1 |
#include "libcoro/coro.c" |
2 |
|
3 |
#define PERL_NO_GET_CONTEXT |
4 |
#define PERL_EXT |
5 |
|
6 |
#include "EXTERN.h" |
7 |
#include "perl.h" |
8 |
#include "XSUB.h" |
9 |
#include "perliol.h" |
10 |
|
11 |
#include "patchlevel.h" |
12 |
|
13 |
#include <stdio.h> |
14 |
#include <errno.h> |
15 |
#include <assert.h> |
16 |
|
17 |
#ifdef WIN32 |
18 |
# undef setjmp |
19 |
# undef longjmp |
20 |
# undef _exit |
21 |
# define setjmp _setjmp /* deep magic */ |
22 |
#else |
23 |
# include <inttypes.h> /* most portable stdint.h */ |
24 |
#endif |
25 |
|
26 |
#ifdef HAVE_MMAP |
27 |
# include <unistd.h> |
28 |
# include <sys/mman.h> |
29 |
# ifndef MAP_ANONYMOUS |
30 |
# ifdef MAP_ANON |
31 |
# define MAP_ANONYMOUS MAP_ANON |
32 |
# else |
33 |
# undef HAVE_MMAP |
34 |
# endif |
35 |
# endif |
36 |
# include <limits.h> |
37 |
# ifndef PAGESIZE |
38 |
# define PAGESIZE pagesize |
39 |
# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
40 |
static long pagesize; |
41 |
# else |
42 |
# define BOOT_PAGESIZE (void)0 |
43 |
# endif |
44 |
#else |
45 |
# define PAGESIZE 0 |
46 |
# define BOOT_PAGESIZE (void)0 |
47 |
#endif |
48 |
|
49 |
#if CORO_USE_VALGRIND |
50 |
# include <valgrind/valgrind.h> |
51 |
#endif |
52 |
|
53 |
/* the maximum number of idle cctx that will be pooled */ |
54 |
static int cctx_max_idle = 4; |
55 |
|
56 |
#define PERL_VERSION_ATLEAST(a,b,c) \ |
57 |
(PERL_REVISION > (a) \ |
58 |
|| (PERL_REVISION == (a) \ |
59 |
&& (PERL_VERSION > (b) \ |
60 |
|| (PERL_VERSION == (b) && PERL_SUBVERSION >= (c))))) |
61 |
|
62 |
#if !PERL_VERSION_ATLEAST (5,6,0) |
63 |
# ifndef PL_ppaddr |
64 |
# define PL_ppaddr ppaddr |
65 |
# endif |
66 |
# ifndef call_sv |
67 |
# define call_sv perl_call_sv |
68 |
# endif |
69 |
# ifndef get_sv |
70 |
# define get_sv perl_get_sv |
71 |
# endif |
72 |
# ifndef get_cv |
73 |
# define get_cv perl_get_cv |
74 |
# endif |
75 |
# ifndef IS_PADGV |
76 |
# define IS_PADGV(v) 0 |
77 |
# endif |
78 |
# ifndef IS_PADCONST |
79 |
# define IS_PADCONST(v) 0 |
80 |
# endif |
81 |
#endif |
82 |
|
83 |
/* 5.11 */ |
84 |
#ifndef CxHASARGS |
85 |
# define CxHASARGS(cx) (cx)->blk_sub.hasargs |
86 |
#endif |
87 |
|
88 |
/* 5.10.0 */ |
89 |
#ifndef SvREFCNT_inc_NN |
90 |
# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) |
91 |
#endif |
92 |
|
93 |
/* 5.8.8 */ |
94 |
#ifndef GV_NOTQUAL |
95 |
# define GV_NOTQUAL 0 |
96 |
#endif |
97 |
#ifndef newSV |
98 |
# define newSV(l) NEWSV(0,l) |
99 |
#endif |
100 |
#ifndef CvISXSUB_on |
101 |
# define CvISXSUB_on(cv) (void)cv |
102 |
#endif |
103 |
|
104 |
/* 5.8.7 */ |
105 |
#ifndef SvRV_set |
106 |
# define SvRV_set(s,v) SvRV(s) = (v) |
107 |
#endif |
108 |
|
109 |
#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
110 |
# undef CORO_STACKGUARD |
111 |
#endif |
112 |
|
113 |
#ifndef CORO_STACKGUARD |
114 |
# define CORO_STACKGUARD 0 |
115 |
#endif |
116 |
|
117 |
/* prefer perl internal functions over our own? */ |
118 |
#ifndef CORO_PREFER_PERL_FUNCTIONS |
119 |
# define CORO_PREFER_PERL_FUNCTIONS 0 |
120 |
#endif |
121 |
|
122 |
/* The next macros try to return the current stack pointer, in an as |
123 |
* portable way as possible. */ |
124 |
#if __GNUC__ >= 4 |
125 |
# define dSTACKLEVEL int stacklevel_dummy |
126 |
# define STACKLEVEL __builtin_frame_address (0) |
127 |
#else |
128 |
# define dSTACKLEVEL volatile void *stacklevel |
129 |
# define STACKLEVEL ((void *)&stacklevel) |
130 |
#endif |
131 |
|
132 |
#define IN_DESTRUCT (PL_main_cv == Nullcv) |
133 |
|
134 |
#if __GNUC__ >= 3 |
135 |
# define attribute(x) __attribute__(x) |
136 |
# define expect(expr,value) __builtin_expect ((expr),(value)) |
137 |
# define INLINE static inline |
138 |
#else |
139 |
# define attribute(x) |
140 |
# define expect(expr,value) (expr) |
141 |
# define INLINE static |
142 |
#endif |
143 |
|
144 |
#define expect_false(expr) expect ((expr) != 0, 0) |
145 |
#define expect_true(expr) expect ((expr) != 0, 1) |
146 |
|
147 |
#define NOINLINE attribute ((noinline)) |
148 |
|
149 |
#include "CoroAPI.h" |
150 |
#define GCoroAPI (&coroapi) /* very sneaky */ |
151 |
|
152 |
#ifdef USE_ITHREADS |
153 |
# if CORO_PTHREAD |
154 |
static void *coro_thx; |
155 |
# endif |
156 |
#endif |
157 |
|
158 |
static double (*nvtime)(); /* so why doesn't it take void? */ |
159 |
|
160 |
/* we hijack an hopefully unused CV flag for our purposes */ |
161 |
#define CVf_SLF 0x4000 |
162 |
static OP *pp_slf (pTHX); |
163 |
|
164 |
static U32 cctx_gen; |
165 |
static size_t cctx_stacksize = CORO_STACKSIZE; |
166 |
static struct CoroAPI coroapi; |
167 |
static AV *main_mainstack; /* used to differentiate between $main and others */ |
168 |
static JMPENV *main_top_env; |
169 |
static HV *coro_state_stash, *coro_stash; |
170 |
static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
171 |
|
172 |
static GV *irsgv; /* $/ */ |
173 |
static GV *stdoutgv; /* *STDOUT */ |
174 |
static SV *rv_diehook; |
175 |
static SV *rv_warnhook; |
176 |
static HV *hv_sig; /* %SIG */ |
177 |
|
178 |
/* async_pool helper stuff */ |
179 |
static SV *sv_pool_rss; |
180 |
static SV *sv_pool_size; |
181 |
static SV *sv_async_pool_idle; |
182 |
static AV *av_async_pool; |
183 |
static SV *sv_Coro; |
184 |
static CV *cv_pool_handler; |
185 |
static CV *cv_coro_new; |
186 |
|
187 |
/* Coro::AnyEvent */ |
188 |
static SV *sv_activity; |
189 |
|
190 |
static struct coro_cctx *cctx_first; |
191 |
static int cctx_count, cctx_idle; |
192 |
|
193 |
enum { |
194 |
CC_MAPPED = 0x01, |
195 |
CC_NOREUSE = 0x02, /* throw this away after tracing */ |
196 |
CC_TRACE = 0x04, |
197 |
CC_TRACE_SUB = 0x08, /* trace sub calls */ |
198 |
CC_TRACE_LINE = 0x10, /* trace each statement */ |
199 |
CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
200 |
}; |
201 |
|
202 |
/* this is a structure representing a c-level coroutine */ |
203 |
typedef struct coro_cctx |
204 |
{ |
205 |
struct coro_cctx *next; |
206 |
|
207 |
/* the stack */ |
208 |
void *sptr; |
209 |
size_t ssize; |
210 |
|
211 |
/* cpu state */ |
212 |
void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
213 |
JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
214 |
JMPENV *top_env; |
215 |
coro_context cctx; |
216 |
|
217 |
U32 gen; |
218 |
#if CORO_USE_VALGRIND |
219 |
int valgrind_id; |
220 |
#endif |
221 |
unsigned char flags; |
222 |
} coro_cctx; |
223 |
|
224 |
enum { |
225 |
CF_RUNNING = 0x0001, /* coroutine is running */ |
226 |
CF_READY = 0x0002, /* coroutine is ready */ |
227 |
CF_NEW = 0x0004, /* has never been switched to */ |
228 |
CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
229 |
}; |
230 |
|
231 |
/* the structure where most of the perl state is stored, overlaid on the cxstack */ |
232 |
typedef struct |
233 |
{ |
234 |
SV *defsv; |
235 |
AV *defav; |
236 |
SV *errsv; |
237 |
SV *irsgv; |
238 |
#define VAR(name,type) type name; |
239 |
# include "state.h" |
240 |
#undef VAR |
241 |
} perl_slots; |
242 |
|
243 |
#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
244 |
|
245 |
/* this is a structure representing a perl-level coroutine */ |
246 |
struct coro { |
247 |
/* the C coroutine allocated to this perl coroutine, if any */ |
248 |
coro_cctx *cctx; |
249 |
|
250 |
/* state data */ |
251 |
struct CoroSLF slf_frame; /* saved slf frame */ |
252 |
AV *mainstack; |
253 |
perl_slots *slot; /* basically the saved sp */ |
254 |
|
255 |
CV *startcv; /* the CV to execute */ |
256 |
AV *args; /* data associated with this coroutine (initial args) */ |
257 |
int refcnt; /* coroutines are refcounted, yes */ |
258 |
int flags; /* CF_ flags */ |
259 |
HV *hv; /* the perl hash associated with this coro, if any */ |
260 |
void (*on_destroy)(pTHX_ struct coro *coro); |
261 |
|
262 |
/* statistics */ |
263 |
int usecount; /* number of transfers to this coro */ |
264 |
|
265 |
/* coro process data */ |
266 |
int prio; |
267 |
SV *except; /* exception to be thrown */ |
268 |
SV *rouse_cb; |
269 |
|
270 |
/* async_pool */ |
271 |
SV *saved_deffh; |
272 |
SV *invoke_cb; |
273 |
AV *invoke_av; |
274 |
|
275 |
/* linked list */ |
276 |
struct coro *next, *prev; |
277 |
}; |
278 |
|
279 |
typedef struct coro *Coro__State; |
280 |
typedef struct coro *Coro__State_or_hashref; |
281 |
|
282 |
/* the following variables are effectively part of the perl context */ |
283 |
/* and get copied between struct coro and these variables */ |
284 |
/* the mainr easonw e don't support windows process emulation */ |
285 |
static struct CoroSLF slf_frame; /* the current slf frame */ |
286 |
|
287 |
/** Coro ********************************************************************/ |
288 |
|
289 |
#define PRIO_MAX 3 |
290 |
#define PRIO_HIGH 1 |
291 |
#define PRIO_NORMAL 0 |
292 |
#define PRIO_LOW -1 |
293 |
#define PRIO_IDLE -3 |
294 |
#define PRIO_MIN -4 |
295 |
|
296 |
/* for Coro.pm */ |
297 |
static SV *coro_current; |
298 |
static SV *coro_readyhook; |
299 |
static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; |
300 |
static CV *cv_coro_run, *cv_coro_terminate; |
301 |
static struct coro *coro_first; |
302 |
#define coro_nready coroapi.nready |
303 |
|
304 |
/** lowlevel stuff **********************************************************/ |
305 |
|
306 |
static SV * |
307 |
coro_get_sv (pTHX_ const char *name, int create) |
308 |
{ |
309 |
#if PERL_VERSION_ATLEAST (5,10,0) |
310 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
311 |
get_sv (name, create); |
312 |
#endif |
313 |
return get_sv (name, create); |
314 |
} |
315 |
|
316 |
static AV * |
317 |
coro_get_av (pTHX_ const char *name, int create) |
318 |
{ |
319 |
#if PERL_VERSION_ATLEAST (5,10,0) |
320 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
321 |
get_av (name, create); |
322 |
#endif |
323 |
return get_av (name, create); |
324 |
} |
325 |
|
326 |
static HV * |
327 |
coro_get_hv (pTHX_ const char *name, int create) |
328 |
{ |
329 |
#if PERL_VERSION_ATLEAST (5,10,0) |
330 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
331 |
get_hv (name, create); |
332 |
#endif |
333 |
return get_hv (name, create); |
334 |
} |
335 |
|
336 |
/* may croak */ |
337 |
INLINE CV * |
338 |
coro_sv_2cv (pTHX_ SV *sv) |
339 |
{ |
340 |
HV *st; |
341 |
GV *gvp; |
342 |
return sv_2cv (sv, &st, &gvp, 0); |
343 |
} |
344 |
|
345 |
static AV * |
346 |
coro_clone_padlist (pTHX_ CV *cv) |
347 |
{ |
348 |
AV *padlist = CvPADLIST (cv); |
349 |
AV *newpadlist, *newpad; |
350 |
|
351 |
newpadlist = newAV (); |
352 |
AvREAL_off (newpadlist); |
353 |
#if PERL_VERSION_ATLEAST (5,10,0) |
354 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
355 |
#else |
356 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
357 |
#endif |
358 |
newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
359 |
--AvFILLp (padlist); |
360 |
|
361 |
av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); |
362 |
av_store (newpadlist, 1, (SV *)newpad); |
363 |
|
364 |
return newpadlist; |
365 |
} |
366 |
|
367 |
static void |
368 |
free_padlist (pTHX_ AV *padlist) |
369 |
{ |
370 |
/* may be during global destruction */ |
371 |
if (SvREFCNT (padlist)) |
372 |
{ |
373 |
I32 i = AvFILLp (padlist); |
374 |
while (i >= 0) |
375 |
{ |
376 |
SV **svp = av_fetch (padlist, i--, FALSE); |
377 |
if (svp) |
378 |
{ |
379 |
SV *sv; |
380 |
while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
381 |
SvREFCNT_dec (sv); |
382 |
|
383 |
SvREFCNT_dec (*svp); |
384 |
} |
385 |
} |
386 |
|
387 |
SvREFCNT_dec ((SV*)padlist); |
388 |
} |
389 |
} |
390 |
|
391 |
static int |
392 |
coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
393 |
{ |
394 |
AV *padlist; |
395 |
AV *av = (AV *)mg->mg_obj; |
396 |
|
397 |
/* casting is fun. */ |
398 |
while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
399 |
free_padlist (aTHX_ padlist); |
400 |
|
401 |
SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
402 |
|
403 |
return 0; |
404 |
} |
405 |
|
406 |
#define CORO_MAGIC_type_cv 26 |
407 |
#define CORO_MAGIC_type_state PERL_MAGIC_ext |
408 |
|
409 |
static MGVTBL coro_cv_vtbl = { |
410 |
0, 0, 0, 0, |
411 |
coro_cv_free |
412 |
}; |
413 |
|
414 |
#define CORO_MAGIC_NN(sv, type) \ |
415 |
(expect_true (SvMAGIC (sv)->mg_type == type) \ |
416 |
? SvMAGIC (sv) \ |
417 |
: mg_find (sv, type)) |
418 |
|
419 |
#define CORO_MAGIC(sv, type) \ |
420 |
(expect_true (SvMAGIC (sv)) \ |
421 |
? CORO_MAGIC_NN (sv, type) \ |
422 |
: 0) |
423 |
|
424 |
#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
425 |
#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) |
426 |
|
427 |
INLINE struct coro * |
428 |
SvSTATE_ (pTHX_ SV *coro) |
429 |
{ |
430 |
HV *stash; |
431 |
MAGIC *mg; |
432 |
|
433 |
if (SvROK (coro)) |
434 |
coro = SvRV (coro); |
435 |
|
436 |
if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
437 |
croak ("Coro::State object required"); |
438 |
|
439 |
stash = SvSTASH (coro); |
440 |
if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
441 |
{ |
442 |
/* very slow, but rare, check */ |
443 |
if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
444 |
croak ("Coro::State object required"); |
445 |
} |
446 |
|
447 |
mg = CORO_MAGIC_state (coro); |
448 |
return (struct coro *)mg->mg_ptr; |
449 |
} |
450 |
|
451 |
#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
452 |
|
453 |
/* faster than SvSTATE, but expects a coroutine hv */ |
454 |
#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr) |
455 |
#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
456 |
|
457 |
/* the next two functions merely cache the padlists */ |
458 |
static void |
459 |
get_padlist (pTHX_ CV *cv) |
460 |
{ |
461 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
462 |
AV *av; |
463 |
|
464 |
if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
465 |
CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
466 |
else |
467 |
{ |
468 |
#if CORO_PREFER_PERL_FUNCTIONS |
469 |
/* this is probably cleaner? but also slower! */ |
470 |
/* in practise, it seems to be less stable */ |
471 |
CV *cp = Perl_cv_clone (aTHX_ cv); |
472 |
CvPADLIST (cv) = CvPADLIST (cp); |
473 |
CvPADLIST (cp) = 0; |
474 |
SvREFCNT_dec (cp); |
475 |
#else |
476 |
CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
477 |
#endif |
478 |
} |
479 |
} |
480 |
|
481 |
static void |
482 |
put_padlist (pTHX_ CV *cv) |
483 |
{ |
484 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
485 |
AV *av; |
486 |
|
487 |
if (expect_false (!mg)) |
488 |
mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
489 |
|
490 |
av = (AV *)mg->mg_obj; |
491 |
|
492 |
if (expect_false (AvFILLp (av) >= AvMAX (av))) |
493 |
av_extend (av, AvMAX (av) + 1); |
494 |
|
495 |
AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
496 |
} |
497 |
|
498 |
/** load & save, init *******************************************************/ |
499 |
|
500 |
static void |
501 |
load_perl (pTHX_ Coro__State c) |
502 |
{ |
503 |
perl_slots *slot = c->slot; |
504 |
c->slot = 0; |
505 |
|
506 |
PL_mainstack = c->mainstack; |
507 |
|
508 |
GvSV (PL_defgv) = slot->defsv; |
509 |
GvAV (PL_defgv) = slot->defav; |
510 |
GvSV (PL_errgv) = slot->errsv; |
511 |
GvSV (irsgv) = slot->irsgv; |
512 |
|
513 |
#define VAR(name,type) PL_ ## name = slot->name; |
514 |
# include "state.h" |
515 |
#undef VAR |
516 |
|
517 |
{ |
518 |
dSP; |
519 |
|
520 |
CV *cv; |
521 |
|
522 |
/* now do the ugly restore mess */ |
523 |
while (expect_true (cv = (CV *)POPs)) |
524 |
{ |
525 |
put_padlist (aTHX_ cv); /* mark this padlist as available */ |
526 |
CvDEPTH (cv) = PTR2IV (POPs); |
527 |
CvPADLIST (cv) = (AV *)POPs; |
528 |
} |
529 |
|
530 |
PUTBACK; |
531 |
} |
532 |
|
533 |
slf_frame = c->slf_frame; |
534 |
CORO_THROW = c->except; |
535 |
} |
536 |
|
537 |
static void |
538 |
save_perl (pTHX_ Coro__State c) |
539 |
{ |
540 |
c->except = CORO_THROW; |
541 |
c->slf_frame = slf_frame; |
542 |
|
543 |
{ |
544 |
dSP; |
545 |
I32 cxix = cxstack_ix; |
546 |
PERL_CONTEXT *ccstk = cxstack; |
547 |
PERL_SI *top_si = PL_curstackinfo; |
548 |
|
549 |
/* |
550 |
* the worst thing you can imagine happens first - we have to save |
551 |
* (and reinitialize) all cv's in the whole callchain :( |
552 |
*/ |
553 |
|
554 |
XPUSHs (Nullsv); |
555 |
/* this loop was inspired by pp_caller */ |
556 |
for (;;) |
557 |
{ |
558 |
while (expect_true (cxix >= 0)) |
559 |
{ |
560 |
PERL_CONTEXT *cx = &ccstk[cxix--]; |
561 |
|
562 |
if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) |
563 |
{ |
564 |
CV *cv = cx->blk_sub.cv; |
565 |
|
566 |
if (expect_true (CvDEPTH (cv))) |
567 |
{ |
568 |
EXTEND (SP, 3); |
569 |
PUSHs ((SV *)CvPADLIST (cv)); |
570 |
PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
571 |
PUSHs ((SV *)cv); |
572 |
|
573 |
CvDEPTH (cv) = 0; |
574 |
get_padlist (aTHX_ cv); |
575 |
} |
576 |
} |
577 |
} |
578 |
|
579 |
if (expect_true (top_si->si_type == PERLSI_MAIN)) |
580 |
break; |
581 |
|
582 |
top_si = top_si->si_prev; |
583 |
ccstk = top_si->si_cxstack; |
584 |
cxix = top_si->si_cxix; |
585 |
} |
586 |
|
587 |
PUTBACK; |
588 |
} |
589 |
|
590 |
/* allocate some space on the context stack for our purposes */ |
591 |
/* we manually unroll here, as usually 2 slots is enough */ |
592 |
if (SLOT_COUNT >= 1) CXINC; |
593 |
if (SLOT_COUNT >= 2) CXINC; |
594 |
if (SLOT_COUNT >= 3) CXINC; |
595 |
{ |
596 |
int i; |
597 |
for (i = 3; i < SLOT_COUNT; ++i) |
598 |
CXINC; |
599 |
} |
600 |
cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
601 |
|
602 |
c->mainstack = PL_mainstack; |
603 |
|
604 |
{ |
605 |
perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
606 |
|
607 |
slot->defav = GvAV (PL_defgv); |
608 |
slot->defsv = DEFSV; |
609 |
slot->errsv = ERRSV; |
610 |
slot->irsgv = GvSV (irsgv); |
611 |
|
612 |
#define VAR(name,type) slot->name = PL_ ## name; |
613 |
# include "state.h" |
614 |
#undef VAR |
615 |
} |
616 |
} |
617 |
|
618 |
/* |
619 |
* allocate various perl stacks. This is almost an exact copy |
620 |
* of perl.c:init_stacks, except that it uses less memory |
621 |
* on the (sometimes correct) assumption that coroutines do |
622 |
* not usually need a lot of stackspace. |
623 |
*/ |
624 |
#if CORO_PREFER_PERL_FUNCTIONS |
625 |
# define coro_init_stacks(thx) init_stacks () |
626 |
#else |
627 |
static void |
628 |
coro_init_stacks (pTHX) |
629 |
{ |
630 |
PL_curstackinfo = new_stackinfo(32, 8); |
631 |
PL_curstackinfo->si_type = PERLSI_MAIN; |
632 |
PL_curstack = PL_curstackinfo->si_stack; |
633 |
PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
634 |
|
635 |
PL_stack_base = AvARRAY(PL_curstack); |
636 |
PL_stack_sp = PL_stack_base; |
637 |
PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
638 |
|
639 |
New(50,PL_tmps_stack,32,SV*); |
640 |
PL_tmps_floor = -1; |
641 |
PL_tmps_ix = -1; |
642 |
PL_tmps_max = 32; |
643 |
|
644 |
New(54,PL_markstack,16,I32); |
645 |
PL_markstack_ptr = PL_markstack; |
646 |
PL_markstack_max = PL_markstack + 16; |
647 |
|
648 |
#ifdef SET_MARK_OFFSET |
649 |
SET_MARK_OFFSET; |
650 |
#endif |
651 |
|
652 |
New(54,PL_scopestack,8,I32); |
653 |
PL_scopestack_ix = 0; |
654 |
PL_scopestack_max = 8; |
655 |
|
656 |
New(54,PL_savestack,24,ANY); |
657 |
PL_savestack_ix = 0; |
658 |
PL_savestack_max = 24; |
659 |
|
660 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
661 |
New(54,PL_retstack,4,OP*); |
662 |
PL_retstack_ix = 0; |
663 |
PL_retstack_max = 4; |
664 |
#endif |
665 |
} |
666 |
#endif |
667 |
|
668 |
/* |
669 |
* destroy the stacks, the callchain etc... |
670 |
*/ |
671 |
static void |
672 |
coro_destruct_stacks (pTHX) |
673 |
{ |
674 |
while (PL_curstackinfo->si_next) |
675 |
PL_curstackinfo = PL_curstackinfo->si_next; |
676 |
|
677 |
while (PL_curstackinfo) |
678 |
{ |
679 |
PERL_SI *p = PL_curstackinfo->si_prev; |
680 |
|
681 |
if (!IN_DESTRUCT) |
682 |
SvREFCNT_dec (PL_curstackinfo->si_stack); |
683 |
|
684 |
Safefree (PL_curstackinfo->si_cxstack); |
685 |
Safefree (PL_curstackinfo); |
686 |
PL_curstackinfo = p; |
687 |
} |
688 |
|
689 |
Safefree (PL_tmps_stack); |
690 |
Safefree (PL_markstack); |
691 |
Safefree (PL_scopestack); |
692 |
Safefree (PL_savestack); |
693 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
694 |
Safefree (PL_retstack); |
695 |
#endif |
696 |
} |
697 |
|
698 |
#define CORO_RSS \ |
699 |
rss += sizeof (SYM (curstackinfo)); \ |
700 |
rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \ |
701 |
rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \ |
702 |
rss += SYM (tmps_max) * sizeof (SV *); \ |
703 |
rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \ |
704 |
rss += SYM (scopestack_max) * sizeof (I32); \ |
705 |
rss += SYM (savestack_max) * sizeof (ANY); |
706 |
|
707 |
static size_t |
708 |
coro_rss (pTHX_ struct coro *coro) |
709 |
{ |
710 |
size_t rss = sizeof (*coro); |
711 |
|
712 |
if (coro->mainstack) |
713 |
{ |
714 |
if (coro->flags & CF_RUNNING) |
715 |
{ |
716 |
#define SYM(sym) PL_ ## sym |
717 |
CORO_RSS; |
718 |
#undef SYM |
719 |
} |
720 |
else |
721 |
{ |
722 |
#define SYM(sym) coro->slot->sym |
723 |
CORO_RSS; |
724 |
#undef SYM |
725 |
} |
726 |
} |
727 |
|
728 |
return rss; |
729 |
} |
730 |
|
731 |
/** coroutine stack handling ************************************************/ |
732 |
|
733 |
static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
734 |
static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
735 |
static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
736 |
|
737 |
/* apparently < 5.8.8 */ |
738 |
#ifndef MgPV_nolen_const |
739 |
#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
740 |
SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
741 |
(const char*)(mg)->mg_ptr) |
742 |
#endif |
743 |
|
744 |
/* |
745 |
* This overrides the default magic get method of %SIG elements. |
746 |
* The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
747 |
* and instead of tryign to save and restore the hash elements, we just provide |
748 |
* readback here. |
749 |
* We only do this when the hook is != 0, as they are often set to 0 temporarily, |
750 |
* not expecting this to actually change the hook. This is a potential problem |
751 |
* when a schedule happens then, but we ignore this. |
752 |
*/ |
753 |
static int |
754 |
coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
755 |
{ |
756 |
const char *s = MgPV_nolen_const (mg); |
757 |
|
758 |
if (*s == '_') |
759 |
{ |
760 |
SV **svp = 0; |
761 |
|
762 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
763 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
764 |
|
765 |
if (svp) |
766 |
{ |
767 |
sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
768 |
return 0; |
769 |
} |
770 |
} |
771 |
|
772 |
return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
773 |
} |
774 |
|
775 |
static int |
776 |
coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
777 |
{ |
778 |
const char *s = MgPV_nolen_const (mg); |
779 |
|
780 |
if (*s == '_') |
781 |
{ |
782 |
SV **svp = 0; |
783 |
|
784 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
785 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
786 |
|
787 |
if (svp) |
788 |
{ |
789 |
SV *old = *svp; |
790 |
*svp = 0; |
791 |
SvREFCNT_dec (old); |
792 |
return 0; |
793 |
} |
794 |
} |
795 |
|
796 |
return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
797 |
} |
798 |
|
799 |
static int |
800 |
coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
801 |
{ |
802 |
const char *s = MgPV_nolen_const (mg); |
803 |
|
804 |
if (*s == '_') |
805 |
{ |
806 |
SV **svp = 0; |
807 |
|
808 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
809 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
810 |
|
811 |
if (svp) |
812 |
{ |
813 |
SV *old = *svp; |
814 |
*svp = newSVsv (sv); |
815 |
SvREFCNT_dec (old); |
816 |
return 0; |
817 |
} |
818 |
} |
819 |
|
820 |
return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
821 |
} |
822 |
|
823 |
static void |
824 |
prepare_nop (pTHX_ struct coro_transfer_args *ta) |
825 |
{ |
826 |
/* kind of mega-hacky, but works */ |
827 |
ta->next = ta->prev = (struct coro *)ta; |
828 |
} |
829 |
|
830 |
static int |
831 |
slf_check_nop (pTHX_ struct CoroSLF *frame) |
832 |
{ |
833 |
return 0; |
834 |
} |
835 |
|
836 |
static UNOP coro_setup_op; |
837 |
|
838 |
static void NOINLINE /* noinline to keep it out of the transfer fast path */ |
839 |
coro_setup (pTHX_ struct coro *coro) |
840 |
{ |
841 |
/* |
842 |
* emulate part of the perl startup here. |
843 |
*/ |
844 |
coro_init_stacks (aTHX); |
845 |
|
846 |
PL_runops = RUNOPS_DEFAULT; |
847 |
PL_curcop = &PL_compiling; |
848 |
PL_in_eval = EVAL_NULL; |
849 |
PL_comppad = 0; |
850 |
PL_curpm = 0; |
851 |
PL_curpad = 0; |
852 |
PL_localizing = 0; |
853 |
PL_dirty = 0; |
854 |
PL_restartop = 0; |
855 |
#if PERL_VERSION_ATLEAST (5,10,0) |
856 |
PL_parser = 0; |
857 |
#endif |
858 |
|
859 |
/* recreate the die/warn hooks */ |
860 |
PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
861 |
PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
862 |
|
863 |
GvSV (PL_defgv) = newSV (0); |
864 |
GvAV (PL_defgv) = coro->args; coro->args = 0; |
865 |
GvSV (PL_errgv) = newSV (0); |
866 |
GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
867 |
PL_rs = newSVsv (GvSV (irsgv)); |
868 |
PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
869 |
|
870 |
{ |
871 |
dSP; |
872 |
UNOP myop; |
873 |
|
874 |
Zero (&myop, 1, UNOP); |
875 |
myop.op_next = Nullop; |
876 |
myop.op_type = OP_ENTERSUB; |
877 |
myop.op_flags = OPf_WANT_VOID; |
878 |
|
879 |
PUSHMARK (SP); |
880 |
PUSHs ((SV *)coro->startcv); |
881 |
PUTBACK; |
882 |
PL_op = (OP *)&myop; |
883 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
884 |
} |
885 |
|
886 |
/* this newly created coroutine might be run on an existing cctx which most |
887 |
* likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
888 |
*/ |
889 |
slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
890 |
slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
891 |
|
892 |
/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ |
893 |
coro_setup_op.op_next = PL_op; |
894 |
coro_setup_op.op_type = OP_CUSTOM; |
895 |
coro_setup_op.op_ppaddr = pp_slf; |
896 |
/* no flags etc. required, as an init function won't be called */ |
897 |
|
898 |
PL_op = (OP *)&coro_setup_op; |
899 |
|
900 |
/* copy throw, in case it was set before coro_setup */ |
901 |
CORO_THROW = coro->except; |
902 |
} |
903 |
|
904 |
static void |
905 |
coro_destruct (pTHX_ struct coro *coro) |
906 |
{ |
907 |
if (!IN_DESTRUCT) |
908 |
{ |
909 |
/* restore all saved variables and stuff */ |
910 |
LEAVE_SCOPE (0); |
911 |
assert (PL_tmps_floor == -1); |
912 |
|
913 |
/* free all temporaries */ |
914 |
FREETMPS; |
915 |
assert (PL_tmps_ix == -1); |
916 |
|
917 |
/* unwind all extra stacks */ |
918 |
POPSTACK_TO (PL_mainstack); |
919 |
|
920 |
/* unwind main stack */ |
921 |
dounwind (-1); |
922 |
} |
923 |
|
924 |
SvREFCNT_dec (GvSV (PL_defgv)); |
925 |
SvREFCNT_dec (GvAV (PL_defgv)); |
926 |
SvREFCNT_dec (GvSV (PL_errgv)); |
927 |
SvREFCNT_dec (PL_defoutgv); |
928 |
SvREFCNT_dec (PL_rs); |
929 |
SvREFCNT_dec (GvSV (irsgv)); |
930 |
|
931 |
SvREFCNT_dec (PL_diehook); |
932 |
SvREFCNT_dec (PL_warnhook); |
933 |
|
934 |
SvREFCNT_dec (coro->saved_deffh); |
935 |
SvREFCNT_dec (coro->rouse_cb); |
936 |
SvREFCNT_dec (coro->invoke_cb); |
937 |
SvREFCNT_dec (coro->invoke_av); |
938 |
|
939 |
coro_destruct_stacks (aTHX); |
940 |
} |
941 |
|
942 |
INLINE void |
943 |
free_coro_mortal (pTHX) |
944 |
{ |
945 |
if (expect_true (coro_mortal)) |
946 |
{ |
947 |
SvREFCNT_dec (coro_mortal); |
948 |
coro_mortal = 0; |
949 |
} |
950 |
} |
951 |
|
952 |
static int |
953 |
runops_trace (pTHX) |
954 |
{ |
955 |
COP *oldcop = 0; |
956 |
int oldcxix = -2; |
957 |
struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */ |
958 |
coro_cctx *cctx = coro->cctx; |
959 |
|
960 |
while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
961 |
{ |
962 |
PERL_ASYNC_CHECK (); |
963 |
|
964 |
if (cctx->flags & CC_TRACE_ALL) |
965 |
{ |
966 |
if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) |
967 |
{ |
968 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
969 |
SV **bot, **top; |
970 |
AV *av = newAV (); /* return values */ |
971 |
SV **cb; |
972 |
dSP; |
973 |
|
974 |
GV *gv = CvGV (cx->blk_sub.cv); |
975 |
SV *fullname = sv_2mortal (newSV (0)); |
976 |
if (isGV (gv)) |
977 |
gv_efullname3 (fullname, gv, 0); |
978 |
|
979 |
bot = PL_stack_base + cx->blk_oldsp + 1; |
980 |
top = cx->blk_gimme == G_ARRAY ? SP + 1 |
981 |
: cx->blk_gimme == G_SCALAR ? bot + 1 |
982 |
: bot; |
983 |
|
984 |
av_extend (av, top - bot); |
985 |
while (bot < top) |
986 |
av_push (av, SvREFCNT_inc_NN (*bot++)); |
987 |
|
988 |
PL_runops = RUNOPS_DEFAULT; |
989 |
ENTER; |
990 |
SAVETMPS; |
991 |
EXTEND (SP, 3); |
992 |
PUSHMARK (SP); |
993 |
PUSHs (&PL_sv_no); |
994 |
PUSHs (fullname); |
995 |
PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
996 |
PUTBACK; |
997 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
998 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
999 |
SPAGAIN; |
1000 |
FREETMPS; |
1001 |
LEAVE; |
1002 |
PL_runops = runops_trace; |
1003 |
} |
1004 |
|
1005 |
if (oldcop != PL_curcop) |
1006 |
{ |
1007 |
oldcop = PL_curcop; |
1008 |
|
1009 |
if (PL_curcop != &PL_compiling) |
1010 |
{ |
1011 |
SV **cb; |
1012 |
|
1013 |
if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) |
1014 |
{ |
1015 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
1016 |
|
1017 |
if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
1018 |
{ |
1019 |
runops_proc_t old_runops = PL_runops; |
1020 |
dSP; |
1021 |
GV *gv = CvGV (cx->blk_sub.cv); |
1022 |
SV *fullname = sv_2mortal (newSV (0)); |
1023 |
|
1024 |
if (isGV (gv)) |
1025 |
gv_efullname3 (fullname, gv, 0); |
1026 |
|
1027 |
PL_runops = RUNOPS_DEFAULT; |
1028 |
ENTER; |
1029 |
SAVETMPS; |
1030 |
EXTEND (SP, 3); |
1031 |
PUSHMARK (SP); |
1032 |
PUSHs (&PL_sv_yes); |
1033 |
PUSHs (fullname); |
1034 |
PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
1035 |
PUTBACK; |
1036 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
1037 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1038 |
SPAGAIN; |
1039 |
FREETMPS; |
1040 |
LEAVE; |
1041 |
PL_runops = runops_trace; |
1042 |
} |
1043 |
|
1044 |
oldcxix = cxstack_ix; |
1045 |
} |
1046 |
|
1047 |
if (cctx->flags & CC_TRACE_LINE) |
1048 |
{ |
1049 |
dSP; |
1050 |
|
1051 |
PL_runops = RUNOPS_DEFAULT; |
1052 |
ENTER; |
1053 |
SAVETMPS; |
1054 |
EXTEND (SP, 3); |
1055 |
PL_runops = RUNOPS_DEFAULT; |
1056 |
PUSHMARK (SP); |
1057 |
PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
1058 |
PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
1059 |
PUTBACK; |
1060 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
1061 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1062 |
SPAGAIN; |
1063 |
FREETMPS; |
1064 |
LEAVE; |
1065 |
PL_runops = runops_trace; |
1066 |
} |
1067 |
} |
1068 |
} |
1069 |
} |
1070 |
} |
1071 |
|
1072 |
TAINT_NOT; |
1073 |
return 0; |
1074 |
} |
1075 |
|
1076 |
static struct coro_cctx *cctx_ssl_cctx; |
1077 |
static struct CoroSLF cctx_ssl_frame; |
1078 |
|
1079 |
static void |
1080 |
slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
1081 |
{ |
1082 |
ta->prev = (struct coro *)cctx_ssl_cctx; |
1083 |
ta->next = 0; |
1084 |
} |
1085 |
|
1086 |
static int |
1087 |
slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) |
1088 |
{ |
1089 |
*frame = cctx_ssl_frame; |
1090 |
|
1091 |
return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ |
1092 |
} |
1093 |
|
1094 |
/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ |
1095 |
static void NOINLINE |
1096 |
cctx_prepare (pTHX_ coro_cctx *cctx) |
1097 |
{ |
1098 |
PL_top_env = &PL_start_env; |
1099 |
|
1100 |
if (cctx->flags & CC_TRACE) |
1101 |
PL_runops = runops_trace; |
1102 |
|
1103 |
/* we already must be executing an SLF op, there is no other valid way |
1104 |
* that can lead to creation of a new cctx */ |
1105 |
assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", |
1106 |
slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); |
1107 |
|
1108 |
/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ |
1109 |
cctx_ssl_cctx = cctx; |
1110 |
cctx_ssl_frame = slf_frame; |
1111 |
|
1112 |
slf_frame.prepare = slf_prepare_set_stacklevel; |
1113 |
slf_frame.check = slf_check_set_stacklevel; |
1114 |
} |
1115 |
|
1116 |
/* the tail of transfer: execute stuff we can only do after a transfer */ |
1117 |
INLINE void |
1118 |
transfer_tail (pTHX) |
1119 |
{ |
1120 |
free_coro_mortal (aTHX); |
1121 |
} |
1122 |
|
1123 |
/* |
1124 |
* this is a _very_ stripped down perl interpreter ;) |
1125 |
*/ |
1126 |
static void |
1127 |
cctx_run (void *arg) |
1128 |
{ |
1129 |
#ifdef USE_ITHREADS |
1130 |
# if CORO_PTHREAD |
1131 |
PERL_SET_CONTEXT (coro_thx); |
1132 |
# endif |
1133 |
#endif |
1134 |
{ |
1135 |
dTHX; |
1136 |
|
1137 |
/* normally we would need to skip the entersub here */ |
1138 |
/* not doing so will re-execute it, which is exactly what we want */ |
1139 |
/* PL_nop = PL_nop->op_next */ |
1140 |
|
1141 |
/* inject a fake subroutine call to cctx_init */ |
1142 |
cctx_prepare (aTHX_ (coro_cctx *)arg); |
1143 |
|
1144 |
/* cctx_run is the alternative tail of transfer() */ |
1145 |
transfer_tail (aTHX); |
1146 |
|
1147 |
/* somebody or something will hit me for both perl_run and PL_restartop */ |
1148 |
PL_restartop = PL_op; |
1149 |
perl_run (PL_curinterp); |
1150 |
/* |
1151 |
* Unfortunately, there is no way to get at the return values of the |
1152 |
* coro body here, as perl_run destroys these |
1153 |
*/ |
1154 |
|
1155 |
/* |
1156 |
* If perl-run returns we assume exit() was being called or the coro |
1157 |
* fell off the end, which seems to be the only valid (non-bug) |
1158 |
* reason for perl_run to return. We try to exit by jumping to the |
1159 |
* bootstrap-time "top" top_env, as we cannot restore the "main" |
1160 |
* coroutine as Coro has no such concept |
1161 |
*/ |
1162 |
PL_top_env = main_top_env; |
1163 |
JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
1164 |
} |
1165 |
} |
1166 |
|
1167 |
static coro_cctx * |
1168 |
cctx_new () |
1169 |
{ |
1170 |
coro_cctx *cctx; |
1171 |
|
1172 |
++cctx_count; |
1173 |
New (0, cctx, 1, coro_cctx); |
1174 |
|
1175 |
cctx->gen = cctx_gen; |
1176 |
cctx->flags = 0; |
1177 |
cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
1178 |
|
1179 |
return cctx; |
1180 |
} |
1181 |
|
1182 |
/* create a new cctx only suitable as source */ |
1183 |
static coro_cctx * |
1184 |
cctx_new_empty () |
1185 |
{ |
1186 |
coro_cctx *cctx = cctx_new (); |
1187 |
|
1188 |
cctx->sptr = 0; |
1189 |
coro_create (&cctx->cctx, 0, 0, 0, 0); |
1190 |
|
1191 |
return cctx; |
1192 |
} |
1193 |
|
1194 |
/* create a new cctx suitable as destination/running a perl interpreter */ |
1195 |
static coro_cctx * |
1196 |
cctx_new_run () |
1197 |
{ |
1198 |
coro_cctx *cctx = cctx_new (); |
1199 |
void *stack_start; |
1200 |
size_t stack_size; |
1201 |
|
1202 |
#if HAVE_MMAP |
1203 |
cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
1204 |
/* mmap supposedly does allocate-on-write for us */ |
1205 |
cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
1206 |
|
1207 |
if (cctx->sptr != (void *)-1) |
1208 |
{ |
1209 |
#if CORO_STACKGUARD |
1210 |
mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
1211 |
#endif |
1212 |
stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
1213 |
stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
1214 |
cctx->flags |= CC_MAPPED; |
1215 |
} |
1216 |
else |
1217 |
#endif |
1218 |
{ |
1219 |
cctx->ssize = cctx_stacksize * (long)sizeof (long); |
1220 |
New (0, cctx->sptr, cctx_stacksize, long); |
1221 |
|
1222 |
if (!cctx->sptr) |
1223 |
{ |
1224 |
perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
1225 |
_exit (EXIT_FAILURE); |
1226 |
} |
1227 |
|
1228 |
stack_start = cctx->sptr; |
1229 |
stack_size = cctx->ssize; |
1230 |
} |
1231 |
|
1232 |
#if CORO_USE_VALGRIND |
1233 |
cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
1234 |
#endif |
1235 |
|
1236 |
coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
1237 |
|
1238 |
return cctx; |
1239 |
} |
1240 |
|
1241 |
static void |
1242 |
cctx_destroy (coro_cctx *cctx) |
1243 |
{ |
1244 |
if (!cctx) |
1245 |
return; |
1246 |
|
1247 |
--cctx_count; |
1248 |
coro_destroy (&cctx->cctx); |
1249 |
|
1250 |
/* coro_transfer creates new, empty cctx's */ |
1251 |
if (cctx->sptr) |
1252 |
{ |
1253 |
#if CORO_USE_VALGRIND |
1254 |
VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
1255 |
#endif |
1256 |
|
1257 |
#if HAVE_MMAP |
1258 |
if (cctx->flags & CC_MAPPED) |
1259 |
munmap (cctx->sptr, cctx->ssize); |
1260 |
else |
1261 |
#endif |
1262 |
Safefree (cctx->sptr); |
1263 |
} |
1264 |
|
1265 |
Safefree (cctx); |
1266 |
} |
1267 |
|
1268 |
/* wether this cctx should be destructed */ |
1269 |
#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
1270 |
|
1271 |
static coro_cctx * |
1272 |
cctx_get (pTHX) |
1273 |
{ |
1274 |
while (expect_true (cctx_first)) |
1275 |
{ |
1276 |
coro_cctx *cctx = cctx_first; |
1277 |
cctx_first = cctx->next; |
1278 |
--cctx_idle; |
1279 |
|
1280 |
if (expect_true (!CCTX_EXPIRED (cctx))) |
1281 |
return cctx; |
1282 |
|
1283 |
cctx_destroy (cctx); |
1284 |
} |
1285 |
|
1286 |
return cctx_new_run (); |
1287 |
} |
1288 |
|
1289 |
static void |
1290 |
cctx_put (coro_cctx *cctx) |
1291 |
{ |
1292 |
assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
1293 |
|
1294 |
/* free another cctx if overlimit */ |
1295 |
if (expect_false (cctx_idle >= cctx_max_idle)) |
1296 |
{ |
1297 |
coro_cctx *first = cctx_first; |
1298 |
cctx_first = first->next; |
1299 |
--cctx_idle; |
1300 |
|
1301 |
cctx_destroy (first); |
1302 |
} |
1303 |
|
1304 |
++cctx_idle; |
1305 |
cctx->next = cctx_first; |
1306 |
cctx_first = cctx; |
1307 |
} |
1308 |
|
1309 |
/** coroutine switching *****************************************************/ |
1310 |
|
1311 |
static void |
1312 |
transfer_check (pTHX_ struct coro *prev, struct coro *next) |
1313 |
{ |
1314 |
/* TODO: throwing up here is considered harmful */ |
1315 |
|
1316 |
if (expect_true (prev != next)) |
1317 |
{ |
1318 |
if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
1319 |
croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); |
1320 |
|
1321 |
if (expect_false (next->flags & CF_RUNNING)) |
1322 |
croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); |
1323 |
|
1324 |
if (expect_false (next->flags & CF_DESTROYED)) |
1325 |
croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); |
1326 |
|
1327 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
1328 |
if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
1329 |
croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); |
1330 |
#endif |
1331 |
} |
1332 |
} |
1333 |
|
1334 |
/* always use the TRANSFER macro */ |
1335 |
static void NOINLINE /* noinline so we have a fixed stackframe */ |
1336 |
transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
1337 |
{ |
1338 |
dSTACKLEVEL; |
1339 |
|
1340 |
/* sometimes transfer is only called to set idle_sp */ |
1341 |
if (expect_false (!next)) |
1342 |
{ |
1343 |
((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
1344 |
assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1345 |
} |
1346 |
else if (expect_true (prev != next)) |
1347 |
{ |
1348 |
coro_cctx *prev__cctx; |
1349 |
|
1350 |
if (expect_false (prev->flags & CF_NEW)) |
1351 |
{ |
1352 |
/* create a new empty/source context */ |
1353 |
prev->cctx = cctx_new_empty (); |
1354 |
prev->flags &= ~CF_NEW; |
1355 |
prev->flags |= CF_RUNNING; |
1356 |
} |
1357 |
|
1358 |
prev->flags &= ~CF_RUNNING; |
1359 |
next->flags |= CF_RUNNING; |
1360 |
|
1361 |
/* first get rid of the old state */ |
1362 |
save_perl (aTHX_ prev); |
1363 |
|
1364 |
if (expect_false (next->flags & CF_NEW)) |
1365 |
{ |
1366 |
/* need to start coroutine */ |
1367 |
next->flags &= ~CF_NEW; |
1368 |
/* setup coroutine call */ |
1369 |
coro_setup (aTHX_ next); |
1370 |
} |
1371 |
else |
1372 |
load_perl (aTHX_ next); |
1373 |
|
1374 |
prev__cctx = prev->cctx; |
1375 |
|
1376 |
/* possibly untie and reuse the cctx */ |
1377 |
if (expect_true ( |
1378 |
prev__cctx->idle_sp == STACKLEVEL |
1379 |
&& !(prev__cctx->flags & CC_TRACE) |
1380 |
&& !force_cctx |
1381 |
)) |
1382 |
{ |
1383 |
/* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
1384 |
assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); |
1385 |
|
1386 |
prev->cctx = 0; |
1387 |
|
1388 |
/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
1389 |
/* without this the next cctx_get might destroy the prev__cctx while still in use */ |
1390 |
if (expect_false (CCTX_EXPIRED (prev__cctx))) |
1391 |
if (!next->cctx) |
1392 |
next->cctx = cctx_get (aTHX); |
1393 |
|
1394 |
cctx_put (prev__cctx); |
1395 |
} |
1396 |
|
1397 |
++next->usecount; |
1398 |
|
1399 |
if (expect_true (!next->cctx)) |
1400 |
next->cctx = cctx_get (aTHX); |
1401 |
|
1402 |
if (expect_false (prev__cctx != next->cctx)) |
1403 |
{ |
1404 |
prev__cctx->top_env = PL_top_env; |
1405 |
PL_top_env = next->cctx->top_env; |
1406 |
coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
1407 |
} |
1408 |
|
1409 |
transfer_tail (aTHX); |
1410 |
} |
1411 |
} |
1412 |
|
1413 |
#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
1414 |
#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
1415 |
|
1416 |
/** high level stuff ********************************************************/ |
1417 |
|
1418 |
static int |
1419 |
coro_state_destroy (pTHX_ struct coro *coro) |
1420 |
{ |
1421 |
if (coro->flags & CF_DESTROYED) |
1422 |
return 0; |
1423 |
|
1424 |
if (coro->on_destroy) |
1425 |
coro->on_destroy (aTHX_ coro); |
1426 |
|
1427 |
coro->flags |= CF_DESTROYED; |
1428 |
|
1429 |
if (coro->flags & CF_READY) |
1430 |
{ |
1431 |
/* reduce nready, as destroying a ready coro effectively unreadies it */ |
1432 |
/* alternative: look through all ready queues and remove the coro */ |
1433 |
--coro_nready; |
1434 |
} |
1435 |
else |
1436 |
coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
1437 |
|
1438 |
if (coro->mainstack && coro->mainstack != main_mainstack) |
1439 |
{ |
1440 |
struct coro temp; |
1441 |
|
1442 |
assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); |
1443 |
|
1444 |
save_perl (aTHX_ &temp); |
1445 |
load_perl (aTHX_ coro); |
1446 |
|
1447 |
coro_destruct (aTHX_ coro); |
1448 |
|
1449 |
load_perl (aTHX_ &temp); |
1450 |
|
1451 |
coro->slot = 0; |
1452 |
} |
1453 |
|
1454 |
cctx_destroy (coro->cctx); |
1455 |
SvREFCNT_dec (coro->startcv); |
1456 |
SvREFCNT_dec (coro->args); |
1457 |
SvREFCNT_dec (CORO_THROW); |
1458 |
|
1459 |
if (coro->next) coro->next->prev = coro->prev; |
1460 |
if (coro->prev) coro->prev->next = coro->next; |
1461 |
if (coro == coro_first) coro_first = coro->next; |
1462 |
|
1463 |
return 1; |
1464 |
} |
1465 |
|
1466 |
static int |
1467 |
coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
1468 |
{ |
1469 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1470 |
mg->mg_ptr = 0; |
1471 |
|
1472 |
coro->hv = 0; |
1473 |
|
1474 |
if (--coro->refcnt < 0) |
1475 |
{ |
1476 |
coro_state_destroy (aTHX_ coro); |
1477 |
Safefree (coro); |
1478 |
} |
1479 |
|
1480 |
return 0; |
1481 |
} |
1482 |
|
1483 |
static int |
1484 |
coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
1485 |
{ |
1486 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1487 |
|
1488 |
++coro->refcnt; |
1489 |
|
1490 |
return 0; |
1491 |
} |
1492 |
|
1493 |
static MGVTBL coro_state_vtbl = { |
1494 |
0, 0, 0, 0, |
1495 |
coro_state_free, |
1496 |
0, |
1497 |
#ifdef MGf_DUP |
1498 |
coro_state_dup, |
1499 |
#else |
1500 |
# define MGf_DUP 0 |
1501 |
#endif |
1502 |
}; |
1503 |
|
1504 |
static void |
1505 |
prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
1506 |
{ |
1507 |
ta->prev = SvSTATE (prev_sv); |
1508 |
ta->next = SvSTATE (next_sv); |
1509 |
TRANSFER_CHECK (*ta); |
1510 |
} |
1511 |
|
1512 |
static void |
1513 |
api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
1514 |
{ |
1515 |
struct coro_transfer_args ta; |
1516 |
|
1517 |
prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1518 |
TRANSFER (ta, 1); |
1519 |
} |
1520 |
|
1521 |
/*****************************************************************************/ |
1522 |
/* gensub: simple closure generation utility */ |
1523 |
|
1524 |
#define GENSUB_ARG CvXSUBANY (cv).any_ptr |
1525 |
|
1526 |
/* create a closure from XS, returns a code reference */ |
1527 |
/* the arg can be accessed via GENSUB_ARG from the callback */ |
1528 |
/* the callback must use dXSARGS/XSRETURN */ |
1529 |
static SV * |
1530 |
gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
1531 |
{ |
1532 |
CV *cv = (CV *)newSV (0); |
1533 |
|
1534 |
sv_upgrade ((SV *)cv, SVt_PVCV); |
1535 |
|
1536 |
CvANON_on (cv); |
1537 |
CvISXSUB_on (cv); |
1538 |
CvXSUB (cv) = xsub; |
1539 |
GENSUB_ARG = arg; |
1540 |
|
1541 |
return newRV_noinc ((SV *)cv); |
1542 |
} |
1543 |
|
1544 |
/** Coro ********************************************************************/ |
1545 |
|
1546 |
INLINE void |
1547 |
coro_enq (pTHX_ struct coro *coro) |
1548 |
{ |
1549 |
av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); |
1550 |
} |
1551 |
|
1552 |
INLINE SV * |
1553 |
coro_deq (pTHX) |
1554 |
{ |
1555 |
int prio; |
1556 |
|
1557 |
for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) |
1558 |
if (AvFILLp (coro_ready [prio]) >= 0) |
1559 |
return av_shift (coro_ready [prio]); |
1560 |
|
1561 |
return 0; |
1562 |
} |
1563 |
|
1564 |
static int |
1565 |
api_ready (pTHX_ SV *coro_sv) |
1566 |
{ |
1567 |
struct coro *coro; |
1568 |
SV *sv_hook; |
1569 |
void (*xs_hook)(void); |
1570 |
|
1571 |
if (SvROK (coro_sv)) |
1572 |
coro_sv = SvRV (coro_sv); |
1573 |
|
1574 |
coro = SvSTATE (coro_sv); |
1575 |
|
1576 |
if (coro->flags & CF_READY) |
1577 |
return 0; |
1578 |
|
1579 |
coro->flags |= CF_READY; |
1580 |
|
1581 |
sv_hook = coro_nready ? 0 : coro_readyhook; |
1582 |
xs_hook = coro_nready ? 0 : coroapi.readyhook; |
1583 |
|
1584 |
coro_enq (aTHX_ coro); |
1585 |
++coro_nready; |
1586 |
|
1587 |
if (sv_hook) |
1588 |
{ |
1589 |
dSP; |
1590 |
|
1591 |
ENTER; |
1592 |
SAVETMPS; |
1593 |
|
1594 |
PUSHMARK (SP); |
1595 |
PUTBACK; |
1596 |
call_sv (sv_hook, G_VOID | G_DISCARD); |
1597 |
|
1598 |
FREETMPS; |
1599 |
LEAVE; |
1600 |
} |
1601 |
|
1602 |
if (xs_hook) |
1603 |
xs_hook (); |
1604 |
|
1605 |
return 1; |
1606 |
} |
1607 |
|
1608 |
static int |
1609 |
api_is_ready (pTHX_ SV *coro_sv) |
1610 |
{ |
1611 |
return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1612 |
} |
1613 |
|
1614 |
INLINE void |
1615 |
prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
1616 |
{ |
1617 |
SV *prev_sv, *next_sv; |
1618 |
|
1619 |
for (;;) |
1620 |
{ |
1621 |
next_sv = coro_deq (aTHX); |
1622 |
|
1623 |
/* nothing to schedule: call the idle handler */ |
1624 |
if (expect_false (!next_sv)) |
1625 |
{ |
1626 |
dSP; |
1627 |
|
1628 |
ENTER; |
1629 |
SAVETMPS; |
1630 |
|
1631 |
PUSHMARK (SP); |
1632 |
PUTBACK; |
1633 |
call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD); |
1634 |
|
1635 |
FREETMPS; |
1636 |
LEAVE; |
1637 |
continue; |
1638 |
} |
1639 |
|
1640 |
ta->next = SvSTATE_hv (next_sv); |
1641 |
|
1642 |
/* cannot transfer to destroyed coros, skip and look for next */ |
1643 |
if (expect_false (ta->next->flags & CF_DESTROYED)) |
1644 |
{ |
1645 |
SvREFCNT_dec (next_sv); |
1646 |
/* coro_nready has already been taken care of by destroy */ |
1647 |
continue; |
1648 |
} |
1649 |
|
1650 |
--coro_nready; |
1651 |
break; |
1652 |
} |
1653 |
|
1654 |
/* free this only after the transfer */ |
1655 |
prev_sv = SvRV (coro_current); |
1656 |
ta->prev = SvSTATE_hv (prev_sv); |
1657 |
TRANSFER_CHECK (*ta); |
1658 |
assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); |
1659 |
ta->next->flags &= ~CF_READY; |
1660 |
SvRV_set (coro_current, next_sv); |
1661 |
|
1662 |
free_coro_mortal (aTHX); |
1663 |
coro_mortal = prev_sv; |
1664 |
} |
1665 |
|
1666 |
INLINE void |
1667 |
prepare_cede (pTHX_ struct coro_transfer_args *ta) |
1668 |
{ |
1669 |
api_ready (aTHX_ coro_current); |
1670 |
prepare_schedule (aTHX_ ta); |
1671 |
} |
1672 |
|
1673 |
INLINE void |
1674 |
prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
1675 |
{ |
1676 |
SV *prev = SvRV (coro_current); |
1677 |
|
1678 |
if (coro_nready) |
1679 |
{ |
1680 |
prepare_schedule (aTHX_ ta); |
1681 |
api_ready (aTHX_ prev); |
1682 |
} |
1683 |
else |
1684 |
prepare_nop (aTHX_ ta); |
1685 |
} |
1686 |
|
1687 |
static void |
1688 |
api_schedule (pTHX) |
1689 |
{ |
1690 |
struct coro_transfer_args ta; |
1691 |
|
1692 |
prepare_schedule (aTHX_ &ta); |
1693 |
TRANSFER (ta, 1); |
1694 |
} |
1695 |
|
1696 |
static int |
1697 |
api_cede (pTHX) |
1698 |
{ |
1699 |
struct coro_transfer_args ta; |
1700 |
|
1701 |
prepare_cede (aTHX_ &ta); |
1702 |
|
1703 |
if (expect_true (ta.prev != ta.next)) |
1704 |
{ |
1705 |
TRANSFER (ta, 1); |
1706 |
return 1; |
1707 |
} |
1708 |
else |
1709 |
return 0; |
1710 |
} |
1711 |
|
1712 |
static int |
1713 |
api_cede_notself (pTHX) |
1714 |
{ |
1715 |
if (coro_nready) |
1716 |
{ |
1717 |
struct coro_transfer_args ta; |
1718 |
|
1719 |
prepare_cede_notself (aTHX_ &ta); |
1720 |
TRANSFER (ta, 1); |
1721 |
return 1; |
1722 |
} |
1723 |
else |
1724 |
return 0; |
1725 |
} |
1726 |
|
1727 |
static void |
1728 |
api_trace (pTHX_ SV *coro_sv, int flags) |
1729 |
{ |
1730 |
struct coro *coro = SvSTATE (coro_sv); |
1731 |
|
1732 |
if (flags & CC_TRACE) |
1733 |
{ |
1734 |
if (!coro->cctx) |
1735 |
coro->cctx = cctx_new_run (); |
1736 |
else if (!(coro->cctx->flags & CC_TRACE)) |
1737 |
croak ("cannot enable tracing on coroutine with custom stack,"); |
1738 |
|
1739 |
coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
1740 |
} |
1741 |
else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
1742 |
{ |
1743 |
coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
1744 |
|
1745 |
if (coro->flags & CF_RUNNING) |
1746 |
PL_runops = RUNOPS_DEFAULT; |
1747 |
else |
1748 |
coro->slot->runops = RUNOPS_DEFAULT; |
1749 |
} |
1750 |
} |
1751 |
|
1752 |
/*****************************************************************************/ |
1753 |
/* async pool handler */ |
1754 |
|
1755 |
static int |
1756 |
slf_check_pool_handler (pTHX_ struct CoroSLF *frame) |
1757 |
{ |
1758 |
HV *hv = (HV *)SvRV (coro_current); |
1759 |
struct coro *coro = (struct coro *)frame->data; |
1760 |
|
1761 |
if (!coro->invoke_cb) |
1762 |
return 1; /* loop till we have invoke */ |
1763 |
else |
1764 |
{ |
1765 |
hv_store (hv, "desc", sizeof ("desc") - 1, |
1766 |
newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
1767 |
|
1768 |
coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
1769 |
|
1770 |
{ |
1771 |
dSP; |
1772 |
XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0; |
1773 |
PUTBACK; |
1774 |
} |
1775 |
|
1776 |
SvREFCNT_dec (GvAV (PL_defgv)); |
1777 |
GvAV (PL_defgv) = coro->invoke_av; |
1778 |
coro->invoke_av = 0; |
1779 |
|
1780 |
return 0; |
1781 |
} |
1782 |
} |
1783 |
|
1784 |
static void |
1785 |
slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
1786 |
{ |
1787 |
HV *hv = (HV *)SvRV (coro_current); |
1788 |
struct coro *coro = SvSTATE_hv ((SV *)hv); |
1789 |
|
1790 |
if (expect_true (coro->saved_deffh)) |
1791 |
{ |
1792 |
/* subsequent iteration */ |
1793 |
SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
1794 |
coro->saved_deffh = 0; |
1795 |
|
1796 |
if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
1797 |
|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
1798 |
{ |
1799 |
coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); |
1800 |
coro->invoke_av = newAV (); |
1801 |
|
1802 |
frame->prepare = prepare_nop; |
1803 |
} |
1804 |
else |
1805 |
{ |
1806 |
av_clear (GvAV (PL_defgv)); |
1807 |
hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); |
1808 |
|
1809 |
coro->prio = 0; |
1810 |
|
1811 |
if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
1812 |
api_trace (aTHX_ coro_current, 0); |
1813 |
|
1814 |
frame->prepare = prepare_schedule; |
1815 |
av_push (av_async_pool, SvREFCNT_inc (hv)); |
1816 |
} |
1817 |
} |
1818 |
else |
1819 |
{ |
1820 |
/* first iteration, simply fall through */ |
1821 |
frame->prepare = prepare_nop; |
1822 |
} |
1823 |
|
1824 |
frame->check = slf_check_pool_handler; |
1825 |
frame->data = (void *)coro; |
1826 |
} |
1827 |
|
1828 |
/*****************************************************************************/ |
1829 |
/* rouse callback */ |
1830 |
|
1831 |
#define CORO_MAGIC_type_rouse PERL_MAGIC_ext |
1832 |
|
1833 |
static void |
1834 |
coro_rouse_callback (pTHX_ CV *cv) |
1835 |
{ |
1836 |
dXSARGS; |
1837 |
SV *data = (SV *)GENSUB_ARG; |
1838 |
|
1839 |
if (SvTYPE (SvRV (data)) != SVt_PVAV) |
1840 |
{ |
1841 |
/* first call, set args */ |
1842 |
AV *av = newAV (); |
1843 |
SV *coro = SvRV (data); |
1844 |
|
1845 |
SvRV_set (data, (SV *)av); |
1846 |
api_ready (aTHX_ coro); |
1847 |
SvREFCNT_dec (coro); |
1848 |
|
1849 |
/* better take a full copy of the arguments */ |
1850 |
while (items--) |
1851 |
av_store (av, items, newSVsv (ST (items))); |
1852 |
} |
1853 |
|
1854 |
XSRETURN_EMPTY; |
1855 |
} |
1856 |
|
1857 |
static int |
1858 |
slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) |
1859 |
{ |
1860 |
SV *data = (SV *)frame->data; |
1861 |
|
1862 |
if (CORO_THROW) |
1863 |
return 0; |
1864 |
|
1865 |
if (SvTYPE (SvRV (data)) != SVt_PVAV) |
1866 |
return 1; |
1867 |
|
1868 |
/* now push all results on the stack */ |
1869 |
{ |
1870 |
dSP; |
1871 |
AV *av = (AV *)SvRV (data); |
1872 |
int i; |
1873 |
|
1874 |
EXTEND (SP, AvFILLp (av) + 1); |
1875 |
for (i = 0; i <= AvFILLp (av); ++i) |
1876 |
PUSHs (sv_2mortal (AvARRAY (av)[i])); |
1877 |
|
1878 |
/* we have stolen the elements, so ste length to zero and free */ |
1879 |
AvFILLp (av) = -1; |
1880 |
av_undef (av); |
1881 |
|
1882 |
PUTBACK; |
1883 |
} |
1884 |
|
1885 |
return 0; |
1886 |
} |
1887 |
|
1888 |
static void |
1889 |
slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
1890 |
{ |
1891 |
SV *cb; |
1892 |
|
1893 |
if (items) |
1894 |
cb = arg [0]; |
1895 |
else |
1896 |
{ |
1897 |
struct coro *coro = SvSTATE_current; |
1898 |
|
1899 |
if (!coro->rouse_cb) |
1900 |
croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,"); |
1901 |
|
1902 |
cb = sv_2mortal (coro->rouse_cb); |
1903 |
coro->rouse_cb = 0; |
1904 |
} |
1905 |
|
1906 |
if (!SvROK (cb) |
1907 |
|| SvTYPE (SvRV (cb)) != SVt_PVCV |
1908 |
|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) |
1909 |
croak ("Coro::rouse_wait called with illegal callback argument,"); |
1910 |
|
1911 |
{ |
1912 |
CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ |
1913 |
SV *data = (SV *)GENSUB_ARG; |
1914 |
|
1915 |
frame->data = (void *)data; |
1916 |
frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; |
1917 |
frame->check = slf_check_rouse_wait; |
1918 |
} |
1919 |
} |
1920 |
|
1921 |
static SV * |
1922 |
coro_new_rouse_cb (pTHX) |
1923 |
{ |
1924 |
HV *hv = (HV *)SvRV (coro_current); |
1925 |
struct coro *coro = SvSTATE_hv (hv); |
1926 |
SV *data = newRV_inc ((SV *)hv); |
1927 |
SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); |
1928 |
|
1929 |
sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); |
1930 |
SvREFCNT_dec (data); /* magicext increases the refcount */ |
1931 |
|
1932 |
SvREFCNT_dec (coro->rouse_cb); |
1933 |
coro->rouse_cb = SvREFCNT_inc_NN (cb); |
1934 |
|
1935 |
return cb; |
1936 |
} |
1937 |
|
1938 |
/*****************************************************************************/ |
1939 |
/* schedule-like-function opcode (SLF) */ |
1940 |
|
1941 |
static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
1942 |
static const CV *slf_cv; |
1943 |
static SV **slf_argv; |
1944 |
static int slf_argc, slf_arga; /* count, allocated */ |
1945 |
static I32 slf_ax; /* top of stack, for restore */ |
1946 |
|
1947 |
/* this restores the stack in the case we patched the entersub, to */ |
1948 |
/* recreate the stack frame as perl will on following calls */ |
1949 |
/* since entersub cleared the stack */ |
1950 |
static OP * |
1951 |
pp_restore (pTHX) |
1952 |
{ |
1953 |
int i; |
1954 |
SV **SP = PL_stack_base + slf_ax; |
1955 |
|
1956 |
PUSHMARK (SP); |
1957 |
|
1958 |
EXTEND (SP, slf_argc + 1); |
1959 |
|
1960 |
for (i = 0; i < slf_argc; ++i) |
1961 |
PUSHs (sv_2mortal (slf_argv [i])); |
1962 |
|
1963 |
PUSHs ((SV *)CvGV (slf_cv)); |
1964 |
|
1965 |
RETURNOP (slf_restore.op_first); |
1966 |
} |
1967 |
|
1968 |
static void |
1969 |
slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
1970 |
{ |
1971 |
SV **arg = (SV **)slf_frame.data; |
1972 |
|
1973 |
prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
1974 |
} |
1975 |
|
1976 |
static void |
1977 |
slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
1978 |
{ |
1979 |
if (items != 2) |
1980 |
croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
1981 |
|
1982 |
frame->prepare = slf_prepare_transfer; |
1983 |
frame->check = slf_check_nop; |
1984 |
frame->data = (void *)arg; /* let's hope it will stay valid */ |
1985 |
} |
1986 |
|
1987 |
static void |
1988 |
slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
1989 |
{ |
1990 |
frame->prepare = prepare_schedule; |
1991 |
frame->check = slf_check_nop; |
1992 |
} |
1993 |
|
1994 |
static void |
1995 |
slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
1996 |
{ |
1997 |
frame->prepare = prepare_cede; |
1998 |
frame->check = slf_check_nop; |
1999 |
} |
2000 |
|
2001 |
static void |
2002 |
slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2003 |
{ |
2004 |
frame->prepare = prepare_cede_notself; |
2005 |
frame->check = slf_check_nop; |
2006 |
} |
2007 |
|
2008 |
/* |
2009 |
* these not obviously related functions are all rolled into one |
2010 |
* function to increase chances that they all will call transfer with the same |
2011 |
* stack offset |
2012 |
* SLF stands for "schedule-like-function". |
2013 |
*/ |
2014 |
static OP * |
2015 |
pp_slf (pTHX) |
2016 |
{ |
2017 |
I32 checkmark; /* mark SP to see how many elements check has pushed */ |
2018 |
|
2019 |
/* set up the slf frame, unless it has already been set-up */ |
2020 |
/* the latter happens when a new coro has been started */ |
2021 |
/* or when a new cctx was attached to an existing coroutine */ |
2022 |
if (expect_true (!slf_frame.prepare)) |
2023 |
{ |
2024 |
/* first iteration */ |
2025 |
dSP; |
2026 |
SV **arg = PL_stack_base + TOPMARK + 1; |
2027 |
int items = SP - arg; /* args without function object */ |
2028 |
SV *gv = *sp; |
2029 |
|
2030 |
/* do a quick consistency check on the "function" object, and if it isn't */ |
2031 |
/* for us, divert to the real entersub */ |
2032 |
if (SvTYPE (gv) != SVt_PVGV |
2033 |
|| !GvCV (gv) |
2034 |
|| !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
2035 |
return PL_ppaddr[OP_ENTERSUB](aTHX); |
2036 |
|
2037 |
if (!(PL_op->op_flags & OPf_STACKED)) |
2038 |
{ |
2039 |
/* ampersand-form of call, use @_ instead of stack */ |
2040 |
AV *av = GvAV (PL_defgv); |
2041 |
arg = AvARRAY (av); |
2042 |
items = AvFILLp (av) + 1; |
2043 |
} |
2044 |
|
2045 |
/* now call the init function, which needs to set up slf_frame */ |
2046 |
((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
2047 |
(aTHX_ &slf_frame, GvCV (gv), arg, items); |
2048 |
|
2049 |
/* pop args */ |
2050 |
SP = PL_stack_base + POPMARK; |
2051 |
|
2052 |
PUTBACK; |
2053 |
} |
2054 |
|
2055 |
/* now that we have a slf_frame, interpret it! */ |
2056 |
/* we use a callback system not to make the code needlessly */ |
2057 |
/* complicated, but so we can run multiple perl coros from one cctx */ |
2058 |
|
2059 |
do |
2060 |
{ |
2061 |
struct coro_transfer_args ta; |
2062 |
|
2063 |
slf_frame.prepare (aTHX_ &ta); |
2064 |
TRANSFER (ta, 0); |
2065 |
|
2066 |
checkmark = PL_stack_sp - PL_stack_base; |
2067 |
} |
2068 |
while (slf_frame.check (aTHX_ &slf_frame)); |
2069 |
|
2070 |
slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ |
2071 |
|
2072 |
/* exception handling */ |
2073 |
if (expect_false (CORO_THROW)) |
2074 |
{ |
2075 |
SV *exception = sv_2mortal (CORO_THROW); |
2076 |
|
2077 |
CORO_THROW = 0; |
2078 |
sv_setsv (ERRSV, exception); |
2079 |
croak (0); |
2080 |
} |
2081 |
|
2082 |
/* return value handling - mostly like entersub */ |
2083 |
/* make sure we put something on the stack in scalar context */ |
2084 |
if (GIMME_V == G_SCALAR) |
2085 |
{ |
2086 |
dSP; |
2087 |
SV **bot = PL_stack_base + checkmark; |
2088 |
|
2089 |
if (sp == bot) /* too few, push undef */ |
2090 |
bot [1] = &PL_sv_undef; |
2091 |
else if (sp != bot + 1) /* too many, take last one */ |
2092 |
bot [1] = *sp; |
2093 |
|
2094 |
SP = bot + 1; |
2095 |
|
2096 |
PUTBACK; |
2097 |
} |
2098 |
|
2099 |
return NORMAL; |
2100 |
} |
2101 |
|
2102 |
static void |
2103 |
api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax) |
2104 |
{ |
2105 |
int i; |
2106 |
SV **arg = PL_stack_base + ax; |
2107 |
int items = PL_stack_sp - arg + 1; |
2108 |
|
2109 |
assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
2110 |
|
2111 |
if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
2112 |
&& PL_op->op_ppaddr != pp_slf) |
2113 |
croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
2114 |
|
2115 |
CvFLAGS (cv) |= CVf_SLF; |
2116 |
CvXSUBANY (cv).any_ptr = (void *)init_cb; |
2117 |
slf_cv = cv; |
2118 |
|
2119 |
/* we patch the op, and then re-run the whole call */ |
2120 |
/* we have to put the same argument on the stack for this to work */ |
2121 |
/* and this will be done by pp_restore */ |
2122 |
slf_restore.op_next = (OP *)&slf_restore; |
2123 |
slf_restore.op_type = OP_CUSTOM; |
2124 |
slf_restore.op_ppaddr = pp_restore; |
2125 |
slf_restore.op_first = PL_op; |
2126 |
|
2127 |
slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */ |
2128 |
|
2129 |
if (PL_op->op_flags & OPf_STACKED) |
2130 |
{ |
2131 |
if (items > slf_arga) |
2132 |
{ |
2133 |
slf_arga = items; |
2134 |
free (slf_argv); |
2135 |
slf_argv = malloc (slf_arga * sizeof (SV *)); |
2136 |
} |
2137 |
|
2138 |
slf_argc = items; |
2139 |
|
2140 |
for (i = 0; i < items; ++i) |
2141 |
slf_argv [i] = SvREFCNT_inc (arg [i]); |
2142 |
} |
2143 |
else |
2144 |
slf_argc = 0; |
2145 |
|
2146 |
PL_op->op_ppaddr = pp_slf; |
2147 |
PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ |
2148 |
|
2149 |
PL_op = (OP *)&slf_restore; |
2150 |
} |
2151 |
|
2152 |
/*****************************************************************************/ |
2153 |
/* PerlIO::cede */ |
2154 |
|
2155 |
typedef struct |
2156 |
{ |
2157 |
PerlIOBuf base; |
2158 |
NV next, every; |
2159 |
} PerlIOCede; |
2160 |
|
2161 |
static IV |
2162 |
PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
2163 |
{ |
2164 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
2165 |
|
2166 |
self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
2167 |
self->next = nvtime () + self->every; |
2168 |
|
2169 |
return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
2170 |
} |
2171 |
|
2172 |
static SV * |
2173 |
PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
2174 |
{ |
2175 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
2176 |
|
2177 |
return newSVnv (self->every); |
2178 |
} |
2179 |
|
2180 |
static IV |
2181 |
PerlIOCede_flush (pTHX_ PerlIO *f) |
2182 |
{ |
2183 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
2184 |
double now = nvtime (); |
2185 |
|
2186 |
if (now >= self->next) |
2187 |
{ |
2188 |
api_cede (aTHX); |
2189 |
self->next = now + self->every; |
2190 |
} |
2191 |
|
2192 |
return PerlIOBuf_flush (aTHX_ f); |
2193 |
} |
2194 |
|
2195 |
static PerlIO_funcs PerlIO_cede = |
2196 |
{ |
2197 |
sizeof(PerlIO_funcs), |
2198 |
"cede", |
2199 |
sizeof(PerlIOCede), |
2200 |
PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
2201 |
PerlIOCede_pushed, |
2202 |
PerlIOBuf_popped, |
2203 |
PerlIOBuf_open, |
2204 |
PerlIOBase_binmode, |
2205 |
PerlIOCede_getarg, |
2206 |
PerlIOBase_fileno, |
2207 |
PerlIOBuf_dup, |
2208 |
PerlIOBuf_read, |
2209 |
PerlIOBuf_unread, |
2210 |
PerlIOBuf_write, |
2211 |
PerlIOBuf_seek, |
2212 |
PerlIOBuf_tell, |
2213 |
PerlIOBuf_close, |
2214 |
PerlIOCede_flush, |
2215 |
PerlIOBuf_fill, |
2216 |
PerlIOBase_eof, |
2217 |
PerlIOBase_error, |
2218 |
PerlIOBase_clearerr, |
2219 |
PerlIOBase_setlinebuf, |
2220 |
PerlIOBuf_get_base, |
2221 |
PerlIOBuf_bufsiz, |
2222 |
PerlIOBuf_get_ptr, |
2223 |
PerlIOBuf_get_cnt, |
2224 |
PerlIOBuf_set_ptrcnt, |
2225 |
}; |
2226 |
|
2227 |
/*****************************************************************************/ |
2228 |
/* Coro::Semaphore & Coro::Signal */ |
2229 |
|
2230 |
static SV * |
2231 |
coro_waitarray_new (pTHX_ int count) |
2232 |
{ |
2233 |
/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
2234 |
AV *av = newAV (); |
2235 |
SV **ary; |
2236 |
|
2237 |
/* unfortunately, building manually saves memory */ |
2238 |
Newx (ary, 2, SV *); |
2239 |
AvALLOC (av) = ary; |
2240 |
/*AvARRAY (av) = ary;*/ |
2241 |
SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ |
2242 |
AvMAX (av) = 1; |
2243 |
AvFILLp (av) = 0; |
2244 |
ary [0] = newSViv (count); |
2245 |
|
2246 |
return newRV_noinc ((SV *)av); |
2247 |
} |
2248 |
|
2249 |
/* semaphore */ |
2250 |
|
2251 |
static void |
2252 |
coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
2253 |
{ |
2254 |
SV *count_sv = AvARRAY (av)[0]; |
2255 |
IV count = SvIVX (count_sv); |
2256 |
|
2257 |
count += adjust; |
2258 |
SvIVX (count_sv) = count; |
2259 |
|
2260 |
/* now wake up as many waiters as are expected to lock */ |
2261 |
while (count > 0 && AvFILLp (av) > 0) |
2262 |
{ |
2263 |
SV *cb; |
2264 |
|
2265 |
/* swap first two elements so we can shift a waiter */ |
2266 |
AvARRAY (av)[0] = AvARRAY (av)[1]; |
2267 |
AvARRAY (av)[1] = count_sv; |
2268 |
cb = av_shift (av); |
2269 |
|
2270 |
if (SvOBJECT (cb)) |
2271 |
{ |
2272 |
api_ready (aTHX_ cb); |
2273 |
--count; |
2274 |
} |
2275 |
else if (SvTYPE (cb) == SVt_PVCV) |
2276 |
{ |
2277 |
dSP; |
2278 |
PUSHMARK (SP); |
2279 |
XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
2280 |
PUTBACK; |
2281 |
call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
2282 |
} |
2283 |
|
2284 |
SvREFCNT_dec (cb); |
2285 |
} |
2286 |
} |
2287 |
|
2288 |
static void |
2289 |
coro_semaphore_on_destroy (pTHX_ struct coro *coro) |
2290 |
{ |
2291 |
/* call $sem->adjust (0) to possibly wake up some other waiters */ |
2292 |
coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); |
2293 |
} |
2294 |
|
2295 |
static int |
2296 |
slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) |
2297 |
{ |
2298 |
AV *av = (AV *)frame->data; |
2299 |
SV *count_sv = AvARRAY (av)[0]; |
2300 |
|
2301 |
/* if we are about to throw, don't actually acquire the lock, just throw */ |
2302 |
if (CORO_THROW) |
2303 |
return 0; |
2304 |
else if (SvIVX (count_sv) > 0) |
2305 |
{ |
2306 |
SvSTATE_current->on_destroy = 0; |
2307 |
|
2308 |
if (acquire) |
2309 |
SvIVX (count_sv) = SvIVX (count_sv) - 1; |
2310 |
else |
2311 |
coro_semaphore_adjust (aTHX_ av, 0); |
2312 |
|
2313 |
return 0; |
2314 |
} |
2315 |
else |
2316 |
{ |
2317 |
int i; |
2318 |
/* if we were woken up but can't down, we look through the whole */ |
2319 |
/* waiters list and only add us if we aren't in there already */ |
2320 |
/* this avoids some degenerate memory usage cases */ |
2321 |
|
2322 |
for (i = 1; i <= AvFILLp (av); ++i) |
2323 |
if (AvARRAY (av)[i] == SvRV (coro_current)) |
2324 |
return 1; |
2325 |
|
2326 |
av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
2327 |
return 1; |
2328 |
} |
2329 |
} |
2330 |
|
2331 |
static int |
2332 |
slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
2333 |
{ |
2334 |
return slf_check_semaphore_down_or_wait (aTHX_ frame, 1); |
2335 |
} |
2336 |
|
2337 |
static int |
2338 |
slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame) |
2339 |
{ |
2340 |
return slf_check_semaphore_down_or_wait (aTHX_ frame, 0); |
2341 |
} |
2342 |
|
2343 |
static void |
2344 |
slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2345 |
{ |
2346 |
AV *av = (AV *)SvRV (arg [0]); |
2347 |
|
2348 |
if (SvIVX (AvARRAY (av)[0]) > 0) |
2349 |
{ |
2350 |
frame->data = (void *)av; |
2351 |
frame->prepare = prepare_nop; |
2352 |
} |
2353 |
else |
2354 |
{ |
2355 |
av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
2356 |
|
2357 |
frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
2358 |
frame->prepare = prepare_schedule; |
2359 |
|
2360 |
/* to avoid race conditions when a woken-up coro gets terminated */ |
2361 |
/* we arrange for a temporary on_destroy that calls adjust (0) */ |
2362 |
SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
2363 |
} |
2364 |
} |
2365 |
|
2366 |
static void |
2367 |
slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2368 |
{ |
2369 |
slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
2370 |
frame->check = slf_check_semaphore_down; |
2371 |
} |
2372 |
|
2373 |
static void |
2374 |
slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2375 |
{ |
2376 |
if (items >= 2) |
2377 |
{ |
2378 |
/* callback form */ |
2379 |
AV *av = (AV *)SvRV (arg [0]); |
2380 |
CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]); |
2381 |
|
2382 |
av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); |
2383 |
|
2384 |
if (SvIVX (AvARRAY (av)[0]) > 0) |
2385 |
coro_semaphore_adjust (aTHX_ av, 0); |
2386 |
|
2387 |
frame->prepare = prepare_nop; |
2388 |
frame->check = slf_check_nop; |
2389 |
} |
2390 |
else |
2391 |
{ |
2392 |
slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
2393 |
frame->check = slf_check_semaphore_wait; |
2394 |
} |
2395 |
} |
2396 |
|
2397 |
/* signal */ |
2398 |
|
2399 |
static void |
2400 |
coro_signal_wake (pTHX_ AV *av, int count) |
2401 |
{ |
2402 |
SvIVX (AvARRAY (av)[0]) = 0; |
2403 |
|
2404 |
/* now signal count waiters */ |
2405 |
while (count > 0 && AvFILLp (av) > 0) |
2406 |
{ |
2407 |
SV *cb; |
2408 |
|
2409 |
/* swap first two elements so we can shift a waiter */ |
2410 |
cb = AvARRAY (av)[0]; |
2411 |
AvARRAY (av)[0] = AvARRAY (av)[1]; |
2412 |
AvARRAY (av)[1] = cb; |
2413 |
|
2414 |
cb = av_shift (av); |
2415 |
|
2416 |
api_ready (aTHX_ cb); |
2417 |
sv_setiv (cb, 0); /* signal waiter */ |
2418 |
SvREFCNT_dec (cb); |
2419 |
|
2420 |
--count; |
2421 |
} |
2422 |
} |
2423 |
|
2424 |
static int |
2425 |
slf_check_signal_wait (pTHX_ struct CoroSLF *frame) |
2426 |
{ |
2427 |
/* if we are about to throw, also stop waiting */ |
2428 |
return SvROK ((SV *)frame->data) && !CORO_THROW; |
2429 |
} |
2430 |
|
2431 |
static void |
2432 |
slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2433 |
{ |
2434 |
AV *av = (AV *)SvRV (arg [0]); |
2435 |
|
2436 |
if (SvIVX (AvARRAY (av)[0])) |
2437 |
{ |
2438 |
SvIVX (AvARRAY (av)[0]) = 0; |
2439 |
frame->prepare = prepare_nop; |
2440 |
frame->check = slf_check_nop; |
2441 |
} |
2442 |
else |
2443 |
{ |
2444 |
SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ |
2445 |
|
2446 |
av_push (av, waiter); |
2447 |
|
2448 |
frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ |
2449 |
frame->prepare = prepare_schedule; |
2450 |
frame->check = slf_check_signal_wait; |
2451 |
} |
2452 |
} |
2453 |
|
2454 |
/*****************************************************************************/ |
2455 |
/* Coro::AIO */ |
2456 |
|
2457 |
#define CORO_MAGIC_type_aio PERL_MAGIC_ext |
2458 |
|
2459 |
/* helper storage struct */ |
2460 |
struct io_state |
2461 |
{ |
2462 |
int errorno; |
2463 |
I32 laststype; /* U16 in 5.10.0 */ |
2464 |
int laststatval; |
2465 |
Stat_t statcache; |
2466 |
}; |
2467 |
|
2468 |
static void |
2469 |
coro_aio_callback (pTHX_ CV *cv) |
2470 |
{ |
2471 |
dXSARGS; |
2472 |
AV *state = (AV *)GENSUB_ARG; |
2473 |
SV *coro = av_pop (state); |
2474 |
SV *data_sv = newSV (sizeof (struct io_state)); |
2475 |
|
2476 |
av_extend (state, items - 1); |
2477 |
|
2478 |
sv_upgrade (data_sv, SVt_PV); |
2479 |
SvCUR_set (data_sv, sizeof (struct io_state)); |
2480 |
SvPOK_only (data_sv); |
2481 |
|
2482 |
{ |
2483 |
struct io_state *data = (struct io_state *)SvPVX (data_sv); |
2484 |
|
2485 |
data->errorno = errno; |
2486 |
data->laststype = PL_laststype; |
2487 |
data->laststatval = PL_laststatval; |
2488 |
data->statcache = PL_statcache; |
2489 |
} |
2490 |
|
2491 |
/* now build the result vector out of all the parameters and the data_sv */ |
2492 |
{ |
2493 |
int i; |
2494 |
|
2495 |
for (i = 0; i < items; ++i) |
2496 |
av_push (state, SvREFCNT_inc_NN (ST (i))); |
2497 |
} |
2498 |
|
2499 |
av_push (state, data_sv); |
2500 |
|
2501 |
api_ready (aTHX_ coro); |
2502 |
SvREFCNT_dec (coro); |
2503 |
SvREFCNT_dec ((AV *)state); |
2504 |
} |
2505 |
|
2506 |
static int |
2507 |
slf_check_aio_req (pTHX_ struct CoroSLF *frame) |
2508 |
{ |
2509 |
AV *state = (AV *)frame->data; |
2510 |
|
2511 |
/* if we are about to throw, return early */ |
2512 |
/* this does not cancel the aio request, but at least */ |
2513 |
/* it quickly returns */ |
2514 |
if (CORO_THROW) |
2515 |
return 0; |
2516 |
|
2517 |
/* one element that is an RV? repeat! */ |
2518 |
if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) |
2519 |
return 1; |
2520 |
|
2521 |
/* restore status */ |
2522 |
{ |
2523 |
SV *data_sv = av_pop (state); |
2524 |
struct io_state *data = (struct io_state *)SvPVX (data_sv); |
2525 |
|
2526 |
errno = data->errorno; |
2527 |
PL_laststype = data->laststype; |
2528 |
PL_laststatval = data->laststatval; |
2529 |
PL_statcache = data->statcache; |
2530 |
|
2531 |
SvREFCNT_dec (data_sv); |
2532 |
} |
2533 |
|
2534 |
/* push result values */ |
2535 |
{ |
2536 |
dSP; |
2537 |
int i; |
2538 |
|
2539 |
EXTEND (SP, AvFILLp (state) + 1); |
2540 |
for (i = 0; i <= AvFILLp (state); ++i) |
2541 |
PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i]))); |
2542 |
|
2543 |
PUTBACK; |
2544 |
} |
2545 |
|
2546 |
return 0; |
2547 |
} |
2548 |
|
2549 |
static void |
2550 |
slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2551 |
{ |
2552 |
AV *state = (AV *)sv_2mortal ((SV *)newAV ()); |
2553 |
SV *coro_hv = SvRV (coro_current); |
2554 |
struct coro *coro = SvSTATE_hv (coro_hv); |
2555 |
|
2556 |
/* put our coroutine id on the state arg */ |
2557 |
av_push (state, SvREFCNT_inc_NN (coro_hv)); |
2558 |
|
2559 |
/* first see whether we have a non-zero priority and set it as AIO prio */ |
2560 |
if (coro->prio) |
2561 |
{ |
2562 |
dSP; |
2563 |
|
2564 |
static SV *prio_cv; |
2565 |
static SV *prio_sv; |
2566 |
|
2567 |
if (expect_false (!prio_cv)) |
2568 |
{ |
2569 |
prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); |
2570 |
prio_sv = newSViv (0); |
2571 |
} |
2572 |
|
2573 |
PUSHMARK (SP); |
2574 |
sv_setiv (prio_sv, coro->prio); |
2575 |
XPUSHs (prio_sv); |
2576 |
|
2577 |
PUTBACK; |
2578 |
call_sv (prio_cv, G_VOID | G_DISCARD); |
2579 |
} |
2580 |
|
2581 |
/* now call the original request */ |
2582 |
{ |
2583 |
dSP; |
2584 |
CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj; |
2585 |
int i; |
2586 |
|
2587 |
PUSHMARK (SP); |
2588 |
|
2589 |
/* first push all args to the stack */ |
2590 |
EXTEND (SP, items + 1); |
2591 |
|
2592 |
for (i = 0; i < items; ++i) |
2593 |
PUSHs (arg [i]); |
2594 |
|
2595 |
/* now push the callback closure */ |
2596 |
PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); |
2597 |
|
2598 |
/* now call the AIO function - we assume our request is uncancelable */ |
2599 |
PUTBACK; |
2600 |
call_sv ((SV *)req, G_VOID | G_DISCARD); |
2601 |
} |
2602 |
|
2603 |
/* now that the requets is going, we loop toll we have a result */ |
2604 |
frame->data = (void *)state; |
2605 |
frame->prepare = prepare_schedule; |
2606 |
frame->check = slf_check_aio_req; |
2607 |
} |
2608 |
|
2609 |
static void |
2610 |
coro_aio_req_xs (pTHX_ CV *cv) |
2611 |
{ |
2612 |
dXSARGS; |
2613 |
|
2614 |
CORO_EXECUTE_SLF_XS (slf_init_aio_req); |
2615 |
|
2616 |
XSRETURN_EMPTY; |
2617 |
} |
2618 |
|
2619 |
/*****************************************************************************/ |
2620 |
|
2621 |
MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
2622 |
|
2623 |
PROTOTYPES: DISABLE |
2624 |
|
2625 |
BOOT: |
2626 |
{ |
2627 |
#ifdef USE_ITHREADS |
2628 |
# if CORO_PTHREAD |
2629 |
coro_thx = PERL_GET_CONTEXT; |
2630 |
# endif |
2631 |
#endif |
2632 |
BOOT_PAGESIZE; |
2633 |
|
2634 |
irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
2635 |
stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
2636 |
|
2637 |
orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
2638 |
orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
2639 |
orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
2640 |
|
2641 |
hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
2642 |
rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
2643 |
rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
2644 |
|
2645 |
coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
2646 |
|
2647 |
newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
2648 |
newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
2649 |
newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
2650 |
newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
2651 |
|
2652 |
main_mainstack = PL_mainstack; |
2653 |
main_top_env = PL_top_env; |
2654 |
|
2655 |
while (main_top_env->je_prev) |
2656 |
main_top_env = main_top_env->je_prev; |
2657 |
|
2658 |
{ |
2659 |
SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); |
2660 |
|
2661 |
if (!PL_custom_op_names) PL_custom_op_names = newHV (); |
2662 |
hv_store_ent (PL_custom_op_names, slf, |
2663 |
newSVpv ("coro_slf", 0), 0); |
2664 |
|
2665 |
if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); |
2666 |
hv_store_ent (PL_custom_op_descs, slf, |
2667 |
newSVpv ("coro schedule like function", 0), 0); |
2668 |
} |
2669 |
|
2670 |
coroapi.ver = CORO_API_VERSION; |
2671 |
coroapi.rev = CORO_API_REVISION; |
2672 |
|
2673 |
coroapi.transfer = api_transfer; |
2674 |
|
2675 |
coroapi.sv_state = SvSTATE_; |
2676 |
coroapi.execute_slf = api_execute_slf; |
2677 |
coroapi.prepare_nop = prepare_nop; |
2678 |
coroapi.prepare_schedule = prepare_schedule; |
2679 |
coroapi.prepare_cede = prepare_cede; |
2680 |
coroapi.prepare_cede_notself = prepare_cede_notself; |
2681 |
|
2682 |
{ |
2683 |
SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
2684 |
|
2685 |
if (!svp) croak ("Time::HiRes is required"); |
2686 |
if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); |
2687 |
|
2688 |
nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
2689 |
} |
2690 |
|
2691 |
assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
2692 |
} |
2693 |
|
2694 |
SV * |
2695 |
new (char *klass, ...) |
2696 |
ALIAS: |
2697 |
Coro::new = 1 |
2698 |
CODE: |
2699 |
{ |
2700 |
struct coro *coro; |
2701 |
MAGIC *mg; |
2702 |
HV *hv; |
2703 |
CV *cb; |
2704 |
int i; |
2705 |
|
2706 |
if (items > 1) |
2707 |
{ |
2708 |
cb = coro_sv_2cv (aTHX_ ST (1)); |
2709 |
|
2710 |
if (!ix) |
2711 |
{ |
2712 |
if (CvISXSUB (cb)) |
2713 |
croak ("Coro::State doesn't support XS functions as coroutine start, caught"); |
2714 |
|
2715 |
if (!CvROOT (cb)) |
2716 |
croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught"); |
2717 |
} |
2718 |
} |
2719 |
|
2720 |
Newz (0, coro, 1, struct coro); |
2721 |
coro->args = newAV (); |
2722 |
coro->flags = CF_NEW; |
2723 |
|
2724 |
if (coro_first) coro_first->prev = coro; |
2725 |
coro->next = coro_first; |
2726 |
coro_first = coro; |
2727 |
|
2728 |
coro->hv = hv = newHV (); |
2729 |
mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
2730 |
mg->mg_flags |= MGf_DUP; |
2731 |
RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
2732 |
|
2733 |
if (items > 1) |
2734 |
{ |
2735 |
av_extend (coro->args, items - 1 + ix - 1); |
2736 |
|
2737 |
if (ix) |
2738 |
{ |
2739 |
av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb)); |
2740 |
cb = cv_coro_run; |
2741 |
} |
2742 |
|
2743 |
coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb); |
2744 |
|
2745 |
for (i = 2; i < items; i++) |
2746 |
av_push (coro->args, newSVsv (ST (i))); |
2747 |
} |
2748 |
} |
2749 |
OUTPUT: |
2750 |
RETVAL |
2751 |
|
2752 |
void |
2753 |
transfer (...) |
2754 |
PROTOTYPE: $$ |
2755 |
CODE: |
2756 |
CORO_EXECUTE_SLF_XS (slf_init_transfer); |
2757 |
|
2758 |
bool |
2759 |
_destroy (SV *coro_sv) |
2760 |
CODE: |
2761 |
RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
2762 |
OUTPUT: |
2763 |
RETVAL |
2764 |
|
2765 |
void |
2766 |
_exit (int code) |
2767 |
PROTOTYPE: $ |
2768 |
CODE: |
2769 |
_exit (code); |
2770 |
|
2771 |
int |
2772 |
cctx_stacksize (int new_stacksize = 0) |
2773 |
PROTOTYPE: ;$ |
2774 |
CODE: |
2775 |
RETVAL = cctx_stacksize; |
2776 |
if (new_stacksize) |
2777 |
{ |
2778 |
cctx_stacksize = new_stacksize; |
2779 |
++cctx_gen; |
2780 |
} |
2781 |
OUTPUT: |
2782 |
RETVAL |
2783 |
|
2784 |
int |
2785 |
cctx_max_idle (int max_idle = 0) |
2786 |
PROTOTYPE: ;$ |
2787 |
CODE: |
2788 |
RETVAL = cctx_max_idle; |
2789 |
if (max_idle > 1) |
2790 |
cctx_max_idle = max_idle; |
2791 |
OUTPUT: |
2792 |
RETVAL |
2793 |
|
2794 |
int |
2795 |
cctx_count () |
2796 |
PROTOTYPE: |
2797 |
CODE: |
2798 |
RETVAL = cctx_count; |
2799 |
OUTPUT: |
2800 |
RETVAL |
2801 |
|
2802 |
int |
2803 |
cctx_idle () |
2804 |
PROTOTYPE: |
2805 |
CODE: |
2806 |
RETVAL = cctx_idle; |
2807 |
OUTPUT: |
2808 |
RETVAL |
2809 |
|
2810 |
void |
2811 |
list () |
2812 |
PROTOTYPE: |
2813 |
PPCODE: |
2814 |
{ |
2815 |
struct coro *coro; |
2816 |
for (coro = coro_first; coro; coro = coro->next) |
2817 |
if (coro->hv) |
2818 |
XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
2819 |
} |
2820 |
|
2821 |
void |
2822 |
call (Coro::State coro, SV *coderef) |
2823 |
ALIAS: |
2824 |
eval = 1 |
2825 |
CODE: |
2826 |
{ |
2827 |
if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
2828 |
{ |
2829 |
struct coro temp; |
2830 |
|
2831 |
if (!(coro->flags & CF_RUNNING)) |
2832 |
{ |
2833 |
PUTBACK; |
2834 |
save_perl (aTHX_ &temp); |
2835 |
load_perl (aTHX_ coro); |
2836 |
} |
2837 |
|
2838 |
{ |
2839 |
dSP; |
2840 |
ENTER; |
2841 |
SAVETMPS; |
2842 |
PUTBACK; |
2843 |
PUSHSTACK; |
2844 |
PUSHMARK (SP); |
2845 |
|
2846 |
if (ix) |
2847 |
eval_sv (coderef, 0); |
2848 |
else |
2849 |
call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
2850 |
|
2851 |
POPSTACK; |
2852 |
SPAGAIN; |
2853 |
FREETMPS; |
2854 |
LEAVE; |
2855 |
PUTBACK; |
2856 |
} |
2857 |
|
2858 |
if (!(coro->flags & CF_RUNNING)) |
2859 |
{ |
2860 |
save_perl (aTHX_ coro); |
2861 |
load_perl (aTHX_ &temp); |
2862 |
SPAGAIN; |
2863 |
} |
2864 |
} |
2865 |
} |
2866 |
|
2867 |
SV * |
2868 |
is_ready (Coro::State coro) |
2869 |
PROTOTYPE: $ |
2870 |
ALIAS: |
2871 |
is_ready = CF_READY |
2872 |
is_running = CF_RUNNING |
2873 |
is_new = CF_NEW |
2874 |
is_destroyed = CF_DESTROYED |
2875 |
CODE: |
2876 |
RETVAL = boolSV (coro->flags & ix); |
2877 |
OUTPUT: |
2878 |
RETVAL |
2879 |
|
2880 |
void |
2881 |
throw (Coro::State self, SV *throw = &PL_sv_undef) |
2882 |
PROTOTYPE: $;$ |
2883 |
CODE: |
2884 |
{ |
2885 |
struct coro *current = SvSTATE_current; |
2886 |
SV **throwp = self == current ? &CORO_THROW : &self->except; |
2887 |
SvREFCNT_dec (*throwp); |
2888 |
*throwp = SvOK (throw) ? newSVsv (throw) : 0; |
2889 |
} |
2890 |
|
2891 |
void |
2892 |
api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
2893 |
PROTOTYPE: $;$ |
2894 |
C_ARGS: aTHX_ coro, flags |
2895 |
|
2896 |
SV * |
2897 |
has_cctx (Coro::State coro) |
2898 |
PROTOTYPE: $ |
2899 |
CODE: |
2900 |
RETVAL = boolSV (!!coro->cctx); |
2901 |
OUTPUT: |
2902 |
RETVAL |
2903 |
|
2904 |
int |
2905 |
is_traced (Coro::State coro) |
2906 |
PROTOTYPE: $ |
2907 |
CODE: |
2908 |
RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
2909 |
OUTPUT: |
2910 |
RETVAL |
2911 |
|
2912 |
UV |
2913 |
rss (Coro::State coro) |
2914 |
PROTOTYPE: $ |
2915 |
ALIAS: |
2916 |
usecount = 1 |
2917 |
CODE: |
2918 |
switch (ix) |
2919 |
{ |
2920 |
case 0: RETVAL = coro_rss (aTHX_ coro); break; |
2921 |
case 1: RETVAL = coro->usecount; break; |
2922 |
} |
2923 |
OUTPUT: |
2924 |
RETVAL |
2925 |
|
2926 |
void |
2927 |
force_cctx () |
2928 |
PROTOTYPE: |
2929 |
CODE: |
2930 |
SvSTATE_current->cctx->idle_sp = 0; |
2931 |
|
2932 |
void |
2933 |
swap_defsv (Coro::State self) |
2934 |
PROTOTYPE: $ |
2935 |
ALIAS: |
2936 |
swap_defav = 1 |
2937 |
CODE: |
2938 |
if (!self->slot) |
2939 |
croak ("cannot swap state with coroutine that has no saved state,"); |
2940 |
else |
2941 |
{ |
2942 |
SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
2943 |
SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
2944 |
|
2945 |
SV *tmp = *src; *src = *dst; *dst = tmp; |
2946 |
} |
2947 |
|
2948 |
|
2949 |
MODULE = Coro::State PACKAGE = Coro |
2950 |
|
2951 |
BOOT: |
2952 |
{ |
2953 |
int i; |
2954 |
|
2955 |
av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
2956 |
sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
2957 |
sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
2958 |
cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD); |
2959 |
cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD); |
2960 |
coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); |
2961 |
SvREADONLY_on (coro_current); |
2962 |
|
2963 |
sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); |
2964 |
sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); |
2965 |
cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler); |
2966 |
cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new); |
2967 |
|
2968 |
coro_stash = gv_stashpv ("Coro", TRUE); |
2969 |
|
2970 |
newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
2971 |
newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
2972 |
newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
2973 |
newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
2974 |
newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
2975 |
newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
2976 |
|
2977 |
for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
2978 |
coro_ready[i] = newAV (); |
2979 |
|
2980 |
{ |
2981 |
SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
2982 |
|
2983 |
coroapi.schedule = api_schedule; |
2984 |
coroapi.cede = api_cede; |
2985 |
coroapi.cede_notself = api_cede_notself; |
2986 |
coroapi.ready = api_ready; |
2987 |
coroapi.is_ready = api_is_ready; |
2988 |
coroapi.nready = coro_nready; |
2989 |
coroapi.current = coro_current; |
2990 |
|
2991 |
/*GCoroAPI = &coroapi;*/ |
2992 |
sv_setiv (sv, (IV)&coroapi); |
2993 |
SvREADONLY_on (sv); |
2994 |
} |
2995 |
} |
2996 |
|
2997 |
void |
2998 |
schedule (...) |
2999 |
CODE: |
3000 |
CORO_EXECUTE_SLF_XS (slf_init_schedule); |
3001 |
|
3002 |
void |
3003 |
cede (...) |
3004 |
CODE: |
3005 |
CORO_EXECUTE_SLF_XS (slf_init_cede); |
3006 |
|
3007 |
void |
3008 |
cede_notself (...) |
3009 |
CODE: |
3010 |
CORO_EXECUTE_SLF_XS (slf_init_cede_notself); |
3011 |
|
3012 |
void |
3013 |
_set_current (SV *current) |
3014 |
PROTOTYPE: $ |
3015 |
CODE: |
3016 |
SvREFCNT_dec (SvRV (coro_current)); |
3017 |
SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
3018 |
|
3019 |
void |
3020 |
_set_readyhook (SV *hook) |
3021 |
PROTOTYPE: $ |
3022 |
CODE: |
3023 |
SvREFCNT_dec (coro_readyhook); |
3024 |
coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; |
3025 |
|
3026 |
int |
3027 |
prio (Coro::State coro, int newprio = 0) |
3028 |
PROTOTYPE: $;$ |
3029 |
ALIAS: |
3030 |
nice = 1 |
3031 |
CODE: |
3032 |
{ |
3033 |
RETVAL = coro->prio; |
3034 |
|
3035 |
if (items > 1) |
3036 |
{ |
3037 |
if (ix) |
3038 |
newprio = coro->prio - newprio; |
3039 |
|
3040 |
if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
3041 |
if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
3042 |
|
3043 |
coro->prio = newprio; |
3044 |
} |
3045 |
} |
3046 |
OUTPUT: |
3047 |
RETVAL |
3048 |
|
3049 |
SV * |
3050 |
ready (SV *self) |
3051 |
PROTOTYPE: $ |
3052 |
CODE: |
3053 |
RETVAL = boolSV (api_ready (aTHX_ self)); |
3054 |
OUTPUT: |
3055 |
RETVAL |
3056 |
|
3057 |
int |
3058 |
nready (...) |
3059 |
PROTOTYPE: |
3060 |
CODE: |
3061 |
RETVAL = coro_nready; |
3062 |
OUTPUT: |
3063 |
RETVAL |
3064 |
|
3065 |
void |
3066 |
_pool_handler (...) |
3067 |
CODE: |
3068 |
CORO_EXECUTE_SLF_XS (slf_init_pool_handler); |
3069 |
|
3070 |
void |
3071 |
async_pool (SV *cv, ...) |
3072 |
PROTOTYPE: &@ |
3073 |
PPCODE: |
3074 |
{ |
3075 |
HV *hv = (HV *)av_pop (av_async_pool); |
3076 |
AV *av = newAV (); |
3077 |
SV *cb = ST (0); |
3078 |
int i; |
3079 |
|
3080 |
av_extend (av, items - 2); |
3081 |
for (i = 1; i < items; ++i) |
3082 |
av_push (av, SvREFCNT_inc_NN (ST (i))); |
3083 |
|
3084 |
if ((SV *)hv == &PL_sv_undef) |
3085 |
{ |
3086 |
PUSHMARK (SP); |
3087 |
EXTEND (SP, 2); |
3088 |
PUSHs (sv_Coro); |
3089 |
PUSHs ((SV *)cv_pool_handler); |
3090 |
PUTBACK; |
3091 |
call_sv ((SV *)cv_coro_new, G_SCALAR); |
3092 |
SPAGAIN; |
3093 |
|
3094 |
hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs)); |
3095 |
} |
3096 |
|
3097 |
{ |
3098 |
struct coro *coro = SvSTATE_hv (hv); |
3099 |
|
3100 |
assert (!coro->invoke_cb); |
3101 |
assert (!coro->invoke_av); |
3102 |
coro->invoke_cb = SvREFCNT_inc (cb); |
3103 |
coro->invoke_av = av; |
3104 |
} |
3105 |
|
3106 |
api_ready (aTHX_ (SV *)hv); |
3107 |
|
3108 |
if (GIMME_V != G_VOID) |
3109 |
XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); |
3110 |
else |
3111 |
SvREFCNT_dec (hv); |
3112 |
} |
3113 |
|
3114 |
SV * |
3115 |
rouse_cb () |
3116 |
PROTOTYPE: |
3117 |
CODE: |
3118 |
RETVAL = coro_new_rouse_cb (aTHX); |
3119 |
OUTPUT: |
3120 |
RETVAL |
3121 |
|
3122 |
void |
3123 |
rouse_wait (...) |
3124 |
PROTOTYPE: ;$ |
3125 |
PPCODE: |
3126 |
CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); |
3127 |
|
3128 |
|
3129 |
MODULE = Coro::State PACKAGE = PerlIO::cede |
3130 |
|
3131 |
BOOT: |
3132 |
PerlIO_define_layer (aTHX_ &PerlIO_cede); |
3133 |
|
3134 |
|
3135 |
MODULE = Coro::State PACKAGE = Coro::Semaphore |
3136 |
|
3137 |
SV * |
3138 |
new (SV *klass, SV *count = 0) |
3139 |
CODE: |
3140 |
RETVAL = sv_bless ( |
3141 |
coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), |
3142 |
GvSTASH (CvGV (cv)) |
3143 |
); |
3144 |
OUTPUT: |
3145 |
RETVAL |
3146 |
|
3147 |
# helper for Coro::Channel |
3148 |
SV * |
3149 |
_alloc (int count) |
3150 |
CODE: |
3151 |
RETVAL = coro_waitarray_new (aTHX_ count); |
3152 |
OUTPUT: |
3153 |
RETVAL |
3154 |
|
3155 |
SV * |
3156 |
count (SV *self) |
3157 |
CODE: |
3158 |
RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); |
3159 |
OUTPUT: |
3160 |
RETVAL |
3161 |
|
3162 |
void |
3163 |
up (SV *self, int adjust = 1) |
3164 |
ALIAS: |
3165 |
adjust = 1 |
3166 |
CODE: |
3167 |
coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); |
3168 |
|
3169 |
void |
3170 |
down (...) |
3171 |
CODE: |
3172 |
CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); |
3173 |
|
3174 |
void |
3175 |
wait (...) |
3176 |
CODE: |
3177 |
CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); |
3178 |
|
3179 |
void |
3180 |
try (SV *self) |
3181 |
PPCODE: |
3182 |
{ |
3183 |
AV *av = (AV *)SvRV (self); |
3184 |
SV *count_sv = AvARRAY (av)[0]; |
3185 |
IV count = SvIVX (count_sv); |
3186 |
|
3187 |
if (count > 0) |
3188 |
{ |
3189 |
--count; |
3190 |
SvIVX (count_sv) = count; |
3191 |
XSRETURN_YES; |
3192 |
} |
3193 |
else |
3194 |
XSRETURN_NO; |
3195 |
} |
3196 |
|
3197 |
void |
3198 |
waiters (SV *self) |
3199 |
PPCODE: |
3200 |
{ |
3201 |
AV *av = (AV *)SvRV (self); |
3202 |
int wcount = AvFILLp (av) + 1 - 1; |
3203 |
|
3204 |
if (GIMME_V == G_SCALAR) |
3205 |
XPUSHs (sv_2mortal (newSViv (wcount))); |
3206 |
else |
3207 |
{ |
3208 |
int i; |
3209 |
EXTEND (SP, wcount); |
3210 |
for (i = 1; i <= wcount; ++i) |
3211 |
PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); |
3212 |
} |
3213 |
} |
3214 |
|
3215 |
MODULE = Coro::State PACKAGE = Coro::Signal |
3216 |
|
3217 |
SV * |
3218 |
new (SV *klass) |
3219 |
CODE: |
3220 |
RETVAL = sv_bless ( |
3221 |
coro_waitarray_new (aTHX_ 0), |
3222 |
GvSTASH (CvGV (cv)) |
3223 |
); |
3224 |
OUTPUT: |
3225 |
RETVAL |
3226 |
|
3227 |
void |
3228 |
wait (...) |
3229 |
CODE: |
3230 |
CORO_EXECUTE_SLF_XS (slf_init_signal_wait); |
3231 |
|
3232 |
void |
3233 |
broadcast (SV *self) |
3234 |
CODE: |
3235 |
{ |
3236 |
AV *av = (AV *)SvRV (self); |
3237 |
coro_signal_wake (aTHX_ av, AvFILLp (av)); |
3238 |
} |
3239 |
|
3240 |
void |
3241 |
send (SV *self) |
3242 |
CODE: |
3243 |
{ |
3244 |
AV *av = (AV *)SvRV (self); |
3245 |
|
3246 |
if (AvFILLp (av)) |
3247 |
coro_signal_wake (aTHX_ av, 1); |
3248 |
else |
3249 |
SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ |
3250 |
} |
3251 |
|
3252 |
IV |
3253 |
awaited (SV *self) |
3254 |
CODE: |
3255 |
RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; |
3256 |
OUTPUT: |
3257 |
RETVAL |
3258 |
|
3259 |
|
3260 |
MODULE = Coro::State PACKAGE = Coro::AnyEvent |
3261 |
|
3262 |
BOOT: |
3263 |
sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
3264 |
|
3265 |
void |
3266 |
_schedule (...) |
3267 |
CODE: |
3268 |
{ |
3269 |
static int incede; |
3270 |
|
3271 |
api_cede_notself (aTHX); |
3272 |
|
3273 |
++incede; |
3274 |
while (coro_nready >= incede && api_cede (aTHX)) |
3275 |
; |
3276 |
|
3277 |
sv_setsv (sv_activity, &PL_sv_undef); |
3278 |
if (coro_nready >= incede) |
3279 |
{ |
3280 |
PUSHMARK (SP); |
3281 |
PUTBACK; |
3282 |
call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
3283 |
} |
3284 |
|
3285 |
--incede; |
3286 |
} |
3287 |
|
3288 |
|
3289 |
MODULE = Coro::State PACKAGE = Coro::AIO |
3290 |
|
3291 |
void |
3292 |
_register (char *target, char *proto, SV *req) |
3293 |
CODE: |
3294 |
{ |
3295 |
CV *req_cv = coro_sv_2cv (aTHX_ req); |
3296 |
/* newXSproto doesn't return the CV on 5.8 */ |
3297 |
CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); |
3298 |
sv_setpv ((SV *)slf_cv, proto); |
3299 |
sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); |
3300 |
} |
3301 |
|