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/* $OpenBSD: rf_mcpair.h,v 1.1 1999/01/11 14:29:29 niklas Exp $ */
/* $NetBSD: rf_mcpair.h,v 1.1 1998/11/13 04:20:31 oster Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Mark Holland
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/* rf_mcpair.h
* see comments in rf_mcpair.c
*/
#ifndef _RF__RF_MCPAIR_H_
#define _RF__RF_MCPAIR_H_
#include "rf_types.h"
#include "rf_threadstuff.h"
struct RF_MCPair_s {
RF_DECLARE_MUTEX(mutex)
RF_DECLARE_COND(cond)
int flag;
RF_MCPair_t *next;
};
#ifdef KERNEL
#if !defined(__NetBSD__) && !defined(__OpenBSD__)
#define RF_WAIT_MCPAIR(_mcp) mpsleep(&((_mcp)->flag), PZERO, "mcpair", 0, (void *) simple_lock_addr((_mcp)->mutex), MS_LOCK_SIMPLE)
#else
#define RF_WAIT_MCPAIR(_mcp) tsleep(&((_mcp)->flag), PRIBIO | PCATCH, "mcpair", 0)
#endif
#else /* KERNEL */
#define RF_WAIT_MCPAIR(_mcp) RF_WAIT_COND((_mcp)->cond, (_mcp)->mutex)
#endif /* KERNEL */
int rf_ConfigureMCPair(RF_ShutdownList_t **listp);
RF_MCPair_t *rf_AllocMCPair(void);
void rf_FreeMCPair(RF_MCPair_t *t);
void rf_MCPairWakeupFunc(RF_MCPair_t *t);
#endif /* !_RF__RF_MCPAIR_H_ */
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