Support: Remove Alarm. It is unused (via local grep and google code search).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121160 91177308-0d34-0410-b5e6-96231b3b80d8

5 files changed, 0 insertions, 202 deletions

diff --git a/include/llvm/Support/Alarm.h b/include/llvm/Support/Alarm.h
deleted file mode 100644
index 51eaf2c845..0000000000
--- a/include/llvm/Support/Alarm.h
+++ /dev/null
@@ -1,51 +0,0 @@
-//===- llvm/Support/Alarm.h - Alarm Generation support  ----------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file provides an operating system independent interface to alarm(2)
-// type functionality. The Alarm class allows a one-shot alarm to be set up
-// at some number of seconds in the future. When the alarm triggers, a method
-// is called to process the event
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_SYSTEM_ALARM_H
-#define LLVM_SYSTEM_ALARM_H
-
-namespace llvm {
-namespace sys {
-
-  /// This function registers an alarm to trigger some number of \p seconds in
-  /// the future. When that time arrives, the AlarmStatus function will begin
-  /// to return 1 instead of 0. The user must poll the status of the alarm by
-  /// making occasional calls to AlarmStatus. If the user sends an interrupt
-  /// signal, AlarmStatus will begin returning -1, even if the alarm event
-  /// occurred.
-  /// @returns nothing
-  void SetupAlarm(
-    unsigned seconds ///< Number of seconds in future when alarm arrives
-  );
-
-  /// This function terminates the alarm previously set up
-  /// @returns nothing
-  void TerminateAlarm();
-
-  /// This function acquires the status of the alarm.
-  /// @returns -1=cancelled, 0=untriggered, 1=triggered
-  int AlarmStatus();
-
-  /// Sleep for n seconds. Warning: mixing calls to Sleep() and other *Alarm
-  /// calls may be a bad idea on some platforms (source: Linux man page).
-  /// @returns nothing.
-  void Sleep(unsigned n);
-
-
-} // End sys namespace
-} // End llvm namespace
-
-#endif
diff --git a/lib/Support/Alarm.cpp b/lib/Support/Alarm.cpp
deleted file mode 100644
index 58ad609cd2..0000000000
--- a/lib/Support/Alarm.cpp
+++ /dev/null
@@ -1,33 +0,0 @@
-//===- Alarm.cpp - Alarm Generation Support ---------------------*- C++ -*-===//
-//
-//                     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 Alarm functionality
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Support/Alarm.h"
-#include "llvm/Config/config.h"
-
-namespace llvm {
-using namespace sys;
-
-//===----------------------------------------------------------------------===//
-//=== WARNING: Implementation here must contain only TRULY operating system
-//===          independent code.
-//===----------------------------------------------------------------------===//
-
-}
-
-// Include the platform-specific parts of this class.
-#ifdef LLVM_ON_UNIX
-#include "Unix/Alarm.inc"
-#endif
-#ifdef LLVM_ON_WIN32
-#include "Windows/Alarm.inc"
-#endif
diff --git a/lib/Support/CMakeLists.txt b/lib/Support/CMakeLists.txt
index a64a18836b..1edd052bbb 100644
--- a/lib/Support/CMakeLists.txt
+++ b/lib/Support/CMakeLists.txt
@@ -54,7 +54,6 @@ add_llvm_library(LLVMSupport
   regstrlcpy.c
 
 # System
-  Alarm.cpp
   Atomic.cpp
   Disassembler.cpp
   DynamicLibrary.cpp
@@ -75,7 +74,6 @@ add_llvm_library(LLVMSupport
   Threading.cpp
   TimeValue.cpp
   Valgrind.cpp
-  Unix/Alarm.inc
   Unix/Host.inc
   Unix/Memory.inc
   Unix/Mutex.inc
@@ -88,7 +86,6 @@ add_llvm_library(LLVMSupport
   Unix/system_error.inc
   Unix/ThreadLocal.inc
   Unix/TimeValue.inc
-  Windows/Alarm.inc
   Windows/DynamicLibrary.inc
   Windows/Host.inc
   Windows/Memory.inc
diff --git a/lib/Support/Unix/Alarm.inc b/lib/Support/Unix/Alarm.inc
deleted file mode 100644
index fb42b6c65d..0000000000
--- a/lib/Support/Unix/Alarm.inc
+++ /dev/null
@@ -1,72 +0,0 @@
-//===-- Alarm.inc - Implement Unix Alarm Support ----------------*- C++ -*-===//
-//
-//                     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 UNIX Alarm support.
-//
-//===----------------------------------------------------------------------===//
-
-#include <signal.h>
-#include <unistd.h>
-#include <cassert>
-using namespace llvm;
-
-/// AlarmCancelled - This flag is set by the SIGINT signal handler if the
-/// user presses CTRL-C.
-static volatile bool AlarmCancelled = false;
-
-/// AlarmTriggered - This flag is set by the SIGALRM signal handler if the
-/// alarm was triggered.
-static volatile bool AlarmTriggered = false;
-
-/// NestedSOI - Sanity check.  Alarms cannot be nested or run in parallel.
-/// This ensures that they never do.
-static bool NestedSOI = false;
-
-static RETSIGTYPE SigIntHandler(int Sig) {
-  AlarmCancelled = true;
-  signal(SIGINT, SigIntHandler);
-}
-
-static RETSIGTYPE SigAlarmHandler(int Sig) {
-  AlarmTriggered = true;
-}
-
-static void (*OldSigIntHandler) (int);
-
-void sys::SetupAlarm(unsigned seconds) {
-  assert(!NestedSOI && "sys::SetupAlarm calls cannot be nested!");
-  NestedSOI = true;
-  AlarmCancelled = false;
-  AlarmTriggered = false;
-  ::signal(SIGALRM, SigAlarmHandler);
-  OldSigIntHandler = ::signal(SIGINT, SigIntHandler);
-  ::alarm(seconds);
-}
-
-void sys::TerminateAlarm() {
-  assert(NestedSOI && "sys::TerminateAlarm called without sys::SetupAlarm!");
-  ::alarm(0);
-  ::signal(SIGALRM, SIG_DFL);
-  ::signal(SIGINT, OldSigIntHandler);
-  AlarmCancelled = false;
-  AlarmTriggered = false;
-  NestedSOI = false;
-}
-
-int sys::AlarmStatus() {
-  if (AlarmCancelled)
-    return -1;
-  if (AlarmTriggered)
-    return 1;
-  return 0;
-}
-
-void sys::Sleep(unsigned n) {
-  ::sleep(n);
-}
diff --git a/lib/Support/Windows/Alarm.inc b/lib/Support/Windows/Alarm.inc
deleted file mode 100644
index e0d00a0142..0000000000
--- a/lib/Support/Windows/Alarm.inc
+++ /dev/null
@@ -1,43 +0,0 @@
-//===-- Alarm.inc - Implement Win32 Alarm Support ---------------*- C++ -*-===//
-//
-//                     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 Win32 Alarm support.
-//
-//===----------------------------------------------------------------------===//
-
-#include <cassert>
-using namespace llvm;
-
-/// NestedSOI - Sanity check.  Alarms cannot be nested or run in parallel.
-/// This ensures that they never do.
-static bool NestedSOI = false;
-
-void sys::SetupAlarm(unsigned seconds) {
-  assert(!NestedSOI && "sys::SetupAlarm calls cannot be nested!");
-  NestedSOI = true;
-  // FIXME: Implement for Win32
-}
-
-void sys::TerminateAlarm() {
-  assert(NestedSOI && "sys::TerminateAlarm called without sys::SetupAlarm!");
-  // FIXME: Implement for Win32
-  NestedSOI = false;
-}
-
-int sys::AlarmStatus() {
-  // FIXME: Implement for Win32
-  return 0;
-}
-
-// Don't pull in all of the Windows headers.
-extern "C"  void __stdcall Sleep(unsigned long);
-
-void sys::Sleep(unsigned n) {
-  ::Sleep(n*1000);
-}