MPD  0.20.6
PollGroupPoll.hxx
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1 /*
2  * Copyright 2003-2017 The Music Player Daemon Project
3  * http://www.musicpd.org
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
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9  *
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13  * GNU General Public License for more details.
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18  */
19 
20 #ifndef MPD_EVENT_POLLGROUP_POLL_HXX
21 #define MPD_EVENT_POLLGROUP_POLL_HXX
22 
23 #include "check.h"
24 #include "PollResultGeneric.hxx"
25 
26 #include <vector>
27 #include <unordered_map>
28 
29 #include <stddef.h>
30 #include <sys/poll.h>
31 
33 {
34  struct Item
35  {
36  size_t index;
37  void *obj;
38  };
39 
40  std::vector<pollfd> poll_events;
41  std::unordered_map<int, Item> items;
42 
43  PollGroupPoll(PollGroupPoll &) = delete;
44  PollGroupPoll &operator=(PollGroupPoll &) = delete;
45 public:
46  static constexpr unsigned READ = POLLIN;
47  static constexpr unsigned WRITE = POLLOUT;
48  static constexpr unsigned ERROR = POLLERR;
49  static constexpr unsigned HANGUP = POLLHUP;
50 
51  PollGroupPoll();
53 
54  void ReadEvents(PollResultGeneric &result, int timeout_ms);
55  bool Add(int fd, unsigned events, void *obj);
56  bool Modify(int fd, unsigned events, void *obj);
57  bool Remove(int fd);
58  bool Abandon(int fd) {
59  return Remove(fd);
60  }
61 };
62 
63 #endif
bool Modify(int fd, unsigned events, void *obj)
bool Abandon(int fd)
bool Remove(int fd)
static constexpr unsigned READ
void ReadEvents(PollResultGeneric &result, int timeout_ms)
static constexpr unsigned WRITE
static constexpr unsigned ERROR
static constexpr unsigned HANGUP
bool Add(int fd, unsigned events, void *obj)