- added regex performance profiler

1 files changed, 85 insertions, 0 deletions

diff --git a/src/regex/perf-regex.c b/src/regex/perf-regex.c
new file mode 100644
index 000000000..72da6f270
--- /dev/null
+++ b/src/regex/perf-regex.c
@@ -0,0 +1,85 @@
+/*
+     This file is part of GNUnet.
+     (C) 2012 Christian Grothoff (and other contributing authors)
+
+     GNUnet is free software; you can redistribute it and/or modify
+     it under the terms of the GNU General Public License as published
+     by the Free Software Foundation; either version 3, or (at your
+     option) any later version.
+
+     GNUnet is distributed in the hope that it will be useful, but
+     WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+
+/**
+ * @file regex/prof-regex.c
+ * @brief Test how long it takes to create a automaton from a string regex.
+ * @author Bartlomiej Polot
+ */
+#include <regex.h>
+#include <time.h>
+#include "platform.h"
+#include "gnunet_regex_lib.h"
+
+static const char *exe;
+
+static void
+usage(void)
+{
+  fprintf (stderr, "Usage: %s REGEX_FILE COMPRESSION\n", exe);
+}
+
+/**
+ * The main function to obtain peer information.
+ *
+ * @param argc number of arguments from the command line
+ * @param argv command line arguments
+ * @return 0 ok, 1 on error
+ */
+int
+main (int argc, char *const *argv)
+{
+  FILE *f;
+  struct GNUNET_REGEX_Automaton* dfa;
+  long size;
+  char *regex;
+  int compression;
+
+  exe = argv[0];
+  if (3 != argc)
+  {
+    usage();
+    return 1;
+  }
+  f = fopen (argv[1], "r");
+  if (NULL == f)
+  {
+    fprintf (stderr, "Can't open file %s\n", argv[1]);
+    usage();
+    return 2;
+  }
+  fseek (f, 0, SEEK_END);
+  size = ftell (f);
+  fseek (f, 0, SEEK_SET);
+  regex = GNUNET_malloc (size);
+  if (fread (regex, sizeof(char), size, f) != size)
+  {
+    fprintf (stderr, "Can't read file %s\n", argv[1]);
+    usage();
+    return 3;
+  }
+  compression = atoi (argv[2]);
+  dfa = GNUNET_REGEX_construct_dfa (regex, size, compression);
+  GNUNET_REGEX_automaton_destroy (dfa);
+  GNUNET_free (regex);
+  return 0;
+}
+
+/* end of prof-regex.c */