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-rw-r--r--tests/test-hbitmap.c408
1 files changed, 408 insertions, 0 deletions
diff --git a/tests/test-hbitmap.c b/tests/test-hbitmap.c
new file mode 100644
index 0000000000..fcc6a00fc3
--- /dev/null
+++ b/tests/test-hbitmap.c
@@ -0,0 +1,408 @@
+/*
+ * 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 <glib.h>
+#include <stdarg.h>
+#include "qemu/hbitmap.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;
+ 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 = (size + BITS_PER_LONG - 1) / BITS_PER_LONG;
+ if (n == 0) {
+ n = 1;
+ }
+ data->bits = g_new0(unsigned long, n);
+ data->size = size;
+ data->granularity = granularity;
+ hbitmap_test_check(data, 0);
+}
+
+static void hbitmap_test_teardown(TestHBitmapData *data,
+ const void *unused)
+{
+ if (data->hb) {
+ hbitmap_free(data->hb);
+ data->hb = NULL;
+ }
+ if (data->bits) {
+ 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_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_iter_past(TestHBitmapData *data,
+ const void *unused)
+{
+ hbitmap_test_init(data, L3, 0);
+ hbitmap_test_set(data, 0, L3);
+ hbitmap_test_check(data, L3);
+}
+
+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_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, 1);
+ 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_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);
+}
+
+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/past", test_hbitmap_iter_past);
+ 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/granularity", test_hbitmap_granularity);
+ g_test_run();
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-17 11:01:46 +0000