author | pliden |
Mon, 18 Mar 2019 11:50:40 +0100 | |
changeset 54167 | d0d26fc836dd |
parent 52939 | 9a8585f60c32 |
child 58066 | 8407928b9fe5 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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#ifndef SHARE_GC_Z_ZBARRIER_HPP |
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#define SHARE_GC_Z_ZBARRIER_HPP |
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#include "memory/allocation.hpp" |
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#include "oops/oop.hpp" |
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typedef bool (*ZBarrierFastPath)(uintptr_t); |
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typedef uintptr_t (*ZBarrierSlowPath)(uintptr_t); |
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class ZBarrier : public AllStatic { |
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private: |
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static const bool Strong = false; |
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static const bool Finalizable = true; |
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static const bool Publish = true; |
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static const bool Overflow = false; |
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template <ZBarrierFastPath fast_path, ZBarrierSlowPath slow_path> static oop barrier(volatile oop* p, oop o); |
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template <ZBarrierFastPath fast_path, ZBarrierSlowPath slow_path> static oop weak_barrier(volatile oop* p, oop o); |
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template <ZBarrierFastPath fast_path, ZBarrierSlowPath slow_path> static void root_barrier(oop* p, oop o); |
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static bool is_null_fast_path(uintptr_t addr); |
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static bool is_good_or_null_fast_path(uintptr_t addr); |
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static bool is_weak_good_or_null_fast_path(uintptr_t addr); |
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static bool is_resurrection_blocked(volatile oop* p, oop* o); |
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static bool during_mark(); |
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static bool during_relocate(); |
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template <bool finalizable> static bool should_mark_through(uintptr_t addr); |
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template <bool finalizable, bool publish> static uintptr_t mark(uintptr_t addr); |
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static uintptr_t remap(uintptr_t addr); |
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static uintptr_t relocate(uintptr_t addr); |
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static uintptr_t relocate_or_mark(uintptr_t addr); |
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static uintptr_t relocate_or_remap(uintptr_t addr); |
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static uintptr_t load_barrier_on_oop_slow_path(uintptr_t addr); |
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static uintptr_t weak_load_barrier_on_oop_slow_path(uintptr_t addr); |
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static uintptr_t weak_load_barrier_on_weak_oop_slow_path(uintptr_t addr); |
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static uintptr_t weak_load_barrier_on_phantom_oop_slow_path(uintptr_t addr); |
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static uintptr_t keep_alive_barrier_on_weak_oop_slow_path(uintptr_t addr); |
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static uintptr_t keep_alive_barrier_on_phantom_oop_slow_path(uintptr_t addr); |
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static uintptr_t mark_barrier_on_oop_slow_path(uintptr_t addr); |
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static uintptr_t mark_barrier_on_finalizable_oop_slow_path(uintptr_t addr); |
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static uintptr_t mark_barrier_on_root_oop_slow_path(uintptr_t addr); |
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static uintptr_t relocate_barrier_on_root_oop_slow_path(uintptr_t addr); |
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public: |
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// Load barrier |
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static oop load_barrier_on_oop(oop o); |
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static oop load_barrier_on_oop_field(volatile oop* p); |
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static oop load_barrier_on_oop_field_preloaded(volatile oop* p, oop o); |
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static void load_barrier_on_oop_array(volatile oop* p, size_t length); |
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static void load_barrier_on_oop_fields(oop o); |
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static oop load_barrier_on_weak_oop_field_preloaded(volatile oop* p, oop o); |
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static oop load_barrier_on_phantom_oop_field_preloaded(volatile oop* p, oop o); |
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static void load_barrier_on_root_oop_field(oop* p); |
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// Weak load barrier |
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static oop weak_load_barrier_on_oop_field(volatile oop* p); |
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static oop weak_load_barrier_on_oop_field_preloaded(volatile oop* p, oop o); |
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static oop weak_load_barrier_on_weak_oop(oop o); |
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static oop weak_load_barrier_on_weak_oop_field(volatile oop* p); |
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static oop weak_load_barrier_on_weak_oop_field_preloaded(volatile oop* p, oop o); |
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static oop weak_load_barrier_on_phantom_oop(oop o); |
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static oop weak_load_barrier_on_phantom_oop_field(volatile oop* p); |
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static oop weak_load_barrier_on_phantom_oop_field_preloaded(volatile oop* p, oop o); |
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// Is alive barrier |
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static bool is_alive_barrier_on_weak_oop(oop o); |
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static bool is_alive_barrier_on_phantom_oop(oop o); |
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// Keep alive barrier |
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static void keep_alive_barrier_on_weak_oop_field(volatile oop* p); |
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static void keep_alive_barrier_on_phantom_oop_field(volatile oop* p); |
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static void keep_alive_barrier_on_phantom_root_oop_field(oop* p); |
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// Mark barrier |
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static void mark_barrier_on_oop_field(volatile oop* p, bool finalizable); |
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static void mark_barrier_on_oop_array(volatile oop* p, size_t length, bool finalizable); |
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static void mark_barrier_on_root_oop_field(oop* p); |
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// Relocate barrier |
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static void relocate_barrier_on_root_oop_field(oop* p); |
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// Narrow oop variants, never used. |
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static oop load_barrier_on_oop_field(volatile narrowOop* p); |
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static oop load_barrier_on_oop_field_preloaded(volatile narrowOop* p, oop o); |
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static void load_barrier_on_oop_array(volatile narrowOop* p, size_t length); |
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static oop load_barrier_on_weak_oop_field_preloaded(volatile narrowOop* p, oop o); |
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static oop load_barrier_on_phantom_oop_field_preloaded(volatile narrowOop* p, oop o); |
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static oop weak_load_barrier_on_oop_field_preloaded(volatile narrowOop* p, oop o); |
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static oop weak_load_barrier_on_weak_oop_field_preloaded(volatile narrowOop* p, oop o); |
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static oop weak_load_barrier_on_phantom_oop_field_preloaded(volatile narrowOop* p, oop o); |
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}; |
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#endif // SHARE_GC_Z_ZBARRIER_HPP |