1 |
/* this works around a bug in mingw32 providing a non-working setjmp */ |
2 |
#define USE_NO_MINGW_SETJMP_TWO_ARGS |
3 |
|
4 |
#define NDEBUG 1 |
5 |
|
6 |
#include "libcoro/coro.c" |
7 |
|
8 |
#define PERL_NO_GET_CONTEXT |
9 |
#define PERL_EXT |
10 |
|
11 |
#include "EXTERN.h" |
12 |
#include "perl.h" |
13 |
#include "XSUB.h" |
14 |
#include "perliol.h" |
15 |
|
16 |
#include "schmorp.h" |
17 |
|
18 |
#include <stdio.h> |
19 |
#include <errno.h> |
20 |
#include <assert.h> |
21 |
|
22 |
#ifndef SVs_PADSTALE |
23 |
# define SVs_PADSTALE 0 |
24 |
#endif |
25 |
|
26 |
#if defined(_WIN32) |
27 |
# undef HAS_GETTIMEOFDAY |
28 |
# undef setjmp |
29 |
# undef longjmp |
30 |
# undef _exit |
31 |
# define setjmp _setjmp /* deep magic */ |
32 |
#else |
33 |
# include <inttypes.h> /* most portable stdint.h */ |
34 |
#endif |
35 |
|
36 |
#ifdef HAVE_MMAP |
37 |
# include <unistd.h> |
38 |
# include <sys/mman.h> |
39 |
# ifndef MAP_ANONYMOUS |
40 |
# ifdef MAP_ANON |
41 |
# define MAP_ANONYMOUS MAP_ANON |
42 |
# else |
43 |
# undef HAVE_MMAP |
44 |
# endif |
45 |
# endif |
46 |
# include <limits.h> |
47 |
# ifndef PAGESIZE |
48 |
# define PAGESIZE pagesize |
49 |
# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
50 |
static long pagesize; |
51 |
# else |
52 |
# define BOOT_PAGESIZE (void)0 |
53 |
# endif |
54 |
#else |
55 |
# define PAGESIZE 0 |
56 |
# define BOOT_PAGESIZE (void)0 |
57 |
#endif |
58 |
|
59 |
#if CORO_USE_VALGRIND |
60 |
# include <valgrind/valgrind.h> |
61 |
#endif |
62 |
|
63 |
/* the maximum number of idle cctx that will be pooled */ |
64 |
static int cctx_max_idle = 4; |
65 |
|
66 |
#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
67 |
# undef CORO_STACKGUARD |
68 |
#endif |
69 |
|
70 |
#ifndef CORO_STACKGUARD |
71 |
# define CORO_STACKGUARD 0 |
72 |
#endif |
73 |
|
74 |
/* prefer perl internal functions over our own? */ |
75 |
#ifndef CORO_PREFER_PERL_FUNCTIONS |
76 |
# define CORO_PREFER_PERL_FUNCTIONS 0 |
77 |
#endif |
78 |
|
79 |
/* The next macros try to return the current stack pointer, in an as |
80 |
* portable way as possible. */ |
81 |
#if __GNUC__ >= 4 |
82 |
# define dSTACKLEVEL int stacklevel_dummy |
83 |
# define STACKLEVEL __builtin_frame_address (0) |
84 |
#else |
85 |
# define dSTACKLEVEL volatile void *stacklevel |
86 |
# define STACKLEVEL ((void *)&stacklevel) |
87 |
#endif |
88 |
|
89 |
#define IN_DESTRUCT PL_dirty |
90 |
|
91 |
#if __GNUC__ >= 3 |
92 |
# define attribute(x) __attribute__(x) |
93 |
# define expect(expr,value) __builtin_expect ((expr), (value)) |
94 |
# define INLINE static inline |
95 |
#else |
96 |
# define attribute(x) |
97 |
# define expect(expr,value) (expr) |
98 |
# define INLINE static |
99 |
#endif |
100 |
|
101 |
#define expect_false(expr) expect ((expr) != 0, 0) |
102 |
#define expect_true(expr) expect ((expr) != 0, 1) |
103 |
|
104 |
#define NOINLINE attribute ((noinline)) |
105 |
|
106 |
#include "CoroAPI.h" |
107 |
#define GCoroAPI (&coroapi) /* very sneaky */ |
108 |
|
109 |
#ifdef USE_ITHREADS |
110 |
# if CORO_PTHREAD |
111 |
static void *coro_thx; |
112 |
# endif |
113 |
#endif |
114 |
|
115 |
#ifdef __linux |
116 |
# include <time.h> /* for timespec */ |
117 |
# include <syscall.h> /* for SYS_* */ |
118 |
# ifdef SYS_clock_gettime |
119 |
# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
120 |
# define CORO_CLOCK_MONOTONIC 1 |
121 |
# define CORO_CLOCK_THREAD_CPUTIME_ID 3 |
122 |
# endif |
123 |
#endif |
124 |
|
125 |
static double (*nvtime)(); /* so why doesn't it take void? */ |
126 |
static void (*u2time)(pTHX_ UV ret[2]); |
127 |
|
128 |
/* we hijack an hopefully unused CV flag for our purposes */ |
129 |
#define CVf_SLF 0x4000 |
130 |
static OP *pp_slf (pTHX); |
131 |
static void slf_destroy (pTHX_ struct coro *coro); |
132 |
|
133 |
static U32 cctx_gen; |
134 |
static size_t cctx_stacksize = CORO_STACKSIZE; |
135 |
static struct CoroAPI coroapi; |
136 |
static AV *main_mainstack; /* used to differentiate between $main and others */ |
137 |
static JMPENV *main_top_env; |
138 |
static HV *coro_state_stash, *coro_stash; |
139 |
static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
140 |
|
141 |
static AV *av_destroy; /* destruction queue */ |
142 |
static SV *sv_manager; /* the manager coro */ |
143 |
static SV *sv_idle; /* $Coro::idle */ |
144 |
|
145 |
static GV *irsgv; /* $/ */ |
146 |
static GV *stdoutgv; /* *STDOUT */ |
147 |
static SV *rv_diehook; |
148 |
static SV *rv_warnhook; |
149 |
static HV *hv_sig; /* %SIG */ |
150 |
|
151 |
/* async_pool helper stuff */ |
152 |
static SV *sv_pool_rss; |
153 |
static SV *sv_pool_size; |
154 |
static SV *sv_async_pool_idle; /* description string */ |
155 |
static AV *av_async_pool; /* idle pool */ |
156 |
static SV *sv_Coro; /* class string */ |
157 |
static CV *cv_pool_handler; |
158 |
|
159 |
/* Coro::AnyEvent */ |
160 |
static SV *sv_activity; |
161 |
|
162 |
/* enable processtime/realtime profiling */ |
163 |
static char enable_times; |
164 |
typedef U32 coro_ts[2]; |
165 |
static coro_ts time_real, time_cpu; |
166 |
static char times_valid; |
167 |
|
168 |
static struct coro_cctx *cctx_first; |
169 |
static int cctx_count, cctx_idle; |
170 |
|
171 |
enum { |
172 |
CC_MAPPED = 0x01, |
173 |
CC_NOREUSE = 0x02, /* throw this away after tracing */ |
174 |
CC_TRACE = 0x04, |
175 |
CC_TRACE_SUB = 0x08, /* trace sub calls */ |
176 |
CC_TRACE_LINE = 0x10, /* trace each statement */ |
177 |
CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
178 |
}; |
179 |
|
180 |
/* this is a structure representing a c-level coroutine */ |
181 |
typedef struct coro_cctx |
182 |
{ |
183 |
struct coro_cctx *next; |
184 |
|
185 |
/* the stack */ |
186 |
void *sptr; |
187 |
size_t ssize; |
188 |
|
189 |
/* cpu state */ |
190 |
void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
191 |
JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
192 |
JMPENV *top_env; |
193 |
coro_context cctx; |
194 |
|
195 |
U32 gen; |
196 |
#if CORO_USE_VALGRIND |
197 |
int valgrind_id; |
198 |
#endif |
199 |
unsigned char flags; |
200 |
} coro_cctx; |
201 |
|
202 |
static coro_cctx *cctx_current; /* the currently running cctx */ |
203 |
|
204 |
/*****************************************************************************/ |
205 |
|
206 |
enum { |
207 |
CF_RUNNING = 0x0001, /* coroutine is running */ |
208 |
CF_READY = 0x0002, /* coroutine is ready */ |
209 |
CF_NEW = 0x0004, /* has never been switched to */ |
210 |
CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
211 |
CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */ |
212 |
CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */ |
213 |
}; |
214 |
|
215 |
/* the structure where most of the perl state is stored, overlaid on the cxstack */ |
216 |
typedef struct |
217 |
{ |
218 |
SV *defsv; |
219 |
AV *defav; |
220 |
SV *errsv; |
221 |
SV *irsgv; |
222 |
HV *hinthv; |
223 |
#define VAR(name,type) type name; |
224 |
# include "state.h" |
225 |
#undef VAR |
226 |
} perl_slots; |
227 |
|
228 |
// how many context stack entries do we need for perl_slots |
229 |
#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
230 |
|
231 |
/* this is a structure representing a perl-level coroutine */ |
232 |
struct coro { |
233 |
/* the C coroutine allocated to this perl coroutine, if any */ |
234 |
coro_cctx *cctx; |
235 |
|
236 |
/* ready queue */ |
237 |
struct coro *next_ready; |
238 |
|
239 |
/* state data */ |
240 |
struct CoroSLF slf_frame; /* saved slf frame */ |
241 |
AV *mainstack; |
242 |
perl_slots *slot; /* basically the saved sp */ |
243 |
|
244 |
CV *startcv; /* the CV to execute */ |
245 |
AV *args; /* data associated with this coroutine (initial args) */ |
246 |
int refcnt; /* coroutines are refcounted, yes */ |
247 |
int flags; /* CF_ flags */ |
248 |
HV *hv; /* the perl hash associated with this coro, if any */ |
249 |
|
250 |
/* statistics */ |
251 |
int usecount; /* number of transfers to this coro */ |
252 |
|
253 |
/* coro process data */ |
254 |
int prio; |
255 |
SV *except; /* exception to be thrown */ |
256 |
SV *rouse_cb; |
257 |
|
258 |
/* async_pool */ |
259 |
SV *saved_deffh; |
260 |
SV *invoke_cb; |
261 |
AV *invoke_av; |
262 |
|
263 |
/* on_enter/on_leave */ |
264 |
AV *on_enter; |
265 |
AV *on_leave; |
266 |
|
267 |
/* swap_sv */ |
268 |
AV *swap_sv; |
269 |
|
270 |
/* times */ |
271 |
coro_ts t_cpu, t_real; |
272 |
|
273 |
/* linked list */ |
274 |
struct coro *next, *prev; |
275 |
}; |
276 |
|
277 |
typedef struct coro *Coro__State; |
278 |
typedef struct coro *Coro__State_or_hashref; |
279 |
|
280 |
/* the following variables are effectively part of the perl context */ |
281 |
/* and get copied between struct coro and these variables */ |
282 |
/* the main reason we don't support windows process emulation */ |
283 |
static struct CoroSLF slf_frame; /* the current slf frame */ |
284 |
|
285 |
/** Coro ********************************************************************/ |
286 |
|
287 |
#define CORO_PRIO_MAX 3 |
288 |
#define CORO_PRIO_HIGH 1 |
289 |
#define CORO_PRIO_NORMAL 0 |
290 |
#define CORO_PRIO_LOW -1 |
291 |
#define CORO_PRIO_IDLE -3 |
292 |
#define CORO_PRIO_MIN -4 |
293 |
|
294 |
/* for Coro.pm */ |
295 |
static SV *coro_current; |
296 |
static SV *coro_readyhook; |
297 |
static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */ |
298 |
static CV *cv_coro_run; |
299 |
static struct coro *coro_first; |
300 |
#define coro_nready coroapi.nready |
301 |
|
302 |
/** Coro::Select ************************************************************/ |
303 |
|
304 |
static OP *(*coro_old_pp_sselect) (pTHX); |
305 |
static SV *coro_select_select; |
306 |
|
307 |
/* horrible hack, but if it works... */ |
308 |
static OP * |
309 |
coro_pp_sselect (pTHX) |
310 |
{ |
311 |
dSP; |
312 |
PUSHMARK (SP - 4); /* fake argument list */ |
313 |
XPUSHs (coro_select_select); |
314 |
PUTBACK; |
315 |
|
316 |
/* entersub is an UNOP, select a LISTOP... keep your fingers crossed */ |
317 |
PL_op->op_flags |= OPf_STACKED; |
318 |
PL_op->op_private = 0; |
319 |
return PL_ppaddr [OP_ENTERSUB](aTHX); |
320 |
} |
321 |
|
322 |
/** time stuff **************************************************************/ |
323 |
|
324 |
#ifdef HAS_GETTIMEOFDAY |
325 |
|
326 |
static void |
327 |
coro_u2time (pTHX_ UV ret[2]) |
328 |
{ |
329 |
struct timeval tv; |
330 |
gettimeofday (&tv, 0); |
331 |
|
332 |
ret [0] = tv.tv_sec; |
333 |
ret [1] = tv.tv_usec; |
334 |
} |
335 |
|
336 |
static double |
337 |
coro_nvtime () |
338 |
{ |
339 |
struct timeval tv; |
340 |
gettimeofday (&tv, 0); |
341 |
|
342 |
return tv.tv_sec + tv.tv_usec * 1e-6; |
343 |
} |
344 |
|
345 |
static void |
346 |
time_init (pTHX) |
347 |
{ |
348 |
nvtime = coro_nvtime; |
349 |
u2time = coro_u2time; |
350 |
} |
351 |
|
352 |
#else |
353 |
|
354 |
static void |
355 |
time_init (pTHX) |
356 |
{ |
357 |
SV **svp; |
358 |
|
359 |
require_pv ("Time/HiRes.pm"); |
360 |
|
361 |
svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
362 |
|
363 |
if (!svp) croak ("Time::HiRes is required, but missing. Caught"); |
364 |
if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught"); |
365 |
|
366 |
nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
367 |
|
368 |
svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0); |
369 |
u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp)); |
370 |
} |
371 |
|
372 |
#endif |
373 |
|
374 |
/** lowlevel stuff **********************************************************/ |
375 |
|
376 |
static SV * |
377 |
coro_get_sv (pTHX_ const char *name, int create) |
378 |
{ |
379 |
#if PERL_VERSION_ATLEAST (5,10,0) |
380 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
381 |
get_sv (name, create); |
382 |
#endif |
383 |
return get_sv (name, create); |
384 |
} |
385 |
|
386 |
static AV * |
387 |
coro_get_av (pTHX_ const char *name, int create) |
388 |
{ |
389 |
#if PERL_VERSION_ATLEAST (5,10,0) |
390 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
391 |
get_av (name, create); |
392 |
#endif |
393 |
return get_av (name, create); |
394 |
} |
395 |
|
396 |
static HV * |
397 |
coro_get_hv (pTHX_ const char *name, int create) |
398 |
{ |
399 |
#if PERL_VERSION_ATLEAST (5,10,0) |
400 |
/* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
401 |
get_hv (name, create); |
402 |
#endif |
403 |
return get_hv (name, create); |
404 |
} |
405 |
|
406 |
INLINE void |
407 |
coro_times_update () |
408 |
{ |
409 |
#ifdef coro_clock_gettime |
410 |
struct timespec ts; |
411 |
|
412 |
ts.tv_sec = ts.tv_nsec = 0; |
413 |
coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts); |
414 |
time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec; |
415 |
|
416 |
ts.tv_sec = ts.tv_nsec = 0; |
417 |
coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts); |
418 |
time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec; |
419 |
#else |
420 |
dTHX; |
421 |
UV tv[2]; |
422 |
|
423 |
u2time (aTHX_ tv); |
424 |
time_real [0] = tv [0]; |
425 |
time_real [1] = tv [1] * 1000; |
426 |
#endif |
427 |
} |
428 |
|
429 |
INLINE void |
430 |
coro_times_add (struct coro *c) |
431 |
{ |
432 |
c->t_real [1] += time_real [1]; |
433 |
if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; } |
434 |
c->t_real [0] += time_real [0]; |
435 |
|
436 |
c->t_cpu [1] += time_cpu [1]; |
437 |
if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; } |
438 |
c->t_cpu [0] += time_cpu [0]; |
439 |
} |
440 |
|
441 |
INLINE void |
442 |
coro_times_sub (struct coro *c) |
443 |
{ |
444 |
if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; } |
445 |
c->t_real [1] -= time_real [1]; |
446 |
c->t_real [0] -= time_real [0]; |
447 |
|
448 |
if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; } |
449 |
c->t_cpu [1] -= time_cpu [1]; |
450 |
c->t_cpu [0] -= time_cpu [0]; |
451 |
} |
452 |
|
453 |
/*****************************************************************************/ |
454 |
/* magic glue */ |
455 |
|
456 |
#define CORO_MAGIC_type_cv 26 |
457 |
#define CORO_MAGIC_type_state PERL_MAGIC_ext |
458 |
|
459 |
#define CORO_MAGIC_NN(sv, type) \ |
460 |
(expect_true (SvMAGIC (sv)->mg_type == type) \ |
461 |
? SvMAGIC (sv) \ |
462 |
: mg_find (sv, type)) |
463 |
|
464 |
#define CORO_MAGIC(sv, type) \ |
465 |
(expect_true (SvMAGIC (sv)) \ |
466 |
? CORO_MAGIC_NN (sv, type) \ |
467 |
: 0) |
468 |
|
469 |
#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
470 |
#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) |
471 |
|
472 |
INLINE struct coro * |
473 |
SvSTATE_ (pTHX_ SV *coro) |
474 |
{ |
475 |
HV *stash; |
476 |
MAGIC *mg; |
477 |
|
478 |
if (SvROK (coro)) |
479 |
coro = SvRV (coro); |
480 |
|
481 |
if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
482 |
croak ("Coro::State object required"); |
483 |
|
484 |
stash = SvSTASH (coro); |
485 |
if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
486 |
{ |
487 |
/* very slow, but rare, check */ |
488 |
if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
489 |
croak ("Coro::State object required"); |
490 |
} |
491 |
|
492 |
mg = CORO_MAGIC_state (coro); |
493 |
return (struct coro *)mg->mg_ptr; |
494 |
} |
495 |
|
496 |
#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
497 |
|
498 |
/* faster than SvSTATE, but expects a coroutine hv */ |
499 |
#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr) |
500 |
#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
501 |
|
502 |
/*****************************************************************************/ |
503 |
/* padlist management and caching */ |
504 |
|
505 |
static AV * |
506 |
coro_derive_padlist (pTHX_ CV *cv) |
507 |
{ |
508 |
AV *padlist = CvPADLIST (cv); |
509 |
AV *newpadlist, *newpad; |
510 |
|
511 |
newpadlist = newAV (); |
512 |
AvREAL_off (newpadlist); |
513 |
#if PERL_VERSION_ATLEAST (5,10,0) |
514 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
515 |
#else |
516 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
517 |
#endif |
518 |
newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
519 |
--AvFILLp (padlist); |
520 |
|
521 |
av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0])); |
522 |
av_store (newpadlist, 1, (SV *)newpad); |
523 |
|
524 |
return newpadlist; |
525 |
} |
526 |
|
527 |
static void |
528 |
free_padlist (pTHX_ AV *padlist) |
529 |
{ |
530 |
/* may be during global destruction */ |
531 |
if (!IN_DESTRUCT) |
532 |
{ |
533 |
I32 i = AvFILLp (padlist); |
534 |
|
535 |
while (i > 0) /* special-case index 0 */ |
536 |
{ |
537 |
/* we try to be extra-careful here */ |
538 |
AV *av = (AV *)AvARRAY (padlist)[i--]; |
539 |
I32 j = AvFILLp (av); |
540 |
|
541 |
while (j >= 0) |
542 |
SvREFCNT_dec (AvARRAY (av)[j--]); |
543 |
|
544 |
AvFILLp (av) = -1; |
545 |
SvREFCNT_dec (av); |
546 |
} |
547 |
|
548 |
SvREFCNT_dec (AvARRAY (padlist)[0]); |
549 |
|
550 |
AvFILLp (padlist) = -1; |
551 |
SvREFCNT_dec ((SV*)padlist); |
552 |
} |
553 |
} |
554 |
|
555 |
static int |
556 |
coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
557 |
{ |
558 |
AV *padlist; |
559 |
AV *av = (AV *)mg->mg_obj; |
560 |
|
561 |
/* perl manages to free our internal AV and _then_ call us */ |
562 |
if (IN_DESTRUCT) |
563 |
return 0; |
564 |
|
565 |
/* casting is fun. */ |
566 |
while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
567 |
free_padlist (aTHX_ padlist); |
568 |
|
569 |
SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
570 |
|
571 |
return 0; |
572 |
} |
573 |
|
574 |
static MGVTBL coro_cv_vtbl = { |
575 |
0, 0, 0, 0, |
576 |
coro_cv_free |
577 |
}; |
578 |
|
579 |
/* the next two functions merely cache the padlists */ |
580 |
static void |
581 |
get_padlist (pTHX_ CV *cv) |
582 |
{ |
583 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
584 |
AV *av; |
585 |
|
586 |
if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
587 |
CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
588 |
else |
589 |
{ |
590 |
#if CORO_PREFER_PERL_FUNCTIONS |
591 |
/* this is probably cleaner? but also slower! */ |
592 |
/* in practise, it seems to be less stable */ |
593 |
CV *cp = Perl_cv_clone (aTHX_ cv); |
594 |
CvPADLIST (cv) = CvPADLIST (cp); |
595 |
CvPADLIST (cp) = 0; |
596 |
SvREFCNT_dec (cp); |
597 |
#else |
598 |
CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); |
599 |
#endif |
600 |
} |
601 |
} |
602 |
|
603 |
static void |
604 |
put_padlist (pTHX_ CV *cv) |
605 |
{ |
606 |
MAGIC *mg = CORO_MAGIC_cv (cv); |
607 |
AV *av; |
608 |
|
609 |
if (expect_false (!mg)) |
610 |
mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
611 |
|
612 |
av = (AV *)mg->mg_obj; |
613 |
|
614 |
if (expect_false (AvFILLp (av) >= AvMAX (av))) |
615 |
av_extend (av, AvFILLp (av) + 1); |
616 |
|
617 |
AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
618 |
} |
619 |
|
620 |
/** load & save, init *******************************************************/ |
621 |
|
622 |
/* swap sv heads, at least logically */ |
623 |
static void |
624 |
swap_svs (pTHX_ Coro__State c) |
625 |
{ |
626 |
int i; |
627 |
|
628 |
for (i = 0; i <= AvFILLp (c->swap_sv); ) |
629 |
{ |
630 |
SV *a = AvARRAY (c->swap_sv)[i++]; |
631 |
SV *b = AvARRAY (c->swap_sv)[i++]; |
632 |
|
633 |
const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */ |
634 |
SV tmp; |
635 |
|
636 |
/* swap sv_any */ |
637 |
SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp); |
638 |
|
639 |
/* swap sv_flags */ |
640 |
SvFLAGS (&tmp) = SvFLAGS (a); |
641 |
SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep); |
642 |
SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep); |
643 |
|
644 |
#if PERL_VERSION_ATLEAST (5,10,0) |
645 |
/* perl 5.10 complicates this _quite_ a bit, but it also is |
646 |
* much faster, so no quarrels here. alternatively, we could |
647 |
* sv_upgrade to avoid this. |
648 |
*/ |
649 |
{ |
650 |
/* swap sv_u */ |
651 |
tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u; |
652 |
|
653 |
/* if SvANY points to the head, we need to adjust the pointers, |
654 |
* as the pointer for a still points to b, and maybe vice versa. |
655 |
*/ |
656 |
#define svany_in_head(type) \ |
657 |
(((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type))) |
658 |
|
659 |
if (svany_in_head (SvTYPE (a))) |
660 |
SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a); |
661 |
|
662 |
if (svany_in_head (SvTYPE (b))) |
663 |
SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b); |
664 |
} |
665 |
#endif |
666 |
} |
667 |
} |
668 |
|
669 |
#define SWAP_SVS(coro) \ |
670 |
if (expect_false ((coro)->swap_sv)) \ |
671 |
swap_svs (aTHX_ (coro)) |
672 |
|
673 |
static void |
674 |
on_enterleave_call (pTHX_ SV *cb); |
675 |
|
676 |
static void |
677 |
load_perl (pTHX_ Coro__State c) |
678 |
{ |
679 |
perl_slots *slot = c->slot; |
680 |
c->slot = 0; |
681 |
|
682 |
PL_mainstack = c->mainstack; |
683 |
|
684 |
GvSV (PL_defgv) = slot->defsv; |
685 |
GvAV (PL_defgv) = slot->defav; |
686 |
GvSV (PL_errgv) = slot->errsv; |
687 |
GvSV (irsgv) = slot->irsgv; |
688 |
GvHV (PL_hintgv) = slot->hinthv; |
689 |
|
690 |
#define VAR(name,type) PL_ ## name = slot->name; |
691 |
# include "state.h" |
692 |
#undef VAR |
693 |
|
694 |
{ |
695 |
dSP; |
696 |
|
697 |
CV *cv; |
698 |
|
699 |
/* now do the ugly restore mess */ |
700 |
while (expect_true (cv = (CV *)POPs)) |
701 |
{ |
702 |
put_padlist (aTHX_ cv); /* mark this padlist as available */ |
703 |
CvDEPTH (cv) = PTR2IV (POPs); |
704 |
CvPADLIST (cv) = (AV *)POPs; |
705 |
} |
706 |
|
707 |
PUTBACK; |
708 |
} |
709 |
|
710 |
slf_frame = c->slf_frame; |
711 |
CORO_THROW = c->except; |
712 |
|
713 |
if (expect_false (enable_times)) |
714 |
{ |
715 |
if (expect_false (!times_valid)) |
716 |
coro_times_update (); |
717 |
|
718 |
coro_times_sub (c); |
719 |
} |
720 |
|
721 |
if (expect_false (c->on_enter)) |
722 |
{ |
723 |
int i; |
724 |
|
725 |
for (i = 0; i <= AvFILLp (c->on_enter); ++i) |
726 |
on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]); |
727 |
} |
728 |
|
729 |
SWAP_SVS (c); |
730 |
} |
731 |
|
732 |
static void |
733 |
save_perl (pTHX_ Coro__State c) |
734 |
{ |
735 |
SWAP_SVS (c); |
736 |
|
737 |
if (expect_false (c->on_leave)) |
738 |
{ |
739 |
int i; |
740 |
|
741 |
for (i = AvFILLp (c->on_leave); i >= 0; --i) |
742 |
on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]); |
743 |
} |
744 |
|
745 |
times_valid = 0; |
746 |
|
747 |
if (expect_false (enable_times)) |
748 |
{ |
749 |
coro_times_update (); times_valid = 1; |
750 |
coro_times_add (c); |
751 |
} |
752 |
|
753 |
c->except = CORO_THROW; |
754 |
c->slf_frame = slf_frame; |
755 |
|
756 |
{ |
757 |
dSP; |
758 |
I32 cxix = cxstack_ix; |
759 |
PERL_CONTEXT *ccstk = cxstack; |
760 |
PERL_SI *top_si = PL_curstackinfo; |
761 |
|
762 |
/* |
763 |
* the worst thing you can imagine happens first - we have to save |
764 |
* (and reinitialize) all cv's in the whole callchain :( |
765 |
*/ |
766 |
|
767 |
XPUSHs (Nullsv); |
768 |
/* this loop was inspired by pp_caller */ |
769 |
for (;;) |
770 |
{ |
771 |
while (expect_true (cxix >= 0)) |
772 |
{ |
773 |
PERL_CONTEXT *cx = &ccstk[cxix--]; |
774 |
|
775 |
if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT)) |
776 |
{ |
777 |
CV *cv = cx->blk_sub.cv; |
778 |
|
779 |
if (expect_true (CvDEPTH (cv))) |
780 |
{ |
781 |
EXTEND (SP, 3); |
782 |
PUSHs ((SV *)CvPADLIST (cv)); |
783 |
PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
784 |
PUSHs ((SV *)cv); |
785 |
|
786 |
CvDEPTH (cv) = 0; |
787 |
get_padlist (aTHX_ cv); |
788 |
} |
789 |
} |
790 |
} |
791 |
|
792 |
if (expect_true (top_si->si_type == PERLSI_MAIN)) |
793 |
break; |
794 |
|
795 |
top_si = top_si->si_prev; |
796 |
ccstk = top_si->si_cxstack; |
797 |
cxix = top_si->si_cxix; |
798 |
} |
799 |
|
800 |
PUTBACK; |
801 |
} |
802 |
|
803 |
/* allocate some space on the context stack for our purposes */ |
804 |
if (expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max)) |
805 |
{ |
806 |
unsigned int i; |
807 |
|
808 |
for (i = 0; i < SLOT_COUNT; ++i) |
809 |
CXINC; |
810 |
|
811 |
cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
812 |
} |
813 |
|
814 |
c->mainstack = PL_mainstack; |
815 |
|
816 |
{ |
817 |
perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
818 |
|
819 |
slot->defav = GvAV (PL_defgv); |
820 |
slot->defsv = DEFSV; |
821 |
slot->errsv = ERRSV; |
822 |
slot->irsgv = GvSV (irsgv); |
823 |
slot->hinthv = GvHV (PL_hintgv); |
824 |
|
825 |
#define VAR(name,type) slot->name = PL_ ## name; |
826 |
# include "state.h" |
827 |
#undef VAR |
828 |
} |
829 |
} |
830 |
|
831 |
/* |
832 |
* allocate various perl stacks. This is almost an exact copy |
833 |
* of perl.c:init_stacks, except that it uses less memory |
834 |
* on the (sometimes correct) assumption that coroutines do |
835 |
* not usually need a lot of stackspace. |
836 |
*/ |
837 |
#if CORO_PREFER_PERL_FUNCTIONS |
838 |
# define coro_init_stacks(thx) init_stacks () |
839 |
#else |
840 |
static void |
841 |
coro_init_stacks (pTHX) |
842 |
{ |
843 |
PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */ |
844 |
PL_curstackinfo->si_type = PERLSI_MAIN; |
845 |
PL_curstack = PL_curstackinfo->si_stack; |
846 |
PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
847 |
|
848 |
PL_stack_base = AvARRAY(PL_curstack); |
849 |
PL_stack_sp = PL_stack_base; |
850 |
PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
851 |
|
852 |
New(50,PL_tmps_stack,32,SV*); |
853 |
PL_tmps_floor = -1; |
854 |
PL_tmps_ix = -1; |
855 |
PL_tmps_max = 32; |
856 |
|
857 |
New(54,PL_markstack,16,I32); |
858 |
PL_markstack_ptr = PL_markstack; |
859 |
PL_markstack_max = PL_markstack + 16; |
860 |
|
861 |
#ifdef SET_MARK_OFFSET |
862 |
SET_MARK_OFFSET; |
863 |
#endif |
864 |
|
865 |
New(54,PL_scopestack,8,I32); |
866 |
PL_scopestack_ix = 0; |
867 |
PL_scopestack_max = 8; |
868 |
|
869 |
New(54,PL_savestack,24,ANY); |
870 |
PL_savestack_ix = 0; |
871 |
PL_savestack_max = 24; |
872 |
|
873 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
874 |
New(54,PL_retstack,4,OP*); |
875 |
PL_retstack_ix = 0; |
876 |
PL_retstack_max = 4; |
877 |
#endif |
878 |
} |
879 |
#endif |
880 |
|
881 |
/* |
882 |
* destroy the stacks, the callchain etc... |
883 |
*/ |
884 |
static void |
885 |
coro_destruct_stacks (pTHX) |
886 |
{ |
887 |
while (PL_curstackinfo->si_next) |
888 |
PL_curstackinfo = PL_curstackinfo->si_next; |
889 |
|
890 |
while (PL_curstackinfo) |
891 |
{ |
892 |
PERL_SI *p = PL_curstackinfo->si_prev; |
893 |
|
894 |
if (!IN_DESTRUCT) |
895 |
SvREFCNT_dec (PL_curstackinfo->si_stack); |
896 |
|
897 |
Safefree (PL_curstackinfo->si_cxstack); |
898 |
Safefree (PL_curstackinfo); |
899 |
PL_curstackinfo = p; |
900 |
} |
901 |
|
902 |
Safefree (PL_tmps_stack); |
903 |
Safefree (PL_markstack); |
904 |
Safefree (PL_scopestack); |
905 |
Safefree (PL_savestack); |
906 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
907 |
Safefree (PL_retstack); |
908 |
#endif |
909 |
} |
910 |
|
911 |
#define CORO_RSS \ |
912 |
rss += sizeof (SYM (curstackinfo)); \ |
913 |
rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \ |
914 |
rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \ |
915 |
rss += SYM (tmps_max) * sizeof (SV *); \ |
916 |
rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \ |
917 |
rss += SYM (scopestack_max) * sizeof (I32); \ |
918 |
rss += SYM (savestack_max) * sizeof (ANY); |
919 |
|
920 |
static size_t |
921 |
coro_rss (pTHX_ struct coro *coro) |
922 |
{ |
923 |
size_t rss = sizeof (*coro); |
924 |
|
925 |
if (coro->mainstack) |
926 |
{ |
927 |
if (coro->flags & CF_RUNNING) |
928 |
{ |
929 |
#define SYM(sym) PL_ ## sym |
930 |
CORO_RSS; |
931 |
#undef SYM |
932 |
} |
933 |
else |
934 |
{ |
935 |
#define SYM(sym) coro->slot->sym |
936 |
CORO_RSS; |
937 |
#undef SYM |
938 |
} |
939 |
} |
940 |
|
941 |
return rss; |
942 |
} |
943 |
|
944 |
/** coroutine stack handling ************************************************/ |
945 |
|
946 |
static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
947 |
static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
948 |
static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
949 |
|
950 |
/* apparently < 5.8.8 */ |
951 |
#ifndef MgPV_nolen_const |
952 |
#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
953 |
SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
954 |
(const char*)(mg)->mg_ptr) |
955 |
#endif |
956 |
|
957 |
/* |
958 |
* This overrides the default magic get method of %SIG elements. |
959 |
* The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
960 |
* and instead of trying to save and restore the hash elements, we just provide |
961 |
* readback here. |
962 |
*/ |
963 |
static int |
964 |
coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
965 |
{ |
966 |
const char *s = MgPV_nolen_const (mg); |
967 |
|
968 |
if (*s == '_') |
969 |
{ |
970 |
SV **svp = 0; |
971 |
|
972 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
973 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
974 |
|
975 |
if (svp) |
976 |
{ |
977 |
sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
978 |
return 0; |
979 |
} |
980 |
} |
981 |
|
982 |
return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
983 |
} |
984 |
|
985 |
static int |
986 |
coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
987 |
{ |
988 |
const char *s = MgPV_nolen_const (mg); |
989 |
|
990 |
if (*s == '_') |
991 |
{ |
992 |
SV **svp = 0; |
993 |
|
994 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
995 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
996 |
|
997 |
if (svp) |
998 |
{ |
999 |
SV *old = *svp; |
1000 |
*svp = 0; |
1001 |
SvREFCNT_dec (old); |
1002 |
return 0; |
1003 |
} |
1004 |
} |
1005 |
|
1006 |
return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
1007 |
} |
1008 |
|
1009 |
static int |
1010 |
coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
1011 |
{ |
1012 |
const char *s = MgPV_nolen_const (mg); |
1013 |
|
1014 |
if (*s == '_') |
1015 |
{ |
1016 |
SV **svp = 0; |
1017 |
|
1018 |
if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
1019 |
if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
1020 |
|
1021 |
if (svp) |
1022 |
{ |
1023 |
SV *old = *svp; |
1024 |
*svp = SvOK (sv) ? newSVsv (sv) : 0; |
1025 |
SvREFCNT_dec (old); |
1026 |
return 0; |
1027 |
} |
1028 |
} |
1029 |
|
1030 |
return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
1031 |
} |
1032 |
|
1033 |
static void |
1034 |
prepare_nop (pTHX_ struct coro_transfer_args *ta) |
1035 |
{ |
1036 |
/* kind of mega-hacky, but works */ |
1037 |
ta->next = ta->prev = (struct coro *)ta; |
1038 |
} |
1039 |
|
1040 |
static int |
1041 |
slf_check_nop (pTHX_ struct CoroSLF *frame) |
1042 |
{ |
1043 |
return 0; |
1044 |
} |
1045 |
|
1046 |
static int |
1047 |
slf_check_repeat (pTHX_ struct CoroSLF *frame) |
1048 |
{ |
1049 |
return 1; |
1050 |
} |
1051 |
|
1052 |
static UNOP init_perl_op; |
1053 |
|
1054 |
static void NOINLINE /* noinline to keep it out of the transfer fast path */ |
1055 |
init_perl (pTHX_ struct coro *coro) |
1056 |
{ |
1057 |
/* |
1058 |
* emulate part of the perl startup here. |
1059 |
*/ |
1060 |
coro_init_stacks (aTHX); |
1061 |
|
1062 |
PL_runops = RUNOPS_DEFAULT; |
1063 |
PL_curcop = &PL_compiling; |
1064 |
PL_in_eval = EVAL_NULL; |
1065 |
PL_comppad = 0; |
1066 |
PL_comppad_name = 0; |
1067 |
PL_comppad_name_fill = 0; |
1068 |
PL_comppad_name_floor = 0; |
1069 |
PL_curpm = 0; |
1070 |
PL_curpad = 0; |
1071 |
PL_localizing = 0; |
1072 |
PL_restartop = 0; |
1073 |
#if PERL_VERSION_ATLEAST (5,10,0) |
1074 |
PL_parser = 0; |
1075 |
#endif |
1076 |
PL_hints = 0; |
1077 |
|
1078 |
/* recreate the die/warn hooks */ |
1079 |
PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
1080 |
PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
1081 |
|
1082 |
GvSV (PL_defgv) = newSV (0); |
1083 |
GvAV (PL_defgv) = coro->args; coro->args = 0; |
1084 |
GvSV (PL_errgv) = newSV (0); |
1085 |
GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
1086 |
GvHV (PL_hintgv) = 0; |
1087 |
PL_rs = newSVsv (GvSV (irsgv)); |
1088 |
PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
1089 |
|
1090 |
{ |
1091 |
dSP; |
1092 |
UNOP myop; |
1093 |
|
1094 |
Zero (&myop, 1, UNOP); |
1095 |
myop.op_next = Nullop; |
1096 |
myop.op_type = OP_ENTERSUB; |
1097 |
myop.op_flags = OPf_WANT_VOID; |
1098 |
|
1099 |
PUSHMARK (SP); |
1100 |
PUSHs ((SV *)coro->startcv); |
1101 |
PUTBACK; |
1102 |
PL_op = (OP *)&myop; |
1103 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
1104 |
} |
1105 |
|
1106 |
/* this newly created coroutine might be run on an existing cctx which most |
1107 |
* likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
1108 |
*/ |
1109 |
slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
1110 |
slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
1111 |
|
1112 |
/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ |
1113 |
init_perl_op.op_next = PL_op; |
1114 |
init_perl_op.op_type = OP_ENTERSUB; |
1115 |
init_perl_op.op_ppaddr = pp_slf; |
1116 |
/* no flags etc. required, as an init function won't be called */ |
1117 |
|
1118 |
PL_op = (OP *)&init_perl_op; |
1119 |
|
1120 |
/* copy throw, in case it was set before init_perl */ |
1121 |
CORO_THROW = coro->except; |
1122 |
|
1123 |
SWAP_SVS (coro); |
1124 |
|
1125 |
if (expect_false (enable_times)) |
1126 |
{ |
1127 |
coro_times_update (); |
1128 |
coro_times_sub (coro); |
1129 |
} |
1130 |
} |
1131 |
|
1132 |
static void |
1133 |
coro_unwind_stacks (pTHX) |
1134 |
{ |
1135 |
if (!IN_DESTRUCT) |
1136 |
{ |
1137 |
/* restore all saved variables and stuff */ |
1138 |
LEAVE_SCOPE (0); |
1139 |
assert (PL_tmps_floor == -1); |
1140 |
|
1141 |
/* free all temporaries */ |
1142 |
FREETMPS; |
1143 |
assert (PL_tmps_ix == -1); |
1144 |
|
1145 |
/* unwind all extra stacks */ |
1146 |
POPSTACK_TO (PL_mainstack); |
1147 |
|
1148 |
/* unwind main stack */ |
1149 |
dounwind (-1); |
1150 |
} |
1151 |
} |
1152 |
|
1153 |
static void |
1154 |
destroy_perl (pTHX_ struct coro *coro) |
1155 |
{ |
1156 |
SV *svf [9]; |
1157 |
|
1158 |
{ |
1159 |
SV *old_current = SvRV (coro_current); |
1160 |
struct coro *current = SvSTATE (old_current); |
1161 |
|
1162 |
assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack)); |
1163 |
|
1164 |
save_perl (aTHX_ current); |
1165 |
|
1166 |
/* this will cause transfer_check to croak on block*/ |
1167 |
SvRV_set (coro_current, (SV *)coro->hv); |
1168 |
|
1169 |
load_perl (aTHX_ coro); |
1170 |
|
1171 |
coro_unwind_stacks (aTHX); |
1172 |
coro_destruct_stacks (aTHX); |
1173 |
|
1174 |
/* restore swapped sv's */ |
1175 |
SWAP_SVS (coro); |
1176 |
|
1177 |
// now save some sv's to be free'd later |
1178 |
svf [0] = GvSV (PL_defgv); |
1179 |
svf [1] = (SV *)GvAV (PL_defgv); |
1180 |
svf [2] = GvSV (PL_errgv); |
1181 |
svf [3] = (SV *)PL_defoutgv; |
1182 |
svf [4] = PL_rs; |
1183 |
svf [5] = GvSV (irsgv); |
1184 |
svf [6] = (SV *)GvHV (PL_hintgv); |
1185 |
svf [7] = PL_diehook; |
1186 |
svf [8] = PL_warnhook; |
1187 |
assert (9 == sizeof (svf) / sizeof (*svf)); |
1188 |
|
1189 |
SvRV_set (coro_current, old_current); |
1190 |
|
1191 |
load_perl (aTHX_ current); |
1192 |
} |
1193 |
|
1194 |
{ |
1195 |
unsigned int i; |
1196 |
|
1197 |
for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i) |
1198 |
SvREFCNT_dec (svf [i]); |
1199 |
|
1200 |
SvREFCNT_dec (coro->saved_deffh); |
1201 |
SvREFCNT_dec (coro->rouse_cb); |
1202 |
SvREFCNT_dec (coro->invoke_cb); |
1203 |
SvREFCNT_dec (coro->invoke_av); |
1204 |
} |
1205 |
} |
1206 |
|
1207 |
INLINE void |
1208 |
free_coro_mortal (pTHX) |
1209 |
{ |
1210 |
if (expect_true (coro_mortal)) |
1211 |
{ |
1212 |
SvREFCNT_dec (coro_mortal); |
1213 |
coro_mortal = 0; |
1214 |
} |
1215 |
} |
1216 |
|
1217 |
static int |
1218 |
runops_trace (pTHX) |
1219 |
{ |
1220 |
COP *oldcop = 0; |
1221 |
int oldcxix = -2; |
1222 |
|
1223 |
while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
1224 |
{ |
1225 |
PERL_ASYNC_CHECK (); |
1226 |
|
1227 |
if (cctx_current->flags & CC_TRACE_ALL) |
1228 |
{ |
1229 |
if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB) |
1230 |
{ |
1231 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
1232 |
SV **bot, **top; |
1233 |
AV *av = newAV (); /* return values */ |
1234 |
SV **cb; |
1235 |
dSP; |
1236 |
|
1237 |
GV *gv = CvGV (cx->blk_sub.cv); |
1238 |
SV *fullname = sv_2mortal (newSV (0)); |
1239 |
if (isGV (gv)) |
1240 |
gv_efullname3 (fullname, gv, 0); |
1241 |
|
1242 |
bot = PL_stack_base + cx->blk_oldsp + 1; |
1243 |
top = cx->blk_gimme == G_ARRAY ? SP + 1 |
1244 |
: cx->blk_gimme == G_SCALAR ? bot + 1 |
1245 |
: bot; |
1246 |
|
1247 |
av_extend (av, top - bot); |
1248 |
while (bot < top) |
1249 |
av_push (av, SvREFCNT_inc_NN (*bot++)); |
1250 |
|
1251 |
PL_runops = RUNOPS_DEFAULT; |
1252 |
ENTER; |
1253 |
SAVETMPS; |
1254 |
EXTEND (SP, 3); |
1255 |
PUSHMARK (SP); |
1256 |
PUSHs (&PL_sv_no); |
1257 |
PUSHs (fullname); |
1258 |
PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
1259 |
PUTBACK; |
1260 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
1261 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1262 |
SPAGAIN; |
1263 |
FREETMPS; |
1264 |
LEAVE; |
1265 |
PL_runops = runops_trace; |
1266 |
} |
1267 |
|
1268 |
if (oldcop != PL_curcop) |
1269 |
{ |
1270 |
oldcop = PL_curcop; |
1271 |
|
1272 |
if (PL_curcop != &PL_compiling) |
1273 |
{ |
1274 |
SV **cb; |
1275 |
|
1276 |
if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB) |
1277 |
{ |
1278 |
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
1279 |
|
1280 |
if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
1281 |
{ |
1282 |
dSP; |
1283 |
GV *gv = CvGV (cx->blk_sub.cv); |
1284 |
SV *fullname = sv_2mortal (newSV (0)); |
1285 |
|
1286 |
if (isGV (gv)) |
1287 |
gv_efullname3 (fullname, gv, 0); |
1288 |
|
1289 |
PL_runops = RUNOPS_DEFAULT; |
1290 |
ENTER; |
1291 |
SAVETMPS; |
1292 |
EXTEND (SP, 3); |
1293 |
PUSHMARK (SP); |
1294 |
PUSHs (&PL_sv_yes); |
1295 |
PUSHs (fullname); |
1296 |
PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
1297 |
PUTBACK; |
1298 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
1299 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1300 |
SPAGAIN; |
1301 |
FREETMPS; |
1302 |
LEAVE; |
1303 |
PL_runops = runops_trace; |
1304 |
} |
1305 |
|
1306 |
oldcxix = cxstack_ix; |
1307 |
} |
1308 |
|
1309 |
if (cctx_current->flags & CC_TRACE_LINE) |
1310 |
{ |
1311 |
dSP; |
1312 |
|
1313 |
PL_runops = RUNOPS_DEFAULT; |
1314 |
ENTER; |
1315 |
SAVETMPS; |
1316 |
EXTEND (SP, 3); |
1317 |
PL_runops = RUNOPS_DEFAULT; |
1318 |
PUSHMARK (SP); |
1319 |
PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
1320 |
PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
1321 |
PUTBACK; |
1322 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
1323 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1324 |
SPAGAIN; |
1325 |
FREETMPS; |
1326 |
LEAVE; |
1327 |
PL_runops = runops_trace; |
1328 |
} |
1329 |
} |
1330 |
} |
1331 |
} |
1332 |
} |
1333 |
|
1334 |
TAINT_NOT; |
1335 |
return 0; |
1336 |
} |
1337 |
|
1338 |
static struct CoroSLF cctx_ssl_frame; |
1339 |
|
1340 |
static void |
1341 |
slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
1342 |
{ |
1343 |
ta->prev = 0; |
1344 |
} |
1345 |
|
1346 |
static int |
1347 |
slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) |
1348 |
{ |
1349 |
*frame = cctx_ssl_frame; |
1350 |
|
1351 |
return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ |
1352 |
} |
1353 |
|
1354 |
/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ |
1355 |
static void NOINLINE |
1356 |
cctx_prepare (pTHX) |
1357 |
{ |
1358 |
PL_top_env = &PL_start_env; |
1359 |
|
1360 |
if (cctx_current->flags & CC_TRACE) |
1361 |
PL_runops = runops_trace; |
1362 |
|
1363 |
/* we already must be executing an SLF op, there is no other valid way |
1364 |
* that can lead to creation of a new cctx */ |
1365 |
assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", |
1366 |
slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); |
1367 |
|
1368 |
/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ |
1369 |
cctx_ssl_frame = slf_frame; |
1370 |
|
1371 |
slf_frame.prepare = slf_prepare_set_stacklevel; |
1372 |
slf_frame.check = slf_check_set_stacklevel; |
1373 |
} |
1374 |
|
1375 |
/* the tail of transfer: execute stuff we can only do after a transfer */ |
1376 |
INLINE void |
1377 |
transfer_tail (pTHX) |
1378 |
{ |
1379 |
free_coro_mortal (aTHX); |
1380 |
} |
1381 |
|
1382 |
/* |
1383 |
* this is a _very_ stripped down perl interpreter ;) |
1384 |
*/ |
1385 |
static void |
1386 |
cctx_run (void *arg) |
1387 |
{ |
1388 |
#ifdef USE_ITHREADS |
1389 |
# if CORO_PTHREAD |
1390 |
PERL_SET_CONTEXT (coro_thx); |
1391 |
# endif |
1392 |
#endif |
1393 |
{ |
1394 |
dTHX; |
1395 |
|
1396 |
/* normally we would need to skip the entersub here */ |
1397 |
/* not doing so will re-execute it, which is exactly what we want */ |
1398 |
/* PL_nop = PL_nop->op_next */ |
1399 |
|
1400 |
/* inject a fake subroutine call to cctx_init */ |
1401 |
cctx_prepare (aTHX); |
1402 |
|
1403 |
/* cctx_run is the alternative tail of transfer() */ |
1404 |
transfer_tail (aTHX); |
1405 |
|
1406 |
/* somebody or something will hit me for both perl_run and PL_restartop */ |
1407 |
PL_restartop = PL_op; |
1408 |
perl_run (PL_curinterp); |
1409 |
/* |
1410 |
* Unfortunately, there is no way to get at the return values of the |
1411 |
* coro body here, as perl_run destroys these. Likewise, we cannot catch |
1412 |
* runtime errors here, as this is just a random interpreter, not a thread. |
1413 |
*/ |
1414 |
|
1415 |
/* |
1416 |
* If perl-run returns we assume exit() was being called or the coro |
1417 |
* fell off the end, which seems to be the only valid (non-bug) |
1418 |
* reason for perl_run to return. We try to exit by jumping to the |
1419 |
* bootstrap-time "top" top_env, as we cannot restore the "main" |
1420 |
* coroutine as Coro has no such concept. |
1421 |
* This actually isn't valid with the pthread backend, but OSes requiring |
1422 |
* that backend are too broken to do it in a standards-compliant way. |
1423 |
*/ |
1424 |
PL_top_env = main_top_env; |
1425 |
JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
1426 |
} |
1427 |
} |
1428 |
|
1429 |
static coro_cctx * |
1430 |
cctx_new () |
1431 |
{ |
1432 |
coro_cctx *cctx; |
1433 |
|
1434 |
++cctx_count; |
1435 |
New (0, cctx, 1, coro_cctx); |
1436 |
|
1437 |
cctx->gen = cctx_gen; |
1438 |
cctx->flags = 0; |
1439 |
cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
1440 |
|
1441 |
return cctx; |
1442 |
} |
1443 |
|
1444 |
/* create a new cctx only suitable as source */ |
1445 |
static coro_cctx * |
1446 |
cctx_new_empty () |
1447 |
{ |
1448 |
coro_cctx *cctx = cctx_new (); |
1449 |
|
1450 |
cctx->sptr = 0; |
1451 |
coro_create (&cctx->cctx, 0, 0, 0, 0); |
1452 |
|
1453 |
return cctx; |
1454 |
} |
1455 |
|
1456 |
/* create a new cctx suitable as destination/running a perl interpreter */ |
1457 |
static coro_cctx * |
1458 |
cctx_new_run () |
1459 |
{ |
1460 |
coro_cctx *cctx = cctx_new (); |
1461 |
void *stack_start; |
1462 |
size_t stack_size; |
1463 |
|
1464 |
#if HAVE_MMAP |
1465 |
cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
1466 |
/* mmap supposedly does allocate-on-write for us */ |
1467 |
cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
1468 |
|
1469 |
if (cctx->sptr != (void *)-1) |
1470 |
{ |
1471 |
#if CORO_STACKGUARD |
1472 |
mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
1473 |
#endif |
1474 |
stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
1475 |
stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
1476 |
cctx->flags |= CC_MAPPED; |
1477 |
} |
1478 |
else |
1479 |
#endif |
1480 |
{ |
1481 |
cctx->ssize = cctx_stacksize * (long)sizeof (long); |
1482 |
New (0, cctx->sptr, cctx_stacksize, long); |
1483 |
|
1484 |
if (!cctx->sptr) |
1485 |
{ |
1486 |
perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
1487 |
_exit (EXIT_FAILURE); |
1488 |
} |
1489 |
|
1490 |
stack_start = cctx->sptr; |
1491 |
stack_size = cctx->ssize; |
1492 |
} |
1493 |
|
1494 |
#if CORO_USE_VALGRIND |
1495 |
cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
1496 |
#endif |
1497 |
|
1498 |
coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
1499 |
|
1500 |
return cctx; |
1501 |
} |
1502 |
|
1503 |
static void |
1504 |
cctx_destroy (coro_cctx *cctx) |
1505 |
{ |
1506 |
if (!cctx) |
1507 |
return; |
1508 |
|
1509 |
assert (("FATAL: tried to destroy current cctx", cctx != cctx_current)); |
1510 |
|
1511 |
--cctx_count; |
1512 |
coro_destroy (&cctx->cctx); |
1513 |
|
1514 |
/* coro_transfer creates new, empty cctx's */ |
1515 |
if (cctx->sptr) |
1516 |
{ |
1517 |
#if CORO_USE_VALGRIND |
1518 |
VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
1519 |
#endif |
1520 |
|
1521 |
#if HAVE_MMAP |
1522 |
if (cctx->flags & CC_MAPPED) |
1523 |
munmap (cctx->sptr, cctx->ssize); |
1524 |
else |
1525 |
#endif |
1526 |
Safefree (cctx->sptr); |
1527 |
} |
1528 |
|
1529 |
Safefree (cctx); |
1530 |
} |
1531 |
|
1532 |
/* wether this cctx should be destructed */ |
1533 |
#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
1534 |
|
1535 |
static coro_cctx * |
1536 |
cctx_get (pTHX) |
1537 |
{ |
1538 |
while (expect_true (cctx_first)) |
1539 |
{ |
1540 |
coro_cctx *cctx = cctx_first; |
1541 |
cctx_first = cctx->next; |
1542 |
--cctx_idle; |
1543 |
|
1544 |
if (expect_true (!CCTX_EXPIRED (cctx))) |
1545 |
return cctx; |
1546 |
|
1547 |
cctx_destroy (cctx); |
1548 |
} |
1549 |
|
1550 |
return cctx_new_run (); |
1551 |
} |
1552 |
|
1553 |
static void |
1554 |
cctx_put (coro_cctx *cctx) |
1555 |
{ |
1556 |
assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
1557 |
|
1558 |
/* free another cctx if overlimit */ |
1559 |
if (expect_false (cctx_idle >= cctx_max_idle)) |
1560 |
{ |
1561 |
coro_cctx *first = cctx_first; |
1562 |
cctx_first = first->next; |
1563 |
--cctx_idle; |
1564 |
|
1565 |
cctx_destroy (first); |
1566 |
} |
1567 |
|
1568 |
++cctx_idle; |
1569 |
cctx->next = cctx_first; |
1570 |
cctx_first = cctx; |
1571 |
} |
1572 |
|
1573 |
/** coroutine switching *****************************************************/ |
1574 |
|
1575 |
static void |
1576 |
transfer_check (pTHX_ struct coro *prev, struct coro *next) |
1577 |
{ |
1578 |
/* TODO: throwing up here is considered harmful */ |
1579 |
|
1580 |
if (expect_true (prev != next)) |
1581 |
{ |
1582 |
if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
1583 |
croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,"); |
1584 |
|
1585 |
if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED))) |
1586 |
croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,"); |
1587 |
|
1588 |
#if !PERL_VERSION_ATLEAST (5,10,0) |
1589 |
if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
1590 |
croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); |
1591 |
#endif |
1592 |
} |
1593 |
} |
1594 |
|
1595 |
/* always use the TRANSFER macro */ |
1596 |
static void NOINLINE /* noinline so we have a fixed stackframe */ |
1597 |
transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
1598 |
{ |
1599 |
dSTACKLEVEL; |
1600 |
|
1601 |
/* sometimes transfer is only called to set idle_sp */ |
1602 |
if (expect_false (!prev)) |
1603 |
{ |
1604 |
cctx_current->idle_sp = STACKLEVEL; |
1605 |
assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1606 |
} |
1607 |
else if (expect_true (prev != next)) |
1608 |
{ |
1609 |
coro_cctx *cctx_prev; |
1610 |
|
1611 |
if (expect_false (prev->flags & CF_NEW)) |
1612 |
{ |
1613 |
/* create a new empty/source context */ |
1614 |
prev->flags &= ~CF_NEW; |
1615 |
prev->flags |= CF_RUNNING; |
1616 |
} |
1617 |
|
1618 |
prev->flags &= ~CF_RUNNING; |
1619 |
next->flags |= CF_RUNNING; |
1620 |
|
1621 |
/* first get rid of the old state */ |
1622 |
save_perl (aTHX_ prev); |
1623 |
|
1624 |
if (expect_false (next->flags & CF_NEW)) |
1625 |
{ |
1626 |
/* need to start coroutine */ |
1627 |
next->flags &= ~CF_NEW; |
1628 |
/* setup coroutine call */ |
1629 |
init_perl (aTHX_ next); |
1630 |
} |
1631 |
else |
1632 |
load_perl (aTHX_ next); |
1633 |
|
1634 |
/* possibly untie and reuse the cctx */ |
1635 |
if (expect_true ( |
1636 |
cctx_current->idle_sp == STACKLEVEL |
1637 |
&& !(cctx_current->flags & CC_TRACE) |
1638 |
&& !force_cctx |
1639 |
)) |
1640 |
{ |
1641 |
/* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
1642 |
assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); |
1643 |
|
1644 |
/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ |
1645 |
/* without this the next cctx_get might destroy the running cctx while still in use */ |
1646 |
if (expect_false (CCTX_EXPIRED (cctx_current))) |
1647 |
if (expect_true (!next->cctx)) |
1648 |
next->cctx = cctx_get (aTHX); |
1649 |
|
1650 |
cctx_put (cctx_current); |
1651 |
} |
1652 |
else |
1653 |
prev->cctx = cctx_current; |
1654 |
|
1655 |
++next->usecount; |
1656 |
|
1657 |
cctx_prev = cctx_current; |
1658 |
cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); |
1659 |
|
1660 |
next->cctx = 0; |
1661 |
|
1662 |
if (expect_false (cctx_prev != cctx_current)) |
1663 |
{ |
1664 |
cctx_prev->top_env = PL_top_env; |
1665 |
PL_top_env = cctx_current->top_env; |
1666 |
coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); |
1667 |
} |
1668 |
|
1669 |
transfer_tail (aTHX); |
1670 |
} |
1671 |
} |
1672 |
|
1673 |
#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
1674 |
#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
1675 |
|
1676 |
/** high level stuff ********************************************************/ |
1677 |
|
1678 |
static void |
1679 |
coro_state_destroy (pTHX_ struct coro *coro) |
1680 |
{ |
1681 |
if (coro->flags & CF_DESTROYED) |
1682 |
return; |
1683 |
|
1684 |
slf_destroy (aTHX_ coro); |
1685 |
|
1686 |
coro->flags |= CF_DESTROYED; |
1687 |
|
1688 |
if (coro->flags & CF_READY) |
1689 |
{ |
1690 |
/* reduce nready, as destroying a ready coro effectively unreadies it */ |
1691 |
/* alternative: look through all ready queues and remove the coro */ |
1692 |
--coro_nready; |
1693 |
} |
1694 |
else |
1695 |
coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
1696 |
|
1697 |
if (coro->mainstack |
1698 |
&& coro->mainstack != main_mainstack |
1699 |
&& coro->slot |
1700 |
&& !PL_dirty) |
1701 |
destroy_perl (aTHX_ coro); |
1702 |
|
1703 |
if (coro->next) coro->next->prev = coro->prev; |
1704 |
if (coro->prev) coro->prev->next = coro->next; |
1705 |
if (coro == coro_first) coro_first = coro->next; |
1706 |
|
1707 |
cctx_destroy (coro->cctx); |
1708 |
SvREFCNT_dec (coro->startcv); |
1709 |
SvREFCNT_dec (coro->args); |
1710 |
SvREFCNT_dec (coro->swap_sv); |
1711 |
SvREFCNT_dec (CORO_THROW); |
1712 |
} |
1713 |
|
1714 |
static int |
1715 |
coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
1716 |
{ |
1717 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1718 |
mg->mg_ptr = 0; |
1719 |
|
1720 |
coro->hv = 0; |
1721 |
|
1722 |
if (--coro->refcnt < 0) |
1723 |
{ |
1724 |
coro_state_destroy (aTHX_ coro); |
1725 |
Safefree (coro); |
1726 |
} |
1727 |
|
1728 |
return 0; |
1729 |
} |
1730 |
|
1731 |
static int |
1732 |
coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
1733 |
{ |
1734 |
struct coro *coro = (struct coro *)mg->mg_ptr; |
1735 |
|
1736 |
++coro->refcnt; |
1737 |
|
1738 |
return 0; |
1739 |
} |
1740 |
|
1741 |
static MGVTBL coro_state_vtbl = { |
1742 |
0, 0, 0, 0, |
1743 |
coro_state_free, |
1744 |
0, |
1745 |
#ifdef MGf_DUP |
1746 |
coro_state_dup, |
1747 |
#else |
1748 |
# define MGf_DUP 0 |
1749 |
#endif |
1750 |
}; |
1751 |
|
1752 |
static void |
1753 |
prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
1754 |
{ |
1755 |
ta->prev = SvSTATE (prev_sv); |
1756 |
ta->next = SvSTATE (next_sv); |
1757 |
TRANSFER_CHECK (*ta); |
1758 |
} |
1759 |
|
1760 |
static void |
1761 |
api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
1762 |
{ |
1763 |
struct coro_transfer_args ta; |
1764 |
|
1765 |
prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1766 |
TRANSFER (ta, 1); |
1767 |
} |
1768 |
|
1769 |
/** Coro ********************************************************************/ |
1770 |
|
1771 |
INLINE void |
1772 |
coro_enq (pTHX_ struct coro *coro) |
1773 |
{ |
1774 |
struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN]; |
1775 |
|
1776 |
SvREFCNT_inc_NN (coro->hv); |
1777 |
|
1778 |
coro->next_ready = 0; |
1779 |
*(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro; |
1780 |
ready [1] = coro; |
1781 |
} |
1782 |
|
1783 |
INLINE struct coro * |
1784 |
coro_deq (pTHX) |
1785 |
{ |
1786 |
int prio; |
1787 |
|
1788 |
for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; ) |
1789 |
{ |
1790 |
struct coro **ready = coro_ready [prio]; |
1791 |
|
1792 |
if (ready [0]) |
1793 |
{ |
1794 |
struct coro *coro = ready [0]; |
1795 |
ready [0] = coro->next_ready; |
1796 |
return coro; |
1797 |
} |
1798 |
} |
1799 |
|
1800 |
return 0; |
1801 |
} |
1802 |
|
1803 |
static void |
1804 |
invoke_sv_ready_hook_helper (void) |
1805 |
{ |
1806 |
dTHX; |
1807 |
dSP; |
1808 |
|
1809 |
ENTER; |
1810 |
SAVETMPS; |
1811 |
|
1812 |
PUSHMARK (SP); |
1813 |
PUTBACK; |
1814 |
call_sv (coro_readyhook, G_VOID | G_DISCARD); |
1815 |
|
1816 |
FREETMPS; |
1817 |
LEAVE; |
1818 |
} |
1819 |
|
1820 |
static int |
1821 |
api_ready (pTHX_ SV *coro_sv) |
1822 |
{ |
1823 |
struct coro *coro = SvSTATE (coro_sv); |
1824 |
|
1825 |
if (coro->flags & CF_READY) |
1826 |
return 0; |
1827 |
|
1828 |
coro->flags |= CF_READY; |
1829 |
|
1830 |
coro_enq (aTHX_ coro); |
1831 |
|
1832 |
if (!coro_nready++) |
1833 |
if (coroapi.readyhook) |
1834 |
coroapi.readyhook (); |
1835 |
|
1836 |
return 1; |
1837 |
} |
1838 |
|
1839 |
static int |
1840 |
api_is_ready (pTHX_ SV *coro_sv) |
1841 |
{ |
1842 |
return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1843 |
} |
1844 |
|
1845 |
/* expects to own a reference to next->hv */ |
1846 |
INLINE void |
1847 |
prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) |
1848 |
{ |
1849 |
SV *prev_sv = SvRV (coro_current); |
1850 |
|
1851 |
ta->prev = SvSTATE_hv (prev_sv); |
1852 |
ta->next = next; |
1853 |
|
1854 |
TRANSFER_CHECK (*ta); |
1855 |
|
1856 |
SvRV_set (coro_current, (SV *)next->hv); |
1857 |
|
1858 |
free_coro_mortal (aTHX); |
1859 |
coro_mortal = prev_sv; |
1860 |
} |
1861 |
|
1862 |
static void |
1863 |
prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
1864 |
{ |
1865 |
for (;;) |
1866 |
{ |
1867 |
struct coro *next = coro_deq (aTHX); |
1868 |
|
1869 |
if (expect_true (next)) |
1870 |
{ |
1871 |
/* cannot transfer to destroyed coros, skip and look for next */ |
1872 |
if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED))) |
1873 |
SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */ |
1874 |
else |
1875 |
{ |
1876 |
next->flags &= ~CF_READY; |
1877 |
--coro_nready; |
1878 |
|
1879 |
prepare_schedule_to (aTHX_ ta, next); |
1880 |
break; |
1881 |
} |
1882 |
} |
1883 |
else |
1884 |
{ |
1885 |
/* nothing to schedule: call the idle handler */ |
1886 |
if (SvROK (sv_idle) |
1887 |
&& SvOBJECT (SvRV (sv_idle))) |
1888 |
{ |
1889 |
if (SvRV (sv_idle) == SvRV (coro_current)) |
1890 |
croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught"); |
1891 |
|
1892 |
++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ |
1893 |
api_ready (aTHX_ SvRV (sv_idle)); |
1894 |
--coro_nready; |
1895 |
} |
1896 |
else |
1897 |
{ |
1898 |
/* TODO: deprecated, remove, cannot work reliably *//*D*/ |
1899 |
dSP; |
1900 |
|
1901 |
ENTER; |
1902 |
SAVETMPS; |
1903 |
|
1904 |
PUSHMARK (SP); |
1905 |
PUTBACK; |
1906 |
call_sv (sv_idle, G_VOID | G_DISCARD); |
1907 |
|
1908 |
FREETMPS; |
1909 |
LEAVE; |
1910 |
} |
1911 |
} |
1912 |
} |
1913 |
} |
1914 |
|
1915 |
INLINE void |
1916 |
prepare_cede (pTHX_ struct coro_transfer_args *ta) |
1917 |
{ |
1918 |
api_ready (aTHX_ coro_current); |
1919 |
prepare_schedule (aTHX_ ta); |
1920 |
} |
1921 |
|
1922 |
INLINE void |
1923 |
prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
1924 |
{ |
1925 |
SV *prev = SvRV (coro_current); |
1926 |
|
1927 |
if (coro_nready) |
1928 |
{ |
1929 |
prepare_schedule (aTHX_ ta); |
1930 |
api_ready (aTHX_ prev); |
1931 |
} |
1932 |
else |
1933 |
prepare_nop (aTHX_ ta); |
1934 |
} |
1935 |
|
1936 |
static void |
1937 |
api_schedule (pTHX) |
1938 |
{ |
1939 |
struct coro_transfer_args ta; |
1940 |
|
1941 |
prepare_schedule (aTHX_ &ta); |
1942 |
TRANSFER (ta, 1); |
1943 |
} |
1944 |
|
1945 |
static void |
1946 |
api_schedule_to (pTHX_ SV *coro_sv) |
1947 |
{ |
1948 |
struct coro_transfer_args ta; |
1949 |
struct coro *next = SvSTATE (coro_sv); |
1950 |
|
1951 |
SvREFCNT_inc_NN (coro_sv); |
1952 |
prepare_schedule_to (aTHX_ &ta, next); |
1953 |
} |
1954 |
|
1955 |
static int |
1956 |
api_cede (pTHX) |
1957 |
{ |
1958 |
struct coro_transfer_args ta; |
1959 |
|
1960 |
prepare_cede (aTHX_ &ta); |
1961 |
|
1962 |
if (expect_true (ta.prev != ta.next)) |
1963 |
{ |
1964 |
TRANSFER (ta, 1); |
1965 |
return 1; |
1966 |
} |
1967 |
else |
1968 |
return 0; |
1969 |
} |
1970 |
|
1971 |
static int |
1972 |
api_cede_notself (pTHX) |
1973 |
{ |
1974 |
if (coro_nready) |
1975 |
{ |
1976 |
struct coro_transfer_args ta; |
1977 |
|
1978 |
prepare_cede_notself (aTHX_ &ta); |
1979 |
TRANSFER (ta, 1); |
1980 |
return 1; |
1981 |
} |
1982 |
else |
1983 |
return 0; |
1984 |
} |
1985 |
|
1986 |
static void |
1987 |
api_trace (pTHX_ SV *coro_sv, int flags) |
1988 |
{ |
1989 |
struct coro *coro = SvSTATE (coro_sv); |
1990 |
|
1991 |
if (coro->flags & CF_RUNNING) |
1992 |
croak ("cannot enable tracing on a running coroutine, caught"); |
1993 |
|
1994 |
if (flags & CC_TRACE) |
1995 |
{ |
1996 |
if (!coro->cctx) |
1997 |
coro->cctx = cctx_new_run (); |
1998 |
else if (!(coro->cctx->flags & CC_TRACE)) |
1999 |
croak ("cannot enable tracing on coroutine with custom stack, caught"); |
2000 |
|
2001 |
coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
2002 |
} |
2003 |
else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
2004 |
{ |
2005 |
coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
2006 |
|
2007 |
if (coro->flags & CF_RUNNING) |
2008 |
PL_runops = RUNOPS_DEFAULT; |
2009 |
else |
2010 |
coro->slot->runops = RUNOPS_DEFAULT; |
2011 |
} |
2012 |
} |
2013 |
|
2014 |
static void |
2015 |
coro_call_on_destroy (pTHX_ struct coro *coro) |
2016 |
{ |
2017 |
SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); |
2018 |
|
2019 |
if (on_destroyp) |
2020 |
{ |
2021 |
SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0); |
2022 |
AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp))); |
2023 |
AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0; |
2024 |
|
2025 |
while (AvFILLp (on_destroy) >= 0) |
2026 |
{ |
2027 |
dSP; /* don't disturb outer sp */ |
2028 |
SV *cb = av_pop (on_destroy); |
2029 |
|
2030 |
PUSHMARK (SP); |
2031 |
|
2032 |
if (statusp) |
2033 |
{ |
2034 |
int i; |
2035 |
EXTEND (SP, AvFILLp (status) + 1); |
2036 |
|
2037 |
for (i = 0; i <= AvFILLp (status); ++i) |
2038 |
PUSHs (AvARRAY (status)[i]); |
2039 |
} |
2040 |
|
2041 |
PUTBACK; |
2042 |
call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); |
2043 |
} |
2044 |
} |
2045 |
} |
2046 |
|
2047 |
static void |
2048 |
coro_set_status (pTHX_ HV *coro_hv, SV **arg, int items) |
2049 |
{ |
2050 |
AV *av = newAV (); |
2051 |
|
2052 |
/* items are actually not so common, so optimise for this case */ |
2053 |
if (items) |
2054 |
{ |
2055 |
int i; |
2056 |
|
2057 |
av_extend (av, items - 1); |
2058 |
|
2059 |
for (i = 0; i < items; ++i) |
2060 |
av_push (av, SvREFCNT_inc_NN (arg [i])); |
2061 |
} |
2062 |
|
2063 |
hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); |
2064 |
} |
2065 |
|
2066 |
static void |
2067 |
slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv) |
2068 |
{ |
2069 |
av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */ |
2070 |
api_ready (aTHX_ sv_manager); |
2071 |
|
2072 |
frame->prepare = prepare_schedule; |
2073 |
frame->check = slf_check_repeat; |
2074 |
|
2075 |
/* as a minor optimisation, we could unwind all stacks here */ |
2076 |
/* but that puts extra pressure on pp_slf, and is not worth much */ |
2077 |
/*coro_unwind_stacks (aTHX);*/ |
2078 |
} |
2079 |
|
2080 |
static void |
2081 |
slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2082 |
{ |
2083 |
HV *coro_hv = (HV *)SvRV (coro_current); |
2084 |
|
2085 |
coro_set_status (aTHX_ coro_hv, arg, items); |
2086 |
slf_init_terminate_cancel_common (aTHX_ frame, coro_hv); |
2087 |
} |
2088 |
|
2089 |
static void |
2090 |
slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2091 |
{ |
2092 |
HV *coro_hv; |
2093 |
struct coro *coro; |
2094 |
|
2095 |
if (items <= 0) |
2096 |
croak ("Coro::cancel called without coro object,"); |
2097 |
|
2098 |
coro = SvSTATE (arg [0]); |
2099 |
coro_hv = coro->hv; |
2100 |
|
2101 |
coro_set_status (aTHX_ coro_hv, arg + 1, items - 1); |
2102 |
|
2103 |
if (expect_false (coro->flags & CF_NOCANCEL)) |
2104 |
{ |
2105 |
/* coro currently busy cancelling something, so just notify it */ |
2106 |
coro->slf_frame.data = (void *)coro; |
2107 |
|
2108 |
frame->prepare = prepare_nop; |
2109 |
frame->check = slf_check_nop; |
2110 |
} |
2111 |
else if (coro_hv == (HV *)SvRV (coro_current)) |
2112 |
{ |
2113 |
/* cancelling the current coro is allowed, and equals terminate */ |
2114 |
slf_init_terminate_cancel_common (aTHX_ frame, coro_hv); |
2115 |
} |
2116 |
else |
2117 |
{ |
2118 |
struct coro *self = SvSTATE_current; |
2119 |
|
2120 |
/* otherwise we cancel directly, purely for speed reasons |
2121 |
* unfortunately, this requires some magic trickery, as |
2122 |
* somebody else could cancel us, so we have to fight the cancellation. |
2123 |
* this is ugly, and hopefully fully worth the extra speed. |
2124 |
* besides, I can't get the slow-but-safe version working... |
2125 |
*/ |
2126 |
slf_frame.data = 0; |
2127 |
self->flags |= CF_NOCANCEL; |
2128 |
|
2129 |
coro_state_destroy (aTHX_ coro); |
2130 |
coro_call_on_destroy (aTHX_ coro); |
2131 |
|
2132 |
self->flags &= ~CF_NOCANCEL; |
2133 |
|
2134 |
if (slf_frame.data) |
2135 |
{ |
2136 |
/* while we were busy we have been cancelled, so terminate */ |
2137 |
slf_init_terminate_cancel_common (aTHX_ frame, self->hv); |
2138 |
} |
2139 |
else |
2140 |
{ |
2141 |
frame->prepare = prepare_nop; |
2142 |
frame->check = slf_check_nop; |
2143 |
} |
2144 |
} |
2145 |
} |
2146 |
|
2147 |
static int |
2148 |
slf_check_safe_cancel (pTHX_ struct CoroSLF *frame) |
2149 |
{ |
2150 |
frame->prepare = 0; |
2151 |
coro_unwind_stacks (aTHX); |
2152 |
|
2153 |
slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current)); |
2154 |
|
2155 |
return 1; |
2156 |
} |
2157 |
|
2158 |
static int |
2159 |
safe_cancel (pTHX_ struct coro *coro, SV **arg, int items) |
2160 |
{ |
2161 |
if (coro->cctx) |
2162 |
croak ("coro inside C callback, unable to cancel at this time, caught"); |
2163 |
|
2164 |
if (coro->flags & CF_NEW) |
2165 |
{ |
2166 |
coro_set_status (aTHX_ coro->hv, arg, items); |
2167 |
coro_state_destroy (aTHX_ coro); |
2168 |
coro_call_on_destroy (aTHX_ coro); |
2169 |
} |
2170 |
else |
2171 |
{ |
2172 |
if (!coro->slf_frame.prepare) |
2173 |
croak ("coro outside an SLF function, unable to cancel at this time, caught"); |
2174 |
|
2175 |
slf_destroy (aTHX_ coro); |
2176 |
|
2177 |
coro_set_status (aTHX_ coro->hv, arg, items); |
2178 |
coro->slf_frame.prepare = prepare_nop; |
2179 |
coro->slf_frame.check = slf_check_safe_cancel; |
2180 |
|
2181 |
api_ready (aTHX_ coro->hv); |
2182 |
} |
2183 |
|
2184 |
return 1; |
2185 |
} |
2186 |
|
2187 |
/*****************************************************************************/ |
2188 |
/* async pool handler */ |
2189 |
|
2190 |
static int |
2191 |
slf_check_pool_handler (pTHX_ struct CoroSLF *frame) |
2192 |
{ |
2193 |
HV *hv = (HV *)SvRV (coro_current); |
2194 |
struct coro *coro = (struct coro *)frame->data; |
2195 |
|
2196 |
if (!coro->invoke_cb) |
2197 |
return 1; /* loop till we have invoke */ |
2198 |
else |
2199 |
{ |
2200 |
hv_store (hv, "desc", sizeof ("desc") - 1, |
2201 |
newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
2202 |
|
2203 |
coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
2204 |
|
2205 |
{ |
2206 |
dSP; |
2207 |
XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0; |
2208 |
PUTBACK; |
2209 |
} |
2210 |
|
2211 |
SvREFCNT_dec (GvAV (PL_defgv)); |
2212 |
GvAV (PL_defgv) = coro->invoke_av; |
2213 |
coro->invoke_av = 0; |
2214 |
|
2215 |
return 0; |
2216 |
} |
2217 |
} |
2218 |
|
2219 |
static void |
2220 |
slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2221 |
{ |
2222 |
HV *hv = (HV *)SvRV (coro_current); |
2223 |
struct coro *coro = SvSTATE_hv ((SV *)hv); |
2224 |
|
2225 |
if (expect_true (coro->saved_deffh)) |
2226 |
{ |
2227 |
/* subsequent iteration */ |
2228 |
SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
2229 |
coro->saved_deffh = 0; |
2230 |
|
2231 |
if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
2232 |
|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
2233 |
{ |
2234 |
slf_init_terminate_cancel_common (aTHX_ frame, hv); |
2235 |
return; |
2236 |
} |
2237 |
else |
2238 |
{ |
2239 |
av_clear (GvAV (PL_defgv)); |
2240 |
hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); |
2241 |
|
2242 |
coro->prio = 0; |
2243 |
|
2244 |
if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
2245 |
api_trace (aTHX_ coro_current, 0); |
2246 |
|
2247 |
frame->prepare = prepare_schedule; |
2248 |
av_push (av_async_pool, SvREFCNT_inc (hv)); |
2249 |
} |
2250 |
} |
2251 |
else |
2252 |
{ |
2253 |
/* first iteration, simply fall through */ |
2254 |
frame->prepare = prepare_nop; |
2255 |
} |
2256 |
|
2257 |
frame->check = slf_check_pool_handler; |
2258 |
frame->data = (void *)coro; |
2259 |
} |
2260 |
|
2261 |
/*****************************************************************************/ |
2262 |
/* rouse callback */ |
2263 |
|
2264 |
#define CORO_MAGIC_type_rouse PERL_MAGIC_ext |
2265 |
|
2266 |
static void |
2267 |
coro_rouse_callback (pTHX_ CV *cv) |
2268 |
{ |
2269 |
dXSARGS; |
2270 |
SV *data = (SV *)S_GENSUB_ARG; |
2271 |
|
2272 |
if (SvTYPE (SvRV (data)) != SVt_PVAV) |
2273 |
{ |
2274 |
/* first call, set args */ |
2275 |
SV *coro = SvRV (data); |
2276 |
AV *av = newAV (); |
2277 |
|
2278 |
SvRV_set (data, (SV *)av); |
2279 |
|
2280 |
/* better take a full copy of the arguments */ |
2281 |
while (items--) |
2282 |
av_store (av, items, newSVsv (ST (items))); |
2283 |
|
2284 |
api_ready (aTHX_ coro); |
2285 |
SvREFCNT_dec (coro); |
2286 |
} |
2287 |
|
2288 |
XSRETURN_EMPTY; |
2289 |
} |
2290 |
|
2291 |
static int |
2292 |
slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) |
2293 |
{ |
2294 |
SV *data = (SV *)frame->data; |
2295 |
|
2296 |
if (CORO_THROW) |
2297 |
return 0; |
2298 |
|
2299 |
if (SvTYPE (SvRV (data)) != SVt_PVAV) |
2300 |
return 1; |
2301 |
|
2302 |
/* now push all results on the stack */ |
2303 |
{ |
2304 |
dSP; |
2305 |
AV *av = (AV *)SvRV (data); |
2306 |
int i; |
2307 |
|
2308 |
EXTEND (SP, AvFILLp (av) + 1); |
2309 |
for (i = 0; i <= AvFILLp (av); ++i) |
2310 |
PUSHs (sv_2mortal (AvARRAY (av)[i])); |
2311 |
|
2312 |
/* we have stolen the elements, so set length to zero and free */ |
2313 |
AvFILLp (av) = -1; |
2314 |
av_undef (av); |
2315 |
|
2316 |
PUTBACK; |
2317 |
} |
2318 |
|
2319 |
return 0; |
2320 |
} |
2321 |
|
2322 |
static void |
2323 |
slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2324 |
{ |
2325 |
SV *cb; |
2326 |
|
2327 |
if (items) |
2328 |
cb = arg [0]; |
2329 |
else |
2330 |
{ |
2331 |
struct coro *coro = SvSTATE_current; |
2332 |
|
2333 |
if (!coro->rouse_cb) |
2334 |
croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,"); |
2335 |
|
2336 |
cb = sv_2mortal (coro->rouse_cb); |
2337 |
coro->rouse_cb = 0; |
2338 |
} |
2339 |
|
2340 |
if (!SvROK (cb) |
2341 |
|| SvTYPE (SvRV (cb)) != SVt_PVCV |
2342 |
|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) |
2343 |
croak ("Coro::rouse_wait called with illegal callback argument,"); |
2344 |
|
2345 |
{ |
2346 |
CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */ |
2347 |
SV *data = (SV *)S_GENSUB_ARG; |
2348 |
|
2349 |
frame->data = (void *)data; |
2350 |
frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; |
2351 |
frame->check = slf_check_rouse_wait; |
2352 |
} |
2353 |
} |
2354 |
|
2355 |
static SV * |
2356 |
coro_new_rouse_cb (pTHX) |
2357 |
{ |
2358 |
HV *hv = (HV *)SvRV (coro_current); |
2359 |
struct coro *coro = SvSTATE_hv (hv); |
2360 |
SV *data = newRV_inc ((SV *)hv); |
2361 |
SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data); |
2362 |
|
2363 |
sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); |
2364 |
SvREFCNT_dec (data); /* magicext increases the refcount */ |
2365 |
|
2366 |
SvREFCNT_dec (coro->rouse_cb); |
2367 |
coro->rouse_cb = SvREFCNT_inc_NN (cb); |
2368 |
|
2369 |
return cb; |
2370 |
} |
2371 |
|
2372 |
/*****************************************************************************/ |
2373 |
/* schedule-like-function opcode (SLF) */ |
2374 |
|
2375 |
static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
2376 |
static const CV *slf_cv; |
2377 |
static SV **slf_argv; |
2378 |
static int slf_argc, slf_arga; /* count, allocated */ |
2379 |
static I32 slf_ax; /* top of stack, for restore */ |
2380 |
|
2381 |
/* this restores the stack in the case we patched the entersub, to */ |
2382 |
/* recreate the stack frame as perl will on following calls */ |
2383 |
/* since entersub cleared the stack */ |
2384 |
static OP * |
2385 |
pp_restore (pTHX) |
2386 |
{ |
2387 |
int i; |
2388 |
SV **SP = PL_stack_base + slf_ax; |
2389 |
|
2390 |
PUSHMARK (SP); |
2391 |
|
2392 |
EXTEND (SP, slf_argc + 1); |
2393 |
|
2394 |
for (i = 0; i < slf_argc; ++i) |
2395 |
PUSHs (sv_2mortal (slf_argv [i])); |
2396 |
|
2397 |
PUSHs ((SV *)CvGV (slf_cv)); |
2398 |
|
2399 |
RETURNOP (slf_restore.op_first); |
2400 |
} |
2401 |
|
2402 |
static void |
2403 |
slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
2404 |
{ |
2405 |
SV **arg = (SV **)slf_frame.data; |
2406 |
|
2407 |
prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
2408 |
} |
2409 |
|
2410 |
static void |
2411 |
slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2412 |
{ |
2413 |
if (items != 2) |
2414 |
croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
2415 |
|
2416 |
frame->prepare = slf_prepare_transfer; |
2417 |
frame->check = slf_check_nop; |
2418 |
frame->data = (void *)arg; /* let's hope it will stay valid */ |
2419 |
} |
2420 |
|
2421 |
static void |
2422 |
slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2423 |
{ |
2424 |
frame->prepare = prepare_schedule; |
2425 |
frame->check = slf_check_nop; |
2426 |
} |
2427 |
|
2428 |
static void |
2429 |
slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta) |
2430 |
{ |
2431 |
struct coro *next = (struct coro *)slf_frame.data; |
2432 |
|
2433 |
SvREFCNT_inc_NN (next->hv); |
2434 |
prepare_schedule_to (aTHX_ ta, next); |
2435 |
} |
2436 |
|
2437 |
static void |
2438 |
slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2439 |
{ |
2440 |
if (!items) |
2441 |
croak ("Coro::schedule_to expects a coroutine argument, caught"); |
2442 |
|
2443 |
frame->data = (void *)SvSTATE (arg [0]); |
2444 |
frame->prepare = slf_prepare_schedule_to; |
2445 |
frame->check = slf_check_nop; |
2446 |
} |
2447 |
|
2448 |
static void |
2449 |
slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2450 |
{ |
2451 |
api_ready (aTHX_ SvRV (coro_current)); |
2452 |
|
2453 |
slf_init_schedule_to (aTHX_ frame, cv, arg, items); |
2454 |
} |
2455 |
|
2456 |
static void |
2457 |
slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2458 |
{ |
2459 |
frame->prepare = prepare_cede; |
2460 |
frame->check = slf_check_nop; |
2461 |
} |
2462 |
|
2463 |
static void |
2464 |
slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2465 |
{ |
2466 |
frame->prepare = prepare_cede_notself; |
2467 |
frame->check = slf_check_nop; |
2468 |
} |
2469 |
|
2470 |
/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */ |
2471 |
static void |
2472 |
slf_destroy (pTHX_ struct coro *coro) |
2473 |
{ |
2474 |
/* this callback is reserved for slf functions needing to do cleanup */ |
2475 |
if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty) |
2476 |
coro->slf_frame.destroy (aTHX_ coro); |
2477 |
|
2478 |
/* |
2479 |
* The on_destroy above most likely is from an SLF call. |
2480 |
* Since by definition the SLF call will not finish when we destroy |
2481 |
* the coro, we will have to force-finish it here, otherwise |
2482 |
* cleanup functions cannot call SLF functions. |
2483 |
*/ |
2484 |
coro->slf_frame.prepare = 0; |
2485 |
} |
2486 |
|
2487 |
/* |
2488 |
* these not obviously related functions are all rolled into one |
2489 |
* function to increase chances that they all will call transfer with the same |
2490 |
* stack offset |
2491 |
* SLF stands for "schedule-like-function". |
2492 |
*/ |
2493 |
static OP * |
2494 |
pp_slf (pTHX) |
2495 |
{ |
2496 |
I32 checkmark; /* mark SP to see how many elements check has pushed */ |
2497 |
|
2498 |
/* set up the slf frame, unless it has already been set-up */ |
2499 |
/* the latter happens when a new coro has been started */ |
2500 |
/* or when a new cctx was attached to an existing coroutine */ |
2501 |
if (expect_true (!slf_frame.prepare)) |
2502 |
{ |
2503 |
/* first iteration */ |
2504 |
dSP; |
2505 |
SV **arg = PL_stack_base + TOPMARK + 1; |
2506 |
int items = SP - arg; /* args without function object */ |
2507 |
SV *gv = *sp; |
2508 |
|
2509 |
/* do a quick consistency check on the "function" object, and if it isn't */ |
2510 |
/* for us, divert to the real entersub */ |
2511 |
if (SvTYPE (gv) != SVt_PVGV |
2512 |
|| !GvCV (gv) |
2513 |
|| !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
2514 |
return PL_ppaddr[OP_ENTERSUB](aTHX); |
2515 |
|
2516 |
if (!(PL_op->op_flags & OPf_STACKED)) |
2517 |
{ |
2518 |
/* ampersand-form of call, use @_ instead of stack */ |
2519 |
AV *av = GvAV (PL_defgv); |
2520 |
arg = AvARRAY (av); |
2521 |
items = AvFILLp (av) + 1; |
2522 |
} |
2523 |
|
2524 |
/* now call the init function, which needs to set up slf_frame */ |
2525 |
((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
2526 |
(aTHX_ &slf_frame, GvCV (gv), arg, items); |
2527 |
|
2528 |
/* pop args */ |
2529 |
SP = PL_stack_base + POPMARK; |
2530 |
|
2531 |
PUTBACK; |
2532 |
} |
2533 |
|
2534 |
/* now that we have a slf_frame, interpret it! */ |
2535 |
/* we use a callback system not to make the code needlessly */ |
2536 |
/* complicated, but so we can run multiple perl coros from one cctx */ |
2537 |
|
2538 |
do |
2539 |
{ |
2540 |
struct coro_transfer_args ta; |
2541 |
|
2542 |
slf_frame.prepare (aTHX_ &ta); |
2543 |
TRANSFER (ta, 0); |
2544 |
|
2545 |
checkmark = PL_stack_sp - PL_stack_base; |
2546 |
} |
2547 |
while (slf_frame.check (aTHX_ &slf_frame)); |
2548 |
|
2549 |
slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ |
2550 |
|
2551 |
/* exception handling */ |
2552 |
if (expect_false (CORO_THROW)) |
2553 |
{ |
2554 |
SV *exception = sv_2mortal (CORO_THROW); |
2555 |
|
2556 |
CORO_THROW = 0; |
2557 |
sv_setsv (ERRSV, exception); |
2558 |
croak (0); |
2559 |
} |
2560 |
|
2561 |
/* return value handling - mostly like entersub */ |
2562 |
/* make sure we put something on the stack in scalar context */ |
2563 |
if (GIMME_V == G_SCALAR) |
2564 |
{ |
2565 |
dSP; |
2566 |
SV **bot = PL_stack_base + checkmark; |
2567 |
|
2568 |
if (sp == bot) /* too few, push undef */ |
2569 |
bot [1] = &PL_sv_undef; |
2570 |
else if (sp != bot + 1) /* too many, take last one */ |
2571 |
bot [1] = *sp; |
2572 |
|
2573 |
SP = bot + 1; |
2574 |
|
2575 |
PUTBACK; |
2576 |
} |
2577 |
|
2578 |
return NORMAL; |
2579 |
} |
2580 |
|
2581 |
static void |
2582 |
api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax) |
2583 |
{ |
2584 |
int i; |
2585 |
SV **arg = PL_stack_base + ax; |
2586 |
int items = PL_stack_sp - arg + 1; |
2587 |
|
2588 |
assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
2589 |
|
2590 |
if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
2591 |
&& PL_op->op_ppaddr != pp_slf) |
2592 |
croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
2593 |
|
2594 |
CvFLAGS (cv) |= CVf_SLF; |
2595 |
CvXSUBANY (cv).any_ptr = (void *)init_cb; |
2596 |
slf_cv = cv; |
2597 |
|
2598 |
/* we patch the op, and then re-run the whole call */ |
2599 |
/* we have to put the same argument on the stack for this to work */ |
2600 |
/* and this will be done by pp_restore */ |
2601 |
slf_restore.op_next = (OP *)&slf_restore; |
2602 |
slf_restore.op_type = OP_CUSTOM; |
2603 |
slf_restore.op_ppaddr = pp_restore; |
2604 |
slf_restore.op_first = PL_op; |
2605 |
|
2606 |
slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */ |
2607 |
|
2608 |
if (PL_op->op_flags & OPf_STACKED) |
2609 |
{ |
2610 |
if (items > slf_arga) |
2611 |
{ |
2612 |
slf_arga = items; |
2613 |
Safefree (slf_argv); |
2614 |
New (0, slf_argv, slf_arga, SV *); |
2615 |
} |
2616 |
|
2617 |
slf_argc = items; |
2618 |
|
2619 |
for (i = 0; i < items; ++i) |
2620 |
slf_argv [i] = SvREFCNT_inc (arg [i]); |
2621 |
} |
2622 |
else |
2623 |
slf_argc = 0; |
2624 |
|
2625 |
PL_op->op_ppaddr = pp_slf; |
2626 |
/*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */ |
2627 |
|
2628 |
PL_op = (OP *)&slf_restore; |
2629 |
} |
2630 |
|
2631 |
/*****************************************************************************/ |
2632 |
/* dynamic wind */ |
2633 |
|
2634 |
static void |
2635 |
on_enterleave_call (pTHX_ SV *cb) |
2636 |
{ |
2637 |
dSP; |
2638 |
|
2639 |
PUSHSTACK; |
2640 |
|
2641 |
PUSHMARK (SP); |
2642 |
PUTBACK; |
2643 |
call_sv (cb, G_VOID | G_DISCARD); |
2644 |
SPAGAIN; |
2645 |
|
2646 |
POPSTACK; |
2647 |
} |
2648 |
|
2649 |
static SV * |
2650 |
coro_avp_pop_and_free (pTHX_ AV **avp) |
2651 |
{ |
2652 |
AV *av = *avp; |
2653 |
SV *res = av_pop (av); |
2654 |
|
2655 |
if (AvFILLp (av) < 0) |
2656 |
{ |
2657 |
*avp = 0; |
2658 |
SvREFCNT_dec (av); |
2659 |
} |
2660 |
|
2661 |
return res; |
2662 |
} |
2663 |
|
2664 |
static void |
2665 |
coro_pop_on_enter (pTHX_ void *coro) |
2666 |
{ |
2667 |
SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter); |
2668 |
SvREFCNT_dec (cb); |
2669 |
} |
2670 |
|
2671 |
static void |
2672 |
coro_pop_on_leave (pTHX_ void *coro) |
2673 |
{ |
2674 |
SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave); |
2675 |
on_enterleave_call (aTHX_ sv_2mortal (cb)); |
2676 |
} |
2677 |
|
2678 |
/*****************************************************************************/ |
2679 |
/* PerlIO::cede */ |
2680 |
|
2681 |
typedef struct |
2682 |
{ |
2683 |
PerlIOBuf base; |
2684 |
NV next, every; |
2685 |
} PerlIOCede; |
2686 |
|
2687 |
static IV |
2688 |
PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
2689 |
{ |
2690 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
2691 |
|
2692 |
self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
2693 |
self->next = nvtime () + self->every; |
2694 |
|
2695 |
return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
2696 |
} |
2697 |
|
2698 |
static SV * |
2699 |
PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
2700 |
{ |
2701 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
2702 |
|
2703 |
return newSVnv (self->every); |
2704 |
} |
2705 |
|
2706 |
static IV |
2707 |
PerlIOCede_flush (pTHX_ PerlIO *f) |
2708 |
{ |
2709 |
PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
2710 |
double now = nvtime (); |
2711 |
|
2712 |
if (now >= self->next) |
2713 |
{ |
2714 |
api_cede (aTHX); |
2715 |
self->next = now + self->every; |
2716 |
} |
2717 |
|
2718 |
return PerlIOBuf_flush (aTHX_ f); |
2719 |
} |
2720 |
|
2721 |
static PerlIO_funcs PerlIO_cede = |
2722 |
{ |
2723 |
sizeof(PerlIO_funcs), |
2724 |
"cede", |
2725 |
sizeof(PerlIOCede), |
2726 |
PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
2727 |
PerlIOCede_pushed, |
2728 |
PerlIOBuf_popped, |
2729 |
PerlIOBuf_open, |
2730 |
PerlIOBase_binmode, |
2731 |
PerlIOCede_getarg, |
2732 |
PerlIOBase_fileno, |
2733 |
PerlIOBuf_dup, |
2734 |
PerlIOBuf_read, |
2735 |
PerlIOBuf_unread, |
2736 |
PerlIOBuf_write, |
2737 |
PerlIOBuf_seek, |
2738 |
PerlIOBuf_tell, |
2739 |
PerlIOBuf_close, |
2740 |
PerlIOCede_flush, |
2741 |
PerlIOBuf_fill, |
2742 |
PerlIOBase_eof, |
2743 |
PerlIOBase_error, |
2744 |
PerlIOBase_clearerr, |
2745 |
PerlIOBase_setlinebuf, |
2746 |
PerlIOBuf_get_base, |
2747 |
PerlIOBuf_bufsiz, |
2748 |
PerlIOBuf_get_ptr, |
2749 |
PerlIOBuf_get_cnt, |
2750 |
PerlIOBuf_set_ptrcnt, |
2751 |
}; |
2752 |
|
2753 |
/*****************************************************************************/ |
2754 |
/* Coro::Semaphore & Coro::Signal */ |
2755 |
|
2756 |
static SV * |
2757 |
coro_waitarray_new (pTHX_ int count) |
2758 |
{ |
2759 |
/* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
2760 |
AV *av = newAV (); |
2761 |
SV **ary; |
2762 |
|
2763 |
/* unfortunately, building manually saves memory */ |
2764 |
Newx (ary, 2, SV *); |
2765 |
AvALLOC (av) = ary; |
2766 |
#if PERL_VERSION_ATLEAST (5,10,0) |
2767 |
AvARRAY (av) = ary; |
2768 |
#else |
2769 |
/* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */ |
2770 |
/* -DDEBUGGING flags this as a bug, despite it perfectly working */ |
2771 |
SvPVX ((SV *)av) = (char *)ary; |
2772 |
#endif |
2773 |
AvMAX (av) = 1; |
2774 |
AvFILLp (av) = 0; |
2775 |
ary [0] = newSViv (count); |
2776 |
|
2777 |
return newRV_noinc ((SV *)av); |
2778 |
} |
2779 |
|
2780 |
/* semaphore */ |
2781 |
|
2782 |
static void |
2783 |
coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
2784 |
{ |
2785 |
SV *count_sv = AvARRAY (av)[0]; |
2786 |
IV count = SvIVX (count_sv); |
2787 |
|
2788 |
count += adjust; |
2789 |
SvIVX (count_sv) = count; |
2790 |
|
2791 |
/* now wake up as many waiters as are expected to lock */ |
2792 |
while (count > 0 && AvFILLp (av) > 0) |
2793 |
{ |
2794 |
SV *cb; |
2795 |
|
2796 |
/* swap first two elements so we can shift a waiter */ |
2797 |
AvARRAY (av)[0] = AvARRAY (av)[1]; |
2798 |
AvARRAY (av)[1] = count_sv; |
2799 |
cb = av_shift (av); |
2800 |
|
2801 |
if (SvOBJECT (cb)) |
2802 |
{ |
2803 |
api_ready (aTHX_ cb); |
2804 |
--count; |
2805 |
} |
2806 |
else if (SvTYPE (cb) == SVt_PVCV) |
2807 |
{ |
2808 |
dSP; |
2809 |
PUSHMARK (SP); |
2810 |
XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
2811 |
PUTBACK; |
2812 |
call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
2813 |
} |
2814 |
|
2815 |
SvREFCNT_dec (cb); |
2816 |
} |
2817 |
} |
2818 |
|
2819 |
static void |
2820 |
coro_semaphore_destroy (pTHX_ struct coro *coro) |
2821 |
{ |
2822 |
/* call $sem->adjust (0) to possibly wake up some other waiters */ |
2823 |
coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); |
2824 |
} |
2825 |
|
2826 |
static int |
2827 |
slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) |
2828 |
{ |
2829 |
AV *av = (AV *)frame->data; |
2830 |
SV *count_sv = AvARRAY (av)[0]; |
2831 |
|
2832 |
/* if we are about to throw, don't actually acquire the lock, just throw */ |
2833 |
if (CORO_THROW) |
2834 |
return 0; |
2835 |
else if (SvIVX (count_sv) > 0) |
2836 |
{ |
2837 |
frame->destroy = 0; |
2838 |
|
2839 |
if (acquire) |
2840 |
SvIVX (count_sv) = SvIVX (count_sv) - 1; |
2841 |
else |
2842 |
coro_semaphore_adjust (aTHX_ av, 0); |
2843 |
|
2844 |
return 0; |
2845 |
} |
2846 |
else |
2847 |
{ |
2848 |
int i; |
2849 |
/* if we were woken up but can't down, we look through the whole */ |
2850 |
/* waiters list and only add us if we aren't in there already */ |
2851 |
/* this avoids some degenerate memory usage cases */ |
2852 |
|
2853 |
for (i = 1; i <= AvFILLp (av); ++i) |
2854 |
if (AvARRAY (av)[i] == SvRV (coro_current)) |
2855 |
return 1; |
2856 |
|
2857 |
av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
2858 |
return 1; |
2859 |
} |
2860 |
} |
2861 |
|
2862 |
static int |
2863 |
slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
2864 |
{ |
2865 |
return slf_check_semaphore_down_or_wait (aTHX_ frame, 1); |
2866 |
} |
2867 |
|
2868 |
static int |
2869 |
slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame) |
2870 |
{ |
2871 |
return slf_check_semaphore_down_or_wait (aTHX_ frame, 0); |
2872 |
} |
2873 |
|
2874 |
static void |
2875 |
slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2876 |
{ |
2877 |
AV *av = (AV *)SvRV (arg [0]); |
2878 |
|
2879 |
if (SvIVX (AvARRAY (av)[0]) > 0) |
2880 |
{ |
2881 |
frame->data = (void *)av; |
2882 |
frame->prepare = prepare_nop; |
2883 |
} |
2884 |
else |
2885 |
{ |
2886 |
av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
2887 |
|
2888 |
frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
2889 |
frame->prepare = prepare_schedule; |
2890 |
/* to avoid race conditions when a woken-up coro gets terminated */ |
2891 |
/* we arrange for a temporary on_destroy that calls adjust (0) */ |
2892 |
frame->destroy = coro_semaphore_destroy; |
2893 |
} |
2894 |
} |
2895 |
|
2896 |
static void |
2897 |
slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2898 |
{ |
2899 |
slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
2900 |
frame->check = slf_check_semaphore_down; |
2901 |
} |
2902 |
|
2903 |
static void |
2904 |
slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2905 |
{ |
2906 |
if (items >= 2) |
2907 |
{ |
2908 |
/* callback form */ |
2909 |
AV *av = (AV *)SvRV (arg [0]); |
2910 |
SV *cb_cv = s_get_cv_croak (arg [1]); |
2911 |
|
2912 |
av_push (av, SvREFCNT_inc_NN (cb_cv)); |
2913 |
|
2914 |
if (SvIVX (AvARRAY (av)[0]) > 0) |
2915 |
coro_semaphore_adjust (aTHX_ av, 0); |
2916 |
|
2917 |
frame->prepare = prepare_nop; |
2918 |
frame->check = slf_check_nop; |
2919 |
} |
2920 |
else |
2921 |
{ |
2922 |
slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
2923 |
frame->check = slf_check_semaphore_wait; |
2924 |
} |
2925 |
} |
2926 |
|
2927 |
/* signal */ |
2928 |
|
2929 |
static void |
2930 |
coro_signal_wake (pTHX_ AV *av, int count) |
2931 |
{ |
2932 |
SvIVX (AvARRAY (av)[0]) = 0; |
2933 |
|
2934 |
/* now signal count waiters */ |
2935 |
while (count > 0 && AvFILLp (av) > 0) |
2936 |
{ |
2937 |
SV *cb; |
2938 |
|
2939 |
/* swap first two elements so we can shift a waiter */ |
2940 |
cb = AvARRAY (av)[0]; |
2941 |
AvARRAY (av)[0] = AvARRAY (av)[1]; |
2942 |
AvARRAY (av)[1] = cb; |
2943 |
|
2944 |
cb = av_shift (av); |
2945 |
|
2946 |
if (SvTYPE (cb) == SVt_PVCV) |
2947 |
{ |
2948 |
dSP; |
2949 |
PUSHMARK (SP); |
2950 |
XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
2951 |
PUTBACK; |
2952 |
call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
2953 |
} |
2954 |
else |
2955 |
{ |
2956 |
api_ready (aTHX_ cb); |
2957 |
sv_setiv (cb, 0); /* signal waiter */ |
2958 |
} |
2959 |
|
2960 |
SvREFCNT_dec (cb); |
2961 |
|
2962 |
--count; |
2963 |
} |
2964 |
} |
2965 |
|
2966 |
static int |
2967 |
slf_check_signal_wait (pTHX_ struct CoroSLF *frame) |
2968 |
{ |
2969 |
/* if we are about to throw, also stop waiting */ |
2970 |
return SvROK ((SV *)frame->data) && !CORO_THROW; |
2971 |
} |
2972 |
|
2973 |
static void |
2974 |
slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
2975 |
{ |
2976 |
AV *av = (AV *)SvRV (arg [0]); |
2977 |
|
2978 |
if (items >= 2) |
2979 |
{ |
2980 |
SV *cb_cv = s_get_cv_croak (arg [1]); |
2981 |
av_push (av, SvREFCNT_inc_NN (cb_cv)); |
2982 |
|
2983 |
if (SvIVX (AvARRAY (av)[0])) |
2984 |
coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */ |
2985 |
|
2986 |
frame->prepare = prepare_nop; |
2987 |
frame->check = slf_check_nop; |
2988 |
} |
2989 |
else if (SvIVX (AvARRAY (av)[0])) |
2990 |
{ |
2991 |
SvIVX (AvARRAY (av)[0]) = 0; |
2992 |
frame->prepare = prepare_nop; |
2993 |
frame->check = slf_check_nop; |
2994 |
} |
2995 |
else |
2996 |
{ |
2997 |
SV *waiter = newSVsv (coro_current); /* owned by signal av */ |
2998 |
|
2999 |
av_push (av, waiter); |
3000 |
|
3001 |
frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ |
3002 |
frame->prepare = prepare_schedule; |
3003 |
frame->check = slf_check_signal_wait; |
3004 |
} |
3005 |
} |
3006 |
|
3007 |
/*****************************************************************************/ |
3008 |
/* Coro::AIO */ |
3009 |
|
3010 |
#define CORO_MAGIC_type_aio PERL_MAGIC_ext |
3011 |
|
3012 |
/* helper storage struct */ |
3013 |
struct io_state |
3014 |
{ |
3015 |
int errorno; |
3016 |
I32 laststype; /* U16 in 5.10.0 */ |
3017 |
int laststatval; |
3018 |
Stat_t statcache; |
3019 |
}; |
3020 |
|
3021 |
static void |
3022 |
coro_aio_callback (pTHX_ CV *cv) |
3023 |
{ |
3024 |
dXSARGS; |
3025 |
AV *state = (AV *)S_GENSUB_ARG; |
3026 |
SV *coro = av_pop (state); |
3027 |
SV *data_sv = newSV (sizeof (struct io_state)); |
3028 |
|
3029 |
av_extend (state, items - 1); |
3030 |
|
3031 |
sv_upgrade (data_sv, SVt_PV); |
3032 |
SvCUR_set (data_sv, sizeof (struct io_state)); |
3033 |
SvPOK_only (data_sv); |
3034 |
|
3035 |
{ |
3036 |
struct io_state *data = (struct io_state *)SvPVX (data_sv); |
3037 |
|
3038 |
data->errorno = errno; |
3039 |
data->laststype = PL_laststype; |
3040 |
data->laststatval = PL_laststatval; |
3041 |
data->statcache = PL_statcache; |
3042 |
} |
3043 |
|
3044 |
/* now build the result vector out of all the parameters and the data_sv */ |
3045 |
{ |
3046 |
int i; |
3047 |
|
3048 |
for (i = 0; i < items; ++i) |
3049 |
av_push (state, SvREFCNT_inc_NN (ST (i))); |
3050 |
} |
3051 |
|
3052 |
av_push (state, data_sv); |
3053 |
|
3054 |
api_ready (aTHX_ coro); |
3055 |
SvREFCNT_dec (coro); |
3056 |
SvREFCNT_dec ((AV *)state); |
3057 |
} |
3058 |
|
3059 |
static int |
3060 |
slf_check_aio_req (pTHX_ struct CoroSLF *frame) |
3061 |
{ |
3062 |
AV *state = (AV *)frame->data; |
3063 |
|
3064 |
/* if we are about to throw, return early */ |
3065 |
/* this does not cancel the aio request, but at least */ |
3066 |
/* it quickly returns */ |
3067 |
if (CORO_THROW) |
3068 |
return 0; |
3069 |
|
3070 |
/* one element that is an RV? repeat! */ |
3071 |
if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) |
3072 |
return 1; |
3073 |
|
3074 |
/* restore status */ |
3075 |
{ |
3076 |
SV *data_sv = av_pop (state); |
3077 |
struct io_state *data = (struct io_state *)SvPVX (data_sv); |
3078 |
|
3079 |
errno = data->errorno; |
3080 |
PL_laststype = data->laststype; |
3081 |
PL_laststatval = data->laststatval; |
3082 |
PL_statcache = data->statcache; |
3083 |
|
3084 |
SvREFCNT_dec (data_sv); |
3085 |
} |
3086 |
|
3087 |
/* push result values */ |
3088 |
{ |
3089 |
dSP; |
3090 |
int i; |
3091 |
|
3092 |
EXTEND (SP, AvFILLp (state) + 1); |
3093 |
for (i = 0; i <= AvFILLp (state); ++i) |
3094 |
PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i]))); |
3095 |
|
3096 |
PUTBACK; |
3097 |
} |
3098 |
|
3099 |
return 0; |
3100 |
} |
3101 |
|
3102 |
static void |
3103 |
slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
3104 |
{ |
3105 |
AV *state = (AV *)sv_2mortal ((SV *)newAV ()); |
3106 |
SV *coro_hv = SvRV (coro_current); |
3107 |
struct coro *coro = SvSTATE_hv (coro_hv); |
3108 |
|
3109 |
/* put our coroutine id on the state arg */ |
3110 |
av_push (state, SvREFCNT_inc_NN (coro_hv)); |
3111 |
|
3112 |
/* first see whether we have a non-zero priority and set it as AIO prio */ |
3113 |
if (coro->prio) |
3114 |
{ |
3115 |
dSP; |
3116 |
|
3117 |
static SV *prio_cv; |
3118 |
static SV *prio_sv; |
3119 |
|
3120 |
if (expect_false (!prio_cv)) |
3121 |
{ |
3122 |
prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); |
3123 |
prio_sv = newSViv (0); |
3124 |
} |
3125 |
|
3126 |
PUSHMARK (SP); |
3127 |
sv_setiv (prio_sv, coro->prio); |
3128 |
XPUSHs (prio_sv); |
3129 |
|
3130 |
PUTBACK; |
3131 |
call_sv (prio_cv, G_VOID | G_DISCARD); |
3132 |
} |
3133 |
|
3134 |
/* now call the original request */ |
3135 |
{ |
3136 |
dSP; |
3137 |
CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj; |
3138 |
int i; |
3139 |
|
3140 |
PUSHMARK (SP); |
3141 |
|
3142 |
/* first push all args to the stack */ |
3143 |
EXTEND (SP, items + 1); |
3144 |
|
3145 |
for (i = 0; i < items; ++i) |
3146 |
PUSHs (arg [i]); |
3147 |
|
3148 |
/* now push the callback closure */ |
3149 |
PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); |
3150 |
|
3151 |
/* now call the AIO function - we assume our request is uncancelable */ |
3152 |
PUTBACK; |
3153 |
call_sv ((SV *)req, G_VOID | G_DISCARD); |
3154 |
} |
3155 |
|
3156 |
/* now that the request is going, we loop till we have a result */ |
3157 |
frame->data = (void *)state; |
3158 |
frame->prepare = prepare_schedule; |
3159 |
frame->check = slf_check_aio_req; |
3160 |
} |
3161 |
|
3162 |
static void |
3163 |
coro_aio_req_xs (pTHX_ CV *cv) |
3164 |
{ |
3165 |
dXSARGS; |
3166 |
|
3167 |
CORO_EXECUTE_SLF_XS (slf_init_aio_req); |
3168 |
|
3169 |
XSRETURN_EMPTY; |
3170 |
} |
3171 |
|
3172 |
/*****************************************************************************/ |
3173 |
|
3174 |
#if CORO_CLONE |
3175 |
# include "clone.c" |
3176 |
#endif |
3177 |
|
3178 |
/*****************************************************************************/ |
3179 |
|
3180 |
static SV * |
3181 |
coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro) |
3182 |
{ |
3183 |
SV *coro_sv; |
3184 |
struct coro *coro; |
3185 |
MAGIC *mg; |
3186 |
HV *hv; |
3187 |
SV *cb; |
3188 |
int i; |
3189 |
|
3190 |
if (argc > 0) |
3191 |
{ |
3192 |
cb = s_get_cv_croak (argv [0]); |
3193 |
|
3194 |
if (!is_coro) |
3195 |
{ |
3196 |
if (CvISXSUB (cb)) |
3197 |
croak ("Coro::State doesn't support XS functions as coroutine start, caught"); |
3198 |
|
3199 |
if (!CvROOT (cb)) |
3200 |
croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught"); |
3201 |
} |
3202 |
} |
3203 |
|
3204 |
Newz (0, coro, 1, struct coro); |
3205 |
coro->args = newAV (); |
3206 |
coro->flags = CF_NEW; |
3207 |
|
3208 |
if (coro_first) coro_first->prev = coro; |
3209 |
coro->next = coro_first; |
3210 |
coro_first = coro; |
3211 |
|
3212 |
coro->hv = hv = newHV (); |
3213 |
mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
3214 |
mg->mg_flags |= MGf_DUP; |
3215 |
coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash); |
3216 |
|
3217 |
if (argc > 0) |
3218 |
{ |
3219 |
av_extend (coro->args, argc + is_coro - 1); |
3220 |
|
3221 |
if (is_coro) |
3222 |
{ |
3223 |
av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb)); |
3224 |
cb = (SV *)cv_coro_run; |
3225 |
} |
3226 |
|
3227 |
coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb); |
3228 |
|
3229 |
for (i = 1; i < argc; i++) |
3230 |
av_push (coro->args, newSVsv (argv [i])); |
3231 |
} |
3232 |
|
3233 |
return coro_sv; |
3234 |
} |
3235 |
|
3236 |
MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
3237 |
|
3238 |
PROTOTYPES: DISABLE |
3239 |
|
3240 |
BOOT: |
3241 |
{ |
3242 |
#ifdef USE_ITHREADS |
3243 |
# if CORO_PTHREAD |
3244 |
coro_thx = PERL_GET_CONTEXT; |
3245 |
# endif |
3246 |
#endif |
3247 |
BOOT_PAGESIZE; |
3248 |
|
3249 |
cctx_current = cctx_new_empty (); |
3250 |
|
3251 |
irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
3252 |
stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
3253 |
|
3254 |
orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
3255 |
orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
3256 |
orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
3257 |
|
3258 |
hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
3259 |
rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
3260 |
rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
3261 |
|
3262 |
coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
3263 |
|
3264 |
newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
3265 |
newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
3266 |
newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
3267 |
newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
3268 |
|
3269 |
main_mainstack = PL_mainstack; |
3270 |
main_top_env = PL_top_env; |
3271 |
|
3272 |
while (main_top_env->je_prev) |
3273 |
main_top_env = main_top_env->je_prev; |
3274 |
|
3275 |
{ |
3276 |
SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); |
3277 |
|
3278 |
if (!PL_custom_op_names) PL_custom_op_names = newHV (); |
3279 |
hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0); |
3280 |
|
3281 |
if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); |
3282 |
hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0); |
3283 |
} |
3284 |
|
3285 |
coroapi.ver = CORO_API_VERSION; |
3286 |
coroapi.rev = CORO_API_REVISION; |
3287 |
|
3288 |
coroapi.transfer = api_transfer; |
3289 |
|
3290 |
coroapi.sv_state = SvSTATE_; |
3291 |
coroapi.execute_slf = api_execute_slf; |
3292 |
coroapi.prepare_nop = prepare_nop; |
3293 |
coroapi.prepare_schedule = prepare_schedule; |
3294 |
coroapi.prepare_cede = prepare_cede; |
3295 |
coroapi.prepare_cede_notself = prepare_cede_notself; |
3296 |
|
3297 |
time_init (aTHX); |
3298 |
|
3299 |
assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL)); |
3300 |
} |
3301 |
|
3302 |
SV * |
3303 |
new (SV *klass, ...) |
3304 |
ALIAS: |
3305 |
Coro::new = 1 |
3306 |
CODE: |
3307 |
RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix); |
3308 |
OUTPUT: |
3309 |
RETVAL |
3310 |
|
3311 |
void |
3312 |
transfer (...) |
3313 |
PROTOTYPE: $$ |
3314 |
CODE: |
3315 |
CORO_EXECUTE_SLF_XS (slf_init_transfer); |
3316 |
|
3317 |
void |
3318 |
_exit (int code) |
3319 |
PROTOTYPE: $ |
3320 |
CODE: |
3321 |
_exit (code); |
3322 |
|
3323 |
SV * |
3324 |
clone (Coro::State coro) |
3325 |
CODE: |
3326 |
{ |
3327 |
#if CORO_CLONE |
3328 |
struct coro *ncoro = coro_clone (aTHX_ coro); |
3329 |
MAGIC *mg; |
3330 |
/* TODO: too much duplication */ |
3331 |
ncoro->hv = newHV (); |
3332 |
mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0); |
3333 |
mg->mg_flags |= MGf_DUP; |
3334 |
RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv)); |
3335 |
#else |
3336 |
croak ("Coro::State->clone has not been configured into this installation of Coro, realised"); |
3337 |
#endif |
3338 |
} |
3339 |
OUTPUT: |
3340 |
RETVAL |
3341 |
|
3342 |
int |
3343 |
cctx_stacksize (int new_stacksize = 0) |
3344 |
PROTOTYPE: ;$ |
3345 |
CODE: |
3346 |
RETVAL = cctx_stacksize; |
3347 |
if (new_stacksize) |
3348 |
{ |
3349 |
cctx_stacksize = new_stacksize; |
3350 |
++cctx_gen; |
3351 |
} |
3352 |
OUTPUT: |
3353 |
RETVAL |
3354 |
|
3355 |
int |
3356 |
cctx_max_idle (int max_idle = 0) |
3357 |
PROTOTYPE: ;$ |
3358 |
CODE: |
3359 |
RETVAL = cctx_max_idle; |
3360 |
if (max_idle > 1) |
3361 |
cctx_max_idle = max_idle; |
3362 |
OUTPUT: |
3363 |
RETVAL |
3364 |
|
3365 |
int |
3366 |
cctx_count () |
3367 |
PROTOTYPE: |
3368 |
CODE: |
3369 |
RETVAL = cctx_count; |
3370 |
OUTPUT: |
3371 |
RETVAL |
3372 |
|
3373 |
int |
3374 |
cctx_idle () |
3375 |
PROTOTYPE: |
3376 |
CODE: |
3377 |
RETVAL = cctx_idle; |
3378 |
OUTPUT: |
3379 |
RETVAL |
3380 |
|
3381 |
void |
3382 |
list () |
3383 |
PROTOTYPE: |
3384 |
PPCODE: |
3385 |
{ |
3386 |
struct coro *coro; |
3387 |
for (coro = coro_first; coro; coro = coro->next) |
3388 |
if (coro->hv) |
3389 |
XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
3390 |
} |
3391 |
|
3392 |
void |
3393 |
call (Coro::State coro, SV *coderef) |
3394 |
ALIAS: |
3395 |
eval = 1 |
3396 |
CODE: |
3397 |
{ |
3398 |
if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
3399 |
{ |
3400 |
struct coro *current = SvSTATE_current; |
3401 |
struct CoroSLF slf_save; |
3402 |
|
3403 |
if (current != coro) |
3404 |
{ |
3405 |
PUTBACK; |
3406 |
save_perl (aTHX_ current); |
3407 |
load_perl (aTHX_ coro); |
3408 |
/* the coro is most likely in an active SLF call. |
3409 |
* while not strictly required (the code we execute is |
3410 |
* not allowed to call any SLF functions), it's cleaner |
3411 |
* to reinitialise the slf_frame and restore it later. |
3412 |
* This might one day allow us to actually do SLF calls |
3413 |
* from code executed here. |
3414 |
*/ |
3415 |
slf_save = slf_frame; |
3416 |
slf_frame.prepare = 0; |
3417 |
SPAGAIN; |
3418 |
} |
3419 |
|
3420 |
PUSHSTACK; |
3421 |
|
3422 |
PUSHMARK (SP); |
3423 |
PUTBACK; |
3424 |
|
3425 |
if (ix) |
3426 |
eval_sv (coderef, 0); |
3427 |
else |
3428 |
call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
3429 |
|
3430 |
POPSTACK; |
3431 |
SPAGAIN; |
3432 |
|
3433 |
if (current != coro) |
3434 |
{ |
3435 |
PUTBACK; |
3436 |
slf_frame = slf_save; |
3437 |
save_perl (aTHX_ coro); |
3438 |
load_perl (aTHX_ current); |
3439 |
SPAGAIN; |
3440 |
} |
3441 |
} |
3442 |
} |
3443 |
|
3444 |
SV * |
3445 |
is_ready (Coro::State coro) |
3446 |
PROTOTYPE: $ |
3447 |
ALIAS: |
3448 |
is_ready = CF_READY |
3449 |
is_running = CF_RUNNING |
3450 |
is_new = CF_NEW |
3451 |
is_destroyed = CF_DESTROYED |
3452 |
is_suspended = CF_SUSPENDED |
3453 |
CODE: |
3454 |
RETVAL = boolSV (coro->flags & ix); |
3455 |
OUTPUT: |
3456 |
RETVAL |
3457 |
|
3458 |
void |
3459 |
throw (Coro::State self, SV *exception = &PL_sv_undef) |
3460 |
PROTOTYPE: $;$ |
3461 |
CODE: |
3462 |
{ |
3463 |
struct coro *current = SvSTATE_current; |
3464 |
SV **exceptionp = self == current ? &CORO_THROW : &self->except; |
3465 |
SvREFCNT_dec (*exceptionp); |
3466 |
SvGETMAGIC (exception); |
3467 |
*exceptionp = SvOK (exception) ? newSVsv (exception) : 0; |
3468 |
} |
3469 |
|
3470 |
void |
3471 |
api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
3472 |
PROTOTYPE: $;$ |
3473 |
C_ARGS: aTHX_ coro, flags |
3474 |
|
3475 |
SV * |
3476 |
has_cctx (Coro::State coro) |
3477 |
PROTOTYPE: $ |
3478 |
CODE: |
3479 |
/* maybe manage the running flag differently */ |
3480 |
RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING)); |
3481 |
OUTPUT: |
3482 |
RETVAL |
3483 |
|
3484 |
int |
3485 |
is_traced (Coro::State coro) |
3486 |
PROTOTYPE: $ |
3487 |
CODE: |
3488 |
RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
3489 |
OUTPUT: |
3490 |
RETVAL |
3491 |
|
3492 |
UV |
3493 |
rss (Coro::State coro) |
3494 |
PROTOTYPE: $ |
3495 |
ALIAS: |
3496 |
usecount = 1 |
3497 |
CODE: |
3498 |
switch (ix) |
3499 |
{ |
3500 |
case 0: RETVAL = coro_rss (aTHX_ coro); break; |
3501 |
case 1: RETVAL = coro->usecount; break; |
3502 |
} |
3503 |
OUTPUT: |
3504 |
RETVAL |
3505 |
|
3506 |
void |
3507 |
force_cctx () |
3508 |
PROTOTYPE: |
3509 |
CODE: |
3510 |
cctx_current->idle_sp = 0; |
3511 |
|
3512 |
void |
3513 |
swap_defsv (Coro::State self) |
3514 |
PROTOTYPE: $ |
3515 |
ALIAS: |
3516 |
swap_defav = 1 |
3517 |
CODE: |
3518 |
if (!self->slot) |
3519 |
croak ("cannot swap state with coroutine that has no saved state,"); |
3520 |
else |
3521 |
{ |
3522 |
SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
3523 |
SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
3524 |
|
3525 |
SV *tmp = *src; *src = *dst; *dst = tmp; |
3526 |
} |
3527 |
|
3528 |
void |
3529 |
cancel (Coro::State self) |
3530 |
CODE: |
3531 |
coro_state_destroy (aTHX_ self); |
3532 |
|
3533 |
SV * |
3534 |
enable_times (int enabled = enable_times) |
3535 |
CODE: |
3536 |
{ |
3537 |
RETVAL = boolSV (enable_times); |
3538 |
|
3539 |
if (enabled != enable_times) |
3540 |
{ |
3541 |
enable_times = enabled; |
3542 |
|
3543 |
coro_times_update (); |
3544 |
(enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current)); |
3545 |
} |
3546 |
} |
3547 |
OUTPUT: |
3548 |
RETVAL |
3549 |
|
3550 |
void |
3551 |
times (Coro::State self) |
3552 |
PPCODE: |
3553 |
{ |
3554 |
struct coro *current = SvSTATE (coro_current); |
3555 |
|
3556 |
if (expect_false (current == self)) |
3557 |
{ |
3558 |
coro_times_update (); |
3559 |
coro_times_add (SvSTATE (coro_current)); |
3560 |
} |
3561 |
|
3562 |
EXTEND (SP, 2); |
3563 |
PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9))); |
3564 |
PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9))); |
3565 |
|
3566 |
if (expect_false (current == self)) |
3567 |
coro_times_sub (SvSTATE (coro_current)); |
3568 |
} |
3569 |
|
3570 |
void |
3571 |
swap_sv (Coro::State coro, SV *sv, SV *swapsv) |
3572 |
CODE: |
3573 |
{ |
3574 |
struct coro *current = SvSTATE_current; |
3575 |
|
3576 |
if (current == coro) |
3577 |
SWAP_SVS (current); |
3578 |
|
3579 |
if (!coro->swap_sv) |
3580 |
coro->swap_sv = newAV (); |
3581 |
|
3582 |
av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv ))); |
3583 |
av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv))); |
3584 |
|
3585 |
if (current == coro) |
3586 |
SWAP_SVS (current); |
3587 |
} |
3588 |
|
3589 |
|
3590 |
MODULE = Coro::State PACKAGE = Coro |
3591 |
|
3592 |
BOOT: |
3593 |
{ |
3594 |
sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
3595 |
sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
3596 |
cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD); |
3597 |
coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); |
3598 |
av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
3599 |
av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); |
3600 |
sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); |
3601 |
sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); |
3602 |
|
3603 |
sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); |
3604 |
sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); |
3605 |
cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); |
3606 |
CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */ |
3607 |
|
3608 |
coro_stash = gv_stashpv ("Coro", TRUE); |
3609 |
|
3610 |
newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX)); |
3611 |
newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH)); |
3612 |
newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL)); |
3613 |
newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW)); |
3614 |
newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE)); |
3615 |
newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN)); |
3616 |
|
3617 |
{ |
3618 |
SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
3619 |
|
3620 |
coroapi.schedule = api_schedule; |
3621 |
coroapi.schedule_to = api_schedule_to; |
3622 |
coroapi.cede = api_cede; |
3623 |
coroapi.cede_notself = api_cede_notself; |
3624 |
coroapi.ready = api_ready; |
3625 |
coroapi.is_ready = api_is_ready; |
3626 |
coroapi.nready = coro_nready; |
3627 |
coroapi.current = coro_current; |
3628 |
|
3629 |
/*GCoroAPI = &coroapi;*/ |
3630 |
sv_setiv (sv, (IV)&coroapi); |
3631 |
SvREADONLY_on (sv); |
3632 |
} |
3633 |
} |
3634 |
|
3635 |
SV * |
3636 |
async (...) |
3637 |
PROTOTYPE: &@ |
3638 |
CODE: |
3639 |
RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1); |
3640 |
api_ready (aTHX_ RETVAL); |
3641 |
OUTPUT: |
3642 |
RETVAL |
3643 |
|
3644 |
void |
3645 |
_destroy (Coro::State coro) |
3646 |
CODE: |
3647 |
/* used by the manager thread */ |
3648 |
coro_state_destroy (aTHX_ coro); |
3649 |
coro_call_on_destroy (aTHX_ coro); |
3650 |
|
3651 |
void |
3652 |
terminate (...) |
3653 |
CODE: |
3654 |
CORO_EXECUTE_SLF_XS (slf_init_terminate); |
3655 |
|
3656 |
void |
3657 |
cancel (...) |
3658 |
CODE: |
3659 |
CORO_EXECUTE_SLF_XS (slf_init_cancel); |
3660 |
|
3661 |
int |
3662 |
safe_cancel (Coro::State self, ...) |
3663 |
C_ARGS: aTHX_ self, &ST (1), items - 1 |
3664 |
|
3665 |
void |
3666 |
schedule (...) |
3667 |
CODE: |
3668 |
CORO_EXECUTE_SLF_XS (slf_init_schedule); |
3669 |
|
3670 |
void |
3671 |
schedule_to (...) |
3672 |
CODE: |
3673 |
CORO_EXECUTE_SLF_XS (slf_init_schedule_to); |
3674 |
|
3675 |
void |
3676 |
cede_to (...) |
3677 |
CODE: |
3678 |
CORO_EXECUTE_SLF_XS (slf_init_cede_to); |
3679 |
|
3680 |
void |
3681 |
cede (...) |
3682 |
CODE: |
3683 |
CORO_EXECUTE_SLF_XS (slf_init_cede); |
3684 |
|
3685 |
void |
3686 |
cede_notself (...) |
3687 |
CODE: |
3688 |
CORO_EXECUTE_SLF_XS (slf_init_cede_notself); |
3689 |
|
3690 |
void |
3691 |
_set_current (SV *current) |
3692 |
PROTOTYPE: $ |
3693 |
CODE: |
3694 |
SvREFCNT_dec (SvRV (coro_current)); |
3695 |
SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
3696 |
|
3697 |
void |
3698 |
_set_readyhook (SV *hook) |
3699 |
PROTOTYPE: $ |
3700 |
CODE: |
3701 |
SvREFCNT_dec (coro_readyhook); |
3702 |
SvGETMAGIC (hook); |
3703 |
if (SvOK (hook)) |
3704 |
{ |
3705 |
coro_readyhook = newSVsv (hook); |
3706 |
CORO_READYHOOK = invoke_sv_ready_hook_helper; |
3707 |
} |
3708 |
else |
3709 |
{ |
3710 |
coro_readyhook = 0; |
3711 |
CORO_READYHOOK = 0; |
3712 |
} |
3713 |
|
3714 |
int |
3715 |
prio (Coro::State coro, int newprio = 0) |
3716 |
PROTOTYPE: $;$ |
3717 |
ALIAS: |
3718 |
nice = 1 |
3719 |
CODE: |
3720 |
{ |
3721 |
RETVAL = coro->prio; |
3722 |
|
3723 |
if (items > 1) |
3724 |
{ |
3725 |
if (ix) |
3726 |
newprio = coro->prio - newprio; |
3727 |
|
3728 |
if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN; |
3729 |
if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX; |
3730 |
|
3731 |
coro->prio = newprio; |
3732 |
} |
3733 |
} |
3734 |
OUTPUT: |
3735 |
RETVAL |
3736 |
|
3737 |
SV * |
3738 |
ready (SV *self) |
3739 |
PROTOTYPE: $ |
3740 |
CODE: |
3741 |
RETVAL = boolSV (api_ready (aTHX_ self)); |
3742 |
OUTPUT: |
3743 |
RETVAL |
3744 |
|
3745 |
int |
3746 |
nready (...) |
3747 |
PROTOTYPE: |
3748 |
CODE: |
3749 |
RETVAL = coro_nready; |
3750 |
OUTPUT: |
3751 |
RETVAL |
3752 |
|
3753 |
void |
3754 |
suspend (Coro::State self) |
3755 |
PROTOTYPE: $ |
3756 |
CODE: |
3757 |
self->flags |= CF_SUSPENDED; |
3758 |
|
3759 |
void |
3760 |
resume (Coro::State self) |
3761 |
PROTOTYPE: $ |
3762 |
CODE: |
3763 |
self->flags &= ~CF_SUSPENDED; |
3764 |
|
3765 |
void |
3766 |
_pool_handler (...) |
3767 |
CODE: |
3768 |
CORO_EXECUTE_SLF_XS (slf_init_pool_handler); |
3769 |
|
3770 |
void |
3771 |
async_pool (SV *cv, ...) |
3772 |
PROTOTYPE: &@ |
3773 |
PPCODE: |
3774 |
{ |
3775 |
HV *hv = (HV *)av_pop (av_async_pool); |
3776 |
AV *av = newAV (); |
3777 |
SV *cb = ST (0); |
3778 |
int i; |
3779 |
|
3780 |
av_extend (av, items - 2); |
3781 |
for (i = 1; i < items; ++i) |
3782 |
av_push (av, SvREFCNT_inc_NN (ST (i))); |
3783 |
|
3784 |
if ((SV *)hv == &PL_sv_undef) |
3785 |
{ |
3786 |
SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1); |
3787 |
hv = (HV *)SvREFCNT_inc_NN (SvRV (sv)); |
3788 |
SvREFCNT_dec (sv); |
3789 |
} |
3790 |
|
3791 |
{ |
3792 |
struct coro *coro = SvSTATE_hv (hv); |
3793 |
|
3794 |
assert (!coro->invoke_cb); |
3795 |
assert (!coro->invoke_av); |
3796 |
coro->invoke_cb = SvREFCNT_inc (cb); |
3797 |
coro->invoke_av = av; |
3798 |
} |
3799 |
|
3800 |
api_ready (aTHX_ (SV *)hv); |
3801 |
|
3802 |
if (GIMME_V != G_VOID) |
3803 |
XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); |
3804 |
else |
3805 |
SvREFCNT_dec (hv); |
3806 |
} |
3807 |
|
3808 |
SV * |
3809 |
rouse_cb () |
3810 |
PROTOTYPE: |
3811 |
CODE: |
3812 |
RETVAL = coro_new_rouse_cb (aTHX); |
3813 |
OUTPUT: |
3814 |
RETVAL |
3815 |
|
3816 |
void |
3817 |
rouse_wait (...) |
3818 |
PROTOTYPE: ;$ |
3819 |
PPCODE: |
3820 |
CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); |
3821 |
|
3822 |
void |
3823 |
on_enter (SV *block) |
3824 |
ALIAS: |
3825 |
on_leave = 1 |
3826 |
PROTOTYPE: & |
3827 |
CODE: |
3828 |
{ |
3829 |
struct coro *coro = SvSTATE_current; |
3830 |
AV **avp = ix ? &coro->on_leave : &coro->on_enter; |
3831 |
|
3832 |
block = s_get_cv_croak (block); |
3833 |
|
3834 |
if (!*avp) |
3835 |
*avp = newAV (); |
3836 |
|
3837 |
av_push (*avp, SvREFCNT_inc (block)); |
3838 |
|
3839 |
if (!ix) |
3840 |
on_enterleave_call (aTHX_ block); |
3841 |
|
3842 |
LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */ |
3843 |
SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro); |
3844 |
ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */ |
3845 |
} |
3846 |
|
3847 |
|
3848 |
MODULE = Coro::State PACKAGE = PerlIO::cede |
3849 |
|
3850 |
BOOT: |
3851 |
PerlIO_define_layer (aTHX_ &PerlIO_cede); |
3852 |
|
3853 |
|
3854 |
MODULE = Coro::State PACKAGE = Coro::Semaphore |
3855 |
|
3856 |
SV * |
3857 |
new (SV *klass, SV *count = 0) |
3858 |
CODE: |
3859 |
{ |
3860 |
int semcnt = 1; |
3861 |
|
3862 |
if (count) |
3863 |
{ |
3864 |
SvGETMAGIC (count); |
3865 |
|
3866 |
if (SvOK (count)) |
3867 |
semcnt = SvIV (count); |
3868 |
} |
3869 |
|
3870 |
RETVAL = sv_bless ( |
3871 |
coro_waitarray_new (aTHX_ semcnt), |
3872 |
GvSTASH (CvGV (cv)) |
3873 |
); |
3874 |
} |
3875 |
OUTPUT: |
3876 |
RETVAL |
3877 |
|
3878 |
# helper for Coro::Channel and others |
3879 |
SV * |
3880 |
_alloc (int count) |
3881 |
CODE: |
3882 |
RETVAL = coro_waitarray_new (aTHX_ count); |
3883 |
OUTPUT: |
3884 |
RETVAL |
3885 |
|
3886 |
SV * |
3887 |
count (SV *self) |
3888 |
CODE: |
3889 |
RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); |
3890 |
OUTPUT: |
3891 |
RETVAL |
3892 |
|
3893 |
void |
3894 |
up (SV *self, int adjust = 1) |
3895 |
ALIAS: |
3896 |
adjust = 1 |
3897 |
CODE: |
3898 |
coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); |
3899 |
|
3900 |
void |
3901 |
down (...) |
3902 |
CODE: |
3903 |
CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); |
3904 |
|
3905 |
void |
3906 |
wait (...) |
3907 |
CODE: |
3908 |
CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); |
3909 |
|
3910 |
void |
3911 |
try (SV *self) |
3912 |
PPCODE: |
3913 |
{ |
3914 |
AV *av = (AV *)SvRV (self); |
3915 |
SV *count_sv = AvARRAY (av)[0]; |
3916 |
IV count = SvIVX (count_sv); |
3917 |
|
3918 |
if (count > 0) |
3919 |
{ |
3920 |
--count; |
3921 |
SvIVX (count_sv) = count; |
3922 |
XSRETURN_YES; |
3923 |
} |
3924 |
else |
3925 |
XSRETURN_NO; |
3926 |
} |
3927 |
|
3928 |
void |
3929 |
waiters (SV *self) |
3930 |
PPCODE: |
3931 |
{ |
3932 |
AV *av = (AV *)SvRV (self); |
3933 |
int wcount = AvFILLp (av) + 1 - 1; |
3934 |
|
3935 |
if (GIMME_V == G_SCALAR) |
3936 |
XPUSHs (sv_2mortal (newSViv (wcount))); |
3937 |
else |
3938 |
{ |
3939 |
int i; |
3940 |
EXTEND (SP, wcount); |
3941 |
for (i = 1; i <= wcount; ++i) |
3942 |
PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); |
3943 |
} |
3944 |
} |
3945 |
|
3946 |
MODULE = Coro::State PACKAGE = Coro::SemaphoreSet |
3947 |
|
3948 |
void |
3949 |
_may_delete (SV *sem, int count, int extra_refs) |
3950 |
PPCODE: |
3951 |
{ |
3952 |
AV *av = (AV *)SvRV (sem); |
3953 |
|
3954 |
if (SvREFCNT ((SV *)av) == 1 + extra_refs |
3955 |
&& AvFILLp (av) == 0 /* no waiters, just count */ |
3956 |
&& SvIV (AvARRAY (av)[0]) == count) |
3957 |
XSRETURN_YES; |
3958 |
|
3959 |
XSRETURN_NO; |
3960 |
} |
3961 |
|
3962 |
MODULE = Coro::State PACKAGE = Coro::Signal |
3963 |
|
3964 |
SV * |
3965 |
new (SV *klass) |
3966 |
CODE: |
3967 |
RETVAL = sv_bless ( |
3968 |
coro_waitarray_new (aTHX_ 0), |
3969 |
GvSTASH (CvGV (cv)) |
3970 |
); |
3971 |
OUTPUT: |
3972 |
RETVAL |
3973 |
|
3974 |
void |
3975 |
wait (...) |
3976 |
CODE: |
3977 |
CORO_EXECUTE_SLF_XS (slf_init_signal_wait); |
3978 |
|
3979 |
void |
3980 |
broadcast (SV *self) |
3981 |
CODE: |
3982 |
{ |
3983 |
AV *av = (AV *)SvRV (self); |
3984 |
coro_signal_wake (aTHX_ av, AvFILLp (av)); |
3985 |
} |
3986 |
|
3987 |
void |
3988 |
send (SV *self) |
3989 |
CODE: |
3990 |
{ |
3991 |
AV *av = (AV *)SvRV (self); |
3992 |
|
3993 |
if (AvFILLp (av)) |
3994 |
coro_signal_wake (aTHX_ av, 1); |
3995 |
else |
3996 |
SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ |
3997 |
} |
3998 |
|
3999 |
IV |
4000 |
awaited (SV *self) |
4001 |
CODE: |
4002 |
RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; |
4003 |
OUTPUT: |
4004 |
RETVAL |
4005 |
|
4006 |
|
4007 |
MODULE = Coro::State PACKAGE = Coro::AnyEvent |
4008 |
|
4009 |
BOOT: |
4010 |
sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
4011 |
|
4012 |
void |
4013 |
_schedule (...) |
4014 |
CODE: |
4015 |
{ |
4016 |
static int incede; |
4017 |
|
4018 |
api_cede_notself (aTHX); |
4019 |
|
4020 |
++incede; |
4021 |
while (coro_nready >= incede && api_cede (aTHX)) |
4022 |
; |
4023 |
|
4024 |
sv_setsv (sv_activity, &PL_sv_undef); |
4025 |
if (coro_nready >= incede) |
4026 |
{ |
4027 |
PUSHMARK (SP); |
4028 |
PUTBACK; |
4029 |
call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
4030 |
} |
4031 |
|
4032 |
--incede; |
4033 |
} |
4034 |
|
4035 |
|
4036 |
MODULE = Coro::State PACKAGE = Coro::AIO |
4037 |
|
4038 |
void |
4039 |
_register (char *target, char *proto, SV *req) |
4040 |
CODE: |
4041 |
{ |
4042 |
SV *req_cv = s_get_cv_croak (req); |
4043 |
/* newXSproto doesn't return the CV on 5.8 */ |
4044 |
CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); |
4045 |
sv_setpv ((SV *)slf_cv, proto); |
4046 |
sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); |
4047 |
} |
4048 |
|
4049 |
MODULE = Coro::State PACKAGE = Coro::Select |
4050 |
|
4051 |
void |
4052 |
patch_pp_sselect () |
4053 |
CODE: |
4054 |
if (!coro_old_pp_sselect) |
4055 |
{ |
4056 |
coro_select_select = (SV *)get_cv ("Coro::Select::select", 0); |
4057 |
coro_old_pp_sselect = PL_ppaddr [OP_SSELECT]; |
4058 |
PL_ppaddr [OP_SSELECT] = coro_pp_sselect; |
4059 |
} |
4060 |
|
4061 |
void |
4062 |
unpatch_pp_sselect () |
4063 |
CODE: |
4064 |
if (coro_old_pp_sselect) |
4065 |
{ |
4066 |
PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect; |
4067 |
coro_old_pp_sselect = 0; |
4068 |
} |
4069 |
|