X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=tests%2Ftest_urcu_hash.c;h=aac1db88cbc2a09425d87f3ef12adf6e54423161;hb=8bcbd94a60f624c1faae1481fcb0888aec25b481;hp=eb6cca9381b738279affedab98ceff818c1b2bba;hpb=bc8c3c74b84e838b195faa8871344f5b672ae1cd;p=userspace-rcu.git

diff --git a/tests/test_urcu_hash.c b/tests/test_urcu_hash.c
index eb6cca9..aac1db8 100644
--- a/tests/test_urcu_hash.c
+++ b/tests/test_urcu_hash.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 <sched.h>
 #include <errno.h>
+#include <signal.h>
 
 #ifdef __linux__
 #include <syscall.h>
@@ -41,6 +43,12 @@
 #define DEFAULT_MIN_ALLOC_SIZE	1
 #define DEFAULT_RAND_POOL	1000000
 
+/*
+ * Note: the hash seed should be a random value for hash tables
+ * targeting production environments to provide protection against
+ * denial of service attacks. We keep it a static value within this test
+ * program to compare identical benchmark runs.
+ */
 #define TEST_HASH_SEED	0x42UL
 
 /* Make this big enough to include the POWER5+ L3 cacheline size of 256B */
@@ -181,6 +189,12 @@ 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;
@@ -190,6 +204,7 @@ 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");
@@ -203,7 +218,12 @@ static void set_affinity(void)
 	}
 	CPU_ZERO(&mask);
 	CPU_SET(cpu, &mask);
-	sched_setaffinity(0, sizeof(mask), &mask);
+#if SCHED_SETAFFINITY_ARGS == 2
+	sched_setaffinity(0, &mask);
+#else
+        sched_setaffinity(0, sizeof(mask), &mask);
+#endif
+#endif /* HAVE_SCHED_SETAFFINITY */
 }
 
 static enum {
@@ -995,7 +1015,9 @@ int main(int argc, char **argv)
 	count_writer = malloc(sizeof(*count_writer) * nr_writers);
 
 	err = create_all_cpu_call_rcu_data(0);
-        assert(!err);
+	if (err) {
+		printf("Per-CPU call_rcu() worker threads unavailable. Using default global worker thread.\n");
+	}
 
 	if (memory_backend) {
 		test_ht = _cds_lfht_new(init_hash_size, min_hash_alloc_size,