diff options
author | Giacomo Travaglini <giacomo.travaglini@arm.com> | 2018-06-04 09:40:19 +0100 |
---|---|---|
committer | Giacomo Travaglini <giacomo.travaglini@arm.com> | 2018-06-11 16:55:30 +0000 |
commit | f54020eb8155371725ab75b0fc5c419287eca084 (patch) | |
tree | 65d379f7603e689e083e9a58ff4c2e90abd19fbf /src/arch/x86/pagetable_walker.cc | |
parent | 2113b21996d086dab32b9fd388efe3df241bfbd2 (diff) | |
download | gem5-f54020eb8155371725ab75b0fc5c419287eca084.tar.xz |
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>
Diffstat (limited to 'src/arch/x86/pagetable_walker.cc')
-rw-r--r-- | src/arch/x86/pagetable_walker.cc | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/src/arch/x86/pagetable_walker.cc b/src/arch/x86/pagetable_walker.cc index 998ea856a..11ec12245 100644 --- a/src/arch/x86/pagetable_walker.cc +++ b/src/arch/x86/pagetable_walker.cc @@ -68,7 +68,7 @@ namespace X86ISA { Fault Walker::start(ThreadContext * _tc, BaseTLB::Translation *_translation, - RequestPtr _req, BaseTLB::Mode _mode) + const RequestPtr &_req, BaseTLB::Mode _mode) { // TODO: in timing mode, instead of blocking when there are other // outstanding requests, see if this request can be coalesced with @@ -514,8 +514,8 @@ Walker::WalkerState::stepWalk(PacketPtr &write) //If we didn't return, we're setting up another read. Request::Flags flags = oldRead->req->getFlags(); flags.set(Request::UNCACHEABLE, uncacheable); - RequestPtr request = - new Request(nextRead, oldRead->getSize(), flags, walker->masterId); + RequestPtr request = std::make_shared<Request>( + nextRead, oldRead->getSize(), flags, walker->masterId); read = new Packet(request, MemCmd::ReadReq); read->allocate(); // If we need to write, adjust the read packet to write the modified @@ -526,7 +526,6 @@ Walker::WalkerState::stepWalk(PacketPtr &write) write->cmd = MemCmd::WriteReq; } else { write = NULL; - delete oldRead->req; delete oldRead; } } @@ -537,7 +536,6 @@ void Walker::WalkerState::endWalk() { nextState = Ready; - delete read->req; delete read; read = NULL; } @@ -584,8 +582,10 @@ Walker::WalkerState::setupWalk(Addr vaddr) Request::Flags flags = Request::PHYSICAL; if (cr3.pcd) flags.set(Request::UNCACHEABLE); - RequestPtr request = new Request(topAddr, dataSize, flags, - walker->masterId); + + RequestPtr request = std::make_shared<Request>( + topAddr, dataSize, flags, walker->masterId); + read = new Packet(request, MemCmd::ReadReq); read->allocate(); } |