/* * Copyright (C) 2013 Apple Inc. All rights reserved. * * 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. ``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 * 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 "Watchdog.h" namespace JSC { void Watchdog::initTimer() { m_queue = 0; m_timer = 0; } void Watchdog::destroyTimer() { ASSERT(!m_timer); if (m_queue) dispatch_release(m_queue); } void Watchdog::startTimer(std::chrono::microseconds limit) { ASSERT(!m_timer); if (!m_queue) m_queue = dispatch_queue_create("jsc.watchdog.queue", 0); m_timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, m_queue); dispatch_source_set_timer(m_timer, dispatch_time(DISPATCH_TIME_NOW, std::chrono::nanoseconds(limit).count()), DISPATCH_TIME_FOREVER, 0); dispatch_source_set_event_handler(m_timer, ^{ m_timerDidFire = true; }); dispatch_resume(m_timer); } void Watchdog::stopTimer() { ASSERT(m_queue); dispatch_sync(m_queue, ^{ dispatch_source_cancel(m_timer); }); dispatch_release(m_timer); m_timer = 0; } } // namespace JSC