Sharing operating system sub-processes across tasks

摘要

An operating system permits sharing of a sub-process (or process unit) across multiple processes (or tasks). Each shared sub-process has its own context. The sharing is enabled by tracking when a process invokes a sub-process. When a process invokes a sub-process, the process is designated as a parent process of the child sub-process. The invoked sub-process may require use of process level variable data. To enable storage of the process level variable data for each calling process, the variable data is stored in memory using a base address and a fixed offset. Although the based address may vary from process to process, the fixed offset remains the same across processes.

主权项

1. A non-transitory computer-readable medium storing a computer program that enables sharing of sub-processes across processes, the medium comprising:
an operating system code segment that executes a plurality of processes and a sub-process, the sub-process capable of being shared by the plurality of processes, the sub-process having its own context, the sub-process storing an address offset for calling process operands, the address offset being added to a base address to define an address space within a calling process context for the calling process operands.