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2012-10-17Support: Don't remove special files on signals.Daniel Dunbar
- Similar to Path::eraseFromDisk(), we don't want LLVM to remove things like /dev/null, even if it has the permission. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166105 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-28Make backtraces work again with both the configure and cmake build.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164817 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26The assumption that /proc/self/exe always exists is incorrect.Sylvestre Ledru
For example, under a Linux chroot, /proc/ might not be mounted. Therefor, we test if this file exist. If it is the case, use it (the current behavior). Otherwise, we fall back to the detection used by *BSD. The issue has been reported initially on the Debian bug tracker: http://bugs.debian.org/674588 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164676 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21Add an --enable-backtraces option to configure to determineEric Christopher
whether or not we want to print out backtrace information. Useful for libraries that don't need backtrace information on a crash. rdar://11844710 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164426 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-19This patch adds memory support functions which will later be used to ↵Andrew Kaylor
implement section-specific protection handling in MCJIT. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164249 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-11Add support for finding cacheflush on OpenBSD/mips64 platforms.Chandler Carruth
Patch by Brad Smith! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163584 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-06Whitespace.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163289 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-06Unix/Signals.inc: Fix a typo. Thanks to Dani Berg!NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163288 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-15Properly test the LLVM_USE_RVALUE_REFERENCES macro.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161978 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-15[PathV2] Add mapped_file_region. Implementation for Windows and POSIX.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161976 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-10stdcxx's cstdio doesn't include stdio.h, but the code using PathV2.incJoerg Sonnenberger
includes both. Deal with feof and ferror potentially being macros. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161658 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-06Add support for the OpenBSD for Bitrig.Eric Christopher
Patch by David Hill. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161344 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-20Process: Add sys::Process::FileDescriptorHasColors().Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160557 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-12Fixed few warnings.Galina Kistanova
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160142 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Add permissions(), map_file_pages(), and unmap_file_pages() to llvm::sys::fs ↵Nick Kledzik
and add unit test. Unix is implemented. Windows side needs to be implemented. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158770 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-16Don't call 'FilesToRemove[0]' when the vector is empty, even to computeChandler Carruth
the address of it. Found by a checking STL implementation used on a dragonegg builder. Sorry about this one. =/ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158582 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-16Harden the Unix signals code to be more async signal safe.Chandler Carruth
This is likely only the tip of the ice berg, but this particular bug caused any double-free on a glibc system to turn into a deadlock! It is not generally safe to either allocate or release heap memory from within the signal handler. The 'pop_back()' in RemoveFilesToRemove was deleting memory and causing the deadlock. What's worse, eraseFromDisk in PathV1 has lots of allocation and deallocation paths. We even passed 'true' in a place that would have caused the *signal handler* to try to run the 'system' system call and shell out to 'rm -rf'. That was never going to work... This patch switches the file removal to use a vector of strings so that the exact text needed for the 'unlink' system call can be stored there. It switches the loop to be a boring indexed loop, and directly calls unlink without looking at the error. It also works quite hard to ensure that calling 'c_str()' is safe, by ensuring that the non-signal-handling code path that manipulates the vector always leaves it in a state where every element has already had 'c_str()' called at least once. I dunno exactly how overkill this is, but it fixes the deadlock-on-double free issue, and seems likely to prevent any other issues from sneaking up. Sorry for not having a test case, but I *really* don't know how to test signal handling code easily.... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158580 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-02Use access(2) instead of stat(2) to check if a file exists.Benjamin Kramer
Apart from being slightly cheaper, this fixes a real bug that hits 32 bit linux systems. When passing a file larger than 2G to be linked (which isn't that uncommon with large projects such as WebKit), clang's driver checks if the file exists but the file size doesn't fit in an off_t and stat(2) fails with EOVERFLOW. Clang then says that the file doesn't exist instead of passing it to the linker. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157891 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-11Allow unique_file to take a mode for file permissions, but defaultEric Christopher
to user only read/write. Part of rdar://11325849 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156591 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-08[Support] Fix sys::GetRandomNumber() to always use a high quality seed.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156414 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-06Unix/Process.inc: Give more useful random seed to srand. Workaround for PR12743.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156252 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-06Support/Process: Move llvm::sys::Process::GetRandomNumber() from Process.cpp ↵NAKAMURA Takumi
to Unix/Process.inc. FIXME: GetRandomNumber() is not implemented in Win32. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156251 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-05[Support] Fix up comments.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156239 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-05[Support] Rewrite sys::fs::unique_file to not be stupid with /dev/urandom.Daniel Dunbar
- Just use sys::Process::GetRandomNumber instead of having two poor implementations. - This is ~70 times (!) faster on my OS X machine. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156238 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-23[Support/Unix] Unconditionally include time.h.Michael J. Spencer
When building LLVM on Linux with libc++ with CMake TIME_WITH_SYS_TIME is undefined, and HAVE_SYS_TIME_H is defined. This ends up including sys/time.h but not time.h. Unix/TimeValue.inc requires time.h for asctime_r and localtime. libstdc++ seems to include time.h anyway, but libc++ does not. Fix this by always including time.h git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155382 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-23Conflict with st_dev/st_ino identifiers under Debian GNU/HurdSylvestre Ledru
The problem is that the struct file_status on UNIX systems has two members called st_dev and st_ino; those are also members of the struct stat, and they are reserved identifiers which can also be provided as #define (and this is the case for st_dev on Hurd). The solution (attached) is to rename them, for example adding a "fs_" prefix (= file status) to them. Patch by Pino Toscano git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155354 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-16Reapply 'Add reverseColor to raw_ostream'.Benjamin Kramer
To be used in printing unprintable source in clang diagnostics. Patch by Seth Cantrell, with a minor fix for mingw by me. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154805 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-16Revert r154800 which breaks windows builders.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154802 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-16Add reverseColor to raw_ostream.Argyrios Kyrtzidis
To be used in printing unprintable source in clang diagnostics. Patch by Seth Cantrell! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154800 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-11Fix the build under Debian GNU/Hurd.Sylvestre Ledru
Thanks to Pino Toscano for the patch git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154500 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-26Fix GetMainExecutable on kFreeBSD.Anton Korobeynikov
Patch by Sylvestre Ledru! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153435 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-24Fix null to integer conversion warnings.Jean-Daniel Dupas
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153395 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
2012-01-15Remove SetWorkingDirectory from the Process interface. Nothing in LLVMChandler Carruth
or Clang is using this, and it would be hard to use it correctly given the thread hostility of the function. Also, it never checked the return which is rather dangerous with chdir. If someone was in fact using this, please let me know, as well as what the usecase actually is so that I can add it back and make it more correct and secure to use. (That said, it's never going to be "safe" per-se, but we could at least document the risks...) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148211 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Disable the crash reporter when running lit tests.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147965 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-05revert r147542 after comments from Joerg SonnenbergerSebastian Pop
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147608 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-04use getHostTriple instead of getDefaultTargetTriple in getClosestTargetForJITSebastian Pop
Get back getHostTriple. For JIT compilation, use the host triple instead of the default target: this fixes some JIT testcases that used to fail when the compiler has been configured as a cross compiler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147542 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-13Support/Program: Make Change<stream>ToBinary return error_code.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146522 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-12Revert r146363 to allow buildbots to make forward progress.Chad Rosier
Original commit message: Support/FileSystem: Implement canonicalize. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146378 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-12Support/FileSystem: Implement bool equivalent(file_status A, file_status B);Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146364 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-12Support/FileSystem: Implement canonicalize.Michael J. Spencer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146363 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-08Support/FileSystem: Implement recursive_directory_iterator and makeMichael J. Spencer
directory_iterator preserve InputIterator semantics on copy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146200 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-01rename getHostTriple into getDefaultTargetTripleSebastian Pop
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143502 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-01rename LLVM_HOSTTRIPLE into LLVM_DEFAULT_TARGET_TRIPLESebastian Pop
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143501 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-01Remove a couple unused methods. PR11201.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143452 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-23sys::Process: Add a SetWorkingDirectory method.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140433 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-20Remove the hack to check UNAME_RELEASE when identifying the Darwin version.Bob Wilson
This was only needed to locate llvm-gcc's installation directory when clang falls back to run llvm-gcc for i386 kexts. As of clang svn r140187, we're now just searching paths with several different Darwin versions on either side of the current version, so this is no longer needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140188 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-14Include limits.h to make sure PATH_MAX is known on Solaris 10.Bill Wendling
Patch by Joakim Johansson! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139743 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-10Clarify a comment.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137204 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-09Put Darwin-specific code inside an __APPLE__ ifdef.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137137 91177308-0d34-0410-b5e6-96231b3b80d8
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