perf tools: Introduce perf_session class
[linux-2.6.git] / tools / perf / builtin-buildid-list.c
1 /*
2  * builtin-buildid-list.c
3  *
4  * Builtin buildid-list command: list buildids in perf.data
5  *
6  * Copyright (C) 2009, Red Hat Inc.
7  * Copyright (C) 2009, Arnaldo Carvalho de Melo <acme@redhat.com>
8  */
9 #include "builtin.h"
10 #include "perf.h"
11 #include "util/cache.h"
12 #include "util/data_map.h"
13 #include "util/debug.h"
14 #include "util/parse-options.h"
15 #include "util/session.h"
16 #include "util/symbol.h"
17
18 static char const *input_name = "perf.data";
19 static int force;
20
21 static const char *const buildid_list_usage[] = {
22         "perf buildid-list [<options>]",
23         NULL
24 };
25
26 static const struct option options[] = {
27         OPT_STRING('i', "input", &input_name, "file",
28                     "input file name"),
29         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
30         OPT_BOOLEAN('v', "verbose", &verbose,
31                     "be more verbose"),
32         OPT_END()
33 };
34
35 static int perf_file_section__process_buildids(struct perf_file_section *self,
36                                                int feat, int fd)
37 {
38         if (feat != HEADER_BUILD_ID)
39                 return 0;
40
41         if (lseek(fd, self->offset, SEEK_SET) < 0) {
42                 pr_warning("Failed to lseek to %Ld offset for buildids!\n",
43                            self->offset);
44                 return -1;
45         }
46
47         if (perf_header__read_build_ids(fd, self->offset, self->size)) {
48                 pr_warning("Failed to read buildids!\n");
49                 return -1;
50         }
51
52         return 0;
53 }
54
55 static int __cmd_buildid_list(void)
56 {
57         int err = -1;
58         struct perf_session *session = perf_session__new(input_name, O_RDONLY, force);
59
60         if (session == NULL)
61                 return -1;
62
63         err = perf_header__process_sections(&session->header, session->fd,
64                                          perf_file_section__process_buildids);
65         if (err >= 0)
66                 dsos__fprintf_buildid(stdout);
67
68         perf_session__delete(session);
69         return err;
70 }
71
72 int cmd_buildid_list(int argc, const char **argv, const char *prefix __used)
73 {
74         argc = parse_options(argc, argv, options, buildid_list_usage, 0);
75         setup_pager();
76         return __cmd_buildid_list();
77 }