zend_pass_function/zif_pass

php.internals

Derick Rethans

10 years ago
Hi! I'm trying to make Xdebug up to date with master again, and after fixing the static changes that Dmitry highlighted, I am still baffled by something else. My function traces now have an extra entry for each constructor - even for classes that have no constructor, such as stdClass. Code <?php $tf = xdebug_start_trace(sys_get_temp_dir() . '/'. uniqid('xdt', TRUE)); $a = new StdClass; xdebug_stop_trace(); echo file_get_contents($tf); ?> In PHP 7.1 (master) this generates: => $tf = '/tmp/xdt5724dfa31b3050.51884776.xt' /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:2 0.0017 386376 -> {main}() /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:0 => $a = class stdClass { } /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:4 0.0017 386472 -> xdebug_stop_trace() /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:6 0.0018 386568 Where as in PHP 5.6 and 7.0, it generates: TRACE START [2016-04-30 17:10:19] => $tf = '/tmp/xdt5724e6fb674b31.38510038.xt' /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:2 => $a = class stdClass { } /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:4 0.0006 274008 -> xdebug_stop_trace() /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:6 0.0006 274128 TRACE END [2016-04-30 17:10:19] The master version has the extra {main}, which comes from an additional call to zend_execute_internal. When looking into this, I see that that extra frame is a handle zend_pass_function / zif_pass. How has this changed recently, and more importantly, how can I detect this? I can't do "edata.func == zend_pass_function" as neither zend_pass_function or zif_pass are exported symbols. Any hints on how to handle this? cheers, Derick

Nikita Popov

10 years ago
On Sat, Apr 30, 2016 at 7:12 PM, Derick Rethans <derick@php.net> wrote:
> Hi! > > I'm trying to make Xdebug up to date with master again, and after fixing > the static changes that Dmitry highlighted, I am still baffled by > something else. > > My function traces now have an extra entry for each constructor - even > for classes that have no constructor, such as stdClass. > > Code > > <?php > $tf = xdebug_start_trace(sys_get_temp_dir() . '/'. uniqid('xdt', TRUE)); > > $a = new StdClass; > > xdebug_stop_trace(); > echo file_get_contents($tf); > ?> > > In PHP 7.1 (master) this generates: > > => $tf = '/tmp/xdt5724dfa31b3050.51884776.xt' > /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:2 > 0.0017 386376 -> {main}() > /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:0 > => $a = class stdClass { } > /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:4 > 0.0017 386472 -> xdebug_stop_trace() > /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:6 > 0.0018 386568 > > Where as in PHP 5.6 and 7.0, it generates: > > TRACE START [2016-04-30 17:10:19] > => $tf = '/tmp/xdt5724e6fb674b31.38510038.xt' > /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:2 > => $a = class stdClass { } > /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:4 > 0.0006 274008 -> xdebug_stop_trace() > /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:6 > 0.0006 274128 > TRACE END [2016-04-30 17:10:19] > > The master version has the extra {main}, which comes from an additional > call to zend_execute_internal. > > When looking into this, I see that that extra frame is a handle > zend_pass_function / zif_pass. How has this changed recently, and more > importantly, how can I detect this? I can't do "edata.func == > zend_pass_function" as neither zend_pass_function or zif_pass are > exported symbols. > > Any hints on how to handle this? > > cheers, > Derick
Hey Derick! This change is due to http://www.serverphorums.com/read.php?7,1439618,1439618 / https://github.com/php/php-src/commit/8e5b139732893d2a5f6ba3ae0a0b2b5cf6dba09f . I don't see a good way for you to handle this as things stand now. I think we should export the zend_pass_function symbol. Nikita

Dmitry Stogov

10 years ago
I don't see a big problem exporting zif_pass, if this's really necessary. Thanks. Dmitry. ________________________________ From: Nikita Popov <nikita.ppv@gmail.com> Sent: Saturday, April 30, 2016 8:40:54 PM To: Derick Rethans Cc: Dmitry Stogov; PHP Developers Mailing List Subject: Re: [PHP-DEV] zend_pass_function/zif_pass On Sat, Apr 30, 2016 at 7:12 PM, Derick Rethans <derick@php.net<mailto:derick@php.net>> wrote: Hi! I'm trying to make Xdebug up to date with master again, and after fixing the static changes that Dmitry highlighted, I am still baffled by something else. My function traces now have an extra entry for each constructor - even for classes that have no constructor, such as stdClass. Code <?php $tf = xdebug_start_trace(sys_get_temp_dir() . '/'. uniqid('xdt', TRUE)); $a = new StdClass; xdebug_stop_trace(); echo file_get_contents($tf); ?> In PHP 7.1 (master) this generates: => $tf = '/tmp/xdt5724dfa31b3050.51884776.xt' /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:2 0.0017 386376 -> {main}() /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:0 => $a = class stdClass { } /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:4 0.0017 386472 -> xdebug_stop_trace() /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:6 0.0018 386568 Where as in PHP 5.6 and 7.0, it generates: TRACE START [2016-04-30 17:10:19] => $tf = '/tmp/xdt5724e6fb674b31.38510038.xt' /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:2 => $a = class stdClass { } /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:4 0.0006 274008 -> xdebug_stop_trace() /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:6 0.0006 274128 TRACE END [2016-04-30 17:10:19] The master version has the extra {main}, which comes from an additional call to zend_execute_internal. When looking into this, I see that that extra frame is a handle zend_pass_function / zif_pass. How has this changed recently, and more importantly, how can I detect this? I can't do "edata.func == zend_pass_function" as neither zend_pass_function or zif_pass are exported symbols. Any hints on how to handle this? cheers, Derick Hey Derick! This change is due to http://www.serverphorums.com/read.php?7,1439618,1439618 / https://github.com/php/php-src/commit/8e5b139732893d2a5f6ba3ae0a0b2b5cf6dba09f. I don't see a good way for you to handle this as things stand now. I think we should export the zend_pass_function symbol. Nikita

Joe Watkins

10 years ago
Morning Dmitry, Bob already exported it. http://git.php.net/?p=php-src.git;a=commit;h=f59de7ea368da55f1f21ca82810febb3cdec06f0 Cheers Joe On Wed, May 4, 2016 at 7:28 AM, Dmitry Stogov <dmitry@zend.com> wrote:

Derick Rethans

10 years ago
On Wed, 4 May 2016, Dmitry Stogov wrote:
> I don't see a big problem exporting zif_pass, if this's really necessary.
Bob already committed that, and I've a PR for Xdebug too: https://github.com/xdebug/xdebug/pull/271/commits/c4a539d75f0d2546e9d0cb0dbc06f5a7a31f447e cheers, Derick
> ________________________________ > From: Nikita Popov <nikita.ppv@gmail.com> > Sent: Saturday, April 30, 2016 8:40:54 PM > To: Derick Rethans > Cc: Dmitry Stogov; PHP Developers Mailing List > Subject: Re: [PHP-DEV] zend_pass_function/zif_pass > > On Sat, Apr 30, 2016 at 7:12 PM, Derick Rethans <derick@php.net<mailto:derick@php.net>> wrote: > Hi! > > I'm trying to make Xdebug up to date with master again, and after fixing > the static changes that Dmitry highlighted, I am still baffled by > something else. > > My function traces now have an extra entry for each constructor - even > for classes that have no constructor, such as stdClass. > > Code > > <?php > $tf = xdebug_start_trace(sys_get_temp_dir() . '/'. uniqid('xdt', TRUE)); > > $a = new StdClass; > > xdebug_stop_trace(); > echo file_get_contents($tf); > ?> > > In PHP 7.1 (master) this generates: > > => $tf = '/tmp/xdt5724dfa31b3050.51884776.xt' /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:2 > 0.0017 386376 -> {main}() /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:0 > => $a = class stdClass { } /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:4 > 0.0017 386472 -> xdebug_stop_trace() /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:6 > 0.0018 386568 > > Where as in PHP 5.6 and 7.0, it generates: > > TRACE START [2016-04-30 17:10:19] > => $tf = '/tmp/xdt5724e6fb674b31.38510038.xt' /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:2 > => $a = class stdClass { } /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:4 > 0.0006 274008 -> xdebug_stop_trace() /home/derick/dev/php/derickr-xdebug/tests/assignment-trace11.php:6 > 0.0006 274128 > TRACE END [2016-04-30 17:10:19] > > The master version has the extra {main}, which comes from an additional > call to zend_execute_internal. > > When looking into this, I see that that extra frame is a handle > zend_pass_function / zif_pass. How has this changed recently, and more > importantly, how can I detect this? I can't do "edata.func == > zend_pass_function" as neither zend_pass_function or zif_pass are > exported symbols. > > Any hints on how to handle this? > > cheers, > Derick > > Hey Derick! > > This change is due to http://www.serverphorums.com/read.php?7,1439618,1439618 / https://github.com/php/php-src/commit/8e5b139732893d2a5f6ba3ae0a0b2b5cf6dba09f. > > I don't see a good way for you to handle this as things stand now. I think we should export the zend_pass_function symbol. > > Nikita >
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