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