FileManager.cpp revision 898a061f69e1145bf89a987c08203132b9922a3c
110e286aa8d39fb51a21412850265d9dae74613eeChris Lattner//===--- FileManager.cpp - File System Probing and Caching ----------------===// 25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// The LLVM Compiler Infrastructure 45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// This file implements the FileManager interface. 115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// TODO: This should index all interesting directories with dirent calls. 155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// getdirentries ? 165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// opendir/readdir_r/closedir ? 175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/Basic/FileManager.h" 2110e286aa8d39fb51a21412850265d9dae74613eeChris Lattner#include "clang/Basic/FileSystemStatCache.h" 225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "llvm/ADT/SmallString.h" 23c070da46b896940aa2cbac416e5a2f8eee22d7d8Chris Lattner#include "llvm/ADT/StringExtras.h" 24389db16c63eec6ecfa9b235155252d8da766e94eArgyrios Kyrtzidis#include "llvm/Support/MemoryBuffer.h" 25d57a7ef9252964bc6c8471451d7bd395b0520cb8Chris Lattner#include "llvm/Support/raw_ostream.h" 264fed3f47f6b9e31d603c5c2d1f6d8ec2e1241e57Douglas Gregor#include "llvm/System/Path.h" 276bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek#include "llvm/Config/config.h" 28458fb10ef5ba2d7b375c6c64095c1458af0a5be3Benjamin Kramer#include <map> 29458fb10ef5ba2d7b375c6c64095c1458af0a5be3Benjamin Kramer#include <set> 30458fb10ef5ba2d7b375c6c64095c1458af0a5be3Benjamin Kramer#include <string> 315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// FIXME: Enhance libsystem to support inode and other fields. 345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include <sys/stat.h> 355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 363d2da3d765123e15290c38ba44f4434462bb88d5Ted Kremenek/// NON_EXISTENT_DIR - A special value distinct from null that is used to 375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// represent a dir name that doesn't exist on the disk. 383d2da3d765123e15290c38ba44f4434462bb88d5Ted Kremenek#define NON_EXISTENT_DIR reinterpret_cast<DirectoryEntry*>((intptr_t)-1) 395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 40f9f7766846a205bc900b578f944567e679b221aaChris Lattner/// NON_EXISTENT_FILE - A special value distinct from null that is used to 41f9f7766846a205bc900b578f944567e679b221aaChris Lattner/// represent a filename that doesn't exist on the disk. 42f9f7766846a205bc900b578f944567e679b221aaChris Lattner#define NON_EXISTENT_FILE reinterpret_cast<FileEntry*>((intptr_t)-1) 43f9f7766846a205bc900b578f944567e679b221aaChris Lattner 44f9f7766846a205bc900b578f944567e679b221aaChris Lattner 45f9f7766846a205bc900b578f944567e679b221aaChris LattnerFileEntry::~FileEntry() { 46f9f7766846a205bc900b578f944567e679b221aaChris Lattner // If this FileEntry owns an open file descriptor that never got used, close 47f9f7766846a205bc900b578f944567e679b221aaChris Lattner // it. 48f9f7766846a205bc900b578f944567e679b221aaChris Lattner if (FD != -1) ::close(FD); 49f9f7766846a205bc900b578f944567e679b221aaChris Lattner} 50f9f7766846a205bc900b578f944567e679b221aaChris Lattner 51cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek//===----------------------------------------------------------------------===// 52cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek// Windows. 53cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek//===----------------------------------------------------------------------===// 54cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek 556bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek#ifdef LLVM_ON_WIN32 566bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 57aa8b2d95bc108e8f3a443e4a936e1ed8a3cc1cc6Benjamin Kramer#define IS_DIR_SEPARATOR_CHAR(x) ((x) == '/' || (x) == '\\') 586bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 596bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremeneknamespace { 601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static std::string GetFullPath(const char *relPath) { 616bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek char *absPathStrPtr = _fullpath(NULL, relPath, 0); 626bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek assert(absPathStrPtr && "_fullpath() returned NULL!"); 636bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 646bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek std::string absPath(absPathStrPtr); 656bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 666bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek free(absPathStrPtr); 676bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek return absPath; 686bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek } 696bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek} 706bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 716bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekclass FileManager::UniqueDirContainer { 726bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek /// UniqueDirs - Cache from full path to existing directories/files. 736bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek /// 741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StringMap<DirectoryEntry> UniqueDirs; 756bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 766bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekpublic: 776bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek DirectoryEntry &getDirectory(const char *Name, struct stat &StatBuf) { 786bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek std::string FullPath(GetFullPath(Name)); 79f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner return UniqueDirs.GetOrCreateValue(FullPath).getValue(); 806bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek } 811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 82f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner size_t size() const { return UniqueDirs.size(); } 836bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek}; 846bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 856bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekclass FileManager::UniqueFileContainer { 866bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek /// UniqueFiles - Cache from full path to existing directories/files. 876bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek /// 8875368893339d89f6523c312b0a0eb23d438b6dffTed Kremenek llvm::StringMap<FileEntry, llvm::BumpPtrAllocator> UniqueFiles; 896bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 906bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekpublic: 916bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek FileEntry &getFile(const char *Name, struct stat &StatBuf) { 926bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek std::string FullPath(GetFullPath(Name)); 93c070da46b896940aa2cbac416e5a2f8eee22d7d8Chris Lattner 94c070da46b896940aa2cbac416e5a2f8eee22d7d8Chris Lattner // LowercaseString because Windows filesystem is case insensitive. 95c070da46b896940aa2cbac416e5a2f8eee22d7d8Chris Lattner FullPath = llvm::LowercaseString(FullPath); 96f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner return UniqueFiles.GetOrCreateValue(FullPath).getValue(); 976bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek } 986bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 99f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner size_t size() const { return UniqueFiles.size(); } 1006bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek}; 1016bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 102cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek//===----------------------------------------------------------------------===// 103cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek// Unix-like Systems. 104cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek//===----------------------------------------------------------------------===// 105cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek 1066bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek#else 1076bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 108aa8b2d95bc108e8f3a443e4a936e1ed8a3cc1cc6Benjamin Kramer#define IS_DIR_SEPARATOR_CHAR(x) ((x) == '/') 1096bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1106bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekclass FileManager::UniqueDirContainer { 1116bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek /// UniqueDirs - Cache from ID's to existing directories/files. 1121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::map<std::pair<dev_t, ino_t>, DirectoryEntry> UniqueDirs; 1136bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1146bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekpublic: 1156bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek DirectoryEntry &getDirectory(const char *Name, struct stat &StatBuf) { 1166bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek return UniqueDirs[std::make_pair(StatBuf.st_dev, StatBuf.st_ino)]; 1176bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek } 1186bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 119f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner size_t size() const { return UniqueDirs.size(); } 1206bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek}; 1216bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1226bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekclass FileManager::UniqueFileContainer { 1236bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek /// UniqueFiles - Cache from ID's to existing directories/files. 1246bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek std::set<FileEntry> UniqueFiles; 1256bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1266bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekpublic: 1276bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek FileEntry &getFile(const char *Name, struct stat &StatBuf) { 1286bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek return 1296bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek const_cast<FileEntry&>( 1306bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek *UniqueFiles.insert(FileEntry(StatBuf.st_dev, 13196438f319bb07d9a40564b5e01333f82c0c8a61eTed Kremenek StatBuf.st_ino, 13296438f319bb07d9a40564b5e01333f82c0c8a61eTed Kremenek StatBuf.st_mode)).first); 1336bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek } 1346bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 135f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner size_t size() const { return UniqueFiles.size(); } 1366bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek}; 1376bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1386bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek#endif 1396bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 140cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek//===----------------------------------------------------------------------===// 141cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek// Common logic. 142cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek//===----------------------------------------------------------------------===// 1436bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1447ad97ffa631af6ad678c79b38341ac995f347ce9Chris LattnerFileManager::FileManager(const FileSystemOptions &FSO) 1457ad97ffa631af6ad678c79b38341ac995f347ce9Chris Lattner : FileSystemOpts(FSO), 146f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner UniqueDirs(*new UniqueDirContainer()), 147f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner UniqueFiles(*new UniqueFileContainer()), 14896438f319bb07d9a40564b5e01333f82c0c8a61eTed Kremenek DirEntries(64), FileEntries(64), NextFileUID(0) { 1496bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek NumDirLookups = NumFileLookups = 0; 1506bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek NumDirCacheMisses = NumFileCacheMisses = 0; 1516bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek} 1526bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1536bb816a3b895e9c983d89b22d510dca58a0eb75eTed KremenekFileManager::~FileManager() { 1546bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek delete &UniqueDirs; 1556bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek delete &UniqueFiles; 156f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner for (unsigned i = 0, e = VirtualFileEntries.size(); i != e; ++i) 157f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner delete VirtualFileEntries[i]; 1586bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek} 1596bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 16010e286aa8d39fb51a21412850265d9dae74613eeChris Lattnervoid FileManager::addStatCache(FileSystemStatCache *statCache, 16110e286aa8d39fb51a21412850265d9dae74613eeChris Lattner bool AtBeginning) { 16252e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor assert(statCache && "No stat cache provided?"); 16352e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor if (AtBeginning || StatCache.get() == 0) { 16452e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor statCache->setNextStatCache(StatCache.take()); 16552e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor StatCache.reset(statCache); 16652e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor return; 16752e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor } 16852e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor 16910e286aa8d39fb51a21412850265d9dae74613eeChris Lattner FileSystemStatCache *LastCache = StatCache.get(); 17052e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor while (LastCache->getNextStatCache()) 17152e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor LastCache = LastCache->getNextStatCache(); 17252e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor 17352e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor LastCache->setNextStatCache(statCache); 17452e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor} 17552e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor 17610e286aa8d39fb51a21412850265d9dae74613eeChris Lattnervoid FileManager::removeStatCache(FileSystemStatCache *statCache) { 17752e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor if (!statCache) 17852e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor return; 17952e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor 18052e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor if (StatCache.get() == statCache) { 18152e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor // This is the first stat cache. 18252e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor StatCache.reset(StatCache->takeNextStatCache()); 18352e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor return; 18452e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor } 18552e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor 18652e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor // Find the stat cache in the list. 18710e286aa8d39fb51a21412850265d9dae74613eeChris Lattner FileSystemStatCache *PrevCache = StatCache.get(); 18852e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor while (PrevCache && PrevCache->getNextStatCache() != statCache) 18952e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor PrevCache = PrevCache->getNextStatCache(); 190f9f7766846a205bc900b578f944567e679b221aaChris Lattner 191f9f7766846a205bc900b578f944567e679b221aaChris Lattner assert(PrevCache && "Stat cache not found for removal"); 192f9f7766846a205bc900b578f944567e679b221aaChris Lattner PrevCache->setNextStatCache(statCache->getNextStatCache()); 19352e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor} 19452e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor 195057e567f1b375190779e5341f42861896cdee442Douglas Gregor/// \brief Retrieve the directory that the given file name resides in. 196057e567f1b375190779e5341f42861896cdee442Douglas Gregorstatic const DirectoryEntry *getDirectoryFromFile(FileManager &FileMgr, 19739b49bcaaddb1049234fca9500c0ac02c088e23dChris Lattner llvm::StringRef Filename) { 198057e567f1b375190779e5341f42861896cdee442Douglas Gregor // Figure out what directory it is in. If the string contains a / in it, 199057e567f1b375190779e5341f42861896cdee442Douglas Gregor // strip off everything after it. 200057e567f1b375190779e5341f42861896cdee442Douglas Gregor // FIXME: this logic should be in sys::Path. 201aa8b2d95bc108e8f3a443e4a936e1ed8a3cc1cc6Benjamin Kramer size_t SlashPos = Filename.size(); 202aa8b2d95bc108e8f3a443e4a936e1ed8a3cc1cc6Benjamin Kramer while (SlashPos != 0 && !IS_DIR_SEPARATOR_CHAR(Filename[SlashPos-1])) 203aa8b2d95bc108e8f3a443e4a936e1ed8a3cc1cc6Benjamin Kramer --SlashPos; 204aa8b2d95bc108e8f3a443e4a936e1ed8a3cc1cc6Benjamin Kramer 205f69a1f319bd3c846c4a9ab84ea615e4e37dfd359Chris Lattner // Use the current directory if file has no path component. 206aa8b2d95bc108e8f3a443e4a936e1ed8a3cc1cc6Benjamin Kramer if (SlashPos == 0) 20739b49bcaaddb1049234fca9500c0ac02c088e23dChris Lattner return FileMgr.getDirectory("."); 208057e567f1b375190779e5341f42861896cdee442Douglas Gregor 209f69a1f319bd3c846c4a9ab84ea615e4e37dfd359Chris Lattner if (SlashPos == Filename.size()-1) 210057e567f1b375190779e5341f42861896cdee442Douglas Gregor return 0; // If filename ends with a /, it's a directory. 211aa8b2d95bc108e8f3a443e4a936e1ed8a3cc1cc6Benjamin Kramer 212f69a1f319bd3c846c4a9ab84ea615e4e37dfd359Chris Lattner // Ignore repeated //'s. 213aa8b2d95bc108e8f3a443e4a936e1ed8a3cc1cc6Benjamin Kramer while (SlashPos != 0 && IS_DIR_SEPARATOR_CHAR(Filename[SlashPos-1])) 214f69a1f319bd3c846c4a9ab84ea615e4e37dfd359Chris Lattner --SlashPos; 215aa8b2d95bc108e8f3a443e4a936e1ed8a3cc1cc6Benjamin Kramer 21639b49bcaaddb1049234fca9500c0ac02c088e23dChris Lattner return FileMgr.getDirectory(Filename.substr(0, SlashPos)); 217057e567f1b375190779e5341f42861896cdee442Douglas Gregor} 218057e567f1b375190779e5341f42861896cdee442Douglas Gregor 2195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// getDirectory - Lookup, cache, and verify the specified directory. This 2205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// returns null if the directory doesn't exist. 2211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 22239b49bcaaddb1049234fca9500c0ac02c088e23dChris Lattnerconst DirectoryEntry *FileManager::getDirectory(llvm::StringRef Filename) { 2239a6ac540bab63380a4a78d8fad87f23c50878685John Thompson // stat doesn't like trailing separators (at least on Windows). 224aa8b2d95bc108e8f3a443e4a936e1ed8a3cc1cc6Benjamin Kramer if (Filename.size() > 1 && IS_DIR_SEPARATOR_CHAR(Filename.back())) 225f69a1f319bd3c846c4a9ab84ea615e4e37dfd359Chris Lattner Filename = Filename.substr(0, Filename.size()-1); 2269a6ac540bab63380a4a78d8fad87f23c50878685John Thompson 2275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumDirLookups; 2285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::StringMapEntry<DirectoryEntry *> &NamedDirEnt = 229f69a1f319bd3c846c4a9ab84ea615e4e37dfd359Chris Lattner DirEntries.GetOrCreateValue(Filename); 2301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // See if there is already an entry in the map. 2325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (NamedDirEnt.getValue()) 2333d2da3d765123e15290c38ba44f4434462bb88d5Ted Kremenek return NamedDirEnt.getValue() == NON_EXISTENT_DIR 2345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ? 0 : NamedDirEnt.getValue(); 2351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumDirCacheMisses; 2371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // By default, initialize it to invalid. 2393d2da3d765123e15290c38ba44f4434462bb88d5Ted Kremenek NamedDirEnt.setValue(NON_EXISTENT_DIR); 2401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the null-terminated directory name as stored as the key of the 2425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // DirEntries map. 2435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *InterndDirName = NamedDirEnt.getKeyData(); 2441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Check to see if the directory exists. 2465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer struct stat StatBuf; 247898a061f69e1145bf89a987c08203132b9922a3cChris Lattner if (getStatValue(InterndDirName, StatBuf, 0/*directory lookup*/)) 2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return 0; 2496bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 2505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // It exists. See if we have already opened a directory with the same inode. 2511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // This occurs when one dir is symlinked to another, for example. 2526bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek DirectoryEntry &UDE = UniqueDirs.getDirectory(InterndDirName, StatBuf); 2531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NamedDirEnt.setValue(&UDE); 2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (UDE.getName()) // Already have an entry with this inode, return it. 2565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return &UDE; 2571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, we don't have this directory yet, add it. We use the string 2595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // key from the DirEntries map as the string. 2605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer UDE.Name = InterndDirName; 2615f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return &UDE; 2625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 2635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// getFile - Lookup, cache, and verify the specified file. This returns null 2655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// if the file doesn't exist. 2661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 26739b49bcaaddb1049234fca9500c0ac02c088e23dChris Lattnerconst FileEntry *FileManager::getFile(llvm::StringRef Filename) { 2685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumFileLookups; 2691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // See if there is already an entry in the map. 2715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::StringMapEntry<FileEntry *> &NamedFileEnt = 272f69a1f319bd3c846c4a9ab84ea615e4e37dfd359Chris Lattner FileEntries.GetOrCreateValue(Filename); 2735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // See if there is already an entry in the map. 2755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (NamedFileEnt.getValue()) 2763d2da3d765123e15290c38ba44f4434462bb88d5Ted Kremenek return NamedFileEnt.getValue() == NON_EXISTENT_FILE 2775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ? 0 : NamedFileEnt.getValue(); 2781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumFileCacheMisses; 2805f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // By default, initialize it to invalid. 2823d2da3d765123e15290c38ba44f4434462bb88d5Ted Kremenek NamedFileEnt.setValue(NON_EXISTENT_FILE); 2835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 2841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the null-terminated file name as stored as the key of the 2865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FileEntries map. 2875f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *InterndFileName = NamedFileEnt.getKeyData(); 2881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 289f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner 290f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner // Look up the directory for the file. When looking up something like 291f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner // sys/foo.h we'll discover all of the search directories that have a 'sys' 292f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner // subdirectory. This will let us avoid having to waste time on known-to-fail 293f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner // searches when we go to find sys/bar.h, because all the search directories 294f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner // without a 'sys' subdir will get a cached failure result. 29539b49bcaaddb1049234fca9500c0ac02c088e23dChris Lattner const DirectoryEntry *DirInfo = getDirectoryFromFile(*this, Filename); 296057e567f1b375190779e5341f42861896cdee442Douglas Gregor if (DirInfo == 0) // Directory doesn't exist, file can't exist. 297057e567f1b375190779e5341f42861896cdee442Douglas Gregor return 0; 298057e567f1b375190779e5341f42861896cdee442Douglas Gregor 2995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FIXME: Use the directory info to prune this, before doing the stat syscall. 3005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FIXME: This will reduce the # syscalls. 3011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Nope, there isn't. Check to see if the file exists. 303898a061f69e1145bf89a987c08203132b9922a3cChris Lattner int FileDescriptor = -1; 3045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer struct stat StatBuf; 305898a061f69e1145bf89a987c08203132b9922a3cChris Lattner if (getStatValue(InterndFileName, StatBuf, &FileDescriptor)) 3065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return 0; 3071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 308bca6d125c77c93c7fa41798c15348175a6bb1267Ted Kremenek // It exists. See if we have already opened a file with the same inode. 3095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // This occurs when one dir is symlinked to another, for example. 3106bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek FileEntry &UFE = UniqueFiles.getFile(InterndFileName, StatBuf); 3111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NamedFileEnt.setValue(&UFE); 313898a061f69e1145bf89a987c08203132b9922a3cChris Lattner if (UFE.getName()) { // Already have an entry with this inode, return it. 314898a061f69e1145bf89a987c08203132b9922a3cChris Lattner // If the stat process opened the file, close it to avoid a FD leak. 315898a061f69e1145bf89a987c08203132b9922a3cChris Lattner if (FileDescriptor != -1) 316898a061f69e1145bf89a987c08203132b9922a3cChris Lattner close(FileDescriptor); 317898a061f69e1145bf89a987c08203132b9922a3cChris Lattner 3185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return &UFE; 319898a061f69e1145bf89a987c08203132b9922a3cChris Lattner } 3205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, we don't have this directory yet, add it. 3225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FIXME: Change the name to be a char* that points back to the 'FileEntries' 3235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // key. 3245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer UFE.Name = InterndFileName; 3255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer UFE.Size = StatBuf.st_size; 3265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer UFE.ModTime = StatBuf.st_mtime; 3275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer UFE.Dir = DirInfo; 3285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer UFE.UID = NextFileUID++; 329898a061f69e1145bf89a987c08203132b9922a3cChris Lattner UFE.FD = FileDescriptor; 3305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return &UFE; 3315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 333057e567f1b375190779e5341f42861896cdee442Douglas Gregorconst FileEntry * 334ec1b1cc006cef19e0a95d0ea6fbfd37d0d615066Benjamin KramerFileManager::getVirtualFile(llvm::StringRef Filename, off_t Size, 33539b49bcaaddb1049234fca9500c0ac02c088e23dChris Lattner time_t ModificationTime) { 336057e567f1b375190779e5341f42861896cdee442Douglas Gregor ++NumFileLookups; 337057e567f1b375190779e5341f42861896cdee442Douglas Gregor 338057e567f1b375190779e5341f42861896cdee442Douglas Gregor // See if there is already an entry in the map. 339057e567f1b375190779e5341f42861896cdee442Douglas Gregor llvm::StringMapEntry<FileEntry *> &NamedFileEnt = 340f69a1f319bd3c846c4a9ab84ea615e4e37dfd359Chris Lattner FileEntries.GetOrCreateValue(Filename); 341057e567f1b375190779e5341f42861896cdee442Douglas Gregor 342057e567f1b375190779e5341f42861896cdee442Douglas Gregor // See if there is already an entry in the map. 343057e567f1b375190779e5341f42861896cdee442Douglas Gregor if (NamedFileEnt.getValue()) 344057e567f1b375190779e5341f42861896cdee442Douglas Gregor return NamedFileEnt.getValue() == NON_EXISTENT_FILE 345057e567f1b375190779e5341f42861896cdee442Douglas Gregor ? 0 : NamedFileEnt.getValue(); 346057e567f1b375190779e5341f42861896cdee442Douglas Gregor 347057e567f1b375190779e5341f42861896cdee442Douglas Gregor ++NumFileCacheMisses; 348057e567f1b375190779e5341f42861896cdee442Douglas Gregor 349057e567f1b375190779e5341f42861896cdee442Douglas Gregor // By default, initialize it to invalid. 350057e567f1b375190779e5341f42861896cdee442Douglas Gregor NamedFileEnt.setValue(NON_EXISTENT_FILE); 351057e567f1b375190779e5341f42861896cdee442Douglas Gregor 35239b49bcaaddb1049234fca9500c0ac02c088e23dChris Lattner const DirectoryEntry *DirInfo = getDirectoryFromFile(*this, Filename); 353057e567f1b375190779e5341f42861896cdee442Douglas Gregor if (DirInfo == 0) // Directory doesn't exist, file can't exist. 354057e567f1b375190779e5341f42861896cdee442Douglas Gregor return 0; 355057e567f1b375190779e5341f42861896cdee442Douglas Gregor 356057e567f1b375190779e5341f42861896cdee442Douglas Gregor FileEntry *UFE = new FileEntry(); 357057e567f1b375190779e5341f42861896cdee442Douglas Gregor VirtualFileEntries.push_back(UFE); 358057e567f1b375190779e5341f42861896cdee442Douglas Gregor NamedFileEnt.setValue(UFE); 359057e567f1b375190779e5341f42861896cdee442Douglas Gregor 360f9f7766846a205bc900b578f944567e679b221aaChris Lattner // Get the null-terminated file name as stored as the key of the 361f9f7766846a205bc900b578f944567e679b221aaChris Lattner // FileEntries map. 362f9f7766846a205bc900b578f944567e679b221aaChris Lattner const char *InterndFileName = NamedFileEnt.getKeyData(); 363f9f7766846a205bc900b578f944567e679b221aaChris Lattner 364f9f7766846a205bc900b578f944567e679b221aaChris Lattner UFE->Name = InterndFileName; 365057e567f1b375190779e5341f42861896cdee442Douglas Gregor UFE->Size = Size; 366057e567f1b375190779e5341f42861896cdee442Douglas Gregor UFE->ModTime = ModificationTime; 367057e567f1b375190779e5341f42861896cdee442Douglas Gregor UFE->Dir = DirInfo; 368057e567f1b375190779e5341f42861896cdee442Douglas Gregor UFE->UID = NextFileUID++; 3693e15e0a7b4da6d906357b00b1bd2bba5ec3195edDouglas Gregor 3703e15e0a7b4da6d906357b00b1bd2bba5ec3195edDouglas Gregor // If this virtual file resolves to a file, also map that file to the 3713e15e0a7b4da6d906357b00b1bd2bba5ec3195edDouglas Gregor // newly-created file entry. 372898a061f69e1145bf89a987c08203132b9922a3cChris Lattner int FileDescriptor = -1; 3733e15e0a7b4da6d906357b00b1bd2bba5ec3195edDouglas Gregor struct stat StatBuf; 374898a061f69e1145bf89a987c08203132b9922a3cChris Lattner if (getStatValue(InterndFileName, StatBuf, &FileDescriptor)) 375f9f7766846a205bc900b578f944567e679b221aaChris Lattner return UFE; 376898a061f69e1145bf89a987c08203132b9922a3cChris Lattner 377898a061f69e1145bf89a987c08203132b9922a3cChris Lattner UFE->FD = FileDescriptor; 378f9f7766846a205bc900b578f944567e679b221aaChris Lattner llvm::sys::Path FilePath(UFE->Name); 379f9f7766846a205bc900b578f944567e679b221aaChris Lattner FilePath.makeAbsolute(); 380f9f7766846a205bc900b578f944567e679b221aaChris Lattner FileEntries[FilePath.str()] = UFE; 381057e567f1b375190779e5341f42861896cdee442Douglas Gregor return UFE; 382057e567f1b375190779e5341f42861896cdee442Douglas Gregor} 383057e567f1b375190779e5341f42861896cdee442Douglas Gregor 38467452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattnervoid FileManager::FixupRelativePath(llvm::sys::Path &path, 38567452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattner const FileSystemOptions &FSOpts) { 38667452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattner if (FSOpts.WorkingDir.empty() || path.isAbsolute()) return; 38767452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattner 38867452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattner llvm::sys::Path NewPath(FSOpts.WorkingDir); 38967452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattner NewPath.appendComponent(path.str()); 39067452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattner path = NewPath; 39167452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattner} 39267452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattner 39375dfb65c38d51772df9a00ce2d2feeefd55667adChris Lattnerllvm::MemoryBuffer *FileManager:: 39475dfb65c38d51772df9a00ce2d2feeefd55667adChris LattnergetBufferForFile(const FileEntry *Entry, std::string *ErrorStr) { 39575dfb65c38d51772df9a00ce2d2feeefd55667adChris Lattner llvm::StringRef Filename = Entry->getName(); 39675dfb65c38d51772df9a00ce2d2feeefd55667adChris Lattner if (FileSystemOpts.WorkingDir.empty()) 397f8f6129861f3972dab2c5a6cde29711ac780a7d0Chris Lattner return llvm::MemoryBuffer::getFile(Filename, ErrorStr, Entry->getSize()); 39875dfb65c38d51772df9a00ce2d2feeefd55667adChris Lattner 39975dfb65c38d51772df9a00ce2d2feeefd55667adChris Lattner llvm::sys::Path FilePath(Filename); 40075dfb65c38d51772df9a00ce2d2feeefd55667adChris Lattner FixupRelativePath(FilePath, FileSystemOpts); 401f8f6129861f3972dab2c5a6cde29711ac780a7d0Chris Lattner return llvm::MemoryBuffer::getFile(FilePath.c_str(), ErrorStr, 402f8f6129861f3972dab2c5a6cde29711ac780a7d0Chris Lattner Entry->getSize()); 40375dfb65c38d51772df9a00ce2d2feeefd55667adChris Lattner} 40467452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattner 405f69a1f319bd3c846c4a9ab84ea615e4e37dfd359Chris Lattnerllvm::MemoryBuffer *FileManager:: 40675dfb65c38d51772df9a00ce2d2feeefd55667adChris LattnergetBufferForFile(llvm::StringRef Filename, std::string *ErrorStr) { 407efc4be242b8c8f076ad4addd3598c4853ec50ac7Chris Lattner if (FileSystemOpts.WorkingDir.empty()) 40875dfb65c38d51772df9a00ce2d2feeefd55667adChris Lattner return llvm::MemoryBuffer::getFile(Filename, ErrorStr); 40967452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattner 41067452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattner llvm::sys::Path FilePath(Filename); 411389db16c63eec6ecfa9b235155252d8da766e94eArgyrios Kyrtzidis FixupRelativePath(FilePath, FileSystemOpts); 41275dfb65c38d51772df9a00ce2d2feeefd55667adChris Lattner return llvm::MemoryBuffer::getFile(FilePath.c_str(), ErrorStr); 413389db16c63eec6ecfa9b235155252d8da766e94eArgyrios Kyrtzidis} 414389db16c63eec6ecfa9b235155252d8da766e94eArgyrios Kyrtzidis 41510e286aa8d39fb51a21412850265d9dae74613eeChris Lattner/// getStatValue - Get the 'stat' information for the specified path, using the 41610e286aa8d39fb51a21412850265d9dae74613eeChris Lattner/// cache to accellerate it if possible. This returns true if the path does not 41710e286aa8d39fb51a21412850265d9dae74613eeChris Lattner/// exist or false if it exists. 418f9f7766846a205bc900b578f944567e679b221aaChris Lattner/// 419f9f7766846a205bc900b578f944567e679b221aaChris Lattner/// The isForDir member indicates whether this is a directory lookup or not. 420f9f7766846a205bc900b578f944567e679b221aaChris Lattner/// This will return failure if the lookup isn't the expected kind. 421f9f7766846a205bc900b578f944567e679b221aaChris Lattnerbool FileManager::getStatValue(const char *Path, struct stat &StatBuf, 422898a061f69e1145bf89a987c08203132b9922a3cChris Lattner int *FileDescriptor) { 42310e286aa8d39fb51a21412850265d9dae74613eeChris Lattner // FIXME: FileSystemOpts shouldn't be passed in here, all paths should be 42410e286aa8d39fb51a21412850265d9dae74613eeChris Lattner // absolute! 42511aa4b03b054cb9d3c201bba5632241145865e29Chris Lattner if (FileSystemOpts.WorkingDir.empty()) 426898a061f69e1145bf89a987c08203132b9922a3cChris Lattner return FileSystemStatCache::get(Path, StatBuf, FileDescriptor, 427898a061f69e1145bf89a987c08203132b9922a3cChris Lattner StatCache.get()); 42810e286aa8d39fb51a21412850265d9dae74613eeChris Lattner 42910e286aa8d39fb51a21412850265d9dae74613eeChris Lattner llvm::sys::Path FilePath(Path); 430389db16c63eec6ecfa9b235155252d8da766e94eArgyrios Kyrtzidis FixupRelativePath(FilePath, FileSystemOpts); 43111aa4b03b054cb9d3c201bba5632241145865e29Chris Lattner 432898a061f69e1145bf89a987c08203132b9922a3cChris Lattner return FileSystemStatCache::get(FilePath.c_str(), StatBuf, FileDescriptor, 433898a061f69e1145bf89a987c08203132b9922a3cChris Lattner StatCache.get()); 434389db16c63eec6ecfa9b235155252d8da766e94eArgyrios Kyrtzidis} 435389db16c63eec6ecfa9b235155252d8da766e94eArgyrios Kyrtzidis 43610e286aa8d39fb51a21412850265d9dae74613eeChris Lattner 43710e286aa8d39fb51a21412850265d9dae74613eeChris Lattner 4385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid FileManager::PrintStats() const { 4396cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "\n*** File Manager Stats:\n"; 4406cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << UniqueFiles.size() << " files found, " 4416cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer << UniqueDirs.size() << " dirs found.\n"; 4426cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << NumDirLookups << " dir lookups, " 4436cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer << NumDirCacheMisses << " dir cache misses.\n"; 4446cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << NumFileLookups << " file lookups, " 4456cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer << NumFileCacheMisses << " file cache misses.\n"; 4461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4476cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer //llvm::errs() << PagesMapped << BytesOfPagesMapped << FSLookups; 4485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4494fed3f47f6b9e31d603c5c2d1f6d8ec2e1241e57Douglas Gregor 450