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# core.thread.threadgroup

The osthread module provides types used in threads modules.
License:
Distributed under the Boost Software License 1.0. (See accompanying file LICENSE)
Authors:
Sean Kelly, Walter Bright, Alex Rønne Petersen, Martin Nowak

Source core/thread/osthread.d

class `ThreadGroup`;
  This class is intended to simplify certain common programming techniques.
  final Thread `create`(void function() `fn`);
    Creates and starts a new Thread object that executes fn and adds it to the list of tracked threads.
    Parameters:

    void function() `fn` | The thread function.

    Returns:
    A reference to the newly created thread.
  final Thread `create`(void delegate() `dg`);
    Creates and starts a new Thread object that executes dg and adds it to the list of tracked threads.
    Parameters:

    void delegate() `dg` | The thread function.

    Returns:
    A reference to the newly created thread.
  final void `add`(Thread `t`);
    Add t to the list of tracked threads if it is not already being tracked.
    Parameters:

    Thread `t` | The thread to add.

    In t must not be null.

  final void `remove`(Thread `t`);
    Removes t from the list of tracked threads. No operation will be performed if t is not currently being tracked by this object.
    Parameters:

    Thread `t` | The thread to remove.

    In t must not be null.

  final int `opApply`(scope int delegate(ref Thread) `dg`);
    Operates on all threads currently tracked by this object.
  final void `joinAll`(bool `rethrow` = true);
    Iteratively joins all tracked threads. This function will block add, remove, and opApply until it completes.
    Parameters:

    bool `rethrow` | Rethrow any unhandled exception which may have caused the current thread to terminate.

    Throws:
    Any exception not handled by the joined threads.

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