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Posted to issues@lucy.apache.org by "Nick Wellnhofer (JIRA)" <ji...@apache.org> on 2013/02/18 22:25:12 UTC

[lucy-issues] [jira] [Updated] (LUCY-254) Creation of Charmonizer temp files sometimes fails on Windows

     [ https://issues.apache.org/jira/browse/LUCY-254?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Nick Wellnhofer updated LUCY-254:
---------------------------------

    Description: 
On Windows, a file won't be deleted until every open handle on it is closed. So if a file is deleted and immediately recreated with the same filename, the creation fails if another process (typically a virus scanner) still has an open handle on it. The solution is to create temporary files with unique names. I propose to add the following function to {{OperatingSystem.c}}:

{noformat}
char*
chaz_OS_temp_filename(const char *prefix, const char *ext);
{noformat}

It should simply add a number to the filename which is incremented on every call to that function.

  was:
On Windows, a file can't be deleted if another process (typically a virus scanner) still has an open handle on it. The solution is to create temporary files with unique names. I propose to add the following function to {{OperatingSystem.c}}:

{noformat}
char*
chaz_OS_temp_filename(const char *prefix, const char *ext);
{noformat}

It should simply add a number to the filename which is incremented on every call to that function.

        Summary: Creation of Charmonizer temp files sometimes fails on Windows  (was: Deletion of Charmonizer temp files sometimes fails on Windows)
    
> Creation of Charmonizer temp files sometimes fails on Windows
> -------------------------------------------------------------
>
>                 Key: LUCY-254
>                 URL: https://issues.apache.org/jira/browse/LUCY-254
>             Project: Lucy
>          Issue Type: Bug
>          Components: Charmonizer
>            Reporter: Nick Wellnhofer
>
> On Windows, a file won't be deleted until every open handle on it is closed. So if a file is deleted and immediately recreated with the same filename, the creation fails if another process (typically a virus scanner) still has an open handle on it. The solution is to create temporary files with unique names. I propose to add the following function to {{OperatingSystem.c}}:
> {noformat}
> char*
> chaz_OS_temp_filename(const char *prefix, const char *ext);
> {noformat}
> It should simply add a number to the filename which is incremented on every call to that function.

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