Move POSIX message queue files from sched/ to sched/mqueue

2026-09-27 18:58:27 +08:00 · 2014-08-08 12:31:23 -06:00
parent b1f10adf5a
commit 08879ca34c
25 changed files with 103 additions and 63 deletions
@@ -0,0 +1,134 @@
+/************************************************************************
+ *  sched/mqueue/mq_msgfree.c
+ *
+ *   Copyright (C) 2007, 2013 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 <queue.h>
+#include <nuttx/arch.h>
+#include "os_internal.h"
+#include "mqueue/mqueue.h"
+
+/************************************************************************
+ * Definitions
+ ************************************************************************/
+
+/************************************************************************
+ * Private Type Declarations
+ ************************************************************************/
+
+/************************************************************************
+ * Global Variables
+ ************************************************************************/
+
+/************************************************************************
+ * Private Variables
+ ************************************************************************/
+
+/************************************************************************
+ * Private Functions
+ ************************************************************************/
+
+/************************************************************************
+ * Public Functions
+ ************************************************************************/
+
+/************************************************************************
+ * Name: mq_msgfree
+ *
+ * Description:
+ *   The mq_msgfree function will return a message to the free pool of
+ *   messages if it was a pre-allocated message. If the message was
+ *   allocated dynamically it will be deallocated.
+ *
+ * Inputs:
+ *   mqmsg - message to free
+ *
+ * Return Value:
+ *   None
+ *
+ ************************************************************************/
+
+void mq_msgfree(FAR mqmsg_t *mqmsg)
+{
+  irqstate_t saved_state;
+
+  /* If this is a generally available pre-allocated message,
+   * then just put it back in the free list.
+   */
+
+  if (mqmsg->type == MQ_ALLOC_FIXED)
+    {
+      /* Make sure we avoid concurrent access to the free
+       * list from interrupt handlers.
+       */
+
+      saved_state = irqsave();
+      sq_addlast((FAR sq_entry_t*)mqmsg, &g_msgfree);
+      irqrestore(saved_state);
+    }
+
+  /* If this is a message pre-allocated for interrupts,
+   * then put it back in the correct  free list.
+   */
+
+  else if (mqmsg->type == MQ_ALLOC_IRQ)
+    {
+      /* Make sure we avoid concurrent access to the free
+       * list from interrupt handlers.
+       */
+
+      saved_state = irqsave();
+      sq_addlast((FAR sq_entry_t*)mqmsg, &g_msgfreeirq);
+      irqrestore(saved_state);
+    }
+
+  /* Otherwise, deallocate it.  Note:  interrupt handlers
+   * will never deallocate messages because they will not
+   * received them.
+   */
+
+  else if (mqmsg->type == MQ_ALLOC_DYN)
+    {
+      sched_kfree(mqmsg);
+    }
+  else
+    {
+      PANIC();
+    }
+}