optimizer_trace.h File Reference

#include <array>
#include <cassert>
#include <deque>
#include <ostream>
#include "sql/opt_trace_context.h"
#include "sql/sql_lex.h"

Go to the source code of this file.

Classes
class	TraceBuffer
	This class is used for storing unstructured optimizer trace text (as used by the Hypergraph optimizer). More...
class	UnstructuredTrace
	Trace in the form of plain text (i.e. More...

Macros
#define	SQL_JOIN_OPTIMIZER_OPTIMIZER_TRACE_   1

Functions
std::ostream &	Trace (THD *thd)
	Fetch the ostream that we write optimizer trace into. More...
bool	TraceStarted (THD *thd)

Macro Definition Documentation

SQL_JOIN_OPTIMIZER_OPTIMIZER_TRACE_

#define SQL_JOIN_OPTIMIZER_OPTIMIZER_TRACE_   1

Function Documentation

Trace()

std::ostream & Trace ( THD *  thd )

inline

Fetch the ostream that we write optimizer trace into.

TraceStarted()

bool TraceStarted ( THD *  thd )

inline

Returns

'true' if unstructured optimizer trace (as used by Hypergraph) is started.