116 lines
4.3 KiB
Java
116 lines
4.3 KiB
Java
/*
|
|
* Copyright (C) 2023 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.
|
|
*/
|
|
|
|
package android.tracing.perfetto;
|
|
|
|
import android.util.proto.ProtoOutputStream;
|
|
|
|
import java.util.ArrayList;
|
|
import java.util.List;
|
|
|
|
/**
|
|
* Argument passed to the lambda function passed to Trace().
|
|
*
|
|
* @param <DataSourceInstanceType> The type of the datasource this tracing context is for.
|
|
* @param <TlsStateType> The type of the custom TLS state, if any is used.
|
|
* @param <IncrementalStateType> The type of the custom incremental state, if any is used.
|
|
*
|
|
* @hide
|
|
*/
|
|
public class TracingContext<DataSourceInstanceType extends DataSourceInstance, TlsStateType,
|
|
IncrementalStateType> {
|
|
|
|
private final DataSource<DataSourceInstanceType, TlsStateType, IncrementalStateType>
|
|
mDataSource;
|
|
private final int mInstanceIndex;
|
|
private final List<ProtoOutputStream> mTracePackets = new ArrayList<>();
|
|
|
|
TracingContext(DataSource<DataSourceInstanceType, TlsStateType, IncrementalStateType>
|
|
dataSource,
|
|
int instanceIndex) {
|
|
this.mDataSource = dataSource;
|
|
this.mInstanceIndex = instanceIndex;
|
|
}
|
|
|
|
/**
|
|
* Creates a new output stream to be used to write a trace packet to. The output stream will be
|
|
* encoded to the proto binary representation when the callback trace function finishes and
|
|
* send over to the native side to be included in the proto buffer.
|
|
*
|
|
* @return A proto output stream to write a trace packet proto to
|
|
*/
|
|
public ProtoOutputStream newTracePacket() {
|
|
final ProtoOutputStream os = new ProtoOutputStream(0);
|
|
mTracePackets.add(os);
|
|
return os;
|
|
}
|
|
|
|
/**
|
|
* Can optionally be used to store custom per-sequence
|
|
* session data, which is not reset when incremental state is cleared
|
|
* (e.g. configuration options).
|
|
*h
|
|
* @return The TlsState instance for the tracing thread and instance.
|
|
*/
|
|
public TlsStateType getCustomTlsState() {
|
|
TlsStateType tlsState = (TlsStateType) nativeGetCustomTls(mDataSource.mNativeObj);
|
|
if (tlsState == null) {
|
|
final CreateTlsStateArgs<DataSourceInstanceType> args =
|
|
new CreateTlsStateArgs<>(mDataSource, mInstanceIndex);
|
|
tlsState = mDataSource.createTlsState(args);
|
|
nativeSetCustomTls(mDataSource.mNativeObj, tlsState);
|
|
}
|
|
|
|
return tlsState;
|
|
}
|
|
|
|
/**
|
|
* Can optionally be used store custom per-sequence
|
|
* incremental data (e.g., interning tables).
|
|
*
|
|
* @return The current IncrementalState object instance.
|
|
*/
|
|
public IncrementalStateType getIncrementalState() {
|
|
IncrementalStateType incrementalState =
|
|
(IncrementalStateType) nativeGetIncrementalState(mDataSource.mNativeObj);
|
|
if (incrementalState == null) {
|
|
final CreateIncrementalStateArgs<DataSourceInstanceType> args =
|
|
new CreateIncrementalStateArgs<>(mDataSource, mInstanceIndex);
|
|
incrementalState = mDataSource.createIncrementalState(args);
|
|
nativeSetIncrementalState(mDataSource.mNativeObj, incrementalState);
|
|
}
|
|
|
|
return incrementalState;
|
|
}
|
|
|
|
protected byte[][] getAndClearAllPendingTracePackets() {
|
|
byte[][] res = new byte[mTracePackets.size()][];
|
|
for (int i = 0; i < mTracePackets.size(); i++) {
|
|
ProtoOutputStream tracePacket = mTracePackets.get(i);
|
|
res[i] = tracePacket.getBytes();
|
|
}
|
|
|
|
mTracePackets.clear();
|
|
return res;
|
|
}
|
|
|
|
private static native Object nativeGetCustomTls(long nativeDsPtr);
|
|
private static native void nativeSetCustomTls(long nativeDsPtr, Object tlsState);
|
|
|
|
private static native Object nativeGetIncrementalState(long nativeDsPtr);
|
|
private static native void nativeSetIncrementalState(long nativeDsPtr, Object incrementalState);
|
|
}
|