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git://sourceware.org/git/valgrind.git
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3392155359
- Update COPYING and VEX/LICENSE.GPL to version 3. - Update README, NEWS, docs/manual license and contributing text. - Update file headers to say either version 3 of the License, or (at your option) any later version. - Leave tests and perf file headers as is, unless the code is derived from Valgrind/VEX. - Leave valgrind.h, cachegrind.h, callgrind.h, drd.h, helgrind.h, memcheck.h and dhat.h Hybrid-BSD licensed.
123 lines
4.7 KiB
C
123 lines
4.7 KiB
C
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/*--------------------------------------------------------------------*/
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/*--- Malloc replacement. pub_tool_replacemalloc.h ---*/
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/*--------------------------------------------------------------------*/
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/*
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This file is part of Valgrind, a dynamic binary instrumentation
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framework.
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Copyright (C) 2000-2017 Julian Seward
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jseward@acm.org
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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The GNU General Public License is contained in the file COPYING.
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*/
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#ifndef __PUB_TOOL_REPLACEMALLOC_H
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#define __PUB_TOOL_REPLACEMALLOC_H
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#include "pub_tool_basics.h" // Addr
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/* If a tool replaces malloc() et al, the easiest way to do so is to
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link libreplacemalloc_toolpreload.o into its vgpreload_*.so file, and
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use the functions declared below. You can do it from scratch,
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though, if you enjoy that sort of thing. */
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/* Can be called from VG_(tdict).malloc_malloc et al to do the actual
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* alloc/freeing. */
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extern void* VG_(cli_malloc) ( SizeT align, SizeT nbytes );
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extern void* VG_(cli_realloc)( void* ptr, SizeT nbytes );
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extern void VG_(cli_free) ( void* p );
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// Returns the usable size of a heap-block. It's the asked-for size plus
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// possibly some more due to rounding up.
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extern SizeT VG_(cli_malloc_usable_size)( void* p );
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/* If a tool uses deferred freeing (e.g. memcheck to catch accesses to
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freed memory) it can maintain number and total size of queued blocks
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in these variable to provide more accurate statistics about client
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memory usage. Currently used by mallinfo(). */
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extern Long VG_(free_queue_volume);
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extern Long VG_(free_queue_length);
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/* Check if an address is within a range, allowing for redzones at edges */
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extern Bool VG_(addr_is_in_block)( Addr a, Addr start,
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SizeT size, SizeT rz_szB );
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/* ------------------------------------------------------------------ */
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/* Some options that can be used by a tool if malloc() et al are replaced.
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The tool should call the functions in the appropriate places to give
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control over these aspects of Valgrind's version of malloc(). */
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/* DEBUG: print malloc details? default: NO */
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extern Bool VG_(clo_trace_malloc);
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/* Minimum alignment in functions that don't specify alignment explicitly.
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default: VG_MIN_MALLOC_SZB */
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extern UInt VG_(clo_alignment);
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/* Controls the behaviour of realloc(ptr, 0) */
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extern Bool VG_(clo_realloc_zero_bytes_frees);
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extern Bool VG_(replacement_malloc_process_cmd_line_option) ( const HChar* arg );
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// If tool is replacing malloc for the client, the below returns
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// the effective client redzone as derived from the default
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// provided by the tool, VG_(clo_redzone_size) and the minimum
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// redzone required by m_mallocfree.c.
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// It is an error to call this before VG_(needs_malloc_replacement) has
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// been called.
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extern SizeT VG_(malloc_effective_client_redzone_size)(void);
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/* We have 4 different C functions that perform aligned allocation
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* They all have slightly different error conditions. But we only have
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* one wrapper - tl_memalign. Rather than split that into four
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* nearly identical functions (or resort to a lot of client
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* requests), the following enum and struct add context so that
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* memcheck can figure out whether to emit an error.
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* This isn't a problem for the C++ allocators. Even though
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* there are many of them they all have the same alignment
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* behaviour. */
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typedef enum {
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AllocKindMemalign,
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AllocKindPosixMemalign,
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AllocKindAlignedAlloc,
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AllocKindDeleteDefault,
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AllocKindVecDeleteDefault,
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AllocKindDeleteSized,
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AllocKindVecDeleteSized,
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AllocKindNewAligned,
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AllocKindVecNewAligned,
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AllocKindDeleteAligned,
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AllocKindVecDeleteAligned,
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AllocKindDeleteSizedAligned,
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AllocKindVecDeleteSizedAligned,
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AllocKindFreeSized,
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AllocKindFreeAlignedSized
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} AlignedAllocKind;
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struct AlignedAllocInfo {
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SizeT orig_alignment;
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SizeT size;
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void *mem;
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AlignedAllocKind alloc_kind;
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};
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#endif // __PUB_TOOL_REPLACEMALLOC_H
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/*--------------------------------------------------------------------*/
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/*--- end ---*/
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/*--------------------------------------------------------------------*/
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