[openbeos] Re: SK: interacting modules
- From: François Revol <revol@xxxxxxx>
- To: openbeos@xxxxxxxxxxxxx
- Date: Tue, 14 May 2002 23:26:40 +0200 (MEST)
that shouldn't be that hard...
something like
typedef struct bparam {
struct bparam *next;
char *name;
uint32 type;
int size;
char data[0]; // for sizeof()
/* union {
void* data_void;
uint32 data_uint32;
///...
} d;
*/
} bparam;
typedef struct bmessage {
uint32 what;
bparam *params;
} bmessage
status_t add_uint32(bmessage *m, char *name, uint32 i)
{
bparam *p;
p = (bparam *) malloc (sizeof(bparam) + sizeof(uint32) + strlen(name) + 1);
p->next=NULL;
p->size = sizeof(uint32);
*((uint32 *)p->data) = i;
// simplifies memory managment
strcpy((((char *)p)+(sizeof(bparam) + sizeof(uint32))), name);
p->name = (((char *)p)+(sizeof(bparam) + sizeof(uint32)));
}
status_t bmessage_flatten(bmessage *m, void *buffer, size_t *sz)
{
int size;
bparam *p;
p = m
// calc size
while (p) {
size += strlen(p->name) + 1;
size += p->size + 1; // guess ?
p = p->next;
}
size += 4; // magic number ...
if (size > *sz)
return B_NO_MEMORY; // maybe...
// flatten...
// someone knows the layout ?
}
En réponse à Ingo Weinhold <bonefish@xxxxxxxxxxxxxxx>:
> So what does that mean? I guess, that I can neither implement BQuery
> nor
> the node monitoring functions until there is a kernel that provides
> some
> functionality for that pupose. :-(
>
> CU, Ingo
>
>
>
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