259 lines
12 KiB
C++
259 lines
12 KiB
C++
/*
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* Copyright (C) 2012 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 "entrypoints/quick/quick_alloc_entrypoints.h"
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#include "art_method-inl.h"
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#include "base/enums.h"
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#include "base/quasi_atomic.h"
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#include "callee_save_frame.h"
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#include "dex/dex_file_types.h"
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#include "entrypoints/entrypoint_utils-inl.h"
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#include "mirror/class-inl.h"
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#include "mirror/object-inl.h"
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#include "mirror/object_array-inl.h"
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#include "mirror/string-alloc-inl.h"
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namespace art {
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static constexpr bool kUseTlabFastPath = true;
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template <bool kInitialized,
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bool kWithChecks,
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bool kInstrumented,
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gc::AllocatorType allocator_type>
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static ALWAYS_INLINE inline mirror::Object* artAllocObjectFromCode(
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mirror::Class* klass,
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Thread* self) REQUIRES_SHARED(Locks::mutator_lock_) {
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ScopedQuickEntrypointChecks sqec(self);
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DCHECK(klass != nullptr);
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if (kUseTlabFastPath &&
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!kWithChecks &&
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!kInstrumented &&
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allocator_type == gc::kAllocatorTypeTLAB) {
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// The "object size alloc fast path" is set when the class is
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// visibly initialized, objects are fixed size and non-finalizable.
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// Otherwise, the value is too large for the size check to succeed.
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size_t byte_count = klass->GetObjectSizeAllocFastPath();
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if (LIKELY(byte_count < self->TlabSize())) {
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static_assert(kObjectAlignment == gc::space::BumpPointerSpace::kAlignment, "Alignment check");
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DCHECK_ALIGNED(byte_count, gc::space::BumpPointerSpace::kAlignment);
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mirror::Object* obj = self->AllocTlab(byte_count);
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DCHECK(obj != nullptr) << "AllocTlab can't fail";
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obj->SetClass(klass);
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if (kUseBakerReadBarrier) {
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obj->AssertReadBarrierState();
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}
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QuasiAtomic::ThreadFenceForConstructor();
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return obj;
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}
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}
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if (kInitialized) {
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return AllocObjectFromCodeInitialized<kInstrumented>(klass, self, allocator_type).Ptr();
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} else if (!kWithChecks) {
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return AllocObjectFromCodeResolved<kInstrumented>(klass, self, allocator_type).Ptr();
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} else {
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return AllocObjectFromCode<kInstrumented>(klass, self, allocator_type).Ptr();
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}
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}
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#define GENERATE_ENTRYPOINTS_FOR_ALLOCATOR_INST(suffix, suffix2, instrumented_bool, allocator_type) \
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extern "C" mirror::Object* artAllocObjectFromCodeWithChecks##suffix##suffix2( \
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mirror::Class* klass, Thread* self) \
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REQUIRES_SHARED(Locks::mutator_lock_) { \
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return artAllocObjectFromCode<false, true, instrumented_bool, allocator_type>(klass, self); \
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} \
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extern "C" mirror::Object* artAllocObjectFromCodeResolved##suffix##suffix2( \
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mirror::Class* klass, Thread* self) \
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REQUIRES_SHARED(Locks::mutator_lock_) { \
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return artAllocObjectFromCode<false, false, instrumented_bool, allocator_type>(klass, self); \
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} \
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extern "C" mirror::Object* artAllocObjectFromCodeInitialized##suffix##suffix2( \
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mirror::Class* klass, Thread* self) \
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REQUIRES_SHARED(Locks::mutator_lock_) { \
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return artAllocObjectFromCode<true, false, instrumented_bool, allocator_type>(klass, self); \
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} \
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extern "C" mirror::String* artAllocStringObject##suffix##suffix2( \
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mirror::Class* klass, Thread* self) \
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REQUIRES_SHARED(Locks::mutator_lock_) { \
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/* The klass arg is so it matches the ABI of the other object alloc callbacks. */ \
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DCHECK(klass->IsStringClass()) << klass->PrettyClass(); \
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return mirror::String::AllocEmptyString<instrumented_bool>(self, allocator_type).Ptr(); \
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} \
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extern "C" mirror::Array* artAllocArrayFromCodeResolved##suffix##suffix2( \
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mirror::Class* klass, int32_t component_count, Thread* self) \
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REQUIRES_SHARED(Locks::mutator_lock_) { \
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ScopedQuickEntrypointChecks sqec(self); \
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return AllocArrayFromCodeResolved<instrumented_bool>( \
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klass, component_count, self, allocator_type).Ptr(); \
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} \
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extern "C" mirror::String* artAllocStringFromBytesFromCode##suffix##suffix2( \
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mirror::ByteArray* byte_array, int32_t high, int32_t offset, int32_t byte_count, \
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Thread* self) \
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REQUIRES_SHARED(Locks::mutator_lock_) { \
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ScopedQuickEntrypointChecks sqec(self); \
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StackHandleScope<1> hs(self); \
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Handle<mirror::ByteArray> handle_array(hs.NewHandle(byte_array)); \
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return mirror::String::AllocFromByteArray<instrumented_bool>( \
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self, byte_count, handle_array, offset, high, allocator_type).Ptr(); \
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} \
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extern "C" mirror::String* artAllocStringFromCharsFromCode##suffix##suffix2( \
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int32_t offset, int32_t char_count, mirror::CharArray* char_array, Thread* self) \
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REQUIRES_SHARED(Locks::mutator_lock_) { \
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StackHandleScope<1> hs(self); \
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Handle<mirror::CharArray> handle_array(hs.NewHandle(char_array)); \
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return mirror::String::AllocFromCharArray<instrumented_bool>( \
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self, char_count, handle_array, offset, allocator_type).Ptr(); \
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} \
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extern "C" mirror::String* artAllocStringFromStringFromCode##suffix##suffix2( /* NOLINT */ \
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mirror::String* string, Thread* self) \
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REQUIRES_SHARED(Locks::mutator_lock_) { \
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StackHandleScope<1> hs(self); \
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Handle<mirror::String> handle_string(hs.NewHandle(string)); \
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return mirror::String::AllocFromString<instrumented_bool>( \
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self, handle_string->GetLength(), handle_string, 0, allocator_type).Ptr(); \
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}
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#define GENERATE_ENTRYPOINTS_FOR_ALLOCATOR(suffix, allocator_type) \
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GENERATE_ENTRYPOINTS_FOR_ALLOCATOR_INST(suffix, Instrumented, true, allocator_type) \
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GENERATE_ENTRYPOINTS_FOR_ALLOCATOR_INST(suffix, , false, allocator_type)
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GENERATE_ENTRYPOINTS_FOR_ALLOCATOR(DlMalloc, gc::kAllocatorTypeDlMalloc)
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GENERATE_ENTRYPOINTS_FOR_ALLOCATOR(RosAlloc, gc::kAllocatorTypeRosAlloc)
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GENERATE_ENTRYPOINTS_FOR_ALLOCATOR(BumpPointer, gc::kAllocatorTypeBumpPointer)
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GENERATE_ENTRYPOINTS_FOR_ALLOCATOR(TLAB, gc::kAllocatorTypeTLAB)
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GENERATE_ENTRYPOINTS_FOR_ALLOCATOR(Region, gc::kAllocatorTypeRegion)
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GENERATE_ENTRYPOINTS_FOR_ALLOCATOR(RegionTLAB, gc::kAllocatorTypeRegionTLAB)
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#define GENERATE_ENTRYPOINTS(suffix) \
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extern "C" void* art_quick_alloc_array_resolved##suffix(mirror::Class* klass, int32_t); \
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extern "C" void* art_quick_alloc_array_resolved8##suffix(mirror::Class* klass, int32_t); \
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extern "C" void* art_quick_alloc_array_resolved16##suffix(mirror::Class* klass, int32_t); \
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extern "C" void* art_quick_alloc_array_resolved32##suffix(mirror::Class* klass, int32_t); \
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extern "C" void* art_quick_alloc_array_resolved64##suffix(mirror::Class* klass, int32_t); \
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extern "C" void* art_quick_alloc_object_resolved##suffix(mirror::Class* klass); \
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extern "C" void* art_quick_alloc_object_initialized##suffix(mirror::Class* klass); \
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extern "C" void* art_quick_alloc_object_with_checks##suffix(mirror::Class* klass); \
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extern "C" void* art_quick_alloc_string_object##suffix(mirror::Class* klass); \
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extern "C" void* art_quick_alloc_string_from_bytes##suffix(void*, int32_t, int32_t, int32_t); \
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extern "C" void* art_quick_alloc_string_from_chars##suffix(int32_t, int32_t, void*); \
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extern "C" void* art_quick_alloc_string_from_string##suffix(void*); \
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extern "C" void* art_quick_alloc_array_resolved##suffix##_instrumented(mirror::Class* klass, int32_t); \
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extern "C" void* art_quick_alloc_array_resolved8##suffix##_instrumented(mirror::Class* klass, int32_t); \
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extern "C" void* art_quick_alloc_array_resolved16##suffix##_instrumented(mirror::Class* klass, int32_t); \
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extern "C" void* art_quick_alloc_array_resolved32##suffix##_instrumented(mirror::Class* klass, int32_t); \
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extern "C" void* art_quick_alloc_array_resolved64##suffix##_instrumented(mirror::Class* klass, int32_t); \
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extern "C" void* art_quick_alloc_object_resolved##suffix##_instrumented(mirror::Class* klass); \
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extern "C" void* art_quick_alloc_object_initialized##suffix##_instrumented(mirror::Class* klass); \
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extern "C" void* art_quick_alloc_object_with_checks##suffix##_instrumented(mirror::Class* klass); \
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extern "C" void* art_quick_alloc_string_object##suffix##_instrumented(mirror::Class* klass); \
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extern "C" void* art_quick_alloc_string_from_bytes##suffix##_instrumented(void*, int32_t, int32_t, int32_t); \
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extern "C" void* art_quick_alloc_string_from_chars##suffix##_instrumented(int32_t, int32_t, void*); \
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extern "C" void* art_quick_alloc_string_from_string##suffix##_instrumented(void*); \
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void SetQuickAllocEntryPoints##suffix(QuickEntryPoints* qpoints, bool instrumented) { \
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if (instrumented) { \
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qpoints->SetAllocArrayResolved(art_quick_alloc_array_resolved##suffix##_instrumented); \
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qpoints->SetAllocArrayResolved8(art_quick_alloc_array_resolved8##suffix##_instrumented); \
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qpoints->SetAllocArrayResolved16(art_quick_alloc_array_resolved16##suffix##_instrumented); \
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qpoints->SetAllocArrayResolved32(art_quick_alloc_array_resolved32##suffix##_instrumented); \
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qpoints->SetAllocArrayResolved64(art_quick_alloc_array_resolved64##suffix##_instrumented); \
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qpoints->SetAllocObjectResolved(art_quick_alloc_object_resolved##suffix##_instrumented); \
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qpoints->SetAllocObjectInitialized(art_quick_alloc_object_initialized##suffix##_instrumented); \
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qpoints->SetAllocObjectWithChecks(art_quick_alloc_object_with_checks##suffix##_instrumented); \
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qpoints->SetAllocStringObject(art_quick_alloc_string_object##suffix##_instrumented); \
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qpoints->SetAllocStringFromBytes(art_quick_alloc_string_from_bytes##suffix##_instrumented); \
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qpoints->SetAllocStringFromChars(art_quick_alloc_string_from_chars##suffix##_instrumented); \
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qpoints->SetAllocStringFromString(art_quick_alloc_string_from_string##suffix##_instrumented); \
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} else { \
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qpoints->SetAllocArrayResolved(art_quick_alloc_array_resolved##suffix); \
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qpoints->SetAllocArrayResolved8(art_quick_alloc_array_resolved8##suffix); \
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qpoints->SetAllocArrayResolved16(art_quick_alloc_array_resolved16##suffix); \
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qpoints->SetAllocArrayResolved32(art_quick_alloc_array_resolved32##suffix); \
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qpoints->SetAllocArrayResolved64(art_quick_alloc_array_resolved64##suffix); \
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qpoints->SetAllocObjectResolved(art_quick_alloc_object_resolved##suffix); \
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qpoints->SetAllocObjectInitialized(art_quick_alloc_object_initialized##suffix); \
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qpoints->SetAllocObjectWithChecks(art_quick_alloc_object_with_checks##suffix); \
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qpoints->SetAllocStringObject(art_quick_alloc_string_object##suffix); \
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qpoints->SetAllocStringFromBytes(art_quick_alloc_string_from_bytes##suffix); \
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qpoints->SetAllocStringFromChars(art_quick_alloc_string_from_chars##suffix); \
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qpoints->SetAllocStringFromString(art_quick_alloc_string_from_string##suffix); \
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} \
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}
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// Generate the entrypoint functions.
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#if !defined(__APPLE__) || !defined(__LP64__)
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GENERATE_ENTRYPOINTS(_dlmalloc)
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GENERATE_ENTRYPOINTS(_rosalloc)
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GENERATE_ENTRYPOINTS(_bump_pointer)
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GENERATE_ENTRYPOINTS(_tlab)
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GENERATE_ENTRYPOINTS(_region)
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GENERATE_ENTRYPOINTS(_region_tlab)
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#endif
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static bool entry_points_instrumented = false;
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static gc::AllocatorType entry_points_allocator = gc::kAllocatorTypeDlMalloc;
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void SetQuickAllocEntryPointsAllocator(gc::AllocatorType allocator) {
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entry_points_allocator = allocator;
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}
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void SetQuickAllocEntryPointsInstrumented(bool instrumented) {
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entry_points_instrumented = instrumented;
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}
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void ResetQuickAllocEntryPoints(QuickEntryPoints* qpoints) {
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#if !defined(__APPLE__) || !defined(__LP64__)
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switch (entry_points_allocator) {
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case gc::kAllocatorTypeDlMalloc: {
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SetQuickAllocEntryPoints_dlmalloc(qpoints, entry_points_instrumented);
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return;
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}
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case gc::kAllocatorTypeRosAlloc: {
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SetQuickAllocEntryPoints_rosalloc(qpoints, entry_points_instrumented);
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return;
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}
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case gc::kAllocatorTypeBumpPointer: {
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CHECK(kMovingCollector);
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SetQuickAllocEntryPoints_bump_pointer(qpoints, entry_points_instrumented);
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return;
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}
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case gc::kAllocatorTypeTLAB: {
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CHECK(kMovingCollector);
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SetQuickAllocEntryPoints_tlab(qpoints, entry_points_instrumented);
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return;
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}
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case gc::kAllocatorTypeRegion: {
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CHECK(kMovingCollector);
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SetQuickAllocEntryPoints_region(qpoints, entry_points_instrumented);
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return;
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}
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case gc::kAllocatorTypeRegionTLAB: {
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CHECK(kMovingCollector);
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SetQuickAllocEntryPoints_region_tlab(qpoints, entry_points_instrumented);
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return;
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}
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default:
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break;
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}
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#else
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UNUSED(qpoints);
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#endif
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UNIMPLEMENTED(FATAL);
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UNREACHABLE();
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}
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} // namespace art
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