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// @file time_support.h
/* Copyright 2010 10gen Inc.
*
* Licensed 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.
*/
#pragma once
#include <cstdio> // sscanf
#include <ctime>
#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/thread/xtime.hpp>
#undef assert
#define assert MONGO_assert
namespace mongo {
inline void time_t_to_Struct(time_t t, struct tm * buf , bool local = false ) {
#if defined(_WIN32)
if ( local )
localtime_s( buf , &t );
else
gmtime_s(buf, &t);
#else
if ( local )
localtime_r(&t, buf);
else
gmtime_r(&t, buf);
#endif
}
// uses ISO 8601 dates without trailing Z
// colonsOk should be false when creating filenames
inline string terseCurrentTime(bool colonsOk=true){
struct tm t;
time_t_to_Struct( time(0) , &t );
const char* fmt = (colonsOk ? "%Y-%m-%dT%H:%M:%S" : "%Y-%m-%dT%H-%M-%S");
char buf[32];
assert(strftime(buf, sizeof(buf), fmt, &t) == 19);
return buf;
}
inline boost::gregorian::date currentDate() {
boost::posix_time::ptime now = boost::posix_time::second_clock::local_time();
return now.date();
}
// parses time of day in "hh:mm" format assuming 'hh' is 00-23
inline bool toPointInTime( const string& str , boost::posix_time::ptime* timeOfDay ) {
int hh = 0;
int mm = 0;
if ( 2 != sscanf( str.c_str() , "%d:%d" , &hh , &mm ) ) {
return false;
}
// verify that time is well formed
if ( ( hh / 24 ) || ( mm / 60 ) ) {
return false;
}
boost::posix_time::ptime res( currentDate() , boost::posix_time::hours( hh ) + boost::posix_time::minutes( mm ) );
*timeOfDay = res;
return true;
}
#define MONGO_asctime _asctime_not_threadsafe_
#define asctime MONGO_asctime
#define MONGO_gmtime _gmtime_not_threadsafe_
#define gmtime MONGO_gmtime
#define MONGO_localtime _localtime_not_threadsafe_
#define localtime MONGO_localtime
#define MONGO_ctime _ctime_is_not_threadsafe_
#define ctime MONGO_ctime
#if defined(_WIN32) || defined(__sunos__)
inline void sleepsecs(int s) {
boost::xtime xt;
boost::xtime_get(&xt, boost::TIME_UTC);
xt.sec += s;
boost::thread::sleep(xt);
}
inline void sleepmillis(long long s) {
boost::xtime xt;
boost::xtime_get(&xt, boost::TIME_UTC);
xt.sec += (int)( s / 1000 );
xt.nsec += (int)(( s % 1000 ) * 1000000);
if ( xt.nsec >= 1000000000 ) {
xt.nsec -= 1000000000;
xt.sec++;
}
boost::thread::sleep(xt);
}
inline void sleepmicros(long long s) {
if ( s <= 0 )
return;
boost::xtime xt;
boost::xtime_get(&xt, boost::TIME_UTC);
xt.sec += (int)( s / 1000000 );
xt.nsec += (int)(( s % 1000000 ) * 1000);
if ( xt.nsec >= 1000000000 ) {
xt.nsec -= 1000000000;
xt.sec++;
}
boost::thread::sleep(xt);
}
#else
inline void sleepsecs(int s) {
struct timespec t;
t.tv_sec = s;
t.tv_nsec = 0;
if ( nanosleep( &t , 0 ) ){
cout << "nanosleep failed" << endl;
}
}
inline void sleepmicros(long long s) {
if ( s <= 0 )
return;
struct timespec t;
t.tv_sec = (int)(s / 1000000);
t.tv_nsec = 1000 * ( s % 1000000 );
struct timespec out;
if ( nanosleep( &t , &out ) ){
cout << "nanosleep failed" << endl;
}
}
inline void sleepmillis(long long s) {
sleepmicros( s * 1000 );
}
#endif
// note this wraps
inline int tdiff(unsigned told, unsigned tnew) {
return WrappingInt::diff(tnew, told);
}
/** curTimeMillis will overflow - use curTimeMicros64 instead if you care about that. */
inline unsigned curTimeMillis() {
boost::xtime xt;
boost::xtime_get(&xt, boost::TIME_UTC);
unsigned t = xt.nsec / 1000000;
return (xt.sec & 0xfffff) * 1000 + t;
}
/** Date_t is milliseconds since epoch */
inline Date_t jsTime() {
boost::xtime xt;
boost::xtime_get(&xt, boost::TIME_UTC);
unsigned long long t = xt.nsec / 1000000;
return ((unsigned long long) xt.sec * 1000) + t;
}
inline unsigned long long curTimeMicros64() {
boost::xtime xt;
boost::xtime_get(&xt, boost::TIME_UTC);
unsigned long long t = xt.nsec / 1000;
return (((unsigned long long) xt.sec) * 1000000) + t;
}
// measures up to 1024 seconds. or, 512 seconds with tdiff that is...
inline unsigned curTimeMicros() {
boost::xtime xt;
boost::xtime_get(&xt, boost::TIME_UTC);
unsigned t = xt.nsec / 1000;
unsigned secs = xt.sec % 1024;
return secs*1000000 + t;
}
} // namespace mongo
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