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1355e0552e
* src/bridge.c, src/bridge.h, src/buf.c, src/buf.h, src/cgroup.c, src/cgroup.h, src/conf.c, src/conf.h, src/event.c, src/event.h, src/hash.c, src/hash.h, src/hostusb.c, src/hostusb.h, src/iptables.c, src/iptables.h, src/logging.c, src/logging.h, src/memory.c, src/memory.h, src/pci.c, src/pci.h, src/qparams.c, src/qparams.h, src/stats_linux.c, src/stats_linux.h, src/threads-pthread.c, src/threads-pthread.h, src/threads-win32.c, src/threads-win32.h, src/threads.c, src/threads.h, src/util.c, src/util.h, src/uuid.c, src/uuid.h, src/virterror.c, src/virterror_internal.h, src/xml.c, src/xml.h: Move all files into src/util/ * daemon/Makefile.am: Add -Isrc/util/ to build flags * src/Makefile.am: Add -Isrc/util/ to build flags and update for moved files * src/libvirt_private.syms: Export cgroup APIs since they're now in util rather than linking directly to drivers * src/xen/xs_internal.c: Disable bogus virEventRemoveHandle call when built under PROXY * proxy/Makefile.am: Update for changed file locations. Remove bogus build of event.c * tools/Makefile.am, tests/Makefile.am: Add -Isrc/util/ to build flags
102 lines
3.2 KiB
C
102 lines
3.2 KiB
C
/*
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* event.h: event loop for monitoring file handles
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*
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* Copyright (C) 2007 Daniel P. Berrange
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* Copyright (C) 2007 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 2.1 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Daniel P. Berrange <berrange@redhat.com>
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*/
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#ifndef __VIR_EVENT_H__
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#define __VIR_EVENT_H__
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#include "internal.h"
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/**
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* virEventAddHandle: register a callback for monitoring file handle events
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*
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* @fd: file handle to monitor for events
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* @events: bitset of events to watch from virEventHandleType constants
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* @cb: callback to invoke when an event occurs
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* @opaque: user data to pass to callback
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*
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* returns -1 if the file handle cannot be registered, 0 upon success
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*/
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int virEventAddHandle(int fd, int events,
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virEventHandleCallback cb,
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void *opaque,
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virFreeCallback ff);
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/**
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* virEventUpdateHandle: change event set for a monitored file handle
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*
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* @watch: watch whose file handle to update
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* @events: bitset of events to watch from virEventHandleType constants
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*
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* Will not fail if fd exists
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*/
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void virEventUpdateHandle(int watch, int events);
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/**
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* virEventRemoveHandle: unregister a callback from a file handle
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*
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* @watch: watch whose file handle to remove
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*
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* returns -1 if the file handle was not registered, 0 upon success
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*/
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int virEventRemoveHandle(int watch);
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/**
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* virEventAddTimeout: register a callback for a timer event
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*
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* @frequency: time between events in milliseconds
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* @cb: callback to invoke when an event occurs
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* @opaque: user data to pass to callback
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*
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* Setting frequency to -1 will disable the timer. Setting the frequency
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* to zero will cause it to fire on every event loop iteration.
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*
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* returns -1 if the file handle cannot be registered, a positive
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* integer timer id upon success
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*/
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int virEventAddTimeout(int frequency,
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virEventTimeoutCallback cb,
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void *opaque,
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virFreeCallback ff);
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/**
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* virEventUpdateTimeoutImpl: change frequency for a timer
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*
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* @timer: timer id to change
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* @frequency: time between events in milliseconds
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*
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* Setting frequency to -1 will disable the timer. Setting the frequency
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* to zero will cause it to fire on every event loop iteration.
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*
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* Will not fail if timer exists
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*/
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void virEventUpdateTimeout(int timer, int frequency);
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/**
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* virEventRemoveTimeout: unregister a callback for a timer
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*
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* @timer: the timer id to remove
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*
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* returns -1 if the timer was not registered, 0 upon success
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*/
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int virEventRemoveTimeout(int timer);
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#endif /* __VIR_EVENT_H__ */
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