pid

Is there a way to determine if a Linux PID is paused or not?

孤人 提交于 2019-12-05 07:09:08
I have a python script that is using the SIGSTOP and .SIGCONT commands with os.kill to pause or resume a process. Is there a way to determine whether the related PID is in the paused or resumed state? You can find information about a process from its /proc directory ( /proc/<PID> ). Specifically, you can find its run state with this python expression: open(os.path.join('/proc', str(pid), 'stat')).readline().split()[2]=='T' EDIT: This next expression fixes a (presumably rare) bug with the original: re.sub(r'\(.*\)', '()', open(os.path.join('/proc', str(pid), 'stat')).readline()).split()[2]=='T'

How can I determine if a different process id is running using Java or JRuby on Linux?

霸气de小男生 提交于 2019-12-05 05:39:19
问题 I need to see if a given process id is running, and it must work in either Java or JRuby (preferably a Ruby solution). It can be system dependent for Linux (specifically Debian and/or Ubuntu). I already have the PID I am looking for, just need to see if it is currently running. UPDATE: Thanks for all the responses everyone! I appreciate it, however it's not QUITE what I'm looking for... I am hoping for something in a standard Ruby library (or Java, but preferably Ruby)... if no such library

Bash: start remote python application through ssh and get its PID

纵饮孤独 提交于 2019-12-05 05:31:00
I'm creating a little bash script to copy new files from a windows machine to a remote linux centos server (i run this script using the git-shell) then i want to restart the python application thats running in the server to use those new files. The problem is that everytime i run this script i want to end the actual running process before i start it again, so i want to get the pid of the process i start and save it to a file in the remote host so i can read it from there the next time i run the program and kill it. My code by now looks similar to this: echo "Copying code files to server..." #

Is it possible to get the launch time of PID?

邮差的信 提交于 2019-12-05 03:40:41
问题 I have a code that is floating around here for a while (the code is working for me): - (NSArray *) runningProcesses { //CTL_KERN,KERN_PROC,KERN_PROC_ALL int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_ALL ,0}; size_t miblen = 4; size_t size; int st = sysctl(mib, miblen, NULL, &size, NULL, 0); struct kinfo_proc * process = NULL; struct kinfo_proc * newprocess = NULL; do { size += size / 10; newprocess = realloc(process, size); if (!newprocess) { if (process) { free(process); process = NULL; }

查看java资源的占用

眉间皱痕 提交于 2019-12-05 02:11:15
1,使用命令top -p <pid> ,显示你的java进程的内存情况,pid是你的java进程号,比如123 2,按H,获取每个线程的内存情况 3,找到内存和cpu占用最高的线程pid,比如15248 4,执行 printf 0x%x 15248 得到 0x3b90 ,此为线程id的十六进制 5,执行 jstack 123|grep -A 10 3b90,得到线程堆栈信息中3b90这个线程所在行的后面10行 6,查看对应的堆栈信息找出可能存在问题的代码 来源: https://www.cnblogs.com/lijiale/p/11896991.html

Does Windows 7 recycle process id (PID) numbers?

心已入冬 提交于 2019-12-05 01:03:08
I have this little test proggy that tracks PID's as they are created and shut down. I am investigating a problem that my proggy has found and would like to ask you about this in order to have a better idea on what's going on. When a windows process is started, it gets a PID but when the process is shut down, does the PID become retired (like a star basketballer's jersey number) or is it possible for a new, entirely unrelated, process to be created under that released PID? Thanks Yes, process IDs may be recycled by the system. They become available for this as soon as the last handle to the

Mysql connect to server: Access denied for user root@localhost

主宰稳场 提交于 2019-12-05 00:52:33
edit9: Is it a possibility that I'm simply missing a few permissions on folders? I'd really, REALLY appreciate some more suggestions.. edit3: As this post did not get enough replies and it is absolutely vital I get this going as soon as possible I reconstructed my post to display what I think I have deducted so far. Note: logging in normally via numerous different commands simply did not work. My process: Removed mysql running the following commands (did I forget anything?): sudo rm /usr/local/mysql sudo rm -rf /usr/local/mysql* sudo rm -rf /Library/StartupItems/MySQLCOM sudo rm -rf /Library

多任务编程-进程

微笑、不失礼 提交于 2019-12-04 23:42:35
##进程 import os import signal signal.signal(signal.SIGCHLD, signal.SIG_IGN) #signal防止僵尸进程 # 其他方法:1.父进程内pid,status=os.wait() 2.子进程内创建二级子进程(父退出os._exit(0)/sys.exit('退出'),子变孤儿执行) pid=os.fork() if pid==0: print('子进程') elif pid>0: print('父进程') elif pid<0: print('创建子进程失败') >注意 >>* 子进程会复制父进程全部内存空间,从fork下一句开始执行。 >>* 父子进程各自独立运行,运行顺序不一定。 >>* 利用父子进程fork返回值的区别,配合if结构让父子进程执行不同的内容几乎是固定搭配。 >>* 父子进程有各自特有特征比如PID PCB 命令集等。 >>* 父进程fork之前开辟的空间子进程同样拥有,父子进程对各自空间的操作不会相互影响。 from multiprocessing import Process def function(参数): pass p=Process(target=function,args=(参数,)) p.daemon(True) #父进程退出,子进程退出 p.start() p.join()

How can I programmatically get the list of open file descriptors for a given PID on OS X?

最后都变了- 提交于 2019-12-04 23:35:41
问题 Everything I've seen says to use lsof -p , but I'm looking for something that doesn't require a fork/exec. For example on Linux one can simply walk /proc/{pid}/fd . 回答1: You can use proc_pidinfo with the PROC_PIDLISTFDS option to enumerate the files used by a given process. You can then use proc_pidfdinfo on each file in turn with the PROC_PIDFDVNODEPATHINFO option to get its path. 来源: https://stackoverflow.com/questions/15583563/how-can-i-programmatically-get-the-list-of-open-file