VirtualBox

source: vbox/trunk/src/VBox/Runtime/testcase/tstRTCircBuf.cpp@ 70314

Last change on this file since 70314 was 69111, checked in by vboxsync, 7 years ago

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1/* $Id: tstRTCircBuf.cpp 69111 2017-10-17 14:26:02Z vboxsync $ */
2/** @file
3 * IPRT Testcase - Lock free circular buffers.
4 */
5
6/*
7 * Copyright (C) 2010-2017 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27
28/*********************************************************************************************************************************
29* Header Files *
30*********************************************************************************************************************************/
31#include <iprt/circbuf.h>
32
33#include <iprt/err.h>
34#include <iprt/string.h>
35#include <iprt/test.h>
36
37
38/**
39 * Basic API checks.
40 */
41static void tst1(void)
42{
43 void *pvBuf;
44 size_t cbSize;
45
46 char achTestPattern1[] = { 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9 };
47// char achTestPattern2[] = { 0x8, 0x9, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9 };
48// char achTestPattern3[] = { 0x5, 0x6, 0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7 };
49
50 /* Create */
51 RTTestISub("Creation");
52 PRTCIRCBUF pBuf;
53 RTTESTI_CHECK_RC(RTCircBufCreate(&pBuf, 10), VINF_SUCCESS);
54 RTTESTI_CHECK(RTCircBufFree(pBuf) == 10);
55 RTTESTI_CHECK(RTCircBufUsed(pBuf) == 0);
56
57 /* Full write */
58 RTTestISub("Full write");
59 RTCircBufAcquireWriteBlock(pBuf, 10, &pvBuf, &cbSize);
60 RTTESTI_CHECK(cbSize == 10);
61 memcpy(pvBuf, achTestPattern1, 10);
62 RTCircBufReleaseWriteBlock(pBuf, 10);
63 RTTESTI_CHECK(RTCircBufFree(pBuf) == 0);
64 RTTESTI_CHECK(RTCircBufUsed(pBuf) == 10);
65// RTTESTI_CHECK(memcmp(pBuf->pvBuf, achTestPattern1, 10) == 0); /* Check the internal state */
66
67 /* Half read */
68 RTTestISub("Half read");
69 RTCircBufAcquireReadBlock(pBuf, 5, &pvBuf, &cbSize);
70 RTTESTI_CHECK(cbSize == 5);
71 RTTESTI_CHECK(memcmp(pvBuf, achTestPattern1, 5) == 0);
72 RTCircBufReleaseReadBlock(pBuf, 5);
73 RTTESTI_CHECK(RTCircBufFree(pBuf) == 5);
74 RTTESTI_CHECK(RTCircBufUsed(pBuf) == 5);
75
76 /* Sub write */
77 RTTestISub("Sub write");
78 RTCircBufAcquireWriteBlock(pBuf, 2, &pvBuf, &cbSize);
79 RTTESTI_CHECK(cbSize == 2);
80 memcpy(pvBuf, &achTestPattern1[8], 2);
81 RTCircBufReleaseWriteBlock(pBuf, 2);
82 RTTESTI_CHECK(RTCircBufFree(pBuf) == 3);
83 RTTESTI_CHECK(RTCircBufUsed(pBuf) == 7);
84// RTTESTI_CHECK(memcmp(pBuf->pvBuf, achTestPattern2, 10) == 0); /* Check the internal state */
85
86 /* Split tests */
87 /* Split read */
88 RTTestISub("Split read");
89 RTCircBufAcquireReadBlock(pBuf, 7, &pvBuf, &cbSize);
90 RTTESTI_CHECK(cbSize == 5);
91 RTTESTI_CHECK(memcmp(pvBuf, &achTestPattern1[5], 5) == 0);
92 RTCircBufReleaseReadBlock(pBuf, 5);
93 RTTESTI_CHECK(RTCircBufFree(pBuf) == 8);
94 RTTESTI_CHECK(RTCircBufUsed(pBuf) == 2);
95 RTCircBufAcquireReadBlock(pBuf, 2, &pvBuf, &cbSize);
96 RTTESTI_CHECK(cbSize == 2);
97 RTTESTI_CHECK(memcmp(pvBuf, &achTestPattern1[8], 2) == 0);
98 RTCircBufReleaseReadBlock(pBuf, 2);
99 RTTESTI_CHECK(RTCircBufFree(pBuf) == 10);
100 RTTESTI_CHECK(RTCircBufUsed(pBuf) == 0);
101
102 /* Split write */
103 RTTestISub("Split write");
104 RTCircBufAcquireWriteBlock(pBuf, 10, &pvBuf, &cbSize);
105 RTTESTI_CHECK(cbSize == 8);
106 memcpy(pvBuf, achTestPattern1, 8);
107 RTCircBufReleaseWriteBlock(pBuf, 8);
108 RTTESTI_CHECK(RTCircBufFree(pBuf) == 2);
109 RTTESTI_CHECK(RTCircBufUsed(pBuf) == 8);
110 RTCircBufAcquireWriteBlock(pBuf, 2, &pvBuf, &cbSize);
111 RTTESTI_CHECK(cbSize == 2);
112 memcpy(pvBuf, &achTestPattern1[5], 2);
113 RTCircBufReleaseWriteBlock(pBuf, 2);
114 RTTESTI_CHECK(RTCircBufFree(pBuf) == 0);
115 RTTESTI_CHECK(RTCircBufUsed(pBuf) == 10);
116// RTTESTI_CHECK(memcmp(pBuf->pvBuf, achTestPattern3, 10) == 0); /* Check the internal state */
117
118 /* Destroy */
119 RTCircBufDestroy(pBuf);
120}
121
122
123int main()
124{
125 RTTEST hTest;
126 int rc = RTTestInitAndCreate("tstRTCircBuf", &hTest);
127 if (rc)
128 return rc;
129 RTTestBanner(hTest);
130
131 tst1();
132
133 return RTTestSummaryAndDestroy(hTest);
134}
135
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