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more general gc hooks?

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dcode
2019-03-21 10:44:14 +01:00
parent 658a380786
commit 3fc9f550ad
13 changed files with 200 additions and 181 deletions
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19
std/assembly/fixedarray.ts
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@ -1,4 +1,4 @@
import { ALLOCATE, REGISTER, MAX_BYTELENGTH, HEADER, HEADER_SIZE, LINK, UNLINK } from "./runtime";
import { ALLOCATE, REGISTER, MAX_BYTELENGTH, HEADER, HEADER_SIZE, RETAIN, RELEASE } from "./runtime";
// NOTE: DO NOT USE YET!
@ -38,10 +38,23 @@ export class FixedArray<T> {
if (isManaged<T>()) {
let offset = changetype<usize>(this) + (<usize>index << alignof<T>());
let oldValue = load<T>(offset);
store<T>(offset, LINK<T,this>(value, this));
UNLINK<T,this>(oldValue, this); // order is important
store<T>(offset, RETAIN<T,this>(value, this));
RELEASE<T,this>(oldValue, this); // order is important
} else {
store<T>(changetype<usize>(this) + (<usize>index << alignof<T>()), value);
}
}
// GC integration
@unsafe private __iter(fn: (ref: usize) => void): void {
if (isManaged<T>()) {
let cur = changetype<usize>(this);
let end = cur + changetype<HEADER>(changetype<usize>(this) - HEADER_SIZE).payloadSize;
while (cur < end) {
fn(load<usize>(cur));
cur += sizeof<usize>();
}
}
}
}