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recursive space map

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This commit is contained in:
Joe Thornber
2011-11-09 10:21:25 +00:00
parent 45042ed0e1
commit 4f325b96ad
10 changed files with 333 additions and 40 deletions
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42
unit-tests/space_map_disk_t.cc
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@@ -113,6 +113,36 @@ void _test_set_affects_nr_allocated(space_map::ptr sm)
}
}
// Ref counts below 3 gets stored as bitmaps, above 3 they go into a btree
// with uint32_t values. Worth checking this thoroughly, especially for
// the metadata format which may have complications due to recursion.
void _test_high_ref_counts(space_map::ptr sm)
{
srand(1234);
for (unsigned i = 0; i < NR_BLOCKS; i++)
sm->set_count(i, rand() % 6789);
sm->commit();
for (unsigned i = 0; i < NR_BLOCKS; i++) {
sm->inc(i);
sm->inc(i);
if (i % 1000)
sm->commit();
}
sm->commit();
srand(1234);
for (unsigned i = 0; i < NR_BLOCKS; i++)
BOOST_CHECK_EQUAL(sm->get_count(i), (rand() % 6789) + 2);
for (unsigned i = 0; i < NR_BLOCKS; i++)
sm->dec(i);
srand(1234);
for (unsigned i = 0; i < NR_BLOCKS; i++)
BOOST_CHECK_EQUAL(sm->get_count(i), (rand() % 6789) + 1);
}
//----------------------------------------------------------------
#if 0
@@ -164,6 +194,12 @@ BOOST_AUTO_TEST_CASE(test_disk_set_affects_nr_allocated)
_test_set_affects_nr_allocated(sm);
}
BOOST_AUTO_TEST_CASE(test_disk_high_ref_counts)
{
space_map::ptr sm = create_sm_disk();
_test_high_ref_counts(sm);
}
BOOST_AUTO_TEST_CASE(test_disk_reopen)
{
unsigned char buffer[128];
@@ -232,6 +268,12 @@ BOOST_AUTO_TEST_CASE(test_metadata_set_affects_nr_allocated)
_test_set_affects_nr_allocated(sm);
}
BOOST_AUTO_TEST_CASE(test_metadata_high_ref_counts)
{
space_map::ptr sm = create_sm_metadata();
_test_high_ref_counts(sm);
}
BOOST_AUTO_TEST_CASE(test_metadata_reopen)
{
unsigned char buffer[128];