| |
| /*--------------------------------------------------------------------*/ |
| /*--- Malloc replacement. replacemalloc_core.c ---*/ |
| /*--------------------------------------------------------------------*/ |
| |
| /* |
| This file is part of Valgrind, a dynamic binary instrumentation |
| framework. |
| |
| Copyright (C) 2000-2015 Julian Seward |
| jseward@acm.org |
| |
| This program 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 of the |
| License, or (at your option) any later version. |
| |
| This program 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 this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307, USA. |
| |
| The GNU General Public License is contained in the file COPYING. |
| */ |
| |
| #include "pub_core_basics.h" |
| #include "pub_core_libcbase.h" |
| #include "pub_core_libcprint.h" |
| #include "pub_core_libcassert.h" |
| #include "pub_core_tooliface.h" // VG_(needs) |
| #include "pub_core_mallocfree.h" |
| #include "pub_core_options.h" |
| #include "pub_core_replacemalloc.h" |
| |
| /*------------------------------------------------------------*/ |
| /*--- Command line options ---*/ |
| /*------------------------------------------------------------*/ |
| |
| /* Nb: the allocator always rounds blocks up to a multiple of |
| VG_MIN_MALLOC_SZB. |
| */ |
| |
| /* DEBUG: print malloc details? default: NO */ |
| Bool VG_(clo_trace_malloc) = False; |
| |
| /* Minimum alignment in functions that don't specify alignment explicitly. |
| default: 0, i.e. use VG_MIN_MALLOC_SZB. */ |
| UInt VG_(clo_alignment) = VG_MIN_MALLOC_SZB; |
| |
| |
| Bool VG_(replacement_malloc_process_cmd_line_option)(const HChar* arg) |
| { |
| if VG_INT_CLO(arg, "--alignment", VG_(clo_alignment)) { |
| if (VG_(clo_alignment) < VG_MIN_MALLOC_SZB || |
| VG_(clo_alignment) > 4096 || |
| VG_(log2)( VG_(clo_alignment) ) == -1 /* not a power of 2 */) |
| { |
| VG_(fmsg_bad_option)(arg, |
| "Alignment must be a power of 2 in the range %d..4096.\n", |
| VG_MIN_MALLOC_SZB); |
| } |
| } |
| |
| else if VG_BOOL_CLO(arg, "--trace-malloc", VG_(clo_trace_malloc)) {} |
| else |
| return False; |
| |
| return True; |
| } |
| |
| SizeT VG_(malloc_effective_client_redzone_size)(void) |
| { |
| vg_assert(VG_(needs).malloc_replacement); |
| |
| return VG_(arena_redzone_size)(VG_AR_CLIENT); |
| } |
| |
| /*------------------------------------------------------------*/ |
| /*--- Useful functions ---*/ |
| /*------------------------------------------------------------*/ |
| |
| void* VG_(cli_malloc) ( SizeT align, SizeT nbytes ) |
| { |
| // 'align' should be valid (ie. big enough and a power of two) by now. |
| // VG_(arena_memalign)() will abort if it's not. |
| if (VG_MIN_MALLOC_SZB == align) |
| return VG_(arena_malloc) ( VG_AR_CLIENT, "replacemalloc.cm.1", |
| nbytes ); |
| else |
| return VG_(arena_memalign) ( VG_AR_CLIENT, "replacemalloc.cm.2", |
| align, nbytes ); |
| } |
| |
| void VG_(cli_free) ( void* p ) |
| { |
| VG_(arena_free) ( VG_AR_CLIENT, p ); |
| } |
| |
| // Useful for querying user blocks. |
| SizeT VG_(cli_malloc_usable_size) ( void* p ) |
| { |
| return VG_(arena_malloc_usable_size)(VG_AR_CLIENT, p); |
| } |
| |
| Bool VG_(addr_is_in_block)( Addr a, Addr start, SizeT size, SizeT rz_szB ) |
| { |
| return ( start - rz_szB <= a && a < start + size + rz_szB ); |
| } |
| |
| /*--------------------------------------------------------------------*/ |
| /*--- end ---*/ |
| /*--------------------------------------------------------------------*/ |
