VirtualBox

source: vbox/trunk/src/VBox/Runtime/testcase/tstRTBitOperations.cpp@ 19948

Last change on this file since 19948 was 19948, checked in by vboxsync, 15 years ago

tstBitOperations -> tstRTBitOperations
  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 15.3 KB
Line 
1/* $Id: tstRTBitOperations.cpp 19948 2009-05-23 22:14:33Z vboxsync $ */
2/** @file
3 * IPRT Testcase - Inlined Bit Operations.
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/asm.h>
35
36#include <iprt/initterm.h>
37#include <iprt/stream.h>
38#include <iprt/string.h>
39#include <iprt/test.h>
40
41
42/*
43 * Test 2 - ID allocation using a bitmap.
44 */
45
46#define NIL_TEST2_ID 0
47#define TEST2_ID_LAST ((RT_BIT_32(28) - 1) >> 8)
48
49struct TestMap2
50{
51 uint32_t idNil;
52 uint32_t idLast;
53 uint32_t idChunkPrev;
54 uint32_t bmChunkId[(TEST2_ID_LAST + 1 + 31) / 32];
55};
56
57static uint32_t test2AllocId(struct TestMap2 *p2)
58{
59 /*
60 * Scan sequentially from the last one + 1.
61 */
62 int32_t idChunk = ++p2->idChunkPrev;
63 if ( (uint32_t)idChunk < TEST2_ID_LAST
64 && idChunk > NIL_TEST2_ID)
65 {
66 idChunk = ASMBitNextClear(&p2->bmChunkId[0], TEST2_ID_LAST + 1, idChunk);
67 if (idChunk > NIL_TEST2_ID)
68 {
69 if (ASMAtomicBitTestAndSet(&p2->bmChunkId[0], idChunk))
70 {
71 RTTestFailed(NIL_RTTEST, "line %d: idChunk=%#x", __LINE__, idChunk);
72 return NIL_TEST2_ID;
73 }
74 return p2->idChunkPrev = idChunk;
75 }
76 }
77
78 /*
79 * Ok, scan from the start.
80 */
81 idChunk = ASMBitFirstClear(&p2->bmChunkId[0], TEST2_ID_LAST + 1);
82 if (idChunk <= NIL_TEST2_ID)
83 {
84 RTTestFailed(NIL_RTTEST, "line %d: idChunk=%#x", __LINE__, idChunk);
85 return NIL_TEST2_ID;
86 }
87 if (ASMAtomicBitTestAndSet(&p2->bmChunkId[0], idChunk))
88 {
89 RTTestFailed(NIL_RTTEST, "line %d: idChunk=%#x", __LINE__, idChunk);
90 return NIL_TEST2_ID;
91 }
92
93 return p2->idChunkPrev = idChunk;
94}
95
96
97static void test2(RTTEST hTest)
98{
99 struct TestMap2 *p2 = (struct TestMap2 *)RTTestGuardedAllocTail(hTest, sizeof(TestMap2));
100 p2->idNil = NIL_TEST2_ID;
101 p2->idLast = TEST2_ID_LAST;
102
103 /* Some simple tests first. */
104 RT_ZERO(p2->bmChunkId);
105 RTTEST_CHECK(hTest, ASMBitFirstSet(&p2->bmChunkId[0], TEST2_ID_LAST + 1) == -1);
106 for (uint32_t iBit = 0; iBit <= TEST2_ID_LAST; iBit++)
107 RTTEST_CHECK(hTest, !ASMBitTest(&p2->bmChunkId[0], iBit));
108
109 memset(&p2->bmChunkId[0], 0xff, sizeof(p2->bmChunkId));
110 RTTEST_CHECK(hTest, ASMBitFirstClear(&p2->bmChunkId[0], TEST2_ID_LAST + 1) == -1);
111 for (uint32_t iBit = 0; iBit <= TEST2_ID_LAST; iBit++)
112 RTTEST_CHECK(hTest, ASMBitTest(&p2->bmChunkId[0], iBit));
113
114 /* The real test. */
115 p2->idChunkPrev = 0;
116 RT_ZERO(p2->bmChunkId);
117 ASMBitSet(p2->bmChunkId, NIL_TEST2_ID);
118 uint32_t cLeft = TEST2_ID_LAST;
119 while (cLeft-- > 0)
120 test2AllocId(p2);
121
122 RTTEST_CHECK(hTest, ASMBitFirstClear(&p2->bmChunkId[0], TEST2_ID_LAST + 1) == -1);
123}
124
125
126int main()
127{
128 /*
129 * Init the runtime and stuff.
130 */
131 RTTEST hTest;
132 if ( RT_FAILURE(RTR3Init())
133 || RT_FAILURE(RTTestCreate("tstRTBitOperations", &hTest)))
134 {
135 RTPrintf("tstRTBitOperations: fatal initialization error\n");
136 return 1;
137 }
138 RTTestBanner(hTest);
139
140 int rcRet = 0;
141 int i;
142 int j;
143 int k;
144
145 /*
146 * Tests
147 */
148 struct TestMap
149 {
150 uint32_t au32[4];
151 };
152#if 0
153 struct TestMap sTest;
154 struct TestMap *p = &sTest;
155#else
156 struct TestMap *p = (struct TestMap *)RTTestGuardedAllocTail(hTest, sizeof(*p));
157#endif
158#define DUMP() RTTestPrintf(hTest, RTTESTLVL_INFO, "au32={%08x,%08x,%08x,%08x}", p->au32[0], p->au32[1], p->au32[2], p->au32[3])
159#define CHECK(expr) do { if (!(expr)) { RTTestFailed(hTest, "line %d: %s", __LINE__, #expr); DUMP(); } CHECK_GUARD(s); } while (0)
160#define CHECK_BIT(expr, b1) do { if (!(expr)) { RTTestFailed(hTest, "line %d, b1=%d: %s", __LINE__, b1, #expr); } CHECK_GUARD(s); } while (0)
161#define CHECK_BIT2(expr, b1, b2) do { if (!(expr)) { RTTestFailed(hTest, "line %d, b1=%d b2=%d: %s", __LINE__, b1, b2, #expr); } CHECK_GUARD(s); } while (0)
162#define CHECK_BIT3(expr, b1, b2, b3) do { if (!(expr)) { RTTestFailed(hTest, "line %d, b1=%d b2=%d b3=%d: %s", __LINE__, b1, b2, b3, #expr); } CHECK_GUARD(s); } while (0)
163
164#define GUARD_MAP(p) do { } while (0)
165#define CHECK_GUARD(p) do { } while (0)
166#define MAP_CLEAR(p) do { RT_ZERO(*(p)); GUARD_MAP(p); } while (0)
167#define MAP_SET(p) do { memset(p, 0xff, sizeof(*(p))); GUARD_MAP(p); } while (0)
168
169 /* self check. */
170 MAP_CLEAR(p);
171 CHECK_GUARD(p);
172
173 /* set */
174 MAP_CLEAR(p);
175 ASMBitSet(&p->au32[0], 0);
176 ASMBitSet(&p->au32[0], 31);
177 ASMBitSet(&p->au32[0], 65);
178 CHECK(p->au32[0] == 0x80000001U);
179 CHECK(p->au32[2] == 0x00000002U);
180 CHECK(ASMBitTestAndSet(&p->au32[0], 0) && p->au32[0] == 0x80000001U);
181 CHECK(!ASMBitTestAndSet(&p->au32[0], 16) && p->au32[0] == 0x80010001U);
182 CHECK(ASMBitTestAndSet(&p->au32[0], 16) && p->au32[0] == 0x80010001U);
183 CHECK(!ASMBitTestAndSet(&p->au32[0], 80) && p->au32[2] == 0x00010002U);
184
185 MAP_CLEAR(p);
186 ASMAtomicBitSet(&p->au32[0], 0);
187 ASMAtomicBitSet(&p->au32[0], 30);
188 ASMAtomicBitSet(&p->au32[0], 64);
189 CHECK(p->au32[0] == 0x40000001U);
190 CHECK(p->au32[2] == 0x00000001U);
191 CHECK(ASMAtomicBitTestAndSet(&p->au32[0], 0) && p->au32[0] == 0x40000001U);
192 CHECK(!ASMAtomicBitTestAndSet(&p->au32[0], 16) && p->au32[0] == 0x40010001U);
193 CHECK(ASMAtomicBitTestAndSet(&p->au32[0], 16) && p->au32[0] == 0x40010001U);
194 CHECK(!ASMAtomicBitTestAndSet(&p->au32[0], 80) && p->au32[2] == 0x00010001U);
195
196 /* clear */
197 MAP_SET(p);
198 ASMBitClear(&p->au32[0], 0);
199 ASMBitClear(&p->au32[0], 31);
200 ASMBitClear(&p->au32[0], 65);
201 CHECK(p->au32[0] == ~0x80000001U);
202 CHECK(p->au32[2] == ~0x00000002U);
203 CHECK(!ASMBitTestAndClear(&p->au32[0], 0) && p->au32[0] == ~0x80000001U);
204 CHECK(ASMBitTestAndClear(&p->au32[0], 16) && p->au32[0] == ~0x80010001U);
205 CHECK(!ASMBitTestAndClear(&p->au32[0], 16) && p->au32[0] == ~0x80010001U);
206 CHECK(ASMBitTestAndClear(&p->au32[0], 80) && p->au32[2] == ~0x00010002U);
207
208 MAP_SET(p);
209 ASMAtomicBitClear(&p->au32[0], 0);
210 ASMAtomicBitClear(&p->au32[0], 30);
211 ASMAtomicBitClear(&p->au32[0], 64);
212 CHECK(p->au32[0] == ~0x40000001U);
213 CHECK(p->au32[2] == ~0x00000001U);
214 CHECK(!ASMAtomicBitTestAndClear(&p->au32[0], 0) && p->au32[0] == ~0x40000001U);
215 CHECK(ASMAtomicBitTestAndClear(&p->au32[0], 16) && p->au32[0] == ~0x40010001U);
216 CHECK(!ASMAtomicBitTestAndClear(&p->au32[0], 16) && p->au32[0] == ~0x40010001U);
217 CHECK(ASMAtomicBitTestAndClear(&p->au32[0], 80) && p->au32[2] == ~0x00010001U);
218
219 /* toggle */
220 MAP_SET(p);
221 ASMBitToggle(&p->au32[0], 0);
222 ASMBitToggle(&p->au32[0], 31);
223 ASMBitToggle(&p->au32[0], 65);
224 ASMBitToggle(&p->au32[0], 47);
225 ASMBitToggle(&p->au32[0], 47);
226 CHECK(p->au32[0] == ~0x80000001U);
227 CHECK(p->au32[2] == ~0x00000002U);
228 CHECK(!ASMBitTestAndToggle(&p->au32[0], 0) && p->au32[0] == ~0x80000000U);
229 CHECK(ASMBitTestAndToggle(&p->au32[0], 0) && p->au32[0] == ~0x80000001U);
230 CHECK(ASMBitTestAndToggle(&p->au32[0], 16) && p->au32[0] == ~0x80010001U);
231 CHECK(!ASMBitTestAndToggle(&p->au32[0], 16) && p->au32[0] == ~0x80000001U);
232 CHECK(ASMBitTestAndToggle(&p->au32[0], 80) && p->au32[2] == ~0x00010002U);
233
234 MAP_SET(p);
235 ASMAtomicBitToggle(&p->au32[0], 0);
236 ASMAtomicBitToggle(&p->au32[0], 30);
237 ASMAtomicBitToggle(&p->au32[0], 64);
238 ASMAtomicBitToggle(&p->au32[0], 47);
239 ASMAtomicBitToggle(&p->au32[0], 47);
240 CHECK(p->au32[0] == ~0x40000001U);
241 CHECK(p->au32[2] == ~0x00000001U);
242 CHECK(!ASMAtomicBitTestAndToggle(&p->au32[0], 0) && p->au32[0] == ~0x40000000U);
243 CHECK(ASMAtomicBitTestAndToggle(&p->au32[0], 0) && p->au32[0] == ~0x40000001U);
244 CHECK(ASMAtomicBitTestAndToggle(&p->au32[0], 16) && p->au32[0] == ~0x40010001U);
245 CHECK(!ASMAtomicBitTestAndToggle(&p->au32[0], 16) && p->au32[0] == ~0x40000001U);
246 CHECK(ASMAtomicBitTestAndToggle(&p->au32[0], 80) && p->au32[2] == ~0x00010001U);
247
248 /* test bit. */
249 for (i = 0; i < 128; i++)
250 {
251 MAP_SET(p);
252 CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
253 ASMBitToggle(&p->au32[0], i);
254 CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);
255 CHECK_BIT(!ASMBitTestAndToggle(&p->au32[0], i), i);
256 CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
257 CHECK_BIT(ASMBitTestAndToggle(&p->au32[0], i), i);
258 CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);
259
260 MAP_SET(p);
261 CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
262 ASMAtomicBitToggle(&p->au32[0], i);
263 CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);
264 CHECK_BIT(!ASMAtomicBitTestAndToggle(&p->au32[0], i), i);
265 CHECK_BIT(ASMBitTest(&p->au32[0], i), i);
266 CHECK_BIT(ASMAtomicBitTestAndToggle(&p->au32[0], i), i);
267 CHECK_BIT(!ASMBitTest(&p->au32[0], i), i);
268 }
269
270 /* bit searching */
271 MAP_SET(p);
272 CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == -1);
273 CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);
274
275 ASMBitClear(&p->au32[0], 1);
276 CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 1);
277 CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);
278
279 MAP_SET(p);
280 ASMBitClear(&p->au32[0], 95);
281 CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 95);
282 CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);
283
284 MAP_SET(p);
285 ASMBitClear(&p->au32[0], 127);
286 CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 127);
287 CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 0);
288 CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 0) == 1);
289 CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 1) == 2);
290 CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 2) == 3);
291
292
293 MAP_SET(p);
294 CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 0) == -1);
295 ASMBitClear(&p->au32[0], 32);
296 CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 32) == -1);
297 ASMBitClear(&p->au32[0], 88);
298 CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 57) == 88);
299
300 MAP_SET(p);
301 ASMBitClear(&p->au32[0], 31);
302 ASMBitClear(&p->au32[0], 57);
303 ASMBitClear(&p->au32[0], 88);
304 ASMBitClear(&p->au32[0], 101);
305 ASMBitClear(&p->au32[0], 126);
306 ASMBitClear(&p->au32[0], 127);
307 CHECK(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == 31);
308 CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 31) == 57);
309 CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 57) == 88);
310 CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 88) == 101);
311 CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 101) == 126);
312 CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 126) == 127);
313 CHECK(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, 127) == -1);
314
315 CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 29) == 30);
316 CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 30) == 32);
317
318 MAP_CLEAR(p);
319 for (i = 1; i < 128; i++)
320 CHECK_BIT(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, i - 1) == i, i);
321 for (i = 0; i < 128; i++)
322 {
323 MAP_SET(p);
324 ASMBitClear(&p->au32[0], i);
325 CHECK_BIT(ASMBitFirstClear(&p->au32[0], sizeof(p->au32) * 8) == i, i);
326 for (j = 0; j < i; j++)
327 CHECK_BIT(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, j) == i, i);
328 for (j = i; j < 128; j++)
329 CHECK_BIT(ASMBitNextClear(&p->au32[0], sizeof(p->au32) * 8, j) == -1, i);
330 }
331
332 /* clear range. */
333 MAP_SET(p);
334 ASMBitClearRange(&p->au32, 0, 128);
335 CHECK(!p->au32[0] && !p->au32[1] && !p->au32[2] && !p->au32[3]);
336 for (i = 0; i < 128; i++)
337 {
338 for (j = i + 1; j <= 128; j++)
339 {
340 MAP_SET(p);
341 ASMBitClearRange(&p->au32, i, j);
342 for (k = 0; k < i; k++)
343 CHECK_BIT3(ASMBitTest(&p->au32[0], k), i, j, k);
344 for (k = i; k < j; k++)
345 CHECK_BIT3(!ASMBitTest(&p->au32[0], k), i, j, k);
346 for (k = j; k < 128; k++)
347 CHECK_BIT3(ASMBitTest(&p->au32[0], k), i, j, k);
348 }
349 }
350
351 /* searching for set bits. */
352 MAP_CLEAR(p);
353 CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == -1);
354
355 ASMBitSet(&p->au32[0], 65);
356 CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 65);
357 CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 65) == -1);
358 for (i = 0; i < 65; i++)
359 CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == 65);
360 for (i = 65; i < 128; i++)
361 CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == -1);
362
363 ASMBitSet(&p->au32[0], 17);
364 CHECK(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == 17);
365 CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, 17) == 65);
366 for (i = 0; i < 16; i++)
367 CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == 17);
368 for (i = 17; i < 65; i++)
369 CHECK(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i) == 65);
370
371 MAP_SET(p);
372 for (i = 1; i < 128; i++)
373 CHECK_BIT(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, i - 1) == i, i);
374 for (i = 0; i < 128; i++)
375 {
376 MAP_CLEAR(p);
377 ASMBitSet(&p->au32[0], i);
378 CHECK_BIT(ASMBitFirstSet(&p->au32[0], sizeof(p->au32) * 8) == i, i);
379 for (j = 0; j < i; j++)
380 CHECK_BIT(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, j) == i, i);
381 for (j = i; j < 128; j++)
382 CHECK_BIT(ASMBitNextSet(&p->au32[0], sizeof(p->au32) * 8, j) == -1, i);
383 }
384
385
386 CHECK(ASMBitLastSetU32(0) == 0);
387 CHECK(ASMBitLastSetU32(1) == 1);
388 CHECK(ASMBitLastSetU32(0x80000000) == 32);
389 CHECK(ASMBitLastSetU32(0xffffffff) == 32);
390 CHECK(ASMBitLastSetU32(RT_BIT(23) | RT_BIT(11)) == 24);
391 for (i = 0; i < 32; i++)
392 CHECK(ASMBitLastSetU32(1 << i) == (unsigned)i + 1);
393
394 CHECK(ASMBitFirstSetU32(0) == 0);
395 CHECK(ASMBitFirstSetU32(1) == 1);
396 CHECK(ASMBitFirstSetU32(0x80000000) == 32);
397 CHECK(ASMBitFirstSetU32(0xffffffff) == 1);
398 CHECK(ASMBitFirstSetU32(RT_BIT(23) | RT_BIT(11)) == 12);
399 for (i = 0; i < 32; i++)
400 CHECK(ASMBitFirstSetU32(1 << i) == (unsigned)i + 1);
401
402 /*
403 * Special tests.
404 */
405 test2(hTest);
406
407 /*
408 * Summary
409 */
410 return RTTestSummaryAndDestroy(hTest);
411}
412
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