145 lines
4.0 KiB
C
145 lines
4.0 KiB
C
/*
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* Copyright (C) 2014 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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* You can also choose to distribute this program under the terms of
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* the Unmodified Binary Distribution Licence (as given in the file
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* COPYING.UBDL), provided that you have satisfied its requirements.
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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/** @file
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*
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* Profiling self-tests
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*
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*/
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/* Forcibly enable assertions */
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#undef NDEBUG
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#include <string.h>
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#include <assert.h>
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#include <ipxe/test.h>
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#include <ipxe/profile.h>
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/** A profiling test */
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struct profile_test {
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/** Sample values */
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const unsigned long *samples;
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/** Number of samples */
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unsigned int count;
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/** Expected mean sample value */
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unsigned long mean;
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/** Expected standard deviation */
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unsigned long stddev;
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};
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/** Define inline data */
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#define DATA(...) { __VA_ARGS__ }
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/** Define a profiling test */
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#define PROFILE_TEST( name, MEAN, STDDEV, SAMPLES ) \
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static const unsigned long name ## _samples[] = SAMPLES; \
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static struct profile_test name = { \
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.samples = name ## _samples, \
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.count = ( sizeof ( name ## _samples ) / \
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sizeof ( name ## _samples [0] ) ), \
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.mean = MEAN, \
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.stddev = STDDEV, \
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}
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/** Empty data set */
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PROFILE_TEST ( empty, 0, 0, DATA() );
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/** Single-element data set (zero) */
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PROFILE_TEST ( zero, 0, 0, DATA ( 0 ) );
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/** Single-element data set (non-zero) */
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PROFILE_TEST ( single, 42, 0, DATA ( 42 ) );
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/** Multiple identical element data set */
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PROFILE_TEST ( identical, 69, 0, DATA ( 69, 69, 69, 69, 69, 69, 69 ) );
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/** Small element data set */
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PROFILE_TEST ( small, 5, 2, DATA ( 3, 5, 9, 4, 3, 2, 5, 7 ) );
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/** Random data set */
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PROFILE_TEST ( random, 70198, 394,
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DATA ( 69772, 70068, 70769, 69653, 70663, 71078, 70101, 70341,
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70215, 69600, 70020, 70456, 70421, 69972, 70267, 69999,
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69972 ) );
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/** Large-valued random data set */
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PROFILE_TEST ( large, 93533894UL, 25538UL,
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DATA ( 93510333UL, 93561169UL, 93492361UL, 93528647UL,
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93557566UL, 93503465UL, 93540126UL, 93549020UL,
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93502307UL, 93527320UL, 93537152UL, 93540125UL,
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93550773UL, 93586731UL, 93521312UL ) );
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/**
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* Report a profiling test result
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*
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* @v test Profiling test
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* @v file Test code file
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* @v line Test code line
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*/
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static void profile_okx ( struct profile_test *test, const char *file,
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unsigned int line ) {
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struct profiler profiler;
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unsigned long mean;
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unsigned long stddev;
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unsigned int i;
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/* Initialise profiler */
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memset ( &profiler, 0, sizeof ( profiler ) );
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/* Record sample values */
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for ( i = 0 ; i < test->count ; i++ )
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profile_update ( &profiler, test->samples[i] );
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/* Check resulting statistics */
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mean = profile_mean ( &profiler );
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stddev = profile_stddev ( &profiler );
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DBGC ( test, "PROFILE calculated mean %ld stddev %ld\n", mean, stddev );
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okx ( mean == test->mean, file, line );
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okx ( stddev == test->stddev, file, line );
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}
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#define profile_ok( test ) profile_okx ( test, __FILE__, __LINE__ )
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/**
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* Perform profiling self-tests
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*
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*/
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static void profile_test_exec ( void ) {
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/* Perform profiling tests */
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profile_ok ( &empty );
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profile_ok ( &zero );
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profile_ok ( &single );
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profile_ok ( &identical );
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profile_ok ( &small );
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profile_ok ( &random );
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profile_ok ( &large );
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}
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/** Profiling self-test */
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struct self_test profile_test __self_test = {
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.name = "profile",
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.exec = profile_test_exec,
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};
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