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

1 files changed, 0 insertions, 72 deletions

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);
-}