ACE_Mutex, i.e., all the methods are
no ops.
#include <ace/Synch.h>
class ACE_Null_Mutex {
public:inline ACE_Null_Mutex (LPCTSTR = 0);inline ~ACE_Null_Mutex (void);inline int remove (void);inline int acquire (void);inline int tryacquire (void);inline int release (void);inline int acquire_write (void);inline int tryacquire_write (void);inline int acquire_read (void);inline int tryacquire_read (void);inline void dump (void) const;ACE_ALLOC_HOOK_DECLARE;};
inline ACE_Null_Mutex (LPCTSTR = 0);
inline ~ACE_Null_Mutex (void);
inline int remove (void);
inline int acquire (void);
inline int tryacquire (void);
inline int release (void);
inline int acquire_write (void);
inline int tryacquire_write (void);
inline int acquire_read (void);
inline int tryacquire_read (void);
inline void dump (void) const;
ACE_ALLOC_HOOK_DECLARE;