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2009-09-04Merge 80863 from mainline.Tanya Lattner
Improve llvm::getHostTriple for some cases where the LLVM_HOSTTRIPLE is not reliable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_26@81033 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-19Get rid of a helgrind warning. If this is _actually_ a performance problem,Owen Anderson
we can find a way to cache the answer that isn't racy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79472 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-17Add locking around signal handler registration.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79254 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07Fix a bunch of namespace pollution.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78363 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Minor code simplification.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78239 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Update a comment to reflect the current code.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78215 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Remove needless uses of std::flush in the parent process after aDan Gohman
fork call. This eliminates a need for <iostream>. Also remove needless fsync calls. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78131 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Use _exit rather than exit in the child process after a failed exec.Dan Gohman
Add a comment explaining why. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78128 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04Follow Unix behavior and return 127 if the command is not found,Dan Gohman
and 126 if it is not executable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78120 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04When exec() fails, return 127 instead of errno; the parent process has no way toDaniel Dunbar
distinguish that the result is errno, so it can't use it to provide more information about the error (it also exposes the numeric value of errno). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78098 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03Fix a race condition in getting the process exit code on Win32.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77953 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-29Remove another F_OK.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77405 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-28On "Unix", if Program::FindProgramByName is given a name containingDan Gohman
slashes, just go with it, regardless of whether it looks like it will be executable. This follows the behavior of sh(1) more closely. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77396 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-28It isn't necessary to use F_OK when using R_OK or similar.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77392 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-28Fix a fixme; don't take binaries from the working directory.Benjamin Kramer
This fixes clang on non-darwin platforms if a file called 'ld' or 'as' is in the working directory. Based on patch by Pawel Worach! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77379 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-23Re-committing r76828 with the JIT memory manager changes now that the buildReid Kleckner
bots like the BumpPtrAllocator changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76902 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-23Reverting r76825 and r76828, since they caused clang runtime errors and some ↵Reid Kleckner
build failure involving memset. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76838 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-23Make the JIT code emitter properly retry and ask for more memory when it runsReid Kleckner
out of memory, and also make the default memory manager allocate more memory when it runs out. Also, switch function stubs and global data over to using the BumpPtrAllocator. This makes it so the JIT no longer mmaps (or the equivalent on Windows) 16 MB of memory, and instead allocates in 512K slabs. I suspect this size could go lower, especially on embedded platforms, now that more slabs can be allocated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76828 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-18Remove duplication in Program::Execute{And,No}Wait.Mikhail Glushenkov
Implemented by moving the code out of static functions into methods of Program class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76340 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-17Trailing whitespace.Mikhail Glushenkov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76229 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-12Improve sys::Path::makeAbsolute on Win32.Daniel Dunbar
- Patch by Viktor Kutuzov! - Minor tweak by me to add llvm_unreachable calls on FIXMEd error paths. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75424 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-12"UNIX paths can contain non-ASCII characters, so Path::isValid() should not ↵Chris Lattner
reject paths with such characters in them. The attached patch removes the check from Path::isValid()." patch by Benjamin Kramer! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75421 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-08Add an ExecuteNoWait interface to support asynchronous process spawning.David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75055 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-01Add a portable strerror*() wrapper, llvm::sys::StrError(). This includes theJeffrey Yasskin
Windows variant, strerror_s, but I couldn't test that. I'll update configure and config.h.in in a subsequent patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74621 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-26Fix compilation without pthreads.Owen Anderson
Patch by Xerxes Ranby. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74283 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-25Add a class for supporting platform independent thread-local storage.Owen Anderson
Windows people, please double-check/patch this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74209 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-18Give RWMutex the SmartRWMutex treatment too.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73710 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-18Insert a SmartMutex templated class into the class hierarchy, which takes a ↵Owen Anderson
template parameter specifying whether this mutex should become a no-op when not running in multithreaded mode. Make sys::Mutex a typedef of SmartMutex<false>, to preserve source compatibility. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73709 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-16Add a portable wrapper for reader-writer locks.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73545 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-15glibc has two versions of strerror_r, a standards compliant one and a GNUDan Gohman
specific one. The GNU one is chosen when _GNU_SOURCE is defined. g++ always defines _GNU_SOURCE on linux platforms because glibc's headers won't compile in C++ mode without it. The GNU strerror_r doesn't always modify the buffer which causes empty error messages on linux. This patch changes MakeErrMsg to use the return value of strerror_r to get the string instead of assuming the buffer will be modified, on GLIBC. Patch by Benjamin Kramer! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73396 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-15add a new static method to portably determine whether a patch isChris Lattner
absolute or not, based on a patch by Gregory Curfman! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73368 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-04Add support for outputting ANSI colors to raw_fd_ostream.Torok Edwin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72854 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-30Untabification.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72604 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-23Work around a page size issue on Cygwin.Jay Foad
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72332 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-18termios.h contains the winsize structure we need to determine theDouglas Gregor
width of a terminal. Don't try to get the width of a terminal if we don't have this header. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72018 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-11Add terminal width detection to llvm::sys::Process. This is needed toDouglas Gregor
fix Clang PRs 4148 and 4183. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71448 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-20Make Unix.h:MakeErrMsg separate the prefix and errno string, so we get:Daniel Dunbar
clang: error: unable to make temporary file: /etc/cc: can't make unique filename: Permission denied instead of clang: error: unable to make temporary file: /etc/cc: can't make unique filenamePermission denied for example. Also, audited the uses of MakeErrMsg to make the prefix strings consistent (not end with newline/punctuation/space/": "). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69626 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-12fix PR3965:SIGINT handler not restored after calling ParseAST(),Chris Lattner
patch by Alexei Svitkine! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68929 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-31Add llvm::sys::getHostTriple and removeDaniel Dunbar
llvm::sys::getOS{Name,Version}. Right now the implementation just derives from LLVM_HOSTTRIPLE (which is wrong, but it doesn't look like we have a define for the target triple). Ideally this routine would actually be able to compute the triple for targets we care about. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68118 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-23fix a bug Alexei Svitkine pointed out.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67510 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-23When we restore signal handlers, restore them back to what theyChris Lattner
were when we came around, not to their default handler. This should fix PR3848 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67509 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-23factorize signal registration, part of PR3848.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67508 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-08add some explicit llvm:: qualifiers to the unix side, fix problems on the ↵Chris Lattner
windows side. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66386 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-07When a crash signal is delivered do two things: remove all of ourChris Lattner
signal handlers to prevent reentrance on unrelated things (a sigabort where the handle bus errors) also, clear the signal mask so that the signal doesn't infinitely reissue. This fixes rdar://6654827 - Crash causes clang to loop git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66330 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-05move some code to gracefully handle the case when a handler crashes.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66171 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-04Add a new 'AddSignalHandler' function to Signals.h that allowsChris Lattner
arbitrary functions to be run when a crash happens. Delete RemoveDirectoryOnSignal as it is dead and has never had clients. Change PrintStackTraceOnErrorSignal to be implemented in terms of AddSignalHandler. I updated the Win32 versions of these APIs, but can't test them. If there are any problems, I'd be happy to fix them as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66072 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-02Fix main executable path name resolution on FreeBSD, patch by Chris Lattner
Ed Schouten! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65882 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-19If an executable is run through a symlink, dladdr will return theChris Lattner
symlink. We really want the ultimate executable being run, not the symlink. This lets clang find its headers when invoked through a symlink. rdar://6602012 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65017 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-15Fix warning on gcc 4.3.Mikhail Glushenkov
"system() declared with attribute warn_unused_result." git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64574 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-15Whitespace fixes.Mikhail Glushenkov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64573 91177308-0d34-0410-b5e6-96231b3b80d8
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