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 |
/* helper storage struct for Coro::AIO */ |
137 |
struct io_state |
138 |
{ |
139 |
int errorno; |
140 |
I32 laststype; |
141 |
int laststatval; |
142 |
Stat_t statcache; |
143 |
}; |
144 |
|
145 |
static size_t coro_stacksize = CORO_STACKSIZE; |
146 |
static struct CoroAPI coroapi; |
147 |
static AV *main_mainstack; /* used to differentiate between $main and others */ |
148 |
static JMPENV *main_top_env; |
149 |
static HV *coro_state_stash, *coro_stash; |
150 |
static volatile SV *coro_mortal; /* will be freed after next transfer */ |
151 |
|
152 |
static GV *irsgv; /* $/ */ |
153 |
static GV *stdoutgv; /* *STDOUT */ |
154 |
static SV *rv_diehook; |
155 |
static SV *rv_warnhook; |
156 |
static HV *hv_sig; /* %SIG */ |
157 |
|
158 |
/* async_pool helper stuff */ |
159 |
static SV *sv_pool_rss; |
160 |
static SV *sv_pool_size; |
161 |
static AV *av_async_pool; |
162 |
|
163 |
static struct coro_cctx *cctx_first; |
164 |
static int cctx_count, cctx_idle; |
165 |
|
166 |
enum { |
167 |
CC_MAPPED = 0x01, |
168 |
CC_NOREUSE = 0x02, /* throw this away after tracing */ |
169 |
CC_TRACE = 0x04, |
170 |
CC_TRACE_SUB = 0x08, /* trace sub calls */ |
171 |
CC_TRACE_LINE = 0x10, /* trace each statement */ |
172 |
CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
173 |
}; |
174 |
|
175 |
/* this is a structure representing a c-level coroutine */ |
176 |
typedef struct coro_cctx { |
177 |
struct coro_cctx *next; |
178 |
|
179 |
/* the stack */ |
180 |
void *sptr; |
181 |
size_t ssize; |
182 |
|
183 |
/* cpu state */ |
184 |
void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
185 |
JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
186 |
JMPENV *top_env; |
187 |
coro_context cctx; |
188 |
|
189 |
#if CORO_USE_VALGRIND |
190 |
int valgrind_id; |
191 |
#endif |
192 |
unsigned char flags; |
193 |
} coro_cctx; |
194 |
|
195 |
enum { |
196 |
CF_RUNNING = 0x0001, /* coroutine is running */ |
197 |
CF_READY = 0x0002, /* coroutine is ready */ |
198 |
CF_NEW = 0x0004, /* has never been switched to */ |
199 |
CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
200 |
}; |
201 |
|
202 |
/* the structure where most of the perl state is stored, overlaid on the cxstack */ |
203 |
typedef struct { |
204 |
SV *defsv; |
205 |
AV *defav; |
206 |
SV *errsv; |
207 |
SV *irsgv; |
208 |
#define VAR(name,type) type name; |
209 |
# include "state.h" |
210 |
#undef VAR |
211 |
} perl_slots; |
212 |
|
213 |
#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
214 |
|
215 |
/* this is a structure representing a perl-level coroutine */ |
216 |
struct coro { |
217 |
/* the c coroutine allocated to this perl coroutine, if any */ |
218 |
coro_cctx *cctx; |
219 |
|
220 |
/* process data */ |
221 |
AV *mainstack; |
222 |
perl_slots *slot; /* basically the saved sp */ |
223 |
|
224 |
AV *args; /* data associated with this coroutine (initial args) */ |
225 |
int refcnt; /* coroutines are refcounted, yes */ |
226 |
int flags; /* CF_ flags */ |
227 |
HV *hv; /* the perl hash associated with this coro, if any */ |
228 |
|
229 |
/* statistics */ |
230 |
int usecount; /* number of transfers to this coro */ |
231 |
|
232 |
/* coro process data */ |
233 |
int prio; |
234 |
SV *throw; /* exception to be thrown */ |
235 |
|
236 |
/* async_pool */ |
237 |
SV *saved_deffh; |
238 |
|
239 |
/* linked list */ |
240 |
struct coro *next, *prev; |
241 |
}; |
242 |
|
243 |
typedef struct coro *Coro__State; |
244 |
typedef struct coro *Coro__State_or_hashref; |
245 |
|
246 |
/** Coro ********************************************************************/ |
247 |
|
248 |
#define PRIO_MAX 3 |
249 |
#define PRIO_HIGH 1 |
250 |
#define PRIO_NORMAL 0 |
251 |
#define PRIO_LOW -1 |
252 |
#define PRIO_IDLE -3 |
253 |
#define PRIO_MIN -4 |
254 |
|
255 |
/* for Coro.pm */ |
256 |
static SV *coro_current; |
257 |
static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
258 |
static int coro_nready; |
259 |
static struct coro *coro_first; |
260 |
|
261 |
/** lowlevel stuff **********************************************************/ |
262 |
|
263 |
static SV * |
264 |
coro_get_sv (pTHX_ const char *name, int create) |
265 |
{ |
266 |
#if PERL_VERSION_ATLEAST (5,9,0) |
267 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
268 |
get_sv (name, create); |
269 |
#endif |
270 |
return get_sv (name, create); |
271 |
} |
272 |
|
273 |
static AV * |
274 |
coro_get_av (pTHX_ const char *name, int create) |
275 |
{ |
276 |
#if PERL_VERSION_ATLEAST (5,9,0) |
277 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
278 |
get_av (name, create); |
279 |
#endif |
280 |
return get_av (name, create); |
281 |
} |
282 |
|
283 |
static HV * |
284 |
coro_get_hv (pTHX_ const char *name, int create) |
285 |
{ |
286 |
#if PERL_VERSION_ATLEAST (5,9,0) |
287 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
288 |
get_hv (name, create); |
289 |
#endif |
290 |
return get_hv (name, create); |
291 |
} |
292 |
|
293 |
static AV * |
294 |
coro_clone_padlist (pTHX_ CV *cv) |
295 |
{ |
296 |
AV *padlist = CvPADLIST (cv); |
297 |
AV *newpadlist, *newpad; |
298 |
|
299 |
newpadlist = newAV (); |
300 |
AvREAL_off (newpadlist); |
301 |
#if PERL_VERSION_ATLEAST (5,9,0) |
302 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
303 |
#else |
304 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
305 |
#endif |
306 |
newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
307 |
--AvFILLp (padlist); |
308 |
|
309 |
av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
310 |
av_store (newpadlist, 1, (SV *)newpad); |
311 |
|
312 |
return newpadlist; |
313 |
} |
314 |
|
315 |
static void |
316 |
free_padlist (pTHX_ AV *padlist) |
317 |
{ |
318 |
/* may be during global destruction */ |
319 |
if (SvREFCNT (padlist)) |
320 |
{ |
321 |
I32 i = AvFILLp (padlist); |
322 |
while (i >= 0) |
323 |
{ |
324 |
SV **svp = av_fetch (padlist, i--, FALSE); |
325 |
if (svp) |
326 |
{ |
327 |
SV *sv; |
328 |
while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
329 |
SvREFCNT_dec (sv); |
330 |
|
331 |
SvREFCNT_dec (*svp); |
332 |
} |
333 |
} |
334 |
|
335 |
SvREFCNT_dec ((SV*)padlist); |
336 |
} |
337 |
} |
338 |
|
339 |
static int |
340 |
coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
341 |
{ |
342 |
AV *padlist; |
343 |
AV *av = (AV *)mg->mg_obj; |
344 |
|
345 |
/* casting is fun. */ |
346 |
while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
347 |
free_padlist (aTHX_ padlist); |
348 |
|
349 |
return 0; |
350 |
} |
351 |
|
352 |
#define CORO_MAGIC_type_cv PERL_MAGIC_ext |
353 |
#define CORO_MAGIC_type_state PERL_MAGIC_ext |
354 |
|
355 |
static MGVTBL coro_cv_vtbl = { |
356 |
0, 0, 0, 0, |
357 |
coro_cv_free |
358 |
}; |
359 |
|
360 |
#define CORO_MAGIC(sv,type) \ |
361 |
SvMAGIC (sv) \ |
362 |
? SvMAGIC (sv)->mg_type == type \ |
363 |
? SvMAGIC (sv) \ |
364 |
: mg_find (sv, type) \ |
365 |
: 0 |
366 |
|
367 |
#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
368 |
#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) |
369 |
|
370 |
static struct coro * |
371 |
SvSTATE_ (pTHX_ SV *coro) |
372 |
{ |
373 |
HV *stash; |
374 |
MAGIC *mg; |
375 |
|
376 |
if (SvROK (coro)) |
377 |
coro = SvRV (coro); |
378 |
|
379 |
if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
380 |
croak ("Coro::State object required"); |
381 |
|
382 |
stash = SvSTASH (coro); |
383 |
if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
384 |
{ |
385 |
/* very slow, but rare, check */ |
386 |
if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
387 |
croak ("Coro::State object required"); |
388 |
} |
389 |
|
390 |
mg = CORO_MAGIC_state (coro); |
391 |
return (struct coro *)mg->mg_ptr; |
392 |
} |
393 |
|
394 |
#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
395 |
|
396 |
/* the next two functions merely cache the padlists */ |
397 |
static void |
398 |
get_padlist (pTHX_ CV *cv) |
399 |
{ |
400 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
401 |
AV *av; |
402 |
|
403 |
if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
404 |
CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
405 |
else |
406 |
{ |
407 |
#if CORO_PREFER_PERL_FUNCTIONS |
408 |
/* this is probably cleaner, but also slower? */ |
409 |
CV *cp = Perl_cv_clone (cv); |
410 |
CvPADLIST (cv) = CvPADLIST (cp); |
411 |
CvPADLIST (cp) = 0; |
412 |
SvREFCNT_dec (cp); |
413 |
#else |
414 |
CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
415 |
#endif |
416 |
} |
417 |
} |
418 |
|
419 |
static void |
420 |
put_padlist (pTHX_ CV *cv) |
421 |
{ |
422 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
423 |
AV *av; |
424 |
|
425 |
if (expect_false (!mg)) |
426 |
mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
427 |
|
428 |
av = (AV *)mg->mg_obj; |
429 |
|
430 |
if (expect_false (AvFILLp (av) >= AvMAX (av))) |
431 |
av_extend (av, AvMAX (av) + 1); |
432 |
|
433 |
AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
434 |
} |
435 |
|
436 |
/** load & save, init *******************************************************/ |
437 |
|
438 |
static void |
439 |
load_perl (pTHX_ Coro__State c) |
440 |
{ |
441 |
perl_slots *slot = c->slot; |
442 |
c->slot = 0; |
443 |
|
444 |
PL_mainstack = c->mainstack; |
445 |
|
446 |
GvSV (PL_defgv) = slot->defsv; |
447 |
GvAV (PL_defgv) = slot->defav; |
448 |
GvSV (PL_errgv) = slot->errsv; |
449 |
GvSV (irsgv) = slot->irsgv; |
450 |
|
451 |
#define VAR(name,type) PL_ ## name = slot->name; |
452 |
# include "state.h" |
453 |
#undef VAR |
454 |
|
455 |
{ |
456 |
dSP; |
457 |
|
458 |
CV *cv; |
459 |
|
460 |
/* now do the ugly restore mess */ |
461 |
while (expect_true (cv = (CV *)POPs)) |
462 |
{ |
463 |
put_padlist (aTHX_ cv); /* mark this padlist as available */ |
464 |
CvDEPTH (cv) = PTR2IV (POPs); |
465 |
CvPADLIST (cv) = (AV *)POPs; |
466 |
} |
467 |
|
468 |
PUTBACK; |
469 |
} |
470 |
} |
471 |
|
472 |
static void |
473 |
save_perl (pTHX_ Coro__State c) |
474 |
{ |
475 |
{ |
476 |
dSP; |
477 |
I32 cxix = cxstack_ix; |
478 |
PERL_CONTEXT *ccstk = cxstack; |
479 |
PERL_SI *top_si = PL_curstackinfo; |
480 |
|
481 |
/* |
482 |
* the worst thing you can imagine happens first - we have to save |
483 |
* (and reinitialize) all cv's in the whole callchain :( |
484 |
*/ |
485 |
|
486 |
XPUSHs (Nullsv); |
487 |
/* this loop was inspired by pp_caller */ |
488 |
for (;;) |
489 |
{ |
490 |
while (expect_true (cxix >= 0)) |
491 |
{ |
492 |
PERL_CONTEXT *cx = &ccstk[cxix--]; |
493 |
|
494 |
if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) |
495 |
{ |
496 |
CV *cv = cx->blk_sub.cv; |
497 |
|
498 |
if (expect_true (CvDEPTH (cv))) |
499 |
{ |
500 |
EXTEND (SP, 3); |
501 |
PUSHs ((SV *)CvPADLIST (cv)); |
502 |
PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
503 |
PUSHs ((SV *)cv); |
504 |
|
505 |
CvDEPTH (cv) = 0; |
506 |
get_padlist (aTHX_ cv); |
507 |
} |
508 |
} |
509 |
} |
510 |
|
511 |
if (expect_true (top_si->si_type == PERLSI_MAIN)) |
512 |
break; |
513 |
|
514 |
top_si = top_si->si_prev; |
515 |
ccstk = top_si->si_cxstack; |
516 |
cxix = top_si->si_cxix; |
517 |
} |
518 |
|
519 |
PUTBACK; |
520 |
} |
521 |
|
522 |
/* allocate some space on the context stack for our purposes */ |
523 |
/* we manually unroll here, as usually 2 slots is enough */ |
524 |
if (SLOT_COUNT >= 1) CXINC; |
525 |
if (SLOT_COUNT >= 2) CXINC; |
526 |
if (SLOT_COUNT >= 3) CXINC; |
527 |
{ |
528 |
int i; |
529 |
for (i = 3; i < SLOT_COUNT; ++i) |
530 |
CXINC; |
531 |
} |
532 |
cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
533 |
|
534 |
c->mainstack = PL_mainstack; |
535 |
|
536 |
{ |
537 |
perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
538 |
|
539 |
slot->defav = GvAV (PL_defgv); |
540 |
slot->defsv = DEFSV; |
541 |
slot->errsv = ERRSV; |
542 |
slot->irsgv = GvSV (irsgv); |
543 |
|
544 |
#define VAR(name,type) slot->name = PL_ ## name; |
545 |
# include "state.h" |
546 |
#undef VAR |
547 |
} |
548 |
} |
549 |
|
550 |
/* |
551 |
* allocate various perl stacks. This is an exact copy |
552 |
* of perl.c:init_stacks, except that it uses less memory |
553 |
* on the (sometimes correct) assumption that coroutines do |
554 |
* not usually need a lot of stackspace. |
555 |
*/ |
556 |
#if CORO_PREFER_PERL_FUNCTIONS |
557 |
# define coro_init_stacks init_stacks |
558 |
#else |
559 |
static void |
560 |
coro_init_stacks (pTHX) |
561 |
{ |
562 |
PL_curstackinfo = new_stackinfo(32, 8); |
563 |
PL_curstackinfo->si_type = PERLSI_MAIN; |
564 |
PL_curstack = PL_curstackinfo->si_stack; |
565 |
PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
566 |
|
567 |
PL_stack_base = AvARRAY(PL_curstack); |
568 |
PL_stack_sp = PL_stack_base; |
569 |
PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
570 |
|
571 |
New(50,PL_tmps_stack,32,SV*); |
572 |
PL_tmps_floor = -1; |
573 |
PL_tmps_ix = -1; |
574 |
PL_tmps_max = 32; |
575 |
|
576 |
New(54,PL_markstack,16,I32); |
577 |
PL_markstack_ptr = PL_markstack; |
578 |
PL_markstack_max = PL_markstack + 16; |
579 |
|
580 |
#ifdef SET_MARK_OFFSET |
581 |
SET_MARK_OFFSET; |
582 |
#endif |
583 |
|
584 |
New(54,PL_scopestack,8,I32); |
585 |
PL_scopestack_ix = 0; |
586 |
PL_scopestack_max = 8; |
587 |
|
588 |
New(54,PL_savestack,24,ANY); |
589 |
PL_savestack_ix = 0; |
590 |
PL_savestack_max = 24; |
591 |
|
592 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
593 |
New(54,PL_retstack,4,OP*); |
594 |
PL_retstack_ix = 0; |
595 |
PL_retstack_max = 4; |
596 |
#endif |
597 |
} |
598 |
#endif |
599 |
|
600 |
/* |
601 |
* destroy the stacks, the callchain etc... |
602 |
*/ |
603 |
static void |
604 |
coro_destroy_stacks (pTHX) |
605 |
{ |
606 |
while (PL_curstackinfo->si_next) |
607 |
PL_curstackinfo = PL_curstackinfo->si_next; |
608 |
|
609 |
while (PL_curstackinfo) |
610 |
{ |
611 |
PERL_SI *p = PL_curstackinfo->si_prev; |
612 |
|
613 |
if (!IN_DESTRUCT) |
614 |
SvREFCNT_dec (PL_curstackinfo->si_stack); |
615 |
|
616 |
Safefree (PL_curstackinfo->si_cxstack); |
617 |
Safefree (PL_curstackinfo); |
618 |
PL_curstackinfo = p; |
619 |
} |
620 |
|
621 |
Safefree (PL_tmps_stack); |
622 |
Safefree (PL_markstack); |
623 |
Safefree (PL_scopestack); |
624 |
Safefree (PL_savestack); |
625 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
626 |
Safefree (PL_retstack); |
627 |
#endif |
628 |
} |
629 |
|
630 |
static size_t |
631 |
coro_rss (pTHX_ struct coro *coro) |
632 |
{ |
633 |
size_t rss = sizeof (*coro); |
634 |
|
635 |
if (coro->mainstack) |
636 |
{ |
637 |
perl_slots tmp_slot; |
638 |
perl_slots *slot; |
639 |
|
640 |
if (coro->flags & CF_RUNNING) |
641 |
{ |
642 |
slot = &tmp_slot; |
643 |
|
644 |
#define VAR(name,type) slot->name = PL_ ## name; |
645 |
# include "state.h" |
646 |
#undef VAR |
647 |
} |
648 |
else |
649 |
slot = coro->slot; |
650 |
|
651 |
rss += sizeof (slot->curstackinfo); |
652 |
rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); |
653 |
rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); |
654 |
rss += slot->tmps_max * sizeof (SV *); |
655 |
rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); |
656 |
rss += slot->scopestack_max * sizeof (I32); |
657 |
rss += slot->savestack_max * sizeof (ANY); |
658 |
|
659 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
660 |
rss += slot->retstack_max * sizeof (OP *); |
661 |
#endif |
662 |
} |
663 |
|
664 |
return rss; |
665 |
} |
666 |
|
667 |
/** coroutine stack handling ************************************************/ |
668 |
|
669 |
#if 0 |
670 |
static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
671 |
|
672 |
/* |
673 |
* This overrides the default magic get method of %SIG elements. |
674 |
* The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
675 |
* and instead of tryign to save and restore the hash elements, we just provide |
676 |
* readback here. |
677 |
* We only do this when the hook is != 0, as they are often set to 0 temporarily, |
678 |
* not expecting this to actually change the hook. This is a potential problem |
679 |
* when a schedule happens then, but we ignore this. |
680 |
*/ |
681 |
static int |
682 |
coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
683 |
{ |
684 |
return orig_sigelem_get (aTHX_ sv, mg); |
685 |
const char *s = MgPV_nolen_const (mg); |
686 |
|
687 |
if (*s == '_') |
688 |
{ |
689 |
if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; |
690 |
if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; |
691 |
} |
692 |
|
693 |
return orig_sigelem_get (aTHX_ sv, mg); |
694 |
} |
695 |
#endif |
696 |
|
697 |
static void |
698 |
coro_setup (pTHX_ struct coro *coro) |
699 |
{ |
700 |
/* |
701 |
* emulate part of the perl startup here. |
702 |
*/ |
703 |
coro_init_stacks (aTHX); |
704 |
|
705 |
PL_runops = RUNOPS_DEFAULT; |
706 |
PL_curcop = &PL_compiling; |
707 |
PL_in_eval = EVAL_NULL; |
708 |
PL_comppad = 0; |
709 |
PL_curpm = 0; |
710 |
PL_curpad = 0; |
711 |
PL_localizing = 0; |
712 |
PL_dirty = 0; |
713 |
PL_restartop = 0; |
714 |
|
715 |
/* recreate the die/warn hooks */ |
716 |
PL_diehook = 0; |
717 |
hv_store (hv_sig, "__DIE__", sizeof ("__DIE__") - 1, newSV (0), 0); |
718 |
PL_diehook = SvREFCNT_inc (rv_diehook); |
719 |
|
720 |
PL_warnhook = 0; |
721 |
hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, newSV (0), 0); |
722 |
PL_warnhook = SvREFCNT_inc (rv_warnhook); |
723 |
|
724 |
GvSV (PL_defgv) = newSV (0); |
725 |
GvAV (PL_defgv) = coro->args; coro->args = 0; |
726 |
GvSV (PL_errgv) = newSV (0); |
727 |
GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
728 |
PL_rs = newSVsv (GvSV (irsgv)); |
729 |
PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); |
730 |
|
731 |
{ |
732 |
dSP; |
733 |
LOGOP myop; |
734 |
|
735 |
Zero (&myop, 1, LOGOP); |
736 |
myop.op_next = Nullop; |
737 |
myop.op_flags = OPf_WANT_VOID; |
738 |
|
739 |
PUSHMARK (SP); |
740 |
XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
741 |
PUTBACK; |
742 |
PL_op = (OP *)&myop; |
743 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
744 |
SPAGAIN; |
745 |
} |
746 |
|
747 |
/* this newly created coroutine might be run on an existing cctx which most |
748 |
* likely was suspended in set_stacklevel, called from entersub. |
749 |
* set_stacklevl doesn't do anything on return, but entersub does LEAVE, |
750 |
* so we ENTER here for symmetry |
751 |
*/ |
752 |
ENTER; |
753 |
} |
754 |
|
755 |
static void |
756 |
coro_destroy (pTHX_ struct coro *coro) |
757 |
{ |
758 |
if (!IN_DESTRUCT) |
759 |
{ |
760 |
/* restore all saved variables and stuff */ |
761 |
LEAVE_SCOPE (0); |
762 |
assert (PL_tmps_floor == -1); |
763 |
|
764 |
/* free all temporaries */ |
765 |
FREETMPS; |
766 |
assert (PL_tmps_ix == -1); |
767 |
|
768 |
/* unwind all extra stacks */ |
769 |
POPSTACK_TO (PL_mainstack); |
770 |
|
771 |
/* unwind main stack */ |
772 |
dounwind (-1); |
773 |
} |
774 |
|
775 |
SvREFCNT_dec (GvSV (PL_defgv)); |
776 |
SvREFCNT_dec (GvAV (PL_defgv)); |
777 |
SvREFCNT_dec (GvSV (PL_errgv)); |
778 |
SvREFCNT_dec (PL_defoutgv); |
779 |
SvREFCNT_dec (PL_rs); |
780 |
SvREFCNT_dec (GvSV (irsgv)); |
781 |
|
782 |
SvREFCNT_dec (PL_diehook); |
783 |
SvREFCNT_dec (PL_warnhook); |
784 |
|
785 |
SvREFCNT_dec (coro->saved_deffh); |
786 |
SvREFCNT_dec (coro->throw); |
787 |
|
788 |
coro_destroy_stacks (aTHX); |
789 |
} |
790 |
|
791 |
static void |
792 |
free_coro_mortal (pTHX) |
793 |
{ |
794 |
if (expect_true (coro_mortal)) |
795 |
{ |
796 |
SvREFCNT_dec (coro_mortal); |
797 |
coro_mortal = 0; |
798 |
} |
799 |
} |
800 |
|
801 |
static int |
802 |
runops_trace (pTHX) |
803 |
{ |
804 |
COP *oldcop = 0; |
805 |
int oldcxix = -2; |
806 |
struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ |
807 |
coro_cctx *cctx = coro->cctx; |
808 |
|
809 |
while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
810 |
{ |
811 |
PERL_ASYNC_CHECK (); |
812 |
|
813 |
if (cctx->flags & CC_TRACE_ALL) |
814 |
{ |
815 |
if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) |
816 |
{ |
817 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
818 |
SV **bot, **top; |
819 |
AV *av = newAV (); /* return values */ |
820 |
SV **cb; |
821 |
dSP; |
822 |
|
823 |
GV *gv = CvGV (cx->blk_sub.cv); |
824 |
SV *fullname = sv_2mortal (newSV (0)); |
825 |
if (isGV (gv)) |
826 |
gv_efullname3 (fullname, gv, 0); |
827 |
|
828 |
bot = PL_stack_base + cx->blk_oldsp + 1; |
829 |
top = cx->blk_gimme == G_ARRAY ? SP + 1 |
830 |
: cx->blk_gimme == G_SCALAR ? bot + 1 |
831 |
: bot; |
832 |
|
833 |
av_extend (av, top - bot); |
834 |
while (bot < top) |
835 |
av_push (av, SvREFCNT_inc (*bot++)); |
836 |
|
837 |
PL_runops = RUNOPS_DEFAULT; |
838 |
ENTER; |
839 |
SAVETMPS; |
840 |
EXTEND (SP, 3); |
841 |
PUSHMARK (SP); |
842 |
PUSHs (&PL_sv_no); |
843 |
PUSHs (fullname); |
844 |
PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
845 |
PUTBACK; |
846 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
847 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
848 |
SPAGAIN; |
849 |
FREETMPS; |
850 |
LEAVE; |
851 |
PL_runops = runops_trace; |
852 |
} |
853 |
|
854 |
if (oldcop != PL_curcop) |
855 |
{ |
856 |
oldcop = PL_curcop; |
857 |
|
858 |
if (PL_curcop != &PL_compiling) |
859 |
{ |
860 |
SV **cb; |
861 |
|
862 |
if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) |
863 |
{ |
864 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
865 |
|
866 |
if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
867 |
{ |
868 |
runops_proc_t old_runops = PL_runops; |
869 |
dSP; |
870 |
GV *gv = CvGV (cx->blk_sub.cv); |
871 |
SV *fullname = sv_2mortal (newSV (0)); |
872 |
|
873 |
if (isGV (gv)) |
874 |
gv_efullname3 (fullname, gv, 0); |
875 |
|
876 |
PL_runops = RUNOPS_DEFAULT; |
877 |
ENTER; |
878 |
SAVETMPS; |
879 |
EXTEND (SP, 3); |
880 |
PUSHMARK (SP); |
881 |
PUSHs (&PL_sv_yes); |
882 |
PUSHs (fullname); |
883 |
PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
884 |
PUTBACK; |
885 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
886 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
887 |
SPAGAIN; |
888 |
FREETMPS; |
889 |
LEAVE; |
890 |
PL_runops = runops_trace; |
891 |
} |
892 |
|
893 |
oldcxix = cxstack_ix; |
894 |
} |
895 |
|
896 |
if (cctx->flags & CC_TRACE_LINE) |
897 |
{ |
898 |
dSP; |
899 |
|
900 |
PL_runops = RUNOPS_DEFAULT; |
901 |
ENTER; |
902 |
SAVETMPS; |
903 |
EXTEND (SP, 3); |
904 |
PL_runops = RUNOPS_DEFAULT; |
905 |
PUSHMARK (SP); |
906 |
PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
907 |
PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
908 |
PUTBACK; |
909 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
910 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
911 |
SPAGAIN; |
912 |
FREETMPS; |
913 |
LEAVE; |
914 |
PL_runops = runops_trace; |
915 |
} |
916 |
} |
917 |
} |
918 |
} |
919 |
} |
920 |
|
921 |
TAINT_NOT; |
922 |
return 0; |
923 |
} |
924 |
|
925 |
/* inject a fake call to Coro::State::_cctx_init into the execution */ |
926 |
/* _cctx_init should be careful, as it could be called at almost any time */ |
927 |
/* during execution of a perl program */ |
928 |
static void NOINLINE |
929 |
cctx_prepare (pTHX_ coro_cctx *cctx) |
930 |
{ |
931 |
dSP; |
932 |
LOGOP myop; |
933 |
|
934 |
PL_top_env = &PL_start_env; |
935 |
|
936 |
if (cctx->flags & CC_TRACE) |
937 |
PL_runops = runops_trace; |
938 |
|
939 |
Zero (&myop, 1, LOGOP); |
940 |
myop.op_next = PL_op; |
941 |
myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
942 |
|
943 |
PUSHMARK (SP); |
944 |
EXTEND (SP, 2); |
945 |
PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
946 |
PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
947 |
PUTBACK; |
948 |
PL_op = (OP *)&myop; |
949 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
950 |
SPAGAIN; |
951 |
} |
952 |
|
953 |
/* |
954 |
* this is a _very_ stripped down perl interpreter ;) |
955 |
*/ |
956 |
static void |
957 |
cctx_run (void *arg) |
958 |
{ |
959 |
dTHX; |
960 |
|
961 |
/* cctx_run is the alternative tail of transfer(), so unlock here. */ |
962 |
UNLOCK; |
963 |
|
964 |
/* we now skip the entersub that lead to transfer() */ |
965 |
PL_op = PL_op->op_next; |
966 |
|
967 |
/* inject a fake subroutine call to cctx_init */ |
968 |
cctx_prepare (aTHX_ (coro_cctx *)arg); |
969 |
|
970 |
/* somebody or something will hit me for both perl_run and PL_restartop */ |
971 |
PL_restartop = PL_op; |
972 |
perl_run (PL_curinterp); |
973 |
|
974 |
/* |
975 |
* If perl-run returns we assume exit() was being called or the coro |
976 |
* fell off the end, which seems to be the only valid (non-bug) |
977 |
* reason for perl_run to return. We try to exit by jumping to the |
978 |
* bootstrap-time "top" top_env, as we cannot restore the "main" |
979 |
* coroutine as Coro has no such concept |
980 |
*/ |
981 |
PL_top_env = main_top_env; |
982 |
JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
983 |
} |
984 |
|
985 |
static coro_cctx * |
986 |
cctx_new () |
987 |
{ |
988 |
coro_cctx *cctx; |
989 |
void *stack_start; |
990 |
size_t stack_size; |
991 |
|
992 |
++cctx_count; |
993 |
|
994 |
Newz (0, cctx, 1, coro_cctx); |
995 |
|
996 |
#if HAVE_MMAP |
997 |
cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
998 |
/* mmap supposedly does allocate-on-write for us */ |
999 |
cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
1000 |
|
1001 |
if (cctx->sptr != (void *)-1) |
1002 |
{ |
1003 |
# if CORO_STACKGUARD |
1004 |
mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
1005 |
# endif |
1006 |
stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; |
1007 |
stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
1008 |
cctx->flags |= CC_MAPPED; |
1009 |
} |
1010 |
else |
1011 |
#endif |
1012 |
{ |
1013 |
cctx->ssize = coro_stacksize * (long)sizeof (long); |
1014 |
New (0, cctx->sptr, coro_stacksize, long); |
1015 |
|
1016 |
if (!cctx->sptr) |
1017 |
{ |
1018 |
perror ("FATAL: unable to allocate stack for coroutine"); |
1019 |
_exit (EXIT_FAILURE); |
1020 |
} |
1021 |
|
1022 |
stack_start = cctx->sptr; |
1023 |
stack_size = cctx->ssize; |
1024 |
} |
1025 |
|
1026 |
REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); |
1027 |
coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
1028 |
|
1029 |
return cctx; |
1030 |
} |
1031 |
|
1032 |
static void |
1033 |
cctx_destroy (coro_cctx *cctx) |
1034 |
{ |
1035 |
if (!cctx) |
1036 |
return; |
1037 |
|
1038 |
--cctx_count; |
1039 |
|
1040 |
#if CORO_USE_VALGRIND |
1041 |
VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
1042 |
#endif |
1043 |
|
1044 |
#if HAVE_MMAP |
1045 |
if (cctx->flags & CC_MAPPED) |
1046 |
munmap (cctx->sptr, cctx->ssize); |
1047 |
else |
1048 |
#endif |
1049 |
Safefree (cctx->sptr); |
1050 |
|
1051 |
Safefree (cctx); |
1052 |
} |
1053 |
|
1054 |
/* wether this cctx should be destructed */ |
1055 |
#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) |
1056 |
|
1057 |
static coro_cctx * |
1058 |
cctx_get (pTHX) |
1059 |
{ |
1060 |
while (expect_true (cctx_first)) |
1061 |
{ |
1062 |
coro_cctx *cctx = cctx_first; |
1063 |
cctx_first = cctx->next; |
1064 |
--cctx_idle; |
1065 |
|
1066 |
if (expect_true (!CCTX_EXPIRED (cctx))) |
1067 |
return cctx; |
1068 |
|
1069 |
cctx_destroy (cctx); |
1070 |
} |
1071 |
|
1072 |
return cctx_new (); |
1073 |
} |
1074 |
|
1075 |
static void |
1076 |
cctx_put (coro_cctx *cctx) |
1077 |
{ |
1078 |
/* free another cctx if overlimit */ |
1079 |
if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) |
1080 |
{ |
1081 |
coro_cctx *first = cctx_first; |
1082 |
cctx_first = first->next; |
1083 |
--cctx_idle; |
1084 |
|
1085 |
cctx_destroy (first); |
1086 |
} |
1087 |
|
1088 |
++cctx_idle; |
1089 |
cctx->next = cctx_first; |
1090 |
cctx_first = cctx; |
1091 |
} |
1092 |
|
1093 |
/** coroutine switching *****************************************************/ |
1094 |
|
1095 |
static void |
1096 |
transfer_check (pTHX_ struct coro *prev, struct coro *next) |
1097 |
{ |
1098 |
if (expect_true (prev != next)) |
1099 |
{ |
1100 |
if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
1101 |
croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); |
1102 |
|
1103 |
if (expect_false (next->flags & CF_RUNNING)) |
1104 |
croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
1105 |
|
1106 |
if (expect_false (next->flags & CF_DESTROYED)) |
1107 |
croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
1108 |
|
1109 |
if ( |
1110 |
#if PERL_VERSION_ATLEAST (5,9,0) |
1111 |
expect_false (PL_parser) |
1112 |
#else |
1113 |
expect_false (PL_lex_state != LEX_NOTPARSING) |
1114 |
#endif |
1115 |
) |
1116 |
croak ("Coro::State::transfer called while parsing, but this is not supported"); |
1117 |
} |
1118 |
} |
1119 |
|
1120 |
/* always use the TRANSFER macro */ |
1121 |
static void NOINLINE |
1122 |
transfer (pTHX_ struct coro *prev, struct coro *next) |
1123 |
{ |
1124 |
dSTACKLEVEL; |
1125 |
static volatile int has_throw; |
1126 |
|
1127 |
/* sometimes transfer is only called to set idle_sp */ |
1128 |
if (expect_false (!next)) |
1129 |
{ |
1130 |
((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
1131 |
assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1132 |
} |
1133 |
else if (expect_true (prev != next)) |
1134 |
{ |
1135 |
coro_cctx *prev__cctx; |
1136 |
|
1137 |
if (expect_false (prev->flags & CF_NEW)) |
1138 |
{ |
1139 |
/* create a new empty context */ |
1140 |
Newz (0, prev->cctx, 1, coro_cctx); |
1141 |
prev->flags &= ~CF_NEW; |
1142 |
prev->flags |= CF_RUNNING; |
1143 |
} |
1144 |
|
1145 |
prev->flags &= ~CF_RUNNING; |
1146 |
next->flags |= CF_RUNNING; |
1147 |
|
1148 |
LOCK; |
1149 |
|
1150 |
/* first get rid of the old state */ |
1151 |
save_perl (aTHX_ prev); |
1152 |
|
1153 |
if (expect_false (next->flags & CF_NEW)) |
1154 |
{ |
1155 |
/* need to start coroutine */ |
1156 |
next->flags &= ~CF_NEW; |
1157 |
/* setup coroutine call */ |
1158 |
coro_setup (aTHX_ next); |
1159 |
} |
1160 |
else |
1161 |
load_perl (aTHX_ next); |
1162 |
|
1163 |
prev__cctx = prev->cctx; |
1164 |
|
1165 |
/* possibly "free" the cctx */ |
1166 |
if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) |
1167 |
{ |
1168 |
/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
1169 |
assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
1170 |
|
1171 |
prev->cctx = 0; |
1172 |
|
1173 |
/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
1174 |
/* without this the next cctx_get might destroy the prev__cctx while still in use */ |
1175 |
if (expect_false (CCTX_EXPIRED (prev__cctx))) |
1176 |
if (!next->cctx) |
1177 |
next->cctx = cctx_get (aTHX); |
1178 |
|
1179 |
cctx_put (prev__cctx); |
1180 |
} |
1181 |
|
1182 |
++next->usecount; |
1183 |
|
1184 |
if (expect_true (!next->cctx)) |
1185 |
next->cctx = cctx_get (aTHX); |
1186 |
|
1187 |
has_throw = !!next->throw; |
1188 |
|
1189 |
if (expect_false (prev__cctx != next->cctx)) |
1190 |
{ |
1191 |
prev__cctx->top_env = PL_top_env; |
1192 |
PL_top_env = next->cctx->top_env; |
1193 |
coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
1194 |
} |
1195 |
|
1196 |
free_coro_mortal (aTHX); |
1197 |
UNLOCK; |
1198 |
|
1199 |
if (expect_false (has_throw)) |
1200 |
{ |
1201 |
struct coro *coro = SvSTATE (coro_current); |
1202 |
|
1203 |
if (coro->throw) |
1204 |
{ |
1205 |
SV *exception = coro->throw; |
1206 |
coro->throw = 0; |
1207 |
sv_setsv (ERRSV, exception); |
1208 |
croak (0); |
1209 |
} |
1210 |
} |
1211 |
} |
1212 |
} |
1213 |
|
1214 |
struct transfer_args |
1215 |
{ |
1216 |
struct coro *prev, *next; |
1217 |
}; |
1218 |
|
1219 |
#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) |
1220 |
#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
1221 |
|
1222 |
/** high level stuff ********************************************************/ |
1223 |
|
1224 |
static int |
1225 |
coro_state_destroy (pTHX_ struct coro *coro) |
1226 |
{ |
1227 |
if (coro->flags & CF_DESTROYED) |
1228 |
return 0; |
1229 |
|
1230 |
coro->flags |= CF_DESTROYED; |
1231 |
|
1232 |
if (coro->flags & CF_READY) |
1233 |
{ |
1234 |
/* reduce nready, as destroying a ready coro effectively unreadies it */ |
1235 |
/* alternative: look through all ready queues and remove the coro */ |
1236 |
LOCK; |
1237 |
--coro_nready; |
1238 |
UNLOCK; |
1239 |
} |
1240 |
else |
1241 |
coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
1242 |
|
1243 |
if (coro->mainstack && coro->mainstack != main_mainstack) |
1244 |
{ |
1245 |
struct coro temp; |
1246 |
|
1247 |
if (coro->flags & CF_RUNNING) |
1248 |
croak ("FATAL: tried to destroy currently running coroutine"); |
1249 |
|
1250 |
save_perl (aTHX_ &temp); |
1251 |
load_perl (aTHX_ coro); |
1252 |
|
1253 |
coro_destroy (aTHX_ coro); |
1254 |
|
1255 |
load_perl (aTHX_ &temp); |
1256 |
|
1257 |
coro->slot = 0; |
1258 |
} |
1259 |
|
1260 |
cctx_destroy (coro->cctx); |
1261 |
SvREFCNT_dec (coro->args); |
1262 |
|
1263 |
if (coro->next) coro->next->prev = coro->prev; |
1264 |
if (coro->prev) coro->prev->next = coro->next; |
1265 |
if (coro == coro_first) coro_first = coro->next; |
1266 |
|
1267 |
return 1; |
1268 |
} |
1269 |
|
1270 |
static int |
1271 |
coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
1272 |
{ |
1273 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1274 |
mg->mg_ptr = 0; |
1275 |
|
1276 |
coro->hv = 0; |
1277 |
|
1278 |
if (--coro->refcnt < 0) |
1279 |
{ |
1280 |
coro_state_destroy (aTHX_ coro); |
1281 |
Safefree (coro); |
1282 |
} |
1283 |
|
1284 |
return 0; |
1285 |
} |
1286 |
|
1287 |
static int |
1288 |
coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
1289 |
{ |
1290 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1291 |
|
1292 |
++coro->refcnt; |
1293 |
|
1294 |
return 0; |
1295 |
} |
1296 |
|
1297 |
static MGVTBL coro_state_vtbl = { |
1298 |
0, 0, 0, 0, |
1299 |
coro_state_free, |
1300 |
0, |
1301 |
#ifdef MGf_DUP |
1302 |
coro_state_dup, |
1303 |
#else |
1304 |
# define MGf_DUP 0 |
1305 |
#endif |
1306 |
}; |
1307 |
|
1308 |
static void |
1309 |
prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
1310 |
{ |
1311 |
ta->prev = SvSTATE (prev_sv); |
1312 |
ta->next = SvSTATE (next_sv); |
1313 |
TRANSFER_CHECK (*ta); |
1314 |
} |
1315 |
|
1316 |
static void |
1317 |
api_transfer (SV *prev_sv, SV *next_sv) |
1318 |
{ |
1319 |
dTHX; |
1320 |
struct transfer_args ta; |
1321 |
|
1322 |
prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1323 |
TRANSFER (ta); |
1324 |
} |
1325 |
|
1326 |
/** Coro ********************************************************************/ |
1327 |
|
1328 |
static void |
1329 |
coro_enq (pTHX_ SV *coro_sv) |
1330 |
{ |
1331 |
av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
1332 |
} |
1333 |
|
1334 |
static SV * |
1335 |
coro_deq (pTHX) |
1336 |
{ |
1337 |
int prio; |
1338 |
|
1339 |
for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) |
1340 |
if (AvFILLp (coro_ready [prio]) >= 0) |
1341 |
return av_shift (coro_ready [prio]); |
1342 |
|
1343 |
return 0; |
1344 |
} |
1345 |
|
1346 |
static int |
1347 |
api_ready (SV *coro_sv) |
1348 |
{ |
1349 |
dTHX; |
1350 |
struct coro *coro; |
1351 |
|
1352 |
if (SvROK (coro_sv)) |
1353 |
coro_sv = SvRV (coro_sv); |
1354 |
|
1355 |
coro = SvSTATE (coro_sv); |
1356 |
|
1357 |
if (coro->flags & CF_READY) |
1358 |
return 0; |
1359 |
|
1360 |
coro->flags |= CF_READY; |
1361 |
|
1362 |
LOCK; |
1363 |
coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); |
1364 |
++coro_nready; |
1365 |
UNLOCK; |
1366 |
|
1367 |
return 1; |
1368 |
} |
1369 |
|
1370 |
static int |
1371 |
api_is_ready (SV *coro_sv) |
1372 |
{ |
1373 |
dTHX; |
1374 |
return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1375 |
} |
1376 |
|
1377 |
static void |
1378 |
prepare_schedule (pTHX_ struct transfer_args *ta) |
1379 |
{ |
1380 |
SV *prev_sv, *next_sv; |
1381 |
|
1382 |
for (;;) |
1383 |
{ |
1384 |
LOCK; |
1385 |
next_sv = coro_deq (aTHX); |
1386 |
|
1387 |
/* nothing to schedule: call the idle handler */ |
1388 |
if (expect_false (!next_sv)) |
1389 |
{ |
1390 |
dSP; |
1391 |
UNLOCK; |
1392 |
|
1393 |
ENTER; |
1394 |
SAVETMPS; |
1395 |
|
1396 |
PUSHMARK (SP); |
1397 |
PUTBACK; |
1398 |
call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
1399 |
SPAGAIN; |
1400 |
|
1401 |
FREETMPS; |
1402 |
LEAVE; |
1403 |
continue; |
1404 |
} |
1405 |
|
1406 |
ta->next = SvSTATE (next_sv); |
1407 |
|
1408 |
/* cannot transfer to destroyed coros, skip and look for next */ |
1409 |
if (expect_false (ta->next->flags & CF_DESTROYED)) |
1410 |
{ |
1411 |
UNLOCK; |
1412 |
SvREFCNT_dec (next_sv); |
1413 |
/* coro_nready is already taken care of by destroy */ |
1414 |
continue; |
1415 |
} |
1416 |
|
1417 |
--coro_nready; |
1418 |
UNLOCK; |
1419 |
break; |
1420 |
} |
1421 |
|
1422 |
/* free this only after the transfer */ |
1423 |
prev_sv = SvRV (coro_current); |
1424 |
ta->prev = SvSTATE (prev_sv); |
1425 |
TRANSFER_CHECK (*ta); |
1426 |
assert (ta->next->flags & CF_READY); |
1427 |
ta->next->flags &= ~CF_READY; |
1428 |
SvRV_set (coro_current, next_sv); |
1429 |
|
1430 |
LOCK; |
1431 |
free_coro_mortal (aTHX); |
1432 |
coro_mortal = prev_sv; |
1433 |
UNLOCK; |
1434 |
} |
1435 |
|
1436 |
static void |
1437 |
prepare_cede (pTHX_ struct transfer_args *ta) |
1438 |
{ |
1439 |
api_ready (coro_current); |
1440 |
prepare_schedule (aTHX_ ta); |
1441 |
} |
1442 |
|
1443 |
static int |
1444 |
prepare_cede_notself (pTHX_ struct transfer_args *ta) |
1445 |
{ |
1446 |
if (coro_nready) |
1447 |
{ |
1448 |
SV *prev = SvRV (coro_current); |
1449 |
prepare_schedule (aTHX_ ta); |
1450 |
api_ready (prev); |
1451 |
return 1; |
1452 |
} |
1453 |
else |
1454 |
return 0; |
1455 |
} |
1456 |
|
1457 |
static void |
1458 |
api_schedule (void) |
1459 |
{ |
1460 |
dTHX; |
1461 |
struct transfer_args ta; |
1462 |
|
1463 |
prepare_schedule (aTHX_ &ta); |
1464 |
TRANSFER (ta); |
1465 |
} |
1466 |
|
1467 |
static int |
1468 |
api_cede (void) |
1469 |
{ |
1470 |
dTHX; |
1471 |
struct transfer_args ta; |
1472 |
|
1473 |
prepare_cede (aTHX_ &ta); |
1474 |
|
1475 |
if (expect_true (ta.prev != ta.next)) |
1476 |
{ |
1477 |
TRANSFER (ta); |
1478 |
return 1; |
1479 |
} |
1480 |
else |
1481 |
return 0; |
1482 |
} |
1483 |
|
1484 |
static int |
1485 |
api_cede_notself (void) |
1486 |
{ |
1487 |
dTHX; |
1488 |
struct transfer_args ta; |
1489 |
|
1490 |
if (prepare_cede_notself (aTHX_ &ta)) |
1491 |
{ |
1492 |
TRANSFER (ta); |
1493 |
return 1; |
1494 |
} |
1495 |
else |
1496 |
return 0; |
1497 |
} |
1498 |
|
1499 |
static void |
1500 |
api_trace (SV *coro_sv, int flags) |
1501 |
{ |
1502 |
dTHX; |
1503 |
struct coro *coro = SvSTATE (coro_sv); |
1504 |
|
1505 |
if (flags & CC_TRACE) |
1506 |
{ |
1507 |
if (!coro->cctx) |
1508 |
coro->cctx = cctx_new (); |
1509 |
else if (!(coro->cctx->flags & CC_TRACE)) |
1510 |
croak ("cannot enable tracing on coroutine with custom stack"); |
1511 |
|
1512 |
coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
1513 |
} |
1514 |
else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
1515 |
{ |
1516 |
coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
1517 |
|
1518 |
if (coro->flags & CF_RUNNING) |
1519 |
PL_runops = RUNOPS_DEFAULT; |
1520 |
else |
1521 |
coro->slot->runops = RUNOPS_DEFAULT; |
1522 |
} |
1523 |
} |
1524 |
|
1525 |
MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
1526 |
|
1527 |
PROTOTYPES: DISABLE |
1528 |
|
1529 |
BOOT: |
1530 |
{ |
1531 |
#ifdef USE_ITHREADS |
1532 |
MUTEX_INIT (&coro_mutex); |
1533 |
#endif |
1534 |
BOOT_PAGESIZE; |
1535 |
|
1536 |
irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
1537 |
stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
1538 |
#if 0 |
1539 |
orig_sigelem_get = PL_vtbl_sigelem.svt_get; |
1540 |
PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
1541 |
#endif |
1542 |
hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
1543 |
rv_diehook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
1544 |
rv_warnhook = SvREFCNT_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
1545 |
|
1546 |
coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1547 |
|
1548 |
newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
1549 |
newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
1550 |
newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
1551 |
newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
1552 |
|
1553 |
main_mainstack = PL_mainstack; |
1554 |
main_top_env = PL_top_env; |
1555 |
|
1556 |
while (main_top_env->je_prev) |
1557 |
main_top_env = main_top_env->je_prev; |
1558 |
|
1559 |
coroapi.ver = CORO_API_VERSION; |
1560 |
coroapi.rev = CORO_API_REVISION; |
1561 |
coroapi.transfer = api_transfer; |
1562 |
|
1563 |
assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1564 |
} |
1565 |
|
1566 |
SV * |
1567 |
new (char *klass, ...) |
1568 |
CODE: |
1569 |
{ |
1570 |
struct coro *coro; |
1571 |
MAGIC *mg; |
1572 |
HV *hv; |
1573 |
int i; |
1574 |
|
1575 |
Newz (0, coro, 1, struct coro); |
1576 |
coro->args = newAV (); |
1577 |
coro->flags = CF_NEW; |
1578 |
|
1579 |
if (coro_first) coro_first->prev = coro; |
1580 |
coro->next = coro_first; |
1581 |
coro_first = coro; |
1582 |
|
1583 |
coro->hv = hv = newHV (); |
1584 |
mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
1585 |
mg->mg_flags |= MGf_DUP; |
1586 |
RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1587 |
|
1588 |
av_extend (coro->args, items - 1); |
1589 |
for (i = 1; i < items; i++) |
1590 |
av_push (coro->args, newSVsv (ST (i))); |
1591 |
} |
1592 |
OUTPUT: |
1593 |
RETVAL |
1594 |
|
1595 |
# these not obviously related functions are all rolled into the same xs |
1596 |
# function to increase chances that they all will call transfer with the same |
1597 |
# stack offset |
1598 |
void |
1599 |
_set_stacklevel (...) |
1600 |
ALIAS: |
1601 |
Coro::State::transfer = 1 |
1602 |
Coro::schedule = 2 |
1603 |
Coro::cede = 3 |
1604 |
Coro::cede_notself = 4 |
1605 |
CODE: |
1606 |
{ |
1607 |
struct transfer_args ta; |
1608 |
|
1609 |
PUTBACK; |
1610 |
switch (ix) |
1611 |
{ |
1612 |
case 0: |
1613 |
ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1614 |
ta.next = 0; |
1615 |
break; |
1616 |
|
1617 |
case 1: |
1618 |
if (items != 2) |
1619 |
croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
1620 |
|
1621 |
prepare_transfer (aTHX_ &ta, ST (0), ST (1)); |
1622 |
break; |
1623 |
|
1624 |
case 2: |
1625 |
prepare_schedule (aTHX_ &ta); |
1626 |
break; |
1627 |
|
1628 |
case 3: |
1629 |
prepare_cede (aTHX_ &ta); |
1630 |
break; |
1631 |
|
1632 |
case 4: |
1633 |
if (!prepare_cede_notself (aTHX_ &ta)) |
1634 |
XSRETURN_EMPTY; |
1635 |
|
1636 |
break; |
1637 |
} |
1638 |
SPAGAIN; |
1639 |
|
1640 |
BARRIER; |
1641 |
PUTBACK; |
1642 |
TRANSFER (ta); |
1643 |
SPAGAIN; /* might be the sp of a different coroutine now */ |
1644 |
/* be extra careful not to ever do anything after TRANSFER */ |
1645 |
} |
1646 |
|
1647 |
bool |
1648 |
_destroy (SV *coro_sv) |
1649 |
CODE: |
1650 |
RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
1651 |
OUTPUT: |
1652 |
RETVAL |
1653 |
|
1654 |
void |
1655 |
_exit (code) |
1656 |
int code |
1657 |
PROTOTYPE: $ |
1658 |
CODE: |
1659 |
_exit (code); |
1660 |
|
1661 |
int |
1662 |
cctx_stacksize (int new_stacksize = 0) |
1663 |
CODE: |
1664 |
RETVAL = coro_stacksize; |
1665 |
if (new_stacksize) |
1666 |
coro_stacksize = new_stacksize; |
1667 |
OUTPUT: |
1668 |
RETVAL |
1669 |
|
1670 |
int |
1671 |
cctx_count () |
1672 |
CODE: |
1673 |
RETVAL = cctx_count; |
1674 |
OUTPUT: |
1675 |
RETVAL |
1676 |
|
1677 |
int |
1678 |
cctx_idle () |
1679 |
CODE: |
1680 |
RETVAL = cctx_idle; |
1681 |
OUTPUT: |
1682 |
RETVAL |
1683 |
|
1684 |
void |
1685 |
list () |
1686 |
PPCODE: |
1687 |
{ |
1688 |
struct coro *coro; |
1689 |
for (coro = coro_first; coro; coro = coro->next) |
1690 |
if (coro->hv) |
1691 |
XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
1692 |
} |
1693 |
|
1694 |
void |
1695 |
call (Coro::State coro, SV *coderef) |
1696 |
ALIAS: |
1697 |
eval = 1 |
1698 |
CODE: |
1699 |
{ |
1700 |
if (coro->mainstack) |
1701 |
{ |
1702 |
struct coro temp; |
1703 |
|
1704 |
if (!(coro->flags & CF_RUNNING)) |
1705 |
{ |
1706 |
PUTBACK; |
1707 |
save_perl (aTHX_ &temp); |
1708 |
load_perl (aTHX_ coro); |
1709 |
} |
1710 |
|
1711 |
{ |
1712 |
dSP; |
1713 |
ENTER; |
1714 |
SAVETMPS; |
1715 |
PUTBACK; |
1716 |
PUSHSTACK; |
1717 |
PUSHMARK (SP); |
1718 |
|
1719 |
if (ix) |
1720 |
eval_sv (coderef, 0); |
1721 |
else |
1722 |
call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1723 |
|
1724 |
POPSTACK; |
1725 |
SPAGAIN; |
1726 |
FREETMPS; |
1727 |
LEAVE; |
1728 |
PUTBACK; |
1729 |
} |
1730 |
|
1731 |
if (!(coro->flags & CF_RUNNING)) |
1732 |
{ |
1733 |
save_perl (aTHX_ coro); |
1734 |
load_perl (aTHX_ &temp); |
1735 |
SPAGAIN; |
1736 |
} |
1737 |
} |
1738 |
} |
1739 |
|
1740 |
SV * |
1741 |
is_ready (Coro::State coro) |
1742 |
PROTOTYPE: $ |
1743 |
ALIAS: |
1744 |
is_ready = CF_READY |
1745 |
is_running = CF_RUNNING |
1746 |
is_new = CF_NEW |
1747 |
is_destroyed = CF_DESTROYED |
1748 |
CODE: |
1749 |
RETVAL = boolSV (coro->flags & ix); |
1750 |
OUTPUT: |
1751 |
RETVAL |
1752 |
|
1753 |
void |
1754 |
api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
1755 |
|
1756 |
SV * |
1757 |
has_stack (Coro::State coro) |
1758 |
PROTOTYPE: $ |
1759 |
CODE: |
1760 |
RETVAL = boolSV (!!coro->cctx); |
1761 |
OUTPUT: |
1762 |
RETVAL |
1763 |
|
1764 |
int |
1765 |
is_traced (Coro::State coro) |
1766 |
PROTOTYPE: $ |
1767 |
CODE: |
1768 |
RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
1769 |
OUTPUT: |
1770 |
RETVAL |
1771 |
|
1772 |
IV |
1773 |
rss (Coro::State coro) |
1774 |
PROTOTYPE: $ |
1775 |
ALIAS: |
1776 |
usecount = 1 |
1777 |
CODE: |
1778 |
switch (ix) |
1779 |
{ |
1780 |
case 0: RETVAL = coro_rss (aTHX_ coro); break; |
1781 |
case 1: RETVAL = coro->usecount; break; |
1782 |
} |
1783 |
OUTPUT: |
1784 |
RETVAL |
1785 |
|
1786 |
|
1787 |
MODULE = Coro::State PACKAGE = Coro |
1788 |
|
1789 |
BOOT: |
1790 |
{ |
1791 |
int i; |
1792 |
|
1793 |
sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
1794 |
sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
1795 |
av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
1796 |
|
1797 |
coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); |
1798 |
SvREADONLY_on (coro_current); |
1799 |
|
1800 |
coro_stash = gv_stashpv ("Coro", TRUE); |
1801 |
|
1802 |
newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1803 |
newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1804 |
newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1805 |
newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1806 |
newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1807 |
newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1808 |
|
1809 |
for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1810 |
coro_ready[i] = newAV (); |
1811 |
|
1812 |
{ |
1813 |
SV *sv = perl_get_sv ("Coro::API", TRUE); |
1814 |
perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */ |
1815 |
|
1816 |
coroapi.schedule = api_schedule; |
1817 |
coroapi.cede = api_cede; |
1818 |
coroapi.cede_notself = api_cede_notself; |
1819 |
coroapi.ready = api_ready; |
1820 |
coroapi.is_ready = api_is_ready; |
1821 |
coroapi.nready = &coro_nready; |
1822 |
coroapi.current = coro_current; |
1823 |
|
1824 |
GCoroAPI = &coroapi; |
1825 |
sv_setiv (sv, (IV)&coroapi); |
1826 |
SvREADONLY_on (sv); |
1827 |
} |
1828 |
} |
1829 |
|
1830 |
void |
1831 |
_set_current (SV *current) |
1832 |
PROTOTYPE: $ |
1833 |
CODE: |
1834 |
SvREFCNT_dec (SvRV (coro_current)); |
1835 |
SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
1836 |
|
1837 |
int |
1838 |
prio (Coro::State coro, int newprio = 0) |
1839 |
ALIAS: |
1840 |
nice = 1 |
1841 |
CODE: |
1842 |
{ |
1843 |
RETVAL = coro->prio; |
1844 |
|
1845 |
if (items > 1) |
1846 |
{ |
1847 |
if (ix) |
1848 |
newprio = coro->prio - newprio; |
1849 |
|
1850 |
if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1851 |
if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1852 |
|
1853 |
coro->prio = newprio; |
1854 |
} |
1855 |
} |
1856 |
OUTPUT: |
1857 |
RETVAL |
1858 |
|
1859 |
SV * |
1860 |
ready (SV *self) |
1861 |
PROTOTYPE: $ |
1862 |
CODE: |
1863 |
RETVAL = boolSV (api_ready (self)); |
1864 |
OUTPUT: |
1865 |
RETVAL |
1866 |
|
1867 |
int |
1868 |
nready (...) |
1869 |
PROTOTYPE: |
1870 |
CODE: |
1871 |
RETVAL = coro_nready; |
1872 |
OUTPUT: |
1873 |
RETVAL |
1874 |
|
1875 |
void |
1876 |
throw (Coro::State self, SV *throw = &PL_sv_undef) |
1877 |
PROTOTYPE: $;$ |
1878 |
CODE: |
1879 |
SvREFCNT_dec (self->throw); |
1880 |
self->throw = SvOK (throw) ? newSVsv (throw) : 0; |
1881 |
|
1882 |
# for async_pool speedup |
1883 |
void |
1884 |
_pool_1 (SV *cb) |
1885 |
CODE: |
1886 |
{ |
1887 |
struct coro *coro = SvSTATE (coro_current); |
1888 |
HV *hv = (HV *)SvRV (coro_current); |
1889 |
AV *defav = GvAV (PL_defgv); |
1890 |
SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); |
1891 |
AV *invoke_av; |
1892 |
int i, len; |
1893 |
|
1894 |
if (!invoke) |
1895 |
croak ("\3async_pool terminate\2\n"); |
1896 |
|
1897 |
SvREFCNT_dec (coro->saved_deffh); |
1898 |
coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); |
1899 |
|
1900 |
hv_store (hv, "desc", sizeof ("desc") - 1, |
1901 |
newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
1902 |
|
1903 |
invoke_av = (AV *)SvRV (invoke); |
1904 |
len = av_len (invoke_av); |
1905 |
|
1906 |
sv_setsv (cb, AvARRAY (invoke_av)[0]); |
1907 |
|
1908 |
if (len > 0) |
1909 |
{ |
1910 |
av_fill (defav, len - 1); |
1911 |
for (i = 0; i < len; ++i) |
1912 |
av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); |
1913 |
} |
1914 |
|
1915 |
SvREFCNT_dec (invoke); |
1916 |
} |
1917 |
|
1918 |
void |
1919 |
_pool_2 (SV *cb) |
1920 |
CODE: |
1921 |
{ |
1922 |
struct coro *coro = SvSTATE (coro_current); |
1923 |
|
1924 |
sv_setsv (cb, &PL_sv_undef); |
1925 |
|
1926 |
SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
1927 |
coro->saved_deffh = 0; |
1928 |
|
1929 |
if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) |
1930 |
|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
1931 |
croak ("\3async_pool terminate\2\n"); |
1932 |
|
1933 |
av_clear (GvAV (PL_defgv)); |
1934 |
hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, |
1935 |
newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
1936 |
|
1937 |
coro->prio = 0; |
1938 |
|
1939 |
if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
1940 |
api_trace (coro_current, 0); |
1941 |
|
1942 |
av_push (av_async_pool, newSVsv (coro_current)); |
1943 |
} |
1944 |
|
1945 |
|
1946 |
MODULE = Coro::State PACKAGE = Coro::AIO |
1947 |
|
1948 |
SV * |
1949 |
_get_state () |
1950 |
CODE: |
1951 |
{ |
1952 |
struct io_state *data; |
1953 |
|
1954 |
RETVAL = newSV (sizeof (struct io_state)); |
1955 |
data = (struct io_state *)SvPVX (RETVAL); |
1956 |
SvCUR_set (RETVAL, sizeof (struct io_state)); |
1957 |
SvPOK_only (RETVAL); |
1958 |
|
1959 |
data->errorno = errno; |
1960 |
data->laststype = PL_laststype; |
1961 |
data->laststatval = PL_laststatval; |
1962 |
data->statcache = PL_statcache; |
1963 |
} |
1964 |
OUTPUT: |
1965 |
RETVAL |
1966 |
|
1967 |
void |
1968 |
_set_state (char *data_) |
1969 |
PROTOTYPE: $ |
1970 |
CODE: |
1971 |
{ |
1972 |
struct io_state *data = (void *)data_; |
1973 |
|
1974 |
errno = data->errorno; |
1975 |
PL_laststype = data->laststype; |
1976 |
PL_laststatval = data->laststatval; |
1977 |
PL_statcache = data->statcache; |
1978 |
} |
1979 |
|