Update of /cvsroot/rtk/rtk/src/core/platform/linux
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv28961/src/core/platform/linux
Added Files:
Mmap.cpp
Log Message:
Mmap.cpp added to /src/core/platform/linux
--- NEW FILE: Mmap.cpp ---
/**
*
* RTK
* Fast and easy cross-platform GUI ToolKit.
*
* Copyright (C) 2001-200x RTK Development Team
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the slightly modified (see the "EXCEPTION NOTICE" part
* of RTK Library License) GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* and along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA .
*
* Also you should have received a copy of RTK Library License, if not please
* write an e-mail to some of RTK authors (listed in file AUTHORS).
*
* Bug reports: bu...@rt...
* Suggestions: rf...@rt...
***************************************************************************/
/**
* $Source: /cvsroot/rtk/rtk/src/core/platform/linux/Mmap.cpp,v $
*****
* Authors (chronological order):
* Dejan Lekic, de...@nu... (dejan§rtk.cx)
* Contributors (chronological order):
* $fname $lname, $email
*****
* T0D0 List:
* -
***************************************************************************/
#include <rtk/Mmap.h>
namespace Rtk
{
Mmap::Mmap()
{
_file_opened = false;
_filename = 0;
_len = 0;
_fd = -1;
_prot = PROT_READ|PROT_WRITE;
_shared = MAP_SHARED;
_mmapAddress = (caddr_t) -1;
} // Mmap() constructor
Mmap::Mmap(const String& fname, bool bc)
{
if (SetFilename(fname.c_str(), bc))
_file_opened = true;
else
_file_opened = false;
_len = 0;
_fd = -1;
_prot = PROT_READ|PROT_WRITE;
_shared = MAP_SHARED;
_mmapAddress = (caddr_t) -1;
} // Mmap() constructor
Mmap::~Mmap()
{
// free filename
if (_filename)
delete _filename;
// close file
if (_fd >= 0)
close(_fd);
// unmap file
if (_mmap_address)
munmap(_mmap_address, _len);
} // ~Mmap() destructor
bool Mmap::SetFilename(const char *filename, bool create)
{
int len = strlen(filename)+1;
_filename = new RCHAR [len];
strcpy(_filename, filename);
struct stat statbuf;
if (!create) {
_fd = open(_filename, O_RDWR) ;
} else {
_fd = open(_filename, O_RDWR|O_CREAT, 00600);
}
// Return -1 as result if opening went wrong
if (_fd < 0)
return false;
int rc = stat(_filename, &statbuf);
if (rc < 0) {
return false;
}
_len = (size_t) statbuf.st_size;
return true;
} // SetFilename()
void Mmap::SetSize(uint size)
{
if (_len != size)
{
lseek(_fd, (off_t) size, SEEK_SET);
write(_fd, "", 1);
ftruncate(_fd, size);
}
_len = size;
}
void* Mmap::Map()
{
_mmap_address = (void*)mmap(0, _len, _prot, _shared, _fd, 0);
return _mmap_address;
} // Map()
void Mmap::Bzero()
{
if (_mmap_address != (void*)-1)
memset(_mmap_address, 0, _len);
} // Bzero()
}; // Rtk
/**
* $Id: Mmap.cpp,v 1.1 2004/04/20 18:54:00 dejan Exp $
***************************************************************************/
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