haproxy/include/common/config.h

/*
  include/common/config.h
  This files contains most of the user-configurable settings.

  Copyright (C) 2000-2007 Willy Tarreau - w@1wt.eu
  
  This library 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, version 2.1
  exclusively.

  This library 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 this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/

#ifndef _COMMON_CONFIG_H
#define _COMMON_CONFIG_H

#include <common/defaults.h>

/* this reduces the number of calls to select() by choosing appropriate
 * sheduler precision in milliseconds. It should be near the minimum
 * time that is needed by select() to collect all events. All timeouts
 * are rounded up by adding this value prior to pass it to select().
 */
#define SCHEDULER_RESOLUTION    9

/* CONFIG_HAP_MEM_OPTIM
 * This enables use of memory pools instead of malloc()/free(). There
 * is no reason to disable it, except perhaps for rare debugging.
 */
#ifndef   CONFIG_HAP_NO_MEM_OPTIM
#  define CONFIG_HAP_MEM_OPTIM
#endif /* CONFIG_HAP_NO_MEM_OPTIM */

/* CONFIG_HAP_MALLOC / CONFIG_HAP_CALLOC / CONFIG_HAP_FREE
 * This macro allows to replace the malloc function with another one.
 */
#ifdef CONFIG_HAP_MALLOC
#define MALLOC	CONFIG_HAP_MALLOC
#else
#define MALLOC	malloc
#endif

#ifdef CONFIG_HAP_CALLOC
#define CALLOC	CONFIG_HAP_CALLOC
#else
#define CALLOC	calloc
#endif

#ifdef CONFIG_HAP_FREE
#define FREE	CONFIG_HAP_FREE
#else
#define FREE	free
#endif


/* CONFIG_HAP_INLINE_FD_SET
 * This makes use of inline FD_* macros instead of calling equivalent
 * functions. Benchmarks on a Pentium-M show that using functions is
 * generally twice as fast. So it's better to keep this option unset.
 */
//#undef  CONFIG_HAP_INLINE_FD_SET

/* CONFIG_HAP_USE_REGPARM
 * This enables the use of register parameters for some functions where
 * it may improve performance by a measurable factor. This MUST NOT be
 * enabled on gcc < 3 because it is ignored for function pointers.
 */
#if CONFIG_HAP_USE_REGPARM && __GNUC__ >= 3
#define REGPRM1 __attribute__((regparm(1)))
#define REGPRM2 __attribute__((regparm(2)))
#define REGPRM3 __attribute__((regparm(3)))
#else
#define REGPRM1
#define REGPRM2
#define REGPRM3
#endif

/* By default, gcc does not inline large chunks of code, but we want it to
 * respect our choices.
 */
#if !defined(forceinline)
#if __GNUC__ < 3
#define forceinline inline
#else
#define forceinline inline __attribute__((always_inline))
#endif
#endif

#endif /* _COMMON_CONFIG_H */