Add a macro to walk all memory allocations in a core file.
load the file in gdb:
source /path/to/frr/gdb/lib.txt
mg_walk mg_first
(gdb) mq_walk mg_first
showing active allocations in memory group libfrr
memstats: BFD info:0
memstats: Buffer:5
memstats: Buffer data:0
memstats: Host config:6
memstats: Completion item:0
memstats: Command Tokens:2585
memstats: Command Token Text:1951
memstats: Command Token Help:1951
memstats: Command Argument:0
memstats: Command Argument Name:575
memstats: Command Match Stack:0
memstats: Lexer token (temporary):0
memstats: Path Computation Algorithms:0
memstats: Distribute ctx:0
memstats: Distribute list:0
memstats: Dist-list ifname:0
memstats: Dist-list name:0
memstats: error information:0
memstats: Access List:0
memstats: Access List Str:0
memstats: Access Filter:0
memstats: RCU thread:0
<snip>
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
1st: A (struct route_node *) to the top of the route table.
2nd: The (struct route_node *) to walk up from
end
+
+define mq_walk
+ set $mg = (struct memgroup *)$arg0
+
+ while ($mg)
+ printf "showing active allocations in memory group %s\n", $mg->name
+ set $mt = (struct memtype *)$mg->types
+ while ($mt)
+ printf "memstats: %s:%zu\n", $mt->name, $mt->n_alloc
+ set $mt = $mt->next
+ end
+ set $mg = $mg->next
+ end
+
+document mg_walk
+Walk the memory data structures to show what is holding memory.
+
+Arguments:
+1st: A (struct memgroup *) where to start the walk. If you are not
+ sure where to start pass it mg_first, which is a global DS for
+ all memory allocated in FRR
+end