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740b175973
refactoring of cpus.c continues with cpu timer state extraction.
cpu-timers: responsible for the softmmu cpu timers state,
including cpu clocks and ticks.
icount: counts the TCG instructions executed. As such it is specific to
the TCG accelerator. Therefore, it is built only under CONFIG_TCG.
One complication is due to qtest, which uses an icount field to warp time
as part of qtest (qtest_clock_warp).
In order to solve this problem, provide a separate counter for qtest.
This requires fixing assumptions scattered in the code that
qtest_enabled() implies icount_enabled(), checking each specific case.
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[remove redundant initialization with qemu_spice_init]
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
[fix lingering calls to icount_get]
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
/*
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* Timed average computation tests
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*
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* Copyright Nodalink, EURL. 2014
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*
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* Authors:
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* Benoît Canet <benoit.canet@nodalink.com>
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*
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* This work is licensed under the terms of the GNU LGPL, version 2 or later.
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* See the COPYING.LIB file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "sysemu/cpu-timers.h"
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#include "qemu/timed-average.h"
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/* This is the clock for QEMU_CLOCK_VIRTUAL */
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static int64_t my_clock_value;
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int64_t cpu_get_clock(void)
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{
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return my_clock_value;
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}
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static void account(TimedAverage *ta)
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{
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timed_average_account(ta, 1);
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timed_average_account(ta, 5);
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timed_average_account(ta, 2);
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timed_average_account(ta, 4);
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timed_average_account(ta, 3);
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}
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static void test_average(void)
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{
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TimedAverage ta;
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uint64_t result;
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int i;
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/* we will compute some average on a period of 1 second */
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timed_average_init(&ta, QEMU_CLOCK_VIRTUAL, NANOSECONDS_PER_SECOND);
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result = timed_average_min(&ta);
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g_assert(result == 0);
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result = timed_average_avg(&ta);
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g_assert(result == 0);
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result = timed_average_max(&ta);
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g_assert(result == 0);
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for (i = 0; i < 100; i++) {
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account(&ta);
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result = timed_average_min(&ta);
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g_assert(result == 1);
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result = timed_average_avg(&ta);
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g_assert(result == 3);
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result = timed_average_max(&ta);
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g_assert(result == 5);
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my_clock_value += NANOSECONDS_PER_SECOND / 10;
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}
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my_clock_value += NANOSECONDS_PER_SECOND * 100;
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result = timed_average_min(&ta);
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g_assert(result == 0);
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result = timed_average_avg(&ta);
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g_assert(result == 0);
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result = timed_average_max(&ta);
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g_assert(result == 0);
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for (i = 0; i < 100; i++) {
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account(&ta);
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result = timed_average_min(&ta);
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g_assert(result == 1);
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result = timed_average_avg(&ta);
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g_assert(result == 3);
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result = timed_average_max(&ta);
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g_assert(result == 5);
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my_clock_value += NANOSECONDS_PER_SECOND / 10;
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}
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}
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int main(int argc, char **argv)
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{
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/* tests in the same order as the header function declarations */
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g_test_init(&argc, &argv, NULL);
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g_test_add_func("/timed-average/average", test_average);
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return g_test_run();
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}
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