From 9976c207cdb20871880bd2f4cf123cf4cb6a8b0f Mon Sep 17 00:00:00 2001
From: Stephan Broyles <sbroyles@us.ibm.com>
Date: Wed, 5 Nov 2014 19:09:37 -0600
Subject: Added remaining occ files.

Change-Id: I91a748d3dcf3161a6a3eedcb376fcaf1e4dfe655
---
 src/lib/time.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100755 src/lib/time.c

(limited to 'src/lib/time.c')

diff --git a/src/lib/time.c b/src/lib/time.c
new file mode 100755
index 0000000..bc1f2e7
--- /dev/null
+++ b/src/lib/time.c
@@ -0,0 +1,58 @@
+// $Id: time.c,v 1.1.1.1 2013/12/11 20:49:20 bcbrock Exp $
+// $Source: /afs/awd/projects/eclipz/KnowledgeBase/.cvsroot/eclipz/chips/p8/working/procedures/lib/time.c,v $
+//-----------------------------------------------------------------------------
+// *! (C) Copyright International Business Machines Corp. 2013
+// *! All Rights Reserved -- Property of IBM
+// *! *** IBM Confidential ***
+//-----------------------------------------------------------------------------
+
+/// \file time.c
+/// \brief Implementation of functions from <time.h>
+///
+/// The following standard APIs are currently supported:
+///
+/// - clock_gettime() with the single clock id CLOCK_REALTIME
+///
+/// Since SSX does not currently have any per-thread CPU time statistics, we
+/// can not implement process-CPU-time-based APIs like the simple clock() or
+/// clock_gettime() with CLOCK_REALTIME.
+
+#include "ssx.h"
+#include <errno.h>
+#include <time.h>
+
+/// Get time from a timer
+///
+/// \param clock_id This must be the constant CLOCK_REALTIME defined in
+/// <time.h>. 
+///
+/// \param tp A pointer to a struct timespec populated by this API.
+///
+/// Although the Posix standard requires that clock_gettime() support
+/// CLOCK_REALTIME, CLOCK_REALTIME measures standard Unix time (seconds since
+/// the epoch) which is not available to SSX.  SSX currently only supports
+/// CLOCK_MONOTONIC, which is derived from the SSX timebase.
+///
+/// \returns Either 0 for success, or -EINVAL in the event of an invalid
+/// argument (unrecognized \a clock_id, NULL \a tp pointer).
+
+int
+clock_gettime(clockid_t clock_id, struct timespec* tp)
+{
+    int rc;
+    SsxTimebase now;
+
+    if ((clock_id != CLOCK_MONOTONIC) || (tp == 0)) {
+        rc = -EINVAL;
+    } else {
+
+        now = ssx_timebase_get();
+        tp->tv_sec = now / SSX_TIMEBASE_FREQUENCY_HZ;
+        tp->tv_nsec = 
+            ((now % SSX_TIMEBASE_FREQUENCY_HZ) * 1000000000) / 
+            SSX_TIMEBASE_FREQUENCY_HZ;
+        rc = 0;
+    }
+
+    return rc;
+}
-- 
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