MMTk OpenJDK Binding 0.12.0

• Adds a few missing includes.
• Adds weak reference support (It is disabled by default. Set MMTk option no_reference_types to false to enable it).
• Fixes a bug in C2 allocation fastpath generation for mark compact which caused significant slowdown for mark compact allocation.
• Fixes a bug in transitioning thread state for the harness_begin call which may cause a 'deadlock in safepoint code' error.
• Updates the OpenJDK version to 11.0.15+8.
• Updates to mmtk-core 0.12.0.

MMTk OpenJDK Binding 0.11.0

• The OpenJDK submodule is removed from the repo. We now record the VM version
  in [package.metadata.openjdk] in the Cargo manifest Cargo.toml.
• The OpenJDK binding now builds with stable Rust toolchains.
• Removes object_alignment from OpenJDK_Upcalls.
• Implements ObjectModel::get_reference_when_copied_to().
• Updates to mmtk-core 0.11.0.

MMTk OpenJDK Binding 0.10.0

• Implements a fastpath for ObjectModel::get_current_size() in Rust.
• Supports setting MMTk options by -XX:THIRD_PARTY_HEAP_OPTIONS=.
• Supports proper OutOfMemory exceptions.
• Upudates to mmtk-core 0.10.0.

MMTk OpenJDK Binding 0.9.0

• Supports the MarkCompact plan.
• Updates to mmtk-core 0.9.0.

MMTk OpenJDK Binding 0.8.0

• Introduces A VM companion thread to trigger safe point synchronisation. This fixed a bug that
  MMTk's call to SafePointerSynchronize::begin() may race with the OpenJDK's VM thread.
• Changes COORDINATOR_ONLY_STW to false. Stopping and resuming mutators are done by the companion thread,
  amd it is no longer a requirement for them to be done by the same GC thread.
• Fixes a bug that for some allocations, both fastpath and slowpath were invoked.
• Fixes a bug in generating code to set the alloc bit in C1 compiler.
• Fixes a bug that some derived pointers were missing as roots.
• Updates to mmtk-core 0.8.0.

MMTk OpenJDK Binding 0.7.0

• Supports the GenImmix plan.
• Supports the global_alloc_bit feature in mmtk-core.
• Fixes monitor misuse in the finalizer thread.
• Fixes style for C++ code to match OpenJDK style guidelines.
• Updates to mmtk-core 0.7.0.

MMTk OpenJDK Binding 0.6.0

• Supports the Immix plan.
• Uses side mark bit by default. Adds a feature 'mark_bit_in_header' to switch to in-header mark bit.
• Adds a size check for allocation so over-sized objects will be allocated to large object space.
• Updates to mmtk-core 0.6.0.

MMTk OpenJDK Binding 0.5.0

• Supports the new PageProtect plan, added to help debugging.
• Updates ObjectModel to support the new metadata structure, where the bindings decide whether to put each per-object metadata on side or in object header.
• Updates to mmtk-core 0.5.0.

MMTk OpenJDK Binding 0.4.0

• Fixes a bug where benchmarks failed randomly due to duplicate edges
• Switches to our new OpenJDK fork (11.0.11+6-mmtk) which is based-on OpenJDK-11 update repo
• Adds style checks
• Cleans up some unused code
• Refactors in accordance with the latest changes in mmtk-core API
• Updates to mmtk-core v0.4.0

MMTk OpenJDK Binding 0.3.0

• Supported the marksweep plan in mmtk-core.
• Supported fastpath for object barrier (used in gencopy).
• Supported finalization
• Supported runtime plan selection (through the environment variable MMTK_PLAN)
• Updated to mmtk-core 0.3.0