Implement a Generational Garbage Collector

[Techcable]

Implement a heavy-duty generational garbage collector. This should significantly improve performance for applications where allocations are frequent. It is intended primarily for use in language VMs and JITs (#12).

Tasks

• Basic Implementation
• Use card tables for efficient write barriers
• Extremely efficent bump-pointer allocation for new generation
  • Properly relocate pointers
• Handle "humongous objects" properly
  • Most GCs allocate very large objects (4KB+) directly into a dedicated space, bypassing the new generation