[libvirt] [PATCH 3/4] xen: make direct call when there is only one subdriver
Eric Blake
eblake at redhat.com
Thu Jul 21 21:39:04 UTC 2011
No need to use a for loop if we know there is exactly one client.
* src/xen/xen_driver.c (xenUnifiedClose): Call close
unconditionally, to match xenUnifiedOpen.
(xenUnifiedNodeGetInfo, xenUnifiedDomainCreateXML)
(xenUnifiedDomainSave, xenUnifiedDomainRestore)
(xenUnifiedDomainCoreDump, xenUnifiedDomainUpdateDeviceFlags):
Make direct call to lone implementation.
* src/xen/xend_internal.h (xenDaemonDomainCoreDump)
(xenDaemonUpdateDeviceFlags, xenDaemonCreateXML): Add prototypes.
* src/xen/xend_internal.c (xenDaemonDomainCoreDump)
(xenDaemonUpdateDeviceFlags, xenDaemonCreateXML): Export.
---
src/xen/xen_driver.c | 61 ++++++++++++----------------------------------
src/xen/xend_internal.c | 6 ++--
src/xen/xend_internal.h | 6 ++++
3 files changed, 25 insertions(+), 48 deletions(-)
diff --git a/src/xen/xen_driver.c b/src/xen/xen_driver.c
index 2bad8c4..b7122f0 100644
--- a/src/xen/xen_driver.c
+++ b/src/xen/xen_driver.c
@@ -414,7 +414,8 @@ fail:
clean:
VIR_DEBUG("Failed to activate a mandatory sub-driver");
for (i = 0 ; i < XEN_UNIFIED_NR_DRIVERS ; i++)
- if (priv->opened[i]) drivers[i]->xenClose(conn);
+ if (priv->opened[i])
+ drivers[i]->xenClose(conn);
virMutexDestroy(&priv->lock);
VIR_FREE(priv);
conn->privateData = NULL;
@@ -434,8 +435,8 @@ xenUnifiedClose (virConnectPtr conn)
virDomainEventCallbackListFree(priv->domainEventCallbacks);
for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
- if (priv->opened[i] && drivers[i]->xenClose)
- (void) drivers[i]->xenClose (conn);
+ if (priv->opened[i])
+ drivers[i]->xenClose(conn);
virMutexDestroy(&priv->lock);
VIR_FREE(conn->privateData);
@@ -537,14 +538,9 @@ static int
xenUnifiedNodeGetInfo (virConnectPtr conn, virNodeInfoPtr info)
{
GET_PRIVATE(conn);
- int i;
-
- for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
- if (priv->opened[i] &&
- drivers[i]->xenNodeGetInfo &&
- drivers[i]->xenNodeGetInfo (conn, info) == 0)
- return 0;
+ if (priv->opened[XEN_UNIFIED_XEND_OFFSET])
+ return xenDaemonNodeGetInfo(conn, info);
return -1;
}
@@ -621,15 +617,9 @@ xenUnifiedDomainCreateXML (virConnectPtr conn,
const char *xmlDesc, unsigned int flags)
{
GET_PRIVATE(conn);
- int i;
- virDomainPtr ret;
-
- for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
- if (priv->opened[i] && drivers[i]->xenDomainCreateXML) {
- ret = drivers[i]->xenDomainCreateXML (conn, xmlDesc, flags);
- if (ret) return ret;
- }
+ if (priv->opened[XEN_UNIFIED_XEND_OFFSET])
+ return xenDaemonCreateXML(conn, xmlDesc, flags);
return NULL;
}
@@ -1055,14 +1045,9 @@ static int
xenUnifiedDomainSave (virDomainPtr dom, const char *to)
{
GET_PRIVATE(dom->conn);
- int i;
-
- for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
- if (priv->opened[i] &&
- drivers[i]->xenDomainSave &&
- drivers[i]->xenDomainSave (dom, to) == 0)
- return 0;
+ if (priv->opened[XEN_UNIFIED_XEND_OFFSET])
+ return xenDaemonDomainSave(dom, to);
return -1;
}
@@ -1070,14 +1055,9 @@ static int
xenUnifiedDomainRestore (virConnectPtr conn, const char *from)
{
GET_PRIVATE(conn);
- int i;
-
- for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
- if (priv->opened[i] &&
- drivers[i]->xenDomainRestore &&
- drivers[i]->xenDomainRestore (conn, from) == 0)
- return 0;
+ if (priv->opened[XEN_UNIFIED_XEND_OFFSET])
+ return xenDaemonDomainRestore(conn, from);
return -1;
}
@@ -1085,14 +1065,9 @@ static int
xenUnifiedDomainCoreDump (virDomainPtr dom, const char *to, unsigned int flags)
{
GET_PRIVATE(dom->conn);
- int i;
-
- for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
- if (priv->opened[i] &&
- drivers[i]->xenDomainCoreDump &&
- drivers[i]->xenDomainCoreDump (dom, to, flags) == 0)
- return 0;
+ if (priv->opened[XEN_UNIFIED_XEND_OFFSET])
+ return xenDaemonDomainCoreDump(dom, to, flags);
return -1;
}
@@ -1630,13 +1605,9 @@ xenUnifiedDomainUpdateDeviceFlags (virDomainPtr dom, const char *xml,
unsigned int flags)
{
GET_PRIVATE(dom->conn);
- int i;
-
- for (i = 0; i < XEN_UNIFIED_NR_DRIVERS; ++i)
- if (priv->opened[i] && drivers[i]->xenDomainUpdateDeviceFlags &&
- drivers[i]->xenDomainUpdateDeviceFlags(dom, xml, flags) == 0)
- return 0;
+ if (priv->opened[XEN_UNIFIED_XEND_OFFSET])
+ return xenDaemonUpdateDeviceFlags(dom, xml, flags);
return -1;
}
diff --git a/src/xen/xend_internal.c b/src/xen/xend_internal.c
index bd64167..f56beb9 100644
--- a/src/xen/xend_internal.c
+++ b/src/xen/xend_internal.c
@@ -1638,7 +1638,7 @@ xenDaemonDomainSave(virDomainPtr domain, const char *filename)
*
* Returns 0 in case of success, -1 in case of error.
*/
-static int
+int
xenDaemonDomainCoreDump(virDomainPtr domain, const char *filename,
unsigned int flags)
{
@@ -2608,7 +2608,7 @@ xenDaemonLookupByUUID(virConnectPtr conn, const unsigned char *uuid)
*
* Returns a new domain object or NULL in case of failure
*/
-static virDomainPtr
+virDomainPtr
xenDaemonCreateXML(virConnectPtr conn, const char *xmlDesc,
unsigned int flags)
{
@@ -2841,7 +2841,7 @@ cleanup:
*
* Returns 0 in case of success, -1 in case of failure.
*/
-static int
+int
xenDaemonUpdateDeviceFlags(virDomainPtr domain, const char *xml,
unsigned int flags)
{
diff --git a/src/xen/xend_internal.h b/src/xen/xend_internal.h
index a5dd359..eee67b5 100644
--- a/src/xen/xend_internal.h
+++ b/src/xen/xend_internal.h
@@ -107,6 +107,8 @@ int xenDaemonDomainShutdown(virDomainPtr domain);
int xenDaemonDomainReboot(virDomainPtr domain, unsigned int flags);
int xenDaemonDomainDestroyFlags(virDomainPtr domain, unsigned int flags);
int xenDaemonDomainSave(virDomainPtr domain, const char *filename);
+int xenDaemonDomainCoreDump(virDomainPtr domain, const char *filename,
+ unsigned int flags);
int xenDaemonDomainRestore(virConnectPtr conn, const char *filename);
int xenDaemonDomainSetMemory(virDomainPtr domain, unsigned long memory);
int xenDaemonDomainSetMaxMemory(virDomainPtr domain, unsigned long memory);
@@ -140,6 +142,8 @@ int xenDaemonDomainGetVcpus (virDomainPtr domain,
int maxinfo,
unsigned char *cpumaps,
int maplen);
+int xenDaemonUpdateDeviceFlags(virDomainPtr domain, const char *xml,
+ unsigned int flags);
int xenDaemonDomainGetAutostart (virDomainPtr dom,
int *autostart);
int xenDaemonDomainSetAutostart (virDomainPtr domain,
@@ -149,6 +153,8 @@ int xenDaemonDomainSetAutostart (virDomainPtr domain,
extern struct xenUnifiedDriver xenDaemonDriver;
int xenDaemonInit (void);
+virDomainPtr xenDaemonCreateXML(virConnectPtr conn, const char *xmlDesc,
+ unsigned int flags);
virDomainPtr xenDaemonLookupByID(virConnectPtr conn, int id);
virDomainPtr xenDaemonLookupByUUID(virConnectPtr conn, const unsigned char *uuid);
virDomainPtr xenDaemonLookupByName(virConnectPtr conn, const char *domname);
--
1.7.4.4
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