time.cc revision 7840:ed75cee5c793 
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
37using namespace std;
38
39void
40Time::_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
51string
52Time::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
72string
73Time::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
102void
103sleep(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}
113