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5cbd939dbb
Cleanup for https://dart-review.googlesource.com/c/sdk/+/301001. TEST= ffi/external_typed_data_finalizer_test with sanitizers Closes: https://github.com/dart-lang/sdk/issues/52349 Change-Id: Iff553c2af7bd61d7d68dbc5a60acbee46e03c17b Cq-Include-Trybots: luci.dart.try:vm-msan-linux-release-x64-try,vm-aot-msan-linux-release-x64-try,vm-aot-ubsan-linux-release-x64-try,vm-ubsan-linux-release-x64-try Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/302785 Reviewed-by: Martin Kustermann <kustermann@google.com> Commit-Queue: Daco Harkes <dacoharkes@google.com>
219 lines
7.3 KiB
C++
219 lines
7.3 KiB
C++
// 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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#include "include/dart_api.h"
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#include "include/dart_api_dl.h"
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#include "include/dart_native_api.h"
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#include "include/dart_version.h"
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#include "include/internal/dart_api_dl_impl.h"
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#include "platform/globals.h"
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#include "vm/bootstrap_natives.h"
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#include "vm/class_finalizer.h"
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#include "vm/class_id.h"
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#include "vm/compiler/ffi/native_type.h"
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#include "vm/exceptions.h"
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#include "vm/flags.h"
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#include "vm/heap/gc_shared.h"
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#include "vm/log.h"
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#include "vm/native_arguments.h"
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#include "vm/native_entry.h"
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#include "vm/object.h"
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#include "vm/object_store.h"
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#include "vm/symbols.h"
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#if !defined(DART_PRECOMPILED_RUNTIME)
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#include "vm/compiler/assembler/assembler.h"
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#include "vm/compiler/ffi/call.h"
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#include "vm/compiler/ffi/callback.h"
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#include "vm/compiler/ffi/marshaller.h"
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#include "vm/compiler/jit/compiler.h"
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#endif // !defined(DART_PRECOMPILED_RUNTIME)
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namespace dart {
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// The remainder of this file implements the dart:ffi native methods.
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DEFINE_NATIVE_ENTRY(Ffi_fromAddress, 1, 1) {
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UNREACHABLE();
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}
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DEFINE_NATIVE_ENTRY(Ffi_address, 0, 1) {
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UNREACHABLE();
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}
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#define DEFINE_NATIVE_ENTRY_LOAD(type) \
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DEFINE_NATIVE_ENTRY(Ffi_load##type, 0, 2) { UNREACHABLE(); }
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CLASS_LIST_FFI_NUMERIC_FIXED_SIZE(DEFINE_NATIVE_ENTRY_LOAD)
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#undef DEFINE_NATIVE_ENTRY_LOAD
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DEFINE_NATIVE_ENTRY(Ffi_loadPointer, 1, 2) {
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UNREACHABLE();
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}
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DEFINE_NATIVE_ENTRY(Ffi_loadStruct, 0, 2) {
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UNREACHABLE();
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}
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#define DEFINE_NATIVE_ENTRY_STORE(type) \
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DEFINE_NATIVE_ENTRY(Ffi_store##type, 0, 3) { UNREACHABLE(); }
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CLASS_LIST_FFI_NUMERIC_FIXED_SIZE(DEFINE_NATIVE_ENTRY_STORE)
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#undef DEFINE_NATIVE_ENTRY_STORE
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DEFINE_NATIVE_ENTRY(Ffi_storePointer, 0, 3) {
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UNREACHABLE();
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}
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// Static invocations to this method are translated directly in streaming FGB.
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DEFINE_NATIVE_ENTRY(Ffi_asFunctionInternal, 2, 2) {
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UNREACHABLE();
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}
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#define DEFINE_NATIVE_ENTRY_AS_EXTERNAL_TYPED_DATA(type) \
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DEFINE_NATIVE_ENTRY(Ffi_asExternalTypedData##type, 0, 2) { UNREACHABLE(); }
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CLASS_LIST_FFI_NUMERIC_FIXED_SIZE(DEFINE_NATIVE_ENTRY_AS_EXTERNAL_TYPED_DATA)
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#undef DEFINE_NATIVE_ENTRY_AS_EXTERNAL_TYPED_DATA
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DEFINE_NATIVE_ENTRY(Ffi_pointerFromFunction, 1, 1) {
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const auto& function = Function::CheckedHandle(zone, arguments->NativeArg0());
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const auto& code =
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Code::Handle(zone, FLAG_precompiled_mode ? function.CurrentCode()
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: function.EnsureHasCode());
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ASSERT(!code.IsNull());
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#if defined(TARGET_ARCH_IA32)
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// On ia32, store the stack delta that we need to use when returning.
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const intptr_t stack_return_delta =
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function.FfiCSignatureReturnsStruct() && CallingConventions::kUsesRet4
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? compiler::target::kWordSize
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: 0;
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#else
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const intptr_t stack_return_delta = 0;
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#endif
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thread->SetFfiCallbackCode(function, code, stack_return_delta);
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uword entry_point = code.EntryPoint();
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// In JIT we use one more indirection:
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// * AOT: Native -> Ffi Trampoline -> Dart function
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// * JIT: Native -> Jit trampoline -> Ffi Trampoline -> Dart function
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//
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// We do that since ffi trampoline code lives in Dart heap. During GC we can
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// flip page protections from RX to RW to GC JITed code. During that time
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// machine code on such pages cannot be executed. Native code therefore has to
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// perform the safepoint transition before executing code in Dart heap (which
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// is why we use the jit trampoline).
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#if !defined(DART_PRECOMPILED_RUNTIME)
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if (NativeCallbackTrampolines::Enabled()) {
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entry_point = isolate->native_callback_trampolines()->TrampolineForId(
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function.FfiCallbackId());
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}
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#endif
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return Pointer::New(entry_point);
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}
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DEFINE_NATIVE_ENTRY(DartNativeApiFunctionPointer, 0, 1) {
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GET_NON_NULL_NATIVE_ARGUMENT(String, name_dart, arguments->NativeArgAt(0));
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const char* name = name_dart.ToCString();
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#define RETURN_FUNCTION_ADDRESS(function_name, R, A) \
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if (strcmp(name, #function_name) == 0) { \
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return Integer::New(reinterpret_cast<intptr_t>(function_name)); \
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}
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DART_NATIVE_API_DL_SYMBOLS(RETURN_FUNCTION_ADDRESS)
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#undef RETURN_FUNCTION_ADDRESS
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const String& error = String::Handle(
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String::NewFormatted("Unknown dart_native_api.h symbol: %s.", name));
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Exceptions::ThrowArgumentError(error);
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}
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DEFINE_NATIVE_ENTRY(DartApiDLMajorVersion, 0, 0) {
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return Integer::New(DART_API_DL_MAJOR_VERSION);
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}
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DEFINE_NATIVE_ENTRY(DartApiDLMinorVersion, 0, 0) {
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return Integer::New(DART_API_DL_MINOR_VERSION);
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}
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static const DartApiEntry dart_api_entries[] = {
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#define ENTRY(name, R, A) \
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DartApiEntry{#name, reinterpret_cast<void (*)()>(name)},
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DART_API_ALL_DL_SYMBOLS(ENTRY)
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#undef ENTRY
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DartApiEntry{nullptr, nullptr}};
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static const DartApi dart_api_data = {
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DART_API_DL_MAJOR_VERSION, DART_API_DL_MINOR_VERSION, dart_api_entries};
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DEFINE_NATIVE_ENTRY(DartApiDLInitializeData, 0, 0) {
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return Integer::New(reinterpret_cast<intptr_t>(&dart_api_data));
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}
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DEFINE_FFI_NATIVE_ENTRY(FinalizerEntry_SetExternalSize,
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void,
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(Dart_Handle entry_handle, intptr_t external_size)) {
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Thread* const thread = Thread::Current();
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TransitionNativeToVM transition(thread);
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Zone* const zone = thread->zone();
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const auto& entry_object =
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Object::Handle(zone, Api::UnwrapHandle(entry_handle));
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const auto& entry = FinalizerEntry::Cast(entry_object);
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Heap::Space space;
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intptr_t external_size_diff;
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{
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NoSafepointScope no_safepoint;
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space = SpaceForExternal(entry.ptr());
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const intptr_t external_size_old = entry.external_size();
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if (FLAG_trace_finalizers) {
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THR_Print("Setting external size from %" Pd " to %" Pd
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" bytes in %s space\n",
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external_size_old, external_size, space == 0 ? "new" : "old");
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}
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external_size_diff = external_size - external_size_old;
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if (external_size_diff == 0) {
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return;
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}
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entry.set_external_size(external_size);
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}
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// The next call cannot be in safepoint.
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if (external_size_diff > 0) {
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if (!thread->isolate_group()->heap()->AllocatedExternal(external_size_diff,
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space)) {
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Exceptions::ThrowOOM();
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}
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} else {
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thread->isolate_group()->heap()->FreedExternal(-external_size_diff, space);
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}
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};
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namespace {
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struct AsTypedListFinalizerData {
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void (*callback)(void*);
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void* token;
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};
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} // namespace
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DEFINE_FFI_NATIVE_ENTRY(Pointer_asTypedListFinalizerAllocateData, void*, ()) {
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auto* result = malloc(sizeof(AsTypedListFinalizerData));
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// Initialized with FFI stores.
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MSAN_UNPOISON(result, sizeof(AsTypedListFinalizerData));
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return result;
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};
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void AsTypedListFinalizerCallback(void* peer) {
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const auto* data = reinterpret_cast<AsTypedListFinalizerData*>(peer);
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data->callback(data->token);
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free(peer);
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}
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DEFINE_FFI_NATIVE_ENTRY(Pointer_asTypedListFinalizerCallbackPointer,
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void*,
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()) {
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return reinterpret_cast<void*>(&AsTypedListFinalizerCallback);
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};
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} // namespace dart
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