Implement a framework for live debugging on Windows.

When processes are launched for debugging on Windows now, LLDB
will detect changes such as DLL loads and unloads, breakpoints,
thread creation and deletion, etc.

These notifications are not yet propagated to LLDB in a way that
LLDB understands what is happening with the process.  This only
picks up the notifications from the OS in a way that they can be
sent to LLDB with subsequent patches.

Reviewed by: Scott Graham

Differential Revision: http://reviews.llvm.org/D6037

llvm-svn: 221207

1 files changed, 32 insertions, 2 deletions

diff --git a/lldb/source/Plugins/Process/Windows/ProcessWindows.cpp b/lldb/source/Plugins/Process/Windows/ProcessWindows.cpp
index 50ee9f60217..e71c25f83a5 100644
--- a/lldb/source/Plugins/Process/Windows/ProcessWindows.cpp
+++ b/lldb/source/Plugins/Process/Windows/ProcessWindows.cpp
@@ -11,18 +11,24 @@
 #include "lldb/Host/windows/windows.h"
 
 // C++ Includes
+#include <vector>
+
 // Other libraries and framework includes
 #include "lldb/Core/Module.h"
 #include "lldb/Core/PluginManager.h"
 #include "lldb/Core/State.h"
 #include "lldb/Host/Host.h"
 #include "lldb/Host/HostProcess.h"
+#include "lldb/Host/MonitoringProcessLauncher.h"
+#include "lldb/Host/ThreadLauncher.h"
 #include "lldb/Host/windows/ProcessLauncherWindows.h"
 #include "lldb/Symbol/ObjectFile.h"
 #include "lldb/Target/DynamicLoader.h"
 #include "lldb/Target/FileAction.h"
 #include "lldb/Target/Target.h"
 
+#include "DebugDriverThread.h"
+#include "DebugProcessLauncher.h"
 #include "ProcessWindows.h"
 
 using namespace lldb;
@@ -48,6 +54,7 @@ ProcessWindows::Initialize()
         PluginManager::RegisterPlugin(GetPluginNameStatic(),
                                       GetPluginDescriptionStatic(),
                                       CreateInstance);
+        DebugDriverThread::Initialize();
     }
 }
 
@@ -59,9 +66,14 @@ ProcessWindows::ProcessWindows(Target& target, Listener &listener)
 {
 }
 
+ProcessWindows::~ProcessWindows()
+{
+}
+
 void
 ProcessWindows::Terminate()
 {
+    DebugDriverThread::Teardown();
 }
 
 lldb_private::ConstString
@@ -89,7 +101,26 @@ Error
 ProcessWindows::DoLaunch(Module *exe_module,
                          ProcessLaunchInfo &launch_info)
 {
-    return Host::LaunchProcess(launch_info);
+    Error result;
+    HostProcess process;
+    SetPrivateState(eStateLaunching);
+    if (launch_info.GetFlags().Test(eLaunchFlagDebug))
+    {
+        // If we're trying to debug this process, we need to use a
+        // DebugProcessLauncher so that we can enter a WaitForDebugEvent loop
+        // on the same thread that does the CreateProcess.
+        DebugProcessLauncher launcher(shared_from_this());
+        process = launcher.LaunchProcess(launch_info, result);
+    }
+    else
+        return Host::LaunchProcess(launch_info);
+
+    if (!result.Success())
+        return result;
+
+    launch_info.SetProcessID(process.GetProcessId());
+    SetID(process.GetProcessId());
+    return result;
 }
 
 Error
@@ -181,4 +212,3 @@ ProcessWindows::CanDebug(Target &target, bool plugin_specified_by_name)
         return exe_module_sp->GetFileSpec().Exists();
     return false;
 }
-