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/*
* Copyright (c) 2016 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <config.h>
#undef NDEBUG
#include "fatal-signal.h"
#include "ovs-rcu.h"
#include "ovs-thread.h"
#include "ovstest.h"
#include "util.h"
static void *
quiescer_main(void *aux OVS_UNUSED)
{
/* A new thread must be not be quiescent */
ovs_assert(!ovsrcu_is_quiescent());
ovsrcu_quiesce_start();
/* After the above call it must be quiescent */
ovs_assert(ovsrcu_is_quiescent());
return NULL;
}
static void
test_rcu_quiesce(void)
{
pthread_t quiescer;
quiescer = ovs_thread_create("quiescer", quiescer_main, NULL);
/* This is the main thread of the process. After spawning its first
* thread it must not be quiescent. */
ovs_assert(!ovsrcu_is_quiescent());
xpthread_join(quiescer, NULL);
}
static void
add_count(void *_count)
{
unsigned *count = (unsigned *)_count;
(*count) ++;
}
static void
test_rcu_barrier(void)
{
unsigned count = 0;
for (int i = 0; i < 10; i ++) {
ovsrcu_postpone(add_count, &count);
}
ovsrcu_barrier();
ovs_assert(count == 10);
}
static void
test_rcu(int argc OVS_UNUSED, char *argv[] OVS_UNUSED) {
test_rcu_quiesce();
test_rcu_barrier();
}
OVSTEST_REGISTER("test-rcu", test_rcu);
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