Delete SlowOperationInformer, which is no longer used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111661 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Support/SlowOperationInformer.cpp

@@ -1,67 +0,0 @@
-//===-- SlowOperationInformer.cpp - Keep the user informed ----------------===//
-//
-//                     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 SlowOperationInformer class for the LLVM debugger.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Support/SlowOperationInformer.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Alarm.h"
-#include <sstream>
-#include <cassert>
-using namespace llvm;
-
-SlowOperationInformer::SlowOperationInformer(const std::string &Name)
-  : OperationName(Name), LastPrintAmount(0) {
-  sys::SetupAlarm(1);
-}
-
-SlowOperationInformer::~SlowOperationInformer() {
-  sys::TerminateAlarm();
-  if (LastPrintAmount) {
-    // If we have printed something, make _sure_ we print the 100% amount, and
-    // also print a newline.
-    outs() << std::string(LastPrintAmount, '\b') << "Progress "
-           << OperationName << ": 100%  \n";
-  }
-}
-
-/// progress - Clients should periodically call this method when they are in
-/// an exception-safe state.  The Amount variable should indicate how far
-/// along the operation is, given in 1/10ths of a percent (in other words,
-/// Amount should range from 0 to 1000).
-bool SlowOperationInformer::progress(unsigned Amount) {
-  int status = sys::AlarmStatus();
-  if (status == -1) {
-    outs() << "\n";
-    LastPrintAmount = 0;
-    return true;
-  }
-
-  // If we haven't spent enough time in this operation to warrant displaying the
-  // progress bar, don't do so yet.
-  if (status == 0)
-    return false;
-
-  // Delete whatever we printed last time.
-  std::string ToPrint = std::string(LastPrintAmount, '\b');
-
-  std::ostringstream OS;
-  OS << "Progress " << OperationName << ": " << Amount/10;
-  if (unsigned Rem = Amount % 10)
-    OS << "." << Rem << "%";
-  else
-    OS << "%  ";
-
-  LastPrintAmount = OS.str().size();
-  outs() << ToPrint+OS.str();
-  outs().flush();
-  return false;
-}