boinc/lib/msg_log.h

83 lines
3.0 KiB
C++

// Berkeley Open Infrastructure for Network Computing
// http://boinc.berkeley.edu
// Copyright (C) 2005 University of California
//
// This is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation;
// either version 2.1 of the License, or (at your option) any later version.
//
// This software 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 Lesser General Public License for more details.
//
// To view the GNU Lesser General Public License visit
// http://www.gnu.org/copyleft/lesser.html
// or write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include <cstdio>
#include <cstdarg>
#ifdef _USING_FCGI_
#include "fcgi_stdio.h"
#endif
// the __attribute((format...)) tags are GCC extensions that let the compiler
// do like-checking on printf-like arguments
//
#if !defined(__GNUC__) && !defined(__attribute__)
#define __attribute__(x) /*nothing*/
#endif
#ifdef _USING_FCGI_
#define __attribute__(x) /*nothing*/
#endif
class MSG_LOG {
int debug_level;
int indent_level;
char spaces[80];
FILE* output;
public:
int pid;
MSG_LOG(FILE* output);
void enter_level(int = 1);
void leave_level() { enter_level(-1); }
MSG_LOG& operator++() { enter_level(); return *this; }
MSG_LOG& operator--() { leave_level(); return *this; }
void printf(int kind, const char* format, ...) __attribute__ ((format (printf, 3, 4)));
void printf_multiline(int kind, const char* str, const char* prefix_format, ...) __attribute__ ((format (printf, 4, 5)));
void printf_file(int kind, const char* filename, const char* prefix_format, ...) __attribute__ ((format (printf, 4, 5)));
void vprintf(int kind, const char* format, va_list va);
void vprintf_multiline(int kind, const char* str, const char* prefix_format, va_list va);
void vprintf_file(int kind, const char* filename, const char* prefix_format, va_list va);
protected:
virtual const char* v_format_kind(int kind) const = 0;
virtual bool v_message_wanted(int kind) const = 0;
};
// automatically ++/--MSG_LOG on scope entry / exit.
// See lib/msg_log.C for commentary
//
class SCOPE_MSG_LOG {
MSG_LOG& messages;
int kind;
public:
SCOPE_MSG_LOG(MSG_LOG& messages_, int kind_) : messages(messages_), kind(kind_)
{ ++messages; }
~SCOPE_MSG_LOG() { --messages; }
SCOPE_MSG_LOG& operator++() { ++messages; return *this; }
SCOPE_MSG_LOG& operator--() { --messages; return *this; }
void printf(const char* format, ...) __attribute__ ((format (printf, 2, 3)));
void printf_multiline(const char* str, const char* prefix_format, ...) __attribute__ ((format (printf, 3, 4)));
void printf_file(const char* filename, const char* prefix_format, ...) __attribute__ ((format (printf, 3, 4)));
};