--- /dev/null
+// Copyright (C) 2016 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 "anbox/graphics/buffer_queue.h"
+#include "anbox/common/message_channel.h"
+#include "anbox/logger.h"
+
+#include <gtest/gtest.h>
+
+#include <thread>
+
+namespace anbox {
+namespace graphics {
+TEST(BufferQueue, Constructor) {
+ BufferQueue queue(16);
+}
+
+TEST(BufferQueue, TryPushLocked) {
+ BufferQueue queue(2);
+
+ EXPECT_EQ(0, queue.try_push_locked(Buffer("Hello")));
+ EXPECT_EQ(0, queue.try_push_locked(Buffer("World")));
+
+ Buffer buff0("You Shall Not Move");
+ EXPECT_EQ(-EAGAIN, queue.try_push_locked(std::move(buff0)));
+ EXPECT_FALSE(buff0.empty()) << "Buffer should not be moved on failure!";
+}
+
+TEST(BufferQueue, TryPushLockedOnClosedQueue) {
+ BufferQueue queue(2);
+
+ EXPECT_EQ(0, queue.try_push_locked(Buffer("Hello")));
+
+ // Closing the queue prevents pushing new items to the queue.
+ queue.close_locked();
+
+ EXPECT_EQ(-EIO, queue.try_push_locked(Buffer("World")));
+}
+
+TEST(BufferQueue, TryPopLocked) {
+ BufferQueue queue(2);;
+
+ Buffer buffer;
+ EXPECT_EQ(-EAGAIN, queue.try_pop_locked(&buffer));
+
+ EXPECT_EQ(0, queue.try_push_locked(Buffer("Hello")));
+ EXPECT_EQ(0, queue.try_push_locked(Buffer("World")));
+
+ EXPECT_EQ(0, queue.try_pop_locked(&buffer));
+ EXPECT_STREQ("Hello", buffer.data());
+
+ EXPECT_EQ(0, queue.try_pop_locked(&buffer));
+ EXPECT_STREQ("World", buffer.data());
+
+ EXPECT_EQ(-EAGAIN, queue.try_pop_locked(&buffer));
+ EXPECT_STREQ("World", buffer.data());
+}
+
+TEST(BufferQueue, TryPopLockedOnClosedQueue) {
+ BufferQueue queue(2);
+
+ Buffer buffer;
+ EXPECT_EQ(-EAGAIN, queue.try_pop_locked(&buffer));
+
+ EXPECT_EQ(0, queue.try_push_locked(Buffer("Hello")));
+ EXPECT_EQ(0, queue.try_push_locked(Buffer("World")));
+
+ EXPECT_EQ(0, queue.try_pop_locked(&buffer));
+ EXPECT_STREQ("Hello", buffer.data());
+
+ // Closing the queue doesn't prevent popping existing items, but
+ // will generate -EIO once it is empty.
+ queue.close_locked();
+
+ EXPECT_EQ(0, queue.try_pop_locked(&buffer));
+ EXPECT_STREQ("World", buffer.data());
+
+ EXPECT_EQ(-EIO, queue.try_pop_locked(&buffer));
+ EXPECT_STREQ("World", buffer.data());
+}
+
+namespace {
+// A TestThread instance that holds a reference to a queue and can either
+// push or pull to it, on command from another thread. This uses a
+// MessageChannel to implement the communication channel between the
+// command thread and this one.
+class TestThread final {
+ public:
+ TestThread(std::mutex &lock, BufferQueue &queue) :
+ lock_(lock),
+ queue_(queue) {
+ }
+
+ bool start() {
+ thread_ = std::thread(&TestThread::thread_main, this);
+ return true;
+ }
+
+ // Tell the test thread to push |buffer| to the queue.
+ // Call endPush() later to get the command's result.
+ bool start_push(Buffer&& buffer) {
+ input_.send(Request{Cmd::Push, std::move(buffer)});
+ return true;
+ }
+
+ int end_push() {
+ Reply reply = {};
+ output_.receive(&reply);
+ return reply.result;
+ }
+
+ // Tell the test thread to pop a buffer from the queue.
+ // Call end_pop() to get the command's result, as well as the popped
+ // buffer if it is 0.
+ bool start_pop() {
+ input_.send(Request{Cmd::Pop, Buffer{}});
+ return true;
+ }
+
+ // Return the result of a previous start_pop() command. If result is
+ // 0, sets |*buffer| to the result buffer.
+ int end_pop(Buffer* buffer) {
+ Reply reply = {};
+ output_.receive(&reply);
+ if (reply.result == 0)
+ *buffer = std::move(reply.buffer);
+ return reply.result;
+ }
+
+ // Tell the test thread to close the queue from its side.
+ void do_close() {
+ input_.send(Request{Cmd::Close, Buffer{}});
+ }
+
+ // Tell the test thread to stop after completing its current command.
+ void stop() {
+ input_.send(Request{Cmd::Stop, Buffer{}});
+ thread_.join();
+ }
+
+ private:
+ enum class Cmd {
+ Push,
+ Pop,
+ Close,
+ Stop,
+ };
+
+ struct Request {
+ Cmd cmd;
+ Buffer buffer;
+ };
+
+ struct Reply {
+ int result;
+ Buffer buffer;
+ };
+
+ void thread_main() {
+ while (true) {
+ Request r;
+ input_.receive(&r);
+ if (r.cmd == Cmd::Stop)
+ break;
+ std::unique_lock<std::mutex> l(lock_);
+ Reply reply = {};
+ bool sendReply = false;
+ switch (r.cmd) {
+ case Cmd::Push:
+ reply.result = queue_.push_locked(std::move(r.buffer), l);
+ sendReply = true;
+ break;
+
+ case Cmd::Pop:
+ reply.result = queue_.pop_locked(&reply.buffer, l);
+ sendReply = true;
+ break;
+
+ case Cmd::Close:
+ queue_.close_locked();
+ break;
+
+ default:
+ ;
+ }
+ if (sendReply)
+ output_.send(std::move(reply));
+ }
+ }
+
+ std::thread thread_;
+ std::mutex &lock_;
+ BufferQueue &queue_;
+ anbox::common::MessageChannel<Request, 4> input_;
+ anbox::common::MessageChannel<Reply, 4> output_;
+};
+} // namespace
+
+TEST(BufferQueue, PushLocked) {
+ std::mutex lock;
+ BufferQueue queue(2);
+ TestThread thread(lock, queue);
+
+ ASSERT_TRUE(thread.start());
+ ASSERT_TRUE(thread.start_pop());
+
+ std::unique_lock<std::mutex> l(lock);
+ EXPECT_EQ(0, queue.push_locked(Buffer("Hello"), l));
+ EXPECT_EQ(0, queue.push_locked(Buffer("World"), l));
+ EXPECT_EQ(0, queue.push_locked(Buffer("Foo"), l));
+
+ thread.stop();
+}
+
+TEST(BufferQueue, PushLockedWithClosedQueue) {
+ std::mutex lock;
+ BufferQueue queue(2);
+ TestThread thread(lock, queue);
+
+ ASSERT_TRUE(thread.start());
+
+ {
+ std::unique_lock<std::mutex> l(lock);
+ EXPECT_EQ(0, queue.push_locked(Buffer("Hello"), l));
+ // Closing the queue prevents pushing new items, but not
+ // pulling from the queue.
+ queue.close_locked();
+ EXPECT_EQ(-EIO, queue.push_locked(Buffer("World"), l));
+ }
+
+ Buffer buffer;
+ ASSERT_TRUE(thread.start_pop());
+ EXPECT_EQ(0, thread.end_pop(&buffer));
+ EXPECT_STREQ("Hello", buffer.data());
+
+ thread.stop();
+}
+
+TEST(BufferQueue, PopLocked) {
+ std::mutex lock;
+ BufferQueue queue(2);
+ TestThread thread(lock, queue);
+
+ ASSERT_TRUE(thread.start());
+ ASSERT_TRUE(thread.start_push(Buffer("Hello World")));
+ EXPECT_EQ(0, thread.end_push());
+
+ {
+ std::unique_lock<std::mutex> l(lock);
+ Buffer buffer;
+ EXPECT_EQ(0, queue.pop_locked(&buffer, l));
+ EXPECT_STREQ("Hello World", buffer.data());
+ }
+
+ thread.stop();
+}
+
+TEST(BufferQueue, PopLockedWithClosedQueue) {
+ std::mutex lock;
+ BufferQueue queue(2);
+ TestThread thread(lock, queue);
+
+ ASSERT_TRUE(thread.start());
+ ASSERT_TRUE(thread.start_push(Buffer("Hello World")));
+ EXPECT_EQ(0, thread.end_push());
+
+ // Closing the queue shall not prevent pulling items from it.
+ // After that, -EIO shall be returned.
+ thread.do_close();
+
+ ASSERT_TRUE(thread.start_push(Buffer("Foo Bar")));
+ EXPECT_EQ(-EIO, thread.end_push());
+
+ {
+ std::unique_lock<std::mutex> l(lock);
+ Buffer buffer;
+ EXPECT_EQ(0, queue.pop_locked(&buffer, l));
+ EXPECT_STREQ("Hello World", buffer.data());
+
+ EXPECT_EQ(-EIO, queue.pop_locked(&buffer, l));
+ EXPECT_STREQ("Hello World", buffer.data());
+ }
+
+ thread.stop();
+}
+} // namespace graphics
+} // namespace anbox
Code Review / iec.git / blobdiff