[lkml]   [2002]   [Oct]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Writable global section?
Richard B. Johnson wrote:
> I would like to be able to write to that variable and have it seen
> by other tasks, since shared memory is shared memory. It's a shame
> to mmap a shared library upon startup and then have to mmap some
> additional shared memory for some inter-process communication.

There are only two ways to share memory between processes:
- SYSV shared memory
- using clone() to share the VM.

Shared libraries != shared memory. Each mapping of a shared library is
copy-on-write. The purpose of shared libraries is to save memory, not
for IPC.

Brian Gerst

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:29    [W:0.046 / U:2.100 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site