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Library providing APIs to talk to Android devices
/*
* Copyright (C) 2008 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.ddmlib;
import com.android.annotations.NonNull;
import com.android.annotations.Nullable;
import com.google.common.collect.Lists;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Locale;
/**
* Holds an Allocation information.
*/
public class AllocationInfo implements IStackTraceInfo {
private final String mAllocatedClass;
private final int mAllocNumber;
private final int mAllocationSize;
private final short mThreadId;
private final StackTraceElement[] mStackTrace;
public enum SortMode {
NUMBER, SIZE, CLASS, THREAD, ALLOCATION_SITE, IN_CLASS, IN_METHOD
}
public static final class AllocationSorter implements Comparator {
private SortMode mSortMode = SortMode.SIZE;
private boolean mDescending = true;
public AllocationSorter() {
}
public void setSortMode(@NonNull SortMode mode) {
if (mSortMode == mode) {
mDescending = !mDescending;
} else {
mSortMode = mode;
}
}
public void setSortMode(@NonNull SortMode mode, boolean descending) {
mSortMode = mode;
mDescending = descending;
}
@NonNull
public SortMode getSortMode() {
return mSortMode;
}
public boolean isDescending() {
return mDescending;
}
@Override
public int compare(AllocationInfo o1, AllocationInfo o2) {
int diff = 0;
switch (mSortMode) {
case NUMBER:
diff = o1.mAllocNumber - o2.mAllocNumber;
break;
case SIZE:
// pass, since diff is init with 0, we'll use SIZE compare below
// as a back up anyway.
break;
case CLASS:
diff = o1.mAllocatedClass.compareTo(o2.mAllocatedClass);
break;
case THREAD:
diff = o1.mThreadId - o2.mThreadId;
break;
case IN_CLASS:
String class1 = o1.getFirstTraceClassName();
String class2 = o2.getFirstTraceClassName();
diff = compareOptionalString(class1, class2);
break;
case IN_METHOD:
String method1 = o1.getFirstTraceMethodName();
String method2 = o2.getFirstTraceMethodName();
diff = compareOptionalString(method1, method2);
break;
case ALLOCATION_SITE:
String desc1 = o1.getAllocationSite();
String desc2 = o2.getAllocationSite();
diff = compareOptionalString(desc1, desc2);
break;
}
if (diff == 0) {
// same? compare on size
diff = o1.mAllocationSize - o2.mAllocationSize;
}
if (mDescending) {
diff = -diff;
}
return diff;
}
/** compares two strings that could be null */
private static int compareOptionalString(String str1, String str2) {
if (str1 != null) {
if (str2 == null) {
return -1;
} else {
return str1.compareTo(str2);
}
} else {
if (str2 == null) {
return 0;
} else {
return 1;
}
}
}
}
/*
* Simple constructor.
*/
AllocationInfo(int allocNumber, String allocatedClass, int allocationSize,
short threadId, StackTraceElement[] stackTrace) {
mAllocNumber = allocNumber;
mAllocatedClass = allocatedClass;
mAllocationSize = allocationSize;
mThreadId = threadId;
mStackTrace = stackTrace;
}
/**
* Returns the allocation number. Allocations are numbered as they happen with the most
* recent one having the highest number
*/
public int getAllocNumber() {
return mAllocNumber;
}
/**
* Returns the name of the allocated class.
*/
public String getAllocatedClass() {
return mAllocatedClass;
}
/**
* Returns the size of the allocation.
*/
public int getSize() {
return mAllocationSize;
}
/**
* Returns the id of the thread that performed the allocation.
*/
public short getThreadId() {
return mThreadId;
}
/*
* (non-Javadoc)
* @see com.android.ddmlib.IStackTraceInfo#getStackTrace()
*/
@Override
public StackTraceElement[] getStackTrace() {
return mStackTrace;
}
public int compareTo(AllocationInfo otherAlloc) {
return otherAlloc.mAllocationSize - mAllocationSize;
}
@Nullable
public String getAllocationSite() {
if (mStackTrace.length > 0) {
return mStackTrace[0].toString();
}
return null;
}
public String getFirstTraceClassName() {
if (mStackTrace.length > 0) {
return mStackTrace[0].getClassName();
}
return null;
}
public String getFirstTraceMethodName() {
if (mStackTrace.length > 0) {
return mStackTrace[0].getMethodName();
}
return null;
}
/**
* Returns true if the given filter matches case insensitively (according to
* the given locale) this allocation info.
*/
public boolean filter(String filter, boolean fullTrace, Locale locale) {
return allocatedClassMatches(filter, locale) || !getMatchingStackFrames(filter, fullTrace, locale).isEmpty();
}
public boolean allocatedClassMatches(@NonNull String pattern, @NonNull Locale locale) {
return mAllocatedClass.toLowerCase(locale).contains(pattern.toLowerCase(locale));
}
@NonNull
public List getMatchingStackFrames(@NonNull String filter, boolean fullTrace, @NonNull Locale locale) {
filter = filter.toLowerCase(locale);
// check the top of the stack trace always
if (mStackTrace.length > 0) {
final int length = fullTrace ? mStackTrace.length : 1;
List matchingFrames = Lists.newArrayListWithExpectedSize(length);
for (int i = 0; i < length; ++i) {
String frameString = mStackTrace[i].toString();
if (frameString.toLowerCase(locale).contains(filter)) {
matchingFrames.add(frameString);
}
}
return matchingFrames;
} else {
return Collections.emptyList();
}
}
}