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  2. Java performance - Wikipedia

    en.wikipedia.org/wiki/Java_performance

    A Java virtual machine like HotSpot can also ... extra care of objects shared between threads, ... Chinese universities, use longer time limits for Java ...

  3. Tortuga (software) - Wikipedia

    en.wikipedia.org/wiki/Tortuga_(software)

    This allows the developer to focus on simulation specifics without littering event handler code all over the place. This means that a Tortuga simulation is inherently limited by the number of threads the JVM is able to support. This limit becomes an upper bound on the number of actors, and with the 1.5 Sun-based JRE the limit was about 6,000.

  4. Java memory model - Wikipedia

    en.wikipedia.org/wiki/Java_memory_model

    For the execution of a single thread, the rules are simple. The Java Language Specification requires a Java virtual machine to observe within-thread as-if-serial semantics. The runtime (which, in this case, usually refers to the dynamic compiler, the processor and the memory subsystem) is free to introduce any useful execution optimizations as ...

  5. Java concurrency - Wikipedia

    en.wikipedia.org/wiki/Java_concurrency

    The Java programming language and the Java virtual machine (JVM) is designed to support concurrent programming. All execution takes place in the context of threads. Objects and resources can be accessed by many separate threads. Each thread has its own path of execution, but can potentially access any object in the program.

  6. Comparison of Java virtual machines - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_Java_virtual...

    JVM Status Latest supported Java version Supported class libraries Performance GNU Classpath OpenJDK Other Interpretation AOT JIT; GCJ: No longer maintained or distributed by GNU as of GCC 7 [16]? Yes No Yes Yes No HotSpot, OpenJDK edition Reference implementation. 1.8 No Yes Yes No Yes HotSpot, Oracle JDK edition Reference implementation. 1.8 ...

  7. 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.

  8. Java virtual machine - Wikipedia

    en.wikipedia.org/wiki/Java_virtual_machine

    A Java virtual machine (JVM) is a virtual machine that enables a computer to run Java programs as well as programs written in other languages that are also compiled to Java bytecode. The JVM is detailed by a specification that formally describes what is required in a JVM implementation.

  9. Green thread - Wikipedia

    en.wikipedia.org/wiki/Green_thread

    In Java 1.1, green threads were the only threading model used by the Java virtual machine (JVM), [8] at least on Solaris. As green threads have some limitations compared to native threads, subsequent Java versions dropped them in favor of native threads.