68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
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/*
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* This file is part of libc_utils.
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*
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* libc_utils is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* libc_utils is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with libc_utils; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* libc_utils is being developed at the Max-Planck-Institut fuer Astrophysik
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* and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
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* (DLR).
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*/
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/*
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* Functionality for measuring memory consumption
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*
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* Copyright (C) 2012 Max-Planck-Society
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* Author: Martin Reinecke
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*/
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#include <stdio.h>
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#include <string.h>
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#include "memusage.h"
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double residentSetSize(void)
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{
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FILE *statm = fopen("/proc/self/statm","r");
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double res;
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if (!statm) return -1.0;
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fscanf(statm,"%*f %lf",&res);
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fclose(statm);
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return (res*4096);
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}
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double VmHWM(void)
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{
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char word[1024];
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FILE *f = fopen("/proc/self/status", "r");
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double res;
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if (!f) return -1.0;
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while(1)
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{
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if (fscanf (f,"%1023s",word)<0)
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{ fclose(f); return -1.0; }
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if (!strncmp(word, "VmHWM:", 6))
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{
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fscanf(f,"%lf",&res);
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fscanf(f,"%2s",word);
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if (strncmp(word, "kB", 2))
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{ fclose(f); return -1.0; }
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res *=1024;
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fclose(f);
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return res;
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}
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}
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}
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