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Avoid storing a directory name in both the DirEntries map keys and in the 

UniqueDirs value.  Instead, just have the UniqueDirs value contain a pointer
to the key in the DirEntries map.

llvm-svn: 39083
This commit is contained in:
Chris Lattner 2006-10-30 03:11:40 +00:00
parent af65375944
commit a85cbe28a0
2 changed files with 7 additions and 6 deletions
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7
clang/Basic/FileManager.cpp
View File

@ -59,11 +59,12 @@ const DirectoryEntry *FileManager::getDirectory(const std::string &Filename) {
DirectoryEntry &UDE = DirectoryEntry &UDE =
UniqueDirs[std::make_pair(StatBuf.st_dev, StatBuf.st_ino)]; UniqueDirs[std::make_pair(StatBuf.st_dev, StatBuf.st_ino)];
if (UDE.getName()[0]) // Already have an entry with this inode, return it. if (UDE.getName()) // Already have an entry with this inode, return it.
return NamedDirEnt = &UDE; return NamedDirEnt = &UDE;
// Otherwise, we don't have this directory yet, add it. // Otherwise, we don't have this directory yet, add it. We use the string
UDE.Name = Filename; // key from the DirEntries map as the string.
UDE.Name = DirEntries.GetKeyForValueInMap(NamedDirEnt);
return NamedDirEnt = &UDE; return NamedDirEnt = &UDE;
} }

6
clang/include/clang/Basic/FileManager.h
View File

@ -27,11 +27,11 @@ class FileManager;
/// DirectoryEntry - Cached information about one directory on the disk. /// DirectoryEntry - Cached information about one directory on the disk.
/// ///
class DirectoryEntry { class DirectoryEntry {
std::string Name; // Name of the directory. const char *Name; // Name of the directory.
friend class FileManager; friend class FileManager;
public: public:
DirectoryEntry() {} DirectoryEntry() : Name(0) {}
const char *getName() const { return Name.c_str(); } const char *getName() const { return Name; }
}; };
/// FileEntry - Cached information about one file on the disk. /// FileEntry - Cached information about one file on the disk.