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354 Commits

Author SHA1 Message Date
Michael J. Spencer 5ed2428b3c This is the first step in adding sane error handling support to LLVMSystem. 
The system API's will be shifted over to returning an error_code, and returning
other return values as out parameters to the function.

Code that needs to check error conditions will use the errc enum values which
are the same as the posix_errno defines (EBADF, E2BIG, etc...), and are
compatable with the error codes in WinError.h due to some magic in system_error.

An example would be:

if (error_code ec = KillEvil("Java")) { // error_code can be converted to bool.
  handle_error(ec);
}

llvm-svn: 119360
 2010-11-16 18:31:52 +00:00
Rafael Espindola 559b8fbffc Add method for checking if a path is a symbolic link. 
llvm-svn: 118367
 2010-11-07 04:36:50 +00:00
Dan Gohman a3bb142db6 Delete unused variables. 
llvm-svn: 118128
 2010-11-03 00:09:12 +00:00
Dan Gohman ecc4d73498 Remove several unhelpful checks for isValid from sys::Path. 
llvm-svn: 118127
 2010-11-03 00:01:23 +00:00
Dan Gohman c0a8bee4b0 Don't try to enforce MAXPATHLEN in sys::Path for Unix. OS's can check 
limits on their own.

llvm-svn: 118113
 2010-11-02 23:19:55 +00:00
Dan Gohman a8b6315cd7 Simplify. 
llvm-svn: 118110
 2010-11-02 23:16:26 +00:00
Dan Gohman 6e05d6c218 Fix a copy+pasto. 
llvm-svn: 118106
 2010-11-02 22:56:51 +00:00
Dan Gohman a47bfef1bf Avoid manipulating paths in fixed-sized arrays. 
llvm-svn: 118105
 2010-11-02 22:55:34 +00:00
Dan Gohman 32d51fa0b5 Simplify this code. 
llvm-svn: 118102
 2010-11-02 22:50:10 +00:00
Dan Gohman f6e13ceb2b Use '\0' instead of 0 for nul character constants. 
llvm-svn: 118096
 2010-11-02 22:41:19 +00:00
Mikhail Glushenkov 7282901079 appendSuffix: don't append a dot when the suffix is empty. 
Additionally, move the implementation of appendSuffix to Path.cpp: it is
platform-independent.

llvm-svn: 118089
 2010-11-02 22:18:37 +00:00
Dan Gohman 44e24e5403 Eliminate some temporary std::strings. 
llvm-svn: 118086
 2010-11-02 22:07:47 +00:00
Dan Gohman bba85850e3 Micro-optimize. 
llvm-svn: 118058
 2010-11-02 20:52:47 +00:00
Mikhail Glushenkov a581d8a27a Make FindProgramByName return paths with slashes unmodified on Windows. 
This makes its behaviour more consistent across platforms.

llvm-svn: 118048
 2010-11-02 20:32:39 +00:00
Mikhail Glushenkov fcfaf51e52 Path: Add GetEXESuffix() to complement GetDLLSuffix(). 
llvm-svn: 118042
 2010-11-02 20:32:26 +00:00
Dan Gohman 5bc07d2bce Check if ErrMsg is null. This fixes the "not" command. 
llvm-svn: 117666
 2010-10-29 17:20:42 +00:00
Dan Gohman fc81579b5e Make Program::Wait differentiate execution failure due to the file 
being not found from the file being not executable. 

llvm-svn: 117664
 2010-10-29 16:54:25 +00:00
Dan Gohman cae3c53b31 Make Program::Wait provide an error message string for errors 
executing the child process and abnormal child process termination.

llvm-svn: 117661
 2010-10-29 16:39:01 +00:00
Dan Gohman 47215f4e04 Revert r117582, which reverted r77396. Searching PATH for a string 
which contains slashes is inconsistent with the meaning of PATH on
Unix-type platforms, and pretty surprising.

If the user has given a specific path to execute and we can't
execute it, we should fail and say why.  (Apparently the new
posix_spawn code doesn't always say why, but that's a separate
issue.)

llvm-svn: 117596
 2010-10-28 20:34:33 +00:00
Mikhail Glushenkov d7faab5c95 Revert r77396. 
Original commit message:

    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.

It's better when behaviour is consistent between platforms. This change also
makes FindExecutable() behave as expected on unix-likes (before this commit, it
used to always succeed).

llvm-svn: 117582
 2010-10-28 19:32:58 +00:00
Mikhail Glushenkov 0e9d9b51eb Trailing whitespace. 
llvm-svn: 117581
 2010-10-28 19:32:53 +00:00
Daniel Dunbar cc0e18dd4a CrashRecovery: Fix raise() override to actually send the right signal, *cough*. 
llvm-svn: 116072
 2010-10-08 18:31:34 +00:00
Evan Cheng 139edad73a Correctly check if a path is a directory. Fix by Brian Korver. 
llvm-svn: 115991
 2010-10-07 22:05:57 +00:00
Daniel Dunbar 31158b583a Add an explicit initialization to work around what appears to be a valgrind 
false positive, at least on Darwin. I haven't filed this, but you can feel free.

llvm-svn: 115242
 2010-09-30 23:56:49 +00:00
Daniel Dunbar 18456f3d73 CrashRecovery/Darwin: Override raise() as well so that crash recovery doesn't 
end up altering the thread on which crashes are done because of its use of
Darwin's broken raise() implementation.

llvm-svn: 114558
 2010-09-22 17:46:10 +00:00
Dan Gohman d51b43181e Issue a #error if the host doesn't have an implementation for 
GetMainExecutable yet.

llvm-svn: 113240
 2010-09-07 18:26:49 +00:00
Dan Gohman 9e857449de Apply a patch from Kees van Reeuwijk to add support for Minix. 
Minix apparently doesn't like double-slash separators, and there's
no apparent need for them here.

llvm-svn: 112844
 2010-09-02 18:24:46 +00:00
Dan Gohman e201c07d23 Add an interface for unregistering a file from the FilesToRemove list. 
llvm-svn: 112705
 2010-09-01 14:17:34 +00:00
Anton Korobeynikov 4e7351d2ba Some fixes for NetBSD 
llvm-svn: 112662
 2010-08-31 22:38:00 +00:00
Daniel Dunbar f14d946379 CrashRecovery/Darwin: On Darwin, raise sends a signal to the main thread instead 
of the current thread. This has the unfortunate effect that assert() and abort()
will end up bypassing our crash recovery attempts. We work around this for
anything in the same linkage unit by just defining our own versions of the
assert handler and abort.

llvm-svn: 111583
 2010-08-19 23:45:39 +00:00
Dan Gohman 5cae103392 Eliminate unnecessary empty string literals. 
llvm-svn: 110183
 2010-08-04 01:39:08 +00:00
Owen Anderson cfc2a57fcd Add an erase() method to llvm::ThreadLocal. 
llvm-svn: 109686
 2010-07-28 22:49:43 +00:00
Duncan Sands 7a68cd094b Rather than using an ifdef on the target to zero out fields, 
just use memset to zero the entire struct.

llvm-svn: 108330
 2010-07-14 14:32:33 +00:00
Chris Lattner cda39c4ee4 improve Path::makeUnique when mkstemp/mktemp are not available 
patch by Lasse Kärkkäinen in PR7404.

llvm-svn: 108110
 2010-07-12 00:09:55 +00:00
Chris Lattner ca97c92eb4 add some triple for minix, patch by Kees van Reeuwijk from PR7582 
llvm-svn: 107785
 2010-07-07 15:52:27 +00:00
Dan Gohman 288999b829 Factor out the handler work from SignalHandler into a helper function, 
and change llvm::sys::RunInterruptHandlers to call that function directly
instead of calling SignalHandler, because the rest of SignalHandler
invokes side effects which aren't appropriate, including raising the
signal.

llvm-svn: 104896
 2010-05-27 23:11:55 +00:00
Dan Gohman 78d1e84521 Don't bother clearing the Magic string when the magic number 
can't be read, since it isn't cleared on other error paths.

llvm-svn: 104852
 2010-05-27 17:14:10 +00:00
Daniel Dunbar 68272566c6 Add llvm::sys::RunInterruptHandlers(), which runs the registered SIGINT cleanup 
stuff.

llvm-svn: 103333
 2010-05-08 02:10:34 +00:00
Dan Gohman b0071d041f This doesn't need SmallVector.h anymore. 
llvm-svn: 101790
 2010-04-19 17:51:31 +00:00
Dan Gohman 3457061a66 Fix this for std::vectors which don't have .data(). 
llvm-svn: 101785
 2010-04-19 16:33:28 +00:00
Dan Gohman f656397cc0 Fix -Wcast-qual warnings. 
llvm-svn: 101782
 2010-04-19 15:55:10 +00:00
Dan Gohman a84dc0cc6e Revert 91528 and use a std::vector instead, fixing an abuse of std::string. 
llvm-svn: 101781
 2010-04-19 15:54:44 +00:00
Chris Lattner d3db453d15 avoid temporary std::string in non posix_spawn path. 
llvm-svn: 101723
 2010-04-18 17:34:10 +00:00
Benjamin Kramer 5b4be748cb Eliminate temporary string. 
llvm-svn: 101711
 2010-04-18 09:19:41 +00:00
Benjamin Kramer 1360e9e270 Properly inherit the environment on darwin where environ is not available for shared libraries. 
llvm-svn: 101710
 2010-04-18 09:16:04 +00:00
Nick Lewycky 554a39889b This is horrible. Split the difference, and declare 'environ' on all non-Darwin 
platforms to unbreak the darwin and linux builds. The BSD folks should feel
free to change the #if, if this breaks them.

llvm-svn: 101703
 2010-04-18 07:07:48 +00:00
Nick Lewycky 320aa4a493 Revert r101701, Darwin doesn't have 'environ'. Go figure. 
llvm-svn: 101702
 2010-04-18 06:44:21 +00:00
Nick Lewycky 3fdf58800a Fix linux build. posix_spawn doesn't inherit the environment by default. 
llvm-svn: 101701
 2010-04-18 06:22:26 +00:00
Chris Lattner a50738abba make Program::Execute use posix_spawn on systems that support it, 
as it is more efficient than fork/exec.

Thanks to Eric for adding the autoconf check.  It would be nice if
a cmake guru could add a cmake check for posix_spawn as well.

llvm-svn: 101693
 2010-04-18 04:14:37 +00:00
Chris Lattner 3a747aef96 improve haiku portability, patch by Paul Davey. 
llvm-svn: 100933
 2010-04-10 17:54:51 +00:00