how to share memory in ubuntu using c++

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Linux

how to share memory in ubuntu using c++

Posted 26-Feb-15 6:07am

kanangandhi

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Sergey Alexandrovich Kryukov 26-Feb-15 12:34pm

What have you tried so far?
—SA

2 solutions

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Sergey Alexandrovich Kryukov · Accepted Answer · 2015-02-26T06:33:00

Solution 1

You can use POSIX shared memory objects (shm*). Please start here: http://man7.org/linux/man-pages/man7/shm_overview.7.html[^].

Good news for you: nothing of this is specific to Ubuntu, and not even exclusively to Linux. Please see also:
http://en.wikipedia.org/wiki/POSIX[^].

—SA

Posted 26-Feb-15 6:33am

Sergey Alexandrovich Kryukov

Comments

CPallini 26-Feb-15 13:13pm

5.

Sergey Alexandrovich Kryukov 26-Feb-15 15:17pm

Thank you, Carlo.
—SA

CPallini · Accepted Answer · 2015-02-26T07:21:00

Solution 2

It depends on your needs. Sergey already pointed out how to share memory between processes.
In another scenario, memory is shared between different threads of the same process and all you have to do is synchronize the access to it (see, for instance
"Mutex Variables" at POSIX Threads Programming page[^].

Posted 26-Feb-15 7:21am

CPallini

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Sergey Alexandrovich Kryukov 26-Feb-15 15:18pm

I took sharing memory between threads of the same process for granted, but it is still possible that the inquirer needs at least the mention. 5ed.
—SA