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f691c15792
... to disable a "method redefined" warning.
20210514T050008Z.fail.html.gz
```
1) Failure:
TestObjSpace#test_objspace_trace [/export/home/chkbuild/chkbuild-gcc/tmp/build/20210514T050008Z/ruby/test/objspace/test_objspace.rb:621]:
<["objspace/trace is enabled"]> expected but was
<["/export/home/chkbuild/chkbuild-gcc/tmp/build/20210514T050008Z/ruby/.ext/common/objspace/trace.rb:29: warning: method redefined; discarding old p",
"objspace/trace is enabled"]>.
```
45 lines
1.2 KiB
Ruby
45 lines
1.2 KiB
Ruby
# This is a simple tool to enable the object allocation tracer.
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# When you have an object of unknown provenance, you can use this
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# to investigate where the object in question is created.
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#
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# = Important notice
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#
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# This is only for debugging purpose. Do not use this in production.
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# Require'ing this file immediately starts tracing the object allocation,
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# which brings a large performance overhead.
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#
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# = Usage
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#
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# 1. Add `require "objspace/trace"` into your code (or add `-robjspace/trace` into the command line)
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# 2. `p obj` will show the allocation site of `obj`
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#
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# Note: This redefines `Kernel#p` method, but not `Object#inspect`.
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#
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# = Examples
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#
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# 1: require "objspace/trace"
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# 2:
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# 3: obj = "str"
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# 4:
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# 5: p obj #=> "str" @ test.rb:3
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require 'objspace.so'
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module Kernel
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remove_method :p
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define_method(:p) do |*objs|
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objs.each do |obj|
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file = ObjectSpace.allocation_sourcefile(obj)
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line = ObjectSpace.allocation_sourceline(obj)
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if file
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puts "#{ obj.inspect } @ #{ file }:#{ line }"
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else
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puts obj.inspect
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end
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end
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end
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end
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ObjectSpace.trace_object_allocations_start
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warn "objspace/trace is enabled"
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