gboolean
nmp_netns_pop (NMPNetns *self)
{
NetnsInfo *info;
int ns_types;
g_return_val_if_fail (NMP_IS_NETNS (self), FALSE);
_stack_ensure_init ();
info = _stack_peek ();
g_return_val_if_fail (info, FALSE);
g_return_val_if_fail (info->netns == self, FALSE);
if (info->count > 1) {
info->count--;
_LOGt (self, "pop#%u* (decrease count to %d)",
_stack_size () - 1, info->count);
return TRUE;
}
g_return_val_if_fail (info->count == 1, FALSE);
/* cannot pop the original netns. */
g_return_val_if_fail (_stack_size () > 1, FALSE);
_LOGD (self, "pop#%u", _stack_size () - 1);
ns_types = info->ns_types;
_stack_pop ();
return _netns_switch_pop (self, ns_types);
}
static gboolean
_nmp_netns_push_type (NMPNetns *self, int ns_types)
{
NetnsInfo *info;
char sbuf[100];
_stack_ensure_init ();
info = _stack_peek ();
g_return_val_if_fail (info, FALSE);
if (info->netns == self && info->ns_types == ns_types) {
info->count++;
_LOGt (self, "push#%u* %s (increase count to %d)",
_stack_size () - 1,
_ns_types_to_str (ns_types, ns_types, sbuf), info->count);
return TRUE;
}
_LOGD (self, "push#%u %s",
_stack_size (),
_ns_types_to_str (ns_types,
_stack_current_ns_types (self, ns_types),
sbuf));
if (!_netns_switch_push (self, ns_types))
return FALSE;
_stack_push (self, ns_types);
return TRUE;
}
static void
_save_stack(struct coroutine *co) {
size_t size = _stack_size(co->sched, co->stack_lowest);
assert(size <= co->sched->stack.ss_size);
co->stack_base = realloc(co->stack_base, size);
co->stack_size = size;
memcpy(co->stack_base, _stack_addr(co->sched, size), size);
}