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/*
* 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.
*/
#pragma once
#include "platform/bionic/macros.h"
#include "prop_info.h"
// Tracing class for sysprop. To begin a trace at a specified point:
// SyspropTrace trace ("prop_name", "prop_value");
// The trace will end when the constructor goes out of scope.
// For read-only properties (ro.*), also need to pass prop_info struct.
enum class PropertyAction {
kPropertyFind = 0,
kPropertySet,
kPropertyGetReadOnly,
kPropertyGetReadWrite,
};
class __LIBC_HIDDEN__ SyspropTrace {
public:
explicit SyspropTrace(const char* prop_name, const char* prop_value, const prop_info* pi,
PropertyAction action);
~SyspropTrace();
private:
const char* prop_name_;
const char* prop_value_;
const prop_info* prop_info_;
PropertyAction prop_action_;
bool output_trace_;
BIONIC_DISALLOW_COPY_AND_ASSIGN(SyspropTrace);
};
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