diff options
| author | dim <dim@FreeBSD.org> | 2014-03-21 17:53:59 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2014-03-21 17:53:59 +0000 |
| commit | 9cedb8bb69b89b0f0c529937247a6a80cabdbaec (patch) | |
| tree | c978f0e9ec1ab92dc8123783f30b08a7fd1e2a39 /contrib/llvm/lib/Support/Unix/PathV2.inc | |
| parent | 03fdc2934eb61c44c049a02b02aa974cfdd8a0eb (diff) | |
| download | FreeBSD-src-9cedb8bb69b89b0f0c529937247a6a80cabdbaec.zip FreeBSD-src-9cedb8bb69b89b0f0c529937247a6a80cabdbaec.tar.gz | |
MFC 261991:
Upgrade our copy of llvm/clang to 3.4 release. This version supports
all of the features in the current working draft of the upcoming C++
standard, provisionally named C++1y.
The code generator's performance is greatly increased, and the loop
auto-vectorizer is now enabled at -Os and -O2 in addition to -O3. The
PowerPC backend has made several major improvements to code generation
quality and compile time, and the X86, SPARC, ARM32, Aarch64 and SystemZ
backends have all seen major feature work.
Release notes for llvm and clang can be found here:
<http://llvm.org/releases/3.4/docs/ReleaseNotes.html>
<http://llvm.org/releases/3.4/tools/clang/docs/ReleaseNotes.html>
MFC 262121 (by emaste):
Update lldb for clang/llvm 3.4 import
This commit largely restores the lldb source to the upstream r196259
snapshot with the addition of threaded inferior support and a few bug
fixes.
Specific upstream lldb revisions restored include:
SVN git
181387 779e6ac
181703 7bef4e2
182099 b31044e
182650 f2dcf35
182683 0d91b80
183862 15c1774
183929 99447a6
184177 0b2934b
184948 4dc3761
184954 007e7bc
186990 eebd175
Sponsored by: DARPA, AFRL
MFC 262186 (by emaste):
Fix mismerge in r262121
A break statement was lost in the merge. The error had no functional
impact, but restore it to reduce the diff against upstream.
MFC 262303:
Pull in r197521 from upstream clang trunk (by rdivacky):
Use the integrated assembler by default on FreeBSD/ppc and ppc64.
Requested by: jhibbits
MFC 262611:
Pull in r196874 from upstream llvm trunk:
Fix a crash that occurs when PWD is invalid.
MCJIT needs to be able to run in hostile environments, even when PWD
is invalid. There's no need to crash MCJIT in this case.
The obvious fix is to simply leave MCContext's CompilationDir empty
when PWD can't be determined. This way, MCJIT clients,
and other clients that link with LLVM don't need a valid working directory.
If we do want to guarantee valid CompilationDir, that should be done
only for clients of getCompilationDir(). This is as simple as checking
for an empty string.
The only current use of getCompilationDir is EmitGenDwarfInfo, which
won't conceivably run with an invalid working dir. However, in the
purely hypothetically and untestable case that this happens, the
AT_comp_dir will be omitted from the compilation_unit DIE.
This should help fix assertions occurring with ports-mgmt/tinderbox,
when it is using jails, and sometimes invalidates clang's current
working directory.
Reported by: decke
MFC 262809:
Pull in r203007 from upstream clang trunk:
Don't produce an alias between destructors with different calling conventions.
Fixes pr19007.
(Please note that is an LLVM PR identifier, not a FreeBSD one.)
This should fix Firefox and/or libxul crashes (due to problems with
regparm/stdcall calling conventions) on i386.
Reported by: multiple users on freebsd-current
PR: bin/187103
MFC 263048:
Repair recognition of "CC" as an alias for the C++ compiler, since it
was silently broken by upstream for a Windows-specific use-case.
Apparently some versions of CMake still rely on this archaic feature...
Reported by: rakuco
MFC 263049:
Garbage collect the old way of adding the libstdc++ include directories
in clang's InitHeaderSearch.cpp. This has been superseded by David
Chisnall's commit in r255321.
Moreover, if libc++ is used, the libstdc++ include directories should
not be in the search path at all. These directories are now only used
if you pass -stdlib=libstdc++.
Diffstat (limited to 'contrib/llvm/lib/Support/Unix/PathV2.inc')
| -rw-r--r-- | contrib/llvm/lib/Support/Unix/PathV2.inc | 693 |
1 files changed, 0 insertions, 693 deletions
diff --git a/contrib/llvm/lib/Support/Unix/PathV2.inc b/contrib/llvm/lib/Support/Unix/PathV2.inc deleted file mode 100644 index 7e0aead..0000000 --- a/contrib/llvm/lib/Support/Unix/PathV2.inc +++ /dev/null @@ -1,693 +0,0 @@ -//===- llvm/Support/Unix/PathV2.cpp - Unix Path Implementation --*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements the Unix specific implementation of the PathV2 API. -// -//===----------------------------------------------------------------------===// - -//===----------------------------------------------------------------------===// -//=== WARNING: Implementation here must contain only generic UNIX code that -//=== is guaranteed to work on *all* UNIX variants. -//===----------------------------------------------------------------------===// - -#include "Unix.h" -#include "llvm/Support/Process.h" -#if HAVE_SYS_STAT_H -#include <sys/stat.h> -#endif -#if HAVE_FCNTL_H -#include <fcntl.h> -#endif -#ifdef HAVE_SYS_MMAN_H -#include <sys/mman.h> -#endif -#if HAVE_DIRENT_H -# include <dirent.h> -# define NAMLEN(dirent) strlen((dirent)->d_name) -#else -# define dirent direct -# define NAMLEN(dirent) (dirent)->d_namlen -# if HAVE_SYS_NDIR_H -# include <sys/ndir.h> -# endif -# if HAVE_SYS_DIR_H -# include <sys/dir.h> -# endif -# if HAVE_NDIR_H -# include <ndir.h> -# endif -#endif -#if HAVE_STDIO_H -#include <stdio.h> -#endif -#if HAVE_LIMITS_H -#include <limits.h> -#endif - -// Both stdio.h and cstdio are included via different pathes and -// stdcxx's cstdio doesn't include stdio.h, so it doesn't #undef the macros -// either. -#undef ferror -#undef feof - -// For GNU Hurd -#if defined(__GNU__) && !defined(PATH_MAX) -# define PATH_MAX 4096 -#endif - -using namespace llvm; - -namespace { - /// This class automatically closes the given file descriptor when it goes out - /// of scope. You can take back explicit ownership of the file descriptor by - /// calling take(). The destructor does not verify that close was successful. - /// Therefore, never allow this class to call close on a file descriptor that - /// has been read from or written to. - struct AutoFD { - int FileDescriptor; - - AutoFD(int fd) : FileDescriptor(fd) {} - ~AutoFD() { - if (FileDescriptor >= 0) - ::close(FileDescriptor); - } - - int take() { - int ret = FileDescriptor; - FileDescriptor = -1; - return ret; - } - - operator int() const {return FileDescriptor;} - }; - - error_code TempDir(SmallVectorImpl<char> &result) { - // FIXME: Don't use TMPDIR if program is SUID or SGID enabled. - const char *dir = 0; - (dir = std::getenv("TMPDIR" )) || - (dir = std::getenv("TMP" )) || - (dir = std::getenv("TEMP" )) || - (dir = std::getenv("TEMPDIR")) || -#ifdef P_tmpdir - (dir = P_tmpdir) || -#endif - (dir = "/tmp"); - - result.clear(); - StringRef d(dir); - result.append(d.begin(), d.end()); - return error_code::success(); - } -} - -namespace llvm { -namespace sys { -namespace fs { - -error_code current_path(SmallVectorImpl<char> &result) { -#ifdef MAXPATHLEN - result.reserve(MAXPATHLEN); -#else -// For GNU Hurd - result.reserve(1024); -#endif - - while (true) { - if (::getcwd(result.data(), result.capacity()) == 0) { - // See if there was a real error. - if (errno != errc::not_enough_memory) - return error_code(errno, system_category()); - // Otherwise there just wasn't enough space. - result.reserve(result.capacity() * 2); - } else - break; - } - - result.set_size(strlen(result.data())); - return error_code::success(); -} - -error_code copy_file(const Twine &from, const Twine &to, copy_option copt) { - // Get arguments. - SmallString<128> from_storage; - SmallString<128> to_storage; - StringRef f = from.toNullTerminatedStringRef(from_storage); - StringRef t = to.toNullTerminatedStringRef(to_storage); - - const size_t buf_sz = 32768; - char buffer[buf_sz]; - int from_file = -1, to_file = -1; - - // Open from. - if ((from_file = ::open(f.begin(), O_RDONLY)) < 0) - return error_code(errno, system_category()); - AutoFD from_fd(from_file); - - // Stat from. - struct stat from_stat; - if (::stat(f.begin(), &from_stat) != 0) - return error_code(errno, system_category()); - - // Setup to flags. - int to_flags = O_CREAT | O_WRONLY; - if (copt == copy_option::fail_if_exists) - to_flags |= O_EXCL; - - // Open to. - if ((to_file = ::open(t.begin(), to_flags, from_stat.st_mode)) < 0) - return error_code(errno, system_category()); - AutoFD to_fd(to_file); - - // Copy! - ssize_t sz, sz_read = 1, sz_write; - while (sz_read > 0 && - (sz_read = ::read(from_fd, buffer, buf_sz)) > 0) { - // Allow for partial writes - see Advanced Unix Programming (2nd Ed.), - // Marc Rochkind, Addison-Wesley, 2004, page 94 - sz_write = 0; - do { - if ((sz = ::write(to_fd, buffer + sz_write, sz_read - sz_write)) < 0) { - sz_read = sz; // cause read loop termination. - break; // error. - } - sz_write += sz; - } while (sz_write < sz_read); - } - - // After all the file operations above the return value of close actually - // matters. - if (::close(from_fd.take()) < 0) sz_read = -1; - if (::close(to_fd.take()) < 0) sz_read = -1; - - // Check for errors. - if (sz_read < 0) - return error_code(errno, system_category()); - - return error_code::success(); -} - -error_code create_directory(const Twine &path, bool &existed) { - SmallString<128> path_storage; - StringRef p = path.toNullTerminatedStringRef(path_storage); - - if (::mkdir(p.begin(), S_IRWXU | S_IRWXG) == -1) { - if (errno != errc::file_exists) - return error_code(errno, system_category()); - existed = true; - } else - existed = false; - - return error_code::success(); -} - -error_code create_hard_link(const Twine &to, const Twine &from) { - // Get arguments. - SmallString<128> from_storage; - SmallString<128> to_storage; - StringRef f = from.toNullTerminatedStringRef(from_storage); - StringRef t = to.toNullTerminatedStringRef(to_storage); - - if (::link(t.begin(), f.begin()) == -1) - return error_code(errno, system_category()); - - return error_code::success(); -} - -error_code create_symlink(const Twine &to, const Twine &from) { - // Get arguments. - SmallString<128> from_storage; - SmallString<128> to_storage; - StringRef f = from.toNullTerminatedStringRef(from_storage); - StringRef t = to.toNullTerminatedStringRef(to_storage); - - if (::symlink(t.begin(), f.begin()) == -1) - return error_code(errno, system_category()); - - return error_code::success(); -} - -error_code remove(const Twine &path, bool &existed) { - SmallString<128> path_storage; - StringRef p = path.toNullTerminatedStringRef(path_storage); - - if (::remove(p.begin()) == -1) { - if (errno != errc::no_such_file_or_directory) - return error_code(errno, system_category()); - existed = false; - } else - existed = true; - - return error_code::success(); -} - -error_code rename(const Twine &from, const Twine &to) { - // Get arguments. - SmallString<128> from_storage; - SmallString<128> to_storage; - StringRef f = from.toNullTerminatedStringRef(from_storage); - StringRef t = to.toNullTerminatedStringRef(to_storage); - - if (::rename(f.begin(), t.begin()) == -1) { - // If it's a cross device link, copy then delete, otherwise return the error - if (errno == EXDEV) { - if (error_code ec = copy_file(from, to, copy_option::overwrite_if_exists)) - return ec; - bool Existed; - if (error_code ec = remove(from, Existed)) - return ec; - } else - return error_code(errno, system_category()); - } - - return error_code::success(); -} - -error_code resize_file(const Twine &path, uint64_t size) { - SmallString<128> path_storage; - StringRef p = path.toNullTerminatedStringRef(path_storage); - - if (::truncate(p.begin(), size) == -1) - return error_code(errno, system_category()); - - return error_code::success(); -} - -error_code exists(const Twine &path, bool &result) { - SmallString<128> path_storage; - StringRef p = path.toNullTerminatedStringRef(path_storage); - - if (::access(p.begin(), F_OK) == -1) { - if (errno != errc::no_such_file_or_directory) - return error_code(errno, system_category()); - result = false; - } else - result = true; - - return error_code::success(); -} - -bool equivalent(file_status A, file_status B) { - assert(status_known(A) && status_known(B)); - return A.fs_st_dev == B.fs_st_dev && - A.fs_st_ino == B.fs_st_ino; -} - -error_code equivalent(const Twine &A, const Twine &B, bool &result) { - file_status fsA, fsB; - if (error_code ec = status(A, fsA)) return ec; - if (error_code ec = status(B, fsB)) return ec; - result = equivalent(fsA, fsB); - return error_code::success(); -} - -error_code file_size(const Twine &path, uint64_t &result) { - SmallString<128> path_storage; - StringRef p = path.toNullTerminatedStringRef(path_storage); - - struct stat status; - if (::stat(p.begin(), &status) == -1) - return error_code(errno, system_category()); - if (!S_ISREG(status.st_mode)) - return make_error_code(errc::operation_not_permitted); - - result = status.st_size; - return error_code::success(); -} - -error_code status(const Twine &path, file_status &result) { - SmallString<128> path_storage; - StringRef p = path.toNullTerminatedStringRef(path_storage); - - struct stat status; - if (::stat(p.begin(), &status) != 0) { - error_code ec(errno, system_category()); - if (ec == errc::no_such_file_or_directory) - result = file_status(file_type::file_not_found); - else - result = file_status(file_type::status_error); - return ec; - } - - perms prms = static_cast<perms>(status.st_mode & perms_mask); - - if (S_ISDIR(status.st_mode)) - result = file_status(file_type::directory_file, prms); - else if (S_ISREG(status.st_mode)) - result = file_status(file_type::regular_file, prms); - else if (S_ISBLK(status.st_mode)) - result = file_status(file_type::block_file, prms); - else if (S_ISCHR(status.st_mode)) - result = file_status(file_type::character_file, prms); - else if (S_ISFIFO(status.st_mode)) - result = file_status(file_type::fifo_file, prms); - else if (S_ISSOCK(status.st_mode)) - result = file_status(file_type::socket_file, prms); - else - result = file_status(file_type::type_unknown, prms); - - result.fs_st_dev = status.st_dev; - result.fs_st_ino = status.st_ino; - - return error_code::success(); -} - -// Modifies permissions on a file. -error_code permissions(const Twine &path, perms prms) { - if ((prms & add_perms) && (prms & remove_perms)) - llvm_unreachable("add_perms and remove_perms are mutually exclusive"); - - // Get current permissions - file_status info; - if (error_code ec = status(path, info)) { - return ec; - } - - // Set updated permissions. - SmallString<128> path_storage; - StringRef p = path.toNullTerminatedStringRef(path_storage); - perms permsToSet; - if (prms & add_perms) { - permsToSet = (info.permissions() | prms) & perms_mask; - } else if (prms & remove_perms) { - permsToSet = (info.permissions() & ~prms) & perms_mask; - } else { - permsToSet = prms & perms_mask; - } - if (::chmod(p.begin(), static_cast<mode_t>(permsToSet))) { - return error_code(errno, system_category()); - } - - return error_code::success(); -} - -// Since this is most often used for temporary files, mode defaults to 0600. -error_code unique_file(const Twine &model, int &result_fd, - SmallVectorImpl<char> &result_path, - bool makeAbsolute, unsigned mode) { - SmallString<128> Model; - model.toVector(Model); - // Null terminate. - Model.c_str(); - - if (makeAbsolute) { - // Make model absolute by prepending a temp directory if it's not already. - bool absolute = path::is_absolute(Twine(Model)); - if (!absolute) { - SmallString<128> TDir; - if (error_code ec = TempDir(TDir)) return ec; - path::append(TDir, Twine(Model)); - Model.swap(TDir); - } - } - - // From here on, DO NOT modify model. It may be needed if the randomly chosen - // path already exists. - SmallString<128> RandomPath = Model; - -retry_random_path: - // Replace '%' with random chars. - for (unsigned i = 0, e = Model.size(); i != e; ++i) { - if (Model[i] == '%') - RandomPath[i] = "0123456789abcdef"[sys::Process::GetRandomNumber() & 15]; - } - - // Make sure we don't fall into an infinite loop by constantly trying - // to create the parent path. - bool TriedToCreateParent = false; - - // Try to open + create the file. -rety_open_create: - int RandomFD = ::open(RandomPath.c_str(), O_RDWR | O_CREAT | O_EXCL, mode); - if (RandomFD == -1) { - int SavedErrno = errno; - // If the file existed, try again, otherwise, error. - if (SavedErrno == errc::file_exists) - goto retry_random_path; - // If path prefix doesn't exist, try to create it. - if (SavedErrno == errc::no_such_file_or_directory && !TriedToCreateParent) { - TriedToCreateParent = true; - StringRef p(RandomPath); - SmallString<64> dir_to_create; - for (path::const_iterator i = path::begin(p), - e = --path::end(p); i != e; ++i) { - path::append(dir_to_create, *i); - bool Exists; - if (error_code ec = exists(Twine(dir_to_create), Exists)) return ec; - if (!Exists) { - // Don't try to create network paths. - if (i->size() > 2 && (*i)[0] == '/' && - (*i)[1] == '/' && - (*i)[2] != '/') - return make_error_code(errc::no_such_file_or_directory); - if (::mkdir(dir_to_create.c_str(), 0700) == -1 && - errno != errc::file_exists) - return error_code(errno, system_category()); - } - } - goto rety_open_create; - } - - return error_code(SavedErrno, system_category()); - } - - // Make the path absolute. - char real_path_buff[PATH_MAX + 1]; - if (realpath(RandomPath.c_str(), real_path_buff) == NULL) { - int error = errno; - ::close(RandomFD); - ::unlink(RandomPath.c_str()); - return error_code(error, system_category()); - } - - result_path.clear(); - StringRef d(real_path_buff); - result_path.append(d.begin(), d.end()); - - result_fd = RandomFD; - return error_code::success(); -} - -error_code mapped_file_region::init(int FD, bool CloseFD, uint64_t Offset) { - AutoFD ScopedFD(FD); - if (!CloseFD) - ScopedFD.take(); - - // Figure out how large the file is. - struct stat FileInfo; - if (fstat(FD, &FileInfo) == -1) - return error_code(errno, system_category()); - uint64_t FileSize = FileInfo.st_size; - - if (Size == 0) - Size = FileSize; - else if (FileSize < Size) { - // We need to grow the file. - if (ftruncate(FD, Size) == -1) - return error_code(errno, system_category()); - } - - int flags = (Mode == readwrite) ? MAP_SHARED : MAP_PRIVATE; - int prot = (Mode == readonly) ? PROT_READ : (PROT_READ | PROT_WRITE); -#ifdef MAP_FILE - flags |= MAP_FILE; -#endif - Mapping = ::mmap(0, Size, prot, flags, FD, Offset); - if (Mapping == MAP_FAILED) - return error_code(errno, system_category()); - return error_code::success(); -} - -mapped_file_region::mapped_file_region(const Twine &path, - mapmode mode, - uint64_t length, - uint64_t offset, - error_code &ec) - : Mode(mode) - , Size(length) - , Mapping() { - // Make sure that the requested size fits within SIZE_T. - if (length > std::numeric_limits<size_t>::max()) { - ec = make_error_code(errc::invalid_argument); - return; - } - - SmallString<128> path_storage; - StringRef name = path.toNullTerminatedStringRef(path_storage); - int oflags = (mode == readonly) ? O_RDONLY : O_RDWR; - int ofd = ::open(name.begin(), oflags); - if (ofd == -1) { - ec = error_code(errno, system_category()); - return; - } - - ec = init(ofd, true, offset); - if (ec) - Mapping = 0; -} - -mapped_file_region::mapped_file_region(int fd, - bool closefd, - mapmode mode, - uint64_t length, - uint64_t offset, - error_code &ec) - : Mode(mode) - , Size(length) - , Mapping() { - // Make sure that the requested size fits within SIZE_T. - if (length > std::numeric_limits<size_t>::max()) { - ec = make_error_code(errc::invalid_argument); - return; - } - - ec = init(fd, closefd, offset); - if (ec) - Mapping = 0; -} - -mapped_file_region::~mapped_file_region() { - if (Mapping) - ::munmap(Mapping, Size); -} - -#if LLVM_HAS_RVALUE_REFERENCES -mapped_file_region::mapped_file_region(mapped_file_region &&other) - : Mode(other.Mode), Size(other.Size), Mapping(other.Mapping) { - other.Mapping = 0; -} -#endif - -mapped_file_region::mapmode mapped_file_region::flags() const { - assert(Mapping && "Mapping failed but used anyway!"); - return Mode; -} - -uint64_t mapped_file_region::size() const { - assert(Mapping && "Mapping failed but used anyway!"); - return Size; -} - -char *mapped_file_region::data() const { - assert(Mapping && "Mapping failed but used anyway!"); - assert(Mode != readonly && "Cannot get non const data for readonly mapping!"); - return reinterpret_cast<char*>(Mapping); -} - -const char *mapped_file_region::const_data() const { - assert(Mapping && "Mapping failed but used anyway!"); - return reinterpret_cast<const char*>(Mapping); -} - -int mapped_file_region::alignment() { - return process::get_self()->page_size(); -} - -error_code detail::directory_iterator_construct(detail::DirIterState &it, - StringRef path){ - SmallString<128> path_null(path); - DIR *directory = ::opendir(path_null.c_str()); - if (directory == 0) - return error_code(errno, system_category()); - - it.IterationHandle = reinterpret_cast<intptr_t>(directory); - // Add something for replace_filename to replace. - path::append(path_null, "."); - it.CurrentEntry = directory_entry(path_null.str()); - return directory_iterator_increment(it); -} - -error_code detail::directory_iterator_destruct(detail::DirIterState &it) { - if (it.IterationHandle) - ::closedir(reinterpret_cast<DIR *>(it.IterationHandle)); - it.IterationHandle = 0; - it.CurrentEntry = directory_entry(); - return error_code::success(); -} - -error_code detail::directory_iterator_increment(detail::DirIterState &it) { - errno = 0; - dirent *cur_dir = ::readdir(reinterpret_cast<DIR *>(it.IterationHandle)); - if (cur_dir == 0 && errno != 0) { - return error_code(errno, system_category()); - } else if (cur_dir != 0) { - StringRef name(cur_dir->d_name, NAMLEN(cur_dir)); - if ((name.size() == 1 && name[0] == '.') || - (name.size() == 2 && name[0] == '.' && name[1] == '.')) - return directory_iterator_increment(it); - it.CurrentEntry.replace_filename(name); - } else - return directory_iterator_destruct(it); - - return error_code::success(); -} - -error_code get_magic(const Twine &path, uint32_t len, - SmallVectorImpl<char> &result) { - SmallString<128> PathStorage; - StringRef Path = path.toNullTerminatedStringRef(PathStorage); - result.set_size(0); - - // Open path. - std::FILE *file = std::fopen(Path.data(), "rb"); - if (file == 0) - return error_code(errno, system_category()); - - // Reserve storage. - result.reserve(len); - - // Read magic! - size_t size = std::fread(result.data(), 1, len, file); - if (std::ferror(file) != 0) { - std::fclose(file); - return error_code(errno, system_category()); - } else if (size != result.size()) { - if (std::feof(file) != 0) { - std::fclose(file); - result.set_size(size); - return make_error_code(errc::value_too_large); - } - } - std::fclose(file); - result.set_size(len); - return error_code::success(); -} - -error_code map_file_pages(const Twine &path, off_t file_offset, size_t size, - bool map_writable, void *&result) { - SmallString<128> path_storage; - StringRef name = path.toNullTerminatedStringRef(path_storage); - int oflags = map_writable ? O_RDWR : O_RDONLY; - int ofd = ::open(name.begin(), oflags); - if ( ofd == -1 ) - return error_code(errno, system_category()); - AutoFD fd(ofd); - int flags = map_writable ? MAP_SHARED : MAP_PRIVATE; - int prot = map_writable ? (PROT_READ|PROT_WRITE) : PROT_READ; -#ifdef MAP_FILE - flags |= MAP_FILE; -#endif - result = ::mmap(0, size, prot, flags, fd, file_offset); - if (result == MAP_FAILED) { - return error_code(errno, system_category()); - } - - return error_code::success(); -} - -error_code unmap_file_pages(void *base, size_t size) { - if ( ::munmap(base, size) == -1 ) - return error_code(errno, system_category()); - - return error_code::success(); -} - - -} // end namespace fs -} // end namespace sys -} // end namespace llvm |
