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path: root/lib/Support/MemoryBuffer.cpp
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2013-03-30Put private class into an anonmyous namespace.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178420 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14[Support] Fix lifetime of file descriptors when using MemoryBuffer.Michael J. Spencer
Clients of MemoryBuffer::getOpenFile expect it not to take ownership of the file descriptor passed in. So don't. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176995 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12[Support][MemoryBuffer] Use sys::fs::mapped_file_region instead of ↵Michael J. Spencer
sys::Path::MapInFilePages. This gives us memory mapped file I/O on Windows. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176886 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-01In llvm::MemoryBuffer::getFile() remove an unnecessary stat call check.Argyrios Kyrtzidis
The sys::fs::is_directory() check is unnecessary because, if the filename is a directory, the function will fail anyway with the same error code returned. Remove the check to avoid an unnecessary stat call. Someone needs to review on windows and see if the check is necessary there or not. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176386 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-19Update a portability kludge to keep it in sync with changes in the codeDan Gohman
which uses it. This is not ideal, but it ought to at least restore the behavior to what it was before. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175571 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-19Whitelist files and block devices instead of blacklisting fifos andDan Gohman
character devices. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175549 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-19Don't trust st_size of a character device. This fixes usingDan Gohman
/dev/stdin as an input when stdin is connected to a tty, for example. No test, because it's difficult to write a reasonably portable test for this. /dev/stdin isn't a character device when stdin is redirected from a file or connected to a pipe. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175542 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-31Go ahead and get rid of the old page size interface and convert all theChandler Carruth
users over to the new one. No sense maintaining this "compatibility" layer it seems. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171331 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-03Use the new script to sort the includes of every file under lib.Chandler Carruth
Sooooo many of these had incorrect or strange main module includes. I have manually inspected all of these, and fixed the main module include to be the nearest plausible thing I could find. If you own or care about any of these source files, I encourage you to take some time and check that these edits were sensible. I can't have broken anything (I strictly added headers, and reordered them, never removed), but they may not be the headers you'd really like to identify as containing the API being implemented. Many forward declarations and missing includes were added to a header files to allow them to parse cleanly when included first. The main module rule does in fact have its merits. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169131 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-06MemoryBuffer: Windows doesn't define S_IFIFO.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167467 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-05MemoryBuffer: Support reading named pipes in getFile().Daniel Dunbar
- We only support this when the client didn't claim to know the file size. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167407 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-23Add LLVM_OVERRIDE to methods that override their base classes.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164471 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-11In MemoryBuffer::getOpenFile() don't verify that the mmap'edArgyrios Kyrtzidis
file buffer is null-terminated. If the file is smaller than we thought, mmap will not allow dereferencing past the pages that are enough to cover the actual file size, even though we asked for a larger address range. rdar://11612916 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160075 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Remove an "else" that snuck in after a "return" ;)Kaelyn Uhrain
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158844 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Check that a file is not a directory before reading it into a MemoryBuffer.Kaelyn Uhrain
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158841 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-05In MemoryBuffer::getOpenFile() make sure that the buffer is null-terminated ifArgyrios Kyrtzidis
the caller requested a null-terminated one. When mapping the file there could be a racing issue that resulted in the file being larger than the FileSize passed by the caller. We already have an assertion for this in MemoryBuffer::init() but have a runtime guarantee that the buffer will be null-terminated, so do a copy that adds a null-terminator. Protects against crash of rdar://11161822. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154082 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-13Add a sanity check in MemoryBuffer::getOpenFile() to make sure we don't hangArgyrios Kyrtzidis
if the passed in FileSize is inaccurate. rdar://11034179 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152662 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-09Change default error_code ctor to a 'named ctor' so it's more self-documenting.David Blaikie
Unify default construction of error_code uses on this idiom so that users don't feel compelled to make static globals for naming convenience. (unfortunately I couldn't make the original ctor private as some APIs don't return their result, instead using an out parameter (that makes sense to default construct) - which is a bit of a pity. I did, however, find/fix some cases of unnecessary default construction of error_code before I hit the unfixable cases) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150197 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-22Add configure checking for pread(2) and use it to save a syscall when ↵Benjamin Kramer
reading files. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145061 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-22Turn error recovery into an assert.Benjamin Kramer
This was put in because in a certain version of DragonFlyBSD stat(2) lied about the size of some files. This was fixed a long time ago so we can remove the workaround. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145059 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-20Remove unused include of sys/uio.h in MemoryBuffer.cpp. It was not correctly ↵David Meyer
protected by ifdef either. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142623 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-15use 64-bit types instead of off_t/size_t to avoid the issue whenIvan Krasin
gold plugin is built with Large File Support (sizeof(off_t) == 64 on i686) and the rest of LLVM is built w/o Large File Support (sizeof(off_t) == 32 on i686) which corrupts the stack. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139873 91177308-0d34-0410-b5e6-96231b3b80d8
2011-05-22random comment cleanups.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131829 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-28Add MemoryBuffer::getBufferKind() to report whether a memory buffer uses ↵Ted Kremenek
malloc'ed or mmap'ed memory. This is for performance analysis. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130432 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-22We don't need a null terminator for the output file.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128098 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-18Check RequiresNullTerminator first, or we might read from an invalid address.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127853 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-17Use RequiresNullTerminator to create buffers without a null terminatorRafael Espindola
instead of copying. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127835 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-10Don't compute the file size if we don't need to.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127426 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-10Add r127409 back now that the windows file was updated.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127417 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-10Revert r127409 which broke all the Windows bots.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127413 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-10Add support for MemoryBuffers that are not null terminated and addRafael Espindola
support for creating buffers that cover only a part of a file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127409 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-08Don't open the file again in the gold plugin. To be able to do this, updateRafael Espindola
MemoryBuffer::getOpenFile to not close the file descriptor. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125128 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-19Add missing standard headers. Patch by Joerg Sonnenberger!Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122193 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-16MemoryBuffer now return an error_code and returns a OwningPtr<MemoryBuffer> ↵Michael J. Spencer
via an out parm. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121958 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-09Support/MemoryBuffer: Replace all uses of std::string *ErrMsg with ↵Michael J. Spencer
error_code &ec. And fix clients. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121379 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-29Merge System into Support.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120298 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-23add a MemoryBuffer::getOpenFile method, which turns an openChris Lattner
file descriptor into a MemoryBuffer (and closes the FD). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120065 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-23Revert functionality doug added in r98575 that was neverChris Lattner
documented and only used by some clang stuff I just removed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120002 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-25Rewrite MemoryBuffer::getSTDIN to use read(2) and a SmallVector buffer.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106856 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-25Bring back the empty vector workaround I removed in r106839. Looks like MSVC ↵Benjamin Kramer
needs it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106841 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-25Tweak MemoryBuffer to allocate the class itself, the name and possibly theBenjamin Kramer
buffer in the same chunk of memory. 2 less mallocs for every uninitialized MemoryBuffer and 1 less malloc for every MemoryBuffer pointing to a memory range translate into 20% less mallocs on clang -cc1 -Eonly Cocoa_h.m. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106839 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-24Add overloads for getFile and getFileOrSTDIN which take a const char *Dan Gohman
instead of a StringRef, avoiding the need to copy the string in the common case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106754 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-22Add an explicit keyword.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106538 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-27Add basic error checking to MemoryBuffer::getSTDIN.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104855 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-05stringref-ize the MemoryBuffer::get apis. This requiresChris Lattner
a co-committed clang patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100485 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-01Remove accidental include and add a comment.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100107 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-01Various improvements to MemoryBuffer::getFile:Benjamin Kramer
- Use a RAII object to close the FD. - Use sys::StrError instead of thread-unsafe strerror calls. - Recover gracefully if read returns zero. This works around an issue on DragonFlyBSD where /dev/null has an st_size of 136 but we can't read 136 bytes from it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100106 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-15Extend MemoryBuffer::getFile() to take an optional "stat" structureDouglas Gregor
pointer. If given, the structure will be set with the stat information from the file actually read. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98575 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-26Replace a temporary std::string with SmallString.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97259 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-23sizeof(char) is always 1.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92079 91177308-0d34-0410-b5e6-96231b3b80d8
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