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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-11-10 16:06:01 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-11-10 16:06:01 +0000 |
commit | f37278039ad4c2f0bfcfaed647b01aa70ae0b5d6 (patch) | |
tree | 4ee96d4a32ac28a73800d1ca19e193d1fc7e91cd /nuttx/lib/queue/sq_addfirst.c | |
parent | 419e8f29bc9f67478830f7aae6499ee109d1d926 (diff) | |
download | px4-nuttx-f37278039ad4c2f0bfcfaed647b01aa70ae0b5d6.tar.gz px4-nuttx-f37278039ad4c2f0bfcfaed647b01aa70ae0b5d6.tar.bz2 px4-nuttx-f37278039ad4c2f0bfcfaed647b01aa70ae0b5d6.zip |
Trying to recover from deleted directory contents
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5329 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/lib/queue/sq_addfirst.c')
-rw-r--r-- | nuttx/lib/queue/sq_addfirst.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/nuttx/lib/queue/sq_addfirst.c b/nuttx/lib/queue/sq_addfirst.c new file mode 100644 index 000000000..8fc8e0619 --- /dev/null +++ b/nuttx/lib/queue/sq_addfirst.c @@ -0,0 +1,67 @@ +/************************************************************ + * lib/queue/sq_addfirst.c + * + * Copyright (C) 2007, 2011 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. + * + ************************************************************/ + +/************************************************************ + * Compilation Switches + ************************************************************/ + +/************************************************************ + * Included Files + ************************************************************/ + +#include <queue.h> + +/************************************************************ + * Public Functions + ************************************************************/ + +/************************************************************ + * Name: sq_addfirst + * + * Description: + * The sq_addfirst function places the 'node' at the head + * of the 'queue' + * + ************************************************************/ + +void sq_addfirst(FAR sq_entry_t *node, sq_queue_t *queue) +{ + node->flink = queue->head; + if (!queue->head) + { + queue->tail = node; + } + queue->head = node; +} |