lib/librte_eal/common/include/arch/x86/rte_rwlock.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2015 Intel Corporation
   3  */
   4
   5 #ifndef _RTE_RWLOCK_X86_64_H_
   6 #define _RTE_RWLOCK_X86_64_H_
   7
   8 #ifdef __cplusplus
   9 extern "C" {
  10 #endif
  11
  12 #include "generic/rte_rwlock.h"
  13 #include "rte_spinlock.h"
  14
  15 static inline void
  16 rte_rwlock_read_lock_tm(rte_rwlock_t *rwl)
  17 {
  18         if (likely(rte_try_tm(&rwl->cnt)))
  19                 return;
  20         rte_rwlock_read_lock(rwl);
  21 }
  22
  23 static inline void
  24 rte_rwlock_read_unlock_tm(rte_rwlock_t *rwl)
  25 {
  26         if (unlikely(rwl->cnt))
  27                 rte_rwlock_read_unlock(rwl);
  28         else
  29                 rte_xend();
  30 }
  31
  32 static inline void
  33 rte_rwlock_write_lock_tm(rte_rwlock_t *rwl)
  34 {
  35         if (likely(rte_try_tm(&rwl->cnt)))
  36                 return;
  37         rte_rwlock_write_lock(rwl);
  38 }
  39
  40 static inline void
  41 rte_rwlock_write_unlock_tm(rte_rwlock_t *rwl)
  42 {
  43         if (unlikely(rwl->cnt))
  44                 rte_rwlock_write_unlock(rwl);
  45         else
  46                 rte_xend();
  47 }
  48
  49 #ifdef __cplusplus
  50 }
  51 #endif
  52
  53 #endif /* _RTE_RWLOCK_X86_64_H_ */