Panda3D
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00001 // Filename: reMutexDirect.h 00002 // Created by: drose (13Feb06) 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 REMUTEXDIRECT_H 00016 #define REMUTEXDIRECT_H 00017 00018 #include "pandabase.h" 00019 #include "mutexTrueImpl.h" 00020 #include "conditionVarImpl.h" 00021 00022 class Thread; 00023 00024 #ifndef DEBUG_THREADS 00025 00026 //////////////////////////////////////////////////////////////////// 00027 // Class : ReMutexDirect 00028 // Description : This class implements a standard reMutex by making 00029 // direct calls to the underlying implementation layer. 00030 // It doesn't perform any debugging operations. 00031 //////////////////////////////////////////////////////////////////// 00032 class EXPCL_PANDA_PIPELINE ReMutexDirect { 00033 protected: 00034 INLINE ReMutexDirect(); 00035 INLINE ~ReMutexDirect(); 00036 private: 00037 INLINE ReMutexDirect(const ReMutexDirect ©); 00038 INLINE void operator = (const ReMutexDirect ©); 00039 00040 PUBLISHED: 00041 BLOCKING INLINE void acquire() const; 00042 BLOCKING INLINE void acquire(Thread *current_thread) const; 00043 BLOCKING INLINE bool try_acquire() const; 00044 BLOCKING INLINE bool try_acquire(Thread *current_thread) const; 00045 INLINE void elevate_lock() const; 00046 INLINE void release() const; 00047 00048 INLINE bool debug_is_locked() const; 00049 00050 INLINE void set_name(const string &name); 00051 INLINE void clear_name(); 00052 INLINE bool has_name() const; 00053 INLINE string get_name() const; 00054 00055 void output(ostream &out) const; 00056 00057 private: 00058 #ifdef HAVE_REMUTEXTRUEIMPL 00059 ReMutexImpl _impl; 00060 00061 #else 00062 // If we don't have a reentrant mutex, we have to hand-roll one. 00063 INLINE void do_acquire(); 00064 void do_acquire(Thread *current_thread); 00065 INLINE bool do_try_acquire(); 00066 bool do_try_acquire(Thread *current_thread); 00067 void do_elevate_lock(); 00068 void do_release(); 00069 00070 Thread *_locking_thread; 00071 int _lock_count; 00072 00073 MutexTrueImpl _lock_impl; 00074 ConditionVarImpl _cvar_impl; 00075 #endif // HAVE_REMUTEXTRUEIMPL 00076 00077 friend class LightReMutexDirect; 00078 }; 00079 00080 INLINE ostream & 00081 operator << (ostream &out, const ReMutexDirect &m) { 00082 m.output(out); 00083 return out; 00084 } 00085 00086 #include "reMutexDirect.I" 00087 00088 #endif // !DEBUG_THREADS 00089 00090 #endif