aboutsummaryrefslogtreecommitdiff
path: root/lib/Basic/FileManager.cpp
AgeCommit message (Collapse)Author
2010-11-23factor the "cache miss" handling code out of FM into a static Chris Lattner
method in FileSystemStatCache. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120037 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-23r120013 dropped passing in the precomputed file size to Chris Lattner
MemoryBuffer::getFile, causing us to pick up a fstat for every file. Restore the optimization. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120032 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-23rework the stat cache, pulling it out of FileManager.h intoChris Lattner
its own header and giving it some more structure. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120030 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-23tidy up. Split FileManager::getBufferForFile intoChris Lattner
two copies, since they are fundamentally different operations and the StringRef one should go away (it shouldn't be part of FileManager at least). Remove some dead arguments. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120013 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-23now the FileManager has a FileSystemOpts ivar, stop threadingChris Lattner
FileSystemOpts through a ton of apis, simplifying a lot of code. This also fixes a latent bug in ASTUnit where it would invoke methods on FileManager without creating one in some code paths in cindextext. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120010 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-23give FileManager a 'FileSystemOptions' ivar, which will be usedChris Lattner
to simplify a bunch of code in it. It should ultimately get inlined into FileManager. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120007 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-23Partially revert Doug's PCH validation patch (r98585).Chris Lattner
This patch completely defeated the "passing in a prestat'd size to MemoryBuffer" optimization, leading to an extra fstat call for every buffer opened, in order to find out if the datestamp and size of the file on disk matches what is in the stat cache. I fully admit that I don't completely understand what is going on here: why punish code when a stat cache isn't in use? what is the point of a stat cache if you have to turn around and stat stuff to validate it? To resolve both these issues, just drop the modtime check and check the file size, which is the important thing anyway. This should also resolve PR6812, because presumably windows is stable when it comes to file sizes. If the modtime is actually important, we should get it and keep it on the first stat. This eliminates 833 fstat syscalls when processing Cocoa.h, speeding up system time on -Eonly Cocoa.h from 0.041 to 0.038s. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120001 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-23stringref'ize APIChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119997 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-23avoid creating sys::Path instances when -fworking-directory isn't being used.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119995 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-21Filename.rfind("/\\") won't give us the position of the last directory ↵Benjamin Kramer
seperator. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119939 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-21change the various getFile routines to use StringRef as their implementation ↵Chris Lattner
form. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119934 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-03Implement -working-directory.Argyrios Kyrtzidis
When -working-directory is passed in command line, file paths are resolved relative to the specified directory. This helps both when using libclang (where we can't require the user to actually change the working directory) and to help reproduce test cases when the reproduction work comes along. --FileSystemOptions is introduced which controls how file system operations are performed (currently it just contains the working directory value if set). --FileSystemOptions are passed around to various interfaces that perform file operations. --Opening & reading the content of files should be done only through FileManager. This is useful in general since file operations will be abstracted in the future for the reproduction mechanism. FileSystemOptions is independent of FileManager so that we can have multiple translation units sharing the same FileManager but with different FileSystemOptions. Addresses rdar://8583824. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@118203 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-23fix PR7953 - Windows filename are case insensitive:Chris Lattner
#pragma once wasn't working on win32 if the header file was included using a different case. I tracked down the problem to the fact that clang::FileManager was caching files using case sensitive string (UniqueFiles) on Windows. I changed FileManager to cache filename in lower case only. Doesn't affect UNIX because UNIX uses Inode to uniquely identify files. unix doesn't use this codepath. Analysis and patch by Francois Pichet! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111866 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-26When remapping a virtual file, also make an entry for the file withDouglas Gregor
its absolute path on disk. Also, introduce a fun test for the precompiled preamble, which almost works... git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109470 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-14Pass StringRefs by value.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108375 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-18Removing trailing directory separator, to make stat workJohn Thompson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91684 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11FileManager: Do not cache failed stats, it is easy to construct commonDaniel Dunbar
inconsistent situations if we do, and they are not important for PCH performance (which currently only needs the stats to construct the initial FileManager entries). - No test case, sorry, the machinations are too involved. This occurs when, for example, the build makes a PCH file and has a header map or a -I for a directory that does not yet exist. It is possible we will cache the negative stat on that directory, and then in the build we will never find header files inside that dir. For PCH we don't need these stats anyway for performance, so this also makes PCH files smaller w/ no loss. I hope to eventually eliminate the stat cache entirely. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91082 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02Extend -remap-file=from;to to permit mapping from a non-existentDouglas Gregor
file. This is accomplished by introducing the notion of a "virtual" file into the file manager, which provides a FileEntry* for a named file whose size and modification time are known but which may not exist on disk. Added a cute little test that remaps both a .c file and a .h file it includes to alternative files. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90329 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-16Add support for a chain of stat caches in the FileManager, rather thanDouglas Gregor
only supporting a single stat cache. The immediate benefit of this change is that we can now generate a PCH/AST file when including another PCH file; in the future, the chain of stat caches will likely be useful with multiple levels of PCH files. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84263 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-18don't stick an uninitialized 'stat' buf into the stat cache, fill itChris Lattner
with zeros. This avoids a GCC warning (PR5000) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82194 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-09Remove tabs, and whitespace cleanups.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81346 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-05Replace some instances of std::string with StringRefs.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81079 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23API changes to match llvm ToT.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79868 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23Replace cerr with errs().Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79854 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12improve path handling, patch by Baptiste Lepilleur!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@78824 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27Implement caching of stat() calls for precompiled headers, which isDouglas Gregor
essentially the same thing we do with pretokenized headers. stat() caching improves performance of the Cocoa-prefixed "Hello, World" by 45%. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70223 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-22Remove the serialization code that predates precompiledDouglas Gregor
headers. Future approaches to (de-)serializing ASTs will be based on the PCH infrastructure. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69828 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12FileManager:Ted Kremenek
- set the 'StatSysCallCache' object using a setter method instead of FileManager's constructor. This allows the cache to be installed after the FileManager object is created. - Add 'file mode' to FileEntry (useful for stat caching) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64351 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12search and replaceo? Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64348 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12Add lightweight shim "clang::StatSysCallCache" that caches 'stat' system callsTed Kremenek
for use by FileManager. FileManager now takes a StatSysCallCache* in its constructor (which defaults to NULL). This will be used for evaluating whether or not caching 'stat' system calls in PTH is a performance win. This shim adds no observable performance impact in the case where the 'StatSysCallCache*' is null. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64345 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-28On Windows use a BumpPtrAllocator for the UniqueFileContainer's StringMap.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63162 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-28FileManager: Use a BumpPtrAllocator for the StringMaps DirEntries and ↵Ted Kremenek
FileEntries. Performance impact (clang -fsyntax-only INPUTS/Cocoa_h.m): non-PTH: 0.4% improvement PTH: 0.8% improvement git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63159 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-28Add a some comments to designate Windows-specific/Unix-specific code. No ↵Ted Kremenek
functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63157 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-15Make a major restructuring of the clang tree: introduce a top-levelChris Lattner
lib dir and move all the libraries into it. This follows the main llvm tree, and allows the libraries to be built in parallel. The top level now enforces that all the libs are built before Driver, but we don't care what order the libs are built in. This speeds up parallel builds, particularly incremental ones. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@48402 91177308-0d34-0410-b5e6-96231b3b80d8
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-05-03 07:42:42 +0000