Keyword Analysis & Research: wait

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What are waitable and waitpid?

In the remainder of this page, a child whose state has changed and which has not yet been waited upon by one of these system calls is termed waitable . wait () and waitpid () The wait () system call suspends execution of the calling thread until one of its children terminates.

What does it mean to wait for something?

/weɪt/. A1. to allow time to go by, especially while staying in one place without doing very much, until someone comes, until something that you are expecting happens or until you can do something: I waited for her outside while she went in to see the doctor.

What is the system call for waitpid?

On some architectures, there is no waitpid () system call; instead, this interface is implemented via a C library wrapper function that calls wait4 (2) . The raw waitid () system call takes a fifth argument, of type struct rusage *.

Where does wait () and waitpid () store status information?

If wstatus is not NULL, wait () and waitpid () store status information in the int to which it points. This integer can be inspected with the following macros (which take the integer itself as an argument, not a pointer to it, as is done in wait () and waitpid ()!):

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