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event: add API for requiring an event loop impl to be registered

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Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrangé 2019-05-23 11:51:48 +01:00
parent cccc3fc1bb
commit 2e07a1e146
3 changed files with 27 additions and 0 deletions
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1
po/POTFILES.in
View File

@ -240,6 +240,7 @@
@SRCDIR@/src/util/virdnsmasq.c
@SRCDIR@/src/util/virerror.c
@SRCDIR@/src/util/virerror.h
@SRCDIR@/src/util/virevent.c
@SRCDIR@/src/util/vireventpoll.c
@SRCDIR@/src/util/virfcp.c
@SRCDIR@/src/util/virfdstream.c

24
src/util/virevent.c
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@ -26,6 +26,7 @@
#include "virlog.h"
#include "virerror.h"
#define VIR_FROM_THIS VIR_FROM_EVENT
VIR_LOG_INIT("util.event");
@ -251,6 +252,27 @@ void virEventRegisterImpl(virEventAddHandleFunc addHandle,
removeTimeoutImpl = removeTimeout;
}
/**
* virEventRequireImpl:
*
* Require that there is an event loop implementation
* registered.
*
* Returns: -1 if no event loop is registered, 0 otherwise
*/
int virEventRequireImpl(void)
{
if (!addHandleImpl || !addTimeoutImpl) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("An event loop implementation must be registered"));
return -1;
}
return 0;
}
/**
* virEventRegisterDefaultImpl:
*
@ -276,6 +298,8 @@ int virEventRegisterDefaultImpl(void)
{
VIR_DEBUG("registering default event implementation");
virInitialize();
virResetLastError();
if (virEventPollInit() < 0) {

2
src/util/virevent.h
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@ -21,3 +21,5 @@
#pragma once
#include "internal.h"
int virEventRequireImpl(void);