threadLocalStorage.hpp revision 1472:c18cbe5936b8 
1/*
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23 */
24
25// Interface for thread local storage
26
27// Fast variant of ThreadLocalStorage::get_thread_slow
28extern "C" Thread*   get_thread();
29
30// Get raw thread id: e.g., %g7 on sparc, fs or gs on x86
31extern "C" uintptr_t _raw_thread_id();
32
33class 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};
64