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mc_tools : add access # proposed/accepted. Add debug_stream

- debug_stream : conditional ostream with a lambda condition for debug.
This commit is contained in:
Olivier Parcollet 2014-02-28 17:20:55 +01:00
parent a1a29d6c85
commit 9911b18363
2 changed files with 72 additions and 0 deletions

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@ -96,6 +96,8 @@ namespace triqs { namespace mc_tools {
void reject() { reject_(); }
double acceptance_rate() const { return acceptance_rate_;}
uint64_t n_proposed_config () const { return NProposed;}
uint64_t n_accepted_config () const { return Naccepted;}
void collect_statistics(boost::mpi::communicator const & c) {
uint64_t nacc_tot=0, nprop_tot=1;

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@ -0,0 +1,70 @@
/*******************************************************************************
*
* TRIQS: a Toolbox for Research in Interacting Quantum Systems
*
* Copyright (C) 2014 by O. Parcollet
*
* TRIQS 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, either version 3 of the License, or (at your option) any later
* version.
*
* TRIQS 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
* TRIQS. If not, see <http://www.gnu.org/licenses/>.
*
******************************************************************************/
#pragma once
#include <ostream>
#include <sstream>
namespace triqs {
namespace utility {
/**
* \brief Output stream with a condition
*
* This class behaves pretty much like a standard ostream
* except that the printing is "under" condition
*
* Example:
*
* debug_stream rep( std::cerr, [&mc](){ return mc.config_id() %100 == 0;}
*
*/
class debug_stream {
std::ostream* out;
std::function<bool()> condition;
public:
debug_stream(std::ostream* out_, std::function<bool()> condition) : out(out_), condition(condition) {}
debug_stream(std::ostream* out_) : out(out_) {}
template <class T> debug_stream& operator<<(T const& x) {
#ifdef TRIQS_DEBUG
if (condition && condition()) (*out) << x;
#endif
return *this;
}
// this is the type of std::cout
typedef std::basic_ostream<char, std::char_traits<char>> CoutType;
// this is the function signature of std::endl
typedef CoutType& (*StandardEndLine)(CoutType&);
// define an operator<< to take in std::endl
debug_stream& operator<<(StandardEndLine manip) {
// call the function, but we cannot return it's value
#ifdef TRIQS_DEBUG
if (condition && condition()) manip(*out);
#endif
return *this;
}
};
}
}