This second way builds off the single rectangle , with the component s name in it , and places what the uml 2 specification calls interface symbols " connected to the outside of the rectangle 这个方法是建立一个里面有组件名的大长方形,并在长方形的外面放置在uml 2规范中称为接口符号的东西。
We construct a serial communication clsss to read and write the port of serial communication . when we handle the port of serial communication , we call interface functions of the serial communication clsss 在串口通信模块的实现中,通过构造一个串口通信类,对串口进行操作时,只需调用串口通信类提供的接口函数,就可完成串口读写。
This thesis invesigates the kernel of uclinux , which is different from the mainstream linux . according to the mmu - less embedded micro - processors , uclinux removes the parts correspond to the virtual memory management , changes some of the system call interfaces and adopts the binary flat format to allow the program to be executed in place . the thesis also describes how to port uclinux to m68k platform and run it smoothly 本文详细阐述了uclinux针对嵌入式应用、基于无内存管理单元的特性对标准linux进行的改良。主要包括没有虚拟内存机制的内存管理,系统接口的改变,独特的运行方式xip和可执行文件格式bflt 。本文同时介绍了uclinux的板级移植过程以及如何运行一个完整的uclinux操作系统。
Research on the oracle oci class realization : using oci ( oracle call interface ) as the oracle db interface we can get high efficiency and platform compatibility . but the original c based oci access is quite complex and difficult to use , a method of how to encapsulate a c + + oci class is studied in this part , and an automatic recovery mechanism of fault tolerant network accessing is also provided Oracle数据库连接接口研究:针对oracle数据库提供的oci ( oraclecallinterface )函数库接口调用的困难,介绍了如何使用c + +实现oci调用函数的类封装,为mrd2k ? jh各子系统提供了独立、统一、简便、高效、可靠、跨平台的数据库应用接口,尤其对一次登录频繁使用的场合使系统整体效率大为改善:并对数据库的容错访问提出了一套定时恢复的策略机制。
First it supports the system call interfaces complied with the posix standard , which make convenience to the porting process to delta os for applications . second , delta file 3 . 0 offers the entire supports to the fat logic file system format , and make it suitable in multitasks environment through technique process . once more , delta file 3 . 0 support the flexible virtual file system interface and drive manage interface to make update easier 首先,其系统调用接口遵循posix规范,以便于应用向deltaos进行移植;其次, deltafile3 . 0提供了对fat全系列逻辑文件系统格式(含fat12 、 fat16 、 fat32 )的完全支持,并通过改造将fat这种源于单任务操作系统dos的文件系统标准应用于多任务环境;此外, deltafile3 . 0提供了灵活的虚拟文件系统接口和设备驱动管理接口,便于未来的升级和扩展。