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/*
* Copyright (C) 2014 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 "MachSendRight.h"
#include <mach/mach_error.h>
#include <mach/mach_init.h>
#include <utility>
namespace WebCore {
static void retainSendRight(mach_port_t port)
{
if (!MACH_PORT_VALID(port))
return;
auto kr = mach_port_mod_refs(mach_task_self(), port, MACH_PORT_RIGHT_SEND, 1);
if (kr != KERN_SUCCESS)
LOG_ERROR("mach_port_mod_refs error: %s (%x)", mach_error_string(kr), kr);
}
static void releaseSendRight(mach_port_t port)
{
if (!MACH_PORT_VALID(port))
return;
auto kr = mach_port_deallocate(mach_task_self(), port);
if (kr != KERN_SUCCESS)
LOG_ERROR("mach_port_deallocate error: %s (%x)", mach_error_string(kr), kr);
}
MachSendRight MachSendRight::adopt(mach_port_t port)
{
return MachSendRight(port);
}
MachSendRight MachSendRight::create(mach_port_t port)
{
retainSendRight(port);
return adopt(port);
}
MachSendRight::MachSendRight(mach_port_t port)
: m_port(port)
{
}
MachSendRight::MachSendRight(MachSendRight&& other)
: m_port(other.leakSendRight())
{
}
MachSendRight::~MachSendRight()
{
releaseSendRight(m_port);
}
MachSendRight& MachSendRight::operator=(MachSendRight&& other)
{
if (this != &other) {
releaseSendRight(m_port);
m_port = other.leakSendRight();
}
return *this;
}
MachSendRight MachSendRight::copySendRight() const
{
return create(m_port);
}
mach_port_t MachSendRight::leakSendRight()
{
return std::exchange(m_port, MACH_PORT_NULL);
}
}
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