Line data    Source code

       1             : /* Copyright 2014 Andreas Marek, Lorenz Hüdepohl
       2             :  *
       3             :  * This file is part of ftimings.
       4             :  *
       5             :  * ftimings is free software: you can redistribute it and/or modify
       6             :  * it under the terms of the GNU Lesser General Public License as published by
       7             :  * the Free Software Foundation, either version 3 of the License, or
       8             :  * (at your option) any later version.
       9             :  *
      10             :  * ftimings is distributed in the hope that it will be useful,
      11             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      12             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      13             :  * GNU Lesser General Public License for more details.
      14             :  *
      15             :  * You should have received a copy of the GNU Lesser General Public License
      16             :  * along with ftimings.  If not, see <http://www.gnu.org/licenses/>.
      17             :  */
      18             : #include <sys/types.h>
      19             : #define _GNU_SOURCE
      20             : #include <stdio.h>
      21             : #include <unistd.h>
      22             : #include <stdlib.h>
      23             : #include <string.h>
      24             : 
      25           0 : long ftimings_highwater_mark() {
      26           0 :         long hwm = 0L;
      27             :         char line[1024];
      28           0 :         FILE* fp = NULL;
      29             : 
      30           0 :         if ((fp = fopen( "/proc/self/status", "r" )) == NULL ) {
      31           0 :                 return 0L;
      32             :         }
      33             : 
      34             :         /* Read memory size data from /proc/pid/status */
      35           0 :         while(fgets(line, sizeof line, fp)) {
      36           0 :                 if (sscanf(line, "VmHWM: %ld kB", &hwm) == 1) {
      37           0 :                         break;
      38             :                 }
      39             :         }
      40           0 :         fclose(fp);
      41             : 
      42           0 :         return hwm * 1024L;
      43             : }