1 /*
2 * Copyright (C) 2024 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 #include <log/log.h>
19 #include <nativehelper/JNIHelp.h>
20 #include <nativehelper/ScopedLocalRef.h>
21 #include <nativehelper/ScopedPrimitiveArray.h>
22 #include <nativehelper/ScopedUtfChars.h>
23
24 #include <string>
25
26 constexpr const char* kCommonUtils = "com/android/ravenwood/common/RavenwoodCommonUtils";
27 constexpr const char* kRuntimeEnvController =
28 "android/platform/test/ravenwood/RavenwoodRuntimeEnvironmentController";
29 constexpr const char* kRunnerState = "android/platform/test/ravenwood/RavenwoodRunnerState";
30 constexpr const char* kRuntimeNative = "com/android/ravenwood/RavenwoodRuntimeNative";
31
32 // We have to explicitly decode the string to real UTF-8, because when using GetStringUTFChars
33 // we only get modified UTF-8, which is not the platform string type used in host JVM.
34 struct ScopedRealUtf8Chars {
ScopedRealUtf8CharsScopedRealUtf8Chars35 ScopedRealUtf8Chars(JNIEnv* env, jstring s) : valid_(false) {
36 if (s == nullptr) {
37 jniThrowNullPointerException(env);
38 return;
39 }
40 jclass clazz = env->GetObjectClass(s);
41 jmethodID getBytes = env->GetMethodID(clazz, "getBytes", "(Ljava/lang/String;)[B");
42
43 ScopedLocalRef<jstring> utf8(env, env->NewStringUTF("UTF-8"));
44 ScopedLocalRef<jbyteArray> jbytes(env,
45 (jbyteArray)env->CallObjectMethod(s, getBytes,
46 utf8.get()));
47
48 ScopedByteArrayRO bytes(env, jbytes.get());
49 string_.append((const char*)bytes.get(), bytes.size());
50 valid_ = true;
51 }
52
c_strScopedRealUtf8Chars53 const char* c_str() const {
54 return valid_ ? string_.c_str() : nullptr;
55 }
56
sizeScopedRealUtf8Chars57 size_t size() const {
58 return string_.size();
59 }
60
61 const char& operator[](size_t n) const {
62 return string_[n];
63 }
64
65 private:
66 std::string string_;
67 bool valid_;
68 };
69
GetJNIEnvOrDie(JavaVM * vm)70 static inline JNIEnv* GetJNIEnvOrDie(JavaVM* vm) {
71 JNIEnv* env = nullptr;
72 vm->GetEnv((void**)&env, JNI_VERSION_1_4);
73 LOG_ALWAYS_FATAL_IF(env == nullptr, "Could not retrieve JNIEnv.");
74 return env;
75 }
76
FindClassOrDie(JNIEnv * env,const char * class_name)77 static inline jclass FindClassOrDie(JNIEnv* env, const char* class_name) {
78 jclass clazz = env->FindClass(class_name);
79 LOG_ALWAYS_FATAL_IF(clazz == NULL, "Unable to find class %s", class_name);
80 return clazz;
81 }
82
83 template <typename T>
MakeGlobalRefOrDie(JNIEnv * env,T in)84 static inline T MakeGlobalRefOrDie(JNIEnv* env, T in) {
85 jobject res = env->NewGlobalRef(in);
86 LOG_ALWAYS_FATAL_IF(res == NULL, "Unable to create global reference.");
87 return static_cast<T>(res);
88 }
89
FindGlobalClassOrDie(JNIEnv * env,const char * class_name)90 static inline jclass FindGlobalClassOrDie(JNIEnv* env, const char* class_name) {
91 return MakeGlobalRefOrDie(env, FindClassOrDie(env, class_name));
92 }
93
GetStaticMethodIDOrDie(JNIEnv * env,jclass clazz,const char * method_name,const char * method_signature)94 static inline jmethodID GetStaticMethodIDOrDie(JNIEnv* env, jclass clazz, const char* method_name,
95 const char* method_signature) {
96 jmethodID res = env->GetStaticMethodID(clazz, method_name, method_signature);
97 LOG_ALWAYS_FATAL_IF(res == NULL, "Unable to find static method %s with signature %s",
98 method_name, method_signature);
99 return res;
100 }
101