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glibc  2.9
profil.c
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00001 /* Low-level statistical profiling support function.  Stub version.
00002    Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <sys/types.h>
00021 #include <unistd.h>
00022 #include <errno.h>
00023 
00024 /* Enable statistical profiling, writing samples of the PC into at most
00025    SIZE bytes of SAMPLE_BUFFER; every processor clock tick while profiling
00026    is enabled, the system examines the user PC and increments
00027    SAMPLE_BUFFER[((PC - OFFSET) / 2) * SCALE / 65536].  If SCALE is zero,
00028    disable profiling.  Returns zero on success, -1 on error.  */
00029 
00030 int
00031 __profil (u_short *sample_buffer, size_t size, size_t offset, u_int scale)
00032 {
00033   if (scale == 0)
00034     /* Disable profiling.  */
00035     return 0;
00036 
00037   __set_errno (ENOSYS);
00038   return -1;
00039 }
00040 weak_alias (__profil, profil)
00041 stub_warning (profil)
00042 #include <stub-tag.h>