/usr/include/ace/Sig_Adapter.h is in libace-dev 6.3.3+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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//=============================================================================
/**
* @file Sig_Adapter.h
*
* @author Douglas C. Schmidt <schmidt@cs.wustl.edu>
*/
//=============================================================================
#ifndef ACE_SIG_ADAPTER_H
#define ACE_SIG_ADAPTER_H
#include /**/ "ace/pre.h"
#include /**/ "ace/ACE_export.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ace/Event_Handler.h"
#include "ace/Signal.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
/**
* @class ACE_Sig_Adapter
*
* @brief Provide an adapter that transforms various types of signal
* handlers into the scheme used by the ACE_Reactor.
*/
class ACE_Export ACE_Sig_Adapter : public ACE_Event_Handler
{
public:
ACE_Sig_Adapter (ACE_Sig_Action &, int sigkey);
ACE_Sig_Adapter (ACE_Event_Handler *, int sigkey);
ACE_Sig_Adapter (ACE_Sig_Handler_Ex, int sigkey = 0);
~ACE_Sig_Adapter (void);
/// Returns this signal key that's used to remove this from the
/// ACE_Reactor's internal table.
int sigkey (void);
/// Called by the <Reactor> to dispatch the signal handler.
virtual int handle_signal (int, siginfo_t *, ucontext_t *);
private:
/// Key for this signal handler (used to remove it).
int sigkey_;
/// Is this an external handler or an ACE handler?
enum
{
/// We're just wrapping an ACE_Event_Handler.
ACE_HANDLER,
/// An ACE_Sig_Action.
SIG_ACTION,
/// A normal C function.
C_FUNCTION
} type_;
// = This should be a union, but C++ won't allow that because the
// <ACE_Sig_Action> has a constructor.
/// This is an external handler (ugh).
ACE_Sig_Action sa_;
/// This is an ACE hander.
ACE_Event_Handler *eh_;
/// This is a normal C function.
ACE_Sig_Handler_Ex sig_func_;
};
ACE_END_VERSIONED_NAMESPACE_DECL
#include /**/ "ace/post.h"
#endif /* ACE_SIG_ADAPTER_H */
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