// Support routines for the -*- C++ -*- dynamic memory management. // Copyright (C) 1997, 1998 Free Software Foundation // 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, if you link this library with other files, // some of which are compiled with GCC, to produce an executable, // this library 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 "new" #ifdef MACOSX #include "apple/keymgr.h" /* for thread safety */ #include "apple/embedded.h" /* defines special version of malloc() */ #endif using std::new_handler; using std::bad_alloc; extern "C" void *malloc (size_t); extern new_handler __new_handler; #define WEAK(x) \ x __attribute__ ((weak)); \ x #ifdef L_op_newnt WEAK (void * operator new (size_t sz, const std::nothrow_t&) throw()) { void *p; /* malloc (0) is unpredictable; avoid it. */ if (sz == 0) sz = 1; p = (void *) malloc (sz); while (p == 0) { #if defined(MACOSX) && !defined(APPLE_KERNEL_EXTENSION) new_handler handler = (new_handler) _keymgr_get_per_thread_data (KEYMGR_NEW_HANLDER_KEY); #else new_handler handler = __new_handler; #endif if (! handler) return 0; #ifdef APPLE_KERNEL_EXTENSION handler (); #else try { handler (); } catch (bad_alloc &) { return 0; } #endif p = (void *) malloc (sz); } return p; } #endif #ifdef L_op_new WEAK (void * operator new (size_t sz) throw (std::bad_alloc)) { void *p; /* malloc (0) is unpredictable; avoid it. */ if (sz == 0) sz = 1; p = (void *) malloc (sz); while (p == 0) { #if defined(MACOSX) && !defined(APPLE_KERNEL_EXTENSION) new_handler handler = (new_handler) _keymgr_get_per_thread_data (KEYMGR_NEW_HANLDER_KEY); #else new_handler handler = __new_handler; #endif if (! handler) #ifdef APPLE_KERNEL_EXTENSION return(p) ; #else throw bad_alloc (); #endif handler (); p = (void *) malloc (sz); } return p; } #endif /*L_op_new*/