tools/perf/builtin-data.c

   1 #include <linux/compiler.h>
   2 #include "builtin.h"
   3 #include "perf.h"
   4 #include "debug.h"
   5 #include "parse-options.h"
   6
   7 typedef int (*data_cmd_fn_t)(int argc, const char **argv, const char *prefix);
   8
   9 struct data_cmd {
  10         const char      *name;
  11         const char      *summary;
  12         data_cmd_fn_t   fn;
  13 };
  14
  15 static struct data_cmd data_cmds[];
  16
  17 #define for_each_cmd(cmd) \
  18         for (cmd = data_cmds; cmd && cmd->name; cmd++)
  19
  20 static const struct option data_options[] = {
  21         OPT_END()
  22 };
  23
  24 static const char * const data_usage[] = {
  25         "perf data [<common options>] <command> [<options>]",
  26         NULL
  27 };
  28
  29 static void print_usage(void)
  30 {
  31         struct data_cmd *cmd;
  32
  33         printf("Usage:\n");
  34         printf("\t%s\n\n", data_usage[0]);
  35         printf("\tAvailable commands:\n");
  36
  37         for_each_cmd(cmd) {
  38                 printf("\t %s\t- %s\n", cmd->name, cmd->summary);
  39         }
  40
  41         printf("\n");
  42 }
  43
  44 static struct data_cmd data_cmds[] = {
  45         { NULL },
  46 };
  47
  48 int cmd_data(int argc, const char **argv, const char *prefix)
  49 {
  50         struct data_cmd *cmd;
  51         const char *cmdstr;
  52
  53         /* No command specified. */
  54         if (argc < 2)
  55                 goto usage;
  56
  57         argc = parse_options(argc, argv, data_options, data_usage,
  58                              PARSE_OPT_STOP_AT_NON_OPTION);
  59         if (argc < 1)
  60                 goto usage;
  61
  62         cmdstr = argv[0];
  63
  64         for_each_cmd(cmd) {
  65                 if (strcmp(cmd->name, cmdstr))
  66                         continue;
  67
  68                 return cmd->fn(argc, argv, prefix);
  69         }
  70
  71         pr_err("Unknown command: %s\n", cmdstr);
  72 usage:
  73         print_usage();
  74         return -1;
  75 }