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