diff options
Diffstat (limited to 'lib/dialyzer/test/race_SUITE_data/src/ets_insert_double2.erl')
-rw-r--r-- | lib/dialyzer/test/race_SUITE_data/src/ets_insert_double2.erl | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/lib/dialyzer/test/race_SUITE_data/src/ets_insert_double2.erl b/lib/dialyzer/test/race_SUITE_data/src/ets_insert_double2.erl new file mode 100644 index 0000000000..fa653e3090 --- /dev/null +++ b/lib/dialyzer/test/race_SUITE_data/src/ets_insert_double2.erl @@ -0,0 +1,28 @@ +%% This tests the presence of possible races due to an ets:lookup/ets:insert +%% combination. It takes into account multiple ets:inserts that might exist. + +-module(ets_insert_double2). +-export([start/2]). + +start(Random, Pass) -> + io:format("Created ~w\n", [ets:new(foo, [named_table, public])]), + ets:insert(foo, {Random, random:uniform(150)}), + io:format("Inserted ~w\n", [{_, N}] = ets:lookup(foo, Random)), + case (N rem 2 == 0) of + true -> + io:format("\nInserted an even integer\n", []), + io:format("\nWill make it odd and generate new password\n", []), + ets:insert(foo, [{Random, N+1}, {Pass, generate_password(Pass, N)}]); + false -> + io:format("\nInserted an odd integer\n", []), + io:format("\nWill make it even and generate new password\n", []), + ets:insert(foo, [{Random, N+1}, {Pass, generate_password(Pass, N)}]) + end, + io:format("Update complete\n", []), + ObjectList = ets:lookup(foo, Pass), + io:format("New password: ~w\n", [ObjectList]), + ets:insert(foo, {Pass, 'empty'}). + +generate_password(Pass, N) -> + [{_, P}] = ets:lookup(foo, Pass), + lists:map(fun (_) -> random:uniform(90)+P+$\s+1 end, lists:seq(1,N)). |