Because most garbage collection algorithms stop the world for some period of time , a single - threaded garbage collector can quickly become a scalability bottleneck , because all but one processor are idle while the garbage collector has suspended the user program threads 因为大多数垃圾收集算法会在一段时间里使系统停止,单线程的收集器很快会成为伸缩性瓶颈,因为在垃圾收集器将用户程序线程挂起时,除了一个处理器之外,其他的处理器都是空闲的。
Under windows 2000 and by use of microsoft access of office 2000 , the database in this system was created , and also the save and management of data was implemented . the user program was developed by means of vb language . at the same time , the data of system is connected by calling the ado widget in visual basic and the storage and calling of system data is finished 本系统在windows2000环境下,利用office2000中的microsoftaccess软件建立了该管理系统所需要的数据库,并实现了对数据的保存和管理;使用visualbasic语言进行用户端程序开发;同时,通过调用visualbasic中的ado控件进行数据连接,完成该系统数据的存储和调用。
The program memory is divided into two areas : one is system area , the programs in which are written by the designer ; the other is user area , the programs in which are written by the user . user programs can be downloaded from the monitor computer , and can call system functions of system area 程序存储区分成系统区和用户区,系统区存储系统程序,事先由设计者提供;用户区存储用户程序,由用户通过上位机下载,它可以调用存储在系统区的系统函数( 4 )开发了用户接口界面,可以监控并配置asi系统。
So many dsp venders publish their dsp processors along with the software development environments ( mainly c - compiler ) for the users programming in c language so that the applications can get more portability and maintainability . but most commercial c - compilers are not as efficient as expected . so how to make a more efficient c - compiler become a very important problem and a research hotspot 由于现阶段大部分c编译器还不够高效,在实际应用中,还不得不用c ,汇编混合编程,甚至完全汇编编程的方式编写高效程序以满足日益苛刻的实时应用的需要,因此,开发出高效的面向可编程dsp芯片的c编译器成为当前研究的一个热点,也成为dsp芯片应用的当务之急。