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comparison agent/src/share/classes/sun/jvm/hotspot/utilities/HeapHprofBinWriter.java @ 2177:3582bf76420e

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6990754: Use native memory and reference counting to implement SymbolTable Summary: move symbols from permgen into C heap and reference count them Reviewed-by: never, acorn, jmasa, stefank
author coleenp
date Thu, 27 Jan 2011 16:11:27 -0800
parents c18cbe5936b8
children 32f7097f9d8f
comparison
equal deleted inserted replaced
2176:27e4ea99855d 2177:3582bf76420e
738 // ik == null for instance fields. 738 // ik == null for instance fields.
739 out.writeShort((short) fields.size()); 739 out.writeShort((short) fields.size());
740 for (Iterator itr = fields.iterator(); itr.hasNext();) { 740 for (Iterator itr = fields.iterator(); itr.hasNext();) {
741 Field field = (Field) itr.next(); 741 Field field = (Field) itr.next();
742 Symbol name = symTbl.probe(field.getID().getName()); 742 Symbol name = symTbl.probe(field.getID().getName());
743 writeObjectID(name); 743 writeSymbolID(name);
744 char typeCode = (char) field.getSignature().getByteAt(0); 744 char typeCode = (char) field.getSignature().getByteAt(0);
745 int kind = signatureToHprofKind(typeCode); 745 int kind = signatureToHprofKind(typeCode);
746 out.writeByte((byte)kind); 746 out.writeByte((byte)kind);
747 if (ik != null) { 747 if (ik != null) {
748 // static field 748 // static field
850 } 850 }
851 851
852 private void writeSymbol(Symbol sym) throws IOException { 852 private void writeSymbol(Symbol sym) throws IOException {
853 byte[] buf = sym.asString().getBytes("UTF-8"); 853 byte[] buf = sym.asString().getBytes("UTF-8");
854 writeHeader(HPROF_UTF8, buf.length + OBJ_ID_SIZE); 854 writeHeader(HPROF_UTF8, buf.length + OBJ_ID_SIZE);
855 writeObjectID(sym); 855 writeSymbolID(sym);
856 out.write(buf); 856 out.write(buf);
857 } 857 }
858 858
859 private void writeClasses() throws IOException { 859 private void writeClasses() throws IOException {
860 // write class list (id, name) association 860 // write class list (id, name) association
867 Instance clazz = k.getJavaMirror(); 867 Instance clazz = k.getJavaMirror();
868 writeHeader(HPROF_LOAD_CLASS, 2 * (OBJ_ID_SIZE + 4)); 868 writeHeader(HPROF_LOAD_CLASS, 2 * (OBJ_ID_SIZE + 4));
869 out.writeInt(serialNum); 869 out.writeInt(serialNum);
870 writeObjectID(clazz); 870 writeObjectID(clazz);
871 out.writeInt(DUMMY_STACK_TRACE_ID); 871 out.writeInt(DUMMY_STACK_TRACE_ID);
872 writeObjectID(k.getName()); 872 writeSymbolID(k.getName());
873 serialNum++; 873 serialNum++;
874 } catch (IOException exp) { 874 } catch (IOException exp) {
875 throw new RuntimeException(exp); 875 throw new RuntimeException(exp);
876 } 876 }
877 } 877 }
897 // writes unique ID for an object 897 // writes unique ID for an object
898 private void writeObjectID(Oop oop) throws IOException { 898 private void writeObjectID(Oop oop) throws IOException {
899 OopHandle handle = (oop != null)? oop.getHandle() : null; 899 OopHandle handle = (oop != null)? oop.getHandle() : null;
900 long address = getAddressValue(handle); 900 long address = getAddressValue(handle);
901 writeObjectID(address); 901 writeObjectID(address);
902 }
903
904 private void writeSymbolID(Symbol sym) throws IOException {
905 writeObjectID(getAddressValue(sym.getAddress()));
902 } 906 }
903 907
904 private void writeObjectID(long address) throws IOException { 908 private void writeObjectID(long address) throws IOException {
905 if (OBJ_ID_SIZE == 4) { 909 if (OBJ_ID_SIZE == 4) {
906 out.writeInt((int) address); 910 out.writeInt((int) address);