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
|
// Typically we use the same global thread pool for all RAR modules.
static ThreadPool *GlobalPool=NULL;
static uint GlobalPoolUseCount=0;
static inline bool CriticalSectionCreate(CRITSECT_HANDLE *CritSection)
{
#ifdef _WIN_ALL
InitializeCriticalSection(CritSection);
return true;
#elif defined(_UNIX)
return pthread_mutex_init(CritSection,NULL)==0;
#endif
}
static inline void CriticalSectionDelete(CRITSECT_HANDLE *CritSection)
{
#ifdef _WIN_ALL
DeleteCriticalSection(CritSection);
#elif defined(_UNIX)
pthread_mutex_destroy(CritSection);
#endif
}
static inline void CriticalSectionStart(CRITSECT_HANDLE *CritSection)
{
#ifdef _WIN_ALL
EnterCriticalSection(CritSection);
#elif defined(_UNIX)
pthread_mutex_lock(CritSection);
#endif
}
static inline void CriticalSectionEnd(CRITSECT_HANDLE *CritSection)
{
#ifdef _WIN_ALL
LeaveCriticalSection(CritSection);
#elif defined(_UNIX)
pthread_mutex_unlock(CritSection);
#endif
}
static struct GlobalPoolCreateSync
{
CRITSECT_HANDLE CritSection;
GlobalPoolCreateSync() { CriticalSectionCreate(&CritSection); }
~GlobalPoolCreateSync() { CriticalSectionDelete(&CritSection); }
} PoolCreateSync;
ThreadPool* CreateThreadPool()
{
CriticalSectionStart(&PoolCreateSync.CritSection);
if (GlobalPoolUseCount++ == 0)
GlobalPool=new ThreadPool(MaxPoolThreads);
// We use a simple thread pool, which does not allow to add tasks from
// different functions and threads in the same time. It is ok for RAR,
// but UnRAR.dll can be used in multithreaded environment. So if one of
// threads requests a copy of global pool and another copy is already
// in use, we create and return a new pool instead of existing global.
if (GlobalPoolUseCount > 1)
{
ThreadPool *Pool = new ThreadPool(MaxPoolThreads);
CriticalSectionEnd(&PoolCreateSync.CritSection);
return Pool;
}
CriticalSectionEnd(&PoolCreateSync.CritSection);
return GlobalPool;
}
void DestroyThreadPool(ThreadPool *Pool)
{
if (Pool!=NULL)
{
CriticalSectionStart(&PoolCreateSync.CritSection);
if (Pool==GlobalPool && GlobalPoolUseCount > 0 && --GlobalPoolUseCount == 0)
delete GlobalPool;
// To correctly work in multithreaded environment UnRAR.dll creates
// new pools if global pool is already in use. We delete such pools here.
if (Pool!=GlobalPool)
delete Pool;
CriticalSectionEnd(&PoolCreateSync.CritSection);
}
}
static THREAD_HANDLE ThreadCreate(NATIVE_THREAD_PTR Proc,void *Data)
{
#ifdef _UNIX
/*
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
*/
pthread_t pt;
int Code=pthread_create(&pt,NULL/*&attr*/,Proc,Data);
if (Code!=0)
{
wchar Msg[100];
swprintf(Msg,ASIZE(Msg),L"\npthread_create failed, code %d\n",Code);
ErrHandler.GeneralErrMsg(Msg);
ErrHandler.SysErrMsg();
ErrHandler.Exit(RARX_FATAL);
}
return pt;
#else
DWORD ThreadId;
HANDLE hThread=CreateThread(NULL,0x10000,Proc,Data,0,&ThreadId);
if (hThread==NULL)
{
ErrHandler.GeneralErrMsg(L"CreateThread failed");
ErrHandler.SysErrMsg();
ErrHandler.Exit(RARX_FATAL);
}
return hThread;
#endif
}
static void ThreadClose(THREAD_HANDLE hThread)
{
#ifdef _UNIX
pthread_join(hThread,NULL);
#else
CloseHandle(hThread);
#endif
}
#ifdef _WIN_ALL
static void CWaitForSingleObject(HANDLE hHandle)
{
DWORD rc=WaitForSingleObject(hHandle,INFINITE);
if (rc==WAIT_FAILED)
{
ErrHandler.GeneralErrMsg(L"\nWaitForMultipleObjects error %d, GetLastError %d",rc,GetLastError());
ErrHandler.Exit(RARX_FATAL);
}
}
#endif
#ifdef _UNIX
static void cpthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
{
int rc=pthread_cond_wait(cond,mutex);
if (rc!=0)
{
ErrHandler.GeneralErrMsg(L"\npthread_cond_wait error %d",rc);
ErrHandler.Exit(RARX_FATAL);
}
}
#endif
uint GetNumberOfCPU()
{
#ifndef RAR_SMP
return 1;
#else
#ifdef _UNIX
#ifdef _SC_NPROCESSORS_ONLN
uint Count=(uint)sysconf(_SC_NPROCESSORS_ONLN);
return Count<1 ? 1:Count;
#elif defined(_APPLE)
uint Count;
size_t Size=sizeof(Count);
return sysctlbyname("hw.ncpu",&Count,&Size,NULL,0)==0 ? Count:1;
#endif
#else // !_UNIX
DWORD_PTR ProcessMask;
DWORD_PTR SystemMask;
if (!GetProcessAffinityMask(GetCurrentProcess(),&ProcessMask,&SystemMask))
return 1;
uint Count=0;
for (DWORD_PTR Mask=1;Mask!=0;Mask<<=1)
if ((ProcessMask & Mask)!=0)
Count++;
return Count<1 ? 1:Count;
#endif
#endif // RAR_SMP
}
uint GetNumberOfThreads()
{
uint NumCPU=GetNumberOfCPU();
if (NumCPU<1)
return 1;
if (NumCPU>MaxPoolThreads)
return MaxPoolThreads;
return NumCPU;
}
|
