diff options
Diffstat (limited to 'src/lib/sync.C')
| -rw-r--r-- | src/lib/sync.C | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/lib/sync.C b/src/lib/sync.C index 233801ceb..d0d15aeb4 100644 --- a/src/lib/sync.C +++ b/src/lib/sync.C @@ -85,24 +85,28 @@ void mutex_destroy(mutex_t *& i_mutex) void mutex_lock(mutex_t * i_mutex) { -#ifdef __IDEA_1 + uint64_t l_count = __sync_val_compare_and_swap(&(i_mutex->iv_val),0,1); if(l_count != 0) { if (l_count != 2) + { + lwsync(); l_count = __sync_lock_test_and_set(&(i_mutex->iv_val), 2); + } while( l_count != 0 ) { futex_wait( &(i_mutex->iv_val), 2); + lwsync(); l_count = __sync_lock_test_and_set(&(i_mutex->iv_val),2); // if more than one thread gets out - one continues while // the rest get blocked again. } } -#endif +#ifdef __IDEA_2 // Idea # 2 while(1) { @@ -123,6 +127,7 @@ void mutex_lock(mutex_t * i_mutex) } } } +#endif return; } |
