Re: How can I get the maximum shared memory segment size in program?
Re: How can I get the maximum shared memory segment size in program?
- Subject: Re: How can I get the maximum shared memory segment size in program?
- From: "Justin C. Walker" <email@hidden>
- Date: Fri, 28 Dec 2007 21:47:38 -0800
On Dec 28, 2007, at 21:34 , bady yu wrote:
I can use "sysctl kern.sysv.shmmax" or "ipcs -M" to get the integer
(4194304). But they are both command line tools. It is not
convenient to call it inside the problem.
I also have tried to use the sysctlbyname system call: sysctlbyname
("kern.sysv.shmmax", &shmmax, &len, NULL, NULL). Although this call
return 0, the shmmax variable does not hold the correct value.
By the way, my system is Leopard.
Can anybody tell me an appropriate way? Thank you in advance!
'sysctl(1)' just uses 'sysctl(2)'. Check the man page ("man 2
sysctl") and the source for 'sysctl(1)' available on Apple's Darwin
website (the 'system_cmds-431' project, for 10.5).
Justin
--
Justin C. Walker, Curmudgeon-At-Large
Institute for the Absorption of Federal Funds
--------
Men are from Earth.
Women are from Earth.
Deal with it.
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