| /***************************************************************************** |
| |
| 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 |