1 files changed, 104 insertions, 0 deletions
diff --git a/tests/performance/patriciasearch.c b/tests/performance/patriciasearch.c
new file mode 100644
index 000000000..03736769c
--- /dev/null
+++ b/tests/performance/patriciasearch.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2011-22 - ntop.org
+ *
+ * nDPI is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * nDPI 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with nDPI.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <assert.h>
+#include <math.h>
+
+#include "ndpi_api.h"
+
+u_int64_t timeval2usec(const struct timeval *tv) {
+  return(tv->tv_sec*1000000+tv->tv_usec);
+}
+
+float tdiff2sec(const struct timeval *begin, const struct timeval *end) {
+  u_int64_t b = timeval2usec(begin);
+  u_int64_t e = timeval2usec(end);
+  u_int64_t diff = e - b;
+  
+  return((float)diff / 1000000.);
+}
+
+
+int main(int argc, char *argv[]) {
+  const char* top_file = "blacklist-ip.txt";
+  FILE *fd = fopen(top_file, "r");
+  ndpi_patricia_tree_t *p_v4;
+  char * line = NULL;
+  size_t len = 0;
+  u_int32_t num = 0, num_search = 100, i;
+  ssize_t read;
+  struct timeval search, begin, end;
+  u_int64_t tdiff;
+  ndpi_prefix_t prefix;
+  struct in_addr a;
+  u_int16_t maxbits = 32; /* use 128 for IPv6 */   
+  
+  if(fd == NULL) {
+    printf("Unable to open file %s\n", top_file);
+    return(-1);
+  }
+
+  assert(p_v4 = ndpi_patricia_new(32));
+
+  printf("Building the patricia tree...\n");
+
+  gettimeofday(&begin, NULL);
+  
+  while ((read = getline(&line, &len, fd)) != -1) {
+    ndpi_patricia_node_t *node;
+    u_int len = strlen(line);
+      
+    line[len] = '\0'; /* Remove trailer \n */
+
+    a.s_addr = inet_addr(line);
+    ndpi_fill_prefix_v4(&prefix, &a, 32, maxbits);
+    assert(ndpi_patricia_lookup(p_v4, &prefix) != NULL /* node added */);
+    num++;
+  }
+  
+  fclose(fd);
+
+  gettimeofday(&search, NULL);
+  
+  printf("Patricia tree (IPv4) with %u IP prefixes built successfully in %.2f sec [%.1f MB]\n",
+	 num, tdiff2sec(&begin, &search),
+	 (float)ndpi_get_tot_allocated_memory()/(float)(1024*1024));
+
+  gettimeofday(&search, NULL);
+
+#if !defined(SEARCH_LAST_IP_ADDED)
+  /* Nothing to do */
+#else
+  a.s_addr = inet_addr("1.2.3.4");
+  ndpi_fill_prefix_v4(&prefix, &a, 32, maxbits);
+#endif
+  
+  for(i=0; i<num_search; i++)
+    assert(ndpi_patricia_search_best(p_v4, &prefix));
+  gettimeofday(&end, NULL);
+  
+  printf("String searched in %.2f usec\n",
+	 (float)(timeval2usec(&end) - timeval2usec(&search))/(float)num_search);
+  
+  ndpi_patricia_destroy(p_v4, NULL);
+
+  return(0);
+}