[libvirt] [PATCH v3 15/19] util: convert virIdentity class to use GObject
Daniel P. Berrangé
berrange at redhat.com
Thu Oct 10 10:54:09 UTC 2019
Converting from virObject to GObject is reasonably straightforward,
as illustrated by this patch for virIdentity
In the header file
- Remove
typedef struct _virIdentity virIdentity
- Add
#define VIR_TYPE_IDENTITY virIdentity_get_type ()
G_DECLARE_FINAL_TYPE (virIdentity, vir_identity, VIR, IDENTITY, GObject);
Which provides the typedef we just removed, and class
declaration boilerplate and various other constants/macros.
In the source file
- Change 'virObject parent' to 'GObject parent' in the struct
- Remove the virClass variable and its initializing call
- Add
G_DEFINE_TYPE(virIdentity, vir_identity, G_TYPE_OBJECT)
which declares the instance & class constructor functions
- Add an impl of the instance & class constructors
wiring up the finalize method to point to our dispose impl
In all files
- Replace VIR_AUTOUNREF(virIdentityPtr) with g_autoptr(virIdentity)
- Replace virObjectRef/Unref with g_object_ref/unref. Note
the latter functions do *NOT* accept a NULL object where as
libvirt's do. If you replace g_object_unref with g_clear_object
it is NULL safe, but also clears the pointer.
Reviewed-by: Ján Tomko <jtomko at redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange at redhat.com>
---
m4/virt-glib.m4 | 4 +--
src/qemu/qemu_process.c | 4 +--
src/rpc/virnetserverclient.c | 10 +++----
src/util/viridentity.c | 56 ++++++++++++++++++++++--------------
src/util/viridentity.h | 9 +++---
tests/viridentitytest.c | 5 +---
6 files changed, 49 insertions(+), 39 deletions(-)
diff --git a/m4/virt-glib.m4 b/m4/virt-glib.m4
index 5a5bc19660..eb2c77b25b 100644
--- a/m4/virt-glib.m4
+++ b/m4/virt-glib.m4
@@ -24,10 +24,10 @@ AC_DEFUN([LIBVIRT_ARG_GLIB], [
AC_DEFUN([LIBVIRT_CHECK_GLIB],[
GLIB_REQUIRED=2.48.0
- LIBVIRT_CHECK_PKG([GLIB], [glib-2.0], [$GLIB_REQUIRED])
+ LIBVIRT_CHECK_PKG([GLIB], [glib-2.0 gobject-2.0], [$GLIB_REQUIRED])
if test "$with_glib" = "no" ; then
- AC_MSG_ERROR([glib-2.0 >= $GLIB_REQUIRED is required for libvirt])
+ AC_MSG_ERROR([glib-2.0, gobject-2.0 >= $GLIB_REQUIRED are required for libvirt])
fi
])
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index c14c09da11..3b45b2f641 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -8040,7 +8040,7 @@ qemuProcessReconnect(void *opaque)
bool tryMonReconn = false;
virIdentitySetCurrent(data->identity);
- virObjectUnref(data->identity);
+ g_clear_object(&data->identity);
VIR_FREE(data);
qemuDomainObjRestoreJob(obj, &oldjob);
@@ -8353,7 +8353,7 @@ qemuProcessReconnectHelper(virDomainObjPtr obj,
virDomainObjEndAPI(&obj);
virNWFilterUnlockFilterUpdates();
- virObjectUnref(data->identity);
+ g_clear_object(&data->identity);
VIR_FREE(data);
return -1;
}
diff --git a/src/rpc/virnetserverclient.c b/src/rpc/virnetserverclient.c
index 79287572b6..8482c5c29c 100644
--- a/src/rpc/virnetserverclient.c
+++ b/src/rpc/virnetserverclient.c
@@ -829,7 +829,7 @@ virIdentityPtr virNetServerClientGetIdentity(virNetServerClientPtr client)
if (!client->identity)
client->identity = virNetServerClientCreateIdentity(client);
if (client->identity)
- ret = virObjectRef(client->identity);
+ ret = g_object_ref(client->identity);
virObjectUnlock(client);
return ret;
}
@@ -839,10 +839,10 @@ void virNetServerClientSetIdentity(virNetServerClientPtr client,
virIdentityPtr identity)
{
virObjectLock(client);
- virObjectUnref(client->identity);
+ g_clear_object(&client->identity);
client->identity = identity;
if (client->identity)
- virObjectRef(client->identity);
+ g_object_ref(client->identity);
virObjectUnlock(client);
}
@@ -979,7 +979,7 @@ void virNetServerClientDispose(void *obj)
if (client->privateData)
client->privateDataFreeFunc(client->privateData);
- virObjectUnref(client->identity);
+ g_clear_object(&client->identity);
#if WITH_SASL
virObjectUnref(client->sasl);
@@ -1674,7 +1674,7 @@ virNetServerClientGetInfo(virNetServerClientPtr client,
goto cleanup;
}
- *identity = virObjectRef(client->identity);
+ *identity = g_object_ref(client->identity);
ret = 0;
cleanup:
diff --git a/src/util/viridentity.c b/src/util/viridentity.c
index 6636077161..8cc2db2568 100644
--- a/src/util/viridentity.c
+++ b/src/util/viridentity.c
@@ -43,25 +43,29 @@
VIR_LOG_INIT("util.identity");
struct _virIdentity {
- virObject parent;
+ GObject parent;
int nparams;
int maxparams;
virTypedParameterPtr params;
};
-static virClassPtr virIdentityClass;
+G_DEFINE_TYPE(virIdentity, vir_identity, G_TYPE_OBJECT)
+
static virThreadLocal virIdentityCurrent;
-static void virIdentityDispose(void *obj);
+static void virIdentityFinalize(GObject *obj);
-static int virIdentityOnceInit(void)
+static void virIdentityCurrentCleanup(void *ident)
{
- if (!VIR_CLASS_NEW(virIdentity, virClassForObject()))
- return -1;
+ if (ident)
+ g_object_unref(ident);
+}
+static int virIdentityOnceInit(void)
+{
if (virThreadLocalInit(&virIdentityCurrent,
- (virThreadLocalCleanup)virObjectUnref) < 0) {
+ virIdentityCurrentCleanup) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Cannot initialize thread local for current identity"));
return -1;
@@ -72,13 +76,24 @@ static int virIdentityOnceInit(void)
VIR_ONCE_GLOBAL_INIT(virIdentity);
+static void vir_identity_init(virIdentity *ident G_GNUC_UNUSED)
+{
+}
+
+static void vir_identity_class_init(virIdentityClass *klass)
+{
+ GObjectClass *obj = G_OBJECT_CLASS(klass);
+
+ obj->finalize = virIdentityFinalize;
+}
+
/**
* virIdentityGetCurrent:
*
* Get the current identity associated with this thread. The
* caller will own a reference to the returned identity, but
* must not modify the object in any way, other than to
- * release the reference when done with virObjectUnref
+ * release the reference when done with g_object_unref
*
* Returns: a reference to the current identity, or NULL
*/
@@ -90,7 +105,9 @@ virIdentityPtr virIdentityGetCurrent(void)
return NULL;
ident = virThreadLocalGet(&virIdentityCurrent);
- return virObjectRef(ident);
+ if (ident)
+ g_object_ref(ident);
+ return ident;
}
@@ -113,10 +130,11 @@ int virIdentitySetCurrent(virIdentityPtr ident)
old = virThreadLocalGet(&virIdentityCurrent);
if (virThreadLocalSet(&virIdentityCurrent,
- virObjectRef(ident)) < 0) {
+ ident ? g_object_ref(ident) : NULL) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to set thread local identity"));
- virObjectUnref(ident);
+ if (ident)
+ g_object_unref(ident);
return -1;
}
@@ -197,23 +215,17 @@ virIdentityPtr virIdentityGetSystem(void)
*/
virIdentityPtr virIdentityNew(void)
{
- virIdentityPtr ident;
-
- if (virIdentityInitialize() < 0)
- return NULL;
-
- if (!(ident = virObjectNew(virIdentityClass)))
- return NULL;
-
- return ident;
+ return VIR_IDENTITY(g_object_new(VIR_TYPE_IDENTITY, NULL));
}
-static void virIdentityDispose(void *object)
+static void virIdentityFinalize(GObject *object)
{
- virIdentityPtr ident = object;
+ virIdentityPtr ident = VIR_IDENTITY(object);
virTypedParamsFree(ident->params, ident->nparams);
+
+ G_OBJECT_CLASS(vir_identity_parent_class)->finalize(object);
}
diff --git a/src/util/viridentity.h b/src/util/viridentity.h
index 7513dd4e35..2940e02054 100644
--- a/src/util/viridentity.h
+++ b/src/util/viridentity.h
@@ -21,12 +21,13 @@
#pragma once
-#include "virobject.h"
+#include "internal.h"
+#include <glib-object.h>
-typedef struct _virIdentity virIdentity;
-typedef virIdentity *virIdentityPtr;
+#define VIR_TYPE_IDENTITY vir_identity_get_type()
+G_DECLARE_FINAL_TYPE(virIdentity, vir_identity, VIR, IDENTITY, GObject);
-G_DEFINE_AUTOPTR_CLEANUP_FUNC(virIdentity, virObjectUnref);
+typedef virIdentity *virIdentityPtr;
virIdentityPtr virIdentityGetCurrent(void);
int virIdentitySetCurrent(virIdentityPtr ident);
diff --git a/tests/viridentitytest.c b/tests/viridentitytest.c
index db041a98a8..90e7247817 100644
--- a/tests/viridentitytest.c
+++ b/tests/viridentitytest.c
@@ -38,13 +38,10 @@ VIR_LOG_INIT("tests.identitytest");
static int testIdentityAttrs(const void *data ATTRIBUTE_UNUSED)
{
- g_autoptr(virIdentity) ident = NULL;
+ g_autoptr(virIdentity) ident = virIdentityNew();
const char *val;
int rc;
- if (!(ident = virIdentityNew()))
- return -1;
-
if (virIdentitySetUserName(ident, "fred") < 0)
return -1;
--
2.21.0
More information about the libvir-list
mailing list