| /* |
| * Copyright 2017 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. |
| */ |
| #undef LOG_TAG |
| #define LOG_TAG "SurfaceTracing" |
| #define ATRACE_TAG ATRACE_TAG_GRAPHICS |
| |
| #include "SurfaceTracing.h" |
| |
| #include <android-base/file.h> |
| #include <log/log.h> |
| #include <utils/SystemClock.h> |
| #include <utils/Trace.h> |
| |
| namespace android { |
| |
| void SurfaceTracing::enable() { |
| if (mEnabled) { |
| return; |
| } |
| ATRACE_CALL(); |
| mEnabled = true; |
| std::lock_guard<std::mutex> protoGuard(mTraceMutex); |
| |
| mTrace.set_magic_number(uint64_t(LayersTraceFileProto_MagicNumber_MAGIC_NUMBER_H) << 32 | |
| LayersTraceFileProto_MagicNumber_MAGIC_NUMBER_L); |
| } |
| |
| status_t SurfaceTracing::disable() { |
| if (!mEnabled) { |
| return NO_ERROR; |
| } |
| ATRACE_CALL(); |
| std::lock_guard<std::mutex> protoGuard(mTraceMutex); |
| mEnabled = false; |
| status_t err(writeProtoFileLocked()); |
| ALOGE_IF(err == PERMISSION_DENIED, "Could not save the proto file! Permission denied"); |
| ALOGE_IF(err == NOT_ENOUGH_DATA, "Could not save the proto file! There are missing fields"); |
| mTrace.Clear(); |
| return err; |
| } |
| |
| bool SurfaceTracing::isEnabled() { |
| return mEnabled; |
| } |
| |
| void SurfaceTracing::traceLayers(const char* where, LayersProto layers) { |
| std::lock_guard<std::mutex> protoGuard(mTraceMutex); |
| |
| LayersTraceProto* entry = mTrace.add_entry(); |
| entry->set_elapsed_realtime_nanos(elapsedRealtimeNano()); |
| entry->set_where(where); |
| entry->mutable_layers()->Swap(&layers); |
| } |
| |
| status_t SurfaceTracing::writeProtoFileLocked() { |
| ATRACE_CALL(); |
| |
| if (!mTrace.IsInitialized()) { |
| return NOT_ENOUGH_DATA; |
| } |
| std::string output; |
| if (!mTrace.SerializeToString(&output)) { |
| return PERMISSION_DENIED; |
| } |
| if (!android::base::WriteStringToFile(output, mOutputFileName, true)) { |
| return PERMISSION_DENIED; |
| } |
| |
| return NO_ERROR; |
| } |
| |
| } // namespace android |