1 /*
2 * Copyright (C) 2016 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 "dex/dex_file.h"
18
19 #include "art_method-inl.h"
20 #include "dex/method_reference.h"
21 #include "jit/profile_saver.h"
22 #include "jni.h"
23 #include "mirror/class-inl.h"
24 #include "mirror/executable.h"
25 #include "nativehelper/ScopedUtfChars.h"
26 #include "oat_file_assistant.h"
27 #include "oat_file_manager.h"
28 #include "profile/profile_compilation_info.h"
29 #include "scoped_thread_state_change-inl.h"
30 #include "thread.h"
31
32 namespace art {
33 namespace {
34
Java_Main_ensureProfilingInfo(JNIEnv * env,jclass,jobject method)35 extern "C" JNIEXPORT void JNICALL Java_Main_ensureProfilingInfo(JNIEnv* env,
36 jclass,
37 jobject method) {
38 CHECK(method != nullptr);
39 ScopedObjectAccess soa(env);
40 ObjPtr<mirror::Executable> exec = soa.Decode<mirror::Executable>(method);
41 ArtMethod* art_method = exec->GetArtMethod();
42 if (ProfilingInfo::Create(soa.Self(), art_method) == nullptr) {
43 LOG(ERROR) << "Failed to create profiling info for method " << art_method->PrettyMethod();
44 }
45 }
46
Java_Main_ensureProfileProcessing(JNIEnv *,jclass)47 extern "C" JNIEXPORT void JNICALL Java_Main_ensureProfileProcessing(JNIEnv*, jclass) {
48 ProfileSaver::ForceProcessProfiles();
49 }
50
Java_Main_isForBootImage(JNIEnv * env,jclass,jstring filename)51 extern "C" JNIEXPORT jboolean JNICALL Java_Main_isForBootImage(JNIEnv* env,
52 jclass,
53 jstring filename) {
54 ScopedUtfChars filename_chars(env, filename);
55 CHECK(filename_chars.c_str() != nullptr);
56
57 ProfileCompilationInfo info(/*for_boot_image=*/ true);
58 bool result = info.Load(std::string(filename_chars.c_str()), /*clear_if_invalid=*/ false);
59 return result ? JNI_TRUE : JNI_FALSE;
60 }
61
Java_Main_presentInProfile(JNIEnv * env,jclass c,jstring filename,jobject method)62 extern "C" JNIEXPORT jboolean JNICALL Java_Main_presentInProfile(JNIEnv* env,
63 jclass c,
64 jstring filename,
65 jobject method) {
66 bool for_boot_image = Java_Main_isForBootImage(env, c, filename) == JNI_TRUE;
67 ScopedUtfChars filename_chars(env, filename);
68 CHECK(filename_chars.c_str() != nullptr);
69 ScopedObjectAccess soa(env);
70 ObjPtr<mirror::Executable> exec = soa.Decode<mirror::Executable>(method);
71 ArtMethod* art_method = exec->GetArtMethod();
72 MethodReference ref(art_method->GetDexFile(), art_method->GetDexMethodIndex());
73
74 ProfileCompilationInfo info(Runtime::Current()->GetArenaPool(), for_boot_image);
75 if (!info.Load(filename_chars.c_str(), /*clear_if_invalid=*/false)) {
76 LOG(ERROR) << "Failed to load profile from " << filename;
77 return JNI_FALSE;
78 }
79 const ProfileCompilationInfo::MethodHotness hotness = info.GetMethodHotness(ref);
80 // TODO: Why do we check `hotness.IsHot()` instead of `hotness.IsInProfile()`
81 // in a method named `presentInProfile()`?
82 return hotness.IsHot() ? JNI_TRUE : JNI_FALSE;
83 }
84
85 } // namespace
86 } // namespace art
87