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/*
* QEMU buffer_is_zero speed benchmark
*
* This work is licensed under the terms of the GNU GPL, version 2 or
* (at your option) any later version. See the COPYING file in the
* top-level directory.
*/
#include "qemu/osdep.h"
#include "qemu/cutils.h"
#include "qemu/units.h"
static void test(const void *opaque)
{
size_t max = 64 * KiB;
void *buf = g_malloc0(max);
int accel_index = 0;
do {
if (accel_index != 0) {
g_test_message("%s", ""); /* gnu_printf Werror for simple "" */
}
for (size_t len = 1 * KiB; len <= max; len *= 4) {
double total = 0.0;
g_test_timer_start();
do {
buffer_is_zero_ge256(buf, len);
total += len;
} while (g_test_timer_elapsed() < 0.5);
total /= MiB;
g_test_message("buffer_is_zero #%d: %2zuKB %8.0f MB/sec",
accel_index, len / (size_t)KiB,
total / g_test_timer_last());
}
accel_index++;
} while (test_buffer_is_zero_next_accel());
g_free(buf);
}
int main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
g_test_add_data_func("/cutils/bufferiszero/speed", NULL, test);
return g_test_run();
}
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