memiter.h
00001 //
00002 // memiter.h
00003 //
00004 // derived from memasmg.cc
00005 // Copyright (C) 1996 Limit Point Systems, Inc.
00006 //
00007 // Author: Curtis Janssen <cljanss@limitpt.com>
00008 // Maintainer: LPS
00009 //
00010 // This file is part of the SC Toolkit.
00011 //
00012 // The SC Toolkit is free software; you can redistribute it and/or modify
00013 // it under the terms of the GNU Library General Public License as published by
00014 // the Free Software Foundation; either version 2, or (at your option)
00015 // any later version.
00016 //
00017 // The SC Toolkit is distributed in the hope that it will be useful,
00018 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00019 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
00020 // GNU Library General Public License for more details.
00021 //
00022 // You should have received a copy of the GNU Library General Public License
00023 // along with the SC Toolkit; see the file COPYING.LIB. If not, write to
00024 // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
00025 //
00026 // The U.S. Government is granted a limited license as per AL 91-7.
00027 //
00028
00029 #ifdef __GNUC__
00030 #pragma interface
00031 #endif
00032
00033 #ifndef _util_group_memiter_h
00034 #define _util_group_memiter_h
00035
00036 #include <util/group/memory.h>
00037
00038 namespace sc {
00039
00040 class MemoryIter {
00041 private:
00042 distsize_t *offsets_;
00043 int n_;
00044
00045 void *data_;
00046
00047 char *current_data_;
00048 int current_size_;
00049 int current_offset_;
00050 int node_;
00051
00052 int ready_;
00053
00054 distsize_t offset_;
00055 int size_;
00056 public:
00057 MemoryIter(void *data, distsize_t *offsets, int n);
00058
00059 // iteration control
00060 void begin(distsize_t offset, int size);
00061 int ready() { return ready_; }
00062 void next();
00063
00064 // info about the current piece of data
00065 void *data() { return (void*) current_data_; }
00066 int node() { return node_; }
00067 int offset() { return current_offset_; }
00068 int size() { return current_size_; }
00069
00070 // returns true if all data is local to node
00071 int local(distsize_t offset, int size, int node);
00072 };
00073
00074 }
00075
00076 #endif
00077
00078 // Local Variables:
00079 // mode: c++
00080 // c-file-style: "CLJ"
00081 // End:
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