aboutsummaryrefslogtreecommitdiffhomepage
path: root/src/common/timer.cpp
blob: 4a797f751ad19bc0ef45c3fc8d85252267898aa1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.

#include <time.h>

#ifdef _WIN32
#include <Windows.h>
#include <mmsystem.h>
#include <sys/timeb.h>
#else
#include <sys/time.h>
#endif

#include "common/common.h"
#include "common/timer.h"
#include "common/string_util.h"

namespace Common
{

u32 Timer::GetTimeMs()
{
#ifdef _WIN32
    return timeGetTime();
#else
    struct timeval t;
    (void)gettimeofday(&t, nullptr);
    return ((u32)(t.tv_sec * 1000 + t.tv_usec / 1000));
#endif
}

// --------------------------------------------
// Initiate, Start, Stop, and Update the time
// --------------------------------------------

// Set initial values for the class
Timer::Timer()
    : m_LastTime(0), m_StartTime(0), m_Running(false)
{
    Update();
}

// Write the starting time
void Timer::Start()
{
    m_StartTime = GetTimeMs();
    m_Running = true;
}

// Stop the timer
void Timer::Stop()
{
    // Write the final time
    m_LastTime = GetTimeMs();
    m_Running = false;
}

// Update the last time variable
void Timer::Update()
{
    m_LastTime = GetTimeMs();
    //TODO(ector) - QPF
}

// -------------------------------------
// Get time difference and elapsed time
// -------------------------------------

// Get the number of milliseconds since the last Update()
u64 Timer::GetTimeDifference()
{
    return GetTimeMs() - m_LastTime;
}

// Add the time difference since the last Update() to the starting time.
// This is used to compensate for a paused game.
void Timer::AddTimeDifference()
{
    m_StartTime += GetTimeDifference();
}

// Get the time elapsed since the Start()
u64 Timer::GetTimeElapsed()
{
    // If we have not started yet, return 1 (because then I don't
    // have to change the FPS calculation in CoreRerecording.cpp .
    if (m_StartTime == 0) return 1;

    // Return the final timer time if the timer is stopped
    if (!m_Running) return (m_LastTime - m_StartTime);

    return (GetTimeMs() - m_StartTime);
}

// Get the formatted time elapsed since the Start()
std::string Timer::GetTimeElapsedFormatted() const
{
    // If we have not started yet, return zero
    if (m_StartTime == 0)
        return "00:00:00:000";

    // The number of milliseconds since the start.
    // Use a different value if the timer is stopped.
    u64 Milliseconds;
    if (m_Running)
        Milliseconds = GetTimeMs() - m_StartTime;
    else
        Milliseconds = m_LastTime - m_StartTime;
    // Seconds
    u32 Seconds = (u32)(Milliseconds / 1000);
    // Minutes
    u32 Minutes = Seconds / 60;
    // Hours
    u32 Hours = Minutes / 60;

    std::string TmpStr = StringFromFormat("%02i:%02i:%02i:%03i",
        Hours, Minutes % 60, Seconds % 60, Milliseconds % 1000);
    return TmpStr;
}

// Get current time
void Timer::IncreaseResolution()
{
#ifdef _WIN32
    timeBeginPeriod(1);
#endif
}

void Timer::RestoreResolution()
{
#ifdef _WIN32
    timeEndPeriod(1);
#endif
}

// Get the number of seconds since January 1 1970
u64 Timer::GetTimeSinceJan1970()
{
    time_t ltime;
    time(&ltime);
    return((u64)ltime);
}

u64 Timer::GetLocalTimeSinceJan1970()
{
    time_t sysTime, tzDiff, tzDST;
    struct tm * gmTime;

    time(&sysTime);

    // Account for DST where needed
    gmTime = localtime(&sysTime);
    if(gmTime->tm_isdst == 1)
        tzDST = 3600;
    else
        tzDST = 0;

    // Lazy way to get local time in sec
    gmTime    = gmtime(&sysTime);
    tzDiff = sysTime - mktime(gmTime);

    return (u64)(sysTime + tzDiff + tzDST);
}

// Return the current time formatted as Minutes:Seconds:Milliseconds
// in the form 00:00:000.
std::string Timer::GetTimeFormatted()
{
    time_t sysTime;
    struct tm * gmTime;
    char tmp[13];

    time(&sysTime);
    gmTime = localtime(&sysTime);

    strftime(tmp, 6, "%M:%S", gmTime);

    // Now tack on the milliseconds
#ifdef _WIN32
    struct timeb tp;
    (void)::ftime(&tp);
    return StringFromFormat("%s:%03i", tmp, tp.millitm);
#else
    struct timeval t;
    (void)gettimeofday(&t, nullptr);
    return StringFromFormat("%s:%03d", tmp, (int)(t.tv_usec / 1000));
#endif
}

// Returns a timestamp with decimals for precise time comparisons
// ----------------
double Timer::GetDoubleTime()
{
#ifdef _WIN32
    struct timeb tp;
    (void)::ftime(&tp);
#else
    struct timeval t;
    (void)gettimeofday(&t, nullptr);
#endif
    // Get continuous timestamp
    u64 TmpSeconds = Common::Timer::GetTimeSinceJan1970();

    // Remove a few years. We only really want enough seconds to make
    // sure that we are detecting actual actions, perhaps 60 seconds is
    // enough really, but I leave a year of seconds anyway, in case the
    // user's clock is incorrect or something like that.
    TmpSeconds = TmpSeconds - (38 * 365 * 24 * 60 * 60);

    // Make a smaller integer that fits in the double
    u32 Seconds = (u32)TmpSeconds;
#ifdef _WIN32
    double ms = tp.millitm / 1000.0 / 1000.0;
#else
    double ms = t.tv_usec / 1000000.0;
#endif
    double TmpTime = Seconds + ms;

    return TmpTime;
}

} // Namespace Common