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0711c4b74d
Sometimes it's handy to know how many bits are set. * src/util/bitmap.h (virBitmapCountBits): New prototype. (virBitmapNextSetBit): Use correct type. * src/util/bitmap.c (virBitmapNextSetBit): Likewise. (virBitmapSetAll): Maintain invariant of clear tail bits. (virBitmapCountBits): New function. * src/libvirt_private.syms (bitmap.h): Export it. * tests/virbitmaptest.c (test2): Test it.
373 lines
7.7 KiB
C
373 lines
7.7 KiB
C
/*
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* Copyright (C) 2012 Fujitsu.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*/
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#include <config.h>
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#include "testutils.h"
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#include "bitmap.h"
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static int test1(const void *data ATTRIBUTE_UNUSED)
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{
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virBitmapPtr bitmap;
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int size;
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int bit;
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bool result;
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size = 1024;
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bit = 100;
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bitmap = virBitmapNew(size);
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if (virBitmapSetBit(bitmap, bit) < 0)
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return -1;
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if (virBitmapGetBit(bitmap, bit, &result) < 0)
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return -1;
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if (!result)
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return -1;
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if (virBitmapGetBit(bitmap, bit + 1, &result) < 0)
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return -1;
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if (result)
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return -1;
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return 0;
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}
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static int
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testBit(virBitmapPtr bitmap,
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unsigned int start,
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unsigned int end,
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bool expected)
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{
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int i;
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bool result;
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for (i = start; i <= end; i++) {
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if (virBitmapGetBit(bitmap, i, &result) < 0)
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return -1;
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if (result == expected)
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return 0;
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}
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return -1;
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}
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static int test2(const void *data ATTRIBUTE_UNUSED)
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{
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const char *bitsString1 = "1-32,50,88-99,1021-1023";
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char *bitsString2 = NULL;
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virBitmapPtr bitmap = NULL;
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int ret = -1;
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int size = 1025;
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if (virBitmapParse(bitsString1, 0, &bitmap, size) < 0)
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goto error;
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if (testBit(bitmap, 1, 32, true) < 0)
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goto error;
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if (testBit(bitmap, 50, 50, true) < 0)
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goto error;
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if (testBit(bitmap, 88, 99, true) < 0)
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goto error;
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if (testBit(bitmap, 1021, 1023, true) < 0)
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goto error;
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if (testBit(bitmap, 0, 0, false) < 0)
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goto error;
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if (testBit(bitmap, 33, 49, false) < 0)
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goto error;
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if (testBit(bitmap, 51, 87, false) < 0)
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goto error;
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if (testBit(bitmap, 100, 1020, false) < 0)
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goto error;
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if (virBitmapCountBits(bitmap) != 48)
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goto error;
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bitsString2 = virBitmapFormat(bitmap);
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if (strcmp(bitsString1, bitsString2))
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goto error;
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virBitmapSetAll(bitmap);
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if (testBit(bitmap, 0, size - 1, true) < 0)
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goto error;
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if (virBitmapCountBits(bitmap) != size)
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goto error;
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if (!virBitmapIsAllSet(bitmap))
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goto error;
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virBitmapClearAll(bitmap);
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if (testBit(bitmap, 0, size - 1, false) < 0)
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goto error;
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if (virBitmapCountBits(bitmap) != 0)
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goto error;
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ret = 0;
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error:
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virBitmapFree(bitmap);
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VIR_FREE(bitsString2);
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return ret;
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}
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static int test3(const void *data ATTRIBUTE_UNUSED)
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{
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virBitmapPtr bitmap = NULL;
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int ret = -1;
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int size = 5;
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int i;
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if ((bitmap = virBitmapNew(size)) == NULL)
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goto error;
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for (i = 0; i < size; i++)
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ignore_value(virBitmapSetBit(bitmap, i));
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if (!virBitmapIsAllSet(bitmap))
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goto error;
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ret = 0;
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error:
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virBitmapFree(bitmap);
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return ret;
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}
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/* test for virBitmapNextSetBit */
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static int test4(const void *data ATTRIBUTE_UNUSED)
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{
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const char *bitsString = "0, 2-4, 6-10, 12, 14-18, 20, 22, 25";
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int size = 40;
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int bitsPos[] = {
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0, 2, 3, 4, 6, 7, 8, 9, 10, 12,
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14, 15, 16, 17, 18, 20, 22, 25
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};
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int npos = 18;
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virBitmapPtr bitmap = NULL;
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int i, j;
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/* 1. zero set */
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bitmap = virBitmapNew(size);
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if (!bitmap)
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goto error;
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if (virBitmapNextSetBit(bitmap, -1) >= 0)
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goto error;
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virBitmapFree(bitmap);
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bitmap = NULL;
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/* 2. partial set */
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if (virBitmapParse(bitsString, 0, &bitmap, size) < 0)
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goto error;
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if (!bitmap)
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goto error;
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j = 0;
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i = -1;
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while (j < npos) {
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i = virBitmapNextSetBit(bitmap, i);
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if (i != bitsPos[j++])
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goto error;
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}
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if (virBitmapNextSetBit(bitmap, i) > 0)
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goto error;
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/* 3. full set */
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i = -1;
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virBitmapSetAll(bitmap);
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for (j = 0; j < size; j++) {
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i = virBitmapNextSetBit(bitmap, i);
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if (i != j)
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goto error;
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}
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if (virBitmapNextSetBit(bitmap, i) > 0)
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goto error;
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virBitmapFree(bitmap);
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return 0;
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error:
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virBitmapFree(bitmap);
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return -1;
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}
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/* test for virBitmapNewData/ToData */
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static int test5(const void *v ATTRIBUTE_UNUSED)
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{
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char data[] = {0x01, 0x02, 0x00, 0x00, 0x04};
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unsigned char *data2 = NULL;
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int len2;
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int bits[] = {0, 9, 34};
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virBitmapPtr bitmap;
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int i, j;
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int ret = -1;
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bitmap = virBitmapNewData(data, sizeof(data));
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if (!bitmap)
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goto error;
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i = 0;
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j = -1;
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while (i < sizeof(bits)/sizeof(int) &&
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(j = virBitmapNextSetBit(bitmap, j)) >= 0) {
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if (j != bits[i++])
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goto error;
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}
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if (virBitmapNextSetBit(bitmap, j) > 0)
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goto error;
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ignore_value(virBitmapSetBit(bitmap, 2));
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ignore_value(virBitmapSetBit(bitmap, 15));
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if (virBitmapToData(bitmap, &data2, &len2) < 0)
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goto error;
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if (len2 != sizeof(data) ||
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data2[0] != 0x05 ||
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data2[1] != 0x82 ||
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data2[2] != 0x00 ||
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data2[3] != 0x00 ||
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data2[4] != 0x04)
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goto error;
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ret = 0;
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error:
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virBitmapFree(bitmap);
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VIR_FREE(data2);
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return ret;
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}
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/* test for virBitmapFormat */
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static int test6(const void *v ATTRIBUTE_UNUSED)
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{
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virBitmapPtr bitmap = NULL;
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char *str = NULL;
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int size = 64;
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int ret = -1;
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bitmap = virBitmapNew(size);
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if (!bitmap)
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goto error;
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str = virBitmapFormat(bitmap);
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if (!str)
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goto error;
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if (!STREQ(str, ""))
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goto error;
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VIR_FREE(str);
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ignore_value(virBitmapSetBit(bitmap, 0));
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str = virBitmapFormat(bitmap);
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if (!str)
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goto error;
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if (!STREQ(str, "0"))
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goto error;
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VIR_FREE(str);
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ignore_value(virBitmapSetBit(bitmap, 4));
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ignore_value(virBitmapSetBit(bitmap, 5));
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str = virBitmapFormat(bitmap);
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if (!str)
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goto error;
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if (!STREQ(str, "0,4-5"))
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goto error;
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VIR_FREE(str);
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ignore_value(virBitmapSetBit(bitmap, 6));
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str = virBitmapFormat(bitmap);
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if (!str)
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goto error;
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if (!STREQ(str, "0,4-6"))
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goto error;
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VIR_FREE(str);
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ignore_value(virBitmapSetBit(bitmap, 13));
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ignore_value(virBitmapSetBit(bitmap, 14));
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ignore_value(virBitmapSetBit(bitmap, 15));
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ignore_value(virBitmapSetBit(bitmap, 16));
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str = virBitmapFormat(bitmap);
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if (!str)
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goto error;
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if (!STREQ(str, "0,4-6,13-16"))
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goto error;
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VIR_FREE(str);
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ignore_value(virBitmapSetBit(bitmap, 62));
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ignore_value(virBitmapSetBit(bitmap, 63));
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str = virBitmapFormat(bitmap);
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if (!str)
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goto error;
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if (!STREQ(str, "0,4-6,13-16,62-63"))
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goto error;
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ret = 0;
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error:
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virBitmapFree(bitmap);
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VIR_FREE(str);
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return ret;
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}
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static int
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mymain(void)
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{
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int ret = 0;
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if (virtTestRun("test1", 1, test1, NULL) < 0)
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ret = -1;
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if (virtTestRun("test2", 1, test2, NULL) < 0)
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ret = -1;
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if (virtTestRun("test3", 1, test3, NULL) < 0)
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ret = -1;
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if (virtTestRun("test4", 1, test4, NULL) < 0)
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ret = -1;
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if (virtTestRun("test5", 1, test5, NULL) < 0)
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ret = -1;
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if (virtTestRun("test6", 1, test6, NULL) < 0)
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ret = -1;
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return ret;
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}
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VIRT_TEST_MAIN(mymain)
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