//
// Handle a HPROF_GC_INSTANCE_DUMP
// Return number of bytes read
//
private int readInstance() throws IOException {
long start = in.position();
long id = readID();
StackTrace stackTrace = getStackTraceFromSerial(in.readInt());
long classID = readID();
int bytesFollowing = in.readInt();
int bytesRead = (2 * identifierSize) + 8 + bytesFollowing;
JavaObject jobj = new JavaObject(classID, start);
skipBytes(bytesFollowing);
snapshot.addHeapObject(id, jobj);
snapshot.setSiteTrace(jobj, stackTrace);
return bytesRead;
}
//
// Handle a HPROF_GC_OBJ_ARRAY_DUMP or HPROF_GC_PRIM_ARRAY_DUMP
// Return number of bytes read
//
private int readArray(boolean isPrimitive) throws IOException {
long start = in.position();
long id = readID();
StackTrace stackTrace = getStackTraceFromSerial(in.readInt());
int num = in.readInt();
int bytesRead = identifierSize + 8;
long elementClassID;
if (isPrimitive) {
elementClassID = in.readByte();
bytesRead++;
} else {
elementClassID = readID();
bytesRead += identifierSize;
}
// Check for primitive arrays:
byte primitiveSignature = 0x00;
int elSize = 0;
if (isPrimitive || version < VERSION_JDK12BETA4) {
switch ((int) elementClassID) {
case T_BOOLEAN:
{
primitiveSignature = (byte) 'Z';
elSize = 1;
break;
}
case T_CHAR:
{
primitiveSignature = (byte) 'C';
elSize = 2;
break;
}
case T_FLOAT:
{
primitiveSignature = (byte) 'F';
elSize = 4;
break;
}
case T_DOUBLE:
{
primitiveSignature = (byte) 'D';
elSize = 8;
break;
}
case T_BYTE:
{
primitiveSignature = (byte) 'B';
elSize = 1;
break;
}
case T_SHORT:
{
primitiveSignature = (byte) 'S';
elSize = 2;
break;
}
case T_INT:
{
primitiveSignature = (byte) 'I';
elSize = 4;
break;
}
case T_LONG:
{
primitiveSignature = (byte) 'J';
elSize = 8;
break;
}
}
if (version >= VERSION_JDK12BETA4 && primitiveSignature == 0x00) {
throw new IOException("Unrecognized typecode: " + elementClassID);
}
}
if (primitiveSignature != 0x00) {
int size = elSize * num;
bytesRead += size;
JavaValueArray va = new JavaValueArray(primitiveSignature, start);
skipBytes(size);
snapshot.addHeapObject(id, va);
snapshot.setSiteTrace(va, stackTrace);
} else {
int sz = num * identifierSize;
bytesRead += sz;
JavaObjectArray arr = new JavaObjectArray(elementClassID, start);
skipBytes(sz);
snapshot.addHeapObject(id, arr);
snapshot.setSiteTrace(arr, stackTrace);
}
return bytesRead;
}
//
// Handle a HPROF_GC_CLASS_DUMP
// Return number of bytes read
//
private int readClass() throws IOException {
long id = readID();
StackTrace stackTrace = getStackTraceFromSerial(in.readInt());
long superId = readID();
long classLoaderId = readID();
long signersId = readID();
long protDomainId = readID();
long reserved1 = readID();
long reserved2 = readID();
int instanceSize = in.readInt();
int bytesRead = 7 * identifierSize + 8;
int numConstPoolEntries = in.readUnsignedShort();
bytesRead += 2;
for (int i = 0; i < numConstPoolEntries; i++) {
int index = in.readUnsignedShort(); // unused
bytesRead += 2;
bytesRead += readValue(null); // We ignore the values
}
int numStatics = in.readUnsignedShort();
bytesRead += 2;
JavaThing[] valueBin = new JavaThing[1];
JavaStatic[] statics = new JavaStatic[numStatics];
for (int i = 0; i < numStatics; i++) {
long nameId = readID();
bytesRead += identifierSize;
byte type = in.readByte();
bytesRead++;
bytesRead += readValueForType(type, valueBin);
String fieldName = getNameFromID(nameId);
if (version >= VERSION_JDK12BETA4) {
type = signatureFromTypeId(type);
}
String signature = "" + ((char) type);
JavaField f = new JavaField(fieldName, signature);
statics[i] = new JavaStatic(f, valueBin[0]);
}
int numFields = in.readUnsignedShort();
bytesRead += 2;
JavaField[] fields = new JavaField[numFields];
for (int i = 0; i < numFields; i++) {
long nameId = readID();
bytesRead += identifierSize;
byte type = in.readByte();
bytesRead++;
String fieldName = getNameFromID(nameId);
if (version >= VERSION_JDK12BETA4) {
type = signatureFromTypeId(type);
}
String signature = "" + ((char) type);
fields[i] = new JavaField(fieldName, signature);
}
String name = classNameFromObjectID.get(new Long(id));
if (name == null) {
warn("Class name not found for " + toHex(id));
name = "unknown-name@" + toHex(id);
}
JavaClass c =
new JavaClass(
id,
name,
superId,
classLoaderId,
signersId,
protDomainId,
fields,
statics,
instanceSize);
snapshot.addClass(id, c);
snapshot.setSiteTrace(c, stackTrace);
return bytesRead;
}