/*
* Copyright (c) 2011 Martin Sucha
* Copyright (c) 2019 Vojtech Horky
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup hbench
* @{
*/
#include <dirent.h>
#include <str_error.h>
#include <stdio.h>
#include <stdlib.h>
#include "../hbench.h"
/** Execute directory listing benchmark.
*
* Note that while this benchmark tries to measure speed of direct
* read, it rather measures speed of FS cache as it is highly probable
* that the corresponding blocks would be cached after first run.
*/
static bool runner(bench_env_t *env, bench_run_t *run, uint64_t size)
{
const char *path = bench_env_param_get(env, "dirname", "/");
bench_run_start(run);
for (uint64_t i = 0; i < size; i++) {
DIR *dir = opendir(path);
if (dir == NULL) {
return bench_run_fail(run, "failed to open %s for reading: %s",
path, str_error(errno));
}
struct dirent *dp;
while ((dp = readdir(dir))) {
/* Do nothing */
}
closedir(dir);
}
bench_run_stop(run);
return true;
}
benchmark_t benchmark_dir_read = {
.name = "dir_read",
.desc = "Read contents of a directory (use 'dirname' param to alter the default).",
.entry = &runner,
.setup = NULL,
.teardown = NULL
};
/**
* @}
*/