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my_valgrind.h
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/* Copyright (C) 2010, 2022, MariaDB Corporation. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */ #ifndef MY_VALGRIND_INCLUDED #define MY_VALGRIND_INCLUDED /* clang -> gcc */ #ifndef __has_feature # define __has_feature(x) 0 #endif #if __has_feature(address_sanitizer) # define __SANITIZE_ADDRESS__ 1 #endif #if __has_feature(memory_sanitizer) # include <sanitizer/msan_interface.h> # define HAVE_valgrind # define HAVE_MEM_CHECK # define MEM_UNDEFINED(a,len) __msan_allocated_memory(a,len) # define MEM_MAKE_ADDRESSABLE(a,len) MEM_UNDEFINED(a,len) # define MEM_MAKE_DEFINED(a,len) __msan_unpoison(a,len) # define MEM_NOACCESS(a,len) ((void) 0) # define MEM_CHECK_ADDRESSABLE(a,len) ((void) 0) # define MEM_CHECK_DEFINED(a,len) __msan_check_mem_is_initialized(a,len) # define MEM_GET_VBITS(a,b,len) __msan_copy_shadow(b,a,len) # define MEM_SET_VBITS(a,b,len) __msan_copy_shadow(a,b,len) # define REDZONE_SIZE 8 #elif defined(HAVE_VALGRIND_MEMCHECK_H) && defined(HAVE_valgrind) # include <valgrind/memcheck.h> # define HAVE_MEM_CHECK # define MEM_UNDEFINED(a,len) VALGRIND_MAKE_MEM_UNDEFINED(a,len) # define MEM_MAKE_ADDRESSABLE(a,len) MEM_UNDEFINED(a,len) # define MEM_MAKE_DEFINED(a,len) VALGRIND_MAKE_MEM_DEFINED(a,len) # define MEM_NOACCESS(a,len) VALGRIND_MAKE_MEM_NOACCESS(a,len) # define MEM_CHECK_ADDRESSABLE(a,len) VALGRIND_CHECK_MEM_IS_ADDRESSABLE(a,len) # define MEM_CHECK_DEFINED(a,len) VALGRIND_CHECK_MEM_IS_DEFINED(a,len) # define MEM_GET_VBITS(a,b,len) VALGRIND_GET_VBITS(a,b,len) # define MEM_SET_VBITS(a,b,len) VALGRIND_SET_VBITS(a,b,len) # define REDZONE_SIZE 8 #elif defined(__SANITIZE_ADDRESS__) && (!defined(_MSC_VER) || defined (__clang__)) # include <sanitizer/asan_interface.h> /* How to do manual poisoning: https://github.com/google/sanitizers/wiki/AddressSanitizerManualPoisoning */ # define MEM_UNDEFINED(a,len) ((void) 0) # define MEM_MAKE_ADDRESSABLE(a,len) ASAN_UNPOISON_MEMORY_REGION(a,len) # define MEM_MAKE_DEFINED(a,len) ((void) 0) # define MEM_NOACCESS(a,len) ASAN_POISON_MEMORY_REGION(a,len) # define MEM_CHECK_ADDRESSABLE(a,len) \ assert(!__asan_region_is_poisoned((void*) a,len)) # define MEM_CHECK_DEFINED(a,len) ((void) 0) # define MEM_GET_VBITS(a,b,len) ((void) 0) # define MEM_SET_VBITS(a,b,len) ((void) 0) # define REDZONE_SIZE 8 #else # define MEM_UNDEFINED(a,len) ((void) 0) # define MEM_MAKE_ADDRESSABLE(a,len) ((void) 0) # define MEM_MAKE_DEFINED(a,len) ((void) 0) # define MEM_NOACCESS(a,len) ((void) 0) # define MEM_CHECK_ADDRESSABLE(a,len) ((void) 0) # define MEM_CHECK_DEFINED(a,len) ((void) 0) # define MEM_GET_VBITS(a,b,len) ((void) 0) # define MEM_SET_VBITS(a,b,len) ((void) 0) # define REDZONE_SIZE 0 #endif /* __has_feature(memory_sanitizer) */ #ifdef TRASH_FREED_MEMORY /* _TRASH_FILL() has to call MEM_MAKE_ADDRESSABLE() to cancel any effect of TRASH_FREE(). This can happen in the case one does TRASH_ALLOC(A,B) ; TRASH_FREE(A,B) ; TRASH_ALLOC(A,B) to reuse the same memory in an internal memory allocator like MEM_ROOT. _TRASH_FILL() is an internal function and should not be used externally. */ #define _TRASH_FILL(A,B,C) do { const size_t trash_tmp= (B); MEM_MAKE_ADDRESSABLE(A, trash_tmp); memset(A, C, trash_tmp); } while (0) #else #define _TRASH_FILL(A,B,C) do { MEM_UNDEFINED((A), (B)); } while (0) #endif /** Note that some memory became allocated and/or uninitialized. */ #define TRASH_ALLOC(A,B) do { _TRASH_FILL(A,B,0xA5); MEM_MAKE_ADDRESSABLE(A,B); } while(0) /** Note that some memory became freed. (Prohibit further access to it.) */ #define TRASH_FREE(A,B) do { _TRASH_FILL(A,B,0x8F); MEM_NOACCESS(A,B); } while(0) #endif /* MY_VALGRIND_INCLUDED */
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