From 52fa2b6f072bb5ecabac0595c78b97f50f30d507 Mon Sep 17 00:00:00 2001
From: Tiago Muck <tiago.muck@arm.com>
Date: Wed, 5 Jun 2019 15:34:13 -0500
Subject: [PATCH] mem-ruby: MessageBuffer capacity check
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Trip assert if call enqueue on a full message buffer.

Change-Id: I842183d8bf2c681787f1b6ac23c95825095ad05d
Signed-off-by: Tiago Mück <tiago.muck@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/31254
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Matthew Poremba <matthew.poremba@amd.com>
---
 src/mem/ruby/network/MessageBuffer.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/mem/ruby/network/MessageBuffer.cc b/src/mem/ruby/network/MessageBuffer.cc
index 3db8515a3..fb1d734dc 100644
--- a/src/mem/ruby/network/MessageBuffer.cc
+++ b/src/mem/ruby/network/MessageBuffer.cc
@@ -225,6 +225,9 @@ MessageBuffer::enqueue(MsgPtr message, Tick current_time, Tick delta)
     // Increment the number of messages statistic
     m_buf_msgs++;
 
+    assert((m_max_size == 0) ||
+           ((m_prio_heap.size() + m_stall_map_size) <= m_max_size));
+
     DPRINTF(RubyQueue, "Enqueue arrival_time: %lld, Message: %s\n",
             arrival_time, *(message.get()));
 
-- 
2.30.2