src/platforms/common: move to platforms/common

Script to update include paths:
for i in $(grep -rl 'include <px4_work_queue' src platforms); do sed -i 's/#include <px4_work_queue/#include <px4_platform_common\/px4_work_queue/' $i; done

platforms/common/work_queue/work_queue.c

@@ -0,0 +1,138 @@
+/****************************************************************************
+ * libc/wqueue/work_queue.c
+ *
+ *   Copyright (C) 2009-2011, 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 <px4_config.h>
+#include <px4_defines.h>
+#include <px4_workqueue.h>
+#include <px4_tasks.h>
+
+#include <signal.h>
+#include <stdint.h>
+#include <queue.h>
+#include <stdio.h>
+#include <semaphore.h>
+#include "work_lock.h"
+
+#ifdef CONFIG_SCHED_WORKQUEUE
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Type Declarations
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: work_queue
+ *
+ * Description:
+ *   Queue work to be performed at a later time.  All queued work will be
+ *   performed on the worker thread of of execution (not the caller's).
+ *
+ *   The work structure is allocated by caller, but completely managed by
+ *   the work queue logic.  The caller should never modify the contents of
+ *   the work queue structure; the caller should not call work_queue()
+ *   again until either (1) the previous work has been performed and removed
+ *   from the queue, or (2) work_cancel() has been called to cancel the work
+ *   and remove it from the work queue.
+ *
+ * Input parameters:
+ *   qid    - The work queue ID (index)
+ *   work   - The work structure to queue
+ *   worker - The worker callback to be invoked.  The callback will invoked
+ *            on the worker thread of execution.
+ *   arg    - The argument that will be passed to the workder callback when
+ *            int is invoked.
+ *   delay  - Delay (in clock ticks) from the time queue until the worker
+ *            is invoked. Zero means to perform the work immediately.
+ *
+ * Returned Value:
+ *   Zero on success, a negated errno on failure
+ *
+ ****************************************************************************/
+
+int work_queue(int qid, struct work_s *work, worker_t worker, void *arg, uint32_t delay)
+{
+	struct wqueue_s *wqueue = &g_work[qid];
+
+	//DEBUGASSERT(work != NULL && (unsigned)qid < NWORKERS);
+
+	/* First, initialize the work structure */
+
+	work->worker = worker;           /* Work callback */
+	work->arg    = arg;              /* Callback argument */
+	work->delay  = delay;            /* Delay until work performed */
+
+	/* Now, time-tag that entry and put it in the work queue.  This must be
+	 * done with interrupts disabled.  This permits this function to be called
+	 * from with task logic or interrupt handlers.
+	 */
+
+	work_lock(qid);
+	work->qtime  = clock_systimer(); /* Time work queued */
+
+	dq_addlast((dq_entry_t *)work, &wqueue->q);
+#ifdef __PX4_QURT
+	px4_task_kill(wqueue->pid, SIGALRM);      /* Wake up the worker thread */
+#else
+	px4_task_kill(wqueue->pid, SIGCONT);      /* Wake up the worker thread */
+#endif
+
+	work_unlock(qid);
+	return PX4_OK;
+}
+
+#endif /* CONFIG_SCHED_WORKQUEUE */