/* Copyright (C) 2021-2026 Free Software Foundation, Inc.   Contributed by Oracle.    This file is part of GNU Binutils.    This program is free software; you can redistribute it and/or modify   it under the terms of the GNU General Public License as published by   the Free Software Foundation; either version 3, or (at your option)   any later version.    This program 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, 51 Franklin Street - Fifth Floor, Boston,   MA 02110-1301, USA.  */ #ifndef _DATA_WINDOW_H#define _DATA_WINDOW_H // The Data_window class hiearchy is used to access raw data in the// experiment record.//// The Data_window base class implements a set of windows into a raw data file.// It is responsible for mapping and unmapping regions of the file as// requested by other levels inside of the DBE. #include "util.h" class Data_window{public:   // Span in data file  typedef struct  {    int64_t offset; // file offset    int64_t length; // span length  } Span;   Data_window (char *filename);  ~Data_window ();   // Return address of "offset" byte of window for "length" bytes.  // Return 0 on error or locked.  void *bind (Span *span, int64_t minSize);  void *bind (int64_t file_offset, int64_t minSize);  void *get_data (int64_t offset, int64_t size, void *datap);  int64_t get_buf_size ();  int64_t copy_to_file (int f, int64_t offset, int64_t size);   bool not_opened ()            { return !opened; }  off64_t get_fsize ()          { return fsize; }   template <typename Key_t> inline Key_t  get_align_val (Key_t *vp)  {    if (sizeof (Key_t) <= sizeof (int))      return *vp;    // 64-bit value can have a wrong alignment    Key_t val = (Key_t) 0;    uint32_t *p1 = (uint32_t *) vp;    uint32_t *p2 = (uint32_t*) (&val);    p2[0] = p1[0];    p2[1] = p1[1];    return val;  }   template <typename Key_t> inline Key_t  decode (Key_t &v)  {    Key_t val = get_align_val (&v);    if (need_swap_endian)      swapByteOrder (&val, sizeof (val));    return val;  }   bool need_swap_endian;  char *fname;          // file name protected:  int fd;               // file descriptor  bool mmap_on_file; private:  long page_size;       // used in mmap()  bool use_mmap;  bool opened;  int64_t fsize;        // file size  void *base;           // current window  int64_t woffset;      // offset of current window  int64_t wsize;        // size of current window  int64_t basesize;     // size of allocated window}; #endif /* _DATA_WINDOW_H */