ON Semiconductor / mbed-os

5.2.1 - Updated I2C files

Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

rtos/MemoryPool.h@0:098463de4c5d, 2017-01-25 (annotated)

Committer:
group-onsemi
Date:
Wed Jan 25 20:34:15 2017 +0000
Revision:
0:098463de4c5d
Initial commit

Who changed what in which revision?

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group-onsemi 0:098463de4c5d 1 /* mbed Microcontroller Library
group-onsemi 0:098463de4c5d 2 * Copyright (c) 2006-2012 ARM Limited
group-onsemi 0:098463de4c5d 3 *
group-onsemi 0:098463de4c5d 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
group-onsemi 0:098463de4c5d 5 * of this software and associated documentation files (the "Software"), to deal
group-onsemi 0:098463de4c5d 6 * in the Software without restriction, including without limitation the rights
group-onsemi 0:098463de4c5d 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
group-onsemi 0:098463de4c5d 8 * copies of the Software, and to permit persons to whom the Software is
group-onsemi 0:098463de4c5d 9 * furnished to do so, subject to the following conditions:
group-onsemi 0:098463de4c5d 10 *
group-onsemi 0:098463de4c5d 11 * The above copyright notice and this permission notice shall be included in
group-onsemi 0:098463de4c5d 12 * all copies or substantial portions of the Software.
group-onsemi 0:098463de4c5d 13 *
group-onsemi 0:098463de4c5d 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
group-onsemi 0:098463de4c5d 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
group-onsemi 0:098463de4c5d 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
group-onsemi 0:098463de4c5d 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
group-onsemi 0:098463de4c5d 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
group-onsemi 0:098463de4c5d 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
group-onsemi 0:098463de4c5d 20 * SOFTWARE.
group-onsemi 0:098463de4c5d 21 */
group-onsemi 0:098463de4c5d 22 #ifndef MEMORYPOOL_H
group-onsemi 0:098463de4c5d 23 #define MEMORYPOOL_H
group-onsemi 0:098463de4c5d 24
group-onsemi 0:098463de4c5d 25 #include <stdint.h>
group-onsemi 0:098463de4c5d 26 #include <string.h>
group-onsemi 0:098463de4c5d 27
group-onsemi 0:098463de4c5d 28 #include "cmsis_os.h"
group-onsemi 0:098463de4c5d 29
group-onsemi 0:098463de4c5d 30 namespace rtos {
group-onsemi 0:098463de4c5d 31 /** \addtogroup rtos */
group-onsemi 0:098463de4c5d 32 /** @{*/
group-onsemi 0:098463de4c5d 33
group-onsemi 0:098463de4c5d 34 /** Define and manage fixed-size memory pools of objects of a given type.
group-onsemi 0:098463de4c5d 35 @tparam T data type of a single object (element).
group-onsemi 0:098463de4c5d 36 @tparam queue_sz maximum number of objects (elements) in the memory pool.
group-onsemi 0:098463de4c5d 37 */
group-onsemi 0:098463de4c5d 38 template<typename T, uint32_t pool_sz>
group-onsemi 0:098463de4c5d 39 class MemoryPool {
group-onsemi 0:098463de4c5d 40 public:
group-onsemi 0:098463de4c5d 41 /** Create and Initialize a memory pool. */
group-onsemi 0:098463de4c5d 42 MemoryPool() {
group-onsemi 0:098463de4c5d 43 #ifdef CMSIS_OS_RTX
group-onsemi 0:098463de4c5d 44 memset(_pool_m, 0, sizeof(_pool_m));
group-onsemi 0:098463de4c5d 45 _pool_def.pool = _pool_m;
group-onsemi 0:098463de4c5d 46
group-onsemi 0:098463de4c5d 47 _pool_def.pool_sz = pool_sz;
group-onsemi 0:098463de4c5d 48 _pool_def.item_sz = sizeof(T);
group-onsemi 0:098463de4c5d 49 #endif
group-onsemi 0:098463de4c5d 50 _pool_id = osPoolCreate(&_pool_def);
group-onsemi 0:098463de4c5d 51 }
group-onsemi 0:098463de4c5d 52
group-onsemi 0:098463de4c5d 53 /** Allocate a memory block of type T from a memory pool.
group-onsemi 0:098463de4c5d 54 @return address of the allocated memory block or NULL in case of no memory available.
group-onsemi 0:098463de4c5d 55 */
group-onsemi 0:098463de4c5d 56 T* alloc(void) {
group-onsemi 0:098463de4c5d 57 return (T*)osPoolAlloc(_pool_id);
group-onsemi 0:098463de4c5d 58 }
group-onsemi 0:098463de4c5d 59
group-onsemi 0:098463de4c5d 60 /** Allocate a memory block of type T from a memory pool and set memory block to zero.
group-onsemi 0:098463de4c5d 61 @return address of the allocated memory block or NULL in case of no memory available.
group-onsemi 0:098463de4c5d 62 */
group-onsemi 0:098463de4c5d 63 T* calloc(void) {
group-onsemi 0:098463de4c5d 64 return (T*)osPoolCAlloc(_pool_id);
group-onsemi 0:098463de4c5d 65 }
group-onsemi 0:098463de4c5d 66
group-onsemi 0:098463de4c5d 67 /** Return an allocated memory block back to a specific memory pool.
group-onsemi 0:098463de4c5d 68 @param address of the allocated memory block that is returned to the memory pool.
group-onsemi 0:098463de4c5d 69 @return status code that indicates the execution status of the function.
group-onsemi 0:098463de4c5d 70 */
group-onsemi 0:098463de4c5d 71 osStatus free(T *block) {
group-onsemi 0:098463de4c5d 72 return osPoolFree(_pool_id, (void*)block);
group-onsemi 0:098463de4c5d 73 }
group-onsemi 0:098463de4c5d 74
group-onsemi 0:098463de4c5d 75 private:
group-onsemi 0:098463de4c5d 76 osPoolId _pool_id;
group-onsemi 0:098463de4c5d 77 osPoolDef_t _pool_def;
group-onsemi 0:098463de4c5d 78 #ifdef CMSIS_OS_RTX
group-onsemi 0:098463de4c5d 79 uint32_t _pool_m[3+((sizeof(T)+3)/4)*(pool_sz)];
group-onsemi 0:098463de4c5d 80 #endif
group-onsemi 0:098463de4c5d 81 };
group-onsemi 0:098463de4c5d 82
group-onsemi 0:098463de4c5d 83 }
group-onsemi 0:098463de4c5d 84 #endif
group-onsemi 0:098463de4c5d 85
group-onsemi 0:098463de4c5d 86 /** @}*/