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: Terry Lambert <email@hidden>
- Date: Sun, 30 Dec 2007 12:38:53 -0800
You did not provie the types of len or shmmax, nor whether or not len
contains sizeof(shmmax), nor whether you are calling this from a 32 or
64 bit program. But I suspect you are passing the wrong type and size
in to the sysctlbyname() call.
-- Terry
On Dec 28, 2007, at 9:34 PM, bady yu <email@hidden> 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!
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