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100 lines
3.9 KiB
C
100 lines
3.9 KiB
C
// log_meta.h - functions & macros for logging
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/*
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* Copyright (c) 2001-2003 Will Day <willday@hpgx.net>
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*
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* This file is part of Metamod.
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*
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* Metamod is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* Metamod is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Metamod; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* In addition, as a special exception, the author gives permission to
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* link the code of this program with the Half-Life Game Engine ("HL
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* Engine") and Modified Game Libraries ("MODs") developed by Valve,
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* L.L.C ("Valve"). You must obey the GNU General Public License in all
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* respects for all of the code used other than the HL Engine and MODs
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* from Valve. If you modify this file, you may extend this exception
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* to your version of the file, but you are not obligated to do so. If
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* you do not wish to do so, delete this exception statement from your
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* version.
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*
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*/
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#ifndef LOG_META_H
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#define LOG_META_H
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#include "enginecallbacks.h" // ALERT, etc
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#include "sdk_util.h" // UTIL_VarArgs, etc
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// Debug logging.
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//
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// This is done as a macro, rather than a function. This way, you can add
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// DEBUG statements all over, without worrying about performance
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// implications. If the debugging level is set low, all those statements
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// will only generate a simple float/int compare each; if we were to use a
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// function instead of a macro, it would end up wasting a lot of cpu cycles
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// calling/returning from the function every time. With a fair number of
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// DEBUG statements, or if they're placed in frequently excuted code, the
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// overhead of the wasted function calls could significantly impact server
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// performance.
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//
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// For this reason, we also compare directly to the float value of the
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// cvar, rather than calling CVAR_GET_FLOAT() and thus generating a string
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// compare for each DEBUG statement.
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//
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// Called as:
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// META_DEBUG(3, ("return code: %d", ret));
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//
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// Note the double parens, and the missing parens around "args" in the
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// macro itself. Note also the "do..while(0)" loop wrapping the
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// statements, so they become a single statement when expanded, necessary
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// for times when it might be called as a single-statement result of an
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// else (or other flow control).
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//
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// As suggested by Jussi Kivilinna: Use "if(meta_debug.value < level); else
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// DO(something);" style because "meta_debug.value < level" is in most common
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// case "false". Check disasm, contitional jumps are predicted not to be
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// taken by CPU.
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//
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// Yes, it's all a bit of a hack.
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#define META_DEBUG(level, args) \
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do { if(meta_debug.value < level) break; else ALERT(at_logged, "[META] (debug:%d) %s\n", level, UTIL_VarArgs args ); } while(0)
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// max buffer size for printed messages
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#define MAX_LOGMSG_LEN 1024
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// max buffer size for client messages
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#define MAX_CLIENTMSG_LEN 128
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extern cvar_t meta_debug;
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// META_DEV provides debug logging via the cvar "developer" (when set to 1)
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// and uses a function call rather than a macro as it's really intended to
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// be used only during startup, before meta_debug has been set from reading
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// server.cfg.
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// NOTE: META_DEV has now been mostly obsoleted in the code.
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void META_CONS(char *fmt, ...);
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void META_DEV(char *fmt, ...);
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void META_INFO(char *fmt, ...);
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void META_WARNING(char *fmt, ...);
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void META_ERROR(char *fmt, ...);
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void META_LOG(char *fmt, ...);
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void META_CLIENT(edict_t *pEntity, char *fmt, ...);
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void flush_ALERT_buffer(void);
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#endif /* LOG_META_H */
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