Function check_and_alloc_branch

modules/tm/t_fwd.c:290–311

int check_and_alloc_branch(struct cell *t, unsigned short branch)
{
	int i, b_chunk;

	/* do we have the branch chunk allocated? */
	b_chunk = branch / TM_BRANCH_CHUNK_SIZE;
	if (t->uac[b_chunk]==NULL) {
		t->uac[b_chunk] =
			shm_malloc( TM_BRANCH_CHUNK_SIZE * sizeof(struct ua_client) );
		if (t->uac[b_chunk]==NULL) {
			LM_ERR("failed to allocate a new chunk of branch, idx is %d\n",
				branch);
			return E_OUT_OF_MEM;
		}
		memset( t->uac[b_chunk], 0,
			TM_BRANCH_CHUNK_SIZE * sizeof(struct ua_client) );
		/* the new chunk is in place, we are good to go */
		for ( i=branch; i<branch+TM_BRANCH_CHUNK_SIZE; i++)
			init_branch( &TM_BRANCH(t,i), i, t->wait_tl.set, t);
	}
	return 0;
}