1 /*
   2  * Copyright (c) 1997, 2019, 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 OS_WINDOWS_OSTHREAD_WINDOWS_HPP
  26 #define OS_WINDOWS_OSTHREAD_WINDOWS_HPP
  27 
  28   typedef void* HANDLE;
  29  public:
  30   typedef unsigned long thread_id_t;
  31 
  32  private:
  33   // Win32-specific thread information
  34   HANDLE _thread_handle;        // Win32 thread handle
  35   HANDLE _interrupt_event;      // Event signalled on thread interrupt
  36   ThreadState _last_state;
  37 
  38  public:
  39   // The following will only apply in the Win32 implementation, and should only
  40   // be visible in the concrete class, not this which should be an abstract base class
  41   HANDLE thread_handle() const                     { return _thread_handle; }
  42   void set_thread_handle(HANDLE handle)            { _thread_handle = handle; }
  43   HANDLE interrupt_event() const                   { return _interrupt_event; }
  44   void set_interrupt_event(HANDLE interrupt_event) { _interrupt_event = interrupt_event; }
  45 
  46 #ifndef PRODUCT
  47   // Used for debugging, return a unique integer for each thread.
  48   int thread_identifier() const                    { return _thread_id; }
  49 #endif
  50 #ifdef ASSERT
  51   // We expect no reposition failures so kill vm if we get one
  52   //
  53   bool valid_reposition_failure() {
  54     return false;
  55   }
  56 #endif // ASSERT
  57   bool is_try_mutex_enter()                        { return false; }
  58 
  59   // This is a temporary fix for the thread states during
  60   // suspend/resume until we throw away OSThread completely.
  61   // NEEDS_CLEANUP
  62   void set_last_state(ThreadState state)           { _last_state = state; }
  63   ThreadState get_last_state()                     { return _last_state; }
  64 
  65  private:
  66   void pd_initialize();
  67   void pd_destroy();
  68 
  69 #endif // OS_WINDOWS_OSTHREAD_WINDOWS_HPP