benchmark.c revision 355604 
1/*
2                            __  __            _
3                         ___\ \/ /_ __   __ _| |_
4                        / _ \\  /| '_ \ / _` | __|
5                       |  __//  \| |_) | (_| | |_
6                        \___/_/\_\ .__/ \__,_|\__|
7                                 |_| XML parser
8
9   Copyright (c) 1997-2000 Thai Open Source Software Center Ltd
10   Copyright (c) 2000-2017 Expat development team
11   Licensed under the MIT license:
12
13   Permission is  hereby granted,  free of charge,  to any  person obtaining
14   a  copy  of  this  software   and  associated  documentation  files  (the
15   "Software"),  to  deal in  the  Software  without restriction,  including
16   without  limitation the  rights  to use,  copy,  modify, merge,  publish,
17   distribute, sublicense, and/or sell copies of the Software, and to permit
18   persons  to whom  the Software  is  furnished to  do so,  subject to  the
19   following conditions:
20
21   The above copyright  notice and this permission notice  shall be included
22   in all copies or substantial portions of the Software.
23
24   THE  SOFTWARE  IS  PROVIDED  "AS  IS",  WITHOUT  WARRANTY  OF  ANY  KIND,
25   EXPRESS  OR IMPLIED,  INCLUDING  BUT  NOT LIMITED  TO  THE WARRANTIES  OF
26   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
27   NO EVENT SHALL THE AUTHORS OR  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
28   DAMAGES OR  OTHER LIABILITY, WHETHER  IN AN  ACTION OF CONTRACT,  TORT OR
29   OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
30   USE OR OTHER DEALINGS IN THE SOFTWARE.
31*/
32
33#include <sys/stat.h>
34#include <stdlib.h>
35#include <stdio.h>
36#include <time.h>
37#include "expat.h"
38
39#ifdef XML_LARGE_SIZE
40#  define XML_FMT_INT_MOD "ll"
41#else
42#  define XML_FMT_INT_MOD "l"
43#endif
44
45#ifdef XML_UNICODE_WCHAR_T
46#  define XML_FMT_STR "ls"
47#else
48#  define XML_FMT_STR "s"
49#endif
50
51static void
52usage(const char *prog, int rc) {
53  fprintf(stderr, "usage: %s [-n] filename bufferSize nr_of_loops\n", prog);
54  exit(rc);
55}
56
57int
58main(int argc, char *argv[]) {
59  XML_Parser parser;
60  char *XMLBuf, *XMLBufEnd, *XMLBufPtr;
61  FILE *fd;
62  struct stat fileAttr;
63  int nrOfLoops, bufferSize, fileSize, i, isFinal;
64  int j = 0, ns = 0;
65  clock_t tstart, tend;
66  double cpuTime = 0.0;
67
68  if (argc > 1) {
69    if (argv[1][0] == '-') {
70      if (argv[1][1] == 'n' && argv[1][2] == '\0') {
71        ns = 1;
72        j = 1;
73      } else
74        usage(argv[0], 1);
75    }
76  }
77
78  if (argc != j + 4)
79    usage(argv[0], 1);
80
81  if (stat(argv[j + 1], &fileAttr) != 0) {
82    fprintf(stderr, "could not access file '%s'\n", argv[j + 1]);
83    return 2;
84  }
85
86  fd = fopen(argv[j + 1], "r");
87  if (! fd) {
88    fprintf(stderr, "could not open file '%s'\n", argv[j + 1]);
89    exit(2);
90  }
91
92  bufferSize = atoi(argv[j + 2]);
93  nrOfLoops = atoi(argv[j + 3]);
94  if (bufferSize <= 0 || nrOfLoops <= 0) {
95    fprintf(stderr, "buffer size and nr of loops must be greater than zero.\n");
96    exit(3);
97  }
98
99  XMLBuf = malloc(fileAttr.st_size);
100  fileSize = fread(XMLBuf, sizeof(char), fileAttr.st_size, fd);
101  fclose(fd);
102
103  if (ns)
104    parser = XML_ParserCreateNS(NULL, '!');
105  else
106    parser = XML_ParserCreate(NULL);
107
108  i = 0;
109  XMLBufEnd = XMLBuf + fileSize;
110  while (i < nrOfLoops) {
111    XMLBufPtr = XMLBuf;
112    isFinal = 0;
113    tstart = clock();
114    do {
115      int parseBufferSize = XMLBufEnd - XMLBufPtr;
116      if (parseBufferSize <= bufferSize)
117        isFinal = 1;
118      else
119        parseBufferSize = bufferSize;
120      if (! XML_Parse(parser, XMLBufPtr, parseBufferSize, isFinal)) {
121        fprintf(stderr,
122                "error '%" XML_FMT_STR "' at line %" XML_FMT_INT_MOD
123                "u character %" XML_FMT_INT_MOD "u\n",
124                XML_ErrorString(XML_GetErrorCode(parser)),
125                XML_GetCurrentLineNumber(parser),
126                XML_GetCurrentColumnNumber(parser));
127        free(XMLBuf);
128        XML_ParserFree(parser);
129        exit(4);
130      }
131      XMLBufPtr += bufferSize;
132    } while (! isFinal);
133    tend = clock();
134    cpuTime += ((double)(tend - tstart)) / CLOCKS_PER_SEC;
135    XML_ParserReset(parser, NULL);
136    i++;
137  }
138
139  XML_ParserFree(parser);
140  free(XMLBuf);
141
142  printf("%d loops, with buffer size %d. Average time per loop: %f\n",
143         nrOfLoops, bufferSize, cpuTime / (double)nrOfLoops);
144  return 0;
145}
146