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| author | Karl Palsson <karlp@etactica.com> | 2020-06-30 10:38:44 +0000 |
|---|---|---|
| committer | Petr Štetiar <ynezz@true.cz> | 2020-07-11 11:15:12 +0200 |
| commit | f4e9bf73ac5c0ee6b8f240e2a2100e70ca56d705 (patch) | |
| tree | 875a9e7f0f371e703d70f5412deb039655e12ced | |
| parent | 53b9a2123fc6f0a7fa09ada066cbb0491c72bcf5 (diff) | |
| download | libubox-f4e9bf73ac5c0ee6b8f240e2a2100e70ca56d705.tar.gz | |
examples/lua: attempt to highlight some traps
Ran into some issues with my fd event being garbage collected. As I
never wanted to call :delete, I had seen no reason to keep the returned
object, as my callback and upvalues were still valid.
Signed-off-by: Karl Palsson <karlp@etactica.com>
| -rwxr-xr-x | examples/uloop-example.lua | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/examples/uloop-example.lua b/examples/uloop-example.lua index 9b0684e..511b9ea 100755 --- a/examples/uloop-example.lua +++ b/examples/uloop-example.lua @@ -9,7 +9,7 @@ local udp = socket.udp() udp:settimeout(0) udp:setsockname('*', 8080) --- timer example 1 +-- timer example 1 (will run repeatedly) local timer function t() print("1000 ms timer run"); @@ -18,10 +18,10 @@ end timer = uloop.timer(t) timer:set(1000) --- timer example 2 +-- timer example 2 (will run once) uloop.timer(function() print("2000 ms timer run"); end, 2000) --- timer example 3 +-- timer example 3 (will never run) uloop.timer(function() print("3000 ms timer run"); end, 3000):cancel() -- process @@ -46,6 +46,8 @@ uloop.timer( end, 2000 ) +-- Keep udp_ev reference, events will be gc'd, even if the callback is still referenced +-- .delete will manually untrack. udp_ev = uloop.fd_add(udp, function(ufd, events) local words, msg_or_ip, port_or_nil = ufd:receivefrom() print('Recv UDP packet from '..msg_or_ip..':'..port_or_nil..' : '..words) |