[vm/ffi] Expose a subset of dart_(native_)api.h for dynamic linking.
This CL introduces dart_api_dl.h which exposes a subset of dart_api.h
and dart_native_api.h for dynamic linking at runtime through the FFI.
Dynamic linking is done through including dart_api_dl.cc in a shared
library and passing NativeApi.initializeApiDLData to the init function.
This CL also includes Native API versioning to deal with possible
version skew between native api version against which native libraries
are compiled and the version in the DartVM the code is run on.
The subset of symbols in the CL includes handle related symbols, error
related symbols, handle scope symbols, and native port sumbols.
Design: http://go/dart-ffi-expose-dart-api
Closes: https://github.com/dart-lang/sdk/issues/40607
Closes: https://github.com/dart-lang/sdk/issues/36858
Closes: https://github.com/dart-lang/sdk/issues/41319
Closes: https://github.com/flutter/flutter/issues/46887
Closes: https://github.com/flutter/flutter/issues/47061
Misc:
Closes: https://github.com/dart-lang/sdk/issues/42260
Change-Id: I9e557808dbc99b341f23964cbddbb05f26d7a6c5
Cq-Include-Trybots: luci.dart.try:vm-ffi-android-debug-arm-try,vm-ffi-android-debug-arm64-try,app-kernel-linux-debug-x64-try,vm-kernel-linux-debug-ia32-try,vm-kernel-win-debug-x64-try,vm-kernel-win-debug-ia32-try,vm-kernel-precomp-linux-debug-x64-try,vm-dartkb-linux-release-x64-abi-try,vm-kernel-precomp-android-release-arm64-try,vm-kernel-asan-linux-release-x64-try,vm-kernel-msan-linux-release-x64-try,vm-kernel-precomp-msan-linux-release-x64-try,vm-kernel-linux-release-simarm-try,vm-kernel-linux-release-simarm64-try,vm-kernel-precomp-android-release-arm_x64-try,vm-kernel-precomp-obfuscate-linux-release-x64-try,dart-sdk-linux-try,analyzer-analysis-server-linux-try,analyzer-linux-release-try,front-end-linux-release-x64-try,vm-kernel-precomp-win-release-x64-try,vm-kernel-mac-debug-x64-try,vm-precomp-ffi-qemu-linux-release-arm-try,vm-kernel-nnbd-linux-debug-x64-try,analyzer-nnbd-linux-release-try,front-end-nnbd-linux-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/145592
Commit-Queue: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
2020-06-18 07:30:43 +00:00
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// Copyright (c) 2020, 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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import 'dart:ffi';
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import 'package:expect/expect.dart';
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import 'dylib_utils.dart';
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void main() {
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print('start main');
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doDynamicLinking();
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int counter = 0;
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void closure() {
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counter++;
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}
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// C holds on to this closure through a `Dart_PersistenHandle`.
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registerClosureCallback(closure);
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// Some time later this closure can be invoked.
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invokeClosureCallback();
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Expect.equals(1, counter);
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// When C is done it needs to stop holding on to the closure such that the
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// Dart GC can collect the closure.
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releaseClosureCallback();
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print('end main');
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}
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final testLibrary = dlopenPlatformSpecific("ffi_test_functions");
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final registerClosureCallback =
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testLibrary.lookupFunction<Void Function(Handle), void Function(Object)>(
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"RegisterClosureCallback");
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final invokeClosureCallback = testLibrary
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.lookupFunction<Void Function(), void Function()>("InvokeClosureCallback");
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final releaseClosureCallback = testLibrary
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.lookupFunction<Void Function(), void Function()>("ReleaseClosureCallback");
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void doClosureCallback(Object callback) {
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final callback_as_function = callback as void Function();
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callback_as_function();
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}
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final closureCallbackPointer =
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Pointer.fromFunction<Void Function(Handle)>(doClosureCallback);
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void doDynamicLinking() {
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[vm] Native API: Make Dart_NewWeakPersistentHandle not auto delete
Changes Dart_NewWeakPersistentHandle to no longer auto delete the
weak persistent handle.
Changes the signatures of WeakPersistentHandleFinalizers to no longer
have access to the handle.
Flutter PR: https://github.com/flutter/engine/pull/19843
g3 presubmit: cl/318028238
Issue: https://github.com/dart-lang/sdk/issues/42312
TEST=runtime/vm/dart_api_impl_test.cc
Change-Id: I3f77db9954d9486759f903b78c03a494f73c68ba
Cq-Include-Trybots:dart/try:vm-ffi-android-debug-arm-try,vm-ffi-android-debug-arm64-try,app-kernel-linux-debug-x64-try,vm-kernel-linux-debug-ia32-try,vm-kernel-win-debug-x64-try,vm-kernel-win-debug-ia32-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-android-release-arm64-try,vm-kernel-asan-linux-release-x64-try,vm-kernel-msan-linux-release-x64-try,vm-kernel-precomp-msan-linux-release-x64-try,vm-kernel-linux-release-simarm-try,vm-kernel-linux-release-simarm64-try,vm-kernel-precomp-android-release-arm_x64-try,vm-kernel-precomp-obfuscate-linux-release-x64-try,dart-sdk-linux-try,analyzer-analysis-server-linux-try,analyzer-linux-release-try,front-end-linux-release-x64-try,vm-kernel-precomp-win-release-x64-try,vm-kernel-mac-debug-x64-try,vm-precomp-ffi-qemu-linux-release-arm-try,vm-kernel-nnbd-linux-debug-x64-try,analyzer-nnbd-linux-release-try,front-end-nnbd-linux-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151525
Commit-Queue: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
2020-11-03 10:27:44 +00:00
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Expect.isTrue(NativeApi.majorVersion == 2);
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Expect.isTrue(NativeApi.minorVersion >= 0);
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[vm/ffi] Expose a subset of dart_(native_)api.h for dynamic linking.
This CL introduces dart_api_dl.h which exposes a subset of dart_api.h
and dart_native_api.h for dynamic linking at runtime through the FFI.
Dynamic linking is done through including dart_api_dl.cc in a shared
library and passing NativeApi.initializeApiDLData to the init function.
This CL also includes Native API versioning to deal with possible
version skew between native api version against which native libraries
are compiled and the version in the DartVM the code is run on.
The subset of symbols in the CL includes handle related symbols, error
related symbols, handle scope symbols, and native port sumbols.
Design: http://go/dart-ffi-expose-dart-api
Closes: https://github.com/dart-lang/sdk/issues/40607
Closes: https://github.com/dart-lang/sdk/issues/36858
Closes: https://github.com/dart-lang/sdk/issues/41319
Closes: https://github.com/flutter/flutter/issues/46887
Closes: https://github.com/flutter/flutter/issues/47061
Misc:
Closes: https://github.com/dart-lang/sdk/issues/42260
Change-Id: I9e557808dbc99b341f23964cbddbb05f26d7a6c5
Cq-Include-Trybots: luci.dart.try:vm-ffi-android-debug-arm-try,vm-ffi-android-debug-arm64-try,app-kernel-linux-debug-x64-try,vm-kernel-linux-debug-ia32-try,vm-kernel-win-debug-x64-try,vm-kernel-win-debug-ia32-try,vm-kernel-precomp-linux-debug-x64-try,vm-dartkb-linux-release-x64-abi-try,vm-kernel-precomp-android-release-arm64-try,vm-kernel-asan-linux-release-x64-try,vm-kernel-msan-linux-release-x64-try,vm-kernel-precomp-msan-linux-release-x64-try,vm-kernel-linux-release-simarm-try,vm-kernel-linux-release-simarm64-try,vm-kernel-precomp-android-release-arm_x64-try,vm-kernel-precomp-obfuscate-linux-release-x64-try,dart-sdk-linux-try,analyzer-analysis-server-linux-try,analyzer-linux-release-try,front-end-linux-release-x64-try,vm-kernel-precomp-win-release-x64-try,vm-kernel-mac-debug-x64-try,vm-precomp-ffi-qemu-linux-release-arm-try,vm-kernel-nnbd-linux-debug-x64-try,analyzer-nnbd-linux-release-try,front-end-nnbd-linux-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/145592
Commit-Queue: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
2020-06-18 07:30:43 +00:00
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final initializeApi = testLibrary.lookupFunction<
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IntPtr Function(Pointer<Void>),
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int Function(Pointer<Void>)>("InitDartApiDL");
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Expect.isTrue(initializeApi(NativeApi.initializeApiDLData) == 0);
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final registerClosureCallback = testLibrary.lookupFunction<
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Void Function(Pointer),
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void Function(Pointer)>("RegisterClosureCallbackFP");
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registerClosureCallback(closureCallbackPointer);
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}
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