Just fyi for those of you running Eclipse on the mac.
Running JVM Monitor, Eclipse hung, so I had to kill it. Afterwords Eclipse would hang on launch. After a bit of poking on the web, I found that on the Mac, I could cd to the eclipse directory, eg,
And then run the following, then close and relaunch.
./eclipse -consoleLog -clean -Djava.awt.headless=true
See also: https://bugs.eclipse.org/bugs/show_bug.cgi?id=388170