boost::posix_time::time_duration
to_time_duration(boost::chrono::duration<Clock, Duration> const& from)
{
typedef boost::chrono::nanoseconds duration_type;
typedef duration_type::rep rep_type;
rep_type d = boost::chrono::duration_cast<duration_type>(
from.count()).count();
rep_type sec = d / 1000000000;
rep_type nsec = d % 1000000000;
return boost::posix_time::seconds(static_cast<long>(sec)) +
#ifdef BOOST_DATE_TIME_HAS_NANOSECONDS
boost::posix_time::nanoseconds(nsec);
#else
boost::posix_time::microseconds((nsec+500)/1000);
#endif
}
int main(int argc, char* argv[])
{
if (argc != 3) return 1;
BOOST_ASSERT(sizeof(int) == 4);
const size_t num_threads = 4;
const int max_loop = static_cast<int>(1e6);
const int step = max_loop / num_threads;
const char* SALT = argv[1];
const char* PW = argv[2];
MD5_HASH reference;
const boost::chrono::system_clock::time_point start_time = boost::chrono::system_clock::now();
tbb::task_scheduler_init init(num_threads);
char buf[9];
buf[8] = '\0';
for (int i = 0; i < MD5_DIGEST_LENGTH / 4; ++i) {
buf[0] = PW[i * 8 + 6];
buf[1] = PW[i * 8 + 7];
buf[2] = PW[i * 8 + 4];
buf[3] = PW[i * 8 + 5];
buf[4] = PW[i * 8 + 2];
buf[5] = PW[i * 8 + 3];
buf[6] = PW[i * 8 + 0];
buf[7] = PW[i * 8 + 1];
char* endptr;
reference.hash32[i] = std::strtol(buf, &endptr, 16);
}
const size_t size = strlen(SALT) + 1;
tbb::parallel_for(0, max_loop, step, [&](const size_t begin) {
MD5_HASH hash;
MD5_CTX ctx;
char *origin = new char[size + 6 + 1];
sprintf_s(origin, size + 6 + 1, "%s$", SALT);
const size_t end = begin + step;
for (size_t i = begin; i != end; ++i) {
sprintf_s(origin + size, 6 + 1, "%06d", i);
MD5_Init(&ctx);
MD5_Update(&ctx, origin, size + 6);
MD5_Final(hash.hash, &ctx);
if (reference.hash32[0] == hash.hash32[0] && reference.hash32[1] == hash.hash32[1]
&& reference.hash32[2] == hash.hash32[2] && reference.hash32[3] == hash.hash32[3]) {
std::cout << boost::format("match[%1$06d]") % i << std::endl;
}
}
delete[] origin;
});
const boost::chrono::system_clock::time_point end_time = boost::chrono::system_clock::now();
const boost::chrono::duration<double> sec = end_time - start_time;
std::cout << "elapsed time:" << sec.count() << "s" << std::endl;
return 0;
}
