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
|
/* $Id$ */
/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file thread_win32.cpp Win32 thread implementation of Threads. */
#include "stdafx.h"
#include "thread.h"
#include "debug.h"
#include "core/alloc_func.hpp"
#include <stdlib.h>
#include <windows.h>
#include <process.h>
/**
* Win32 thread version for ThreadObject.
*/
class ThreadObject_Win32 : public ThreadObject {
private:
HANDLE thread; ///< System thread identifier.
uint id; ///< Thread identifier.
OTTDThreadFunc proc; ///< External thread procedure.
void *param; ///< Parameter for the external thread procedure.
bool self_destruct; ///< Free ourselves when done?
public:
/**
* Create a win32 thread and start it, calling proc(param).
*/
ThreadObject_Win32(OTTDThreadFunc proc, void *param, bool self_destruct) :
thread(NULL),
id(0),
proc(proc),
param(param),
self_destruct(self_destruct)
{
this->thread = (HANDLE)_beginthreadex(NULL, 0, &stThreadProc, this, CREATE_SUSPENDED, &this->id);
if (this->thread == NULL) return;
ResumeThread(this->thread);
}
/* virtual */ ~ThreadObject_Win32()
{
if (this->thread != NULL) {
CloseHandle(this->thread);
this->thread = NULL;
}
}
/* virtual */ bool Exit()
{
assert(GetCurrentThreadId() == this->id);
/* For now we terminate by throwing an error, gives much cleaner cleanup */
throw OTTDThreadExitSignal();
}
/* virtual */ void Join()
{
/* You cannot join yourself */
assert(GetCurrentThreadId() != this->id);
WaitForSingleObject(this->thread, INFINITE);
}
private:
/**
* On thread creation, this function is called, which calls the real startup
* function. This to get back into the correct instance again.
*/
static uint CALLBACK stThreadProc(void *thr)
{
((ThreadObject_Win32 *)thr)->ThreadProc();
return 0;
}
/**
* A new thread is created, and this function is called. Call the custom
* function of the creator of the thread.
*/
void ThreadProc()
{
try {
this->proc(this->param);
} catch (OTTDThreadExitSignal) {
} catch (...) {
NOT_REACHED();
}
if (self_destruct) delete this;
}
};
/* static */ bool ThreadObject::New(OTTDThreadFunc proc, void *param, ThreadObject **thread)
{
ThreadObject *to = new ThreadObject_Win32(proc, param, thread == NULL);
if (thread != NULL) *thread = to;
return true;
}
/**
* Win32 thread version of ThreadMutex.
*/
class ThreadMutex_Win32 : public ThreadMutex {
private:
CRITICAL_SECTION critical_section;
public:
ThreadMutex_Win32()
{
InitializeCriticalSection(&this->critical_section);
}
/* virtual */ ~ThreadMutex_Win32()
{
DeleteCriticalSection(&this->critical_section);
}
/* virtual */ void BeginCritical()
{
EnterCriticalSection(&this->critical_section);
}
/* virtual */ void EndCritical()
{
LeaveCriticalSection(&this->critical_section);
}
};
/* static */ ThreadMutex *ThreadMutex::New()
{
return new ThreadMutex_Win32();
}
|
