From 198c992d261ca74ac654351b53f688144bf9b168 Mon Sep 17 00:00:00 2001
From: "Daniel P. Berrange" <berrange@redhat.com>
Date: Mon, 7 Jan 2013 16:19:36 +0000
Subject: [PATCH] Speed up fallback to legacy non-QMP probing

Since we daemonized QEMU for capabilities probing there is a long
time if QEMU fails to launch. This is because we're not passing in
any virDomainObjPtr instance and thus the monitor code can not
check to see if the PID is still alive.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
---
 src/qemu/qemu_capabilities.c | 34 ++++++++++++++++++++--------------
 1 file changed, 20 insertions(+), 14 deletions(-)

diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index e16bc70761..bcecc6d04c 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -2307,6 +2307,8 @@ qemuCapsInitQMP(qemuCapsPtr caps,
     char *pidfile = NULL;
     qemuCapsHookData hookData;
     char *archstr;
+    pid_t pid = 0;
+    virDomainObj vm;
 
     /* the ".sock" sufix is important to avoid a possible clash with a qemu
      * domain called "capabilities"
@@ -2360,7 +2362,16 @@ qemuCapsInitQMP(qemuCapsPtr caps,
         goto cleanup;
     }
 
-    if (!(mon = qemuMonitorOpen(NULL, &config, true, &callbacks))) {
+    if (virPidFileReadPath(pidfile, &pid) < 0) {
+        VIR_DEBUG("Failed to read pidfile %s", pidfile);
+        ret = 0;
+        goto cleanup;
+    }
+
+    memset(&vm, 0, sizeof(vm));
+    vm.pid = pid;
+
+    if (!(mon = qemuMonitorOpen(&vm, &config, true, &callbacks))) {
         ret = 0;
         goto cleanup;
     }
@@ -2446,21 +2457,16 @@ cleanup:
     VIR_FREE(monpath);
     VIR_FREE(package);
 
-    if (pidfile) {
+    if (pid != 0) {
         char ebuf[1024];
-        pid_t pid;
-        int rc;
 
-        if ((rc = virPidFileReadPath(pidfile, &pid)) < 0) {
-            VIR_DEBUG("Failed to read pidfile %s: %s",
-                      pidfile, virStrerror(-rc, ebuf, sizeof(ebuf)));
-        } else {
-            VIR_DEBUG("Killing QMP caps process %lld", (long long) pid);
-            if (virProcessKill(pid, SIGKILL) < 0 && errno != ESRCH)
-                VIR_ERROR(_("Failed to kill process %lld: %s"),
-                          (long long) pid,
-                          virStrerror(errno, ebuf, sizeof(ebuf)));
-        }
+        VIR_DEBUG("Killing QMP caps process %lld", (long long) pid);
+        if (virProcessKill(pid, SIGKILL) < 0 && errno != ESRCH)
+            VIR_ERROR(_("Failed to kill process %lld: %s"),
+                      (long long) pid,
+                      virStrerror(errno, ebuf, sizeof(ebuf)));
+    }
+    if (pidfile) {
         unlink(pidfile);
         VIR_FREE(pidfile);
     }
-- 
2.47.2