mmtk/plan/immix/
mutator.rs

1use super::Immix;
2use crate::plan::mutator_context::common_prepare_func;
3use crate::plan::mutator_context::common_release_func;
4use crate::plan::mutator_context::create_allocator_mapping;
5use crate::plan::mutator_context::create_space_mapping;
6use crate::plan::mutator_context::Mutator;
7use crate::plan::mutator_context::MutatorBuilder;
8use crate::plan::mutator_context::MutatorConfig;
9use crate::plan::mutator_context::ReservedAllocators;
10use crate::plan::AllocationSemantics;
11use crate::util::alloc::allocators::AllocatorSelector;
12use crate::util::alloc::ImmixAllocator;
13use crate::util::opaque_pointer::{VMMutatorThread, VMWorkerThread};
14use crate::vm::VMBinding;
15use crate::MMTK;
16use enum_map::EnumMap;
17
18pub fn immix_mutator_release<VM: VMBinding>(mutator: &mut Mutator<VM>, tls: VMWorkerThread) {
19    let immix_allocator = unsafe {
20        mutator
21            .allocators
22            .get_allocator_mut(mutator.config.allocator_mapping[AllocationSemantics::Default])
23    }
24    .downcast_mut::<ImmixAllocator<VM>>()
25    .unwrap();
26    immix_allocator.reset();
27
28    common_release_func(mutator, tls);
29}
30
31pub(in crate::plan) const RESERVED_ALLOCATORS: ReservedAllocators = ReservedAllocators {
32    n_immix: 1,
33    ..ReservedAllocators::DEFAULT
34};
35
36lazy_static! {
37    pub static ref ALLOCATOR_MAPPING: EnumMap<AllocationSemantics, AllocatorSelector> = {
38        let mut map = create_allocator_mapping(RESERVED_ALLOCATORS, true);
39        map[AllocationSemantics::Default] = AllocatorSelector::Immix(0);
40        map
41    };
42}
43
44pub fn create_immix_mutator<VM: VMBinding>(
45    mutator_tls: VMMutatorThread,
46    mmtk: &'static MMTK<VM>,
47) -> Mutator<VM> {
48    let immix = mmtk.get_plan().downcast_ref::<Immix<VM>>().unwrap();
49    let config = MutatorConfig {
50        allocator_mapping: &ALLOCATOR_MAPPING,
51        space_mapping: Box::new({
52            let mut vec = create_space_mapping(RESERVED_ALLOCATORS, true, immix);
53            vec.push((AllocatorSelector::Immix(0), &immix.immix_space));
54            vec
55        }),
56        prepare_func: &common_prepare_func,
57        release_func: &immix_mutator_release,
58    };
59
60    let builder = MutatorBuilder::new(mutator_tls, mmtk, config);
61    builder.build()
62}
mmtk/plan/immix/mutator.rs

mmtk/plan/immix/
mutator.rs
