From 8a365179eafdf3aea98e60ab9f5882b200d4c759 Mon Sep 17 00:00:00 2001
From: px4dev <px4@purgatory.org>
Date: Sat, 4 Aug 2012 15:12:36 -0700
Subject: Fresh import of the PX4 firmware sources.

---
 nuttx/sched/pthread_getspecific.c | 123 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 nuttx/sched/pthread_getspecific.c

(limited to 'nuttx/sched/pthread_getspecific.c')

diff --git a/nuttx/sched/pthread_getspecific.c b/nuttx/sched/pthread_getspecific.c
new file mode 100644
index 000000000..eeead14fa
--- /dev/null
+++ b/nuttx/sched/pthread_getspecific.c
@@ -0,0 +1,123 @@
+/************************************************************************
+ * sched/pthread_getspecific.c
+ *
+ *   Copyright (C) 2007, 2009 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 <sched.h>
+#include <errno.h>
+#include <debug.h>
+
+#include "os_internal.h"
+#include "pthread_internal.h"
+
+/************************************************************************
+ * Definitions
+ ************************************************************************/
+
+/************************************************************************
+ * Private Type Declarations
+ ************************************************************************/
+
+/************************************************************************
+ * Global Variables
+ ************************************************************************/
+
+/************************************************************************
+ * Private Variables
+ ************************************************************************/
+
+/************************************************************************
+ * Private Functions
+ ************************************************************************/
+
+/************************************************************************
+ * Public Functions
+ ************************************************************************/
+
+/************************************************************************
+ * Name: pthread_getspecific
+ *
+ * Description:
+ *   The pthread_getspecific() function returns the value currently
+ *   bound to the specified key on behalf of the calling thread.
+ *
+ *   The effect of calling pthread_getspecific() with with a key value
+ *   not obtained from pthread_create() or after a key has been deleted
+ *   with pthread_key_delete() is undefined.
+ *
+ * Parameters:
+ *   key = The data key to get or set
+ *
+ * Return Value:
+ *   The function pthread_getspecific() returns the thread-specific data
+ *   associated with the given key.  If no thread specific data is
+ *   associated with the key, then the value NULL is returned.
+ *
+ *      EINVAL - The key value is invalid.
+ *
+ * Assumptions:
+ *
+ * POSIX Compatibility:
+ *   - Both calling pthread_setspecific() and pthread_getspecific()
+ *     may be called from a thread-specific data destructor
+ *     function.
+ *
+ ************************************************************************/
+
+FAR void *pthread_getspecific(pthread_key_t key)
+{
+#if CONFIG_NPTHREAD_KEYS > 0
+  FAR _TCB *rtcb = (FAR _TCB*)g_readytorun.head;
+  FAR void *ret = NULL;
+
+  /* Check if the key is valid. */
+
+  if (key < g_pthread_num_keys)
+    {
+      /* Return the stored value. */
+
+      ret = rtcb->pthread_data[key];
+    }
+
+  return ret;
+#else
+  return NULL;
+#endif
+}
+
-- 
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