android: Fix some crashes, callstacks, and warnings I'm seeing in the logs.

src/android/com/unprompted/tildefriends/TildeFriendsActivity.java

@@ -385,8 +385,11 @@ public class TildeFriendsActivity extends Activity {
 			public void onServiceConnected(ComponentName name, IBinder binder) {
 				Log.w("tildefriends", "onServiceConnected");
 				Parcel data = Parcel.obtain();
-				ParcelFileDescriptor pfd = ParcelFileDescriptor.adoptFd(pipe_fd);
+				try (ParcelFileDescriptor pfd = ParcelFileDescriptor.fromFd(pipe_fd)) {
 					data.writeParcelable(pfd, 0);
+				} catch (java.io.IOException e) {
+					Log.w("tildefriends", "IOException: " + e);
+				}
 				try {
 					binder.transact(TildeFriendsSandboxService.START_CALL,  data, null, IBinder.FLAG_ONEWAY);
 				} catch (RemoteException e) {

src/packetstream.c

@@ -12,6 +12,8 @@ typedef struct _tf_packetstream_t
 {
 	tf_packetstream_onreceive_t* onreceive;
 	void* onreceive_user_data;
+	tf_packetstream_on_close_t* on_close;
+	void* on_close_user_data;
 	uv_pipe_t stream;
 	char* buffer;
 	size_t buffer_size;
@@ -30,6 +32,8 @@ void tf_packetstream_destroy(tf_packetstream_t* stream)
 {
 	stream->onreceive = NULL;
 	stream->onreceive_user_data = NULL;
+	stream->on_close = NULL;
+	stream->on_close_user_data = NULL;
 	stream->destroyed = true;
 	if (stream->buffer)
 	{
@@ -110,6 +114,14 @@ static void _packetstream_on_read(uv_stream_t* handle, ssize_t count, const uv_b
 	}
 	else
 	{
+		tf_packetstream_on_close_t* on_close = stream->on_close;
+		void* user_data = stream->on_close_user_data;
+		stream->on_close = NULL;
+		stream->on_close_user_data = NULL;
+		if (on_close)
+		{
+			on_close(user_data);
+		}
 		tf_packetstream_close(stream);
 	}
 	tf_free(buffer->base);
@@ -150,7 +162,7 @@ void tf_packetstream_send(tf_packetstream_t* stream, int packet_type, const char
 		int result = uv_write(request, (uv_stream_t*)&stream->stream, &write_buffer, 1, _packetstream_on_write);
 		if (result)
 		{
-			tf_printf("uv_write: %s\n", uv_strerror(result));
+			tf_printf("tf_packetstream_send: uv_write: %s\n", uv_strerror(result));
 			tf_free(request);
 		}
 	}
@@ -162,6 +174,12 @@ void tf_packetstream_set_on_receive(tf_packetstream_t* stream, tf_packetstream_o
 	stream->onreceive_user_data = user_data;
 }
 
+void tf_packetstream_set_on_close(tf_packetstream_t* stream, tf_packetstream_on_close_t* callback, void* user_data)
+{
+	stream->on_close = callback;
+	stream->on_close_user_data = user_data;
+}
+
 static void _tf_packetstream_handle_closed(uv_handle_t* handle)
 {
 	tf_packetstream_t* packetstream = handle->data;

src/packetstream.h

@@ -23,6 +23,12 @@ typedef struct _tf_packetstream_t tf_packetstream_t;
 */
 typedef void(tf_packetstream_onreceive_t)(int packet_type, const char* begin, size_t length, void* user_data);
 
+/**
+** A function called when a packetstream reads EOF.
+** @param user_data User data.
+*/
+typedef void(tf_packetstream_on_close_t)(void* user_data);
+
 /**
 ** Create a packet stream.
 ** @return The packet stream.
@@ -58,6 +64,14 @@ void tf_packetstream_send(tf_packetstream_t* stream, int packet_type, const char
 */
 void tf_packetstream_set_on_receive(tf_packetstream_t* stream, tf_packetstream_onreceive_t* callback, void* user_data);
 
+/**
+** Register a callback for when a stream reads EOF.
+** @param stream The packet stream.
+** @param callback The callback.
+** @param user_data User data to pass to the callback.
+*/
+void tf_packetstream_set_on_close(tf_packetstream_t* stream, tf_packetstream_on_close_t* callback, void* user_data);
+
 /**
 ** Close a packet stream.
 ** @param stream The packet stream.

src/taskstub.js.c

@@ -62,6 +62,7 @@ static JSValue _taskstub_set_on_print(JSContext* context, JSValueConst this_val,
 static JSValue _taskstub_loadFile(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv);
 static void _taskstub_on_process_exit(uv_process_t* process, int64_t status, int terminationSignal);
 static void _taskstub_finalizer(JSRuntime* runtime, JSValue value);
+static void _taskstub_cleanup(tf_taskstub_t* stub);
 
 static void _tf_taskstub_run_sandbox_thread(void* data)
 {
@@ -74,12 +75,60 @@ static void _tf_taskstub_run_sandbox_thread(void* data)
 	tf_task_destroy(task);
 }
 
+static void _taskstub_on_handle_close(uv_handle_t* handle)
+{
+	tf_taskstub_t* stub = handle->data;
+	tf_task_remove_child(stub->_owner, stub);
+	handle->data = NULL;
+	_taskstub_cleanup(stub);
+}
+
+static void _tf_taskstub_on_exit(tf_taskstub_t* stub, int64_t status, int termination_signal)
+{
+	JSContext* context = tf_task_get_context(stub->_owner);
+	if (!JS_IsUndefined(stub->_on_exit))
+	{
+		JSValue ref = JS_DupValue(context, stub->_on_exit);
+		JSValue argv[] = { JS_NewInt64(context, status), JS_NewInt32(context, termination_signal) };
+		JSValue result = JS_Call(context, stub->_on_exit, JS_NULL, 2, argv);
+		tf_util_report_error(context, result);
+		JS_FreeValue(context, result);
+		JS_FreeValue(context, argv[0]);
+		JS_FreeValue(context, argv[1]);
+		JS_FreeValue(context, ref);
+	}
+	if (stub->_stream)
+	{
+		tf_packetstream_destroy(stub->_stream);
+		stub->_stream = NULL;
+	}
+	tf_task_remove_child(stub->_owner, stub);
+	if (stub->_process.data)
+	{
+		uv_close((uv_handle_t*)&stub->_process, _taskstub_on_handle_close);
+	}
+	else
+	{
+		_taskstub_cleanup(stub);
+	}
+}
+
+static void _tf_taskstub_packetstream_close(void* user_data)
+{
+	tf_taskstub_t* stub = user_data;
+	if (!stub->_process.data)
+	{
+		_tf_taskstub_on_exit(stub, -1, -1);
+	}
+}
+
 static JSValue _taskstub_create(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)
 {
 	tf_task_t* parent = tf_task_get(context);
 	tf_taskstub_t* stub = tf_malloc(sizeof(tf_taskstub_t));
 	memset(stub, 0, sizeof(*stub));
 	stub->_stream = tf_packetstream_create();
+	tf_packetstream_set_on_close(stub->_stream, _tf_taskstub_packetstream_close, stub);
 
 	JSValue taskObject = JS_NewObjectClass(context, _classId);
 	JS_SetOpaque(taskObject, stub);
@@ -314,35 +363,10 @@ static void _taskstub_finalizer(JSRuntime* runtime, JSValue value)
 	_taskstub_cleanup(stub);
 }
 
-static void _taskstub_on_handle_close(uv_handle_t* handle)
+static void _taskstub_on_process_exit(uv_process_t* process, int64_t status, int termination_signal)
-{
-	tf_taskstub_t* stub = handle->data;
-	tf_task_remove_child(stub->_owner, stub);
-	handle->data = NULL;
-	_taskstub_cleanup(stub);
-}
-
-static void _taskstub_on_process_exit(uv_process_t* process, int64_t status, int terminationSignal)
 {
 	tf_taskstub_t* stub = process->data;
-	JSContext* context = tf_task_get_context(stub->_owner);
+	_tf_taskstub_on_exit(stub, status, termination_signal);
-	if (!JS_IsUndefined(stub->_on_exit))
-	{
-		JSValue ref = JS_DupValue(context, stub->_on_exit);
-		JSValue argv[] = { JS_NewInt64(context, status), JS_NewInt32(context, terminationSignal) };
-		JSValue result = JS_Call(context, stub->_on_exit, JS_NULL, 2, argv);
-		tf_util_report_error(context, result);
-		JS_FreeValue(context, result);
-		JS_FreeValue(context, argv[0]);
-		JS_FreeValue(context, argv[1]);
-		JS_FreeValue(context, ref);
-	}
-	if (stub->_stream)
-	{
-		tf_packetstream_destroy(stub->_stream);
-		stub->_stream = NULL;
-	}
-	uv_close((uv_handle_t*)process, _taskstub_on_handle_close);
 }
 
 static JSValue _taskstub_getExports(JSContext* context, JSValueConst this_val, int argc, JSValueConst* argv)