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# std.experimental.allocator.gc_allocator

D's built-in garbage-collected allocator.

Source std/experimental/allocator/gc_allocator.d

struct `GCAllocator`;
  D's built-in garbage-collected allocator.
  Examples:

      auto buffer = GCAllocator.instance.allocate(1024 * 1024 * 4);
      // deallocate upon scope's end (alternatively: leave it to collection)
      scope(exit) GCAllocator.instance.deallocate(buffer);
      //...

  enum uint `alignment`;
    The alignment is a static constant equal to platformAlignment, which ensures proper alignment for any D data type.
  shared const pure nothrow @trusted void[] `allocate`(size_t `bytes`);
  shared const pure nothrow @trusted bool `expand`(ref void[] `b`, size_t `delta`);
  shared const pure nothrow @system bool `reallocate`(ref void[] `b`, size_t `newSize`);
  shared const pure nothrow @nogc @trusted Ternary `resolveInternalPointer`(const void* `p`, ref void[] `result`);
  shared const pure nothrow @nogc @system bool `deallocate`(void[] `b`);
  shared const pure nothrow @nogc @safe size_t `goodAllocSize`(size_t `n`);
    Standard allocator methods per the semantics defined above. The deallocate and `reallocate` methods are @system because they may move memory around, leaving dangling pointers in user code.
  static shared const GCAllocator `instance`;
    Returns the global instance of this allocator type. The garbage collected allocator is thread-safe, therefore all of its methods and `instance` itself are shared.

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