109 lines
4 KiB
C++
109 lines
4 KiB
C++
/*
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* Copyright (C) 2013 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 "verification_results.h"
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#include "base/logging.h"
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#include "base/stl_util.h"
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#include "base/mutex-inl.h"
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#include "driver/compiler_driver.h"
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#include "driver/compiler_options.h"
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#include "thread.h"
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#include "thread-inl.h"
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#include "verified_method.h"
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#include "verifier/method_verifier-inl.h"
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namespace art {
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VerificationResults::VerificationResults(const CompilerOptions* compiler_options)
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: compiler_options_(compiler_options),
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verified_methods_lock_("compiler verified methods lock"),
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verified_methods_(),
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rejected_classes_lock_("compiler rejected classes lock"),
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rejected_classes_() {
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}
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VerificationResults::~VerificationResults() {
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Thread* self = Thread::Current();
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{
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WriterMutexLock mu(self, verified_methods_lock_);
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STLDeleteValues(&verified_methods_);
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}
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}
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void VerificationResults::ProcessVerifiedMethod(verifier::MethodVerifier* method_verifier) {
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DCHECK(method_verifier != nullptr);
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MethodReference ref = method_verifier->GetMethodReference();
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bool compile = IsCandidateForCompilation(ref, method_verifier->GetAccessFlags());
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const VerifiedMethod* verified_method = VerifiedMethod::Create(method_verifier, compile);
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if (verified_method == nullptr) {
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// We'll punt this later.
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return;
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}
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WriterMutexLock mu(Thread::Current(), verified_methods_lock_);
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auto it = verified_methods_.find(ref);
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if (it != verified_methods_.end()) {
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// TODO: Investigate why are we doing the work again for this method and try to avoid it.
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LOG(WARNING) << "Method processed more than once: "
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<< PrettyMethod(ref.dex_method_index, *ref.dex_file);
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if (!Runtime::Current()->UseJitCompilation()) {
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DCHECK_EQ(it->second->GetDevirtMap().size(), verified_method->GetDevirtMap().size());
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DCHECK_EQ(it->second->GetSafeCastSet().size(), verified_method->GetSafeCastSet().size());
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}
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// Delete the new verified method since there was already an existing one registered. It
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// is unsafe to replace the existing one since the JIT may be using it to generate a
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// native GC map.
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delete verified_method;
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return;
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}
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verified_methods_.Put(ref, verified_method);
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DCHECK(verified_methods_.find(ref) != verified_methods_.end());
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}
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const VerifiedMethod* VerificationResults::GetVerifiedMethod(MethodReference ref) {
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ReaderMutexLock mu(Thread::Current(), verified_methods_lock_);
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auto it = verified_methods_.find(ref);
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return (it != verified_methods_.end()) ? it->second : nullptr;
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}
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void VerificationResults::AddRejectedClass(ClassReference ref) {
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{
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WriterMutexLock mu(Thread::Current(), rejected_classes_lock_);
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rejected_classes_.insert(ref);
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}
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DCHECK(IsClassRejected(ref));
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}
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bool VerificationResults::IsClassRejected(ClassReference ref) {
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ReaderMutexLock mu(Thread::Current(), rejected_classes_lock_);
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return (rejected_classes_.find(ref) != rejected_classes_.end());
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}
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bool VerificationResults::IsCandidateForCompilation(MethodReference&,
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const uint32_t access_flags) {
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if (!compiler_options_->IsBytecodeCompilationEnabled()) {
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return false;
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}
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// Don't compile class initializers unless kEverything.
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if ((compiler_options_->GetCompilerFilter() != CompilerFilter::kEverything) &&
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((access_flags & kAccConstructor) != 0) && ((access_flags & kAccStatic) != 0)) {
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return false;
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}
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return true;
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}
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} // namespace art
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