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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2012-10-02 11:35:25 -07:00
parent 3f9edad676
commit e9eab22e5c
1186 changed files with 381859 additions and 0 deletions
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42
lib/scoped_ctrl_c.h Normal file
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/*++
Copyright (c) 2011 Microsoft Corporation
Module Name:
scoped_ctrl_c.h
Abstract:
Scoped control-c handler.
Author:
Leonardo de Moura (leonardo) 2011-04-27.
Revision History:
--*/
#ifndef _SCOPED_CTRL_C_H_
#define _SCOPED_CTRL_C_H_
#include"event_handler.h"
struct scoped_ctrl_c {
event_handler & m_cancel_eh;
bool m_first;
bool m_once;
bool m_enabled;
void (*m_old_handler)(int);
scoped_ctrl_c * m_old_scoped_ctrl_c;
static scoped_ctrl_c * g_obj;
static void on_ctrl_c(int);
public:
// If once == true, then the cancel_eh is invoked only at the first Ctrl-C.
// The next time, the old signal handler will take over.
// if enabled == false, then scoped_ctrl_c is a noop
scoped_ctrl_c(event_handler & eh, bool once=true, bool enabled=true);
~scoped_ctrl_c();
void reset() { m_first = true; }
};
#endif