diff options
Diffstat (limited to 'linuxthreads')
| -rw-r--r-- | linuxthreads/ChangeLog | 17 | ||||
| -rw-r--r-- | linuxthreads/Versions | 9 | ||||
| -rw-r--r-- | linuxthreads/pthread.c | 17 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/pthread/bits/libc-lock.h | 46 |
4 files changed, 62 insertions, 27 deletions
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog index 5e84a8b6e1..71b00fa253 100644 --- a/linuxthreads/ChangeLog +++ b/linuxthreads/ChangeLog @@ -1,3 +1,20 @@ +2002-10-09 Roland McGrath <roland@redhat.com> + + * sysdeps/pthread/bits/libc-lock.h (__libc_maybe_call): New macro. + Under [__PIC__], call the function via the pointer fetched for + comparison rather than a call by name that uses the PLT. + (__libc_lock_init, __libc_rwlock_init, __libc_lock_fini) + (__libc_rwlock_fini, __libc_lock_lock, __libc_rwlock_rdlock) + (__libc_rwlock_wrlock, __libc_lock_trylock, __libc_rwlock_tryrdlock) + (__libc_rwlock_trywrlock, __libc_lock_unlock, __libc_rwlock_unlock) + (__libc_key_create, __libc_getspecific, __libc_setspecific) + (__libc_atfork): Use it. + + * pthread.c [SHARED] (__libc_dl_error_tsd): New function. + (pthread_initialize) [SHARED]: Set _dl_error_catch_tsd to that. + * Versions (libc: GLIBC_PRIVATE): Add __libc_dl_error_tsd. + (ld: GLIBC_PRIVATE): Set removed. + 2002-10-11 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/execve.c: New file. diff --git a/linuxthreads/Versions b/linuxthreads/Versions index 4e4c6cc55e..03a5811898 100644 --- a/linuxthreads/Versions +++ b/linuxthreads/Versions @@ -21,14 +21,7 @@ libc { # Internal libc interface to libpthread __libc_internal_tsd_get; __libc_internal_tsd_set; __libc_internal_tsd_address; __libc_alloca_cutoff; - } -} - -ld { - GLIBC_PRIVATE { - # Internal libc interface to libpthread - __libc_internal_tsd_get; __libc_internal_tsd_set; - __libc_internal_tsd_address; + __libc_dl_error_tsd; } } diff --git a/linuxthreads/pthread.c b/linuxthreads/pthread.c index e2042bdb74..f119619602 100644 --- a/linuxthreads/pthread.c +++ b/linuxthreads/pthread.c @@ -418,6 +418,19 @@ __pthread_init_max_stacksize(void) } } +#ifdef SHARED +# if USE___THREAD +/* When using __thread for this, we do it in libc so as not + to give libpthread its own TLS segment just for this. */ +extern void **__libc_dl_error_tsd (void) __attribute__ ((const)); +# else +static void ** __attribute__ ((const)) +__libc_dl_error_tsd (void) +{ + return &thread_self ()->p_libc_specific[_LIBC_TSD_KEY_DL_ERROR]; +} +# endif +#endif static void pthread_initialize(void) { @@ -498,6 +511,10 @@ static void pthread_initialize(void) __on_exit (pthread_onexit_process, NULL); /* How many processors. */ __pthread_smp_kernel = is_smp_system (); + +#ifdef SHARED + GL(dl_error_catch_tsd) = &__libc_dl_error_tsd; +#endif } void __pthread_initialize(void) diff --git a/linuxthreads/sysdeps/pthread/bits/libc-lock.h b/linuxthreads/sysdeps/pthread/bits/libc-lock.h index 4e884a030e..c25c0385e9 100644 --- a/linuxthreads/sysdeps/pthread/bits/libc-lock.h +++ b/linuxthreads/sysdeps/pthread/bits/libc-lock.h @@ -1,5 +1,6 @@ /* libc-internal interface for mutex locks. LinuxThreads version. - Copyright (C) 1996,1997,1998,1999,2000,2001 Free Software Foundation, Inc. + Copyright (C) 1996,1997,1998,1999,2000,2001,2002 + Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -81,12 +82,21 @@ typedef pthread_key_t __libc_key_t; #define _LIBC_LOCK_RECURSIVE_INITIALIZER \ {PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP} +#ifdef __PIC__ +#define __libc_maybe_call(FUNC, ARGS, ELSE) \ + (__extension__ ({ __typeof (FUNC) *_fn = (FUNC); \ + _fn != NULL ? (*_fn) ARGS : ELSE; })) +#else +#define __libc_maybe_call(FUNC, ARGS, ELSE) \ + (FUNC != NULL ? FUNC ARGS : ELSE) +#endif + /* Initialize the named lock variable, leaving it in a consistent, unlocked state. */ #define __libc_lock_init(NAME) \ - (__pthread_mutex_init != NULL ? __pthread_mutex_init (&(NAME), NULL) : 0); + (__libc_maybe_call (__pthread_mutex_init, (&(NAME), NULL), 0)) #define __libc_rwlock_init(NAME) \ - (__pthread_rwlock_init != NULL ? __pthread_rwlock_init (&(NAME), NULL) : 0); + (__libc_maybe_call (__pthread_rwlock_init, (&(NAME), NULL), 0)); /* Same as last but this time we initialize a recursive mutex. */ #define __libc_lock_init_recursive(NAME) \ @@ -105,42 +115,40 @@ typedef pthread_key_t __libc_key_t; used again until __libc_lock_init is called again on it. This must be called on a lock variable before the containing storage is reused. */ #define __libc_lock_fini(NAME) \ - (__pthread_mutex_destroy != NULL ? __pthread_mutex_destroy (&(NAME)) : 0); + (__libc_maybe_call (__pthread_mutex_destroy, (&(NAME)), 0)); #define __libc_rwlock_fini(NAME) \ - (__pthread_rwlock_destroy != NULL ? __pthread_rwlock_destroy (&(NAME)) : 0); + (__libc_maybe_call (__pthread_rwlock_destroy, (&(NAME)), 0)); /* Finalize recursive named lock. */ #define __libc_lock_fini_recursive(NAME) __libc_lock_fini ((NAME).mutex) /* Lock the named lock variable. */ #define __libc_lock_lock(NAME) \ - (__pthread_mutex_lock != NULL ? __pthread_mutex_lock (&(NAME)) : 0); + (__libc_maybe_call (__pthread_mutex_lock, (&(NAME)), 0)); #define __libc_rwlock_rdlock(NAME) \ - (__pthread_rwlock_rdlock != NULL ? __pthread_rwlock_rdlock (&(NAME)) : 0); + (__libc_maybe_call (__pthread_rwlock_rdlock, (&(NAME)), 0)); #define __libc_rwlock_wrlock(NAME) \ - (__pthread_rwlock_wrlock != NULL ? __pthread_rwlock_wrlock (&(NAME)) : 0); + (__libc_maybe_call (__pthread_rwlock_wrlock, (&(NAME)), 0)); /* Lock the recursive named lock variable. */ #define __libc_lock_lock_recursive(NAME) __libc_lock_lock ((NAME).mutex) /* Try to lock the named lock variable. */ #define __libc_lock_trylock(NAME) \ - (__pthread_mutex_trylock != NULL ? __pthread_mutex_trylock (&(NAME)) : 0) + (__libc_maybe_call (__pthread_mutex_trylock, (&(NAME)), 0)) #define __libc_rwlock_tryrdlock(NAME) \ - (__pthread_rwlock_tryrdlock != NULL \ - ? __pthread_rwlock_tryrdlock (&(NAME)) : 0) + (__libc_maybe_call (__pthread_rwlock_tryrdlock, (&(NAME)), 0)) #define __libc_rwlock_trywrlock(NAME) \ - (__pthread_rwlock_trywrlock != NULL \ - ? __pthread_rwlock_trywrlock (&(NAME)) : 0) + (__libc_maybe_call (__pthread_rwlock_trywrlock, (&(NAME)), 0)) /* Try to lock the recursive named lock variable. */ #define __libc_lock_trylock_recursive(NAME) __libc_lock_trylock ((NAME).mutex) /* Unlock the named lock variable. */ #define __libc_lock_unlock(NAME) \ - (__pthread_mutex_unlock != NULL ? __pthread_mutex_unlock (&(NAME)) : 0); + (__libc_maybe_call (__pthread_mutex_unlock, (&(NAME)), 0)); #define __libc_rwlock_unlock(NAME) \ - (__pthread_rwlock_unlock != NULL ? __pthread_rwlock_unlock (&(NAME)) : 0); + (__libc_maybe_call (__pthread_rwlock_unlock, (&(NAME)), 0)); /* Unlock the recursive named lock variable. */ #define __libc_lock_unlock_recursive(NAME) __libc_lock_unlock ((NAME).mutex) @@ -192,20 +200,20 @@ typedef pthread_key_t __libc_key_t; /* Create thread-specific key. */ #define __libc_key_create(KEY, DESTRUCTOR) \ - (__pthread_key_create != NULL ? __pthread_key_create (KEY, DESTRUCTOR) : 1) + (__libc_maybe_call (__pthread_key_create, (KEY, DESTRUCTOR), 1)) /* Get thread-specific data. */ #define __libc_getspecific(KEY) \ - (__pthread_getspecific != NULL ? __pthread_getspecific (KEY) : NULL) + (__libc_maybe_call (__pthread_getspecific, (KEY), NULL)) /* Set thread-specific data. */ #define __libc_setspecific(KEY, VALUE) \ - (__pthread_setspecific != NULL ? __pthread_setspecific (KEY, VALUE) : 0) + (__libc_maybe_call (__pthread_setspecific, (KEY, VALUE), 0)) /* Register handlers to execute before and after `fork'. */ #define __libc_atfork(PREPARE, PARENT, CHILD) \ - (__pthread_atfork != NULL ? __pthread_atfork (PREPARE, PARENT, CHILD) : 0) + (__libc_maybe_call (__pthread_atfork, (PREPARE, PARENT, CHILD), 0)) /* Functions that are used by this file and are internal to the GNU C library. */ |