108 lines
3.2 KiB
C++
108 lines
3.2 KiB
C++
// Copyright (c) 2011-2012 Ryan Prichard
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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#include "EventLoop.h"
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#include "NamedPipe.h"
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#include "AgentAssert.h"
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#include "../Shared/DebugClient.h"
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EventLoop::EventLoop() : m_exiting(false), m_pollInterval(0)
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{
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}
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EventLoop::~EventLoop()
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{
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for (size_t i = 0; i < m_pipes.size(); ++i)
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delete m_pipes[i];
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}
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// Enter the event loop. Runs until the I/O or timeout handler calls exit().
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void EventLoop::run()
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{
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std::vector<HANDLE> waitHandles;
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DWORD lastTime = GetTickCount();
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while (!m_exiting) {
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bool didSomething = false;
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// Attempt to make progress with the pipes.
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waitHandles.clear();
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for (size_t i = 0; i < m_pipes.size(); ++i) {
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if (m_pipes[i]->serviceIo(&waitHandles)) {
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onPipeIo(m_pipes[i]);
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didSomething = true;
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}
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}
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// Call the timeout if enough time has elapsed.
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if (m_pollInterval > 0) {
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int elapsed = GetTickCount() - lastTime;
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if (elapsed >= m_pollInterval) {
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onPollTimeout();
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lastTime = GetTickCount();
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didSomething = true;
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}
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}
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if (didSomething)
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continue;
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// If there's nothing to do, wait.
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DWORD timeout = INFINITE;
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if (m_pollInterval > 0)
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timeout = std::max(0, (int)(lastTime + m_pollInterval - GetTickCount()));
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if (waitHandles.size() == 0) {
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ASSERT(timeout != INFINITE);
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if (timeout > 0)
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Sleep(timeout);
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} else {
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DWORD result = WaitForMultipleObjects(waitHandles.size(),
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waitHandles.data(),
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FALSE,
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timeout);
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ASSERT(result != WAIT_FAILED);
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}
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}
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}
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NamedPipe *EventLoop::createNamedPipe()
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{
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NamedPipe *ret = new NamedPipe();
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m_pipes.push_back(ret);
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return ret;
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}
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void EventLoop::setPollInterval(int ms)
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{
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m_pollInterval = ms;
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}
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void EventLoop::shutdown()
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{
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m_exiting = true;
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}
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void EventLoop::onPollTimeout()
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{
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}
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void EventLoop::onPipeIo(NamedPipe *namedPipe)
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{
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}
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