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  2. Swap (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Swap_(computer_programming)

    After swap() is performed, x will contain the value 0 and y will contain 1; their values have been exchanged. This operation may be generalized to other types of values, such as strings and aggregated data types. Comparison sorts use swaps to change the positions of data. In many programming languages the swap function is built-in.

  3. List of Java bytecode instructions - Wikipedia

    en.wikipedia.org/wiki/List_of_Java_bytecode...

    This is a list of the instructions that make up the Java bytecode, an abstract machine language that is ultimately executed by the Java virtual machine. [1] The Java bytecode is generated from languages running on the Java Platform, most notably the Java programming language.

  4. Test-and-set - Wikipedia

    en.wikipedia.org/wiki/Test-and-set

    A lock can be built using an atomic test-and-set [1] instruction as follows: This code assumes that the memory location was initialized to 0 at some point prior to the first test-and-set. The calling process obtains the lock if the old value was 0, otherwise the while-loop spins waiting to acquire the lock. This is called a spinlock. At any ...

  5. Compare-and-swap - Wikipedia

    en.wikipedia.org/wiki/Compare-and-swap

    Many C compilers support using compare-and-swap either with the C11 <stdatomic.h> functions, [8] or some non-standard C extension of that particular C compiler, [9] or by calling a function written directly in assembly language using the compare-and-swap instruction. The following C function shows the basic behavior of a compare-and-swap ...

  6. Java (programming language) - Wikipedia

    en.wikipedia.org/wiki/Java_(programming_language)

    The implementation started when Sun began releasing the Java source code under the GPL. As of Java SE 7, OpenJDK is the official Java reference implementation. The goal of Java is to make all implementations of Java compatible. Historically, Sun's trademark license for usage of the Java brand insists that all implementations be compatible.

  7. XOR swap algorithm - Wikipedia

    en.wikipedia.org/wiki/XOR_swap_algorithm

    Using the XOR swap algorithm to exchange nibbles between variables without the use of temporary storage. In computer programming, the exclusive or swap (sometimes shortened to XOR swap) is an algorithm that uses the exclusive or bitwise operation to swap the values of two variables without using the temporary variable which is normally required.

  8. IJVM - Wikipedia

    en.wikipedia.org/wiki/IJVM

    method name: The string name of a method. When compiled, the address of the method is calculated and put into the constant pool. This operand is then replaced with the 2-byte index (in the constant pool) of the address. constant name: The string name of a constant. Compiled to a 2-byte index. N/A: This instruction takes no operands.

  9. Java bytecode - Wikipedia

    en.wikipedia.org/wiki/Java_bytecode

    Java bytecode is the instruction set of the Java virtual machine (JVM), the language to which Java and other JVM-compatible source code is compiled. [1] Each instruction is represented by a single byte , hence the name bytecode , making it a compact form of data .