91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
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/*
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* QEMU I/O channels watch helper APIs
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*
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* Copyright (c) 2015 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef QIO_CHANNEL_WATCH_H
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#define QIO_CHANNEL_WATCH_H
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#include "io/channel.h"
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/*
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* This module provides helper functions that will be needed by
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* the various QIOChannel implementations, for creating watches
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* on file descriptors / sockets
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*/
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/**
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* qio_channel_create_fd_watch:
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* @ioc: the channel object
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* @fd: the file descriptor
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* @condition: the I/O condition
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*
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* Create a new main loop source that is able to
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* monitor the file descriptor @fd for the
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* I/O conditions in @condition. This is able
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* monitor block devices, character devices,
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* pipes but not plain files or, on Win32, sockets.
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*
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* Returns: the new main loop source
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*/
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GSource *qio_channel_create_fd_watch(QIOChannel *ioc,
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int fd,
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GIOCondition condition);
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/**
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* qio_channel_create_socket_watch:
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* @ioc: the channel object
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* @fd: the file descriptor
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* @condition: the I/O condition
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*
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* Create a new main loop source that is able to
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* monitor the file descriptor @fd for the
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* I/O conditions in @condition. This is equivalent
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* to qio_channel_create_fd_watch on POSIX systems
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* but not on Windows.
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*
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* Returns: the new main loop source
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*/
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GSource *qio_channel_create_socket_watch(QIOChannel *ioc,
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int fd,
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GIOCondition condition);
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/**
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* qio_channel_create_fd_pair_watch:
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* @ioc: the channel object
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* @fdread: the file descriptor for reading
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* @fdwrite: the file descriptor for writing
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* @condition: the I/O condition
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*
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* Create a new main loop source that is able to
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* monitor the pair of file descriptors @fdread
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* and @fdwrite for the I/O conditions in @condition.
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* This is intended for monitoring unidirectional
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* file descriptors such as pipes, where a pair
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* of descriptors is required for bidirectional
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* I/O
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*
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* Returns: the new main loop source
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*/
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GSource *qio_channel_create_fd_pair_watch(QIOChannel *ioc,
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int fdread,
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int fdwrite,
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GIOCondition condition);
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#endif /* QIO_CHANNEL_WATCH_H */
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