blob: 1789d78c8578dc6a41b03b75411b0e2384cd8c94 [file] [log] [blame]
* Copyright 2017 The WebRTC project authors. All Rights Reserved.
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
#include "sdk/android/native_api/jni/class_loader.h"
#include <algorithm>
#include <string>
#include "rtc_base/checks.h"
#include "sdk/android/generated_native_api_jni/WebRtcClassLoader_jni.h"
#include "sdk/android/native_api/jni/java_types.h"
#include "sdk/android/native_api/jni/scoped_java_ref.h"
// Abort the process if `jni` has a Java exception pending. This macros uses the
// comma operator to execute ExceptionDescribe and ExceptionClear ignoring their
// return values and sending "" to the error stream.
#define CHECK_EXCEPTION(jni) \
RTC_CHECK(!jni->ExceptionCheck()) \
<< (jni->ExceptionDescribe(), jni->ExceptionClear(), "")
namespace webrtc {
namespace {
class ClassLoader {
explicit ClassLoader(JNIEnv* env)
: class_loader_(jni::Java_WebRtcClassLoader_getClassLoader(env)) {
class_loader_class_ = reinterpret_cast<jclass>(
load_class_method_ =
env->GetMethodID(class_loader_class_, "loadClass",
ScopedJavaLocalRef<jclass> FindClass(JNIEnv* env, const char* c_name) {
// ClassLoader.loadClass expects a classname with components separated by
// dots instead of the slashes that JNIEnv::FindClass expects.
std::string name(c_name);
std::replace(name.begin(), name.end(), '/', '.');
ScopedJavaLocalRef<jstring> j_name = NativeToJavaString(env, name);
const jclass clazz = static_cast<jclass>(env->CallObjectMethod(
class_loader_.obj(), load_class_method_, j_name.obj()));
return ScopedJavaLocalRef<jclass>(env, clazz);
ScopedJavaGlobalRef<jobject> class_loader_;
jclass class_loader_class_;
jmethodID load_class_method_;
static ClassLoader* g_class_loader = nullptr;
} // namespace
void InitClassLoader(JNIEnv* env) {
RTC_CHECK(g_class_loader == nullptr);
g_class_loader = new ClassLoader(env);
ScopedJavaLocalRef<jclass> GetClass(JNIEnv* env, const char* name) {
// The class loader will be null in the JNI code called from the ClassLoader
// ctor when we are bootstrapping ourself.
return (g_class_loader == nullptr)
? ScopedJavaLocalRef<jclass>(env, env->FindClass(name))
: g_class_loader->FindClass(env, name);
} // namespace webrtc