1 files changed, 80 insertions, 0 deletions
diff --git a/src/systemc/ext/tlm_core/1/req_rsp/channels/fifo/fifo_resize.hh b/src/systemc/ext/tlm_core/1/req_rsp/channels/fifo/fifo_resize.hh
new file mode 100644
index 000000000..31175ac41
--- /dev/null
+++ b/src/systemc/ext/tlm_core/1/req_rsp/channels/fifo/fifo_resize.hh
@@ -0,0 +1,80 @@
+/*****************************************************************************
+
+  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_RESIZE_HH__
+#define __TLM_CORE_1_REQ_RSP_CHANNELS_FIFO_FIFO_RESIZE_HH__
+
+// Resize interface.
+namespace tlm
+{
+
+template <typename T>
+inline void
+tlm_fifo<T>::nb_expand(unsigned int n)
+{
+    if (m_size >= 0) {
+        m_expand = true;
+        m_size += n;
+        request_update();
+    }
+}
+
+template <typename T>
+inline void
+tlm_fifo<T>::nb_unbound(unsigned int n)
+{
+    m_expand = true;
+    m_size = -n;
+
+    if (buffer.size() < static_cast<int>(n)) {
+        buffer.resize(n);
+    }
+
+    request_update();
+}
+
+template <typename T>
+inline bool
+tlm_fifo<T>::nb_reduce(unsigned int n)
+{
+    if (m_size < 0) {
+        return false;
+    }
+
+    return nb_bound(size() - n);
+}
+
+template <typename T>
+inline bool
+tlm_fifo<T>::nb_bound(unsigned int new_size)
+{
+    bool ret = true;
+
+    if (static_cast<int>(new_size) < used()) {
+        new_size = used();
+        ret = false;
+    }
+
+    m_size = new_size;
+    return ret;
+}
+
+} // namespace tlm
+
+#endif /* __TLM_CORE_1_REQ_RSP_CHANNELS_FIFO_FIFO_RESIZE_HH__ */