42 lines
1.7 KiB
C
42 lines
1.7 KiB
C
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// Fig. 17.5: UnsynchronizedBuffer.h
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// UnsynchronizedBuffer incorrectly maintains a shared integer that is
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// accessed by a producer thread and a consumer thread.
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#pragma once
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#include <fmt/format.h>
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#include <iostream>
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#include <string>
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class UnsynchronizedBuffer {
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public:
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// place value into buffer
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void put(int value) {
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std::cout << fmt::format("Producer writes\t{:2d}", value);
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m_buffer = value;
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}
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// return value from buffer
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int get() const {
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std::cout << fmt::format("Consumer reads\t{:2d}", m_buffer);
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return m_buffer;
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}
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private:
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int m_buffer{-1}; // shared by producer and consumer threads
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};
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/************************************************************************
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* (C) Copyright 1992-2022 by Deitel & Associates, Inc. and *
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* Pearson Education, Inc. All Rights Reserved. *
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* *
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* DISCLAIMER: The authors and publisher of this book have used their *
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* best efforts in preparing the book. These efforts include the *
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* development, research, and testing of the theories and programs *
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* to determine their effectiveness. The authors and publisher make *
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* no warranty of any kind, expressed or implied, with regard to these *
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* programs or to the documentation contained in these books. The *
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* authors and publisher shall not be liable in any event for *
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* incidental or consequential damages in connection with, or arising *
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* out of, the furnishing, performance, or use of these programs. *
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***********************************************************************/
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