diff options
Diffstat (limited to 'system/doc/efficiency_guide')
| -rw-r--r-- | system/doc/efficiency_guide/binaryhandling.xml | 8 | ||||
| -rw-r--r-- | system/doc/efficiency_guide/commoncaveats.xml | 5 |
2 files changed, 6 insertions, 7 deletions
diff --git a/system/doc/efficiency_guide/binaryhandling.xml b/system/doc/efficiency_guide/binaryhandling.xml index b500329ef9..d92da17390 100644 --- a/system/doc/efficiency_guide/binaryhandling.xml +++ b/system/doc/efficiency_guide/binaryhandling.xml @@ -384,8 +384,8 @@ export ERL_COMPILER_OPTIONS=bin_opt_info]]></code> <p>The warnings look as follows:</p> <code type="erl"><![CDATA[ -./efficiency_guide.erl:60: Warning: NOT OPTIMIZED: sub binary is used or returned -./efficiency_guide.erl:62: Warning: OPTIMIZED: creation of sub binary delayed]]></code> +./efficiency_guide.erl:60: Warning: NOT OPTIMIZED: binary is returned from the function +./efficiency_guide.erl:62: Warning: OPTIMIZED: match context reused]]></code> <p>To make it clearer exactly what code the warnings refer to, the warnings in the following examples are inserted as comments @@ -393,10 +393,10 @@ export ERL_COMPILER_OPTIONS=bin_opt_info]]></code> <code type="erl"><![CDATA[ after_zero(<<0,T/binary>>) -> - %% NOT OPTIMIZED: sub binary is used or returned + %% BINARY CREATED: binary is returned from the function T; after_zero(<<_,T/binary>>) -> - %% OPTIMIZED: creation of sub binary delayed + %% OPTIMIZED: match context reused after_zero(T); after_zero(<<>>) -> <<>>.]]></code> diff --git a/system/doc/efficiency_guide/commoncaveats.xml b/system/doc/efficiency_guide/commoncaveats.xml index 367da09ba3..7b2128d888 100644 --- a/system/doc/efficiency_guide/commoncaveats.xml +++ b/system/doc/efficiency_guide/commoncaveats.xml @@ -36,10 +36,9 @@ <title>Timer Module</title> <p>Creating timers using <seealso - marker="erts:erlang#erlang:send_after/3">erlang:send_after/3</seealso> + marker="erts:erlang#send_after/3">erlang:send_after/3</seealso> and - <seealso marker="erts:erlang#erlang:start_timer/3">erlang:start_timer/3</seealso> -, + <seealso marker="erts:erlang#start_timer/3">erlang:start_timer/3</seealso>, is much more efficient than using the timers provided by the <seealso marker="stdlib:timer">timer</seealso> module in STDLIB. The <c>timer</c> module uses a separate process to manage the timers. |