Make DocFileName::mangledFileName() threadsafe

diff --git a/src/support/FileName.cpp b/src/support/FileName.cpp
index f0489309d549ae44a61df42c888225eb23eadfe5..a063bdc122fffbddef89050c4bbdfbc57188f04c 100644 (file)
--- a/src/support/FileName.cpp
+++ b/src/support/FileName.cpp
@@ -17,6 +17,7 @@
 #include "support/filetools.h"
 #include "support/lassert.h"
 #include "support/lstrings.h"
+#include "support/mutex.h"
 #include "support/qstring_helpers.h"
 #include "support/os.h"
 #include "support/Package.h"
@@ -929,6 +930,9 @@ string DocFileName::mangledFileName(string const & dir) const
        // filename returns the same mangled name.
        typedef map<string, string> MangledMap;
        static MangledMap mangledNames;
+       static Mutex mangledMutex;
+       // this locks both access to mangledNames and counter below 
+       Mutex::Locker lock(&mangledMutex);
        MangledMap::const_iterator const it = mangledNames.find(absFileName());
        if (it != mangledNames.end())
                return (*it).second;