Bug 444488 - Use glibc.pthread.stack_cache_size tunable
[valgrind.git] / coregrind / m_replacemalloc / replacemalloc_core.c
blob4b7d8ae609e36a9d6a916fc0981d232931e97d1b
2 /*--------------------------------------------------------------------*/
3 /*--- Malloc replacement. replacemalloc_core.c ---*/
4 /*--------------------------------------------------------------------*/
6 /*
7 This file is part of Valgrind, a dynamic binary instrumentation
8 framework.
10 Copyright (C) 2000-2017 Julian Seward
11 jseward@acm.org
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, see <http://www.gnu.org/licenses/>.
26 The GNU General Public License is contained in the file COPYING.
29 #include "pub_core_basics.h"
30 #include "pub_core_libcbase.h"
31 #include "pub_core_libcprint.h"
32 #include "pub_core_libcassert.h"
33 #include "pub_core_tooliface.h" // VG_(needs)
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
43 VG_MIN_MALLOC_SZB.
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)(const HChar* 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_(fmsg_bad_option)(arg,
62 "Alignment must be a power of 2 in the range %d..4096.\n",
63 VG_MIN_MALLOC_SZB);
66 else if VG_XACT_CLO(arg, "--xtree-memory=none",
67 VG_(clo_xtree_memory), Vg_XTMemory_None) {}
68 else if VG_XACT_CLO(arg, "--xtree-memory=allocs",
69 VG_(clo_xtree_memory), Vg_XTMemory_Allocs) {}
70 else if VG_XACT_CLO(arg, "--xtree-memory=full",
71 VG_(clo_xtree_memory), Vg_XTMemory_Full) {}
72 else if VG_STR_CLO (arg, "--xtree-memory-file",
73 VG_(clo_xtree_memory_file)) {}
74 else if VG_BOOL_CLO(arg, "--xtree-compress-strings",
75 VG_(clo_xtree_compress_strings)) {}
77 else if VG_BOOL_CLO(arg, "--trace-malloc", VG_(clo_trace_malloc)) {}
78 else
79 return False;
81 return True;
84 SizeT VG_(malloc_effective_client_redzone_size)(void)
86 vg_assert(VG_(needs).malloc_replacement);
88 return VG_(arena_redzone_size)(VG_AR_CLIENT);
91 /*------------------------------------------------------------*/
92 /*--- Useful functions ---*/
93 /*------------------------------------------------------------*/
95 void* VG_(cli_malloc) ( SizeT align, SizeT nbytes )
97 // 'align' should be valid (ie. big enough and a power of two) by now.
98 // VG_(arena_memalign)() will abort if it's not.
99 if (VG_MIN_MALLOC_SZB == align)
100 return VG_(arena_malloc) ( VG_AR_CLIENT, "replacemalloc.cm.1",
101 nbytes );
102 else
103 return VG_(arena_memalign) ( VG_AR_CLIENT, "replacemalloc.cm.2",
104 align, nbytes );
107 void* VG_(cli_realloc) ( void* ptr, SizeT nbytes )
109 return VG_(arena_realloc) ( VG_AR_CLIENT, "replacemalloc.cr.1",
110 ptr, nbytes );
113 void VG_(cli_free) ( void* p )
115 VG_(arena_free) ( VG_AR_CLIENT, p );
118 // Useful for querying user blocks.
119 SizeT VG_(cli_malloc_usable_size) ( void* p )
121 return VG_(arena_malloc_usable_size)(VG_AR_CLIENT, p);
124 Bool VG_(addr_is_in_block)( Addr a, Addr start, SizeT size, SizeT rz_szB )
126 return ( start - rz_szB <= a && a < start + size + rz_szB );
129 /*--------------------------------------------------------------------*/
130 /*--- end ---*/
131 /*--------------------------------------------------------------------*/