1 files changed, 128 insertions, 0 deletions
diff --git a/os/common/oslib/include/chfifo.h b/os/common/oslib/include/chfifo.h
new file mode 100644
index 000000000..f1ca6637c
--- /dev/null
+++ b/os/common/oslib/include/chfifo.h
@@ -0,0 +1,128 @@
+/*
+    ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio.
+
+    This file is part of ChibiOS.
+
+    ChibiOS is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file    chfifo.h
+ * @brief   Objects FIFO structures and macros.
+ *
+ * @addtogroup objects_fifo
+ * @{
+ */
+
+#ifndef CHFIFO_H
+#define CHFIFO_H
+
+#if !defined(CH_CFG_USE_FIFO)
+#define CH_CFG_USE_FIFO                     FALSE
+#endif
+
+#if (CH_CFG_USE_FIFO == TRUE) || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Module constants.                                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module pre-compile time settings.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Derived constants and error checks.                                       */
+/*===========================================================================*/
+
+#if CH_CFG_USE_MEMPOOLS == FALSE
+#error "CH_CFG_USE_FIFO requires CH_CFG_USE_MEMPOOLS"
+#endif
+
+#if CH_CFG_USE_SEMAPHORES == FALSE
+#error "CH_CFG_USE_FIFO requires CH_CFG_USE_SEMAPHORES"
+#endif
+
+/*===========================================================================*/
+/* Module data structures and types.                                         */
+/*===========================================================================*/
+
+/**
+ * @brief   Type of an objects FIFO.
+ */
+typedef struct {
+  /**
+   * @brief   Pool of the free objects.
+   */
+  guarded_memory_pool_t     free;
+  /**
+   * @brief   Mailbox of the sent objects.
+   */
+  mailbox_t                 mbx;
+} objects_fifo_t;
+
+/*===========================================================================*/
+/* Module macros.                                                            */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations.                                                    */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void *chFifoAllocObjectI(objects_fifo_t *ofp);
+  void *chFifoAllocObjectTimeout(objects_fifo_t *ofp,
+                                 systime_t timeout);
+  msg_t chFifoReleaseObjectI(objects_fifo_t *ofp,
+                             void *objp);
+  msg_t chFifoReleaseObject(objects_fifo_t *ofp,
+                            void *objp);
+  msg_t chFifoPostObjectI(objects_fifo_t *ofp,
+                          void *objp);
+  msg_t chFifoPostObjectS(objects_fifo_t *ofp,
+                          void *objp);
+  msg_t chFifoPostObject(objects_fifo_t *ofp, void *obj);
+  msg_t chFifoFetchObjectI(objects_fifo_t *ofp,
+                           void **objpp);
+  msg_t chFifoFetchObjectS(objects_fifo_t *ofp,
+                           void **objpp);
+  msg_t chFifoFetchObjectTimeout(objects_fifo_t *ofp,
+                                 void **objpp,
+                                 systime_t timeout);
+#ifdef __cplusplus
+}
+#endif
+
+/*===========================================================================*/
+/* Module inline functions.                                                  */
+/*===========================================================================*/
+
+/**
+ * @brief   Initializes a mail object.
+ *
+ * @param[out] mop      pointer to a @p mail_t structure
+ *
+ * @init
+ */
+static inline void chMailObjectInit(mail_t *mop) {
+
+}
+
+#endif /* CH_CFG_USE_FIFO == TRUE */
+
+#endif /* CHFIFO_H */
+
+/** @} */