41 lines
1.7 KiB
Java
41 lines
1.7 KiB
Java
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/*
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.tracing.perfetto;
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/**
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* The interface for the trace function called from native on a trace call with a context.
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*
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* @param <DataSourceInstanceType> The type of DataSource this tracing context is for.
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* @param <TlsStateType> The type of the custom TLS state, if any is used.
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* @param <IncrementalStateType> The type of the custom incremental state, if any is used.
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*
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* @hide
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*/
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public interface TraceFunction<DataSourceInstanceType extends DataSourceInstance,
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TlsStateType, IncrementalStateType> {
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/**
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* This function will be called synchronously (i.e., always before trace() returns) only if
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* tracing is enabled and the data source has been enabled in the tracing config.
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* It can be called more than once per trace() call, in the case of concurrent tracing sessions
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* (or even if the data source is instantiated twice within the same trace config).
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*
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* @param ctx the tracing context to trace for in the trace function.
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*/
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void trace(TracingContext<DataSourceInstanceType, TlsStateType, IncrementalStateType> ctx);
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}
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