Add enableCache() and flushCache().
This commit is contained in:
kevin
parent
4459a0b130
commit
15fb486c4b
159
cwUi.cpp
159
cwUi.cpp
@ -77,25 +77,34 @@ namespace cw
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typedef struct ui_str
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{
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unsigned eleAllocN; // size of eleA[]
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unsigned eleN; // count of ele's in use
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ele_t** eleA; // eleA[ eleAllocN ]
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uiCallback_t uiCbFunc; // app. cb func
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void* uiCbArg; // app. cb func arg.
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sendCallback_t sendCbFunc;
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void* sendCbArg;
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appIdMapRecd_t* appIdMap; // map of application parent/child/js id's
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char* buf; // buf[bufN] output message formatting buffer
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unsigned bufN; //
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char* recvBuf;
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unsigned recvBufN;
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unsigned recvBufIdx;
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unsigned recvShiftN;
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object_t* uiRsrc;
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unsigned eleAllocN; // size of eleA[]
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unsigned eleN; // count of ele's in use
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ele_t** eleA; // eleA[ eleAllocN ]
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uiCallback_t uiCbFunc; // app. cb func
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void* uiCbArg; // app. cb func arg.
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sendCallback_t sendCbFunc;
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void* sendCbArg;
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appIdMapRecd_t* appIdMap; // map of application parent/child/js id's
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char* buf; // buf[bufN] output message formatting buffer
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unsigned bufN; //
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char* recvBuf;
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unsigned recvBufN;
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unsigned recvBufIdx;
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unsigned recvShiftN;
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object_t* uiRsrc;
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unsigned* sessA; // sessA[ sessN ] array of wsSessId's
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unsigned sessN;
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unsigned sessAllocN;
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unsigned* sessA; // sessA[ sessN ] array of wsSessId's
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unsigned sessN;
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unsigned sessAllocN;
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bool msgCacheEnableFl;
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unsigned msgCacheSessId;
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char* msgCache;
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unsigned msgCacheAllocN;
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unsigned msgCacheDataN;
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unsigned msgCacheN;
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unsigned msgCacheMsgN;
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} ui_t;
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@ -317,28 +326,100 @@ namespace cw
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return nullptr;
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}
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rc_t _websockSend( ui_t* p, unsigned wsSessId, const char* msg )
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rc_t _cache_flush( ui_t* p )
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{
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rc_t rc = kOkRC;
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//return websock::send( websockSrv::websockHandle( p->wssH ), kUiProtocolId, wsSessId, msg, strlen(msg) );
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if( p->sendCbFunc != nullptr )
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if( p->msgCacheMsgN > 0 )
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{
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unsigned msgByteN = msg==nullptr ? 0 : strlen(msg);
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assert( p->msgCacheN <= p->msgCacheDataN );
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p->msgCache[ p->msgCacheN+0 ] = ']';
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p->msgCache[ p->msgCacheN+1 ] = '}';
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p->msgCache[ p->msgCacheN+2 ] = 0;
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if( wsSessId != kInvalidId )
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rc = p->sendCbFunc( p->sendCbArg, wsSessId, msg, msgByteN );
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else
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{
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for(unsigned i=0; i<p->sessN; ++i)
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rc = p->sendCbFunc( p->sendCbArg, p->sessA[i], msg, msgByteN );
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rc = p->sendCbFunc( p->sendCbArg, p->msgCacheSessId, p->msgCache, strlen(p->msgCache) );
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p->msgCacheN = snprintf(p->msgCache,p->msgCacheAllocN,"{\"op\":\"cache\", \"array\": [");
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p->msgCacheSessId = kInvalidId;
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p->msgCacheMsgN = 0;
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}
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}
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return rc;
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}
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rc_t _cache_send( ui_t* p, unsigned wsSessId, const char* msg, unsigned msgByteN )
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{
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rc_t rc = kOkRC;
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unsigned msgByteCommaN = msgByteN + 1;
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// if the cache buffer has not yet been allocated
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if( p->msgCache == nullptr && p->msgCacheAllocN>0 )
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{
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p->msgCacheDataN = p->msgCacheAllocN - 3; // "]}/0" three char's must be reserved to terminate the cache message (See _cache_flush().)
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p->msgCache = mem::allocZ<char>( p->msgCacheAllocN );
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p->msgCacheSessId = kInvalidId;
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p->msgCacheN = snprintf(p->msgCache,p->msgCacheDataN,"{\"op\":\"cache\", \"array\": [");
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p->msgCacheMsgN = 0;
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}
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if( wsSessId != p->msgCacheSessId || p->msgCacheN + msgByteCommaN > p->msgCacheDataN || msgByteN > p->msgCacheDataN )
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rc = _cache_flush(p);
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if( msgByteN > p->msgCacheDataN )
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rc = p->sendCbFunc( p->sendCbArg, wsSessId, msg, msgByteN );
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else
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{
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assert( p->msgCacheN + msgByteCommaN <= p->msgCacheDataN );
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// if this isn't the first msg is the buffer then prepend a ','
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if( p->msgCacheMsgN != 0 )
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strncat(p->msgCache,",",2);
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else
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msgByteCommaN -= 1; // otherwise the msgByteCommaN is the same as msgByteN
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strncat(p->msgCache,msg,msgByteN);
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p->msgCacheN += msgByteCommaN;
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p->msgCacheSessId = wsSessId;
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p->msgCacheMsgN += 1;
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}
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return rc;
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}
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rc_t _send_or_cache( ui_t* p, unsigned sessId, const char* msg, unsigned msgByteCnt )
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{
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rc_t rc = kOkRC;
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if( p->msgCacheEnableFl )
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rc = _cache_send( p, sessId, msg, msgByteCnt );
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else
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rc = p->sendCbFunc( p->sendCbArg, sessId, msg, msgByteCnt );
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return rc;
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}
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rc_t _websockSend( ui_t* p, unsigned wsSessId, const char* msg )
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{
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rc_t rc = kOkRC;
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if( p->sendCbFunc != nullptr )
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{
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unsigned msgByteN = msg==nullptr ? 0 : strlen(msg);
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if( wsSessId != kInvalidId )
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rc = _send_or_cache( p, wsSessId, msg, msgByteN );
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else
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{
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for(unsigned i=0; i<p->sessN; ++i)
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rc = _send_or_cache( p, p->sessA[i], msg, msgByteN );
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}
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}
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return rc;
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}
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// terminating condition for format_attributes()
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void _create_attributes( ele_t* e )
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@ -1191,6 +1272,7 @@ cw::rc_t cw::ui::create(
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p->recvBufIdx = 0;
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p->recvShiftN = 0;
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p->uiRsrc = uiRsrc->duplicate();
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p->msgCacheSessId = kInvalidId;
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// create the root element
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if((ele = _createBaseEle(p, nullptr, kRootAppId, kInvalidId, "uiDivId" )) == nullptr || ele->uuId != kRootUuId )
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@ -1243,6 +1325,24 @@ cw::rc_t cw::ui::destroy( handle_t& h )
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return rc;
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}
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cw::rc_t cw::ui::enableCache( handle_t h, unsigned cacheByteCnt )
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{
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ui_t* p = _handleToPtr(h);
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p->msgCacheEnableFl = true;
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p->msgCacheAllocN = cacheByteCnt;
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return kOkRC;
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}
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cw::rc_t cw::ui::flushCache( handle_t h )
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{
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rc_t rc = kOkRC;
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ui_t* p = _handleToPtr(h);
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if( p->msgCacheEnableFl && p->msgCache != nullptr )
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rc =_cache_flush(p);
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return rc;
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}
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unsigned cw::ui::sessionIdCount(handle_t h)
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{
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@ -1657,7 +1757,6 @@ cw::rc_t cw::ui::createLog( handle_t h, unsigned& uuIdRef, unsigned parentUuId
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cw::rc_t cw::ui::createList( handle_t h, unsigned& uuIdRef, unsigned parentUuId, const char* eleName, unsigned appId, unsigned chanId, const char* clas, const char* title )
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{ return _createOneEle( _handleToPtr(h), uuIdRef, "list", kInvalidId, parentUuId, eleName, appId, chanId, clas, title); }
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cw::rc_t cw::ui::setNumbRange( handle_t h, unsigned uuId, double minValue, double maxValue, double stepValue, unsigned decPl, double value )
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{
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rc_t rc = kOkRC;
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3
cwUi.h
3
cwUi.h
@ -32,6 +32,9 @@ namespace cw
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rc_t destroy( handle_t& h );
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rc_t enableCache( handle_t h, unsigned cacheByteCnt=4096 );
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rc_t flushCache( handle_t h );
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unsigned sessionIdCount(handle_t h); // Count of connected remote UI's
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const unsigned* sessionIdArray(handle_t h); // Array of 'sessionIdCount()' remote UI id's
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