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88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
// $Id: SV_Shared_Memory.cpp 91286 2010-08-05 09:04:31Z johnnyw $
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#include "ace/SV_Shared_Memory.h"
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#include "ace/Log_Msg.h"
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#if !defined (__ACE_INLINE__)
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#include "ace/SV_Shared_Memory.inl"
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#endif /* __ACE_INLINE__ */
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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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ACE_ALLOC_HOOK_DEFINE(ACE_SV_Shared_Memory)
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void
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ACE_SV_Shared_Memory::dump (void) const
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{
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#if defined (ACE_HAS_DUMP)
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ACE_TRACE ("ACE_SV_Shared_Memory::dump");
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#endif /* ACE_HAS_DUMP */
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}
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// Creates a shared memory segment of SIZE bytes and *does* attach to
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// this segment.
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int
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ACE_SV_Shared_Memory::open_and_attach (key_t external_id,
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size_t sz,
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int create,
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int perms,
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void *virtual_addr,
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int flags)
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{
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ACE_TRACE ("ACE_SV_Shared_Memory::open_and_attach");
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if (this->open (external_id, sz, create, perms) == -1)
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return -1;
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else if (this->attach (virtual_addr, flags) == -1)
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return -1;
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else
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return 0;
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}
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// Constructor interface to this->open_and_attach () member function.
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ACE_SV_Shared_Memory::ACE_SV_Shared_Memory (key_t external_id,
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size_t sz,
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int create,
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int perms,
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void *virtual_addr,
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int flags)
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{
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ACE_TRACE ("ACE_SV_Shared_Memory::ACE_SV_Shared_Memory");
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if (this->open_and_attach (external_id, sz, create,
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perms, virtual_addr, flags) == -1)
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ACE_ERROR ((LM_ERROR, ACE_TEXT ("%p\n"),
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ACE_TEXT ("ACE_SV_Shared_Memory::ACE_SV_Shared_Memory")));
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}
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// The "do nothing" constructor.
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ACE_SV_Shared_Memory::ACE_SV_Shared_Memory (void)
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: internal_id_ (0),
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size_ (0),
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segment_ptr_ (0)
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{
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ACE_TRACE ("ACE_SV_Shared_Memory::ACE_SV_Shared_Memory");
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}
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// Added this constructor to accept an internal id, the one generated
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// when a server constructs with the key IPC_PRIVATE. The client can
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// be passed ACE_SV_Shared_Memory::internal_id via a socket and call
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// this construtor to attach the existing segment. This prevents
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// having to hard-code a key in advance. Courtesy of Marvin Wolfthal
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// (maw@fsg.com).
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ACE_SV_Shared_Memory::ACE_SV_Shared_Memory (ACE_HANDLE int_id,
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int flags)
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: internal_id_ (int_id),
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size_ (0)
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{
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ACE_TRACE ("ACE_SV_Shared_Memory::ACE_SV_Shared_Memory");
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if (this->attach (0, flags) == -1)
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ACE_ERROR ((LM_ERROR, ACE_TEXT ("%p\n"),
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ACE_TEXT ("ACE_SV_Shared_Memory::ACE_SV_Shared_Memory")));
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}
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ACE_END_VERSIONED_NAMESPACE_DECL
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