From 547b8f94b2f2814a6ef86e6022c6525b03fcbd2d Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Fri, 17 Oct 2014 07:34:34 +0200
Subject: don't reduce usleep at ms granularity pointlessly

---
 facetracknoir/tracker.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'facetracknoir')

diff --git a/facetracknoir/tracker.cpp b/facetracknoir/tracker.cpp
index 4a80c722..09edd45b 100644
--- a/facetracknoir/tracker.cpp
+++ b/facetracknoir/tracker.cpp
@@ -141,8 +141,10 @@ void Tracker::run() {
             raw_6dof = final_raw;
         }
 
-        const long q = 1000L * std::max(0L, sleep_ms - t.elapsed_ms());
-        usleep(q);
+        double q = sleep_ms * 1000L;
+        q -= t.elapsed();
+        q = std::max(0., q);
+        usleep((long)q);
     }
 
 #if defined(_WIN32)
-- 
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