tests/benchmark/benchmark.c

   1 #include <sys/stat.h>
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4 #include <time.h>
   5 #include "expat.h"
   6
   7 #if defined(__amigaos__) && defined(__USE_INLINE__)
   8 #include <proto/expat.h>
   9 #endif
  10
  11 #ifdef XML_LARGE_SIZE
  12 #define XML_FMT_INT_MOD "ll"
  13 #else
  14 #define XML_FMT_INT_MOD "l"
  15 #endif
  16
  17 static void
  18 usage(const char *prog, int rc)
  19 {
  20   fprintf(stderr,
  21           "usage: %s [-n] filename bufferSize nr_of_loops\n", prog);
  22   exit(rc);
  23 }
  24
  25 int main (int argc, char *argv[])
  26 {
  27   XML_Parser  parser;
  28   char        *XMLBuf, *XMLBufEnd, *XMLBufPtr;
  29   FILE        *fd;
  30   struct stat fileAttr;
  31   int         nrOfLoops, bufferSize, fileSize, i, isFinal;
  32   int         j = 0, ns = 0;
  33   clock_t     tstart, tend;
  34   double      cpuTime = 0.0;
  35
  36   if (argc > 1) {
  37     if (argv[1][0] == '-') {
  38       if (argv[1][1] == 'n' && argv[1][2] == '\0') {
  39         ns = 1;
  40         j = 1;
  41       }
  42       else
  43         usage(argv[0], 1);
  44     }
  45   }
  46
  47   if (argc != j + 4)
  48     usage(argv[0], 1);
  49
  50   if (stat (argv[j + 1], &fileAttr) != 0) {
  51     fprintf (stderr, "could not access file '%s'\n", argv[j + 1]);
  52     return 2;
  53   }
  54
  55   fd = fopen (argv[j + 1], "r");
  56   if (!fd) {
  57     fprintf (stderr, "could not open file '%s'\n", argv[j + 1]);
  58     exit(2);
  59   }
  60
  61   bufferSize = atoi (argv[j + 2]);
  62   nrOfLoops = atoi (argv[j + 3]);
  63   if (bufferSize <= 0 || nrOfLoops <= 0) {
  64     fprintf (stderr,
  65              "buffer size and nr of loops must be greater than zero.\n");
  66     exit(3);
  67   }
  68
  69   XMLBuf = malloc (fileAttr.st_size);
  70   fileSize = fread (XMLBuf, sizeof (char), fileAttr.st_size, fd);
  71   fclose (fd);
  72
  73   if (ns)
  74     parser = XML_ParserCreateNS(NULL, '!');
  75   else
  76     parser = XML_ParserCreate(NULL);
  77
  78   i = 0;
  79   XMLBufEnd = XMLBuf + fileSize;
  80   while (i < nrOfLoops) {
  81     XMLBufPtr = XMLBuf;
  82     isFinal = 0;
  83     tstart = clock();
  84     do {
  85       int parseBufferSize = XMLBufEnd - XMLBufPtr;
  86       if (parseBufferSize <= bufferSize)
  87         isFinal = 1;
  88       else
  89         parseBufferSize = bufferSize;
  90       if (!XML_Parse (parser, XMLBufPtr, parseBufferSize, isFinal)) {
  91         fprintf (stderr, "error '%s' at line %" XML_FMT_INT_MOD \
  92                      "u character %" XML_FMT_INT_MOD "u\n",
  93                  XML_ErrorString (XML_GetErrorCode (parser)),
  94                  XML_GetCurrentLineNumber (parser),
  95                  XML_GetCurrentColumnNumber (parser));
  96         free (XMLBuf);
  97         XML_ParserFree (parser);
  98         exit (4);
  99       }
 100       XMLBufPtr += bufferSize;
 101     } while (!isFinal);
 102     tend = clock();
 103     cpuTime += ((double) (tend - tstart)) / CLOCKS_PER_SEC;
 104     XML_ParserReset(parser, NULL);
 105     i++;
 106   }
 107
 108   XML_ParserFree (parser);
 109   free (XMLBuf);
 110
 111   printf ("%d loops, with buffer size %d. Average time per loop: %f\n",
 112           nrOfLoops, bufferSize, cpuTime / (double) nrOfLoops);
 113   return 0;
 114 }