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688903eb | 1 | /* Copyright (C) 1996-2018 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
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5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
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8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
6d52618b | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
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15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
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17 | |
18 | #ifndef _MCHECK_H | |
6c8dbf00 | 19 | #define _MCHECK_H 1 |
6d52618b | 20 | |
bd355af0 | 21 | #include <features.h> |
6d52618b | 22 | |
bd355af0 | 23 | __BEGIN_DECLS |
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24 | |
25 | /* Return values for `mprobe': these are the kinds of inconsistencies that | |
26 | `mcheck' enables detection of. */ | |
27 | enum mcheck_status | |
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28 | { |
29 | MCHECK_DISABLED = -1, /* Consistency checking is not turned on. */ | |
30 | MCHECK_OK, /* Block is fine. */ | |
31 | MCHECK_FREE, /* Block freed twice. */ | |
32 | MCHECK_HEAD, /* Memory before the block was clobbered. */ | |
33 | MCHECK_TAIL /* Memory after the block was clobbered. */ | |
34 | }; | |
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35 | |
36 | ||
37 | /* Activate a standard collection of debugging hooks. This must be called | |
38 | before `malloc' is ever called. ABORTFUNC is called with an error code | |
39 | (see enum above) when an inconsistency is detected. If ABORTFUNC is | |
40 | null, the standard function prints on stderr and then calls `abort'. */ | |
6c8dbf00 | 41 | extern int mcheck (void (*__abortfunc)(enum mcheck_status)) __THROW; |
6d52618b | 42 | |
8a426e12 | 43 | /* Similar to `mcheck' but performs checks for all block whenever one of |
8e605e78 | 44 | the memory handling functions is called. This can be very slow. */ |
6c8dbf00 | 45 | extern int mcheck_pedantic (void (*__abortfunc)(enum mcheck_status)) __THROW; |
8e605e78 | 46 | |
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47 | /* Force check of all blocks now. */ |
48 | extern void mcheck_check_all (void); | |
49 | ||
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50 | /* Check for aberrations in a particular malloc'd block. You must have |
51 | called `mcheck' already. These are the same checks that `mcheck' does | |
52 | when you free or reallocate a block. */ | |
c1422e5b | 53 | extern enum mcheck_status mprobe (void *__ptr) __THROW; |
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54 | |
55 | /* Activate a standard collection of tracing hooks. */ | |
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56 | extern void mtrace (void) __THROW; |
57 | extern void muntrace (void) __THROW; | |
6d52618b | 58 | |
bd355af0 | 59 | __END_DECLS |
6d52618b | 60 | #endif /* mcheck.h */ |