From f954bb2d93b083ff911a014711b1ea079060faf7 Mon Sep 17 00:00:00 2001
From: Josh Blum
Date: Wed, 20 Mar 2013 23:02:06 -0700
Subject: gras: move chrono implementation into detail

---
 include/gras/detail/chrono.hpp | 74 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 include/gras/detail/chrono.hpp

(limited to 'include/gras/detail')

diff --git a/include/gras/detail/chrono.hpp b/include/gras/detail/chrono.hpp
new file mode 100644
index 0000000..bd247e5
--- /dev/null
+++ b/include/gras/detail/chrono.hpp
@@ -0,0 +1,74 @@
+// Copyright (C) by Josh Blum. See LICENSE.txt for licensing information.
+
+#ifndef INCLUDED_GRAS_DETAIL_CHRONO_HPP
+#define INCLUDED_GRAS_DETAIL_CHRONO_HPP
+
+#if defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
+
+#include <windows.h>
+
+namespace gras
+{
+
+    GRAS_FORCE_INLINE time_ticks_t time_now(void)
+    {
+        LARGE_INTEGER counts;
+        QueryPerformanceCounter(&counts);
+        return counts.QuadPart;
+    }
+
+    GRAS_FORCE_INLINE time_ticks_t time_tps(void)
+    {
+        LARGE_INTEGER freq;
+        QueryPerformanceFrequency(&freq);
+        return freq.QuadPart;
+    }
+
+} //namespace gras
+
+#else
+
+#include <ctime>
+
+namespace gras
+{
+
+    GRAS_FORCE_INLINE time_ticks_t time_now(void)
+    {
+        struct timespec ts;
+        clock_gettime(CLOCK_MONOTONIC, &ts);
+        return ts.tv_sec*1000000000UL + ts.tv_nsec;
+    }
+
+    GRAS_FORCE_INLINE time_ticks_t time_tps(void)
+    {
+        return 1000000000UL;
+    }
+
+} //namespace gras
+
+#endif
+
+namespace gras
+{
+    GRAS_FORCE_INLINE TimerAccumulate::TimerAccumulate(time_ticks_t &accum):
+        accum(accum),
+        start(time_now()),
+        is_done(false)
+    {
+        //NOP
+    }
+
+    GRAS_FORCE_INLINE TimerAccumulate::~TimerAccumulate(void)
+    {
+        if (not is_done) this->done();
+    }
+
+    GRAS_FORCE_INLINE void TimerAccumulate::done(void)
+    {
+        accum += (time_now() - start);
+        is_done = true;
+    }
+}
+
+#endif /*INCLUDED_GRAS_DETAIL_CHRONO_HPP*/
-- 
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