Contents of /tags/mkinitrd-6_3_5/busybox/procps/free.c
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Sat Jan 29 14:06:54 2011 UTC (13 years, 8 months ago) by niro
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File size: 1837 byte(s)
Sat Jan 29 14:06:54 2011 UTC (13 years, 8 months ago) by niro
File MIME type: text/plain
File size: 1837 byte(s)
tagged 'mkinitrd-6_3_5'
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Mini free implementation for busybox |
4 | * |
5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> |
6 | * |
7 | * Licensed under the GPL version 2, see the file LICENSE in this tarball. |
8 | */ |
9 | |
10 | /* getopt not needed */ |
11 | |
12 | #include "libbb.h" |
13 | |
14 | int free_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
15 | int free_main(int argc UNUSED_PARAM, char **argv IF_NOT_DESKTOP(UNUSED_PARAM)) |
16 | { |
17 | struct sysinfo info; |
18 | unsigned mem_unit; |
19 | |
20 | #if ENABLE_DESKTOP |
21 | if (argv[1] && argv[1][0] == '-') |
22 | bb_show_usage(); |
23 | #endif |
24 | |
25 | sysinfo(&info); |
26 | |
27 | /* Kernels prior to 2.4.x will return info.mem_unit==0, so cope... */ |
28 | mem_unit = 1; |
29 | if (info.mem_unit != 0) { |
30 | mem_unit = info.mem_unit; |
31 | } |
32 | |
33 | /* Convert values to kbytes */ |
34 | if (mem_unit == 1) { |
35 | info.totalram >>= 10; |
36 | info.freeram >>= 10; |
37 | #if BB_MMU |
38 | info.totalswap >>= 10; |
39 | info.freeswap >>= 10; |
40 | #endif |
41 | info.sharedram >>= 10; |
42 | info.bufferram >>= 10; |
43 | } else { |
44 | mem_unit >>= 10; |
45 | /* TODO: Make all this stuff not overflow when mem >= 4 Tb */ |
46 | info.totalram *= mem_unit; |
47 | info.freeram *= mem_unit; |
48 | #if BB_MMU |
49 | info.totalswap *= mem_unit; |
50 | info.freeswap *= mem_unit; |
51 | #endif |
52 | info.sharedram *= mem_unit; |
53 | info.bufferram *= mem_unit; |
54 | } |
55 | |
56 | printf(" %13s%13s%13s%13s%13s\n", |
57 | "total", |
58 | "used", |
59 | "free", |
60 | "shared", "buffers" /* swap and total don't have these columns */ |
61 | ); |
62 | printf("%6s%13lu%13lu%13lu%13lu%13lu\n", "Mem:", |
63 | info.totalram, |
64 | info.totalram - info.freeram, |
65 | info.freeram, |
66 | info.sharedram, info.bufferram |
67 | ); |
68 | #if BB_MMU |
69 | printf("%6s%13lu%13lu%13lu\n", "Swap:", |
70 | info.totalswap, |
71 | info.totalswap - info.freeswap, |
72 | info.freeswap |
73 | ); |
74 | printf("%6s%13lu%13lu%13lu\n", "Total:", |
75 | info.totalram + info.totalswap, |
76 | (info.totalram - info.freeram) + (info.totalswap - info.freeswap), |
77 | info.freeram + info.freeswap |
78 | ); |
79 | #endif |
80 | return EXIT_SUCCESS; |
81 | } |