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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 JavaRef<jobject>& GetApplicationContext() { | |
37 DCHECK(!g_application_context.Get().is_null()); | |
38 return g_application_context.Get(); | |
39 } | |
40 | |
41 static void InitNativeSideApplicationContext( | |
42 JNIEnv* env, | |
43 const JavaParamRef<jclass>& clazz, | |
44 const JavaParamRef<jobject>& context) { | |
45 SetNativeApplicationContext(env, context); | |
46 } | |
47 | |
48 bool RegisterContextUtils(JNIEnv* env) { | |
49 return RegisterNativesImpl(env); | |
50 } | |
51 | |
52 } // namespace android | |
53 } // namespace base | |
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