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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2015 XSky <haomai@xsky.com>
*
* Author: Haomai Wang <haomaiwang@gmail.com>
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#ifndef CEPH_COMMON_EVENT_SOCKET_H
#define CEPH_COMMON_EVENT_SOCKET_H
#include <unistd.h>
#if defined(__FreeBSD__) || defined(__APPLE__)
#include <errno.h>
#endif
#include "include/event_type.h"
class EventSocket {
int socket;
int type;
public:
EventSocket(): socket(-1), type(EVENT_SOCKET_TYPE_NONE) {}
bool is_valid() const { return socket != -1; }
int init(int fd, int t) {
switch (t) {
case EVENT_SOCKET_TYPE_PIPE:
#ifdef HAVE_EVENTFD
case EVENT_SOCKET_TYPE_EVENTFD:
#endif
{
socket = fd;
type = t;
return 0;
}
}
return -EINVAL;
}
int notify() {
int ret;
switch (type) {
case EVENT_SOCKET_TYPE_PIPE:
{
char buf[1];
buf[0] = 'i';
ret = write(socket, buf, 1);
if (ret < 0)
ret = -errno;
else
ret = 0;
break;
}
#ifdef HAVE_EVENTFD
case EVENT_SOCKET_TYPE_EVENTFD:
{
uint64_t value = 1;
ret = write(socket, &value, sizeof (value));
if (ret < 0)
ret = -errno;
else
ret = 0;
break;
}
#endif
default:
{
ret = -1;
break;
}
}
return ret;
}
};
#endif
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