aboutsummaryrefslogtreecommitdiff
path: root/lib/System/Unix/Alarm.inc
diff options
context:
space:
mode:
Diffstat (limited to 'lib/System/Unix/Alarm.inc')
-rw-r--r--lib/System/Unix/Alarm.inc72
1 files changed, 0 insertions, 72 deletions
diff --git a/lib/System/Unix/Alarm.inc b/lib/System/Unix/Alarm.inc
deleted file mode 100644
index fb42b6c65da1..000000000000
--- a/lib/System/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);
-}