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Comparing Coro/Coro/State.xs (file contents):
Revision 1.25 by root, Wed Aug 15 03:24:07 2001 UTC vs.
Revision 1.56 by pcg, Thu Apr 1 02:41:05 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 */
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 delcare 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 __thread 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 242STATIC void
200STATIC AV *
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
277#define PERL_MAGIC_coro PERL_MAGIC_ext
278
279static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
219 280
220/* the next two functions merely cache the padlists */ 281/* the next two functions merely cache the padlists */
221STATIC void 282STATIC void
222get_padlist (CV *cv) 283get_padlist (pTHX_ CV *cv)
223{ 284{
224 SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); 285 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
225 286
226 if (he && AvFILLp ((AV *)*he) >= 0) 287 if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
227 CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); 288 CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj);
228 else 289 else
229 CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); 290 CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
230} 291}
231 292
232STATIC void 293STATIC void
233put_padlist (CV *cv) 294put_padlist (pTHX_ CV *cv)
234{ 295{
235 SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); 296 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
236 297
237 if (SvTYPE (*he) != SVt_PVAV) 298 if (!mg)
238 { 299 {
239 SvREFCNT_dec (*he); 300 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
301 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
302 mg->mg_virtual = &vtbl_coro;
240 *he = (SV *)newAV (); 303 mg->mg_obj = (SV *)newAV ();
241 } 304 }
242 305
243 av_push ((AV *)*he, (SV *)CvPADLIST (cv)); 306 av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv));
244} 307}
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
271 308
272#define SB do { 309#define SB do {
273#define SE } while (0) 310#define SE } while (0)
274 311
275#define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE 312#define LOAD(state) load_state(aTHX_ (state));
276#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE 313#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
277 314
278#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE 315#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
279 316
280static void 317static void
281load_state(pTHX_ Coro__State c) 318load_state(pTHX_ Coro__State c)
282{ 319{
283 PL_dowarn = c->dowarn; 320 PL_dowarn = c->dowarn;
287 PL_curstack = c->curstack; 324 PL_curstack = c->curstack;
288 PL_mainstack = c->mainstack; 325 PL_mainstack = c->mainstack;
289 PL_stack_sp = c->stack_sp; 326 PL_stack_sp = c->stack_sp;
290 PL_op = c->op; 327 PL_op = c->op;
291 PL_curpad = c->curpad; 328 PL_curpad = c->curpad;
329 PL_comppad = c->comppad;
292 PL_stack_base = c->stack_base; 330 PL_stack_base = c->stack_base;
293 PL_stack_max = c->stack_max; 331 PL_stack_max = c->stack_max;
294 PL_tmps_stack = c->tmps_stack; 332 PL_tmps_stack = c->tmps_stack;
295 PL_tmps_floor = c->tmps_floor; 333 PL_tmps_floor = c->tmps_floor;
296 PL_tmps_ix = c->tmps_ix; 334 PL_tmps_ix = c->tmps_ix;
323 { 361 {
324 AV *padlist = (AV *)POPs; 362 AV *padlist = (AV *)POPs;
325 363
326 if (padlist) 364 if (padlist)
327 { 365 {
328 put_padlist (cv); /* mark this padlist as available */ 366 put_padlist (aTHX_ cv); /* mark this padlist as available */
329 CvPADLIST(cv) = padlist; 367 CvPADLIST(cv) = padlist;
330#ifdef USE_THREADS
331 /*CvOWNER(cv) = (struct perl_thread *)POPs;*/
332#endif
333 } 368 }
334 369
335 ++CvDEPTH(cv); 370 ++CvDEPTH(cv);
336 } 371 }
337 372
355 390
356 PUSHs (Nullsv); 391 PUSHs (Nullsv);
357 /* this loop was inspired by pp_caller */ 392 /* this loop was inspired by pp_caller */
358 for (;;) 393 for (;;)
359 { 394 {
360 do 395 while (cxix >= 0)
361 { 396 {
362 PERL_CONTEXT *cx = &ccstk[cxix--]; 397 PERL_CONTEXT *cx = &ccstk[cxix--];
363 398
364 if (CxTYPE(cx) == CXt_SUB) 399 if (CxTYPE(cx) == CXt_SUB)
365 { 400 {
366 CV *cv = cx->blk_sub.cv; 401 CV *cv = cx->blk_sub.cv;
367 if (CvDEPTH(cv)) 402 if (CvDEPTH(cv))
368 { 403 {
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); 404 EXTEND (SP, CvDEPTH(cv)*2);
375 405
376 while (--CvDEPTH(cv)) 406 while (--CvDEPTH(cv))
377 { 407 {
378 /* this tells the restore code to increment CvDEPTH */ 408 /* this tells the restore code to increment CvDEPTH */
381 } 411 }
382 412
383 PUSHs ((SV *)CvPADLIST(cv)); 413 PUSHs ((SV *)CvPADLIST(cv));
384 PUSHs ((SV *)cv); 414 PUSHs ((SV *)cv);
385 415
386 get_padlist (cv); /* this is a monster */ 416 get_padlist (aTHX_ cv); /* this is a monster */
387 } 417 }
388 } 418 }
419#ifdef CXt_FORMAT
389 else if (CxTYPE(cx) == CXt_FORMAT) 420 else if (CxTYPE(cx) == CXt_FORMAT)
390 { 421 {
391 /* I never used formats, so how should I know how these are implemented? */ 422 /* I never used formats, so how should I know how these are implemented? */
392 /* my bold guess is as a simple, plain sub... */ 423 /* my bold guess is as a simple, plain sub... */
393 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); 424 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
394 } 425 }
426#endif
395 } 427 }
396 while (cxix >= 0);
397 428
398 if (top_si->si_type == PERLSI_MAIN) 429 if (top_si->si_type == PERLSI_MAIN)
399 break; 430 break;
400 431
401 top_si = top_si->si_prev; 432 top_si = top_si->si_prev;
407 } 438 }
408 439
409 c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 440 c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
410 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 441 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
411 c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 442 c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
412
413 /* I have not the slightest idea of why av_reify is necessary */
414 /* but if it's missing the defav contents magically get replaced sometimes */
415 if (c->defav)
416 av_reify (c->defav);
417 443
418 c->dowarn = PL_dowarn; 444 c->dowarn = PL_dowarn;
419 c->in_eval = PL_in_eval; 445 c->in_eval = PL_in_eval;
420 446
421 c->curstackinfo = PL_curstackinfo; 447 c->curstackinfo = PL_curstackinfo;
422 c->curstack = PL_curstack; 448 c->curstack = PL_curstack;
423 c->mainstack = PL_mainstack; 449 c->mainstack = PL_mainstack;
424 c->stack_sp = PL_stack_sp; 450 c->stack_sp = PL_stack_sp;
425 c->op = PL_op; 451 c->op = PL_op;
426 c->curpad = PL_curpad; 452 c->curpad = PL_curpad;
453 c->comppad = PL_comppad;
427 c->stack_base = PL_stack_base; 454 c->stack_base = PL_stack_base;
428 c->stack_max = PL_stack_max; 455 c->stack_max = PL_stack_max;
429 c->tmps_stack = PL_tmps_stack; 456 c->tmps_stack = PL_tmps_stack;
430 c->tmps_floor = PL_tmps_floor; 457 c->tmps_floor = PL_tmps_floor;
431 c->tmps_ix = PL_tmps_ix; 458 c->tmps_ix = PL_tmps_ix;
447} 474}
448 475
449/* 476/*
450 * allocate various perl stacks. This is an exact copy 477 * allocate various perl stacks. This is an exact copy
451 * of perl.c:init_stacks, except that it uses less memory 478 * of perl.c:init_stacks, except that it uses less memory
452 * on the assumption that coroutines do not usually need 479 * on the (sometimes correct) assumption that coroutines do
453 * a lot of stackspace. 480 * not usually need a lot of stackspace.
454 */ 481 */
455STATIC void 482STATIC void
456coro_init_stacks (pTHX) 483coro_init_stacks (pTHX)
457{ 484{
485 LOCK;
486
458 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); 487 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
459 PL_curstackinfo->si_type = PERLSI_MAIN; 488 PL_curstackinfo->si_type = PERLSI_MAIN;
460 PL_curstack = PL_curstackinfo->si_stack; 489 PL_curstack = PL_curstackinfo->si_stack;
461 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 490 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
462 491
471 500
472 New(54,PL_markstack,16,I32); 501 New(54,PL_markstack,16,I32);
473 PL_markstack_ptr = PL_markstack; 502 PL_markstack_ptr = PL_markstack;
474 PL_markstack_max = PL_markstack + 16; 503 PL_markstack_max = PL_markstack + 16;
475 504
505#ifdef SET_MARK_OFFSET
476 SET_MARK_OFFSET; 506 SET_MARK_OFFSET;
507#endif
477 508
478 New(54,PL_scopestack,16,I32); 509 New(54,PL_scopestack,16,I32);
479 PL_scopestack_ix = 0; 510 PL_scopestack_ix = 0;
480 PL_scopestack_max = 16; 511 PL_scopestack_max = 16;
481 512
484 PL_savestack_max = 96; 515 PL_savestack_max = 96;
485 516
486 New(54,PL_retstack,8,OP*); 517 New(54,PL_retstack,8,OP*);
487 PL_retstack_ix = 0; 518 PL_retstack_ix = 0;
488 PL_retstack_max = 8; 519 PL_retstack_max = 8;
520
521 UNLOCK;
489} 522}
490 523
491/* 524/*
492 * destroy the stacks, the callchain etc... 525 * destroy the stacks, the callchain etc...
493 * still there is a memleak of 128 bytes...
494 */ 526 */
495STATIC void 527STATIC void
496destroy_stacks(pTHX) 528destroy_stacks(pTHX)
497{ 529{
530 if (!IN_DESTRUCT)
531 {
498 /* is this ugly, I ask? */ 532 /* is this ugly, I ask? */
499 while (PL_scopestack_ix) 533 LEAVE_SCOPE (0);
500 LEAVE;
501 534
502 /* sure it is, but more important: is it correct?? :/ */ 535 /* sure it is, but more important: is it correct?? :/ */
503 while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
504 FREETMPS; 536 FREETMPS;
537 }
505 538
506 while (PL_curstackinfo->si_next) 539 while (PL_curstackinfo->si_next)
507 PL_curstackinfo = PL_curstackinfo->si_next; 540 PL_curstackinfo = PL_curstackinfo->si_next;
508 541
509 while (PL_curstackinfo) 542 while (PL_curstackinfo)
514 dSP; 547 dSP;
515 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); 548 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
516 PUTBACK; /* possibly superfluous */ 549 PUTBACK; /* possibly superfluous */
517 } 550 }
518 551
519 if (PL_main_cv != Nullcv) /* don't during destruction. hack? */ 552 if (!IN_DESTRUCT)
553 {
520 dounwind(-1); 554 dounwind(-1);
521
522 SvREFCNT_dec(PL_curstackinfo->si_stack); 555 SvREFCNT_dec(PL_curstackinfo->si_stack);
556 }
557
523 Safefree(PL_curstackinfo->si_cxstack); 558 Safefree(PL_curstackinfo->si_cxstack);
524 Safefree(PL_curstackinfo); 559 Safefree(PL_curstackinfo);
525 PL_curstackinfo = p; 560 PL_curstackinfo = p;
526 } 561 }
527 562
540 New (0, stack, 1, coro_stack); 575 New (0, stack, 1, coro_stack);
541 576
542 stack->refcnt = 1; 577 stack->refcnt = 1;
543 stack->usecnt = 1; 578 stack->usecnt = 1;
544 stack->gencnt = ctx->gencnt = 0; 579 stack->gencnt = ctx->gencnt = 0;
580
545 if (alloc) 581 if (alloc)
546 { 582 {
547#ifdef HAVE_MMAP 583#if HAVE_MMAP
548 stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ 584 stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */
549 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0); 585 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
550 if (stack->sptr == (void *)-1) 586 if (stack->sptr == (void *)-1)
551#endif 587#endif
552 { 588 {
553 /*FIXME*//*D*//* reasonable stack size! */ 589 /*FIXME*//*D*//* reasonable stack size! */
554 stack->ssize = -4096 * sizeof (long); 590 stack->ssize = - (8192 * sizeof (long));
555 New (0, stack->sptr, 4096, long); 591 New (0, stack->sptr, 8192, long);
556 } 592 }
557 } 593 }
558 else 594 else
559 stack->sptr = 0; 595 stack->sptr = 0;
560 596
574 { 610 {
575#ifdef HAVE_MMAP 611#ifdef HAVE_MMAP
576 if (stack->ssize > 0 && stack->sptr) 612 if (stack->ssize > 0 && stack->sptr)
577 munmap (stack->sptr, stack->ssize); 613 munmap (stack->sptr, stack->ssize);
578 else 614 else
579#else 615#endif
580 Safefree (stack->sptr); 616 Safefree (stack->sptr);
581#endif 617
582 Safefree (stack); 618 Safefree (stack);
583 } 619 }
584 else if (ctx->gencnt == stack->gencnt) 620 else if (ctx->gencnt == stack->gencnt)
585 --stack->usecnt; 621 --stack->usecnt;
586 } 622 }
590setup_coro (void *arg) 626setup_coro (void *arg)
591{ 627{
592 /* 628 /*
593 * emulate part of the perl startup here. 629 * emulate part of the perl startup here.
594 */ 630 */
631 dTHX;
595 dSP; 632 dSP;
596 Coro__State ctx = (Coro__State)arg; 633 Coro__State ctx = (Coro__State)arg;
597 SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); 634 SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE);
598 635
599 coro_init_stacks (aTHX); 636 coro_init_stacks (aTHX);
600 /*PL_curcop = 0;*/ 637 /*PL_curcop = 0;*/
601 /*PL_in_eval = PL_in_eval;*/ /* inherit */ 638 /*PL_in_eval = PL_in_eval;*/ /* inherit */
602 SvREFCNT_dec (GvAV (PL_defgv)); 639 SvREFCNT_dec (GvAV (PL_defgv));
603 GvAV (PL_defgv) = ctx->args; 640 GvAV (PL_defgv) = ctx->args; ctx->args = 0;
604 641
605 SPAGAIN; 642 SPAGAIN;
606 643
607 if (ctx->stack) 644 if (ctx->stack)
608 { 645 {
635 * that doesn't matter, though, since it is only 672 * that doesn't matter, though, since it is only
636 * pp_nextstate and we never return... 673 * pp_nextstate and we never return...
637 * ah yes, and I don't care anyways ;) 674 * ah yes, and I don't care anyways ;)
638 */ 675 */
639 PUTBACK; 676 PUTBACK;
640 PL_op = pp_entersub(); 677 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
641 SPAGAIN; 678 SPAGAIN;
642 679
643 ENTER; /* necessary e.g. for dounwind */ 680 ENTER; /* necessary e.g. for dounwind */
644 } 681 }
645} 682}
648continue_coro (void *arg) 685continue_coro (void *arg)
649{ 686{
650 /* 687 /*
651 * this is a _very_ stripped down perl interpreter ;) 688 * this is a _very_ stripped down perl interpreter ;)
652 */ 689 */
690 dTHX;
653 Coro__State ctx = (Coro__State)arg; 691 Coro__State ctx = (Coro__State)arg;
692 JMPENV coro_start_env;
654 693
655 /*FIXME*//* must set up top_env here */ 694 PL_top_env = &ctx->start_env;
695
656 ctx->cursp = 0; 696 ctx->cursp = 0;
657 PL_op = PL_op->op_next; 697 PL_op = PL_op->op_next;
658 CALLRUNOPS(aTHX); 698 CALLRUNOPS(aTHX);
659 699
660 abort (); 700 abort ();
661} 701}
662 702
663STATIC void 703STATIC void
664transfer(pTHX_ struct coro *prev, struct coro *next, int flags) 704transfer (pTHX_ struct coro *prev, struct coro *next, int flags)
665{ 705{
666 dSP;
667 dSTACKLEVEL; 706 dSTACKLEVEL;
668 707
669 if (prev != next) 708 if (prev != next)
670 { 709 {
671 if (next->mainstack) 710 if (next->mainstack)
672 { 711 {
712 LOCK;
673 SAVE (prev, flags); 713 SAVE (prev, flags);
674 LOAD (next); 714 LOAD (next);
715 UNLOCK;
675 716
676 /* mark this state as in-use */ 717 /* mark this state as in-use */
677 next->mainstack = 0; 718 next->mainstack = 0;
678 next->tmps_ix = -2; 719 next->tmps_ix = -2;
679 720
698 continue_coro, (void *)next, 739 continue_coro, (void *)next,
699 next->stack->sptr, labs (next->stack->ssize)); 740 next->stack->sptr, labs (next->stack->ssize));
700 } 741 }
701 742
702 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); 743 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
744 prev->cursp = stacklevel;
745 /* don't add any code here */
703 } 746 }
704 747 else
748 next->cursp = stacklevel;
705 } 749 }
706 else if (next->tmps_ix == -2) 750 else if (next->tmps_ix == -2)
707 croak ("tried to transfer to running coroutine"); 751 croak ("tried to transfer to running coroutine");
708 else 752 else
709 { 753 {
754 LOCK;
710 SAVE (prev, -1); /* first get rid of the old state */ 755 SAVE (prev, -1); /* first get rid of the old state */
756 UNLOCK;
711 757
712 if (flags & TRANSFER_SAVE_CCTXT) 758 if (flags & TRANSFER_SAVE_CCTXT)
713 { 759 {
714 if (!prev->stack) 760 if (!prev->stack)
715 allocate_stack (prev, 0); 761 allocate_stack (prev, 0);
716 762
717 if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) 763 if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
718 { 764 {
765 PL_top_env = &next->start_env;
766
719 setup_coro (next); 767 setup_coro (next);
768 next->cursp = stacklevel;
720 769
721 prev->stack->refcnt++; 770 prev->stack->refcnt++;
722 prev->stack->usecnt++; 771 prev->stack->usecnt++;
723 next->stack = prev->stack; 772 next->stack = prev->stack;
724 next->gencnt = prev->gencnt; 773 next->gencnt = prev->gencnt;
725 } 774 }
726 else 775 else
727 { 776 {
777 assert (!next->stack);
728 allocate_stack (next, 1); 778 allocate_stack (next, 1);
729 coro_create (&(next->stack->cctx), 779 coro_create (&(next->stack->cctx),
730 setup_coro, (void *)next, 780 setup_coro, (void *)next,
731 next->stack->sptr, labs (next->stack->ssize)); 781 next->stack->sptr, labs (next->stack->ssize));
732 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); 782 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
783 prev->cursp = stacklevel;
784 /* don't add any code here */
733 } 785 }
734 } 786 }
735 else 787 else
788 {
736 setup_coro (next); 789 setup_coro (next);
790 next->cursp = stacklevel;
791 }
737 } 792 }
738 } 793 }
739 794
740 next->cursp = stacklevel; 795 LOCK;
741} 796 if (coro_mortal)
742
743static struct coro *
744sv_to_coro (SV *arg, const char *funcname, const char *varname)
745{
746 if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
747 { 797 {
748 HE *he = hv_fetch_ent((HV *)SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash); 798 SvREFCNT_dec (coro_mortal);
749 799 coro_mortal = 0;
750 if (!he)
751 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
752
753 arg = HeVAL(he);
754 } 800 }
755 801 UNLOCK;
802}
803
804#define SV_CORO(sv,func) \
805 do { \
806 if (SvROK (sv)) \
807 sv = SvRV (sv); \
808 \
809 if (SvTYPE (sv) == SVt_PVHV) \
810 { \
811 HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \
812 \
813 if (!he) \
814 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
815 \
816 (sv) = SvRV (HeVAL(he)); \
817 } \
818 \
756 /* must also be changed inside Coro::Cont::yield */ 819 /* must also be changed inside Coro::Cont::yield */ \
757 if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash) 820 if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \
758 return (struct coro *) SvIV((SV*)SvRV(arg));
759 else
760 croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname); 821 croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
761} 822 \
823 } while(0)
824
825#define SvSTATE(sv) (struct coro *)SvIV (sv)
762 826
763static void 827static void
764api_transfer(pTHX_ SV *prev, SV *next, int flags) 828api_transfer(pTHX_ SV *prev, SV *next, int flags)
765{ 829{
766 transfer(aTHX_ sv_to_coro (prev, "Coro::transfer", "prev"), 830 SV_CORO (prev, "Coro::transfer");
767 sv_to_coro (next, "Coro::transfer", "next"), 831 SV_CORO (next, "Coro::transfer");
768 flags); 832
833 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
769} 834}
770 835
771/** Coro ********************************************************************/ 836/** Coro ********************************************************************/
772 837
773#define PRIO_MAX 3 838#define PRIO_MAX 3
781static GV *coro_current, *coro_idle; 846static GV *coro_current, *coro_idle;
782static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; 847static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
783static int coro_nready; 848static int coro_nready;
784 849
785static void 850static void
786coro_enq (SV *sv) 851coro_enq (pTHX_ SV *sv)
787{ 852{
788 if (SvROK (sv)) 853 if (SvTYPE (sv) == SVt_PVHV)
789 { 854 {
790 SV *hv = SvRV (sv);
791 if (SvTYPE (hv) == SVt_PVHV)
792 {
793 SV **xprio = hv_fetch ((HV *)hv, "prio", 4, 0); 855 SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
794 int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; 856 int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
795 857
796 prio = prio > PRIO_MAX ? PRIO_MAX 858 prio = prio > PRIO_MAX ? PRIO_MAX
797 : prio < PRIO_MIN ? PRIO_MIN 859 : prio < PRIO_MIN ? PRIO_MIN
798 : prio; 860 : prio;
799 861
800 av_push (coro_ready [prio - PRIO_MIN], sv); 862 av_push (coro_ready [prio - PRIO_MIN], sv);
801 coro_nready++; 863 coro_nready++;
802 864
803 return; 865 return;
804 }
805 } 866 }
806 867
807 croak ("Coro::ready tried to enqueue something that is not a coroutine"); 868 croak ("Coro::ready tried to enqueue something that is not a coroutine");
808} 869}
809 870
810static SV * 871static SV *
811coro_deq (int min_prio) 872coro_deq (pTHX_ int min_prio)
812{ 873{
813 int prio = PRIO_MAX - PRIO_MIN; 874 int prio = PRIO_MAX - PRIO_MIN;
814 875
815 min_prio -= PRIO_MIN; 876 min_prio -= PRIO_MIN;
816 if (min_prio < 0) 877 if (min_prio < 0)
827} 888}
828 889
829static void 890static void
830api_ready (SV *coro) 891api_ready (SV *coro)
831{ 892{
893 dTHX;
894
895 if (SvROK (coro))
896 coro = SvRV (coro);
897
898 LOCK;
832 coro_enq (SvREFCNT_inc (coro)); 899 coro_enq (aTHX_ SvREFCNT_inc (coro));
900 UNLOCK;
833} 901}
834 902
835static void 903static void
836api_schedule (int cede) 904api_schedule (void)
837{ 905{
906 dTHX;
907
838 SV *prev, *next; 908 SV *prev, *next;
839 909
910 LOCK;
911
840 prev = GvSV (coro_current); 912 prev = SvRV (GvSV (coro_current));
841
842 if (cede)
843 coro_enq (SvREFCNT_inc (prev));
844
845 next = coro_deq (PRIO_MIN); 913 next = coro_deq (aTHX_ PRIO_MIN);
846 914
847 if (!next) 915 if (!next)
848 next = SvREFCNT_inc (GvSV (coro_idle)); 916 next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
849 917
850 GvSV (coro_current) = SvREFCNT_inc (next); 918 /* free this only after the transfer */
851 transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"), 919 coro_mortal = prev;
852 sv_to_coro (next, "Coro::schedule", "next coroutine"), 920 SV_CORO (prev, "Coro::schedule");
921
922 SvRV (GvSV (coro_current)) = next;
923
924 SV_CORO (next, "Coro::schedule");
925
926 UNLOCK;
927
928 transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
853 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); 929 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK);
854 SvREFCNT_dec (next); 930}
855 SvREFCNT_dec (prev); 931
932static void
933api_cede (void)
934{
935 dTHX;
936
937 LOCK;
938 coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
939 UNLOCK;
940
941 api_schedule ();
856} 942}
857 943
858MODULE = Coro::State PACKAGE = Coro::State 944MODULE = Coro::State PACKAGE = Coro::State
859 945
860PROTOTYPES: ENABLE 946PROTOTYPES: ENABLE
861 947
862BOOT: 948BOOT:
863{ /* {} necessary for stoopid perl-5.6.x */ 949{ /* {} necessary for stoopid perl-5.6.x */
950#ifdef USE_ITHREADS
951 MUTEX_INIT (&coro_mutex);
952#endif
953
864 ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); 954 ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
865 PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); 955 PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
866 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 956 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
867 957
868 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 958 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
869 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 959 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
870 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 960 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
871 newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); 961 newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
872 962
873 if (!padlist_cache)
874 padlist_cache = newHV ();
875
876 main_mainstack = PL_mainstack; 963 main_mainstack = PL_mainstack;
877 964
878 {
879 SV *sv = perl_get_sv("Coro::API", 1);
880
881 coroapi.ver = CORO_API_VERSION - 1; 965 coroapi.ver = CORO_API_VERSION;
882 coroapi.transfer = api_transfer; 966 coroapi.transfer = api_transfer;
883 coroapi.schedule = api_schedule;
884 coroapi.ready = api_ready;
885 coroapi.nready = &coro_nready;
886
887 GCoroAPI = &coroapi;
888 sv_setiv(sv, (IV)&coroapi);
889 SvREADONLY_on(sv);
890 }
891} 967}
892 968
893Coro::State 969Coro::State
894_newprocess(args) 970_newprocess(args)
895 SV * args 971 SV * args
898 Coro__State coro; 974 Coro__State coro;
899 975
900 if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) 976 if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV)
901 croak ("Coro::State::_newprocess expects an arrayref"); 977 croak ("Coro::State::_newprocess expects an arrayref");
902 978
903 New (0, coro, 1, struct coro); 979 Newz (0, coro, 1, struct coro);
904 980
905 coro->args = (AV *)SvREFCNT_inc (SvRV (args)); 981 coro->args = (AV *)SvREFCNT_inc (SvRV (args));
906 coro->mainstack = 0; /* actual work is done inside transfer */ 982 coro->mainstack = 0; /* actual work is done inside transfer */
907 coro->stack = 0; 983 coro->stack = 0;
908 984
985 /* same as JMPENV_BOOTSTRAP */
986 /* we might be able to recycle start_env, but safe is safe */
987 //Zero(&coro->start_env, 1, JMPENV);
988 coro->start_env.je_ret = -1;
989 coro->start_env.je_mustcatch = TRUE;
990
909 RETVAL = coro; 991 RETVAL = coro;
910 OUTPUT: 992 OUTPUT:
911 RETVAL 993 RETVAL
912 994
913void 995void
914transfer(prev, next, flags) 996transfer(prev, next, flags)
915 Coro::State_or_hashref prev 997 SV *prev
916 Coro::State_or_hashref next 998 SV *next
917 int flags 999 int flags
918 PROTOTYPE: @ 1000 PROTOTYPE: @
919 CODE: 1001 CODE:
920 PUTBACK; 1002 PUTBACK;
1003 SV_CORO (next, "Coro::transfer");
1004 SV_CORO (prev, "Coro::transfer");
921 transfer (aTHX_ prev, next, flags); 1005 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
922 SPAGAIN; 1006 SPAGAIN;
923 1007
924void 1008void
925DESTROY(coro) 1009DESTROY(coro)
926 Coro::State coro 1010 Coro::State coro
928 1012
929 if (coro->mainstack && coro->mainstack != main_mainstack) 1013 if (coro->mainstack && coro->mainstack != main_mainstack)
930 { 1014 {
931 struct coro temp; 1015 struct coro temp;
932 1016
1017 PUTBACK;
933 SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); 1018 SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL);
934 LOAD(aTHX_ coro); 1019 LOAD(aTHX_ coro);
1020 SPAGAIN;
935 1021
936 destroy_stacks (aTHX); 1022 destroy_stacks (aTHX);
937 1023
938 LOAD((&temp)); /* this will get rid of defsv etc.. */ 1024 LOAD((&temp)); /* this will get rid of defsv etc.. */
1025 SPAGAIN;
939 1026
940 coro->mainstack = 0; 1027 coro->mainstack = 0;
941 } 1028 }
942 1029
943 deallocate_stack (coro); 1030 deallocate_stack (coro);
944 1031 SvREFCNT_dec (coro->args);
945 Safefree (coro); 1032 Safefree (coro);
946
947void
948flush()
949 CODE:
950#ifdef MAY_FLUSH
951 flush_padlist_cache ();
952#endif
953 1033
954void 1034void
955_exit(code) 1035_exit(code)
956 int code 1036 int code
957 PROTOTYPE: $ 1037 PROTOTYPE: $
958 CODE: 1038 CODE:
959#if defined(__GLIBC__) || _POSIX_C_SOURCE
960 _exit (code); 1039 _exit (code);
961#else
962 signal (SIGTERM, SIG_DFL);
963 raise (SIGTERM);
964 exit (code);
965#endif
966 1040
967MODULE = Coro::State PACKAGE = Coro::Cont 1041MODULE = Coro::State PACKAGE = Coro::Cont
968 1042
969# this is slightly dirty (should expose a c-level api) 1043# this is slightly dirty (should expose a c-level api)
970 1044
976 SV *sv; 1050 SV *sv;
977 AV *defav = GvAV (PL_defgv); 1051 AV *defav = GvAV (PL_defgv);
978 struct coro *prev, *next; 1052 struct coro *prev, *next;
979 1053
980 if (!returnstk) 1054 if (!returnstk)
981 returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); 1055 returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
982 1056
983 /* set up @_ -- ugly */ 1057 /* set up @_ -- ugly */
984 av_clear (defav); 1058 av_clear (defav);
985 av_fill (defav, items - 1); 1059 av_fill (defav, items - 1);
986 while (items--) 1060 while (items--)
1013 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); 1087 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1014 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); 1088 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1015 1089
1016 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1090 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1017 coro_ready[i] = newAV (); 1091 coro_ready[i] = newAV ();
1092
1093 {
1094 SV *sv = perl_get_sv("Coro::API", 1);
1095
1096 coroapi.schedule = api_schedule;
1097 coroapi.cede = api_cede;
1098 coroapi.ready = api_ready;
1099 coroapi.nready = &coro_nready;
1100 coroapi.current = coro_current;
1101
1102 GCoroAPI = &coroapi;
1103 sv_setiv(sv, (IV)&coroapi);
1104 SvREADONLY_on(sv);
1105 }
1018} 1106}
1107
1108#if !PERL_MICRO
1019 1109
1020void 1110void
1021ready(self) 1111ready(self)
1022 SV * self 1112 SV * self
1113 PROTOTYPE: $
1023 CODE: 1114 CODE:
1024 api_ready (self); 1115 api_ready (self);
1116
1117#endif
1025 1118
1026int 1119int
1027nready(...) 1120nready(...)
1028 PROTOTYPE: 1121 PROTOTYPE:
1029 CODE: 1122 CODE:
1032 RETVAL 1125 RETVAL
1033 1126
1034void 1127void
1035schedule(...) 1128schedule(...)
1036 PROTOTYPE: 1129 PROTOTYPE:
1037 ALIAS:
1038 cede = 1
1039 CODE: 1130 CODE:
1040 api_schedule (ix); 1131 api_schedule ();
1041 1132
1133void
1134cede(...)
1135 PROTOTYPE:
1136 CODE:
1137 api_cede ();
1138

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