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 CORO_USE_VALGRIND |
37 |
# include <valgrind/valgrind.h> |
38 |
# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end)) |
39 |
#else |
40 |
# define REGISTER_STACK(cctx,start,end) |
41 |
#endif |
42 |
|
43 |
/* the maximum number of idle cctx that will be pooled */ |
44 |
#define MAX_IDLE_CCTX 8 |
45 |
|
46 |
#define PERL_VERSION_ATLEAST(a,b,c) \ |
47 |
(PERL_REVISION > (a) \ |
48 |
|| (PERL_REVISION == (a) \ |
49 |
&& (PERL_VERSION > (b) \ |
50 |
|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
51 |
|
52 |
#if !PERL_VERSION_ATLEAST (5,6,0) |
53 |
# ifndef PL_ppaddr |
54 |
# define PL_ppaddr ppaddr |
55 |
# endif |
56 |
# ifndef call_sv |
57 |
# define call_sv perl_call_sv |
58 |
# endif |
59 |
# ifndef get_sv |
60 |
# define get_sv perl_get_sv |
61 |
# endif |
62 |
# ifndef get_cv |
63 |
# define get_cv perl_get_cv |
64 |
# endif |
65 |
# ifndef IS_PADGV |
66 |
# define IS_PADGV(v) 0 |
67 |
# endif |
68 |
# ifndef IS_PADCONST |
69 |
# define IS_PADCONST(v) 0 |
70 |
# endif |
71 |
#endif |
72 |
|
73 |
/* 5.8.7 */ |
74 |
#ifndef SvRV_set |
75 |
# define SvRV_set(s,v) SvRV(s) = (v) |
76 |
#endif |
77 |
|
78 |
#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
79 |
# undef CORO_STACKGUARD |
80 |
#endif |
81 |
|
82 |
#ifndef CORO_STACKGUARD |
83 |
# define CORO_STACKGUARD 0 |
84 |
#endif |
85 |
|
86 |
/* prefer perl internal functions over our own? */ |
87 |
#ifndef CORO_PREFER_PERL_FUNCTIONS |
88 |
# define CORO_PREFER_PERL_FUNCTIONS 0 |
89 |
#endif |
90 |
|
91 |
/* The next macro should declare a variable stacklevel that contains and approximation |
92 |
* to the current C stack pointer. Its property is that it changes with each call |
93 |
* and should be unique. */ |
94 |
#define dSTACKLEVEL int stacklevel |
95 |
#define STACKLEVEL ((void *)&stacklevel) |
96 |
|
97 |
#define IN_DESTRUCT (PL_main_cv == Nullcv) |
98 |
|
99 |
#if __GNUC__ >= 3 |
100 |
# define attribute(x) __attribute__(x) |
101 |
# define BARRIER __asm__ __volatile__ ("" : : : "memory") |
102 |
#else |
103 |
# define attribute(x) |
104 |
# define BARRIER |
105 |
#endif |
106 |
|
107 |
#define NOINLINE attribute ((noinline)) |
108 |
|
109 |
#include "CoroAPI.h" |
110 |
|
111 |
#ifdef USE_ITHREADS |
112 |
static perl_mutex coro_mutex; |
113 |
# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
114 |
# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
115 |
#else |
116 |
# define LOCK (void)0 |
117 |
# define UNLOCK (void)0 |
118 |
#endif |
119 |
|
120 |
/* helper storage struct for Coro::AIO */ |
121 |
struct io_state |
122 |
{ |
123 |
int errorno; |
124 |
I32 laststype; |
125 |
int laststatval; |
126 |
Stat_t statcache; |
127 |
}; |
128 |
|
129 |
static size_t coro_stacksize = CORO_STACKSIZE; |
130 |
static struct CoroAPI coroapi; |
131 |
static AV *main_mainstack; /* used to differentiate between $main and others */ |
132 |
static HV *coro_state_stash, *coro_stash; |
133 |
static SV *coro_mortal; /* will be freed after next transfer */ |
134 |
|
135 |
static struct coro_cctx *cctx_first; |
136 |
static int cctx_count, cctx_idle; |
137 |
|
138 |
/* this is a structure representing a c-level coroutine */ |
139 |
typedef struct coro_cctx { |
140 |
struct coro_cctx *next; |
141 |
|
142 |
/* the stack */ |
143 |
void *sptr; |
144 |
size_t ssize; |
145 |
|
146 |
/* cpu state */ |
147 |
void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
148 |
JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
149 |
JMPENV *top_env; |
150 |
coro_context cctx; |
151 |
|
152 |
#if CORO_USE_VALGRIND |
153 |
int valgrind_id; |
154 |
#endif |
155 |
char inuse, mapped; |
156 |
} coro_cctx; |
157 |
|
158 |
enum { |
159 |
CF_RUNNING = 0x0001, /* coroutine is running */ |
160 |
CF_READY = 0x0002, /* coroutine is ready */ |
161 |
CF_NEW = 0x0004, /* has never been switched to */ |
162 |
CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
163 |
}; |
164 |
|
165 |
/* this is a structure representing a perl-level coroutine */ |
166 |
struct coro { |
167 |
/* the c coroutine allocated to this perl coroutine, if any */ |
168 |
coro_cctx *cctx; |
169 |
|
170 |
/* data associated with this coroutine (initial args) */ |
171 |
AV *args; |
172 |
int refcnt; |
173 |
int save; /* CORO_SAVE flags */ |
174 |
int flags; /* CF_ flags */ |
175 |
|
176 |
/* optionally saved, might be zero */ |
177 |
AV *defav; /* @_ */ |
178 |
SV *defsv; /* $_ */ |
179 |
SV *errsv; /* $@ */ |
180 |
SV *irssv; /* $/ */ |
181 |
SV *irssv_sv; /* real $/ cache */ |
182 |
|
183 |
#define VAR(name,type) type name; |
184 |
# include "state.h" |
185 |
#undef VAR |
186 |
|
187 |
/* coro process data */ |
188 |
int prio; |
189 |
}; |
190 |
|
191 |
typedef struct coro *Coro__State; |
192 |
typedef struct coro *Coro__State_or_hashref; |
193 |
|
194 |
/** Coro ********************************************************************/ |
195 |
|
196 |
#define PRIO_MAX 3 |
197 |
#define PRIO_HIGH 1 |
198 |
#define PRIO_NORMAL 0 |
199 |
#define PRIO_LOW -1 |
200 |
#define PRIO_IDLE -3 |
201 |
#define PRIO_MIN -4 |
202 |
|
203 |
/* for Coro.pm */ |
204 |
static SV *coro_current; |
205 |
static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
206 |
static int coro_nready; |
207 |
|
208 |
/** lowlevel stuff **********************************************************/ |
209 |
|
210 |
static AV * |
211 |
coro_clone_padlist (CV *cv) |
212 |
{ |
213 |
AV *padlist = CvPADLIST (cv); |
214 |
AV *newpadlist, *newpad; |
215 |
|
216 |
newpadlist = newAV (); |
217 |
AvREAL_off (newpadlist); |
218 |
#if PERL_VERSION_ATLEAST (5,9,0) |
219 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
220 |
#else |
221 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
222 |
#endif |
223 |
newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
224 |
--AvFILLp (padlist); |
225 |
|
226 |
av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
227 |
av_store (newpadlist, 1, (SV *)newpad); |
228 |
|
229 |
return newpadlist; |
230 |
} |
231 |
|
232 |
static void |
233 |
free_padlist (AV *padlist) |
234 |
{ |
235 |
/* may be during global destruction */ |
236 |
if (SvREFCNT (padlist)) |
237 |
{ |
238 |
I32 i = AvFILLp (padlist); |
239 |
while (i >= 0) |
240 |
{ |
241 |
SV **svp = av_fetch (padlist, i--, FALSE); |
242 |
if (svp) |
243 |
{ |
244 |
SV *sv; |
245 |
while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
246 |
SvREFCNT_dec (sv); |
247 |
|
248 |
SvREFCNT_dec (*svp); |
249 |
} |
250 |
} |
251 |
|
252 |
SvREFCNT_dec ((SV*)padlist); |
253 |
} |
254 |
} |
255 |
|
256 |
static int |
257 |
coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
258 |
{ |
259 |
AV *padlist; |
260 |
AV *av = (AV *)mg->mg_obj; |
261 |
|
262 |
/* casting is fun. */ |
263 |
while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
264 |
free_padlist (padlist); |
265 |
|
266 |
SvREFCNT_dec (av); |
267 |
|
268 |
return 0; |
269 |
} |
270 |
|
271 |
#define PERL_MAGIC_coro PERL_MAGIC_ext |
272 |
|
273 |
static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
274 |
|
275 |
#define CORO_MAGIC(cv) \ |
276 |
SvMAGIC (cv) \ |
277 |
? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
278 |
? SvMAGIC (cv) \ |
279 |
: mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
280 |
: 0 |
281 |
|
282 |
/* the next two functions merely cache the padlists */ |
283 |
static void |
284 |
get_padlist (CV *cv) |
285 |
{ |
286 |
MAGIC *mg = CORO_MAGIC (cv); |
287 |
AV *av; |
288 |
|
289 |
if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
290 |
CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
291 |
else |
292 |
{ |
293 |
#if CORO_PREFER_PERL_FUNCTIONS |
294 |
/* this is probably cleaner, but also slower? */ |
295 |
CV *cp = Perl_cv_clone (cv); |
296 |
CvPADLIST (cv) = CvPADLIST (cp); |
297 |
CvPADLIST (cp) = 0; |
298 |
SvREFCNT_dec (cp); |
299 |
#else |
300 |
CvPADLIST (cv) = coro_clone_padlist (cv); |
301 |
#endif |
302 |
} |
303 |
} |
304 |
|
305 |
static void |
306 |
put_padlist (CV *cv) |
307 |
{ |
308 |
MAGIC *mg = CORO_MAGIC (cv); |
309 |
AV *av; |
310 |
|
311 |
if (!mg) |
312 |
{ |
313 |
sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
314 |
mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
315 |
mg->mg_virtual = &vtbl_coro; |
316 |
mg->mg_obj = (SV *)newAV (); |
317 |
} |
318 |
|
319 |
av = (AV *)mg->mg_obj; |
320 |
|
321 |
if (AvFILLp (av) >= AvMAX (av)) |
322 |
av_extend (av, AvMAX (av) + 1); |
323 |
|
324 |
AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
325 |
} |
326 |
|
327 |
/** load & save, init *******************************************************/ |
328 |
|
329 |
#define SB do { |
330 |
#define SE } while (0) |
331 |
|
332 |
#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
333 |
|
334 |
static void |
335 |
load_perl (Coro__State c) |
336 |
{ |
337 |
#define VAR(name,type) PL_ ## name = c->name; |
338 |
# include "state.h" |
339 |
#undef VAR |
340 |
|
341 |
if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
342 |
if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
343 |
if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
344 |
if (c->irssv) |
345 |
{ |
346 |
if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv)) |
347 |
SvREFCNT_dec (c->irssv); |
348 |
else |
349 |
{ |
350 |
REPLACE_SV (PL_rs, c->irssv); |
351 |
if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0); |
352 |
sv_setsv (c->irssv_sv, PL_rs); |
353 |
} |
354 |
} |
355 |
|
356 |
{ |
357 |
dSP; |
358 |
CV *cv; |
359 |
|
360 |
/* now do the ugly restore mess */ |
361 |
while ((cv = (CV *)POPs)) |
362 |
{ |
363 |
put_padlist (cv); /* mark this padlist as available */ |
364 |
CvDEPTH (cv) = PTR2IV (POPs); |
365 |
CvPADLIST (cv) = (AV *)POPs; |
366 |
} |
367 |
|
368 |
PUTBACK; |
369 |
} |
370 |
assert (!PL_comppad || AvARRAY (PL_comppad));//D |
371 |
} |
372 |
|
373 |
static void |
374 |
save_perl (Coro__State c) |
375 |
{ |
376 |
assert (!PL_comppad || AvARRAY (PL_comppad));//D |
377 |
{ |
378 |
dSP; |
379 |
I32 cxix = cxstack_ix; |
380 |
PERL_CONTEXT *ccstk = cxstack; |
381 |
PERL_SI *top_si = PL_curstackinfo; |
382 |
|
383 |
/* |
384 |
* the worst thing you can imagine happens first - we have to save |
385 |
* (and reinitialize) all cv's in the whole callchain :( |
386 |
*/ |
387 |
|
388 |
EXTEND (SP, 3 + 1); |
389 |
PUSHs (Nullsv); |
390 |
/* this loop was inspired by pp_caller */ |
391 |
for (;;) |
392 |
{ |
393 |
while (cxix >= 0) |
394 |
{ |
395 |
PERL_CONTEXT *cx = &ccstk[cxix--]; |
396 |
|
397 |
if (CxTYPE (cx) == CXt_SUB) |
398 |
{ |
399 |
CV *cv = cx->blk_sub.cv; |
400 |
|
401 |
if (CvDEPTH (cv)) |
402 |
{ |
403 |
EXTEND (SP, 3); |
404 |
PUSHs ((SV *)CvPADLIST (cv)); |
405 |
PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
406 |
PUSHs ((SV *)cv); |
407 |
|
408 |
CvDEPTH (cv) = 0; |
409 |
get_padlist (cv); |
410 |
} |
411 |
} |
412 |
} |
413 |
|
414 |
if (top_si->si_type == PERLSI_MAIN) |
415 |
break; |
416 |
|
417 |
top_si = top_si->si_prev; |
418 |
ccstk = top_si->si_cxstack; |
419 |
cxix = top_si->si_cxix; |
420 |
} |
421 |
|
422 |
PUTBACK; |
423 |
} |
424 |
|
425 |
c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
426 |
c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
427 |
c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
428 |
c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; |
429 |
|
430 |
#define VAR(name,type)c->name = PL_ ## name; |
431 |
# include "state.h" |
432 |
#undef VAR |
433 |
} |
434 |
|
435 |
/* |
436 |
* allocate various perl stacks. This is an exact copy |
437 |
* of perl.c:init_stacks, except that it uses less memory |
438 |
* on the (sometimes correct) assumption that coroutines do |
439 |
* not usually need a lot of stackspace. |
440 |
*/ |
441 |
#if CORO_PREFER_PERL_FUNCTIONS |
442 |
# define coro_init_stacks init_stacks |
443 |
#else |
444 |
static void |
445 |
coro_init_stacks () |
446 |
{ |
447 |
PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
448 |
PL_curstackinfo->si_type = PERLSI_MAIN; |
449 |
PL_curstack = PL_curstackinfo->si_stack; |
450 |
PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
451 |
|
452 |
PL_stack_base = AvARRAY(PL_curstack); |
453 |
PL_stack_sp = PL_stack_base; |
454 |
PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
455 |
|
456 |
New(50,PL_tmps_stack,128,SV*); |
457 |
PL_tmps_floor = -1; |
458 |
PL_tmps_ix = -1; |
459 |
PL_tmps_max = 128; |
460 |
|
461 |
New(54,PL_markstack,32,I32); |
462 |
PL_markstack_ptr = PL_markstack; |
463 |
PL_markstack_max = PL_markstack + 32; |
464 |
|
465 |
#ifdef SET_MARK_OFFSET |
466 |
SET_MARK_OFFSET; |
467 |
#endif |
468 |
|
469 |
New(54,PL_scopestack,32,I32); |
470 |
PL_scopestack_ix = 0; |
471 |
PL_scopestack_max = 32; |
472 |
|
473 |
New(54,PL_savestack,64,ANY); |
474 |
PL_savestack_ix = 0; |
475 |
PL_savestack_max = 64; |
476 |
|
477 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
478 |
New(54,PL_retstack,16,OP*); |
479 |
PL_retstack_ix = 0; |
480 |
PL_retstack_max = 16; |
481 |
#endif |
482 |
} |
483 |
#endif |
484 |
|
485 |
/* |
486 |
* destroy the stacks, the callchain etc... |
487 |
*/ |
488 |
static void |
489 |
coro_destroy_stacks () |
490 |
{ |
491 |
if (!IN_DESTRUCT) |
492 |
{ |
493 |
/* restore all saved variables and stuff */ |
494 |
LEAVE_SCOPE (0); |
495 |
assert (PL_tmps_floor == -1); |
496 |
|
497 |
/* free all temporaries */ |
498 |
FREETMPS; |
499 |
assert (PL_tmps_ix == -1); |
500 |
|
501 |
/* unwind all extra stacks */ |
502 |
POPSTACK_TO (PL_mainstack); |
503 |
|
504 |
/* unwind main stack */ |
505 |
dounwind (-1); |
506 |
} |
507 |
|
508 |
while (PL_curstackinfo->si_next) |
509 |
PL_curstackinfo = PL_curstackinfo->si_next; |
510 |
|
511 |
while (PL_curstackinfo) |
512 |
{ |
513 |
PERL_SI *p = PL_curstackinfo->si_prev; |
514 |
|
515 |
if (!IN_DESTRUCT) |
516 |
SvREFCNT_dec (PL_curstackinfo->si_stack); |
517 |
|
518 |
Safefree (PL_curstackinfo->si_cxstack); |
519 |
Safefree (PL_curstackinfo); |
520 |
PL_curstackinfo = p; |
521 |
} |
522 |
|
523 |
Safefree (PL_tmps_stack); |
524 |
Safefree (PL_markstack); |
525 |
Safefree (PL_scopestack); |
526 |
Safefree (PL_savestack); |
527 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
528 |
Safefree (PL_retstack); |
529 |
#endif |
530 |
} |
531 |
|
532 |
/** coroutine stack handling ************************************************/ |
533 |
|
534 |
static void |
535 |
setup_coro (struct coro *coro) |
536 |
{ |
537 |
/* |
538 |
* emulate part of the perl startup here. |
539 |
*/ |
540 |
|
541 |
coro_init_stacks (); |
542 |
|
543 |
PL_curcop = &PL_compiling; |
544 |
PL_in_eval = EVAL_NULL; |
545 |
PL_comppad = 0; |
546 |
PL_curpm = 0; |
547 |
PL_localizing = 0; |
548 |
PL_dirty = 0; |
549 |
PL_restartop = 0; |
550 |
|
551 |
{ |
552 |
dSP; |
553 |
LOGOP myop; |
554 |
|
555 |
SvREFCNT_dec (GvAV (PL_defgv)); |
556 |
GvAV (PL_defgv) = coro->args; coro->args = 0; |
557 |
|
558 |
Zero (&myop, 1, LOGOP); |
559 |
myop.op_next = Nullop; |
560 |
myop.op_flags = OPf_WANT_VOID; |
561 |
|
562 |
PUSHMARK (SP); |
563 |
XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
564 |
PUTBACK; |
565 |
PL_op = (OP *)&myop; |
566 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
567 |
SPAGAIN; |
568 |
} |
569 |
|
570 |
ENTER; /* necessary e.g. for dounwind */ |
571 |
} |
572 |
|
573 |
static void |
574 |
free_coro_mortal () |
575 |
{ |
576 |
if (coro_mortal) |
577 |
{ |
578 |
SvREFCNT_dec (coro_mortal); |
579 |
coro_mortal = 0; |
580 |
} |
581 |
} |
582 |
|
583 |
/* inject a fake call to Coro::State::_cctx_init into the execution */ |
584 |
static void NOINLINE |
585 |
prepare_cctx (coro_cctx *cctx) |
586 |
{ |
587 |
dSP; |
588 |
LOGOP myop; |
589 |
|
590 |
Zero (&myop, 1, LOGOP); |
591 |
myop.op_next = PL_op; |
592 |
myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
593 |
|
594 |
PUSHMARK (SP); |
595 |
EXTEND (SP, 2); |
596 |
PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
597 |
PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
598 |
PUTBACK; |
599 |
PL_op = (OP *)&myop; |
600 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
601 |
SPAGAIN; |
602 |
} |
603 |
|
604 |
static void |
605 |
coro_run (void *arg) |
606 |
{ |
607 |
/* coro_run is the alternative tail of transfer(), so unlock here. */ |
608 |
UNLOCK; |
609 |
|
610 |
/* |
611 |
* this is a _very_ stripped down perl interpreter ;) |
612 |
*/ |
613 |
PL_top_env = &PL_start_env; |
614 |
|
615 |
/* inject call to cctx_init */ |
616 |
prepare_cctx ((coro_cctx *)arg); |
617 |
|
618 |
/* somebody will hit me for both perl_run and PL_restartop */ |
619 |
PL_restartop = PL_op; |
620 |
perl_run (PL_curinterp); |
621 |
|
622 |
fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
623 |
abort (); |
624 |
} |
625 |
|
626 |
static coro_cctx * |
627 |
cctx_new () |
628 |
{ |
629 |
coro_cctx *cctx; |
630 |
void *stack_start; |
631 |
size_t stack_size; |
632 |
|
633 |
++cctx_count; |
634 |
|
635 |
Newz (0, cctx, 1, coro_cctx); |
636 |
|
637 |
#if HAVE_MMAP |
638 |
|
639 |
cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
640 |
/* mmap supposedly does allocate-on-write for us */ |
641 |
cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
642 |
|
643 |
if (cctx->sptr != (void *)-1) |
644 |
{ |
645 |
# if CORO_STACKGUARD |
646 |
mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
647 |
# endif |
648 |
stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; |
649 |
stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
650 |
cctx->mapped = 1; |
651 |
} |
652 |
else |
653 |
#endif |
654 |
{ |
655 |
cctx->ssize = coro_stacksize * (long)sizeof (long); |
656 |
New (0, cctx->sptr, coro_stacksize, long); |
657 |
|
658 |
if (!cctx->sptr) |
659 |
{ |
660 |
perror ("FATAL: unable to allocate stack for coroutine"); |
661 |
_exit (EXIT_FAILURE); |
662 |
} |
663 |
|
664 |
stack_start = cctx->sptr; |
665 |
stack_size = cctx->ssize; |
666 |
} |
667 |
|
668 |
REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); |
669 |
coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); |
670 |
|
671 |
return cctx; |
672 |
} |
673 |
|
674 |
static void |
675 |
cctx_destroy (coro_cctx *cctx) |
676 |
{ |
677 |
if (!cctx) |
678 |
return; |
679 |
|
680 |
--cctx_count; |
681 |
|
682 |
#if CORO_USE_VALGRIND |
683 |
VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
684 |
#endif |
685 |
|
686 |
#if HAVE_MMAP |
687 |
if (cctx->mapped) |
688 |
munmap (cctx->sptr, cctx->ssize); |
689 |
else |
690 |
#endif |
691 |
Safefree (cctx->sptr); |
692 |
|
693 |
Safefree (cctx); |
694 |
} |
695 |
|
696 |
static coro_cctx * |
697 |
cctx_get () |
698 |
{ |
699 |
while (cctx_first) |
700 |
{ |
701 |
coro_cctx *cctx = cctx_first; |
702 |
cctx_first = cctx->next; |
703 |
--cctx_idle; |
704 |
|
705 |
if (cctx->ssize >= coro_stacksize) |
706 |
return cctx; |
707 |
|
708 |
cctx_destroy (cctx); |
709 |
} |
710 |
|
711 |
PL_op = PL_op->op_next; |
712 |
return cctx_new (); |
713 |
} |
714 |
|
715 |
static void |
716 |
cctx_put (coro_cctx *cctx) |
717 |
{ |
718 |
/* free another cctx if overlimit */ |
719 |
if (cctx_idle >= MAX_IDLE_CCTX) |
720 |
{ |
721 |
coro_cctx *first = cctx_first; |
722 |
cctx_first = first->next; |
723 |
--cctx_idle; |
724 |
|
725 |
assert (!first->inuse); |
726 |
cctx_destroy (first); |
727 |
} |
728 |
|
729 |
++cctx_idle; |
730 |
cctx->next = cctx_first; |
731 |
cctx_first = cctx; |
732 |
} |
733 |
|
734 |
/** coroutine switching *****************************************************/ |
735 |
|
736 |
/* never call directly, always through the coro_state_transfer global variable */ |
737 |
static void NOINLINE |
738 |
transfer (struct coro *prev, struct coro *next) |
739 |
{ |
740 |
dSTACKLEVEL; |
741 |
|
742 |
/* sometimes transfer is only called to set idle_sp */ |
743 |
if (!next) |
744 |
{ |
745 |
((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
746 |
assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
747 |
} |
748 |
else if (prev != next) |
749 |
{ |
750 |
coro_cctx *prev__cctx; |
751 |
|
752 |
if (prev->flags & CF_NEW) |
753 |
{ |
754 |
/* create a new empty context */ |
755 |
Newz (0, prev->cctx, 1, coro_cctx); |
756 |
prev->cctx->inuse = 1; |
757 |
prev->flags &= ~CF_NEW; |
758 |
prev->flags |= CF_RUNNING; |
759 |
} |
760 |
|
761 |
/*TODO: must not croak here */ |
762 |
if (!prev->flags & CF_RUNNING) |
763 |
croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
764 |
|
765 |
if (next->flags & CF_RUNNING) |
766 |
croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
767 |
|
768 |
if (next->flags & CF_DESTROYED) |
769 |
croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
770 |
|
771 |
prev->flags &= ~CF_RUNNING; |
772 |
next->flags |= CF_RUNNING; |
773 |
|
774 |
LOCK; |
775 |
|
776 |
if (next->flags & CF_NEW) |
777 |
{ |
778 |
/* need to start coroutine */ |
779 |
next->flags &= ~CF_NEW; |
780 |
/* first get rid of the old state */ |
781 |
save_perl (prev); |
782 |
/* setup coroutine call */ |
783 |
setup_coro (next); |
784 |
/* need a new stack */ |
785 |
assert (!next->cctx); |
786 |
} |
787 |
else |
788 |
{ |
789 |
/* coroutine already started */ |
790 |
save_perl (prev); |
791 |
load_perl (next); |
792 |
} |
793 |
|
794 |
prev__cctx = prev->cctx; |
795 |
|
796 |
/* possibly "free" the cctx */ |
797 |
if (prev__cctx->idle_sp == STACKLEVEL) |
798 |
{ |
799 |
/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
800 |
assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
801 |
|
802 |
prev->cctx = 0; |
803 |
|
804 |
cctx_put (prev__cctx); |
805 |
prev__cctx->inuse = 0; |
806 |
} |
807 |
|
808 |
if (!next->cctx) |
809 |
{ |
810 |
next->cctx = cctx_get (); |
811 |
assert (!next->cctx->inuse); |
812 |
next->cctx->inuse = 1; |
813 |
} |
814 |
|
815 |
if (prev__cctx != next->cctx) |
816 |
{ |
817 |
prev__cctx->top_env = PL_top_env; |
818 |
PL_top_env = next->cctx->top_env; |
819 |
coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
820 |
} |
821 |
|
822 |
free_coro_mortal (); |
823 |
UNLOCK; |
824 |
} |
825 |
} |
826 |
|
827 |
struct transfer_args |
828 |
{ |
829 |
struct coro *prev, *next; |
830 |
}; |
831 |
|
832 |
#define TRANSFER(ta) transfer ((ta).prev, (ta).next) |
833 |
|
834 |
/** high level stuff ********************************************************/ |
835 |
|
836 |
static int |
837 |
coro_state_destroy (struct coro *coro) |
838 |
{ |
839 |
if (coro->flags & CF_DESTROYED) |
840 |
return 0; |
841 |
|
842 |
coro->flags |= CF_DESTROYED; |
843 |
|
844 |
if (coro->flags & CF_READY) |
845 |
{ |
846 |
/* reduce nready, as destroying a ready coro effectively unreadies it */ |
847 |
/* alternative: look through all ready queues and remove the coro */ |
848 |
LOCK; |
849 |
--coro_nready; |
850 |
UNLOCK; |
851 |
} |
852 |
else |
853 |
coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
854 |
|
855 |
if (coro->mainstack && coro->mainstack != main_mainstack) |
856 |
{ |
857 |
struct coro temp; |
858 |
|
859 |
assert (!(coro->flags & CF_RUNNING)); |
860 |
|
861 |
Zero (&temp, 1, struct coro); |
862 |
temp.save = CORO_SAVE_ALL; |
863 |
|
864 |
if (coro->flags & CF_RUNNING) |
865 |
croak ("FATAL: tried to destroy currently running coroutine"); |
866 |
|
867 |
save_perl (&temp); |
868 |
load_perl (coro); |
869 |
|
870 |
coro_destroy_stacks (); |
871 |
|
872 |
load_perl (&temp); /* this will get rid of defsv etc.. */ |
873 |
|
874 |
coro->mainstack = 0; |
875 |
} |
876 |
|
877 |
cctx_destroy (coro->cctx); |
878 |
SvREFCNT_dec (coro->args); |
879 |
|
880 |
return 1; |
881 |
} |
882 |
|
883 |
static int |
884 |
coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
885 |
{ |
886 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
887 |
mg->mg_ptr = 0; |
888 |
|
889 |
if (--coro->refcnt < 0) |
890 |
{ |
891 |
coro_state_destroy (coro); |
892 |
Safefree (coro); |
893 |
} |
894 |
|
895 |
return 0; |
896 |
} |
897 |
|
898 |
static int |
899 |
coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
900 |
{ |
901 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
902 |
|
903 |
++coro->refcnt; |
904 |
|
905 |
return 0; |
906 |
} |
907 |
|
908 |
static MGVTBL coro_state_vtbl = { |
909 |
0, 0, 0, 0, |
910 |
coro_state_free, |
911 |
0, |
912 |
#ifdef MGf_DUP |
913 |
coro_state_dup, |
914 |
#else |
915 |
# define MGf_DUP 0 |
916 |
#endif |
917 |
}; |
918 |
|
919 |
static struct coro * |
920 |
SvSTATE (SV *coro) |
921 |
{ |
922 |
HV *stash; |
923 |
MAGIC *mg; |
924 |
|
925 |
if (SvROK (coro)) |
926 |
coro = SvRV (coro); |
927 |
|
928 |
stash = SvSTASH (coro); |
929 |
if (stash != coro_stash && stash != coro_state_stash) |
930 |
{ |
931 |
/* very slow, but rare, check */ |
932 |
if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
933 |
croak ("Coro::State object required"); |
934 |
} |
935 |
|
936 |
mg = CORO_MAGIC (coro); |
937 |
return (struct coro *)mg->mg_ptr; |
938 |
} |
939 |
|
940 |
static void |
941 |
prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
942 |
{ |
943 |
ta->prev = SvSTATE (prev_sv); |
944 |
ta->next = SvSTATE (next_sv); |
945 |
} |
946 |
|
947 |
static void |
948 |
api_transfer (SV *prev_sv, SV *next_sv) |
949 |
{ |
950 |
struct transfer_args ta; |
951 |
|
952 |
prepare_transfer (&ta, prev_sv, next_sv); |
953 |
TRANSFER (ta); |
954 |
} |
955 |
|
956 |
static int |
957 |
api_save (SV *coro_sv, int new_save) |
958 |
{ |
959 |
struct coro *coro = SvSTATE (coro_sv); |
960 |
int old_save = coro->save; |
961 |
|
962 |
if (new_save >= 0) |
963 |
coro->save = new_save; |
964 |
|
965 |
return old_save; |
966 |
} |
967 |
|
968 |
/** Coro ********************************************************************/ |
969 |
|
970 |
static void |
971 |
coro_enq (SV *coro_sv) |
972 |
{ |
973 |
av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
974 |
} |
975 |
|
976 |
static SV * |
977 |
coro_deq (int min_prio) |
978 |
{ |
979 |
int prio = PRIO_MAX - PRIO_MIN; |
980 |
|
981 |
min_prio -= PRIO_MIN; |
982 |
if (min_prio < 0) |
983 |
min_prio = 0; |
984 |
|
985 |
for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
986 |
if (AvFILLp (coro_ready [prio]) >= 0) |
987 |
return av_shift (coro_ready [prio]); |
988 |
|
989 |
return 0; |
990 |
} |
991 |
|
992 |
static int |
993 |
api_ready (SV *coro_sv) |
994 |
{ |
995 |
struct coro *coro; |
996 |
|
997 |
if (SvROK (coro_sv)) |
998 |
coro_sv = SvRV (coro_sv); |
999 |
|
1000 |
coro = SvSTATE (coro_sv); |
1001 |
|
1002 |
if (coro->flags & CF_READY) |
1003 |
return 0; |
1004 |
|
1005 |
coro->flags |= CF_READY; |
1006 |
|
1007 |
LOCK; |
1008 |
coro_enq (SvREFCNT_inc (coro_sv)); |
1009 |
++coro_nready; |
1010 |
UNLOCK; |
1011 |
|
1012 |
return 1; |
1013 |
} |
1014 |
|
1015 |
static int |
1016 |
api_is_ready (SV *coro_sv) |
1017 |
{ |
1018 |
return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1019 |
} |
1020 |
|
1021 |
static void |
1022 |
prepare_schedule (struct transfer_args *ta) |
1023 |
{ |
1024 |
SV *prev_sv, *next_sv; |
1025 |
|
1026 |
for (;;) |
1027 |
{ |
1028 |
LOCK; |
1029 |
next_sv = coro_deq (PRIO_MIN); |
1030 |
|
1031 |
/* nothing to schedule: call the idle handler */ |
1032 |
if (!next_sv) |
1033 |
{ |
1034 |
dSP; |
1035 |
UNLOCK; |
1036 |
|
1037 |
ENTER; |
1038 |
SAVETMPS; |
1039 |
|
1040 |
PUSHMARK (SP); |
1041 |
PUTBACK; |
1042 |
call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
1043 |
|
1044 |
FREETMPS; |
1045 |
LEAVE; |
1046 |
continue; |
1047 |
} |
1048 |
|
1049 |
ta->next = SvSTATE (next_sv); |
1050 |
|
1051 |
/* cannot transfer to destroyed coros, skip and look for next */ |
1052 |
if (ta->next->flags & CF_DESTROYED) |
1053 |
{ |
1054 |
UNLOCK; |
1055 |
SvREFCNT_dec (next_sv); |
1056 |
/* coro_nready is already taken care of by destroy */ |
1057 |
continue; |
1058 |
} |
1059 |
|
1060 |
--coro_nready; |
1061 |
UNLOCK; |
1062 |
break; |
1063 |
} |
1064 |
|
1065 |
/* free this only after the transfer */ |
1066 |
prev_sv = SvRV (coro_current); |
1067 |
SvRV_set (coro_current, next_sv); |
1068 |
ta->prev = SvSTATE (prev_sv); |
1069 |
|
1070 |
assert (ta->next->flags & CF_READY); |
1071 |
ta->next->flags &= ~CF_READY; |
1072 |
|
1073 |
LOCK; |
1074 |
free_coro_mortal (); |
1075 |
coro_mortal = prev_sv; |
1076 |
UNLOCK; |
1077 |
} |
1078 |
|
1079 |
static void |
1080 |
prepare_cede (struct transfer_args *ta) |
1081 |
{ |
1082 |
api_ready (coro_current); |
1083 |
prepare_schedule (ta); |
1084 |
} |
1085 |
|
1086 |
static int |
1087 |
prepare_cede_notself (struct transfer_args *ta) |
1088 |
{ |
1089 |
if (coro_nready) |
1090 |
{ |
1091 |
SV *prev = SvRV (coro_current); |
1092 |
prepare_schedule (ta); |
1093 |
api_ready (prev); |
1094 |
return 1; |
1095 |
} |
1096 |
else |
1097 |
return 0; |
1098 |
} |
1099 |
|
1100 |
static void |
1101 |
api_schedule (void) |
1102 |
{ |
1103 |
struct transfer_args ta; |
1104 |
|
1105 |
prepare_schedule (&ta); |
1106 |
TRANSFER (ta); |
1107 |
} |
1108 |
|
1109 |
static int |
1110 |
api_cede (void) |
1111 |
{ |
1112 |
struct transfer_args ta; |
1113 |
|
1114 |
prepare_cede (&ta); |
1115 |
|
1116 |
if (ta.prev != ta.next) |
1117 |
{ |
1118 |
TRANSFER (ta); |
1119 |
return 1; |
1120 |
} |
1121 |
else |
1122 |
return 0; |
1123 |
} |
1124 |
|
1125 |
static int |
1126 |
api_cede_notself (void) |
1127 |
{ |
1128 |
struct transfer_args ta; |
1129 |
|
1130 |
if (prepare_cede_notself (&ta)) |
1131 |
{ |
1132 |
TRANSFER (ta); |
1133 |
return 1; |
1134 |
} |
1135 |
else |
1136 |
return 0; |
1137 |
} |
1138 |
|
1139 |
MODULE = Coro::State PACKAGE = Coro::State |
1140 |
|
1141 |
PROTOTYPES: DISABLE |
1142 |
|
1143 |
BOOT: |
1144 |
{ |
1145 |
#ifdef USE_ITHREADS |
1146 |
MUTEX_INIT (&coro_mutex); |
1147 |
#endif |
1148 |
BOOT_PAGESIZE; |
1149 |
|
1150 |
coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1151 |
|
1152 |
newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); |
1153 |
newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); |
1154 |
newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV)); |
1155 |
newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV)); |
1156 |
newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); |
1157 |
|
1158 |
main_mainstack = PL_mainstack; |
1159 |
|
1160 |
coroapi.ver = CORO_API_VERSION; |
1161 |
coroapi.transfer = api_transfer; |
1162 |
|
1163 |
assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1164 |
} |
1165 |
|
1166 |
SV * |
1167 |
new (char *klass, ...) |
1168 |
CODE: |
1169 |
{ |
1170 |
struct coro *coro; |
1171 |
HV *hv; |
1172 |
int i; |
1173 |
|
1174 |
Newz (0, coro, 1, struct coro); |
1175 |
coro->args = newAV (); |
1176 |
coro->save = CORO_SAVE_ALL; |
1177 |
coro->flags = CF_NEW; |
1178 |
|
1179 |
hv = newHV (); |
1180 |
sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1181 |
RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1182 |
|
1183 |
for (i = 1; i < items; i++) |
1184 |
av_push (coro->args, newSVsv (ST (i))); |
1185 |
} |
1186 |
OUTPUT: |
1187 |
RETVAL |
1188 |
|
1189 |
int |
1190 |
save (SV *coro, int new_save = -1) |
1191 |
CODE: |
1192 |
RETVAL = api_save (coro, new_save); |
1193 |
OUTPUT: |
1194 |
RETVAL |
1195 |
|
1196 |
void |
1197 |
_set_stacklevel (...) |
1198 |
ALIAS: |
1199 |
Coro::State::transfer = 1 |
1200 |
Coro::schedule = 2 |
1201 |
Coro::cede = 3 |
1202 |
Coro::cede_notself = 4 |
1203 |
CODE: |
1204 |
{ |
1205 |
struct transfer_args ta; |
1206 |
|
1207 |
switch (ix) |
1208 |
{ |
1209 |
case 0: |
1210 |
ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1211 |
ta.next = 0; |
1212 |
break; |
1213 |
|
1214 |
case 1: |
1215 |
if (items != 2) |
1216 |
croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
1217 |
|
1218 |
prepare_transfer (&ta, ST (0), ST (1)); |
1219 |
break; |
1220 |
|
1221 |
case 2: |
1222 |
prepare_schedule (&ta); |
1223 |
break; |
1224 |
|
1225 |
case 3: |
1226 |
prepare_cede (&ta); |
1227 |
break; |
1228 |
|
1229 |
case 4: |
1230 |
if (!prepare_cede_notself (&ta)) |
1231 |
XSRETURN_EMPTY; |
1232 |
|
1233 |
break; |
1234 |
} |
1235 |
|
1236 |
BARRIER; |
1237 |
TRANSFER (ta); |
1238 |
|
1239 |
if (GIMME_V != G_VOID && ta.next != ta.prev) |
1240 |
XSRETURN_YES; |
1241 |
} |
1242 |
|
1243 |
bool |
1244 |
_destroy (SV *coro_sv) |
1245 |
CODE: |
1246 |
RETVAL = coro_state_destroy (SvSTATE (coro_sv)); |
1247 |
OUTPUT: |
1248 |
RETVAL |
1249 |
|
1250 |
void |
1251 |
_exit (code) |
1252 |
int code |
1253 |
PROTOTYPE: $ |
1254 |
CODE: |
1255 |
_exit (code); |
1256 |
|
1257 |
int |
1258 |
cctx_stacksize (int new_stacksize = 0) |
1259 |
CODE: |
1260 |
RETVAL = coro_stacksize; |
1261 |
if (new_stacksize) |
1262 |
coro_stacksize = new_stacksize; |
1263 |
OUTPUT: |
1264 |
RETVAL |
1265 |
|
1266 |
int |
1267 |
cctx_count () |
1268 |
CODE: |
1269 |
RETVAL = cctx_count; |
1270 |
OUTPUT: |
1271 |
RETVAL |
1272 |
|
1273 |
int |
1274 |
cctx_idle () |
1275 |
CODE: |
1276 |
RETVAL = cctx_idle; |
1277 |
OUTPUT: |
1278 |
RETVAL |
1279 |
|
1280 |
MODULE = Coro::State PACKAGE = Coro |
1281 |
|
1282 |
BOOT: |
1283 |
{ |
1284 |
int i; |
1285 |
|
1286 |
coro_stash = gv_stashpv ("Coro", TRUE); |
1287 |
|
1288 |
newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1289 |
newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1290 |
newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1291 |
newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1292 |
newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1293 |
newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1294 |
|
1295 |
coro_current = get_sv ("Coro::current", FALSE); |
1296 |
SvREADONLY_on (coro_current); |
1297 |
|
1298 |
for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1299 |
coro_ready[i] = newAV (); |
1300 |
|
1301 |
{ |
1302 |
SV *sv = perl_get_sv("Coro::API", 1); |
1303 |
|
1304 |
coroapi.schedule = api_schedule; |
1305 |
coroapi.save = api_save; |
1306 |
coroapi.cede = api_cede; |
1307 |
coroapi.cede_notself = api_cede_notself; |
1308 |
coroapi.ready = api_ready; |
1309 |
coroapi.is_ready = api_is_ready; |
1310 |
coroapi.nready = &coro_nready; |
1311 |
coroapi.current = coro_current; |
1312 |
|
1313 |
GCoroAPI = &coroapi; |
1314 |
sv_setiv (sv, (IV)&coroapi); |
1315 |
SvREADONLY_on (sv); |
1316 |
} |
1317 |
} |
1318 |
|
1319 |
void |
1320 |
_set_current (SV *current) |
1321 |
PROTOTYPE: $ |
1322 |
CODE: |
1323 |
SvREFCNT_dec (SvRV (coro_current)); |
1324 |
SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
1325 |
|
1326 |
int |
1327 |
prio (Coro::State coro, int newprio = 0) |
1328 |
ALIAS: |
1329 |
nice = 1 |
1330 |
CODE: |
1331 |
{ |
1332 |
RETVAL = coro->prio; |
1333 |
|
1334 |
if (items > 1) |
1335 |
{ |
1336 |
if (ix) |
1337 |
newprio = coro->prio - newprio; |
1338 |
|
1339 |
if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1340 |
if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1341 |
|
1342 |
coro->prio = newprio; |
1343 |
} |
1344 |
} |
1345 |
OUTPUT: |
1346 |
RETVAL |
1347 |
|
1348 |
SV * |
1349 |
ready (SV *self) |
1350 |
PROTOTYPE: $ |
1351 |
CODE: |
1352 |
RETVAL = boolSV (api_ready (self)); |
1353 |
OUTPUT: |
1354 |
RETVAL |
1355 |
|
1356 |
SV * |
1357 |
is_ready (SV *self) |
1358 |
PROTOTYPE: $ |
1359 |
CODE: |
1360 |
RETVAL = boolSV (api_is_ready (self)); |
1361 |
OUTPUT: |
1362 |
RETVAL |
1363 |
|
1364 |
int |
1365 |
nready (...) |
1366 |
PROTOTYPE: |
1367 |
CODE: |
1368 |
RETVAL = coro_nready; |
1369 |
OUTPUT: |
1370 |
RETVAL |
1371 |
|
1372 |
MODULE = Coro::State PACKAGE = Coro::AIO |
1373 |
|
1374 |
SV * |
1375 |
_get_state () |
1376 |
CODE: |
1377 |
{ |
1378 |
struct io_state *data; |
1379 |
|
1380 |
RETVAL = newSV (sizeof (struct io_state)); |
1381 |
data = (struct io_state *)SvPVX (RETVAL); |
1382 |
SvCUR_set (RETVAL, sizeof (struct io_state)); |
1383 |
SvPOK_only (RETVAL); |
1384 |
|
1385 |
data->errorno = errno; |
1386 |
data->laststype = PL_laststype; |
1387 |
data->laststatval = PL_laststatval; |
1388 |
data->statcache = PL_statcache; |
1389 |
} |
1390 |
OUTPUT: |
1391 |
RETVAL |
1392 |
|
1393 |
void |
1394 |
_set_state (char *data_) |
1395 |
PROTOTYPE: $ |
1396 |
CODE: |
1397 |
{ |
1398 |
struct io_state *data = (void *)data_; |
1399 |
|
1400 |
errno = data->errorno; |
1401 |
PL_laststype = data->laststype; |
1402 |
PL_laststatval = data->laststatval; |
1403 |
PL_statcache = data->statcache; |
1404 |
} |
1405 |
|