102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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#include "expat.h"
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static void
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usage(const char *prog, int rc)
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{
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fprintf(stderr,
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"usage: %s [-n] filename bufferSize nr_of_loops\n", prog);
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exit(rc);
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}
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int main (int argc, char *argv[])
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{
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XML_Parser parser;
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char *XMLBuf, *XMLBufEnd, *XMLBufPtr;
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FILE *fd;
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struct stat fileAttr;
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int nrOfLoops, bufferSize, fileSize, i, isFinal;
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int j = 0, ns = 0;
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clock_t tstart, tend;
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double cpuTime = 0.0;
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if (argc > 1) {
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if (argv[1][0] == '-') {
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if (argv[1][1] == 'n' && argv[1][2] == '\0') {
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ns = 1;
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j = 1;
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}
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else
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usage(argv[0], 1);
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}
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}
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if (argc != j + 4)
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usage(argv[0], 1);
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if (stat (argv[j + 1], &fileAttr) != 0) {
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fprintf (stderr, "could not access file '%s'\n", argv[j + 1]);
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return 2;
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}
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fd = fopen (argv[j + 1], "r");
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if (!fd) {
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fprintf (stderr, "could not open file '%s'\n", argv[j + 1]);
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exit(2);
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}
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bufferSize = atoi (argv[j + 2]);
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nrOfLoops = atoi (argv[j + 3]);
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if (bufferSize <= 0 || nrOfLoops <= 0) {
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fprintf (stderr,
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"buffer size and nr of loops must be greater than zero.\n");
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exit(3);
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}
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XMLBuf = malloc (fileAttr.st_size);
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fileSize = fread (XMLBuf, sizeof (char), fileAttr.st_size, fd);
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fclose (fd);
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i = 0;
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XMLBufEnd = XMLBuf + fileSize;
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while (i < nrOfLoops) {
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XMLBufPtr = XMLBuf;
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isFinal = 0;
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if (ns)
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parser = XML_ParserCreateNS(NULL, '!');
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else
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parser = XML_ParserCreate(NULL);
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tstart = clock();
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do {
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int parseBufferSize = XMLBufEnd - XMLBufPtr;
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if (parseBufferSize <= bufferSize)
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isFinal = 1;
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else
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parseBufferSize = bufferSize;
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if (!XML_Parse (parser, XMLBufPtr, parseBufferSize, isFinal)) {
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fprintf (stderr, "error '%s' at line %d character %d\n",
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XML_ErrorString (XML_GetErrorCode (parser)),
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XML_GetCurrentLineNumber (parser),
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XML_GetCurrentColumnNumber (parser));
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free (XMLBuf);
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XML_ParserFree (parser);
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exit (4);
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}
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XMLBufPtr += bufferSize;
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} while (!isFinal);
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tend = clock();
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cpuTime += ((double) (tend - tstart)) / CLOCKS_PER_SEC;
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XML_ParserFree (parser);
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i++;
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}
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free (XMLBuf);
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printf ("%d loops, with buffer size %d. Average time per loop: %f\n",
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nrOfLoops, bufferSize, cpuTime / (double) nrOfLoops);
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return 0;
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}
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