objective c - NSRunAlertPanel caused performance issue on multithreading -


occasionally have popup alert window in cocoa code segments. used nsalert directly have runmodal go while found nsrunalertpanel more easier achieve goal. decided switch alert functions nsrunalertpanel. seemed okay @ time。

now i'm adding multithreading. found nsrunalertpanel appears slower nsalert when calling in main thread.

code segments:

firstly create thread:

[nsthread detachnewthreadselector: @selector(tryrunloop:) totarget:self withobject:nil];

then functiontryrunloop in thread call alert window function in main thread:

while(1) [self performselectoronmainthread:@selector(showalert:) withobject:anobject waituntildone:yes];

the function showalert in main thread rest things:

nsrunalertpanel(@"warning:",@"just testing", @"yes", nil, nil);

as time goes response of popup window appears slower , slower.if use nsalert instead of nsrunalertpanel, or did not run popup method in main thread, symptom should disappear.

i found cpu usage different between these 2 methods. nsalert costs low cpu usage while hitting button time.

is able explain these phenomenons?

ps: not allowed put whole original project online i've created simple cocoa project in github simulate symptom , url ,please take @ known issues in readme file @ first.

alright, short answer don't use nsrunalertpanel. family of functions have been discouraged time now, , superseded nsalert. use nsalert instead.

(unfortunately class reference nsrunalertpanel etc. doesn't mention this; i'm trying remember first documented; perhaps release note)


Comments

Post a Comment

Popular posts from this blog

How to mention the localhost in android -

i trying call localhost in android application. unfortunately not possible used several methods emulator local host http://10.0.2.2/android/dbconnection.php and network ip address http://192.168.1.xx/android/dbconnection.php also http://localhost:8080/android/dbconnection.php but nothing connected localhost. purpose refer stackoverflow answers not working i facing same problem when worked on localhost. referred stackoverflow answer got solution create new emulator works fine in new emulator.
Read more

php - Calling a template part from a post -

i include iframe within post in wordpress. located inside content of post, meaning cannot in post template file, otherwise either before or after. i'd add facebook plugin within posts: <div id="socialwrap"><div class="fb-like" data-href="http://onlinearizonahomes.info" data-send="true" data-width="450" data-show-faces="true" data-font="arial"></div></div> i thinking of calling template part within post <?php get_template_part( 'social' ); ?> cannot use php within post without plugin (i'd avoid using plugin this). an alternative using javascript create html in post, seems unnecessary use of javascript. what best way add html within wordpress post? you can use shortcode. add functions.php function cudjex_fbshare( $atts, $content = null ) { global $post; $link = get_permalink($post->id); return '<div id="socialwrap...
Read more

c# - String.format() DateTime With Arabic culture -

check below code snippet, namespace testdateconvertion { class program { static void main(string[] args) { datetime testvalue = new datetime(2013, 12, 15, 15, 33, 44); cultureinfo culture = new cultureinfo("ar-sa"); string stringvalue = string.format(culture, "{0:d} {0:hh:mm:ss}", testvalue); console.writeline(stringvalue); console.readline(); } } } it gives output 22/02/35 15:33:44 i not getting how possible. whats 35 doing in output there that's 13/12/2015 in hijri, 35 means 1435 in hijri, default date format saudi arabia.
Read more