Report a bug
If you spot a problem with this page, click here to create a Bugzilla issue.
Improve this page
Quickly fork, edit online, and submit a pull request for this page. Requires a signed-in GitHub account. This works well for small changes. If you'd like to make larger changes you may want to consider using a local clone.


struct GCAllocator;
D's built-in garbage-collected allocator.
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 pure nothrow @trusted void[] allocate(size_t bytes);

shared @system bool expand(ref void[] b, size_t delta);

shared pure nothrow @system bool reallocate(ref void[] b, size_t newSize);

shared pure nothrow void[] resolveInternalPointer(void* p);

shared pure nothrow @system bool deallocate(void[] b);

shared 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 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.