memamsg.h
//
// memamsg.h
//
// Copyright (C) 1996 Limit Point Systems, Inc.
//
// Author: Curtis Janssen <cljanss@limitpt.com>
// Maintainer: LPS
//
// This file is part of the SC Toolkit.
//
// The SC Toolkit is free software; you can redistribute it and/or modify
// it under the terms of the GNU Library General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
//
// The SC Toolkit 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 Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public License
// along with the SC Toolkit; see the file COPYING.LIB. If not, write to
// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
//
// The U.S. Government is granted a limited license as per AL 91-7.
//
#ifdef __GNUC__
#pragma interface
#endif
#ifndef _util_group_memamsg_h
#define _util_group_memamsg_h
#include <iostream>
#include <util/group/memmsg.h>
namespace sc {
class MemoryDataRequest {
public:
enum { NData = 6 };
enum Request { Deactivate, Sync, Retrieve, Replace, DoubleSum };
private:
int data_[NData];
public:
MemoryDataRequest() {}
MemoryDataRequest(Request r, int node = 0, int offset = 0, int size = 0,
int lock = 0, int serial = 0);
void assign(Request r, int node, int offset, int size,
int lock, int serial);
void *data() const { return (void *) data_; }
int nbytes() const { return sizeof(int)*NData; }
const char *request_string() const;
MemoryDataRequest::Request request() const { return (Request) data_[0]; }
int node() const { return data_[1]; }
int offset() const { return data_[2]; }
int size() const { return data_[3]; }
int serial_number() const { return data_[4]; }
int lock() const { return data_[5]; }
int touches_data() const {return request()!=Deactivate&&request()!=Sync;}
// Sync messages only define one datum besides type and node
int reactivate() const { return data_[2]; }
void operator =(const MemoryDataRequest &r);
void print(const char* msg = 0, std::ostream & o = ExEnv::out0()) const;
};
class MemoryDataRequestQueue {
public:
enum { MaxDepth = 1024 };
private:
MemoryDataRequest q_[MaxDepth];
int n_;
public:
MemoryDataRequestQueue(): n_(0) {}
int n() const { return n_; }
void push(MemoryDataRequest&);
void pop(MemoryDataRequest&);
MemoryDataRequest& operator[](int i) { return q_[i]; }
void clear() { n_ = 0; }
};
class ActiveMsgMemoryGrp : public MsgMemoryGrp {
protected:
char *data_;
virtual void retrieve_data(void *, int node, int offset, int size,
int lock) = 0;
virtual void replace_data(void *, int node, int offset, int size,
int unlock) = 0;
virtual void sum_data(double *data, int node, int doffset, int dsize) = 0;
public:
ActiveMsgMemoryGrp(const Ref<MessageGrp>& msg);
ActiveMsgMemoryGrp(const Ref<KeyVal>&);
~ActiveMsgMemoryGrp();
void set_localsize(size_t);
void *localdata();
void *obtain_writeonly(distsize_t offset, int size);
void *obtain_readwrite(distsize_t offset, int size);
void *obtain_readonly(distsize_t offset, int size);
void release_readonly(void *data, distsize_t offset, int size);
void release_writeonly(void *data, distsize_t offset, int size);
void release_readwrite(void *data, distsize_t offset, int size);
void sum_reduction(double *data, distsize_t doffset, int dsize);
void sum_reduction_on_node(double *data, size_t doffset, int dsize,
int node = -1);
void print(std::ostream &o = ExEnv::out0()) const;
};
}
#endif
// Local Variables:
// mode: c++
// c-file-style: "CLJ"
// End: