VirtualBox

source: vbox/trunk/src/VBox/Runtime/testcase/tstRTHeapSimple.cpp@ 93654

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1/* $Id: tstRTHeapSimple.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
2/** @file
3 * IPRT Testcase - Simple Heap.
4 */
5
6/*
7 * Copyright (C) 2006-2022 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/heap.h>
32#include <iprt/initterm.h>
33#include <iprt/errcore.h>
34#include <iprt/stream.h>
35#include <iprt/string.h>
36#include <iprt/param.h>
37#include <iprt/assert.h>
38#include <iprt/log.h>
39#include <iprt/test.h>
40
41
42int main(int argc, char **argv)
43{
44 RT_NOREF_PV(argc); RT_NOREF_PV(argv);
45
46 /*
47 * Init runtime.
48 */
49 RTTEST hTest;
50 int rc = RTTestInitAndCreate("tstRTHeapSimple", &hTest);
51 if (rc)
52 return rc;
53 RTTestBanner(hTest);
54
55 /*
56 * Create a heap.
57 */
58 RTTestSub(hTest, "Basics");
59 static uint8_t s_abMem[128*1024];
60 RTHEAPSIMPLE Heap;
61 RTTESTI_CHECK_RC(rc = RTHeapSimpleInit(&Heap, &s_abMem[1], sizeof(s_abMem) - 1), VINF_SUCCESS);
62 if (RT_FAILURE(rc))
63 return RTTestSummaryAndDestroy(hTest);
64
65 /*
66 * Try allocate.
67 */
68 static struct TstHeapSimpleOps
69 {
70 size_t cb;
71 unsigned uAlignment;
72 void *pvAlloc;
73 unsigned iFreeOrder;
74 } s_aOps[] =
75 {
76 { 16, 0, NULL, 0 }, // 0
77 { 16, 4, NULL, 1 },
78 { 16, 8, NULL, 2 },
79 { 16, 16, NULL, 5 },
80 { 16, 32, NULL, 4 },
81 { 32, 0, NULL, 3 }, // 5
82 { 31, 0, NULL, 6 },
83 { 1024, 0, NULL, 8 },
84 { 1024, 32, NULL, 10 },
85 { 1024, 32, NULL, 12 },
86 { PAGE_SIZE, PAGE_SIZE, NULL, 13 }, // 10
87 { 1024, 32, NULL, 9 },
88 { PAGE_SIZE, 32, NULL, 11 },
89 { PAGE_SIZE, PAGE_SIZE, NULL, 14 },
90 { 16, 0, NULL, 15 },
91 { 9, 0, NULL, 7 }, // 15
92 { 16, 0, NULL, 7 },
93 { 36, 0, NULL, 7 },
94 { 16, 0, NULL, 7 },
95 { 12344, 0, NULL, 7 },
96 { 50, 0, NULL, 7 }, // 20
97 { 16, 0, NULL, 7 },
98 };
99 unsigned i;
100 RTHeapSimpleDump(Heap, (PFNRTHEAPSIMPLEPRINTF)(uintptr_t)RTPrintf); /** @todo Add some detail info output with a signature identical to RTPrintf. */
101 size_t cbBefore = RTHeapSimpleGetFreeSize(Heap);
102 static char szFill[] = "01234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
103
104 /* allocate */
105 for (i = 0; i < RT_ELEMENTS(s_aOps); i++)
106 {
107 s_aOps[i].pvAlloc = RTHeapSimpleAlloc(Heap, s_aOps[i].cb, s_aOps[i].uAlignment);
108 RTTESTI_CHECK_MSG(s_aOps[i].pvAlloc, ("RTHeapSimpleAlloc(%p, %#x, %#x,) -> NULL i=%d\n", (void *)Heap, s_aOps[i].cb, s_aOps[i].uAlignment, i));
109 if (!s_aOps[i].pvAlloc)
110 return RTTestSummaryAndDestroy(hTest);
111
112 memset(s_aOps[i].pvAlloc, szFill[i], s_aOps[i].cb);
113 RTTESTI_CHECK_MSG(RT_ALIGN_P(s_aOps[i].pvAlloc, (s_aOps[i].uAlignment ? s_aOps[i].uAlignment : 8)) == s_aOps[i].pvAlloc,
114 ("RTHeapSimpleAlloc(%p, %#x, %#x,) -> %p\n", (void *)Heap, s_aOps[i].cb, s_aOps[i].uAlignment, i));
115 if (!s_aOps[i].pvAlloc)
116 return RTTestSummaryAndDestroy(hTest);
117 }
118
119 /* free and allocate the same node again. */
120 for (i = 0; i < RT_ELEMENTS(s_aOps); i++)
121 {
122 if (!s_aOps[i].pvAlloc)
123 continue;
124 //RTPrintf("debug: i=%d pv=%#x cb=%#zx align=%#zx cbReal=%#zx\n", i, s_aOps[i].pvAlloc,
125 // s_aOps[i].cb, s_aOps[i].uAlignment, RTHeapSimpleSize(Heap, s_aOps[i].pvAlloc));
126 size_t cbBeforeSub = RTHeapSimpleGetFreeSize(Heap);
127 RTHeapSimpleFree(Heap, s_aOps[i].pvAlloc);
128 size_t cbAfterSubFree = RTHeapSimpleGetFreeSize(Heap);
129
130 void *pv;
131 pv = RTHeapSimpleAlloc(Heap, s_aOps[i].cb, s_aOps[i].uAlignment);
132 RTTESTI_CHECK_MSG(pv, ("RTHeapSimpleAlloc(%p, %#x, %#x,) -> NULL i=%d\n", (void *)Heap, s_aOps[i].cb, s_aOps[i].uAlignment, i));
133 if (!pv)
134 return RTTestSummaryAndDestroy(hTest);
135 //RTPrintf("debug: i=%d pv=%p cbReal=%#zx cbBeforeSub=%#zx cbAfterSubFree=%#zx cbAfterSubAlloc=%#zx \n", i, pv, RTHeapSimpleSize(Heap, pv),
136 // cbBeforeSub, cbAfterSubFree, RTHeapSimpleGetFreeSize(Heap));
137 if (pv != s_aOps[i].pvAlloc)
138 RTTestIPrintf(RTTESTLVL_ALWAYS, "Warning: Free+Alloc returned different address. new=%p old=%p i=%d\n", pv, s_aOps[i].pvAlloc, i);
139 s_aOps[i].pvAlloc = pv;
140 size_t cbAfterSubAlloc = RTHeapSimpleGetFreeSize(Heap);
141 if (cbBeforeSub != cbAfterSubAlloc)
142 {
143 RTTestIPrintf(RTTESTLVL_ALWAYS, "Warning: cbBeforeSub=%#zx cbAfterSubFree=%#zx cbAfterSubAlloc=%#zx. i=%d\n",
144 cbBeforeSub, cbAfterSubFree, cbAfterSubAlloc, i);
145 //return 1; - won't work correctly until we start creating free block instead of donating memory on alignment.
146 }
147 }
148
149 /* make a copy of the heap and the to-be-freed list. */
150 static uint8_t s_abMemCopy[sizeof(s_abMem)];
151 memcpy(s_abMemCopy, s_abMem, sizeof(s_abMem));
152 uintptr_t offDelta = (uintptr_t)&s_abMemCopy[0] - (uintptr_t)&s_abMem[0];
153 RTHEAPSIMPLE hHeapCopy = (RTHEAPSIMPLE)((uintptr_t)Heap + offDelta);
154 static struct TstHeapSimpleOps s_aOpsCopy[RT_ELEMENTS(s_aOps)];
155 memcpy(&s_aOpsCopy[0], &s_aOps[0], sizeof(s_aOps));
156
157 /* free it in a specific order. */
158 int cFreed = 0;
159 for (i = 0; i < RT_ELEMENTS(s_aOps); i++)
160 {
161 unsigned j;
162 for (j = 0; j < RT_ELEMENTS(s_aOps); j++)
163 {
164 if ( s_aOps[j].iFreeOrder != i
165 || !s_aOps[j].pvAlloc)
166 continue;
167 //RTPrintf("j=%d i=%d free=%d cb=%d pv=%p\n", j, i, RTHeapSimpleGetFreeSize(Heap), s_aOps[j].cb, s_aOps[j].pvAlloc);
168 RTHeapSimpleFree(Heap, s_aOps[j].pvAlloc);
169 s_aOps[j].pvAlloc = NULL;
170 cFreed++;
171 }
172 }
173 RTTESTI_CHECK(cFreed == RT_ELEMENTS(s_aOps));
174 RTTestIPrintf(RTTESTLVL_ALWAYS, "i=done free=%d\n", RTHeapSimpleGetFreeSize(Heap));
175
176 /* check that we're back at the right amount of free memory. */
177 size_t cbAfter = RTHeapSimpleGetFreeSize(Heap);
178 if (cbBefore != cbAfter)
179 {
180 RTTestIPrintf(RTTESTLVL_ALWAYS,
181 "Warning: Either we've split out an alignment chunk at the start, or we've got\n"
182 " an alloc/free accounting bug: cbBefore=%d cbAfter=%d\n", cbBefore, cbAfter);
183 RTHeapSimpleDump(Heap, (PFNRTHEAPSIMPLEPRINTF)(uintptr_t)RTPrintf);
184 }
185
186 /* relocate and free the bits in heap2 now. */
187 RTTestSub(hTest, "RTHeapSimpleRelocate");
188 rc = RTHeapSimpleRelocate(hHeapCopy, offDelta);
189 RTTESTI_CHECK_RC(rc, VINF_SUCCESS);
190 if (RT_SUCCESS(rc))
191 {
192 /* free it in a specific order. */
193 int cFreed2 = 0;
194 for (i = 0; i < RT_ELEMENTS(s_aOpsCopy); i++)
195 {
196 unsigned j;
197 for (j = 0; j < RT_ELEMENTS(s_aOpsCopy); j++)
198 {
199 if ( s_aOpsCopy[j].iFreeOrder != i
200 || !s_aOpsCopy[j].pvAlloc)
201 continue;
202 //RTPrintf("j=%d i=%d free=%d cb=%d pv=%p\n", j, i, RTHeapSimpleGetFreeSize(hHeapCopy), s_aOpsCopy[j].cb, s_aOpsCopy[j].pvAlloc);
203 RTHeapSimpleFree(hHeapCopy, (uint8_t *)s_aOpsCopy[j].pvAlloc + offDelta);
204 s_aOpsCopy[j].pvAlloc = NULL;
205 cFreed2++;
206 }
207 }
208 RTTESTI_CHECK(cFreed2 == RT_ELEMENTS(s_aOpsCopy));
209
210 /* check that we're back at the right amount of free memory. */
211 size_t cbAfterCopy = RTHeapSimpleGetFreeSize(hHeapCopy);
212 RTTESTI_CHECK_MSG(cbAfterCopy == cbAfter, ("cbAfterCopy=%zu cbAfter=%zu\n", cbAfterCopy, cbAfter));
213 }
214
215
216 return RTTestSummaryAndDestroy(hTest);
217}
218
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