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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "qpid/sys/Time.h"
#include <cmath>
#include <ostream>
#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/thread/thread_time.hpp>
#include <windows.h>
#include <time.h>
using namespace boost::posix_time;
namespace {
// High-res timing support. This will display times since program start,
// more or less. Keep track of the start value and the conversion factor to
// seconds.
bool timeInitialized = false;
LARGE_INTEGER start_hpc;
double hpc_freq = 1.0;
double start_time;
/// Static constant to remove time skew between FILETIME and POSIX
/// time. POSIX and Win32 use different epochs (Jan. 1, 1970 v.s.
/// Jan. 1, 1601). The following constant defines the difference
/// in 100ns ticks.
const DWORDLONG FILETIME_to_timval_skew = 0x19db1ded53e8000;
}
namespace qpid {
namespace sys {
AbsTime::AbsTime(const AbsTime& t, const Duration& d) {
if (d == Duration::max()) {
timepoint = ptime(max_date_time);
}
else {
time_duration td = microseconds(d.nanosecs / 1000);
timepoint = t.timepoint + td;
}
}
AbsTime AbsTime::FarFuture() {
AbsTime ff;
ptime maxd(max_date_time);
ff.timepoint = maxd;
return ff;
}
AbsTime AbsTime::Zero() {
AbsTime time_epoch;
time_epoch.timepoint = boost::posix_time::from_time_t(0);
return time_epoch;
}
AbsTime AbsTime::epoch() {
AbsTime time_epoch;
time_epoch.timepoint = boost::posix_time::from_time_t(0);
return time_epoch;
}
AbsTime AbsTime::now() {
AbsTime time_now;
time_now.timepoint = boost::get_system_time();
return time_now;
}
Duration Duration::FromEpoch() {
time_duration d = boost::get_system_time() - boost::posix_time::from_time_t(0);
return d.total_nanoseconds();
}
Duration::Duration(const AbsTime& start, const AbsTime& finish) {
time_duration d = finish.timepoint - start.timepoint;
nanosecs = d.total_nanoseconds();
}
std::ostream& operator<<(std::ostream& o, const Duration& d) {
if (d >= TIME_SEC) return o << (double(d)/TIME_SEC) << "s";
if (d >= TIME_MSEC) return o << (double(d)/TIME_MSEC) << "ms";
if (d >= TIME_USEC) return o << (double(d)/TIME_USEC) << "us";
return o << int64_t(d) << "ns";
}
std::istream& operator>>(std::istream& i, Duration& d) {
// Don't throw, let the istream throw if it's configured to do so.
double number;
i >> number;
if (i.fail()) return i;
if (i.eof() || std::isspace(i.peek())) // No suffix
d = number*TIME_SEC;
else {
std::string suffix;
i >> suffix;
if (i.fail()) return i;
if (suffix.compare("s") == 0) d = number*TIME_SEC;
else if (suffix.compare("ms") == 0) d = number*TIME_MSEC;
else if (suffix.compare("us") == 0) d = number*TIME_USEC;
else if (suffix.compare("ns") == 0) d = number*TIME_NSEC;
else i.setstate(std::ios::failbit);
}
return i;
}
std::ostream& operator<<(std::ostream& o, const AbsTime& t) {
std::string time_string = to_simple_string(t.timepoint);
return o << time_string;
}
void sleep(int secs) {
::Sleep(secs * 1000);
}
void usleep(uint64_t usecs) {
DWORD msecs = usecs / 1000;
if (msecs == 0)
msecs = 1;
::Sleep(msecs);
}
void outputFormattedNow(std::ostream& o) {
::time_t rawtime;
::tm timeinfo;
char time_string[100];
::time( &rawtime );
#ifdef _MSC_VER
::localtime_s(&timeinfo, &rawtime);
#else
timeinfo = *(::localtime(&rawtime));
#endif
::strftime(time_string, 100,
"%Y-%m-%d %H:%M:%S",
&timeinfo);
o << time_string << " ";
}
void outputHiresNow(std::ostream& o) {
::time_t tv_sec;
::tm timeinfo;
char time_string[100];
if (!timeInitialized) {
// To start, get the current time from FILETIME which includes
// sub-second resolution. However, since FILETIME is updated a bit
// "bumpy" every 15 msec or so, future time displays will be the
// starting FILETIME plus a delta based on the high-resolution
// performance counter.
FILETIME file_time;
ULARGE_INTEGER start_usec;
::GetSystemTimeAsFileTime(&file_time); // This is in 100ns units
start_usec.LowPart = file_time.dwLowDateTime;
start_usec.HighPart = file_time.dwHighDateTime;
start_usec.QuadPart -= FILETIME_to_timval_skew;
start_usec.QuadPart /= 10; // Convert 100ns to usec
tv_sec = (time_t)(start_usec.QuadPart / (1000 * 1000));
long tv_usec = (long)(start_usec.QuadPart % (1000 * 1000));
start_time = static_cast<double>(tv_sec);
start_time += tv_usec / 1000000.0;
start_hpc.QuadPart = 0;
LARGE_INTEGER iFreq;
iFreq.QuadPart = 1;
QueryPerformanceCounter(&start_hpc);
QueryPerformanceFrequency(&iFreq);
hpc_freq = static_cast<double>(iFreq.QuadPart);
timeInitialized = true;
}
LARGE_INTEGER hpc_now;
hpc_now.QuadPart = 0;
QueryPerformanceCounter(&hpc_now);
hpc_now.QuadPart -= start_hpc.QuadPart;
if (hpc_now.QuadPart < 0)
hpc_now.QuadPart = 0;
double now = static_cast<double>(hpc_now.QuadPart);
now /= hpc_freq; // now is seconds after this
double fnow = start_time + now;
double usec, sec;
usec = modf(fnow, &sec);
tv_sec = static_cast<time_t>(sec);
#ifdef _MSC_VER
::localtime_s(&timeinfo, &tv_sec);
#else
timeinfo = *(::localtime(&tv_sec));
#endif
::strftime(time_string, 100,
"%Y-%m-%d %H:%M:%S",
&timeinfo);
// No way to set "max field width" to cleanly output the double usec so
// convert it back to integral number of usecs and print that.
unsigned long i_usec = usec * 1000 * 1000;
o << time_string << "." << std::setw(6) << std::setfill('0') << i_usec << " ";
}
}}
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