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split

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Gregory Burd 2024-05-13 12:46:25 -04:00
parent 604d48617e
commit f5b500087d
3 changed files with 48 additions and 40 deletions
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8
Makefile
View file

@ -6,16 +6,16 @@ SHARED_LIB = libsparsemap.so
LIBS = -lm
#CFLAGS = -Wall -Wextra -Wpedantic -Of -std=c11 -Iinclude/ -fPIC
#CFLAGS = -Wall -Wextra -Wpedantic -Og -g -std=c11 -Iinclude/ -fPIC
CFLAGS = -DSPARSEMAP_DIAGNOSTIC -DDEBUG -Wall -Wextra -Wpedantic -O0 -g -std=c11 -Iinclude/ -fPIC
#CFLAGS = -DSPARSEMAP_DIAGNOSTIC -DDEBUG -Wall -Wextra -Wpedantic -Ofast -g -std=c11 -Iinclude/ -fPIC
#CFLAGS = -DSPARSEMAP_DIAGNOSTIC -DDEBUG -Wall -Wextra -Wpedantic -O0 -g -std=c11 -Iinclude/ -fPIC
CFLAGS = -DSPARSEMAP_DIAGNOSTIC -DDEBUG -Wall -Wextra -Wpedantic -Ofast -g -std=c11 -Iinclude/ -fPIC
#CFLAGS = -Wall -Wextra -Wpedantic -Og -g -std=c11 -Iinclude/ -fPIC
#CFLAGS = -Wall -Wextra -Wpedantic -Ofast -g -std=c11 -Iinclude/ -fPIC
#CFLAGS = -DSPARSEMAP_DIAGNOSTIC -DDEBUG -Wall -Wextra -Wpedantic -Og -g -fsanitize=address,leak,object-size,pointer-compare,pointer-subtract,null,return,bounds,pointer-overflow,undefined -fsanitize-address-use-after-scope -std=c11 -Iinclude/ -fPIC
#CFLAGS = -Wall -Wextra -Wpedantic -Og -g -fsanitize=all -fhardened -std=c11 -Iinclude/ -fPIC
#TEST_FLAGS = -DDEBUG -Wall -Wextra -Wpedantic -O0 -g -std=c11 -Iinclude/ -Itests/ -fPIC
#TEST_FLAGS = -Wall -Wextra -Wpedantic -Ofast -g -std=c11 -Iinclude/ -Itests/ -fPIC
TEST_FLAGS = -Wall -Wextra -Wpedantic -Og -g -std=c11 -Iinclude/ -Itests/ -fPIC
TEST_FLAGS = -Wall -Wextra -Wpedantic -Ofast -g -std=c11 -Iinclude/ -Itests/ -fPIC
#TEST_FLAGS = -Wall -Wextra -Wpedantic -Og -g -std=c11 -Iinclude/ -Itests/ -fPIC
#TEST_FLAGS = -DDEBUG -Wall -Wextra -Wpedantic -Og -g -fsanitize=address,leak,object-size,pointer-compare,pointer-subtract,null,return,bounds,pointer-overflow,undefined -fsanitize-address-use-after-scope -std=c11 -Iinclude/ -fPIC
TESTS = tests/test tests/soak

21
src/sparsemap.c
View file

@ -228,7 +228,7 @@ static void
__sm_chunk_reduce_capacity(__sm_chunk_t *chunk, size_t capacity)
{
__sm_assert(capacity % SM_BITS_PER_VECTOR == 0);
__sm_assert(capacity < SM_CHUNK_MAX_CAPACITY);
__sm_assert(capacity <= SM_CHUNK_MAX_CAPACITY);
if (capacity >= SM_CHUNK_MAX_CAPACITY) {
return;
@ -1251,7 +1251,7 @@ sparsemap_set(sparsemap_t *map, sparsemap_idx_t idx, bool value)
__sm_insert_data(map, offset, &buf[0], sizeof(buf));
start += __sm_chunk_get_capacity(&chunk);
if ((sparsemap_idx_t)start + SM_CHUNK_MAX_CAPACITY < idx) {
if ((sparsemap_idx_t)start + SM_CHUNK_MAX_CAPACITY <= idx) {
start = __sm_get_chunk_aligned_offset(idx);
}
*(sm_idx_t *)p = start;
@ -1610,7 +1610,7 @@ sparsemap_merge(sparsemap_t *destination, sparsemap_t *source)
sparsemap_idx_t
sparsemap_split(sparsemap_t *map, sparsemap_idx_t offset, sparsemap_t *other)
{
if (offset == 0) {
if (!(offset == SPARSEMAP_IDX_MAX) && (offset < 0 || offset >= sparsemap_get_ending_offset(map))) {
return 0;
}
@ -1631,10 +1631,6 @@ sparsemap_split(sparsemap_t *map, sparsemap_idx_t offset, sparsemap_t *other)
/* |src| points to the source-chunk */
uint8_t *src = __sm_get_chunk_data(map, 0);
/* |offset| is relative to the beginning of this sparsemap_t; best
make it absolute. */
offset += *(sm_idx_t *)src;
bool in_middle = false;
uint8_t *prev = src;
size_t i, count = __sm_get_chunk_count(map);
@ -1688,14 +1684,17 @@ sparsemap_split(sparsemap_t *map, sparsemap_idx_t offset, sparsemap_t *other)
__sm_chunk_t d_chunk;
__sm_chunk_init(&d_chunk, dst);
__sm_chunk_reduce_capacity(&d_chunk, capacity - (offset % capacity));
__sm_chunk_reduce_capacity(&d_chunk, __sm_get_vector_aligned_offset(capacity - (offset % capacity)));
/* Now copy the bits. */
sparsemap_idx_t d = offset;
sparsemap_idx_t b = __sm_get_vector_aligned_offset(offset % capacity);
for (size_t j = offset % capacity; j < capacity; j++, d++) {
if (__sm_chunk_is_set(&s_chunk, j)) {
sparsemap_set(other, d, true);
sparsemap_set(map, d, false); // TODO remove, and fix reduce_capacity below
assert(sparsemap_set(other, d, true) == d);
if (j > b && (j - b) % capacity < SM_BITS_PER_VECTOR) {
sparsemap_set(map, d, false);
}
}
}
@ -1705,7 +1704,7 @@ sparsemap_split(sparsemap_t *map, sparsemap_idx_t offset, sparsemap_t *other)
i++;
/* Reduce the capacity of the source-chunk effectively erases bits. */
// TODO: __sm_chunk_reduce_capacity(&s_chunk, offset % capacity);
__sm_chunk_reduce_capacity(&s_chunk, b + SM_BITS_PER_VECTOR);
}
/* Now continue with all remaining chunks. */

59
tests/test.c
View file

@ -720,35 +720,43 @@ test_api_split(const MunitParameter params[], void *data)
sparsemap_init(&portion, buf, 1024);
for (int i = 0; i < 1024; i++) {
sparsemap_set(map, i, true);
}
for (int i = 0; i < 1024; i++) {
assert_true(sparsemap_is_set(map, i));
assert_false(sparsemap_is_set(&portion, i));
}
sparsemap_split(map, 512, &portion);
for (int i = 0; i < 512; i++) {
assert_true(sparsemap_is_set(map, i));
assert_false(sparsemap_is_set(&portion, i));
}
for (int i = 513; i < 1024; i++) {
assert_false(sparsemap_is_set(map, i));
assert_true(sparsemap_is_set(&portion, i));
for (sparsemap_idx_t off = 0; off < 1024; off++) {
for (sparsemap_idx_t seg = 0; seg < 10 * 1024; seg += 1024) {
for (sparsemap_idx_t i = 0; i < 1024; i++) {
assert_true(sparsemap_set(map, i + seg, true) == i + seg);
}
for (sparsemap_idx_t i = 0; i < 1024; i++) {
assert_true(sparsemap_is_set(map, i + seg));
assert_false(sparsemap_is_set(&portion, i + seg));
}
sparsemap_split(map, seg + off, &portion);
for (sparsemap_idx_t i = 0; i < off; i++) {
assert_true(sparsemap_is_set(map, i + seg));
assert_false(sparsemap_is_set(&portion, i + seg));
}
for (sparsemap_idx_t i = off + 1; i < 1024; i++) {
assert_false(sparsemap_is_set(map, i + seg));
assert_true(sparsemap_is_set(&portion, i + seg));
}
sparsemap_clear(map);
sparsemap_clear(&portion);
}
}
sparsemap_clear(map);
sparsemap_clear(&portion);
for (int i = 0; i < 100; i++) {
sparsemap_set(map, i, true);
for (sparsemap_idx_t i = 0; i < 100; i++) {
assert_true(sparsemap_set(map, i, true) == i);
}
for (int i = 0; i < 100; i++) {
for (sparsemap_idx_t i = 0; i < 100; i++) {
assert_true(sparsemap_is_set(map, i));
assert_false(sparsemap_is_set(&portion, i));
}
sparsemap_idx_t offset = sparsemap_split(map, SPARSEMAP_IDX_MAX, &portion);
for (size_t i = 0; i < offset; i++) {
assert_true(sparsemap_is_set(map, i));
assert_false(sparsemap_is_set(&portion, i));
@ -762,16 +770,17 @@ test_api_split(const MunitParameter params[], void *data)
sparsemap_clear(map);
sparsemap_init(&portion, buf, 1024);
for (int i = 0; i < 13; i++) {
sparsemap_set(map, i + 24, true);
for (sparsemap_idx_t i = 0; i < 13; i++) {
assert_true(sparsemap_set(map, i + 24, true) == i + 24);
}
offset = sparsemap_split(map, SPARSEMAP_IDX_MAX, &portion);
for (size_t i = 0; i < offset - 24; i++) {
for (sparsemap_idx_t i = 0; i < offset - 24; i++) {
assert_true(sparsemap_is_set(map, i + 24));
assert_false(sparsemap_is_set(&portion, i + 24));
}
for (int i = offset - 24; i < 13; i++) {
for (sparsemap_idx_t i = offset - 24; i < 13; i++) {
assert_false(sparsemap_is_set(map, i + 24));
assert_true(sparsemap_is_set(&portion, i + 24));
}