| /* SPDX-License-Identifier: bzip2-1.0.6 */ |
| /* |
| This file is part of MemCheck, a heavyweight Valgrind tool for |
| detecting memory errors. |
| |
| Copyright (C) 2000-2017 Julian Seward. All rights reserved. |
| */ |
| |
| #ifndef __MEMCHECK_H |
| #define __MEMCHECK_H |
| |
| |
| /* This file is for inclusion into client (your!) code. |
| |
| You can use these macros to manipulate and query memory permissions |
| inside your own programs. |
| |
| See comment near the top of valgrind.h on how to use them. |
| */ |
| |
| #include "valgrind.h" |
| |
| /* !! ABIWARNING !! ABIWARNING !! ABIWARNING !! ABIWARNING !! |
| This enum comprises an ABI exported by Valgrind to programs |
| which use client requests. DO NOT CHANGE THE ORDER OF THESE |
| ENTRIES, NOR DELETE ANY -- add new ones at the end. */ |
| typedef |
| enum { |
| VG_USERREQ__MAKE_MEM_NOACCESS = VG_USERREQ_TOOL_BASE('M','C'), |
| VG_USERREQ__MAKE_MEM_UNDEFINED, |
| VG_USERREQ__MAKE_MEM_DEFINED, |
| VG_USERREQ__DISCARD, |
| VG_USERREQ__CHECK_MEM_IS_ADDRESSABLE, |
| VG_USERREQ__CHECK_MEM_IS_DEFINED, |
| VG_USERREQ__DO_LEAK_CHECK, |
| VG_USERREQ__COUNT_LEAKS, |
| |
| VG_USERREQ__GET_VBITS, |
| VG_USERREQ__SET_VBITS, |
| |
| VG_USERREQ__CREATE_BLOCK, |
| |
| VG_USERREQ__MAKE_MEM_DEFINED_IF_ADDRESSABLE, |
| |
| /* Not next to VG_USERREQ__COUNT_LEAKS because it was added later. */ |
| VG_USERREQ__COUNT_LEAK_BLOCKS, |
| |
| VG_USERREQ__ENABLE_ADDR_ERROR_REPORTING_IN_RANGE, |
| VG_USERREQ__DISABLE_ADDR_ERROR_REPORTING_IN_RANGE, |
| |
| /* This is just for memcheck's internal use - don't use it */ |
| _VG_USERREQ__MEMCHECK_RECORD_OVERLAP_ERROR |
| = VG_USERREQ_TOOL_BASE('M','C') + 256 |
| } Vg_MemCheckClientRequest; |
| |
| |
| |
| /* Client-code macros to manipulate the state of memory. */ |
| |
| /* Mark memory at _qzz_addr as unaddressable for _qzz_len bytes. */ |
| #define VALGRIND_MAKE_MEM_NOACCESS(_qzz_addr,_qzz_len) \ |
| VALGRIND_DO_CLIENT_REQUEST_STMT( \ |
| VG_USERREQ__MAKE_MEM_NOACCESS, \ |
| (_qzz_addr), (_qzz_len), 0, 0, 0) |
| |
| /* Similarly, mark memory at _qzz_addr as addressable but undefined |
| for _qzz_len bytes. */ |
| #define VALGRIND_MAKE_MEM_UNDEFINED(_qzz_addr,_qzz_len) \ |
| VALGRIND_DO_CLIENT_REQUEST_STMT( \ |
| VG_USERREQ__MAKE_MEM_UNDEFINED, \ |
| (_qzz_addr), (_qzz_len), 0, 0, 0) |
| |
| /* Similarly, mark memory at _qzz_addr as addressable and defined |
| for _qzz_len bytes. */ |
| #define VALGRIND_MAKE_MEM_DEFINED(_qzz_addr,_qzz_len) \ |
| VALGRIND_DO_CLIENT_REQUEST_STMT( \ |
| VG_USERREQ__MAKE_MEM_DEFINED, \ |
| (_qzz_addr), (_qzz_len), 0, 0, 0) |
| |
| /* Similar to VALGRIND_MAKE_MEM_DEFINED except that addressability is |
| not altered: bytes which are addressable are marked as defined, |
| but those which are not addressable are left unchanged. */ |
| #define VALGRIND_MAKE_MEM_DEFINED_IF_ADDRESSABLE(_qzz_addr,_qzz_len) \ |
| VALGRIND_DO_CLIENT_REQUEST_STMT( \ |
| VG_USERREQ__MAKE_MEM_DEFINED_IF_ADDRESSABLE, \ |
| (_qzz_addr), (_qzz_len), 0, 0, 0) |
| |
| /* Create a block-description handle. The description is an ascii |
| string which is included in any messages pertaining to addresses |
| within the specified memory range. Has no other effect on the |
| properties of the memory range. */ |
| #define VALGRIND_CREATE_BLOCK(_qzz_addr,_qzz_len, _qzz_desc) \ |
| VALGRIND_DO_CLIENT_REQUEST_STMT( \ |
| VG_USERREQ__CREATE_BLOCK, \ |
| (_qzz_addr), (_qzz_len), (_qzz_desc), \ |
| 0, 0) |
| |
| /* Discard a block-description-handle. Returns 1 for an |
| invalid handle, 0 for a valid handle. */ |
| #define VALGRIND_DISCARD(_qzz_blkindex) \ |
| VALGRIND_DO_CLIENT_REQUEST_EXPR(0 /* default return */, \ |
| VG_USERREQ__DISCARD, \ |
| 0, (_qzz_blkindex), 0, 0, 0) |
| |
| |
| /* Client-code macros to check the state of memory. */ |
| |
| /* Check that memory at _qzz_addr is addressable for _qzz_len bytes. |
| If suitable addressibility is not established, Valgrind prints an |
| error message and returns the address of the first offending byte. |
| Otherwise it returns zero. */ |
| #define VALGRIND_CHECK_MEM_IS_ADDRESSABLE(_qzz_addr,_qzz_len) \ |
| VALGRIND_DO_CLIENT_REQUEST_EXPR(0, \ |
| VG_USERREQ__CHECK_MEM_IS_ADDRESSABLE, \ |
| (_qzz_addr), (_qzz_len), 0, 0, 0) |
| |
| /* Check that memory at _qzz_addr is addressable and defined for |
| _qzz_len bytes. If suitable addressibility and definedness are not |
| established, Valgrind prints an error message and returns the |
| address of the first offending byte. Otherwise it returns zero. */ |
| #define VALGRIND_CHECK_MEM_IS_DEFINED(_qzz_addr,_qzz_len) \ |
| VALGRIND_DO_CLIENT_REQUEST_EXPR(0, \ |
| VG_USERREQ__CHECK_MEM_IS_DEFINED, \ |
| (_qzz_addr), (_qzz_len), 0, 0, 0) |
| |
| /* Use this macro to force the definedness and addressibility of an |
| lvalue to be checked. If suitable addressibility and definedness |
| are not established, Valgrind prints an error message and returns |
| the address of the first offending byte. Otherwise it returns |
| zero. */ |
| #define VALGRIND_CHECK_VALUE_IS_DEFINED(__lvalue) \ |
| VALGRIND_CHECK_MEM_IS_DEFINED( \ |
| (volatile unsigned char *)&(__lvalue), \ |
| (unsigned long)(sizeof (__lvalue))) |
| |
| |
| /* Do a full memory leak check (like --leak-check=full) mid-execution. */ |
| #define VALGRIND_DO_LEAK_CHECK \ |
| VALGRIND_DO_CLIENT_REQUEST_STMT(VG_USERREQ__DO_LEAK_CHECK, \ |
| 0, 0, 0, 0, 0) |
| |
| /* Same as VALGRIND_DO_LEAK_CHECK but only showing the entries for |
| which there was an increase in leaked bytes or leaked nr of blocks |
| since the previous leak search. */ |
| #define VALGRIND_DO_ADDED_LEAK_CHECK \ |
| VALGRIND_DO_CLIENT_REQUEST_STMT(VG_USERREQ__DO_LEAK_CHECK, \ |
| 0, 1, 0, 0, 0) |
| |
| /* Same as VALGRIND_DO_ADDED_LEAK_CHECK but showing entries with |
| increased or decreased leaked bytes/blocks since previous leak |
| search. */ |
| #define VALGRIND_DO_CHANGED_LEAK_CHECK \ |
| VALGRIND_DO_CLIENT_REQUEST_STMT(VG_USERREQ__DO_LEAK_CHECK, \ |
| 0, 2, 0, 0, 0) |
| |
| /* Do a summary memory leak check (like --leak-check=summary) mid-execution. */ |
| #define VALGRIND_DO_QUICK_LEAK_CHECK \ |
| VALGRIND_DO_CLIENT_REQUEST_STMT(VG_USERREQ__DO_LEAK_CHECK, \ |
| 1, 0, 0, 0, 0) |
| |
| /* Return number of leaked, dubious, reachable and suppressed bytes found by |
| all previous leak checks. They must be lvalues. */ |
| #define VALGRIND_COUNT_LEAKS(leaked, dubious, reachable, suppressed) \ |
| /* For safety on 64-bit platforms we assign the results to private |
| unsigned long variables, then assign these to the lvalues the user |
| specified, which works no matter what type 'leaked', 'dubious', etc |
| are. We also initialise '_qzz_leaked', etc because |
| VG_USERREQ__COUNT_LEAKS doesn't mark the values returned as |
| defined. */ \ |
| { \ |
| unsigned long _qzz_leaked = 0, _qzz_dubious = 0; \ |
| unsigned long _qzz_reachable = 0, _qzz_suppressed = 0; \ |
| VALGRIND_DO_CLIENT_REQUEST_STMT( \ |
| VG_USERREQ__COUNT_LEAKS, \ |
| &_qzz_leaked, &_qzz_dubious, \ |
| &_qzz_reachable, &_qzz_suppressed, 0); \ |
| leaked = _qzz_leaked; \ |
| dubious = _qzz_dubious; \ |
| reachable = _qzz_reachable; \ |
| suppressed = _qzz_suppressed; \ |
| } |
| |
| /* Return number of leaked, dubious, reachable and suppressed bytes found by |
| all previous leak checks. They must be lvalues. */ |
| #define VALGRIND_COUNT_LEAK_BLOCKS(leaked, dubious, reachable, suppressed) \ |
| /* For safety on 64-bit platforms we assign the results to private |
| unsigned long variables, then assign these to the lvalues the user |
| specified, which works no matter what type 'leaked', 'dubious', etc |
| are. We also initialise '_qzz_leaked', etc because |
| VG_USERREQ__COUNT_LEAKS doesn't mark the values returned as |
| defined. */ \ |
| { \ |
| unsigned long _qzz_leaked = 0, _qzz_dubious = 0; \ |
| unsigned long _qzz_reachable = 0, _qzz_suppressed = 0; \ |
| VALGRIND_DO_CLIENT_REQUEST_STMT( \ |
| VG_USERREQ__COUNT_LEAK_BLOCKS, \ |
| &_qzz_leaked, &_qzz_dubious, \ |
| &_qzz_reachable, &_qzz_suppressed, 0); \ |
| leaked = _qzz_leaked; \ |
| dubious = _qzz_dubious; \ |
| reachable = _qzz_reachable; \ |
| suppressed = _qzz_suppressed; \ |
| } |
| |
| |
| /* Get the validity data for addresses [zza..zza+zznbytes-1] and copy it |
| into the provided zzvbits array. Return values: |
| 0 if not running on valgrind |
| 1 success |
| 2 [previously indicated unaligned arrays; these are now allowed] |
| 3 if any parts of zzsrc/zzvbits are not addressable. |
| The metadata is not copied in cases 0, 2 or 3 so it should be |
| impossible to segfault your system by using this call. |
| */ |
| #define VALGRIND_GET_VBITS(zza,zzvbits,zznbytes) \ |
| (unsigned)VALGRIND_DO_CLIENT_REQUEST_EXPR(0, \ |
| VG_USERREQ__GET_VBITS, \ |
| (const char*)(zza), \ |
| (char*)(zzvbits), \ |
| (zznbytes), 0, 0) |
| |
| /* Set the validity data for addresses [zza..zza+zznbytes-1], copying it |
| from the provided zzvbits array. Return values: |
| 0 if not running on valgrind |
| 1 success |
| 2 [previously indicated unaligned arrays; these are now allowed] |
| 3 if any parts of zza/zzvbits are not addressable. |
| The metadata is not copied in cases 0, 2 or 3 so it should be |
| impossible to segfault your system by using this call. |
| */ |
| #define VALGRIND_SET_VBITS(zza,zzvbits,zznbytes) \ |
| (unsigned)VALGRIND_DO_CLIENT_REQUEST_EXPR(0, \ |
| VG_USERREQ__SET_VBITS, \ |
| (const char*)(zza), \ |
| (const char*)(zzvbits), \ |
| (zznbytes), 0, 0 ) |
| |
| /* Disable and re-enable reporting of addressing errors in the |
| specified address range. */ |
| #define VALGRIND_DISABLE_ADDR_ERROR_REPORTING_IN_RANGE(_qzz_addr,_qzz_len) \ |
| VALGRIND_DO_CLIENT_REQUEST_EXPR(0 /* default return */, \ |
| VG_USERREQ__DISABLE_ADDR_ERROR_REPORTING_IN_RANGE, \ |
| (_qzz_addr), (_qzz_len), 0, 0, 0) |
| |
| #define VALGRIND_ENABLE_ADDR_ERROR_REPORTING_IN_RANGE(_qzz_addr,_qzz_len) \ |
| VALGRIND_DO_CLIENT_REQUEST_EXPR(0 /* default return */, \ |
| VG_USERREQ__ENABLE_ADDR_ERROR_REPORTING_IN_RANGE, \ |
| (_qzz_addr), (_qzz_len), 0, 0, 0) |
| |
| #endif |
| |
