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threadWin32Impl.h
00001 // Filename: threadWin32Impl.h
00002 // Created by:  drose (07Feb06)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef THREADWIN32IMPL_H
00016 #define THREADWIN32IMPL_H
00017 
00018 #include "pandabase.h"
00019 #include "selectThreadImpl.h"
00020 
00021 #ifdef THREAD_WIN32_IMPL
00022 
00023 #include "pnotify.h"
00024 #include "threadPriority.h"
00025 #include "mutexWin32Impl.h"
00026 #include "conditionVarWin32Impl.h"
00027 
00028 class Thread;
00029 
00030 ////////////////////////////////////////////////////////////////////
00031 //       Class : ThreadWin32Impl
00032 // Description : Uses native Windows calls to implement a thread.
00033 ////////////////////////////////////////////////////////////////////
00034 class EXPCL_PANDA_PIPELINE ThreadWin32Impl {
00035 public:
00036   INLINE ThreadWin32Impl(Thread *parent_obj);
00037   ~ThreadWin32Impl();
00038 
00039   void setup_main_thread();
00040   bool start(ThreadPriority priority, bool joinable);
00041   void join();
00042   INLINE void preempt();
00043 
00044   string get_unique_id() const;
00045 
00046   INLINE static void prepare_for_exit();
00047 
00048   INLINE static Thread *get_current_thread();
00049   INLINE static void bind_thread(Thread *thread);
00050   INLINE static bool is_threading_supported();
00051   INLINE static bool is_true_threads();
00052   INLINE static bool is_simple_threads();
00053   INLINE static void sleep(double seconds);
00054   INLINE static void yield();
00055   INLINE static void consider_yield();
00056 
00057 private:
00058   static DWORD WINAPI root_func(LPVOID data);
00059   static void init_pt_ptr_index();
00060 
00061   enum Status {
00062     S_new,
00063     S_start_called,
00064     S_running,
00065     S_finished
00066   };
00067 
00068   MutexWin32Impl _mutex;
00069   ConditionVarWin32Impl _cv;
00070   Thread *_parent_obj;
00071   HANDLE _thread;
00072   DWORD _thread_id;
00073   bool _joinable;
00074   Status _status;
00075 
00076   static DWORD _pt_ptr_index;
00077   static bool _got_pt_ptr_index;
00078 };
00079 
00080 #include "threadWin32Impl.I"
00081 
00082 #endif  // THREAD_WIN32_IMPL
00083 
00084 #endif
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