Add Utility/ModuleCache class and integrate it with PlatformGDBRemoteServer - in order to allow modules caching from remote targets.

http://reviews.llvm.org/D8037

llvm-svn: 231734

1 files changed, 45 insertions, 17 deletions

diff --git a/lldb/source/Host/common/HostInfoBase.cpp b/lldb/source/Host/common/HostInfoBase.cpp
index c322b5b4012..08945118d3c 100644
--- a/lldb/source/Host/common/HostInfoBase.cpp
+++ b/lldb/source/Host/common/HostInfoBase.cpp
@@ -68,7 +68,8 @@ namespace
         FileSpec m_lldb_clang_resource_dir;
         FileSpec m_lldb_system_plugin_dir;
         FileSpec m_lldb_user_plugin_dir;
-        FileSpec m_lldb_tmp_dir;
+        FileSpec m_lldb_process_tmp_dir;
+        FileSpec m_lldb_global_tmp_dir;
     };
     
     HostInfoBaseFields *g_fields = nullptr;
@@ -263,13 +264,27 @@ HostInfoBase::GetLLDBPath(lldb::PathType type, FileSpec &file_spec)
                 static std::once_flag g_once_flag;
                 static bool success = false;
                 std::call_once(g_once_flag,  []() {
-                    success = HostInfo::ComputeTempFileDirectory (g_fields->m_lldb_tmp_dir);
+                    success = HostInfo::ComputeProcessTempFileDirectory (g_fields->m_lldb_process_tmp_dir);
                     Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST);
                     if (log)
-                        log->Printf("HostInfoBase::GetLLDBPath(ePathTypeLLDBTempSystemDir) => '%s'", g_fields->m_lldb_tmp_dir.GetPath().c_str());
+                        log->Printf("HostInfoBase::GetLLDBPath(ePathTypeLLDBTempSystemDir) => '%s'", g_fields->m_lldb_process_tmp_dir.GetPath().c_str());
                 });
                 if (success)
-                    result = &g_fields->m_lldb_tmp_dir;
+                    result = &g_fields->m_lldb_process_tmp_dir;
+            }
+            break;
+        case lldb::ePathTypeGlobalLLDBTempSystemDir:
+            {
+                static std::once_flag g_once_flag;
+                static bool success = false;
+                std::call_once(g_once_flag,  []() {
+                    success = HostInfo::ComputeGlobalTempFileDirectory (g_fields->m_lldb_global_tmp_dir);
+                    Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST);
+                    if (log)
+                        log->Printf("HostInfoBase::GetLLDBPath(ePathTypeGlobalLLDBTempSystemDir) => '%s'", g_fields->m_lldb_global_tmp_dir.GetPath().c_str());
+                });
+                if (success)
+                    result = &g_fields->m_lldb_global_tmp_dir;
             }
             break;
     }
@@ -305,8 +320,32 @@ HostInfoBase::ComputeSupportExeDirectory(FileSpec &file_spec)
 }
 
 bool
-HostInfoBase::ComputeTempFileDirectory(FileSpec &file_spec)
+HostInfoBase::ComputeProcessTempFileDirectory(FileSpec &file_spec)
 {
+    FileSpec temp_file_spec;
+    if (!ComputeGlobalTempFileDirectory(temp_file_spec))
+        return false;
+
+    std::string pid_str;
+    llvm::raw_string_ostream pid_stream(pid_str);
+    pid_stream << Host::GetCurrentProcessID();
+    temp_file_spec.AppendPathComponent(pid_stream.str().c_str());
+    std::string final_path = temp_file_spec.GetPath();
+    if (!FileSystem::MakeDirectory(final_path.c_str(), eFilePermissionsDirectoryDefault).Success())
+        return false;
+
+    // Make an atexit handler to clean up the process specify LLDB temp dir
+    // and all of its contents.
+    ::atexit(CleanupProcessSpecificLLDBTempDir);
+    file_spec.GetDirectory().SetCStringWithLength(final_path.c_str(), final_path.size());
+    return true;
+}
+
+bool
+HostInfoBase::ComputeGlobalTempFileDirectory(FileSpec &file_spec)
+{
+    file_spec.Clear();
+
     const char *tmpdir_cstr = getenv("TMPDIR");
     if (tmpdir_cstr == NULL)
     {
@@ -322,18 +361,7 @@ HostInfoBase::ComputeTempFileDirectory(FileSpec &file_spec)
     if (!FileSystem::MakeDirectory(temp_file_spec.GetPath().c_str(), eFilePermissionsDirectoryDefault).Success())
         return false;
 
-    std::string pid_str;
-    llvm::raw_string_ostream pid_stream(pid_str);
-    pid_stream << Host::GetCurrentProcessID();
-    temp_file_spec.AppendPathComponent(pid_stream.str().c_str());
-    std::string final_path = temp_file_spec.GetPath();
-    if (!FileSystem::MakeDirectory(final_path.c_str(), eFilePermissionsDirectoryDefault).Success())
-        return false;
-
-    // Make an atexit handler to clean up the process specify LLDB temp dir
-    // and all of its contents.
-    ::atexit(CleanupProcessSpecificLLDBTempDir);
-    file_spec.GetDirectory().SetCStringWithLength(final_path.c_str(), final_path.size());
+    file_spec = temp_file_spec;
     return true;
 }