| /* |
| * Copyright (C) 2020 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 SRC_TRACE_PROCESSOR_IMPORTERS_FTRACE_THREAD_STATE_TRACKER_H_ |
| #define SRC_TRACE_PROCESSOR_IMPORTERS_FTRACE_THREAD_STATE_TRACKER_H_ |
| |
| #include "src/trace_processor/storage/trace_storage.h" |
| #include "src/trace_processor/types/destructible.h" |
| #include "src/trace_processor/types/trace_processor_context.h" |
| |
| namespace perfetto { |
| namespace trace_processor { |
| |
| // Responsible for filling the Thread State table by analysing sched switches, |
| // waking events and blocking reasons. |
| class ThreadStateTracker : public Destructible { |
| public: |
| explicit ThreadStateTracker(TraceStorage*); |
| ThreadStateTracker(const ThreadStateTracker&) = delete; |
| ThreadStateTracker& operator=(const ThreadStateTracker&) = delete; |
| ~ThreadStateTracker() override; |
| static ThreadStateTracker* GetOrCreate(TraceProcessorContext* context) { |
| if (!context->thread_state_tracker) { |
| context->thread_state_tracker.reset( |
| new ThreadStateTracker(context->storage.get())); |
| } |
| return static_cast<ThreadStateTracker*>( |
| context->thread_state_tracker.get()); |
| } |
| |
| // Will cause addition of state and update of the previous state for next_utid |
| // and prev_utid. |
| void PushSchedSwitchEvent(int64_t event_ts, |
| uint32_t cpu, |
| UniqueTid prev_utid, |
| StringId prev_state, |
| UniqueTid next_utid); |
| |
| // Will add a runnable state for utid and close the previously blocked one. |
| void PushWakingEvent(int64_t event_ts, UniqueTid utid, UniqueTid waker_utid); |
| |
| // Will add a runnable state for utid. For a new task there are no previous |
| // states to close. |
| void PushNewTaskEvent(int64_t event_ts, UniqueTid utid, UniqueTid waker_utid); |
| |
| // Updates the current blocked state for utid with blocked reason. |
| void PushBlockedReason(UniqueTid utid, |
| std::optional<bool> io_wait, |
| std::optional<StringId> blocked_function); |
| |
| private: |
| void AddOpenState(int64_t ts, |
| UniqueTid utid, |
| StringId state, |
| std::optional<uint32_t> cpu = std::nullopt, |
| std::optional<UniqueTid> waker_utid = std::nullopt); |
| void ClosePendingState(int64_t end_ts, UniqueTid utid, bool data_loss); |
| |
| bool IsRunning(StringId state); |
| bool IsBlocked(StringId state); |
| bool IsRunnable(StringId state); |
| |
| bool HasPreviousRowNumbersForUtid(UniqueTid utid) { |
| return utid < prev_row_numbers_for_thread_.size() && |
| prev_row_numbers_for_thread_[utid].has_value(); |
| } |
| |
| tables::ThreadStateTable::RowReference RowNumToRef( |
| tables::ThreadStateTable::RowNumber row_number) { |
| return row_number.ToRowReference(storage_->mutable_thread_state_table()); |
| } |
| |
| TraceStorage* const storage_; |
| |
| // Strings |
| StringId running_string_id_; |
| StringId runnable_string_id_; |
| |
| struct RelatedRows { |
| std::optional<tables::ThreadStateTable::RowNumber> last_blocked_row; |
| tables::ThreadStateTable::RowNumber last_row; |
| }; |
| |
| std::vector<std::optional<RelatedRows>> prev_row_numbers_for_thread_; |
| }; |
| } // namespace trace_processor |
| } // namespace perfetto |
| |
| #endif // SRC_TRACE_PROCESSOR_IMPORTERS_FTRACE_THREAD_STATE_TRACKER_H_ |