blob: 2fe42a9f3a19e5b0b4a01b3c8dadf2766e297d41 [file] [log] [blame]
/*
* Copyright (C) 2017 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. 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 "RuntimeApplicationChecks.h"
#include <wtf/NeverDestroyed.h>
#include <wtf/Optional.h>
#include <wtf/ProcessID.h>
#include <wtf/RunLoop.h>
namespace WebCore {
#if !ASSERT_MSG_DISABLED
static bool presentingApplicationPIDOverrideWasQueried;
#endif
static std::optional<int>& presentingApplicationPIDOverride()
{
static NeverDestroyed<std::optional<int>> pid;
#if !ASSERT_MSG_DISABLED
presentingApplicationPIDOverrideWasQueried = true;
#endif
return pid;
}
int presentingApplicationPID()
{
const auto& pid = presentingApplicationPIDOverride();
ASSERT(!pid || RunLoop::isMain());
return pid ? pid.value() : getCurrentProcessID();
}
void setPresentingApplicationPID(int pid)
{
ASSERT(RunLoop::isMain());
ASSERT_WITH_MESSAGE(!presentingApplicationPIDOverrideWasQueried, "presentingApplicationPID() should not be called before setPresentingApplicationPID()");
presentingApplicationPIDOverride() = pid;
}
} // namespace WebCore