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osmo-bsc
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[msgb] Add msgb_reset to reset an existing msgb* to the initial state 

The reset is useful if one msgb is supposed to be used over and
over again and is avoiding to use msgb_free,msgb_alloc in the
application code.
This commit is contained in:
Holger Hans Peter Freyther 2009-10-09 07:33:36 +02:00
parent 77a838dff7
commit cbbd49807f
2 changed files with 21 additions and 0 deletions
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1
openbsc/include/openbsc/msgb.h
View File

@ -51,6 +51,7 @@ extern struct msgb *msgb_alloc(u_int16_t size, const char *name);
extern void msgb_free(struct msgb *m);
extern void msgb_enqueue(struct llist_head *queue, struct msgb *msg);
extern struct msgb *msgb_dequeue(struct llist_head *queue);
extern void msgb_reset(struct msgb *m);
#define msgb_l2(m) ((void *)(m->l2h))
#define msgb_l3(m) ((void *)(m->l3h))

20
openbsc/src/msgb.c
View File

@ -74,6 +74,26 @@ struct msgb *msgb_dequeue(struct llist_head *queue)
return llist_entry(lh, struct msgb, list);
}
void msgb_reset(struct msgb *msg)
{
msg->len = 0;
msg->len = 0;
msg->data = msg->_data;
msg->head = msg->data;
msg->data = msg->data;
/* reset tail pointer */
msg->tail = msg->data;
/* reset pointers */
msg->bts_link = NULL;
msg->trx = NULL;
msg->lchan = NULL;
msg->l2h = NULL;
msg->l3h = NULL;
msg->smsh = NULL;
}
static __attribute__((constructor)) void on_dso_load_trau_msgb(void)
{
tall_msgb_ctx = talloc_named_const(tall_bsc_ctx, 1, "msgb");