From 1d85e914a6b7a9b3550e84d2006ba775a27a0a44 Mon Sep 17 00:00:00 2001
From: Andreas Hansson <andreas.hansson@arm.com>
Date: Fri, 24 Jan 2014 15:29:30 -0600
Subject: sim: Expose the current clock period as a stat

This patch adds observability to the clock period of the clock domains
by including it as a stat.

As a result of adding this, the regressions will be updated in a
separate patch.
---
 src/sim/clock_domain.cc | 14 ++++++++++++++
 src/sim/clock_domain.hh |  9 +++++++++
 2 files changed, 23 insertions(+)

(limited to 'src/sim')

diff --git a/src/sim/clock_domain.cc b/src/sim/clock_domain.cc
index ff96f2808..0d1836e83 100644
--- a/src/sim/clock_domain.cc
+++ b/src/sim/clock_domain.cc
@@ -49,6 +49,20 @@
 #include "sim/voltage_domain.hh"
 #include "sim/clocked_object.hh"
 
+void
+ClockDomain::regStats()
+{
+    using namespace Stats;
+
+    // Expose the current clock period as a stat for observability in
+    // the dumps
+    currentClock
+        .scalar(_clockPeriod)
+        .name(params()->name + ".clock")
+        .desc("Clock period in ticks")
+        ;
+}
+
 double
 ClockDomain::voltage() const
 {
diff --git a/src/sim/clock_domain.hh b/src/sim/clock_domain.hh
index e6b7273c1..b597b6611 100644
--- a/src/sim/clock_domain.hh
+++ b/src/sim/clock_domain.hh
@@ -72,6 +72,13 @@ class ClockedObject;
 class ClockDomain : public SimObject
 {
 
+  private:
+
+    /**
+     * Stat to report clock period of clock domain
+     */
+    Stats::Value currentClock;
+
   protected:
 
     /**
@@ -105,6 +112,8 @@ class ClockDomain : public SimObject
         _clockPeriod(0),
         _voltageDomain(voltage_domain) {}
 
+    void regStats();
+
     /**
      * Get the clock period.
      *
-- 
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