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event-test: Use goto cleanup instead of if else jungle

Browse Source 
Like in the rest of our code we tend to prefer 'goto' and
'cleanup' over 'if else' code structure. Do the same here.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Michal Privoznik 2016-03-16 09:55:47 +01:00
parent 950a90d489
commit bde75a895d
1 changed files with 71 additions and 64 deletions
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135
examples/object-events/event-test.c
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@ -616,6 +616,8 @@ static void stop(int sig)
int main(int argc, char **argv)
{
int ret = EXIT_FAILURE;
virConnectPtr dconn = NULL;
int callback1ret = -1;
int callback2ret = -1;
int callback3ret = -1;
@ -643,28 +645,27 @@ int main(int argc, char **argv)
if (argc > 1 && STREQ(argv[1], "--help")) {
usage(argv[0]);
return -1;
goto cleanup;
}
if (virInitialize() < 0) {
fprintf(stderr, "Failed to initialize libvirt");
return -1;
goto cleanup;
}
if (virEventRegisterDefaultImpl() < 0) {
virErrorPtr err = virGetLastError();
fprintf(stderr, "Failed to register event implementation: %s\n",
err && err->message ? err->message: "Unknown error");
return -1;
goto cleanup;
}
virConnectPtr dconn = NULL;
dconn = virConnectOpenAuth(argc > 1 ? argv[1] : NULL,
virConnectAuthPtrDefault,
VIR_CONNECT_RO);
if (!dconn) {
printf("error opening\n");
return -1;
goto cleanup;
}
virConnectRegisterCloseCallback(dconn,
@ -769,69 +770,75 @@ int main(int argc, char **argv)
VIR_DOMAIN_EVENT_CALLBACK(myDomainEventDeviceAddedCallback),
strdup("device added"), myFreeFunc);
if ((callback1ret != -1) &&
(callback2ret != -1) &&
(callback3ret != -1) &&
(callback4ret != -1) &&
(callback5ret != -1) &&
(callback6ret != -1) &&
(callback7ret != -1) &&
(callback9ret != -1) &&
(callback10ret != -1) &&
(callback11ret != -1) &&
(callback12ret != -1) &&
(callback13ret != -1) &&
(callback14ret != -1) &&
(callback15ret != -1) &&
(callback16ret != -1) &&
(callback17ret != -1) &&
(callback18ret != -1) &&
(callback19ret != -1)) {
if (virConnectSetKeepAlive(dconn, 5, 3) < 0) {
virErrorPtr err = virGetLastError();
fprintf(stderr, "Failed to start keepalive protocol: %s\n",
err && err->message ? err->message : "Unknown error");
run = 0;
}
if ((callback1ret == -1) ||
(callback2ret == -1) ||
(callback3ret == -1) ||
(callback4ret == -1) ||
(callback5ret == -1) ||
(callback6ret == -1) ||
(callback7ret == -1) ||
(callback9ret == -1) ||
(callback10ret == -1) ||
(callback11ret == -1) ||
(callback12ret == -1) ||
(callback13ret == -1) ||
(callback14ret == -1) ||
(callback15ret == -1) ||
(callback16ret == -1) ||
(callback17ret == -1) ||
(callback18ret == -1) ||
(callback19ret == -1))
goto cleanup;
while (run) {
if (virEventRunDefaultImpl() < 0) {
virErrorPtr err = virGetLastError();
fprintf(stderr, "Failed to run event loop: %s\n",
err && err->message ? err->message : "Unknown error");
}
}
VIR_DEBUG("Deregistering event handlers");
virConnectDomainEventDeregister(dconn, myDomainEventCallback1);
virConnectDomainEventDeregisterAny(dconn, callback2ret);
virConnectDomainEventDeregisterAny(dconn, callback3ret);
virConnectDomainEventDeregisterAny(dconn, callback4ret);
virConnectDomainEventDeregisterAny(dconn, callback5ret);
virConnectDomainEventDeregisterAny(dconn, callback6ret);
virConnectDomainEventDeregisterAny(dconn, callback7ret);
virConnectDomainEventDeregisterAny(dconn, callback9ret);
virConnectDomainEventDeregisterAny(dconn, callback10ret);
virConnectDomainEventDeregisterAny(dconn, callback11ret);
virConnectDomainEventDeregisterAny(dconn, callback12ret);
virConnectDomainEventDeregisterAny(dconn, callback13ret);
virConnectDomainEventDeregisterAny(dconn, callback14ret);
virConnectDomainEventDeregisterAny(dconn, callback15ret);
virConnectNetworkEventDeregisterAny(dconn, callback16ret);
virConnectDomainEventDeregisterAny(dconn, callback17ret);
virConnectDomainEventDeregisterAny(dconn, callback18ret);
virConnectDomainEventDeregisterAny(dconn, callback19ret);
if (callback8ret != -1)
virConnectDomainEventDeregisterAny(dconn, callback8ret);
if (virConnectSetKeepAlive(dconn, 5, 3) < 0) {
virErrorPtr err = virGetLastError();
fprintf(stderr, "Failed to start keepalive protocol: %s\n",
err && err->message ? err->message : "Unknown error");
run = 0;
}
while (run) {
if (virEventRunDefaultImpl() < 0) {
virErrorPtr err = virGetLastError();
fprintf(stderr, "Failed to run event loop: %s\n",
err && err->message ? err->message : "Unknown error");
}
}
VIR_DEBUG("Deregistering event handlers");
virConnectDomainEventDeregister(dconn, myDomainEventCallback1);
virConnectDomainEventDeregisterAny(dconn, callback2ret);
virConnectDomainEventDeregisterAny(dconn, callback3ret);
virConnectDomainEventDeregisterAny(dconn, callback4ret);
virConnectDomainEventDeregisterAny(dconn, callback5ret);
virConnectDomainEventDeregisterAny(dconn, callback6ret);
virConnectDomainEventDeregisterAny(dconn, callback7ret);
virConnectDomainEventDeregisterAny(dconn, callback9ret);
virConnectDomainEventDeregisterAny(dconn, callback10ret);
virConnectDomainEventDeregisterAny(dconn, callback11ret);
virConnectDomainEventDeregisterAny(dconn, callback12ret);
virConnectDomainEventDeregisterAny(dconn, callback13ret);
virConnectDomainEventDeregisterAny(dconn, callback14ret);
virConnectDomainEventDeregisterAny(dconn, callback15ret);
virConnectNetworkEventDeregisterAny(dconn, callback16ret);
virConnectDomainEventDeregisterAny(dconn, callback17ret);
virConnectDomainEventDeregisterAny(dconn, callback18ret);
virConnectDomainEventDeregisterAny(dconn, callback19ret);
if (callback8ret != -1)
virConnectDomainEventDeregisterAny(dconn, callback8ret);
virConnectUnregisterCloseCallback(dconn, connectClose);
ret = EXIT_SUCCESS;
VIR_DEBUG("Closing connection");
if (dconn && virConnectClose(dconn) < 0)
printf("error closing\n");
printf("done\n");
return 0;
cleanup:
if (dconn) {
VIR_DEBUG("Closing connection");
if (virConnectClose(dconn) < 0)
printf("error closing\n");
printf("done\n");
}
return ret;
}