Update -help to list correct paths searched within PPROF_BINARY_PATH. (#355)
The code was updated in #335 but the doc wasn't updated. Also the doc
didn't include $path which is searched as well, see locateBinaries in
internal/driver/fetch.go.
* Allow -http to accept host:port
* Add serveWebInterface tests.
* Make sure serveWebInterface is serving on the URL.
* Avoid nil pointer dereference
* Simplify the -http flag test.
* Use the right capitalization for hostport.
* Fix the double escaping in regexps.
* Address review comments.
* Added an interactive web interface triggered by passing -http=port
on the command line. The interface is available by visiting
localhost:port in a browser.
Requirements:
* Graphviz must be installed.
* Browser must support Javascript.
* Tested in recent stable versions of chrome and firefox.
Features:
* The entry point is a dot graph display (equivalent to "web" output).
* Nodes in the graph can be selected by clicking.
* A regular expression can also be typed in for selection.
* The current selection (either list of nodes or a regexp)
can be focused, ignored, or hidden.
* Source code or disassembly of the current selection can be displayed.
* Remove unused function.
* Skip graph generation test if graphviz is not installed.
* Added -http port and the various modes of using pprof to the
usage message.
* Web interface now supports "show" option.
* Web interface automatically opens the browser pointed at
the page corresponding to command line arguments.
* Some tweaks for firefox.
* Handle review comments (better usage message, more testing).
* Handled review comments:
1. Capture and display errors like "Focus expression matched no samples".
2. Re-ordered buttons to match other interfaces.
3. Use UI.PrintErr to print error messages.
* Handle javascript code review comments (a bunch of cleanups).
Also added pprof binary to .gitignore.
ahh