332755 - Need way to find out if process spawned with PR_CreateProcess is running

Status: NEW

(NSPR :: NSPR, enhancement)

Description

[Greg Shtilman]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.1
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.1

We needed a way to find out if a process spawned with PR_CreateProcess had finished.   Having such a method would enable you to call PR_WaitProcess only on those processes that you know are already finished, to prevent unnecessary blocking.  Among other things, using this function (in conjunction with PR_WaitProcess/PR_KillProcess), makes it possible to perform a 'timed wait' on a process from a single thread.  

I created a patch that adds 'PRBool PR_IsProcessRunning(PRProcess*)' to the PRProcess interface.  Though the patch is for all platforms, I only compiled/tested it on XP & UNIX.  


Reproducible: Always

Comment 1

[Greg Shtilman]

Attachment: This patch adds a PR_IsProcessRunning call

Comment 2

[Greg Shtilman]

Attachment: Updated patch to add a PR_IsProcessRunning call

Corrects bug in waitpid call in UNIX portion of original patch.

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

The bug assignee is inactive on Bugzilla, so the assignee is being reset.