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GlenTiki/gist:c51ed25eb3a5a603cb7e

Last active January 26, 2017 00:04
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Hook idea's
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gistfile1.md

What we have: a bunch of global trace events.

Globals:
 LTTNG_NET_SERVER_CONNECTION
 ...
 &&
 DTRACE_NET_SERVER_CONNECTION
 ...

What we need:

Globals:
  NODE_NET_SERVER_CONNECTION
  ...

Where '...' represents the rest of the trace events.

What should happen: With no instrumentation specified at build time, we should have the NODE_TRACE_EVENTS resolve to noops.

When we compile in a tracer system, such as dtrace, or lttng, we should have a back-ended pool which the hooks can hook into.

So when we call NODE_NET_SERVER_CONNECTION it should noop with no tracing enabled, or for example, with Dtrace enabled it should call DTRACE_NET_SERVER_CONNECTION, and then be resolved to the DTRACE hook.

I think the structure for this is fairly simple to implement, we need to pull the generic, replicated code from the node_lttng.cc and node_dtrace.cc files, and make a generic node_tracing.cc file, which the hooks can be compiled into, if enabled. However what we pull and noop will be complex, and I will need guidance with it! :)

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