Ipc in linux

Inter- Process Communication ,[object Object],[object Object],[object Object],[object Object],[object Object]

Pipes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

System calls for using a pipe ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

‘ ls | more’ example ,[object Object],[object Object],[object Object],[object Object]

Wrapper functions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Wrapper functions ,[object Object]

Pipe Data Structures ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Creating a pipe ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Destroying a pipe ,[object Object],[object Object],[object Object],[object Object]

Reading from a pipe ,[object Object],[object Object]

Reading from a pipe ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Writing into a pipe ,[object Object],[object Object],[object Object]

Writing into a pipe ,[object Object],[object Object],[object Object],[object Object]

Writing into a pipe ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

FIFOs ,[object Object],[object Object],[object Object]

Fifo_open( ) ,[object Object],[object Object]

System V IPC ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Using an IPC resource ,[object Object],[object Object],[object Object]

Using an IPC resource ,[object Object],[object Object],[object Object],[object Object]

Using an IPC resource ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

IPC semaphores ,[object Object],[object Object],[object Object],[object Object],[object Object]

IPC semaphores ,[object Object],[object Object],[object Object]

IPC semaphore data structures ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

IPC semaphore data structures ,[object Object],[object Object],[object Object],[object Object]

Undoable semaphore operations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

IPC semaphore data structures ,[object Object]

IPC Messages ,[object Object],[object Object],[object Object]

IPC message queue data structures

Sending and Receiving Messages ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

IPC Shared Memory ,[object Object],[object Object],[object Object],[object Object],[object Object]

IPC shared memory data structures

IPC Shared Memory Data Structures

Demand paging for IPC shared memory segments ,[object Object],[object Object],[object Object]

Swapping out pages of IPC shared memory segments ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

LINUX SCHEDULING (version 2.6.x)

[object Object],[object Object],[object Object]

CPU and I/O-bound Threads ,[object Object],[object Object],[object Object]

Linux Kernel 2.6 ,[object Object]

Linux Scheduling Goals ,[object Object],[object Object],[object Object],[object Object]

POLICY ,[object Object],[object Object]

Linux Policy ,[object Object],[object Object],[object Object]

There are two key data structures in the Linux 2.6.8.1 scheduler that allow for it to perform its duties in O(1) time, and its design revolves around them – runqueues and priority arrays.

RUNQUEUE ,[object Object],[object Object],[object Object]

RUNQUEUE DATASTRUCTURE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

PRIORITY ARRAY ,[object Object],[object Object],[object Object],[object Object],[object Object]

Priority Array Datastructure ,[object Object],[object Object],[object Object],[object Object]

Priorities ,[object Object],[object Object],[object Object]

Priorities ,[object Object],[object Object],[object Object],[object Object]

I/O-bound vs. CPU-bound Heuristics ,[object Object],[object Object],[object Object]

Calculating dynamic priority ,[object Object],[object Object],[object Object],[object Object]

Calculating Timeslice ,[object Object],[object Object]

Reinsertion of interactive task ,[object Object]

Fairness when forking new tasks ,[object Object],[object Object]

Interactivity Credits ,[object Object],[object Object],[object Object],[object Object],[object Object]

Wait queue ,[object Object],[object Object]

Going to Sleep ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Interruptible & Uninterruptible states ,[object Object],[object Object]

Main Scheduling Function ,[object Object],[object Object],[object Object]

Ipc in linux

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Ipc in linux