55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/*************************************************************************\
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* Copyright (c) 2002 The University of Chicago, as Operator of Argonne
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* National Laboratory.
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* Copyright (c) 2002 The Regents of the University of California, as
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* Operator of Los Alamos National Laboratory.
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* EPICS BASE Versions 3.13.7
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* and higher are distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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\*************************************************************************/
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/*asTrapWrite.h*/
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/* Author: Marty Kraimer Date: 07NOV2000 */
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#ifndef INCasTrapWriteh
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#define INCasTrapWriteh
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#include "shareLib.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct asTrapWriteMessage {
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const char *userid;
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const char *hostid;
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void *serverSpecific;
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void *userPvt;
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} asTrapWriteMessage;
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typedef void *asTrapWriteId;
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typedef void(*asTrapWriteListener)(asTrapWriteMessage *pmessage,int after);
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epicsShareFunc asTrapWriteId epicsShareAPI asTrapWriteRegisterListener(
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asTrapWriteListener func);
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epicsShareFunc void epicsShareAPI asTrapWriteUnregisterListener(
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asTrapWriteId id);
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/*
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* asTrapWriteListener is called before and after the write is performed.
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* The listener can set userPvt on the before call and retrieve it after
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* after = (0,1) (before,after) the put.
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*
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* Each asTrapWriteMessage can change or may be deleted after
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* the user's asTrapWriteListener returns
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*
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* asTrapWriteListener delays the associated server thread so it must not
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* do anything that causes to to block.
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*/
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#ifdef __cplusplus
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}
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#endif
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#endif /*INCasTrapWriteh*/
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