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testsuite_performance.h (time_counter): New.

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2003-06-18  Benjamin Kosnik  <bkoz@redhat.com>

	* testsuite/testsuite_performance.h (time_counter): New.
	(resource_counter): New.
	(report_performance): New.
	(start_counters): New.
	(stop_counters): New.
	(clear_counters): New.
	* testsuite/performance/allocator.cc: Instrument.
	* testsuite/performance/cout_insert_int.cc: Same.
	* testsuite/performance/complex_norm.cc: Same.
	* testsuite/performance/filebuf_sputc.cc: New.
	* testsuite/performance/fstream_seek_write.cc: Same.
	* testsuite/performance/ifstream_getline.cc: Same.
	* testsuite/performance/map_create_fill.cc: Same.
	* testsuite/performance/ofstream_insert_float.cc: Same.
	* testsuite/performance/ofstream_insert_int.cc: Same.
	* testsuite/performance/string_append.cc: Convert.
	* scripts/check_performance: New.
	* testsuite/Makefile.am (check-performance): New.
	(CLEANFILES): Add.

From-SVN: r68175
This commit is contained in:
Benjamin Kosnik 2003-06-19 04:00:59 +00:00 committed by Benjamin Kosnik
parent 3a978d72e6
commit ce4f8c6b7b
15 changed files with 677 additions and 85 deletions
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22
libstdc++-v3/ChangeLog
View File

@ -1,3 +1,25 @@
2003-06-18 Benjamin Kosnik <bkoz@redhat.com>
* testsuite/testsuite_performance.h (time_counter): New.
(resource_counter): New.
(report_performance): New.
(start_counters): New.
(stop_counters): New.
(clear_counters): New.
* testsuite/performance/allocator.cc: Instrument.
* testsuite/performance/cout_insert_int.cc: Same.
* testsuite/performance/complex_norm.cc: Same.
* testsuite/performance/filebuf_sputc.cc: New.
* testsuite/performance/fstream_seek_write.cc: Same.
* testsuite/performance/ifstream_getline.cc: Same.
* testsuite/performance/map_create_fill.cc: Same.
* testsuite/performance/ofstream_insert_float.cc: Same.
* testsuite/performance/ofstream_insert_int.cc: Same.
* testsuite/performance/string_append.cc: Convert.
* scripts/check_performance: New.
* testsuite/Makefile.am (check-performance): New.
(CLEANFILES): Add.
2003-06-18 Paolo Carlini <pcarlini@unitus.it>
Benjamin Kosnik <bkoz@redhat.com>

48
libstdc++-v3/scripts/check_performance Executable file
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@ -0,0 +1,48 @@
#!/usr/bin/env bash
# Script to do performance testing.
# Invocation
# check_performance SRC_DIR BUILD_DIR
# 1: variables
#
SRC_DIR=$1
BUILD_DIR=$2
# Now that we've successfully translated the numerical option into
# a symbolic one, we can safely ignore it.
shift
# This has been true all along. Found out about it the hard way...
case $BASH_VERSION in
1*)
echo 'You need bash 2.x to run check_performance. Exiting.';
exit 1 ;;
*) ;;
esac
flags_script=$BUILD_DIR/scripts/testsuite_flags
INCLUDES=`$flags_script --build-includes`
FLAGS=`$flags_script --cxxflags`
COMPILER=`$flags_script --build-cxx`
SH_FLAG="-Wl,--rpath -Wl,$BUILD_DIR/../../gcc \
-Wl,--rpath -Wl,$BUILD_DIR/src/.libs"
ST_FLAG="-static"
LINK=$SH_FLAG
CXX="$COMPILER $INCLUDES $FLAGS $LINK"
TESTS_FILE="testsuite_files_performance"
for NAME in `cat $TESTS_FILE`
do
echo $NAME
FILE_NAME="`basename $NAME`"
EXE_NAME="`echo $FILE_NAME | sed 's/cc$/exe/'`"
$CXX $SRC_DIR/testsuite/$NAME -o $EXE_NAME
./$EXE_NAME
echo ""
done
exit 0

34
libstdc++-v3/testsuite/Makefile.am
View File

@ -125,31 +125,31 @@ check-abi-verbose:
endif
# These two special 'check-script' rules use the bash script 'check'
# to do testing. This script is not as portable as the dejagnu test
# harness, and is thus off by default. It does produce interesting
# output however, including various performance analysis items like
# compile time, execution time, and binary size.
check_survey = ${glibcpp_builddir}/scripts/check_survey
check-script: ${check_survey}
-@(chmod + ${check_survey}; \
${check_survey} 0)
# These two special 'check-script' rules use the bash script
# 'check_survey' to do testing. This script is not as portable as the
# dejagnu test harness, and is thus off by default. It does produce
# interesting output however, including various performance analysis
# items like compile time, execution time, and binary size.
survey_script = ${glibcpp_builddir}/scripts/check_survey
check-script: ${survey_script}
-@(chmod + ${survey_script}; \
${survey_script} 0)
check-script-install: ${check_survey}
-@(chmod + ${check_survey}; \
${check_survey} 0)
check-script-install: ${survey_script}
-@(chmod + ${survey_script}; \
${survey_script} 0)
# Runs the testsuite/performance tests.
# Some of these tests create large (~75MB) files, allocate huge
# ammounts of memory, or otherwise tie up machine resources. Thus,
# running this is off by default.
check_performance=${glibcpp_srcdir}/scripts/check_performance
check-performance: ${check_performance}
-@(chmod + ${check_performance}; \
${check_performance} ${glibcpp_srcdir} ${glibcpp_builddir})
performance_script=${glibcpp_srcdir}/scripts/check_performance
check-performance: ${performance_script}
-@(chmod + ${performance_script}; \
${performance_script} ${glibcpp_srcdir} ${glibcpp_builddir})
# By adding these files here, automake will remove them for 'make clean'
CLEANFILES = *.txt *.tst *.exe core* filebuf_* tmp* ostream_* *.log *.sum \
testsuite_* site.exp abi_check baseline_symbols
testsuite_* site.exp abi_check baseline_symbols *.performance

36
libstdc++-v3/testsuite/Makefile.in
View File

@ -181,24 +181,24 @@ abi_check_SOURCES = abi_check.cc
baseline_dir = @baseline_dir@
baseline_file = ${baseline_dir}/baseline_symbols.txt
extract_symvers = @glibcpp_srcdir@/scripts/extract_symvers
extract_symvers = @glibcpp_srcdir@/config/abi/extract_symvers
# These two special 'check-script' rules use the bash script 'check'
# to do testing. This script is not as portable as the dejagnu test
# harness, and is thus off by default. It does produce interesting
# output however, including various performance analysis items like
# compile time, execution time, and binary size.
check_survey = ${glibcpp_builddir}/scripts/check_survey
# These two special 'check-script' rules use the bash script
# 'check_survey' to do testing. This script is not as portable as the
# dejagnu test harness, and is thus off by default. It does produce
# interesting output however, including various performance analysis
# items like compile time, execution time, and binary size.
survey_script = ${glibcpp_builddir}/scripts/check_survey
# Runs the testsuite/performance tests.
# Some of these tests create large (~75MB) files, allocate huge
# ammounts of memory, or otherwise tie up machine resources. Thus,
# running this is off by default.
check_performance = ${glibcpp_srcdir}/scripts/check_performance
performance_script = ${glibcpp_srcdir}/scripts/check_performance
# By adding these files here, automake will remove them for 'make clean'
CLEANFILES = *.txt *.tst *.exe core* filebuf_* tmp* ostream_* *.log *.sum \
testsuite_* site.exp abi_check baseline_symbols
testsuite_* site.exp abi_check baseline_symbols *.performance
CONFIG_HEADER = ../config.h
CONFIG_CLEAN_FILES =
@ -527,16 +527,16 @@ new-abi-baseline:
@GLIBCPP_TEST_ABI_TRUE@ -@(./abi_check --check-verbose ./current_symbols.txt ${baseline_file})
@GLIBCPP_TEST_ABI_FALSE@check-abi:
@GLIBCPP_TEST_ABI_FALSE@check-abi-verbose:
check-script: ${check_survey}
-@(chmod + ${check_survey}; \
${check_survey} 0)
check-script: ${survey_script}
-@(chmod + ${survey_script}; \
${survey_script} 0)
check-script-install: ${check_survey}
-@(chmod + ${check_survey}; \
${check_survey} 0)
check-performance: ${check_performance}
-@(chmod + ${check_performance}; \
${check_performance} ${glibcpp_srcdir} ${glibcpp_builddir})
check-script-install: ${survey_script}
-@(chmod + ${survey_script}; \
${survey_script} 0)
check-performance: ${performance_script}
-@(chmod + ${performance_script}; \
${performance_script} ${glibcpp_srcdir} ${glibcpp_builddir})
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.

194
libstdc++-v3/testsuite/performance/allocator.cc
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@ -25,15 +25,193 @@
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include <list>
/*
*
*
* The goal with this application is to compare the performance
* between different STL allocators relative to the default
* __pool_alloc.
*
* The container used for the tests is vector, which as stated by
* SGI "Vector is the simplest of the STL container classes, and in
* many cases the most efficient.".
*
* NOTE! The vector<> container does some "caching" of it's own and
* therefore we redeclare the variable in each iteration (forcing the
* const/destr to be called and thus free memory).
*
* NOTE! The usage of gettimeofday is unwanted since it's not POSIX,
* however I have not found a more generic system call to use -
* ideas are greatly appriciated!
*
* NOTE! This version only does operations on vector<int>. More/other
* data types should maybe also be tested - ideas are always welcome!
*
* I assume that glibc/underlying malloc() implementation has been
* compiled with -O2 thus should this application also be compiled
* with -O2 in order to get relevant results.
*/
// Primarily a test of the default allocator.
// http://gcc.gnu.org/ml/libstdc++/2001-05/msg00105.html
int main ()
// 2003-02-05 Stefan Olsson <stefan@snon.net>
#include <vector>
#include <sys/time.h>
#include <ext/mt_allocator.h>
#include <ext/malloc_allocator.h>
#include <testsuite_performance.h>
using namespace std;
using __gnu_cxx::__malloc_alloc;
using __gnu_cxx::__mt_alloc;
/*
* In order to avoid that the time it takes for the application to
* startup/shutdown affect the end result, we define a target
* duration (in seconds) for which all tests should run.
* Each test is responsible for "calibrating" their # of iterations
* to come as close as possible to this target based on the time
* it takes to complete the test using the default __pool_alloc.
*/
int target_run_time = 10;
/*
* The number of iterations to be performed in order to figure out
* the "speed" of this computer and adjust the number of iterations
* needed to come close to target_run_time.
*/
int calibrate_iterations = 100000;
/*
* The number of values to insert in the vector, 32 will cause
* 5 (re)allocations to be performed (sizes 4, 8, 16, 32 and 64)
* This means that all allocations are within _MAX_BYTES = 128
* as defined in stl_alloc.h for __pool_alloc.
* Whether or not this value is relevant in "the real world"
* or not I don't know and should probably be investigated in
* more detail.
*/
int insert_values = 32;
static struct timeval _tstart, _tend;
static struct timezone tz;
void
tstart(void)
{
std::list<int> List;
for (int i = 0; i < 10000000; ++i )
List.push_back( int() );
return 0;
gettimeofday(&_tstart, &tz);
}
void
tend(void)
{
gettimeofday(&_tend, &tz);
}
double
tval()
{
double t1, t2;
t1 =(double)_tstart.tv_sec +(double)_tstart.tv_usec/(1000*1000);
t2 =(double)_tend.tv_sec +(double)_tend.tv_usec/(1000*1000);
return t2 - t1;
}
int
calibrate_test_ints(void)
{
tstart();
for (int i = 0; i < calibrate_iterations; i++)
{
vector<int> v1;
for(int j = 0; j < insert_values; j++)
v1.push_back(1);
}
tend();
return(int)((double)target_run_time / tval()) * calibrate_iterations;
}
double
test_ints_pool_alloc(int iterations)
{
tstart();
for(int i = 0; i < iterations; i++)
{
vector<int> v1;
for(int j = 0; j < insert_values; j++)
v1.push_back(1);
}
tend();
return tval();
}
double
test_ints_malloc_alloc(int iterations)
{
tstart();
for(int i = 0; i < iterations; i++)
{
vector<int, __malloc_alloc<0> > v1;
for(int j = 0; j < insert_values; j++)
{
v1.push_back(1);
}
}
tend();
return tval();
}
double
test_ints_mt_alloc(int iterations)
{
tstart();
for(int i = 0; i < iterations; i++)
{
vector<int, __mt_alloc<0> > v1;
for(int j = 0; j < insert_values; j++)
{
v1.push_back(1);
}
}
tend();
return tval();
}
// http://gcc.gnu.org/ml/libstdc++/2001-05/msg00105.html
// http://gcc.gnu.org/ml/libstdc++/2003-05/msg00231.html
int main(void)
{
using namespace __gnu_cxx_test;
time_counter time;
resource_counter resource;
int iterations = calibrate_test_ints();
start_counters(time, resource);
test_ints_pool_alloc(iterations);
stop_counters(time, resource);
report_performance(__FILE__, "default", time, resource);
clear_counters(time, resource);
start_counters(time, resource);
test_ints_malloc_alloc(iterations);
stop_counters(time, resource);
report_performance(__FILE__, "malloc", time, resource);
clear_counters(time, resource);
start_counters(time, resource);
test_ints_mt_alloc(iterations);
stop_counters(time, resource);
report_performance(__FILE__, "mt", time, resource);
return 0;
}

42
libstdc++-v3/testsuite/performance/complex_norm.cc
View File

@ -26,34 +26,58 @@
// the GNU General Public License.
#include <complex>
#include <testsuite_performance.h>
// based on libstdc++/5730, use --fast-math
int main()
{
typedef std::complex<double> complex_type;
using namespace std;
using namespace __gnu_cxx_test;
time_counter time;
resource_counter resource;
const int iterations = 2000;
typedef complex<double> complex_type;
complex_type u[2048];
for (int i = 0; i < 2048; ++i)
u[i] = 1.0;
for (int i = 0; i < 2000; ++i)
start_counters(time, resource);
for (int i = 0; i < iterations; ++i)
{
complex_type * p = u;
for (int j = 0; j < 2048; ++j)
{
#if 1
double u2 = norm(*p);
#else
// Shouldn't be slower than the above.
double ur = real(*p);
double ui = imag(*p);
double u2 = ur * ur + ui * ui;
#endif
double t = u2 * 0.1;
*p *= complex_type(cos(t), sin(t));
++p;
}
}
stop_counters(time, resource);
report_performance(__FILE__, "norm", time, resource);
clear_counters(time, resource);
start_counters(time, resource);
for (int i = 0; i < iterations; ++i)
{
complex_type * p = u;
for (int j = 0; j < 2048; ++j)
{
// Shouldn't be slower than the above.
double ur = real(*p);
double ui = imag(*p);
double u2 = ur * ur + ui * ui;
double t = u2 * 0.1;
*p *= complex_type(cos(t), sin(t));
++p;
}
}
stop_counters(time, resource);
report_performance(__FILE__, "", time, resource);
return 0;
}

14
libstdc++-v3/testsuite/performance/cout_insert_int.cc
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@ -26,11 +26,23 @@
// the GNU General Public License.
#include <iostream>
#include <testsuite_performance.h>
// libstdc++/7076
int main()
{
for (int i = 0; i < 150000; i++)
using namespace std;
using namespace __gnu_cxx_test;
time_counter time;
resource_counter resource;
const int iterations = 150000;
start_counters(time, resource);
for (int i = 0; i < iterations; i++)
std::cout << i << '\n';
stop_counters(time, resource);
report_performance(__FILE__, "", time, resource);
return 0;
}

73
libstdc++-v3/testsuite/performance/filebuf_sputc.cc Normal file
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@ -0,0 +1,73 @@
// Copyright (C) 2003 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include <cstdio>
#include <fstream>
#include <testsuite_performance.h>
// libstdc++/9876
int main()
{
using namespace std;
using namespace __gnu_cxx_test;
time_counter time;
resource_counter resource;
const int iterations = 100000000;
// C
FILE* file = fopen("tmp", "w+");
start_counters(time, resource);
for (int i = 0; i < iterations; ++i)
putc(i % 100, file);
stop_counters(time, resource);
fclose(file);
report_performance(__FILE__, "C", time, resource);
clear_counters(time, resource);
// C unlocked
file = fopen("tmp", "w+");
start_counters(time, resource);
for (int i = 0; i < iterations; ++i)
putc_unlocked(i % 100, file);
stop_counters(time, resource);
fclose(file);
report_performance(__FILE__, "C unlocked", time, resource);
clear_counters(time, resource);
// C++
filebuf buf;
buf.open("tmp", ios_base::out | ios_base::in | ios_base::trunc);
start_counters(time, resource);
for (int i = 0; i < iterations; ++i)
buf.sputc(i % 100);
stop_counters(time, resource);
report_performance(__FILE__, "C++", time, resource);
return 0;
}

13
libstdc++-v3/testsuite/performance/fstream_seek_write.cc
View File

@ -26,21 +26,32 @@
// the GNU General Public License.
#include <fstream>
#include <testsuite_performance.h>
// libstdc++/10672
int main()
{
using namespace std;
using namespace __gnu_cxx_test;
time_counter time;
resource_counter resource;
const int iterations = 300000;
fstream s("tmp_perf_seek", ios::binary | ios::in | ios::out | ios::trunc);
if (s.good())
{
for (int i = 0; i < 300000; i++)
start_counters(time, resource);
for (int i = 0; i < iterations; i++)
{
s.seekp(0);
s.write((char *) & i, sizeof(int));
s.seekp(sizeof(int));
s.write((char *) & i, sizeof(int));
}
stop_counters(time, resource);
report_performance(__FILE__, "", time, resource);
}
return 0;
}

15
libstdc++-v3/testsuite/performance/ifstream_getline.cc
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@ -26,17 +26,26 @@
// the GNU General Public License.
#include <fstream>
#include <testsuite_performance.h>
// libstdc++/5001 (100,000 line input file)
int main ()
{
using namespace std;
using namespace __gnu_cxx_test;
time_counter time;
resource_counter resource;
const char* name = "/usr/share/dict/linux.words";
ifstream in(name);
char buffer[BUFSIZ];
start_counters(time, resource);
while(!in.eof())
{
in.getline(buffer, BUFSIZ);
}
in.getline(buffer, BUFSIZ);
stop_counters(time, resource);
report_performance(__FILE__, "", time, resource);
return 0;
}

28
libstdc++-v3/testsuite/performance/map_create_fill.cc
View File

@ -20,30 +20,34 @@
#include <map>
#include <testsuite_hooks.h>
static bool test = true;
#include <testsuite_performance.h>
static void create_and_fill(const unsigned int n)
{
typedef std::map<int, int> Map;
Map m;
bool test = true;
for (unsigned int i = 0; i < n; ++i)
m[i] = i;
VERIFY ( m.size() == n );
}
void test01()
{
const unsigned n = 10000000;
for (unsigned int i = 0; i < n; ++i)
create_and_fill( 0 );
VERIFY( m.size() == n );
}
// http://gcc.gnu.org/ml/libstdc++/2003-03/msg00000.html
int main()
{
test01();
using namespace std;
using namespace __gnu_cxx_test;
time_counter time;
resource_counter resource;
const int iterations = 100000000;
start_counters(time, resource);
for (int i = 0; i < iterations; ++i)
create_and_fill( 0 );
stop_counters(time, resource);
report_performance(__FILE__, "", time, resource);
return 0;
}

16
libstdc++-v3/testsuite/performance/ofstream_insert_float.cc
View File

@ -26,15 +26,27 @@
// the GNU General Public License.
#include <fstream>
#include <testsuite_performance.h>
// based on libstdc++/8761 poor fstream performance (converted to float)
int main()
{
std::ofstream out("tmp_perf_float.txt");
for (int i = 0; i < 10000000; ++i)
using namespace std;
using namespace __gnu_cxx_test;
time_counter time;
resource_counter resource;
const int iterations = 10000000;
ofstream out("tmp_perf_float.txt");
start_counters(time, resource);
for (int i = 0; i < iterations; ++i)
{
float f = static_cast<float>(i);
out << f << "\n";
}
stop_counters(time, resource);
report_performance(__FILE__, "", time, resource);
return 0;
};

16
libstdc++-v3/testsuite/performance/ofstream_insert_int.cc
View File

@ -26,12 +26,24 @@
// the GNU General Public License.
#include <fstream>
#include <testsuite_performance.h>
// libstdc++/8761 poor fstream performance
int main()
{
std::ofstream out("tmp_perf_int.txt");
for (int i = 0; i < 10000000; ++i)
using namespace std;
using namespace __gnu_cxx_test;
time_counter time;
resource_counter resource;
const int iterations = 10000000;
ofstream out("tmp_perf_int.txt");
start_counters(time, resource);
for (int i = 0; i < iterations; ++i)
out << i << "\n";
stop_counters(time, resource);
report_performance(__FILE__, "", time, resource);
return 0;
};

27
libstdc++-v3/testsuite/performance/string_append.cc
View File

@ -28,6 +28,7 @@
#include <ctime>
#include <iostream>
#include <string>
#include <testsuite_performance.h>
using namespace std;
@ -36,7 +37,7 @@ test_append_char(int how_much)
{
string buf; // no preallocation
for (int i = 0; i < how_much; ++i)
buf.append(static_cast<string::size_type>(1) , 'x');
buf.append(static_cast<string::size_type>(1) , 'x');
}
void
@ -45,29 +46,31 @@ test_append_string(int how_much)
string s(static_cast<string::size_type>(1) , 'x');
string buf; // no preallocation
for (int i = 0; i < how_much; ++i)
buf.append(s);
buf.append(s);
}
void
run_benchmark1(int how_much)
{
clock_t t0 = clock();
using namespace __gnu_cxx_test;
time_counter time;
resource_counter resource;
start_counters(time, resource);
test_append_char(how_much);
clock_t t1 = clock();
cout << "Execution time of " << how_much
<< " string::append(char) calls: "
<< (static_cast<float>(t1 - t0)/CLOCKS_PER_SEC) << " sec."<< endl;
stop_counters(time, resource);
report_performance(__FILE__, "char", time, resource);
}
void
run_benchmark2(int how_much)
{
clock_t t0 = clock();
using namespace __gnu_cxx_test;
time_counter time;
resource_counter resource;
start_counters(time, resource);
test_append_string(how_much);
clock_t t1 = clock();
cout << "Execution time of " << how_much
<< " string::append(const string&) calls: "
<< (static_cast<float>(t1 - t0)/CLOCKS_PER_SEC) << " sec." << endl;
stop_counters(time, resource);
report_performance(__FILE__, "string", time, resource);
}
// libstdc++/5380

184
libstdc++-v3/testsuite/testsuite_performance.h Normal file
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@ -0,0 +1,184 @@
// -*- C++ -*-
// Testing performance utilities for the C++ library testsuite.
//
// Copyright (C) 2003 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
//
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#ifndef _GLIBCPP_PERFORMANCE_H
#define _GLIBCPP_PERFORMANCE_H
#include <sys/times.h>
#include <sys/resource.h>
#include <malloc.h>
#include <string>
#include <fstream>
#include <iomanip>
namespace __gnu_cxx_test
{
class time_counter
{
clock_t elapsed_begin;
clock_t elapsed_end;
tms tms_begin;
tms tms_end;
public:
time_counter()
{ this->clear(); }
void
clear()
{
elapsed_begin = 0;
elapsed_end = 0;
memset(&tms_begin, 0, sizeof(tms));
memset(&tms_end, 0, sizeof(tms));
}
void
start()
{ elapsed_begin = times(&tms_begin); }
void
stop()
{ elapsed_end = times(&tms_end); }
size_t
real_time() const
{ return elapsed_end - elapsed_begin; }
size_t
user_time() const
{ return tms_end.tms_utime - tms_begin.tms_utime; }
size_t
system_time() const
{ return tms_end.tms_stime - tms_begin.tms_stime; }
};
class resource_counter
{
int who;
rusage rusage_begin;
rusage rusage_end;
struct mallinfo allocation_begin;
struct mallinfo allocation_end;
public:
resource_counter(int i = RUSAGE_SELF) : who(i)
{ this->clear(); }
void
clear()
{
memset(&rusage_begin, 0, sizeof(rusage_begin));
memset(&rusage_end, 0, sizeof(rusage_end));
memset(&allocation_begin, 0, sizeof(allocation_begin));
memset(&allocation_end, 0, sizeof(allocation_end));
}
void
start()
{
if (getrusage(who, &rusage_begin) != 0 )
memset(&rusage_begin, 0, sizeof(rusage_begin));
allocation_begin = mallinfo();
}
void
stop()
{
if (getrusage(who, &rusage_end) != 0 )
memset(&rusage_end, 0, sizeof(rusage_end));
allocation_end = mallinfo();
}
int
allocated_memory() const
{ return allocation_end.arena - allocation_begin.arena; }
long
hard_page_fault() const
{ return rusage_end.ru_majflt - rusage_begin.ru_majflt; }
long
swapped() const
{ return rusage_end.ru_nswap - rusage_begin.ru_nswap; }
};
void
start_counters(time_counter& t, resource_counter& r)
{
t.start();
r.start();
}
void
stop_counters(time_counter& t, resource_counter& r)
{
t.stop();
r.stop();
}
void
clear_counters(time_counter& t, resource_counter& r)
{
t.clear();
r.clear();
}
void
report_performance(const std::string file, const std::string comment,
const time_counter& t, const resource_counter& r)
{
const char space = ' ';
const char tab = '\t';
const char* name = "libstdc++-v3.performance";
std::string::const_iterator i = file.begin() + file.find_last_of('/') + 1;
std::string testname(i, file.end());
std::ofstream out(name, std::ios_base::app);
out.setf(std::ios_base::left);
out << std::setw(25) << testname << tab;
out << std::setw(10) << comment << tab;
out.setf(std::ios_base::right);
out << std::setw(4) << t.real_time() << "r" << space;
out << std::setw(4) << t.user_time() << "u" << space;
out << std::setw(4) << t.system_time() << "s" << space;
// out << std::setw(4) << r.allocated_memory() << "mem" << space;
out << std::setw(4) << r.hard_page_fault() << "pf" << space;
out << std::endl;
out.close();
}
}; // namespace __gnu_cxx_test
#endif // _GLIBCPP_PERFORMANCE_H