C++ (Cpp) virOnce示例

示例#1

文件： libvirt-admin.c 项目： joe-nas/libvirt

/**
 * virAdmInitialize:
 *
 * Initialize the library.
 *
 * Returns 0 in case of success, -1 in case of error
 */
static int
virAdmInitialize(void)
{
    if (virOnce(&virAdmGlobalOnce, virAdmGlobalInit) < 0)
        return -1;

    if (virAdmGlobalError)
        return -1;

    return 0;
}

示例#2

文件： virdbus.c 项目： cbosdo/libvirt

static DBusConnection *
virDBusGetSystemBusInternal(void)
{
    if (virOnce(&systemonce, virDBusSystemBusInit) < 0) {
        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                       _("Unable to run one time DBus initializer"));
        return NULL;
    }

    return systembus;
}

示例#3

文件： virdbus.c 项目： avdv/libvirt

DBusConnection *virDBusGetSessionBus(void)
{
    if (virOnce(&sessiononce, virDBusSessionBusInit) < 0) {
        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                       _("Unable to run one time DBus initializer"));
        return NULL;
    }

    if (!sessionbus) {
        virReportError(VIR_ERR_INTERNAL_ERROR,
                       _("Unable to get DBus session bus connection: %s"),
                       sessiondbuserr.message ? sessiondbuserr.message : "watch setup failed");
        return NULL;
    }

    return sessionbus;
}