+static char* filename_or_prefix = NULL;
+static int current_file_index = 0;
+static long long current_file_size = 0;
+static long long file_size_limit;
+
+static char*
+filename_for_index (int index)
+{
+ char *filename;
+
+ SGEN_ASSERT (0, file_size_limit > 0, "Indexed binary protocol filename must only be used with file size limit");
+
+ filename = sgen_alloc_internal_dynamic (strlen (filename_or_prefix) + 32, INTERNAL_MEM_BINARY_PROTOCOL, TRUE);
+ sprintf (filename, "%s.%d", filename_or_prefix, index);
+
+ return filename;
+}
+
+static void
+free_filename (char *filename)
+{
+ SGEN_ASSERT (0, file_size_limit > 0, "Indexed binary protocol filename must only be used with file size limit");
+
+ sgen_free_internal_dynamic (filename, strlen (filename_or_prefix) + 32, INTERNAL_MEM_BINARY_PROTOCOL);
+}
+
+static void
+binary_protocol_open_file (void)
+{
+ char *filename;
+
+ if (file_size_limit > 0)
+ filename = filename_for_index (current_file_index);
+ else
+ filename = filename_or_prefix;
+
+ do {
+ binary_protocol_file = open (filename, O_CREAT|O_WRONLY|O_TRUNC, 0644);
+ if (binary_protocol_file == -1 && errno != EINTR)
+ break; /* Failed */
+ } while (binary_protocol_file == -1);
+
+ if (file_size_limit > 0)
+ free_filename (filename);
+}
+#endif
+