Move all under modules/ca
This commit is contained in:
Ralph Lange
363
modules/ca/src/client/syncgrp.cpp
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363
modules/ca/src/client/syncgrp.cpp
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/*************************************************************************\
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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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/*
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* Author: Jeffrey O. Hill
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* hill@luke.lanl.gov
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* (505) 665 1831
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*/
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#define epicsAssertAuthor "Jeff Hill johill@lanl.gov"
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#define epicsExportSharedSymbols
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#include "iocinf.h"
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#include "oldAccess.h"
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#include "syncGroup.h"
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/*
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* ca_sg_create()
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*/
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extern "C" int epicsShareAPI ca_sg_create ( CA_SYNC_GID * pgid )
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{
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ca_client_context * pcac;
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int caStatus;
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CASG * pcasg;
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caStatus = fetchClientContext ( &pcac );
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if ( caStatus != ECA_NORMAL ) {
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return caStatus;
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}
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try {
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epicsGuard < epicsMutex > guard ( pcac->mutexRef() );
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pcasg = new ( pcac->casgFreeList ) CASG ( guard, *pcac );
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*pgid = pcasg->getId ();
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return ECA_NORMAL;
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}
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catch ( std::bad_alloc & ) {
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return ECA_ALLOCMEM;
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}
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catch ( ... ) {
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return ECA_INTERNAL;
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}
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}
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int ca_sync_group_destroy ( CallbackGuard & cbGuard, epicsGuard < epicsMutex > & guard,
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ca_client_context & cac, const CA_SYNC_GID gid )
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{
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int caStatus;
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CASG * pcasg = cac.lookupCASG ( guard, gid );
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if ( pcasg ) {
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pcasg->destructor ( cbGuard, guard );
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cac.casgFreeList.release ( pcasg );
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caStatus = ECA_NORMAL;
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}
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else {
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caStatus = ECA_BADSYNCGRP;
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}
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return caStatus;
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}
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/*
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* ca_sg_delete()
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*/
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extern "C" int epicsShareAPI ca_sg_delete ( const CA_SYNC_GID gid )
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{
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ca_client_context * pcac;
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int caStatus = fetchClientContext ( & pcac );
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if ( caStatus == ECA_NORMAL ) {
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if ( pcac->pCallbackGuard.get() &&
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pcac->createdByThread == epicsThreadGetIdSelf () ) {
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epicsGuard < epicsMutex > guard ( pcac->mutex );
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caStatus = ca_sync_group_destroy ( *pcac->pCallbackGuard.get(),
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guard, *pcac, gid );
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}
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else {
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//
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// we will definately stall out here if all of the
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// following are true
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//
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// o user creates non-preemtive mode client library context
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// o user doesnt periodically call a ca function
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// o user calls this function from an auxiillary thread
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//
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CallbackGuard cbGuard ( pcac->cbMutex );
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epicsGuard < epicsMutex > guard ( pcac->mutex );
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caStatus = ca_sync_group_destroy ( cbGuard, guard, *pcac, gid );
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}
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}
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return caStatus;
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}
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void sync_group_reset ( ca_client_context & client, CASG & sg )
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{
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if ( client.pCallbackGuard.get() &&
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client.createdByThread == epicsThreadGetIdSelf () ) {
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epicsGuard < epicsMutex > guard ( client.mutex );
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sg.reset ( *client.pCallbackGuard.get(), guard );
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}
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else {
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//
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// we will definately stall out here if all of the
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// following are true
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//
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// o user creates non-preemtive mode client library context
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// o user doesnt periodically call a ca function
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// o user calls this function from an auxiillary thread
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//
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CallbackGuard cbGuard ( client.cbMutex );
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epicsGuard < epicsMutex > guard ( client.mutex );
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sg.reset ( cbGuard, guard );
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}
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}
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//
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// ca_sg_block ()
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//
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// !!!! This routine is only visible in the old interface - or in a new ST interface.
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// !!!! In the old interface we restrict thread attach so that calls from threads
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// !!!! other than the initializing thread are not allowed if preemptive callback
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// !!!! is disabled. This prevents the preemptive callback lock from being released
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// !!!! by other threads than the one that locked it.
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//
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extern "C" int epicsShareAPI ca_sg_block (
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const CA_SYNC_GID gid, ca_real timeout )
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{
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ca_client_context *pcac;
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int status = fetchClientContext ( &pcac );
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if ( status == ECA_NORMAL ) {
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CASG * pcasg;
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{
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epicsGuard < epicsMutex > guard ( pcac->mutex );
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pcasg = pcac->lookupCASG ( guard, gid );
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if ( pcasg ) {
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status = pcasg->block (
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pcac->pCallbackGuard.get (), guard, timeout );
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}
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else {
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status = ECA_BADSYNCGRP;
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}
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}
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if ( pcasg ) {
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sync_group_reset ( *pcac, *pcasg );
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}
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}
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return status;
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}
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/*
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* ca_sg_reset
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*/
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extern "C" int epicsShareAPI ca_sg_reset ( const CA_SYNC_GID gid )
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{
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ca_client_context *pcac;
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int caStatus = fetchClientContext (&pcac);
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if ( caStatus == ECA_NORMAL ) {
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CASG * pcasg;
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{
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epicsGuard < epicsMutex > guard ( pcac->mutex );
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pcasg = pcac->lookupCASG ( guard, gid );
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}
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if ( pcasg ) {
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sync_group_reset ( *pcac, *pcasg );
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caStatus = ECA_NORMAL;
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}
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else {
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caStatus = ECA_BADSYNCGRP;
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}
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}
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return caStatus;
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}
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/*
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* ca_sg_stat
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*/
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extern "C" int epicsShareAPI ca_sg_stat ( const CA_SYNC_GID gid )
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{
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ca_client_context * pcac;
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int caStatus = fetchClientContext ( &pcac );
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if ( caStatus != ECA_NORMAL ) {
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return caStatus;
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}
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epicsGuard < epicsMutex > guard ( pcac->mutexRef() );
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CASG * pcasg = pcac->lookupCASG ( guard, gid );
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if ( ! pcasg ) {
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::printf ( "Bad Sync Group Id\n");
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return ECA_BADSYNCGRP;
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}
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pcasg->show ( guard, 1000u );
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return ECA_NORMAL;
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}
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/*
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* ca_sg_test
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*/
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extern "C" int epicsShareAPI ca_sg_test ( const CA_SYNC_GID gid )
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{
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ca_client_context * pcac;
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int caStatus = fetchClientContext ( &pcac );
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if ( caStatus == ECA_NORMAL ) {
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epicsGuard < epicsMutex > guard ( pcac->mutexRef() );
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CASG * pcasg = pcac->lookupCASG ( guard, gid );
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if ( pcasg ) {
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bool isComplete;
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if ( pcac->pCallbackGuard.get() &&
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pcac->createdByThread == epicsThreadGetIdSelf () ) {
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epicsGuard < epicsMutex > guard ( pcac->mutex );
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isComplete = pcasg->ioComplete ( *pcac->pCallbackGuard.get(), guard );
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}
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else {
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//
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// we will definately stall out here if all of the
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// following are true
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//
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// o user creates non-preemtive mode client library context
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// o user doesnt periodically call a ca function
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// o user calls this function from an auxiillary thread
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//
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CallbackGuard cbGuard ( pcac->cbMutex );
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epicsGuard < epicsMutex > guard ( pcac->mutex );
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isComplete = pcasg->ioComplete ( cbGuard, guard );
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}
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if ( isComplete ) {
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caStatus = ECA_IODONE;
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}
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else{
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caStatus = ECA_IOINPROGRESS;
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}
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}
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else {
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caStatus = ECA_BADSYNCGRP;
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}
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}
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return caStatus;
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}
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/*
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* ca_sg_array_put()
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*/
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extern "C" int epicsShareAPI ca_sg_array_put ( const CA_SYNC_GID gid, chtype type,
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arrayElementCount count, chid pChan, const void *pValue )
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{
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ca_client_context *pcac;
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int caStatus = fetchClientContext ( &pcac );
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if ( caStatus != ECA_NORMAL ) {
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return caStatus;
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}
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epicsGuard < epicsMutex > guard ( pcac->mutexRef() );
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CASG * const pcasg = pcac->lookupCASG ( guard, gid );
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if ( ! pcasg ) {
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return ECA_BADSYNCGRP;
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}
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try {
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pcasg->put ( guard, pChan, type,
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static_cast < unsigned > ( count ), pValue );
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return ECA_NORMAL;
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}
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catch ( cacChannel::badString & )
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{
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return ECA_BADSTR;
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}
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catch ( cacChannel::badType & )
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{
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return ECA_BADTYPE;
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}
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catch ( cacChannel::outOfBounds & )
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{
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return ECA_BADCOUNT;
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}
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catch ( cacChannel::noWriteAccess & )
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{
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return ECA_NOWTACCESS;
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}
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catch ( cacChannel::notConnected & )
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{
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return ECA_DISCONN;
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}
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catch ( cacChannel::unsupportedByService & )
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{
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return ECA_UNAVAILINSERV;
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}
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catch ( cacChannel::requestTimedOut & )
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{
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return ECA_TIMEOUT;
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}
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catch ( std::bad_alloc & )
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{
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return ECA_ALLOCMEM;
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}
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catch ( ... )
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{
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return ECA_INTERNAL;
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}
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}
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/*
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* ca_sg_array_get()
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*/
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extern "C" int epicsShareAPI ca_sg_array_get ( const CA_SYNC_GID gid, chtype type,
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arrayElementCount count, chid pChan, void *pValue )
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{
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ca_client_context *pcac;
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int caStatus = fetchClientContext ( &pcac );
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if ( caStatus != ECA_NORMAL ) {
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return caStatus;
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}
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epicsGuard < epicsMutex > guard ( pcac->mutexRef() );
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CASG * const pcasg = pcac->lookupCASG ( guard, gid );
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if ( ! pcasg ) {
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return ECA_BADSYNCGRP;
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}
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try {
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pcasg->get ( guard, pChan, type,
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static_cast < unsigned > ( count ), pValue );
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return ECA_NORMAL;
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}
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catch ( cacChannel::badString & )
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{
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return ECA_BADSTR;
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}
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catch ( cacChannel::badType & )
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{
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return ECA_BADTYPE;
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}
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catch ( cacChannel::outOfBounds & )
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{
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return ECA_BADCOUNT;
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}
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catch ( cacChannel::noReadAccess & )
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{
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return ECA_NORDACCESS;
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}
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catch ( cacChannel::notConnected & )
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{
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return ECA_DISCONN;
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}
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catch ( cacChannel::unsupportedByService & )
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{
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return ECA_UNAVAILINSERV;
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}
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catch ( std::bad_alloc & )
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{
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return ECA_ALLOCMEM;
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}
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catch ( ... )
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{
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return ECA_INTERNAL;
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}
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}
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