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