X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/bce813aac1160c79546da18348b6e6d4f2d4e476..d8ef1fcdce21e8d5905a1ed77bc1caa307b2b79e:/thread.h diff --git a/thread.h b/thread.h index 87e8974..3b84f36 100644 --- a/thread.h +++ b/thread.h @@ -1,4 +1,14 @@ -#if defined(USE_THREADS) || defined(USE_ITHREADS) +/* 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 @@ -7,12 +17,17 @@ #ifdef WIN32 # include #else +#ifdef NETWARE +# include +#else # ifdef OLD_PTHREADS_API /* Here be dragons. */ # define DETACH(t) \ STMT_START { \ - if (pthread_detach(&(t)->self)) { \ + int _eC_; \ + if ((_eC_ = pthread_detach(&(t)->self))) { \ MUTEX_UNLOCK(&(t)->mutex); \ - Perl_croak_nocontext("panic: DETACH"); \ + Perl_croak_nocontext("panic: DETACH (%d) [%s:%d]", \ + _eC_, __FILE__, __LINE__); \ } \ } STMT_END @@ -28,6 +43,11 @@ # 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) @@ -45,7 +65,7 @@ # 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) +# 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 @@ -54,6 +74,7 @@ # define pthread_mutexattr_default NULL # define pthread_condattr_default NULL # endif +#endif /* NETWARE */ #endif #ifndef PTHREAD_CREATE @@ -74,7 +95,16 @@ #endif #ifdef DGUX -# define THREAD_CREATE_NEEDS_STACK (16*1024) +# 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 @@ -89,7 +119,8 @@ if (*m) { \ mutex_init(*m); \ } else { \ - Perl_croak_nocontext("panic: MUTEX_INIT"); \ + Perl_croak_nocontext("panic: MUTEX_INIT [%s:%d]", \ + __FILE__, __LINE__); \ } \ } STMT_END @@ -108,7 +139,8 @@ condition_init(*c); \ } \ else { \ - Perl_croak_nocontext("panic: COND_INIT"); \ + Perl_croak_nocontext("panic: COND_INIT [%s:%d]", \ + __FILE__, __LINE__); \ } \ } STMT_END @@ -128,7 +160,7 @@ #define THREAD_RET_CAST(x) ((any_t) x) #define DETACH(t) cthread_detach(t->self) -#define JOIN(t, avp) (*(avp) = (AV *)cthread_join(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()) @@ -167,66 +199,86 @@ /* Temporary workaround, true bug is deeper. --jhi 1999-02-25 */ # define MUTEX_INIT(m) \ STMT_START { \ + int _eC_; \ Zero((m), 1, perl_mutex); \ - if (pthread_mutex_init((m), pthread_mutexattr_default)) \ - Perl_croak_nocontext("panic: MUTEX_INIT"); \ + 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 { \ - if (pthread_mutex_init((m), pthread_mutexattr_default)) \ - Perl_croak_nocontext("panic: MUTEX_INIT"); \ + 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 { \ - if (pthread_mutex_lock((m))) \ - Perl_croak_nocontext("panic: MUTEX_LOCK"); \ + 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 { \ - if (pthread_mutex_unlock((m))) \ - Perl_croak_nocontext("panic: MUTEX_UNLOCK"); \ + 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 { \ - if (pthread_mutex_destroy((m))) \ - Perl_croak_nocontext("panic: MUTEX_DESTROY"); \ + 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 { \ - if (pthread_cond_init((c), pthread_condattr_default)) \ - Perl_croak_nocontext("panic: COND_INIT"); \ + 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 { \ - if (pthread_cond_signal((c))) \ - Perl_croak_nocontext("panic: COND_SIGNAL"); \ + 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 { \ - if (pthread_cond_broadcast((c))) \ - Perl_croak_nocontext("panic: COND_BROADCAST"); \ + 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 { \ - if (pthread_cond_wait((c), (m))) \ - Perl_croak_nocontext("panic: COND_WAIT"); \ + 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 { \ - if (pthread_cond_destroy((c))) \ - Perl_croak_nocontext("panic: COND_DESTROY"); \ + 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 */ @@ -234,9 +286,11 @@ #ifndef DETACH # define DETACH(t) \ STMT_START { \ - if (pthread_detach((t)->self)) { \ + int _eC_; \ + if ((_eC_ = pthread_detach((t)->self))) { \ MUTEX_UNLOCK(&(t)->mutex); \ - Perl_croak_nocontext("panic: DETACH"); \ + Perl_croak_nocontext("panic: DETACH (%d) [%s:%d]", \ + _eC_, __FILE__, __LINE__); \ } \ } STMT_END #endif /* DETACH */ @@ -244,25 +298,38 @@ #ifndef JOIN # define JOIN(t, avp) \ STMT_START { \ - if (pthread_join((t)->self, (void**)(avp))) \ - Perl_croak_nocontext("panic: pthread_join"); \ + 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 -/* True for Tru64 version 4.0 and up as well */ -# if defined(__ALPHA) && (__VMS_VER >= 70000000) -# define PERL_GET_CONTEXT pthread_unchecked_getspecific_np(PL_thr_key) -# else -# define PERL_GET_CONTEXT pthread_getspecific(PL_thr_key) -# endif +# define PERL_GET_CONTEXT PTHREAD_GETSPECIFIC(PL_thr_key) #endif #ifndef PERL_SET_CONTEXT # define PERL_SET_CONTEXT(t) \ STMT_START { \ - if (pthread_setspecific(PL_thr_key, (void *)(t))) \ - Perl_croak_nocontext("panic: pthread_setspecific"); \ + 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 */ @@ -275,8 +342,8 @@ #ifndef ALLOC_THREAD_KEY # define ALLOC_THREAD_KEY \ STMT_START { \ - if (pthread_key_create(&PL_thr_key, 0)) { \ - PerlIO_printf(PerlIO_stderr(), "panic: pthread_key_create"); \ + if (pthread_key_create(&PL_thr_key, 0)) { \ + write(2, STR_WITH_LEN("panic: pthread_key_create failed\n")); \ exit(1); \ } \ } STMT_END @@ -289,67 +356,25 @@ } 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 */ -#if defined(USE_THREADS) - -/* Accessor for per-thread SVs */ -# define THREADSV(i) (thr->threadsvp[i]) - -/* - * LOCK_SV_MUTEX and UNLOCK_SV_MUTEX are performance-critical. Here, we - * try only locking them if there may be more than one thread in existence. - * Systems with very fast mutexes (and/or slow conditionals) may wish to - * remove the "if (threadnum) ..." test. - * XXX do NOT use C -- it sets up race conditions! - */ -# define LOCK_SV_MUTEX MUTEX_LOCK(&PL_sv_mutex) -# define UNLOCK_SV_MUTEX MUTEX_UNLOCK(&PL_sv_mutex) -# define LOCK_STRTAB_MUTEX MUTEX_LOCK(&PL_strtab_mutex) -# define UNLOCK_STRTAB_MUTEX MUTEX_UNLOCK(&PL_strtab_mutex) -# define LOCK_CRED_MUTEX MUTEX_LOCK(&PL_cred_mutex) -# define UNLOCK_CRED_MUTEX MUTEX_UNLOCK(&PL_cred_mutex) -# define LOCK_FDPID_MUTEX MUTEX_LOCK(&PL_fdpid_mutex) -# define UNLOCK_FDPID_MUTEX MUTEX_UNLOCK(&PL_fdpid_mutex) -# define LOCK_SV_LOCK_MUTEX MUTEX_LOCK(&PL_sv_lock_mutex) -# define UNLOCK_SV_LOCK_MUTEX MUTEX_UNLOCK(&PL_sv_lock_mutex) - -/* Values and macros for thr->flags */ -#define THRf_STATE_MASK 7 -#define THRf_R_JOINABLE 0 -#define THRf_R_JOINED 1 -#define THRf_R_DETACHED 2 -#define THRf_ZOMBIE 3 -#define THRf_DEAD 4 - -#define THRf_DID_DIE 8 - -/* ThrSTATE(t) and ThrSETSTATE(t) must only be called while holding t->mutex */ -#define ThrSTATE(t) ((t)->flags & THRf_STATE_MASK) -#define ThrSETSTATE(t, s) STMT_START { \ - (t)->flags &= ~THRf_STATE_MASK; \ - (t)->flags |= (s); \ - DEBUG_S(PerlIO_printf(Perl_debug_log, \ - "thread %p set to state %d\n", (t), (s))); \ - } STMT_END - -typedef struct condpair { - perl_mutex mutex; /* Protects all other fields */ - perl_cond owner_cond; /* For when owner changes at all */ - perl_cond cond; /* For cond_signal and cond_broadcast */ - Thread owner; /* Currently owning thread */ -} condpair_t; +# define LOCK_DOLLARZERO_MUTEX MUTEX_LOCK(&PL_dollarzero_mutex) +# define UNLOCK_DOLLARZERO_MUTEX MUTEX_UNLOCK(&PL_dollarzero_mutex) -#define MgMUTEXP(mg) (&((condpair_t *)(mg->mg_ptr))->mutex) -#define MgOWNERCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->owner_cond) -#define MgCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->cond) -#define MgOWNER(mg) ((condpair_t *)(mg->mg_ptr))->owner - -#endif /* USE_THREADS */ -#endif /* USE_THREADS || USE_ITHREADS */ +#endif /* USE_ITHREADS */ #ifndef MUTEX_LOCK # define MUTEX_LOCK(m) @@ -387,44 +412,12 @@ typedef struct condpair { # define COND_DESTROY(c) #endif -#ifndef LOCK_SV_MUTEX -# define LOCK_SV_MUTEX -#endif - -#ifndef UNLOCK_SV_MUTEX -# define UNLOCK_SV_MUTEX -#endif - -#ifndef LOCK_STRTAB_MUTEX -# define LOCK_STRTAB_MUTEX -#endif - -#ifndef UNLOCK_STRTAB_MUTEX -# define UNLOCK_STRTAB_MUTEX -#endif - -#ifndef LOCK_CRED_MUTEX -# define LOCK_CRED_MUTEX +#ifndef LOCK_DOLLARZERO_MUTEX +# define LOCK_DOLLARZERO_MUTEX #endif -#ifndef UNLOCK_CRED_MUTEX -# define UNLOCK_CRED_MUTEX -#endif - -#ifndef LOCK_FDPID_MUTEX -# define LOCK_FDPID_MUTEX -#endif - -#ifndef UNLOCK_FDPID_MUTEX -# define UNLOCK_FDPID_MUTEX -#endif - -#ifndef LOCK_SV_LOCK_MUTEX -# define LOCK_SV_LOCK_MUTEX -#endif - -#ifndef UNLOCK_SV_LOCK_MUTEX -# define UNLOCK_SV_LOCK_MUTEX +#ifndef UNLOCK_DOLLARZERO_MUTEX +# define UNLOCK_DOLLARZERO_MUTEX #endif /* THR, SET_THR, and dTHR are there for compatibility with old versions */ @@ -443,3 +436,13 @@ typedef struct condpair { #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: + */