posix signal handling

First, signal and signal sourceSignal EssenceThe signal is a simulation of the interrupt mechanism at the software level, in principle, a process receives a signal that the processor receives an interrupt request can be said to be the same. The

1. What is interruption? 1. Basic concepts of Interruption Interruptions refer to any unusual or unexpected emergency handling event in the system during the execution of a computer, this allows the CPU to temporarily interrupt the program being

1. Header files#include 2. functionSet the corresponding action of a signal3. Function prototypesvoid (*signal (int signum,void (* handler) (int)))) (int);Decomposition to see:typedef void (*sig_t) (int);sig_t signal (int sig, sig_t func);The first

Linux Multithreading signal Summary (i) 1. In a multi-threaded environment, the resulting signal is passed to the entire process, in general, all threads have the opportunity to receive this signal, the process in the receiving signal in the thread

Http://www.ccw.com.cn/college/soft/b2c/os/htm2012/20120101_957770.shtml A summary of Linux multithreaded signal programming Linux Multithreading signal Summary (i) 1. In a multi-threaded environment, the resulting signal is passed to the entire

Signal ClassificationUnreliable signalThe Linux signaling mechanism is basically inherited from Unix systems. The signaling mechanism in the early Unix system was relatively simple and primitive, and later exposed some problems in practice, and its

**************************************************************************************************The POSIX semaphore semaphore is a primitive that is used to provide synchronization between different threads of different processes or a given

Signal Concept There is no signal numbered 0. Signal generation method: 1. When a user presses a terminal key, the terminal generates a signal. 2. Hardware exceptions generate signals, such as SIGSEGV signals. 3. A process can call the kill function

From: http://hi.baidu.com/phps/blog/item/b064b7b71944cff630add1b4.html   A struct related to Linux CITIC code, struct sigaction, is mainly used when the sigaction signal is installed and the sigqueue signal is sent.The structure is located

POSIX Threading (i): Threading model, Pthread series functions, and simple multithreaded server-side programsOne, the thread has 3 kinds of models, namely N:1 user threading model, 1:1 core threading model and N:M hybrid threading model, POSIX