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30fdf114 | 1 | /* Threads.c -- multithreading library\r |
5ec5a236 | 2 | 2017-06-26 : Igor Pavlov : Public domain */\r |
30fdf114 | 3 | \r |
c4ab09ef LG |
4 | #include "Precomp.h"\r |
5 | \r | |
6 | #ifndef UNDER_CE\r | |
30fdf114 | 7 | #include <process.h>\r |
c4ab09ef LG |
8 | #endif\r |
9 | \r | |
10 | #include "Threads.h"\r | |
30fdf114 LG |
11 | \r |
12 | static WRes GetError()\r | |
13 | {\r | |
14 | DWORD res = GetLastError();\r | |
5ec5a236 | 15 | return res ? (WRes)res : 1;\r |
30fdf114 LG |
16 | }\r |
17 | \r | |
5ec5a236 LG |
18 | static WRes HandleToWRes(HANDLE h) { return (h != NULL) ? 0 : GetError(); }\r |
19 | static WRes BOOLToWRes(BOOL v) { return v ? 0 : GetError(); }\r | |
30fdf114 | 20 | \r |
c4ab09ef | 21 | WRes HandlePtr_Close(HANDLE *p)\r |
30fdf114 | 22 | {\r |
c4ab09ef | 23 | if (*p != NULL)\r |
5ec5a236 | 24 | {\r |
c4ab09ef | 25 | if (!CloseHandle(*p))\r |
30fdf114 | 26 | return GetError();\r |
5ec5a236 LG |
27 | *p = NULL;\r |
28 | }\r | |
30fdf114 LG |
29 | return 0;\r |
30 | }\r | |
31 | \r | |
c4ab09ef | 32 | WRes Handle_WaitObject(HANDLE h) { return (WRes)WaitForSingleObject(h, INFINITE); }\r |
30fdf114 | 33 | \r |
c4ab09ef | 34 | WRes Thread_Create(CThread *p, THREAD_FUNC_TYPE func, LPVOID param)\r |
30fdf114 | 35 | {\r |
c4ab09ef LG |
36 | /* Windows Me/98/95: threadId parameter may not be NULL in _beginthreadex/CreateThread functions */\r |
37 | \r | |
38 | #ifdef UNDER_CE\r | |
39 | \r | |
40 | DWORD threadId;\r | |
41 | *p = CreateThread(0, 0, func, param, 0, &threadId);\r | |
42 | \r | |
43 | #else\r | |
44 | \r | |
45 | unsigned threadId;\r | |
46 | *p = (HANDLE)_beginthreadex(NULL, 0, func, param, 0, &threadId);\r | |
47 | \r | |
48 | #endif\r | |
49 | \r | |
50 | /* maybe we must use errno here, but probably GetLastError() is also OK. */\r | |
51 | return HandleToWRes(*p);\r | |
30fdf114 LG |
52 | }\r |
53 | \r | |
5ec5a236 | 54 | static WRes Event_Create(CEvent *p, BOOL manualReset, int signaled)\r |
30fdf114 | 55 | {\r |
c4ab09ef LG |
56 | *p = CreateEvent(NULL, manualReset, (signaled ? TRUE : FALSE), NULL);\r |
57 | return HandleToWRes(*p);\r | |
30fdf114 LG |
58 | }\r |
59 | \r | |
c4ab09ef LG |
60 | WRes Event_Set(CEvent *p) { return BOOLToWRes(SetEvent(*p)); }\r |
61 | WRes Event_Reset(CEvent *p) { return BOOLToWRes(ResetEvent(*p)); }\r | |
30fdf114 | 62 | \r |
c4ab09ef LG |
63 | WRes ManualResetEvent_Create(CManualResetEvent *p, int signaled) { return Event_Create(p, TRUE, signaled); }\r |
64 | WRes AutoResetEvent_Create(CAutoResetEvent *p, int signaled) { return Event_Create(p, FALSE, signaled); }\r | |
65 | WRes ManualResetEvent_CreateNotSignaled(CManualResetEvent *p) { return ManualResetEvent_Create(p, 0); }\r | |
66 | WRes AutoResetEvent_CreateNotSignaled(CAutoResetEvent *p) { return AutoResetEvent_Create(p, 0); }\r | |
30fdf114 | 67 | \r |
30fdf114 | 68 | \r |
c4ab09ef | 69 | WRes Semaphore_Create(CSemaphore *p, UInt32 initCount, UInt32 maxCount)\r |
30fdf114 | 70 | {\r |
c4ab09ef LG |
71 | *p = CreateSemaphore(NULL, (LONG)initCount, (LONG)maxCount, NULL);\r |
72 | return HandleToWRes(*p);\r | |
30fdf114 LG |
73 | }\r |
74 | \r | |
c4ab09ef LG |
75 | static WRes Semaphore_Release(CSemaphore *p, LONG releaseCount, LONG *previousCount)\r |
76 | { return BOOLToWRes(ReleaseSemaphore(*p, releaseCount, previousCount)); }\r | |
77 | WRes Semaphore_ReleaseN(CSemaphore *p, UInt32 num)\r | |
78 | { return Semaphore_Release(p, (LONG)num, NULL); }\r | |
79 | WRes Semaphore_Release1(CSemaphore *p) { return Semaphore_ReleaseN(p, 1); }\r | |
30fdf114 LG |
80 | \r |
81 | WRes CriticalSection_Init(CCriticalSection *p)\r | |
82 | {\r | |
83 | /* InitializeCriticalSection can raise only STATUS_NO_MEMORY exception */\r | |
c4ab09ef | 84 | #ifdef _MSC_VER\r |
30fdf114 | 85 | __try\r |
c4ab09ef | 86 | #endif\r |
30fdf114 LG |
87 | {\r |
88 | InitializeCriticalSection(p);\r | |
89 | /* InitializeCriticalSectionAndSpinCount(p, 0); */\r | |
90 | }\r | |
c4ab09ef | 91 | #ifdef _MSC_VER\r |
30fdf114 | 92 | __except (EXCEPTION_EXECUTE_HANDLER) { return 1; }\r |
c4ab09ef | 93 | #endif\r |
30fdf114 LG |
94 | return 0;\r |
95 | }\r |