greenplumn arch-ia64 源码
greenplumn arch-ia64 代码
文件路径：/src/include/port/atomics/arch-ia64.h
/*-------------------------------------------------------------------------
*
* arch-ia64.h
* Atomic operations considerations specific to intel itanium
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* NOTES:
*
* src/include/port/atomics/arch-ia64.h
*
*-------------------------------------------------------------------------
*/
/*
* Itanium is weakly ordered, so read and write barriers require a full
* fence.
*/
#if defined(__INTEL_COMPILER)
# define pg_memory_barrier_impl() __mf()
#elif defined(__GNUC__)
# define pg_memory_barrier_impl() __asm__ __volatile__ ("mf" : : : "memory")
#elif defined(__hpux)
# define pg_memory_barrier_impl() _Asm_mf()
#endif
/* per architecture manual doubleword accesses have single copy atomicity */
#define PG_HAVE_8BYTE_SINGLE_COPY_ATOMICITY
相关信息
相关文章
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦