// Copyright 2010-2012, Google Inc.
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//
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//
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// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
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// in the documentation and/or other materials provided with the
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// contributors may be used to endorse or promote products derived from
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//
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <string>
#include "base/base.h"
#include "base/thread.h"
#include "converter/cached_connector.h"
#include "converter/connector_interface.h"
#include "converter/sparse_connector.h"
#include "testing/base/public/gunit.h"
DECLARE_string(test_tmpdir);
namespace mozc {
namespace converter {
namespace {
class TestConnector : public ConnectorInterface {
public:
TestConnector(int offset) : offset_(offset) {}
~TestConnector() {}
int GetTransitionCost(uint16 rid, uint16 lid) const {
uint32 key = (static_cast<uint32>(rid) << 16) | lid;
return offset_ + key;
}
int GetResolution() const {
return 0;
}
int offset_;
};
// Use Thread Local Storage for Cache of the Connector.
const int kCacheSize = 256;
TLS_KEYWORD bool g_test_cache_initialized = false;
TLS_KEYWORD int g_test_cache_key[kCacheSize];
TLS_KEYWORD int g_test_cache_value[kCacheSize];
class CachedConnectorThread : public Thread {
public:
CachedConnectorThread(int offset) : offset_(offset) {}
void Run() {
// Create the connector in the new thread
test_.reset(new TestConnector(offset_));
cached_.reset(new CachedConnector(test_.get(),
&g_test_cache_initialized,
g_test_cache_key,
g_test_cache_value,
kCacheSize));
// Clear Cache just in case.
cached_->ClearCache();
// With TLS, the different cache is used when a new
// thread is created.
const int kTrialSize = 100;
const int kIdSize = 100;
for (int trial = 0; trial < kTrialSize; ++trial) {
for (int i = 0; i < kIdSize; ++i) {
for (int j = 0; j < kIdSize; ++j) {
EXPECT_EQ(test_->GetTransitionCost(i, j),
cached_->GetTransitionCost(i, j)) << offset_;
}
}
}
// Clear Cache just in case.
cached_->ClearCache();
}
private:
int offset_;
scoped_ptr<TestConnector> test_;
scoped_ptr<CachedConnector> cached_;
};
} // namespace
class CachedConnectorTest : public testing::Test {
protected:
CachedConnectorTest() : test_(0), cached_(&test_,
&g_test_cache_initialized,
g_test_cache_key,
g_test_cache_value,
kCacheSize) {}
void SetUp() {
// Clear the cache on this thread. b/5119167.
cached_.ClearCache();
}
void TearDown() {
// Clear the cache on this thread just in case.
cached_.ClearCache();
}
TestConnector test_;
CachedConnector cached_;
};
TEST_F(CachedConnectorTest, CacheTest) {
TestConnector test(0);
CachedConnector cached(&test, &g_test_cache_initialized,
g_test_cache_key, g_test_cache_value, kCacheSize);
for (int trial = 0; trial < 100; ++trial) {
for (int i = 0; i < 100; ++i) {
for (int j = 0; j < 100; ++j) {
EXPECT_EQ(test.GetTransitionCost(i, j),
cached.GetTransitionCost(i, j));
}
}
}
}
TEST_F(CachedConnectorTest, CacheTestWithThread) {
#ifdef HAVE_TLS
const int kSize = 10;
vector<CachedConnectorThread *> threads;
for (int i = 0; i < kSize; ++i) {
threads.push_back(new CachedConnectorThread(i));
}
for (int i = 0; i < kSize; ++i) {
threads[i]->Start();
}
for (int i = 0; i < kSize; ++i) {
threads[i]->Join();
}
for (int i = 0; i < kSize; ++i) {
delete threads[i];
}
#endif
}
} // namespace converter
} // namespace mozc