Consolidate UnixSignals setting/getting in Process.

See http://reviews.llvm.org/D5108 for details.

This change does the following:

* eliminates the Process::GetUnixSignals() virtual method and replaces with a fixed getter.
* replaces the Process UnixSignals storage with a shared pointer.
* adds a Process constructor variant that can be passed the UnixSignalsSP. When the constructor without the UnixSignalsSP is specified, the Host's default UnixSignals is used.
* adds a host-specific version of GetUnixSignals() that is used when we need the host's appropriate UnixSignals variant.
* replaces GetUnixSignals() overrides in PlatformElfCore, ProcessGDBRemote, ProcessFreeBSD and ProcessLinux with code that appropriately sets the Process::UnixSignals for the process.

This change also enables some future patches that will enable llgs to be used for local Linux debugging.

llvm-svn: 216748

1 files changed, 12 insertions, 2 deletions

diff --git a/lldb/source/Plugins/Process/FreeBSD/ProcessFreeBSD.cpp b/lldb/source/Plugins/Process/FreeBSD/ProcessFreeBSD.cpp
index 9fb022dc916..4b488444de1 100644
--- a/lldb/source/Plugins/Process/FreeBSD/ProcessFreeBSD.cpp
+++ b/lldb/source/Plugins/Process/FreeBSD/ProcessFreeBSD.cpp
@@ -22,12 +22,23 @@
 #include "ProcessFreeBSD.h"
 #include "ProcessPOSIXLog.h"
 #include "Plugins/Process/Utility/InferiorCallPOSIX.h"
+#include "Plugins/Process/Utility/FreeBSDSignals.h"
 #include "ProcessMonitor.h"
 #include "FreeBSDThread.h"
 
 using namespace lldb;
 using namespace lldb_private;
 
+namespace
+{
+    UnixSignalsSP&
+    GetFreeBSDSignals ()
+    {
+        static UnixSignalsSP s_freebsd_signals_sp (new FreeBSDSignals ());
+        return s_freebsd_signals_sp;
+    }
+}
+
 //------------------------------------------------------------------------------
 // Static functions.
 
@@ -113,7 +124,7 @@ ProcessFreeBSD::EnablePluginLogging(Stream *strm, Args &command)
 // Constructors and destructors.
 
 ProcessFreeBSD::ProcessFreeBSD(Target& target, Listener &listener)
-    : ProcessPOSIX(target, listener),
+    : ProcessPOSIX(target, listener, GetFreeBSDSignals ()),
       m_resume_signo(0)
 {
 }
@@ -271,4 +282,3 @@ ProcessFreeBSD::SendMessage(const ProcessMessage &message)
 
     m_message_queue.push(message);
 }
-