osiWireFormat.h File Reference

#include "epicsTypes.h"
#include "osdWireFormat.h"

Include dependency graph for osiWireFormat.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes
class	AlignedWireRef< T >
class	AlignedWireRef< const T >
union	WireAlias< T >
union	WireAlias< epicsInt8 >
union	WireAlias< epicsInt16 >
union	WireAlias< epicsInt32 >
union	WireAlias< epicsFloat32 >

Functions
template<class T >
void	WireGet (const epicsUInt8 *pWireSrc, T &)
template<class T >
void	WireSet (const T &, epicsUInt8 *pWireDst)
template<class T >
void	AlignedWireGet (const T &, T &)
template<class T >
void	AlignedWireSet (const T &, T &)
epicsUInt16	byteSwap (const epicsUInt16 &src)
epicsUInt32	byteSwap (const epicsUInt32 &src)
template<>
void	WireGet< epicsUInt8 > (const epicsUInt8 *pWireSrc, epicsUInt8 &dst)
template<>
void	WireGet< epicsUInt16 > (const epicsUInt8 *pWireSrc, epicsUInt16 &dst)
template<>
void	WireGet< epicsUInt32 > (const epicsUInt8 *pWireSrc, epicsUInt32 &dst)
template<>
void	WireSet< epicsUInt8 > (const epicsUInt8 &src, epicsUInt8 *pWireDst)
template<>
void	WireSet< epicsUInt16 > (const epicsUInt16 &src, epicsUInt8 *pWireDst)
template<>
void	WireSet< epicsUInt32 > (const epicsUInt32 &src, epicsUInt8 *pWireDst)

Function Documentation

template<class T >

void AlignedWireGet ( const T &  src, T &  dst  )

inline

Definition at line 232 of file osiWireFormat.h.

{
    // copy through union here
    // a) prevents over-aggressive optimization under strict aliasing rules
    // b) doesnt preclude extra copy operation being optimized away
    WireAlias < T > srcu, dstu;
    srcu._o = src;
    AlignedWireGet ( srcu._u, dstu._u );
    dst = dstu._o;
}

template<class T >

void AlignedWireSet ( const T &  src, T &  dst  )

inline

Definition at line 244 of file osiWireFormat.h.

{
    // copy through union here
    // a) prevents over-aggressive optimization under strict aliasing rules
    // b) doesnt preclude extra copy operation being optimized away
    WireAlias < T > srcu, dstu;
    srcu._o = src;
    AlignedWireSet ( srcu._u, dstu._u );
    dst = dstu._o;
}

epicsUInt16 byteSwap ( const epicsUInt16 &  src )

inline

Definition at line 108 of file osiWireFormat.h.

{
    return static_cast < epicsUInt16 >
        ( ( src << 8u ) | ( src >> 8u ) );
}

epicsUInt32 byteSwap ( const epicsUInt32 &  src )

inline

Definition at line 115 of file osiWireFormat.h.

{
    epicsUInt32 tmp0 = byteSwap (
        static_cast < epicsUInt16 > ( src >> 16u ) );
    epicsUInt32 tmp1 = byteSwap (
        static_cast < epicsUInt16 > ( src ) );
    return static_cast < epicsUInt32 >
        ( ( tmp1 << 16u ) | tmp0 );
}

template<class T >

void WireGet ( const epicsUInt8 *  pWireSrc, T &  dst  )

inline

Definition at line 159 of file osiWireFormat.h.

{
    // copy through union here
    // a) prevents over-aggressive optimization under strict aliasing rules
    // b) doesnt preclude extra copy operation being optimized away
    WireAlias < T > tmp;
    WireGet ( pWireSrc, tmp._u );
    dst = tmp._o;
}

template<>

void WireGet< epicsUInt16 > ( const epicsUInt8 *  pWireSrc, epicsUInt16 &  dst  )

inline

Definition at line 177 of file osiWireFormat.h.

{
    dst = static_cast < epicsUInt16 > (
        ( pWireSrc[0] << 8u ) | pWireSrc[1] );
}

template<>

void WireGet< epicsUInt32 > ( const epicsUInt8 *  pWireSrc, epicsUInt32 &  dst  )

inline

Definition at line 185 of file osiWireFormat.h.

{
    dst = static_cast < epicsUInt32 > (
        ( pWireSrc[0] << 24u ) |
        ( pWireSrc[1] << 16u ) |
        ( pWireSrc[2] <<  8u ) |
          pWireSrc[3] );
}

template<>

void WireGet< epicsUInt8 > ( const epicsUInt8 *  pWireSrc, epicsUInt8 &  dst  )

inline

Definition at line 170 of file osiWireFormat.h.

{
    dst = pWireSrc[0];
}

template<class T >

void WireSet ( const T &  src, epicsUInt8 *  pWireDst  )

inline

Definition at line 196 of file osiWireFormat.h.

{
    // copy through union here
    // a) prevents over-aggressive optimization under strict aliasing rules
    // b) doesnt preclude extra copy operation being optimized away
    WireAlias < T > tmp;
    tmp._o = src;
    WireSet ( tmp._u, pWireDst );
}

template<>

void WireSet< epicsUInt16 > ( const epicsUInt16 &  src, epicsUInt8 *  pWireDst  )

inline

Definition at line 214 of file osiWireFormat.h.

{
    pWireDst[0] = static_cast < epicsUInt8 > ( src >> 8u );
    pWireDst[1] = static_cast < epicsUInt8 > ( src );
}

template<>

void WireSet< epicsUInt32 > ( const epicsUInt32 &  src, epicsUInt8 *  pWireDst  )

inline

Definition at line 222 of file osiWireFormat.h.

{
    pWireDst[0] = static_cast < epicsUInt8 > ( src >> 24u );
    pWireDst[1] = static_cast < epicsUInt8 > ( src >> 16u );
    pWireDst[2] = static_cast < epicsUInt8 > ( src >>  8u );
    pWireDst[3] = static_cast < epicsUInt8 > ( src );
}

template<>

void WireSet< epicsUInt8 > ( const epicsUInt8 &  src, epicsUInt8 *  pWireDst  )

inline

Definition at line 207 of file osiWireFormat.h.

{
    pWireDst[0] = src;
}