src/tests/system/kernel/path_resolution_test.cpp

   1 /*
   2  * Copyright 2008, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6 #include <stdio.h>
   7 #include <sys/stat.h>
   8
   9 #include <OS.h>
  10
  11
  12 static void
  13 time_lstat(const char* path)
  14 {
  15         printf("%-60s ...", path);
  16         fflush(stdout);
  17         bigtime_t startTime = system_time();
  18
  19         static const int32 iterations = 10000;
  20         for (int32 i = 0; i < iterations; i++) {
  21                 struct stat st;
  22                 lstat(path, &st);
  23         }
  24
  25         bigtime_t totalTime = system_time() - startTime;
  26         printf(" %5.3f us/call\n", (double)totalTime / iterations);
  27 }
  28
  29
  30 int
  31 main()
  32 {
  33         const char* const paths[] = {
  34                 "/",
  35                 "/boot",
  36                 "/boot/develop",
  37                 "/boot/develop/headers",
  38                 "/boot/develop/headers/posix",
  39                 "/boot/develop/headers/posix/sys",
  40                 "/boot/develop/headers/posix/sys/stat.h",
  41                 NULL
  42         };
  43
  44         for (int32 i = 0; paths[i] != NULL; i++)
  45                 time_lstat(paths[i]);
  46
  47         return 0;
  48 }