net garbage collection and memory management

... illustration Memory Physical Memory (RAM) and Swap Space All computers have central memory, or system memory, which has a sequence of instructions (a program) and data related to the program This memory ... controlled directly by the processor in conjunction with the Memory Management Unit (MMU) and is called physical memory, or random access memory (RAM) Many processes are held simultaneously in RAM, ... the system Processes and PIDs Use the ps command to list the processes currently running on the system The output of this command will display the PID number and the command associated with it...

Ngày tải lên: 02/10/2013, 09:20

... operation to reclaim the memory used by an object  The Java virtual machine used garbage collection to ensure that any referenced object will remain in memory, and to free up memory by deallocating ... references in executing code  Garbage is collected without your intervention, but collecting garbage still takes time  Garbage collection is not a guarantee that memory will always be available ...  Public classes and interfaces Public and protected methods Public and protected fields Packages Details on the Doc Comments  Doc comments star with the three characters /** and continue until...

Ngày tải lên: 24/03/2014, 03:20

... alloc, dealloc, and autorelease Reference Counted Memory Management Overview In many cases in Objective-C, we can rephrase "memory management" as "reference counting." Memory management means ... alloc, and instance methods retain, release, and dealloc to handle memory management (Figure 1–5) Just how this is accomplished is shown later in the “Implementing alloc, retain, release, and dealloc” ... 1–4 Memory management with reference counting This figure illustrates the concept of memory management with reference counting In the following sections, we dig deeper into this concept and give...

Ngày tải lên: 24/04/2014, 10:04

Ngày tải lên: 29/03/2015, 22:37

Ngày tải lên: 17/04/2014, 09:15

... all well and dandy until the heap starts to fill up If programs ended without cleaning up after themselves, we would soon run out of available memory In C we have to clean up manually, and forgetting ... resulting in what we call memory leaks In Java, however, an automatic service called the garbage collector runs and cleans up any unreferenced objects using the mark and sweep technique (I’m not ... these event handling classes If you key this code in and run it, you should see the window shown in Figure 17-1 Figure 17-1 Handling our events We’ve managed to put some event handling code on...

Ngày tải lên: 05/10/2013, 10:20

... Module 9: Memory and Resource Management Manual vs Automatic Memory Management Topic Objective To introduce the advantages of automatic memory management in the NET Framework ! Manual Memory Management ... freed memory and thus no dangling references 8 Module 9: Memory and Resource Management Simple Garbage Collection Topic Objective To explain how simple garbage collection works in the NET Framework ... manual memory management C malloc and free functions C++ new and delete operators COM AddRef and Release reference counting methods Automatic Memory Management in the NET Framework The NET Framework...

Ngày tải lên: 17/01/2014, 08:20

... and Role Manager Together Summary Chapter 17: Membership and Role Management in ASP .NET AJAX 3.5 ASP .NET Membership and Role Services Overview ASP .NET Membership ASP .NET Role Management ASP .NET ... ASP .NET 3.5 Security, Membership, and Role Management with C# and VB Professional ASP .NET 3.5 Security, Membership, and Role Management 978-0-470-37930-1 As the first book to address ASP .NET ... Membership and Role Management features in ASP .NET 2.0 and ASP .NET 3.5 The discussion then moves to the steps required to enable existing ASP .NET applications with ASP .NET AJAX 3.5 and then how...

Ngày tải lên: 05/03/2014, 22:20

... and Role Manager Together Summary Chapter 17: Membership and Role Management in ASP .NET AJAX 3.5 ASP .NET Membership and Role Services Overview ASP .NET Membership ASP .NET Role Management ASP .NET ... ASP .NET 3.5 Security, Membership, and Role Management with C# and VB Professional ASP .NET 3.5 Security, Membership, and Role Management 978-0-470-37930-1 As the first book to address ASP .NET ... Membership and Role Management features in ASP .NET 2.0 and ASP .NET 3.5 The discussion then moves to the steps required to enable existing ASP .NET applications with ASP .NET AJAX 3.5 and then how...

Ngày tải lên: 15/03/2014, 02:20

... Professional ASP .NET 2.0 Security, Membership, and Role Management Stefan Schackow Professional ASP .NET 2.0 Security, Membership, and Role Management Stefan Schackow Professional ASP .NET 2.0 Security, ... initial request handling and processing performed both by the operating system layer and the ASP .NET Internet Server Application Programming Interface (ISAPI) filter ❑ How IIS handles static content ... extension and back to IIS6 The net result is that with IIS6 and ASP .NET 2.0, it is possible to have a request for a static file flow through the first portion of the ASP .NET pipeline, and then...

Ngày tải lên: 29/04/2014, 15:11

... reports, and other relevant documents and records to assess and evaluate management s compliance with statewide procurement policies and procedures and other pertinent laws, rules and regulations, and ... services, and construction; exercising general supervision and control over all inventories; and establishing and maintaining programs for the inspection, testing, and acceptance of goods, services, and ... accounts, programs, and performance of all departments, offices, and agencies of the State and its political subdivisions; and according to generally accepted government auditing standards and the Office...

Ngày tải lên: 20/06/2014, 02:20

... procedures and requirements for the following: deliverable review and approval; change control; project plan updates and maintenance; issue tracking and management; document numbering and storage; ... adequate skills and has the necessary training to properly manage the contract Thus, lacking both project management guidance and project managers with project management experience and IT background, ... of Planning and Fractured Management Undermine the State’s Tax Collection Efforts department, an executive committee was never formed By disbanding its Oversight Committee in 2008 and failing...

Ngày tải lên: 20/06/2014, 02:20

... State’s Tax Collection Efforts all without legislative appropriations and approvals and without utilizing the department’s budget We confirmed that both the 2010 Senate Ways and Means and House ... taxation shall be responsible for collection of all delinquent taxes and may select and retain bonded collection agencies, licensed attorneys, accountants, and auditors or other persons for the ... Planning and Fractured Management Undermine the State’s Tax Collection Efforts not a traditional contract The deputy attorney general said that the vendor does not get paid unless it generates new collections...

Ngày tải lên: 20/06/2014, 02:20

... ongoing support and maintenance of its IT systems; and d Better manage its future IT systems by establishing an adequate project and contract management methodology and ensuring project management ... acquisition strategy, and legal and regulatory requirements; and • Be sufficiently detailed to allow for the definition of tactical IT plans The DoTAX management failed to update and implement a meaningful ... mission and goals, defines IT governance as the responsibility of the board of directors and executive management It is an integral part of enterprise governance and consists of the leadership and...

Ngày tải lên: 20/06/2014, 02:20

... the DoTAX Tax Collections Trust Account, the net balance of the “tagged” amounts less amounts to CGI DoTAX prepares its monthly Statement of Tax Operations and submits it to B&F and DAGS The monthly ... deposited into DoTAX Tax Collections Trust Account DoTAX shall prepare a Treasury Deposit Receipt for the deposit of such moneys and submit it to the Department of Budget and Finance (B&F) for processing ... B&F and DAGS The monthly Statement of Tax Operations includes the net balance of Tagged amounts, after payments to CGI Lastly, B&F and DAGS will prepare the appropriate journal vouchers to distribute...

Ngày tải lên: 20/06/2014, 02:20

... machine is famous for its garbage collection facilities In this book I explore several automatic memory management techniques and also provide a couple of concrete garbage collection implementations ... Architecture 194 Java Memory Management 196 Memory Management: The Three-layer Cake 202 References 204 Chapter Manual Memory Management 207 ... This is particularly true with regard to memory management Memory manipulation is so frequent and crucial to performance that designing better memory management subsystems will take center stage...

Ngày tải lên: 06/07/2014, 15:19

... Professional ASP .NET 2.0 Security, Membership, and Role Management Stefan Schackow Professional ASP .NET 2.0 Security, Membership, and Role Management Stefan Schackow Professional ASP .NET 2.0 Security, ... initial request handling and processing performed both by the operating system layer and the ASP .NET Internet Server Application Programming Interface (ISAPI) filter ❑ How IIS handles static content ... extension and back to IIS6 The net result is that with IIS6 and ASP .NET 2.0, it is possible to have a request for a static file flow through the first portion of the ASP .NET pipeline, and then...

Ngày tải lên: 12/08/2014, 23:21

... BeginEventHandler(this.BeginRequest_BeginEventHandler), new EndEventHandler(this.BeginRequest_EndEventHandler) ); } //Implementations of being and end event handlers shown later } Within the same ASP .NET ... System.Web.HttpNotFoundHandler ❑ System.Web.HttpForbiddenHandler ❑ System.Web.HttpNotImplementedHandler ❑ System.Web.HttpMethodNotAllowedHandler ASP .NET only uses three of the handlers in the default handler ... click event handler, you would instead register your asynchronous event handlers in the click event handler Furthermore, you can hook up multiple begin and end event handlers, and ASP .NET will call...

Ngày tải lên: 12/08/2014, 23:21

... Access Driver (*.mdb)};” + “Dbq=D:\\Inetpub\\wwwroot\\TrustLevels\\ASPNetdb_Template.mdb;”); oc.Open(); OdbcCommand ocmd = new OdbcCommand(“select * from aspnet_Applications”, oc); OdbcDataReader ... AspNetHostingPermission, so it is necessary to understand how to grant the AspNetHostingPermission to partial trust non-ASP .NET applications that use these two features 109 Chapter Using AspNetHostingPermission ... results of a demand To mitigate the performance hit of full demands, the Framework also includes the concept of a link demand, also referred to as a LinkDemand The idea behind a LinkDemand is that...

Ngày tải lên: 12/08/2014, 23:21

... following aspnet_regiis command grants read access to the default RSA key container used by protected configuration: aspnet_regiis -pa “NetFrameworkConfigurationKey” “NT AUTHORITY\NETWORK SER ... since ASP .NET 1.0, and ASP .NET 2.0 uses the same security for the ticket However, there have been some new questions over hash security and support for new encryption options in ASP .NET 2.0 How ... Institute of Standards and Technology (NIST) published the details for a new common encryption standard called the Advanced Encryption Standard (AES) AES is the replacement for 3DES, and over time...

Ngày tải lên: 12/08/2014, 23:21