THE JR PROGRAMMING LANGUAGE phần 6 pot

... in the subclass is routed through the method associated with the ProcOp to determine whether or not the invocation will be passed on to a Worker object. If the invocation is not rejected by the ... operation a . The value of the first argument of the invocation is bound to parameter m during the execution of the block of code labeled “code for a”. Additional examples o...

Ngày tải lên: 12/08/2014, 13:22

... in their critical sections at the same time. Consider the values taken on by the turn variables in the Bakery2 pro- gram. Are these values bounded or can they become arbitrarily large? If they ... calls to Thread.sleep in the code. (Hint: first rewrite the code in the style of the Race program in Section 4.1.) Gather evidence that the processes in the SoSoCSTurns...

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... 64 Semaphores 6. 13 6. 14 6. 15 In the Barrier class (see the end of Section 6. 3), why does the body contain a process? What would happen if the code for the coordinator process were moved to the ... executes the body of the loop as long as one of the two numbers is not EOS . The if statement compares the two numbers, outputs the smaller, and receives the nex...

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... strips the tours should go from the top to the bottom; in even-numbered strips they should go from the bottom to the top. Once tours have been found for all strips, they are connected together. 17.13 Write ... communicate with each other. The main class and the results class are identical to those in the previous solution. See the previous sections for their code. As in the...

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... JR syntax. The key syntactic items we will use are summarized in the following table. 1.7 Vocabulary and Notation 13 jr jrc jr_ rmic jrrun jrgo jrgox translates and executes a JR program translates a JR ... noted in the Preface, source code for all programming examples and the “given” parts of the programming exercises are available on the JR webpage. Preface JR i...

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... and then immediately requests the fork’s return. To reduce the number of messages exchanged, the request for the fork’s return could be combined with the passing of the fork. In particular, the ... on each virtual machine. The program outputs first the number 5—for the first writex (on the main virtual machine)—and then the number 10—for the second writex (on the...

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... in Jacobi in Section 16. 3 uses the length method. Show how to rewrite the code in the following ways so as not to use the length method. 16. 9 16. 10 16. 11 Change the interface to the terminate ... the other instances of Point in the same row and receives their elements of A. The compute process then sends its value of Brc to other instances of Point in the...

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... of the ball. If the new location is at the top or the bottom of the board, it in effect makes the ball “bounce off” the border. If the new location of the ball is off the board to the left or the ... packages. Exercises 311 (i) (j) clicking the mouse within the board will move the box to the mouse’s location. (If the box is on a different board, the box sho...

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... header that specifies the attributes and modifiers of the class, the name of the class, the base class (if any), and the interfaces implemented by the class. The header is followed by the class body, which ... integral 8 byte 0 255 16 ushort 0 65 ,535 32 uint 0 4,294, 967 ,295 64 ulong 0 18,4 46, 744,073,709,551 ,61 5 Floating point 32 float 1.5 × 10 –45 to 3.4 × 10 38...

Ngày tải lên: 12/08/2014, 23:23

... HelpAttribute to the Widget class and another HelpAttribute to the Display method in the class. The public constructors of an attribute class control the information that must be provided when the attribute ... attribute is requested through reflection, the constructor for the attribute class is invoked with the information provided in the program source, and the resultin...

Ngày tải lên: 12/08/2014, 23:23