| Geant4 Cross Reference |
1 // 1
2 // *******************************************
3 // * License and Disclaimer
4 // *
5 // * The Geant4 software is copyright of th
6 // * the Geant4 Collaboration. It is provided
7 // * conditions of the Geant4 Software License
8 // * LICENSE and available at http://cern.ch/
9 // * include a list of copyright holders.
10 // *
11 // * Neither the authors of this software syst
12 // * institutes,nor the agencies providing fin
13 // * work make any representation or warran
14 // * regarding this software system or assum
15 // * use. Please see the license in the file
16 // * for the full disclaimer and the limitatio
17 // *
18 // * This code implementation is the result
19 // * technical work of the GEANT4 collaboratio
20 // * By using, copying, modifying or distri
21 // * any work based on the software) you ag
22 // * use in resulting scientific publicati
23 // * acceptance of all terms of the Geant4 Sof
24 // *******************************************
25 //
26 /*
27 * MemStat.cc
28 *
29 * Created on: 4 févr. 2014
30 * Author: kara
31 */
32
33 #include "G4MemStat.hh"
34
35 #if ( defined(__MACH__) && defined(__clang__)
36 ( defined(__MACH__) && defined(__GNUC__) &
37 defined(__linux__) || defined(_AIX)
38
39 #include <unistd.h>
40
41 #endif
42
43 #include <ios>
44 #include <iostream>
45 #include <fstream>
46 #include <string>
47
48 namespace G4MemStat
49 {
50
51 using std::ios_base;
52 using std::ifstream;
53 using std::string;
54
55 MemStat MemoryUsage()
56 {
57 MemStat output;
58
59 #if ( defined(__MACH__) && defined(__clang__)
60 ( defined(__MACH__) && defined(__GNUC__) &
61 defined(__linux__) || defined(_AIX)
62
63 // 'file' stat seems to give the most reli
64 //
65 ifstream stat_stream("/proc/self/stat", io
66
67 // dummy vars for leading entries in stat
68 //
69 string pid, comm, state, ppid, pgrp, sessi
70 string tpgid, flags, minflt, cminflt, majf
71 string utime, stime, cutime, cstime, prior
72 string O, itrealvalue, starttime;
73
74 // the two fields we want
75 //
76 unsigned long vsize;
77 long rss;
78
79 stat_stream >> pid >> comm >> state >> ppi
80 >> tpgid >> flags >> minflt >> cminflt >>
81 >> stime >> cutime >> cstime >> priority >
82 >> starttime >> vsize >> rss; // don't car
83
84 stat_stream.close();
85
86 long page_size_kb = sysconf(_SC_PAGE_SIZE)
87 output.vmz = vsize / 1024.0;
88 output.mem = rss * page_size_kb;
89 #endif
90
91 return output;
92 }
93
94 std::ostream & operator<<(std::ostream &os,
95 {
96 return os << "( vmz: " << memStat.vmz << "
97 << ")";
98 }
99
100 }
101