mirror of
https://github.com/RPCS3/llvm.git
synced 2024-12-14 23:48:56 +00:00
edf128a7fa
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21420 91177308-0d34-0410-b5e6-96231b3b80d8
63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
//===- lib/Debugger/FDHandle.h - File Descriptor Handle ---------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines a family of utility functions which are useful for doing
|
|
// various things with files.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LIB_DEBUGGER_FDHANDLE_H
|
|
#define LIB_DEBUGGER_FDHANDLE_H
|
|
|
|
#include "llvm/System/Path.h"
|
|
|
|
namespace llvm {
|
|
|
|
/// FDHandle - Simple handle class to make sure a file descriptor gets closed
|
|
/// when the object is destroyed. This handle acts similarly to an
|
|
/// std::auto_ptr, in that the copy constructor and assignment operators
|
|
/// transfer ownership of the handle. This means that FDHandle's do not have
|
|
/// value semantics.
|
|
///
|
|
class FDHandle {
|
|
int FD;
|
|
public:
|
|
FDHandle() : FD(-1) {}
|
|
FDHandle(int fd) : FD(fd) {}
|
|
FDHandle(FDHandle &RHS) : FD(RHS.FD) {
|
|
RHS.FD = -1; // Transfer ownership
|
|
}
|
|
|
|
~FDHandle() throw();
|
|
|
|
/// get - Get the current file descriptor, without releasing ownership of it.
|
|
int get() const { return FD; }
|
|
operator int() const { return FD; }
|
|
|
|
FDHandle &operator=(int fd) throw();
|
|
|
|
FDHandle &operator=(FDHandle &RHS) {
|
|
int fd = RHS.FD;
|
|
RHS.FD = -1; // Transfer ownership
|
|
return operator=(fd);
|
|
}
|
|
|
|
/// release - Take ownership of the file descriptor away from the FDHandle
|
|
/// object, so that the file is not closed when the FDHandle is destroyed.
|
|
int release() {
|
|
int Ret = FD;
|
|
FD = -1;
|
|
return Ret;
|
|
}
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|