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