会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 发明授权
    • Semaphore in system I/O space
    • 系统I / O空间中的信号量
    • US6134579A
    • 2000-10-17
    • US911842
    • 1997-08-15
    • Siamak TavallaeiJeffrey S. Autor
    • Siamak TavallaeiJeffrey S. Autor
    • G06F15/177G06F9/46G06F13/362G06F9/00
    • G06F9/52G06F2209/503
    • A computer system utilizing multiple processes includes a semaphore for controlling exclusive access of a single process to a selected resource. The semaphore is implemented in the system input/output and controlled, at least in part, by an application specific integrated circuit (ASIC). When a process is attempting to acquire an I/O resource, a read is sent to the semaphore. If the resource is available the semaphore will have a first value, and the semaphore will return that first value to the process indicating that the process has acquired the resource. The ASIC will then change the semaphore value to a second value. If the resource is not available the semaphore will have the second value, and the semaphore will return the second value to the process indicating that the resource is not available.
    • 利用多个进程的计算机系统包括用于控制单个进程对所选资源的独占访问的信号量。 信号量在系统输入/输出中实现,至少部分地由专用集成电路(ASIC)控制。 当进程尝试获取I / O资源时,会将读取信息发送到信号量。 如果资源可用,则信号量将具有第一个值,并且信号量将返回该指示进程已获取资源的进程的第一个值。 然后,ASIC将信号量值更改为第二个值。 如果资源不可用,则信号量将具有第二个值,并且信号量将将第二个值返回给指示资源不可用的进程。