1 |
#include "libcoro/coro.c" |
2 |
|
3 |
#define PERL_NO_GET_CONTEXT |
4 |
|
5 |
#include "EXTERN.h" |
6 |
#include "perl.h" |
7 |
#include "XSUB.h" |
8 |
|
9 |
#include "patchlevel.h" |
10 |
|
11 |
#include <stdio.h> |
12 |
#include <errno.h> |
13 |
#include <assert.h> |
14 |
|
15 |
#ifdef HAVE_MMAP |
16 |
# include <unistd.h> |
17 |
# include <sys/mman.h> |
18 |
# ifndef MAP_ANONYMOUS |
19 |
# ifdef MAP_ANON |
20 |
# define MAP_ANONYMOUS MAP_ANON |
21 |
# else |
22 |
# undef HAVE_MMAP |
23 |
# endif |
24 |
# endif |
25 |
# include <limits.h> |
26 |
# ifndef PAGESIZE |
27 |
# define PAGESIZE pagesize |
28 |
# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
29 |
static long pagesize; |
30 |
# else |
31 |
# define BOOT_PAGESIZE (void)0 |
32 |
# endif |
33 |
#else |
34 |
# define PAGESIZE 0 |
35 |
# define BOOT_PAGESIZE (void)0 |
36 |
#endif |
37 |
|
38 |
#if CORO_USE_VALGRIND |
39 |
# include <valgrind/valgrind.h> |
40 |
# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end)) |
41 |
#else |
42 |
# define REGISTER_STACK(cctx,start,end) |
43 |
#endif |
44 |
|
45 |
/* the maximum number of idle cctx that will be pooled */ |
46 |
#define MAX_IDLE_CCTX 8 |
47 |
|
48 |
#define PERL_VERSION_ATLEAST(a,b,c) \ |
49 |
(PERL_REVISION > (a) \ |
50 |
|| (PERL_REVISION == (a) \ |
51 |
&& (PERL_VERSION > (b) \ |
52 |
|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
53 |
|
54 |
#if !PERL_VERSION_ATLEAST (5,6,0) |
55 |
# ifndef PL_ppaddr |
56 |
# define PL_ppaddr ppaddr |
57 |
# endif |
58 |
# ifndef call_sv |
59 |
# define call_sv perl_call_sv |
60 |
# endif |
61 |
# ifndef get_sv |
62 |
# define get_sv perl_get_sv |
63 |
# endif |
64 |
# ifndef get_cv |
65 |
# define get_cv perl_get_cv |
66 |
# endif |
67 |
# ifndef IS_PADGV |
68 |
# define IS_PADGV(v) 0 |
69 |
# endif |
70 |
# ifndef IS_PADCONST |
71 |
# define IS_PADCONST(v) 0 |
72 |
# endif |
73 |
#endif |
74 |
|
75 |
/* 5.8.7 */ |
76 |
#ifndef SvRV_set |
77 |
# define SvRV_set(s,v) SvRV(s) = (v) |
78 |
#endif |
79 |
|
80 |
#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
81 |
# undef CORO_STACKGUARD |
82 |
#endif |
83 |
|
84 |
#ifndef CORO_STACKGUARD |
85 |
# define CORO_STACKGUARD 0 |
86 |
#endif |
87 |
|
88 |
/* prefer perl internal functions over our own? */ |
89 |
#ifndef CORO_PREFER_PERL_FUNCTIONS |
90 |
# define CORO_PREFER_PERL_FUNCTIONS 0 |
91 |
#endif |
92 |
|
93 |
/* The next macros try to return the current stack pointer, in an as |
94 |
* portable way as possible. */ |
95 |
#define dSTACKLEVEL volatile char stacklevel |
96 |
#define STACKLEVEL ((void *)&stacklevel) |
97 |
|
98 |
#define IN_DESTRUCT (PL_main_cv == Nullcv) |
99 |
|
100 |
#if __GNUC__ >= 3 |
101 |
# define attribute(x) __attribute__(x) |
102 |
# define BARRIER __asm__ __volatile__ ("" : : : "memory") |
103 |
#else |
104 |
# define attribute(x) |
105 |
# define BARRIER |
106 |
#endif |
107 |
|
108 |
#define NOINLINE attribute ((noinline)) |
109 |
|
110 |
#include "CoroAPI.h" |
111 |
|
112 |
#ifdef USE_ITHREADS |
113 |
static perl_mutex coro_mutex; |
114 |
# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
115 |
# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
116 |
#else |
117 |
# define LOCK (void)0 |
118 |
# define UNLOCK (void)0 |
119 |
#endif |
120 |
|
121 |
/* helper storage struct for Coro::AIO */ |
122 |
struct io_state |
123 |
{ |
124 |
int errorno; |
125 |
I32 laststype; |
126 |
int laststatval; |
127 |
Stat_t statcache; |
128 |
}; |
129 |
|
130 |
static size_t coro_stacksize = CORO_STACKSIZE; |
131 |
static struct CoroAPI coroapi; |
132 |
static AV *main_mainstack; /* used to differentiate between $main and others */ |
133 |
static JMPENV *main_top_env; |
134 |
static HV *coro_state_stash, *coro_stash; |
135 |
static SV *coro_mortal; /* will be freed after next transfer */ |
136 |
|
137 |
static struct coro_cctx *cctx_first; |
138 |
static int cctx_count, cctx_idle; |
139 |
|
140 |
/* this is a structure representing a c-level coroutine */ |
141 |
typedef struct coro_cctx { |
142 |
struct coro_cctx *next; |
143 |
|
144 |
/* the stack */ |
145 |
void *sptr; |
146 |
size_t ssize; |
147 |
|
148 |
/* cpu state */ |
149 |
void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
150 |
JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
151 |
JMPENV *top_env; |
152 |
coro_context cctx; |
153 |
|
154 |
#if CORO_USE_VALGRIND |
155 |
int valgrind_id; |
156 |
#endif |
157 |
char inuse, mapped; |
158 |
} coro_cctx; |
159 |
|
160 |
enum { |
161 |
CF_RUNNING = 0x0001, /* coroutine is running */ |
162 |
CF_READY = 0x0002, /* coroutine is ready */ |
163 |
CF_NEW = 0x0004, /* has never been switched to */ |
164 |
CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
165 |
}; |
166 |
|
167 |
/* this is a structure representing a perl-level coroutine */ |
168 |
struct coro { |
169 |
/* the c coroutine allocated to this perl coroutine, if any */ |
170 |
coro_cctx *cctx; |
171 |
|
172 |
/* data associated with this coroutine (initial args) */ |
173 |
AV *args; |
174 |
int refcnt; |
175 |
int save; /* CORO_SAVE flags */ |
176 |
int flags; /* CF_ flags */ |
177 |
|
178 |
/* optionally saved, might be zero */ |
179 |
AV *defav; /* @_ */ |
180 |
SV *defsv; /* $_ */ |
181 |
SV *errsv; /* $@ */ |
182 |
GV *deffh; /* default filehandle */ |
183 |
SV *irssv; /* $/ */ |
184 |
SV *irssv_sv; /* real $/ cache */ |
185 |
|
186 |
#define VAR(name,type) type name; |
187 |
# include "state.h" |
188 |
#undef VAR |
189 |
|
190 |
/* coro process data */ |
191 |
int prio; |
192 |
|
193 |
/* linked list */ |
194 |
struct coro *next, *prev; |
195 |
HV *hv; /* the perl hash associated with this coro, if any */ |
196 |
}; |
197 |
|
198 |
typedef struct coro *Coro__State; |
199 |
typedef struct coro *Coro__State_or_hashref; |
200 |
|
201 |
/** Coro ********************************************************************/ |
202 |
|
203 |
#define PRIO_MAX 3 |
204 |
#define PRIO_HIGH 1 |
205 |
#define PRIO_NORMAL 0 |
206 |
#define PRIO_LOW -1 |
207 |
#define PRIO_IDLE -3 |
208 |
#define PRIO_MIN -4 |
209 |
|
210 |
/* for Coro.pm */ |
211 |
static SV *coro_current; |
212 |
static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
213 |
static int coro_nready; |
214 |
static struct coro *coro_first; |
215 |
|
216 |
/** lowlevel stuff **********************************************************/ |
217 |
|
218 |
static AV * |
219 |
coro_clone_padlist (pTHX_ CV *cv) |
220 |
{ |
221 |
AV *padlist = CvPADLIST (cv); |
222 |
AV *newpadlist, *newpad; |
223 |
|
224 |
newpadlist = newAV (); |
225 |
AvREAL_off (newpadlist); |
226 |
#if PERL_VERSION_ATLEAST (5,9,0) |
227 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
228 |
#else |
229 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
230 |
#endif |
231 |
newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
232 |
--AvFILLp (padlist); |
233 |
|
234 |
av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
235 |
av_store (newpadlist, 1, (SV *)newpad); |
236 |
|
237 |
return newpadlist; |
238 |
} |
239 |
|
240 |
static void |
241 |
free_padlist (pTHX_ AV *padlist) |
242 |
{ |
243 |
/* may be during global destruction */ |
244 |
if (SvREFCNT (padlist)) |
245 |
{ |
246 |
I32 i = AvFILLp (padlist); |
247 |
while (i >= 0) |
248 |
{ |
249 |
SV **svp = av_fetch (padlist, i--, FALSE); |
250 |
if (svp) |
251 |
{ |
252 |
SV *sv; |
253 |
while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
254 |
SvREFCNT_dec (sv); |
255 |
|
256 |
SvREFCNT_dec (*svp); |
257 |
} |
258 |
} |
259 |
|
260 |
SvREFCNT_dec ((SV*)padlist); |
261 |
} |
262 |
} |
263 |
|
264 |
static int |
265 |
coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
266 |
{ |
267 |
AV *padlist; |
268 |
AV *av = (AV *)mg->mg_obj; |
269 |
|
270 |
/* casting is fun. */ |
271 |
while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
272 |
free_padlist (aTHX_ padlist); |
273 |
|
274 |
SvREFCNT_dec (av); |
275 |
|
276 |
return 0; |
277 |
} |
278 |
|
279 |
#define PERL_MAGIC_coro PERL_MAGIC_ext |
280 |
|
281 |
static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
282 |
|
283 |
#define CORO_MAGIC(cv) \ |
284 |
SvMAGIC (cv) \ |
285 |
? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
286 |
? SvMAGIC (cv) \ |
287 |
: mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
288 |
: 0 |
289 |
|
290 |
/* the next two functions merely cache the padlists */ |
291 |
static void |
292 |
get_padlist (pTHX_ CV *cv) |
293 |
{ |
294 |
MAGIC *mg = CORO_MAGIC (cv); |
295 |
AV *av; |
296 |
|
297 |
if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
298 |
CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
299 |
else |
300 |
{ |
301 |
#if CORO_PREFER_PERL_FUNCTIONS |
302 |
/* this is probably cleaner, but also slower? */ |
303 |
CV *cp = Perl_cv_clone (cv); |
304 |
CvPADLIST (cv) = CvPADLIST (cp); |
305 |
CvPADLIST (cp) = 0; |
306 |
SvREFCNT_dec (cp); |
307 |
#else |
308 |
CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
309 |
#endif |
310 |
} |
311 |
} |
312 |
|
313 |
static void |
314 |
put_padlist (pTHX_ CV *cv) |
315 |
{ |
316 |
MAGIC *mg = CORO_MAGIC (cv); |
317 |
AV *av; |
318 |
|
319 |
if (!mg) |
320 |
{ |
321 |
sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
322 |
mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
323 |
mg->mg_virtual = &vtbl_coro; |
324 |
mg->mg_obj = (SV *)newAV (); |
325 |
} |
326 |
|
327 |
av = (AV *)mg->mg_obj; |
328 |
|
329 |
if (AvFILLp (av) >= AvMAX (av)) |
330 |
av_extend (av, AvMAX (av) + 1); |
331 |
|
332 |
AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
333 |
} |
334 |
|
335 |
/** load & save, init *******************************************************/ |
336 |
|
337 |
#define SB do { |
338 |
#define SE } while (0) |
339 |
|
340 |
#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
341 |
|
342 |
static void |
343 |
load_perl (pTHX_ Coro__State c) |
344 |
{ |
345 |
#define VAR(name,type) PL_ ## name = c->name; |
346 |
# include "state.h" |
347 |
#undef VAR |
348 |
|
349 |
if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
350 |
if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
351 |
if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
352 |
if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh); |
353 |
|
354 |
if (c->irssv) |
355 |
{ |
356 |
if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv)) |
357 |
{ |
358 |
SvREFCNT_dec (c->irssv); |
359 |
c->irssv = 0; |
360 |
} |
361 |
else |
362 |
{ |
363 |
REPLACE_SV (PL_rs, c->irssv); |
364 |
if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0); |
365 |
sv_setsv (c->irssv_sv, PL_rs); |
366 |
} |
367 |
} |
368 |
|
369 |
{ |
370 |
dSP; |
371 |
CV *cv; |
372 |
|
373 |
/* now do the ugly restore mess */ |
374 |
while ((cv = (CV *)POPs)) |
375 |
{ |
376 |
put_padlist (aTHX_ cv); /* mark this padlist as available */ |
377 |
CvDEPTH (cv) = PTR2IV (POPs); |
378 |
CvPADLIST (cv) = (AV *)POPs; |
379 |
} |
380 |
|
381 |
PUTBACK; |
382 |
} |
383 |
} |
384 |
|
385 |
static void |
386 |
save_perl (pTHX_ Coro__State c) |
387 |
{ |
388 |
{ |
389 |
dSP; |
390 |
I32 cxix = cxstack_ix; |
391 |
PERL_CONTEXT *ccstk = cxstack; |
392 |
PERL_SI *top_si = PL_curstackinfo; |
393 |
|
394 |
/* |
395 |
* the worst thing you can imagine happens first - we have to save |
396 |
* (and reinitialize) all cv's in the whole callchain :( |
397 |
*/ |
398 |
|
399 |
XPUSHs (Nullsv); |
400 |
/* this loop was inspired by pp_caller */ |
401 |
for (;;) |
402 |
{ |
403 |
while (cxix >= 0) |
404 |
{ |
405 |
PERL_CONTEXT *cx = &ccstk[cxix--]; |
406 |
|
407 |
if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) |
408 |
{ |
409 |
CV *cv = cx->blk_sub.cv; |
410 |
|
411 |
if (CvDEPTH (cv)) |
412 |
{ |
413 |
EXTEND (SP, 3); |
414 |
PUSHs ((SV *)CvPADLIST (cv)); |
415 |
PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
416 |
PUSHs ((SV *)cv); |
417 |
|
418 |
CvDEPTH (cv) = 0; |
419 |
get_padlist (aTHX_ cv); |
420 |
} |
421 |
} |
422 |
} |
423 |
|
424 |
if (top_si->si_type == PERLSI_MAIN) |
425 |
break; |
426 |
|
427 |
top_si = top_si->si_prev; |
428 |
ccstk = top_si->si_cxstack; |
429 |
cxix = top_si->si_cxix; |
430 |
} |
431 |
|
432 |
PUTBACK; |
433 |
} |
434 |
|
435 |
c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
436 |
c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
437 |
c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
438 |
c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; |
439 |
c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; |
440 |
|
441 |
#define VAR(name,type)c->name = PL_ ## name; |
442 |
# include "state.h" |
443 |
#undef VAR |
444 |
} |
445 |
|
446 |
/* |
447 |
* allocate various perl stacks. This is an exact copy |
448 |
* of perl.c:init_stacks, except that it uses less memory |
449 |
* on the (sometimes correct) assumption that coroutines do |
450 |
* not usually need a lot of stackspace. |
451 |
*/ |
452 |
#if CORO_PREFER_PERL_FUNCTIONS |
453 |
# define coro_init_stacks init_stacks |
454 |
#else |
455 |
static void |
456 |
coro_init_stacks (pTHX) |
457 |
{ |
458 |
PL_curstackinfo = new_stackinfo(64, 6); |
459 |
PL_curstackinfo->si_type = PERLSI_MAIN; |
460 |
PL_curstack = PL_curstackinfo->si_stack; |
461 |
PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
462 |
|
463 |
PL_stack_base = AvARRAY(PL_curstack); |
464 |
PL_stack_sp = PL_stack_base; |
465 |
PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
466 |
|
467 |
New(50,PL_tmps_stack,64,SV*); |
468 |
PL_tmps_floor = -1; |
469 |
PL_tmps_ix = -1; |
470 |
PL_tmps_max = 64; |
471 |
|
472 |
New(54,PL_markstack,16,I32); |
473 |
PL_markstack_ptr = PL_markstack; |
474 |
PL_markstack_max = PL_markstack + 16; |
475 |
|
476 |
#ifdef SET_MARK_OFFSET |
477 |
SET_MARK_OFFSET; |
478 |
#endif |
479 |
|
480 |
New(54,PL_scopestack,16,I32); |
481 |
PL_scopestack_ix = 0; |
482 |
PL_scopestack_max = 16; |
483 |
|
484 |
New(54,PL_savestack,64,ANY); |
485 |
PL_savestack_ix = 0; |
486 |
PL_savestack_max = 64; |
487 |
|
488 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
489 |
New(54,PL_retstack,4,OP*); |
490 |
PL_retstack_ix = 0; |
491 |
PL_retstack_max = 4; |
492 |
#endif |
493 |
} |
494 |
#endif |
495 |
|
496 |
/* |
497 |
* destroy the stacks, the callchain etc... |
498 |
*/ |
499 |
static void |
500 |
coro_destroy_stacks (pTHX) |
501 |
{ |
502 |
if (!IN_DESTRUCT) |
503 |
{ |
504 |
/* restore all saved variables and stuff */ |
505 |
LEAVE_SCOPE (0); |
506 |
assert (PL_tmps_floor == -1); |
507 |
|
508 |
/* free all temporaries */ |
509 |
FREETMPS; |
510 |
assert (PL_tmps_ix == -1); |
511 |
|
512 |
/* unwind all extra stacks */ |
513 |
POPSTACK_TO (PL_mainstack); |
514 |
|
515 |
/* unwind main stack */ |
516 |
dounwind (-1); |
517 |
} |
518 |
|
519 |
while (PL_curstackinfo->si_next) |
520 |
PL_curstackinfo = PL_curstackinfo->si_next; |
521 |
|
522 |
while (PL_curstackinfo) |
523 |
{ |
524 |
PERL_SI *p = PL_curstackinfo->si_prev; |
525 |
|
526 |
if (!IN_DESTRUCT) |
527 |
SvREFCNT_dec (PL_curstackinfo->si_stack); |
528 |
|
529 |
Safefree (PL_curstackinfo->si_cxstack); |
530 |
Safefree (PL_curstackinfo); |
531 |
PL_curstackinfo = p; |
532 |
} |
533 |
|
534 |
Safefree (PL_tmps_stack); |
535 |
Safefree (PL_markstack); |
536 |
Safefree (PL_scopestack); |
537 |
Safefree (PL_savestack); |
538 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
539 |
Safefree (PL_retstack); |
540 |
#endif |
541 |
} |
542 |
|
543 |
static size_t |
544 |
coro_rss (struct coro *coro) |
545 |
{ |
546 |
size_t rss = sizeof (coro); |
547 |
|
548 |
if (coro->mainstack) |
549 |
{ |
550 |
if (coro->flags & CF_RUNNING) |
551 |
{ |
552 |
#define VAR(name,type)coro->name = PL_ ## name; |
553 |
# include "state.h" |
554 |
#undef VAR |
555 |
} |
556 |
|
557 |
rss += sizeof (coro->curstackinfo); |
558 |
rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); |
559 |
rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); |
560 |
rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); |
561 |
rss += coro->tmps_max * sizeof (SV *); |
562 |
rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); |
563 |
rss += coro->scopestack_max * sizeof (I32); |
564 |
rss += coro->savestack_max * sizeof (ANY); |
565 |
|
566 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
567 |
rss += coro->retstack_max * sizeof (OP *); |
568 |
#endif |
569 |
} |
570 |
|
571 |
return rss; |
572 |
} |
573 |
|
574 |
/** coroutine stack handling ************************************************/ |
575 |
|
576 |
static void |
577 |
setup_coro (pTHX_ struct coro *coro) |
578 |
{ |
579 |
/* |
580 |
* emulate part of the perl startup here. |
581 |
*/ |
582 |
coro_init_stacks (aTHX); |
583 |
|
584 |
PL_curcop = &PL_compiling; |
585 |
PL_in_eval = EVAL_NULL; |
586 |
PL_comppad = 0; |
587 |
PL_curpm = 0; |
588 |
PL_localizing = 0; |
589 |
PL_dirty = 0; |
590 |
PL_restartop = 0; |
591 |
|
592 |
{ |
593 |
dSP; |
594 |
LOGOP myop; |
595 |
|
596 |
SvREFCNT_dec (GvAV (PL_defgv)); |
597 |
GvAV (PL_defgv) = coro->args; coro->args = 0; |
598 |
|
599 |
Zero (&myop, 1, LOGOP); |
600 |
myop.op_next = Nullop; |
601 |
myop.op_flags = OPf_WANT_VOID; |
602 |
|
603 |
PUSHMARK (SP); |
604 |
XPUSHs (av_shift (GvAV (PL_defgv))); |
605 |
PUTBACK; |
606 |
PL_op = (OP *)&myop; |
607 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
608 |
SPAGAIN; |
609 |
} |
610 |
|
611 |
ENTER; /* necessary e.g. for dounwind */ |
612 |
} |
613 |
|
614 |
static void |
615 |
free_coro_mortal (pTHX) |
616 |
{ |
617 |
if (coro_mortal) |
618 |
{ |
619 |
SvREFCNT_dec (coro_mortal); |
620 |
coro_mortal = 0; |
621 |
} |
622 |
} |
623 |
|
624 |
/* inject a fake call to Coro::State::_cctx_init into the execution */ |
625 |
/* _cctx_init should be careful, as it could be called at almost any time */ |
626 |
/* during execution of a perl program */ |
627 |
static void NOINLINE |
628 |
prepare_cctx (pTHX_ coro_cctx *cctx) |
629 |
{ |
630 |
dSP; |
631 |
LOGOP myop; |
632 |
|
633 |
Zero (&myop, 1, LOGOP); |
634 |
myop.op_next = PL_op; |
635 |
myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
636 |
|
637 |
PUSHMARK (SP); |
638 |
EXTEND (SP, 2); |
639 |
PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
640 |
PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
641 |
PUTBACK; |
642 |
PL_op = (OP *)&myop; |
643 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
644 |
SPAGAIN; |
645 |
} |
646 |
|
647 |
/* |
648 |
* this is a _very_ stripped down perl interpreter ;) |
649 |
*/ |
650 |
static void |
651 |
coro_run (void *arg) |
652 |
{ |
653 |
dTHX; |
654 |
|
655 |
/* coro_run is the alternative tail of transfer(), so unlock here. */ |
656 |
UNLOCK; |
657 |
|
658 |
PL_top_env = &PL_start_env; |
659 |
|
660 |
/* inject a fake subroutine call to cctx_init */ |
661 |
prepare_cctx (aTHX_ (coro_cctx *)arg); |
662 |
|
663 |
/* somebody or something will hit me for both perl_run and PL_restartop */ |
664 |
PL_restartop = PL_op; |
665 |
perl_run (PL_curinterp); |
666 |
|
667 |
/* |
668 |
* If perl-run returns we assume exit() was being called or the coro |
669 |
* fell off the end, which seems to be the only valid (non-bug) |
670 |
* reason for perl_run to return. We try to exit by jumping to the |
671 |
* bootstrap-time "top" top_env, as we cannot restore the "main" |
672 |
* coroutine as Coro has no such concept |
673 |
*/ |
674 |
PL_top_env = main_top_env; |
675 |
JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
676 |
} |
677 |
|
678 |
static coro_cctx * |
679 |
cctx_new () |
680 |
{ |
681 |
coro_cctx *cctx; |
682 |
void *stack_start; |
683 |
size_t stack_size; |
684 |
|
685 |
++cctx_count; |
686 |
|
687 |
Newz (0, cctx, 1, coro_cctx); |
688 |
|
689 |
#if HAVE_MMAP |
690 |
|
691 |
cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
692 |
/* mmap supposedly does allocate-on-write for us */ |
693 |
cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
694 |
|
695 |
if (cctx->sptr != (void *)-1) |
696 |
{ |
697 |
# if CORO_STACKGUARD |
698 |
mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
699 |
# endif |
700 |
stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; |
701 |
stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
702 |
cctx->mapped = 1; |
703 |
} |
704 |
else |
705 |
#endif |
706 |
{ |
707 |
cctx->ssize = coro_stacksize * (long)sizeof (long); |
708 |
New (0, cctx->sptr, coro_stacksize, long); |
709 |
|
710 |
if (!cctx->sptr) |
711 |
{ |
712 |
perror ("FATAL: unable to allocate stack for coroutine"); |
713 |
_exit (EXIT_FAILURE); |
714 |
} |
715 |
|
716 |
stack_start = cctx->sptr; |
717 |
stack_size = cctx->ssize; |
718 |
} |
719 |
|
720 |
REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); |
721 |
coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); |
722 |
|
723 |
return cctx; |
724 |
} |
725 |
|
726 |
static void |
727 |
cctx_destroy (coro_cctx *cctx) |
728 |
{ |
729 |
if (!cctx) |
730 |
return; |
731 |
|
732 |
--cctx_count; |
733 |
|
734 |
#if CORO_USE_VALGRIND |
735 |
VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
736 |
#endif |
737 |
|
738 |
#if HAVE_MMAP |
739 |
if (cctx->mapped) |
740 |
munmap (cctx->sptr, cctx->ssize); |
741 |
else |
742 |
#endif |
743 |
Safefree (cctx->sptr); |
744 |
|
745 |
Safefree (cctx); |
746 |
} |
747 |
|
748 |
static coro_cctx * |
749 |
cctx_get (pTHX) |
750 |
{ |
751 |
while (cctx_first) |
752 |
{ |
753 |
coro_cctx *cctx = cctx_first; |
754 |
cctx_first = cctx->next; |
755 |
--cctx_idle; |
756 |
|
757 |
if (cctx->ssize >= coro_stacksize) |
758 |
return cctx; |
759 |
|
760 |
cctx_destroy (cctx); |
761 |
} |
762 |
|
763 |
PL_op = PL_op->op_next; |
764 |
return cctx_new (); |
765 |
} |
766 |
|
767 |
static void |
768 |
cctx_put (coro_cctx *cctx) |
769 |
{ |
770 |
/* free another cctx if overlimit */ |
771 |
if (cctx_idle >= MAX_IDLE_CCTX) |
772 |
{ |
773 |
coro_cctx *first = cctx_first; |
774 |
cctx_first = first->next; |
775 |
--cctx_idle; |
776 |
|
777 |
assert (!first->inuse); |
778 |
cctx_destroy (first); |
779 |
} |
780 |
|
781 |
++cctx_idle; |
782 |
cctx->next = cctx_first; |
783 |
cctx_first = cctx; |
784 |
} |
785 |
|
786 |
/** coroutine switching *****************************************************/ |
787 |
|
788 |
/* never call directly, always through the coro_state_transfer global variable */ |
789 |
static void NOINLINE |
790 |
transfer (pTHX_ struct coro *prev, struct coro *next) |
791 |
{ |
792 |
dSTACKLEVEL; |
793 |
|
794 |
/* sometimes transfer is only called to set idle_sp */ |
795 |
if (!next) |
796 |
{ |
797 |
((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
798 |
assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
799 |
} |
800 |
else if (prev != next) |
801 |
{ |
802 |
coro_cctx *prev__cctx; |
803 |
|
804 |
if (prev->flags & CF_NEW) |
805 |
{ |
806 |
/* create a new empty context */ |
807 |
Newz (0, prev->cctx, 1, coro_cctx); |
808 |
prev->cctx->inuse = 1; |
809 |
prev->flags &= ~CF_NEW; |
810 |
prev->flags |= CF_RUNNING; |
811 |
} |
812 |
|
813 |
/*TODO: must not croak here */ |
814 |
if (!prev->flags & CF_RUNNING) |
815 |
croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
816 |
|
817 |
if (next->flags & CF_RUNNING) |
818 |
croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
819 |
|
820 |
if (next->flags & CF_DESTROYED) |
821 |
croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
822 |
|
823 |
prev->flags &= ~CF_RUNNING; |
824 |
next->flags |= CF_RUNNING; |
825 |
|
826 |
LOCK; |
827 |
|
828 |
if (next->flags & CF_NEW) |
829 |
{ |
830 |
/* need to start coroutine */ |
831 |
next->flags &= ~CF_NEW; |
832 |
/* first get rid of the old state */ |
833 |
save_perl (aTHX_ prev); |
834 |
/* setup coroutine call */ |
835 |
setup_coro (aTHX_ next); |
836 |
/* need a new stack */ |
837 |
assert (!next->cctx); |
838 |
} |
839 |
else |
840 |
{ |
841 |
/* coroutine already started */ |
842 |
save_perl (aTHX_ prev); |
843 |
load_perl (aTHX_ next); |
844 |
} |
845 |
|
846 |
prev__cctx = prev->cctx; |
847 |
|
848 |
/* possibly "free" the cctx */ |
849 |
if (prev__cctx->idle_sp == STACKLEVEL) |
850 |
{ |
851 |
/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
852 |
assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
853 |
|
854 |
prev->cctx = 0; |
855 |
|
856 |
cctx_put (prev__cctx); |
857 |
prev__cctx->inuse = 0; |
858 |
} |
859 |
|
860 |
if (!next->cctx) |
861 |
{ |
862 |
next->cctx = cctx_get (aTHX); |
863 |
assert (!next->cctx->inuse); |
864 |
next->cctx->inuse = 1; |
865 |
} |
866 |
|
867 |
if (prev__cctx != next->cctx) |
868 |
{ |
869 |
prev__cctx->top_env = PL_top_env; |
870 |
PL_top_env = next->cctx->top_env; |
871 |
coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
872 |
} |
873 |
|
874 |
free_coro_mortal (aTHX); |
875 |
UNLOCK; |
876 |
} |
877 |
} |
878 |
|
879 |
struct transfer_args |
880 |
{ |
881 |
struct coro *prev, *next; |
882 |
}; |
883 |
|
884 |
#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) |
885 |
|
886 |
/** high level stuff ********************************************************/ |
887 |
|
888 |
static int |
889 |
coro_state_destroy (pTHX_ struct coro *coro) |
890 |
{ |
891 |
if (coro->flags & CF_DESTROYED) |
892 |
return 0; |
893 |
|
894 |
coro->flags |= CF_DESTROYED; |
895 |
|
896 |
if (coro->flags & CF_READY) |
897 |
{ |
898 |
/* reduce nready, as destroying a ready coro effectively unreadies it */ |
899 |
/* alternative: look through all ready queues and remove the coro */ |
900 |
LOCK; |
901 |
--coro_nready; |
902 |
UNLOCK; |
903 |
} |
904 |
else |
905 |
coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
906 |
|
907 |
if (coro->mainstack && coro->mainstack != main_mainstack) |
908 |
{ |
909 |
struct coro temp; |
910 |
|
911 |
assert (!(coro->flags & CF_RUNNING)); |
912 |
|
913 |
Zero (&temp, 1, struct coro); |
914 |
temp.save = CORO_SAVE_ALL; |
915 |
|
916 |
if (coro->flags & CF_RUNNING) |
917 |
croak ("FATAL: tried to destroy currently running coroutine"); |
918 |
|
919 |
save_perl (aTHX_ &temp); |
920 |
load_perl (aTHX_ coro); |
921 |
|
922 |
coro_destroy_stacks (aTHX); |
923 |
|
924 |
load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ |
925 |
|
926 |
coro->mainstack = 0; |
927 |
} |
928 |
|
929 |
cctx_destroy (coro->cctx); |
930 |
SvREFCNT_dec (coro->args); |
931 |
|
932 |
if (coro->next) coro->next->prev = coro->prev; |
933 |
if (coro->prev) coro->prev->next = coro->next; |
934 |
if (coro == coro_first) coro_first = coro->next; |
935 |
|
936 |
return 1; |
937 |
} |
938 |
|
939 |
static int |
940 |
coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
941 |
{ |
942 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
943 |
mg->mg_ptr = 0; |
944 |
|
945 |
coro->hv = 0; |
946 |
|
947 |
if (--coro->refcnt < 0) |
948 |
{ |
949 |
coro_state_destroy (aTHX_ coro); |
950 |
Safefree (coro); |
951 |
} |
952 |
|
953 |
return 0; |
954 |
} |
955 |
|
956 |
static int |
957 |
coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
958 |
{ |
959 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
960 |
|
961 |
++coro->refcnt; |
962 |
|
963 |
return 0; |
964 |
} |
965 |
|
966 |
static MGVTBL coro_state_vtbl = { |
967 |
0, 0, 0, 0, |
968 |
coro_state_free, |
969 |
0, |
970 |
#ifdef MGf_DUP |
971 |
coro_state_dup, |
972 |
#else |
973 |
# define MGf_DUP 0 |
974 |
#endif |
975 |
}; |
976 |
|
977 |
static struct coro * |
978 |
SvSTATE_ (pTHX_ SV *coro) |
979 |
{ |
980 |
HV *stash; |
981 |
MAGIC *mg; |
982 |
|
983 |
if (SvROK (coro)) |
984 |
coro = SvRV (coro); |
985 |
|
986 |
stash = SvSTASH (coro); |
987 |
if (stash != coro_stash && stash != coro_state_stash) |
988 |
{ |
989 |
/* very slow, but rare, check */ |
990 |
if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
991 |
croak ("Coro::State object required"); |
992 |
} |
993 |
|
994 |
mg = CORO_MAGIC (coro); |
995 |
return (struct coro *)mg->mg_ptr; |
996 |
} |
997 |
|
998 |
#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
999 |
|
1000 |
static void |
1001 |
prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
1002 |
{ |
1003 |
ta->prev = SvSTATE (prev_sv); |
1004 |
ta->next = SvSTATE (next_sv); |
1005 |
} |
1006 |
|
1007 |
static void |
1008 |
api_transfer (SV *prev_sv, SV *next_sv) |
1009 |
{ |
1010 |
dTHX; |
1011 |
struct transfer_args ta; |
1012 |
|
1013 |
prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1014 |
TRANSFER (ta); |
1015 |
} |
1016 |
|
1017 |
static int |
1018 |
api_save (SV *coro_sv, int new_save) |
1019 |
{ |
1020 |
dTHX; |
1021 |
struct coro *coro = SvSTATE (coro_sv); |
1022 |
int old_save = coro->save; |
1023 |
|
1024 |
if (new_save >= 0) |
1025 |
coro->save = new_save; |
1026 |
|
1027 |
return old_save; |
1028 |
} |
1029 |
|
1030 |
/** Coro ********************************************************************/ |
1031 |
|
1032 |
static void |
1033 |
coro_enq (pTHX_ SV *coro_sv) |
1034 |
{ |
1035 |
av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
1036 |
} |
1037 |
|
1038 |
static SV * |
1039 |
coro_deq (pTHX_ int min_prio) |
1040 |
{ |
1041 |
int prio = PRIO_MAX - PRIO_MIN; |
1042 |
|
1043 |
min_prio -= PRIO_MIN; |
1044 |
if (min_prio < 0) |
1045 |
min_prio = 0; |
1046 |
|
1047 |
for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
1048 |
if (AvFILLp (coro_ready [prio]) >= 0) |
1049 |
return av_shift (coro_ready [prio]); |
1050 |
|
1051 |
return 0; |
1052 |
} |
1053 |
|
1054 |
static int |
1055 |
api_ready (SV *coro_sv) |
1056 |
{ |
1057 |
dTHX; |
1058 |
struct coro *coro; |
1059 |
|
1060 |
if (SvROK (coro_sv)) |
1061 |
coro_sv = SvRV (coro_sv); |
1062 |
|
1063 |
coro = SvSTATE (coro_sv); |
1064 |
|
1065 |
if (coro->flags & CF_READY) |
1066 |
return 0; |
1067 |
|
1068 |
coro->flags |= CF_READY; |
1069 |
|
1070 |
LOCK; |
1071 |
coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); |
1072 |
++coro_nready; |
1073 |
UNLOCK; |
1074 |
|
1075 |
return 1; |
1076 |
} |
1077 |
|
1078 |
static int |
1079 |
api_is_ready (SV *coro_sv) |
1080 |
{ |
1081 |
dTHX; |
1082 |
return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1083 |
} |
1084 |
|
1085 |
static void |
1086 |
prepare_schedule (pTHX_ struct transfer_args *ta) |
1087 |
{ |
1088 |
SV *prev_sv, *next_sv; |
1089 |
|
1090 |
for (;;) |
1091 |
{ |
1092 |
LOCK; |
1093 |
next_sv = coro_deq (aTHX_ PRIO_MIN); |
1094 |
|
1095 |
/* nothing to schedule: call the idle handler */ |
1096 |
if (!next_sv) |
1097 |
{ |
1098 |
dSP; |
1099 |
UNLOCK; |
1100 |
|
1101 |
ENTER; |
1102 |
SAVETMPS; |
1103 |
|
1104 |
PUSHMARK (SP); |
1105 |
PUTBACK; |
1106 |
call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
1107 |
|
1108 |
FREETMPS; |
1109 |
LEAVE; |
1110 |
continue; |
1111 |
} |
1112 |
|
1113 |
ta->next = SvSTATE (next_sv); |
1114 |
|
1115 |
/* cannot transfer to destroyed coros, skip and look for next */ |
1116 |
if (ta->next->flags & CF_DESTROYED) |
1117 |
{ |
1118 |
UNLOCK; |
1119 |
SvREFCNT_dec (next_sv); |
1120 |
/* coro_nready is already taken care of by destroy */ |
1121 |
continue; |
1122 |
} |
1123 |
|
1124 |
--coro_nready; |
1125 |
UNLOCK; |
1126 |
break; |
1127 |
} |
1128 |
|
1129 |
/* free this only after the transfer */ |
1130 |
prev_sv = SvRV (coro_current); |
1131 |
SvRV_set (coro_current, next_sv); |
1132 |
ta->prev = SvSTATE (prev_sv); |
1133 |
|
1134 |
assert (ta->next->flags & CF_READY); |
1135 |
ta->next->flags &= ~CF_READY; |
1136 |
|
1137 |
LOCK; |
1138 |
free_coro_mortal (aTHX); |
1139 |
coro_mortal = prev_sv; |
1140 |
UNLOCK; |
1141 |
} |
1142 |
|
1143 |
static void |
1144 |
prepare_cede (pTHX_ struct transfer_args *ta) |
1145 |
{ |
1146 |
api_ready (coro_current); |
1147 |
prepare_schedule (aTHX_ ta); |
1148 |
} |
1149 |
|
1150 |
static int |
1151 |
prepare_cede_notself (pTHX_ struct transfer_args *ta) |
1152 |
{ |
1153 |
if (coro_nready) |
1154 |
{ |
1155 |
SV *prev = SvRV (coro_current); |
1156 |
prepare_schedule (aTHX_ ta); |
1157 |
api_ready (prev); |
1158 |
return 1; |
1159 |
} |
1160 |
else |
1161 |
return 0; |
1162 |
} |
1163 |
|
1164 |
static void |
1165 |
api_schedule (void) |
1166 |
{ |
1167 |
dTHX; |
1168 |
struct transfer_args ta; |
1169 |
|
1170 |
prepare_schedule (aTHX_ &ta); |
1171 |
TRANSFER (ta); |
1172 |
} |
1173 |
|
1174 |
static int |
1175 |
api_cede (void) |
1176 |
{ |
1177 |
dTHX; |
1178 |
struct transfer_args ta; |
1179 |
|
1180 |
prepare_cede (aTHX_ &ta); |
1181 |
|
1182 |
if (ta.prev != ta.next) |
1183 |
{ |
1184 |
TRANSFER (ta); |
1185 |
return 1; |
1186 |
} |
1187 |
else |
1188 |
return 0; |
1189 |
} |
1190 |
|
1191 |
static int |
1192 |
api_cede_notself (void) |
1193 |
{ |
1194 |
dTHX; |
1195 |
struct transfer_args ta; |
1196 |
|
1197 |
if (prepare_cede_notself (aTHX_ &ta)) |
1198 |
{ |
1199 |
TRANSFER (ta); |
1200 |
return 1; |
1201 |
} |
1202 |
else |
1203 |
return 0; |
1204 |
} |
1205 |
|
1206 |
MODULE = Coro::State PACKAGE = Coro::State |
1207 |
|
1208 |
PROTOTYPES: DISABLE |
1209 |
|
1210 |
BOOT: |
1211 |
{ |
1212 |
#ifdef USE_ITHREADS |
1213 |
MUTEX_INIT (&coro_mutex); |
1214 |
#endif |
1215 |
BOOT_PAGESIZE; |
1216 |
|
1217 |
coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1218 |
|
1219 |
newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); |
1220 |
newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); |
1221 |
newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV)); |
1222 |
newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV)); |
1223 |
newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH)); |
1224 |
newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); |
1225 |
newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); |
1226 |
|
1227 |
main_mainstack = PL_mainstack; |
1228 |
main_top_env = PL_top_env; |
1229 |
|
1230 |
while (main_top_env->je_prev) |
1231 |
main_top_env = main_top_env->je_prev; |
1232 |
|
1233 |
coroapi.ver = CORO_API_VERSION; |
1234 |
coroapi.transfer = api_transfer; |
1235 |
|
1236 |
assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1237 |
} |
1238 |
|
1239 |
SV * |
1240 |
new (char *klass, ...) |
1241 |
CODE: |
1242 |
{ |
1243 |
struct coro *coro; |
1244 |
HV *hv; |
1245 |
int i; |
1246 |
|
1247 |
Newz (0, coro, 1, struct coro); |
1248 |
coro->args = newAV (); |
1249 |
coro->save = CORO_SAVE_DEF; |
1250 |
coro->flags = CF_NEW; |
1251 |
|
1252 |
if (coro_first) coro_first->prev = coro; |
1253 |
coro->next = coro_first; |
1254 |
coro_first = coro; |
1255 |
|
1256 |
coro->hv = hv = newHV (); |
1257 |
sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1258 |
RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1259 |
|
1260 |
for (i = 1; i < items; i++) |
1261 |
av_push (coro->args, newSVsv (ST (i))); |
1262 |
} |
1263 |
OUTPUT: |
1264 |
RETVAL |
1265 |
|
1266 |
int |
1267 |
save (SV *coro, int new_save = -1) |
1268 |
CODE: |
1269 |
RETVAL = api_save (coro, new_save); |
1270 |
OUTPUT: |
1271 |
RETVAL |
1272 |
|
1273 |
int |
1274 |
save_also (SV *coro_sv, int save_also) |
1275 |
CODE: |
1276 |
{ |
1277 |
struct coro *coro = SvSTATE (coro_sv); |
1278 |
RETVAL = coro->save; |
1279 |
coro->save |= save_also; |
1280 |
} |
1281 |
OUTPUT: |
1282 |
RETVAL |
1283 |
|
1284 |
void |
1285 |
_set_stacklevel (...) |
1286 |
ALIAS: |
1287 |
Coro::State::transfer = 1 |
1288 |
Coro::schedule = 2 |
1289 |
Coro::cede = 3 |
1290 |
Coro::cede_notself = 4 |
1291 |
CODE: |
1292 |
{ |
1293 |
struct transfer_args ta; |
1294 |
|
1295 |
switch (ix) |
1296 |
{ |
1297 |
case 0: |
1298 |
ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1299 |
ta.next = 0; |
1300 |
break; |
1301 |
|
1302 |
case 1: |
1303 |
if (items != 2) |
1304 |
croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
1305 |
|
1306 |
prepare_transfer (aTHX_ &ta, ST (0), ST (1)); |
1307 |
break; |
1308 |
|
1309 |
case 2: |
1310 |
prepare_schedule (aTHX_ &ta); |
1311 |
break; |
1312 |
|
1313 |
case 3: |
1314 |
prepare_cede (aTHX_ &ta); |
1315 |
break; |
1316 |
|
1317 |
case 4: |
1318 |
if (!prepare_cede_notself (aTHX_ &ta)) |
1319 |
XSRETURN_EMPTY; |
1320 |
|
1321 |
break; |
1322 |
} |
1323 |
|
1324 |
BARRIER; |
1325 |
TRANSFER (ta); |
1326 |
|
1327 |
if (GIMME_V != G_VOID && ta.next != ta.prev) |
1328 |
XSRETURN_YES; |
1329 |
} |
1330 |
|
1331 |
bool |
1332 |
_destroy (SV *coro_sv) |
1333 |
CODE: |
1334 |
RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
1335 |
OUTPUT: |
1336 |
RETVAL |
1337 |
|
1338 |
void |
1339 |
_exit (code) |
1340 |
int code |
1341 |
PROTOTYPE: $ |
1342 |
CODE: |
1343 |
_exit (code); |
1344 |
|
1345 |
int |
1346 |
cctx_stacksize (int new_stacksize = 0) |
1347 |
CODE: |
1348 |
RETVAL = coro_stacksize; |
1349 |
if (new_stacksize) |
1350 |
coro_stacksize = new_stacksize; |
1351 |
OUTPUT: |
1352 |
RETVAL |
1353 |
|
1354 |
int |
1355 |
cctx_count () |
1356 |
CODE: |
1357 |
RETVAL = cctx_count; |
1358 |
OUTPUT: |
1359 |
RETVAL |
1360 |
|
1361 |
int |
1362 |
cctx_idle () |
1363 |
CODE: |
1364 |
RETVAL = cctx_idle; |
1365 |
OUTPUT: |
1366 |
RETVAL |
1367 |
|
1368 |
void |
1369 |
list () |
1370 |
PPCODE: |
1371 |
{ |
1372 |
struct coro *coro; |
1373 |
for (coro = coro_first; coro; coro = coro->next) |
1374 |
if (coro->hv) |
1375 |
XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
1376 |
} |
1377 |
|
1378 |
void |
1379 |
_eval (Coro::State coro, SV *coderef) |
1380 |
CODE: |
1381 |
{ |
1382 |
if (coro->mainstack) |
1383 |
{ |
1384 |
struct coro temp; |
1385 |
Zero (&temp, 1, struct coro); |
1386 |
temp.save = CORO_SAVE_ALL; |
1387 |
|
1388 |
if (!(coro->flags & CF_RUNNING)) |
1389 |
{ |
1390 |
save_perl (aTHX_ &temp); |
1391 |
load_perl (aTHX_ coro); |
1392 |
} |
1393 |
|
1394 |
{ |
1395 |
dSP; |
1396 |
ENTER; |
1397 |
SAVETMPS; |
1398 |
PUSHMARK (SP); |
1399 |
PUTBACK; |
1400 |
call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1401 |
SPAGAIN; |
1402 |
FREETMPS; |
1403 |
LEAVE; |
1404 |
PUTBACK; |
1405 |
} |
1406 |
|
1407 |
if (!(coro->flags & CF_RUNNING)) |
1408 |
{ |
1409 |
save_perl (aTHX_ coro); |
1410 |
load_perl (aTHX_ &temp); |
1411 |
} |
1412 |
} |
1413 |
} |
1414 |
|
1415 |
SV * |
1416 |
is_ready (Coro::State coro) |
1417 |
PROTOTYPE: $ |
1418 |
ALIAS: |
1419 |
is_ready = CF_READY |
1420 |
is_running = CF_RUNNING |
1421 |
is_new = CF_NEW |
1422 |
is_destroyed = CF_DESTROYED |
1423 |
CODE: |
1424 |
RETVAL = boolSV (coro->flags & ix); |
1425 |
OUTPUT: |
1426 |
RETVAL |
1427 |
|
1428 |
IV |
1429 |
rss (Coro::State coro) |
1430 |
PROTOTYPE: $ |
1431 |
CODE: |
1432 |
RETVAL = coro_rss (coro); |
1433 |
OUTPUT: |
1434 |
RETVAL |
1435 |
|
1436 |
|
1437 |
MODULE = Coro::State PACKAGE = Coro |
1438 |
|
1439 |
BOOT: |
1440 |
{ |
1441 |
int i; |
1442 |
|
1443 |
coro_stash = gv_stashpv ("Coro", TRUE); |
1444 |
|
1445 |
newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1446 |
newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1447 |
newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1448 |
newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1449 |
newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1450 |
newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1451 |
|
1452 |
coro_current = get_sv ("Coro::current", FALSE); |
1453 |
SvREADONLY_on (coro_current); |
1454 |
|
1455 |
for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1456 |
coro_ready[i] = newAV (); |
1457 |
|
1458 |
{ |
1459 |
SV *sv = perl_get_sv("Coro::API", 1); |
1460 |
|
1461 |
coroapi.schedule = api_schedule; |
1462 |
coroapi.save = api_save; |
1463 |
coroapi.cede = api_cede; |
1464 |
coroapi.cede_notself = api_cede_notself; |
1465 |
coroapi.ready = api_ready; |
1466 |
coroapi.is_ready = api_is_ready; |
1467 |
coroapi.nready = &coro_nready; |
1468 |
coroapi.current = coro_current; |
1469 |
|
1470 |
GCoroAPI = &coroapi; |
1471 |
sv_setiv (sv, (IV)&coroapi); |
1472 |
SvREADONLY_on (sv); |
1473 |
} |
1474 |
} |
1475 |
|
1476 |
void |
1477 |
_set_current (SV *current) |
1478 |
PROTOTYPE: $ |
1479 |
CODE: |
1480 |
SvREFCNT_dec (SvRV (coro_current)); |
1481 |
SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
1482 |
|
1483 |
int |
1484 |
prio (Coro::State coro, int newprio = 0) |
1485 |
ALIAS: |
1486 |
nice = 1 |
1487 |
CODE: |
1488 |
{ |
1489 |
RETVAL = coro->prio; |
1490 |
|
1491 |
if (items > 1) |
1492 |
{ |
1493 |
if (ix) |
1494 |
newprio = coro->prio - newprio; |
1495 |
|
1496 |
if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1497 |
if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1498 |
|
1499 |
coro->prio = newprio; |
1500 |
} |
1501 |
} |
1502 |
OUTPUT: |
1503 |
RETVAL |
1504 |
|
1505 |
SV * |
1506 |
ready (SV *self) |
1507 |
PROTOTYPE: $ |
1508 |
CODE: |
1509 |
RETVAL = boolSV (api_ready (self)); |
1510 |
OUTPUT: |
1511 |
RETVAL |
1512 |
|
1513 |
int |
1514 |
nready (...) |
1515 |
PROTOTYPE: |
1516 |
CODE: |
1517 |
RETVAL = coro_nready; |
1518 |
OUTPUT: |
1519 |
RETVAL |
1520 |
|
1521 |
MODULE = Coro::State PACKAGE = Coro::AIO |
1522 |
|
1523 |
SV * |
1524 |
_get_state () |
1525 |
CODE: |
1526 |
{ |
1527 |
struct io_state *data; |
1528 |
|
1529 |
RETVAL = newSV (sizeof (struct io_state)); |
1530 |
data = (struct io_state *)SvPVX (RETVAL); |
1531 |
SvCUR_set (RETVAL, sizeof (struct io_state)); |
1532 |
SvPOK_only (RETVAL); |
1533 |
|
1534 |
data->errorno = errno; |
1535 |
data->laststype = PL_laststype; |
1536 |
data->laststatval = PL_laststatval; |
1537 |
data->statcache = PL_statcache; |
1538 |
} |
1539 |
OUTPUT: |
1540 |
RETVAL |
1541 |
|
1542 |
void |
1543 |
_set_state (char *data_) |
1544 |
PROTOTYPE: $ |
1545 |
CODE: |
1546 |
{ |
1547 |
struct io_state *data = (void *)data_; |
1548 |
|
1549 |
errno = data->errorno; |
1550 |
PL_laststype = data->laststype; |
1551 |
PL_laststatval = data->laststatval; |
1552 |
PL_statcache = data->statcache; |
1553 |
} |
1554 |
|