diff options
Diffstat (limited to 'stacks/lwip_stack/src/include/common/common_mem_spinlock.h')
| -rw-r--r-- | stacks/lwip_stack/src/include/common/common_mem_spinlock.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/stacks/lwip_stack/src/include/common/common_mem_spinlock.h b/stacks/lwip_stack/src/include/common/common_mem_spinlock.h new file mode 100644 index 0000000..23f6b1e --- /dev/null +++ b/stacks/lwip_stack/src/include/common/common_mem_spinlock.h @@ -0,0 +1,40 @@ +/* +* +* 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_ */ |