TracePoint: Support .trace #4800
Description
This issue records the fact that TracePoint.trace is not supported. It does a combined instantiation and enabling of a TracePoint instance.
The JRuby extension TracePoint.java seems not to implement .trace and .stat
Workaround: JRuby's TracePoint has .new. and #enable. Use TracePoint.new and then #enable the resulting TracePoint instance.
Environment
$ jruby -v
jruby 9.1.13.0 (2.3.3) 2017-09-06 8e1c115 Java HotSpot(TM) 64-Bit Server VM 25.111-b14 on 1.8.0_111-b14 +jit [darwin-x86_64]
$ uname -a
Darwin gungnir.lan 16.7.0 Darwin Kernel Version 16.7.0: Thu Jun 15 17:36:27 PDT 2017; root:xnu-3789.70.16~2/RELEASE_X86_64 x86_64
Expected Behavior
- I expect that
TracePoint.traceinstantiates and enables a TracePoint.
Example script to run:
TracePoint.trace(:call) { puts 'Hi' }Example execution:
irb(main):001:0> TracePoint.trace(:call) { puts 'Hi' }
Hi
Hi
Hi
Hi
Hi
Hi
Hi
=> #<TracePoint:enabled>
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Hi
Actual Behavior
A NoMethodError is raised.
irb(main):002:0> TracePoint.trace(:call) { puts 'Hi' }
NoMethodError: undefined method `trace' for TracePoint:Class
Did you mean? trace_var
trap
from org/jruby/RubyBasicObject.java:1657:in `method_missing'
from (irb):2:in `<eval>'
from org/jruby/RubyKernel.java:994:in `eval'
from org/jruby/RubyKernel.java:1292:in `loop'
from org/jruby/RubyKernel.java:1114:in `catch'
from org/jruby/RubyKernel.java:1114:in `catch'
from /Users/olle/.rubies/jruby-9.1.13.0/bin/irb:13:in `<main>'