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 "mirror/class-inl.h" 22 #include "nth_caller_visitor.h" 23 #include "runtime.h" 24 #include "scoped_thread_state_change.h" 25 #include "stack.h" 26 #include "thread-inl.h" 27 28 namespace art { 29 30 static bool asserts_enabled = true; 31 32 // public static native void disableStackFrameAsserts(); 33 // Note: to globally disable asserts in unsupported configurations. 34 35 extern "C" JNIEXPORT void JNICALL Java_Main_disableStackFrameAsserts(JNIEnv* env ATTRIBUTE_UNUSED, 36 jclass cls ATTRIBUTE_UNUSED) { 37 asserts_enabled = false; 38 } 39 40 41 // public static native boolean isInterpreted(); 42 43 extern "C" JNIEXPORT jboolean JNICALL Java_Main_isInterpreted(JNIEnv* env, jclass) { 44 ScopedObjectAccess soa(env); 45 NthCallerVisitor caller(soa.Self(), 1, false); 46 caller.WalkStack(); 47 CHECK(caller.caller != nullptr); 48 return caller.GetCurrentShadowFrame() != nullptr ? JNI_TRUE : JNI_FALSE; 49 } 50 51 // public static native void assertIsInterpreted(); 52 53 extern "C" JNIEXPORT void JNICALL Java_Main_assertIsInterpreted(JNIEnv* env, jclass klass) { 54 if (asserts_enabled) { 55 CHECK(Java_Main_isInterpreted(env, klass)); 56 } 57 } 58 59 60 // public static native boolean isManaged(); 61 62 extern "C" JNIEXPORT jboolean JNICALL Java_Main_isManaged(JNIEnv* env, jclass cls) { 63 ScopedObjectAccess soa(env); 64 65 mirror::Class* klass = soa.Decode<mirror::Class*>(cls); 66 const DexFile& dex_file = klass->GetDexFile(); 67 const OatFile::OatDexFile* oat_dex_file = dex_file.GetOatDexFile(); 68 if (oat_dex_file == nullptr) { 69 // No oat file, this must be a test configuration that doesn't compile at all. Ignore that the 70 // result will be that we're running the interpreter. 71 return JNI_FALSE; 72 } 73 74 NthCallerVisitor caller(soa.Self(), 1, false); 75 caller.WalkStack(); 76 CHECK(caller.caller != nullptr); 77 78 return caller.GetCurrentShadowFrame() != nullptr ? JNI_FALSE : JNI_TRUE; 79 } 80 81 // public static native void assertIsManaged(); 82 83 extern "C" JNIEXPORT void JNICALL Java_Main_assertIsManaged(JNIEnv* env, jclass cls) { 84 if (asserts_enabled) { 85 CHECK(Java_Main_isManaged(env, cls)); 86 } 87 } 88 89 } // namespace art 90
