| 术语 | prefetchcacheline |
| 释义 | PreFetchCacheLine 语法： C++ void PreFetchCacheLine( int Level, VOID CONST *Address ); PreFetchCacheLine宏 指示的一个缓存行会在不久的将来需要的处理器。 参数 级别 多久高速缓存行是必要的。此参数可以是下列值之一。 ValueMeaning PF_TEMPORAL_LEVEL_1The高速缓存行应该被加载到所有缓存，并可能被访问多次。 PF_NON_TEMPORAL_LEVEL_ALLThe缓存行不很可能需要在第一次提到了。 地址 高速缓存行地址被加载。这个地址是不须在缓存行的边界。 返回值 此宏没有返回值。 备注 此宏可以说是所有的处理器在Windows是支持的平台，但它无权在某些平台上的影响。该定义各不相同的平台，平台。以下是这部分在WINNT.H宏的定义： #define PreFetchCacheLine(l, a) _mm_prefetch((CHAR CONST *) a, l) #define PreFetchCacheLine(l, a) #define PreFetchCacheLine __lfetch 要求： client最低支持Vista 最低支持serverWindows服务器2003 HeaderWinnt.h(头文件：winuser.h) 如果有任何问题和意见，请发送给微软(wsddocfb@microsoft.com) 生成日期：2009年8月27日 ＝＝英文原文＝＝PreFetchCacheLine Macro Indicates to the processor that a cache line will be needed in the near future. Syntax C++ void PreFetchCacheLine( int Level, VOID CONST *Address ); Parameters Level How often the cache line will be needed. This parameter can be one of the following values. ValueMeaning PF_TEMPORAL_LEVEL_1The cache line should be loaded into all caches and is likely to be accessed multiple times. PF_NON_TEMPORAL_LEVEL_ALLThe cache line is not likely to be needed again after the first reference. Address The address of the cache line to be loaded. This address is not required to be on a cache line boundary. Return Value This macro does not return a value. Remarks This macro can be called on all processor platforms where Windows is supported, but it has no effect on some platforms. The definition varies from platform to platform. The following are some definitions of this macro in Winnt.h: #define PreFetchCacheLine(l, a) _mm_prefetch((CHAR CONST *) a, l) #define PreFetchCacheLine(l, a) #define PreFetchCacheLine __lfetch Requirements Minimum supported clientWindows Vista Minimum supported serverWindows Server 2003 HeaderWinnt.h (include Windows.h) Send comments about this topic to Microsoft Build date: 8/27/2009 ＝＝原始网址＝＝http://msdn.microsoft.com/en-us/library/ms684826(VS.85).aspx\n |
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