Add tests for pthread TLS leak.
Add tests that ensure that threads don't leak memory mappings after
they exit.
Bug: http://b/36045112
Test: /data/nativetest/bionic-unit-tests/bionic-unit-tests --gtest_filter=*leak*
Test: /data/nativetest64/bionic-unit-tests/bionic-unit-tests --gtest_filter=*leak*
Change-Id: Id0c1194b5d2bb7d89947b1ade16eb0d768d8c5b7
diff --git a/tests/leak_test.cpp b/tests/leak_test.cpp
new file mode 100644
index 0000000..9ddb2ff
--- /dev/null
+++ b/tests/leak_test.cpp
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2017 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 <err.h>
+#include <inttypes.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/user.h>
+#include <unistd.h>
+
+#include <gtest/gtest.h>
+
+#include <chrono>
+#include <thread>
+#include <vector>
+
+#include <android-base/macros.h>
+
+#include "utils.h"
+
+using namespace std::chrono_literals;
+
+static size_t GetMappingSize() {
+ std::vector<map_record> maps;
+ if (!Maps::parse_maps(&maps)) {
+ err(1, "failed to parse maps");
+ }
+
+ size_t result = 0;
+ for (const map_record& map : maps) {
+ result += map.addr_end - map.addr_start;
+ }
+
+ return result;
+}
+
+#define LEAK_TEST(test_case_name, test_name) \
+ static void __leak_test__##test_case_name##__##test_name(); \
+ TEST(test_case_name, test_name) { \
+ auto previous_size = GetMappingSize(); \
+ __leak_test__##test_case_name##__##test_name(); \
+ auto current_size = GetMappingSize(); \
+ if (current_size > previous_size) { \
+ FAIL() << "increase in process map size: " << previous_size << " -> " << current_size; \
+ } \
+ } \
+ static void __leak_test__##test_case_name##__##test_name()
+
+LEAK_TEST(leak, smoke) {
+ // Do nothing.
+}
+
+LEAK_TEST(leak, xfail) {
+ UNUSED(mmap(nullptr, PAGE_SIZE, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0));
+}
+
+// http://b/36045112
+LEAK_TEST(pthread_leak, join) {
+ for (int i = 0; i < 100; ++i) {
+ pthread_t thread;
+ ASSERT_EQ(0, pthread_create(&thread, nullptr, [](void*) -> void* { return nullptr; }, nullptr));
+ ASSERT_EQ(0, pthread_join(thread, nullptr));
+ }
+}
+
+// http://b/36045112
+LEAK_TEST(pthread_leak, detach) {
+ pthread_barrier_t barrier;
+ constexpr int thread_count = 100;
+ ASSERT_EQ(0, pthread_barrier_init(&barrier, nullptr, thread_count + 1));
+ for (int i = 0; i < thread_count; ++i) {
+ pthread_t thread;
+ const auto thread_function = +[](void* barrier) -> void* {
+ pthread_barrier_wait(static_cast<pthread_barrier_t*>(barrier));
+ return nullptr;
+ };
+ ASSERT_EQ(0, pthread_create(&thread, nullptr, thread_function, &barrier));
+ ASSERT_EQ(0, pthread_detach(thread));
+ }
+
+ pthread_barrier_wait(&barrier);
+
+ // Give the threads some time to exit.
+ std::this_thread::sleep_for(100ms);
+}