1 files changed, 118 insertions, 0 deletions
diff --git a/nuttx/sched/sig_cleanup.c b/nuttx/sched/sig_cleanup.c
new file mode 100644
index 000000000..4dcc04f8b
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+++ b/nuttx/sched/sig_cleanup.c
@@ -0,0 +1,118 @@
+/************************************************************************
+ * sched/sig_cleanup.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 <nuttx/arch.h>
+
+#include "os_internal.h"
+#include "sig_internal.h"
+
+/************************************************************************
+ * Definitions
+ ************************************************************************/
+
+/************************************************************************
+ * Private Type Declarations
+ ************************************************************************/
+
+/************************************************************************
+ * Global Variables
+ ************************************************************************/
+
+/************************************************************************
+ * Private Variables
+ ************************************************************************/
+
+/************************************************************************
+ * Private Functions
+ ************************************************************************/
+
+/************************************************************************
+ * Public Functions
+ ************************************************************************/
+
+/************************************************************************
+ * Name: sig_cleanup
+ *
+ * Description:
+ *   Deallocate all signal-related lists in a TCB.  This function is
+ *   called only at task deletion time.  The caller is expected to have
+ *   assured the critical section necessary to perform this action.
+ *
+ ************************************************************************/
+
+void sig_cleanup(FAR _TCB *stcb)
+{
+  FAR sigactq_t  *sigact;
+  FAR sigq_t     *sigq;
+  FAR sigpendq_t *sigpend;
+
+  /* Deallocate all entries in the list of signal actions */
+
+  while ((sigact = (FAR sigactq_t*)sq_remfirst(&stcb->sigactionq)) != NULL)
+    {
+      sig_releaseaction(sigact);
+    }
+
+  /* Deallocate all entries in the list of pending signals */
+
+  while ((sigpend = (FAR sigpendq_t*)sq_remfirst(&stcb->sigpendingq)) != NULL)
+    {
+      sig_releasependingsignal(sigpend);
+    }
+
+  /* Deallocate all entries in the list of pending signal actions */
+
+  while ((sigq = (FAR sigq_t*)sq_remfirst(&stcb->sigpendactionq)) != NULL)
+    {
+      sig_releasependingsigaction(sigq);
+    }
+
+  /* Deallocate all entries in the list of posted signal actions */
+
+  while ((sigq = (FAR sigq_t*)sq_remfirst(&stcb->sigpostedq)) != NULL)
+    {
+      sig_releasependingsigaction(sigq);
+    }
+
+   /* Misc. signal-related clean-up */
+
+   stcb->sigprocmask  = ALL_SIGNAL_SET;
+   stcb->sigwaitmask  = NULL_SIGNAL_SET;
+}