ad37f24d57
These helpers copy the source bitmap to destination bitmap with a shift either on the src or dst bitmap. Meanwhile, we never have bitmap tests but we should. This patch also introduces the initial test cases for utils/bitmap.c but it only tests the newly introduced functions. Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20190603065056.25211-5-peterx@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> --- Bitmap test used sizeof(unsigned long) instead of BITS_PER_LONG.
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* Bitmap.c unit-tests.
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*
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* Copyright (C) 2019, Red Hat, Inc.
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*
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* Author: Peter Xu <peterx@redhat.com>
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*/
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#include <stdlib.h>
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#include "qemu/osdep.h"
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#include "qemu/bitmap.h"
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#define BMAP_SIZE 1024
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static void check_bitmap_copy_with_offset(void)
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{
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unsigned long *bmap1, *bmap2, *bmap3, total;
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bmap1 = bitmap_new(BMAP_SIZE);
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bmap2 = bitmap_new(BMAP_SIZE);
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bmap3 = bitmap_new(BMAP_SIZE);
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bmap1[0] = random();
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bmap1[1] = random();
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bmap1[2] = random();
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bmap1[3] = random();
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total = BITS_PER_LONG * 4;
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/* Shift 115 bits into bmap2 */
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bitmap_copy_with_dst_offset(bmap2, bmap1, 115, total);
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/* Shift another 85 bits into bmap3 */
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bitmap_copy_with_dst_offset(bmap3, bmap2, 85, total + 115);
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/* Shift back 200 bits back */
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bitmap_copy_with_src_offset(bmap2, bmap3, 200, total);
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g_assert_cmpmem(bmap1, total / BITS_PER_LONG,
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bmap2, total / BITS_PER_LONG);
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bitmap_clear(bmap1, 0, BMAP_SIZE);
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/* Set bits in bmap1 are 100-245 */
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bitmap_set(bmap1, 100, 145);
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/* Set bits in bmap2 are 60-205 */
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bitmap_copy_with_src_offset(bmap2, bmap1, 40, 250);
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g_assert_cmpint(find_first_bit(bmap2, 60), ==, 60);
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g_assert_cmpint(find_next_zero_bit(bmap2, 205, 60), ==, 205);
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g_assert(test_bit(205, bmap2) == 0);
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/* Set bits in bmap3 are 135-280 */
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bitmap_copy_with_dst_offset(bmap3, bmap1, 35, 250);
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g_assert_cmpint(find_first_bit(bmap3, 135), ==, 135);
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g_assert_cmpint(find_next_zero_bit(bmap3, 280, 135), ==, 280);
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g_assert(test_bit(280, bmap3) == 0);
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g_free(bmap1);
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g_free(bmap2);
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g_free(bmap3);
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}
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int main(int argc, char **argv)
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{
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g_test_init(&argc, &argv, NULL);
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g_test_add_func("/bitmap/bitmap_copy_with_offset",
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check_bitmap_copy_with_offset);
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g_test_run();
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return 0;
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}
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