From: "ko1 (Koichi Sasada)" <redmine@...>
Date: 2012-11-30T09:03:05+09:00
Subject: [ruby-core:50346] [ruby-trunk - Feature #7473][Open] new events for TracePoint thread_begin/end, b_call/b_end


Issue #7473 has been reported by ko1 (Koichi Sasada).

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Feature #7473: new events for TracePoint thread_begin/end, b_call/b_end
https://bugs.ruby-lang.org/issues/7473

Author: ko1 (Koichi Sasada)
Status: Open
Priority: Normal
Assignee: ko1 (Koichi Sasada)
Category: core
Target version: 2.0.0


On the trunk, there are new 4 events for TracePoint.

	* vm_trace.c: add events
	  * :thread_begin - hook at thread beggining.
	  * :thead_end - hook at thread ending.
	  * :b_call - hook at block enter.
	  * :b_return - hook at block leave.
	  This change slow down block invocation.
	  Please try and give us feedback until 2.0 code freeze.

b_call and b_return are proposed at [Feature #6649].

On my environment, b_call/b_return cause 15% speed-down with 
null block invocation micro-benchmark.

Please try and give us feedback.
It is easy to revert until code freeze.



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