src/base/time.cc

   1 /*
   2  * Copyright (c) 2003-2005 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Nathan Binkert
  29  */
  30
  31 #include <iostream>
  32 #include <sstream>
  33
  34 #include "base/time.hh"
  35 #include "config/use_posix_clock.hh"
  36
  37 using namespace std;
  38
  39 void
  40 Time::_set(bool monotonic)
  41 {
  42 #if USE_POSIX_CLOCK
  43     ::clock_gettime(monotonic ? CLOCK_MONOTONIC : CLOCK_REALTIME, &_time);
  44 #else
  45     timeval tv;
  46     ::gettimeofday(&tv, NULL);
  47     operator=(tv);
  48 #endif
  49 }
  50
  51 string
  52 Time::date(const string &format) const
  53 {
  54     time_t sec = this->sec();
  55     char buf[256];
  56
  57     if (format.empty()) {
  58 #ifdef __SUNPRO_CC
  59         ctime_r(&sec, buf, sizeof(buf));
  60 #else
  61         ctime_r(&sec, buf);
  62 #endif
  63         buf[24] = '\0';
  64         return buf;
  65     }
  66
  67     struct tm *tm = localtime(&sec);
  68     strftime(buf, sizeof(buf), format.c_str(), tm);
  69     return buf;
  70 }
  71
  72 string
  73 Time::time() const
  74 {
  75     double time = double(*this);
  76     double secs = fmod(time, 60.0);
  77     double all_mins = floor(time / 60.0);
  78     double mins = fmod(all_mins, 60.0);
  79     double hours = floor(all_mins / 60.0);
  80
  81     stringstream str;
  82
  83     if (hours > 0.0) {
  84         if (hours < 10.0)
  85             str << '0';
  86         str << hours << ':';
  87     }
  88
  89     if (mins > 0.0) {
  90         if (mins < 10.0)
  91             str << '0';
  92         str << mins << ':';
  93     }
  94
  95     if (secs < 10.0 && !str.str().empty())
  96         str << '0';
  97     str << secs;
  98
  99     return str.str();
 100 }
 101
 102 void
 103 sleep(const Time &time)
 104 {
 105     timespec ts = time;
 106
 107 #if USE_POSIX_CLOCK
 108     clock_nanosleep(CLOCK_MONOTONIC, 0, &ts, NULL);
 109 #else
 110     nanosleep(&ts, NULL);
 111 #endif
 112 }