locks.h revision a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697
1a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten/* 2a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * Copyright (C) 2010 The Android Open Source Project 3a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * 4a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * Licensed under the Apache License, Version 2.0 (the "License"); 5a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * you may not use this file except in compliance with the License. 6a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * You may obtain a copy of the License at 7a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * 8a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * http://www.apache.org/licenses/LICENSE-2.0 9a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * 10a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * Unless required by applicable law or agreed to in writing, software 11a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * distributed under the License is distributed on an "AS IS" BASIS, 12a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * See the License for the specific language governing permissions and 14a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten * limitations under the License. 15a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten */ 16a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten 17a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#ifdef __cplusplus 18a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kastenextern "C" { 19a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#endif 20a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten 21a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kastenextern void object_lock_exclusive(IObject *this); 22a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kastenextern void object_unlock_exclusive(IObject *this); 23a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kastenextern void object_cond_wait(IObject *this); 24a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kastenextern void object_cond_signal(IObject *this); 25a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten 26a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#ifdef __cplusplus 27a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten} 28a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#endif 29a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten 30a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten// Currently shared locks are implemented as exclusive, but don't count on it 31a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten 32a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#define object_lock_shared(this) object_lock_exclusive(this) 33a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#define object_unlock_shared(this) object_unlock_exclusive(this) 34a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten 35a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten// Currently interface locks are actually on whole object, but don't count on it 36a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten 37a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#define interface_lock_exclusive(this) object_lock_exclusive((this)->mThis) 38a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#define interface_unlock_exclusive(this) object_unlock_exclusive((this)->mThis) 39a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#define interface_lock_shared(this) object_lock_shared((this)->mThis) 40a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#define interface_unlock_shared(this) object_unlock_shared((this)->mThis) 41a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#define interface_cond_wait(this) object_cond_wait((this)->mThis) 42a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#define interface_cond_signal(this) object_cond_signal((this)->mThis) 43a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten 44a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten// Peek and poke are an optimization for small atomic fields that don't "matter" 45a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten 46a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#define interface_lock_poke(this) /* interface_lock_exclusive(this) */ 47a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#define interface_unlock_poke(this) /* interface_unlock_exclusive(this) */ 48a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#define interface_lock_peek(this) /* interface_lock_shared(this) */ 49a6d984c32855a239f7f79a3d3b7f2ddfb8cb9697Glenn Kasten#define interface_unlock_peek(this) /* interface_unlock_shared(this) */ 50