OpenVDB: CpuTimer.h Source File

OpenVDB 7.1.0

CpuTimer.h
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1 // Copyright Contributors to the OpenVDB Project
2 // SPDX-License-Identifier: MPL-2.0
3
4 #ifndef OPENVDB_UTIL_CPUTIMER_HAS_BEEN_INCLUDED
5 #define OPENVDB_UTIL_CPUTIMER_HAS_BEEN_INCLUDED
6
7 #include <openvdb/version.h>
8 #include <string>
9 #include <tbb/tick_count.h>
10 #include <iostream>// for std::cerr
11 #include <sstream>// for ostringstream
12 #include <iomanip>// for setprecision
13 #include "Formats.h"// for printTime
14
15 namespace openvdb {
16 OPENVDB_USE_VERSION_NAMESPACE
17 namespace OPENVDB_VERSION_NAME {
18 namespace util {
19
66 class CpuTimer
67 {
68 public:
69
71 CpuTimer(std::ostream& os = std::cerr) : mOutStream(os), mT0(tbb::tick_count::now()) {}
72
76 CpuTimer(const std::string& msg, std::ostream& os = std::cerr) : mOutStream(os), mT0() { this->start(msg); }
77
81 inline void start() { mT0 = tbb::tick_count::now(); }
82
86 inline void start(const std::string& msg)
87 {
88 mOutStream << msg << " ...";
89 this->start();
90 }
91
95 inline double milliseconds() const
96 {
97 tbb::tick_count::interval_t dt = tbb::tick_count::now() - mT0;
98 return 1000.0*dt.seconds();
99 }
100
104 inline double seconds() const
105 {
106 tbb::tick_count::interval_t dt = tbb::tick_count::now() - mT0;
107 return dt.seconds();
108 }
109
111 OPENVDB_DEPRECATED inline double delta() const { return this->milliseconds(); }
112
113 inline std::string time() const
114 {
115 const double msec = this->milliseconds();
116 std::ostringstream os;
117 printTime(os, msec, "", "", 4, 1, 1);
118 return os.str();
119 }
120
124 inline double stop() const
125 {
126 const double msec = this->milliseconds();
127 printTime(mOutStream, msec, " completed in ", "\n", 4, 3, 1);
128 return msec;
129 }
130
134 inline double stop(const std::string& msg) const
135 {
136 const double msec = this->milliseconds();
137 mOutStream << msg << " ...";
138 printTime(mOutStream, msec, " completed in ", "\n", 4, 3, 1);
139 return msec;
140 }
141
146 inline double restart()
147 {
148 const double msec = this->milliseconds();
149 this->start();
150 return msec;
151 }
152
157 inline double restart(const std::string& msg)
158 {
159 const double delta = this->stop();
160 this->start(msg);
161 return delta;
162 }
163
164 private:
165 std::ostream& mOutStream;
166 tbb::tick_count mT0;
167 };// CpuTimer
168
169 } // namespace util
170 } // namespace OPENVDB_VERSION_NAME
171 } // namespace openvdb
172
173
174 #endif // OPENVDB_UTIL_CPUTIMER_HAS_BEEN_INCLUDED
openvdb::v7_1::util::CpuTimer::start
void start(const std::string &msg)
Print message and start timer.
Definition: CpuTimer.h:86
openvdb::v7_1::util::CpuTimer::stop
double stop(const std::string &msg) const
Returns and prints time in milliseconds since construction or start was called.
Definition: CpuTimer.h:134
tbb
Definition: Coord.h:16
openvdb::v7_1::util::printTime
OPENVDB_API int printTime(std::ostream &os, double milliseconds, const std::string &head="", const std::string &tail="\n", int width=4, int precision=1, int verbose=0)
version.h
Library and file format version numbers.
openvdb::v7_1::util::CpuTimer::start
void start()
Start timer.
Definition: CpuTimer.h:81
openvdb::v7_1::util::CpuTimer::time
std::string time() const
Definition: CpuTimer.h:113
openvdb::v7_1::util::CpuTimer::milliseconds
double milliseconds() const
Return Time difference in milliseconds since construction or start was called.
Definition: CpuTimer.h:95
openvdb::v7_1::util::CpuTimer::delta
OPENVDB_DEPRECATED double delta() const
This method is identical to milliseconds() - deprecated.
Definition: CpuTimer.h:111
Formats.h
Utility routines to output nicely-formatted numeric values.
openvdb::v7_1::util::CpuTimer::stop
double stop() const
Returns and prints time in milliseconds since construction or start was called.
Definition: CpuTimer.h:124
OPENVDB_DEPRECATED
#define OPENVDB_DEPRECATED
Definition: Platform.h:42
openvdb::v7_1::util::CpuTimer::seconds
double seconds() const
Return Time difference in seconds since construction or start was called.
Definition: CpuTimer.h:104
openvdb::v7_1::util::CpuTimer::restart
double restart(const std::string &msg)
Stop previous timer, print message and re-start timer.
Definition: CpuTimer.h:157
OPENVDB_USE_VERSION_NAMESPACE
#define OPENVDB_USE_VERSION_NAMESPACE
Definition: version.h:146
openvdb::v7_1::util::CpuTimer::CpuTimer
CpuTimer(const std::string &msg, std::ostream &os=std::cerr)
Prints message and start timer.
Definition: CpuTimer.h:76
openvdb::v7_1::util::CpuTimer::CpuTimer
CpuTimer(std::ostream &os=std::cerr)
Initiate timer.
Definition: CpuTimer.h:71
OPENVDB_VERSION_NAME
#define OPENVDB_VERSION_NAME
The version namespace name for this library version.
Definition: version.h:94
openvdb::v7_1::util::CpuTimer
Simple timer for basic profiling.
Definition: CpuTimer.h:67
openvdb::v7_1::util::CpuTimer::restart
double restart()
Re-start timer.
Definition: CpuTimer.h:146
openvdb
Definition: Exceptions.h:13