[PATCH v2 2/2] conf: Rework/rename virDomainObjListFindByIDRef

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Rework the code such that virDomainObjListFindByID will always
return a locked/ref counted object so that the callers can
always do the same cleanup logic to call virDomainObjEndAPI.
Makes accessing the objects much more consistent.

NB:
There were 2 callers (lxcDomainLookupByID and qemuDomainLookupByID)
that were already using the ByID name, but not virDomainObjEndAPI -
these were changed as well in this update/patch.

Signed-off-by: John Ferlan <jferlan@xxxxxxxxxx>
---
 src/bhyve/bhyve_driver.c    |  2 +-
 src/conf/virdomainobjlist.c | 35 +++++++++--------------------------
 src/conf/virdomainobjlist.h |  2 --
 src/libvirt_private.syms    |  1 -
 src/libxl/libxl_domain.c    |  2 +-
 src/libxl/libxl_driver.c    |  2 +-
 src/lxc/lxc_driver.c        |  3 +--
 src/openvz/openvz_driver.c  |  2 +-
 src/qemu/qemu_driver.c      |  5 ++---
 src/test/test_driver.c      |  2 +-
 src/uml/uml_driver.c        |  2 +-
 src/vmware/vmware_driver.c  |  2 +-
 src/vz/vz_driver.c          |  2 +-
 13 files changed, 20 insertions(+), 42 deletions(-)

diff --git a/src/bhyve/bhyve_driver.c b/src/bhyve/bhyve_driver.c
index bd8c6b30ed..768578a43f 100644
--- a/src/bhyve/bhyve_driver.c
+++ b/src/bhyve/bhyve_driver.c
@@ -844,7 +844,7 @@ bhyveDomainLookupByID(virConnectPtr conn,
     virDomainObjPtr vm;
     virDomainPtr dom = NULL;
 
-    vm = virDomainObjListFindByIDRef(privconn->domains, id);
+    vm = virDomainObjListFindByID(privconn->domains, id);
 
     if (!vm) {
         virReportError(VIR_ERR_NO_DOMAIN,
diff --git a/src/conf/virdomainobjlist.c b/src/conf/virdomainobjlist.c
index 02b52465d0..d57ed10a5f 100644
--- a/src/conf/virdomainobjlist.c
+++ b/src/conf/virdomainobjlist.c
@@ -109,44 +109,27 @@ static int virDomainObjListSearchID(const void *payload,
     return want;
 }
 
-static virDomainObjPtr
-virDomainObjListFindByIDInternal(virDomainObjListPtr doms,
-                                 int id,
-                                 bool ref)
+
+virDomainObjPtr
+virDomainObjListFindByID(virDomainObjListPtr doms,
+                         int id)
 {
     virDomainObjPtr obj;
+
     virObjectRWLockRead(doms);
     obj = virHashSearch(doms->objs, virDomainObjListSearchID, &id, NULL);
-    if (ref) {
-        virObjectRef(obj);
-        virObjectRWUnlock(doms);
-    }
+    virObjectRef(obj);
+    virObjectRWUnlock(doms);
     if (obj) {
         virObjectLock(obj);
         if (obj->removing) {
             virObjectUnlock(obj);
-            if (ref)
-                virObjectUnref(obj);
+            virObjectUnref(obj);
             obj = NULL;
         }
     }
-    if (!ref)
-        virObjectRWUnlock(doms);
-    return obj;
-}
-
-virDomainObjPtr
-virDomainObjListFindByID(virDomainObjListPtr doms,
-                         int id)
-{
-    return virDomainObjListFindByIDInternal(doms, id, false);
-}
 
-virDomainObjPtr
-virDomainObjListFindByIDRef(virDomainObjListPtr doms,
-                            int id)
-{
-    return virDomainObjListFindByIDInternal(doms, id, true);
+    return obj;
 }
 
 
diff --git a/src/conf/virdomainobjlist.h b/src/conf/virdomainobjlist.h
index 1b77a95ba9..7e2dece3aa 100644
--- a/src/conf/virdomainobjlist.h
+++ b/src/conf/virdomainobjlist.h
@@ -34,8 +34,6 @@ virDomainObjListPtr virDomainObjListNew(void);
 
 virDomainObjPtr virDomainObjListFindByID(virDomainObjListPtr doms,
                                          int id);
-virDomainObjPtr virDomainObjListFindByIDRef(virDomainObjListPtr doms,
-                                            int id);
 virDomainObjPtr virDomainObjListFindByUUID(virDomainObjListPtr doms,
                                            const unsigned char *uuid);
 virDomainObjPtr virDomainObjListFindByName(virDomainObjListPtr doms,
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index f6c76d4341..d2728749fb 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -952,7 +952,6 @@ virDomainObjListCollect;
 virDomainObjListConvert;
 virDomainObjListExport;
 virDomainObjListFindByID;
-virDomainObjListFindByIDRef;
 virDomainObjListFindByName;
 virDomainObjListFindByUUID;
 virDomainObjListForEach;
diff --git a/src/libxl/libxl_domain.c b/src/libxl/libxl_domain.c
index e401327df4..d4859d6707 100644
--- a/src/libxl/libxl_domain.c
+++ b/src/libxl/libxl_domain.c
@@ -450,7 +450,7 @@ libxlDomainShutdownThread(void *opaque)
 
     cfg = libxlDriverConfigGet(driver);
 
-    vm = virDomainObjListFindByIDRef(driver->domains, ev->domid);
+    vm = virDomainObjListFindByID(driver->domains, ev->domid);
     if (!vm) {
         VIR_INFO("Received event for unknown domain ID %d", ev->domid);
         goto cleanup;
diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c
index 24553c7272..55a93a489b 100644
--- a/src/libxl/libxl_driver.c
+++ b/src/libxl/libxl_driver.c
@@ -1082,7 +1082,7 @@ libxlDomainLookupByID(virConnectPtr conn, int id)
     virDomainObjPtr vm;
     virDomainPtr dom = NULL;
 
-    vm = virDomainObjListFindByIDRef(driver->domains, id);
+    vm = virDomainObjListFindByID(driver->domains, id);
     if (!vm) {
         virReportError(VIR_ERR_NO_DOMAIN, NULL);
         goto cleanup;
diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index 8773a3fd45..ca01d369d5 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -262,8 +262,7 @@ static virDomainPtr lxcDomainLookupByID(virConnectPtr conn,
     dom = virGetDomain(conn, vm->def->name, vm->def->uuid, vm->def->id);
 
  cleanup:
-    if (vm)
-        virObjectUnlock(vm);
+    virDomainObjEndAPI(&vm);
     return dom;
 }
 
diff --git a/src/openvz/openvz_driver.c b/src/openvz/openvz_driver.c
index f5a5526d28..c10d6df663 100644
--- a/src/openvz/openvz_driver.c
+++ b/src/openvz/openvz_driver.c
@@ -342,7 +342,7 @@ static virDomainPtr openvzDomainLookupByID(virConnectPtr conn,
     virDomainPtr dom = NULL;
 
     openvzDriverLock(driver);
-    vm = virDomainObjListFindByIDRef(driver->domains, id);
+    vm = virDomainObjListFindByID(driver->domains, id);
     openvzDriverUnlock(driver);
 
     if (!vm) {
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 8a5b049296..7484b00e23 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -1529,7 +1529,7 @@ static virDomainPtr qemuDomainLookupByID(virConnectPtr conn,
     virDomainObjPtr vm;
     virDomainPtr dom = NULL;
 
-    vm  = virDomainObjListFindByID(driver->domains, id);
+    vm = virDomainObjListFindByID(driver->domains, id);
 
     if (!vm) {
         virReportError(VIR_ERR_NO_DOMAIN,
@@ -1543,8 +1543,7 @@ static virDomainPtr qemuDomainLookupByID(virConnectPtr conn,
     dom = virGetDomain(conn, vm->def->name, vm->def->uuid, vm->def->id);
 
  cleanup:
-    if (vm)
-        virObjectUnlock(vm);
+    virDomainObjEndAPI(&vm);
     return dom;
 }
 
diff --git a/src/test/test_driver.c b/src/test/test_driver.c
index 249932de06..a1888c0c9f 100644
--- a/src/test/test_driver.c
+++ b/src/test/test_driver.c
@@ -1708,7 +1708,7 @@ static virDomainPtr testDomainLookupByID(virConnectPtr conn,
     virDomainPtr ret = NULL;
     virDomainObjPtr dom;
 
-    if (!(dom = virDomainObjListFindByIDRef(privconn->domains, id))) {
+    if (!(dom = virDomainObjListFindByID(privconn->domains, id))) {
         virReportError(VIR_ERR_NO_DOMAIN, NULL);
         return NULL;
     }
diff --git a/src/uml/uml_driver.c b/src/uml/uml_driver.c
index 0bafd0902e..b50ba1ba64 100644
--- a/src/uml/uml_driver.c
+++ b/src/uml/uml_driver.c
@@ -1379,7 +1379,7 @@ static virDomainPtr umlDomainLookupByID(virConnectPtr conn,
     virDomainPtr dom = NULL;
 
     umlDriverLock(driver);
-    vm = virDomainObjListFindByIDRef(driver->domains, id);
+    vm = virDomainObjListFindByID(driver->domains, id);
     umlDriverUnlock(driver);
 
     if (!vm) {
diff --git a/src/vmware/vmware_driver.c b/src/vmware/vmware_driver.c
index f94d192fd1..21c10b6605 100644
--- a/src/vmware/vmware_driver.c
+++ b/src/vmware/vmware_driver.c
@@ -825,7 +825,7 @@ vmwareDomainLookupByID(virConnectPtr conn, int id)
     virDomainPtr dom = NULL;
 
     vmwareDriverLock(driver);
-    vm = virDomainObjListFindByIDRef(driver->domains, id);
+    vm = virDomainObjListFindByID(driver->domains, id);
     vmwareDriverUnlock(driver);
 
     if (!vm) {
diff --git a/src/vz/vz_driver.c b/src/vz/vz_driver.c
index 8f8720a037..d3fcae491a 100644
--- a/src/vz/vz_driver.c
+++ b/src/vz/vz_driver.c
@@ -555,7 +555,7 @@ vzDomainLookupByID(virConnectPtr conn, int id)
     virDomainPtr ret = NULL;
     virDomainObjPtr dom;
 
-    dom = virDomainObjListFindByIDRef(privconn->driver->domains, id);
+    dom = virDomainObjListFindByID(privconn->driver->domains, id);
 
     if (dom == NULL) {
         virReportError(VIR_ERR_NO_DOMAIN, NULL);
-- 
2.13.6

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