Table of Contents
Revision History
Table of Figures
1. Introduction
2. Overview of Related Work and Literature Survey
2.1. Work Based on Lamport’s happens-before relation
2.2. Work Done by Stefan Savage et al.
3. Work Done in This Project
3.1. Features of JDRD
3.1.1 Configuring JDRD
3.1.2 Running JDRD as Java agent
3.1.3 Modifying a jar file to test with JDRD
3.2. Implementation details of JDRD
3.3. Testing & Interpretation of Results
4. Conclusions and Future Work
Appendices
Appendix A: Requirements Specification Document
1. Introduction
2. Requirements
2.1. Requirement 1. Usage
2.2. Requirement 2. Algorithm
2.3. Requirement 3. Instrumentation
2.3. Requirement 4. Output
3. Use Cases
3.1 Use Case: Configuring JDRD
3.2 Use Case: Run JDRD as an Agent
3.3 Use Case: Modify and test a jar file with JDRD
4.1 References
Appendix B: Design Specification Document
1.1. Purpose
1.2. Scope
1.3. Overview
2. Environment & Application Design
2.1. Environment
2.2. Architecture
2.2.1. Application Architecture
2.2.2 Instrumentation as Java Agent
2.2.2.2. Configuration
2.2.3. Instrumentation by Re-Writing Jar Files
3. Detailed Design:
3.1. Transformation by ASM
3.2. JDRD Adapters & Their Usage
3.2.1 Methods of JDRDMethodAdapter
3.3. Implementation of the Lockset Algorithm
4. Performance
5. References
Revision History
Revision
Date
Explanation
1.0
15.04.2014
Initial report
1.1
22.04.2014
Process of implementation is added.
...
... middle of paper ...
...e).
Method signal access will work as shown in figure 3.3.a
Figure 3.3.a: signalAccess method of the FieldStateData
After signaling access JDRD will check the state and lockset size and issue a warning if size is equal to 0 and state is Shared Modified.
4. Performance
Since JDRD will hold all necessary data about all objects and fields created during execution memory leaks are highly possible. To prevent this all references to the objects will be weak reference in order to not prevent garbage collector to release these memory spaces. More information about weak references can be found at oracle java documents WeakReference page.[5]
5. References
In this paper we describe a tool, called Eraser, that dynamically
detects data races in multi-threaded programs. We
have implemented Eraser for DIGITAL
In the final chapter of The Impossible Knife of Memory, the main character of the book, Hayley begins it off talking about being in a fairytale. If this was her fairytale, this chapter would be her happily ever after. Before this chapter of the book, her life had been disorganized frequently because of her father’s disorder. Her father, Andy Kincain, a war veteran, has PTSD. Also known as Post Traumatic Stress Disorder; this disorder is caused by seeing or experiencing a very intense, and terrifying event. In Andy’s case, the war was what caused his condition.
Definition of memory and it's functions is difficult to illustrate by a single sentence. Consequently we use several metaphors to describe memory implicitly. Our beliefs, perceptions and imagination influence memory. The fact gave rise to memory being described as a reconstructive process, explaining that memory is not an exact record of a particular experience. Instead we bring various components together and fill in the blanks with our predisposed schemas while recalling.
Every application in the real world needs to interact with databases. Java Database Connectivity (JDBC) is the Application Programming Interface (API) used to build Java applications that can interact with relational databases. There are many relational databases such as Oracle, My SQL, DB2, Java DB, Dbase, Sybase, Ingress, Informix, FoxPro and so on. The researcher will be able to use the four types of JDBC drivers to interact with any kind of database in the world.
Authors create logical fallacies all the time without readers knowing it. Tim Kreider's 'The Busy Trap,' is an example that has a few of these fallacies. Kreider shares his opinions regarding how everyone in this world is totally obsessed with unnecessary and ominous tasks. In his article, Kreider’s paints a picture of what society views as 'busy' and even talks about the negative impact it can have on someone’s mental health and well being. Kreider states that in order for people to feel accomplished and productive, they think they must have something going on every hour of the day and week, including weekend. Kreider not only targets adults who have fallen victim to the increase in the busy lifestyle but children as well who have taken
...plying with this communication, the path of the connection is now going back towards the user, opposite of the original intent.
When a relationship is linked between two tables from a primary key to a foreign key, a referential integrity is necessary therefore that we can’t change any data from the foreign key (table) however only can change it in the primary key (table) to avoid any pointless
...e to insecure mode, many applications don’t use this protocol. UDP collectively takes all the packets together through the channel and block the resources completely. Moreover, UDP does not provide reliable data transfers since reliability costs more. For example, Li, Huang, Li and Li (2013, p. 363) explains that after combining real time data in industrial field with organization and management technologies of cloud storage systems, the real time constraint of memory and storage index mechanism can be realized. The jurisdiction management deals with the branch prediction technology; therefore it automatically fetches the data before it needs hence the process speeds up. On the other hand, capacity distribution primarily deals with the cache of CPU, so when it encounters the same query set it automatically fetches the word. As a result, UDP provides data transfer
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Virtual memory is an old concept. Before computers utilized cache, they used virtual memory. Initially, virtual memory was introduced not only to extend primary memory, but also to make such an extension as easy as possible for programmers to use. Memory management is a complex interrelationship between processor hardware and operating system software. For virtual memory to work, a system needs to employ some sort of paging or segmentation scheme, or a combination of the two. Nearly all implementations of virtual memory divide a virtual address space into pages, which are blocks of contiguous virtual memory addresses. On the other hand, some systems use segmentation instead of paging. Segmentation divides virtual address spaces into variable-length segments. Segmentation and paging can be used together by dividing each segment into pages.
Referential Integrity: States that "Foreign Key can be either a NULL value or should be Primary Key value of other relation.
...s the CPU which memory is free and which is in use when it has to decide where to allocate which process.
When electronic devices transfer information to another electronic device, the devices need to know when data flow is beginning and ending. This is done with signals for synchronization.i
The board investigates the situation by holding a hearing and orders to stop the lockout, if it is illegal. The board has the authority to take action against the unlawful lockout. If a collective agreement exists and it is still valid, that results in the lockout violating that agreement. Individuals that are negatively impacted by the lockout may sue or may file a grievance, to get compensation for the
In HDLs, the problem of parallel updates to a shared resource is solved by updating only one “process” and exactly one possible new value for x is specified for every clo...
Two types of memory RAM and ROM hold the instructions and data which are processed by the CPU. The main function of RAM ( Random Access Memory ) is to provide a temporary storage place for data to be processed. Therefore, when the user runs a program, the CPU looks for it on the hard disk and transfers a copy into the RAM. RAM is volatile that is, the information on RAM is lost when the computer is turned off. ROM is the storage place fort he BIOS (Basic Input/Output System ), which controls communication with peripherals. ROM (Read Only Memory ) is non-volatile, permanently containing instructions and routines for the basic operations of the CPU. Another...