Oracle International Corporation

Oracle America, Inc.

Douglas Norman Simon

Thomas Wuerthinger

Mario I Wolczko

Bernd J W Mathiske

Michael L Van De Vanter

Lukas Stadler

Michael Haupt

Christian Wimmer

Benjamin Lawrence Titzer

Gilles Marie Duboscq

Hannes E Payer

A method for resource management, including: identifying a resource map corresponding to a thread stack of a first thread; reading, in the resource map and by a computer processor, a bit value referencing an address of a first binary value in the thread stack; determining, based on the bit value and by the computer processor, that the first binary value corresponds to a managed resource; reading, by the computer processor, a resource identifier section of the first binary value after determining that the first binary value corresponds to the managed resource; determining a type of the managed resource based on the resource identifier section; interpreting, based on the type of the managed resource, at least a portion of a payload of the first binary value as a reference to a resource address of the managed resource in a resource storage; and accessing the managed resource using the reference.

Automatic management of heterogeneous memory resources

A method for a compiler includes receiving, by the compiler and from an interpreter, a representation of a code section having a control path that changes the representation. The representation has profiling data, and the profiling data has a threshold. The method further includes performing, by the compiler and based on the threshold, a partial evaluation of the interpreter executing the representation, compiling, by the compiler, a machine code of the representation, with the control path replaced by a deoptimization point during the compilation of the machine code, triggering the deoptimization point during execution of the machine code, and returning execution to the interpreter based on the triggering.

Self-optimizing interpreter and snapshot compilation

A method for managing an object watchpoint during a garbage collection cycle, including identifying an object having a field, where the object is associated with an original object location, where the field is associated with an original field location, and where the object and the field are located in a memory heap of a virtual machine memory, setting, within a debugger, the object watchpoint on the original field location, where the object watchpoint is a memory trap associated with the object, determining, after a relocation of the object by a garbage collector (GC), a new object location associated with the object, determining a new field location of the field based on the new object location, and setting, within the debugger, the object watchpoint on the new field location.

Tracking object fields using relocatable object watchpoints

Method and apparatus for automatically generating intermediate-level interfaces between program methods written in a platform-independent language and program methods written in a native language. A portable stub generator generates stubs in an intermediate, tokenized internal representation. The stub generator is portable across platforms as the stubs it generates are not platform-specific. In addition, the generated stubs are available to the compiler at intermediate compilation stages rather than at the backend compilation stage, and thus may be optimized together with the rest of the platform-independent code, and also may be inlined. The portable stub generator may be directed at virtual machine environments. An exemplary virtual machine environment in which the stub generator may be implemented is the Java&#x2122; Virtual Machine (JVM). In JVMs, Java&#x2122; is the platform-independent language, and Java&#x2122; bytecode the tokenized internal representation. In a JVM, the stubs may be generated in accordance with Java&#x2122; Native Interface (JNI).

Method and apparatus for portable stub generation

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Uster, Switzerland

Douglas Norman Simon