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

@ -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)