/* * Copyright ( c ) 2015 , 2019 and or affiliates All rights reserved * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER . * * This code is free software ; you can redistribute it and / or modify it * under the terms of the GNU General Public License version 2 only * published by Free Software Foundation . * published by the Free Software Foundation . * * This code is distributed in the hope that it will be useful , but WITHOUT * ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License * version 2 for more details ( a copy is included in the LICENSE file that * accompanied this code ) . * * You should have received a copy of the GNU General Public License version * 2 along with this work ; if not , write to the Free Software Foundation , * Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA . * * Please contact * or visit www . . com if you need additional information or any or visit www . oracle . com if you need additional information or have any * questions . uint8_t ZLoadBarrierNoKeepalive = 8 # ifndef SHARE_GC_Z_C2_ZBARRIERSETC2_HPP # define SHARE_GC_Z_C2_ZBARRIERSETC2_HPP # include " gc / shared / c2 / barrierSetC2 . hpp " # include " memory / allocation . hpp " # include " / node . hpp " # include " utilities / growableArray . hpp " const uint8_t ZLoadBarrierElided = ; const uint8_t ZLoadBarrierStrong = 1 ; const uint8_t ZLoadBarrierWeak = 2 ; const uint8_t ZLoadBarrierPhantom = 4 ; nst ZLoadBarrierNoKeepalive = 8 ; class ZLoadBarrierStubC2 : public ArenaObj { private : const MachNode * _ node ; const Address _ ref_addr ; const Register _ ref ; const Register _ tmp ; const uint8_t _ barrier_data ; Label _ entry ; Label _ continuation ; ZLoadBarrierStubC2 ( bool is_clone_instance , public : static ZLoadBarrierStubC2 * create ( const MachNode * node , Address ref_addr , Register void clone_at_expansion PhaseMacroExpand * phase , Address ref_addr ( ) const ; Register ref ( ) const ; Register tmp ( ) const ; address slow_path ( ) const ; RegMask & live ( ) const ; Label * entry ( ) ; Label * continuation ( ) ; } ; class ZBarrierSetC2 : public BarrierSetC2 { private : void compute_liveness_at_stubs ( ) const ; void analyze_dominating_barriers ( ) const ; protected : virtual Node * load_at_resolved ( C2Access & access , const Type * val_type ) const ; virtual Node * atomic_cmpxchg_val_at_resolved ( C2AtomicParseAccess & access , Node * expected_val , Node * new_val , const Type * val_type ) const ; virtual Node * atomic_cmpxchg_bool_at_resolved ( C2AtomicParseAccess & access , Node * expected_val , Node * new_val , const Type * value_type ) const ; virtual Node * atomic_xchg_at_resolved ( C2AtomicParseAccess & access , Node * new_val , const Type * val_type ) const ; public : virtual void * create_barrier_state ( Arena * comp_arena ) const ; virtual bool array_copy_requires_gc_barriers ( bool tightly_coupled_alloc , BasicType type , bool is_clone , bool is_clone_instance , ArrayCopyPhase phase ) const ; virtual void clone_at_expansion ( PhaseMacroExpand * phase , ArrayCopyNode * ac ) const ; virtual void late_barrier_analysis ( ) const ; virtual int estimate_stub_size ( ) const ; virtual void emit_stubs ( CodeBuffer & cb ) const ; } ; # endif // SHARE_GC_Z_C2_ZBARRIERSETC2_HPP
Messung V0.5 in Prozent C=97 H=100 G=98
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