| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <stdio.h> |
| #include <map> |
| #include <string> |
| #include <vector> |
| |
| #include <android-base/logging.h> |
| |
| #include "command.h" |
| #include "environment.h" |
| #include "event_attr.h" |
| #include "event_fd.h" |
| #include "event_type.h" |
| |
| static void PrintEventTypesOfType(uint32_t type, const std::string& type_name, |
| const std::vector<EventType>& event_types) { |
| printf("List of %s:\n", type_name.c_str()); |
| for (auto& event_type : event_types) { |
| if (event_type.type == type) { |
| perf_event_attr attr = CreateDefaultPerfEventAttr(event_type); |
| // Exclude kernel to list supported events even when |
| // /proc/sys/kernel/perf_event_paranoid is 2. |
| attr.exclude_kernel = 1; |
| if (IsEventAttrSupportedByKernel(attr)) { |
| printf(" %s\n", event_type.name.c_str()); |
| } |
| } |
| } |
| printf("\n"); |
| } |
| |
| class ListCommand : public Command { |
| public: |
| ListCommand() |
| : Command("list", "list available event types", |
| "Usage: simpleperf list [hw|sw|cache|tracepoint]\n" |
| " List all available perf events on this machine.\n") { |
| } |
| |
| bool Run(const std::vector<std::string>& args) override; |
| }; |
| |
| bool ListCommand::Run(const std::vector<std::string>& args) { |
| if (!CheckPerfEventLimit()) { |
| return false; |
| } |
| |
| static std::map<std::string, std::pair<int, std::string>> type_map = { |
| {"hw", {PERF_TYPE_HARDWARE, "hardware events"}}, |
| {"sw", {PERF_TYPE_SOFTWARE, "software events"}}, |
| {"cache", {PERF_TYPE_HW_CACHE, "hw-cache events"}}, |
| {"tracepoint", {PERF_TYPE_TRACEPOINT, "tracepoint events"}}, |
| }; |
| |
| std::vector<std::string> names; |
| if (args.empty()) { |
| for (auto& item : type_map) { |
| names.push_back(item.first); |
| } |
| } else { |
| for (auto& arg : args) { |
| if (type_map.find(arg) != type_map.end()) { |
| names.push_back(arg); |
| } else { |
| LOG(ERROR) << "unknown event type category: " << arg << ", try using \"help list\""; |
| return false; |
| } |
| } |
| } |
| |
| auto& event_types = GetAllEventTypes(); |
| |
| for (auto& name : names) { |
| auto it = type_map.find(name); |
| PrintEventTypesOfType(it->second.first, it->second.second, event_types); |
| } |
| return true; |
| } |
| |
| void RegisterListCommand() { |
| RegisterCommand("list", [] { return std::unique_ptr<Command>(new ListCommand); }); |
| } |