gprofng/src/Sample.cc

   1 /* Copyright (C) 2021 Free Software Foundation, Inc.
   2    Contributed by Oracle.
   3
   4    This file is part of GNU Binutils.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3, or (at your option)
   9    any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20
  21 #include "config.h"
  22 #include <assert.h>
  23 #include "Sample.h"
  24 #include "util.h"
  25 #include "Exp_Layout.h"
  26
  27 Sample::Sample (int num)
  28 {
  29   number = num;
  30   prusage = NULL;
  31   start_time = end_time = 0;
  32   start_label = end_label = NULL;
  33   validated = false;
  34 }
  35
  36 Sample::~Sample ()
  37 {
  38   delete prusage;
  39   free (start_label);
  40   free (end_label);
  41 }
  42
  43 PrUsage *
  44 Sample::get_usage ()
  45 {
  46   if (validated == false)
  47     {
  48       validate_usage ();
  49       validated = true;
  50     }
  51   return prusage;
  52 }
  53
  54 void
  55 Sample::validate_usage ()
  56 {
  57   if (prusage == NULL || validated)
  58     return;
  59   validated = true;
  60
  61   // Make sure that none of the times are negative, force to zero if so
  62   if (prusage->pr_utime < 0)
  63     prusage->pr_utime = 0;
  64   if (prusage->pr_stime < 0)
  65     prusage->pr_stime = 0;
  66   if (prusage->pr_ttime < 0)
  67     prusage->pr_ttime = 0;
  68   if (prusage->pr_tftime < 0)
  69     prusage->pr_tftime = 0;
  70   if (prusage->pr_dftime < 0)
  71     prusage->pr_dftime = 0;
  72   if (prusage->pr_kftime < 0)
  73     prusage->pr_kftime = 0;
  74   if (prusage->pr_ltime < 0)
  75     prusage->pr_ltime = 0;
  76   if (prusage->pr_slptime < 0)
  77     prusage->pr_slptime = 0;
  78   if (prusage->pr_wtime < 0)
  79     prusage->pr_wtime = 0;
  80   if (prusage->pr_stoptime < 0)
  81     prusage->pr_stoptime = 0;
  82   if (prusage->pr_rtime < 0)
  83     prusage->pr_rtime = 0;
  84
  85   // Now make sure that the sum of states is >= prusage->pr_rtime
  86   hrtime_t sum = prusage->pr_utime + prusage->pr_stime + prusage->pr_ttime
  87           + prusage->pr_tftime + prusage->pr_dftime + prusage->pr_kftime
  88           + prusage->pr_ltime + prusage->pr_slptime + prusage->pr_wtime
  89           + prusage->pr_stoptime;
  90
  91   sum = sum - prusage->pr_rtime;
  92   if (sum < 0)// increment sleep time to make it match
  93     prusage->pr_slptime = prusage->pr_slptime - sum;
  94 }