[lldb] Apply gdb-remote timeout to platform connections as well

We have a plugin.process.gdb-remote.packet-timeout setting, which can be
used to control how long the lldb client is willing to wait before
declaring the server side dead. Our test suite makes use of this
feature, and sets the setting value fairly high, as the low default
value can cause flaky tests, particularly on slower bots.

After fixing TestPlatformConnect (one of the few tests exercising the
remote platform capabilities of lldb) in 4b284b9ca, it immediately
started being flaky on the arm bots. It turns out this is because the
packet-timeout setting is not being applied to platform connections.

This patch makes the platform connections also respect the value of this
setting. It also adds a test which checks that the timeout value is
being honored.

Differential Revision: https://reviews.llvm.org/D97769

1 files changed, 4 insertions, 0 deletions

diff --git a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
index a2e41e7..4a8eb07 100644
--- a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
@@ -213,6 +213,10 @@ ProcessGDBRemote::CreateInstance(lldb::TargetSP target_sp,
   return process_sp;
 }
 
+std::chrono::seconds ProcessGDBRemote::GetPacketTimeout() {
+  return std::chrono::seconds(GetGlobalPluginProperties()->GetPacketTimeout());
+}
+
 bool ProcessGDBRemote::CanDebug(lldb::TargetSP target_sp,
                                 bool plugin_specified_by_name) {
   if (plugin_specified_by_name)