mirror of
https://github.com/pjh456/OxideJS.git
synced 2026-10-24 02:31:13 +08:00
790 lines
30 KiB
Rust
790 lines
30 KiB
Rust
#![allow(clippy::arc_with_non_send_sync)]
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use std::num::NonZeroUsize;
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use std::sync::Arc;
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use oxide_types::mem::P;
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use oxide_types::object::JsObject;
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use oxide_types::value::JsValue;
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use crate::builtin::BuiltinWorld;
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use crate::code_forge::CodeForge;
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use crate::kernel_info;
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use crate::prop_forge::PropForge;
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use crate::shape_forge::{ShapeForge, EMPTY_SHAPE_ID};
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use crate::string_forge::PermInterner;
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use oxide_log;
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use oxide_log::{Level, SUBSYSTEM_COUNT};
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/// kernel 运行配置：VM 池规模、步数/调用深度上限、session GC 阈值、
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/// 日志级别与内置对象预热开关。由三个预设构造器（[`KernelConfig::minimal`] /
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/// [`KernelConfig::standard`] / [`KernelConfig::full`]）或默认值创建。
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#[derive(Clone)]
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pub struct KernelConfig {
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pub min_pool_size: usize,
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pub max_pool_size: Option<usize>,
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pub max_dead_strings: Option<usize>,
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pub max_steps: Option<u64>,
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pub max_call_depth: usize,
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pub session_gc_threshold: usize,
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pub max_cached_modules: usize,
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pub log_levels: [Level; SUBSYSTEM_COUNT],
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pub warmup_builtin_shapes: bool,
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pub warmup_builtin_code: bool,
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pub warmup_builtin_ic: bool,
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}
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impl KernelConfig {
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/// 最小配置：小 VM 池、关闭 code/IC 预热，适合嵌入式或单次执行场景。
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pub fn minimal() -> Self {
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Self {
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min_pool_size: 4,
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max_pool_size: Some(8),
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max_dead_strings: Some(10_000),
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max_steps: None,
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max_call_depth: 1024,
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session_gc_threshold: 33_554_432,
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max_cached_modules: 512,
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log_levels: [Level::Off; SUBSYSTEM_COUNT],
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warmup_builtin_shapes: true,
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warmup_builtin_code: false,
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warmup_builtin_ic: false,
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}
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}
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/// 标准配置：默认 VM 池大小，开启内置对象 code 预热。
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pub fn standard() -> Self {
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Self {
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min_pool_size: 8,
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max_pool_size: Some(32),
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max_dead_strings: Some(10_000),
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max_steps: None,
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max_call_depth: 1024,
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session_gc_threshold: 33_554_432,
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max_cached_modules: 512,
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log_levels: [Level::Off; SUBSYSTEM_COUNT],
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warmup_builtin_shapes: true,
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warmup_builtin_code: true,
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warmup_builtin_ic: false,
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}
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}
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/// 全量配置：无上限 VM 池，开启 shapes/code/IC 全量预热，为性能场景服务。
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pub fn full() -> Self {
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Self {
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min_pool_size: 16,
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max_pool_size: None,
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max_dead_strings: Some(5_000),
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max_steps: None,
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max_call_depth: 1024,
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session_gc_threshold: 33_554_432,
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max_cached_modules: 512,
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log_levels: [Level::Off; SUBSYSTEM_COUNT],
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warmup_builtin_shapes: true,
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warmup_builtin_code: true,
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warmup_builtin_ic: true,
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}
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}
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/// 读取 session GC 阈值（字节数）。
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pub fn session_gc_threshold(&self) -> usize {
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self.session_gc_threshold
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}
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/// 设置 session GC 阈值（字节数），超过后触发一次 session 级 GC。
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pub fn set_session_gc_threshold(&mut self, bytes: usize) {
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self.session_gc_threshold = bytes;
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}
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/// 读取 code cache 的 module 数量上限。
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pub fn max_cached_modules(&self) -> usize {
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self.max_cached_modules
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}
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/// 设置 code cache 的 module 数量上限。
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pub fn set_max_cached_modules(&mut self, cap: usize) {
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self.max_cached_modules = cap;
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}
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}
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impl Default for KernelConfig {
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fn default() -> Self {
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Self::minimal()
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}
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}
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/// 不可变、跨所有 VM 实例永久共享的状态。
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/// 构造后从不重建——forge 表为 append-only。
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pub struct KernelCore {
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pub config: KernelConfig,
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pub perm_interner: Arc<PermInterner>,
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pub shape_forge: Arc<ShapeForge>,
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pub code_forge: Arc<CodeForge>,
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pub prop_forge: Arc<PropForge>,
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}
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impl KernelCore {
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/// 按配置创建共享核心：初始化日志系统与四个共享 forge（interner/shape/code/prop）。
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pub fn new(config: KernelConfig) -> Arc<Self> {
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oxide_log::init(&oxide_log::LogConfig {
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output: oxide_log::Output::Stderr,
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levels: config.log_levels,
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});
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let perm_interner = Arc::new(PermInterner::new());
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let shape_forge = Arc::new(ShapeForge::new());
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let code_forge = Arc::new(CodeForge::new(
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NonZeroUsize::new(config.max_cached_modules).expect("max_cached_modules must be greater than zero"),
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));
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let prop_forge = Arc::new(PropForge::new());
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let max_cached = config.max_cached_modules;
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let min_pool = config.min_pool_size;
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let core = Arc::new(Self {
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config,
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perm_interner,
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shape_forge,
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code_forge,
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prop_forge,
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});
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kernel_info!("KernelCore initialized: max_cached_modules={}, min_pool={}", max_cached, min_pool);
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core
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}
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/// 只读访问永久字符串 intern 表。
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pub fn perm_interner(&self) -> &Arc<PermInterner> {
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&self.perm_interner
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}
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/// 只读访问共享 hidden class（shape）存储。
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pub fn shape_forge(&self) -> &Arc<ShapeForge> {
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&self.shape_forge
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}
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/// 只读访问共享 bytecode cache。
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pub fn code_forge(&self) -> &Arc<CodeForge> {
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&self.code_forge
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}
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/// 只读访问共享属性模板缓存。
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pub fn prop_forge(&self) -> &Arc<PropForge> {
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&self.prop_forge
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}
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/// 只读访问构建时固定的配置。
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pub fn config(&self) -> &KernelConfig {
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&self.config
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}
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/// 读取 session GC 阈值（字节数）。
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pub fn session_gc_threshold(&self) -> usize {
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self.config.session_gc_threshold
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}
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/// 设置 session GC 阈值（字节数）。
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pub fn set_session_gc_threshold(&mut self, bytes: usize) {
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self.config.session_gc_threshold = bytes;
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}
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/// 读取 code cache 的 module 数量上限。
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pub fn max_cached_modules(&self) -> usize {
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self.config.max_cached_modules
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}
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/// 设置 code cache 的 module 数量上限。
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pub fn set_max_cached_modules(&mut self, cap: usize) {
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self.config.max_cached_modules = cap;
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}
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/// 在每次 runner（test262 等）边界清理瞬时 shape/prop 缓存，防止跨测试累积膨胀。
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///
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/// 字符串 intern 表是 append-only，无需清理；仅当 shape 或 prop 表超过阈值时才执行
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/// [`ShapeForge::clear_transient`] 与 [`PropForge::clear`]。
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pub fn sweep_runner_forges(&self) {
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// 键 interner 是 append-only（无逐次清理）；只有瞬时 shape/prop 表
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// 需要在 test262 每测试边界做上限约束。
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// test262 每测试新建 VM/session。在该边界，此前测试产生的 JS 对象
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// 不应保留任何瞬时 shape/模板。
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if self.shape_forge.len() > 50_000 {
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self.shape_forge.clear_transient();
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self.prop_forge.clear();
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} else if self.prop_forge.len() > 50_000 {
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self.prop_forge.clear();
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}
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}
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}
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/// 每会话可变状态：内置原型对象与全局对象。
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/// 在 full_reset() 时重建，实现 JS 执行之间的完全隔离。
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pub struct KernelSession {
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pub builtin_world: Arc<BuiltinWorld>,
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pub global_object: P<JsObject>,
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pub builtin_snapshot: BuiltinSnapshot,
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}
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/// 供 reset 脏检查用的世代快照。
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///
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/// 维护注意：每个新增的 `BuiltinWorld` 对象字段都必须加到这里以及
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/// `KernelSession::dirty_since_snapshot()`，以便选择性重置重建正确的
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/// builtin 家族。
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pub const NUM_BUILTINS: usize = 66;
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/// 内置对象枚举 id，与 `BuiltinWorld` 中的存储槽一一对应。
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///
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/// 覆盖各构造器/原型、Error 家族、集合类型、TypedArray 家族与 well-known symbols；
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/// `repr(u8)` 使其可直接作为数组下标（`u8` 值即下标）。
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#[derive(Clone, Copy, Debug, PartialEq, Eq)]
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#[repr(u8)]
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pub enum BuiltinId {
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ObjectProto = 0,
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ArrayProto = 1,
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FunctionProto = 2,
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StringProto = 3,
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NumberProto = 4,
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BooleanProto = 5,
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ErrorProto = 6,
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SymbolProto = 7,
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ObjectConstructor = 8,
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ArrayConstructor = 9,
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FunctionConstructor = 10,
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StringConstructor = 11,
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NumberConstructor = 12,
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BooleanConstructor = 13,
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ErrorConstructor = 14,
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SymbolConstructor = 15,
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TypeErrorProto = 16,
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ReferenceErrorProto = 17,
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RangeErrorProto = 18,
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SyntaxErrorProto = 19,
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UriErrorProto = 20,
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EvalErrorProto = 21,
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MathObject = 22,
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JsonObject = 23,
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DateConstructor = 24,
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DateProto = 25,
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SetConstructor = 26,
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SetProto = 27,
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MapConstructor = 28,
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MapProto = 29,
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RegExpConstructor = 30,
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RegExpProto = 31,
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ArrayBufferConstructor = 32,
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ArrayBufferProto = 33,
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DataViewConstructor = 34,
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DataViewProto = 35,
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TypedArrayProto = 36,
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Int8ArrayConstructor = 37,
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Int8ArrayProto = 38,
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Uint8ArrayConstructor = 39,
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Uint8ArrayProto = 40,
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Uint8ClampedArrayConstructor = 41,
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Uint8ClampedArrayProto = 42,
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Int16ArrayConstructor = 43,
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Int16ArrayProto = 44,
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Uint16ArrayConstructor = 45,
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Uint16ArrayProto = 46,
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Int32ArrayConstructor = 47,
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Int32ArrayProto = 48,
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Uint32ArrayConstructor = 49,
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Uint32ArrayProto = 50,
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Float32ArrayConstructor = 51,
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Float32ArrayProto = 52,
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Float64ArrayConstructor = 53,
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Float64ArrayProto = 54,
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BigInt64ArrayConstructor = 55,
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BigInt64ArrayProto = 56,
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BigUint64ArrayConstructor = 57,
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BigUint64ArrayProto = 58,
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SymMatch = 59,
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SymReplace = 60,
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SymSearch = 61,
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SymSplit = 62,
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SymIterator = 63,
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SymToPrimitive = 64,
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SymHasInstance = 65,
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}
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impl BuiltinId {
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/// 全部 66 个内置对象的 id 常量表，供快照/脏检查按序遍历。
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pub const ALL: [BuiltinId; NUM_BUILTINS] = [
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BuiltinId::ObjectProto,
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BuiltinId::ArrayProto,
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BuiltinId::FunctionProto,
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BuiltinId::StringProto,
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BuiltinId::NumberProto,
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BuiltinId::BooleanProto,
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BuiltinId::ErrorProto,
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BuiltinId::SymbolProto,
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BuiltinId::ObjectConstructor,
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BuiltinId::ArrayConstructor,
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BuiltinId::FunctionConstructor,
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BuiltinId::StringConstructor,
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BuiltinId::NumberConstructor,
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BuiltinId::BooleanConstructor,
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BuiltinId::ErrorConstructor,
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BuiltinId::SymbolConstructor,
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BuiltinId::TypeErrorProto,
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BuiltinId::ReferenceErrorProto,
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BuiltinId::RangeErrorProto,
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BuiltinId::SyntaxErrorProto,
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BuiltinId::UriErrorProto,
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BuiltinId::EvalErrorProto,
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BuiltinId::MathObject,
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BuiltinId::JsonObject,
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BuiltinId::DateConstructor,
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BuiltinId::DateProto,
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BuiltinId::SetConstructor,
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BuiltinId::SetProto,
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BuiltinId::MapConstructor,
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BuiltinId::MapProto,
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BuiltinId::RegExpConstructor,
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BuiltinId::RegExpProto,
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BuiltinId::ArrayBufferConstructor,
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BuiltinId::ArrayBufferProto,
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BuiltinId::DataViewConstructor,
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BuiltinId::DataViewProto,
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BuiltinId::TypedArrayProto,
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BuiltinId::Int8ArrayConstructor,
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BuiltinId::Int8ArrayProto,
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BuiltinId::Uint8ArrayConstructor,
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BuiltinId::Uint8ArrayProto,
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BuiltinId::Uint8ClampedArrayConstructor,
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BuiltinId::Uint8ClampedArrayProto,
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BuiltinId::Int16ArrayConstructor,
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BuiltinId::Int16ArrayProto,
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BuiltinId::Uint16ArrayConstructor,
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BuiltinId::Uint16ArrayProto,
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BuiltinId::Int32ArrayConstructor,
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BuiltinId::Int32ArrayProto,
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BuiltinId::Uint32ArrayConstructor,
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BuiltinId::Uint32ArrayProto,
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BuiltinId::Float32ArrayConstructor,
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BuiltinId::Float32ArrayProto,
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BuiltinId::Float64ArrayConstructor,
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BuiltinId::Float64ArrayProto,
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BuiltinId::BigInt64ArrayConstructor,
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BuiltinId::BigInt64ArrayProto,
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BuiltinId::BigUint64ArrayConstructor,
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BuiltinId::BigUint64ArrayProto,
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BuiltinId::SymMatch,
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BuiltinId::SymReplace,
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BuiltinId::SymSearch,
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BuiltinId::SymSplit,
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BuiltinId::SymIterator,
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BuiltinId::SymToPrimitive,
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BuiltinId::SymHasInstance,
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];
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}
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/// 内置对象世代（generation）快照：记录构造时各对象及其 stub 的世代号与数量。
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///
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/// 供 [`KernelSession::dirty_since_snapshot`] 对比，判断哪些 builtin 家族在运行期被污染。
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#[derive(Clone, Debug)]
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pub struct BuiltinSnapshot {
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pub generations: [u32; NUM_BUILTINS],
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pub global_object_generation: u32,
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pub stub_objects_len: usize,
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pub stub_object_generations: Vec<u32>,
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}
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impl BuiltinSnapshot {
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fn gen(obj: &P<JsObject>) -> u32 {
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obj.generation()
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}
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/// 对给定 builtin world 与 global object 采集一份世代快照。
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pub fn new(world: &BuiltinWorld, global_object: &P<JsObject>) -> Self {
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let mut generations = [0u32; NUM_BUILTINS];
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for (i, id) in BuiltinId::ALL.iter().enumerate() {
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generations[i] = Self::gen(world.get_by_id(*id));
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}
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debug_assert_eq!(generations.len(), NUM_BUILTINS);
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Self {
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generations,
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global_object_generation: Self::gen(global_object),
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stub_objects_len: world.stub_objects.len(),
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stub_object_generations: world.stub_objects.iter().map(Self::gen).collect(),
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}
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}
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}
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/// 按 builtin 家族划分的脏标记位集合：运行期哪些内置对象被用户代码修改过。
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///
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/// `any_builtin_dirty` 只关注 builtin world 内部对象，`any` 额外包含 global object。
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#[derive(Clone, Copy, Debug, Default, PartialEq, Eq)]
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pub struct BuiltinDirtySet {
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pub object: bool,
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pub array: bool,
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pub function: bool,
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pub string: bool,
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pub number: bool,
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pub boolean: bool,
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pub error_family: bool,
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pub symbol_family: bool,
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pub math: bool,
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pub json: bool,
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pub date: bool,
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pub set: bool,
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pub map: bool,
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pub regexp: bool,
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pub array_buffer: bool,
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pub data_view: bool,
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pub typed_array_family: bool,
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pub stubs: bool,
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pub global: bool,
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}
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impl BuiltinDirtySet {
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/// 是否存在任何 builtin world 内部对象被污染（不含 global object）。
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pub fn any_builtin_dirty(&self) -> bool {
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self.object
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|| self.array
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|| self.function
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|| self.string
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|| self.number
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|| self.boolean
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|| self.error_family
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|| self.symbol_family
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|| self.math
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|| self.json
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|| self.date
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|| self.set
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|| self.map
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|| self.regexp
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|| self.array_buffer
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|| self.data_view
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|| self.typed_array_family
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|| self.stubs
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}
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/// 是否存在任何污染（builtin world 或 global object）。
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pub fn any(&self) -> bool {
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self.any_builtin_dirty() || self.global
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}
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}
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impl KernelSession {
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fn new_global_object(core: &KernelCore) -> P<JsObject> {
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let mut global_obj = JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null());
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let si_nan = core.perm_interner.intern("NaN").0;
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let si_undef = core.perm_interner.intern("undefined").0;
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let si_infinity = core.perm_interner.intern("Infinity").0;
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let nan_shape = core.shape_forge.make_shape(EMPTY_SHAPE_ID, si_nan);
|
||
global_obj.set_shape_id(nan_shape);
|
||
global_obj.ensure_hash_props().push(JsValue::float(f64::NAN));
|
||
|
||
let undef_shape = core.shape_forge.make_shape(nan_shape, si_undef);
|
||
global_obj.set_shape_id(undef_shape);
|
||
global_obj.ensure_hash_props().push(JsValue::undefined());
|
||
|
||
let inf_shape = core.shape_forge.make_shape(undef_shape, si_infinity);
|
||
global_obj.set_shape_id(inf_shape);
|
||
global_obj.ensure_hash_props().push(JsValue::float(f64::INFINITY));
|
||
|
||
P::new(global_obj)
|
||
}
|
||
|
||
/// 从 KernelCore 构建一个全新 session。所有 string/shape intern 调用在
|
||
/// 第二次及后续调用时命中缓存——净开销 < 0.5 ms。
|
||
pub fn new(core: &KernelCore) -> Self {
|
||
let builtin_world = Arc::new(BuiltinWorld::new(&core.perm_interner, &core.shape_forge));
|
||
let global_object = Self::new_global_object(core);
|
||
let builtin_snapshot = BuiltinSnapshot::new(&builtin_world, &global_object);
|
||
|
||
Self {
|
||
builtin_world,
|
||
global_object,
|
||
builtin_snapshot,
|
||
}
|
||
}
|
||
|
||
/// 只读访问当前 session 的 builtin world。
|
||
pub fn builtin_world(&self) -> &Arc<BuiltinWorld> {
|
||
&self.builtin_world
|
||
}
|
||
|
||
/// 只读访问当前 session 的 global object。
|
||
pub fn global_object(&self) -> &P<JsObject> {
|
||
&self.global_object
|
||
}
|
||
|
||
/// 重新采集内置对象世代快照，作为下一次脏检查的基准。
|
||
pub fn record_snapshot(&mut self) {
|
||
self.builtin_snapshot = BuiltinSnapshot::new(&self.builtin_world, &self.global_object);
|
||
}
|
||
|
||
/// 对比当前世代与最近快照，返回各 builtin 家族是否被污染。
|
||
pub fn dirty_since_snapshot(&self) -> BuiltinDirtySet {
|
||
let world = self.builtin_world.as_ref();
|
||
let snapshot = &self.builtin_snapshot;
|
||
let stub_generations_dirty = world
|
||
.stub_objects
|
||
.iter()
|
||
.zip(snapshot.stub_object_generations.iter())
|
||
.any(|(obj, generation)| BuiltinSnapshot::gen(obj) != *generation);
|
||
let gen = |id: BuiltinId| BuiltinSnapshot::gen(world.get_by_id(id));
|
||
let snap = |id: BuiltinId| snapshot.generations[id as usize];
|
||
|
||
BuiltinDirtySet {
|
||
object: gen(BuiltinId::ObjectProto) != snap(BuiltinId::ObjectProto)
|
||
|| gen(BuiltinId::ObjectConstructor) != snap(BuiltinId::ObjectConstructor),
|
||
array: gen(BuiltinId::ArrayProto) != snap(BuiltinId::ArrayProto)
|
||
|| gen(BuiltinId::ArrayConstructor) != snap(BuiltinId::ArrayConstructor),
|
||
function: gen(BuiltinId::FunctionProto) != snap(BuiltinId::FunctionProto)
|
||
|| gen(BuiltinId::FunctionConstructor) != snap(BuiltinId::FunctionConstructor),
|
||
string: gen(BuiltinId::StringProto) != snap(BuiltinId::StringProto)
|
||
|| gen(BuiltinId::StringConstructor) != snap(BuiltinId::StringConstructor),
|
||
number: gen(BuiltinId::NumberProto) != snap(BuiltinId::NumberProto)
|
||
|| gen(BuiltinId::NumberConstructor) != snap(BuiltinId::NumberConstructor),
|
||
boolean: gen(BuiltinId::BooleanProto) != snap(BuiltinId::BooleanProto)
|
||
|| gen(BuiltinId::BooleanConstructor) != snap(BuiltinId::BooleanConstructor),
|
||
error_family: gen(BuiltinId::ErrorProto) != snap(BuiltinId::ErrorProto)
|
||
|| gen(BuiltinId::ErrorConstructor) != snap(BuiltinId::ErrorConstructor)
|
||
|| gen(BuiltinId::TypeErrorProto) != snap(BuiltinId::TypeErrorProto)
|
||
|| gen(BuiltinId::ReferenceErrorProto) != snap(BuiltinId::ReferenceErrorProto)
|
||
|| gen(BuiltinId::RangeErrorProto) != snap(BuiltinId::RangeErrorProto)
|
||
|| gen(BuiltinId::SyntaxErrorProto) != snap(BuiltinId::SyntaxErrorProto)
|
||
|| gen(BuiltinId::UriErrorProto) != snap(BuiltinId::UriErrorProto)
|
||
|| gen(BuiltinId::EvalErrorProto) != snap(BuiltinId::EvalErrorProto),
|
||
symbol_family: gen(BuiltinId::SymbolProto) != snap(BuiltinId::SymbolProto)
|
||
|| gen(BuiltinId::SymbolConstructor) != snap(BuiltinId::SymbolConstructor)
|
||
|| gen(BuiltinId::SymMatch) != snap(BuiltinId::SymMatch)
|
||
|| gen(BuiltinId::SymReplace) != snap(BuiltinId::SymReplace)
|
||
|| gen(BuiltinId::SymSearch) != snap(BuiltinId::SymSearch)
|
||
|| gen(BuiltinId::SymSplit) != snap(BuiltinId::SymSplit)
|
||
|| gen(BuiltinId::SymIterator) != snap(BuiltinId::SymIterator)
|
||
|| gen(BuiltinId::SymToPrimitive) != snap(BuiltinId::SymToPrimitive)
|
||
|| gen(BuiltinId::SymHasInstance) != snap(BuiltinId::SymHasInstance),
|
||
math: gen(BuiltinId::MathObject) != snap(BuiltinId::MathObject),
|
||
json: gen(BuiltinId::JsonObject) != snap(BuiltinId::JsonObject),
|
||
date: gen(BuiltinId::DateConstructor) != snap(BuiltinId::DateConstructor)
|
||
|| gen(BuiltinId::DateProto) != snap(BuiltinId::DateProto),
|
||
set: gen(BuiltinId::SetConstructor) != snap(BuiltinId::SetConstructor)
|
||
|| gen(BuiltinId::SetProto) != snap(BuiltinId::SetProto),
|
||
map: gen(BuiltinId::MapConstructor) != snap(BuiltinId::MapConstructor)
|
||
|| gen(BuiltinId::MapProto) != snap(BuiltinId::MapProto),
|
||
regexp: gen(BuiltinId::RegExpConstructor) != snap(BuiltinId::RegExpConstructor)
|
||
|| gen(BuiltinId::RegExpProto) != snap(BuiltinId::RegExpProto),
|
||
array_buffer: gen(BuiltinId::ArrayBufferConstructor) != snap(BuiltinId::ArrayBufferConstructor)
|
||
|| gen(BuiltinId::ArrayBufferProto) != snap(BuiltinId::ArrayBufferProto),
|
||
data_view: gen(BuiltinId::DataViewConstructor) != snap(BuiltinId::DataViewConstructor)
|
||
|| gen(BuiltinId::DataViewProto) != snap(BuiltinId::DataViewProto),
|
||
typed_array_family: gen(BuiltinId::TypedArrayProto) != snap(BuiltinId::TypedArrayProto)
|
||
|| gen(BuiltinId::Int8ArrayConstructor) != snap(BuiltinId::Int8ArrayConstructor)
|
||
|| gen(BuiltinId::Int8ArrayProto) != snap(BuiltinId::Int8ArrayProto)
|
||
|| gen(BuiltinId::Uint8ArrayConstructor) != snap(BuiltinId::Uint8ArrayConstructor)
|
||
|| gen(BuiltinId::Uint8ArrayProto) != snap(BuiltinId::Uint8ArrayProto)
|
||
|| gen(BuiltinId::Uint8ClampedArrayConstructor) != snap(BuiltinId::Uint8ClampedArrayConstructor)
|
||
|| gen(BuiltinId::Uint8ClampedArrayProto) != snap(BuiltinId::Uint8ClampedArrayProto)
|
||
|| gen(BuiltinId::Int16ArrayConstructor) != snap(BuiltinId::Int16ArrayConstructor)
|
||
|| gen(BuiltinId::Int16ArrayProto) != snap(BuiltinId::Int16ArrayProto)
|
||
|| gen(BuiltinId::Uint16ArrayConstructor) != snap(BuiltinId::Uint16ArrayConstructor)
|
||
|| gen(BuiltinId::Uint16ArrayProto) != snap(BuiltinId::Uint16ArrayProto)
|
||
|| gen(BuiltinId::Int32ArrayConstructor) != snap(BuiltinId::Int32ArrayConstructor)
|
||
|| gen(BuiltinId::Int32ArrayProto) != snap(BuiltinId::Int32ArrayProto)
|
||
|| gen(BuiltinId::Uint32ArrayConstructor) != snap(BuiltinId::Uint32ArrayConstructor)
|
||
|| gen(BuiltinId::Uint32ArrayProto) != snap(BuiltinId::Uint32ArrayProto)
|
||
|| gen(BuiltinId::Float32ArrayConstructor) != snap(BuiltinId::Float32ArrayConstructor)
|
||
|| gen(BuiltinId::Float32ArrayProto) != snap(BuiltinId::Float32ArrayProto)
|
||
|| gen(BuiltinId::Float64ArrayConstructor) != snap(BuiltinId::Float64ArrayConstructor)
|
||
|| gen(BuiltinId::Float64ArrayProto) != snap(BuiltinId::Float64ArrayProto)
|
||
|| gen(BuiltinId::BigInt64ArrayConstructor) != snap(BuiltinId::BigInt64ArrayConstructor)
|
||
|| gen(BuiltinId::BigInt64ArrayProto) != snap(BuiltinId::BigInt64ArrayProto)
|
||
|| gen(BuiltinId::BigUint64ArrayConstructor) != snap(BuiltinId::BigUint64ArrayConstructor)
|
||
|| gen(BuiltinId::BigUint64ArrayProto) != snap(BuiltinId::BigUint64ArrayProto),
|
||
stubs: world.stub_objects.len() != snapshot.stub_objects_len || stub_generations_dirty,
|
||
global: BuiltinSnapshot::gen(&self.global_object) != snapshot.global_object_generation,
|
||
}
|
||
}
|
||
|
||
/// 是否自上次快照以来存在任何污染。
|
||
pub fn is_dirty_since_snapshot(&self) -> bool {
|
||
self.dirty_since_snapshot().any()
|
||
}
|
||
|
||
/// 选择性重置：只重建被污染的对象（global 或相应 builtin 家族），并返回脏集合。
|
||
///
|
||
/// 相比全量重建，可保留未污染的内置对象指针与世代，减少隔离成本。
|
||
pub fn selective_reset(&mut self, core: &Arc<KernelCore>) -> BuiltinDirtySet {
|
||
let dirty = self.dirty_since_snapshot();
|
||
if dirty.global {
|
||
self.global_object = Self::new_global_object(core);
|
||
}
|
||
if dirty.any_builtin_dirty() {
|
||
self.builtin_world = Arc::new(BuiltinWorld::rebuild_with_dirty(
|
||
&self.builtin_world,
|
||
core.perm_interner.as_ref(),
|
||
core.shape_forge.as_ref(),
|
||
&dirty,
|
||
));
|
||
}
|
||
dirty
|
||
}
|
||
}
|
||
|
||
#[cfg(test)]
|
||
mod tests {
|
||
use super::*;
|
||
use crate::shape_forge::EMPTY_SHAPE_ID;
|
||
|
||
#[test]
|
||
fn test_kernel_new() {
|
||
let core = KernelCore::new(KernelConfig::minimal());
|
||
let (i1, _) = core.perm_interner().intern("test");
|
||
let (i2, _) = core.perm_interner().intern("test");
|
||
assert_eq!(i1, i2);
|
||
}
|
||
|
||
#[test]
|
||
fn test_kernel_builtins_accessible() {
|
||
let core = KernelCore::new(KernelConfig::minimal());
|
||
let session = KernelSession::new(&core);
|
||
assert!(!session.builtin_world().object_proto.is_function());
|
||
assert!(session.builtin_world().object_constructor.is_function());
|
||
}
|
||
|
||
#[test]
|
||
fn test_kernel_shape_forge() {
|
||
let core = KernelCore::new(KernelConfig::minimal());
|
||
assert!(core.shape_forge().get_shape(EMPTY_SHAPE_ID).is_some());
|
||
}
|
||
|
||
#[test]
|
||
fn test_kernel_string_forge() {
|
||
let core = KernelCore::new(KernelConfig::minimal());
|
||
let (i1, _) = core.perm_interner().intern("hello");
|
||
let (i2, _) = core.perm_interner().intern("hello");
|
||
assert_eq!(i1, i2);
|
||
}
|
||
|
||
#[test]
|
||
fn test_kernel_config_presets() {
|
||
assert_eq!(KernelConfig::minimal().max_pool_size, Some(8));
|
||
assert_eq!(KernelConfig::standard().max_pool_size, Some(32));
|
||
assert_eq!(KernelConfig::minimal().max_steps, None);
|
||
assert_eq!(KernelConfig::standard().max_steps, None);
|
||
assert_eq!(KernelConfig::full().max_steps, None);
|
||
assert_eq!(KernelConfig::minimal().log_levels, [Level::Off; SUBSYSTEM_COUNT]);
|
||
assert!(!KernelConfig::minimal().warmup_builtin_ic);
|
||
assert!(KernelConfig::full().warmup_builtin_ic);
|
||
assert_eq!(KernelConfig::full().max_pool_size, None);
|
||
}
|
||
|
||
#[test]
|
||
fn test_session_rebuild_shares_forges() {
|
||
let core = KernelCore::new(KernelConfig::minimal());
|
||
let (i1, _) = core.perm_interner().intern("hello");
|
||
let _s2 = KernelSession::new(&core);
|
||
let (i2, _) = core.perm_interner().intern("hello");
|
||
assert_eq!(i1, i2);
|
||
}
|
||
|
||
#[test]
|
||
fn snapshot_fresh_session_is_clean() {
|
||
let core = KernelCore::new(KernelConfig::minimal());
|
||
let session = KernelSession::new(&core);
|
||
let dirty = session.dirty_since_snapshot();
|
||
|
||
assert!(!dirty.any());
|
||
assert!(!dirty.any_builtin_dirty());
|
||
assert!(!session.is_dirty_since_snapshot());
|
||
}
|
||
|
||
#[test]
|
||
fn snapshot_detects_array_dirty() {
|
||
let core = KernelCore::new(KernelConfig::minimal());
|
||
let session = KernelSession::new(&core);
|
||
|
||
unsafe { &mut *(session.builtin_world.array_proto.as_ptr() as *mut JsObject) }.bump_generation();
|
||
let dirty = session.dirty_since_snapshot();
|
||
|
||
assert!(dirty.array);
|
||
assert!(dirty.any_builtin_dirty());
|
||
assert!(session.is_dirty_since_snapshot());
|
||
assert!(!dirty.global);
|
||
assert!(!dirty.object);
|
||
}
|
||
|
||
#[test]
|
||
fn snapshot_detects_global_dirty() {
|
||
let core = KernelCore::new(KernelConfig::minimal());
|
||
let session = KernelSession::new(&core);
|
||
|
||
unsafe { &mut *(session.global_object.as_ptr() as *mut JsObject) }.bump_generation();
|
||
let dirty = session.dirty_since_snapshot();
|
||
|
||
assert!(dirty.global);
|
||
assert!(dirty.any());
|
||
assert!(!dirty.any_builtin_dirty());
|
||
}
|
||
|
||
#[test]
|
||
fn snapshot_detects_stub_dirty() {
|
||
let core = KernelCore::new(KernelConfig::minimal());
|
||
let mut session = KernelSession::new(&core);
|
||
Arc::get_mut(&mut session.builtin_world)
|
||
.expect("fresh session owns its builtin world")
|
||
.stub_objects
|
||
.push(P::new(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null())));
|
||
session.record_snapshot();
|
||
|
||
Arc::get_mut(&mut session.builtin_world)
|
||
.expect("fresh session owns its builtin world")
|
||
.stub_objects
|
||
.push(P::new(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null())));
|
||
|
||
let dirty = session.dirty_since_snapshot();
|
||
assert!(dirty.stubs);
|
||
assert!(dirty.any_builtin_dirty());
|
||
assert!(!dirty.global);
|
||
}
|
||
|
||
#[test]
|
||
fn selective_reset_clean_keeps_builtin_world() {
|
||
let core = KernelCore::new(KernelConfig::minimal());
|
||
let mut session = KernelSession::new(&core);
|
||
let world_ptr = Arc::as_ptr(&session.builtin_world);
|
||
|
||
let dirty = session.selective_reset(&core);
|
||
|
||
assert!(!dirty.any());
|
||
assert!(std::ptr::eq(world_ptr, Arc::as_ptr(&session.builtin_world)));
|
||
}
|
||
|
||
#[test]
|
||
fn selective_reset_rebuilds_global_only_when_global_dirty() {
|
||
let core = KernelCore::new(KernelConfig::minimal());
|
||
let mut session = KernelSession::new(&core);
|
||
let world_ptr = Arc::as_ptr(&session.builtin_world);
|
||
let global_ptr = session.global_object.as_ptr();
|
||
|
||
unsafe { &mut *(session.global_object.as_ptr() as *mut JsObject) }.bump_generation();
|
||
let dirty = session.selective_reset(&core);
|
||
|
||
assert!(dirty.global);
|
||
assert!(!dirty.any_builtin_dirty());
|
||
assert!(std::ptr::eq(world_ptr, Arc::as_ptr(&session.builtin_world)));
|
||
assert!(!std::ptr::eq(global_ptr, session.global_object.as_ptr()));
|
||
}
|
||
|
||
#[test]
|
||
fn selective_reset_rebuilds_dirty_builtin_group() {
|
||
let core = KernelCore::new(KernelConfig::minimal());
|
||
let mut session = KernelSession::new(&core);
|
||
let object_proto = session.builtin_world.object_proto.as_ptr();
|
||
let array_proto = session.builtin_world.array_proto.as_ptr();
|
||
let world_ptr = Arc::as_ptr(&session.builtin_world);
|
||
|
||
unsafe { &mut *(session.builtin_world.array_proto.as_ptr() as *mut JsObject) }.bump_generation();
|
||
let dirty = session.selective_reset(&core);
|
||
|
||
assert!(dirty.array);
|
||
assert!(!std::ptr::eq(world_ptr, Arc::as_ptr(&session.builtin_world)));
|
||
assert!(std::ptr::eq(object_proto, session.builtin_world.object_proto.as_ptr()));
|
||
assert!(!std::ptr::eq(array_proto, session.builtin_world.array_proto.as_ptr()));
|
||
|
||
let ctor_proto = session.builtin_world.array_constructor.get_prop_at(0).as_js_object_ptr();
|
||
assert!(std::ptr::eq(ctor_proto, session.builtin_world.array_proto.as_ptr() as *mut JsObject));
|
||
}
|
||
}
|