file offset

The format of unity3d asset bundle is not public. However, we still want to know the packaging format for better differential updates. In this way, a special difference comparison and merge tool can be created, which is much better than the binary

Lien0000342014-08-23 UNIX provides two functions DUP and dup2 for copying an existing file descriptor. # Include Int DUP (INT filedes ); Int dup2 (INT filedes, int filedes2 ); Returned value: If successful, a new file descriptor is returned.

Apache hbase is a distributed and open-source storage management tool of hadoop. It is very suitable for random Real-Time I/O operations. We know that hadoop's sequence file is a system for sequential read/write and batch processing. But why can

From: http://blog.csdn.net/scorpio16/article/details/2059623 The second volume of UNIX Network Programming inter-process communication describes MMAP functions. This function has three main purposes:1. Map a common file to the memory, which is

  Chapter 2: I don't know much about it. I think it's not that important.  3.1. Introduction Most file I/o on a UNIX system can be saved med using only five functions:Open,Read,Write,Lseek, AndClose. We then examine the effect of various Buffer

Design and Implementation of multi-thread FTP download   　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 　　　　　　　　　　　　　　　　　　　　　　　　　　　　 　　National Defense University of Science and Technology Microsoft Club 　FTP protocol IntroductionFile Transfer

1. Block I/O2. Non-blocking I/O3. I/O multiplexing (select and poll)4. Signal-driven I/O (sigio)5. asynchronous I/O (posix.1 AIO _ series functions) An input operation in UNIX generally has two different stages:1. Wait for the data to be ready.2.

DUP Function: Copy file descriptorRelated header files: # include Function expression: int DUP (INT filedes );Parameter description: The DUP function parameter filedes indicates the file descriptor of the file to be copied.Return Value Description:

DUP and dup2 are two very useful calls. They are used to copy the descriptor of a file. They are often used to redirect stdin, stdout, and stderr of processes. The original form of these two functions is as follows: # include int DUP (INT oldfd);

Network shared resources are also organized in a tree. Non-leaf nodes are called containers. You need to search for containers until they reach the leaf node. The leaf node is the root path of the shared resources. Shared resources are generally

The/dev/MEM driver provided in the Linux Kernel provides a channel for us to read and write the physical address of the memory. The following describes two methods to read and write physical addresses Using Mem Device Files: one is a device driver

1.1 File objectsThe file is just a sequential sequence of bytes. Data transfers often use byte streams, regardless of whether the byte stream consists of a single or large chunk of data.1.2 Files built-in functions open () and file ()The basic

Original Digest from: http://www.cppblog.com/shifan3/archive/2007/01/05/17325.htmlDetailed linkSome people write C + + (the following is assumed to be C + +) program, unresolved external link or duplicated external simbol error message at a loss

The range protocol is defined in the RFC2616 specification, which gives a rule that allows the client to download only a portion of the full file in a single request, allowing the client to download a file at the same time that the thread is turned

Review efficient file read/write from Apache Kafka0. Overview Kafka said: do not be afraid of file systems. It simply writes common files in sequence, leveraging the Page Cache of the Linux kernel, instead of memory (explicitly, there is no such

Hadoop overviewWhether the business is driving the development of technology, or technology is driving the development of the business, this topic at any time will provoke some controversy.With the rapid development of the Internet and IoT, we have

1) Disable # Pragma warning (Disable: 4311 4312) // the pointer type is forcibly converted and the size does not match completely. Warning c4311: 'Type cast': pointer truncation from 'trinode * const' to 'Long' Warning c4312: 'Type cast': conversion

Http://blog.chinaunix.net/u3/104230/showart_2082499.htmlUse a simple C program to analyze the EXE files under DOS The format of the EXE file under DOS is relatively simple, so let's put the

  V. Section Table) The section table is a structure array next to the PE Header. The number of members of this array is determined by the value of the numberofsections field in the file header (image_file_header) structure. The member structure of

In the previous section, we have a general understanding of the role of each part of the PE file. From this section, we will further explain each part of the PE file, of course, don't forget the two questions I raised in the previous section. 1. Dos