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git.proxmox.com Git - mirror_frr.git/blob - lib/memory_vty.c
2 * Memory and dynamic module VTY routine
4 * Copyright (C) 1998 Kunihiro Ishiguro
5 * Copyright (C) 2016-2017 David Lamparter for NetDEF, Inc.
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)
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
17 * You should have received a copy of the GNU General Public License along
18 * with this program; see the file COPYING; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 /* malloc.h is generally obsolete, however GNU Libc mallinfo wants it. */
24 #if (defined(GNU_LINUX) && defined(HAVE_MALLINFO))
26 #endif /* HAVE_MALLINFO */
33 #include "memory_vty.h"
35 /* Looking up memory status from vty interface. */
41 static int show_memory_mallinfo(struct vty
*vty
)
43 struct mallinfo minfo
= mallinfo();
44 char buf
[MTYPE_MEMSTR_LEN
];
46 vty_out(vty
, "System allocator statistics:\n");
47 vty_out(vty
, " Total heap allocated: %s\n",
48 mtype_memstr(buf
, MTYPE_MEMSTR_LEN
, minfo
.arena
));
49 vty_out(vty
, " Holding block headers: %s\n",
50 mtype_memstr(buf
, MTYPE_MEMSTR_LEN
, minfo
.hblkhd
));
51 vty_out(vty
, " Used small blocks: %s\n",
52 mtype_memstr(buf
, MTYPE_MEMSTR_LEN
, minfo
.usmblks
));
53 vty_out(vty
, " Used ordinary blocks: %s\n",
54 mtype_memstr(buf
, MTYPE_MEMSTR_LEN
, minfo
.uordblks
));
55 vty_out(vty
, " Free small blocks: %s\n",
56 mtype_memstr(buf
, MTYPE_MEMSTR_LEN
, minfo
.fsmblks
));
57 vty_out(vty
, " Free ordinary blocks: %s\n",
58 mtype_memstr(buf
, MTYPE_MEMSTR_LEN
, minfo
.fordblks
));
59 vty_out(vty
, " Ordinary blocks: %ld\n",
60 (unsigned long)minfo
.ordblks
);
61 vty_out(vty
, " Small blocks: %ld\n",
62 (unsigned long)minfo
.smblks
);
63 vty_out(vty
, " Holding blocks: %ld\n",
64 (unsigned long)minfo
.hblks
);
65 vty_out(vty
, "(see system documentation for 'mallinfo' for meaning)\n");
68 #endif /* HAVE_MALLINFO */
70 static int qmem_walker(void *arg
, struct memgroup
*mg
, struct memtype
*mt
)
72 struct vty
*vty
= arg
;
74 vty_out(vty
, "--- qmem %s ---\n", mg
->name
);
76 if (mt
->n_alloc
!= 0) {
78 snprintf(size
, sizeof(size
), "%6zu", mt
->size
);
79 vty_out(vty
, "%-30s: %10zu %s\n", mt
->name
,
82 : mt
->size
== SIZE_VAR
94 "Show running system information\n"
95 "Memory statistics\n")
98 show_memory_mallinfo(vty
);
99 #endif /* HAVE_MALLINFO */
101 qmem_walk(qmem_walker
, vty
);
108 "Show running system information\n"
111 struct frrmod_runtime
*plug
= frrmod_list
;
113 vty_out(vty
, "%-12s %-25s %s\n\n", "Module Name", "Version",
116 const struct frrmod_info
*i
= plug
->info
;
118 vty_out(vty
, "%-12s %-25s %s\n", i
->name
, i
->version
,
120 if (plug
->dl_handle
) {
121 #ifdef HAVE_DLINFO_ORIGIN
122 char origin
[MAXPATHLEN
] = "";
123 dlinfo(plug
->dl_handle
, RTLD_DI_ORIGIN
, &origin
);
124 #ifdef HAVE_DLINFO_LINKMAP
126 struct link_map
*lm
= NULL
;
127 dlinfo(plug
->dl_handle
, RTLD_DI_LINKMAP
, &lm
);
129 name
= strrchr(lm
->l_name
, '/');
130 name
= name
? name
+ 1 : lm
->l_name
;
131 vty_out(vty
, "\tfrom: %s/%s\n", origin
, name
);
134 vty_out(vty
, "\tfrom: %s \n", origin
, plug
->load_name
);
137 vty_out(vty
, "\tfrom: %s\n", plug
->load_name
);
145 void memory_init(void)
147 install_element(VIEW_NODE
, &show_memory_cmd
);
148 install_element(VIEW_NODE
, &show_modules_cmd
);
151 /* Stats querying from users */
152 /* Return a pointer to a human friendly string describing
153 * the byte count passed in. E.g:
154 * "0 bytes", "2048 bytes", "110kB", "500MiB", "11GiB", etc.
155 * Up to 4 significant figures will be given.
156 * The pointer returned may be NULL (indicating an error)
157 * or point to the given buffer, or point to static storage.
159 const char *mtype_memstr(char *buf
, size_t len
, unsigned long bytes
)
170 * When we pass the 2gb barrier mallinfo() can no longer report
171 * correct data so it just does something odd...
172 * Reporting like Terrabytes of data. Which makes users...
173 * edgy.. yes edgy that's the term for it.
174 * So let's just give up gracefully
176 if (bytes
> 0x7fffffff)
183 if (bytes
& (1 << 19))
185 snprintf(buf
, len
, "%d MiB", m
);
187 if (bytes
& (1 << 9))
189 snprintf(buf
, len
, "%d KiB", k
);
191 snprintf(buf
, len
, "%ld bytes", bytes
);