src/system/libroot/posix/sys/times.cpp

   1 /*
   2 ** Copyright 2004, Jérôme Duval, jerome.duval@free.fr.
   3 ** Copyright 2004, Axel Dörfler, axeld@pinc-software.de.
   4 ** Distributed under the terms of the MIT License.
   5 */
   6
   7 #include <OS.h>
   8
   9 #include <errno.h>
  10 #include <sys/resource.h>
  11 #include <sys/times.h>
  12
  13 #include <symbol_versioning.h>
  14
  15 #include <errno_private.h>
  16 #include <time_private.h>
  17 #include <times_private.h>
  18
  19
  20 static inline clock_t
  21 times_common(struct tms* buffer, bigtime_t microSecondsPerClock)
  22 {
  23         team_usage_info info;
  24         status_t err;
  25
  26         if ((err = get_team_usage_info(B_CURRENT_TEAM, RUSAGE_SELF, &info))
  27                         != B_OK) {
  28                 __set_errno(err);
  29                 return -1;
  30         }
  31
  32         buffer->tms_utime = info.user_time / microSecondsPerClock;
  33         buffer->tms_stime = info.kernel_time / microSecondsPerClock;
  34
  35         if ((err = get_team_usage_info(B_CURRENT_TEAM, RUSAGE_CHILDREN, &info))
  36                         != B_OK) {
  37                 __set_errno(err);
  38                 return -1;
  39         }
  40
  41         buffer->tms_cutime = info.user_time / microSecondsPerClock;
  42         buffer->tms_cstime = info.kernel_time / microSecondsPerClock;
  43
  44         return system_time() / microSecondsPerClock;
  45 }
  46
  47
  48 clock_t
  49 __times_beos(struct tms* buffer)
  50 {
  51         return times_common(buffer, MICROSECONDS_PER_CLOCK_TICK_BEOS);
  52 }
  53
  54
  55 clock_t
  56 __times(struct tms* buffer)
  57 {
  58         return times_common(buffer, MICROSECONDS_PER_CLOCK_TICK);
  59 }
  60
  61
  62 DEFINE_LIBROOT_KERNEL_SYMBOL_VERSION("__times_beos", "times@", "BASE");
  63
  64 DEFINE_LIBROOT_KERNEL_SYMBOL_VERSION("__times", "times@@", "1_ALPHA4");