From 483eb2f56657e8e7f419ab1a4fab8dce9ade8609 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 27 Apr 2024 20:24:20 +0200
Subject: Adding upstream version 14.2.21.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/boost/libs/compute/perf/perf.hpp | 109 +++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 src/boost/libs/compute/perf/perf.hpp

(limited to 'src/boost/libs/compute/perf/perf.hpp')

diff --git a/src/boost/libs/compute/perf/perf.hpp b/src/boost/libs/compute/perf/perf.hpp
new file mode 100644
index 00000000..cce0328c
--- /dev/null
+++ b/src/boost/libs/compute/perf/perf.hpp
@@ -0,0 +1,109 @@
+//---------------------------------------------------------------------------//
+// Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com>
+//
+// Distributed under the Boost Software License, Version 1.0
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+//
+// See http://boostorg.github.com/compute for more information.
+//---------------------------------------------------------------------------//
+
+#ifndef PERF_HPP
+#define PERF_HPP
+
+// this header contains general purpose functions and variables used by
+// the boost.compute performance benchmarks.
+
+#include <vector>
+#include <cstdlib>
+#include <algorithm>
+
+#include <boost/lexical_cast.hpp>
+#include <boost/timer/timer.hpp>
+
+static size_t PERF_N = 1024;
+static size_t PERF_TRIALS = 3;
+
+// parses command line arguments and sets the corresponding perf variables
+inline void perf_parse_args(int argc, char *argv[])
+{
+    if(argc >= 2){
+        PERF_N = boost::lexical_cast<size_t>(argv[1]);
+    }
+
+    if(argc >= 3){
+        PERF_TRIALS = boost::lexical_cast<size_t>(argv[2]);
+    }
+}
+
+// generates a vector of random numbers
+template<class T>
+std::vector<T> generate_random_vector(const size_t size)
+{
+    std::vector<T> vector(size);
+    std::generate(vector.begin(), vector.end(), rand);
+    return vector;
+}
+
+// a simple timer wrapper which records multiple time entries
+class perf_timer
+{
+public:
+    typedef boost::timer::nanosecond_type nanosecond_type;
+
+    perf_timer()
+    {
+        timer.stop();
+    }
+
+    void start()
+    {
+        timer.start();
+    }
+
+    void stop()
+    {
+        timer.stop();
+        times.push_back(timer.elapsed().wall);
+    }
+
+    size_t trials() const
+    {
+        return times.size();
+    }
+
+    void clear()
+    {
+        times.clear();
+    }
+
+    nanosecond_type last_time() const
+    {
+        return times.back();
+    }
+
+    nanosecond_type min_time() const
+    {
+        return *std::min_element(times.begin(), times.end());
+    }
+
+    nanosecond_type max_time() const
+    {
+        return *std::max_element(times.begin(), times.end());
+    }
+
+    boost::timer::cpu_timer timer;
+    std::vector<boost::timer::nanosecond_type> times;
+};
+
+// returns the rate (in MB/s) for processing 'count' items of type 'T'
+// in 'time' nanoseconds
+template<class T>
+double perf_rate(const size_t count, perf_timer::nanosecond_type time)
+{
+    const size_t byte_count = count * sizeof(T);
+
+    return (double(byte_count) / 1024 / 1024) / (time / 1e9);
+}
+
+#endif // PERF_HPP
-- 
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