corda/psw/ae/common/inc/NonBlockingUnixCommunicationSocket.h
Angie Chinchilla 9441de4c38 Initial release of Intel SGX for Linux.
This release is used in conjunction with the linux-sgx-driver Intial release:
https://github.com/01org/linux-sgx-driver
commit-id: 0e865ce5e6b297a787bcdc12d98bada8174be6d7

Intel-id: 33399

Signed-off-by: Angie Chinchilla <angie.v.chinchilla@intel.com>
2016-06-23 18:51:53 -04:00

70 lines
2.8 KiB
C++

/*
* Copyright (C) 2011-2016 Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER 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.
*
*/
#ifndef __AE_NON_BLOCKING_COMM_SOCKET_H
#define __AE_NON_BLOCKING_COMM_SOCKET_H
#include <UnixCommunicationSocket.h>
#define MAX_EVENTS 12
class NonBlockingUnixCommunicationSocket : public UnixCommunicationSocket
{
public:
NonBlockingUnixCommunicationSocket(const char* socketbase) : UnixCommunicationSocket(socketbase), mEvents(NULL), mEpoll(-1) {}
NonBlockingUnixCommunicationSocket(int socket) : UnixCommunicationSocket(socket), mEvents(NULL), mEpoll(-1) {}
~NonBlockingUnixCommunicationSocket();
bool init();
char* readRaw(ssize_t length); //throw(SockDisconnectedException) = 0;
ssize_t writeRaw(const char* data, ssize_t length);
int getSockDescriptor();
bool wasTimeoutDetected();
bool setTimeout(uint32_t milliseconds);
void Cancel() const;
protected:
bool MakeNonBlocking();
ssize_t partialRead(char* buffer, ssize_t maxLength);
//members
struct epoll_event *mEvents; //epoll for events on two sources: 0->special command pipe. 1->the socket
int mEpoll;
int mCommandPipe[2];
private:
//non-copyable
NonBlockingUnixCommunicationSocket(const NonBlockingUnixCommunicationSocket&);
NonBlockingUnixCommunicationSocket& operator=(const NonBlockingUnixCommunicationSocket&);
};
#endif