cmd_list.cpp revision 9759e1b1ce76185aa539aeea2fb1cbd8382156e7 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <stdio.h>
18#include <string>
19#include <vector>
20
21#include <base/logging.h>
22
23#include "command.h"
24#include "event_type.h"
25#include "perf_event.h"
26
27static void PrintEventTypesOfType(uint32_t type, const char* type_name,
28                                  const std::vector<const EventType>& event_types) {
29  printf("List of %s:\n", type_name);
30  for (auto& event_type : event_types) {
31    if (event_type.type == type && event_type.IsSupportedByKernel()) {
32      printf("  %s\n", event_type.name);
33    }
34  }
35  printf("\n");
36}
37
38class ListCommand : public Command {
39 public:
40  ListCommand()
41      : Command("list", "list all available perf events",
42                "Usage: simpleperf list\n"
43                "    List all available perf events on this machine.\n") {
44  }
45
46  bool Run(const std::vector<std::string>& args) override;
47};
48
49bool ListCommand::Run(const std::vector<std::string>& args) {
50  if (args.size() != 1) {
51    LOG(ERROR) << "malformed command line: list subcommand needs no argument";
52    LOG(ERROR) << "try using \"help list\"";
53    return false;
54  }
55  auto& event_types = EventTypeFactory::GetAllEventTypes();
56
57  PrintEventTypesOfType(PERF_TYPE_HARDWARE, "hardware events", event_types);
58  PrintEventTypesOfType(PERF_TYPE_SOFTWARE, "software events", event_types);
59  PrintEventTypesOfType(PERF_TYPE_HW_CACHE, "hw-cache events", event_types);
60  return true;
61}
62
63ListCommand list_command;
64