X-Git-Url: http://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=urcu.c;h=5e8c6127a8c2f6413d56e95f66eba8c827595c85;hp=ffdab3c2fc1eacbad2c4e73f5e89e83261fdb8d5;hb=25cc6d18cb2fc9964adf2c1edb53c5539e279382;hpb=f02bbafc4513879a545b6b5ad932ea5ff220230d diff --git a/urcu.c b/urcu.c index ffdab3c..5e8c612 100644 --- a/urcu.c +++ b/urcu.c @@ -121,7 +121,7 @@ static void mutex_unlock(pthread_mutex_t *mutex) } #ifdef RCU_MEMBARRIER -static void smp_mb_heavy(void) +static void smp_mb_master(int group) { if (likely(has_sys_membarrier)) membarrier(MEMBARRIER_EXPEDITED); @@ -131,7 +131,7 @@ static void smp_mb_heavy(void) #endif #ifdef RCU_MB -static void smp_mb_heavy(void) +static void smp_mb_master(int group) { smp_mb(); } @@ -181,7 +181,7 @@ static void force_mb_all_readers(void) smp_mb(); /* read ->need_mb before ending the barrier */ } -static void smp_mb_heavy(void) +static void smp_mb_master(int group) { force_mb_all_readers(); } @@ -193,7 +193,7 @@ static void smp_mb_heavy(void) static void wait_gp(void) { /* Read reader_gp before read futex */ - smp_mb_heavy(); + smp_mb_master(RCU_MB_GROUP); if (uatomic_read(&gp_futex) == -1) futex_async(&gp_futex, FUTEX_WAIT, -1, NULL, NULL, 0); @@ -230,7 +230,7 @@ void update_counter_and_wait(void) if (wait_loops == RCU_QS_ACTIVE_ATTEMPTS) { uatomic_dec(&gp_futex); /* Write futex before read reader_gp */ - smp_mb_heavy(); + smp_mb_master(RCU_MB_GROUP); } list_for_each_entry_safe(index, tmp, ®istry, head) { @@ -242,7 +242,7 @@ void update_counter_and_wait(void) if (list_empty(®istry)) { if (wait_loops == RCU_QS_ACTIVE_ATTEMPTS) { /* Read reader_gp before write futex */ - smp_mb_heavy(); + smp_mb_master(RCU_MB_GROUP); uatomic_set(&gp_futex, 0); } break; @@ -260,7 +260,7 @@ void update_counter_and_wait(void) if (list_empty(®istry)) { if (wait_loops == RCU_QS_ACTIVE_ATTEMPTS) { /* Read reader_gp before write futex */ - smp_mb_heavy(); + smp_mb_master(RCU_MB_GROUP); uatomic_set(&gp_futex, 0); } break; @@ -270,7 +270,7 @@ void update_counter_and_wait(void) wait_gp(); break; /* only escape switch */ case KICK_READER_LOOPS: - smp_mb_heavy(); + smp_mb_master(RCU_MB_GROUP); wait_loops = 0; break; /* only escape switch */ default: @@ -294,7 +294,7 @@ void synchronize_rcu(void) * where new ptr points to. Must be done within rcu_gp_lock because it * iterates on reader threads.*/ /* Write new ptr before changing the qparity */ - smp_mb_heavy(); + smp_mb_master(RCU_MB_GROUP); /* * Wait for previous parity to be empty of readers. @@ -324,7 +324,7 @@ void synchronize_rcu(void) /* Finish waiting for reader threads before letting the old ptr being * freed. Must be done within rcu_gp_lock because it iterates on reader * threads. */ - smp_mb_heavy(); + smp_mb_master(RCU_MB_GROUP); out: mutex_unlock(&rcu_gp_lock); }