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* Use auto instead of the long type name. NFC.Steven Wu2015-05-071-2/+1
| | | | llvm-svn: 236768
* Fix another hang caused by ManagedStatic in SignalHandlerSteven Wu2015-05-071-4/+11
| | | | | | | | | Fix two other variables that might cause the same hang fixed in r235914. The hang is caused by constructing ManagedStatic in signalhandler. In this case, if FileToRemove or CallBacksToRun is not contructed, it means there is no work to do. llvm-svn: 236741
* Fixes a hang that can occur if a signal comes in during malloc calls.Chris Bieneman2015-04-271-0/+6
| | | | | | We need to dereference the signals mutex during handler registration so that we force its construction. This is to prevent the first use being during handling an actual signal because you can't safely allocate memory in a signal handler. llvm-svn: 235914
* Fix build broken by incorrect class name.Zachary Turner2015-04-271-3/+3
| | | | llvm-svn: 235901
* Make an RAII com initializer.Zachary Turner2015-04-271-0/+27
| | | | | | | Differential Revision: http://reviews.llvm.org/D9267 Reviewed By: Aaron Ballman, David Majnemer llvm-svn: 235898
* Add boolean to PrintStackTraceOnErrorSignal to disable crash reporting.Pete Cooper2015-04-071-2/+2
| | | | | | | | | | | | | | | | | | | The current crash reporting on Mac OS is only disabled via an environment variable. This adds a boolean (default false) which can also disable crash reporting. The only client right now is the unittests which don't ever want crash reporting, but do want to detect killed programs. Reduces the time to run the APFloat unittests on my machine from [----------] 47 tests from APFloatTest (51250 ms total) to [----------] 47 tests from APFloatTest (765 ms total) Reviewed by Reid Kleckner and Justin Bogner llvm-svn: 234353
* Purge unused includes throughout libSupport.Benjamin Kramer2015-03-231-1/+2
| | | | | | NFC. llvm-svn: 232976
* Replace PrintStackTrace(FILE*) with PrintStackTrace(raw_ostream&)Zachary Turner2015-03-051-21/+23
| | | | | | | | | | This will be followed by a change on the clang side to update the only user of this function with the new version. Differential Revision: http://reviews.llvm.org/D8074 Reviewed By: Reid Kleckner llvm-svn: 231392
* Small cleanup. Don't use else when not needed.Davide Italiano2015-02-211-4/+2
| | | | | | Pointed out by David Majnemer. llvm-svn: 230122
* Checking if TARGET_OS_IPHONE is defined isn't good enough for 10.7 and earlier.Chris Bieneman2015-02-191-2/+10
| | | | | | | | Older versions of the TargetConditionals header always defined TARGET_OS_IPHONE to something (0 or 1), so we need to test not only for the existence but also if it is 1. This resolves PR22631. llvm-svn: 229904
* [Support/Timer] Make GetMallocUsage() aware of jemalloc.Davide Italiano2015-02-191-0/+10
| | | | | | | Differential Revision: D7657 Reviewed by: shankarke, majnemer llvm-svn: 229824
* Removing LLVM_DELETED_FUNCTION, as MSVC 2012 was the last reason for ↵Aaron Ballman2015-02-151-2/+2
| | | | | | requiring the macro. NFC; LLVM edition. llvm-svn: 229340
* Triple: refactor redundant code.Tim Northover2015-02-121-19/+5
| | | | | | | | | | Should be no functional change, since most of the logic removed was completely pointless (after some previous refactoring) and the rest duplicated elsewhere. Patch by Kamil Rytarowski. llvm-svn: 228926
* iOS doesn't have crt_externs.h available, so we fall back to the posix method.Chris Bieneman2015-01-301-2/+5
| | | | llvm-svn: 227521
* [Support][Windows] Unify dialog box suppression and print stack traces on abort.Michael J. Spencer2015-01-291-0/+2
| | | | llvm-svn: 227470
* [mips] Use __clear_cache builtin instead of cacheflush()Petar Jovanovic2015-01-271-13/+2
| | | | | | | | | Use __clear_cache builtin instead of cacheflush() in Unix Memory::InvalidateInstructionCache(). Differential Revision: http://reviews.llvm.org/D7198 llvm-svn: 227269
* [cleanup] Re-sort all the #include lines in LLVM usingChandler Carruth2015-01-141-3/+3
| | | | | | | | | | | utils/sort_includes.py. I clearly haven't done this in a while, so more changed than usual. This even uncovered a missing include from the InstrProf library that I've added. No functionality changed here, just mechanical cleanup of the include order. llvm-svn: 225974
* Remove unnecessary StringRef->std::string conversion.Alexey Samsonov2014-12-291-1/+1
| | | | llvm-svn: 224953
* ThreadLocal: Move Unix-specific code out of Support/ThreadLocal.cppDavid Majnemer2014-12-151-0/+43
| | | | | | Just a cleanup, no functionality change is intended. llvm-svn: 224227
* ThreadLocal: Return a mutable pointer if templated with a non-const typeDavid Majnemer2014-12-151-1/+1
| | | | | | | It makes more sense for ThreadLocal<const T>::get to return a const T* and ThreadLocal<T>::get to return a T*. llvm-svn: 224225
* MAP_FILE is the default. We don't need to add it.Rafael Espindola2014-12-121-3/+0
| | | | llvm-svn: 224144
* Move the resize file feature from mapped_file_region to the only user.Rafael Espindola2014-12-121-13/+1
| | | | | | This removes a duplicated stat on every file that llvm-ar looks at. llvm-svn: 224138
* Pass a FD to resise_file and add a testcase.Rafael Espindola2014-12-121-5/+2
| | | | | | I will add a real use in another commit. llvm-svn: 224136
* Remove a convoluted way of calling close by moving the call to the only caller.Rafael Espindola2014-12-111-46/+6
| | | | | | As a bonus we can actually check the return value. llvm-svn: 224046
* Remove dead code. NFC.Rafael Espindola2014-12-111-33/+0
| | | | llvm-svn: 224029
* Remove dead code. NFC.Rafael Espindola2014-12-043-34/+6
| | | | | | This interface was added 2 years ago but users never developed. llvm-svn: 223368
* Fix several bugs in r221220's new program finding code.Chandler Carruth2014-12-021-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | In both the Unix and Windows variants, std::getenv was called and the result passed directly to a function accepting a StringRef. This isn't OK because it might return a null pointer and that causes the StringRef constructor to assert (and generally produces crash-prone code if asserts are disabled). Fix this by independently testing the result as non-null prior to splitting things. This in turn uncovered another bug in the Unix variant where it would infinitely recurse if PATH="", or after this fix if PATH isn't set. There is no need to recurse at all. Slightly re-arrange the code to make it clear that we can just fixup the Paths argument based on the environment if we find anything. I don't know of a particularly useful way to test these routines in LLVM. I'll commit a test to Clang that ensures that its driver correctly handles various settings of PATH. However, I have no idea how to correctly write a Windows test for the PATHEXT change. Any Windows developers who could provide such a test, please have at. =D Many thanks to Nick Lewycky and others for helping debug this. =/ It was quite nasty for us to track down. llvm-svn: 223099
* Revert 220932.Jiangning Liu2014-11-051-5/+0
| | | | | | | | | Commit 220932 caused crash when building clang-tblgen on aarch64 debian target, so it's blocking all daily tests. The std::call_once implementation in pthread has bug for aarch64 debian. llvm-svn: 221331
* Remove FindProgramByName. NFC.Rafael Espindola2014-11-042-48/+4
| | | | llvm-svn: 221258
* [Support][Program] Add findProgramByName(Name, OptionalPaths)Michael J. Spencer2014-11-041-0/+28
| | | | llvm-svn: 221220
* Update the non-pthreads fallback for RWMutex on UnixDavid Blaikie2014-10-311-6/+6
| | | | | | | | | | Tested this by #if 0'ing out the pthreads implementation, which indicated that this fallback was not currently compiling successfully and applying this patch resolves that. Patch by Andy Chien. llvm-svn: 220969
* Removing the static initializer in ManagedStatic.cpp by using llvm_call_once ↵Chris Bieneman2014-10-301-0/+5
| | | | | | | | | | | | | | | | | | | to initialize the ManagedStatic mutex. Summary: This patch adds an llvm_call_once which is a wrapper around std::call_once on platforms where it is available and devoid of bugs. The patch also migrates the ManagedStatic mutex to be allocated using llvm_call_once. These changes are philosophically equivalent to the changes added in r219638, which were reverted due to a hang on Win32 which was the result of a bug in the Windows implementation of std::call_once. Reviewers: aaron.ballman, chapuni, chandlerc, rnk Reviewed By: rnk Subscribers: majnemer, llvm-commits Differential Revision: http://reviews.llvm.org/D5922 llvm-svn: 220932
* Fix bug where sys::Wait could wait on wrong pid.Rafael Espindola2014-10-271-1/+0
| | | | | | | | Setting ChildPid to -1 would cause waitpid to wait for any child process. Patch by Daniel Reynaud! llvm-svn: 220717
* Strength reduce constant-sized vectors into arrays. No functionality change.Benjamin Kramer2014-10-221-8/+6
| | | | llvm-svn: 220412
* Unix/Signals.inc: Let findModulesAndOffsets() built conditionally regarding ↵NAKAMURA Takumi2014-10-131-2/+3
| | | | | | to (defined(HAVE_BACKTRACE) && defined(ENABLE_BACKTRACES)). [-Wunused-function] llvm-svn: 219596
* [Modules] Add some missing includes to make files compile stand-alone.Benjamin Kramer2014-10-121-0/+3
| | | | llvm-svn: 219592
* Guard the definition of the stack tracing function with the same macrosChandler Carruth2014-10-111-0/+2
| | | | | | | that guard its usage. Without this, we can get unused function warnings when backtraces are disabled. llvm-svn: 219558
* Follow-up to r219534 to make symbolization more robust.Alexey Samsonov2014-10-101-2/+7
| | | | | | | | | | 1) Explicitly provide important arguments to llvm-symbolizer, not relying on defaults. 2) Be more defensive about symbolizer output. This might fix weird failures on ninja-x64-msvc-RA-centos6 buildbot. llvm-svn: 219541
* Re-land r219354: Use llvm-symbolizer to symbolize LLVM/Clang crash dumps.Alexey Samsonov2014-10-101-1/+140
| | | | | | | | | | | | In fact, symbolization is now expected to work only on Linux and FreeBSD/NetBSD, where we have dl_iterate_phdr and can learn the main executable name without argv0 (it will be possible on BSD systems after http://reviews.llvm.org/D5693 lands). #ifdef-out the code for all the rest Unix systems. Reviewed in http://reviews.llvm.org/D5610 llvm-svn: 219534
* Revert r219354. It seems to break some buildbots.Alexey Samsonov2014-10-081-139/+1
| | | | llvm-svn: 219355
* Use llvm-symbolizer to symbolize LLVM/Clang crash dumps.Alexey Samsonov2014-10-081-1/+139
| | | | | | | | | | | | | | | | This change modifies fatal signal handler used in LLVM tools. Now it attempts to find llvm-symbolizer binary and communicates with it in order to turn instruction addresses into function/file/line info entries. This should significantly improve stack traces readability in Debug builds. This feature only works on selected platforms (including Darwin and Linux). If the symbolization fails for some reason, signal handler will fallback to the original behavior. Reviewed in http://reviews.llvm.org/D5610 llvm-svn: 219354
* Unix/Process: Don't use pthread_sigmask if we aren't built with threadsDavid Majnemer2014-10-081-1/+12
| | | | | | | | We won't link in pthreads if we weren't built with LLVM_ENABLE_THREADS which means we won't get access to pthread_sigmask. Use sigprocmask instead. llvm-svn: 219288
* Attempt to calm down buildbotsDavid Majnemer2014-10-071-0/+3
| | | | llvm-svn: 219190
* Support: Don't call close again if we get EINTRDavid Majnemer2014-10-071-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | Most Unix-like operating systems guarantee that the file descriptor is closed after a call to close(2), even if close comes back with EINTR. For these systems, calling close _again_ will either do nothing or close some other file descriptor open(2)'d by another thread. (Linux) However, some operating systems do not have this behavior. They require at least another call to close(2) before guaranteeing that the descriptor is closed. (HP-UX) And some operating systems have an unpredictable blend of the two behaviors! (xnu) Avoid this disaster by blocking all signals before we call close(2). This ensures that a signal will not be delivered to the thread and close(2) will not give us back EINTR. We restore the signal mask once the operation is done. N.B. This isn't a problem on Windows, it doesn't have a notion of EINTR because signals always get delivered to dedicated signal handling threads. llvm-svn: 219189
* Support: Add a utility to remap std{in,out,err} to /dev/null if closedDavid Majnemer2014-10-061-0/+59
| | | | | | | | | | | | | | | It's possible to start a program with one (or all) of the standard file descriptors closed. Subsequent open system calls will give the program a low-numbered file descriptor. This is problematic because we may believe we are writing to standard out instead of a file. Introduce Process::FixupStandardFileDescriptors, a helper function to remap standard file descriptors to /dev/null if they were closed before the program started. llvm-svn: 219170
* Adding #ifdef around TermColorMutex based on feedback from Craig Topper.Chris Bieneman2014-09-241-0/+2
| | | | llvm-svn: 218401
* Unix/Host.inc: Remove <cstdlib>. It has been unused for a long time.NAKAMURA Takumi2014-09-241-1/+0
| | | | llvm-svn: 218373
* Unix/Host.inc: Wrap a comment line in 80-col.NAKAMURA Takumi2014-09-241-1/+2
| | | | llvm-svn: 218371
* Unix/Host.inc: Remove leading whitespace. It had been here since r56942!NAKAMURA Takumi2014-09-241-1/+1
| | | | llvm-svn: 218370
* Converting terminalHasColors mutex to a global ManagedStatic to avoid the ↵Chris Bieneman2014-09-221-2/+4
| | | | | | static destructor. llvm-svn: 218283
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