PROGRAM, OPERATING SYSTEM AND COMPILERPROBLEM TO BE SOLVED: To reduce power consumption by optionally controlling operating frequencies in a control program of a microcomputer etc.CHIBA OSAMU千葉 修
死代码消除:删除永远不会被执行到的代码 compiler :https://godbolt.org/
Compiler: • Use the compiler after the program is complete • … to create an executable file • Use the compiler to repeatedly test the same (completed) section • … without having to re-interpret every time // compiler not needed at runtime machine independent:The program code can...
regardedas:被认为是；被当做是Resource:资源Layer:层、阶层Directly:直接地Raw:生的Compiler:编译器、编译程序Applicationprogram:应用程序 使变缓和Complexity:复杂、复杂性Inmanycases:在很多情况下、很多时候Becomposedof:由…组成、包括Contain:含有、包含Physicaldevice:物理...
编译器 | Compiler 加密| Cryptography 数据压缩 | Data Compression 数据持久性 | Data Persistence 数据类型 | Data Types 调试和分析 | Debugging & Profiling 开发工具 | Development Tools 文件和目录访问 | File & Directory Access 文件格式 | File Formats 构架| Frameworks 输入| Importing ...
different processes. First, the editor creates a file that serves as input to the compiler; the compiler uses that input file to create a new executable file (in many steps — take a compiler course for details); finally, the new executable is then run. And thus a new program is born!
2.13), the programmer works with an abstraction of memory that is a linear array into which a compiler assigns variable locations. Variable X could be stored in location 1010 in this imaginary (or virtual) array. The virtual memory abstraction is implemented using the twin mechanisms of page ...
Programexecution-Thesystemmustbeabletoloadaprogramintomemoryandtorunthatprogram,endexecution,eithernormallyorabnormally(indicatingerror)I/Ooperations-ArunningprogrammayrequireI/O,whichmayinvolveafileoranI/Odevice.File-systemmanipulation-Thefilesystemisofparticularinterest.Obviously,programsneedtoreadandwritefilesand...
Operating-SystemServices(1/3)•TheserviceswhichanOSissupposedtoprovidecanbecategorizedintotwoclasses –Theclassofservicesfortheusers–Theclassofservicesforensuringtheefficiencyofitself Operating-SystemServices(2/3)•Fromtheperspectiveofusers,wecanidentifythefollowingservices –Userinterface–Programexecution–I/O...
–Programexecution –I/Ooperations –File-systemmanipulation –Communications –Errordetection 不同的机构都有各自的特点,把各种机构按结构加以分类,其目的是按其分类建立运动分析和动力分析的一般方法。 Operating-SystemServices(3/3) •Theservicesforensuringtheefficiencyof thesystemitself ...