[xml] Opening same xml file in two threads at a time using xmlReadfile/xmlParseFile

[Bhadraji D <bhadraji d allaboutif com>]

Hi ,

  I am using libxml2 parser API for parsing xml file ,when I am trying to open
    the same  xml file in two threads at a time using xmlReadfile/xmlParseFile,
    randomly I am getting following errors:
    1) I/O warning : failed to load external entity "/tmp/youtube/2.xml"  *and
    Document empty error* ( Actually the file exists there and first thread is
    using it)
    2)/tmp/youtube/2.xml:5: parser error : Specification mandate value for
    attribute fo
    ideo.3gp' type='video/3gpp' medium='video' _expression_='full' duration='14'
    yt:fo
    ^
    /tmp/youtube/2.xml:5: parser error : attributes construct error
    ideo.3gp' type='video/3gpp' medium='video' _expression_='full' duration='14'
    yt:fo
    ^
    /tmp/youtube/2.xml:5: parser error : Couldn't find end of Start Tag content
    line 5
    ideo.3gp' type='video/3gpp' medium='video' _expression_='full' duration='14'

- Ignored:
    yt:fo
    ^
    /tmp/youtube/2.xml:5: parser error : Premature end of data in tag group line
    5
    ideo.3gp' type='video/3gpp' medium='video' _expression_='full' duration='14'
    yt:fo
    ^
    /tmp/youtube/2.xml:5: parser error : Premature end of data in tag entry line
    1
    ideo.3gp' type='video/3gpp' medium='video' _expression_='full' duration='14'
    yt:fo
    ^
    /tmp/youtube/2.xml:5: parser error : Premature end of data in tag feed line
    1
    ideo.3gp' type='video/3gpp' medium='video' _expression_='full' duration='14'
    yt:fo


    Here I can use mutex to avoid this but it has to wait for lock . I want to
    open the xml file and parse simultaneouly.
    How can I handle this ,suggest me.

    regards,
    ~bhadra