curl URL decode performance tester

urldecode.c

/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) Daniel Stenberg, <[email protected]>, et al.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution. The terms
 * are also available at https://curl.se/docs/copyright.html.
 *
 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 * copies of the Software, and permit persons to whom the Software is
 * furnished to do so, under the terms of the COPYING file.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 * SPDX-License-Identifier: curl
 *
 ***************************************************************************/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <curl/curl.h>

#define BLOCKSIZE 1000000
char block[BLOCKSIZE];

int main(int argc, char **argv)
{
  struct timeval start;
  struct timeval end;
  time_t diff;
  long us;
  int laps = 10000;
  char *encoded;
  size_t encodedlen;
  int i, l;
  int count = 0;

  /* fill the block */
  for(i=0; i<BLOCKSIZE; i++)
    block[i] = i&255;

  /* URL encode */
  encoded = curl_easy_escape(NULL, block, BLOCKSIZE);
  if(!encoded)
    return 2;
  encodedlen = strlen(encoded);

  if(argc > 1)
    laps = atoi(argv[1]);

  gettimeofday(&start, NULL);

  for(l = 0; l < laps; l++) {
    int olen;
    char *decode = curl_easy_unescape(NULL, encoded, encodedlen, &olen);
    curl_free(decode);
    count++;
  }
  gettimeofday(&end, NULL);
  diff = end.tv_sec-start.tv_sec;
  us = diff * 1000000 + end.tv_usec-start.tv_usec;
  printf("%d URL decodes in %.5f secs, %.3f us/decode, %.3f decodes/sec\n",
         count, (double)us/1000000.0, (double)us/count, count / (us/1000000.0));
  return 0;
}