8b727aa7ab
- 5d8235b05f4ea2b33a138712f463a30b6ae75719 Incorporate PR https://github.com/abseil/abseil-cpp/pull/... by Xiaoyi Zhang <zhangxy@google.com> - f2bc653acdaa983aa2765693476c17cd1142d59b Run the StrSplit WorksWithLargeStrings test in all configs. by Matt Armstrong <marmstrong@google.com> - 43aed1ea7dffcd656e1916c2d5637650fc3a8de3 Incorporate PR https://github.com/abseil/abseil-cpp/pull/... by Xiaoyi Zhang <zhangxy@google.com> - d58511d60904c7090e44638339ba63b97ca96f1a Add a new simple Mutex lifetime test, to be extended later. by Greg Falcon <gfalcon@google.com> - db5c86c186c09ad57963bcbd2b6182f62bce8ed0 Actually use the exception in TestCheckerAtCountdown by Jon Cohen <cohenjon@google.com> - 29c01a72b62d9a4b90f9bd935e3575adbafd85ed Use factories instead of explicitly passing pointers to T... by Jon Cohen <cohenjon@google.com> - 54d5526ee6ab7784992845f6e6e2c7d48ba008a5 Fix uint128 ostream operator and improve ostream test. by Alex Strelnikov <strel@google.com> - 4e49abe7e569cf6bd0eae95ce2b2fe2faa051fa2 Fix documentation: strings::PairFormatter -> absl::PairFo... by Derek Mauro <dmauro@google.com> - 4044297f0e1a8a6c6ae3f781a65080e0d57c6751 Cut the memory used by the StrSplit WorksWithLargeStrings... by Jorg Brown <jorg@google.com> GitOrigin-RevId: 5d8235b05f4ea2b33a138712f463a30b6ae75719 Change-Id: Ib6b6b0161c26e5326b53a126454754e33678eefc
95 lines
3.2 KiB
C++
95 lines
3.2 KiB
C++
// Copyright 2017 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <cstdlib>
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#include <thread> // NOLINT(build/c++11), Abseil test
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#include <type_traits>
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#include "absl/base/attributes.h"
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#include "absl/base/internal/raw_logging.h"
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#include "absl/synchronization/mutex.h"
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#include "absl/synchronization/notification.h"
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namespace {
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// A two-threaded test which checks that Mutex, CondVar, and Notification have
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// correct basic functionality. The intent is to establish that they
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// function correctly in various phases of construction and destruction.
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//
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// Thread one acquires a lock on 'mutex', wakes thread two via 'notification',
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// then waits for 'state' to be set, as signalled by 'condvar'.
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//
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// Thread two waits on 'notification', then sets 'state' inside the 'mutex',
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// signalling the change via 'condvar'.
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//
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// These tests use ABSL_RAW_CHECK to validate invariants, rather than EXPECT or
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// ASSERT from gUnit, because we need to invoke them during global destructors,
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// when gUnit teardown would have already begun.
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void ThreadOne(absl::Mutex* mutex, absl::CondVar* condvar,
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absl::Notification* notification, bool* state) {
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// Test that the notification is in a valid initial state.
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ABSL_RAW_CHECK(!notification->HasBeenNotified(), "invalid Notification");
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ABSL_RAW_CHECK(*state == false, "*state not initialized");
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{
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absl::MutexLock lock(mutex);
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notification->Notify();
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ABSL_RAW_CHECK(notification->HasBeenNotified(), "invalid Notification");
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while (*state == false) {
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condvar->Wait(mutex);
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}
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}
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}
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void ThreadTwo(absl::Mutex* mutex, absl::CondVar* condvar,
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absl::Notification* notification, bool* state) {
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ABSL_RAW_CHECK(*state == false, "*state not initialized");
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// Wake thread one
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notification->WaitForNotification();
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ABSL_RAW_CHECK(notification->HasBeenNotified(), "invalid Notification");
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{
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absl::MutexLock lock(mutex);
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*state = true;
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condvar->Signal();
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}
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}
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// Launch thread 1 and thread 2, and block on their completion.
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void RunTests(absl::Mutex* mutex, absl::CondVar* condvar,
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absl::Notification* notification) {
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bool state = false;
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std::thread thread_one(ThreadOne, mutex, condvar, notification, &state);
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std::thread thread_two(ThreadTwo, mutex, condvar, notification, &state);
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thread_one.join();
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thread_two.join();
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}
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void TestLocals() {
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absl::Mutex mutex;
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absl::CondVar condvar;
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absl::Notification notification;
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RunTests(&mutex, &condvar, ¬ification);
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}
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} // namespace
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int main() {
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TestLocals();
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// Explicitly call exit(0) here, to make it clear that we intend for the
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// above global object destructors to run.
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std::exit(0);
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}
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