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ex_debug_toolbar
A debug web toolbar for Phoenix projects to display all sorts of information about request
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README
Dbg
Dbg
provides functions for tracing events in the BEAM VM.
Many events, including function calls and return, exception raising, sending
and receiving messages, spawning, exiting, linking, scheduling and garbage
collection can be traced across a cluster of nodes using Dbg
.
Try it out
Clone the repo:
git clone https://github.com/fishcakez/dbg.git
cd dbg
mix compile
iex -S mix
To see the messages sent by the shell process:
Dbg.trace(:send)
Clear all trace flags for current process:
Dbg.clear()
To trace a call, add the :call
trace flag to a process:
Dbg.trace(self(), :call)
Then add the function to traced calls:
Dbg.call(&Map.new/0)
Call the function to see a trace message:
Map.new()
Cancel tracing for Map.new/0
:
Dbg.cancel(&Map.new/0)
And clear the trace flags for self()
:
Dbg.clear(self())
To reset all tracing:
Dbg.reset()
Read The Docs
Dbg
allows much more sophisticated tracing. To get the docs:
mix deps.get
MIX_ENV=docs mix docs
Install As Dependency
As a dependency to a mix.es file:
def application() do
[applications: [:dbg]]
end
def deps() do
[{:dbg, github: "fishcakez/dbg"}]
end
Compatibility With Erlang
Dbg
is a wrapper around OTP's :dbg
module from the :runtime_tools
application. :dbg
functions will work as normal and can be combined
with Dbg
function calls.
License
Copyright 2014 James Fish
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
*Note that all licence references and agreements mentioned in the dbg README section above
are relevant to that project's source code only.