1 /*
   2  * Copyright (c) 2015, 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 CPU_X86_VM_C2_SAFEPOINTTABLE_x86_64_HPP
  26 #define CPU_X86_VM_C2_SAFEPOINTTABLE_x86_64_HPP
  27 
  28 #define THREAD_LOCAL_SAFEPOINT_SUPPORT 1
  29 
  30 #include "asm/macroAssembler.hpp"
  31 #include "utilities/growableArray.hpp"
  32 
  33 class ThreadLocalSafepointTable {
  34 private:
  35   struct ThreadLocalSafepointEntry : public ResourceObj {
  36     InternalAddress _safepoint_addr;
  37     Label _stub_label;
  38     bool _is_return;
  39     ThreadLocalSafepointEntry(InternalAddress safepoint_addr, bool is_return) : _safepoint_addr(safepoint_addr), _is_return(is_return) {}
  40   };
  41   GrowableArray<ThreadLocalSafepointEntry*> _safepoints;
  42 
  43 public:
  44   Label &add_safepoint(InternalAddress safepoint_addr, bool is_return);
  45 
  46   int stub_size();
  47   void emit(CodeBuffer &cb, bool has_wide_vectors);
  48 };
  49 
  50 #endif /* CPU_X86_VM_C2_SAFEPOINTTABLE_x86_64_HPP */