[gpsd-commit-watch] [SCM] GPSD branch, master, updated. release-3.11-232-ga2cabfc

[Eric S. Raymond]

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- Log -----------------------------------------------------------------
commit a2cabfcd89d8ac45a60fb35847258567c3450560
Author: Eric S. Raymond <address@hidden>
Date:   Thu Jan 22 16:05:52 2015 -0500

    Introduce an adaptive delay into the main loop to prevent select buzzing.
    
    When select(2) returns too fast with only small amounts of data, the main 
loop
    will buzz and eat power - a significant issue on, e.g. battery-powered RasPi
    devices, where it was first spotted. This code watches read volume and 
delays
    when it sees lots of small bursts.
    
    All regressiion tests pass.  But note: the adaptive-delay logic has to
    suppress delays to arrange this, otherwise we get an all too familiar
    class of spurious test failure.

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Summary of changes:
 NEWS           |    1 +
 gpsd.c         |   59 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 gpsd.h-tail    |   10 +++++++++
 libgpsd_core.c |   22 ++++++++++++++++++++
 4 files changed, 92 insertions(+), 0 deletions(-)


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