/* Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

/* This is just a quick test program to see how long a wait is

 * produced by a select loop with an exponential backoff.

 *

 *   gcc -g -O2 -o test_select test_select.c

 *   test_select

 *

 * Roy Fielding, 1996

 */

#include <stdio.h>

#include <stdlib.h>

#include <sys/time.h>

int main (void)

{

    int srv;

    long waittime = 4096;

    struct timeval tv;

    printf("Start\n");

    while ((waittime > 0) && (waittime < 3000000)) {

        printf("%d\n", waittime);

        tv.tv_sec  = waittime/1000000;

        tv.tv_usec = waittime%1000000;

        waittime <<= 1;

        srv = select(0, NULL, NULL, NULL, &tv;;

    }

    printf("End\n");

    exit(0);

}