What is an Operating System?
... In 1998 this was the essence of a suit filed by the United State Department of Justice against Microsoft ...
... In 1998 this was the essence of a suit filed by the United State Department of Justice against Microsoft ...
ch2
... Accounting - To keep track of which users use how much and what kinds of computer resources Protection and security - The owners of information stored in a multiuser or networked computer system may want to control use of that information, concurrent processes should not interfere with each othe ...
... Accounting - To keep track of which users use how much and what kinds of computer resources Protection and security - The owners of information stored in a multiuser or networked computer system may want to control use of that information, concurrent processes should not interfere with each othe ...
Operating System Concepts
... slow performance Unlimited threads could exhaust system resources, such as CPU time or memory Solution: Thread Pools • Create a number of threads at process startup and place them in a pool where they await work Advantages: Usually slightly faster to service a request with an existing thread than cr ...
... slow performance Unlimited threads could exhaust system resources, such as CPU time or memory Solution: Thread Pools • Create a number of threads at process startup and place them in a pool where they await work Advantages: Usually slightly faster to service a request with an existing thread than cr ...
OS Lab Manual
... VMware Player is for users without a license to use VMware Workstation or VMware Fusion. VMware offers this software as a freeware product for personal use. While initially not able to create virtual machines, this limitation was removed in version 3.0.1. VMware Player is a freeware virtualization s ...
... VMware Player is for users without a license to use VMware Workstation or VMware Fusion. VMware offers this software as a freeware product for personal use. While initially not able to create virtual machines, this limitation was removed in version 3.0.1. VMware Player is a freeware virtualization s ...
ch3
... struct task_struct *parent; /* this process’s parent */ struct list_head children; /* this process’s children */ struct files_struct *files; /* list of open files */ struct mm_struct *mm; /* address space of this process */ ...
... struct task_struct *parent; /* this process’s parent */ struct list_head children; /* this process’s children */ struct files_struct *files; /* list of open files */ struct mm_struct *mm; /* address space of this process */ ...
ch3
... struct task_struct *parent; /* this process’s parent */ struct list_head children; /* this process’s children */ struct files_struct *files; /* list of open files */ struct mm_struct *mm; /* address space of this process */ ...
... struct task_struct *parent; /* this process’s parent */ struct list_head children; /* this process’s children */ struct files_struct *files; /* list of open files */ struct mm_struct *mm; /* address space of this process */ ...
Chapter 3: Processes
... struct task_struct *parent; /* this process’s parent */ struct list_head children; /* this process’s children */ struct files_struct *files; /* list of open files */ struct mm_struct *mm; /* address space of this process */ ...
... struct task_struct *parent; /* this process’s parent */ struct list_head children; /* this process’s children */ struct files_struct *files; /* list of open files */ struct mm_struct *mm; /* address space of this process */ ...
ppt
... struct task_struct *parent; /* this process’s parent */ struct list_head children; /* this process’s children */ struct files_struct *files; /* list of open files */ struct mm_struct *mm; /* address space of this process */ ...
... struct task_struct *parent; /* this process’s parent */ struct list_head children; /* this process’s children */ struct files_struct *files; /* list of open files */ struct mm_struct *mm; /* address space of this process */ ...
Quick UNIX Tutorial
... Process & job control commands • A process may be in the foreground, in the background, or be suspended. In general the shell does not return the UNIX prompt until the current process has finished executing. • To run a program in the background, append a & at the end of the command prog1 & ...
... Process & job control commands • A process may be in the foreground, in the background, or be suspended. In general the shell does not return the UNIX prompt until the current process has finished executing. • To run a program in the background, append a & at the end of the command prog1 & ...
Processes
... struct task_struct *parent; /* this process’s parent */ struct list_head children; /* this process’s children */ struct files_struct *files; /* list of open files */ struct mm_struct *mm; /* address space of this process */ ...
... struct task_struct *parent; /* this process’s parent */ struct list_head children; /* this process’s children */ struct files_struct *files; /* list of open files */ struct mm_struct *mm; /* address space of this process */ ...
File Management - Cal Poly computer science
... amounts of information must be stored on a permanent basis in the computer system convenient access to stored information is needed by the user files provide a convenient mechanism for storing closely related information items the file system helps with the organization and management of files ...
... amounts of information must be stored on a permanent basis in the computer system convenient access to stored information is needed by the user files provide a convenient mechanism for storing closely related information items the file system helps with the organization and management of files ...
Threads
... Usually slightly faster to service a request with an existing thread than create a new thread ...
... Usually slightly faster to service a request with an existing thread than create a new thread ...
Processes
... CPU utilization by switching between processes more frequent switching so that users can interact with the program necessary for time-sharing system ...
... CPU utilization by switching between processes more frequent switching so that users can interact with the program necessary for time-sharing system ...
Chapter 4: Threads
... To discuss the APIs for the Pthreads, Windows, and Java thread libraries To explore several strategies that provide implicit threading To examine issues related to multithreaded programming To cover operating system support for threads in Windows and Linux Operating System Concepts – 9th Edi ...
... To discuss the APIs for the Pthreads, Windows, and Java thread libraries To explore several strategies that provide implicit threading To examine issues related to multithreaded programming To cover operating system support for threads in Windows and Linux Operating System Concepts – 9th Edi ...
Processes - Service web
... Represented by the C structure task_struct pid t pid; /* process identifier */ long state; /* state of the process */ unsigned int time slice /* scheduling information */ struct task struct *parent; /* this process’s parent */ struct list head children; /* this process’s children */ struct files str ...
... Represented by the C structure task_struct pid t pid; /* process identifier */ long state; /* state of the process */ unsigned int time slice /* scheduling information */ struct task struct *parent; /* this process’s parent */ struct list head children; /* this process’s children */ struct files str ...
Pilot: An Operating System for a Personal Computer
... represent the media on which files are stored (e.g., magnetic disks). Higher level software is expected to superimpose further structure on files and volumes as necessary (e.g., an executable subsystem on a file, or a detachable directory subtree on a removable volume). The emphasis at the Pilot lev ...
... represent the media on which files are stored (e.g., magnetic disks). Higher level software is expected to superimpose further structure on files and volumes as necessary (e.g., an executable subsystem on a file, or a detachable directory subtree on a removable volume). The emphasis at the Pilot lev ...
Module 4: Processes
... When CPU switches to another process, the system must save the state of the old process and load the saved state for the new process via a context switch ...
... When CPU switches to another process, the system must save the state of the old process and load the saved state for the new process via a context switch ...
Deadlocks
... Requesti = request vector for process Pi. If Requesti [j] = k then process Pi wants k instances of resource type Rj 1. If Requesti Needi go to step 2. Otherwise, raise error condition, since process has exceeded its maximum claim 2. If Requesti Available, go to step 3. Otherwise Pi must wait, si ...
... Requesti = request vector for process Pi. If Requesti [j] = k then process Pi wants k instances of resource type Rj 1. If Requesti Needi go to step 2. Otherwise, raise error condition, since process has exceeded its maximum claim 2. If Requesti Available, go to step 3. Otherwise Pi must wait, si ...
Threads
... • The user-level thread package sees a “virtual” processor(s) – it schedules user-level threads on these virtual processors – each “virtual” processor is implemented by a kernel thread • The big picture: – Create as many kernel threads as there are processors – Create as many user-level threads as t ...
... • The user-level thread package sees a “virtual” processor(s) – it schedules user-level threads on these virtual processors – each “virtual” processor is implemented by a kernel thread • The big picture: – Create as many kernel threads as there are processors – Create as many user-level threads as t ...
user-level threads
... • The user-level thread package sees a “virtual” processor(s) – it schedules user-level threads on these virtual processors – each “virtual” processor is implemented by a kernel thread • The big picture: – Create as many kernel threads as there are processors – Create as many user-level threads as t ...
... • The user-level thread package sees a “virtual” processor(s) – it schedules user-level threads on these virtual processors – each “virtual” processor is implemented by a kernel thread • The big picture: – Create as many kernel threads as there are processors – Create as many user-level threads as t ...
CPU Scheduling Algorithms 1 time on the ready
... Assume number of process happening with the occurrence time zero. Consider CPUbound process and many I/O-bound processes. As the processes flow around the system comprise two types of processes, first is CPU bound and second is I/O bound. When CPU limits process are schedules on the processor then I ...
... Assume number of process happening with the occurrence time zero. Consider CPUbound process and many I/O-bound processes. As the processes flow around the system comprise two types of processes, first is CPU bound and second is I/O bound. When CPU limits process are schedules on the processor then I ...
What is an Operating System?
... The operating system is responsible for the following activities in connection with process management: Creating and deleting both user and system processes Suspending and resuming processes Providing mechanisms for process synchronization ...
... The operating system is responsible for the following activities in connection with process management: Creating and deleting both user and system processes Suspending and resuming processes Providing mechanisms for process synchronization ...