1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#ifndef ART_RUNTIME_READ_BARRIER_C_H_ 18#define ART_RUNTIME_READ_BARRIER_C_H_ 19 20// This is a C (not C++) header file and is in a separate file (from 21// globals.h) because asm_support.h is a C header file and can't 22// include globals.h. 23 24// Uncomment one of the following two and the two fields in 25// Object.java (libcore) to enable baker, brooks (unimplemented), or 26// table-lookup read barriers. 27 28#ifdef ART_USE_READ_BARRIER 29#define USE_BAKER_READ_BARRIER 30// #define USE_BROOKS_READ_BARRIER 31// #define USE_TABLE_LOOKUP_READ_BARRIER 32#endif 33 34#if defined(USE_BAKER_READ_BARRIER) || defined(USE_BROOKS_READ_BARRIER) 35#define USE_BAKER_OR_BROOKS_READ_BARRIER 36#endif 37 38#if defined(USE_BAKER_READ_BARRIER) || defined(USE_BROOKS_READ_BARRIER) || defined(USE_TABLE_LOOKUP_READ_BARRIER) 39#define USE_READ_BARRIER 40#endif 41 42#if defined(USE_BAKER_READ_BARRIER) && defined(USE_BROOKS_READ_BARRIER) 43#error "Only one of Baker or Brooks can be enabled at a time." 44#endif 45 46// A placeholder marker to indicate places to add read barriers in the 47// assembly code. This is a development time aid and to be removed 48// after read barriers are added. 49#define THIS_LOAD_REQUIRES_READ_BARRIER 50 51#endif // ART_RUNTIME_READ_BARRIER_C_H_ 52