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#ifndef WNT
#if (!defined (__hpux )) && (!defined (HPUX))
#include <Standard_ProgramError.hxx>
#include <Standard_NullObject.hxx>
#include <Standard_ConstructionError.hxx>
#include <OSD_SharedMemory.ixx>
#include <OSD_WhoAmI.hxx>
#include <errno.h>
const OSD_WhoAmI Iam = OSD_WSharedMemory;
extern "C" int create_sharedmemory(int **,char *,int);
extern "C" int open_sharedmemory(int **,char *,int);
extern "C" int remove_sharedmemory(int *, char *);
OSD_SharedMemory::OSD_SharedMemory(){
myId = -1;
}
// ======================================================================
OSD_SharedMemory::OSD_SharedMemory(const TCollection_AsciiString& Name,
const Standard_Integer Size)
// CREATE a mapping memory object ==================================
// ======================================================================
{
myId = -1;
if (!Name.IsAscii())
Standard_ConstructionError::Raise("OSD_SharedMemory::OSD_SharedMemory: Name");
myName = Name;
if (Size <= 0)
Standard_ProgramError::Raise("OSD_SharedMemory::OSD_SharedMemory : invalid size");
mySize = Size;
}
// ======================================================================
void OSD_SharedMemory::Build()
// ======================================================================
{
Standard_PCharacter pStr;
//
pStr=(Standard_PCharacter)myName.ToCString();
myId = create_sharedmemory((int **)&myAddress, pStr, (int)mySize);
if (myId == 0)
myError.SetValue (errno, Iam, "OSD_SharedMemory::Build");
}
// ======================================================================
void OSD_SharedMemory::Open(const TCollection_AsciiString& Name,
const Standard_Integer Size)
// ======================================================================
// OPEN a mapping memory section
// We suppose that the shared memory segment is already
// created(allocated)
{
if (!Name.IsAscii()) {
Standard_ConstructionError::Raise("OSD_SharedMemory::Open : Name");
}
myName = Name;
if (Size <= 0) {
Standard_ProgramError::Raise("OSD_SharedMemory::Open : invalid size");
}
mySize = Size;
//
Standard_PCharacter pStr;
//
pStr=(Standard_PCharacter)myName.ToCString();
myId = open_sharedmemory((int **)&myAddress, pStr, (int)mySize);
//
if (myId == 0) {
myError.SetValue (errno, Iam, "OSD_SharedMemory::Open");
}
}
// ======================================================================
void OSD_SharedMemory::Delete()
// ======================================================================
// CLOSE a mapping memory section
{
if (myError.Failed()) {
myError.Perror();
}
if (myId == -1) {
Standard_ProgramError::Raise("OSD_SharedMemory::Delete : shared memory not opened/created");
}
//
Standard_PCharacter pStr;
//
pStr=(Standard_PCharacter)myName.ToCString();
if (remove_sharedmemory((int *)&myId, pStr) == 0) {
myError.SetValue(errno, Iam, "OSD_SharedMemory::Delete");
}
}
// ======================================================================
Standard_Address OSD_SharedMemory::GiveAddress()const{
// ======================================================================
if (myAddress == NULL)
Standard_NullObject::Raise("OSD_SharedMemory::Address : shared memory not opened/created");
return(myAddress);
}
// ======================================================================
void OSD_SharedMemory::Reset(){
// ======================================================================
myError.Reset();
}
// ======================================================================
Standard_Boolean OSD_SharedMemory::Failed()const{
// ======================================================================
return( myError.Failed());
}
// ======================================================================
void OSD_SharedMemory::Perror() {
// ======================================================================
myError.Perror();
}
// ======================================================================
Standard_Integer OSD_SharedMemory::Error()const{
// ======================================================================
return( myError.Error());
}
#endif
#else
//------------------------------------------------------------------------
//------------------- Windows NT sources for OSD_SharedMemory- ----------
//------------------------------------------------------------------------
#define STRICT
#include <windows.h>
#include <OSD_SharedMemory.ixx>
void _osd_wnt_set_error ( OSD_Error&, OSD_WhoAmI, ... );
OSD_SharedMemory :: OSD_SharedMemory () {
myId = 0;
} // end constructor ( 1 )
OSD_SharedMemory :: OSD_SharedMemory (
const TCollection_AsciiString& Name,
const Standard_Integer size
) {
myName = Name;
if ( size <= 0 )
Standard_ConstructionError :: Raise (
"OSD_SharedMemory :: OSD_SharedMemory : invalid size"
);
mySize = size;
} // end constructor ( 2 )
void OSD_SharedMemory :: Build () {
HANDLE hFileMapping = CreateFileMapping (
( HANDLE )0xFFFFFFFF, NULL, PAGE_READWRITE, 0, mySize,
myName.ToCString ()
);
if ( hFileMapping == NULL || GetLastError () == ERROR_ALREADY_EXISTS )
_osd_wnt_set_error ( myError, OSD_WSharedMemory );
else {
myAddress = MapViewOfFile ( hFileMapping, FILE_MAP_ALL_ACCESS, 0, 0, 0 );
if ( myAddress == NULL )
_osd_wnt_set_error ( myError, OSD_WSharedMemory );
else
myId = ( Standard_Integer )hFileMapping;
} // end else
} // end OSD_SharedMemory :: Build
void OSD_SharedMemory :: Open (
const TCollection_AsciiString& Name,
const Standard_Integer size
) {
myName = Name;
if ( size <= 0 )
Standard_ProgramError :: Raise ( "OSD_SharedMemory :: Open : invalid size" );
mySize = size;
HANDLE hFileMapping = OpenFileMapping (
FILE_MAP_ALL_ACCESS, FALSE, myName.ToCString ()
);
if ( hFileMapping == NULL )
_osd_wnt_set_error ( myError, OSD_WSharedMemory );
else {
myAddress = MapViewOfFile ( hFileMapping, FILE_MAP_ALL_ACCESS, 0, 0, mySize );
if ( myAddress == NULL )
_osd_wnt_set_error ( myError, OSD_WSharedMemory );
else
myId = ( Standard_Integer )hFileMapping;
CloseHandle ( hFileMapping );
} // end else
} // end OSD_SharedMemory :: Open
void OSD_SharedMemory :: Delete () {
if ( Failed () ) Perror ();
if ( myId == 0 )
Standard_ProgramError :: Raise (
"OSD_SharedMemory :: Delete : shared memory not opened/created"
);
UnmapViewOfFile ( myAddress );
CloseHandle ( ( HANDLE )myId );
} // end OSD_SharedMemory :: Delete
Standard_Address OSD_SharedMemory :: GiveAddress () const {
if ( myAddress == NULL )
Standard_NullObject :: Raise (
"OSD_SharedMemory :: Address : shared memory not opened/created"
);
return myAddress;
} // end OSD_SharedMemory :: GiveAddress
Standard_Boolean OSD_SharedMemory :: Failed () const {
return myError.Failed ();
} // end OSD_SharedMemory :: Failed
void OSD_SharedMemory :: Reset () {
myError.Reset ();
} // end OSD_SharedMemory :: Reset
void OSD_SharedMemory :: Perror () {
myError.Perror ();
} // end OSD_SharedMemory :: Perror
Standard_Integer OSD_SharedMemory :: Error () const{
return myError.Error ();
} // end OSD_SharedMemory :: Error
#endif
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