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#include <Common/ThreadFuzzer.h>
#include <Functions/FunctionFactory.h>
#include <DataTypes/DataTypesNumber.h>
#include <Core/Field.h>
namespace DB
{
namespace
{
/** Returns whether Thread Fuzzer is effective.
* It can be used in tests to prevent too long runs.
*/
class FunctionHasThreadFuzzer : public IFunction
{
public:
static constexpr auto name = "hasThreadFuzzer";
static FunctionPtr create(ContextPtr)
{
return std::make_shared<FunctionHasThreadFuzzer>();
}
String getName() const override
{
return name;
}
size_t getNumberOfArguments() const override
{
return 0;
}
bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return false; }
DataTypePtr getReturnTypeImpl(const DataTypes & /*arguments*/) const override
{
return std::make_shared<DataTypeUInt8>();
}
ColumnPtr executeImpl(const ColumnsWithTypeAndName &, const DataTypePtr &, size_t input_rows_count) const override
{
return DataTypeUInt8().createColumnConst(input_rows_count, ThreadFuzzer::instance().isEffective());
}
};
}
REGISTER_FUNCTION(HasThreadFuzzer)
{
factory.registerFunction<FunctionHasThreadFuzzer>();
}
}
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