112 lines
2.7 KiB
C++
112 lines
2.7 KiB
C++
/*
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* Copyright 2003-2017 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_EVENT_POLLGROUP_WINSELECT_HXX
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#define MPD_EVENT_POLLGROUP_WINSELECT_HXX
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#include "check.h"
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#include "PollResultGeneric.hxx"
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#include <assert.h>
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#include <string.h>
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#include <unordered_map>
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#include <windows.h>
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#include <winsock2.h>
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#ifdef ERROR
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#undef ERROR
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#endif
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class SocketSet
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{
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fd_set set;
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public:
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SocketSet() { set.fd_count = 0; }
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SocketSet(SocketSet &other) {
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set.fd_count = other.set.fd_count;
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memcpy(set.fd_array,
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other.set.fd_array,
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sizeof (SOCKET) * set.fd_count);
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}
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fd_set *GetPtr() { return &set; }
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int Size() { return set.fd_count; }
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bool IsEmpty() { return set.fd_count == 0; }
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bool IsFull() { return set.fd_count == FD_SETSIZE; }
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int operator[](int index) {
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assert(index >= 0 && (u_int)index < set.fd_count);
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return set.fd_array[index];
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}
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int Add(int fd) {
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assert(!IsFull());
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set.fd_array[set.fd_count] = fd;
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return set.fd_count++;
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}
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void MoveToEnd(int index) {
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assert(index >= 0 && (u_int)index < set.fd_count);
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std::swap(set.fd_array[index], set.fd_array[set.fd_count - 1]);
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}
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void RemoveLast() {
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assert(!IsEmpty());
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--set.fd_count;
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}
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};
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class PollGroupWinSelect
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{
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struct Item
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{
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int index[2];
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void *obj;
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unsigned events;
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};
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SocketSet event_set[2];
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std::unordered_map<int, Item> items;
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bool CanModify(Item &item, unsigned events, int event_id);
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void Modify(Item &item, int fd, unsigned events, int event_id);
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PollGroupWinSelect(PollGroupWinSelect &) = delete;
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PollGroupWinSelect &operator=(PollGroupWinSelect &) = delete;
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public:
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static constexpr unsigned READ = 1;
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static constexpr unsigned WRITE = 2;
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static constexpr unsigned ERROR = 0;
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static constexpr unsigned HANGUP = 0;
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PollGroupWinSelect();
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~PollGroupWinSelect();
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void ReadEvents(PollResultGeneric &result, int timeout_ms);
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bool Add(int fd, unsigned events, void *obj);
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bool Modify(int fd, unsigned events, void *obj);
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bool Remove(int fd);
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bool Abandon(int fd) { return Remove(fd); }
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};
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#endif
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