ce49d99c2f
Since we switched from autotools to Meson in commit
94592c1406, we don't need to include
`config.h` early to properly enable large file support. Meson passes
the required macros on the compiler command line instead of defining
them in `config.h`.
This means we can include `config.h` at any time, whenever we want to
check its macros, and there are no ordering constraints.
130 lines
3.0 KiB
C++
130 lines
3.0 KiB
C++
/*
|
|
* Copyright 2003-2018 The Music Player Daemon Project
|
|
* http://www.musicpd.org
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#ifndef MPD_EVENT_POLLGROUP_WINSELECT_HXX
|
|
#define MPD_EVENT_POLLGROUP_WINSELECT_HXX
|
|
|
|
#include "PollResultGeneric.hxx"
|
|
|
|
#include <assert.h>
|
|
#include <string.h>
|
|
|
|
#include <unordered_map>
|
|
|
|
#include <windows.h>
|
|
#include <winsock2.h>
|
|
|
|
/* ERROR is a WIN32 macro that poisons our namespace; this is a kludge
|
|
to allow us to use it anyway */
|
|
#ifdef ERROR
|
|
#undef ERROR
|
|
#endif
|
|
|
|
class SocketSet
|
|
{
|
|
fd_set set;
|
|
public:
|
|
SocketSet() noexcept {
|
|
set.fd_count = 0;
|
|
}
|
|
|
|
SocketSet(const SocketSet &other) noexcept {
|
|
set.fd_count = other.set.fd_count;
|
|
memcpy(set.fd_array,
|
|
other.set.fd_array,
|
|
sizeof (SOCKET) * set.fd_count);
|
|
}
|
|
|
|
fd_set *GetPtr() noexcept {
|
|
return &set;
|
|
}
|
|
|
|
size_t Size() const noexcept {
|
|
return set.fd_count;
|
|
}
|
|
|
|
bool IsEmpty() const noexcept {
|
|
return set.fd_count == 0;
|
|
}
|
|
|
|
bool IsFull() const noexcept {
|
|
return set.fd_count == FD_SETSIZE;
|
|
}
|
|
|
|
int operator[](size_t index) const noexcept {
|
|
assert(index < set.fd_count);
|
|
return set.fd_array[index];
|
|
}
|
|
|
|
size_t Add(int fd) noexcept {
|
|
assert(!IsFull());
|
|
set.fd_array[set.fd_count] = fd;
|
|
return set.fd_count++;
|
|
}
|
|
|
|
void MoveToEnd(size_t index) noexcept {
|
|
assert(index < set.fd_count);
|
|
std::swap(set.fd_array[index], set.fd_array[set.fd_count - 1]);
|
|
}
|
|
|
|
void RemoveLast() noexcept {
|
|
assert(!IsEmpty());
|
|
--set.fd_count;
|
|
}
|
|
};
|
|
|
|
class PollGroupWinSelect
|
|
{
|
|
struct Item
|
|
{
|
|
int index[2];
|
|
void *obj;
|
|
unsigned events;
|
|
};
|
|
|
|
SocketSet event_set[2];
|
|
std::unordered_map<int, Item> items;
|
|
|
|
bool CanModify(Item &item, unsigned events,
|
|
int event_id) const noexcept;
|
|
void Modify(Item &item, int fd, unsigned events,
|
|
int event_id) noexcept;
|
|
|
|
PollGroupWinSelect(PollGroupWinSelect &) = delete;
|
|
PollGroupWinSelect &operator=(PollGroupWinSelect &) = delete;
|
|
public:
|
|
static constexpr unsigned READ = 1;
|
|
static constexpr unsigned WRITE = 2;
|
|
static constexpr unsigned ERROR = 0;
|
|
static constexpr unsigned HANGUP = 0;
|
|
|
|
PollGroupWinSelect() noexcept;
|
|
~PollGroupWinSelect() noexcept;
|
|
|
|
void ReadEvents(PollResultGeneric &result, int timeout_ms) noexcept;
|
|
bool Add(int fd, unsigned events, void *obj) noexcept;
|
|
bool Modify(int fd, unsigned events, void *obj) noexcept;
|
|
bool Remove(int fd) noexcept;
|
|
bool Abandon(int fd) noexcept {
|
|
return Remove(fd);
|
|
}
|
|
};
|
|
|
|
#endif
|