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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2022/08/24 09:25:30 UTC

[GitHub] [incubator-nuttx] jihandong opened a new pull request, #6912: drivers/pipes: notify POLLHUP if no readers.

jihandong opened a new pull request, #6912:
URL: https://github.com/apache/incubator-nuttx/pull/6912

   Signed-off-by: jihandong <ji...@xiaomi.com>
   
   ## Summary
   
   ## Impact
   
   ## Testing
   
   


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[GitHub] [incubator-nuttx] xiaoxiang781216 closed pull request #6912: drivers/pipes: notify POLLHUP if no readers.

Posted by GitBox <gi...@apache.org>.
xiaoxiang781216 closed pull request #6912: drivers/pipes: notify POLLHUP if no readers.
URL: https://github.com/apache/incubator-nuttx/pull/6912


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[GitHub] [incubator-nuttx] jihandong commented on pull request #6912: drivers/pipes: notify POLLHUP if no readers.

Posted by GitBox <gi...@apache.org>.
jihandong commented on PR #6912:
URL: https://github.com/apache/incubator-nuttx/pull/6912#issuecomment-1226715317

   > According to https://pubs.opengroup.org/onlinepubs/9699919799/functions/poll.html:
   > 
   > "A device has been disconnected, or a pipe or FIFO has been closed by the last process that had it open for writing. Once set, the hangup state of a FIFO shall persist until some process opens the FIFO for writing or until all read-only file descriptors for the FIFO are closed."
   > 
   > So, is this correct?
   
   Now in PIPE, if the reader is closed without POLHUP generated, the writer cannot know.


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[GitHub] [incubator-nuttx] xiaoxiang781216 commented on pull request #6912: drivers/pipes: notify POLLHUP if no readers.

Posted by GitBox <gi...@apache.org>.
xiaoxiang781216 commented on PR #6912:
URL: https://github.com/apache/incubator-nuttx/pull/6912#issuecomment-1227184434

   @hartmannathan let's confirm how Linux handle this case.


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