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Synchronization
In communication among processes messages passed may be blocking or nonblocking - also called as synchronous and asynchronous.
Blocking send : The sending process is blocked unless the message is received.
Nonblocking send: The sending process sends the message and resumes operation.
Blocking receive: The receiver blocks unless a message is available.
Nonblocking receive: The receiver retrieves either a suitable message or a null.
Virtual file systems The file-system execution having of three major layers. The first layer is the file-system interface, based on the open, read, write and close calls and fi
Virtual File System serves two important functions. 1. It divides file-system-generic operations from their execution by defining a clean VFS interface. 2. The VFS is based
Indexed allocation Indexed allocation bringing all the pointers together into one location: the index block. Every file has its own index block, which is an array of disk-block
Symmetric multiprocessing To get maximum reliability and efficiency a mode of function called as symmetric multiprocessing is used. In essence, with SMP any program or threads
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how is it possible
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what is semantics of system call execution?
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