[xdebug-dev] Bug 0000262: Supporting break command with minimum overhead

The following NEW bug has been ADDED.
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http://bugs.xdebug.org/bug_view_page.php?bug_id=0000262
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Reporter: jun
Handler:
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Project: Xdebug
Bug ID: 262
Category: Debug client (console)
Reproducibility: always
Severity: trivial
Priority: normal
Status: new
Operating System:
PHP Version: 5.1.6
Xdebug Version: 2.0.0rc4-dev
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Date Submitted: 2007-05-01 06:57 CEST
Last Modified: 2007-05-01 06:57 CEST
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Summary: Supporting break command with minimum overhead
Description:
Currently Xdebug does not accept break command while
the language engine is running.

I guess that the main reason of it is performance.
Checking in-comming command on every statement execution
is too expensive. May be my guess is wrong.

So, how about checking in-comming (break) command every
100 (or 255, whatever) statements execution.

static unsigned char counter = 0;
if (++counter == 0)
{
    /* check for incomming break/status command */
    ...
}

This way, performance down should not be so bad, and
at least I can break the target execution from debugger
client without restarting Apache ;-)

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Bug History
Date Modified Username Field Change
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2007-05-01 06:57jun New Bug
2007-05-01 06:57jun Bug Monitored: jun
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Received on Tue May 01 2007 - 06:58:01 BST