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if that's what's necessary

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This commit is contained in:
dcode
2019-03-14 06:09:49 +01:00
parent a5e14a0eaa
commit 84ddd97761
25 changed files with 1845 additions and 769 deletions
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33
std/assembly/collector/itcm.ts
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@ -1,11 +1,13 @@
// Largely based on Bach Le's μgc, see: https://github.com/bullno1/ugc
// @ts-ignore: decorator
@inline const TRACE = false;
@inline
const TRACE = false;
/** Size of a managed object header. */
// @ts-ignore: decorator
@inline export const HEADER_SIZE: usize = (offsetof<ManagedObject>() + AL_MASK) & ~AL_MASK;
@inline
export const HEADER_SIZE: usize = (offsetof<ManagedObject>() + AL_MASK) & ~AL_MASK;
import { AL_MASK, MAX_SIZE_32 } from "../util/allocator";
import { gc } from "../gc";
@ -148,8 +150,7 @@ function step(): void {
if (obj !== toSpace) {
if (TRACE) trace("gc~step/MARK iterate", 1, objToRef(obj));
iter = obj;
// @ts-ignore: cast
obj.color = <i32>!white;
obj.color = i32(!white);
// if (TRACE) {
// trace(" next/prev/hook", 3,
// changetype<usize>(obj.next),
@ -166,8 +167,7 @@ function step(): void {
let from = fromSpace;
fromSpace = toSpace;
toSpace = from;
// @ts-ignore: cast
white = <i32>!white;
white = i32(!white);
iter = from.next;
state = State.SWEEP;
if (TRACE) trace("gc~state = SWEEP");
@ -193,17 +193,20 @@ function step(): void {
}
// @ts-ignore: decorator
@inline function refToObj(ref: usize): ManagedObject {
@inline
function refToObj(ref: usize): ManagedObject {
return changetype<ManagedObject>(ref - HEADER_SIZE);
}
// @ts-ignore: decorator
@inline function objToRef(obj: ManagedObject): usize {
@inline
function objToRef(obj: ManagedObject): usize {
return changetype<usize>(obj) + HEADER_SIZE;
}
// @ts-ignore: decorator
@global @unsafe export function __gc_allocate( // TODO: make this register only / reuse header
@global @unsafe
export function __gc_allocate( // TODO: make this register only / reuse header
size: usize,
markFn: (ref: usize) => void
): usize {
@ -218,15 +221,16 @@ function step(): void {
}
// @ts-ignore: decorator
@global @unsafe export function __gc_link(parentRef: usize, childRef: usize): void {
@global @unsafe
export function __gc_link(parentRef: usize, childRef: usize): void {
if (TRACE) trace("gc.link", 2, parentRef, childRef);
var parent = refToObj(parentRef);
// @ts-ignore: cast
if (parent.color == <i32>!white && refToObj(childRef).color == white) parent.makeGray();
if (parent.color == i32(!white) && refToObj(childRef).color == white) parent.makeGray();
}
// @ts-ignore: decorator
@global @unsafe export function __gc_mark(ref: usize): void {
@global @unsafe
export function __gc_mark(ref: usize): void {
if (TRACE) trace("gc.mark", 1, ref);
if (ref) {
let obj = refToObj(ref);
@ -235,7 +239,8 @@ function step(): void {
}
// @ts-ignore: decorator
@global @unsafe export function __gc_collect(): void {
@global @unsafe
export function __gc_collect(): void {
if (TRACE) trace("gc.collect");
// begin collecting if not yet collecting
switch (state) {