exit condition

The exit and exit status codes exit are used to end a script, just like in C. it also returns a value, which is passed to the parent process of the script. The parent process uses this value for further processing. each command returns an exit

Exit and exit Status Codes Exit is used to end a script, just like in C. it also returns a value, which is passed to the parent process of the script. The parent process uses this value for further processing. Each command returns an exit status

Introduction: The related functions are as follows:1 int pthread_cond_init (pthread_cond_t * cond, pthread_condattr_t * cond_attr );2 int pthread_cond_wait (pthread_cond_t * cond, pthread_mutex_t * mutex );3 int pthread_cond_timewait (pthread_cond_t

1. Graceful exit of the process 1.1.kill-9 PID problemsIt is easy and efficient to force a process to be killed by Kill-9 PID on Linux, so many program stop scripts often choose how to use the kill-9 PID.Whether the Kill-9 PID of Linux or the

The. NET class library has helped us close the window. If the window is the main window of the system, close the window and exit the entire application.Program.But in fact, sometimes this is not the case. Close the window, but stop the message loop

In the network programming, is generally multithreaded programming, this arises a problem: data synchronization and sharing. The mutex and condition variables are the two most basic components to allow the data to be shared between threads or

1. There is a problem with the mutex: mutexes are the necessary tools for threaded threads, but they are not omnipotent. For example, what happens if a thread is waiting for a condition in the shared data to appear? It can repeatedly lock and unlock

Hello, C ++ (20). 4.2.2 represents the switch statement selected by the parallel condition: if ...... If ...... If ......,. 4.2.24.2.2 expression of the switch statement selected by the parallel condition: if ...... If ...... If ...... In the real

Linux mutexes, condition variables, and semaphores from http://kongweile.iteye.com/blog/1155490Blog Category: Linux Sem_init: Initializes the semaphore sem_t, the initial value of the semaphore can be specified when initializing, and

linux--linux mutexes, condition variables, and semaphoresfor multithreaded programming, the most important thing to note is the shared data, because there is no way to know which thread will operate on it, or which thread will run first and which