diff options
Diffstat (limited to 'nuttx/sched/get_errno_ptr.c')
-rw-r--r-- | nuttx/sched/get_errno_ptr.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/nuttx/sched/get_errno_ptr.c b/nuttx/sched/get_errno_ptr.c new file mode 100644 index 0000000000..c9f0d52c84 --- /dev/null +++ b/nuttx/sched/get_errno_ptr.c @@ -0,0 +1,70 @@ +/************************************************************ + * get_errno_ptr.c + * + * Copyright (C) 2007 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name Gregory Nutt nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ************************************************************/ + +/************************************************************ + * Included Files + ************************************************************/ + +#include <sched.h> +#include <errno.h> +#include "os_internal.h" + +/************************************************************ + * Global Functions + ************************************************************/ + +/************************************************************ + * Function: get_errno_ptr + * + * Description: + * Return a pointer to the thread specific errno. + * + * Parameters: + * None + * + * Return Value: + * A pointer to the per-thread errno variable. + * + * Assumptions: + * + ************************************************************/ + +int *get_errno_ptr(void) +{ + _TCB *ptcb = (_TCB*)g_readytorun.head; + return &ptcb->errno; +} + + |