| /* |
| * Memory allocation routines with error checking. Idea from GNU libiberty. |
| * |
| * Copyright (C) 2001-2007 Peter Johnson |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include "util.h" |
| |
| #include "coretype.h" |
| #include "errwarn.h" |
| |
| |
| #ifdef WITH_DMALLOC |
| #undef yasm_xmalloc |
| #undef yasm_xcalloc |
| #undef yasm_xrealloc |
| #undef yasm_xfree |
| #endif |
| |
| static /*@only@*/ /*@out@*/ void *def_xmalloc(size_t size); |
| static /*@only@*/ void *def_xcalloc(size_t nelem, size_t elsize); |
| static /*@only@*/ void *def_xrealloc |
| (/*@only@*/ /*@out@*/ /*@returned@*/ /*@null@*/ void *oldmem, size_t size) |
| /*@modifies oldmem@*/; |
| static void def_xfree(/*@only@*/ /*@out@*/ /*@null@*/ void *p) |
| /*@modifies p@*/; |
| |
| /* storage for global function pointers */ |
| YASM_LIB_DECL |
| /*@only@*/ /*@out@*/ void * (*yasm_xmalloc) (size_t size) = def_xmalloc; |
| YASM_LIB_DECL |
| /*@only@*/ void * (*yasm_xcalloc) (size_t nelem, size_t elsize) = def_xcalloc; |
| YASM_LIB_DECL |
| /*@only@*/ void * (*yasm_xrealloc) |
| (/*@only@*/ /*@out@*/ /*@returned@*/ /*@null@*/ void *oldmem, size_t size) |
| /*@modifies oldmem@*/ = def_xrealloc; |
| YASM_LIB_DECL |
| void (*yasm_xfree) (/*@only@*/ /*@out@*/ /*@null@*/ void *p) |
| /*@modifies p@*/ = def_xfree; |
| |
| |
| static void * |
| def_xmalloc(size_t size) |
| { |
| void *newmem; |
| |
| if (size == 0) |
| size = 1; |
| newmem = malloc(size); |
| if (!newmem) |
| yasm__fatal(N_("out of memory")); |
| |
| return newmem; |
| } |
| |
| static void * |
| def_xcalloc(size_t nelem, size_t elsize) |
| { |
| void *newmem; |
| |
| if (nelem == 0 || elsize == 0) |
| nelem = elsize = 1; |
| |
| newmem = calloc(nelem, elsize); |
| if (!newmem) |
| yasm__fatal(N_("out of memory")); |
| |
| return newmem; |
| } |
| |
| static void * |
| def_xrealloc(void *oldmem, size_t size) |
| { |
| void *newmem; |
| |
| if (size == 0) |
| size = 1; |
| if (!oldmem) |
| newmem = malloc(size); |
| else |
| newmem = realloc(oldmem, size); |
| if (!newmem) |
| yasm__fatal(N_("out of memory")); |
| |
| return newmem; |
| } |
| |
| static void |
| def_xfree(void *p) |
| { |
| if (!p) |
| return; |
| free(p); |
| } |