Point Cloud Library (PCL) 1.15.0
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time_gpu.h
1/*
2 * Software License Agreement (BSD License)
3 *
4 * Copyright (c) 2010, Willow Garage, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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10 *
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12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 * * Neither the name of Willow Garage, Inc. nor the names of its
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19 * from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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33 *
34 * $Id$
35 *
36 */
37
38#pragma once
39
40#include <cuda.h>
41#include <pcl/cuda/cutil_inline.h>
42
43namespace pcl
44{
45 namespace cuda
46 {
47 /**
48 * \brief Class to measure the time spent in a scope
49 *
50 * To use this class, e.g. to measure the time spent in a function,
51 * just create an instance at the beginning of the function.
52 */
54 {
55 public:
56 /** \brief Constructor. */
57 inline ScopeTimeGPU (const char* title) : title_ (title)
58 {
59 start ();
60 }
61
62 /** \brief Destructor. */
63 inline ~ScopeTimeGPU ()
64 {
65 stop ();
66 std::cerr << title_ << " took " << elapsed_time_ << "ms.\n";
67 }
68
69 /** \brief Start the timer. */
70 inline void
72 {
73 CUT_CHECK_ERROR ("dude");
74 cutilSafeCall (cudaEventCreate (&start_));
75 cutilSafeCall (cudaEventCreate (&end_));
76
77 cutilSafeCall (cudaEventRecord (start_, 0));
78 }
79
80 /** \brief Stop the timer. */
81 inline void
83 {
84 CUT_CHECK_ERROR ("dude");
85 // Measure time needed to copy data
86 cutilSafeCall (cudaDeviceSynchronize ());
87 cutilSafeCall (cudaEventRecord (end_, 0));
88 cutilSafeCall (cudaEventSynchronize (end_));
89 cutilSafeCall (cudaEventElapsedTime (&elapsed_time_, start_, end_));
90
91 cutilSafeCall (cudaEventDestroy (end_));
92 cutilSafeCall (cudaEventDestroy (start_));
93 }
94
95 /** \brief Stop and print the timer. */
96 inline void stop_print ()
97 {
98 stop ();
99 std::cerr << title_ << " took " << elapsed_time_ << "ms.\n";
100 }
101
102
103 private:
104 cudaEvent_t start_;
105 cudaEvent_t end_;
106
107 float elapsed_time_;
108
109 std::string title_;
110 };
111 } // namespace
112} // namespace
Class to measure the time spent in a scope.
Definition time_gpu.h:54
void start()
Start the timer.
Definition time_gpu.h:71
ScopeTimeGPU(const char *title)
Constructor.
Definition time_gpu.h:57
~ScopeTimeGPU()
Destructor.
Definition time_gpu.h:63
void stop()
Stop the timer.
Definition time_gpu.h:82
void stop_print()
Stop and print the timer.
Definition time_gpu.h:96