A Linux-Based Implementation of a Middleware Model Supporting Time-Triggered Message-Triggered Objects

et al. 2007

Real-Time Syst

The Time-triggered Message-triggered Object (TMO) programming and specification scheme came out of an effort to remove the limitations of conventional object structuring techniques in developing real-time (RT) distributed computing components and composing distributed computing applications out of such components and others. It is a natural and syntactically small but semantically pow-76 Real-Time Syst (2007) 36: erful extension of the object oriented (OO) design and implementation techniques which allows the system designer to specify in natural and yet precise forms timing requirements imposed on data and function components of high-level distributed computing objects. TMO Support Middleware (TMOSM) was devised to be an efficient middleware architecture that can be easily adapted to many commercial-off-theshelf (COTS) hardware + kernel operating system platforms to form efficient TMO execution engines. However, up until 2003, its adaptations were done for Microsoft Windows platforms only. As we have been developing and refining an adaptation of TMOSM to the Linux 2.6 operating system platform in recent years, TMOSM has been refined to possess further improved modularity and portability. This paper presents the refined TMOSM as well as the techniques developed for efficient adaptation of TMOSM to the Linux 2.6 platform.

“…All these performance data are significantly better than those in (Jenks et al 2005). That is mainly because of the improved implementation techniques in Sects.…”

Section: Resultsmentioning

confidence: 87%

A middleware model supporting time-triggered message-triggered objects for standard Linux systems

Jenks

et al. 2007

Real-Time Syst

“…Prototype implementations running on three major OS kernel platforms, Windows XP, Windows CE, and Linux v2.6, exist (http://dream.eng.uci.edu/TMOdownload/) [1].…”

Section: Introductionmentioning

confidence: 99%

The TMO Scheme for Wide-Area Distributed Real-Time Computing and Distributed Time-Triggered Simulation

2007 IEEE International Parallel and Distributed Processing Symposium

Jenks

2007

“…However, a TMO program requires a new execution engine which is typically a combination of hardware, commercial OS kernel, and middleware specifically built to support TMOs. The core of this engine is the middleware and one particular version built by us in UCI is the TMO Support Middleware (TMOSM) [8,9,11]. A friendly programming interface wrapping the execution support services of TMOSM has also been developed and named the TMO Support Library (TMOSL) [7,8,9].…”

Section: Introductionmentioning

confidence: 99%

Approaches for Inheritance in the TMO Programming Scheme

Reliable Systems on Unreliable Networked Platforms

Inheritance in real-time object-oriented programming is a young subject for research, let alone for practice. Issues in inheritance design are discussed in the context of TMO (Time-Triggered Message-Triggered Object) scheme for real-time distributed object programming. The TMO scheme guides programmers to incorporate timing specifications in natural, modular, and easily analyzable forms. The scheme thus makes it relatively easy to practice inheritance design. Some TMO structuring rules and styles that enable efficient design of inheritance are presented. A GUI-based approach for TMO-framework programming with exploitation of inheritance is also discussed.