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conf: Move and use virDomainObjListRemoveLocked

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Rather than open code within virDomainObjListRemove, just call
the *Locked function.

Additionally, add comments to virDomainObjListRemove to describe
the usage model.

Signed-off-by: John Ferlan <jferlan@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This commit is contained in:
John Ferlan 2018-03-09 14:12:55 -05:00
parent 7ae289203a
commit 2d2ed7b6f6
1 changed files with 35 additions and 29 deletions
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64
src/conf/virdomainobjlist.c
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@ -355,26 +355,50 @@ virDomainObjPtr virDomainObjListAdd(virDomainObjListPtr doms,
}
/*
* The caller must hold a lock on the driver owning 'doms',
* and must also have locked 'dom', to ensure no one else
* is either waiting for 'dom' or still using it
/* The caller must hold lock on 'doms' in addition to 'virDomainObjListRemove'
* requirements
*
* Can be used to remove current element while iterating with
* virDomainObjListForEach
*/
void virDomainObjListRemove(virDomainObjListPtr doms,
virDomainObjPtr dom)
void
virDomainObjListRemoveLocked(virDomainObjListPtr doms,
virDomainObjPtr dom)
{
char uuidstr[VIR_UUID_STRING_BUFLEN];
dom->removing = true;
virUUIDFormat(dom->def->uuid, uuidstr);
virObjectRef(dom);
virObjectUnlock(dom);
virObjectRWLockWrite(doms);
virObjectLock(dom);
virHashRemoveEntry(doms->objs, uuidstr);
virHashRemoveEntry(doms->objsName, dom->def->name);
virObjectUnlock(dom);
}
/**
* @doms: Pointer to the domain object list
* @dom: Domain pointer from either after Add or FindBy* API where the
* @dom was successfully added to both the doms->objs and ->objsName
* hash tables that now would need to be removed.
*
* The caller must hold a lock on the driver owning 'doms',
* and must also have locked and ref counted 'dom', to ensure
* no one else is either waiting for 'dom' or still using it.
*
* When this function returns, @dom will be removed from the hash
* tables, unlocked, and returned with the refcnt that was present
* upon entry.
*/
void
virDomainObjListRemove(virDomainObjListPtr doms,
virDomainObjPtr dom)
{
dom->removing = true;
virObjectRef(dom);
virObjectUnlock(dom);
virObjectRWLockWrite(doms);
virObjectLock(dom);
virDomainObjListRemoveLocked(doms, dom);
virObjectUnref(dom);
virObjectRWUnlock(doms);
}
@ -446,24 +470,6 @@ virDomainObjListRename(virDomainObjListPtr doms,
return ret;
}
/* 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);
virHashRemoveEntry(doms->objs, uuidstr);
virHashRemoveEntry(doms->objsName, dom->def->name);
virObjectUnlock(dom);
}
static virDomainObjPtr
virDomainObjListLoadConfig(virDomainObjListPtr doms,