=nil{log.Fatalf("creating perf event reader: %s",err)}deferrd.Close()gofunc(){// Wait for a signal and close the perf reader,// which will interrupt rd.Read() and make the program exit.<-stopperlog.Println("Received signal, exiting program..")iferr:=rd.Close();err!=nil{log.Fat...
/usr/bin/bashBPIDARRAY=()foriin{0..9};dosleep20 & BPIDARRAY[$i]=$!donesleep3trap"kill `echo${BPIDARRAY[@]}`"EXITwait 其他用法 trap不仅可以捕捉定义在<signal.h>中的信号名或者数值, 还支持以下用法: trap -l: 类似于kill -l, 用于列出当前系统支持的所有信号. trap -p或trap: 列出通过...
可以在启动后台进程之后,使用wait命令等待这些进程完成。wait命令的语法如下: 使用wait命令:wait命令用于等待所有后台进程的完成。可以在启动后台进程之后,使用wait命令等待这些进程完成。wait命令的语法如下: 这样,command1和command2将会以后台进程的方式运行,然后使用wait命令等待它们完成。 使用命令替换和进程控制:可以...
if (n != (unsigned short)-2) /* -2 = sentinel value for having inserted N */ { *** *** 1055,1058 *** --- 1094,1099 --- rl_quoted_insert (int count, int key) { + int r; + /* Let's see...should the callback interface futz with signal handling? */ #if defined...
wait $sleep_pid # 等待后台进程完成 echo "进程已完成,继续执行。" 循环条件 Bash 提供了几种循环结构,包括 for 循环、while 循环和 until 循环。 for 循环 for 循环用于遍历一系列值。 代码语言:txt 复制 #!/bin/bash for i in {1..5} do echo "这是第 $i 次循环" done while 循环 while 循环...
wait_for_partner(inode, &pipe->w_counter);等待写入者介入,此时open操作可能阻塞。 if(signal_pending(current)) goto err_rd; } } break; case 2:写入几乎是读出的镜像操作,所以不再详细注释。 /* * O_WRONLY * POSIX.1 says that O_NONBLOCK means return -1 with ...
wait echo "Command has completed!"In this script, we use trap command to handle SIGINT signal, which is sent when user presses Ctrl+C. We specify 'kill %1' command to terminate background process when signal is received. We then start 'sleep' command in background and wait for it to ...
or job was terminated by a signal, note that value also. */ termination_state = (job != NO_JOB) ?job_exit_status(job)一般通过这个流程来确定返回值。 :process_exit_status(child->status); job_exit_status--->>>raw_job_exit_status (job) ...
Thewhileloopin the example above executes infinitely. The first line of the script contains thetrapcommand and the instructions to wait for theSIGINTsignal, then print the message and exit the script. Thetrapcommand is frequently used to clean up temporary files if the script exits due to inter...
As mentioned previously, foreground process will block access to the shell for the duration of their execution. What if you start a process in the foreground, but then realize that you need access to the terminal? Another signal that you can send is the “SIGTSTP” sign...