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extern int runsuperfast; void die(char *mesg); main.c. Refer to runsuperfast ... extern int runsuperfast; Declarations to library functions? #include stdio.h ...
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More Directory Functions #include dirent.h Set the position of next readdir ... Write a function isdirectory that returns nonzero if path is a directory, 0 otherwise ...
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Some typical device, network, and data base rates. 11/8/09 ... Interrupt handlers are best hidden. have driver starting an I/O operation block until interrupt ...
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CS241 MP1, MP2, MP3, MP4, MP5. Each is different. Share. Textbook. Personnel ... What is thread? Why do we need threads? Difference between process and thread ...
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Programs : Importance to write correct programs. Layout of a Program Image ... Good coders handle ALL errors, not just mandatory (in the standard) ones. 10/3/09 ...
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CS241 System Programming Process Synchronization (1) Klara ... Second Round. Stop Producer before step2 and let Consumer go. What happens? Two volunteers ...
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Access peripheral device (e.g., printer) on remote host. Distributed ... Shared Channel - Private Channel. Client-Server Model/Examples. Network (e.g., LAN) ...
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Robins&Robins. Chapter 2 (2.1-2.11) Chapter 3 (3.1-3,7) Chapter 8 (8.1-8.5) Chapter 9 (9.1-9.5) ... robin scheduling. True or False: round-robin scheduling ...
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POSIX:XSI Interval Timers. Generates a signal after a time interval repeatedly periodic ... POSIX:RTS signal queuing #include signal.h ...
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What is wrong with the following code fragment in multi-threaded environment? ... Thread-Safe version (using mutex) static int count = 0; ... Standard Initializer ...
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End of MBR contains partition table ... locates active partition, reads boot ... Magic number to identify the file system type, number of blocks in the file ...
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OS modules that enable other programs to interact with a device ... Antonym: Unserialization. Restoring the object from the serialized byte sequence. Example ...
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Standard APIs for sending and receiving data across computer networks ... address is used to return the information about the client making the connection. ...
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Buffer is a memory area that stores data while they are transferred between two ... that has been damaged, or try to read from video camera which is switched off) ...
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Queuing Framework for Process Management Evaluation Lecture 20 Klara Nahrstedt CS241 Administrative Read Stallings Chapter 9 No Quizzes this week, the next quiz will ...
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Stanford University. High Performance. Networking Group. Recent Alum ... Nandita Dukkipati, Yashar Ganjali, Sundar Iyer, Isaac Keslassy, Pablo Molinero ...
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Plus UNIX Shells / Processes / Shell Scripts. 2. Remaining Course Schedule. Exam #3 is class 26 ... cshrc is a script file executed when shell is started. ...
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vacuum tubes, plug boards (no OS) Second generation 1955 ... The Operating System Zoo (1980-present) Mainframe operating systems. Server operating systems ...
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A Stack is a type of collection where data is accessed in a FILO or LIFO manner. ... LIFO = Last In First Out. Some applications of a stack: Undo functionality ...
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fork() //create a child process. exec() //executing a program ... sz = read(fd, c, 10); printf('We have opened in1, and called read(%d, c, 10).n', fd) ...
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... Remember Dining Philosophers? Dining Philosopher Challenge ... Cars in intersection. Necessary and Sufficient Conditions for Deadlock. Mutual exclusion ...
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Introduction to Memory Management Lecture 28 Lawrence Angrave/Klara Nahrstedt
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Much like in SMP4, you will be implementing a scheduler ... press Ctrl-C (for copy to clipboard), inadvertently killing a UNIX process. ...
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char *c; sem_t *semlockp; struct timespec sleeptime; Thread with Critical Section ... { enum {0,1} value; queueType queue; }; void semWaitB(binary_semaphore s) if ...
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Queuing Theory Queuing Diagram for Processes Start Ready Queue Event Queue Event Exit Time Slice CPU Steady state Poisson arrival with l constant arrival rate ...
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... Transfer Protocol sends files from one system to another under user command ( sftp' currently) ... interact using a text-based application-level protocol: ...
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Concurrent processes cannot be overlapped, only interleaved ... errno == EINVAL if semaphore doesnt exist. Semaphore Operations. int sem_trywait(sem_t *sem) ...
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Example 1: Return of Hello World. See d6-example1.c and d6-example1-soln.c ... now to begin, another for how often to generate the interrupt (timer interval) ...
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If any one of the conditions for deadlock (with reusable resources) is denied, ... Kill one deadlocked process at a time and release its resources ...
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Allows computers and other networked devices to talk to each other ... User-Agent: MyBrowser [other parameters...] [blank line here] Sample HTTP exchange ...
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Connection Setup (SOCK_STREAM) - TCP. Recall: no connection setup for ... Connection setup cont'd. Passive participant. step 1: listen (for incoming requests) ...
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Results in higher end-user-perceived availability, given ... Toward a crash-only formalism. Component frameworks force you into certain app-writing patterns ...
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class Spider : public Car. public: void accelerate() { _speed = 5 } Inheritance ... class Elevator : public Lift, public Equipment ...
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ACL format translation. acl_copy_entry, acl_copy_ext, acl_from_text, acl_to_text, acl_size ... Free space becomes divided into many small pieces ...
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