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/* $Id: thread2-r0drv-nt.cpp $ */
/** @file
* IPRT - Threads (Part 2), Ring-0 Driver, NT.
*/
/*
* Copyright (C) 2006-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) 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.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include "the-nt-kernel.h"
#include <iprt/thread.h>
#include <iprt/assert.h>
#include <iprt/errcore.h>
#include "internal/thread.h"
DECLHIDDEN(int) rtThreadNativeInit(void)
{
/* No TLS in Ring-0. :-/ */
return VINF_SUCCESS;
}
RTDECL(RTTHREAD) RTThreadSelf(void)
{
return rtThreadGetByNative((RTNATIVETHREAD)PsGetCurrentThread());
}
DECLHIDDEN(int) rtThreadNativeSetPriority(PRTTHREADINT pThread, RTTHREADTYPE enmType)
{
/*
* Convert the IPRT priority type to NT priority.
*
* The NT priority is in the range 0..32, with realtime starting
* at 16 and the default for user processes at 8. (Should try find
* the appropriate #defines for some of this...)
*/
KPRIORITY Priority;
switch (enmType)
{
case RTTHREADTYPE_INFREQUENT_POLLER: Priority = 6; break;
case RTTHREADTYPE_EMULATION: Priority = 7; break;
case RTTHREADTYPE_DEFAULT: Priority = 8; break;
case RTTHREADTYPE_MSG_PUMP: Priority = 9; break;
case RTTHREADTYPE_IO: Priority = LOW_REALTIME_PRIORITY; break;
case RTTHREADTYPE_TIMER: Priority = MAXIMUM_PRIORITY; break;
default:
AssertMsgFailed(("enmType=%d\n", enmType));
return VERR_INVALID_PARAMETER;
}
/*
* Do the actual modification.
*/
/*KPRIORITY oldPririty = */KeSetPriorityThread((PKTHREAD)pThread->Core.Key, Priority);
return VINF_SUCCESS;
}
DECLHIDDEN(int) rtThreadNativeAdopt(PRTTHREADINT pThread)
{
RT_NOREF1(pThread);
return VERR_NOT_IMPLEMENTED;
}
DECLHIDDEN(void) rtThreadNativeWaitKludge(PRTTHREADINT pThread)
{
PVOID pvThreadObj = pThread->Core.Key;
NTSTATUS rcNt = KeWaitForSingleObject(pvThreadObj, Executive, KernelMode, FALSE, NULL);
AssertMsg(rcNt == STATUS_SUCCESS, ("rcNt=%#x\n", rcNt)); RT_NOREF1(rcNt);
}
DECLHIDDEN(void) rtThreadNativeDestroy(PRTTHREADINT pThread)
{
NOREF(pThread);
}
/**
* Native kernel thread wrapper function.
*
* This will forward to rtThreadMain and do termination upon return.
*
* @param pvArg Pointer to the argument package.
*/
static VOID rtThreadNativeMain(PVOID pvArg)
{
PETHREAD Self = PsGetCurrentThread();
PRTTHREADINT pThread = (PRTTHREADINT)pvArg;
rtThreadMain(pThread, (RTNATIVETHREAD)Self, &pThread->szName[0]);
ObDereferenceObject(Self); /* the rtThreadNativeCreate ref. */
}
DECLHIDDEN(int) rtThreadNativeCreate(PRTTHREADINT pThreadInt, PRTNATIVETHREAD pNativeThread)
{
/*
* PsCreateSysemThread create a thread an give us a handle in return.
* We requests the object for that handle and then close it, so what
* we keep around is the pointer to the thread object and not a handle.
* The thread will dereference the object before returning.
*/
HANDLE hThread = NULL;
OBJECT_ATTRIBUTES ObjAttr;
InitializeObjectAttributes(&ObjAttr, NULL, OBJ_KERNEL_HANDLE, NULL, NULL);
NTSTATUS rc = PsCreateSystemThread(&hThread,
THREAD_ALL_ACCESS,
&ObjAttr,
NULL /* ProcessHandle - kernel */,
NULL /* ClientID - kernel */,
rtThreadNativeMain,
pThreadInt);
if (NT_SUCCESS(rc))
{
PVOID pvThreadObj;
rc = ObReferenceObjectByHandle(hThread, THREAD_ALL_ACCESS, NULL /* object type */,
KernelMode, &pvThreadObj, NULL /* handle info */);
if (NT_SUCCESS(rc))
{
ZwClose(hThread);
*pNativeThread = (RTNATIVETHREAD)pvThreadObj;
}
else
AssertMsgFailed(("%#x\n", rc));
}
return RTErrConvertFromNtStatus(rc);
}
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