SimpleRWLock Class Reference

#include <SimpleRWLock.h>

List of all members.

Public Member Functions
	SimpleRWLock ()
void	enter_read (void)
void	enter_write (void)
void	leave_read (void)
void	leave_write (void)
	SimpleRWLock ()
void	enter_read (void)
void	enter_write (void)
void	leave_read (void)
void	leave_write (void)
Static Public Member Functions
static const char *	name ()
static const char *	name ()
Private Attributes
volatile int	m_nReaders
volatile int	m_nWriters
long	m_nReaders
long	m_nWriters

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Detailed Description

Definition at line 12 of file SimpleRWLock.h.

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Constructor & Destructor Documentation

SimpleRWLock::SimpleRWLock

(

)

[inline]

Definition at line 18 of file SimpleRWLock.h.

References m_nReaders, and m_nWriters.

    {
        m_nReaders = 0;
        m_nWriters = 0;
    }

SimpleRWLock::SimpleRWLock

(

)

[inline]

Definition at line 16 of file VladRWLock.h.

References m_nReaders, and m_nWriters.

    {
        m_nReaders = 0;
        m_nWriters = 0;
    }

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Member Function Documentation

static const char* SimpleRWLock::name

(

)

[inline, static]

Definition at line 24 of file SimpleRWLock.h.

{ return "Simple_Lock"; }

void SimpleRWLock::enter_read

(

void

)

[inline]

Definition at line 26 of file SimpleRWLock.h.

References atomic_dec(), atomic_inc(), m_nReaders, m_nWriters, and thread_yield().

    {
        for (;;)
        {
            atomic_inc(&m_nReaders);
            if (m_nWriters == 0) break;
            atomic_dec(&m_nReaders);
            thread_yield();
        }
    }

void SimpleRWLock::enter_write

(

void

)

[inline]

Definition at line 37 of file SimpleRWLock.h.

References atomic_cmpexch_return(), m_nReaders, m_nWriters, and thread_yield().

    {
        for (;;)
        {
            if (atomic_cmpexch_return(&m_nWriters, 1, 0) == 0)
            {
                while (m_nReaders != 0) thread_yield();
                break;
            }
            thread_yield();
        }
    }

void SimpleRWLock::leave_read

(

void

)

[inline]

Definition at line 50 of file SimpleRWLock.h.

References atomic_dec(), and m_nReaders.

    {
        atomic_dec(&m_nReaders);
    }

void SimpleRWLock::leave_write

(

void

)

[inline]

Definition at line 55 of file SimpleRWLock.h.

References atomic_dec(), and m_nWriters.

    {
        atomic_dec(&m_nWriters);
    }

static const char* SimpleRWLock::name

(

)

[inline, static]

Definition at line 22 of file VladRWLock.h.

{ return "VladRWLock"; }

void SimpleRWLock::enter_read

(

void

)

[inline]

Definition at line 24 of file VladRWLock.h.

References m_nReaders, and m_nWriters.

    {
        for (;;)
        {
            InterlockedIncrement (&m_nReaders);
            if (m_nWriters == 0) break;
            InterlockedDecrement (&m_nReaders);
            Sleep(0);
        }
    }

void SimpleRWLock::enter_write

(

void

)

[inline]

Definition at line 35 of file VladRWLock.h.

References m_nReaders, and m_nWriters.

    {
        for (;;)
        {
            if (InterlockedCompareExchange (&m_nWriters, 1, 0) == 0)
            {
                while (m_nReaders != 0) Sleep(0);
                break;
            }
            Sleep(0);
        }
    }

void SimpleRWLock::leave_read

(

void

)

[inline]

Definition at line 48 of file VladRWLock.h.

References m_nReaders.

    {
        InterlockedDecrement (&m_nReaders);
    }

void SimpleRWLock::leave_write

(

void

)

[inline]

Definition at line 53 of file VladRWLock.h.

References m_nWriters.

    {
        InterlockedDecrement (&m_nWriters);
    }

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Member Data Documentation

volatile int SimpleRWLock::m_nReaders [private]

Definition at line 14 of file SimpleRWLock.h.

Referenced by enter_read(), enter_write(), leave_read(), and SimpleRWLock().

volatile int SimpleRWLock::m_nWriters [private]

Definition at line 15 of file SimpleRWLock.h.

Referenced by enter_read(), enter_write(), leave_write(), and SimpleRWLock().

long SimpleRWLock::m_nReaders [private]

Definition at line 12 of file VladRWLock.h.

long SimpleRWLock::m_nWriters [private]

Definition at line 13 of file VladRWLock.h.

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

• C:/rwlock/SimpleRWLock.h
• C:/rwlock/VladRWLock.h