In the1990s, when Copland was initiated," next-generation "meant supporting memory protection and preemptive multitasking, both of which classic Mac OS lacked. Copland始于上世纪90年代,「新一代」是指支持内存保护和抢先式多任务,当时的MacOS不支持这两项功能。
In the paper, μ C/ OS-ⅱ& a free code, preemptive and multitasking Real-Time Operation System has been selected as study object. 本文以源代码开放,实施优先级可抢占式调度策略的多任务实时操作系统μC/OS-Ⅱ为研究对象。
In preemptive and multitasking Real-Time Operation System, as a result of task subsequent execute as well as uses of shared resources, inevitable exists the danger of priority inversion which can affect the response time of high priority task. 在抢占式多任务实时操作系统中,由于任务的并发执行以及对共享资源的使用,必然存在优先级反转的危险,从而会影响到高优先级任务的响应时间。
The preemptive multitasking of the win32 system solves the shortage of low CPU utilizing and low transmission rate with using single process in video transmission. Win32系统抢先式多任务机制的推出解决了以前单进程图象序列编码传输存在的CPU资源利用率低、传输效率低等缺陷。
QP-nano is designed to work with just a "bare metal" target board, but can also be combined with the very lightweight Quantum Kernel Nano ( QK-nano) to provide preemptive multitasking capabilities ( requires more stack space). QP-nano设计的目的是工作在裸金属目标板,但是同样可以和提供可抢占式多任务的超级轻量级QuantumKernelNano(QK-nano)来配合使用。