Abstract: A system and method for monitoring internal operation of a virtual machine (“VM”). The VM is operated to interpret and execute a program. During operation of the VM, status information regarding internal operation of the VM is stored to an internal memory buffer. The status information is subsequently extracted from the internal memory buffer during operation of the VM to monitor internal operation of the VM from a vantage point external to the VM.

Abstract: A method and system for generating common trace files for multiple components. In one embodiment, separate trace information is received from multiple components. The separate trace information received from multiple components is integrated into a single common trace file to provide common trace information for multiple components.

Abstract: A system and method to monitor worker threads within a Java virtual machine. At least one program is executed on the Java virtual machine to perform a task. A worker thread of the Java virtual machine is assigned to perform the task. Status information for the worker thread is generated and reported into memory external to the Java virtual machine to enable monitoring of the worker thread from external to the Java virtual machine.

Abstract: Methods and apparatus, including computer program products, that implement thread-level resource usage measurement. A runtime system to run on top of a native operating system can be operable to perform operations including running threads; taking snapshots of usage of one or more resources in the runtime system, including taking a first snapshot corresponding to a start of execution a thread and a second snapshot corresponding to an end of execution of the thread, where the first snapshot is taken before the second snapshot; and calculating usage of the resources by the thread based on the snapshots. The threads can be running in a virtual machine and snapshots can be measurements of resources at the operating system level.

Abstract: A system and method to debug a thread without affecting other threads in a virtual machine. A virtual machine (VM) may execute a thread subject to debugging and another thread. An interface to the VM permits only debugging command that are specific to the thread subject to debugging to affect the VM.

Abstract: A system and method are described for performing data processing using shared memory and socket-like application programming interface. In one embodiment, a plurality of handles is employed and associated with a plurality of processes. The plurality of handles may serve as communication end-points for communication of data. Further, an application programming interface is employed to present the plurality of handles as the application programming interface for sockets for facilitating the communication of data compatible with a programming language. The data is communicated between the plurality of processes via the socket-like plurality of handles.

Abstract: A system and method for integrating different virtual machines (“VMs”). A first VM is loaded into an Application Server (“AS”) instance. The first VM includes standard features accessible through a standard native interface. A second VM is loaded into the AS instance including the standard features and extended features. The standard features provided by the second VM are accessed by native platform entities through a standardized native interface. The extended features provided by the second VM are accessed by the native platform entities through an adaptation interface.

Abstract: A system and method to monitor a virtual machine VM. The VM executes one or more applications. During executing of the one or more applications, local objects are created and stored within an internal heap maintained by the VM. Status data of the internal heap is published to monitoring memory external to the VM.

Abstract: A memory architecture includes at any given point in time a contiguous memory window located at a fixed virtual address space comprising a first context to be shared by a plurality of worker processes in an application server instance and at least a second context to be attached to only one of the plurality of worker processes in the application server instance.

Abstract: A system and method to monitor client sessions within a Java virtual machine. Client sessions are established within an application server instance to store session context data for each of the client sessions during the client sessions. At least two Java virtual machines are operated within the application server instance to service client requests received from clients associated with each of the client sessions. Status information about each of the client sessions is reported into shared memory external to the Java virtual machines to monitor each of the client sessions during operation of the Java virtual machines.

Abstract: An application having an associated and a graphical user interface is initiated. Thereafter, the widget determines a first state of the application. Once the first state of the application is determined, the widget calls at least one remote repository to retrieve one or more electronic annotations associated with the first state of the application. These electronic annotations are then displayed in connection with the graphical user interface of the application.

Abstract: A memory architecture includes at any given point in time a contiguous memory window located at a fixed virtual address space comprising a first context to be shared by a plurality of worker processes in an application server instance and at least a second context to be attached to only one of the plurality of worker processes in the application server instance.

Abstract: A method and system for generating common trace files for multiple components. In one embodiment, separate trace information is received from multiple components. The separate trace information received from multiple components is integrated into a single common trace file to provide common trace information for multiple components.

Abstract: A system and method for integrating different virtual machines (“VMs”). A first VM is loaded into an Application Server (“AS”) instance. The first VM includes standard features accessible through a standard native interface. A second VM is loaded into the AS instance including the standard features and extended features. The standard features provided by the second VM are accessed by native platform entities through a standardized native interface. The extended features provided by the second VM are accessed by the native platform entities through an adaptation interface.

Abstract: A system and method for monitoring internal operation of a virtual machine (“VM”). The VM is operated to interpret and execute a program. During operation of the VM, status information regarding internal operation of the VM is stored to an internal memory buffer. The status information is subsequently extracted from the internal memory buffer during operation of the VM to monitor internal operation of the VM from a vantage point external to the VM.

Abstract: A system and method to monitor a virtual machine VM. The VM executes one or more applications. During executing of the one or more applications, local objects are created and stored within an internal heap maintained by the VM. Status data of the internal heap is published to monitoring memory external to the VM.

Abstract: A system and method to debug a thread without affecting other threads in a virtual machine. A virtual machine (VM) may execute a thread subject to debugging and another thread. An interface to the VM permits only debugging command that are specific to the thread subject to debugging to affect the VM.

Abstract: A system and method to monitor worker threads within a Java virtual machine. At least one program is executed on the Java virtual machine to perform a task. A worker thread of the Java virtual machine is assigned to perform the task. Status information for the worker thread is generated and reported into memory external to the Java virtual machine to enable monitoring of the worker thread from external to the Java virtual machine.

Abstract: A system and method to monitor client sessions within a Java virtual machine. Client sessions are established within an application server instance to store session context data for each of the client sessions during the client sessions. At least two Java virtual machines are operated within the application server instance to service client requests received from clients associated with each of the client sessions. Status information about each of the client sessions is reported into shared memory external to the Java virtual machines to monitor each of the client sessions during operation of the Java virtual machines.

Abstract: An apparatus and method to permit switching between use of a productive interpreter loop and debugging interpreter loop in an operational virtual machine (VM). A VM may execute both a productive interpreter loop and a debugging interpreter loop. An application programming interface (API) may be provided to trigger a switch from the productive interpreter loop to the debugging interpreter loop while the VM remains operational.