Creating mutex pointer in c++

[kushal bhattacharya]

Hi,
Is it possible to create a mutex pointer in c++?If so ,which is the best method to do so so that i could use it as a normal mutex to pass it to like lock_guard or to condition_variable's wait.Is it really possible ?
Thanks,
Kushal

[Marcel Mueller]

On 29.04.17 09.50, kushal bhattacharya wrote:
> Hi,
> Is it possible to create a mutex pointer in c++?

What is a "mutex pointer"?


Marcel

[Jorgen Grahn]

A pointer to a mutex, surely?

Mutex* my_mutex_pointer = &my_mutex;

/Jorgen

--
// Jorgen Grahn <grahn@ Oo o. . .
\X/ snipabacken.se> O o .

[Chris M. Thomasson]

Not exactly sure what you mean. However, here is a quick example:
_____________________________
std::mutex mtx;
std::mutex* ptr = &mtx;

{
std::unique_lock<std::mutex> lock(*ptr);
}
_____________________________

[kushal bhattacharya]

I was looking for this exact stuff i found it thnks :)

[Bonita Montero]

> std::unique_lock<std::mutex> lock(*ptr);

Or with C++17's class template deduction:

std::unique_lock lock( *ptr );

[kushal bhattacharya]

hi,
Is it any differnent than the previous approach?

[Bonita Montero]

>>> std::unique_lock<std::mutex> lock(*ptr);

>> Or with C++17's class template deduction:
>> std::unique_lock lock( *ptr );

> hi,
> Is it any differnent than the previous approach?

It works only with compilers that support C++ with the class template
deduction feature. This is only a convenience-feature. The resulting
code is exactly the same.

[Chris M. Thomasson]

I agree that it is a convenience. Not sure if I totally like it or not,
but its is very convenient for sure. My skills in C++ can be old-school
from time to time. I like Alf P. Steinbach's code because it helps me
visualize newer features. :^)

Common now, try to give proper attributes wrt quoting others. Pretty Please?

;^o

[kushal bhattacharya]

exactly :-)

[kushal bhattacharya]

thanks for this approach maam :)

[Chris M. Thomasson]

Bonita is okay. She just should try to give a proper attribution for
once! Damn it, even a cut-and-paste of a name would be a first step.