Mike Lockwood 071b2b6739 MTP: Fix race conditions in MtpServer JNI code
Make sure previous MtpThread has exited before starting another to avoid
EBUSY opening MTP kernel driver.

BUG: 3317803

Change-Id: I81dcbac42bcf5f680ed1b1469839bc0b0e49d53d
Signed-off-by: Mike Lockwood <lockwood@android.com>
2011-01-25 15:10:31 -08:00

65 lines
1.8 KiB
Java

/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.mtp;
import android.util.Log;
/**
* Java wrapper for MTP/PTP support as USB responder.
* {@hide}
*/
public class MtpServer {
private static final String TAG = "MtpServer";
static {
System.loadLibrary("media_jni");
}
public MtpServer(MtpDatabase database, String storagePath, long reserveSpace) {
native_setup(database, storagePath, reserveSpace);
}
public void start() {
native_start();
}
public void stop() {
native_stop();
}
public void sendObjectAdded(int handle) {
native_send_object_added(handle);
}
public void sendObjectRemoved(int handle) {
native_send_object_removed(handle);
}
public void setPtpMode(boolean usePtp) {
native_set_ptp_mode(usePtp);
}
private native final void native_setup(MtpDatabase database, String storagePath,
long reserveSpace);
private native final void native_start();
private native final void native_stop();
private native final void native_send_object_added(int handle);
private native final void native_send_object_removed(int handle);
private native final void native_set_ptp_mode(boolean usePtp);
}