Du kannst nicht mehr als 25 Themen auswählen
Themen müssen entweder mit einem Buchstaben oder einer Ziffer beginnen. Sie können Bindestriche („-“) enthalten und bis zu 35 Zeichen lang sein.
55 Zeilen
1.6 KiB
55 Zeilen
1.6 KiB
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file. See the AUTHORS file for names of contributors.
|
|
|
|
#include "port/port.h"
|
|
#include "util/testharness.h"
|
|
|
|
namespace leveldb {
|
|
namespace port {
|
|
|
|
class SHA1 { };
|
|
|
|
static std::string TestSHA1(const char* data, size_t len) {
|
|
char hash_val[20];
|
|
SHA1_Hash(data, len, hash_val);
|
|
char buf[41];
|
|
for (int i = 0; i < 20; i++) {
|
|
snprintf(buf + i * 2, 41 - i * 2,
|
|
"%02x",
|
|
static_cast<unsigned int>(static_cast<unsigned char>(
|
|
hash_val[i])));
|
|
}
|
|
return std::string(buf, 40);
|
|
}
|
|
|
|
TEST(SHA1, Simple) {
|
|
ASSERT_EQ("da39a3ee5e6b4b0d3255bfef95601890afd80709", TestSHA1("", 0));
|
|
ASSERT_EQ("aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d", TestSHA1("hello", 5));
|
|
std::string x(10000, 'x');
|
|
ASSERT_EQ("f8c5cde791c5056cf515881e701c8a9ecb439a75",
|
|
TestSHA1(x.data(), x.size()));
|
|
}
|
|
|
|
TEST(SHA1, Benchmark) {
|
|
std::string data(1048576 * 100, 'x');
|
|
double start = Env::Default()->NowMicros() * 1e-6;
|
|
static const int kIters = 10;
|
|
uint32_t sha1 = 0;
|
|
for (int i = 0; i < kIters; i++) {
|
|
char hash_val[20];
|
|
SHA1_Hash(data.data(), data.size(), hash_val);
|
|
sha1 |= hash_val[0];
|
|
}
|
|
double finish = Env::Default()->NowMicros() * 1e-6;
|
|
double mb = (static_cast<long long int>(data.size()) * kIters) / 1048576.0;
|
|
fprintf(stderr, "SHA1 %0.0f MB: %.3f secs; %.1f MB/s, dummy=0x%02x\n",
|
|
mb, (finish - start), mb / (finish - start), sha1);
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
int main(int argc, char** argv) {
|
|
return leveldb::test::RunAllTests();
|
|
}
|