Famous Pipeline communication programming

Create 2 processes, create a well-known pipeline in a process, write data to it, and read the data from the well-known pipeline through the B process.

A well-known pipeline, also known as a named pipe, can be used for communication between unrelated processes, similar to files in some features.

Usage: Create a named pipeline through Mkfifo, and then you can manipulate the normal file to manipulate it by using open (), close (), write (), and read ().

1. Create a famous pipe--mkfifo

Header files: #include <sys/types.h>, #include <sys/stat.h>

Prototype: int Mkfifo (const char *pathname,mode_t mode);

Parameter description: Pathname: Create the name of the pipeline corresponding to the real-name file path, Mkfifo () will be based on parameters to establish a special FIFO file, the file must not exist, mode: file permissions.

Return value: Successfully returned 0, failed to return-1, the cause of the error is stored in errno.

2, delete the famous pipe (essentially a file)---unlink

Header files: #include <unistd.h>

Prototype: int unlink (const char *pathname);

Parameter description: pathname: Named pipe file pathname

Return value: Successfully returned 0, failed to return-1, the cause of the error is stored in errno.

Fifo_write.c

Famous Pipeline communication programming