diff options
Diffstat (limited to 'linuxthreads')
| -rw-r--r-- | linuxthreads/ChangeLog | 10 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/powerpc/pspinlock.c | 13 |
2 files changed, 18 insertions, 5 deletions
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog index c508e8db79..c948fe3993 100644 --- a/linuxthreads/ChangeLog +++ b/linuxthreads/ChangeLog @@ -1,7 +1,15 @@ +2000-06-11 Geoff Keating <geoffk@cygnus.com> + + * sysdeps/powerpc/pspinlock.c (__pthread_spin_lock): Implement. + (__pthread_spin_trylock): Implement. + (__pthread_spin_unlock): Implement. + (__pthread_spin_init): Implement. + (__pthread_spin_destroy): Implement. + 2000-06-10 Ulrich Drepper <drepper@redhat.com> * sysdeps/pthread/timer_routines.c (list_append): Little fix to - reall append the entry. + really append the entry. 2000-06-10 Andreas Jaeger <aj@suse.de> diff --git a/linuxthreads/sysdeps/powerpc/pspinlock.c b/linuxthreads/sysdeps/powerpc/pspinlock.c index 6858ee1cf8..77cad0c8af 100644 --- a/linuxthreads/sysdeps/powerpc/pspinlock.c +++ b/linuxthreads/sysdeps/powerpc/pspinlock.c @@ -19,12 +19,15 @@ #include <errno.h> #include <pthread.h> +#include <pt-machine.h> int __pthread_spin_lock (pthread_spinlock_t *lock) { - XXX + while (! __compare_and_swap ((long int *)lock, 0, 1)) + ; + return 0; } weak_alias (__pthread_spin_lock, pthread_spin_lock) @@ -32,7 +35,7 @@ weak_alias (__pthread_spin_lock, pthread_spin_lock) int __pthread_spin_trylock (pthread_spinlock_t *lock) { - XXX + return __compare_and_swap ((long int *)lock, 0, 1) ? 0 : EBUSY; } weak_alias (__pthread_spin_trylock, pthread_spin_trylock) @@ -40,7 +43,9 @@ weak_alias (__pthread_spin_trylock, pthread_spin_trylock) int __pthread_spin_unlock (pthread_spinlock_t *lock) { - XXX + MEMORY_BARRIER (); + *lock = 0; + return 0; } weak_alias (__pthread_spin_unlock, pthread_spin_unlock) @@ -51,7 +56,7 @@ __pthread_spin_init (pthread_spinlock_t *lock, int pshared) /* We can ignore the `pshared' parameter. Since we are busy-waiting all processes which can access the memory location `lock' points to can use the spinlock. */ - XXX + *lock = 1; return 0; } weak_alias (__pthread_spin_init, pthread_spin_init) |