QImage QgsSymbol::getCachedPointSymbolAsImage( double widthScale, bool selected, QColor selectionColor, double opacity )
{
if ( !mCacheUpToDate2
|| ( selected && mSelectionColor != selectionColor ) || ( opacity != mOpacity ) )
{
if ( selected )
{
cache2( widthScale, selectionColor, opacity );
}
else
{
cache2( widthScale, mSelectionColor, opacity );
}
}
if ( selected )
{
return mPointSymbolImageSelected2;
}
else
{
return mPointSymbolImage2;
}
}
void tst_QCache::maxCost()
{
QCache<QString, int> cache1, cache2(100), cache3(200), cache4(-50);
QCOMPARE(cache1.maxCost(), 100);
QCOMPARE(cache2.maxCost(), 100);
QCOMPARE(cache3.maxCost(), 200);
QCOMPARE(cache4.maxCost(), -50); // 0 would also make sense
cache1.setMaxCost(101);
QCOMPARE(cache1.maxCost(), 101);
cache1.insert("one", new int(1), 1);
cache1.insert("two", new int(2), 1);
QCOMPARE(cache1.totalCost(), 2);
QCOMPARE(cache1.size(), 2);
QCOMPARE(cache1.maxCost(), 101);
cache1.insert("three", new int(3), 98);
QCOMPARE(cache1.totalCost(), 100);
QCOMPARE(cache1.size(), 3);
QCOMPARE(cache1.maxCost(), 101);
cache1.insert("four", new int(4), 1);
QCOMPARE(cache1.totalCost(), 101);
QCOMPARE(cache1.size(), 4);
QCOMPARE(cache1.maxCost(), 101);
cache1.insert("five", new int(4), 1);
QVERIFY(cache1.totalCost() <= 101);
QVERIFY(cache1.size() == 4);
QCOMPARE(cache1.maxCost(), 101);
cache1.setMaxCost(-1);
QCOMPARE(cache1.totalCost(), 0);
QCOMPARE(cache1.maxCost(), -1);
cache2.setMaxCost(202);
QCOMPARE(cache2.maxCost(), 202);
cache3.setMaxCost(-50);
QCOMPARE(cache3.maxCost(), -50);
}
bool test_block_cache()
{
using value_type = std::pair<int, int>;
constexpr size_t magic1 = 0xc01ddead;
constexpr unsigned subblock_raw_size = 1024 * 8; // 8KB subblocks
constexpr unsigned block_size = 128; // 1MB blocks (=128 subblocks)
constexpr unsigned num_blocks = 64; // number of blocks to use for this test
constexpr unsigned cache_size = 8; // size of cache in blocks
using subblock_type = foxxll::typed_block<subblock_raw_size, value_type>;
using block_type = foxxll::typed_block<block_size* sizeof(subblock_type), subblock_type>;
constexpr unsigned subblock_size = subblock_type::size; // size in values
using bid_type = block_type::bid_type;
using bid_container_type = std::vector<bid_type>;
// prepare test: allocate blocks, fill them with values and write to disk
bid_container_type bids(num_blocks);
foxxll::block_manager* bm = foxxll::block_manager::get_instance();
bm->new_blocks(foxxll::striping(), bids.begin(), bids.end());
block_type* block = new block_type;
for (unsigned i_block = 0; i_block < num_blocks; i_block++) {
for (unsigned i_subblock = 0; i_subblock < block_size; i_subblock++) {
for (unsigned i_value = 0; i_value < subblock_size; i_value++) {
int value = i_value + i_subblock * subblock_size + i_block * block_size;
(*block)[i_subblock][i_value] = value_type(value, value);
}
}
foxxll::request_ptr req = block->write(bids[i_block]);
req->wait();
}
std::mt19937 randgen;
std::uniform_int_distribution<int> distr_num(0, num_blocks - 1);
std::uniform_int_distribution<int> distr_size(0, block_size - 1);
// create block_cache
using cache_type = stxxl::hash_map::block_cache<block_type>;
cache_type cache(cache_size);
// load random subblocks and check for values
int n_runs = cache_size * 10;
for (int i_run = 0; i_run < n_runs; i_run++) {
int i_block = distr_num(randgen);
int i_subblock = distr_size(randgen);
subblock_type* subblock = cache.get_subblock(bids[i_block], i_subblock);
int expected = i_block * block_size + i_subblock * subblock_size + 1;
die_unless((*subblock)[1].first == expected);
}
// do the same again but this time with prefetching
for (int i_run = 0; i_run < n_runs; i_run++) {
int i_block = distr_num(randgen);
int i_subblock = distr_size(randgen);
cache.prefetch_block(bids[i_block]);
subblock_type* subblock = cache.get_subblock(bids[i_block], i_subblock);
int expected = i_block * block_size + i_subblock * subblock_size + 1;
die_unless((*subblock)[1].first == expected);
}
// load and modify some subblocks; flush cache and check values
randgen.seed(magic1);
for (int i_run = 0; i_run < n_runs; i_run++) {
int i_block = distr_num(randgen);
int i_subblock = distr_size(randgen);
subblock_type* subblock = cache.get_subblock(bids[i_block], i_subblock);
die_unless(cache.make_dirty(bids[i_block]));
(*subblock)[1].first = (*subblock)[1].second + 42;
}
randgen.seed(magic1);
for (int i_run = 0; i_run < n_runs; i_run++) {
int i_block = distr_num(randgen);
int i_subblock = distr_size(randgen);
subblock_type* subblock = cache.get_subblock(bids[i_block], i_subblock);
int expected = i_block * block_size + i_subblock * subblock_size + 1;
die_unequal((*subblock)[1].first, expected + 42);
}
// test retaining
cache.clear();
// not yet cached
die_unless(cache.retain_block(bids[0]) == false);
cache.prefetch_block(bids[0]);
// cached, should be retained
die_unless(cache.retain_block(bids[0]) == true);
// release again
die_unless(cache.release_block(bids[0]) == true);
// retrain-count should be 0, release fails
die_unless(cache.release_block(bids[0]) == false);
// cache new block
subblock_type* kicked_subblock = cache.get_subblock(bids[1], 0);
// load other blocks, so that kicked_subblock, well, gets kicked
for (unsigned i = 0; i < cache_size + 5; i++) {
cache.prefetch_block(bids[i + 3]);
}
// load kicked subblock again, should be at a different location
die_unless(cache.get_subblock(bids[1], 0) != kicked_subblock);
subblock_type* retained_subblock = cache.get_subblock(bids[1], 0);
// now retain subblock
die_unless(cache.retain_block(bids[1]) == true);
for (unsigned i = 0; i < cache_size + 5; i++) {
cache.prefetch_block(bids[i + 3]);
}
// retained_subblock should not have been kicked
die_unless(cache.get_subblock(bids[1], 0) == retained_subblock);
cache.clear();
// test swapping
subblock_type* a_subblock = cache.get_subblock(bids[6], 1);
cache_type cache2(cache_size / 2);
std::swap(cache, cache2);
die_unless(cache.size() == cache_size / 2);
die_unless(cache2.size() == cache_size);
die_unless(cache2.get_subblock(bids[6], 1) == a_subblock);
delete block;
LOG1 << "Passed Block-Cache Test";
return true;
}
