+/* "128 bits of thread-id ought to be enough for anybody" */
+#define NOTMUCH_THREAD_ID_BITS 128
+#define NOTMUCH_THREAD_ID_DIGITS (NOTMUCH_THREAD_ID_BITS / 4)
+typedef struct _thread_id {
+ char str[NOTMUCH_THREAD_ID_DIGITS + 1];
+} thread_id_t;
+
+static void
+thread_id_generate (thread_id_t *thread_id)
+{
+ FILE *urandom;
+ uint32_t value;
+ char *s;
+ int i;
+
+ urandom = fopen ("/dev/urandom", "r");
+ if (urandom == NULL) {
+ fprintf (stderr, "Error opening /dev/urandom: %s\n",
+ strerror (errno));
+ fprintf (stderr, "Perhaps notmuch needs some portability fixes for your platform?\n");
+ exit (1);
+ }
+
+ s = thread_id->str;
+ for (i = 0; i < NOTMUCH_THREAD_ID_DIGITS; i += 8) {
+ fread ((void *) &value, sizeof (value), 1, urandom);
+ sprintf (s, "%08x", value);
+ s += 8;
+ }
+
+ fclose (urandom);
+
+ printf ("Generated thread id: %s\n", thread_id->str);
+}