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/* $Id$ */
/** @file
* IPRT Testcase - Lock free circular buffers.
*/
/*
* Copyright (C) 2010-2022 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/circbuf.h>
#include <iprt/errcore.h>
#include <iprt/string.h>
#include <iprt/test.h>
/**
* Basic API checks.
*/
static void tst1(void)
{
void *pvBuf;
size_t cbSize;
char achTestPattern1[] = { 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9 };
// char achTestPattern2[] = { 0x8, 0x9, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9 };
// char achTestPattern3[] = { 0x5, 0x6, 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7 };
/* Create */
RTTestISub("Creation");
PRTCIRCBUF pBuf;
RTTESTI_CHECK_RC(RTCircBufCreate(&pBuf, 10), VINF_SUCCESS);
RTTESTI_CHECK(RTCircBufFree(pBuf) == 10);
RTTESTI_CHECK(RTCircBufUsed(pBuf) == 0);
/* Full write */
RTTestISub("Full write");
RTCircBufAcquireWriteBlock(pBuf, 10, &pvBuf, &cbSize);
RTTESTI_CHECK(cbSize == 10);
memcpy(pvBuf, achTestPattern1, 10);
RTCircBufReleaseWriteBlock(pBuf, 10);
RTTESTI_CHECK(RTCircBufFree(pBuf) == 0);
RTTESTI_CHECK(RTCircBufUsed(pBuf) == 10);
// RTTESTI_CHECK(memcmp(pBuf->pvBuf, achTestPattern1, 10) == 0); /* Check the internal state */
/* Half read */
RTTestISub("Half read");
RTCircBufAcquireReadBlock(pBuf, 5, &pvBuf, &cbSize);
RTTESTI_CHECK(cbSize == 5);
RTTESTI_CHECK(memcmp(pvBuf, achTestPattern1, 5) == 0);
RTCircBufReleaseReadBlock(pBuf, 5);
RTTESTI_CHECK(RTCircBufFree(pBuf) == 5);
RTTESTI_CHECK(RTCircBufUsed(pBuf) == 5);
/* Sub write */
RTTestISub("Sub write");
RTCircBufAcquireWriteBlock(pBuf, 2, &pvBuf, &cbSize);
RTTESTI_CHECK(cbSize == 2);
memcpy(pvBuf, &achTestPattern1[8], 2);
RTCircBufReleaseWriteBlock(pBuf, 2);
RTTESTI_CHECK(RTCircBufFree(pBuf) == 3);
RTTESTI_CHECK(RTCircBufUsed(pBuf) == 7);
// RTTESTI_CHECK(memcmp(pBuf->pvBuf, achTestPattern2, 10) == 0); /* Check the internal state */
/* Split tests */
/* Split read */
RTTestISub("Split read");
RTCircBufAcquireReadBlock(pBuf, 7, &pvBuf, &cbSize);
RTTESTI_CHECK(cbSize == 5);
RTTESTI_CHECK(memcmp(pvBuf, &achTestPattern1[5], 5) == 0);
RTCircBufReleaseReadBlock(pBuf, 5);
RTTESTI_CHECK(RTCircBufFree(pBuf) == 8);
RTTESTI_CHECK(RTCircBufUsed(pBuf) == 2);
RTCircBufAcquireReadBlock(pBuf, 2, &pvBuf, &cbSize);
RTTESTI_CHECK(cbSize == 2);
RTTESTI_CHECK(memcmp(pvBuf, &achTestPattern1[8], 2) == 0);
RTCircBufReleaseReadBlock(pBuf, 2);
RTTESTI_CHECK(RTCircBufFree(pBuf) == 10);
RTTESTI_CHECK(RTCircBufUsed(pBuf) == 0);
/* Split write */
RTTestISub("Split write");
RTCircBufAcquireWriteBlock(pBuf, 10, &pvBuf, &cbSize);
RTTESTI_CHECK(cbSize == 8);
memcpy(pvBuf, achTestPattern1, 8);
RTCircBufReleaseWriteBlock(pBuf, 8);
RTTESTI_CHECK(RTCircBufFree(pBuf) == 2);
RTTESTI_CHECK(RTCircBufUsed(pBuf) == 8);
RTCircBufAcquireWriteBlock(pBuf, 2, &pvBuf, &cbSize);
RTTESTI_CHECK(cbSize == 2);
memcpy(pvBuf, &achTestPattern1[5], 2);
RTCircBufReleaseWriteBlock(pBuf, 2);
RTTESTI_CHECK(RTCircBufFree(pBuf) == 0);
RTTESTI_CHECK(RTCircBufUsed(pBuf) == 10);
// RTTESTI_CHECK(memcmp(pBuf->pvBuf, achTestPattern3, 10) == 0); /* Check the internal state */
/* Destroy */
RTCircBufDestroy(pBuf);
}
int main()
{
RTTEST hTest;
int rc = RTTestInitAndCreate("tstRTCircBuf", &hTest);
if (rc)
return rc;
RTTestBanner(hTest);
tst1();
return RTTestSummaryAndDestroy(hTest);
}
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