Cyclic buffer management

Abstract

Systems and methods for cyclic buffer management are described. In one aspect, the systems and methods enable cyclic buffer wrap-around write operations independent of temporary buffer allocations and corresponding multiple data copies. To this end, the systems and methods map the cyclic buffer's physical addresses two-times ('doubly map') to a consecutive block of virtual memory. When an application desires to write beyond the end of what represents the cyclic buffer, the systems and methods provide a logical pointer to the doubly mapped virtual memory, enabling the application to directly write into the virtual memory from the end of the first cyclic buffer mapping to the beginning of the second cyclic buffer mapping. The memory management operations automatically transfer the data out of this doubly mapped virtual memory into the cyclic buffer for subsequent extraction and presentation to the user.