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// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
//
// Dart test program for testing dart:ffi struct pointers.
//
// VMOptions=--deterministic --enable-testing-pragmas
//
// SharedObjects=ffi_test_functions
import 'dart:ffi';
import 'dylib_utils.dart';
import 'ffi_test_helpers.dart';
/// Estimate of how many allocations functions in `functionsToTest` do at most.
const gcAfterNAllocationsMax = 10;
void main() {
for (Function() f in functionsToTest) {
f(); // Ensure code is compiled.
for (int n = 1; n <= gcAfterNAllocationsMax; n++) {
collectOnNthAllocation(n);
f();
}
}
}
final List<Function()> functionsToTest = [
// Pointer operations.
() => highAddressPointer.cast<Double>(),
() => Pointer.fromAddress(highAddressPointer.address),
() => highAddressPointer.address,
() => highAddressPointer.elementAt(1),
() => highAddressPointer.offsetBy(1),
() => highAddressPointer.asTypedList(1),
// DynamicLibrary operations.
doDlopen,
doDlsym, // Includes `asFunction`.
() => ffiTestFunctions.handle,
// Trampolines.
() => sumManyIntsOdd(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, mint64bit),
() => sumManyDoubles(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0),
minInt64,
minInt32,
smallDouble,
largePointer,
// Callback trampolines.
//
// In regress_37511_callbacks_test.dart because callbacks are not supported
// in AOT yet.
];
// Pointer operation helpers.
const mint32bit = 0xFFFFFFF0;
const mint64bit = 0x7FFFFFFFFFFFFFF0;
final int highAddress = sizeOf<IntPtr>() == 4 ? mint32bit : mint64bit;
final Pointer<Int64> highAddressPointer = Pointer.fromAddress(highAddress);
// Dynamic library operation helpers.
final doDlopen = () => dlopenPlatformSpecific("ffi_test_functions");
final doDlsym = () => ffiTestFunctions
.lookupFunction<NativeNullaryOp, NullaryOpVoid>("TriggerGC");
// Trampoline helpers.
typedef NativeUndenaryOp = IntPtr Function(IntPtr, IntPtr, IntPtr, IntPtr,
IntPtr, IntPtr, IntPtr, IntPtr, IntPtr, IntPtr, IntPtr);
typedef UndenaryOp = int Function(
int, int, int, int, int, int, int, int, int, int, int);
final UndenaryOp sumManyIntsOdd = ffiTestFunctions
.lookupFunction<NativeUndenaryOp, UndenaryOp>("SumManyIntsOdd");
typedef NativeDoubleDecenaryOp = Double Function(Double, Double, Double, Double,
Double, Double, Double, Double, Double, Double);
typedef DoubleDecenaryOp = double Function(double, double, double, double,
double, double, double, double, double, double);
final DoubleDecenaryOp sumManyDoubles = ffiTestFunctions
.lookupFunction<NativeDoubleDecenaryOp, DoubleDecenaryOp>("SumManyDoubles");
typedef NativeNullaryOp64 = Int64 Function();
typedef NativeNullaryOp32 = Int32 Function();
typedef NativeNullaryOpDouble = Double Function();
typedef NullaryOpPtr = Pointer<Void> Function();
typedef NullaryOp = int Function();
typedef NullaryOpDbl = double Function();
final minInt64 =
ffiTestFunctions.lookupFunction<NativeNullaryOp64, NullaryOp>("MinInt64");
final minInt32 =
ffiTestFunctions.lookupFunction<NativeNullaryOp32, NullaryOp>("MinInt32");
final smallDouble = ffiTestFunctions
.lookupFunction<NativeNullaryOpDouble, NullaryOpDbl>("SmallDouble");
final largePointer =
ffiTestFunctions.lookupFunction<NullaryOpPtr, NullaryOpPtr>("LargePointer");