benchmark.c revision 1.1.1.2 
1#include <sys/stat.h>
2#include <stdlib.h>
3#include <stdio.h>
4#include <time.h>
5#include "expat.h"
6
7#ifdef XML_LARGE_SIZE
8#define XML_FMT_INT_MOD "ll"
9#else
10#define XML_FMT_INT_MOD "l"
11#endif
12
13static void
14usage(const char *prog, int rc)
15{
16  fprintf(stderr,
17          "usage: %s [-n] filename bufferSize nr_of_loops\n", prog);
18  exit(rc);
19}
20
21int main (int argc, char *argv[])
22{
23  XML_Parser  parser;
24  char        *XMLBuf, *XMLBufEnd, *XMLBufPtr;
25  FILE        *fd;
26  struct stat fileAttr;
27  int         nrOfLoops, bufferSize, fileSize, i, isFinal;
28  int         j = 0, ns = 0;
29  clock_t     tstart, tend;
30  double      cpuTime = 0.0;
31
32  if (argc > 1) {
33    if (argv[1][0] == '-') {
34      if (argv[1][1] == 'n' && argv[1][2] == '\0') {
35        ns = 1;
36        j = 1;
37      }
38      else
39        usage(argv[0], 1);
40    }
41  }
42
43  if (argc != j + 4)
44    usage(argv[0], 1);
45
46  if (stat (argv[j + 1], &fileAttr) != 0) {
47    fprintf (stderr, "could not access file '%s'\n", argv[j + 1]);
48    return 2;
49  }
50
51  fd = fopen (argv[j + 1], "r");
52  if (!fd) {
53    fprintf (stderr, "could not open file '%s'\n", argv[j + 1]);
54    exit(2);
55  }
56
57  bufferSize = atoi (argv[j + 2]);
58  nrOfLoops = atoi (argv[j + 3]);
59  if (bufferSize <= 0 || nrOfLoops <= 0) {
60    fprintf (stderr,
61             "buffer size and nr of loops must be greater than zero.\n");
62    exit(3);
63  }
64
65  XMLBuf = malloc (fileAttr.st_size);
66  fileSize = fread (XMLBuf, sizeof (char), fileAttr.st_size, fd);
67  fclose (fd);
68
69  if (ns)
70    parser = XML_ParserCreateNS(NULL, '!');
71  else
72    parser = XML_ParserCreate(NULL);
73
74  i = 0;
75  XMLBufEnd = XMLBuf + fileSize;
76  while (i < nrOfLoops) {
77    XMLBufPtr = XMLBuf;
78    isFinal = 0;
79    tstart = clock();
80    do {
81      int parseBufferSize = XMLBufEnd - XMLBufPtr;
82      if (parseBufferSize <= bufferSize)
83        isFinal = 1;
84      else
85        parseBufferSize = bufferSize;
86      if (!XML_Parse (parser, XMLBufPtr, parseBufferSize, isFinal)) {
87        fprintf (stderr, "error '%s' at line %" XML_FMT_INT_MOD \
88                     "u character %" XML_FMT_INT_MOD "u\n",
89                 XML_ErrorString (XML_GetErrorCode (parser)),
90                 XML_GetCurrentLineNumber (parser),
91                 XML_GetCurrentColumnNumber (parser));
92        free (XMLBuf);
93        XML_ParserFree (parser);
94        exit (4);
95      }
96      XMLBufPtr += bufferSize;
97    } while (!isFinal);
98    tend = clock();
99    cpuTime += ((double) (tend - tstart)) / CLOCKS_PER_SEC;
100    XML_ParserReset(parser, NULL);
101    i++;
102  }
103
104  XML_ParserFree (parser);
105  free (XMLBuf);
106
107  printf ("%d loops, with buffer size %d. Average time per loop: %f\n",
108          nrOfLoops, bufferSize, cpuTime / (double) nrOfLoops);
109  return 0;
110}
111