sio.cpp
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: sio.cpp,v 1.4.32.3 2004/07/09 01:44:53 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file,
- * are subject to the current version of the RealNetworks Public
- * Source License (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (the "RCSL") available at
- * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
- * will apply. You may also obtain the license terms directly from
- * RealNetworks. You may not use this file except in compliance with
- * the RPSL or, if you have a valid RCSL with RealNetworks applicable
- * to this file, the RCSL. Please see the applicable RPSL or RCSL for
- * the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the
- * portions it created.
- *
- * This file, and the files included with this file, is distributed
- * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
- * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
- * ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "hlxclib/stdio.h"
- #include "hxtypes.h"
- #include "debug.h"
- #include "bio.h"
- #include "sio.h"
- #include "hxheap.h"
- #include "hxassert.h"
- #ifdef _DEBUG
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- SIO::Region*
- SIO::Region_list::find(Byte* buf, SIO::Region**& regp)
- {
- Region* r;
- Region **rp;
- for (rp = ®s; (r = *rp) != 0; rp = &r->next)
- {
- if (r->base <= buf && buf < r->limit)
- {
- regp = rp;
- return r;
- }
- }
- regp = rp;
- return 0;
- }
- SIO::Region*
- SIO::Region_list::find(off_t offt, SIO::Region**& regp)
- {
- Region* r;
- Region **rp;
- for (rp = ®s; (r = *rp) != 0; rp = &r->next)
- {
- if (offt < r->off)
- break;
- if (r->off + r->limit - r->base < offt)
- continue;
- regp = rp;
- return r;
- }
- regp = rp;
- return 0;
- }
- Byte*
- SIO::Region_list::remove(Region* reg)
- {
- Region* r;
- for (Region** rp = ®s; (r = *rp) != 0; rp = &r->next)
- if (r == reg)
- {
- *rp = r->next;
- Byte* b = r->base;
- delete r;
- return b;
- }
- return 0;
- }
- int
- SIO::write_flush_count()
- {
- Region* r = writer.regs;
- int count = 0;
-
- while (r && r->refcount == 0 && r != writer.creg)
- {
- count += HX_SAFEINT(r->limit - r->base - (r->flush_off - r->off));
- r = r->next;
- }
- return count;
- }
- BOOL
- SIO::write_flush_needed()
- {
- Region* r = writer.regs;
-
- while (r && r->refcount == 0 && r != writer.creg)
- {
- if (HX_SAFEINT(r->limit - r->base - (r->flush_off - r->off)))
- return TRUE;
- r = r->next;
- }
-
- return FALSE;
- }