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Code Releases Activity

Merge pull request #301 from Zillode/nice-st

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Run Syncthing with ionice (fixes #299).
This commit is contained in:
Felix Ableitner 2015-03-27 18:01:45 +01:00
commit e470be9872
1 changed files with 46 additions and 0 deletions
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46
src/main/java/com/nutomic/syncthingandroid/syncthing/SyncthingRunnable.java
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@ -9,6 +9,7 @@ import android.util.Log;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
@ -20,6 +21,8 @@ public class SyncthingRunnable implements Runnable {
private static final String TAG = "SyncthingRunnable";
private static final String TAG_IONICE = "SyncthingRunnable-IoNice";
private static final String TAG_NATIVE = "SyncthingNativeCode";
private final Context mContext;
@ -60,6 +63,8 @@ public class SyncthingRunnable implements Runnable {
log(process.getInputStream(), Log.INFO);
log(process.getErrorStream(), Log.WARN);
niceSyncthing();
ret = process.waitFor();
if (ret == 3) {
@ -84,6 +89,47 @@ public class SyncthingRunnable implements Runnable {
}
}
/**
* Look for a running libsyncthing.so process and nice its IO.
*/
private void niceSyncthing() {
new Thread() {
public void run() {
Process nice = null;
DataOutputStream niceOut = null;
int ret = 1;
try {
Thread.sleep(1000); // Wait a second before getting the Pid
nice = Runtime.getRuntime().exec("sh");
niceOut = new DataOutputStream(nice.getOutputStream());
niceOut.writeBytes("set `ps |grep libsyncthing.so`\n");
niceOut.writeBytes("ionice $2 be 7\n"); // best-effort, low priority
niceOut.writeBytes("exit\n");
log(nice.getErrorStream(), Log.WARN);
niceOut.flush();
ret = nice.waitFor();
Log.i(TAG_IONICE, "ionice performed on libsyncthing.so");
} catch (IOException | InterruptedException e) {
Log.e(TAG_IONICE, "Failed to execute ionice binary", e);
} finally {
try {
if (niceOut != null) {
niceOut.close();
}
} catch (IOException e) {
Log.w(TAG_IONICE, "Failed to close shell stream", e);
}
if (nice != null) {
nice.destroy();
}
if (ret != 0) {
Log.e(TAG_IONICE, "Failed to set ionice " + Integer.toString(ret));
}
}
}
}.start();
}
/**
* Logs the outputs of a stream to logcat and mNativeLog.
*