tstRTHeapOffset.cpp@ 27721

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1	/* $Id: tstRTHeapOffset.cpp 26012 2010-01-25 15:26:34Z vboxsync $ */
2	/** @file
3	* IPRT Testcase - Offset Based Heap.
4	*/
5
6	/*
7	* Copyright (C) 2006-2009 Sun Microsystems, Inc.
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	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
27	* Clara, CA 95054 USA or visit http://www.sun.com if you need
28	* additional information or have any questions.
29	*/
30
31	/*******************************************************************************
32	* Header Files *
33	*******************************************************************************/
34	#include <iprt/heap.h>
35
36	#include <iprt/assert.h>
37	#include <iprt/err.h>
38	#include <iprt/initterm.h>
39	#include <iprt/log.h>
40	#include <iprt/rand.h>
41	#include <iprt/stream.h>
42	#include <iprt/string.h>
43	#include <iprt/param.h>
44	#include <iprt/test.h>
45	#include <iprt/time.h>
46
47
48	int main(int argc, char *argv[])
49	{
50	/*
51	* Init runtime.
52	*/
53	RTTEST hTest;
54	int rc = RTTestInitAndCreate("tstRTHeapOffset", &hTest);
55	if (rc)
56	return rc;
57	RTTestBanner(hTest);
58
59	/*
60	* Create a heap.
61	*/
62	RTTestSub(hTest, "Basics");
63	static uint8_t s_abMem[128*1024];
64	RTHEAPOFFSET Heap;
65	RTTESTI_CHECK_RC(rc = RTHeapOffsetInit(&Heap, &s_abMem[1], sizeof(s_abMem) - 1), VINF_SUCCESS);
66	if (RT_FAILURE(rc))
67	return RTTestSummaryAndDestroy(hTest);
68
69	/*
70	* Try allocate.
71	*/
72	static struct TstHeapOffsetOps
73	{
74	size_t cb;
75	unsigned uAlignment;
76	void *pvAlloc;
77	unsigned iFreeOrder;
78	} s_aOps[] =
79	{
80	{ 16, 0, NULL, 0 }, // 0
81	{ 16, 4, NULL, 1 },
82	{ 16, 8, NULL, 2 },
83	{ 16, 16, NULL, 5 },
84	{ 16, 32, NULL, 4 },
85	{ 32, 0, NULL, 3 }, // 5
86	{ 31, 0, NULL, 6 },
87	{ 1024, 0, NULL, 8 },
88	{ 1024, 32, NULL, 10 },
89	{ 1024, 32, NULL, 12 },
90	{ PAGE_SIZE, PAGE_SIZE, NULL, 13 }, // 10
91	{ 1024, 32, NULL, 9 },
92	{ PAGE_SIZE, 32, NULL, 11 },
93	{ PAGE_SIZE, PAGE_SIZE, NULL, 14 },
94	{ 16, 0, NULL, 15 },
95	{ 9, 0, NULL, 7 }, // 15
96	{ 16, 0, NULL, 7 },
97	{ 36, 0, NULL, 7 },
98	{ 16, 0, NULL, 7 },
99	{ 12344, 0, NULL, 7 },
100	{ 50, 0, NULL, 7 }, // 20
101	{ 16, 0, NULL, 7 },
102	};
103	uint32_t i;
104	RTHeapOffsetDump(Heap, (PFNRTHEAPOFFSETPRINTF)RTPrintf); /** @todo Add some detail info output with a signature identical to RTPrintf. */
105	size_t cbBefore = RTHeapOffsetGetFreeSize(Heap);
106	static char const s_szFill[] = "01234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
107
108	/* allocate */
109	for (i = 0; i < RT_ELEMENTS(s_aOps); i++)
110	{
111	s_aOps[i].pvAlloc = RTHeapOffsetAlloc(Heap, s_aOps[i].cb, s_aOps[i].uAlignment);
112	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));
113	if (!s_aOps[i].pvAlloc)
114	return RTTestSummaryAndDestroy(hTest);
115
116	memset(s_aOps[i].pvAlloc, s_szFill[i], s_aOps[i].cb);
117	RTTESTI_CHECK_MSG(RT_ALIGN_P(s_aOps[i].pvAlloc, (s_aOps[i].uAlignment ? s_aOps[i].uAlignment : 8)) == s_aOps[i].pvAlloc,
118	("RTHeapOffsetAlloc(%p, %#x, %#x,) -> %p\n", (void *)Heap, s_aOps[i].cb, s_aOps[i].uAlignment, i));
119	if (!s_aOps[i].pvAlloc)
120	return RTTestSummaryAndDestroy(hTest);
121	}
122
123	/* free and allocate the same node again. */
124	for (i = 0; i < RT_ELEMENTS(s_aOps); i++)
125	{
126	if (!s_aOps[i].pvAlloc)
127	continue;
128	//RTPrintf("debug: i=%d pv=%#x cb=%#zx align=%#zx cbReal=%#zx\n", i, s_aOps[i].pvAlloc,
129	// s_aOps[i].cb, s_aOps[i].uAlignment, RTHeapOffsetSize(Heap, s_aOps[i].pvAlloc));
130	size_t cbBeforeSub = RTHeapOffsetGetFreeSize(Heap);
131	RTHeapOffsetFree(Heap, s_aOps[i].pvAlloc);
132	size_t cbAfterSubFree = RTHeapOffsetGetFreeSize(Heap);
133
134	void *pv;
135	pv = RTHeapOffsetAlloc(Heap, s_aOps[i].cb, s_aOps[i].uAlignment);
136	RTTESTI_CHECK_MSG(pv, ("RTHeapOffsetAlloc(%p, %#x, %#x,) -> NULL i=%d\n", (void *)Heap, s_aOps[i].cb, s_aOps[i].uAlignment, i));
137	if (!pv)
138	return RTTestSummaryAndDestroy(hTest);
139	//RTPrintf("debug: i=%d pv=%p cbReal=%#zx cbBeforeSub=%#zx cbAfterSubFree=%#zx cbAfterSubAlloc=%#zx \n", i, pv, RTHeapOffsetSize(Heap, pv),
140	// cbBeforeSub, cbAfterSubFree, RTHeapOffsetGetFreeSize(Heap));
141
142	if (pv != s_aOps[i].pvAlloc)
143	RTTestIPrintf(RTTESTLVL_ALWAYS, "Warning: Free+Alloc returned different address. new=%p old=%p i=%d\n", pv, s_aOps[i].pvAlloc, i);
144	s_aOps[i].pvAlloc = pv;
145	size_t cbAfterSubAlloc = RTHeapOffsetGetFreeSize(Heap);
146	if (cbBeforeSub != cbAfterSubAlloc)
147	{
148	RTTestIPrintf(RTTESTLVL_ALWAYS, "Warning: cbBeforeSub=%#zx cbAfterSubFree=%#zx cbAfterSubAlloc=%#zx. i=%d\n",
149	cbBeforeSub, cbAfterSubFree, cbAfterSubAlloc, i);
150	//return 1; - won't work correctly until we start creating free block instead of donating memory on alignment.
151	}
152	}
153
154	/* make a copy of the heap and the to-be-freed list. */
155	static uint8_t s_abMemCopy[sizeof(s_abMem)];
156	memcpy(s_abMemCopy, s_abMem, sizeof(s_abMem));
157	uintptr_t offDelta = (uintptr_t)&s_abMemCopy[0] - (uintptr_t)&s_abMem[0];
158	RTHEAPOFFSET hHeapCopy = (RTHEAPOFFSET)((uintptr_t)Heap + offDelta);
159	static struct TstHeapOffsetOps s_aOpsCopy[RT_ELEMENTS(s_aOps)];
160	memcpy(&s_aOpsCopy[0], &s_aOps[0], sizeof(s_aOps));
161
162	/* free it in a specific order. */
163	int cFreed = 0;
164	for (i = 0; i < RT_ELEMENTS(s_aOps); i++)
165	{
166	unsigned j;
167	for (j = 0; j < RT_ELEMENTS(s_aOps); j++)
168	{
169	if ( s_aOps[j].iFreeOrder != i
170	\|\| !s_aOps[j].pvAlloc)
171	continue;
172	//RTPrintf("j=%d i=%d free=%d cb=%d pv=%p\n", j, i, RTHeapOffsetGetFreeSize(Heap), s_aOps[j].cb, s_aOps[j].pvAlloc);
173	RTHeapOffsetFree(Heap, s_aOps[j].pvAlloc);
174	s_aOps[j].pvAlloc = NULL;
175	cFreed++;
176	}
177	}
178	RTTESTI_CHECK(cFreed == RT_ELEMENTS(s_aOps));
179	RTTestIPrintf(RTTESTLVL_ALWAYS, "i=done free=%d\n", RTHeapOffsetGetFreeSize(Heap));
180
181	/* check that we're back at the right amount of free memory. */
182	size_t cbAfter = RTHeapOffsetGetFreeSize(Heap);
183	if (cbBefore != cbAfter)
184	{
185	RTTestIPrintf(RTTESTLVL_ALWAYS,
186	"Warning: Either we've split out an alignment chunk at the start, or we've got\n"
187	" an alloc/free accounting bug: cbBefore=%d cbAfter=%d\n", cbBefore, cbAfter);
188	RTHeapOffsetDump(Heap, (PFNRTHEAPOFFSETPRINTF)RTPrintf);
189	}
190
191	/* relocate and free the bits in heap2 now. */
192	RTTestSub(hTest, "Relocated Heap");
193	/* free it in a specific order. */
194	int cFreed2 = 0;
195	for (i = 0; i < RT_ELEMENTS(s_aOpsCopy); i++)
196	{
197	unsigned j;
198	for (j = 0; j < RT_ELEMENTS(s_aOpsCopy); j++)
199	{
200	if ( s_aOpsCopy[j].iFreeOrder != i
201	\|\| !s_aOpsCopy[j].pvAlloc)
202	continue;
203	//RTPrintf("j=%d i=%d free=%d cb=%d pv=%p\n", j, i, RTHeapOffsetGetFreeSize(hHeapCopy), s_aOpsCopy[j].cb, s_aOpsCopy[j].pvAlloc);
204	RTHeapOffsetFree(hHeapCopy, (uint8_t *)s_aOpsCopy[j].pvAlloc + offDelta);
205	s_aOpsCopy[j].pvAlloc = NULL;
206	cFreed2++;
207	}
208	}
209	RTTESTI_CHECK(cFreed2 == RT_ELEMENTS(s_aOpsCopy));
210
211	/* check that we're back at the right amount of free memory. */
212	size_t cbAfterCopy = RTHeapOffsetGetFreeSize(hHeapCopy);
213	RTTESTI_CHECK_MSG(cbAfterCopy == cbAfter, ("cbAfterCopy=%zu cbAfter=%zu\n", cbAfterCopy, cbAfter));
214
215	/*
216	* Use random allocation pattern
217	*/
218	RTTestSub(hTest, "Random Test");
219	RTTESTI_CHECK_RC(rc = RTHeapOffsetInit(&Heap, &s_abMem[1], sizeof(s_abMem) - 1), VINF_SUCCESS);
220	if (RT_FAILURE(rc))
221	return RTTestSummaryAndDestroy(hTest);
222
223	RTRAND hRand;
224	RTTESTI_CHECK_RC(rc = RTRandAdvCreateParkMiller(&hRand), VINF_SUCCESS);
225	if (RT_FAILURE(rc))
226	return RTTestSummaryAndDestroy(hTest);
227	#if 0
228	RTRandAdvSeed(hRand, 42);
229	#else
230	RTRandAdvSeed(hRand, RTTimeNanoTS());
231	#endif
232
233	static struct
234	{
235	size_t cb;
236	void *pv;
237	} s_aHistory[1536];
238	RT_ZERO(s_aHistory);
239
240	for (unsigned iTest = 0; iTest < 131072; iTest++)
241	{
242	i = RTRandAdvU32Ex(hRand, 0, RT_ELEMENTS(s_aHistory) - 1);
243	if (!s_aHistory[i].pv)
244	{
245	uint32_t uAlignment = 1 << RTRandAdvU32Ex(hRand, 0, 7);
246	s_aHistory[i].cb = RTRandAdvU32Ex(hRand, 9, 1024);
247	s_aHistory[i].pv = RTHeapOffsetAlloc(Heap, s_aHistory[i].cb, uAlignment);
248	if (!s_aHistory[i].pv)
249	{
250	s_aHistory[i].cb = 9;
251	s_aHistory[i].pv = RTHeapOffsetAlloc(Heap, s_aHistory[i].cb, 0);
252	}
253	if (s_aHistory[i].pv)
254	memset(s_aHistory[i].pv, 0xbb, s_aHistory[i].cb);
255	}
256	else
257	{
258	RTHeapOffsetFree(Heap, s_aHistory[i].pv);
259	s_aHistory[i].pv = NULL;
260	}
261
262	if ((iTest % 7777) == 7776)
263	{
264	/* exhaust the heap */
265	for (i = 0; i < RT_ELEMENTS(s_aHistory) && RTHeapOffsetGetFreeSize(Heap) >= 256; i++)
266	if (!s_aHistory[i].pv)
267	{
268	s_aHistory[i].cb = RTRandAdvU32Ex(hRand, 256, 16384);
269	s_aHistory[i].pv = RTHeapOffsetAlloc(Heap, s_aHistory[i].cb, 0);
270	}
271	for (i = 0; i < RT_ELEMENTS(s_aHistory) && RTHeapOffsetGetFreeSize(Heap); i++)
272	{
273	if (!s_aHistory[i].pv)
274	{
275	s_aHistory[i].cb = 1;
276	s_aHistory[i].pv = RTHeapOffsetAlloc(Heap, s_aHistory[i].cb, 1);
277	}
278	if (s_aHistory[i].pv)
279	memset(s_aHistory[i].pv, 0x55, s_aHistory[i].cb);
280	}
281	RTTESTI_CHECK_MSG(RTHeapOffsetGetFreeSize(Heap) == 0, ("%zu\n", RTHeapOffsetGetFreeSize(Heap)));
282	}
283	else if ((iTest % 7777) == 1111)
284	{
285	/* free all */
286	for (i = 0; i < RT_ELEMENTS(s_aHistory); i++)
287	{
288	RTHeapOffsetFree(Heap, s_aHistory[i].pv);
289	s_aHistory[i].pv = NULL;
290	}
291	size_t cbAfterRand = RTHeapOffsetGetFreeSize(Heap);
292	RTTESTI_CHECK_MSG(cbAfterRand == cbAfter, ("cbAfterRand=%zu cbAfter=%zu\n", cbAfterRand, cbAfter));
293	}
294	}
295
296	/* free the rest. */
297	for (i = 0; i < RT_ELEMENTS(s_aHistory); i++)
298	{
299	RTHeapOffsetFree(Heap, s_aHistory[i].pv);
300	s_aHistory[i].pv = NULL;
301	}
302
303	/* check that we're back at the right amount of free memory. */
304	size_t cbAfterRand = RTHeapOffsetGetFreeSize(Heap);
305	RTTESTI_CHECK_MSG(cbAfterRand == cbAfter, ("cbAfterRand=%zu cbAfter=%zu\n", cbAfterRand, cbAfter));
306
307	return RTTestSummaryAndDestroy(hTest);
308	}
309

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source: vbox/trunk/src/VBox/Runtime/testcase/tstRTHeapOffset.cpp@ 27721

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