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      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
      3 // found in the LICENSE file.
      4 
      5 // This file is autogenerated by
      6 //     base/android/jni_generator/jni_generator.py
      7 // For
      8 //     org/chromium/foo/Foo
      9 
     10 #ifndef org_chromium_foo_Foo_JNI
     11 #define org_chromium_foo_Foo_JNI
     12 
     13 #include <jni.h>
     14 
     15 #include "base/android/jni_generator/jni_generator_helper.h"
     16 
     17 #include "base/android/jni_int_wrapper.h"
     18 
     19 // Step 1: forward declarations.
     20 namespace {
     21 const char kFooClassPath[] = "org/chromium/foo/Foo";
     22 // Leaking this jclass as we cannot use LazyInstance from some threads.
     23 jclass g_Foo_clazz = NULL;
     24 #define Foo_clazz(env) g_Foo_clazz
     25 
     26 }  // namespace
     27 
     28 // Step 2: method stubs.
     29 
     30 static void DoSomething(JNIEnv* env, const JavaParamRef<jclass>& jcaller,
     31     const JavaParamRef<jobject>& callback);
     32 
     33 static void Java_org_chromium_foo_Foo_nativeDoSomething(JNIEnv* env, jclass
     34     jcaller,
     35     jobject callback) {
     36   return DoSomething(env, JavaParamRef<jclass>(env, jcaller),
     37       JavaParamRef<jobject>(env, callback));
     38 }
     39 
     40 static base::subtle::AtomicWord g_Foo_calledByNative = 0;
     41 static void Java_Foo_calledByNative(JNIEnv* env, jobject callback) {
     42   /* Must call RegisterNativesImpl()  */
     43   CHECK_CLAZZ(env, Foo_clazz(env),
     44       Foo_clazz(env));
     45   jmethodID method_id =
     46       base::android::MethodID::LazyGet<
     47       base::android::MethodID::TYPE_STATIC>(
     48       env, Foo_clazz(env),
     49       "calledByNative",
     50 
     51 "("
     52 "Lorg/chromium/foo/Bar$Callback;"
     53 ")"
     54 "V",
     55       &g_Foo_calledByNative);
     56 
     57      env->CallStaticVoidMethod(Foo_clazz(env),
     58           method_id, callback);
     59   jni_generator::CheckException(env);
     60 
     61 }
     62 
     63 // Step 3: RegisterNatives.
     64 
     65 static const JNINativeMethod kMethodsFoo[] = {
     66     { "nativeDoSomething",
     67 "("
     68 "Lorg/chromium/foo/Bar$Callback;"
     69 ")"
     70 "V", reinterpret_cast<void*>(Java_org_chromium_foo_Foo_nativeDoSomething) },
     71 };
     72 
     73 static bool RegisterNativesImpl(JNIEnv* env) {
     74 
     75   g_Foo_clazz = reinterpret_cast<jclass>(env->NewGlobalRef(
     76       base::android::GetClass(env, kFooClassPath).obj()));
     77 
     78   const int kMethodsFooSize = arraysize(kMethodsFoo);
     79 
     80   if (env->RegisterNatives(Foo_clazz(env),
     81                            kMethodsFoo,
     82                            kMethodsFooSize) < 0) {
     83     jni_generator::HandleRegistrationError(
     84         env, Foo_clazz(env), __FILE__);
     85     return false;
     86   }
     87 
     88   return true;
     89 }
     90 
     91 #endif  // org_chromium_foo_Foo_JNI
     92