tstR0ThreadPreemption.cpp revision 1d42c7799e7c35c5b36a2494cde9a47e5651cead
/* $Id$ */
/** @file
* IPRT R0 Testcase - Thread Preemption.
*/
/*
* Copyright (C) 2009-2011 Oracle Corporation
*
* 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 (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 <iprt/asm-amd64-x86.h>
#include "tstR0ThreadPreemption.h"
#define TSTRTR0THREADCTXDATA_MAGIC 0xc01a50da
/**
* Thread-context hook data.
*/
typedef struct TSTRTR0THREADCTXDATA
{
/* For RTTHREADCTXEVENT_PREEMPTING. */
bool fPreemptingSuccess;
volatile bool fPreemptingInvoked;
/* For RTTHREADCTXEVENT_RESUMED. */
bool fResumedSuccess;
volatile bool fResumedInvoked;
char achResult[512];
/**
* Thread-context hook function.
*
* @param enmEvent The thread-context event.
* @param pvUser Pointer to the user argument.
*/
{
{
return;
}
switch (enmEvent)
{
{
/* We've already been called once, we now might very well be on another CPU. Nothing to do here. */
if (pData->fPreemptingSuccess)
return;
{
"!tstR0ThreadCtxHook[RTTHREADCTXEVENT_PREEMPTING]: Called with preemption enabled");
break;
}
{
"!tstR0ThreadCtxHook[RTTHREADCTXEVENT_PREEMPTING]: migrated uSourceCpuId=%RU32 uCurrentCpuId=%RU32",
break;
}
pData->fPreemptingSuccess = true;
break;
}
case RTTHREADCTXEVENT_RESUMED:
{
/* We've already been called once successfully, nothing more to do. */
return;
if (!pData->fPreemptingSuccess)
{
"!tstR0ThreadCtxHook[RTTHREADCTXEVENT_RESUMED]: Called before preempting callback was invoked.");
}
break;
}
default:
break;
}
}
/**
* Service request callback function.
*
* @returns VBox status code.
* @param pSession The caller's session.
* @param u64Arg 64-bit integer argument.
* @param pReqHdr The request header. Input / Output. Optional.
*/
{
if (u64Arg)
return VERR_INVALID_PARAMETER;
return VERR_INVALID_PARAMETER;
return VERR_INVALID_PARAMETER;
*pszErr = '\0';
/*
* The big switch.
*/
switch (uOperation)
{
break;
break;
{
if (!ASMIntAreEnabled())
else if (!RTThreadPreemptIsEnabled(NIL_RTTHREAD))
else
{
else if (!ASMIntAreEnabled())
}
break;
}
if (!RTThreadPreemptIsPendingTrusty())
break;
{
{
#ifdef RT_OS_DARWIN
#else
#endif
if (ASMIntAreEnabled())
{
bool fPending;
do
{
cLoops++;
} while ( !fPending
&& cNanosElapsed < cNsMax
&& cNanosSysElapsed < cNsMax
if (!fPending)
else if (cLoops == 1)
else
RTStrPrintf(pszErr, cchErr, "RTThreadPreemptIsPending returned true after %'llu loops / %'llu ns / %'llu ns (sys)",
}
else
}
else
break;
}
{
{
{
RTStrPrintf(pszErr, cchErr, "!RTThreadPreemptIsEnabled returns true after 3rd RTThreadPreemptDisable");
RTStrPrintf(pszErr, cchErr, "!RTThreadPreemptIsEnabled returns true after 1st RTThreadPreemptRestore");
}
else
RTStrPrintf(pszErr, cchErr, "!RTThreadPreemptIsEnabled returns true after 2nd RTThreadPreemptDisable");
RTStrPrintf(pszErr, cchErr, "!RTThreadPreemptIsEnabled returns true after 2nd RTThreadPreemptRestore");
}
else
RTStrPrintf(pszErr, cchErr, "!RTThreadPreemptIsEnabled returns true after 1st RTThreadPreemptDisable");
RTStrPrintf(pszErr, cchErr, "!RTThreadPreemptIsEnabled returns false after 3rd RTThreadPreemptRestore");
break;
}
{
{
break;
}
if (RT_FAILURE(rc))
{
if (rc == VERR_NOT_SUPPORTED)
else
break;
}
pCtxData->fPreemptingSuccess = false;
pCtxData->fPreemptingInvoked = false;
pCtxData->fResumedInvoked = false;
pCtxData->fResumedSuccess = false;
if (RT_FAILURE(rc))
{
break;
}
for (;;)
{
|| cMsSlept >= cMsTimeout)
{
break;
}
}
{
RTStrPrintf(pszErr, cchErr, "!tstR0ThreadCtxHooks[RTTHREADCTXEVENT_PREEMPTING] not invoked after ca. %u ms",
cMsSlept);
}
else if (!pCtxData->fPreemptingSuccess)
else
{
cMsSlept = 0;
for (;;)
{
|| cMsSlept >= cMsTimeout)
{
break;
}
}
{
RTStrPrintf(pszErr, cchErr, "!tstR0ThreadCtxHooks[RTTHREADCTXEVENT_RESUMED] not invoked after ca. %u ms",
cMsSlept);
}
else if (!pCtxData->fResumedSuccess)
}
break;
}
default:
break;
}
/* The error indicator is the '!' in the message buffer. */
return VINF_SUCCESS;
}