dart-sdk/tests/ffi/vmspecific_dynamic_library_test.dart
Daco Harkes c04673f44b [vm/ffi] Support DynamicLibrary.process() on Windows
Support looking up a symbol in the process on Windows by using the
Windows Process Status API to iterate over all loaded Modules.

TEST=tests/ffi/has_symbol_test.dart
TEST=tests/ffi/vmspecific_dynamic_library_test.dart

Change-Id: I1029f1c7dae9a193b662d942388affb681842c90
Cq-Include-Trybots: luci.dart.try:vm-kernel-win-debug-x64c-try,vm-kernel-win-debug-x64-try,vm-kernel-nnbd-win-debug-x64-try,vm-kernel-precomp-win-debug-x64c-try,dart-sdk-win-try,vm-kernel-win-release-x64-try,vm-kernel-win-release-ia32-try,vm-kernel-precomp-win-product-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/260760
Commit-Queue: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Tess Strickland <sstrickl@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
2022-09-27 08:42:03 +00:00

88 lines
2.6 KiB
Dart

// 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 dynamic library loading.
//
// SharedObjects=ffi_test_dynamic_library ffi_test_functions
import 'dart:io';
import 'dart:ffi';
import 'package:expect/expect.dart';
import 'dylib_utils.dart';
void main() {
testOpen();
testOpenError();
testLookup();
testLookupError();
testToString();
testEquality();
testHandle();
}
void testOpen() {
DynamicLibrary l = dlopenPlatformSpecific("ffi_test_dynamic_library");
}
void testOpenError() {
Expect.throws(
() => dlopenPlatformSpecific("doesnotexistforsurelibrary123409876"));
}
typedef NativeDoubleUnOp = Double Function(Double);
typedef DoubleUnOp = double Function(double);
void testLookup() {
final l = dlopenPlatformSpecific("ffi_test_dynamic_library");
var timesFour = l.lookupFunction<NativeDoubleUnOp, DoubleUnOp>("timesFour");
Expect.approxEquals(12.0, timesFour(3));
final p = DynamicLibrary.process();
if (Platform.isWindows) {
Expect.isTrue(p.lookup<Void>("HeapAlloc") != nullptr);
Expect.isTrue(p.lookup<Void>("CoTaskMemAlloc") != nullptr);
} else {
// Lookup a symbol from 'libc' since it's loaded with global visibility.
Expect.isTrue(p.lookup<Void>("strcmp") != nullptr);
}
final e = DynamicLibrary.executable();
Expect.isTrue(e.lookup("Dart_Invoke") != nullptr);
}
void testLookupError() {
DynamicLibrary l = dlopenPlatformSpecific("ffi_test_dynamic_library");
Expect.throws(() => l.lookupFunction<NativeDoubleUnOp, DoubleUnOp>(
"functionnamethatdoesnotexistforsure749237593845"));
}
void testToString() {
DynamicLibrary l = dlopenPlatformSpecific("ffi_test_dynamic_library");
Expect.stringEquals(
"DynamicLibrary: handle=0x", l.toString().substring(0, 25));
}
void testEquality() {
DynamicLibrary l = dlopenPlatformSpecific("ffi_test_dynamic_library");
DynamicLibrary l2 = dlopenPlatformSpecific("ffi_test_dynamic_library");
Expect.equals(l, l2);
Expect.equals(l.hashCode, l2.hashCode);
DynamicLibrary l3 = dlopenPlatformSpecific("ffi_test_functions");
Expect.notEquals(l, l3);
}
void testHandle() {
DynamicLibrary l = dlopenPlatformSpecific("ffi_test_dynamic_library");
DynamicLibrary l2 = dlopenPlatformSpecific("ffi_test_dynamic_library");
Pointer<Void> h = l.handle;
Pointer<Void> h2 = l2.handle;
Expect.equals(h, h2);
DynamicLibrary l3 = dlopenPlatformSpecific("ffi_test_functions");
Pointer<Void> h3 = l3.handle;
Expect.notEquals(h, h3);
}