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b13cf98e6b
dependent portion of the lib/Support/SlowOperationTimer code into the lib/System implementation where it can be ported to different platforms. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24937 91177308-0d34-0410-b5e6-96231b3b80d8
43 lines
1.4 KiB
C++
43 lines
1.4 KiB
C++
//===- llvm/System/Alarm.h - Alarm Generation support ----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by Reid Spencer and is distributed under the
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// University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file provides an operating system independent interface to alarm(2)
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// type functionality. The Alarm class allows a one-shot alarm to be set up
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// at some number of seconds in the future. When the alarm triggers, a method
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// is called to process the event
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SYSTEM_ALARM_H
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#define LLVM_SYSTEM_ALARM_H
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namespace llvm {
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namespace sys {
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/// This function registers an alarm to trigger some number of \p seconds in
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/// the future. When that time arrives, the \p callback is called. You can
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/// only call this once. Each time
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/// @returns nothing
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void SetupAlarm(
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unsigned seconds ///< Number of seconds in future when alarm arrives
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);
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/// This function terminates the alarm previously set up
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/// @returns nothing
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void TerminateAlarm();
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/// This function acquires the status of the alarm.
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/// @returns -1=cancelled, 0=untriggered, 1=triggered
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int AlarmStatus();
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} // End sys namespace
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} // End llvm namespace
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#endif
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