update

src/hotspot/share/gc/shared/barrierSetConfig.hpp

@@ -35,7 +35,8 @@
   SHENANDOAHGC_ONLY(f(ShenandoahBarrierSet))         \
   ZGC_ONLY(f(XBarrierSet))                           \
   ZGC_ONLY(f(ZBarrierSet))                           \
-  GCTK_ONLY(f(ThirdPartyBarrierSet))
+  GCTK_ONLY(f(ThirdPartyBarrierSet))                 \
+  GCTK_ONLY(f(ThirdPartyCardTableBarrierSet))
 
 #define FOR_EACH_ABSTRACT_BARRIER_SET_DO(f)          \
   f(ModRef)

src/hotspot/share/gc/shared/cardTable.cpp

@@ -44,7 +44,7 @@ uint CardTable::_card_size = 0;
 uint CardTable::_card_size_in_words = 0;
 
 void CardTable::initialize_card_size() {
-  assert(UseG1GC || UseParallelGC || UseSerialGC,
+  assert(UseG1GC || UseParallelGC || UseSerialGC || EnableThirdPartyGCs,
          "Initialize card size should only be called by card based collectors.");
 
   _card_size = GCCardSizeInBytes;

src/hotspot/share/gc/shared/gctk/gcPlan.hpp

@@ -33,7 +33,9 @@ class MemoryPool;
 class GCPlan: public CHeapObj<mtGC> {
 public:
   virtual bool moves_objects() = 0;
-
+
+  virtual size_t heap_alignment();
+  virtual size_t space_alignment();
 };
 
 

src/hotspot/share/gc/shared/gctk/thirdPartyBarrierSet.hpp

@@ -25,10 +25,12 @@
 #define SHARE_GC_SHARED_GCTK_THIRDPARTYBARRIERSET_HPP
 
 #include "gc/shared/barrierSet.hpp"
+#include "gc/shared/cardTableBarrierSet.inline.hpp"
 
+// The default third party barrier set does nothing.
+// To define ones that qualify for your own plans,
+// please follow the guide written in 'barrierSet.hpp'.
 class ThirdPartyBarrierSet: public BarrierSet {
-  friend class VMStructs;
-
 public:
   ThirdPartyBarrierSet();
 
@@ -37,8 +39,10 @@ class ThirdPartyBarrierSet: public BarrierSet {
   virtual void on_thread_create(Thread* thread);
   virtual void on_thread_destroy(Thread* thread);
 
-  template <DecoratorSet decorators, typename BarrierSetT = ThirdPartyBarrierSet>
-  class AccessBarrier: public BarrierSet::AccessBarrier<decorators, BarrierSetT> {};
+  template <DecoratorSet decorators, typename BarrierSetT =
+                                       ThirdPartyBarrierSet>
+  class AccessBarrier: public BarrierSet::AccessBarrier<decorators,
+                                                        BarrierSetT> {};
 };
 
 template<>
@@ -51,6 +55,29 @@ struct BarrierSet::GetType<BarrierSet::ThirdPartyBarrierSet> {
   typedef ::ThirdPartyBarrierSet type;
 };
 
+class ThirdPartyCardTableBarrierSet: public CardTableBarrierSet {
+public:
+  ThirdPartyCardTableBarrierSet();
+
+  void on_thread_create(Thread* thread) override;
+  void on_thread_destroy(Thread* thread) override;
+
+  template <DecoratorSet decorators, typename BarrierSetT =
+                                       ThirdPartyCardTableBarrierSet>
+  class AccessBarrier: public BarrierSet::AccessBarrier<decorators,
+                                                        BarrierSetT> {};
+};
+
+template<>
+struct BarrierSet::GetName<ThirdPartyCardTableBarrierSet> {
+  static const BarrierSet::Name value =
+    BarrierSet::ThirdPartyCardTableBarrierSet;
+};
+
+template<>
+struct BarrierSet::GetType<BarrierSet::ThirdPartyCardTableBarrierSet> {
+  typedef ::ThirdPartyBarrierSet type;
+};
 
 #endif // SHARE_GC_SHARED_GCTK_THIRDPARTYBARRIERSET_HPP
 

src/hotspot/share/gc/shared/gctk/thirdPartyGCInitLogger.hpp

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2024, Lei Zaakjyu. 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 Lei Zaakjyu(E-mail: leizaakjyu@163.com) if you need additional
+ * information or have any questions.
+ *
+ */
+
+#ifndef SHARE_GC_SHARED_GCTK_THIRDPARTYGCINITLOGGER_HPP
+#define SHARE_GC_SHARED_GCTK_THIRDPARTYGCINITLOGGER_HPP
+
+#include "gc/shared/gcInitLogger.hpp"
+
+class ThirdPartyGCInitLogger : public GCInitLogger {};
+
+
+#endif // SHARE_GC_SHARED_GCTK_THIRDPARTYGCINITLOGGER_HPP