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