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local lanes = require "lanes" .configure{ with_timers = false, track_lanes = true}
local SLEEP = function(...)
local k, v = lanes.sleep(...)
assert(k == nil and v == "timeout")
end
print "hello"
local track = function( title_, expected_count_)
print( title_)
local count = 0
local threads = lanes.threads()
for k, v in pairs(threads)
do
print( k, v.name, v.status)
count = count + 1
end
assert(count == expected_count_, "unexpected active lane count " .. count .. " ~= " .. expected_count_)
print( "\n")
return threads
end
local sleeper = function( name_, seconds_)
-- no set_finalizer in main thread
if set_finalizer
then
set_finalizer(function() print("Finalizing '" .. name_ .. "'") end)
end
-- print( "entering '" .. name_ .. "'")
local lanes = require "lanes"
-- no lane_threadname in main thread
if lane_threadname
then
-- print( "lane_threadname('" .. name_ .. "')")
lane_threadname( name_)
end
-- suspend the lane for the specified duration
lanes.sleep(seconds_)
-- print( "exiting '" .. name_ .. "'")
end
-- sleeper( "main", 1)
-- the generator
local g = lanes.gen( "*", sleeper)
-- start a forever-waiting lane (nil timeout)
local forever = g( "forever", 'indefinitely')
-- start a lane that will last 2 seconds
local ephemeral1 = g( "two_seconds", 2)
-- give a bit of time to reach the linda waiting call
SLEEP(0.1)
-- list the known lanes (both should be living lanes)
local threads = track( "============= START", 2)
-- two_seconds forever
assert(threads[1].status == 'waiting' and threads[2].status == 'waiting')
-- wait until ephemeral1 has completed
SLEEP(2.1)
local threads = track( "============= two_seconds dead", 2)
-- two_seconds forever
assert(threads[1].status == 'done' and threads[2].status == 'waiting')
-- start another lane that will last 2 seconds, with the same name
local ephemeral2 = g( "two_seconds", 2)
-- give a bit of time to reach the linda waiting call
SLEEP( 0.1)
-- list the known lanes
-- we should have 3 lanes
local threads = track( "============= ANOTHER", 3)
-- two_seconds #2 two_seconds #1 forever
assert(threads[1].status == 'waiting' and threads[2].status == 'done' and threads[3].status == 'waiting')
-- this will collect all lane handles.
-- since ephemeral1 has completed, it is no longer tracked, but the other 2 should still be
forever = nil
ephemeral1 = nil
ephemeral2 = nil
collectgarbage()
-- list the known lanes
local threads = track( "============= AFTER COLLECTGARBAGE", 2)
-- two_seconds #2 forever
assert(threads[1].status == 'waiting' and threads[2].status == 'waiting')
-- wait a bit more for ephemeral2 to exit, so that we get to have a free-running lane terminate itself before shutdown
SLEEP(3)
print "============= AFTER WAITING"
-- this is printed after Universe shutdown terminates the only remaining lane, 'forever'
lanes.finally(function() print "TEST OK" end)
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