libgcc/gcov.h

   1 /* GCOV interface routines.
   2    Copyright (C) 2017-2023 Free Software Foundation, Inc.
   3
   4    This file is part of GCC.
   5
   6    GCC is free software; you can redistribute it and/or modify it under
   7    the terms of the GNU General Public License as published by the Free
   8    Software Foundation; either version 3, or (at your option) any later
   9    version.
  10
  11    GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12    WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14    for more details.
  15
  16    Under Section 7 of GPL version 3, you are granted additional
  17    permissions described in the GCC Runtime Library Exception, version
  18    3.1, as published by the Free Software Foundation.
  19
  20    You should have received a copy of the GNU General Public License and
  21    a copy of the GCC Runtime Library Exception along with this program;
  22    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23    <http://www.gnu.org/licenses/>.  */
  24
  25 #ifndef GCC_GCOV_H
  26 #define GCC_GCOV_H
  27
  28 struct gcov_info;
  29
  30 /* Set all counters to zero.  */
  31
  32 extern void __gcov_reset (void);
  33
  34 /* Write profile information to a file.  */
  35
  36 extern void __gcov_dump (void);
  37
  38 /* Convert the gcov information referenced by INFO to a gcda data stream.
  39    The FILENAME_FN callback is called exactly once with the filename associated
  40    with the gcov information.  The filename may be NULL.  Afterwards, the
  41    DUMP_FN callback is subsequently called with chunks (the begin and length of
  42    the chunk are passed as the first two callback parameters) of the gcda data
  43    stream.  The ALLOCATE_FN callback shall allocate memory with a size in
  44    characters specified by the first callback parameter.  The ARG parameter is
  45    a user-provided argument passed as the last argument to the callback
  46    functions.  It is recommended to use the __gcov_filename_to_gcfn()
  47    in the filename callback function.  */
  48
  49 extern void
  50 __gcov_info_to_gcda (const struct gcov_info *__info,
  51                      void (*__filename_fn) (const char *, void *),
  52                      void (*__dump_fn) (const void *, unsigned, void *),
  53                      void *(*__allocate_fn) (unsigned, void *),
  54                      void *__arg);
  55
  56 /* Convert the FILENAME to a gcfn data stream.  The DUMP_FN callback is
  57    subsequently called with chunks (the begin and length of the chunk are
  58    passed as the first two callback parameters) of the gcfn data stream.
  59    The ARG parameter is a user-provided argument passed as the last
  60    argument to the DUMP_FN callback function.  This function is intended
  61    to be used by the filename callback of __gcov_info_to_gcda().  The gcfn
  62    data stream is used by the merge-stream subcommand of the gcov-tool to
  63    get the filename associated with a gcda data stream.  */
  64
  65 extern void
  66 __gcov_filename_to_gcfn (const char *__filename,
  67                          void (*__dump_fn) (const void *, unsigned, void *),
  68                          void *__arg);
  69
  70 #endif /* GCC_GCOV_H */