 UNLOCK; 1433 UNLOCK;
1064 SvREFCNT_dec (next_sv); 1434 SvREFCNT_dec (next_sv);
1065 /* coro_nready is already taken care of by destroy */ 1435 /* coro_nready is already taken care of by destroy */
1066 continue; 1436 continue;
… …
1071 break; 1441 break;
1072 } 1442 }
1073 1443
1074 /* free this only after the transfer */ 1444 /* free this only after the transfer */
1075 prev_sv = SvRV (coro_current); 1445 prev_sv = SvRV (coro_current);
1076 SvRV_set (coro_current, next_sv);
1077 ta->prev = SvSTATE (prev_sv); 1446 ta->prev = SvSTATE (prev_sv);
1078 1447 TRANSFER_CHECK (*ta);
1079 assert (ta->next->flags & CF_READY); 1448 assert (ta->next->flags & CF_READY);
1080 ta->next->flags &= ~CF_READY; 1449 ta->next->flags &= ~CF_READY;
1450 SvRV_set (coro_current, next_sv);
1081 1451
1082 LOCK; 1452 LOCK;
1083 free_coro_mortal (aTHX); 1453 free_coro_mortal (aTHX);
1084 coro_mortal = prev_sv; 1454 coro_mortal = prev_sv;
1085 UNLOCK; 1455 UNLOCK;
… …
1122 dTHX; 1492 dTHX;
1123 struct transfer_args ta; 1493 struct transfer_args ta;
1124 1494
1125 prepare_cede (aTHX_ &ta); 1495 prepare_cede (aTHX_ &ta);
1126 1496
1127 if (ta.prev != ta.next) 1497 if (expect_true (ta.prev != ta.next))
1128 { 1498 {
1129 TRANSFER (ta); 1499 TRANSFER (ta);
1130 return 1; 1500 return 1;
1131 } 1501 }
1132 else 1502 else
… …
1146 } 1516 }
1147 else 1517 else
1148 return 0; 1518 return 0;
1149} 1519}
1150 1520
1521static void
1522api_trace (SV *coro_sv, int flags)
1523{
1524 dTHX;
1525 struct coro *coro = SvSTATE (coro_sv);
1526
1527 if (flags & CC_TRACE)
1528 {
1529 if (!coro->cctx)
1530 coro->cctx = cctx_new ();
1531 else if (!(coro->cctx->flags & CC_TRACE))
1532 croak ("cannot enable tracing on coroutine with custom stack");
1533
1534 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1535 }
1536 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1537 {
1538 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1539
1540 if (coro->flags & CF_RUNNING)
1541 PL_runops = RUNOPS_DEFAULT;
1542 else
1543 coro->slot->runops = RUNOPS_DEFAULT;
1544 }
1545}
1546
1151MODULE = Coro::State PACKAGE = Coro::State 1547MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1152 1548
1153PROTOTYPES: DISABLE 1549PROTOTYPES: DISABLE
1154 1550
1155BOOT: 1551BOOT:
1156{ 1552{
1157#ifdef USE_ITHREADS 1553#ifdef USE_ITHREADS
1158 MUTEX_INIT (&coro_mutex); 1554 MUTEX_INIT (&coro_mutex);
1159#endif 1555#endif
1160 BOOT_PAGESIZE; 1556 BOOT_PAGESIZE;
1161 1557
1558 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1559 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1560
1561 orig_sigelem_get = PL_vtbl_sigelem.svt_get;
1562 PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1563 orig_sigelem_set = PL_vtbl_sigelem.svt_set;
1564 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1565
1566 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1567 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1568 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1569
1162 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1570 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1163 1571
1572 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1573 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1164 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1574 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1165 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1166 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1167 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1168 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1575 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1169 1576
1170 main_mainstack = PL_mainstack; 1577 main_mainstack = PL_mainstack;
1578 main_top_env = PL_top_env;
1579
1580 while (main_top_env->je_prev)
1581 main_top_env = main_top_env->je_prev;
1171 1582
1172 coroapi.ver = CORO_API_VERSION; 1583 coroapi.ver = CORO_API_VERSION;
1584 coroapi.rev = CORO_API_REVISION;
1173 coroapi.transfer = api_transfer; 1585 coroapi.transfer = api_transfer;
1174 1586
1175 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1587 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1176} 1588}
1177 1589
1178SV * 1590SV *
1179new (char *klass, ...) 1591new (char *klass, ...)
1180 CODE: 1592 CODE:
1181{ 1593{
1182 struct coro *coro; 1594 struct coro *coro;
1595 MAGIC *mg;
1183 HV *hv; 1596 HV *hv;
1184 int i; 1597 int i;
1185 1598
1186 Newz (0, coro, 1, struct coro); 1599 Newz (0, coro, 1, struct coro);
1187 coro->args = newAV (); 1600 coro->args = newAV ();
1188 coro->save = CORO_SAVE_ALL;
1189 coro->flags = CF_NEW; 1601 coro->flags = CF_NEW;
1190 1602
1603 if (coro_first) coro_first->prev = coro;
1604 coro->next = coro_first;
1605 coro_first = coro;
1606
1191 hv = newHV (); 1607 coro->hv = hv = newHV ();
1192 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1608 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1609 mg->mg_flags |= MGf_DUP;
1193 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1610 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1194 1611
1612 av_extend (coro->args, items - 1);
1195 for (i = 1; i < items; i++) 1613 for (i = 1; i < items; i++)
1196 av_push (coro->args, newSVsv (ST (i))); 1614 av_push (coro->args, newSVsv (ST (i)));
1197} 1615}
1198 OUTPUT: 1616 OUTPUT:
1199 RETVAL 1617 RETVAL
1200 1618
1201int 1619# these not obviously related functions are all rolled into the same xs
1202save (SV *coro, int new_save = -1) 1620# function to increase chances that they all will call transfer with the same
1203 CODE: 1621# stack offset
1204 RETVAL = api_save (coro, new_save);
1205 OUTPUT:
1206 RETVAL
1207
1208void 1622void
1209_set_stacklevel (...) 1623_set_stacklevel (...)
1210 ALIAS: 1624 ALIAS:
1211 Coro::State::transfer = 1 1625 Coro::State::transfer = 1
1212 Coro::schedule = 2 1626 Coro::schedule = 2
… …
1214 Coro::cede_notself = 4 1628 Coro::cede_notself = 4
1215 CODE: 1629 CODE:
1216{ 1630{
1217 struct transfer_args ta; 1631 struct transfer_args ta;
1218 1632
1633 PUTBACK;
1219 switch (ix) 1634 switch (ix)
1220 { 1635 {
1221 case 0: 1636 case 0:
1222 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1637 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1223 ta.next = 0; 1638 ta.next = 0;
… …
1242 if (!prepare_cede_notself (aTHX_ &ta)) 1657 if (!prepare_cede_notself (aTHX_ &ta))
1243 XSRETURN_EMPTY; 1658 XSRETURN_EMPTY;
1244 1659
1245 break; 1660 break;
1246 } 1661 }
1662 SPAGAIN;
1247 1663
1248 BARRIER; 1664 BARRIER;
1665 PUTBACK;
1249 TRANSFER (ta); 1666 TRANSFER (ta);
1250 1667 SPAGAIN; /* might be the sp of a different coroutine now */
1251 if (GIMME_V != G_VOID && ta.next != ta.prev) 1668 /* be extra careful not to ever do anything after TRANSFER */
1252 XSRETURN_YES;
1253} 1669}
1254 1670
1255bool 1671bool
1256_destroy (SV *coro_sv) 1672_destroy (SV *coro_sv)
1257 CODE: 1673 CODE:
… …
1287 CODE: 1703 CODE:
1288 RETVAL = cctx_idle; 1704 RETVAL = cctx_idle;
1289 OUTPUT: 1705 OUTPUT:
1290 RETVAL 1706 RETVAL
1291 1707
1708void
1709list ()
1710 PPCODE:
1711{
1712 struct coro *coro;
1713 for (coro = coro_first; coro; coro = coro->next)
1714 if (coro->hv)
1715 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1716}
1717
1718void
1719call (Coro::State coro, SV *coderef)
1720 ALIAS:
1721 eval = 1
1722 CODE:
1723{
1724 if (coro->mainstack)
1725 {
1726 struct coro temp;
1727
1728 if (!(coro->flags & CF_RUNNING))
1729 {
1730 PUTBACK;
1731 save_perl (aTHX_ &temp);
1732 load_perl (aTHX_ coro);
1733 }
1734
1735 {
1736 dSP;
1737 ENTER;
1738 SAVETMPS;
1739 PUTBACK;
1740 PUSHSTACK;
1741 PUSHMARK (SP);
1742
1743 if (ix)
1744 eval_sv (coderef, 0);
1745 else
1746 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1747
1748 POPSTACK;
1749 SPAGAIN;
1750 FREETMPS;
1751 LEAVE;
1752 PUTBACK;
1753 }
1754
1755 if (!(coro->flags & CF_RUNNING))
1756 {
1757 save_perl (aTHX_ coro);
1758 load_perl (aTHX_ &temp);
1759 SPAGAIN;
1760 }
1761 }
1762}
1763
1764SV *
1765is_ready (Coro::State coro)
1766 PROTOTYPE: $
1767 ALIAS:
1768 is_ready = CF_READY
1769 is_running = CF_RUNNING
1770 is_new = CF_NEW
1771 is_destroyed = CF_DESTROYED
1772 CODE:
1773 RETVAL = boolSV (coro->flags & ix);
1774 OUTPUT:
1775 RETVAL
1776
1777void
1778api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1779
1780SV *
1781has_stack (Coro::State coro)
1782 PROTOTYPE: $
1783 CODE:
1784 RETVAL = boolSV (!!coro->cctx);
1785 OUTPUT:
1786 RETVAL
1787
1788int
1789is_traced (Coro::State coro)
1790 PROTOTYPE: $
1791 CODE:
1792 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1793 OUTPUT:
1794 RETVAL
1795
1796IV
1797rss (Coro::State coro)
1798 PROTOTYPE: $
1799 ALIAS:
1800 usecount = 1
1801 CODE:
1802 switch (ix)
1803 {
1804 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1805 case 1: RETVAL = coro->usecount; break;
1806 }
1807 OUTPUT:
1808 RETVAL
1809
1810void
1811force_cctx ()
1812 CODE:
1813 struct coro *coro = SvSTATE (coro_current);
1814 coro->cctx->idle_sp = 0;
1815
1292MODULE = Coro::State PACKAGE = Coro 1816MODULE = Coro::State PACKAGE = Coro
1293 1817
1294BOOT: 1818BOOT:
1295{ 1819{
1296 int i; 1820 int i;
1297 1821
1822 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1823 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1824 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1825
1826 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1827 SvREADONLY_on (coro_current);
1828
1298 coro_stash = gv_stashpv ("Coro", TRUE); 1829 coro_stash = gv_stashpv ("Coro", TRUE);
1299 1830
1300 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1831 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1301 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1832 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1302 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1833 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1303 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1834 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1304 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1835 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1305 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1836 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1306 1837
1307 coro_current = get_sv ("Coro::current", FALSE);
1308 SvREADONLY_on (coro_current);
1309
1310 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1838 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1311 coro_ready[i] = newAV (); 1839 coro_ready[i] = newAV ();
1312 1840
1313 { 1841 {
1314 SV *sv = perl_get_sv("Coro::API", 1); 1842 SV *sv = perl_get_sv ("Coro::API", TRUE);
1843 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1315 1844
1316 coroapi.schedule = api_schedule; 1845 coroapi.schedule = api_schedule;
1317 coroapi.save = api_save;
1318 coroapi.cede = api_cede; 1846 coroapi.cede = api_cede;
1319 coroapi.cede_notself = api_cede_notself; 1847 coroapi.cede_notself = api_cede_notself;
1320 coroapi.ready = api_ready; 1848 coroapi.ready = api_ready;
1321 coroapi.is_ready = api_is_ready; 1849 coroapi.is_ready = api_is_ready;
1322 coroapi.nready = &coro_nready; 1850 coroapi.nready = &coro_nready;
… …
1363 CODE: 1891 CODE:
1364 RETVAL = boolSV (api_ready (self)); 1892 RETVAL = boolSV (api_ready (self));
1365 OUTPUT: 1893 OUTPUT:
1366 RETVAL 1894 RETVAL
1367 1895
1368SV *
1369is_ready (SV *self)
1370 PROTOTYPE: $
1371 CODE:
1372 RETVAL = boolSV (api_is_ready (self));
1373 OUTPUT:
1374 RETVAL
1375
1376int 1896int
1377nready (...) 1897nready (...)
1378 PROTOTYPE: 1898 PROTOTYPE:
1379 CODE: 1899 CODE:
1380 RETVAL = coro_nready; 1900 RETVAL = coro_nready;
1381 OUTPUT: 1901 OUTPUT:
1382 RETVAL 1902 RETVAL
1383 1903
1904void
1905throw (Coro::State self, SV *throw = &PL_sv_undef)
1906 PROTOTYPE: $;$
1907 CODE:
1908 SvREFCNT_dec (self->throw);
1909 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1910
1911void
1912swap_defsv (Coro::State self)
1913 PROTOTYPE: $
1914 ALIAS:
1915 swap_defav = 1
1916 CODE:
1917 if (!self->slot)
1918 croak ("cannot swap state with coroutine that has no saved state");
1919 else
1920 {
1921 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1922 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1923
1924 SV *tmp = *src; *src = *dst; *dst = tmp;
1925 }
1926
1927# for async_pool speedup
1928void
1929_pool_1 (SV *cb)
1930 CODE:
1931{
1932 struct coro *coro = SvSTATE (coro_current);
1933 HV *hv = (HV *)SvRV (coro_current);
1934 AV *defav = GvAV (PL_defgv);
1935 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1936 AV *invoke_av;
1937 int i, len;
1938
1939 if (!invoke)
1940 {
1941 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1942 croak ("\3async_pool terminate\2\n");
1943 }
1944
1945 SvREFCNT_dec (coro->saved_deffh);
1946 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1947
1948 hv_store (hv, "desc", sizeof ("desc") - 1,
1949 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1950
1951 invoke_av = (AV *)SvRV (invoke);
1952 len = av_len (invoke_av);
1953
1954 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1955
1956 if (len > 0)
1957 {
1958 av_fill (defav, len - 1);
1959 for (i = 0; i < len; ++i)
1960 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1961 }
1962
1963 SvREFCNT_dec (invoke);
1964}
1965
1966void
1967_pool_2 (SV *cb)
1968 CODE:
1969{
1970 struct coro *coro = SvSTATE (coro_current);
1971
1972 sv_setsv (cb, &PL_sv_undef);
1973
1974 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1975 coro->saved_deffh = 0;
1976
1977 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1978 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1979 {
1980 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1981 croak ("\3async_pool terminate\2\n");
1982 }
1983
1984 av_clear (GvAV (PL_defgv));
1985 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1986 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1987
1988 coro->prio = 0;
1989
1990 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1991 api_trace (coro_current, 0);
1992
1993 av_push (av_async_pool, newSVsv (coro_current));
1994}
1995
1996
1384MODULE = Coro::State PACKAGE = Coro::AIO 1997MODULE = Coro::State PACKAGE = Coro::AIO
1385 1998
1386SV * 1999SV *
1387_get_state () 2000_get_state ()
1388 CODE: 2001 CODE:

Diff Legend

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