MemoryAnalyzer

Ruby heap analyzer

Installation

Clone the repo.

Usage

bin/memory_analyzer /path/to/heap.json

This will parse the file and drop you into an IRB session

Parsing: |======================================================| Time: 00:00:03
[1] pry(main)>

From this point you have access to the heap in a variable called $heap upon which you can call helper methods.

.file: The file that was parsed
.nodes: An Array of all memory objects
.by_address: A Hash of all memory objects indexed by address
.by_location: A Hash of all memory objects grouped by location, where
location is "#{file}:#{line}"
.by_parent: A Hash of all memory objects grouped by their parents address.
.roots: A Set of all root objects
.find_by_location(regex): Finds the first object whose location matches the
provided regex
.walk_references(address): Walks the object graph, printing objects in a
tree structure, starting from the given address
.walk_parents(address): Walks the object graph, in reverse, printing objects
in a tree structure, starting from the given address

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.