This paper proposes a new language for the development of distributed multimedia applications: Quality Assurance Language (QuAL). QuAL abstractions allow the specification of Quality of Service (QoS) constraints expected from the underlying computing and communication environment. QuAL specifications are compiled into run time components that monitor the actual QoS delivered. Upon QoS violations, application provided exception handlers are signaled to act upon the faulty events. Language level abstractions of QoS shelter programs from the heterogeneity of underlying infrastructures. This simplifies the development and maintenance of multimedia applications and promotes their portability and reuse. QuAL generates Management Information Bases (MIBs) that contain QoS statistics per application. Such MIBs may be used to integrate application level QoS management into standard network management frameworks.
[1]
Patrícia Gomes Soares,et al.
On remote procedure call
,
1992
.
[2]
C. A. R. Hoare,et al.
Communicating Sequential Processes (Reprint)
,
1983,
Commun. ACM.
[3]
Wolfgang Effelsberg,et al.
MCAM: an application layer protocol for movie control, access, and management
,
1993,
MULTIMEDIA '93.
[4]
Wolfgang A. Halang,et al.
Constructing Predictable Real Time Systems
,
1991
.
[5]
Ramesh Govindan,et al.
Support for continuous media in the DASH system
,
1990,
Proceedings.,10th International Conference on Distributed Computing Systems.
[6]
Brian W. Kernighan,et al.
The C Programming Language
,
1978
.