Ben Katz
mbed library sources. Supersedes mbed-src.
Dependents: SPIne CH_Communicatuin_Test CH_Communicatuin_Test2 MCP_SPIne ... more
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mbed-dev-f303
by 
Ben Katz
platform/CriticalSectionLock.h@179:97f825502e2a, 2018-05-02 (annotated)
- Committer:
- benkatz
- Date:
- Wed May 02 18:08:16 2018 +0000
- Revision:
- 179:97f825502e2a
- Parent:
- 174:b96e65c34a4d
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| AnnaBridge | 174:b96e65c34a4d | 1 | /* |
| AnnaBridge | 174:b96e65c34a4d | 2 | * PackageLicenseDeclared: Apache-2.0 |
| AnnaBridge | 174:b96e65c34a4d | 3 | * Copyright (c) 2017 ARM Limited |
| AnnaBridge | 174:b96e65c34a4d | 4 | * |
| AnnaBridge | 174:b96e65c34a4d | 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| AnnaBridge | 174:b96e65c34a4d | 6 | * you may not use this file except in compliance with the License. |
| AnnaBridge | 174:b96e65c34a4d | 7 | * You may obtain a copy of the License at |
| AnnaBridge | 174:b96e65c34a4d | 8 | * |
| AnnaBridge | 174:b96e65c34a4d | 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| AnnaBridge | 174:b96e65c34a4d | 10 | * |
| AnnaBridge | 174:b96e65c34a4d | 11 | * Unless required by applicable law or agreed to in writing, software |
| AnnaBridge | 174:b96e65c34a4d | 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| AnnaBridge | 174:b96e65c34a4d | 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| AnnaBridge | 174:b96e65c34a4d | 14 | * See the License for the specific language governing permissions and |
| AnnaBridge | 174:b96e65c34a4d | 15 | * limitations under the License. |
| AnnaBridge | 174:b96e65c34a4d | 16 | */ |
| AnnaBridge | 174:b96e65c34a4d | 17 | |
| AnnaBridge | 174:b96e65c34a4d | 18 | #ifndef MBED_CRITICALSECTIONLOCK_H |
| AnnaBridge | 174:b96e65c34a4d | 19 | #define MBED_CRITICALSECTIONLOCK_H |
| AnnaBridge | 174:b96e65c34a4d | 20 | |
| AnnaBridge | 174:b96e65c34a4d | 21 | #include "platform/mbed_critical.h" |
| AnnaBridge | 174:b96e65c34a4d | 22 | |
| AnnaBridge | 174:b96e65c34a4d | 23 | namespace mbed { |
| AnnaBridge | 174:b96e65c34a4d | 24 | |
| AnnaBridge | 174:b96e65c34a4d | 25 | /** RAII object for disabling, then restoring, interrupt state |
| AnnaBridge | 174:b96e65c34a4d | 26 | * Usage: |
| AnnaBridge | 174:b96e65c34a4d | 27 | * @code |
| AnnaBridge | 174:b96e65c34a4d | 28 | * |
| AnnaBridge | 174:b96e65c34a4d | 29 | * void f() { |
| AnnaBridge | 174:b96e65c34a4d | 30 | * // some code here |
| AnnaBridge | 174:b96e65c34a4d | 31 | * { |
| AnnaBridge | 174:b96e65c34a4d | 32 | * CriticalSectionLock lock; |
| AnnaBridge | 174:b96e65c34a4d | 33 | * // Code in this block will run with interrupts disabled |
| AnnaBridge | 174:b96e65c34a4d | 34 | * } |
| AnnaBridge | 174:b96e65c34a4d | 35 | * // interrupts will be restored to their previous state |
| AnnaBridge | 174:b96e65c34a4d | 36 | * } |
| AnnaBridge | 174:b96e65c34a4d | 37 | * @endcode |
| AnnaBridge | 174:b96e65c34a4d | 38 | */ |
| AnnaBridge | 174:b96e65c34a4d | 39 | class CriticalSectionLock { |
| AnnaBridge | 174:b96e65c34a4d | 40 | public: |
| AnnaBridge | 174:b96e65c34a4d | 41 | CriticalSectionLock() |
| AnnaBridge | 174:b96e65c34a4d | 42 | { |
| AnnaBridge | 174:b96e65c34a4d | 43 | core_util_critical_section_enter(); |
| AnnaBridge | 174:b96e65c34a4d | 44 | } |
| AnnaBridge | 174:b96e65c34a4d | 45 | |
| AnnaBridge | 174:b96e65c34a4d | 46 | ~CriticalSectionLock() |
| AnnaBridge | 174:b96e65c34a4d | 47 | { |
| AnnaBridge | 174:b96e65c34a4d | 48 | core_util_critical_section_exit(); |
| AnnaBridge | 174:b96e65c34a4d | 49 | } |
| AnnaBridge | 174:b96e65c34a4d | 50 | |
| AnnaBridge | 174:b96e65c34a4d | 51 | /** Mark the start of a critical section |
| AnnaBridge | 174:b96e65c34a4d | 52 | * |
| AnnaBridge | 174:b96e65c34a4d | 53 | */ |
| AnnaBridge | 174:b96e65c34a4d | 54 | void lock() |
| AnnaBridge | 174:b96e65c34a4d | 55 | { |
| AnnaBridge | 174:b96e65c34a4d | 56 | core_util_critical_section_enter(); |
| AnnaBridge | 174:b96e65c34a4d | 57 | } |
| AnnaBridge | 174:b96e65c34a4d | 58 | |
| AnnaBridge | 174:b96e65c34a4d | 59 | /** Mark the end of a critical section |
| AnnaBridge | 174:b96e65c34a4d | 60 | * |
| AnnaBridge | 174:b96e65c34a4d | 61 | */ |
| AnnaBridge | 174:b96e65c34a4d | 62 | void unlock() |
| AnnaBridge | 174:b96e65c34a4d | 63 | { |
| AnnaBridge | 174:b96e65c34a4d | 64 | core_util_critical_section_exit(); |
| AnnaBridge | 174:b96e65c34a4d | 65 | } |
| AnnaBridge | 174:b96e65c34a4d | 66 | }; |
| AnnaBridge | 174:b96e65c34a4d | 67 | |
| AnnaBridge | 174:b96e65c34a4d | 68 | |
| AnnaBridge | 174:b96e65c34a4d | 69 | } // namespace mbed |
| AnnaBridge | 174:b96e65c34a4d | 70 | |
| AnnaBridge | 174:b96e65c34a4d | 71 | #endif |