Mutex Class Reference

#include <Mutex.h>

Collaboration diagram for Mutex:

Public Member Functions
	Mutex ()
	~Mutex ()
void	Lock (void)
void	Unlock (void)
bool	IsLocked (void)

Protected Attributes
uint32	LockCount
HANDLE	MutexHandle
bool	Locked

Detailed Description

Definition at line 15 of file Mutex.h.

Constructor & Destructor Documentation

Mutex()

Mutex::Mutex ( )

inline

Definition at line 18 of file Mutex.h.

    {
        // NT only code begin ... Win9x disregards this part
        SECURITY_ATTRIBUTES MutexAttribs;
 
        memset (&MutexAttribs, 0, sizeof (SECURITY_ATTRIBUTES));
 
        MutexAttribs.bInheritHandle = false;
        MutexAttribs.nLength = sizeof (SECURITY_ATTRIBUTES);
        MutexAttribs.lpSecurityDescriptor = NULL;
        // NT only code end
 
        Locked      = false;
        LockCount   = 0;
        MutexHandle = CreateMutex (&MutexAttribs, Locked, NULL);
 
        return;
    }

Referenced by AcpiExUnlinkMutex().

~Mutex()

Mutex::~Mutex ( )

inline

Definition at line 37 of file Mutex.h.

    {
        Lock ();
        CloseHandle (MutexHandle);
    }

Member Function Documentation

IsLocked()

bool Mutex::IsLocked ( void  )

inline

Definition at line 66 of file Mutex.h.

    {
        return (Locked);
    }

Lock()

void Mutex::Lock ( void  )

inline

Definition at line 43 of file Mutex.h.

    {
        Locked = true;
        WaitForSingleObject (MutexHandle, INFINITE);
        LockCount += 1;
        return;
    }

Referenced by Defragment::Lock(), and ~Mutex().

Unlock()

void Mutex::Unlock ( void  )

inline

Definition at line 52 of file Mutex.h.

    {
        LockCount -= 1;
        if (LockCount <= 0)
        {
            LockCount = 0;
            Locked = false;
        }
 
        ReleaseMutex (MutexHandle);
        return;
    }

Referenced by Defragment::Unlock().

Member Data Documentation

LockCount

uint32 Mutex::LockCount

protected

Definition at line 72 of file Mutex.h.

Referenced by Lock(), Mutex(), and Unlock().

Locked

bool Mutex::Locked

protected

Definition at line 74 of file Mutex.h.

Referenced by IsLocked(), Lock(), Mutex(), and Unlock().

MutexHandle

HANDLE Mutex::MutexHandle

protected

Definition at line 73 of file Mutex.h.

Referenced by Lock(), Mutex(), Unlock(), and ~Mutex().

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The documentation for this class was generated from the following file:

• modules/rosapps/applications/fraginator/Mutex.h