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 #ifdef XML_LARGE_SIZE
   8 #define XML_FMT_INT_MOD "ll"
   9 #else
  10 #define XML_FMT_INT_MOD "l"
  11 #endif
  12
  13 static void
  14 usage(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
  21 #ifdef AMIGA_SHARED_LIB
  22 #include <proto/expat.h>
  23 int
  24 amiga_main(int argc, char *argv[])
  25 #else
  26 int main (int argc, char *argv[])
  27 #endif
  28 {
  29   XML_Parser  parser;
  30   char        *XMLBuf, *XMLBufEnd, *XMLBufPtr;
  31   FILE        *fd;
  32   struct stat fileAttr;
  33   int         nrOfLoops, bufferSize, fileSize, i, isFinal;
  34   int         j = 0, ns = 0;
  35   clock_t     tstart, tend;
  36   double      cpuTime = 0.0;
  37
  38   if (argc > 1) {
  39     if (argv[1][0] == '-') {
  40       if (argv[1][1] == 'n' && argv[1][2] == '\0') {
  41         ns = 1;
  42         j = 1;
  43       }
  44       else
  45         usage(argv[0], 1);
  46     }
  47   }
  48
  49   if (argc != j + 4)
  50     usage(argv[0], 1);
  51
  52   if (stat (argv[j + 1], &fileAttr) != 0) {
  53     fprintf (stderr, "could not access file '%s'\n", argv[j + 1]);
  54     return 2;
  55   }
  56
  57   fd = fopen (argv[j + 1], "r");
  58   if (!fd) {
  59     fprintf (stderr, "could not open file '%s'\n", argv[j + 1]);
  60     exit(2);
  61   }
  62
  63   bufferSize = atoi (argv[j + 2]);
  64   nrOfLoops = atoi (argv[j + 3]);
  65   if (bufferSize <= 0 || nrOfLoops <= 0) {
  66     fprintf (stderr,
  67              "buffer size and nr of loops must be greater than zero.\n");
  68     exit(3);
  69   }
  70
  71   XMLBuf = malloc (fileAttr.st_size);
  72   fileSize = fread (XMLBuf, sizeof (char), fileAttr.st_size, fd);
  73   fclose (fd);
  74
  75   if (ns)
  76     parser = XML_ParserCreateNS(NULL, '!');
  77   else
  78     parser = XML_ParserCreate(NULL);
  79
  80   i = 0;
  81   XMLBufEnd = XMLBuf + fileSize;
  82   while (i < nrOfLoops) {
  83     XMLBufPtr = XMLBuf;
  84     isFinal = 0;
  85     tstart = clock();
  86     do {
  87       int parseBufferSize = XMLBufEnd - XMLBufPtr;
  88       if (parseBufferSize <= bufferSize)
  89         isFinal = 1;
  90       else
  91         parseBufferSize = bufferSize;
  92       if (!XML_Parse (parser, XMLBufPtr, parseBufferSize, isFinal)) {
  93         fprintf (stderr, "error '%s' at line %" XML_FMT_INT_MOD \
  94                      "u character %" XML_FMT_INT_MOD "u\n",
  95                  XML_ErrorString (XML_GetErrorCode (parser)),
  96                  XML_GetCurrentLineNumber (parser),
  97                  XML_GetCurrentColumnNumber (parser));
  98         free (XMLBuf);
  99         XML_ParserFree (parser);
 100         exit (4);
 101       }
 102       XMLBufPtr += bufferSize;
 103     } while (!isFinal);
 104     tend = clock();
 105     cpuTime += ((double) (tend - tstart)) / CLOCKS_PER_SEC;
 106     XML_ParserReset(parser, NULL);
 107     i++;
 108   }
 109
 110   XML_ParserFree (parser);
 111   free (XMLBuf);
 112
 113   printf ("%d loops, with buffer size %d. Average time per loop: %f\n",
 114           nrOfLoops, bufferSize, cpuTime / (double) nrOfLoops);
 115   return 0;
 116 }