{"id":763,"date":"2018-07-13T09:54:12","date_gmt":"2018-07-13T07:54:12","guid":{"rendered":"https:\/\/www.tests-performance.fr\/?p=763"},"modified":"2018-07-25T13:51:58","modified_gmt":"2018-07-25T11:51:58","slug":"scripting-vugen-creation-et-utilisation-de-dll","status":"publish","type":"post","link":"https:\/\/www.tests-performance.fr\/?p=763","title":{"rendered":"Scripting Vugen 11.52- Cr\u00e9ation et utilisation de DLL"},"content":{"rendered":"

Lorsque nous cr\u00e9ons une librairie .h dans\u00a0Vugen<\/span>, nous aurons rapidement des probl\u00e8mes de performance lors de l’utilisation de celle-ci qui ne nous permettra pas d’atteindre \u00e0 terme l’exigence de transaction par seconde.<\/p>\n

Pour augmenter la rapidit\u00e9 d’ex\u00e9cution de la librairie, la solution est de cr\u00e9er une\u00a0DLL<\/span>.<\/p>\n

Les \u00e9tapes sont les suivantes :<\/p>\n

1 – Cr\u00e9ation d’une DLL avec Visual C++ 2010 Express<\/div>\n
2 – D\u00e9terminer les DLL d\u00e9pendantes \u00a0de la DLL \u00e0 cr\u00e9er avec MS dependency walker<\/div>\n
3 – Cr\u00e9er le script\u00a0Vugen<\/span>\u00a0afin que celui-ci charge correctement la\u00a0DLL<\/span>\u00a0lors d’un test unitaire et en charge<\/div>\n

Etape<\/span>\u00a01 : Configuration de\u00a0Visual<\/span>\u00a0C++ 2010 Express<\/u><\/strong><\/p>\n

T\u00e9l\u00e9charger<\/span>\u00a0et ex\u00e9cuter la version gratuite\u00a0Visual<\/span>\u00a0C++ 2010 Express<\/p>\n

Fichier\/Nouveau\/Projet\u00a0:<\/p>\n

\u00a0<\/p>\n

<\/p>\n

<\/p>\n

<\/p>\n

<\/p>\n

<\/p>\n

Coller le code\u00a0:<\/p>\n

<\/p>\n

Exemple complet de convertion Ebcdic\/Ascii : \u00a0ebdicascii.h<\/a> (Clic droit sur le fichier, enregistrer sous)<\/p>\n

Ajouter les lignes (dont les d\u00e9finition des fonctions utilis\u00e9es)\u00a0en d\u00e9but du code source (la librairie lrun.h est pr\u00e9sente dans l’installation de Vugen\/Analysis)\u00a0:<\/p>\n

\/\/ Librairie Loadrunner<\/p>\n

#include<\/span><\/span>\u00a0<\/span>“C:\\CreatDLL\\lrun.h”<\/span><\/span><\/p>\n

\/\/ Compilation avec Visual C++ 2010 Express<\/span><\/span><\/p>\n

extern<\/span><\/span>\u00a0<\/span>“C”<\/span><\/span>\u00a0<\/span>__declspec<\/span><\/span>(\u00a0<\/span>dllexport<\/span><\/span>\u00a0)\u00a0<\/span>int<\/span><\/span>\u00a0etoa(<\/span>char<\/span><\/span>* src,\u00a0<\/span>char<\/span><\/span>\u00a0*lrvar);<\/span><\/p>\n

extern<\/span><\/span>\u00a0<\/span>“C”<\/span><\/span>\u00a0<\/span>__declspec<\/span><\/span>(\u00a0<\/span>dllexport<\/span><\/span>\u00a0)\u00a0<\/span>int<\/span><\/span>\u00a0atoe(<\/span>char<\/span><\/span>* src,\u00a0<\/span>char<\/span><\/span>\u00a0*lrvar);<\/span><\/p>\n

Cr\u00e9er un r\u00e9pertoire C:\\CreatDLL qui contiendra toutes les librairies (DLL, lib, …). Ce r\u00e9pertoire devra \u00eatre pr\u00e9sent sur l’injecteur.<\/p>\n

Ajouter le chemin vers la lrun50.lib (cette librairie n’est pas pr\u00e9sente dans l’installation de Vugen\/Analysis, mais elle est pr\u00e9sente dans QTP), voici la V11 :\u00a0lrun50.zip<\/a><\/p>\n

<\/p>\n

<\/p>\n

Compiler\u00a0:<\/p>\n

<\/p>\n

<\/p>\n

Copier la Dll dans C:\\CreatDLL.<\/p>\n

Etape 2 :\u00a0D\u00e9terminer les DLL d\u00e9pendantes \u00a0de la DLL \u00e0 cr\u00e9er avec MS dependency walker<\/u><\/strong><\/p>\n

Charger la Dll avec Dependency Walker :<\/p>\n

<\/p>\n

Copier toutes les DLL manquantes dans C:\\CreatDLL\u00a0jusqu’\u00e0 ce qu’il n’y ait plus d’erreurs. (les DLL doivent toutes \u00eatre en 32 bits x86).<\/span><\/p>\n

<\/p>\n

Etape 3 : Cr\u00e9ation d’un script utilisant la DLL<\/u><\/strong><\/p>\n

Dans un script Vugen (Web Html\/Http), ajouter les lignes suivantes (en commen\u00e7ant par les DLL d\u00e9pendantes puis notre dll cr\u00e9\u00e9e).<\/span><\/p>\n

Action<\/b><\/span>()<\/span><\/p>\n

{<\/span><\/p>\n

\u00a0 \u00a0\u00a0lr_load_dll<\/span>(<\/span>“C:\\\\CreatDLL\\\\IEShims.dll”<\/span>);<\/span>
\nlr_load_dll<\/span>(<\/span>“C:\\\\CreatDLL\\\\msvcr100d.dll”<\/span>);<\/span>
\nlr_load_dll<\/span>(<\/span>“C:\\\\CreatDLL\\\\shlwapi.dll”<\/span>);<\/span>
\nlr_load_dll<\/span>(<\/span>“C:\\\\CreatDLL\\\\sysntfy.dll”<\/span>);<\/span>
\nlr_load_dll<\/span>(<\/span>“C:\\\\CreatDLL\\\\ebcdicascii.dll”<\/span>);<\/span><\/p>\n

lr_start_transaction<\/span>(<\/span>“EbcdicToAscii”<\/span>);<\/span>
\netoa<\/b><\/span>(<\/span>lr_eval_string<\/span>(<\/span>“{Ebcdic}”<\/span>),<\/span>\u00a0“Ascii”<\/span>\u00a0);<\/span>
\nlr_end_transaction<\/span>(<\/span>“EbcdicToAscii”<\/span>,<\/span>LR_AUTO<\/b><\/span>);<\/span><\/p>\n

lr_output_message<\/span>(<\/span>“Resultat Ascii: %s”<\/span>,<\/span>\u00a0lr_eval_string<\/span>(<\/span>“{Ascii}”<\/span>)<\/span>\u00a0);<\/span><\/p>\n

lr_start_transaction<\/span>(<\/span>“AsciiToEbcdic”<\/span>);<\/span>
\natoe<\/b><\/span>(<\/span>lr_eval_string<\/span>(<\/span>“{Ascii}”<\/span>),<\/span>\u00a0“Ebcdic”<\/span>);<\/span>
\nlr_end_transaction<\/span>(<\/span>“AsciiToEbcdic”<\/span>,<\/span>LR_AUTO<\/b><\/span>);<\/span><\/p>\n

lr_output_message<\/span>(<\/span>“Resultat Ebcdic: %s”<\/span>,<\/span>\u00a0lr_eval_string<\/span>(<\/span>“{Ebcdic}”<\/span>)<\/span>\u00a0);<\/span><\/p>\n

return<\/span>\u00a00<\/span>;<\/span>
\n}<\/span><\/p>\n

R\u00e9sultat\u00a0:\u00a0<\/span><\/strong><\/u><\/p>\n

<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Lorsque nous cr\u00e9ons une librairie .h dans\u00a0Vugen, nous aurons rapidement des probl\u00e8mes de performance lors de l’utilisation de celle-ci qui ne nous permettra pas d’atteindre \u00e0 terme l’exigence de transaction par seconde. Pour augmenter la rapidit\u00e9 d’ex\u00e9cution de la librairie, la solution est de cr\u00e9er une\u00a0DLL. Les \u00e9tapes sont les suivantes : 1 – Cr\u00e9ation […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[21],"tags":[27],"class_list":["post-763","post","type-post","status-publish","format-standard","hentry","category-vugen","tag-tests-de-performance"],"acf":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.tests-performance.fr\/index.php?rest_route=\/wp\/v2\/posts\/763","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tests-performance.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tests-performance.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tests-performance.fr\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tests-performance.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=763"}],"version-history":[{"count":15,"href":"https:\/\/www.tests-performance.fr\/index.php?rest_route=\/wp\/v2\/posts\/763\/revisions"}],"predecessor-version":[{"id":1176,"href":"https:\/\/www.tests-performance.fr\/index.php?rest_route=\/wp\/v2\/posts\/763\/revisions\/1176"}],"wp:attachment":[{"href":"https:\/\/www.tests-performance.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=763"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tests-performance.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=763"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tests-performance.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=763"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}