/*
* Copyright (C) 2011 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 com.android.ddmuilib.heap;
import com.android.ddmlib.NativeAllocationInfo;
import com.android.ddmlib.NativeStackCallInfo;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.graphics.Image;
/**
* A Label Provider for the Native Heap TreeViewer in {@link NativeHeapPanel}.
*/
public class NativeHeapLabelProvider extends LabelProvider implements ITableLabelProvider {
private long mTotalSize;
@Override
public Image getColumnImage(Object arg0, int arg1) {
return null;
}
@Override
public String getColumnText(Object element, int index) {
if (element instanceof NativeAllocationInfo) {
return getColumnTextForNativeAllocation((NativeAllocationInfo) element, index);
}
if (element instanceof NativeLibraryAllocationInfo) {
return getColumnTextForNativeLibrary((NativeLibraryAllocationInfo) element, index);
}
return null;
}
private String getColumnTextForNativeAllocation(NativeAllocationInfo info, int index) {
NativeStackCallInfo stackInfo = info.getRelevantStackCallInfo();
switch (index) {
case 0:
return stackInfo == null ? stackResolutionStatus(info) : stackInfo.getLibraryName();
case 1:
return Integer.toString(info.getSize() * info.getAllocationCount());
case 2:
return getPercentageString(info.getSize() * info.getAllocationCount(), mTotalSize);
case 3:
String prefix = "";
if (!info.isZygoteChild()) {
prefix = "Z ";
}
return prefix + Integer.toString(info.getAllocationCount());
case 4:
return Integer.toString(info.getSize());
case 5:
return stackInfo == null ? stackResolutionStatus(info) : stackInfo.getMethodName();
default:
return null;
}
}
private String getColumnTextForNativeLibrary(NativeLibraryAllocationInfo info, int index) {
switch (index) {
case 0:
return info.getLibraryName();
case 1:
return Long.toString(info.getTotalSize());
case 2:
return getPercentageString(info.getTotalSize(), mTotalSize);
default:
return null;
}
}
private String getPercentageString(long size, long total) {
if (total == 0) {
return "";
}
return String.format("%.1f%%", (float)(size * 100)/(float)total);
}
private String stackResolutionStatus(NativeAllocationInfo info) {
if (info.isStackCallResolved()) {
return "?"; // resolved and unknown
} else {
return "Resolving..."; // still resolving...
}
}
/**
* Set the total size of the heap dump for use in percentage calculations.
* This value should be set whenever the input to the tree changes so that the percentages
* are computed correctly.
*/
public void setTotalSize(long totalSize) {
mTotalSize = totalSize;
}
}