Add trace-malloc logfile flushing from an idle handler (r=rayw, a=waterson, not part of build).

widget/src/gtk/nsAppShell.cpp

@@ -318,6 +318,17 @@ NS_IMETHODIMP nsAppShell::Spindown()
   return NS_OK;
 }
 
+#ifdef NS_TRACE_MALLOC
+#include "nsTraceMalloc.h"
+
+static gint
+tm_flush_logfiles(gpointer data)
+{
+  NS_TraceMallocFlushLogfiles();
+  return 1;
+}
+#endif
+
 //-------------------------------------------------------------------------
 //
 // Run
@@ -331,6 +342,10 @@ NS_IMETHODIMP nsAppShell::Run()
   if (!mEventQueue)
     return NS_ERROR_NOT_INITIALIZED;
 
+#ifdef NS_TRACE_MALLOC
+  gtk_idle_add(tm_flush_logfiles, nsnull);
+#endif
+
   // kick up gtk_main.  this won't return until gtk_main_quit is called
   gtk_main();