1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #ifndef SHARE_GC_Z_ZTHREADLOCALDATA_HPP 25 #define SHARE_GC_Z_ZTHREADLOCALDATA_HPP 26 27 #include "gc/z/zMarkStack.hpp" 28 #include "gc/z/zGlobals.hpp" 29 #include "runtime/thread.hpp" 30 #include "utilities/debug.hpp" 31 #include "utilities/sizes.hpp" 32 33 class ZThreadLocalData { 34 private: 35 uintptr_t _address_bad_mask; 36 ZMarkThreadLocalStacks _stacks; 37 oop* _invisible_root; 38 39 ZThreadLocalData() : 40 _address_bad_mask(0), 41 _stacks(), 42 _invisible_root(NULL) {} 43 44 static ZThreadLocalData* data(Thread* thread) { 45 return thread->gc_data<ZThreadLocalData>(); 46 } 47 48 public: 49 static void create(Thread* thread) { 50 new (data(thread)) ZThreadLocalData(); 51 } 52 53 static void destroy(Thread* thread) { 54 data(thread)->~ZThreadLocalData(); 55 } 56 57 static void set_address_bad_mask(Thread* thread, uintptr_t mask) { 58 data(thread)->_address_bad_mask = mask; 59 } 60 61 static ZMarkThreadLocalStacks* stacks(Thread* thread) { 62 return &data(thread)->_stacks; 63 } 64 65 static void set_invisible_root(Thread* thread, oop* root) { 66 assert(!has_invisible_root(thread), "Already set"); 67 data(thread)->_invisible_root = root; 68 } 69 70 static void clear_invisible_root(Thread* thread) { 71 assert(has_invisible_root(thread), "Should be set"); 72 data(thread)->_invisible_root = NULL; 73 } 74 75 static bool has_invisible_root(Thread* thread) { 76 return data(thread)->_invisible_root != NULL; 77 } 78 79 static oop* invisible_root(Thread* thread) { 80 assert(has_invisible_root(thread), "Should be set"); 81 return data(thread)->_invisible_root; 82 } 83 84 static ByteSize address_bad_mask_offset() { 85 return Thread::gc_data_offset() + byte_offset_of(ZThreadLocalData, _address_bad_mask); 86 } 87 88 static ByteSize nmethod_disarmed_offset() { 89 return address_bad_mask_offset() + in_ByteSize(ZNMethodDisarmedOffset); 90 } 91 }; 92 93 #endif // SHARE_GC_Z_ZTHREADLOCALDATA_HPP