1 files changed, 106 insertions, 0 deletions
diff --git a/os/common/oslib/include/chpreempt.h b/os/common/oslib/include/chpreempt.h
new file mode 100644
index 000000000..bfa1ce270
--- /dev/null
+++ b/os/common/oslib/include/chpreempt.h
@@ -0,0 +1,106 @@
+/*
+    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    chpreempt.h
+ * @brief   Preemption enforcement structures and macros.
+ *
+ * @addtogroup preemption_enforcement
+ * @{
+ */
+
+#ifndef CHPREEMPT_H
+#define CHPREEMPT_H
+
+/* This header is included from chconf.h and that can be included by asm
+   modules.*/
+#if !defined(_FROM_ASM_)
+
+/*===========================================================================*/
+/* Module constants.                                                         */
+/*===========================================================================*/
+
+/**
+ * @brief   Hooks function @p chSchIsPreemptionRequired().
+ */
+#define CH_SCH_IS_PREEMPTION_REQUIRED_HOOKED
+
+/**
+ * @brief   Hooks function @p chSchDoReschedule().
+ */
+#define CH_SCH_DO_RESCHEDULE_HOOKED
+
+/*===========================================================================*/
+/* Module pre-compile time settings.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Derived constants and error checks.                                       */
+/*===========================================================================*/
+
+#if !defined(CH_CFG_ROUND_ROBIN_QUANTUM)
+#error "CH_CFG_ROUND_ROBIN_QUANTUM not defined in chconf.h"
+#endif
+
+#if CH_CFG_ROUND_ROBIN_QUANTUM <= 0
+#error "CH_CFG_ROUND_ROBIN_QUANTUM must be greater than zero"
+#endif
+
+#if CH_CFG_TIME_QUANTUM > 0
+#error "CH_CFG_ROUND_ROBIN_QUANTUM is not compatible with CH_CFG_TIME_QUANTUM > 0"
+#endif
+
+/*===========================================================================*/
+/* Module data structures and types.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module macros.                                                            */
+/*===========================================================================*/
+
+/**
+ * @brief   Fields to be added to the @p ch_system_t structure.
+ *
+ * @notapi
+ */
+#define CH_PREEMPT_SYSTEM_FIELDS                                            \
+  virtual_timer_t       preempt_vt;
+
+/*===========================================================================*/
+/* External declarations.                                                    */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void ch_preempt_system_init(void);
+  void ch_preempt_thread_switch(void);
+#ifdef __cplusplus
+}
+#endif
+
+/*===========================================================================*/
+/* Module inline functions.                                                  */
+/*===========================================================================*/
+
+#endif /* !defined(_FROM_ASM_) */
+
+#endif /* CHPREEMPT_H */
+
+/** @} */