[libvirt] [PATCH v2 02/12] qemu: Split qemuDomainGetIOThreadsLive

[John Ferlan]

Separate out the fetch of the IOThread monitor call into a separate
helper so that a subsequent domain statistics change can fetch the raw
IOThread data and parse it as it sees fit.

Signed-off-by: John Ferlan <jferlan at redhat.com>
---
 src/qemu/qemu_driver.c | 48 ++++++++++++++++++++++++++----------------
 1 file changed, 30 insertions(+), 18 deletions(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index a52e2495d5..e13633c1e0 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -5486,39 +5486,52 @@ qemuDomainGetMaxVcpus(virDomainPtr dom)
                                          VIR_DOMAIN_VCPU_MAXIMUM));
 }
 
+
 static int
-qemuDomainGetIOThreadsLive(virQEMUDriverPtr driver,
-                           virDomainObjPtr vm,
-                           virDomainIOThreadInfoPtr **info)
+qemuDomainGetIOThreadsMon(virQEMUDriverPtr driver,
+                          virDomainObjPtr vm,
+                          qemuMonitorIOThreadInfoPtr **iothreads)
 {
     qemuDomainObjPrivatePtr priv;
-    qemuMonitorIOThreadInfoPtr *iothreads = NULL;
-    virDomainIOThreadInfoPtr *info_ret = NULL;
     int niothreads = 0;
-    size_t i;
-    int ret = -1;
-
-    if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
-        goto cleanup;
 
     if (!virDomainObjIsActive(vm)) {
         virReportError(VIR_ERR_OPERATION_INVALID, "%s",
                        _("cannot list IOThreads for an inactive domain"));
-        goto endjob;
+        return -1;
     }
 
     priv = vm->privateData;
     if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_OBJECT_IOTHREAD)) {
         virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                        _("IOThreads not supported with this binary"));
-        goto endjob;
+        return -1;
     }
 
     qemuDomainObjEnterMonitor(driver, vm);
-    niothreads = qemuMonitorGetIOThreads(priv->mon, &iothreads);
-    if (qemuDomainObjExitMonitor(driver, vm) < 0)
-        goto endjob;
-    if (niothreads < 0)
+    niothreads = qemuMonitorGetIOThreads(priv->mon, iothreads);
+    if (qemuDomainObjExitMonitor(driver, vm) < 0 || niothreads < 0)
+        return -1;
+
+    return niothreads;
+}
+
+
+static int
+qemuDomainGetIOThreadsLive(virQEMUDriverPtr driver,
+                           virDomainObjPtr vm,
+                           virDomainIOThreadInfoPtr **info)
+{
+    qemuMonitorIOThreadInfoPtr *iothreads = NULL;
+    virDomainIOThreadInfoPtr *info_ret = NULL;
+    int niothreads = 0;
+    size_t i;
+    int ret = -1;
+
+    if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
+        goto cleanup;
+
+    if ((niothreads = qemuDomainGetIOThreadsMon(driver, vm, &iothreads)) < 0)
         goto endjob;
 
     /* Nothing to do */
@@ -5548,8 +5561,7 @@ qemuDomainGetIOThreadsLive(virQEMUDriverPtr driver,
         virBitmapFree(map);
     }
 
-    *info = info_ret;
-    info_ret = NULL;
+    VIR_STEAL_PTR(*info, info_ret);
     ret = niothreads;
 
  endjob:
-- 
2.17.2