Based on API interface file.
Signed-off-by: Christophe Milard <christophe.mil...@linaro.org>
---
include/odp/drv/spec/spinlock.h | 86 +++++++++++++++++++++++++++++++++++++++++
platform/Makefile.inc | 1 +
2 files changed, 87 insertions(+)
create mode 100644 include/odp/drv/spec/spinlock.h
diff --git a/include/odp/drv/spec/spinlock.h b/include/odp/drv/spec/spinlock.h
new file mode 100644
index 0000000..52efb56
--- /dev/null
+++ b/include/odp/drv/spec/spinlock.h
@@ -0,0 +1,86 @@
+/* Copyright (c) 2016, Linaro Limited
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/**
+ * @file
+ *
+ * ODPDRV spinlock
+ */
+
+#ifndef ODPDRV_API_SPINLOCK_H_
+#define ODPDRV_API_SPINLOCK_H_
+#include <odp/visibility_begin.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @addtogroup odpdrv_locks
+ * @details
+ * <b> Spin lock (odpdrv_spinlock_t) </b>
+ *
+ * Spinlock simply re-tries to acquire the lock as long as takes to succeed.
+ * Spinlock is not fair since some threads may succeed more often than others.
+ * @{
+ */
+
+/**
+ * @typedef odpdrv_spinlock_t
+ * ODPDRV spinlock
+ */
+
+/**
+ * Initialize spin lock.
+ *
+ * @param splock Pointer to a spin lock
+ */
+void odpdrv_spinlock_init(odpdrv_spinlock_t *splock);
+
+/**
+ * Acquire spin lock.
+ *
+ * @param splock Pointer to a spin lock
+ */
+void odpdrv_spinlock_lock(odpdrv_spinlock_t *splock);
+
+/**
+ * Try to acquire spin lock.
+ *
+ * @param splock Pointer to a spin lock
+ *
+ * @retval 0 lock not acquired
+ * @retval !0 lock acquired
+ */
+int odpdrv_spinlock_trylock(odpdrv_spinlock_t *splock);
+
+/**
+ * Release spin lock.
+ *
+ * @param splock Pointer to a spin lock
+ */
+void odpdrv_spinlock_unlock(odpdrv_spinlock_t *splock);
+
+/**
+ * Check if spin lock is busy (locked).
+ *
+ * @param splock Pointer to a spin lock
+ *
+ * @retval 1 lock busy (locked)
+ * @retval 0 lock not busy.
+ */
+int odpdrv_spinlock_is_locked(odpdrv_spinlock_t *splock);
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#include <odp/visibility_end.h>
+#endif
diff --git a/platform/Makefile.inc b/platform/Makefile.inc
index 900b023..404c798 100644
--- a/platform/Makefile.inc
+++ b/platform/Makefile.inc
@@ -67,5 +67,6 @@ odpdrvspecinclude_HEADERS = \
$(top_srcdir)/include/odp/drv/spec/atomic.h \
$(top_srcdir)/include/odp/drv/spec/byteorder.h \
$(top_srcdir)/include/odp/drv/spec/compiler.h \
+ $(top_srcdir)/include/odp/drv/spec/spinlock.h \
$(top_srcdir)/include/odp/drv/spec/std_types.h \
$(top_srcdir)/include/odp/drv/spec/sync.h
--
2.7.4
