Module mmtk::util::alloc

Allocators Various allocators implementation.

Re-exports

• pub use self::immix_allocator::ImmixAllocator;
• pub use free_list_allocator::FreeListAllocator;

Modules

• allocator 🔒
  The allocator trait and allocation-related functions.
• allocators 🔒
  A list of all the allocators, embedded in Mutator
• bumpallocator 🔒
  Bump pointer allocator
• embedded_meta_data 🔒
  Embedded metadata pages
• free_list_allocator
  Free list allocator based on Mimalloc
• immix_allocator
  Immix allocator
• large_object_allocator 🔒
• malloc_allocator 🔒
  An alloactor backed by malloc
• markcompact_allocator 🔒
  Mark compact allocator (actually a bump pointer allocator with an extra heade word)

Structs

• BumpAllocator
  A bump pointer allocator. It keeps a thread local allocation buffer, and bumps a cursor to allocate from the buffer.
• BumpPointer
  A common fast-path bump-pointer allocator shared across different allocator implementations that use bump-pointer allocation. A BumpPointer is always initialized with cursor = 0, limit = 0, so the first allocation always fails the check of cursor + size < limit and goes to the slowpath. A binding can also take advantage of this design to zero-initialize the a bump pointer.
• LargeObjectAllocator
  An allocator that only allocates at page granularity. This is intended for large objects.
• MallocAllocator
  The allocator that internally uses malloc for all the allocation requests. This allocator is only intended for experimental uses.
• MarkCompactAllocator
  A thin wrapper(specific implementation) of bump allocator reserve extra bytes when allocating

Enums

• AllocationError
  A list of errors that MMTk can encounter during allocation.
• AllocatorInfo
  This type describes allocator information. It is used to generate fast paths for the GC. All offset fields are relative to Mutator.
• AllocatorSelector
  This type describe an allocator in the crate::Mutator. For some VM bindings, they may need to access this type from native code. This type is equivalent to the following native types: #[repr(C)] struct AllocatorSelector { tag: AllocatorSelectorTag, payload: u8, } #[repr(u8)] enum AllocatorSelectorTag { BumpPointer, LargeObject, … }

Traits

• Allocator
  A trait which implements allocation routines. Every allocator needs to implements this trait.

Functions

• fill_alignment_gap
  Fill the specified region with the alignment value.