| /* |
| * 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. |
| */ |
| |
| #ifndef SIMPLE_PERF_EVENT_H_ |
| #define SIMPLE_PERF_EVENT_H_ |
| |
| #include <stdint.h> |
| #include <strings.h> |
| #include <memory> |
| #include <set> |
| #include <string> |
| #include <vector> |
| |
| // A uint32_t value far from 0 is picked, so it is unlikely to conflict with further |
| // PERF_TYPE_* events. |
| static constexpr uint32_t SIMPLEPERF_TYPE_USER_SPACE_SAMPLERS = 32768; |
| |
| enum { |
| SIMPLEPERF_CONFIG_INPLACE_SAMPLER, |
| }; |
| |
| // EventType represents one type of event, like cpu_cycle_event, cache_misses_event. |
| // The user knows one event type by its name, and the kernel knows one event type by its |
| // (type, config) pair. EventType connects the two representations, and tells the user if |
| // the event type is supported by the kernel. |
| |
| struct EventType { |
| EventType(const std::string& name, uint32_t type, uint64_t config, |
| const std::string& description, const std::string& limited_arch) |
| : name(name), type(type), config(config), description(description), |
| limited_arch(limited_arch) { |
| } |
| |
| EventType() : type(0), config(0) { |
| } |
| |
| bool operator<(const EventType& other) const { |
| return strcasecmp(name.c_str(), other.name.c_str()) < 0; |
| } |
| |
| std::string name; |
| uint32_t type; |
| uint64_t config; |
| std::string description; |
| std::string limited_arch; |
| }; |
| |
| bool SetTracepointEventsFilePath(const std::string& filepath); |
| std::string GetTracepointEvents(); |
| |
| // Used to temporarily change event types returned by GetAllEventTypes(). |
| class ScopedEventTypes { |
| public: |
| static std::string BuildString(const std::vector<const EventType*>& event_types); |
| |
| ScopedEventTypes(const std::string& event_type_str); |
| ~ScopedEventTypes(); |
| |
| private: |
| std::set<EventType> saved_event_types_; |
| }; |
| |
| const std::set<EventType>& GetAllEventTypes(); |
| const EventType* FindEventTypeByName(const std::string& name, bool report_error = true); |
| |
| struct EventTypeAndModifier { |
| std::string name; |
| EventType event_type; |
| std::string modifier; |
| bool exclude_user; |
| bool exclude_kernel; |
| bool exclude_hv; |
| bool exclude_host; |
| bool exclude_guest; |
| int precise_ip : 2; |
| |
| EventTypeAndModifier() |
| : exclude_user(false), |
| exclude_kernel(false), |
| exclude_hv(false), |
| exclude_host(false), |
| exclude_guest(false), |
| precise_ip(0) { |
| } |
| }; |
| |
| std::unique_ptr<EventTypeAndModifier> ParseEventType(const std::string& event_type_str); |
| |
| #endif // SIMPLE_PERF_EVENT_H_ |