ftok linux

Alibabacloud.com offers a wide variety of articles about ftok linux, easily find your ftok linux information here online.

Semaphore, message queue, and the function ftok for generating the ket_t key value in the shared memory.

In System V, we often use the value of key_t to create or open semaphores, share memory and message queue. This is very important in the IPC environment. For example, the server creates a message queue and waits for the client to send a request. How

Linux Ftok () function--shared memory of multi-process IPC

An ID value must be specified when the system establishes an IPC communication (such as Message Queuing, shared memory). Typically, this ID value is obtained through the Ftok function.The Ftok prototype is as follows:key_t Ftok (char * fname, int id)

Ftok () function Introduction

When the system establishes IPC communication (such as message queue and shared memory), an ID value must be specified.. Generally, this ID value is obtained through the ftok function..The ftok prototype is as follows:Key_t ftok (char * fname, int

Linux ftok () function

An ID value must be specified for the system to establish IPC communication (such as message queue and shared memory. Generally, this ID value is obtained through the ftok function. The ftok prototype is as follows: Key_t ftok (char * fname, int ID)

Linux environment Programming-ftok () function detailed

The system must specify an ID value when it establishes an IPC communication, such as Message Queuing, shared memory. Typically, the ID value is obtained through the Ftok function. The Ftok prototype is as follows: key_t Ftok (char * fname, int id)

Linux Ftok () function

Function prototypeskey_t Ftok (const char *pathname, int proj_id); #pathname: Specifies the file name, the file must be present and can be accessed #proj_id: sub-sequence number, only 8 bits are used (0-255) #当成功执行时, Returns a key_t value that fails

Linux-ftok Function

Why is this function used? This function is mainly used to generate several keys of IPC that do not conflict with each other?An ID value must be specified for the system to establish IPC communication (such as message queue and shared memory.

How function Ftok in Linux produces key values

When we do the Linux interprocess communication development, we often use the Ftok function to produce the unique key value of the text, then how this key value is generated.Function prototype:key_t ftok (const char * fname, int id); Application:key_

Linux ftok () function

The linux ftok () function system must specify an ID value for IPC communication (such as message queue and shared memory. Generally, this id value is obtained through the ftok function. The ftok prototype is as follows: key_t ftok (char * fname,

Shell script implements Ftok function _linux Shell

"The old Sys IPC still has several useful uses." Three types of IPC objects are shared memory, semaphores, and messages. "When you use these objects to IPC, you need to create a Key for each object." While it is theoretically possible to use any of

Total Pages: 14 1 .... 3 4 5 6 7 .... 14 Go to: Go

E-Commerce Solutions

Leverage the same tools powering the Alibaba Ecosystem

Learn more >

Apsara Conference 2019

The Rise of Data Intelligence, September 25th - 27th, Hangzhou, China

Learn more >

Alibaba Cloud Free Trial

Learn and experience the power of Alibaba Cloud with a free trial worth $300-1200 USD

Learn more >

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.