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Comparing Coro/Coro/State.xs (file contents):
Revision 1.30 by root, Sat Aug 25 22:19:05 2001 UTC vs.
Revision 1.61 by root, Tue Aug 10 01:56:30 2004 UTC

1#define PERL_NO_GET_CONTEXT
2
1#include "EXTERN.h" 3#include "EXTERN.h"
2#include "perl.h" 4#include "perl.h"
3#include "XSUB.h" 5#include "XSUB.h"
4 6
7#include "patchlevel.h"
8
9#if PATCHLEVEL < 6
10# ifndef PL_ppaddr
11# define PL_ppaddr ppaddr
12# endif
13# ifndef call_sv
14# define call_sv perl_call_sv
15# endif
16# ifndef get_sv
17# define get_sv perl_get_sv
18# endif
19# ifndef get_cv
20# define get_cv perl_get_cv
21# endif
22# ifndef IS_PADGV
23# define IS_PADGV(v) 0
24# endif
25# ifndef IS_PADCONST
26# define IS_PADCONST(v) 0
27# endif
28#endif
29
5#include "libcoro/coro.c" 30#include "libcoro/coro.c"
6 31
7#include <signal.h> 32#include <signal.h>
8 33
9#ifdef HAVE_MMAP 34#ifdef HAVE_MMAP
10# include <unistd.h> 35# include <unistd.h>
11# include <sys/mman.h> 36# include <sys/mman.h>
12# ifndef MAP_ANON
13# ifdef MAP_ANONYMOUS 37# ifndef MAP_ANONYMOUS
14# define MAP_ANON MAP_ANONYMOUS 38# ifdef MAP_ANON
39# define MAP_ANONYMOUS MAP_ANON
15# else 40# else
16# undef HAVE_MMAP 41# undef HAVE_MMAP
17# endif 42# endif
18# endif 43# endif
19#endif 44#endif
20 45
21#define MAY_FLUSH /* increases codesize and is rarely used */
22
23#define SUB_INIT "Coro::State::initialize" 46#define SUB_INIT "Coro::State::initialize"
24#define UCORO_STATE "_coro_state" 47#define UCORO_STATE "_coro_state"
25 48
26/* The next macro should declare a variable stacklevel that contains and approximation 49/* The next macro should declare a variable stacklevel that contains and approximation
27 * to the current C stack pointer. Its property is that it changes with each call 50 * to the current C stack pointer. Its property is that it changes with each call
28 * and should be unique. */ 51 * and should be unique. */
29#define dSTACKLEVEL void *stacklevel = &stacklevel 52#define dSTACKLEVEL void *stacklevel = &stacklevel
30 53
54#define IN_DESTRUCT (PL_main_cv == Nullcv)
55
31#define labs(l) ((l) >= 0 ? (l) : -(l)) 56#define labs(l) ((l) >= 0 ? (l) : -(l))
32 57
33#include "CoroAPI.h" 58#include "CoroAPI.h"
34 59
60#ifdef USE_ITHREADS
61static perl_mutex coro_mutex;
62# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
63# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
64#else
65# define LOCK 0
66# define UNLOCK 0
67#endif
68
35static struct CoroAPI coroapi; 69static struct CoroAPI coroapi;
70static AV *main_mainstack; /* used to differentiate between $main and others */
71static HV *coro_state_stash;
72static SV *ucoro_state_sv;
73static U32 ucoro_state_hash;
74static SV *coro_mortal; /* will be freed after next transfer */
36 75
37/* this is actually not only the c stack but also c registers etc... */ 76/* this is actually not only the c stack but also c registers etc... */
38typedef struct { 77typedef struct {
39 int refcnt; /* pointer reference counter */ 78 int refcnt; /* pointer reference counter */
40 int usecnt; /* shared by how many coroutines */ 79 int usecnt; /* shared by how many coroutines */
45 void *sptr; 84 void *sptr;
46 long ssize; /* positive == mmap, otherwise malloc */ 85 long ssize; /* positive == mmap, otherwise malloc */
47} coro_stack; 86} coro_stack;
48 87
49struct coro { 88struct coro {
89 /* the top-level JMPENV for each coroutine, needed to catch dies. */
90 JMPENV start_env;
91
50 /* the optional C context */ 92 /* the optional C context */
51 coro_stack *stack; 93 coro_stack *stack;
52 void *cursp; 94 void *cursp;
53 int gencnt; 95 int gencnt;
54 96
66 AV *curstack; 108 AV *curstack;
67 AV *mainstack; 109 AV *mainstack;
68 SV **stack_sp; 110 SV **stack_sp;
69 OP *op; 111 OP *op;
70 SV **curpad; 112 SV **curpad;
113 AV *comppad;
71 SV **stack_base; 114 SV **stack_base;
72 SV **stack_max; 115 SV **stack_max;
73 SV **tmps_stack; 116 SV **tmps_stack;
74 I32 tmps_floor; 117 I32 tmps_floor;
75 I32 tmps_ix; 118 I32 tmps_ix;
94}; 137};
95 138
96typedef struct coro *Coro__State; 139typedef struct coro *Coro__State;
97typedef struct coro *Coro__State_or_hashref; 140typedef struct coro *Coro__State_or_hashref;
98 141
99static AV *main_mainstack; /* used to differentiate between $main and others */
100static HV *coro_state_stash;
101static SV *ucoro_state_sv;
102static U32 ucoro_state_hash;
103static HV *padlist_cache;
104
105/* mostly copied from op.c:cv_clone2 */ 142/* mostly copied from op.c:cv_clone2 */
106STATIC AV * 143STATIC AV *
107clone_padlist (AV *protopadlist) 144clone_padlist (pTHX_ AV *protopadlist)
108{ 145{
109 AV *av; 146 AV *av;
110 I32 ix; 147 I32 ix;
111 AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); 148 AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE);
112 AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); 149 AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE);
136 AvFLAGS (av) = AVf_REIFY; 173 AvFLAGS (av) = AVf_REIFY;
137 174
138 for (ix = fpad; ix > 0; ix--) 175 for (ix = fpad; ix > 0; ix--)
139 { 176 {
140 SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; 177 SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
178
141 if (namesv && namesv != &PL_sv_undef) 179 if (namesv && namesv != &PL_sv_undef)
142 { 180 {
143 char *name = SvPVX (namesv); /* XXX */ 181 char *name = SvPVX (namesv); /* XXX */
182
144 if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') 183 if (SvFLAGS (namesv) & SVf_FAKE || *name == '&')
145 { /* lexical from outside? */ 184 { /* lexical from outside? */
146 npad[ix] = SvREFCNT_inc (ppad[ix]); 185 npad[ix] = SvREFCNT_inc (ppad[ix]);
147 } 186 }
148 else 187 else
154 sv = (SV *) newAV (); 193 sv = (SV *) newAV ();
155 else if (*name == '%') 194 else if (*name == '%')
156 sv = (SV *) newHV (); 195 sv = (SV *) newHV ();
157 else 196 else
158 sv = NEWSV (0, 0); 197 sv = NEWSV (0, 0);
198
199#ifdef SvPADBUSY
159 if (!SvPADBUSY (sv)) 200 if (!SvPADBUSY (sv))
201#endif
160 SvPADMY_on (sv); 202 SvPADMY_on (sv);
203
161 npad[ix] = sv; 204 npad[ix] = sv;
162 } 205 }
163 } 206 }
164 else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) 207 else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix]))
165 { 208 {
194#endif 237#endif
195 238
196 return newpadlist; 239 return newpadlist;
197} 240}
198 241
199#ifdef MAY_FLUSH
200STATIC void 242STATIC void
201free_padlist (AV *padlist) 243free_padlist (pTHX_ AV *padlist)
202{ 244{
203 /* may be during global destruction */ 245 /* may be during global destruction */
204 if (SvREFCNT(padlist)) 246 if (SvREFCNT (padlist))
205 { 247 {
206 I32 i = AvFILLp(padlist); 248 I32 i = AvFILLp (padlist);
207 while (i >= 0) 249 while (i >= 0)
208 { 250 {
209 SV **svp = av_fetch(padlist, i--, FALSE); 251 SV **svp = av_fetch (padlist, i--, FALSE);
210 SV *sv = svp ? *svp : Nullsv;
211 if (sv) 252 if (svp)
253 {
254 SV *sv;
255 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp)))
212 SvREFCNT_dec(sv); 256 SvREFCNT_dec (sv);
257
258 SvREFCNT_dec (*svp);
259 }
213 } 260 }
214 261
215 SvREFCNT_dec((SV*)padlist); 262 SvREFCNT_dec ((SV*)padlist);
216 } 263 }
217} 264}
218#endif 265
266STATIC int
267coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
268{
269 AV *padlist;
270 AV *av = (AV *)mg->mg_obj;
271
272 /* casting is fun. */
273 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
274 free_padlist (aTHX_ padlist);
275
276 SvREFCNT_dec (av);
277}
278
279#define PERL_MAGIC_coro PERL_MAGIC_ext
280
281static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
219 282
220/* the next two functions merely cache the padlists */ 283/* the next two functions merely cache the padlists */
221STATIC void 284STATIC void
222get_padlist (CV *cv) 285get_padlist (pTHX_ CV *cv)
223{ 286{
224 SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); 287 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
225 288
226 if (he && AvFILLp ((AV *)*he) >= 0) 289 if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
227 CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); 290 CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj);
228 else 291 else
229 CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); 292 CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
230} 293}
231 294
232STATIC void 295STATIC void
233put_padlist (CV *cv) 296put_padlist (pTHX_ CV *cv)
234{ 297{
235 SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); 298 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
236 299
237 if (SvTYPE (*he) != SVt_PVAV) 300 if (!mg)
238 { 301 {
239 SvREFCNT_dec (*he); 302 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
303 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
304 mg->mg_virtual = &vtbl_coro;
240 *he = (SV *)newAV (); 305 mg->mg_obj = (SV *)newAV ();
241 } 306 }
242 307
243 av_push ((AV *)*he, (SV *)CvPADLIST (cv)); 308 av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv));
244} 309}
245
246#ifdef MAY_FLUSH
247STATIC void
248flush_padlist_cache ()
249{
250 HV *hv = padlist_cache;
251 padlist_cache = newHV ();
252
253 if (hv_iterinit (hv))
254 {
255 HE *he;
256 AV *padlist;
257
258 while (!!(he = hv_iternext (hv)))
259 {
260 AV *av = (AV *)HeVAL(he);
261
262 /* casting is fun. */
263 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
264 free_padlist (padlist);
265 }
266 }
267
268 SvREFCNT_dec (hv);
269}
270#endif
271 310
272#define SB do { 311#define SB do {
273#define SE } while (0) 312#define SE } while (0)
274 313
275#define LOAD(state) load_state(aTHX_ (state)); 314#define LOAD(state) load_state(aTHX_ (state));
276#define SAVE(state,flags) save_state(aTHX_ (state),(flags)); 315#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
277 316
278#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE 317#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
279 318
280static void 319static void
281load_state(pTHX_ Coro__State c) 320load_state(pTHX_ Coro__State c)
282{ 321{
283 PL_dowarn = c->dowarn; 322 PL_dowarn = c->dowarn;
287 PL_curstack = c->curstack; 326 PL_curstack = c->curstack;
288 PL_mainstack = c->mainstack; 327 PL_mainstack = c->mainstack;
289 PL_stack_sp = c->stack_sp; 328 PL_stack_sp = c->stack_sp;
290 PL_op = c->op; 329 PL_op = c->op;
291 PL_curpad = c->curpad; 330 PL_curpad = c->curpad;
331 PL_comppad = c->comppad;
292 PL_stack_base = c->stack_base; 332 PL_stack_base = c->stack_base;
293 PL_stack_max = c->stack_max; 333 PL_stack_max = c->stack_max;
294 PL_tmps_stack = c->tmps_stack; 334 PL_tmps_stack = c->tmps_stack;
295 PL_tmps_floor = c->tmps_floor; 335 PL_tmps_floor = c->tmps_floor;
296 PL_tmps_ix = c->tmps_ix; 336 PL_tmps_ix = c->tmps_ix;
323 { 363 {
324 AV *padlist = (AV *)POPs; 364 AV *padlist = (AV *)POPs;
325 365
326 if (padlist) 366 if (padlist)
327 { 367 {
328 put_padlist (cv); /* mark this padlist as available */ 368 put_padlist (aTHX_ cv); /* mark this padlist as available */
329 CvPADLIST(cv) = padlist; 369 CvPADLIST(cv) = padlist;
330#ifdef USE_THREADS
331 /*CvOWNER(cv) = (struct perl_thread *)POPs;*/
332#endif
333 } 370 }
334 371
335 ++CvDEPTH(cv); 372 ++CvDEPTH(cv);
336 } 373 }
337 374
364 if (CxTYPE(cx) == CXt_SUB) 401 if (CxTYPE(cx) == CXt_SUB)
365 { 402 {
366 CV *cv = cx->blk_sub.cv; 403 CV *cv = cx->blk_sub.cv;
367 if (CvDEPTH(cv)) 404 if (CvDEPTH(cv))
368 { 405 {
369#ifdef USE_THREADS
370 /*XPUSHs ((SV *)CvOWNER(cv));*/
371 /*CvOWNER(cv) = 0;*/
372 /*error must unlock this cv etc.. etc...*/
373#endif
374 EXTEND (SP, CvDEPTH(cv)*2); 406 EXTEND (SP, CvDEPTH(cv)*2);
375 407
376 while (--CvDEPTH(cv)) 408 while (--CvDEPTH(cv))
377 { 409 {
378 /* this tells the restore code to increment CvDEPTH */ 410 /* this tells the restore code to increment CvDEPTH */
381 } 413 }
382 414
383 PUSHs ((SV *)CvPADLIST(cv)); 415 PUSHs ((SV *)CvPADLIST(cv));
384 PUSHs ((SV *)cv); 416 PUSHs ((SV *)cv);
385 417
386 get_padlist (cv); /* this is a monster */ 418 get_padlist (aTHX_ cv); /* this is a monster */
387 } 419 }
388 } 420 }
421#ifdef CXt_FORMAT
389 else if (CxTYPE(cx) == CXt_FORMAT) 422 else if (CxTYPE(cx) == CXt_FORMAT)
390 { 423 {
391 /* I never used formats, so how should I know how these are implemented? */ 424 /* I never used formats, so how should I know how these are implemented? */
392 /* my bold guess is as a simple, plain sub... */ 425 /* my bold guess is as a simple, plain sub... */
393 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); 426 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
394 } 427 }
428#endif
395 } 429 }
396 430
397 if (top_si->si_type == PERLSI_MAIN) 431 if (top_si->si_type == PERLSI_MAIN)
398 break; 432 break;
399 433
416 c->curstack = PL_curstack; 450 c->curstack = PL_curstack;
417 c->mainstack = PL_mainstack; 451 c->mainstack = PL_mainstack;
418 c->stack_sp = PL_stack_sp; 452 c->stack_sp = PL_stack_sp;
419 c->op = PL_op; 453 c->op = PL_op;
420 c->curpad = PL_curpad; 454 c->curpad = PL_curpad;
455 c->comppad = PL_comppad;
421 c->stack_base = PL_stack_base; 456 c->stack_base = PL_stack_base;
422 c->stack_max = PL_stack_max; 457 c->stack_max = PL_stack_max;
423 c->tmps_stack = PL_tmps_stack; 458 c->tmps_stack = PL_tmps_stack;
424 c->tmps_floor = PL_tmps_floor; 459 c->tmps_floor = PL_tmps_floor;
425 c->tmps_ix = PL_tmps_ix; 460 c->tmps_ix = PL_tmps_ix;
441} 476}
442 477
443/* 478/*
444 * allocate various perl stacks. This is an exact copy 479 * allocate various perl stacks. This is an exact copy
445 * of perl.c:init_stacks, except that it uses less memory 480 * of perl.c:init_stacks, except that it uses less memory
446 * on the assumption that coroutines do not usually need 481 * on the (sometimes correct) assumption that coroutines do
447 * a lot of stackspace. 482 * not usually need a lot of stackspace.
448 */ 483 */
449STATIC void 484STATIC void
450coro_init_stacks (pTHX) 485coro_init_stacks (pTHX)
451{ 486{
487 LOCK;
488
452 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); 489 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
453 PL_curstackinfo->si_type = PERLSI_MAIN; 490 PL_curstackinfo->si_type = PERLSI_MAIN;
454 PL_curstack = PL_curstackinfo->si_stack; 491 PL_curstack = PL_curstackinfo->si_stack;
455 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 492 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
456 493
465 502
466 New(54,PL_markstack,16,I32); 503 New(54,PL_markstack,16,I32);
467 PL_markstack_ptr = PL_markstack; 504 PL_markstack_ptr = PL_markstack;
468 PL_markstack_max = PL_markstack + 16; 505 PL_markstack_max = PL_markstack + 16;
469 506
507#ifdef SET_MARK_OFFSET
470 SET_MARK_OFFSET; 508 SET_MARK_OFFSET;
509#endif
471 510
472 New(54,PL_scopestack,16,I32); 511 New(54,PL_scopestack,16,I32);
473 PL_scopestack_ix = 0; 512 PL_scopestack_ix = 0;
474 PL_scopestack_max = 16; 513 PL_scopestack_max = 16;
475 514
478 PL_savestack_max = 96; 517 PL_savestack_max = 96;
479 518
480 New(54,PL_retstack,8,OP*); 519 New(54,PL_retstack,8,OP*);
481 PL_retstack_ix = 0; 520 PL_retstack_ix = 0;
482 PL_retstack_max = 8; 521 PL_retstack_max = 8;
522
523 UNLOCK;
483} 524}
484 525
485/* 526/*
486 * destroy the stacks, the callchain etc... 527 * destroy the stacks, the callchain etc...
487 * still there is a memleak of 128 bytes...
488 */ 528 */
489STATIC void 529STATIC void
490destroy_stacks(pTHX) 530destroy_stacks(pTHX)
491{ 531{
532 if (!IN_DESTRUCT)
533 {
492 /* is this ugly, I ask? */ 534 /* is this ugly, I ask? */
493 while (PL_scopestack_ix) 535 LEAVE_SCOPE (0);
494 LEAVE;
495 536
496 /* sure it is, but more important: is it correct?? :/ */ 537 /* sure it is, but more important: is it correct?? :/ */
497 while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
498 FREETMPS; 538 FREETMPS;
539
540 /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
541 }
499 542
500 while (PL_curstackinfo->si_next) 543 while (PL_curstackinfo->si_next)
501 PL_curstackinfo = PL_curstackinfo->si_next; 544 PL_curstackinfo = PL_curstackinfo->si_next;
502 545
503 while (PL_curstackinfo) 546 while (PL_curstackinfo)
504 { 547 {
505 PERL_SI *p = PL_curstackinfo->si_prev; 548 PERL_SI *p = PL_curstackinfo->si_prev;
506 549
507 { 550 { /*D*//*remove*/
508 dSP; 551 dSP;
509 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); 552 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
510 PUTBACK; /* possibly superfluous */ 553 PUTBACK; /* possibly superfluous */
511 } 554 }
512 555
513 if (PL_main_cv != Nullcv) /* don't during destruction. hack? */ 556 if (!IN_DESTRUCT)
514 dounwind(-1); 557 {
515 558 dounwind (-1);/*D*//*remove*/
516 SvREFCNT_dec(PL_curstackinfo->si_stack); 559 SvREFCNT_dec (PL_curstackinfo->si_stack);
560 }
561
517 Safefree(PL_curstackinfo->si_cxstack); 562 Safefree (PL_curstackinfo->si_cxstack);
518 Safefree(PL_curstackinfo); 563 Safefree (PL_curstackinfo);
519 PL_curstackinfo = p; 564 PL_curstackinfo = p;
520 } 565 }
521 566
522 Safefree(PL_tmps_stack); 567 Safefree (PL_tmps_stack);
523 Safefree(PL_markstack); 568 Safefree (PL_markstack);
524 Safefree(PL_scopestack); 569 Safefree (PL_scopestack);
525 Safefree(PL_savestack); 570 Safefree (PL_savestack);
526 Safefree(PL_retstack); 571 Safefree (PL_retstack);
527} 572}
528 573
529static void 574static void
530allocate_stack (Coro__State ctx, int alloc) 575allocate_stack (Coro__State ctx, int alloc)
531{ 576{
534 New (0, stack, 1, coro_stack); 579 New (0, stack, 1, coro_stack);
535 580
536 stack->refcnt = 1; 581 stack->refcnt = 1;
537 stack->usecnt = 1; 582 stack->usecnt = 1;
538 stack->gencnt = ctx->gencnt = 0; 583 stack->gencnt = ctx->gencnt = 0;
584
539 if (alloc) 585 if (alloc)
540 { 586 {
541#ifdef HAVE_MMAP 587#if HAVE_MMAP
542 stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ 588 stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */
543 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0); 589 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
544 if (stack->sptr == (void *)-1) 590 if (stack->sptr == (void *)-1)
545#endif 591#endif
546 { 592 {
547 /*FIXME*//*D*//* reasonable stack size! */ 593 /*FIXME*//*D*//* reasonable stack size! */
548 stack->ssize = -4096 * sizeof (long); 594 stack->ssize = - (8192 * sizeof (long));
549 New (0, stack->sptr, 4096, long); 595 New (0, stack->sptr, 8192, long);
550 } 596 }
551 } 597 }
552 else 598 else
553 stack->sptr = 0; 599 stack->sptr = 0;
554 600
568 { 614 {
569#ifdef HAVE_MMAP 615#ifdef HAVE_MMAP
570 if (stack->ssize > 0 && stack->sptr) 616 if (stack->ssize > 0 && stack->sptr)
571 munmap (stack->sptr, stack->ssize); 617 munmap (stack->sptr, stack->ssize);
572 else 618 else
573#else 619#endif
574 Safefree (stack->sptr); 620 Safefree (stack->sptr);
575#endif 621
576 Safefree (stack); 622 Safefree (stack);
577 } 623 }
578 else if (ctx->gencnt == stack->gencnt) 624 else if (ctx->gencnt == stack->gencnt)
579 --stack->usecnt; 625 --stack->usecnt;
580 } 626 }
584setup_coro (void *arg) 630setup_coro (void *arg)
585{ 631{
586 /* 632 /*
587 * emulate part of the perl startup here. 633 * emulate part of the perl startup here.
588 */ 634 */
635 dTHX;
589 dSP; 636 dSP;
590 Coro__State ctx = (Coro__State)arg; 637 Coro__State ctx = (Coro__State)arg;
591 SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); 638 SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE);
592 639
593 coro_init_stacks (aTHX); 640 coro_init_stacks (aTHX);
594 /*PL_curcop = 0;*/ 641 /*PL_curcop = 0;*/
595 /*PL_in_eval = PL_in_eval;*/ /* inherit */ 642 /*PL_in_eval = PL_in_eval;*/ /* inherit */
596 SvREFCNT_dec (GvAV (PL_defgv)); 643 SvREFCNT_dec (GvAV (PL_defgv));
597 GvAV (PL_defgv) = ctx->args; 644 GvAV (PL_defgv) = ctx->args; ctx->args = 0;
598 645
599 SPAGAIN; 646 SPAGAIN;
600 647
601 if (ctx->stack) 648 if (ctx->stack)
602 { 649 {
629 * that doesn't matter, though, since it is only 676 * that doesn't matter, though, since it is only
630 * pp_nextstate and we never return... 677 * pp_nextstate and we never return...
631 * ah yes, and I don't care anyways ;) 678 * ah yes, and I don't care anyways ;)
632 */ 679 */
633 PUTBACK; 680 PUTBACK;
634 PL_op = pp_entersub(); 681 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
635 SPAGAIN; 682 SPAGAIN;
636 683
637 ENTER; /* necessary e.g. for dounwind */ 684 ENTER; /* necessary e.g. for dounwind */
638 } 685 }
639} 686}
642continue_coro (void *arg) 689continue_coro (void *arg)
643{ 690{
644 /* 691 /*
645 * this is a _very_ stripped down perl interpreter ;) 692 * this is a _very_ stripped down perl interpreter ;)
646 */ 693 */
694 dTHX;
647 Coro__State ctx = (Coro__State)arg; 695 Coro__State ctx = (Coro__State)arg;
696 JMPENV coro_start_env;
648 697
649 /*FIXME*//* must set up top_env here */ 698 PL_top_env = &ctx->start_env;
699
650 ctx->cursp = 0; 700 ctx->cursp = 0;
651 PL_op = PL_op->op_next; 701 PL_op = PL_op->op_next;
652 CALLRUNOPS(aTHX); 702 CALLRUNOPS(aTHX);
653 703
654 abort (); 704 abort ();
655} 705}
656 706
657STATIC void 707STATIC void
658transfer(pTHX_ struct coro *prev, struct coro *next, int flags) 708transfer (pTHX_ struct coro *prev, struct coro *next, int flags)
659{ 709{
660 dSTACKLEVEL; 710 dSTACKLEVEL;
661 static struct coro *xnext;
662 711
663 if (prev != next) 712 if (prev != next)
664 { 713 {
665 xnext = next;
666
667 if (next->mainstack) 714 if (next->mainstack)
668 { 715 {
716 LOCK;
669 SAVE (prev, flags); 717 SAVE (prev, flags);
670 LOAD (next); 718 LOAD (next);
719 UNLOCK;
671 720
672 /* mark this state as in-use */ 721 /* mark this state as in-use */
673 next->mainstack = 0; 722 next->mainstack = 0;
674 next->tmps_ix = -2; 723 next->tmps_ix = -2;
675 724
694 continue_coro, (void *)next, 743 continue_coro, (void *)next,
695 next->stack->sptr, labs (next->stack->ssize)); 744 next->stack->sptr, labs (next->stack->ssize));
696 } 745 }
697 746
698 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); 747 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
748 prev->cursp = stacklevel;
699 /* don't add any code here */ 749 /* don't add any code here */
700 } 750 }
701 751 else
752 next->cursp = stacklevel;
702 } 753 }
703 else if (next->tmps_ix == -2) 754 else if (next->tmps_ix == -2)
704 croak ("tried to transfer to running coroutine"); 755 croak ("tried to transfer to running coroutine");
705 else 756 else
706 { 757 {
758 LOCK;
707 SAVE (prev, -1); /* first get rid of the old state */ 759 SAVE (prev, -1); /* first get rid of the old state */
760 UNLOCK;
708 761
709 if (flags & TRANSFER_SAVE_CCTXT) 762 if (flags & TRANSFER_SAVE_CCTXT)
710 { 763 {
711 if (!prev->stack) 764 if (!prev->stack)
712 allocate_stack (prev, 0); 765 allocate_stack (prev, 0);
713 766
714 if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) 767 if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
715 { 768 {
769 PL_top_env = &next->start_env;
770
716 setup_coro (next); 771 setup_coro (next);
772 next->cursp = stacklevel;
717 773
718 prev->stack->refcnt++; 774 prev->stack->refcnt++;
719 prev->stack->usecnt++; 775 prev->stack->usecnt++;
720 next->stack = prev->stack; 776 next->stack = prev->stack;
721 next->gencnt = prev->gencnt; 777 next->gencnt = prev->gencnt;
722 } 778 }
723 else 779 else
724 { 780 {
781 assert (!next->stack);
725 allocate_stack (next, 1); 782 allocate_stack (next, 1);
726 coro_create (&(next->stack->cctx), 783 coro_create (&(next->stack->cctx),
727 setup_coro, (void *)next, 784 setup_coro, (void *)next,
728 next->stack->sptr, labs (next->stack->ssize)); 785 next->stack->sptr, labs (next->stack->ssize));
729 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); 786 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
787 prev->cursp = stacklevel;
730 /* don't add any code here */ 788 /* don't add any code here */
731 } 789 }
732 } 790 }
733 else 791 else
792 {
734 setup_coro (next); 793 setup_coro (next);
794 next->cursp = stacklevel;
795 }
735 } 796 }
736 } 797 }
737 798
738 /* 799 LOCK;
739 * xnext is now either prev or next, depending on wether 800 if (coro_mortal)
740 * we switched the c stack or not. that's why i use a global
741 * variable, that should become thread-specific at one point.
742 */
743 xnext->cursp = stacklevel;
744}
745
746static struct coro *
747sv_to_coro (SV *arg, const char *funcname, const char *varname)
748{
749 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
750 { 801 {
751 HE *he = hv_fetch_ent((HV *)SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash); 802 SvREFCNT_dec (coro_mortal);
752 803 coro_mortal = 0;
753 if (!he)
754 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
755
756 arg = HeVAL(he);
757 } 804 }
758 805 UNLOCK;
806}
807
808#define SV_CORO(sv,func) \
809 do { \
810 if (SvROK (sv)) \
811 sv = SvRV (sv); \
812 \
813 if (SvTYPE (sv) == SVt_PVHV) \
814 { \
815 HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \
816 \
817 if (!he) \
818 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
819 \
820 (sv) = SvRV (HeVAL(he)); \
821 } \
822 \
759 /* must also be changed inside Coro::Cont::yield */ 823 /* must also be changed inside Coro::Cont::yield */ \
760 if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash) 824 if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \
761 return (struct coro *) SvIV((SV*)SvRV(arg));
762
763 croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname); 825 croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
764 /*NORETURN*/ 826 \
765} 827 } while(0)
828
829#define SvSTATE(sv) (struct coro *)SvIV (sv)
766 830
767static void 831static void
768api_transfer(pTHX_ SV *prev, SV *next, int flags) 832api_transfer(pTHX_ SV *prev, SV *next, int flags)
769{ 833{
770 transfer(aTHX_ 834 SV_CORO (prev, "Coro::transfer");
771 sv_to_coro (prev, "Coro::transfer", "prev"), 835 SV_CORO (next, "Coro::transfer");
772 sv_to_coro (next, "Coro::transfer", "next"), 836
773 flags); 837 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
774} 838}
775 839
776/** Coro ********************************************************************/ 840/** Coro ********************************************************************/
777 841
778#define PRIO_MAX 3 842#define PRIO_MAX 3
786static GV *coro_current, *coro_idle; 850static GV *coro_current, *coro_idle;
787static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; 851static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
788static int coro_nready; 852static int coro_nready;
789 853
790static void 854static void
791coro_enq (SV *sv) 855coro_enq (pTHX_ SV *sv)
792{ 856{
793 if (SvROK (sv)) 857 if (SvTYPE (sv) == SVt_PVHV)
794 { 858 {
795 SV *hv = SvRV (sv);
796 if (SvTYPE (hv) == SVt_PVHV)
797 {
798 SV **xprio = hv_fetch ((HV *)hv, "prio", 4, 0); 859 SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
799 int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; 860 int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
800 861
801 prio = prio > PRIO_MAX ? PRIO_MAX 862 prio = prio > PRIO_MAX ? PRIO_MAX
802 : prio < PRIO_MIN ? PRIO_MIN 863 : prio < PRIO_MIN ? PRIO_MIN
803 : prio; 864 : prio;
804 865
805 av_push (coro_ready [prio - PRIO_MIN], sv); 866 av_push (coro_ready [prio - PRIO_MIN], sv);
806 coro_nready++; 867 coro_nready++;
807 868
808 return; 869 return;
809 }
810 } 870 }
811 871
812 croak ("Coro::ready tried to enqueue something that is not a coroutine"); 872 croak ("Coro::ready tried to enqueue something that is not a coroutine");
813} 873}
814 874
815static SV * 875static SV *
816coro_deq (int min_prio) 876coro_deq (pTHX_ int min_prio)
817{ 877{
818 int prio = PRIO_MAX - PRIO_MIN; 878 int prio = PRIO_MAX - PRIO_MIN;
819 879
820 min_prio -= PRIO_MIN; 880 min_prio -= PRIO_MIN;
821 if (min_prio < 0) 881 if (min_prio < 0)
832} 892}
833 893
834static void 894static void
835api_ready (SV *coro) 895api_ready (SV *coro)
836{ 896{
897 dTHX;
898
899 if (SvROK (coro))
900 coro = SvRV (coro);
901
902 LOCK;
837 coro_enq (SvREFCNT_inc (coro)); 903 coro_enq (aTHX_ SvREFCNT_inc (coro));
904 UNLOCK;
838} 905}
839 906
840static void 907static void
841api_schedule (int cede) 908api_schedule (void)
842{ 909{
910 dTHX;
911
843 SV *prev, *next; 912 SV *prev, *next;
844 913
914 LOCK;
915
845 prev = GvSV (coro_current); 916 prev = SvRV (GvSV (coro_current));
846
847 if (cede)
848 coro_enq (SvREFCNT_inc (prev));
849
850 next = coro_deq (PRIO_MIN); 917 next = coro_deq (aTHX_ PRIO_MIN);
851 918
852 if (!next) 919 if (!next)
853 next = SvREFCNT_inc (GvSV (coro_idle)); 920 next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
854 921
855 GvSV (coro_current) = SvREFCNT_inc (next); 922 /* free this only after the transfer */
856 transfer (aTHX_ 923 coro_mortal = prev;
857 sv_to_coro (prev, "Coro::schedule", "current coroutine"), 924 SV_CORO (prev, "Coro::schedule");
858 sv_to_coro (next, "Coro::schedule", "next coroutine"), 925
926 SvRV (GvSV (coro_current)) = next;
927
928 SV_CORO (next, "Coro::schedule");
929
930 UNLOCK;
931
932 transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
859 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); 933 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK);
860 SvREFCNT_dec (next); 934}
861 SvREFCNT_dec (prev); 935
936static void
937api_cede (void)
938{
939 dTHX;
940
941 LOCK;
942 coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
943 UNLOCK;
944
945 api_schedule ();
862} 946}
863 947
864MODULE = Coro::State PACKAGE = Coro::State 948MODULE = Coro::State PACKAGE = Coro::State
865 949
866PROTOTYPES: ENABLE 950PROTOTYPES: ENABLE
867 951
868BOOT: 952BOOT:
869{ /* {} necessary for stoopid perl-5.6.x */ 953{ /* {} necessary for stoopid perl-5.6.x */
954#ifdef USE_ITHREADS
955 MUTEX_INIT (&coro_mutex);
956#endif
957
870 ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); 958 ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
871 PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); 959 PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
872 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 960 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
873 961
874 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 962 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
875 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 963 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
876 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 964 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
877 newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); 965 newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
878
879 if (!padlist_cache)
880 padlist_cache = newHV ();
881 966
882 main_mainstack = PL_mainstack; 967 main_mainstack = PL_mainstack;
883 968
884 coroapi.ver = CORO_API_VERSION; 969 coroapi.ver = CORO_API_VERSION;
885 coroapi.transfer = api_transfer; 970 coroapi.transfer = api_transfer;
893 Coro__State coro; 978 Coro__State coro;
894 979
895 if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) 980 if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV)
896 croak ("Coro::State::_newprocess expects an arrayref"); 981 croak ("Coro::State::_newprocess expects an arrayref");
897 982
898 New (0, coro, 1, struct coro); 983 Newz (0, coro, 1, struct coro);
899 984
900 coro->args = (AV *)SvREFCNT_inc (SvRV (args)); 985 coro->args = (AV *)SvREFCNT_inc (SvRV (args));
901 coro->mainstack = 0; /* actual work is done inside transfer */ 986 /*coro->mainstack = 0; *//*actual work is done inside transfer */
902 coro->stack = 0; 987 /*coro->stack = 0;*/
988
989 /* same as JMPENV_BOOTSTRAP */
990 /* we might be able to recycle start_env, but safe is safe */
991 /*Zero(&coro->start_env, 1, JMPENV);*/
992 coro->start_env.je_ret = -1;
993 coro->start_env.je_mustcatch = TRUE;
903 994
904 RETVAL = coro; 995 RETVAL = coro;
905 OUTPUT: 996 OUTPUT:
906 RETVAL 997 RETVAL
907 998
908void 999void
909transfer(prev, next, flags) 1000transfer(prev, next, flags)
910 Coro::State_or_hashref prev 1001 SV *prev
911 Coro::State_or_hashref next 1002 SV *next
912 int flags 1003 int flags
913 PROTOTYPE: @ 1004 PROTOTYPE: @
914 CODE: 1005 CODE:
915 PUTBACK; 1006 PUTBACK;
1007 SV_CORO (next, "Coro::transfer");
1008 SV_CORO (prev, "Coro::transfer");
916 transfer (aTHX_ prev, next, flags); 1009 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
917 SPAGAIN; 1010 SPAGAIN;
918 1011
919void 1012void
920DESTROY(coro) 1013DESTROY(coro)
921 Coro::State coro 1014 Coro::State coro
924 if (coro->mainstack && coro->mainstack != main_mainstack) 1017 if (coro->mainstack && coro->mainstack != main_mainstack)
925 { 1018 {
926 struct coro temp; 1019 struct coro temp;
927 1020
928 PUTBACK; 1021 PUTBACK;
929 SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); 1022 SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
930 LOAD(aTHX_ coro); 1023 LOAD (aTHX_ coro);
931 SPAGAIN; 1024 SPAGAIN;
932 1025
933 destroy_stacks (aTHX); 1026 destroy_stacks (aTHX);
934 1027
935 LOAD((&temp)); /* this will get rid of defsv etc.. */ 1028 LOAD ((&temp)); /* this will get rid of defsv etc.. */
936 SPAGAIN; 1029 SPAGAIN;
937 1030
938 coro->mainstack = 0; 1031 coro->mainstack = 0;
939 } 1032 }
940 1033
941 deallocate_stack (coro); 1034 deallocate_stack (coro);
942 1035 SvREFCNT_dec (coro->args);
943 Safefree (coro); 1036 Safefree (coro);
944
945void
946flush()
947 CODE:
948#ifdef MAY_FLUSH
949 flush_padlist_cache ();
950#endif
951 1037
952void 1038void
953_exit(code) 1039_exit(code)
954 int code 1040 int code
955 PROTOTYPE: $ 1041 PROTOTYPE: $
956 CODE: 1042 CODE:
957#if defined(__GLIBC__) || _POSIX_C_SOURCE
958 _exit (code); 1043 _exit (code);
959#else
960 signal (SIGTERM, SIG_DFL);
961 raise (SIGTERM);
962 exit (code);
963#endif
964 1044
965MODULE = Coro::State PACKAGE = Coro::Cont 1045MODULE = Coro::State PACKAGE = Coro::Cont
966 1046
967# this is slightly dirty (should expose a c-level api) 1047# this is slightly dirty (should expose a c-level api)
968 1048
974 SV *sv; 1054 SV *sv;
975 AV *defav = GvAV (PL_defgv); 1055 AV *defav = GvAV (PL_defgv);
976 struct coro *prev, *next; 1056 struct coro *prev, *next;
977 1057
978 if (!returnstk) 1058 if (!returnstk)
979 returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); 1059 returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
980 1060
981 /* set up @_ -- ugly */ 1061 /* set up @_ -- ugly */
982 av_clear (defav); 1062 av_clear (defav);
983 av_fill (defav, items - 1); 1063 av_fill (defav, items - 1);
984 while (items--) 1064 while (items--)
985 av_store (defav, items, SvREFCNT_inc (ST(items))); 1065 av_store (defav, items, SvREFCNT_inc (ST(items)));
986 1066
987 mg_get (returnstk); /* isn't documentation wrong for mg_get? */ 1067 SvGETMAGIC (returnstk); /* isn't documentation wrong for mg_get? */
988 sv = av_pop ((AV *)SvRV (returnstk)); 1068 sv = av_pop ((AV *)SvRV (returnstk));
989 prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); 1069 prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0)));
990 next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); 1070 next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0)));
991 SvREFCNT_dec (sv); 1071 SvREFCNT_dec (sv);
992 1072
993 transfer(aTHX_ prev, next, 0); 1073 transfer (aTHX_ prev, next, 0);
994 1074
995MODULE = Coro::State PACKAGE = Coro 1075MODULE = Coro::State PACKAGE = Coro
996 1076
997# this is slightly dirty (should expose a c-level api) 1077# this is slightly dirty (should expose a c-level api)
998 1078
1016 1096
1017 { 1097 {
1018 SV *sv = perl_get_sv("Coro::API", 1); 1098 SV *sv = perl_get_sv("Coro::API", 1);
1019 1099
1020 coroapi.schedule = api_schedule; 1100 coroapi.schedule = api_schedule;
1101 coroapi.cede = api_cede;
1021 coroapi.ready = api_ready; 1102 coroapi.ready = api_ready;
1022 coroapi.nready = &coro_nready; 1103 coroapi.nready = &coro_nready;
1023 coroapi.current = coro_current; 1104 coroapi.current = coro_current;
1024 1105
1025 GCoroAPI = &coroapi; 1106 GCoroAPI = &coroapi;
1026 sv_setiv(sv, (IV)&coroapi); 1107 sv_setiv(sv, (IV)&coroapi);
1027 SvREADONLY_on(sv); 1108 SvREADONLY_on(sv);
1028 } 1109 }
1029} 1110}
1030 1111
1112#if !PERL_MICRO
1113
1031void 1114void
1032ready(self) 1115ready(self)
1033 SV * self 1116 SV * self
1117 PROTOTYPE: $
1034 CODE: 1118 CODE:
1035 api_ready (self); 1119 api_ready (self);
1120
1121#endif
1036 1122
1037int 1123int
1038nready(...) 1124nready(...)
1039 PROTOTYPE: 1125 PROTOTYPE:
1040 CODE: 1126 CODE:
1043 RETVAL 1129 RETVAL
1044 1130
1045void 1131void
1046schedule(...) 1132schedule(...)
1047 PROTOTYPE: 1133 PROTOTYPE:
1048 ALIAS:
1049 cede = 1
1050 CODE: 1134 CODE:
1051 api_schedule (ix); 1135 api_schedule ();
1052 1136
1137void
1138cede(...)
1139 PROTOTYPE:
1140 CODE:
1141 api_cede ();
1142

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