Simulated product dispenser

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Show/hide line numbers aq_critical.h Source File

aq_critical.h

00001 // ----------------------------------------------------------------------------
00002 // Copyright 2015-2017 ARM Ltd.
00003 //
00004 // SPDX-License-Identifier: Apache-2.0
00005 //
00006 // Licensed under the Apache License, Version 2.0 (the "License");
00007 // you may not use this file except in compliance with the License.
00008 // You may obtain a copy of the License at
00009 //
00010 //     http://www.apache.org/licenses/LICENSE-2.0
00011 //
00012 // Unless required by applicable law or agreed to in writing, software
00013 // distributed under the License is distributed on an "AS IS" BASIS,
00014 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00015 // See the License for the specific language governing permissions and
00016 // limitations under the License.
00017 // ----------------------------------------------------------------------------
00018 
00019 #ifndef __ATOMIC_QUEUE_CRITICAL_H__
00020 #define __ATOMIC_QUEUE_CRITICAL_H__
00021 
00022 #ifdef __cplusplus
00023 extern "C" {
00024 #endif
00025 
00026 /** Mark the start of a critical section
00027   *
00028   * This function should be called to mark the start of a critical section of code.
00029   * \note
00030   * NOTES:
00031   * 1) The use of this style of critical section is targetted at C based implementations.
00032   * 2) These critical sections can be nested.
00033   * 3) The interrupt enable state on entry to the first critical section (of a nested set, or single
00034   *    section) will be preserved on exit from the section.
00035   * 4) This implementation will currently only work on code running in privileged mode.
00036   */
00037 void aq_critical_section_enter(void);
00038 
00039 /** Mark the end of a critical section
00040   *
00041   * This function should be called to mark the end of a critical section of code.
00042   * \note
00043   * NOTES:
00044   * 1) The use of this style of critical section is targetted at C based implementations.
00045   * 2) These critical sections can be nested.
00046   * 3) The interrupt enable state on entry to the first critical section (of a nested set, or single
00047   *    section) will be preserved on exit from the section.
00048   * 4) This implementation will currently only work on code running in privileged mode.
00049   */
00050 void aq_critical_section_exit(void);
00051 
00052 #ifdef __cplusplus
00053 } // extern "C"
00054 #endif
00055 
00056 
00057 #endif // __ATOMIC_QUEUE_CRITICAL_H__