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https://github.com/ioacademy-jikim/debugging
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73 lines
3.1 KiB
C
73 lines
3.1 KiB
C
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/*--------------------------------------------------------------------*/
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/*--- MallocFree: high-level memory management. ---*/
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/*--- pub_tool_mallocfree.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) 2000-2015 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 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307, USA.
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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_MALLOCFREE_H
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#define __PUB_TOOL_MALLOCFREE_H
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#include "pub_tool_basics.h" // SizeT
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// These can be for allocating memory used by tools.
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// Nb: the allocators *always succeed* -- they never return NULL (Valgrind
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// will abort if they can't allocate the memory).
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// The 'cc' is a string that identifies the allocation point. It's used when
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// --profile-heap=yes is specified.
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extern void* VG_(malloc) ( const HChar* cc, SizeT nbytes );
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extern void VG_(free) ( void* p );
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extern void* VG_(calloc) ( const HChar* cc, SizeT n, SizeT bytes_per_elem );
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extern void* VG_(realloc) ( const HChar* cc, void* p, SizeT size );
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extern void VG_(realloc_shrink)( void* ptr, SizeT size );
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extern HChar* VG_(strdup) ( const HChar* cc, const HChar* s );
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// TODO: move somewhere else
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// Call here to bomb the system when out of memory (mmap anon fails)
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__attribute__((noreturn))
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extern void VG_(out_of_memory_NORETURN) ( const HChar* who, SizeT szB );
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// VG_(perm_malloc) is for allocating small blocks which are
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// never released. The overhead for such blocks is minimal.
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// VG_(perm_malloc) returns memory which is (at least) aligned
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// on a multiple of align.
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// Use the macro vg_alignof (type) to get a safe alignment for a type.
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// No other function can be used on these permanently allocated blocks.
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// In particular, do *not* call VG_(free) or VG_(realloc).
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// Technically, these blocks will be returned from big superblocks
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// only containing such permanently allocated blocks.
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// Note that there is no cc cost centre : all such blocks will be
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// regrouped under the "perm_alloc" cost centre.
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extern void* VG_(perm_malloc) ( SizeT nbytes, Int align );
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#endif // __PUB_TOOL_MALLOCFREE_H
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/*--------------------------------------------------------------------*/
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/*--- end ---*/
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/*--------------------------------------------------------------------*/
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