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qsbr: use defines to clarify code.
[urcu.git]
/
urcu-qsbr.c
diff --git
a/urcu-qsbr.c
b/urcu-qsbr.c
index 3f21be3160731979b6f39455b1202ccf00849237..5f9e46dc28f6f88d11004c95acda61bd24643543 100644
(file)
--- a/
urcu-qsbr.c
+++ b/
urcu-qsbr.c
@@
-42,20
+42,20
@@
pthread_mutex_t urcu_mutex = PTHREAD_MUTEX_INITIALIZER;
/*
* Global grace period counter.
*/
/*
* Global grace period counter.
*/
-
long urcu_gp_ctr = 0
;
+
unsigned long urcu_gp_ctr = RCU_GP_ONLINE
;
/*
* Written to only by each individual reader. Read by both the reader and the
* writers.
*/
/*
* Written to only by each individual reader. Read by both the reader and the
* writers.
*/
-long __thread rcu_reader_qs_gp;
+
unsigned
long __thread rcu_reader_qs_gp;
/* Thread IDs of registered readers */
#define INIT_NUM_THREADS 4
struct reader_registry {
pthread_t tid;
/* Thread IDs of registered readers */
#define INIT_NUM_THREADS 4
struct reader_registry {
pthread_t tid;
- long *rcu_reader_qs_gp;
+
unsigned
long *rcu_reader_qs_gp;
};
#ifdef DEBUG_YIELD
};
#ifdef DEBUG_YIELD
@@
-139,9
+139,9
@@
static void wait_for_quiescent_state(void)
void synchronize_rcu(void)
{
void synchronize_rcu(void)
{
-
int
was_online;
+
unsigned long
was_online;
- was_online = rcu_reader_qs_gp
& 1
;
+ was_online = rcu_reader_qs_gp;
/*
* Mark the writer thread offline to make sure we don't wait for
/*
* Mark the writer thread offline to make sure we don't wait for
@@
-153,12
+153,12
@@
void synchronize_rcu(void)
STORE_SHARED(rcu_reader_qs_gp, 0);
internal_urcu_lock();
STORE_SHARED(rcu_reader_qs_gp, 0);
internal_urcu_lock();
- STORE_SHARED(urcu_gp_ctr, urcu_gp_ctr +
2
);
+ STORE_SHARED(urcu_gp_ctr, urcu_gp_ctr +
RCU_GP_COUNT
);
wait_for_quiescent_state();
internal_urcu_unlock();
if (was_online)
wait_for_quiescent_state();
internal_urcu_unlock();
if (was_online)
- _STORE_SHARED(rcu_reader_qs_gp, LOAD_SHARED(urcu_gp_ctr)
+ 1
);
+ _STORE_SHARED(rcu_reader_qs_gp, LOAD_SHARED(urcu_gp_ctr));
smp_mb();
}
smp_mb();
}
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