diff options
Diffstat (limited to 'systems/texlive/tlnet/tlpkg/tlperl/lib/CORE/thread.h')
-rw-r--r-- | systems/texlive/tlnet/tlpkg/tlperl/lib/CORE/thread.h | 437 |
1 files changed, 437 insertions, 0 deletions
diff --git a/systems/texlive/tlnet/tlpkg/tlperl/lib/CORE/thread.h b/systems/texlive/tlnet/tlpkg/tlperl/lib/CORE/thread.h new file mode 100644 index 0000000000..2603d549f5 --- /dev/null +++ b/systems/texlive/tlnet/tlpkg/tlperl/lib/CORE/thread.h @@ -0,0 +1,437 @@ +/* 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> +#elif defined(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 + +#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) NOOP + +#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 +# elif defined(HAS_SCHED_YIELD) +# define YIELD sched_yield() +# elif defined(HAS_PTHREAD_YIELD) + /* pthread_yield(NULL) platforms are expected + * to have #defined YIELD for themselves. */ +# define YIELD pthread_yield() +# 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) NOOP +#endif + +#ifndef MUTEX_UNLOCK +# define MUTEX_UNLOCK(m) NOOP +#endif + +#ifndef MUTEX_INIT +# define MUTEX_INIT(m) NOOP +#endif + +#ifndef MUTEX_DESTROY +# define MUTEX_DESTROY(m) NOOP +#endif + +#ifndef COND_INIT +# define COND_INIT(c) NOOP +#endif + +#ifndef COND_SIGNAL +# define COND_SIGNAL(c) NOOP +#endif + +#ifndef COND_BROADCAST +# define COND_BROADCAST(c) NOOP +#endif + +#ifndef COND_WAIT +# define COND_WAIT(c, m) NOOP +#endif + +#ifndef COND_DESTROY +# define COND_DESTROY(c) NOOP +#endif + +#ifndef LOCK_DOLLARZERO_MUTEX +# define LOCK_DOLLARZERO_MUTEX NOOP +#endif + +#ifndef UNLOCK_DOLLARZERO_MUTEX +# define UNLOCK_DOLLARZERO_MUTEX NOOP +#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: + */ |