摘要:
An improved method, apparatus, and computer instructions for managing a heap. Live objects in portions of space in the heap are marked in response to a request to reclaim space in the heap. The portions of space are moved into a virtual memory in response to marking the live objects. The old objects are removed from the portions of space in the heap in the virtual memory.
摘要:
A method, apparatus, and computer instructions for managing versioning data for a state between a first virtual machine on a data processing system and a second virtual machine on a remote data processing system. Versioning information is stored in response to a request to generate a version in the first virtual machine. A request is sent to the second virtual machine for the second virtual machine to generate a corresponding version. The version and the corresponding version are used to restore the first virtual machine and the second virtual machine to the prior state. The prior state in the first virtual machine is restored using the stored version when a subsequent request is received to restore the prior state. A subsequent request is sent to the second virtual machine. This request requests restoring the prior state for the second virtual machine using the corresponding version.
摘要:
An improved method, apparatus, and computer instructions for writing a page of data in response to receiving a request to write the page in the paged memory system. Creating a version of the page of data in response to receiving the request to write the page in the paged memory system, and associating a version identifier with the version of the page.
摘要:
An improved method, apparatus, and computer instructions for a method in a data processing system for managing versioning data in a heap. A versioning data structure for an object in the heap is located, wherein the versioning data structure is used to store changes in data for the object and wherein the object is associated with the versioning data structure. A determination is made as to whether versioning data in the versioning data structure exceeds a threshold. The versioning data is removed from the heap in response to the versioning data exceeding the threshold.
摘要:
A method, apparatus, and computer instructions for marking data versioning for code. Responsive to receiving an application programming interface call, a first marking statement in the code and a second marking statement are inserted in the code. A portion of code between the first marking statement and the second marking statement forms a marked section of code. A change made in data in an object caused by execution of the marked portion of code is detected. The detected change is tracked in manner such that the object may be restored to a prior state.
摘要:
A computer implemented method, apparatus, and computer usable code for managing versioning data for objects in a virtual machine. A request to allocate an object is received, wherein the request identifies a plurality of parameters for classifying the object. An entry for the object is created in a versioning data structure using the plurality of parameters received in the request. The versioning data structure is used to store delta data for change in the data for the object and wherein the object is associated with the data structure. When a change in the data for the object occurs, the delta data is stored in the versioning data structure based on the plurality of parameters. A particular version of the object may be retrieved using the plurality of parameters.
摘要:
An improved method, apparatus, and computer instructions for receiving a call to create a version. State information for at least one of the device driver and a device associated with the device driver is identified to form identified state information in response to receiving the call, the identified state information is stored in association with a version identifier.
摘要:
A computer implemented method, apparatus, and a computer usable program code for managing versioning of a set objects in a network data processing system. A first message is sent to a plurality of data processing systems to cause the plurality of data processing systems to generate delta data for the set of objects on the plurality of data processing systems in the network data processing system in response to a first event. The delta data is stored for each object in the set of objects to form stored delta data, and the stored delta data is subsequently used to return the set of objects to a prior version. A second message is sent to the plurality of data processing systems to cause the plurality of data processing systems to restore the set of objects back to the prior version using the stored delta data in response to a second event in managing versioning of the set of objects.
摘要:
A computer implemented method, apparatus, and a computer usable program code for managing objects. First, versioning data and a version identifier are stored for the object in a data structure in response to a request to create a version of an object. A determination is made as to whether the object references a set of dependent objects having data upon which the object depends. Additional versioning data and the version identifier is stored for the set of dependent objects in response to the object referencing the set of dependent objects. The object and the dependent objects may be returned to a prior state using the first versioning data, the additional versioning data, and the version identifier.
摘要:
A method, apparatus, and computer instructions for managing object properties. A setter call is received from an application, wherein the setter call includes data. A determination is made as to whether the setter call is versionable. The setter call is executed if the call is a versionable call, wherein versioning data is saved in executing the setter call.