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- /*
- * Copyright (C) 2014 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program 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 of the
- * License, or any later version.
- *
- * This program 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 program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- * You can also choose to distribute this program under the terms of
- * the Unmodified Binary Distribution Licence (as given in the file
- * COPYING.UBDL), provided that you have satisfied its requirements.
- */
-
- FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
-
- /** @file
- *
- * Profiling self-tests
- *
- */
-
- /* Forcibly enable assertions */
- #undef NDEBUG
-
- #include <string.h>
- #include <assert.h>
- #include <ipxe/test.h>
- #include <ipxe/profile.h>
-
- /** A profiling test */
- struct profile_test {
- /** Sample values */
- const unsigned long *samples;
- /** Number of samples */
- unsigned int count;
- /** Expected mean sample value */
- unsigned long mean;
- /** Expected standard deviation */
- unsigned long stddev;
- };
-
- /** Define inline data */
- #define DATA(...) { __VA_ARGS__ }
-
- /** Define a profiling test */
- #define PROFILE_TEST( name, MEAN, STDDEV, SAMPLES ) \
- static const unsigned long name ## _samples[] = SAMPLES; \
- static struct profile_test name = { \
- .samples = name ## _samples, \
- .count = ( sizeof ( name ## _samples ) / \
- sizeof ( name ## _samples [0] ) ), \
- .mean = MEAN, \
- .stddev = STDDEV, \
- }
-
- /** Empty data set */
- PROFILE_TEST ( empty, 0, 0, DATA() );
-
- /** Single-element data set (zero) */
- PROFILE_TEST ( zero, 0, 0, DATA ( 0 ) );
-
- /** Single-element data set (non-zero) */
- PROFILE_TEST ( single, 42, 0, DATA ( 42 ) );
-
- /** Multiple identical element data set */
- PROFILE_TEST ( identical, 69, 0, DATA ( 69, 69, 69, 69, 69, 69, 69 ) );
-
- /** Small element data set */
- PROFILE_TEST ( small, 5, 2, DATA ( 3, 5, 9, 4, 3, 2, 5, 7 ) );
-
- /** Random data set */
- PROFILE_TEST ( random, 70198, 394,
- DATA ( 69772, 70068, 70769, 69653, 70663, 71078, 70101, 70341,
- 70215, 69600, 70020, 70456, 70421, 69972, 70267, 69999,
- 69972 ) );
-
- /** Large-valued random data set */
- PROFILE_TEST ( large, 93533894UL, 25538UL,
- DATA ( 93510333UL, 93561169UL, 93492361UL, 93528647UL,
- 93557566UL, 93503465UL, 93540126UL, 93549020UL,
- 93502307UL, 93527320UL, 93537152UL, 93540125UL,
- 93550773UL, 93586731UL, 93521312UL ) );
-
- /**
- * Report a profiling test result
- *
- * @v test Profiling test
- * @v file Test code file
- * @v line Test code line
- */
- static void profile_okx ( struct profile_test *test, const char *file,
- unsigned int line ) {
- struct profiler profiler;
- unsigned long mean;
- unsigned long stddev;
- unsigned int i;
-
- /* Initialise profiler */
- memset ( &profiler, 0, sizeof ( profiler ) );
-
- /* Record sample values */
- for ( i = 0 ; i < test->count ; i++ )
- profile_update ( &profiler, test->samples[i] );
-
- /* Check resulting statistics */
- mean = profile_mean ( &profiler );
- stddev = profile_stddev ( &profiler );
- DBGC ( test, "PROFILE calculated mean %ld stddev %ld\n", mean, stddev );
- okx ( mean == test->mean, file, line );
- okx ( stddev == test->stddev, file, line );
- }
- #define profile_ok( test ) profile_okx ( test, __FILE__, __LINE__ )
-
- /**
- * Perform profiling self-tests
- *
- */
- static void profile_test_exec ( void ) {
-
- /* Perform profiling tests */
- profile_ok ( &empty );
- profile_ok ( &zero );
- profile_ok ( &single );
- profile_ok ( &identical );
- profile_ok ( &small );
- profile_ok ( &random );
- profile_ok ( &large );
- }
-
- /** Profiling self-test */
- struct self_test profile_test __self_test = {
- .name = "profile",
- .exec = profile_test_exec,
- };
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