FileManager.cpp revision e5d30e3b403539b10aaa52f03875a2243bf88904
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" 2355fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "llvm/Config/llvm-config.h" 24fbfd180495e7800975c6d9bdc6d24e706ef70e34Michael J. Spencer#include "llvm/Support/FileSystem.h" 25389db16c63eec6ecfa9b235155252d8da766e94eArgyrios Kyrtzidis#include "llvm/Support/MemoryBuffer.h" 2603013fa9a0bf1ef4b907f5fec006c8f4000fdd21Michael J. Spencer#include "llvm/Support/Path.h" 2755fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "llvm/Support/raw_ostream.h" 283a321e23f66128dbb986343927456ff6702af617Michael J. Spencer#include "llvm/Support/system_error.h" 29458fb10ef5ba2d7b375c6c64095c1458af0a5be3Benjamin Kramer#include <map> 30458fb10ef5ba2d7b375c6c64095c1458af0a5be3Benjamin Kramer#include <set> 31458fb10ef5ba2d7b375c6c64095c1458af0a5be3Benjamin Kramer#include <string> 32291fcf02980be85cf13c8a63bb036a19012311dfChris Lattner 33291fcf02980be85cf13c8a63bb036a19012311dfChris Lattner// FIXME: This is terrible, we need this for ::close. 34291fcf02980be85cf13c8a63bb036a19012311dfChris Lattner#if !defined(_MSC_VER) && !defined(__MINGW32__) 35291fcf02980be85cf13c8a63bb036a19012311dfChris Lattner#include <unistd.h> 36291fcf02980be85cf13c8a63bb036a19012311dfChris Lattner#include <sys/uio.h> 37291fcf02980be85cf13c8a63bb036a19012311dfChris Lattner#else 38291fcf02980be85cf13c8a63bb036a19012311dfChris Lattner#include <io.h> 396a1f49423baf6fa0358f396f0d926a3263cb5ff9Daniel Dunbar#ifndef S_ISFIFO 406a1f49423baf6fa0358f396f0d926a3263cb5ff9Daniel Dunbar#define S_ISFIFO(x) (0) 416a1f49423baf6fa0358f396f0d926a3263cb5ff9Daniel Dunbar#endif 42291fcf02980be85cf13c8a63bb036a19012311dfChris Lattner#endif 435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// FIXME: Enhance libsystem to support inode and other fields. 465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include <sys/stat.h> 475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 483d2da3d765123e15290c38ba44f4434462bb88d5Ted Kremenek/// NON_EXISTENT_DIR - A special value distinct from null that is used to 495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// represent a dir name that doesn't exist on the disk. 503d2da3d765123e15290c38ba44f4434462bb88d5Ted Kremenek#define NON_EXISTENT_DIR reinterpret_cast<DirectoryEntry*>((intptr_t)-1) 515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 52f9f7766846a205bc900b578f944567e679b221aaChris Lattner/// NON_EXISTENT_FILE - A special value distinct from null that is used to 53f9f7766846a205bc900b578f944567e679b221aaChris Lattner/// represent a filename that doesn't exist on the disk. 54f9f7766846a205bc900b578f944567e679b221aaChris Lattner#define NON_EXISTENT_FILE reinterpret_cast<FileEntry*>((intptr_t)-1) 55f9f7766846a205bc900b578f944567e679b221aaChris Lattner 56f9f7766846a205bc900b578f944567e679b221aaChris Lattner 57f9f7766846a205bc900b578f944567e679b221aaChris LattnerFileEntry::~FileEntry() { 58f9f7766846a205bc900b578f944567e679b221aaChris Lattner // If this FileEntry owns an open file descriptor that never got used, close 59f9f7766846a205bc900b578f944567e679b221aaChris Lattner // it. 60f9f7766846a205bc900b578f944567e679b221aaChris Lattner if (FD != -1) ::close(FD); 61f9f7766846a205bc900b578f944567e679b221aaChris Lattner} 62f9f7766846a205bc900b578f944567e679b221aaChris Lattner 63ce36ecd5a509af8fc5924d21694df36e8bc94a95Daniel Dunbarbool FileEntry::isNamedPipe() const { 646a1f49423baf6fa0358f396f0d926a3263cb5ff9Daniel Dunbar return S_ISFIFO(FileMode); 65ce36ecd5a509af8fc5924d21694df36e8bc94a95Daniel Dunbar} 66ce36ecd5a509af8fc5924d21694df36e8bc94a95Daniel Dunbar 67cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek//===----------------------------------------------------------------------===// 68cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek// Windows. 69cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek//===----------------------------------------------------------------------===// 70cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek 716bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek#ifdef LLVM_ON_WIN32 726bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 736bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremeneknamespace { 741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static std::string GetFullPath(const char *relPath) { 756bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek char *absPathStrPtr = _fullpath(NULL, relPath, 0); 766bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek assert(absPathStrPtr && "_fullpath() returned NULL!"); 776bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 786bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek std::string absPath(absPathStrPtr); 796bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 806bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek free(absPathStrPtr); 816bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek return absPath; 826bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek } 836bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek} 846bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 856bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekclass FileManager::UniqueDirContainer { 866bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek /// UniqueDirs - Cache from full path to existing directories/files. 876bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek /// 881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump llvm::StringMap<DirectoryEntry> UniqueDirs; 896bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 906bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekpublic: 919b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan /// getDirectory - Return an existing DirectoryEntry with the given 929b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan /// name if there is already one; otherwise create and return a 939b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan /// default-constructed DirectoryEntry. 949b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan DirectoryEntry &getDirectory(const char *Name, 959b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan const struct stat & /*StatBuf*/) { 966bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek std::string FullPath(GetFullPath(Name)); 97f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner return UniqueDirs.GetOrCreateValue(FullPath).getValue(); 986bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek } 991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 100f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner size_t size() const { return UniqueDirs.size(); } 1016bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek}; 1026bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1036bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekclass FileManager::UniqueFileContainer { 1046bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek /// UniqueFiles - Cache from full path to existing directories/files. 1056bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek /// 10675368893339d89f6523c312b0a0eb23d438b6dffTed Kremenek llvm::StringMap<FileEntry, llvm::BumpPtrAllocator> UniqueFiles; 1076bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1086bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekpublic: 1099b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan /// getFile - Return an existing FileEntry with the given name if 1109b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan /// there is already one; otherwise create and return a 1119b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan /// default-constructed FileEntry. 1129b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan FileEntry &getFile(const char *Name, const struct stat & /*StatBuf*/) { 1136bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek std::string FullPath(GetFullPath(Name)); 1149b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan 11590c7892b699c5405a81bcc339432ba2f4b50e0d6Benjamin Kramer // Lowercase string because Windows filesystem is case insensitive. 11690c7892b699c5405a81bcc339432ba2f4b50e0d6Benjamin Kramer FullPath = StringRef(FullPath).lower(); 117f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner return UniqueFiles.GetOrCreateValue(FullPath).getValue(); 1186bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek } 1196bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 120f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner size_t size() const { return UniqueFiles.size(); } 1213ce42c37b0ef6b10538f5040a33d19a6e6988d05Axel Naumann 122be779598aa70a71c56e5d576947ade53e249c602Axel Naumann void erase(const FileEntry *Entry) { 123be779598aa70a71c56e5d576947ade53e249c602Axel Naumann std::string FullPath(GetFullPath(Entry->getName())); 124be779598aa70a71c56e5d576947ade53e249c602Axel Naumann 125be779598aa70a71c56e5d576947ade53e249c602Axel Naumann // Lowercase string because Windows filesystem is case insensitive. 126be779598aa70a71c56e5d576947ade53e249c602Axel Naumann FullPath = StringRef(FullPath).lower(); 127be779598aa70a71c56e5d576947ade53e249c602Axel Naumann UniqueFiles.erase(FullPath); 128be779598aa70a71c56e5d576947ade53e249c602Axel Naumann } 1296bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek}; 1306bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 131cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek//===----------------------------------------------------------------------===// 132cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek// Unix-like Systems. 133cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek//===----------------------------------------------------------------------===// 134cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek 1356bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek#else 1366bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1376bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekclass FileManager::UniqueDirContainer { 1386bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek /// UniqueDirs - Cache from ID's to existing directories/files. 1391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump std::map<std::pair<dev_t, ino_t>, DirectoryEntry> UniqueDirs; 1406bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1416bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekpublic: 1429b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan /// getDirectory - Return an existing DirectoryEntry with the given 1439b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan /// ID's if there is already one; otherwise create and return a 1449b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan /// default-constructed DirectoryEntry. 1459b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan DirectoryEntry &getDirectory(const char * /*Name*/, 1469b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan const struct stat &StatBuf) { 1476bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek return UniqueDirs[std::make_pair(StatBuf.st_dev, StatBuf.st_ino)]; 1486bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek } 1496bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 150f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner size_t size() const { return UniqueDirs.size(); } 1516bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek}; 1526bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1536bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekclass FileManager::UniqueFileContainer { 1546bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek /// UniqueFiles - Cache from ID's to existing directories/files. 1556bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek std::set<FileEntry> UniqueFiles; 1566bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1576bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenekpublic: 1589b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan /// getFile - Return an existing FileEntry with the given ID's if 1599b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan /// there is already one; otherwise create and return a 1609b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan /// default-constructed FileEntry. 1619b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan FileEntry &getFile(const char * /*Name*/, const struct stat &StatBuf) { 1626bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek return 1636bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek const_cast<FileEntry&>( 1646bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek *UniqueFiles.insert(FileEntry(StatBuf.st_dev, 16596438f319bb07d9a40564b5e01333f82c0c8a61eTed Kremenek StatBuf.st_ino, 16696438f319bb07d9a40564b5e01333f82c0c8a61eTed Kremenek StatBuf.st_mode)).first); 1676bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek } 1686bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 169f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner size_t size() const { return UniqueFiles.size(); } 1703ce42c37b0ef6b10538f5040a33d19a6e6988d05Axel Naumann 1715ba0559f2f0ddd62de16547af514dbaf93b79585Axel Naumann void erase(const FileEntry *Entry) { UniqueFiles.erase(*Entry); } 1726bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek}; 1736bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1746bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek#endif 1756bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 176cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek//===----------------------------------------------------------------------===// 177cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek// Common logic. 178cb8d58b82859d2c56b679b901de38f416e2b6f48Ted Kremenek//===----------------------------------------------------------------------===// 1796bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1807ad97ffa631af6ad678c79b38341ac995f347ce9Chris LattnerFileManager::FileManager(const FileSystemOptions &FSO) 1817ad97ffa631af6ad678c79b38341ac995f347ce9Chris Lattner : FileSystemOpts(FSO), 1829b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan UniqueRealDirs(*new UniqueDirContainer()), 1839b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan UniqueRealFiles(*new UniqueFileContainer()), 1849b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan SeenDirEntries(64), SeenFileEntries(64), NextFileUID(0) { 1856bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek NumDirLookups = NumFileLookups = 0; 1866bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek NumDirCacheMisses = NumFileCacheMisses = 0; 1876bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek} 1886bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 1896bb816a3b895e9c983d89b22d510dca58a0eb75eTed KremenekFileManager::~FileManager() { 1909b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan delete &UniqueRealDirs; 1919b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan delete &UniqueRealFiles; 192f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner for (unsigned i = 0, e = VirtualFileEntries.size(); i != e; ++i) 193f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner delete VirtualFileEntries[i]; 1949b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan for (unsigned i = 0, e = VirtualDirectoryEntries.size(); i != e; ++i) 1959b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan delete VirtualDirectoryEntries[i]; 1966bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek} 1976bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 19810e286aa8d39fb51a21412850265d9dae74613eeChris Lattnervoid FileManager::addStatCache(FileSystemStatCache *statCache, 19910e286aa8d39fb51a21412850265d9dae74613eeChris Lattner bool AtBeginning) { 20052e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor assert(statCache && "No stat cache provided?"); 20152e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor if (AtBeginning || StatCache.get() == 0) { 20252e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor statCache->setNextStatCache(StatCache.take()); 20352e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor StatCache.reset(statCache); 20452e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor return; 20552e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor } 20652e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor 20710e286aa8d39fb51a21412850265d9dae74613eeChris Lattner FileSystemStatCache *LastCache = StatCache.get(); 20852e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor while (LastCache->getNextStatCache()) 20952e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor LastCache = LastCache->getNextStatCache(); 21052e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor 21152e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor LastCache->setNextStatCache(statCache); 21252e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor} 21352e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor 21410e286aa8d39fb51a21412850265d9dae74613eeChris Lattnervoid FileManager::removeStatCache(FileSystemStatCache *statCache) { 21552e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor if (!statCache) 21652e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor return; 21752e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor 21852e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor if (StatCache.get() == statCache) { 21952e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor // This is the first stat cache. 22052e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor StatCache.reset(StatCache->takeNextStatCache()); 22152e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor return; 22252e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor } 22352e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor 22452e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor // Find the stat cache in the list. 22510e286aa8d39fb51a21412850265d9dae74613eeChris Lattner FileSystemStatCache *PrevCache = StatCache.get(); 22652e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor while (PrevCache && PrevCache->getNextStatCache() != statCache) 22752e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor PrevCache = PrevCache->getNextStatCache(); 228f9f7766846a205bc900b578f944567e679b221aaChris Lattner 229f9f7766846a205bc900b578f944567e679b221aaChris Lattner assert(PrevCache && "Stat cache not found for removal"); 230f9f7766846a205bc900b578f944567e679b221aaChris Lattner PrevCache->setNextStatCache(statCache->getNextStatCache()); 23152e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor} 23252e7108f51a4a9f4d6e84f33fb594d06e1d79560Douglas Gregor 23398be86038b1e891a05583061c55dfa974150eb2cManuel Klimekvoid FileManager::clearStatCaches() { 23498be86038b1e891a05583061c55dfa974150eb2cManuel Klimek StatCache.reset(0); 23598be86038b1e891a05583061c55dfa974150eb2cManuel Klimek} 23698be86038b1e891a05583061c55dfa974150eb2cManuel Klimek 237057e567f1b375190779e5341f42861896cdee442Douglas Gregor/// \brief Retrieve the directory that the given file name resides in. 2389b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan/// Filename can point to either a real file or a virtual file. 239057e567f1b375190779e5341f42861896cdee442Douglas Gregorstatic const DirectoryEntry *getDirectoryFromFile(FileManager &FileMgr, 2406e975c4517958bcc11c834336d340797356058dbDouglas Gregor StringRef Filename, 2416e975c4517958bcc11c834336d340797356058dbDouglas Gregor bool CacheFailure) { 24221af8878b96ab1f9b077407ca3c512e5dc5d0ad6Zhanyong Wan if (Filename.empty()) 24321af8878b96ab1f9b077407ca3c512e5dc5d0ad6Zhanyong Wan return NULL; 2449b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan 24521af8878b96ab1f9b077407ca3c512e5dc5d0ad6Zhanyong Wan if (llvm::sys::path::is_separator(Filename[Filename.size() - 1])) 24621af8878b96ab1f9b077407ca3c512e5dc5d0ad6Zhanyong Wan return NULL; // If Filename is a directory. 247aa8b2d95bc108e8f3a443e4a936e1ed8a3cc1cc6Benjamin Kramer 2485f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef DirName = llvm::sys::path::parent_path(Filename); 249f69a1f319bd3c846c4a9ab84ea615e4e37dfd359Chris Lattner // Use the current directory if file has no path component. 25021af8878b96ab1f9b077407ca3c512e5dc5d0ad6Zhanyong Wan if (DirName.empty()) 25121af8878b96ab1f9b077407ca3c512e5dc5d0ad6Zhanyong Wan DirName = "."; 252aa8b2d95bc108e8f3a443e4a936e1ed8a3cc1cc6Benjamin Kramer 2536e975c4517958bcc11c834336d340797356058dbDouglas Gregor return FileMgr.getDirectory(DirName, CacheFailure); 254057e567f1b375190779e5341f42861896cdee442Douglas Gregor} 255057e567f1b375190779e5341f42861896cdee442Douglas Gregor 2569b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan/// Add all ancestors of the given path (pointing to either a file or 2579b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan/// a directory) as virtual directories. 2585f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnervoid FileManager::addAncestorsAsVirtualDirs(StringRef Path) { 2595f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef DirName = llvm::sys::path::parent_path(Path); 26021af8878b96ab1f9b077407ca3c512e5dc5d0ad6Zhanyong Wan if (DirName.empty()) 2619b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan return; 2629b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan 2639b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan llvm::StringMapEntry<DirectoryEntry *> &NamedDirEnt = 2649b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan SeenDirEntries.GetOrCreateValue(DirName); 2659b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan 2669b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // When caching a virtual directory, we always cache its ancestors 2679b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // at the same time. Therefore, if DirName is already in the cache, 2689b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // we don't need to recurse as its ancestors must also already be in 2699b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // the cache. 2709b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan if (NamedDirEnt.getValue()) 2719b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan return; 2729b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan 2739b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // Add the virtual directory to the cache. 2749b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan DirectoryEntry *UDE = new DirectoryEntry; 2759b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan UDE->Name = NamedDirEnt.getKeyData(); 2769b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan NamedDirEnt.setValue(UDE); 2779b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan VirtualDirectoryEntries.push_back(UDE); 2789b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan 2799b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // Recursively add the other ancestors. 2809b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan addAncestorsAsVirtualDirs(DirName); 2819b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan} 2829b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan 2836e975c4517958bcc11c834336d340797356058dbDouglas Gregorconst DirectoryEntry *FileManager::getDirectory(StringRef DirName, 2846e975c4517958bcc11c834336d340797356058dbDouglas Gregor bool CacheFailure) { 285759a4b40cab9dd04683a548f998ebe2e443ca6b4NAKAMURA Takumi // stat doesn't like trailing separators except for root directory. 286678a3ead409516d8e24831297b9a3bb98f6217c3NAKAMURA Takumi // At least, on Win32 MSVCRT, stat() cannot strip trailing '/'. 287678a3ead409516d8e24831297b9a3bb98f6217c3NAKAMURA Takumi // (though it can strip '\\') 288759a4b40cab9dd04683a548f998ebe2e443ca6b4NAKAMURA Takumi if (DirName.size() > 1 && 289759a4b40cab9dd04683a548f998ebe2e443ca6b4NAKAMURA Takumi DirName != llvm::sys::path::root_path(DirName) && 290759a4b40cab9dd04683a548f998ebe2e443ca6b4NAKAMURA Takumi llvm::sys::path::is_separator(DirName.back())) 291678a3ead409516d8e24831297b9a3bb98f6217c3NAKAMURA Takumi DirName = DirName.substr(0, DirName.size()-1); 292678a3ead409516d8e24831297b9a3bb98f6217c3NAKAMURA Takumi 2935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumDirLookups; 2945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::StringMapEntry<DirectoryEntry *> &NamedDirEnt = 2959b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan SeenDirEntries.GetOrCreateValue(DirName); 2961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2979b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // See if there was already an entry in the map. Note that the map 2989b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // contains both virtual and real directories. 2995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (NamedDirEnt.getValue()) 3003d2da3d765123e15290c38ba44f4434462bb88d5Ted Kremenek return NamedDirEnt.getValue() == NON_EXISTENT_DIR 3015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ? 0 : NamedDirEnt.getValue(); 3021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumDirCacheMisses; 3041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // By default, initialize it to invalid. 3063d2da3d765123e15290c38ba44f4434462bb88d5Ted Kremenek NamedDirEnt.setValue(NON_EXISTENT_DIR); 3071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3085f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the null-terminated directory name as stored as the key of the 3099b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // SeenDirEntries map. 3105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *InterndDirName = NamedDirEnt.getKeyData(); 3111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Check to see if the directory exists. 3135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer struct stat StatBuf; 314e5d30e3b403539b10aaa52f03875a2243bf88904Argyrios Kyrtzidis if (getStatValue(InterndDirName, StatBuf, false, 0/*directory lookup*/)) { 3159b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // There's no real directory at the given path. 3166e975c4517958bcc11c834336d340797356058dbDouglas Gregor if (!CacheFailure) 3176e975c4517958bcc11c834336d340797356058dbDouglas Gregor SeenDirEntries.erase(DirName); 3185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return 0; 3199b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan } 3206bb816a3b895e9c983d89b22d510dca58a0eb75eTed Kremenek 3219b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // It exists. See if we have already opened a directory with the 3229b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // same inode (this occurs on Unix-like systems when one dir is 3239b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // symlinked to another, for example) or the same path (on 3249b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // Windows). 3259b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan DirectoryEntry &UDE = UniqueRealDirs.getDirectory(InterndDirName, StatBuf); 3261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NamedDirEnt.setValue(&UDE); 3289b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan if (!UDE.getName()) { 3299b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // We don't have this directory yet, add it. We use the string 3309b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // key from the SeenDirEntries map as the string. 3319b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan UDE.Name = InterndDirName; 3329b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan } 3331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return &UDE; 3355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 3365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3376e975c4517958bcc11c834336d340797356058dbDouglas Gregorconst FileEntry *FileManager::getFile(StringRef Filename, bool openFile, 3386e975c4517958bcc11c834336d340797356058dbDouglas Gregor bool CacheFailure) { 3395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumFileLookups; 3401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // See if there is already an entry in the map. 3425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer llvm::StringMapEntry<FileEntry *> &NamedFileEnt = 3439b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan SeenFileEntries.GetOrCreateValue(Filename); 3445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // See if there is already an entry in the map. 3465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (NamedFileEnt.getValue()) 3473d2da3d765123e15290c38ba44f4434462bb88d5Ted Kremenek return NamedFileEnt.getValue() == NON_EXISTENT_FILE 3485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ? 0 : NamedFileEnt.getValue(); 3491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ++NumFileCacheMisses; 3515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // By default, initialize it to invalid. 3533d2da3d765123e15290c38ba44f4434462bb88d5Ted Kremenek NamedFileEnt.setValue(NON_EXISTENT_FILE); 3545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Get the null-terminated file name as stored as the key of the 3569b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // SeenFileEntries map. 3575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const char *InterndFileName = NamedFileEnt.getKeyData(); 3581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 359f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner // Look up the directory for the file. When looking up something like 360f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner // sys/foo.h we'll discover all of the search directories that have a 'sys' 361f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner // subdirectory. This will let us avoid having to waste time on known-to-fail 362f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner // searches when we go to find sys/bar.h, because all the search directories 363f3e8a9961d000fb9e093593b6a1bf72313b90d06Chris Lattner // without a 'sys' subdir will get a cached failure result. 3646e975c4517958bcc11c834336d340797356058dbDouglas Gregor const DirectoryEntry *DirInfo = getDirectoryFromFile(*this, Filename, 3656e975c4517958bcc11c834336d340797356058dbDouglas Gregor CacheFailure); 3666e975c4517958bcc11c834336d340797356058dbDouglas Gregor if (DirInfo == 0) { // Directory doesn't exist, file can't exist. 3676e975c4517958bcc11c834336d340797356058dbDouglas Gregor if (!CacheFailure) 3686e975c4517958bcc11c834336d340797356058dbDouglas Gregor SeenFileEntries.erase(Filename); 3696e975c4517958bcc11c834336d340797356058dbDouglas Gregor 370057e567f1b375190779e5341f42861896cdee442Douglas Gregor return 0; 3716e975c4517958bcc11c834336d340797356058dbDouglas Gregor } 3726e975c4517958bcc11c834336d340797356058dbDouglas Gregor 3735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FIXME: Use the directory info to prune this, before doing the stat syscall. 3745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FIXME: This will reduce the # syscalls. 3751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Nope, there isn't. Check to see if the file exists. 377898a061f69e1145bf89a987c08203132b9922a3cChris Lattner int FileDescriptor = -1; 3785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer struct stat StatBuf; 379e5d30e3b403539b10aaa52f03875a2243bf88904Argyrios Kyrtzidis if (getStatValue(InterndFileName, StatBuf, true, 380e5d30e3b403539b10aaa52f03875a2243bf88904Argyrios Kyrtzidis openFile ? &FileDescriptor : 0)) { 3819b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // There's no real file at the given path. 3826e975c4517958bcc11c834336d340797356058dbDouglas Gregor if (!CacheFailure) 3836e975c4517958bcc11c834336d340797356058dbDouglas Gregor SeenFileEntries.erase(Filename); 3846e975c4517958bcc11c834336d340797356058dbDouglas Gregor 3855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return 0; 3869b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan } 3871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3883cd0128ce49abe658d1858c541e836e57959e04aArgyrios Kyrtzidis if (FileDescriptor != -1 && !openFile) { 3893cd0128ce49abe658d1858c541e836e57959e04aArgyrios Kyrtzidis close(FileDescriptor); 3903cd0128ce49abe658d1858c541e836e57959e04aArgyrios Kyrtzidis FileDescriptor = -1; 3913cd0128ce49abe658d1858c541e836e57959e04aArgyrios Kyrtzidis } 3923cd0128ce49abe658d1858c541e836e57959e04aArgyrios Kyrtzidis 393bca6d125c77c93c7fa41798c15348175a6bb1267Ted Kremenek // It exists. See if we have already opened a file with the same inode. 3945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // This occurs when one dir is symlinked to another, for example. 3959b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan FileEntry &UFE = UniqueRealFiles.getFile(InterndFileName, StatBuf); 3961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer NamedFileEnt.setValue(&UFE); 398898a061f69e1145bf89a987c08203132b9922a3cChris Lattner if (UFE.getName()) { // Already have an entry with this inode, return it. 399898a061f69e1145bf89a987c08203132b9922a3cChris Lattner // If the stat process opened the file, close it to avoid a FD leak. 400898a061f69e1145bf89a987c08203132b9922a3cChris Lattner if (FileDescriptor != -1) 401898a061f69e1145bf89a987c08203132b9922a3cChris Lattner close(FileDescriptor); 4029b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan 4035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return &UFE; 404898a061f69e1145bf89a987c08203132b9922a3cChris Lattner } 4055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 4065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, we don't have this directory yet, add it. 4079b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // FIXME: Change the name to be a char* that points back to the 4089b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // 'SeenFileEntries' key. 4095f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer UFE.Name = InterndFileName; 4105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer UFE.Size = StatBuf.st_size; 4115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer UFE.ModTime = StatBuf.st_mtime; 4125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer UFE.Dir = DirInfo; 4135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer UFE.UID = NextFileUID++; 414898a061f69e1145bf89a987c08203132b9922a3cChris Lattner UFE.FD = FileDescriptor; 4155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer return &UFE; 4165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 4175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 418057e567f1b375190779e5341f42861896cdee442Douglas Gregorconst FileEntry * 4195f9e272e632e951b1efe824cd16acb4d96077930Chris LattnerFileManager::getVirtualFile(StringRef Filename, off_t Size, 42039b49bcaaddb1049234fca9500c0ac02c088e23dChris Lattner time_t ModificationTime) { 421057e567f1b375190779e5341f42861896cdee442Douglas Gregor ++NumFileLookups; 422057e567f1b375190779e5341f42861896cdee442Douglas Gregor 423057e567f1b375190779e5341f42861896cdee442Douglas Gregor // See if there is already an entry in the map. 424057e567f1b375190779e5341f42861896cdee442Douglas Gregor llvm::StringMapEntry<FileEntry *> &NamedFileEnt = 4259b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan SeenFileEntries.GetOrCreateValue(Filename); 426057e567f1b375190779e5341f42861896cdee442Douglas Gregor 427057e567f1b375190779e5341f42861896cdee442Douglas Gregor // See if there is already an entry in the map. 42804331169f04198eb769925fa17696a21989c9d8bAxel Naumann if (NamedFileEnt.getValue() && NamedFileEnt.getValue() != NON_EXISTENT_FILE) 42904331169f04198eb769925fa17696a21989c9d8bAxel Naumann return NamedFileEnt.getValue(); 430057e567f1b375190779e5341f42861896cdee442Douglas Gregor 431057e567f1b375190779e5341f42861896cdee442Douglas Gregor ++NumFileCacheMisses; 432057e567f1b375190779e5341f42861896cdee442Douglas Gregor 433057e567f1b375190779e5341f42861896cdee442Douglas Gregor // By default, initialize it to invalid. 434057e567f1b375190779e5341f42861896cdee442Douglas Gregor NamedFileEnt.setValue(NON_EXISTENT_FILE); 435057e567f1b375190779e5341f42861896cdee442Douglas Gregor 4369b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan addAncestorsAsVirtualDirs(Filename); 4378ef6c8cb6c5627240e2339fd7062c9873f821d7eDouglas Gregor FileEntry *UFE = 0; 4389b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan 4399b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // Now that all ancestors of Filename are in the cache, the 4409b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // following call is guaranteed to find the DirectoryEntry from the 4419b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // cache. 4426e975c4517958bcc11c834336d340797356058dbDouglas Gregor const DirectoryEntry *DirInfo = getDirectoryFromFile(*this, Filename, 4436e975c4517958bcc11c834336d340797356058dbDouglas Gregor /*CacheFailure=*/true); 4449b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan assert(DirInfo && 4459b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan "The directory of a virtual file should already be in the cache."); 4469b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan 4479b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // Check to see if the file exists. If so, drop the virtual file 4489b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan struct stat StatBuf; 4499b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan const char *InterndFileName = NamedFileEnt.getKeyData(); 450e5d30e3b403539b10aaa52f03875a2243bf88904Argyrios Kyrtzidis if (getStatValue(InterndFileName, StatBuf, true, 0) == 0) { 4519b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan StatBuf.st_size = Size; 4529b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan StatBuf.st_mtime = ModificationTime; 4539b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan UFE = &UniqueRealFiles.getFile(InterndFileName, StatBuf); 4549b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan 4559b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan NamedFileEnt.setValue(UFE); 4569b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan 4579b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // If we had already opened this file, close it now so we don't 4589b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // leak the descriptor. We're not going to use the file 4599b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // descriptor anyway, since this is a virtual file. 4609b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan if (UFE->FD != -1) { 4619b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan close(UFE->FD); 4629b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan UFE->FD = -1; 4638ef6c8cb6c5627240e2339fd7062c9873f821d7eDouglas Gregor } 4649b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan 4659b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan // If we already have an entry with this inode, return it. 4669b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan if (UFE->getName()) 4679b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan return UFE; 4688ef6c8cb6c5627240e2339fd7062c9873f821d7eDouglas Gregor } 469057e567f1b375190779e5341f42861896cdee442Douglas Gregor 4708ef6c8cb6c5627240e2339fd7062c9873f821d7eDouglas Gregor if (!UFE) { 4718ef6c8cb6c5627240e2339fd7062c9873f821d7eDouglas Gregor UFE = new FileEntry(); 4728ef6c8cb6c5627240e2339fd7062c9873f821d7eDouglas Gregor VirtualFileEntries.push_back(UFE); 4738ef6c8cb6c5627240e2339fd7062c9873f821d7eDouglas Gregor NamedFileEnt.setValue(UFE); 4748ef6c8cb6c5627240e2339fd7062c9873f821d7eDouglas Gregor } 475057e567f1b375190779e5341f42861896cdee442Douglas Gregor 476f9f7766846a205bc900b578f944567e679b221aaChris Lattner UFE->Name = InterndFileName; 477057e567f1b375190779e5341f42861896cdee442Douglas Gregor UFE->Size = Size; 478057e567f1b375190779e5341f42861896cdee442Douglas Gregor UFE->ModTime = ModificationTime; 479057e567f1b375190779e5341f42861896cdee442Douglas Gregor UFE->Dir = DirInfo; 480057e567f1b375190779e5341f42861896cdee442Douglas Gregor UFE->UID = NextFileUID++; 4818ef6c8cb6c5627240e2339fd7062c9873f821d7eDouglas Gregor UFE->FD = -1; 482057e567f1b375190779e5341f42861896cdee442Douglas Gregor return UFE; 483057e567f1b375190779e5341f42861896cdee442Douglas Gregor} 484057e567f1b375190779e5341f42861896cdee442Douglas Gregor 4855f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnervoid FileManager::FixupRelativePath(SmallVectorImpl<char> &path) const { 4865f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef pathRef(path.data(), path.size()); 487af036a6c25f540a9daf51e721485ae6d0e645bd8Anders Carlsson 4882e2468e2d2ccbb9a38fe3b6b754009af7e5d39a9Anders Carlsson if (FileSystemOpts.WorkingDir.empty() 4892e2468e2d2ccbb9a38fe3b6b754009af7e5d39a9Anders Carlsson || llvm::sys::path::is_absolute(pathRef)) 490256053b31e697fdf0cc48f17d621c82fc3b8dff0Michael J. Spencer return; 491256053b31e697fdf0cc48f17d621c82fc3b8dff0Michael J. Spencer 492f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<128> NewPath(FileSystemOpts.WorkingDir); 493af036a6c25f540a9daf51e721485ae6d0e645bd8Anders Carlsson llvm::sys::path::append(NewPath, pathRef); 49467452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattner path = NewPath; 49567452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattner} 49667452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattner 49775dfb65c38d51772df9a00ce2d2feeefd55667adChris Lattnerllvm::MemoryBuffer *FileManager:: 498ff398965a5abfaf5bc47bc022876f56a28e5b9a7Argyrios KyrtzidisgetBufferForFile(const FileEntry *Entry, std::string *ErrorStr, 499ff398965a5abfaf5bc47bc022876f56a28e5b9a7Argyrios Kyrtzidis bool isVolatile) { 5006f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<llvm::MemoryBuffer> Result; 5013a321e23f66128dbb986343927456ff6702af617Michael J. Spencer llvm::error_code ec; 5025cc1c738b0c51af55cbfe7672c284c19f8e30eb2Chris Lattner 503ff398965a5abfaf5bc47bc022876f56a28e5b9a7Argyrios Kyrtzidis uint64_t FileSize = Entry->getSize(); 504ff398965a5abfaf5bc47bc022876f56a28e5b9a7Argyrios Kyrtzidis // If there's a high enough chance that the file have changed since we 505ff398965a5abfaf5bc47bc022876f56a28e5b9a7Argyrios Kyrtzidis // got its size, force a stat before opening it. 506ff398965a5abfaf5bc47bc022876f56a28e5b9a7Argyrios Kyrtzidis if (isVolatile) 507ff398965a5abfaf5bc47bc022876f56a28e5b9a7Argyrios Kyrtzidis FileSize = -1; 508ff398965a5abfaf5bc47bc022876f56a28e5b9a7Argyrios Kyrtzidis 509a8d530e3ad52cca33a81185ccc9518eab23ddb11Argyrios Kyrtzidis const char *Filename = Entry->getName(); 510a8d530e3ad52cca33a81185ccc9518eab23ddb11Argyrios Kyrtzidis // If the file is already open, use the open file descriptor. 511a8d530e3ad52cca33a81185ccc9518eab23ddb11Argyrios Kyrtzidis if (Entry->FD != -1) { 512ff398965a5abfaf5bc47bc022876f56a28e5b9a7Argyrios Kyrtzidis ec = llvm::MemoryBuffer::getOpenFile(Entry->FD, Filename, Result, FileSize); 513a8d530e3ad52cca33a81185ccc9518eab23ddb11Argyrios Kyrtzidis if (ErrorStr) 514a8d530e3ad52cca33a81185ccc9518eab23ddb11Argyrios Kyrtzidis *ErrorStr = ec.message(); 515a8d530e3ad52cca33a81185ccc9518eab23ddb11Argyrios Kyrtzidis 516a8d530e3ad52cca33a81185ccc9518eab23ddb11Argyrios Kyrtzidis close(Entry->FD); 517a8d530e3ad52cca33a81185ccc9518eab23ddb11Argyrios Kyrtzidis Entry->FD = -1; 518a8d530e3ad52cca33a81185ccc9518eab23ddb11Argyrios Kyrtzidis return Result.take(); 519a8d530e3ad52cca33a81185ccc9518eab23ddb11Argyrios Kyrtzidis } 520a8d530e3ad52cca33a81185ccc9518eab23ddb11Argyrios Kyrtzidis 521a8d530e3ad52cca33a81185ccc9518eab23ddb11Argyrios Kyrtzidis // Otherwise, open the file. 522a8d530e3ad52cca33a81185ccc9518eab23ddb11Argyrios Kyrtzidis 523a8d530e3ad52cca33a81185ccc9518eab23ddb11Argyrios Kyrtzidis if (FileSystemOpts.WorkingDir.empty()) { 524ff398965a5abfaf5bc47bc022876f56a28e5b9a7Argyrios Kyrtzidis ec = llvm::MemoryBuffer::getFile(Filename, Result, FileSize); 5254eeebc464e1f968d9968a4786c82558f18ac2ed8Michael J. Spencer if (ec && ErrorStr) 5263a321e23f66128dbb986343927456ff6702af617Michael J. Spencer *ErrorStr = ec.message(); 5274eeebc464e1f968d9968a4786c82558f18ac2ed8Michael J. Spencer return Result.take(); 5285cc1c738b0c51af55cbfe7672c284c19f8e30eb2Chris Lattner } 529af036a6c25f540a9daf51e721485ae6d0e645bd8Anders Carlsson 530f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<128> FilePath(Entry->getName()); 53103fd362dbf6fcd077df566fe2ac3165be668323bAnders Carlsson FixupRelativePath(FilePath); 532ff398965a5abfaf5bc47bc022876f56a28e5b9a7Argyrios Kyrtzidis ec = llvm::MemoryBuffer::getFile(FilePath.str(), Result, FileSize); 5334eeebc464e1f968d9968a4786c82558f18ac2ed8Michael J. Spencer if (ec && ErrorStr) 5343a321e23f66128dbb986343927456ff6702af617Michael J. Spencer *ErrorStr = ec.message(); 5354eeebc464e1f968d9968a4786c82558f18ac2ed8Michael J. Spencer return Result.take(); 53675dfb65c38d51772df9a00ce2d2feeefd55667adChris Lattner} 53767452f51aec1ad8a3e4c6622c0c57c5d8dc1b6a3Chris Lattner 538f69a1f319bd3c846c4a9ab84ea615e4e37dfd359Chris Lattnerllvm::MemoryBuffer *FileManager:: 5395f9e272e632e951b1efe824cd16acb4d96077930Chris LattnergetBufferForFile(StringRef Filename, std::string *ErrorStr) { 5406f42b62b6194f53bcbc349f5d17388e1936535d7Dylan Noblesmith OwningPtr<llvm::MemoryBuffer> Result; 5413a321e23f66128dbb986343927456ff6702af617Michael J. Spencer llvm::error_code ec; 5423a321e23f66128dbb986343927456ff6702af617Michael J. Spencer if (FileSystemOpts.WorkingDir.empty()) { 5434eeebc464e1f968d9968a4786c82558f18ac2ed8Michael J. Spencer ec = llvm::MemoryBuffer::getFile(Filename, Result); 5444eeebc464e1f968d9968a4786c82558f18ac2ed8Michael J. Spencer if (ec && ErrorStr) 5453a321e23f66128dbb986343927456ff6702af617Michael J. Spencer *ErrorStr = ec.message(); 5464eeebc464e1f968d9968a4786c82558f18ac2ed8Michael J. Spencer return Result.take(); 5473a321e23f66128dbb986343927456ff6702af617Michael J. Spencer } 5483a321e23f66128dbb986343927456ff6702af617Michael J. Spencer 549f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<128> FilePath(Filename); 55003fd362dbf6fcd077df566fe2ac3165be668323bAnders Carlsson FixupRelativePath(FilePath); 5514eeebc464e1f968d9968a4786c82558f18ac2ed8Michael J. Spencer ec = llvm::MemoryBuffer::getFile(FilePath.c_str(), Result); 5524eeebc464e1f968d9968a4786c82558f18ac2ed8Michael J. Spencer if (ec && ErrorStr) 5533a321e23f66128dbb986343927456ff6702af617Michael J. Spencer *ErrorStr = ec.message(); 5544eeebc464e1f968d9968a4786c82558f18ac2ed8Michael J. Spencer return Result.take(); 555389db16c63eec6ecfa9b235155252d8da766e94eArgyrios Kyrtzidis} 556389db16c63eec6ecfa9b235155252d8da766e94eArgyrios Kyrtzidis 5579b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan/// getStatValue - Get the 'stat' information for the specified path, 5589b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan/// using the cache to accelerate it if possible. This returns true 5599b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan/// if the path points to a virtual file or does not exist, or returns 5609b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan/// false if it's an existent real file. If FileDescriptor is NULL, 5619b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan/// do directory look-up instead of file look-up. 562f9f7766846a205bc900b578f944567e679b221aaChris Lattnerbool FileManager::getStatValue(const char *Path, struct stat &StatBuf, 563e5d30e3b403539b10aaa52f03875a2243bf88904Argyrios Kyrtzidis bool isFile, int *FileDescriptor) { 56410e286aa8d39fb51a21412850265d9dae74613eeChris Lattner // FIXME: FileSystemOpts shouldn't be passed in here, all paths should be 56510e286aa8d39fb51a21412850265d9dae74613eeChris Lattner // absolute! 56611aa4b03b054cb9d3c201bba5632241145865e29Chris Lattner if (FileSystemOpts.WorkingDir.empty()) 567e5d30e3b403539b10aaa52f03875a2243bf88904Argyrios Kyrtzidis return FileSystemStatCache::get(Path, StatBuf, isFile, FileDescriptor, 568898a061f69e1145bf89a987c08203132b9922a3cChris Lattner StatCache.get()); 5699b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan 570f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<128> FilePath(Path); 57103fd362dbf6fcd077df566fe2ac3165be668323bAnders Carlsson FixupRelativePath(FilePath); 57211aa4b03b054cb9d3c201bba5632241145865e29Chris Lattner 573e5d30e3b403539b10aaa52f03875a2243bf88904Argyrios Kyrtzidis return FileSystemStatCache::get(FilePath.c_str(), StatBuf, 574e5d30e3b403539b10aaa52f03875a2243bf88904Argyrios Kyrtzidis isFile, FileDescriptor, StatCache.get()); 575389db16c63eec6ecfa9b235155252d8da766e94eArgyrios Kyrtzidis} 576389db16c63eec6ecfa9b235155252d8da766e94eArgyrios Kyrtzidis 5775f9e272e632e951b1efe824cd16acb4d96077930Chris Lattnerbool FileManager::getNoncachedStatValue(StringRef Path, 5787dbafb3ade491a41100c97597209455ee10c537dAnders Carlsson struct stat &StatBuf) { 579f7ccbad5d9949e7ddd1cbef43d482553b811e026Dylan Noblesmith SmallString<128> FilePath(Path); 5807dbafb3ade491a41100c97597209455ee10c537dAnders Carlsson FixupRelativePath(FilePath); 5817dbafb3ade491a41100c97597209455ee10c537dAnders Carlsson 5827dbafb3ade491a41100c97597209455ee10c537dAnders Carlsson return ::stat(FilePath.c_str(), &StatBuf) != 0; 5837dbafb3ade491a41100c97597209455ee10c537dAnders Carlsson} 5847dbafb3ade491a41100c97597209455ee10c537dAnders Carlsson 5855ba0559f2f0ddd62de16547af514dbaf93b79585Axel Naumannvoid FileManager::invalidateCache(const FileEntry *Entry) { 5865ba0559f2f0ddd62de16547af514dbaf93b79585Axel Naumann assert(Entry && "Cannot invalidate a NULL FileEntry"); 5873ce42c37b0ef6b10538f5040a33d19a6e6988d05Axel Naumann 5883ce42c37b0ef6b10538f5040a33d19a6e6988d05Axel Naumann SeenFileEntries.erase(Entry->getName()); 5895ba0559f2f0ddd62de16547af514dbaf93b79585Axel Naumann 5905ba0559f2f0ddd62de16547af514dbaf93b79585Axel Naumann // FileEntry invalidation should not block future optimizations in the file 5915ba0559f2f0ddd62de16547af514dbaf93b79585Axel Naumann // caches. Possible alternatives are cache truncation (invalidate last N) or 5925ba0559f2f0ddd62de16547af514dbaf93b79585Axel Naumann // invalidation of the whole cache. 5935ba0559f2f0ddd62de16547af514dbaf93b79585Axel Naumann UniqueRealFiles.erase(Entry); 5943ce42c37b0ef6b10538f5040a33d19a6e6988d05Axel Naumann} 5953ce42c37b0ef6b10538f5040a33d19a6e6988d05Axel Naumann 5963ce42c37b0ef6b10538f5040a33d19a6e6988d05Axel Naumann 597cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregorvoid FileManager::GetUniqueIDMapping( 5985f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVectorImpl<const FileEntry *> &UIDToFiles) const { 599cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregor UIDToFiles.clear(); 600cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregor UIDToFiles.resize(NextFileUID); 601cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregor 602cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregor // Map file entries 603cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregor for (llvm::StringMap<FileEntry*, llvm::BumpPtrAllocator>::const_iterator 6049b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan FE = SeenFileEntries.begin(), FEEnd = SeenFileEntries.end(); 605cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregor FE != FEEnd; ++FE) 606cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregor if (FE->getValue() && FE->getValue() != NON_EXISTENT_FILE) 607cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregor UIDToFiles[FE->getValue()->getUID()] = FE->getValue(); 608cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregor 609cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregor // Map virtual file entries 6105f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVector<FileEntry*, 4>::const_iterator 611cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregor VFE = VirtualFileEntries.begin(), VFEEnd = VirtualFileEntries.end(); 612cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregor VFE != VFEEnd; ++VFE) 613cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregor if (*VFE && *VFE != NON_EXISTENT_FILE) 614cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregor UIDToFiles[(*VFE)->getUID()] = *VFE; 615cfbf1c7536e016dc275139dd842d4a5f059a749fDouglas Gregor} 61610e286aa8d39fb51a21412850265d9dae74613eeChris Lattner 617d54dff026b02303a35147224de72bb44cbb53c79Argyrios Kyrtzidisvoid FileManager::modifyFileEntry(FileEntry *File, 618d54dff026b02303a35147224de72bb44cbb53c79Argyrios Kyrtzidis off_t Size, time_t ModificationTime) { 619d54dff026b02303a35147224de72bb44cbb53c79Argyrios Kyrtzidis File->Size = Size; 620d54dff026b02303a35147224de72bb44cbb53c79Argyrios Kyrtzidis File->ModTime = ModificationTime; 621d54dff026b02303a35147224de72bb44cbb53c79Argyrios Kyrtzidis} 622d54dff026b02303a35147224de72bb44cbb53c79Argyrios Kyrtzidis 62310e286aa8d39fb51a21412850265d9dae74613eeChris Lattner 6245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencervoid FileManager::PrintStats() const { 6256cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << "\n*** File Manager Stats:\n"; 6269b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan llvm::errs() << UniqueRealFiles.size() << " real files found, " 6279b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan << UniqueRealDirs.size() << " real dirs found.\n"; 6289b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan llvm::errs() << VirtualFileEntries.size() << " virtual files found, " 6299b555ea217565ac0f8bf7255b29496916cb03476Zhanyong Wan << VirtualDirectoryEntries.size() << " virtual dirs found.\n"; 6306cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << NumDirLookups << " dir lookups, " 6316cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer << NumDirCacheMisses << " dir cache misses.\n"; 6326cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer llvm::errs() << NumFileLookups << " file lookups, " 6336cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer << NumFileCacheMisses << " file cache misses.\n"; 6341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6356cb7c1a43b0c8f739d1f54b7fdae5ede86033496Benjamin Kramer //llvm::errs() << PagesMapped << BytesOfPagesMapped << FSLookups; 6365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 637