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Comparing Coro/Coro/State.xs (file contents):
Revision 1.44 by root, Sat Mar 22 18:50:32 2003 UTC vs.
Revision 1.70 by root, Mon Dec 26 19:26:52 2005 UTC

1#define PERL_NO_GET_CONTEXT
2
3#include "libcoro/coro.c"
4
1#include "EXTERN.h" 5#include "EXTERN.h"
2#include "perl.h" 6#include "perl.h"
3#include "XSUB.h" 7#include "XSUB.h"
4 8
5#include "libcoro/coro.c" 9#include "patchlevel.h"
6 10
11#if PERL_VERSION < 6
12# ifndef PL_ppaddr
13# define PL_ppaddr ppaddr
14# endif
15# ifndef call_sv
16# define call_sv perl_call_sv
17# endif
18# ifndef get_sv
19# define get_sv perl_get_sv
20# endif
21# ifndef get_cv
22# define get_cv perl_get_cv
23# endif
24# ifndef IS_PADGV
25# define IS_PADGV(v) 0
26# endif
27# ifndef IS_PADCONST
28# define IS_PADCONST(v) 0
29# endif
30#endif
31
32#include <errno.h>
7#include <signal.h> 33#include <signal.h>
8 34
9#ifdef HAVE_MMAP 35#ifdef HAVE_MMAP
10# include <unistd.h> 36# include <unistd.h>
11# include <sys/mman.h> 37# include <sys/mman.h>
16# undef HAVE_MMAP 42# undef HAVE_MMAP
17# endif 43# endif
18# endif 44# endif
19#endif 45#endif
20 46
21#define MAY_FLUSH /* increases codesize and is rarely used */
22
23#define SUB_INIT "Coro::State::initialize" 47#define SUB_INIT "Coro::State::initialize"
24#define UCORO_STATE "_coro_state" 48#define UCORO_STATE "_coro_state"
25 49
26/* The next macro should declare a variable stacklevel that contains and approximation 50/* 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 51 * to the current C stack pointer. Its property is that it changes with each call
32 56
33#define labs(l) ((l) >= 0 ? (l) : -(l)) 57#define labs(l) ((l) >= 0 ? (l) : -(l))
34 58
35#include "CoroAPI.h" 59#include "CoroAPI.h"
36 60
61#ifdef USE_ITHREADS
62static perl_mutex coro_mutex;
63# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
64# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
65#else
66# define LOCK (void)0
67# define UNLOCK (void)0
68#endif
69
37static struct CoroAPI coroapi; 70static struct CoroAPI coroapi;
71static AV *main_mainstack; /* used to differentiate between $main and others */
72static HV *coro_state_stash;
73static SV *ucoro_state_sv;
74static U32 ucoro_state_hash;
75static SV *coro_mortal; /* will be freed after next transfer */
38 76
39/* this is actually not only the c stack but also c registers etc... */ 77/* this is actually not only the c stack but also c registers etc... */
40typedef struct { 78typedef struct {
41 int refcnt; /* pointer reference counter */ 79 int refcnt; /* pointer reference counter */
42 int usecnt; /* shared by how many coroutines */ 80 int usecnt; /* shared by how many coroutines */
47 void *sptr; 85 void *sptr;
48 long ssize; /* positive == mmap, otherwise malloc */ 86 long ssize; /* positive == mmap, otherwise malloc */
49} coro_stack; 87} coro_stack;
50 88
51struct coro { 89struct coro {
90 /* the top-level JMPENV for each coroutine, needed to catch dies. */
91 JMPENV start_env;
92
52 /* the optional C context */ 93 /* the optional C context */
53 coro_stack *stack; 94 coro_stack *stack;
54 void *cursp; 95 void *cursp;
55 int gencnt; 96 int gencnt;
56 97
69 AV *mainstack; 110 AV *mainstack;
70 SV **stack_sp; 111 SV **stack_sp;
71 OP *op; 112 OP *op;
72 SV **curpad; 113 SV **curpad;
73 AV *comppad; 114 AV *comppad;
115 CV *compcv;
74 SV **stack_base; 116 SV **stack_base;
75 SV **stack_max; 117 SV **stack_max;
76 SV **tmps_stack; 118 SV **tmps_stack;
77 I32 tmps_floor; 119 I32 tmps_floor;
78 I32 tmps_ix; 120 I32 tmps_ix;
87 I32 savestack_ix; 129 I32 savestack_ix;
88 I32 savestack_max; 130 I32 savestack_max;
89 OP **retstack; 131 OP **retstack;
90 I32 retstack_ix; 132 I32 retstack_ix;
91 I32 retstack_max; 133 I32 retstack_max;
134 PMOP *curpm;
92 COP *curcop; 135 COP *curcop;
93 JMPENV *top_env; 136 JMPENV *top_env;
94 137
95 /* data associated with this coroutine (initial args) */ 138 /* data associated with this coroutine (initial args) */
96 AV *args; 139 AV *args;
97}; 140};
98 141
99typedef struct coro *Coro__State; 142typedef struct coro *Coro__State;
100typedef struct coro *Coro__State_or_hashref; 143typedef struct coro *Coro__State_or_hashref;
101 144
102static AV *main_mainstack; /* used to differentiate between $main and others */
103static HV *coro_state_stash;
104static SV *ucoro_state_sv;
105static U32 ucoro_state_hash;
106static HV *padlist_cache;
107static SV *coro_mortal; /* will be freed after next transfer */
108
109/* mostly copied from op.c:cv_clone2 */ 145/* mostly copied from op.c:cv_clone2 */
110STATIC AV * 146STATIC AV *
111clone_padlist (AV *protopadlist) 147clone_padlist (pTHX_ AV *protopadlist)
112{ 148{
113 AV *av; 149 AV *av;
114 I32 ix; 150 I32 ix;
115 AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); 151 AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE);
116 AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); 152 AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE);
140 AvFLAGS (av) = AVf_REIFY; 176 AvFLAGS (av) = AVf_REIFY;
141 177
142 for (ix = fpad; ix > 0; ix--) 178 for (ix = fpad; ix > 0; ix--)
143 { 179 {
144 SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; 180 SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
181
145 if (namesv && namesv != &PL_sv_undef) 182 if (namesv && namesv != &PL_sv_undef)
146 { 183 {
147 char *name = SvPVX (namesv); /* XXX */ 184 char *name = SvPVX (namesv); /* XXX */
185
148 if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') 186 if (SvFLAGS (namesv) & SVf_FAKE || *name == '&')
149 { /* lexical from outside? */ 187 { /* lexical from outside? */
150 npad[ix] = SvREFCNT_inc (ppad[ix]); 188 npad[ix] = SvREFCNT_inc (ppad[ix]);
151 } 189 }
152 else 190 else
158 sv = (SV *) newAV (); 196 sv = (SV *) newAV ();
159 else if (*name == '%') 197 else if (*name == '%')
160 sv = (SV *) newHV (); 198 sv = (SV *) newHV ();
161 else 199 else
162 sv = NEWSV (0, 0); 200 sv = NEWSV (0, 0);
201
202#ifdef SvPADBUSY
163 if (!SvPADBUSY (sv)) 203 if (!SvPADBUSY (sv))
204#endif
164 SvPADMY_on (sv); 205 SvPADMY_on (sv);
206
165 npad[ix] = sv; 207 npad[ix] = sv;
166 } 208 }
167 } 209 }
168 else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) 210 else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix]))
169 { 211 {
198#endif 240#endif
199 241
200 return newpadlist; 242 return newpadlist;
201} 243}
202 244
203#ifdef MAY_FLUSH
204STATIC void 245STATIC void
205free_padlist (AV *padlist) 246free_padlist (pTHX_ AV *padlist)
206{ 247{
207 /* may be during global destruction */ 248 /* may be during global destruction */
208 if (SvREFCNT(padlist)) 249 if (SvREFCNT (padlist))
209 { 250 {
210 I32 i = AvFILLp(padlist); 251 I32 i = AvFILLp (padlist);
211 while (i >= 0) 252 while (i >= 0)
212 { 253 {
213 SV **svp = av_fetch(padlist, i--, FALSE); 254 SV **svp = av_fetch (padlist, i--, FALSE);
214 SV *sv = svp ? *svp : Nullsv;
215 if (sv) 255 if (svp)
256 {
257 SV *sv;
258 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp)))
216 SvREFCNT_dec(sv); 259 SvREFCNT_dec (sv);
260
261 SvREFCNT_dec (*svp);
262 }
217 } 263 }
218 264
219 SvREFCNT_dec((SV*)padlist); 265 SvREFCNT_dec ((SV*)padlist);
220 } 266 }
221} 267}
222#endif 268
269STATIC int
270coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
271{
272 AV *padlist;
273 AV *av = (AV *)mg->mg_obj;
274
275 /* casting is fun. */
276 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
277 free_padlist (aTHX_ padlist);
278
279 SvREFCNT_dec (av);
280}
281
282#define PERL_MAGIC_coro PERL_MAGIC_ext
283
284static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
223 285
224/* the next two functions merely cache the padlists */ 286/* the next two functions merely cache the padlists */
225STATIC void 287STATIC void
226get_padlist (CV *cv) 288get_padlist (pTHX_ CV *cv)
227{ 289{
228 SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); 290 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
229 291
230 if (he && AvFILLp ((AV *)*he) >= 0) 292 if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
231 CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); 293 CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj);
232 else 294 else
233 CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); 295 CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv));
234} 296}
235 297
236STATIC void 298STATIC void
237put_padlist (CV *cv) 299put_padlist (pTHX_ CV *cv)
238{ 300{
239 SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); 301 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
240 302
241 if (SvTYPE (*he) != SVt_PVAV) 303 if (!mg)
242 { 304 {
243 SvREFCNT_dec (*he); 305 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
306 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
307 mg->mg_virtual = &vtbl_coro;
244 *he = (SV *)newAV (); 308 mg->mg_obj = (SV *)newAV ();
245 } 309 }
246 310
247 av_push ((AV *)*he, (SV *)CvPADLIST (cv)); 311 av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv));
248} 312}
249
250#ifdef MAY_FLUSH
251STATIC void
252flush_padlist_cache ()
253{
254 HV *hv = padlist_cache;
255 padlist_cache = newHV ();
256
257 if (hv_iterinit (hv))
258 {
259 HE *he;
260 AV *padlist;
261
262 while (!!(he = hv_iternext (hv)))
263 {
264 AV *av = (AV *)HeVAL(he);
265
266 /* casting is fun. */
267 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
268 free_padlist (padlist);
269 }
270 }
271
272 SvREFCNT_dec (hv);
273}
274#endif
275 313
276#define SB do { 314#define SB do {
277#define SE } while (0) 315#define SE } while (0)
278 316
279#define LOAD(state) load_state(aTHX_ (state)); 317#define LOAD(state) load_state(aTHX_ (state));
280#define SAVE(state,flags) save_state(aTHX_ (state),(flags)); 318#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
281 319
282#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE 320#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
283 321
284static void 322static void
285load_state(pTHX_ Coro__State c) 323load_state(pTHX_ Coro__State c)
286{ 324{
287 PL_dowarn = c->dowarn; 325 PL_dowarn = c->dowarn;
292 PL_mainstack = c->mainstack; 330 PL_mainstack = c->mainstack;
293 PL_stack_sp = c->stack_sp; 331 PL_stack_sp = c->stack_sp;
294 PL_op = c->op; 332 PL_op = c->op;
295 PL_curpad = c->curpad; 333 PL_curpad = c->curpad;
296 PL_comppad = c->comppad; 334 PL_comppad = c->comppad;
335 PL_compcv = c->compcv;
297 PL_stack_base = c->stack_base; 336 PL_stack_base = c->stack_base;
298 PL_stack_max = c->stack_max; 337 PL_stack_max = c->stack_max;
299 PL_tmps_stack = c->tmps_stack; 338 PL_tmps_stack = c->tmps_stack;
300 PL_tmps_floor = c->tmps_floor; 339 PL_tmps_floor = c->tmps_floor;
301 PL_tmps_ix = c->tmps_ix; 340 PL_tmps_ix = c->tmps_ix;
310 PL_savestack_ix = c->savestack_ix; 349 PL_savestack_ix = c->savestack_ix;
311 PL_savestack_max = c->savestack_max; 350 PL_savestack_max = c->savestack_max;
312 PL_retstack = c->retstack; 351 PL_retstack = c->retstack;
313 PL_retstack_ix = c->retstack_ix; 352 PL_retstack_ix = c->retstack_ix;
314 PL_retstack_max = c->retstack_max; 353 PL_retstack_max = c->retstack_max;
354 PL_curpm = c->curpm;
315 PL_curcop = c->curcop; 355 PL_curcop = c->curcop;
316 PL_top_env = c->top_env; 356 PL_top_env = c->top_env;
317 357
318 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 358 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 359 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
328 { 368 {
329 AV *padlist = (AV *)POPs; 369 AV *padlist = (AV *)POPs;
330 370
331 if (padlist) 371 if (padlist)
332 { 372 {
333 put_padlist (cv); /* mark this padlist as available */ 373 put_padlist (aTHX_ cv); /* mark this padlist as available */
334 CvPADLIST(cv) = padlist; 374 CvPADLIST(cv) = padlist;
335#ifdef USE_THREADS
336 /*CvOWNER(cv) = (struct perl_thread *)POPs;*/
337#endif
338 } 375 }
339 376
340 ++CvDEPTH(cv); 377 ++CvDEPTH(cv);
341 } 378 }
342 379
369 if (CxTYPE(cx) == CXt_SUB) 406 if (CxTYPE(cx) == CXt_SUB)
370 { 407 {
371 CV *cv = cx->blk_sub.cv; 408 CV *cv = cx->blk_sub.cv;
372 if (CvDEPTH(cv)) 409 if (CvDEPTH(cv))
373 { 410 {
374#ifdef USE_THREADS
375 /*XPUSHs ((SV *)CvOWNER(cv));*/
376 /*CvOWNER(cv) = 0;*/
377 /*error must unlock this cv etc.. etc...*/
378#endif
379 EXTEND (SP, CvDEPTH(cv)*2); 411 EXTEND (SP, CvDEPTH(cv)*2);
380 412
381 while (--CvDEPTH(cv)) 413 while (--CvDEPTH(cv))
382 { 414 {
383 /* this tells the restore code to increment CvDEPTH */ 415 /* this tells the restore code to increment CvDEPTH */
386 } 418 }
387 419
388 PUSHs ((SV *)CvPADLIST(cv)); 420 PUSHs ((SV *)CvPADLIST(cv));
389 PUSHs ((SV *)cv); 421 PUSHs ((SV *)cv);
390 422
391 get_padlist (cv); /* this is a monster */ 423 get_padlist (aTHX_ cv); /* this is a monster */
392 } 424 }
393 } 425 }
426#ifdef CXt_FORMAT
394 else if (CxTYPE(cx) == CXt_FORMAT) 427 else if (CxTYPE(cx) == CXt_FORMAT)
395 { 428 {
396 /* I never used formats, so how should I know how these are implemented? */ 429 /* I never used formats, so how should I know how these are implemented? */
397 /* my bold guess is as a simple, plain sub... */ 430 /* my bold guess is as a simple, plain sub... */
398 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); 431 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
399 } 432 }
433#endif
400 } 434 }
401 435
402 if (top_si->si_type == PERLSI_MAIN) 436 if (top_si->si_type == PERLSI_MAIN)
403 break; 437 break;
404 438
422 c->mainstack = PL_mainstack; 456 c->mainstack = PL_mainstack;
423 c->stack_sp = PL_stack_sp; 457 c->stack_sp = PL_stack_sp;
424 c->op = PL_op; 458 c->op = PL_op;
425 c->curpad = PL_curpad; 459 c->curpad = PL_curpad;
426 c->comppad = PL_comppad; 460 c->comppad = PL_comppad;
461 c->compcv = PL_compcv;
427 c->stack_base = PL_stack_base; 462 c->stack_base = PL_stack_base;
428 c->stack_max = PL_stack_max; 463 c->stack_max = PL_stack_max;
429 c->tmps_stack = PL_tmps_stack; 464 c->tmps_stack = PL_tmps_stack;
430 c->tmps_floor = PL_tmps_floor; 465 c->tmps_floor = PL_tmps_floor;
431 c->tmps_ix = PL_tmps_ix; 466 c->tmps_ix = PL_tmps_ix;
440 c->savestack_ix = PL_savestack_ix; 475 c->savestack_ix = PL_savestack_ix;
441 c->savestack_max = PL_savestack_max; 476 c->savestack_max = PL_savestack_max;
442 c->retstack = PL_retstack; 477 c->retstack = PL_retstack;
443 c->retstack_ix = PL_retstack_ix; 478 c->retstack_ix = PL_retstack_ix;
444 c->retstack_max = PL_retstack_max; 479 c->retstack_max = PL_retstack_max;
480 c->curpm = PL_curpm;
445 c->curcop = PL_curcop; 481 c->curcop = PL_curcop;
446 c->top_env = PL_top_env; 482 c->top_env = PL_top_env;
447} 483}
448 484
449/* 485/*
450 * allocate various perl stacks. This is an exact copy 486 * allocate various perl stacks. This is an exact copy
451 * of perl.c:init_stacks, except that it uses less memory 487 * of perl.c:init_stacks, except that it uses less memory
452 * on the assumption that coroutines do not usually need 488 * on the (sometimes correct) assumption that coroutines do
453 * a lot of stackspace. 489 * not usually need a lot of stackspace.
454 */ 490 */
455STATIC void 491STATIC void
456coro_init_stacks (pTHX) 492coro_init_stacks (pTHX)
457{ 493{
494 LOCK;
495
458 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); 496 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
459 PL_curstackinfo->si_type = PERLSI_MAIN; 497 PL_curstackinfo->si_type = PERLSI_MAIN;
460 PL_curstack = PL_curstackinfo->si_stack; 498 PL_curstack = PL_curstackinfo->si_stack;
461 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 499 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
462 500
471 509
472 New(54,PL_markstack,16,I32); 510 New(54,PL_markstack,16,I32);
473 PL_markstack_ptr = PL_markstack; 511 PL_markstack_ptr = PL_markstack;
474 PL_markstack_max = PL_markstack + 16; 512 PL_markstack_max = PL_markstack + 16;
475 513
514#ifdef SET_MARK_OFFSET
476 SET_MARK_OFFSET; 515 SET_MARK_OFFSET;
516#endif
477 517
478 New(54,PL_scopestack,16,I32); 518 New(54,PL_scopestack,16,I32);
479 PL_scopestack_ix = 0; 519 PL_scopestack_ix = 0;
480 PL_scopestack_max = 16; 520 PL_scopestack_max = 16;
481 521
484 PL_savestack_max = 96; 524 PL_savestack_max = 96;
485 525
486 New(54,PL_retstack,8,OP*); 526 New(54,PL_retstack,8,OP*);
487 PL_retstack_ix = 0; 527 PL_retstack_ix = 0;
488 PL_retstack_max = 8; 528 PL_retstack_max = 8;
529
530 UNLOCK;
489} 531}
490 532
491/* 533/*
492 * destroy the stacks, the callchain etc... 534 * destroy the stacks, the callchain etc...
493 * still there is a memleak of 128 bytes...
494 */ 535 */
495STATIC void 536STATIC void
496destroy_stacks(pTHX) 537destroy_stacks(pTHX)
497{ 538{
498 if (!IN_DESTRUCT) 539 if (!IN_DESTRUCT)
499 { 540 {
500 /* is this ugly, I ask? */ 541 /* is this ugly, I ask? */
501 while (PL_scopestack_ix) 542 LEAVE_SCOPE (0);
502 LEAVE;
503 543
504 /* sure it is, but more important: is it correct?? :/ */ 544 /* sure it is, but more important: is it correct?? :/ */
505 while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */
506 FREETMPS; 545 FREETMPS;
546
547 /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
507 } 548 }
508 549
509 while (PL_curstackinfo->si_next) 550 while (PL_curstackinfo->si_next)
510 PL_curstackinfo = PL_curstackinfo->si_next; 551 PL_curstackinfo = PL_curstackinfo->si_next;
511 552
512 while (PL_curstackinfo) 553 while (PL_curstackinfo)
513 { 554 {
514 PERL_SI *p = PL_curstackinfo->si_prev; 555 PERL_SI *p = PL_curstackinfo->si_prev;
515 556
516 { 557 { /*D*//*remove*/
517 dSP; 558 dSP;
518 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); 559 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
519 PUTBACK; /* possibly superfluous */ 560 PUTBACK; /* possibly superfluous */
520 } 561 }
521 562
522 if (!IN_DESTRUCT) 563 if (!IN_DESTRUCT)
523 { 564 {
524 dounwind(-1); 565 dounwind (-1);/*D*//*remove*/
525 SvREFCNT_dec(PL_curstackinfo->si_stack); 566 SvREFCNT_dec (PL_curstackinfo->si_stack);
526 } 567 }
527 568
528 Safefree(PL_curstackinfo->si_cxstack); 569 Safefree (PL_curstackinfo->si_cxstack);
529 Safefree(PL_curstackinfo); 570 Safefree (PL_curstackinfo);
530 PL_curstackinfo = p; 571 PL_curstackinfo = p;
531 } 572 }
532 573
533 Safefree(PL_tmps_stack); 574 Safefree (PL_tmps_stack);
534 Safefree(PL_markstack); 575 Safefree (PL_markstack);
535 Safefree(PL_scopestack); 576 Safefree (PL_scopestack);
536 Safefree(PL_savestack); 577 Safefree (PL_savestack);
537 Safefree(PL_retstack); 578 Safefree (PL_retstack);
538} 579}
539 580
540static void 581static void
541allocate_stack (Coro__State ctx, int alloc) 582allocate_stack (Coro__State ctx, int alloc)
542{ 583{
545 New (0, stack, 1, coro_stack); 586 New (0, stack, 1, coro_stack);
546 587
547 stack->refcnt = 1; 588 stack->refcnt = 1;
548 stack->usecnt = 1; 589 stack->usecnt = 1;
549 stack->gencnt = ctx->gencnt = 0; 590 stack->gencnt = ctx->gencnt = 0;
591
550 if (alloc) 592 if (alloc)
551 { 593 {
552#if HAVE_MMAP 594#if HAVE_MMAP
553 stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ 595 stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */
554 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 596 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
555 if (stack->sptr == (void *)-1) 597 if (stack->sptr == (void *)-1)
556#endif 598#endif
557 { 599 {
558 /*FIXME*//*D*//* reasonable stack size! */ 600 /*FIXME*//*D*//* reasonable stack size! */
559 stack->ssize = -4096 * sizeof (long); 601 stack->ssize = - (STACKSIZE * sizeof (long));
560 New (0, stack->sptr, 4096, long); 602 New (0, stack->sptr, STACKSIZE, long);
561 } 603 }
562 } 604 }
563 else 605 else
564 stack->sptr = 0; 606 stack->sptr = 0;
565 607
579 { 621 {
580#ifdef HAVE_MMAP 622#ifdef HAVE_MMAP
581 if (stack->ssize > 0 && stack->sptr) 623 if (stack->ssize > 0 && stack->sptr)
582 munmap (stack->sptr, stack->ssize); 624 munmap (stack->sptr, stack->ssize);
583 else 625 else
584#else 626#endif
585 Safefree (stack->sptr); 627 Safefree (stack->sptr);
586#endif 628
587 Safefree (stack); 629 Safefree (stack);
588 } 630 }
589 else if (ctx->gencnt == stack->gencnt) 631 else if (ctx->gencnt == stack->gencnt)
590 --stack->usecnt; 632 --stack->usecnt;
591 } 633 }
595setup_coro (void *arg) 637setup_coro (void *arg)
596{ 638{
597 /* 639 /*
598 * emulate part of the perl startup here. 640 * emulate part of the perl startup here.
599 */ 641 */
642 dTHX;
600 dSP; 643 dSP;
601 Coro__State ctx = (Coro__State)arg; 644 Coro__State ctx = (Coro__State)arg;
602 SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); 645 SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE);
603 646
604 coro_init_stacks (aTHX); 647 coro_init_stacks (aTHX);
605 /*PL_curcop = 0;*/ 648 /*PL_curcop = 0;*/
606 /*PL_in_eval = PL_in_eval;*/ /* inherit */ 649 /*PL_in_eval = PL_in_eval;*/ /* inherit */
607 SvREFCNT_dec (GvAV (PL_defgv)); 650 SvREFCNT_dec (GvAV (PL_defgv));
608 GvAV (PL_defgv) = ctx->args; 651 GvAV (PL_defgv) = ctx->args; ctx->args = 0;
609 652
610 SPAGAIN; 653 SPAGAIN;
611 654
612 if (ctx->stack) 655 if (ctx->stack)
613 { 656 {
653continue_coro (void *arg) 696continue_coro (void *arg)
654{ 697{
655 /* 698 /*
656 * this is a _very_ stripped down perl interpreter ;) 699 * this is a _very_ stripped down perl interpreter ;)
657 */ 700 */
701 dTHX;
658 Coro__State ctx = (Coro__State)arg; 702 Coro__State ctx = (Coro__State)arg;
659 JMPENV coro_start_env; 703 JMPENV coro_start_env;
660 704
661 /* same as JMPENV_BOOTSTRAP */
662 Zero(&coro_start_env, 1, JMPENV);
663 coro_start_env.je_ret = -1;
664 coro_start_env.je_mustcatch = TRUE;
665 PL_top_env = &coro_start_env; 705 PL_top_env = &ctx->start_env;
666 706
667 ctx->cursp = 0; 707 ctx->cursp = 0;
668 PL_op = PL_op->op_next; 708 PL_op = PL_op->op_next;
669 CALLRUNOPS(aTHX); 709 CALLRUNOPS(aTHX);
670 710
671 abort (); 711 abort ();
672} 712}
673 713
674STATIC void 714STATIC void
675transfer(pTHX_ struct coro *prev, struct coro *next, int flags) 715transfer (pTHX_ struct coro *prev, struct coro *next, int flags)
676{ 716{
677 dSTACKLEVEL; 717 dSTACKLEVEL;
678 static struct coro *xnext;
679 718
680 if (prev != next) 719 if (prev != next)
681 { 720 {
682 xnext = next;
683
684 if (next->mainstack) 721 if (next->mainstack)
685 { 722 {
723 LOCK;
686 SAVE (prev, flags); 724 SAVE (prev, flags);
687 LOAD (next); 725 LOAD (next);
726 UNLOCK;
688 727
689 /* mark this state as in-use */ 728 /* mark this state as in-use */
690 next->mainstack = 0; 729 next->mainstack = 0;
691 next->tmps_ix = -2; 730 next->tmps_ix = -2;
692 731
711 continue_coro, (void *)next, 750 continue_coro, (void *)next,
712 next->stack->sptr, labs (next->stack->ssize)); 751 next->stack->sptr, labs (next->stack->ssize));
713 } 752 }
714 753
715 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); 754 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
755 prev->cursp = stacklevel;
716 /* don't add any code here */ 756 /* don't add any code here */
717 } 757 }
718 758 else
759 next->cursp = stacklevel;
719 } 760 }
720 else if (next->tmps_ix == -2) 761 else if (next->tmps_ix == -2)
721 croak ("tried to transfer to running coroutine"); 762 croak ("tried to transfer to running coroutine");
722 else 763 else
723 { 764 {
765 LOCK;
724 SAVE (prev, -1); /* first get rid of the old state */ 766 SAVE (prev, -1); /* first get rid of the old state */
767 UNLOCK;
725 768
726 if (flags & TRANSFER_SAVE_CCTXT) 769 if (flags & TRANSFER_SAVE_CCTXT)
727 { 770 {
728 if (!prev->stack) 771 if (!prev->stack)
729 allocate_stack (prev, 0); 772 allocate_stack (prev, 0);
730 773
731 if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) 774 if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
732 { 775 {
776 PL_top_env = &next->start_env;
777
733 setup_coro (next); 778 setup_coro (next);
779 next->cursp = stacklevel;
734 780
735 prev->stack->refcnt++; 781 prev->stack->refcnt++;
736 prev->stack->usecnt++; 782 prev->stack->usecnt++;
737 next->stack = prev->stack; 783 next->stack = prev->stack;
738 next->gencnt = prev->gencnt; 784 next->gencnt = prev->gencnt;
739 } 785 }
740 else 786 else
741 { 787 {
788 assert (!next->stack);
742 allocate_stack (next, 1); 789 allocate_stack (next, 1);
743 coro_create (&(next->stack->cctx), 790 coro_create (&(next->stack->cctx),
744 setup_coro, (void *)next, 791 setup_coro, (void *)next,
745 next->stack->sptr, labs (next->stack->ssize)); 792 next->stack->sptr, labs (next->stack->ssize));
746 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); 793 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
794 prev->cursp = stacklevel;
747 /* don't add any code here */ 795 /* don't add any code here */
748 } 796 }
749 } 797 }
750 else 798 else
799 {
751 setup_coro (next); 800 setup_coro (next);
801 next->cursp = stacklevel;
802 }
752 } 803 }
753
754 /*
755 * xnext is now either prev or next, depending on wether
756 * we switched the c stack or not. that's why I use a global
757 * variable, that should become thread-specific at one point.
758 */
759 xnext->cursp = stacklevel;
760 } 804 }
761 805
806 LOCK;
762 if (coro_mortal) 807 if (coro_mortal)
763 { 808 {
764 SvREFCNT_dec (coro_mortal); 809 SvREFCNT_dec (coro_mortal);
765 coro_mortal = 0; 810 coro_mortal = 0;
766 } 811 }
812 UNLOCK;
767} 813}
768 814
769#define SV_CORO(sv,func) \ 815#define SV_CORO(sv,func) \
770 do { \ 816 do { \
771 if (SvROK (sv)) \ 817 if (SvROK (sv)) \
772 sv = SvRV (sv); \ 818 sv = SvRV (sv); \
773 \ 819 \
774 if (SvTYPE(sv) == SVt_PVHV) \ 820 if (SvTYPE (sv) == SVt_PVHV) \
775 { \ 821 { \
776 HE *he = hv_fetch_ent((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ 822 HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \
777 \ 823 \
778 if (!he) \ 824 if (!he) \
779 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ 825 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
780 \ 826 \
781 (sv) = SvRV (HeVAL(he)); \ 827 (sv) = SvRV (HeVAL(he)); \
782 } \ 828 } \
783 \ 829 \
784 /* must also be changed inside Coro::Cont::yield */ \ 830 /* must also be changed inside Coro::Cont::yield */ \
785 if (!SvOBJECT(sv) || SvSTASH(sv) != coro_state_stash) \ 831 if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \
786 croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ 832 croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
787 \ 833 \
788 } while(0) 834 } while(0)
789 835
790#define SvSTATE(sv) (struct coro *)SvIV (sv) 836#define SvSTATE(sv) (struct coro *)SvIV (sv)
793api_transfer(pTHX_ SV *prev, SV *next, int flags) 839api_transfer(pTHX_ SV *prev, SV *next, int flags)
794{ 840{
795 SV_CORO (prev, "Coro::transfer"); 841 SV_CORO (prev, "Coro::transfer");
796 SV_CORO (next, "Coro::transfer"); 842 SV_CORO (next, "Coro::transfer");
797 843
798 transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags); 844 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
799} 845}
800 846
801/** Coro ********************************************************************/ 847/** Coro ********************************************************************/
802 848
803#define PRIO_MAX 3 849#define PRIO_MAX 3
811static GV *coro_current, *coro_idle; 857static GV *coro_current, *coro_idle;
812static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; 858static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
813static int coro_nready; 859static int coro_nready;
814 860
815static void 861static void
816coro_enq (SV *sv) 862coro_enq (pTHX_ SV *sv)
817{ 863{
818 if (SvTYPE (sv) == SVt_PVHV) 864 if (SvTYPE (sv) == SVt_PVHV)
819 { 865 {
820 SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0); 866 SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0);
821 int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; 867 int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
832 878
833 croak ("Coro::ready tried to enqueue something that is not a coroutine"); 879 croak ("Coro::ready tried to enqueue something that is not a coroutine");
834} 880}
835 881
836static SV * 882static SV *
837coro_deq (int min_prio) 883coro_deq (pTHX_ int min_prio)
838{ 884{
839 int prio = PRIO_MAX - PRIO_MIN; 885 int prio = PRIO_MAX - PRIO_MIN;
840 886
841 min_prio -= PRIO_MIN; 887 min_prio -= PRIO_MIN;
842 if (min_prio < 0) 888 if (min_prio < 0)
853} 899}
854 900
855static void 901static void
856api_ready (SV *coro) 902api_ready (SV *coro)
857{ 903{
904 dTHX;
905
858 if (SvROK (coro)) 906 if (SvROK (coro))
859 coro = SvRV (coro); 907 coro = SvRV (coro);
860 908
909 LOCK;
861 coro_enq (SvREFCNT_inc (coro)); 910 coro_enq (aTHX_ SvREFCNT_inc (coro));
911 UNLOCK;
862} 912}
863 913
864static void 914static void
865api_schedule (void) 915api_schedule (void)
866{ 916{
917 dTHX;
918
867 SV *prev, *next; 919 SV *prev, *next;
868 920
921 LOCK;
922
869 prev = SvRV (GvSV (coro_current)); 923 prev = SvRV (GvSV (coro_current));
870 next = coro_deq (PRIO_MIN); 924 next = coro_deq (aTHX_ PRIO_MIN);
871 925
872 if (!next) 926 if (!next)
873 next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); 927 next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
874 928
875 /* free this only after the transfer */ 929 /* free this only after the transfer */
878 932
879 SvRV (GvSV (coro_current)) = next; 933 SvRV (GvSV (coro_current)) = next;
880 934
881 SV_CORO (next, "Coro::schedule"); 935 SV_CORO (next, "Coro::schedule");
882 936
937 UNLOCK;
938
883 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), 939 transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
884 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); 940 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK);
885} 941}
886 942
887static void 943static void
888api_cede (void) 944api_cede (void)
889{ 945{
946 dTHX;
947
948 LOCK;
890 coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); 949 coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
950 UNLOCK;
891 951
892 api_schedule (); 952 api_schedule ();
893} 953}
894 954
895MODULE = Coro::State PACKAGE = Coro::State 955MODULE = Coro::State PACKAGE = Coro::State
896 956
897PROTOTYPES: ENABLE 957PROTOTYPES: ENABLE
898 958
899BOOT: 959BOOT:
900{ /* {} necessary for stoopid perl-5.6.x */ 960{ /* {} necessary for stoopid perl-5.6.x */
961#ifdef USE_ITHREADS
962 MUTEX_INIT (&coro_mutex);
963#endif
964
901 ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); 965 ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
902 PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); 966 PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
903 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 967 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
904 968
905 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 969 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
906 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 970 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
907 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 971 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
908 newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); 972 newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
909
910 if (!padlist_cache)
911 padlist_cache = newHV ();
912 973
913 main_mainstack = PL_mainstack; 974 main_mainstack = PL_mainstack;
914 975
915 coroapi.ver = CORO_API_VERSION; 976 coroapi.ver = CORO_API_VERSION;
916 coroapi.transfer = api_transfer; 977 coroapi.transfer = api_transfer;
924 Coro__State coro; 985 Coro__State coro;
925 986
926 if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) 987 if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV)
927 croak ("Coro::State::_newprocess expects an arrayref"); 988 croak ("Coro::State::_newprocess expects an arrayref");
928 989
929 New (0, coro, 1, struct coro); 990 Newz (0, coro, 1, struct coro);
930 991
931 coro->args = (AV *)SvREFCNT_inc (SvRV (args)); 992 coro->args = (AV *)SvREFCNT_inc (SvRV (args));
932 coro->mainstack = 0; /* actual work is done inside transfer */ 993 /*coro->mainstack = 0; *//*actual work is done inside transfer */
933 coro->stack = 0; 994 /*coro->stack = 0;*/
995
996 /* same as JMPENV_BOOTSTRAP */
997 /* we might be able to recycle start_env, but safe is safe */
998 /*Zero(&coro->start_env, 1, JMPENV);*/
999 coro->start_env.je_ret = -1;
1000 coro->start_env.je_mustcatch = TRUE;
934 1001
935 RETVAL = coro; 1002 RETVAL = coro;
936 OUTPUT: 1003 OUTPUT:
937 RETVAL 1004 RETVAL
938 1005
957 if (coro->mainstack && coro->mainstack != main_mainstack) 1024 if (coro->mainstack && coro->mainstack != main_mainstack)
958 { 1025 {
959 struct coro temp; 1026 struct coro temp;
960 1027
961 PUTBACK; 1028 PUTBACK;
962 SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); 1029 SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
963 LOAD(aTHX_ coro); 1030 LOAD (aTHX_ coro);
964 SPAGAIN; 1031 SPAGAIN;
965 1032
966 destroy_stacks (aTHX); 1033 destroy_stacks (aTHX);
967 1034
968 LOAD((&temp)); /* this will get rid of defsv etc.. */ 1035 LOAD ((&temp)); /* this will get rid of defsv etc.. */
969 SPAGAIN; 1036 SPAGAIN;
970 1037
971 coro->mainstack = 0; 1038 coro->mainstack = 0;
972 } 1039 }
973 1040
974 deallocate_stack (coro); 1041 deallocate_stack (coro);
975 1042 SvREFCNT_dec (coro->args);
976 Safefree (coro); 1043 Safefree (coro);
977
978void
979flush()
980 CODE:
981#ifdef MAY_FLUSH
982 flush_padlist_cache ();
983#endif
984 1044
985void 1045void
986_exit(code) 1046_exit(code)
987 int code 1047 int code
988 PROTOTYPE: $ 1048 PROTOTYPE: $
989 CODE: 1049 CODE:
990#if defined(__GLIBC__) || _POSIX_C_SOURCE
991 _exit (code); 1050 _exit (code);
992#else
993 signal (SIGTERM, SIG_DFL);
994 raise (SIGTERM);
995 exit (code);
996#endif
997 1051
998MODULE = Coro::State PACKAGE = Coro::Cont 1052MODULE = Coro::State PACKAGE = Coro::Cont
999 1053
1000# this is slightly dirty (should expose a c-level api) 1054# this is slightly dirty (should expose a c-level api)
1001 1055
1002void 1056void
1003yield(...) 1057yield(...)
1004 PROTOTYPE: @ 1058 PROTOTYPE: @
1005 CODE: 1059 CODE:
1006 static SV *returnstk; 1060 SV *yieldstack;
1007 SV *sv; 1061 SV *sv;
1008 AV *defav = GvAV (PL_defgv); 1062 AV *defav = GvAV (PL_defgv);
1009 struct coro *prev, *next; 1063 struct coro *prev, *next;
1010 1064
1011 if (!returnstk) 1065 yieldstack = *hv_fetch (
1012 returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); 1066 (HV *)SvRV (GvSV (coro_current)),
1067 "yieldstack", sizeof ("yieldstack") - 1,
1068 0
1069 );
1013 1070
1014 /* set up @_ -- ugly */ 1071 /* set up @_ -- ugly */
1015 av_clear (defav); 1072 av_clear (defav);
1016 av_fill (defav, items - 1); 1073 av_fill (defav, items - 1);
1017 while (items--) 1074 while (items--)
1018 av_store (defav, items, SvREFCNT_inc (ST(items))); 1075 av_store (defav, items, SvREFCNT_inc (ST(items)));
1019 1076
1020 mg_get (returnstk); /* isn't documentation wrong for mg_get? */
1021 sv = av_pop ((AV *)SvRV (returnstk)); 1077 sv = av_pop ((AV *)SvRV (yieldstack));
1022 prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); 1078 prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0)));
1023 next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); 1079 next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0)));
1024 SvREFCNT_dec (sv); 1080 SvREFCNT_dec (sv);
1025 1081
1026 transfer(aTHX_ prev, next, 0); 1082 transfer (aTHX_ prev, next, 0);
1027 1083
1028MODULE = Coro::State PACKAGE = Coro 1084MODULE = Coro::State PACKAGE = Coro
1029 1085
1030# this is slightly dirty (should expose a c-level api) 1086# this is slightly dirty (should expose a c-level api)
1031 1087
1060 sv_setiv(sv, (IV)&coroapi); 1116 sv_setiv(sv, (IV)&coroapi);
1061 SvREADONLY_on(sv); 1117 SvREADONLY_on(sv);
1062 } 1118 }
1063} 1119}
1064 1120
1121#if !PERL_MICRO
1122
1065void 1123void
1066ready(self) 1124ready(self)
1067 SV * self 1125 SV * self
1068 PROTOTYPE: $ 1126 PROTOTYPE: $
1069 CODE: 1127 CODE:
1070 api_ready (self); 1128 api_ready (self);
1129
1130#endif
1071 1131
1072int 1132int
1073nready(...) 1133nready(...)
1074 PROTOTYPE: 1134 PROTOTYPE:
1075 CODE: 1135 CODE:
1087cede(...) 1147cede(...)
1088 PROTOTYPE: 1148 PROTOTYPE:
1089 CODE: 1149 CODE:
1090 api_cede (); 1150 api_cede ();
1091 1151
1152# and these are hacks
1153SV *
1154_aio_get_state ()
1155 CODE:
1156{
1157 struct {
1158 int errorno;
1159 int laststype;
1160 int laststatval;
1161 Stat_t statcache;
1162 } data;
1163
1164 data.errorno = errno;
1165 data.laststype = PL_laststype;
1166 data.laststatval = PL_laststatval;
1167 data.statcache = PL_statcache;
1168
1169 RETVAL = newSVpvn ((char *)&data, sizeof data);
1170}
1171 OUTPUT:
1172 RETVAL
1173
1174void
1175_aio_set_state (char *data_)
1176 PROTOTYPE: $
1177 CODE:
1178{
1179 struct {
1180 int errorno;
1181 int laststype;
1182 int laststatval;
1183 Stat_t statcache;
1184 } *data = (void *)data_;
1185
1186 errno = data->errorno;
1187 PL_laststype = data->laststype;
1188 PL_laststatval = data->laststatval;
1189 PL_statcache = data->statcache;
1190}

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