Add documentation for supplemental functions.

This includes platform portability stuff like mutexes and threads,
etc.  While here we fixed a problem with nng_opts_parse and we
addressed the type of the platform API.

1 files changed, 48 insertions, 0 deletions

diff --git a/docs/man/nng_msleep.3supp.adoc b/docs/man/nng_msleep.3supp.adoc
new file mode 100644
index 00000000..f3e7f25c
--- /dev/null
+++ b/docs/man/nng_msleep.3supp.adoc
@@ -0,0 +1,48 @@
+= nng_msleep(3supp)
+//
+// Copyright 2018 Staysail Systems, Inc. <info@staysail.tech>
+// Copyright 2018 Capitar IT Group BV <info@capitar.com>
+//
+// This document is supplied under the terms of the MIT License, a
+// copy of which should be located in the distribution where this
+// file was obtained (LICENSE.txt).  A copy of the license may also be
+// found online at https://opensource.org/licenses/MIT.
+//
+
+== NAME
+
+nng_msleep - sleep milliseconds
+
+== SYNOPSIS
+
+[source, c]
+----
+#include <nng/nng.h>
+#include <nng/supplemental/util/platform.h>
+
+void nng_msleep(nng_duration msec);
+----
+
+== DESCRIPTION
+
+The `nng_msleep()` blocks the caller for at least _msec_ milliseconds.
+
+NOTE: This function may block for longer than requested.
+The actual wait time is determined by the capabilities of the
+underlying system.
+
+== RETURN VALUES
+
+None.
+
+== ERRORS
+
+None.
+
+== SEE ALSO
+
+<<nng_sleep_aio.3#,nng_sleep_aio(3)>>,
+<<nng_strerror.3#,nng_strerror(3)>>,
+<<nng_clock.3supp#,nng_clock(3supp)>>,
+<<nng_duration.5#,nng_duration(5)>>,
+<<nng.7#,nng(7)>>