summaryrefslogtreecommitdiffstats
path: root/clang/lib/Basic
diff options
context:
space:
mode:
Diffstat (limited to 'clang/lib/Basic')
-rw-r--r--clang/lib/Basic/FileManager.cpp131
-rw-r--r--clang/lib/Basic/FileSystemStatCache.cpp48
2 files changed, 59 insertions, 120 deletions
diff --git a/clang/lib/Basic/FileManager.cpp b/clang/lib/Basic/FileManager.cpp
index 079b7fffb60..af9b2663cbf 100644
--- a/clang/lib/Basic/FileManager.cpp
+++ b/clang/lib/Basic/FileManager.cpp
@@ -63,91 +63,16 @@ FileEntry::~FileEntry() {
if (FD != -1) ::close(FD);
}
-bool FileEntry::isNamedPipe() const {
- return S_ISFIFO(FileMode);
-}
-
-//===----------------------------------------------------------------------===//
-// Windows.
-//===----------------------------------------------------------------------===//
-
-#ifdef LLVM_ON_WIN32
-
-namespace {
- static std::string GetFullPath(const char *relPath) {
- char *absPathStrPtr = _fullpath(NULL, relPath, 0);
- assert(absPathStrPtr && "_fullpath() returned NULL!");
-
- std::string absPath(absPathStrPtr);
-
- free(absPathStrPtr);
- return absPath;
- }
-}
-
-class FileManager::UniqueDirContainer {
- /// UniqueDirs - Cache from full path to existing directories/files.
- ///
- llvm::StringMap<DirectoryEntry> UniqueDirs;
-
-public:
- /// getDirectory - Return an existing DirectoryEntry with the given
- /// name if there is already one; otherwise create and return a
- /// default-constructed DirectoryEntry.
- DirectoryEntry &getDirectory(const char *Name,
- const struct stat & /*StatBuf*/) {
- std::string FullPath(GetFullPath(Name));
- return UniqueDirs.GetOrCreateValue(FullPath).getValue();
- }
-
- size_t size() const { return UniqueDirs.size(); }
-};
-
-class FileManager::UniqueFileContainer {
- /// UniqueFiles - Cache from full path to existing directories/files.
- ///
- llvm::StringMap<FileEntry, llvm::BumpPtrAllocator> UniqueFiles;
-
-public:
- /// getFile - Return an existing FileEntry with the given name if
- /// there is already one; otherwise create and return a
- /// default-constructed FileEntry.
- FileEntry &getFile(const char *Name, const struct stat & /*StatBuf*/) {
- std::string FullPath(GetFullPath(Name));
-
- // Lowercase string because Windows filesystem is case insensitive.
- FullPath = StringRef(FullPath).lower();
- return UniqueFiles.GetOrCreateValue(FullPath).getValue();
- }
-
- size_t size() const { return UniqueFiles.size(); }
-
- void erase(const FileEntry *Entry) {
- std::string FullPath(GetFullPath(Entry->getName()));
-
- // Lowercase string because Windows filesystem is case insensitive.
- FullPath = StringRef(FullPath).lower();
- UniqueFiles.erase(FullPath);
- }
-};
-
-//===----------------------------------------------------------------------===//
-// Unix-like Systems.
-//===----------------------------------------------------------------------===//
-
-#else
-
class FileManager::UniqueDirContainer {
/// UniqueDirs - Cache from ID's to existing directories/files.
- std::map<std::pair<dev_t, ino_t>, DirectoryEntry> UniqueDirs;
+ std::map<llvm::sys::fs::UniqueID, DirectoryEntry> UniqueDirs;
public:
/// getDirectory - Return an existing DirectoryEntry with the given
/// ID's if there is already one; otherwise create and return a
/// default-constructed DirectoryEntry.
- DirectoryEntry &getDirectory(const char * /*Name*/,
- const struct stat &StatBuf) {
- return UniqueDirs[std::make_pair(StatBuf.st_dev, StatBuf.st_ino)];
+ DirectoryEntry &getDirectory(const llvm::sys::fs::UniqueID &UniqueID) {
+ return UniqueDirs[UniqueID];
}
size_t size() const { return UniqueDirs.size(); }
@@ -161,12 +86,10 @@ public:
/// getFile - Return an existing FileEntry with the given ID's if
/// there is already one; otherwise create and return a
/// default-constructed FileEntry.
- FileEntry &getFile(const char * /*Name*/, const struct stat &StatBuf) {
- return
- const_cast<FileEntry&>(
- *UniqueFiles.insert(FileEntry(StatBuf.st_dev,
- StatBuf.st_ino,
- StatBuf.st_mode)).first);
+ FileEntry &getFile(llvm::sys::fs::UniqueID UniqueID, bool IsNamedPipe,
+ bool InPCH) {
+ return const_cast<FileEntry &>(
+ *UniqueFiles.insert(FileEntry(UniqueID, IsNamedPipe, InPCH)).first);
}
size_t size() const { return UniqueFiles.size(); }
@@ -174,8 +97,6 @@ public:
void erase(const FileEntry *Entry) { UniqueFiles.erase(*Entry); }
};
-#endif
-
//===----------------------------------------------------------------------===//
// Common logic.
//===----------------------------------------------------------------------===//
@@ -323,8 +244,8 @@ const DirectoryEntry *FileManager::getDirectory(StringRef DirName,
const char *InterndDirName = NamedDirEnt.getKeyData();
// Check to see if the directory exists.
- struct stat StatBuf;
- if (getStatValue(InterndDirName, StatBuf, false, 0/*directory lookup*/)) {
+ FileData Data;
+ if (getStatValue(InterndDirName, Data, false, 0 /*directory lookup*/)) {
// There's no real directory at the given path.
if (!CacheFailure)
SeenDirEntries.erase(DirName);
@@ -335,7 +256,8 @@ const DirectoryEntry *FileManager::getDirectory(StringRef DirName,
// same inode (this occurs on Unix-like systems when one dir is
// symlinked to another, for example) or the same path (on
// Windows).
- DirectoryEntry &UDE = UniqueRealDirs.getDirectory(InterndDirName, StatBuf);
+ DirectoryEntry &UDE =
+ UniqueRealDirs.getDirectory(Data.UniqueID);
NamedDirEnt.setValue(&UDE);
if (!UDE.getName()) {
@@ -388,8 +310,8 @@ const FileEntry *FileManager::getFile(StringRef Filename, bool openFile,
// Nope, there isn't. Check to see if the file exists.
int FileDescriptor = -1;
- struct stat StatBuf;
- if (getStatValue(InterndFileName, StatBuf, true,
+ FileData Data;
+ if (getStatValue(InterndFileName, Data, true,
openFile ? &FileDescriptor : 0)) {
// There's no real file at the given path.
if (!CacheFailure)
@@ -405,7 +327,8 @@ const FileEntry *FileManager::getFile(StringRef Filename, bool openFile,
// It exists. See if we have already opened a file with the same inode.
// This occurs when one dir is symlinked to another, for example.
- FileEntry &UFE = UniqueRealFiles.getFile(InterndFileName, StatBuf);
+ FileEntry &UFE =
+ UniqueRealFiles.getFile(Data.UniqueID, Data.IsNamedPipe, Data.InPCH);
NamedFileEnt.setValue(&UFE);
if (UFE.getName()) { // Already have an entry with this inode, return it.
@@ -420,8 +343,8 @@ const FileEntry *FileManager::getFile(StringRef Filename, bool openFile,
// FIXME: Change the name to be a char* that points back to the
// 'SeenFileEntries' key.
UFE.Name = InterndFileName;
- UFE.Size = StatBuf.st_size;
- UFE.ModTime = StatBuf.st_mtime;
+ UFE.Size = Data.Size;
+ UFE.ModTime = Data.ModTime;
UFE.Dir = DirInfo;
UFE.UID = NextFileUID++;
UFE.FD = FileDescriptor;
@@ -458,12 +381,12 @@ FileManager::getVirtualFile(StringRef Filename, off_t Size,
"The directory of a virtual file should already be in the cache.");
// Check to see if the file exists. If so, drop the virtual file
- struct stat StatBuf;
+ FileData Data;
const char *InterndFileName = NamedFileEnt.getKeyData();
- if (getStatValue(InterndFileName, StatBuf, true, 0) == 0) {
- StatBuf.st_size = Size;
- StatBuf.st_mtime = ModificationTime;
- UFE = &UniqueRealFiles.getFile(InterndFileName, StatBuf);
+ if (getStatValue(InterndFileName, Data, true, 0) == 0) {
+ Data.Size = Size;
+ Data.ModTime = ModificationTime;
+ UFE = &UniqueRealFiles.getFile(Data.UniqueID, Data.IsNamedPipe, Data.InPCH);
NamedFileEnt.setValue(UFE);
@@ -572,19 +495,19 @@ getBufferForFile(StringRef Filename, std::string *ErrorStr) {
/// if the path points to a virtual file or does not exist, or returns
/// false if it's an existent real file. If FileDescriptor is NULL,
/// do directory look-up instead of file look-up.
-bool FileManager::getStatValue(const char *Path, struct stat &StatBuf,
- bool isFile, int *FileDescriptor) {
+bool FileManager::getStatValue(const char *Path, FileData &Data, bool isFile,
+ int *FileDescriptor) {
// FIXME: FileSystemOpts shouldn't be passed in here, all paths should be
// absolute!
if (FileSystemOpts.WorkingDir.empty())
- return FileSystemStatCache::get(Path, StatBuf, isFile, FileDescriptor,
+ return FileSystemStatCache::get(Path, Data, isFile, FileDescriptor,
StatCache.get());
SmallString<128> FilePath(Path);
FixupRelativePath(FilePath);
- return FileSystemStatCache::get(FilePath.c_str(), StatBuf,
- isFile, FileDescriptor, StatCache.get());
+ return FileSystemStatCache::get(FilePath.c_str(), Data, isFile,
+ FileDescriptor, StatCache.get());
}
bool FileManager::getNoncachedStatValue(StringRef Path,
diff --git a/clang/lib/Basic/FileSystemStatCache.cpp b/clang/lib/Basic/FileSystemStatCache.cpp
index b71259e0d5c..7a01bffcd95 100644
--- a/clang/lib/Basic/FileSystemStatCache.cpp
+++ b/clang/lib/Basic/FileSystemStatCache.cpp
@@ -30,6 +30,16 @@ using namespace clang;
void FileSystemStatCache::anchor() { }
+static void copyStatusToFileData(const llvm::sys::fs::file_status &Status,
+ FileData &Data) {
+ Data.Size = Status.getSize();
+ Data.ModTime = Status.getLastModificationTime().toEpochTime();
+ Data.UniqueID = Status.getUniqueID();
+ Data.IsDirectory = is_directory(Status);
+ Data.IsNamedPipe = Status.type() == llvm::sys::fs::file_type::fifo_file;
+ Data.InPCH = false;
+}
+
/// FileSystemStatCache::get - Get the 'stat' information for the specified
/// path, using the cache to accelerate it if possible. This returns true if
/// the path does not exist or false if it exists.
@@ -39,19 +49,24 @@ void FileSystemStatCache::anchor() { }
/// success for directories (not files). On a successful file lookup, the
/// implementation can optionally fill in FileDescriptor with a valid
/// descriptor and the client guarantees that it will close it.
-bool FileSystemStatCache::get(const char *Path, struct stat &StatBuf,
- bool isFile, int *FileDescriptor,
- FileSystemStatCache *Cache) {
+bool FileSystemStatCache::get(const char *Path, FileData &Data, bool isFile,
+ int *FileDescriptor, FileSystemStatCache *Cache) {
LookupResult R;
bool isForDir = !isFile;
// If we have a cache, use it to resolve the stat query.
if (Cache)
- R = Cache->getStat(Path, StatBuf, isFile, FileDescriptor);
+ R = Cache->getStat(Path, Data, isFile, FileDescriptor);
else if (isForDir || !FileDescriptor) {
// If this is a directory or a file descriptor is not needed and we have
// no cache, just go to the file system.
- R = ::stat(Path, &StatBuf) != 0 ? CacheMissing : CacheExists;
+ llvm::sys::fs::file_status Status;
+ if (llvm::sys::fs::status(Path, Status)) {
+ R = CacheMissing;
+ } else {
+ R = CacheExists;
+ copyStatusToFileData(Status, Data);
+ }
} else {
// Otherwise, we have to go to the filesystem. We can always just use
// 'stat' here, but (for files) the client is asking whether the file exists
@@ -69,9 +84,11 @@ bool FileSystemStatCache::get(const char *Path, struct stat &StatBuf,
// Otherwise, the open succeeded. Do an fstat to get the information
// about the file. We'll end up returning the open file descriptor to the
// client to do what they please with it.
- if (::fstat(*FileDescriptor, &StatBuf) == 0)
+ llvm::sys::fs::file_status Status;
+ if (!llvm::sys::fs::status(*FileDescriptor, Status)) {
R = CacheExists;
- else {
+ copyStatusToFileData(Status, Data);
+ } else {
// fstat rarely fails. If it does, claim the initial open didn't
// succeed.
R = CacheMissing;
@@ -86,7 +103,7 @@ bool FileSystemStatCache::get(const char *Path, struct stat &StatBuf,
// If the path exists, make sure that its "directoryness" matches the clients
// demands.
- if (S_ISDIR(StatBuf.st_mode) != isForDir) {
+ if (Data.IsDirectory != isForDir) {
// If not, close the file if opened.
if (FileDescriptor && *FileDescriptor != -1) {
::close(*FileDescriptor);
@@ -99,12 +116,11 @@ bool FileSystemStatCache::get(const char *Path, struct stat &StatBuf,
return false;
}
-
MemorizeStatCalls::LookupResult
-MemorizeStatCalls::getStat(const char *Path, struct stat &StatBuf,
- bool isFile, int *FileDescriptor) {
- LookupResult Result = statChained(Path, StatBuf, isFile, FileDescriptor);
-
+MemorizeStatCalls::getStat(const char *Path, FileData &Data, bool isFile,
+ int *FileDescriptor) {
+ LookupResult Result = statChained(Path, Data, isFile, FileDescriptor);
+
// Do not cache failed stats, it is easy to construct common inconsistent
// situations if we do, and they are not important for PCH performance (which
// currently only needs the stats to construct the initial FileManager
@@ -113,8 +129,8 @@ MemorizeStatCalls::getStat(const char *Path, struct stat &StatBuf,
return Result;
// Cache file 'stat' results and directories with absolutely paths.
- if (!S_ISDIR(StatBuf.st_mode) || llvm::sys::path::is_absolute(Path))
- StatCalls[Path] = StatBuf;
-
+ if (!Data.IsDirectory || llvm::sys::path::is_absolute(Path))
+ StatCalls[Path] = Data;
+
return Result;
}
OpenPOWER on IntegriCloud