[cfe-commits] r159256 - in /cfe/trunk: include/clang/Basic/FileManager.h lib/Basic/FileManager.cpp

[Axel Naumann]

Author: axel
Date: Wed Jun 27 04:17:42 2012
New Revision: 159256

URL: http://llvm.org/viewvc/llvm-project?rev=159256&view=rev
Log:
>From Vassil Vassilev:
add interface for removing a FileEntry from the cache.
Forces a re-read the contents from disk, e.g. because a tool (like cling) wants to pick up a modified file.

Modified:
    cfe/trunk/include/clang/Basic/FileManager.h
    cfe/trunk/lib/Basic/FileManager.cpp

Modified: cfe/trunk/include/clang/Basic/FileManager.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/FileManager.h?rev=159256&r1=159255&r2=159256&view=diff
==============================================================================
--- cfe/trunk/include/clang/Basic/FileManager.h (original)
+++ cfe/trunk/include/clang/Basic/FileManager.h Wed Jun 27 04:17:42 2012
@@ -222,6 +222,9 @@
   /// FileManager's FileSystemOptions.
   bool getNoncachedStatValue(StringRef Path, struct stat &StatBuf);
 
+  /// \brief Remove the real file Entry from the cache.
+  void InvalidateCache(const FileEntry* Entry);
+
   /// \brief If path is not absolute and FileSystemOptions set the working
   /// directory, the path is modified to be relative to the given
   /// working directory.

Modified: cfe/trunk/lib/Basic/FileManager.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/FileManager.cpp?rev=159256&r1=159255&r2=159256&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/FileManager.cpp (original)
+++ cfe/trunk/lib/Basic/FileManager.cpp Wed Jun 27 04:17:42 2012
@@ -111,6 +111,8 @@
   }
 
   size_t size() const { return UniqueFiles.size(); }
+
+  friend class FileManager;
 };
 
 //===----------------------------------------------------------------------===//
@@ -152,6 +154,8 @@
   }
 
   size_t size() const { return UniqueFiles.size(); }
+
+  friend class FileManager;
 };
 
 #endif
@@ -559,6 +563,15 @@
   return ::stat(FilePath.c_str(), &StatBuf) != 0;
 }
 
+void FileManager::InvalidateCache(const FileEntry* Entry) {
+  if (!Entry)
+    return;
+
+  SeenFileEntries.erase(Entry->getName());
+  UniqueRealFiles.UniqueFiles.erase(*Entry);
+}
+
+
 void FileManager::GetUniqueIDMapping(
                    SmallVectorImpl<const FileEntry *> &UIDToFiles) const {
   UIDToFiles.clear();