DDC-2613: Proxy generation in multiprocess environment #3282

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admin · 2026-01-22T14:17:13+01:00

admin commented

2026-01-22 14:17:13 +01:00

Originally created by @doctrinebot on GitHub (Aug 15, 2013).

Originally assigned to: @Ocramius on GitHub.

Jira issue originally created by user deatheriam:

{panel}
\Doctrine\ORM\Proxy\ProxyFactory::_generateProxyClass fails to rename temporary proxy files when proxies are generated on demand in multiprocess environment using Process Control extension under Linux (http://www.php.net/manual/en/book.pcntl.php). 'Message: rename(../cache/Proxy/Dlayer/__CG__DlayerEntityInventory.php.520d1708631ed2.21378588,/../cache/Proxy/Dlayer/_CG_DlayerEntityInventory.php): No such file or directory' message is given.
{panel}

It seems that when two parallel processes are trying to generate a proxy for the same entity, the uniqid function does not create unique temporary file names per process.
Also the check should be made at the time of renaming to make sure that the proxy with the same name was not already created in a parallel process.

Originally created by @doctrinebot on GitHub (Aug 15, 2013). Originally assigned to: @Ocramius on GitHub. Jira issue originally created by user deatheriam: {panel} \Doctrine\ORM\Proxy\ProxyFactory::_generateProxyClass fails to rename temporary proxy files when proxies are generated on demand in multiprocess environment using Process Control extension under Linux (http://www.php.net/manual/en/book.pcntl.php). 'Message: rename(../cache/Proxy/Dlayer/__CG__DlayerEntityInventory.php.520d1708631ed2.21378588,/../cache/Proxy/Dlayer/__CG_\_DlayerEntityInventory.php): No such file or directory' message is given. {panel} - It seems that when two parallel processes are trying to generate a proxy for the same entity, the uniqid function does not create unique temporary file names per process. - Also the check should be made at the time of renaming to make sure that the proxy with the same name was not already created in a parallel process.

admin added the Bug label 2026-01-22 14:17:13 +01:00

admin closed this issue

2026-01-22 14:17:13 +01:00

admin commented

2026-01-22 14:17:13 +01:00

@doctrinebot commented on GitHub (Aug 16, 2013):

Comment created by @ocramius:

The "dev" settings are not meant to be used for high concurrency environments at the moment.

@doctrinebot commented on GitHub (Aug 16, 2013): Comment created by @ocramius: The "dev" settings are not meant to be used for high concurrency environments at the moment.

admin commented

2026-01-22 14:17:14 +01:00

@doctrinebot commented on GitHub (Aug 16, 2013):

Comment created by @ocramius:

Duplicate of DDC-2210

@doctrinebot commented on GitHub (Aug 16, 2013): Comment created by @ocramius: Duplicate of [DDC-2210](http://www.doctrine-project.org/jira/browse/DDC-2210)

admin commented

2026-01-22 14:17:14 +01:00

@doctrinebot commented on GitHub (Aug 16, 2013):

Issue was closed with resolution "Duplicate"

@doctrinebot commented on GitHub (Aug 16, 2013): Issue was closed with resolution "Duplicate"

admin commented

2026-01-22 14:17:14 +01:00

@doctrinebot commented on GitHub (Aug 16, 2013):

Comment created by deatheriam:

Thats why you shouldn't generate proxies at runtime. The problem happens on windows, because the atomic rename operation doesn't work as perfectly there as on linux. (http://www.doctrine-project.org/jira/browse/DDC-2210?focusedCommentId=19171&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-19171)

In my case that is observed on a Linux machine. If the rename operation is atomic then why it still happens? As I indicated in the description it's because of the way uniqid function works.
Is there a plan to merge the PR from http://www.doctrine-project.org/jira/browse/DDC-2210 in a near future? The fix in it would eliminate my issue whatsoever.

@doctrinebot commented on GitHub (Aug 16, 2013): Comment created by deatheriam: _Thats why you shouldn't generate proxies at runtime. The problem happens on windows, because the atomic rename operation doesn't work as perfectly there as on linux._ (http://www.doctrine-project.org/jira/browse/[DDC-2210](http://www.doctrine-project.org/jira/browse/DDC-2210)?focusedCommentId=19171&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-19171) - In my case that is observed on a Linux machine. If the rename operation is atomic then why it still happens? As I indicated in the description it's because of the way uniqid function works. - Is there a plan to merge the PR from http://www.doctrine-project.org/jira/browse/[DDC-2210](http://www.doctrine-project.org/jira/browse/DDC-2210) in a near future? The fix in it would eliminate my issue whatsoever.

admin commented

2026-01-22 14:17:15 +01:00

@doctrinebot commented on GitHub (Aug 16, 2013):

Comment created by @ocramius:

[~deatheriam] please continue on the issue that this one is duplicating.

@doctrinebot commented on GitHub (Aug 16, 2013): Comment created by @ocramius: [~deatheriam] please continue on the issue that this one is duplicating.

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Reference: doctrine/archived-orm#3282