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[ffi] Format samples and benchmarks with Dart 3.8

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Change-Id: I4f8e695ac648becc0de3466b6ba2058cbae7c408
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/422103
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Bob Nystrom <rnystrom@google.com>
Auto-Submit: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
This commit is contained in:
Daco Harkes
2025-04-11 07:53:45 -07:00
committed by Commit Queue
parent 546ddc645e
commit 0768228750
19 changed files with 697 additions and 601 deletions
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samples/ffi/async/sample_async_callback.dart
+37 -20
View File
@@ -28,8 +28,11 @@ main() async {
print("Dart: Setup.");
Expect.isTrue(NativeApi.majorVersion == 2);
Expect.isTrue(NativeApi.minorVersion >= 2);
final initializeApi = dl.lookupFunction<IntPtr Function(Pointer<Void>),
int Function(Pointer<Void>)>("InitDartApiDL");
final initializeApi = dl
.lookupFunction<
IntPtr Function(Pointer<Void>),
int Function(Pointer<Void>)
>("InitDartApiDL");
Expect.isTrue(initializeApi(NativeApi.initializeApiDLData) == 0);
final interactiveCppRequests = ReceivePort()..listen(requestExecuteCallback);
@@ -82,28 +85,42 @@ final callback2FP = Pointer.fromFunction<Void Function(IntPtr)>(callback2);
final dl = dlopenPlatformSpecific("ffi_test_functions");
final registerCallback1 = dl.lookupFunction<
Void Function(Int64 sendPort,
Pointer<NativeFunction<IntPtr Function(IntPtr)>> functionPointer),
void Function(int sendPort,
Pointer<NativeFunction<IntPtr Function(IntPtr)>> functionPointer)>(
'RegisterMyCallbackBlocking');
final registerCallback1 = dl
.lookupFunction<
Void Function(
Int64 sendPort,
Pointer<NativeFunction<IntPtr Function(IntPtr)>> functionPointer,
),
void Function(
int sendPort,
Pointer<NativeFunction<IntPtr Function(IntPtr)>> functionPointer,
)
>('RegisterMyCallbackBlocking');
final registerCallback2 = dl.lookupFunction<
Void Function(Int64 sendPort,
Pointer<NativeFunction<Void Function(IntPtr)>> functionPointer),
void Function(int sendPort,
Pointer<NativeFunction<Void Function(IntPtr)>> functionPointer)>(
'RegisterMyCallbackNonBlocking');
final registerCallback2 = dl
.lookupFunction<
Void Function(
Int64 sendPort,
Pointer<NativeFunction<Void Function(IntPtr)>> functionPointer,
),
void Function(
int sendPort,
Pointer<NativeFunction<Void Function(IntPtr)>> functionPointer,
)
>('RegisterMyCallbackNonBlocking');
final startWorkSimulator =
dl.lookupFunction<Void Function(), void Function()>('StartWorkSimulator');
final startWorkSimulator = dl.lookupFunction<Void Function(), void Function()>(
'StartWorkSimulator',
);
final stopWorkSimulator =
dl.lookupFunction<Void Function(), void Function()>('StopWorkSimulator');
final stopWorkSimulator = dl.lookupFunction<Void Function(), void Function()>(
'StopWorkSimulator',
);
final executeCallback = dl.lookupFunction<Void Function(Pointer<Work>),
void Function(Pointer<Work>)>('ExecuteCallback');
final executeCallback = dl
.lookupFunction<Void Function(Pointer<Work>), void Function(Pointer<Work>)>(
'ExecuteCallback',
);
final class Work extends Opaque {}
samples/ffi/async/sample_native_port_call.dart
+19 -10
View File
@@ -37,8 +37,11 @@ main() async {
print("Dart: Setup.");
Expect.isTrue(NativeApi.majorVersion == 2);
Expect.isTrue(NativeApi.minorVersion >= 2);
final initializeApi = dl.lookupFunction<IntPtr Function(Pointer<Void>),
int Function(Pointer<Void>)>("InitDartApiDL");
final initializeApi = dl
.lookupFunction<
IntPtr Function(Pointer<Void>),
int Function(Pointer<Void>)
>("InitDartApiDL");
Expect.isTrue(initializeApi(NativeApi.initializeApiDLData) == 0);
final interactiveCppRequests = ReceivePort()..listen(handleCppRequests);
@@ -111,8 +114,10 @@ void handleCppRequests(dynamic message) {
// the argument to the function.
final int argument = cppRequest.data[0];
final int result = myCallback1(argument);
final cppResponse =
CppResponse(cppRequest.pendingCall!, Uint8List.fromList([result]));
final cppResponse = CppResponse(
cppRequest.pendingCall!,
Uint8List.fromList([result]),
);
print('Dart: Responding: $cppResponse');
cppRequest.replyPort!.send(cppResponse.toCppMessage());
} else if (cppRequest.method == 'myCallback2') {
@@ -123,14 +128,18 @@ void handleCppRequests(dynamic message) {
final dl = dlopenPlatformSpecific("ffi_test_functions");
final registerSendPort = dl.lookupFunction<Void Function(Int64 sendPort),
void Function(int sendPort)>('RegisterSendPort');
final registerSendPort = dl
.lookupFunction<Void Function(Int64 sendPort), void Function(int sendPort)>(
'RegisterSendPort',
);
final startWorkSimulator2 =
dl.lookupFunction<Void Function(), void Function()>('StartWorkSimulator2');
final startWorkSimulator2 = dl.lookupFunction<Void Function(), void Function()>(
'StartWorkSimulator2',
);
final stopWorkSimulator2 =
dl.lookupFunction<Void Function(), void Function()>('StopWorkSimulator2');
final stopWorkSimulator2 = dl.lookupFunction<Void Function(), void Function()>(
'StopWorkSimulator2',
);
Future asyncSleep(int ms) {
return new Future.delayed(Duration(milliseconds: ms), () => true);
samples/ffi/resource_management/arena_isolate_shutdown_sample.dart
+24 -17
View File
@@ -16,11 +16,10 @@ import '../dylib_utils.dart';
void main() {
final receiveFromHelper = ReceivePort();
Isolate.spawn(helperIsolateMain, receiveFromHelper.sendPort)
.then((helperIsolate) {
helperIsolate.addOnExitListener(
receiveFromHelper.sendPort,
);
Isolate.spawn(helperIsolateMain, receiveFromHelper.sendPort).then((
helperIsolate,
) {
helperIsolate.addOnExitListener(receiveFromHelper.sendPort);
print("Main: Helper started.");
Pointer<SomeResource> resource = nullptr;
receiveFromHelper.listen((message) {
@@ -34,7 +33,8 @@ void main() {
Expect.isNull(message);
print("Main: Helper is shut down.");
print(
"Main: Trying to use resource after isolate that was supposed to free it was shut down.");
"Main: Trying to use resource after isolate that was supposed to free it was shut down.",
);
useResource(resource);
print("Main: Releasing resource manually.");
releaseResource(resource);
@@ -70,20 +70,27 @@ void helperIsolateMain(SendPort sendToMain) {
});
}
final ffiTestDynamicLibrary =
dlopenPlatformSpecific("ffi_test_dynamic_library");
final ffiTestDynamicLibrary = dlopenPlatformSpecific(
"ffi_test_dynamic_library",
);
final allocateResource = ffiTestDynamicLibrary.lookupFunction<
Pointer<SomeResource> Function(),
Pointer<SomeResource> Function()>("AllocateResource");
final allocateResource = ffiTestDynamicLibrary
.lookupFunction<
Pointer<SomeResource> Function(),
Pointer<SomeResource> Function()
>("AllocateResource");
final useResource = ffiTestDynamicLibrary.lookupFunction<
Void Function(Pointer<SomeResource>),
void Function(Pointer<SomeResource>)>("UseResource");
final useResource = ffiTestDynamicLibrary
.lookupFunction<
Void Function(Pointer<SomeResource>),
void Function(Pointer<SomeResource>)
>("UseResource");
final releaseResource = ffiTestDynamicLibrary.lookupFunction<
Void Function(Pointer<SomeResource>),
void Function(Pointer<SomeResource>)>("ReleaseResource");
final releaseResource = ffiTestDynamicLibrary
.lookupFunction<
Void Function(Pointer<SomeResource>),
void Function(Pointer<SomeResource>)
>("ReleaseResource");
/// Represents some opaque resource being managed by a library.
final class SomeResource extends Opaque {}
samples/ffi/resource_management/arena_sample.dart
+23 -14
View File
@@ -14,12 +14,15 @@ import 'utf8_helpers.dart';
import '../dylib_utils.dart';
main() async {
final ffiTestDynamicLibrary =
dlopenPlatformSpecific("ffi_test_dynamic_library");
final ffiTestDynamicLibrary = dlopenPlatformSpecific(
"ffi_test_dynamic_library",
);
final MemMove = ffiTestDynamicLibrary.lookupFunction<
Void Function(Pointer<Void>, Pointer<Void>, IntPtr),
void Function(Pointer<Void>, Pointer<Void>, int)>("MemMove");
final MemMove = ffiTestDynamicLibrary
.lookupFunction<
Void Function(Pointer<Void>, Pointer<Void>, IntPtr),
void Function(Pointer<Void>, Pointer<Void>, int)
>("MemMove");
// To ensure resources are freed, wrap them in a [using] call.
using((Arena arena) {
@@ -79,17 +82,23 @@ main() async {
print(p.contents());
});
final allocateResource = ffiTestDynamicLibrary.lookupFunction<
Pointer<SomeResource> Function(),
Pointer<SomeResource> Function()>("AllocateResource");
final allocateResource = ffiTestDynamicLibrary
.lookupFunction<
Pointer<SomeResource> Function(),
Pointer<SomeResource> Function()
>("AllocateResource");
final useResource = ffiTestDynamicLibrary.lookupFunction<
Void Function(Pointer<SomeResource>),
void Function(Pointer<SomeResource>)>("UseResource");
final useResource = ffiTestDynamicLibrary
.lookupFunction<
Void Function(Pointer<SomeResource>),
void Function(Pointer<SomeResource>)
>("UseResource");
final releaseResource = ffiTestDynamicLibrary.lookupFunction<
Void Function(Pointer<SomeResource>),
void Function(Pointer<SomeResource>)>("ReleaseResource");
final releaseResource = ffiTestDynamicLibrary
.lookupFunction<
Void Function(Pointer<SomeResource>),
void Function(Pointer<SomeResource>)
>("ReleaseResource");
// Using an FFI call to release a resource.
using((Arena arena) {
samples/ffi/resource_management/arena_zoned_sample.dart
+23 -14
View File
@@ -13,12 +13,15 @@ import 'utf8_helpers.dart';
import '../dylib_utils.dart';
main() async {
final ffiTestDynamicLibrary =
dlopenPlatformSpecific("ffi_test_dynamic_library");
final ffiTestDynamicLibrary = dlopenPlatformSpecific(
"ffi_test_dynamic_library",
);
final MemMove = ffiTestDynamicLibrary.lookupFunction<
Void Function(Pointer<Void>, Pointer<Void>, IntPtr),
void Function(Pointer<Void>, Pointer<Void>, int)>("MemMove");
final MemMove = ffiTestDynamicLibrary
.lookupFunction<
Void Function(Pointer<Void>, Pointer<Void>, IntPtr),
void Function(Pointer<Void>, Pointer<Void>, int)
>("MemMove");
// To ensure resources are freed, wrap them in a [withZoneArena] call.
withZoneArena(() {
@@ -77,17 +80,23 @@ main() async {
print(p.contents());
});
final allocateResource = ffiTestDynamicLibrary.lookupFunction<
Pointer<SomeResource> Function(),
Pointer<SomeResource> Function()>("AllocateResource");
final allocateResource = ffiTestDynamicLibrary
.lookupFunction<
Pointer<SomeResource> Function(),
Pointer<SomeResource> Function()
>("AllocateResource");
final useResource = ffiTestDynamicLibrary.lookupFunction<
Void Function(Pointer<SomeResource>),
void Function(Pointer<SomeResource>)>("UseResource");
final useResource = ffiTestDynamicLibrary
.lookupFunction<
Void Function(Pointer<SomeResource>),
void Function(Pointer<SomeResource>)
>("UseResource");
final releaseResource = ffiTestDynamicLibrary.lookupFunction<
Void Function(Pointer<SomeResource>),
void Function(Pointer<SomeResource>)>("ReleaseResource");
final releaseResource = ffiTestDynamicLibrary
.lookupFunction<
Void Function(Pointer<SomeResource>),
void Function(Pointer<SomeResource>)
>("ReleaseResource");
// Using an FFI call to release a resource.
withZoneArena(() {
samples/ffi/resource_management/unmanaged_sample.dart
+8 -5
View File
@@ -13,12 +13,15 @@ import 'utf8_helpers.dart';
import '../dylib_utils.dart';
main() {
final ffiTestDynamicLibrary =
dlopenPlatformSpecific("ffi_test_dynamic_library");
final ffiTestDynamicLibrary = dlopenPlatformSpecific(
"ffi_test_dynamic_library",
);
final memMove = ffiTestDynamicLibrary.lookupFunction<
Void Function(Pointer<Void>, Pointer<Void>, IntPtr),
void Function(Pointer<Void>, Pointer<Void>, int)>("MemMove");
final memMove = ffiTestDynamicLibrary
.lookupFunction<
Void Function(Pointer<Void>, Pointer<Void>, IntPtr),
void Function(Pointer<Void>, Pointer<Void>, int)
>("MemMove");
// To ensure resources are freed, call free manually.
//
samples/ffi/resource_management/utf8_helpers.dart
+3 -2
View File
@@ -46,7 +46,8 @@ extension Utf8Helpers on Pointer<Utf8> {
/// Returns a Dart string containing the decoded code points.
String contents() {
final int length = strlen;
return utf8.decode(Uint8List.view(
this.cast<Uint8>().asTypedList(length).buffer, 0, length));
return utf8.decode(
Uint8List.view(this.cast<Uint8>().asTypedList(length).buffer, 0, length),
);
}
}
samples/ffi/sample_ffi_functions.dart
+147 -65
View File
@@ -18,72 +18,121 @@ typedef NativeQuadOpUnsigned = Uint64 Function(Uint8, Uint16, Uint32, Uint64);
typedef NativeFunc4 = IntPtr Function(IntPtr);
typedef NativeDoubleUnaryOp = Double Function(Double);
typedef NativeFloatUnaryOp = Float Function(Float);
typedef NativeDecenaryOp = IntPtr Function(IntPtr, IntPtr, IntPtr, IntPtr,
IntPtr, IntPtr, IntPtr, IntPtr, IntPtr, IntPtr);
typedef NativeDecenaryOp2 = Int16 Function(
Int8, Int16, Int8, Int16, Int8, Int16, Int8, Int16, Int8, Int16);
typedef NativeDoubleDecenaryOp = Double Function(Double, Double, Double, Double,
Double, Double, Double, Double, Double, Double);
typedef NativeVigesimalOp = Double Function(
IntPtr,
Float,
IntPtr,
Double,
IntPtr,
Float,
IntPtr,
Double,
IntPtr,
Float,
IntPtr,
Double,
IntPtr,
Float,
IntPtr,
Double,
IntPtr,
Float,
IntPtr,
Double);
typedef NativeDecenaryOp =
IntPtr Function(
IntPtr,
IntPtr,
IntPtr,
IntPtr,
IntPtr,
IntPtr,
IntPtr,
IntPtr,
IntPtr,
IntPtr,
);
typedef NativeDecenaryOp2 =
Int16 Function(
Int8,
Int16,
Int8,
Int16,
Int8,
Int16,
Int8,
Int16,
Int8,
Int16,
);
typedef NativeDoubleDecenaryOp =
Double Function(
Double,
Double,
Double,
Double,
Double,
Double,
Double,
Double,
Double,
Double,
);
typedef NativeVigesimalOp =
Double Function(
IntPtr,
Float,
IntPtr,
Double,
IntPtr,
Float,
IntPtr,
Double,
IntPtr,
Float,
IntPtr,
Double,
IntPtr,
Float,
IntPtr,
Double,
IntPtr,
Float,
IntPtr,
Double,
);
typedef Int64PointerUnOp = Pointer<Int64> Function(Pointer<Int64>);
typedef QuadOp = int Function(int, int, int, int);
typedef DoubleUnaryOp = double Function(double);
typedef DecenaryOp = int Function(
int, int, int, int, int, int, int, int, int, int);
typedef DoubleDecenaryOp = double Function(double, double, double, double,
double, double, double, double, double, double);
typedef VigesimalOp = double Function(
int,
double,
int,
double,
int,
double,
int,
double,
int,
double,
int,
double,
int,
double,
int,
double,
int,
double,
int,
double);
typedef DecenaryOp =
int Function(int, int, int, int, int, int, int, int, int, int);
typedef DoubleDecenaryOp =
double Function(
double,
double,
double,
double,
double,
double,
double,
double,
double,
double,
);
typedef VigesimalOp =
double Function(
int,
double,
int,
double,
int,
double,
int,
double,
int,
double,
int,
double,
int,
double,
int,
double,
int,
double,
int,
double,
);
main() {
print('start main');
DynamicLibrary ffiTestFunctions =
dlopenPlatformSpecific("ffi_test_functions");
DynamicLibrary ffiTestFunctions = dlopenPlatformSpecific(
"ffi_test_functions",
);
{
// A int32 bin op.
BinaryOp sumPlus42 =
ffiTestFunctions.lookupFunction<NativeBinaryOp, BinaryOp>("SumPlus42");
BinaryOp sumPlus42 = ffiTestFunctions
.lookupFunction<NativeBinaryOp, BinaryOp>("SumPlus42");
var result = sumPlus42(3, 17);
print(result);
@@ -172,10 +221,22 @@ main() {
{
// Function with many double arguments.
DoubleDecenaryOp sumManyDoubles = ffiTestFunctions.lookupFunction<
NativeDoubleDecenaryOp, DoubleDecenaryOp>("SumManyDoubles");
var result =
sumManyDoubles(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0);
DoubleDecenaryOp sumManyDoubles = ffiTestFunctions
.lookupFunction<NativeDoubleDecenaryOp, DoubleDecenaryOp>(
"SumManyDoubles",
);
var result = sumManyDoubles(
1.0,
2.0,
3.0,
4.0,
5.0,
6.0,
7.0,
8.0,
9.0,
10.0,
);
print(result);
print(result.runtimeType);
}
@@ -184,8 +245,28 @@ main() {
// Function with many arguments, ints and doubles mixed.
VigesimalOp sumManyNumbers = ffiTestFunctions
.lookupFunction<NativeVigesimalOp, VigesimalOp>("SumManyNumbers");
var result = sumManyNumbers(1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9, 10.0, 11,
12.0, 13, 14.0, 15, 16.0, 17, 18.0, 19, 20.0);
var result = sumManyNumbers(
1,
2.0,
3,
4.0,
5,
6.0,
7,
8.0,
9,
10.0,
11,
12.0,
13,
14.0,
15,
16.0,
17,
18.0,
19,
20.0,
);
print(result);
print(result.runtimeType);
}
@@ -211,9 +292,10 @@ main() {
{
// Passing in nullptr for a pointer argument results in a nullptr in c.
Int64PointerUnOp nullableInt64ElemAt1 =
ffiTestFunctions.lookupFunction<Int64PointerUnOp, Int64PointerUnOp>(
"NullableInt64ElemAt1");
Int64PointerUnOp nullableInt64ElemAt1 = ffiTestFunctions
.lookupFunction<Int64PointerUnOp, Int64PointerUnOp>(
"NullableInt64ElemAt1",
);
Pointer<Int64> result = nullableInt64ElemAt1(nullptr);
print(result);
samples/ffi/sample_ffi_functions_callbacks.dart
+25 -18
View File
@@ -11,19 +11,22 @@ import 'dylib_utils.dart';
typedef NativeCoordinateOp = Pointer<Coordinate> Function(Pointer<Coordinate>);
typedef CoordinateTrice = Pointer<Coordinate> Function(
Pointer<NativeFunction<NativeCoordinateOp>>, Pointer<Coordinate>);
typedef CoordinateTrice =
Pointer<Coordinate> Function(
Pointer<NativeFunction<NativeCoordinateOp>>,
Pointer<Coordinate>,
);
typedef BinaryOp = int Function(int, int);
typedef NativeIntptrBinOp = IntPtr Function(IntPtr, IntPtr);
typedef NativeIntptrBinOpLookup = Pointer<NativeFunction<NativeIntptrBinOp>>
Function();
typedef NativeIntptrBinOpLookup =
Pointer<NativeFunction<NativeIntptrBinOp>> Function();
typedef NativeApplyTo42And74Type = IntPtr Function(
Pointer<NativeFunction<NativeIntptrBinOp>>);
typedef NativeApplyTo42And74Type =
IntPtr Function(Pointer<NativeFunction<NativeIntptrBinOp>>);
typedef ApplyTo42And74Type = int Function(
Pointer<NativeFunction<NativeIntptrBinOp>>);
typedef ApplyTo42And74Type =
int Function(Pointer<NativeFunction<NativeIntptrBinOp>>);
int myPlus(int a, int b) {
print("myPlus");
@@ -35,15 +38,17 @@ int myPlus(int a, int b) {
main() {
print('start main');
DynamicLibrary ffiTestFunctions =
dlopenPlatformSpecific("ffi_test_functions");
DynamicLibrary ffiTestFunctions = dlopenPlatformSpecific(
"ffi_test_functions",
);
{
// Pass a c pointer to a c function as an argument to a c function.
Pointer<NativeFunction<NativeCoordinateOp>> transposeCoordinatePointer =
ffiTestFunctions.lookup("TransposeCoordinate");
Pointer<NativeFunction<CoordinateTrice>> p2 =
ffiTestFunctions.lookup("CoordinateUnOpTrice");
Pointer<NativeFunction<CoordinateTrice>> p2 = ffiTestFunctions.lookup(
"CoordinateUnOpTrice",
);
CoordinateTrice coordinateUnOpTrice = p2.asFunction();
final c1 = calloc<Coordinate>()
..ref.x = 10.0
@@ -58,8 +63,8 @@ main() {
{
// Return a c pointer to a c function from a c function.
Pointer<NativeFunction<NativeIntptrBinOpLookup>> p14 =
ffiTestFunctions.lookup("IntptrAdditionClosure");
Pointer<NativeFunction<NativeIntptrBinOpLookup>> p14 = ffiTestFunctions
.lookup("IntptrAdditionClosure");
NativeIntptrBinOpLookup intptrAdditionClosure = p14.asFunction();
Pointer<NativeFunction<NativeIntptrBinOp>> intptrAdditionPointer =
@@ -69,12 +74,14 @@ main() {
}
{
Pointer<NativeFunction<NativeIntptrBinOp>> pointer =
Pointer.fromFunction(myPlus, 0);
Pointer<NativeFunction<NativeIntptrBinOp>> pointer = Pointer.fromFunction(
myPlus,
0,
);
print(pointer);
Pointer<NativeFunction<NativeApplyTo42And74Type>> p17 =
ffiTestFunctions.lookup("ApplyTo42And74");
Pointer<NativeFunction<NativeApplyTo42And74Type>> p17 = ffiTestFunctions
.lookup("ApplyTo42And74");
ApplyTo42And74Type applyTo42And74 = p17.asFunction();
int result = applyTo42And74(pointer);
samples/ffi/sample_ffi_functions_callbacks_closures.dart
+16 -11
View File
@@ -34,9 +34,10 @@ void main() {
final testLibrary = dlopenPlatformSpecific("ffi_test_functions");
final registerClosureCallback =
testLibrary.lookupFunction<Void Function(Handle), void Function(Object)>(
"RegisterClosureCallback");
final registerClosureCallback = testLibrary
.lookupFunction<Void Function(Handle), void Function(Object)>(
"RegisterClosureCallback",
);
final invokeClosureCallback = testLibrary
.lookupFunction<Void Function(), void Function()>("InvokeClosureCallback");
@@ -49,19 +50,23 @@ void doClosureCallback(Object callback) {
callback_as_function();
}
final closureCallbackPointer =
Pointer.fromFunction<Void Function(Handle)>(doClosureCallback);
final closureCallbackPointer = Pointer.fromFunction<Void Function(Handle)>(
doClosureCallback,
);
void doDynamicLinking() {
Expect.isTrue(NativeApi.majorVersion == 2);
Expect.isTrue(NativeApi.minorVersion >= 2);
final initializeApi = testLibrary.lookupFunction<
IntPtr Function(Pointer<Void>),
int Function(Pointer<Void>)>("InitDartApiDL");
final initializeApi = testLibrary
.lookupFunction<
IntPtr Function(Pointer<Void>),
int Function(Pointer<Void>)
>("InitDartApiDL");
Expect.isTrue(initializeApi(NativeApi.initializeApiDLData) == 0);
final registerClosureCallback = testLibrary.lookupFunction<
Void Function(Pointer),
void Function(Pointer)>("RegisterClosureCallbackFP");
final registerClosureCallback = testLibrary
.lookupFunction<Void Function(Pointer), void Function(Pointer)>(
"RegisterClosureCallbackFP",
);
registerClosureCallback(closureCallbackPointer);
}
samples/ffi/sample_ffi_functions_structs.dart
+9 -6
View File
@@ -14,13 +14,15 @@ typedef NativeCoordinateOp = Pointer<Coordinate> Function(Pointer<Coordinate>);
main() {
print('start main');
DynamicLibrary ffiTestFunctions =
dlopenPlatformSpecific("ffi_test_functions");
DynamicLibrary ffiTestFunctions = dlopenPlatformSpecific(
"ffi_test_functions",
);
{
// Pass a struct to a c function and get a struct as return value.
Pointer<NativeFunction<NativeCoordinateOp>> p1 =
ffiTestFunctions.lookup("TransposeCoordinate");
Pointer<NativeFunction<NativeCoordinateOp>> p1 = ffiTestFunctions.lookup(
"TransposeCoordinate",
);
NativeCoordinateOp f1 = p1.asFunction();
final c1 = calloc<Coordinate>()
@@ -45,8 +47,9 @@ main() {
{
// Pass an array of structs to a c function.
Pointer<NativeFunction<NativeCoordinateOp>> p1 =
ffiTestFunctions.lookup("CoordinateElemAt1");
Pointer<NativeFunction<NativeCoordinateOp>> p1 = ffiTestFunctions.lookup(
"CoordinateElemAt1",
);
NativeCoordinateOp f1 = p1.asFunction();
Pointer<Coordinate> c1 = calloc<Coordinate>(3);