gprof/hist.h

   1 /* hist.h
   2
   3    Copyright 2000, 2001, 2002, 2004, 2005, 2007, 2009
   4    Free Software Foundation, Inc.
   5
   6    This file is part of GNU Binutils.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21    MA 02110-1301, USA.  */
  22 \f
  23 #ifndef hist_h
  24 #define hist_h
  25
  26 typedef struct histogram
  27 {
  28   bfd_vma lowpc;
  29   bfd_vma highpc;
  30   unsigned int num_bins;
  31   int *sample;           /* Histogram samples (shorts in the file!).  */
  32 } histogram;
  33
  34 extern histogram * histograms;
  35 extern unsigned    num_histograms;
  36
  37 /* Scale factor converting samples to pc values:
  38    each sample covers HIST_SCALE bytes.  */
  39 extern double hist_scale;
  40
  41 extern void hist_read_rec        (FILE *, const char *);
  42 extern void hist_write_hist      (FILE *, const char *);
  43 extern void hist_assign_samples  (void);
  44 extern void hist_print           (void);
  45
  46 /* Checks if ADDRESS is within the range of addresses for which
  47    we have histogram data.  Returns 1 if so and 0 otherwise.  */
  48 extern int hist_check_address (unsigned address);
  49
  50 /* Given a range of addresses for a symbol, find a histogram record
  51    that intersects with this range, and clips the range to that
  52    histogram record, modifying *P_LOWPC and *P_HIGHPC.
  53
  54    If no intersection is found, *P_LOWPC and *P_HIGHPC will be set to
  55    one unspecified value.  If more that one intersection is found,
  56    an error is emitted.  */
  57 extern void hist_clip_symbol_address (bfd_vma *p_lowpc, bfd_vma *p_highpc);
  58
  59 #endif /* hist_h */