bfee0724e0
* config/linux/wait.h (do_spin): New inline, largely copied from do_wait, just don't do futex_wait here, instead return true if it should be done. (do_wait): Implement using do_spin. * config/linux/mutex.h (gomp_mutex_lock_slow): Add an int argument to prototype. (gomp_mutex_lock): Use __sync_val_compare_and_swap instead of __sync_bool_compare_and_swap, pass the oldval to gomp_mutex_lock_slow. * config/linux/mutex.c (gomp_mutex_lock_slow): Add oldval argument. If all mutex contenders are just spinning and not sleeping, don't change state to 2 unnecessarily. Optimize the loop when state has already become 2 to use just one atomic operation per loop instead of two. * config/linux/ia64/mutex.h (gomp_mutex_lock_slow): Add an int argument to prototype. (gomp_mutex_lock): Use __sync_val_compare_and_swap instead of __sync_bool_compare_and_swap, pass the oldval to gomp_mutex_lock_slow. From-SVN: r176326 |
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| .. | ||
| alpha | ||
| arm | ||
| ia64 | ||
| mips | ||
| powerpc | ||
| s390 | ||
| sparc | ||
| x86 | ||
| affinity.c | ||
| bar.c | ||
| bar.h | ||
| futex.h | ||
| lock.c | ||
| mutex.c | ||
| mutex.h | ||
| omp-lock.h | ||
| proc.c | ||
| ptrlock.c | ||
| ptrlock.h | ||
| sem.c | ||
| sem.h | ||
| wait.h | ||