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proc
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CORE
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thread.h
/* thread.h * * Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, * by Larry Wall and others * * You may distribute under the terms of either the GNU General Public * License or the Artistic License, as specified in the README file. * */ #if defined(USE_ITHREADS) #if defined(VMS) #include <builtins.h> #endif #ifdef WIN32 # include <win32thread.h> #else #ifdef NETWARE # include <nw5thread.h> #else # ifdef OLD_PTHREADS_API /* Here be dragons. */ # define DETACH(t) \ STMT_START { \ int _eC_; \ if ((_eC_ = pthread_detach(&(t)->self))) { \ MUTEX_UNLOCK(&(t)->mutex); \ Perl_croak_nocontext("panic: DETACH (%d) [%s:%d]", \ _eC_, __FILE__, __LINE__); \ } \ } STMT_END # define PERL_GET_CONTEXT Perl_get_context() # define PERL_SET_CONTEXT(t) Perl_set_context((void*)t) # define PTHREAD_GETSPECIFIC_INT # ifdef DJGPP # define pthread_addr_t any_t # define NEED_PTHREAD_INIT # define PTHREAD_CREATE_JOINABLE (1) # endif # ifdef OEMVS # define pthread_addr_t void * # define pthread_create(t,a,s,d) pthread_create(t,&(a),s,d) # define pthread_keycreate pthread_key_create # endif # ifdef VMS # define pthread_attr_init(a) pthread_attr_create(a) # define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_setdetach_np(a,s) # define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d) # define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d)) # define pthread_mutexattr_init(a) pthread_mutexattr_create(a) # define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t) # endif # if defined(__hpux) && defined(__ux_version) && __ux_version <= 1020 # define pthread_attr_init(a) pthread_attr_create(a) /* XXX pthread_setdetach_np() missing in DCE threads on HP-UX 10.20 */ # define PTHREAD_ATTR_SETDETACHSTATE(a,s) (0) # define PTHREAD_CREATE(t,a,s,d) pthread_create(t,a,s,d) # define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d)) # define pthread_mutexattr_init(a) pthread_mutexattr_create(a) # define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t) # endif # if defined(DJGPP) || defined(OEMVS) # define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,&(s)) # define YIELD pthread_yield(NULL) # endif # endif # if !defined(__hpux) || !defined(__ux_version) || __ux_version > 1020 # define pthread_mutexattr_default NULL # define pthread_condattr_default NULL # endif #endif /* NETWARE */ #endif #ifndef PTHREAD_CREATE /* You are not supposed to pass NULL as the 2nd arg of PTHREAD_CREATE(). */ # define PTHREAD_CREATE(t,a,s,d) pthread_create(t,&(a),s,d) #endif #ifndef PTHREAD_ATTR_SETDETACHSTATE # define PTHREAD_ATTR_SETDETACHSTATE(a,s) pthread_attr_setdetachstate(a,s) #endif #ifndef PTHREAD_CREATE_JOINABLE # ifdef OLD_PTHREAD_CREATE_JOINABLE # define PTHREAD_CREATE_JOINABLE OLD_PTHREAD_CREATE_JOINABLE # else # define PTHREAD_CREATE_JOINABLE 0 /* Panic? No, guess. */ # endif #endif #ifdef __VMS /* Default is 1024 on VAX, 8192 otherwise */ # ifdef __ia64 # define THREAD_CREATE_NEEDS_STACK (48*1024) # else # define THREAD_CREATE_NEEDS_STACK (32*1024) # endif #endif #ifdef I_MACH_CTHREADS /* cthreads interface */ /* #include <mach/cthreads.h> is in perl.h #ifdef I_MACH_CTHREADS */ #define MUTEX_INIT(m) \ STMT_START { \ *m = mutex_alloc(); \ if (*m) { \ mutex_init(*m); \ } else { \ Perl_croak_nocontext("panic: MUTEX_INIT [%s:%d]", \ __FILE__, __LINE__); \ } \ } STMT_END #define MUTEX_LOCK(m) mutex_lock(*m) #define MUTEX_UNLOCK(m) mutex_unlock(*m) #define MUTEX_DESTROY(m) \ STMT_START { \ mutex_free(*m); \ *m = 0; \ } STMT_END #define COND_INIT(c) \ STMT_START { \ *c = condition_alloc(); \ if (*c) { \ condition_init(*c); \ } \ else { \ Perl_croak_nocontext("panic: COND_INIT [%s:%d]", \ __FILE__, __LINE__); \ } \ } STMT_END #define COND_SIGNAL(c) condition_signal(*c) #define COND_BROADCAST(c) condition_broadcast(*c) #define COND_WAIT(c, m) condition_wait(*c, *m) #define COND_DESTROY(c) \ STMT_START { \ condition_free(*c); \ *c = 0; \ } STMT_END #define THREAD_CREATE(thr, f) (thr->self = cthread_fork(f, thr), 0) #define THREAD_POST_CREATE(thr) #define THREAD_RET_TYPE any_t #define THREAD_RET_CAST(x) ((any_t) x) #define DETACH(t) cthread_detach(t->self) #define JOIN(t, avp) (*(avp) = MUTABLE_AV(cthread_join(t->self))) #define PERL_SET_CONTEXT(t) cthread_set_data(cthread_self(), t) #define PERL_GET_CONTEXT cthread_data(cthread_self()) #define INIT_THREADS cthread_init() #define YIELD cthread_yield() #define ALLOC_THREAD_KEY NOOP #define FREE_THREAD_KEY NOOP #define SET_THREAD_SELF(thr) (thr->self = cthread_self()) #endif /* I_MACH_CTHREADS */ #ifndef YIELD # ifdef SCHED_YIELD # define YIELD SCHED_YIELD # else # ifdef HAS_SCHED_YIELD # define YIELD sched_yield() # else # ifdef HAS_PTHREAD_YIELD /* pthread_yield(NULL) platforms are expected * to have #defined YIELD for themselves. */ # define YIELD pthread_yield() # endif # endif # endif #endif #ifdef __hpux # define MUTEX_INIT_NEEDS_MUTEX_ZEROED #endif #ifndef MUTEX_INIT # ifdef MUTEX_INIT_NEEDS_MUTEX_ZEROED /* Temporary workaround, true bug is deeper. --jhi 1999-02-25 */ # define MUTEX_INIT(m) \ STMT_START { \ int _eC_; \ Zero((m), 1, perl_mutex); \ if ((_eC_ = pthread_mutex_init((m), pthread_mutexattr_default))) \ Perl_croak_nocontext("panic: MUTEX_INIT (%d) [%s:%d]", \ _eC_, __FILE__, __LINE__); \ } STMT_END # else # define MUTEX_INIT(m) \ STMT_START { \ int _eC_; \ if ((_eC_ = pthread_mutex_init((m), pthread_mutexattr_default))) \ Perl_croak_nocontext("panic: MUTEX_INIT (%d) [%s:%d]", \ _eC_, __FILE__, __LINE__); \ } STMT_END # endif # ifdef PERL_TSA_ACTIVE # define perl_pthread_mutex_lock(m) perl_tsa_mutex_lock(m) # define perl_pthread_mutex_unlock(m) perl_tsa_mutex_unlock(m) # else # define perl_pthread_mutex_lock(m) pthread_mutex_lock(m) # define perl_pthread_mutex_unlock(m) pthread_mutex_unlock(m) # endif # define MUTEX_LOCK(m) \ STMT_START { \ int _eC_; \ if ((_eC_ = perl_pthread_mutex_lock((m)))) \ Perl_croak_nocontext("panic: MUTEX_LOCK (%d) [%s:%d]", \ _eC_, __FILE__, __LINE__); \ } STMT_END # define MUTEX_UNLOCK(m) \ STMT_START { \ int _eC_; \ if ((_eC_ = perl_pthread_mutex_unlock((m)))) \ Perl_croak_nocontext("panic: MUTEX_UNLOCK (%d) [%s:%d]", \ _eC_, __FILE__, __LINE__); \ } STMT_END # define MUTEX_DESTROY(m) \ STMT_START { \ int _eC_; \ if ((_eC_ = pthread_mutex_destroy((m)))) \ Perl_croak_nocontext("panic: MUTEX_DESTROY (%d) [%s:%d]", \ _eC_, __FILE__, __LINE__); \ } STMT_END #endif /* MUTEX_INIT */ #ifndef COND_INIT # define COND_INIT(c) \ STMT_START { \ int _eC_; \ if ((_eC_ = pthread_cond_init((c), pthread_condattr_default))) \ Perl_croak_nocontext("panic: COND_INIT (%d) [%s:%d]", \ _eC_, __FILE__, __LINE__); \ } STMT_END # define COND_SIGNAL(c) \ STMT_START { \ int _eC_; \ if ((_eC_ = pthread_cond_signal((c)))) \ Perl_croak_nocontext("panic: COND_SIGNAL (%d) [%s:%d]", \ _eC_, __FILE__, __LINE__); \ } STMT_END # define COND_BROADCAST(c) \ STMT_START { \ int _eC_; \ if ((_eC_ = pthread_cond_broadcast((c)))) \ Perl_croak_nocontext("panic: COND_BROADCAST (%d) [%s:%d]", \ _eC_, __FILE__, __LINE__); \ } STMT_END # define COND_WAIT(c, m) \ STMT_START { \ int _eC_; \ if ((_eC_ = pthread_cond_wait((c), (m)))) \ Perl_croak_nocontext("panic: COND_WAIT (%d) [%s:%d]", \ _eC_, __FILE__, __LINE__); \ } STMT_END # define COND_DESTROY(c) \ STMT_START { \ int _eC_; \ if ((_eC_ = pthread_cond_destroy((c)))) \ Perl_croak_nocontext("panic: COND_DESTROY (%d) [%s:%d]", \ _eC_, __FILE__, __LINE__); \ } STMT_END #endif /* COND_INIT */ /* DETACH(t) must only be called while holding t->mutex */ #ifndef DETACH # define DETACH(t) \ STMT_START { \ int _eC_; \ if ((_eC_ = pthread_detach((t)->self))) { \ MUTEX_UNLOCK(&(t)->mutex); \ Perl_croak_nocontext("panic: DETACH (%d) [%s:%d]", \ _eC_, __FILE__, __LINE__); \ } \ } STMT_END #endif /* DETACH */ #ifndef JOIN # define JOIN(t, avp) \ STMT_START { \ int _eC_; \ if ((_eC_ = pthread_join((t)->self, (void**)(avp)))) \ Perl_croak_nocontext("panic: pthread_join (%d) [%s:%d]", \ _eC_, __FILE__, __LINE__); \ } STMT_END #endif /* JOIN */ /* Use an unchecked fetch of thread-specific data instead of a checked one. * It would fail if the key were bogus, but if the key were bogus then * Really Bad Things would be happening anyway. --dan */ #if (defined(__ALPHA) && (__VMS_VER >= 70000000)) || \ (defined(__alpha) && defined(__osf__) && !defined(__GNUC__)) /* Available only on >= 4.0 */ # define HAS_PTHREAD_UNCHECKED_GETSPECIFIC_NP /* Configure test needed */ #endif #ifdef HAS_PTHREAD_UNCHECKED_GETSPECIFIC_NP # define PTHREAD_GETSPECIFIC(key) pthread_unchecked_getspecific_np(key) #else # define PTHREAD_GETSPECIFIC(key) pthread_getspecific(key) #endif #ifndef PERL_GET_CONTEXT # define PERL_GET_CONTEXT PTHREAD_GETSPECIFIC(PL_thr_key) #endif #ifndef PERL_SET_CONTEXT # define PERL_SET_CONTEXT(t) \ STMT_START { \ int _eC_; \ if ((_eC_ = pthread_setspecific(PL_thr_key, (void *)(t)))) \ Perl_croak_nocontext("panic: pthread_setspecific (%d) [%s:%d]", \ _eC_, __FILE__, __LINE__); \ } STMT_END #endif /* PERL_SET_CONTEXT */ #ifndef INIT_THREADS # ifdef NEED_PTHREAD_INIT # define INIT_THREADS pthread_init() # endif #endif #ifndef ALLOC_THREAD_KEY # define ALLOC_THREAD_KEY \ STMT_START { \ if (pthread_key_create(&PL_thr_key, 0)) { \ PERL_UNUSED_RESULT(write(2, STR_WITH_LEN("panic: pthread_key_create failed\n"))); \ exit(1); \ } \ } STMT_END #endif #ifndef FREE_THREAD_KEY # define FREE_THREAD_KEY \ STMT_START { \ pthread_key_delete(PL_thr_key); \ } STMT_END #endif #ifndef PTHREAD_ATFORK # ifdef HAS_PTHREAD_ATFORK # define PTHREAD_ATFORK(prepare,parent,child) \ pthread_atfork(prepare,parent,child) # else # define PTHREAD_ATFORK(prepare,parent,child) \ NOOP # endif #endif #ifndef THREAD_RET_TYPE # define THREAD_RET_TYPE void * # define THREAD_RET_CAST(p) ((void *)(p)) #endif /* THREAD_RET */ # define LOCK_DOLLARZERO_MUTEX MUTEX_LOCK(&PL_dollarzero_mutex) # define UNLOCK_DOLLARZERO_MUTEX MUTEX_UNLOCK(&PL_dollarzero_mutex) #endif /* USE_ITHREADS */ #ifndef MUTEX_LOCK # define MUTEX_LOCK(m) #endif #ifndef MUTEX_UNLOCK # define MUTEX_UNLOCK(m) #endif #ifndef MUTEX_INIT # define MUTEX_INIT(m) #endif #ifndef MUTEX_DESTROY # define MUTEX_DESTROY(m) #endif #ifndef COND_INIT # define COND_INIT(c) #endif #ifndef COND_SIGNAL # define COND_SIGNAL(c) #endif #ifndef COND_BROADCAST # define COND_BROADCAST(c) #endif #ifndef COND_WAIT # define COND_WAIT(c, m) #endif #ifndef COND_DESTROY # define COND_DESTROY(c) #endif #ifndef LOCK_DOLLARZERO_MUTEX # define LOCK_DOLLARZERO_MUTEX #endif #ifndef UNLOCK_DOLLARZERO_MUTEX # define UNLOCK_DOLLARZERO_MUTEX #endif /* THR, SET_THR, and dTHR are there for compatibility with old versions */ #ifndef THR # define THR PERL_GET_THX #endif #ifndef SET_THR # define SET_THR(t) PERL_SET_THX(t) #endif #ifndef dTHR # define dTHR dNOOP #endif #ifndef INIT_THREADS # define INIT_THREADS NOOP #endif /* * ex: set ts=8 sts=4 sw=4 et: */
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