131 lines
4.4 KiB
C++
131 lines
4.4 KiB
C++
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "dex_cache-inl.h"
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#include "art_method-inl.h"
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#include "class_linker.h"
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#include "gc/accounting/card_table-inl.h"
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#include "gc/heap.h"
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#include "linear_alloc.h"
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#include "oat_file.h"
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#include "object-inl.h"
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#include "object.h"
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#include "object_array-inl.h"
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#include "reflective_value_visitor.h"
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#include "runtime.h"
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#include "runtime_globals.h"
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#include "string.h"
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#include "thread.h"
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#include "write_barrier.h"
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namespace art {
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namespace mirror {
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void DexCache::Initialize(const DexFile* dex_file, ObjPtr<ClassLoader> class_loader) {
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DCHECK(GetDexFile() == nullptr);
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DCHECK(GetStrings() == nullptr);
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DCHECK(GetResolvedTypes() == nullptr);
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DCHECK(GetResolvedMethods() == nullptr);
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DCHECK(GetResolvedFields() == nullptr);
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DCHECK(GetResolvedMethodTypes() == nullptr);
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DCHECK(GetResolvedCallSites() == nullptr);
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ScopedAssertNoThreadSuspension sants(__FUNCTION__);
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SetDexFile(dex_file);
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SetClassLoader(class_loader);
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}
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void DexCache::VisitReflectiveTargets(ReflectiveValueVisitor* visitor) {
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bool wrote = false;
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FieldDexCacheType* fields = GetResolvedFields();
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size_t num_fields = NumResolvedFields();
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// Check both the data pointer and count since the array might be initialized
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// concurrently on other thread, and we might observe just one of the values.
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for (size_t i = 0; fields != nullptr && i < num_fields; i++) {
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auto pair(GetNativePair(fields, i));
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if (pair.index == FieldDexCachePair::InvalidIndexForSlot(i)) {
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continue;
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}
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ArtField* new_val = visitor->VisitField(
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pair.object, DexCacheSourceInfo(kSourceDexCacheResolvedField, pair.index, this));
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if (UNLIKELY(new_val != pair.object)) {
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if (new_val == nullptr) {
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pair = FieldDexCachePair(nullptr, FieldDexCachePair::InvalidIndexForSlot(i));
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} else {
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pair.object = new_val;
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}
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SetNativePair(fields, i, pair);
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wrote = true;
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}
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}
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MethodDexCacheType* methods = GetResolvedMethods();
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size_t num_methods = NumResolvedMethods();
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// Check both the data pointer and count since the array might be initialized
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// concurrently on other thread, and we might observe just one of the values.
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for (size_t i = 0; methods != nullptr && i < num_methods; i++) {
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auto pair(GetNativePair(methods, i));
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if (pair.index == MethodDexCachePair::InvalidIndexForSlot(i)) {
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continue;
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}
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ArtMethod* new_val = visitor->VisitMethod(
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pair.object, DexCacheSourceInfo(kSourceDexCacheResolvedMethod, pair.index, this));
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if (UNLIKELY(new_val != pair.object)) {
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if (new_val == nullptr) {
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pair = MethodDexCachePair(nullptr, MethodDexCachePair::InvalidIndexForSlot(i));
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} else {
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pair.object = new_val;
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}
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SetNativePair(methods, i, pair);
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wrote = true;
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}
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}
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if (wrote) {
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WriteBarrier::ForEveryFieldWrite(this);
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}
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}
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void DexCache::ResetNativeArrays() {
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SetStrings(nullptr);
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SetResolvedTypes(nullptr);
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SetResolvedMethods(nullptr);
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SetResolvedFields(nullptr);
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SetResolvedMethodTypes(nullptr);
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SetResolvedCallSites(nullptr);
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SetField32<false>(NumStringsOffset(), 0);
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SetField32<false>(NumResolvedTypesOffset(), 0);
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SetField32<false>(NumResolvedMethodsOffset(), 0);
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SetField32<false>(NumResolvedFieldsOffset(), 0);
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SetField32<false>(NumResolvedMethodTypesOffset(), 0);
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SetField32<false>(NumResolvedCallSitesOffset(), 0);
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}
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void DexCache::SetLocation(ObjPtr<mirror::String> location) {
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SetFieldObject<false>(OFFSET_OF_OBJECT_MEMBER(DexCache, location_), location);
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}
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void DexCache::SetClassLoader(ObjPtr<ClassLoader> class_loader) {
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SetFieldObject<false>(OFFSET_OF_OBJECT_MEMBER(DexCache, class_loader_), class_loader);
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}
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ObjPtr<ClassLoader> DexCache::GetClassLoader() {
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return GetFieldObject<ClassLoader>(OFFSET_OF_OBJECT_MEMBER(DexCache, class_loader_));
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}
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} // namespace mirror
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} // namespace art
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