diff options
Diffstat (limited to 'nuttx/arch/x86/src/i486/up_releasestack.c')
-rw-r--r-- | nuttx/arch/x86/src/i486/up_releasestack.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/nuttx/arch/x86/src/i486/up_releasestack.c b/nuttx/arch/x86/src/i486/up_releasestack.c new file mode 100644 index 000000000..ac93688d6 --- /dev/null +++ b/nuttx/arch/x86/src/i486/up_releasestack.c @@ -0,0 +1,79 @@ +/**************************************************************************** + * arch/x86/src/common/up_releasestack.c + * + * Copyright (C) 2011 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 NuttX 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 <nuttx/config.h> + +#include <sched.h> +#include <debug.h> +#include <nuttx/arch.h> + +#include "os_internal.h" +#include "up_internal.h" + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_release_stack + * + * Description: + * A task has been stopped. Free all stack related resources retained in + * the defunct TCB. + * + ****************************************************************************/ + +void up_release_stack(_TCB *dtcb) +{ + if (dtcb->stack_alloc_ptr) + { + sched_free(dtcb->stack_alloc_ptr); + dtcb->stack_alloc_ptr = NULL; + } + + dtcb->adj_stack_size = 0; +} |