| /* |
| * Copyright (c) 2018, Oracle and/or its 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, as |
| * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_GC_SHARED_C2_G1BARRIERSETC2_HPP |
| #define SHARE_GC_SHARED_C2_G1BARRIERSETC2_HPP |
| |
| #include "gc/shared/c2/cardTableBarrierSetC2.hpp" |
| |
| class PhaseTransform; |
| class Type; |
| class TypeFunc; |
| |
| class G1BarrierSetC2: public CardTableBarrierSetC2 { |
| protected: |
| virtual void pre_barrier(GraphKit* kit, |
| bool do_load, |
| Node* ctl, |
| Node* obj, |
| Node* adr, |
| uint adr_idx, |
| Node* val, |
| const TypeOopPtr* val_type, |
| Node* pre_val, |
| BasicType bt) const; |
| |
| virtual void post_barrier(GraphKit* kit, |
| Node* ctl, |
| Node* store, |
| Node* obj, |
| Node* adr, |
| uint adr_idx, |
| Node* val, |
| BasicType bt, |
| bool use_precise) const; |
| |
| bool g1_can_remove_pre_barrier(GraphKit* kit, |
| PhaseTransform* phase, |
| Node* adr, |
| BasicType bt, |
| uint adr_idx) const; |
| |
| bool g1_can_remove_post_barrier(GraphKit* kit, |
| PhaseTransform* phase, Node* store, |
| Node* adr) const; |
| |
| void g1_mark_card(GraphKit* kit, |
| IdealKit& ideal, |
| Node* card_adr, |
| Node* oop_store, |
| uint oop_alias_idx, |
| Node* index, |
| Node* index_adr, |
| Node* buffer, |
| const TypeFunc* tf) const; |
| |
| // Helper for unsafe accesses, that may or may not be on the referent field. |
| // Generates the guards that check whether the result of |
| // Unsafe.getObject should be recorded in an SATB log buffer. |
| void insert_pre_barrier(GraphKit* kit, Node* base_oop, Node* offset, Node* pre_val, bool need_mem_bar) const; |
| |
| static const TypeFunc* write_ref_field_pre_entry_Type(); |
| static const TypeFunc* write_ref_field_post_entry_Type(); |
| |
| virtual Node* load_at_resolved(C2Access& access, const Type* val_type) const; |
| |
| public: |
| virtual bool is_gc_barrier_node(Node* node) const; |
| virtual void eliminate_gc_barrier(PhaseMacroExpand* macro, Node* node) const; |
| virtual Node* step_over_gc_barrier(Node* c) const; |
| }; |
| |
| #endif // SHARE_GC_SHARED_C2_G1BARRIERSETC2_HPP |
