| /* |
| * Copyright (C) 2020 Sony Interactive Entertainment Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "CurlStreamScheduler.h" |
| |
| #if USE(CURL) |
| |
| namespace WebCore { |
| |
| CurlStreamScheduler::CurlStreamScheduler() |
| { |
| ASSERT(isMainThread()); |
| } |
| |
| CurlStreamScheduler::~CurlStreamScheduler() |
| { |
| ASSERT(isMainThread()); |
| } |
| |
| CurlStreamID CurlStreamScheduler::createStream(const URL& url, CurlStream::Client& client) |
| { |
| ASSERT(isMainThread()); |
| |
| do { |
| m_currentStreamID = (m_currentStreamID + 1 != invalidCurlStreamID) ? m_currentStreamID + 1 : 1; |
| } while (m_clientList.contains(m_currentStreamID)); |
| |
| auto streamID = m_currentStreamID; |
| m_clientList.add(streamID, &client); |
| |
| callOnWorkerThread([this, streamID, url = url.isolatedCopy()]() mutable { |
| m_streamList.add(streamID, CurlStream::create(*this, streamID, WTFMove(url))); |
| }); |
| |
| return streamID; |
| } |
| |
| void CurlStreamScheduler::destroyStream(CurlStreamID streamID) |
| { |
| ASSERT(isMainThread()); |
| |
| if (m_clientList.contains(streamID)) |
| m_clientList.remove(streamID); |
| |
| callOnWorkerThread([this, streamID]() { |
| if (m_streamList.contains(streamID)) |
| m_streamList.remove(streamID); |
| }); |
| } |
| |
| void CurlStreamScheduler::send(CurlStreamID streamID, UniqueArray<uint8_t>&& data, size_t length) |
| { |
| ASSERT(isMainThread()); |
| |
| callOnWorkerThread([this, streamID, data = WTFMove(data), length]() mutable { |
| if (auto stream = m_streamList.get(streamID)) |
| stream->send(WTFMove(data), length); |
| }); |
| } |
| |
| void CurlStreamScheduler::callOnWorkerThread(WTF::Function<void()>&& task) |
| { |
| ASSERT(isMainThread()); |
| |
| { |
| Locker locker { m_mutex }; |
| m_taskQueue.append(WTFMove(task)); |
| } |
| |
| startThreadIfNeeded(); |
| } |
| |
| void CurlStreamScheduler::callClientOnMainThread(CurlStreamID streamID, WTF::Function<void(CurlStream::Client&)>&& task) |
| { |
| ASSERT(!isMainThread()); |
| |
| callOnMainThread([this, streamID, task = WTFMove(task)]() { |
| if (auto client = m_clientList.get(streamID)) |
| task(*client); |
| }); |
| } |
| |
| void CurlStreamScheduler::startThreadIfNeeded() |
| { |
| { |
| Locker locker { m_mutex }; |
| if (m_runThread) |
| return; |
| } |
| |
| if (m_thread) |
| m_thread->waitForCompletion(); |
| |
| m_runThread = true; |
| |
| m_thread = Thread::create("curlStreamThread", [this] { |
| workerThread(); |
| }, ThreadType::Network); |
| } |
| |
| void CurlStreamScheduler::stopThreadIfNoMoreJobRunning() |
| { |
| ASSERT(!isMainThread()); |
| |
| if (m_streamList.size()) |
| return; |
| |
| Locker locker { m_mutex }; |
| if (m_taskQueue.size()) |
| return; |
| |
| m_runThread = false; |
| } |
| |
| void CurlStreamScheduler::executeTasks() |
| { |
| ASSERT(!isMainThread()); |
| |
| Vector<WTF::Function<void()>> taskQueue; |
| |
| { |
| Locker locker { m_mutex }; |
| taskQueue = WTFMove(m_taskQueue); |
| } |
| |
| for (auto& task : taskQueue) |
| task(); |
| } |
| |
| void CurlStreamScheduler::workerThread() |
| { |
| ASSERT(!isMainThread()); |
| static const int selectTimeoutMS = 20; |
| struct timeval timeout { 0, selectTimeoutMS * 1000}; |
| |
| while (m_runThread) { |
| executeTasks(); |
| |
| int rc = 0; |
| fd_set readfds; |
| fd_set writefds; |
| fd_set exceptfds; |
| |
| do { |
| int maxfd = -1; |
| |
| FD_ZERO(&readfds); |
| FD_ZERO(&writefds); |
| FD_ZERO(&exceptfds); |
| |
| for (auto& stream : m_streamList.values()) |
| stream->appendMonitoringFd(readfds, writefds, exceptfds, maxfd); |
| |
| if (maxfd >= 0) |
| rc = ::select(maxfd + 1, &readfds, &writefds, &exceptfds, &timeout); |
| } while (rc == -1 && errno == EINTR); |
| |
| for (auto& stream : m_streamList.values()) |
| stream->tryToTransfer(readfds, writefds, exceptfds); |
| |
| stopThreadIfNoMoreJobRunning(); |
| } |
| } |
| |
| } |
| |
| #endif |