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718e3744 | 1 | /* |
2 | * Memory management routine | |
3 | * Copyright (C) 1998 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
19 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
20 | * 02111-1307, USA. | |
21 | */ | |
22 | ||
23 | #include <zebra.h> | |
d09552d0 | 24 | /* malloc.h is generally obsolete, however GNU Libc mallinfo wants it. */ |
24f5e2fc | 25 | #if (defined(GNU_LINUX) && defined(HAVE_MALLINFO)) |
41be32bf | 26 | #include <malloc.h> |
24f5e2fc | 27 | #endif /* HAVE_MALLINFO */ |
718e3744 | 28 | |
29 | #include "log.h" | |
30 | #include "memory.h" | |
fc7948fa | 31 | #include "memory_vty.h" |
6b0655a2 | 32 | |
718e3744 | 33 | /* Looking up memory status from vty interface. */ |
34 | #include "vector.h" | |
35 | #include "vty.h" | |
36 | #include "command.h" | |
37 | ||
41be32bf PJ |
38 | #ifdef HAVE_MALLINFO |
39 | static int | |
40 | show_memory_mallinfo (struct vty *vty) | |
41 | { | |
42 | struct mallinfo minfo = mallinfo(); | |
43 | char buf[MTYPE_MEMSTR_LEN]; | |
44 | ||
45 | vty_out (vty, "System allocator statistics:%s", VTY_NEWLINE); | |
46 | vty_out (vty, " Total heap allocated: %s%s", | |
47 | mtype_memstr (buf, MTYPE_MEMSTR_LEN, minfo.arena), | |
48 | VTY_NEWLINE); | |
49 | vty_out (vty, " Holding block headers: %s%s", | |
50 | mtype_memstr (buf, MTYPE_MEMSTR_LEN, minfo.hblkhd), | |
51 | VTY_NEWLINE); | |
52 | vty_out (vty, " Used small blocks: %s%s", | |
53 | mtype_memstr (buf, MTYPE_MEMSTR_LEN, minfo.usmblks), | |
54 | VTY_NEWLINE); | |
55 | vty_out (vty, " Used ordinary blocks: %s%s", | |
56 | mtype_memstr (buf, MTYPE_MEMSTR_LEN, minfo.uordblks), | |
57 | VTY_NEWLINE); | |
58 | vty_out (vty, " Free small blocks: %s%s", | |
59 | mtype_memstr (buf, MTYPE_MEMSTR_LEN, minfo.fsmblks), | |
60 | VTY_NEWLINE); | |
61 | vty_out (vty, " Free ordinary blocks: %s%s", | |
62 | mtype_memstr (buf, MTYPE_MEMSTR_LEN, minfo.fordblks), | |
63 | VTY_NEWLINE); | |
64 | vty_out (vty, " Ordinary blocks: %ld%s", | |
65 | (unsigned long)minfo.ordblks, | |
66 | VTY_NEWLINE); | |
67 | vty_out (vty, " Small blocks: %ld%s", | |
68 | (unsigned long)minfo.smblks, | |
69 | VTY_NEWLINE); | |
70 | vty_out (vty, " Holding blocks: %ld%s", | |
71 | (unsigned long)minfo.hblks, | |
72 | VTY_NEWLINE); | |
73 | vty_out (vty, "(see system documentation for 'mallinfo' for meaning)%s", | |
74 | VTY_NEWLINE); | |
75 | return 1; | |
76 | } | |
77 | #endif /* HAVE_MALLINFO */ | |
78 | ||
3b4cd783 DL |
79 | static int qmem_walker(void *arg, struct memgroup *mg, struct memtype *mt) |
80 | { | |
81 | struct vty *vty = arg; | |
82 | if (!mt) | |
83 | vty_out (vty, "--- qmem %s ---%s", mg->name, VTY_NEWLINE); | |
84 | else { | |
3694c43a DS |
85 | if (mt->n_alloc != 0) { |
86 | char size[32]; | |
87 | snprintf(size, sizeof(size), "%6zu", mt->size); | |
88 | vty_out (vty, "%-30s: %10zu %s%s", | |
89 | mt->name, mt->n_alloc, | |
90 | mt->size == 0 ? "" : | |
91 | mt->size == SIZE_VAR ? "(variably sized)" : | |
92 | size, VTY_NEWLINE); | |
93 | } | |
3b4cd783 DL |
94 | } |
95 | return 0; | |
96 | } | |
97 | ||
98 | ||
0d05fa51 DS |
99 | DEFUN (show_memory, |
100 | show_memory_cmd, | |
101 | "show memory", | |
718e3744 | 102 | "Show running system information\n" |
0d05fa51 | 103 | "Memory statistics\n") |
718e3744 | 104 | { |
41be32bf | 105 | #ifdef HAVE_MALLINFO |
7a13c923 | 106 | show_memory_mallinfo (vty); |
41be32bf | 107 | #endif /* HAVE_MALLINFO */ |
fc7948fa | 108 | |
3b4cd783 | 109 | qmem_walk(qmem_walker, vty); |
718e3744 | 110 | return CMD_SUCCESS; |
111 | } | |
112 | ||
718e3744 | 113 | void |
f858e49b | 114 | memory_init (void) |
718e3744 | 115 | { |
116 | install_element (VIEW_NODE, &show_memory_cmd); | |
718e3744 | 117 | } |
6b0655a2 | 118 | |
41be32bf PJ |
119 | /* Stats querying from users */ |
120 | /* Return a pointer to a human friendly string describing | |
121 | * the byte count passed in. E.g: | |
122 | * "0 bytes", "2048 bytes", "110kB", "500MiB", "11GiB", etc. | |
123 | * Up to 4 significant figures will be given. | |
124 | * The pointer returned may be NULL (indicating an error) | |
125 | * or point to the given buffer, or point to static storage. | |
126 | */ | |
127 | const char * | |
128 | mtype_memstr (char *buf, size_t len, unsigned long bytes) | |
129 | { | |
6896f650 DS |
130 | unsigned int m, k; |
131 | ||
41be32bf PJ |
132 | /* easy cases */ |
133 | if (!bytes) | |
134 | return "0 bytes"; | |
135 | if (bytes == 1) | |
136 | return "1 byte"; | |
6896f650 DS |
137 | |
138 | /* | |
139 | * When we pass the 2gb barrier mallinfo() can no longer report | |
140 | * correct data so it just does something odd... | |
141 | * Reporting like Terrabytes of data. Which makes users... | |
142 | * edgy.. yes edgy that's the term for it. | |
143 | * So let's just give up gracefully | |
144 | */ | |
145 | if (bytes > 0x7fffffff) | |
146 | return "> 2GB"; | |
147 | ||
41be32bf PJ |
148 | m = bytes >> 20; |
149 | k = bytes >> 10; | |
6896f650 DS |
150 | |
151 | if (m > 10) | |
41be32bf PJ |
152 | { |
153 | if (bytes & (1 << 19)) | |
154 | m++; | |
155 | snprintf (buf, len, "%d MiB", m); | |
156 | } | |
157 | else if (k > 10) | |
158 | { | |
159 | if (bytes & (1 << 9)) | |
160 | k++; | |
161 | snprintf (buf, len, "%d KiB", k); | |
162 | } | |
163 | else | |
164 | snprintf (buf, len, "%ld bytes", bytes); | |
165 | ||
166 | return buf; | |
167 | } |