// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2008 University of California
//
// BOINC 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 3 of the License, or (at your option) any later version.
//
// BOINC 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.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC.  If not, see <http://www.gnu.org/licenses/>.

#ifndef CLIENT_MSG_LOG_H
#define CLIENT_MSG_LOG_H

// write messages ONLY as follows:
// if (log_flags.X) {
//     msg_printf();
// }

#include <algorithm>
#include <deque>
#include <string>
#include <string.h>

#include "log_flags.h"

/// stores a message in memory, where it can be retrieved via RPC

struct MESSAGE_DESC {
    char project_name[256];
    int priority;
    int timestamp;
    int seqno;
    std::string message;
};

#define MAX_SAVED_MESSAGES 2000

// a cache of MAX_SAVED_MESSAGES most recent messages,
// stored in newest-first order
//
struct MESSAGE_DESCS {
    std::deque<MESSAGE_DESC*> msgs;
    void insert(struct PROJECT *p, int priority, int now, char* msg);
    void write(int seqno, class MIOFILE&);
    int highest_seqno();
};

extern MESSAGE_DESCS message_descs;

// 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

/// Show a message, preceded by timestamp and project name

extern void msg_printf(struct PROJECT *p, int priority, const char *fmt, ...) __attribute__ ((format (printf, 3, 4)));

#endif