/usr/include/ace/FIFO.h is in libace-dev 6.2.8+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 FIFO.h
*
* $Id: FIFO.h 91574 2010-08-30 16:52:24Z shuston $
*
* @author Doug Schmidt
*/
//==========================================================================
#ifndef ACE_FIFO_H
#define ACE_FIFO_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/IPC_SAP.h"
#include "ace/os_include/os_limits.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
/**
* @class ACE_FIFO
*
* @brief Abstract base class for UNIX FIFOs
*
* UNIX FIFOs are also known Named Pipes, which are totally
* unrelated to Windows Named Pipes. If you want to use a local
* IPC mechanism that will be portable to both UNIX and Windows,
* take a look at the ACE_Pipe or ACE_SPIPE_Stream classes.
*/
class ACE_Export ACE_FIFO : public ACE_IPC_SAP
{
public:
/**
* Open up the named pipe (FIFO) on the @a rendezvous point in accordance
* with the @a flags.
*
* If @a flags contains @c O_CREAT open() will attempt to call mkfifo()
* to create the FIFO before opening it. In this case, this method
* will not fail simply because the fifo already exists.
*
* @retval 0 for success
* @retval -1 for error; errno contains the error code.
*/
int open (const ACE_TCHAR *rendezvous, int flags, mode_t perms,
LPSECURITY_ATTRIBUTES sa = 0);
/// Close down the ACE_FIFO without removing the rendezvous point.
int close (void);
/// Close down the ACE_FIFO and remove the rendezvous point from the
/// file system.
int remove (void);
/// Return the local address of this endpoint.
int get_local_addr (const ACE_TCHAR *&rendezvous) const;
/// Dump the state of an object.
void dump (void) const;
/// Declare the dynamic allocation hooks.
ACE_ALLOC_HOOK_DECLARE;
protected:
/**
* Protected constructors ensure this class cannot be used directly.
* User code must use ACE_FIFO_Send and/or ACE_FIFO_Recv.
*/
//@{
/// Default constructor.
ACE_FIFO (void);
/// Open up the named pipe on the @a rendezvous in accordance with the
/// flags.
ACE_FIFO (const ACE_TCHAR *rendezvous, int flags, mode_t perms,
LPSECURITY_ATTRIBUTES sa = 0);
//@}
private:
/// Rendezvous point in the file system.
ACE_TCHAR rendezvous_[MAXPATHLEN + 1];
};
ACE_END_VERSIONED_NAMESPACE_DECL
#if defined (__ACE_INLINE__)
#include "ace/FIFO.inl"
#endif /* __ACE_INLINE__ */
#include /**/ "ace/post.h"
#endif /* ACE_FIFO_H */
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