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 |
static volatile char next_has_throw; /* speedup flag for next->throw check */ |
187 |
|
188 |
static GV *irsgv; /* $/ */ |
189 |
static GV *stdoutgv; /* *STDOUT */ |
190 |
static SV *rv_diehook; |
191 |
static SV *rv_warnhook; |
192 |
static HV *hv_sig; /* %SIG */ |
193 |
|
194 |
/* async_pool helper stuff */ |
195 |
static SV *sv_pool_rss; |
196 |
static SV *sv_pool_size; |
197 |
static AV *av_async_pool; |
198 |
|
199 |
/* Coro::AnyEvent */ |
200 |
static SV *sv_activity; |
201 |
|
202 |
static struct coro_cctx *cctx_first; |
203 |
static int cctx_count, cctx_idle; |
204 |
|
205 |
enum { |
206 |
CC_MAPPED = 0x01, |
207 |
CC_NOREUSE = 0x02, /* throw this away after tracing */ |
208 |
CC_TRACE = 0x04, |
209 |
CC_TRACE_SUB = 0x08, /* trace sub calls */ |
210 |
CC_TRACE_LINE = 0x10, /* trace each statement */ |
211 |
CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
212 |
}; |
213 |
|
214 |
/* this is a structure representing a c-level coroutine */ |
215 |
typedef struct coro_cctx { |
216 |
struct coro_cctx *next; |
217 |
|
218 |
/* the stack */ |
219 |
void *sptr; |
220 |
size_t ssize; |
221 |
|
222 |
/* cpu state */ |
223 |
void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
224 |
JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
225 |
JMPENV *top_env; |
226 |
coro_context cctx; |
227 |
|
228 |
U32 gen; |
229 |
#if CORO_USE_VALGRIND |
230 |
int valgrind_id; |
231 |
#endif |
232 |
unsigned char flags; |
233 |
} coro_cctx; |
234 |
|
235 |
enum { |
236 |
CF_RUNNING = 0x0001, /* coroutine is running */ |
237 |
CF_READY = 0x0002, /* coroutine is ready */ |
238 |
CF_NEW = 0x0004, /* has never been switched to */ |
239 |
CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
240 |
}; |
241 |
|
242 |
/* the structure where most of the perl state is stored, overlaid on the cxstack */ |
243 |
typedef struct { |
244 |
SV *defsv; |
245 |
AV *defav; |
246 |
SV *errsv; |
247 |
SV *irsgv; |
248 |
#define VAR(name,type) type name; |
249 |
# include "state.h" |
250 |
#undef VAR |
251 |
} perl_slots; |
252 |
|
253 |
#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
254 |
|
255 |
/* this is a structure representing a perl-level coroutine */ |
256 |
struct coro { |
257 |
/* the c coroutine allocated to this perl coroutine, if any */ |
258 |
coro_cctx *cctx; |
259 |
|
260 |
/* process data */ |
261 |
AV *mainstack; |
262 |
perl_slots *slot; /* basically the saved sp */ |
263 |
|
264 |
AV *args; /* data associated with this coroutine (initial args) */ |
265 |
int refcnt; /* coroutines are refcounted, yes */ |
266 |
int flags; /* CF_ flags */ |
267 |
HV *hv; /* the perl hash associated with this coro, if any */ |
268 |
|
269 |
/* statistics */ |
270 |
int usecount; /* number of transfers to this coro */ |
271 |
|
272 |
/* coro process data */ |
273 |
int prio; |
274 |
SV *throw; /* exception to be thrown */ |
275 |
|
276 |
/* async_pool */ |
277 |
SV *saved_deffh; |
278 |
|
279 |
/* linked list */ |
280 |
struct coro *next, *prev; |
281 |
}; |
282 |
|
283 |
typedef struct coro *Coro__State; |
284 |
typedef struct coro *Coro__State_or_hashref; |
285 |
|
286 |
/** Coro ********************************************************************/ |
287 |
|
288 |
#define PRIO_MAX 3 |
289 |
#define PRIO_HIGH 1 |
290 |
#define PRIO_NORMAL 0 |
291 |
#define PRIO_LOW -1 |
292 |
#define PRIO_IDLE -3 |
293 |
#define PRIO_MIN -4 |
294 |
|
295 |
/* for Coro.pm */ |
296 |
static SV *coro_current; |
297 |
static SV *coro_readyhook; |
298 |
static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; |
299 |
static int coro_nready; |
300 |
static struct coro *coro_first; |
301 |
|
302 |
/** lowlevel stuff **********************************************************/ |
303 |
|
304 |
static SV * |
305 |
coro_get_sv (pTHX_ const char *name, int create) |
306 |
{ |
307 |
#if PERL_VERSION_ATLEAST (5,10,0) |
308 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
309 |
get_sv (name, create); |
310 |
#endif |
311 |
return get_sv (name, create); |
312 |
} |
313 |
|
314 |
static AV * |
315 |
coro_get_av (pTHX_ const char *name, int create) |
316 |
{ |
317 |
#if PERL_VERSION_ATLEAST (5,10,0) |
318 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
319 |
get_av (name, create); |
320 |
#endif |
321 |
return get_av (name, create); |
322 |
} |
323 |
|
324 |
static HV * |
325 |
coro_get_hv (pTHX_ const char *name, int create) |
326 |
{ |
327 |
#if PERL_VERSION_ATLEAST (5,10,0) |
328 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
329 |
get_hv (name, create); |
330 |
#endif |
331 |
return get_hv (name, create); |
332 |
} |
333 |
|
334 |
static AV * |
335 |
coro_clone_padlist (pTHX_ CV *cv) |
336 |
{ |
337 |
AV *padlist = CvPADLIST (cv); |
338 |
AV *newpadlist, *newpad; |
339 |
|
340 |
newpadlist = newAV (); |
341 |
AvREAL_off (newpadlist); |
342 |
#if PERL_VERSION_ATLEAST (5,10,0) |
343 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
344 |
#else |
345 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
346 |
#endif |
347 |
newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
348 |
--AvFILLp (padlist); |
349 |
|
350 |
av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); |
351 |
av_store (newpadlist, 1, (SV *)newpad); |
352 |
|
353 |
return newpadlist; |
354 |
} |
355 |
|
356 |
static void |
357 |
free_padlist (pTHX_ AV *padlist) |
358 |
{ |
359 |
/* may be during global destruction */ |
360 |
if (SvREFCNT (padlist)) |
361 |
{ |
362 |
I32 i = AvFILLp (padlist); |
363 |
while (i >= 0) |
364 |
{ |
365 |
SV **svp = av_fetch (padlist, i--, FALSE); |
366 |
if (svp) |
367 |
{ |
368 |
SV *sv; |
369 |
while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
370 |
SvREFCNT_dec (sv); |
371 |
|
372 |
SvREFCNT_dec (*svp); |
373 |
} |
374 |
} |
375 |
|
376 |
SvREFCNT_dec ((SV*)padlist); |
377 |
} |
378 |
} |
379 |
|
380 |
static int |
381 |
coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
382 |
{ |
383 |
AV *padlist; |
384 |
AV *av = (AV *)mg->mg_obj; |
385 |
|
386 |
/* casting is fun. */ |
387 |
while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
388 |
free_padlist (aTHX_ padlist); |
389 |
|
390 |
SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
391 |
|
392 |
return 0; |
393 |
} |
394 |
|
395 |
#define CORO_MAGIC_type_cv PERL_MAGIC_ext |
396 |
#define CORO_MAGIC_type_state PERL_MAGIC_ext |
397 |
|
398 |
static MGVTBL coro_cv_vtbl = { |
399 |
0, 0, 0, 0, |
400 |
coro_cv_free |
401 |
}; |
402 |
|
403 |
#define CORO_MAGIC(sv, type) \ |
404 |
SvMAGIC (sv) \ |
405 |
? SvMAGIC (sv)->mg_type == type \ |
406 |
? SvMAGIC (sv) \ |
407 |
: mg_find (sv, type) \ |
408 |
: 0 |
409 |
|
410 |
#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
411 |
#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) |
412 |
|
413 |
static struct coro * |
414 |
SvSTATE_ (pTHX_ SV *coro) |
415 |
{ |
416 |
HV *stash; |
417 |
MAGIC *mg; |
418 |
|
419 |
if (SvROK (coro)) |
420 |
coro = SvRV (coro); |
421 |
|
422 |
if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
423 |
croak ("Coro::State object required"); |
424 |
|
425 |
stash = SvSTASH (coro); |
426 |
if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
427 |
{ |
428 |
/* very slow, but rare, check */ |
429 |
if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
430 |
croak ("Coro::State object required"); |
431 |
} |
432 |
|
433 |
mg = CORO_MAGIC_state (coro); |
434 |
return (struct coro *)mg->mg_ptr; |
435 |
} |
436 |
|
437 |
#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
438 |
|
439 |
/* the next two functions merely cache the padlists */ |
440 |
static void |
441 |
get_padlist (pTHX_ CV *cv) |
442 |
{ |
443 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
444 |
AV *av; |
445 |
|
446 |
if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
447 |
CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
448 |
else |
449 |
{ |
450 |
#if CORO_PREFER_PERL_FUNCTIONS |
451 |
/* this is probably cleaner? but also slower! */ |
452 |
/* in practise, it seems to be less stable */ |
453 |
CV *cp = Perl_cv_clone (cv); |
454 |
CvPADLIST (cv) = CvPADLIST (cp); |
455 |
CvPADLIST (cp) = 0; |
456 |
SvREFCNT_dec (cp); |
457 |
#else |
458 |
CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
459 |
#endif |
460 |
} |
461 |
} |
462 |
|
463 |
static void |
464 |
put_padlist (pTHX_ CV *cv) |
465 |
{ |
466 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
467 |
AV *av; |
468 |
|
469 |
if (expect_false (!mg)) |
470 |
mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
471 |
|
472 |
av = (AV *)mg->mg_obj; |
473 |
|
474 |
if (expect_false (AvFILLp (av) >= AvMAX (av))) |
475 |
av_extend (av, AvMAX (av) + 1); |
476 |
|
477 |
AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
478 |
} |
479 |
|
480 |
/** load & save, init *******************************************************/ |
481 |
|
482 |
static void |
483 |
load_perl (pTHX_ Coro__State c) |
484 |
{ |
485 |
perl_slots *slot = c->slot; |
486 |
c->slot = 0; |
487 |
|
488 |
PL_mainstack = c->mainstack; |
489 |
|
490 |
GvSV (PL_defgv) = slot->defsv; |
491 |
GvAV (PL_defgv) = slot->defav; |
492 |
GvSV (PL_errgv) = slot->errsv; |
493 |
GvSV (irsgv) = slot->irsgv; |
494 |
|
495 |
#define VAR(name,type) PL_ ## name = slot->name; |
496 |
# include "state.h" |
497 |
#undef VAR |
498 |
|
499 |
{ |
500 |
dSP; |
501 |
|
502 |
CV *cv; |
503 |
|
504 |
/* now do the ugly restore mess */ |
505 |
while (expect_true (cv = (CV *)POPs)) |
506 |
{ |
507 |
put_padlist (aTHX_ cv); /* mark this padlist as available */ |
508 |
CvDEPTH (cv) = PTR2IV (POPs); |
509 |
CvPADLIST (cv) = (AV *)POPs; |
510 |
} |
511 |
|
512 |
PUTBACK; |
513 |
} |
514 |
} |
515 |
|
516 |
static void |
517 |
save_perl (pTHX_ Coro__State c) |
518 |
{ |
519 |
{ |
520 |
dSP; |
521 |
I32 cxix = cxstack_ix; |
522 |
PERL_CONTEXT *ccstk = cxstack; |
523 |
PERL_SI *top_si = PL_curstackinfo; |
524 |
|
525 |
/* |
526 |
* the worst thing you can imagine happens first - we have to save |
527 |
* (and reinitialize) all cv's in the whole callchain :( |
528 |
*/ |
529 |
|
530 |
XPUSHs (Nullsv); |
531 |
/* this loop was inspired by pp_caller */ |
532 |
for (;;) |
533 |
{ |
534 |
while (expect_true (cxix >= 0)) |
535 |
{ |
536 |
PERL_CONTEXT *cx = &ccstk[cxix--]; |
537 |
|
538 |
if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) |
539 |
{ |
540 |
CV *cv = cx->blk_sub.cv; |
541 |
|
542 |
if (expect_true (CvDEPTH (cv))) |
543 |
{ |
544 |
EXTEND (SP, 3); |
545 |
PUSHs ((SV *)CvPADLIST (cv)); |
546 |
PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
547 |
PUSHs ((SV *)cv); |
548 |
|
549 |
CvDEPTH (cv) = 0; |
550 |
get_padlist (aTHX_ cv); |
551 |
} |
552 |
} |
553 |
} |
554 |
|
555 |
if (expect_true (top_si->si_type == PERLSI_MAIN)) |
556 |
break; |
557 |
|
558 |
top_si = top_si->si_prev; |
559 |
ccstk = top_si->si_cxstack; |
560 |
cxix = top_si->si_cxix; |
561 |
} |
562 |
|
563 |
PUTBACK; |
564 |
} |
565 |
|
566 |
/* allocate some space on the context stack for our purposes */ |
567 |
/* we manually unroll here, as usually 2 slots is enough */ |
568 |
if (SLOT_COUNT >= 1) CXINC; |
569 |
if (SLOT_COUNT >= 2) CXINC; |
570 |
if (SLOT_COUNT >= 3) CXINC; |
571 |
{ |
572 |
int i; |
573 |
for (i = 3; i < SLOT_COUNT; ++i) |
574 |
CXINC; |
575 |
} |
576 |
cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
577 |
|
578 |
c->mainstack = PL_mainstack; |
579 |
|
580 |
{ |
581 |
perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
582 |
|
583 |
slot->defav = GvAV (PL_defgv); |
584 |
slot->defsv = DEFSV; |
585 |
slot->errsv = ERRSV; |
586 |
slot->irsgv = GvSV (irsgv); |
587 |
|
588 |
#define VAR(name,type) slot->name = PL_ ## name; |
589 |
# include "state.h" |
590 |
#undef VAR |
591 |
} |
592 |
} |
593 |
|
594 |
/* |
595 |
* allocate various perl stacks. This is an exact copy |
596 |
* of perl.c:init_stacks, except that it uses less memory |
597 |
* on the (sometimes correct) assumption that coroutines do |
598 |
* not usually need a lot of stackspace. |
599 |
*/ |
600 |
#if CORO_PREFER_PERL_FUNCTIONS |
601 |
# define coro_init_stacks init_stacks |
602 |
#else |
603 |
static void |
604 |
coro_init_stacks (pTHX) |
605 |
{ |
606 |
PL_curstackinfo = new_stackinfo(32, 8); |
607 |
PL_curstackinfo->si_type = PERLSI_MAIN; |
608 |
PL_curstack = PL_curstackinfo->si_stack; |
609 |
PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
610 |
|
611 |
PL_stack_base = AvARRAY(PL_curstack); |
612 |
PL_stack_sp = PL_stack_base; |
613 |
PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
614 |
|
615 |
New(50,PL_tmps_stack,32,SV*); |
616 |
PL_tmps_floor = -1; |
617 |
PL_tmps_ix = -1; |
618 |
PL_tmps_max = 32; |
619 |
|
620 |
New(54,PL_markstack,16,I32); |
621 |
PL_markstack_ptr = PL_markstack; |
622 |
PL_markstack_max = PL_markstack + 16; |
623 |
|
624 |
#ifdef SET_MARK_OFFSET |
625 |
SET_MARK_OFFSET; |
626 |
#endif |
627 |
|
628 |
New(54,PL_scopestack,8,I32); |
629 |
PL_scopestack_ix = 0; |
630 |
PL_scopestack_max = 8; |
631 |
|
632 |
New(54,PL_savestack,24,ANY); |
633 |
PL_savestack_ix = 0; |
634 |
PL_savestack_max = 24; |
635 |
|
636 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
637 |
New(54,PL_retstack,4,OP*); |
638 |
PL_retstack_ix = 0; |
639 |
PL_retstack_max = 4; |
640 |
#endif |
641 |
} |
642 |
#endif |
643 |
|
644 |
/* |
645 |
* destroy the stacks, the callchain etc... |
646 |
*/ |
647 |
static void |
648 |
coro_destruct_stacks (pTHX) |
649 |
{ |
650 |
while (PL_curstackinfo->si_next) |
651 |
PL_curstackinfo = PL_curstackinfo->si_next; |
652 |
|
653 |
while (PL_curstackinfo) |
654 |
{ |
655 |
PERL_SI *p = PL_curstackinfo->si_prev; |
656 |
|
657 |
if (!IN_DESTRUCT) |
658 |
SvREFCNT_dec (PL_curstackinfo->si_stack); |
659 |
|
660 |
Safefree (PL_curstackinfo->si_cxstack); |
661 |
Safefree (PL_curstackinfo); |
662 |
PL_curstackinfo = p; |
663 |
} |
664 |
|
665 |
Safefree (PL_tmps_stack); |
666 |
Safefree (PL_markstack); |
667 |
Safefree (PL_scopestack); |
668 |
Safefree (PL_savestack); |
669 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
670 |
Safefree (PL_retstack); |
671 |
#endif |
672 |
} |
673 |
|
674 |
static size_t |
675 |
coro_rss (pTHX_ struct coro *coro) |
676 |
{ |
677 |
size_t rss = sizeof (*coro); |
678 |
|
679 |
if (coro->mainstack) |
680 |
{ |
681 |
perl_slots tmp_slot; |
682 |
perl_slots *slot; |
683 |
|
684 |
if (coro->flags & CF_RUNNING) |
685 |
{ |
686 |
slot = &tmp_slot; |
687 |
|
688 |
#define VAR(name,type) slot->name = PL_ ## name; |
689 |
# include "state.h" |
690 |
#undef VAR |
691 |
} |
692 |
else |
693 |
slot = coro->slot; |
694 |
|
695 |
if (slot) |
696 |
{ |
697 |
rss += sizeof (slot->curstackinfo); |
698 |
rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); |
699 |
rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); |
700 |
rss += slot->tmps_max * sizeof (SV *); |
701 |
rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); |
702 |
rss += slot->scopestack_max * sizeof (I32); |
703 |
rss += slot->savestack_max * sizeof (ANY); |
704 |
|
705 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
706 |
rss += slot->retstack_max * sizeof (OP *); |
707 |
#endif |
708 |
} |
709 |
} |
710 |
|
711 |
return rss; |
712 |
} |
713 |
|
714 |
/** coroutine stack handling ************************************************/ |
715 |
|
716 |
static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
717 |
static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
718 |
static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
719 |
|
720 |
/* apparently < 5.8.8 */ |
721 |
#ifndef MgPV_nolen_const |
722 |
#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
723 |
SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
724 |
(const char*)(mg)->mg_ptr) |
725 |
#endif |
726 |
|
727 |
/* |
728 |
* This overrides the default magic get method of %SIG elements. |
729 |
* The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
730 |
* and instead of tryign to save and restore the hash elements, we just provide |
731 |
* readback here. |
732 |
* We only do this when the hook is != 0, as they are often set to 0 temporarily, |
733 |
* not expecting this to actually change the hook. This is a potential problem |
734 |
* when a schedule happens then, but we ignore this. |
735 |
*/ |
736 |
static int |
737 |
coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
738 |
{ |
739 |
const char *s = MgPV_nolen_const (mg); |
740 |
|
741 |
if (*s == '_') |
742 |
{ |
743 |
SV **svp = 0; |
744 |
|
745 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
746 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
747 |
|
748 |
if (svp) |
749 |
{ |
750 |
sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
751 |
return 0; |
752 |
} |
753 |
} |
754 |
|
755 |
return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
756 |
} |
757 |
|
758 |
static int |
759 |
coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
760 |
{ |
761 |
const char *s = MgPV_nolen_const (mg); |
762 |
|
763 |
if (*s == '_') |
764 |
{ |
765 |
SV **svp = 0; |
766 |
|
767 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
768 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
769 |
|
770 |
if (svp) |
771 |
{ |
772 |
SV *old = *svp; |
773 |
*svp = 0; |
774 |
SvREFCNT_dec (old); |
775 |
return 0; |
776 |
} |
777 |
} |
778 |
|
779 |
return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
780 |
} |
781 |
|
782 |
static int |
783 |
coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
784 |
{ |
785 |
const char *s = MgPV_nolen_const (mg); |
786 |
|
787 |
if (*s == '_') |
788 |
{ |
789 |
SV **svp = 0; |
790 |
|
791 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
792 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
793 |
|
794 |
if (svp) |
795 |
{ |
796 |
SV *old = *svp; |
797 |
*svp = newSVsv (sv); |
798 |
SvREFCNT_dec (old); |
799 |
return 0; |
800 |
} |
801 |
} |
802 |
|
803 |
return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
804 |
} |
805 |
|
806 |
static void |
807 |
coro_setup (pTHX_ struct coro *coro) |
808 |
{ |
809 |
/* |
810 |
* emulate part of the perl startup here. |
811 |
*/ |
812 |
coro_init_stacks (aTHX); |
813 |
|
814 |
PL_runops = RUNOPS_DEFAULT; |
815 |
PL_curcop = &PL_compiling; |
816 |
PL_in_eval = EVAL_NULL; |
817 |
PL_comppad = 0; |
818 |
PL_curpm = 0; |
819 |
PL_curpad = 0; |
820 |
PL_localizing = 0; |
821 |
PL_dirty = 0; |
822 |
PL_restartop = 0; |
823 |
#if PERL_VERSION_ATLEAST (5,10,0) |
824 |
PL_parser = 0; |
825 |
#endif |
826 |
|
827 |
/* recreate the die/warn hooks */ |
828 |
PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
829 |
PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
830 |
|
831 |
GvSV (PL_defgv) = newSV (0); |
832 |
GvAV (PL_defgv) = coro->args; coro->args = 0; |
833 |
GvSV (PL_errgv) = newSV (0); |
834 |
GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
835 |
PL_rs = newSVsv (GvSV (irsgv)); |
836 |
PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
837 |
|
838 |
{ |
839 |
dSP; |
840 |
LOGOP myop; |
841 |
|
842 |
Zero (&myop, 1, LOGOP); |
843 |
myop.op_next = Nullop; |
844 |
myop.op_flags = OPf_WANT_VOID; |
845 |
|
846 |
PUSHMARK (SP); |
847 |
XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
848 |
PUTBACK; |
849 |
PL_op = (OP *)&myop; |
850 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
851 |
SPAGAIN; |
852 |
} |
853 |
|
854 |
/* this newly created coroutine might be run on an existing cctx which most |
855 |
* likely was suspended in set_stacklevel, called from entersub. |
856 |
* set_stacklevl doesn't do anything on return, but entersub does LEAVE, |
857 |
* so we ENTER here for symmetry |
858 |
*/ |
859 |
ENTER; |
860 |
} |
861 |
|
862 |
static void |
863 |
coro_destruct (pTHX_ struct coro *coro) |
864 |
{ |
865 |
if (!IN_DESTRUCT) |
866 |
{ |
867 |
/* restore all saved variables and stuff */ |
868 |
LEAVE_SCOPE (0); |
869 |
assert (PL_tmps_floor == -1); |
870 |
|
871 |
/* free all temporaries */ |
872 |
FREETMPS; |
873 |
assert (PL_tmps_ix == -1); |
874 |
|
875 |
/* unwind all extra stacks */ |
876 |
POPSTACK_TO (PL_mainstack); |
877 |
|
878 |
/* unwind main stack */ |
879 |
dounwind (-1); |
880 |
} |
881 |
|
882 |
SvREFCNT_dec (GvSV (PL_defgv)); |
883 |
SvREFCNT_dec (GvAV (PL_defgv)); |
884 |
SvREFCNT_dec (GvSV (PL_errgv)); |
885 |
SvREFCNT_dec (PL_defoutgv); |
886 |
SvREFCNT_dec (PL_rs); |
887 |
SvREFCNT_dec (GvSV (irsgv)); |
888 |
|
889 |
SvREFCNT_dec (PL_diehook); |
890 |
SvREFCNT_dec (PL_warnhook); |
891 |
|
892 |
SvREFCNT_dec (coro->saved_deffh); |
893 |
SvREFCNT_dec (coro->throw); |
894 |
|
895 |
coro_destruct_stacks (aTHX); |
896 |
} |
897 |
|
898 |
static void |
899 |
free_coro_mortal (pTHX) |
900 |
{ |
901 |
if (expect_true (coro_mortal)) |
902 |
{ |
903 |
SvREFCNT_dec (coro_mortal); |
904 |
coro_mortal = 0; |
905 |
} |
906 |
} |
907 |
|
908 |
static int |
909 |
runops_trace (pTHX) |
910 |
{ |
911 |
COP *oldcop = 0; |
912 |
int oldcxix = -2; |
913 |
struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ |
914 |
coro_cctx *cctx = coro->cctx; |
915 |
|
916 |
while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
917 |
{ |
918 |
PERL_ASYNC_CHECK (); |
919 |
|
920 |
if (cctx->flags & CC_TRACE_ALL) |
921 |
{ |
922 |
if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) |
923 |
{ |
924 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
925 |
SV **bot, **top; |
926 |
AV *av = newAV (); /* return values */ |
927 |
SV **cb; |
928 |
dSP; |
929 |
|
930 |
GV *gv = CvGV (cx->blk_sub.cv); |
931 |
SV *fullname = sv_2mortal (newSV (0)); |
932 |
if (isGV (gv)) |
933 |
gv_efullname3 (fullname, gv, 0); |
934 |
|
935 |
bot = PL_stack_base + cx->blk_oldsp + 1; |
936 |
top = cx->blk_gimme == G_ARRAY ? SP + 1 |
937 |
: cx->blk_gimme == G_SCALAR ? bot + 1 |
938 |
: bot; |
939 |
|
940 |
av_extend (av, top - bot); |
941 |
while (bot < top) |
942 |
av_push (av, SvREFCNT_inc_NN (*bot++)); |
943 |
|
944 |
PL_runops = RUNOPS_DEFAULT; |
945 |
ENTER; |
946 |
SAVETMPS; |
947 |
EXTEND (SP, 3); |
948 |
PUSHMARK (SP); |
949 |
PUSHs (&PL_sv_no); |
950 |
PUSHs (fullname); |
951 |
PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
952 |
PUTBACK; |
953 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
954 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
955 |
SPAGAIN; |
956 |
FREETMPS; |
957 |
LEAVE; |
958 |
PL_runops = runops_trace; |
959 |
} |
960 |
|
961 |
if (oldcop != PL_curcop) |
962 |
{ |
963 |
oldcop = PL_curcop; |
964 |
|
965 |
if (PL_curcop != &PL_compiling) |
966 |
{ |
967 |
SV **cb; |
968 |
|
969 |
if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) |
970 |
{ |
971 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
972 |
|
973 |
if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
974 |
{ |
975 |
runops_proc_t old_runops = PL_runops; |
976 |
dSP; |
977 |
GV *gv = CvGV (cx->blk_sub.cv); |
978 |
SV *fullname = sv_2mortal (newSV (0)); |
979 |
|
980 |
if (isGV (gv)) |
981 |
gv_efullname3 (fullname, gv, 0); |
982 |
|
983 |
PL_runops = RUNOPS_DEFAULT; |
984 |
ENTER; |
985 |
SAVETMPS; |
986 |
EXTEND (SP, 3); |
987 |
PUSHMARK (SP); |
988 |
PUSHs (&PL_sv_yes); |
989 |
PUSHs (fullname); |
990 |
PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
991 |
PUTBACK; |
992 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
993 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
994 |
SPAGAIN; |
995 |
FREETMPS; |
996 |
LEAVE; |
997 |
PL_runops = runops_trace; |
998 |
} |
999 |
|
1000 |
oldcxix = cxstack_ix; |
1001 |
} |
1002 |
|
1003 |
if (cctx->flags & CC_TRACE_LINE) |
1004 |
{ |
1005 |
dSP; |
1006 |
|
1007 |
PL_runops = RUNOPS_DEFAULT; |
1008 |
ENTER; |
1009 |
SAVETMPS; |
1010 |
EXTEND (SP, 3); |
1011 |
PL_runops = RUNOPS_DEFAULT; |
1012 |
PUSHMARK (SP); |
1013 |
PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
1014 |
PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
1015 |
PUTBACK; |
1016 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
1017 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1018 |
SPAGAIN; |
1019 |
FREETMPS; |
1020 |
LEAVE; |
1021 |
PL_runops = runops_trace; |
1022 |
} |
1023 |
} |
1024 |
} |
1025 |
} |
1026 |
} |
1027 |
|
1028 |
TAINT_NOT; |
1029 |
return 0; |
1030 |
} |
1031 |
|
1032 |
/* inject a fake call to Coro::State::_cctx_init into the execution */ |
1033 |
/* _cctx_init should be careful, as it could be called at almost any time */ |
1034 |
/* during execution of a perl program */ |
1035 |
/* also initialises PL_top_env */ |
1036 |
static void NOINLINE |
1037 |
cctx_prepare (pTHX_ coro_cctx *cctx) |
1038 |
{ |
1039 |
dSP; |
1040 |
LOGOP myop; |
1041 |
|
1042 |
PL_top_env = &PL_start_env; |
1043 |
|
1044 |
if (cctx->flags & CC_TRACE) |
1045 |
PL_runops = runops_trace; |
1046 |
|
1047 |
Zero (&myop, 1, LOGOP); |
1048 |
myop.op_next = PL_op; |
1049 |
myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
1050 |
|
1051 |
PUSHMARK (SP); |
1052 |
EXTEND (SP, 2); |
1053 |
PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
1054 |
PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
1055 |
PUTBACK; |
1056 |
PL_op = (OP *)&myop; |
1057 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
1058 |
SPAGAIN; |
1059 |
} |
1060 |
|
1061 |
/* the tail of transfer: execute stuff we can onyl do afetr a transfer */ |
1062 |
static void |
1063 |
transfer_tail (void) |
1064 |
{ |
1065 |
UNLOCK; |
1066 |
|
1067 |
if (expect_false (next_has_throw)) |
1068 |
{ |
1069 |
struct coro *coro = SvSTATE (coro_current); |
1070 |
|
1071 |
if (coro->throw) |
1072 |
{ |
1073 |
SV *exception = coro->throw; |
1074 |
coro->throw = 0; |
1075 |
sv_setsv (ERRSV, exception); |
1076 |
croak (0); |
1077 |
} |
1078 |
} |
1079 |
} |
1080 |
|
1081 |
/* |
1082 |
* this is a _very_ stripped down perl interpreter ;) |
1083 |
*/ |
1084 |
static void |
1085 |
cctx_run (void *arg) |
1086 |
{ |
1087 |
#ifdef USE_ITHREADS |
1088 |
# if CORO_PTHREAD |
1089 |
PERL_SET_CONTEXT (coro_thx); |
1090 |
# endif |
1091 |
#endif |
1092 |
{ |
1093 |
dTHX; |
1094 |
|
1095 |
/* we now skip the entersub that lead to transfer () */ |
1096 |
PL_op = PL_op->op_next; |
1097 |
|
1098 |
/* inject a fake subroutine call to cctx_init */ |
1099 |
cctx_prepare (aTHX_ (coro_cctx *)arg); |
1100 |
|
1101 |
/* cctx_run is the alternative tail of transfer () */ |
1102 |
transfer_tail (); |
1103 |
|
1104 |
/* somebody or something will hit me for both perl_run and PL_restartop */ |
1105 |
PL_restartop = PL_op; |
1106 |
perl_run (PL_curinterp); |
1107 |
|
1108 |
/* |
1109 |
* If perl-run returns we assume exit() was being called or the coro |
1110 |
* fell off the end, which seems to be the only valid (non-bug) |
1111 |
* reason for perl_run to return. We try to exit by jumping to the |
1112 |
* bootstrap-time "top" top_env, as we cannot restore the "main" |
1113 |
* coroutine as Coro has no such concept |
1114 |
*/ |
1115 |
PL_top_env = main_top_env; |
1116 |
JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
1117 |
} |
1118 |
} |
1119 |
|
1120 |
static coro_cctx * |
1121 |
cctx_new () |
1122 |
{ |
1123 |
coro_cctx *cctx; |
1124 |
|
1125 |
++cctx_count; |
1126 |
New (0, cctx, 1, coro_cctx); |
1127 |
|
1128 |
cctx->gen = cctx_gen; |
1129 |
cctx->flags = 0; |
1130 |
cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel */ |
1131 |
|
1132 |
return cctx; |
1133 |
} |
1134 |
|
1135 |
/* create a new cctx only suitable as source */ |
1136 |
static coro_cctx * |
1137 |
cctx_new_empty () |
1138 |
{ |
1139 |
coro_cctx *cctx = cctx_new (); |
1140 |
|
1141 |
cctx->sptr = 0; |
1142 |
coro_create (&cctx->cctx, 0, 0, 0, 0); |
1143 |
|
1144 |
return cctx; |
1145 |
} |
1146 |
|
1147 |
/* create a new cctx suitable as destination/running a perl interpreter */ |
1148 |
static coro_cctx * |
1149 |
cctx_new_run () |
1150 |
{ |
1151 |
coro_cctx *cctx = cctx_new (); |
1152 |
void *stack_start; |
1153 |
size_t stack_size; |
1154 |
|
1155 |
#if HAVE_MMAP |
1156 |
cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
1157 |
/* mmap supposedly does allocate-on-write for us */ |
1158 |
cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
1159 |
|
1160 |
if (cctx->sptr != (void *)-1) |
1161 |
{ |
1162 |
# if CORO_STACKGUARD |
1163 |
mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
1164 |
# endif |
1165 |
stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; |
1166 |
stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
1167 |
cctx->flags |= CC_MAPPED; |
1168 |
} |
1169 |
else |
1170 |
#endif |
1171 |
{ |
1172 |
cctx->ssize = cctx_stacksize * (long)sizeof (long); |
1173 |
New (0, cctx->sptr, cctx_stacksize, long); |
1174 |
|
1175 |
if (!cctx->sptr) |
1176 |
{ |
1177 |
perror ("FATAL: unable to allocate stack for coroutine"); |
1178 |
_exit (EXIT_FAILURE); |
1179 |
} |
1180 |
|
1181 |
stack_start = cctx->sptr; |
1182 |
stack_size = cctx->ssize; |
1183 |
} |
1184 |
|
1185 |
REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); |
1186 |
coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
1187 |
|
1188 |
return cctx; |
1189 |
} |
1190 |
|
1191 |
static void |
1192 |
cctx_destroy (coro_cctx *cctx) |
1193 |
{ |
1194 |
if (!cctx) |
1195 |
return; |
1196 |
|
1197 |
--cctx_count; |
1198 |
coro_destroy (&cctx->cctx); |
1199 |
|
1200 |
/* coro_transfer creates new, empty cctx's */ |
1201 |
if (cctx->sptr) |
1202 |
{ |
1203 |
#if CORO_USE_VALGRIND |
1204 |
VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
1205 |
#endif |
1206 |
|
1207 |
#if HAVE_MMAP |
1208 |
if (cctx->flags & CC_MAPPED) |
1209 |
munmap (cctx->sptr, cctx->ssize); |
1210 |
else |
1211 |
#endif |
1212 |
Safefree (cctx->sptr); |
1213 |
} |
1214 |
|
1215 |
Safefree (cctx); |
1216 |
} |
1217 |
|
1218 |
/* wether this cctx should be destructed */ |
1219 |
#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
1220 |
|
1221 |
static coro_cctx * |
1222 |
cctx_get (pTHX) |
1223 |
{ |
1224 |
while (expect_true (cctx_first)) |
1225 |
{ |
1226 |
coro_cctx *cctx = cctx_first; |
1227 |
cctx_first = cctx->next; |
1228 |
--cctx_idle; |
1229 |
|
1230 |
if (expect_true (!CCTX_EXPIRED (cctx))) |
1231 |
return cctx; |
1232 |
|
1233 |
cctx_destroy (cctx); |
1234 |
} |
1235 |
|
1236 |
return cctx_new_run (); |
1237 |
} |
1238 |
|
1239 |
static void |
1240 |
cctx_put (coro_cctx *cctx) |
1241 |
{ |
1242 |
assert (("cctx_put called on non-initialised cctx", cctx->sptr)); |
1243 |
|
1244 |
/* free another cctx if overlimit */ |
1245 |
if (expect_false (cctx_idle >= cctx_max_idle)) |
1246 |
{ |
1247 |
coro_cctx *first = cctx_first; |
1248 |
cctx_first = first->next; |
1249 |
--cctx_idle; |
1250 |
|
1251 |
cctx_destroy (first); |
1252 |
} |
1253 |
|
1254 |
++cctx_idle; |
1255 |
cctx->next = cctx_first; |
1256 |
cctx_first = cctx; |
1257 |
} |
1258 |
|
1259 |
/** coroutine switching *****************************************************/ |
1260 |
|
1261 |
static void |
1262 |
transfer_check (pTHX_ struct coro *prev, struct coro *next) |
1263 |
{ |
1264 |
if (expect_true (prev != next)) |
1265 |
{ |
1266 |
if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
1267 |
croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); |
1268 |
|
1269 |
if (expect_false (next->flags & CF_RUNNING)) |
1270 |
croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
1271 |
|
1272 |
if (expect_false (next->flags & CF_DESTROYED)) |
1273 |
croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
1274 |
|
1275 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
1276 |
if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
1277 |
croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); |
1278 |
#endif |
1279 |
} |
1280 |
} |
1281 |
|
1282 |
/* always use the TRANSFER macro */ |
1283 |
static void NOINLINE |
1284 |
transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
1285 |
{ |
1286 |
dSTACKLEVEL; |
1287 |
|
1288 |
/* sometimes transfer is only called to set idle_sp */ |
1289 |
if (expect_false (!next)) |
1290 |
{ |
1291 |
((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
1292 |
assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1293 |
} |
1294 |
else if (expect_true (prev != next)) |
1295 |
{ |
1296 |
coro_cctx *prev__cctx; |
1297 |
|
1298 |
if (expect_false (prev->flags & CF_NEW)) |
1299 |
{ |
1300 |
/* create a new empty/source context */ |
1301 |
prev->cctx = cctx_new_empty (); |
1302 |
prev->flags &= ~CF_NEW; |
1303 |
prev->flags |= CF_RUNNING; |
1304 |
} |
1305 |
|
1306 |
prev->flags &= ~CF_RUNNING; |
1307 |
next->flags |= CF_RUNNING; |
1308 |
|
1309 |
LOCK; |
1310 |
|
1311 |
/* first get rid of the old state */ |
1312 |
save_perl (aTHX_ prev); |
1313 |
|
1314 |
if (expect_false (next->flags & CF_NEW)) |
1315 |
{ |
1316 |
/* need to start coroutine */ |
1317 |
next->flags &= ~CF_NEW; |
1318 |
/* setup coroutine call */ |
1319 |
coro_setup (aTHX_ next); |
1320 |
} |
1321 |
else |
1322 |
load_perl (aTHX_ next); |
1323 |
|
1324 |
prev__cctx = prev->cctx; |
1325 |
|
1326 |
if (prev__cctx->idle_sp == STACKLEVEL) asm volatile("");//D |
1327 |
|
1328 |
/* possibly "free" the cctx */ |
1329 |
if (expect_true ( |
1330 |
prev__cctx->idle_sp == STACKLEVEL |
1331 |
&& !(prev__cctx->flags & CC_TRACE) |
1332 |
&& !force_cctx |
1333 |
)) |
1334 |
{ |
1335 |
/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
1336 |
assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
1337 |
|
1338 |
prev->cctx = 0; |
1339 |
|
1340 |
/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
1341 |
/* without this the next cctx_get might destroy the prev__cctx while still in use */ |
1342 |
if (expect_false (CCTX_EXPIRED (prev__cctx))) |
1343 |
if (!next->cctx) |
1344 |
next->cctx = cctx_get (aTHX); |
1345 |
|
1346 |
cctx_put (prev__cctx); |
1347 |
} |
1348 |
|
1349 |
++next->usecount; |
1350 |
|
1351 |
if (expect_true (!next->cctx)) |
1352 |
next->cctx = cctx_get (aTHX); |
1353 |
|
1354 |
next_has_throw = !!next->throw; |
1355 |
|
1356 |
if (expect_false (prev__cctx != next->cctx)) |
1357 |
{ |
1358 |
prev__cctx->top_env = PL_top_env; |
1359 |
PL_top_env = next->cctx->top_env; |
1360 |
coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
1361 |
} |
1362 |
|
1363 |
free_coro_mortal (aTHX); |
1364 |
UNLOCK; |
1365 |
|
1366 |
transfer_tail (); |
1367 |
} |
1368 |
} |
1369 |
|
1370 |
struct transfer_args |
1371 |
{ |
1372 |
struct coro *prev, *next; |
1373 |
}; |
1374 |
|
1375 |
#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
1376 |
#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
1377 |
|
1378 |
/** high level stuff ********************************************************/ |
1379 |
|
1380 |
static int |
1381 |
coro_state_destroy (pTHX_ struct coro *coro) |
1382 |
{ |
1383 |
if (coro->flags & CF_DESTROYED) |
1384 |
return 0; |
1385 |
|
1386 |
coro->flags |= CF_DESTROYED; |
1387 |
|
1388 |
if (coro->flags & CF_READY) |
1389 |
{ |
1390 |
/* reduce nready, as destroying a ready coro effectively unreadies it */ |
1391 |
/* alternative: look through all ready queues and remove the coro */ |
1392 |
LOCK; |
1393 |
--coro_nready; |
1394 |
UNLOCK; |
1395 |
} |
1396 |
else |
1397 |
coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
1398 |
|
1399 |
if (coro->mainstack && coro->mainstack != main_mainstack) |
1400 |
{ |
1401 |
struct coro temp; |
1402 |
|
1403 |
if (coro->flags & CF_RUNNING) |
1404 |
croak ("FATAL: tried to destroy currently running coroutine"); |
1405 |
|
1406 |
save_perl (aTHX_ &temp); |
1407 |
load_perl (aTHX_ coro); |
1408 |
|
1409 |
coro_destruct (aTHX_ coro); |
1410 |
|
1411 |
load_perl (aTHX_ &temp); |
1412 |
|
1413 |
coro->slot = 0; |
1414 |
} |
1415 |
|
1416 |
cctx_destroy (coro->cctx); |
1417 |
SvREFCNT_dec (coro->args); |
1418 |
|
1419 |
if (coro->next) coro->next->prev = coro->prev; |
1420 |
if (coro->prev) coro->prev->next = coro->next; |
1421 |
if (coro == coro_first) coro_first = coro->next; |
1422 |
|
1423 |
return 1; |
1424 |
} |
1425 |
|
1426 |
static int |
1427 |
coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
1428 |
{ |
1429 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1430 |
mg->mg_ptr = 0; |
1431 |
|
1432 |
coro->hv = 0; |
1433 |
|
1434 |
if (--coro->refcnt < 0) |
1435 |
{ |
1436 |
coro_state_destroy (aTHX_ coro); |
1437 |
Safefree (coro); |
1438 |
} |
1439 |
|
1440 |
return 0; |
1441 |
} |
1442 |
|
1443 |
static int |
1444 |
coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
1445 |
{ |
1446 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1447 |
|
1448 |
++coro->refcnt; |
1449 |
|
1450 |
return 0; |
1451 |
} |
1452 |
|
1453 |
static MGVTBL coro_state_vtbl = { |
1454 |
0, 0, 0, 0, |
1455 |
coro_state_free, |
1456 |
0, |
1457 |
#ifdef MGf_DUP |
1458 |
coro_state_dup, |
1459 |
#else |
1460 |
# define MGf_DUP 0 |
1461 |
#endif |
1462 |
}; |
1463 |
|
1464 |
static void |
1465 |
prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
1466 |
{ |
1467 |
ta->prev = SvSTATE (prev_sv); |
1468 |
ta->next = SvSTATE (next_sv); |
1469 |
TRANSFER_CHECK (*ta); |
1470 |
} |
1471 |
|
1472 |
static void |
1473 |
api_transfer (SV *prev_sv, SV *next_sv) |
1474 |
{ |
1475 |
dTHX; |
1476 |
struct transfer_args ta; |
1477 |
|
1478 |
prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1479 |
TRANSFER (ta, 1); |
1480 |
} |
1481 |
|
1482 |
/** Coro ********************************************************************/ |
1483 |
|
1484 |
static void |
1485 |
coro_enq (pTHX_ SV *coro_sv) |
1486 |
{ |
1487 |
av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
1488 |
} |
1489 |
|
1490 |
static SV * |
1491 |
coro_deq (pTHX) |
1492 |
{ |
1493 |
int prio; |
1494 |
|
1495 |
for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) |
1496 |
if (AvFILLp (coro_ready [prio]) >= 0) |
1497 |
return av_shift (coro_ready [prio]); |
1498 |
|
1499 |
return 0; |
1500 |
} |
1501 |
|
1502 |
static int |
1503 |
api_ready (SV *coro_sv) |
1504 |
{ |
1505 |
dTHX; |
1506 |
struct coro *coro; |
1507 |
SV *sv_hook; |
1508 |
void (*xs_hook)(void); |
1509 |
|
1510 |
if (SvROK (coro_sv)) |
1511 |
coro_sv = SvRV (coro_sv); |
1512 |
|
1513 |
coro = SvSTATE (coro_sv); |
1514 |
|
1515 |
if (coro->flags & CF_READY) |
1516 |
return 0; |
1517 |
|
1518 |
coro->flags |= CF_READY; |
1519 |
|
1520 |
LOCK; |
1521 |
|
1522 |
sv_hook = coro_nready ? 0 : coro_readyhook; |
1523 |
xs_hook = coro_nready ? 0 : coroapi.readyhook; |
1524 |
|
1525 |
coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); |
1526 |
++coro_nready; |
1527 |
|
1528 |
UNLOCK; |
1529 |
|
1530 |
if (sv_hook) |
1531 |
{ |
1532 |
dSP; |
1533 |
|
1534 |
ENTER; |
1535 |
SAVETMPS; |
1536 |
|
1537 |
PUSHMARK (SP); |
1538 |
PUTBACK; |
1539 |
call_sv (sv_hook, G_DISCARD); |
1540 |
SPAGAIN; |
1541 |
|
1542 |
FREETMPS; |
1543 |
LEAVE; |
1544 |
} |
1545 |
|
1546 |
if (xs_hook) |
1547 |
xs_hook (); |
1548 |
|
1549 |
return 1; |
1550 |
} |
1551 |
|
1552 |
static int |
1553 |
api_is_ready (SV *coro_sv) |
1554 |
{ |
1555 |
dTHX; |
1556 |
return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1557 |
} |
1558 |
|
1559 |
static void |
1560 |
prepare_schedule (pTHX_ struct transfer_args *ta) |
1561 |
{ |
1562 |
SV *prev_sv, *next_sv; |
1563 |
|
1564 |
for (;;) |
1565 |
{ |
1566 |
LOCK; |
1567 |
next_sv = coro_deq (aTHX); |
1568 |
|
1569 |
/* nothing to schedule: call the idle handler */ |
1570 |
if (expect_false (!next_sv)) |
1571 |
{ |
1572 |
dSP; |
1573 |
UNLOCK; |
1574 |
|
1575 |
ENTER; |
1576 |
SAVETMPS; |
1577 |
|
1578 |
PUSHMARK (SP); |
1579 |
PUTBACK; |
1580 |
call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
1581 |
SPAGAIN; |
1582 |
|
1583 |
FREETMPS; |
1584 |
LEAVE; |
1585 |
continue; |
1586 |
} |
1587 |
|
1588 |
ta->next = SvSTATE (next_sv); |
1589 |
|
1590 |
/* cannot transfer to destroyed coros, skip and look for next */ |
1591 |
if (expect_false (ta->next->flags & CF_DESTROYED)) |
1592 |
{ |
1593 |
UNLOCK; |
1594 |
SvREFCNT_dec (next_sv); |
1595 |
/* coro_nready is already taken care of by destroy */ |
1596 |
continue; |
1597 |
} |
1598 |
|
1599 |
--coro_nready; |
1600 |
UNLOCK; |
1601 |
break; |
1602 |
} |
1603 |
|
1604 |
/* free this only after the transfer */ |
1605 |
prev_sv = SvRV (coro_current); |
1606 |
ta->prev = SvSTATE (prev_sv); |
1607 |
TRANSFER_CHECK (*ta); |
1608 |
assert (ta->next->flags & CF_READY); |
1609 |
ta->next->flags &= ~CF_READY; |
1610 |
SvRV_set (coro_current, next_sv); |
1611 |
|
1612 |
LOCK; |
1613 |
free_coro_mortal (aTHX); |
1614 |
coro_mortal = prev_sv; |
1615 |
UNLOCK; |
1616 |
} |
1617 |
|
1618 |
static void |
1619 |
prepare_cede (pTHX_ struct transfer_args *ta) |
1620 |
{ |
1621 |
api_ready (coro_current); |
1622 |
prepare_schedule (aTHX_ ta); |
1623 |
} |
1624 |
|
1625 |
static int |
1626 |
prepare_cede_notself (pTHX_ struct transfer_args *ta) |
1627 |
{ |
1628 |
if (coro_nready) |
1629 |
{ |
1630 |
SV *prev = SvRV (coro_current); |
1631 |
prepare_schedule (aTHX_ ta); |
1632 |
api_ready (prev); |
1633 |
return 1; |
1634 |
} |
1635 |
else |
1636 |
return 0; |
1637 |
} |
1638 |
|
1639 |
static void |
1640 |
api_schedule (void) |
1641 |
{ |
1642 |
dTHX; |
1643 |
struct transfer_args ta; |
1644 |
|
1645 |
prepare_schedule (aTHX_ &ta); |
1646 |
TRANSFER (ta, 1); |
1647 |
} |
1648 |
|
1649 |
static int |
1650 |
api_cede (void) |
1651 |
{ |
1652 |
dTHX; |
1653 |
struct transfer_args ta; |
1654 |
|
1655 |
prepare_cede (aTHX_ &ta); |
1656 |
|
1657 |
if (expect_true (ta.prev != ta.next)) |
1658 |
{ |
1659 |
TRANSFER (ta, 1); |
1660 |
return 1; |
1661 |
} |
1662 |
else |
1663 |
return 0; |
1664 |
} |
1665 |
|
1666 |
static int |
1667 |
api_cede_notself (void) |
1668 |
{ |
1669 |
dTHX; |
1670 |
struct transfer_args ta; |
1671 |
|
1672 |
if (prepare_cede_notself (aTHX_ &ta)) |
1673 |
{ |
1674 |
TRANSFER (ta, 1); |
1675 |
return 1; |
1676 |
} |
1677 |
else |
1678 |
return 0; |
1679 |
} |
1680 |
|
1681 |
static void |
1682 |
api_trace (SV *coro_sv, int flags) |
1683 |
{ |
1684 |
dTHX; |
1685 |
struct coro *coro = SvSTATE (coro_sv); |
1686 |
|
1687 |
if (flags & CC_TRACE) |
1688 |
{ |
1689 |
if (!coro->cctx) |
1690 |
coro->cctx = cctx_new_run (); |
1691 |
else if (!(coro->cctx->flags & CC_TRACE)) |
1692 |
croak ("cannot enable tracing on coroutine with custom stack"); |
1693 |
|
1694 |
coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
1695 |
} |
1696 |
else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
1697 |
{ |
1698 |
coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
1699 |
|
1700 |
if (coro->flags & CF_RUNNING) |
1701 |
PL_runops = RUNOPS_DEFAULT; |
1702 |
else |
1703 |
coro->slot->runops = RUNOPS_DEFAULT; |
1704 |
} |
1705 |
} |
1706 |
|
1707 |
#if 0 |
1708 |
static int |
1709 |
coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) |
1710 |
{ |
1711 |
AV *padlist; |
1712 |
AV *av = (AV *)mg->mg_obj; |
1713 |
|
1714 |
abort (); |
1715 |
|
1716 |
return 0; |
1717 |
} |
1718 |
|
1719 |
static MGVTBL coro_gensub_vtbl = { |
1720 |
0, 0, 0, 0, |
1721 |
coro_gensub_free |
1722 |
}; |
1723 |
#endif |
1724 |
|
1725 |
/*****************************************************************************/ |
1726 |
/* PerlIO::cede */ |
1727 |
|
1728 |
typedef struct |
1729 |
{ |
1730 |
PerlIOBuf base; |
1731 |
NV next, every; |
1732 |
} PerlIOCede; |
1733 |
|
1734 |
static IV |
1735 |
PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
1736 |
{ |
1737 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
1738 |
|
1739 |
self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
1740 |
self->next = nvtime () + self->every; |
1741 |
|
1742 |
return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
1743 |
} |
1744 |
|
1745 |
static SV * |
1746 |
PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
1747 |
{ |
1748 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
1749 |
|
1750 |
return newSVnv (self->every); |
1751 |
} |
1752 |
|
1753 |
static IV |
1754 |
PerlIOCede_flush (pTHX_ PerlIO *f) |
1755 |
{ |
1756 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
1757 |
double now = nvtime (); |
1758 |
|
1759 |
if (now >= self->next) |
1760 |
{ |
1761 |
api_cede (); |
1762 |
self->next = now + self->every; |
1763 |
} |
1764 |
|
1765 |
return PerlIOBuf_flush (aTHX_ f); |
1766 |
} |
1767 |
|
1768 |
static PerlIO_funcs PerlIO_cede = |
1769 |
{ |
1770 |
sizeof(PerlIO_funcs), |
1771 |
"cede", |
1772 |
sizeof(PerlIOCede), |
1773 |
PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
1774 |
PerlIOCede_pushed, |
1775 |
PerlIOBuf_popped, |
1776 |
PerlIOBuf_open, |
1777 |
PerlIOBase_binmode, |
1778 |
PerlIOCede_getarg, |
1779 |
PerlIOBase_fileno, |
1780 |
PerlIOBuf_dup, |
1781 |
PerlIOBuf_read, |
1782 |
PerlIOBuf_unread, |
1783 |
PerlIOBuf_write, |
1784 |
PerlIOBuf_seek, |
1785 |
PerlIOBuf_tell, |
1786 |
PerlIOBuf_close, |
1787 |
PerlIOCede_flush, |
1788 |
PerlIOBuf_fill, |
1789 |
PerlIOBase_eof, |
1790 |
PerlIOBase_error, |
1791 |
PerlIOBase_clearerr, |
1792 |
PerlIOBase_setlinebuf, |
1793 |
PerlIOBuf_get_base, |
1794 |
PerlIOBuf_bufsiz, |
1795 |
PerlIOBuf_get_ptr, |
1796 |
PerlIOBuf_get_cnt, |
1797 |
PerlIOBuf_set_ptrcnt, |
1798 |
}; |
1799 |
|
1800 |
|
1801 |
MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
1802 |
|
1803 |
PROTOTYPES: DISABLE |
1804 |
|
1805 |
BOOT: |
1806 |
{ |
1807 |
#ifdef USE_ITHREADS |
1808 |
MUTEX_INIT (&coro_lock); |
1809 |
# if CORO_PTHREAD |
1810 |
coro_thx = PERL_GET_CONTEXT; |
1811 |
# endif |
1812 |
#endif |
1813 |
BOOT_PAGESIZE; |
1814 |
|
1815 |
irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
1816 |
stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
1817 |
|
1818 |
orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
1819 |
orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
1820 |
orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
1821 |
|
1822 |
hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
1823 |
rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
1824 |
rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
1825 |
|
1826 |
coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1827 |
|
1828 |
newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
1829 |
newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
1830 |
newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
1831 |
newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
1832 |
|
1833 |
main_mainstack = PL_mainstack; |
1834 |
main_top_env = PL_top_env; |
1835 |
|
1836 |
while (main_top_env->je_prev) |
1837 |
main_top_env = main_top_env->je_prev; |
1838 |
|
1839 |
coroapi.ver = CORO_API_VERSION; |
1840 |
coroapi.rev = CORO_API_REVISION; |
1841 |
coroapi.transfer = api_transfer; |
1842 |
|
1843 |
{ |
1844 |
SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
1845 |
|
1846 |
if (!svp) croak ("Time::HiRes is required"); |
1847 |
if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); |
1848 |
|
1849 |
nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
1850 |
} |
1851 |
|
1852 |
assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1853 |
} |
1854 |
|
1855 |
SV * |
1856 |
new (char *klass, ...) |
1857 |
CODE: |
1858 |
{ |
1859 |
struct coro *coro; |
1860 |
MAGIC *mg; |
1861 |
HV *hv; |
1862 |
int i; |
1863 |
|
1864 |
Newz (0, coro, 1, struct coro); |
1865 |
coro->args = newAV (); |
1866 |
coro->flags = CF_NEW; |
1867 |
|
1868 |
if (coro_first) coro_first->prev = coro; |
1869 |
coro->next = coro_first; |
1870 |
coro_first = coro; |
1871 |
|
1872 |
coro->hv = hv = newHV (); |
1873 |
mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
1874 |
mg->mg_flags |= MGf_DUP; |
1875 |
RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1876 |
|
1877 |
av_extend (coro->args, items - 1); |
1878 |
for (i = 1; i < items; i++) |
1879 |
av_push (coro->args, newSVsv (ST (i))); |
1880 |
} |
1881 |
OUTPUT: |
1882 |
RETVAL |
1883 |
|
1884 |
# these not obviously related functions are all rolled into the same xs |
1885 |
# function to increase chances that they all will call transfer with the same |
1886 |
# stack offset |
1887 |
void |
1888 |
_set_stacklevel (...) |
1889 |
ALIAS: |
1890 |
Coro::State::transfer = 1 |
1891 |
Coro::schedule = 2 |
1892 |
Coro::cede = 3 |
1893 |
Coro::cede_notself = 4 |
1894 |
CODE: |
1895 |
{ |
1896 |
struct transfer_args ta; |
1897 |
|
1898 |
PUTBACK; |
1899 |
switch (ix) |
1900 |
{ |
1901 |
case 0: |
1902 |
ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1903 |
ta.next = 0; |
1904 |
break; |
1905 |
|
1906 |
case 1: |
1907 |
if (items != 2) |
1908 |
croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items); |
1909 |
|
1910 |
prepare_transfer (aTHX_ &ta, ST (0), ST (1)); |
1911 |
break; |
1912 |
|
1913 |
case 2: |
1914 |
prepare_schedule (aTHX_ &ta); |
1915 |
break; |
1916 |
|
1917 |
case 3: |
1918 |
prepare_cede (aTHX_ &ta); |
1919 |
break; |
1920 |
|
1921 |
case 4: |
1922 |
if (!prepare_cede_notself (aTHX_ &ta)) |
1923 |
XSRETURN_EMPTY; |
1924 |
|
1925 |
break; |
1926 |
} |
1927 |
SPAGAIN; |
1928 |
|
1929 |
BARRIER; |
1930 |
PUTBACK; |
1931 |
TRANSFER (ta, 0); |
1932 |
SPAGAIN; /* might be the sp of a different coroutine now */ |
1933 |
/* be extra careful not to ever do anything after TRANSFER */ |
1934 |
} |
1935 |
|
1936 |
bool |
1937 |
_destroy (SV *coro_sv) |
1938 |
CODE: |
1939 |
RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
1940 |
OUTPUT: |
1941 |
RETVAL |
1942 |
|
1943 |
void |
1944 |
_exit (int code) |
1945 |
PROTOTYPE: $ |
1946 |
CODE: |
1947 |
_exit (code); |
1948 |
|
1949 |
int |
1950 |
cctx_stacksize (int new_stacksize = 0) |
1951 |
CODE: |
1952 |
RETVAL = cctx_stacksize; |
1953 |
if (new_stacksize) |
1954 |
{ |
1955 |
cctx_stacksize = new_stacksize; |
1956 |
++cctx_gen; |
1957 |
} |
1958 |
OUTPUT: |
1959 |
RETVAL |
1960 |
|
1961 |
int |
1962 |
cctx_max_idle (int max_idle = 0) |
1963 |
CODE: |
1964 |
RETVAL = cctx_max_idle; |
1965 |
if (max_idle > 1) |
1966 |
cctx_max_idle = max_idle; |
1967 |
OUTPUT: |
1968 |
RETVAL |
1969 |
|
1970 |
int |
1971 |
cctx_count () |
1972 |
CODE: |
1973 |
RETVAL = cctx_count; |
1974 |
OUTPUT: |
1975 |
RETVAL |
1976 |
|
1977 |
int |
1978 |
cctx_idle () |
1979 |
CODE: |
1980 |
RETVAL = cctx_idle; |
1981 |
OUTPUT: |
1982 |
RETVAL |
1983 |
|
1984 |
void |
1985 |
list () |
1986 |
PPCODE: |
1987 |
{ |
1988 |
struct coro *coro; |
1989 |
for (coro = coro_first; coro; coro = coro->next) |
1990 |
if (coro->hv) |
1991 |
XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
1992 |
} |
1993 |
|
1994 |
void |
1995 |
call (Coro::State coro, SV *coderef) |
1996 |
ALIAS: |
1997 |
eval = 1 |
1998 |
CODE: |
1999 |
{ |
2000 |
if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
2001 |
{ |
2002 |
struct coro temp; |
2003 |
|
2004 |
if (!(coro->flags & CF_RUNNING)) |
2005 |
{ |
2006 |
PUTBACK; |
2007 |
save_perl (aTHX_ &temp); |
2008 |
load_perl (aTHX_ coro); |
2009 |
} |
2010 |
|
2011 |
{ |
2012 |
dSP; |
2013 |
ENTER; |
2014 |
SAVETMPS; |
2015 |
PUTBACK; |
2016 |
PUSHSTACK; |
2017 |
PUSHMARK (SP); |
2018 |
|
2019 |
if (ix) |
2020 |
eval_sv (coderef, 0); |
2021 |
else |
2022 |
call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
2023 |
|
2024 |
POPSTACK; |
2025 |
SPAGAIN; |
2026 |
FREETMPS; |
2027 |
LEAVE; |
2028 |
PUTBACK; |
2029 |
} |
2030 |
|
2031 |
if (!(coro->flags & CF_RUNNING)) |
2032 |
{ |
2033 |
save_perl (aTHX_ coro); |
2034 |
load_perl (aTHX_ &temp); |
2035 |
SPAGAIN; |
2036 |
} |
2037 |
} |
2038 |
} |
2039 |
|
2040 |
SV * |
2041 |
is_ready (Coro::State coro) |
2042 |
PROTOTYPE: $ |
2043 |
ALIAS: |
2044 |
is_ready = CF_READY |
2045 |
is_running = CF_RUNNING |
2046 |
is_new = CF_NEW |
2047 |
is_destroyed = CF_DESTROYED |
2048 |
CODE: |
2049 |
RETVAL = boolSV (coro->flags & ix); |
2050 |
OUTPUT: |
2051 |
RETVAL |
2052 |
|
2053 |
void |
2054 |
api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
2055 |
|
2056 |
SV * |
2057 |
has_cctx (Coro::State coro) |
2058 |
PROTOTYPE: $ |
2059 |
CODE: |
2060 |
RETVAL = boolSV (!!coro->cctx); |
2061 |
OUTPUT: |
2062 |
RETVAL |
2063 |
|
2064 |
int |
2065 |
is_traced (Coro::State coro) |
2066 |
PROTOTYPE: $ |
2067 |
CODE: |
2068 |
RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
2069 |
OUTPUT: |
2070 |
RETVAL |
2071 |
|
2072 |
UV |
2073 |
rss (Coro::State coro) |
2074 |
PROTOTYPE: $ |
2075 |
ALIAS: |
2076 |
usecount = 1 |
2077 |
CODE: |
2078 |
switch (ix) |
2079 |
{ |
2080 |
case 0: RETVAL = coro_rss (aTHX_ coro); break; |
2081 |
case 1: RETVAL = coro->usecount; break; |
2082 |
} |
2083 |
OUTPUT: |
2084 |
RETVAL |
2085 |
|
2086 |
void |
2087 |
force_cctx () |
2088 |
CODE: |
2089 |
struct coro *coro = SvSTATE (coro_current); |
2090 |
coro->cctx->idle_sp = 0; |
2091 |
|
2092 |
void |
2093 |
swap_defsv (Coro::State self) |
2094 |
PROTOTYPE: $ |
2095 |
ALIAS: |
2096 |
swap_defav = 1 |
2097 |
CODE: |
2098 |
if (!self->slot) |
2099 |
croak ("cannot swap state with coroutine that has no saved state"); |
2100 |
else |
2101 |
{ |
2102 |
SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
2103 |
SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
2104 |
|
2105 |
SV *tmp = *src; *src = *dst; *dst = tmp; |
2106 |
} |
2107 |
|
2108 |
MODULE = Coro::State PACKAGE = Coro |
2109 |
|
2110 |
BOOT: |
2111 |
{ |
2112 |
int i; |
2113 |
|
2114 |
av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
2115 |
sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
2116 |
sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
2117 |
|
2118 |
coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); |
2119 |
SvREADONLY_on (coro_current); |
2120 |
|
2121 |
coro_stash = gv_stashpv ("Coro", TRUE); |
2122 |
|
2123 |
newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
2124 |
newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
2125 |
newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
2126 |
newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
2127 |
newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
2128 |
newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
2129 |
|
2130 |
for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
2131 |
coro_ready[i] = newAV (); |
2132 |
|
2133 |
{ |
2134 |
SV *sv = perl_get_sv ("Coro::API", TRUE); |
2135 |
perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */ |
2136 |
|
2137 |
coroapi.schedule = api_schedule; |
2138 |
coroapi.cede = api_cede; |
2139 |
coroapi.cede_notself = api_cede_notself; |
2140 |
coroapi.ready = api_ready; |
2141 |
coroapi.is_ready = api_is_ready; |
2142 |
coroapi.nready = &coro_nready; |
2143 |
coroapi.current = coro_current; |
2144 |
|
2145 |
GCoroAPI = &coroapi; |
2146 |
sv_setiv (sv, (IV)&coroapi); |
2147 |
SvREADONLY_on (sv); |
2148 |
} |
2149 |
} |
2150 |
|
2151 |
void |
2152 |
_set_current (SV *current) |
2153 |
PROTOTYPE: $ |
2154 |
CODE: |
2155 |
SvREFCNT_dec (SvRV (coro_current)); |
2156 |
SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
2157 |
|
2158 |
void |
2159 |
_set_readyhook (SV *hook) |
2160 |
PROTOTYPE: $ |
2161 |
CODE: |
2162 |
LOCK; |
2163 |
SvREFCNT_dec (coro_readyhook); |
2164 |
coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; |
2165 |
UNLOCK; |
2166 |
|
2167 |
int |
2168 |
prio (Coro::State coro, int newprio = 0) |
2169 |
ALIAS: |
2170 |
nice = 1 |
2171 |
CODE: |
2172 |
{ |
2173 |
RETVAL = coro->prio; |
2174 |
|
2175 |
if (items > 1) |
2176 |
{ |
2177 |
if (ix) |
2178 |
newprio = coro->prio - newprio; |
2179 |
|
2180 |
if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
2181 |
if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
2182 |
|
2183 |
coro->prio = newprio; |
2184 |
} |
2185 |
} |
2186 |
OUTPUT: |
2187 |
RETVAL |
2188 |
|
2189 |
SV * |
2190 |
ready (SV *self) |
2191 |
PROTOTYPE: $ |
2192 |
CODE: |
2193 |
RETVAL = boolSV (api_ready (self)); |
2194 |
OUTPUT: |
2195 |
RETVAL |
2196 |
|
2197 |
int |
2198 |
nready (...) |
2199 |
PROTOTYPE: |
2200 |
CODE: |
2201 |
RETVAL = coro_nready; |
2202 |
OUTPUT: |
2203 |
RETVAL |
2204 |
|
2205 |
void |
2206 |
throw (Coro::State self, SV *throw = &PL_sv_undef) |
2207 |
PROTOTYPE: $;$ |
2208 |
CODE: |
2209 |
SvREFCNT_dec (self->throw); |
2210 |
self->throw = SvOK (throw) ? newSVsv (throw) : 0; |
2211 |
|
2212 |
# for async_pool speedup |
2213 |
void |
2214 |
_pool_1 (SV *cb) |
2215 |
CODE: |
2216 |
{ |
2217 |
struct coro *coro = SvSTATE (coro_current); |
2218 |
HV *hv = (HV *)SvRV (coro_current); |
2219 |
AV *defav = GvAV (PL_defgv); |
2220 |
SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); |
2221 |
AV *invoke_av; |
2222 |
int i, len; |
2223 |
|
2224 |
if (!invoke) |
2225 |
{ |
2226 |
SV *old = PL_diehook; |
2227 |
PL_diehook = 0; |
2228 |
SvREFCNT_dec (old); |
2229 |
croak ("\3async_pool terminate\2\n"); |
2230 |
} |
2231 |
|
2232 |
SvREFCNT_dec (coro->saved_deffh); |
2233 |
coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
2234 |
|
2235 |
hv_store (hv, "desc", sizeof ("desc") - 1, |
2236 |
newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
2237 |
|
2238 |
invoke_av = (AV *)SvRV (invoke); |
2239 |
len = av_len (invoke_av); |
2240 |
|
2241 |
sv_setsv (cb, AvARRAY (invoke_av)[0]); |
2242 |
|
2243 |
if (len > 0) |
2244 |
{ |
2245 |
av_fill (defav, len - 1); |
2246 |
for (i = 0; i < len; ++i) |
2247 |
av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); |
2248 |
} |
2249 |
|
2250 |
SvREFCNT_dec (invoke); |
2251 |
} |
2252 |
|
2253 |
void |
2254 |
_pool_2 (SV *cb) |
2255 |
CODE: |
2256 |
{ |
2257 |
struct coro *coro = SvSTATE (coro_current); |
2258 |
|
2259 |
sv_setsv (cb, &PL_sv_undef); |
2260 |
|
2261 |
SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
2262 |
coro->saved_deffh = 0; |
2263 |
|
2264 |
if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
2265 |
|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
2266 |
{ |
2267 |
SV *old = PL_diehook; |
2268 |
PL_diehook = 0; |
2269 |
SvREFCNT_dec (old); |
2270 |
croak ("\3async_pool terminate\2\n"); |
2271 |
} |
2272 |
|
2273 |
av_clear (GvAV (PL_defgv)); |
2274 |
hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, |
2275 |
newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
2276 |
|
2277 |
coro->prio = 0; |
2278 |
|
2279 |
if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
2280 |
api_trace (coro_current, 0); |
2281 |
|
2282 |
av_push (av_async_pool, newSVsv (coro_current)); |
2283 |
} |
2284 |
|
2285 |
#if 0 |
2286 |
|
2287 |
void |
2288 |
_generator_call (...) |
2289 |
PROTOTYPE: @ |
2290 |
PPCODE: |
2291 |
fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr); |
2292 |
xxxx |
2293 |
abort (); |
2294 |
|
2295 |
SV * |
2296 |
gensub (SV *sub, ...) |
2297 |
PROTOTYPE: &;@ |
2298 |
CODE: |
2299 |
{ |
2300 |
struct coro *coro; |
2301 |
MAGIC *mg; |
2302 |
CV *xcv; |
2303 |
CV *ncv = (CV *)newSV_type (SVt_PVCV); |
2304 |
int i; |
2305 |
|
2306 |
CvGV (ncv) = CvGV (cv); |
2307 |
CvFILE (ncv) = CvFILE (cv); |
2308 |
|
2309 |
Newz (0, coro, 1, struct coro); |
2310 |
coro->args = newAV (); |
2311 |
coro->flags = CF_NEW; |
2312 |
|
2313 |
av_extend (coro->args, items - 1); |
2314 |
for (i = 1; i < items; i++) |
2315 |
av_push (coro->args, newSVsv (ST (i))); |
2316 |
|
2317 |
CvISXSUB_on (ncv); |
2318 |
CvXSUBANY (ncv).any_ptr = (void *)coro; |
2319 |
|
2320 |
xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV)); |
2321 |
|
2322 |
CvXSUB (ncv) = CvXSUB (xcv); |
2323 |
CvANON_on (ncv); |
2324 |
|
2325 |
mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0); |
2326 |
RETVAL = newRV_noinc ((SV *)ncv); |
2327 |
} |
2328 |
OUTPUT: |
2329 |
RETVAL |
2330 |
|
2331 |
#endif |
2332 |
|
2333 |
|
2334 |
MODULE = Coro::State PACKAGE = Coro::AIO |
2335 |
|
2336 |
void |
2337 |
_get_state (SV *self) |
2338 |
PPCODE: |
2339 |
{ |
2340 |
AV *defav = GvAV (PL_defgv); |
2341 |
AV *av = newAV (); |
2342 |
int i; |
2343 |
SV *data_sv = newSV (sizeof (struct io_state)); |
2344 |
struct io_state *data = (struct io_state *)SvPVX (data_sv); |
2345 |
SvCUR_set (data_sv, sizeof (struct io_state)); |
2346 |
SvPOK_only (data_sv); |
2347 |
|
2348 |
data->errorno = errno; |
2349 |
data->laststype = PL_laststype; |
2350 |
data->laststatval = PL_laststatval; |
2351 |
data->statcache = PL_statcache; |
2352 |
|
2353 |
av_extend (av, AvFILLp (defav) + 1 + 1); |
2354 |
|
2355 |
for (i = 0; i <= AvFILLp (defav); ++i) |
2356 |
av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); |
2357 |
|
2358 |
av_push (av, data_sv); |
2359 |
|
2360 |
XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
2361 |
|
2362 |
api_ready (self); |
2363 |
} |
2364 |
|
2365 |
void |
2366 |
_set_state (SV *state) |
2367 |
PROTOTYPE: $ |
2368 |
PPCODE: |
2369 |
{ |
2370 |
AV *av = (AV *)SvRV (state); |
2371 |
struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); |
2372 |
int i; |
2373 |
|
2374 |
errno = data->errorno; |
2375 |
PL_laststype = data->laststype; |
2376 |
PL_laststatval = data->laststatval; |
2377 |
PL_statcache = data->statcache; |
2378 |
|
2379 |
EXTEND (SP, AvFILLp (av)); |
2380 |
for (i = 0; i < AvFILLp (av); ++i) |
2381 |
PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); |
2382 |
} |
2383 |
|
2384 |
|
2385 |
MODULE = Coro::State PACKAGE = Coro::AnyEvent |
2386 |
|
2387 |
BOOT: |
2388 |
sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
2389 |
|
2390 |
SV * |
2391 |
_schedule (...) |
2392 |
PROTOTYPE: @ |
2393 |
CODE: |
2394 |
{ |
2395 |
static int incede; |
2396 |
|
2397 |
api_cede_notself (); |
2398 |
|
2399 |
++incede; |
2400 |
while (coro_nready >= incede && api_cede ()) |
2401 |
; |
2402 |
|
2403 |
sv_setsv (sv_activity, &PL_sv_undef); |
2404 |
if (coro_nready >= incede) |
2405 |
{ |
2406 |
PUSHMARK (SP); |
2407 |
PUTBACK; |
2408 |
call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); |
2409 |
SPAGAIN; |
2410 |
} |
2411 |
|
2412 |
--incede; |
2413 |
} |
2414 |
|
2415 |
|
2416 |
MODULE = Coro::State PACKAGE = PerlIO::cede |
2417 |
|
2418 |
BOOT: |
2419 |
PerlIO_define_layer (aTHX_ &PerlIO_cede); |