/* * Timed average computation tests * * Copyright Nodalink, EURL. 2014 * * Authors: * BenoƮt Canet <benoit.canet@nodalink.com> * * This work is licensed under the terms of the GNU LGPL, version 2 or later. * See the COPYING.LIB file in the top-level directory. */ #include "qemu/osdep.h" #include "sysemu/cpu-timers.h" #include "qemu/timed-average.h" /* This is the clock for QEMU_CLOCK_VIRTUAL */ static int64_t my_clock_value; int64_t cpu_get_clock(void) { return my_clock_value; } static void account(TimedAverage *ta) { timed_average_account(ta, 1); timed_average_account(ta, 5); timed_average_account(ta, 2); timed_average_account(ta, 4); timed_average_account(ta, 3); } static void test_average(void) { TimedAverage ta; uint64_t result; int i; /* we will compute some average on a period of 1 second */ timed_average_init(&ta, QEMU_CLOCK_VIRTUAL, NANOSECONDS_PER_SECOND); result = timed_average_min(&ta); g_assert(result == 0); result = timed_average_avg(&ta); g_assert(result == 0); result = timed_average_max(&ta); g_assert(result == 0); for (i = 0; i < 100; i++) { account(&ta); result = timed_average_min(&ta); g_assert(result == 1); result = timed_average_avg(&ta); g_assert(result == 3); result = timed_average_max(&ta); g_assert(result == 5); my_clock_value += NANOSECONDS_PER_SECOND / 10; } my_clock_value += NANOSECONDS_PER_SECOND * 100; result = timed_average_min(&ta); g_assert(result == 0); result = timed_average_avg(&ta); g_assert(result == 0); result = timed_average_max(&ta); g_assert(result == 0); for (i = 0; i < 100; i++) { account(&ta); result = timed_average_min(&ta); g_assert(result == 1); result = timed_average_avg(&ta); g_assert(result == 3); result = timed_average_max(&ta); g_assert(result == 5); my_clock_value += NANOSECONDS_PER_SECOND / 10; } } int main(int argc, char **argv) { /* tests in the same order as the header function declarations */ g_test_init(&argc, &argv, NULL); g_test_add_func("/timed-average/average", test_average); return g_test_run(); }