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/* $Id: tstRTShMem.cpp $ */
/** @file
* IPRT Testcase - RTShMem.
*/
/*
* Copyright (C) 2018-2023 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 <iprt/shmem.h>
#include <iprt/err.h>
#include <iprt/log.h>
#include <iprt/string.h>
#include <iprt/test.h>
/*********************************************************************************************************************************
* Global Variables *
*********************************************************************************************************************************/
/** Global shared memory object used across all tests. */
static RTSHMEM g_hShMem = NIL_RTSHMEM;
/** Data to read/write initially. */
static char g_szDataBefore[] = "Data before modification!";
/** Data to read/write for the modification. */
static char g_szDataAfter[] = "Data after modification!";
static void tstRTShMem2(void)
{
RTTestISub("Negative");
/** @todo */
}
static void tstRTShMem1(void)
{
RTTestISub("Basics");
/* create and destroy. */
int rc = RTShMemOpen(&g_hShMem, "tstRTShMem-Share", RTSHMEM_O_F_CREATE_EXCL | RTSHMEM_O_F_READWRITE | RTSHMEM_O_F_MAYBE_EXEC,
_512K, 0);
if (RT_FAILURE(rc))
{
RTTESTI_CHECK_RC_RETV(rc, VERR_ALREADY_EXISTS);
RTTESTI_CHECK_RC(RTShMemDelete("tstRTShMem-Share"), VINF_SUCCESS);
RTTESTI_CHECK_RC_RETV(RTShMemOpen(&g_hShMem, "tstRTShMem-Share", RTSHMEM_O_F_CREATE | RTSHMEM_O_F_READWRITE | RTSHMEM_O_F_MAYBE_EXEC,
_512K, 0),
VINF_SUCCESS);
}
RTTESTI_CHECK_RETV(g_hShMem != NIL_RTSHMEM);
/* Query the size. */
size_t cbShMem = 0;
RTTESTI_CHECK_RC(RTShMemQuerySize(g_hShMem, &cbShMem), VINF_SUCCESS);
RTTESTI_CHECK(cbShMem == _512K);
/* Create a mapping. */
void *pvMap;
RTTESTI_CHECK_RC_RETV(RTShMemMapRegion(g_hShMem, 0, cbShMem, RTSHMEM_MAP_F_READ | RTSHMEM_MAP_F_WRITE, &pvMap), VINF_SUCCESS);
memset(pvMap, 0, cbShMem);
memcpy(pvMap, &g_szDataBefore[0], sizeof(g_szDataBefore));
/* Open the shared memory object and create a second mapping. */
RTSHMEM hShMemRead = NIL_RTSHMEM;
RTTESTI_CHECK_RC_RETV(RTShMemOpen(&hShMemRead, "tstRTShMem-Share", RTSHMEM_O_F_READWRITE | RTSHMEM_O_F_MAYBE_EXEC,
0, 0),
VINF_SUCCESS);
RTTESTI_CHECK_RETV(hShMemRead != NIL_RTSHMEM);
void *pvMapRead = NULL;
RTTESTI_CHECK_RC(RTShMemQuerySize(hShMemRead, &cbShMem), VINF_SUCCESS);
RTTESTI_CHECK(cbShMem == _512K);
RTTESTI_CHECK_RC_RETV(RTShMemMapRegion(hShMemRead, 0, cbShMem, RTSHMEM_MAP_F_READ | RTSHMEM_MAP_F_WRITE, &pvMapRead), VINF_SUCCESS);
RTTESTI_CHECK(!memcmp(pvMapRead, &g_szDataBefore[0], sizeof(g_szDataBefore)));
RTTESTI_CHECK(!memcmp(pvMapRead, pvMap, cbShMem));
/* Alter the data in the first mapping and check that it is visible in the second one. */
memcpy(pvMap, &g_szDataAfter[0], sizeof(g_szDataAfter));
RTTESTI_CHECK(!memcmp(pvMapRead, &g_szDataAfter[0], sizeof(g_szDataAfter)));
RTTESTI_CHECK(!memcmp(pvMapRead, pvMap, cbShMem));
RTTESTI_CHECK_RC(RTShMemUnmapRegion(hShMemRead, pvMapRead), VINF_SUCCESS);
RTTESTI_CHECK_RC(RTShMemClose(hShMemRead), VINF_SUCCESS);
RTTESTI_CHECK_RC(RTShMemUnmapRegion(g_hShMem, pvMap), VINF_SUCCESS);
RTTESTI_CHECK_RC(RTShMemClose(g_hShMem), VINF_SUCCESS);
g_hShMem = NIL_RTSHMEM;
}
int main()
{
RTTEST hTest;
int rc = RTTestInitAndCreate("tstRTShMem", &hTest);
if (rc)
return rc;
RTTestBanner(hTest);
/*
* The tests.
*/
tstRTShMem1();
if (RTTestErrorCount(hTest) == 0)
{
bool fMayPanic = RTAssertMayPanic();
bool fQuiet = RTAssertAreQuiet();
RTAssertSetMayPanic(false);
RTAssertSetQuiet(true);
tstRTShMem2();
RTAssertSetQuiet(fQuiet);
RTAssertSetMayPanic(fMayPanic);
}
if (g_hShMem != NIL_RTSHMEM)
{
RTTESTI_CHECK_RC(RTShMemClose(g_hShMem), VINF_SUCCESS);
g_hShMem = NIL_RTSHMEM;
}
/*
* Summary.
*/
return RTTestSummaryAndDestroy(hTest);
}
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