xmlMemUsed is not thread-safe

For https://bugzilla.gnome.org/show_bug.cgi?id=747437
just use the mutex to protect access to those variables

1 files changed, 12 insertions, 2 deletions

diff --git a/xmlmemory.c b/xmlmemory.c
index a3dc737f..f24fd6d4 100644
--- a/xmlmemory.c
+++ b/xmlmemory.c
@@ -554,7 +554,12 @@ xmlMemoryStrdup(const char *str) {
 
 int
 xmlMemUsed(void) {
-     return(debugMemSize);
+    int res;
+
+    xmlMutexLock(xmlMemMutex);
+    res = debugMemSize;
+    xmlMutexUnlock(xmlMemMutex);
+    return(res);
 }
 
 /**
@@ -567,7 +572,12 @@ xmlMemUsed(void) {
 
 int
 xmlMemBlocks(void) {
-     return(debugMemBlocks);
+    int res;
+
+    xmlMutexLock(xmlMemMutex);
+    res = debugMemBlocks;
+    xmlMutexUnlock(xmlMemMutex);
+    return(res);
 }
 
 #ifdef MEM_LIST