Date: Tue, 10 Aug 1999 13:57:16 -0600 From: Charles Randall <crandall@matchlogic.com> To: Charlie ROOT <root@sani-c.vrn.ru>, freebsd-questions@FreeBSD.ORG Subject: RE: System hang when mmap() large files Message-ID: <64003B21ECCAD11185C500805F31EC0303786B0B@houston.matchlogic.com>
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From: Charles Randall [mailto:crandall@matchlogic.com] >Are you running the machine out of swap? Looks like you >mmap 10 new MB on each iteration. What happens if you munmap() >the region before the close()? I didn't phrase that very well. Is this what you intended or were you trying to point out a problem with FreeBSD's mmap()? Charles --- mmap.c.orig Tue Aug 10 13:54:40 1999 +++ mmap.c Tue Aug 10 13:55:13 1999 @@ -1,3 +1,5 @@ +#include <stdio.h> +#include <stdlib.h> #include <sys/types.h> #include <sys/mman.h> #include <unistd.h> @@ -29,7 +31,11 @@ printf("mmap error %ld",errno); exit(1); } - close(fd); memset(addr,'x',len); + if ( munmap(addr, len) != 0 ) { + fprintf(stderr, "munmap failed\n"); + exit(EXIT_FAILURE); + } + close(fd); } } To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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