lock_ops.c
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 /* 
  * Copyright (C) 2007 iptelorg GmbH
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
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 /*!
  * \file
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  * \brief Kamailio core ::  lock operations init
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  * \ingroup core
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  *
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  * Module: \ref core
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  *
  * Reference:
  * - \ref LockingDoc
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  */
 
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 /*!
  * \page LockingDoc Documentation of locking
  * \verbinclude locking.txt
  *
  */
 
 
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 #include "ut.h"
 #include "dprint.h"
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 #include "lock_ops.h"
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 /* returns 0 on success, -1 on error */
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 int init_lock_ops(void)
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 {
 #ifdef USE_FUTEX
 	int os_ver;
 	
 	os_ver=get_sys_version(0, 0, 0);
 	if (os_ver < 0x020546 ){ /* if ver < 2.5.70 */
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 		LM_CRIT("old kernel: compiled with FUTEX support which is not"
 				" present in the running kernel (try  2.6+)\n");
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 		return -1;
 	}
 #endif
 	return 0;
 }
 
 
 
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 void destroy_lock_ops(void)
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 {
 }