Cleanup: doc/examples makefile

[urcu.git] / tests / rcutorture.h

diff --git a/tests/rcutorture.h b/tests/rcutorture.h
index 4dac2f224faa9605f309195bea5e62e818080da0..f8548d811ed8980061716cc797a63524d97524a4 100644 (file)
--- a/tests/rcutorture.h
+++ b/tests/rcutorture.h
@@ -56,7 +56,7 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Copyright (c) 2008 Paul E. McKenney, IBM Corporation.
  */
@@ -65,6 +65,8 @@
  * Test variables.
  */
 
+#include <stdlib.h>
+
 DEFINE_PER_THREAD(long long, n_reads_pt);
 DEFINE_PER_THREAD(long long, n_updates_pt);
 
@@ -77,7 +79,8 @@ char argsbuf[64];
 #define GOFLAG_RUN  1
 #define GOFLAG_STOP 2
 
-int goflag __attribute__((__aligned__(CAA_CACHE_LINE_SIZE))) = GOFLAG_INIT;
+volatile int goflag __attribute__((__aligned__(CAA_CACHE_LINE_SIZE)))
+        = GOFLAG_INIT;
 
 #define RCU_READ_RUN 1000
 
@@ -116,6 +119,7 @@ int goflag __attribute__((__aligned__(CAA_CACHE_LINE_SIZE))) = GOFLAG_INIT;
 
 void *rcu_read_perf_test(void *arg)
 {
+       struct call_rcu_data *crdp;
        int i;
        int me = (long)arg;
        long long n_reads_local = 0;
@@ -123,9 +127,10 @@ void *rcu_read_perf_test(void *arg)
        rcu_register_thread();
        run_on(me);
        uatomic_inc(&nthreadsrunning);
+       put_thread_offline();
        while (goflag == GOFLAG_INIT)
                poll(NULL, 0, 1);
-       mark_rcu_quiescent_state();
+       put_thread_online();
        while (goflag == GOFLAG_RUN) {
                for (i = 0; i < RCU_READ_RUN; i++) {
                        rcu_read_lock();
@@ -138,6 +143,9 @@ void *rcu_read_perf_test(void *arg)
        }
        __get_thread_var(n_reads_pt) += n_reads_local;
        put_thread_offline();
+       crdp = get_thread_call_rcu_data();
+       set_thread_call_rcu_data(NULL);
+       call_rcu_data_free(crdp);
        rcu_unregister_thread();
 
        return (NULL);
@@ -147,6 +155,16 @@ void *rcu_update_perf_test(void *arg)
 {
        long long n_updates_local = 0;
 
+       if ((random() & 0xf00) == 0) {
+               struct call_rcu_data *crdp;
+
+               crdp = create_call_rcu_data(0, -1);
+               if (crdp != NULL) {
+                       fprintf(stderr,
+                               "Using per-thread call_rcu() worker.\n");
+                       set_thread_call_rcu_data(crdp);
+               }
+       }
        uatomic_inc(&nthreadsrunning);
        while (goflag == GOFLAG_INIT)
                poll(NULL, 0, 1);
@@ -191,6 +209,10 @@ void perftestrun(int nthreads, int nreaders, int nupdaters)
                (double)n_reads),
               ((duration * 1000*1000*1000.*(double)nupdaters) /
                (double)n_updates));
+       if (get_cpu_call_rcu_data(0)) {
+               fprintf(stderr, "Deallocating per-CPU call_rcu threads.\n");
+               free_all_cpu_call_rcu_data();
+       }
        exit(0);
 }
 
@@ -265,9 +287,10 @@ void *rcu_read_stress_test(void *arg)
        int pc;
 
        rcu_register_thread();
+       put_thread_offline();
        while (goflag == GOFLAG_INIT)
                poll(NULL, 0, 1);
-       mark_rcu_quiescent_state();
+       put_thread_online();
        while (goflag == GOFLAG_RUN) {
                rcu_read_lock();
                p = rcu_dereference(rcu_stress_current);
@@ -296,10 +319,30 @@ void *rcu_read_stress_test(void *arg)
        return (NULL);
 }
 
+static pthread_mutex_t call_rcu_test_mutex = PTHREAD_MUTEX_INITIALIZER;
+static pthread_cond_t call_rcu_test_cond = PTHREAD_COND_INITIALIZER;
+
+void rcu_update_stress_test_rcu(struct rcu_head *head)
+{
+       if (pthread_mutex_lock(&call_rcu_test_mutex) != 0) {
+               perror("pthread_mutex_lock");
+               exit(-1);
+       }
+       if (pthread_cond_signal(&call_rcu_test_cond) != 0) {
+               perror("pthread_cond_signal");
+               exit(-1);
+       }
+       if (pthread_mutex_unlock(&call_rcu_test_mutex) != 0) {
+               perror("pthread_mutex_unlock");
+               exit(-1);
+       }
+}
+
 void *rcu_update_stress_test(void *arg)
 {
        int i;
        struct rcu_stress *p;
+       struct rcu_head rh;
 
        while (goflag == GOFLAG_INIT)
                poll(NULL, 0, 1);
@@ -317,7 +360,24 @@ void *rcu_update_stress_test(void *arg)
                for (i = 0; i < RCU_STRESS_PIPE_LEN; i++)
                        if (i != rcu_stress_idx)
                                rcu_stress_array[i].pipe_count++;
-               synchronize_rcu();
+               if (n_updates & 0x1)
+                       synchronize_rcu();
+               else {
+                       if (pthread_mutex_lock(&call_rcu_test_mutex) != 0) {
+                               perror("pthread_mutex_lock");
+                               exit(-1);
+                       }
+                       call_rcu(&rh, rcu_update_stress_test_rcu);
+                       if (pthread_cond_wait(&call_rcu_test_cond,
+                                             &call_rcu_test_mutex) != 0) {
+                               perror("pthread_cond_wait");
+                               exit(-1);
+                       }
+                       if (pthread_mutex_unlock(&call_rcu_test_mutex) != 0) {
+                               perror("pthread_mutex_unlock");
+                               exit(-1);
+                       }
+               }
                n_updates++;
        }
        return NULL;
@@ -325,6 +385,16 @@ void *rcu_update_stress_test(void *arg)
 
 void *rcu_fake_update_stress_test(void *arg)
 {
+       if ((random() & 0xf00) == 0) {
+               struct call_rcu_data *crdp;
+
+               crdp = create_call_rcu_data(0, -1);
+               if (crdp != NULL) {
+                       fprintf(stderr,
+                               "Using per-thread call_rcu() worker.\n");
+                       set_thread_call_rcu_data(crdp);
+               }
+       }
        while (goflag == GOFLAG_INIT)
                poll(NULL, 0, 1);
        while (goflag == GOFLAG_RUN) {
@@ -376,6 +446,10 @@ void stresstest(int nreaders)
                printf(" %lld", sum);
        }
        printf("\n");
+       if (get_cpu_call_rcu_data(0)) {
+               fprintf(stderr, "Deallocating per-CPU call_rcu threads.\n");
+               free_all_cpu_call_rcu_data();
+       }
        exit(0);
 }
 
@@ -396,6 +470,12 @@ int main(int argc, char *argv[])
 
        smp_init();
        //rcu_init();
+       srandom(time(NULL));
+       if (random() & 0x100) {
+               fprintf(stderr, "Allocating per-CPU call_rcu threads.\n");
+               if (create_all_cpu_call_rcu_data(0))
+                       perror("create_all_cpu_call_rcu_data");
+       }
 
 #ifdef DEBUG_YIELD
        yield_active |= YIELD_READ;