Writing a Simple Linux Kernel Module

Re:Writing a Simple Linux Kernel Module by johncolanduoni on Thursday November 30, 2017 @04:25PM (#15819677)

If you’re writing a kernel, you’ll almost certainly be using “-nostdlib” (or your compiler’s equivalent) so unique_ptr, etc. won’t be there. You could however write your own unique_ptr that allocates via whatever allocator you write for your kernel. See [1] for a decent overview of what using C++ in a kernel entails.

[1]: http://wiki.osdev.org/C%2B%2B

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Re:Writing a Simple Linux Kernel Module by throwaway613834 on Friday December 01, 2017 @01:16AM (#15822284)

> If you’re writing a kernel, you’ll almost certainly be using “-nostdlib” (or your compiler’s equivalent) so unique_ptr, etc. won’t be there.

Huh? unique_ptr has a customizable Deleter though; you should be able to provide a custom one so it doesn't call delete.

And doesn't a kernel implement a kmalloc() or something anyway? You would just write your own operator new and have it do what your kernel needs, and the rest of the standard library would just work with it.

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Re:Writing a Simple Linux Kernel Module by johncolanduoni on Friday December 01, 2017 @12:18PM (#15825334)

True, but the "rest of the standard library" is somewhat harder to port and last time I played with it (admittedly some years ago) no compilers were good at letting you pick and choose.

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