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path: root/lib/Support/MemoryBuffer.cpp
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2009-11-10Fix MemoryBuffer::getSTDIN to *not* return null if stdin is empty, this is a ↵Daniel Dunbar
lame API. Also, Stringrefify some more MemoryBuffer functions, and add two performance FIXMEs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86630 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-04A value is only assigned to errno if NumRead equals -1, so doDuncan Sands
not reason based on errno if NumRead has a different value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86046 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-03Make this code more robust by not thinking we are making progressDuncan Sands
if zero bytes were read. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85922 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-18Tweak MemoryBuffer::getSTDIN so that it returns after the first EOF. Eli Friedman
It doesn't matter for piped input, but it's annoying when typing at the console. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71998 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-13Switch from new[] + delete[] to malloc + free since llvm does not catch C++ ↵Evan Cheng
exceptions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64448 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-13If new[] fails, return 0 rather then trying to dereference a null pointer.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64444 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-05Fix more -Wshorten-64-to-32 warnings.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50659 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-30fcntl.h is pretty standard on unix (without the sys/)Gabor Greif
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50475 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-01Fix compilation errors on MSVC. Patch by Argiris Kirtzidis!Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49055 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-01Change the MemoryBuffer::getFile* methods to take just a pointer to theChris Lattner
start of a filename, not a filename+length. All clients can produce a null terminated name, and the system api's require null terminated strings anyway. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49041 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-01Reimplement MemoryBuffer::getFile with three enhancements:Chris Lattner
1) stop using MappedFile. 2) if profitable use the sys::path::MapInFilePages api to read the file. 3) otherwise fallback to read. When sys::path::MapInFilePages is implemented, this provides several benefits: #1: this avoids fragmenting memory for small files. #2: this avoids extraneous stat calls when the file size is known. #3: this only keeps the file descriptor open while reading the file, not for the duration of the lifetime of the memory buffer. This fixes a serious clang FD 'leak' problem. I believe that this will work on a win32 machine, but I don't have one to test on. I'd appreciate it if someone could check. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49031 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-01Remove the MappedFile::charBase member, rename base -> getBase() andChris Lattner
make getBase() return a const-correct pointer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49025 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-01Remove MappedFile support for mapping files for write and execChris Lattner
and shared. This complicates the design, is not used, and probably doesn't even work. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49022 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29Remove attribution from file headers, per discussion on llvmdev.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-18Fix the Linker testcase regressions, by making MemoryBuffer::getFileOrSTDIN ↵Chris Lattner
return a valid but empty buffer if stdin is empty. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44219 91177308-0d34-0410-b5e6-96231b3b80d8
2007-10-09Add new MemoryBuffer::getMemBufferCopy method.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42815 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-08Make getSTDIN return null if the standard input is empty, as the header fileReid Spencer
documentation implies and as its uses depend. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40939 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-01Fix undefined behaviour reported by the new --enable-expensive-checks option.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37829 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-11fix a memory leakChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36981 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-07Unbreak VC++ build.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36901 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-06Enhance MemoryBuffer to return error messages in strings if they occur.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36899 91177308-0d34-0410-b5e6-96231b3b80d8
2007-05-06Fix MemoryBuffer::getFile to return null if it has an error opening theChris Lattner
file instead of aborting. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36858 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-29Fix MemoryBuffer breakage correctly.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36561 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-29Unbreak build.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36559 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-29Add a new memorybuffer class, to unify all the file reading code in the systemChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36553 91177308-0d34-0410-b5e6-96231b3b80d8
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