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 |
#endif |
52 |
|
53 |
/* the maximum number of idle cctx that will be pooled */ |
54 |
static int cctx_max_idle = 4; |
55 |
|
56 |
#define PERL_VERSION_ATLEAST(a,b,c) \ |
57 |
(PERL_REVISION > (a) \ |
58 |
|| (PERL_REVISION == (a) \ |
59 |
&& (PERL_VERSION > (b) \ |
60 |
|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
61 |
|
62 |
#if !PERL_VERSION_ATLEAST (5,6,0) |
63 |
# ifndef PL_ppaddr |
64 |
# define PL_ppaddr ppaddr |
65 |
# endif |
66 |
# ifndef call_sv |
67 |
# define call_sv perl_call_sv |
68 |
# endif |
69 |
# ifndef get_sv |
70 |
# define get_sv perl_get_sv |
71 |
# endif |
72 |
# ifndef get_cv |
73 |
# define get_cv perl_get_cv |
74 |
# endif |
75 |
# ifndef IS_PADGV |
76 |
# define IS_PADGV(v) 0 |
77 |
# endif |
78 |
# ifndef IS_PADCONST |
79 |
# define IS_PADCONST(v) 0 |
80 |
# endif |
81 |
#endif |
82 |
|
83 |
/* 5.11 */ |
84 |
#ifndef CxHASARGS |
85 |
# define CxHASARGS(cx) (cx)->blk_sub.hasargs |
86 |
#endif |
87 |
|
88 |
/* 5.10.0 */ |
89 |
#ifndef SvREFCNT_inc_NN |
90 |
# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) |
91 |
#endif |
92 |
|
93 |
/* 5.8.8 */ |
94 |
#ifndef GV_NOTQUAL |
95 |
# define GV_NOTQUAL 0 |
96 |
#endif |
97 |
#ifndef newSV |
98 |
# define newSV(l) NEWSV(0,l) |
99 |
#endif |
100 |
|
101 |
/* 5.8.7 */ |
102 |
#ifndef SvRV_set |
103 |
# define SvRV_set(s,v) SvRV(s) = (v) |
104 |
#endif |
105 |
|
106 |
#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
107 |
# undef CORO_STACKGUARD |
108 |
#endif |
109 |
|
110 |
#ifndef CORO_STACKGUARD |
111 |
# define CORO_STACKGUARD 0 |
112 |
#endif |
113 |
|
114 |
/* prefer perl internal functions over our own? */ |
115 |
#ifndef CORO_PREFER_PERL_FUNCTIONS |
116 |
# define CORO_PREFER_PERL_FUNCTIONS 0 |
117 |
#endif |
118 |
|
119 |
/* The next macros try to return the current stack pointer, in an as |
120 |
* portable way as possible. */ |
121 |
#if __GNUC__ >= 4 |
122 |
# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) |
123 |
#else |
124 |
# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel |
125 |
#endif |
126 |
|
127 |
#define IN_DESTRUCT (PL_main_cv == Nullcv) |
128 |
|
129 |
#if __GNUC__ >= 3 |
130 |
# define attribute(x) __attribute__(x) |
131 |
# define expect(expr,value) __builtin_expect ((expr),(value)) |
132 |
# define INLINE static inline |
133 |
#else |
134 |
# define attribute(x) |
135 |
# define expect(expr,value) (expr) |
136 |
# define INLINE static |
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 struct coro *transfer_next; |
187 |
|
188 |
struct transfer_args |
189 |
{ |
190 |
struct coro *prev, *next; |
191 |
}; |
192 |
|
193 |
static GV *irsgv; /* $/ */ |
194 |
static GV *stdoutgv; /* *STDOUT */ |
195 |
static SV *rv_diehook; |
196 |
static SV *rv_warnhook; |
197 |
static HV *hv_sig; /* %SIG */ |
198 |
|
199 |
/* async_pool helper stuff */ |
200 |
static SV *sv_pool_rss; |
201 |
static SV *sv_pool_size; |
202 |
static AV *av_async_pool; |
203 |
|
204 |
/* Coro::AnyEvent */ |
205 |
static SV *sv_activity; |
206 |
|
207 |
static struct coro_cctx *cctx_first; |
208 |
static int cctx_count, cctx_idle; |
209 |
|
210 |
enum { |
211 |
CC_MAPPED = 0x01, |
212 |
CC_NOREUSE = 0x02, /* throw this away after tracing */ |
213 |
CC_TRACE = 0x04, |
214 |
CC_TRACE_SUB = 0x08, /* trace sub calls */ |
215 |
CC_TRACE_LINE = 0x10, /* trace each statement */ |
216 |
CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
217 |
}; |
218 |
|
219 |
/* this is a structure representing a c-level coroutine */ |
220 |
typedef struct coro_cctx { |
221 |
struct coro_cctx *next; |
222 |
|
223 |
/* the stack */ |
224 |
void *sptr; |
225 |
size_t ssize; |
226 |
|
227 |
/* cpu state */ |
228 |
void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
229 |
JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
230 |
JMPENV *top_env; |
231 |
coro_context cctx; |
232 |
|
233 |
U32 gen; |
234 |
#if CORO_USE_VALGRIND |
235 |
int valgrind_id; |
236 |
#endif |
237 |
unsigned char flags; |
238 |
} coro_cctx; |
239 |
|
240 |
enum { |
241 |
CF_RUNNING = 0x0001, /* coroutine is running */ |
242 |
CF_READY = 0x0002, /* coroutine is ready */ |
243 |
CF_NEW = 0x0004, /* has never been switched to */ |
244 |
CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
245 |
}; |
246 |
|
247 |
/* the structure where most of the perl state is stored, overlaid on the cxstack */ |
248 |
typedef struct { |
249 |
SV *defsv; |
250 |
AV *defav; |
251 |
SV *errsv; |
252 |
SV *irsgv; |
253 |
#define VAR(name,type) type name; |
254 |
# include "state.h" |
255 |
#undef VAR |
256 |
} perl_slots; |
257 |
|
258 |
#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
259 |
|
260 |
/* this is a structure representing a perl-level coroutine */ |
261 |
struct coro { |
262 |
/* the c coroutine allocated to this perl coroutine, if any */ |
263 |
coro_cctx *cctx; |
264 |
|
265 |
/* process data */ |
266 |
AV *mainstack; |
267 |
perl_slots *slot; /* basically the saved sp */ |
268 |
|
269 |
AV *args; /* data associated with this coroutine (initial args) */ |
270 |
int refcnt; /* coroutines are refcounted, yes */ |
271 |
int flags; /* CF_ flags */ |
272 |
HV *hv; /* the perl hash associated with this coro, if any */ |
273 |
|
274 |
/* statistics */ |
275 |
int usecount; /* number of transfers to this coro */ |
276 |
|
277 |
/* coro process data */ |
278 |
int prio; |
279 |
SV *throw; /* exception to be thrown */ |
280 |
|
281 |
/* async_pool */ |
282 |
SV *saved_deffh; |
283 |
|
284 |
/* linked list */ |
285 |
struct coro *next, *prev; |
286 |
}; |
287 |
|
288 |
typedef struct coro *Coro__State; |
289 |
typedef struct coro *Coro__State_or_hashref; |
290 |
|
291 |
/** Coro ********************************************************************/ |
292 |
|
293 |
#define PRIO_MAX 3 |
294 |
#define PRIO_HIGH 1 |
295 |
#define PRIO_NORMAL 0 |
296 |
#define PRIO_LOW -1 |
297 |
#define PRIO_IDLE -3 |
298 |
#define PRIO_MIN -4 |
299 |
|
300 |
/* for Coro.pm */ |
301 |
static SV *coro_current; |
302 |
static SV *coro_readyhook; |
303 |
static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; |
304 |
static struct coro *coro_first; |
305 |
#define coro_nready coroapi.nready |
306 |
|
307 |
/** lowlevel stuff **********************************************************/ |
308 |
|
309 |
static SV * |
310 |
coro_get_sv (pTHX_ const char *name, int create) |
311 |
{ |
312 |
#if PERL_VERSION_ATLEAST (5,10,0) |
313 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
314 |
get_sv (name, create); |
315 |
#endif |
316 |
return get_sv (name, create); |
317 |
} |
318 |
|
319 |
static AV * |
320 |
coro_get_av (pTHX_ const char *name, int create) |
321 |
{ |
322 |
#if PERL_VERSION_ATLEAST (5,10,0) |
323 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
324 |
get_av (name, create); |
325 |
#endif |
326 |
return get_av (name, create); |
327 |
} |
328 |
|
329 |
static HV * |
330 |
coro_get_hv (pTHX_ const char *name, int create) |
331 |
{ |
332 |
#if PERL_VERSION_ATLEAST (5,10,0) |
333 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
334 |
get_hv (name, create); |
335 |
#endif |
336 |
return get_hv (name, create); |
337 |
} |
338 |
|
339 |
static AV * |
340 |
coro_clone_padlist (pTHX_ CV *cv) |
341 |
{ |
342 |
AV *padlist = CvPADLIST (cv); |
343 |
AV *newpadlist, *newpad; |
344 |
|
345 |
newpadlist = newAV (); |
346 |
AvREAL_off (newpadlist); |
347 |
#if PERL_VERSION_ATLEAST (5,10,0) |
348 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
349 |
#else |
350 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
351 |
#endif |
352 |
newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
353 |
--AvFILLp (padlist); |
354 |
|
355 |
av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); |
356 |
av_store (newpadlist, 1, (SV *)newpad); |
357 |
|
358 |
return newpadlist; |
359 |
} |
360 |
|
361 |
static void |
362 |
free_padlist (pTHX_ AV *padlist) |
363 |
{ |
364 |
/* may be during global destruction */ |
365 |
if (SvREFCNT (padlist)) |
366 |
{ |
367 |
I32 i = AvFILLp (padlist); |
368 |
while (i >= 0) |
369 |
{ |
370 |
SV **svp = av_fetch (padlist, i--, FALSE); |
371 |
if (svp) |
372 |
{ |
373 |
SV *sv; |
374 |
while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
375 |
SvREFCNT_dec (sv); |
376 |
|
377 |
SvREFCNT_dec (*svp); |
378 |
} |
379 |
} |
380 |
|
381 |
SvREFCNT_dec ((SV*)padlist); |
382 |
} |
383 |
} |
384 |
|
385 |
static int |
386 |
coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
387 |
{ |
388 |
AV *padlist; |
389 |
AV *av = (AV *)mg->mg_obj; |
390 |
|
391 |
/* casting is fun. */ |
392 |
while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
393 |
free_padlist (aTHX_ padlist); |
394 |
|
395 |
SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
396 |
|
397 |
return 0; |
398 |
} |
399 |
|
400 |
#define CORO_MAGIC_type_cv PERL_MAGIC_ext |
401 |
#define CORO_MAGIC_type_state PERL_MAGIC_ext |
402 |
|
403 |
static MGVTBL coro_cv_vtbl = { |
404 |
0, 0, 0, 0, |
405 |
coro_cv_free |
406 |
}; |
407 |
|
408 |
#define CORO_MAGIC(sv, type) \ |
409 |
SvMAGIC (sv) \ |
410 |
? SvMAGIC (sv)->mg_type == type \ |
411 |
? SvMAGIC (sv) \ |
412 |
: mg_find (sv, type) \ |
413 |
: 0 |
414 |
|
415 |
#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
416 |
#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) |
417 |
|
418 |
INLINE struct coro * |
419 |
SvSTATE_ (pTHX_ SV *coro) |
420 |
{ |
421 |
HV *stash; |
422 |
MAGIC *mg; |
423 |
|
424 |
if (SvROK (coro)) |
425 |
coro = SvRV (coro); |
426 |
|
427 |
if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
428 |
croak ("Coro::State object required"); |
429 |
|
430 |
stash = SvSTASH (coro); |
431 |
if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
432 |
{ |
433 |
/* very slow, but rare, check */ |
434 |
if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
435 |
croak ("Coro::State object required"); |
436 |
} |
437 |
|
438 |
mg = CORO_MAGIC_state (coro); |
439 |
return (struct coro *)mg->mg_ptr; |
440 |
} |
441 |
|
442 |
#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
443 |
|
444 |
/* the next two functions merely cache the padlists */ |
445 |
static void |
446 |
get_padlist (pTHX_ CV *cv) |
447 |
{ |
448 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
449 |
AV *av; |
450 |
|
451 |
if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
452 |
CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
453 |
else |
454 |
{ |
455 |
#if CORO_PREFER_PERL_FUNCTIONS |
456 |
/* this is probably cleaner? but also slower! */ |
457 |
/* in practise, it seems to be less stable */ |
458 |
CV *cp = Perl_cv_clone (cv); |
459 |
CvPADLIST (cv) = CvPADLIST (cp); |
460 |
CvPADLIST (cp) = 0; |
461 |
SvREFCNT_dec (cp); |
462 |
#else |
463 |
CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
464 |
#endif |
465 |
} |
466 |
} |
467 |
|
468 |
static void |
469 |
put_padlist (pTHX_ CV *cv) |
470 |
{ |
471 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
472 |
AV *av; |
473 |
|
474 |
if (expect_false (!mg)) |
475 |
mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
476 |
|
477 |
av = (AV *)mg->mg_obj; |
478 |
|
479 |
if (expect_false (AvFILLp (av) >= AvMAX (av))) |
480 |
av_extend (av, AvMAX (av) + 1); |
481 |
|
482 |
AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
483 |
} |
484 |
|
485 |
/** load & save, init *******************************************************/ |
486 |
|
487 |
static void |
488 |
load_perl (pTHX_ Coro__State c) |
489 |
{ |
490 |
perl_slots *slot = c->slot; |
491 |
c->slot = 0; |
492 |
|
493 |
PL_mainstack = c->mainstack; |
494 |
|
495 |
GvSV (PL_defgv) = slot->defsv; |
496 |
GvAV (PL_defgv) = slot->defav; |
497 |
GvSV (PL_errgv) = slot->errsv; |
498 |
GvSV (irsgv) = slot->irsgv; |
499 |
|
500 |
#define VAR(name,type) PL_ ## name = slot->name; |
501 |
# include "state.h" |
502 |
#undef VAR |
503 |
|
504 |
{ |
505 |
dSP; |
506 |
|
507 |
CV *cv; |
508 |
|
509 |
/* now do the ugly restore mess */ |
510 |
while (expect_true (cv = (CV *)POPs)) |
511 |
{ |
512 |
put_padlist (aTHX_ cv); /* mark this padlist as available */ |
513 |
CvDEPTH (cv) = PTR2IV (POPs); |
514 |
CvPADLIST (cv) = (AV *)POPs; |
515 |
} |
516 |
|
517 |
PUTBACK; |
518 |
} |
519 |
} |
520 |
|
521 |
static void |
522 |
save_perl (pTHX_ Coro__State c) |
523 |
{ |
524 |
{ |
525 |
dSP; |
526 |
I32 cxix = cxstack_ix; |
527 |
PERL_CONTEXT *ccstk = cxstack; |
528 |
PERL_SI *top_si = PL_curstackinfo; |
529 |
|
530 |
/* |
531 |
* the worst thing you can imagine happens first - we have to save |
532 |
* (and reinitialize) all cv's in the whole callchain :( |
533 |
*/ |
534 |
|
535 |
XPUSHs (Nullsv); |
536 |
/* this loop was inspired by pp_caller */ |
537 |
for (;;) |
538 |
{ |
539 |
while (expect_true (cxix >= 0)) |
540 |
{ |
541 |
PERL_CONTEXT *cx = &ccstk[cxix--]; |
542 |
|
543 |
if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) |
544 |
{ |
545 |
CV *cv = cx->blk_sub.cv; |
546 |
|
547 |
if (expect_true (CvDEPTH (cv))) |
548 |
{ |
549 |
EXTEND (SP, 3); |
550 |
PUSHs ((SV *)CvPADLIST (cv)); |
551 |
PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
552 |
PUSHs ((SV *)cv); |
553 |
|
554 |
CvDEPTH (cv) = 0; |
555 |
get_padlist (aTHX_ cv); |
556 |
} |
557 |
} |
558 |
} |
559 |
|
560 |
if (expect_true (top_si->si_type == PERLSI_MAIN)) |
561 |
break; |
562 |
|
563 |
top_si = top_si->si_prev; |
564 |
ccstk = top_si->si_cxstack; |
565 |
cxix = top_si->si_cxix; |
566 |
} |
567 |
|
568 |
PUTBACK; |
569 |
} |
570 |
|
571 |
/* allocate some space on the context stack for our purposes */ |
572 |
/* we manually unroll here, as usually 2 slots is enough */ |
573 |
if (SLOT_COUNT >= 1) CXINC; |
574 |
if (SLOT_COUNT >= 2) CXINC; |
575 |
if (SLOT_COUNT >= 3) CXINC; |
576 |
{ |
577 |
int i; |
578 |
for (i = 3; i < SLOT_COUNT; ++i) |
579 |
CXINC; |
580 |
} |
581 |
cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
582 |
|
583 |
c->mainstack = PL_mainstack; |
584 |
|
585 |
{ |
586 |
perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
587 |
|
588 |
slot->defav = GvAV (PL_defgv); |
589 |
slot->defsv = DEFSV; |
590 |
slot->errsv = ERRSV; |
591 |
slot->irsgv = GvSV (irsgv); |
592 |
|
593 |
#define VAR(name,type) slot->name = PL_ ## name; |
594 |
# include "state.h" |
595 |
#undef VAR |
596 |
} |
597 |
} |
598 |
|
599 |
/* |
600 |
* allocate various perl stacks. This is an exact copy |
601 |
* of perl.c:init_stacks, except that it uses less memory |
602 |
* on the (sometimes correct) assumption that coroutines do |
603 |
* not usually need a lot of stackspace. |
604 |
*/ |
605 |
#if CORO_PREFER_PERL_FUNCTIONS |
606 |
# define coro_init_stacks init_stacks |
607 |
#else |
608 |
static void |
609 |
coro_init_stacks (pTHX) |
610 |
{ |
611 |
PL_curstackinfo = new_stackinfo(32, 8); |
612 |
PL_curstackinfo->si_type = PERLSI_MAIN; |
613 |
PL_curstack = PL_curstackinfo->si_stack; |
614 |
PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
615 |
|
616 |
PL_stack_base = AvARRAY(PL_curstack); |
617 |
PL_stack_sp = PL_stack_base; |
618 |
PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
619 |
|
620 |
New(50,PL_tmps_stack,32,SV*); |
621 |
PL_tmps_floor = -1; |
622 |
PL_tmps_ix = -1; |
623 |
PL_tmps_max = 32; |
624 |
|
625 |
New(54,PL_markstack,16,I32); |
626 |
PL_markstack_ptr = PL_markstack; |
627 |
PL_markstack_max = PL_markstack + 16; |
628 |
|
629 |
#ifdef SET_MARK_OFFSET |
630 |
SET_MARK_OFFSET; |
631 |
#endif |
632 |
|
633 |
New(54,PL_scopestack,8,I32); |
634 |
PL_scopestack_ix = 0; |
635 |
PL_scopestack_max = 8; |
636 |
|
637 |
New(54,PL_savestack,24,ANY); |
638 |
PL_savestack_ix = 0; |
639 |
PL_savestack_max = 24; |
640 |
|
641 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
642 |
New(54,PL_retstack,4,OP*); |
643 |
PL_retstack_ix = 0; |
644 |
PL_retstack_max = 4; |
645 |
#endif |
646 |
} |
647 |
#endif |
648 |
|
649 |
/* |
650 |
* destroy the stacks, the callchain etc... |
651 |
*/ |
652 |
static void |
653 |
coro_destruct_stacks (pTHX) |
654 |
{ |
655 |
while (PL_curstackinfo->si_next) |
656 |
PL_curstackinfo = PL_curstackinfo->si_next; |
657 |
|
658 |
while (PL_curstackinfo) |
659 |
{ |
660 |
PERL_SI *p = PL_curstackinfo->si_prev; |
661 |
|
662 |
if (!IN_DESTRUCT) |
663 |
SvREFCNT_dec (PL_curstackinfo->si_stack); |
664 |
|
665 |
Safefree (PL_curstackinfo->si_cxstack); |
666 |
Safefree (PL_curstackinfo); |
667 |
PL_curstackinfo = p; |
668 |
} |
669 |
|
670 |
Safefree (PL_tmps_stack); |
671 |
Safefree (PL_markstack); |
672 |
Safefree (PL_scopestack); |
673 |
Safefree (PL_savestack); |
674 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
675 |
Safefree (PL_retstack); |
676 |
#endif |
677 |
} |
678 |
|
679 |
static size_t |
680 |
coro_rss (pTHX_ struct coro *coro) |
681 |
{ |
682 |
size_t rss = sizeof (*coro); |
683 |
|
684 |
if (coro->mainstack) |
685 |
{ |
686 |
perl_slots tmp_slot; |
687 |
perl_slots *slot; |
688 |
|
689 |
if (coro->flags & CF_RUNNING) |
690 |
{ |
691 |
slot = &tmp_slot; |
692 |
|
693 |
#define VAR(name,type) slot->name = PL_ ## name; |
694 |
# include "state.h" |
695 |
#undef VAR |
696 |
} |
697 |
else |
698 |
slot = coro->slot; |
699 |
|
700 |
if (slot) |
701 |
{ |
702 |
rss += sizeof (slot->curstackinfo); |
703 |
rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); |
704 |
rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); |
705 |
rss += slot->tmps_max * sizeof (SV *); |
706 |
rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); |
707 |
rss += slot->scopestack_max * sizeof (I32); |
708 |
rss += slot->savestack_max * sizeof (ANY); |
709 |
|
710 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
711 |
rss += slot->retstack_max * sizeof (OP *); |
712 |
#endif |
713 |
} |
714 |
} |
715 |
|
716 |
return rss; |
717 |
} |
718 |
|
719 |
/** set stacklevel support **************************************************/ |
720 |
|
721 |
/* we sometimes need to create the effect of pp_slf calling us */ |
722 |
#define SLF_HEAD (void)0 |
723 |
/* we sometimes need to create the effect of leaving via pp_slf */ |
724 |
#define SLF_TAIL slf_tail (aTHX) |
725 |
|
726 |
INLINE void |
727 |
slf_tail (pTHX) |
728 |
{ |
729 |
dSP; |
730 |
SV **bot = SP; |
731 |
|
732 |
int gimme = GIMME_V; |
733 |
|
734 |
/* make sure we put something on the stack in scalar context */ |
735 |
if (gimme == G_SCALAR) |
736 |
{ |
737 |
if (sp == bot) |
738 |
XPUSHs (&PL_sv_undef); |
739 |
|
740 |
SP = bot + 1; |
741 |
} |
742 |
|
743 |
PUTBACK; |
744 |
} |
745 |
|
746 |
/** coroutine stack handling ************************************************/ |
747 |
|
748 |
static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
749 |
static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
750 |
static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
751 |
|
752 |
/* apparently < 5.8.8 */ |
753 |
#ifndef MgPV_nolen_const |
754 |
#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
755 |
SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
756 |
(const char*)(mg)->mg_ptr) |
757 |
#endif |
758 |
|
759 |
/* |
760 |
* This overrides the default magic get method of %SIG elements. |
761 |
* The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
762 |
* and instead of tryign to save and restore the hash elements, we just provide |
763 |
* readback here. |
764 |
* We only do this when the hook is != 0, as they are often set to 0 temporarily, |
765 |
* not expecting this to actually change the hook. This is a potential problem |
766 |
* when a schedule happens then, but we ignore this. |
767 |
*/ |
768 |
static int |
769 |
coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
770 |
{ |
771 |
const char *s = MgPV_nolen_const (mg); |
772 |
|
773 |
if (*s == '_') |
774 |
{ |
775 |
SV **svp = 0; |
776 |
|
777 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
778 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
779 |
|
780 |
if (svp) |
781 |
{ |
782 |
sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
783 |
return 0; |
784 |
} |
785 |
} |
786 |
|
787 |
return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
788 |
} |
789 |
|
790 |
static int |
791 |
coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
792 |
{ |
793 |
const char *s = MgPV_nolen_const (mg); |
794 |
|
795 |
if (*s == '_') |
796 |
{ |
797 |
SV **svp = 0; |
798 |
|
799 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
800 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
801 |
|
802 |
if (svp) |
803 |
{ |
804 |
SV *old = *svp; |
805 |
*svp = 0; |
806 |
SvREFCNT_dec (old); |
807 |
return 0; |
808 |
} |
809 |
} |
810 |
|
811 |
return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
812 |
} |
813 |
|
814 |
static int |
815 |
coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
816 |
{ |
817 |
const char *s = MgPV_nolen_const (mg); |
818 |
|
819 |
if (*s == '_') |
820 |
{ |
821 |
SV **svp = 0; |
822 |
|
823 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
824 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
825 |
|
826 |
if (svp) |
827 |
{ |
828 |
SV *old = *svp; |
829 |
*svp = newSVsv (sv); |
830 |
SvREFCNT_dec (old); |
831 |
return 0; |
832 |
} |
833 |
} |
834 |
|
835 |
return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
836 |
} |
837 |
|
838 |
static void |
839 |
coro_setup (pTHX_ struct coro *coro) |
840 |
{ |
841 |
/* |
842 |
* emulate part of the perl startup here. |
843 |
*/ |
844 |
coro_init_stacks (aTHX); |
845 |
|
846 |
PL_runops = RUNOPS_DEFAULT; |
847 |
PL_curcop = &PL_compiling; |
848 |
PL_in_eval = EVAL_NULL; |
849 |
PL_comppad = 0; |
850 |
PL_curpm = 0; |
851 |
PL_curpad = 0; |
852 |
PL_localizing = 0; |
853 |
PL_dirty = 0; |
854 |
PL_restartop = 0; |
855 |
#if PERL_VERSION_ATLEAST (5,10,0) |
856 |
PL_parser = 0; |
857 |
#endif |
858 |
|
859 |
/* recreate the die/warn hooks */ |
860 |
PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
861 |
PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
862 |
|
863 |
GvSV (PL_defgv) = newSV (0); |
864 |
GvAV (PL_defgv) = coro->args; coro->args = 0; |
865 |
GvSV (PL_errgv) = newSV (0); |
866 |
GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
867 |
PL_rs = newSVsv (GvSV (irsgv)); |
868 |
PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
869 |
|
870 |
{ |
871 |
dSP; |
872 |
UNOP myop; |
873 |
|
874 |
Zero (&myop, 1, UNOP); |
875 |
myop.op_next = Nullop; |
876 |
myop.op_flags = OPf_WANT_VOID; |
877 |
|
878 |
PUSHMARK (SP); |
879 |
XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
880 |
PUTBACK; |
881 |
PL_op = (OP *)&myop; |
882 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
883 |
SPAGAIN; |
884 |
} |
885 |
|
886 |
/* this newly created coroutine might be run on an existing cctx which most |
887 |
* likely was suspended in set_stacklevel, called from pp_set_stacklevel, |
888 |
* so we have to emulate entering pp_set_stacklevel here. |
889 |
*/ |
890 |
SLF_HEAD; |
891 |
} |
892 |
|
893 |
static void |
894 |
coro_destruct (pTHX_ struct coro *coro) |
895 |
{ |
896 |
if (!IN_DESTRUCT) |
897 |
{ |
898 |
/* restore all saved variables and stuff */ |
899 |
LEAVE_SCOPE (0); |
900 |
assert (PL_tmps_floor == -1); |
901 |
|
902 |
/* free all temporaries */ |
903 |
FREETMPS; |
904 |
assert (PL_tmps_ix == -1); |
905 |
|
906 |
/* unwind all extra stacks */ |
907 |
POPSTACK_TO (PL_mainstack); |
908 |
|
909 |
/* unwind main stack */ |
910 |
dounwind (-1); |
911 |
} |
912 |
|
913 |
SvREFCNT_dec (GvSV (PL_defgv)); |
914 |
SvREFCNT_dec (GvAV (PL_defgv)); |
915 |
SvREFCNT_dec (GvSV (PL_errgv)); |
916 |
SvREFCNT_dec (PL_defoutgv); |
917 |
SvREFCNT_dec (PL_rs); |
918 |
SvREFCNT_dec (GvSV (irsgv)); |
919 |
|
920 |
SvREFCNT_dec (PL_diehook); |
921 |
SvREFCNT_dec (PL_warnhook); |
922 |
|
923 |
SvREFCNT_dec (coro->saved_deffh); |
924 |
SvREFCNT_dec (coro->throw); |
925 |
|
926 |
coro_destruct_stacks (aTHX); |
927 |
} |
928 |
|
929 |
INLINE void |
930 |
free_coro_mortal (pTHX) |
931 |
{ |
932 |
if (expect_true (coro_mortal)) |
933 |
{ |
934 |
SvREFCNT_dec (coro_mortal); |
935 |
coro_mortal = 0; |
936 |
} |
937 |
} |
938 |
|
939 |
static int |
940 |
runops_trace (pTHX) |
941 |
{ |
942 |
COP *oldcop = 0; |
943 |
int oldcxix = -2; |
944 |
struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ |
945 |
coro_cctx *cctx = coro->cctx; |
946 |
|
947 |
while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
948 |
{ |
949 |
PERL_ASYNC_CHECK (); |
950 |
|
951 |
if (cctx->flags & CC_TRACE_ALL) |
952 |
{ |
953 |
if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) |
954 |
{ |
955 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
956 |
SV **bot, **top; |
957 |
AV *av = newAV (); /* return values */ |
958 |
SV **cb; |
959 |
dSP; |
960 |
|
961 |
GV *gv = CvGV (cx->blk_sub.cv); |
962 |
SV *fullname = sv_2mortal (newSV (0)); |
963 |
if (isGV (gv)) |
964 |
gv_efullname3 (fullname, gv, 0); |
965 |
|
966 |
bot = PL_stack_base + cx->blk_oldsp + 1; |
967 |
top = cx->blk_gimme == G_ARRAY ? SP + 1 |
968 |
: cx->blk_gimme == G_SCALAR ? bot + 1 |
969 |
: bot; |
970 |
|
971 |
av_extend (av, top - bot); |
972 |
while (bot < top) |
973 |
av_push (av, SvREFCNT_inc_NN (*bot++)); |
974 |
|
975 |
PL_runops = RUNOPS_DEFAULT; |
976 |
ENTER; |
977 |
SAVETMPS; |
978 |
EXTEND (SP, 3); |
979 |
PUSHMARK (SP); |
980 |
PUSHs (&PL_sv_no); |
981 |
PUSHs (fullname); |
982 |
PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
983 |
PUTBACK; |
984 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
985 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
986 |
SPAGAIN; |
987 |
FREETMPS; |
988 |
LEAVE; |
989 |
PL_runops = runops_trace; |
990 |
} |
991 |
|
992 |
if (oldcop != PL_curcop) |
993 |
{ |
994 |
oldcop = PL_curcop; |
995 |
|
996 |
if (PL_curcop != &PL_compiling) |
997 |
{ |
998 |
SV **cb; |
999 |
|
1000 |
if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) |
1001 |
{ |
1002 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
1003 |
|
1004 |
if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
1005 |
{ |
1006 |
runops_proc_t old_runops = PL_runops; |
1007 |
dSP; |
1008 |
GV *gv = CvGV (cx->blk_sub.cv); |
1009 |
SV *fullname = sv_2mortal (newSV (0)); |
1010 |
|
1011 |
if (isGV (gv)) |
1012 |
gv_efullname3 (fullname, gv, 0); |
1013 |
|
1014 |
PL_runops = RUNOPS_DEFAULT; |
1015 |
ENTER; |
1016 |
SAVETMPS; |
1017 |
EXTEND (SP, 3); |
1018 |
PUSHMARK (SP); |
1019 |
PUSHs (&PL_sv_yes); |
1020 |
PUSHs (fullname); |
1021 |
PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
1022 |
PUTBACK; |
1023 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
1024 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1025 |
SPAGAIN; |
1026 |
FREETMPS; |
1027 |
LEAVE; |
1028 |
PL_runops = runops_trace; |
1029 |
} |
1030 |
|
1031 |
oldcxix = cxstack_ix; |
1032 |
} |
1033 |
|
1034 |
if (cctx->flags & CC_TRACE_LINE) |
1035 |
{ |
1036 |
dSP; |
1037 |
|
1038 |
PL_runops = RUNOPS_DEFAULT; |
1039 |
ENTER; |
1040 |
SAVETMPS; |
1041 |
EXTEND (SP, 3); |
1042 |
PL_runops = RUNOPS_DEFAULT; |
1043 |
PUSHMARK (SP); |
1044 |
PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
1045 |
PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
1046 |
PUTBACK; |
1047 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
1048 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1049 |
SPAGAIN; |
1050 |
FREETMPS; |
1051 |
LEAVE; |
1052 |
PL_runops = runops_trace; |
1053 |
} |
1054 |
} |
1055 |
} |
1056 |
} |
1057 |
} |
1058 |
|
1059 |
TAINT_NOT; |
1060 |
return 0; |
1061 |
} |
1062 |
|
1063 |
static void |
1064 |
prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) |
1065 |
{ |
1066 |
ta->prev = (struct coro *)cctx; |
1067 |
ta->next = 0; |
1068 |
} |
1069 |
|
1070 |
/* inject a fake call to Coro::State::_cctx_init into the execution */ |
1071 |
/* _cctx_init should be careful, as it could be called at almost any time */ |
1072 |
/* during execution of a perl program */ |
1073 |
/* also initialises PL_top_env */ |
1074 |
static void NOINLINE |
1075 |
cctx_prepare (pTHX_ coro_cctx *cctx) |
1076 |
{ |
1077 |
dSP; |
1078 |
UNOP myop; |
1079 |
|
1080 |
PL_top_env = &PL_start_env; |
1081 |
|
1082 |
if (cctx->flags & CC_TRACE) |
1083 |
PL_runops = runops_trace; |
1084 |
|
1085 |
Zero (&myop, 1, UNOP); |
1086 |
myop.op_next = PL_op; |
1087 |
myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
1088 |
|
1089 |
PUSHMARK (SP); |
1090 |
EXTEND (SP, 2); |
1091 |
PUSHs (sv_2mortal (newSViv ((IV)cctx))); |
1092 |
PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
1093 |
PUTBACK; |
1094 |
PL_op = (OP *)&myop; |
1095 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
1096 |
SPAGAIN; |
1097 |
} |
1098 |
|
1099 |
/* the tail of transfer: execute stuff we can only do after a transfer */ |
1100 |
INLINE void |
1101 |
transfer_tail (pTHX) |
1102 |
{ |
1103 |
struct coro *next = (struct coro *)transfer_next; |
1104 |
assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */ |
1105 |
assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next)); |
1106 |
|
1107 |
free_coro_mortal (aTHX); |
1108 |
UNLOCK; |
1109 |
|
1110 |
if (expect_false (next->throw)) |
1111 |
{ |
1112 |
SV *exception = sv_2mortal (next->throw); |
1113 |
|
1114 |
next->throw = 0; |
1115 |
sv_setsv (ERRSV, exception); |
1116 |
croak (0); |
1117 |
} |
1118 |
} |
1119 |
|
1120 |
/* |
1121 |
* this is a _very_ stripped down perl interpreter ;) |
1122 |
*/ |
1123 |
static void |
1124 |
cctx_run (void *arg) |
1125 |
{ |
1126 |
#ifdef USE_ITHREADS |
1127 |
# if CORO_PTHREAD |
1128 |
PERL_SET_CONTEXT (coro_thx); |
1129 |
# endif |
1130 |
#endif |
1131 |
{ |
1132 |
dTHX; |
1133 |
|
1134 |
/* we are the alternative tail to pp_set_stacklevel */ |
1135 |
/* so do the same things here */ |
1136 |
SLF_TAIL; |
1137 |
|
1138 |
/* we now skip the op that did lead to transfer() */ |
1139 |
PL_op = PL_op->op_next; |
1140 |
|
1141 |
/* inject a fake subroutine call to cctx_init */ |
1142 |
cctx_prepare (aTHX_ (coro_cctx *)arg); |
1143 |
|
1144 |
/* cctx_run is the alternative tail of transfer() */ |
1145 |
transfer_tail (aTHX); |
1146 |
|
1147 |
/* somebody or something will hit me for both perl_run and PL_restartop */ |
1148 |
PL_restartop = PL_op; |
1149 |
perl_run (PL_curinterp); |
1150 |
|
1151 |
/* |
1152 |
* If perl-run returns we assume exit() was being called or the coro |
1153 |
* fell off the end, which seems to be the only valid (non-bug) |
1154 |
* reason for perl_run to return. We try to exit by jumping to the |
1155 |
* bootstrap-time "top" top_env, as we cannot restore the "main" |
1156 |
* coroutine as Coro has no such concept |
1157 |
*/ |
1158 |
PL_top_env = main_top_env; |
1159 |
JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
1160 |
} |
1161 |
} |
1162 |
|
1163 |
static coro_cctx * |
1164 |
cctx_new () |
1165 |
{ |
1166 |
coro_cctx *cctx; |
1167 |
|
1168 |
++cctx_count; |
1169 |
New (0, cctx, 1, coro_cctx); |
1170 |
|
1171 |
cctx->gen = cctx_gen; |
1172 |
cctx->flags = 0; |
1173 |
cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
1174 |
|
1175 |
return cctx; |
1176 |
} |
1177 |
|
1178 |
/* create a new cctx only suitable as source */ |
1179 |
static coro_cctx * |
1180 |
cctx_new_empty () |
1181 |
{ |
1182 |
coro_cctx *cctx = cctx_new (); |
1183 |
|
1184 |
cctx->sptr = 0; |
1185 |
coro_create (&cctx->cctx, 0, 0, 0, 0); |
1186 |
|
1187 |
return cctx; |
1188 |
} |
1189 |
|
1190 |
/* create a new cctx suitable as destination/running a perl interpreter */ |
1191 |
static coro_cctx * |
1192 |
cctx_new_run () |
1193 |
{ |
1194 |
coro_cctx *cctx = cctx_new (); |
1195 |
void *stack_start; |
1196 |
size_t stack_size; |
1197 |
|
1198 |
#if HAVE_MMAP |
1199 |
cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
1200 |
/* mmap supposedly does allocate-on-write for us */ |
1201 |
cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
1202 |
|
1203 |
if (cctx->sptr != (void *)-1) |
1204 |
{ |
1205 |
#if CORO_STACKGUARD |
1206 |
mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
1207 |
#endif |
1208 |
stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
1209 |
stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
1210 |
cctx->flags |= CC_MAPPED; |
1211 |
} |
1212 |
else |
1213 |
#endif |
1214 |
{ |
1215 |
cctx->ssize = cctx_stacksize * (long)sizeof (long); |
1216 |
New (0, cctx->sptr, cctx_stacksize, long); |
1217 |
|
1218 |
if (!cctx->sptr) |
1219 |
{ |
1220 |
perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
1221 |
_exit (EXIT_FAILURE); |
1222 |
} |
1223 |
|
1224 |
stack_start = cctx->sptr; |
1225 |
stack_size = cctx->ssize; |
1226 |
} |
1227 |
|
1228 |
#if CORO_USE_VALGRIND |
1229 |
cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
1230 |
#endif |
1231 |
|
1232 |
coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
1233 |
|
1234 |
return cctx; |
1235 |
} |
1236 |
|
1237 |
static void |
1238 |
cctx_destroy (coro_cctx *cctx) |
1239 |
{ |
1240 |
if (!cctx) |
1241 |
return; |
1242 |
|
1243 |
--cctx_count; |
1244 |
coro_destroy (&cctx->cctx); |
1245 |
|
1246 |
/* coro_transfer creates new, empty cctx's */ |
1247 |
if (cctx->sptr) |
1248 |
{ |
1249 |
#if CORO_USE_VALGRIND |
1250 |
VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
1251 |
#endif |
1252 |
|
1253 |
#if HAVE_MMAP |
1254 |
if (cctx->flags & CC_MAPPED) |
1255 |
munmap (cctx->sptr, cctx->ssize); |
1256 |
else |
1257 |
#endif |
1258 |
Safefree (cctx->sptr); |
1259 |
} |
1260 |
|
1261 |
Safefree (cctx); |
1262 |
} |
1263 |
|
1264 |
/* wether this cctx should be destructed */ |
1265 |
#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
1266 |
|
1267 |
static coro_cctx * |
1268 |
cctx_get (pTHX) |
1269 |
{ |
1270 |
while (expect_true (cctx_first)) |
1271 |
{ |
1272 |
coro_cctx *cctx = cctx_first; |
1273 |
cctx_first = cctx->next; |
1274 |
--cctx_idle; |
1275 |
|
1276 |
if (expect_true (!CCTX_EXPIRED (cctx))) |
1277 |
return cctx; |
1278 |
|
1279 |
cctx_destroy (cctx); |
1280 |
} |
1281 |
|
1282 |
return cctx_new_run (); |
1283 |
} |
1284 |
|
1285 |
static void |
1286 |
cctx_put (coro_cctx *cctx) |
1287 |
{ |
1288 |
assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
1289 |
|
1290 |
/* free another cctx if overlimit */ |
1291 |
if (expect_false (cctx_idle >= cctx_max_idle)) |
1292 |
{ |
1293 |
coro_cctx *first = cctx_first; |
1294 |
cctx_first = first->next; |
1295 |
--cctx_idle; |
1296 |
|
1297 |
cctx_destroy (first); |
1298 |
} |
1299 |
|
1300 |
++cctx_idle; |
1301 |
cctx->next = cctx_first; |
1302 |
cctx_first = cctx; |
1303 |
} |
1304 |
|
1305 |
/** coroutine switching *****************************************************/ |
1306 |
|
1307 |
static void |
1308 |
transfer_check (pTHX_ struct coro *prev, struct coro *next) |
1309 |
{ |
1310 |
if (expect_true (prev != next)) |
1311 |
{ |
1312 |
if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
1313 |
croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); |
1314 |
|
1315 |
if (expect_false (next->flags & CF_RUNNING)) |
1316 |
croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
1317 |
|
1318 |
if (expect_false (next->flags & CF_DESTROYED)) |
1319 |
croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
1320 |
|
1321 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
1322 |
if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
1323 |
croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); |
1324 |
#endif |
1325 |
} |
1326 |
} |
1327 |
|
1328 |
/* always use the TRANSFER macro */ |
1329 |
static void NOINLINE |
1330 |
transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
1331 |
{ |
1332 |
dSTACKLEVEL; |
1333 |
|
1334 |
/* sometimes transfer is only called to set idle_sp */ |
1335 |
if (expect_false (!next)) |
1336 |
{ |
1337 |
((coro_cctx *)prev)->idle_sp = stacklevel; |
1338 |
assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1339 |
} |
1340 |
else if (expect_true (prev != next)) |
1341 |
{ |
1342 |
coro_cctx *prev__cctx; |
1343 |
|
1344 |
if (expect_false (prev->flags & CF_NEW)) |
1345 |
{ |
1346 |
/* create a new empty/source context */ |
1347 |
prev->cctx = cctx_new_empty (); |
1348 |
prev->flags &= ~CF_NEW; |
1349 |
prev->flags |= CF_RUNNING; |
1350 |
} |
1351 |
|
1352 |
prev->flags &= ~CF_RUNNING; |
1353 |
next->flags |= CF_RUNNING; |
1354 |
|
1355 |
LOCK; |
1356 |
|
1357 |
/* first get rid of the old state */ |
1358 |
save_perl (aTHX_ prev); |
1359 |
|
1360 |
if (expect_false (next->flags & CF_NEW)) |
1361 |
{ |
1362 |
/* need to start coroutine */ |
1363 |
next->flags &= ~CF_NEW; |
1364 |
/* setup coroutine call */ |
1365 |
coro_setup (aTHX_ next); |
1366 |
} |
1367 |
else |
1368 |
load_perl (aTHX_ next); |
1369 |
|
1370 |
prev__cctx = prev->cctx; |
1371 |
|
1372 |
/* possibly untie and reuse the cctx */ |
1373 |
if (expect_true ( |
1374 |
prev__cctx->idle_sp == stacklevel |
1375 |
&& !(prev__cctx->flags & CC_TRACE) |
1376 |
&& !force_cctx |
1377 |
)) |
1378 |
{ |
1379 |
/* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
1380 |
assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); |
1381 |
|
1382 |
prev->cctx = 0; |
1383 |
|
1384 |
/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
1385 |
/* without this the next cctx_get might destroy the prev__cctx while still in use */ |
1386 |
if (expect_false (CCTX_EXPIRED (prev__cctx))) |
1387 |
if (!next->cctx) |
1388 |
next->cctx = cctx_get (aTHX); |
1389 |
|
1390 |
cctx_put (prev__cctx); |
1391 |
} |
1392 |
|
1393 |
++next->usecount; |
1394 |
|
1395 |
if (expect_true (!next->cctx)) |
1396 |
next->cctx = cctx_get (aTHX); |
1397 |
|
1398 |
assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); |
1399 |
transfer_next = next; |
1400 |
|
1401 |
if (expect_false (prev__cctx != next->cctx)) |
1402 |
{ |
1403 |
prev__cctx->top_env = PL_top_env; |
1404 |
PL_top_env = next->cctx->top_env; |
1405 |
coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
1406 |
} |
1407 |
|
1408 |
transfer_tail (aTHX); |
1409 |
} |
1410 |
} |
1411 |
|
1412 |
#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
1413 |
#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
1414 |
|
1415 |
/** high level stuff ********************************************************/ |
1416 |
|
1417 |
static int |
1418 |
coro_state_destroy (pTHX_ struct coro *coro) |
1419 |
{ |
1420 |
if (coro->flags & CF_DESTROYED) |
1421 |
return 0; |
1422 |
|
1423 |
coro->flags |= CF_DESTROYED; |
1424 |
|
1425 |
if (coro->flags & CF_READY) |
1426 |
{ |
1427 |
/* reduce nready, as destroying a ready coro effectively unreadies it */ |
1428 |
/* alternative: look through all ready queues and remove the coro */ |
1429 |
LOCK; |
1430 |
--coro_nready; |
1431 |
UNLOCK; |
1432 |
} |
1433 |
else |
1434 |
coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
1435 |
|
1436 |
if (coro->mainstack && coro->mainstack != main_mainstack) |
1437 |
{ |
1438 |
struct coro temp; |
1439 |
|
1440 |
if (coro->flags & CF_RUNNING) |
1441 |
croak ("FATAL: tried to destroy currently running coroutine"); |
1442 |
|
1443 |
save_perl (aTHX_ &temp); |
1444 |
load_perl (aTHX_ coro); |
1445 |
|
1446 |
coro_destruct (aTHX_ coro); |
1447 |
|
1448 |
load_perl (aTHX_ &temp); |
1449 |
|
1450 |
coro->slot = 0; |
1451 |
} |
1452 |
|
1453 |
cctx_destroy (coro->cctx); |
1454 |
SvREFCNT_dec (coro->args); |
1455 |
|
1456 |
if (coro->next) coro->next->prev = coro->prev; |
1457 |
if (coro->prev) coro->prev->next = coro->next; |
1458 |
if (coro == coro_first) coro_first = coro->next; |
1459 |
|
1460 |
return 1; |
1461 |
} |
1462 |
|
1463 |
static int |
1464 |
coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
1465 |
{ |
1466 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1467 |
mg->mg_ptr = 0; |
1468 |
|
1469 |
coro->hv = 0; |
1470 |
|
1471 |
if (--coro->refcnt < 0) |
1472 |
{ |
1473 |
coro_state_destroy (aTHX_ coro); |
1474 |
Safefree (coro); |
1475 |
} |
1476 |
|
1477 |
return 0; |
1478 |
} |
1479 |
|
1480 |
static int |
1481 |
coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
1482 |
{ |
1483 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1484 |
|
1485 |
++coro->refcnt; |
1486 |
|
1487 |
return 0; |
1488 |
} |
1489 |
|
1490 |
static MGVTBL coro_state_vtbl = { |
1491 |
0, 0, 0, 0, |
1492 |
coro_state_free, |
1493 |
0, |
1494 |
#ifdef MGf_DUP |
1495 |
coro_state_dup, |
1496 |
#else |
1497 |
# define MGf_DUP 0 |
1498 |
#endif |
1499 |
}; |
1500 |
|
1501 |
static void |
1502 |
prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
1503 |
{ |
1504 |
ta->prev = SvSTATE (prev_sv); |
1505 |
ta->next = SvSTATE (next_sv); |
1506 |
TRANSFER_CHECK (*ta); |
1507 |
} |
1508 |
|
1509 |
static void |
1510 |
api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
1511 |
{ |
1512 |
struct transfer_args ta; |
1513 |
|
1514 |
prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1515 |
TRANSFER (ta, 1); |
1516 |
} |
1517 |
|
1518 |
/** Coro ********************************************************************/ |
1519 |
|
1520 |
static void |
1521 |
coro_enq (pTHX_ SV *coro_sv) |
1522 |
{ |
1523 |
av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
1524 |
} |
1525 |
|
1526 |
static SV * |
1527 |
coro_deq (pTHX) |
1528 |
{ |
1529 |
int prio; |
1530 |
|
1531 |
for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) |
1532 |
if (AvFILLp (coro_ready [prio]) >= 0) |
1533 |
return av_shift (coro_ready [prio]); |
1534 |
|
1535 |
return 0; |
1536 |
} |
1537 |
|
1538 |
static int |
1539 |
api_ready (pTHX_ SV *coro_sv) |
1540 |
{ |
1541 |
struct coro *coro; |
1542 |
SV *sv_hook; |
1543 |
void (*xs_hook)(void); |
1544 |
|
1545 |
if (SvROK (coro_sv)) |
1546 |
coro_sv = SvRV (coro_sv); |
1547 |
|
1548 |
coro = SvSTATE (coro_sv); |
1549 |
|
1550 |
if (coro->flags & CF_READY) |
1551 |
return 0; |
1552 |
|
1553 |
coro->flags |= CF_READY; |
1554 |
|
1555 |
LOCK; |
1556 |
|
1557 |
sv_hook = coro_nready ? 0 : coro_readyhook; |
1558 |
xs_hook = coro_nready ? 0 : coroapi.readyhook; |
1559 |
|
1560 |
coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); |
1561 |
++coro_nready; |
1562 |
|
1563 |
UNLOCK; |
1564 |
|
1565 |
if (sv_hook) |
1566 |
{ |
1567 |
dSP; |
1568 |
|
1569 |
ENTER; |
1570 |
SAVETMPS; |
1571 |
|
1572 |
PUSHMARK (SP); |
1573 |
PUTBACK; |
1574 |
call_sv (sv_hook, G_DISCARD); |
1575 |
SPAGAIN; |
1576 |
|
1577 |
FREETMPS; |
1578 |
LEAVE; |
1579 |
} |
1580 |
|
1581 |
if (xs_hook) |
1582 |
xs_hook (); |
1583 |
|
1584 |
return 1; |
1585 |
} |
1586 |
|
1587 |
static int |
1588 |
api_is_ready (pTHX_ SV *coro_sv) |
1589 |
{ |
1590 |
return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1591 |
} |
1592 |
|
1593 |
INLINE void |
1594 |
prepare_schedule (pTHX_ struct transfer_args *ta) |
1595 |
{ |
1596 |
SV *prev_sv, *next_sv; |
1597 |
|
1598 |
for (;;) |
1599 |
{ |
1600 |
LOCK; |
1601 |
next_sv = coro_deq (aTHX); |
1602 |
|
1603 |
/* nothing to schedule: call the idle handler */ |
1604 |
if (expect_false (!next_sv)) |
1605 |
{ |
1606 |
dSP; |
1607 |
UNLOCK; |
1608 |
|
1609 |
ENTER; |
1610 |
SAVETMPS; |
1611 |
|
1612 |
PUSHMARK (SP); |
1613 |
PUTBACK; |
1614 |
call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
1615 |
SPAGAIN; |
1616 |
|
1617 |
FREETMPS; |
1618 |
LEAVE; |
1619 |
continue; |
1620 |
} |
1621 |
|
1622 |
ta->next = SvSTATE (next_sv); |
1623 |
|
1624 |
/* cannot transfer to destroyed coros, skip and look for next */ |
1625 |
if (expect_false (ta->next->flags & CF_DESTROYED)) |
1626 |
{ |
1627 |
UNLOCK; |
1628 |
SvREFCNT_dec (next_sv); |
1629 |
/* coro_nready has already been taken care of by destroy */ |
1630 |
continue; |
1631 |
} |
1632 |
|
1633 |
--coro_nready; |
1634 |
UNLOCK; |
1635 |
break; |
1636 |
} |
1637 |
|
1638 |
/* free this only after the transfer */ |
1639 |
prev_sv = SvRV (coro_current); |
1640 |
ta->prev = SvSTATE (prev_sv); |
1641 |
TRANSFER_CHECK (*ta); |
1642 |
assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); |
1643 |
ta->next->flags &= ~CF_READY; |
1644 |
SvRV_set (coro_current, next_sv); |
1645 |
|
1646 |
LOCK; |
1647 |
free_coro_mortal (aTHX); |
1648 |
coro_mortal = prev_sv; |
1649 |
UNLOCK; |
1650 |
} |
1651 |
|
1652 |
INLINE void |
1653 |
prepare_cede (pTHX_ struct transfer_args *ta) |
1654 |
{ |
1655 |
api_ready (aTHX_ coro_current); |
1656 |
prepare_schedule (aTHX_ ta); |
1657 |
} |
1658 |
|
1659 |
static void |
1660 |
prepare_cede_notself (pTHX_ struct transfer_args *ta) |
1661 |
{ |
1662 |
SV *prev = SvRV (coro_current); |
1663 |
|
1664 |
if (coro_nready) |
1665 |
{ |
1666 |
prepare_schedule (aTHX_ ta); |
1667 |
api_ready (aTHX_ prev); |
1668 |
} |
1669 |
else |
1670 |
ta->prev = ta->next = SvSTATE (prev); |
1671 |
} |
1672 |
|
1673 |
static void |
1674 |
api_schedule (pTHX) |
1675 |
{ |
1676 |
struct transfer_args ta; |
1677 |
|
1678 |
prepare_schedule (aTHX_ &ta); |
1679 |
TRANSFER (ta, 1); |
1680 |
} |
1681 |
|
1682 |
static int |
1683 |
api_cede (pTHX) |
1684 |
{ |
1685 |
struct transfer_args ta; |
1686 |
|
1687 |
prepare_cede (aTHX_ &ta); |
1688 |
|
1689 |
if (expect_true (ta.prev != ta.next)) |
1690 |
{ |
1691 |
TRANSFER (ta, 1); |
1692 |
return 1; |
1693 |
} |
1694 |
else |
1695 |
return 0; |
1696 |
} |
1697 |
|
1698 |
static int |
1699 |
api_cede_notself (pTHX) |
1700 |
{ |
1701 |
if (coro_nready) |
1702 |
{ |
1703 |
struct transfer_args ta; |
1704 |
|
1705 |
prepare_cede_notself (aTHX_ &ta); |
1706 |
TRANSFER (ta, 1); |
1707 |
return 1; |
1708 |
} |
1709 |
else |
1710 |
return 0; |
1711 |
} |
1712 |
|
1713 |
static void |
1714 |
api_trace (pTHX_ SV *coro_sv, int flags) |
1715 |
{ |
1716 |
struct coro *coro = SvSTATE (coro_sv); |
1717 |
|
1718 |
if (flags & CC_TRACE) |
1719 |
{ |
1720 |
if (!coro->cctx) |
1721 |
coro->cctx = cctx_new_run (); |
1722 |
else if (!(coro->cctx->flags & CC_TRACE)) |
1723 |
croak ("cannot enable tracing on coroutine with custom stack"); |
1724 |
|
1725 |
coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
1726 |
} |
1727 |
else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
1728 |
{ |
1729 |
coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
1730 |
|
1731 |
if (coro->flags & CF_RUNNING) |
1732 |
PL_runops = RUNOPS_DEFAULT; |
1733 |
else |
1734 |
coro->slot->runops = RUNOPS_DEFAULT; |
1735 |
} |
1736 |
} |
1737 |
|
1738 |
#if 0 |
1739 |
static int |
1740 |
coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) |
1741 |
{ |
1742 |
AV *padlist; |
1743 |
AV *av = (AV *)mg->mg_obj; |
1744 |
|
1745 |
abort (); |
1746 |
|
1747 |
return 0; |
1748 |
} |
1749 |
|
1750 |
static MGVTBL coro_gensub_vtbl = { |
1751 |
0, 0, 0, 0, |
1752 |
coro_gensub_free |
1753 |
}; |
1754 |
#endif |
1755 |
|
1756 |
/*****************************************************************************/ |
1757 |
/* PerlIO::cede */ |
1758 |
|
1759 |
typedef struct |
1760 |
{ |
1761 |
PerlIOBuf base; |
1762 |
NV next, every; |
1763 |
} PerlIOCede; |
1764 |
|
1765 |
static IV |
1766 |
PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
1767 |
{ |
1768 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
1769 |
|
1770 |
self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
1771 |
self->next = nvtime () + self->every; |
1772 |
|
1773 |
return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
1774 |
} |
1775 |
|
1776 |
static SV * |
1777 |
PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
1778 |
{ |
1779 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
1780 |
|
1781 |
return newSVnv (self->every); |
1782 |
} |
1783 |
|
1784 |
static IV |
1785 |
PerlIOCede_flush (pTHX_ PerlIO *f) |
1786 |
{ |
1787 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
1788 |
double now = nvtime (); |
1789 |
|
1790 |
if (now >= self->next) |
1791 |
{ |
1792 |
api_cede (aTHX); |
1793 |
self->next = now + self->every; |
1794 |
} |
1795 |
|
1796 |
return PerlIOBuf_flush (aTHX_ f); |
1797 |
} |
1798 |
|
1799 |
static PerlIO_funcs PerlIO_cede = |
1800 |
{ |
1801 |
sizeof(PerlIO_funcs), |
1802 |
"cede", |
1803 |
sizeof(PerlIOCede), |
1804 |
PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
1805 |
PerlIOCede_pushed, |
1806 |
PerlIOBuf_popped, |
1807 |
PerlIOBuf_open, |
1808 |
PerlIOBase_binmode, |
1809 |
PerlIOCede_getarg, |
1810 |
PerlIOBase_fileno, |
1811 |
PerlIOBuf_dup, |
1812 |
PerlIOBuf_read, |
1813 |
PerlIOBuf_unread, |
1814 |
PerlIOBuf_write, |
1815 |
PerlIOBuf_seek, |
1816 |
PerlIOBuf_tell, |
1817 |
PerlIOBuf_close, |
1818 |
PerlIOCede_flush, |
1819 |
PerlIOBuf_fill, |
1820 |
PerlIOBase_eof, |
1821 |
PerlIOBase_error, |
1822 |
PerlIOBase_clearerr, |
1823 |
PerlIOBase_setlinebuf, |
1824 |
PerlIOBuf_get_base, |
1825 |
PerlIOBuf_bufsiz, |
1826 |
PerlIOBuf_get_ptr, |
1827 |
PerlIOBuf_get_cnt, |
1828 |
PerlIOBuf_set_ptrcnt, |
1829 |
}; |
1830 |
|
1831 |
/*****************************************************************************/ |
1832 |
|
1833 |
static const CV *slf_cv; /* for quick consistency check */ |
1834 |
|
1835 |
static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
1836 |
static SV *slf_arg0; |
1837 |
static SV *slf_arg1; |
1838 |
|
1839 |
/* this restores the stack in the case we patched the entersub, to */ |
1840 |
/* recreate the stack frame as perl will on following calls */ |
1841 |
/* since entersub cleared the stack */ |
1842 |
static OP * |
1843 |
pp_restore (pTHX) |
1844 |
{ |
1845 |
dSP; |
1846 |
|
1847 |
PUSHMARK (SP); |
1848 |
|
1849 |
EXTEND (SP, 3); |
1850 |
if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); |
1851 |
if (slf_arg1) PUSHs (sv_2mortal (slf_arg1)); |
1852 |
PUSHs ((SV *)CvGV (slf_cv)); |
1853 |
|
1854 |
RETURNOP (slf_restore.op_first); |
1855 |
} |
1856 |
|
1857 |
#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */ |
1858 |
|
1859 |
enum { |
1860 |
CORO_SLF_CUSTOM = 0, |
1861 |
CORO_SLF_SET_STACKLEVEL = 1, |
1862 |
CORO_SLF_TRANSFER = 2 |
1863 |
}; |
1864 |
|
1865 |
/* declare prototype */ |
1866 |
XS(XS_Coro__State__set_stacklevel); |
1867 |
|
1868 |
/* |
1869 |
* these not obviously related functions are all rolled into one |
1870 |
* function to increase chances that they all will call transfer with the same |
1871 |
* stack offset |
1872 |
* SLF stands for "schedule-like-function". |
1873 |
*/ |
1874 |
static OP * |
1875 |
pp_slf (pTHX) |
1876 |
{ |
1877 |
dSP; |
1878 |
struct transfer_args ta; |
1879 |
SV **arg = PL_stack_base + TOPMARK + 1; |
1880 |
int items = SP - arg; /* args without function object */ |
1881 |
int ix = PL_op->op_private & OPpENTERSUB_SLF; |
1882 |
struct CoroSLF *slf = 0; |
1883 |
|
1884 |
/* do a quick consistency check on the "function" object, and if it isn't */ |
1885 |
/* for us, divert to the real entersub */ |
1886 |
if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel) |
1887 |
return PL_ppaddr[OP_ENTERSUB](aTHX); |
1888 |
|
1889 |
/* pop args */ |
1890 |
SP = PL_stack_base + POPMARK; |
1891 |
|
1892 |
if (!(PL_op->op_flags & OPf_STACKED)) |
1893 |
{ |
1894 |
/* ampersand-form of call, use @_ instead of stack */ |
1895 |
AV *av = GvAV (PL_defgv); |
1896 |
arg = AvARRAY (av); |
1897 |
items = AvFILLp (av) + 1; |
1898 |
} |
1899 |
|
1900 |
PUTBACK; |
1901 |
|
1902 |
if (!ix) |
1903 |
{ |
1904 |
slf = (struct CoroSLF *)CvSTART (GvCV (*sp)); |
1905 |
ix = slf->prepare (aTHX_ arg, items); |
1906 |
} |
1907 |
|
1908 |
switch (ix) |
1909 |
{ |
1910 |
case CORO_SLF_SET_STACKLEVEL: |
1911 |
prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0])); |
1912 |
break; |
1913 |
|
1914 |
case CORO_SLF_TRANSFER: |
1915 |
if (items != 2) |
1916 |
croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items); |
1917 |
|
1918 |
prepare_transfer (aTHX_ &ta, arg [0], arg [1]); |
1919 |
break; |
1920 |
|
1921 |
case CORO_SLF_SCHEDULE: |
1922 |
prepare_schedule (aTHX_ &ta); |
1923 |
break; |
1924 |
|
1925 |
case CORO_SLF_CEDE: |
1926 |
prepare_cede (aTHX_ &ta); |
1927 |
break; |
1928 |
|
1929 |
case CORO_SLF_CEDE_NOTSELF: |
1930 |
prepare_cede_notself (aTHX_ &ta); |
1931 |
break; |
1932 |
|
1933 |
default: |
1934 |
abort (); |
1935 |
} |
1936 |
|
1937 |
do |
1938 |
TRANSFER (ta, 0); |
1939 |
while (slf && slf->check (aTHX)); |
1940 |
|
1941 |
SPAGAIN; |
1942 |
|
1943 |
PUTBACK; |
1944 |
SLF_TAIL; |
1945 |
SPAGAIN; |
1946 |
RETURN; |
1947 |
} |
1948 |
|
1949 |
static void |
1950 |
coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items) |
1951 |
{ |
1952 |
assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); |
1953 |
|
1954 |
assert (("FATAL: SLF call with illegal CV value", CvGV (cv))); |
1955 |
slf_cv = cv; |
1956 |
|
1957 |
/* we patch the op, and then re-run the whole call */ |
1958 |
/* we have to put the same argument on the stack for this to work */ |
1959 |
/* and this will be done by pp_restore */ |
1960 |
slf_restore.op_next = (OP *)&slf_restore; |
1961 |
slf_restore.op_type = OP_NULL; |
1962 |
slf_restore.op_ppaddr = pp_restore; |
1963 |
slf_restore.op_first = PL_op; |
1964 |
|
1965 |
slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0; |
1966 |
slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0; |
1967 |
|
1968 |
PL_op->op_ppaddr = pp_slf; |
1969 |
PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */ |
1970 |
|
1971 |
PL_op = (OP *)&slf_restore; |
1972 |
} |
1973 |
|
1974 |
MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
1975 |
|
1976 |
PROTOTYPES: DISABLE |
1977 |
|
1978 |
BOOT: |
1979 |
{ |
1980 |
#ifdef USE_ITHREADS |
1981 |
MUTEX_INIT (&coro_lock); |
1982 |
# if CORO_PTHREAD |
1983 |
coro_thx = PERL_GET_CONTEXT; |
1984 |
# endif |
1985 |
#endif |
1986 |
BOOT_PAGESIZE; |
1987 |
|
1988 |
irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
1989 |
stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
1990 |
|
1991 |
orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
1992 |
orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
1993 |
orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
1994 |
|
1995 |
hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
1996 |
rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
1997 |
rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
1998 |
|
1999 |
coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
2000 |
|
2001 |
newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
2002 |
newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
2003 |
newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
2004 |
newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
2005 |
|
2006 |
main_mainstack = PL_mainstack; |
2007 |
main_top_env = PL_top_env; |
2008 |
|
2009 |
while (main_top_env->je_prev) |
2010 |
main_top_env = main_top_env->je_prev; |
2011 |
|
2012 |
coroapi.ver = CORO_API_VERSION; |
2013 |
coroapi.rev = CORO_API_REVISION; |
2014 |
coroapi.transfer = api_transfer; |
2015 |
|
2016 |
{ |
2017 |
SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
2018 |
|
2019 |
if (!svp) croak ("Time::HiRes is required"); |
2020 |
if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); |
2021 |
|
2022 |
nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
2023 |
} |
2024 |
|
2025 |
assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
2026 |
} |
2027 |
|
2028 |
SV * |
2029 |
new (char *klass, ...) |
2030 |
CODE: |
2031 |
{ |
2032 |
struct coro *coro; |
2033 |
MAGIC *mg; |
2034 |
HV *hv; |
2035 |
int i; |
2036 |
|
2037 |
Newz (0, coro, 1, struct coro); |
2038 |
coro->args = newAV (); |
2039 |
coro->flags = CF_NEW; |
2040 |
|
2041 |
if (coro_first) coro_first->prev = coro; |
2042 |
coro->next = coro_first; |
2043 |
coro_first = coro; |
2044 |
|
2045 |
coro->hv = hv = newHV (); |
2046 |
mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
2047 |
mg->mg_flags |= MGf_DUP; |
2048 |
RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
2049 |
|
2050 |
av_extend (coro->args, items - 1); |
2051 |
for (i = 1; i < items; i++) |
2052 |
av_push (coro->args, newSVsv (ST (i))); |
2053 |
} |
2054 |
OUTPUT: |
2055 |
RETVAL |
2056 |
|
2057 |
void |
2058 |
_set_stacklevel (...) |
2059 |
ALIAS: |
2060 |
_set_stacklevel = CORO_SLF_SET_STACKLEVEL |
2061 |
Coro::State::transfer = CORO_SLF_TRANSFER |
2062 |
Coro::schedule = CORO_SLF_SCHEDULE |
2063 |
Coro::cede = CORO_SLF_CEDE |
2064 |
Coro::cede_notself = CORO_SLF_CEDE_NOTSELF |
2065 |
CODE: |
2066 |
coro_slf_patch (aTHX_ cv, ix, &ST (0), items); |
2067 |
|
2068 |
bool |
2069 |
_destroy (SV *coro_sv) |
2070 |
CODE: |
2071 |
RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
2072 |
OUTPUT: |
2073 |
RETVAL |
2074 |
|
2075 |
void |
2076 |
_exit (int code) |
2077 |
PROTOTYPE: $ |
2078 |
CODE: |
2079 |
_exit (code); |
2080 |
|
2081 |
int |
2082 |
cctx_stacksize (int new_stacksize = 0) |
2083 |
CODE: |
2084 |
RETVAL = cctx_stacksize; |
2085 |
if (new_stacksize) |
2086 |
{ |
2087 |
cctx_stacksize = new_stacksize; |
2088 |
++cctx_gen; |
2089 |
} |
2090 |
OUTPUT: |
2091 |
RETVAL |
2092 |
|
2093 |
int |
2094 |
cctx_max_idle (int max_idle = 0) |
2095 |
CODE: |
2096 |
RETVAL = cctx_max_idle; |
2097 |
if (max_idle > 1) |
2098 |
cctx_max_idle = max_idle; |
2099 |
OUTPUT: |
2100 |
RETVAL |
2101 |
|
2102 |
int |
2103 |
cctx_count () |
2104 |
CODE: |
2105 |
RETVAL = cctx_count; |
2106 |
OUTPUT: |
2107 |
RETVAL |
2108 |
|
2109 |
int |
2110 |
cctx_idle () |
2111 |
CODE: |
2112 |
RETVAL = cctx_idle; |
2113 |
OUTPUT: |
2114 |
RETVAL |
2115 |
|
2116 |
void |
2117 |
list () |
2118 |
PPCODE: |
2119 |
{ |
2120 |
struct coro *coro; |
2121 |
for (coro = coro_first; coro; coro = coro->next) |
2122 |
if (coro->hv) |
2123 |
XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
2124 |
} |
2125 |
|
2126 |
void |
2127 |
call (Coro::State coro, SV *coderef) |
2128 |
ALIAS: |
2129 |
eval = 1 |
2130 |
CODE: |
2131 |
{ |
2132 |
if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
2133 |
{ |
2134 |
struct coro temp; |
2135 |
|
2136 |
if (!(coro->flags & CF_RUNNING)) |
2137 |
{ |
2138 |
PUTBACK; |
2139 |
save_perl (aTHX_ &temp); |
2140 |
load_perl (aTHX_ coro); |
2141 |
} |
2142 |
|
2143 |
{ |
2144 |
dSP; |
2145 |
ENTER; |
2146 |
SAVETMPS; |
2147 |
PUTBACK; |
2148 |
PUSHSTACK; |
2149 |
PUSHMARK (SP); |
2150 |
|
2151 |
if (ix) |
2152 |
eval_sv (coderef, 0); |
2153 |
else |
2154 |
call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
2155 |
|
2156 |
POPSTACK; |
2157 |
SPAGAIN; |
2158 |
FREETMPS; |
2159 |
LEAVE; |
2160 |
PUTBACK; |
2161 |
} |
2162 |
|
2163 |
if (!(coro->flags & CF_RUNNING)) |
2164 |
{ |
2165 |
save_perl (aTHX_ coro); |
2166 |
load_perl (aTHX_ &temp); |
2167 |
SPAGAIN; |
2168 |
} |
2169 |
} |
2170 |
} |
2171 |
|
2172 |
SV * |
2173 |
is_ready (Coro::State coro) |
2174 |
PROTOTYPE: $ |
2175 |
ALIAS: |
2176 |
is_ready = CF_READY |
2177 |
is_running = CF_RUNNING |
2178 |
is_new = CF_NEW |
2179 |
is_destroyed = CF_DESTROYED |
2180 |
CODE: |
2181 |
RETVAL = boolSV (coro->flags & ix); |
2182 |
OUTPUT: |
2183 |
RETVAL |
2184 |
|
2185 |
void |
2186 |
throw (Coro::State self, SV *throw = &PL_sv_undef) |
2187 |
PROTOTYPE: $;$ |
2188 |
CODE: |
2189 |
SvREFCNT_dec (self->throw); |
2190 |
self->throw = SvOK (throw) ? newSVsv (throw) : 0; |
2191 |
|
2192 |
void |
2193 |
api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
2194 |
C_ARGS: aTHX_ coro, flags |
2195 |
|
2196 |
SV * |
2197 |
has_cctx (Coro::State coro) |
2198 |
PROTOTYPE: $ |
2199 |
CODE: |
2200 |
RETVAL = boolSV (!!coro->cctx); |
2201 |
OUTPUT: |
2202 |
RETVAL |
2203 |
|
2204 |
int |
2205 |
is_traced (Coro::State coro) |
2206 |
PROTOTYPE: $ |
2207 |
CODE: |
2208 |
RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
2209 |
OUTPUT: |
2210 |
RETVAL |
2211 |
|
2212 |
UV |
2213 |
rss (Coro::State coro) |
2214 |
PROTOTYPE: $ |
2215 |
ALIAS: |
2216 |
usecount = 1 |
2217 |
CODE: |
2218 |
switch (ix) |
2219 |
{ |
2220 |
case 0: RETVAL = coro_rss (aTHX_ coro); break; |
2221 |
case 1: RETVAL = coro->usecount; break; |
2222 |
} |
2223 |
OUTPUT: |
2224 |
RETVAL |
2225 |
|
2226 |
void |
2227 |
force_cctx () |
2228 |
CODE: |
2229 |
struct coro *coro = SvSTATE (coro_current); |
2230 |
coro->cctx->idle_sp = 0; |
2231 |
|
2232 |
void |
2233 |
swap_defsv (Coro::State self) |
2234 |
PROTOTYPE: $ |
2235 |
ALIAS: |
2236 |
swap_defav = 1 |
2237 |
CODE: |
2238 |
if (!self->slot) |
2239 |
croak ("cannot swap state with coroutine that has no saved state"); |
2240 |
else |
2241 |
{ |
2242 |
SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
2243 |
SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
2244 |
|
2245 |
SV *tmp = *src; *src = *dst; *dst = tmp; |
2246 |
} |
2247 |
|
2248 |
MODULE = Coro::State PACKAGE = Coro |
2249 |
|
2250 |
BOOT: |
2251 |
{ |
2252 |
int i; |
2253 |
|
2254 |
av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
2255 |
sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
2256 |
sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
2257 |
|
2258 |
coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); |
2259 |
SvREADONLY_on (coro_current); |
2260 |
|
2261 |
coro_stash = gv_stashpv ("Coro", TRUE); |
2262 |
|
2263 |
newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
2264 |
newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
2265 |
newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
2266 |
newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
2267 |
newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
2268 |
newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
2269 |
|
2270 |
for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
2271 |
coro_ready[i] = newAV (); |
2272 |
|
2273 |
{ |
2274 |
SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
2275 |
|
2276 |
coroapi.schedule = api_schedule; |
2277 |
coroapi.cede = api_cede; |
2278 |
coroapi.cede_notself = api_cede_notself; |
2279 |
coroapi.ready = api_ready; |
2280 |
coroapi.is_ready = api_is_ready; |
2281 |
coroapi.nready = coro_nready; |
2282 |
coroapi.current = coro_current; |
2283 |
|
2284 |
GCoroAPI = &coroapi; |
2285 |
sv_setiv (sv, (IV)&coroapi); |
2286 |
SvREADONLY_on (sv); |
2287 |
} |
2288 |
} |
2289 |
|
2290 |
void |
2291 |
_set_current (SV *current) |
2292 |
PROTOTYPE: $ |
2293 |
CODE: |
2294 |
SvREFCNT_dec (SvRV (coro_current)); |
2295 |
SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
2296 |
|
2297 |
void |
2298 |
_set_readyhook (SV *hook) |
2299 |
PROTOTYPE: $ |
2300 |
CODE: |
2301 |
LOCK; |
2302 |
SvREFCNT_dec (coro_readyhook); |
2303 |
coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; |
2304 |
UNLOCK; |
2305 |
|
2306 |
int |
2307 |
prio (Coro::State coro, int newprio = 0) |
2308 |
ALIAS: |
2309 |
nice = 1 |
2310 |
CODE: |
2311 |
{ |
2312 |
RETVAL = coro->prio; |
2313 |
|
2314 |
if (items > 1) |
2315 |
{ |
2316 |
if (ix) |
2317 |
newprio = coro->prio - newprio; |
2318 |
|
2319 |
if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
2320 |
if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
2321 |
|
2322 |
coro->prio = newprio; |
2323 |
} |
2324 |
} |
2325 |
OUTPUT: |
2326 |
RETVAL |
2327 |
|
2328 |
SV * |
2329 |
ready (SV *self) |
2330 |
PROTOTYPE: $ |
2331 |
CODE: |
2332 |
RETVAL = boolSV (api_ready (aTHX_ self)); |
2333 |
OUTPUT: |
2334 |
RETVAL |
2335 |
|
2336 |
int |
2337 |
nready (...) |
2338 |
PROTOTYPE: |
2339 |
CODE: |
2340 |
RETVAL = coro_nready; |
2341 |
OUTPUT: |
2342 |
RETVAL |
2343 |
|
2344 |
# for async_pool speedup |
2345 |
void |
2346 |
_pool_1 (SV *cb) |
2347 |
CODE: |
2348 |
{ |
2349 |
struct coro *coro = SvSTATE (coro_current); |
2350 |
HV *hv = (HV *)SvRV (coro_current); |
2351 |
AV *defav = GvAV (PL_defgv); |
2352 |
SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); |
2353 |
AV *invoke_av; |
2354 |
int i, len; |
2355 |
|
2356 |
if (!invoke) |
2357 |
{ |
2358 |
SV *old = PL_diehook; |
2359 |
PL_diehook = 0; |
2360 |
SvREFCNT_dec (old); |
2361 |
croak ("\3async_pool terminate\2\n"); |
2362 |
} |
2363 |
|
2364 |
SvREFCNT_dec (coro->saved_deffh); |
2365 |
coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
2366 |
|
2367 |
hv_store (hv, "desc", sizeof ("desc") - 1, |
2368 |
newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
2369 |
|
2370 |
invoke_av = (AV *)SvRV (invoke); |
2371 |
len = av_len (invoke_av); |
2372 |
|
2373 |
sv_setsv (cb, AvARRAY (invoke_av)[0]); |
2374 |
|
2375 |
if (len > 0) |
2376 |
{ |
2377 |
av_fill (defav, len - 1); |
2378 |
for (i = 0; i < len; ++i) |
2379 |
av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); |
2380 |
} |
2381 |
|
2382 |
SvREFCNT_dec (invoke); |
2383 |
} |
2384 |
|
2385 |
void |
2386 |
_pool_2 (SV *cb) |
2387 |
CODE: |
2388 |
{ |
2389 |
struct coro *coro = SvSTATE (coro_current); |
2390 |
|
2391 |
sv_setsv (cb, &PL_sv_undef); |
2392 |
|
2393 |
SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
2394 |
coro->saved_deffh = 0; |
2395 |
|
2396 |
if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
2397 |
|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
2398 |
{ |
2399 |
SV *old = PL_diehook; |
2400 |
PL_diehook = 0; |
2401 |
SvREFCNT_dec (old); |
2402 |
croak ("\3async_pool terminate\2\n"); |
2403 |
} |
2404 |
|
2405 |
av_clear (GvAV (PL_defgv)); |
2406 |
hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, |
2407 |
newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
2408 |
|
2409 |
coro->prio = 0; |
2410 |
|
2411 |
if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
2412 |
api_trace (aTHX_ coro_current, 0); |
2413 |
|
2414 |
av_push (av_async_pool, newSVsv (coro_current)); |
2415 |
} |
2416 |
|
2417 |
#if 0 |
2418 |
|
2419 |
void |
2420 |
_generator_call (...) |
2421 |
PROTOTYPE: @ |
2422 |
PPCODE: |
2423 |
fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr); |
2424 |
xxxx |
2425 |
abort (); |
2426 |
|
2427 |
SV * |
2428 |
gensub (SV *sub, ...) |
2429 |
PROTOTYPE: &;@ |
2430 |
CODE: |
2431 |
{ |
2432 |
struct coro *coro; |
2433 |
MAGIC *mg; |
2434 |
CV *xcv; |
2435 |
CV *ncv = (CV *)newSV_type (SVt_PVCV); |
2436 |
int i; |
2437 |
|
2438 |
CvGV (ncv) = CvGV (cv); |
2439 |
CvFILE (ncv) = CvFILE (cv); |
2440 |
|
2441 |
Newz (0, coro, 1, struct coro); |
2442 |
coro->args = newAV (); |
2443 |
coro->flags = CF_NEW; |
2444 |
|
2445 |
av_extend (coro->args, items - 1); |
2446 |
for (i = 1; i < items; i++) |
2447 |
av_push (coro->args, newSVsv (ST (i))); |
2448 |
|
2449 |
CvISXSUB_on (ncv); |
2450 |
CvXSUBANY (ncv).any_ptr = (void *)coro; |
2451 |
|
2452 |
xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV)); |
2453 |
|
2454 |
CvXSUB (ncv) = CvXSUB (xcv); |
2455 |
CvANON_on (ncv); |
2456 |
|
2457 |
mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0); |
2458 |
RETVAL = newRV_noinc ((SV *)ncv); |
2459 |
} |
2460 |
OUTPUT: |
2461 |
RETVAL |
2462 |
|
2463 |
#endif |
2464 |
|
2465 |
|
2466 |
MODULE = Coro::State PACKAGE = Coro::AIO |
2467 |
|
2468 |
void |
2469 |
_get_state (SV *self) |
2470 |
PPCODE: |
2471 |
{ |
2472 |
AV *defav = GvAV (PL_defgv); |
2473 |
AV *av = newAV (); |
2474 |
int i; |
2475 |
SV *data_sv = newSV (sizeof (struct io_state)); |
2476 |
struct io_state *data = (struct io_state *)SvPVX (data_sv); |
2477 |
SvCUR_set (data_sv, sizeof (struct io_state)); |
2478 |
SvPOK_only (data_sv); |
2479 |
|
2480 |
data->errorno = errno; |
2481 |
data->laststype = PL_laststype; |
2482 |
data->laststatval = PL_laststatval; |
2483 |
data->statcache = PL_statcache; |
2484 |
|
2485 |
av_extend (av, AvFILLp (defav) + 1 + 1); |
2486 |
|
2487 |
for (i = 0; i <= AvFILLp (defav); ++i) |
2488 |
av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); |
2489 |
|
2490 |
av_push (av, data_sv); |
2491 |
|
2492 |
XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
2493 |
|
2494 |
api_ready (aTHX_ self); |
2495 |
} |
2496 |
|
2497 |
void |
2498 |
_set_state (SV *state) |
2499 |
PROTOTYPE: $ |
2500 |
PPCODE: |
2501 |
{ |
2502 |
AV *av = (AV *)SvRV (state); |
2503 |
struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); |
2504 |
int i; |
2505 |
|
2506 |
errno = data->errorno; |
2507 |
PL_laststype = data->laststype; |
2508 |
PL_laststatval = data->laststatval; |
2509 |
PL_statcache = data->statcache; |
2510 |
|
2511 |
EXTEND (SP, AvFILLp (av)); |
2512 |
for (i = 0; i < AvFILLp (av); ++i) |
2513 |
PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); |
2514 |
} |
2515 |
|
2516 |
|
2517 |
MODULE = Coro::State PACKAGE = Coro::AnyEvent |
2518 |
|
2519 |
BOOT: |
2520 |
sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
2521 |
|
2522 |
SV * |
2523 |
_schedule (...) |
2524 |
PROTOTYPE: @ |
2525 |
CODE: |
2526 |
{ |
2527 |
static int incede; |
2528 |
|
2529 |
api_cede_notself (aTHX); |
2530 |
|
2531 |
++incede; |
2532 |
while (coro_nready >= incede && api_cede (aTHX)) |
2533 |
; |
2534 |
|
2535 |
sv_setsv (sv_activity, &PL_sv_undef); |
2536 |
if (coro_nready >= incede) |
2537 |
{ |
2538 |
PUSHMARK (SP); |
2539 |
PUTBACK; |
2540 |
call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); |
2541 |
SPAGAIN; |
2542 |
} |
2543 |
|
2544 |
--incede; |
2545 |
} |
2546 |
|
2547 |
|
2548 |
MODULE = Coro::State PACKAGE = PerlIO::cede |
2549 |
|
2550 |
BOOT: |
2551 |
PerlIO_define_layer (aTHX_ &PerlIO_cede); |
2552 |
|