1 /*
   2  * Copyright (C) 2018 Oracle.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt
  16  */
  17 
  18 #include "smatch.h"

  19 #include <unistd.h>

  20 
  21 static int my_id;

  22 
  23 static unsigned long max_size;
  24 
  25 unsigned long get_mem_kb(void)
  26 {
  27         FILE *file;
  28         char buf[1024];
  29         unsigned long size;
  30 
  31         file = fopen("/proc/self/statm", "r");
  32         if (!file)
  33                 return 0;
  34         fread(buf, 1, sizeof(buf), file);
  35         fclose(file);


  36 
  37         size = strtoul(buf, NULL, 10);
  38         size = size * sysconf(_SC_PAGESIZE) / 1024;
  39         return size;


  40 }
  41 
  42 static void match_end_func(struct symbol *sym)
  43 {
  44         unsigned long size;
  45 
  46         if (option_mem) {
  47                 size = get_mem_kb();
  48                 if (size > max_size)
  49                         max_size = size;
  50         }
  51 }
  52 
  53 unsigned long get_max_memory(void)
  54 {
  55         return max_size;
  56 }
  57 
  58 void register_mem_tracker(int id)
  59 {

   1 /*
   2  * Copyright (C) 2018 Oracle.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt
  16  */
  17 
  18 #include "smatch.h"
  19 #include <fcntl.h>
  20 #include <unistd.h>
  21 #include <sys/procfs.h>
  22 
  23 static int my_id;
  24 static int my_fd = -2;
  25 
  26 static unsigned long max_size;
  27 
  28 unsigned long get_mem_kb(void)
  29 {
  30         prpsinfo_t pbuf;


  31 
  32         if (my_fd == -2) {
  33                 /* Do not repeatedly attempt this if it fails. */
  34                 my_fd = open("/proc/self/psinfo", O_RDONLY);
  35         }
  36         if (my_fd == -1) {
  37                 return (0);
  38         }
  39 
  40         if (pread(my_fd, &pbuf, sizeof (pbuf), 0) != sizeof (pbuf)) {
  41                 return (0);
  42         }
  43 
  44         return (pbuf.pr_rssize);
  45 }
  46 
  47 static void match_end_func(struct symbol *sym)
  48 {
  49         unsigned long size;
  50 
  51         if (option_mem) {
  52                 size = get_mem_kb();
  53                 if (size > max_size)
  54                         max_size = size;
  55         }
  56 }
  57 
  58 unsigned long get_max_memory(void)
  59 {
  60         return max_size;
  61 }
  62 
  63 void register_mem_tracker(int id)
  64 {