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1/* Low-level statistical profiling support function. Stub version.
2 Copyright (C) 1995-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#include <sys/types.h>
20#include <unistd.h>
21#include <errno.h>
22
23/* Enable statistical profiling, writing samples of the PC into at most
24 SIZE bytes of SAMPLE_BUFFER; every processor clock tick while profiling
25 is enabled, the system examines the user PC and increments
26 SAMPLE_BUFFER[((PC - OFFSET) / 2) * SCALE / 65536]. If SCALE is zero,
27 disable profiling. Returns zero on success, -1 on error. */
28
29int
30__profil (u_short *sample_buffer, size_t size, size_t offset, u_int scale)
31{
32 if (scale == 0)
33 /* Disable profiling. */
34 return 0;
35
36 __set_errno (ENOSYS);
37 return -1;
38}
39weak_alias (__profil, profil)
40stub_warning (profil)
41

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