Commit Graph

106 Commits

Author SHA1 Message Date
Daniel Dunbar
71e5ea8860 PathV2: Fix a possible infinite loop.
- The code could infinite loop trying to create unique files, if the directory
   containing the unique file exists, but open() calls on non-existent files in
   the path return ENOENT. This is true on the /dev/fd filesystem, for example.

 - Will add a clang side test case for this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168081 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-15 20:24:52 +00:00
Daniel Dunbar
81e35ff722 Support: Don't remove special files on signals.
- 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
2012-10-17 16:30:54 +00:00
Benjamin Kramer
53347ed2f8 Make backtraces work again with both the configure and cmake build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164817 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-28 10:10:46 +00:00
Sylvestre Ledru
bec3ce0cb5 The assumption that /proc/self/exe always exists is incorrect.
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
2012-09-26 08:30:35 +00:00
Eric Christopher
c69bdadac9 Add an --enable-backtraces option to configure to determine
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
2012-09-21 23:03:29 +00:00
Andrew Kaylor
bbf628b6ce This patch adds memory support functions which will later be used to implement section-specific protection handling in MCJIT.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164249 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-19 20:46:12 +00:00
Chandler Carruth
7b617158db Add support for finding cacheflush on OpenBSD/mips64 platforms.
Patch by Brad Smith!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163584 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-11 01:17:24 +00:00
NAKAMURA Takumi
2de91673ff Whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163289 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-06 03:02:56 +00:00
NAKAMURA Takumi
383fb7f026 Unix/Signals.inc: Fix a typo. Thanks to Dani Berg!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163288 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-06 03:01:43 +00:00
Michael J. Spencer
118f194966 Properly test the LLVM_USE_RVALUE_REFERENCES macro.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161978 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-15 19:16:27 +00:00
Michael J. Spencer
1ebd25e438 [PathV2] Add mapped_file_region. Implementation for Windows and POSIX.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161976 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-15 19:05:47 +00:00
Joerg Sonnenberger
c103ede50b stdcxx's cstdio doesn't include stdio.h, but the code using PathV2.inc
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
2012-08-10 10:56:09 +00:00
Eric Christopher
b0f6759ab9 Add support for the OpenBSD for Bitrig.
Patch by David Hill.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161344 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-06 20:52:18 +00:00
Daniel Dunbar
7d83658140 Process: Add sys::Process::FileDescriptorHasColors().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160557 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-20 18:29:38 +00:00
Galina Kistanova
d897599e5b Fixed few warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160142 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-12 20:45:36 +00:00
Nick Kledzik
ca077ec5ea Add permissions(), map_file_pages(), and unmap_file_pages() to llvm::sys::fs 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
2012-06-20 00:28:54 +00:00
Chandler Carruth
29436629da Don't call 'FilesToRemove[0]' when the vector is empty, even to compute
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
2012-06-16 00:44:07 +00:00
Chandler Carruth
0b8b3ba21e Harden the Unix signals code to be more async signal safe.
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
2012-06-16 00:09:41 +00:00
Benjamin Kramer
1222c5c121 Use access(2) instead of stat(2) to check if a file exists.
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
2012-06-02 16:28:09 +00:00
Eric Christopher
61aef8bdf7 Allow unique_file to take a mode for file permissions, but default
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
2012-05-11 00:07:44 +00:00
Daniel Dunbar
2b8f3ba843 [Support] Fix sys::GetRandomNumber() to always use a high quality seed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156414 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-08 20:38:00 +00:00
NAKAMURA Takumi
dc736b0a3e Unix/Process.inc: Give more useful random seed to srand. Workaround for PR12743.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156252 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-06 08:24:24 +00:00
NAKAMURA Takumi
24cddd5c9a Support/Process: Move llvm::sys::Process::GetRandomNumber() from Process.cpp 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
2012-05-06 08:24:18 +00:00
Daniel Dunbar
463a719d36 [Support] Fix up comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156239 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-05 16:39:22 +00:00
Daniel Dunbar
92bb514612 [Support] Rewrite sys::fs::unique_file to not be stupid with /dev/urandom.
- 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
2012-05-05 16:36:24 +00:00
Michael J. Spencer
8dab504799 [Support/Unix] Unconditionally include time.h.
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
2012-04-23 19:00:27 +00:00
Sylvestre Ledru
9dc06bd431 Conflict with st_dev/st_ino identifiers under Debian GNU/Hurd
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
2012-04-23 16:37:23 +00:00
Benjamin Kramer
246de858e3 Reapply 'Add reverseColor to raw_ostream'.
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
2012-04-16 08:56:50 +00:00
Argyrios Kyrtzidis
c9413c745b Revert r154800 which breaks windows builders.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154802 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-16 07:59:39 +00:00
Argyrios Kyrtzidis
7d31d75a77 Add reverseColor to raw_ostream.
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
2012-04-16 07:07:38 +00:00
Sylvestre Ledru
6fc30c26b7 Fix the build under Debian GNU/Hurd.
Thanks to Pino Toscano for the patch



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154500 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-11 15:35:36 +00:00
Anton Korobeynikov
a3ad585393 Fix GetMainExecutable on kFreeBSD.
Patch by Sylvestre Ledru!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153435 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-26 12:05:51 +00:00
Jean-Daniel Dupas
300361a717 Fix null to integer conversion warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153395 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-24 22:17:50 +00:00
David Blaikie
58604cd944 Change default error_code ctor to a 'named ctor' so it's more self-documenting.
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
2012-02-09 19:24:12 +00:00
Chandler Carruth
4aab4ab340 Remove SetWorkingDirectory from the Process interface. Nothing in LLVM
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
2012-01-15 08:41:35 +00:00
Argyrios Kyrtzidis
08713b37c3 Disable the crash reporter when running lit tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147965 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11 20:53:25 +00:00
Sebastian Pop
6e9b5eb51b revert r147542 after comments from Joerg Sonnenberger
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147608 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-05 18:28:46 +00:00
Sebastian Pop
8a86887ba3 use getHostTriple instead of getDefaultTargetTriple in getClosestTargetForJIT
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
2012-01-04 19:47:22 +00:00
Michael J. Spencer
b92cb30cf5 Support/Program: Make Change<stream>ToBinary return error_code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146522 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-13 23:16:49 +00:00
Chad Rosier
7ae606a2a8 Revert r146363 to allow buildbots to make forward progress.
Original commit message:
Support/FileSystem: Implement canonicalize.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146378 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-12 17:58:31 +00:00
Michael J. Spencer
d45fbe6227 Support/FileSystem: Implement bool equivalent(file_status A, file_status B);
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146364 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-12 06:04:28 +00:00
Michael J. Spencer
c3b00e8040 Support/FileSystem: Implement canonicalize.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146363 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-12 06:04:01 +00:00
Michael J. Spencer
a81ac8f2b5 Support/FileSystem: Implement recursive_directory_iterator and make
directory_iterator preserve InputIterator semantics on copy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146200 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-08 22:50:09 +00:00
Sebastian Pop
0173864d8a rename getHostTriple into getDefaultTargetTriple
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143502 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-01 21:32:20 +00:00
Sebastian Pop
de2e0b5e6d rename LLVM_HOSTTRIPLE into LLVM_DEFAULT_TARGET_TRIPLE
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143501 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-01 21:31:44 +00:00
Eli Friedman
c94792507d Remove a couple unused methods. PR11201.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143452 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-01 05:11:01 +00:00
Daniel Dunbar
bb0a6126cf sys::Process: Add a SetWorkingDirectory method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140433 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-23 23:23:36 +00:00
Bob Wilson
aabc6a9b79 Remove the hack to check UNAME_RELEASE when identifying the Darwin version.
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
2011-09-20 22:05:56 +00:00
Bill Wendling
544e4124fe Include limits.h to make sure PATH_MAX is known on Solaris 10.
Patch by Joakim Johansson!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139743 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-14 21:49:42 +00:00
Bob Wilson
21ab6c066d Clarify a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137204 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-10 05:02:22 +00:00