linux get pid

ObjectiveThe last few nights in the process related to the kernel principle, just see the PID this block, it does not seem very complicated, but the introduction of the PID namespace added some data structure, it does not seem so clear, referring to

Before looking at the Linux PCI device initialization, see a bit dizzy, and then hand-over the notes written before, at the same time rest!! ~(@^_^@)~ This piece of article is written before, which refer to some of the blog of the Daniel!!the

In order to get the corresponding host structure (process descriptor) pointer from the given PID value quickly, the kernel adopts the structure of the PID hash list. First, the following questions to understand: 1) Why the PID hash list only defines

To say clear Systemd, you have to start with the Linux operating system started speaking. The startup of the Linux operating system starts with the BIOS, then the boot Loader loads into the kernel and initializes the kernel. The final step in kernel

For the ubuntu14.04 operating system, you can see the structure of the process control block in the/usr/src/linux-headers-4.4.0-31/include/linux/sched.h file, as followsstructtask_struct {volatile LongState/*-1 unrunnable, 0 runnable, >0 stopped*/

Liunx lookup process PID through the process name can be found by pidof [process name]. Conversely, there is no relevant command for the same search process name through PID. In the Linux root directory, there is a VFS (virtual file system) in/proc,

Recent Toss CTSAndroid.security.ctsTestcheckforduplicateoutput, the individual tests are easy to get through, but the joint test is hung

Proc is a virtual file system that is mounted on the/proc directory in a Linux system. Proc has several features, which include the ability for users to access kernel information or use it for troubleshooting, one of the most useful features that

First, prefaceIn fact, two years ago, this site has a document about the process identity, but very simple, and the code is from the 2.6 kernel. With the introduction of the concepts of Linux container, PID namespace and so on, process

Although Docker is a namespace isolation technology to isolate the process between containers, in a host running Docker, the process within the Docker container is in the same namespace (assuming a) as the process running within the host. Although