gprof/hist.h

   1 /* hist.h
   2
   3    Copyright 2000, 2001, 2002, 2004, 2005, 2007 Free Software Foundation, Inc.
   4
   5    This file is part of GNU Binutils.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21 \f
  22 #ifndef hist_h
  23 #define hist_h
  24
  25 typedef struct histogram
  26 {
  27   bfd_vma lowpc;
  28   bfd_vma highpc;
  29   unsigned int num_bins;
  30   int *sample;           /* Histogram samples (shorts in the file!).  */
  31 } histogram;
  32
  33 histogram *histograms;
  34 unsigned num_histograms;
  35
  36 /* Scale factor converting samples to pc values:
  37    each sample covers HIST_SCALE bytes.  */
  38 extern double hist_scale;
  39
  40 extern void hist_read_rec        (FILE *, const char *);
  41 extern void hist_write_hist      (FILE *, const char *);
  42 extern void hist_assign_samples  (void);
  43 extern void hist_print           (void);
  44
  45 /* Checks if ADDRESS is within the range of addresses for which
  46    we have histogram data.  Returns 1 if so and 0 otherwise.  */
  47 extern int hist_check_address (unsigned address);
  48
  49 /* Given a range of addresses for a symbol, find a histogram record
  50    that intersects with this range, and clips the range to that
  51    histogram record, modifying *P_LOWPC and *P_HIGHPC.
  52
  53    If no intersection is found, *P_LOWPC and *P_HIGHPC will be set to
  54    one unspecified value.  If more that one intersection is found,
  55    an error is emitted.  */
  56 extern void hist_clip_symbol_address (bfd_vma *p_lowpc, bfd_vma *p_highpc);
  57
  58 #endif /* hist_h */