libatrace_rust/benchmark/src/trace_enabler.h

/*
 * 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.
 */

#pragma once

#include <sys/cdefs.h>

// A library to enable tracing for benchmarks.
// It only causes ftrace events to be emitted so that we can measure
// performance and is not intended to enable tracing for meaningful results.

__BEGIN_DECLS

// Disable tracing for ATRACE_TAG_APP events.
// Terminates the app on error and writes an error message to logd and stderr.
void disable_app_atrace();

// Enable ATRACE_TAG_APP events only for the specified app pattern.
// ATrace uses fnmatch for the pattern.
// Terminates the app on error and writes an error message to logd and stderr.
void enable_atrace_for_single_app(const char* name);

__END_DECLS