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authorChristopher Faulet <[email protected]>2010-04-06 22:39:14 +0200
committerBjörn Gustavsson <[email protected]>2010-04-09 14:57:15 +0200
commit2cca6506bafedc5ebb720510151a98602133d8e5 (patch)
treeb34db2ee7fc3750a914330a2c692f6b06b7540bd /lib/stdlib/src
parente44595eab24f92fe33d1feea44e422bcb7c53824 (diff)
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Add timer:tc/2 to measure the elapsed time of anonymous functions
Works like timer:tc/3 but for anonymous functions.
Diffstat (limited to 'lib/stdlib/src')
-rw-r--r--lib/stdlib/src/timer.erl13
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/stdlib/src/timer.erl b/lib/stdlib/src/timer.erl
index 36fdb48c75..12bbd45703 100644
--- a/lib/stdlib/src/timer.erl
+++ b/lib/stdlib/src/timer.erl
@@ -22,7 +22,7 @@
send_after/3, send_after/2,
exit_after/3, exit_after/2, kill_after/2, kill_after/1,
apply_interval/4, send_interval/3, send_interval/2,
- cancel/1, sleep/1, tc/3, now_diff/2,
+ cancel/1, sleep/1, tc/2, tc/3, now_diff/2,
seconds/1, minutes/1, hours/1, hms/3]).
-export([start_link/0, start/0,
@@ -98,6 +98,17 @@ sleep(T) ->
after T -> ok
end.
+
+%%
+%% Measure the execution time (in microseconds) for Fun(Args).
+%%
+-spec tc(function(), [_]) -> {time(), term()}.
+tc(F, A) ->
+ Before = erlang:now(),
+ Val = (catch apply(F, A)),
+ After = erlang:now(),
+ {now_diff(After, Before), Val}.
+
%%
%% Measure the execution time (in microseconds) for an MFA.
%%