/**
* Remove the given bundle from the list. Returns true if the bundle was successfully removed,
* false otherwise.
*
* @param free whether to free the bundle. This freeing will remove Bundle from storage including
* its payload
*/
public boolean erase(Bundle bundle, boolean free) {
if (bundle == null) {
return false;
}
lock_.lock();
// "Now we need to take the bundle lock in order to search through
// its mappings" [DTN2]
bundle.get_lock().lock();
try {
int pos = list_.indexOf(bundle);
if (pos == -1) return false;
Bundle b = del_bundle(pos, free);
assert (b == bundle);
return true;
} catch (BundleListLockNotHoldByCurrentThread e) {
Log.e(TAG, e.getMessage());
return false;
} finally {
bundle.get_lock().unlock();
lock_.unlock();
}
}
/**
* Remove (and return) the last bundle on the list.
*
* @param free whether to free the bundle. This freeing will remove Bundle from storage including
* its payload
*/
public Bundle pop_back(boolean free) {
lock_.lock();
try {
if (list_.isEmpty()) return null;
Bundle ret = del_bundle(list_.size() - 1, free);
return ret;
} catch (BundleListLockNotHoldByCurrentThread e) {
Log.e(TAG, e.getMessage());
return null;
} finally {
lock_.unlock();
}
}
/** "As a testing hook, insert the given bundle into a random location in the list." [DTN2] */
public void insert_random(Bundle bundle) {
lock_.lock();
int s = 222;
if (!lock_.isHeldByCurrentThread()) s = 1;
try {
int random_position = (int) (Math.random() * this.size());
add_bundle(bundle, random_position);
} catch (BundleLockNotHeldByCurrentThread e) {
Log.e(TAG, e.getMessage());
} catch (InterruptedException e) {
Log.e(TAG, e.getMessage());
} catch (BundleListLockNotHoldByCurrentThread e) {
Log.e(TAG, e.getMessage());
} finally {
lock_.unlock();
}
}
/** Add a new bundle to the front of the list. */
public boolean push_front(Bundle bundle) {
lock_.lock();
bundle.get_lock().lock();
try {
add_bundle(bundle, 0);
return true;
} catch (BundleLockNotHeldByCurrentThread e) {
Log.e(TAG, e.getMessage());
} catch (InterruptedException e) {
Log.e(TAG, e.getMessage());
} catch (BundleListLockNotHoldByCurrentThread e) {
Log.e(TAG, e.getMessage());
} finally {
bundle.get_lock().unlock();
lock_.unlock();
}
return true;
}
/** Insert the given bundle sorted by the given sort method. */
public boolean insert_sorted(Bundle bundle, Comparator<Bundle> sort_comparator) {
lock_.lock();
bundle.get_lock().lock();
try {
add_bundle(bundle, list_.size());
Collections.sort(this.list_, sort_comparator);
return true;
} catch (BundleLockNotHeldByCurrentThread e) {
Log.e(TAG, e.getMessage());
return false;
} catch (InterruptedException e) {
Log.e(TAG, e.getMessage());
return false;
} catch (BundleListLockNotHoldByCurrentThread e) {
Log.e(TAG, e.getMessage());
return false;
} finally {
bundle.get_lock().unlock();
lock_.unlock();
}
}
