Samir Jindel
dd306dd36f
This is based on https://dart-review.googlesource.com/c/sdk/+/100583/2, but instead of relying on private symbols, we expose an API function which is a no-op outside specific tests. Fixes https://github.com/dart-lang/sdk/issues/36723 Change-Id: Ieb78caa2d14956a2b5f985533b9b73e941d2d9c9 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/103801 Commit-Queue: Samir Jindel <sjindel@google.com> Reviewed-by: Ryan Macnak <rmacnak@google.com> Reviewed-by: Daco Harkes <dacoharkes@google.com>
101 lines
3.2 KiB
Dart
101 lines
3.2 KiB
Dart
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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//
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// VMOptions=--deterministic --optimization-counter-threshold=500 --enable-testing-pragmas
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// VMOptions=--deterministic --optimization-counter-threshold=-1 --enable-testing-pragmas
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//
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// Dart test program for stress-testing boxing and GC in return paths from FFI
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// trampolines.
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//
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// NOTE: This test does not produce useful stderr when it fails because the
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// stderr is redirected to a file for reflection.
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//
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// SharedObjects=ffi_test_functions
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import 'dart:ffi' as ffi;
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import 'dylib_utils.dart';
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import "package:expect/expect.dart";
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main() async {
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testBoxInt64();
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testBoxInt32();
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testBoxDouble();
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testBoxPointer();
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testAllocateInNative();
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testAllocateInDart();
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}
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ffi.DynamicLibrary ffiTestFunctions =
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dlopenPlatformSpecific("ffi_test_functions");
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typedef NativeNullaryOp64 = ffi.Int64 Function();
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typedef NativeNullaryOp32 = ffi.Int32 Function();
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typedef NativeNullaryOpDouble = ffi.Double Function();
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typedef NativeNullaryOpPtr = ffi.Pointer<ffi.Void> Function();
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typedef NativeNullaryOp = ffi.Void Function();
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typedef NativeUnaryOp = ffi.Void Function(ffi.Uint64);
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typedef NullaryOp = int Function();
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typedef NullaryOpDbl = double Function();
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typedef NullaryOpPtr = ffi.Pointer<ffi.Void> Function();
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typedef UnaryOp = void Function(int);
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typedef NullaryOpVoid = void Function();
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//// These functions return values that require boxing into different types.
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final minInt64 =
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ffiTestFunctions.lookupFunction<NativeNullaryOp64, NullaryOp>("MinInt64");
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// Forces boxing into Mint on all platforms.
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void testBoxInt64() {
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Expect.equals(0x8000000000000000, minInt64());
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}
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NullaryOp minInt32 =
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ffiTestFunctions.lookupFunction<NativeNullaryOp32, NullaryOp>("MinInt32");
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// Forces boxing into Mint on 32-bit platforms only.
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void testBoxInt32() {
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Expect.equals(-0x80000000, minInt32());
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}
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final smallDouble = ffiTestFunctions
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.lookupFunction<NativeNullaryOpDouble, NullaryOpDbl>("SmallDouble");
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// Forces boxing into Double.
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void testBoxDouble() {
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Expect.equals(0x80000000 * -1.0, smallDouble());
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}
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final largePointer = ffiTestFunctions
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.lookupFunction<NativeNullaryOpPtr, NullaryOpPtr>("LargePointer");
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// Forces boxing into ffi.Pointer and ffi.Mint.
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void testBoxPointer() {
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ffi.Pointer pointer = largePointer();
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if (pointer != null) {
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if (ffi.sizeOf<ffi.Pointer>() == 4) {
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Expect.equals(0x82000000, pointer.address);
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} else {
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Expect.equals(0x8100000082000000, pointer.address);
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}
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}
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}
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final triggerGc = ffiTestFunctions
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.lookupFunction<NativeNullaryOp, NullaryOpVoid>("TriggerGC");
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// Test GC in the FFI call path by calling a C function which triggers GC
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// directly.
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void testAllocateInNative() => triggerGc();
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@pragma("vm:entry-point", "call")
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void testAllocationsInDartHelper() => triggerGc();
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final allocateThroughDart = ffiTestFunctions
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.lookupFunction<NativeNullaryOp, NullaryOpVoid>("AllocateThroughDart");
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// Test GC in the FFI call path by calling a C function which allocates by
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// calling back into Dart ('testAllocationsInDartHelper').
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void testAllocateInDart() => allocateThroughDart();
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