[#45426] [ruby-trunk - Feature #6546][Open] Net::HTTP to check for HTTP_PROXY environment setting. — "dekz (Jacob Evans)" <dekzter@...>

14 messages 2012/06/04

[#45431] [ruby-trunk - Bug #6548][Open] Rake doesn't ignore arguments after -- — "rosenfeld (Rodrigo Rosenfeld Rosas)" <rr.rosas@...>

12 messages 2012/06/05

[#45474] [ANN] Request for "slide-show" of your feature proposal — Yusuke Endoh <mame@...>

(Japanese later; 日本語が後にあります)

18 messages 2012/06/07

[#45563] [ruby-trunk - Bug #6573][Open] Webrick test failures — "bkabrda (Bohuslav Kabrda)" <bkabrda@...>

19 messages 2012/06/11

[#45567] [ruby-trunk - Bug #6575][Open] Thread#kill sets rb_errinfo() to Fixnum 8 after rb_protect(function, data, &error_tag) — ibc (Iñaki Baz Castillo) <ibc@...>

9 messages 2012/06/11

[#45647] [ruby-trunk - Bug #6592][Open] test_call_double(DL::TestDL) fails on ARM HardFP — "vo.x (Vit Ondruch)" <v.ondruch@...>

15 messages 2012/06/14

[#45657] [ruby-trunk - Feature #6594][Open] Integrated Functor — "trans (Thomas Sawyer)" <transfire@...>

20 messages 2012/06/15

[#45664] [ruby-trunk - Bug #6596][Open] New method for Arrays : Array#index — "robin850 (Robin Dupret)" <robin.dupret@...>

20 messages 2012/06/15

[#45694] [ruby-trunk - Feature #6602][Open] Tail call optimization: enable by default? — "ko1 (Koichi Sasada)" <redmine@...>

12 messages 2012/06/18

[#45715] [ruby-trunk - Feature #6609][Open] Toplevel as self extended module — "trans (Thomas Sawyer)" <transfire@...>

17 messages 2012/06/19

[#45732] [ruby-trunk - Bug #6614][Open] GC doesn't collect objects bound to (collectable) proc — "rogerdpack (Roger Pack)" <rogerpack2005@...>

9 messages 2012/06/20

[#45733] [ruby-trunk - Feature #6615][Open] Release GVL in zlib when calling inflate() or deflate() — "drbrain (Eric Hodel)" <[email protected]>

12 messages 2012/06/21

[#45735] [ruby-trunk - Bug #6616][Open] MinGW: cannot build extensions or run tests due changes in exec_arg? — "luislavena (Luis Lavena)" <luislavena@...>

9 messages 2012/06/21

[#45798] [ruby-trunk - Bug #6634][Open] Deadlock with join and ConditionVariable — "meh. (meh. I don't care)" <meh@...>

20 messages 2012/06/23

[#45805] [ruby-trunk - Feature #6636][Open] Enumerable#size — "marcandre (Marc-Andre Lafortune)" <ruby-core@...>

15 messages 2012/06/23

[#45864] [ruby-trunk - Bug #6647][Open] Exceptions raised in threads should be logged — "headius (Charles Nutter)" <headius@...>

71 messages 2012/06/25

[#45902] [ruby-trunk - Bug #6653][Open] 1.9.2/1.9.3 exhibit SEGV with many threads+tcp connections — "erikh (Erik Hollensbe)" <erik@...>

11 messages 2012/06/26

[#45960] [ruby-trunk - Feature #6669][Open] A method like Hash#map but returns hash — "yhara (Yutaka HARA)" <redmine@...>

18 messages 2012/06/29

[#45963] [ruby-trunk - Feature #6670][Open] str.chars.last should be possible — "yhara (Yutaka HARA)" <redmine@...>

36 messages 2012/06/29

[#46021] [ruby-trunk - Feature #6679][Open] Default Ruby source file encoding to utf-8 — "claytrump (Clay Trump)" <clay.trump@...>

21 messages 2012/06/30

[ruby-core:45878] [ruby-trunk - Feature #6649][Open] Add new set_trace_func events "b-call", "b-return"

From: "ko1 (Koichi Sasada)" <redmine@...>
Date: 2012-06-26 07:10:00 UTC
List: ruby-core #45878
Issue #6649 has been reported by ko1 (Koichi Sasada).

----------------------------------------
Feature #6649: Add new set_trace_func events "b-call", "b-return"
https://bugs.ruby-lang.org/issues/6649

Author: ko1 (Koichi Sasada)
Status: Open
Priority: Normal
Assignee: matz (Yukihiro Matsumoto)
Category: 
Target version: 


=begin
= Abstract

Add new events "b-call", "b-return" for set_trace_func().
When block is invoked, then "b-call" is called.
When block is finished, then "b-return" is called.

= Background

set_trace_func() has several events:

* "line"
* "call", "return"
* "c-call", "c-return"
* "class", "end"
* "raise"

With above events, we can trace execution.  However, we can't trace block invocation because there are no events related to block invocation and return from block.

For example, performance profiler using set_trace_func() has problem in such case:

  def m1
    yield
  end
  
  def m2
    m1 do
      # long time process
    end
  end

A method `m1' doesn't consume time, but `m2' consume long time (within block).
However, the profiler detects that the method `m1' consumes long time.


= Proposal

Add "b-call" and "b-return" events for set_trace_func.  "b-call" is for block invocation.  "b-return" is for returning from block.

Parameters:

* event: "b-call" or "b-return"
* file: filename of block
* line: start/end line number of block
* id: block owner method id
* binding: binding of block
* klass: block owner class

= Concerns

* This proposal breaks 100% compatibility.  It seems problem (*1).
* It will make some runtime overhead (slow down).
* parameters id and klass is appropriate?

*1: Making an alternative API which can replace set_trace_func() (correctly speaking, set_trace_func() can be implemented with this new API) is another proposal.

  # as usual, the method name is temporary name
  set_trace_func2(lamda{|info|
    info.event
    ...
  }

=end



-- 
http://bugs.ruby-lang.org/

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