diff options
Diffstat (limited to 'ext/systemc/src/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/tlm_fifo_peek.h')
-rw-r--r-- | ext/systemc/src/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/tlm_fifo_peek.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/ext/systemc/src/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/tlm_fifo_peek.h b/ext/systemc/src/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/tlm_fifo_peek.h new file mode 100644 index 000000000..e856c5657 --- /dev/null +++ b/ext/systemc/src/tlm_core/tlm_1/tlm_req_rsp/tlm_channels/tlm_fifo/tlm_fifo_peek.h @@ -0,0 +1,98 @@ +/***************************************************************************** + + Licensed to Accellera Systems Initiative Inc. (Accellera) under one or + more contributor license agreements. See the NOTICE file distributed + with this work for additional information regarding copyright ownership. + Accellera licenses this file to you under the Apache License, Version 2.0 + (the "License"); you may not use this file except in compliance with the + License. You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied. See the License for the specific language governing + permissions and limitations under the License. + + *****************************************************************************/ + +#ifndef __TLM_FIFO_PEEK_H__ +#define __TLM_FIFO_PEEK_H__ + +namespace tlm { + +template < typename T> +inline +T +tlm_fifo<T>::peek( tlm_tag<T> * ) const { + + while( is_empty() ) { + + // call free-standing sc_core::wait(), + // since sc_prim_channel::wait(.) is not const + + sc_core::wait( m_data_written_event ); + } + + return buffer.read_data(); + +} + +template < typename T> +inline +bool +tlm_fifo<T>::nb_peek( T &t ) const { + + if( used() < 1 ) { + return false; + } + + t = buffer.peek_data( 0 ); + return true; + +} + +template < typename T> +inline +bool +tlm_fifo<T>::nb_peek( T &t , int n ) const { + + if( n >= used() || n < -1 ) { + return false; + } + + if( n == -1 ) { + n = used() - 1; + } + + t = buffer.peek_data( n ); + return true; + +} + +template< typename T > +inline +bool +tlm_fifo<T>::nb_can_peek( tlm_tag<T> * ) const +{ + return !is_empty(); +} + +template < typename T> +inline +bool +tlm_fifo<T>::nb_poke( const T &t , int n ) { + + if( n >= used() || n < 0 ) { + return false; + } + + buffer.poke_data( n ) = t; + return true; + +} + +} // namespace tlm + +#endif |