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path: root/lib/Support/MemoryBuffer.cpp
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* MemoryBuffer: Windows doesn't define S_IFIFO.Daniel Dunbar2012-11-06
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167467 91177308-0d34-0410-b5e6-96231b3b80d8
* MemoryBuffer: Support reading named pipes in getFile().Daniel Dunbar2012-11-05
| | | | | | - 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
* Add LLVM_OVERRIDE to methods that override their base classes.Craig Topper2012-09-23
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164471 91177308-0d34-0410-b5e6-96231b3b80d8
* In MemoryBuffer::getOpenFile() don't verify that the mmap'edArgyrios Kyrtzidis2012-07-11
| | | | | | | | | | | | 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
* Remove an "else" that snuck in after a "return" ;)Kaelyn Uhrain2012-06-20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158844 91177308-0d34-0410-b5e6-96231b3b80d8
* Check that a file is not a directory before reading it into a MemoryBuffer.Kaelyn Uhrain2012-06-20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158841 91177308-0d34-0410-b5e6-96231b3b80d8
* In MemoryBuffer::getOpenFile() make sure that the buffer is null-terminated ifArgyrios Kyrtzidis2012-04-05
| | | | | | | | | | | | | 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
* Add a sanity check in MemoryBuffer::getOpenFile() to make sure we don't hangArgyrios Kyrtzidis2012-03-13
| | | | | | | | 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
* Change default error_code ctor to a 'named ctor' so it's more self-documenting.David Blaikie2012-02-09
| | | | | | | | | | | 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
* Add configure checking for pread(2) and use it to save a syscall when ↵Benjamin Kramer2011-11-22
| | | | | | reading files. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145061 91177308-0d34-0410-b5e6-96231b3b80d8
* Turn error recovery into an assert.Benjamin Kramer2011-11-22
| | | | | | | 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
* Remove unused include of sys/uio.h in MemoryBuffer.cpp. It was not correctly ↵David Meyer2011-10-20
| | | | | | protected by ifdef either. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142623 91177308-0d34-0410-b5e6-96231b3b80d8
* use 64-bit types instead of off_t/size_t to avoid the issue whenIvan Krasin2011-09-15
| | | | | | | | | | 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
* random comment cleanups.Chris Lattner2011-05-22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131829 91177308-0d34-0410-b5e6-96231b3b80d8
* Add MemoryBuffer::getBufferKind() to report whether a memory buffer uses ↵Ted Kremenek2011-04-28
| | | | | | 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
* We don't need a null terminator for the output file.Rafael Espindola2011-03-22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128098 91177308-0d34-0410-b5e6-96231b3b80d8
* Check RequiresNullTerminator first, or we might read from an invalid address.Rafael Espindola2011-03-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127853 91177308-0d34-0410-b5e6-96231b3b80d8
* Use RequiresNullTerminator to create buffers without a null terminatorRafael Espindola2011-03-17
| | | | | | instead of copying. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127835 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't compute the file size if we don't need to.Rafael Espindola2011-03-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127426 91177308-0d34-0410-b5e6-96231b3b80d8
* Add r127409 back now that the windows file was updated.Rafael Espindola2011-03-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127417 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r127409 which broke all the Windows bots.Jakob Stoklund Olesen2011-03-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127413 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support for MemoryBuffers that are not null terminated and addRafael Espindola2011-03-10
| | | | | | 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
* Don't open the file again in the gold plugin. To be able to do this, updateRafael Espindola2011-02-08
| | | | | | 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
* Add missing standard headers. Patch by Joerg Sonnenberger!Nick Lewycky2010-12-19
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122193 91177308-0d34-0410-b5e6-96231b3b80d8
* MemoryBuffer now return an error_code and returns a OwningPtr<MemoryBuffer> ↵Michael J. Spencer2010-12-16
| | | | | | via an out parm. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121958 91177308-0d34-0410-b5e6-96231b3b80d8
* Support/MemoryBuffer: Replace all uses of std::string *ErrMsg with ↵Michael J. Spencer2010-12-09
| | | | | | error_code &ec. And fix clients. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121379 91177308-0d34-0410-b5e6-96231b3b80d8
* Merge System into Support.Michael J. Spencer2010-11-29
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120298 91177308-0d34-0410-b5e6-96231b3b80d8
* add a MemoryBuffer::getOpenFile method, which turns an openChris Lattner2010-11-23
| | | | | | | 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
* Revert functionality doug added in r98575 that was neverChris Lattner2010-11-23
| | | | | | | 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
* Rewrite MemoryBuffer::getSTDIN to use read(2) and a SmallVector buffer.Benjamin Kramer2010-06-25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106856 91177308-0d34-0410-b5e6-96231b3b80d8
* Bring back the empty vector workaround I removed in r106839. Looks like MSVC ↵Benjamin Kramer2010-06-25
| | | | | | needs it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106841 91177308-0d34-0410-b5e6-96231b3b80d8
* Tweak MemoryBuffer to allocate the class itself, the name and possibly theBenjamin Kramer2010-06-25
| | | | | | | | | | | 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
* Add overloads for getFile and getFileOrSTDIN which take a const char *Dan Gohman2010-06-24
| | | | | | | | 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
* Add an explicit keyword.Dan Gohman2010-06-22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106538 91177308-0d34-0410-b5e6-96231b3b80d8
* Add basic error checking to MemoryBuffer::getSTDIN.Dan Gohman2010-05-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104855 91177308-0d34-0410-b5e6-96231b3b80d8
* stringref-ize the MemoryBuffer::get apis. This requiresChris Lattner2010-04-05
| | | | | | | a co-committed clang patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100485 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove accidental include and add a comment.Benjamin Kramer2010-04-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100107 91177308-0d34-0410-b5e6-96231b3b80d8
* Various improvements to MemoryBuffer::getFile:Benjamin Kramer2010-04-01
| | | | | | | | | | | | - 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
* Extend MemoryBuffer::getFile() to take an optional "stat" structureDouglas Gregor2010-03-15
| | | | | | | | 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
* Replace a temporary std::string with SmallString.Benjamin Kramer2010-02-26
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97259 91177308-0d34-0410-b5e6-96231b3b80d8
* sizeof(char) is always 1.Chris Lattner2009-12-23
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92079 91177308-0d34-0410-b5e6-96231b3b80d8
* return more useful error messages by using strerror to format errnoChris Lattner2009-12-01
| | | | | | | instead of returning an ambiguous reason. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90275 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix MemoryBuffer::getSTDIN to *not* return null if stdin is empty, this is a ↵Daniel Dunbar2009-11-10
| | | | | | | | 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
* A value is only assigned to errno if NumRead equals -1, so doDuncan Sands2009-11-04
| | | | | | | 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
* Make this code more robust by not thinking we are making progressDuncan Sands2009-11-03
| | | | | | | if zero bytes were read. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85922 91177308-0d34-0410-b5e6-96231b3b80d8
* Tweak MemoryBuffer::getSTDIN so that it returns after the first EOF. Eli Friedman2009-05-18
| | | | | | | | | 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
* Switch from new[] + delete[] to malloc + free since llvm does not catch C++ ↵Evan Cheng2009-02-13
| | | | | | exceptions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64448 91177308-0d34-0410-b5e6-96231b3b80d8
* If new[] fails, return 0 rather then trying to dereference a null pointer.Evan Cheng2009-02-13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64444 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix more -Wshorten-64-to-32 warnings.Evan Cheng2008-05-05
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50659 91177308-0d34-0410-b5e6-96231b3b80d8
* fcntl.h is pretty standard on unix (without the sys/)Gabor Greif2008-04-30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50475 91177308-0d34-0410-b5e6-96231b3b80d8
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