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Shared variable programme structures
In this section, we talk about some more concepts related to the shared programme.
Concept of Lock
Locks are used for protected access of data in a shared variable system.
There are various types of locks:
1) Binary Locks: These locks are used globally between multiple processes.
2) Deckkers Locks: These locks are based on distributed requests, to make sure mutual exclusion without unnecessary waiting.
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Virtual channel is normally a link from one source to one destination, although multicast connections are also allowed. The other name for virtual channel is virtual circuit.
#include void subdomain(float x[ ], int istart, int ipoints) { int i; for (i = 0; i x[istart+i] = 123.456; } void sub(float x[ 10000], int npoints) {
Length This is a 16 bit field that defines the total length of the user datagram, header plus data. This 16 bit can define a total length of a 0 to 65, 535 bytes.
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