| /* |
| * Copyright (C) 2015 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 "jni.h" |
| |
| #include <android-base/logging.h> |
| #include <android-base/macros.h> |
| #include <sys/resource.h> |
| |
| #include "art_field.h" |
| #include "art_method-inl.h" |
| #include "base/enums.h" |
| #include "common_throws.h" |
| #include "dex/dex_file-inl.h" |
| #include "instrumentation.h" |
| #include "jit/jit.h" |
| #include "jit/jit_code_cache.h" |
| #include "jit/profiling_info.h" |
| #include "jni/jni_internal.h" |
| #include "mirror/class-inl.h" |
| #include "mirror/class.h" |
| #include "nativehelper/ScopedUtfChars.h" |
| #include "oat.h" |
| #include "oat_file.h" |
| #include "oat_quick_method_header.h" |
| #include "profile/profile_compilation_info.h" |
| #include "runtime.h" |
| #include "scoped_thread_state_change-inl.h" |
| #include "scoped_thread_state_change.h" |
| #include "thread-current-inl.h" |
| |
| namespace art { |
| |
| // public static native boolean hasJit(); |
| |
| static jit::Jit* GetJitIfEnabled() { |
| Runtime* runtime = Runtime::Current(); |
| bool can_jit = |
| runtime != nullptr |
| && runtime->GetJit() != nullptr |
| && runtime->GetInstrumentation()->GetCurrentInstrumentationLevel() != |
| instrumentation::Instrumentation::InstrumentationLevel::kInstrumentWithInterpreter; |
| return can_jit ? runtime->GetJit() : nullptr; |
| } |
| |
| extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasJit(JNIEnv*, jclass) { |
| return GetJitIfEnabled() != nullptr; |
| } |
| |
| // public static native boolean hasOatFile(); |
| |
| extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasOatFile(JNIEnv* env, jclass cls) { |
| ScopedObjectAccess soa(env); |
| |
| ObjPtr<mirror::Class> klass = soa.Decode<mirror::Class>(cls); |
| const DexFile& dex_file = klass->GetDexFile(); |
| const OatDexFile* oat_dex_file = dex_file.GetOatDexFile(); |
| return (oat_dex_file != nullptr) ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| extern "C" JNIEXPORT jobject JNICALL Java_Main_getCompilerFilter(JNIEnv* env, |
| jclass caller ATTRIBUTE_UNUSED, |
| jclass cls) { |
| ScopedObjectAccess soa(env); |
| |
| ObjPtr<mirror::Class> klass = soa.Decode<mirror::Class>(cls); |
| const DexFile& dex_file = klass->GetDexFile(); |
| const OatDexFile* oat_dex_file = dex_file.GetOatDexFile(); |
| if (oat_dex_file == nullptr) { |
| return nullptr; |
| } |
| |
| std::string filter = |
| CompilerFilter::NameOfFilter(oat_dex_file->GetOatFile()->GetCompilerFilter()); |
| return soa.AddLocalReference<jobject>( |
| mirror::String::AllocFromModifiedUtf8(soa.Self(), filter.c_str())); |
| } |
| |
| // public static native boolean runtimeIsSoftFail(); |
| |
| extern "C" JNIEXPORT jboolean JNICALL Java_Main_runtimeIsSoftFail(JNIEnv* env ATTRIBUTE_UNUSED, |
| jclass cls ATTRIBUTE_UNUSED) { |
| return Runtime::Current()->IsVerificationSoftFail() ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| // public static native boolean hasImage(); |
| |
| extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasImage(JNIEnv* env ATTRIBUTE_UNUSED, |
| jclass cls ATTRIBUTE_UNUSED) { |
| return Runtime::Current()->GetHeap()->HasBootImageSpace(); |
| } |
| |
| // public static native boolean isImageDex2OatEnabled(); |
| |
| extern "C" JNIEXPORT jboolean JNICALL Java_Main_isImageDex2OatEnabled(JNIEnv* env ATTRIBUTE_UNUSED, |
| jclass cls ATTRIBUTE_UNUSED) { |
| return Runtime::Current()->IsImageDex2OatEnabled(); |
| } |
| |
| // public static native boolean compiledWithOptimizing(); |
| // Did we use the optimizing compiler to compile this? |
| |
| extern "C" JNIEXPORT jboolean JNICALL Java_Main_compiledWithOptimizing(JNIEnv* env, jclass cls) { |
| ScopedObjectAccess soa(env); |
| |
| ObjPtr<mirror::Class> klass = soa.Decode<mirror::Class>(cls); |
| const DexFile& dex_file = klass->GetDexFile(); |
| const OatDexFile* oat_dex_file = dex_file.GetOatDexFile(); |
| if (oat_dex_file == nullptr) { |
| // Could be JIT, which also uses optimizing, but conservatively say no. |
| return JNI_FALSE; |
| } |
| const OatFile* oat_file = oat_dex_file->GetOatFile(); |
| CHECK(oat_file != nullptr); |
| |
| const char* cmd_line = oat_file->GetOatHeader().GetStoreValueByKey(OatHeader::kDex2OatCmdLineKey); |
| if (cmd_line == nullptr) { |
| // Vdex-only execution, conservatively say no. |
| return JNI_FALSE; |
| } |
| |
| // Check the backend. |
| constexpr const char* kCompilerBackend = "--compiler-backend="; |
| const char* backend = strstr(cmd_line, kCompilerBackend); |
| if (backend != nullptr) { |
| // If it's set, make sure it's optimizing. |
| backend += strlen(kCompilerBackend); |
| if (strncmp(backend, "Optimizing", strlen("Optimizing")) != 0) { |
| return JNI_FALSE; |
| } |
| } |
| |
| // Check the filter. |
| constexpr const char* kCompilerFilter = "--compiler-filter="; |
| const char* filter = strstr(cmd_line, kCompilerFilter); |
| if (filter != nullptr) { |
| filter += strlen(kCompilerFilter); |
| const char* end = strchr(filter, ' '); |
| std::string string_filter(filter, (end == nullptr) ? strlen(filter) : end - filter); |
| CompilerFilter::Filter compiler_filter; |
| bool success = CompilerFilter::ParseCompilerFilter(string_filter.c_str(), &compiler_filter); |
| CHECK(success); |
| return CompilerFilter::IsAotCompilationEnabled(compiler_filter) ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| // No filter passed, assume default has AOT. |
| return JNI_TRUE; |
| } |
| |
| extern "C" JNIEXPORT jboolean JNICALL Java_Main_isAotCompiled(JNIEnv* env, |
| jclass, |
| jclass cls, |
| jstring method_name) { |
| Thread* self = Thread::Current(); |
| ScopedObjectAccess soa(self); |
| ScopedUtfChars chars(env, method_name); |
| CHECK(chars.c_str() != nullptr); |
| ArtMethod* method = soa.Decode<mirror::Class>(cls)->FindDeclaredDirectMethodByName( |
| chars.c_str(), kRuntimePointerSize); |
| const void* oat_code = method->GetOatMethodQuickCode(kRuntimePointerSize); |
| if (oat_code == nullptr) { |
| return false; |
| } |
| const void* actual_code = Runtime::Current()->GetInstrumentation()->GetCodeForInvoke(method); |
| return actual_code == oat_code; |
| } |
| |
| static ArtMethod* GetMethod(ScopedObjectAccess& soa, jclass cls, const ScopedUtfChars& chars) |
| REQUIRES_SHARED(Locks::mutator_lock_) { |
| CHECK(chars.c_str() != nullptr); |
| ArtMethod* method = soa.Decode<mirror::Class>(cls)->FindDeclaredDirectMethodByName( |
| chars.c_str(), kRuntimePointerSize); |
| if (method == nullptr) { |
| method = soa.Decode<mirror::Class>(cls)->FindDeclaredVirtualMethodByName( |
| chars.c_str(), kRuntimePointerSize); |
| } |
| DCHECK(method != nullptr) << "Unable to find method called " << chars.c_str(); |
| return method; |
| } |
| |
| extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasJitCompiledEntrypoint(JNIEnv* env, |
| jclass, |
| jclass cls, |
| jstring method_name) { |
| jit::Jit* jit = GetJitIfEnabled(); |
| if (jit == nullptr) { |
| return false; |
| } |
| Thread* self = Thread::Current(); |
| ScopedObjectAccess soa(self); |
| ScopedUtfChars chars(env, method_name); |
| ArtMethod* method = GetMethod(soa, cls, chars); |
| ScopedAssertNoThreadSuspension sants(__FUNCTION__); |
| return jit->GetCodeCache()->ContainsPc( |
| Runtime::Current()->GetInstrumentation()->GetCodeForInvoke(method)); |
| } |
| |
| extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasJitCompiledCode(JNIEnv* env, |
| jclass, |
| jclass cls, |
| jstring method_name) { |
| jit::Jit* jit = GetJitIfEnabled(); |
| if (jit == nullptr) { |
| return false; |
| } |
| Thread* self = Thread::Current(); |
| ScopedObjectAccess soa(self); |
| ScopedUtfChars chars(env, method_name); |
| ArtMethod* method = GetMethod(soa, cls, chars); |
| return jit->GetCodeCache()->ContainsMethod(method); |
| } |
| |
| static void ForceJitCompiled(Thread* self, |
| ArtMethod* method, |
| CompilationKind kind) REQUIRES(!Locks::mutator_lock_) { |
| // TODO(mythria): Update this check once we support method entry / exit hooks directly from |
| // JIT code instead of installing EntryExit stubs. |
| if (Runtime::Current()->GetInstrumentation()->EntryExitStubsInstalled() && |
| (method->IsNative() || !Runtime::Current()->IsJavaDebuggable())) { |
| return; |
| } |
| |
| { |
| ScopedObjectAccess soa(self); |
| if (Runtime::Current()->GetInstrumentation()->IsDeoptimized(method)) { |
| std::string msg(method->PrettyMethod()); |
| msg += ": is not safe to jit!"; |
| ThrowIllegalStateException(msg.c_str()); |
| return; |
| } |
| // We force visible initialization of the declaring class to make sure the method |
| // doesn't keep the resolution stub as entrypoint. |
| StackHandleScope<1> hs(self); |
| Handle<mirror::Class> h_klass(hs.NewHandle(method->GetDeclaringClass())); |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| if (!class_linker->EnsureInitialized(self, h_klass, true, true)) { |
| self->AssertPendingException(); |
| return; |
| } |
| if (UNLIKELY(!h_klass->IsInitialized())) { |
| // Must be initializing in this thread. |
| CHECK_EQ(h_klass->GetStatus(), ClassStatus::kInitializing); |
| CHECK_EQ(h_klass->GetClinitThreadId(), self->GetTid()); |
| std::string msg(method->PrettyMethod()); |
| msg += ": is not safe to jit because the class is being initialized in this thread!"; |
| ThrowIllegalStateException(msg.c_str()); |
| return; |
| } |
| if (!h_klass->IsVisiblyInitialized()) { |
| ScopedThreadSuspension sts(self, ThreadState::kNative); |
| class_linker->MakeInitializedClassesVisiblyInitialized(self, /*wait=*/ true); |
| } |
| } |
| jit::Jit* jit = GetJitIfEnabled(); |
| jit::JitCodeCache* code_cache = jit->GetCodeCache(); |
| // Update the code cache to make sure the JIT code does not get deleted. |
| // Note: this will apply to all JIT compilations. |
| code_cache->SetGarbageCollectCode(false); |
| do { |
| // Sleep to yield to the compiler thread. |
| usleep(1000); |
| ScopedObjectAccess soa(self); |
| // Will either ensure it's compiled or do the compilation itself. We do |
| // this before checking if we will execute JIT code in case the request |
| // is for an 'optimized' compilation. |
| jit->CompileMethod(method, self, kind, /*prejit=*/ false); |
| const void* entry_point = method->GetEntryPointFromQuickCompiledCode(); |
| if (code_cache->ContainsPc(entry_point)) { |
| // If we're running baseline or not requesting optimized, we're good to go. |
| if (jit->GetJitCompiler()->IsBaselineCompiler() || kind != CompilationKind::kOptimized) { |
| break; |
| } |
| // If we're requesting optimized, check that we did get the method |
| // compiled optimized. |
| OatQuickMethodHeader* method_header = OatQuickMethodHeader::FromEntryPoint(entry_point); |
| if (!CodeInfo::IsBaseline(method_header->GetOptimizedCodeInfoPtr())) { |
| break; |
| } |
| } |
| } while (true); |
| } |
| |
| extern "C" JNIEXPORT void JNICALL Java_Main_ensureMethodJitCompiled(JNIEnv*, jclass, jobject meth) { |
| jit::Jit* jit = GetJitIfEnabled(); |
| if (jit == nullptr) { |
| return; |
| } |
| |
| Thread* self = Thread::Current(); |
| ArtMethod* method; |
| { |
| ScopedObjectAccess soa(self); |
| method = ArtMethod::FromReflectedMethod(soa, meth); |
| } |
| ForceJitCompiled(self, method, CompilationKind::kOptimized); |
| } |
| |
| extern "C" JNIEXPORT void JNICALL Java_Main_ensureJitCompiled(JNIEnv* env, |
| jclass, |
| jclass cls, |
| jstring method_name) { |
| jit::Jit* jit = GetJitIfEnabled(); |
| if (jit == nullptr) { |
| return; |
| } |
| |
| Thread* self = Thread::Current(); |
| ArtMethod* method = nullptr; |
| { |
| ScopedObjectAccess soa(self); |
| |
| ScopedUtfChars chars(env, method_name); |
| method = GetMethod(soa, cls, chars); |
| } |
| ForceJitCompiled(self, method, CompilationKind::kOptimized); |
| } |
| |
| extern "C" JNIEXPORT void JNICALL Java_Main_ensureJitBaselineCompiled(JNIEnv* env, |
| jclass, |
| jclass cls, |
| jstring method_name) { |
| jit::Jit* jit = GetJitIfEnabled(); |
| if (jit == nullptr) { |
| return; |
| } |
| |
| Thread* self = Thread::Current(); |
| ArtMethod* method = nullptr; |
| { |
| ScopedObjectAccess soa(self); |
| |
| ScopedUtfChars chars(env, method_name); |
| method = GetMethod(soa, cls, chars); |
| } |
| ForceJitCompiled(self, method, CompilationKind::kBaseline); |
| } |
| |
| extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasSingleImplementation(JNIEnv* env, |
| jclass, |
| jclass cls, |
| jstring method_name) { |
| ArtMethod* method = nullptr; |
| ScopedObjectAccess soa(Thread::Current()); |
| ScopedUtfChars chars(env, method_name); |
| CHECK(chars.c_str() != nullptr); |
| method = soa.Decode<mirror::Class>(cls)->FindDeclaredVirtualMethodByName( |
| chars.c_str(), kRuntimePointerSize); |
| return method->HasSingleImplementation(); |
| } |
| |
| extern "C" JNIEXPORT int JNICALL Java_Main_getHotnessCounter(JNIEnv* env, |
| jclass, |
| jclass cls, |
| jstring method_name) { |
| ScopedObjectAccess soa(Thread::Current()); |
| ScopedUtfChars chars(env, method_name); |
| CHECK(chars.c_str() != nullptr); |
| ArtMethod* method = |
| soa.Decode<mirror::Class>(cls)->FindDeclaredDirectMethodByName(chars.c_str(), |
| kRuntimePointerSize); |
| if (method != nullptr) { |
| return method->GetCounter(); |
| } |
| |
| method = soa.Decode<mirror::Class>(cls)->FindDeclaredVirtualMethodByName(chars.c_str(), |
| kRuntimePointerSize); |
| if (method != nullptr) { |
| return method->GetCounter(); |
| } |
| |
| return std::numeric_limits<int32_t>::min(); |
| } |
| |
| extern "C" JNIEXPORT int JNICALL Java_Main_numberOfDeoptimizations(JNIEnv*, jclass) { |
| return Runtime::Current()->GetNumberOfDeoptimizations(); |
| } |
| |
| extern "C" JNIEXPORT void JNICALL Java_Main_fetchProfiles(JNIEnv*, jclass) { |
| jit::Jit* jit = GetJitIfEnabled(); |
| if (jit == nullptr) { |
| return; |
| } |
| jit::JitCodeCache* code_cache = jit->GetCodeCache(); |
| std::vector<ProfileMethodInfo> unused_vector; |
| std::set<std::string> unused_locations; |
| unused_locations.insert("fake_location"); |
| ScopedObjectAccess soa(Thread::Current()); |
| code_cache->GetProfiledMethods(unused_locations, unused_vector); |
| } |
| |
| extern "C" JNIEXPORT void JNICALL Java_Main_waitForCompilation(JNIEnv*, jclass) { |
| jit::Jit* jit = Runtime::Current()->GetJit(); |
| if (jit != nullptr) { |
| jit->WaitForCompilationToFinish(Thread::Current()); |
| } |
| } |
| |
| extern "C" JNIEXPORT void JNICALL Java_Main_stopJit(JNIEnv*, jclass) { |
| jit::Jit* jit = Runtime::Current()->GetJit(); |
| if (jit != nullptr) { |
| jit->Stop(); |
| } |
| } |
| |
| extern "C" JNIEXPORT void JNICALL Java_Main_startJit(JNIEnv*, jclass) { |
| jit::Jit* jit = Runtime::Current()->GetJit(); |
| if (jit != nullptr) { |
| jit->Start(); |
| } |
| } |
| |
| extern "C" JNIEXPORT jint JNICALL Java_Main_getJitThreshold(JNIEnv*, jclass) { |
| jit::Jit* jit = Runtime::Current()->GetJit(); |
| return (jit != nullptr) ? jit->HotMethodThreshold() : 0; |
| } |
| |
| extern "C" JNIEXPORT void JNICALL Java_Main_deoptimizeBootImage(JNIEnv*, jclass) { |
| ScopedSuspendAll ssa(__FUNCTION__); |
| Runtime::Current()->DeoptimizeBootImage(); |
| } |
| |
| extern "C" JNIEXPORT jboolean JNICALL Java_Main_isDebuggable(JNIEnv*, jclass) { |
| return Runtime::Current()->IsJavaDebuggable() ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| extern "C" JNIEXPORT void JNICALL Java_Main_setTargetSdkVersion(JNIEnv*, jclass, jint version) { |
| Runtime::Current()->SetTargetSdkVersion(static_cast<uint32_t>(version)); |
| } |
| |
| extern "C" JNIEXPORT jlong JNICALL Java_Main_genericFieldOffset(JNIEnv* env, jclass, jobject fld) { |
| jfieldID fid = env->FromReflectedField(fld); |
| ScopedObjectAccess soa(env); |
| ArtField* af = jni::DecodeArtField(fid); |
| return af->GetOffset().Int32Value(); |
| } |
| |
| extern "C" JNIEXPORT jboolean JNICALL Java_Main_isObsoleteObject(JNIEnv* env, jclass, jclass c) { |
| ScopedObjectAccess soa(env); |
| return soa.Decode<mirror::Class>(c)->IsObsoleteObject(); |
| } |
| |
| extern "C" JNIEXPORT void JNICALL Java_Main_forceInterpreterOnThread(JNIEnv* env, |
| jclass cls ATTRIBUTE_UNUSED) { |
| ScopedObjectAccess soa(env); |
| MutexLock thread_list_mu(soa.Self(), *Locks::thread_list_lock_); |
| soa.Self()->IncrementForceInterpreterCount(); |
| } |
| |
| extern "C" JNIEXPORT void JNICALL Java_Main_setAsyncExceptionsThrown(JNIEnv* env ATTRIBUTE_UNUSED, |
| jclass cls ATTRIBUTE_UNUSED) { |
| Runtime::Current()->SetAsyncExceptionsThrown(); |
| } |
| |
| extern "C" JNIEXPORT void JNICALL Java_Main_setRlimitNoFile(JNIEnv*, jclass, jint value) { |
| rlimit limit { static_cast<rlim_t>(value), static_cast<rlim_t>(value) }; |
| setrlimit(RLIMIT_NOFILE, &limit); |
| } |
| |
| } // namespace art |
