static dbus_bool_t
_dbus_condvar_wait_win32 (DBusCondVar *cond,
DBusMutex *mutex,
int milliseconds)
{
DWORD retval;
dbus_bool_t ret;
HANDLE event = TlsGetValue (dbus_cond_event_tls);
if (!event)
{
event = CreateEvent (0, FALSE, FALSE, NULL);
if (event == 0)
return FALSE;
TlsSetValue (dbus_cond_event_tls, event);
}
EnterCriticalSection (&cond->lock);
/* The event must not be signaled. Check this */
_dbus_assert (WaitForSingleObject (event, 0) == WAIT_TIMEOUT);
ret = _dbus_list_append (&cond->list, event);
LeaveCriticalSection (&cond->lock);
if (!ret)
return FALSE; /* Prepend failed */
_dbus_mutex_unlock (mutex);
retval = WaitForSingleObject (event, milliseconds);
_dbus_mutex_lock (mutex);
if (retval == WAIT_TIMEOUT)
{
EnterCriticalSection (&cond->lock);
_dbus_list_remove (&cond->list, event);
/* In the meantime we could have been signaled, so we must again
* wait for the signal, this time with no timeout, to reset
* it. retval is set again to honour the late arrival of the
* signal */
retval = WaitForSingleObject (event, 0);
LeaveCriticalSection (&cond->lock);
}
#ifndef DBUS_DISABLE_ASSERT
EnterCriticalSection (&cond->lock);
/* Now event must not be inside the array, check this */
_dbus_assert (_dbus_list_remove (&cond->list, event) == FALSE);
LeaveCriticalSection (&cond->lock);
#endif /* !G_DISABLE_ASSERT */
return retval != WAIT_TIMEOUT;
}
void
_dbus_data_slot_allocator_free (DBusDataSlotAllocator *allocator,
dbus_int32_t *slot_id_p)
{
_dbus_mutex_lock (*(allocator->lock_loc));
_dbus_assert (*slot_id_p < allocator->n_allocated_slots);
_dbus_assert (allocator->allocated_slots[*slot_id_p].slot_id == *slot_id_p);
_dbus_assert (allocator->allocated_slots[*slot_id_p].refcount > 0);
allocator->allocated_slots[*slot_id_p].refcount -= 1;
if (allocator->allocated_slots[*slot_id_p].refcount > 0)
{
_dbus_mutex_unlock (*(allocator->lock_loc));
return;
}
/* refcount is 0, free the slot */
_dbus_verbose ("Freeing slot %d on allocator %p total %d allocated %d used\n",
*slot_id_p, allocator, allocator->n_allocated_slots, allocator->n_used_slots);
allocator->allocated_slots[*slot_id_p].slot_id = -1;
*slot_id_p = -1;
allocator->n_used_slots -= 1;
if (allocator->n_used_slots == 0)
{
DBusMutex **mutex_loc = allocator->lock_loc;
dbus_free (allocator->allocated_slots);
allocator->allocated_slots = NULL;
allocator->n_allocated_slots = 0;
allocator->lock_loc = NULL;
_dbus_mutex_unlock (*mutex_loc);
}
else
{
_dbus_mutex_unlock (*(allocator->lock_loc));
}
}
dbus_bool_t
_dbus_data_slot_list_set (DBusDataSlotAllocator *allocator,
DBusDataSlotList *list,
int slot,
void *data,
DBusFreeFunction free_data_func,
DBusFreeFunction *old_free_func,
void **old_data)
{
#ifndef DBUS_DISABLE_ASSERT
/* We need to take the allocator lock here, because the allocator could
* be e.g. realloc()ing allocated_slots. We avoid doing this if asserts
* are disabled, since then the asserts are empty.
*/
_dbus_mutex_lock (*(allocator->lock_loc));
_dbus_assert (slot < allocator->n_allocated_slots);
_dbus_assert (allocator->allocated_slots[slot].slot_id == slot);
_dbus_mutex_unlock (*(allocator->lock_loc));
#endif
if (slot >= list->n_slots)
{
DBusDataSlot *tmp;
int i;
tmp = dbus_realloc (list->slots,
sizeof (DBusDataSlot) * (slot + 1));
if (tmp == NULL)
return FALSE;
list->slots = tmp;
i = list->n_slots;
list->n_slots = slot + 1;
while (i < list->n_slots)
{
list->slots[i].data = NULL;
list->slots[i].free_data_func = NULL;
++i;
}
}
_dbus_assert (slot < list->n_slots);
*old_data = list->slots[slot].data;
*old_free_func = list->slots[slot].free_data_func;
list->slots[slot].data = data;
list->slots[slot].free_data_func = free_data_func;
return TRUE;
}
void*
_dbus_data_slot_list_get (DBusDataSlotAllocator *allocator,
DBusDataSlotList *list,
int slot)
{
#ifndef DBUS_DISABLE_ASSERT
/* We need to take the allocator lock here, because the allocator could
* be e.g. realloc()ing allocated_slots. We avoid doing this if asserts
* are disabled, since then the asserts are empty.
*/
_dbus_mutex_lock (*(allocator->lock_loc));
_dbus_assert (slot >= 0);
_dbus_assert (slot < allocator->n_allocated_slots);
_dbus_assert (allocator->allocated_slots[slot].slot_id == slot);
_dbus_mutex_unlock (*(allocator->lock_loc));
#endif
if (slot >= list->n_slots)
return NULL;
else
return list->slots[slot].data;
}
dbus_bool_t
_dbus_data_slot_allocator_alloc (DBusDataSlotAllocator *allocator,
DBusMutex **mutex_loc,
dbus_int32_t *slot_id_p)
{
dbus_int32_t slot;
_dbus_mutex_lock (*mutex_loc);
if (allocator->n_allocated_slots == 0)
{
_dbus_assert (allocator->lock_loc == NULL);
allocator->lock_loc = mutex_loc;
}
else if (allocator->lock_loc != mutex_loc)
{
_dbus_warn_check_failed ("D-Bus threads were initialized after first using the D-Bus library. If your application does not directly initialize threads or use D-Bus, keep in mind that some library or plugin may have used D-Bus or initialized threads behind your back. You can often fix this problem by calling dbus_init_threads() or dbus_g_threads_init() early in your main() method, before D-Bus is used.\n");
_dbus_assert_not_reached ("exiting");
}
if (*slot_id_p >= 0)
{
slot = *slot_id_p;
_dbus_assert (slot < allocator->n_allocated_slots);
_dbus_assert (allocator->allocated_slots[slot].slot_id == slot);
allocator->allocated_slots[slot].refcount += 1;
goto out;
}
_dbus_assert (*slot_id_p < 0);
if (allocator->n_used_slots < allocator->n_allocated_slots)
{
slot = 0;
while (slot < allocator->n_allocated_slots)
{
if (allocator->allocated_slots[slot].slot_id < 0)
{
allocator->allocated_slots[slot].slot_id = slot;
allocator->allocated_slots[slot].refcount = 1;
allocator->n_used_slots += 1;
break;
}
++slot;
}
_dbus_assert (slot < allocator->n_allocated_slots);
}
else
{
DBusAllocatedSlot *tmp;
slot = -1;
tmp = dbus_realloc (allocator->allocated_slots,
sizeof (DBusAllocatedSlot) * (allocator->n_allocated_slots + 1));
if (tmp == NULL)
goto out;
allocator->allocated_slots = tmp;
slot = allocator->n_allocated_slots;
allocator->n_allocated_slots += 1;
allocator->n_used_slots += 1;
allocator->allocated_slots[slot].slot_id = slot;
allocator->allocated_slots[slot].refcount = 1;
}
_dbus_assert (slot >= 0);
_dbus_assert (slot < allocator->n_allocated_slots);
_dbus_assert (*slot_id_p < 0);
_dbus_assert (allocator->allocated_slots[slot].slot_id == slot);
_dbus_assert (allocator->allocated_slots[slot].refcount == 1);
*slot_id_p = slot;
_dbus_verbose ("Allocated slot %d on allocator %p total %d slots allocated %d used\n",
slot, allocator, allocator->n_allocated_slots, allocator->n_used_slots);
out:
_dbus_mutex_unlock (*(allocator->lock_loc));
return slot >= 0;
}
