Root/tools/perf/builtin-buildid-cache.c

1/*
2 * builtin-buildid-cache.c
3 *
4 * Builtin buildid-cache command: Manages build-id cache
5 *
6 * Copyright (C) 2010, Red Hat Inc.
7 * Copyright (C) 2010, Arnaldo Carvalho de Melo <acme@redhat.com>
8 */
9#include "builtin.h"
10#include "perf.h"
11#include "util/cache.h"
12#include "util/debug.h"
13#include "util/header.h"
14#include "util/parse-options.h"
15#include "util/strlist.h"
16#include "util/symbol.h"
17
18static char const *add_name_list_str, *remove_name_list_str;
19
20static const char * const buildid_cache_usage[] = {
21    "perf buildid-cache [<options>]",
22    NULL
23};
24
25static const struct option buildid_cache_options[] = {
26    OPT_STRING('a', "add", &add_name_list_str,
27           "file list", "file(s) to add"),
28    OPT_STRING('r', "remove", &remove_name_list_str, "file list",
29            "file(s) to remove"),
30    OPT_INCR('v', "verbose", &verbose, "be more verbose"),
31    OPT_END()
32};
33
34static int build_id_cache__add_file(const char *filename, const char *debugdir)
35{
36    char sbuild_id[BUILD_ID_SIZE * 2 + 1];
37    u8 build_id[BUILD_ID_SIZE];
38    int err;
39
40    if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
41        pr_debug("Couldn't read a build-id in %s\n", filename);
42        return -1;
43    }
44
45    build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
46    err = build_id_cache__add_s(sbuild_id, debugdir, filename, false);
47    if (verbose)
48        pr_info("Adding %s %s: %s\n", sbuild_id, filename,
49            err ? "FAIL" : "Ok");
50    return err;
51}
52
53static int build_id_cache__remove_file(const char *filename __used,
54                       const char *debugdir __used)
55{
56    u8 build_id[BUILD_ID_SIZE];
57    char sbuild_id[BUILD_ID_SIZE * 2 + 1];
58
59    int err;
60
61    if (filename__read_build_id(filename, &build_id, sizeof(build_id)) < 0) {
62        pr_debug("Couldn't read a build-id in %s\n", filename);
63        return -1;
64    }
65
66    build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
67    err = build_id_cache__remove_s(sbuild_id, debugdir);
68    if (verbose)
69        pr_info("Removing %s %s: %s\n", sbuild_id, filename,
70            err ? "FAIL" : "Ok");
71
72    return err;
73}
74
75static int __cmd_buildid_cache(void)
76{
77    struct strlist *list;
78    struct str_node *pos;
79    char debugdir[PATH_MAX];
80
81    snprintf(debugdir, sizeof(debugdir), "%s", buildid_dir);
82
83    if (add_name_list_str) {
84        list = strlist__new(true, add_name_list_str);
85        if (list) {
86            strlist__for_each(pos, list)
87                if (build_id_cache__add_file(pos->s, debugdir)) {
88                    if (errno == EEXIST) {
89                        pr_debug("%s already in the cache\n",
90                             pos->s);
91                        continue;
92                    }
93                    pr_warning("Couldn't add %s: %s\n",
94                           pos->s, strerror(errno));
95                }
96
97            strlist__delete(list);
98        }
99    }
100
101    if (remove_name_list_str) {
102        list = strlist__new(true, remove_name_list_str);
103        if (list) {
104            strlist__for_each(pos, list)
105                if (build_id_cache__remove_file(pos->s, debugdir)) {
106                    if (errno == ENOENT) {
107                        pr_debug("%s wasn't in the cache\n",
108                             pos->s);
109                        continue;
110                    }
111                    pr_warning("Couldn't remove %s: %s\n",
112                           pos->s, strerror(errno));
113                }
114
115            strlist__delete(list);
116        }
117    }
118
119    return 0;
120}
121
122int cmd_buildid_cache(int argc, const char **argv, const char *prefix __used)
123{
124    argc = parse_options(argc, argv, buildid_cache_options,
125                 buildid_cache_usage, 0);
126
127    if (symbol__init() < 0)
128        return -1;
129
130    setup_pager();
131    return __cmd_buildid_cache();
132}
133

Archive Download this file



interactive