Feature: 19.04 part-2DMM-2

Change-Id: I0b52a6bb67c25c7955d58e29eb81a3cc9efea9e9
Signed-off-by: sharath reddy <bs.reddy@huawei.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/stacks/lwip_stack/src/include/common_mem_spinlock.h b/stacks/lwip_stack/src/include/common_mem_spinlock.h
new file mode 100644
index 0000000..482e87b
--- /dev/null
+++ b/stacks/lwip_stack/src/include/common_mem_spinlock.h
@@ -0,0 +1,38 @@
+/*
+*
+* Copyright (c) 2018 Huawei Technologies Co.,Ltd.
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at:
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#ifndef _COMMON_MEM_SPINLOCK_X86_64_H_
+#define _COMMON_MEM_SPINLOCK_X86_64_H_
+
+#ifdef HAL_LIB
+#else
+#include "rte_spinlock.h"
+
+static inline void dmm_spinlock_lock_with_pid(rte_spinlock_t * sl, int pid)
+{
+    while (!__sync_bool_compare_and_swap(&sl->locked, 0, pid))
+        while (sl->locked)
+            rte_pause();
+}
+
+static inline int dmm_spinlock_try_lock_with_pid(rte_spinlock_t * sl, int pid)
+{
+    return __sync_bool_compare_and_swap(&sl->locked, 0, pid);
+}
+
+#endif
+
+#endif /* _COMMON_MEM_SPINLOCK_X86_64_H_ */