/// Initialize Memory Pool with variable block size.
/// \param[in] mem pointer to memory pool.
/// \param[in] size size of a memory pool in bytes.
/// \return 1 - success, 0 - failure.
__WEAK uint32_t osRtxMemoryInit (void *mem, uint32_t size) {
mem_head_t *head;
mem_block_t *ptr;
// Check parameters
//lint -e{923} "cast from pointer to unsigned int" [MISRA Note 7]
if ((mem == NULL) || (((uint32_t)mem & 7U) != 0U) || ((size & 7U) != 0U) ||
(size < (sizeof(mem_head_t) + (2U*sizeof(mem_block_t))))) {
EvrRtxMemoryInit(mem, size, 0U);
//lint -e{904} "Return statement before end of function" [MISRA Note 1]
return 0U;
}
// Initialize memory pool header
head = MemHeadPtr(mem);
head->size = size;
head->used = sizeof(mem_head_t) + sizeof(mem_block_t);
// Initialize first and last block header
ptr = MemBlockPtr(mem, sizeof(mem_head_t));
ptr->next = MemBlockPtr(mem, size - sizeof(mem_block_t));
ptr->next->next = NULL;
ptr->next->info = sizeof(mem_head_t) + sizeof(mem_block_t);
ptr->info = 0U;
EvrRtxMemoryInit(mem, size, 1U);
return 1U;
}
/// Initialize Memory Pool with variable block size.
/// \param[in] mem pointer to memory pool.
/// \param[in] size size of a memory pool in bytes.
/// \return 1 - success, 0 - failure.
__WEAK uint32_t osRtxMemoryInit (void *mem, uint32_t size) {
mem_head_t *head;
mem_block_t *ptr;
if ((mem == NULL) || ((uint32_t)mem & 7U) || (size & 7U) ||
(size < (sizeof(mem_head_t) + 2*sizeof(mem_block_t)))) {
EvrRtxMemoryInit(mem, size, 0U);
return 0U;
}
head = (mem_head_t *)mem;
head->size = size;
head->used = sizeof(mem_head_t) + sizeof(mem_block_t);
ptr = (mem_block_t *)((uint32_t)mem + sizeof(mem_head_t));
ptr->next = (mem_block_t *)((uint32_t)mem + size - sizeof(mem_block_t));
ptr->next->next = NULL;
ptr->info = 0U;
EvrRtxMemoryInit(mem, size, 1U);
return 1U;
}