Linux Process Communication

Reference: http://www.cnblogs.com/xuechao/archive/2011/12/05/2277180.html

 
Table 1. inter-process communication in UNIX
 

name	description	range	purpose
file	read and write data in a typical UNIX file. Any number of processes can interoperate.	Local	share a large dataset
MPs queue	use a dedicated file descriptor to transmit data between two processes. Communication is only performed between the parent process and the child process.	Local	simple data sharing, such as producer and consumer
Named Pipe	exchange data between processes through a dedicated file descriptor. Communication can be performed between any two peer processes on the same host.	Local	producer and consumer or command-control, such as MySQL and its command line query tool
signal	interrupt notification application Program .	Local	unable to transmit data in the signal, so the signal is mainly used for process management
shared memory	Read and Write Data sharing information in the same memory segment.	Local	any type of collaboration is especially suitable for scenarios requiring security
socket	after the special setting process is completed, data is transmitted using normal input/output operations.	local or remote	FTP, ssh, Apache Web server, and other network services

As mentioned above, each technology meets different needs. Assuming that the collaboration between multiple processes is generally quite complex, the advantages and disadvantages of each method are as follows:

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