Showing posts from October, 2008
EmbeddedSystems
October 07, 2008
Virtual Sockets and Remote Procedure Call (RPC)
October 07, 2008
Virtual Sockets Tasks or section of Tasks can communicate with another task or section of task The tasks may send or r…
EmbeddedSystems
October 07, 2008
Pipes (IPC)
October 07, 2008
Pipes are similar like message queues A pipe can be opened or closed similar like a fopen() and fclose() of a C Program…
EmbeddedSystems
October 07, 2008
Mailboxes (IPC)
October 07, 2008
Mailboxes A Meassage mailbox is an IPC message Block that can be used only by a single destined Task The source is the …
EmbeddedSystems
October 06, 2008
Elimination of Shared Data Problem or Problems with Semaphores
October 06, 2008
Elimination of Shared Data Problems or Problems with Semaphores The use of semaphores does not eliminate the shared dat…
EmbeddedSystems
October 06, 2008
Semaphores
October 06, 2008
In the above Diagram, The Task A Requesting for taking semaphore with the Kernel or Operating System The kernel acknowl…
EmbeddedSystems
October 06, 2008
Shared data Problems and its solutions
October 06, 2008
Assume that several ISRs or tasks share a variable. If there is a variable currently running under a task and there is …
EmbeddedSystems
October 06, 2008
Message Queues (IPC)
October 06, 2008
Message Queues Either one task or group of tasks can use the queue Usually queue is circular. elements are accessed by …
EmbeddedSystems
October 06, 2008
Signals
October 06, 2008
Signals Signal is a short message sent from a process for enabling inter process communication Signal is usually a one …
EmbeddedSystems
October 06, 2008
Inter Process Communication (IPC)
October 06, 2008
Interprocess Communication (IPC) A process (task or ISR) generates an input information by setting or resetting a flag …
