marble buffer

The concept of cyclic buffer (ring buffer), in fact from the Linux kernel (Maybe), provides a lock-free method for solving competition problems in some special situations. This particular situation is when the producer and the consumer have only one, and in other cases it must be locked. Corresponds to the definition of it in the Linux kernel: struct Kfifo { unsigned char *

This article provides a detailed analysis of php buffer output_buffering. For more information, see Buffer Buffer is a memory address space. the default size of a Linux system is generally 4096 (4 KB), that is, a memory page. It is mainly used for data transmission between devices with different storage speeds or devices with different priorities. Through the

Buffer Buffer is a memory address space, the Linux system default size is generally 4096 (4KB), that is, a memory page. It is primarily used to store data between devices that are out of sync or between devices with different priority levels. By using buffer, you can make the process less of a mutual wait. Here is a popular example, when you open a text editor t

1. The difference between buffer and cache650) this.width=650; "Src=" Http://s4.51cto.com/wyfs02/M00/8B/64/wKiom1hL2fuxvFDCAAA4AR6R74E921.png-wh_500x0-wm_3 -wmp_4-s_199177087.png the difference between the "title=" buffer and the cache. png "alt=" wkiom1hl2fuxvfdcaaa4ar6r74e921.png-wh_50 "/>The difference between buffer and cache

Cachevsbufferbothcacheandbufferaretemporarystorageareas buttheydifferinmanyways.Thebufferismainly Foundinramandactsasanareawherethecpucan storedatatemporarily,forexample,datameantforother Outputdevicesmainlywhenthecomputerandtheotherdevices havedifferentspeeds.Thiswaythecomputercanperform othertasks.cache,ontheotherhand,isahigh-speed storageareathatcanbepartofthemainmemoryor Someotherseparatestoragearealikeaharddisk.thesetwo methodsofcachingarereferredtoasmemorycachinganddiskcaching respectively

data in Expect_out (buffer) that contains send I always thought that once the send is executed in expect, expect_out (buffer) is emptied until new data is filled in, which is exactly what is used in the expect statement. And today in debugging, I was surprised to find the problem, the original expect_out (buffer) will not be automatically emptied, and expect to t

The author introduces: Jiang Xiewei, IT company technical partner, it senior lecturer, CSDN Community experts, invited editors, best-selling authors, published books: "Hands-on teaching you architecture 3D Game Engine" Electronics publishing house and "Unity3d actual combat core technical details" Electronic industry publishing house and so on. CSDN Video URL: http://edu.csdn.net/lecturer/144 what is a buffer. The temporary storage area is called a

First, InnoDB change buffer introduction:1. InnoDB change buffer is an optimization of disk IO for OLTP scenarios (I also feel that this is not very like a word, but it is very accurate to explainInnoDB Change buffer function)Second, InnoDB change buffer principle:　　For INSERT, UPDATE, delete operation to update the da

Label:InnoDB plugin feature Description: Keep buffer pool from being contaminated A big advantage over MyISAM is that InnoDB caches blocks of data. If the amount of data in the system is not large, or if the amount of active data is not large, InnoDB will cache all of these blocks into buffer Pool (memory), which maximizes the response speed provided, especially reading. When a user requests a data block to

For the buffer design, the practice of chaos and other network libraries is slightly different, take the libevent-stable-1.4.13 (the libevent mentioned below is the version, it uses a buffer that can be automatically expanded. The basic strategy is as follows: 1. When the buffer zone is insufficient to store new data, it will first perform internal marshal to s

[JAVA] [NIO] 4. Java NIO Buffer, javaniobuffer The Buffer of Java NIO is used to interact with the channel.Buffer is essentially a memory block. You can write data and read it out.This memory block is packaged through the NIO Buffer object, which provides a series of methods to make access to the memory block easier.Basic Bu