Move some Host logic into HostInfo class.

This patch creates a HostInfo class, a static class used to answer
basic queries about the host platform.  As part of this change,
some functionality is moved from Host to HostInfo, and relevant
fixups are performed in the rest of the codebase.

This is part of a larger effort to isolate more code in the Host
layer into platform-specific groups, to make it easier to make
platform specific changes for a particular Host without breaking
other hosts.

Reviewed by: Greg Clayton

Differential Revision: http://reviews.llvm.org/D4963

llvm-svn: 215992

1 files changed, 16 insertions, 7 deletions

diff --git a/lldb/source/Target/Platform.cpp b/lldb/source/Target/Platform.cpp
index f5dd66a3e59..2392efd3f4f 100644
--- a/lldb/source/Target/Platform.cpp
+++ b/lldb/source/Target/Platform.cpp
@@ -21,6 +21,7 @@
 #include "lldb/Host/FileSpec.h"
 #include "lldb/Host/FileSystem.h"
 #include "lldb/Host/Host.h"
+#include "lldb/Host/HostInfo.h"
 #include "lldb/Target/Process.h"
 #include "lldb/Target/Target.h"
 #include "lldb/Utility/Utils.h"
@@ -349,9 +350,7 @@ Platform::GetOSVersion (uint32_t &major,
         if (!success)
         {
             // We have a local host platform
-            success = Host::GetOSVersion (m_major_os_version, 
-                                          m_minor_os_version, 
-                                          m_update_os_version);
+            success = HostInfo::GetOSVersion(m_major_os_version, m_minor_os_version, m_update_os_version);
             m_os_version_set_while_connected = success;
         }
     }
@@ -398,8 +397,14 @@ Platform::GetOSVersion (uint32_t &major,
 bool
 Platform::GetOSBuildString (std::string &s)
 {
+    s.clear();
+
     if (IsHost())
-        return Host::GetOSBuildString (s);
+#if !defined(__linux__)
+        return HostInfo::GetOSBuildString(s);
+#else
+        return false;
+#endif
     else
         return GetRemoteOSBuildString (s);
 }
@@ -408,7 +413,11 @@ bool
 Platform::GetOSKernelDescription (std::string &s)
 {
     if (IsHost())
-        return Host::GetOSKernelDescription (s);
+#if !defined(__linux__)
+        return HostInfo::GetOSKernelDescription(s);
+#else
+        return false;
+#endif
     else
         return GetRemoteOSKernelDescription (s);
 }
@@ -801,8 +810,8 @@ Platform::SetOSVersion (uint32_t major,
 {
     if (IsHost())
     {
-        // We don't need anyone setting the OS version for the host platform, 
-        // we should be able to figure it out by calling Host::GetOSVersion(...).
+        // We don't need anyone setting the OS version for the host platform,
+        // we should be able to figure it out by calling HostInfo::GetOSVersion(...).
         return false; 
     }
     else