Add new native Looper API.

This allows us to avoid exposing the file descriptor of
the event queue; instead, you attach an event queue to
a looper.  This will also should allow native apps to be
written without the need for a separate thread, by attaching
the event queue to the main thread's looper and scheduling
their own messages there.

Change-Id: I38489282635895ae2cbfacb88599c1b1cad9b239

3 files changed, 34 insertions, 5 deletions

diff --git a/core/java/android/app/NativeActivity.java b/core/java/android/app/NativeActivity.java
index 161161c..d72dda7 100644
--- a/core/java/android/app/NativeActivity.java
+++ b/core/java/android/app/NativeActivity.java
@@ -6,7 +6,9 @@ import android.content.pm.ActivityInfo;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.graphics.PixelFormat;
+import android.os.Build;
 import android.os.Bundle;
+import android.os.Environment;
 import android.os.Looper;
 import android.os.MessageQueue;
 import android.view.InputChannel;
@@ -33,7 +35,8 @@ public class NativeActivity extends Activity implements SurfaceHolder.Callback,
     
     private boolean mDestroyed;
     
-    private native int loadNativeCode(String path, MessageQueue queue);
+    private native int loadNativeCode(String path, MessageQueue queue,
+            String internalDataPath, String externalDataPath, int sdkVersion);
     private native void unloadNativeCode(int handle);
     
     private native void onStartNative(int handle);
@@ -90,7 +93,11 @@ public class NativeActivity extends Activity implements SurfaceHolder.Callback,
             throw new IllegalArgumentException("Unable to find native library: " + libname);
         }
         
-        mNativeHandle = loadNativeCode(path, Looper.myQueue());
+        mNativeHandle = loadNativeCode(path, Looper.myQueue(),
+                 getFilesDir().toString(),
+                 Environment.getExternalStorageAppFilesDirectory(ai.packageName).toString(),
+                 Build.VERSION.SDK_INT);
+        
         if (mNativeHandle == 0) {
             throw new IllegalArgumentException("Unable to load native library: " + path);
         }
diff --git a/core/jni/android_app_NativeActivity.cpp b/core/jni/android_app_NativeActivity.cpp
index dab1dba..af61b80 100644
--- a/core/jni/android_app_NativeActivity.cpp
+++ b/core/jni/android_app_NativeActivity.cpp
@@ -166,6 +166,9 @@ struct NativeCode {
     void* dlhandle;
     ANativeActivity_createFunc* createActivityFunc;
     
+    String8 internalDataPath;
+    String8 externalDataPath;
+    
     sp<ANativeWindow> nativeWindow;
     jobject inputChannel;
     struct MyInputQueue* nativeInputQueue;
@@ -204,7 +207,8 @@ static bool mainWorkCallback(int fd, int events, void* data) {
 // ------------------------------------------------------------------------
 
 static jint
-loadNativeCode_native(JNIEnv* env, jobject clazz, jstring path, jobject messageQueue)
+loadNativeCode_native(JNIEnv* env, jobject clazz, jstring path, jobject messageQueue,
+        jstring internalDataDir, jstring externalDataDir, int sdkVersion)
 {
     const char* pathStr = env->GetStringUTFChars(path, NULL);
     NativeCode* code = NULL;
@@ -247,6 +251,19 @@ loadNativeCode_native(JNIEnv* env, jobject clazz, jstring path, jobject messageQ
         }
         code->activity.env = env;
         code->activity.clazz = env->NewGlobalRef(clazz);
+        
+        const char* dirStr = env->GetStringUTFChars(internalDataDir, NULL);
+        code->internalDataPath = dirStr;
+        code->activity.internalDataPath = code->internalDataPath.string();
+        env->ReleaseStringUTFChars(path, dirStr);
+    
+        dirStr = env->GetStringUTFChars(externalDataDir, NULL);
+        code->externalDataPath = dirStr;
+        code->activity.externalDataPath = code->externalDataPath.string();
+        env->ReleaseStringUTFChars(path, dirStr);
+    
+        code->activity.sdkVersion = sdkVersion;
+        
         code->createActivityFunc(&code->activity, NULL, 0);
     }
     
@@ -420,7 +437,8 @@ onInputChannelDestroyed_native(JNIEnv* env, jobject clazz, jint handle, jobject
 }
 
 static const JNINativeMethod g_methods[] = {
-    { "loadNativeCode", "(Ljava/lang/String;Landroid/os/MessageQueue;)I", (void*)loadNativeCode_native },
+    { "loadNativeCode", "(Ljava/lang/String;Landroid/os/MessageQueue;Ljava/lang/String;Ljava/lang/String;I)I",
+            (void*)loadNativeCode_native },
     { "unloadNativeCode", "(I)V", (void*)unloadNativeCode_native },
     { "onStartNative", "(I)V", (void*)onStart_native },
     { "onResumeNative", "(I)V", (void*)onResume_native },
diff --git a/core/jni/android_os_MessageQueue.cpp b/core/jni/android_os_MessageQueue.cpp
index 030d6c7..961f806 100644
--- a/core/jni/android_os_MessageQueue.cpp
+++ b/core/jni/android_os_MessageQueue.cpp
@@ -51,7 +51,11 @@ private:
 // ----------------------------------------------------------------------------
 
 NativeMessageQueue::NativeMessageQueue() {
-    mPollLoop = new PollLoop();
+    mPollLoop = PollLoop::getForThread();
+    if (mPollLoop == NULL) {
+        mPollLoop = new PollLoop();
+        PollLoop::setForThread(mPollLoop);
+    }
 }
 
 NativeMessageQueue::~NativeMessageQueue() {