multiple-instances | 易学教程

c++, multiple instances of a dll, singleton

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问题 I have got a DLL in which a singleton is defined. I have got an app which can load multiple instances of this DLL. The DLL needs a singleton instance per DLL instance, otherwise it will crash. I observed that there was only one singleton instance for multiple DLL instances. Why? How can I resolved it (if possible, without refactoring the singleton into something else)? Thanks for any help. 回答1: You mentioned that you have multiple instances inside your app , which implies that they all live

deploy the same application multiple times on tomcat

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问题 I want to deploy the same applications multiple times on the same tomcat instance for different "customers". Since im not really experienced with tomcat and other application servers i dont have a point to start. When i simply generate war files like app1.war and app2.war (based on the same code) it doesnt work, bc the war files are named diferent but the project is still called the same, so tomcat is confused i think. So i really dont know where to start. Another starting point is to have

Force AngularJS to use specific version of jQuery while using multiple versions of jQuery at once

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问题 I inherited the project where several version of jQuery are loaded into the page in noConflict mode. Application is huge, tests are missing and it seems every former devloper did not have "cohones" big enough to remove previous library. So the result is that $ refers to jquery version 1.4.2. Is there any way/trick to tell angular wich version of jQuery should be used? Something like angular.jq = j182 I know I can do it like <script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min

Max length of SQL Server instance name?

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问题 I need to know the maximum character length for the name of an instance of a SQL Server for the following versions (if there is a difference between them.) SQL Server 2000 SQL Server 2005 SQL Server 2008 SQL Server 2008 R2 (I am working on an application that will communicate with SQL Server via the DMO/SMO APIs and need to validate user input.) After much Googling and BOL searching I have not been able to find a definitive answer. I have found forum questions and responses (on other, lesser

How to limit instances of a C# program in Citrix to 1-per-user

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问题 I have a Windows Forms application with C# code as shown below (targeting .NET framework 4). On my developer workstation, this code works to prevent me from launching multiple instances of the program. However, QA has a Citrix test environment where each user is still able to launch multiple instances. What can be done to prevent a given user from running multiple instances in Citrix? [STAThread] static void Main(string[] args) { bool isFirstInstance; Mutex m = new Mutex(true, "[App name goes

Many instances of a class

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问题 I am trying to write a life simulation in python with a variety of animals. It is impossible to name each instance of the classes I am going to use because I have no way of knowing how many there will be. So, my question: How can I automatically give a name to an object? I was thinking of creating a "Herd" class which could be all the animals of that type alive at the same time... 回答1: Hm, well you normally just stuff all those instances in a list and then iterate over that list if you want

heroku multiple dyno socket.io

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问题 I am developing a node.js application with Socket.io and deploying same on Heroku Dyno. Socket.io is using RedisStore with its PUB/SUB. Socket.io client works perfectly fine with one dyno in heroku. But when I increase the number of dyno to more than one (say two), socket io client request does not work. Please let me know if any specific configuration on client side is needed while setting up heroku for multiple web dyno having socket.io support. 回答1: Sorry, but heroku doesn't support sticky

Android: two instances of Text-to-Speech work very slowly

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问题 I need to implement feature in my Andorind app which allows to play two different synthesized languages in current Acitivity - for instance having two buttons Say English and Say French I've tried to do it in two following ways but both of them works ineffectively because there is long delay before sound plays: first approach: create single instance of TTS and change language by setLocale method depending on what language has to be played. Unfortunately switching between languages by

SQL Server: Select from two tables and insert into one

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问题 I have a stored procedure with two table variables (@temp and @temp2). How can I select the values from both temp tables (Both table variables contain one row) and insert them all in one table ? I tried the following but this didn't work and I got the error that the number of SELECT and INSERT statements does not match. DECLARE @temp AS TABLE ( colA datetime, colB nvarchar(1000), colC varchar(50) ) DECLARE @temp2 AS TABLE ( colD int ) ... INSERT INTO MyTable ( col1, col2, col3, col4 ) SELECT

Running Multiple Instances of Tomcat on same port

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I need to run multiple instances of tomcat6 under different directory names on the same port. I will install tomcat6 twice for two different projects. But how to configure both the instances to run on the same port? Kurt Du Bois You could realise this using an apache webserver that is directing the requests based on the application using mod_jk or mod_proxy. (and get an explanation on both extensions) To choose which apache extension to use: apache to tomcat: mod_jk vs mod_proxy victorpacheco3107 Yes, you can. In server.xml replace: <Host name="localhost" appBase="webapps" unpackWARs="true"