operatingsystem.hh

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/*
 * Copyright (c) 2004-2005 The Regents of The University of Michigan
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef __KERN_OPERATINGSYSTEM_HH__
#define __KERN_OPERATINGSYSTEM_HH__
 
#include "base/types.hh"
 
#include <string>
 
namespace gem5
{
 
class Process;
class ThreadContext;
 
class OperatingSystem
{
 
  public:
 
    typedef void tgt_stat;
 
    // same for stat64
    typedef void tgt_stat64;
 
    static const int _SYS_NMLN = 65;
 
    struct utsname
    {
        char sysname[_SYS_NMLN];        
        char nodename[_SYS_NMLN];       
        char release[_SYS_NMLN];        
        char version[_SYS_NMLN];        
        char machine[_SYS_NMLN];        
    };
 
    struct rlimit
    {
        uint64_t  rlim_cur;     
        uint64_t  rlim_max;     
    };
 
    struct timeval
    {
        int64_t tv_sec;         
        int64_t tv_usec;        
    };
 
    // For writev/readv
    struct tgt_iovec
    {
        uint64_t iov_base; // void *
        uint64_t iov_len;
    };
 
 
    struct rusage
    {
        timeval ru_utime;       
        timeval ru_stime;       
        int64_t ru_maxrss;              
        int64_t ru_ixrss;               
        int64_t ru_idrss;               
        int64_t ru_isrss;               
        int64_t ru_minflt;              
        int64_t ru_majflt;              
        int64_t ru_nswap;               
        int64_t ru_inblock;             
        int64_t ru_oublock;             
        int64_t ru_msgsnd;              
        int64_t ru_msgrcv;              
        int64_t ru_nsignals;            
        int64_t ru_nvcsw;               
        int64_t ru_nivcsw;              
    };
 
    static int openSpecialFile(std::string path, Process *process,
                               ThreadContext *tc);
 
};  // class OperatingSystem
 
} // namespace gem5
 
#endif // __OPERATINGSYSTEM_HH__