Quelle  builtin-data.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0
#include <linux/compiler.h>
#include <stdio.h>
#include <string.h>
#include "builtin.h"
#include "debug.h"
#include <subcmd/parse-options.h>
#include "data-convert.h"
#include "util/util.h"

typedef int (*data_cmd_fn_t)(int argc, const char **argv);

struct data_cmd {
 const char *name;
 const char *summary;
 data_cmd_fn_t fn;
};

static struct data_cmd data_cmds[];

#define for_each_cmd(cmd) \
 for (cmd = data_cmds; cmd && cmd->name; cmd++)

static const char * const data_subcommands[] = { "convert", NULL };

static const char *data_usage[] = {
 "perf data convert []",
 NULL
};

const char *to_json;
const char *to_ctf;
struct perf_data_convert_opts opts = {
 .force = false,
 .all = false,
};

const struct option data_options[] = {
  OPT_INCR('v', "verbose", &verbose, "be more verbose"),
  OPT_STRING('i', "input", &input_name, "file", "input file name"),
  OPT_STRING(0, "to-json", &to_json, NULL, "Convert to JSON format"),
#ifdef HAVE_LIBBABELTRACE_SUPPORT
  OPT_STRING(0, "to-ctf", &to_ctf, NULL, "Convert to CTF format"),
  OPT_BOOLEAN(0, "tod", &opts.tod, "Convert time to wall clock time"),
#endif
  OPT_BOOLEAN('f', "force", &opts.force, "don't complain, do it"),
  OPT_BOOLEAN(0, "all", &opts.all, "Convert all events"),
  OPT_END()
 };

static int cmd_data_convert(int argc, const char **argv)
{

 argc = parse_options(argc, argv, data_options,
        data_usage, 0);
 if (argc) {
  usage_with_options(data_usage, data_options);
  return -1;
 }

 if (to_json && to_ctf) {
  pr_err("You cannot specify both --to-ctf and --to-json.\n");
  return -1;
 }
#ifdef HAVE_LIBBABELTRACE_SUPPORT
 if (!to_json && !to_ctf) {
  pr_err("You must specify one of --to-ctf or --to-json.\n");
  return -1;
 }
#else
 if (!to_json) {
  pr_err("You must specify --to-json.\n");
 return -1;
}
#endif

 if (to_json)
  return bt_convert__perf2json(input_name, to_json, &opts);

 if (to_ctf) {
#if defined(HAVE_LIBBABELTRACE_SUPPORT) && defined(HAVE_LIBTRACEEVENT)
  return bt_convert__perf2ctf(input_name, to_ctf, &opts);
#else
  pr_err("The libbabeltrace support is not compiled in. perf should be "
         "compiled with environment variables LIBBABELTRACE=1 and "
         "LIBBABELTRACE_DIR=/path/to/libbabeltrace/.\n"
         "Check also if libbtraceevent devel files are available.\n");
  return -1;
#endif
 }

 return 0;
}

static struct data_cmd data_cmds[] = {
 { "convert", "converts data file between formats", cmd_data_convert },
 { .name = NULL, },
};

int cmd_data(int argc, const char **argv)
{
 struct data_cmd *cmd;
 const char *cmdstr;

 argc = parse_options_subcommand(argc, argv, data_options, data_subcommands, data_usage,
        PARSE_OPT_STOP_AT_NON_OPTION);

 if (!argc) {
  usage_with_options(data_usage, data_options);
  return -1;
 }

 cmdstr = argv[0];

 for_each_cmd(cmd) {
  if (strcmp(cmd->name, cmdstr))
   continue;

  return cmd->fn(argc, argv);
 }

 pr_err("Unknown command: %s\n", cmdstr);
 usage_with_options(data_usage, data_options);
 return -1;
}