explicit calls to GC.gc

src/Dataloaders.jl

@@ -76,8 +76,8 @@ Base.maximum(s::TimeSegment) = round(s.anchortime + s.window.durationafter; digi
 extendedmin(s::TimeSegment) = round(s.anchortime - s.window.durationbefore - s.window.marginbefore; digits=4)
 extendedmax(s::TimeSegment) = round(s.anchortime + s.window.durationafter + s.window.marginafter; digits=4)
 
-LarvaBase.times(s::TimeSegment) = [round(t; digits=4) for t in range(minimum(s), maximum(s), length(s))]
-extendedtimes(s::TimeSegment) = [round(t; digits=4) for t in range(extendedmin(s), extendedmax(s), extendedlength(s))]
+LarvaBase.times(s::TimeSegment) = [round(t; digits=4) for t in range(minimum(s), maximum(s); length=length(s))]
+extendedtimes(s::TimeSegment) = [round(t; digits=4) for t in range(extendedmin(s), extendedmax(s); length=extendedlength(s))]
 LarvaBase.times(w::TimeWindow, t) = times(TimeSegment(nothing, t, w, nothing, nothing))
 extendedtimes(w::TimeWindow, t) = extendedtimes(TimeSegment(nothing, t, w, nothing, nothing))
 
@@ -94,7 +94,7 @@ function indicator(window::TimeWindow, segment::TimeSegment)
     @assert window === segment.window
     m = round(Int, window.marginbefore * window.samplerate)
     n = length(window)
-    range(m + 1, m + n)
+    range(m + 1, m + n; step=1)
 end
 
 function segment(file, window, trackid, step, class)
@@ -193,13 +193,13 @@ function countlabels(repository, window; unload=false)
                 counts′[label] = get(counts′, label, 0) + 1
             end
         end
+        unload && unload!(file)
         lock(c)
         try
             counts[file] = counts′
         finally
             unlock(c)
         end
-        unload && unload!(file)
     end
     return counts
 end
@@ -501,6 +501,7 @@ function sample(f, loader::DataLoader, features=:spine; kwargs...)
     Threads.foreach(ch) do (i, file, state)
         segments = sample(file, loader.window, loader.index, features; kwargs...)
         f(i, file, state, filter(!isnothing, segments))
+        empty!(segments) # `unload!` calls `GC.gc`
         unload!(file)
     end
 end

src/Formats.jl

@@ -540,15 +540,20 @@ end
 Unload timeseries data to free memory space.
 """
 function unload!(file::Formats.JSONLabels)
-    empty!(file.timeseries)
-    empty!(file.run)
     for dep in file.dependencies
         unload!(dep)
     end
+    empty!(file.dependencies)
+    empty!(file.timeseries)
+    empty!(file.run)
+    GC.gc()
+    return file
 end
 function unload!(file)
     empty!(file.timeseries)
     empty!(file.run)
+    GC.gc()
+    return file
 end
 
 """