sems-win32.cpp revision 677833bc953b6cb418c701facbdcf4aa18d6c44e
/* $Id$ */
/** @file
* InnoTek Portable Runtime - Semaphores, implementation for Windows host platform.
*/
/*
* Copyright (C) 2006 InnoTek Systemberatung GmbH
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* General Public License as published by the Free Software Foundation,
* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
* distribution. VirtualBox OSE is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY of any kind.
*
* If you received this file as part of a commercial VirtualBox
* distribution, then only the terms of your commercial VirtualBox
* license agreement apply instead of the previous paragraph.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#define LOG_GROUP RTLOGGROUP_SEMAPHORE
#include <Windows.h>
#include <iprt/semaphore.h>
/** Converts semaphore to win32 handle. */
{
/*
* Create the semaphore.
* (Auto reset, not signaled, private event object.)
*/
if (hev)
{
return VINF_SUCCESS;
}
return RTErrConvertFromWin32(GetLastError());
}
{
/*
* Close semaphore handle.
*/
return VINF_SUCCESS;
return RTErrConvertFromWin32(GetLastError());
}
{
/*
* Wait for condition.
*/
int rc = WaitForSingleObjectEx(SEM2HND(EventSem), cMillies == RT_INDEFINITE_WAIT ? INFINITE : cMillies, TRUE);
switch (rc)
{
case WAIT_OBJECT_0: return VINF_SUCCESS;
case WAIT_TIMEOUT: return VERR_TIMEOUT;
case WAIT_IO_COMPLETION: return VERR_INTERRUPTED;
case WAIT_ABANDONED: return VERR_SEM_OWNER_DIED;
default:
{
if (rc2)
return rc2;
return VERR_INTERNAL_ERROR;
}
}
}
{
/*
* Signal the object.
*/
return VINF_SUCCESS;
return RTErrConvertFromWin32(GetLastError());
}
{
/*
* Create the semaphore.
* (Manual reset, not signaled, private event object.)
*/
if (hev)
{
return VINF_SUCCESS;
}
return RTErrConvertFromWin32(GetLastError());
}
{
/*
* Close semaphore handle.
*/
return VINF_SUCCESS;
return RTErrConvertFromWin32(GetLastError());
}
{
/*
* Signal the object.
*/
return VINF_SUCCESS;
AssertMsgFailed(("Signaling EventMultiSem %p failed, lasterr=%d\n", EventMultiSem, GetLastError()));
return RTErrConvertFromWin32(GetLastError());
}
{
/*
* Reset the object.
*/
return VINF_SUCCESS;
AssertMsgFailed(("Resetting EventMultiSem %p failed, lasterr=%d\n", EventMultiSem, GetLastError()));
return RTErrConvertFromWin32(GetLastError());
}
{
/*
* Wait for condition.
*/
int rc = WaitForSingleObjectEx(SEM2HND(EventMultiSem), cMillies == RT_INDEFINITE_WAIT ? INFINITE : cMillies, TRUE);
switch (rc)
{
case WAIT_OBJECT_0: return VINF_SUCCESS;
case WAIT_TIMEOUT: return VERR_TIMEOUT;
case WAIT_IO_COMPLETION: return VERR_INTERRUPTED;
case WAIT_ABANDONED: return VERR_SEM_OWNER_DIED;
default:
{
AssertMsgFailed(("Wait on EventMultiSem %p failed, rc=%d lasterr=%d\n", EventMultiSem, rc, GetLastError()));
if (rc2)
return rc2;
return VERR_INTERNAL_ERROR;
}
}
}
{
/*
* Create the semaphore.
*/
if (hmtx)
{
return VINF_SUCCESS;
}
return RTErrConvertFromWin32(GetLastError());
}
{
/*
* Close semaphore handle.
*/
return VINF_SUCCESS;
return RTErrConvertFromWin32(GetLastError());
}
{
/*
* Lock mutex semaphore.
*/
int rc = WaitForSingleObjectEx(SEM2HND(MutexSem), cMillies == RT_INDEFINITE_WAIT ? INFINITE : cMillies, TRUE);
switch (rc)
{
case WAIT_OBJECT_0: return VINF_SUCCESS;
case WAIT_TIMEOUT: return VERR_TIMEOUT;
case WAIT_IO_COMPLETION: return VERR_INTERRUPTED;
case WAIT_ABANDONED: return VERR_SEM_OWNER_DIED;
default:
{
if (rc2 != 0)
return rc2;
return VERR_INTERNAL_ERROR;
}
}
}
{
/*
* Unlock mutex semaphore.
*/
return VINF_SUCCESS;
return RTErrConvertFromWin32(GetLastError());
}