| 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 |