1 files changed, 87 insertions, 0 deletions
diff --git a/src/systemc/ext/tlm_core/1/req_rsp/channels/fifo/fifo_peek.hh b/src/systemc/ext/tlm_core/1/req_rsp/channels/fifo/fifo_peek.hh
new file mode 100644
index 000000000..843120512
--- /dev/null
+++ b/src/systemc/ext/tlm_core/1/req_rsp/channels/fifo/fifo_peek.hh
@@ -0,0 +1,87 @@
+/*****************************************************************************
+
+  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_CORE_1_REQ_RSP_CHANNELS_FIFO_FIFO_PEEK_HH__
+#define __TLM_CORE_1_REQ_RSP_CHANNELS_FIFO_FIFO_PEEK_HH__
+
+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 /* __TLM_CORE_1_REQ_RSP_CHANNELS_FIFO_FIFO_PEEK_HH__ */