diff options
Diffstat (limited to 'storage/xtradb/include/os0sync.h')
| -rw-r--r-- | storage/xtradb/include/os0sync.h | 47 |
1 files changed, 23 insertions, 24 deletions
diff --git a/storage/xtradb/include/os0sync.h b/storage/xtradb/include/os0sync.h index a60dcbd1e75..b52c078fa54 100644 --- a/storage/xtradb/include/os0sync.h +++ b/storage/xtradb/include/os0sync.h @@ -1,6 +1,6 @@ /***************************************************************************** -Copyright (c) 1995, 2015, Oracle and/or its affiliates. All Rights Reserved. +Copyright (c) 1995, 2016, Oracle and/or its affiliates. All Rights Reserved. Copyright (c) 2008, Google Inc. Portions of this file contain modifications contributed and copyrighted by @@ -41,7 +41,6 @@ Created 9/6/1995 Heikki Tuuri || defined _M_X64 || defined __WIN__ #define IB_STRONG_MEMORY_MODEL -#undef HAVE_IB_GCC_ATOMIC_TEST_AND_SET // Quick-and-dirty fix for bug 1519094 #endif /* __i386__ || __x86_64__ || _M_IX86 || M_X64 || __WIN__ */ @@ -369,28 +368,7 @@ Returns the old value of *ptr, atomically sets *ptr to new_val */ # define os_atomic_test_and_set_byte_acquire(ptr, new_val) \ __sync_lock_test_and_set(ptr, (byte) new_val) -# if defined(HAVE_IB_GCC_ATOMIC_TEST_AND_SET) - -/** Do an atomic test-and-set. -@param[in,out] ptr Memory location to set to non-zero -@return the previous value */ -static inline -lock_word_t -os_atomic_test_and_set(volatile lock_word_t* ptr) -{ - return(__atomic_test_and_set(ptr, __ATOMIC_ACQUIRE)); -} - -/** Do an atomic clear. -@param[in,out] ptr Memory location to set to zero */ -static inline -void -os_atomic_clear(volatile lock_word_t* ptr) -{ - __atomic_clear(ptr, __ATOMIC_RELEASE); -} - -# elif defined(IB_STRONG_MEMORY_MODEL) +# if defined(IB_STRONG_MEMORY_MODEL) /** Do an atomic test and set. @param[in,out] ptr Memory location to set to non-zero @@ -419,6 +397,27 @@ os_atomic_clear(volatile lock_word_t* ptr) return(__sync_lock_test_and_set(ptr, 0)); } +# elif defined(HAVE_IB_GCC_ATOMIC_TEST_AND_SET) + +/** Do an atomic test-and-set. +@param[in,out] ptr Memory location to set to non-zero +@return the previous value */ +static inline +lock_word_t +os_atomic_test_and_set(volatile lock_word_t* ptr) +{ + return(__atomic_test_and_set(ptr, __ATOMIC_ACQUIRE)); +} + +/** Do an atomic clear. +@param[in,out] ptr Memory location to set to zero */ +static inline +void +os_atomic_clear(volatile lock_word_t* ptr) +{ + __atomic_clear(ptr, __ATOMIC_RELEASE); +} + # else # error "Unsupported platform" |