类Arena内已有一块缓冲区buffer,每次调用AlignedAllocate<T>(size_t alignment)函数时,即需要从buffer中取出大小为sizeof(T)的一块内存ptr,AlignedAllocate函数的输入参数alignment指定了获得的内存ptr满足的内存对齐要求。 现在来看看实现。 template <size_t N> struct Arena
The present invention relates to an alignment buffer device and a substrate processing device that can shorten the process time by transporting an aligned wafer over the shortest distance, comprising: a body portion; An alignment unit formed at the lower part of the body unit and rotates the ...
ALLOC_CACHE_ALIGN_BUFFER(u32, tmpbuf, 1);cpu_to_le32s(&data); tmpbuf[0] = data;len = usb_control_msg(dev->pusb_dev, usb_sndctrlpipe(dev->pusb_dev, 0), USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, ...
heapBufferSizeAndAlign(length:options:) Returns the size and alignment, in bytes, of a buffer if you create it from a heap. iOS 10.0+iPadOS 10.0+Mac Catalyst 13.1+macOS 10.13+tvOS 10.0+visionOS 1.0+ funcheapBufferSizeAndAlign(length:Int,options:MTLResourceOptions= [] ) ->MTLSizeAndAlign ...
for this case, the align buffer is not going to be used. However, we still map and unmap this buffer. Eliminate this by switching the align buffer to be a DMA coherent buffer, which needs no DMA maintenance to access the buffer.
其中,LWIP也有定义相应的宏定义,来申请所需要的内存大小(可以保证对齐后依旧能满足大小需求) #define LWIP_MEM_ALIGN_BUFFER(size) (((size) + MEM_ALIGNMENT - 1))
#include<type_traits> // std::alignment_of()#include<memory>//...charbuffer[256];// for simplicitysize_talignment =std::alignment_of<int>::value;void* ptr = buffer;std::size_tspace =sizeof(buffer);// Be sure this results in the true size of your bufferwhile(alignment,sizeof(MyObj...
buffer.position((int) FBUtilities.align(curPos, blockSize)); } 代码示例来源:origin: com.strapdata.cassandra/cassandra-all protected static void alignBuffer(ByteBuffer buffer, int blockSize) { long curPos = buffer.position(); if ((curPos & (blockSize - 1)) != 0) // align on the block...
> of 10% on hdparm buffered disk reads. > > MMC/SD card IO comes from the mm/vfs which gives us page based IO, so > for this case, the align buffer is not going to be used. However, we > still map and unmap this buffer....
detectalignfacewithbufferdetect align face with buffer 检测与缓冲区对齐的面 重点词汇 align使一致;排列;校准;使成一条直线;排整齐 face with使面临;把…摆在面前©2022 Baidu |由 百度智能云 提供计算服务 | 使用百度前必读 | 文库协议 | 网站地图 | 百度营销 ...