| /* 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 __OPEN_VM |
| # define pthread_addr_t void * |
| # 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(__OPEN_VM) || 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 DGUX |
| # define THREAD_CREATE_NEEDS_STACK (32*1024) |
| #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 |
| |
| # define MUTEX_LOCK(m) \ |
| STMT_START { \ |
| int _eC_; \ |
| if ((_eC_ = 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_ = 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)) { \ |
| 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 |
| |
| /* |
| * Local variables: |
| * c-indentation-style: bsd |
| * c-basic-offset: 4 |
| * indent-tabs-mode: t |
| * End: |
| * |
| * ex: set ts=8 sts=4 sw=4 noet: |
| */ |