mirror of https://github.com/ARMmbed/mbed-os.git
73 lines
1.8 KiB
C++
73 lines
1.8 KiB
C++
/* mbed Microcontroller Library
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* Copyright (c) 2018 ARM Limited
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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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#ifndef MBED_SCOPEDRAMEXECUTIONLOCK_H
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#define MBED_SCOPEDRAMEXECUTIONLOCK_H
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#include "platform/mbed_mpu_mgmt.h"
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#include "platform/NonCopyable.h"
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namespace mbed {
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/** \addtogroup platform */
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/** @{*/
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/** RAII object for disabling, then restoring RAM execute never mode
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* Usage:
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* @code
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*
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* void f() {
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* // some code here
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* {
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* ScopedRamExecutionLock make_ram_executable;
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* // Code in this block is allowed to call functions in RAM
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* }
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* // Execution from RAM is no longer allowed
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* }
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* @endcode
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*/
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class ScopedRamExecutionLock : private mbed::NonCopyable<ScopedRamExecutionLock> {
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public:
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/**
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* Allow execution from RAM
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*
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* Increment the execute never lock to ensure code can
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* be executed from RAM. This class uses RAII to allow
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* execution from ram while it is in scope.
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*/
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ScopedRamExecutionLock()
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{
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mbed_mpu_manager_lock_ram_execution();
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}
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/**
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* Restore previous execution from RAM settings
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*
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* Decrement the execute never lock to return execute from RAM
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* to its prior state.
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*/
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~ScopedRamExecutionLock()
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{
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mbed_mpu_manager_unlock_ram_execution();
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}
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};
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/**@}*/
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}
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#endif
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