mirror of https://gitee.com/openkylin/glibc.git
41 lines
1.5 KiB
C
41 lines
1.5 KiB
C
/* Low-level statistical profiling support function. Stub version.
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Copyright (C) 1995-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <sys/types.h>
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#include <unistd.h>
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#include <errno.h>
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/* Enable statistical profiling, writing samples of the PC into at most
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SIZE bytes of SAMPLE_BUFFER; every processor clock tick while profiling
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is enabled, the system examines the user PC and increments
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SAMPLE_BUFFER[((PC - OFFSET) / 2) * SCALE / 65536]. If SCALE is zero,
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disable profiling. Returns zero on success, -1 on error. */
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int
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__profil (u_short *sample_buffer, size_t size, size_t offset, u_int scale)
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{
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if (scale == 0)
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/* Disable profiling. */
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return 0;
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__set_errno (ENOSYS);
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return -1;
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}
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weak_alias (__profil, profil)
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stub_warning (profil)
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