Printable View
how would i go about freeing
Because I read that I would have to free it inner parts at a time. But I saw someone use bzero() and not sure if that works.... And whats the difference when uCode:struct Ethfrm_t
{
struct FCfrm_t* ptr;
unsigned char DestEthAdr[6];
unsigned char SrcEthAdr[6];
UINT32 VLAN_HdrSave;
UINT32 reserved;
UINT32 pad;
unsigned char Ethbuffer[BUF_SIZE];
} __attribute__ ((packed));
free( variable)
free(&variable)
That is correct. You need to free up the data inside the structure before freeing the structure itself.Quote:
Because I read that I would have to free it inner parts at a time.
free(variable) is correct, the other is probably wrong.Quote:
And whats the difference when u
free( variable)
free(&variable)
If you malloc'ed struct FCFrm_t* ptr, you will have to free that before it goes away. That's the only pointer inside the struct. Bzero doesn't free anything, or release anything, it just sets it to zero.
You should free exactly what you allocated with malloc. If you allocated the whole structure in one call to malloc, you should free it with one call to free.
Any pointers in the structure which were themselves set to the result of a malloc call should be freed separately (this should be done before freeing the parent structure, so the pointer itself is not invalid).
for the Pointer i just did
Ethfrm->ptr = (struct FCfrm_t *)(&Ethfrm->pad);
Do i still need to free that separately?
The only malloc i did was Ethfrm = malloc(sizeof(*Ethfrm));
So i guess I should just free(Ethfrm);
Nope. No use of malloc or calloc there.Quote:
Originally Posted by kiros88
Correct.Quote:
The only malloc i did was Ethfrm = malloc(sizeof(*Ethfrm));
So i guess I should just free(Ethfrm);