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Allocator
Class HeapAllocator  

java.lang.Object
  Allocator.HeapAllocator

All Implemented Interfaces:

Clazz.jq_ClassFileConstants

Direct Known Subclasses:

SimpleAllocator

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public abstract class HeapAllocator

extends java.lang.Object

implements Clazz.jq_ClassFileConstants

HeapAllocator

Version:

$Id: HeapAllocator.java,v 1.16 2003/05/12 10:04:52 joewhaley Exp $

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Nested Class Summary
static class	HeapAllocator.HeapPointer           An object of this class represents a pointer to a heap address.

 

Field Summary
static Clazz.jq_StaticMethod	_clsinitAndAllocateObject
private static boolean	isOutOfMemory
private static java.lang.OutOfMemoryError	outofmemoryerror

 

Fields inherited from interface Clazz.jq_ClassFileConstants

ACC_ABSTRACT, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_TRANSIENT, ACC_VOLATILE, CONSTANT_Class, CONSTANT_Double, CONSTANT_FieldRef, CONSTANT_Float, CONSTANT_Integer, CONSTANT_InterfaceMethodRef, CONSTANT_Long, CONSTANT_MethodRef, CONSTANT_NameAndType, CONSTANT_ResolvedClass, CONSTANT_ResolvedIFieldRef, CONSTANT_ResolvedIMethodRef, CONSTANT_ResolvedSFieldRef, CONSTANT_ResolvedSMethodRef, CONSTANT_String, CONSTANT_Utf8, CONSUME_STACK, ILLEGAL_OPCODE, ILLEGAL_TYPE, jbc_AALOAD, jbc_AASTORE, jbc_ACONST_NULL, jbc_ALOAD, jbc_ALOAD_0, jbc_ALOAD_1, jbc_ALOAD_2, jbc_ALOAD_3, jbc_ANEWARRAY, jbc_ARETURN, jbc_ARRAYLENGTH, jbc_ASTORE, jbc_ASTORE_0, jbc_ASTORE_1, jbc_ASTORE_2, jbc_ASTORE_3, jbc_ATHROW, jbc_BALOAD, jbc_BASTORE, jbc_BIPUSH, jbc_BREAKPOINT, jbc_CALOAD, jbc_CASTORE, jbc_CHECKCAST, jbc_D2F, jbc_D2I, jbc_D2L, jbc_DADD, jbc_DALOAD, jbc_DASTORE, jbc_DCMPG, jbc_DCMPL, jbc_DCONST_0, jbc_DCONST_1, jbc_DDIV, jbc_DLOAD, jbc_DLOAD_0, jbc_DLOAD_1, jbc_DLOAD_2, jbc_DLOAD_3, jbc_DMUL, jbc_DNEG, jbc_DREM, jbc_DRETURN, jbc_DSTORE, jbc_DSTORE_0, jbc_DSTORE_1, jbc_DSTORE_2, jbc_DSTORE_3, jbc_DSUB, jbc_DUP, jbc_DUP_X1, jbc_DUP_X2, jbc_DUP2, jbc_DUP2_X1, jbc_DUP2_X2, jbc_F2D, jbc_F2I, jbc_F2L, jbc_FADD, jbc_FALOAD, jbc_FASTORE, jbc_FCMPG, jbc_FCMPL, jbc_FCONST_0, jbc_FCONST_1, jbc_FCONST_2, jbc_FDIV, jbc_FLOAD, jbc_FLOAD_0, jbc_FLOAD_1, jbc_FLOAD_2, jbc_FLOAD_3, jbc_FMUL, jbc_FNEG, jbc_FREM, jbc_FRETURN, jbc_FSTORE, jbc_FSTORE_0, jbc_FSTORE_1, jbc_FSTORE_2, jbc_FSTORE_3, jbc_FSUB, jbc_GETFIELD, jbc_GETSTATIC, jbc_GOTO, jbc_GOTO_W, jbc_I2B, jbc_I2C, jbc_I2D, jbc_I2F, jbc_I2L, jbc_I2S, jbc_IADD, jbc_IALOAD, jbc_IAND, jbc_IASTORE, jbc_ICONST_0, jbc_ICONST_1, jbc_ICONST_2, jbc_ICONST_3, jbc_ICONST_4, jbc_ICONST_5, jbc_ICONST_M1, jbc_IDIV, jbc_IF_ACMPEQ, jbc_IF_ACMPNE, jbc_IF_ICMPEQ, jbc_IF_ICMPGE, jbc_IF_ICMPGT, jbc_IF_ICMPLE, jbc_IF_ICMPLT, jbc_IF_ICMPNE, jbc_IFEQ, jbc_IFGE, jbc_IFGT, jbc_IFLE, jbc_IFLT, jbc_IFNE, jbc_IFNONNULL, jbc_IFNULL, jbc_IINC, jbc_ILOAD, jbc_ILOAD_0, jbc_ILOAD_1, jbc_ILOAD_2, jbc_ILOAD_3, jbc_IMUL, jbc_INEG, jbc_INSTANCEOF, jbc_INT2BYTE, jbc_INT2CHAR, jbc_INT2SHORT, jbc_INVOKEINTERFACE, jbc_INVOKENONVIRTUAL, jbc_INVOKESPECIAL, jbc_INVOKESTATIC, jbc_INVOKEVIRTUAL, jbc_IOR, jbc_IREM, jbc_IRETURN, jbc_ISHL, jbc_ISHR, jbc_ISTORE, jbc_ISTORE_0, jbc_ISTORE_1, jbc_ISTORE_2, jbc_ISTORE_3, jbc_ISUB, jbc_IUSHR, jbc_IXOR, jbc_JSR, jbc_JSR_W, jbc_L2D, jbc_L2F, jbc_L2I, jbc_LADD, jbc_LALOAD, jbc_LAND, jbc_LASTORE, jbc_LCMP, jbc_LCONST_0, jbc_LCONST_1, jbc_LDC, jbc_LDC_W, jbc_LDC2_W, jbc_LDIV, jbc_LLOAD, jbc_LLOAD_0, jbc_LLOAD_1, jbc_LLOAD_2, jbc_LLOAD_3, jbc_LMUL, jbc_LNEG, jbc_LOOKUPSWITCH, jbc_LOR, jbc_LREM, jbc_LRETURN, jbc_LSHL, jbc_LSHR, jbc_LSTORE, jbc_LSTORE_0, jbc_LSTORE_1, jbc_LSTORE_2, jbc_LSTORE_3, jbc_LSUB, jbc_LUSHR, jbc_LXOR, jbc_MONITORENTER, jbc_MONITOREXIT, jbc_MULTIANEWARRAY, jbc_NEW, jbc_NEWARRAY, jbc_NOP, jbc_POP, jbc_POP2, jbc_PUTFIELD, jbc_PUTSTATIC, jbc_RET, jbc_RETURN, jbc_SALOAD, jbc_SASTORE, jbc_SIPUSH, jbc_SWAP, jbc_TABLESWITCH, jbc_WIDE, NO_OF_OPERANDS, OPCODE_NAMES, PRODUCE_STACK, RESERVED, STATE_CLSINITERROR, STATE_CLSINITIALIZED, STATE_CLSINITIALIZING, STATE_CLSINITRUNNING, STATE_COMPILED, STATE_COMPILING, STATE_LOADED, STATE_LOADERROR, STATE_LOADING1, STATE_LOADING2, STATE_LOADING3, STATE_PREPARED, STATE_PREPARING, STATE_SFINITIALIZED, STATE_SFINITIALIZING, STATE_UNLOADED, STATE_VERIFIED, STATE_VERIFYING, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TC_ARRAY, TC_BOOLEAN, TC_BYTE, TC_CHAR, TC_CLASS, TC_CLASSEND, TC_DOUBLE, TC_FLOAT, TC_INT, TC_LONG, TC_PARAM, TC_PARAMEND, TC_SHORT, TC_VOID, TYPE_OF_OPERANDS, UNDEFINED, UNPREDICTABLE

 

Constructor Summary

HeapAllocator()

 

Method Summary
abstract  java.lang.Object	allocateArray(int length, int size, java.lang.Object vtable)           Allocate an array with the default alignment.
abstract  java.lang.Object	allocateArrayAlign8(int length, int size, java.lang.Object vtable)           Allocate an array such that the elements are 8-byte aligned.
abstract  java.lang.Object	allocateObject(int size, java.lang.Object vtable)           Allocate an object with the default alignment.
abstract  java.lang.Object	allocateObjectAlign8(int size, java.lang.Object vtable)           Allocate an object such that the first field is 8-byte aligned.
static java.lang.Object	clone(java.lang.Object o)           Clone the given object.
static java.lang.Object	clsinitAndAllocateObject(Clazz.jq_Type t)           Initialize class t and return a new uninitialized object of that type.
abstract  void	collect()           Initiate a garbage collection.
abstract  int	freeMemory()           Returns an estimate of the amount of free memory available.
static void	heapExhausted(Memory.Heap.Heap heap, int size, int count)           Handle heap exhaustion.
abstract  void	init()           Perform initialization for this allocator.
static void	outOfMemory()           Called in an out of memory situation.
abstract  void	processPtrField(Memory.Address a)           Process a reference to a heap object during garbage collection.
abstract  int	totalMemory()           Returns an estimate of the total memory allocated (both used and unused).

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

isOutOfMemory

private static boolean isOutOfMemory

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outofmemoryerror

private static final java.lang.OutOfMemoryError outofmemoryerror

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_clsinitAndAllocateObject

public static final Clazz.jq_StaticMethod _clsinitAndAllocateObject

Constructor Detail

HeapAllocator

public HeapAllocator()

Method Detail

init

public abstract void init()
                   throws java.lang.OutOfMemoryError

Perform initialization for this allocator. This will be called before any other methods.

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allocateObject

public abstract java.lang.Object allocateObject(int size,
                                                java.lang.Object vtable)
                                         throws java.lang.OutOfMemoryError

Allocate an object with the default alignment. If the object cannot be allocated due to lack of memory, throws OutOfMemoryError.

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allocateObjectAlign8

public abstract java.lang.Object allocateObjectAlign8(int size,
                                                      java.lang.Object vtable)
                                               throws java.lang.OutOfMemoryError

Allocate an object such that the first field is 8-byte aligned. If the object cannot be allocated due to lack of memory, throws OutOfMemoryError.

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allocateArray

public abstract java.lang.Object allocateArray(int length,
                                               int size,
                                               java.lang.Object vtable)
                                        throws java.lang.OutOfMemoryError,
                                               java.lang.NegativeArraySizeException

Allocate an array with the default alignment. If length is negative, throws NegativeArraySizeException. If the array cannot be allocated due to lack of memory, throws OutOfMemoryError.

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allocateArrayAlign8

public abstract java.lang.Object allocateArrayAlign8(int length,
                                                     int size,
                                                     java.lang.Object vtable)
                                              throws java.lang.OutOfMemoryError,
                                                     java.lang.NegativeArraySizeException

Allocate an array such that the elements are 8-byte aligned. If length is negative, throws NegativeArraySizeException. If the array cannot be allocated due to lack of memory, throws OutOfMemoryError.

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freeMemory

public abstract int freeMemory()

Returns an estimate of the amount of free memory available.

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totalMemory

public abstract int totalMemory()

Returns an estimate of the total memory allocated (both used and unused).

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collect

public abstract void collect()

Initiate a garbage collection.

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processPtrField

public abstract void processPtrField(Memory.Address a)

Process a reference to a heap object during garbage collection.

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clsinitAndAllocateObject

public static java.lang.Object clsinitAndAllocateObject(Clazz.jq_Type t)
                                                 throws java.lang.VerifyError

Initialize class t and return a new uninitialized object of that type. If t is not a class type, throw a VerifyError.

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clone

public static java.lang.Object clone(java.lang.Object o)
                              throws java.lang.OutOfMemoryError

Clone the given object. NOTE: Does not check if the object implements Cloneable.

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heapExhausted

public static void heapExhausted(Memory.Heap.Heap heap,
                                 int size,
                                 int count)
                          throws java.lang.OutOfMemoryError

Handle heap exhaustion.

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outOfMemory

public static void outOfMemory()
                        throws java.lang.OutOfMemoryError

Called in an out of memory situation.

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> [ Allocator overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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