move posix, nuttx, qurt components into platforms

platforms/posix/include/hrt_work.h

@@ -0,0 +1,63 @@
+/****************************************************************************
+ *
+ * Copyright (C) 2015 Mark Charlebois. All rights reserved.
+ *
+ * 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 PX4 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.
+ *
+ ****************************************************************************/
+
+#include <px4_log.h>
+#include <px4_posix.h>
+#include <semaphore.h>
+#include <px4_workqueue.h>
+
+#pragma once
+
+__BEGIN_DECLS
+
+extern px4_sem_t _hrt_work_lock;
+extern struct wqueue_s g_hrt_work;
+
+void hrt_work_queue_init(void);
+int hrt_work_queue(struct work_s *work, worker_t worker, void *arg, uint32_t usdelay);
+void hrt_work_cancel(struct work_s *work);
+
+static inline void hrt_work_lock(void);
+static inline void hrt_work_lock()
+{
+	px4_sem_wait(&_hrt_work_lock);
+}
+
+static inline void hrt_work_unlock(void);
+static inline void hrt_work_unlock()
+{
+	px4_sem_post(&_hrt_work_lock);
+}
+
+__END_DECLS
+