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
Java_Main_disableStackFrameAsserts(JNIEnv * env ATTRIBUTE_UNUSED,jclass cls ATTRIBUTE_UNUSED)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
Java_Main_isInterpreted(JNIEnv * env,jclass)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
Java_Main_assertIsInterpreted(JNIEnv * env,jclass klass)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
Java_Main_isManaged(JNIEnv * env,jclass cls)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
Java_Main_assertIsManaged(JNIEnv * env,jclass cls)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