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lib_mem.h/lib_mem.c
Prototype
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void Mem_PoolCreate (MEM_POOL *pmem_pool,
void *pmem_base_addr,
CPU_SIZE_T mem_size,
MEM_POOL_BLK_QTY blk_nbr,
CPU_SIZE_T blk_size,
CPU_SIZE_T blk_align,
CPU_SIZE_T *poctets_reqd,
LIB_ERR *perr); |
Arguments
pmem_pool
Pointer to a memory pool structure to create.
...
pmem_pool must be passed a valid pointer to the address of a declared MEM_POOL variable.
Example Usage
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MEM_POOL AppMemPoolFromHeap;
MEM_POOL AppMemPoolFromUserMemSeg;
CPU_SIZE_T octets_reqd;
LIB_ERR err;
Mem_PoolCreate((MEM_POOL *)&AppMemPoolFromHeap,
(void *) 0, /* Create pool from heap ... */
(CPU_SIZE_T ) 0u,
(MEM_POOL_BLK_QTY) 10u, /* ... with 10 blocks ... */
(CPU_SIZE_T )100u, /* ... of 100 octets each ... */
(CPU_SIZE_T ) 4u, /* ... and align each block to a 4-byte boundary. */
(CPU_SIZE_T *)&octets_reqd,
(LIB_ERR *)&err);
if (err != LIB_ERR_NONE) {
printf("COULD NOT CREATE MEMORY POOL.");
if (err == LIB_MEM_ERR_HEAP_EMPTY) {
printf("Heap empty ... %u more octets needed.", octets_reqd);
}
return;
}
Mem_PoolCreate((MEM_POOL *)&AppMemPoolFromUserMemSeg,
(void *)0x21000000, /* Create pool from memory at 0x21000000 ... */
(CPU_SIZE_T )10000u, /* ... from a 10000-octet segment ... */
(MEM_POOL_BLK_QTY) 10u, /* ... with 10 blocks ... */
(CPU_SIZE_T ) 100u, /* ... of 1 00 octets each ... */
(CPU_SIZE_T ) 4u, /* ... and align each block to a 4-byte boundary. */
(CPU_SIZE_T *)&octets_reqd,
(LIB_ERR *)&err);
if (err != LIB_ERR_NONE) {
printf("COULD NOT CREATE MEMORY POOL.");
if (err == LIB_MEM_ERR_HEAP_EMPTY) {
printf("Heap empty ... %u more octets needed.", octets_reqd);
} else if (err == LIB_MEM_ERR_SEG_EMPTY) {
printf("Segment empty ... %u more octets needed.", octets_reqd);
}
return;
} |