rc-js-util
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A collection of TS and C++ utilities to help writing performant and correct applications, achieved through strict typing and (removable) invariant checking.
77 lines • 2.96 kB
JavaScript
import { ESharedObjectOwnerKind, SharedObjectCleanup } from "../shared-memory/shared-object-cleanup.js";
import { DebugProtectedView } from "../../debug/debug-protected-view.js";
import { numberGetHexString } from "../../number/impl/number-get-hex-string.js";
import { _Debug } from "../../debug/_debug.js";
/**
* @public
*/
export class TypedArrayTuple {
constructor(wrapper, owner, ctor, pointerToData, numberId, byteSize) {
this.wrapper = wrapper;
this.resourceHandle = wrapper.lifecycleStrategy.createNode(owner);
this.ctor = ctor;
this.pointer = pointerToData;
this.byteSize = byteSize;
this.numberId = numberId;
this.impl = new TypedArrayTupleImpl(this, ctor, pointerToData, byteSize);
SharedObjectCleanup.registerCleanup(this, this.impl, new SharedObjectCleanup.Options("TypedArrayTuple", _BUILD.DEBUG ? new DebugProtectedView(`TypedArrayTuple - memory resize danger: don't hold reference to the DataView ${numberGetHexString(pointerToData)}`) : null, ESharedObjectOwnerKind.NotOwning));
}
getWrapper() {
return this.wrapper;
}
getSharedObjectHandle() {
return this;
}
getDataView() {
if (_BUILD.DEBUG) {
_Debug.assert(!this.resourceHandle.getIsDestroyed(), "use after free");
return this.wrapper.debugUtils.protectedViews
.getValue(this.resourceHandle)
.createProtectedView(this.impl.dataView);
}
else {
return this.impl.dataView;
}
}
getArray() {
if (_BUILD.DEBUG) {
_Debug.assert(!this.resourceHandle.getIsDestroyed(), "use after free");
return this.wrapper.debugUtils.protectedViews
.getValue(this.resourceHandle)
.createProtectedView(this.impl.array);
}
else {
return this.impl.array;
}
}
}
class TypedArrayTupleImpl extends SharedObjectCleanup {
constructor(sbv, ctor, pointer, byteSize) {
super(sbv, ESharedObjectOwnerKind.NotOwning);
this.ctor = ctor;
this.pointer = pointer;
this.byteSize = byteSize;
this.dataView = this.recreateDataView();
this.array = this.recreateArray();
this.wrapper.memoryResize.addListener(this);
}
onFree() {
super.onFree();
this.wrapper.memoryResize.removeListener(this);
}
onMemoryResize() {
if (this.wrapper == null) {
_BUILD.DEBUG && _Debug.error("object has been destroyed");
return;
}
this.dataView = this.recreateDataView();
this.array = this.recreateArray();
}
recreateDataView() {
return new DataView(this.wrapper.memory.buffer, this.pointer, this.byteSize);
}
recreateArray() {
return new this.ctor(this.wrapper.memory.buffer, this.pointer, this.byteSize);
}
}
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