125 lines
2.7 KiB
C++
125 lines
2.7 KiB
C++
/*
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----
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This file is part of SECONDO.
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Copyright (C) 2004-2009, University in Hagen, Faculty of Mathematics
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and Computer Science, Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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Sept. 2009, M. Spiekermann, a class for managing trace messages
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*/
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#ifndef SEC_TRACE_H
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#define SEC_TRACE_H
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#include "TraceMacros.h"
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#define VAL(arg) #arg, arg
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#include <iostream>
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#include <string>
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#include <sstream>
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class Trace {
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public:
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Trace(const std::string& s, std::ostream& os = std::cerr) :
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trc(false),
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prefix(s),
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dest(os),
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fn("???"),
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lmax(1)
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{}
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void enter(const std::string& function) {
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if (trc) {
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fn = function;
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pre() << "Start" << std::endl;
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}
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}
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void on() { trc = true;
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dest << "* trace on [" << prefix << "]" << std::endl;
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}
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void off() { trc = false;
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dest << "* trace off [" << prefix << "]" << std::endl;
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}
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void level(int n) { lmax = n; }
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template <typename T>
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inline void out(const T& v, int level=1) {
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if (trc && (level <= lmax))
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pre() << v << std::endl;
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}
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template <typename T>
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inline void show(const std::string& var, const T& value, int level=1) {
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if (trc && (level <= lmax))
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pre() << var << " = " << value << std::endl;
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}
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inline void flush(int level=1) {
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if (trc && (level <= lmax)) {
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pre() << ss.str() << std::endl;
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}
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ss.str("");
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ss.clear();
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}
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inline std::stringstream& add() { return ss; }
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private:
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inline std::ostream& pre() {
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return dest << prefix << ":" << fn << ":";
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}
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bool trc;
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const std::string prefix;
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std::ostream& dest;
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std::string fn;
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std::stringstream ss;
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int lmax;
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};
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/*
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Auxiliary functions for debugging
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*/
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std::string Array2HexStr(const char* data, size_t size, size_t offset = 0);
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std::string Array2Str(const char* data, size_t size);
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/*
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The functions above converts the data behind a char pointer into a string value.
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*/
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template<typename T>
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inline std::string Var2HexStr(const T& v)
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{
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return Array2HexStr( (char*)&v , sizeof(T), 0 );
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}
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#endif
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