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