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43 lines
882 B
C++
43 lines
882 B
C++
/*++
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Copyright (c) 2011 Microsoft Corporation
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Module Name:
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scoped_ctrl_c.h
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Abstract:
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Scoped control-c handler.
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Author:
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Leonardo de Moura (leonardo) 2011-04-27.
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Revision History:
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--*/
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#ifndef _SCOPED_CTRL_C_H_
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#define _SCOPED_CTRL_C_H_
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#include"event_handler.h"
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struct scoped_ctrl_c {
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event_handler & m_cancel_eh;
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bool m_first;
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bool m_once;
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bool m_enabled;
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void (*m_old_handler)(int);
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scoped_ctrl_c * m_old_scoped_ctrl_c;
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static scoped_ctrl_c * g_obj;
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static void on_ctrl_c(int);
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public:
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// If once == true, then the cancel_eh is invoked only at the first Ctrl-C.
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// The next time, the old signal handler will take over.
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// if enabled == false, then scoped_ctrl_c is a noop
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scoped_ctrl_c(event_handler & eh, bool once=true, bool enabled=true);
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~scoped_ctrl_c();
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void reset() { m_first = true; }
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};
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#endif
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