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-rw-r--r--tests/unit/test-hbitmap.c1119
1 files changed, 1119 insertions, 0 deletions
diff --git a/tests/unit/test-hbitmap.c b/tests/unit/test-hbitmap.c
new file mode 100644
index 0000000000..b6726cf76b
--- /dev/null
+++ b/tests/unit/test-hbitmap.c
@@ -0,0 +1,1119 @@
+/*
+ * Hierarchical bitmap unit-tests.
+ *
+ * Copyright (C) 2012 Red Hat Inc.
+ *
+ * Author: Paolo Bonzini <pbonzini@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/hbitmap.h"
+#include "qemu/bitmap.h"
+#include "block/block.h"
+
+#define LOG_BITS_PER_LONG (BITS_PER_LONG == 32 ? 5 : 6)
+
+#define L1 BITS_PER_LONG
+#define L2 (BITS_PER_LONG * L1)
+#define L3 (BITS_PER_LONG * L2)
+
+typedef struct TestHBitmapData {
+ HBitmap *hb;
+ unsigned long *bits;
+ size_t size;
+ size_t old_size;
+ int granularity;
+} TestHBitmapData;
+
+
+/* Check that the HBitmap and the shadow bitmap contain the same data,
+ * ignoring the same "first" bits.
+ */
+static void hbitmap_test_check(TestHBitmapData *data,
+ uint64_t first)
+{
+ uint64_t count = 0;
+ size_t pos;
+ int bit;
+ HBitmapIter hbi;
+ int64_t i, next;
+
+ hbitmap_iter_init(&hbi, data->hb, first);
+
+ i = first;
+ for (;;) {
+ next = hbitmap_iter_next(&hbi);
+ if (next < 0) {
+ next = data->size;
+ }
+
+ while (i < next) {
+ pos = i >> LOG_BITS_PER_LONG;
+ bit = i & (BITS_PER_LONG - 1);
+ i++;
+ g_assert_cmpint(data->bits[pos] & (1UL << bit), ==, 0);
+ }
+
+ if (next == data->size) {
+ break;
+ }
+
+ pos = i >> LOG_BITS_PER_LONG;
+ bit = i & (BITS_PER_LONG - 1);
+ i++;
+ count++;
+ g_assert_cmpint(data->bits[pos] & (1UL << bit), !=, 0);
+ }
+
+ if (first == 0) {
+ g_assert_cmpint(count << data->granularity, ==, hbitmap_count(data->hb));
+ }
+}
+
+/* This is provided instead of a test setup function so that the sizes
+ are kept in the test functions (and not in main()) */
+static void hbitmap_test_init(TestHBitmapData *data,
+ uint64_t size, int granularity)
+{
+ size_t n;
+ data->hb = hbitmap_alloc(size, granularity);
+
+ n = DIV_ROUND_UP(size, BITS_PER_LONG);
+ if (n == 0) {
+ n = 1;
+ }
+ data->bits = g_new0(unsigned long, n);
+ data->size = size;
+ data->granularity = granularity;
+ if (size) {
+ hbitmap_test_check(data, 0);
+ }
+}
+
+static inline size_t hbitmap_test_array_size(size_t bits)
+{
+ size_t n = DIV_ROUND_UP(bits, BITS_PER_LONG);
+ return n ? n : 1;
+}
+
+static void hbitmap_test_truncate_impl(TestHBitmapData *data,
+ size_t size)
+{
+ size_t n;
+ size_t m;
+ data->old_size = data->size;
+ data->size = size;
+
+ if (data->size == data->old_size) {
+ return;
+ }
+
+ n = hbitmap_test_array_size(size);
+ m = hbitmap_test_array_size(data->old_size);
+ data->bits = g_realloc(data->bits, sizeof(unsigned long) * n);
+ if (n > m) {
+ memset(&data->bits[m], 0x00, sizeof(unsigned long) * (n - m));
+ }
+
+ /* If we shrink to an uneven multiple of sizeof(unsigned long),
+ * scrub the leftover memory. */
+ if (data->size < data->old_size) {
+ m = size % (sizeof(unsigned long) * 8);
+ if (m) {
+ unsigned long mask = (1ULL << m) - 1;
+ data->bits[n-1] &= mask;
+ }
+ }
+
+ hbitmap_truncate(data->hb, size);
+}
+
+static void hbitmap_test_teardown(TestHBitmapData *data,
+ const void *unused)
+{
+ if (data->hb) {
+ hbitmap_free(data->hb);
+ data->hb = NULL;
+ }
+ g_free(data->bits);
+ data->bits = NULL;
+}
+
+/* Set a range in the HBitmap and in the shadow "simple" bitmap.
+ * The two bitmaps are then tested against each other.
+ */
+static void hbitmap_test_set(TestHBitmapData *data,
+ uint64_t first, uint64_t count)
+{
+ hbitmap_set(data->hb, first, count);
+ while (count-- != 0) {
+ size_t pos = first >> LOG_BITS_PER_LONG;
+ int bit = first & (BITS_PER_LONG - 1);
+ first++;
+
+ data->bits[pos] |= 1UL << bit;
+ }
+
+ if (data->granularity == 0) {
+ hbitmap_test_check(data, 0);
+ }
+}
+
+/* Reset a range in the HBitmap and in the shadow "simple" bitmap.
+ */
+static void hbitmap_test_reset(TestHBitmapData *data,
+ uint64_t first, uint64_t count)
+{
+ hbitmap_reset(data->hb, first, count);
+ while (count-- != 0) {
+ size_t pos = first >> LOG_BITS_PER_LONG;
+ int bit = first & (BITS_PER_LONG - 1);
+ first++;
+
+ data->bits[pos] &= ~(1UL << bit);
+ }
+
+ if (data->granularity == 0) {
+ hbitmap_test_check(data, 0);
+ }
+}
+
+static void hbitmap_test_reset_all(TestHBitmapData *data)
+{
+ size_t n;
+
+ hbitmap_reset_all(data->hb);
+
+ n = DIV_ROUND_UP(data->size, BITS_PER_LONG);
+ if (n == 0) {
+ n = 1;
+ }
+ memset(data->bits, 0, n * sizeof(unsigned long));
+
+ if (data->granularity == 0) {
+ hbitmap_test_check(data, 0);
+ }
+}
+
+static void hbitmap_test_check_get(TestHBitmapData *data)
+{
+ uint64_t count = 0;
+ uint64_t i;
+
+ for (i = 0; i < data->size; i++) {
+ size_t pos = i >> LOG_BITS_PER_LONG;
+ int bit = i & (BITS_PER_LONG - 1);
+ unsigned long val = data->bits[pos] & (1UL << bit);
+ count += hbitmap_get(data->hb, i);
+ g_assert_cmpint(hbitmap_get(data->hb, i), ==, val != 0);
+ }
+ g_assert_cmpint(count, ==, hbitmap_count(data->hb));
+}
+
+static void test_hbitmap_zero(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, 0, 0);
+}
+
+static void test_hbitmap_unaligned(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, L3 + 23, 0);
+ hbitmap_test_set(data, 0, 1);
+ hbitmap_test_set(data, L3 + 22, 1);
+}
+
+static void test_hbitmap_iter_empty(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, L1, 0);
+}
+
+static void test_hbitmap_iter_partial(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, L3, 0);
+ hbitmap_test_set(data, 0, L3);
+ hbitmap_test_check(data, 1);
+ hbitmap_test_check(data, L1 - 1);
+ hbitmap_test_check(data, L1);
+ hbitmap_test_check(data, L1 * 2 - 1);
+ hbitmap_test_check(data, L2 - 1);
+ hbitmap_test_check(data, L2);
+ hbitmap_test_check(data, L2 + 1);
+ hbitmap_test_check(data, L2 + L1);
+ hbitmap_test_check(data, L2 + L1 * 2 - 1);
+ hbitmap_test_check(data, L2 * 2 - 1);
+ hbitmap_test_check(data, L2 * 2);
+ hbitmap_test_check(data, L2 * 2 + 1);
+ hbitmap_test_check(data, L2 * 2 + L1);
+ hbitmap_test_check(data, L2 * 2 + L1 * 2 - 1);
+ hbitmap_test_check(data, L3 / 2);
+}
+
+static void test_hbitmap_set_all(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, L3, 0);
+ hbitmap_test_set(data, 0, L3);
+}
+
+static void test_hbitmap_get_all(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, L3, 0);
+ hbitmap_test_set(data, 0, L3);
+ hbitmap_test_check_get(data);
+}
+
+static void test_hbitmap_get_some(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, 2 * L2, 0);
+ hbitmap_test_set(data, 10, 1);
+ hbitmap_test_check_get(data);
+ hbitmap_test_set(data, L1 - 1, 1);
+ hbitmap_test_check_get(data);
+ hbitmap_test_set(data, L1, 1);
+ hbitmap_test_check_get(data);
+ hbitmap_test_set(data, L2 - 1, 1);
+ hbitmap_test_check_get(data);
+ hbitmap_test_set(data, L2, 1);
+ hbitmap_test_check_get(data);
+}
+
+static void test_hbitmap_set_one(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, 2 * L2, 0);
+ hbitmap_test_set(data, 10, 1);
+ hbitmap_test_set(data, L1 - 1, 1);
+ hbitmap_test_set(data, L1, 1);
+ hbitmap_test_set(data, L2 - 1, 1);
+ hbitmap_test_set(data, L2, 1);
+}
+
+static void test_hbitmap_set_two_elem(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, 2 * L2, 0);
+ hbitmap_test_set(data, L1 - 1, 2);
+ hbitmap_test_set(data, L1 * 2 - 1, 4);
+ hbitmap_test_set(data, L1 * 4, L1 + 1);
+ hbitmap_test_set(data, L1 * 8 - 1, L1 + 1);
+ hbitmap_test_set(data, L2 - 1, 2);
+ hbitmap_test_set(data, L2 + L1 - 1, 8);
+ hbitmap_test_set(data, L2 + L1 * 4, L1 + 1);
+ hbitmap_test_set(data, L2 + L1 * 8 - 1, L1 + 1);
+}
+
+static void test_hbitmap_set(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, L3 * 2, 0);
+ hbitmap_test_set(data, L1 - 1, L1 + 2);
+ hbitmap_test_set(data, L1 * 3 - 1, L1 + 2);
+ hbitmap_test_set(data, L1 * 5, L1 * 2 + 1);
+ hbitmap_test_set(data, L1 * 8 - 1, L1 * 2 + 1);
+ hbitmap_test_set(data, L2 - 1, L1 + 2);
+ hbitmap_test_set(data, L2 + L1 * 2 - 1, L1 + 2);
+ hbitmap_test_set(data, L2 + L1 * 4, L1 * 2 + 1);
+ hbitmap_test_set(data, L2 + L1 * 7 - 1, L1 * 2 + 1);
+ hbitmap_test_set(data, L2 * 2 - 1, L3 * 2 - L2 * 2);
+}
+
+static void test_hbitmap_set_twice(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, L1 * 3, 0);
+ hbitmap_test_set(data, 0, L1 * 3);
+ hbitmap_test_set(data, L1, 1);
+}
+
+static void test_hbitmap_set_overlap(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, L3 * 2, 0);
+ hbitmap_test_set(data, L1 - 1, L1 + 2);
+ hbitmap_test_set(data, L1 * 2 - 1, L1 * 2 + 2);
+ hbitmap_test_set(data, 0, L1 * 3);
+ hbitmap_test_set(data, L1 * 8 - 1, L2);
+ hbitmap_test_set(data, L2, L1);
+ hbitmap_test_set(data, L2 - L1 - 1, L1 * 8 + 2);
+ hbitmap_test_set(data, L2, L3 - L2 + 1);
+ hbitmap_test_set(data, L3 - L1, L1 * 3);
+ hbitmap_test_set(data, L3 - 1, 3);
+ hbitmap_test_set(data, L3 - 1, L2);
+}
+
+static void test_hbitmap_reset_empty(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, L3, 0);
+ hbitmap_test_reset(data, 0, L3);
+}
+
+static void test_hbitmap_reset(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, L3 * 2, 0);
+ hbitmap_test_set(data, L1 - 1, L1 + 2);
+ hbitmap_test_reset(data, L1 * 2 - 1, L1 * 2 + 2);
+ hbitmap_test_set(data, 0, L1 * 3);
+ hbitmap_test_reset(data, L1 * 8 - 1, L2);
+ hbitmap_test_set(data, L2, L1);
+ hbitmap_test_reset(data, L2 - L1 - 1, L1 * 8 + 2);
+ hbitmap_test_set(data, L2, L3 - L2 + 1);
+ hbitmap_test_reset(data, L3 - L1, L1 * 3);
+ hbitmap_test_set(data, L3 - 1, 3);
+ hbitmap_test_reset(data, L3 - 1, L2);
+ hbitmap_test_set(data, 0, L3 * 2);
+ hbitmap_test_reset(data, 0, L1);
+ hbitmap_test_reset(data, 0, L2);
+ hbitmap_test_reset(data, L3, L3);
+ hbitmap_test_set(data, L3 / 2, L3);
+}
+
+static void test_hbitmap_reset_all(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, L3 * 2, 0);
+ hbitmap_test_set(data, L1 - 1, L1 + 2);
+ hbitmap_test_reset_all(data);
+ hbitmap_test_set(data, 0, L1 * 3);
+ hbitmap_test_reset_all(data);
+ hbitmap_test_set(data, L2, L1);
+ hbitmap_test_reset_all(data);
+ hbitmap_test_set(data, L2, L3 - L2 + 1);
+ hbitmap_test_reset_all(data);
+ hbitmap_test_set(data, L3 - 1, 3);
+ hbitmap_test_reset_all(data);
+ hbitmap_test_set(data, 0, L3 * 2);
+ hbitmap_test_reset_all(data);
+ hbitmap_test_set(data, L3 / 2, L3);
+ hbitmap_test_reset_all(data);
+}
+
+static void test_hbitmap_granularity(TestHBitmapData *data,
+ const void *unused)
+{
+ /* Note that hbitmap_test_check has to be invoked manually in this test. */
+ hbitmap_test_init(data, L1, 1);
+ hbitmap_test_set(data, 0, 1);
+ g_assert_cmpint(hbitmap_count(data->hb), ==, 2);
+ hbitmap_test_check(data, 0);
+ hbitmap_test_set(data, 2, 1);
+ g_assert_cmpint(hbitmap_count(data->hb), ==, 4);
+ hbitmap_test_check(data, 0);
+ hbitmap_test_set(data, 0, 3);
+ g_assert_cmpint(hbitmap_count(data->hb), ==, 4);
+ hbitmap_test_reset(data, 0, 2);
+ g_assert_cmpint(hbitmap_count(data->hb), ==, 2);
+}
+
+static void test_hbitmap_iter_granularity(TestHBitmapData *data,
+ const void *unused)
+{
+ HBitmapIter hbi;
+
+ /* Note that hbitmap_test_check has to be invoked manually in this test. */
+ hbitmap_test_init(data, 131072 << 7, 7);
+ hbitmap_iter_init(&hbi, data->hb, 0);
+ g_assert_cmpint(hbitmap_iter_next(&hbi), <, 0);
+
+ hbitmap_test_set(data, ((L2 + L1 + 1) << 7) + 8, 8);
+ hbitmap_iter_init(&hbi, data->hb, 0);
+ g_assert_cmpint(hbitmap_iter_next(&hbi), ==, (L2 + L1 + 1) << 7);
+ g_assert_cmpint(hbitmap_iter_next(&hbi), <, 0);
+
+ hbitmap_iter_init(&hbi, data->hb, (L2 + L1 + 2) << 7);
+ g_assert_cmpint(hbitmap_iter_next(&hbi), <, 0);
+
+ hbitmap_test_set(data, (131072 << 7) - 8, 8);
+ hbitmap_iter_init(&hbi, data->hb, 0);
+ g_assert_cmpint(hbitmap_iter_next(&hbi), ==, (L2 + L1 + 1) << 7);
+ g_assert_cmpint(hbitmap_iter_next(&hbi), ==, 131071 << 7);
+ g_assert_cmpint(hbitmap_iter_next(&hbi), <, 0);
+
+ hbitmap_iter_init(&hbi, data->hb, (L2 + L1 + 2) << 7);
+ g_assert_cmpint(hbitmap_iter_next(&hbi), ==, 131071 << 7);
+ g_assert_cmpint(hbitmap_iter_next(&hbi), <, 0);
+}
+
+static void hbitmap_test_set_boundary_bits(TestHBitmapData *data, ssize_t diff)
+{
+ size_t size = data->size;
+
+ /* First bit */
+ hbitmap_test_set(data, 0, 1);
+ if (diff < 0) {
+ /* Last bit in new, shortened map */
+ hbitmap_test_set(data, size + diff - 1, 1);
+
+ /* First bit to be truncated away */
+ hbitmap_test_set(data, size + diff, 1);
+ }
+ /* Last bit */
+ hbitmap_test_set(data, size - 1, 1);
+ if (data->granularity == 0) {
+ hbitmap_test_check_get(data);
+ }
+}
+
+static void hbitmap_test_check_boundary_bits(TestHBitmapData *data)
+{
+ size_t size = MIN(data->size, data->old_size);
+
+ if (data->granularity == 0) {
+ hbitmap_test_check_get(data);
+ hbitmap_test_check(data, 0);
+ } else {
+ /* If a granularity was set, note that every distinct
+ * (bit >> granularity) value that was set will increase
+ * the bit pop count by 2^granularity, not just 1.
+ *
+ * The hbitmap_test_check facility does not currently tolerate
+ * non-zero granularities, so test the boundaries and the population
+ * count manually.
+ */
+ g_assert(hbitmap_get(data->hb, 0));
+ g_assert(hbitmap_get(data->hb, size - 1));
+ g_assert_cmpint(2 << data->granularity, ==, hbitmap_count(data->hb));
+ }
+}
+
+/* Generic truncate test. */
+static void hbitmap_test_truncate(TestHBitmapData *data,
+ size_t size,
+ ssize_t diff,
+ int granularity)
+{
+ hbitmap_test_init(data, size, granularity);
+ hbitmap_test_set_boundary_bits(data, diff);
+ hbitmap_test_truncate_impl(data, size + diff);
+ hbitmap_test_check_boundary_bits(data);
+}
+
+static void test_hbitmap_truncate_nop(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_truncate(data, L2, 0, 0);
+}
+
+/**
+ * Grow by an amount smaller than the granularity, without crossing
+ * a granularity alignment boundary. Effectively a NOP.
+ */
+static void test_hbitmap_truncate_grow_negligible(TestHBitmapData *data,
+ const void *unused)
+{
+ size_t size = L2 - 1;
+ size_t diff = 1;
+ int granularity = 1;
+
+ hbitmap_test_truncate(data, size, diff, granularity);
+}
+
+/**
+ * Shrink by an amount smaller than the granularity, without crossing
+ * a granularity alignment boundary. Effectively a NOP.
+ */
+static void test_hbitmap_truncate_shrink_negligible(TestHBitmapData *data,
+ const void *unused)
+{
+ size_t size = L2;
+ ssize_t diff = -1;
+ int granularity = 1;
+
+ hbitmap_test_truncate(data, size, diff, granularity);
+}
+
+/**
+ * Grow by an amount smaller than the granularity, but crossing over
+ * a granularity alignment boundary.
+ */
+static void test_hbitmap_truncate_grow_tiny(TestHBitmapData *data,
+ const void *unused)
+{
+ size_t size = L2 - 2;
+ ssize_t diff = 1;
+ int granularity = 1;
+
+ hbitmap_test_truncate(data, size, diff, granularity);
+}
+
+/**
+ * Shrink by an amount smaller than the granularity, but crossing over
+ * a granularity alignment boundary.
+ */
+static void test_hbitmap_truncate_shrink_tiny(TestHBitmapData *data,
+ const void *unused)
+{
+ size_t size = L2 - 1;
+ ssize_t diff = -1;
+ int granularity = 1;
+
+ hbitmap_test_truncate(data, size, diff, granularity);
+}
+
+/**
+ * Grow by an amount smaller than sizeof(long), and not crossing over
+ * a sizeof(long) alignment boundary.
+ */
+static void test_hbitmap_truncate_grow_small(TestHBitmapData *data,
+ const void *unused)
+{
+ size_t size = L2 + 1;
+ size_t diff = sizeof(long) / 2;
+
+ hbitmap_test_truncate(data, size, diff, 0);
+}
+
+/**
+ * Shrink by an amount smaller than sizeof(long), and not crossing over
+ * a sizeof(long) alignment boundary.
+ */
+static void test_hbitmap_truncate_shrink_small(TestHBitmapData *data,
+ const void *unused)
+{
+ size_t size = L2;
+ size_t diff = sizeof(long) / 2;
+
+ hbitmap_test_truncate(data, size, -diff, 0);
+}
+
+/**
+ * Grow by an amount smaller than sizeof(long), while crossing over
+ * a sizeof(long) alignment boundary.
+ */
+static void test_hbitmap_truncate_grow_medium(TestHBitmapData *data,
+ const void *unused)
+{
+ size_t size = L2 - 1;
+ size_t diff = sizeof(long) / 2;
+
+ hbitmap_test_truncate(data, size, diff, 0);
+}
+
+/**
+ * Shrink by an amount smaller than sizeof(long), while crossing over
+ * a sizeof(long) alignment boundary.
+ */
+static void test_hbitmap_truncate_shrink_medium(TestHBitmapData *data,
+ const void *unused)
+{
+ size_t size = L2 + 1;
+ size_t diff = sizeof(long) / 2;
+
+ hbitmap_test_truncate(data, size, -diff, 0);
+}
+
+/**
+ * Grow by an amount larger than sizeof(long).
+ */
+static void test_hbitmap_truncate_grow_large(TestHBitmapData *data,
+ const void *unused)
+{
+ size_t size = L2;
+ size_t diff = 8 * sizeof(long);
+
+ hbitmap_test_truncate(data, size, diff, 0);
+}
+
+/**
+ * Shrink by an amount larger than sizeof(long).
+ */
+static void test_hbitmap_truncate_shrink_large(TestHBitmapData *data,
+ const void *unused)
+{
+ size_t size = L2;
+ size_t diff = 8 * sizeof(long);
+
+ hbitmap_test_truncate(data, size, -diff, 0);
+}
+
+static void test_hbitmap_serialize_align(TestHBitmapData *data,
+ const void *unused)
+{
+ int r;
+
+ hbitmap_test_init(data, L3 * 2, 3);
+ g_assert(hbitmap_is_serializable(data->hb));
+
+ r = hbitmap_serialization_align(data->hb);
+ g_assert_cmpint(r, ==, 64 << 3);
+}
+
+static void hbitmap_test_serialize_range(TestHBitmapData *data,
+ uint8_t *buf, size_t buf_size,
+ uint64_t pos, uint64_t count)
+{
+ size_t i;
+ unsigned long *el = (unsigned long *)buf;
+
+ assert(hbitmap_granularity(data->hb) == 0);
+ hbitmap_reset_all(data->hb);
+ memset(buf, 0, buf_size);
+ if (count) {
+ hbitmap_set(data->hb, pos, count);
+ }
+
+ g_assert(hbitmap_is_serializable(data->hb));
+ hbitmap_serialize_part(data->hb, buf, 0, data->size);
+
+ /* Serialized buffer is inherently LE, convert it back manually to test */
+ for (i = 0; i < buf_size / sizeof(unsigned long); i++) {
+ el[i] = (BITS_PER_LONG == 32 ? le32_to_cpu(el[i]) : le64_to_cpu(el[i]));
+ }
+
+ for (i = 0; i < data->size; i++) {
+ int is_set = test_bit(i, (unsigned long *)buf);
+ if (i >= pos && i < pos + count) {
+ g_assert(is_set);
+ } else {
+ g_assert(!is_set);
+ }
+ }
+
+ /* Re-serialize for deserialization testing */
+ memset(buf, 0, buf_size);
+ hbitmap_serialize_part(data->hb, buf, 0, data->size);
+ hbitmap_reset_all(data->hb);
+
+ g_assert(hbitmap_is_serializable(data->hb));
+ hbitmap_deserialize_part(data->hb, buf, 0, data->size, true);
+
+ for (i = 0; i < data->size; i++) {
+ int is_set = hbitmap_get(data->hb, i);
+ if (i >= pos && i < pos + count) {
+ g_assert(is_set);
+ } else {
+ g_assert(!is_set);
+ }
+ }
+}
+
+static void test_hbitmap_serialize_basic(TestHBitmapData *data,
+ const void *unused)
+{
+ int i, j;
+ size_t buf_size;
+ uint8_t *buf;
+ uint64_t positions[] = { 0, 1, L1 - 1, L1, L2 - 1, L2, L2 + 1, L3 - 1 };
+ int num_positions = ARRAY_SIZE(positions);
+
+ hbitmap_test_init(data, L3, 0);
+ g_assert(hbitmap_is_serializable(data->hb));
+ buf_size = hbitmap_serialization_size(data->hb, 0, data->size);
+ buf = g_malloc0(buf_size);
+
+ for (i = 0; i < num_positions; i++) {
+ for (j = 0; j < num_positions; j++) {
+ hbitmap_test_serialize_range(data, buf, buf_size,
+ positions[i],
+ MIN(positions[j], L3 - positions[i]));
+ }
+ }
+
+ g_free(buf);
+}
+
+static void test_hbitmap_serialize_part(TestHBitmapData *data,
+ const void *unused)
+{
+ int i, j, k;
+ size_t buf_size;
+ uint8_t *buf;
+ uint64_t positions[] = { 0, 1, L1 - 1, L1, L2 - 1, L2, L2 + 1, L3 - 1 };
+ int num_positions = ARRAY_SIZE(positions);
+
+ hbitmap_test_init(data, L3, 0);
+ buf_size = L2;
+ buf = g_malloc0(buf_size);
+
+ for (i = 0; i < num_positions; i++) {
+ hbitmap_set(data->hb, positions[i], 1);
+ }
+
+ g_assert(hbitmap_is_serializable(data->hb));
+
+ for (i = 0; i < data->size; i += buf_size) {
+ unsigned long *el = (unsigned long *)buf;
+ hbitmap_serialize_part(data->hb, buf, i, buf_size);
+ for (j = 0; j < buf_size / sizeof(unsigned long); j++) {
+ el[j] = (BITS_PER_LONG == 32 ? le32_to_cpu(el[j]) : le64_to_cpu(el[j]));
+ }
+
+ for (j = 0; j < buf_size; j++) {
+ bool should_set = false;
+ for (k = 0; k < num_positions; k++) {
+ if (positions[k] == j + i) {
+ should_set = true;
+ break;
+ }
+ }
+ g_assert_cmpint(should_set, ==, test_bit(j, (unsigned long *)buf));
+ }
+ }
+
+ g_free(buf);
+}
+
+static void test_hbitmap_serialize_zeroes(TestHBitmapData *data,
+ const void *unused)
+{
+ int i;
+ HBitmapIter iter;
+ int64_t next;
+ uint64_t min_l1 = MAX(L1, 64);
+ uint64_t positions[] = { 0, min_l1, L2, L3 - min_l1};
+ int num_positions = ARRAY_SIZE(positions);
+
+ hbitmap_test_init(data, L3, 0);
+
+ for (i = 0; i < num_positions; i++) {
+ hbitmap_set(data->hb, positions[i], L1);
+ }
+
+ g_assert(hbitmap_is_serializable(data->hb));
+
+ for (i = 0; i < num_positions; i++) {
+ hbitmap_deserialize_zeroes(data->hb, positions[i], min_l1, true);
+ hbitmap_iter_init(&iter, data->hb, 0);
+ next = hbitmap_iter_next(&iter);
+ if (i == num_positions - 1) {
+ g_assert_cmpint(next, ==, -1);
+ } else {
+ g_assert_cmpint(next, ==, positions[i + 1]);
+ }
+ }
+}
+
+static void hbitmap_test_add(const char *testpath,
+ void (*test_func)(TestHBitmapData *data, const void *user_data))
+{
+ g_test_add(testpath, TestHBitmapData, NULL, NULL, test_func,
+ hbitmap_test_teardown);
+}
+
+static void test_hbitmap_iter_and_reset(TestHBitmapData *data,
+ const void *unused)
+{
+ HBitmapIter hbi;
+
+ hbitmap_test_init(data, L1 * 2, 0);
+ hbitmap_set(data->hb, 0, data->size);
+
+ hbitmap_iter_init(&hbi, data->hb, BITS_PER_LONG - 1);
+
+ hbitmap_iter_next(&hbi);
+
+ hbitmap_reset_all(data->hb);
+ hbitmap_iter_next(&hbi);
+}
+
+static void test_hbitmap_next_x_check_range(TestHBitmapData *data,
+ int64_t start,
+ int64_t count)
+{
+ int64_t next_zero = hbitmap_next_zero(data->hb, start, count);
+ int64_t next_dirty = hbitmap_next_dirty(data->hb, start, count);
+ int64_t next;
+ int64_t end = start >= data->size || data->size - start < count ?
+ data->size : start + count;
+ bool first_bit = hbitmap_get(data->hb, start);
+
+ for (next = start;
+ next < end && hbitmap_get(data->hb, next) == first_bit;
+ next++)
+ {
+ ;
+ }
+
+ if (next == end) {
+ next = -1;
+ }
+
+ g_assert_cmpint(next_dirty, ==, first_bit ? start : next);
+ g_assert_cmpint(next_zero, ==, first_bit ? next : start);
+}
+
+static void test_hbitmap_next_x_check(TestHBitmapData *data, int64_t start)
+{
+ test_hbitmap_next_x_check_range(data, start, INT64_MAX);
+}
+
+static void test_hbitmap_next_x_do(TestHBitmapData *data, int granularity)
+{
+ hbitmap_test_init(data, L3, granularity);
+ test_hbitmap_next_x_check(data, 0);
+ test_hbitmap_next_x_check(data, L3 - 1);
+ test_hbitmap_next_x_check_range(data, 0, 1);
+ test_hbitmap_next_x_check_range(data, L3 - 1, 1);
+
+ hbitmap_set(data->hb, L2, 1);
+ test_hbitmap_next_x_check(data, 0);
+ test_hbitmap_next_x_check(data, L2 - 1);
+ test_hbitmap_next_x_check(data, L2);
+ test_hbitmap_next_x_check(data, L2 + 1);
+ test_hbitmap_next_x_check_range(data, 0, 1);
+ test_hbitmap_next_x_check_range(data, 0, L2);
+ test_hbitmap_next_x_check_range(data, L2 - 1, 1);
+ test_hbitmap_next_x_check_range(data, L2 - 1, 2);
+ test_hbitmap_next_x_check_range(data, L2, 1);
+ test_hbitmap_next_x_check_range(data, L2 + 1, 1);
+
+ hbitmap_set(data->hb, L2 + 5, L1);
+ test_hbitmap_next_x_check(data, 0);
+ test_hbitmap_next_x_check(data, L2 - L1);
+ test_hbitmap_next_x_check(data, L2 + 1);
+ test_hbitmap_next_x_check(data, L2 + 2);
+ test_hbitmap_next_x_check(data, L2 + 5);
+ test_hbitmap_next_x_check(data, L2 + L1 - 1);
+ test_hbitmap_next_x_check(data, L2 + L1);
+ test_hbitmap_next_x_check(data, L2 + L1 + 1);
+ test_hbitmap_next_x_check_range(data, L2 - 2, L1);
+ test_hbitmap_next_x_check_range(data, L2, 4);
+ test_hbitmap_next_x_check_range(data, L2, 6);
+ test_hbitmap_next_x_check_range(data, L2 + 1, 3);
+ test_hbitmap_next_x_check_range(data, L2 + 4, L1);
+ test_hbitmap_next_x_check_range(data, L2 + 5, L1);
+ test_hbitmap_next_x_check_range(data, L2 + 5 + L1 - 1, 1);
+ test_hbitmap_next_x_check_range(data, L2 + 5 + L1, 1);
+ test_hbitmap_next_x_check_range(data, L2 + 5 + L1 + 1, 1);
+
+ hbitmap_set(data->hb, L2 * 2, L3 - L2 * 2);
+ test_hbitmap_next_x_check(data, L2 * 2 - L1);
+ test_hbitmap_next_x_check(data, L2 * 2 - 2);
+ test_hbitmap_next_x_check(data, L2 * 2 - 1);
+ test_hbitmap_next_x_check(data, L2 * 2);
+ test_hbitmap_next_x_check(data, L2 * 2 + 1);
+ test_hbitmap_next_x_check(data, L2 * 2 + L1);
+ test_hbitmap_next_x_check(data, L3 - 1);
+ test_hbitmap_next_x_check_range(data, L2 * 2 - L1, L1 + 1);
+ test_hbitmap_next_x_check_range(data, L2 * 2, L2);
+
+ hbitmap_set(data->hb, 0, L3);
+ test_hbitmap_next_x_check(data, 0);
+}
+
+static void test_hbitmap_next_x_0(TestHBitmapData *data, const void *unused)
+{
+ test_hbitmap_next_x_do(data, 0);
+}
+
+static void test_hbitmap_next_x_4(TestHBitmapData *data, const void *unused)
+{
+ test_hbitmap_next_x_do(data, 4);
+}
+
+static void test_hbitmap_next_x_after_truncate(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, L1, 0);
+ hbitmap_test_truncate_impl(data, L1 * 2);
+ hbitmap_set(data->hb, 0, L1);
+ test_hbitmap_next_x_check(data, 0);
+}
+
+static void test_hbitmap_next_dirty_area_check_limited(TestHBitmapData *data,
+ int64_t offset,
+ int64_t count,
+ int64_t max_dirty)
+{
+ int64_t off1, off2;
+ int64_t len1 = 0, len2;
+ bool ret1, ret2;
+ int64_t end;
+
+ ret1 = hbitmap_next_dirty_area(data->hb,
+ offset, count == INT64_MAX ? INT64_MAX : offset + count, max_dirty,
+ &off1, &len1);
+
+ end = offset > data->size || data->size - offset < count ? data->size :
+ offset + count;
+
+ for (off2 = offset; off2 < end && !hbitmap_get(data->hb, off2); off2++) {
+ ;
+ }
+
+ for (len2 = 1; (off2 + len2 < end && len2 < max_dirty &&
+ hbitmap_get(data->hb, off2 + len2)); len2++)
+ {
+ ;
+ }
+
+ ret2 = off2 < end;
+ g_assert_cmpint(ret1, ==, ret2);
+
+ if (ret2) {
+ g_assert_cmpint(off1, ==, off2);
+ g_assert_cmpint(len1, ==, len2);
+ }
+}
+
+static void test_hbitmap_next_dirty_area_check(TestHBitmapData *data,
+ int64_t offset, int64_t count)
+{
+ test_hbitmap_next_dirty_area_check_limited(data, offset, count, INT64_MAX);
+}
+
+static void test_hbitmap_next_dirty_area_do(TestHBitmapData *data,
+ int granularity)
+{
+ hbitmap_test_init(data, L3, granularity);
+ test_hbitmap_next_dirty_area_check(data, 0, INT64_MAX);
+ test_hbitmap_next_dirty_area_check(data, 0, 1);
+ test_hbitmap_next_dirty_area_check(data, L3 - 1, 1);
+ test_hbitmap_next_dirty_area_check_limited(data, 0, INT64_MAX, 1);
+
+ hbitmap_set(data->hb, L2, 1);
+ test_hbitmap_next_dirty_area_check(data, 0, 1);
+ test_hbitmap_next_dirty_area_check(data, 0, L2);
+ test_hbitmap_next_dirty_area_check(data, 0, INT64_MAX);
+ test_hbitmap_next_dirty_area_check(data, L2 - 1, INT64_MAX);
+ test_hbitmap_next_dirty_area_check(data, L2 - 1, 1);
+ test_hbitmap_next_dirty_area_check(data, L2 - 1, 2);
+ test_hbitmap_next_dirty_area_check(data, L2 - 1, 3);
+ test_hbitmap_next_dirty_area_check(data, L2, INT64_MAX);
+ test_hbitmap_next_dirty_area_check(data, L2, 1);
+ test_hbitmap_next_dirty_area_check(data, L2 + 1, 1);
+ test_hbitmap_next_dirty_area_check_limited(data, 0, INT64_MAX, 1);
+ test_hbitmap_next_dirty_area_check_limited(data, L2 - 1, 2, 1);
+
+ hbitmap_set(data->hb, L2 + 5, L1);
+ test_hbitmap_next_dirty_area_check(data, 0, INT64_MAX);
+ test_hbitmap_next_dirty_area_check(data, L2 - 2, 8);
+ test_hbitmap_next_dirty_area_check(data, L2 + 1, 5);
+ test_hbitmap_next_dirty_area_check(data, L2 + 1, 3);
+ test_hbitmap_next_dirty_area_check(data, L2 + 4, L1);
+ test_hbitmap_next_dirty_area_check(data, L2 + 5, L1);
+ test_hbitmap_next_dirty_area_check(data, L2 + 7, L1);
+ test_hbitmap_next_dirty_area_check(data, L2 + L1, L1);
+ test_hbitmap_next_dirty_area_check(data, L2, 0);
+ test_hbitmap_next_dirty_area_check(data, L2 + 1, 0);
+ test_hbitmap_next_dirty_area_check_limited(data, L2 + 3, INT64_MAX, 3);
+ test_hbitmap_next_dirty_area_check_limited(data, L2 + 3, 7, 10);
+
+ hbitmap_set(data->hb, L2 * 2, L3 - L2 * 2);
+ test_hbitmap_next_dirty_area_check(data, 0, INT64_MAX);
+ test_hbitmap_next_dirty_area_check(data, L2, INT64_MAX);
+ test_hbitmap_next_dirty_area_check(data, L2 + 1, INT64_MAX);
+ test_hbitmap_next_dirty_area_check(data, L2 + 5 + L1 - 1, INT64_MAX);
+ test_hbitmap_next_dirty_area_check(data, L2 + 5 + L1, 5);
+ test_hbitmap_next_dirty_area_check(data, L2 * 2 - L1, L1 + 1);
+ test_hbitmap_next_dirty_area_check(data, L2 * 2, L2);
+ test_hbitmap_next_dirty_area_check_limited(data, L2 * 2 + 1, INT64_MAX, 5);
+ test_hbitmap_next_dirty_area_check_limited(data, L2 * 2 + 1, 10, 5);
+ test_hbitmap_next_dirty_area_check_limited(data, L2 * 2 + 1, 2, 5);
+
+ hbitmap_set(data->hb, 0, L3);
+ test_hbitmap_next_dirty_area_check(data, 0, INT64_MAX);
+}
+
+static void test_hbitmap_next_dirty_area_0(TestHBitmapData *data,
+ const void *unused)
+{
+ test_hbitmap_next_dirty_area_do(data, 0);
+}
+
+static void test_hbitmap_next_dirty_area_1(TestHBitmapData *data,
+ const void *unused)
+{
+ test_hbitmap_next_dirty_area_do(data, 1);
+}
+
+static void test_hbitmap_next_dirty_area_4(TestHBitmapData *data,
+ const void *unused)
+{
+ test_hbitmap_next_dirty_area_do(data, 4);
+}
+
+static void test_hbitmap_next_dirty_area_after_truncate(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, L1, 0);
+ hbitmap_test_truncate_impl(data, L1 * 2);
+ hbitmap_set(data->hb, L1 + 1, 1);
+ test_hbitmap_next_dirty_area_check(data, 0, INT64_MAX);
+}
+
+int main(int argc, char **argv)
+{
+ g_test_init(&argc, &argv, NULL);
+ hbitmap_test_add("/hbitmap/size/0", test_hbitmap_zero);
+ hbitmap_test_add("/hbitmap/size/unaligned", test_hbitmap_unaligned);
+ hbitmap_test_add("/hbitmap/iter/empty", test_hbitmap_iter_empty);
+ hbitmap_test_add("/hbitmap/iter/partial", test_hbitmap_iter_partial);
+ hbitmap_test_add("/hbitmap/iter/granularity", test_hbitmap_iter_granularity);
+ hbitmap_test_add("/hbitmap/get/all", test_hbitmap_get_all);
+ hbitmap_test_add("/hbitmap/get/some", test_hbitmap_get_some);
+ hbitmap_test_add("/hbitmap/set/all", test_hbitmap_set_all);
+ hbitmap_test_add("/hbitmap/set/one", test_hbitmap_set_one);
+ hbitmap_test_add("/hbitmap/set/two-elem", test_hbitmap_set_two_elem);
+ hbitmap_test_add("/hbitmap/set/general", test_hbitmap_set);
+ hbitmap_test_add("/hbitmap/set/twice", test_hbitmap_set_twice);
+ hbitmap_test_add("/hbitmap/set/overlap", test_hbitmap_set_overlap);
+ hbitmap_test_add("/hbitmap/reset/empty", test_hbitmap_reset_empty);
+ hbitmap_test_add("/hbitmap/reset/general", test_hbitmap_reset);
+ hbitmap_test_add("/hbitmap/reset/all", test_hbitmap_reset_all);
+ hbitmap_test_add("/hbitmap/granularity", test_hbitmap_granularity);
+
+ hbitmap_test_add("/hbitmap/truncate/nop", test_hbitmap_truncate_nop);
+ hbitmap_test_add("/hbitmap/truncate/grow/negligible",
+ test_hbitmap_truncate_grow_negligible);
+ hbitmap_test_add("/hbitmap/truncate/shrink/negligible",
+ test_hbitmap_truncate_shrink_negligible);
+ hbitmap_test_add("/hbitmap/truncate/grow/tiny",
+ test_hbitmap_truncate_grow_tiny);
+ hbitmap_test_add("/hbitmap/truncate/shrink/tiny",
+ test_hbitmap_truncate_shrink_tiny);
+ hbitmap_test_add("/hbitmap/truncate/grow/small",
+ test_hbitmap_truncate_grow_small);
+ hbitmap_test_add("/hbitmap/truncate/shrink/small",
+ test_hbitmap_truncate_shrink_small);
+ hbitmap_test_add("/hbitmap/truncate/grow/medium",
+ test_hbitmap_truncate_grow_medium);
+ hbitmap_test_add("/hbitmap/truncate/shrink/medium",
+ test_hbitmap_truncate_shrink_medium);
+ hbitmap_test_add("/hbitmap/truncate/grow/large",
+ test_hbitmap_truncate_grow_large);
+ hbitmap_test_add("/hbitmap/truncate/shrink/large",
+ test_hbitmap_truncate_shrink_large);
+
+ hbitmap_test_add("/hbitmap/serialize/align",
+ test_hbitmap_serialize_align);
+ hbitmap_test_add("/hbitmap/serialize/basic",
+ test_hbitmap_serialize_basic);
+ hbitmap_test_add("/hbitmap/serialize/part",
+ test_hbitmap_serialize_part);
+ hbitmap_test_add("/hbitmap/serialize/zeroes",
+ test_hbitmap_serialize_zeroes);
+
+ hbitmap_test_add("/hbitmap/iter/iter_and_reset",
+ test_hbitmap_iter_and_reset);
+
+ hbitmap_test_add("/hbitmap/next_zero/next_x_0",
+ test_hbitmap_next_x_0);
+ hbitmap_test_add("/hbitmap/next_zero/next_x_4",
+ test_hbitmap_next_x_4);
+ hbitmap_test_add("/hbitmap/next_zero/next_x_after_truncate",
+ test_hbitmap_next_x_after_truncate);
+
+ hbitmap_test_add("/hbitmap/next_dirty_area/next_dirty_area_0",
+ test_hbitmap_next_dirty_area_0);
+ hbitmap_test_add("/hbitmap/next_dirty_area/next_dirty_area_1",
+ test_hbitmap_next_dirty_area_1);
+ hbitmap_test_add("/hbitmap/next_dirty_area/next_dirty_area_4",
+ test_hbitmap_next_dirty_area_4);
+ hbitmap_test_add("/hbitmap/next_dirty_area/next_dirty_area_after_truncate",
+ test_hbitmap_next_dirty_area_after_truncate);
+
+ g_test_run();
+
+ return 0;
+}
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-12-18 14:21:59 +0100