Qualcomm Incorporated

Satya Jayaraman

Ashish Bajaj

Sachin Chaturvedi

Kuntal Dilipsinh Sampat

Balam Subhash

Ramakrishnan Ganesh Sundaram

Rajiv B Narayan

Ming Hu

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.

Sharing operating system sub-processes across tasks

Systems and methods of code evaluation for in-order processing are disclosed. In an embodiment, the method includes identifying a first instruction having multiple execution source paths. The method also includes generating a first execution path model identifying an execution order of multiple instructions based on a first condition and generating a second execution path model identifying an execution order of a second instruction based on a second condition. The method includes evaluating at least one of the execution path models to identify a hazard condition.

Code evaluation for in-order processing

A fast sub-process is provided in an operating system for a digital signal processor (DSP). The fast sub-process executes a sub-process without a kernel first determining whether the sub-process resides in an internal memory, as long as certain conditions have been satisfied. One of the conditions is that a programmer determines that the sub-process has been previously loaded into internal memory and executed. Another condition is that the programmer has ensured that a process calling the sub-process has not called any other sub-process between the last execution and the current execution request. Yet another condition is that the programmer ensures that the system has not called another overlapping sub-process between the last execution and the current execution request.

Operating system fast run command

Growing community of inventors

Hyderabad Telangana, India

Satya Jayaraman