/usr/include/d2/4.6/std/perf.d is in libphobos2-4.6-dev 0.29.1-4.6.3-1ubuntu1.
This file is owned by root:root, with mode 0o644.
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/* /////////////////////////////////////////////////////////////////////////////
* File: perf.d
*
* Created 19th March 2004
* Updated: 18th July 2004
*
* www: http://www.digitalmars.com/
*
* Copyright (C) 2004 by Digital Mars
* All Rights Reserved
* Written by Matthew Wilson
* http://www.digitalmars.com
* License for redistribution is by either the Artistic License in artistic.txt,
* or the LGPL
*
* ////////////////////////////////////////////////////////////////////////// */
/**
* Platform-independent performance measurement and timing classes.
*
* $(D_PARAM PerformanceCounter) is the main platform-independent timer class provided,
* covering the most typical use case, measuring elapsed wall-clock time.
*
* The module also provides several Windows-specific timers that can
* be useful in specialized situations.
*
* Synopsis:
----
alias PerformanceCounter.interval_t interval_t;
auto timer = new PerformanceCounter;
timer.start();
// do computation
timer.stop();
interval_t elapsedMsec = timer.milliseconds;
writefln("Time elapsed: %s msec", elapsedMsec);
----
* In particular note that $(D_PARAM stop()) must be called
* before querying the elapsed time.
*
* These classes were ported to D from the
* $(LINK2 http://stlsoft.org/,STLSoft C++ libraries),
* which were documented in the article
* "$(LINK2 http://www.windevnet.com/documents/win0305a/,
* Win32 Performance Measurement Options)",
* May 2003 issue of Windows Develper Network.
*
* Author:
* Matthew Wilson
*
* Source: $(PHOBOSSRC std/_perf.d)
*
* Macros:
* WIKI=Phobos/StdPerf
*/
module std.perf;
pragma(msg, "std.perf has been scheduled for deprecation. "
"Please use std.datetime instead.");
version(Windows)
{
private import std.c.windows.windows;
/* ////////////////////////////////////////////////////////////////////////// */
// This library provides performance measurement facilities
/* ////////////////////////////////////////////////////////////////////////// */
/** A performance counter that uses the most accurate measurement APIs available on the host machine
On Linux, the implementation uses $(D_PARAM gettimeofday()).
For Windows, $(D_PARAM QueryPerformanceCounter()) is used if available,
$(D_PARAM GetTickCount()) otherwise.
*/
class PerformanceCounter
{
private:
alias long epoch_type;
public:
/// The type of the interval measurement (generally a 64-bit signed integer)
alias long interval_t;
deprecated alias interval_t interval_type;
private:
/** Class constructor
*/
shared static this()
{
// Detects availability of the high performance hardware counter, and if
// not available adjusts
interval_t freq;
if (QueryPerformanceFrequency(&freq))
{
sm_freq = freq;
sm_fn = &_qpc;
}
else
{
sm_freq = 1000;
sm_fn = &_qtc;
}
}
public:
/** Starts measurement
Begins a measurement period
*/
void start()
{
sm_fn(m_start);
}
/** Ends measurement
Marks the end of a measurement period.
This must be called before querying the elapsed time with
$(D_PARAM period_count), $(D_PARAM seconds),
$(D_PARAM milliseconds), or $(D_PARAM microseconds).
The $(D_PARAM stop()) method may be called multiple times without an intervening $(D_PARAM start()).
Elapsed time is always measured from most recent $(D_PARAM start()) to the most recent
$(D_PARAM stop()).
*/
void stop()
{
sm_fn(m_end);
}
public:
/** The elapsed count in the measurement period
This represents the extent, in machine-specific increments, of the measurement period
*/
interval_t periodCount() const
{
return m_end - m_start;
}
/** The number of whole seconds in the measurement period
This represents the extent, in whole seconds, of the measurement period
*/
interval_t seconds() const
{
return periodCount() / sm_freq;
}
/** The number of whole milliseconds in the measurement period
This represents the extent, in whole milliseconds, of the measurement period
*/
interval_t milliseconds() const
{
interval_t result;
interval_t count = periodCount();
if(count < 0x20C49BA5E353F7L)
{
result = (count * 1000) / sm_freq;
}
else
{
result = (count / sm_freq) * 1000;
}
return result;
}
/** The number of whole microseconds in the measurement period
This represents the extent, in whole microseconds, of the measurement period
*/
interval_t microseconds() const
{
interval_t result;
interval_t count = periodCount();
if(count < 0x8637BD05AF6L)
{
result = (count * 1000000) / sm_freq;
}
else
{
result = (count / sm_freq) * 1000000;
}
return result;
}
private:
alias void function(out epoch_type interval) measure_func;
static void _qpc(out epoch_type interval)
{
QueryPerformanceCounter(&interval);
}
static void _qtc(out epoch_type interval)
{
interval = GetTickCount();
}
private:
epoch_type m_start; // start of measurement period
epoch_type m_end; // End of measurement period
__gshared const interval_t sm_freq; // Frequency
__gshared const measure_func sm_fn; // Measurement function
}
unittest
{
alias PerformanceCounter counter_type;
counter_type counter = new counter_type();
counter.start();
for(int i = 0; i < 10000000; ++i)
{ }
counter.stop();
counter_type.interval_t us1 = counter.microseconds();
counter_type.interval_t ms1 = counter.milliseconds();
counter_type.interval_t s1 = counter.seconds();
for(int i = 0; i < 10000000; ++i)
{ }
counter.stop();
counter_type.interval_t us2 = counter.microseconds();
counter_type.interval_t ms2 = counter.milliseconds();
counter_type.interval_t s2 = counter.seconds();
assert(us2 >= us1);
assert(ms2 >= ms1);
assert(s2 >= s1);
}
/* ////////////////////////////////////////////////////////////////////////// */
/** A low-cost, low-resolution performance counter
This class provides low-resolution, but low-latency, performance monitoring.
This class is available only on Windows, but
is guaranteed to be meaningful on all Windows operating systems.
*/
class TickCounter
{
private:
alias long epoch_type;
public:
/** The interval type
The type of the interval measurement (generally a 64-bit signed integer)
*/
alias long interval_t;
deprecated alias interval_t interval_type;
public:
public:
/** Starts measurement
Begins a measurement period
*/
void start()
{
m_start = GetTickCount();
}
/** Ends measurement
Marks the end of a measurement period.
This must be called before querying the elapsed time with
$(D_PARAM period_count), $(D_PARAM seconds),
$(D_PARAM milliseconds), or $(D_PARAM microseconds).
The $(D_PARAM stop()) method may be called multiple times without an intervening $(D_PARAM start()).
Elapsed time is always measured from most recent $(D_PARAM start()) to the most recent
$(D_PARAM stop()).
*/
void stop()
{
m_end = GetTickCount();
}
public:
/**
The elapsed count in the measurement period
This represents the extent, in machine-specific increments, of the measurement period
*/
interval_t periodCount() const
{
return m_end - m_start;
}
/** The number of whole seconds in the measurement period
This represents the extent, in whole seconds, of the measurement period
*/
interval_t seconds() const
{
return periodCount() / 1000;
}
/** The number of whole milliseconds in the measurement period
This represents the extent, in whole milliseconds, of the measurement period
*/
interval_t milliseconds() const
{
return periodCount();
}
/** The number of whole microseconds in the measurement period
This represents the extent, in whole microseconds, of the measurement period
*/
interval_t microseconds() const
{
return periodCount() * 1000;
}
private:
uint m_start; // start of measurement period
uint m_end; // End of measurement period
}
unittest
{
alias TickCounter counter_type;
counter_type counter = new counter_type();
counter.start();
for(int i = 0; i < 10000000; ++i)
{ }
counter.stop();
counter_type.interval_t us1 = counter.microseconds();
counter_type.interval_t ms1 = counter.milliseconds();
counter_type.interval_t s1 = counter.seconds();
for(int i = 0; i < 10000000; ++i)
{ }
counter.stop();
counter_type.interval_t us2 = counter.microseconds();
counter_type.interval_t ms2 = counter.milliseconds();
counter_type.interval_t s2 = counter.seconds();
assert(us2 >= us1);
assert(ms2 >= ms1);
assert(s2 >= s1);
}
/* ////////////////////////////////////////////////////////////////////////// */
/** A performance counter that provides thread-specific performance timings
This class uses the operating system's performance monitoring facilities to provide timing
information pertaining to the calling thread only, irrespective of the activities of other
threads on the system. This class does not provide meaningful timing information on operating
systems that do not provide thread-specific monitoring.
This class is available only on Windows.
*/
class ThreadTimesCounter
{
private:
alias long epoch_type;
public:
/** The interval type
The type of the interval measurement (generally a 64-bit signed integer)
*/
alias long interval_t;
deprecated alias interval_t interval_type;
public:
/** Constructor
Creates an instance of the class, and caches the thread token so that measurements will
be taken with respect to the thread in which the class was created.
*/
this()
{
m_thread = GetCurrentThread();
}
public:
/** Starts measurement
Begins a measurement period
*/
void start()
{
FILETIME creationTime;
FILETIME exitTime;
GetThreadTimes(m_thread, &creationTime, &exitTime, cast(FILETIME*)&m_kernelStart, cast(FILETIME*)&m_userStart);
}
/** Ends measurement
Marks the end of a measurement period.
This must be called before querying the elapsed time with
$(D_PARAM period_count), $(D_PARAM seconds),
$(D_PARAM milliseconds), or $(D_PARAM microseconds).
The $(D_PARAM stop()) method may be called multiple times without an intervening $(D_PARAM start()).
Elapsed time is always measured from most recent $(D_PARAM start()) to the most recent
$(D_PARAM stop()).
*/
void stop()
{
FILETIME creationTime;
FILETIME exitTime;
GetThreadTimes(m_thread, &creationTime, &exitTime, cast(FILETIME*)&m_kernelEnd, cast(FILETIME*)&m_userEnd);
}
public:
/** The elapsed count in the measurement period for kernel mode activity
This represents the extent, in machine-specific increments, of the measurement period for kernel mode activity
*/
interval_t kernelPeriodCount() const
{
return m_kernelEnd - m_kernelStart;
}
/** The number of whole seconds in the measurement period for kernel mode activity
This represents the extent, in whole seconds, of the measurement period for kernel mode activity
*/
interval_t kernelSeconds() const
{
return kernelPeriodCount() / 10000000;
}
/** The number of whole milliseconds in the measurement period for kernel mode activity
This represents the extent, in whole milliseconds, of the measurement period for kernel mode activity
*/
interval_t kernelMilliseconds() const
{
return kernelPeriodCount() / 10000;
}
/** The number of whole microseconds in the measurement period for kernel mode activity
This represents the extent, in whole microseconds, of the measurement period for kernel mode activity
*/
interval_t kernelMicroseconds() const
{
return kernelPeriodCount() / 10;
}
/** The elapsed count in the measurement period for user mode activity
This represents the extent, in machine-specific increments, of the measurement period for user mode activity
*/
interval_t userPeriodCount() const
{
return m_userEnd - m_userStart;
}
/** The number of whole seconds in the measurement period for user mode activity
This represents the extent, in whole seconds, of the measurement period for user mode activity
*/
interval_t userSeconds() const
{
return userPeriodCount() / 10000000;
}
/** The number of whole milliseconds in the measurement period for user mode activity
This represents the extent, in whole milliseconds, of the measurement period for user mode activity
*/
interval_t userMilliseconds() const
{
return userPeriodCount() / 10000;
}
/** The number of whole microseconds in the measurement period for user mode activity
This represents the extent, in whole microseconds, of the measurement period for user mode activity
*/
interval_t userMicroseconds() const
{
return userPeriodCount() / 10;
}
/** The elapsed count in the measurement period
This represents the extent, in machine-specific increments, of the measurement period
*/
interval_t periodCount() const
{
return kernelPeriodCount() + userPeriodCount();
}
/** The number of whole seconds in the measurement period
This represents the extent, in whole seconds, of the measurement period
*/
interval_t seconds() const
{
return periodCount() / 10000000;
}
/** The number of whole milliseconds in the measurement period
This represents the extent, in whole milliseconds, of the measurement period
*/
interval_t milliseconds() const
{
return periodCount() / 10000;
}
/** The number of whole microseconds in the measurement period
This represents the extent, in whole microseconds, of the measurement period
*/
interval_t microseconds() const
{
return periodCount() / 10;
}
private:
epoch_type m_kernelStart;
epoch_type m_kernelEnd;
epoch_type m_userStart;
epoch_type m_userEnd;
HANDLE m_thread;
}
unittest
{
alias ThreadTimesCounter counter_type;
counter_type counter = new counter_type();
counter.start();
for(int i = 0; i < 10000000; ++i)
{ }
counter.stop();
counter_type.interval_t us1 = counter.microseconds();
counter_type.interval_t ms1 = counter.milliseconds();
counter_type.interval_t s1 = counter.seconds();
for(int i = 0; i < 10000000; ++i)
{ }
counter.stop();
counter_type.interval_t us2 = counter.microseconds();
counter_type.interval_t ms2 = counter.milliseconds();
counter_type.interval_t s2 = counter.seconds();
assert(us2 >= us1);
assert(ms2 >= ms1);
assert(s2 >= s1);
}
/* ////////////////////////////////////////////////////////////////////////// */
/** A performance counter that provides process-specific performance timings
This class uses the operating system's performance monitoring facilities to provide timing
information pertaining to the calling process only, irrespective of the activities of other
processes on the system. This class does not provide meaningful timing information on operating
systems that do not provide process-specific monitoring.
This class is available only on Windows.
*/
class ProcessTimesCounter
{
private:
alias long epoch_type;
public:
/** The interval type
The type of the interval measurement (generally a 64-bit signed integer)
*/
alias long interval_t;
deprecated alias interval_t interval_type;
private:
/** Class constructor
*/
shared static this()
{
sm_process = GetCurrentProcess();
}
public:
/** Starts measurement
Begins a measurement period
*/
void start()
{
FILETIME creationTime;
FILETIME exitTime;
GetProcessTimes(sm_process, &creationTime, &exitTime, cast(FILETIME*)&m_kernelStart, cast(FILETIME*)&m_userStart);
}
/** Ends measurement
Marks the end of a measurement period.
This must be called before querying the elapsed time with
$(D_PARAM period_count), $(D_PARAM seconds),
$(D_PARAM milliseconds), or $(D_PARAM microseconds).
The $(D_PARAM stop()) method may be called multiple times without an intervening $(D_PARAM start()).
Elapsed time is always measured from most recent $(D_PARAM start()) to the most recent
$(D_PARAM stop()).
*/
void stop()
{
FILETIME creationTime;
FILETIME exitTime;
GetProcessTimes(sm_process, &creationTime, &exitTime, cast(FILETIME*)&m_kernelEnd, cast(FILETIME*)&m_userEnd);
}
public:
/** The elapsed count in the measurement period for kernel mode activity
This represents the extent, in machine-specific increments, of the measurement period for kernel mode activity
*/
interval_t kernelPeriodCount() const
{
return m_kernelEnd - m_kernelStart;
}
/** The number of whole seconds in the measurement period for kernel mode activity
This represents the extent, in whole seconds, of the measurement period for kernel mode activity
*/
interval_t kernelSeconds() const
{
return kernelPeriodCount() / 10000000;
}
/** The number of whole milliseconds in the measurement period for kernel mode activity
This represents the extent, in whole milliseconds, of the measurement period for kernel mode activity
*/
interval_t kernelMilliseconds() const
{
return kernelPeriodCount() / 10000;
}
/** The number of whole microseconds in the measurement period for kernel mode activity
This represents the extent, in whole microseconds, of the measurement period for kernel mode activity
*/
interval_t kernelMicroseconds() const
{
return kernelPeriodCount() / 10;
}
/** The elapsed count in the measurement period for user mode activity
This represents the extent, in machine-specific increments, of the measurement period for user mode activity
*/
interval_t userPeriodCount() const
{
return m_userEnd - m_userStart;
}
/** The number of whole seconds in the measurement period for user mode activity
This represents the extent, in whole seconds, of the measurement period for user mode activity
*/
interval_t userSeconds() const
{
return userPeriodCount() / 10000000;
}
/** The number of whole milliseconds in the measurement period for user mode activity
This represents the extent, in whole milliseconds, of the measurement period for user mode activity
*/
interval_t userMilliseconds() const
{
return userPeriodCount() / 10000;
}
/** The number of whole microseconds in the measurement period for user mode activity
This represents the extent, in whole microseconds, of the measurement period for user mode activity
*/
interval_t userMicroseconds() const
{
return userPeriodCount() / 10;
}
/** The elapsed count in the measurement period
This represents the extent, in machine-specific increments, of the measurement period
*/
interval_t periodCount() const
{
return kernelPeriodCount() + userPeriodCount();
}
/** The number of whole seconds in the measurement period
This represents the extent, in whole seconds, of the measurement period
*/
interval_t seconds() const
{
return periodCount() / 10000000;
}
/** The number of whole milliseconds in the measurement period
This represents the extent, in whole milliseconds, of the measurement period
*/
interval_t milliseconds() const
{
return periodCount() / 10000;
}
/** The number of whole microseconds in the measurement period
This represents the extent, in whole microseconds, of the measurement period
*/
interval_t microseconds() const
{
return periodCount() / 10;
}
private:
epoch_type m_kernelStart;
epoch_type m_kernelEnd;
epoch_type m_userStart;
epoch_type m_userEnd;
__gshared HANDLE sm_process;
}
unittest
{
alias ProcessTimesCounter counter_type;
counter_type counter = new counter_type();
counter.start();
for(int i = 0; i < 10000000; ++i)
{ }
counter.stop();
counter_type.interval_t us1 = counter.microseconds();
counter_type.interval_t ms1 = counter.milliseconds();
counter_type.interval_t s1 = counter.seconds();
for(int i = 0; i < 10000000; ++i)
{ }
counter.stop();
counter_type.interval_t us2 = counter.microseconds();
counter_type.interval_t ms2 = counter.milliseconds();
counter_type.interval_t s2 = counter.seconds();
assert(us2 >= us1);
assert(ms2 >= ms1);
assert(s2 >= s1);
}
/* ////////////////////////////////////////////////////////////////////////// */
}
else version(Posix)
{
extern (C)
{
private struct timeval
{
int tv_sec; // The number of seconds, since Jan. 1, 1970, in the time value.
int tv_usec; // The number of microseconds in the time value.
};
private struct timezone
{
int tz_minuteswest; // minutes west of Greenwich.
int tz_dsttime; // type of dst corrections to apply.
};
private void gettimeofday(timeval *tv, timezone *tz);
}
/* ////////////////////////////////////////////////////////////////////////// */
class PerformanceCounter
{
// documentation is in the Windows version of the class above
private:
alias timeval epoch_type;
public:
alias long interval_t;
public:
void start()
{
timezone tz;
gettimeofday(&m_start, &tz);
}
void stop()
{
timezone tz;
gettimeofday(&m_end, &tz);
}
public:
interval_t periodCount() const
{
return microseconds;
}
interval_t seconds() const
{
interval_t start = cast(interval_t)m_start.tv_sec + cast(interval_t)m_start.tv_usec / (1000 * 1000);
interval_t end = cast(interval_t)m_end.tv_sec + cast(interval_t)m_end.tv_usec / (1000 * 1000);
return end - start;
}
interval_t milliseconds() const
{
interval_t start = cast(interval_t)m_start.tv_sec * 1000 + cast(interval_t)m_start.tv_usec / 1000;
interval_t end = cast(interval_t)m_end.tv_sec * 1000 + cast(interval_t)m_end.tv_usec / 1000;
return end - start;
}
interval_t microseconds() const
{
interval_t start = cast(interval_t)m_start.tv_sec * 1000 * 1000 + cast(interval_t)m_start.tv_usec;
interval_t end = cast(interval_t)m_end.tv_sec * 1000 * 1000 + cast(interval_t)m_end.tv_usec;
return end - start;
}
private:
epoch_type m_start; // start of measurement period
epoch_type m_end; // End of measurement period
}
unittest
{
alias PerformanceCounter counter_type;
counter_type counter = new counter_type();
counter.start();
for(int i = 0; i < 10000000; ++i)
{ }
counter.stop();
counter_type.interval_t us1 = counter.microseconds();
counter_type.interval_t ms1 = counter.milliseconds();
counter_type.interval_t s1 = counter.seconds();
for(int i = 0; i < 10000000; ++i)
{ }
counter.stop();
counter_type.interval_t us2 = counter.microseconds();
counter_type.interval_t ms2 = counter.milliseconds();
counter_type.interval_t s2 = counter.seconds();
assert(us2 >= us1);
assert(ms2 >= ms1);
assert(s2 >= s1);
}
/* ////////////////////////////////////////////////////////////////////////// */
}
else
{
const int platform_not_supported = 0;
static assert(platform_not_supported);
}
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