base/android/base_jni_onload.cc

   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/base_jni_onload.h"
   6
   7 #include "base/android/jni_android.h"
   8 #include "base/android/jni_onload_delegate.h"
   9 #include "base/android/library_loader/library_loader_hooks.h"
  10
  11 namespace base {
  12 namespace android {
  13
  14 namespace {
  15
  16 // The JNIOnLoadDelegate implementation in base.
  17 class BaseJNIOnLoadDelegate : public JNIOnLoadDelegate {
  18  public:
  19   bool RegisterJNI(JNIEnv* env) override;
  20   bool Init() override;
  21 };
  22
  23 bool BaseJNIOnLoadDelegate::RegisterJNI(JNIEnv* env) {
  24   return RegisterLibraryLoaderEntryHook(env);
  25 }
  26
  27 bool BaseJNIOnLoadDelegate::Init() {
  28   return true;
  29 }
  30
  31 }  // namespace
  32
  33
  34 bool OnJNIOnLoad(JavaVM* vm,
  35                  std::vector<JNIOnLoadDelegate*>* delegates) {
  36   base::android::InitVM(vm);
  37   JNIEnv* env = base::android::AttachCurrentThread();
  38
  39   BaseJNIOnLoadDelegate delegate;
  40   delegates->push_back(&delegate);
  41   bool ret = true;
  42   for (std::vector<JNIOnLoadDelegate*>::reverse_iterator i =
  43            delegates->rbegin(); i != delegates->rend(); ++i) {
  44     if (!(*i)->RegisterJNI(env)) {
  45       ret = false;
  46       break;
  47     }
  48   }
  49
  50   if (ret) {
  51     for (std::vector<JNIOnLoadDelegate*>::reverse_iterator i =
  52              delegates->rbegin(); i != delegates->rend(); ++i) {
  53       if (!(*i)->Init()) {
  54         ret = false;
  55         break;
  56       }
  57     }
  58   }
  59   delegates->pop_back();
  60   return ret;
  61 }
  62
  63 }  // namespace android
  64 }  // namespace base