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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "base/android/context_utils.h" |
| 6 |
| 7 #include <jni.h> |
| 8 |
| 9 #include "base/android/scoped_java_ref.h" |
| 10 #include "base/lazy_instance.h" |
| 11 #include "jni/ContextUtils_jni.h" |
| 12 |
| 13 using base::android::JavaRef; |
| 14 |
| 15 namespace base { |
| 16 namespace android { |
| 17 |
| 18 namespace { |
| 19 |
| 20 // Leak the global app context, as it is used from a non-joinable worker thread |
| 21 // that may still be running at shutdown. There is no harm in doing this. |
| 22 base::LazyInstance<base::android::ScopedJavaGlobalRef<jobject>>::Leaky |
| 23 g_application_context = LAZY_INSTANCE_INITIALIZER; |
| 24 |
| 25 void SetNativeApplicationContext(JNIEnv* env, const JavaRef<jobject>& context) { |
| 26 if (env->IsSameObject(g_application_context.Get().obj(), context.obj())) { |
| 27 // It's safe to set the context more than once if it's the same context. |
| 28 return; |
| 29 } |
| 30 DCHECK(g_application_context.Get().is_null()); |
| 31 g_application_context.Get().Reset(context); |
| 32 } |
| 33 |
| 34 } // namespace |
| 35 |
| 36 const jobject GetApplicationContext() { |
| 37 DCHECK(!g_application_context.Get().is_null()); |
| 38 return g_application_context.Get().obj(); |
| 39 } |
| 40 |
| 41 void InitApplicationContext(JNIEnv* env, const JavaRef<jobject>& context) { |
| 42 SetNativeApplicationContext(env, context); |
| 43 Java_ContextUtils_initJavaSideApplicationContext(env, context.obj()); |
| 44 } |
| 45 |
| 46 static void InitNativeSideApplicationContext( |
| 47 JNIEnv* env, |
| 48 const JavaParamRef<jclass>& clazz, |
| 49 const JavaParamRef<jobject>& context) { |
| 50 SetNativeApplicationContext(env, context); |
| 51 } |
| 52 |
| 53 bool RegisterContextUtils(JNIEnv* env) { |
| 54 return RegisterNativesImpl(env); |
| 55 } |
| 56 |
| 57 } // namespace android |
| 58 } // namespace base |
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