tstRTHeapOffset.cpp@ 62477

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(C) 2016
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1	/* $Id: tstRTHeapOffset.cpp 62477 2016-07-22 18:27:37Z vboxsync $ */
2	/** @file
3	* IPRT Testcase - Offset Based Heap.
4	*/
5
6	/*
7	* Copyright (C) 2006-2016 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
33	#include <iprt/assert.h>
34	#include <iprt/err.h>
35	#include <iprt/initterm.h>
36	#include <iprt/log.h>
37	#include <iprt/rand.h>
38	#include <iprt/stream.h>
39	#include <iprt/string.h>
40	#include <iprt/param.h>
41	#include <iprt/test.h>
42	#include <iprt/time.h>
43
44
45	int main(int argc, char *argv[])
46	{
47	/*
48	* Init runtime.
49	*/
50	RTTEST hTest;
51	int rc = RTTestInitAndCreate("tstRTHeapOffset", &hTest);
52	if (rc)
53	return rc;
54	RTTestBanner(hTest);
55
56	/*
57	* Create a heap.
58	*/
59	RTTestSub(hTest, "Basics");
60	static uint8_t s_abMem[128*1024];
61	RTHEAPOFFSET Heap;
62	RTTESTI_CHECK_RC(rc = RTHeapOffsetInit(&Heap, &s_abMem[1], sizeof(s_abMem) - 1), VINF_SUCCESS);
63	if (RT_FAILURE(rc))
64	return RTTestSummaryAndDestroy(hTest);
65
66	/*
67	* Try allocate.
68	*/
69	static struct TstHeapOffsetOps
70	{
71	size_t cb;
72	unsigned uAlignment;
73	void *pvAlloc;
74	unsigned iFreeOrder;
75	} s_aOps[] =
76	{
77	{ 16, 0, NULL, 0 }, // 0
78	{ 16, 4, NULL, 1 },
79	{ 16, 8, NULL, 2 },
80	{ 16, 16, NULL, 5 },
81	{ 16, 32, NULL, 4 },
82	{ 32, 0, NULL, 3 }, // 5
83	{ 31, 0, NULL, 6 },
84	{ 1024, 0, NULL, 8 },
85	{ 1024, 32, NULL, 10 },
86	{ 1024, 32, NULL, 12 },
87	{ PAGE_SIZE, PAGE_SIZE, NULL, 13 }, // 10
88	{ 1024, 32, NULL, 9 },
89	{ PAGE_SIZE, 32, NULL, 11 },
90	{ PAGE_SIZE, PAGE_SIZE, NULL, 14 },
91	{ 16, 0, NULL, 15 },
92	{ 9, 0, NULL, 7 }, // 15
93	{ 16, 0, NULL, 7 },
94	{ 36, 0, NULL, 7 },
95	{ 16, 0, NULL, 7 },
96	{ 12344, 0, NULL, 7 },
97	{ 50, 0, NULL, 7 }, // 20
98	{ 16, 0, NULL, 7 },
99	};
100	uint32_t i;
101	RTHeapOffsetDump(Heap, (PFNRTHEAPOFFSETPRINTF)RTPrintf); /** @todo Add some detail info output with a signature identical to RTPrintf. */
102	size_t cbBefore = RTHeapOffsetGetFreeSize(Heap);
103	static char const s_szFill[] = "01234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
104
105	/* allocate */
106	for (i = 0; i < RT_ELEMENTS(s_aOps); i++)
107	{
108	s_aOps[i].pvAlloc = RTHeapOffsetAlloc(Heap, s_aOps[i].cb, s_aOps[i].uAlignment);
109	RTTESTI_CHECK_MSG(s_aOps[i].pvAlloc, ("RTHeapOffsetAlloc(%p, %#x, %#x,) -> NULL i=%d\n", (void *)Heap, s_aOps[i].cb, s_aOps[i].uAlignment, i));
110	if (!s_aOps[i].pvAlloc)
111	return RTTestSummaryAndDestroy(hTest);
112
113	memset(s_aOps[i].pvAlloc, s_szFill[i], s_aOps[i].cb);
114	RTTESTI_CHECK_MSG(RT_ALIGN_P(s_aOps[i].pvAlloc, (s_aOps[i].uAlignment ? s_aOps[i].uAlignment : 8)) == s_aOps[i].pvAlloc,
115	("RTHeapOffsetAlloc(%p, %#x, %#x,) -> %p\n", (void *)Heap, s_aOps[i].cb, s_aOps[i].uAlignment, i));
116	if (!s_aOps[i].pvAlloc)
117	return RTTestSummaryAndDestroy(hTest);
118	}
119
120	/* free and allocate the same node again. */
121	for (i = 0; i < RT_ELEMENTS(s_aOps); i++)
122	{
123	if (!s_aOps[i].pvAlloc)
124	continue;
125	//RTPrintf("debug: i=%d pv=%#x cb=%#zx align=%#zx cbReal=%#zx\n", i, s_aOps[i].pvAlloc,
126	// s_aOps[i].cb, s_aOps[i].uAlignment, RTHeapOffsetSize(Heap, s_aOps[i].pvAlloc));
127	size_t cbBeforeSub = RTHeapOffsetGetFreeSize(Heap);
128	RTHeapOffsetFree(Heap, s_aOps[i].pvAlloc);
129	size_t cbAfterSubFree = RTHeapOffsetGetFreeSize(Heap);
130
131	void *pv;
132	pv = RTHeapOffsetAlloc(Heap, s_aOps[i].cb, s_aOps[i].uAlignment);
133	RTTESTI_CHECK_MSG(pv, ("RTHeapOffsetAlloc(%p, %#x, %#x,) -> NULL i=%d\n", (void *)Heap, s_aOps[i].cb, s_aOps[i].uAlignment, i));
134	if (!pv)
135	return RTTestSummaryAndDestroy(hTest);
136	//RTPrintf("debug: i=%d pv=%p cbReal=%#zx cbBeforeSub=%#zx cbAfterSubFree=%#zx cbAfterSubAlloc=%#zx \n", i, pv, RTHeapOffsetSize(Heap, pv),
137	// cbBeforeSub, cbAfterSubFree, RTHeapOffsetGetFreeSize(Heap));
138
139	if (pv != s_aOps[i].pvAlloc)
140	RTTestIPrintf(RTTESTLVL_ALWAYS, "Warning: Free+Alloc returned different address. new=%p old=%p i=%d\n", pv, s_aOps[i].pvAlloc, i);
141	s_aOps[i].pvAlloc = pv;
142	size_t cbAfterSubAlloc = RTHeapOffsetGetFreeSize(Heap);
143	if (cbBeforeSub != cbAfterSubAlloc)
144	{
145	RTTestIPrintf(RTTESTLVL_ALWAYS, "Warning: cbBeforeSub=%#zx cbAfterSubFree=%#zx cbAfterSubAlloc=%#zx. i=%d\n",
146	cbBeforeSub, cbAfterSubFree, cbAfterSubAlloc, i);
147	//return 1; - won't work correctly until we start creating free block instead of donating memory on alignment.
148	}
149	}
150
151	/* make a copy of the heap and the to-be-freed list. */
152	static uint8_t s_abMemCopy[sizeof(s_abMem)];
153	memcpy(s_abMemCopy, s_abMem, sizeof(s_abMem));
154	uintptr_t offDelta = (uintptr_t)&s_abMemCopy[0] - (uintptr_t)&s_abMem[0];
155	RTHEAPOFFSET hHeapCopy = (RTHEAPOFFSET)((uintptr_t)Heap + offDelta);
156	static struct TstHeapOffsetOps s_aOpsCopy[RT_ELEMENTS(s_aOps)];
157	memcpy(&s_aOpsCopy[0], &s_aOps[0], sizeof(s_aOps));
158
159	/* free it in a specific order. */
160	int cFreed = 0;
161	for (i = 0; i < RT_ELEMENTS(s_aOps); i++)
162	{
163	unsigned j;
164	for (j = 0; j < RT_ELEMENTS(s_aOps); j++)
165	{
166	if ( s_aOps[j].iFreeOrder != i
167	\|\| !s_aOps[j].pvAlloc)
168	continue;
169	//RTPrintf("j=%d i=%d free=%d cb=%d pv=%p\n", j, i, RTHeapOffsetGetFreeSize(Heap), s_aOps[j].cb, s_aOps[j].pvAlloc);
170	RTHeapOffsetFree(Heap, s_aOps[j].pvAlloc);
171	s_aOps[j].pvAlloc = NULL;
172	cFreed++;
173	}
174	}
175	RTTESTI_CHECK(cFreed == RT_ELEMENTS(s_aOps));
176	RTTestIPrintf(RTTESTLVL_ALWAYS, "i=done free=%d\n", RTHeapOffsetGetFreeSize(Heap));
177
178	/* check that we're back at the right amount of free memory. */
179	size_t cbAfter = RTHeapOffsetGetFreeSize(Heap);
180	if (cbBefore != cbAfter)
181	{
182	RTTestIPrintf(RTTESTLVL_ALWAYS,
183	"Warning: Either we've split out an alignment chunk at the start, or we've got\n"
184	" an alloc/free accounting bug: cbBefore=%d cbAfter=%d\n", cbBefore, cbAfter);
185	RTHeapOffsetDump(Heap, (PFNRTHEAPOFFSETPRINTF)RTPrintf);
186	}
187
188	/* relocate and free the bits in heap2 now. */
189	RTTestSub(hTest, "Relocated Heap");
190	/* free it in a specific order. */
191	int cFreed2 = 0;
192	for (i = 0; i < RT_ELEMENTS(s_aOpsCopy); i++)
193	{
194	unsigned j;
195	for (j = 0; j < RT_ELEMENTS(s_aOpsCopy); j++)
196	{
197	if ( s_aOpsCopy[j].iFreeOrder != i
198	\|\| !s_aOpsCopy[j].pvAlloc)
199	continue;
200	//RTPrintf("j=%d i=%d free=%d cb=%d pv=%p\n", j, i, RTHeapOffsetGetFreeSize(hHeapCopy), s_aOpsCopy[j].cb, s_aOpsCopy[j].pvAlloc);
201	RTHeapOffsetFree(hHeapCopy, (uint8_t *)s_aOpsCopy[j].pvAlloc + offDelta);
202	s_aOpsCopy[j].pvAlloc = NULL;
203	cFreed2++;
204	}
205	}
206	RTTESTI_CHECK(cFreed2 == RT_ELEMENTS(s_aOpsCopy));
207
208	/* check that we're back at the right amount of free memory. */
209	size_t cbAfterCopy = RTHeapOffsetGetFreeSize(hHeapCopy);
210	RTTESTI_CHECK_MSG(cbAfterCopy == cbAfter, ("cbAfterCopy=%zu cbAfter=%zu\n", cbAfterCopy, cbAfter));
211
212	/*
213	* Use random allocation pattern
214	*/
215	RTTestSub(hTest, "Random Test");
216	RTTESTI_CHECK_RC(rc = RTHeapOffsetInit(&Heap, &s_abMem[1], sizeof(s_abMem) - 1), VINF_SUCCESS);
217	if (RT_FAILURE(rc))
218	return RTTestSummaryAndDestroy(hTest);
219
220	RTRAND hRand;
221	RTTESTI_CHECK_RC(rc = RTRandAdvCreateParkMiller(&hRand), VINF_SUCCESS);
222	if (RT_FAILURE(rc))
223	return RTTestSummaryAndDestroy(hTest);
224	#if 0
225	RTRandAdvSeed(hRand, 42);
226	#else
227	RTRandAdvSeed(hRand, RTTimeNanoTS());
228	#endif
229
230	static struct
231	{
232	size_t cb;
233	void *pv;
234	} s_aHistory[1536];
235	RT_ZERO(s_aHistory);
236
237	for (unsigned iTest = 0; iTest < 131072; iTest++)
238	{
239	i = RTRandAdvU32Ex(hRand, 0, RT_ELEMENTS(s_aHistory) - 1);
240	if (!s_aHistory[i].pv)
241	{
242	uint32_t uAlignment = 1 << RTRandAdvU32Ex(hRand, 0, 7);
243	s_aHistory[i].cb = RTRandAdvU32Ex(hRand, 9, 1024);
244	s_aHistory[i].pv = RTHeapOffsetAlloc(Heap, s_aHistory[i].cb, uAlignment);
245	if (!s_aHistory[i].pv)
246	{
247	s_aHistory[i].cb = 9;
248	s_aHistory[i].pv = RTHeapOffsetAlloc(Heap, s_aHistory[i].cb, 0);
249	}
250	if (s_aHistory[i].pv)
251	memset(s_aHistory[i].pv, 0xbb, s_aHistory[i].cb);
252	}
253	else
254	{
255	RTHeapOffsetFree(Heap, s_aHistory[i].pv);
256	s_aHistory[i].pv = NULL;
257	}
258
259	if ((iTest % 7777) == 7776)
260	{
261	/* exhaust the heap */
262	for (i = 0; i < RT_ELEMENTS(s_aHistory) && RTHeapOffsetGetFreeSize(Heap) >= 256; i++)
263	if (!s_aHistory[i].pv)
264	{
265	s_aHistory[i].cb = RTRandAdvU32Ex(hRand, 256, 16384);
266	s_aHistory[i].pv = RTHeapOffsetAlloc(Heap, s_aHistory[i].cb, 0);
267	}
268	for (i = 0; i < RT_ELEMENTS(s_aHistory) && RTHeapOffsetGetFreeSize(Heap); i++)
269	{
270	if (!s_aHistory[i].pv)
271	{
272	s_aHistory[i].cb = 1;
273	s_aHistory[i].pv = RTHeapOffsetAlloc(Heap, s_aHistory[i].cb, 1);
274	}
275	if (s_aHistory[i].pv)
276	memset(s_aHistory[i].pv, 0x55, s_aHistory[i].cb);
277	}
278	RTTESTI_CHECK_MSG(RTHeapOffsetGetFreeSize(Heap) == 0, ("%zu\n", RTHeapOffsetGetFreeSize(Heap)));
279	}
280	else if ((iTest % 7777) == 1111)
281	{
282	/* free all */
283	for (i = 0; i < RT_ELEMENTS(s_aHistory); i++)
284	{
285	RTHeapOffsetFree(Heap, s_aHistory[i].pv);
286	s_aHistory[i].pv = NULL;
287	}
288	size_t cbAfterRand = RTHeapOffsetGetFreeSize(Heap);
289	RTTESTI_CHECK_MSG(cbAfterRand == cbAfter, ("cbAfterRand=%zu cbAfter=%zu\n", cbAfterRand, cbAfter));
290	}
291	}
292
293	/* free the rest. */
294	for (i = 0; i < RT_ELEMENTS(s_aHistory); i++)
295	{
296	RTHeapOffsetFree(Heap, s_aHistory[i].pv);
297	s_aHistory[i].pv = NULL;
298	}
299
300	/* check that we're back at the right amount of free memory. */
301	size_t cbAfterRand = RTHeapOffsetGetFreeSize(Heap);
302	RTTESTI_CHECK_MSG(cbAfterRand == cbAfter, ("cbAfterRand=%zu cbAfter=%zu\n", cbAfterRand, cbAfter));
303
304	return RTTestSummaryAndDestroy(hTest);
305	}
306

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source: vbox/trunk/src/VBox/Runtime/testcase/tstRTHeapOffset.cpp@ 62477

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