diff options
Diffstat (limited to 'runtime/entrypoints/entrypoint_utils.h')
| -rw-r--r-- | runtime/entrypoints/entrypoint_utils.h | 626 |
1 files changed, 32 insertions, 594 deletions
diff --git a/runtime/entrypoints/entrypoint_utils.h b/runtime/entrypoints/entrypoint_utils.h index ff836a4745..11a67ac5dd 100644 --- a/runtime/entrypoints/entrypoint_utils.h +++ b/runtime/entrypoints/entrypoint_utils.h @@ -17,105 +17,40 @@ #ifndef ART_RUNTIME_ENTRYPOINTS_ENTRYPOINT_UTILS_H_ #define ART_RUNTIME_ENTRYPOINTS_ENTRYPOINT_UTILS_H_ +#include <jni.h> +#include <stdint.h> + #include "base/macros.h" -#include "class_linker-inl.h" -#include "common_throws.h" -#include "dex_file.h" -#include "indirect_reference_table.h" +#include "base/mutex.h" +#include "gc/allocator_type.h" #include "invoke_type.h" -#include "jni_internal.h" -#include "mirror/art_method.h" -#include "mirror/array.h" -#include "mirror/class-inl.h" -#include "mirror/object-inl.h" -#include "mirror/throwable.h" -#include "object_utils.h" -#include "handle_scope-inl.h" -#include "thread.h" +#include "jvalue.h" namespace art { namespace mirror { class Class; + class Array; class ArtField; + class ArtMethod; class Object; + class String; } // namespace mirror +class ScopedObjectAccessAlreadyRunnable; +class Thread; + // TODO: Fix no thread safety analysis when GCC can handle template specialization. template <const bool kAccessCheck> ALWAYS_INLINE static inline mirror::Class* CheckObjectAlloc(uint32_t type_idx, mirror::ArtMethod* method, Thread* self, bool* slow_path) - NO_THREAD_SAFETY_ANALYSIS { - mirror::Class* klass = method->GetDexCacheResolvedTypes()->GetWithoutChecks(type_idx); - if (UNLIKELY(klass == NULL)) { - klass = Runtime::Current()->GetClassLinker()->ResolveType(type_idx, method); - *slow_path = true; - if (klass == NULL) { - DCHECK(self->IsExceptionPending()); - return nullptr; // Failure - } - } - if (kAccessCheck) { - if (UNLIKELY(!klass->IsInstantiable())) { - ThrowLocation throw_location = self->GetCurrentLocationForThrow(); - self->ThrowNewException(throw_location, "Ljava/lang/InstantiationError;", - PrettyDescriptor(klass).c_str()); - *slow_path = true; - return nullptr; // Failure - } - mirror::Class* referrer = method->GetDeclaringClass(); - if (UNLIKELY(!referrer->CanAccess(klass))) { - ThrowIllegalAccessErrorClass(referrer, klass); - *slow_path = true; - return nullptr; // Failure - } - } - if (UNLIKELY(!klass->IsInitialized())) { - StackHandleScope<1> hs(self); - Handle<mirror::Class> h_klass(hs.NewHandle(klass)); - // EnsureInitialized (the class initializer) might cause a GC. - // may cause us to suspend meaning that another thread may try to - // change the allocator while we are stuck in the entrypoints of - // an old allocator. Also, the class initialization may fail. To - // handle these cases we mark the slow path boolean as true so - // that the caller knows to check the allocator type to see if it - // has changed and to null-check the return value in case the - // initialization fails. - *slow_path = true; - if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(h_klass, true, true)) { - DCHECK(self->IsExceptionPending()); - return nullptr; // Failure - } - return h_klass.Get(); - } - return klass; -} + NO_THREAD_SAFETY_ANALYSIS; // TODO: Fix no thread safety analysis when annotalysis is smarter. ALWAYS_INLINE static inline mirror::Class* CheckClassInitializedForObjectAlloc(mirror::Class* klass, Thread* self, bool* slow_path) - NO_THREAD_SAFETY_ANALYSIS { - if (UNLIKELY(!klass->IsInitialized())) { - StackHandleScope<1> hs(self); - Handle<mirror::Class> h_class(hs.NewHandle(klass)); - // EnsureInitialized (the class initializer) might cause a GC. - // may cause us to suspend meaning that another thread may try to - // change the allocator while we are stuck in the entrypoints of - // an old allocator. Also, the class initialization may fail. To - // handle these cases we mark the slow path boolean as true so - // that the caller knows to check the allocator type to see if it - // has changed and to null-check the return value in case the - // initialization fails. - *slow_path = true; - if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(h_class, true, true)) { - DCHECK(self->IsExceptionPending()); - return nullptr; // Failure - } - return h_class.Get(); - } - return klass; -} + NO_THREAD_SAFETY_ANALYSIS; // Given the context of a calling Method, use its DexCache to resolve a type to a Class. If it // cannot be resolved, throw an error. If it can, use it to create an instance. @@ -126,19 +61,7 @@ template <bool kAccessCheck, bool kInstrumented> ALWAYS_INLINE static inline mirror::Object* AllocObjectFromCode(uint32_t type_idx, mirror::ArtMethod* method, Thread* self, - gc::AllocatorType allocator_type) - NO_THREAD_SAFETY_ANALYSIS { - bool slow_path = false; - mirror::Class* klass = CheckObjectAlloc<kAccessCheck>(type_idx, method, self, &slow_path); - if (UNLIKELY(slow_path)) { - if (klass == nullptr) { - return nullptr; - } - return klass->Alloc<kInstrumented>(self, Runtime::Current()->GetHeap()->GetCurrentAllocator()); - } - DCHECK(klass != nullptr); - return klass->Alloc<kInstrumented>(self, allocator_type); -} + gc::AllocatorType allocator_type); // Given the context of a calling Method and a resolved class, create an instance. // TODO: Fix NO_THREAD_SAFETY_ANALYSIS when GCC is smarter. @@ -147,21 +70,7 @@ ALWAYS_INLINE static inline mirror::Object* AllocObjectFromCodeResolved(mirror:: mirror::ArtMethod* method, Thread* self, gc::AllocatorType allocator_type) - NO_THREAD_SAFETY_ANALYSIS { - DCHECK(klass != nullptr); - bool slow_path = false; - klass = CheckClassInitializedForObjectAlloc(klass, self, &slow_path); - if (UNLIKELY(slow_path)) { - if (klass == nullptr) { - return nullptr; - } - gc::Heap* heap = Runtime::Current()->GetHeap(); - // Pass in false since the object can not be finalizable. - return klass->Alloc<kInstrumented, false>(self, heap->GetCurrentAllocator()); - } - // Pass in false since the object can not be finalizable. - return klass->Alloc<kInstrumented, false>(self, allocator_type); -} + NO_THREAD_SAFETY_ANALYSIS; // Given the context of a calling Method and an initialized class, create an instance. // TODO: Fix NO_THREAD_SAFETY_ANALYSIS when GCC is smarter. @@ -169,12 +78,7 @@ template <bool kInstrumented> ALWAYS_INLINE static inline mirror::Object* AllocObjectFromCodeInitialized(mirror::Class* klass, mirror::ArtMethod* method, Thread* self, - gc::AllocatorType allocator_type) - NO_THREAD_SAFETY_ANALYSIS { - DCHECK(klass != nullptr); - // Pass in false since the object can not be finalizable. - return klass->Alloc<kInstrumented, false>(self, allocator_type); -} + gc::AllocatorType allocator_type); // TODO: Fix no thread safety analysis when GCC can handle template specialization. @@ -183,32 +87,7 @@ ALWAYS_INLINE static inline mirror::Class* CheckArrayAlloc(uint32_t type_idx, mirror::ArtMethod* method, int32_t component_count, bool* slow_path) - NO_THREAD_SAFETY_ANALYSIS { - if (UNLIKELY(component_count < 0)) { - ThrowNegativeArraySizeException(component_count); - *slow_path = true; - return nullptr; // Failure - } - mirror::Class* klass = method->GetDexCacheResolvedTypes()->GetWithoutChecks(type_idx); - if (UNLIKELY(klass == nullptr)) { // Not in dex cache so try to resolve - klass = Runtime::Current()->GetClassLinker()->ResolveType(type_idx, method); - *slow_path = true; - if (klass == nullptr) { // Error - DCHECK(Thread::Current()->IsExceptionPending()); - return nullptr; // Failure - } - CHECK(klass->IsArrayClass()) << PrettyClass(klass); - } - if (kAccessCheck) { - mirror::Class* referrer = method->GetDeclaringClass(); - if (UNLIKELY(!referrer->CanAccess(klass))) { - ThrowIllegalAccessErrorClass(referrer, klass); - *slow_path = true; - return nullptr; // Failure - } - } - return klass; -} + NO_THREAD_SAFETY_ANALYSIS; // Given the context of a calling Method, use its DexCache to resolve a type to an array Class. If // it cannot be resolved, throw an error. If it can, use it to create an array. @@ -221,22 +100,7 @@ ALWAYS_INLINE static inline mirror::Array* AllocArrayFromCode(uint32_t type_idx, int32_t component_count, Thread* self, gc::AllocatorType allocator_type) - NO_THREAD_SAFETY_ANALYSIS { - bool slow_path = false; - mirror::Class* klass = CheckArrayAlloc<kAccessCheck>(type_idx, method, component_count, - &slow_path); - if (UNLIKELY(slow_path)) { - if (klass == nullptr) { - return nullptr; - } - gc::Heap* heap = Runtime::Current()->GetHeap(); - return mirror::Array::Alloc<kInstrumented>(self, klass, component_count, - klass->GetComponentSize(), - heap->GetCurrentAllocator()); - } - return mirror::Array::Alloc<kInstrumented>(self, klass, component_count, - klass->GetComponentSize(), allocator_type); -} + NO_THREAD_SAFETY_ANALYSIS; template <bool kAccessCheck, bool kInstrumented> ALWAYS_INLINE static inline mirror::Array* AllocArrayFromCodeResolved(mirror::Class* klass, @@ -244,24 +108,7 @@ ALWAYS_INLINE static inline mirror::Array* AllocArrayFromCodeResolved(mirror::Cl int32_t component_count, Thread* self, gc::AllocatorType allocator_type) - NO_THREAD_SAFETY_ANALYSIS { - DCHECK(klass != nullptr); - if (UNLIKELY(component_count < 0)) { - ThrowNegativeArraySizeException(component_count); - return nullptr; // Failure - } - if (kAccessCheck) { - mirror::Class* referrer = method->GetDeclaringClass(); - if (UNLIKELY(!referrer->CanAccess(klass))) { - ThrowIllegalAccessErrorClass(referrer, klass); - return nullptr; // Failure - } - } - // No need to retry a slow-path allocation as the above code won't cause a GC or thread - // suspension. - return mirror::Array::Alloc<kInstrumented>(self, klass, component_count, - klass->GetComponentSize(), allocator_type); -} + NO_THREAD_SAFETY_ANALYSIS; extern mirror::Array* CheckAndAllocArrayFromCode(uint32_t type_idx, mirror::ArtMethod* method, int32_t component_count, Thread* self, @@ -290,422 +137,47 @@ enum FindFieldType { template<FindFieldType type, bool access_check> static inline mirror::ArtField* FindFieldFromCode(uint32_t field_idx, mirror::ArtMethod* referrer, - Thread* self, size_t expected_size) { - bool is_primitive; - bool is_set; - bool is_static; - switch (type) { - case InstanceObjectRead: is_primitive = false; is_set = false; is_static = false; break; - case InstanceObjectWrite: is_primitive = false; is_set = true; is_static = false; break; - case InstancePrimitiveRead: is_primitive = true; is_set = false; is_static = false; break; - case InstancePrimitiveWrite: is_primitive = true; is_set = true; is_static = false; break; - case StaticObjectRead: is_primitive = false; is_set = false; is_static = true; break; - case StaticObjectWrite: is_primitive = false; is_set = true; is_static = true; break; - case StaticPrimitiveRead: is_primitive = true; is_set = false; is_static = true; break; - case StaticPrimitiveWrite: // Keep GCC happy by having a default handler, fall-through. - default: is_primitive = true; is_set = true; is_static = true; break; - } - ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); - mirror::ArtField* resolved_field = class_linker->ResolveField(field_idx, referrer, is_static); - if (UNLIKELY(resolved_field == nullptr)) { - DCHECK(self->IsExceptionPending()); // Throw exception and unwind. - return nullptr; // Failure. - } - mirror::Class* fields_class = resolved_field->GetDeclaringClass(); - if (access_check) { - if (UNLIKELY(resolved_field->IsStatic() != is_static)) { - ThrowIncompatibleClassChangeErrorField(resolved_field, is_static, referrer); - return nullptr; - } - mirror::Class* referring_class = referrer->GetDeclaringClass(); - if (UNLIKELY(!referring_class->CheckResolvedFieldAccess(fields_class, resolved_field, - field_idx))) { - DCHECK(self->IsExceptionPending()); // Throw exception and unwind. - return nullptr; // Failure. - } - if (UNLIKELY(is_set && resolved_field->IsFinal() && (fields_class != referring_class))) { - ThrowIllegalAccessErrorFinalField(referrer, resolved_field); - return nullptr; // Failure. - } else { - if (UNLIKELY(resolved_field->IsPrimitiveType() != is_primitive || - resolved_field->FieldSize() != expected_size)) { - ThrowLocation throw_location = self->GetCurrentLocationForThrow(); - DCHECK(throw_location.GetMethod() == referrer); - self->ThrowNewExceptionF(throw_location, "Ljava/lang/NoSuchFieldError;", - "Attempted read of %zd-bit %s on field '%s'", - expected_size * (32 / sizeof(int32_t)), - is_primitive ? "primitive" : "non-primitive", - PrettyField(resolved_field, true).c_str()); - return nullptr; // Failure. - } - } - } - if (!is_static) { - // instance fields must be being accessed on an initialized class - return resolved_field; - } else { - // If the class is initialized we're done. - if (LIKELY(fields_class->IsInitialized())) { - return resolved_field; - } else { - StackHandleScope<1> hs(self); - Handle<mirror::Class> h_class(hs.NewHandle(fields_class)); - if (LIKELY(class_linker->EnsureInitialized(h_class, true, true))) { - // Otherwise let's ensure the class is initialized before resolving the field. - return resolved_field; - } - DCHECK(self->IsExceptionPending()); // Throw exception and unwind - return nullptr; // Failure. - } - } -} - -// Explicit template declarations of FindFieldFromCode for all field access types. -#define EXPLICIT_FIND_FIELD_FROM_CODE_TEMPLATE_DECL(_type, _access_check) \ -template SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) ALWAYS_INLINE \ -mirror::ArtField* FindFieldFromCode<_type, _access_check>(uint32_t field_idx, \ - mirror::ArtMethod* referrer, \ - Thread* self, size_t expected_size) \ - -#define EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(_type) \ - EXPLICIT_FIND_FIELD_FROM_CODE_TEMPLATE_DECL(_type, false); \ - EXPLICIT_FIND_FIELD_FROM_CODE_TEMPLATE_DECL(_type, true) - -EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(InstanceObjectRead); -EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(InstanceObjectWrite); -EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(InstancePrimitiveRead); -EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(InstancePrimitiveWrite); -EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(StaticObjectRead); -EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(StaticObjectWrite); -EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(StaticPrimitiveRead); -EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(StaticPrimitiveWrite); - -#undef EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL -#undef EXPLICIT_FIND_FIELD_FROM_CODE_TEMPLATE_DECL + Thread* self, size_t expected_size) + SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); template<InvokeType type, bool access_check> static inline mirror::ArtMethod* FindMethodFromCode(uint32_t method_idx, mirror::Object** this_object, - mirror::ArtMethod** referrer, Thread* self) { - ClassLinker* const class_linker = Runtime::Current()->GetClassLinker(); - mirror::ArtMethod* resolved_method = class_linker->GetResolvedMethod(method_idx, *referrer, type); - if (resolved_method == nullptr) { - StackHandleScope<1> hs(self); - mirror::Object* null_this = nullptr; - HandleWrapper<mirror::Object> h_this( - hs.NewHandleWrapper(type == kStatic ? &null_this : this_object)); - resolved_method = class_linker->ResolveMethod(self, method_idx, referrer, type); - } - if (UNLIKELY(resolved_method == nullptr)) { - DCHECK(self->IsExceptionPending()); // Throw exception and unwind. - return nullptr; // Failure. - } else if (UNLIKELY(*this_object == nullptr && type != kStatic)) { - // Maintain interpreter-like semantics where NullPointerException is thrown - // after potential NoSuchMethodError from class linker. - ThrowLocation throw_location = self->GetCurrentLocationForThrow(); - DCHECK_EQ(*referrer, throw_location.GetMethod()); - ThrowNullPointerExceptionForMethodAccess(throw_location, method_idx, type); - return nullptr; // Failure. - } else if (access_check) { - // Incompatible class change should have been handled in resolve method. - if (UNLIKELY(resolved_method->CheckIncompatibleClassChange(type))) { - ThrowIncompatibleClassChangeError(type, resolved_method->GetInvokeType(), resolved_method, - *referrer); - return nullptr; // Failure. - } - mirror::Class* methods_class = resolved_method->GetDeclaringClass(); - mirror::Class* referring_class = (*referrer)->GetDeclaringClass(); - bool can_access_resolved_method = - referring_class->CheckResolvedMethodAccess<type>(methods_class, resolved_method, - method_idx); - if (UNLIKELY(!can_access_resolved_method)) { - DCHECK(self->IsExceptionPending()); // Throw exception and unwind. - return nullptr; // Failure. - } - } - switch (type) { - case kStatic: - case kDirect: - return resolved_method; - case kVirtual: { - mirror::ObjectArray<mirror::ArtMethod>* vtable = (*this_object)->GetClass()->GetVTable(); - uint16_t vtable_index = resolved_method->GetMethodIndex(); - if (access_check && - (vtable == nullptr || vtable_index >= static_cast<uint32_t>(vtable->GetLength()))) { - // Behavior to agree with that of the verifier. - ThrowNoSuchMethodError(type, resolved_method->GetDeclaringClass(), - resolved_method->GetName(), resolved_method->GetSignature()); - return nullptr; // Failure. - } - DCHECK(vtable != nullptr); - return vtable->GetWithoutChecks(vtable_index); - } - case kSuper: { - mirror::Class* super_class = (*referrer)->GetDeclaringClass()->GetSuperClass(); - uint16_t vtable_index = resolved_method->GetMethodIndex(); - mirror::ObjectArray<mirror::ArtMethod>* vtable; - if (access_check) { - // Check existence of super class. - vtable = (super_class != nullptr) ? super_class->GetVTable() : nullptr; - if (vtable == nullptr || vtable_index >= static_cast<uint32_t>(vtable->GetLength())) { - // Behavior to agree with that of the verifier. - ThrowNoSuchMethodError(type, resolved_method->GetDeclaringClass(), - resolved_method->GetName(), resolved_method->GetSignature()); - return nullptr; // Failure. - } - } else { - // Super class must exist. - DCHECK(super_class != nullptr); - vtable = super_class->GetVTable(); - } - DCHECK(vtable != nullptr); - return vtable->GetWithoutChecks(vtable_index); - } - case kInterface: { - uint32_t imt_index = resolved_method->GetDexMethodIndex() % ClassLinker::kImtSize; - mirror::ObjectArray<mirror::ArtMethod>* imt_table = (*this_object)->GetClass()->GetImTable(); - mirror::ArtMethod* imt_method = imt_table->Get(imt_index); - if (!imt_method->IsImtConflictMethod()) { - return imt_method; - } else { - mirror::ArtMethod* interface_method = - (*this_object)->GetClass()->FindVirtualMethodForInterface(resolved_method); - if (UNLIKELY(interface_method == nullptr)) { - ThrowIncompatibleClassChangeErrorClassForInterfaceDispatch(resolved_method, - *this_object, *referrer); - return nullptr; // Failure. - } - return interface_method; - } - } - default: - LOG(FATAL) << "Unknown invoke type " << type; - return nullptr; // Failure. - } -} - -// Explicit template declarations of FindMethodFromCode for all invoke types. -#define EXPLICIT_FIND_METHOD_FROM_CODE_TEMPLATE_DECL(_type, _access_check) \ - template SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) ALWAYS_INLINE \ - mirror::ArtMethod* FindMethodFromCode<_type, _access_check>(uint32_t method_idx, \ - mirror::Object** this_object, \ - mirror::ArtMethod** referrer, \ - Thread* self) -#define EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(_type) \ - EXPLICIT_FIND_METHOD_FROM_CODE_TEMPLATE_DECL(_type, false); \ - EXPLICIT_FIND_METHOD_FROM_CODE_TEMPLATE_DECL(_type, true) - -EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(kStatic); -EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(kDirect); -EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(kVirtual); -EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(kSuper); -EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(kInterface); - -#undef EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL -#undef EXPLICIT_FIND_METHOD_FROM_CODE_TEMPLATE_DECL + mirror::ArtMethod** referrer, Thread* self) + SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); // Fast path field resolution that can't initialize classes or throw exceptions. static inline mirror::ArtField* FindFieldFast(uint32_t field_idx, mirror::ArtMethod* referrer, FindFieldType type, size_t expected_size) - SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { - mirror::ArtField* resolved_field = - referrer->GetDeclaringClass()->GetDexCache()->GetResolvedField(field_idx); - if (UNLIKELY(resolved_field == nullptr)) { - return nullptr; - } - // Check for incompatible class change. - bool is_primitive; - bool is_set; - bool is_static; - switch (type) { - case InstanceObjectRead: is_primitive = false; is_set = false; is_static = false; break; - case InstanceObjectWrite: is_primitive = false; is_set = true; is_static = false; break; - case InstancePrimitiveRead: is_primitive = true; is_set = false; is_static = false; break; - case InstancePrimitiveWrite: is_primitive = true; is_set = true; is_static = false; break; - case StaticObjectRead: is_primitive = false; is_set = false; is_static = true; break; - case StaticObjectWrite: is_primitive = false; is_set = true; is_static = true; break; - case StaticPrimitiveRead: is_primitive = true; is_set = false; is_static = true; break; - case StaticPrimitiveWrite: is_primitive = true; is_set = true; is_static = true; break; - default: - LOG(FATAL) << "UNREACHABLE"; // Assignment below to avoid GCC warnings. - is_primitive = true; - is_set = true; - is_static = true; - break; - } - if (UNLIKELY(resolved_field->IsStatic() != is_static)) { - // Incompatible class change. - return nullptr; - } - mirror::Class* fields_class = resolved_field->GetDeclaringClass(); - if (is_static) { - // Check class is initialized else fail so that we can contend to initialize the class with - // other threads that may be racing to do this. - if (UNLIKELY(!fields_class->IsInitialized())) { - return nullptr; - } - } - mirror::Class* referring_class = referrer->GetDeclaringClass(); - if (UNLIKELY(!referring_class->CanAccess(fields_class) || - !referring_class->CanAccessMember(fields_class, - resolved_field->GetAccessFlags()) || - (is_set && resolved_field->IsFinal() && (fields_class != referring_class)))) { - // Illegal access. - return nullptr; - } - if (UNLIKELY(resolved_field->IsPrimitiveType() != is_primitive || - resolved_field->FieldSize() != expected_size)) { - return nullptr; - } - return resolved_field; -} + SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); // Fast path method resolution that can't throw exceptions. static inline mirror::ArtMethod* FindMethodFast(uint32_t method_idx, mirror::Object* this_object, mirror::ArtMethod* referrer, bool access_check, InvokeType type) - SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { - bool is_direct = type == kStatic || type == kDirect; - if (UNLIKELY(this_object == NULL && !is_direct)) { - return NULL; - } - mirror::ArtMethod* resolved_method = - referrer->GetDeclaringClass()->GetDexCache()->GetResolvedMethod(method_idx); - if (UNLIKELY(resolved_method == NULL)) { - return NULL; - } - if (access_check) { - // Check for incompatible class change errors and access. - bool icce = resolved_method->CheckIncompatibleClassChange(type); - if (UNLIKELY(icce)) { - return NULL; - } - mirror::Class* methods_class = resolved_method->GetDeclaringClass(); - mirror::Class* referring_class = referrer->GetDeclaringClass(); - if (UNLIKELY(!referring_class->CanAccess(methods_class) || - !referring_class->CanAccessMember(methods_class, - resolved_method->GetAccessFlags()))) { - // Potential illegal access, may need to refine the method's class. - return NULL; - } - } - if (type == kInterface) { // Most common form of slow path dispatch. - return this_object->GetClass()->FindVirtualMethodForInterface(resolved_method); - } else if (is_direct) { - return resolved_method; - } else if (type == kSuper) { - return referrer->GetDeclaringClass()->GetSuperClass()->GetVTable()-> - Get(resolved_method->GetMethodIndex()); - } else { - DCHECK(type == kVirtual); - return this_object->GetClass()->GetVTable()->Get(resolved_method->GetMethodIndex()); - } -} + SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); static inline mirror::Class* ResolveVerifyAndClinit(uint32_t type_idx, mirror::ArtMethod* referrer, Thread* self, bool can_run_clinit, bool verify_access) - SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { - ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); - mirror::Class* klass = class_linker->ResolveType(type_idx, referrer); - if (UNLIKELY(klass == nullptr)) { - CHECK(self->IsExceptionPending()); - return nullptr; // Failure - Indicate to caller to deliver exception - } - // Perform access check if necessary. - mirror::Class* referring_class = referrer->GetDeclaringClass(); - if (verify_access && UNLIKELY(!referring_class->CanAccess(klass))) { - ThrowIllegalAccessErrorClass(referring_class, klass); - return nullptr; // Failure - Indicate to caller to deliver exception - } - // If we're just implementing const-class, we shouldn't call <clinit>. - if (!can_run_clinit) { - return klass; - } - // If we are the <clinit> of this class, just return our storage. - // - // Do not set the DexCache InitializedStaticStorage, since that implies <clinit> has finished - // running. - if (klass == referring_class && referrer->IsConstructor() && referrer->IsStatic()) { - return klass; - } - StackHandleScope<1> hs(self); - Handle<mirror::Class> h_class(hs.NewHandle(klass)); - if (!class_linker->EnsureInitialized(h_class, true, true)) { - CHECK(self->IsExceptionPending()); - return nullptr; // Failure - Indicate to caller to deliver exception - } - return h_class.Get(); -} + SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); extern void ThrowStackOverflowError(Thread* self) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); static inline mirror::String* ResolveStringFromCode(mirror::ArtMethod* referrer, uint32_t string_idx) - SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { - ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); - return class_linker->ResolveString(string_idx, referrer); -} + SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); static inline void UnlockJniSynchronizedMethod(jobject locked, Thread* self) - NO_THREAD_SAFETY_ANALYSIS /* SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) */ { - // Save any pending exception over monitor exit call. - mirror::Throwable* saved_exception = NULL; - ThrowLocation saved_throw_location; - bool is_exception_reported = self->IsExceptionReportedToInstrumentation(); - if (UNLIKELY(self->IsExceptionPending())) { - saved_exception = self->GetException(&saved_throw_location); - self->ClearException(); - } - // Decode locked object and unlock, before popping local references. - self->DecodeJObject(locked)->MonitorExit(self); - if (UNLIKELY(self->IsExceptionPending())) { - LOG(FATAL) << "Synchronized JNI code returning with an exception:\n" - << saved_exception->Dump() - << "\nEncountered second exception during implicit MonitorExit:\n" - << self->GetException(NULL)->Dump(); - } - // Restore pending exception. - if (saved_exception != NULL) { - self->SetException(saved_throw_location, saved_exception); - self->SetExceptionReportedToInstrumentation(is_exception_reported); - } -} + SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); static inline void CheckReferenceResult(mirror::Object* o, Thread* self) - SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { - if (o == NULL) { - return; - } - mirror::ArtMethod* m = self->GetCurrentMethod(NULL); - if (o == kInvalidIndirectRefObject) { - JniAbortF(NULL, "invalid reference returned from %s", PrettyMethod(m).c_str()); - } - // Make sure that the result is an instance of the type this method was expected to return. - StackHandleScope<1> hs(self); - Handle<mirror::ArtMethod> h_m(hs.NewHandle(m)); - mirror::Class* return_type = MethodHelper(h_m).GetReturnType(); - - if (!o->InstanceOf(return_type)) { - JniAbortF(NULL, "attempt to return an instance of %s from %s", PrettyTypeOf(o).c_str(), - PrettyMethod(h_m.Get()).c_str()); - } -} + SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); -static inline void CheckSuspend(Thread* thread) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { - for (;;) { - if (thread->ReadFlag(kCheckpointRequest)) { - thread->RunCheckpointFunction(); - } else if (thread->ReadFlag(kSuspendRequest)) { - thread->FullSuspendCheck(); - } else { - break; - } - } -} +static inline void CheckSuspend(Thread* thread) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); JValue InvokeProxyInvocationHandler(ScopedObjectAccessAlreadyRunnable& soa, const char* shorty, jobject rcvr_jobj, jobject interface_art_method_jobj, @@ -750,26 +222,6 @@ static inline const void* GetQuickToPortableBridge() { return GetQuickToInterpreterBridge(); } -static inline const void* GetPortableResolutionTrampoline(ClassLinker* class_linker) { - return class_linker->GetPortableResolutionTrampoline(); -} - -static inline const void* GetQuickResolutionTrampoline(ClassLinker* class_linker) { - return class_linker->GetQuickResolutionTrampoline(); -} - -static inline const void* GetPortableImtConflictTrampoline(ClassLinker* class_linker) { - return class_linker->GetPortableImtConflictTrampoline(); -} - -static inline const void* GetQuickImtConflictTrampoline(ClassLinker* class_linker) { - return class_linker->GetQuickImtConflictTrampoline(); -} - -static inline const void* GetQuickToInterpreterBridgeTrampoline(ClassLinker* class_linker) { - return class_linker->GetQuickToInterpreterBridgeTrampoline(); -} - extern "C" void art_portable_proxy_invoke_handler(); static inline const void* GetPortableProxyInvokeHandler() { return reinterpret_cast<void*>(art_portable_proxy_invoke_handler); @@ -786,21 +238,7 @@ static inline void* GetJniDlsymLookupStub() { } template <typename INT_TYPE, typename FLOAT_TYPE> -static inline INT_TYPE art_float_to_integral(FLOAT_TYPE f) { - const INT_TYPE kMaxInt = static_cast<INT_TYPE>(std::numeric_limits<INT_TYPE>::max()); - const INT_TYPE kMinInt = static_cast<INT_TYPE>(std::numeric_limits<INT_TYPE>::min()); - const FLOAT_TYPE kMaxIntAsFloat = static_cast<FLOAT_TYPE>(kMaxInt); - const FLOAT_TYPE kMinIntAsFloat = static_cast<FLOAT_TYPE>(kMinInt); - if (LIKELY(f > kMinIntAsFloat)) { - if (LIKELY(f < kMaxIntAsFloat)) { - return static_cast<INT_TYPE>(f); - } else { - return kMaxInt; - } - } else { - return (f != f) ? 0 : kMinInt; // f != f implies NaN - } -} +static inline INT_TYPE art_float_to_integral(FLOAT_TYPE f); } // namespace art |