njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | ---------------------------------------------------------------- |
| 4 | |
| 5 | Notice that the following BSD-style license applies to this one |
sewardj | a81709d | 2002-12-28 12:55:48 +0000 | [diff] [blame] | 6 | file (memcheck.h) only. The entire rest of Valgrind is licensed |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 7 | under the terms of the GNU General Public License, version 2. See |
| 8 | the COPYING file in the source distribution for details. |
| 9 | |
| 10 | ---------------------------------------------------------------- |
| 11 | |
nethercote | 137bc55 | 2003-11-14 17:47:54 +0000 | [diff] [blame] | 12 | This file is part of MemCheck, a heavyweight Valgrind tool for |
njn | c953984 | 2002-10-02 13:26:35 +0000 | [diff] [blame] | 13 | detecting memory errors. |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 14 | |
nethercote | bb1c991 | 2004-01-04 16:43:23 +0000 | [diff] [blame] | 15 | Copyright (C) 2000-2004 Julian Seward. All rights reserved. |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 16 | |
| 17 | Redistribution and use in source and binary forms, with or without |
| 18 | modification, are permitted provided that the following conditions |
| 19 | are met: |
| 20 | |
| 21 | 1. Redistributions of source code must retain the above copyright |
| 22 | notice, this list of conditions and the following disclaimer. |
| 23 | |
| 24 | 2. The origin of this software must not be misrepresented; you must |
| 25 | not claim that you wrote the original software. If you use this |
| 26 | software in a product, an acknowledgment in the product |
| 27 | documentation would be appreciated but is not required. |
| 28 | |
| 29 | 3. Altered source versions must be plainly marked as such, and must |
| 30 | not be misrepresented as being the original software. |
| 31 | |
| 32 | 4. The name of the author may not be used to endorse or promote |
| 33 | products derived from this software without specific prior written |
| 34 | permission. |
| 35 | |
| 36 | THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS |
| 37 | OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 38 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 39 | ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 40 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 41 | DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
| 42 | GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 43 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 44 | WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 45 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 46 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 47 | |
| 48 | ---------------------------------------------------------------- |
| 49 | |
| 50 | Notice that the above BSD-style license applies to this one file |
sewardj | a81709d | 2002-12-28 12:55:48 +0000 | [diff] [blame] | 51 | (memcheck.h) only. The entire rest of Valgrind is licensed under |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 52 | the terms of the GNU General Public License, version 2. See the |
| 53 | COPYING file in the source distribution for details. |
| 54 | |
| 55 | ---------------------------------------------------------------- |
| 56 | */ |
| 57 | |
| 58 | |
njn25 | cac76cb | 2002-09-23 11:21:57 +0000 | [diff] [blame] | 59 | #ifndef __MEMCHECK_H |
| 60 | #define __MEMCHECK_H |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 61 | |
| 62 | |
| 63 | /* This file is for inclusion into client (your!) code. |
| 64 | |
| 65 | You can use these macros to manipulate and query memory permissions |
| 66 | inside your own programs. |
| 67 | |
| 68 | See comment near the top of valgrind.h on how to use them. |
| 69 | */ |
| 70 | |
| 71 | #include "valgrind.h" |
| 72 | |
| 73 | typedef |
| 74 | enum { |
sewardj | 3404251 | 2002-10-22 04:14:35 +0000 | [diff] [blame] | 75 | VG_USERREQ__MAKE_NOACCESS = VG_USERREQ_SKIN_BASE('M','C'), |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 76 | VG_USERREQ__MAKE_WRITABLE, |
| 77 | VG_USERREQ__MAKE_READABLE, |
| 78 | VG_USERREQ__DISCARD, |
| 79 | VG_USERREQ__CHECK_WRITABLE, |
| 80 | VG_USERREQ__CHECK_READABLE, |
njn | 47363ab | 2003-04-21 13:24:40 +0000 | [diff] [blame] | 81 | VG_USERREQ__DO_LEAK_CHECK, |
njn | 1078545 | 2003-05-20 16:38:24 +0000 | [diff] [blame] | 82 | VG_USERREQ__COUNT_LEAKS, |
njn | d799418 | 2003-10-02 13:44:04 +0000 | [diff] [blame] | 83 | |
| 84 | /* These two have been moved into core, because they are useful for |
nethercote | 7cc9c23 | 2004-01-21 15:08:04 +0000 | [diff] [blame] | 85 | any tool that tracks heap blocks. Hence the suffix. But they're |
njn | d799418 | 2003-10-02 13:44:04 +0000 | [diff] [blame] | 86 | still here for backwards compatibility, although Valgrind will |
| 87 | abort with an explanatory message if you use them. */ |
| 88 | VG_USERREQ__MALLOCLIKE_BLOCK__OLD_DO_NOT_USE, |
| 89 | VG_USERREQ__FREELIKE_BLOCK__OLD_DO_NOT_USE, |
| 90 | |
sewardj | ee07084 | 2003-07-05 17:53:55 +0000 | [diff] [blame] | 91 | VG_USERREQ__GET_VBITS, |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 92 | VG_USERREQ__SET_VBITS, |
| 93 | |
| 94 | /* This is just for memcheck's internal use - don't use it */ |
nethercote | abcf612 | 2004-03-04 18:05:55 +0000 | [diff] [blame] | 95 | _VG_USERREQ__MEMCHECK_GET_RECORD_OVERLAP = VG_USERREQ_SKIN_BASE('M','C')+256 |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 96 | } Vg_MemCheckClientRequest; |
| 97 | |
| 98 | |
| 99 | |
| 100 | /* Client-code macros to manipulate the state of memory. */ |
| 101 | |
| 102 | /* Mark memory at _qzz_addr as unaddressible and undefined for |
| 103 | _qzz_len bytes. Returns an int handle pertaining to the block |
| 104 | descriptions Valgrind will use in subsequent error messages. */ |
| 105 | #define VALGRIND_MAKE_NOACCESS(_qzz_addr,_qzz_len) \ |
sewardj | 34a257c | 2003-03-15 19:20:52 +0000 | [diff] [blame] | 106 | (__extension__({unsigned int _qzz_res; \ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 107 | VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0 /* default return */, \ |
| 108 | VG_USERREQ__MAKE_NOACCESS, \ |
| 109 | _qzz_addr, _qzz_len, 0, 0); \ |
| 110 | _qzz_res; \ |
sewardj | 34a257c | 2003-03-15 19:20:52 +0000 | [diff] [blame] | 111 | })) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 112 | |
| 113 | /* Similarly, mark memory at _qzz_addr as addressible but undefined |
| 114 | for _qzz_len bytes. */ |
| 115 | #define VALGRIND_MAKE_WRITABLE(_qzz_addr,_qzz_len) \ |
sewardj | 34a257c | 2003-03-15 19:20:52 +0000 | [diff] [blame] | 116 | (__extension__({unsigned int _qzz_res; \ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 117 | VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0 /* default return */, \ |
| 118 | VG_USERREQ__MAKE_WRITABLE, \ |
| 119 | _qzz_addr, _qzz_len, 0, 0); \ |
| 120 | _qzz_res; \ |
sewardj | 34a257c | 2003-03-15 19:20:52 +0000 | [diff] [blame] | 121 | })) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 122 | |
| 123 | /* Similarly, mark memory at _qzz_addr as addressible and defined |
| 124 | for _qzz_len bytes. */ |
| 125 | #define VALGRIND_MAKE_READABLE(_qzz_addr,_qzz_len) \ |
sewardj | 34a257c | 2003-03-15 19:20:52 +0000 | [diff] [blame] | 126 | (__extension__({unsigned int _qzz_res; \ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 127 | VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0 /* default return */, \ |
| 128 | VG_USERREQ__MAKE_READABLE, \ |
| 129 | _qzz_addr, _qzz_len, 0, 0); \ |
| 130 | _qzz_res; \ |
sewardj | 34a257c | 2003-03-15 19:20:52 +0000 | [diff] [blame] | 131 | })) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 132 | |
| 133 | /* Discard a block-description-handle obtained from the above three |
| 134 | macros. After this, Valgrind will no longer be able to relate |
| 135 | addressing errors to the user-defined block associated with the |
| 136 | handle. The permissions settings associated with the handle remain |
| 137 | in place. Returns 1 for an invalid handle, 0 for a valid |
| 138 | handle. */ |
| 139 | #define VALGRIND_DISCARD(_qzz_blkindex) \ |
sewardj | 34a257c | 2003-03-15 19:20:52 +0000 | [diff] [blame] | 140 | (__extension__ ({unsigned int _qzz_res; \ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 141 | VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0 /* default return */, \ |
| 142 | VG_USERREQ__DISCARD, \ |
| 143 | 0, _qzz_blkindex, 0, 0); \ |
| 144 | _qzz_res; \ |
sewardj | 34a257c | 2003-03-15 19:20:52 +0000 | [diff] [blame] | 145 | })) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 146 | |
| 147 | |
| 148 | /* Client-code macros to check the state of memory. */ |
| 149 | |
| 150 | /* Check that memory at _qzz_addr is addressible for _qzz_len bytes. |
| 151 | If suitable addressibility is not established, Valgrind prints an |
| 152 | error message and returns the address of the first offending byte. |
| 153 | Otherwise it returns zero. */ |
| 154 | #define VALGRIND_CHECK_WRITABLE(_qzz_addr,_qzz_len) \ |
sewardj | 34a257c | 2003-03-15 19:20:52 +0000 | [diff] [blame] | 155 | (__extension__({unsigned int _qzz_res; \ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 156 | VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0, \ |
| 157 | VG_USERREQ__CHECK_WRITABLE, \ |
| 158 | _qzz_addr, _qzz_len, 0, 0); \ |
| 159 | _qzz_res; \ |
sewardj | 34a257c | 2003-03-15 19:20:52 +0000 | [diff] [blame] | 160 | })) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 161 | |
| 162 | /* Check that memory at _qzz_addr is addressible and defined for |
| 163 | _qzz_len bytes. If suitable addressibility and definedness are not |
| 164 | established, Valgrind prints an error message and returns the |
| 165 | address of the first offending byte. Otherwise it returns zero. */ |
| 166 | #define VALGRIND_CHECK_READABLE(_qzz_addr,_qzz_len) \ |
sewardj | 34a257c | 2003-03-15 19:20:52 +0000 | [diff] [blame] | 167 | (__extension__({unsigned int _qzz_res; \ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 168 | VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0, \ |
| 169 | VG_USERREQ__CHECK_READABLE, \ |
| 170 | _qzz_addr, _qzz_len, 0, 0); \ |
| 171 | _qzz_res; \ |
sewardj | 34a257c | 2003-03-15 19:20:52 +0000 | [diff] [blame] | 172 | })) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 173 | |
| 174 | /* Use this macro to force the definedness and addressibility of a |
| 175 | value to be checked. If suitable addressibility and definedness |
| 176 | are not established, Valgrind prints an error message and returns |
| 177 | the address of the first offending byte. Otherwise it returns |
| 178 | zero. */ |
| 179 | #define VALGRIND_CHECK_DEFINED(__lvalue) \ |
| 180 | (void) \ |
| 181 | VALGRIND_CHECK_READABLE( \ |
| 182 | (volatile unsigned char *)&(__lvalue), \ |
| 183 | (unsigned int)(sizeof (__lvalue))) |
| 184 | |
njn | 6e69ecd | 2003-10-02 13:25:02 +0000 | [diff] [blame] | 185 | /* Do a memory leak check mid-execution. */ |
| 186 | #define VALGRIND_DO_LEAK_CHECK \ |
| 187 | {unsigned int _qzz_res; \ |
| 188 | VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0, \ |
| 189 | VG_USERREQ__DO_LEAK_CHECK, \ |
| 190 | 0, 0, 0, 0); \ |
| 191 | } |
| 192 | |
| 193 | /* Return number of leaked, dubious, reachable and suppressed bytes found by |
| 194 | all previous leak checks. They must be lvalues. */ |
| 195 | #define VALGRIND_COUNT_LEAKS(leaked, dubious, reachable, suppressed) \ |
| 196 | {unsigned int _qzz_res; \ |
| 197 | VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0, \ |
| 198 | VG_USERREQ__COUNT_LEAKS, \ |
| 199 | &leaked, &dubious, &reachable, &suppressed);\ |
| 200 | } |
| 201 | |
njn | 6e69ecd | 2003-10-02 13:25:02 +0000 | [diff] [blame] | 202 | |
njn | d799418 | 2003-10-02 13:44:04 +0000 | [diff] [blame] | 203 | /* These two have been moved to valgrind.h; still here so that a warning can |
| 204 | be printed out for any programs using the old ones. */ |
| 205 | #define VALGRIND_MALLOCLIKE_BLOCK__OLD_DO_NOT_USE(addr, sizeB, rzB, is_zeroed)\ |
njn | 1078545 | 2003-05-20 16:38:24 +0000 | [diff] [blame] | 206 | {unsigned int _qzz_res; \ |
| 207 | VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0, \ |
| 208 | VG_USERREQ__MALLOCLIKE_BLOCK, \ |
| 209 | addr, sizeB, rzB, is_zeroed); \ |
| 210 | } |
njn | d799418 | 2003-10-02 13:44:04 +0000 | [diff] [blame] | 211 | #define VALGRIND_FREELIKE_BLOCK__OLD_DO_NOT_USE(addr, rzB) \ |
njn | 1078545 | 2003-05-20 16:38:24 +0000 | [diff] [blame] | 212 | {unsigned int _qzz_res; \ |
| 213 | VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0, \ |
| 214 | VG_USERREQ__FREELIKE_BLOCK, \ |
| 215 | addr, rzB, 0, 0); \ |
| 216 | } |
| 217 | |
njn | d799418 | 2003-10-02 13:44:04 +0000 | [diff] [blame] | 218 | |
sewardj | ee07084 | 2003-07-05 17:53:55 +0000 | [diff] [blame] | 219 | /* Get in zzvbits the validity data for the zznbytes starting at |
| 220 | zzsrc. Return values: |
| 221 | 0 if not running on valgrind |
| 222 | 1 success |
| 223 | 2 if zzsrc/zzvbits arrays are not aligned 0 % 4, or |
| 224 | zznbytes is not 0 % 4. |
| 225 | 3 if any parts of zzsrc/zzvbits are not addressible. |
| 226 | The metadata is not copied in cases 0, 2 or 3 so it should be |
| 227 | impossible to segfault your system by using this call. |
| 228 | */ |
| 229 | #define VALGRIND_GET_VBITS(zzsrc,zzvbits,zznbytes) \ |
| 230 | (__extension__({unsigned int _qzz_res; \ |
| 231 | char* czzsrc = (char*)zzsrc; \ |
| 232 | char* czzvbits = (char*)zzvbits; \ |
| 233 | VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0, \ |
| 234 | VG_USERREQ__GET_VBITS, \ |
| 235 | czzsrc, czzvbits, zznbytes,0 ); \ |
| 236 | _qzz_res; \ |
| 237 | })) |
| 238 | |
| 239 | /* Apply the validity data in zzvbits to the zznbytes starting at |
| 240 | zzdst. Return values: |
| 241 | 0 if not running on valgrind |
| 242 | 1 success |
| 243 | 2 if zzdst/zzvbits arrays are not aligned 0 % 4, or |
| 244 | zznbytes is not 0 % 4. |
| 245 | 3 if any parts of zzdst/zzvbits are not addressible. |
| 246 | The metadata is not copied in cases 0, 2 or 3 so it should be |
| 247 | impossible to segfault your system by using this call. |
| 248 | */ |
| 249 | #define VALGRIND_SET_VBITS(zzdst,zzvbits,zznbytes) \ |
| 250 | (__extension__({unsigned int _qzz_res; \ |
| 251 | char* czzdst = (char*)zzdst; \ |
| 252 | char* czzvbits = (char*)zzvbits; \ |
| 253 | VALGRIND_MAGIC_SEQUENCE(_qzz_res, 0, \ |
| 254 | VG_USERREQ__SET_VBITS, \ |
| 255 | czzdst, czzvbits, zznbytes,0 ); \ |
| 256 | _qzz_res; \ |
| 257 | })) |
njn | d799418 | 2003-10-02 13:44:04 +0000 | [diff] [blame] | 258 | |
| 259 | #endif |
| 260 | |