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refactor: mark 边链归一为 native 家族分类器驱动

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彭俊皓
2026-09-27 02:05:53 +00:00
parent 18737c70ea
commit 00a8e9a2bd
3 changed files with 291 additions and 74 deletions
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crates/oxide_vm/src/session_gc.rs
+11 -74
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@@ -7,6 +7,7 @@ use oxide_types::object::{Cell, JsObject, JsString, PropMetaEntry};
use oxide_types::value::JsValue;
use rustc_hash::FxBuildHasher;
use crate::native_box_dispatch;
use crate::vm::Vm;
use oxide_builtins::{array_buffer, data_view, disposable_stack, map, module, regexp, set, typed_array, weak_map};
@@ -177,88 +178,24 @@ impl SessionGc {
Self::process_edge(obj.captured_this(), vm, stack, live_strings, live_bigints);
Self::process_edge(obj.home_object(), vm, stack, live_strings, live_bigints);
Self::process_edge(obj.boxed_value(), vm, stack, live_strings, live_bigints);
if obj.is_map() {
for value in map::map_native_edges(obj) {
// native 载荷家族边：单点分类 + 家族表函数引用驱动，
// 替代逐族 is_* 谓词链（各家族边函数引用见 native_box_dispatch）。
let ops = native_box_dispatch::ops_for(native_box_dispatch::classify(obj));
if let Some(object_edges) = ops.object_edges {
for value in object_edges(obj) {
Self::process_edge(value, vm, stack, live_strings, live_bigints);
}
}
if obj.is_set() {
for value in set::set_native_edges(obj) {
Self::process_edge(value, vm, stack, live_strings, live_bigints);
}
}
if obj.is_weak_map_obj() {
// 仅值边进 mark（强边）；键为弱边，不入栈不置位。
for value in weak_map::weak_map_native_edges(obj) {
Self::process_edge(value, vm, stack, live_strings, live_bigints);
}
}
if obj.is_disposable_stack_obj() || obj.is_async_disposable_stack_obj() {
for value in disposable_stack::dispose_edges(obj) {
Self::process_edge(value, vm, stack, live_strings, live_bigints);
}
}
if obj.is_typed_array_obj() {
for value in typed_array::typed_array_native_edges(obj) {
Self::process_edge(value, vm, stack, live_strings, live_bigints);
}
}
if obj.is_data_view_obj() {
for value in data_view::data_view_native_edges(obj) {
Self::process_edge(value, vm, stack, live_strings, live_bigints);
}
}
if obj.is_module_namespace() {
for value in module::module_ns_native_edges(obj) {
Self::process_edge(value, vm, stack, live_strings, live_bigints);
}
for ptr in module::module_ns_cell_edges(obj) {
live_cells.insert(ptr);
}
}
if obj.is_generator_obj() {
for value in crate::generator::generator_native_edges(obj) {
Self::process_edge(value, vm, stack, live_strings, live_bigints);
}
for ptr in crate::generator::generator_native_string_edges(obj) {
if let Some(string_edges) = ops.string_edges {
for ptr in string_edges(obj) {
Self::mark_string_live(live_strings, ptr);
}
for ptr in crate::generator::generator_native_cell_edges(obj) {
}
if let Some(cell_edges) = ops.cell_edges {
for ptr in cell_edges(obj) {
live_cells.insert(ptr);
}
}
if obj.is_promise_obj() {
for value in crate::promise::promise_native_edges(obj) {
Self::process_edge(value, vm, stack, live_strings, live_bigints);
}
}
if obj.is_async_obj() {
for value in crate::async_func::async_native_edges(obj) {
Self::process_edge(value, vm, stack, live_strings, live_bigints);
}
for ptr in crate::async_func::async_native_string_edges(obj) {
Self::mark_string_live(live_strings, ptr);
}
for ptr in crate::async_func::async_native_cell_edges(obj) {
live_cells.insert(ptr);
}
}
if obj.is_async_generator_obj() {
for value in crate::async_generator::async_generator_native_edges(obj) {
Self::process_edge(value, vm, stack, live_strings, live_bigints);
}
for ptr in crate::async_generator::async_generator_native_string_edges(obj) {
Self::mark_string_live(live_strings, ptr);
}
for ptr in crate::async_generator::async_generator_native_cell_edges(obj) {
live_cells.insert(ptr);
}
}
// RegExp 实例 source/flags 字段持有字符串边。
if obj.is_regexp_obj() {
Self::process_edge(obj.get_regexp_source(), vm, stack, live_strings, live_bigints);
Self::process_edge(obj.get_regexp_flags(), vm, stack, live_strings, live_bigints);
}
// 遍历 upvalue cell 中的引用：cell 指针本身入存活集（对象 upvalues 边
// 是 cell 的根面），值边照常走 process_edge。
for cell_ptr in obj.upvalues_slice() {