[libvirt] [PATCH v2 06/14] conf: virDomainObjListRemoveLocked function

[Marek Marczykowski-Górecki]

While iterating with virDomainObjListForEach it is safe to remove
current element. But while iterating, 'doms' lock is already taken, so
can't use standard virDomainObjListRemove. So introduce
virDomainObjListRemoveLocked for this purpose.

Changes in v2:
 - fix indentation

Signed-off-by: Marek Marczykowski-Górecki <marma...@invisiblethingslab.com>
---
 src/conf/domain_conf.c   | 17 +++++++++++++++++
 src/conf/domain_conf.h   |  2 ++
 src/libvirt_private.syms |  1 +
 3 files changed, 20 insertions(+)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 5350c56..a4010da 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -2336,6 +2336,23 @@ void virDomainObjListRemove(virDomainObjListPtr doms,
     virObjectUnlock(doms);
 }
 
+/* The caller must hold lock on 'doms' in addition to 'virDomainObjListRemove'
+ * requirements
+ *
+ * Can be used to remove current element while iterating with
+ * virDomainObjListForEach
+ */
+void virDomainObjListRemoveLocked(virDomainObjListPtr doms,
+                                  virDomainObjPtr dom)
+{
+    char uuidstr[VIR_UUID_STRING_BUFLEN];
+
+    virUUIDFormat(dom->def->uuid, uuidstr);
+    virObjectUnlock(dom);
+
+    virHashRemoveEntry(doms->objs, uuidstr);
+}
+
 static int
 virDomainDeviceCCWAddressIsValid(virDomainDeviceCCWAddressPtr addr)
 {
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 24d3809..b8dfe19 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2234,6 +2234,8 @@ virDomainDefPtr 
virDomainObjCopyPersistentDef(virDomainObjPtr dom,
 
 void virDomainObjListRemove(virDomainObjListPtr doms,
                             virDomainObjPtr dom);
+void virDomainObjListRemoveLocked(virDomainObjListPtr doms,
+                                  virDomainObjPtr dom);
 
 virDomainDeviceDefPtr virDomainDeviceDefParse(const char *xmlStr,
                                               virDomainDefPtr def,
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 042081f..e21a14d 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -274,6 +274,7 @@ virDomainObjListLoadAllConfigs;
 virDomainObjListNew;
 virDomainObjListNumOfDomains;
 virDomainObjListRemove;
+virDomainObjListRemoveLocked;
 virDomainObjNew;
 virDomainObjSetDefTransient;
 virDomainObjSetState;
-- 
1.8.1.4

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