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remove some dead code
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26703 91177308-0d34-0410-b5e6-96231b3b80d8
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//===- lib/Debugger/FDHandle.cpp - File Descriptor Handle -----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source 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 a class for ensuring that Unix file handles get closed.
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//
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//===----------------------------------------------------------------------===//
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#include "FDHandle.h"
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#include <unistd.h>
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using namespace llvm;
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//===----------------------------------------------------------------------===//
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// FDHandle class implementation
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//
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FDHandle::~FDHandle() throw() {
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if (FD != -1)
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::close(FD);
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}
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FDHandle &FDHandle::operator=(int fd) throw() {
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if (FD != -1)
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::close(FD);
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FD = fd;
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return *this;
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}
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//===- lib/Debugger/FDHandle.h - File Descriptor Handle ---------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines a family of utility functions which are useful for doing
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// various things with files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LIB_DEBUGGER_FDHANDLE_H
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#define LIB_DEBUGGER_FDHANDLE_H
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#include "llvm/System/Path.h"
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namespace llvm {
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/// FDHandle - Simple handle class to make sure a file descriptor gets closed
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/// when the object is destroyed. This handle acts similarly to an
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/// std::auto_ptr, in that the copy constructor and assignment operators
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/// transfer ownership of the handle. This means that FDHandle's do not have
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/// value semantics.
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///
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class FDHandle {
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int FD;
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public:
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FDHandle() : FD(-1) {}
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FDHandle(int fd) : FD(fd) {}
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FDHandle(FDHandle &RHS) : FD(RHS.FD) {
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RHS.FD = -1; // Transfer ownership
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}
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~FDHandle() throw();
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/// get - Get the current file descriptor, without releasing ownership of it.
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int get() const { return FD; }
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operator int() const { return FD; }
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FDHandle &operator=(int fd) throw();
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FDHandle &operator=(FDHandle &RHS) {
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int fd = RHS.FD;
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RHS.FD = -1; // Transfer ownership
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return operator=(fd);
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}
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/// release - Take ownership of the file descriptor away from the FDHandle
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/// object, so that the file is not closed when the FDHandle is destroyed.
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int release() {
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int Ret = FD;
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FD = -1;
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return Ret;
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}
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};
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} // End llvm namespace
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#endif
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