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* sysdeps/powerpc/pspinlock.c (__pthread_spin_lock): Implement. (__pthread_spin_trylock): Implement. (__pthread_spin_unlock): Implement. (__pthread_spin_init): Implement. (__pthread_spin_destroy): Implement.

Browse Source 
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.

	really append the entry.
This commit is contained in:
Geoff Keating
2000-06-12 07:00:35 +00:00
parent 38677aced0
commit 2b72ebac3f
2 changed files with 18 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
linuxthreads/ChangeLog
View File

@@ -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> 2000-06-10 Ulrich Drepper <drepper@redhat.com>
* sysdeps/pthread/timer_routines.c (list_append): Little fix to * 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> 2000-06-10 Andreas Jaeger <aj@suse.de>

13
linuxthreads/sysdeps/powerpc/pspinlock.c
View File

@@ -19,12 +19,15 @@
#include <errno.h> #include <errno.h>
#include <pthread.h> #include <pthread.h>
#include <pt-machine.h>
int int
__pthread_spin_lock (pthread_spinlock_t *lock) __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) weak_alias (__pthread_spin_lock, pthread_spin_lock)
@@ -32,7 +35,7 @@ weak_alias (__pthread_spin_lock, pthread_spin_lock)
int int
__pthread_spin_trylock (pthread_spinlock_t *lock) __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) weak_alias (__pthread_spin_trylock, pthread_spin_trylock)
@@ -40,7 +43,9 @@ weak_alias (__pthread_spin_trylock, pthread_spin_trylock)
int int
__pthread_spin_unlock (pthread_spinlock_t *lock) __pthread_spin_unlock (pthread_spinlock_t *lock)
{ {
XXX MEMORY_BARRIER ();
*lock = 0;
return 0;
} }
weak_alias (__pthread_spin_unlock, pthread_spin_unlock) 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 /* We can ignore the `pshared' parameter. Since we are busy-waiting
all processes which can access the memory location `lock' points all processes which can access the memory location `lock' points
to can use the spinlock. */ to can use the spinlock. */
XXX *lock = 1;
return 0; return 0;
} }
weak_alias (__pthread_spin_init, pthread_spin_init) weak_alias (__pthread_spin_init, pthread_spin_init)