96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
|
/* Threads.c -- multithreading library
|
||
|
|
2017-06-26 : Igor Pavlov : Public domain */
|
||
|
|
|
||
|
|
#include "Precomp.h"
|
||
|
|
|
||
|
|
#ifndef UNDER_CE
|
||
|
|
#include <process.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include "Threads.h"
|
||
|
|
|
||
|
|
static WRes GetError()
|
||
|
|
{
|
||
|
|
DWORD res = GetLastError();
|
||
|
|
return res ? (WRes)res : 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static WRes HandleToWRes(HANDLE h) { return (h != NULL) ? 0 : GetError(); }
|
||
|
|
static WRes BOOLToWRes(BOOL v) { return v ? 0 : GetError(); }
|
||
|
|
|
||
|
|
WRes HandlePtr_Close(HANDLE *p)
|
||
|
|
{
|
||
|
|
if (*p != NULL)
|
||
|
|
{
|
||
|
|
if (!CloseHandle(*p))
|
||
|
|
return GetError();
|
||
|
|
*p = NULL;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
WRes Handle_WaitObject(HANDLE h) { return (WRes)WaitForSingleObject(h, INFINITE); }
|
||
|
|
|
||
|
|
WRes Thread_Create(CThread *p, THREAD_FUNC_TYPE func, LPVOID param)
|
||
|
|
{
|
||
|
|
/* Windows Me/98/95: threadId parameter may not be NULL in _beginthreadex/CreateThread functions */
|
||
|
|
|
||
|
|
#ifdef UNDER_CE
|
||
|
|
|
||
|
|
DWORD threadId;
|
||
|
|
*p = CreateThread(0, 0, func, param, 0, &threadId);
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
unsigned threadId;
|
||
|
|
*p = (HANDLE)_beginthreadex(NULL, 0, func, param, 0, &threadId);
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* maybe we must use errno here, but probably GetLastError() is also OK. */
|
||
|
|
return HandleToWRes(*p);
|
||
|
|
}
|
||
|
|
|
||
|
|
static WRes Event_Create(CEvent *p, BOOL manualReset, int signaled)
|
||
|
|
{
|
||
|
|
*p = CreateEvent(NULL, manualReset, (signaled ? TRUE : FALSE), NULL);
|
||
|
|
return HandleToWRes(*p);
|
||
|
|
}
|
||
|
|
|
||
|
|
WRes Event_Set(CEvent *p) { return BOOLToWRes(SetEvent(*p)); }
|
||
|
|
WRes Event_Reset(CEvent *p) { return BOOLToWRes(ResetEvent(*p)); }
|
||
|
|
|
||
|
|
WRes ManualResetEvent_Create(CManualResetEvent *p, int signaled) { return Event_Create(p, TRUE, signaled); }
|
||
|
|
WRes AutoResetEvent_Create(CAutoResetEvent *p, int signaled) { return Event_Create(p, FALSE, signaled); }
|
||
|
|
WRes ManualResetEvent_CreateNotSignaled(CManualResetEvent *p) { return ManualResetEvent_Create(p, 0); }
|
||
|
|
WRes AutoResetEvent_CreateNotSignaled(CAutoResetEvent *p) { return AutoResetEvent_Create(p, 0); }
|
||
|
|
|
||
|
|
|
||
|
|
WRes Semaphore_Create(CSemaphore *p, UInt32 initCount, UInt32 maxCount)
|
||
|
|
{
|
||
|
|
*p = CreateSemaphore(NULL, (LONG)initCount, (LONG)maxCount, NULL);
|
||
|
|
return HandleToWRes(*p);
|
||
|
|
}
|
||
|
|
|
||
|
|
static WRes Semaphore_Release(CSemaphore *p, LONG releaseCount, LONG *previousCount)
|
||
|
|
{ return BOOLToWRes(ReleaseSemaphore(*p, releaseCount, previousCount)); }
|
||
|
|
WRes Semaphore_ReleaseN(CSemaphore *p, UInt32 num)
|
||
|
|
{ return Semaphore_Release(p, (LONG)num, NULL); }
|
||
|
|
WRes Semaphore_Release1(CSemaphore *p) { return Semaphore_ReleaseN(p, 1); }
|
||
|
|
|
||
|
|
WRes CriticalSection_Init(CCriticalSection *p)
|
||
|
|
{
|
||
|
|
/* InitializeCriticalSection can raise only STATUS_NO_MEMORY exception */
|
||
|
|
#ifdef _MSC_VER
|
||
|
|
__try
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
InitializeCriticalSection(p);
|
||
|
|
/* InitializeCriticalSectionAndSpinCount(p, 0); */
|
||
|
|
}
|
||
|
|
#ifdef _MSC_VER
|
||
|
|
__except (EXCEPTION_EXECUTE_HANDLER) { return 1; }
|
||
|
|
#endif
|
||
|
|
return 0;
|
||
|
|
}
|