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/* $OpenBSD: rf_callback.c,v 1.2 1999/02/16 00:02:24 niklas Exp $ */
/* $NetBSD: rf_callback.c,v 1.3 1999/02/05 00:06:06 oster Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Jim Zelenka
*
* 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.
*/
/*****************************************************************************************
*
* callback.c -- code to manipulate callback descriptor
*
****************************************************************************************/
#include "rf_types.h"
#include "rf_threadstuff.h"
#include "rf_callback.h"
#include "rf_debugMem.h"
#include "rf_freelist.h"
#include "rf_shutdown.h"
static RF_FreeList_t *rf_callback_freelist;
#define RF_MAX_FREE_CALLBACK 64
#define RF_CALLBACK_INC 4
#define RF_CALLBACK_INITIAL 4
static void rf_ShutdownCallback(void *);
static void
rf_ShutdownCallback(ignored)
void *ignored;
{
RF_FREELIST_DESTROY(rf_callback_freelist, next, (RF_CallbackDesc_t *));
}
int
rf_ConfigureCallback(listp)
RF_ShutdownList_t **listp;
{
int rc;
RF_FREELIST_CREATE(rf_callback_freelist, RF_MAX_FREE_CALLBACK,
RF_CALLBACK_INC, sizeof(RF_CallbackDesc_t));
if (rf_callback_freelist == NULL)
return (ENOMEM);
rc = rf_ShutdownCreate(listp, rf_ShutdownCallback, NULL);
if (rc) {
RF_ERRORMSG3("Unable to add to shutdown list file %s line %d rc=%d\n", __FILE__,
__LINE__, rc);
rf_ShutdownCallback(NULL);
return (rc);
}
RF_FREELIST_PRIME(rf_callback_freelist, RF_CALLBACK_INITIAL, next,
(RF_CallbackDesc_t *));
return (0);
}
RF_CallbackDesc_t *
rf_AllocCallbackDesc()
{
RF_CallbackDesc_t *p;
RF_FREELIST_GET(rf_callback_freelist, p, next, (RF_CallbackDesc_t *));
return (p);
}
void
rf_FreeCallbackDesc(p)
RF_CallbackDesc_t *p;
{
RF_FREELIST_FREE(rf_callback_freelist, p, next);
}
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