1 |
#include "libcoro/coro.c" |
2 |
|
3 |
#define PERL_NO_GET_CONTEXT |
4 |
#define PERL_EXT |
5 |
|
6 |
#include "EXTERN.h" |
7 |
#include "perl.h" |
8 |
#include "XSUB.h" |
9 |
#include "perliol.h" |
10 |
|
11 |
#include "patchlevel.h" |
12 |
|
13 |
#include <stdio.h> |
14 |
#include <errno.h> |
15 |
#include <assert.h> |
16 |
|
17 |
#ifdef WIN32 |
18 |
# undef setjmp |
19 |
# undef longjmp |
20 |
# undef _exit |
21 |
# define setjmp _setjmp // deep magic, don't ask |
22 |
#else |
23 |
# include <inttypes.h> /* most portable stdint.h */ |
24 |
#endif |
25 |
|
26 |
#ifdef HAVE_MMAP |
27 |
# include <unistd.h> |
28 |
# include <sys/mman.h> |
29 |
# ifndef MAP_ANONYMOUS |
30 |
# ifdef MAP_ANON |
31 |
# define MAP_ANONYMOUS MAP_ANON |
32 |
# else |
33 |
# undef HAVE_MMAP |
34 |
# endif |
35 |
# endif |
36 |
# include <limits.h> |
37 |
# ifndef PAGESIZE |
38 |
# define PAGESIZE pagesize |
39 |
# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
40 |
static long pagesize; |
41 |
# else |
42 |
# define BOOT_PAGESIZE (void)0 |
43 |
# endif |
44 |
#else |
45 |
# define PAGESIZE 0 |
46 |
# define BOOT_PAGESIZE (void)0 |
47 |
#endif |
48 |
|
49 |
#if CORO_USE_VALGRIND |
50 |
# include <valgrind/valgrind.h> |
51 |
# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end)) |
52 |
#else |
53 |
# define REGISTER_STACK(cctx,start,end) |
54 |
#endif |
55 |
|
56 |
/* the maximum number of idle cctx that will be pooled */ |
57 |
static int cctx_max_idle = 4; |
58 |
|
59 |
#define PERL_VERSION_ATLEAST(a,b,c) \ |
60 |
(PERL_REVISION > (a) \ |
61 |
|| (PERL_REVISION == (a) \ |
62 |
&& (PERL_VERSION > (b) \ |
63 |
|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
64 |
|
65 |
#if !PERL_VERSION_ATLEAST (5,6,0) |
66 |
# ifndef PL_ppaddr |
67 |
# define PL_ppaddr ppaddr |
68 |
# endif |
69 |
# ifndef call_sv |
70 |
# define call_sv perl_call_sv |
71 |
# endif |
72 |
# ifndef get_sv |
73 |
# define get_sv perl_get_sv |
74 |
# endif |
75 |
# ifndef get_cv |
76 |
# define get_cv perl_get_cv |
77 |
# endif |
78 |
# ifndef IS_PADGV |
79 |
# define IS_PADGV(v) 0 |
80 |
# endif |
81 |
# ifndef IS_PADCONST |
82 |
# define IS_PADCONST(v) 0 |
83 |
# endif |
84 |
#endif |
85 |
|
86 |
/* 5.11 */ |
87 |
#ifndef CxHASARGS |
88 |
# define CxHASARGS(cx) (cx)->blk_sub.hasargs |
89 |
#endif |
90 |
|
91 |
/* 5.10.0 */ |
92 |
#ifndef SvREFCNT_inc_NN |
93 |
# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) |
94 |
#endif |
95 |
|
96 |
/* 5.8.8 */ |
97 |
#ifndef GV_NOTQUAL |
98 |
# define GV_NOTQUAL 0 |
99 |
#endif |
100 |
#ifndef newSV |
101 |
# define newSV(l) NEWSV(0,l) |
102 |
#endif |
103 |
|
104 |
/* 5.8.7 */ |
105 |
#ifndef SvRV_set |
106 |
# define SvRV_set(s,v) SvRV(s) = (v) |
107 |
#endif |
108 |
|
109 |
#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
110 |
# undef CORO_STACKGUARD |
111 |
#endif |
112 |
|
113 |
#ifndef CORO_STACKGUARD |
114 |
# define CORO_STACKGUARD 0 |
115 |
#endif |
116 |
|
117 |
/* prefer perl internal functions over our own? */ |
118 |
#ifndef CORO_PREFER_PERL_FUNCTIONS |
119 |
# define CORO_PREFER_PERL_FUNCTIONS 0 |
120 |
#endif |
121 |
|
122 |
/* The next macros try to return the current stack pointer, in an as |
123 |
* portable way as possible. */ |
124 |
#define dSTACKLEVEL volatile char stacklevel |
125 |
#define STACKLEVEL ((void *)&stacklevel) |
126 |
|
127 |
#define IN_DESTRUCT (PL_main_cv == Nullcv) |
128 |
|
129 |
#if __GNUC__ >= 3 |
130 |
# define attribute(x) __attribute__(x) |
131 |
# define BARRIER __asm__ __volatile__ ("" : : : "memory") |
132 |
# define expect(expr,value) __builtin_expect ((expr),(value)) |
133 |
#else |
134 |
# define attribute(x) |
135 |
# define BARRIER |
136 |
# define expect(expr,value) (expr) |
137 |
#endif |
138 |
|
139 |
#define expect_false(expr) expect ((expr) != 0, 0) |
140 |
#define expect_true(expr) expect ((expr) != 0, 1) |
141 |
|
142 |
#define NOINLINE attribute ((noinline)) |
143 |
|
144 |
#include "CoroAPI.h" |
145 |
|
146 |
#ifdef USE_ITHREADS |
147 |
|
148 |
static perl_mutex coro_lock; |
149 |
# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0) |
150 |
# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0) |
151 |
# if CORO_PTHREAD |
152 |
static void *coro_thx; |
153 |
# endif |
154 |
|
155 |
#else |
156 |
|
157 |
# define LOCK (void)0 |
158 |
# define UNLOCK (void)0 |
159 |
|
160 |
#endif |
161 |
|
162 |
# undef LOCK |
163 |
# define LOCK (void)0 |
164 |
# undef UNLOCK |
165 |
# define UNLOCK (void)0 |
166 |
|
167 |
/* helper storage struct for Coro::AIO */ |
168 |
struct io_state |
169 |
{ |
170 |
AV *res; |
171 |
int errorno; |
172 |
I32 laststype; /* U16 in 5.10.0 */ |
173 |
int laststatval; |
174 |
Stat_t statcache; |
175 |
}; |
176 |
|
177 |
static double (*nvtime)(); /* so why doesn't it take void? */ |
178 |
|
179 |
static U32 cctx_gen; |
180 |
static size_t cctx_stacksize = CORO_STACKSIZE; |
181 |
static struct CoroAPI coroapi; |
182 |
static AV *main_mainstack; /* used to differentiate between $main and others */ |
183 |
static JMPENV *main_top_env; |
184 |
static HV *coro_state_stash, *coro_stash; |
185 |
static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
186 |
|
187 |
static GV *irsgv; /* $/ */ |
188 |
static GV *stdoutgv; /* *STDOUT */ |
189 |
static SV *rv_diehook; |
190 |
static SV *rv_warnhook; |
191 |
static HV *hv_sig; /* %SIG */ |
192 |
|
193 |
/* async_pool helper stuff */ |
194 |
static SV *sv_pool_rss; |
195 |
static SV *sv_pool_size; |
196 |
static AV *av_async_pool; |
197 |
|
198 |
/* Coro::AnyEvent */ |
199 |
static SV *sv_activity; |
200 |
|
201 |
static struct coro_cctx *cctx_first; |
202 |
static int cctx_count, cctx_idle; |
203 |
|
204 |
enum { |
205 |
CC_MAPPED = 0x01, |
206 |
CC_NOREUSE = 0x02, /* throw this away after tracing */ |
207 |
CC_TRACE = 0x04, |
208 |
CC_TRACE_SUB = 0x08, /* trace sub calls */ |
209 |
CC_TRACE_LINE = 0x10, /* trace each statement */ |
210 |
CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
211 |
}; |
212 |
|
213 |
/* this is a structure representing a c-level coroutine */ |
214 |
typedef struct coro_cctx { |
215 |
struct coro_cctx *next; |
216 |
|
217 |
/* the stack */ |
218 |
void *sptr; |
219 |
size_t ssize; |
220 |
|
221 |
/* cpu state */ |
222 |
void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
223 |
JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
224 |
JMPENV *top_env; |
225 |
coro_context cctx; |
226 |
|
227 |
U32 gen; |
228 |
#if CORO_USE_VALGRIND |
229 |
int valgrind_id; |
230 |
#endif |
231 |
unsigned char flags; |
232 |
} coro_cctx; |
233 |
|
234 |
enum { |
235 |
CF_RUNNING = 0x0001, /* coroutine is running */ |
236 |
CF_READY = 0x0002, /* coroutine is ready */ |
237 |
CF_NEW = 0x0004, /* has never been switched to */ |
238 |
CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
239 |
}; |
240 |
|
241 |
/* the structure where most of the perl state is stored, overlaid on the cxstack */ |
242 |
typedef struct { |
243 |
SV *defsv; |
244 |
AV *defav; |
245 |
SV *errsv; |
246 |
SV *irsgv; |
247 |
#define VAR(name,type) type name; |
248 |
# include "state.h" |
249 |
#undef VAR |
250 |
} perl_slots; |
251 |
|
252 |
#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
253 |
|
254 |
/* this is a structure representing a perl-level coroutine */ |
255 |
struct coro { |
256 |
/* the c coroutine allocated to this perl coroutine, if any */ |
257 |
coro_cctx *cctx; |
258 |
|
259 |
/* process data */ |
260 |
AV *mainstack; |
261 |
perl_slots *slot; /* basically the saved sp */ |
262 |
|
263 |
AV *args; /* data associated with this coroutine (initial args) */ |
264 |
int refcnt; /* coroutines are refcounted, yes */ |
265 |
int flags; /* CF_ flags */ |
266 |
HV *hv; /* the perl hash associated with this coro, if any */ |
267 |
|
268 |
/* statistics */ |
269 |
int usecount; /* number of transfers to this coro */ |
270 |
|
271 |
/* coro process data */ |
272 |
int prio; |
273 |
SV *throw; /* exception to be thrown */ |
274 |
|
275 |
/* async_pool */ |
276 |
SV *saved_deffh; |
277 |
|
278 |
/* linked list */ |
279 |
struct coro *next, *prev; |
280 |
}; |
281 |
|
282 |
typedef struct coro *Coro__State; |
283 |
typedef struct coro *Coro__State_or_hashref; |
284 |
|
285 |
/** Coro ********************************************************************/ |
286 |
|
287 |
#define PRIO_MAX 3 |
288 |
#define PRIO_HIGH 1 |
289 |
#define PRIO_NORMAL 0 |
290 |
#define PRIO_LOW -1 |
291 |
#define PRIO_IDLE -3 |
292 |
#define PRIO_MIN -4 |
293 |
|
294 |
/* for Coro.pm */ |
295 |
static SV *coro_current; |
296 |
static SV *coro_readyhook; |
297 |
static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; |
298 |
static int coro_nready; |
299 |
static struct coro *coro_first; |
300 |
|
301 |
/** lowlevel stuff **********************************************************/ |
302 |
|
303 |
static SV * |
304 |
coro_get_sv (pTHX_ const char *name, int create) |
305 |
{ |
306 |
#if PERL_VERSION_ATLEAST (5,10,0) |
307 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
308 |
get_sv (name, create); |
309 |
#endif |
310 |
return get_sv (name, create); |
311 |
} |
312 |
|
313 |
static AV * |
314 |
coro_get_av (pTHX_ const char *name, int create) |
315 |
{ |
316 |
#if PERL_VERSION_ATLEAST (5,10,0) |
317 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
318 |
get_av (name, create); |
319 |
#endif |
320 |
return get_av (name, create); |
321 |
} |
322 |
|
323 |
static HV * |
324 |
coro_get_hv (pTHX_ const char *name, int create) |
325 |
{ |
326 |
#if PERL_VERSION_ATLEAST (5,10,0) |
327 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
328 |
get_hv (name, create); |
329 |
#endif |
330 |
return get_hv (name, create); |
331 |
} |
332 |
|
333 |
static AV * |
334 |
coro_clone_padlist (pTHX_ CV *cv) |
335 |
{ |
336 |
AV *padlist = CvPADLIST (cv); |
337 |
AV *newpadlist, *newpad; |
338 |
|
339 |
newpadlist = newAV (); |
340 |
AvREAL_off (newpadlist); |
341 |
#if PERL_VERSION_ATLEAST (5,10,0) |
342 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
343 |
#else |
344 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
345 |
#endif |
346 |
newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
347 |
--AvFILLp (padlist); |
348 |
|
349 |
av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); |
350 |
av_store (newpadlist, 1, (SV *)newpad); |
351 |
|
352 |
return newpadlist; |
353 |
} |
354 |
|
355 |
static void |
356 |
free_padlist (pTHX_ AV *padlist) |
357 |
{ |
358 |
/* may be during global destruction */ |
359 |
if (SvREFCNT (padlist)) |
360 |
{ |
361 |
I32 i = AvFILLp (padlist); |
362 |
while (i >= 0) |
363 |
{ |
364 |
SV **svp = av_fetch (padlist, i--, FALSE); |
365 |
if (svp) |
366 |
{ |
367 |
SV *sv; |
368 |
while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
369 |
SvREFCNT_dec (sv); |
370 |
|
371 |
SvREFCNT_dec (*svp); |
372 |
} |
373 |
} |
374 |
|
375 |
SvREFCNT_dec ((SV*)padlist); |
376 |
} |
377 |
} |
378 |
|
379 |
static int |
380 |
coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
381 |
{ |
382 |
AV *padlist; |
383 |
AV *av = (AV *)mg->mg_obj; |
384 |
|
385 |
/* casting is fun. */ |
386 |
while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
387 |
free_padlist (aTHX_ padlist); |
388 |
|
389 |
SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
390 |
|
391 |
return 0; |
392 |
} |
393 |
|
394 |
#define CORO_MAGIC_type_cv PERL_MAGIC_ext |
395 |
#define CORO_MAGIC_type_state PERL_MAGIC_ext |
396 |
|
397 |
static MGVTBL coro_cv_vtbl = { |
398 |
0, 0, 0, 0, |
399 |
coro_cv_free |
400 |
}; |
401 |
|
402 |
#define CORO_MAGIC(sv, type) \ |
403 |
SvMAGIC (sv) \ |
404 |
? SvMAGIC (sv)->mg_type == type \ |
405 |
? SvMAGIC (sv) \ |
406 |
: mg_find (sv, type) \ |
407 |
: 0 |
408 |
|
409 |
#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
410 |
#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) |
411 |
|
412 |
static struct coro * |
413 |
SvSTATE_ (pTHX_ SV *coro) |
414 |
{ |
415 |
HV *stash; |
416 |
MAGIC *mg; |
417 |
|
418 |
if (SvROK (coro)) |
419 |
coro = SvRV (coro); |
420 |
|
421 |
if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
422 |
croak ("Coro::State object required"); |
423 |
|
424 |
stash = SvSTASH (coro); |
425 |
if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
426 |
{ |
427 |
/* very slow, but rare, check */ |
428 |
if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
429 |
croak ("Coro::State object required"); |
430 |
} |
431 |
|
432 |
mg = CORO_MAGIC_state (coro); |
433 |
return (struct coro *)mg->mg_ptr; |
434 |
} |
435 |
|
436 |
#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
437 |
|
438 |
/* the next two functions merely cache the padlists */ |
439 |
static void |
440 |
get_padlist (pTHX_ CV *cv) |
441 |
{ |
442 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
443 |
AV *av; |
444 |
|
445 |
if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
446 |
CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
447 |
else |
448 |
{ |
449 |
#if CORO_PREFER_PERL_FUNCTIONS |
450 |
/* this is probably cleaner? but also slower! */ |
451 |
/* in practise, it seems to be less stable */ |
452 |
CV *cp = Perl_cv_clone (cv); |
453 |
CvPADLIST (cv) = CvPADLIST (cp); |
454 |
CvPADLIST (cp) = 0; |
455 |
SvREFCNT_dec (cp); |
456 |
#else |
457 |
CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
458 |
#endif |
459 |
} |
460 |
} |
461 |
|
462 |
static void |
463 |
put_padlist (pTHX_ CV *cv) |
464 |
{ |
465 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
466 |
AV *av; |
467 |
|
468 |
if (expect_false (!mg)) |
469 |
mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
470 |
|
471 |
av = (AV *)mg->mg_obj; |
472 |
|
473 |
if (expect_false (AvFILLp (av) >= AvMAX (av))) |
474 |
av_extend (av, AvMAX (av) + 1); |
475 |
|
476 |
AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
477 |
} |
478 |
|
479 |
/** load & save, init *******************************************************/ |
480 |
|
481 |
static void |
482 |
load_perl (pTHX_ Coro__State c) |
483 |
{ |
484 |
perl_slots *slot = c->slot; |
485 |
c->slot = 0; |
486 |
|
487 |
PL_mainstack = c->mainstack; |
488 |
|
489 |
GvSV (PL_defgv) = slot->defsv; |
490 |
GvAV (PL_defgv) = slot->defav; |
491 |
GvSV (PL_errgv) = slot->errsv; |
492 |
GvSV (irsgv) = slot->irsgv; |
493 |
|
494 |
#define VAR(name,type) PL_ ## name = slot->name; |
495 |
# include "state.h" |
496 |
#undef VAR |
497 |
|
498 |
{ |
499 |
dSP; |
500 |
|
501 |
CV *cv; |
502 |
|
503 |
/* now do the ugly restore mess */ |
504 |
while (expect_true (cv = (CV *)POPs)) |
505 |
{ |
506 |
put_padlist (aTHX_ cv); /* mark this padlist as available */ |
507 |
CvDEPTH (cv) = PTR2IV (POPs); |
508 |
CvPADLIST (cv) = (AV *)POPs; |
509 |
} |
510 |
|
511 |
PUTBACK; |
512 |
} |
513 |
} |
514 |
|
515 |
static void |
516 |
save_perl (pTHX_ Coro__State c) |
517 |
{ |
518 |
{ |
519 |
dSP; |
520 |
I32 cxix = cxstack_ix; |
521 |
PERL_CONTEXT *ccstk = cxstack; |
522 |
PERL_SI *top_si = PL_curstackinfo; |
523 |
|
524 |
/* |
525 |
* the worst thing you can imagine happens first - we have to save |
526 |
* (and reinitialize) all cv's in the whole callchain :( |
527 |
*/ |
528 |
|
529 |
XPUSHs (Nullsv); |
530 |
/* this loop was inspired by pp_caller */ |
531 |
for (;;) |
532 |
{ |
533 |
while (expect_true (cxix >= 0)) |
534 |
{ |
535 |
PERL_CONTEXT *cx = &ccstk[cxix--]; |
536 |
|
537 |
if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) |
538 |
{ |
539 |
CV *cv = cx->blk_sub.cv; |
540 |
|
541 |
if (expect_true (CvDEPTH (cv))) |
542 |
{ |
543 |
EXTEND (SP, 3); |
544 |
PUSHs ((SV *)CvPADLIST (cv)); |
545 |
PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
546 |
PUSHs ((SV *)cv); |
547 |
|
548 |
CvDEPTH (cv) = 0; |
549 |
get_padlist (aTHX_ cv); |
550 |
} |
551 |
} |
552 |
} |
553 |
|
554 |
if (expect_true (top_si->si_type == PERLSI_MAIN)) |
555 |
break; |
556 |
|
557 |
top_si = top_si->si_prev; |
558 |
ccstk = top_si->si_cxstack; |
559 |
cxix = top_si->si_cxix; |
560 |
} |
561 |
|
562 |
PUTBACK; |
563 |
} |
564 |
|
565 |
/* allocate some space on the context stack for our purposes */ |
566 |
/* we manually unroll here, as usually 2 slots is enough */ |
567 |
if (SLOT_COUNT >= 1) CXINC; |
568 |
if (SLOT_COUNT >= 2) CXINC; |
569 |
if (SLOT_COUNT >= 3) CXINC; |
570 |
{ |
571 |
int i; |
572 |
for (i = 3; i < SLOT_COUNT; ++i) |
573 |
CXINC; |
574 |
} |
575 |
cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
576 |
|
577 |
c->mainstack = PL_mainstack; |
578 |
|
579 |
{ |
580 |
perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
581 |
|
582 |
slot->defav = GvAV (PL_defgv); |
583 |
slot->defsv = DEFSV; |
584 |
slot->errsv = ERRSV; |
585 |
slot->irsgv = GvSV (irsgv); |
586 |
|
587 |
#define VAR(name,type) slot->name = PL_ ## name; |
588 |
# include "state.h" |
589 |
#undef VAR |
590 |
} |
591 |
} |
592 |
|
593 |
/* |
594 |
* allocate various perl stacks. This is an exact copy |
595 |
* of perl.c:init_stacks, except that it uses less memory |
596 |
* on the (sometimes correct) assumption that coroutines do |
597 |
* not usually need a lot of stackspace. |
598 |
*/ |
599 |
#if CORO_PREFER_PERL_FUNCTIONS |
600 |
# define coro_init_stacks init_stacks |
601 |
#else |
602 |
static void |
603 |
coro_init_stacks (pTHX) |
604 |
{ |
605 |
PL_curstackinfo = new_stackinfo(32, 8); |
606 |
PL_curstackinfo->si_type = PERLSI_MAIN; |
607 |
PL_curstack = PL_curstackinfo->si_stack; |
608 |
PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
609 |
|
610 |
PL_stack_base = AvARRAY(PL_curstack); |
611 |
PL_stack_sp = PL_stack_base; |
612 |
PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
613 |
|
614 |
New(50,PL_tmps_stack,32,SV*); |
615 |
PL_tmps_floor = -1; |
616 |
PL_tmps_ix = -1; |
617 |
PL_tmps_max = 32; |
618 |
|
619 |
New(54,PL_markstack,16,I32); |
620 |
PL_markstack_ptr = PL_markstack; |
621 |
PL_markstack_max = PL_markstack + 16; |
622 |
|
623 |
#ifdef SET_MARK_OFFSET |
624 |
SET_MARK_OFFSET; |
625 |
#endif |
626 |
|
627 |
New(54,PL_scopestack,8,I32); |
628 |
PL_scopestack_ix = 0; |
629 |
PL_scopestack_max = 8; |
630 |
|
631 |
New(54,PL_savestack,24,ANY); |
632 |
PL_savestack_ix = 0; |
633 |
PL_savestack_max = 24; |
634 |
|
635 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
636 |
New(54,PL_retstack,4,OP*); |
637 |
PL_retstack_ix = 0; |
638 |
PL_retstack_max = 4; |
639 |
#endif |
640 |
} |
641 |
#endif |
642 |
|
643 |
/* |
644 |
* destroy the stacks, the callchain etc... |
645 |
*/ |
646 |
static void |
647 |
coro_destruct_stacks (pTHX) |
648 |
{ |
649 |
while (PL_curstackinfo->si_next) |
650 |
PL_curstackinfo = PL_curstackinfo->si_next; |
651 |
|
652 |
while (PL_curstackinfo) |
653 |
{ |
654 |
PERL_SI *p = PL_curstackinfo->si_prev; |
655 |
|
656 |
if (!IN_DESTRUCT) |
657 |
SvREFCNT_dec (PL_curstackinfo->si_stack); |
658 |
|
659 |
Safefree (PL_curstackinfo->si_cxstack); |
660 |
Safefree (PL_curstackinfo); |
661 |
PL_curstackinfo = p; |
662 |
} |
663 |
|
664 |
Safefree (PL_tmps_stack); |
665 |
Safefree (PL_markstack); |
666 |
Safefree (PL_scopestack); |
667 |
Safefree (PL_savestack); |
668 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
669 |
Safefree (PL_retstack); |
670 |
#endif |
671 |
} |
672 |
|
673 |
static size_t |
674 |
coro_rss (pTHX_ struct coro *coro) |
675 |
{ |
676 |
size_t rss = sizeof (*coro); |
677 |
|
678 |
if (coro->mainstack) |
679 |
{ |
680 |
perl_slots tmp_slot; |
681 |
perl_slots *slot; |
682 |
|
683 |
if (coro->flags & CF_RUNNING) |
684 |
{ |
685 |
slot = &tmp_slot; |
686 |
|
687 |
#define VAR(name,type) slot->name = PL_ ## name; |
688 |
# include "state.h" |
689 |
#undef VAR |
690 |
} |
691 |
else |
692 |
slot = coro->slot; |
693 |
|
694 |
if (slot) |
695 |
{ |
696 |
rss += sizeof (slot->curstackinfo); |
697 |
rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); |
698 |
rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); |
699 |
rss += slot->tmps_max * sizeof (SV *); |
700 |
rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); |
701 |
rss += slot->scopestack_max * sizeof (I32); |
702 |
rss += slot->savestack_max * sizeof (ANY); |
703 |
|
704 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
705 |
rss += slot->retstack_max * sizeof (OP *); |
706 |
#endif |
707 |
} |
708 |
} |
709 |
|
710 |
return rss; |
711 |
} |
712 |
|
713 |
/** coroutine stack handling ************************************************/ |
714 |
|
715 |
static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
716 |
static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
717 |
static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
718 |
|
719 |
/* apparently < 5.8.8 */ |
720 |
#ifndef MgPV_nolen_const |
721 |
#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
722 |
SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
723 |
(const char*)(mg)->mg_ptr) |
724 |
#endif |
725 |
|
726 |
/* |
727 |
* This overrides the default magic get method of %SIG elements. |
728 |
* The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
729 |
* and instead of tryign to save and restore the hash elements, we just provide |
730 |
* readback here. |
731 |
* We only do this when the hook is != 0, as they are often set to 0 temporarily, |
732 |
* not expecting this to actually change the hook. This is a potential problem |
733 |
* when a schedule happens then, but we ignore this. |
734 |
*/ |
735 |
static int |
736 |
coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
737 |
{ |
738 |
const char *s = MgPV_nolen_const (mg); |
739 |
|
740 |
if (*s == '_') |
741 |
{ |
742 |
SV **svp = 0; |
743 |
|
744 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
745 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
746 |
|
747 |
if (svp) |
748 |
{ |
749 |
sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
750 |
return 0; |
751 |
} |
752 |
} |
753 |
|
754 |
return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
755 |
} |
756 |
|
757 |
static int |
758 |
coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
759 |
{ |
760 |
const char *s = MgPV_nolen_const (mg); |
761 |
|
762 |
if (*s == '_') |
763 |
{ |
764 |
SV **svp = 0; |
765 |
|
766 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
767 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
768 |
|
769 |
if (svp) |
770 |
{ |
771 |
SV *old = *svp; |
772 |
*svp = 0; |
773 |
SvREFCNT_dec (old); |
774 |
return 0; |
775 |
} |
776 |
} |
777 |
|
778 |
return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
779 |
} |
780 |
|
781 |
static int |
782 |
coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
783 |
{ |
784 |
const char *s = MgPV_nolen_const (mg); |
785 |
|
786 |
if (*s == '_') |
787 |
{ |
788 |
SV **svp = 0; |
789 |
|
790 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
791 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
792 |
|
793 |
if (svp) |
794 |
{ |
795 |
SV *old = *svp; |
796 |
*svp = newSVsv (sv); |
797 |
SvREFCNT_dec (old); |
798 |
return 0; |
799 |
} |
800 |
} |
801 |
|
802 |
return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
803 |
} |
804 |
|
805 |
static void |
806 |
coro_setup (pTHX_ struct coro *coro) |
807 |
{ |
808 |
/* |
809 |
* emulate part of the perl startup here. |
810 |
*/ |
811 |
coro_init_stacks (aTHX); |
812 |
|
813 |
PL_runops = RUNOPS_DEFAULT; |
814 |
PL_curcop = &PL_compiling; |
815 |
PL_in_eval = EVAL_NULL; |
816 |
PL_comppad = 0; |
817 |
PL_curpm = 0; |
818 |
PL_curpad = 0; |
819 |
PL_localizing = 0; |
820 |
PL_dirty = 0; |
821 |
PL_restartop = 0; |
822 |
#if PERL_VERSION_ATLEAST (5,10,0) |
823 |
PL_parser = 0; |
824 |
#endif |
825 |
|
826 |
/* recreate the die/warn hooks */ |
827 |
PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
828 |
PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
829 |
|
830 |
GvSV (PL_defgv) = newSV (0); |
831 |
GvAV (PL_defgv) = coro->args; coro->args = 0; |
832 |
GvSV (PL_errgv) = newSV (0); |
833 |
GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
834 |
PL_rs = newSVsv (GvSV (irsgv)); |
835 |
PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
836 |
|
837 |
{ |
838 |
dSP; |
839 |
LOGOP myop; |
840 |
|
841 |
Zero (&myop, 1, LOGOP); |
842 |
myop.op_next = Nullop; |
843 |
myop.op_flags = OPf_WANT_VOID; |
844 |
|
845 |
PUSHMARK (SP); |
846 |
XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
847 |
PUTBACK; |
848 |
PL_op = (OP *)&myop; |
849 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
850 |
SPAGAIN; |
851 |
} |
852 |
|
853 |
/* this newly created coroutine might be run on an existing cctx which most |
854 |
* likely was suspended in set_stacklevel, called from entersub. |
855 |
* set_stacklevl doesn't do anything on return, but entersub does LEAVE, |
856 |
* so we ENTER here for symmetry |
857 |
*/ |
858 |
ENTER; |
859 |
} |
860 |
|
861 |
static void |
862 |
coro_destruct (pTHX_ struct coro *coro) |
863 |
{ |
864 |
if (!IN_DESTRUCT) |
865 |
{ |
866 |
/* restore all saved variables and stuff */ |
867 |
LEAVE_SCOPE (0); |
868 |
assert (PL_tmps_floor == -1); |
869 |
|
870 |
/* free all temporaries */ |
871 |
FREETMPS; |
872 |
assert (PL_tmps_ix == -1); |
873 |
|
874 |
/* unwind all extra stacks */ |
875 |
POPSTACK_TO (PL_mainstack); |
876 |
|
877 |
/* unwind main stack */ |
878 |
dounwind (-1); |
879 |
} |
880 |
|
881 |
SvREFCNT_dec (GvSV (PL_defgv)); |
882 |
SvREFCNT_dec (GvAV (PL_defgv)); |
883 |
SvREFCNT_dec (GvSV (PL_errgv)); |
884 |
SvREFCNT_dec (PL_defoutgv); |
885 |
SvREFCNT_dec (PL_rs); |
886 |
SvREFCNT_dec (GvSV (irsgv)); |
887 |
|
888 |
SvREFCNT_dec (PL_diehook); |
889 |
SvREFCNT_dec (PL_warnhook); |
890 |
|
891 |
SvREFCNT_dec (coro->saved_deffh); |
892 |
SvREFCNT_dec (coro->throw); |
893 |
|
894 |
coro_destruct_stacks (aTHX); |
895 |
} |
896 |
|
897 |
static void |
898 |
free_coro_mortal (pTHX) |
899 |
{ |
900 |
if (expect_true (coro_mortal)) |
901 |
{ |
902 |
SvREFCNT_dec (coro_mortal); |
903 |
coro_mortal = 0; |
904 |
} |
905 |
} |
906 |
|
907 |
static int |
908 |
runops_trace (pTHX) |
909 |
{ |
910 |
COP *oldcop = 0; |
911 |
int oldcxix = -2; |
912 |
struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ |
913 |
coro_cctx *cctx = coro->cctx; |
914 |
|
915 |
while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
916 |
{ |
917 |
PERL_ASYNC_CHECK (); |
918 |
|
919 |
if (cctx->flags & CC_TRACE_ALL) |
920 |
{ |
921 |
if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) |
922 |
{ |
923 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
924 |
SV **bot, **top; |
925 |
AV *av = newAV (); /* return values */ |
926 |
SV **cb; |
927 |
dSP; |
928 |
|
929 |
GV *gv = CvGV (cx->blk_sub.cv); |
930 |
SV *fullname = sv_2mortal (newSV (0)); |
931 |
if (isGV (gv)) |
932 |
gv_efullname3 (fullname, gv, 0); |
933 |
|
934 |
bot = PL_stack_base + cx->blk_oldsp + 1; |
935 |
top = cx->blk_gimme == G_ARRAY ? SP + 1 |
936 |
: cx->blk_gimme == G_SCALAR ? bot + 1 |
937 |
: bot; |
938 |
|
939 |
av_extend (av, top - bot); |
940 |
while (bot < top) |
941 |
av_push (av, SvREFCNT_inc_NN (*bot++)); |
942 |
|
943 |
PL_runops = RUNOPS_DEFAULT; |
944 |
ENTER; |
945 |
SAVETMPS; |
946 |
EXTEND (SP, 3); |
947 |
PUSHMARK (SP); |
948 |
PUSHs (&PL_sv_no); |
949 |
PUSHs (fullname); |
950 |
PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
951 |
PUTBACK; |
952 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
953 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
954 |
SPAGAIN; |
955 |
FREETMPS; |
956 |
LEAVE; |
957 |
PL_runops = runops_trace; |
958 |
} |
959 |
|
960 |
if (oldcop != PL_curcop) |
961 |
{ |
962 |
oldcop = PL_curcop; |
963 |
|
964 |
if (PL_curcop != &PL_compiling) |
965 |
{ |
966 |
SV **cb; |
967 |
|
968 |
if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) |
969 |
{ |
970 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
971 |
|
972 |
if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
973 |
{ |
974 |
runops_proc_t old_runops = PL_runops; |
975 |
dSP; |
976 |
GV *gv = CvGV (cx->blk_sub.cv); |
977 |
SV *fullname = sv_2mortal (newSV (0)); |
978 |
|
979 |
if (isGV (gv)) |
980 |
gv_efullname3 (fullname, gv, 0); |
981 |
|
982 |
PL_runops = RUNOPS_DEFAULT; |
983 |
ENTER; |
984 |
SAVETMPS; |
985 |
EXTEND (SP, 3); |
986 |
PUSHMARK (SP); |
987 |
PUSHs (&PL_sv_yes); |
988 |
PUSHs (fullname); |
989 |
PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
990 |
PUTBACK; |
991 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
992 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
993 |
SPAGAIN; |
994 |
FREETMPS; |
995 |
LEAVE; |
996 |
PL_runops = runops_trace; |
997 |
} |
998 |
|
999 |
oldcxix = cxstack_ix; |
1000 |
} |
1001 |
|
1002 |
if (cctx->flags & CC_TRACE_LINE) |
1003 |
{ |
1004 |
dSP; |
1005 |
|
1006 |
PL_runops = RUNOPS_DEFAULT; |
1007 |
ENTER; |
1008 |
SAVETMPS; |
1009 |
EXTEND (SP, 3); |
1010 |
PL_runops = RUNOPS_DEFAULT; |
1011 |
PUSHMARK (SP); |
1012 |
PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
1013 |
PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
1014 |
PUTBACK; |
1015 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
1016 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1017 |
SPAGAIN; |
1018 |
FREETMPS; |
1019 |
LEAVE; |
1020 |
PL_runops = runops_trace; |
1021 |
} |
1022 |
} |
1023 |
} |
1024 |
} |
1025 |
} |
1026 |
|
1027 |
TAINT_NOT; |
1028 |
return 0; |
1029 |
} |
1030 |
|
1031 |
/* inject a fake call to Coro::State::_cctx_init into the execution */ |
1032 |
/* _cctx_init should be careful, as it could be called at almost any time */ |
1033 |
/* during execution of a perl program */ |
1034 |
static void NOINLINE |
1035 |
cctx_prepare (pTHX_ coro_cctx *cctx) |
1036 |
{ |
1037 |
dSP; |
1038 |
LOGOP myop; |
1039 |
|
1040 |
PL_top_env = &PL_start_env; |
1041 |
|
1042 |
if (cctx->flags & CC_TRACE) |
1043 |
PL_runops = runops_trace; |
1044 |
|
1045 |
Zero (&myop, 1, LOGOP); |
1046 |
myop.op_next = PL_op; |
1047 |
myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
1048 |
|
1049 |
PUSHMARK (SP); |
1050 |
EXTEND (SP, 2); |
1051 |
PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
1052 |
PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
1053 |
PUTBACK; |
1054 |
PL_op = (OP *)&myop; |
1055 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
1056 |
SPAGAIN; |
1057 |
} |
1058 |
|
1059 |
/* |
1060 |
* this is a _very_ stripped down perl interpreter ;) |
1061 |
*/ |
1062 |
static void |
1063 |
cctx_run (void *arg) |
1064 |
{ |
1065 |
#ifdef USE_ITHREADS |
1066 |
# if CORO_PTHREAD |
1067 |
PERL_SET_CONTEXT (coro_thx); |
1068 |
# endif |
1069 |
#endif |
1070 |
{ |
1071 |
dTHX; |
1072 |
|
1073 |
/* cctx_run is the alternative tail of transfer(), so unlock here. */ |
1074 |
UNLOCK; |
1075 |
|
1076 |
/* we now skip the entersub that lead to transfer() */ |
1077 |
PL_op = PL_op->op_next; |
1078 |
|
1079 |
/* inject a fake subroutine call to cctx_init */ |
1080 |
cctx_prepare (aTHX_ (coro_cctx *)arg); |
1081 |
|
1082 |
/* somebody or something will hit me for both perl_run and PL_restartop */ |
1083 |
PL_restartop = PL_op; |
1084 |
perl_run (PL_curinterp); |
1085 |
|
1086 |
/* |
1087 |
* If perl-run returns we assume exit() was being called or the coro |
1088 |
* fell off the end, which seems to be the only valid (non-bug) |
1089 |
* reason for perl_run to return. We try to exit by jumping to the |
1090 |
* bootstrap-time "top" top_env, as we cannot restore the "main" |
1091 |
* coroutine as Coro has no such concept |
1092 |
*/ |
1093 |
PL_top_env = main_top_env; |
1094 |
JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
1095 |
} |
1096 |
} |
1097 |
|
1098 |
static coro_cctx * |
1099 |
cctx_new () |
1100 |
{ |
1101 |
coro_cctx *cctx; |
1102 |
void *stack_start; |
1103 |
size_t stack_size; |
1104 |
|
1105 |
++cctx_count; |
1106 |
Newz (0, cctx, 1, coro_cctx); |
1107 |
|
1108 |
cctx->gen = cctx_gen; |
1109 |
|
1110 |
#if HAVE_MMAP |
1111 |
cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
1112 |
/* mmap supposedly does allocate-on-write for us */ |
1113 |
cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
1114 |
|
1115 |
if (cctx->sptr != (void *)-1) |
1116 |
{ |
1117 |
# if CORO_STACKGUARD |
1118 |
mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
1119 |
# endif |
1120 |
stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; |
1121 |
stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
1122 |
cctx->flags |= CC_MAPPED; |
1123 |
} |
1124 |
else |
1125 |
#endif |
1126 |
{ |
1127 |
cctx->ssize = cctx_stacksize * (long)sizeof (long); |
1128 |
New (0, cctx->sptr, cctx_stacksize, long); |
1129 |
|
1130 |
if (!cctx->sptr) |
1131 |
{ |
1132 |
perror ("FATAL: unable to allocate stack for coroutine"); |
1133 |
_exit (EXIT_FAILURE); |
1134 |
} |
1135 |
|
1136 |
stack_start = cctx->sptr; |
1137 |
stack_size = cctx->ssize; |
1138 |
} |
1139 |
|
1140 |
REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); |
1141 |
coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
1142 |
|
1143 |
return cctx; |
1144 |
} |
1145 |
|
1146 |
static void |
1147 |
cctx_destroy (coro_cctx *cctx) |
1148 |
{ |
1149 |
if (!cctx) |
1150 |
return; |
1151 |
|
1152 |
--cctx_count; |
1153 |
coro_destroy (&cctx->cctx); |
1154 |
|
1155 |
/* coro_transfer creates new, empty cctx's */ |
1156 |
if (cctx->sptr) |
1157 |
{ |
1158 |
#if CORO_USE_VALGRIND |
1159 |
VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
1160 |
#endif |
1161 |
|
1162 |
#if HAVE_MMAP |
1163 |
if (cctx->flags & CC_MAPPED) |
1164 |
munmap (cctx->sptr, cctx->ssize); |
1165 |
else |
1166 |
#endif |
1167 |
Safefree (cctx->sptr); |
1168 |
} |
1169 |
|
1170 |
Safefree (cctx); |
1171 |
} |
1172 |
|
1173 |
/* wether this cctx should be destructed */ |
1174 |
#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
1175 |
|
1176 |
static coro_cctx * |
1177 |
cctx_get (pTHX) |
1178 |
{ |
1179 |
while (expect_true (cctx_first)) |
1180 |
{ |
1181 |
coro_cctx *cctx = cctx_first; |
1182 |
cctx_first = cctx->next; |
1183 |
--cctx_idle; |
1184 |
|
1185 |
if (expect_true (!CCTX_EXPIRED (cctx))) |
1186 |
return cctx; |
1187 |
|
1188 |
cctx_destroy (cctx); |
1189 |
} |
1190 |
|
1191 |
return cctx_new (); |
1192 |
} |
1193 |
|
1194 |
static void |
1195 |
cctx_put (coro_cctx *cctx) |
1196 |
{ |
1197 |
assert (("cctx_put called on non-initialised cctx", cctx->sptr)); |
1198 |
|
1199 |
/* free another cctx if overlimit */ |
1200 |
if (expect_false (cctx_idle >= cctx_max_idle)) |
1201 |
{ |
1202 |
coro_cctx *first = cctx_first; |
1203 |
cctx_first = first->next; |
1204 |
--cctx_idle; |
1205 |
|
1206 |
cctx_destroy (first); |
1207 |
} |
1208 |
|
1209 |
++cctx_idle; |
1210 |
cctx->next = cctx_first; |
1211 |
cctx_first = cctx; |
1212 |
} |
1213 |
|
1214 |
/** coroutine switching *****************************************************/ |
1215 |
|
1216 |
static void |
1217 |
transfer_check (pTHX_ struct coro *prev, struct coro *next) |
1218 |
{ |
1219 |
if (expect_true (prev != next)) |
1220 |
{ |
1221 |
if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
1222 |
croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); |
1223 |
|
1224 |
if (expect_false (next->flags & CF_RUNNING)) |
1225 |
croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
1226 |
|
1227 |
if (expect_false (next->flags & CF_DESTROYED)) |
1228 |
croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
1229 |
|
1230 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
1231 |
if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
1232 |
croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); |
1233 |
#endif |
1234 |
} |
1235 |
} |
1236 |
|
1237 |
/* always use the TRANSFER macro */ |
1238 |
static void NOINLINE |
1239 |
transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
1240 |
{ |
1241 |
dSTACKLEVEL; |
1242 |
|
1243 |
/* sometimes transfer is only called to set idle_sp */ |
1244 |
if (expect_false (!next)) |
1245 |
{ |
1246 |
((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
1247 |
assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1248 |
} |
1249 |
else if (expect_true (prev != next)) |
1250 |
{ |
1251 |
static volatile int has_throw; |
1252 |
coro_cctx *prev__cctx; |
1253 |
|
1254 |
if (expect_false (prev->flags & CF_NEW)) |
1255 |
{ |
1256 |
/* create a new empty/source context */ |
1257 |
++cctx_count; |
1258 |
New (0, prev->cctx, 1, coro_cctx); |
1259 |
prev->cctx->sptr = 0; |
1260 |
coro_create (&prev->cctx->cctx, 0, 0, 0, 0); |
1261 |
|
1262 |
prev->flags &= ~CF_NEW; |
1263 |
prev->flags |= CF_RUNNING; |
1264 |
} |
1265 |
|
1266 |
prev->flags &= ~CF_RUNNING; |
1267 |
next->flags |= CF_RUNNING; |
1268 |
|
1269 |
LOCK; |
1270 |
|
1271 |
/* first get rid of the old state */ |
1272 |
save_perl (aTHX_ prev); |
1273 |
|
1274 |
if (expect_false (next->flags & CF_NEW)) |
1275 |
{ |
1276 |
/* need to start coroutine */ |
1277 |
next->flags &= ~CF_NEW; |
1278 |
/* setup coroutine call */ |
1279 |
coro_setup (aTHX_ next); |
1280 |
} |
1281 |
else |
1282 |
load_perl (aTHX_ next); |
1283 |
|
1284 |
prev__cctx = prev->cctx; |
1285 |
|
1286 |
/* possibly "free" the cctx */ |
1287 |
if (expect_true ( |
1288 |
prev__cctx->idle_sp == STACKLEVEL |
1289 |
&& !(prev__cctx->flags & CC_TRACE) |
1290 |
&& !force_cctx |
1291 |
)) |
1292 |
{ |
1293 |
/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
1294 |
assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
1295 |
|
1296 |
prev->cctx = 0; |
1297 |
|
1298 |
/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
1299 |
/* without this the next cctx_get might destroy the prev__cctx while still in use */ |
1300 |
if (expect_false (CCTX_EXPIRED (prev__cctx))) |
1301 |
if (!next->cctx) |
1302 |
next->cctx = cctx_get (aTHX); |
1303 |
|
1304 |
cctx_put (prev__cctx); |
1305 |
} |
1306 |
|
1307 |
++next->usecount; |
1308 |
|
1309 |
if (expect_true (!next->cctx)) |
1310 |
next->cctx = cctx_get (aTHX); |
1311 |
|
1312 |
has_throw = !!next->throw; |
1313 |
|
1314 |
if (expect_false (prev__cctx != next->cctx)) |
1315 |
{ |
1316 |
prev__cctx->top_env = PL_top_env; |
1317 |
PL_top_env = next->cctx->top_env; |
1318 |
coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
1319 |
} |
1320 |
|
1321 |
free_coro_mortal (aTHX); |
1322 |
UNLOCK; |
1323 |
|
1324 |
if (expect_false (has_throw)) |
1325 |
{ |
1326 |
struct coro *coro = SvSTATE (coro_current); |
1327 |
|
1328 |
if (coro->throw) |
1329 |
{ |
1330 |
SV *exception = coro->throw; |
1331 |
coro->throw = 0; |
1332 |
sv_setsv (ERRSV, exception); |
1333 |
croak (0); |
1334 |
} |
1335 |
} |
1336 |
} |
1337 |
} |
1338 |
|
1339 |
struct transfer_args |
1340 |
{ |
1341 |
struct coro *prev, *next; |
1342 |
}; |
1343 |
|
1344 |
#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
1345 |
#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
1346 |
|
1347 |
/** high level stuff ********************************************************/ |
1348 |
|
1349 |
static int |
1350 |
coro_state_destroy (pTHX_ struct coro *coro) |
1351 |
{ |
1352 |
if (coro->flags & CF_DESTROYED) |
1353 |
return 0; |
1354 |
|
1355 |
coro->flags |= CF_DESTROYED; |
1356 |
|
1357 |
if (coro->flags & CF_READY) |
1358 |
{ |
1359 |
/* reduce nready, as destroying a ready coro effectively unreadies it */ |
1360 |
/* alternative: look through all ready queues and remove the coro */ |
1361 |
LOCK; |
1362 |
--coro_nready; |
1363 |
UNLOCK; |
1364 |
} |
1365 |
else |
1366 |
coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
1367 |
|
1368 |
if (coro->mainstack && coro->mainstack != main_mainstack) |
1369 |
{ |
1370 |
struct coro temp; |
1371 |
|
1372 |
if (coro->flags & CF_RUNNING) |
1373 |
croak ("FATAL: tried to destroy currently running coroutine"); |
1374 |
|
1375 |
save_perl (aTHX_ &temp); |
1376 |
load_perl (aTHX_ coro); |
1377 |
|
1378 |
coro_destruct (aTHX_ coro); |
1379 |
|
1380 |
load_perl (aTHX_ &temp); |
1381 |
|
1382 |
coro->slot = 0; |
1383 |
} |
1384 |
|
1385 |
cctx_destroy (coro->cctx); |
1386 |
SvREFCNT_dec (coro->args); |
1387 |
|
1388 |
if (coro->next) coro->next->prev = coro->prev; |
1389 |
if (coro->prev) coro->prev->next = coro->next; |
1390 |
if (coro == coro_first) coro_first = coro->next; |
1391 |
|
1392 |
return 1; |
1393 |
} |
1394 |
|
1395 |
static int |
1396 |
coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
1397 |
{ |
1398 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1399 |
mg->mg_ptr = 0; |
1400 |
|
1401 |
coro->hv = 0; |
1402 |
|
1403 |
if (--coro->refcnt < 0) |
1404 |
{ |
1405 |
coro_state_destroy (aTHX_ coro); |
1406 |
Safefree (coro); |
1407 |
} |
1408 |
|
1409 |
return 0; |
1410 |
} |
1411 |
|
1412 |
static int |
1413 |
coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
1414 |
{ |
1415 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1416 |
|
1417 |
++coro->refcnt; |
1418 |
|
1419 |
return 0; |
1420 |
} |
1421 |
|
1422 |
static MGVTBL coro_state_vtbl = { |
1423 |
0, 0, 0, 0, |
1424 |
coro_state_free, |
1425 |
0, |
1426 |
#ifdef MGf_DUP |
1427 |
coro_state_dup, |
1428 |
#else |
1429 |
# define MGf_DUP 0 |
1430 |
#endif |
1431 |
}; |
1432 |
|
1433 |
static void |
1434 |
prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
1435 |
{ |
1436 |
ta->prev = SvSTATE (prev_sv); |
1437 |
ta->next = SvSTATE (next_sv); |
1438 |
TRANSFER_CHECK (*ta); |
1439 |
} |
1440 |
|
1441 |
static void |
1442 |
api_transfer (SV *prev_sv, SV *next_sv) |
1443 |
{ |
1444 |
dTHX; |
1445 |
struct transfer_args ta; |
1446 |
|
1447 |
prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1448 |
TRANSFER (ta, 1); |
1449 |
} |
1450 |
|
1451 |
/** Coro ********************************************************************/ |
1452 |
|
1453 |
static void |
1454 |
coro_enq (pTHX_ SV *coro_sv) |
1455 |
{ |
1456 |
av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
1457 |
} |
1458 |
|
1459 |
static SV * |
1460 |
coro_deq (pTHX) |
1461 |
{ |
1462 |
int prio; |
1463 |
|
1464 |
for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) |
1465 |
if (AvFILLp (coro_ready [prio]) >= 0) |
1466 |
return av_shift (coro_ready [prio]); |
1467 |
|
1468 |
return 0; |
1469 |
} |
1470 |
|
1471 |
static int |
1472 |
api_ready (SV *coro_sv) |
1473 |
{ |
1474 |
dTHX; |
1475 |
struct coro *coro; |
1476 |
SV *sv_hook; |
1477 |
void (*xs_hook)(void); |
1478 |
|
1479 |
if (SvROK (coro_sv)) |
1480 |
coro_sv = SvRV (coro_sv); |
1481 |
|
1482 |
coro = SvSTATE (coro_sv); |
1483 |
|
1484 |
if (coro->flags & CF_READY) |
1485 |
return 0; |
1486 |
|
1487 |
coro->flags |= CF_READY; |
1488 |
|
1489 |
LOCK; |
1490 |
|
1491 |
sv_hook = coro_nready ? 0 : coro_readyhook; |
1492 |
xs_hook = coro_nready ? 0 : coroapi.readyhook; |
1493 |
|
1494 |
coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); |
1495 |
++coro_nready; |
1496 |
|
1497 |
UNLOCK; |
1498 |
|
1499 |
if (sv_hook) |
1500 |
{ |
1501 |
dSP; |
1502 |
|
1503 |
ENTER; |
1504 |
SAVETMPS; |
1505 |
|
1506 |
PUSHMARK (SP); |
1507 |
PUTBACK; |
1508 |
call_sv (sv_hook, G_DISCARD); |
1509 |
SPAGAIN; |
1510 |
|
1511 |
FREETMPS; |
1512 |
LEAVE; |
1513 |
} |
1514 |
|
1515 |
if (xs_hook) |
1516 |
xs_hook (); |
1517 |
|
1518 |
return 1; |
1519 |
} |
1520 |
|
1521 |
static int |
1522 |
api_is_ready (SV *coro_sv) |
1523 |
{ |
1524 |
dTHX; |
1525 |
return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1526 |
} |
1527 |
|
1528 |
static void |
1529 |
prepare_schedule (pTHX_ struct transfer_args *ta) |
1530 |
{ |
1531 |
SV *prev_sv, *next_sv; |
1532 |
|
1533 |
for (;;) |
1534 |
{ |
1535 |
LOCK; |
1536 |
next_sv = coro_deq (aTHX); |
1537 |
|
1538 |
/* nothing to schedule: call the idle handler */ |
1539 |
if (expect_false (!next_sv)) |
1540 |
{ |
1541 |
dSP; |
1542 |
UNLOCK; |
1543 |
|
1544 |
ENTER; |
1545 |
SAVETMPS; |
1546 |
|
1547 |
PUSHMARK (SP); |
1548 |
PUTBACK; |
1549 |
call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
1550 |
SPAGAIN; |
1551 |
|
1552 |
FREETMPS; |
1553 |
LEAVE; |
1554 |
continue; |
1555 |
} |
1556 |
|
1557 |
ta->next = SvSTATE (next_sv); |
1558 |
|
1559 |
/* cannot transfer to destroyed coros, skip and look for next */ |
1560 |
if (expect_false (ta->next->flags & CF_DESTROYED)) |
1561 |
{ |
1562 |
UNLOCK; |
1563 |
SvREFCNT_dec (next_sv); |
1564 |
/* coro_nready is already taken care of by destroy */ |
1565 |
continue; |
1566 |
} |
1567 |
|
1568 |
--coro_nready; |
1569 |
UNLOCK; |
1570 |
break; |
1571 |
} |
1572 |
|
1573 |
/* free this only after the transfer */ |
1574 |
prev_sv = SvRV (coro_current); |
1575 |
ta->prev = SvSTATE (prev_sv); |
1576 |
TRANSFER_CHECK (*ta); |
1577 |
assert (ta->next->flags & CF_READY); |
1578 |
ta->next->flags &= ~CF_READY; |
1579 |
SvRV_set (coro_current, next_sv); |
1580 |
|
1581 |
LOCK; |
1582 |
free_coro_mortal (aTHX); |
1583 |
coro_mortal = prev_sv; |
1584 |
UNLOCK; |
1585 |
} |
1586 |
|
1587 |
static void |
1588 |
prepare_cede (pTHX_ struct transfer_args *ta) |
1589 |
{ |
1590 |
api_ready (coro_current); |
1591 |
prepare_schedule (aTHX_ ta); |
1592 |
} |
1593 |
|
1594 |
static int |
1595 |
prepare_cede_notself (pTHX_ struct transfer_args *ta) |
1596 |
{ |
1597 |
if (coro_nready) |
1598 |
{ |
1599 |
SV *prev = SvRV (coro_current); |
1600 |
prepare_schedule (aTHX_ ta); |
1601 |
api_ready (prev); |
1602 |
return 1; |
1603 |
} |
1604 |
else |
1605 |
return 0; |
1606 |
} |
1607 |
|
1608 |
static void |
1609 |
api_schedule (void) |
1610 |
{ |
1611 |
dTHX; |
1612 |
struct transfer_args ta; |
1613 |
|
1614 |
prepare_schedule (aTHX_ &ta); |
1615 |
TRANSFER (ta, 1); |
1616 |
} |
1617 |
|
1618 |
static int |
1619 |
api_cede (void) |
1620 |
{ |
1621 |
dTHX; |
1622 |
struct transfer_args ta; |
1623 |
|
1624 |
prepare_cede (aTHX_ &ta); |
1625 |
|
1626 |
if (expect_true (ta.prev != ta.next)) |
1627 |
{ |
1628 |
TRANSFER (ta, 1); |
1629 |
return 1; |
1630 |
} |
1631 |
else |
1632 |
return 0; |
1633 |
} |
1634 |
|
1635 |
static int |
1636 |
api_cede_notself (void) |
1637 |
{ |
1638 |
dTHX; |
1639 |
struct transfer_args ta; |
1640 |
|
1641 |
if (prepare_cede_notself (aTHX_ &ta)) |
1642 |
{ |
1643 |
TRANSFER (ta, 1); |
1644 |
return 1; |
1645 |
} |
1646 |
else |
1647 |
return 0; |
1648 |
} |
1649 |
|
1650 |
static void |
1651 |
api_trace (SV *coro_sv, int flags) |
1652 |
{ |
1653 |
dTHX; |
1654 |
struct coro *coro = SvSTATE (coro_sv); |
1655 |
|
1656 |
if (flags & CC_TRACE) |
1657 |
{ |
1658 |
if (!coro->cctx) |
1659 |
coro->cctx = cctx_new (); |
1660 |
else if (!(coro->cctx->flags & CC_TRACE)) |
1661 |
croak ("cannot enable tracing on coroutine with custom stack"); |
1662 |
|
1663 |
coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
1664 |
} |
1665 |
else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
1666 |
{ |
1667 |
coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
1668 |
|
1669 |
if (coro->flags & CF_RUNNING) |
1670 |
PL_runops = RUNOPS_DEFAULT; |
1671 |
else |
1672 |
coro->slot->runops = RUNOPS_DEFAULT; |
1673 |
} |
1674 |
} |
1675 |
|
1676 |
#if 0 |
1677 |
static int |
1678 |
coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) |
1679 |
{ |
1680 |
AV *padlist; |
1681 |
AV *av = (AV *)mg->mg_obj; |
1682 |
|
1683 |
abort (); |
1684 |
|
1685 |
return 0; |
1686 |
} |
1687 |
|
1688 |
static MGVTBL coro_gensub_vtbl = { |
1689 |
0, 0, 0, 0, |
1690 |
coro_gensub_free |
1691 |
}; |
1692 |
#endif |
1693 |
|
1694 |
/*****************************************************************************/ |
1695 |
/* PerlIO::cede */ |
1696 |
|
1697 |
typedef struct |
1698 |
{ |
1699 |
PerlIOBuf base; |
1700 |
NV next, every; |
1701 |
} PerlIOCede; |
1702 |
|
1703 |
static IV |
1704 |
PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
1705 |
{ |
1706 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
1707 |
|
1708 |
self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
1709 |
self->next = nvtime () + self->every; |
1710 |
|
1711 |
return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
1712 |
} |
1713 |
|
1714 |
static SV * |
1715 |
PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
1716 |
{ |
1717 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
1718 |
|
1719 |
return newSVnv (self->every); |
1720 |
} |
1721 |
|
1722 |
static IV |
1723 |
PerlIOCede_flush (pTHX_ PerlIO *f) |
1724 |
{ |
1725 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
1726 |
double now = nvtime (); |
1727 |
|
1728 |
if (now >= self->next) |
1729 |
{ |
1730 |
api_cede (); |
1731 |
self->next = now + self->every; |
1732 |
} |
1733 |
|
1734 |
return PerlIOBuf_flush (aTHX_ f); |
1735 |
} |
1736 |
|
1737 |
static PerlIO_funcs PerlIO_cede = |
1738 |
{ |
1739 |
sizeof(PerlIO_funcs), |
1740 |
"cede", |
1741 |
sizeof(PerlIOCede), |
1742 |
PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
1743 |
PerlIOCede_pushed, |
1744 |
PerlIOBuf_popped, |
1745 |
PerlIOBuf_open, |
1746 |
PerlIOBase_binmode, |
1747 |
PerlIOCede_getarg, |
1748 |
PerlIOBase_fileno, |
1749 |
PerlIOBuf_dup, |
1750 |
PerlIOBuf_read, |
1751 |
PerlIOBuf_unread, |
1752 |
PerlIOBuf_write, |
1753 |
PerlIOBuf_seek, |
1754 |
PerlIOBuf_tell, |
1755 |
PerlIOBuf_close, |
1756 |
PerlIOCede_flush, |
1757 |
PerlIOBuf_fill, |
1758 |
PerlIOBase_eof, |
1759 |
PerlIOBase_error, |
1760 |
PerlIOBase_clearerr, |
1761 |
PerlIOBase_setlinebuf, |
1762 |
PerlIOBuf_get_base, |
1763 |
PerlIOBuf_bufsiz, |
1764 |
PerlIOBuf_get_ptr, |
1765 |
PerlIOBuf_get_cnt, |
1766 |
PerlIOBuf_set_ptrcnt, |
1767 |
}; |
1768 |
|
1769 |
|
1770 |
MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
1771 |
|
1772 |
PROTOTYPES: DISABLE |
1773 |
|
1774 |
BOOT: |
1775 |
{ |
1776 |
#ifdef USE_ITHREADS |
1777 |
MUTEX_INIT (&coro_lock); |
1778 |
# if CORO_PTHREAD |
1779 |
coro_thx = PERL_GET_CONTEXT; |
1780 |
# endif |
1781 |
#endif |
1782 |
BOOT_PAGESIZE; |
1783 |
|
1784 |
irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
1785 |
stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
1786 |
|
1787 |
orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
1788 |
orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
1789 |
orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
1790 |
|
1791 |
hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
1792 |
rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
1793 |
rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
1794 |
|
1795 |
coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1796 |
|
1797 |
newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
1798 |
newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
1799 |
newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
1800 |
newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
1801 |
|
1802 |
main_mainstack = PL_mainstack; |
1803 |
main_top_env = PL_top_env; |
1804 |
|
1805 |
while (main_top_env->je_prev) |
1806 |
main_top_env = main_top_env->je_prev; |
1807 |
|
1808 |
coroapi.ver = CORO_API_VERSION; |
1809 |
coroapi.rev = CORO_API_REVISION; |
1810 |
coroapi.transfer = api_transfer; |
1811 |
|
1812 |
{ |
1813 |
SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
1814 |
|
1815 |
if (!svp) croak ("Time::HiRes is required"); |
1816 |
if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); |
1817 |
|
1818 |
nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
1819 |
} |
1820 |
|
1821 |
assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1822 |
} |
1823 |
|
1824 |
SV * |
1825 |
new (char *klass, ...) |
1826 |
CODE: |
1827 |
{ |
1828 |
struct coro *coro; |
1829 |
MAGIC *mg; |
1830 |
HV *hv; |
1831 |
int i; |
1832 |
|
1833 |
Newz (0, coro, 1, struct coro); |
1834 |
coro->args = newAV (); |
1835 |
coro->flags = CF_NEW; |
1836 |
|
1837 |
if (coro_first) coro_first->prev = coro; |
1838 |
coro->next = coro_first; |
1839 |
coro_first = coro; |
1840 |
|
1841 |
coro->hv = hv = newHV (); |
1842 |
mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
1843 |
mg->mg_flags |= MGf_DUP; |
1844 |
RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1845 |
|
1846 |
av_extend (coro->args, items - 1); |
1847 |
for (i = 1; i < items; i++) |
1848 |
av_push (coro->args, newSVsv (ST (i))); |
1849 |
} |
1850 |
OUTPUT: |
1851 |
RETVAL |
1852 |
|
1853 |
# these not obviously related functions are all rolled into the same xs |
1854 |
# function to increase chances that they all will call transfer with the same |
1855 |
# stack offset |
1856 |
void |
1857 |
_set_stacklevel (...) |
1858 |
ALIAS: |
1859 |
Coro::State::transfer = 1 |
1860 |
Coro::schedule = 2 |
1861 |
Coro::cede = 3 |
1862 |
Coro::cede_notself = 4 |
1863 |
CODE: |
1864 |
{ |
1865 |
struct transfer_args ta; |
1866 |
|
1867 |
PUTBACK; |
1868 |
switch (ix) |
1869 |
{ |
1870 |
case 0: |
1871 |
ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1872 |
ta.next = 0; |
1873 |
break; |
1874 |
|
1875 |
case 1: |
1876 |
if (items != 2) |
1877 |
croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items); |
1878 |
|
1879 |
prepare_transfer (aTHX_ &ta, ST (0), ST (1)); |
1880 |
break; |
1881 |
|
1882 |
case 2: |
1883 |
prepare_schedule (aTHX_ &ta); |
1884 |
break; |
1885 |
|
1886 |
case 3: |
1887 |
prepare_cede (aTHX_ &ta); |
1888 |
break; |
1889 |
|
1890 |
case 4: |
1891 |
if (!prepare_cede_notself (aTHX_ &ta)) |
1892 |
XSRETURN_EMPTY; |
1893 |
|
1894 |
break; |
1895 |
} |
1896 |
SPAGAIN; |
1897 |
|
1898 |
BARRIER; |
1899 |
PUTBACK; |
1900 |
TRANSFER (ta, 0); |
1901 |
SPAGAIN; /* might be the sp of a different coroutine now */ |
1902 |
/* be extra careful not to ever do anything after TRANSFER */ |
1903 |
} |
1904 |
|
1905 |
bool |
1906 |
_destroy (SV *coro_sv) |
1907 |
CODE: |
1908 |
RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
1909 |
OUTPUT: |
1910 |
RETVAL |
1911 |
|
1912 |
void |
1913 |
_exit (int code) |
1914 |
PROTOTYPE: $ |
1915 |
CODE: |
1916 |
_exit (code); |
1917 |
|
1918 |
int |
1919 |
cctx_stacksize (int new_stacksize = 0) |
1920 |
CODE: |
1921 |
RETVAL = cctx_stacksize; |
1922 |
if (new_stacksize) |
1923 |
{ |
1924 |
cctx_stacksize = new_stacksize; |
1925 |
++cctx_gen; |
1926 |
} |
1927 |
OUTPUT: |
1928 |
RETVAL |
1929 |
|
1930 |
int |
1931 |
cctx_max_idle (int max_idle = 0) |
1932 |
CODE: |
1933 |
RETVAL = cctx_max_idle; |
1934 |
if (max_idle > 1) |
1935 |
cctx_max_idle = max_idle; |
1936 |
OUTPUT: |
1937 |
RETVAL |
1938 |
|
1939 |
int |
1940 |
cctx_count () |
1941 |
CODE: |
1942 |
RETVAL = cctx_count; |
1943 |
OUTPUT: |
1944 |
RETVAL |
1945 |
|
1946 |
int |
1947 |
cctx_idle () |
1948 |
CODE: |
1949 |
RETVAL = cctx_idle; |
1950 |
OUTPUT: |
1951 |
RETVAL |
1952 |
|
1953 |
void |
1954 |
list () |
1955 |
PPCODE: |
1956 |
{ |
1957 |
struct coro *coro; |
1958 |
for (coro = coro_first; coro; coro = coro->next) |
1959 |
if (coro->hv) |
1960 |
XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
1961 |
} |
1962 |
|
1963 |
void |
1964 |
call (Coro::State coro, SV *coderef) |
1965 |
ALIAS: |
1966 |
eval = 1 |
1967 |
CODE: |
1968 |
{ |
1969 |
if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
1970 |
{ |
1971 |
struct coro temp; |
1972 |
|
1973 |
if (!(coro->flags & CF_RUNNING)) |
1974 |
{ |
1975 |
PUTBACK; |
1976 |
save_perl (aTHX_ &temp); |
1977 |
load_perl (aTHX_ coro); |
1978 |
} |
1979 |
|
1980 |
{ |
1981 |
dSP; |
1982 |
ENTER; |
1983 |
SAVETMPS; |
1984 |
PUTBACK; |
1985 |
PUSHSTACK; |
1986 |
PUSHMARK (SP); |
1987 |
|
1988 |
if (ix) |
1989 |
eval_sv (coderef, 0); |
1990 |
else |
1991 |
call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1992 |
|
1993 |
POPSTACK; |
1994 |
SPAGAIN; |
1995 |
FREETMPS; |
1996 |
LEAVE; |
1997 |
PUTBACK; |
1998 |
} |
1999 |
|
2000 |
if (!(coro->flags & CF_RUNNING)) |
2001 |
{ |
2002 |
save_perl (aTHX_ coro); |
2003 |
load_perl (aTHX_ &temp); |
2004 |
SPAGAIN; |
2005 |
} |
2006 |
} |
2007 |
} |
2008 |
|
2009 |
SV * |
2010 |
is_ready (Coro::State coro) |
2011 |
PROTOTYPE: $ |
2012 |
ALIAS: |
2013 |
is_ready = CF_READY |
2014 |
is_running = CF_RUNNING |
2015 |
is_new = CF_NEW |
2016 |
is_destroyed = CF_DESTROYED |
2017 |
CODE: |
2018 |
RETVAL = boolSV (coro->flags & ix); |
2019 |
OUTPUT: |
2020 |
RETVAL |
2021 |
|
2022 |
void |
2023 |
api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
2024 |
|
2025 |
SV * |
2026 |
has_cctx (Coro::State coro) |
2027 |
PROTOTYPE: $ |
2028 |
CODE: |
2029 |
RETVAL = boolSV (!!coro->cctx); |
2030 |
OUTPUT: |
2031 |
RETVAL |
2032 |
|
2033 |
int |
2034 |
is_traced (Coro::State coro) |
2035 |
PROTOTYPE: $ |
2036 |
CODE: |
2037 |
RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
2038 |
OUTPUT: |
2039 |
RETVAL |
2040 |
|
2041 |
UV |
2042 |
rss (Coro::State coro) |
2043 |
PROTOTYPE: $ |
2044 |
ALIAS: |
2045 |
usecount = 1 |
2046 |
CODE: |
2047 |
switch (ix) |
2048 |
{ |
2049 |
case 0: RETVAL = coro_rss (aTHX_ coro); break; |
2050 |
case 1: RETVAL = coro->usecount; break; |
2051 |
} |
2052 |
OUTPUT: |
2053 |
RETVAL |
2054 |
|
2055 |
void |
2056 |
force_cctx () |
2057 |
CODE: |
2058 |
struct coro *coro = SvSTATE (coro_current); |
2059 |
coro->cctx->idle_sp = 0; |
2060 |
|
2061 |
void |
2062 |
swap_defsv (Coro::State self) |
2063 |
PROTOTYPE: $ |
2064 |
ALIAS: |
2065 |
swap_defav = 1 |
2066 |
CODE: |
2067 |
if (!self->slot) |
2068 |
croak ("cannot swap state with coroutine that has no saved state"); |
2069 |
else |
2070 |
{ |
2071 |
SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
2072 |
SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
2073 |
|
2074 |
SV *tmp = *src; *src = *dst; *dst = tmp; |
2075 |
} |
2076 |
|
2077 |
MODULE = Coro::State PACKAGE = Coro |
2078 |
|
2079 |
BOOT: |
2080 |
{ |
2081 |
int i; |
2082 |
|
2083 |
av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
2084 |
sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
2085 |
sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
2086 |
|
2087 |
coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); |
2088 |
SvREADONLY_on (coro_current); |
2089 |
|
2090 |
coro_stash = gv_stashpv ("Coro", TRUE); |
2091 |
|
2092 |
newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
2093 |
newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
2094 |
newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
2095 |
newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
2096 |
newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
2097 |
newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
2098 |
|
2099 |
for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
2100 |
coro_ready[i] = newAV (); |
2101 |
|
2102 |
{ |
2103 |
SV *sv = perl_get_sv ("Coro::API", TRUE); |
2104 |
perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */ |
2105 |
|
2106 |
coroapi.schedule = api_schedule; |
2107 |
coroapi.cede = api_cede; |
2108 |
coroapi.cede_notself = api_cede_notself; |
2109 |
coroapi.ready = api_ready; |
2110 |
coroapi.is_ready = api_is_ready; |
2111 |
coroapi.nready = &coro_nready; |
2112 |
coroapi.current = coro_current; |
2113 |
|
2114 |
GCoroAPI = &coroapi; |
2115 |
sv_setiv (sv, (IV)&coroapi); |
2116 |
SvREADONLY_on (sv); |
2117 |
} |
2118 |
} |
2119 |
|
2120 |
void |
2121 |
_set_current (SV *current) |
2122 |
PROTOTYPE: $ |
2123 |
CODE: |
2124 |
SvREFCNT_dec (SvRV (coro_current)); |
2125 |
SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
2126 |
|
2127 |
void |
2128 |
_set_readyhook (SV *hook) |
2129 |
PROTOTYPE: $ |
2130 |
CODE: |
2131 |
LOCK; |
2132 |
SvREFCNT_dec (coro_readyhook); |
2133 |
coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; |
2134 |
UNLOCK; |
2135 |
|
2136 |
int |
2137 |
prio (Coro::State coro, int newprio = 0) |
2138 |
ALIAS: |
2139 |
nice = 1 |
2140 |
CODE: |
2141 |
{ |
2142 |
RETVAL = coro->prio; |
2143 |
|
2144 |
if (items > 1) |
2145 |
{ |
2146 |
if (ix) |
2147 |
newprio = coro->prio - newprio; |
2148 |
|
2149 |
if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
2150 |
if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
2151 |
|
2152 |
coro->prio = newprio; |
2153 |
} |
2154 |
} |
2155 |
OUTPUT: |
2156 |
RETVAL |
2157 |
|
2158 |
SV * |
2159 |
ready (SV *self) |
2160 |
PROTOTYPE: $ |
2161 |
CODE: |
2162 |
RETVAL = boolSV (api_ready (self)); |
2163 |
OUTPUT: |
2164 |
RETVAL |
2165 |
|
2166 |
int |
2167 |
nready (...) |
2168 |
PROTOTYPE: |
2169 |
CODE: |
2170 |
RETVAL = coro_nready; |
2171 |
OUTPUT: |
2172 |
RETVAL |
2173 |
|
2174 |
void |
2175 |
throw (Coro::State self, SV *throw = &PL_sv_undef) |
2176 |
PROTOTYPE: $;$ |
2177 |
CODE: |
2178 |
SvREFCNT_dec (self->throw); |
2179 |
self->throw = SvOK (throw) ? newSVsv (throw) : 0; |
2180 |
|
2181 |
# for async_pool speedup |
2182 |
void |
2183 |
_pool_1 (SV *cb) |
2184 |
CODE: |
2185 |
{ |
2186 |
struct coro *coro = SvSTATE (coro_current); |
2187 |
HV *hv = (HV *)SvRV (coro_current); |
2188 |
AV *defav = GvAV (PL_defgv); |
2189 |
SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); |
2190 |
AV *invoke_av; |
2191 |
int i, len; |
2192 |
|
2193 |
if (!invoke) |
2194 |
{ |
2195 |
SV *old = PL_diehook; |
2196 |
PL_diehook = 0; |
2197 |
SvREFCNT_dec (old); |
2198 |
croak ("\3async_pool terminate\2\n"); |
2199 |
} |
2200 |
|
2201 |
SvREFCNT_dec (coro->saved_deffh); |
2202 |
coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
2203 |
|
2204 |
hv_store (hv, "desc", sizeof ("desc") - 1, |
2205 |
newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
2206 |
|
2207 |
invoke_av = (AV *)SvRV (invoke); |
2208 |
len = av_len (invoke_av); |
2209 |
|
2210 |
sv_setsv (cb, AvARRAY (invoke_av)[0]); |
2211 |
|
2212 |
if (len > 0) |
2213 |
{ |
2214 |
av_fill (defav, len - 1); |
2215 |
for (i = 0; i < len; ++i) |
2216 |
av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); |
2217 |
} |
2218 |
|
2219 |
SvREFCNT_dec (invoke); |
2220 |
} |
2221 |
|
2222 |
void |
2223 |
_pool_2 (SV *cb) |
2224 |
CODE: |
2225 |
{ |
2226 |
struct coro *coro = SvSTATE (coro_current); |
2227 |
|
2228 |
sv_setsv (cb, &PL_sv_undef); |
2229 |
|
2230 |
SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
2231 |
coro->saved_deffh = 0; |
2232 |
|
2233 |
if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
2234 |
|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
2235 |
{ |
2236 |
SV *old = PL_diehook; |
2237 |
PL_diehook = 0; |
2238 |
SvREFCNT_dec (old); |
2239 |
croak ("\3async_pool terminate\2\n"); |
2240 |
} |
2241 |
|
2242 |
av_clear (GvAV (PL_defgv)); |
2243 |
hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, |
2244 |
newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
2245 |
|
2246 |
coro->prio = 0; |
2247 |
|
2248 |
if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
2249 |
api_trace (coro_current, 0); |
2250 |
|
2251 |
av_push (av_async_pool, newSVsv (coro_current)); |
2252 |
} |
2253 |
|
2254 |
#if 0 |
2255 |
|
2256 |
void |
2257 |
_generator_call (...) |
2258 |
PROTOTYPE: @ |
2259 |
PPCODE: |
2260 |
fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr); |
2261 |
xxxx |
2262 |
abort (); |
2263 |
|
2264 |
SV * |
2265 |
gensub (SV *sub, ...) |
2266 |
PROTOTYPE: &;@ |
2267 |
CODE: |
2268 |
{ |
2269 |
struct coro *coro; |
2270 |
MAGIC *mg; |
2271 |
CV *xcv; |
2272 |
CV *ncv = (CV *)newSV_type (SVt_PVCV); |
2273 |
int i; |
2274 |
|
2275 |
CvGV (ncv) = CvGV (cv); |
2276 |
CvFILE (ncv) = CvFILE (cv); |
2277 |
|
2278 |
Newz (0, coro, 1, struct coro); |
2279 |
coro->args = newAV (); |
2280 |
coro->flags = CF_NEW; |
2281 |
|
2282 |
av_extend (coro->args, items - 1); |
2283 |
for (i = 1; i < items; i++) |
2284 |
av_push (coro->args, newSVsv (ST (i))); |
2285 |
|
2286 |
CvISXSUB_on (ncv); |
2287 |
CvXSUBANY (ncv).any_ptr = (void *)coro; |
2288 |
|
2289 |
xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV)); |
2290 |
|
2291 |
CvXSUB (ncv) = CvXSUB (xcv); |
2292 |
CvANON_on (ncv); |
2293 |
|
2294 |
mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0); |
2295 |
RETVAL = newRV_noinc ((SV *)ncv); |
2296 |
} |
2297 |
OUTPUT: |
2298 |
RETVAL |
2299 |
|
2300 |
#endif |
2301 |
|
2302 |
|
2303 |
MODULE = Coro::State PACKAGE = Coro::AIO |
2304 |
|
2305 |
void |
2306 |
_get_state (SV *self) |
2307 |
PPCODE: |
2308 |
{ |
2309 |
AV *defav = GvAV (PL_defgv); |
2310 |
AV *av = newAV (); |
2311 |
int i; |
2312 |
SV *data_sv = newSV (sizeof (struct io_state)); |
2313 |
struct io_state *data = (struct io_state *)SvPVX (data_sv); |
2314 |
SvCUR_set (data_sv, sizeof (struct io_state)); |
2315 |
SvPOK_only (data_sv); |
2316 |
|
2317 |
data->errorno = errno; |
2318 |
data->laststype = PL_laststype; |
2319 |
data->laststatval = PL_laststatval; |
2320 |
data->statcache = PL_statcache; |
2321 |
|
2322 |
av_extend (av, AvFILLp (defav) + 1 + 1); |
2323 |
|
2324 |
for (i = 0; i <= AvFILLp (defav); ++i) |
2325 |
av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); |
2326 |
|
2327 |
av_push (av, data_sv); |
2328 |
|
2329 |
XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
2330 |
|
2331 |
api_ready (self); |
2332 |
} |
2333 |
|
2334 |
void |
2335 |
_set_state (SV *state) |
2336 |
PROTOTYPE: $ |
2337 |
PPCODE: |
2338 |
{ |
2339 |
AV *av = (AV *)SvRV (state); |
2340 |
struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); |
2341 |
int i; |
2342 |
|
2343 |
errno = data->errorno; |
2344 |
PL_laststype = data->laststype; |
2345 |
PL_laststatval = data->laststatval; |
2346 |
PL_statcache = data->statcache; |
2347 |
|
2348 |
EXTEND (SP, AvFILLp (av)); |
2349 |
for (i = 0; i < AvFILLp (av); ++i) |
2350 |
PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); |
2351 |
} |
2352 |
|
2353 |
|
2354 |
MODULE = Coro::State PACKAGE = Coro::AnyEvent |
2355 |
|
2356 |
BOOT: |
2357 |
sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
2358 |
|
2359 |
SV * |
2360 |
_schedule (...) |
2361 |
PROTOTYPE: @ |
2362 |
CODE: |
2363 |
{ |
2364 |
static int incede; |
2365 |
|
2366 |
api_cede_notself (); |
2367 |
|
2368 |
++incede; |
2369 |
while (coro_nready >= incede && api_cede ()) |
2370 |
; |
2371 |
|
2372 |
sv_setsv (sv_activity, &PL_sv_undef); |
2373 |
if (coro_nready >= incede) |
2374 |
{ |
2375 |
PUSHMARK (SP); |
2376 |
PUTBACK; |
2377 |
call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); |
2378 |
SPAGAIN; |
2379 |
} |
2380 |
|
2381 |
--incede; |
2382 |
} |
2383 |
|
2384 |
|
2385 |
MODULE = Coro::State PACKAGE = PerlIO::cede |
2386 |
|
2387 |
BOOT: |
2388 |
PerlIO_define_layer (aTHX_ &PerlIO_cede); |