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 |
#ifndef CvISXSUB |
104 |
# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE) |
105 |
#endif |
106 |
|
107 |
/* 5.8.7 */ |
108 |
#ifndef SvRV_set |
109 |
# define SvRV_set(s,v) SvRV(s) = (v) |
110 |
#endif |
111 |
|
112 |
#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
113 |
# undef CORO_STACKGUARD |
114 |
#endif |
115 |
|
116 |
#ifndef CORO_STACKGUARD |
117 |
# define CORO_STACKGUARD 0 |
118 |
#endif |
119 |
|
120 |
/* prefer perl internal functions over our own? */ |
121 |
#ifndef CORO_PREFER_PERL_FUNCTIONS |
122 |
# define CORO_PREFER_PERL_FUNCTIONS 0 |
123 |
#endif |
124 |
|
125 |
/* The next macros try to return the current stack pointer, in an as |
126 |
* portable way as possible. */ |
127 |
#if __GNUC__ >= 4 |
128 |
# define dSTACKLEVEL int stacklevel_dummy |
129 |
# define STACKLEVEL __builtin_frame_address (0) |
130 |
#else |
131 |
# define dSTACKLEVEL volatile void *stacklevel |
132 |
# define STACKLEVEL ((void *)&stacklevel) |
133 |
#endif |
134 |
|
135 |
#define IN_DESTRUCT (PL_main_cv == Nullcv) |
136 |
|
137 |
#if __GNUC__ >= 3 |
138 |
# define attribute(x) __attribute__(x) |
139 |
# define expect(expr,value) __builtin_expect ((expr),(value)) |
140 |
# define INLINE static inline |
141 |
#else |
142 |
# define attribute(x) |
143 |
# define expect(expr,value) (expr) |
144 |
# define INLINE static |
145 |
#endif |
146 |
|
147 |
#define expect_false(expr) expect ((expr) != 0, 0) |
148 |
#define expect_true(expr) expect ((expr) != 0, 1) |
149 |
|
150 |
#define NOINLINE attribute ((noinline)) |
151 |
|
152 |
#include "CoroAPI.h" |
153 |
#define GCoroAPI (&coroapi) /* very sneaky */ |
154 |
|
155 |
#ifdef USE_ITHREADS |
156 |
# if CORO_PTHREAD |
157 |
static void *coro_thx; |
158 |
# endif |
159 |
#endif |
160 |
|
161 |
static double (*nvtime)(); /* so why doesn't it take void? */ |
162 |
|
163 |
/* we hijack an hopefully unused CV flag for our purposes */ |
164 |
#define CVf_SLF 0x4000 |
165 |
static OP *pp_slf (pTHX); |
166 |
|
167 |
static U32 cctx_gen; |
168 |
static size_t cctx_stacksize = CORO_STACKSIZE; |
169 |
static struct CoroAPI coroapi; |
170 |
static AV *main_mainstack; /* used to differentiate between $main and others */ |
171 |
static JMPENV *main_top_env; |
172 |
static HV *coro_state_stash, *coro_stash; |
173 |
static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
174 |
|
175 |
static GV *irsgv; /* $/ */ |
176 |
static GV *stdoutgv; /* *STDOUT */ |
177 |
static SV *rv_diehook; |
178 |
static SV *rv_warnhook; |
179 |
static HV *hv_sig; /* %SIG */ |
180 |
|
181 |
/* async_pool helper stuff */ |
182 |
static SV *sv_pool_rss; |
183 |
static SV *sv_pool_size; |
184 |
static SV *sv_async_pool_idle; |
185 |
static AV *av_async_pool; |
186 |
static SV *sv_Coro; |
187 |
static CV *cv_pool_handler; |
188 |
static CV *cv_coro_state_new; |
189 |
|
190 |
/* Coro::AnyEvent */ |
191 |
static SV *sv_activity; |
192 |
|
193 |
static struct coro_cctx *cctx_first; |
194 |
static int cctx_count, cctx_idle; |
195 |
|
196 |
enum { |
197 |
CC_MAPPED = 0x01, |
198 |
CC_NOREUSE = 0x02, /* throw this away after tracing */ |
199 |
CC_TRACE = 0x04, |
200 |
CC_TRACE_SUB = 0x08, /* trace sub calls */ |
201 |
CC_TRACE_LINE = 0x10, /* trace each statement */ |
202 |
CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
203 |
}; |
204 |
|
205 |
/* this is a structure representing a c-level coroutine */ |
206 |
typedef struct coro_cctx |
207 |
{ |
208 |
struct coro_cctx *next; |
209 |
|
210 |
/* the stack */ |
211 |
void *sptr; |
212 |
size_t ssize; |
213 |
|
214 |
/* cpu state */ |
215 |
void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
216 |
JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
217 |
JMPENV *top_env; |
218 |
coro_context cctx; |
219 |
|
220 |
U32 gen; |
221 |
#if CORO_USE_VALGRIND |
222 |
int valgrind_id; |
223 |
#endif |
224 |
unsigned char flags; |
225 |
} coro_cctx; |
226 |
|
227 |
enum { |
228 |
CF_RUNNING = 0x0001, /* coroutine is running */ |
229 |
CF_READY = 0x0002, /* coroutine is ready */ |
230 |
CF_NEW = 0x0004, /* has never been switched to */ |
231 |
CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
232 |
}; |
233 |
|
234 |
/* the structure where most of the perl state is stored, overlaid on the cxstack */ |
235 |
typedef struct |
236 |
{ |
237 |
SV *defsv; |
238 |
AV *defav; |
239 |
SV *errsv; |
240 |
SV *irsgv; |
241 |
#define VAR(name,type) type name; |
242 |
# include "state.h" |
243 |
#undef VAR |
244 |
} perl_slots; |
245 |
|
246 |
#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
247 |
|
248 |
/* this is a structure representing a perl-level coroutine */ |
249 |
struct coro { |
250 |
/* the C coroutine allocated to this perl coroutine, if any */ |
251 |
coro_cctx *cctx; |
252 |
|
253 |
/* state data */ |
254 |
struct CoroSLF slf_frame; /* saved slf frame */ |
255 |
AV *mainstack; |
256 |
perl_slots *slot; /* basically the saved sp */ |
257 |
|
258 |
CV *startcv; /* the CV to execute */ |
259 |
AV *args; /* data associated with this coroutine (initial args) */ |
260 |
int refcnt; /* coroutines are refcounted, yes */ |
261 |
int flags; /* CF_ flags */ |
262 |
HV *hv; /* the perl hash associated with this coro, if any */ |
263 |
void (*on_destroy)(pTHX_ struct coro *coro); |
264 |
|
265 |
/* statistics */ |
266 |
int usecount; /* number of transfers to this coro */ |
267 |
|
268 |
/* coro process data */ |
269 |
int prio; |
270 |
SV *except; /* exception to be thrown */ |
271 |
SV *rouse_cb; |
272 |
|
273 |
/* async_pool */ |
274 |
SV *saved_deffh; |
275 |
SV *invoke_cb; |
276 |
AV *invoke_av; |
277 |
|
278 |
/* linked list */ |
279 |
struct coro *next, *prev; |
280 |
}; |
281 |
|
282 |
typedef struct coro *Coro__State; |
283 |
typedef struct coro *Coro__State_or_hashref; |
284 |
|
285 |
/* the following variables are effectively part of the perl context */ |
286 |
/* and get copied between struct coro and these variables */ |
287 |
/* the mainr easonw e don't support windows process emulation */ |
288 |
static struct CoroSLF slf_frame; /* the current slf frame */ |
289 |
|
290 |
/** Coro ********************************************************************/ |
291 |
|
292 |
#define PRIO_MAX 3 |
293 |
#define PRIO_HIGH 1 |
294 |
#define PRIO_NORMAL 0 |
295 |
#define PRIO_LOW -1 |
296 |
#define PRIO_IDLE -3 |
297 |
#define PRIO_MIN -4 |
298 |
|
299 |
/* for Coro.pm */ |
300 |
static SV *coro_current; |
301 |
static SV *coro_readyhook; |
302 |
static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; |
303 |
static CV *cv_coro_run, *cv_coro_terminate; |
304 |
static struct coro *coro_first; |
305 |
#define coro_nready coroapi.nready |
306 |
|
307 |
/** lowlevel stuff **********************************************************/ |
308 |
|
309 |
static SV * |
310 |
coro_get_sv (pTHX_ const char *name, int create) |
311 |
{ |
312 |
#if PERL_VERSION_ATLEAST (5,10,0) |
313 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
314 |
get_sv (name, create); |
315 |
#endif |
316 |
return get_sv (name, create); |
317 |
} |
318 |
|
319 |
static AV * |
320 |
coro_get_av (pTHX_ const char *name, int create) |
321 |
{ |
322 |
#if PERL_VERSION_ATLEAST (5,10,0) |
323 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
324 |
get_av (name, create); |
325 |
#endif |
326 |
return get_av (name, create); |
327 |
} |
328 |
|
329 |
static HV * |
330 |
coro_get_hv (pTHX_ const char *name, int create) |
331 |
{ |
332 |
#if PERL_VERSION_ATLEAST (5,10,0) |
333 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
334 |
get_hv (name, create); |
335 |
#endif |
336 |
return get_hv (name, create); |
337 |
} |
338 |
|
339 |
/* may croak */ |
340 |
INLINE CV * |
341 |
coro_sv_2cv (pTHX_ SV *sv) |
342 |
{ |
343 |
HV *st; |
344 |
GV *gvp; |
345 |
return sv_2cv (sv, &st, &gvp, 0); |
346 |
} |
347 |
|
348 |
static AV * |
349 |
coro_clone_padlist (pTHX_ CV *cv) |
350 |
{ |
351 |
AV *padlist = CvPADLIST (cv); |
352 |
AV *newpadlist, *newpad; |
353 |
|
354 |
newpadlist = newAV (); |
355 |
AvREAL_off (newpadlist); |
356 |
#if PERL_VERSION_ATLEAST (5,10,0) |
357 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
358 |
#else |
359 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
360 |
#endif |
361 |
newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
362 |
--AvFILLp (padlist); |
363 |
|
364 |
av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); |
365 |
av_store (newpadlist, 1, (SV *)newpad); |
366 |
|
367 |
return newpadlist; |
368 |
} |
369 |
|
370 |
static void |
371 |
free_padlist (pTHX_ AV *padlist) |
372 |
{ |
373 |
/* may be during global destruction */ |
374 |
if (SvREFCNT (padlist)) |
375 |
{ |
376 |
I32 i = AvFILLp (padlist); |
377 |
while (i >= 0) |
378 |
{ |
379 |
SV **svp = av_fetch (padlist, i--, FALSE); |
380 |
if (svp) |
381 |
{ |
382 |
SV *sv; |
383 |
while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
384 |
SvREFCNT_dec (sv); |
385 |
|
386 |
SvREFCNT_dec (*svp); |
387 |
} |
388 |
} |
389 |
|
390 |
SvREFCNT_dec ((SV*)padlist); |
391 |
} |
392 |
} |
393 |
|
394 |
static int |
395 |
coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
396 |
{ |
397 |
AV *padlist; |
398 |
AV *av = (AV *)mg->mg_obj; |
399 |
|
400 |
/* casting is fun. */ |
401 |
while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
402 |
free_padlist (aTHX_ padlist); |
403 |
|
404 |
SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
405 |
|
406 |
return 0; |
407 |
} |
408 |
|
409 |
#define CORO_MAGIC_type_cv 26 |
410 |
#define CORO_MAGIC_type_state PERL_MAGIC_ext |
411 |
|
412 |
static MGVTBL coro_cv_vtbl = { |
413 |
0, 0, 0, 0, |
414 |
coro_cv_free |
415 |
}; |
416 |
|
417 |
#define CORO_MAGIC_NN(sv, type) \ |
418 |
(expect_true (SvMAGIC (sv)->mg_type == type) \ |
419 |
? SvMAGIC (sv) \ |
420 |
: mg_find (sv, type)) |
421 |
|
422 |
#define CORO_MAGIC(sv, type) \ |
423 |
(expect_true (SvMAGIC (sv)) \ |
424 |
? CORO_MAGIC_NN (sv, type) \ |
425 |
: 0) |
426 |
|
427 |
#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
428 |
#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) |
429 |
|
430 |
INLINE struct coro * |
431 |
SvSTATE_ (pTHX_ SV *coro) |
432 |
{ |
433 |
HV *stash; |
434 |
MAGIC *mg; |
435 |
|
436 |
if (SvROK (coro)) |
437 |
coro = SvRV (coro); |
438 |
|
439 |
if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
440 |
croak ("Coro::State object required"); |
441 |
|
442 |
stash = SvSTASH (coro); |
443 |
if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
444 |
{ |
445 |
/* very slow, but rare, check */ |
446 |
if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
447 |
croak ("Coro::State object required"); |
448 |
} |
449 |
|
450 |
mg = CORO_MAGIC_state (coro); |
451 |
return (struct coro *)mg->mg_ptr; |
452 |
} |
453 |
|
454 |
#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
455 |
|
456 |
/* faster than SvSTATE, but expects a coroutine hv */ |
457 |
#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr) |
458 |
#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
459 |
|
460 |
/* the next two functions merely cache the padlists */ |
461 |
static void |
462 |
get_padlist (pTHX_ CV *cv) |
463 |
{ |
464 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
465 |
AV *av; |
466 |
|
467 |
if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
468 |
CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
469 |
else |
470 |
{ |
471 |
#if CORO_PREFER_PERL_FUNCTIONS |
472 |
/* this is probably cleaner? but also slower! */ |
473 |
/* in practise, it seems to be less stable */ |
474 |
CV *cp = Perl_cv_clone (aTHX_ cv); |
475 |
CvPADLIST (cv) = CvPADLIST (cp); |
476 |
CvPADLIST (cp) = 0; |
477 |
SvREFCNT_dec (cp); |
478 |
#else |
479 |
CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
480 |
#endif |
481 |
} |
482 |
} |
483 |
|
484 |
static void |
485 |
put_padlist (pTHX_ CV *cv) |
486 |
{ |
487 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
488 |
AV *av; |
489 |
|
490 |
if (expect_false (!mg)) |
491 |
mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
492 |
|
493 |
av = (AV *)mg->mg_obj; |
494 |
|
495 |
if (expect_false (AvFILLp (av) >= AvMAX (av))) |
496 |
av_extend (av, AvMAX (av) + 1); |
497 |
|
498 |
AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
499 |
} |
500 |
|
501 |
/** load & save, init *******************************************************/ |
502 |
|
503 |
static void |
504 |
load_perl (pTHX_ Coro__State c) |
505 |
{ |
506 |
perl_slots *slot = c->slot; |
507 |
c->slot = 0; |
508 |
|
509 |
PL_mainstack = c->mainstack; |
510 |
|
511 |
GvSV (PL_defgv) = slot->defsv; |
512 |
GvAV (PL_defgv) = slot->defav; |
513 |
GvSV (PL_errgv) = slot->errsv; |
514 |
GvSV (irsgv) = slot->irsgv; |
515 |
|
516 |
#define VAR(name,type) PL_ ## name = slot->name; |
517 |
# include "state.h" |
518 |
#undef VAR |
519 |
|
520 |
{ |
521 |
dSP; |
522 |
|
523 |
CV *cv; |
524 |
|
525 |
/* now do the ugly restore mess */ |
526 |
while (expect_true (cv = (CV *)POPs)) |
527 |
{ |
528 |
put_padlist (aTHX_ cv); /* mark this padlist as available */ |
529 |
CvDEPTH (cv) = PTR2IV (POPs); |
530 |
CvPADLIST (cv) = (AV *)POPs; |
531 |
} |
532 |
|
533 |
PUTBACK; |
534 |
} |
535 |
|
536 |
slf_frame = c->slf_frame; |
537 |
CORO_THROW = c->except; |
538 |
} |
539 |
|
540 |
static void |
541 |
save_perl (pTHX_ Coro__State c) |
542 |
{ |
543 |
c->except = CORO_THROW; |
544 |
c->slf_frame = slf_frame; |
545 |
|
546 |
{ |
547 |
dSP; |
548 |
I32 cxix = cxstack_ix; |
549 |
PERL_CONTEXT *ccstk = cxstack; |
550 |
PERL_SI *top_si = PL_curstackinfo; |
551 |
|
552 |
/* |
553 |
* the worst thing you can imagine happens first - we have to save |
554 |
* (and reinitialize) all cv's in the whole callchain :( |
555 |
*/ |
556 |
|
557 |
XPUSHs (Nullsv); |
558 |
/* this loop was inspired by pp_caller */ |
559 |
for (;;) |
560 |
{ |
561 |
while (expect_true (cxix >= 0)) |
562 |
{ |
563 |
PERL_CONTEXT *cx = &ccstk[cxix--]; |
564 |
|
565 |
if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) |
566 |
{ |
567 |
CV *cv = cx->blk_sub.cv; |
568 |
|
569 |
if (expect_true (CvDEPTH (cv))) |
570 |
{ |
571 |
EXTEND (SP, 3); |
572 |
PUSHs ((SV *)CvPADLIST (cv)); |
573 |
PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
574 |
PUSHs ((SV *)cv); |
575 |
|
576 |
CvDEPTH (cv) = 0; |
577 |
get_padlist (aTHX_ cv); |
578 |
} |
579 |
} |
580 |
} |
581 |
|
582 |
if (expect_true (top_si->si_type == PERLSI_MAIN)) |
583 |
break; |
584 |
|
585 |
top_si = top_si->si_prev; |
586 |
ccstk = top_si->si_cxstack; |
587 |
cxix = top_si->si_cxix; |
588 |
} |
589 |
|
590 |
PUTBACK; |
591 |
} |
592 |
|
593 |
/* allocate some space on the context stack for our purposes */ |
594 |
/* we manually unroll here, as usually 2 slots is enough */ |
595 |
if (SLOT_COUNT >= 1) CXINC; |
596 |
if (SLOT_COUNT >= 2) CXINC; |
597 |
if (SLOT_COUNT >= 3) CXINC; |
598 |
{ |
599 |
int i; |
600 |
for (i = 3; i < SLOT_COUNT; ++i) |
601 |
CXINC; |
602 |
} |
603 |
cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
604 |
|
605 |
c->mainstack = PL_mainstack; |
606 |
|
607 |
{ |
608 |
perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
609 |
|
610 |
slot->defav = GvAV (PL_defgv); |
611 |
slot->defsv = DEFSV; |
612 |
slot->errsv = ERRSV; |
613 |
slot->irsgv = GvSV (irsgv); |
614 |
|
615 |
#define VAR(name,type) slot->name = PL_ ## name; |
616 |
# include "state.h" |
617 |
#undef VAR |
618 |
} |
619 |
} |
620 |
|
621 |
/* |
622 |
* allocate various perl stacks. This is almost an exact copy |
623 |
* of perl.c:init_stacks, except that it uses less memory |
624 |
* on the (sometimes correct) assumption that coroutines do |
625 |
* not usually need a lot of stackspace. |
626 |
*/ |
627 |
#if CORO_PREFER_PERL_FUNCTIONS |
628 |
# define coro_init_stacks(thx) init_stacks () |
629 |
#else |
630 |
static void |
631 |
coro_init_stacks (pTHX) |
632 |
{ |
633 |
PL_curstackinfo = new_stackinfo(32, 8); |
634 |
PL_curstackinfo->si_type = PERLSI_MAIN; |
635 |
PL_curstack = PL_curstackinfo->si_stack; |
636 |
PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
637 |
|
638 |
PL_stack_base = AvARRAY(PL_curstack); |
639 |
PL_stack_sp = PL_stack_base; |
640 |
PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
641 |
|
642 |
New(50,PL_tmps_stack,32,SV*); |
643 |
PL_tmps_floor = -1; |
644 |
PL_tmps_ix = -1; |
645 |
PL_tmps_max = 32; |
646 |
|
647 |
New(54,PL_markstack,16,I32); |
648 |
PL_markstack_ptr = PL_markstack; |
649 |
PL_markstack_max = PL_markstack + 16; |
650 |
|
651 |
#ifdef SET_MARK_OFFSET |
652 |
SET_MARK_OFFSET; |
653 |
#endif |
654 |
|
655 |
New(54,PL_scopestack,8,I32); |
656 |
PL_scopestack_ix = 0; |
657 |
PL_scopestack_max = 8; |
658 |
|
659 |
New(54,PL_savestack,24,ANY); |
660 |
PL_savestack_ix = 0; |
661 |
PL_savestack_max = 24; |
662 |
|
663 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
664 |
New(54,PL_retstack,4,OP*); |
665 |
PL_retstack_ix = 0; |
666 |
PL_retstack_max = 4; |
667 |
#endif |
668 |
} |
669 |
#endif |
670 |
|
671 |
/* |
672 |
* destroy the stacks, the callchain etc... |
673 |
*/ |
674 |
static void |
675 |
coro_destruct_stacks (pTHX) |
676 |
{ |
677 |
while (PL_curstackinfo->si_next) |
678 |
PL_curstackinfo = PL_curstackinfo->si_next; |
679 |
|
680 |
while (PL_curstackinfo) |
681 |
{ |
682 |
PERL_SI *p = PL_curstackinfo->si_prev; |
683 |
|
684 |
if (!IN_DESTRUCT) |
685 |
SvREFCNT_dec (PL_curstackinfo->si_stack); |
686 |
|
687 |
Safefree (PL_curstackinfo->si_cxstack); |
688 |
Safefree (PL_curstackinfo); |
689 |
PL_curstackinfo = p; |
690 |
} |
691 |
|
692 |
Safefree (PL_tmps_stack); |
693 |
Safefree (PL_markstack); |
694 |
Safefree (PL_scopestack); |
695 |
Safefree (PL_savestack); |
696 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
697 |
Safefree (PL_retstack); |
698 |
#endif |
699 |
} |
700 |
|
701 |
#define CORO_RSS \ |
702 |
rss += sizeof (SYM (curstackinfo)); \ |
703 |
rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \ |
704 |
rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \ |
705 |
rss += SYM (tmps_max) * sizeof (SV *); \ |
706 |
rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \ |
707 |
rss += SYM (scopestack_max) * sizeof (I32); \ |
708 |
rss += SYM (savestack_max) * sizeof (ANY); |
709 |
|
710 |
static size_t |
711 |
coro_rss (pTHX_ struct coro *coro) |
712 |
{ |
713 |
size_t rss = sizeof (*coro); |
714 |
|
715 |
if (coro->mainstack) |
716 |
{ |
717 |
if (coro->flags & CF_RUNNING) |
718 |
{ |
719 |
#define SYM(sym) PL_ ## sym |
720 |
CORO_RSS; |
721 |
#undef SYM |
722 |
} |
723 |
else |
724 |
{ |
725 |
#define SYM(sym) coro->slot->sym |
726 |
CORO_RSS; |
727 |
#undef SYM |
728 |
} |
729 |
} |
730 |
|
731 |
return rss; |
732 |
} |
733 |
|
734 |
/** coroutine stack handling ************************************************/ |
735 |
|
736 |
static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
737 |
static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
738 |
static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
739 |
|
740 |
/* apparently < 5.8.8 */ |
741 |
#ifndef MgPV_nolen_const |
742 |
#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
743 |
SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
744 |
(const char*)(mg)->mg_ptr) |
745 |
#endif |
746 |
|
747 |
/* |
748 |
* This overrides the default magic get method of %SIG elements. |
749 |
* The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
750 |
* and instead of tryign to save and restore the hash elements, we just provide |
751 |
* readback here. |
752 |
* We only do this when the hook is != 0, as they are often set to 0 temporarily, |
753 |
* not expecting this to actually change the hook. This is a potential problem |
754 |
* when a schedule happens then, but we ignore this. |
755 |
*/ |
756 |
static int |
757 |
coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
758 |
{ |
759 |
const char *s = MgPV_nolen_const (mg); |
760 |
|
761 |
if (*s == '_') |
762 |
{ |
763 |
SV **svp = 0; |
764 |
|
765 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
766 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
767 |
|
768 |
if (svp) |
769 |
{ |
770 |
sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
771 |
return 0; |
772 |
} |
773 |
} |
774 |
|
775 |
return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
776 |
} |
777 |
|
778 |
static int |
779 |
coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
780 |
{ |
781 |
const char *s = MgPV_nolen_const (mg); |
782 |
|
783 |
if (*s == '_') |
784 |
{ |
785 |
SV **svp = 0; |
786 |
|
787 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
788 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
789 |
|
790 |
if (svp) |
791 |
{ |
792 |
SV *old = *svp; |
793 |
*svp = 0; |
794 |
SvREFCNT_dec (old); |
795 |
return 0; |
796 |
} |
797 |
} |
798 |
|
799 |
return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
800 |
} |
801 |
|
802 |
static int |
803 |
coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
804 |
{ |
805 |
const char *s = MgPV_nolen_const (mg); |
806 |
|
807 |
if (*s == '_') |
808 |
{ |
809 |
SV **svp = 0; |
810 |
|
811 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
812 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
813 |
|
814 |
if (svp) |
815 |
{ |
816 |
SV *old = *svp; |
817 |
*svp = newSVsv (sv); |
818 |
SvREFCNT_dec (old); |
819 |
return 0; |
820 |
} |
821 |
} |
822 |
|
823 |
return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
824 |
} |
825 |
|
826 |
static void |
827 |
prepare_nop (pTHX_ struct coro_transfer_args *ta) |
828 |
{ |
829 |
/* kind of mega-hacky, but works */ |
830 |
ta->next = ta->prev = (struct coro *)ta; |
831 |
} |
832 |
|
833 |
static int |
834 |
slf_check_nop (pTHX_ struct CoroSLF *frame) |
835 |
{ |
836 |
return 0; |
837 |
} |
838 |
|
839 |
static UNOP coro_setup_op; |
840 |
|
841 |
static void NOINLINE /* noinline to keep it out of the transfer fast path */ |
842 |
coro_setup (pTHX_ struct coro *coro) |
843 |
{ |
844 |
/* |
845 |
* emulate part of the perl startup here. |
846 |
*/ |
847 |
coro_init_stacks (aTHX); |
848 |
|
849 |
PL_runops = RUNOPS_DEFAULT; |
850 |
PL_curcop = &PL_compiling; |
851 |
PL_in_eval = EVAL_NULL; |
852 |
PL_comppad = 0; |
853 |
PL_curpm = 0; |
854 |
PL_curpad = 0; |
855 |
PL_localizing = 0; |
856 |
PL_dirty = 0; |
857 |
PL_restartop = 0; |
858 |
#if PERL_VERSION_ATLEAST (5,10,0) |
859 |
PL_parser = 0; |
860 |
#endif |
861 |
|
862 |
/* recreate the die/warn hooks */ |
863 |
PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
864 |
PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
865 |
|
866 |
GvSV (PL_defgv) = newSV (0); |
867 |
GvAV (PL_defgv) = coro->args; coro->args = 0; |
868 |
GvSV (PL_errgv) = newSV (0); |
869 |
GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
870 |
PL_rs = newSVsv (GvSV (irsgv)); |
871 |
PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
872 |
|
873 |
{ |
874 |
dSP; |
875 |
UNOP myop; |
876 |
|
877 |
Zero (&myop, 1, UNOP); |
878 |
myop.op_next = Nullop; |
879 |
myop.op_type = OP_ENTERSUB; |
880 |
myop.op_flags = OPf_WANT_VOID; |
881 |
|
882 |
PUSHMARK (SP); |
883 |
PUSHs ((SV *)coro->startcv); |
884 |
PUTBACK; |
885 |
PL_op = (OP *)&myop; |
886 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
887 |
} |
888 |
|
889 |
/* this newly created coroutine might be run on an existing cctx which most |
890 |
* likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
891 |
*/ |
892 |
slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
893 |
slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
894 |
|
895 |
/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ |
896 |
coro_setup_op.op_next = PL_op; |
897 |
coro_setup_op.op_type = OP_CUSTOM; |
898 |
coro_setup_op.op_ppaddr = pp_slf; |
899 |
/* no flags etc. required, as an init function won't be called */ |
900 |
|
901 |
PL_op = (OP *)&coro_setup_op; |
902 |
|
903 |
/* copy throw, in case it was set before coro_setup */ |
904 |
CORO_THROW = coro->except; |
905 |
} |
906 |
|
907 |
static void |
908 |
coro_destruct (pTHX_ struct coro *coro) |
909 |
{ |
910 |
if (!IN_DESTRUCT) |
911 |
{ |
912 |
/* restore all saved variables and stuff */ |
913 |
LEAVE_SCOPE (0); |
914 |
assert (PL_tmps_floor == -1); |
915 |
|
916 |
/* free all temporaries */ |
917 |
FREETMPS; |
918 |
assert (PL_tmps_ix == -1); |
919 |
|
920 |
/* unwind all extra stacks */ |
921 |
POPSTACK_TO (PL_mainstack); |
922 |
|
923 |
/* unwind main stack */ |
924 |
dounwind (-1); |
925 |
} |
926 |
|
927 |
SvREFCNT_dec (GvSV (PL_defgv)); |
928 |
SvREFCNT_dec (GvAV (PL_defgv)); |
929 |
SvREFCNT_dec (GvSV (PL_errgv)); |
930 |
SvREFCNT_dec (PL_defoutgv); |
931 |
SvREFCNT_dec (PL_rs); |
932 |
SvREFCNT_dec (GvSV (irsgv)); |
933 |
|
934 |
SvREFCNT_dec (PL_diehook); |
935 |
SvREFCNT_dec (PL_warnhook); |
936 |
|
937 |
SvREFCNT_dec (coro->saved_deffh); |
938 |
SvREFCNT_dec (coro->rouse_cb); |
939 |
SvREFCNT_dec (coro->invoke_cb); |
940 |
SvREFCNT_dec (coro->invoke_av); |
941 |
|
942 |
coro_destruct_stacks (aTHX); |
943 |
} |
944 |
|
945 |
INLINE void |
946 |
free_coro_mortal (pTHX) |
947 |
{ |
948 |
if (expect_true (coro_mortal)) |
949 |
{ |
950 |
SvREFCNT_dec (coro_mortal); |
951 |
coro_mortal = 0; |
952 |
} |
953 |
} |
954 |
|
955 |
static int |
956 |
runops_trace (pTHX) |
957 |
{ |
958 |
COP *oldcop = 0; |
959 |
int oldcxix = -2; |
960 |
struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */ |
961 |
coro_cctx *cctx = coro->cctx; |
962 |
|
963 |
while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
964 |
{ |
965 |
PERL_ASYNC_CHECK (); |
966 |
|
967 |
if (cctx->flags & CC_TRACE_ALL) |
968 |
{ |
969 |
if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) |
970 |
{ |
971 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
972 |
SV **bot, **top; |
973 |
AV *av = newAV (); /* return values */ |
974 |
SV **cb; |
975 |
dSP; |
976 |
|
977 |
GV *gv = CvGV (cx->blk_sub.cv); |
978 |
SV *fullname = sv_2mortal (newSV (0)); |
979 |
if (isGV (gv)) |
980 |
gv_efullname3 (fullname, gv, 0); |
981 |
|
982 |
bot = PL_stack_base + cx->blk_oldsp + 1; |
983 |
top = cx->blk_gimme == G_ARRAY ? SP + 1 |
984 |
: cx->blk_gimme == G_SCALAR ? bot + 1 |
985 |
: bot; |
986 |
|
987 |
av_extend (av, top - bot); |
988 |
while (bot < top) |
989 |
av_push (av, SvREFCNT_inc_NN (*bot++)); |
990 |
|
991 |
PL_runops = RUNOPS_DEFAULT; |
992 |
ENTER; |
993 |
SAVETMPS; |
994 |
EXTEND (SP, 3); |
995 |
PUSHMARK (SP); |
996 |
PUSHs (&PL_sv_no); |
997 |
PUSHs (fullname); |
998 |
PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
999 |
PUTBACK; |
1000 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
1001 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1002 |
SPAGAIN; |
1003 |
FREETMPS; |
1004 |
LEAVE; |
1005 |
PL_runops = runops_trace; |
1006 |
} |
1007 |
|
1008 |
if (oldcop != PL_curcop) |
1009 |
{ |
1010 |
oldcop = PL_curcop; |
1011 |
|
1012 |
if (PL_curcop != &PL_compiling) |
1013 |
{ |
1014 |
SV **cb; |
1015 |
|
1016 |
if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) |
1017 |
{ |
1018 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
1019 |
|
1020 |
if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
1021 |
{ |
1022 |
runops_proc_t old_runops = PL_runops; |
1023 |
dSP; |
1024 |
GV *gv = CvGV (cx->blk_sub.cv); |
1025 |
SV *fullname = sv_2mortal (newSV (0)); |
1026 |
|
1027 |
if (isGV (gv)) |
1028 |
gv_efullname3 (fullname, gv, 0); |
1029 |
|
1030 |
PL_runops = RUNOPS_DEFAULT; |
1031 |
ENTER; |
1032 |
SAVETMPS; |
1033 |
EXTEND (SP, 3); |
1034 |
PUSHMARK (SP); |
1035 |
PUSHs (&PL_sv_yes); |
1036 |
PUSHs (fullname); |
1037 |
PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
1038 |
PUTBACK; |
1039 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
1040 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1041 |
SPAGAIN; |
1042 |
FREETMPS; |
1043 |
LEAVE; |
1044 |
PL_runops = runops_trace; |
1045 |
} |
1046 |
|
1047 |
oldcxix = cxstack_ix; |
1048 |
} |
1049 |
|
1050 |
if (cctx->flags & CC_TRACE_LINE) |
1051 |
{ |
1052 |
dSP; |
1053 |
|
1054 |
PL_runops = RUNOPS_DEFAULT; |
1055 |
ENTER; |
1056 |
SAVETMPS; |
1057 |
EXTEND (SP, 3); |
1058 |
PL_runops = RUNOPS_DEFAULT; |
1059 |
PUSHMARK (SP); |
1060 |
PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
1061 |
PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
1062 |
PUTBACK; |
1063 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
1064 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1065 |
SPAGAIN; |
1066 |
FREETMPS; |
1067 |
LEAVE; |
1068 |
PL_runops = runops_trace; |
1069 |
} |
1070 |
} |
1071 |
} |
1072 |
} |
1073 |
} |
1074 |
|
1075 |
TAINT_NOT; |
1076 |
return 0; |
1077 |
} |
1078 |
|
1079 |
static struct coro_cctx *cctx_ssl_cctx; |
1080 |
static struct CoroSLF cctx_ssl_frame; |
1081 |
|
1082 |
static void |
1083 |
slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
1084 |
{ |
1085 |
ta->prev = (struct coro *)cctx_ssl_cctx; |
1086 |
ta->next = 0; |
1087 |
} |
1088 |
|
1089 |
static int |
1090 |
slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) |
1091 |
{ |
1092 |
*frame = cctx_ssl_frame; |
1093 |
|
1094 |
return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ |
1095 |
} |
1096 |
|
1097 |
/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ |
1098 |
static void NOINLINE |
1099 |
cctx_prepare (pTHX_ coro_cctx *cctx) |
1100 |
{ |
1101 |
PL_top_env = &PL_start_env; |
1102 |
|
1103 |
if (cctx->flags & CC_TRACE) |
1104 |
PL_runops = runops_trace; |
1105 |
|
1106 |
/* we already must be executing an SLF op, there is no other valid way |
1107 |
* that can lead to creation of a new cctx */ |
1108 |
assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", |
1109 |
slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); |
1110 |
|
1111 |
/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ |
1112 |
cctx_ssl_cctx = cctx; |
1113 |
cctx_ssl_frame = slf_frame; |
1114 |
|
1115 |
slf_frame.prepare = slf_prepare_set_stacklevel; |
1116 |
slf_frame.check = slf_check_set_stacklevel; |
1117 |
} |
1118 |
|
1119 |
/* the tail of transfer: execute stuff we can only do after a transfer */ |
1120 |
INLINE void |
1121 |
transfer_tail (pTHX) |
1122 |
{ |
1123 |
free_coro_mortal (aTHX); |
1124 |
} |
1125 |
|
1126 |
/* |
1127 |
* this is a _very_ stripped down perl interpreter ;) |
1128 |
*/ |
1129 |
static void |
1130 |
cctx_run (void *arg) |
1131 |
{ |
1132 |
#ifdef USE_ITHREADS |
1133 |
# if CORO_PTHREAD |
1134 |
PERL_SET_CONTEXT (coro_thx); |
1135 |
# endif |
1136 |
#endif |
1137 |
{ |
1138 |
dTHX; |
1139 |
|
1140 |
/* normally we would need to skip the entersub here */ |
1141 |
/* not doing so will re-execute it, which is exactly what we want */ |
1142 |
/* PL_nop = PL_nop->op_next */ |
1143 |
|
1144 |
/* inject a fake subroutine call to cctx_init */ |
1145 |
cctx_prepare (aTHX_ (coro_cctx *)arg); |
1146 |
|
1147 |
/* cctx_run is the alternative tail of transfer() */ |
1148 |
transfer_tail (aTHX); |
1149 |
|
1150 |
/* somebody or something will hit me for both perl_run and PL_restartop */ |
1151 |
PL_restartop = PL_op; |
1152 |
perl_run (PL_curinterp); |
1153 |
/* |
1154 |
* Unfortunately, there is no way to get at the return values of the |
1155 |
* coro body here, as perl_run destroys these |
1156 |
*/ |
1157 |
|
1158 |
/* |
1159 |
* If perl-run returns we assume exit() was being called or the coro |
1160 |
* fell off the end, which seems to be the only valid (non-bug) |
1161 |
* reason for perl_run to return. We try to exit by jumping to the |
1162 |
* bootstrap-time "top" top_env, as we cannot restore the "main" |
1163 |
* coroutine as Coro has no such concept |
1164 |
*/ |
1165 |
PL_top_env = main_top_env; |
1166 |
JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
1167 |
} |
1168 |
} |
1169 |
|
1170 |
static coro_cctx * |
1171 |
cctx_new () |
1172 |
{ |
1173 |
coro_cctx *cctx; |
1174 |
|
1175 |
++cctx_count; |
1176 |
New (0, cctx, 1, coro_cctx); |
1177 |
|
1178 |
cctx->gen = cctx_gen; |
1179 |
cctx->flags = 0; |
1180 |
cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
1181 |
|
1182 |
return cctx; |
1183 |
} |
1184 |
|
1185 |
/* create a new cctx only suitable as source */ |
1186 |
static coro_cctx * |
1187 |
cctx_new_empty () |
1188 |
{ |
1189 |
coro_cctx *cctx = cctx_new (); |
1190 |
|
1191 |
cctx->sptr = 0; |
1192 |
coro_create (&cctx->cctx, 0, 0, 0, 0); |
1193 |
|
1194 |
return cctx; |
1195 |
} |
1196 |
|
1197 |
/* create a new cctx suitable as destination/running a perl interpreter */ |
1198 |
static coro_cctx * |
1199 |
cctx_new_run () |
1200 |
{ |
1201 |
coro_cctx *cctx = cctx_new (); |
1202 |
void *stack_start; |
1203 |
size_t stack_size; |
1204 |
|
1205 |
#if HAVE_MMAP |
1206 |
cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
1207 |
/* mmap supposedly does allocate-on-write for us */ |
1208 |
cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
1209 |
|
1210 |
if (cctx->sptr != (void *)-1) |
1211 |
{ |
1212 |
#if CORO_STACKGUARD |
1213 |
mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
1214 |
#endif |
1215 |
stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
1216 |
stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
1217 |
cctx->flags |= CC_MAPPED; |
1218 |
} |
1219 |
else |
1220 |
#endif |
1221 |
{ |
1222 |
cctx->ssize = cctx_stacksize * (long)sizeof (long); |
1223 |
New (0, cctx->sptr, cctx_stacksize, long); |
1224 |
|
1225 |
if (!cctx->sptr) |
1226 |
{ |
1227 |
perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
1228 |
_exit (EXIT_FAILURE); |
1229 |
} |
1230 |
|
1231 |
stack_start = cctx->sptr; |
1232 |
stack_size = cctx->ssize; |
1233 |
} |
1234 |
|
1235 |
#if CORO_USE_VALGRIND |
1236 |
cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
1237 |
#endif |
1238 |
|
1239 |
coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
1240 |
|
1241 |
return cctx; |
1242 |
} |
1243 |
|
1244 |
static void |
1245 |
cctx_destroy (coro_cctx *cctx) |
1246 |
{ |
1247 |
if (!cctx) |
1248 |
return; |
1249 |
|
1250 |
--cctx_count; |
1251 |
coro_destroy (&cctx->cctx); |
1252 |
|
1253 |
/* coro_transfer creates new, empty cctx's */ |
1254 |
if (cctx->sptr) |
1255 |
{ |
1256 |
#if CORO_USE_VALGRIND |
1257 |
VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
1258 |
#endif |
1259 |
|
1260 |
#if HAVE_MMAP |
1261 |
if (cctx->flags & CC_MAPPED) |
1262 |
munmap (cctx->sptr, cctx->ssize); |
1263 |
else |
1264 |
#endif |
1265 |
Safefree (cctx->sptr); |
1266 |
} |
1267 |
|
1268 |
Safefree (cctx); |
1269 |
} |
1270 |
|
1271 |
/* wether this cctx should be destructed */ |
1272 |
#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
1273 |
|
1274 |
static coro_cctx * |
1275 |
cctx_get (pTHX) |
1276 |
{ |
1277 |
while (expect_true (cctx_first)) |
1278 |
{ |
1279 |
coro_cctx *cctx = cctx_first; |
1280 |
cctx_first = cctx->next; |
1281 |
--cctx_idle; |
1282 |
|
1283 |
if (expect_true (!CCTX_EXPIRED (cctx))) |
1284 |
return cctx; |
1285 |
|
1286 |
cctx_destroy (cctx); |
1287 |
} |
1288 |
|
1289 |
return cctx_new_run (); |
1290 |
} |
1291 |
|
1292 |
static void |
1293 |
cctx_put (coro_cctx *cctx) |
1294 |
{ |
1295 |
assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
1296 |
|
1297 |
/* free another cctx if overlimit */ |
1298 |
if (expect_false (cctx_idle >= cctx_max_idle)) |
1299 |
{ |
1300 |
coro_cctx *first = cctx_first; |
1301 |
cctx_first = first->next; |
1302 |
--cctx_idle; |
1303 |
|
1304 |
cctx_destroy (first); |
1305 |
} |
1306 |
|
1307 |
++cctx_idle; |
1308 |
cctx->next = cctx_first; |
1309 |
cctx_first = cctx; |
1310 |
} |
1311 |
|
1312 |
/** coroutine switching *****************************************************/ |
1313 |
|
1314 |
static void |
1315 |
transfer_check (pTHX_ struct coro *prev, struct coro *next) |
1316 |
{ |
1317 |
/* TODO: throwing up here is considered harmful */ |
1318 |
|
1319 |
if (expect_true (prev != next)) |
1320 |
{ |
1321 |
if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
1322 |
croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); |
1323 |
|
1324 |
if (expect_false (next->flags & CF_RUNNING)) |
1325 |
croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); |
1326 |
|
1327 |
if (expect_false (next->flags & CF_DESTROYED)) |
1328 |
croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); |
1329 |
|
1330 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
1331 |
if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
1332 |
croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); |
1333 |
#endif |
1334 |
} |
1335 |
} |
1336 |
|
1337 |
/* always use the TRANSFER macro */ |
1338 |
static void NOINLINE /* noinline so we have a fixed stackframe */ |
1339 |
transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
1340 |
{ |
1341 |
dSTACKLEVEL; |
1342 |
|
1343 |
/* sometimes transfer is only called to set idle_sp */ |
1344 |
if (expect_false (!next)) |
1345 |
{ |
1346 |
((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
1347 |
assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1348 |
} |
1349 |
else if (expect_true (prev != next)) |
1350 |
{ |
1351 |
coro_cctx *prev__cctx; |
1352 |
|
1353 |
if (expect_false (prev->flags & CF_NEW)) |
1354 |
{ |
1355 |
/* create a new empty/source context */ |
1356 |
prev->cctx = cctx_new_empty (); |
1357 |
prev->flags &= ~CF_NEW; |
1358 |
prev->flags |= CF_RUNNING; |
1359 |
} |
1360 |
|
1361 |
prev->flags &= ~CF_RUNNING; |
1362 |
next->flags |= CF_RUNNING; |
1363 |
|
1364 |
/* first get rid of the old state */ |
1365 |
save_perl (aTHX_ prev); |
1366 |
|
1367 |
if (expect_false (next->flags & CF_NEW)) |
1368 |
{ |
1369 |
/* need to start coroutine */ |
1370 |
next->flags &= ~CF_NEW; |
1371 |
/* setup coroutine call */ |
1372 |
coro_setup (aTHX_ next); |
1373 |
} |
1374 |
else |
1375 |
load_perl (aTHX_ next); |
1376 |
|
1377 |
prev__cctx = prev->cctx; |
1378 |
|
1379 |
/* possibly untie and reuse the cctx */ |
1380 |
if (expect_true ( |
1381 |
prev__cctx->idle_sp == STACKLEVEL |
1382 |
&& !(prev__cctx->flags & CC_TRACE) |
1383 |
&& !force_cctx |
1384 |
)) |
1385 |
{ |
1386 |
/* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
1387 |
assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); |
1388 |
|
1389 |
prev->cctx = 0; |
1390 |
|
1391 |
/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
1392 |
/* without this the next cctx_get might destroy the prev__cctx while still in use */ |
1393 |
if (expect_false (CCTX_EXPIRED (prev__cctx))) |
1394 |
if (!next->cctx) |
1395 |
next->cctx = cctx_get (aTHX); |
1396 |
|
1397 |
cctx_put (prev__cctx); |
1398 |
} |
1399 |
|
1400 |
++next->usecount; |
1401 |
|
1402 |
if (expect_true (!next->cctx)) |
1403 |
next->cctx = cctx_get (aTHX); |
1404 |
|
1405 |
if (expect_false (prev__cctx != next->cctx)) |
1406 |
{ |
1407 |
prev__cctx->top_env = PL_top_env; |
1408 |
PL_top_env = next->cctx->top_env; |
1409 |
coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
1410 |
} |
1411 |
|
1412 |
transfer_tail (aTHX); |
1413 |
} |
1414 |
} |
1415 |
|
1416 |
#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
1417 |
#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
1418 |
|
1419 |
/** high level stuff ********************************************************/ |
1420 |
|
1421 |
static int |
1422 |
coro_state_destroy (pTHX_ struct coro *coro) |
1423 |
{ |
1424 |
if (coro->flags & CF_DESTROYED) |
1425 |
return 0; |
1426 |
|
1427 |
if (coro->on_destroy) |
1428 |
coro->on_destroy (aTHX_ coro); |
1429 |
|
1430 |
coro->flags |= CF_DESTROYED; |
1431 |
|
1432 |
if (coro->flags & CF_READY) |
1433 |
{ |
1434 |
/* reduce nready, as destroying a ready coro effectively unreadies it */ |
1435 |
/* alternative: look through all ready queues and remove the coro */ |
1436 |
--coro_nready; |
1437 |
} |
1438 |
else |
1439 |
coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
1440 |
|
1441 |
if (coro->mainstack && coro->mainstack != main_mainstack) |
1442 |
{ |
1443 |
struct coro temp; |
1444 |
|
1445 |
assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); |
1446 |
|
1447 |
save_perl (aTHX_ &temp); |
1448 |
load_perl (aTHX_ coro); |
1449 |
|
1450 |
coro_destruct (aTHX_ coro); |
1451 |
|
1452 |
load_perl (aTHX_ &temp); |
1453 |
|
1454 |
coro->slot = 0; |
1455 |
} |
1456 |
|
1457 |
cctx_destroy (coro->cctx); |
1458 |
SvREFCNT_dec (coro->startcv); |
1459 |
SvREFCNT_dec (coro->args); |
1460 |
SvREFCNT_dec (CORO_THROW); |
1461 |
|
1462 |
if (coro->next) coro->next->prev = coro->prev; |
1463 |
if (coro->prev) coro->prev->next = coro->next; |
1464 |
if (coro == coro_first) coro_first = coro->next; |
1465 |
|
1466 |
return 1; |
1467 |
} |
1468 |
|
1469 |
static int |
1470 |
coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
1471 |
{ |
1472 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1473 |
mg->mg_ptr = 0; |
1474 |
|
1475 |
coro->hv = 0; |
1476 |
|
1477 |
if (--coro->refcnt < 0) |
1478 |
{ |
1479 |
coro_state_destroy (aTHX_ coro); |
1480 |
Safefree (coro); |
1481 |
} |
1482 |
|
1483 |
return 0; |
1484 |
} |
1485 |
|
1486 |
static int |
1487 |
coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
1488 |
{ |
1489 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1490 |
|
1491 |
++coro->refcnt; |
1492 |
|
1493 |
return 0; |
1494 |
} |
1495 |
|
1496 |
static MGVTBL coro_state_vtbl = { |
1497 |
0, 0, 0, 0, |
1498 |
coro_state_free, |
1499 |
0, |
1500 |
#ifdef MGf_DUP |
1501 |
coro_state_dup, |
1502 |
#else |
1503 |
# define MGf_DUP 0 |
1504 |
#endif |
1505 |
}; |
1506 |
|
1507 |
static void |
1508 |
prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
1509 |
{ |
1510 |
ta->prev = SvSTATE (prev_sv); |
1511 |
ta->next = SvSTATE (next_sv); |
1512 |
TRANSFER_CHECK (*ta); |
1513 |
} |
1514 |
|
1515 |
static void |
1516 |
api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
1517 |
{ |
1518 |
struct coro_transfer_args ta; |
1519 |
|
1520 |
prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1521 |
TRANSFER (ta, 1); |
1522 |
} |
1523 |
|
1524 |
/*****************************************************************************/ |
1525 |
/* gensub: simple closure generation utility */ |
1526 |
|
1527 |
#define GENSUB_ARG CvXSUBANY (cv).any_ptr |
1528 |
|
1529 |
/* create a closure from XS, returns a code reference */ |
1530 |
/* the arg can be accessed via GENSUB_ARG from the callback */ |
1531 |
/* the callback must use dXSARGS/XSRETURN */ |
1532 |
static SV * |
1533 |
gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
1534 |
{ |
1535 |
CV *cv = (CV *)newSV (0); |
1536 |
|
1537 |
sv_upgrade ((SV *)cv, SVt_PVCV); |
1538 |
|
1539 |
CvANON_on (cv); |
1540 |
CvISXSUB_on (cv); |
1541 |
CvXSUB (cv) = xsub; |
1542 |
GENSUB_ARG = arg; |
1543 |
|
1544 |
return newRV_noinc ((SV *)cv); |
1545 |
} |
1546 |
|
1547 |
/** Coro ********************************************************************/ |
1548 |
|
1549 |
INLINE void |
1550 |
coro_enq (pTHX_ struct coro *coro) |
1551 |
{ |
1552 |
av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); |
1553 |
} |
1554 |
|
1555 |
INLINE SV * |
1556 |
coro_deq (pTHX) |
1557 |
{ |
1558 |
int prio; |
1559 |
|
1560 |
for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) |
1561 |
if (AvFILLp (coro_ready [prio]) >= 0) |
1562 |
return av_shift (coro_ready [prio]); |
1563 |
|
1564 |
return 0; |
1565 |
} |
1566 |
|
1567 |
static int |
1568 |
api_ready (pTHX_ SV *coro_sv) |
1569 |
{ |
1570 |
struct coro *coro; |
1571 |
SV *sv_hook; |
1572 |
void (*xs_hook)(void); |
1573 |
|
1574 |
if (SvROK (coro_sv)) |
1575 |
coro_sv = SvRV (coro_sv); |
1576 |
|
1577 |
coro = SvSTATE (coro_sv); |
1578 |
|
1579 |
if (coro->flags & CF_READY) |
1580 |
return 0; |
1581 |
|
1582 |
coro->flags |= CF_READY; |
1583 |
|
1584 |
sv_hook = coro_nready ? 0 : coro_readyhook; |
1585 |
xs_hook = coro_nready ? 0 : coroapi.readyhook; |
1586 |
|
1587 |
coro_enq (aTHX_ coro); |
1588 |
++coro_nready; |
1589 |
|
1590 |
if (sv_hook) |
1591 |
{ |
1592 |
dSP; |
1593 |
|
1594 |
ENTER; |
1595 |
SAVETMPS; |
1596 |
|
1597 |
PUSHMARK (SP); |
1598 |
PUTBACK; |
1599 |
call_sv (sv_hook, G_VOID | G_DISCARD); |
1600 |
|
1601 |
FREETMPS; |
1602 |
LEAVE; |
1603 |
} |
1604 |
|
1605 |
if (xs_hook) |
1606 |
xs_hook (); |
1607 |
|
1608 |
return 1; |
1609 |
} |
1610 |
|
1611 |
static int |
1612 |
api_is_ready (pTHX_ SV *coro_sv) |
1613 |
{ |
1614 |
return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1615 |
} |
1616 |
|
1617 |
/* expects to own a reference to next->hv */ |
1618 |
INLINE void |
1619 |
prepare_cede_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) |
1620 |
{ |
1621 |
SV *prev_sv = SvRV (coro_current); |
1622 |
|
1623 |
ta->prev = SvSTATE_hv (prev_sv); |
1624 |
ta->next = next; |
1625 |
|
1626 |
TRANSFER_CHECK (*ta); |
1627 |
|
1628 |
SvRV_set (coro_current, next->hv); |
1629 |
|
1630 |
free_coro_mortal (aTHX); |
1631 |
coro_mortal = prev_sv; |
1632 |
} |
1633 |
|
1634 |
static void |
1635 |
prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
1636 |
{ |
1637 |
for (;;) |
1638 |
{ |
1639 |
SV *next_sv = coro_deq (aTHX); |
1640 |
|
1641 |
if (expect_false (!next_sv)) |
1642 |
{ |
1643 |
/* nothing to schedule: call the idle handler */ |
1644 |
dSP; |
1645 |
|
1646 |
ENTER; |
1647 |
SAVETMPS; |
1648 |
|
1649 |
PUSHMARK (SP); |
1650 |
PUTBACK; |
1651 |
call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD); |
1652 |
|
1653 |
FREETMPS; |
1654 |
LEAVE; |
1655 |
} |
1656 |
else |
1657 |
{ |
1658 |
struct coro *next = SvSTATE_hv (next_sv); |
1659 |
|
1660 |
/* cannot transfer to destroyed coros, skip and look for next */ |
1661 |
if (expect_false (next->flags & CF_DESTROYED)) |
1662 |
SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */ |
1663 |
else |
1664 |
{ |
1665 |
next->flags &= ~CF_READY; |
1666 |
--coro_nready; |
1667 |
|
1668 |
return prepare_cede_to (aTHX_ ta, next); |
1669 |
} |
1670 |
} |
1671 |
} |
1672 |
} |
1673 |
|
1674 |
INLINE void |
1675 |
prepare_cede (pTHX_ struct coro_transfer_args *ta) |
1676 |
{ |
1677 |
api_ready (aTHX_ coro_current); |
1678 |
prepare_schedule (aTHX_ ta); |
1679 |
} |
1680 |
|
1681 |
INLINE void |
1682 |
prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
1683 |
{ |
1684 |
SV *prev = SvRV (coro_current); |
1685 |
|
1686 |
if (coro_nready) |
1687 |
{ |
1688 |
prepare_schedule (aTHX_ ta); |
1689 |
api_ready (aTHX_ prev); |
1690 |
} |
1691 |
else |
1692 |
prepare_nop (aTHX_ ta); |
1693 |
} |
1694 |
|
1695 |
static void |
1696 |
api_schedule (pTHX) |
1697 |
{ |
1698 |
struct coro_transfer_args ta; |
1699 |
|
1700 |
prepare_schedule (aTHX_ &ta); |
1701 |
TRANSFER (ta, 1); |
1702 |
} |
1703 |
|
1704 |
static int |
1705 |
api_cede (pTHX) |
1706 |
{ |
1707 |
struct coro_transfer_args ta; |
1708 |
|
1709 |
prepare_cede (aTHX_ &ta); |
1710 |
|
1711 |
if (expect_true (ta.prev != ta.next)) |
1712 |
{ |
1713 |
TRANSFER (ta, 1); |
1714 |
return 1; |
1715 |
} |
1716 |
else |
1717 |
return 0; |
1718 |
} |
1719 |
|
1720 |
static int |
1721 |
api_cede_notself (pTHX) |
1722 |
{ |
1723 |
if (coro_nready) |
1724 |
{ |
1725 |
struct coro_transfer_args ta; |
1726 |
|
1727 |
prepare_cede_notself (aTHX_ &ta); |
1728 |
TRANSFER (ta, 1); |
1729 |
return 1; |
1730 |
} |
1731 |
else |
1732 |
return 0; |
1733 |
} |
1734 |
|
1735 |
static void |
1736 |
api_trace (pTHX_ SV *coro_sv, int flags) |
1737 |
{ |
1738 |
struct coro *coro = SvSTATE (coro_sv); |
1739 |
|
1740 |
if (flags & CC_TRACE) |
1741 |
{ |
1742 |
if (!coro->cctx) |
1743 |
coro->cctx = cctx_new_run (); |
1744 |
else if (!(coro->cctx->flags & CC_TRACE)) |
1745 |
croak ("cannot enable tracing on coroutine with custom stack,"); |
1746 |
|
1747 |
coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
1748 |
} |
1749 |
else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
1750 |
{ |
1751 |
coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
1752 |
|
1753 |
if (coro->flags & CF_RUNNING) |
1754 |
PL_runops = RUNOPS_DEFAULT; |
1755 |
else |
1756 |
coro->slot->runops = RUNOPS_DEFAULT; |
1757 |
} |
1758 |
} |
1759 |
|
1760 |
/*****************************************************************************/ |
1761 |
/* async pool handler */ |
1762 |
|
1763 |
static int |
1764 |
slf_check_pool_handler (pTHX_ struct CoroSLF *frame) |
1765 |
{ |
1766 |
HV *hv = (HV *)SvRV (coro_current); |
1767 |
struct coro *coro = (struct coro *)frame->data; |
1768 |
|
1769 |
if (!coro->invoke_cb) |
1770 |
return 1; /* loop till we have invoke */ |
1771 |
else |
1772 |
{ |
1773 |
hv_store (hv, "desc", sizeof ("desc") - 1, |
1774 |
newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
1775 |
|
1776 |
coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
1777 |
|
1778 |
{ |
1779 |
dSP; |
1780 |
XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0; |
1781 |
PUTBACK; |
1782 |
} |
1783 |
|
1784 |
SvREFCNT_dec (GvAV (PL_defgv)); |
1785 |
GvAV (PL_defgv) = coro->invoke_av; |
1786 |
coro->invoke_av = 0; |
1787 |
|
1788 |
return 0; |
1789 |
} |
1790 |
} |
1791 |
|
1792 |
static void |
1793 |
slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
1794 |
{ |
1795 |
HV *hv = (HV *)SvRV (coro_current); |
1796 |
struct coro *coro = SvSTATE_hv ((SV *)hv); |
1797 |
|
1798 |
if (expect_true (coro->saved_deffh)) |
1799 |
{ |
1800 |
/* subsequent iteration */ |
1801 |
SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
1802 |
coro->saved_deffh = 0; |
1803 |
|
1804 |
if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
1805 |
|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
1806 |
{ |
1807 |
coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); |
1808 |
coro->invoke_av = newAV (); |
1809 |
|
1810 |
frame->prepare = prepare_nop; |
1811 |
} |
1812 |
else |
1813 |
{ |
1814 |
av_clear (GvAV (PL_defgv)); |
1815 |
hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); |
1816 |
|
1817 |
coro->prio = 0; |
1818 |
|
1819 |
if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
1820 |
api_trace (aTHX_ coro_current, 0); |
1821 |
|
1822 |
frame->prepare = prepare_schedule; |
1823 |
av_push (av_async_pool, SvREFCNT_inc (hv)); |
1824 |
} |
1825 |
} |
1826 |
else |
1827 |
{ |
1828 |
/* first iteration, simply fall through */ |
1829 |
frame->prepare = prepare_nop; |
1830 |
} |
1831 |
|
1832 |
frame->check = slf_check_pool_handler; |
1833 |
frame->data = (void *)coro; |
1834 |
} |
1835 |
|
1836 |
/*****************************************************************************/ |
1837 |
/* rouse callback */ |
1838 |
|
1839 |
#define CORO_MAGIC_type_rouse PERL_MAGIC_ext |
1840 |
|
1841 |
static void |
1842 |
coro_rouse_callback (pTHX_ CV *cv) |
1843 |
{ |
1844 |
dXSARGS; |
1845 |
SV *data = (SV *)GENSUB_ARG; |
1846 |
|
1847 |
if (SvTYPE (SvRV (data)) != SVt_PVAV) |
1848 |
{ |
1849 |
/* first call, set args */ |
1850 |
AV *av = newAV (); |
1851 |
SV *coro = SvRV (data); |
1852 |
|
1853 |
SvRV_set (data, (SV *)av); |
1854 |
api_ready (aTHX_ coro); |
1855 |
SvREFCNT_dec (coro); |
1856 |
|
1857 |
/* better take a full copy of the arguments */ |
1858 |
while (items--) |
1859 |
av_store (av, items, newSVsv (ST (items))); |
1860 |
} |
1861 |
|
1862 |
XSRETURN_EMPTY; |
1863 |
} |
1864 |
|
1865 |
static int |
1866 |
slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) |
1867 |
{ |
1868 |
SV *data = (SV *)frame->data; |
1869 |
|
1870 |
if (CORO_THROW) |
1871 |
return 0; |
1872 |
|
1873 |
if (SvTYPE (SvRV (data)) != SVt_PVAV) |
1874 |
return 1; |
1875 |
|
1876 |
/* now push all results on the stack */ |
1877 |
{ |
1878 |
dSP; |
1879 |
AV *av = (AV *)SvRV (data); |
1880 |
int i; |
1881 |
|
1882 |
EXTEND (SP, AvFILLp (av) + 1); |
1883 |
for (i = 0; i <= AvFILLp (av); ++i) |
1884 |
PUSHs (sv_2mortal (AvARRAY (av)[i])); |
1885 |
|
1886 |
/* we have stolen the elements, so ste length to zero and free */ |
1887 |
AvFILLp (av) = -1; |
1888 |
av_undef (av); |
1889 |
|
1890 |
PUTBACK; |
1891 |
} |
1892 |
|
1893 |
return 0; |
1894 |
} |
1895 |
|
1896 |
static void |
1897 |
slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
1898 |
{ |
1899 |
SV *cb; |
1900 |
|
1901 |
if (items) |
1902 |
cb = arg [0]; |
1903 |
else |
1904 |
{ |
1905 |
struct coro *coro = SvSTATE_current; |
1906 |
|
1907 |
if (!coro->rouse_cb) |
1908 |
croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,"); |
1909 |
|
1910 |
cb = sv_2mortal (coro->rouse_cb); |
1911 |
coro->rouse_cb = 0; |
1912 |
} |
1913 |
|
1914 |
if (!SvROK (cb) |
1915 |
|| SvTYPE (SvRV (cb)) != SVt_PVCV |
1916 |
|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) |
1917 |
croak ("Coro::rouse_wait called with illegal callback argument,"); |
1918 |
|
1919 |
{ |
1920 |
CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ |
1921 |
SV *data = (SV *)GENSUB_ARG; |
1922 |
|
1923 |
frame->data = (void *)data; |
1924 |
frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; |
1925 |
frame->check = slf_check_rouse_wait; |
1926 |
} |
1927 |
} |
1928 |
|
1929 |
static SV * |
1930 |
coro_new_rouse_cb (pTHX) |
1931 |
{ |
1932 |
HV *hv = (HV *)SvRV (coro_current); |
1933 |
struct coro *coro = SvSTATE_hv (hv); |
1934 |
SV *data = newRV_inc ((SV *)hv); |
1935 |
SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); |
1936 |
|
1937 |
sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); |
1938 |
SvREFCNT_dec (data); /* magicext increases the refcount */ |
1939 |
|
1940 |
SvREFCNT_dec (coro->rouse_cb); |
1941 |
coro->rouse_cb = SvREFCNT_inc_NN (cb); |
1942 |
|
1943 |
return cb; |
1944 |
} |
1945 |
|
1946 |
/*****************************************************************************/ |
1947 |
/* schedule-like-function opcode (SLF) */ |
1948 |
|
1949 |
static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
1950 |
static const CV *slf_cv; |
1951 |
static SV **slf_argv; |
1952 |
static int slf_argc, slf_arga; /* count, allocated */ |
1953 |
static I32 slf_ax; /* top of stack, for restore */ |
1954 |
|
1955 |
/* this restores the stack in the case we patched the entersub, to */ |
1956 |
/* recreate the stack frame as perl will on following calls */ |
1957 |
/* since entersub cleared the stack */ |
1958 |
static OP * |
1959 |
pp_restore (pTHX) |
1960 |
{ |
1961 |
int i; |
1962 |
SV **SP = PL_stack_base + slf_ax; |
1963 |
|
1964 |
PUSHMARK (SP); |
1965 |
|
1966 |
EXTEND (SP, slf_argc + 1); |
1967 |
|
1968 |
for (i = 0; i < slf_argc; ++i) |
1969 |
PUSHs (sv_2mortal (slf_argv [i])); |
1970 |
|
1971 |
PUSHs ((SV *)CvGV (slf_cv)); |
1972 |
|
1973 |
RETURNOP (slf_restore.op_first); |
1974 |
} |
1975 |
|
1976 |
static void |
1977 |
slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
1978 |
{ |
1979 |
SV **arg = (SV **)slf_frame.data; |
1980 |
|
1981 |
prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
1982 |
} |
1983 |
|
1984 |
static void |
1985 |
slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
1986 |
{ |
1987 |
if (items != 2) |
1988 |
croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
1989 |
|
1990 |
frame->prepare = slf_prepare_transfer; |
1991 |
frame->check = slf_check_nop; |
1992 |
frame->data = (void *)arg; /* let's hope it will stay valid */ |
1993 |
} |
1994 |
|
1995 |
static void |
1996 |
slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
1997 |
{ |
1998 |
frame->prepare = prepare_schedule; |
1999 |
frame->check = slf_check_nop; |
2000 |
} |
2001 |
|
2002 |
static void |
2003 |
slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2004 |
{ |
2005 |
frame->prepare = prepare_cede; |
2006 |
frame->check = slf_check_nop; |
2007 |
} |
2008 |
|
2009 |
static void |
2010 |
slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2011 |
{ |
2012 |
frame->prepare = prepare_cede_notself; |
2013 |
frame->check = slf_check_nop; |
2014 |
} |
2015 |
|
2016 |
/* |
2017 |
* these not obviously related functions are all rolled into one |
2018 |
* function to increase chances that they all will call transfer with the same |
2019 |
* stack offset |
2020 |
* SLF stands for "schedule-like-function". |
2021 |
*/ |
2022 |
static OP * |
2023 |
pp_slf (pTHX) |
2024 |
{ |
2025 |
I32 checkmark; /* mark SP to see how many elements check has pushed */ |
2026 |
|
2027 |
/* set up the slf frame, unless it has already been set-up */ |
2028 |
/* the latter happens when a new coro has been started */ |
2029 |
/* or when a new cctx was attached to an existing coroutine */ |
2030 |
if (expect_true (!slf_frame.prepare)) |
2031 |
{ |
2032 |
/* first iteration */ |
2033 |
dSP; |
2034 |
SV **arg = PL_stack_base + TOPMARK + 1; |
2035 |
int items = SP - arg; /* args without function object */ |
2036 |
SV *gv = *sp; |
2037 |
|
2038 |
/* do a quick consistency check on the "function" object, and if it isn't */ |
2039 |
/* for us, divert to the real entersub */ |
2040 |
if (SvTYPE (gv) != SVt_PVGV |
2041 |
|| !GvCV (gv) |
2042 |
|| !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
2043 |
return PL_ppaddr[OP_ENTERSUB](aTHX); |
2044 |
|
2045 |
if (!(PL_op->op_flags & OPf_STACKED)) |
2046 |
{ |
2047 |
/* ampersand-form of call, use @_ instead of stack */ |
2048 |
AV *av = GvAV (PL_defgv); |
2049 |
arg = AvARRAY (av); |
2050 |
items = AvFILLp (av) + 1; |
2051 |
} |
2052 |
|
2053 |
/* now call the init function, which needs to set up slf_frame */ |
2054 |
((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
2055 |
(aTHX_ &slf_frame, GvCV (gv), arg, items); |
2056 |
|
2057 |
/* pop args */ |
2058 |
SP = PL_stack_base + POPMARK; |
2059 |
|
2060 |
PUTBACK; |
2061 |
} |
2062 |
|
2063 |
/* now that we have a slf_frame, interpret it! */ |
2064 |
/* we use a callback system not to make the code needlessly */ |
2065 |
/* complicated, but so we can run multiple perl coros from one cctx */ |
2066 |
|
2067 |
do |
2068 |
{ |
2069 |
struct coro_transfer_args ta; |
2070 |
|
2071 |
slf_frame.prepare (aTHX_ &ta); |
2072 |
TRANSFER (ta, 0); |
2073 |
|
2074 |
checkmark = PL_stack_sp - PL_stack_base; |
2075 |
} |
2076 |
while (slf_frame.check (aTHX_ &slf_frame)); |
2077 |
|
2078 |
slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ |
2079 |
|
2080 |
/* exception handling */ |
2081 |
if (expect_false (CORO_THROW)) |
2082 |
{ |
2083 |
SV *exception = sv_2mortal (CORO_THROW); |
2084 |
|
2085 |
CORO_THROW = 0; |
2086 |
sv_setsv (ERRSV, exception); |
2087 |
croak (0); |
2088 |
} |
2089 |
|
2090 |
/* return value handling - mostly like entersub */ |
2091 |
/* make sure we put something on the stack in scalar context */ |
2092 |
if (GIMME_V == G_SCALAR) |
2093 |
{ |
2094 |
dSP; |
2095 |
SV **bot = PL_stack_base + checkmark; |
2096 |
|
2097 |
if (sp == bot) /* too few, push undef */ |
2098 |
bot [1] = &PL_sv_undef; |
2099 |
else if (sp != bot + 1) /* too many, take last one */ |
2100 |
bot [1] = *sp; |
2101 |
|
2102 |
SP = bot + 1; |
2103 |
|
2104 |
PUTBACK; |
2105 |
} |
2106 |
|
2107 |
return NORMAL; |
2108 |
} |
2109 |
|
2110 |
static void |
2111 |
api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax) |
2112 |
{ |
2113 |
int i; |
2114 |
SV **arg = PL_stack_base + ax; |
2115 |
int items = PL_stack_sp - arg + 1; |
2116 |
|
2117 |
assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
2118 |
|
2119 |
if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
2120 |
&& PL_op->op_ppaddr != pp_slf) |
2121 |
croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
2122 |
|
2123 |
CvFLAGS (cv) |= CVf_SLF; |
2124 |
CvXSUBANY (cv).any_ptr = (void *)init_cb; |
2125 |
slf_cv = cv; |
2126 |
|
2127 |
/* we patch the op, and then re-run the whole call */ |
2128 |
/* we have to put the same argument on the stack for this to work */ |
2129 |
/* and this will be done by pp_restore */ |
2130 |
slf_restore.op_next = (OP *)&slf_restore; |
2131 |
slf_restore.op_type = OP_CUSTOM; |
2132 |
slf_restore.op_ppaddr = pp_restore; |
2133 |
slf_restore.op_first = PL_op; |
2134 |
|
2135 |
slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */ |
2136 |
|
2137 |
if (PL_op->op_flags & OPf_STACKED) |
2138 |
{ |
2139 |
if (items > slf_arga) |
2140 |
{ |
2141 |
slf_arga = items; |
2142 |
free (slf_argv); |
2143 |
slf_argv = malloc (slf_arga * sizeof (SV *)); |
2144 |
} |
2145 |
|
2146 |
slf_argc = items; |
2147 |
|
2148 |
for (i = 0; i < items; ++i) |
2149 |
slf_argv [i] = SvREFCNT_inc (arg [i]); |
2150 |
} |
2151 |
else |
2152 |
slf_argc = 0; |
2153 |
|
2154 |
PL_op->op_ppaddr = pp_slf; |
2155 |
PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ |
2156 |
|
2157 |
PL_op = (OP *)&slf_restore; |
2158 |
} |
2159 |
|
2160 |
/*****************************************************************************/ |
2161 |
/* PerlIO::cede */ |
2162 |
|
2163 |
typedef struct |
2164 |
{ |
2165 |
PerlIOBuf base; |
2166 |
NV next, every; |
2167 |
} PerlIOCede; |
2168 |
|
2169 |
static IV |
2170 |
PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
2171 |
{ |
2172 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
2173 |
|
2174 |
self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
2175 |
self->next = nvtime () + self->every; |
2176 |
|
2177 |
return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
2178 |
} |
2179 |
|
2180 |
static SV * |
2181 |
PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
2182 |
{ |
2183 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
2184 |
|
2185 |
return newSVnv (self->every); |
2186 |
} |
2187 |
|
2188 |
static IV |
2189 |
PerlIOCede_flush (pTHX_ PerlIO *f) |
2190 |
{ |
2191 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
2192 |
double now = nvtime (); |
2193 |
|
2194 |
if (now >= self->next) |
2195 |
{ |
2196 |
api_cede (aTHX); |
2197 |
self->next = now + self->every; |
2198 |
} |
2199 |
|
2200 |
return PerlIOBuf_flush (aTHX_ f); |
2201 |
} |
2202 |
|
2203 |
static PerlIO_funcs PerlIO_cede = |
2204 |
{ |
2205 |
sizeof(PerlIO_funcs), |
2206 |
"cede", |
2207 |
sizeof(PerlIOCede), |
2208 |
PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
2209 |
PerlIOCede_pushed, |
2210 |
PerlIOBuf_popped, |
2211 |
PerlIOBuf_open, |
2212 |
PerlIOBase_binmode, |
2213 |
PerlIOCede_getarg, |
2214 |
PerlIOBase_fileno, |
2215 |
PerlIOBuf_dup, |
2216 |
PerlIOBuf_read, |
2217 |
PerlIOBuf_unread, |
2218 |
PerlIOBuf_write, |
2219 |
PerlIOBuf_seek, |
2220 |
PerlIOBuf_tell, |
2221 |
PerlIOBuf_close, |
2222 |
PerlIOCede_flush, |
2223 |
PerlIOBuf_fill, |
2224 |
PerlIOBase_eof, |
2225 |
PerlIOBase_error, |
2226 |
PerlIOBase_clearerr, |
2227 |
PerlIOBase_setlinebuf, |
2228 |
PerlIOBuf_get_base, |
2229 |
PerlIOBuf_bufsiz, |
2230 |
PerlIOBuf_get_ptr, |
2231 |
PerlIOBuf_get_cnt, |
2232 |
PerlIOBuf_set_ptrcnt, |
2233 |
}; |
2234 |
|
2235 |
/*****************************************************************************/ |
2236 |
/* Coro::Semaphore & Coro::Signal */ |
2237 |
|
2238 |
static SV * |
2239 |
coro_waitarray_new (pTHX_ int count) |
2240 |
{ |
2241 |
/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
2242 |
AV *av = newAV (); |
2243 |
SV **ary; |
2244 |
|
2245 |
/* unfortunately, building manually saves memory */ |
2246 |
Newx (ary, 2, SV *); |
2247 |
AvALLOC (av) = ary; |
2248 |
/*AvARRAY (av) = ary;*/ |
2249 |
SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ |
2250 |
AvMAX (av) = 1; |
2251 |
AvFILLp (av) = 0; |
2252 |
ary [0] = newSViv (count); |
2253 |
|
2254 |
return newRV_noinc ((SV *)av); |
2255 |
} |
2256 |
|
2257 |
/* semaphore */ |
2258 |
|
2259 |
static void |
2260 |
coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
2261 |
{ |
2262 |
SV *count_sv = AvARRAY (av)[0]; |
2263 |
IV count = SvIVX (count_sv); |
2264 |
|
2265 |
count += adjust; |
2266 |
SvIVX (count_sv) = count; |
2267 |
|
2268 |
/* now wake up as many waiters as are expected to lock */ |
2269 |
while (count > 0 && AvFILLp (av) > 0) |
2270 |
{ |
2271 |
SV *cb; |
2272 |
|
2273 |
/* swap first two elements so we can shift a waiter */ |
2274 |
AvARRAY (av)[0] = AvARRAY (av)[1]; |
2275 |
AvARRAY (av)[1] = count_sv; |
2276 |
cb = av_shift (av); |
2277 |
|
2278 |
if (SvOBJECT (cb)) |
2279 |
{ |
2280 |
api_ready (aTHX_ cb); |
2281 |
--count; |
2282 |
} |
2283 |
else if (SvTYPE (cb) == SVt_PVCV) |
2284 |
{ |
2285 |
dSP; |
2286 |
PUSHMARK (SP); |
2287 |
XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
2288 |
PUTBACK; |
2289 |
call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
2290 |
} |
2291 |
|
2292 |
SvREFCNT_dec (cb); |
2293 |
} |
2294 |
} |
2295 |
|
2296 |
static void |
2297 |
coro_semaphore_on_destroy (pTHX_ struct coro *coro) |
2298 |
{ |
2299 |
/* call $sem->adjust (0) to possibly wake up some other waiters */ |
2300 |
coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); |
2301 |
} |
2302 |
|
2303 |
static int |
2304 |
slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) |
2305 |
{ |
2306 |
AV *av = (AV *)frame->data; |
2307 |
SV *count_sv = AvARRAY (av)[0]; |
2308 |
|
2309 |
/* if we are about to throw, don't actually acquire the lock, just throw */ |
2310 |
if (CORO_THROW) |
2311 |
return 0; |
2312 |
else if (SvIVX (count_sv) > 0) |
2313 |
{ |
2314 |
SvSTATE_current->on_destroy = 0; |
2315 |
|
2316 |
if (acquire) |
2317 |
SvIVX (count_sv) = SvIVX (count_sv) - 1; |
2318 |
else |
2319 |
coro_semaphore_adjust (aTHX_ av, 0); |
2320 |
|
2321 |
return 0; |
2322 |
} |
2323 |
else |
2324 |
{ |
2325 |
int i; |
2326 |
/* if we were woken up but can't down, we look through the whole */ |
2327 |
/* waiters list and only add us if we aren't in there already */ |
2328 |
/* this avoids some degenerate memory usage cases */ |
2329 |
|
2330 |
for (i = 1; i <= AvFILLp (av); ++i) |
2331 |
if (AvARRAY (av)[i] == SvRV (coro_current)) |
2332 |
return 1; |
2333 |
|
2334 |
av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
2335 |
return 1; |
2336 |
} |
2337 |
} |
2338 |
|
2339 |
static int |
2340 |
slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
2341 |
{ |
2342 |
return slf_check_semaphore_down_or_wait (aTHX_ frame, 1); |
2343 |
} |
2344 |
|
2345 |
static int |
2346 |
slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame) |
2347 |
{ |
2348 |
return slf_check_semaphore_down_or_wait (aTHX_ frame, 0); |
2349 |
} |
2350 |
|
2351 |
static void |
2352 |
slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2353 |
{ |
2354 |
AV *av = (AV *)SvRV (arg [0]); |
2355 |
|
2356 |
if (SvIVX (AvARRAY (av)[0]) > 0) |
2357 |
{ |
2358 |
frame->data = (void *)av; |
2359 |
frame->prepare = prepare_nop; |
2360 |
} |
2361 |
else |
2362 |
{ |
2363 |
av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
2364 |
|
2365 |
frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
2366 |
frame->prepare = prepare_schedule; |
2367 |
|
2368 |
/* to avoid race conditions when a woken-up coro gets terminated */ |
2369 |
/* we arrange for a temporary on_destroy that calls adjust (0) */ |
2370 |
SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
2371 |
} |
2372 |
} |
2373 |
|
2374 |
static void |
2375 |
slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2376 |
{ |
2377 |
slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
2378 |
frame->check = slf_check_semaphore_down; |
2379 |
} |
2380 |
|
2381 |
static void |
2382 |
slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2383 |
{ |
2384 |
if (items >= 2) |
2385 |
{ |
2386 |
/* callback form */ |
2387 |
AV *av = (AV *)SvRV (arg [0]); |
2388 |
CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]); |
2389 |
|
2390 |
av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); |
2391 |
|
2392 |
if (SvIVX (AvARRAY (av)[0]) > 0) |
2393 |
coro_semaphore_adjust (aTHX_ av, 0); |
2394 |
|
2395 |
frame->prepare = prepare_nop; |
2396 |
frame->check = slf_check_nop; |
2397 |
} |
2398 |
else |
2399 |
{ |
2400 |
slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
2401 |
frame->check = slf_check_semaphore_wait; |
2402 |
} |
2403 |
} |
2404 |
|
2405 |
/* signal */ |
2406 |
|
2407 |
static void |
2408 |
coro_signal_wake (pTHX_ AV *av, int count) |
2409 |
{ |
2410 |
SvIVX (AvARRAY (av)[0]) = 0; |
2411 |
|
2412 |
/* now signal count waiters */ |
2413 |
while (count > 0 && AvFILLp (av) > 0) |
2414 |
{ |
2415 |
SV *cb; |
2416 |
|
2417 |
/* swap first two elements so we can shift a waiter */ |
2418 |
cb = AvARRAY (av)[0]; |
2419 |
AvARRAY (av)[0] = AvARRAY (av)[1]; |
2420 |
AvARRAY (av)[1] = cb; |
2421 |
|
2422 |
cb = av_shift (av); |
2423 |
|
2424 |
api_ready (aTHX_ cb); |
2425 |
sv_setiv (cb, 0); /* signal waiter */ |
2426 |
SvREFCNT_dec (cb); |
2427 |
|
2428 |
--count; |
2429 |
} |
2430 |
} |
2431 |
|
2432 |
static int |
2433 |
slf_check_signal_wait (pTHX_ struct CoroSLF *frame) |
2434 |
{ |
2435 |
/* if we are about to throw, also stop waiting */ |
2436 |
return SvROK ((SV *)frame->data) && !CORO_THROW; |
2437 |
} |
2438 |
|
2439 |
static void |
2440 |
slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2441 |
{ |
2442 |
AV *av = (AV *)SvRV (arg [0]); |
2443 |
|
2444 |
if (SvIVX (AvARRAY (av)[0])) |
2445 |
{ |
2446 |
SvIVX (AvARRAY (av)[0]) = 0; |
2447 |
frame->prepare = prepare_nop; |
2448 |
frame->check = slf_check_nop; |
2449 |
} |
2450 |
else |
2451 |
{ |
2452 |
SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ |
2453 |
|
2454 |
av_push (av, waiter); |
2455 |
|
2456 |
frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ |
2457 |
frame->prepare = prepare_schedule; |
2458 |
frame->check = slf_check_signal_wait; |
2459 |
} |
2460 |
} |
2461 |
|
2462 |
/*****************************************************************************/ |
2463 |
/* Coro::AIO */ |
2464 |
|
2465 |
#define CORO_MAGIC_type_aio PERL_MAGIC_ext |
2466 |
|
2467 |
/* helper storage struct */ |
2468 |
struct io_state |
2469 |
{ |
2470 |
int errorno; |
2471 |
I32 laststype; /* U16 in 5.10.0 */ |
2472 |
int laststatval; |
2473 |
Stat_t statcache; |
2474 |
}; |
2475 |
|
2476 |
static void |
2477 |
coro_aio_callback (pTHX_ CV *cv) |
2478 |
{ |
2479 |
dXSARGS; |
2480 |
AV *state = (AV *)GENSUB_ARG; |
2481 |
SV *coro = av_pop (state); |
2482 |
SV *data_sv = newSV (sizeof (struct io_state)); |
2483 |
|
2484 |
av_extend (state, items - 1); |
2485 |
|
2486 |
sv_upgrade (data_sv, SVt_PV); |
2487 |
SvCUR_set (data_sv, sizeof (struct io_state)); |
2488 |
SvPOK_only (data_sv); |
2489 |
|
2490 |
{ |
2491 |
struct io_state *data = (struct io_state *)SvPVX (data_sv); |
2492 |
|
2493 |
data->errorno = errno; |
2494 |
data->laststype = PL_laststype; |
2495 |
data->laststatval = PL_laststatval; |
2496 |
data->statcache = PL_statcache; |
2497 |
} |
2498 |
|
2499 |
/* now build the result vector out of all the parameters and the data_sv */ |
2500 |
{ |
2501 |
int i; |
2502 |
|
2503 |
for (i = 0; i < items; ++i) |
2504 |
av_push (state, SvREFCNT_inc_NN (ST (i))); |
2505 |
} |
2506 |
|
2507 |
av_push (state, data_sv); |
2508 |
|
2509 |
api_ready (aTHX_ coro); |
2510 |
SvREFCNT_dec (coro); |
2511 |
SvREFCNT_dec ((AV *)state); |
2512 |
} |
2513 |
|
2514 |
static int |
2515 |
slf_check_aio_req (pTHX_ struct CoroSLF *frame) |
2516 |
{ |
2517 |
AV *state = (AV *)frame->data; |
2518 |
|
2519 |
/* if we are about to throw, return early */ |
2520 |
/* this does not cancel the aio request, but at least */ |
2521 |
/* it quickly returns */ |
2522 |
if (CORO_THROW) |
2523 |
return 0; |
2524 |
|
2525 |
/* one element that is an RV? repeat! */ |
2526 |
if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) |
2527 |
return 1; |
2528 |
|
2529 |
/* restore status */ |
2530 |
{ |
2531 |
SV *data_sv = av_pop (state); |
2532 |
struct io_state *data = (struct io_state *)SvPVX (data_sv); |
2533 |
|
2534 |
errno = data->errorno; |
2535 |
PL_laststype = data->laststype; |
2536 |
PL_laststatval = data->laststatval; |
2537 |
PL_statcache = data->statcache; |
2538 |
|
2539 |
SvREFCNT_dec (data_sv); |
2540 |
} |
2541 |
|
2542 |
/* push result values */ |
2543 |
{ |
2544 |
dSP; |
2545 |
int i; |
2546 |
|
2547 |
EXTEND (SP, AvFILLp (state) + 1); |
2548 |
for (i = 0; i <= AvFILLp (state); ++i) |
2549 |
PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i]))); |
2550 |
|
2551 |
PUTBACK; |
2552 |
} |
2553 |
|
2554 |
return 0; |
2555 |
} |
2556 |
|
2557 |
static void |
2558 |
slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2559 |
{ |
2560 |
AV *state = (AV *)sv_2mortal ((SV *)newAV ()); |
2561 |
SV *coro_hv = SvRV (coro_current); |
2562 |
struct coro *coro = SvSTATE_hv (coro_hv); |
2563 |
|
2564 |
/* put our coroutine id on the state arg */ |
2565 |
av_push (state, SvREFCNT_inc_NN (coro_hv)); |
2566 |
|
2567 |
/* first see whether we have a non-zero priority and set it as AIO prio */ |
2568 |
if (coro->prio) |
2569 |
{ |
2570 |
dSP; |
2571 |
|
2572 |
static SV *prio_cv; |
2573 |
static SV *prio_sv; |
2574 |
|
2575 |
if (expect_false (!prio_cv)) |
2576 |
{ |
2577 |
prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); |
2578 |
prio_sv = newSViv (0); |
2579 |
} |
2580 |
|
2581 |
PUSHMARK (SP); |
2582 |
sv_setiv (prio_sv, coro->prio); |
2583 |
XPUSHs (prio_sv); |
2584 |
|
2585 |
PUTBACK; |
2586 |
call_sv (prio_cv, G_VOID | G_DISCARD); |
2587 |
} |
2588 |
|
2589 |
/* now call the original request */ |
2590 |
{ |
2591 |
dSP; |
2592 |
CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj; |
2593 |
int i; |
2594 |
|
2595 |
PUSHMARK (SP); |
2596 |
|
2597 |
/* first push all args to the stack */ |
2598 |
EXTEND (SP, items + 1); |
2599 |
|
2600 |
for (i = 0; i < items; ++i) |
2601 |
PUSHs (arg [i]); |
2602 |
|
2603 |
/* now push the callback closure */ |
2604 |
PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); |
2605 |
|
2606 |
/* now call the AIO function - we assume our request is uncancelable */ |
2607 |
PUTBACK; |
2608 |
call_sv ((SV *)req, G_VOID | G_DISCARD); |
2609 |
} |
2610 |
|
2611 |
/* now that the requets is going, we loop toll we have a result */ |
2612 |
frame->data = (void *)state; |
2613 |
frame->prepare = prepare_schedule; |
2614 |
frame->check = slf_check_aio_req; |
2615 |
} |
2616 |
|
2617 |
static void |
2618 |
coro_aio_req_xs (pTHX_ CV *cv) |
2619 |
{ |
2620 |
dXSARGS; |
2621 |
|
2622 |
CORO_EXECUTE_SLF_XS (slf_init_aio_req); |
2623 |
|
2624 |
XSRETURN_EMPTY; |
2625 |
} |
2626 |
|
2627 |
/*****************************************************************************/ |
2628 |
|
2629 |
MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
2630 |
|
2631 |
PROTOTYPES: DISABLE |
2632 |
|
2633 |
BOOT: |
2634 |
{ |
2635 |
#ifdef USE_ITHREADS |
2636 |
# if CORO_PTHREAD |
2637 |
coro_thx = PERL_GET_CONTEXT; |
2638 |
# endif |
2639 |
#endif |
2640 |
BOOT_PAGESIZE; |
2641 |
|
2642 |
irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
2643 |
stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
2644 |
|
2645 |
orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
2646 |
orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
2647 |
orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
2648 |
|
2649 |
hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
2650 |
rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
2651 |
rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
2652 |
|
2653 |
coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
2654 |
|
2655 |
newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
2656 |
newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
2657 |
newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
2658 |
newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
2659 |
|
2660 |
main_mainstack = PL_mainstack; |
2661 |
main_top_env = PL_top_env; |
2662 |
|
2663 |
while (main_top_env->je_prev) |
2664 |
main_top_env = main_top_env->je_prev; |
2665 |
|
2666 |
{ |
2667 |
SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); |
2668 |
|
2669 |
if (!PL_custom_op_names) PL_custom_op_names = newHV (); |
2670 |
hv_store_ent (PL_custom_op_names, slf, |
2671 |
newSVpv ("coro_slf", 0), 0); |
2672 |
|
2673 |
if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); |
2674 |
hv_store_ent (PL_custom_op_descs, slf, |
2675 |
newSVpv ("coro schedule like function", 0), 0); |
2676 |
} |
2677 |
|
2678 |
coroapi.ver = CORO_API_VERSION; |
2679 |
coroapi.rev = CORO_API_REVISION; |
2680 |
|
2681 |
coroapi.transfer = api_transfer; |
2682 |
|
2683 |
coroapi.sv_state = SvSTATE_; |
2684 |
coroapi.execute_slf = api_execute_slf; |
2685 |
coroapi.prepare_nop = prepare_nop; |
2686 |
coroapi.prepare_schedule = prepare_schedule; |
2687 |
coroapi.prepare_cede = prepare_cede; |
2688 |
coroapi.prepare_cede_notself = prepare_cede_notself; |
2689 |
|
2690 |
{ |
2691 |
SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
2692 |
|
2693 |
if (!svp) croak ("Time::HiRes is required"); |
2694 |
if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); |
2695 |
|
2696 |
nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
2697 |
} |
2698 |
|
2699 |
assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
2700 |
} |
2701 |
|
2702 |
SV * |
2703 |
new (char *klass, ...) |
2704 |
ALIAS: |
2705 |
Coro::new = 1 |
2706 |
CODE: |
2707 |
{ |
2708 |
struct coro *coro; |
2709 |
MAGIC *mg; |
2710 |
HV *hv; |
2711 |
CV *cb; |
2712 |
int i; |
2713 |
|
2714 |
if (items > 1) |
2715 |
{ |
2716 |
cb = coro_sv_2cv (aTHX_ ST (1)); |
2717 |
|
2718 |
if (!ix) |
2719 |
{ |
2720 |
if (CvISXSUB (cb)) |
2721 |
croak ("Coro::State doesn't support XS functions as coroutine start, caught"); |
2722 |
|
2723 |
if (!CvROOT (cb)) |
2724 |
croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught"); |
2725 |
} |
2726 |
} |
2727 |
|
2728 |
Newz (0, coro, 1, struct coro); |
2729 |
coro->args = newAV (); |
2730 |
coro->flags = CF_NEW; |
2731 |
|
2732 |
if (coro_first) coro_first->prev = coro; |
2733 |
coro->next = coro_first; |
2734 |
coro_first = coro; |
2735 |
|
2736 |
coro->hv = hv = newHV (); |
2737 |
mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
2738 |
mg->mg_flags |= MGf_DUP; |
2739 |
RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
2740 |
|
2741 |
if (items > 1) |
2742 |
{ |
2743 |
av_extend (coro->args, items - 1 + ix - 1); |
2744 |
|
2745 |
if (ix) |
2746 |
{ |
2747 |
av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb)); |
2748 |
cb = cv_coro_run; |
2749 |
} |
2750 |
|
2751 |
coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb); |
2752 |
|
2753 |
for (i = 2; i < items; i++) |
2754 |
av_push (coro->args, newSVsv (ST (i))); |
2755 |
} |
2756 |
} |
2757 |
OUTPUT: |
2758 |
RETVAL |
2759 |
|
2760 |
void |
2761 |
transfer (...) |
2762 |
PROTOTYPE: $$ |
2763 |
CODE: |
2764 |
CORO_EXECUTE_SLF_XS (slf_init_transfer); |
2765 |
|
2766 |
bool |
2767 |
_destroy (SV *coro_sv) |
2768 |
CODE: |
2769 |
RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
2770 |
OUTPUT: |
2771 |
RETVAL |
2772 |
|
2773 |
void |
2774 |
_exit (int code) |
2775 |
PROTOTYPE: $ |
2776 |
CODE: |
2777 |
_exit (code); |
2778 |
|
2779 |
int |
2780 |
cctx_stacksize (int new_stacksize = 0) |
2781 |
PROTOTYPE: ;$ |
2782 |
CODE: |
2783 |
RETVAL = cctx_stacksize; |
2784 |
if (new_stacksize) |
2785 |
{ |
2786 |
cctx_stacksize = new_stacksize; |
2787 |
++cctx_gen; |
2788 |
} |
2789 |
OUTPUT: |
2790 |
RETVAL |
2791 |
|
2792 |
int |
2793 |
cctx_max_idle (int max_idle = 0) |
2794 |
PROTOTYPE: ;$ |
2795 |
CODE: |
2796 |
RETVAL = cctx_max_idle; |
2797 |
if (max_idle > 1) |
2798 |
cctx_max_idle = max_idle; |
2799 |
OUTPUT: |
2800 |
RETVAL |
2801 |
|
2802 |
int |
2803 |
cctx_count () |
2804 |
PROTOTYPE: |
2805 |
CODE: |
2806 |
RETVAL = cctx_count; |
2807 |
OUTPUT: |
2808 |
RETVAL |
2809 |
|
2810 |
int |
2811 |
cctx_idle () |
2812 |
PROTOTYPE: |
2813 |
CODE: |
2814 |
RETVAL = cctx_idle; |
2815 |
OUTPUT: |
2816 |
RETVAL |
2817 |
|
2818 |
void |
2819 |
list () |
2820 |
PROTOTYPE: |
2821 |
PPCODE: |
2822 |
{ |
2823 |
struct coro *coro; |
2824 |
for (coro = coro_first; coro; coro = coro->next) |
2825 |
if (coro->hv) |
2826 |
XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
2827 |
} |
2828 |
|
2829 |
void |
2830 |
call (Coro::State coro, SV *coderef) |
2831 |
ALIAS: |
2832 |
eval = 1 |
2833 |
CODE: |
2834 |
{ |
2835 |
if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
2836 |
{ |
2837 |
struct coro temp; |
2838 |
|
2839 |
if (!(coro->flags & CF_RUNNING)) |
2840 |
{ |
2841 |
PUTBACK; |
2842 |
save_perl (aTHX_ &temp); |
2843 |
load_perl (aTHX_ coro); |
2844 |
} |
2845 |
|
2846 |
{ |
2847 |
dSP; |
2848 |
ENTER; |
2849 |
SAVETMPS; |
2850 |
PUTBACK; |
2851 |
PUSHSTACK; |
2852 |
PUSHMARK (SP); |
2853 |
|
2854 |
if (ix) |
2855 |
eval_sv (coderef, 0); |
2856 |
else |
2857 |
call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
2858 |
|
2859 |
POPSTACK; |
2860 |
SPAGAIN; |
2861 |
FREETMPS; |
2862 |
LEAVE; |
2863 |
PUTBACK; |
2864 |
} |
2865 |
|
2866 |
if (!(coro->flags & CF_RUNNING)) |
2867 |
{ |
2868 |
save_perl (aTHX_ coro); |
2869 |
load_perl (aTHX_ &temp); |
2870 |
SPAGAIN; |
2871 |
} |
2872 |
} |
2873 |
} |
2874 |
|
2875 |
SV * |
2876 |
is_ready (Coro::State coro) |
2877 |
PROTOTYPE: $ |
2878 |
ALIAS: |
2879 |
is_ready = CF_READY |
2880 |
is_running = CF_RUNNING |
2881 |
is_new = CF_NEW |
2882 |
is_destroyed = CF_DESTROYED |
2883 |
CODE: |
2884 |
RETVAL = boolSV (coro->flags & ix); |
2885 |
OUTPUT: |
2886 |
RETVAL |
2887 |
|
2888 |
void |
2889 |
throw (Coro::State self, SV *throw = &PL_sv_undef) |
2890 |
PROTOTYPE: $;$ |
2891 |
CODE: |
2892 |
{ |
2893 |
struct coro *current = SvSTATE_current; |
2894 |
SV **throwp = self == current ? &CORO_THROW : &self->except; |
2895 |
SvREFCNT_dec (*throwp); |
2896 |
*throwp = SvOK (throw) ? newSVsv (throw) : 0; |
2897 |
} |
2898 |
|
2899 |
void |
2900 |
api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
2901 |
PROTOTYPE: $;$ |
2902 |
C_ARGS: aTHX_ coro, flags |
2903 |
|
2904 |
SV * |
2905 |
has_cctx (Coro::State coro) |
2906 |
PROTOTYPE: $ |
2907 |
CODE: |
2908 |
RETVAL = boolSV (!!coro->cctx); |
2909 |
OUTPUT: |
2910 |
RETVAL |
2911 |
|
2912 |
int |
2913 |
is_traced (Coro::State coro) |
2914 |
PROTOTYPE: $ |
2915 |
CODE: |
2916 |
RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
2917 |
OUTPUT: |
2918 |
RETVAL |
2919 |
|
2920 |
UV |
2921 |
rss (Coro::State coro) |
2922 |
PROTOTYPE: $ |
2923 |
ALIAS: |
2924 |
usecount = 1 |
2925 |
CODE: |
2926 |
switch (ix) |
2927 |
{ |
2928 |
case 0: RETVAL = coro_rss (aTHX_ coro); break; |
2929 |
case 1: RETVAL = coro->usecount; break; |
2930 |
} |
2931 |
OUTPUT: |
2932 |
RETVAL |
2933 |
|
2934 |
void |
2935 |
force_cctx () |
2936 |
PROTOTYPE: |
2937 |
CODE: |
2938 |
SvSTATE_current->cctx->idle_sp = 0; |
2939 |
|
2940 |
void |
2941 |
swap_defsv (Coro::State self) |
2942 |
PROTOTYPE: $ |
2943 |
ALIAS: |
2944 |
swap_defav = 1 |
2945 |
CODE: |
2946 |
if (!self->slot) |
2947 |
croak ("cannot swap state with coroutine that has no saved state,"); |
2948 |
else |
2949 |
{ |
2950 |
SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
2951 |
SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
2952 |
|
2953 |
SV *tmp = *src; *src = *dst; *dst = tmp; |
2954 |
} |
2955 |
|
2956 |
|
2957 |
MODULE = Coro::State PACKAGE = Coro |
2958 |
|
2959 |
BOOT: |
2960 |
{ |
2961 |
int i; |
2962 |
|
2963 |
av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
2964 |
sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
2965 |
sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
2966 |
cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD); |
2967 |
cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD); |
2968 |
coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); |
2969 |
|
2970 |
sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); |
2971 |
sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); |
2972 |
cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); |
2973 |
cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new); |
2974 |
|
2975 |
coro_stash = gv_stashpv ("Coro", TRUE); |
2976 |
|
2977 |
newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
2978 |
newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
2979 |
newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
2980 |
newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
2981 |
newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
2982 |
newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
2983 |
|
2984 |
for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
2985 |
coro_ready[i] = newAV (); |
2986 |
|
2987 |
{ |
2988 |
SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
2989 |
|
2990 |
coroapi.schedule = api_schedule; |
2991 |
coroapi.cede = api_cede; |
2992 |
coroapi.cede_notself = api_cede_notself; |
2993 |
coroapi.ready = api_ready; |
2994 |
coroapi.is_ready = api_is_ready; |
2995 |
coroapi.nready = coro_nready; |
2996 |
coroapi.current = coro_current; |
2997 |
|
2998 |
/*GCoroAPI = &coroapi;*/ |
2999 |
sv_setiv (sv, (IV)&coroapi); |
3000 |
SvREADONLY_on (sv); |
3001 |
} |
3002 |
} |
3003 |
|
3004 |
void |
3005 |
schedule (...) |
3006 |
CODE: |
3007 |
CORO_EXECUTE_SLF_XS (slf_init_schedule); |
3008 |
|
3009 |
void |
3010 |
cede (...) |
3011 |
CODE: |
3012 |
CORO_EXECUTE_SLF_XS (slf_init_cede); |
3013 |
|
3014 |
void |
3015 |
cede_notself (...) |
3016 |
CODE: |
3017 |
CORO_EXECUTE_SLF_XS (slf_init_cede_notself); |
3018 |
|
3019 |
void |
3020 |
_set_current (SV *current) |
3021 |
PROTOTYPE: $ |
3022 |
CODE: |
3023 |
SvREFCNT_dec (SvRV (coro_current)); |
3024 |
SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
3025 |
|
3026 |
void |
3027 |
_set_readyhook (SV *hook) |
3028 |
PROTOTYPE: $ |
3029 |
CODE: |
3030 |
SvREFCNT_dec (coro_readyhook); |
3031 |
coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; |
3032 |
|
3033 |
int |
3034 |
prio (Coro::State coro, int newprio = 0) |
3035 |
PROTOTYPE: $;$ |
3036 |
ALIAS: |
3037 |
nice = 1 |
3038 |
CODE: |
3039 |
{ |
3040 |
RETVAL = coro->prio; |
3041 |
|
3042 |
if (items > 1) |
3043 |
{ |
3044 |
if (ix) |
3045 |
newprio = coro->prio - newprio; |
3046 |
|
3047 |
if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
3048 |
if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
3049 |
|
3050 |
coro->prio = newprio; |
3051 |
} |
3052 |
} |
3053 |
OUTPUT: |
3054 |
RETVAL |
3055 |
|
3056 |
SV * |
3057 |
ready (SV *self) |
3058 |
PROTOTYPE: $ |
3059 |
CODE: |
3060 |
RETVAL = boolSV (api_ready (aTHX_ self)); |
3061 |
OUTPUT: |
3062 |
RETVAL |
3063 |
|
3064 |
int |
3065 |
nready (...) |
3066 |
PROTOTYPE: |
3067 |
CODE: |
3068 |
RETVAL = coro_nready; |
3069 |
OUTPUT: |
3070 |
RETVAL |
3071 |
|
3072 |
void |
3073 |
_pool_handler (...) |
3074 |
CODE: |
3075 |
CORO_EXECUTE_SLF_XS (slf_init_pool_handler); |
3076 |
|
3077 |
void |
3078 |
async_pool (SV *cv, ...) |
3079 |
PROTOTYPE: &@ |
3080 |
PPCODE: |
3081 |
{ |
3082 |
HV *hv = (HV *)av_pop (av_async_pool); |
3083 |
AV *av = newAV (); |
3084 |
SV *cb = ST (0); |
3085 |
int i; |
3086 |
|
3087 |
av_extend (av, items - 2); |
3088 |
for (i = 1; i < items; ++i) |
3089 |
av_push (av, SvREFCNT_inc_NN (ST (i))); |
3090 |
|
3091 |
if ((SV *)hv == &PL_sv_undef) |
3092 |
{ |
3093 |
PUSHMARK (SP); |
3094 |
EXTEND (SP, 2); |
3095 |
PUSHs (sv_Coro); |
3096 |
PUSHs ((SV *)cv_pool_handler); |
3097 |
PUTBACK; |
3098 |
call_sv ((SV *)cv_coro_state_new, G_SCALAR); |
3099 |
SPAGAIN; |
3100 |
|
3101 |
hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs)); |
3102 |
} |
3103 |
|
3104 |
{ |
3105 |
struct coro *coro = SvSTATE_hv (hv); |
3106 |
|
3107 |
assert (!coro->invoke_cb); |
3108 |
assert (!coro->invoke_av); |
3109 |
coro->invoke_cb = SvREFCNT_inc (cb); |
3110 |
coro->invoke_av = av; |
3111 |
} |
3112 |
|
3113 |
api_ready (aTHX_ (SV *)hv); |
3114 |
|
3115 |
if (GIMME_V != G_VOID) |
3116 |
XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); |
3117 |
else |
3118 |
SvREFCNT_dec (hv); |
3119 |
} |
3120 |
|
3121 |
SV * |
3122 |
rouse_cb () |
3123 |
PROTOTYPE: |
3124 |
CODE: |
3125 |
RETVAL = coro_new_rouse_cb (aTHX); |
3126 |
OUTPUT: |
3127 |
RETVAL |
3128 |
|
3129 |
void |
3130 |
rouse_wait (...) |
3131 |
PROTOTYPE: ;$ |
3132 |
PPCODE: |
3133 |
CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); |
3134 |
|
3135 |
|
3136 |
MODULE = Coro::State PACKAGE = PerlIO::cede |
3137 |
|
3138 |
BOOT: |
3139 |
PerlIO_define_layer (aTHX_ &PerlIO_cede); |
3140 |
|
3141 |
|
3142 |
MODULE = Coro::State PACKAGE = Coro::Semaphore |
3143 |
|
3144 |
SV * |
3145 |
new (SV *klass, SV *count = 0) |
3146 |
CODE: |
3147 |
RETVAL = sv_bless ( |
3148 |
coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), |
3149 |
GvSTASH (CvGV (cv)) |
3150 |
); |
3151 |
OUTPUT: |
3152 |
RETVAL |
3153 |
|
3154 |
# helper for Coro::Channel |
3155 |
SV * |
3156 |
_alloc (int count) |
3157 |
CODE: |
3158 |
RETVAL = coro_waitarray_new (aTHX_ count); |
3159 |
OUTPUT: |
3160 |
RETVAL |
3161 |
|
3162 |
SV * |
3163 |
count (SV *self) |
3164 |
CODE: |
3165 |
RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); |
3166 |
OUTPUT: |
3167 |
RETVAL |
3168 |
|
3169 |
void |
3170 |
up (SV *self, int adjust = 1) |
3171 |
ALIAS: |
3172 |
adjust = 1 |
3173 |
CODE: |
3174 |
coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); |
3175 |
|
3176 |
void |
3177 |
down (...) |
3178 |
CODE: |
3179 |
CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); |
3180 |
|
3181 |
void |
3182 |
wait (...) |
3183 |
CODE: |
3184 |
CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); |
3185 |
|
3186 |
void |
3187 |
try (SV *self) |
3188 |
PPCODE: |
3189 |
{ |
3190 |
AV *av = (AV *)SvRV (self); |
3191 |
SV *count_sv = AvARRAY (av)[0]; |
3192 |
IV count = SvIVX (count_sv); |
3193 |
|
3194 |
if (count > 0) |
3195 |
{ |
3196 |
--count; |
3197 |
SvIVX (count_sv) = count; |
3198 |
XSRETURN_YES; |
3199 |
} |
3200 |
else |
3201 |
XSRETURN_NO; |
3202 |
} |
3203 |
|
3204 |
void |
3205 |
waiters (SV *self) |
3206 |
PPCODE: |
3207 |
{ |
3208 |
AV *av = (AV *)SvRV (self); |
3209 |
int wcount = AvFILLp (av) + 1 - 1; |
3210 |
|
3211 |
if (GIMME_V == G_SCALAR) |
3212 |
XPUSHs (sv_2mortal (newSViv (wcount))); |
3213 |
else |
3214 |
{ |
3215 |
int i; |
3216 |
EXTEND (SP, wcount); |
3217 |
for (i = 1; i <= wcount; ++i) |
3218 |
PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); |
3219 |
} |
3220 |
} |
3221 |
|
3222 |
MODULE = Coro::State PACKAGE = Coro::Signal |
3223 |
|
3224 |
SV * |
3225 |
new (SV *klass) |
3226 |
CODE: |
3227 |
RETVAL = sv_bless ( |
3228 |
coro_waitarray_new (aTHX_ 0), |
3229 |
GvSTASH (CvGV (cv)) |
3230 |
); |
3231 |
OUTPUT: |
3232 |
RETVAL |
3233 |
|
3234 |
void |
3235 |
wait (...) |
3236 |
CODE: |
3237 |
CORO_EXECUTE_SLF_XS (slf_init_signal_wait); |
3238 |
|
3239 |
void |
3240 |
broadcast (SV *self) |
3241 |
CODE: |
3242 |
{ |
3243 |
AV *av = (AV *)SvRV (self); |
3244 |
coro_signal_wake (aTHX_ av, AvFILLp (av)); |
3245 |
} |
3246 |
|
3247 |
void |
3248 |
send (SV *self) |
3249 |
CODE: |
3250 |
{ |
3251 |
AV *av = (AV *)SvRV (self); |
3252 |
|
3253 |
if (AvFILLp (av)) |
3254 |
coro_signal_wake (aTHX_ av, 1); |
3255 |
else |
3256 |
SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ |
3257 |
} |
3258 |
|
3259 |
IV |
3260 |
awaited (SV *self) |
3261 |
CODE: |
3262 |
RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; |
3263 |
OUTPUT: |
3264 |
RETVAL |
3265 |
|
3266 |
|
3267 |
MODULE = Coro::State PACKAGE = Coro::AnyEvent |
3268 |
|
3269 |
BOOT: |
3270 |
sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
3271 |
|
3272 |
void |
3273 |
_schedule (...) |
3274 |
CODE: |
3275 |
{ |
3276 |
static int incede; |
3277 |
|
3278 |
api_cede_notself (aTHX); |
3279 |
|
3280 |
++incede; |
3281 |
while (coro_nready >= incede && api_cede (aTHX)) |
3282 |
; |
3283 |
|
3284 |
sv_setsv (sv_activity, &PL_sv_undef); |
3285 |
if (coro_nready >= incede) |
3286 |
{ |
3287 |
PUSHMARK (SP); |
3288 |
PUTBACK; |
3289 |
call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
3290 |
} |
3291 |
|
3292 |
--incede; |
3293 |
} |
3294 |
|
3295 |
|
3296 |
MODULE = Coro::State PACKAGE = Coro::AIO |
3297 |
|
3298 |
void |
3299 |
_register (char *target, char *proto, SV *req) |
3300 |
CODE: |
3301 |
{ |
3302 |
CV *req_cv = coro_sv_2cv (aTHX_ req); |
3303 |
/* newXSproto doesn't return the CV on 5.8 */ |
3304 |
CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); |
3305 |
sv_setpv ((SV *)slf_cv, proto); |
3306 |
sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); |
3307 |
} |
3308 |
|