Re: question re. usage of "static" within static member functions of
On Sep 7, 7:24 am, "Chris M. Thomasson" <n...@spam.invalid> wrote:
"ssb" <s.sharm...@gmail.com> wrote in message
During a code review, I found the following lines of code:
The "instance" method was implemented as follows:
static Data* model = new Data();
I have never come across a situation where a pointer was set
to static in such a case. Is this valid?
It's a singleton.
And to answer the question, it's perfectly valid. A pointer is
an object, just like any other variable, and obeys the same
rules as other variables.
What are the potential pitfalls in such programming practices?
The storage that `model' points to will never be destroyed,
also it's not thread-safe.
Not being destroyed is presumably the reason the code is written
this way. Most of the time, you don't want a singleton to be
destructed. In other word, it's a feature designed to avoid
pitfalls. As for thread-safety, it depends on the
implementation, it is thread safe---modulo bugs---in g++. (But
you're probably right for most implementations.)
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