diff options
| author | Jens Axboe <jaxboe@fusionio.com> | 2010-11-16 10:09:42 +0100 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-11-16 10:09:42 +0100 |
| commit | a02056349cdea2252cd2b21643ebf025e83a29f2 (patch) | |
| tree | b7c889d6cbe8e7188d07d99a5c9da858c53a5b6c /scripts/basic/hash.c | |
| parent | 34db1d595ef6f183fbc1e42cda45a3dfa0035258 (diff) | |
| parent | e53beacd23d9cb47590da6a7a7f6d417b941a994 (diff) | |
Merge branch 'v2.6.37-rc2' into for-2.6.38/core
Diffstat (limited to 'scripts/basic/hash.c')
| -rw-r--r-- | scripts/basic/hash.c | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/scripts/basic/hash.c b/scripts/basic/hash.c deleted file mode 100644 index 2ef5d3f666b..00000000000 --- a/scripts/basic/hash.c +++ /dev/null @@ -1,64 +0,0 @@ -/* - * Copyright (C) 2008 Red Hat, Inc., Jason Baron <jbaron@redhat.com> - * - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#define DYNAMIC_DEBUG_HASH_BITS 6 - -static const char *program; - -static void usage(void) -{ - printf("Usage: %s <djb2|r5> <modname>\n", program); - exit(1); -} - -/* djb2 hashing algorithm by Dan Bernstein. From: - * http://www.cse.yorku.ca/~oz/hash.html - */ - -static unsigned int djb2_hash(char *str) -{ - unsigned long hash = 5381; - int c; - - c = *str; - while (c) { - hash = ((hash << 5) + hash) + c; - c = *++str; - } - return (unsigned int)(hash & ((1 << DYNAMIC_DEBUG_HASH_BITS) - 1)); -} - -static unsigned int r5_hash(char *str) -{ - unsigned long hash = 0; - int c; - - c = *str; - while (c) { - hash = (hash + (c << 4) + (c >> 4)) * 11; - c = *++str; - } - return (unsigned int)(hash & ((1 << DYNAMIC_DEBUG_HASH_BITS) - 1)); -} - -int main(int argc, char *argv[]) -{ - program = argv[0]; - - if (argc != 3) - usage(); - if (!strcmp(argv[1], "djb2")) - printf("%d\n", djb2_hash(argv[2])); - else if (!strcmp(argv[1], "r5")) - printf("%d\n", r5_hash(argv[2])); - else - usage(); - exit(0); -} - |
