ftok linux

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)

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

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)

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)

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

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_

"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

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

# Include # Include As follows: Key_t ftok (char * fname, int ID) Fname is the specified file name (an existing file name). The current directory is generally used, for example: Key_t key; Key = ftok (".", 1); in this way, the fname is set

Ftok minor issues-general Linux technology-Linux technology and application information. The following is a detailed description. # Include # Include # Include # Include Int main () {Key_t key; Char I; For (