1 /* 2 * Copyright (c) 2017, 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 25 #ifndef SHARE_VM_CODE_COMPILEDMETHOD_INLINE_HPP 26 #define SHARE_VM_CODE_COMPILEDMETHOD_INLINE_HPP 27 28 #include "code/compiledMethod.hpp" 29 #include "code/nativeInst.hpp" 30 #include "runtime/frame.hpp" 31 #include "runtime/orderAccess.hpp" 32 33 inline bool CompiledMethod::is_deopt_pc(address pc) { return is_deopt_entry(pc) || is_deopt_mh_entry(pc); } 34 35 // When using JVMCI the address might be off by the size of a call instruction. 36 inline bool CompiledMethod::is_deopt_entry(address pc) { 37 return pc == deopt_handler_begin() 38 #if INCLUDE_JVMCI 39 || (is_compiled_by_jvmci() && pc == (deopt_handler_begin() + NativeCall::instruction_size)) 40 #endif 41 ; 42 } 43 44 inline void CompiledMethod::release_set_exception_cache(ExceptionCache *ec) { 45 OrderAccess::release_store(&_exception_cache, ec); 46 } 47 48 // ----------------------------------------------------------------------------- 49 // CompiledMethod::get_deopt_original_pc 50 // 51 // Return the original PC for the given PC if: 52 // (a) the given PC belongs to a nmethod and 53 // (b) it is a deopt PC 54 55 inline address CompiledMethod::get_deopt_original_pc(const frame* fr) { 56 if (fr->cb() == NULL) return NULL; 57 58 CompiledMethod* cm = fr->cb()->as_compiled_method_or_null(); 59 if (cm != NULL && cm->is_deopt_pc(fr->pc())) 60 return cm->get_original_pc(fr); 61 62 return NULL; 63 } 64 65 66 // class ExceptionCache methods 67 68 inline int ExceptionCache::count() { return OrderAccess::load_acquire(&_count); } 69 70 address ExceptionCache::pc_at(int index) { 71 assert(index >= 0 && index < count(),""); 72 return _pc[index]; 73 } 74 75 address ExceptionCache::handler_at(int index) { 76 assert(index >= 0 && index < count(),""); 77 return _handler[index]; 78 } 79 80 // increment_count is only called under lock, but there may be concurrent readers. 81 inline void ExceptionCache::increment_count() { OrderAccess::release_store(&_count, _count + 1); } 82 83 84 #endif //SHARE_VM_CODE_COMPILEDMETHOD_INLINE_HPP