Clone of mbed rtos 2 for easy accessibility.
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rtos/MemoryPool.h
- Committer:
- emilmont
- Date:
- 2012-11-23
- Revision:
- 6:350b53afb889
- Child:
- 8:88a1a9c26ae3
File content as of revision 6:350b53afb889:
/* Copyright (c) 2012 mbed.org */ #ifndef MEMORYPOOL_H #define MEMORYPOOL_H #include <stdint.h> #include <string.h> #include "cmsis_os.h" namespace rtos { /*! Define and manage fixed-size memory pools of objects of a given type. \tparam T data type of a single object (element). \tparam queue_sz maximum number of objects (elements) in the memory pool. */ template<typename T, uint32_t pool_sz> class MemoryPool { public: /*! Create and Initialize a memory pool. */ MemoryPool() { #ifdef CMSIS_OS_RTX memset(_pool_m, 0, sizeof(_pool_m)); _pool_def.pool = _pool_m; _pool_def.pool_sz = pool_sz; _pool_def.item_sz = sizeof(T); #endif _pool_id = osPoolCreate(&_pool_def); } /*! Allocate a memory block of type T from a memory pool. \return address of the allocated memory block or NULL in case of no memory available. */ T* alloc(void) { return (T*)osPoolAlloc(_pool_id); } /*! Allocate a memory block of type T from a memory pool and set memory block to zero. \return address of the allocated memory block or NULL in case of no memory available. */ T* calloc(void) { return (T*)osPoolCAlloc(_pool_id); } /*! Return an allocated memory block back to a specific memory pool. \param address of the allocated memory block that is returned to the memory pool. \return status code that indicates the execution status of the function. */ osStatus free(T *block) { return osPoolFree(_pool_id, (void*)block); } private: osPoolId _pool_id; osPoolDef_t _pool_def; #ifdef CMSIS_OS_RTX uint32_t _pool_m[3+((sizeof(T)+3)/4)*(pool_sz)]; #endif }; } #endif