TAILIEUCHUNG - Chuong 04 - Process

4. Quaûn lyù quaù trình. Khaùi nieäm cô baûn. Ñònh thôøi CPU. Caùc taùc vuï cô baûn: taïo/keát thuùc quaù. trình. Söï coäng taùc giöõa caùc quaù trình. Giao tieáp giöõa caùc quaù trình. Khoa Kyõ thuaät Maùy tính – Tröôøng Ñaïi hoïc Coâng ngheä Thoâng tin Khaùi nieäm cô baûn. Heä thoáng maùy tính thöïc thi nhieàu chöông trình. khaùc nhau. – Batch system: jobs. – Time-shared systems: user programs, tasks. – Job process Quaù trình (process). – moät chöông trình ñang thöïc thi Moät quaù trình bao goàm. – Text section (program code), data section (chöùa global. variables). – Hoaït ñoäng hieän thôøi: program counter (PC), process. status word (PSW), stack pointer (SP), memory management. registers. Khoa Kyõ thuaät Maùy tính – Tröôøng Ñaïi hoïc Coâng ngheä Thoâng tin böôùc naïp chöông trình vaøo . Töø chöông trình ñeán quaù trình. Duøng load module ñeå bieåu dieãn chöông trình thöïc. thi ñöôïc. Layout luaän lyù cuûa process image. Executable binary file Process image in. (load module) main memory start address. program program. code code data data. stack. Khôûi taïo quaù trình. Caùc böôùc heä ñieàu haønh khôûi taïo quaù trình. – Caáp phaùt moät ñònh danh duy nhaát (process number hay. process identifier, pid) cho quaù trình. – Caáp phaùt khoâng gian nhôù ñeå naïp quaù trình. – Khôûi taïo khoái döõ lieäu Process Control Block (PCB) cho quaù. trình. PCB laø nôi heä ñieàu haønh löu caùc thoâng tin veà. quaù trình. – Thieát laäp caùc moái lieân heä caàn thieát (vd: saép PCB. vaøo haøng ñôïi ñònh thôøi, ). Khoa Kyõ thuaät Maùy tính – Tröôøng Ñaïi hoïc Coâng ngheä Thoâng tin Caùc traïng thaùi cuûa quaù. trình. Caùc traïng thaùi cuûa quaù trình (process states):. – new: quaù trình vöøa ñöôïc taïo. – ready: quaù trình ñaõ coù ñuû taøi nguyeân, chæ coøn caàn. CPU. – running: caùc leänh cuûa quaù trình ñang ñöôïc thöïc thi. – waiting: hay laø blocked, quaù trình ñôïi I/O hoaøn taát, tín. hieäu – terminated: quaù trình ñaõ keát thuùc Khoa Kyõ thuaät Maùy tính – Tröôøng Ñaïi hoïc Coâng ngheä Thoâng tin Caùc traïng thaùi cuûa quaù. trình (tt). Chuyeån ñoåi giöõa caùc traïng thaùi cuûa quaù. trình terminated. new terminated. new admit dispatch exit. ready. ready running. running. interrupt. I/O or event I/O or. completion event wait. waiting. waiting. Khoa Kyõ thuaät Maùy tính – Tröôøng Ñaïi hoïc Coâng ngheä Thoâng tin Ví duï veà traïng thaùi quaù trình. Chuoãi traïng thaùi./* */.int main(int argc, char** argv) cuûa quaù trình test.{. printf(“Hello world\n");. nhö sau (tröôøng hôïp. exit(0); toát nhaát):.}. – dòch chöông trình trong – – –o test.

• Hệ điều hành
• process ; tiến trình
• Lecture Software process improvement
• Bài giảng Cải tiến quy trình phần mềm
• Software process improvement
• Process modeling technique
• Critical software process issues
• Process framework
• Software process assessments
• Software process assessment methodologies
• Key process areas
• Process patterns
• Task process patterns
• Stage process patterns
• Software process
• Software problems
• Process management
• Process models
• Software engineering
• Process standardization
• Technology innovations
• Process thinking principles
• Verify selected work products
• Organizational process focus
• Establish process action plans
• Personal software process (PSP)
• Organizational process improvement
• Software project planning
• Implementing personal software process
• Time management strategies
• Team software process (TSP)
• The TSP teamworking process
• Rebalancing team workload
• Process metrics
• Process quality metrics
• Defect arrival rate
• Engineering judgment
• Quality assurance process
• Software engineering analysis
• Business processes
• Capability maturity model
• Organization process definition
• Software product engineering
• The managed level
• Software quality management
• Quantitative process management
• Defect prevention
• Technology change management
• Process change management
• The maturity levels
• Organizational process definition
• Integrated project management
• Organizational process performance
• Quantitative project management
• CMMI continuous representation
• CMMI model components
• Process area categories
• Synchronous paradigm
• Software engineering institute (SEI)
• TSP teambuilding principles
• Team operational processes
• TSP BOK competence areas
• TSP prerequisite knowledge
• SPI spiral model
• Management commitment influencers
• The IDEAL model
• Software process benchmarks
• Macroeconomic benchmarks
• Corporate information technology benchmarks