diff --git a/auto/sources b/auto/sources index 3e201cf1f..a2af30252 100644 --- a/auto/sources +++ b/auto/sources @@ -22,6 +22,7 @@ CORE_DEPS="src/core/nginx.h \ src/core/ngx_file.h \ src/core/ngx_crc.h \ src/core/ngx_crc32.h \ + src/core/ngx_murmurhash.h \ src/core/ngx_md5.h \ src/core/ngx_sha1.h \ src/core/ngx_rbtree.h \ @@ -50,6 +51,7 @@ CORE_SRCS="src/core/nginx.c \ src/core/ngx_inet.c \ src/core/ngx_file.c \ src/core/ngx_crc32.c \ + src/core/ngx_murmurhash.c \ src/core/ngx_rbtree.c \ src/core/ngx_radix_tree.c \ src/core/ngx_slab.c \ diff --git a/src/core/ngx_core.h b/src/core/ngx_core.h index 5939166af..9f1790153 100644 --- a/src/core/ngx_core.h +++ b/src/core/ngx_core.h @@ -58,6 +58,7 @@ typedef void (*ngx_connection_handler_pt)(ngx_connection_t *c); #include #include #include +#include #if (NGX_PCRE) #include #endif diff --git a/src/core/ngx_murmurhash.c b/src/core/ngx_murmurhash.c new file mode 100644 index 000000000..c31e0e035 --- /dev/null +++ b/src/core/ngx_murmurhash.c @@ -0,0 +1,50 @@ + +/* + * Copyright (C) Austin Appleby + */ + + +#include +#include + + +uint32_t +ngx_murmur_hash2(u_char *data, size_t len) +{ + uint32_t h, k; + + h = 0 ^ len; + + while (len >= 4) { + k = data[0]; + k |= data[1] << 8; + k |= data[2] << 16; + k |= data[3] << 24; + + k *= 0x5bd1e995; + k ^= k >> 24; + k *= 0x5bd1e995; + + h *= 0x5bd1e995; + h ^= k; + + data += 4; + len -= 4; + } + + switch (len) { + case 3: + h ^= data[2] << 16; + case 2: + h ^= data[1] << 8; + case 1: + h ^= data[0]; + h *= 0x5bd1e995; + } + + h ^= h >> 13; + h *= 0x5bd1e995; + h ^= h >> 15; + + return h; +} diff --git a/src/core/ngx_murmurhash.h b/src/core/ngx_murmurhash.h new file mode 100644 index 000000000..ae40779d4 --- /dev/null +++ b/src/core/ngx_murmurhash.h @@ -0,0 +1,18 @@ + +/* + * Copyright (C) Igor Sysoev + */ + + +#ifndef _NGX_MURMURHASH_H_INCLUDED_ +#define _NGX_MURMURHASH_H_INCLUDED_ + + +#include +#include + + +uint32_t ngx_murmur_hash2(u_char *data, size_t len); + + +#endif /* _NGX_CRC_H_INCLUDED_ */