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Don't allocate DBusTimeout for pending call when passed INT_MAX

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* dbus/dbus-pending-call.c (_dbus_pending_call_new_unlocked): When passed
  INT_MAX, do not clamp the value and do not allocate a timeout for the call
  (_dbus_pending_call_get_timeout_unlocked): Document that this may return
  NULL.

Signed-off-by: Scott James Remnant <scott@ubuntu.com>
This commit is contained in:
Scott James Remnant 2009-05-11 22:40:38 +01:00
parent e5eb472d11
commit 92dd55c903
1 changed files with 24 additions and 19 deletions
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43
dbus/dbus-pending-call.c
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@ -83,7 +83,7 @@ static dbus_int32_t notify_user_data_slot = -1;
* Creates a new pending reply object.
*
* @param connection connection where reply will arrive
* @param timeout_milliseconds length of timeout, -1 for default
* @param timeout_milliseconds length of timeout, -1 for default, INT_MAX for no timeout
* @param timeout_handler timeout handler, takes pending call as data
* @returns a new #DBusPendingCall or #NULL if no memory.
*/
@ -100,12 +100,11 @@ _dbus_pending_call_new_unlocked (DBusConnection *connection,
if (timeout_milliseconds == -1)
timeout_milliseconds = _DBUS_DEFAULT_TIMEOUT_VALUE;
/* it would probably seem logical to pass in _DBUS_INT_MAX for
* infinite timeout, but then math in
* _dbus_connection_block_for_reply would get all overflow-prone, so
* smack that down.
/* clamp the timeout otherwise math in
* _dbus_connection_block_for_reply would get all overflow-prone
*/
if (timeout_milliseconds > _DBUS_ONE_HOUR_IN_MILLISECONDS * 6)
if ((timeout_milliseconds > _DBUS_ONE_HOUR_IN_MILLISECONDS * 6) &&
(timeout_milliseconds < _DBUS_INT_MAX))
timeout_milliseconds = _DBUS_ONE_HOUR_IN_MILLISECONDS * 6;
if (!dbus_pending_call_allocate_data_slot (&notify_user_data_slot))
@ -119,24 +118,30 @@ _dbus_pending_call_new_unlocked (DBusConnection *connection,
return NULL;
}
timeout = _dbus_timeout_new (timeout_milliseconds,
timeout_handler,
pending, NULL);
if (timeout == NULL)
if (timeout_milliseconds != _DBUS_INT_MAX)
{
dbus_pending_call_free_data_slot (&notify_user_data_slot);
dbus_free (pending);
return NULL;
timeout = _dbus_timeout_new (timeout_milliseconds,
timeout_handler,
pending, NULL);
if (timeout == NULL)
{
dbus_pending_call_free_data_slot (&notify_user_data_slot);
dbus_free (pending);
return NULL;
}
pending->timeout = timeout;
}
else
{
pending->timeout = NULL;
}
pending->refcount.value = 1;
pending->connection = connection;
_dbus_connection_ref_unlocked (pending->connection);
pending->timeout = timeout;
_dbus_data_slot_list_init (&pending->slot_list);
return pending;
@ -255,7 +260,7 @@ _dbus_pending_call_set_timeout_added_unlocked (DBusPendingCall *pending,
* Retrives the timeout
*
* @param pending the pending_call
* @returns a timeout object
* @returns a timeout object or NULL if call has no timeout
*/
DBusTimeout *
_dbus_pending_call_get_timeout_unlocked (DBusPendingCall *pending)