Method for managing concurrent accesses to a memory by several users.

摘要

A method for managing concurrent accesses to a memory by several users sharing the processing time of a data processor so as each to execute a sequence of instructions of the said processor in order to read or write data from or into memory areas of the said memory on the basis of an index having a value identifying a memory area in the said memory. The sequence of instructions employs the following operations in order: a) recording of the value of the index in a first memory register (20), b) summation of the contents of the first memory register with an increment value (30), c) recording of the result of the summation in a second memory register (30), d) atomic permutation of the value of the index with the contents of the second memory register (40), e) if (50) the contents of the second memory register are identical to the old value of the index, then take the contents of the first register as current index value, else recommence operations a), b), c), d), e).