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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 package org.chromium.base; | 5 package org.chromium.base; |
6 | 6 |
7 import org.chromium.base.annotations.CalledByNative; | 7 import org.chromium.base.annotations.CalledByNative; |
8 import org.chromium.base.annotations.MainDex; | 8 import org.chromium.base.annotations.MainDex; |
9 | 9 |
10 /** | 10 /** |
11 * This class provides JNI-related methods to the native library. | 11 * This class provides JNI-related methods to the native library. |
12 */ | 12 */ |
13 @MainDex | 13 @MainDex |
14 public class JNIUtils { | 14 public class JNIUtils { |
| 15 private static Boolean sSelectiveJniRegistrationEnabled; |
| 16 |
15 /** | 17 /** |
16 * This returns a ClassLoader that is capable of loading Chromium Java code.
Such a ClassLoader | 18 * This returns a ClassLoader that is capable of loading Chromium Java code.
Such a ClassLoader |
17 * is needed for the few cases where the JNI mechanism is unable to automati
cally determine the | 19 * is needed for the few cases where the JNI mechanism is unable to automati
cally determine the |
18 * appropriate ClassLoader instance. | 20 * appropriate ClassLoader instance. |
19 */ | 21 */ |
20 @CalledByNative | 22 @CalledByNative |
21 public static Object getClassLoader() { | 23 public static Object getClassLoader() { |
22 return JNIUtils.class.getClassLoader(); | 24 return JNIUtils.class.getClassLoader(); |
23 } | 25 } |
| 26 |
| 27 /** |
| 28 * @return whether or not the current process supports selective JNI registr
ation. |
| 29 */ |
| 30 @CalledByNative |
| 31 public static boolean isSelectiveJniRegistrationEnabled() { |
| 32 if (sSelectiveJniRegistrationEnabled == null) { |
| 33 sSelectiveJniRegistrationEnabled = false; |
| 34 } |
| 35 return sSelectiveJniRegistrationEnabled; |
| 36 } |
| 37 |
| 38 /** |
| 39 * Allow this process to selectively perform JNI registration. This must be
called before |
| 40 * loading native libraries or it will have no effect. |
| 41 */ |
| 42 public static void enableSelectiveJniRegistration() { |
| 43 assert sSelectiveJniRegistrationEnabled == null; |
| 44 sSelectiveJniRegistrationEnabled = true; |
| 45 } |
24 } | 46 } |
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