misc: Using smart pointers for memory Requests

This patch is changing the underlying type for RequestPtr from Request*
to shared_ptr<Request>. Having memory requests being managed by smart
pointers will simplify the code; it will also prevent memory leakage and
dangling pointers.

Change-Id: I7749af38a11ac8eb4d53d8df1252951e0890fde3
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/10996
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/src/cpu/kvm/x86_cpu.cc b/src/cpu/kvm/x86_cpu.cc
index 1a23b6717..012cccd20 100644
--- a/src/cpu/kvm/x86_cpu.cc
+++ b/src/cpu/kvm/x86_cpu.cc
@@ -1354,8 +1354,10 @@ X86KvmCPU::handleKvmExitIO()
     // prevent races in multi-core mode.
     EventQueue::ScopedMigration migrate(deviceEventQueue());
     for (int i = 0; i < count; ++i) {
-        RequestPtr io_req = new Request(pAddr, kvm_run.io.size,
-                                        Request::UNCACHEABLE, dataMasterId());
+        RequestPtr io_req = std::make_shared<Request>(
+            pAddr, kvm_run.io.size,
+            Request::UNCACHEABLE, dataMasterId());
+
         io_req->setContext(tc->contextId());
 
         PacketPtr pkt = new Packet(io_req, cmd);