The hardware achitecture of home integrated services terminal is mainly composed of the following five parts : dvb - based front - end interactive module , video and audio data processing module , output presentation module , peripheral equipment data interface module , memory management module 其硬件結(jié)構(gòu)大體可分為dvb前端交互模塊、音視頻數(shù)據(jù)處理模塊、輸出呈現(xiàn)模塊、外圍設(shè)備數(shù)據(jù)接口模塊和存儲(chǔ)器管理模塊這五個(gè)主要單元。
By associating the synchronization point of process with thread status , tc looks into and confines the correct sequence of memory access events from the os aspect to ensure programs correct running . tc organically associates process management module with memory management module 線程一致性模型通過將并行程序執(zhí)行過程中的同步點(diǎn)和線程狀態(tài)結(jié)合起來,從操作系統(tǒng)的角度來觀察和限制存儲(chǔ)訪問的正確順序,從而保證了并行程序的正確執(zhí)行。
The linux kernel possesses the rich software resources , mature functions , steady working behavior . this paper clarifies the modules that make up the kernel , especially analyses the memory management module and the process management module , introduces the virtue file system module , the inter process communication module and the network module . so we have the deep theory foundation to reconstruct the kernel Linux的內(nèi)核是一個(gè)軟件資源十分豐富,功能完善,工作穩(wěn)定的系統(tǒng)內(nèi)核,本文對(duì)其組成模塊進(jìn)行了深入的分析,著重剖析了內(nèi)核的內(nèi)存管理模塊和進(jìn)程管理模塊,介紹了虛擬文件系統(tǒng)模塊、進(jìn)程通信模塊、網(wǎng)絡(luò)接口模塊的工作原理,為對(duì)linux內(nèi)核進(jìn)行改造奠定了堅(jiān)實(shí)的理論基礎(chǔ)。