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124 lines (94 loc) · 3.64 KB
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/**
* p4sync
* http://snarfed.org/p4sync
*
* Copyright 2005 Ryan Barrett <p4sync@ryanb.org>
*
* @file trace.cpp
*
* Implements the ctrace class. For more information, see trace.h.
*
* 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; either version 2 of the License, or (at your option)
* any later version.
*
* 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., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "trace.h"
#include <fstream>
#include <iostream>
using namespace std;
/*****************************************************************************
* INITIALIZE STATIC MEMBERS
*****************************************************************************/
const string ctrace::kmaster_setting("trace.master");
const string ctrace::klogfile_setting("trace.file");
/*****************************************************************************
* METHODS
*****************************************************************************/
// ctor
//
// the file version, uses the filename passed in
ctrace::ctrace(const string &filename) :
file(filename.c_str(), ios::out | ios::app), // only append!
out(file)
{
// assert(filename != "");
// wipe the file at the beginning (since trace should append to it)
fstream wipe(filename.c_str(), ios::out | ios::trunc);
}
// acquire manipulator (parameterized)
//
// only acquires the trace stream if tracing is on *and* the given module
// setting is true. declared as a friend of the ctrace class.
ctrace &operator<< (ctrace &trace, const acquire &a)
{
trace.module = a.module;
if (!trace.is_on(a.module))
return trace; // this trace module is turned off
trace.out << a.module << ": ";
return trace;
}
// release manipulator
//
// releases trace and makes it available to other modules. declared as a friend
// of the ctrace class.
ctrace &operator<< (ctrace &trace, const release &r)
{
if (!trace.is_on(trace.module))
return trace;
trace.module = "";
trace.out << endl;
return trace;
}
/*****************************************************************************
* TEST MAIN
*****************************************************************************/
/*
int main(int argc, char **argv)
{
csettings::instance().set(ctrace::kmaster_setting, true);
// csettings::instance().set(ctrace::klogfile_setting, "trace_test.log");
ctrace::instance() << acquire() << "asdf ";
ctrace::instance() << "this should print ";
ctrace::instance() << 2.34 << " " << 3;
double asdf = 2.999999999999999999999999999;
ctrace::instance() << asdf;
ctrace::instance() << " but this (below) shouldn't " << release();
csettings::instance().set(ctrace::kmaster_setting, false);
ctrace::instance() << acquire() << "you should not see this!!!" << release();
csettings::instance().set(ctrace::kmaster_setting, true);
ctrace::instance() << acquire() << "but this should!!!" << release();
ctrace::instance() << acquire("trace_test") << "this should only print if "
<< "the trace_test setting in the dotfile is true."
<< release();
}
*/