diff options
Diffstat (limited to 'extern/lzma/Threads.c')
-rw-r--r-- | extern/lzma/Threads.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/extern/lzma/Threads.c b/extern/lzma/Threads.c new file mode 100644 index 00000000000..4fdd69b0d5c --- /dev/null +++ b/extern/lzma/Threads.c @@ -0,0 +1,109 @@ +/* Threads.c -- multithreading library +2008-08-05 +Igor Pavlov +Public domain */ + +#include "Threads.h" +#include <process.h> + +static WRes GetError() +{ + DWORD res = GetLastError(); + return (res) ? (WRes)(res) : 1; +} + +WRes HandleToWRes(HANDLE h) { return (h != 0) ? 0 : GetError(); } +WRes BOOLToWRes(BOOL v) { return v ? 0 : GetError(); } + +static WRes MyCloseHandle(HANDLE *h) +{ + if (*h != NULL) + if (!CloseHandle(*h)) + return GetError(); + *h = NULL; + return 0; +} + +WRes Thread_Create(CThread *thread, THREAD_FUNC_RET_TYPE (THREAD_FUNC_CALL_TYPE *startAddress)(void *), LPVOID parameter) +{ + unsigned threadId; /* Windows Me/98/95: threadId parameter may not be NULL in _beginthreadex/CreateThread functions */ + thread->handle = + /* CreateThread(0, 0, startAddress, parameter, 0, &threadId); */ + (HANDLE)_beginthreadex(NULL, 0, startAddress, parameter, 0, &threadId); + /* maybe we must use errno here, but probably GetLastError() is also OK. */ + return HandleToWRes(thread->handle); +} + +WRes WaitObject(HANDLE h) +{ + return (WRes)WaitForSingleObject(h, INFINITE); +} + +WRes Thread_Wait(CThread *thread) +{ + if (thread->handle == NULL) + return 1; + return WaitObject(thread->handle); +} + +WRes Thread_Close(CThread *thread) +{ + return MyCloseHandle(&thread->handle); +} + +WRes Event_Create(CEvent *p, BOOL manualReset, int initialSignaled) +{ + p->handle = CreateEvent(NULL, manualReset, (initialSignaled ? TRUE : FALSE), NULL); + return HandleToWRes(p->handle); +} + +WRes ManualResetEvent_Create(CManualResetEvent *p, int initialSignaled) + { return Event_Create(p, TRUE, initialSignaled); } +WRes ManualResetEvent_CreateNotSignaled(CManualResetEvent *p) + { return ManualResetEvent_Create(p, 0); } + +WRes AutoResetEvent_Create(CAutoResetEvent *p, int initialSignaled) + { return Event_Create(p, FALSE, initialSignaled); } +WRes AutoResetEvent_CreateNotSignaled(CAutoResetEvent *p) + { return AutoResetEvent_Create(p, 0); } + +WRes Event_Set(CEvent *p) { return BOOLToWRes(SetEvent(p->handle)); } +WRes Event_Reset(CEvent *p) { return BOOLToWRes(ResetEvent(p->handle)); } +WRes Event_Wait(CEvent *p) { return WaitObject(p->handle); } +WRes Event_Close(CEvent *p) { return MyCloseHandle(&p->handle); } + + +WRes Semaphore_Create(CSemaphore *p, UInt32 initiallyCount, UInt32 maxCount) +{ + p->handle = CreateSemaphore(NULL, (LONG)initiallyCount, (LONG)maxCount, NULL); + return HandleToWRes(p->handle); +} + +WRes Semaphore_Release(CSemaphore *p, LONG releaseCount, LONG *previousCount) +{ + return BOOLToWRes(ReleaseSemaphore(p->handle, releaseCount, previousCount)); +} +WRes Semaphore_ReleaseN(CSemaphore *p, UInt32 releaseCount) +{ + return Semaphore_Release(p, (LONG)releaseCount, NULL); +} +WRes Semaphore_Release1(CSemaphore *p) +{ + return Semaphore_ReleaseN(p, 1); +} + +WRes Semaphore_Wait(CSemaphore *p) { return WaitObject(p->handle); } +WRes Semaphore_Close(CSemaphore *p) { return MyCloseHandle(&p->handle); } + +WRes CriticalSection_Init(CCriticalSection *p) +{ + /* InitializeCriticalSection can raise only STATUS_NO_MEMORY exception */ + __try + { + InitializeCriticalSection(p); + /* InitializeCriticalSectionAndSpinCount(p, 0); */ + } + __except (EXCEPTION_EXECUTE_HANDLER) { return 1; } + return 0; +} + |