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* Copyright (C) 2012 Apple Inc. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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#import "ChildProcess.h"
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NSString * const ChildProcess::processSuppressionVisibleApplicationReason = @"Application is Visible";
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void ChildProcess::setApplicationIsOccluded(bool applicationIsOccluded)
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if (m_applicationIsOccluded == applicationIsOccluded)
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#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
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m_applicationIsOccluded = applicationIsOccluded;
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if (m_applicationIsOccluded)
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enableProcessSuppression(processSuppressionVisibleApplicationReason);
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disableProcessSuppression(processSuppressionVisibleApplicationReason);
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void ChildProcess::disableProcessSuppression(NSString *reason)
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#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
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// The following assumes that a process enabling AutomaticTerminationSupport also
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// takes a AutomaticTermination assertion for the lifetime of the process.
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[[NSProcessInfo processInfo] disableAutomaticTermination:reason];
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void ChildProcess::enableProcessSuppression(NSString *reason)
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#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
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// The following assumes that a process enabling AutomaticTerminationSupport also
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// takes a AutomaticTermination assertion for the lifetime of the process.
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[[NSProcessInfo processInfo] enableAutomaticTermination:reason];
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void ChildProcess::platformInitialize()
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#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
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setpriority(PRIO_DARWIN_PROCESS, 0, 0);
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disableProcessSuppression(processSuppressionVisibleApplicationReason);