83 lines
2 KiB
C
83 lines
2 KiB
C
/*
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error.c - Lumiera Error handling
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Copyright (C) Lumiera.org
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2008, Christian Thaeter <ct@pipapo.org>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <pthread.h>
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#include "lib/error.h"
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/**
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* @file
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* C Error handling in Lumiera.
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*/
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/*
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predefined errors
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*/
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LUMIERA_ERROR_DEFINE (ERRNO, "errno");
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/* Thread local storage */
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static pthread_key_t lumiera_error_tls;
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static pthread_once_t lumiera_error_initialized = PTHREAD_ONCE_INIT;
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static void
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lumiera_error_tls_init (void)
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{
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pthread_key_create (&lumiera_error_tls, NULL);
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}
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lumiera_err
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lumiera_error_set (lumiera_err nerr)
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{
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if (lumiera_error_initialized == PTHREAD_ONCE_INIT)
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pthread_once (&lumiera_error_initialized, lumiera_error_tls_init);
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lumiera_err err = pthread_getspecific (lumiera_error_tls);
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if (!err)
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pthread_setspecific (lumiera_error_tls, nerr);
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return err;
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}
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lumiera_err
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lumiera_error (void)
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{
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if (lumiera_error_initialized == PTHREAD_ONCE_INIT)
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pthread_once (&lumiera_error_initialized, lumiera_error_tls_init);
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lumiera_err err = pthread_getspecific (lumiera_error_tls);
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if (err)
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pthread_setspecific (lumiera_error_tls, NULL);
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return err;
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}
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lumiera_err
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lumiera_error_peek (void)
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{
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if (lumiera_error_initialized == PTHREAD_ONCE_INIT)
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pthread_once (&lumiera_error_initialized, lumiera_error_tls_init);
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return pthread_getspecific (lumiera_error_tls);
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}
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