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/* $Id: tstOnce.cpp $ */
/** @file
* IPRT Testcase - RTOnce.
*/
/*
* Copyright (C) 2008-2020 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 <iprt/once.h>
#include <iprt/stream.h>
#include <iprt/initterm.h>
#include <iprt/thread.h>
#include <iprt/semaphore.h>
#include <iprt/string.h>
#include <iprt/errcore.h>
#include <iprt/asm.h>
/*********************************************************************************************************************************
* Global Variables *
*********************************************************************************************************************************/
static int g_cErrors = 0;
static bool g_fOnceCB1 = false;
static uint32_t volatile g_cOnce2CB = 0;
static bool volatile g_fOnce2Ready = false;
static RTONCE g_Once2 = RTONCE_INITIALIZER;
static RTSEMEVENTMULTI g_hEventMulti = NIL_RTSEMEVENTMULTI;
static DECLCALLBACK(int) Once1CB(void *pvUser)
{
if (g_fOnceCB1)
return VERR_WRONG_ORDER;
if (pvUser != (void *)1)
{
RTPrintf("tstOnce: ERROR - Once1CB: pvUser=%p!\n", pvUser);
g_cErrors++;
return VERR_INVALID_PARAMETER;
}
return VINF_SUCCESS;
}
static DECLCALLBACK(int) Once2CB(void *pvUser)
{
if (ASMAtomicIncU32(&g_cOnce2CB) != 1)
{
RTPrintf("tstOnce: ERROR - Once2CB: g_cOnce2CB not zero!\n");
g_cErrors++;
return VERR_WRONG_ORDER;
}
if (pvUser != (void *)42)
{
RTPrintf("tstOnce: ERROR - Once2CB: pvUser=%p!\n", pvUser);
g_cErrors++;
return VERR_INVALID_PARAMETER;
}
RTThreadSleep(2);
Assert(!g_fOnce2Ready);
ASMAtomicWriteBool(&g_fOnce2Ready, true);
return VINF_SUCCESS;
}
static DECLCALLBACK(int) Once2Thread(RTTHREAD hThread, void *pvUser)
{
NOREF(hThread); NOREF(pvUser);
int rc = RTSemEventMultiWait(g_hEventMulti, RT_INDEFINITE_WAIT);
if (RT_FAILURE(rc))
return rc;
rc = RTOnce(&g_Once2, Once2CB, (void *)42);
if (RT_SUCCESS(rc))
{
if (!ASMAtomicUoReadBool(&g_fOnce2Ready))
{
RTPrintf("tstOnce: ERROR - Once2CB: Not initialized!\n");
g_cErrors++;
}
}
return rc;
}
int main()
{
RTR3InitExeNoArguments(0);
/*
* Just a simple testcase.
*/
RTPrintf("tstOnce: TESTING - smoke...\n");
RTONCE Once1 = RTONCE_INITIALIZER;
g_fOnceCB1 = false;
int rc = RTOnce(&Once1, Once1CB, (void *)1);
if (rc != VINF_SUCCESS)
RTPrintf("tstOnce: ERROR - Once1, 1 failed, rc=%Rrc\n", rc);
g_fOnceCB1 = false;
rc = RTOnce(&Once1, Once1CB, (void *)1);
if (rc != VINF_SUCCESS)
RTPrintf("tstOnce: ERROR - Once1, 2 failed, rc=%Rrc\n", rc);
/*
* Throw a bunch of threads up against a init once thing.
*/
RTPrintf("tstOnce: TESTING - bunch of threads...\n");
/* create the semaphore they'll be waiting on. */
rc = RTSemEventMultiCreate(&g_hEventMulti);
if (RT_FAILURE(rc))
{
RTPrintf("tstOnce: FATAL ERROR - RTSemEventMultiCreate returned %Rrc\n", rc);
return 1;
}
/* create the threads */
RTTHREAD aThreads[32];
for (unsigned i = 0; i < RT_ELEMENTS(aThreads); i++)
{
char szName[16];
RTStrPrintf(szName, sizeof(szName), "ONCE2-%d\n", i);
rc = RTThreadCreate(&aThreads[i], Once2Thread, NULL, 0, RTTHREADTYPE_DEFAULT, RTTHREADFLAGS_WAITABLE, szName);
if (RT_FAILURE(rc))
{
RTPrintf("tstOnce: ERROR - failed to create thread #%d\n", i);
g_cErrors++;
}
}
/* kick them off and yield */
rc = RTSemEventMultiSignal(g_hEventMulti);
if (RT_FAILURE(rc))
{
RTPrintf("tstOnce: FATAL ERROR - RTSemEventMultiSignal returned %Rrc\n", rc);
return 1;
}
RTThreadYield();
/* wait for all of them to finish up, 30 seconds each. */
for (unsigned i = 0; i < RT_ELEMENTS(aThreads); i++)
if (aThreads[i] != NIL_RTTHREAD)
{
int rc2;
rc = RTThreadWait(aThreads[i], 30*1000, &rc2);
if (RT_FAILURE(rc))
{
RTPrintf("tstOnce: ERROR - RTThreadWait on thread #%u returned %Rrc\n", i, rc);
g_cErrors++;
}
else if (RT_FAILURE(rc2))
{
RTPrintf("tstOnce: ERROR - Thread #%u returned %Rrc\n", i, rc2);
g_cErrors++;
}
}
/*
* Summary.
*/
if (!g_cErrors)
RTPrintf("tstOnce: SUCCESS\n");
else
RTPrintf("tstOnce: FAILURE - %d errors\n", g_cErrors);
return !!g_cErrors;
}
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