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Delete SlowOperationInformer, which is no longer used. 

llvm-svn: 111661
This commit is contained in:
Dan Gohman 2010-08-20 18:07:37 +00:00
parent 65b9f7b255
commit 12cbe696e4
3 changed files with 0 additions and 133 deletions
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1
llvm/include/llvm/LinkAllVMCore.h
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@ -33,7 +33,6 @@
#include "llvm/System/TimeValue.h" #include "llvm/System/TimeValue.h"
#include "llvm/Support/Dwarf.h" #include "llvm/Support/Dwarf.h"
#include "llvm/Support/MathExtras.h" #include "llvm/Support/MathExtras.h"
#include "llvm/Support/SlowOperationInformer.h"
#include <cstdlib> #include <cstdlib>
namespace { namespace {

65
llvm/include/llvm/Support/SlowOperationInformer.h
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@ -1,65 +0,0 @@
//===- llvm/Support/SlowOperationInformer.h - Keep user informed *- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines a simple object which can be used to let the user know what
// is going on when a slow operation is happening, and gives them the ability to
// cancel it. Potentially slow operations can stack allocate one of these
// objects, and periodically call the "progress" method to update the progress
// bar. If the operation takes more than 1 second to complete, the progress bar
// is automatically shown and updated. As such, the slow operation should not
// print stuff to the screen, and should not be confused if an extra line
// appears on the screen (ie, the cursor should be at the start of the line).
//
// If the user presses CTRL-C during the operation, the next invocation of the
// progress method return true indicating that the operation was cancelled.
//
// Because SlowOperationInformers fiddle around with signals, they cannot be
// nested, and interact poorly with threads. The SIGALRM handler is set back to
// SIGDFL, but the SIGINT signal handler is restored when the
// SlowOperationInformer is destroyed.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_SLOW_OPERATION_INFORMER_H
#define LLVM_SUPPORT_SLOW_OPERATION_INFORMER_H
#include <string>
#include <cassert>
#include "llvm/System/DataTypes.h"
namespace llvm {
class SlowOperationInformer {
std::string OperationName;
unsigned LastPrintAmount;
SlowOperationInformer(const SlowOperationInformer&); // DO NOT IMPLEMENT
void operator=(const SlowOperationInformer&); // DO NOT IMPLEMENT
public:
explicit SlowOperationInformer(const std::string &Name);
~SlowOperationInformer();
/// progress - Clients should periodically call this method when they can
/// handle cancellation. 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). If the user cancels the operation,
/// this returns true, false otherwise.
bool progress(unsigned Amount);
/// progress - Same as the method above, but this performs the division for
/// you, and helps you avoid overflow if you are dealing with largish
/// numbers.
bool progress(unsigned Current, unsigned Maximum) {
assert(Maximum != 0 &&
"Shouldn't be doing work if there is nothing to do!");
return progress(Current*uint64_t(1000UL)/Maximum);
}
};
} // end namespace llvm
#endif /* SLOW_OPERATION_INFORMER_H */

67
llvm/lib/Support/SlowOperationInformer.cpp
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@ -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;
}