270 lines
10 KiB
C++
270 lines
10 KiB
C++
/*
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* Copyright (C) 2015 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 "jni.h"
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#include "art_method-inl.h"
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#include "base/enums.h"
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#include "base/logging.h"
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#include "dex_file-inl.h"
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#include "instrumentation.h"
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#include "jit/jit.h"
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#include "jit/jit_code_cache.h"
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#include "jit/profiling_info.h"
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#include "mirror/class-inl.h"
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#include "nativehelper/ScopedUtfChars.h"
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#include "oat_quick_method_header.h"
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#include "runtime.h"
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#include "scoped_thread_state_change-inl.h"
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#include "thread-current-inl.h"
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namespace art {
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// public static native boolean hasJit();
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static jit::Jit* GetJitIfEnabled() {
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Runtime* runtime = Runtime::Current();
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bool can_jit =
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runtime != nullptr
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&& runtime->GetJit() != nullptr
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&& runtime->GetInstrumentation()->GetCurrentInstrumentationLevel() !=
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instrumentation::Instrumentation::InstrumentationLevel::kInstrumentWithInterpreter;
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return can_jit ? runtime->GetJit() : nullptr;
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}
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extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasJit(JNIEnv*, jclass) {
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return GetJitIfEnabled() != nullptr;
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}
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// public static native boolean hasOatFile();
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extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasOatFile(JNIEnv* env, jclass cls) {
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ScopedObjectAccess soa(env);
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ObjPtr<mirror::Class> klass = soa.Decode<mirror::Class>(cls);
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const DexFile& dex_file = klass->GetDexFile();
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const OatFile::OatDexFile* oat_dex_file = dex_file.GetOatDexFile();
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return (oat_dex_file != nullptr) ? JNI_TRUE : JNI_FALSE;
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}
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// public static native boolean runtimeIsSoftFail();
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extern "C" JNIEXPORT jboolean JNICALL Java_Main_runtimeIsSoftFail(JNIEnv* env ATTRIBUTE_UNUSED,
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jclass cls ATTRIBUTE_UNUSED) {
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return Runtime::Current()->IsVerificationSoftFail() ? JNI_TRUE : JNI_FALSE;
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}
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// public static native boolean isDex2OatEnabled();
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extern "C" JNIEXPORT jboolean JNICALL Java_Main_isDex2OatEnabled(JNIEnv* env ATTRIBUTE_UNUSED,
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jclass cls ATTRIBUTE_UNUSED) {
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return Runtime::Current()->IsDex2OatEnabled();
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}
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// public static native boolean hasImage();
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extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasImage(JNIEnv* env ATTRIBUTE_UNUSED,
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jclass cls ATTRIBUTE_UNUSED) {
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return Runtime::Current()->GetHeap()->HasBootImageSpace();
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}
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// public static native boolean isImageDex2OatEnabled();
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extern "C" JNIEXPORT jboolean JNICALL Java_Main_isImageDex2OatEnabled(JNIEnv* env ATTRIBUTE_UNUSED,
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jclass cls ATTRIBUTE_UNUSED) {
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return Runtime::Current()->IsImageDex2OatEnabled();
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}
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// public static native boolean compiledWithOptimizing();
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// Did we use the optimizing compiler to compile this?
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extern "C" JNIEXPORT jboolean JNICALL Java_Main_compiledWithOptimizing(JNIEnv* env, jclass cls) {
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ScopedObjectAccess soa(env);
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ObjPtr<mirror::Class> klass = soa.Decode<mirror::Class>(cls);
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const DexFile& dex_file = klass->GetDexFile();
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const OatFile::OatDexFile* oat_dex_file = dex_file.GetOatDexFile();
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if (oat_dex_file == nullptr) {
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// Could be JIT, which also uses optimizing, but conservatively say no.
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return JNI_FALSE;
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}
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const OatFile* oat_file = oat_dex_file->GetOatFile();
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CHECK(oat_file != nullptr);
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const char* cmd_line = oat_file->GetOatHeader().GetStoreValueByKey(OatHeader::kDex2OatCmdLineKey);
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CHECK(cmd_line != nullptr); // Huh? This should not happen.
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// Check the backend.
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constexpr const char* kCompilerBackend = "--compiler-backend=";
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const char* backend = strstr(cmd_line, kCompilerBackend);
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if (backend != nullptr) {
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// If it's set, make sure it's optimizing.
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backend += strlen(kCompilerBackend);
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if (strncmp(backend, "Optimizing", strlen("Optimizing")) != 0) {
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return JNI_FALSE;
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}
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}
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// Check the filter.
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constexpr const char* kCompilerFilter = "--compiler-filter=";
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const char* filter = strstr(cmd_line, kCompilerFilter);
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if (filter != nullptr) {
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// If it's set, make sure it's not interpret-only|verify-none|verify-at-runtime.
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// Note: The space filter might have an impact on the test, but ignore that for now.
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filter += strlen(kCompilerFilter);
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constexpr const char* kInterpretOnly = "interpret-only";
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constexpr const char* kVerifyNone = "verify-none";
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constexpr const char* kVerifyAtRuntime = "verify-at-runtime";
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if (strncmp(filter, kInterpretOnly, strlen(kInterpretOnly)) == 0 ||
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strncmp(filter, kVerifyNone, strlen(kVerifyNone)) == 0 ||
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strncmp(filter, kVerifyAtRuntime, strlen(kVerifyAtRuntime)) == 0) {
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return JNI_FALSE;
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}
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}
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return JNI_TRUE;
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}
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extern "C" JNIEXPORT jboolean JNICALL Java_Main_isAotCompiled(JNIEnv* env,
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jclass,
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jclass cls,
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jstring method_name) {
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Thread* self = Thread::Current();
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ScopedObjectAccess soa(self);
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ScopedUtfChars chars(env, method_name);
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CHECK(chars.c_str() != nullptr);
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ArtMethod* method = soa.Decode<mirror::Class>(cls)->FindDeclaredDirectMethodByName(
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chars.c_str(), kRuntimePointerSize);
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return method->GetOatMethodQuickCode(kRuntimePointerSize) != nullptr;
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}
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extern "C" JNIEXPORT jboolean JNICALL Java_Main_isJitCompiled(JNIEnv* env,
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jclass,
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jclass cls,
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jstring method_name) {
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jit::Jit* jit = GetJitIfEnabled();
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if (jit == nullptr) {
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return false;
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}
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Thread* self = Thread::Current();
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ScopedObjectAccess soa(self);
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ScopedUtfChars chars(env, method_name);
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CHECK(chars.c_str() != nullptr);
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ArtMethod* method = soa.Decode<mirror::Class>(cls)->FindDeclaredDirectMethodByName(
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chars.c_str(), kRuntimePointerSize);
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return jit->GetCodeCache()->ContainsPc(method->GetEntryPointFromQuickCompiledCode());
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}
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extern "C" JNIEXPORT void JNICALL Java_Main_ensureJitCompiled(JNIEnv* env,
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jclass,
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jclass cls,
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jstring method_name) {
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jit::Jit* jit = GetJitIfEnabled();
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if (jit == nullptr) {
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return;
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}
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Thread* self = Thread::Current();
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ArtMethod* method = nullptr;
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{
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ScopedObjectAccess soa(self);
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ScopedUtfChars chars(env, method_name);
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CHECK(chars.c_str() != nullptr);
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method = soa.Decode<mirror::Class>(cls)->FindDeclaredDirectMethodByName(
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chars.c_str(), kRuntimePointerSize);
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if (method == nullptr) {
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method = soa.Decode<mirror::Class>(cls)->FindDeclaredVirtualMethodByName(
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chars.c_str(), kRuntimePointerSize);
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}
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DCHECK(method != nullptr) << "Unable to find method called " << chars.c_str();
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}
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jit::JitCodeCache* code_cache = jit->GetCodeCache();
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// Update the code cache to make sure the JIT code does not get deleted.
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// Note: this will apply to all JIT compilations.
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code_cache->SetGarbageCollectCode(false);
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while (true) {
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const void* pc = method->GetEntryPointFromQuickCompiledCode();
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if (code_cache->ContainsPc(pc)) {
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break;
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} else {
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// Sleep to yield to the compiler thread.
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usleep(1000);
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ScopedObjectAccess soa(self);
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// Make sure there is a profiling info, required by the compiler.
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ProfilingInfo::Create(self, method, /* retry_allocation */ true);
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// Will either ensure it's compiled or do the compilation itself.
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jit->CompileMethod(method, self, /* osr */ false);
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}
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}
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}
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extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasSingleImplementation(JNIEnv* env,
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jclass,
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jclass cls,
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jstring method_name) {
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ArtMethod* method = nullptr;
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ScopedObjectAccess soa(Thread::Current());
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ScopedUtfChars chars(env, method_name);
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CHECK(chars.c_str() != nullptr);
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method = soa.Decode<mirror::Class>(cls)->FindDeclaredVirtualMethodByName(
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chars.c_str(), kRuntimePointerSize);
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return method->HasSingleImplementation();
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}
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extern "C" JNIEXPORT int JNICALL Java_Main_getHotnessCounter(JNIEnv* env,
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jclass,
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jclass cls,
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jstring method_name) {
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jit::Jit* jit = Runtime::Current()->GetJit();
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if (jit == nullptr) {
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// The hotness counter is valid only under JIT.
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// If we don't JIT return 0 to match test expectations.
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return 0;
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}
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ArtMethod* method = nullptr;
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{
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ScopedObjectAccess soa(Thread::Current());
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ScopedUtfChars chars(env, method_name);
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CHECK(chars.c_str() != nullptr);
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method = soa.Decode<mirror::Class>(cls)->FindDeclaredDirectMethodByName(
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chars.c_str(), kRuntimePointerSize);
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}
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return method->GetCounter();
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}
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extern "C" JNIEXPORT int JNICALL Java_Main_numberOfDeoptimizations(JNIEnv*, jclass) {
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return Runtime::Current()->GetNumberOfDeoptimizations();
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}
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extern "C" JNIEXPORT void JNICALL Java_Main_fetchProfiles(JNIEnv*, jclass) {
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jit::Jit* jit = GetJitIfEnabled();
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if (jit == nullptr) {
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return;
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}
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jit::JitCodeCache* code_cache = jit->GetCodeCache();
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std::vector<ProfileMethodInfo> unused_vector;
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std::set<std::string> unused_locations;
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unused_locations.insert("fake_location");
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ScopedObjectAccess soa(Thread::Current());
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code_cache->GetProfiledMethods(unused_locations, unused_vector);
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}
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} // namespace art
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