Commit | Line | Data |
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25763b3c | 1 | // SPDX-License-Identifier: GPL-2.0-only |
9811e353 | 2 | /* Copyright (c) 2015 PLUMgrid, http://plumgrid.com |
9811e353 AS |
3 | */ |
4 | #include <stdio.h> | |
5 | #include <stdlib.h> | |
6 | #include <signal.h> | |
7 | #include <unistd.h> | |
8 | #include <stdbool.h> | |
9 | #include <string.h> | |
10 | #include <time.h> | |
11 | #include <linux/bpf.h> | |
55de1703 JDB |
12 | #include <sys/resource.h> |
13 | ||
2bf3e2ef | 14 | #include <bpf/bpf.h> |
9811e353 AS |
15 | #include "bpf_load.h" |
16 | ||
17 | struct pair { | |
18 | long long val; | |
19 | __u64 ip; | |
20 | }; | |
21 | ||
22 | static __u64 time_get_ns(void) | |
23 | { | |
24 | struct timespec ts; | |
25 | ||
26 | clock_gettime(CLOCK_MONOTONIC, &ts); | |
27 | return ts.tv_sec * 1000000000ull + ts.tv_nsec; | |
28 | } | |
29 | ||
30 | static void print_old_objects(int fd) | |
31 | { | |
32 | long long val = time_get_ns(); | |
33 | __u64 key, next_key; | |
34 | struct pair v; | |
35 | ||
36 | key = write(1, "\e[1;1H\e[2J", 12); /* clear screen */ | |
37 | ||
38 | key = -1; | |
d40fc181 JS |
39 | while (bpf_map_get_next_key(map_fd[0], &key, &next_key) == 0) { |
40 | bpf_map_lookup_elem(map_fd[0], &next_key, &v); | |
9811e353 AS |
41 | key = next_key; |
42 | if (val - v.val < 1000000000ll) | |
43 | /* object was allocated more then 1 sec ago */ | |
44 | continue; | |
45 | printf("obj 0x%llx is %2lldsec old was allocated at ip %llx\n", | |
46 | next_key, (val - v.val) / 1000000000ll, v.ip); | |
47 | } | |
48 | } | |
49 | ||
50 | int main(int ac, char **argv) | |
51 | { | |
55de1703 | 52 | struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY}; |
9811e353 AS |
53 | char filename[256]; |
54 | int i; | |
55 | ||
56 | snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); | |
57 | ||
55de1703 JDB |
58 | if (setrlimit(RLIMIT_MEMLOCK, &r)) { |
59 | perror("setrlimit(RLIMIT_MEMLOCK, RLIM_INFINITY)"); | |
60 | return 1; | |
61 | } | |
62 | ||
9811e353 AS |
63 | if (load_bpf_file(filename)) { |
64 | printf("%s", bpf_log_buf); | |
65 | return 1; | |
66 | } | |
67 | ||
68 | for (i = 0; ; i++) { | |
69 | print_old_objects(map_fd[1]); | |
70 | sleep(1); | |
71 | } | |
72 | ||
73 | return 0; | |
74 | } |