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| author | Ulrich Drepper <drepper@redhat.com> | 2001-08-30 02:13:26 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2001-08-30 02:13:26 +0000 |
| commit | 746802f20fae7bd377ce5d7aa9114357af48e178 (patch) | |
| tree | f8e4c7456aedf677054c4491264435137daa0d64 /linuxthreads/internals.h | |
| parent | 6c3ebebd1eddb7041248125fa5e228380400c436 (diff) | |
| download | glibc-746802f20fae7bd377ce5d7aa9114357af48e178.tar.gz glibc-746802f20fae7bd377ce5d7aa9114357af48e178.tar.xz glibc-746802f20fae7bd377ce5d7aa9114357af48e178.zip | |
Update.
2001-08-29 Ulrich Drepper <drepper@redhat.com> * spinlock.c (__pthread_lock): Top max_count value with MAX_ADAPTIVE_SPIN_COUNT. * internals.h (MAX_ADAPTIVE_SPIN_COUNT): Define if not already done. * sysdeps/i386/i686/pt-machine.h (BUSY_WAIT_NOP): New macro to help P4.
Diffstat (limited to 'linuxthreads/internals.h')
| -rw-r--r-- | linuxthreads/internals.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/linuxthreads/internals.h b/linuxthreads/internals.h index d5b469b347..ae49266278 100644 --- a/linuxthreads/internals.h +++ b/linuxthreads/internals.h @@ -414,6 +414,13 @@ static inline pthread_descr thread_self (void) #define MAX_SPIN_COUNT 50 #endif +/* Max number of times the spinlock in the adaptive mutex implementation + spins actively on SMP systems. */ + +#ifndef MAX_ADAPTIVE_SPIN_COUNT +#define MAX_ADAPTIVE_SPIN_COUNT 100 +#endif + /* Duration of sleep (in nanoseconds) when we can't acquire a spinlock after MAX_SPIN_COUNT iterations of sched_yield(). With the 2.0 and 2.1 kernels, this MUST BE > 2ms. |