Add "vAttachOrWait" to debugserver, so you can implement "attach to the process if it exists OR wait for it" without race conditions. Use that in lldb.
git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@160578 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp b/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
index 180c1f3..b4263d1 100644
--- a/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
+++ b/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
@@ -50,6 +50,7 @@
m_supports_memory_region_info (eLazyBoolCalculate),
m_supports_watchpoint_support_info (eLazyBoolCalculate),
m_watchpoints_trigger_after_instruction(eLazyBoolCalculate),
+ m_attach_or_wait_reply(eLazyBoolCalculate),
m_supports_qProcessInfoPID (true),
m_supports_qfProcessInfo (true),
m_supports_qUserName (true),
@@ -133,6 +134,26 @@
}
}
+bool
+GDBRemoteCommunicationClient::GetVAttachOrWaitSupported ()
+{
+ if (m_attach_or_wait_reply == eLazyBoolCalculate)
+ {
+ m_attach_or_wait_reply = eLazyBoolNo;
+
+ StringExtractorGDBRemote response;
+ if (SendPacketAndWaitForResponse("qVAttachOrWaitSupported", response, false))
+ {
+ if (response.IsOKResponse())
+ m_attach_or_wait_reply = eLazyBoolYes;
+ }
+ }
+ if (m_attach_or_wait_reply == eLazyBoolYes)
+ return true;
+ else
+ return false;
+}
+
void
GDBRemoteCommunicationClient::ResetDiscoverableSettings()