head	1.2;
access;
symbols
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	FSF:1.1.1;
locks; strict;
comment	@// @;


1.2
date	2006.11.19.08.37.01;	author skrll;	state dead;
branches;
next	1.1;

1.1
date	2003.07.23.02.42.54;	author mrg;	state Exp;
branches
	1.1.1.1;
next	;

1.1.1.1
date	2003.07.23.02.42.54;	author mrg;	state Exp;
branches;
next	;


desc
@@


1.2
log
@Act as mrg's keyboard and delete gcc 3.
@
text
@// -*- C++ -*- Manage the thread-local exception globals.
// Copyright (C) 2001 Free Software Foundation, Inc.
//
// This file is part of GNU CC.
//
// GNU CC is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
//
// GNU CC is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with GNU CC; see the file COPYING.  If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.

// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.


#include <exception>
#include <cstdlib>
#include "unwind-cxx.h"
#include "bits/c++config.h"
#include "bits/gthr.h"

using namespace __cxxabiv1;


// Single-threaded fallback buffer.
static __cxa_eh_globals globals_static;

#if __GTHREADS
static __gthread_key_t globals_key;
static int use_thread_key = -1;

static void
get_globals_dtor (void *ptr)
{
  __gthread_key_dtor (globals_key, ptr);
  if (ptr)
    std::free (ptr);
}

static void
get_globals_init ()
{
  use_thread_key =
    (__gthread_key_create (&globals_key, get_globals_dtor) == 0);
}

static void
get_globals_init_once ()
{
  static __gthread_once_t once = __GTHREAD_ONCE_INIT;
  if (__gthread_once (&once, get_globals_init) != 0
      || use_thread_key < 0)
    use_thread_key = 0;
}
#endif

extern "C" __cxa_eh_globals *
__cxa_get_globals_fast ()
{
#if __GTHREADS
  if (use_thread_key)
    return (__cxa_eh_globals *) __gthread_getspecific (globals_key);
  else
    return &globals_static;
#else
  return &globals_static;
#endif
}

extern "C" __cxa_eh_globals *
__cxa_get_globals ()
{
#if __GTHREADS
  __cxa_eh_globals *g;

  if (use_thread_key == 0)
    return &globals_static;

  if (use_thread_key < 0)
    {
      get_globals_init_once ();

      // Make sure use_thread_key got initialized.
      if (use_thread_key == 0)
	return &globals_static;
    }

  g = (__cxa_eh_globals *) __gthread_getspecific (globals_key);
  if (! g)
    {
      if ((g = (__cxa_eh_globals *)
	   std::malloc (sizeof (__cxa_eh_globals))) == 0
	  || __gthread_setspecific (globals_key, (void *) g) != 0)
        std::terminate ();
      g->caughtExceptions = 0;
      g->uncaughtExceptions = 0;
    }

  return g;
#else
  return &globals_static;
#endif
}
@


1.1
log
@Initial revision
@
text
@@


1.1.1.1
log
@initial import of GCC 3.3 sources.  (this is the latest GCC 3.3.1
prerelease snapshot, 3.3.1-20030720, we will update to 3.3.1 when
it becomes available.)
@
text
@@