Wind River Glossary
Wind River Technical Glossary
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The z-order is the placement of windows along an imaginary z-axis that extends out from the display, perpendicular to the display itself. This stacking order determines visible and or obscured windows when other windows overlap or occupy the same area on the display.
Zero-copy sockets are an alternative set of socket calls based on a data abstraction called a zbuf, or zero-copy buffer. Zero-copy buffers are a data abstraction designed to allow software modules to share buffers without unnecessarily copying data. Alternate terms include zero-copy buffer, zero-copy socket, and zbuf.