viz_debugger_rwlock_unittest.cc | Explore in Territory

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "base/memory/raw_ptr.h"
#include "base/threading/platform_thread.h"
#include "components/viz/service/debugger/rwlock.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace {
// Shared global variables
int writer_count = …;
static const unsigned kNumCounts = …;

class RWLockTest : public testing::Test { … };

rwlock::RWLock RWLockTest::test_rwlock;

// The writer thread reads through the entire vector at a certain
// state left by the readers, sums up all the existing integer
// values, stores it, and resets the vector to provide a blank
// slate for the reader threads to continue working on.
class WriterThread : public base::PlatformThread::Delegate { … };

// Each reader thread has a corresponding slot within the shared
// vector. Within each slot, each reader thread increments the slot's
// integer value by 1 for k number (kNumCounts) of iterations.
// Within each iteration, there is a small time buffer/delay (kNumTimeDelay)
// to allow the writer thread to squeeze and take the lock.
class ReaderThread : public base::PlatformThread::Delegate { … };

TEST_F(RWLockTest, ReadWrite) { … }
}  // namespace
chromium/components/viz/service/debugger/viz_debugger_unittests/viz_debugger_rwlock_unittest.cc
