2 /*--------------------------------------------------------------------*/
3 /*--- Malloc replacement. replacemalloc_core.c ---*/
4 /*--------------------------------------------------------------------*/
7 This file is part of Valgrind, a dynamic binary instrumentation
10 Copyright (C) 2000-2010 Julian Seward
13 This program is free software; you can redistribute it and/or
14 modify it under the terms of the GNU General Public License as
15 published by the Free Software Foundation; either version 2 of the
16 License, or (at your option) any later version.
18 This program is distributed in the hope that it will be useful, but
19 WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 General Public License for more details.
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
28 The GNU General Public License is contained in the file COPYING.
31 #include "pub_core_basics.h"
32 #include "pub_core_libcbase.h"
33 #include "pub_core_libcprint.h"
34 #include "pub_core_mallocfree.h"
35 #include "pub_core_options.h"
36 #include "pub_core_replacemalloc.h"
38 /*------------------------------------------------------------*/
39 /*--- Command line options ---*/
40 /*------------------------------------------------------------*/
42 /* Nb: the allocator always rounds blocks up to a multiple of
46 /* DEBUG: print malloc details? default: NO */
47 Bool VG_(clo_trace_malloc) = False;
49 /* Minimum alignment in functions that don't specify alignment explicitly.
50 default: 0, i.e. use VG_MIN_MALLOC_SZB. */
51 UInt VG_(clo_alignment) = VG_MIN_MALLOC_SZB;
54 Bool VG_(replacement_malloc_process_cmd_line_option)(Char* arg)
56 if VG_INT_CLO(arg, "--alignment", VG_(clo_alignment)) {
57 if (VG_(clo_alignment) < VG_MIN_MALLOC_SZB ||
58 VG_(clo_alignment) > 4096 ||
59 VG_(log2)( VG_(clo_alignment) ) == -1 /* not a power of 2 */)
61 VG_(message)(Vg_UserMsg,
62 "Invalid --alignment= setting. "
63 "Should be a power of 2, >= %d, <= 4096.\n",
66 VG_(err_bad_option)("--alignment");
70 else if VG_BOOL_CLO(arg, "--trace-malloc", VG_(clo_trace_malloc)) {}
77 /*------------------------------------------------------------*/
78 /*--- Useful functions ---*/
79 /*------------------------------------------------------------*/
81 void* VG_(cli_malloc) ( SizeT align, SizeT nbytes )
83 // 'align' should be valid (ie. big enough and a power of two) by now.
84 // VG_(arena_memalign)() will abort if it's not.
85 if (VG_MIN_MALLOC_SZB == align)
86 return VG_(arena_malloc) ( VG_AR_CLIENT, "replacemalloc.cm.1",
89 return VG_(arena_memalign) ( VG_AR_CLIENT, "replacemalloc.cm.2",
93 void VG_(cli_free) ( void* p )
95 VG_(arena_free) ( VG_AR_CLIENT, p );
98 Bool VG_(addr_is_in_block)( Addr a, Addr start, SizeT size, SizeT rz_szB )
100 return ( start - rz_szB <= a && a < start + size + rz_szB );
103 /*--------------------------------------------------------------------*/
105 /*--------------------------------------------------------------------*/