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rf_mcpair.h revision 1.1 
      1 /*	$NetBSD: rf_mcpair.h,v 1.1 1998/11/13 04:20:31 oster Exp $	*/
      2 /*
      3  * Copyright (c) 1995 Carnegie-Mellon University.
      4  * All rights reserved.
      5  *
      6  * Author: Mark Holland
      7  *
      8  * Permission to use, copy, modify and distribute this software and
      9  * its documentation is hereby granted, provided that both the copyright
     10  * notice and this permission notice appear in all copies of the
     11  * software, derivative works or modified versions, and any portions
     12  * thereof, and that both notices appear in supporting documentation.
     13  *
     14  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     15  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     16  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     17  *
     18  * Carnegie Mellon requests users of this software to return to
     19  *
     20  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     21  *  School of Computer Science
     22  *  Carnegie Mellon University
     23  *  Pittsburgh PA 15213-3890
     24  *
     25  * any improvements or extensions that they make and grant Carnegie the
     26  * rights to redistribute these changes.
     27  */
     28 
     29 /* rf_mcpair.h
     30  * see comments in rf_mcpair.c
     31  */
     32 
     33 #ifndef _RF__RF_MCPAIR_H_
     34 #define _RF__RF_MCPAIR_H_
     35 
     36 #include "rf_types.h"
     37 #include "rf_threadstuff.h"
     38 
     39 struct RF_MCPair_s {
     40   RF_DECLARE_MUTEX(mutex)
     41   RF_DECLARE_COND(cond)
     42   int           flag;
     43   RF_MCPair_t  *next;
     44 };
     45 
     46 #ifdef KERNEL
     47 #ifndef __NetBSD__
     48 #define RF_WAIT_MCPAIR(_mcp)  mpsleep(&((_mcp)->flag), PZERO, "mcpair", 0, (void *) simple_lock_addr((_mcp)->mutex), MS_LOCK_SIMPLE)
     49 #else
     50 #define RF_WAIT_MCPAIR(_mcp)  tsleep(&((_mcp)->flag), PRIBIO | PCATCH, "mcpair", 0)
     51 #endif
     52 #else /* KERNEL */
     53 #define RF_WAIT_MCPAIR(_mcp)  RF_WAIT_COND((_mcp)->cond, (_mcp)->mutex)
     54 #endif /* KERNEL */
     55 
     56 int rf_ConfigureMCPair(RF_ShutdownList_t **listp);
     57 RF_MCPair_t *rf_AllocMCPair(void);
     58 void rf_FreeMCPair(RF_MCPair_t *t);
     59 void rf_MCPairWakeupFunc(RF_MCPair_t *t);
     60 
     61 #endif /* !_RF__RF_MCPAIR_H_ */
     62