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Filesystem: get_pids() "safe": scan /proc only once #1978

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Filesystem: get_pids() "safe": scan /proc only once #1978

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Commits on Sep 19, 2024

  1. Filesystem: get_pids() "safe": scan /proc only once 

    Caution: advanced shell trickery.

With many processes, scanning /proc can take significant time.
Use only one find /proc, feed /proc/**/maps to grep via fifo and xargs,
and send matching symlinks to stdout directly.

On a "busy" system, this cuts the time for get_pids() almost in half.
    @lge
    lge committed Sep 19, 2024
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