1 files changed, 70 insertions, 0 deletions
diff --git a/platform/linux-generic/odp_spinlock_recursive.c b/platform/linux-generic/odp_spinlock_recursive.c
new file mode 100644
index 000000000..8ffe6b3dd
--- /dev/null
+++ b/platform/linux-generic/odp_spinlock_recursive.c
@@ -0,0 +1,70 @@
+/* Copyright (c) 2013, Linaro Limited
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier:     BSD-3-Clause
+ */
+
+#include <odp/spinlock_recursive.h>
+#include <odp/thread.h>
+
+#define NO_OWNER (-1)
+
+void odp_spinlock_recursive_init(odp_spinlock_recursive_t *rlock)
+{
+	odp_spinlock_init(&rlock->lock);
+	rlock->owner = NO_OWNER;
+	rlock->cnt   = 0;
+}
+
+void odp_spinlock_recursive_lock(odp_spinlock_recursive_t *rlock)
+{
+	int thr = odp_thread_id();
+
+	if (rlock->owner == thr) {
+		rlock->cnt++;
+		return;
+	}
+
+	odp_spinlock_lock(&rlock->lock);
+	rlock->owner = thr;
+	rlock->cnt   = 1;
+}
+
+int odp_spinlock_recursive_trylock(odp_spinlock_recursive_t *rlock)
+{
+	int thr = odp_thread_id();
+
+	if (rlock->owner == thr) {
+		rlock->cnt++;
+		return 1;
+	}
+
+	if (odp_spinlock_trylock(&rlock->lock)) {
+		rlock->owner = thr;
+		rlock->cnt   = 1;
+		return 1;
+	} else {
+		return 0;
+	}
+}
+
+void odp_spinlock_recursive_unlock(odp_spinlock_recursive_t *rlock)
+{
+	rlock->cnt--;
+
+	if (rlock->cnt > 0)
+		return;
+
+	rlock->owner = NO_OWNER;
+	odp_spinlock_unlock(&rlock->lock);
+}
+
+int odp_spinlock_recursive_is_locked(odp_spinlock_recursive_t *rlock)
+{
+	int thr = odp_thread_id();
+
+	if (rlock->owner == thr)
+		return 1;
+
+	return odp_spinlock_is_locked(&rlock->lock);
+}