Hi,
When Farshad pointed out that the ReadFile and WriteFile API functions are
not thread-safe, I asked myself whether *any* API functions are
thread-safe. I also wondered what operations and data types can be
considered atomic and therefore thread-safe. Is a simple operation like
calling TEvent.ResetEvent thread-safe because it involves setting the value
of an unsigned integer or a Boolean? Is the function GetLastError
thread-safe, because it only reads an atomic data type? Is an assignment to
a double-precision variable thread-safe? Are all Get and Put operations on
pointers thread-safe because the data type is a 4-byte cardinal? Is calling
a property that internally sets an integer not thread-safe because a method
call might not be thread-safe?
TiA for any guidance,
EM
