1 /*
   2  * Copyright (c) 1997, 2008, 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 // Interface for thread local storage
  26 
  27 // Fast variant of ThreadLocalStorage::get_thread_slow
  28 extern "C" Thread*   get_thread();
  29 
  30 // Get raw thread id: e.g., %g7 on sparc, fs or gs on x86
  31 extern "C" uintptr_t _raw_thread_id();
  32 
  33 class ThreadLocalStorage : AllStatic {
  34  public:
  35   static void    set_thread(Thread* thread);
  36   static Thread* get_thread_slow();
  37   static void    invalidate_all() { pd_invalidate_all(); }
  38 
  39   // Machine dependent stuff
  40   #include "incls/_threadLS_pd.hpp.incl"


















  41 
  42  public:
  43   // Accessor
  44   static inline int  thread_index()              { return _thread_index; }
  45   static inline void set_thread_index(int index) { _thread_index = index; }
  46 
  47   // Initialization
  48   // Called explicitly from VMThread::activate_system instead of init_globals.
  49   static void init();
  50   static bool is_initialized();
  51 
  52  private:
  53   static int     _thread_index;
  54 
  55   static void    generate_code_for_get_thread();
  56 
  57   // Processor dependent parts of set_thread and initialization
  58   static void pd_set_thread(Thread* thread);
  59   static void pd_init();
  60   // Invalidate any thread cacheing or optimization schemes.
  61   static void pd_invalidate_all();
  62 
  63 };

   1 /*
   2  * Copyright (c) 1997, 2010, 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 SHARE_VM_RUNTIME_THREADLOCALSTORAGE_HPP
  26 #define SHARE_VM_RUNTIME_THREADLOCALSTORAGE_HPP
  27 
  28 #include "gc_implementation/shared/gcUtil.hpp"
  29 #include "runtime/os.hpp"
  30 #include "utilities/top.hpp"
  31 
  32 // Interface for thread local storage
  33 
  34 // Fast variant of ThreadLocalStorage::get_thread_slow
  35 extern "C" Thread*   get_thread();
  36 
  37 // Get raw thread id: e.g., %g7 on sparc, fs or gs on x86
  38 extern "C" uintptr_t _raw_thread_id();
  39 
  40 class ThreadLocalStorage : AllStatic {
  41  public:
  42   static void    set_thread(Thread* thread);
  43   static Thread* get_thread_slow();
  44   static void    invalidate_all() { pd_invalidate_all(); }
  45 
  46   // Machine dependent stuff
  47 #ifdef TARGET_OS_ARCH_linux_x86
  48 # include "threadLS_linux_x86.hpp"
  49 #endif
  50 #ifdef TARGET_OS_ARCH_linux_sparc
  51 # include "threadLS_linux_sparc.hpp"
  52 #endif
  53 #ifdef TARGET_OS_ARCH_linux_zero
  54 # include "threadLS_linux_zero.hpp"
  55 #endif
  56 #ifdef TARGET_OS_ARCH_solaris_x86
  57 # include "threadLS_solaris_x86.hpp"
  58 #endif
  59 #ifdef TARGET_OS_ARCH_solaris_sparc
  60 # include "threadLS_solaris_sparc.hpp"
  61 #endif
  62 #ifdef TARGET_OS_ARCH_windows_x86
  63 # include "threadLS_windows_x86.hpp"
  64 #endif
  65 
  66 
  67  public:
  68   // Accessor
  69   static inline int  thread_index()              { return _thread_index; }
  70   static inline void set_thread_index(int index) { _thread_index = index; }
  71 
  72   // Initialization
  73   // Called explicitly from VMThread::activate_system instead of init_globals.
  74   static void init();
  75   static bool is_initialized();
  76 
  77  private:
  78   static int     _thread_index;
  79 
  80   static void    generate_code_for_get_thread();
  81 
  82   // Processor dependent parts of set_thread and initialization
  83   static void pd_set_thread(Thread* thread);
  84   static void pd_init();
  85   // Invalidate any thread cacheing or optimization schemes.
  86   static void pd_invalidate_all();
  87 
  88 };
  89 
  90 #endif // SHARE_VM_RUNTIME_THREADLOCALSTORAGE_HPP