mono/docs/sources/mono-api-counters.html

<h2>Counters</h2>
	
	<p>Counters is a Mono API for flexible statistics collection
	and is used to track different events inside the JIT.

        <p>You would typically register an address with the
        <tt>mono_counters_register</tt> routine and increment the
        counters from your application as you go.   At the end of the
        program you would call mono_counters_dump which will display
        all the registered counters.

	<p>If you need more complicated counter computation, a
        function can be provided instead of an address.  In that case
        the <tt>MONO_COUNTER_CALLBACK</tt> flag must be ored in the
        type request. 

	<p>The types that can be rendered are:
		
<pre>
       MONO_COUNTER_INT
       MONO_COUNTER_UINT
       MONO_COUNTER_WORD
       MONO_COUNTER_LONG
       MONO_COUNTER_ULONG
       MONO_COUNTER_DOUBLE
       MONO_COUNTER_STRING
</pre>
	
	<p>To organize the output, you register also a section where
	the counter will be displayed, or one of the following values
	when you register your counter:

<pre>

       MONO_COUNTER_JIT
       MONO_COUNTER_GC
       MONO_COUNTER_METADATA
       MONO_COUNTER_GENERICS
       MONO_COUNTER_SECURITY
</pre>
	
<h4><a name="api:mono_counters_dump">mono_counters_dump</a></h4>
<h4><a name="api:mono_counters_enable">mono_counters_enable</a></h4>
<h4><a name="api:mono_counters_register">mono_counters_register</a></h4>