Abstract
Effectively using shared-memory multiprocessors requires substantial programming effort. We present the programming language COOL (Concurrent Object-Oriented Language), which was designed to exploit coarse-grained parallelism at the task level in shared-memory multiprocessors. COOL's primary design goals are efficiency and expressiveness. By efficiency we mean that the language constructs should be efficient to implement and a program should not have to pay for features it does not use. By expressiveness, we imply that the program should flexibly support different concurrency patterns, thereby allowing various decompositions of a problem. COOL emphasizes the integration of concurrency and synchronization with data abstraction to ease the task of creating modular and efficient parallel programs. It is an extension of C++, which was chosen because it supports abstract data type definitions and is widely used. >
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