| /* Low-level statistical profiling support function. Stub version. |
| Copyright (C) 1995-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <sys/types.h> |
| #include <unistd.h> |
| #include <errno.h> |
| |
| /* Enable statistical profiling, writing samples of the PC into at most |
| SIZE bytes of SAMPLE_BUFFER; every processor clock tick while profiling |
| is enabled, the system examines the user PC and increments |
| SAMPLE_BUFFER[((PC - OFFSET) / 2) * SCALE / 65536]. If SCALE is zero, |
| disable profiling. Returns zero on success, -1 on error. */ |
| |
| int |
| __profil (u_short *sample_buffer, size_t size, size_t offset, u_int scale) |
| { |
| if (scale == 0) |
| /* Disable profiling. */ |
| return 0; |
| |
| __set_errno (ENOSYS); |
| return -1; |
| } |
| weak_alias (__profil, profil) |
| stub_warning (profil) |
