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/*
* Copyright (C) 2010 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.
*/
#ifndef Attachment_h
#define Attachment_h
#if OS(DARWIN)
#include <mach/mach_init.h>
#include <mach/mach_traps.h>
#endif
namespace CoreIPC {
class ArgumentDecoder;
class ArgumentEncoder;
class Attachment {
public:
Attachment();
enum Type {
Uninitialized,
#if OS(DARWIN)
MachPortType,
MachOOLMemoryType,
#elif USE(UNIX_DOMAIN_SOCKETS)
SocketType,
MappedMemoryType
#endif
};
#if OS(DARWIN)
Attachment(mach_port_name_t port, mach_msg_type_name_t disposition);
Attachment(void* address, mach_msg_size_t size, mach_msg_copy_options_t copyOptions, bool deallocate);
#elif USE(UNIX_DOMAIN_SOCKETS)
Attachment(int fileDescriptor, size_t);
Attachment(int fileDescriptor);
#endif
Type type() const { return m_type; }
#if OS(DARWIN)
void release();
// MachPortType
mach_port_name_t port() const { ASSERT(m_type == MachPortType); return m_port.port; }
mach_msg_type_name_t disposition() const { ASSERT(m_type == MachPortType); return m_port.disposition; }
// MachOOLMemoryType
void* address() const { ASSERT(m_type == MachOOLMemoryType); return m_oolMemory.address; }
mach_msg_size_t size() const { ASSERT(m_type == MachOOLMemoryType); return m_oolMemory.size; }
mach_msg_copy_options_t copyOptions() const { ASSERT(m_type == MachOOLMemoryType); return m_oolMemory.copyOptions; }
bool deallocate() const { ASSERT(m_type == MachOOLMemoryType); return m_oolMemory.deallocate; }
#elif USE(UNIX_DOMAIN_SOCKETS)
size_t size() const { return m_size; }
int releaseFileDescriptor() { int temp = m_fileDescriptor; m_fileDescriptor = -1; return temp; }
int fileDescriptor() const { return m_fileDescriptor; }
void dispose();
#endif
void encode(ArgumentEncoder&) const;
static bool decode(ArgumentDecoder&, Attachment&);
private:
Type m_type;
#if OS(DARWIN)
union {
struct {
mach_port_name_t port;
mach_msg_type_name_t disposition;
} m_port;
struct {
void* address;
mach_msg_size_t size;
mach_msg_copy_options_t copyOptions;
bool deallocate;
} m_oolMemory;
};
#elif USE(UNIX_DOMAIN_SOCKETS)
int m_fileDescriptor;
size_t m_size;
#endif
};
} // namespace CoreIPC
#endif // Attachment_h
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