1 files changed, 140 insertions, 0 deletions
diff --git a/widget/android/AndroidJNIWrapper.cpp b/widget/android/AndroidJNIWrapper.cpp
new file mode 100644
index 000000000..e549c6fc7
--- /dev/null
+++ b/widget/android/AndroidJNIWrapper.cpp
@@ -0,0 +1,140 @@
+/* -*- Mode: c++; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <android/log.h>
+#include <dlfcn.h>
+#include <prthread.h>
+
+#include "mozilla/DebugOnly.h"
+#include "mozilla/Assertions.h"
+#include "mozilla/SyncRunnable.h"
+#include "nsThreadUtils.h"
+#include "AndroidBridge.h"
+
+extern "C" {
+  jclass __jsjni_GetGlobalClassRef(const char *className);
+}
+
+class GetGlobalClassRefRunnable : public mozilla::Runnable {
+  public:
+    GetGlobalClassRefRunnable(const char *className, jclass *foundClass) :
+        mClassName(className), mResult(foundClass) {}
+    NS_IMETHOD Run() override {
+        *mResult = __jsjni_GetGlobalClassRef(mClassName);
+        return NS_OK;
+    }
+  private:
+    const char *mClassName;
+    jclass *mResult;
+};
+
+extern "C" {
+  __attribute__ ((visibility("default")))
+  jclass
+  jsjni_FindClass(const char *className) {
+    // FindClass outside the main thread will run into problems due
+    // to missing the classpath
+    MOZ_ASSERT(NS_IsMainThread());
+    JNIEnv *env = mozilla::jni::GetGeckoThreadEnv();
+    return env->FindClass(className);
+  }
+
+  jclass
+  __jsjni_GetGlobalClassRef(const char *className) {
+    // root class globally
+    JNIEnv *env = mozilla::jni::GetGeckoThreadEnv();
+    jclass globalRef = static_cast<jclass>(env->NewGlobalRef(env->FindClass(className)));
+    if (!globalRef)
+      return nullptr;
+
+    // return the newly create global reference
+    return globalRef;
+  }
+
+  __attribute__ ((visibility("default")))
+  jclass
+  jsjni_GetGlobalClassRef(const char *className) {
+    if (NS_IsMainThread()) {
+      return __jsjni_GetGlobalClassRef(className);
+    }
+
+    nsCOMPtr<nsIThread> mainThread;
+    mozilla::DebugOnly<nsresult> rv = NS_GetMainThread(getter_AddRefs(mainThread));
+    MOZ_ASSERT(NS_SUCCEEDED(rv));
+
+    jclass foundClass;
+    nsCOMPtr<nsIRunnable> runnable_ref(new GetGlobalClassRefRunnable(className,
+                                                                     &foundClass));
+    RefPtr<mozilla::SyncRunnable> sr = new mozilla::SyncRunnable(runnable_ref);
+    sr->DispatchToThread(mainThread);
+    if (!foundClass)
+      return nullptr;
+
+    return foundClass;
+  }
+
+  __attribute__ ((visibility("default")))
+  jmethodID
+  jsjni_GetStaticMethodID(jclass methodClass,
+                          const char *methodName,
+                          const char *signature) {
+    JNIEnv *env = mozilla::jni::GetGeckoThreadEnv();
+    return env->GetStaticMethodID(methodClass, methodName, signature);
+  }
+
+  __attribute__ ((visibility("default")))
+  bool
+  jsjni_ExceptionCheck() {
+    JNIEnv *env = mozilla::jni::GetGeckoThreadEnv();
+    return env->ExceptionCheck();
+  }
+
+  __attribute__ ((visibility("default")))
+  void
+  jsjni_CallStaticVoidMethodA(jclass cls,
+                              jmethodID method,
+                              jvalue *values) {
+    JNIEnv *env = mozilla::jni::GetGeckoThreadEnv();
+
+    mozilla::AutoLocalJNIFrame jniFrame(env);
+    env->CallStaticVoidMethodA(cls, method, values);
+  }
+
+  __attribute__ ((visibility("default")))
+  int
+  jsjni_CallStaticIntMethodA(jclass cls,
+                             jmethodID method,
+                             jvalue *values) {
+    JNIEnv *env = mozilla::jni::GetGeckoThreadEnv();
+
+    mozilla::AutoLocalJNIFrame jniFrame(env);
+    return env->CallStaticIntMethodA(cls, method, values);
+  }
+
+  __attribute__ ((visibility("default")))
+  jobject jsjni_GetGlobalContextRef() {
+    return mozilla::AndroidBridge::Bridge()->GetGlobalContextRef();
+  }
+
+  __attribute__ ((visibility("default")))
+  JavaVM* jsjni_GetVM() {
+    JavaVM* jvm;
+    JNIEnv* const env = mozilla::jni::GetGeckoThreadEnv();
+    MOZ_ALWAYS_TRUE(!env->GetJavaVM(&jvm));
+    return jvm;
+  }
+
+  __attribute__ ((visibility("default")))
+  JNIEnv* jsjni_GetJNIForThread() {
+    return mozilla::jni::GetEnvForThread();
+  }
+
+  // For compatibility with JNI.jsm; some addons bundle their own JNI.jsm,
+  // so we cannot just change the function name used in JNI.jsm.
+  __attribute__ ((visibility("default")))
+  JNIEnv* GetJNIForThread() {
+    return mozilla::jni::GetEnvForThread();
+  }
+}