1 /*
2  * Copyright (C) 2017 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 "art_method.h"
20 #include "class_linker.h"
21 #include "mirror/class-inl.h"
22 #include "mirror/dex_cache.h"
23 #include "mirror/executable.h"
24 #include "mirror/object-inl.h"
25 #include "obj_ptr.h"
26 #include "oat_file.h"
27 #include "runtime.h"
28 #include "scoped_thread_state_change-inl.h"
29 #include "thread.h"
30 
31 namespace art {
32 namespace {
33 
Java_Main_getOatMethodQuickCode(JNIEnv * env,jclass,jobject method)34 extern "C" JNIEXPORT jlong JNICALL Java_Main_getOatMethodQuickCode(JNIEnv* env,
35                                                                    jclass,
36                                                                    jobject method) {
37   CHECK(method != nullptr);
38   ScopedObjectAccess soa(env);
39   ObjPtr<mirror::Executable> exec = soa.Decode<mirror::Executable>(method);
40   ArtMethod* art_method = exec->GetArtMethod();
41 
42   const void* quick_code =
43     art_method->GetOatMethodQuickCode(Runtime::Current()->GetClassLinker()->GetImagePointerSize());
44 
45   return static_cast<jlong>(reinterpret_cast<uintptr_t>(quick_code));
46 }
47 
Java_Main_hasOatCompiledCode(JNIEnv * env,jclass,jclass kls)48 extern "C" JNIEXPORT jboolean JNICALL Java_Main_hasOatCompiledCode(JNIEnv* env,
49                                                                    jclass,
50                                                                    jclass kls) {
51   CHECK(kls != nullptr);
52   ScopedObjectAccess soa(env);
53   Thread* self = Thread::Current();
54 
55   ObjPtr<mirror::Class> klass_ptr = self->DecodeJObject(kls)->AsClass();
56 
57   bool found = false;
58   OatFile::OatClass oat_class = OatFile::FindOatClass(*klass_ptr->GetDexCache()->GetDexFile(),
59                                                       klass_ptr->GetDexClassDefIndex(),
60                                                       /* out */ &found);
61 
62   if (!found) {
63     return false;
64   }
65 
66   OatClassType type = oat_class.GetType();
67   switch (type) {
68     case kOatClassAllCompiled:
69     case kOatClassSomeCompiled:
70       return true;
71 
72     case kOatClassNoneCompiled:
73     case kOatClassMax:
74       return false;
75   }
76 
77   LOG(FATAL) << "unhandled switch statement";
78   UNREACHABLE();
79 }
80 
81 }  // namespace
82 }  // namespace art
83