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#include "tao/Environment.h"
#include "tao/ORB_Core.h"
#include "tao/SystemException.h"
#include "tao/default_environment.h"
#include "ace/OS_NS_string.h"
#if !defined (__ACE_INLINE__)
# include "tao/Environment.inl"
#endif /* __ACE_INLINE__ */
ACE_RCSID (tao,
Environment,
"$Id$")
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
CORBA::Environment::Environment (void)
: exception_ (0)
, previous_ (0)
{
}
CORBA::Environment::Environment (const CORBA::Environment& rhs)
: exception_ (0)
, previous_ (0)
{
if (rhs.exception_)
this->exception_ = rhs.exception_->_tao_duplicate ();
}
CORBA::Environment::Environment (TAO_ORB_Core* orb_core)
: exception_ (0)
, previous_ (orb_core->default_environment ())
{
orb_core->default_environment (this);
}
CORBA::Environment&
CORBA::Environment::operator= (const CORBA::Environment& rhs)
{
CORBA::Environment tmp (rhs);
{
CORBA::Exception *tmp_ex = this->exception_;
this->exception_ = tmp.exception_;
tmp.exception_ = tmp_ex;
}
{
CORBA::Environment *tmp_env = this->previous_;
this->previous_ = rhs.previous_;
tmp.previous_ = tmp_env;
}
return *this;
}
CORBA::Environment::~Environment (void)
{
this->clear ();
// If previous is 0 then this is the first Environment, allocated
// with the ORB, it shouldn't try to pop because the ORB is beign
// destroyed also.
if (this->previous_ != 0)
TAO_ORB_Core_instance ()->default_environment (this->previous_);
}
void
CORBA::Environment::exception (CORBA::Exception *ex)
{
// @@ This does not look right, setting the exception to the
// contained exception is a bug, the application is only
// supposed to pass in a pointer to an exception that it (the
// application) owns, however, if we contain the exception then
// *WE* own it.
// Normally I (coryan) would remove code like this, but I feel
// that it is a typical example of defensive programming for the
// *BAD*, i.e. we are not helping the application to get better
// and only making the ORB bigger and slower.
#if 0
if (ex != this->exception_)
{
this->clear ();
}
#else
ACE_ASSERT (ex != this->exception_);
this->clear ();
#endif /* 0 */
this->exception_ = ex;
if (this->exception_ != 0)
this->exception_->_raise ();
}
void
CORBA::Environment::clear (void)
{
delete this->exception_;
this->exception_ = 0;
}
CORBA::Environment&
CORBA::Environment::default_environment ()
{
//
// If we are using native C++ exceptions the user is *not* supposed
// to clear the environment every time she calls into TAO. In fact
// the user is not supposed to use the environment at all!
//
// But TAO is using the default environment internally, thus
// somebody has to clear it. Since TAO passes the environment around
// this function should only be called when going from the user code
// into TAO's code.
//
// This is not an issue when using the alternative C++ mapping (with
// the Environment argument) because then the user is supposed to
// clear the environment before calling into the ORB.
//
TAO_ORB_Core_instance ()->default_environment ()->clear ();
return TAO_default_environment ();;
}
// Convenience -- say if the exception is a system exception or not.
int
CORBA::Environment::exception_type (void) const
{
// @@ Carlos, is this stuff that's properly "transformed" for EBCDIC
// platforms?!
// @@ Doug: Yes, they are used to compare against the _id() of the
// exception, which should have been mappend to the native
// codeset. Notice the "should" we haven't tried that stuff yet,
// and i find it hard to keep track of all the transformations
// going on, specially for the TypeCodes that are generated by
// the IDL compiler vs. the ones hard-coded in
// $TAO_ROOT/tao/Typecode_Constants.cpp
static char sysex_prefix [] = "IDL:omg.org/CORBA/";
static char typecode_extra [] = "TypeCode/";
if (!this->exception_)
{
return CORBA::NO_EXCEPTION;
}
// All exceptions currently (CORBA 2.0) defined in the CORBA scope
// are system exceptions ... except for a couple that are related to
// TypeCodes.
const char *id = this->exception_->_rep_id ();
if ((ACE_OS::strncmp (id,
sysex_prefix,
sizeof sysex_prefix - 1) == 0
&& ACE_OS::strncmp (id + sizeof sysex_prefix - 1,
typecode_extra,
sizeof typecode_extra - 1) != 0))
return CORBA::SYSTEM_EXCEPTION;
else
return CORBA::USER_EXCEPTION;
}
const char*
CORBA::Environment::exception_id (void) const
{
if (this->exception_ == 0)
return 0;
return this->exception_->_rep_id ();
}
// Diagnostic utility routine: describe the exception onto the
// standard I/O stream passed as a parameter.
void
CORBA::Environment::print_exception (const char *info,
FILE *) const
{
if (this->exception_)
{
const char *id = this->exception_->_rep_id ();
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("TAO: (%P|%t) EXCEPTION, %C\n"),
info));
CORBA::SystemException *x2 =
CORBA::SystemException::_downcast (this->exception_);
if (x2 != 0)
x2->_tao_print_system_exception ();
else
// @@ we can use the exception's typecode to dump all the data
// held within it ...
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("TAO: (%P|%t) user exception, ID '%C'\n"),
id));
}
else
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("TAO: (%P|%t) no exception, %C\n"), info));
}
TAO_END_VERSIONED_NAMESPACE_DECL
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