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track.h
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/* ---------------------------------------------------------------------------- Copyright (c) 2018-2023, Microsoft Research, Daan Leijen This is free software; you can redistribute it and/or modify it under the terms of the MIT license. A copy of the license can be found in the file "LICENSE" at the root of this distribution. -----------------------------------------------------------------------------*/ #pragma once #ifndef MIMALLOC_TRACK_H #define MIMALLOC_TRACK_H /* ------------------------------------------------------------------------------------------------------ Track memory ranges with macros for tools like Valgrind address sanitizer, or other memory checkers. These can be defined for tracking allocation: #define mi_track_malloc_size(p,reqsize,size,zero) #define mi_track_free_size(p,_size) The macros are set up such that the size passed to `mi_track_free_size` always matches the size of `mi_track_malloc_size`. (currently, `size == mi_usable_size(p)`). The `reqsize` is what the user requested, and `size >= reqsize`. The `size` is either byte precise (and `size==reqsize`) if `MI_PADDING` is enabled, or otherwise it is the usable block size which may be larger than the original request. Use `_mi_block_size_of(void* p)` to get the full block size that was allocated (including padding etc). The `zero` parameter is `true` if the allocated block is zero initialized. Optional: #define mi_track_align(p,alignedp,offset,size) #define mi_track_resize(p,oldsize,newsize) #define mi_track_init() The `mi_track_align` is called right after a `mi_track_malloc` for aligned pointers in a block. The corresponding `mi_track_free` still uses the block start pointer and original size (corresponding to the `mi_track_malloc`). The `mi_track_resize` is currently unused but could be called on reallocations within a block. `mi_track_init` is called at program start. The following macros are for tools like asan and valgrind to track whether memory is defined, undefined, or not accessible at all: #define mi_track_mem_defined(p,size) #define mi_track_mem_undefined(p,size) #define mi_track_mem_noaccess(p,size) -------------------------------------------------------------------------------------------------------*/ #if MI_TRACK_VALGRIND // valgrind tool #define MI_TRACK_ENABLED 1 #define MI_TRACK_HEAP_DESTROY 1 // track free of individual blocks on heap_destroy #define MI_TRACK_TOOL "valgrind" #include <valgrind/valgrind.h> #include <valgrind/memcheck.h> #define mi_track_malloc_size(p,reqsize,size,zero) VALGRIND_MALLOCLIKE_BLOCK(p,size,MI_PADDING_SIZE /*red zone*/,zero) #define mi_track_free_size(p,_size) VALGRIND_FREELIKE_BLOCK(p,MI_PADDING_SIZE /*red zone*/) #define mi_track_resize(p,oldsize,newsize) VALGRIND_RESIZEINPLACE_BLOCK(p,oldsize,newsize,MI_PADDING_SIZE /*red zone*/) #define mi_track_mem_defined(p,size) VALGRIND_MAKE_MEM_DEFINED(p,size) #define mi_track_mem_undefined(p,size) VALGRIND_MAKE_MEM_UNDEFINED(p,size) #define mi_track_mem_noaccess(p,size) VALGRIND_MAKE_MEM_NOACCESS(p,size) #elif MI_TRACK_ASAN // address sanitizer #define MI_TRACK_ENABLED 1 #define MI_TRACK_HEAP_DESTROY 0 #define MI_TRACK_TOOL "asan" #include <sanitizer/asan_interface.h> #define mi_track_malloc_size(p,reqsize,size,zero) ASAN_UNPOISON_MEMORY_REGION(p,size) #define mi_track_free_size(p,size) ASAN_POISON_MEMORY_REGION(p,size) #define mi_track_mem_defined(p,size) ASAN_UNPOISON_MEMORY_REGION(p,size) #define mi_track_mem_undefined(p,size) ASAN_UNPOISON_MEMORY_REGION(p,size) #define mi_track_mem_noaccess(p,size) ASAN_POISON_MEMORY_REGION(p,size) #elif MI_TRACK_ETW // windows event tracing #define MI_TRACK_ENABLED 1 #define MI_TRACK_HEAP_DESTROY 1 #define MI_TRACK_TOOL "ETW" #define WIN32_LEAN_AND_MEAN #include <windows.h> #include "../src/prim/windows/etw.h" #define mi_track_init() EventRegistermicrosoft_windows_mimalloc(); #define mi_track_malloc_size(p,reqsize,size,zero) EventWriteETW_MI_ALLOC((UINT64)(p), size) #define mi_track_free_size(p,size) EventWriteETW_MI_FREE((UINT64)(p), size) #else // no tracking #define MI_TRACK_ENABLED 0 #define MI_TRACK_HEAP_DESTROY 0 #define MI_TRACK_TOOL "none" #define mi_track_malloc_size(p,reqsize,size,zero) #define mi_track_free_size(p,_size) #endif // ------------------- // Utility definitions #ifndef mi_track_resize #define mi_track_resize(p,oldsize,newsize) mi_track_free_size(p,oldsize); mi_track_malloc(p,newsize,false) #endif #ifndef mi_track_align #define mi_track_align(p,alignedp,offset,size) mi_track_mem_noaccess(p,offset) #endif #ifndef mi_track_init #define mi_track_init() #endif #ifndef mi_track_mem_defined #define mi_track_mem_defined(p,size) #endif #ifndef mi_track_mem_undefined #define mi_track_mem_undefined(p,size) #endif #ifndef mi_track_mem_noaccess #define mi_track_mem_noaccess(p,size) #endif #if MI_PADDING #define mi_track_malloc(p,reqsize,zero) \ if ((p)!=NULL) { \ mi_assert_internal(mi_usable_size(p)==(reqsize)); \ mi_track_malloc_size(p,reqsize,reqsize,zero); \ } #else #define mi_track_malloc(p,reqsize,zero) \ if ((p)!=NULL) { \ mi_assert_internal(mi_usable_size(p)>=(reqsize)); \ mi_track_malloc_size(p,reqsize,mi_usable_size(p),zero); \ } #endif #endif