llvm-svn: 156239

 - Just use sys::Process::GetRandomNumber instead of having two poor
   implementations.
 - This is ~70 times (!) faster on my OS X machine.

llvm-svn: 156238

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

llvm-svn: 155354

Thanks to Pino Toscano for the patch

llvm-svn: 154500

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)

llvm-svn: 150197

Original commit message:
Support/FileSystem: Implement canonicalize.

llvm-svn: 146378

llvm-svn: 146364

llvm-svn: 146363

directory_iterator preserve InputIterator semantics on copy.

llvm-svn: 146200

Patch by Joakim Johansson!

llvm-svn: 139743

If true and 'model' parameter is not an absolute path, a temp directory will be prepended.
Make it true by default to match current behaviour.

llvm-svn: 136310

llvm-svn: 128218

llvm-svn: 128199

I have another way to achieve the same goal.

llvm-svn: 125239

llvm-svn: 125236

name of a path, after resolving symbolic links and eliminating excess
path elements such as "foo/../" and "./".

This routine still needs a Windows implementation, but I don't have a
Windows machine available. Help? Please?

llvm-svn: 125228

llvm-svn: 123604

llvm-svn: 123544

llvm-svn: 122879

via their return value instead of an out parameter.

llvm-svn: 121149

namespace. None of them return anything except for success anyway. These will be
converted to returning their result soon.

llvm-svn: 121109

that close or unlink set.

llvm-svn: 121094

the standard macros instead of octal notation.

llvm-svn: 121093

llvm-svn: 121092

llvm-svn: 121091

Unix bug spotted by Dan Gohman.

llvm-svn: 121090

llvm-svn: 120913

llvm-svn: 120870

llvm-svn: 120867

llvm-svn: 120827

llvm-svn: 120819

llvm-svn: 120818

llvm-svn: 120817

llvm-svn: 120800

llvm-svn: 120792

llvm-svn: 120790

llvm-svn: 120776

instead of toStringRef. The file system APIs need c strings.

llvm-svn: 120601

file creation APIs aren't implemented.

llvm-svn: 120593

llvm-svn: 120329