Joseph A Ingoglia

US Patent:

52147800, May 25, 1993

Filed:

Mar 23, 1990

Appl. No.:

7/498206

Inventors:

Joseph P. Ingoglia - San Jose CA
Nayeem Islam - Mountain View CA

Assignee:

Sun Microsystems, Inc. - Mountain View CA

International Classification:

G06F 1540
G06F 700
G06F 940
G06F 1518

US Classification:

395600

Abstract:

In the system of the present invention, an event driven journaling mechanism which is not dependent on the timing of execution of processes is implemented. Special events, referred to as synchronization events, mark locations, referred to as synchronization points, in the journal file of events where previously initiated processing must be completed before initiating the subsequent process. The synchronization points are located between processes which are exchanging state. The synchronization events are put into the journal file during the recording phase. On playback, the journaling mechanism waits for a synchronization event to occur before proceeding to the next action in the journal file and initiating subsequent execution of the process.