[libvirt] PATCH: Reset global error object at end of test

[Daniel P. Berrange]

There statstest test case is expected to raise a number of libvirt
errors. Since these are now stored in thread locals, it is expected
that this won't be free'd automatically at system shutdown. This 
patch adds a call to virResetError() at the end to release the memory
associated with the stored error object. There is still one block of
memory alocated though, which is the thread local error error object
itself. We can't free this easily, so I just add a valgrind suppression
rule instead. This lets 'make valgrind' pass again

Also since the test case doesn't call virInitialize()as a normal
app would do, we need to explicitly initialize the thread local storage
to ensure things work correctly.

Daniel

diff -r 93337ec227d6 tests/.valgrind.supp
--- a/tests/.valgrind.supp	Mon Jan 26 15:25:53 2009 +0000
+++ b/tests/.valgrind.supp	Tue Jan 27 11:15:47 2009 +0000
@@ -238,3 +238,18 @@
    fun:virtTestRun
    fun:mymain
 }
+{
+   ignoreThreadLocalErrorObject
+   Memcheck:Leak
+   fun:calloc
+   fun:virAlloc
+   fun:virLastErrorObject
+   fun:virRaiseError
+   fun:statsErrorFunc
+   fun:xenLinuxDomainDeviceID
+   fun:testDeviceHelper
+   fun:virtTestRun
+   fun:mymain
+   fun:virtTestMain
+   fun:main
+}
diff -r 93337ec227d6 tests/testutils.c
--- a/tests/testutils.c	Mon Jan 26 15:25:53 2009 +0000
+++ b/tests/testutils.c	Tue Jan 27 11:15:47 2009 +0000
@@ -26,6 +26,8 @@
 #include "internal.h"
 #include "memory.h"
 #include "util.h"
+#include "threads.h"
+#include "virterror_internal.h"
 
 #if TEST_OOM_TRACE
 #include <execinfo.h>
@@ -319,8 +321,8 @@ int virtTestMain(int argc,
                  int (*func)(int, char **))
 {
     char *debugStr;
+    int ret;
 #if TEST_OOM
-    int ret;
     int approxAlloc = 0;
     int n;
     char *oomStr = NULL;
@@ -330,6 +332,10 @@ int virtTestMain(int argc,
     int worker = 0;
 #endif
 
+    if (virThreadInitialize() < 0 ||
+        virErrorInitialize() < 0)
+        return 1;
+
     if ((debugStr = getenv("VIR_TEST_DEBUG")) != NULL) {
         if (virStrToLong_ui(debugStr, NULL, 10, &testDebug) < 0)
             testDebug = 0;
@@ -349,8 +355,10 @@ int virtTestMain(int argc,
     if (getenv("VIR_TEST_MP") != NULL) {
         mp = sysconf(_SC_NPROCESSORS_ONLN);
         fprintf(stderr, "Using %d worker processes\n", mp);
-        if (VIR_ALLOC_N(workers, mp) < 0)
-            return EXIT_FAILURE;
+        if (VIR_ALLOC_N(workers, mp) < 0) {
+            ret = EXIT_FAILURE;
+            goto cleanup;
+        }
     }
 
     if (testOOM)
@@ -359,7 +367,7 @@ int virtTestMain(int argc,
     /* Run once to count allocs, and ensure it passes :-) */
     ret = (func)(argc, argv);
     if (ret != EXIT_SUCCESS)
-        return EXIT_FAILURE;
+        goto cleanup;
 
 #if TEST_OOM_TRACE
     if (testDebug)
@@ -431,9 +439,11 @@ int virtTestMain(int argc,
         else
             fprintf(stderr, " FAILED\n");
     }
+cleanup:
+#else
+    ret = (func)(argc, argv);
+#endif
+
+    virResetLastError();
     return ret;
-
-#else
-    return (func)(argc, argv);
-#endif
 }


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