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Prerequisite: Dynamic memory has been configured in the menuconfig menu.
In the programming example, the following steps will be performed:
#define TEST_POOL_SIZE (2*1024*1024)
UINT8 g_testPool[TEST_POOL_SIZE];
VOID Example_DynMem(VOID)
{
UINT32 *mem = NULL;
UINT32 ret;
ret = LOS_MemInit(g_testPool, TEST_POOL_SIZE);
if (LOS_OK == ret) {
dprintf("The memory pool is successfully initialized.\n");
} else {
dprintf("Failed to initialize the memory pool.\n");
return;
}
/*Allocate memory.*/
mem = (UINT32 *)LOS_MemAlloc(g_testPool, 4);
if (NULL == mem) {
dprintf("Failed to allocate memory.\n");
return;
}
dprintf("Memory is successfully allocated.\n");
/*Assign a value.*/
*mem = 828;
dprintf("*mem = %d\n", *mem);
/*Free up memory.*/
ret = LOS_MemFree(g_testPool, mem);
if (LOS_OK == ret) {
dprintf("Memory is successfully freed up.\n");
} else {
dprintf("Failed to free up memory.\n");
}
return;
}
The verification result is as follows:
The memory pool is successfully initialized.
Memory is successfully allocated.
*mem = 828
Memory is successfully freed up.
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