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https://github.com/silenty4ng/uv-k5-firmware-chinese-lts
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62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
/* Copyright (c) 2012 mbed.org */
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#ifndef MEMORYPOOL_H
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#define MEMORYPOOL_H
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#include <stdint.h>
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#include <string.h>
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#include "cmsis_os.h"
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namespace rtos {
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/*! Define and manage fixed-size memory pools of objects of a given type.
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\tparam T data type of a single object (element).
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\tparam queue_sz maximum number of objects (elements) in the memory pool.
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*/
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template<typename T, uint32_t pool_sz>
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class MemoryPool {
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public:
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/*! Create and Initialize a memory pool. */
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MemoryPool() {
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#ifdef CMSIS_OS_RTX
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memset(_pool_m, 0, sizeof(_pool_m));
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_pool_def.pool = _pool_m;
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_pool_def.pool_sz = pool_sz;
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_pool_def.item_sz = sizeof(T);
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#endif
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_pool_id = osPoolCreate(&_pool_def);
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}
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/*! Allocate a memory block of type T from a memory pool.
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\return address of the allocated memory block or NULL in case of no memory available.
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*/
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T* alloc(void) {
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return (T*)osPoolAlloc(_pool_id);
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}
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/*! Allocate a memory block of type T from a memory pool and set memory block to zero.
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\return address of the allocated memory block or NULL in case of no memory available.
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*/
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T* calloc(void) {
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return (T*)osPoolCAlloc(_pool_id);
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}
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/*! Return an allocated memory block back to a specific memory pool.
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\param address of the allocated memory block that is returned to the memory pool.
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\return status code that indicates the execution status of the function.
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*/
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osStatus free(T *block) {
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return osPoolFree(_pool_id, (void*)block);
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}
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private:
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osPoolId _pool_id;
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osPoolDef_t _pool_def;
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#ifdef CMSIS_OS_RTX
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uint32_t _pool_m[3+((sizeof(T)+3)/4)*(pool_sz)];
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#endif
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};
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}
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#endif
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