Java ClassInstance.FieldValue方法代码示例

import com.squareup.haha.perflib.ClassInstance; //导入方法依赖的package包/类
static String threadName(Instance holder) {
  List<ClassInstance.FieldValue> values = classInstanceValues(holder);
  Object nameField = fieldValue(values, "name");
  if (nameField == null) {
    // Sometimes we can't find the String at the expected memory address in the heap dump.
    // See https://github.com/square/leakcanary/issues/417 .
    return "Thread name not available";
  }
  return asString(nameField);
}
 

import com.squareup.haha.perflib.ClassInstance; //导入方法依赖的package包/类
static boolean hasField(List<ClassInstance.FieldValue> values, String fieldName) {
  for (ClassInstance.FieldValue fieldValue : values) {
    if (fieldValue.getField().getName().equals(fieldName)) {
      //noinspection unchecked
      return true;
    }
  }
  return false;
}
 

import com.squareup.haha.perflib.ClassInstance; //导入方法依赖的package包/类
private Instance findLeakingReference(String key, Snapshot snapshot) {
  ClassObj refClass = snapshot.findClass(KeyedWeakReference.class.getName());
  List<String> keysFound = new ArrayList<String>();
  for (Instance instance : refClass.getInstancesList()) {
    List<ClassInstance.FieldValue> values = classInstanceValues(instance);
    String keyCandidate = asString(fieldValue(values, "key"));
    if (keyCandidate.equals(key)) {
      return fieldValue(values, "referent");
    }
    keysFound.add(keyCandidate);
  }
  throw new IllegalStateException(
      "Could not find weak reference with key " + key + " in " + keysFound);
}
 

import com.squareup.haha.perflib.ClassInstance; //导入方法依赖的package包/类
public List<TrackedReference> findTrackedReferences(File heapDumpFile) {
  if (!heapDumpFile.exists()) {
    throw new IllegalArgumentException("File does not exist: " + heapDumpFile);
  }
  try {
    HprofBuffer buffer = new MemoryMappedFileBuffer(heapDumpFile);
    HprofParser parser = new HprofParser(buffer);
    Snapshot snapshot = parser.parse();
    deduplicateGcRoots(snapshot);

    ClassObj refClass = snapshot.findClass(KeyedWeakReference.class.getName());
    List<TrackedReference> references = new ArrayList<>();
    for (Instance weakRef : refClass.getInstancesList()) {
      List<ClassInstance.FieldValue> values = classInstanceValues(weakRef);
      String key = asString(fieldValue(values, "key"));
      String name =
          hasField(values, "name") ? asString(fieldValue(values, "name")) : "(No name field)";
      Instance instance = fieldValue(values, "referent");
      if (instance != null) {
        String className = getClassName(instance);
        List<String> fields = describeFields(instance);
        references.add(new TrackedReference(key, name, className, fields));
      }
    }
    return references;
  } catch (Throwable e) {
    throw new RuntimeException(e);
  }
}
 

import com.squareup.haha.perflib.ClassInstance; //导入方法依赖的package包/类
private Instance findLeakingReference(String key, Snapshot snapshot) {
  ClassObj refClass = snapshot.findClass(KeyedWeakReference.class.getName());
  List<String> keysFound = new ArrayList<>();
  for (Instance instance : refClass.getInstancesList()) {
    List<ClassInstance.FieldValue> values = classInstanceValues(instance);
    String keyCandidate = asString(fieldValue(values, "key"));
    if (keyCandidate.equals(key)) {
      return fieldValue(values, "referent");
    }
    keysFound.add(keyCandidate);
  }
  throw new IllegalStateException(
      "Could not find weak reference with key " + key + " in " + keysFound);
}
 

import com.squareup.haha.perflib.ClassInstance; //导入方法依赖的package包/类
static String fieldToString(ClassInstance.FieldValue fieldValue) {
  return fieldToString(fieldValue.getField(), fieldValue.getValue());
}
 

import com.squareup.haha.perflib.ClassInstance; //导入方法依赖的package包/类
static List<ClassInstance.FieldValue> classInstanceValues(Instance instance) {
  ClassInstance classInstance = (ClassInstance) instance;
  return classInstance.getValues();
}