Package harpoon.Backend.Runtime1

Runtime1 is the first implementation of a FLEX backend runtime system.

See:
Description

Interface Summary

AllocationStrategyFactory

AllocationStrategyFactory

Class Summary

AllocationStrategy	An AllocationStrategy is a particular implementation of a memory allocation routine.
AppelAllocationStrategy	A simple-minded version of Appel's fast-allocation strategy
BDWAllocationStrategy	BDWAllocationStrategy calls the appropriate C functions in the Boehm-Demers-Weiser conservative garbage collector library to do the allocation.
Data	Data is an abstract superclass with handy useful methods for the harpoon.IR.Tree.Data subclasses in Runtime1.
DataClaz	DataClaz lays out the claz tables, including the interface and class method dispatch tables.
DataConfigChecker	DataConfigChecker outputs some (never used) references which will be unresolved (resulting in linker errors at build-time) unless the runtime configuration matches the flex configuration.
DataGC	DataGC outputs the tables needed by the garbage collector.
DataInitializers	DataInitializers outputs a table listing the static initializers needed for the program, in the proper dependency order.
DataInterfaceList	DataInterfaceList lays out the expanded list of interfaces.
DataJavaMain	DataJavaMain outputs a labeled string pointer ("FNI_javamain") which tells the runtime with which method to begin execution of this java program.
DataReflection1	DataReflection1 creates tables which the JNI interface will use.
DataReflection2	DataReflection2 generates class information tables for each class, with lots of juicy information needed by JNI and java language reflection.
DataReflectionMemberList	DataReflectionMemberList creates tables which the JNI interface will use.
DataStaticFields	DataStaticFields lays out the static fields of a class.
DataStrings	DataStrings lays out string constant objects.
HeapStatsAllocationStrategy	HeapStatsAllocationStrategy calls the appropriate C functions in the --with-live-heap-statistics runtime code to collect statistics for objects and arrays allocated.
MallocAllocationStrategy	MallocAllocationStrategy calls a C function with the same prototype as malloc() to do the allocation.
NiftyAllocationStrategy	NiftyAllocationStrategy implements stack- and thread-clustered-allocation strategies.
NullAllocationStrategy	NullAllocationStrategy just returns a null pointer when asked for memory.
ObjectBuilder	ObjectBuilder is an implementation of harpoon.Backend.Generic.Runtime.ObjectBuilder for the Runtime1 runtime.
ObjectBuilder.RootOracle	A RootOracle allows a transformation to add fields to java.lang.Object (or any other class, really) and provide the initial values for that field in the various runtime constant objects without having to directly extend every ObjectInfo used in this Generic.Runtime implementation.
Runtime	Runtime1.Runtime is a no-frills implementation of the runtime abstract class.
Runtime.ExtraClazInfo	provides a means for a subclass to add extra fields to DataClaz.
RuntimeInformation	RuntimeInformation
SPAllocationStrategy	SPAllocationStrategy implements a "semi-precise" allocation strategy by providing the BDW collector with more precise information about pointer locations.
StubCode	StubCode is used to generate non-canonical tree code stubs for native methods.
TreeBuilder	Runtime1.TreeBuilder is an implementation of Generic.Runtime.TreeBuilder which creates accessor expressions for the Runtime1 runtime.

Package harpoon.Backend.Runtime1 Description

Runtime1 is the first implementation of a FLEX backend runtime system. It uses static layout of class and interface methods for fast invocation, and a 'class display' structure for fast instanceof tests. It includes information to support JNI native methods. It supports a variety of different memory allocation strategies.

Author:

C. Scott Ananian <cananian@alumni.princeton.edu>