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
|
/*
** ClanLib SDK
** Copyright (c) 1997-2005 The ClanLib Team
**
** This software is provided 'as-is', without any express or implied
** warranty. In no event will the authors be held liable for any damages
** arising from the use of this software.
**
** Permission is granted to anyone to use this software for any purpose,
** including commercial applications, and to alter it and redistribute it
** freely, subject to the following restrictions:
**
** 1. The origin of this software must not be misrepresented; you must not
** claim that you wrote the original software. If you use this software
** in a product, an acknowledgment in the product documentation would be
** appreciated but is not required.
** 2. Altered source versions must be plainly marked as such, and must not be
** misrepresented as being the original software.
** 3. This notice may not be removed or altered from any source distribution.
**
** Note: Some of the libraries ClanLib may link to may have additional
** requirements or restrictions.
**
** File Author(s):
**
** Magnus Norddahl
** (if your name is missing here, please add it)
*/
//! clanCore="System"
//! header=core.h
#ifndef header_system
#define header_system
#ifdef CL_API_DLL
#ifdef CL_CORE_EXPORT
#define CL_API_CORE __declspec(dllexport)
#else
#define CL_API_CORE __declspec(dllimport)
#endif
#else
#define CL_API_CORE
#endif
#if _MSC_VER > 1000
#pragma once
#endif
#include <string>
class CL_EventListener;
class CL_Signal_v0;
//: Generic functions that didn't fit in other places.
//- !group=Core/System!
//- !header=core.h!
class CL_API_CORE CL_System
{
//! Attributes:
public:
//: Get the current time (since system boot), in milliseconds, including effects of suspend_time()
static unsigned int get_time();
//: Returns true if MMX technology is available on this CPU.
static bool detect_mmx();
//: Returns true if 3DNow! technology is available on this CPU.
static bool detect_3dnow();
//: Returns true if extended 3DNow! is present on this CPU.
static bool detect_ext_3dnow();
//: Returns the amount of cpus and -1 if it wasn't possible to detect
static int get_num_cores();
//! Operations:
public:
//: Checks for system events, updates input and other stuff.
static void keep_alive();
//: Checks for system events (pump the CL_KeepAlive objects).
//- <p>Return when 'millis' has elapsed.</p>
static void keep_alive(int millis);
//: Checks for system events (pump the CL_KeepAlive objects).
//- <p>Return when one of the events trigger, or when timeout has elapsed.</p>
static bool keep_alive(CL_EventListener &events, int timeout = -1);
//: Sleep for 'millis' milliseconds.
static void sleep(int millis);
//: Suspend the time.
//- <p>get_time() will continue to return the same value until resume_time() is called.</p>
static void suspend_time();
//: Resumes the time.
//- <p>get_time() will return the current time again.</p>
static void resume_time();
//: Returns the full dirname of the executable that started this
//: process (aka argv[0])
//- <p>This is necessary since when programms are started from
//- the PATH there is no clean and simple way to figure out
//- the location of the data files, thus information is read
//- from <tt>/proc/self/exe</tt> under GNU/Linux and from
//- GetModuleFileName() on Win32.</p>
//return: full dirname of the executable, trailing slash is included
static std::string get_exe_path();
//! Implementation:
private:
//Starting sys_time() of the least recently started but still active suspend
static unsigned int susp_start;
//Number of active suspends
static unsigned int susp_cnt;
//Time taken up by suspends that occurred before
static unsigned int susp_accum;
//Done by platform-specific stuff, returns the cur time without dealing with any of this suspend/resume stuff
static unsigned int sys_time();
};
#endif
|
