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* Hint MADV_SEQUENTIAL. 

* -1 -> MAP_FAILED.
This commit is contained in:
kleink 2000-03-20 18:23:26 +00:00
parent e27368706e
commit 0848e8913a
1 changed files with 6 additions and 4 deletions
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10
usr.bin/cmp/regular.c
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@ -1,4 +1,4 @@
/* $NetBSD: regular.c,v 1.7 1998/08/25 20:59:36 ross Exp $ */
/* $NetBSD: regular.c,v 1.8 2000/03/20 18:23:26 kleink Exp $ */
/*-
* Copyright (c) 1991, 1993, 1994
@ -38,7 +38,7 @@
#if 0
static char sccsid[] = "@(#)regular.c 8.3 (Berkeley) 4/2/94";
#else
__RCSID("$NetBSD: regular.c,v 1.7 1998/08/25 20:59:36 ross Exp $");
__RCSID("$NetBSD: regular.c,v 1.8 2000/03/20 18:23:26 kleink Exp $");
#endif
#endif /* not lint */
@ -79,11 +79,13 @@ c_regular(fd1, file1, skip1, len1, fd2, file2, skip2, len2)
return (c_special(fd1, file1, skip1, fd2, file2, skip2));
if ((p1 = (u_char *)mmap(NULL, (size_t)length,
PROT_READ, MAP_PRIVATE|MAP_FILE, fd1, skip1)) == (u_char *)-1)
PROT_READ, MAP_PRIVATE|MAP_FILE, fd1, skip1)) == MAP_FAILED)
err(ERR_EXIT, "%s", file1);
(void)madvise(p1, (size_t)length, MADV_SEQUENTIAL);
if ((p2 = (u_char *)mmap(NULL, (size_t)length,
PROT_READ, MAP_PRIVATE|MAP_FILE, fd2, skip2)) == (u_char *)-1)
PROT_READ, MAP_PRIVATE|MAP_FILE, fd2, skip2)) == MAP_FAILED)
err(ERR_EXIT, "%s", file2);
(void)madvise(p2, (size_t)length, MADV_SEQUENTIAL);
dfound = 0;
for (byte = line = 1; length--; ++p1, ++p2, ++byte) {