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author | Gregory Nutt <gnutt@nuttx.org> | 2014-09-23 15:50:45 -0600 |
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committer | Gregory Nutt <gnutt@nuttx.org> | 2014-09-23 15:50:45 -0600 |
commit | 9218ceb2a528f762b23cf523928987ba020aa0ed (patch) | |
tree | 22d248f4a7094a61ccbe1b0d9e7d03c5899b4637 /nuttx/mm | |
parent | 82ea3b6c80d5de6c1a4916bbd6e87a807d92eac5 (diff) | |
download | nuttx-9218ceb2a528f762b23cf523928987ba020aa0ed.tar.gz nuttx-9218ceb2a528f762b23cf523928987ba020aa0ed.tar.bz2 nuttx-9218ceb2a528f762b23cf523928987ba020aa0ed.zip |
Add interfaces to support un-initializing a granule allocator.
Diffstat (limited to 'nuttx/mm')
-rw-r--r-- | nuttx/mm/mm_gran/mm_granrelease.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/nuttx/mm/mm_gran/mm_granrelease.c b/nuttx/mm/mm_gran/mm_granrelease.c new file mode 100644 index 000000000..1c228fa53 --- /dev/null +++ b/nuttx/mm/mm_gran/mm_granrelease.c @@ -0,0 +1,123 @@ +/**************************************************************************** + * mm/mm_gran/mm_graninit.c + * + * Copyright (C) 2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * 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 <assert.h> +#include <errno.h> + +#include <nuttx/gran.h> +#include <nuttx/kmalloc.h> + +#include "mm_gran/mm_gran.h" + +#ifdef CONFIG_GRAN + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/* State of the single GRAN allocator */ + +#ifdef CONFIG_GRAN_SINGLE +FAR struct gran_s *g_graninfo; +#endif + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: gran_release_common + * + * Description: + * Perform common GRAN initialization. + * + * Input Parameters: + * priv - Reference to the granule heap structure to be released. + * + * Returned Value: + * None + * + ****************************************************************************/ + +static inline void gran_release_common(FAR struct gran_s *priv) +{ + DEBUGASSERT(priv); + sem_destroy(&priv->exclsem); + kmm_free(priv); +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: gran_release + * + * Description: + * Uninitialize a gram memory allocator and release resources held by the + * allocator. + * + * Input Parameters: + * handle - The handle previously returned by gran_initialize + * + * Returned Value: + * None. + * + ****************************************************************************/ + +#ifdef CONFIG_GRAN_SINGLE +void gran_release(void) +{ + gran_release_common(g_graninfo); + g_graninfo = NULL; +} +#else +void gran_release(GRAN_HANDLE handle) +{ + gran_release_common(handle); +} +#endif + +#endif /* CONFIG_GRAN */ |