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nullsafety

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This commit is contained in:
ekibun
2021-02-22 16:15:46 +08:00
parent 8fb26b20af
commit e87f50956a
9 changed files with 176 additions and 140 deletions
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72
lib/src/ffi.dart
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@@ -10,6 +10,16 @@ import 'dart:io';
import 'dart:isolate';
import 'package:ffi/ffi.dart';
extension ListFirstWhere<T> on Iterable<T> {
T? firstWhereOrNull(bool Function(T) test) {
try {
return firstWhere(test);
} on StateError {
return null;
}
}
}
abstract class JSRef {
int _refCount = 0;
void dup() {
@@ -34,7 +44,7 @@ abstract class JSRef {
static void _callRecursive(
dynamic obj,
void Function(JSRef) cb, [
Set cache,
Set? cache,
]) {
if (obj == null) return;
if (cache == null) cache = Set();
@@ -155,24 +165,26 @@ final Pointer<JSRuntime> Function(
.asFunction();
class _RuntimeOpaque {
_JSChannel _channel;
final _JSChannel _channel;
List<JSRef> _ref = [];
ReceivePort _port;
int _dartObjectClassId;
get dartObjectClassId => _dartObjectClassId;
final ReceivePort _port;
int? _dartObjectClassId;
_RuntimeOpaque(this._channel, this._port);
int? get dartObjectClassId => _dartObjectClassId;
void addRef(JSRef ref) => _ref.add(ref);
bool removeRef(JSRef ref) => _ref.remove(ref);
JSRef getRef(bool Function(JSRef ref) test) {
return _ref.firstWhere(test, orElse: () => null);
JSRef? getRef(bool Function(JSRef ref) test) {
return _ref.firstWhereOrNull(test);
}
}
final Map<Pointer<JSRuntime>, _RuntimeOpaque> runtimeOpaques = Map();
Pointer<JSValue> channelDispacher(
Pointer<JSValue>? channelDispacher(
Pointer<JSContext> ctx,
int type,
Pointer<JSValue> argv,
@@ -188,9 +200,7 @@ Pointer<JSRuntime> jsNewRuntime(
ReceivePort port,
) {
final rt = _jsNewRuntime(Pointer.fromFunction(channelDispacher));
runtimeOpaques[rt] = _RuntimeOpaque()
.._channel = callback
.._port = port;
runtimeOpaques[rt] = _RuntimeOpaque(callback, port);
return rt;
}
@@ -222,21 +232,22 @@ void jsFreeRuntime(
Pointer<JSRuntime> rt,
) {
final referenceleak = <String>[];
while (true) {
final ref = runtimeOpaques[rt]
?._ref
?.firstWhere((ref) => ref is JSRefLeakable, orElse: () => null);
if (ref == null) break;
ref.destroy();
runtimeOpaques[rt]?._ref?.remove(ref);
}
while (0 < runtimeOpaques[rt]?._ref?.length ?? 0) {
final ref = runtimeOpaques[rt]?._ref?.first;
final objStrs = ref.toString().split('\n');
final objStr = objStrs.length > 0 ? objStrs[0] + " ..." : objStrs[0];
referenceleak.add(
" ${identityHashCode(ref)}\t${ref._refCount + 1}\t${ref.runtimeType.toString()}\t$objStr");
ref.destroy();
final opaque = runtimeOpaques[rt];
if (opaque != null) {
while (true) {
final ref = opaque._ref.firstWhereOrNull((ref) => ref is JSRefLeakable);
if (ref == null) break;
ref.destroy();
runtimeOpaques[rt]?._ref.remove(ref);
}
while (opaque._ref.isNotEmpty) {
final ref = opaque._ref.first;
final objStrs = ref.toString().split('\n');
final objStr = objStrs.length > 0 ? objStrs[0] + " ..." : objStrs[0];
referenceleak.add(
" ${identityHashCode(ref)}\t${ref._refCount + 1}\t${ref.runtimeType.toString()}\t$objStr");
ref.destroy();
}
}
_jsFreeRuntime(rt);
if (referenceleak.length > 0) {
@@ -335,7 +346,7 @@ Pointer<JSValue> jsEval(
);
malloc.free(utf8input);
malloc.free(utf8filename);
runtimeOpaques[jsGetRuntime(ctx)]._port.sendPort.send(#eval);
runtimeOpaques[jsGetRuntime(ctx)]?._port.sendPort.send(#eval);
return val;
}
@@ -915,14 +926,11 @@ Pointer<JSValue> jsCall(
setJSValueList(jsArgs, i, jsArg);
}
final func1 = jsDupValue(ctx, funcObj);
final _thisObj = thisObj ?? jsUNDEFINED();
final _thisObj = thisObj;
final jsRet = _jsCall(ctx, funcObj, _thisObj, argv.length, jsArgs);
if (thisObj == null) {
jsFreeValue(ctx, _thisObj);
}
jsFreeValue(ctx, func1);
malloc.free(jsArgs);
runtimeOpaques[jsGetRuntime(ctx)]._port.sendPort.send(#call);
runtimeOpaques[jsGetRuntime(ctx)]?._port.sendPort.send(#call);
return jsRet;
}