Can someone explain what the Volatile keyword use used for…for someone coming from a none C/C++ background?
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Can someone explain what the Volatile keyword use used for…for someone coming from a
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Can someone explain what the Volatile keyword use used for…for someone coming from a none C/C++ background?
Thanks
If you’re not from a C/C++ background the simple answer is don’t use volatile.
What it does is pretty much implementation dependant at the machine code level. But conceptually it’s telling the complier that the value of the variable might change at any point in time. Perhaps due to the operating system, or due to another thread. So whenever the value needs to be accessed make sure to read the actual memory location and don’t try to be cute by caching it in registers or such like.
Ah! Only just notice the C# tag. In this case it’s more to do with multi-threading and locking (or not locking) than OS issues. Unless you’re doing something with unsafe code.
Re. C# specifically:
http://msdn.microsoft.com/en-us/library/x13ttww7(v=vs.71).aspx
You would hope that when writing C# you can ignore these kind of close to the metal issues and get on with developing well architected applications.