1 |
#include "libcoro/coro.c" |
2 |
|
3 |
#include "EXTERN.h" |
4 |
#include "perl.h" |
5 |
#include "XSUB.h" |
6 |
|
7 |
#include "patchlevel.h" |
8 |
|
9 |
#include <stdio.h> |
10 |
#include <errno.h> |
11 |
#include <assert.h> |
12 |
|
13 |
#ifdef HAVE_MMAP |
14 |
# include <unistd.h> |
15 |
# include <sys/mman.h> |
16 |
# ifndef MAP_ANONYMOUS |
17 |
# ifdef MAP_ANON |
18 |
# define MAP_ANONYMOUS MAP_ANON |
19 |
# else |
20 |
# undef HAVE_MMAP |
21 |
# endif |
22 |
# endif |
23 |
# include <limits.h> |
24 |
# ifndef PAGESIZE |
25 |
# define PAGESIZE pagesize |
26 |
# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
27 |
static long pagesize; |
28 |
# else |
29 |
# define BOOT_PAGESIZE (void)0 |
30 |
# endif |
31 |
#else |
32 |
# define PAGESIZE 0 |
33 |
# define BOOT_PAGESIZE (void)0 |
34 |
#endif |
35 |
|
36 |
#if USE_VALGRIND |
37 |
# include <valgrind/valgrind.h> |
38 |
#endif |
39 |
|
40 |
/* the maximum number of idle cctx that will be pooled */ |
41 |
#define MAX_IDLE_CCTX 8 |
42 |
|
43 |
#define PERL_VERSION_ATLEAST(a,b,c) \ |
44 |
(PERL_REVISION > (a) \ |
45 |
|| (PERL_REVISION == (a) \ |
46 |
&& (PERL_VERSION > (b) \ |
47 |
|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
48 |
|
49 |
#if !PERL_VERSION_ATLEAST (5,6,0) |
50 |
# ifndef PL_ppaddr |
51 |
# define PL_ppaddr ppaddr |
52 |
# endif |
53 |
# ifndef call_sv |
54 |
# define call_sv perl_call_sv |
55 |
# endif |
56 |
# ifndef get_sv |
57 |
# define get_sv perl_get_sv |
58 |
# endif |
59 |
# ifndef get_cv |
60 |
# define get_cv perl_get_cv |
61 |
# endif |
62 |
# ifndef IS_PADGV |
63 |
# define IS_PADGV(v) 0 |
64 |
# endif |
65 |
# ifndef IS_PADCONST |
66 |
# define IS_PADCONST(v) 0 |
67 |
# endif |
68 |
#endif |
69 |
|
70 |
/* 5.8.7 */ |
71 |
#ifndef SvRV_set |
72 |
# define SvRV_set(s,v) SvRV(s) = (v) |
73 |
#endif |
74 |
|
75 |
#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
76 |
# undef STACKGUARD |
77 |
#endif |
78 |
|
79 |
#ifndef STACKGUARD |
80 |
# define STACKGUARD 0 |
81 |
#endif |
82 |
|
83 |
/* prefer perl internal functions over our own? */ |
84 |
#ifndef PREFER_PERL_FUNCTIONS |
85 |
# define PREFER_PERL_FUNCTIONS 0 |
86 |
#endif |
87 |
|
88 |
/* The next macro should declare a variable stacklevel that contains and approximation |
89 |
* to the current C stack pointer. Its property is that it changes with each call |
90 |
* and should be unique. */ |
91 |
#define dSTACKLEVEL int stacklevel |
92 |
#define STACKLEVEL ((void *)&stacklevel) |
93 |
|
94 |
#define IN_DESTRUCT (PL_main_cv == Nullcv) |
95 |
|
96 |
#if __GNUC__ >= 3 |
97 |
# define attribute(x) __attribute__(x) |
98 |
# define BARRIER __asm__ __volatile__ ("" : : : "memory") |
99 |
#else |
100 |
# define attribute(x) |
101 |
# define BARRIER |
102 |
#endif |
103 |
|
104 |
#define NOINLINE attribute ((noinline)) |
105 |
|
106 |
#include "CoroAPI.h" |
107 |
|
108 |
#ifdef USE_ITHREADS |
109 |
static perl_mutex coro_mutex; |
110 |
# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
111 |
# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
112 |
#else |
113 |
# define LOCK (void)0 |
114 |
# define UNLOCK (void)0 |
115 |
#endif |
116 |
|
117 |
struct io_state |
118 |
{ |
119 |
int errorno; |
120 |
I32 laststype; |
121 |
int laststatval; |
122 |
Stat_t statcache; |
123 |
}; |
124 |
|
125 |
static struct CoroAPI coroapi; |
126 |
static AV *main_mainstack; /* used to differentiate between $main and others */ |
127 |
static HV *coro_state_stash, *coro_stash; |
128 |
static SV *coro_mortal; /* will be freed after next transfer */ |
129 |
|
130 |
static struct coro_cctx *cctx_first; |
131 |
static int cctx_count, cctx_idle; |
132 |
|
133 |
/* this is a structure representing a c-level coroutine */ |
134 |
typedef struct coro_cctx { |
135 |
struct coro_cctx *next; |
136 |
|
137 |
/* the stack */ |
138 |
void *sptr; |
139 |
long ssize; /* positive == mmap, otherwise malloc */ |
140 |
|
141 |
/* cpu state */ |
142 |
void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
143 |
JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
144 |
JMPENV *top_env; |
145 |
coro_context cctx; |
146 |
|
147 |
int inuse; |
148 |
|
149 |
#if USE_VALGRIND |
150 |
int valgrind_id; |
151 |
#endif |
152 |
} coro_cctx; |
153 |
|
154 |
enum { |
155 |
CF_RUNNING = 0x0001, /* coroutine is running */ |
156 |
CF_READY = 0x0002, /* coroutine is ready */ |
157 |
CF_NEW = 0x0004, /* has never been switched to */ |
158 |
CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
159 |
}; |
160 |
|
161 |
/* this is a structure representing a perl-level coroutine */ |
162 |
struct coro { |
163 |
/* the c coroutine allocated to this perl coroutine, if any */ |
164 |
coro_cctx *cctx; |
165 |
|
166 |
/* data associated with this coroutine (initial args) */ |
167 |
AV *args; |
168 |
int refcnt; |
169 |
int save; /* CORO_SAVE flags */ |
170 |
int flags; /* CF_ flags */ |
171 |
|
172 |
/* optionally saved, might be zero */ |
173 |
AV *defav; /* @_ */ |
174 |
SV *defsv; /* $_ */ |
175 |
SV *errsv; /* $@ */ |
176 |
SV *irssv; /* $/ */ |
177 |
SV *irssv_sv; /* real $/ cache */ |
178 |
|
179 |
#define VAR(name,type) type name; |
180 |
# include "state.h" |
181 |
#undef VAR |
182 |
|
183 |
/* coro process data */ |
184 |
int prio; |
185 |
}; |
186 |
|
187 |
typedef struct coro *Coro__State; |
188 |
typedef struct coro *Coro__State_or_hashref; |
189 |
|
190 |
static AV * |
191 |
coro_clone_padlist (CV *cv) |
192 |
{ |
193 |
AV *padlist = CvPADLIST (cv); |
194 |
AV *newpadlist, *newpad; |
195 |
|
196 |
newpadlist = newAV (); |
197 |
AvREAL_off (newpadlist); |
198 |
#if PERL_VERSION_ATLEAST (5,9,0) |
199 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
200 |
#else |
201 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
202 |
#endif |
203 |
newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
204 |
--AvFILLp (padlist); |
205 |
|
206 |
av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
207 |
av_store (newpadlist, 1, (SV *)newpad); |
208 |
|
209 |
return newpadlist; |
210 |
} |
211 |
|
212 |
static void |
213 |
free_padlist (AV *padlist) |
214 |
{ |
215 |
/* may be during global destruction */ |
216 |
if (SvREFCNT (padlist)) |
217 |
{ |
218 |
I32 i = AvFILLp (padlist); |
219 |
while (i >= 0) |
220 |
{ |
221 |
SV **svp = av_fetch (padlist, i--, FALSE); |
222 |
if (svp) |
223 |
{ |
224 |
SV *sv; |
225 |
while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
226 |
SvREFCNT_dec (sv); |
227 |
|
228 |
SvREFCNT_dec (*svp); |
229 |
} |
230 |
} |
231 |
|
232 |
SvREFCNT_dec ((SV*)padlist); |
233 |
} |
234 |
} |
235 |
|
236 |
static int |
237 |
coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
238 |
{ |
239 |
AV *padlist; |
240 |
AV *av = (AV *)mg->mg_obj; |
241 |
|
242 |
/* casting is fun. */ |
243 |
while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
244 |
free_padlist (padlist); |
245 |
|
246 |
SvREFCNT_dec (av); |
247 |
|
248 |
return 0; |
249 |
} |
250 |
|
251 |
#define PERL_MAGIC_coro PERL_MAGIC_ext |
252 |
|
253 |
static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
254 |
|
255 |
#define CORO_MAGIC(cv) \ |
256 |
SvMAGIC (cv) \ |
257 |
? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
258 |
? SvMAGIC (cv) \ |
259 |
: mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
260 |
: 0 |
261 |
|
262 |
/* the next two functions merely cache the padlists */ |
263 |
static void |
264 |
get_padlist (CV *cv) |
265 |
{ |
266 |
MAGIC *mg = CORO_MAGIC (cv); |
267 |
AV *av; |
268 |
|
269 |
if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
270 |
CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
271 |
else |
272 |
{ |
273 |
#if PREFER_PERL_FUNCTIONS |
274 |
/* this is probably cleaner, but also slower? */ |
275 |
CV *cp = Perl_cv_clone (cv); |
276 |
CvPADLIST (cv) = CvPADLIST (cp); |
277 |
CvPADLIST (cp) = 0; |
278 |
SvREFCNT_dec (cp); |
279 |
#else |
280 |
CvPADLIST (cv) = coro_clone_padlist (cv); |
281 |
#endif |
282 |
} |
283 |
} |
284 |
|
285 |
static void |
286 |
put_padlist (CV *cv) |
287 |
{ |
288 |
MAGIC *mg = CORO_MAGIC (cv); |
289 |
AV *av; |
290 |
|
291 |
if (!mg) |
292 |
{ |
293 |
sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
294 |
mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
295 |
mg->mg_virtual = &vtbl_coro; |
296 |
mg->mg_obj = (SV *)newAV (); |
297 |
} |
298 |
|
299 |
av = (AV *)mg->mg_obj; |
300 |
|
301 |
if (AvFILLp (av) >= AvMAX (av)) |
302 |
av_extend (av, AvMAX (av) + 1); |
303 |
|
304 |
AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
305 |
} |
306 |
|
307 |
#define SB do { |
308 |
#define SE } while (0) |
309 |
|
310 |
#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
311 |
|
312 |
static void |
313 |
load_perl (Coro__State c) |
314 |
{ |
315 |
#define VAR(name,type) PL_ ## name = c->name; |
316 |
# include "state.h" |
317 |
#undef VAR |
318 |
|
319 |
if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
320 |
if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
321 |
if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
322 |
if (c->irssv) |
323 |
{ |
324 |
if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv)) |
325 |
SvREFCNT_dec (c->irssv); |
326 |
else |
327 |
{ |
328 |
REPLACE_SV (PL_rs, c->irssv); |
329 |
if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0); |
330 |
sv_setsv (c->irssv_sv, PL_rs); |
331 |
} |
332 |
} |
333 |
|
334 |
{ |
335 |
dSP; |
336 |
CV *cv; |
337 |
|
338 |
/* now do the ugly restore mess */ |
339 |
while ((cv = (CV *)POPs)) |
340 |
{ |
341 |
put_padlist (cv); /* mark this padlist as available */ |
342 |
CvDEPTH (cv) = PTR2IV (POPs); |
343 |
CvPADLIST (cv) = (AV *)POPs; |
344 |
} |
345 |
|
346 |
PUTBACK; |
347 |
} |
348 |
} |
349 |
|
350 |
static void |
351 |
save_perl (Coro__State c) |
352 |
{ |
353 |
{ |
354 |
dSP; |
355 |
I32 cxix = cxstack_ix; |
356 |
PERL_CONTEXT *ccstk = cxstack; |
357 |
PERL_SI *top_si = PL_curstackinfo; |
358 |
|
359 |
/* |
360 |
* the worst thing you can imagine happens first - we have to save |
361 |
* (and reinitialize) all cv's in the whole callchain :( |
362 |
*/ |
363 |
|
364 |
EXTEND (SP, 3 + 1); |
365 |
PUSHs (Nullsv); |
366 |
/* this loop was inspired by pp_caller */ |
367 |
for (;;) |
368 |
{ |
369 |
while (cxix >= 0) |
370 |
{ |
371 |
PERL_CONTEXT *cx = &ccstk[cxix--]; |
372 |
|
373 |
if (CxTYPE (cx) == CXt_SUB) |
374 |
{ |
375 |
CV *cv = cx->blk_sub.cv; |
376 |
|
377 |
if (CvDEPTH (cv)) |
378 |
{ |
379 |
EXTEND (SP, 3); |
380 |
PUSHs ((SV *)CvPADLIST (cv)); |
381 |
PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
382 |
PUSHs ((SV *)cv); |
383 |
|
384 |
CvDEPTH (cv) = 0; |
385 |
get_padlist (cv); |
386 |
} |
387 |
} |
388 |
} |
389 |
|
390 |
if (top_si->si_type == PERLSI_MAIN) |
391 |
break; |
392 |
|
393 |
top_si = top_si->si_prev; |
394 |
ccstk = top_si->si_cxstack; |
395 |
cxix = top_si->si_cxix; |
396 |
} |
397 |
|
398 |
PUTBACK; |
399 |
} |
400 |
|
401 |
c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
402 |
c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
403 |
c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
404 |
c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; |
405 |
|
406 |
#define VAR(name,type)c->name = PL_ ## name; |
407 |
# include "state.h" |
408 |
#undef VAR |
409 |
} |
410 |
|
411 |
/* |
412 |
* allocate various perl stacks. This is an exact copy |
413 |
* of perl.c:init_stacks, except that it uses less memory |
414 |
* on the (sometimes correct) assumption that coroutines do |
415 |
* not usually need a lot of stackspace. |
416 |
*/ |
417 |
#if PREFER_PERL_FUNCTIONS |
418 |
# define coro_init_stacks init_stacks |
419 |
#else |
420 |
static void |
421 |
coro_init_stacks () |
422 |
{ |
423 |
PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
424 |
PL_curstackinfo->si_type = PERLSI_MAIN; |
425 |
PL_curstack = PL_curstackinfo->si_stack; |
426 |
PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
427 |
|
428 |
PL_stack_base = AvARRAY(PL_curstack); |
429 |
PL_stack_sp = PL_stack_base; |
430 |
PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
431 |
|
432 |
New(50,PL_tmps_stack,128,SV*); |
433 |
PL_tmps_floor = -1; |
434 |
PL_tmps_ix = -1; |
435 |
PL_tmps_max = 128; |
436 |
|
437 |
New(54,PL_markstack,32,I32); |
438 |
PL_markstack_ptr = PL_markstack; |
439 |
PL_markstack_max = PL_markstack + 32; |
440 |
|
441 |
#ifdef SET_MARK_OFFSET |
442 |
SET_MARK_OFFSET; |
443 |
#endif |
444 |
|
445 |
New(54,PL_scopestack,32,I32); |
446 |
PL_scopestack_ix = 0; |
447 |
PL_scopestack_max = 32; |
448 |
|
449 |
New(54,PL_savestack,64,ANY); |
450 |
PL_savestack_ix = 0; |
451 |
PL_savestack_max = 64; |
452 |
|
453 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
454 |
New(54,PL_retstack,16,OP*); |
455 |
PL_retstack_ix = 0; |
456 |
PL_retstack_max = 16; |
457 |
#endif |
458 |
} |
459 |
#endif |
460 |
|
461 |
/* |
462 |
* destroy the stacks, the callchain etc... |
463 |
*/ |
464 |
static void |
465 |
coro_destroy_stacks () |
466 |
{ |
467 |
if (!IN_DESTRUCT) |
468 |
{ |
469 |
/* restore all saved variables and stuff */ |
470 |
LEAVE_SCOPE (0); |
471 |
assert (PL_tmps_floor == -1); |
472 |
|
473 |
/* free all temporaries */ |
474 |
FREETMPS; |
475 |
assert (PL_tmps_ix == -1); |
476 |
|
477 |
/* unwind all extra stacks */ |
478 |
POPSTACK_TO (PL_mainstack); |
479 |
|
480 |
/* unwind main stack */ |
481 |
dounwind (-1); |
482 |
} |
483 |
|
484 |
while (PL_curstackinfo->si_next) |
485 |
PL_curstackinfo = PL_curstackinfo->si_next; |
486 |
|
487 |
while (PL_curstackinfo) |
488 |
{ |
489 |
PERL_SI *p = PL_curstackinfo->si_prev; |
490 |
|
491 |
if (!IN_DESTRUCT) |
492 |
SvREFCNT_dec (PL_curstackinfo->si_stack); |
493 |
|
494 |
Safefree (PL_curstackinfo->si_cxstack); |
495 |
Safefree (PL_curstackinfo); |
496 |
PL_curstackinfo = p; |
497 |
} |
498 |
|
499 |
Safefree (PL_tmps_stack); |
500 |
Safefree (PL_markstack); |
501 |
Safefree (PL_scopestack); |
502 |
Safefree (PL_savestack); |
503 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
504 |
Safefree (PL_retstack); |
505 |
#endif |
506 |
} |
507 |
|
508 |
static void |
509 |
setup_coro (struct coro *coro) |
510 |
{ |
511 |
/* |
512 |
* emulate part of the perl startup here. |
513 |
*/ |
514 |
|
515 |
coro_init_stacks (); |
516 |
|
517 |
PL_curcop = &PL_compiling; |
518 |
PL_in_eval = EVAL_NULL; |
519 |
PL_curpm = 0; |
520 |
PL_localizing = 0; |
521 |
PL_dirty = 0; |
522 |
PL_restartop = 0; |
523 |
|
524 |
{ |
525 |
dSP; |
526 |
LOGOP myop; |
527 |
|
528 |
SvREFCNT_dec (GvAV (PL_defgv)); |
529 |
GvAV (PL_defgv) = coro->args; coro->args = 0; |
530 |
|
531 |
Zero (&myop, 1, LOGOP); |
532 |
myop.op_next = Nullop; |
533 |
myop.op_flags = OPf_WANT_VOID; |
534 |
|
535 |
PUSHMARK (SP); |
536 |
XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
537 |
PUTBACK; |
538 |
PL_op = (OP *)&myop; |
539 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
540 |
SPAGAIN; |
541 |
} |
542 |
|
543 |
ENTER; /* necessary e.g. for dounwind */ |
544 |
} |
545 |
|
546 |
static void |
547 |
free_coro_mortal () |
548 |
{ |
549 |
if (coro_mortal) |
550 |
{ |
551 |
SvREFCNT_dec (coro_mortal); |
552 |
coro_mortal = 0; |
553 |
} |
554 |
} |
555 |
|
556 |
/* inject a fake call to Coro::State::_cctx_init into the execution */ |
557 |
static void NOINLINE |
558 |
prepare_cctx (coro_cctx *cctx) |
559 |
{ |
560 |
dSP; |
561 |
LOGOP myop; |
562 |
|
563 |
Zero (&myop, 1, LOGOP); |
564 |
myop.op_next = PL_op; |
565 |
myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
566 |
|
567 |
PUSHMARK (SP); |
568 |
EXTEND (SP, 2); |
569 |
PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
570 |
PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
571 |
PUTBACK; |
572 |
PL_op = (OP *)&myop; |
573 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
574 |
SPAGAIN; |
575 |
} |
576 |
|
577 |
static void |
578 |
coro_run (void *arg) |
579 |
{ |
580 |
/* coro_run is the alternative tail of transfer(), so unlock here. */ |
581 |
UNLOCK; |
582 |
|
583 |
/* |
584 |
* this is a _very_ stripped down perl interpreter ;) |
585 |
*/ |
586 |
PL_top_env = &PL_start_env; |
587 |
|
588 |
/* inject call to cctx_init */ |
589 |
prepare_cctx ((coro_cctx *)arg); |
590 |
|
591 |
/* somebody will hit me for both perl_run and PL_restartop */ |
592 |
PL_restartop = PL_op; |
593 |
perl_run (PL_curinterp); |
594 |
|
595 |
fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
596 |
abort (); |
597 |
} |
598 |
|
599 |
static coro_cctx * |
600 |
cctx_new () |
601 |
{ |
602 |
coro_cctx *cctx; |
603 |
|
604 |
++cctx_count; |
605 |
|
606 |
Newz (0, cctx, 1, coro_cctx); |
607 |
|
608 |
#if HAVE_MMAP |
609 |
|
610 |
cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
611 |
/* mmap supposedly does allocate-on-write for us */ |
612 |
cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
613 |
|
614 |
if (cctx->sptr == (void *)-1) |
615 |
{ |
616 |
perror ("FATAL: unable to mmap stack for coroutine"); |
617 |
_exit (EXIT_FAILURE); |
618 |
} |
619 |
|
620 |
# if STACKGUARD |
621 |
mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
622 |
# endif |
623 |
|
624 |
#else |
625 |
|
626 |
cctx->ssize = STACKSIZE * (long)sizeof (long); |
627 |
New (0, cctx->sptr, STACKSIZE, long); |
628 |
|
629 |
if (!cctx->sptr) |
630 |
{ |
631 |
perror ("FATAL: unable to malloc stack for coroutine"); |
632 |
_exit (EXIT_FAILURE); |
633 |
} |
634 |
|
635 |
#endif |
636 |
|
637 |
#if USE_VALGRIND |
638 |
cctx->valgrind_id = VALGRIND_STACK_REGISTER ( |
639 |
STACKGUARD * PAGESIZE + (char *)cctx->sptr, |
640 |
cctx->ssize + (char *)cctx->sptr |
641 |
); |
642 |
#endif |
643 |
|
644 |
coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize); |
645 |
|
646 |
return cctx; |
647 |
} |
648 |
|
649 |
static void |
650 |
cctx_destroy (coro_cctx *cctx) |
651 |
{ |
652 |
if (!cctx) |
653 |
return; |
654 |
|
655 |
--cctx_count; |
656 |
|
657 |
#if USE_VALGRIND |
658 |
VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
659 |
#endif |
660 |
|
661 |
#if HAVE_MMAP |
662 |
munmap (cctx->sptr, cctx->ssize); |
663 |
#else |
664 |
Safefree (cctx->sptr); |
665 |
#endif |
666 |
|
667 |
Safefree (cctx); |
668 |
} |
669 |
|
670 |
static coro_cctx * |
671 |
cctx_get () |
672 |
{ |
673 |
coro_cctx *cctx; |
674 |
|
675 |
if (cctx_first) |
676 |
{ |
677 |
cctx = cctx_first; |
678 |
cctx_first = cctx->next; |
679 |
--cctx_idle; |
680 |
} |
681 |
else |
682 |
{ |
683 |
cctx = cctx_new (); |
684 |
PL_op = PL_op->op_next; |
685 |
} |
686 |
|
687 |
return cctx; |
688 |
} |
689 |
|
690 |
static void |
691 |
cctx_put (coro_cctx *cctx) |
692 |
{ |
693 |
/* free another cctx if overlimit */ |
694 |
if (cctx_idle >= MAX_IDLE_CCTX) |
695 |
{ |
696 |
coro_cctx *first = cctx_first; |
697 |
cctx_first = first->next; |
698 |
--cctx_idle; |
699 |
|
700 |
assert (!first->inuse); |
701 |
cctx_destroy (first); |
702 |
} |
703 |
|
704 |
++cctx_idle; |
705 |
cctx->next = cctx_first; |
706 |
cctx_first = cctx; |
707 |
} |
708 |
|
709 |
/* never call directly, always through the coro_state_transfer global variable */ |
710 |
static void NOINLINE |
711 |
transfer (struct coro *prev, struct coro *next) |
712 |
{ |
713 |
dSTACKLEVEL; |
714 |
|
715 |
/* sometimes transfer is only called to set idle_sp */ |
716 |
if (!next) |
717 |
{ |
718 |
((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
719 |
assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
720 |
} |
721 |
else if (prev != next) |
722 |
{ |
723 |
coro_cctx *prev__cctx; |
724 |
|
725 |
if (prev->flags & CF_NEW) |
726 |
{ |
727 |
/* create a new empty context */ |
728 |
Newz (0, prev->cctx, 1, coro_cctx); |
729 |
prev->cctx->inuse = 1; |
730 |
prev->flags &= ~CF_NEW; |
731 |
prev->flags |= CF_RUNNING; |
732 |
} |
733 |
|
734 |
/*TODO: must not croak here */ |
735 |
if (!prev->flags & CF_RUNNING) |
736 |
croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
737 |
|
738 |
if (next->flags & CF_RUNNING) |
739 |
croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
740 |
|
741 |
if (next->flags & CF_DESTROYED) |
742 |
croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
743 |
|
744 |
prev->flags &= ~CF_RUNNING; |
745 |
next->flags |= CF_RUNNING; |
746 |
|
747 |
LOCK; |
748 |
|
749 |
if (next->flags & CF_NEW) |
750 |
{ |
751 |
/* need to start coroutine */ |
752 |
next->flags &= ~CF_NEW; |
753 |
/* first get rid of the old state */ |
754 |
save_perl (prev); |
755 |
/* setup coroutine call */ |
756 |
setup_coro (next); |
757 |
/* need a new stack */ |
758 |
assert (!next->cctx); |
759 |
} |
760 |
else |
761 |
{ |
762 |
/* coroutine already started */ |
763 |
save_perl (prev); |
764 |
load_perl (next); |
765 |
} |
766 |
|
767 |
prev__cctx = prev->cctx; |
768 |
|
769 |
/* possibly "free" the cctx */ |
770 |
if (prev__cctx->idle_sp == STACKLEVEL) |
771 |
{ |
772 |
/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
773 |
assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
774 |
|
775 |
prev->cctx = 0; |
776 |
|
777 |
cctx_put (prev__cctx); |
778 |
prev__cctx->inuse = 0; |
779 |
} |
780 |
|
781 |
if (!next->cctx) |
782 |
{ |
783 |
next->cctx = cctx_get (); |
784 |
assert (!next->cctx->inuse); |
785 |
next->cctx->inuse = 1; |
786 |
} |
787 |
|
788 |
if (prev__cctx != next->cctx) |
789 |
{ |
790 |
prev__cctx->top_env = PL_top_env; |
791 |
PL_top_env = next->cctx->top_env; |
792 |
coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
793 |
} |
794 |
|
795 |
free_coro_mortal (); |
796 |
UNLOCK; |
797 |
} |
798 |
} |
799 |
|
800 |
struct transfer_args |
801 |
{ |
802 |
struct coro *prev, *next; |
803 |
}; |
804 |
|
805 |
#define TRANSFER(ta) transfer ((ta).prev, (ta).next) |
806 |
|
807 |
static int |
808 |
coro_state_destroy (struct coro *coro) |
809 |
{ |
810 |
if (coro->flags & CF_DESTROYED) |
811 |
return 0; |
812 |
|
813 |
coro->flags |= CF_DESTROYED; |
814 |
|
815 |
if (coro->mainstack && coro->mainstack != main_mainstack) |
816 |
{ |
817 |
assert (!(coro->flags & CF_RUNNING)); |
818 |
|
819 |
struct coro temp; |
820 |
Zero (&temp, 1, struct coro); |
821 |
temp.save = CORO_SAVE_ALL; |
822 |
|
823 |
if (coro->flags & CF_RUNNING) |
824 |
croak ("FATAL: tried to destroy currently running coroutine"); |
825 |
|
826 |
save_perl (&temp); |
827 |
load_perl (coro); |
828 |
|
829 |
coro_destroy_stacks (); |
830 |
|
831 |
load_perl (&temp); /* this will get rid of defsv etc.. */ |
832 |
|
833 |
coro->mainstack = 0; |
834 |
} |
835 |
|
836 |
cctx_destroy (coro->cctx); |
837 |
SvREFCNT_dec (coro->args); |
838 |
|
839 |
return 1; |
840 |
} |
841 |
|
842 |
static int |
843 |
coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
844 |
{ |
845 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
846 |
mg->mg_ptr = 0; |
847 |
|
848 |
if (--coro->refcnt < 0) |
849 |
{ |
850 |
coro_state_destroy (coro); |
851 |
Safefree (coro); |
852 |
} |
853 |
|
854 |
return 0; |
855 |
} |
856 |
|
857 |
static int |
858 |
coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
859 |
{ |
860 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
861 |
|
862 |
++coro->refcnt; |
863 |
|
864 |
return 0; |
865 |
} |
866 |
|
867 |
static MGVTBL coro_state_vtbl = { |
868 |
0, 0, 0, 0, |
869 |
coro_state_free, |
870 |
0, |
871 |
#ifdef MGf_DUP |
872 |
coro_state_dup, |
873 |
#else |
874 |
# define MGf_DUP 0 |
875 |
#endif |
876 |
}; |
877 |
|
878 |
static struct coro * |
879 |
SvSTATE (SV *coro) |
880 |
{ |
881 |
HV *stash; |
882 |
MAGIC *mg; |
883 |
|
884 |
if (SvROK (coro)) |
885 |
coro = SvRV (coro); |
886 |
|
887 |
stash = SvSTASH (coro); |
888 |
if (stash != coro_stash && stash != coro_state_stash) |
889 |
{ |
890 |
/* very slow, but rare, check */ |
891 |
if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
892 |
croak ("Coro::State object required"); |
893 |
} |
894 |
|
895 |
mg = SvMAGIC (coro); |
896 |
assert (mg->mg_type == PERL_MAGIC_ext); |
897 |
return (struct coro *)mg->mg_ptr; |
898 |
} |
899 |
|
900 |
static void |
901 |
prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
902 |
{ |
903 |
ta->prev = SvSTATE (prev_sv); |
904 |
ta->next = SvSTATE (next_sv); |
905 |
} |
906 |
|
907 |
static void |
908 |
api_transfer (SV *prev_sv, SV *next_sv) |
909 |
{ |
910 |
struct transfer_args ta; |
911 |
|
912 |
prepare_transfer (&ta, prev_sv, next_sv); |
913 |
TRANSFER (ta); |
914 |
} |
915 |
|
916 |
static int |
917 |
api_save (SV *coro_sv, int new_save) |
918 |
{ |
919 |
struct coro *coro = SvSTATE (coro_sv); |
920 |
int old_save = coro->save; |
921 |
|
922 |
if (new_save >= 0) |
923 |
coro->save = new_save; |
924 |
|
925 |
return old_save; |
926 |
} |
927 |
|
928 |
/** Coro ********************************************************************/ |
929 |
|
930 |
#define PRIO_MAX 3 |
931 |
#define PRIO_HIGH 1 |
932 |
#define PRIO_NORMAL 0 |
933 |
#define PRIO_LOW -1 |
934 |
#define PRIO_IDLE -3 |
935 |
#define PRIO_MIN -4 |
936 |
|
937 |
/* for Coro.pm */ |
938 |
static SV *coro_current; |
939 |
static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
940 |
static int coro_nready; |
941 |
|
942 |
static void |
943 |
coro_enq (SV *coro_sv) |
944 |
{ |
945 |
av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
946 |
coro_nready++; |
947 |
} |
948 |
|
949 |
static SV * |
950 |
coro_deq (int min_prio) |
951 |
{ |
952 |
int prio = PRIO_MAX - PRIO_MIN; |
953 |
|
954 |
min_prio -= PRIO_MIN; |
955 |
if (min_prio < 0) |
956 |
min_prio = 0; |
957 |
|
958 |
for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
959 |
if (AvFILLp (coro_ready [prio]) >= 0) |
960 |
{ |
961 |
coro_nready--; |
962 |
return av_shift (coro_ready [prio]); |
963 |
} |
964 |
|
965 |
return 0; |
966 |
} |
967 |
|
968 |
static int |
969 |
api_ready (SV *coro_sv) |
970 |
{ |
971 |
struct coro *coro; |
972 |
|
973 |
if (SvROK (coro_sv)) |
974 |
coro_sv = SvRV (coro_sv); |
975 |
|
976 |
coro = SvSTATE (coro_sv); |
977 |
|
978 |
if (coro->flags & CF_READY) |
979 |
return 0; |
980 |
|
981 |
coro->flags |= CF_READY; |
982 |
|
983 |
LOCK; |
984 |
coro_enq (SvREFCNT_inc (coro_sv)); |
985 |
UNLOCK; |
986 |
|
987 |
return 1; |
988 |
} |
989 |
|
990 |
static int |
991 |
api_is_ready (SV *coro_sv) |
992 |
{ |
993 |
return !!(SvSTATE (coro_sv)->flags & CF_READY); |
994 |
} |
995 |
|
996 |
static void |
997 |
prepare_schedule (struct transfer_args *ta) |
998 |
{ |
999 |
SV *prev_sv, *next_sv; |
1000 |
|
1001 |
for (;;) |
1002 |
{ |
1003 |
LOCK; |
1004 |
next_sv = coro_deq (PRIO_MIN); |
1005 |
UNLOCK; |
1006 |
|
1007 |
/* nothing to schedule: call the idle handler */ |
1008 |
if (!next_sv) |
1009 |
{ |
1010 |
dSP; |
1011 |
|
1012 |
ENTER; |
1013 |
SAVETMPS; |
1014 |
|
1015 |
PUSHMARK (SP); |
1016 |
PUTBACK; |
1017 |
call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
1018 |
|
1019 |
FREETMPS; |
1020 |
LEAVE; |
1021 |
continue; |
1022 |
} |
1023 |
|
1024 |
ta->next = SvSTATE (next_sv); |
1025 |
|
1026 |
/* cannot transfer to destroyed coros, skip and look for next */ |
1027 |
if (ta->next->flags & CF_DESTROYED) |
1028 |
{ |
1029 |
SvREFCNT_dec (next_sv); |
1030 |
continue; |
1031 |
} |
1032 |
|
1033 |
break; |
1034 |
} |
1035 |
|
1036 |
/* free this only after the transfer */ |
1037 |
prev_sv = SvRV (coro_current); |
1038 |
SvRV_set (coro_current, next_sv); |
1039 |
ta->prev = SvSTATE (prev_sv); |
1040 |
|
1041 |
assert (ta->next->flags & CF_READY); |
1042 |
ta->next->flags &= ~CF_READY; |
1043 |
|
1044 |
LOCK; |
1045 |
free_coro_mortal (); |
1046 |
coro_mortal = prev_sv; |
1047 |
UNLOCK; |
1048 |
} |
1049 |
|
1050 |
static void |
1051 |
prepare_cede (struct transfer_args *ta) |
1052 |
{ |
1053 |
api_ready (coro_current); |
1054 |
prepare_schedule (ta); |
1055 |
} |
1056 |
|
1057 |
static int |
1058 |
prepare_cede_notself (struct transfer_args *ta) |
1059 |
{ |
1060 |
if (coro_nready) |
1061 |
{ |
1062 |
SV *prev = SvRV (coro_current); |
1063 |
prepare_schedule (ta); |
1064 |
api_ready (prev); |
1065 |
return 1; |
1066 |
} |
1067 |
else |
1068 |
return 0; |
1069 |
} |
1070 |
|
1071 |
static void |
1072 |
api_schedule (void) |
1073 |
{ |
1074 |
struct transfer_args ta; |
1075 |
|
1076 |
prepare_schedule (&ta); |
1077 |
TRANSFER (ta); |
1078 |
} |
1079 |
|
1080 |
static int |
1081 |
api_cede (void) |
1082 |
{ |
1083 |
struct transfer_args ta; |
1084 |
|
1085 |
prepare_cede (&ta); |
1086 |
|
1087 |
if (ta.prev != ta.next) |
1088 |
{ |
1089 |
TRANSFER (ta); |
1090 |
return 1; |
1091 |
} |
1092 |
else |
1093 |
return 0; |
1094 |
} |
1095 |
|
1096 |
static int |
1097 |
api_cede_notself (void) |
1098 |
{ |
1099 |
struct transfer_args ta; |
1100 |
|
1101 |
if (prepare_cede_notself (&ta)) |
1102 |
{ |
1103 |
TRANSFER (ta); |
1104 |
return 1; |
1105 |
} |
1106 |
else |
1107 |
return 0; |
1108 |
} |
1109 |
|
1110 |
MODULE = Coro::State PACKAGE = Coro::State |
1111 |
|
1112 |
PROTOTYPES: DISABLE |
1113 |
|
1114 |
BOOT: |
1115 |
{ |
1116 |
#ifdef USE_ITHREADS |
1117 |
MUTEX_INIT (&coro_mutex); |
1118 |
#endif |
1119 |
BOOT_PAGESIZE; |
1120 |
|
1121 |
coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1122 |
|
1123 |
newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); |
1124 |
newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); |
1125 |
newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV)); |
1126 |
newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV)); |
1127 |
newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); |
1128 |
|
1129 |
main_mainstack = PL_mainstack; |
1130 |
|
1131 |
coroapi.ver = CORO_API_VERSION; |
1132 |
coroapi.transfer = api_transfer; |
1133 |
|
1134 |
assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1135 |
} |
1136 |
|
1137 |
SV * |
1138 |
new (char *klass, ...) |
1139 |
CODE: |
1140 |
{ |
1141 |
struct coro *coro; |
1142 |
HV *hv; |
1143 |
int i; |
1144 |
|
1145 |
Newz (0, coro, 1, struct coro); |
1146 |
coro->args = newAV (); |
1147 |
coro->save = CORO_SAVE_ALL; |
1148 |
coro->flags = CF_NEW; |
1149 |
|
1150 |
hv = newHV (); |
1151 |
sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1152 |
RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1153 |
|
1154 |
for (i = 1; i < items; i++) |
1155 |
av_push (coro->args, newSVsv (ST (i))); |
1156 |
} |
1157 |
OUTPUT: |
1158 |
RETVAL |
1159 |
|
1160 |
int |
1161 |
save (SV *coro, int new_save = -1) |
1162 |
CODE: |
1163 |
RETVAL = api_save (coro, new_save); |
1164 |
OUTPUT: |
1165 |
RETVAL |
1166 |
|
1167 |
void |
1168 |
_set_stacklevel (...) |
1169 |
ALIAS: |
1170 |
Coro::State::transfer = 1 |
1171 |
Coro::schedule = 2 |
1172 |
Coro::cede = 3 |
1173 |
Coro::cede_notself = 4 |
1174 |
CODE: |
1175 |
{ |
1176 |
struct transfer_args ta; |
1177 |
|
1178 |
switch (ix) |
1179 |
{ |
1180 |
case 0: |
1181 |
ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1182 |
ta.next = 0; |
1183 |
break; |
1184 |
|
1185 |
case 1: |
1186 |
if (items != 2) |
1187 |
croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
1188 |
|
1189 |
prepare_transfer (&ta, ST (0), ST (1)); |
1190 |
break; |
1191 |
|
1192 |
case 2: |
1193 |
prepare_schedule (&ta); |
1194 |
break; |
1195 |
|
1196 |
case 3: |
1197 |
prepare_cede (&ta); |
1198 |
break; |
1199 |
|
1200 |
case 4: |
1201 |
if (!prepare_cede_notself (&ta)) |
1202 |
XSRETURN_EMPTY; |
1203 |
|
1204 |
break; |
1205 |
} |
1206 |
|
1207 |
BARRIER; |
1208 |
TRANSFER (ta); |
1209 |
} |
1210 |
|
1211 |
bool |
1212 |
_destroy (SV *coro_sv) |
1213 |
CODE: |
1214 |
RETVAL = coro_state_destroy (SvSTATE (coro_sv)); |
1215 |
OUTPUT: |
1216 |
RETVAL |
1217 |
|
1218 |
void |
1219 |
_exit (code) |
1220 |
int code |
1221 |
PROTOTYPE: $ |
1222 |
CODE: |
1223 |
_exit (code); |
1224 |
|
1225 |
int |
1226 |
cctx_count () |
1227 |
CODE: |
1228 |
RETVAL = cctx_count; |
1229 |
OUTPUT: |
1230 |
RETVAL |
1231 |
|
1232 |
int |
1233 |
cctx_idle () |
1234 |
CODE: |
1235 |
RETVAL = cctx_idle; |
1236 |
OUTPUT: |
1237 |
RETVAL |
1238 |
|
1239 |
MODULE = Coro::State PACKAGE = Coro |
1240 |
|
1241 |
BOOT: |
1242 |
{ |
1243 |
int i; |
1244 |
|
1245 |
coro_stash = gv_stashpv ("Coro", TRUE); |
1246 |
|
1247 |
newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1248 |
newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1249 |
newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1250 |
newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1251 |
newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1252 |
newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1253 |
|
1254 |
coro_current = get_sv ("Coro::current", FALSE); |
1255 |
SvREADONLY_on (coro_current); |
1256 |
|
1257 |
for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1258 |
coro_ready[i] = newAV (); |
1259 |
|
1260 |
{ |
1261 |
SV *sv = perl_get_sv("Coro::API", 1); |
1262 |
|
1263 |
coroapi.schedule = api_schedule; |
1264 |
coroapi.save = api_save; |
1265 |
coroapi.cede = api_cede; |
1266 |
coroapi.cede_notself = api_cede_notself; |
1267 |
coroapi.ready = api_ready; |
1268 |
coroapi.is_ready = api_is_ready; |
1269 |
coroapi.nready = &coro_nready; |
1270 |
coroapi.current = coro_current; |
1271 |
|
1272 |
GCoroAPI = &coroapi; |
1273 |
sv_setiv (sv, (IV)&coroapi); |
1274 |
SvREADONLY_on (sv); |
1275 |
} |
1276 |
} |
1277 |
|
1278 |
void |
1279 |
_set_current (SV *current) |
1280 |
PROTOTYPE: $ |
1281 |
CODE: |
1282 |
SvREFCNT_dec (SvRV (coro_current)); |
1283 |
SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
1284 |
|
1285 |
int |
1286 |
prio (Coro::State coro, int newprio = 0) |
1287 |
ALIAS: |
1288 |
nice = 1 |
1289 |
CODE: |
1290 |
{ |
1291 |
RETVAL = coro->prio; |
1292 |
|
1293 |
if (items > 1) |
1294 |
{ |
1295 |
if (ix) |
1296 |
newprio = coro->prio - newprio; |
1297 |
|
1298 |
if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1299 |
if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1300 |
|
1301 |
coro->prio = newprio; |
1302 |
} |
1303 |
} |
1304 |
OUTPUT: |
1305 |
RETVAL |
1306 |
|
1307 |
SV * |
1308 |
ready (SV *self) |
1309 |
PROTOTYPE: $ |
1310 |
CODE: |
1311 |
RETVAL = boolSV (api_ready (self)); |
1312 |
OUTPUT: |
1313 |
RETVAL |
1314 |
|
1315 |
SV * |
1316 |
is_ready (SV *self) |
1317 |
PROTOTYPE: $ |
1318 |
CODE: |
1319 |
RETVAL = boolSV (api_is_ready (self)); |
1320 |
OUTPUT: |
1321 |
RETVAL |
1322 |
|
1323 |
int |
1324 |
nready (...) |
1325 |
PROTOTYPE: |
1326 |
CODE: |
1327 |
RETVAL = coro_nready; |
1328 |
OUTPUT: |
1329 |
RETVAL |
1330 |
|
1331 |
MODULE = Coro::State PACKAGE = Coro::AIO |
1332 |
|
1333 |
SV * |
1334 |
_get_state () |
1335 |
CODE: |
1336 |
{ |
1337 |
struct io_state *data; |
1338 |
|
1339 |
RETVAL = newSV (sizeof (struct io_state)); |
1340 |
data = (struct io_state *)SvPVX (RETVAL); |
1341 |
SvCUR_set (RETVAL, sizeof (struct io_state)); |
1342 |
SvPOK_only (RETVAL); |
1343 |
|
1344 |
data->errorno = errno; |
1345 |
data->laststype = PL_laststype; |
1346 |
data->laststatval = PL_laststatval; |
1347 |
data->statcache = PL_statcache; |
1348 |
} |
1349 |
OUTPUT: |
1350 |
RETVAL |
1351 |
|
1352 |
void |
1353 |
_set_state (char *data_) |
1354 |
PROTOTYPE: $ |
1355 |
CODE: |
1356 |
{ |
1357 |
struct io_state *data = (void *)data_; |
1358 |
|
1359 |
errno = data->errorno; |
1360 |
PL_laststype = data->laststype; |
1361 |
PL_laststatval = data->laststatval; |
1362 |
PL_statcache = data->statcache; |
1363 |
} |
1364 |
|