.net - NGen and generic collections. How to get rid of Jitting? -


i'm struggling ngen , generic collections. i've ngen'ed assemblies in solution, still somehow jitting occurred every time app executing code:

private dictionary<int, bool> verifyedfunc;   public securityprovider() {     ...     verifyedfunc = new dictionary<int, bool>();     ...        }

mda msg:

managed debugging assistant 'jitcompilationstart' has detected problem in '*.exe'. additional information:  <mda:msg xmlns:mda="http://schemas.microsoft.com/clr/2004/10/mda"> <mda:jitcompilationstartmsg break="true"> <method name="mscorlib!system.collections.generic.dictionary`2::.ctor"/> </mda:jitcompilationstartmsg> </mda:msg>

are there issues ngen , generic collections?

well, isn't problem. made problem using jitcompilationstartmsg debugging assistant. reports jitter got started. went on in previous question mda.

this otherwise entirely normal , way generics work in .net. jitter generates concrete class generic cookie-cutter class definition @ runtime. there 1 instance of concrete class any reference type , 1 each every value type use in code.

this not compatible ngen of course, dictionary<> class in mscorlib.dll , assembly ngen-ed when installed .net on machine. ngen powerless guess front concrete class types going instantiate in code. there countermeasure in mscorlib.dll, pre-defines number of generic types ngen-ed. list<int>, used in application. , in .net framework itself.

you can see these predeclared generic types reference source, commonlyusedgenericinstantiations() method. note how has several precooked versions of dictionary<> in method. not dictionary<int, bool>, unusual. jitter needed create type you.


Comments

Post a Comment

Popular posts from this blog

.htaccess - First slash is removed after domain when entering a webpage in the browser -

sometimes when hit address of webpage in browser, removes first slash after domain. examples: www.mywebsite.com/scripts/script_6.php -> trying load www.mywebsite.comscripts/script_6.php www.mywebsite.com/test.php -> trying load www.mywebsite.comtest.php after entering again, loads page. a .htaccess settings must wrong: rewritebase / errordocument 404 http://www.mywebsite.com/oops.php errordocument 401 /notallowed.php rewriteengine on # turn on rewriting engine #gzip <ifmodule mod_deflate.c> addoutputfilterbytype deflate text/text text/html text/plain text/xml text/css application/x- javascript application/javascript </ifmodule> #end gzip rewritecond %{http_host} ^mywebsite\.com rewriterule ^(.*)$ http://www.mywebsite.com$1 [r=permanent,l] directoryindex index6.php rewriterule ^termsofuse/?$ termsofuse.php [nc,l] # handle requests "adpolicy" rewriterule ^privacy-policy/?$ privacy-policy.php [nc,l] # handle requ...
Read more

Automatically create pages in phpfox -

i have array of information of places , wanna use them create multiple pages in phpfox site. first tried manually insert data in phpfox database (in tables of phpfox_pages , phpfox_pages_text ). the page shown in site when opening it's link, site says: the page looking cannot found. do know other tables should manipulate make work? or know plugin phpfox same? thanks, solved ( @purefan guide): "pages" has user if take @ phpfox_user table, you'll found out how fetch new records on that. there 2 ambiguous fields in table ( password & password_salt ). can use script create values fields: <?php function generaterandomstring() { $length = 164; $characters = '-_0123456789abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz'; $randomstring = ''; ($i = 0; $i < $length; $i++) { $randomstring .= $characters[rand(0, strlen($characters) - 1)]; } return $randomstring; } $ssalt = '';...
Read more

c# - Farseer ContactListener is not working -

i'm using farseer in xna project, have trouble contactlistener. created class contactlistener these 2 error messages , don't know how fix problems. the type or namespace name 'contactlistener' not found (are missing using directive or assembly reference?) the type or namespace name 'contactimpulse' not found (are missing using directive or assembly reference?) what wrong contactlistener class? class mycontactlistener: contactlistener { void begincontact(contact contact) { /* handle begin event */ } void endcontact(contact contact) { /* handle end event */ } void presolve(contact contact, ref manifold oldmanifold) { fixture fixturea = contact.fixturea; fixture fixtureb = contact.fixtureb; if (fixtureb.collisioncategories == category.cat10) { contact.enabled = false; } } void postsolve(contact contact, ref contactimpulse impulse) { /* handle post-solve event */ } }...
Read more