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66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
/* Copyright (C) 2003-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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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 License as
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published by the Free Software Foundation; either version 2.1 of the
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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; see the file COPYING.LIB. If
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not, see <http://www.gnu.org/licenses/>. */
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#include <shlib-compat.h>
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#include "compat-timer.h"
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#include <atomic.h>
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#define timer_create_alias __timer_create_new
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#include <sysdeps/unix/sysv/linux/timer_create.c>
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#undef timer_create
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versioned_symbol (librt, __timer_create_new, timer_create, GLIBC_2_3_3);
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#if SHLIB_COMPAT (librt, GLIBC_2_2, GLIBC_2_3_3)
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timer_t __compat_timer_list[OLD_TIMER_MAX] attribute_hidden;
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int
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__timer_create_old (clockid_t clock_id, struct sigevent *evp, int *timerid)
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{
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timer_t newp;
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int res = __timer_create_new (clock_id, evp, &newp);
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if (res == 0)
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{
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int i;
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for (i = 0; i < OLD_TIMER_MAX; ++i)
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if (__compat_timer_list[i] == NULL
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&& ! atomic_compare_and_exchange_bool_acq (&__compat_timer_list[i],
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newp, NULL))
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{
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*timerid = i;
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break;
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}
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if (__glibc_unlikely (i == OLD_TIMER_MAX))
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{
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/* No free slot. */
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(void) __timer_delete_new (newp);
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__set_errno (EINVAL);
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res = -1;
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}
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}
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return res;
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}
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compat_symbol (librt, __timer_create_old, timer_create, GLIBC_2_2);
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#endif
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