[libvirt] [PATCH v2 2/2] conf: Rework/rename virDomainObjListFindByIDRef
John Ferlan
jferlan at redhat.com
Fri Apr 20 13:08:36 UTC 2018
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 at redhat.com>
---
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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