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#include "test/jemalloc_test.h"
#include "jemalloc/internal/qr.h"
/* Number of ring entries, in [2..26]. */
#define NENTRIES 9
/* Split index, in [1..NENTRIES). */
#define SPLIT_INDEX 5
typedef struct ring_s ring_t;
struct ring_s {
qr(ring_t) link;
char id;
};
static void
init_entries(ring_t *entries) {
unsigned i;
for (i = 0; i < NENTRIES; i++) {
qr_new(&entries[i], link);
entries[i].id = 'a' + i;
}
}
static void
test_independent_entries(ring_t *entries) {
ring_t *t;
unsigned i, j;
for (i = 0; i < NENTRIES; i++) {
j = 0;
qr_foreach(t, &entries[i], link) {
j++;
}
assert_u_eq(j, 1,
"Iteration over single-element ring should visit precisely "
"one element");
}
for (i = 0; i < NENTRIES; i++) {
j = 0;
qr_reverse_foreach(t, &entries[i], link) {
j++;
}
assert_u_eq(j, 1,
"Iteration over single-element ring should visit precisely "
"one element");
}
for (i = 0; i < NENTRIES; i++) {
t = qr_next(&entries[i], link);
assert_ptr_eq(t, &entries[i],
"Next element in single-element ring should be same as "
"current element");
}
for (i = 0; i < NENTRIES; i++) {
t = qr_prev(&entries[i], link);
assert_ptr_eq(t, &entries[i],
"Previous element in single-element ring should be same as "
"current element");
}
}
TEST_BEGIN(test_qr_one) {
ring_t entries[NENTRIES];
init_entries(entries);
test_independent_entries(entries);
}
TEST_END
static void
test_entries_ring(ring_t *entries) {
ring_t *t;
unsigned i, j;
for (i = 0; i < NENTRIES; i++) {
j = 0;
qr_foreach(t, &entries[i], link) {
assert_c_eq(t->id, entries[(i+j) % NENTRIES].id,
"Element id mismatch");
j++;
}
}
for (i = 0; i < NENTRIES; i++) {
j = 0;
qr_reverse_foreach(t, &entries[i], link) {
assert_c_eq(t->id, entries[(NENTRIES+i-j-1) %
NENTRIES].id, "Element id mismatch");
j++;
}
}
for (i = 0; i < NENTRIES; i++) {
t = qr_next(&entries[i], link);
assert_c_eq(t->id, entries[(i+1) % NENTRIES].id,
"Element id mismatch");
}
for (i = 0; i < NENTRIES; i++) {
t = qr_prev(&entries[i], link);
assert_c_eq(t->id, entries[(NENTRIES+i-1) % NENTRIES].id,
"Element id mismatch");
}
}
TEST_BEGIN(test_qr_after_insert) {
ring_t entries[NENTRIES];
unsigned i;
init_entries(entries);
for (i = 1; i < NENTRIES; i++) {
qr_after_insert(&entries[i - 1], &entries[i], link);
}
test_entries_ring(entries);
}
TEST_END
TEST_BEGIN(test_qr_remove) {
ring_t entries[NENTRIES];
ring_t *t;
unsigned i, j;
init_entries(entries);
for (i = 1; i < NENTRIES; i++) {
qr_after_insert(&entries[i - 1], &entries[i], link);
}
for (i = 0; i < NENTRIES; i++) {
j = 0;
qr_foreach(t, &entries[i], link) {
assert_c_eq(t->id, entries[i+j].id,
"Element id mismatch");
j++;
}
j = 0;
qr_reverse_foreach(t, &entries[i], link) {
assert_c_eq(t->id, entries[NENTRIES - 1 - j].id,
"Element id mismatch");
j++;
}
qr_remove(&entries[i], link);
}
test_independent_entries(entries);
}
TEST_END
TEST_BEGIN(test_qr_before_insert) {
ring_t entries[NENTRIES];
ring_t *t;
unsigned i, j;
init_entries(entries);
for (i = 1; i < NENTRIES; i++) {
qr_before_insert(&entries[i - 1], &entries[i], link);
}
for (i = 0; i < NENTRIES; i++) {
j = 0;
qr_foreach(t, &entries[i], link) {
assert_c_eq(t->id, entries[(NENTRIES+i-j) %
NENTRIES].id, "Element id mismatch");
j++;
}
}
for (i = 0; i < NENTRIES; i++) {
j = 0;
qr_reverse_foreach(t, &entries[i], link) {
assert_c_eq(t->id, entries[(i+j+1) % NENTRIES].id,
"Element id mismatch");
j++;
}
}
for (i = 0; i < NENTRIES; i++) {
t = qr_next(&entries[i], link);
assert_c_eq(t->id, entries[(NENTRIES+i-1) % NENTRIES].id,
"Element id mismatch");
}
for (i = 0; i < NENTRIES; i++) {
t = qr_prev(&entries[i], link);
assert_c_eq(t->id, entries[(i+1) % NENTRIES].id,
"Element id mismatch");
}
}
TEST_END
static void
test_split_entries(ring_t *entries) {
ring_t *t;
unsigned i, j;
for (i = 0; i < NENTRIES; i++) {
j = 0;
qr_foreach(t, &entries[i], link) {
if (i < SPLIT_INDEX) {
assert_c_eq(t->id,
entries[(i+j) % SPLIT_INDEX].id,
"Element id mismatch");
} else {
assert_c_eq(t->id, entries[(i+j-SPLIT_INDEX) %
(NENTRIES-SPLIT_INDEX) + SPLIT_INDEX].id,
"Element id mismatch");
}
j++;
}
}
}
TEST_BEGIN(test_qr_meld_split) {
ring_t entries[NENTRIES];
unsigned i;
init_entries(entries);
for (i = 1; i < NENTRIES; i++) {
qr_after_insert(&entries[i - 1], &entries[i], link);
}
qr_split(&entries[0], &entries[SPLIT_INDEX], ring_t, link);
test_split_entries(entries);
qr_meld(&entries[0], &entries[SPLIT_INDEX], ring_t, link);
test_entries_ring(entries);
qr_meld(&entries[0], &entries[SPLIT_INDEX], ring_t, link);
test_split_entries(entries);
qr_split(&entries[0], &entries[SPLIT_INDEX], ring_t, link);
test_entries_ring(entries);
qr_split(&entries[0], &entries[0], ring_t, link);
test_entries_ring(entries);
qr_meld(&entries[0], &entries[0], ring_t, link);
test_entries_ring(entries);
}
TEST_END
int
main(void) {
return test(
test_qr_one,
test_qr_after_insert,
test_qr_remove,
test_qr_before_insert,
test_qr_meld_split);
}
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