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Commit | Line | Data |
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718e3744 | 1 | /* |
b249c083 | 2 | * Memory and dynamic module VTY routine |
718e3744 | 3 | * |
b249c083 DL |
4 | * Copyright (C) 1998 Kunihiro Ishiguro |
5 | * Copyright (C) 2016-2017 David Lamparter for NetDEF, Inc. | |
718e3744 | 6 | * |
b249c083 DL |
7 | * This program 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 Free | |
9 | * Software Foundation; either version 2 of the License, or (at your option) | |
10 | * any later version. | |
718e3744 | 11 | * |
b249c083 DL |
12 | * This program is distributed in the hope that it will be useful, but WITHOUT |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
718e3744 | 16 | * |
b249c083 DL |
17 | * You should have received a copy of the GNU General Public License along with |
18 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple | |
19 | * Place, Suite 330, Boston, MA 02111-1307 USA | |
718e3744 | 20 | */ |
21 | ||
22 | #include <zebra.h> | |
d09552d0 | 23 | /* malloc.h is generally obsolete, however GNU Libc mallinfo wants it. */ |
24f5e2fc | 24 | #if (defined(GNU_LINUX) && defined(HAVE_MALLINFO)) |
41be32bf | 25 | #include <malloc.h> |
24f5e2fc | 26 | #endif /* HAVE_MALLINFO */ |
b249c083 DL |
27 | #include <dlfcn.h> |
28 | #include <link.h> | |
718e3744 | 29 | |
30 | #include "log.h" | |
31 | #include "memory.h" | |
b249c083 | 32 | #include "module.h" |
fc7948fa | 33 | #include "memory_vty.h" |
6b0655a2 | 34 | |
718e3744 | 35 | /* Looking up memory status from vty interface. */ |
36 | #include "vector.h" | |
37 | #include "vty.h" | |
38 | #include "command.h" | |
39 | ||
41be32bf | 40 | #ifdef HAVE_MALLINFO |
ac4d0be5 | 41 | static int show_memory_mallinfo(struct vty *vty) |
41be32bf | 42 | { |
ac4d0be5 | 43 | struct mallinfo minfo = mallinfo(); |
44 | char buf[MTYPE_MEMSTR_LEN]; | |
45 | ||
46 | vty_out(vty, "System allocator statistics:%s", VTY_NEWLINE); | |
47 | vty_out(vty, " Total heap allocated: %s%s", | |
48 | mtype_memstr(buf, MTYPE_MEMSTR_LEN, minfo.arena), VTY_NEWLINE); | |
49 | vty_out(vty, " Holding block headers: %s%s", | |
50 | mtype_memstr(buf, MTYPE_MEMSTR_LEN, minfo.hblkhd), VTY_NEWLINE); | |
51 | vty_out(vty, " Used small blocks: %s%s", | |
52 | mtype_memstr(buf, MTYPE_MEMSTR_LEN, minfo.usmblks), | |
53 | VTY_NEWLINE); | |
54 | vty_out(vty, " Used ordinary blocks: %s%s", | |
55 | mtype_memstr(buf, MTYPE_MEMSTR_LEN, minfo.uordblks), | |
56 | VTY_NEWLINE); | |
57 | vty_out(vty, " Free small blocks: %s%s", | |
58 | mtype_memstr(buf, MTYPE_MEMSTR_LEN, minfo.fsmblks), | |
59 | VTY_NEWLINE); | |
60 | vty_out(vty, " Free ordinary blocks: %s%s", | |
61 | mtype_memstr(buf, MTYPE_MEMSTR_LEN, minfo.fordblks), | |
62 | VTY_NEWLINE); | |
63 | vty_out(vty, " Ordinary blocks: %ld%s", | |
64 | (unsigned long)minfo.ordblks, VTY_NEWLINE); | |
65 | vty_out(vty, " Small blocks: %ld%s", | |
66 | (unsigned long)minfo.smblks, VTY_NEWLINE); | |
67 | vty_out(vty, " Holding blocks: %ld%s", | |
68 | (unsigned long)minfo.hblks, VTY_NEWLINE); | |
69 | vty_out(vty, "(see system documentation for 'mallinfo' for meaning)%s", | |
70 | VTY_NEWLINE); | |
71 | return 1; | |
41be32bf PJ |
72 | } |
73 | #endif /* HAVE_MALLINFO */ | |
74 | ||
3b4cd783 DL |
75 | static int qmem_walker(void *arg, struct memgroup *mg, struct memtype *mt) |
76 | { | |
77 | struct vty *vty = arg; | |
78 | if (!mt) | |
ac4d0be5 | 79 | vty_out(vty, "--- qmem %s ---%s", mg->name, VTY_NEWLINE); |
3b4cd783 | 80 | else { |
3694c43a DS |
81 | if (mt->n_alloc != 0) { |
82 | char size[32]; | |
83 | snprintf(size, sizeof(size), "%6zu", mt->size); | |
ac4d0be5 | 84 | vty_out(vty, "%-30s: %10zu %s%s", mt->name, |
85 | mt->n_alloc, | |
86 | mt->size == 0 ? "" | |
87 | : mt->size == SIZE_VAR | |
88 | ? "(variably sized)" | |
89 | : size, | |
90 | VTY_NEWLINE); | |
3694c43a | 91 | } |
3b4cd783 DL |
92 | } |
93 | return 0; | |
94 | } | |
95 | ||
96 | ||
0d05fa51 DS |
97 | DEFUN (show_memory, |
98 | show_memory_cmd, | |
99 | "show memory", | |
718e3744 | 100 | "Show running system information\n" |
0d05fa51 | 101 | "Memory statistics\n") |
718e3744 | 102 | { |
41be32bf | 103 | #ifdef HAVE_MALLINFO |
ac4d0be5 | 104 | show_memory_mallinfo(vty); |
41be32bf | 105 | #endif /* HAVE_MALLINFO */ |
fc7948fa | 106 | |
ac4d0be5 | 107 | qmem_walk(qmem_walker, vty); |
108 | return CMD_SUCCESS; | |
718e3744 | 109 | } |
110 | ||
b249c083 DL |
111 | DEFUN (show_modules, |
112 | show_modules_cmd, | |
113 | "show modules", | |
114 | "Show running system information\n" | |
115 | "Loaded modules\n") | |
116 | { | |
ac4d0be5 | 117 | struct frrmod_runtime *plug = frrmod_list; |
118 | ||
119 | vty_out(vty, "%-12s %-25s %s%s%s", "Module Name", "Version", | |
120 | "Description", VTY_NEWLINE, VTY_NEWLINE); | |
121 | while (plug) { | |
122 | const struct frrmod_info *i = plug->info; | |
123 | ||
124 | vty_out(vty, "%-12s %-25s %s%s", i->name, i->version, | |
125 | i->description, VTY_NEWLINE); | |
126 | if (plug->dl_handle) { | |
b249c083 | 127 | #ifdef HAVE_DLINFO_ORIGIN |
ac4d0be5 | 128 | char origin[MAXPATHLEN] = ""; |
129 | dlinfo(plug->dl_handle, RTLD_DI_ORIGIN, &origin); | |
130 | #ifdef HAVE_DLINFO_LINKMAP | |
131 | const char *name; | |
132 | struct link_map *lm = NULL; | |
133 | dlinfo(plug->dl_handle, RTLD_DI_LINKMAP, &lm); | |
134 | if (lm) { | |
135 | name = strrchr(lm->l_name, '/'); | |
136 | name = name ? name + 1 : lm->l_name; | |
137 | vty_out(vty, "\tfrom: %s/%s%s", origin, name, | |
138 | VTY_NEWLINE); | |
139 | } | |
140 | #else | |
141 | vty_out(vty, "\tfrom: %s %s", origin, plug->load_name, | |
142 | VTY_NEWLINE); | |
143 | #endif | |
b249c083 | 144 | #else |
ac4d0be5 | 145 | vty_out(vty, "\tfrom: %s%s", plug->load_name, |
146 | VTY_NEWLINE); | |
b249c083 | 147 | #endif |
ac4d0be5 | 148 | } |
149 | plug = plug->next; | |
150 | } | |
151 | return CMD_SUCCESS; | |
b249c083 DL |
152 | } |
153 | ||
ac4d0be5 | 154 | void memory_init(void) |
718e3744 | 155 | { |
ac4d0be5 | 156 | install_element(VIEW_NODE, &show_memory_cmd); |
157 | install_element(VIEW_NODE, &show_modules_cmd); | |
718e3744 | 158 | } |
6b0655a2 | 159 | |
41be32bf PJ |
160 | /* Stats querying from users */ |
161 | /* Return a pointer to a human friendly string describing | |
162 | * the byte count passed in. E.g: | |
163 | * "0 bytes", "2048 bytes", "110kB", "500MiB", "11GiB", etc. | |
164 | * Up to 4 significant figures will be given. | |
165 | * The pointer returned may be NULL (indicating an error) | |
166 | * or point to the given buffer, or point to static storage. | |
167 | */ | |
ac4d0be5 | 168 | const char *mtype_memstr(char *buf, size_t len, unsigned long bytes) |
41be32bf | 169 | { |
ac4d0be5 | 170 | unsigned int m, k; |
171 | ||
172 | /* easy cases */ | |
173 | if (!bytes) | |
174 | return "0 bytes"; | |
175 | if (bytes == 1) | |
176 | return "1 byte"; | |
177 | ||
178 | /* | |
179 | * When we pass the 2gb barrier mallinfo() can no longer report | |
180 | * correct data so it just does something odd... | |
181 | * Reporting like Terrabytes of data. Which makes users... | |
182 | * edgy.. yes edgy that's the term for it. | |
183 | * So let's just give up gracefully | |
184 | */ | |
185 | if (bytes > 0x7fffffff) | |
186 | return "> 2GB"; | |
187 | ||
188 | m = bytes >> 20; | |
189 | k = bytes >> 10; | |
190 | ||
191 | if (m > 10) { | |
192 | if (bytes & (1 << 19)) | |
193 | m++; | |
194 | snprintf(buf, len, "%d MiB", m); | |
195 | } else if (k > 10) { | |
196 | if (bytes & (1 << 9)) | |
197 | k++; | |
198 | snprintf(buf, len, "%d KiB", k); | |
199 | } else | |
200 | snprintf(buf, len, "%ld bytes", bytes); | |
201 | ||
202 | return buf; | |
41be32bf | 203 | } |