#systemtap on 2016-03-02 — irc logs at freenode.irclog.whitequark.org

2015-11-12 23:18 fche changed the topic of #systemtap to: http://sourceware.org/systemtap; email systemtap@sourceware.org if answers here not timely, conversations may be logged

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14:31 <irker480> systemtap: flu systemtap.git:refs/heads/master * release-2.9-370-g7b5b30a / : PR18431: Function overloading http://tinyurl.com/hwdsaub

14:31 <irker480> systemtap: flu systemtap.git:refs/heads/master * release-2.9-371-gc0d0d62 / NEWS doc/langref.tex elaborate.cxx man/stap.1.in parse.cxx testsuite/systemtap.base/func_overload.exp translate.cxx: PR18431: Add some tests and final fixes http://tinyurl.com/hpwlzq2

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15:04 <irker480> systemtap: flu systemtap.git:refs/heads/master * release-2.9-372-g8382aff / translate.cxx vim/syntax/stp.vim: Function overloading embedded-C macro fix http://tinyurl.com/hnwkth3

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18:25 <drsmith> fche: following up on our conversation from yesterday

18:25 <drsmith> I hacked up the interactive stuff to run to pass 2 after every "add" command

18:25 <drsmith> here's the result

18:26 <drsmith> # stap -vi

18:26 <drsmith> stap> add function foo() { printf("hello\n") }

18:26 <drsmith> WARNING: Eliding unused function 'foo': identifier 'foo' at <input>:1:10

18:26 <drsmith> source: function foo() { printf("hello\n") }

18:26 <drsmith> ^

18:26 <drsmith> semantic error: no probes found

18:26 <drsmith> Pass 2: analysis failed. [man error::pass2]

18:26 <drsmith> stap> add probe begin { foo(); exit() }

18:26 <drsmith> # functions

18:26 <drsmith> exit:unknown ()

18:26 <drsmith> foo:unknown ()

18:26 <drsmith> # probes

18:26 <drsmith> begin /* <- begin */

18:26 <drsmith> stap>

18:26 <drsmith> does that seem useful to you?

18:39 <fche> hm

18:39 <fche> not bad at all

18:39 <fche> so basically -v -p2

18:39 <fche> now if one adds extra pieces, does the inferior stap run on the prior pieces merged together?

18:40 <fche> ie. it is cumulative/

18:47 <drsmith> currently it is cumulative

18:48 <drsmith> it needs to be, since for example that 2nd add command would have gotten an error since foo() wouldn't have been defined

18:48 <fche> yupper

18:48 <fche> that looks pretty good then.

18:48 <fche> what do you think?

18:48 <drsmith> I think it needs a header of some sort - to tell the user what all this output is.

18:50 <drsmith> "script analysis" perhaps?\

18:51 <drsmith> (actually this is just "-p2", not "-v -p2" - the addition of " -v" would have printed the function definition of foo() and the probe contents of begin)

18:51 <fche> you're right on both counts.

18:53 <irker480> systemtap: fche systemtap.git:refs/heads/master * release-2.9-373-g7521710 / testsuite/systemtap.apps/celsius.py: testsuite celsius.py: make python2.6 compatible http://tinyurl.com/z36x7hq

18:56 <fche> drsmith, btw have you tried stap -i with run --monitor mode?

18:56 <fche> those make natural buddies

18:56 <drsmith> no I haven't

18:56 <drsmith> I'll try it out this afternoon

18:56 <fche> thanks

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19:28 <irker480> systemtap: dsmith systemtap.git:refs/heads/master * release-2.9-374-gc9c6452 / interactive.cxx: In interactive mode, run the user's script through -p2 after each change. http://tinyurl.com/jqx7j33

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19:30 <irker480> systemtap: flu systemtap.git:refs/heads/master * release-2.9-375-g2eb3242 / testsuite/systemtap.base/func_overload.exp: Improve test for STAP_NEXT macro http://tinyurl.com/h6oj5as

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19:33 <fche> thanks felix

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