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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 MySQL AB
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <config.h>
#include <drizzled/error.h>
#include <drizzled/internal/m_string.h>
#include <drizzled/plugin/function.h>
#include <drizzled/session.h>
using namespace std;
using namespace drizzled;
class BenchmarkFunction :public Item_int_func
{
public:
BenchmarkFunction() :Item_int_func() {}
int64_t val_int();
virtual void print(String *str);
const char *func_name() const
{
return "benchmark";
}
void fix_length_and_dec()
{
max_length= 1;
maybe_null= false;
}
bool check_argument_count(int n)
{
return (n == 2);
}
};
/* This function is just used to test speed of different functions */
int64_t BenchmarkFunction::val_int()
{
assert(fixed == true);
char buff[MAX_FIELD_WIDTH];
String tmp(buff,sizeof(buff), &my_charset_bin);
type::Decimal tmp_decimal;
uint64_t loop_count;
loop_count= (uint64_t) args[0]->val_int();
if (args[0]->null_value ||
(args[0]->unsigned_flag == false && (((int64_t) loop_count) < 0)))
{
if (args[0]->null_value == false)
{
internal::int64_t10_to_str((int64_t)loop_count, buff, -10);
push_warning_printf(&getSession(), DRIZZLE_ERROR::WARN_LEVEL_ERROR,
ER_WRONG_VALUE_FOR_TYPE, ER(ER_WRONG_VALUE_FOR_TYPE),
"count", buff, "benchmark");
}
null_value= true;
return 0;
}
null_value= false;
uint64_t loop;
for (loop= 0 ; loop < loop_count && not getSession().getKilled(); loop++)
{
switch (args[1]->result_type())
{
case REAL_RESULT:
(void) args[1]->val_real();
break;
case INT_RESULT:
(void) args[1]->val_int();
break;
case STRING_RESULT:
(void) args[1]->val_str(&tmp);
break;
case DECIMAL_RESULT:
(void) args[1]->val_decimal(&tmp_decimal);
break;
case ROW_RESULT:
default:
// This case should never be chosen
assert(0);
return 0;
}
}
return 0;
}
void BenchmarkFunction::print(String *str)
{
str->append(STRING_WITH_LEN("benchmark("));
args[0]->print(str);
str->append(',');
args[1]->print(str);
str->append(')');
}
plugin::Create_function<BenchmarkFunction> *benchmarkudf= NULL;
static int initialize(module::Context &context)
{
benchmarkudf= new plugin::Create_function<BenchmarkFunction>("benchmark");
context.add(benchmarkudf);
return 0;
}
DRIZZLE_DECLARE_PLUGIN
{
DRIZZLE_VERSION_ID,
"benchmark",
"1.0",
"Devananda van der Veen",
"Measure time for repeated calls to a function.",
PLUGIN_LICENSE_GPL,
initialize, /* Plugin Init */
NULL, /* depends */
NULL /* config options */
}
DRIZZLE_DECLARE_PLUGIN_END;
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