gmon/sys/profil.h

   1 /* Copyright (C) 2001-2024 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _PROFIL_H
  19 #define _PROFIL_H       1
  20
  21 #include <features.h>
  22
  23 #include <sys/time.h>
  24 #include <sys/types.h>
  25
  26 /* This interface is intended to follow the sprofil() system calls as
  27    described by the sprofil(2) man page of Irix v6.5, except that:
  28
  29         - there is no a priori limit on number of text sections
  30         - pr_scale is declared as unsigned long (instead of "unsigned int")
  31         - pr_size is declared as size_t (instead of "unsigned int")
  32         - pr_off is declared as void * (instead of "__psunsigned_t")
  33         - the overflow bin (pr_base==0, pr_scale==2) can appear anywhere
  34           in the profp array
  35         - PROF_FAST has no effect  */
  36
  37 struct prof
  38   {
  39     void *pr_base;              /* buffer base */
  40     size_t pr_size;             /* buffer size */
  41     size_t pr_off;              /* pc offset */
  42     unsigned long int pr_scale; /* pc scaling (fixed-point number) */
  43   };
  44
  45 enum
  46   {
  47     PROF_USHORT = 0,            /* use 16-bit counters (default) */
  48     PROF_UINT   = 1 << 0,       /* use 32-bit counters */
  49     PROF_FAST   = 1 << 1        /* profile faster than usual */
  50   };
  51
  52
  53 __BEGIN_DECLS
  54
  55 extern int sprofil (struct prof *__profp, int __profcnt,
  56                     struct timeval *__tvp, unsigned int __flags) __THROW;
  57
  58 __END_DECLS
  59
  60 #endif /* profil.h */