Pileus Git - ~andy/linux/blob - 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/debug.h"
  13 #include "util/parse-options.h"
  14 #include "util/session.h"
  15 #include "util/symbol.h"
  16
  17 static char const *input_name = "perf.data";
  18 static int force;
  19
  20 static const char *const buildid_list_usage[] = {
  21         "perf buildid-list [<options>]",
  22         NULL
  23 };
  24
  25 static const struct option options[] = {
  26         OPT_STRING('i', "input", &input_name, "file",
  27                     "input file name"),
  28         OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
  29         OPT_BOOLEAN('v', "verbose", &verbose,
  30                     "be more verbose"),
  31         OPT_END()
  32 };
  33
  34 static int perf_file_section__process_buildids(struct perf_file_section *self,
  35                                                int feat, int fd)
  36 {
  37         if (feat != HEADER_BUILD_ID)
  38                 return 0;
  39
  40         if (lseek(fd, self->offset, SEEK_SET) < 0) {
  41                 pr_warning("Failed to lseek to %Ld offset for buildids!\n",
  42                            self->offset);
  43                 return -1;
  44         }
  45
  46         if (perf_header__read_build_ids(fd, self->offset, self->size)) {
  47                 pr_warning("Failed to read buildids!\n");
  48                 return -1;
  49         }
  50
  51         return 0;
  52 }
  53
  54 static int __cmd_buildid_list(void)
  55 {
  56         int err = -1;
  57         struct perf_session *session = perf_session__new(input_name, O_RDONLY, force);
  58
  59         if (session == NULL)
  60                 return -1;
  61
  62         err = perf_header__process_sections(&session->header, session->fd,
  63                                          perf_file_section__process_buildids);
  64         if (err >= 0)
  65                 dsos__fprintf_buildid(stdout);
  66
  67         perf_session__delete(session);
  68         return err;
  69 }
  70
  71 int cmd_buildid_list(int argc, const char **argv, const char *prefix __used)
  72 {
  73         argc = parse_options(argc, argv, options, buildid_list_usage, 0);
  74         setup_pager();
  75         return __cmd_buildid_list();
  76 }