Commit | Line | Data |
68795e93 |
1 | #define PERL_NO_GET_CONTEXT |
2 | #include "EXTERN.h" |
3 | #include "perl.h" |
4 | #include "XSUB.h" |
5 | |
6 | #ifdef WIN32 |
7 | #include <windows.h> |
8 | #include <win32thread.h> |
9 | #define PERL_THREAD_SETSPECIFIC(k,v) TlsSetValue(k,v) |
10 | #define PERL_THREAD_GETSPECIFIC(k,v) v = TlsGetValue(k) |
11 | #define PERL_THREAD_ALLOC_SPECIFIC(k) \ |
12 | STMT_START {\ |
13 | if((k = TlsAlloc()) == TLS_OUT_OF_INDEXES) {\ |
14 | PerlIO_printf(PerlIO_stderr(),"panic threads.h: TlsAlloc");\ |
15 | exit(1);\ |
16 | }\ |
17 | } STMT_END |
18 | #else |
19 | #include <pthread.h> |
20 | #include <thread.h> |
21 | |
22 | #define PERL_THREAD_SETSPECIFIC(k,v) pthread_setspecific(k,v) |
23 | #ifdef OLD_PTHREADS_API |
24 | #define PERL_THREAD_DETACH(t) pthread_detach(&(t)) |
25 | #define PERL_THREAD_GETSPECIFIC(k,v) pthread_getspecific(k,&v) |
26 | #define PERL_THREAD_ALLOC_SPECIFIC(k) STMT_START {\ |
27 | if(pthread_keycreate(&(k),0)) {\ |
28 | PerlIO_printf(PerlIO_stderr(), "panic threads.h: pthread_key_create");\ |
29 | exit(1);\ |
30 | }\ |
31 | } STMT_END |
32 | #else |
33 | #define PERL_THREAD_DETACH(t) pthread_detach((t)) |
34 | #define PERL_THREAD_GETSPECIFIC(k,v) v = pthread_getspecific(k) |
35 | #define PERL_THREAD_ALLOC_SPECIFIC(k) STMT_START {\ |
36 | if(pthread_key_create(&(k),0)) {\ |
37 | PerlIO_printf(PerlIO_stderr(), "panic threads.h: pthread_key_create");\ |
38 | exit(1);\ |
39 | }\ |
40 | } STMT_END |
41 | #endif |
42 | #endif |
43 | |
44 | typedef struct ithread_s { |
45 | struct ithread_s *next; /* next thread in the list */ |
46 | struct ithread_s *prev; /* prev thread in the list */ |
47 | PerlInterpreter *interp; /* The threads interpreter */ |
48 | I32 tid; /* threads module's thread id */ |
49 | perl_mutex mutex; /* mutex for updating things in this struct */ |
50 | I32 count; /* how many SVs have a reference to us */ |
51 | signed char detached; /* are we detached ? */ |
a446a88f |
52 | int gimme; /* Context of create */ |
68795e93 |
53 | SV* init_function; /* Code to run */ |
54 | SV* params; /* args to pass function */ |
55 | #ifdef WIN32 |
56 | DWORD thr; /* OS's idea if thread id */ |
57 | HANDLE handle; /* OS's waitable handle */ |
58 | #else |
59 | pthread_t thr; /* OS's handle for the thread */ |
60 | #endif |
61 | } ithread; |
62 | |
63 | ithread *threads; |
64 | |
65 | /* Macros to supply the aTHX_ in an embed.h like manner */ |
66 | #define ithread_join(thread) Perl_ithread_join(aTHX_ thread) |
67 | #define ithread_DESTROY(thread) Perl_ithread_DESTROY(aTHX_ thread) |
68 | #define ithread_CLONE(thread) Perl_ithread_CLONE(aTHX_ thread) |
69 | #define ithread_detach(thread) Perl_ithread_detach(aTHX_ thread) |
70 | #define ithread_tid(thread) ((thread)->tid) |
71 | |
72 | static perl_mutex create_mutex; /* protects the creation of threads ??? */ |
73 | |
74 | I32 tid_counter = 0; |
75 | |
76 | perl_key self_key; |
77 | |
78 | /* |
79 | * Clear up after thread is done with |
80 | */ |
81 | void |
82 | Perl_ithread_destruct (pTHX_ ithread* thread) |
83 | { |
84 | MUTEX_LOCK(&thread->mutex); |
68795e93 |
85 | if (thread->count != 0) { |
86 | MUTEX_UNLOCK(&thread->mutex); |
d1400e48 |
87 | return; |
68795e93 |
88 | } |
68795e93 |
89 | MUTEX_LOCK(&create_mutex); |
90 | /* Remove from circular list of threads */ |
91 | if (thread->next == thread) { |
92 | /* last one should never get here ? */ |
93 | threads = NULL; |
94 | } |
95 | else { |
96 | thread->next->prev = thread->prev->next; |
97 | thread->prev->next = thread->next->prev; |
98 | if (threads == thread) { |
99 | threads = thread->next; |
100 | } |
101 | } |
102 | MUTEX_UNLOCK(&create_mutex); |
103 | /* Thread is now disowned */ |
ba14dd9a |
104 | #if 0 |
105 | Perl_warn(aTHX_ "destruct %d @ %p by %p", |
106 | thread->tid,thread->interp,aTHX); |
107 | #endif |
68795e93 |
108 | if (thread->interp) { |
109 | dTHXa(thread->interp); |
110 | PERL_SET_CONTEXT(thread->interp); |
111 | perl_destruct(thread->interp); |
112 | perl_free(thread->interp); |
113 | thread->interp = NULL; |
114 | } |
115 | PERL_SET_CONTEXT(aTHX); |
d1400e48 |
116 | MUTEX_UNLOCK(&thread->mutex); |
68795e93 |
117 | } |
118 | |
119 | |
120 | /* MAGIC (in mg.h sense) hooks */ |
121 | |
122 | int |
123 | ithread_mg_get(pTHX_ SV *sv, MAGIC *mg) |
124 | { |
125 | ithread *thread = (ithread *) mg->mg_ptr; |
126 | SvIVX(sv) = PTR2IV(thread); |
127 | SvIOK_on(sv); |
128 | return 0; |
129 | } |
130 | |
131 | int |
132 | ithread_mg_free(pTHX_ SV *sv, MAGIC *mg) |
133 | { |
134 | ithread *thread = (ithread *) mg->mg_ptr; |
135 | MUTEX_LOCK(&thread->mutex); |
68795e93 |
136 | thread->count--; |
137 | MUTEX_UNLOCK(&thread->mutex); |
138 | /* This is safe as it re-checks count */ |
139 | Perl_ithread_destruct(aTHX_ thread); |
140 | return 0; |
141 | } |
142 | |
143 | int |
144 | ithread_mg_dup(pTHX_ MAGIC *mg, CLONE_PARAMS *param) |
145 | { |
146 | ithread *thread = (ithread *) mg->mg_ptr; |
147 | MUTEX_LOCK(&thread->mutex); |
68795e93 |
148 | thread->count++; |
149 | MUTEX_UNLOCK(&thread->mutex); |
150 | return 0; |
151 | } |
152 | |
153 | MGVTBL ithread_vtbl = { |
154 | ithread_mg_get, /* get */ |
155 | 0, /* set */ |
156 | 0, /* len */ |
157 | 0, /* clear */ |
158 | ithread_mg_free, /* free */ |
159 | 0, /* copy */ |
160 | ithread_mg_dup /* dup */ |
161 | }; |
162 | |
47ba8780 |
163 | |
47ba8780 |
164 | /* |
b1edfb69 |
165 | * Starts executing the thread. Needs to clean up memory a tad better. |
68795e93 |
166 | * Passed as the C level function to run in the new thread |
b1edfb69 |
167 | */ |
47ba8780 |
168 | |
169 | #ifdef WIN32 |
68795e93 |
170 | THREAD_RET_TYPE |
171 | Perl_ithread_run(LPVOID arg) { |
47ba8780 |
172 | #else |
68795e93 |
173 | void* |
174 | Perl_ithread_run(void * arg) { |
47ba8780 |
175 | #endif |
5b414d21 |
176 | ithread* thread = (ithread*) arg; |
47ba8780 |
177 | dTHXa(thread->interp); |
47ba8780 |
178 | PERL_SET_CONTEXT(thread->interp); |
68795e93 |
179 | PERL_THREAD_SETSPECIFIC(self_key,thread); |
47ba8780 |
180 | |
68795e93 |
181 | #if 0 |
182 | /* Far from clear messing with ->thr child-side is a good idea */ |
183 | MUTEX_LOCK(&thread->mutex); |
47ba8780 |
184 | #ifdef WIN32 |
185 | thread->thr = GetCurrentThreadId(); |
186 | #else |
187 | thread->thr = pthread_self(); |
188 | #endif |
68795e93 |
189 | MUTEX_UNLOCK(&thread->mutex); |
190 | #endif |
47ba8780 |
191 | |
47ba8780 |
192 | PL_perl_destruct_level = 2; |
4f896ddc |
193 | |
47ba8780 |
194 | { |
68795e93 |
195 | AV* params = (AV*) SvRV(thread->params); |
196 | I32 len = av_len(params)+1; |
47ba8780 |
197 | int i; |
198 | dSP; |
47ba8780 |
199 | ENTER; |
200 | SAVETMPS; |
201 | PUSHMARK(SP); |
68795e93 |
202 | for(i = 0; i < len; i++) { |
203 | XPUSHs(av_shift(params)); |
47ba8780 |
204 | } |
205 | PUTBACK; |
a446a88f |
206 | len = call_sv(thread->init_function, thread->gimme|G_EVAL); |
68795e93 |
207 | SPAGAIN; |
a446a88f |
208 | for (i=len-1; i >= 0; i--) { |
e1c44605 |
209 | SV *sv = POPs; |
210 | av_store(params, i, SvREFCNT_inc(sv)); |
a446a88f |
211 | } |
212 | PUTBACK; |
213 | if (SvTRUE(ERRSV)) { |
214 | Perl_warn(aTHX_ "Died:%_",ERRSV); |
215 | } |
47ba8780 |
216 | FREETMPS; |
217 | LEAVE; |
68795e93 |
218 | SvREFCNT_dec(thread->init_function); |
47ba8780 |
219 | } |
220 | |
fd58862f |
221 | PerlIO_flush((PerlIO*)NULL); |
68795e93 |
222 | MUTEX_LOCK(&thread->mutex); |
a446a88f |
223 | if (thread->detached & 1) { |
47ba8780 |
224 | MUTEX_UNLOCK(&thread->mutex); |
a446a88f |
225 | SvREFCNT_dec(thread->params); |
226 | thread->params = Nullsv; |
68795e93 |
227 | Perl_ithread_destruct(aTHX_ thread); |
47ba8780 |
228 | } else { |
a446a88f |
229 | thread->detached |= 4; |
47ba8780 |
230 | MUTEX_UNLOCK(&thread->mutex); |
231 | } |
232 | #ifdef WIN32 |
233 | return (DWORD)0; |
e8f2bb9a |
234 | #else |
235 | return 0; |
47ba8780 |
236 | #endif |
68795e93 |
237 | } |
238 | |
239 | SV * |
240 | ithread_to_SV(pTHX_ SV *obj, ithread *thread, char *classname, bool inc) |
241 | { |
242 | SV *sv; |
243 | MAGIC *mg; |
244 | if (inc) { |
245 | MUTEX_LOCK(&thread->mutex); |
246 | thread->count++; |
68795e93 |
247 | MUTEX_UNLOCK(&thread->mutex); |
248 | } |
249 | if (!obj) |
250 | obj = newSV(0); |
251 | sv = newSVrv(obj,classname); |
252 | sv_setiv(sv,PTR2IV(thread)); |
253 | mg = sv_magicext(sv,Nullsv,PERL_MAGIC_shared_scalar,&ithread_vtbl,(char *)thread,0); |
254 | mg->mg_flags |= MGf_DUP; |
255 | SvREADONLY_on(sv); |
256 | return obj; |
257 | } |
47ba8780 |
258 | |
68795e93 |
259 | ithread * |
260 | SV_to_ithread(pTHX_ SV *sv) |
261 | { |
262 | ithread *thread; |
263 | if (SvROK(sv)) |
264 | { |
265 | thread = INT2PTR(ithread*, SvIV(SvRV(sv))); |
266 | } |
267 | else |
268 | { |
269 | PERL_THREAD_GETSPECIFIC(self_key,thread); |
270 | } |
271 | return thread; |
47ba8780 |
272 | } |
273 | |
47ba8780 |
274 | /* |
68795e93 |
275 | * iThread->create(); ( aka iThread->new() ) |
276 | * Called in context of parent thread |
b1edfb69 |
277 | */ |
47ba8780 |
278 | |
68795e93 |
279 | SV * |
280 | Perl_ithread_create(pTHX_ SV *obj, char* classname, SV* init_function, SV* params) |
281 | { |
282 | ithread* thread; |
283 | CLONE_PARAMS clone_param; |
284 | |
285 | MUTEX_LOCK(&create_mutex); |
286 | thread = PerlMemShared_malloc(sizeof(ithread)); |
287 | Zero(thread,1,ithread); |
288 | thread->next = threads; |
289 | thread->prev = threads->prev; |
290 | thread->prev->next = thread; |
291 | /* Set count to 1 immediately in case thread exits before |
292 | * we return to caller ! |
293 | */ |
294 | thread->count = 1; |
295 | MUTEX_INIT(&thread->mutex); |
296 | thread->tid = tid_counter++; |
a446a88f |
297 | thread->gimme = GIMME_V; |
298 | thread->detached = (thread->gimme == G_VOID) ? 1 : 0; |
4f896ddc |
299 | |
68795e93 |
300 | /* "Clone" our interpreter into the thread's interpreter |
301 | * This gives thread access to "static data" and code. |
302 | */ |
47ba8780 |
303 | |
68795e93 |
304 | PerlIO_flush((PerlIO*)NULL); |
cd8c9bf8 |
305 | |
47ba8780 |
306 | #ifdef WIN32 |
68795e93 |
307 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE | CLONEf_CLONE_HOST); |
47ba8780 |
308 | #else |
68795e93 |
309 | thread->interp = perl_clone(aTHX, CLONEf_KEEP_PTR_TABLE); |
47ba8780 |
310 | #endif |
ba14dd9a |
311 | /* perl_clone leaves us in new interpreter's context. |
312 | As it is tricky to spot implcit aTHX create a new scope |
a446a88f |
313 | with aTHX matching the context for the duration of |
ba14dd9a |
314 | our work for new interpreter. |
315 | */ |
316 | { |
317 | dTHXa(thread->interp); |
47ba8780 |
318 | |
d1400e48 |
319 | clone_param.flags = 0; |
ba14dd9a |
320 | thread->init_function = sv_dup(init_function, &clone_param); |
321 | if (SvREFCNT(thread->init_function) == 0) { |
322 | SvREFCNT_inc(thread->init_function); |
d1400e48 |
323 | } |
ba14dd9a |
324 | |
325 | thread->params = sv_dup(params, &clone_param); |
326 | SvREFCNT_inc(thread->params); |
327 | SvTEMP_off(thread->init_function); |
328 | ptr_table_free(PL_ptr_table); |
329 | PL_ptr_table = NULL; |
330 | } |
d1400e48 |
331 | |
68795e93 |
332 | PERL_SET_CONTEXT(aTHX); |
47ba8780 |
333 | |
68795e93 |
334 | /* Start the thread */ |
47ba8780 |
335 | |
336 | #ifdef WIN32 |
337 | |
68795e93 |
338 | thread->handle = CreateThread(NULL, 0, Perl_ithread_run, |
47ba8780 |
339 | (LPVOID)thread, 0, &thread->thr); |
340 | |
82c40bf6 |
341 | #else |
fa26028c |
342 | { |
343 | static pthread_attr_t attr; |
344 | static int attr_inited = 0; |
345 | sigset_t fullmask, oldmask; |
346 | static int attr_joinable = PTHREAD_CREATE_JOINABLE; |
347 | if (!attr_inited) { |
348 | attr_inited = 1; |
349 | pthread_attr_init(&attr); |
350 | } |
351 | # ifdef PTHREAD_ATTR_SETDETACHSTATE |
352 | PTHREAD_ATTR_SETDETACHSTATE(&attr, attr_joinable); |
353 | # endif |
3eb37d38 |
354 | # ifdef THREAD_CREATE_NEEDS_STACK |
355 | if(pthread_attr_setstacksize(&attr, THREAD_CREATE_NEEDS_STACK)) |
356 | croak("panic: pthread_attr_setstacksize failed"); |
357 | # endif |
358 | |
3ad0b7d6 |
359 | #ifdef OLD_PTHREADS_API |
68795e93 |
360 | pthread_create( &thread->thr, attr, Perl_ithread_run, (void *)thread); |
47ba8780 |
361 | #else |
68795e93 |
362 | pthread_create( &thread->thr, &attr, Perl_ithread_run, (void *)thread); |
47ba8780 |
363 | #endif |
3ad0b7d6 |
364 | } |
82c40bf6 |
365 | #endif |
d1400e48 |
366 | MUTEX_UNLOCK(&create_mutex); |
68795e93 |
367 | return ithread_to_SV(aTHX_ obj, thread, classname, FALSE); |
368 | } |
47ba8780 |
369 | |
68795e93 |
370 | SV* |
371 | Perl_ithread_self (pTHX_ SV *obj, char* Class) |
372 | { |
373 | ithread *thread; |
374 | PERL_THREAD_GETSPECIFIC(self_key,thread); |
375 | return ithread_to_SV(aTHX_ obj, thread, Class, TRUE); |
47ba8780 |
376 | } |
377 | |
378 | /* |
e1c44605 |
379 | * Joins the thread this code needs to take the returnvalue from the |
68795e93 |
380 | * call_sv and send it back |
b1edfb69 |
381 | */ |
47ba8780 |
382 | |
68795e93 |
383 | void |
384 | Perl_ithread_CLONE(pTHX_ SV *obj) |
385 | { |
386 | if (SvROK(obj)) |
387 | { |
388 | ithread *thread = SV_to_ithread(aTHX_ obj); |
389 | } |
390 | else |
391 | { |
392 | Perl_warn(aTHX_ "CLONE %_",obj); |
393 | } |
47ba8780 |
394 | } |
395 | |
e1c44605 |
396 | AV* |
68795e93 |
397 | Perl_ithread_join(pTHX_ SV *obj) |
398 | { |
399 | ithread *thread = SV_to_ithread(aTHX_ obj); |
400 | MUTEX_LOCK(&thread->mutex); |
a446a88f |
401 | if (thread->detached & 1) { |
402 | MUTEX_UNLOCK(&thread->mutex); |
403 | Perl_croak(aTHX_ "Cannot join a detached thread"); |
404 | } |
405 | else if (thread->detached & 2) { |
406 | MUTEX_UNLOCK(&thread->mutex); |
407 | Perl_croak(aTHX_ "Thread already joined"); |
408 | } |
409 | else { |
e1c44605 |
410 | AV* retparam; |
47ba8780 |
411 | #ifdef WIN32 |
412 | DWORD waitcode; |
47ba8780 |
413 | #else |
414 | void *retval; |
47ba8780 |
415 | #endif |
47ba8780 |
416 | MUTEX_UNLOCK(&thread->mutex); |
68795e93 |
417 | #ifdef WIN32 |
418 | waitcode = WaitForSingleObject(thread->handle, INFINITE); |
419 | #else |
420 | pthread_join(thread->thr,&retval); |
421 | #endif |
47ba8780 |
422 | MUTEX_LOCK(&thread->mutex); |
e1c44605 |
423 | |
424 | { |
425 | AV* params = (AV*) SvRV(thread->params); |
426 | CLONE_PARAMS clone_params; |
3275ba96 |
427 | clone_params.stashes = newAV(); |
e1c44605 |
428 | PL_ptr_table = ptr_table_new(); |
429 | retparam = (AV*) sv_dup((SV*)params, &clone_params); |
3275ba96 |
430 | SvREFCNT_dec(clone_params.stashes); |
e1c44605 |
431 | SvREFCNT_inc(retparam); |
432 | ptr_table_free(PL_ptr_table); |
433 | PL_ptr_table = NULL; |
434 | |
435 | } |
a446a88f |
436 | /* sv_dup over the args */ |
437 | /* We have finished with it */ |
438 | thread->detached |= 2; |
47ba8780 |
439 | MUTEX_UNLOCK(&thread->mutex); |
68795e93 |
440 | sv_unmagic(SvRV(obj),PERL_MAGIC_shared_scalar); |
e1c44605 |
441 | Perl_ithread_destruct(aTHX_ thread); |
442 | return retparam; |
68795e93 |
443 | } |
e1c44605 |
444 | return (AV*)NULL; |
47ba8780 |
445 | } |
446 | |
68795e93 |
447 | void |
448 | Perl_ithread_detach(pTHX_ ithread *thread) |
449 | { |
450 | MUTEX_LOCK(&thread->mutex); |
451 | if (!thread->detached) { |
452 | thread->detached = 1; |
47ba8780 |
453 | #ifdef WIN32 |
68795e93 |
454 | CloseHandle(thread->handle); |
455 | thread->handle = 0; |
47ba8780 |
456 | #else |
68795e93 |
457 | PERL_THREAD_DETACH(thread->thr); |
47ba8780 |
458 | #endif |
68795e93 |
459 | } |
460 | MUTEX_UNLOCK(&thread->mutex); |
461 | } |
47ba8780 |
462 | |
47ba8780 |
463 | |
68795e93 |
464 | void |
465 | Perl_ithread_DESTROY(pTHX_ SV *sv) |
466 | { |
467 | ithread *thread = SV_to_ithread(aTHX_ sv); |
68795e93 |
468 | sv_unmagic(SvRV(sv),PERL_MAGIC_shared_scalar); |
469 | } |
8222d950 |
470 | |
e1c44605 |
471 | |
472 | |
68795e93 |
473 | MODULE = threads PACKAGE = threads PREFIX = ithread_ |
474 | PROTOTYPES: DISABLE |
8222d950 |
475 | |
68795e93 |
476 | void |
477 | ithread_new (classname, function_to_call, ...) |
478 | char * classname |
479 | SV * function_to_call |
480 | CODE: |
481 | { |
482 | AV* params = newAV(); |
483 | if (items > 2) { |
484 | int i; |
485 | for(i = 2; i < items ; i++) { |
486 | av_push(params, ST(i)); |
487 | } |
488 | } |
489 | ST(0) = sv_2mortal(Perl_ithread_create(aTHX_ Nullsv, classname, function_to_call, newRV_noinc((SV*) params))); |
490 | XSRETURN(1); |
491 | } |
8222d950 |
492 | |
68795e93 |
493 | void |
494 | ithread_self(char *classname) |
495 | CODE: |
496 | { |
497 | ST(0) = sv_2mortal(Perl_ithread_self(aTHX_ Nullsv,classname)); |
498 | XSRETURN(1); |
499 | } |
47ba8780 |
500 | |
501 | int |
68795e93 |
502 | ithread_tid(ithread *thread) |
47ba8780 |
503 | |
504 | void |
68795e93 |
505 | ithread_join(SV *obj) |
e1c44605 |
506 | PPCODE: |
507 | { |
508 | AV* params = Perl_ithread_join(aTHX_ obj); |
509 | int i; |
510 | I32 len = AvFILL(params); |
511 | for (i = 0; i <= len; i++) { |
512 | XPUSHs(av_shift(params)); |
513 | } |
514 | SvREFCNT_dec(params); |
515 | } |
516 | |
47ba8780 |
517 | |
518 | void |
68795e93 |
519 | ithread_detach(ithread *thread) |
47ba8780 |
520 | |
47ba8780 |
521 | void |
68795e93 |
522 | ithread_DESTROY(SV *thread) |
523 | |
68795e93 |
524 | BOOT: |
525 | { |
526 | ithread* thread; |
e1c44605 |
527 | PL_perl_destruct_level = 2; |
68795e93 |
528 | PERL_THREAD_ALLOC_SPECIFIC(self_key); |
529 | MUTEX_INIT(&create_mutex); |
530 | MUTEX_LOCK(&create_mutex); |
531 | thread = PerlMemShared_malloc(sizeof(ithread)); |
532 | Zero(thread,1,ithread); |
533 | PL_perl_destruct_level = 2; |
534 | MUTEX_INIT(&thread->mutex); |
535 | threads = thread; |
536 | thread->next = thread; |
537 | thread->prev = thread; |
538 | thread->interp = aTHX; |
539 | thread->count = 1; /* imortal */ |
540 | thread->tid = tid_counter++; |
541 | thread->detached = 1; |
542 | #ifdef WIN32 |
543 | thread->thr = GetCurrentThreadId(); |
544 | #else |
545 | thread->thr = pthread_self(); |
546 | #endif |
547 | PERL_THREAD_SETSPECIFIC(self_key,thread); |
548 | MUTEX_UNLOCK(&create_mutex); |
549 | } |
550 | |