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# core.gc.registry

Contains a registry for GC factories.
License:
Boost License 1.0.
Authors:
Martin Nowak

alias `GCFactory` = GC function();
  A factory function that instantiates an implementation of the GC interface. In case the instance was allocated on the C heap, it is supposed to free itself upon calling it's destructor.
  The factory should print an error and abort the program if it cannot successfully initialize the GC instance.
nothrow @nogc void `registerGCFactory`(string `name`, GCFactory `factory`);
  Register a GC factory under the given `name`. This function must be called from a C constructor before druntime is initialized.
  To use the registered GC, it's name must be specified gcopt runtime option, e.g. by passing , --DRT-gcopt=gc:my_gc_name as application argument.
  Parameters:

  string `name` | name of the GC implementation; should be unique
  GCFactory `factory` | function to instantiate the implementation

  Note The registry does not perform synchronization, as registration is assumed to be executed serially, as is the case for C constructors.

  See Also:
  Configuring the Garbage Collector
GC `createGCInstance`(string `name`);
  Called during runtime initialization to initialize a GC instance of given `name`.
  Parameters:

  string `name` | name of the GC to instantiate

  Returns:
  The created GC instance or null if no factory for that name was registered

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