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#ifndef _LTTNG_ERROR_H
#define _LTTNG_ERROR_H
/*
* Copyright (c) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* This 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; only
* version 2.1 of the License.
*
* This 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <urcu/compiler.h>
#include <unistd.h>
#define MAX_ERRNO 4095
static inline
int IS_ERR_VALUE(long value)
{
if (caa_unlikely((unsigned long) value >= (unsigned long) -MAX_ERRNO))
return 1;
else
return 0;
}
static inline
void *ERR_PTR(long error)
{
return (void *) error;
}
static inline
long PTR_ERR(const void *ptr)
{
return (long) ptr;
}
static inline
int IS_ERR(const void *ptr)
{
return IS_ERR_VALUE((long) ptr);
}
#endif /* _LTTNG_ERROR_H */
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