ce188d4d |
1 | /* Threads.c -- multithreading library\r |
2 | 2014-09-21 : Igor Pavlov : Public domain */\r |
3 | \r |
4 | #include "Precomp.h"\r |
5 | \r |
6 | #ifndef UNDER_CE\r |
7 | #include <process.h>\r |
8 | #endif\r |
9 | \r |
10 | #include "Threads.h"\r |
11 | \r |
12 | static WRes GetError()\r |
13 | {\r |
14 | DWORD res = GetLastError();\r |
15 | return (res) ? (WRes)(res) : 1;\r |
16 | }\r |
17 | \r |
18 | WRes HandleToWRes(HANDLE h) { return (h != 0) ? 0 : GetError(); }\r |
19 | WRes BOOLToWRes(BOOL v) { return v ? 0 : GetError(); }\r |
20 | \r |
21 | WRes HandlePtr_Close(HANDLE *p)\r |
22 | {\r |
23 | if (*p != NULL)\r |
24 | if (!CloseHandle(*p))\r |
25 | return GetError();\r |
26 | *p = NULL;\r |
27 | return 0;\r |
28 | }\r |
29 | \r |
30 | WRes Handle_WaitObject(HANDLE h) { return (WRes)WaitForSingleObject(h, INFINITE); }\r |
31 | \r |
32 | WRes Thread_Create(CThread *p, THREAD_FUNC_TYPE func, LPVOID param)\r |
33 | {\r |
34 | /* Windows Me/98/95: threadId parameter may not be NULL in _beginthreadex/CreateThread functions */\r |
35 | \r |
36 | #ifdef UNDER_CE\r |
37 | \r |
38 | DWORD threadId;\r |
39 | *p = CreateThread(0, 0, func, param, 0, &threadId);\r |
40 | \r |
41 | #else\r |
42 | \r |
43 | unsigned threadId;\r |
44 | *p = (HANDLE)_beginthreadex(NULL, 0, func, param, 0, &threadId);\r |
45 | \r |
46 | #endif\r |
47 | \r |
48 | /* maybe we must use errno here, but probably GetLastError() is also OK. */\r |
49 | return HandleToWRes(*p);\r |
50 | }\r |
51 | \r |
52 | WRes Event_Create(CEvent *p, BOOL manualReset, int signaled)\r |
53 | {\r |
54 | *p = CreateEvent(NULL, manualReset, (signaled ? TRUE : FALSE), NULL);\r |
55 | return HandleToWRes(*p);\r |
56 | }\r |
57 | \r |
58 | WRes Event_Set(CEvent *p) { return BOOLToWRes(SetEvent(*p)); }\r |
59 | WRes Event_Reset(CEvent *p) { return BOOLToWRes(ResetEvent(*p)); }\r |
60 | \r |
61 | WRes ManualResetEvent_Create(CManualResetEvent *p, int signaled) { return Event_Create(p, TRUE, signaled); }\r |
62 | WRes AutoResetEvent_Create(CAutoResetEvent *p, int signaled) { return Event_Create(p, FALSE, signaled); }\r |
63 | WRes ManualResetEvent_CreateNotSignaled(CManualResetEvent *p) { return ManualResetEvent_Create(p, 0); }\r |
64 | WRes AutoResetEvent_CreateNotSignaled(CAutoResetEvent *p) { return AutoResetEvent_Create(p, 0); }\r |
65 | \r |
66 | \r |
67 | WRes Semaphore_Create(CSemaphore *p, UInt32 initCount, UInt32 maxCount)\r |
68 | {\r |
69 | *p = CreateSemaphore(NULL, (LONG)initCount, (LONG)maxCount, NULL);\r |
70 | return HandleToWRes(*p);\r |
71 | }\r |
72 | \r |
73 | static WRes Semaphore_Release(CSemaphore *p, LONG releaseCount, LONG *previousCount)\r |
74 | { return BOOLToWRes(ReleaseSemaphore(*p, releaseCount, previousCount)); }\r |
75 | WRes Semaphore_ReleaseN(CSemaphore *p, UInt32 num)\r |
76 | { return Semaphore_Release(p, (LONG)num, NULL); }\r |
77 | WRes Semaphore_Release1(CSemaphore *p) { return Semaphore_ReleaseN(p, 1); }\r |
78 | \r |
79 | WRes CriticalSection_Init(CCriticalSection *p)\r |
80 | {\r |
81 | /* InitializeCriticalSection can raise only STATUS_NO_MEMORY exception */\r |
82 | #ifdef _MSC_VER\r |
83 | __try\r |
84 | #endif\r |
85 | {\r |
86 | InitializeCriticalSection(p);\r |
87 | /* InitializeCriticalSectionAndSpinCount(p, 0); */\r |
88 | }\r |
89 | #ifdef _MSC_VER\r |
90 | __except (EXCEPTION_EXECUTE_HANDLER) { return 1; }\r |
91 | #endif\r |
92 | return 0;\r |
93 | }\r |