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271 Commits

Author SHA1 Message Date
Duncan Sands
5c77da0572 Using a signal handler that does nothing should be 
equivalent to SIG_IGN.

llvm-svn: 81144
 2009-09-07 05:58:25 +00:00
Duncan Sands
598fe699d0 Remove some not-really-used variables, as warned 
about by icc (#593, partial).  Patch by Erick Tryzelaar.

llvm-svn: 81115
 2009-09-06 12:41:19 +00:00
Duncan Sands
4b92376ba8 Tweak code into an equivalent form for which icc 
doesn't warn about unreachable instructions.  Patch
by Erick Tryzelaar (#111).

llvm-svn: 81110
 2009-09-06 10:53:22 +00:00
Daniel Dunbar
ac461a55ce Improve llvm::getHostTriple for some cases where the LLVM_HOSTTRIPLE is not 
reliable.

llvm-svn: 80863
 2009-09-03 01:10:13 +00:00
Chris Lattner
11f509336c remove the last uses of Config/alloca.h 
llvm-svn: 79873
 2009-08-23 22:57:38 +00:00
Chris Lattner
3203639c35 Prune #includes from llvm/Linker.h and llvm/System/Path.h, 
forcing them down into various .cpp files.

This change also:
1. Renames TimeValue::toString() and Path::toString() to ::str()
   for similarity with the STL.
2. Removes all stream insertion support for sys::Path, forcing
   clients to call .str().
3. Removes a use of Config/alloca.h from bugpoint, using smallvector
   instead.
4. Weans llvm-db off <iostream>

sys::Path really needs to be gutted, but I don't have the desire to
do it at this point.

llvm-svn: 79869
 2009-08-23 22:45:37 +00:00
Owen Anderson
bbc67a90d5 Get rid of a helgrind warning. If this is _actually_ a performance problem, 
we can find a way to cache the answer that isn't racy.

llvm-svn: 79472
 2009-08-19 21:48:34 +00:00
Owen Anderson
ed218e5820 Add locking around signal handler registration. 
llvm-svn: 79254
 2009-08-17 17:07:22 +00:00
Dan Gohman
1c41d60c4a Fix a bunch of namespace pollution. 
llvm-svn: 78363
 2009-08-07 01:32:21 +00:00
Dan Gohman
50e5bf5aa4 Minor code simplification. 
llvm-svn: 78239
 2009-08-05 20:16:55 +00:00
Dan Gohman
38208563e9 Update a comment to reflect the current code. 
llvm-svn: 78215
 2009-08-05 17:32:39 +00:00
Dan Gohman
587b5b9682 Remove needless uses of std::flush in the parent process after a 
fork call. This eliminates a need for <iostream>. Also remove
needless fsync calls.

llvm-svn: 78131
 2009-08-05 00:17:00 +00:00
Dan Gohman
a8cb86c0f5 Use _exit rather than exit in the child process after a failed exec. 
Add a comment explaining why.

llvm-svn: 78128
 2009-08-05 00:09:12 +00:00
Dan Gohman
a9ceec3d38 Follow Unix behavior and return 127 if the command is not found, 
and 126 if it is not executable.

llvm-svn: 78120
 2009-08-04 23:15:49 +00:00
Daniel Dunbar
6a5b6a721e When exec() fails, return 127 instead of errno; the parent process has no way to 
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).

llvm-svn: 78098
 2009-08-04 20:32:25 +00:00
Daniel Dunbar
c5047d9d96 Fix a race condition in getting the process exit code on Win32. 
llvm-svn: 77953
 2009-08-03 05:02:46 +00:00
Dan Gohman
454f9dc117 Remove another F_OK. 
llvm-svn: 77405
 2009-07-29 00:02:58 +00:00
Dan Gohman
94bc13beac On "Unix", if Program::FindProgramByName is given a name containing 
slashes, just go with it, regardless of whether it looks like it will
be executable. This follows the behavior of sh(1) more closely.

llvm-svn: 77396
 2009-07-28 23:25:18 +00:00
Dan Gohman
3341edff8b It isn't necessary to use F_OK when using R_OK or similar. 
llvm-svn: 77392
 2009-07-28 23:22:01 +00:00
Benjamin Kramer
c5d38b51da Fix a fixme; don't take binaries from the working directory. 
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!

llvm-svn: 77379
 2009-07-28 22:08:15 +00:00
Reid Kleckner
3f197c850d Re-committing r76828 with the JIT memory manager changes now that the build 
bots like the BumpPtrAllocator changes.

llvm-svn: 76902
 2009-07-23 21:46:56 +00:00
Reid Kleckner
6f9bf7f028 Reverting r76825 and r76828, since they caused clang runtime errors and some build failure involving memset. 
llvm-svn: 76838
 2009-07-23 01:40:54 +00:00
Reid Kleckner
b500f07edf Make the JIT code emitter properly retry and ask for more memory when it runs 
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.

llvm-svn: 76828
 2009-07-23 00:49:59 +00:00
Mikhail Glushenkov
583e23d726 Remove duplication in Program::Execute{And,No}Wait. 
Implemented by moving the code out of static functions into methods of Program
class.

llvm-svn: 76340
 2009-07-18 21:43:12 +00:00
Mikhail Glushenkov
d44eba5166 Trailing whitespace. 
llvm-svn: 76229
 2009-07-17 20:38:17 +00:00
Daniel Dunbar
995f9a8a15 Improve sys::Path::makeAbsolute on Win32. 
- Patch by Viktor Kutuzov!

 - Minor tweak by me to add llvm_unreachable calls on FIXMEd error paths.

llvm-svn: 75424
 2009-07-12 20:23:56 +00:00
Chris Lattner
cf99e77cc3 "UNIX paths can contain non-ASCII characters, so Path::isValid() should not reject paths with such characters in them. The attached patch removes the check from Path::isValid()." 
patch by Benjamin Kramer!

llvm-svn: 75421
 2009-07-12 19:01:16 +00:00
David Greene
87dbe0a3b5 Add an ExecuteNoWait interface to support asynchronous process spawning. 
llvm-svn: 75055
 2009-07-08 21:46:40 +00:00
Jeffrey Yasskin
29ea777c1e Add a portable strerror*() wrapper, llvm::sys::StrError(). This includes the 
Windows variant, strerror_s, but I couldn't test that.

I'll update configure and config.h.in in a subsequent patch.

llvm-svn: 74621
 2009-07-01 18:11:20 +00:00
Owen Anderson
77f965d8b2 Fix compilation without pthreads. 
Patch by Xerxes Ranby.

llvm-svn: 74283
 2009-06-26 08:48:03 +00:00
Owen Anderson
e716e57779 Add a class for supporting platform independent thread-local storage. 
Windows people, please double-check/patch this.

llvm-svn: 74209
 2009-06-25 21:58:01 +00:00
Owen Anderson
4760da0a7a Give RWMutex the SmartRWMutex treatment too. 
llvm-svn: 73710
 2009-06-18 18:26:15 +00:00
Owen Anderson
9aaa6b8958 Insert a SmartMutex templated class into the class hierarchy, which takes a 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.

llvm-svn: 73709
 2009-06-18 17:53:17 +00:00
Owen Anderson
48d53f2c53 Add a portable wrapper for reader-writer locks. 
llvm-svn: 73545
 2009-06-16 20:19:28 +00:00
Dan Gohman
d0637707c5 glibc has two versions of strerror_r, a standards compliant one and a GNU 
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!

llvm-svn: 73396
 2009-06-15 18:05:46 +00:00
Chris Lattner
dfaaf63aff add a new static method to portably determine whether a patch is 
absolute or not, based on a patch by Gregory Curfman!

llvm-svn: 73368
 2009-06-15 04:17:07 +00:00
Torok Edwin
5da9f51d1e Add support for outputting ANSI colors to raw_fd_ostream. 
llvm-svn: 72854
 2009-06-04 07:09:50 +00:00
Bill Wendling
8235a05c1a Untabification. 
llvm-svn: 72604
 2009-05-30 01:09:53 +00:00
Jay Foad
ccae25d83b Work around a page size issue on Cygwin. 
llvm-svn: 72332
 2009-05-23 17:57:59 +00:00
Douglas Gregor
1ad25cdc99 termios.h contains the winsize structure we need to determine the 
width of a terminal. Don't try to get the width of a terminal if we
don't have this header.

llvm-svn: 72018
 2009-05-18 17:21:34 +00:00
Douglas Gregor
26745696ef Add terminal width detection to llvm::sys::Process. This is needed to 
fix Clang PRs 4148 and 4183.

llvm-svn: 71448
 2009-05-11 18:05:52 +00:00
Daniel Dunbar
024320d274 Make Unix.h:MakeErrMsg separate the prefix and errno string, so we get: 
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/": ").

llvm-svn: 69626
 2009-04-20 20:50:13 +00:00
Chris Lattner
76d47b6629 fix PR3965:SIGINT handler not restored after calling ParseAST(), 
patch by Alexei Svitkine!

llvm-svn: 68929
 2009-04-12 23:33:13 +00:00
Daniel Dunbar
aec3d9857f Add llvm::sys::getHostTriple and remove 
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.

llvm-svn: 68118
 2009-03-31 17:30:15 +00:00
Chris Lattner
095a3938e4 fix a bug Alexei Svitkine pointed out. 
llvm-svn: 67510
 2009-03-23 06:46:20 +00:00
Chris Lattner
910f31715e When we restore signal handlers, restore them back to what they 
were when we came around, not to their default handler.  This 
should fix PR3848

llvm-svn: 67509
 2009-03-23 05:55:36 +00:00
Chris Lattner
429a82ad30 factorize signal registration, part of PR3848. 
llvm-svn: 67508
 2009-03-23 05:42:29 +00:00
Chris Lattner
778f77667d add some explicit llvm:: qualifiers to the unix side, fix problems on the windows side. 
llvm-svn: 66386
 2009-03-08 19:13:45 +00:00
Chris Lattner
005d001719 When a crash signal is delivered do two things: remove all of our 
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

llvm-svn: 66330
 2009-03-07 08:15:47 +00:00
Chris Lattner
0743280d7a move some code to gracefully handle the case when a handler crashes. 
llvm-svn: 66171
 2009-03-05 18:22:14 +00:00