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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit460c52653ab0dcca6f19a4f492ed2c5e4e963ab0 (patch)
tree67208f7c145782a7e90b123b982ca78d88cc2c87 /indexlib/mmap_manager.h
downloadtdepim-460c52653ab0dcca6f19a4f492ed2c5e4e963ab0.tar.gz
tdepim-460c52653ab0dcca6f19a4f492ed2c5e4e963ab0.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdepim@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+#ifndef LPC_MMAP_MANAGER_H1103129409_INCLUDE_GUARD_
+#define LPC_MMAP_MANAGER_H1103129409_INCLUDE_GUARD_
+
+/* This file is part of indexlib.
+ * Copyright (C) 2005 Luís Pedro Coelho <luis@luispedro.org>
+ *
+ * Indexlib is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation and available as file
+ * GPL_V2 which is distributed along with indexlib.
+ *
+ * Indexlib 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA
+ *
+ * In addition, as a special exception, the copyright holders give
+ * permission to link the code of this program with any edition of
+ * the Qt library by Trolltech AS, Norway (or with modified versions
+ * of Qt that use the same license as Qt), and distribute linked
+ * combinations including the two. You must obey the GNU General
+ * Public License in all respects for all of the code used other than
+ * Qt. If you modify this file, you may extend this exception to
+ * your version of the file, but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from
+ * your version.
+ */
+
+
+#include "manager.h"
+#include <string>
+#include <cstring>
+#include <unistd.h>
+#include <assert.h>
+
+class mmap_manager : public memory_manager {
+ public:
+ explicit mmap_manager( std::string );
+ ~mmap_manager();
+ const unsigned char* ronly_base( unsigned offset ) const {
+ assert( offset <= size() ); // allow 1-past-the-end but not more
+ return reinterpret_cast<unsigned char*>( base_ ) + offset;
+ }
+ unsigned char* rw_base( unsigned offset ) const {
+ assert( offset <= size() ); // as above
+ return reinterpret_cast<unsigned char*>( base_ ) + offset;
+ }
+ unsigned size() const {
+ return size_;
+ }
+ void resize( unsigned );
+
+ static void remove( std::string fname ) {
+ ::unlink( fname.c_str() );
+ }
+ private:
+ void unmap();
+ void map( unsigned );
+ std::string filename_;
+ const unsigned pagesize_;
+ int fd_;
+ void* base_;
+ unsigned size_;
+};
+
+
+#endif /* LPC_MMAP_MANAGER_H1103129409_INCLUDE_GUARD_ */