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eb66b33867
I did this a long time ago with a janky python script, but now clang-format has built-in support for this. I fed clang-format every line with a #include and let it re-sort things according to the precise LLVM rules for include ordering baked into clang-format these days. I've reverted a number of files where the results of sorting includes isn't healthy. Either places where we have legacy code relying on particular include ordering (where possible, I'll fix these separately) or where we have particular formatting around #include lines that I didn't want to disturb in this patch. This patch is *entirely* mechanical. If you get merge conflicts or anything, just ignore the changes in this patch and run clang-format over your #include lines in the files. Sorry for any noise here, but it is important to keep these things stable. I was seeing an increasing number of patches with irrelevant re-ordering of #include lines because clang-format was used. This patch at least isolates that churn, makes it easy to skip when resolving conflicts, and gets us to a clean baseline (again). llvm-svn: 304787
77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
//===- Errno.cpp - errno support --------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the errno wrappers.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/Errno.h"
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#include "llvm/Config/config.h" // Get autoconf configuration settings
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#include "llvm/Support/raw_ostream.h"
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#include <string.h>
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#if HAVE_ERRNO_H
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#include <errno.h>
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#endif
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//===----------------------------------------------------------------------===//
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//=== WARNING: Implementation here must contain only TRULY operating system
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//=== independent code.
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//===----------------------------------------------------------------------===//
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namespace llvm {
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namespace sys {
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#if HAVE_ERRNO_H
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std::string StrError() {
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return StrError(errno);
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}
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#endif // HAVE_ERRNO_H
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std::string StrError(int errnum) {
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std::string str;
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if (errnum == 0)
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return str;
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#if defined(HAVE_STRERROR_R) || HAVE_DECL_STRERROR_S
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const int MaxErrStrLen = 2000;
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char buffer[MaxErrStrLen];
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buffer[0] = '\0';
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#endif
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#ifdef HAVE_STRERROR_R
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// strerror_r is thread-safe.
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#if defined(__GLIBC__) && defined(_GNU_SOURCE)
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// glibc defines its own incompatible version of strerror_r
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// which may not use the buffer supplied.
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str = strerror_r(errnum, buffer, MaxErrStrLen - 1);
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#else
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strerror_r(errnum, buffer, MaxErrStrLen - 1);
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str = buffer;
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#endif
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#elif HAVE_DECL_STRERROR_S // "Windows Secure API"
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strerror_s(buffer, MaxErrStrLen - 1, errnum);
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str = buffer;
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#elif defined(HAVE_STRERROR)
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// Copy the thread un-safe result of strerror into
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// the buffer as fast as possible to minimize impact
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// of collision of strerror in multiple threads.
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str = strerror(errnum);
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#else
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// Strange that this system doesn't even have strerror
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// but, oh well, just use a generic message
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raw_string_ostream stream(str);
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stream << "Error #" << errnum;
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stream.flush();
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#endif
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return str;
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}
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} // namespace sys
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} // namespace llvm
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