circular buffer


Also found in: Wikipedia.

circular buffer

(programming)
An area of memory used to store a continuous stream of data by starting again at the beginning of the buffer after reaching the end. A circular buffer is usually written by one process and read by another. Separate read and write pointers are maintained. These are not allowed to pass each other otherwise either unread data would be overwritten or invalid data would be read.

A circuit may implement a hardware circular buffer.

circular buffer

An area of memory or a dedicated hardware circuit that is used to store incoming data. When the buffer is filled, new data are written starting at the beginning of the buffer. Circular buffers are typically used to hold data written by one process and read by another. In such cases, separate read and write pointers are used that are not allowed to cross each other so that unread data cannot be overwritten by new data.
References in periodicals archive ?
The camera can be programmed to trigger via motion detection or other signaling method, at which point it begins circular buffer recording.
Built Environment Characteristics of Study Participants Circular Buffer 500 m 1000 m n % n % Home Neighbourhood Environment Number of public recreation opportunities 0 291 30.
Such events are logged in a target-resident circular buffer by ThreadX, with time-stamping and active core-t-hread identification so they can be displayed later in the proper time sequence for the appropriate core.
The rest of this buffer is reserved to carry the data in the form of circular buffer (See Fig.
With the Enea BMP Tools log/trace facility, both text and binary log information may be collected in a single circular buffer that may be extracted either continuously or by discreet command.
In Enea's Bare Metal Performance Tools, both text and binary information may be collected in a single circular buffer that may be extracted either continuously or by discreet command.
0901818)] including three predictor variables: background concentration, percentage of land-use categories residential, and port, in a 5-km circular buffer.
The XDS560 Trace module is well-suited for identifying and resolving these types of bugs, employing a circular buffer to build a complete history of application execution with a completely non-intrusive, real-time data capture.
Such events are logged in a target-resident circular buffer by ThreadX, with time-stamping and active core-thread identification so they can be displayed later in the proper time sequence for the appropriate core.
An audio-optimized Dual Data Movement Accelerator (DMAX) performs efficient non-sequential external memory accesses and circular buffer management, improving the performance of long delay line algorithms, such as reverb.
Trace information is stored in a circular buffer on the target system with buffer size determined by the application.