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// @(#)nvlist.cpp 1.6 95/11/04
// Copyright 1994-1995 by Sun Microsystems Inc.
// All Rights Reserved
//
// Implementation of Named Value List
//
#include <assert.h>
#if !defined (VXWORKS)
#include <memory.h>
#endif
#include <orb.hh>
#include <initguid.h>
#include "debug.hh"
#include "thread.hh"
#ifdef _POSIX_THREADS
//
// If POSIX threads are available, set up lock covering refcounts.
//
static pthread_mutex_t nvlist_lock = PTHREAD_MUTEX_INITIALIZER;
#endif // _POSIX_THREADS
//
// COM's IUnknown support
//
// {77420087-F276-11ce-9598-0000C07CA898}
DEFINE_GUID (IID_CORBA_NamedValue,
0x77420087, 0xf276, 0x11ce, 0x95, 0x98, 0x0, 0x0, 0xc0, 0x7c, 0xa8, 0x98);
ULONG
__stdcall
CORBA_NamedValue::AddRef ()
{
#ifdef _POSIX_THREADS
Critical region (&nvlist_lock);
#endif
return _refcount++;
}
ULONG
__stdcall
CORBA_NamedValue::Release ()
{
#ifdef _POSIX_THREADS
Critical region (&nvlist_lock);
#endif
assert (this != 0);
if (--_refcount != 0)
return _refcount;
delete this;
return 0;
}
HRESULT
__stdcall
CORBA_NamedValue::QueryInterface (
REFIID riid,
void **ppv
)
{
*ppv = 0;
if (IID_CORBA_NamedValue == riid || IID_IUnknown == riid)
*ppv = this;
if (*ppv == 0)
return ResultFromScode (E_NOINTERFACE);
(void) AddRef ();
return NOERROR;
}
//
// Reference counting for DII Request object
//
void
CORBA_release (CORBA_NamedValue_ptr nv)
{
if (nv)
nv->Release ();
}
CORBA_Boolean
CORBA_is_nil (CORBA_NamedValue_ptr nv)
{
return (CORBA_Boolean)(nv == 0);
}
CORBA_NamedValue::~CORBA_NamedValue ()
{
if (_name)
CORBA_string_free ((CORBA_String)_name);
}
//
// COM's IUnknown support
//
// {77420088-F276-11ce-9598-0000C07CA898}
DEFINE_GUID (IID_CORBA_NVList,
0x77420088, 0xf276, 0x11ce, 0x95, 0x98, 0x0, 0x0, 0xc0, 0x7c, 0xa8, 0x98);
ULONG
__stdcall
CORBA_NVList::AddRef ()
{
#ifdef _POSIX_THREADS
Critical region (&nvlist_lock);
#endif
return _refcount++;
}
ULONG
__stdcall
CORBA_NVList::Release ()
{
#ifdef _POSIX_THREADS
Critical region (&nvlist_lock);
#endif
assert (this != 0);
if (--_refcount != 0)
return _refcount;
delete this;
return 0;
}
HRESULT
__stdcall
CORBA_NVList::QueryInterface (
REFIID riid,
void **ppv
)
{
*ppv = 0;
if (IID_CORBA_NVList == riid || IID_IUnknown == riid)
*ppv = this;
if (*ppv == 0)
return ResultFromScode (E_NOINTERFACE);
(void) AddRef ();
return NOERROR;
}
//
// Reference counting for DII Request object
//
void
CORBA_release (CORBA_NVList_ptr nvl)
{
if (nvl)
nvl->Release ();
}
CORBA_Boolean
CORBA_is_nil (CORBA_NVList_ptr nvl)
{
return (CORBA_Boolean)(nvl == 0);
}
CORBA_NVList::~CORBA_NVList ()
{
unsigned i;
for (i = 0; i < _len; i++)
(&_values [i])->~CORBA_NamedValue ();
if (_values)
ACE_OS::free ((char *)_values);
_values = 0;
_len = _max = 0;
}
CORBA_NamedValue_ptr
CORBA_NVList::add_value (
const CORBA_Char *name,
const CORBA_Any &value,
CORBA_Flags flags,
CORBA_Environment &env
)
{
env.clear ();
if (!(flags & (CORBA_ARG_IN|CORBA_ARG_OUT|CORBA_ARG_INOUT))) {
env.exception (new CORBA_BAD_PARAM (COMPLETED_NO));
return 0;
}
//
// We track "_len" and "_max" like sequences do; mixing the
// "add_arg" and nvlist[i] style accessors produces undefined
// behaviour.
//
unsigned len = _len++;
//
// Extend the array with an _initialized_ element ... relying on
// zeroed memory to be sufficiently initialized.
//
// XXX report malloc failures as errors -- how?
//
if (_values == 0) {
_values = (CORBA_NamedValue_ptr)
calloc (_len, sizeof (CORBA_NamedValue));
_max = _len;
} else if (len >= _max) {
_values = (CORBA_NamedValue_ptr) ACE_OS::realloc ((char *)_values,
sizeof (CORBA_NamedValue) * _len);
(void) ACE_OS::memset (&_values [_max], 0,
sizeof (_values [_max]) * (_len - _max));
_max = _len;
}
assert (_values != 0);
_values [len]._flags = flags;
_values [len]._name = CORBA_string_copy (name);
if (flags & CORBA_IN_COPY_VALUE) {
//
// IN_COPY_VALUE means that the parameter is not "borrowed"
// by the ORB, but rather that the ORB copies its value.
//
// Initialize the newly allocated memory using a copy
// constructor that places the new "Any" value at just
// the right place, and makes a "deep copy" of the data.
//
(void) new (&_values [len]._any) CORBA_Any (value);
} else {
//
// The normal behaviour for parameters is that the ORB
// "borrows" their memory for the duration of calls.
//
// Initialize the newly allocated "Any" using a normal
// constructor that places the new "Any" value at just
// the right place, yet doesn't copy the memory (except
// for duplicating the typecode).
//
// NOTE: DSI has yet to be updated so that it's OK to
// use such application-allocated memory. It needs at
// least a "send the response now" call.
//
(void) new (&_values [len]._any) CORBA_Any (value.type (),
value.value (), CORBA_B_FALSE);
}
return &_values [len];
}
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