NonBlockingUnixCommunicationSocket.h 2.8 KB

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  1. /*
  2. * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
  3. *
  4. * Redistribution and use in source and binary forms, with or without
  5. * modification, are permitted provided that the following conditions
  6. * are met:
  7. *
  8. * * Redistributions of source code must retain the above copyright
  9. * notice, this list of conditions and the following disclaimer.
  10. * * Redistributions in binary form must reproduce the above copyright
  11. * notice, this list of conditions and the following disclaimer in
  12. * the documentation and/or other materials provided with the
  13. * distribution.
  14. * * Neither the name of Intel Corporation nor the names of its
  15. * contributors may be used to endorse or promote products derived
  16. * from this software without specific prior written permission.
  17. *
  18. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21. * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22. * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24. * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29. *
  30. */
  31. #ifndef __AE_NON_BLOCKING_COMM_SOCKET_H
  32. #define __AE_NON_BLOCKING_COMM_SOCKET_H
  33. #include <UnixCommunicationSocket.h>
  34. #define MAX_EVENTS 12
  35. class NonBlockingUnixCommunicationSocket : public UnixCommunicationSocket
  36. {
  37. public:
  38. NonBlockingUnixCommunicationSocket(const char* socketbase) : UnixCommunicationSocket(socketbase), mEvents(NULL), mEpoll(-1) {}
  39. NonBlockingUnixCommunicationSocket(int socket) : UnixCommunicationSocket(socket), mEvents(NULL), mEpoll(-1) {}
  40. ~NonBlockingUnixCommunicationSocket();
  41. bool init();
  42. char* readRaw(ssize_t length);
  43. ssize_t writeRaw(const char* data, ssize_t length);
  44. int getSockDescriptor();
  45. bool wasTimeoutDetected();
  46. bool setTimeout(uint32_t milliseconds);
  47. void Cancel() const;
  48. protected:
  49. bool MakeNonBlocking();
  50. ssize_t partialRead(char* buffer, ssize_t maxLength);
  51. //members
  52. struct epoll_event *mEvents; //epoll for events on two sources: 0->special command pipe. 1->the socket
  53. int mEpoll;
  54. int mCommandPipe[2];
  55. private:
  56. //non-copyable
  57. NonBlockingUnixCommunicationSocket(const NonBlockingUnixCommunicationSocket&);
  58. NonBlockingUnixCommunicationSocket& operator=(const NonBlockingUnixCommunicationSocket&);
  59. };
  60. #endif