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Add hash (MurmurHash3) tests.

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Add hash tests that are based on SMHasher's VerificationTest() function.
This commit is contained in:
Jason Evans 2013-12-16 22:55:41 -08:00
parent e948fa6439
commit e6b7aa4a60
3 changed files with 170 additions and 4 deletions
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6
Makefile.in
View File

@ -108,9 +108,9 @@ C_TESTLIB_SRCS := $(srcroot)test/src/math.c $(srcroot)test/src/mtx.c \
$(srcroot)test/src/thd.c
C_UTIL_INTEGRATION_SRCS := $(srcroot)src/util.c
TESTS_UNIT := $(srcroot)test/unit/bitmap.c $(srcroot)test/unit/ckh.c \
$(srcroot)test/unit/math.c $(srcroot)test/unit/mq.c \
$(srcroot)test/unit/mtx.c $(srcroot)test/unit/SFMT.c \
$(srcroot)test/unit/tsd.c
$(srcroot)test/unit/hash.c $(srcroot)test/unit/math.c \
$(srcroot)test/unit/mq.c $(srcroot)test/unit/mtx.c \
$(srcroot)test/unit/SFMT.c $(srcroot)test/unit/tsd.c
TESTS_INTEGRATION := $(srcroot)test/integration/aligned_alloc.c \
$(srcroot)test/integration/allocated.c \
$(srcroot)test/integration/mallocx.c \

1
include/jemalloc/internal/hash.h
View File

@ -310,7 +310,6 @@ hash_x64_128(const void *key, const int len, const uint32_t seed,
r_out[1] = h2;
}
/******************************************************************************/
/* API. */
JEMALLOC_INLINE void

167
test/unit/hash.c Normal file
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@ -0,0 +1,167 @@
/*
* This file is based on code that is part of SMHasher
* (https://code.google.com/p/smhasher/), and is subject to the MIT license
* (http://www.opensource.org/licenses/mit-license.php). Both email addresses
* associated with the source code's revision history belong to Austin Appleby,
* and the revision history ranges from 2010 to 2012. Therefore the copyright
* and license are here taken to be:
*
* Copyright (c) 2010-2012 Austin Appleby
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "test/jemalloc_test.h"
typedef enum {
hash_variant_x86_32,
hash_variant_x86_128,
hash_variant_x64_128
} hash_variant_t;
static size_t
hash_variant_bits(hash_variant_t variant)
{
switch (variant) {
case hash_variant_x86_32: return (32);
case hash_variant_x86_128: return (128);
case hash_variant_x64_128: return (128);
default: not_reached();
}
}
static const char *
hash_variant_string(hash_variant_t variant)
{
switch (variant) {
case hash_variant_x86_32: return ("hash_x86_32");
case hash_variant_x86_128: return ("hash_x86_128");
case hash_variant_x64_128: return ("hash_64_128");
default: not_reached();
}
}
static void
hash_variant_verify(hash_variant_t variant)
{
const size_t hashbytes = hash_variant_bits(variant) / 8;
uint8_t key[256];
uint8_t hashes[hashbytes * 256];
uint8_t final[hashbytes];
unsigned i;
uint32_t computed, expected;
memset(key, 0, sizeof(key));
memset(hashes, 0, sizeof(hashes));
memset(final, 0, sizeof(final));
/*
* Hash keys of the form {0}, {0,1}, {0,1,2}, ..., {0,1,...,255} as the
* seed.
*/
for (i = 0; i < 256; i++) {
key[i] = (uint8_t)i;
switch (variant) {
case hash_variant_x86_32: {
uint32_t out;
out = hash_x86_32(key, i, 256-i);
memcpy(&hashes[i*hashbytes], &out, hashbytes);
break;
} case hash_variant_x86_128: {
uint64_t out[2];
hash_x86_128(key, i, 256-i, out);
memcpy(&hashes[i*hashbytes], out, hashbytes);
break;
}
case hash_variant_x64_128: {
uint64_t out[2];
hash_x64_128(key, i, 256-i, out);
memcpy(&hashes[i*hashbytes], out, hashbytes);
break;
}
default: not_reached();
}
}
/* Hash the result array. */
switch (variant) {
case hash_variant_x86_32: {
uint32_t out = hash_x86_32(hashes, hashbytes*256, 0);
memcpy(final, &out, sizeof(out));
break;
} case hash_variant_x86_128: {
uint64_t out[2];
hash_x86_128(hashes, hashbytes*256, 0, out);
memcpy(final, out, sizeof(out));
break;
} case hash_variant_x64_128: {
uint64_t out[2];
hash_x64_128(hashes, hashbytes*256, 0, out);
memcpy(final, out, sizeof(out));
break;
} default: not_reached();
}
computed = (final[0] << 0) | (final[1] << 8) | (final[2] << 16) |
(final[3] << 24);
switch (variant) {
case hash_variant_x86_32: expected = 0xb0f57ee3U; break;
case hash_variant_x86_128: expected = 0xb3ece62aU; break;
case hash_variant_x64_128: expected = 0x6384ba69U; break;
default: not_reached();
}
assert_u32_eq(computed, expected,
"Hash mismatch for %s(): expected %#x but got %#x",
hash_variant_string(variant), expected, computed);
}
TEST_BEGIN(test_hash_x86_32)
{
hash_variant_verify(hash_variant_x86_32);
}
TEST_END
TEST_BEGIN(test_hash_x86_128)
{
hash_variant_verify(hash_variant_x86_128);
}
TEST_END
TEST_BEGIN(test_hash_x64_128)
{
hash_variant_verify(hash_variant_x64_128);
}
TEST_END
int
main(void)
{
return (test(
test_hash_x86_32,
test_hash_x86_128,
test_hash_x64_128));
}