diff options
Diffstat (limited to 'nptl')
| -rw-r--r-- | nptl/ChangeLog | 8 | ||||
| -rw-r--r-- | nptl/sysdeps/pthread/bits/libc-lock.h | 15 | ||||
| -rw-r--r-- | nptl/tst-initializers1.c | 7 |
3 files changed, 28 insertions, 2 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog index 5d11b6a..b7c03dc 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -1,3 +1,11 @@ +2007-10-10 Jakub Jelinek <jakub@redhat.com> + + * sysdeps/pthread/bits/libc-lock.h (__libc_rwlock_init): Inside of + libc.so just clear NAME. + (__libc_rwlock_fini): Nop inside of libc.so. + * tst-initializers1.c (main): Test if PTHREAD_RWLOCK_INITIALIZER is + all zeros. + 2007-09-02 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S diff --git a/nptl/sysdeps/pthread/bits/libc-lock.h b/nptl/sysdeps/pthread/bits/libc-lock.h index 45eba06..a597f3b 100644 --- a/nptl/sysdeps/pthread/bits/libc-lock.h +++ b/nptl/sysdeps/pthread/bits/libc-lock.h @@ -172,8 +172,15 @@ typedef pthread_key_t __libc_key_t; # define __libc_lock_init(NAME) \ __libc_maybe_call (__pthread_mutex_init, (&(NAME), NULL), 0) #endif -#define __libc_rwlock_init(NAME) \ +#if defined SHARED && !defined NOT_IN_libc +/* ((NAME) = (__libc_rwlock_t) PTHREAD_RWLOCK_INITIALIZER, 0) is + inefficient. */ +# define __libc_rwlock_init(NAME) \ + (__builtin_memset (&(NAME), '\0', sizeof (NAME)), 0) +#else +# define __libc_rwlock_init(NAME) \ __libc_maybe_call (__pthread_rwlock_init, (&(NAME), NULL), 0) +#endif /* Same as last but this time we initialize a recursive mutex. */ #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) @@ -214,8 +221,12 @@ typedef pthread_key_t __libc_key_t; # define __libc_lock_fini(NAME) \ __libc_maybe_call (__pthread_mutex_destroy, (&(NAME)), 0) #endif -#define __libc_rwlock_fini(NAME) \ +#if defined SHARED && !defined NOT_IN_libc +# define __libc_rwlock_fini(NAME) ((void) 0) +#else +# define __libc_rwlock_fini(NAME) \ __libc_maybe_call (__pthread_rwlock_destroy, (&(NAME)), 0) +#endif /* Finalize recursive named lock. */ #if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread) diff --git a/nptl/tst-initializers1.c b/nptl/tst-initializers1.c index 9036e6e..d30e885 100644 --- a/nptl/tst-initializers1.c +++ b/nptl/tst-initializers1.c @@ -47,5 +47,12 @@ main (void) if (rwl_writer.__data.__flags != PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP) return 6; + /* <bits/libc-lock.h> __libc_rwlock_init definition for libc.so + relies on PTHREAD_RWLOCK_INITIALIZER being all zeros. If + that ever changes, <bits/libc-lock.h> needs updating. */ + size_t i; + for (i = 0; i < sizeof (rwl_normal); i++) + if (((char *) &rwl_normal)[i] != '\0') + return 7; return 0; } |