1 files changed, 47 insertions, 0 deletions
diff --git a/src/nxt_random.h b/src/nxt_random.h
new file mode 100644
index 00000000..bfc4e3b3
--- /dev/null
+++ b/src/nxt_random.h
@@ -0,0 +1,47 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) NGINX, Inc.
+ */
+
+#ifndef _NXT_RANDOM_H_INCLUDED_
+#define _NXT_RANDOM_H_INCLUDED_
+
+
+#if (NXT_HAVE_ARC4RANDOM)
+
+/*
+ * arc4random() has been introduced in OpenBSD 2.1 and then was ported
+ * to FreeBSD 2.2.6, NetBSD 2.0, MacOSX and SmartOS.
+ *
+ * arc4random() automatically initializes itself in the first call and
+ * then reinitializes itself in the first call in every forked processes.
+ */
+
+typedef void  *nxt_random_t;
+
+
+#define nxt_random_init(r)
+#define nxt_random(r)       arc4random()
+
+#else
+
+typedef struct {
+    uint8_t  i;
+    uint8_t  j;
+    uint8_t  s[256];
+    int32_t  count;
+} nxt_random_t;
+
+
+void nxt_random_init(nxt_random_t *r);
+uint32_t nxt_random(nxt_random_t *r);
+
+#if (NXT_LIB_UNIT_TEST)
+nxt_int_t nxt_random_unit_test(nxt_thread_t *thr);
+#endif
+
+#endif
+
+
+#endif /* _NXT_RANDOM_H_INCLUDED_ */