Use an atomic exchange to get the old global context when setting a new one

2011-09-02 02:32:35 -07:00
parent 3a2fa18744
commit 3dfd67680c
1 changed files with 3 additions and 2 deletions
@@ -2231,9 +2231,10 @@ ALC_API ALCboolean ALC_APIENTRY alcMakeContextCurrent(ALCcontext *context)
    // context must be a valid Context or NULL
    if(context == NULL || IsContext(context))
    {
-        ALCcontext *old = GlobalContext;
+        ALCcontext *old;
+
        if(context) ALCcontext_IncRef(context);
-        GlobalContext = context;
+        old = ExchangePtr((void**)&GlobalContext, context);
        if(old) ALCcontext_DecRef(old);

        if((old=pthread_getspecific(LocalContext)) != NULL)