The dataflow programming paradigm shows an important way to improve programming productivity for streaming systems. In this paper we propose COStream, a programming language based on synchronous data flow execution model for data-driven application. We also propose a compiler framework for COStream on general-purpose multi-core architectures. It features an inter-thread software pipelining scheduler to exploit the parallelism among the cores. We implemented the COStream compiler framework on x86 multi-core architecture and performed experiments to evaluate the system.
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