1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "jni.h" 18 19 #include "base/logging.h" 20 #include "dex_file-inl.h" 21 #include "jit/jit.h" 22 #include "jit/jit_code_cache.h" 23 #include "mirror/class-inl.h" 24 #include "nth_caller_visitor.h" 25 #include "oat_quick_method_header.h" 26 #include "runtime.h" 27 #include "scoped_thread_state_change.h" 28 #include "ScopedUtfChars.h" 29 #include "stack.h" 30 #include "thread-inl.h" 31 32 namespace art { 33 34 // public static native boolean hasOatFile(); 35 36 extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasOatFile(JNIEnv* env, jclass cls) { 37 ScopedObjectAccess soa(env); 38 39 mirror::Class* klass = soa.Decode<mirror::Class*>(cls); 40 const DexFile& dex_file = klass->GetDexFile(); 41 const OatFile::OatDexFile* oat_dex_file = dex_file.GetOatDexFile(); 42 return (oat_dex_file != nullptr) ? JNI_TRUE : JNI_FALSE; 43 } 44 45 // public static native boolean runtimeIsSoftFail(); 46 47 extern "C" JNIEXPORT jboolean JNICALL Java_Main_runtimeIsSoftFail(JNIEnv* env ATTRIBUTE_UNUSED, 48 jclass cls ATTRIBUTE_UNUSED) { 49 return Runtime::Current()->IsVerificationSoftFail() ? JNI_TRUE : JNI_FALSE; 50 } 51 52 // public static native boolean isDex2OatEnabled(); 53 54 extern "C" JNIEXPORT jboolean JNICALL Java_Main_isDex2OatEnabled(JNIEnv* env ATTRIBUTE_UNUSED, 55 jclass cls ATTRIBUTE_UNUSED) { 56 return Runtime::Current()->IsDex2OatEnabled(); 57 } 58 59 // public static native boolean hasImage(); 60 61 extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasImage(JNIEnv* env ATTRIBUTE_UNUSED, 62 jclass cls ATTRIBUTE_UNUSED) { 63 return Runtime::Current()->GetHeap()->HasBootImageSpace(); 64 } 65 66 // public static native boolean isImageDex2OatEnabled(); 67 68 extern "C" JNIEXPORT jboolean JNICALL Java_Main_isImageDex2OatEnabled(JNIEnv* env ATTRIBUTE_UNUSED, 69 jclass cls ATTRIBUTE_UNUSED) { 70 return Runtime::Current()->IsImageDex2OatEnabled(); 71 } 72 73 // public static native boolean compiledWithOptimizing(); 74 // Did we use the optimizing compiler to compile this? 75 76 extern "C" JNIEXPORT jboolean JNICALL Java_Main_compiledWithOptimizing(JNIEnv* env, jclass cls) { 77 ScopedObjectAccess soa(env); 78 79 mirror::Class* klass = soa.Decode<mirror::Class*>(cls); 80 const DexFile& dex_file = klass->GetDexFile(); 81 const OatFile::OatDexFile* oat_dex_file = dex_file.GetOatDexFile(); 82 if (oat_dex_file == nullptr) { 83 // Could be JIT, which also uses optimizing, but conservatively say no. 84 return JNI_FALSE; 85 } 86 const OatFile* oat_file = oat_dex_file->GetOatFile(); 87 CHECK(oat_file != nullptr); 88 89 const char* cmd_line = oat_file->GetOatHeader().GetStoreValueByKey(OatHeader::kDex2OatCmdLineKey); 90 CHECK(cmd_line != nullptr); // Huh? This should not happen. 91 92 // Check the backend. 93 constexpr const char* kCompilerBackend = "--compiler-backend="; 94 const char* backend = strstr(cmd_line, kCompilerBackend); 95 if (backend != nullptr) { 96 // If it's set, make sure it's optimizing. 97 backend += strlen(kCompilerBackend); 98 if (strncmp(backend, "Optimizing", strlen("Optimizing")) != 0) { 99 return JNI_FALSE; 100 } 101 } 102 103 // Check the filter. 104 constexpr const char* kCompilerFilter = "--compiler-filter="; 105 const char* filter = strstr(cmd_line, kCompilerFilter); 106 if (filter != nullptr) { 107 // If it's set, make sure it's not interpret-only|verify-none|verify-at-runtime. 108 // Note: The space filter might have an impact on the test, but ignore that for now. 109 filter += strlen(kCompilerFilter); 110 constexpr const char* kInterpretOnly = "interpret-only"; 111 constexpr const char* kVerifyNone = "verify-none"; 112 constexpr const char* kVerifyAtRuntime = "verify-at-runtime"; 113 if (strncmp(filter, kInterpretOnly, strlen(kInterpretOnly)) == 0 || 114 strncmp(filter, kVerifyNone, strlen(kVerifyNone)) == 0 || 115 strncmp(filter, kVerifyAtRuntime, strlen(kVerifyAtRuntime)) == 0) { 116 return JNI_FALSE; 117 } 118 } 119 120 return JNI_TRUE; 121 } 122 123 extern "C" JNIEXPORT void JNICALL Java_Main_ensureJitCompiled(JNIEnv* env, 124 jclass, 125 jclass cls, 126 jstring method_name) { 127 jit::Jit* jit = Runtime::Current()->GetJit(); 128 if (jit == nullptr) { 129 return; 130 } 131 132 ScopedObjectAccess soa(Thread::Current()); 133 134 ScopedUtfChars chars(env, method_name); 135 CHECK(chars.c_str() != nullptr); 136 137 mirror::Class* klass = soa.Decode<mirror::Class*>(cls); 138 ArtMethod* method = klass->FindDeclaredDirectMethodByName(chars.c_str(), sizeof(void*)); 139 140 jit::JitCodeCache* code_cache = jit->GetCodeCache(); 141 OatQuickMethodHeader* header = nullptr; 142 // Make sure there is a profiling info, required by the compiler. 143 ProfilingInfo::Create(soa.Self(), method, /* retry_allocation */ true); 144 while (true) { 145 header = OatQuickMethodHeader::FromEntryPoint(method->GetEntryPointFromQuickCompiledCode()); 146 if (code_cache->ContainsPc(header->GetCode())) { 147 break; 148 } else { 149 // Sleep to yield to the compiler thread. 150 usleep(1000); 151 // Will either ensure it's compiled or do the compilation itself. 152 jit->CompileMethod(method, soa.Self(), /* osr */ false); 153 } 154 } 155 } 156 157 } // namespace art 158
