+/*
+ * Copyright 2017-present Facebook, 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 <folly/detail/AtFork.h>
+
+#include <folly/portability/GTest.h>
+#include <glog/logging.h>
+
+TEST(ThreadLocal, AtFork) {
+ int foo;
+ bool forked = false;
+ folly::detail::AtFork::registerHandler(
+ &foo, [&] { forked = true; }, [] {}, [] {});
+ auto pid = fork();
+ if (pid) {
+ int status;
+ auto pid2 = wait(&status);
+ EXPECT_EQ(status, 0);
+ EXPECT_EQ(pid, pid2);
+ } else {
+ exit(0);
+ }
+ EXPECT_TRUE(forked);
+ forked = false;
+ folly::detail::AtFork::unregisterHandler(&foo);
+ pid = fork();
+ if (pid) {
+ int status;
+ auto pid2 = wait(&status);
+ EXPECT_EQ(status, 0);
+ EXPECT_EQ(pid, pid2);
+ } else {
+ exit(0);
+ }
+ EXPECT_FALSE(forked);
+}