| /* |
| * Copyright (C) 2008 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 "dalvik_system_VMRuntime.h" |
| |
| #ifdef ART_TARGET_ANDROID |
| #include <sys/resource.h> |
| #include <sys/time.h> |
| extern "C" void android_set_application_target_sdk_version(uint32_t version); |
| #endif |
| #include <inttypes.h> |
| #include <limits> |
| #include <limits.h> |
| #include "nativehelper/scoped_utf_chars.h" |
| |
| #include <android-base/stringprintf.h> |
| #include <android-base/strings.h> |
| |
| #include "arch/instruction_set.h" |
| #include "art_method-inl.h" |
| #include "base/enums.h" |
| #include "base/sdk_version.h" |
| #include "class_linker-inl.h" |
| #include "class_loader_context.h" |
| #include "common_throws.h" |
| #include "debugger.h" |
| #include "dex/class_accessor-inl.h" |
| #include "dex/dex_file-inl.h" |
| #include "dex/dex_file_types.h" |
| #include "gc/accounting/card_table-inl.h" |
| #include "gc/allocator/dlmalloc.h" |
| #include "gc/heap.h" |
| #include "gc/space/dlmalloc_space.h" |
| #include "gc/space/image_space.h" |
| #include "gc/task_processor.h" |
| #include "intern_table.h" |
| #include "jit/jit.h" |
| #include "jni/java_vm_ext.h" |
| #include "jni/jni_internal.h" |
| #include "mirror/array-alloc-inl.h" |
| #include "mirror/class-inl.h" |
| #include "mirror/dex_cache-inl.h" |
| #include "mirror/object-inl.h" |
| #include "native_util.h" |
| #include "nativehelper/jni_macros.h" |
| #include "nativehelper/scoped_local_ref.h" |
| #include "runtime.h" |
| #include "scoped_fast_native_object_access-inl.h" |
| #include "scoped_thread_state_change-inl.h" |
| #include "thread.h" |
| #include "thread_list.h" |
| #include "well_known_classes.h" |
| |
| namespace art { |
| |
| using android::base::StringPrintf; |
| |
| static jfloat VMRuntime_getTargetHeapUtilization(JNIEnv*, jobject) { |
| return Runtime::Current()->GetHeap()->GetTargetHeapUtilization(); |
| } |
| |
| static void VMRuntime_nativeSetTargetHeapUtilization(JNIEnv*, jobject, jfloat target) { |
| Runtime::Current()->GetHeap()->SetTargetHeapUtilization(target); |
| } |
| |
| static void VMRuntime_startJitCompilation(JNIEnv*, jobject) { |
| } |
| |
| static void VMRuntime_disableJitCompilation(JNIEnv*, jobject) { |
| } |
| |
| static void VMRuntime_setHiddenApiExemptions(JNIEnv* env, |
| jclass, |
| jobjectArray exemptions) { |
| std::vector<std::string> exemptions_vec; |
| int exemptions_length = env->GetArrayLength(exemptions); |
| for (int i = 0; i < exemptions_length; i++) { |
| jstring exemption = reinterpret_cast<jstring>(env->GetObjectArrayElement(exemptions, i)); |
| const char* raw_exemption = env->GetStringUTFChars(exemption, nullptr); |
| exemptions_vec.push_back(raw_exemption); |
| env->ReleaseStringUTFChars(exemption, raw_exemption); |
| } |
| |
| Runtime::Current()->SetHiddenApiExemptions(exemptions_vec); |
| } |
| |
| static void VMRuntime_setHiddenApiAccessLogSamplingRate(JNIEnv*, jclass, jint rate) { |
| Runtime::Current()->SetHiddenApiEventLogSampleRate(rate); |
| } |
| |
| static jobject VMRuntime_newNonMovableArray(JNIEnv* env, jobject, jclass javaElementClass, |
| jint length) { |
| ScopedFastNativeObjectAccess soa(env); |
| if (UNLIKELY(length < 0)) { |
| ThrowNegativeArraySizeException(length); |
| return nullptr; |
| } |
| ObjPtr<mirror::Class> element_class = soa.Decode<mirror::Class>(javaElementClass); |
| if (UNLIKELY(element_class == nullptr)) { |
| ThrowNullPointerException("element class == null"); |
| return nullptr; |
| } |
| Runtime* runtime = Runtime::Current(); |
| ObjPtr<mirror::Class> array_class = |
| runtime->GetClassLinker()->FindArrayClass(soa.Self(), element_class); |
| if (UNLIKELY(array_class == nullptr)) { |
| return nullptr; |
| } |
| gc::AllocatorType allocator = runtime->GetHeap()->GetCurrentNonMovingAllocator(); |
| ObjPtr<mirror::Array> result = mirror::Array::Alloc(soa.Self(), |
| array_class, |
| length, |
| array_class->GetComponentSizeShift(), |
| allocator); |
| return soa.AddLocalReference<jobject>(result); |
| } |
| |
| static jobject VMRuntime_newUnpaddedArray(JNIEnv* env, jobject, jclass javaElementClass, |
| jint length) { |
| ScopedFastNativeObjectAccess soa(env); |
| if (UNLIKELY(length < 0)) { |
| ThrowNegativeArraySizeException(length); |
| return nullptr; |
| } |
| ObjPtr<mirror::Class> element_class = soa.Decode<mirror::Class>(javaElementClass); |
| if (UNLIKELY(element_class == nullptr)) { |
| ThrowNullPointerException("element class == null"); |
| return nullptr; |
| } |
| Runtime* runtime = Runtime::Current(); |
| ObjPtr<mirror::Class> array_class = runtime->GetClassLinker()->FindArrayClass(soa.Self(), |
| element_class); |
| if (UNLIKELY(array_class == nullptr)) { |
| return nullptr; |
| } |
| gc::AllocatorType allocator = runtime->GetHeap()->GetCurrentAllocator(); |
| ObjPtr<mirror::Array> result = |
| mirror::Array::Alloc</*kIsInstrumented=*/ true, /*kFillUsable=*/ true>( |
| soa.Self(), |
| array_class, |
| length, |
| array_class->GetComponentSizeShift(), |
| allocator); |
| return soa.AddLocalReference<jobject>(result); |
| } |
| |
| static jlong VMRuntime_addressOf(JNIEnv* env, jobject, jobject javaArray) { |
| if (javaArray == nullptr) { // Most likely allocation failed |
| return 0; |
| } |
| ScopedFastNativeObjectAccess soa(env); |
| ObjPtr<mirror::Array> array = soa.Decode<mirror::Array>(javaArray); |
| if (!array->IsArrayInstance()) { |
| ThrowIllegalArgumentException("not an array"); |
| return 0; |
| } |
| if (Runtime::Current()->GetHeap()->IsMovableObject(array)) { |
| ThrowRuntimeException("Trying to get address of movable array object"); |
| return 0; |
| } |
| return reinterpret_cast<uintptr_t>(array->GetRawData(array->GetClass()->GetComponentSize(), 0)); |
| } |
| |
| static void VMRuntime_clearGrowthLimit(JNIEnv*, jobject) { |
| Runtime::Current()->GetHeap()->ClearGrowthLimit(); |
| } |
| |
| static void VMRuntime_clampGrowthLimit(JNIEnv*, jobject) { |
| Runtime::Current()->GetHeap()->ClampGrowthLimit(); |
| } |
| |
| static jboolean VMRuntime_isNativeDebuggable(JNIEnv*, jobject) { |
| return Runtime::Current()->IsNativeDebuggable(); |
| } |
| |
| static jboolean VMRuntime_isJavaDebuggable(JNIEnv*, jobject) { |
| return Runtime::Current()->IsJavaDebuggable(); |
| } |
| |
| static jobjectArray VMRuntime_properties(JNIEnv* env, jobject) { |
| DCHECK(WellKnownClasses::java_lang_String != nullptr); |
| |
| const std::vector<std::string>& properties = Runtime::Current()->GetProperties(); |
| ScopedLocalRef<jobjectArray> ret(env, |
| env->NewObjectArray(static_cast<jsize>(properties.size()), |
| WellKnownClasses::java_lang_String, |
| nullptr /* initial element */)); |
| if (ret == nullptr) { |
| DCHECK(env->ExceptionCheck()); |
| return nullptr; |
| } |
| for (size_t i = 0; i != properties.size(); ++i) { |
| ScopedLocalRef<jstring> str(env, env->NewStringUTF(properties[i].c_str())); |
| if (str == nullptr) { |
| DCHECK(env->ExceptionCheck()); |
| return nullptr; |
| } |
| env->SetObjectArrayElement(ret.get(), static_cast<jsize>(i), str.get()); |
| DCHECK(!env->ExceptionCheck()); |
| } |
| return ret.release(); |
| } |
| |
| // This is for backward compatibility with dalvik which returned the |
| // meaningless "." when no boot classpath or classpath was |
| // specified. Unfortunately, some tests were using java.class.path to |
| // lookup relative file locations, so they are counting on this to be |
| // ".", presumably some applications or libraries could have as well. |
| static const char* DefaultToDot(const std::string& class_path) { |
| return class_path.empty() ? "." : class_path.c_str(); |
| } |
| |
| static jstring VMRuntime_bootClassPath(JNIEnv* env, jobject) { |
| std::string boot_class_path = android::base::Join(Runtime::Current()->GetBootClassPath(), ':'); |
| return env->NewStringUTF(DefaultToDot(boot_class_path)); |
| } |
| |
| static jstring VMRuntime_classPath(JNIEnv* env, jobject) { |
| return env->NewStringUTF(DefaultToDot(Runtime::Current()->GetClassPathString())); |
| } |
| |
| static jstring VMRuntime_vmVersion(JNIEnv* env, jobject) { |
| return env->NewStringUTF(Runtime::GetVersion()); |
| } |
| |
| static jstring VMRuntime_vmLibrary(JNIEnv* env, jobject) { |
| return env->NewStringUTF(kIsDebugBuild ? "libartd.so" : "libart.so"); |
| } |
| |
| static jstring VMRuntime_vmInstructionSet(JNIEnv* env, jobject) { |
| InstructionSet isa = Runtime::Current()->GetInstructionSet(); |
| const char* isa_string = GetInstructionSetString(isa); |
| return env->NewStringUTF(isa_string); |
| } |
| |
| static jboolean VMRuntime_is64Bit(JNIEnv*, jobject) { |
| bool is64BitMode = (sizeof(void*) == sizeof(uint64_t)); |
| return is64BitMode ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| static jboolean VMRuntime_isCheckJniEnabled(JNIEnv* env, jobject) { |
| return down_cast<JNIEnvExt*>(env)->GetVm()->IsCheckJniEnabled() ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| static void VMRuntime_setTargetSdkVersionNative(JNIEnv*, jobject, jint target_sdk_version) { |
| // This is the target SDK version of the app we're about to run. It is intended that this a place |
| // where workarounds can be enabled. |
| // Note that targetSdkVersion may be CUR_DEVELOPMENT (10000). |
| // Note that targetSdkVersion may be 0, meaning "current". |
| uint32_t uint_target_sdk_version = |
| target_sdk_version <= 0 ? static_cast<uint32_t>(SdkVersion::kUnset) |
| : static_cast<uint32_t>(target_sdk_version); |
| Runtime::Current()->SetTargetSdkVersion(uint_target_sdk_version); |
| |
| #ifdef ART_TARGET_ANDROID |
| // This part is letting libc/dynamic linker know about current app's |
| // target sdk version to enable compatibility workarounds. |
| android_set_application_target_sdk_version(uint_target_sdk_version); |
| #endif |
| } |
| |
| static void VMRuntime_setDisabledCompatChangesNative(JNIEnv* env, jobject, |
| jlongArray disabled_compat_changes) { |
| if (disabled_compat_changes == nullptr) { |
| return; |
| } |
| std::set<uint64_t> disabled_compat_changes_set; |
| int length = env->GetArrayLength(disabled_compat_changes); |
| jlong* elements = env->GetLongArrayElements(disabled_compat_changes, /*isCopy*/nullptr); |
| for (int i = 0; i < length; i++) { |
| disabled_compat_changes_set.insert(static_cast<uint64_t>(elements[i])); |
| } |
| Runtime::Current()->SetDisabledCompatChanges(disabled_compat_changes_set); |
| } |
| |
| static inline size_t clamp_to_size_t(jlong n) { |
| if (sizeof(jlong) > sizeof(size_t) |
| && UNLIKELY(n > static_cast<jlong>(std::numeric_limits<size_t>::max()))) { |
| return std::numeric_limits<size_t>::max(); |
| } else { |
| return n; |
| } |
| } |
| |
| static void VMRuntime_registerNativeAllocation(JNIEnv* env, jobject, jlong bytes) { |
| if (UNLIKELY(bytes < 0)) { |
| ScopedObjectAccess soa(env); |
| ThrowRuntimeException("allocation size negative %" PRId64, bytes); |
| return; |
| } |
| Runtime::Current()->GetHeap()->RegisterNativeAllocation(env, clamp_to_size_t(bytes)); |
| } |
| |
| static void VMRuntime_registerNativeFree(JNIEnv* env, jobject, jlong bytes) { |
| if (UNLIKELY(bytes < 0)) { |
| ScopedObjectAccess soa(env); |
| ThrowRuntimeException("allocation size negative %" PRId64, bytes); |
| return; |
| } |
| Runtime::Current()->GetHeap()->RegisterNativeFree(env, clamp_to_size_t(bytes)); |
| } |
| |
| static jint VMRuntime_getNotifyNativeInterval(JNIEnv*, jclass) { |
| return Runtime::Current()->GetHeap()->GetNotifyNativeInterval(); |
| } |
| |
| static void VMRuntime_notifyNativeAllocationsInternal(JNIEnv* env, jobject) { |
| Runtime::Current()->GetHeap()->NotifyNativeAllocations(env); |
| } |
| |
| static jlong VMRuntime_getFinalizerTimeoutMs(JNIEnv*, jobject) { |
| return Runtime::Current()->GetFinalizerTimeoutMs(); |
| } |
| |
| static void VMRuntime_registerSensitiveThread(JNIEnv*, jobject) { |
| Runtime::Current()->RegisterSensitiveThread(); |
| } |
| |
| static void VMRuntime_updateProcessState(JNIEnv*, jobject, jint process_state) { |
| Runtime* runtime = Runtime::Current(); |
| runtime->UpdateProcessState(static_cast<ProcessState>(process_state)); |
| } |
| |
| static void VMRuntime_notifyStartupCompleted(JNIEnv*, jobject) { |
| Runtime::Current()->NotifyStartupCompleted(); |
| } |
| |
| static void VMRuntime_trimHeap(JNIEnv* env, jobject) { |
| Runtime::Current()->GetHeap()->Trim(ThreadForEnv(env)); |
| } |
| |
| static void VMRuntime_concurrentGC(JNIEnv* env, jobject) { |
| Runtime::Current()->GetHeap()->ConcurrentGC(ThreadForEnv(env), gc::kGcCauseBackground, true); |
| } |
| |
| static void VMRuntime_requestHeapTrim(JNIEnv* env, jobject) { |
| Runtime::Current()->GetHeap()->RequestTrim(ThreadForEnv(env)); |
| } |
| |
| static void VMRuntime_requestConcurrentGC(JNIEnv* env, jobject) { |
| Runtime::Current()->GetHeap()->RequestConcurrentGC(ThreadForEnv(env), |
| gc::kGcCauseBackground, |
| true); |
| } |
| |
| static void VMRuntime_startHeapTaskProcessor(JNIEnv* env, jobject) { |
| Runtime::Current()->GetHeap()->GetTaskProcessor()->Start(ThreadForEnv(env)); |
| } |
| |
| static void VMRuntime_stopHeapTaskProcessor(JNIEnv* env, jobject) { |
| Runtime::Current()->GetHeap()->GetTaskProcessor()->Stop(ThreadForEnv(env)); |
| } |
| |
| static void VMRuntime_runHeapTasks(JNIEnv* env, jobject) { |
| Runtime::Current()->GetHeap()->GetTaskProcessor()->RunAllTasks(ThreadForEnv(env)); |
| } |
| |
| using StringTable = std::map<std::string, ObjPtr<mirror::String>>; |
| |
| class PreloadDexCachesStringsVisitor : public SingleRootVisitor { |
| public: |
| explicit PreloadDexCachesStringsVisitor(StringTable* table) : table_(table) { } |
| |
| void VisitRoot(mirror::Object* root, const RootInfo& info ATTRIBUTE_UNUSED) |
| override REQUIRES_SHARED(Locks::mutator_lock_) { |
| ObjPtr<mirror::String> string = root->AsString(); |
| table_->operator[](string->ToModifiedUtf8()) = string; |
| } |
| |
| private: |
| StringTable* const table_; |
| }; |
| |
| // Based on ClassLinker::ResolveString. |
| static void PreloadDexCachesResolveString( |
| ObjPtr<mirror::DexCache> dex_cache, dex::StringIndex string_idx, StringTable& strings) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| uint32_t slot_idx = dex_cache->StringSlotIndex(string_idx); |
| auto pair = dex_cache->GetStrings()[slot_idx].load(std::memory_order_relaxed); |
| if (!pair.object.IsNull()) { |
| return; // The entry already contains some String. |
| } |
| const DexFile* dex_file = dex_cache->GetDexFile(); |
| const char* utf8 = dex_file->StringDataByIdx(string_idx); |
| ObjPtr<mirror::String> string = strings[utf8]; |
| if (string == nullptr) { |
| return; |
| } |
| dex_cache->SetResolvedString(string_idx, string); |
| } |
| |
| // Based on ClassLinker::ResolveType. |
| static void PreloadDexCachesResolveType(Thread* self, |
| ObjPtr<mirror::DexCache> dex_cache, |
| dex::TypeIndex type_idx) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| uint32_t slot_idx = dex_cache->TypeSlotIndex(type_idx); |
| auto pair = dex_cache->GetResolvedTypes()[slot_idx].load(std::memory_order_relaxed); |
| if (!pair.object.IsNull()) { |
| return; // The entry already contains some Class. |
| } |
| const DexFile* dex_file = dex_cache->GetDexFile(); |
| const char* class_name = dex_file->StringByTypeIdx(type_idx); |
| ClassLinker* linker = Runtime::Current()->GetClassLinker(); |
| ObjPtr<mirror::Class> klass = (class_name[1] == '\0') |
| ? linker->LookupPrimitiveClass(class_name[0]) |
| : linker->LookupClass(self, class_name, nullptr); |
| if (klass == nullptr || !klass->IsResolved()) { |
| return; |
| } |
| dex_cache->SetResolvedType(type_idx, klass); |
| } |
| |
| // Based on ClassLinker::ResolveField. |
| static void PreloadDexCachesResolveField(ObjPtr<mirror::DexCache> dex_cache, |
| uint32_t field_idx, |
| bool is_static) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| uint32_t slot_idx = dex_cache->FieldSlotIndex(field_idx); |
| auto pair = mirror::DexCache::GetNativePairPtrSize(dex_cache->GetResolvedFields(), |
| slot_idx, |
| kRuntimePointerSize); |
| if (pair.object != nullptr) { |
| return; // The entry already contains some ArtField. |
| } |
| const DexFile* dex_file = dex_cache->GetDexFile(); |
| const dex::FieldId& field_id = dex_file->GetFieldId(field_idx); |
| ObjPtr<mirror::Class> klass = Runtime::Current()->GetClassLinker()->LookupResolvedType( |
| field_id.class_idx_, dex_cache, /* class_loader= */ nullptr); |
| if (klass == nullptr) { |
| return; |
| } |
| ArtField* field = is_static |
| ? mirror::Class::FindStaticField(Thread::Current(), klass, dex_cache, field_idx) |
| : klass->FindInstanceField(dex_cache, field_idx); |
| if (field == nullptr) { |
| return; |
| } |
| dex_cache->SetResolvedField(field_idx, field, kRuntimePointerSize); |
| } |
| |
| // Based on ClassLinker::ResolveMethod. |
| static void PreloadDexCachesResolveMethod(ObjPtr<mirror::DexCache> dex_cache, uint32_t method_idx) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| uint32_t slot_idx = dex_cache->MethodSlotIndex(method_idx); |
| auto pair = mirror::DexCache::GetNativePairPtrSize(dex_cache->GetResolvedMethods(), |
| slot_idx, |
| kRuntimePointerSize); |
| if (pair.object != nullptr) { |
| return; // The entry already contains some ArtMethod. |
| } |
| const DexFile* dex_file = dex_cache->GetDexFile(); |
| const dex::MethodId& method_id = dex_file->GetMethodId(method_idx); |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| |
| ObjPtr<mirror::Class> klass = class_linker->LookupResolvedType( |
| method_id.class_idx_, dex_cache, /* class_loader= */ nullptr); |
| if (klass == nullptr) { |
| return; |
| } |
| // Call FindResolvedMethod to populate the dex cache. |
| class_linker->FindResolvedMethod(klass, dex_cache, /* class_loader= */ nullptr, method_idx); |
| } |
| |
| struct DexCacheStats { |
| uint32_t num_strings; |
| uint32_t num_types; |
| uint32_t num_fields; |
| uint32_t num_methods; |
| DexCacheStats() : num_strings(0), |
| num_types(0), |
| num_fields(0), |
| num_methods(0) {} |
| }; |
| |
| static const bool kPreloadDexCachesEnabled = true; |
| |
| // Disabled because it takes a long time (extra half second) but |
| // gives almost no benefit in terms of saving private dirty pages. |
| static const bool kPreloadDexCachesStrings = false; |
| |
| static const bool kPreloadDexCachesTypes = true; |
| static const bool kPreloadDexCachesFieldsAndMethods = true; |
| |
| static const bool kPreloadDexCachesCollectStats = true; |
| |
| static void PreloadDexCachesStatsTotal(DexCacheStats* total) { |
| if (!kPreloadDexCachesCollectStats) { |
| return; |
| } |
| |
| ClassLinker* linker = Runtime::Current()->GetClassLinker(); |
| const std::vector<const DexFile*>& boot_class_path = linker->GetBootClassPath(); |
| for (size_t i = 0; i< boot_class_path.size(); i++) { |
| const DexFile* dex_file = boot_class_path[i]; |
| CHECK(dex_file != nullptr); |
| total->num_strings += dex_file->NumStringIds(); |
| total->num_fields += dex_file->NumFieldIds(); |
| total->num_methods += dex_file->NumMethodIds(); |
| total->num_types += dex_file->NumTypeIds(); |
| } |
| } |
| |
| static void PreloadDexCachesStatsFilled(DexCacheStats* filled) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| if (!kPreloadDexCachesCollectStats) { |
| return; |
| } |
| // TODO: Update for hash-based DexCache arrays. |
| ClassLinker* const class_linker = Runtime::Current()->GetClassLinker(); |
| Thread* const self = Thread::Current(); |
| for (const DexFile* dex_file : class_linker->GetBootClassPath()) { |
| CHECK(dex_file != nullptr); |
| // In fallback mode, not all boot classpath components might be registered, yet. |
| if (!class_linker->IsDexFileRegistered(self, *dex_file)) { |
| continue; |
| } |
| const ObjPtr<mirror::DexCache> dex_cache = class_linker->FindDexCache(self, *dex_file); |
| DCHECK(dex_cache != nullptr); // Boot class path dex caches are never unloaded. |
| for (size_t j = 0, num_strings = dex_cache->NumStrings(); j < num_strings; ++j) { |
| auto pair = dex_cache->GetStrings()[j].load(std::memory_order_relaxed); |
| if (!pair.object.IsNull()) { |
| filled->num_strings++; |
| } |
| } |
| for (size_t j = 0, num_types = dex_cache->NumResolvedTypes(); j < num_types; ++j) { |
| auto pair = dex_cache->GetResolvedTypes()[j].load(std::memory_order_relaxed); |
| if (!pair.object.IsNull()) { |
| filled->num_types++; |
| } |
| } |
| for (size_t j = 0, num_fields = dex_cache->NumResolvedFields(); j < num_fields; ++j) { |
| auto pair = mirror::DexCache::GetNativePairPtrSize(dex_cache->GetResolvedFields(), |
| j, |
| kRuntimePointerSize); |
| if (pair.object != nullptr) { |
| filled->num_fields++; |
| } |
| } |
| for (size_t j = 0, num_methods = dex_cache->NumResolvedMethods(); j < num_methods; ++j) { |
| auto pair = mirror::DexCache::GetNativePairPtrSize(dex_cache->GetResolvedMethods(), |
| j, |
| kRuntimePointerSize); |
| if (pair.object != nullptr) { |
| filled->num_methods++; |
| } |
| } |
| } |
| } |
| |
| // TODO: http://b/11309598 This code was ported over based on the |
| // Dalvik version. However, ART has similar code in other places such |
| // as the CompilerDriver. This code could probably be refactored to |
| // serve both uses. |
| static void VMRuntime_preloadDexCaches(JNIEnv* env, jobject) { |
| if (!kPreloadDexCachesEnabled) { |
| return; |
| } |
| |
| ScopedObjectAccess soa(env); |
| |
| DexCacheStats total; |
| DexCacheStats before; |
| if (kPreloadDexCachesCollectStats) { |
| LOG(INFO) << "VMRuntime.preloadDexCaches starting"; |
| PreloadDexCachesStatsTotal(&total); |
| PreloadDexCachesStatsFilled(&before); |
| } |
| |
| Runtime* runtime = Runtime::Current(); |
| ClassLinker* linker = runtime->GetClassLinker(); |
| |
| // We use a std::map to avoid heap allocating StringObjects to lookup in gDvm.literalStrings |
| StringTable strings; |
| if (kPreloadDexCachesStrings) { |
| PreloadDexCachesStringsVisitor visitor(&strings); |
| runtime->GetInternTable()->VisitRoots(&visitor, kVisitRootFlagAllRoots); |
| } |
| |
| const std::vector<const DexFile*>& boot_class_path = linker->GetBootClassPath(); |
| for (size_t i = 0; i < boot_class_path.size(); i++) { |
| const DexFile* dex_file = boot_class_path[i]; |
| CHECK(dex_file != nullptr); |
| ObjPtr<mirror::DexCache> dex_cache = linker->RegisterDexFile(*dex_file, nullptr); |
| CHECK(dex_cache != nullptr); // Boot class path dex caches are never unloaded. |
| if (kPreloadDexCachesStrings) { |
| for (size_t j = 0; j < dex_cache->NumStrings(); j++) { |
| PreloadDexCachesResolveString(dex_cache, dex::StringIndex(j), strings); |
| } |
| } |
| |
| if (kPreloadDexCachesTypes) { |
| for (size_t j = 0; j < dex_cache->NumResolvedTypes(); j++) { |
| PreloadDexCachesResolveType(soa.Self(), dex_cache, dex::TypeIndex(j)); |
| } |
| } |
| |
| if (kPreloadDexCachesFieldsAndMethods) { |
| for (ClassAccessor accessor : dex_file->GetClasses()) { |
| for (const ClassAccessor::Field& field : accessor.GetFields()) { |
| PreloadDexCachesResolveField(dex_cache, field.GetIndex(), field.IsStatic()); |
| } |
| for (const ClassAccessor::Method& method : accessor.GetMethods()) { |
| PreloadDexCachesResolveMethod(dex_cache, method.GetIndex()); |
| } |
| } |
| } |
| } |
| |
| if (kPreloadDexCachesCollectStats) { |
| DexCacheStats after; |
| PreloadDexCachesStatsFilled(&after); |
| LOG(INFO) << StringPrintf("VMRuntime.preloadDexCaches strings total=%d before=%d after=%d", |
| total.num_strings, before.num_strings, after.num_strings); |
| LOG(INFO) << StringPrintf("VMRuntime.preloadDexCaches types total=%d before=%d after=%d", |
| total.num_types, before.num_types, after.num_types); |
| LOG(INFO) << StringPrintf("VMRuntime.preloadDexCaches fields total=%d before=%d after=%d", |
| total.num_fields, before.num_fields, after.num_fields); |
| LOG(INFO) << StringPrintf("VMRuntime.preloadDexCaches methods total=%d before=%d after=%d", |
| total.num_methods, before.num_methods, after.num_methods); |
| LOG(INFO) << StringPrintf("VMRuntime.preloadDexCaches finished"); |
| } |
| } |
| |
| |
| /* |
| * This is called by the framework when it knows the application directory and |
| * process name. |
| */ |
| static void VMRuntime_registerAppInfo(JNIEnv* env, |
| jclass clazz ATTRIBUTE_UNUSED, |
| jstring profile_file, |
| jobjectArray code_paths) { |
| std::vector<std::string> code_paths_vec; |
| int code_paths_length = env->GetArrayLength(code_paths); |
| for (int i = 0; i < code_paths_length; i++) { |
| jstring code_path = reinterpret_cast<jstring>(env->GetObjectArrayElement(code_paths, i)); |
| const char* raw_code_path = env->GetStringUTFChars(code_path, nullptr); |
| code_paths_vec.push_back(raw_code_path); |
| env->ReleaseStringUTFChars(code_path, raw_code_path); |
| } |
| |
| const char* raw_profile_file = env->GetStringUTFChars(profile_file, nullptr); |
| std::string profile_file_str(raw_profile_file); |
| env->ReleaseStringUTFChars(profile_file, raw_profile_file); |
| |
| Runtime::Current()->RegisterAppInfo(code_paths_vec, profile_file_str); |
| } |
| |
| static jboolean VMRuntime_isBootClassPathOnDisk(JNIEnv* env, jclass, jstring java_instruction_set) { |
| ScopedUtfChars instruction_set(env, java_instruction_set); |
| if (instruction_set.c_str() == nullptr) { |
| return JNI_FALSE; |
| } |
| InstructionSet isa = GetInstructionSetFromString(instruction_set.c_str()); |
| if (isa == InstructionSet::kNone) { |
| ScopedLocalRef<jclass> iae(env, env->FindClass("java/lang/IllegalArgumentException")); |
| std::string message(StringPrintf("Instruction set %s is invalid.", instruction_set.c_str())); |
| env->ThrowNew(iae.get(), message.c_str()); |
| return JNI_FALSE; |
| } |
| return gc::space::ImageSpace::IsBootClassPathOnDisk(isa); |
| } |
| |
| static jstring VMRuntime_getCurrentInstructionSet(JNIEnv* env, jclass) { |
| return env->NewStringUTF(GetInstructionSetString(kRuntimeISA)); |
| } |
| |
| static jboolean VMRuntime_didPruneDalvikCache(JNIEnv* env ATTRIBUTE_UNUSED, |
| jclass klass ATTRIBUTE_UNUSED) { |
| return Runtime::Current()->GetPrunedDalvikCache() ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| static void VMRuntime_setSystemDaemonThreadPriority(JNIEnv* env ATTRIBUTE_UNUSED, |
| jclass klass ATTRIBUTE_UNUSED) { |
| #ifdef ART_TARGET_ANDROID |
| Thread* self = Thread::Current(); |
| DCHECK(self != nullptr); |
| pid_t tid = self->GetTid(); |
| // We use a priority lower than the default for the system daemon threads (eg HeapTaskDaemon) to |
| // avoid jank due to CPU contentions between GC and other UI-related threads. b/36631902. |
| // We may use a native priority that doesn't have a corresponding java.lang.Thread-level priority. |
| static constexpr int kSystemDaemonNiceValue = 4; // priority 124 |
| if (setpriority(PRIO_PROCESS, tid, kSystemDaemonNiceValue) != 0) { |
| PLOG(INFO) << *self << " setpriority(PRIO_PROCESS, " << tid << ", " |
| << kSystemDaemonNiceValue << ") failed"; |
| } |
| #endif |
| } |
| |
| static void VMRuntime_setDedupeHiddenApiWarnings(JNIEnv* env ATTRIBUTE_UNUSED, |
| jclass klass ATTRIBUTE_UNUSED, |
| jboolean dedupe) { |
| Runtime::Current()->SetDedupeHiddenApiWarnings(dedupe); |
| } |
| |
| static void VMRuntime_setProcessPackageName(JNIEnv* env, |
| jclass klass ATTRIBUTE_UNUSED, |
| jstring java_package_name) { |
| ScopedUtfChars package_name(env, java_package_name); |
| Runtime::Current()->SetProcessPackageName(package_name.c_str()); |
| } |
| |
| static void VMRuntime_setProcessDataDirectory(JNIEnv* env, jclass, jstring java_data_dir) { |
| ScopedUtfChars data_dir(env, java_data_dir); |
| Runtime::Current()->SetProcessDataDirectory(data_dir.c_str()); |
| } |
| |
| static void VMRuntime_bootCompleted(JNIEnv* env ATTRIBUTE_UNUSED, |
| jclass klass ATTRIBUTE_UNUSED) { |
| jit::Jit* jit = Runtime::Current()->GetJit(); |
| if (jit != nullptr) { |
| jit->BootCompleted(); |
| } |
| } |
| |
| class ClearJitCountersVisitor : public ClassVisitor { |
| public: |
| bool operator()(ObjPtr<mirror::Class> klass) override REQUIRES_SHARED(Locks::mutator_lock_) { |
| // Avoid some types of classes that don't need their methods visited. |
| if (klass->IsProxyClass() || |
| klass->IsArrayClass() || |
| klass->IsPrimitive() || |
| !klass->IsResolved() || |
| klass->IsErroneousResolved()) { |
| return true; |
| } |
| for (ArtMethod& m : klass->GetMethods(kRuntimePointerSize)) { |
| if (!m.IsAbstract()) { |
| if (m.GetCounter() != 0) { |
| m.SetCounter(0); |
| } |
| } |
| } |
| return true; |
| } |
| }; |
| |
| static void VMRuntime_resetJitCounters(JNIEnv* env, jclass klass ATTRIBUTE_UNUSED) { |
| ScopedObjectAccess soa(env); |
| ClearJitCountersVisitor visitor; |
| Runtime::Current()->GetClassLinker()->VisitClasses(&visitor); |
| } |
| |
| static jboolean VMRuntime_isValidClassLoaderContext(JNIEnv* env, |
| jclass klass ATTRIBUTE_UNUSED, |
| jstring jencoded_class_loader_context) { |
| if (UNLIKELY(jencoded_class_loader_context == nullptr)) { |
| ScopedFastNativeObjectAccess soa(env); |
| ThrowNullPointerException("encoded_class_loader_context == null"); |
| return false; |
| } |
| ScopedUtfChars encoded_class_loader_context(env, jencoded_class_loader_context); |
| return ClassLoaderContext::IsValidEncoding(encoded_class_loader_context.c_str()); |
| } |
| |
| static JNINativeMethod gMethods[] = { |
| FAST_NATIVE_METHOD(VMRuntime, addressOf, "(Ljava/lang/Object;)J"), |
| NATIVE_METHOD(VMRuntime, bootClassPath, "()Ljava/lang/String;"), |
| NATIVE_METHOD(VMRuntime, clampGrowthLimit, "()V"), |
| NATIVE_METHOD(VMRuntime, classPath, "()Ljava/lang/String;"), |
| NATIVE_METHOD(VMRuntime, clearGrowthLimit, "()V"), |
| NATIVE_METHOD(VMRuntime, concurrentGC, "()V"), |
| NATIVE_METHOD(VMRuntime, disableJitCompilation, "()V"), |
| NATIVE_METHOD(VMRuntime, setHiddenApiExemptions, "([Ljava/lang/String;)V"), |
| NATIVE_METHOD(VMRuntime, setHiddenApiAccessLogSamplingRate, "(I)V"), |
| NATIVE_METHOD(VMRuntime, getTargetHeapUtilization, "()F"), |
| FAST_NATIVE_METHOD(VMRuntime, isNativeDebuggable, "()Z"), |
| NATIVE_METHOD(VMRuntime, isJavaDebuggable, "()Z"), |
| NATIVE_METHOD(VMRuntime, nativeSetTargetHeapUtilization, "(F)V"), |
| FAST_NATIVE_METHOD(VMRuntime, newNonMovableArray, "(Ljava/lang/Class;I)Ljava/lang/Object;"), |
| FAST_NATIVE_METHOD(VMRuntime, newUnpaddedArray, "(Ljava/lang/Class;I)Ljava/lang/Object;"), |
| NATIVE_METHOD(VMRuntime, properties, "()[Ljava/lang/String;"), |
| NATIVE_METHOD(VMRuntime, setTargetSdkVersionNative, "(I)V"), |
| NATIVE_METHOD(VMRuntime, setDisabledCompatChangesNative, "([J)V"), |
| NATIVE_METHOD(VMRuntime, registerNativeAllocation, "(J)V"), |
| NATIVE_METHOD(VMRuntime, registerNativeFree, "(J)V"), |
| NATIVE_METHOD(VMRuntime, getNotifyNativeInterval, "()I"), |
| NATIVE_METHOD(VMRuntime, getFinalizerTimeoutMs, "()J"), |
| NATIVE_METHOD(VMRuntime, notifyNativeAllocationsInternal, "()V"), |
| NATIVE_METHOD(VMRuntime, notifyStartupCompleted, "()V"), |
| NATIVE_METHOD(VMRuntime, registerSensitiveThread, "()V"), |
| NATIVE_METHOD(VMRuntime, requestConcurrentGC, "()V"), |
| NATIVE_METHOD(VMRuntime, requestHeapTrim, "()V"), |
| NATIVE_METHOD(VMRuntime, runHeapTasks, "()V"), |
| NATIVE_METHOD(VMRuntime, updateProcessState, "(I)V"), |
| NATIVE_METHOD(VMRuntime, startHeapTaskProcessor, "()V"), |
| NATIVE_METHOD(VMRuntime, startJitCompilation, "()V"), |
| NATIVE_METHOD(VMRuntime, stopHeapTaskProcessor, "()V"), |
| NATIVE_METHOD(VMRuntime, trimHeap, "()V"), |
| NATIVE_METHOD(VMRuntime, vmVersion, "()Ljava/lang/String;"), |
| NATIVE_METHOD(VMRuntime, vmLibrary, "()Ljava/lang/String;"), |
| NATIVE_METHOD(VMRuntime, vmInstructionSet, "()Ljava/lang/String;"), |
| FAST_NATIVE_METHOD(VMRuntime, is64Bit, "()Z"), |
| FAST_NATIVE_METHOD(VMRuntime, isCheckJniEnabled, "()Z"), |
| NATIVE_METHOD(VMRuntime, preloadDexCaches, "()V"), |
| NATIVE_METHOD(VMRuntime, registerAppInfo, "(Ljava/lang/String;[Ljava/lang/String;)V"), |
| NATIVE_METHOD(VMRuntime, isBootClassPathOnDisk, "(Ljava/lang/String;)Z"), |
| NATIVE_METHOD(VMRuntime, getCurrentInstructionSet, "()Ljava/lang/String;"), |
| NATIVE_METHOD(VMRuntime, didPruneDalvikCache, "()Z"), |
| NATIVE_METHOD(VMRuntime, setSystemDaemonThreadPriority, "()V"), |
| NATIVE_METHOD(VMRuntime, setDedupeHiddenApiWarnings, "(Z)V"), |
| NATIVE_METHOD(VMRuntime, setProcessPackageName, "(Ljava/lang/String;)V"), |
| NATIVE_METHOD(VMRuntime, setProcessDataDirectory, "(Ljava/lang/String;)V"), |
| NATIVE_METHOD(VMRuntime, bootCompleted, "()V"), |
| NATIVE_METHOD(VMRuntime, resetJitCounters, "()V"), |
| NATIVE_METHOD(VMRuntime, isValidClassLoaderContext, "(Ljava/lang/String;)Z"), |
| }; |
| |
| void register_dalvik_system_VMRuntime(JNIEnv* env) { |
| REGISTER_NATIVE_METHODS("dalvik/system/VMRuntime"); |
| } |
| |
| } // namespace art |