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Dependencies:   FFT

mbed-rtos/rtos/MemoryPool.h@7:0d62545e6d73, 2020-12-03 (annotated)

Committer:
shyamgatech
Date:
Thu Dec 03 18:15:35 2020 +0000
Revision:
7:0d62545e6d73
Parent:
0:d6c9b09b4042 
addded gui mbed code;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
annieluo2 0:d6c9b09b4042 1 /* mbed Microcontroller Library
annieluo2 0:d6c9b09b4042 2 * Copyright (c) 2006-2012 ARM Limited
annieluo2 0:d6c9b09b4042 3 *
annieluo2 0:d6c9b09b4042 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
annieluo2 0:d6c9b09b4042 5 * of this software and associated documentation files (the "Software"), to deal
annieluo2 0:d6c9b09b4042 6 * in the Software without restriction, including without limitation the rights
annieluo2 0:d6c9b09b4042 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
annieluo2 0:d6c9b09b4042 8 * copies of the Software, and to permit persons to whom the Software is
annieluo2 0:d6c9b09b4042 9 * furnished to do so, subject to the following conditions:
annieluo2 0:d6c9b09b4042 10 *
annieluo2 0:d6c9b09b4042 11 * The above copyright notice and this permission notice shall be included in
annieluo2 0:d6c9b09b4042 12 * all copies or substantial portions of the Software.
annieluo2 0:d6c9b09b4042 13 *
annieluo2 0:d6c9b09b4042 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
annieluo2 0:d6c9b09b4042 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
annieluo2 0:d6c9b09b4042 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
annieluo2 0:d6c9b09b4042 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
annieluo2 0:d6c9b09b4042 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
annieluo2 0:d6c9b09b4042 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
annieluo2 0:d6c9b09b4042 20 * SOFTWARE.
annieluo2 0:d6c9b09b4042 21 */
annieluo2 0:d6c9b09b4042 22 #ifndef MEMORYPOOL_H
annieluo2 0:d6c9b09b4042 23 #define MEMORYPOOL_H
annieluo2 0:d6c9b09b4042 24
annieluo2 0:d6c9b09b4042 25 #include <stdint.h>
annieluo2 0:d6c9b09b4042 26 #include <string.h>
annieluo2 0:d6c9b09b4042 27
annieluo2 0:d6c9b09b4042 28 #include "cmsis_os.h"
annieluo2 0:d6c9b09b4042 29
annieluo2 0:d6c9b09b4042 30 namespace rtos {
annieluo2 0:d6c9b09b4042 31 /** \addtogroup rtos */
annieluo2 0:d6c9b09b4042 32 /** @{*/
annieluo2 0:d6c9b09b4042 33
annieluo2 0:d6c9b09b4042 34 /** Define and manage fixed-size memory pools of objects of a given type.
annieluo2 0:d6c9b09b4042 35 @tparam T data type of a single object (element).
annieluo2 0:d6c9b09b4042 36 @tparam queue_sz maximum number of objects (elements) in the memory pool.
annieluo2 0:d6c9b09b4042 37 */
annieluo2 0:d6c9b09b4042 38 template<typename T, uint32_t pool_sz>
annieluo2 0:d6c9b09b4042 39 class MemoryPool {
annieluo2 0:d6c9b09b4042 40 public:
annieluo2 0:d6c9b09b4042 41 /** Create and Initialize a memory pool. */
annieluo2 0:d6c9b09b4042 42 MemoryPool() {
annieluo2 0:d6c9b09b4042 43 #ifdef CMSIS_OS_RTX
annieluo2 0:d6c9b09b4042 44 memset(_pool_m, 0, sizeof(_pool_m));
annieluo2 0:d6c9b09b4042 45 _pool_def.pool = _pool_m;
annieluo2 0:d6c9b09b4042 46
annieluo2 0:d6c9b09b4042 47 _pool_def.pool_sz = pool_sz;
annieluo2 0:d6c9b09b4042 48 _pool_def.item_sz = sizeof(T);
annieluo2 0:d6c9b09b4042 49 #endif
annieluo2 0:d6c9b09b4042 50 _pool_id = osPoolCreate(&_pool_def);
annieluo2 0:d6c9b09b4042 51 }
annieluo2 0:d6c9b09b4042 52
annieluo2 0:d6c9b09b4042 53 /** Allocate a memory block of type T from a memory pool.
annieluo2 0:d6c9b09b4042 54 @return address of the allocated memory block or NULL in case of no memory available.
annieluo2 0:d6c9b09b4042 55 */
annieluo2 0:d6c9b09b4042 56 T* alloc(void) {
annieluo2 0:d6c9b09b4042 57 return (T*)osPoolAlloc(_pool_id);
annieluo2 0:d6c9b09b4042 58 }
annieluo2 0:d6c9b09b4042 59
annieluo2 0:d6c9b09b4042 60 /** Allocate a memory block of type T from a memory pool and set memory block to zero.
annieluo2 0:d6c9b09b4042 61 @return address of the allocated memory block or NULL in case of no memory available.
annieluo2 0:d6c9b09b4042 62 */
annieluo2 0:d6c9b09b4042 63 T* calloc(void) {
annieluo2 0:d6c9b09b4042 64 return (T*)osPoolCAlloc(_pool_id);
annieluo2 0:d6c9b09b4042 65 }
annieluo2 0:d6c9b09b4042 66
annieluo2 0:d6c9b09b4042 67 /** Return an allocated memory block back to a specific memory pool.
annieluo2 0:d6c9b09b4042 68 @param address of the allocated memory block that is returned to the memory pool.
annieluo2 0:d6c9b09b4042 69 @return status code that indicates the execution status of the function.
annieluo2 0:d6c9b09b4042 70 */
annieluo2 0:d6c9b09b4042 71 osStatus free(T *block) {
annieluo2 0:d6c9b09b4042 72 return osPoolFree(_pool_id, (void*)block);
annieluo2 0:d6c9b09b4042 73 }
annieluo2 0:d6c9b09b4042 74
annieluo2 0:d6c9b09b4042 75 private:
annieluo2 0:d6c9b09b4042 76 osPoolId _pool_id;
annieluo2 0:d6c9b09b4042 77 osPoolDef_t _pool_def;
annieluo2 0:d6c9b09b4042 78 #ifdef CMSIS_OS_RTX
annieluo2 0:d6c9b09b4042 79 uint32_t _pool_m[3+((sizeof(T)+3)/4)*(pool_sz)];
annieluo2 0:d6c9b09b4042 80 #endif
annieluo2 0:d6c9b09b4042 81 };
annieluo2 0:d6c9b09b4042 82
annieluo2 0:d6c9b09b4042 83 }
annieluo2 0:d6c9b09b4042 84 #endif
annieluo2 0:d6c9b09b4042 85
annieluo2 0:d6c9b09b4042 86 /** @}*/