Date: Tue, 13 Jan 1998 22:30:46 -0600 (CST) From: Joel Ray Holveck <joelh@gnu.org> To: freebsd-hackers@FreeBSD.ORG Subject: Re: sharable static arrays? Message-ID: <199801140430.WAA03884@detlev.UUCP> In-Reply-To: <19980112112455.48744@flix.net> (message from Chrisy Luke on Mon, 12 Jan 1998 11:24:55 %2B0000) References: <199801121031.EAA00243@detlev.UUCP> <19980112112455.48744@flix.net>
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>> Are static arrays shared across multiple invocations of a program? > Not intrinsicly. You'll have to either use SYS-V style shared > memory (options SYSVSHM SYSVSEM SYSVMSG in a kernel config and > shmget(2) etc) or use BSD style mapped memory (mmap(2)). Hmm... Perhaps I should have used the C term. For what I meant by 'static array', mmap (et al) would be utterly wrong. My fault. Are arrays declared const shared across multiple invocations of a program? That is, if I have an array const int foo[8192] = {...}; then will each instance of the invocation separately allocate 16k for an array that's never going to change, and exists as it is in the executable? Cheers, joelh -- Joel Ray Holveck - joelh@gnu.org - http://www.wp.com/piquan Fourth law of programming: Anything that can go wrong wi sendmail: segmentation violation - core dumped
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