urcu tests: add writer duration parameter

[urcu.git] / tests / test_urcu_bp.c

diff --git a/tests/test_urcu_bp.c b/tests/test_urcu_bp.c
index 89873324a3580badfdecfe5a1981ef799e13bca0..d5653b05882e75a59cbfcf3e17a086afed802dda 100644 (file)
--- a/tests/test_urcu_bp.c
+++ b/tests/test_urcu_bp.c
@@ -21,6 +21,7 @@
  */
 
 #define _GNU_SOURCE
+#include "../config.h"
 #include <stdio.h>
 #include <pthread.h>
 #include <stdlib.h>
@@ -32,6 +33,7 @@
 #include <assert.h>
 #include <sys/syscall.h>
 #include <sched.h>
+#include <errno.h>
 
 #include <urcu/arch.h>
 
@@ -75,6 +77,9 @@ static unsigned long duration;
 /* read-side C.S. duration, in loops */
 static unsigned long rduration;
 
+/* write-side C.S. duration, in loops */
+static unsigned long wduration;
+
 static inline void loop_sleep(unsigned long l)
 {
        while(l-- != 0)
@@ -95,6 +100,12 @@ static int use_affinity = 0;
 
 pthread_mutex_t affinity_mutex = PTHREAD_MUTEX_INITIALIZER;
 
+#ifndef HAVE_CPU_SET_T
+typedef unsigned long cpu_set_t;
+# define CPU_ZERO(cpuset) do { *(cpuset) = 0; } while(0)
+# define CPU_SET(cpu, cpuset) do { *(cpuset) |= (1UL << (cpu)); } while(0)
+#endif
+
 static void set_affinity(void)
 {
        cpu_set_t mask;
@@ -104,6 +115,7 @@ static void set_affinity(void)
        if (!use_affinity)
                return;
 
+#if HAVE_SCHED_SETAFFINITY
        ret = pthread_mutex_lock(&affinity_mutex);
        if (ret) {
                perror("Error in pthread mutex lock");
@@ -115,9 +127,15 @@ static void set_affinity(void)
                perror("Error in pthread mutex unlock");
                exit(-1);
        }
+
        CPU_ZERO(&mask);
        CPU_SET(cpu, &mask);
+#if SCHED_SETAFFINITY_ARGS == 2
+       sched_setaffinity(0, &mask);
+#else
        sched_setaffinity(0, sizeof(mask), &mask);
+#endif
+#endif /* HAVE_SCHED_SETAFFINITY */
 }
 
 /*
@@ -256,7 +274,10 @@ void *thr_writer(void *_count)
        for (;;) {
                new = test_array_alloc();
                new->a = 8;
-               old = rcu_publish_content(&test_rcu_pointer, new);
+               old = rcu_xchg_pointer(&test_rcu_pointer, new);
+               if (unlikely(wduration))
+                       loop_sleep(wduration);
+               synchronize_rcu();
                if (old)
                        old->a = 0;
                test_array_free(old);
@@ -281,6 +302,7 @@ void show_usage(int argc, char **argv)
 #endif
        printf(" [-d delay] (writer period (us))");
        printf(" [-c duration] (reader C.S. duration (in loops))");
+       printf(" [-e duration] (writer C.S. duration (in loops))");
        printf(" [-v] (verbose output)");
        printf(" [-a cpu#] [-a cpu#]... (affinity)");
        printf("\n");
@@ -354,6 +376,13 @@ int main(int argc, char **argv)
                        }
                        wdelay = atol(argv[++i]);
                        break;
+               case 'e':
+                       if (argc < i + 2) {
+                               show_usage(argc, argv);
+                               return -1;
+                       }
+                       wduration = atol(argv[++i]);
+                       break;
                case 'v':
                        verbose_mode = 1;
                        break;