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/* $Id: bs3-locking-1.c $ */
/** @file
* BS3Kit - bs3-locking-1, 16-bit C code.
*/
/*
* Copyright (C) 2007-2022 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <bs3kit.h>
#include <iprt/asm-amd64-x86.h>
#include <VBox/VMMDevTesting.h>
/*********************************************************************************************************************************
* Global Variables *
*********************************************************************************************************************************/
static struct
{
const char * BS3_FAR pszName;
uint32_t cInnerLoops;
uint32_t uCtrlLo;
uint32_t uCtrlHi;
} g_aLockingTests[] =
{
#if 1
# if 1 /* no contention benchmark */
{
"None 0us/inf/0k",
_32K,
0,
0,
},
{
"RW None Exl 0us/inf/0k",
_32K,
0,
0 | VMMDEV_TESTING_LOCKED_HI_TYPE_RW,
},
# endif
{
"RW None Shr 0us/inf/0k",
_32K,
0,
0 | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_EMT_SHARED,
},
# if 1
{
"Contention 500us/250us/64k",
2000 + 16384,
500 | (UINT32_C(250) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
64 | VMMDEV_TESTING_LOCKED_HI_ENABLED,
},
{
"Contention 100us/50us/8k",
10000 + 4096,
100 | (UINT32_C(50) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
8 | VMMDEV_TESTING_LOCKED_HI_ENABLED,
},
{
"Contention 10us/1us/0k",
16384 + 4096,
10 | (UINT32_C(1) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
0 | VMMDEV_TESTING_LOCKED_HI_ENABLED,
},
{
"Contention 500us/250us/64k poke",
2000 + 16384,
500 | (UINT32_C(250) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
64 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_POKE,
},
{
"Contention 100us/50us/1k poke",
10000 + 4096,
100 | (UINT32_C(50) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
1 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_POKE,
},
{
"Contention 500us/250us/64k poke void",
2000 + 16384,
500 | (UINT32_C(250) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
64 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_POKE | VMMDEV_TESTING_LOCKED_HI_BUSY_SUCCESS
},
{
"Contention 50us/25us/8k poke void",
20000 + 4096,
50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
1 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_POKE | VMMDEV_TESTING_LOCKED_HI_BUSY_SUCCESS
},
# endif
# if 1
{
"RW Contention Exl/Exl 50us/25us/16k",
20000 + 4096,
50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW
},
# endif
{
"RW Contention Shr/Exl 50us/25us/16k",
20000 + 4096,
50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_THREAD_SHARED
},
# if 1
{
"RW Contention Exl/Exl 50us/25us/16k poke",
20000 + 4096,
50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_POKE
},
# endif
{
"RW Contention Shr/Exl 50us/25us/16k poke",
20000 + 4096,
50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_THREAD_SHARED
| VMMDEV_TESTING_LOCKED_HI_POKE | VMMDEV_TESTING_LOCKED_HI_BUSY_SUCCESS
},
# if 1
{
"RW Contention Exl/Exl 50us/25us/16k poke void",
20000 + 4096,
50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_POKE
},
# endif
{
"RW Contention Shr/Exl 50us/25us/16k poke void",
20000 + 4096,
50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_THREAD_SHARED
| VMMDEV_TESTING_LOCKED_HI_POKE | VMMDEV_TESTING_LOCKED_HI_BUSY_SUCCESS
},
#endif
{
"RW Contention Exl/Shr 50us/25us/16k",
20000 + 4096,
50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_EMT_SHARED
},
{
"RW Contention Exl/Shr poke 250us/25us/16k",
10000 + 4096,
250 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_EMT_SHARED
| VMMDEV_TESTING_LOCKED_HI_POKE
},
{
"RW Contention Exl/Shr poke void 250us/25us/16k",
10000 + 4096,
250 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW | VMMDEV_TESTING_LOCKED_HI_EMT_SHARED
| VMMDEV_TESTING_LOCKED_HI_POKE | VMMDEV_TESTING_LOCKED_HI_BUSY_SUCCESS
},
{
"RW None Shr/Shr 50us/25us/16k",
20000 + 4096,
50 | (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
16 | VMMDEV_TESTING_LOCKED_HI_ENABLED | VMMDEV_TESTING_LOCKED_HI_TYPE_RW
| VMMDEV_TESTING_LOCKED_HI_THREAD_SHARED | VMMDEV_TESTING_LOCKED_HI_EMT_SHARED
},
};
BS3_DECL(void) Main_rm()
{
uint64_t const cNsPerTest = RT_NS_15SEC;
unsigned i;
Bs3InitAll_rm();
Bs3TestInit("bs3-locking-1");
/*
* Since this is a host-side test and we don't have raw-mode any more, we
* just stay in raw-mode when doing the test.
*/
for (i = 0; i < RT_ELEMENTS(g_aLockingTests); i++)
{
uint64_t const nsStart = Bs3TestNow();
uint64_t cNsElapsed = 0;
uint32_t cTotal = 0;
uint32_t j;
Bs3TestSub(g_aLockingTests[i].pszName);
ASMOutU32(VMMDEV_TESTING_IOPORT_LOCKED_LO, g_aLockingTests[i].uCtrlLo);
ASMOutU32(VMMDEV_TESTING_IOPORT_LOCKED_HI, g_aLockingTests[i].uCtrlHi);
for (j = 0; j < _2M && cTotal < _1G; j++)
{
/* The inner loop should avoid calling Bs3TestNow too often, while not overshooting the . */
unsigned iInner = (unsigned)g_aLockingTests[i].cInnerLoops;
cTotal += iInner;
while (iInner-- > 0)
ASMInU32(VMMDEV_TESTING_IOPORT_LOCKED_LO);
cNsElapsed = Bs3TestNow() - nsStart;
if (cNsElapsed >= cNsPerTest)
break;
}
/* Disable locking. */
ASMOutU32(VMMDEV_TESTING_IOPORT_LOCKED_HI, 0);
Bs3TestValue("Loops", cTotal, VMMDEV_TESTING_UNIT_OCCURRENCES);
Bs3TestValue("Elapsed", cNsElapsed, VMMDEV_TESTING_UNIT_NS);
Bs3TestValue("PerLoop", cNsElapsed / cTotal, VMMDEV_TESTING_UNIT_NS_PER_OCCURRENCE);
}
Bs3TestTerm();
}
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