1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
/* Memory usage utilities.
Copied from CADO-NFS.
This file is part of the ECM Library.
The ECM Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
The ECM Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the ECM Library; see the file COPYING.LIB. If not, see
http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
#ifndef _WIN32
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include "ecm-impl.h"
/* Returns peak memory usage, in KB
* This is the VmPeak field in the status file of /proc/pid/ dir
* This is highly non portable.
* Return -1 in case of failure.
*/
long
PeakMemusage (void)
{
pid_t pid = getpid ();
char str[1024];
char *truc;
snprintf (str, 1024, "/proc/%d/status", (int) pid);
FILE *file;
file = fopen (str, "r");
if (file == NULL)
return -1; /* for example on Mac OS X */
long mem;
for(;;)
{
truc = fgets (str, 1023, file);
if (truc == NULL)
return -1; /* for example on FreeBSD */
int ret = sscanf (str, "VmPeak: %ld", &mem);
if (ret == 1)
{
fclose (file);
return mem;
}
}
}
#else
#include <windows.h>
#include <psapi.h>
long
PeakMemusage (void)
{
PROCESS_MEMORY_COUNTERS info;
GetProcessMemoryInfo(GetCurrentProcess(), &info, sizeof(info));
return (long)(info.PeakWorkingSetSize >> 10);
}
#endif
|
