Visualizing golang.org/x/cmd/callgraph output?

[Matt Joiner]

golang.org/x/cmd/callgraph outputs the callgraph of a program in text. What can I use to get a visual representation of this?

[minux]

On Fri, May 29, 2015 at 12:07 AM, Matt Joiner <anac...@gmail.com> wrote:

golang.org/x/cmd/callgraph outputs the callgraph of a program in text. What can I use to get a visual representation of this?

I assume you meant golang.org/x/tools/cmd/callgraph.

You can use -format graphviz to generate input for the dot

processor in GraphViz.

Example:

callgraph -format graphviz import/path | dot -Tpdf > output.pdf

[adon...@google.com]

Graphviz doesn't scale very well to graphs of more than about 100 nodes.  An alternative visualization is an infinite tree; you can see an example if you run 'godoc -http :8000 -analysis=pointer' and expand the "call graph" widget in the package documentation.  This particular viewer only expands intra-package edges.  I suppose it could be easily extended to view the entire call graph.

There are various graph databases out there, many of which have sophisticated visualizations.  You could try neo4j.

[Matt Joiner]

Thanks very much Alan.

[Damian Gryski]

Or https://github.com/google/cayley of course :)

[matt]

Or as a flame graph?

http://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html

[Matt Joiner]

Both of these look like terrible ways to represent the callgraph. Cayley just seems to put the command-line into the browser for a single use case. Very confusing.

On 30 May 2015 at 22:22, matt <matthew....@gmail.com> wrote:

Or as a flame graph?

http://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html

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[matt]

Matt, I thought you were asking for suggestions. For what purpose do you want to show the call graphs?

[Matt Joiner]

You are right. I wonder what other people are using the callgraphs for. In particular I want to identify any cycles, and determine unique call chains that arrive at a particular function.

On 31 May 2015 at 03:40, matt <matthew....@gmail.com> wrote:

Matt, I thought you were asking for suggestions. For what purpose do you want to show the call graphs?