mmtk/plan/generational/copying/
mutator.rs

1pub(super) use super::super::ALLOCATOR_MAPPING;
2use super::GenCopy;
3use crate::plan::barriers::ObjectBarrier;
4use crate::plan::generational::barrier::GenObjectBarrierSemantics;
5use crate::plan::generational::create_gen_space_mapping;
6use crate::plan::mutator_context::common_prepare_func;
7use crate::plan::mutator_context::common_release_func;
8use crate::plan::mutator_context::Mutator;
9use crate::plan::mutator_context::MutatorBuilder;
10use crate::plan::mutator_context::MutatorConfig;
11use crate::plan::AllocationSemantics;
12use crate::util::alloc::BumpAllocator;
13use crate::util::{VMMutatorThread, VMWorkerThread};
14use crate::vm::VMBinding;
15use crate::MMTK;
16
17pub fn gencopy_mutator_release<VM: VMBinding>(mutator: &mut Mutator<VM>, tls: VMWorkerThread) {
18    // reset nursery allocator
19    let bump_allocator = unsafe {
20        mutator
21            .allocators
22            .get_allocator_mut(mutator.config.allocator_mapping[AllocationSemantics::Default])
23    }
24    .downcast_mut::<BumpAllocator<VM>>()
25    .unwrap();
26    bump_allocator.reset();
27
28    common_release_func(mutator, tls);
29}
30
31pub fn create_gencopy_mutator<VM: VMBinding>(
32    mutator_tls: VMMutatorThread,
33    mmtk: &'static MMTK<VM>,
34) -> Mutator<VM> {
35    let gencopy = mmtk.get_plan().downcast_ref::<GenCopy<VM>>().unwrap();
36    let config = MutatorConfig {
37        allocator_mapping: &ALLOCATOR_MAPPING,
38        space_mapping: Box::new(create_gen_space_mapping(
39            mmtk.get_plan(),
40            &gencopy.gen.nursery,
41        )),
42        prepare_func: &common_prepare_func,
43        release_func: &gencopy_mutator_release,
44    };
45
46    let builder = MutatorBuilder::new(mutator_tls, mmtk, config);
47    builder
48        .barrier(Box::new(ObjectBarrier::new(
49            GenObjectBarrierSemantics::new(mmtk, gencopy),
50        )))
51        .build()
52}
mmtk/plan/generational/copying/mutator.rs

mmtk/plan/generational/copying/
mutator.rs
