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Viewing changes to drizzled/optimizer/cost_vector.h

  • Committer: Olaf van der Spek
  • Date: 2011-10-24 21:23:54 UTC
  • mto: This revision was merged to the branch mainline in revision 2449.
  • Revision ID: olafvdspek@gmail.com-20111024212354-j32gbc2sbsw0985q
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drizzled/optimizer/cost_vector.h
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 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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#ifndef DRIZZLED_OPTIMIZER_COST_VECTOR_H
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#define DRIZZLED_OPTIMIZER_COST_VECTOR_H
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namespace drizzled
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{
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namespace optimizer
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{
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class CostVector
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{
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#pragma once
 
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namespace drizzled {
 
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namespace optimizer {
 
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class CostVector 
 
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{
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public:
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  CostVector() :
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    io_count(0.0),
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    import_cost(0.0)
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  {}
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  double total_cost()
 
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  double total_cost() const
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  {
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    return IO_COEFF*io_count*avg_io_cost + CPU_COEFF * cpu_cost +
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      MEM_COEFF*mem_cost + IMPORT_COEFF*import_cost;
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} /* namespace optimizer */
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} /* namespace drizzled */
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#endif /* DRIZZLED_OPTIMIZER_COST_VECTOR_H */