280 lines
13 KiB
C
280 lines
13 KiB
C
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/*
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----------------------------------------------------------------
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Notice that the following BSD-style license applies to this one
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file (memcheck.h) only. The rest of Valgrind is licensed under the
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terms of the GNU General Public License, version 2, unless
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otherwise indicated. See the COPYING file in the source
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distribution for details.
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----------------------------------------------------------------
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This file is part of MemCheck, a heavyweight Valgrind tool for
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detecting memory errors.
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Copyright (C) 2000-2010 Julian Seward. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. The origin of this software must not be misrepresented; you must
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not claim that you wrote the original software. If you use this
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software in a product, an acknowledgment in the product
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documentation would be appreciated but is not required.
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3. Altered source versions must be plainly marked as such, and must
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not be misrepresented as being the original software.
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4. The name of the author may not be used to endorse or promote
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products derived from this software without specific prior written
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permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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----------------------------------------------------------------
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Notice that the above BSD-style license applies to this one file
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(memcheck.h) only. The entire rest of Valgrind is licensed under
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the terms of the GNU General Public License, version 2. See the
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COPYING file in the source distribution for details.
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----------------------------------------------------------------
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*/
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#ifndef __MEMCHECK_H
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#define __MEMCHECK_H
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/* This file is for inclusion into client (your!) code.
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You can use these macros to manipulate and query memory permissions
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inside your own programs.
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See comment near the top of valgrind.h on how to use them.
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*/
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#include "valgrind.h"
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/* !! ABIWARNING !! ABIWARNING !! ABIWARNING !! ABIWARNING !!
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This enum comprises an ABI exported by Valgrind to programs
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which use client requests. DO NOT CHANGE THE ORDER OF THESE
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ENTRIES, NOR DELETE ANY -- add new ones at the end. */
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typedef
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enum {
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VG_USERREQ__MAKE_MEM_NOACCESS = VG_USERREQ_TOOL_BASE('M','C'),
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VG_USERREQ__MAKE_MEM_UNDEFINED,
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VG_USERREQ__MAKE_MEM_DEFINED,
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VG_USERREQ__DISCARD,
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VG_USERREQ__CHECK_MEM_IS_ADDRESSABLE,
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VG_USERREQ__CHECK_MEM_IS_DEFINED,
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VG_USERREQ__DO_LEAK_CHECK,
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VG_USERREQ__COUNT_LEAKS,
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VG_USERREQ__GET_VBITS,
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VG_USERREQ__SET_VBITS,
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VG_USERREQ__CREATE_BLOCK,
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VG_USERREQ__MAKE_MEM_DEFINED_IF_ADDRESSABLE,
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/* Not next to VG_USERREQ__COUNT_LEAKS because it was added later. */
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VG_USERREQ__COUNT_LEAK_BLOCKS,
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/* This is just for memcheck's internal use - don't use it */
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_VG_USERREQ__MEMCHECK_RECORD_OVERLAP_ERROR
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= VG_USERREQ_TOOL_BASE('M','C') + 256
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} Vg_MemCheckClientRequest;
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/* Client-code macros to manipulate the state of memory. */
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/* Mark memory at _qzz_addr as unaddressable for _qzz_len bytes. */
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#define VALGRIND_MAKE_MEM_NOACCESS(_qzz_addr,_qzz_len) \
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VALGRIND_DO_CLIENT_REQUEST_EXPR(0 /* default return */, \
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VG_USERREQ__MAKE_MEM_NOACCESS, \
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(_qzz_addr), (_qzz_len), 0, 0, 0)
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/* Similarly, mark memory at _qzz_addr as addressable but undefined
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for _qzz_len bytes. */
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#define VALGRIND_MAKE_MEM_UNDEFINED(_qzz_addr,_qzz_len) \
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VALGRIND_DO_CLIENT_REQUEST_EXPR(0 /* default return */, \
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VG_USERREQ__MAKE_MEM_UNDEFINED, \
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(_qzz_addr), (_qzz_len), 0, 0, 0)
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/* Similarly, mark memory at _qzz_addr as addressable and defined
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for _qzz_len bytes. */
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#define VALGRIND_MAKE_MEM_DEFINED(_qzz_addr,_qzz_len) \
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VALGRIND_DO_CLIENT_REQUEST_EXPR(0 /* default return */, \
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VG_USERREQ__MAKE_MEM_DEFINED, \
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(_qzz_addr), (_qzz_len), 0, 0, 0)
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/* Similar to VALGRIND_MAKE_MEM_DEFINED except that addressability is
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not altered: bytes which are addressable are marked as defined,
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but those which are not addressable are left unchanged. */
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#define VALGRIND_MAKE_MEM_DEFINED_IF_ADDRESSABLE(_qzz_addr,_qzz_len) \
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VALGRIND_DO_CLIENT_REQUEST_EXPR(0 /* default return */, \
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VG_USERREQ__MAKE_MEM_DEFINED_IF_ADDRESSABLE, \
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(_qzz_addr), (_qzz_len), 0, 0, 0)
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/* Create a block-description handle. The description is an ascii
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string which is included in any messages pertaining to addresses
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within the specified memory range. Has no other effect on the
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properties of the memory range. */
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#define VALGRIND_CREATE_BLOCK(_qzz_addr,_qzz_len, _qzz_desc) \
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VALGRIND_DO_CLIENT_REQUEST_EXPR(0 /* default return */, \
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VG_USERREQ__CREATE_BLOCK, \
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(_qzz_addr), (_qzz_len), (_qzz_desc), \
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0, 0)
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/* Discard a block-description-handle. Returns 1 for an
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invalid handle, 0 for a valid handle. */
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#define VALGRIND_DISCARD(_qzz_blkindex) \
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VALGRIND_DO_CLIENT_REQUEST_EXPR(0 /* default return */, \
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VG_USERREQ__DISCARD, \
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0, (_qzz_blkindex), 0, 0, 0)
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/* Client-code macros to check the state of memory. */
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/* Check that memory at _qzz_addr is addressable for _qzz_len bytes.
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If suitable addressibility is not established, Valgrind prints an
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error message and returns the address of the first offending byte.
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Otherwise it returns zero. */
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#define VALGRIND_CHECK_MEM_IS_ADDRESSABLE(_qzz_addr,_qzz_len) \
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VALGRIND_DO_CLIENT_REQUEST_EXPR(0, \
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VG_USERREQ__CHECK_MEM_IS_ADDRESSABLE, \
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(_qzz_addr), (_qzz_len), 0, 0, 0)
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/* Check that memory at _qzz_addr is addressable and defined for
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_qzz_len bytes. If suitable addressibility and definedness are not
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established, Valgrind prints an error message and returns the
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address of the first offending byte. Otherwise it returns zero. */
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#define VALGRIND_CHECK_MEM_IS_DEFINED(_qzz_addr,_qzz_len) \
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VALGRIND_DO_CLIENT_REQUEST_EXPR(0, \
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VG_USERREQ__CHECK_MEM_IS_DEFINED, \
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(_qzz_addr), (_qzz_len), 0, 0, 0)
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/* Use this macro to force the definedness and addressibility of an
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lvalue to be checked. If suitable addressibility and definedness
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are not established, Valgrind prints an error message and returns
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the address of the first offending byte. Otherwise it returns
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zero. */
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#define VALGRIND_CHECK_VALUE_IS_DEFINED(__lvalue) \
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VALGRIND_CHECK_MEM_IS_DEFINED( \
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(volatile unsigned char *)&(__lvalue), \
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(unsigned long)(sizeof (__lvalue)))
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/* Do a full memory leak check (like --leak-check=full) mid-execution. */
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#define VALGRIND_DO_LEAK_CHECK \
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{unsigned long _qzz_res; \
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VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
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VG_USERREQ__DO_LEAK_CHECK, \
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0, 0, 0, 0, 0); \
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}
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/* Do a summary memory leak check (like --leak-check=summary) mid-execution. */
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#define VALGRIND_DO_QUICK_LEAK_CHECK \
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{unsigned long _qzz_res; \
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VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
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VG_USERREQ__DO_LEAK_CHECK, \
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1, 0, 0, 0, 0); \
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}
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/* Return number of leaked, dubious, reachable and suppressed bytes found by
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all previous leak checks. They must be lvalues. */
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#define VALGRIND_COUNT_LEAKS(leaked, dubious, reachable, suppressed) \
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/* For safety on 64-bit platforms we assign the results to private
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unsigned long variables, then assign these to the lvalues the user
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specified, which works no matter what type 'leaked', 'dubious', etc
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are. We also initialise '_qzz_leaked', etc because
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VG_USERREQ__COUNT_LEAKS doesn't mark the values returned as
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defined. */ \
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{unsigned long _qzz_res; \
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unsigned long _qzz_leaked = 0, _qzz_dubious = 0; \
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unsigned long _qzz_reachable = 0, _qzz_suppressed = 0; \
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VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
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VG_USERREQ__COUNT_LEAKS, \
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&_qzz_leaked, &_qzz_dubious, \
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&_qzz_reachable, &_qzz_suppressed, 0); \
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leaked = _qzz_leaked; \
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dubious = _qzz_dubious; \
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reachable = _qzz_reachable; \
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suppressed = _qzz_suppressed; \
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}
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/* Return number of leaked, dubious, reachable and suppressed bytes found by
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all previous leak checks. They must be lvalues. */
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#define VALGRIND_COUNT_LEAK_BLOCKS(leaked, dubious, reachable, suppressed) \
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/* For safety on 64-bit platforms we assign the results to private
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unsigned long variables, then assign these to the lvalues the user
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specified, which works no matter what type 'leaked', 'dubious', etc
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are. We also initialise '_qzz_leaked', etc because
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VG_USERREQ__COUNT_LEAKS doesn't mark the values returned as
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defined. */ \
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{unsigned long _qzz_res; \
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unsigned long _qzz_leaked = 0, _qzz_dubious = 0; \
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unsigned long _qzz_reachable = 0, _qzz_suppressed = 0; \
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VALGRIND_DO_CLIENT_REQUEST(_qzz_res, 0, \
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VG_USERREQ__COUNT_LEAK_BLOCKS, \
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&_qzz_leaked, &_qzz_dubious, \
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&_qzz_reachable, &_qzz_suppressed, 0); \
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leaked = _qzz_leaked; \
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dubious = _qzz_dubious; \
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reachable = _qzz_reachable; \
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suppressed = _qzz_suppressed; \
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}
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/* Get the validity data for addresses [zza..zza+zznbytes-1] and copy it
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into the provided zzvbits array. Return values:
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0 if not running on valgrind
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1 success
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2 [previously indicated unaligned arrays; these are now allowed]
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3 if any parts of zzsrc/zzvbits are not addressable.
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The metadata is not copied in cases 0, 2 or 3 so it should be
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impossible to segfault your system by using this call.
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*/
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#define VALGRIND_GET_VBITS(zza,zzvbits,zznbytes) \
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VALGRIND_DO_CLIENT_REQUEST_EXPR(0, \
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VG_USERREQ__GET_VBITS, \
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(const char*)(zza), \
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(char*)(zzvbits), \
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(zznbytes), 0, 0)
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/* Set the validity data for addresses [zza..zza+zznbytes-1], copying it
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from the provided zzvbits array. Return values:
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0 if not running on valgrind
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1 success
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2 [previously indicated unaligned arrays; these are now allowed]
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3 if any parts of zza/zzvbits are not addressable.
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The metadata is not copied in cases 0, 2 or 3 so it should be
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impossible to segfault your system by using this call.
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*/
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#define VALGRIND_SET_VBITS(zza,zzvbits,zznbytes) \
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VALGRIND_DO_CLIENT_REQUEST_EXPR(0, \
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VG_USERREQ__SET_VBITS, \
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(const char*)(zza), \
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(const char*)(zzvbits), \
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(zznbytes), 0, 0 )
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#endif
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