[mythtv-commits] [MythTV/mythtv] 061af3: Use close_range() to close large numbers of files ...

[David Engel]

  Branch: refs/heads/fixes/34
  Home:   https://github.com/MythTV/mythtv
  Commit: 061af3b0aa9d44714cc9492b93453cc038806585
      https://github.com/MythTV/mythtv/commit/061af3b0aa9d44714cc9492b93453cc038806585
  Author: David Engel <dengel at mythtv.org>
  Date:   2024-06-30 (Sun, 30 Jun 2024)

  Changed paths:
    M mythtv/configure
    M mythtv/libs/libmythbase/mythsystemunix.cpp
    M mythtv/libs/libmythtv/recorders/ExternalStreamHandler.cpp
    M mythtv/programs/mythbackend/mythbackend.cpp
    M mythtv/programs/mythpreviewgen/mythpreviewgen.cpp

  Log Message:
  -----------
  Use close_range() to close large numbers of files when available.

close_range() is a newish, Linux and FreeBSD system call to close a
large range of file descriptors as is commonly done by the child
process after a fork.  Linux now supports extremely large limits and
the traditional, brute force way of closing file descriptors can incur
a several minute delay in those situations.  This change checks for
and uses close_range() when it is available.

(cherry picked from commit 8dbc67e783c0c0443a5711b4b595d2ca8c2f96cc)



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