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 #ifndef SIMPLE_PERF_EVENT_H_ 18 #define SIMPLE_PERF_EVENT_H_ 19 20 #include <stdint.h> 21 #include <memory> 22 #include <string> 23 #include <vector> 24 25 // A uint32_t value far from 0 is picked, so it is unlikely to conflict with further 26 // PERF_TYPE_* events. 27 static constexpr uint32_t SIMPLEPERF_TYPE_USER_SPACE_SAMPLERS = 32768; 28 29 enum { 30 SIMPLEPERF_CONFIG_INPLACE_SAMPLER, 31 }; 32 33 // EventType represents one type of event, like cpu_cycle_event, cache_misses_event. 34 // The user knows one event type by its name, and the kernel knows one event type by its 35 // (type, config) pair. EventType connects the two representations, and tells the user if 36 // the event type is supported by the kernel. 37 38 struct EventType { EventTypeEventType39 EventType(const std::string& name, uint32_t type, uint64_t config, 40 const std::string& description, const std::string& limited_arch) 41 : name(name), type(type), config(config), description(description), 42 limited_arch(limited_arch) { 43 } 44 EventTypeEventType45 EventType() : type(0), config(0) { 46 } 47 48 std::string name; 49 uint32_t type; 50 uint64_t config; 51 std::string description; 52 std::string limited_arch; 53 }; 54 55 bool SetTracepointEventsFilePath(const std::string& filepath); 56 std::string GetTracepointEvents(); 57 const std::vector<EventType>& GetAllEventTypes(); 58 const EventType* FindEventTypeByName(const std::string& name); 59 60 struct EventTypeAndModifier { 61 std::string name; 62 EventType event_type; 63 std::string modifier; 64 bool exclude_user; 65 bool exclude_kernel; 66 bool exclude_hv; 67 bool exclude_host; 68 bool exclude_guest; 69 int precise_ip : 2; 70 EventTypeAndModifierEventTypeAndModifier71 EventTypeAndModifier() 72 : exclude_user(false), 73 exclude_kernel(false), 74 exclude_hv(false), 75 exclude_host(false), 76 exclude_guest(false), 77 precise_ip(0) { 78 } 79 }; 80 81 std::unique_ptr<EventTypeAndModifier> ParseEventType(const std::string& event_type_str); 82 83 #endif // SIMPLE_PERF_EVENT_H_ 84