llvm-svn: 178420

Clients of MemoryBuffer::getOpenFile expect it not to take ownership of the file
descriptor passed in. So don't.

llvm-svn: 176995

This gives us memory mapped file I/O on Windows.

llvm-svn: 176886

The sys::fs::is_directory() check is unnecessary because, if the filename is
a directory, the function will fail anyway with the same error code returned.
Remove the check to avoid an unnecessary stat call.

Someone needs to review on windows and see if the check is necessary there or not.

llvm-svn: 176386

which uses it. This is not ideal, but it ought to at least restore the
behavior to what it was before.

llvm-svn: 175571

character devices.

llvm-svn: 175549

/dev/stdin as an input when stdin is connected to a tty, for example.

No test, because it's difficult to write a reasonably portable test
for this. /dev/stdin isn't a character device when stdin is redirected
from a file or connected to a pipe.

llvm-svn: 175542

users over to the new one. No sense maintaining this "compatibility"
layer it seems.

llvm-svn: 171331

Sooooo many of these had incorrect or strange main module includes.
I have manually inspected all of these, and fixed the main module
include to be the nearest plausible thing I could find. If you own or
care about any of these source files, I encourage you to take some time
and check that these edits were sensible. I can't have broken anything
(I strictly added headers, and reordered them, never removed), but they
may not be the headers you'd really like to identify as containing the
API being implemented.

Many forward declarations and missing includes were added to a header
files to allow them to parse cleanly when included first. The main
module rule does in fact have its merits. =]

llvm-svn: 169131

llvm-svn: 167467

 - We only support this when the client didn't claim to know the file size.

llvm-svn: 167407

llvm-svn: 164471

file buffer is null-terminated.

If the file is smaller than we thought, mmap will not allow dereferencing
past the pages that are enough to cover the actual file size,
even though we asked for a larger address range.

rdar://11612916

llvm-svn: 160075

llvm-svn: 158844

llvm-svn: 158841

the caller requested a null-terminated one.

When mapping the file there could be a racing issue that resulted in the file being larger
than the FileSize passed by the caller. We already have an assertion
for this in MemoryBuffer::init() but have a runtime guarantee that
the buffer will be null-terminated, so do a copy that adds a null-terminator.

Protects against crash of rdar://11161822.

llvm-svn: 154082

if the passed in FileSize is inaccurate.

rdar://11034179

llvm-svn: 152662

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

llvm-svn: 145061

This was put in because in a certain version of DragonFlyBSD stat(2) lied about the
size of some files. This was fixed a long time ago so we can remove the workaround.

llvm-svn: 145059

Remove unused include of sys/uio.h in MemoryBuffer.cpp. It was not correctly protected by ifdef either.

llvm-svn: 142623

gold plugin is built with Large File Support (sizeof(off_t) == 64 on i686)
and the rest of LLVM is built w/o Large File Support
(sizeof(off_t) == 32 on i686) which corrupts the stack.

llvm-svn: 139873

llvm-svn: 131829

Add MemoryBuffer::getBufferKind() to report whether a memory buffer uses malloc'ed or mmap'ed memory.  This is for performance analysis.

llvm-svn: 130432

llvm-svn: 128098

llvm-svn: 127853

instead of copying.

llvm-svn: 127835

llvm-svn: 127426

llvm-svn: 127417

llvm-svn: 127413

support for creating buffers that cover only a part of a file.

llvm-svn: 127409

MemoryBuffer::getOpenFile to not close the file descriptor.

llvm-svn: 125128

llvm-svn: 122193

llvm-svn: 121958

llvm-svn: 121379

llvm-svn: 120298

file descriptor into a MemoryBuffer (and closes the FD).

llvm-svn: 120065

documented and only used by some clang stuff I just removed.

llvm-svn: 120002

llvm-svn: 106856

llvm-svn: 106841