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The standard way for debuggers to plant interactive breakpoints in a program in RAM (whatever the processor instruction set) is to save the break pointed instruction and replace it by a jump to the breakpoint handling code. After the breakpoint is triggered, the saved instruction is restored in its original place in the code. If the interactive dialogue with the debugger during the breakpoint handling indicates that that the triggered breakpoint is to be removed, execution of the program can be resumed simply by jumping to the instruction that had been break pointed. However, if the dialogue with the debugger indicates that the breakpoint is to remain in place when execution of the program is resumed, implementation is more complicated. Execution of the saved instruction could be emulated, but this is difficult to do, ensuring all side effects such as condition code setting and exception triggering are performed correctly, as well as correctly simulating all addressing modes, such as PC relative. It is much easier simply to execute the break pointed instruction in place, but to plant another breakpoint on a subsequent instruction in the same basic block, usually the immediate successor to the original breakpoint, so that the breakpoint handler can regain control in order to replant the original breakpoint and remove the secondary one. This obviously has some challenges if the successor of the break pointed instruction cannot be statically predicted, for instance if the break pointed instruction is a conditional jump, but a common solution is simply to ban planting breakpoints on such instructions. Identify the critical races that exist with this scheme if the program is executed by multiple threads, possibly multiple cores or multiple processors. Use pseudo-code to illustrate how you would resolve these issues.
Question 1 Discuss on UNIX kernel components 2 Explain process creation and process termination 3 When do a Deadlock occur? What are the Necessary Conditions for Deadlock
New Features of Visual Studio 2008 1. LINQ Support LINQ primarily is the structure of many conventional question employees that allow you to perform with information in a more user
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i want to record in database but how to delete only duplicate field not row in vb 6.0 or ms-access
You must programme an analogue clock and digital stopwatch using the Processing programming language
Write an interactive C program which prompts the user with the following options on the opening menu: 1) Student information 2) Theory counselling batch-scheduling
Introduction A new online system for purchasing carsis being designed and you have been contracted to write a C# console application program that models the proposed functio
Example : Solve the following differential equation. y (3) - 12 y''+48 y' + 64 y = 12 - 32 e -8t + 2 e 4t Solution : We first require the complementary solution
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Implement a two-dimensional table in Prolog. Your program will contain: An insert_entry predicate that takes a table, row, column and an entry and inserts the entry at the g
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