Convert to unix fileformat
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William S Fulton
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bd67f57921
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079165abe2
22 changed files with 2479 additions and 2479 deletions
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@ -1,104 +1,104 @@
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-- Operator overloading example
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---- importing ----
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if string.sub(_VERSION,1,7)=='Lua 5.0' then
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-- lua5.0 doesnt have a nice way to do this
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lib=loadlib('example.dll','luaopen_example') or loadlib('example.so','luaopen_example')
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assert(lib)()
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else
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-- lua 5.1 does
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require('example')
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end
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print "ok, lets test Lua's ownership of C++ objects"
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 0)")
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print "\nLets make a couple"
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a=example.Square(10)
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b=example.Circle(1)
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 2)")
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print "\nNote lets use the createX functions"
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c=example.createCircle(5)
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d=example.createSquare(3)
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 4)")
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print "\nWe will run the garbage collector & see if they are till here"
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 4)")
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print "\nLets get rid of them all, collect garbage & see if they are till here"
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a,b,c,d=nil,nil,nil,nil
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 0)")
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print "\nLets start putting stuff into the ShapeOwner"
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print "The ShapeOwner now owns the shapes, but Lua still has pointers to them"
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o=example.ShapeOwner()
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a=example.Square(10)
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b=example.Circle(1)
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o:add(a)
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o:add(b)
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o:add(example.createSquare(5))
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 3)")
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print "\nWe will nil our references,run the garbage collector & see if they are till here"
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print "they should be, as the ShapeOwner owns them"
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a,b=nil,nil
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 3)")
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print "\nWe will access them and check that they are still valid"
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a=o:get(0)
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b=o:get(1)
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print(" Area's are",a:area(),b:area(),o:get(2):area())
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 3)")
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print "\nWe will remove one from the C++ owner & pass its ownership to Lua,"
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print " then check that they are still unchanged"
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a,b=nil,nil
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a=o:remove(0) -- a now owns it
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 3)")
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print "\nDelete the ShapeOwner (this should destroy two shapes),"
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print " but we have one left in Lua"
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o=nil
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 1)")
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print "\nFinal tidy up "
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a=nil
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 0)")
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print "Final test, we will create some Shapes & pass them around like mad"
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print "If there is any memory leak, you will see it in the memory usage"
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io.flush()
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sh={}
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-- make some objects
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for i=0,10 do
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a=example.Circle(i)
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b=example.Square(i)
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sh[a]=true
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sh[b]=true
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end
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o=example.ShapeOwner()
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for i=0,10000 do
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for k,_ in pairs(sh) do
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o:add(k)
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end
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sh={} -- clear it
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while true do
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a=o:remove(0)
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if a==nil then break end
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sh[a]=true
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end
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if i%100==0 then collectgarbage() end
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end
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print "done"
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o,sh=nil,nil
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 0)")
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print "thats all folks!"
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-- Operator overloading example
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---- importing ----
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if string.sub(_VERSION,1,7)=='Lua 5.0' then
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-- lua5.0 doesnt have a nice way to do this
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lib=loadlib('example.dll','luaopen_example') or loadlib('example.so','luaopen_example')
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assert(lib)()
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else
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-- lua 5.1 does
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require('example')
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end
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print "ok, lets test Lua's ownership of C++ objects"
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 0)")
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print "\nLets make a couple"
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a=example.Square(10)
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b=example.Circle(1)
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 2)")
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print "\nNote lets use the createX functions"
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c=example.createCircle(5)
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d=example.createSquare(3)
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 4)")
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print "\nWe will run the garbage collector & see if they are till here"
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 4)")
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print "\nLets get rid of them all, collect garbage & see if they are till here"
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a,b,c,d=nil,nil,nil,nil
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 0)")
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print "\nLets start putting stuff into the ShapeOwner"
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print "The ShapeOwner now owns the shapes, but Lua still has pointers to them"
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o=example.ShapeOwner()
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a=example.Square(10)
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b=example.Circle(1)
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o:add(a)
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o:add(b)
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o:add(example.createSquare(5))
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 3)")
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print "\nWe will nil our references,run the garbage collector & see if they are till here"
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print "they should be, as the ShapeOwner owns them"
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a,b=nil,nil
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 3)")
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print "\nWe will access them and check that they are still valid"
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a=o:get(0)
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b=o:get(1)
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print(" Area's are",a:area(),b:area(),o:get(2):area())
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 3)")
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print "\nWe will remove one from the C++ owner & pass its ownership to Lua,"
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print " then check that they are still unchanged"
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a,b=nil,nil
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a=o:remove(0) -- a now owns it
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 3)")
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print "\nDelete the ShapeOwner (this should destroy two shapes),"
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print " but we have one left in Lua"
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o=nil
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 1)")
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print "\nFinal tidy up "
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a=nil
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 0)")
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print "Final test, we will create some Shapes & pass them around like mad"
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print "If there is any memory leak, you will see it in the memory usage"
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io.flush()
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sh={}
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-- make some objects
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for i=0,10 do
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a=example.Circle(i)
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b=example.Square(i)
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sh[a]=true
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sh[b]=true
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end
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o=example.ShapeOwner()
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for i=0,10000 do
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for k,_ in pairs(sh) do
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o:add(k)
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end
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sh={} -- clear it
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while true do
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a=o:remove(0)
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if a==nil then break end
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sh[a]=true
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end
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if i%100==0 then collectgarbage() end
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end
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print "done"
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o,sh=nil,nil
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collectgarbage()
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print("Currently there are",example.Shape_nshapes,"shapes (there should be 0)")
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print "thats all folks!"
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