Move thread_util to libnetdutils
This change comprises:
[1] Move thread_util.h to libnetdutils to ease the cleanup of the
include path system/netd/server for libnetd_resolv.
[2] Rename thread_util.h to ThreadUtil.h.
[3] Add the test to ThreadUtilTest.
Bug: 128662167
Test: system/netd/tests/runtests.sh passed
Change-Id: Ia8e9b196fbe41a4bd1edc7592badaacf57165988
diff --git a/libnetdutils/ThreadUtilTest.cpp b/libnetdutils/ThreadUtilTest.cpp
new file mode 100644
index 0000000..2fe63b7
--- /dev/null
+++ b/libnetdutils/ThreadUtilTest.cpp
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * 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 <gtest/gtest.h>
+
+#include "netdutils/ThreadUtil.h"
+
+namespace android {
+namespace netdutils {
+
+namespace {
+
+class NoopRun {
+ public:
+ NoopRun() { instanceNum++; }
+ ~NoopRun() { instanceNum--; }
+
+ void run() {}
+
+ static bool waitForAllReleased(int timeoutMs) {
+ constexpr int intervalMs = 20;
+ int limit = timeoutMs / intervalMs;
+ for (int i = 1; i < limit; i++) {
+ if (instanceNum == 0) {
+ return true;
+ }
+ usleep(intervalMs * 1000);
+ }
+ return false;
+ }
+
+ // To track how many instances are alive.
+ static std::atomic<int> instanceNum;
+};
+
+std::atomic<int> NoopRun::instanceNum;
+
+} // namespace
+
+TEST(ThreadUtilTest, objectReleased) {
+ NoopRun::instanceNum = 0;
+ NoopRun* obj = new NoopRun();
+ EXPECT_EQ(1, NoopRun::instanceNum);
+ threadLaunch(obj);
+
+ // Wait for the object released along with the thread exited.
+ EXPECT_TRUE(NoopRun::waitForAllReleased(1000));
+ EXPECT_EQ(0, NoopRun::instanceNum);
+}
+
+} // namespace netdutils
+} // namespace android